DRC-2009-006465 - 0901a0688014f6ca

DENISO
MINES
J>h
^^^.L - ,9crn^ on/o^-/h5
Dtnten VtaiM (USA) Carpi
105017lh StKMt, 9uMt »S0
OfflW. CO 80285
USA
Tri:303e2S-77W
Pn: 303 38M125
.dnlsoninlim.cofii
VIA FEDERAL EXPRESS
November 25, 2009
Mr. Dane Finerfi-ock, Executive Secretary
Utah Radiation Control Board
Utah Department of Environmental Quality
168 North 1950 West
P.O.Box 144810
Sah Lake City, UT 84114-4810
Dear Mr. Finerfi-ock:
^303;.
jg Received
g NOV 2009 m\
Re: Renewal Application for Radioactive Materials License (RML) No.
UTI900479: Health Physics Interrogatories - Round 2; and Engineering
Comment Interrogatories - Round 1
Enclosed please find a CD containing an electronic copy of Revision 4.0 of the Mill's
Reclamarion Plan, including Appendices A - F. Two (2) hard copies ofthe Plan were sent by
overnight delivery last night.
Ifyou should have any questions or require additional information, please contact me.
Yours very truly,
DENISON MINES (USA) CORP.
Harold R. Roberts
Execurive Vice President, U. S. Operations
cc: Ron F. Hochstein
David C. Frydenlund
Steven D. Landau
David E. Turk
Reclamation Plan
White Mesa Mill
Blanding,Utah
Radioactive Materials License No.UT1900479
Revision 4.0
November 2009
Prepared By:
Denison Mines (USA)Corp.
1050 17'h Street,Suite 950
Denver,CO 80265
[phone]
Page i
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
TABLE OF CONTENTS
Page
INTRODUCTION............................................................................I-I
Summary ofPlan................................................................................1-1
Plan Organization...............................................................................1-2
1.
1.1
1.1.1
1.1.2
1.1.3
1.2
1.3
1.3.1
1.3.2
1.4
1.4.1
1.4.2
1.4.3
1.5
1.5.1
1.5.1.1
1.5.1.2
1.5.1.3
1.5.1.4
1.5.1.5
1.5.2
SITE CHARACTERITICS ..
Climate and Meteorology ..
Regional..
Storms .
~S~.
Topography ..
Archeological Resources .
Archeological Sites ..
Current Status of Excavation ..
Surface Water .
Surface Water Description .
Surface Water Quality as of the Date of the FES ..
Surface Water Background Quality ..
Groundwater...
Groundwater Characteristics .
Geologic Setting .
Hydrogeologic Setting ..
Perched Zone Hydrogeology ..
Perched Groundwater Flow ..
Perched Zone Hydrogeology Beneath And Downgradient Of The
Tailings Cells .
Groundwater Quality .
1-1
1-6
1-6
1·11
1·12
1-14
1-14
1-14
1·17
1-19
1-19
1-23
1-27
1·30
1-30
1·30
1-31
1-33
1-37
1-37
1-43
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Denison Mines (USA)Corp.
White Mesa Mill Reelamation Plan
1.5.2.1
1.5.2.2
1.5.3
1.5.4
1.5.5
1.5.6
1.6
1.6.1
1.6.1.1
1.6.1.2
1.6.1.3
1.6.2
1.6.2.1
1.6.2.2
1.6.2.3
1.6.2.4
1.6.2.5
1.6.3
1.6.3.1
1.6.3.2
1.7
1.7.1
1.7.1.1
1.7.1.2
1.7.2
1.7.3
1.7.3.1
1.7.3.2
1.7.4
1.7.5
1.7.5.1
1.7.5.2
1.7.5.3
1.7.5.4
1.7.5.5
1.7.5.6
EntradalNavqjo Aquifer .
Perched Groundwater Zone .
Background Ground Water Quality in the Perched Aquifer..
Quality of Ground Water at the Compliance Monitoring Point..
Springs and Seeps .
Groundwater Appropriations Within a Five Mile Radius .
Geology .
Regional Geology .
Physiography .
Rock Units .
Structure and Tectonics .
Blanding Site Geology .
Physiography and Topography .
Rock Units .
Structure .
Relationship ofEarthquakes to Tectonic Structures .
Potential Earthquake Hazards to Mill Area .
Seismic Risk Assessment.'"
Static Analysis .
Pseudostatic Analysis (Seismicity).
Biota .
Terrestrial..
Flora .
Fauna .
Aquatic Biota .
Background Radiation .
The World .
United States .
Mill Site Background .
Current Monitoring Data .
Environmental Radon .
Environmental Gamma .
Vegetation Samples .
Environmental Air Monitoring and Stack Sampling .
Surface Water .
Meteorological Monitoring .
1-43
1-49
1-49
1-55
1-55
1-60
1-64
1-64
1-65
1-67
1-74
1-79
1-79
1-81
1-86
1-91
1-96
1-97
1-98
1-99
1-100
1-100
1-100
1-104
1-109
1-110
1-110
1-112
1-113
1-114
1·114
1·114
1·115
1-115
1-116
1-116
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
2.
2.1
2.1.1
2.2
2.2.1
2.2.2
2.2.3
2.2.3.1
2.2.3.2
2.3
2.3.1
2.3.1.1
2.3.1.2
2.3.1.3
2.3.1.4
2.3.1.5
2.3.1.6
2.3.1.7
EXISTING FACILITy ..
Facility Construction History .
Mill and Tailings Management Facility .
Facility Operations .
Operating Periods ..
Mill Circuit..
Tailings Management Facilities .
Tailings Management ..
Liquid Management .
Monitoring Programs ..
Monitoring and Reporting Under the Mill's GWDP .
Groundwater Monitoring ..
a)Plugged and Excluded Wells .
b)Groundwater Monitoring at the Mill Prior to Issuance of the
GWDP ..
c)Issuance of the GWDP ..
d)Current Ground Water Monitoring Program at the Mill Under
the GWDP ..
Deep Aquifer .
Seeps and Springs ..
Discharge Minimization Technology and Best Available Technology
Standards and Monitoring ..
a)GeneraL ..
b)Tailings Cell Operation ..
c)Slimes Drain Monitoring ..
d)Maximum Tailings Waste Solids Elevation ..
e)Wastewater Elevation in Roberts Pond .
f)Inspection of Feedstock Storage Area .
g)Monitor and Maintain Inventory of Chemicals .
BAT Performance Standards for Ce1l4A ..
a)BAT Operations and Maintenance Plan ..
b)Implementation of Monitoring Requirements Under the BAT
Operations and Maintenance Plan ..
(i)Weekly Leak Detection System (LDS)Monitoring ..
(ii)Slimes Drain Recovery Head Monitoring .
Stormwater Management and Spill Control Requirements .
Tailings and Slimes Drain Sampling ..
2-1
2-1
2-2
2-2
2-2
2-3
2-5
2-6
2-7
2-8
2-8
2-8
2-8
2-8
2-8
2-10
2-12
2-13
2-14
2-14
2-14
2-15
2-15
2-16
2-16
2-18
2-19
2-19
2-19
2-20
2-21
2-21
2-22
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
2.3.2
2.3.2.1
2.3.2.2
3.
3.1
3.2
3.2.1
3.2.2
3.2.2.1
3.2.2.2
3.2.2.3
Monitoring and Inspeetions Required Under the Lieense .
Environmental Monitoring .
c)Ambient Air Monitoring .
(i)Ambient Partieulate .
(ii)Ambient Radon .
d)External Radiation .
e)Soil and Vegetation .
(i)Soil Monitoring .
(i)Vegetation Monitoring .
d)Meteorological .
e)Point Emissions .
f)Surfaee Water Monitoring .
Additional Monitoring and Il1.\]Jections Required Under the License..
a)Daily Inspections .
(i)Radiation Staff Inspections .
(ii)Operating Foreman Inspections .
(iii)Daily Tailings Inspection .
b)Weekly Inspections .
(i)Weekly Inspection of the Mill Forms .
(ii)Weekly Ore Storage Pad Inspection Forms .
(iii)Weekly Tailings and DMT Inspection .
c)Monthly Reports .
(i)Monthly Radiation Safety Reports .
(ii)Monthly Tailings Inspection Reports .
d)Quarterly Tailings Inspections .
e)Annual Evaluations .
(i)Annual Technical Evaluation .
(ii)Annual Movement Monitor Survey .
(iii)Annual Leak Detection Fluid Samples .
RECLAMATION PLAN .
Location and Property Description .
Facilities to be Reclaimed .
Summary of Facilities to be Reclaimed .
Tailings and Evaporative Cells .
Soil Cover Design .
Cell I .
Ce1l2 .
2-23
2-23
2-23
2-23
2-25
2-26
2-27
2-27
2-27
2-28
2-29
2-29
2-31
2-31
2-31
2-31
2-32
2-32
2-32
2-33
2-33
2-33
2-33
2-34
2-34
2-34
2-34
2-36
2-36
3-1
3-1
3-3
3-3
3-5
3-5
3-7
3-9
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
3.2.2.4
3.2.2.5
3.2.3
3.2.3.1
3.2.3.2
3.3
3.3.1
3.3.2
3.3.2.1
3.3.2.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.6.1
3.3.6.2
3.3.7
3.3.8
~U3 .
CeU4A .
Mill Decommissioning .
Mill Building,Equipment and Other 11e.(2)Byproduct Material ..
MiU Site .
Design Criteria .
Regulatory Criteria .
Radon Flux Attenuation .
Predictive Analysis ..
Empirical Data .
Infiltration Analysis ..
Freeze/Thaw Evaluation ..
Soil Cover Erosion Protection .
Slope Stability Analysis .
Static Analysis .
Pseudostatic Analysis (Seismicity),.
Soil Cover-Animal Intrusion .
Cover Material/Cover Material Volumes ..
3-9
3-9
3-9
3-11
3-12
3-12
3-13
3-15
3-15
3-17
3-18
3-20
3-20
3-22
3-23
3-23
3-24
3-24
Table
TABLE 1.1-1
TABLE 1.1-2
TABLE 1.3-1
TABLE 1.4-1
TABLE 1.4-2
TABLE 1.5-1
TABLE 1.5-2
TABLE 1.5-3
TABLE 1.5-4
TABLE 1.6-1
WMRCPLAN\TABLE.lSI\N(l\'~ll\ber 200l)
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
LIST OF TABLES
Description Page
Period of Record General Climate Summary -Precipitation at
Blanding,Utah..........................................................1-7
Period of Record General Climatc Summary -Temperature at
Blanding,Utah..........................................................1-9
Distribution of Recorded Sites According to Temporal Position
(Table 2.3-2 1978 ER -FES)..........................................1-16
Drainage Areas of Project Vicinity and Region
(Table 2.6-3 1978 ER -FES)..........................................1-22
Summary of FES and Subsequent Sampling Results for
Cottonwood Wash and Westwater Creek
(Table 3.7-2 2007 ER)..................................................1-27
Water Quality of the Navajo Sandstone Aquifer in the Mill
Vicinity
(Table 2.25 FES with additional Mill sampling data)..............1-46
Results of Quarterly Sampling Ruin Spring (2003-2004)
(Table 3.7-9 2007 ER)..................................................I-57
Seeps and Springs Sampling (July 2009)
(Mill sampling data)....................................................1-59
Wells Located Within a 5-Mile Radius of the White Mesa
Uranium Mill
(Denison 2009)..........................................................1-63
Generalized Stratigraphic Section of Subsurface Rocks
Based on Oil-Well Logs
(Table 2.6-1 UMETCO)..............1-68
Table
TABLE 1.6-2
TABLE 1.6-3
TABLE 1.7-1
TABLE 1.7-2
TABLE 1.7-3
TABLE 1.7-4
TABLE 1.7-5
TABLE 2.3-1
TABLE 2.3-2
TABLE 3.3-1
TABLE 5.3.2.1-1
WMRCI'LAN\TABLE.L<;T\;''io\'Cltlhcr :'lO()')
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Description Page
Generalized Stratigraphic Section of Exposed Rocks
in the Project Vicinity
(Table 2.6-2 UMETCO).........................................1-69
Modified Mercalli Scale,1956 Version
(Table 2.6-3 UMETCO)................................................1-88
Community Types and Expanse Within the
Project Site Boundary
(Table 2.7-1 UMETCO)................................................1-102
Ground Cover for Each Community Within the
Project Site Boundary.........................1-102
Birds Observed in the Vicinity of the White Mesa
Project
(Table 2.7-3 UMETCO)................................................1-105
Endangered,Threatened and Candidate Species
In the Mill Area
(2002 EA)................................................................1-107
Species Managed Under Conservation Agreements/Strategies at
the Mill Area
(2002 EA)................................................................1-108
Groundwater Monitoring Constituents Listed in Table 2 of the
GWDP
(Table 2 GWDP)........................................................2-10
Operational Phase Surface Water Monitoring Program
(Mill Environmental Protection Manual Part 1,Table I).........2-30
Average Radon Flux From Tailings Cells 2004-2008
(Mill Sampling Data)...................................................3-17
Placement and Compaction Criteria Reclamation
Cover Materials...........A-34
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Table
TABLE B-1
WMRCI'LAN\TABLE.LS1\N0I'Clllbcl'20D\)
Description
Required Reports .
Page
B-IS
Figure
FIGURE I-I
FIGURE 1-2
FIGURE 1.1-1
FIGURE 1.4-1
FIGURE 1.4-2
FIGURE 1.4-3
FIGURE 1.5-1
FIGURE 1.5-2
FIGURE 1.5-3
FIGURE 1.5-4
FIGURE 1.5-5
WMRCI'LAN\FIGURE.LS'I\l'!ovcmbcl'2(H)')
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Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
LIST OF FIGURES
Description Page:
White Mesa Mill Regional Location Map..1-2
White Mesa Mill Location Map.....................................1-3
Windrose...............................................................1-13
Drainage Map of the Vicinity of the White Mesa Project
(Adapted from Dames &Moore (l978b),Plate 2.6-5)...........1-21
Streamflow Summary in the Blanding,Utah Vicinity
(Adapted from Dames &Moore (l978b),Plate 2.6-6,updated)1-24
Surface Water Quality Sampling Stations Prior to Mill
Operations
(Adapted from Dames &Moore (l978b),Plate 2.6-10).........1-25
Generalized Stratigraphy of White Mesa Mill
(Adapted from the 2007 ER,Figure 3.7-1).... .. .......... ........1-32
Approximate Elevation of Top of Brushy Basin
(Adapted from HGC,2009,Figure I)..............1-34
Kriged Perched Water Levels ISl Quarter,2009
(Adapted from HGC,2009,Figure 5)..............................1-38
Portion of USGS Black Mesa 7.5'Sheet Showing
Approximate Location of the Tailing Cells in Relation to
Nearby Canyons and Ruin Spring
(Adapted from HGC,2009,Figure 6)..............................1-39
Depth to Perched Water ISl Quarter,2009
(Adapted from HGC,2009,Figure 7)....1-41
Figure
FIGURE 1.5-6
FIGURE 1.5-7
FIGURE 1.5-8
FIGURE 1.6-1
FIGURE 1.6-2
FIGURE 1.6-3
FIGURE 1.6-4
FIGURE 1.6-5
FIGURE 1.6-6
FIGURE 1.7-1
FIGURE 2.3-1
FIGURE 3.1-1
FIGURE 3.2-1
FIGURE 3.2.3-1
FIGURE A-2.2.4-1
FIGURE A-3.2-1
WMRCI'J,AN\I'JGURE.l.S'l\N(lI'Cllllll.'1'2(1l1')
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Description Page:
Perched Zone Saturated Thickness 1Sl Quarter,2009
(Adapted from HGC,2009,Figure 8)..............................1·42
Groundwater (Well or Spring)Sampling Stations in the White
Mesa Vicinity
(Adapted from the 2007 ER,Figure 3.7-8)........................1·45
Ground Water Appropriation Applications Within a 5-Mi1e
Radius...................................................................1·63
Colorado Plateau Geology Map
(Adapted from the 2007 ER,Figure 3.4-1)........................1·66
White Mesa Millsite Geology of Surrounding Area..............1·80
Seismicity Within 320km of the White Mesa MilL..............1·87
Seismicity Within 200km of the White Mesa MilL..............1·90
Seismicity of the Western United States 1950 to 1979..........1·92
Colorado Lineament...................................................1·95
Vegetation Community Types on the White Mesa Mill Site....1·103
High Volume Air Monitoring Stations
(Adapted from the 2007 ER,Figure 3.3-2)........................2·24
White Mesa Mill Regional Map Showing Land Position........3·2
White Mesa Mill General Layout Showing Access and
Restricted Area Boundary............................................3·4
Site Map Showing Locations of Buildings and Tanks...........3·10
Sedimentation Basin DetaiL.........................................A·7
Mill Site and Ore Pad Final Grading Plan.........................A·12
Page iii
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Figlll'e
FIGURE A-3.3-I
FIGURE A-3.3-2
FIGURE A-S.I -I
FIGURE A-S.I-2
FIGURE A-S.I-3
FIGURE A-S.1.4
FIGURE B-1
WMRCI'LANI1'IGURI,.ISI\Novcmbcr20()9
Description
Typical Scanning Path Scoping Survey .
Standard Sampling Pattern for Systematic Grid Survey of Soil
Reclamation Cover Grading Plan for Cells 2,3 and 4A .
Reclamation Cover and Cross Sections ..
Reclamation Cover Cross Section and Details .
Rock Apron at Base of Toe of Cell Outslopes .
Typical Flow Chart for Construction Project..
Page:
A-19
A-20
A-25
A-26
A-27
A-28
B-23
Attachment
A
B
C
D
E
F
G
H
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Revision 4.0
Denison Mines (USA)Corp.
White Mesa Reclamation Plan
LIST OF ATTACHMENTS
Description
Plans and Specifications for Reclamation of White Mesa Mill
Facility,Blanding,Utah.
Quality Plan for Construction Activities,White Mesa Project,
Blanding,Utah.
Cost Estimates for Reclamation of White Mesa Facility 111
Blanding,Utah.
Reclamation Material Characteristics
Evaluation of Potential Settlement Due to Earthquake-Induced
Liquefaction and Probabilistic Seismic Risk Assessment
Radon Emanation Calculations (Revised)
Channel and Toe Apron Design Calculations of White Mesa
Facilities in Blanding,Utah.
Rock Test Results -Blanding Area Gravel Pits
Page ii
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Reclamation Plan
LIST OF APPENDICES
(Appendix D Was Previously Submitted with Revision 1.0,February 28,1997)
Appendix
A
B
C
D
E
F
Description
Semi-Annual E.Yfluent Reports (January through June,2008),(June
through December,2008)and (January through June,2009),for the
Mill
Site Hydrogeology and Estimation ()f Groundwater Travel Times In
The Perched Zone White Mesa Uranium Mill Site Near Blanding,
Utah,August 27,2009,prepared by Hydro Oeo Chem,Ine.(the
"2009 HOC Report")
The Mill's Stonnwater Best Management Practices Plan,Revision
1.3:June 12,2008
Tailings Cover Design,White Mesa Mill,October 1996.Titan
Environmental Corporation.
National Emission Standards .!br Hazardous Air Pollutants Radon
Flux Measurement Program,White Mesa Mill Site,2008,Tellco
Environmental
Semi-Annual Monitoring Report July I --December 31,2008 and
Annual Monitoring Summary for 2008,While Mesa Mill
Meteorological Station,January 20, 2009,McVehil-Monnett
Associates,Inc.
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
REFERENCES
Abt,S.R.,1987.Engineering and Design of Waste Disposal Systems,Mini-course No.7:
Riprap Design for Reclamation.
Advanced Terra Testing,1996.
Agenbroad,L.D.et.aI.,1981.1980 Excavations in White Mesa,San Juan County,Utah.
Aitken and Berg,1968.
Aki,K.,1979.Characterization of Barriers on an Earthquake Fault,Journal of Geophysical
Research,v.84,pp.6140-6148.
Algermissen,S.T.and Perkins,D.M.,1976.A Probabilistic Estimate ofMaximum Acceleration
on Rock in the Contiguous United States,U.S.Geological Survey Open-File Report,No.
76-416.
Anderson,L.W.and Miller,D.G.,1979.Quarternary Fault Map of Utah,FURGO,Inc.
Arabasz,W.J.,Smith,R.B.,and Richins,W.D.,eds.,1979.Earthquake Studies in Utah 1850 to
1978,Special Publication of the University of Utah Seismograph Stations,Department of
Geology and Geophysics.
Bonilla,M.G.,Mark,R.K.,and Lienkaemper,J.J.,1984.Statistical Relations Among
Earthquake Magnitude,Surface Rupture Length,and Surface Fault Displacement,
Bulletin of the Seismological Society of America,v.74,No.6,pp.2379-2411.
Brill,K.G.and Nuttli,O.W.,1983.Seismicity of the Colorado Lineament,Geology,v.11,pp.
20-24.
Case,J.E.and Joesting,H.R.,1972.Regional Geophysical Investigations in the Central Plateau,
U.S.Geological Survey Professional Paper 736.
Casjens,L.A.et.aI.,1980.Archeological Excavations on White Mesa,San Juan County,Utah,
1979;Volumes I through IV;June,1980.
Cater,F.W.,1970.Geology of the Salt Anticline Region in Southwestern Colorado,U.S.
Geological Survey,Professional Paper 637.
SECTREF,RP'I\Novcmbcr 2009
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Chen and Associates,Inc.,1978.Soil Property Study,Earth Lined Tailings Retention Cells,
White Mesa Uranium Project,Blanding,Utah.
Chen and Associates,Inc.,1979.Soil Property Study,Proposed Tailings Retention Cells,White
Mesa Uranium Project,Blanding,Utah.
Chen and Associates,Inc.,1987.
Cook,K.L.and Smith,R.B.,1967.Seismicity in Utah,1850 Through June 1965,Bull.Seism.
Soc.Am.,v.57,pp.689-718.
Coulter,H.W.,Waldron,H.H.,and Devine,J.F.,1973.Seismic and Geologic Siting
Considerations for Nuclear Facilities,Proceedings,Fifth World Conference on Earthquake
Engineering,Rome,Paper 302.
Craig,L.C.,et.aI.,1955.Stratigraphy of the Morrison and Related Formations,Colorado
Plateau Region,a Preliminary Report,U.S.Geological Survey Bulletin 1009-E,pp.
125-168.
Dames and Moore,1978,"Environmental Report,White Mesa Uranium Project,San Juan County,
Utah."Prepared for Energy Fuels Nuclear,Inc.,January.
Dames and Moore,1978a.Site Seleetion and Design Study Tailing Retention and Mill
Facilities,White Mesa Uranium Project,January 17,1978.
Dames and Moore,I978b.Environmental Report,White Mesa Uranium Projeet,San Juan
County,Utah,January 20,1978,revised May 15,1978.
D'Appolonia Consulting Engineers,Inc.,1979.Engineer's Report,Tailings Management
System,White Mesa Uranium Projeet,Blanding,Utah.
D'Appolonia Consulting Engineers,Inc.,1981,Letter Report,"Assessment of the Water Supply
System,White Mesa Project,Blanding,Utah."Prepared for Energy Fuels Nuclear,Ine.,
February.
D'Appolonia Consulting Engineers,Ine.,1981 a.Engineer's Report,Second Phase Design -Cell 3
Tailings Management System,White Mesa Uranium Project,Blanding,Utah.
D'Appolonia Consulting Engineers,Inc.,1981b.Letter Report,Leak Detection System
Evaluation,White Mesa Uranium Project,Blanding,Utah.
SECTREF.RPT\Novcmber 2009
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
D'Appolonia Consulting Engineers,Inc.,1982,"Construction Rcport,Initial Phasc -Tailings
Management Systcm,White Mesa Uranium Project,Blanding,Utah."Prepared for
Energy Fuels Nuclear,Inc.,February.
D'Appolonia Consulting Engineers,Inc.,1982a.Construction Report,Initial Phase -Tailings
Management System,White Mcsa Uranium Project,Blanding,Utah.
D'Appolonia Consulting Engineers,Inc.,1982b.Monitoring Plan -Initial Phase -Tailings
Management System -White Mesa Uranium Project,Blanding,Utah.
D'Appolonia Consulting Engincers,Inc.,1982c.Letter Report -Groundwater Monitoring
Program -White Mesa Uranium Project,Blanding,Utah.
D'Appolonia Consulting,Engineers,Inc.,1982d.Letter Report -Additional Analysis Tailings
Cover Design Revisions -White Mesa Uranium Project,Blanding,Utah.
D'Appolonia Consulting Engineers,Inc.,1984,"Engineer's Report,Geotechnical Site Evaluation,
Farley Project,Garfield County,Utah."Prepared for Atlas Minerals,Moab,Utah,June.
Denison Mines (USA)Corp.Semi-Annual Effluent Reports (January through June,2008),(June
through December,2008)and (January through June,2009),for the White Mesa Mill.
Denison Mines (USA)Corp,February 28,2007.White Mesa Uranium Mill License Renewal
Application State of Utah Radioactive Materials License No.UT1900479.
Denison Mines (USA)Corp,February 28,2007.White Mesa Uranium Mill Environmental
Report In Support ofthe License Renewal Application State of Utah Radioactive Materials
License No.UTl900479.
Division of Radiation Control,Utah,December 1,2004.Statement of Basis for a Uranium
Milling Facility at White Mesa,South of Blanding,Utah,Owned and Operated by
International Uranium (USA)Corporation.
Eardly,A.J.,1958.Physiography of Southeastern Utah in Intermountain Association Petroleum
Geologists Guidebook,9th Annual Field Conference,Geology of the Paradox Basin,pp.
10-15.
Energy Fuels Nuclear,Inc.,1983.Construction Report -Second Phase Tailings Management
System,White Mesa Uranium Project.
SECTREF.RP1,Novcmbcr 2009
Pageiv
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Environmental Protection Agcncy,1994.
Feltis,R.D.,1966.Water from Bedrock in the Colorado Plateau of Utah,Utah State Engincer
Technical Publication No.15.
Grosc,L.T.,1972.Tectonics,in Geologic Atlas of the Rocky Mountain Region Rocky Mountain
Association Geologists,Denver,Colorado,pp.35-44.
Hadsell,F.A.,1968.History of Earthquakes in Colorado,in Hollister,J.S.and Weimer,R.J.,
eds.,Geophysical and Geological Studies of the Relationships Between the Denver
Earthquakes and the Rocky Mountain Arsenal Well,Colorado School Mines Quarterly,v.
63,No.1,pp.57-72.
Haynes,D.o.,Vogel,J.D.,and Wyant,D.G.,1972,"Geology,Structure and Uranium Deposits of
the Cortez Quadrangle,Colorado and Utah."U.S.Geological Survey,Miscellaneous
Investigation Series,Map,1-629,May.
Hermann,R.B.,Dewey,J.W.,and Park,S.F.,1980.The Dulce,New Mexico,Earthquake of
January23,1966,Seismological Society of America Bulletin,v.70,No.6,pp.2171-2183.
Hite,R.J.,1975.An Unusual Northeast-trending Fracture Zone and its Relation to Basement
Wrench Faulting in Northern Paradox Basin,Utah and Colorado,Four Corners Geological
Society 8th Field Conference Guidebook,Durango,Colorado,pp.217-223.
Huff,L.D.,and Lesure,F.G.,1965.Geology and Uranium Deposits of Montezuma Canyon
Area,San Juan County,Utah,U.S.Geological Survey Bulletin 1190,102 p.
Hunt,C.B.,1956.Cenozoic Geology of the Colorado Plateau:U.S.G.S.Professional Paper,
279.
Hydro-Engineering,1991,"Ground Water Hydrology at the White Mesa Tailings Facility."
Prepared for Umetco Minerals Corporation,Blanding,Utah,July.
Hydro Geo Chem,Inc.,2001.Update to Report "Investigation of Elevated Chloroform
Concentrations in Perched Groundwater at the White Mesa Uranium Mill Near Blanding,
Utah".
Hydro Geo Chem,Inc.,2002.Hydraulic Testing at the White Mesa Uranium Mill Near Blanding,
Utah During July,2002.
Hydro Geo Chem,Inc.,2005.Perched Monitoring Well Installation and Testing at the White
SECTREF.RP'I\Novcmbcr 2009
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Mesa Uranium Mill,April Through June,2005.
Hydro Geo Chem,Inc.,2007.Draft Lctter to Steven Landau,Denison Mines (USA)Corporation,
Denver,Colorado,December 19,2007.
Hydro Geo Chem,Inc.,August 27,2009.Site Hydrogeology and Estimation of Groundwater
Travel Times in the Perched Zone,White Mesa Uranium Mill Site Near Blanding,Utah.
INTERA,Inc.,October 2007.Revised Background Groundwater Quality Report:Existing
Wells For Denison Mines (USA)Corp.'s Wbite Mesa Mill Site,San Juan County,Utah.
INTERA,Inc.,November 16,2007.Revised Addendum:--Evaluation of Available
Pre-Operational and Regional Background Data,Background Groundwater Quality
Report:Existing Wells For Denison Mines (USA)Corp.'s White Mesa Mill Site,San
Juan County,Utah.
INTERA,Inc.,April 30,2008.Revised Addendum:--Background Groundwater Quality Report:
New Wells For Denison Mines (USA)Corp.'s White Mesa Mill Site,San Juan County,
Utah.
Johnson,H.S.,Jr.,and Thordarson,W.,1966.Uranium Deposits of the Moab,Monticello,
White Canyon,and Monument Valley Districts,Utah and Arizona,U.S.Geological
Survey Bulletin I222-H,53 p.
Keend,W.E.,1969.Quaternary Geology of the Grand and Battlement Mesa Area,Colorado:
U.S.G.S.Professional Paper,617.
Kelley,V.c.,1955.Regional Tectonics of the Colorado Plateau and Relationship to the Origin
and Distribution of Uranium,New Mexico University Publication Geology No.5,120 p.
Kelley,V.c.,1956.
Kelley,V.c.,1958,"Tectonics of the Region of the Paradox Basin."In Intermountain
Association Petroleum Geologists Guidebook,9th Annual Field Conference,Geology of
the Paradox Basin,p.31-38.
Kirkham,R.M.and Rogers,W.P.,1981.Earthquake Potential in Colorado,A Preliminary
Evaluation,Colorado Geological Survey,Bulletin 43.
Knight-Piesold LLC,November 23,1998.Evaluation of Potential for Tailings Cell Discharge-
White Mesa Mill.
SECTREF.H.PT\Novcmbcr2009
Page vi
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Krinitzsky,E.L.and Chang,F.K.,1975.State-of-the-Art for Assessing Earthquake Hazards in
the United States,Earthquake Intensity and the Selection of Ground Motions for Seismic
Design,Miscellaneous Paper S-73-1,Report 4,September 1975,U.S.Army Engineer
Waterways Experiment Station,CE,Vicksburg,Mississippi.
Larson,E.E.,et.aI.,1975.Late Cenozoic Basic Volcanism in Northwestern Colorado and its
Implications Concerning Tectonics and the Colorado River System in Cenozoic History of
Southern Rocky Mountains:Geological Society of America,Memoir 144.
Lawrence Livermore National Laboratory,1994.Seismic Hazard Analysis of Title II
Reclamation Plans;U.S.Nuclear Regulatory Commission.
Lindsay,L.M.W.,1978.Archeological Test Excavations on White Mesa,San Juan County,
Southeastern Utah.
McVehil-Monnett Associates,Inc.,January 20,2009.Semi-Annual Monitoring Report July 1 --
December 31,2008 and Annual Monitoring Summary for 2008,White Mesa Mill
Meteorological Station.
MITRE Software Corporation,GSLOPE Computer Software Package.
National Oceanic and Atmospheric Administration (NOAA),1977.
Precipitation Estimates,Colorado River and Great Basin Drainages.
Report (HMR)No.49.
Probable Maximum
Hydrometerological
National Oceanic and Atmospheric Administration (NOAA),1988.Computer Printout of
Earthquake File Record for 320 km Radius of Blanding,Utah.U.S.Department of
Commerce,National Geophysical Data Center,Boulder,Colorado.
NCRP,1987.Exposure of the Population in the United States and Canada from Natural
Background Radiation.National Council on Radiation Protection and Measurements
(NCRP)Report No.94.
Nielson,A.S.,1979.Additional Archeological Test Excavations and Inventory on White Mesa,
San Juan County,Southeastern Utah.
NUREG/CR-1081,March 1980.Characterization of Uranium Tailings Cover Materials for
Radon Flux Reduction.
SECTREF.RP'I\Novcmbcr2009
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
NUREG 1620,2003.Standard Review Plan for the Review of a Reclamation Plan for Mill
Tailings Sites Under title 11 of the Uranium Mill Tailings Radiation Control Act of 1978.
Revision I.
NUREGICR-2642,June 1982.Long-term Survivability of Riprap for Armoring Uranium Mill
Tailings and Covers:A Literature Review.
NUREGICR-2684,August 1982.Rock Riprap Design Methods and Their Applicability to
Long-term Protection of Uranium Mill Tailings Impoundments.
NUREGICR-3027,March 1983.Overland Erosion of Uranium Mill Tailings Impoundments
Physical Processes and Computational Methods.
NUREGICR-3061,November 1983.Survivability of Ancient Man-made Mounds:
Implications for Uranium Mill Tailings Impoundment.
NUREGICR-3199,October 1983.Guidance for Disposal of Uranium Mill Tailings:Long-term
Stabilization of Earthen Cover Materials.
NUREGICR-3397,October 1983.Design Considerations for Long-term Stabilization of
Uranium Mill Tailings Impoundments.
NUREGICR-3533,February 1984.Radon Attenuation Handbook for Uranium Mill Tailings
Cover Design.
NUREGICR-3674,March 1984.Designing Vegetation Covers for Long-term Stabilization of
Uranium Mill Tailings.
NUREGICR-3747,May 1985.The Selection and Testing of Rock for Armoring Uranium
Tailings Impoundments.
NUREGICR-3972,December 1984.Settlement of Uranium Mill Tailings Piles.
NUREGICR-4075,May 1985.Designing Protective Covers for Uranium Mill Tailings Piles:A
Review.
NUREGICR-4087,February,1985.Measurements of Uranium Mill Tailings Consolidation
Characteristics.
NUREGICR-4323,January 1986.The Protection of Uranium Tailings Impoundments against
Overland Erosion.
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White Mesa Mill Reclamation Plan
NUREGICR-4403,November 1985.Summary of the Waste Management Programs at Uranium
Recovery Facilities as They Relate to the 40 CFR Part 192 Standards.
NUREGICR-4480,September 1986.Erosion Protection of Uranium Tailings Impoundment.
NUREGICR-4504,March 1986.Long-term Surveillance and Monitoring of Decommissioned
Uranium Processing Sites and Tailings Piles.
NUREGICR-4520,April 1986.Predictive Gcochemical Modeling of Contaminant
Concentrations in Laboratory Columns and in Plumes Migrating from Uranium Mill
Tailings Waste lmpoundments.
NUREGICR-4620,June,1986.Methodologies for Evaluating Long-Term Stabilization Designs
of Uranium Mill Tailings lmpoundments,J.D.Nelson,S.R.Abt.,et.al.
NUREGICR-4651,May 1987.Development of Riprap Design Criteria by Riprap Testing in
Flumes:Phase I.
Nuttli,O.W.,1979.State-of-the-Art for Assessing Earthquake Hazards in the United States,Part
16:The Relation of Sustained Maximum Ground Acceleration and Velocity to
Earthquake Intensity and Magnitude,with Errata Sheet of January 11,1982;U.S.Army
Engineers Waterways Experiment Station,Vicksburg,P.O.No.DACW39-78-C-00n,67
p.with Two Appendices and 2 p.Errata.
Roger and Associates Engineering Company,1988.Radiological Properties Letters to C.O.
Scaly from R.Y.Bowser dated March 4 and May 9,1988.
Rogers and Associates,1996.
Schroeder,P.R.,J.M.Morgan,T.M.Walski,and A.C.Gibson,1989,"Technical Resource
Document,The Hydrologic Evaluation of Landfill Performance (HELP)Model,Version
II,"U.S.Environmental Protection Agency.
Seed,H.B.And ldriss,I.M.,1982.Ground Motions and Soils Liquefaction During Earthquakes,
Earthquake Engineering Research Institute,Berkeley,California.
Shoemaker,E.M.,1954.Structural Features
Colorado,New Mexico,and Arizona.
Geology of Utah,No.9,pp.48-69.
SECTREF.RP'I\No\'cmber 2009
of Southeastern Utah and Adjacent Parts of
Utah Geological Society Guidebook to the
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White Mesa Mill Reclamation Plan
Shoemaker,E.M.,1956, "Struetural Features of the Colorado Plateau and Their Relation to
Uranium Deposits."U.S.Geologieal Survey Professional Paper 300,p.155-168.
Simon,R.B.,1972.Seismicity,in Mallory,W.W.,and Others,eds.Geologic Atlas ofthe Rocky
Mountain Region,Rocky Mountain Association ofGeologists,pp.48-51.
Slemmons,D.B.,1977.State-of-the-Art for Assessing Earthquake Hazards in the United States,
Part 6,Faults and Earthquake Magnitude,with an Appendix on Geomorphic Features of
Active Fault Zones,U.S.Army Engineer Waterways Experiment Station,Vicksburg,
Contract No.DACW39-76-C-0009,129 p.plus 37 p.Appendix.
Smith,R.B.,1978.Seismicity,Crustal Structure,and Intraplate Tectonics of the Western
Cordillera,in Cenozoic Tectonics and Regional Geophysics of the Western Cordillera.
Smith,R.B.and Eaton,G.P.,eds,Memoir 152,Geological Society of America,pp.
111-144.
Smith,S.,1981.Long-Term Stability at Union Carbide's Tailings Piles in Uravan,Colorado.
Stephenson,D.,1979.Rockfill in Hydraulic Engineering,Developments in Geotechnical
Engineering,27,Elsevier Scientific Publishing Company,pp.50-60.See NUREG 4620.
Stokes,W.L.,1954.Stratigraphy of the Southeastern Utah Uranium Region,Utah Geological
Society Guidebook to the Geology of Utah,No.9,pp.16-47.
Stokes,W.L.,1967.A Survey of Southeastern Utah Uranium Districts,Utah Geological Society
Guidebook to the Geology of Utah,No.21,pp.I-II.
Tellco Environmental.National Emission Standards for Hazardous Air Pollutants Radon Flux
Measurement Program,White Mesa Mill Site,2008.
Thompson,K.c.,1967.Structural Features of Southeastern Utah and Their Relations to
Uranium Deposits,Utah Geological Society Guidebook to the Geology of Utah,No.
21,pp.23-31.
Thordarson,1966.
Titan Environmental Corporation,1994.
Titan Environmental Corporation,1994a.Hydrogeologic Evaluation of White Mesa Uranium
Mill,July 1994.
SECTREF.RPT\Novcmbcr 2009
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Titan Environmental Corporation,1994b.Points of Compliance,White Mesa Uranium Mill,
September 1994.
Titan Environmental Corporation,1996.Tailings Cover Design,White Mesa Mill,October 1996
Trifunac,M.D.and Brady,A.G.On the Correlation of Seismic Intensity Scales with the Peaks
of Recorded Strong Ground Motion,Seismological Society of America Bulletin,V.65,
Feb.1975,pp.139-162.
Umetco,1987.Umetco Minerals Corporation SUA-1358:Docket No.40-8681,License
Condition 48,White Mesa Mill,Utah,Letter From R.K.Jones to U.S.Nuclear Regulatory
Commission dated November 30,1987.
Umetco Minerals Corporation,1992,"Ground Water Study,White Mesa Mill,Blanding,Utah,"
License SUA 1358,Docket No.40-8681.
Umetco Minerals Corporation and Peel Environmental Services,1993.Groundwater Study,
White Mesa Facilities,Blanding,Utah.
United States Geological Survey,1970.
University of Utah,Department of Geophysics (T.Grant Hurst and D.Kip Solomon),May 2008.
Summary of work completed,data results,interpretations and recommendations for the
July 2007 Sampling Event at the Denison Mines,USA,White Mesa Uranium Mill Near
Blanding Utah.
UNSCEAR,2000.Sources and Effects of Ionising Radiation,Report to the General Assembly,
with Scientific Annexes,Volume I Sources,United Nations,New York.United Nations
Scientific Committee on the Effects of Atomic Radiation.
U.S.Department of Energy,1988.
U.S.Department of Energy,1993,"Environmental Assessment of Remedial Action at the Slick
Rock Uranium Mill Tailings Sites,Slick Rock,Colorado."UMTRA Project Office,
Albuquerque,New Mexico,February.
U.S.Geological Survey.
U.S.Geological Survey,1970.
SECTREF.RPT\Novcmbcr 2009
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White Mesa Mill Reclamation Plan
U.S.Nuclear Regulatory Commission,1977.Regulatory Guide 3.11,Design,Construetion,and
Inspection ofEmbankment Retention Systems for Uranium Mills,Revision 2,1977.
U.S.Nuclear Regulatory Commission.Regulatory Guide 3.64,Task WM 503-4,Calculation of
Radon Flux Attenuation by Earthen Uranium Mill Tailings Covers.
U.S.Nuclear Regulatory Commission,1979.Final Environmental Statement -White Mesa
Uranium Project,NUREG-0556.(
U.S.Nuclear Regulatory Commission,1980.
U.S.Nuclear Regulatory Commission,1984.Guidelines for Decontamination of Facilities and
Equipment Prior to Release for Unrestricted Use or Termination of Licenses for Byproduct
or Source Materials.
U.S.Nuclear Regulatory Commission,1985.Standard Review Plan for UMTRA Title 1 Mill
Tailings -Remedial Action Plans,Division ofWaste Management.
U.S.Nuclear Regulatory Commission,1987a.URFO:TTO,Docket No.40-8681,
04008681740S,Letter to Umetco Minerals Corporation (J.S.Hamrick)from F. F.
Hawkins dated January 26,1987.
U.S.Nuclear Regulatory Commission,1987b.10 CFR 40,Appendix A.
U.S.Nuclear Regulatory Commission,1987c.URFO:GRK,Docket No.40-8681, Letter to
Umetco Minerals Corporation from E.F.Hawkins dated October 21,1987.
U.S.Nuclear Regulatory Commission,1988.Docket No.40-8681 SUA-1358,Amendment
No.10.Letter to Umetco Minerals Corporation dated January 8,1988,from R.Dale
Smith.
U.S.Nuclear Regulatory Commission,1989.
U.S.Nuclear Regulatory Commission,1994.Background as a Residual Radioactivity Criterion
for Decommissioning.
U.S.Nuclear Regulatory Commission,1990.
U.S.Nuclear Regulatory Commission,Division of Fuel Cycle Safety and Safeguards,Office of
Nuclear Material Safety and Safeguards,2000.Environmental Assessment For the
Reclamation Plan for the White Mesa Mill.
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
U.S.Nuclear Regulatory Commission,Division of Fuel Cycle Safety and Safeguards,Office of
Nuclear Material Safety and Safeguards,August 22,2002.Environmental Assessment
For International Uranium (USA)Corporation's Uranium Mill Site White Mesa,San Juan
County,Utah,In Consideration Of An Amendment To Source Material License SUA-1358
For The Receipt And Processing Of The Maywood Alternate Feed.
U.S.Nuclear Regulatory Commission.Multi-Agency Radiation Survey and Site Investigation
Manual (MARSSIM)(NUREG-I575,Revision I).
U.S.Nuclear Regulatory Commission,2007.Regulatory Guide 4.15.Quality Assurance for
Radiological Monitoring Programs (Inception Through Normal Operations to License
Termination),Effluent Streams and the Environment,Rev.2.
University of Utah Seismograph Stations,1988.Computer List ofEarthquakes within 320 km of
Blanding,Utah,Department of Geology and Geophysics,University of Utah,Salt Lake
City.
von Hake,C.A.,1977.Earthquake History of Utah,Earthquake Information Bulletin 9,pp.
48-51.
Warner,L.A.,1978.The Colorado Lineament,A Middle Precambrian Wrench Fault System,
Geological Society of America Bulletin,v.89,pp.161-171.
Williams,P.L.,1964.Geology,Structure,and Uranium Deposits of the Moab Quadrangle,
Colorado and Utah,U.S.Geologic Survey Map,1-360.
Witkind,1.J.,1964.Geology of the Ab~jo Mountains Area,San Juan County,Utah,U.S.
Geological Survey,Professional Paper 453.
Woodward-Clyde Consultants,1982.Geologic Characterization Report of the Paradox Basin
Study Region,Utah Study Areas,ONWI-290,v.I,Prepared for Office of Nuclear Waste
Isolation,Battelle Memorial Institute.
Wong,1.G.,1981.Seismological Evaluation of the Colorado Lineament in the Intermountain
Region (abs.),Earthquake Notes,v.53,pp.33-34.
Wong,1.G.,1984.
ONWI-492,
Institute.
SECTREF,RPT\Novcll1bcr 2009
Seismicity of the Paradox Basin and the Colorado Plateau Interior,
Prepared for the Office of Nuclear Waste Isolation,Battelle Memorial
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White Mesa Mill Reclamation Plan
Zobaek,M.D.and Zobaek,M.L.,1980.State of Stress in the Conterminous United States,
Journal of Geophysical Research,v.85,pp.6113-6156.
SECTREF.RPT\Novcl1lbcr 2009
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
INTRODUCTION
This Reclamation Plan (the "Plan")has been prepared by Denison Mines (USA)Corp.
("Denison")!for Denison's White Mesa Uranium Mill (the "Mill"),located approximately 6.0
miles south of Blanding,Utah.This Plan presents Denison's plans and estimated costs for the
reclamation of the Mill's tailings Cells 1,2,3,and 4-A,and for decommissioning of the Mill and
Mill site.2
Summary ofPlan
The uranium and vanadium processing areas of the Mill,including all equipment,structures and
support facilities will be decommissioned and disposed of in tailings or buried on site as
appropriate.All equipment,including tankage and piping;agitation;process control
instrumentation and switchgears;and contaminated structures;will be cut up,removed,and buried
in tailings prior to final cover placement.Concrete structures and foundations will be demolished
and removed or covered with soil as appropriate.
The sequence of demolition will proceed so as to allow the maximum use of support areas of the
facility,such as the office and shop areas.Any uncontaminated or decontaminated equipment to
be considered for salvage will be released in accordance with United States Nuclear Regulatory
Commission ("NRC")guidance and in compliance with the conditions of the Mill's State of Utah
Radioactive Materials License No.UT1900479 (the "License").As with the equipment for
disposal,any contaminated soils from the Mill and surrounding areas and any ore or feed materials
I Prior to December 16,2006,Denison was named "International Uranium (USA)Corporation."
2 Cell 1 was previously referred to as Cell 1-1.It is now referred to as Cell 1.
Exec.Dave.WhiteMesa Mill Reclamation Plan Rev.4.0
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
on the Mill site will be disposed of in the tailings facilities in accordance with Section 4.0 of
Attachment A,Plans and Specifications.
The estimated reclamation costs for surety are set out in Attachment C.Attachment C will be
reviewed and updated on a yearly basis.
Plan Organization
General site characteristics pertinent to this Plan are contained in Section 1.0.Descriptions of the
facility construction,operations and monitoring are given in Section 2.0.The current
environmental monitoring program is described in Section 2.3.Seismic risk is assessed in
Section 1.6.2.3.
The reclamation plan itself,including descriptions of facilities to be reclaimed and design criteria,
is presented in Section 3.0.Section 3.0 Attachments A through H are the Plans and
Specifications,Quality Plan for Construction Activities,Cost Estimates,and supplemental testing
and design details.
Supporting documents,which have been reproduced as appendices for ease of review,include:
•Semi-Annual Effluent Reports (January through June,2008),(June through December,
2008)and (January through June,2009),for the Mill (Appendix A);
•Site Hydrogeology and Estimation of Groundwater Travel Times In The Perched Zone
White Mesa Uranium Mill Site Near Blanding,Utah,August 27,2009,prepared by Hydro
Geo Chern,Inc.(the "2009 HGC Report")(Appendix B);
•The Mill's Stormwater Best Management Practices Plan,Revision 1.3:June 12,
2008 (Appendix C);
Exec.Dave.White Mesa Mill Reclamation Plan Rev.4.0
1-3
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
•Tailings Cover Design,White Mesa Mill,October 1996.Titan (Appendix D,
previously submitted);
•National Emission Standards for Hazardous Air Pollutants Radon Flux
Measurement Program,White Mesa Mill Site,2008,Tellco Environmental
(Appendix E);and
•Semi-Annual Monitoring Report July 1 --December 31,2008 and Annual
Monitoring Summary for 2008,White Mesa Mill Meteorological Station,January
20,2009,McVehil-Monnett Associates,Inc.(Appendix F).
As required by Part I.H.ll of the Mill's State of Utah Ground Water Discharge Permit No.
UGW370004 (the "GWDP"),Denison is in the process of completing an infiltration and
contaminant transport model ofthe final tailings cover system to demonstrate the long-term ability
ofthe cover to protect nearby groundwater quality.Upon review of such modeling,the Executive
Secretary of the State ofUtah Radiation Control Board (the "Executive Secretary")will determine
if changes to the cover system as set out in this Plan are needed to ensure compliance with the
performance criteria contained in Part I.D.8 ofthe GWDP.Although the modeling has not been
completed,modeling results to date suggest that some changes to the final cover design as set out
in this Plan will be needed.However,as the details of such re-design have not been finalized at
this time,the approved 2000 cover design and basis will continue to be used for this version ofthe
Plan.This Plan will be amended in the future to incorporate any changes to the design of the
tailings cover system that result from the current modeling effort.
Denison has also submitted an application to the Executive Secretary to amend the License and the
GWDP to authorize the construction of tailings Ce1l4B,which will be located adjacent to Ce1l4A.
That application is currently under review by the Executive Secretary.Upon approval of that
application,this Plan will be amended to include Ce1l4B.
Exec.Dave.White Mesa Mill Reclamation Plan Rev.4.0
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
1.SITE CHARACTERISTICS
Denison operates the Mill,which is located approximately six miles south of Blanding,Utah (see
Figures 1-1 and 1-2).The Mill was initially licensed by the NRC in May,1980 under NRC
Source Material License No.SUA-1358.Upon the State of Utah becoming an Agreement State
for uranium mills in August,2004,the Mill's NRC license was replaced with the Mill's current
State ofUtah License and the Mill's GWDP.
The License was up for timely renewal on March 31,2007 in accordance with Utah
Administrative Code ("UAC")R313-22-36.1 In accordance with R313-22-36,Denison
submitted an application to the Executive Secretary on February 27,2007 for renewal of the
License under R313-22-37 (the "2007 License Renewal Application").Similarly,the GWDP is
up for timely renewal on March 8,2010,in accordance with UAC")R317-6-6.7.On September
2,2009,Denison filed an application (the "2009 GWDP Renewal Application")to the Executive
Secretary for renewal of the GWDP for another 5-years under R313-6-6.7.
The Mill is also subject to State of Utah Air Quality Approval Order DAQE-ANI205005-06 (the
"Air Approval Order")which was re-issued on July 20,2006 and is not up for renewal at this
time.
1 The License was originally issued by the NRC as a source material license under 10 CFR Part 40 on March 3I,1980.It was
renewed by NRC in 1987 and again in 1997.After the State of Utah became an Agreement State for uranium mills in August
2004,the License was re-issued by the Executive Secretary as a State of Utah Radioactive Materials License on February 16,
2005,but the remaining term ofthe License did not change.
SECTOI.RPTlNovember 2009
San Juan
FIGURE 1-1
REGIONAL LOCATION MAP
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6
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....~/....'!I ,;"..~....
\,..j ,~\'-..i ~"~i (,~,......-.
j "\\\..~1 :':22 2J "')-\'/~~\~,..i 2024:19 :20:"(I.
/,-'....!,/:~,••,.•,••,••,••,,.~.!,"..:\::')It'"!;i !I.,~f.!j
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22
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\\,.1/......_'to.l.~'"-,'t·'I ../:/.'+l'~).;\':",.~..,...~!...,..;:)\.:.'.,,J ./Ii ~r •.'\•~r-,,~~',".••'.i l/:~~III !~.\q,.c 1;,Jllj /~1 ",;J2 ;JJlJ6./J1'>.....&;~JI JJ ,~...,I ('Q !,.,~....e.II'~.s......."-',:S I CEll NO.••l~';,1<>"/:/..i i ...":.)~;~'&\'So r ".I"/0 ~.,:J ....."...tl ~'
,.:~,:\~..~\.J'...',.I:.\\i -~;,V !j :I ".....,,~I -Ii i 'C,/~,...
.."._••1 ~r-"5 4:...:r :>0 2"((,,:6 ,'11"5).....4
....I::~!:\'i,,\'...-;.\\!""./,.f"i'';·-•~••~'I(!,.i DENISON MINES USA)CORP.:..'"'L'.'j ...'J'I (,/.
..I,'i 1\('...,;:I'
9
17 16
20 21
29 28
Dale 8v County;SanJuan f;:'Iae:UtahLOCatIOn:
FIGURE 1-2 ,
LOCATION MAP
I,uate Mav.1999 (Scale 1"=8000IAUmOI:OfaftedBy_RAH
1-4
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Revision 3.0 of this Plan was submitted to and approved by NRC in 2000.A copy of Revision
3.0 of this Plan was also submitted to the Executive Secretary as part ofthe 2007 License
Renewal Application.Upon request of the Executive Secretary,Denison has prepared this
Revision 4.0 of the Plan,which updates the Plan to incorporate changes since 2000.
This Section 1.0 of the Plan incorporates by reference,updates or supplements information
previously submitted in previous environmental analyses performed at the Mill,as described
below.
A Final Environmental Statement Related to Operation ofWhite Mesa Uranium Project,Energy
Fuels Nuclear, Inc.,May,1979,Docket No.40-8681 (the "FES")was prepared by NRC for the
original License application in May 1979,which is incorporated by reference into,updated or
supplemented by this Section 1.0.The basis for the FES was the Environmental Report,White
Mesa Uranium Project San Juan County,Utah,dated January 1978,prepared by Dames &
Moore (the "1978 ER").In addition,the following environmental evaluations and other reports
have also been performed for the Mill and are incorporated by reference into,updated or
supplemented by this Section 1.0:
•the Environmental Assessment ("EA")that was prepared for this Plan in February 2000
by NRC (the "2000 EA");
•the EA that was prepared in August,2002 by NRC (the "2002 EA")in connection with a
License amendment issued by NRC authorizing receipt and processing at the Mill of
certain alternate feed materials from the Maywood Formerly Utilized Sites Remedial
Action Program site in Maywood,New Jersey;
SECTOJ,RPT\November2009
1-5
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
•the Statement of Basis that was prepared in December 2004 by the State of Utah
Department of Environmental Quality ("UDEQ")Division of Radiation Control ("DRC")
in connection with the issuance of the GWDP (the "GWDP Statement of Basis");
•the Environmental Report in Support of the License Renewal Application,State of Utah
Radioactive Materials License No.UT1900479,February 28,2007 (the "2007 ER");
•the Revised Background Groundwater Quality Report:Existing Wells For Denison
Mines (USA)Corp.'s White Mesa Mill Site,San Juan County,Utah,October 2007,
prepared by INTERA,Inc.(the "Existing Well Background Report");
•the Revised Addendum:--Evaluation of Available Pre-Operational and Regional
Background Data,Background Groundwater Quality Report:Existing Wells For
Denison Mines (USA)Corp.'s White Mesa Mill Site,San Juan County,Utah,November
16,2007,prepared by INTERA,Inc.(the "Regional Background Report");and
•the Revised Addendum:--Background Groundwater Quality Report:New Wells For
Denison Mines (USA)Corp.'s White Mesa Mill Site,San Juan County,Utah,April 30,
2008,prepared by INTERA,Inc.(the "New Well Background Report",and together with
the Existing Well Background Report and the Regional Background Report,the
"Background Reports").
SECTOl.RPTINovember2009
1-6
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
1.1 Climate and Meteorology
1.1.1 Regional
The climate of southeastern Utah is classified as dry to arid continental.Although varying
somewhat with elevation and terrain,the climate in the vicinity of the Mill can be considered as
semi-arid with normal annual precipitation of about 13.32 inches.See Table 1.1-1.Most
precipitation is in the form of rain with snowfall accounting for about 29%of the annual total
precipitation.There are two separate rainfall seasons in the region,the first in late summer and
early autumn (August to October)and the second during the winter months (December to
March).The mean annual relative humidity is about 44 percent and is normally highest in
January and lowest in July.The average annual Class A pan evaporation rate is 68 inches
(National Oceanic and Atmospheric Administration and U.S.Department of Commerce,1977),
with the largest evaporation rate typically occurring in July.This evaporation rate is not
appropriate for determining water balance requirements for the tailings management system and
must be reduced by the Class A pan coefficient to determine the latter evaporation rate.Values
of pan coefficients range from 60%to 81 %.Denison assumes for water balance calculations an
average value of 70%to obtain an annual lake evaporation rate for the Mill area of 47.6 inches.
Given the annual average precipitation rate of 13.32 inches,the net evaporation rate is 34.28
inches per year.
SECTOl.RPTlNovember 1009
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Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
The weather in the Blanding area is typified by warm summers and cold winters.The National
Weather Service Station in Blanding,Utah is located about 6.25 miles north of the Mill.Data
from the station is considered representative of the local weather conditions (1978 ER,Section
2.7.2).The mean annual temperature in Blanding was 50.3°P,based on the current Period of
Record Summary (1904 -2006).January is usually the coldest month and July is usually the
warmest month.See Table 1.1-2
Table 1.1-1
Period of Record General Climate Summary -Precipitation
55.0 1909
o 0.3 6.0 1984
o 3.3 19.0 1931
>=
in.1.00 in.
34
>=
23/1909
Precipitation
I Day Max.
I·········1
I,dd/yyyy i
in.i or 'II #Days
Iyyyymmdd,
Station:(420738)BLANDING
From Year=1904 To Year=2006
High
in. in.
January 1.39 5.31
1,~.....--,r
15/1978 6 41993iO.OO 11972
February 1.21 7.3 39.7 1913
1932 1.13 0111970 6 4.4 17.9 1970
5 2
4
IS~pt~l~b~rl 1.28
1.45 7.01 191610.00 191512.00
INo~el~beri 1.05
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Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
2 0 27.9 100.2 1979
2 0 0.0 2.5 1906
3.7 19.5 1908
o 6.5 28.7 1970
2
7 38.2 121.0 19091909195614.48 19680801 62 36
11.95 1909 17 10
7.77 11926 10 1972 1.33 19870404 15 8
6.90 1987 12 1960 14.48 19680801 16 8
8.70 1972 1917 14 9
Table updated on Jul 28,2006
For monthly and annual means,thresholds,and sums:
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered
Seasons are climatological not calendar seasons
Winter =Dec.,Jan.,and Feb.Spring =Mar.,Apr.,and May
Summer =Jun.,Jul.,and Aug.Fall =Sep.,Oct.,and Nov.
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Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Table 1.1-2
Period of Record General Climate Summary -Temperature
Station:(420738)BLANDING
From Year=1904 To Year=2006
Monthly Daily Extremes Monthly Extremes Min.Temp.Averages
',························f······,""",·,··r""""""""""""";\I-ligh~stIY ·IL~\\IestjMax.!Min.IMean /High Date Date >=<=<=,,ear i 90F 32F OF~l !1Mean 1 1Mean
I dd/yyyy dd/yyyy ###F F F F !or F or F F Days Days Days,yyyymmdd
39.1 17.2 28.2 63 31/2003 -20 12/1963 40.2 12.6 1937 0.0 6.2 30.3 1.8
22.3 33.6 7I 28/1906 -23 08/1933 44.2 995 18.8 1933 0.0 2.0 26.1 0.7
27.8 40.3 86 31/1906 -3 28/1975 33.0 1948 0.0 0.3 23.4 0.0
48.2 88 19/1905 10 24/1913 56.9 1992 39.4 1928 0.0 0.0 12.4 0.0
15 50.1 1917 0.4 0.0 2.7 0.0
28 03/1908 75.3 0.0 0.2 0.0
73.3 109 19/1905 36 15/1934 0.0 0.0 0.0
56.2 71.2 106 18/1905 38 23/1968 77.2 1926 0.0 0.0
ISeptelllber I78.2 /48.3 63.3 100 01/1905 20 26/1908 1.3 0.0 0.3 0.0
99 08/1905 10 30/1971 0.1 0.0 6.6 0.0
74 04/1905 -7 23.6 0.1
65
3.4
19.3 1933 0.0 12.7 86.4 3.3
98 20020531 -3 43.6 1909 0.4 0.3 38.5 0.0
110 19050622 28 19080603 76.412.()()21 67.4 11941 30.4 0.0 0.2 0.01
100 19050901 -7 19311125 47.8 1912 1.4 0.4 30.5 0.1
Table updated on luI 28,2006
For monthly and annual means,thresholds,and sums:
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered
SECTOI.RPTINovember 2009
SECTO1.RPTlNovember:2009
1-10
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Seasons are climatological not calendar seasons
Winter =Dec.,Jan.,and Feb.Spring =Mar.,Apr.,and May
Summer =Jun.,Jul.,and Aug.Fall =Sep.,Oct.,and Nov.
1-11
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Winds are usually light to moderate in the area during all seasons,although occasional stronger
winds may occur in the late winter and spring.The predominant winds are from the north
through north-east (approximately 30 percent of the time)and from the south through south-west
(about 25 percent of the time).Winds are generally less than 15 mph,with wind speeds faster
than 25 mph occurring less than one percent of the time (1978 ER,Section 2.7.2).As an element
of the pre-construction baseline study and ongoing monitoring programs,the Mill operates an
onsite meteorological station,described in greater detail below.Further details about weather
and climate conditions are provided in the 1978 ER (Section 2.7)and in the FES (Section 2.1).
1.1.2 Storms (FES Section 2.1.4,updated)
Thunderstorms are frequent during the summer and early fall when moist air moves into the area
from the Gulf of Mexico.Related precipitation is usually light,but a heavy local storm can
produce over an inch of rain in one day.The maximum 24-hour precipitation reported to have
fallen during period 1904-2006 at Blanding was 4.48 inches (11.36 cm).Hailstorms are
uncommon in this area.Although winter storms may occasionally deposit comparable amounts
of moisture,maximum short-term precipitation is usually associated with summer thunderstorms.
Tornadoes have been observed in the general region,but they occur infrequently.Strong winds
can occur in the area along with thunderstorm activity in the spring and summer.The Mill area
is susceptible to occasional dust storms,which vary greatly in intensity,duration,and time of
occurrence.The basic conditions for blowing dust in the region are created by wide areas of
SECTO1.RPT\Novcmber2009
1-12
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
exposed dry topsoil and strong,turbulent winds.Dust storms usually occur following frontal
passages during the warmer months and are occasionally associated with thunderstorm activities.
1.1.3 On Site
On-site meteorological monitoring at the Mill was initiated in early 1977 and continues today.
The original purpose of the meteorological monitoring program was to document the regional
atmospheric baseline and to provide data to assist in assessing potential air quality and
radiological impacts arising from operation of the Mill.
After the Mill construction was completed,the monitoring programs were modified to facilitate
the assessment of Mill operations.The current meteorological monitoring program includes data
collection for wind speed,wind direction,atmospheric stability according to the standard
Pasquill scheme (via measurements of deviations in wind direction,referred to as sigma-theta),
and precipitation as either rain or snow.The recorded on-site meteorological conditions are
reported to Denison on a semi-annual basis and are described in semi-annual reports prepared for
Denison and maintained at the Mill.Figure 1.1-1 shows the windrose for the Mill site for the
period of January -December 2008,the most recent full year of compiled meteorological data.
SECTOI.RPT\i'iovember 1009
White MesaMill
Blanding,utah
WInd Speed
DIrection (blowingfrom)
.1
".'
WIND SPEED
(mfs)
>=11.1
8.8 -11.1
5.7-8.8
3.6-5.7o2.1-3.6
•D.5-2.1
caJms:0.23%
:
",,
/,
I.-,
I,
II
I,
""",
I,
.i.J~
",,'····,
'·~~·-------i--·---·~···I,,
"..........:SOUTH--...._~..-..-.__1._.---,--~--_·-
~40"
",~',,,
",,,,,,
I,,,.,.I..I..
DATAPfRJOD:COMPANYNAMI!:
2006
Je1-D1e31
00:00 -23:00
CALMWINDS:
DenisonMines
MODeLER:
McVehll-Monnett
AssocIates
TOTALq)Uffr:
FIGURE 1.1-1
0.23%8149hrs.
3.9m/s 2018-06
1-14
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
1.2 Topography
The following text is reproduced from Section 2.3 of the FES.
The site is located on a "peninsula"platform tilted slightly to the south-southeast and surrounded
on almost all sides by deep canyons,washes,or river valleys.Only a narrow neck of land
connects this platform with high country to the north,forming the foothills of the Abajo
Mountains.Even along this neck,relatively deep stream courses intercept overland flow from
the higher country.Consequently,this platform (White Mesa)is well protected from runoff
flooding,except for that caused by incidental rainfall directly on the mesa itself.The land on the
mesa immediately surrounding the Mill site is relatively flat.
1.3 Archeological Resources
The following discussion of archeological sites is adapted from Section 2.5.2.3 ofthe FES.
1.3.1 Archeological Sites
Archeological surveys of portions of the entire Mill site were conducted between the fall of 1977
and the spring of 1979.The total area surveyed contained parts of Section 21,22,27,28,32,and
33 of T37S,R22E,and encompassed 2,000 acres (809 ha),of which 200 acres (81 ha)are
administered by the U.S.Bureau of Land Management ("BLM")and 320 acres (130 ha)are
owned by the State of Utah.The remaining acreage is privately owned.During the surveys,121
sites were recorded and all were determined to have an affiliation with the San Juan Anasazi who
occupied this area of Utah from 0 A.D.to 1300 A.D.All but 22 of the sites were within the Mill
site boundaries.
SECTO1.RPT\I\'ovember2009
1-15
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Table 1.3-1,adapted from FES Table 2.18,summarizes the recorded sites according to their
probable temporal positions.The dates of occupation are the best estimates available,based on
professional experience and expertise in the interpretation of archeological evidence.Available
evidence suggests that settlement on White Mesa reached a peak in perhaps 800 A.D.
Occupation remained at approximately that level until some time near the end of Pueblo II or in
the Pueblo II1Pueblo III transition period.After this period,the population density declined
sharply,and it may be assumed that the White Mesa area was,for the most part,abandoned by
about 1250 A.D.
Archeological test excavations were conducted by the Antiquities Section,Division of State
History,in the spring of 1978,on 20 sites located in the area later to be occupied by tailings cells
2,3 and 4 (now comprised of Ce1l4A and proposed Ce1l4B).Of these sites,12 were deemed by
the State Archeologist to have significant National Register potential and four to have possible
significance.The primary determinant of significance in this study was the presence of
structures,though storage features and pottery artifacts were also common.
In the fall of 1978,a surface survey was conducted on much of the previously unsurveyed
portions of the proposed Mill site.Approximately 45 archeological sites were located during this
survey,some of which are believed to be of equal or greater significance than the more
significant sites from the earlier study.Determination of the actual significance of all untested
sites would require additional field investigation.
SECTO1.RPTINovember1009
TABLE 1.3-1
Distribution of Recorded Sites According to Temporal Position
Temporal position
Basket Maker III
Basket Maker IIIlPueblo I
Pueblo I
Pueblo I1Pueblo II
Pueblo II
Pueblo IIIPueblo III
Pueblo III
Pueblo II+
Multicomponent
Unidentified
Approximate dates (A.D.)a
575-750
575-850
750-850
850-950
950-1100
1100-1150
1150-1250
b
c
d
Number of sites
2
27
12
13
14
12
8
5
3
14
a Includes transitional periods.
b Although collections at these locations were lacking in diagnostic material,available
evidence indicates that the site would have been used or occupied no earlier than 900 A.D.and
possibly later.
c Ceramic collections from each of these sites indicate an occupation extending from
Pueblo I through Pueblo II and into Pueblo III.
d These sites did not produce evidence strong enough to justify any identification.
Source:Adapted from Dames &Moore (1978b)(1978 ER),Table 2.3-2,FES,Page 2-20,Table
2.18,and from supplementary reports on project archeology.
1-17
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Pursuant to 10 CFR Part 63.3,the NRC submitted on March 28,1979,a request to the Keeper of
the National Register for a determination of eligibility for the area which had been surveyed and
tested.The area contained 112 archeological sites and six historical sites.The determination by
the Keeper of the National Register on April 6,1979,was that the White Mesa Archeological
District is eligible for inclusion in the National Register.
1.3.2 Current Status of Excavation
Archeological investigations for the entire Mill site and for Cells 1 through Cell 4 (now
comprised of Cell 4A and proposed Cell 4B)were completed with the issuance of four separate
reports covering 30 sites,excluding re-investigations.(Lindsay 1978,Nielson 1979,Casjens et
a11980,and Agenbroad et al 1981).
The sites reported as excavated are as follows:
6380 6394 6437
6381 6395 6684
6384 6396 6685
6385 6397 6686
6386 6403 6697
6387 6404 6698
6388 6420 6699
6391 6429 6754
6392 6435 6757
6393 6436 7754
SECTOI.RPTINovember 2009
1-18
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Sites for which excavation has not been required are:
6379
6382
6405
6441
6443
6444
7658
7659
7660
7690
7691
7693
The sites remaining to be excavated are (continued):
6408 6445 7661 7696
6421 6739 7665 7700
6427 6740 7668 7752
6430 7653 7675 7876
6431 7655 7684 8014
6432 7656 7687
6439 7657 7689
The following site was excavated 111 2009 111 connection with the construction of the new
decontamination pad at the Mill:
42Sa27732
The following sites are currently under investigation in connection with the construction of
proposed Ce1l4B:
42Sa6391
42Sa6392
42Sa6393
42Sa6397
SECTOJ.RPTINovember2009
42Sa6431
42Sa6757
42Sa8014
42Sa28128
42Sa28129
42Sa28130
42Sa28131
42Sa28132
42Sa28133
42Sa28134
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Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
1.4 Surface Water
The following description of undisturbed surface water conditions is adapted from Section 2.6.1
of the FES and Section 3.7.1 of the 2007 ER updated to include current data.
The Mill was designed and constructed to prevent runon or runoff of storm water by a)diverting
runoff from precipitation on the Mill site to the tailings cells;and b)diverting runoff from
surrounding areas away from the Mill site.In addition to these designed control features,the
facility has developed a Stormwater Best Management Practices Plan,Revision 1.3:June 12,
2008 which includes a description of the site drainage features and the best management
practices employed to assure appropriate control and routing of stormwater.A copy of the Mill's
Stormwater Best Management Practices Plan is included as Appendix C to this Plan.
1.4.1 Surface Water Description (FES Section 2.6.1.1)
The Mill site is located on White Mesa,a gently sloping (1 %SSW)plateau that is physically
defined by the adjacent drainages which have cut deeply into regional sandstone formations.
There is a small drainage area of approximately 62 acres (25 ha)above the site that could yield
surface runoff to the site.Runoff from the Mill area is conducted by the general surface
topography to either Westwater Creek,Corral Creek,or to the south into an unnamed branch of
Cottonwood Wash.Local porous soil conditions,topography and low acreage annual rainfall of
13.32 inches cause these streams to be intermittently active,responding to spring snowmelt and
local rainstorms (particularly thunderstorms).Surface runoff from approximately 384 acres (155
ha)of the Mill site drains westward and is collected by Westwater Creek,and runoff from
SECTOI.RPTlNovember 2009
1-20
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
another 384 acres (155 ha)drains east into Corral Creek.The remaining southern and
southwestern portions of the site drain indirectly into Cottonwood Wash (Dames &Moore,
1978b,p.2-143).The site and vicinity drainages carry water only on an intermittent basis.The
major drainages in the project vicinity are depicted in Figure 1.4-1 and their drainages tabulated
in Table 1.4-1.Total runoff from the site area (total yield per watershed area)is estimated to be
less than 0.5 inch (l.3cm)annually (Dames &Moore,1978b,p.2-143).
There are no perennial surface waters on or in the vicinity of the Mill site.This is due to the
gentle slope of the mesa on which the site is located,the low average annual rainfall of 13.32
inches (33.8 cm)per year at Blanding,local soil characteristics and the porous nature of local
stream channels.Prior to construction,three small ephemeral catch basins were present on the
site to the northwest and northeast of the Mill site.
Corral Creek is an intermittent tributary to Recapture Creek.The drainage area ofthat portion of
Corral Creek above and including drainage from the eastern portion of the site is about 5 square
miles (13 km2).Westwater Creek is also an intermittent tributary of Cottonwood Wash.The
Westwater Creek drainage basin covers nearly 27 square miles (70 km2)at its confluence with
Cottonwood Wash 1.5 miles (2.5 km)west of the Mill site.Both Recapture Creek and
Cottonwood Wash are similarly intermittently active,although they carry water more often and
for longer periods of time due to their larger watershed areas.They both drain to the south and
are tributaries of the San Juan River.The confluences of Recapture Creek and Cottonwood
Wash with the San Juan River are approximately 18 miles (29 km)south of the Mill site.The
San Juan River,a major tributary for the upper Colorado River,has a drainage of 23,000 square
miles (60,000 km2)measured at the USGS gauge to the west of Bluff,Utah (Dames &Moore,
1978b,p.2-130).
SECTOl.RPTlNovember2009
USGS GAUGE NO.09376900
USGS GAUGE NO.09378630
USGS GAUGE NO.09378700
Project
Denison Mines (USA)Corp.
WHITE MESA MilL
ate:UT
Figure 1.4-1
Drainage Map of the Vicinity
of the White Mesa Mill
TABLE 1.4-1
Drainage Areas of Project Vicinity and Region
Drainage area
Basin description
km2 sq.miles
Corral Creek at confluence 15.0 5.8
with Recapture Creek
Westwater Creek at confluence 68.8 26.6
with Cottonwood Wash
Cottonwood Wash at USGS <531 <205
gage west of project site
Cottonwood Wash at confluence <860 <332
with San Juan River
Recapture Creek at USGS gage 9.8 3.8
Recapture Creek at confluence <518 <200
with San Juan River
San Juan River at USGS gage <60,000 <23,000
downstream at Bluff,Utah
Source:Adapted from Dames &Moore (1978b),Table 2.6-3
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Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Storm runoff in these streams is characterized by a rapid rise in the flow rates,followed by rapid
recession primarily due to the small storage capacity of the surface soils in the area.For
example,on August 1,1968,a flow of 20,500 cfs (581 m3/sec)was recorded in Cottonwood
Wash near Blanding.The average flow for that day,however,was only 4,340 cfs (123 m3/sec).
By August 4,the flow had returned to 16 cfs (0.5 m3/sec)(Dames &Moore,1978b,p.2-135).
Monthly streamflow summaries updated from Figure 2.4 of the FES are presented in Figure 1.4-
2 for Cottonwood Wash,Recapture Creek and Spring Creek.Flow data are not available for the
two smaller water courses closest to the Mill site,Corral Creek and Westwater Creek,because
these streams carry water infrequently and only in response to local heavy rainfall and snowmelt,
which occurs primarily in the months of April,August,and October.Flow typically ceases in
Corral and Westwater Creeks within 6 to 48 hours after precipitation or snowmelt ends.
1.4.2 Surface Water Quality as of the Date of the FES (FES Section 2.6.1.2)
Sampling of surface water quality in the Mill vicinity began in July 1977 and continued through
March 1978.Baseline data describe and evaluate existing conditions at the Mill site and vicinity.
Sampling of the temporary on-site surface waters (two catch basins)was attempted but without
success because of the lack of naturally occurring water in these basins.Sampling of ephemeral
surface waters in the vicinity was possible only during major precipitation events,as these
streams are normally dry at other times.See FES Section 2.6.1.2
The locations of the surface water sample sites used prior to Mill operations are presented in
Figure 1.4-3.The water quality values obtained for these sample sites are given in Dames &
Moore (1978b)Table 2.6-7,and FES Table 2.22.Water quality samples were collected during
the spring at several intermittently active streams that drain the Mill area.These streams include
Westwater Creek (SIR,S9)Corral Creek below the small irrigation pond (S3R),the junction of
SECTOI.RPTINovember2009
AVERAGE ANNUAL FLOW=6547 AF -(1965-1986)
DRAINAGE AREA=205 sa.MI.
AVERAGE ANNUAL YIELD=32AF/sa.MI.400
I-350wwu..W 300a::uc(
~250
0...Ju..200>-...J:I:I-150z0::Ew 100(!)
~50w>c(
AVERAGE ANNUAL FLOW=950 AF -(1966-2001)
DRAINAGEAREA=3.nsa.MI.
AVERAGE ANNUAL YIELD=252.1 AF/sa.MI.
YIELD·AF/sa.MI
MIN.AVG.
2.7 252
(1990)
-
,..--.,.J
MAX.
881
(1983)
1600
Iii 1400wu..~1200
~~1000g ,-
u..800~:I:~600o::E .----
w 400~w 200 _~
-
YIELD-AF/sa.MI
MIN.AVG.
4.9 32
(1976)
MAX.
88
(1983)
JAN FEB MAR APR MAY JUN JUl AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
MONTH
RECAPTURE CREEK NEAR BLANDING
USGS GAUGE 09378630
MONTH
conONWOOD WASH NEAR BLANDING
USGS GAUGE 09378700
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
AVERAGEANNUAL FLOW=7757 AF•(1966-1971)
DRAINAGE AREA=4.95 sa.MI.
AVERAGEANNUAL YIELD=153 AF/sa.MI.
MONTH
SPRING CREEK ABOVE DIVERSIONS,
USGS GAUGE 09376900
MAX.
262
(1966)
IDralted By:DLS
WHITE MESA MILL
FIGURE 1.4-2
Streamflow Summary
Blanding,UT Vicinity
IDesign:
San Juan T olale:Utah
Nov.2009Dale:
County:
IProJect:
Denison Mines (USA)Corp.IJENISONf)~~
MINES
NOTES
1.FOR THE LOCATION OF WATER COURSES
SUMMARIZED,SEE FIGURE 3.7-1
2.SOURCEOF DATA.WATER RESOURCES DATA RECORDS.
COMPILED AND PUBLISHED BY USGS.
I
YIELD·AF/sa.MI
MIN.AVG.
46.9 153
(1971)
350 L300
250
200
150
100 ,[50
0
400I-WWu..Wa::uc(
~0...Juu..al >-0;...Ju:I:
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PROPERTY BOUNDARY
Denison Mines (USA)Corp.IOENISOJ)JJ
MINES
RESERVATION BOUNDARY
Project:WHITE MESA MILL
County:San Juan -rmate:Utah
•••_•••CANYON RIM
s.SURFACE WATER SAMPLING LOCATION
FIGURE 1.4-3
Surface Water Quality Sampling
Stations in the White Mesa Vicinity
Dato:Nov.2009 IDesign:IDr.~edBy:DLS
1-26
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Corral Creek and Recapture Creek (S4R),and Cottonwood Creek (S8R).Samples were also
taken from a surface pond southeast of the Mill (S5R).No samples were taken at S2R on Corral
Creek or at the small wash (S6R)located south of the site.
Natural surface water quality in the vicinity of the Mill is generally poor.Waters in Westwater
Creek (S 1R and S9)were characterized by high total dissolved solids (TDS;mean of 674
mg/liter)and sulfate levels (mean 117 mg of S04 per liter).The waters were typically hard (total
hardness measured as CaC03;mean 223 mg/liter)and had an average pH of 8.25.Estimated
water velocities for Westwater Creek averaged 0.3 fps (0.08 rnlsec)at the time of sampling.
Samples from Cottonwood Creek (S8R)at the time of the FES were generally similar in quality
to Westwater Creek water samples,although the TDS and sulfate levels were lower (TDS
averaged 264 mg/liter;S04 averaged 40 mg/liter)during heavy spring flow conditions [80 fps
(24 rnlsec)water velocity].
The concentrations of TDS increased downstream in Corral Creek,averaging 3,180 mg/liter at
S3R and 6,660 mg/liter (one sample)at S4R.Total hardness averaged in excess of 2,000
mg/liter,and pH values were slightly alkaline.Estimated water velocities in Corral Creek were
typically less than 0.1 fps (0.03 rnlsec)during sampling.
The spring sample collected at the surface pond south of the Mill site (S5R)indicated a TDS
concentration of less than 300 mg/liter.The water was slightly alkaline with moderate dissolved
sulfate levels averaging 42 mg/liter.
During heavy runoff,the concentration of total suspended solids in these streams increased
sharply to values in excess of 1,500 mg/liter (FES,Table 2.22).High concentrations of certain
trace elements were measured in some sampling areas.Levels of mercury (total)were reported
SECT01.RPT\NovemberlOW
1-27
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
as high as 0.002 mg/liter (S3R,7/25/77;S8R,7/25/77).Total iron measured in the pond (S5R,
11110/77)was 9.4 mg/liter.The FES concluded (Section 2.6.1.2 of the FES)that these values
appear to reflect groundwater quality in the vicinity and are probably due to evaporative
concentration and not due to human perturbation of the environment.Corral Creek was also
sampled at the time of the FES,but it has not been included in subsequent operational
monitoring at the Mill.See Table 2.22 of the FES for sampling results for Corral Creek.
1.4.3 Surface Water Background Quality
Surface water samples are collected for Cottonwood Wash and Westwater Creek as part of the
Mill's operational monitoring program.Samples were also taken prior to Mill construction and
summarized in the FES as well as at various times and for various parameters since then.A
comparison of the FES results and subsequent sampling results during Mill operation is set out in
Table 1.4-2.Surface water values over time for both Cottonwood Wash and Westwater Creek
are included in the Semi-Annual Effluent Reports.
Table 1.4-2
Summary ofFES and Subsequent Sampling Results For
Cottonwood Wash and Westwater Creek
FES FES
Parameter Cottonwood Wash Cottonwood Wash Westwater Creek Westwater Creek
(7/25177-3/28178)(9/16/81-6/20/09)(11/10177-3/23/78)(2/22/82-6/20/09)
Field Specific Conductivity (/lmhos/cm)240-550 -320-620 -
Field pH 6.6 to 8.1 -7.6-8.3 -
Dissolved Oxygen ----
Temperature (0C)6.0 to 35 -3-14 -
Estimated Flow m/hr 0.4 to 80 -0.28 to 39.9 -
pH 7.5to8.21 -8.2 to 8.35 -
Determination,mglliter
TDS (@180°C)253 to 944 IOto803 496 to 969 93-909
SECTOI.RPT\November2009
1-28
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
FES FES
Parameter Cottonwood Wash Cottonwood Wash Westwater Creek Westwater Creek
(7/25177 -3/28178)(9/16/81-6/20/09)(11/10/77-3/23/78)(2/22/82-6120/09)
Redox Potential 210 to 260 -186 to 220 -
Alkalinity (as CaCOS3)134 to 195 76 to 257 147 to 229 230
Hardness,total (as CaC03)148 to 195 -117 to 289 -
Carbonate (as C03)0.0 -0.0 to 2.3 -
Aluminum,dissolved 0.16t03.0 -0.1 to 4.0 -
Ammonia (as N)<0.1 toO.16 -<0.1 to 0.75 -
Arsenic,total 0.02 to 0.041 -0.007 to 0.037 -
Barium,total 0.2 to 1.2 -<0.2 to 0.81 -
Boron,total <0.1 to 0.2 -<0.1 to 0.1 -
Cadmium,total <0.002 to 0.01 -<0.002 to 0.006 -
Calcium,dissolved 54 to 178 -76 to 172 -
Calcium -37 to 71 -94.5
Chlorine ----
Chloride 6 to 24 5 to 33.3 17 to 125 76
Sodium -18 to 104 -160.5
Sodium,dissolved 21 to 66 -31 to 60 -
Silver,dissolved 0.002 to <0.005 -<0.005 to 0.006 -
Sulfate,dissolved (as S04)39.7 to 564 57 to 245 85 to 163 408
Vanadium,dissolved <0.005 to <0.01 -<0.001 to 0.008 -
Magenese,dissolved 0.02 to 0.84 -0.03 to 0.60 -
Chromium,total <0.01 toO.14 -<0.01 to 0.60 -
Copper,total 0.005 to 0.09 -<0.005 to 0.05 -
Fluoride,dissolved 0.2 to 0.36 -0.2 to 0.4 -
Iron,total 5.9 to 150 -0.28 to 44 -
Iron,dissolved 0.11 to 1.9 -0.17 to 2.5 -
Lead,total 0.05 to 0.14 -<0.05 to 0.1 -
Magnesium -10.5 to 38.1 -23.5
Magnesium,dissolved 17 to 28 -13 to 26 -
<0.00003 to
Mercury,total 0.00006 to 0.002 --
<0.0005
Molybdenum,dissolved 0.002 to 0.10 -0.002 to 0.006 -
Nitrate (as N)0.12tol.77 -<0.05 to 0.05 0.05
SECTOI.RPTlNovember1009
1-29
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
FES FES
Parameter Cottonwood Wash Cottonwood Wash Westwater Creek Westwater Creek
(7/25/77-3/28/78)(9/16/81-6/20/09)(11/10/77-3/23/78)(2/22/82-6/20/09)
Phosphorus,total (as P)0.05 to 3.2 -0.05 to 0.88 -
Potassium -1.77 to 4 --
Potassium,dissolved 1.2 to 6.9 -2.0 to 3.2 4.05
Selenium,dissolved <0.005 to 0.08 -<0.005 to 0.003 -
Silica,dissolved (as Si02)8 to 18 -7 to II -
Strontium,total 0.34 to 0.64 -0.44 to 0.76 -
Uranium,total 0.004 to 0.27 -0.006 to 0.004 -
Dissolved Uranium 0.004 to 0.015 -0.002 to oms -
Zinc,dissolved 0.008 to 0.06 -0.04 to 0.12 -
Total Organic Carbon 7 to 12 -6 to 16 -
Chemical Oxygen Demand 61 to 163 -23 to 66 -
Oil and Grease 2 -I -
Total Suspended Solids 146 to 2,025 oto 24,300 12 to 1940 <4 to 1,190
Total Dissolve Solids 188 to 1,130 274
Determination (/-ICi/ml)
Gross Alpha -<1.0E-9 to 9.0E-7 IE-IO to 4.5E-9 <1.0E-9
Gross Beta --oto 8E-9 -
Dissolved Uraniuml 1.02E-9 to 2.79E-9 2.23E-9 to 6.02E-6 I.03E-9 to 1.35E-9 8.8E-7
Uranium,total-21.83E-7 to 2.79E-9 -2.79E-9 to 4.06E-9 -
Suspended Uranium <2.0E-1O to 2.0E-7 6.09E-7 6.09E-7
Th-230,dissolved -<2.0E-1O to 4.14E-6 oto IE-9 <2.0E-IO
Th-230,suspended <2.0E-10 to <9.0E-7 3.0E-1O
Ra-226 --2E-1O -
Ra-226,disolved <2.0E-1O to 2.0E-9 2.0E-1O
Ra-226,suspended <2.0E-10 to <2.0E-7 <2.0E-1O
Pb-2l0 --7E-1O to I.IE-9 -
Po-210 --oto IE-IO -
Source:FES Table 2.22 and Mill Sample Data
2 Calculated by Denison for activity comparison using the Specific Activity for U-nat (6.77E-7 Ci U-nat/g U-nat)
SECTO1.RPTlNovember 2009
1-30
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
1.5 Groundwater
1.5.1 Groundwater Characteristics
This Section is excerpted from the Report entitled:Site Hydrogeology and Estimation of
Groundwater Travel Times In The Perched Zone White Mesa Uranium Mill Site Near Blanding,
Utah,August 27,2009,prepared by Hydro Geo Chem,Inc.("HGC")(the "2009 HGC Report"),
a copy of which is included as Appendix B.
1.5.1.1 Geologic Setting
The Mill is located within the Blanding Basin of the Colorado Plateau physiographic province.
Typical of large portions of the Colorado Plateau province,the rocks underlying the site are
relatively undeformed.The average elevation of the site is approximately 5,600 ft (1,707 m)
above mean sea level (amsl).
The site is underlain by unconsolidated alluvium and indurated sedimentary rocks consisting
primarily of sandstone and shale.The indurated rocks are relatively flat lying with dips
generally less than 3°.The alluvial materials consist mostly of aeolian silts and fine-grained
aeolian sands with a thickness varying from a few feet to as much as 25 to 30 ft (7.6 to 9.1 m)
across the site.The alluvium is underlain by the Dakota Sandstone and Burro Canyon
Formation,which are sandstones having a total thickness ranging from approximately 100 to 140
ft (31 to 43 m).Beneath the Burro Canyon Formation lies the Morrison Formation,consisting,
in descending order,of the Brushy Basin Member,the Westwater Canyon Member,the
Recapture Member,and the Salt Wash Member.The Brushy Basin and Recapture Members of
the Morrison Formation,classified as shales,are very fine-grained and have a very low
permeability.The Westwater Canyon and Salt Wash Members also have a low average vertical
SECTOI.RPTINovember2009
1-31
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
permeability due to the presence of interbedded shales.See Figure 1.5-1 for a generalized
stratigraphic column for the region.
Beneath the Morrison Formation lies the Summerville Formation,an argillaceous sandstone with
interbedded shales,and the Entrada Sandstone.Beneath the Entrada lies the Navajo Sandstone.
The Navajo and Entrada Sandstones constitute the primary aquifer in the area of the site.The
Entrada and Navajo Sandstones are separated from the Burro Canyon Formation by
approximately 1,000 to 1,100 ft (305 to 335 m)of materials having a low average vertical
permeability.Groundwater within this system is under artesian pressure in the vicinity of the
site,and is used only as a secondary source of water at the site.
1.5.1.2 Hydrogeologic Setting
The site is located within a region that has a dry to arid continental climate,with average annual
precipitation of less than 13.32 in.and an annual lake evaporation rate of approximately 47.6
inches.3 Recharge to aquifers occurs primarily along the mountain fronts (for example,the
Henry,Abajo,and La Sal Mountains),and along the flanks of folds such as Comb Ridge
Monocline.
Although the water quality and productivity of the Navajo/Entrada aquifer are generally good,
the depth of the aquifer (approximately 1,200 ft below land surface (bls))makes access difficult.
The Navajo/Entrada aquifer is capable of yielding significant quantities of water to wells
(hundreds of gallons per minute (gpm)).Water in wells completed across these units at the site
rises approximately 800 ft above the base of the overlying Summerville Formation.
3 The precipitation evapotranspiration rates at the site used in the 2009 HGC Report have been updated in this Plan
to reflect current data.See Section 1.1.1 above.
SECTOl.RPTlNovember 2009
COVERED BY UNCONSOLIDATED ALLUVIUM.
COLLUVIUM AND TALUS7ITEOLIANSAN-O -----------~~~D_~~N~~T,REDDISH BROWN VERY
rr ~~~~~=---==--~ANCOS SHA[E===SHALE.LIGHT GRAY,SOFT
"0 In SANDSTONE.QUARTZ,LIGHT YELLOW BROWN.
to V DAKOTA SANDSTONE POORLY SORTED,IRON CONCREATIONS.2 WELL INDURATED
-f---~~~.:...,.:.~--._---
o(j)
2
BURRO CANYON FORMATION
SANDSTONE.QUARTZ,LIGHT GRAY TO LIGHT
BROWN.CROSS-BEDDED.CONGLOMERATIC,
POORLY SORTED INTERBEDDED WITH
GRAY-GREEN SHALE
Project WHITE MESA MILL
SALT WASH MEMBER
tate:UT
Figure 1.5-1
Generalized Stratigraphy of
White Mesa Mill
SANDSTONE,QUARTZ WHITE TO GRAYISH
BROWN,MASSIVE.CROSS-BEDDED.FINE-
TO MEDIUM-GRAINED
SANDSTONE,QUARTZ.LIGHT YELLOWISH-
BROWN TO LIGHT-GRAY AND WHITE,MASSIVE,
CROSS-BEDDED.FRIABLE.FINE-TO
MEDIUM-GRAINED
SANDSTONE,RED-BROWN.THIN-BEDDED,WITH
RIPPLE MARKS.ARGILLACEOUS WITH SHALE
INTERBEDS
SANDSTONE,QUARTZ.YELLOWISH-TO
REDDISH BROWN,FINE-TO COARSE-
GRAINED INTERBEDDED WITH REDDISH-
GRAY SHALE
SANDSTONE,ARKOSIC.YELLOW TO GREENISH
GRAY.FINE TO COARSE GRAINED.INTERBEDDED
WITH GREENISH-GRAY TO REDDISH-BROWN
SHALE
SHALE.REDDISH-GRAY SILTY TO SANDY
INTERBEDDED WITH SANDSTONE.ARKOSIC•
REDDISH-GRAY,TO YELLOW-BROWN,FINE-
TO MEDIUM-GRAINED
SHALE.GRAY.GRAY-GREEN.AND PURPLE,
SILTY IN PART WITH SOME SANDSTONE
LENSES
oca IOn:
uthor:HRR
zo1=<{
2
0:::oLL
County:
Scale:N/A
Denison Mines (USA)Corp.
REVISIONS
Date By
zo._-..----.._----(f)
0:::0:::o
2
ENTRADA SANDSTONE
SUMMERVILLE FORMATION
NAVAJO SANDSTONE
WESTWATER CANYON MEMBER
RECAPTURE MEMBER
BRUSHY BASIN MEMBER
-f---h"-,,,-~-~~d---..._.---
-L.__L "'"I 6:"../4...•._.
ooN
2
If)
CO
00I")
2
(f)
(f)
W
Z
Y:00to
I 2f-
W
f-<t 0
:2 .q-
-N
X 2
0
0:::
0-
0-0<t If)
I")
2
0
0
-~q
~0::i;j
~1Jl"-
.§ro~iII~?-s:Taken from Stratigraphic Section near Water Well #3
1.5.1.3 Perched Zone Hydrogeology
1-33
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Perched groundwater beneath the site occurs primarily within the Burro Canyon Formation.
Perched groundwater at the site has a generally low quality due to high total dissolved solids
("TDS")in the range of 600 to over 5,000 milligrams per liter (mg/L)(see page 5 of the GWDP
Statement of Basis),and is used primarily for stock watering and irrigation in the areas
upgradient (north)of the site.The saturated thickness of the perched water zone generally
increases to the north of the site,increasing the yield of the perched zone to wells installed north
of the site.Perched water is supported within the Burro Canyon Formation by the underlying,
fine-grained Brushy Basin Member.Figure 1.5-2 is a contour map showing the approximate
elevation of the contact of the Burro Canyon Formation with the Brushy Basin Member,which
essentially forms the base of the perched water zone at the site.Wells and piezometers shown in
Figure 1.5-2 consist of surveyed perched zone monitoring wells and piezometers that include
temporary perched zone monitoring wells (TW-4-series wells)associated with an area of
elevated perched zone chloroform concentrations located east and northeast (cross gradient to
upgradient )of the tailings cells.Contact elevations are based on monitoring well drilling and
geophysical logs and surveyed land surface elevations.As indicated,the contact generally dips
to the south/southwest beneath the site.
The permeability of the Dakota Sandstone and Burro Canyon Formation at the site is generally
low.No significant joints or fractures within the Dakota Sandstone or Burro Canyon Formation
have been documented in any wells or borings installed across the site (Knight Piesold,1998).
Any fractures observed in cores collected from site borings are typically cemented,showing no
open space.
SECTOJ.RPT\November 2009
PROPERTY
BOUNDARY
PtEZ·2
"5536
--
\
\o P1EZ·1~5552
5460_
C\Pt~Z5~58~~
55@--Z:5.-:--=--==-....=-~--=­
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-/
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MW-Ol~536
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9--941'.#II
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EXPLANATION
SCALE IN FEET
o
APPROXIMATE ELEVATION OF
TOP OF BRUSHY BASIN
(Contours Generated by Kriging)
MW·20
.5449
05512
PIEZ-l
liJ 5552
MW-31
-+-5489
-<}6525
pard16d monitoring wall showing
elevation in feet amsl
temporary perched monitoring well
showing elevation in leet amsl
perched piezometer shoWing
elevation In feet amsl
perched monitoring well installed in 2005
showing elevation in feet amsl
lemporary perched monitoring well installed
In 2005 showina elevation in feet amsl
HYDRO
GEO
CHEM,INC.APPROVED
SJS
DATE REFERENCE
H:l718000/hydrplO9/bbeI05rev.srl
FK)URE
1.5-2
1-35
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Based on samples collected during installation of wells MW-16 (no longer used)and MW-17
(the locations of the various monitoring wells are indicated on Figure 1.5-2),located
immediately downgradient of the tailings cells at the site,porosities of the Dakota Sandstone
range from 13.4%to 26%,averaging 20%,and water saturations range from 3.7%to 27.2%,
averaging 13.5%.The average volumetric water content is approximately 3%.The permeability
of the Dakota Sandstone based on packer tests in borings installed at the site ranges from 2.71E-
06 centimeters per second (cmls)to 9.12E-04 cmls,with a geometric average of 3.89E-05 cmls.
The average porosity of the Burro Canyon Formation is similar to that of the Dakota Sandstone.
Based on samples collected from the Burro Canyon Formation at MW-16 (no longer used),
located immediately downgradient of tailings Cell 3,porosity ranges from 2%to 29.1%,
averaging 18.3%,and water saturations of unsaturated materials range from 0.6%to 77.2%,
averaging 23.4%.Titan reported (Titan,1994a)that the hydraulic conductivity of the Burro
Canyon Formation ranges from 1.9E-07 to 1.6E-03 cmls,with a geometric mean of 1.1E-05
cmls,based on the results of 12 pump/recovery tests performed in monitoring wells and 30
packer tests performed in borings prior to 1994.
Hydraulic testing of wells MW-l,MW-3,MW-5,MW-17,MW-18,MW-19, MW-20,and MW-
22 during July,2002,newly installed wells MW-23,MW-25,MW-27,MW-28,MW-29,MW-
30,MW-31,MW-32,TW4-20,TW4-21 and TW4-22 during June,2005,and newly installed
wells TW4-23,TW4-24 and TW4-25 during November,2007 (Figure 1.5-2),yielded average
perched zone permeabilities ranging from approximately 2.0E-07 cmls to 5.0E-04 cmls,similar
to the range reported by previous investigators at the site (HOC,2002,HOC,2005,HOC,2007).
Downgradient (south to southwest)of the tailings cells,average perched zone permeabilities
based on tests at MW-3,MW-5,MW-17,MW-20,MW-22 and MW-25 ranged from
SECTOI.RPTINovember 2009
1-36
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
approximately 4.0E-07 to 1.0E-04 crn/s.Permeability estimates were based on pump/recovery
and slug tests analyzed using several different methodologies.
Twenty five temporary monitoring wells (Figure 1.5-2)have been installed at the site to
investigate elevated concentrations of chloroform initially discovered at well MW-4 in 1999.
Some of the course-grained and conglomeratic zones encountered within the perched zone
during installation of these wells are believed to be partly continuous or at least associated with a
relatively thin,relatively continuous zone of higher permeability (HGC,2001).The higher
permeability zone defined by these wells is generally located east to northeast of the tailings cells
at the site,and is hydraulically cross-gradient to upgradient of the tailings cells with respect to
perched groundwater flow.
Based on analyses of pumping tests at MW-4 and drilling logs from nearby temporary wells,the
permeability of this relatively thin course-grained zone was estimated to be as high as 2.5E-03
crn/s.Relatively high permeabilities measured at MW-11,located on the southeastern margin of
the downgradient edge of tailings Cell 3,and at MW-14,located on the downgradient edge of
tailings Cell 4,of 1.4E-03 crn/s and 7.5E-04 crn/s,respectively (Umetco,1993),may indicate
that this zone extends beneath the southeastern margin of the cells.However,this zone of higher
permeability within the perched water zone does not appear to exist downgradient
(south-southwest)of the tailings cells.At depths beneath the perched water table,the zone is not
evident in lithologic logs of temporary wells TW4-4 and TW4-6 (located east (cross-gradient)of
Cell 3,as shown in Figure 1.5-2),nor is it evident in wells MW-3, MW-5,MW-12,MW-15,
MW-16, MW-17,MW-20, MW-21,or MW-22,located south to southwest (downgradient)of the
tailings cells,based on the lithologic logs or hydraulic testing of the wells.The apparent absence
of this zone south of TW4-4 and south-southwest of the tailings cells indicates that it "pinches
out"(HGC,2005)
SECTOI.RPT\November 2009
1-37
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Because of the generally low permeability of the perched zone beneath the site,well yields are
typically low (less than 0.5 gpm),although yields of as much as 4 gpm are possible in wells
intercepting larger saturated thickness and higher permeability zones on the east side of the site
(for example,at TW4-19,shown on Figure 4).Sufficient productivity can generally be obtained
only in areas where the saturated thickness is greater,which is the primary reason that the
perched zone has been used on a limited basis as a water supply to the north (upgradient)of the
site.
1.5.1.4 Perched Groundwater Flow
Perched groundwater flow at the site is generally to the south/southwest.Figure 1.5-3 displays
the local perched groundwater elevation contours at the Mill.As indicated,the perched
groundwater gradient changes from generally southwesterly in the western portion of the site to
generally southerly in the eastern portion ofthe site.
Perched water discharges in springs and seeps along Westwater Creek Canyon and Cottonwood
Canyon to the west-southwest of the site,and along Corral Canyon to the east of the site,where
the Burro Canyon Formation outcrops.The primary discharge point for perched water flowing
beneath the tailings cells is believed to be Ruin Spring,located approximately 10,000 ft south-
southwest of the Mill site,as shown in Figure 1.5-4.
1.5.1.5 Perched Zone Hydrogeology Beneath And Downgradient Of The Tailings Cells
Perched water,as of the 1st Quarter,2009,was encountered at depths of approximately 52 to 115
ft bls in the vicinity ofthe tailings cells at the site (Figure 1.5-5).Beneath tailings Cell 3,depths
SECTOI.RPTlNovember 2009
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HYDRO
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1-40
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
to water ranged from approximately 70 ft below top of casing (btoc)in the eastern portion of the
cell (at MW-31),to approximately 114 ft btoc at the southwest margin of the cell (at MW-23).
Assuming an average depth of the base of tailings Cell 3 of 25 ft below grade,this corresponds
to perched water depths of approximately 45 to 89 ft below the base of the cell,or an average
depth of approximately 67 feet beneath the base of the cell.
The saturated thickness of the perched zone as of the 1st Quarter,2009 ranged from
approximately 93 ft in the northeast portion of the site to approximately 6 ft in the southwest
portion of the site (Figure 1.5-6).Beneath tailings Cell 3,the saturated thickness varies from
approximately 57 ft in the eastern portion of the cell to approximately 7 ft in the western portion
of the cell.South-southwest of the tailings cells,the saturated thickness ranges from less than 1
ft at MW-21 to approximately 28 ft at MW-17.The average saturated thickness south-southwest
of the tailings cells,based on measurements at MW-3,MW-5,MW-12, MW-14,MW-15,MW-
17,MW-20 and MW-23,is approximately 14 ft.The average saturated thickness based on
measurements at MW-5,MW-15,MW-3,and MW-20,which lay close to a line between the
center of tailings Cell 3 and Ruin Spring,is approximately 12 ft.By projecting conditions at
these wells,the average saturated thickness is estimated to be approximately 10 to 15 ft between
MW-20 and Ruin Spring.
Perched zone hydraulic gradients currently range from a maximum of approximately 0.05 feet
per foot (ftlft)east of Cell 2 to approximately 0.01 ft/ft downgradient of Cell 3,between Cell 3
and MW-20.The average hydraulic gradient between the downgradient edge of tailings Cell 3
and Ruin Spring was approximated by HGC to be approximately 0.012 ft/ft.HGC also
estimated a hypothetical worst case average perched zone hydraulic gradient,assuming the
SECTOI.RPTlNovember2009
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1-43
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
perched water elevation to be coincident with the base of tailings Cell 3,to be approximately
0.019 ftlft.See Section 3.2 of the 2009 HGC Report.
HGC also estimated the average permeability of the perched zone downgradient of tailings Cell
3,based on pump/recovery test and slug test data obtained from perched zone wells located
along the downgradient edge of and south of Cell 3,to be between 2.3E-05 crn/s and 4.3E-05
crn/s.See Section 3.3 of the 2009 HGC Report.
1.5.2
1.5.2.1
Groundwater Quality
Entrada/Navajo Aquifer
The Entrada and Navajo Sandstones are prolific aquifers beneath and in the vicinity of the site.
Water wells at the site are screened in both of these units,and therefore,for the purposes of this
discussion,they will be treated as a single aquifer.Water in the Entrada/Navajo Aquifer is under
artesian pressure,rising 800 to 900 ft above the top of the Entrada's contact with the overlying
Summervillle Formation;static water levels are 390 to 500 ft below ground surface.
Within the region,this aquifer is capable of yielding domestic quality water at rates of 150 to 225
gpm,and for that reason,it serves as a secondary source of water for the Mill.Additionally,two
domestic water supply wells drawing from the Entrada/Navajo Aquifer are located 4.5 miles
southeast of the Mill site on the Ute Mountain Ute Reservation.Although the water quality and
productivity of the Navajo/Entrada aquifer are generally good,the depth of the aquifer (>1,000 ft
bls)makes access difficult.
Table 1.5-1 is a tabulation of groundwater quality of the Navajo Sandstone aquifer as reported in
SECTO1.RPTINovember 2009
1-44
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
the FES and subsequent sampling.TDS ranges from 244 to 1,110 mg/liter in three samples
taken over a period from January 27,1977,to May 4,1977.High iron (0.057 mg/liter)
concentrations are found in the Navajo Sandstone.Because the Navajo Sandstone aquifer is
isolated from the perched groundwater zone by approximately 1,000 to 1,100 ft of materials
having a low average vertical permeability,sampling of the Navajo Sandstone is not required
under the Mill's previous NRC Point of Compliance monitoring program or under the GWDP.
However,samples were taken at two other deep aquifer wells (#2 and #5)on site (See Figure
1.5-7 for the locations of these wells),on June 1,1999 and June 8,1999,respectively,and the
results are included in Table 1.5-1.
SECTOI.RPT"'1ovcmber 2009
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WHITE MESA MILL
Figure 1.5-7
Groundwater (Well or Spring)Sampling
Stations in the White Mesa Vicinity
Location:
County:
B'Date
Project
PROPERTY BOUNDARY
RESERVATION BOUNDARY
•••_•••CANYON RIM5'"WATER SUPPLY WELL
A G4R GROUNDWATER (WELL OR SPRING)
SAMPLING LOCATION
1-46
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Table 1.5-1
Water Quality of the Navajo Sandstone Aquifer in the Mill Vicinity
FES,Test Well
Well #2 Well #5
Parameter (G2R)
6/01/991 6/08/991
(1127/77.3/23/781)
Field Specific Conductivity
310 to 400
(umhos/cm)
Field pH 6.9 to 7.6
Temperature (OC)lito 22
Estimated Flow m/hr (gpm)109(20)
pH 7.9 to 8.16
Determination,mglliter
TDS (@180°C)216 to 1110
Redox Potential 211 to 220
Alkalinity (as CaCOS3)180 to 224
Hardness,total (as CaC03)177 to 208
Bicarbonate 226 214
Carbonate (as C03)0.0 <1.0 <1.0
Aluminum 0.003 0.058
Aluminum,dissolved <0.1
Ammonia (as N)0.0 to 0.16 <0.05 <0.05
Antimony <0.001 <0.001
Arsenic,total .007 to 0.014 0.018 <0.001
Barium,total 0.0 to 0.15 0.119 0.005
Beryllium <0.001 <0.001
Boron,total <0.1 to 0.11
I Zero values (0.0)are below detection limits.
SECTO1.RPnNovember2009
1-47
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
FRS,Test Well
Well #2 Well #5
Parameter (G2R)
6/01/99'6/08/99'
(1/27177 -3/231781)
Cadmium,total <0.005 to 0.0 <0.001 0.018
Calcium 50.6 39.8
Calcium,dissolved 5I to 112
Chloride 0.0 to 50 <1.0 2.3
Sodium 7.3 9.8
Sodium,dissolved 5.3 to 23
Silver <0.001 <0.001
Silver,dissolved <0.002 to 0.0
Sulfate 28.8 23.6
Sulfate,dissolved (as S04)17 to 83
Vanadium 0.003 0.003
Vanadium,dissolved <.002 to 0.16
Manganese 0.01 I 0.032
Manganese,dissolved 0.03 to 0.020
Chromium,total 0.02 to 0.0 0.005 0.005
Copper,total 0.005 to 0.0 0.002 0.086
Fluoride 0.18 0.18
Fluoride,dissolved O.I to 0.22
Iron,total 0.35 to 2.I 0.43 0.20
Iron,dissolved 0.30 to 2.3
Lead,total 0.02 -0.0 <0.001 0.018
Magnesium 20.4 21.3
Magnesium,dissolved 15 to 21
Mercury,total <.00002 to 0.0 <0.001 <0.001
Molybdenum 0.001 <0.001
Molybdenum,dissolved 0.004 to 0.010
Nickel <0.001 0.004
Nitrate +Nitrate as N <0.10 <0.10
SECTOI.RPT\November 2009
1-48
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
FES,Test Well
Well #2 Well #5
Parameter (G2R)
6/01/991 6/08/991
(1127/77.3/23/781)
Nitrate (as N)<.05 to 0.12
Phosphorus,total (as P)<0.0 I to 0.03
Potassium 3.1 3.3
Potassium,dissolved 2.4 to 3.2
Selenium <0.001 <0.001
Selenium,dissolved <.005 to 0.0
Silica,dissolved (as Si02)5.8 to 12
Strontium,total (as U)0.5 to 0.67
Thallium <0.001 <0.001
Uranium,total (as U)<.002 to 0.16 0.0007 0.0042
Uranium,dissolved (as U)<.002 to 0.031
Zinc 0.010 0.126
Zinc,dissolved 0.007 to 0.39
Total Organic Carbon 1.1 to 16
Chemical Oxygen Demand <I to 66
Oil and Grease 1
Total Suspended Solids 6 to 1940 <1.0 10.4
Turbidity 5.56 19.1
Determination (pCi/liter)
Gross Alpha <1.0
Gross Alpha ±precision 1.6±1.3 to 1O.2±2.6
Gross Beta <2.0
Gross Beta ±precision 8±8 to 73±19
Radium 226 ±precision 0.3±0.2
Radium 228 <1.0
Ra-226 ±precision 0.1±.3 to 0.6±0.4
Th-230 ±precision 0.1±0.4 to 0.7±2.7
Pb-210 ±precision 0.0±4.0 to 1.0±2.0
SECTOJ.RPT\November 2009
1-49
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
FRS,Test Well
Well #2 Well #5
Parameter (G2R)
6/011991 6/08/991
(1127/77.3/23/78')
Po-210 ±precision O.O±O.3 to O.O±O.8
Source:Adapted from FES Table 2.25 with additional Mill sampling data
1.5.2.2 Perched Groundwater Zone
Perched groundwater in the Dakota/Burro Canyon Formation is used on a limited basis to the
north (upgradient)of the site because it is more easily accessible.The quality of the Burro
Canyon perched water beneath and downgradient from the site is poor and extremely variable.
The concentrations of TDS measured in water sampled from upgradient and downgradient wells
range between approximately 600 and 5,300 mg/1.Sulfate concentrations measured in three
upgradient wells varied between 670 and 1,740 mg/l (Titan,1994a).The perched groundwater
therefore is used primarily for stock watering and irrigation.The saturated thickness of the
perched water zone generally increases to the north of the site.See Section 1.5.3 below for a
more detailed discussion of background ground water quality in the perched aquifer.
1.5.3 Background Ground Water Quality in the Perched Aquifer
A significant amount of historic groundwater quality data had been collected by Denison and
previous operators of the Mill for many wells at the facility.
However,at the time of original issuance of the GWDP,the Executive Secretary had not yet
completed an evaluation of the historic data,particularly with regard to data quality,and quality
assurance issues.The Executive Secretary also noted several groundwater quality issues that
needed to be resolved prior to a determination of background groundwater quality at the site,
such as a number of constituents that exceeded their respective Ground Water Quality Standard
SECTOI.RPTlNovember 2009
1-50
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
("GWQS")and long term trends in uranium in downgradient wells MW-14,MW-15 and MW-
17,and a spatial high ofuranium in those three downgradient wells.
As a result of the foregoing,the Executive Secretary required in Part I.H.3 of the GWDP that the
Existing Well Background Report be prepared to address and resolve these issues.Pending
approval of the Existing Well Background Report,Ground Water Compliance Levels
("GWCLs")were set in Table 2 of the GWDP as 0.25 and 0.5 time the GWQS for Class II and
III groundwater respectively.
Denison has submitted the Existing Well Background Report to the Executive Secretary.The
Executive Secretary is currently reviewing the Background Reports and considering appropriate
GWCLs that reflect the natural background conditions at the site.The Background Reports were
prepared by INTERA,Inc.("INTERN').
As required by the GWDP,the Existing Well Background Report addresses all available historic
data,which includes pre-operational and operational data,for the compliance monitoring wells
under the GWDP that were in existence at the date of issuance of the GWDP.The Regional
Background Report focuses on all pre-operational site data and all available regional data to
develop the best available set of background data that could not conceivably have been
influenced by Mill operations.The New Well Background Report,which is required by Part
I.H.4 of the GWDP,analyzes the data collected from the new wells (MW-3A,MW-23,MW-24,
MW-25,MW-27,MW-28,MW-29.MW-30 and MW-31),which were installed in 2005,to
determine background concentrations for constituents listed in the GWDP for each new well.
The purpose of the Existing Well Background Report and the New Well Background Report was
to satisfy several objectives:first,in the case of the Existing Well Background Report,to
perform a quality assurance evaluation and data validation of the existing and historical on-site
SECTOI.RPTINovember 2009
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Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
groundwater quality data in accordance with the requirements of Part LH.3 of the GWDP,and to
develop a database consisting ofhistorical groundwater monitoring data for "existing"wells and
constituents.
Second,in the case of the New Well Background Report,to compile a database consisting of
monitoring results for new wells,which were collected subsequent to issuance of the GWDP,in
accordance with the Mill's Groundwater Quality Assurance Plan ("QAP")data quality
objectives.
Third,to perform a statistical,temporal and spatial evaluation of the existing well and new well
data bases to determine if there have been any impacts to groundwater from Mill activities.
Since the Mill is an existing facility that has been in operation since 1980,such an analysis of
historic groundwater monitoring data was required in order to ensure that the monitoring results
to be used to determine background groundwater quality at the site and GWCLs have not been
impacted by Mill activities.
Finally,in the event the analysis demonstrates that groundwater has not been impacted by Mill
activities,to develop a GWCL for each constituent in each well.
The Regional Background Report was prepared as a supplement to the Existing Well
Background Report to provide further support to the conclusion that Mill activities have not
impacted groundwater.
In evaluating the historic data for the existing wells,INTERA used the following approach:
•If historic data for a constituent in a well do not demonstrate a statistically significant
upward trend,then the proposed GWCL for that constituent is accepted as representative
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of background,regardless of whether or not the proposed GWCL exceeds the GWQS for
that constituent.This is because the monitoring results for the constituent can be
considered to have been consistently representative since commencement of Mill
activities or installation of the well;and
•If historic data for a constituent in a monitoring well represent a statistically significant
upward trend or downward trend in the case of pH,then the data is further evaluated to
determine whether the trend is the result of natural causes or Mill activities.If it is
concluded that the trend results from natural causes,then the GWCL proposed in the
Existing Well Background Report will be appropriate.
After applying the foregoing approach,INTERA concluded that,other than some detected
chloroform and related organic contamination at the Mill site,which is the subject of a separate
investigation and remedial action,and that is the result of pre-Mill activities,there have been no
impacts to groundwater from Mill activities.
In reaching this conclusion,INTERA noted that,even though there are a number of increasing
trends in various constituents at the site,none of the trends are caused by Mill activities,for the
following reasons:
•Chloride is unquestionably the best indicator parameter,and there are no significant
trends in chloride in any of the wells;
•There are no noteworthy correlations between chloride and uramum in wells with
increasing trends in uranium,other than in upgradient wells MW-19 and MW-18,which
INTERA concluded are not related to any potential tailings seepage.INTERA noted that
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it is inconceivable to have an increasing trend in any other parameter caused by seepage
from the Mill tailings without a corresponding increase in chloride;
•There are significant increasing trends upgradient in MW-l,MW-18 or MW-19 in
uranium,sulfate,TDS,iron,selenium,thallium,ammonia and fluoride and far
downgradient in MW-3 in uranium and selenium,sulfate,TDS and pH (decreasing
trend).INTERA concluded that this provides very strong evidence that natural forces at
the site are causing increasing trends in these constituents (decreasing in pH)in other
wells and supports the conclusion that natural forces are also causing increasing trends in
other constituents as well;and
•On a reVIew of the spatial distribution of constituents,it is quite apparent that the
constituents of concern are dispersed across the site and not located in any systematic
manner that would suggest a tailings plume.
INTERA concluded that,after extensive analysis of the data,and given the conclusion that there
have been no impacts to groundwater from Mill activities,the proposed GWCLs set out in Table
16 of the Existing Well Background Report are appropriate,and are indicative of background
ground water quality.INTERA did advise,however,that proposed GWCLs for all the trending
constituents should be re-evaluated upon GWDP renewal to determine if they are still
appropriate at the time of renewal.
In evaluating the new well data,INTERA used the same approach in the New Well Background
Report that was used in the Existing Background Report for existing well data.In addition,
INTERA compared the groundwater monitoring results for the new wells to the results for the
existing wells analyzed in the Existing Well Background Report and to the pre-operational and
regional results analyzed in the Regional Background Report.This was particularly important
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for the new wells because there is no historic data for any constituents in those wells that goes
back to commencement of Mill operations.A long-term trend in a constituent may not be
evident from the available data for the new wells.By comparing the means for the constituents
in the new wells to the results for the existing wells and regional background data,INTERA was
able to determine if the concentrations of any constituents in the new wells are consistent with
background at the site.
INTERA concluded that after applying the foregoing approach,there have been no impacts to
groundwater in the new monitoring wells from Mill activities.INTERA concluded that the
groundwater monitoring results for the new wells are consistent with the results for the existing
wells analyzed in the Existing Well Background Report and for the pre-operational and regional
wells,seeps and springs analyzed in the Regional Background Report.INTERA noted that there
were some detections of chloroform and related organic contamination and degradation products
and nitrate and nitrite in the new wells,which are the subject of a separate investigation,but that
such contamination was the result of pre-Mill activities.
As a result,given its conclusion that there have been no impacts to groundwater from Mill
activities,INTERA concluded that the proposed GWCLs for new wells set out in Table 10 of the
New Well Background Report are appropriate,and are indicative of background ground water
quality.Again,INTERA noted that GWCLs for trending constituents should be re-evaluated
upon GWDP renewal to determine if they are still appropriate at the time of renewal.
During the course of discussions with Denison staff,and further DRC review,DRC decided to
supplement the analysis provided in the Background Reports by commissioning the University of
Utah to perform a geochemical and isotopic groundwater study at the Mill.This resulted in the
University of Utah completing a study entitled Summary of work completed,data results,
interpretations and recommendations for the July 2007 Sampling Event at the Denison Mines,
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USA,White Mesa Uranium Mill Near Blanding Utah,May 2008,prepared by T.Grant Hurst and
D.Kip Solomon,Department of Geophysics,University of Utah (the "University of Utah
Study").The purpose of the University of Utah Study was to verify if the increasing and
elevated trace metal concentrations (such as uranium)found in the monitoring wells at the Mill
were due to potential leakage from the on-site tailings cells.To investigate this potential
problem,the study examined groundwater flow,chemical composition,noble gas and isotopic
composition,and age of the on-site groundwater.Similar evaluations were also made on
samples of the tailings wastewater and nearby surface water stored in the northern wildlife ponds
at the facility.Fieldwork for the University of Utah Study was conducted July 17 -26 of 2007.
The conclusions in the University of Utah Study supported Denison's conclusions in the
Background Reports
1.5.4 Quality of Ground Water at the Compliance Monitoring Point
All of the analytical results from groundwater sampling are reported quarterly in Groundwater
Monitoring Reports,which are filed with the Executive Secretary pursuant to Part I.F.l of the
GWDP.
1.5.5 Springs and Seeps
As discussed in Section 1.5.1.4,perched groundwater at the Mill site discharges in springs and
seeps along Westwater Creek Canyon and Cottonwood Canyon to the west-southwest of the site,
and along Corral Canyon to the east of the site,where the Burro Canyon Formation outcrops.
Water samples have been collected and analyzed from springs and seeps in the Mill vicinity as
part of the baseline field investigations reported in the 1978 ER (See Table 2.6-6 in the 1978
ER).
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During the period 2003-2004,Denison implemented a sampling program for seeps and springs in
the vicinity of the Mill which had been sampled in 1978,prior to the Mill's construction.Four
locations were designated for sampling,which are shown on Figure 1.5-7,above.These are
Ruin Spring (G3R),Cottonwood Seep (G4R),west of Westwater Creek (G5R)and Corral
Canyon (GlR).During the 2-year study period only two of the four locations were able to be
sampled,Ruin Spring and Cottonwood Canyon.The other two locations,Corral Creek and the
location west of Westwater Creek were not flowing (seeping)and samples could not be
collected.With regard to the Cottonwood seep,while water was present,the volume was not
sufficient to complete all determinations,and only organic analyses were conducted.The results
of the organic analysis did not detect any detectable organics.
Samples at Ruin Spring were analyzed for major ions,physical properties,metals,radionuclides,
volatile and semi-volatile organic compounds,herbicides and pesticides,and synthetic organic
compounds.With the exception of one chloromethane detection,all organic determinations were
at less than detectable concentrations.The detection of chloromethane is not uncommon in
groundwater and can be due to natural sources.In fact,chloromethane has been observed by
Denison at detectable concentrations in field blank samples during routine groundwater sampling
events.
The results of the 200312004 sampling for the other parameters tested are shown in Table 1.5-2.
The results of the sampling did not indicate the presence of Mill derived groundwater
constituents and are representative ofbackground conditions.
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Table 1.5-2
Results of Quarterly Sampling
Ruin Spring (2003-2004)
Ruin Spring
Parameter
QI-03 Q2-03 Q3-03 Q4-3 QI-04 Q2-04 Q3-04 Q4-04
Major Ions (mg/L)
Alkalinity --196 198 193 191 195 183
Carbon Dioxide --ND ND ND ND 12 ND
Carbonate --ND ND ND ND ND ND
Bicarbonate --239 241 235 232 238 223
Hydroxide -ND ND ND ND ND ND
Calcium 153 156 149 158 158 162 176 186
Chloride 28.1 21.5 27.4 28.0 29.3 28.5 26 25
Fluoride --ND 0.5 0.5 0.6 0.6 0.6
Magnesium 34.8 34.2 31.7 34.2 35.8 35.1 37.1 38.6
Nitrogen,Ammonia As N ND ND ND ND ND 0.06 ND 0.06
Nitrogen,Nitrate+Nitrite as N 1.6 1.5 1.4 1.4 1.73 1.85 1.34 1.7
Phosphorous 0.10 ND -ND ND ND ND ND
Potassium 2.6 3.3 3.3 3.9 3.4 3.6 4.0 3.7
Sodium 110 105 103 113 104 110 113 116
Sulfate 503 501 495 506 539 468 544 613
Physical Properties
Conductivity (umhos/cm)--1440 1410 1390 1440 1320 1570
pH --7.91 7.98 ---
TDS (mglL)--1040 1000 1050 1110 1050 1070
TSS (mg/L)- -13.5 ND ND ND ND ND
Turbidity (NTU)- -0.16 0.13 ND 0.12 --
Metals-Dissolved (mglL)
Aluminum ND ND 0.40 ND ND ND ND ND
Antimony ND ND ND ND ND ND ND ND
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Parameter
Ruin Spring
Ql·03 Q2·03 Q3·03 Q4.3 Ql·04 Q2·04 Q3-04 Q4-04
Major Ions (mg/L)
Arsenic 0.001 ND ND 0.001 ND ND ND ND
Barium ND ND ND ND ND ND ND ND
Beryllium ND ND ND ND ND ND ND ND
Cadmium ND ND ND ND ND ND ND ND
Chromium ND ND ND ND ND ND ND ND
Copper ND ND 0.082 ND ND ND ND ND
Iron ND ND ND ND ND ND ND ND
Lead ND ND ND ND ND ND ND ND
Manganese ND ND ND ND ND ND ND ND
Mercury ND ND ND ND ND ND ND ND
Molybdenum ND ND ND ND ND ND ND ND
Nickel ND ND ND ND ND ND ND ND
Selenium 0.013 0.012 0.012 0.012 0.012 0.012 0.012 0.012
Silver ND ND ND ND ND ND ND ND
Thallium ND ND ND ND ND ND ND ND
Uranium 0.009 0.011 0.010 0.010 0.011 0.011 0.009 0.010
Vanadium ND ND ND ND ND ND ND ND
Zinc 0.014 ND ND ND ND ND ND ND
RadionucUdes (pCilL)
Gross Alpha Minus Rn &U - ---ND ND 1.4 ND
Lead 210 42 ND ND ND ND ND ND ND
Radium 226 0.3 ND 0.3 ND ND ND 1.3 ND
Thorium 230 0.3 0.2 0.5 ND ND ND 0.4 ND
Thorium 232 - -ND ND ND ND ND -
Thorium 228 - -ND ND ND ND - -
Source:Table 3.7-9 of 2007 ER.
During 2009,the Mill adopted a Sampling Plan for Seeps and Springs in the Vicinity ofthe White
Mesa Uranium Mill,Revision:0,March 17,2009.That Plan requires sampling once per year at
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the four seeps and springs described above,plus a fifth seep,Corrals Seep,to the extent water
flow is sufficient for sampling.Samples were collected in July 2009 under the Plan at Ruin
Spring,Cottonwood Spring and Entrance Spring (located just across Highway 191 from the Mill
entrance)the only springs and seeps that had sufficient water flow for sampling.The results of
the July 2009 sampling are shown in Table 1.5-3.
Table 1.5-3
Seeps and Springs Sampling (July 2009)
Constituent Ruin Spring Ruin Spring Cottonwood Entrance
Duplicate Spring Spring
Major Ions (m~/L)
Carbonate ND ND ND ND
Bicarbonate 233 232 316 282
Calcium 151 149 90.3 90.8
Chloride 28 27 124 60
Fluoride 0.5 0.5 0.4 0.7
Magnesium 32.3 31.6 25.0 26.6
Nitrogen,Ammonia As N 0.09 ND ND 0.28
Nitrogen,Nitrate+Nitrite as N 1.4 1.4 0.1 1.4
Potassium 3.3 3.2 5.7 2.4
Sodium 104 103 205 61.4
Sulfate 528 520 383 178
Physical Properties
Ph 7.85 7.7 7.73 7.85
TDS (mglL)1010 996 1010 605
Metals-Dissolved (uglL)
Arsenic ND ND ND ND
Beryllium ND ND ND ND
Cadmium ND ND ND ND
Chromium ND ND ND ND
Cobalt ND ND ND ND
Copper ND ND ND ND
Iron ND ND ND ND
Lead ND ND ND ND
Manganese ND ND ND ND
Mercury ND ND ND ND
Molybdenum 17 17 ND ND
Nickel ND ND ND ND
Selenium 12.2 12.3 ND ND
Silver ND ND ND ND
Thallium ND ND ND ND
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Constituent Ruin Spring Ruin Spring Cottonwood Entrance
Duplicate Spring Spring
Major Ions (mg/L)
Tin ND ND ND ND
Uranium 9.11 9.00 8.42 ND
Vanadium ND ND ND ND
Zinc ND ND ND ND
Radionuclides (pCiIL)
Gross Alpha Minus Rn &U 0.2 -0.02 0.3 0.9
Volatile Organic Compounds (ugll)
Acetone ND ND ND ND
Benzene ND ND ND ND
Carbon tetrachloride ND ND ND ND
Chloroform ND ND ND ND
Chloromethane ND ND ND ND
MEK ND ND ND ND
Methylene Chloride ND ND ND ND
Naphthalene ND ND ND ND
Tetrahydrofuran ND ND ND ND
Toluene ND ND ND ND
Xylenes ND ND ND ND
1.5.6 Groundwater Appropriations Within a Five Mile Radius
Two hundred sixty one groundwater appropriation applications,within a five-mile radius of the
Mill site,are on file with the Utah State Engineer's office.A summary of the applications is
presented in Table 1.5-4 and shown on Figure 1.5-8.The majority of the applications are by
private individuals and for wells drawing small,intermittent quantities of water,less than eight
gpm,from the Burro Canyon formation.For the most part,these wells are located upgradient
(north)of the Mill site.Domestic water,stock watering,and irrigation are listed as primary uses
of the majority of the wells.It is important to note that no wells completed in the perched
groundwater of the Burro Canyon formation exist directly downgradient of the site within the
five-mile radius.Two water wells,which available data indicate are completed in the
Entrada/Navajo sandstone (Clow,1997),exist approximately 4.5 miles southeast of the site on
the Ute Mountain Ute Reservation.These wells supply domestic water for the Ute Mountain Ute
White Mesa Community,situated on the mesa along Highway 191 (see Figure 1.5-8).Data
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supplied by the Tribal Environmental Programs Office indicate that both wells are completed in
the Entrada/Navajo sandstone,which is approximately 1,200 feet below the ground surface.
Insufficient data are available to define the groundwater flow direction in the Entrada/Navajo
sandstone in the vicinity of the Mill.
The well yield from wells completed in the Burro Canyon formation within the White Mesa site
is generally lower than that obtained from wells in this formation upgradient of the site.For the
most part, the documented pumping rates from on-site wells completed in the Burro Canyon
formation are less than 0.7 cfs.Even at this low rate,the on-site wells completed in the Burro
Canyon formation are typically pumped dry within a couple of hours.
This low productivity suggests that the Mill is located over a peripheral fringe of perched water;
with saturated thickness in the perched zone discontinuous and generally decreasing beneath the
SECTOJ,RPTINovember 2009
p
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FIGURE 1.5-8
GROUNDWATER APPROPRIATIONS WITHIN A
5-MILE RADIUS OF THE WHITE MESA MILL
Location:
Project:
Author:unknown
Bv I County:
Denison Mines (USA)Corp.IOENISONI)JJ
MINES
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Table 1.5 - 4
Water Rights
~Diversion
I 'i:~l IIstatusll Priority II Uses II CFS II ACFT II ownerName~Number Type/Location
109-1006 IIUnderground II Ilu 11197711101~lo.500110.000 IIDOROTHY PERKINS I
D S30 W20 E4 02 37S
DDDDDD
NORTH RESERVOIR
22ESL ROAD (37-1)
109-1008 IIUnderground IL~IT 11197711101~[0.500110.000 IIARDEN NIELSON I
D S460 El17 W4 01
DDDDDDlp.o.BOX #378 I37S22ESL
1°9-1009 Ilunderground IDOI197711101010.500110.000 1
BAR M.K.RANCHES
INCORPORATED
D N1200 E990 W4 14
DDDDDDlp·O.BOX576 137S22ESL
1°9-1009 lIunderground IDOI1977111010Io.500110.000 1
BAR M.K.RANCHES
INCORPORATED
D °W990 N4 14 37S
DDDDDDlp·o.BOX576 I22ESL
1°9-1009 lIunderground IDOI1977111010Io.500110.000 I
BAR M.K.RANCHES
INCORPORATED
D N990 W990 S4 11
DDDDDDlp·o.BOX576 I37S22ESL
01underground 1well DI1945070211DIS 11°.00411°.000 IIILO M.BROWN Iinfo
D N1275 E2708 SW 01
DDDDDDIBLANDINGUT 84535137S22ESL
109-1013 IIUnderground II lip 11197712071[QI]IO.0l51!0.000 IILEWIS A.BLACK I
D N2510 E75 S4 34
DDDDDDlp.o.BOX #403 136S22ESL
1°9-1016 Ilunderground IDD119780103IIDIS 11°.5°°11°.000 IKENNETHP.
MCDONALD
D N559 °S4 34 36S
DDDDDD
60 NORTH 100 WEST
22ESL (16-5)
109-101 7 Ilunderground II lip 11197801051[QI]lo.0l51Io.000 IIJOHN BRAKE I
D N150 E137 S4 34
DDDDDDlp.o.BOX #173 I36S22ESL
1°9-1018 lIunderground IDDI1978010411DIS 11°.01511°.000 1
MARGARETE.
THOMPSON
D S2620 W840 NE 36
DDDDDDlp.O.BOX #231 ]36S 22E SL
109-1023 IIUnderground II 1~~1197801261IDIS 111.000110.000 I!CALVIN BLACK
D SlO W4000 NE 16
DDDDDDlp.o.BOX #88537S22ESL
109-1023 IIUnderground II liT 11197801261IDIS]I.000110.000 IlcALVIN BLACK
D S600 W1320 NE 16
DDDDDDlp.o.BOX #88537S22ESL
~IUnderground ]well
011945071OIDI0.003llo.000 II~~~~:~M.~info
D S1394 E2295 NW 02
DDDDDDIBLANDING UT 84535137S22ESL
109-1031 lIunderground Iwell 01198304251010.136110.000 1COLLEGE OF
info EASTERN UTAH
D a E1000 SW 23 38S
DDDDDDI451 EAST 400 NORTHI21ESL
109-1032 IIUnderground II liT 111978030911DIS 110.015110.000 IIBLANDING CITD
D S840 W875 NE 15
DDDDDDIBLANDINGUT 84511137S22ESL
109-1033 Ilunderground II:~~1011978030911DIS 110.015110.000 1
BARRY LEE AND
LOREE A.WOOLLEY
D N1050 W1195 SE 10
DDDDDD
191 BUTTERNUT
37S 22E SL DRIVE NORTH
109-1042 Ilunderground II:~~ID1197805051EJ10.0151BIAROE G.BROWN 1
D N1580 W1090 SE 01
DDDDDDEANDING UT84511 137S22ESL
109-1043 IIUnderground II liT l[97sQ505][QIJ10.0151Io.000 IIARVID K.BLACK I
D S1000 E300 NW 01
DDDDDDIBOX339 137S22ESL
109-1044 IIUnderground II lip 11197804291[QIJ10.0151Io.000 IlpETE M.BLACK I
D S150 E1840 W4 36
DDDDDDIBOX386 136S22ESL
109-1045 Ilunderground II:~~1011978050411DIS 110.015110.000 IIKENNETH BROWN
D N1580 W1040 SE 01
DDDDDDlp.o.BOX #63737S22ESL
109-1047 Ilunderground Iwell 011978051111DIS 110.0151EJIIVAN Q.JONESinfo
I IINI05 WIIlO E4 02 II II II 1001 11881 EAST BROWNS
I 1137s 22E SL JI II IC~OOI IICANYON ROAD I
109-1048 IIUnderground Iwell D119780511IID1S 110.015110.000 IIDORIS GUYMON Iinfo
D N105 WlllO E4 02
DDDDDDlp.o.BOX#117 I37S22ESL
109-1057 lIunderground Iwell DI1978062311DIS 110.015110.000 I
EUGENE &
info DORTHEA GUYMON
D S100 W1400 NE 02
DDDDDDIBOX117 I37S22ESL
109-1058 I [][]1:8~+J['t:~EUGENE &
Underground DOROTHEA
GUYMON
D N400 W400 E4 02
DDDDDDIBOX117 137S22ESL
!09-1059 I
well D11978062311DlS 11010+000 !
EUGENE &
Underground info DOROTHEA
GUYMON
D S100 W1400 NE 02
DDDDDDIBOX117 I37S22ESL
109-1063 lIunderground IDDI1978080211DO 110.015110.000 II~tN~TRUCTION I
D N900 W660 SE 34
DDDDDDlp·o.BOX415 I36S22ESL
109-1071 IIUnderground II liT 11197808241010.015110.000 IIJAMES J.HARRIS I
D S600 W1280 E4 36
DDDDDDIBOX392 I36S22ESL
109-1090 Ilunderground II:~~IDI19790521IEJlo.0151Io·000 I
GUY DENTON AND
PEGGY DENTON
D N1090 W20 S4 02
DDDDDD
632 EAST BROWNS
37S 22E SL CANYON ROAD
~IUndergrOUnd II:~~IDI1946041511DIS 110.100110.000 IIHENRY M.LYMAN I
D N1305 W1023 E403
DDDDDDIBLANDING UT 84511137S22ESL
109-1100 IIUnderground II IIA 11197909041[QO!0.015!10.000 IILOYD ROPER I
D N1430 E275 S4 34
DDDDDDlp·O.BOX469 I36S22ESL
109-1110 Ilunderground Iwell DI19830304IEJI0.0151Io·000 I
RICHARDW.&
info ARLEEN HURST
I IINl170 W1000 SE 0111 II II 1001 IIp.O.BOX 1090 I
I 1137s 22E SL II II II 1001 Ie I
109-1124 IIUnderground II 1rr-~[l98608181~10.0151Io.000 I!JOHN BRAKE I
D N310 E280 S4 34 [][JL~[J[JL]1300 S 300 W.(60-9)I36S22ESL
~9-1128 Irtfuderground ~I 1[~1198003101IDIS 110.015110.000 IIJAMES A.LAWS I
D S1610 E560 N4 02
DDDDDDlp.o.BOX 1210 I37S22ESL
109-1144 Ilunderground IDDI198006301lDIS 110.0151[000 ILEER.&
MARYLYNN SMITH
D N1272 E149 S4 34
DDDDDDlp.o.BOX 1169 136S22ESL
109-1145 lIunderground IDDI198006301lDIS 110.015110.000 1
LEER.&
MARYLYNN SMITH
D N1272 E149 S4 34
DDDDDDlp.o.BOX 1169 136S22ESL
109-1146 Jlunderground IDDI198006301lDIS 110.015110.000 1
LEER.&
MARYLYNN SMITH
D N1272 E149 S4 34
DDDDDDlp.o.BOX 1169 I36S22ESL
109-1147 lIunderground IDDI198006301lDIS 110.015110.000 1
LEER.&
MARYLYNN SMITH
D N1272 E149 S4 34
DDDDDDlp.o.BOX 1169 136S22ESL
109-1153 lIunderground IDDI19800825IEJI0.0151Io·000 1
PARLEYV.&REVA
V.REDD
D DDO[J[JO PARLEY AND REVA
N1350 El150 SW 34 REDDFAMILY
36S 22E SL LIVING TRUST
(1981)
109-1156 I :~~:D11980090911DIS 110.01+000 I
AL B.CLARKE AND
Underground SHIRLEYW.
CLARKE
D N2580 W921 S401
DDDDDD
1555 BROWN'S
37S 22E SL CANYON ROAD
109-1157 IIUnderground IDDI19800912IEJI0.70011511.540It~~WHITE MESA
1
D N1200 E280 SW 21
DDDDDD
1050 17TH STREET,
37S 22E SL SUITE 950
109-1157 Ilunderground IDD1198009121EJ10.70011511.54011~~~WHITE MESA 1
D N200 W200 SE 28
DDDDDD
1050 17TH STREET,
37S 22E SL SUITE 950
109-1157 IlUnderground IDDI19800912IE]O.7001151l.54011~~~WHITE MESA ]
D N1200 W200 SE 33
DDDDDD
1050 17TH STREET,
37S 22E SL SUITE 950
109-1157JlundergrOUnd IDDI19800912IEJIO.70011511.54011~~~WHITE MESA I
D N1200 °SE 21 37S
DDDDDD
1050 17TH STREET,
22ESL SUITE 950
~IUnderground IDOI19460903IDIO.0051Io.000 11~0~~TMILTON I
D S150 W925 E4 35
DDDDDD
747 NORTH 300
36S 22E SL WEST (34-2)
109-1167 IIUnderground II lip 1I1980120911DIS 110.01211°.000 IILYNDA HARRELSONI
D S1430 W270 N4 02 DDDDDDI~;~~TH 100 137S22ESL
109-1173 I l_lFJ~~~D~~t~CARBONIT
Underground EXPLORATION
INCORPORATED
D S1550 W1300 NE 32
DDDDDDlc/oK&AlHELTON ]38S 22E SL
109-1176 lIunderground IDOI19800912IEJlo.600110.000 II~~~~HITEMESA 1
D N1400 W3000 SE 28
DDDDDD
1050 17TH STREET,
37S 22E SL SUITE 950
109-1176 Ilunderground II:~~10119800912IEJlo.600110.000 It~~~HITEMESA I
D N1300 W2400 SE 28
DDDDDD
1050 17TH STREET,
37S 22E SL SUITE 950
109-1176 Ilunderground II:~~10119800912IEJlo.600110.000 II~~~~HITEMESA I
D N2100 W2200 SE 28
DDDDDD
1050 17TH STREET,
37S 22E SL SUITE 950
109-1176 lIunderground IDOI19800912IEJlo.600110.000 II~~~~HITEMESA 1
D N1290 W170 SE 33
DDDDDD
1050 17TH STREET,
37S 22E SL SUITE 950
109-1176 Ilunderground IDOI19800912IEJlo.600110.000 II~~~~HITEMESA I
D N1000 E650 SW 22
DDDDDD
1050 17TH STREET,
37S 22E SL SUITE 950
109-1198 l[llilderground IDDI1981040611DIS IE01511o.000 I
NEDJ.AND
MARILYN PALMER
D S585 E1460 W401
DDDDDD
12 EAST 5TH SOUTH
37S 22E SL 107-5
109-1]99 IIUnderground II liT 11198104031010.052110.000 IIIVAN R.WATKINS IDS2722E310NW01
DDDDDDlp·O.BOX372 I37S22ESL
109-1201 ll!Eiderground II lip 1I1981041611DIS 1[0.015110.000 IIKAREN C.KNIGHT I
D N100 E1920 W4 36
DDDDDDI2164 BLUFF ROAD I36S22ESL
109-1221 I [J[]b~~:~EJI~~E~J DENNIS F.AND
Underground EDITHG.
ANDERSON
D N760 E1532 W4 02
DDDDDDI1307 SO MAIN 137S22ESL
109-1225 IIUnderground II liT 1I1981070811DIS 110.10~10.000 IIDENNIS E.GUYMON I
D N105 WIIlO E4 02
DDDDDDIBOX657 137S22ESL
109-1227 I
well r-JI981081O[J015110000 I
DENNIS F.AND
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D N760 E1532 W402
DDDDDD
1307 SOUTH MAIN
37S 22E SL (79-9)
~IUnderground 11:~;1 IDI19470822IDI0.0151Io·000 IIGEORGE F.LYMAN 1
D N500 E200 SW 15
DDDDDDIBLANDING UT 84511137S22ESL
\09-1230 IIUnderground II liT 1I1981092111DIS 110.015110.000 IIRICHARD ARTHUR 1
D N750 E2390 W4 02 DDDDDDI~:~UTH100 137S22ESL
109-1233 IIUnderground II lip 1I1981100711DIS 110.000113.266 IIKIRK BLACK 1
[JN306 E51 W401 [][~J[~J[J[J[~J1727 SOUTH
AROUND THE37S22ESLWORLD103-23
109-1236 I
well DI1981110211D15 110.015110.000 1
JAMESR.AND
Underground info CHRISTINA J.
BRANDT
I IIS910 E2020 W4 01 II II
"
1001 11139 SOUTH 100 I
I 1137S 22E SL IC~I II 1001 !!WEST (68-2)I
109-1238 lIunderground 1well Or811223IE]o.0~lo.ooo I!ALYCE M.RENTZ 1info
D N1300 E50 S4 01
DDDDDD
BROWN CANYON
37S 22E SL ROAD 103-8
109-1248 Ilunderground II lip 11198202091[![]!0.0151Io.000 IIREED HURST I
D S1470 E125 N4 02
DDDDDDI354S.300W.#56 137S22ESL
109-1262 lIunderground II:~~10119820811IEJlo.01511°·000 IIGERALD B.HEINER 1
D N132 E2244 W4 02
DDDDDDlp.o.BOX 1127 137S22ESL
109-1287 lIunderground I:~~011983020711DIS 11°.01511°.000 IIALVIN H.KAER I
D N476 E2256 W4 02
DDDDDDlp.O.BOX 1133 137S22ESL
109-1290 lIunderground IDOI19830323IEJlo.01511°·000 I
CARLAL.AND
MARK E.ENDRES
D S932 W363 N4 03 DDDDDDI~6~~ST 1600 I37S22ESL
109-1346 Ilunderground IDOI198403051010.01511°·000 1
J.GLEN &EVA L.
SHUMWAY
D S1321 W1980 E4 15
DDDDDD
578 SOUTH 200
37S 22E SL WEST 61-1
~IUndergrOUnd IDOI195005251010.01511°·000 ILORRAINE AND
VERLJ.ROSE
D S1326 W1205 E4 02
DDDDDD
1166 SOUTH 100
37S 22E SL EAST
109-1396 I DDE~EJB~~]WINTERSHALL OIL
Underground &GAS
CORPORATION
D S2722 ElO NW 01
DDDDDD
1020 15TH STREET,
37S 22E SL SUITE 122E
109-14021 D[]E:E]t~~EJ C/O PERMITCO
Underground WINTERSHALL OIL
&GAS
CORPORATION
D S2722 ElO NW 01
DDDDDD
1020 15TH STREET,
37S 22E SL SUITE 22E
~Iunderground Iwell 0119500918101°.01511°.000 II~~~~~~M.Iinfo
D N1287 W448 SE 10
DDDDDDIBLANDING UT 84511J37S22ESL
[09-1457 .DDE3tJBr~WINTERSHALL OIL
Underground &GAS
CORPORATION C/O
PERMITCO
D S2722 ElO NW 12
DDDDDD
1020 15TH STREET
37S 22E SL SUITE 22E
P9-1468 lIunderground IDDI1986041411DIS 11°.01511°.000 IRONALDD.&
CATHERINE A.KIRK
D S570 E1458 W4 01
DDDDDD
BROWN CANYON
37S 22E SL ROAD (103-9)
109-1477 Ilunderground 1well DI199311081~lo.0151Io.000 IIJOANN WATKINS 1info
[]N750 W2180 SE 01 [JlJDl]lDEAST BROWN
CANYON ROAD 103-37S 22E SL 14
109-1535 I [][jr8~jE][00lI3~•••~QUINTANA
Underground PETROLEUM
CORPORATION
D DDOUUD ATTN:LISA GREEN,
S2722 ElO SW 01 AGENT FOR
37S 22E SL QUINTANA
PETROLEUM
109-1548 IIUnderground IDDI19871202IEJlo.oooI18.000 I
YATES PETROLEUM
CORPORATION
D N2558 ElO SW 01
DDDDDD
C/O PERMITS WEST
37S 22E SL INC.
109-1664 lIunderground IDDI1989091311DIS 11°.01511°.000 II~T~~;gHAM I
D N340 W305 SE 34
DDDDDD
1244 SOUTH 100
36S 22E SL EAST (80-1)
109-1673 Ilunderground 1well DI19940524IEJlo.01511°·000 IHENRY CLYDE
info WATKINS
D S3000 E200 NW 01
DDDDDD
1000 BROWNS
37S 22E SL CANYON 103-14
109-1686 i DDE~FJF~lt~GENERAL
Underground ATLANTIC
RESOURCES INC.
D S2722 ElO NW 01
DDDDDD
C/O PERMITS WEST
37S 22E SL INC.ATTN:BRIAN
I II I[I[IC [001 IlwoOD I
109-1709 lIunderground ID01199005041010.00018
GORDONREDD
MANAGEMENT INC.
D N2505 E1629 S4 34
DDDDDD
82 SOUTH MAIN
36S 22E SL STREET
109-1734 lIunderground IDDI1990101OIEJlo.oooI12.000 1
CELSIUS ENERGY
COMPANY
D S2722 ElO NW 01
DDDDDD
C/O PERMITS WEST
37S 22E SL INC.
109-1785 IIUnderground [I [[A [11991103111DIS 110.100110.000 IIBERTHA SNYDER [
D S200 E800 W4 01
DDDDDD
409 EAST 1000
37S 22E SL NORTH
109-1794 Ilunderground I~~~l DI19920313IE~]O.100110.000 IIJAMES D.REDD IDNI115E2320SW02
DDDDDD
SANTA FE HEIGHTS
37S 22E SL 104-9
109-1801 I1Underground IDDI19920714IEJlo.oooI19.000 11:~~i~~C'IDS2722ElONW01
DDDDDDIC/OBILLYHASS I37S22ESL
109-1822 :I:~~Ill11993031SEJlOOO+730 IDENNIS F.AND
Underground EDITH G.
ANDERSON
D S250 W250 NE 03
DDDDDDI1307SOUTH MAIN I37S22ESL
109-1843 lIunderground Iwell 011994032311DIS Ilo.oooIGEROLD PERKINS Iinfo
l~_i S201 E1530 NW 03 ll[][l[llie]1092 EAST BROWNS
37S 22E SL CANYON ROAD
(103-18)
109-1844 lIunderground II~~~IDI19940331IEJlo.oooI13.760 II~~~~TONKIRK I
D N2125 E846 SW 02
DDDDDD
292 WEST CENTER
37S 22E SL STREET BOX 67-7
1°9-1845 Ilunderground IDDI19940331IEJlo.oooI13.760 II~~~~TONKIRK IDN1115E1220SW02
DDDDDD
292 WEST CENTER
37S 22E SL STREET BOX 67-7
109-1848 IIUnderground 1well 0119940411IDlo.ooollo.750 11M.DALE SLADE Iinfo
D N35 E40 SW 04 37S
DDDDDD
332 WEST 400
23ESL SOUTH (64-5)
109-1862 lIunderground IDDI19950118IEJlo.500110.000 I
KOKEPELLI
BOTTLING
D N200 W2250 E4 36
DDDDDD
36 EAST 500 SOUTH
36S 22E SL (77-15)
109-1875 lIunderground IDD119950417IIDIS 110.000114.730 I
STAN &SANDRA
PERKINS
D N2105 W235 SE 34
DDDDDD
686 NORTH
36S 22E SL DAYBREAK DRIVE
109-1878 IIUnderground II 1~~119950505!DI0.000111.680 IIBRUCE 1.LYMAN I
D S92 W2566 E4 33
DDDDDD
SHIRTAIL JUNCTION
36S 23E SL (105-7)
109-1880 lIunderground II:~~IDI199506201lDIS 110.000114.730 I
MITCHELL H.&
JANA L.BAILEY
D S945 E1095 NW 15
DDDDDD
SHIRTAIL CORNER
37S 22E SL 105-14
109-1886 lIunderground I:~~l DI1995080711DIS 110.00018PAULA.OR
SHARON BROWN
D N868 W1260 SE 01
DDDDDD
BROWN'S CANYON
37S 22E SL ROAD (103-16)
109-1912 lIunderground Iwell DI19960521IEJI0.000114.730 IITHOMAS A.MAY Iinfo
[JN500 W545 S4 02 [-I_l[J[llJ[~l 2202 SOUTH CINCO
37S 22E SL CEDROS ROAD (104-
8)
109-193 IIUnderground II lip 1119560316IDI0.0151Io.000 IIALMA U.JONES I
D S50 W1420 E4 33
DDDDDDIBLANDING UT 84511137S22ESL
109-1934 lIunderground II:~~IDI199608301iDIS 110.00018
RONALDF.&
MERLE MCDONALD
D N1816 W651 S4 01 [][J[J[JD[J 1500 BROWN'S
37S 22E SL CANYON ROAD
(103-2)
109-1947 lIunderground Iwell DI1996112611DIS 110.0001~~]THOMASA.MAY Iinfo
D N174 W901 S4 02 JJDDDD 2202 SOUTH CINCO
37S 22E SL CEDROS ROAD (104-
8)
109-1953 I/Underground II liT 1119970430!!DIS !!0.000!14.730 !!JERRY HOLLIDAY 1
D S2393 W2494 NE 02
DDDDDDlp·O.BOX502 I37S22ESL
109-1955 IIUnderground 1:veIl DI199705271§]lo.oooI14.730 IIJIM &MARY ImfuBOURNE
D N3055 W1059 SE 01 DDDDDDI~~~ORTH500 I37S22ESL
1°9-1959 I []E~JI~~~~9jl]r~~t~~J LLOYDD.&
Underground CLARABELLA
ELLGEN
D N2339 E191 SW 35
DDDDDD
859 SOUTH 100 EAST
36S 22E SL (82-9)
109-1964 Ilunderground I:~~D12003051211DIS 11°.0°°11°.990 IIBEN J.BLACK I
D N516 E625 W402
DDDDDD
83 WEST 300 SOUTH
37S 22E SL 75-5
109-1968 Ilunderground Iwell DI1997091511DIS 11°.0°°114.730 I
BRUCE &PEGGY
info ROYER
D N600 W880 SE 01
DDDDDDlpOBOX 1145 I37S22ESL
~Iunderground II:~~IDI19560512IEJI2.000110.000 1
UTE MOUNTAIN
UTE TRIBE
D N1005 W207 S4 23
DDDDDDITOWAOCC081334 I38S22ESL
109-1972 lIunderground IDD11997102311DIS 11°.0°°114.730 IDALE &MARTHA
LYMAN
D N1095 W725 E4 21
DDDDDDlp·O.BOX729 I37S22ESL
109-1979 lIunderground 1well DI1998021711DIS 11°.0°°113.774 I
PAUL REDD &LISA
info MACDONALD
D N110 W2339 W4 34
DDDDDD
466 WEST 800
36S 22E SL SOUTH 60-15
109-1982 Ilunderground IDDI199803201iDIS 11°.0°°114.730 1
JEANNINEB.
ERICKSEN
D N1420 W1560 SE 01
DDDDDDI771 SOUTH 700 EAST I37S22ESL
109-1983 Ilunderground II:~~IDI199804131§]lo.oool~DON c.&REBECCA
P.LARSONDS251E933W435
DDDDDD
301 E.EAGLE VIEW
36S 22E SL LN.95-19
109-1990 lIunderground II:~~IDI200403041§]lo.oooI14.450 I
DUSTIN AND
BEVERLY
I II II II II 1001 IIFELSTEAD ~
D N1847 W893 SE 01 D[][~J[J[J[~J 1863 NORTH
37S 22E SL CANYON VIEW
DRIVE (103-22)
109-1991 Ilunderground I:~~DI1998070211DIS 11°.0°°114.730 I
ARDEN C.&BILLIE
SUE NIELSON
D N1480 W1905 SE 11
DDDDDDIBOX864 I37S22ESL
1°9-2001 Ilunderground II:~~IDI1998100211DIS Ilo.oooIBIANNA M.RAFFERTY I
D S860 E315 NW 22
DDDDDDlp·o.BOX553 I37S22ESL
109-2006 IIUnderground II liT 1119990112IIDIS 110.000114.730 IIMARTHA LYMAN I
D S660 W700 NE 21
DDDDDDlp·O.BOX96 I37S22ESL
109-2010 Ilunderground I:~~Dr9903151EJlo.ooo18
STEVEN C.AND
SHAUNA E.BLACK
D N2430 E2540 SW 36
DDDDDD
1606 EAST HARRIS
36S 22E SL LANE (102-9)
109-2012 I 1•.~.••J[]I:~IEJ[o~II~~J JULIE MAY KNITTEL
Underground AND CAROL ANN
BLISS
D S76 W1085 E402
DDDDDD
2250 NORTH 1200
37S 22E SL EAST
109-2021 lIunderground I:~~DI199908101IDIS Ilo.oooIEJISHELLY BLAKE IDS275E561W435
DDDDDD
853 SOUTH 200 EAST
36S 22E SL (95-23)
109-2033 I l~lIJE~][JF~F~RANDALL &
Underground MARILYN
PEMBERTON
[~]N1652 E30 SW 36 [][.J[~JIJIJI~~J 1727 SOUTH
36S 22E SL AROUND THE
WORLD 103-23
109-2035 lIunderground II:~~IDI20000504IEJlo.oooI14.730 IIALAN SHUMWAY I
D N1151 E577 SW 35
DDDDDD
1201 SOUTH 200
36S 22E SL EAST (95-22)
109-2040 Ilunderground II:v
ell
IDI200007251IDIS 11°.0°°114.730 IIDAVID RAY IlnfuPALMER
I IINl12 W270 E4 35 II II II 1001 11755 SOUTH MAIN 1
I 1136s 22E SL IL~CJI IDDL~ISTREET 1
109-2065 Ilunderground IDDI2001122111DIS 110.000114.730 1
JAMES G.AND
STACY MONTELLA
D S100 W650 E4 02 [-JDDOLJD 978 EAST BROWN
CANYON ROAD37S22ESL(103-19)
109-2068 Ilunderground I:~~DI2007050211DIS 110.000112.904 IIBRUCE E.STEVENS 1
D S80 W710 NE 02
DDDDDD
1314 SOUTH 1100
37S 22E SL EAST 102-16
109-2069 I :~~[]200709121IDIS 110000r~]JOE (JR)AND
Underground SHIRLEY A.
GRISHAM
[~]SlllO W277 E4 02 [JL~l[=I[~I[l[]2044 SOUTH
PERKINS LANE 103-37S 22E SL 20
109-2070 !:~r~}OO20409F}·000Ill~5i~RICHARD 1.AND
Underground MARIEANN
WATKINS
[--]S162 W4489 E4 01 DD[_-JL-J[J[~J 1302 BROWN
CANYON ROAD 103-37S 22E SL 24
109-2074 "Underground II liT 1120020521IDI0.000114.730 IIBRUCE J,LYMAN I
D N1020 W1220 SE 15
DDDDDD
SHIRTAIL JUNCTION
37S 22E SL 105-7
109-2075 !I~J[]120020603IE~lt~IF~~USA CORPORATION
Underground INTERNATIONAL
URANIUM
D S769 W1812 NE 33
DDDDDDlp,O,BOX 809 137S22ESL
!09-2075 I D[JE~jET~B USA CORPORATION
Underground INTERNATIONAL
URANIUM
D S1039 W1600 NE 33
DDDDDDlp,O.BOX809 I37S22ESL
!09-2075 I DDt~~FJ~~~~t~~USA CORPORAnON
Underground INTERNATIONAL
URANIUM
D S1156 W1591 NE 33
DDDDDDlp,O,BOX 809 137S22ESL
109-2075 IIUnderground II liT 1120020603110x 110.0001116,140 IluSA CORPORATION I
01 IDDDDDD
INTERNATIONAL
URANIUM
OS1023 W1576NE33
DDDDDDlp·O.BOX809 I37S22ESL
1°9-2075 I [][J02~~FJ~I~~USA CORPORATION
Underground INTERNATIONAL
URANIUM
0
S903 W1563 NE 33
DDDDDDlp·O.BOX809 I37S22ESL
1092075
I DDBFlBB USA CORPORATION
Underground INTERNATIONAL
URANIUM
0
S1434 W1537 NE 33
DDDDDDlp·O.BOX809 I37S22ESL
109-2087 lIunderground Iwell DI2002081511DIS 110.0001EJIBEN J.BLACK I~nfo
0
N516 E631 W4 02
DDDDDD
303 EAST BROWNS
37S 22E SL CANYON RD.
109-2094 Ilunderground IDD1200209241EJ10.00018
SUMNERH.
PATTERSON
0
N125 W907 E4 34
DDDDDD
788 SOUTH MAIN
36S 22E SL STREET 78-11
109-2097 Ilunderground IDDI20021004IEJI0.000114.730 II~~~~~F.I
0
S581 E53 W4 01 37S
DDDDDD
63 NORTH 100 WEST
22ESL (17-2)
1°9-2100 :[J[JE~~]t~JE1F~3 INTERNATIONAL
Underground URANIUM USA
CORPORATION
0
N36 W2249 SE 28
DDDDDDlp·O.BOX809 I37S22ESL
1°9-2100 !D[lE~I~I~I~INTERNATIONAL
Underground URANIUM USA
CORPORATION
0
N139 W2146 SE 28
DDDDDDlp·O.BOX809 I37S22ESL
[09-2100 !DDEjEJF~E INTERNATIONAL
Underground URANIUM USA
CORPORATION
0
N138 W1890 SE 28
DDDDDDlp·O.BOX809 I37S22ESL
109-2100 I [J[JBElr~~EI INTERNATIONAL
Underground URANIUM USA
CORPORATION
D N148 W1696 SE 28
DDDDDDlpoOoBOX809 137S22ESL
109-2100 I [JDBE1BB INTERNATIONAL
Underground URANIUM USA
CORPORATION
D S6 W1614 NE 33
DDDDDDlpoOo BOX 809 137S22ESL
109-2100 I [JDBEJBE~~j INTERNATIONAL
Underground URANIUM USA
CORPORATION
D S178 W1598 NE 33
DDDDDDlpoOoBOX809 137S22ESL
F=iJ I:~~[]195701291[}0l+000 IUSA BUREAU OF
Underground LAND
MANAGEMENT
D N3279 E3641 SW 29
DDDDDD
2370 SOUTH 2300
38S 23E SL WEST
109-2125 lIunderground 1well D1200307151EJIOoooo1140730 IISAN JUAN COUNTY 1info
D N1247 W433 SE 34
DDDDDDlpoOoBOX9 136S22ESL
109-2139 lIunderground IDDI2004012611DIS 11000001140730 II~ic:;LL Ho 1DN95E1830SW10
DDDDDD
105-14 SHIRTAIL
37S 22E SL CORNER
109-2140 Ilunderground II:~~IDI2004021711DIS 11000001140730 IITONY F.GUYMON 1DN2565E2680SW02
DDDDDD
BROWN CANYON
37S 22E SL ROAD 104-7
109-2152 Ilunderground IDDI2004111511DIS 11000001140730 IJAMES R.AND
WENDY L.BUNTING
D S2520 E420 NW 36
DDDDDD
905 EAST HARRIS
36S 22E SL LANE
109-2162 Ilunderground IDDI2005040711DIS 11000001140730 1
LEE Ro &DENIECE
A.MEYERS
D N1095 W725 E4 21
DDDDDD
1051 WEST 4350
37S 22E SL SOUTH 105-10
\09-2170 IIUnderground Ilwell lip 11200601031[Q[]000001140730 IIDANIEL AND I
[~I ~EJDDDDD MARILYN
KARTCHNER
D S1285E5~DDDDDD 1551 S.BOOTS &
37S 23E SL SPURS LANE
109-2182 Ilunderground IDDI2006081411DIS 11°.0°°114.730 1
GLENN &GLORIA
PATTERSON
D N1390 E90 S4 02
DDDDDDlp.OBOX 972 I37S22ESL
109-2185 IIUnderground II liT 1120060908!lQI:Jlo.ooo![73Q]!MARTHA A.LYMAN]
D S100 W990 NE 21
DDDDDDI90WEST 100 SOUTH I37S22ESL
109-2187 I :~~[]1200609201ID~1100001140730 I
RANDALL &
Underground MARILYN
PEMBERTON
D N784 E278 W4 01
DDDDDD
72 SOUTH 100 WEST
37S 22E SL 70-1
109-226 Ilunderground II:~~IDI1958011OIEJlo.015110·000 II~~HKESHAOF 1
D S1639 E1689 N4 03
DDDDDDIBOX#714 137S22ESL
109-2263 Ilunderground IDDI2007012411DIS 11°.0°°114.730 ISTAN &SANDRA
PERKINS
D N2010 W235 SE 34
DDDDDD
686 NORTH
36S 22E SL DAYBREAK
109-2267 lIunderground I:~~DI20070323IEJlo.oooll°.450 1
JEFF &SHERI
MONTELLA
D S516 E2 E4 02 37S
DDDDDDlp·O.BOX285 122ESL
109-2270 lIunderground 11:~~1 IDI200705301lDIS 11°.0°°112.562 ICRAIG B.AND
JOANNE T BARLOW
D N2383 E1328 SW 35
DDDDDDlp·O.BOX625 136S22ESL
109-2276 I well [J007082911DIS 1100000112.478 I
GLENNT.AND
Underground info GLORIAJ.
PATTERSON
D N348 W1021 E401
DDDDDD
1981 KOKOPELLI
37S 22E SL LANE
109-2286 Ilunderground IDDI2007121811DIS 11°.0°°114.730 1
MITCHELL H.&
JANA L.BAILEY
D N834 E1230 S4 16
DDDDDD
210 N.SHIRTTAIL
37S 22E SL WAY
109-2290 IIUnderground II IIA 112008022111DIS 110.000114.730 IILOIS SHUMWAY IDS284W423NE03
DDDDDDIpOBOX447 I37S22ESL
109-2296 lIunderground IDOl2008050511DIS 11°.0°°114.730 I~~DELL &ELIZA
D S1255 W814 E4 02
DDDDDDlp·o.BOX555 137S22ESL
109-2297 Ilunderground IDOl2008051611DIS 11°.0°°114.728 INELLADEE AND
JACK L.STREET
D S100 W650 E4 02
DDDDDD
1004 EAST BROWNS
37S 22E SL CANYON ROAD
109-2306 Ilunderground II:;~10120081006IEJlo.ooollo.534 ]
ANDY &ALICIA
BLACK
D S400 E738 W4 36
DDDDDDI1312 HARRIS LANE 136S22ESL
109-2309 IIUnderground II IIA 1120081103IIDIS 110.000114.470 IIKEVIN BLACK IDS955E192NW01
DDDDDDI41 EAST 300 SOUTH 137S22ESL
109-2311 lIunderground IDOl200811101IDIS 11°.0°°114.730 11~:i~:TERRI 1DS50W990NE21
DDDDDDIpOBOX106 137S22ESL
109-2312 lIunderground IDOl200812301iDIS 11°.0°°114.730 1
JACK &NELLADEE
STREET
D S72 W662 E4 02 37S
DDDDDD
1004 EAST BROWNS
22ESL CANYONRD
109-2316 lIunderground IDOl2009020911DIS 11°.0°°114.590 1
FRANKLINP.
HAWKINS
D S1095 W725 NE 21
DDDDDD
4238 SOUTH 1000
37S 22E SL WEST
1
09
-
255
i DDBDBEl USA BUREAU OF
Underground LAND
MANAGEMENT
D S688 E128 W4 14
DDDDDD
2370 SOUTH 2300
38S 21E SL WEST
EJ [][[IBDBE:]UTAH SCHOOL AND
Underground INSTITUTIONAL
TRUST LANDS
ADMIN.
D S943 W546 N4 32
DDDDDD
675 EAST 500
38S 23E SL SOUTH,5TH FLOOR
109-348 lIunderground IDOI19640513IDlo.01111°·000 IKELLY G.&TERRI J.
LAWS
D N2265 W900 S4 33
DDDDDDI295W.400N.I36S23ESL
1°9-365 IIUnderground II lip 11196410131[[=]0.015110.000 IIEUGENE GUYMONJ
D N747 W932 E4 02
DDDDDDlp.o.BOX 117 I37S22ESL
1°9-385 I[Underground II liT 1li§i<i'tTI]OI0.500110.000 I[!"IARRIS SHUMWAY I
D S1320 E395 NW 33
DDDDDDIBOX172
137S22ESL
109-423 IIUnderground II lip 1I1935052211DIS 110.022115.580 IIFRED S.LYMAN I
D N340 W750 S4 10
DDDDDDIBLANDING UT 84511137S22ESL
1°9-466 IIUnderground II lip 1119680308IDlo.o071Io.000 IILORENZO HAWKINS I
D S152 W76 NE 32
DDDDDDlp.o.BOX 182 137S22ESL
1°9-473 I [~JE]t6~:~t]tojr~:J USA UTAH LAUNCH
Underground COMPLEX WHITE
SANDS MISSLE
RANGEC]S608 W327 NE 27 LJD[DDDCl C/O A.MURAY
37S 22E SL MAUGHN,SITE
DIRECTOR
109-474 lIunderground IDDI19690303IDlo.01511°·000 IHARVEY J.
KARTCHNER
D S3700 W2000 N4 35
DDDDDDIBOX232 I36S22ESL
1°9-496 I DDBUHB MONTICELLO
Underground DISTRICT USA
BUREAU OF LAND
MANAGEMENT
D N1098 E1642 SW 11
DDDDDDlp.o.BOX 1327 I38S21ESL
1
09
-
504
I DDBDBEJ USA BUREAU OF
Underground LAND
MANAGEMENT
D S3219 E3255 NW 08
DDDDDD
2370 SOUTH 2300
37S 22E SL WEST
1°9-510 IIUnderground II liT 11197103181[=]2.00011°.000 IIWILLIAM B.REDD I
D N200 E2750 SW 03
DDDDDDIBOX531 137S21ESL
109-510 IIUnderground II liT 111971031810[2.000110.000 JIWILLIAM B.REDD I
D NO E3000 SW 03
DDDDDDIBOX531 137S21ESL
109-528 IIUnderground II lip 111972031 511D1S 110.015110.000 IIJ.PARLEY LAWS I
D N3110 W1790 SE 02
DDDDDDlp.o.BOX#315 137S22ESL
109-541 I DDBDBB BLANDING
Underground VACATIONS
INCORPORATED
D S1550 E2500 NW 15
DDDDDDIpOBOX66 I37S22ESL
109-544 IIUnderground [~IT 11197209221010.015110.000 IIROBERT E.HOSLER 1
D N1678 W953 SE 03
DDDDDDIpOBOX421 137S22ESL
109-546 I []t~JI~~~~~;~lb]E~~[~~i WILLIAM W.AND
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SIMPSON
D S3273 E1687 N403
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109-573 IIUnderground II lip 1I1973092711DIS lIo.084IfuQL]!ERWIN OLIVER I
D N1610 E1260 SW 35
DDDDDDlp.o.BOX #285 136S22ESL
109-581 IIUnderground II lip 11197405021010.30011°.000 IIDELORES HURST I
D S70 W900 E4 35 36S
DDDDDD
516 WEST 100
22ESL SOUTH (50-5)
109-581 IIUnderground II lip 11197405021010.30011°.000 IIDELORES HURST I
D S750 W430 E4 35
DDDDDD
516 WEST 100
36S 22E SL SOUTH (50-5)
1°9-581 IIUnderground II lip 11197405021010.300110.000 IIDELORES HURST I
D S20 W325 E4 35 36S
DDDDDD
516 WEST 100
22ESL SOUTH (50-5)
109-582 lIunderground IDOI197405021010.750110.000 II~~~~TMILTON 1
D S75 W1l85 E4 35
DDDDDD
747 NORTH 300
36S 22E SL WEST (34-2)
109-582 Ilunderground IDOI197405021010.750110.000 ITRAVIS EVAN
PEHRSON
D S60 W860 E4 35 36S
DDDDDD
747 NORTH 300
22ESL WEST (34-2)
1°9-584 IIUnderground Ilwell lip 11197405031~IO.0151Io.000 IILEONARD R.HOWE I
1 II Ilinfo II II 1001 II .~
D S619 W135 N403
DDDDDDlp.o.BOX #1025 I37S22ESL
109-597 IIUnderground II lip 1119740829IDI0.0151Io.000 IIDOROTHY PERKINS I
D S590 W810 E4 21
DDDDDD
NORTH RESERVOIR
37S 22E SL ROAD (37-1)
109-606 IIUnderground II liT 1119741127IIDIS 110.100110.000 IIJESS M.GROVER J
D N2040 W350 S4 01
DDDDDDlp.o.BOX #564 137S22ESL
~IUnderground Iwell 011975042111DIS 110.010110.000 1
MARK EUGENE
info SHUMWAY
D Sl140 W220 N4 03
DDDDDD
444 WEST 1600
37S 22E SL SOUTH (79-2)
109-619 IIUnderground II liT 111975061911DIS 110.015110.000 IIBOYD LAWS I
D S2400 W210 N4 22
DDDDDDlp.o.BOX #317 I37S22ESL
109-631 IIUnderground II lip 1119751120!!DIS 110.100110.000 IIEUGENE GUYMON I
D N747 W932 E4 02
DDDDDDlp.o.BOX #117 137S22ESL
109-631 IIUnderground II lip 1119751120llDIS 110.100110.000 IIEUGENE GUYMON I
D N400 W350 E4 02
DDDDDDlp.o.BOX#117
137S22ESL
109-631 IIUnderground II lip 111975112011DIS 110.100110.000 IIEUGENE GUYMON I
D N275 W150 E4 02
DDDDDDlp.o.BOX#117 I37S22ESL
109-634 lIunderground 1well 0119751129IDI0.0151Io.000 1
LORRAINE ROSE
info AND VERL J.ROSE
D S1326 W1205 E402
DDDDDD
1166 SOUTH 100
37S 22E SL EAST
109-637 Ilunderground Iwell 0119760103IEJlo.200110.000 IHENRY CLYDE
info WATKINS
D S2722 E10 NW 01 [JlJ[:JDDD EAST BROWN
37S 22E SL CANYON ROAD 103-
14
109-663 IIUnderground IC~IT 1I1976062311DIS 110.015110.000 IIGRANT L.BAYLES !
D N1155 E870 SW 22
DDDDDDlp.o.BOX #275 137S22ESL
109-666 IIUnderground IDDI19761021IEJI1.000110.000 IHEMIWEST
PROPERTIES
D N3200 W2600 SE 23
DDDDDD
1325 SOUTH 800 ]37S 21E SL EAST
109-666 Jiunderground IDDI19761021IEJ~·000110.000 1
HEMIWEST
PROPERTIES
D N3000 W1300 SE 23
DDDDDD
1325 SOUTH 800
37S 21E SL EAST
109-666 lIunderground IDDI19761021IEJ~·000110.ooo 1
HEMIWEST
PROPERTIES
D N2100 W200 SE 23
DDDDDD
1325 SOUTH 800
37S 21E SL EAST
109-666 Ilunderground IDDI19761021IEJI1.0001Io.00o 1
HEMIWEST
PROPERTIES
D N2100 E1200 SW 24
DDDDDD
1325 SOUTH 800
37S 21E SL EAST
109-672 lIunderground II:~~IDI1976121OIEJlo.0151Io.000 I
ENERGY FUELS
LIMITED
[~J N640 W1650 SE 28 O[]CJeLJ[_J 1200 17TH STREET,
37S 22E SL ONE TABOR
CENTER SUITE 2500
109-689 lIunderground II:~~IDI197703071IMOSII1.11011803.600It~~WHITE MESA 1DN1400W3000SE28
DDDDDD
1050 17TH STREET
37S 22E SL SUITE 950
109-689 Ilunderground II·:~~DI197703071IMOslll.11011803.60011~~~WHITE MESA IDN1300W2400SE28
DDDDDD
1050 17TH STREET
37S 22E SL SUITE 950
109-689 Ilunderground Iwell DI197703071IMOslll.ll011803 .60011~~g~GY FUELS Iinfo
[~J N2100 W2200 SE 28 [J[Jl.~••••~••I[]l~••I[j1200 17TH STREET,
37S 22E SL ONE TABOR
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109-689 Ilunderground IDDI197703071IMOslll.ll011803.60011~~~WHITE MESA
1DNI000E650SW22
DDDDDD
1050 17TH STREET
37S 22E SL SUITE 950
~IUndergrOUnd II:~~IDI1977040711DIS 110.015110.000 IIDEAN W.GUYMON 1DS360W350NE03
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109-740 IIUnderground Ilwell lip 11197704191010.015110.000 IIWINSTON AND I
01 IEJDDDDD
KATHRYN J.HURST
BAYLISS
0
N320 W1240 E4 27 DDDDDDI~~~ORTH 100 138S22ESL
109-743 IIUnderground II liT 11198510161l!2:[]0.0151Io.000 110.FROST BLACK I
0
N150 E50 SW 36
DDDDDD
208 SOUTH 200
36S 22E SL WEST (65-5)
~Iunderground IDOI197704271010.0151Io·000 IELIZABETH ANN
HURST PHILLIPS
0
N670 E950 S4 34
DDDDDDlp.o.BOX #389 136S22ESL
109-778 IIUnderground II liT 1[197705041~10.0151Io.000 IIREX D.ANDERSON I
0
S310 E1240 W4 15
DDDDDDlp·0.BOX569 137S22ESL
109-792 lIunderground Iwell 011977050911DIS 110.015110.000 IHENRY CLYDE
~nfo WATKINS
[-_l S80 E220 W4 01 37S Dl_-jl~_lL]DCl1000 EAST BROWNS
CANYON ROAD 103-22ESL 14
109-805 Ilunderground IDDI197705101IDIS 110.015110.000 IBAR M.K.RANCHES
INCORPORATED
0
N1540 E1340 W4 03
DDDDDDIBOX576 137S22ESL
109-806 lIunderground IDDI197705101IDIS 110.015110.000 1
BAR M.K.RANCHES
INCORPORATED
0
N1200 E990 W4 14
DDDDDDIBOX576 137S22ESL
109-808 Ilunderground IDDI197705101IDIS 110.015110.000 IBAR M.K.RANCHES
INCORPORATED
0
N990 W990 S4 11
DDDDDDIBOX576 I37S22ESL
109-826 [IUnderground II IIU 1I1977052311DIS 110.500110.000 IlcLISBEE LYMAN I
0
N665 W1015 S4 10
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435 SOUTH 200
37S 22E SL WEST 63-2
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0
N70 W790 S4 10 37S
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0
N340 W750 S4 10
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435 SOUTH 200
37S 22E SL WEST 63-2
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D N315 W450 S4 10
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D N2306 E217 SW 35
DDDDDD
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36S 22E SL DRIVE
/09-832 IIUnderground II liT 1I1980051611DIS 110.015110.000 Ill.KEITH ROGERS 1
D N1728 E215 SW 35
DDDDDD
3488 FOOTHILL
36S 22E SL DRIVE
109-833 IIUnderground II lip 11198005161010.015110.000 Ill.KEITH ROGERS I
D N1265 W250 SE 34
DDDDDD
3488 NORTH
36S 22E SL FOOTHILL DRIVE
\09-834 IIUnderground II liT 1I1980051611DIS 110.015110.000 Ill.KEITH ROGERS I
D N2208 E2252 S4 34
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3488 FOOTHILL
36S 22E SL DRIVE
109-843 Ilunderground IDOI19900308IEJlo.01511°·000 1
STAN AND SANDRA
PERKINS
D N2220 E1930 S4 34
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864 NORTH
36S 22E SL DAYBREAK DRIVE
109-860 IIUnderground Iwell 0119770620IEJlo.01511°·000 ISTANLEYD.
info MARTINEAU
D S830 E1740 W4 01
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109-871 IIUnderground II lip 11197706061[[:=]0.01511°.000 111ESS M.GROVER I
D N270 E520 W4 36
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109-872 lIunderground II:~~10119770606IDlo.01511°·000 1I1ESS M.GROVER 1
D S420 E2080 W4 01
DDDDDDIBLANDINGUT 84511137S22ESL
109-875 lIunderground 1well 01197706301EJlo.0151BIAROE G.BROWN Iinfo
D N1570 W1230 SE 01
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KARAMESINES
D Nl150 W1900 SE 01
DDDDDD
1527 LINCOLN
37S 22E SL STREET APT.#4
109-879 IIUnderground II lip 11197707061010.015110.000 111AMES DEWEY AND I
01 IDDDDDD
SHIRLEY LOU B.BRADFORD
0
N570 W700 SE 36 DDDDDDI149SOUTH 800 EAST I36S22ESL
109-885 lIunderground IDOI197707111010.01511°·000 II~~~~~;:D I
0
N1280 W1050 SE 36 DDDDDDIBOX855 I36S22ESL
109-888 !!underground II:~~10119770711IEJlo.01511°·000 IIFRED E.HALLIDAY I
0
S13lO E585 NW 11 DDDDDDIBOX335
137S22ESL
109-895 IIUnderground II liT 11198009251~]0.0151Io.000 IINELDON E.HOLT I
0
S1340 E1300 N4 21 DDDDDDIBOX394 I37S22ESL
109-896 Ilunderground Iwell 0119770713IDlo.007110.000 IINELDON E.HOLT Iinfo
0
N100 E680 SW 15 DDDDDDIBOX394 I37S22ESL
109-90nlUnderground II liT 1li2iiQfl2JIDIS 110.015110.000 IIREED E.BAYLES I
0
N1520 E650 S4 35 DDDDDDlp.o.BOX #203 !36S 22E SL
109-914 IIUnderground II lip 11197707261[![]lo.0151Io.000 IIEUGENE GUYMON I
0
N275 W150 E4 02 DDDDDDlp.o.BOX#117 I37S22ESL
109-915 IIUnderground II IIU 11197707261[![]lo.100110.000 IIEUGENE GUYMON 1
0
N300 W100 E4 02 DDDDDDlp.o.BOX#117 I37S22ESL
109-925 lIunderground Iwell 011977072811DIS 11°.01511°.000 IIDOROTHY PERKINS I~nfo
0
S75 W25 E4 02 37S DDDDDDI205EAST 700 SOUTH I22ESL
109-93 lIunderground IDOI19440929IDlo.01311°·000 IBARRY LEE ANDLOREEA.WOOLLEY
0
N644 W855 SE 10
DDDDDD
191 BUTTERNUT
37S 22E SL DRIVE NORTH
1°9-949 IIUnderground II liT 1I1977081611DIS 110.015110.000 IIBERTHA SNYDER I
0
S200 E800 W4 01 DDDDDDlp.o.BOX 1318 I37S22ESL
109-954 IIUnderground II 1[f~1197709071IDIS 11°.01511°.000 IlpHYLLIS B.JONES I
D N500 W1280 SE 36
DDDDDDlp.O.BOX #472 =:J36S22ESL
1°9-955 IIUnderground II IE~119770907IDIO.0151Io.000 110.FROST BLACK J
D S175 E50 W4 36 36S
DDDDDDE·BOX#71 I22ESL
P9-958 Ilunderground IDDI19770915IEJlo.01511°·000 1
RICHARD &
NORMAN NIELSON
D S2640 W400 NE 14
DDDDDDlp.o.BOX #245 137S22ESL
1
09
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959
I [}•••~E8~2+I~}~5Fo0j NORMAN AND
Underground RICHARDC.
NIELSON
D N1700 WI100 SE 11
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63 NORTH 100 WEST
37S 22E SL (17-2)
109-960 lIunderground IDDI19880622IEJlo.01511°·000 1
NORMAN AND
RICHARD NIELSON
D S585 E40 W4 01 37S
DDDDDD
63 NORTH 100 WEST
22ESL (17-2)
109-977 Ilunderground IDDI1977100511D1S 11°.01511°.000 1
KENNETHP.
MCDONALD
D N559 °S4 34 36S
DDDDDD
60 NORTH 100 WEST
22ESL (16-5)
1
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Underground GEORGIAR.
KARAMESINES
D N1270 W1980 SE 01
DDDDDD
1527 LINCOLN
37S 22E SL STREET APT.#4
109-984 Ilunderground Iwell D119771013IIDIO 11°.01511°.000 II~t:T~tLA 1info
[~J S545 W505 E4 03 [Jl ••~•••J[~.·]lJ[Jl~J P.O.BOX #643,
37S 22E SL HIGHWAY 163
NORTH
109-988 Ilunderground IDDI19811117IEJlo.01511°·000 11~~~~~o;D
D N700 W270 SE 36
DDDDDDlp.o.BOX #135736S22ESL
109-989 IIUnderground II liT 1I1977103 111DO 110.015110.000 IIREX D.ANDERSON
D N155 ElOlO W4 15
DDDDDDlp·0.BOX56937S22ESL
109-990 lIunderground Iwell D1197711011EJlo.0151EJIEUGENE GUYMONinfo
D N400 W350 E4 02 DDDDDDlp.O.BOX#117 ]37S 22E SL
[09-993 IlYnderground II lip 11197710271[~[]O.0151Io.000 IIBERNAL BRADFORD I
D N1260 W200 SE 36
DDDDDDlp.o.BOX #594 I36S22ESL
109994 i l~It ]:77:l]o~][:J
UTAH SCHOOL AND
Underground INSTITUTIONAL
TRUST LANDS
ADMIN.
D S660 W660 NE 32
DDDDDD
675 EAST 500
38S 22E SL SOUTH,5TH FLOOR
~IUndergrOUnd IDDI1982022311DIS 110.015110.000 INEDJ.AND
MARILYN PALMER
D S551 E1540 W4 01
DDDDDD
12 EAST 5TH SOUTH
37S 22E SL 107-5
la13054 Ilunderground IDDI19831205IEJlo.0151Io·000 INORMAN AND
RICHARD NIELSON
D S585 E40 W4 01 37S
DDDDDDlp.o.BOX #245 122ESL
la20266 JIUnderground II liT 11197703151~12.000110.000 IIBLANDING CITY I
D S2440 W1245 NE 35
DDDDDDI50WEST 100 SOUTH I36S22ESL
la20266 IIUnderground II liT 11197703151~12.000110.000 IIBLANDING CITY
D S2440 W870 NE 35
DDDDDDI50WEST 100 SOUTH36S22ESL
la21545 lIunderground II:veIl IDI19970915IEJI0.000114.730 IIJIM &MARYInfoBOURNE
D N3055 W1059 SE 01 DDDDDDI~~ORTH50037S22ESL
la24139 Ilunderground II:~ID12000020111DIS 110.0001BIANNA M.RAFFERTYI
D S860 E315 NW 22
DDDDDDlp·O.BOX553 137S22ESL
la35842 IIUnderground II IIU 11200908191~12.000110.000 IIBLANDING CITY I
D N938 E135 W401
DDDDDDI50WEST 100 SOUTH 137S22ESL
la35842 IIUnderground II lIu 11200908191~12.0001l0.000 IIBLANDING CITY IDS145E133N412DDC~][lD[~]50 WEST 100 SOUTH I37S22ESL
la35896 IIUnderground II Ilu 112009090811DIS 110.000114.730 IIMITCHELL H.&I
I II II lell IDD[I~L.BAILEY I
D N256 W943 SE 16
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210 N.SHIRTTAIL
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It89-09-0 1 IIUnderground II liT 1119890 1181~10.000115.000 IIIVAN R.WATKINS I
D S2722 ElO NW 01
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It89-09-02I1Underground II liT 11198905041~10.000115.000 IIIVAN R.WATKINS I
D S2722 ElO NW 01
DDDDDDIBOX938 I37S22ESL
Key to Table 1.5-4 Entries
Status
A=Approved
P=Perfected
T=Terminated
U=Unapproved
Uses
D=Domestic
I=Irrigation
M=Municipal
P=Power
S=Stock Water
X=Mining
O=Other
Note that the designation "a"or "t"does not represent an additional water appropriation,
but indicates a modification to an existing appropriation.
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site,and with conductivity of the formation being very low.These observations have been
verified by studies performed for the U.S.Department of Energy's disposal site at Slick Rock,
which noted that the Dakota Sandstone,Burro Canyon formation,and upper claystone of the
Brushy Basin Member are not considered aquifers due to the low permeability,discontinuous
nature,and limited thickness of these units (U.S.DOE,1993).
1.6 Geology
The following text is copied,with minor revisions,from the 1978 ER (Dames and Moore,
1978b).The text has been duplicated herein for ease of reference and to provide background
information concerning the site geology.1978 ER Subsections used in the following text are
shown in parentheses immediately following the subsection titles.
The site is near the western margin of the Blanding Basin in southeastern Utah and within the
Monticello uranium-mining district.Thousands of feet of multi-colored marine and non-marine
sedimentary rocks have been uplifted and warped,and subsequent erosion has carved a
spectacular landscape for which the region is famous.Another unique feature of the region is the
wide-spread presence of unusually large accumulations of uranium-bearing minerals.
1.6.1 Regional Geology
The following descriptions of regional physiography;rock units;and structure and tectonics are
reproduced from the 1978 ER for ease of reference and as a review of regional geology.
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1.6.1.1 Physiography (1978 ER Section 2.4.1.1)
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The Mill site lies within the Canyon Lands section of the Colorado Plateau physiographic
provmce.To the north,this section is distinctly bounded by the Book Cliffs and Grand Mesa of
the Uinta Basin;western margins are defined by the tectonically controlled High Plateaus
section,and the southern boundary is arbitrarily defined along the San Juan River.The eastern
boundary is less distinct where the elevated surface of the Canyon Lands section merges with the
Southern Rocky Mountain province.
Canyon Lands has undergone epeirogenic uplift and subsequent major erosion has produced the
region's characteristic angular topography reflected by high plateaus,mesas,buttes,structural
benches,and deep canyons incised into flat-laying sedimentary rocks of pre-Tertiary age.
Elevations range from approximately 3,000 feet (914 meters)in the bottom of the deeper
canyons along the southwestern margins of the section to more than 11,000 feet (3,353 meters)
in the topographically anomalous laccolithic Henry,Abajo and La Sal Mountains to the
northeast.Except for the deeper canyons and isolated mountain peaks,an average elevation in
excess of 500 feet (1,524 meters)persists over most of the Canyon Lands section.
On a more localized regional basis,the Mill site is located near the western edge of the Blanding
Basin,sometimes referred to as the Great Sage Plain (Em'dly,1958),lying east of the north-south
trending Monument Uplift,south of the Abajo Mountains and adjacent to the northwesterly-
trending Paradox Fold and Fault Belt (Figure 1.6-1).Topographically,the Abajo Mountains are
the most prominent feature in the region,rising more than 4,000 feet (1,219 meters)above the
broad,gently rolling surface of the Great Sage Plain.
SECTOI.RPTINovembcr2009
(
:\~}::IX).....
3:~.............J ~
F;~§)
I /
\l'A\---\TYENDE
\SADDLE
\
ARIZONA
Figure 1.6-1
Colorado Plateau Geologic Map
BOUNDARY OF TECTONIC DIVISION
MONOCLINE SHOWINGTRACE OF AXIS
AND DIRECTION OFDIP
ANTICLINE SHOWING TRACE OF AXIS
AND DIRECTION OF PLUNGE
SYNCLINE SHOWINGTRACE OF AXIS
AND DIRECTION OFPLUNGE
LEGEND
..I
--_.......
II
--+-
«j
il!:>(f
6~~~~
.Q
'iiiII
I~i:L----J
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The Great Sage Plain is a structural slope,capped by the resistant Burro Canyon formation and
the Dakota Sandstone,almost horizontal in an east-west direction but descends to the south with
a regional slope of about 2,000 feet (610 meters)over a distance of nearly 50 miles (80
kilometers).Though not as deeply or intricately dissected as other parts of the Canyon Lands,
the plain is cut by numerous narrow and vertical-walled south-trending valleys 100 to more than
500 feet (30 to 152+meters)deep.Water from the intermittent streams that drain the plain flow
southward to the San Juan River,eventually joining the Colorado River and exiting the Canyon
Lands section through the Grand Canyon.
1.6.1.2 Rock Units (1978 ER Section 2.4.1.1)
The sedimentary rocks exposed in southeastern Utah have an aggregate thickness of about 6,000
to 7,000 feet (1,829 to 2,134 meters)and range in age from Pennsylvanian to Late Cretaceous.
Older unexposed rocks are known mainly from oil well drilling in the Blanding Basin and
Monument Uplift.These wells have encountered correlative Cambrian to Permian rock units of
markedly differing thicknesses but averaging over 5,000 feet (1,524 meters)in total thickness
(Witkind,1964).Most of the wells drilled in the region have bottomed in the Pennsylvanian
Paradox Member of the Hermosa formation.A generalized stratigraphic section of rock units
ranging in age from Cambrian through Jurassic and Triassic (7),as determined from oil-well
logs,is shown in Table 1.6-1.Descriptions of the younger rocks,Jurassic through Cretaceous,
are based on field mapping by various investigators and are shown in Table 1.6-2.
Paleozoic rocks of Cambrian,Devonian and Mississippian ages are not exposed in the
southeastern Utah region.Most of the geologic knowledge regarding these rocks was learned
from the deeper oil wells drilled in the region,and from exposures in the Grand Canyon to the
SECTOI.RPTlNovember1009
(After Stokes.1954.Witlllnd,1964:Huff and Lesure.1965.Jo/'Inson and ThOf"darson,1966)
Stratigraphic Thickneu"
Ag!Unit (ft.)Oesctiption
Glen Canyon Group:
Jurassic and Navajo Sanclstone 300 -400 Buff to light gl1ly,mauive,crosa..oedded,mabie
Tnasslc (?)sanclstone
Tnassic (?)Kayenta Formation 100 -150 Reddish-brown unclstone ancl mudstone ancl
occaaional conglomera.len...
----Triassic Winga.Sanclstone 250 -350 Reddilh-brown,mauNe.crou-bedded.
~fine-grained aandatcne
~Chinle Formation:(/)w::&Undivided 600-700 variegatJld dayltcne with some ItIm beds of
siltatone and limestone
Mou Bad<M«nb«0·100 Light colcnd.c:ongIon'Mn1ic aandatone ancl
cong~
Shinarump Member 0-20 YelIowiIh-gray.line to coetM-gl1lined sanclstone:
COllglomeratic sandI1Dne and conglomel1l11D
---------------u~-~---------------.
Middle (?)and
Lower TriaUic
Moenkopi Formation 50 -100
---------------u~-----------------·
SrI~~'---
Permian
Pennsylvanian
and Permian
(?)
PennayMnilin
Cutler Formation:
Organ Rock Member 0-600 ReddiIh-brown.sandy mudstone
c.etarMeM 1100-1400 ReddiIl'l-bn:Mn.mau/Ye.line to mediufn.gl1linod
Sandstone Member sandstone
RicoFonnation 450 Red Ind gray~.W1dy shale:gray
lin'IeItDne Ind MndItone
HennoM Fonnation:
U"........,..1000·1200 Gntv,mau/Ye~:some thUD 8nd
~
fiI1ndox~1200 Hdill.anhydtitl.gypeum.shale.Ind siItatone
Lower Member 200 ~1lI.~.IndthUD
I.NdvlII8 ~..
Oumy~~
500
100
~totM~to~~
light gmy and tim.~~n
~
GnIly n bmwn ~n ~..wtl thin
bedI grMfIthUD n ~
Gnrynbmwn~n~,
~1Ne~n~
(Aller H:tIyn8S M.•, .1962.Witlond.1964 Huff and lG!l<Jfe.\965)
ERA SYSTEM SERIES
(Age)
STRATlGRAPHIC THICKNESS'
UNIT (ft.)
LITHOLOGY
\.I2ozUJu
:QUATERNARY
Alluvium
I Colluvium and TalU$I
I '
2 -25+
0·15+
0·22+
,si•.sanct and lJI1IWl in af'fO'IOG and strum
VlI"ys
is.wah.taM and rock I\lbble ranging
Ifrom coOOiell and bouldersto mallSllMt blocks
fallen from cliffs and outcrops at ,-.stant reek.
!ReddisMlrown to light-brown.uneonsolidated.'
l'tWlI-torted silt to medium-grained sand:
ipattiallycem.med with caliche In some Irw;I~DlII1lv bv WIt«
!CRETACEOUS
----
Uneonformity ,,
I IGray to datk"9!'IY.ftssM.thin-bedded mann.
0·11(7)Itha'-wIItI ~sandy lim_on.In
,',-strata.
IUght ~to light lJf'IY-brown.
[
thick bedded to c-.oedded sandston..
30·75 conglom....Mlldltolle;interbedded this
Ientlcu/lrIJIrf c:artlonlIc-.claystone and
_____j1imPIA coeI;local CourM b1IMI Conglomerate.:
Ught"9!'IY end Iight-bfown.m-.iwlind
c-.oedded conglomeratic Mlldstol..and ,
50 "150 I~~and ~mudltone;j
locally contIIine ttIin dilcOl'ltinuoula bedI atsiIlc:ilIed MlIOItoI..1Ind 1Im__,...,top.1
f-- - - - - - -~---+-..,..lJncon(ormily (7)-+----+-------------1
1
'1Uftledded yeIIowIIn-lind ~to iIW.....ClIinyon pinkiIh-gray.line-to ~IIkoeic ;
t-__Mem__ber__+-_
O
_"250__t=I~MI=•.:.:::IOItoI"'-='It.:.::::.:::::end'_=IInd=_~:.:.;m'_=_.,.::::dIt=o;.;.:~..:=.:._to_~___i:i IIIUftledded reddIIfl.gray to Ilvht bfDwn ftne.to i,.~Member O·200 !medlum.....,MlIOItoI..1Ind redcIleh1IfIY IIsiIlYlindI.ndv ~.
!11Uftledded~to peIe
I
reddIIMlrown ftne.grIined to ccngIomlll'ltic
MlICIItonee end grMnish-and roddlsh-gray
ml.Mlltone.
!
-l-lJneoIiIoonily--+----+-------·--------l,
0·150+
White to ~.m-.iw.
c-oedded.ftne.to medlumi1f8/ned eoiIan
SlHIOItoIWt.i
i Summ"~.~1IOOId~-3 Fonnan 25·125 ImuddV SlIndetot..and sandy sl'IM."
1+----+---+----------:'
i I 'IReddisMlrown to gmyiIh-wtIitlt.m-.iw.en:=m.I 150·180 i=~'ftne.to mOOium~
!11~~~muddV !
I I
~C&fmel FOffIlIllticn 20 •100+~8If'ld HMy m~wiItt local thin iJ~IIId;:Jt IlfIw;nto lJf'IY lImMtoM and ~,
___"-------k .l..il-l-UneoofemIity _.....:....!...;.it_o_~mMl__._
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southwest and in the Uinta and Wasatch Mountains to the north.A few patches of Devonian
rocks are exposed in the San Juan Mountains in southwestern Colorado.These Paleozoic rocks
are the result of periodic transgressions and regressions of epicontinental seas and their
lithologies reflect a variety of depositional environments.
In general,the coarse-grained feldspathic rocks overlying the Precambrian basement rocks grade
upward into shales,limestones and dolomites that dominate the upper part of the Cambrian.
Devonian and Mississippian dolomites,limestones and interbedded shales unconformably
overlay the Cambrian strata.The complete absence of Ordovician and Silurian rocks in the
Grand Canyon,Uinta Mountains,southwest Utah region and adjacent portions of Colorado,New
Mexico and Arizona indicate that the region was probably epeirogenically positive during these
times.
The oldest stratigraphic unit that crops out in the region is the Hermos formation of Middle and
Late Pennsylvanian age.Only the uppermost strata of this formation are exposed,the best
exposure being in the canyon of the San Juan River at the "Goosenecks"where the river
traverses the crest of the Monument uplift.Other exposures are in the breached centers of the
Lisbon Valley,Moab and Castle Valley anticlines.The Paradox Member of the Hermosa
formation is sandwiched between a relatively thin lower unnamed member consisting of dark-
gray shale siltstone,dolomite,anhydrite,and limestone,and an upper unnamed member of
similar lithology but having a much greater thickness.Composition of the Paradox Member is
dominantly a thick sequence of interbedded slate (halite),anhydrite,gypsum,and black shale.
Surface exposures of the Paradox in the Moab and Castle Valley anticlines are limited to
contorted residues of gypsum and black shale.
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Conformably overlying the Hermosa is the Pennsylvanian and Permian (7)Rico formation,
composed of interbedded reddish-brown arkosic sandstone and gray marine limestone.The Rico
represents a transition zone between the predominantly marine Hermosa and the overlying
continental Cutler formation of Permian age.
Two members of the Cutler probably underlying the region south of Blanding are,in ascending
order,the Cedar Mesa Sandstone and the Organ Rock Tongue.The Cedar Mesa is a white to
pale reddish-brown,massive,cross-bedded,fine-to medium-grained eolian sandstone.An
irregular fluvial sequence of reddish-brown fine-grained sandstones,shaly siltstones and sandy
shales comprise the Organ Rock Tongue.
The Moenkopi formation,of Middle (?)and Lower Triassic age,unconformably overlies the
Cutler strata.It is composed of thin,evenly-bedded,reddish to chocolate-brown,ripple-marked,
cross-laminated siltstone and sandy shales with irregular beds of massive medium-grained
sandstone.
A thick sequence of complex continental sediments known as the Chinle formation
unconformably overlies the Moenkopi.For the purpose of making lithology correlations in oil
wells this formation is divided into three units:The basal Shinarump Member,the Moss Back
Member and an upper undivided thick sequence of variegated reddish-brown,reddish-to
greenish-gray,yellowish-brown to light-brown bentonitic claystones,mudstones,sandy siltstone,
fine-grained sandstone,and limestones.The basal Shinarump is dominantly a yellowish-grey,
fine-to coarse-grained sandstone,conglomeratic sandstone and conglomerate characteristically
filling ancient stream channel scours eroded into the Moenkopi surface.Numerous uranium
deposits have been located in this member in the White Canyon mining district to the west of
Comb Ridge.The Moss Back is typically composed of yellowish-to greenish-grey,fine-to
medium-grained sandstone,conglomeratic sandstone and conglomerate.It commonly comprises
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the basal unit of the Chinle where the Shinarump was not deposited,and in a like manner,fills
ancient stream channels scoured into the underlying unit.
In the Blanding Basin the Glen Canyon Group consists of three formations which are,in
ascending order,the Wingate Sandstone,the Kayenta and the Navajo Sandstone.All are
conformable and their contacts are gradational.Commonly cropping out in sheer cliffs,the Late
Triassic Wingate Sandstone is typically composed of buff to reddish-brown,massive,cross-
bedded,well-sorted,fine-grained quartzose sandstone of eolian origin.Late Triassic (7)Kayenta
is fluvial in origin and consists of reddish-brown,irregularly to cross-bedded sandstone,shaly
sandstone and,locally,thin beds of limestone and conglomerate.Light yellowish-brown to light-
gray and white,massive,cross-bedded,friable,fine-to medium-grained quartzose sandstone
typifies the predominantly eolian Jurassic and Triassic (7)Navajo Sandstone.
Four formations of the Middle to Late Jurassic San Rafael Group unconformably overly the
Navajo Sandstone.These strata are composed of alternating marine and non-marine sandstones,
shales and mudstones.In ascending order,the formations are the Carmel formation,Entrada
Sandstone,Summerville formation,and Bluff Sandstone.The Carmel usually crops out as a
bench between the Navajo and Entrada Sandstones.Typically reddish-brown muddy sandstone
and sandy mudstone,the Carmel locally contains thin beds of brown to gray limestone and
reddish-to greenish-gray shale.Predominantly eolian in origin,the Entrada is a massive cross-
bedded fine-to medium-grained sandstone ranging in color from reddish-brown to grayish-white
that crops out in cliffs or hummocky slopes.The Summerville is composed of regular thin-
bedded,ripple-marked,reddish-brown muddy sandstone and sandy shale of marine origin and
forms steep to gentle slopes above the Entrada.Cliff-forming Bluff Sandstone is present only in
the southern part of the Monticello district thinning northward and pinching out near Blanding.
It is a white to grayish-brown,massive,cross-bedded eolian sandstone.
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In the southeastern Utah region the Late Jurassic Morrison formation has been divided in
ascending order into the Salt Wash,Recapture,Westwater Canyon,and Brushy Basin Members.
In general,these strata are dominantly fluvial in origin but do contain lacustrine sediments.Both
the Salt Wash and Recapture consist of alternating mudstone and sandstone;the Westwater
Canyon is chiefly sandstone with some sandy mudstone and claystone lenses,and the
heterogenous Brushy Basin consists of variegated bentonitic mudstone and siltstone containing
scattered thin limestone,sandstone,and conglomerate lenses.As strata of the Morrison
formation are the oldest rocks exposed in the Mill area vicinity and are one of the two principal
uranium-bearing formations in southeast Utah,the Morrison,as well as younger rocks,are
described in more detail in Section 1.6.2.2.
The Early Cretaceous Burro Canyon formation rests unconformably (?)on the underlying
Brushy Basin Member of the Morrison formation.Most of the Burro Canyon consists of light-
colored,massive,cross-bedded fluvial conglomerate,conglomerate sandstone and sandstone.
Most of the conglomerates are near the base.Thin,even-bedded,light-green mudstones are
included in the formation and light-grey thin-bedded limestones are sometimes locally
interbedded with the mudstones near the top of the formation.
Overlying the Burro Canyon is the Dakota Sandstone of Upper Cretaceous age.Typical Dakota
is dominantly yellowish-brown to light-gray,thick-bedded,quartzitic sandstone and
conglomeratic sandstone with subordinate thin lenticular beds of mudstone,gray carbonaceous
shale and,locally,thin seams of impure coal.The contact with the underlying Burro Canyon is
unconformable whereas the contact with the overlying Mancos Shale is gradational from the
light-colored sandstones to dark-grey to black shaly siltstone and shale.
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Upper Cretaceous Mancos Shale is exposed in the region surrounding the project vicinity but not
within it.Where exposed and weathered,the shale is light-gray or yellowish-gray,but is dark,to
olive-gray where fresh.Bedding is thin and well developed;much of it is laminated.
Quaternary alluvium within the project vicinity is of three types:alluvial silt,sand and gravels
deposited in the stream channels;colluvium deposits of slope wash,talus,rock rubble and large
displaced blocks on slopes below cliff faces and outcrops of resistant rock;and alluvial and
windblown deposits of silt and sand,partially reworked by water,on benches and broad upland
surfaces.
1.6.1.3 Structure and Tectonics (1978 ER Section 2.4.1.3)
According to Shoemaker (1954 and 1956),structural features within the Canyon Lands of
southeastern Utah may be classified into three main categories on the basis of origin or
mechanism of the stress that created the structure.These three categories are:(1)structures
related to large-scale regional uplifting or downwarping (epeirogenic deformation)directly
related to movements in the basement complex (Monument Uplift and the Blanding Basin);(2)
structures resulting from the plastic deformation of thick sequences of evaporite deposits,salt
plugs and salt anticlines,where the structural expression at the surface is not reflected in the
basement complex (Paradox Fold and Fault Belt);and (3)structures that are formed in direct
response to stresses induced by magmatic intrusion including local laccolithic domes,dikes and
stocks (Abajo Mountains).
Each of the basins and uplifts within the Mill area region is an asymmetric fold usually separated
by a steeply dipping sinuous monocline.Dips of the sedimentary beds in the basins and uplifts
rarely exceed a few degrees except along the monocline (Shoemaker,1956)where,in some
instances,the beds are nearly vertical.Along the Comb Ridge monocline,the boundary between
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the Monument Uplift and the Blanding Basin,approximately eight miles (12.9 kilometers)west
of the Mill area,dips in the Upper Triassic Wingate sandstone and in the Chinle formation are
more than 40 degrees to the east.
Structures in the crystalline basement complex in the central Colorado Plateau are relatively
unknown but where monoclines can be followed in Precambrian rocks they pass into steeply
dipping faults.It is probable that the large monoclines in the Canyon Lands section are related to
flexure of the layered sedimentary rocks under tangential compression over nearly vertical
normal or high-angle reverse faults in the more rigid Precambrian basement rocks (Kelley,1955;
Shoemaker,1956;Johnson and Thordarson,1966).
The Monument Uplift is a north-trending,elongated,upwarped structure approximately 90 miles
(145 kilometers)long and nearly 35 miles (56 kilometers)wide.Structural relief is about 3,000
feet (914 meters)(Kelley,1955).Its broad crest is slightly convex to the east where the Comb
Ridge monocline defines the eastern boundary.The uniform and gently descending western
flank of the uplift crosses the White Canyon slope and merges into the Henry Basin (Figure 1.6-
1).
East of the Monument Uplift,the relatively equidimensional Blanding Basin merges almost
imperceptibly with the Paradox Fold and Fault Belt to the north,the Four Corners Platform to the
southeast and the Defiance Uplift to the south.The basin is a shallow feature with
approximately 700 feet (213 meters)of structural relief as estimated on top of the Upper Triassic
Chinle formation by Kelley (1955),and is roughly 40 to 50 miles (64 to 80 kilometers)across.
Gentle folds within the basin trend westerly to northwesterly in contrast to the distinct northerly
orientation of the Monument Uplift.
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Situated to the north of the Monument Uplift and Blanding Basin is the most unique structural
feature of the Canyon Lands section,the Paradox Fold and Fault Belt.This tectonic unit is
dominated by northwest trending anticlinal folds and associated normal faults covering an area
about 150 miles (241 kilometers)long and 65 miles (104 kilometers)wide.These anticlinal
structures are associated with salt flowage from the Pennsylvanian Paradox Member of the
Hermosa formation and some show piercement of the overlying younger sedimentary beds by
plug-like salt intrusions (Johnson and Thordarson,1966).Prominent valleys have been eroded
along the crests of the anticlines where salt piercements have occurred or collapses of the central
parts have resulted in intricate systems of step-faults and grabens along the anticlinal crests and
flanks.
The Abajo Mountains are located approximately 20 miles (32 kilometers)north of the Mill area
on the more-or-less arbitrary border of the Blanding Basin and the Paradox Fold and Fault Belt
(Figure 1.6-1).These mountains are laccolithic domes that have been intruded into and through
the sedimentary rocks by several stocks (Witkind,1964).At least 31 laccoliths have been
identified.The youngest sedimentary rocks that have been intruded are those of Mancos Shale
of Late Cretaceous age.Based on this and other vague and inconclusive evidence,Witkind
(1964),has assigned the age of these intrusions to the Late Cretaceous or early Eocene.
Nearly all known faults in the region of the Mill area are high-angle normal faults with
displacements on the order of 300 feet (91 meters)or less (Johnson and Thordarson,1966).The
largest known faults within a 40-mile (64 kilometer)radius around Blanding are associated with
the Shay graben on the north side of the Abajo Mountains and the Verdure graben on the south
side.Respectively,these faults trend northeasterly and easterly and can be traced for
approximate distances ranging from 21 to 34 miles (34 to 55 kilometers)according to Witkind
(1964).Maximum displacements reported by Witkind on any of the faults is 320 feet (98
meters).Because of the extensions of Shay and Verdure fault systems beyond the Abajo
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Mountains and other geologic evidence,the age of these faults IS Late Cretaceous or post-
Cretaceous and antedate the laccolithic intrusions (Witkind,1964).
A prominent group of faults is associated with the salt anticlines in the Paradox Fold and Fault
Belt.These faults trend northwesterly parallel to the anticlines and are related to the salt
emplacement.Quite likely,these faults are relief features due to salt intrusion or salt removal by
solution (Thompson,1967).Two faults in this region,the Lisbon Valley fault associated with
the Lisbon Valley salt anticline and the Moab fault at the southeast end of the Moab anticline
have maximum vertical displacements of at least 5,000 feet (l,524 meters)and 2,000 feet (609
meters),respectively,and are probably associated with breaks in the Precambrian basement
crystalline complex.It is possible that zones of weakness in the basement rocks represented by
faults of this magnitude may be responsible for the beginning of salt flowage in the salt
anticlines,and subsequent solution and removal of the salt by groundwater caused collapse
within the salt anticlines resulting in the formation of grabens and local complex block faults
(Johnson and Thordarson,1966).
The longest faults in the Colorado Plateau are located some 155 to 210 miles (249 to 338
kilometers)west of the Mill area along the western margin of the High Plateau section.These
faults have a north to northeast echelon trend,are nearly vertical and downthrown on the west in
most places.Major faults included in this group are the Hurrican,Toroweap-Sevier,
Paunsaugunt,and Paradise faults.The longest fault,the Toroweap-Sevier,can be traced for
about 240 miles (386 kilometers)and may have as much as 3,000 feet (914 meters)of
displacement (Kelley,1955).
From the later part of the Precambrian until the middle Paleozoic the Colorado Plateau was a
relatively stable tectonic unit undergoing gentle epeirogenic uplifting and downwarping during
which seas transgressed and regressed,depositing and then partially removing layers of
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sedimentary materials.This period of stability was interrupted by northeast-southwest tangential
compression that began sometime during late Mississippian or early Pennsylvanian and
continued intermittently into the Triassic.Buckling along the northeast margins of the shelf
produced northwest-trending uplifts,the most prominent of which are the Uncompahgre and San
Juan Uplifts,sometimes referred to as the Ancestral Rocky Mountains.Clearly,these positive
features are the earliest marked tectonic controls that may have guided many of the later
Laramide structures (Kelley,1955).
Subsidence of the area southwest of the Uncompahgre Uplift throughout most of the
Pennsylvanian led to the filling of the newly formed basin with an extremely thick sequence of
evaporites and associated interbeds which comprise the Paradox Member of the Hermosa
formation (Kelley,1956).Following Paradox deposition,continental and marine sediments
buried the evaporite sequence as epeirogenic movements shifted shallow seas across the region
during the Jurassic,Triassic and much of the Cretaceous.The area underlain by the Paradox
Member in eastern Utah and western Colorado is commonly referred to as the Paradox Basin
(Figure 1.6-1).Renewed compression during the Permian initiated the salt anticlines and
piercements,and salt flowage continued through the Triassic.
The Laramide orogeny,lasting from Late Cretaceous through Eocene time,consisted of deep-
seated compressional and local vertical stresses.The orogeny is responsible for a north-south to
northwest trend in the tectonic fabric of the region and created most of the principal basins and
uplifts in the eastern-half of the Colorado Plateau (Grose,1972;Kelley,1955).
Post-Laramide epeirogenic deformation has occurred throughout the Tertiary;Eocene strata are
flexed sharply in the Grand Hogback monocline,fine-grained Pliocene deposits are tilted on the
flanks of the Defiance Uplift,and Pleistocene deposits in Fisher Valley contain three angular
unconformaties (Shoemaker,1956).
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1.6.2 Blanding Site Geology
The following descriptions of physiography and topography;rock units;structure;relationship of
earthquakes to tectonic structure;and potential earthquake hazards to the Mill area are
reproduced from the 1978 ER for ease of reference and as a review of the Mill site geology.(See
Figure 1.6-2)
1.6.2.1 Physiography and Topography (1978 ER Section 2.4.2.1)
The Mill site is located near the center of White Mesa,one of the many finger-like north-south
trending mesas that make up the Great Sage Plain.The nearly flat upland surface of White Mesa
is underlain by resistant sandstone caprock which forms steep prominent cliffs separating the
upland from deeply entrenched intermittent stream courses on the east,south and west.
Surface elevations across the Mill site range from about 5,550 to 5,650 feet (1,692 to 1,722
meters)and the gently rolling surface slopes to the south at a rate of approximately 60 feet per
mile (18 meters per 1.6 kilometer).
SECTOI.RPT\November2009
3000 0 3000 11000
wseba c::::::J I
SCALE IN FEET
FIGURE 1.6-2
WHITE MESA MILLSITE
GEOLOGY OF SURROUNDING AREA
Denison Mines (USA)Corp.OENISO.J)~J
MINES
rOJect:WHIT M SA MILL
County:SanJuan
N.
DAKOTA AND BURRO'CANYON
FORMATIONS (UNDIFFERENTIATED)
MORRISON FORMA nON:
BRUSHY BASIN MEMBER
WESTWATER CANYON MEMBER"
MANCOS SHALE
CONTACT.DASHED WHERE
APPROXIMATE .
RECAPTURE MEMBER
Jmb
EXPLANATION
Qae LOESS
Jmr
Jmw·
Kdb
I~fL.-.L.Da_le:~N~rN;;.;.2009~_...Des_tg_n:...Dr_an_ed_8y,.;:R,;;,;AH~..
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Maximum relief between the mesa's surface and Cottonwood Canyon on the west is about 750
feet (229 meters)where Westwater Creek joins Cottonwood Wash.These two streams and their
tributaries drain the west and south sides of White Mesa.Drainage on the east is provided by
Recapture Creek and its tributaries.Both Cottonwood Wash and Recapture Creeks are normally
intermittent streams and flow south to the San Juan River.However,Cottonwood Wash has
been known to flow perennially in the project vicinity during wet years.
1.6.2.2 Rock Units (1978 ER Section 2.4.2.2)
Only rocks of Jurassic and Cretaceous ages are exposed in the vicinity of the Mill site.These
include,in ascending order,the Upper Jurassic Salt Wash,Recapture,Westwater Canyon,and
Brushy Basin Members of the Morrison formation;the Lower Cretaceous Burro Canyon
formation;and the Upper Cretaceous Dakota Sandstone.The Upper Cretaceous Mancos Shale is
exposed as isolated remnants along the rim of Recapture Creek valley several miles southeast of
the Mill site and on the eastern flanks of the Abajo Mountains some 20 miles (32 kilometers)
north but is not exposed at the Mill site.However,patches of Mancos Shale may be present
within the Mill site boundaries as isolated buried remnants that are obscured by a mantle of
alluvial windblown silt and sand.
The Morrison formation is of particular economic importance in southeast Utah since several
hundred uranium deposits have been discovered in the basal Salt Wash Member (Stokes,1967).
In most of eastern Utah,the Salt Wash Member underlies the Brushy Basin.However,just south
of Blanding in the project vicinity the Recapture Member replaces an upper portion of the Salt
Wash and the Westwater Canyon Member replaces a lower part of the Brushy Basin.A southern
limit of Salt Wash deposition and a northern limit of Westwater Canyon deposition has been
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recognized by Haynes et al.(1972)in Westwater Canyon approximately three to six miles (4.8 to
9.7 kilometers),respectively,northwest of the Mill site.However,good exposures of Salt Wash
are found throughout the Montezuma Canyon area 13 miles (21 kilometers)to the east.
The Salt Wash Member is composed dominantly of fluvial fine-grained to conglomeratic
sandstones,and interbedded mudstones.Sandstone intervals are usually yellowish-brown to pale
reddish-brown while the mudstones are greenish-and reddish-gray.Carbonaceous materials
("trash")vary from sparse to abundant.Cliff-forming massive sandstone and conglomeratic
sandstone in discontinuous beds make up to 50 percent or more of the member.According to
Craig et al.(1955),the Salt Wash was deposited by a system of braided streams flowing
generally east and northeast.Most of the uranium-vanadium deposits are located in the basal
sandstones and conglomeratic sandstones that fill stream-cut scour channels in the underlying
Bluff Sandstone,or where the Bluff Sandstone has been removed by pre-Morrison erosion,in
similar channels cut in the Summerville formation.Mapped thicknesses of this member range
from zero to approximately 350 feet (0-107 meters)in southeast Utah.Because the Salt Wash
pinches out in a southerly direction in Recapture Creek three miles (4.8 kilometers)northwest of
the Mill site and does not reappear until exposed in Montezuma Canyon,it is not known for
certain that the Salt Wash actually underlies the site.
The Recapture Member is typically composed of interbedded reddish-gray,white,and light-
brown fine-to medium-grained sandstone and reddish-gray,silty and sandy claystone.Bedding
is gently to sharply lenticular.Just north of the Mill site,the Recapture intertongues with and
grades into the Salt Wash and the contact between the two cannot be easily recognized.A few
spotty occurrences of uriniferous mineralization are found in sandstone lenses in the southern
part of the Monticello district and larger deposits are known in a conglomeratic sandstone facies
some 75 to 100 miles (121 to 161 kilometers)southeast of the Monticello district.Since
significant ore deposits have not been found in extensive outcrops in more favorable areas,the
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Recapture is believed not to contain potential resources in the Mill site (Johnson and Thordarson,
1966).
Just north of the Mill site,the Westwater Canyon Member intertongues with and grades into the
lower part of the overlying Brushy Basin Member.Exposures of the Westwater Canyon in
Cottonwood Wash are typically composed of interbedded yellowish-and greenish-gray to
pinkish-gray,lenticular,fine-to coarse-grained arkosic sandstone and minor amounts of
greenish-gray to reddish-brown sandy shale and mudstone.Like the Salt Wash,the Westwater
Canyon Member is fluvial in origin,having been deposited by streams flowing north and
northwest,coalescing with streams from the southwest depositing the upper part of the Salt
Wash and the lower part of the Brushy Basin (Huff and Lesure,1965).Several small and
scattered uranium deposits in the Westwater Canyon are located in the extreme southern end of
the Monticello district.Both the Recapture Member and the Westwater Canyon contain only
traces of carbonaceous materials,are believed to be less favorable host rocks for uranium
deposition (Johnson and Thordarson,1966)and have very little potential for producing uranium
reserves.
The lower part of the Brushy Basin is replaced by the Westwater Canyon Member in the
Blanding area but the upper part of the Brushy Basin overlies this member.Composition of the
Brushy Basin is dominantly variegated bentonitic mudstone and siltstone.Bedding is thin and
regular and usually distinguished by color variations of gray,pale-green,reddish-brown,pale
purple,and maroon.Scattered lenticular thin beds of distinctive green and red chert-pebble
conglomeratic sandstone are found near the base of the member,some of which contain
uranium-vanadium mineralization in the southernmost part of the Monticello district (Haynes et
aI.,1972).Thin discontinuous beds of limestone and beds of grayish-red to greenish-black
siltstone of local extent suggest that much of the Brushy Basin is probably lacustrine in origin.
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For the most part,the Great Sage Plain owes its existence to the erosion of resistant sandstones
and conglomerates of the Lower Cretaceous Burro Canyon formation.This formation
unconformably(?)overlies the Brushy Basin and the contact is concealed over most of the Mill
area by talus blocks and slope wash.Massive,light-gray to light yellowish-brown sandstone,
conglomeratic sandstone and conglomerate comprise more than two-thirds of the formation's
thickness.The conglomerate and sandstone are interbedded and usually grade from one to the
other.However,most of the conglomerate is near the base.These rocks are massive cross-
bedded units formed by a series of interbedded lenses,each lens representing a scour filled with
stream-deposited sediments.In places the formation contains greenish-gray lenticular beds of
mudstone and claystone.Most of the Burro Canyon is exposed in the vertical cliffs separating
the relatively flat surface of White Mesa from the canyons to the west and east.In some places
the resistant basal sandstone beds of the overlying Dakota Sandstone are exposed at the top of
the cliffs,but entire cliffs of Burro Canyon are most common.Where the sandstones of the
Dakota rest on sandstones and conglomerates of the Burro Canyon,the contact between the two
is very difficult to identify and most investigators map the two formations as a single unit (Figure
1.6-2).At best,the contact can be defined as the top of a silicified zone in the upper part of the
Burro Canyon that appears to be remnants of an ancient soil that formed during a long period of
weathering prior to Dakota deposition (Huff and Lesure,1965).
The Upper Cretaceous Dakota Sandstone disconformably overlies the Burro Canyon formation.
Locally,the disconformity is marked by shallow depressions in the top of the Burro Canyon
filled with Dakota sediments containing angular to sub-rounded rock fragments probably derived
from Burro Canyon strata (Witkind,1964)but the contact is concealed at the Mill site.The
Dakota is composed predominantly of pale yellowish-brown to light gray,massive,intricately
cross-bedded,fine-to coarse-grained quartzose sandstone locally well-cemented with silica and
calcite;elsewhere it is weakly cemented and friable.Scattered throughout the sandstone are
lenses of conglomerate,dark-gray carbonaceous mudstones and shale and,in some instances,
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impure coal.In general,the lower part of the Dakota is more conglomeratic and contains more
cross-bedded sandstone than the upper part which in normally more thinly bedded and marine-
like in appearance.The basal sandstones and conglomerates are fluvial in origin,whereas the
carbonaceous mudstones and shales were probably deposited in back water areas behind beach
ridges in front of the advancing Late Cretaceous sea (Huff and Lesure,1965).The upper
sandstones probably represent littoral marine deposits since they grade upward into the dark-gray
siltstones and marine shales of the Mancos Shale.
The Mancos shale is not exposed in the project vicinity.The nearest exposures are small isolated
remnants resting conformably on Dakota Sandstone along the western rim above Recapture
Creek 4.3 to 5.5 miles (6.9 to 8.9 kilometers)southeast of the Mill site.Additional exposures are
found on the eastern and southern flanks of the Abajo Mountains approximately 16 to 20 miles
(26 to 32 kilometers)to the north.It is possible that thin patches of Mancos may be buried at the
Mill site but are obscured by the mantle of alluvial windblown silt and sand covering the upland
surface.The Upper Cretaceous Mancos shale is of marine origin and consists of dark-to olive-
gray shale with minor amounts of gray,fine-grained,thin-bedded to blocky limestone and
siltstone in the lower part of the formation.Bedding in the Mancos is thin and well developed,
and much of the shale is laminated.Where fresh,the shale is brittle and fissile and weathers to
chips that are light-to yellowish-gray.Topographic features formed by the Mancos are usually
subdued and commonly displayed by low rounded hills and gentle slopes.
A layer of Quaternary to Recent reddish-brown eolian silt and fine sand is spread over the
surface of the Mill site.Most of the loess consists of subangular to rounded frosted quartz grains
that are coated with iron oxide.Basically,the loess is massive and homogeneous,ranges in
thickness from a dust coating on the rocks that form the rim cliffs to more than 20 feet (6
meters),and is partially cemented with calcium carbonate (caliche)in light-colored mottled and
veined accumulations which probably represent ancient immature soil horizons.
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1.6.2.3 Structure (1978 ER Section 2.4.2.3)
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The geologic structure at the Mill site is comparatively simple.Strata of the underlying
Mesozoic sedimentary rocks are nearly horizontal;only slight undulations along the caprock
rims of the upland are perceptible and faulting is absent.In much of the area surrounding the
Mill site the dips are less than one degree.The prevailing regional dip is about one degree to the
south.The low dips and simple structure are in sharp contrast to the pronounced structural
features of the Comb Ridge Monocline to the west and the Abajo Mountains to the north.
The Mill area is within a relatively tectonically stable portion of the Colorado Plateau noted for
its scarcity of historical seismic events.The epicenters of historical earthquakes from 1853
through 1986 within a 200-mile (320 km)radius of the site are shown in Figure 1.6-3.More than
1,146 events have occurred in the area,of which at least 45 were damaging;that is,having an
intensity of VI or greater on the Modified Mercalli Scale.A description of the Modified
Mercalli Scale is given in Table 1.6-3.All intensities mentioned herein refer to this table.Table
1.6-3 also shows a generalized relationship between Mercalli intensities and other parameters to
which this review will refer.Since these relationships are frequently site specific,the table
values should be used only for approximation and understanding.Conversely,the border
between the Colorado Plateau and the Basin and Range Province and Middle Rocky Mountain
SECT01.RPTINovember 2009
11~110W 108W
NATIONAL GEOPHYSICAL DATACENTER /NOAA BOULDER,CO 80303
IDrohedBy:RAH
JNTENSlTIES
I-IV •V •
vn a
IX II
FIGURE 1.6-3
SEISMICITY WITHIN 320 KM
OF THE WHITE MESA MILL
108W
Denison Mines (USA)Corp.OENI50NI)~J
MINES
County:San Juan Iblale:Ulah
Dale:Nov.2009 IDesign:
PrOJect:WHITE MESA MILL
now
1146 EAR.11iQUAXBS PLO'rI'ED
NO INTENSlTY OR.MAGNmJDR T
112W
MAGNITUDES
<4.0 •
'.0 e·
.6.0 9
7.0 e
-Q).~~
I.!l!a.
J~I~~I~~:;:........._............__,."".......__-..1
TABLE 1.6-3
Modified Mercalli Scale,1956 Versiona
Intensity
M§I.
3 II.
III.
IV.
4
V.
Effects
Not felt.Marginal and long-period effects oflarge earthquakes (for details see text).
Felt by persons at rest on upper floors,or favorably placed.
Felt indoors.Hanging objects swing.Vibration like passing of light tl1lcks.Duration
estimated.May not be recognized as an earthquake.
Hanging objects swing.Vibration like passing ofheavy trucks or sensation ofajolt like a heavy
ball striking the walls.Standing motor cars rock.Windows,dishes,doors rattle.Glasses
clinic Crockery clashes.In the upper range of IV wooden walls and frame creak.
Felt outdoors:direction estimated.Sleepers wakened.Liquids disturbed.Some spilled.
Small unstable objects displaced orupset.Doors swing close,open.Shutters,pictures move.
Pendulum clocks stop,start,change rate.
v.'i-cm/s
1-3
0.0035-0.007
0.007-0.015
0.015-0.035
5
6
7
VI.
VII.
VIII.
IX.
Felt by all.Many frightened and run outdoors.Persons walle unsteadily.Windows,dishes,
glassware broken.Knickknacks,books,etc.offshelves.Pictures offwalls.Fumiture moved
or overtumed.Weak plasterand masonry 0 cracked.Small bells ring (church,school).
Trces,bushes shaken (visibly,orheard to I1lstle -CFR).
Difficultto stand.Noticed by drivers of motor cars.Hanging objects quiver.Furniture
broken.Damage to masonry 0 including cracks.Weak chimneys broken at roof line.Fall of
plaster,loose bricks,stones,tiles,comices (also unbraced parapets and architectural omaments -
CFR).Some cracks in masonry C.Waves on ponds:water turbid with mud.Small slides
and caving in along sand or gravel banks.Large bells ring.Concrete irrigation ditches
damaged.
Steering ofmotorcars affected.Damage to masonry C;partial collapse.Some damage to
masonry B;none is masonry A.Fall ofstucco and some masonry walls.Twisting,fall of
chimneys,factory stacks,monuments,towers,elevated tanks.Frame houses moved on
foundations ifnot bolted down;loose panel walls thrown out.Decayed piling broken off.
Branches broken from trees.Changes in flow or temperature of springs and wells.Cracks in
wet ground and on steep slopes.
General panic.Masonry 0 destroyed,masonry C heavily damaged.Sometimes with complete
collapse,masol11'y B seriously damaged.(General damage to foundations -CFR).Frame
structures,ifnot bolted,shiftedofffoundations.Frames rocked.Serious damage to reservoirs.
Underground pipes broken.Conspicuous cracks in ground.In alluviated areas sand and mud
ejected,earthquake fountains,sand craters.
3-7
7-20
20-80
.80-200
0.035-0.07
0.07-0.15
0.15-0.35
0.35-0.7
8
X.Most masonry and frame structures destroyed with their foundations.Some well-built wooden
structures and bridges destroyed.Serious damage to dams,dikes,embankments.Large
landslides.Water thrown on banks ofcanals,rivers,lakes,etc.Sand and mud shifted
horizontallyon beaches and flat land.Rails bent slightly.
200-500 0.7-1.2
XI.
XII.
Rails bent greatly.Underground pipelines completely out ofservice.
Damage nearly total.Large rockmasses displaced.Lines ofsight and level distorted.Objects
thrown into the air.
>1.2
From Fig.I I.I4
Note:Masonry A,S,C,D.To avoid ambiguity oflanguage,the quality ofmasomy,brick or otherwise,is specified by the following lettering
(which has no connection with the conventional Class A,B,C construction).
Masonry A :Good workmanship,mortar,and design reinforced,especially laterally,and bound together by using steel,
concrete,etc.;designed to resist lateral forces.
Masonry B:Good workmanship and mortar;reinforced,but not designed to resist lateral forces.
Masonry C:Ordinary workmanship and mOitar;no extreme weaknesses such as non-ded-ia comers,but masonry is neither
reinforced nor designed against horizontal forces.
Masonry 0 :Week materials such as adobe,poor mortar,low standards ofworkmanship,week horizontally.
'From Richter (1958).IAdapted with permission ofW.H.Freeman and Company by Hunt (1984).
-rAverage peak ground velocity,cm/s.
:j:Average peak acceleration (away from source).
§Magnitude cOll'elation.
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Province some 155 to 240 miles (249 to 386 km)west and northwest,respectively,from the site
is one of the most active seismic belts in the western United States.
Only 63 non-duplicative epicenters have been recorded within a 120 mile (200 km)radius of the
Mill area (Figure 1.6-4).Of these,50 had an intensity IV or less (or unrecorded)and two were
recorded as intensity VI.The nearest event occurred in the Glen Canyon National Recreation
Area approximately 38 miles (63 km)west-northwest of the Mill area.The next closest event
occurred approximately 53 miles (88 km)to the northeast.Just east of Durango,Colorado,
approximately 99 miles (159 km)due east of the Mill area,an event having local intensity of V
was recorded on August 29,1941 (Hadsell,1968).It is very doubtful that these events would
have been felt in the vicinity of Blanding.
Three of the most damaging earthquakes associated with the seismic belt along the Colorado
Plateau's western border have occurred in the Elsinore-Richfield are about 168 miles (270 km)
northwest of the Mill site.All were of intensity VIII.On November 13,1901,a strong shock
caused extensive damage from Richfield to Parowan.Many brick structures were damaged;
rockslides were reported near Beaver.Earthquakes with the ejection of sand and water were
reported,and some creeks increased their flow.Aftershocks continued for several weeks (von
Hake,1977).Following several weeks of small foreshocks,a strong earthquake caused major
damage in the Monroe-Elsinore-Richfield area on September 29,1921.Scores of chimneys were
thrown down,plaster fell from ceilings,and a section of a new two-story brick wall collapsed at
Elsinore's schoolhouse.Two days later,on October 1,1921,another strong tremor caused
additional damage to the area's structures.Large rockfalls occurred along both sides of the
Sevier Valley and hot springs were discolored by iron oxides (von Hake,1977).It is probable
SECTOI .RPTINovember2009
NATIONAL GEOPHYSICAL OATA CENTER I NOAA BOULDER,CO 80303
111W 110W 10DW ·108W
I I I I,
1 I I I
I 0 I c 1 Q I•"••3gN I---1;--GY 1 --I------3QHI0I0
I I"I T 1.13
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38N I---::---t --It---1-'"-a -38N"e •""~-:I ~1 *I•o·BLANDING •I 0 1 II •_..
I I "~.rl :
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I ,I I I
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36N ------ --I------36N
.I 1 I I
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I I I I -
111W now 10DW 108W
IPrOJect:WHITE MESA MILL
IDrahad By:RAH
IN'I'ENSrI'IES
I-IV •
V •
VII D
DC a
FIGURE 1.6-4
SEISMICITY WITHIN 200 KM
OF THE WHITE MESA MILL
.,
Denison Mines (USA)Corp.OENISOJ)~J
MINES
County:San Juan I :>Iale:Utah
Dale:Nov.2009 IDesign:
103 EAllTIlQUAXES PLO'I'TBD
NO INTENSITY OR MAGNITUDEMAGNITUDES
<4.0 0
S.O •
.6.0 9
7.0 "
"0"0Q)<;;"0
~,
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~~'".!.l~
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c.2~~a::~i::;~5~:>.,.;;:
1-91
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White Mesa Mill Reclamation Plan
that these shocks may have been perceptible at the Mill site but they certainly would not have
caused any damage.
Seven events of intensity VII have been reported within 320 kilometers (km)around Blanding,
Utah,which is the area shown in Figure 1.6-3.Of these,only two are considered to have any
significance with respect to the Mill site.On August 18,1912,an intensity VII shock damaged
houses in northern Arizona and was felt in Gallup,New Mexico,and southern Utah.Rock slides
occurred near the epicenter in the San Francisco Mountains and a 50-mile (80 km)earth crack
was reported north of the San Francisco Range (D.S.Geological Survey,1970).Nearly every
building in Dulce,New Mexico,was damaged to some degree when shook by a strong
earthquake on January 22,1966.Rockfalls and landslides occurred 10 to 15 miles (16 to 24 km)
west of Dulce along Highway 17 where cracks in the pavement were reported (Hermann et aI.,
1980).Both of these events may have been felt at the Mill site but,again,would certainly not
have caused any damage.Figure 1.6-4 shows the occurrence of seismic events within 200 km of
Blanding.
1.6.2.4 Relationship ofEarthquakes to Tectonic Structures
The majority of recorded earthquakes in Utah have occurred along an active belt of seismicity
that extends from the Gulf of California,through western Arizona,central Utah,and northward
into western British Columbia.The seismic belt is possibly a branch of the active rift system
associated with the landward extension of the East Pacific Rise (Cook and Smith,1967).This
belt is the Intermountain Seismic Belt shown in Figure 1.6-5 (Smith,1978).
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.t-··----.-.:
•200,
...
.......-
'.
Modified from Smith,1978
SHOWS RELATIONSHIP OF THE COLORADO
PLATEAU PROVINCE TO MARCANAl BELTS
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ale:UlahSanJuan
rOJecl:WHI A MILL
County:
FIGURE 1.6-5
SEISMICITY OF THE WESTERN UNITED STATES
1950 TO 1976
~~~A.rter Umstc.o.I~ee k------r.::-..,-------.===------I~L ..L.°a.,••:...;;:N;;:;:<JV;,.:i.2;;:::009:;;.._..Des_;GO.:..I.0.ratt.ed.By.:,;,;RA..H ..
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It is significant to note that the seismic belt forms the boundary zone between the Basin and
Range -Great Basin Provinces and the Colorado Plateau -Middle Rocky Mountain Provinces.
This block-faulted zone is about 47 to 62 miles (75 to 100 km)wide and forms a tectonic
transition zone between the relatively simple structures of the Colorado Plateau and the complex
fault-controlled structures of the Basin and Range Province (Cook and Smith,1967).
Another zone of seismic activity is in the vicinity of Dulce,New Mexico,near the Colorado
border.This zone,which coincides with an extensive series of tertiary intrusives,may also be
related to the northern end of the Rio Grande Rift.This rift is a series of fault-controlled
structural depressions extending southward from southern Colorado through central New Mexico
and into Mexico.The rift is shown on Figure 1.6-5 trending north-south to the east of the Mill
area.
Most of the events south of the Utah border of intensity V and greater are located within 50 miles
(80 km)of post-Oligocene extrusives.This relationship is not surprising because it has been
observed in many other parts of the world (Hadsell,1968).
In Colorado,the Rio Grande Rift zone is one of three siesmotectonic provinces that may
contribute energy to the study area.Prominent physiographic expression of the rift includes the
San Luis Valley in southern Colorado.The valley is a half-graben structure with major faulting
on the eastern flank.Extensional tectonics is dominant in the area and very large earthquakes
with recurrence intervals of several thousand years have been projected (Kirkham and Rodgers,
1981).Mountainous areas to the west of the Rio Grande rift province include the San Juan
Mountains.These mountains are a complex domicil uplift with extensive Oligocene and
Miocene volcanic cover.Many faults are associated with the collapse of the calderas and
apparently have not moved since.Faults of Neogene age exist in the eastern San Juan Mountains
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that may be related to the extension of the Rio Grande rift.Numerous small earthquakes have
been felt or recorded in the western mountainous province despite an absence of major Neogene
tectonic faults (Kirkham and Rodgers,1981).
The third seismotectonic province in Colorado,that of the Colorado Plateau,extends into the
surrounding states to the west and south.In Colorado,the major tectonic element that has been
recurrently active in the Quaternary is the Uncompahgre uplift.Both flanks are faulted and
earthquakes have been felt in the area.The faults associated with the Salt Anticlines are
collapsed features produced by evaporite solution and flowage (Cater,1970).Their non-tectonic
origin and the plastic deformation of the salt reduces their potential for generating even
moderate-sized earthquakes (Kirkham and Rodgers,1981).
Case and Joesting (1972)have called attention to the fact that regional seismicity of the Colorado
Plateau includes a component added by basement faulting.They inferred a basement fault
trending northeast along the axis of the Colorado River through Canyonlands.This basement
faulting may be part of the much larger structure that Hite (1975)examined and Warner (1978)
named the Colorado lineament (Figure 1.6-6).This 1,300-mile (2,100 km)long lineament that
extends from northern Arizona to Minnesota is suggested to be a Precambrian wrench-fault
system formed some 2.0 to 1.7 billion years before present.While it has been suggested that the
Colorado lineament is a source zone for larger earthquakes (m =4 to 6)in the west-central
United States,the observed spatial relationship between epicenters and the trace of the lineament
does not prove a casual relation (Brill and Nuttli,1983).In terms of contemporary seismicity,
the lineament does not act as a uniform earthquake generator.Only specific portions of the
proposed structure can presently be considered seismic source zones and each segment exhibits
seismicity of distinctive activity and character (Wong,1981).This is a reflection of the different
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SOURCE:WARNER,1978
OrahedBy:RAHDesign:
FIGURE 1.6-6
COLORADO LINEAMENT
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~i!£~~c.~
i
i~J'l::J;i;
~~....._--------------_....._,;,;;;;,,;,;,;;.........._--_..........---_..
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orientations and magnitudes of the stress fields along the lineament.The interior of the Colorado
Plateau forms a tectonic stress province,as defined by Zoback and Zoback (1980),that is
characterized by generally east-west tectonic compression.Only where extensional stresses from
the Basin and Range province of the Rio Grande rift extend into the Colorado Plateau would the
Colorado lineament in the local area be suspected of having the capability of generating a large
magnitude earthquake (Wong,1984).At the present time,the well defined surface expression of
regional extension is far to the west and far to the east of the Mill area.
Recent work by Wong (1984)has helped define the seismicity of the whole Colorado Plateau.
He called attention to the low level (less than ML =3.6)but high number (30)of earthquakes in
the Capitol Reef Area from 1978 to 1980 that were associated with the Waterpocket fold and the
Cainville monocline,two other major tectonic features of the Colorado Plateau.Only five
earthquakes in the sequence were of ML greater than 3,and fault plane solutions suggest the
swarm was produced by normal faulting along northwest-trending Precambrian basement
structures (Wong,1984).The significance of the Capitol Reef seismicity is its relatively isolated
occurrence within the Colorado Plateau and its location at a geometric barrier in the regional
stress field (Aki,1979).Stress concentration that produces earthquakes at bends or junctures of
basement faults as indicated by this swarm may be expected to occur at other locations in the
Colorado Plateau Province.No inference that earthquakes such as those at Capitol Reef are
precursors for larger subsequent events is implied.
1.6.2.5 Potential Earthquake Hazards to Mill Area
The Mill site is located in a region known for its scarcity of recorded seismic events.Although
the seismic history for this region is barely 135 years old,the epicentral pattern,or fabric,is
basically set and appreciable changes are not expected to occur.Most of the larger seismic
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events in the Colorado Plateau have occurred along its margins rather than in the interior central
region.Based on the region's seismic history,the probability of a major damaging earthquake
occurring at or near the Mill site is very remote.Studies by Algermissen and Perkins (1976)
indicate that southeastern Utah,including the site,is in an area where there is a 90 percent
probability that a horizontal acceleration of four percent gravity (0.04g)would not be exceeded
within 50 years.
Minor earthquakes,not associated with any seismic-tectonic trends,can presumably occur
randomly at almost any location.Even if such an event with an intensity as high as VI should
occur at or near the Mill site,horizontal ground accelerations would not exceed 0.10g but would
probably range between 0.05 and 0.09g (Coulter et al.,1973;Trifunac and Brady,1975).These
magnitudes of ground motion would not pose significant hazards to the existing and proposed
facilities at the Mill site.
1.6.3 Seismic Risk Assessment
In addition to general estimates of earthquake hazards,such as those offered by Dames and
Moore (1978b),and summarized above,a more detailed analysis of the relationship between the
Mill area and regional seismicity was performed.As can be seen in Figure 1.6-3,a map based
on the seismologic data base from the National Geophysical Data Center of the National Oceanic
and Atmospheric Administration (NOAA 1988),many events occur within the Intermountain
Seismic Belt and within the Rio Grande rift.Since the Colorado Plateau Province (and
particularly the Blanding basin portion,in which the Mill site lies)is a distinctly different
tectonic province,the historical sample chosen for magnitude/frequency estimates was limited to
a radius of about 120 miles (200 km)from the project.This sample included a region which is
more representative of the seismicity of the Colorado Plateau.
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Static and pseudostatic analyses were performed to establish the stability of the side slopes of the
tailings soil cover.These analyses,together with analyses of radon flux attenuation,infiltration,
freeze/thaw effects,and erosion protection,are summarized below,and are detailed in previously
submitted Appendix D,the Tailings Cover Design report (Titan,1996).
The side slopes are designed at an angle of 5H:1V.Because the side slope along the southern
section of Ce114A is the longest and the ground elevation drops rapidly at its base,this slope was
determined to be critical and is thus the focus of the stability analyses.
The computer software package GSLOPE,developed by MITRE Software Corporation,was
used to determine the potential for slope failure.GSLOPE applies Bishop's Method of slices to
identify the critical failure surface and calculate a factor of safety (FOS).The slope geometry
and properties of the construction materials and bedrock are input into the model.These data
and drawings are included in the Stability Analysis of Side Slopes Calculation brief included as
Appendix G of the Tailings Cover Design report.For this analysis,competent bedrock is
designated at 10 feet below the lowest point of the foundation [i.e.,at a 5,540-foot elevation
above mean sea level (msl)].This is a conservative estimate,based on the borehole logs
supplied by Chen and Associates (1979),which indicate bedrock near the surface.
1.6.3.1 Static Analysis
For the static analysis,a Factor of Safety ("FOS")of 1.5 or more was used to indicate an
acceptable level of stability.The calculated FOS is 2.91,which indicates that the slope should
be stable under static conditions.Results of the computer model simulations are included in
Appendix G ofthe Tailings Cover Design report.
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1.6.3.2 Pseudostatic Analysis (Seismicity)
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The slope stability analysis described above was repeated under pseudostatic conditions in order
to estimate a FOS for the slope when a horizontal ground acceleration of 0.10g is applied.The
slope geometry and material properties used in this analysis are identical to those used in the
stability analysis.A FOS of 1.0 or more was used to indicate an acceptable level of stability
under pseudostatic conditions.The calculated FOS is 1.903,which indicates that the slope
should be stable under dynamic conditions.Details of the analysis and the simulation results are
included in Appendix G of the Tailings Cover Design report.
In June of 1994,Lawrence Livermore National Laboratory ("LLNL")(1994)published a report
on seismic activity in southern Utah,in which a horizontal ground acceleration of 0.12g was
proposed for the White Mesa site.The evaluations made by LLNL were conservative to account
for tectonically active regions that exist,for example,near Moab,Utah.Although,the LLNL
report states that "...[Blanding]is located in a region known for its scarcity of recorded seismic
events,"the stability of the cap design slopes using the LLNL factor was evaluated.The results
of a sensitivity analysis reveal that when considering a horizontal ground acceleration of O.l2g,
the calculated FOS is 1.778 which is still above the required value of 1.0,indicating adequate
safety under pseudostatic conditions.This analysis is also included in Appendix G of the
Tailings Cover Design report.
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1.7 Biota (1978 ER Section 2.9)
1.7.1 Terrestrial (1978 ER Section 2.9.1)
1.7.1.1 Flora (1978 ER Section 2.9.1.1)
The natural vegetation presently occurring within a 25-mile (40-km)radius of the site is very
similar to that of the potential,being characterized by pinyon-juniper woodland intergrading with
big sagebrush (Artemisia tridentata)communities.The pinyon-juniper community is dominated
by Utah juniper (Juniperus osteosperma)with occurrences of pinyon pine (Pinus edulis)as a
codominant or subdominant tree species.The understory of this community,which is usually
quite open,is composed of grasses,forbs,and shrubs that are also found in the big sagebrush
communities.Common associates include galleta grass (Hilaria jamesii),green ephedra
(Ephedra viridis),and broom snakewood (Gutierrezia sarothrae).The big sagebrush
communities occur in deep,well-drained soils on flat terrain,whereas the pinyon-juniper
woodland is usually found on shallow rocky soil of exposed canyon ridges and slopes.
Seven community types are present on the Mill site (Table 1.7-1 and Figure 1.7-1).Except for
the small portions of pinyon-juniper woodland and the big sagebrush community types,the
majority of the plant communities within the site boundary have been disturbed by past grazing
and/or treatments designed to improve the site for rangeland.These past treatments include
chaining,plowing,and reseeding with crested wheatgrass (Agropyron desertorum).Controlled
big sagebrush communities are those lands containing big sagebrush that have been chained to
stimulate grass production.In addition,these areas have been seeded with crested wheatgrass.
Both grassland communities I and II are the result of chaining and/or plowing and seeding with
crested wheatgrass.The reseeded grassland II community is in an earlier stage of recovery from
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disturbance than the reseeded grassland I community.The relative frequency,relative cover,
relative density,and importance values of species sampled in each community are presented in
Dames and Moore (1978b),Table 2.8-2.The percentage of vegetative cover in 1977 was lowest
on the reseeded grassland II community (10.7%)and highest on the big sagebrush community
(33%)(Table 1.7-2).
Based upon dry weight composition,most communities on the site were in poor range condition
in 1977 (Dames &Moore (1978),Tables 2.8-3 and 2.8-4).Pinyon-juniper,big sagebrush,and
controlled big sagebrush communities were in fair condition.However,precipitation for 1977 at
the Mill site was classed as drought conditions (Dames &Moore (1978b),Section 2.8.2.1).Until
July,no production was evident on the site.
Based on the work completed by Dames &Moore in the 1978 ER,no designated or proposed
endangered plant species occur on or near the Mill site (Dames &Moore (1978b),Section
2.8.2.1).Of the 65 proposed endangered species in Utah at that time,six have documented
distributions on San Juan County.A careful review of the habitat requirements and known
distributions of these species by Dames &Moore in the 1978 ER indicated that,because of the
disturbed environment,these species would probably not occur on the Mill site.The Navago
Sedge has been added to the list as a threatened species since the 1978 ER.
In completing the 2002 EA,NRC staff contacted wildlife biologists from the BLM and the Utah
Wildlife Service to gather local information on the occurrences of additional species surrounding
the Mill.In the 2002 EA,NRC staff concluded that the Navajo Sedge has not been observed in
the area surrounding Blanding,and is typically found in areas of moisture (2002 EA at 4).
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TABLE 1.7-1
Community Types and Expanse Within the Project site Boundary
Expanse
Community Type Ha Acres
Pinyon-juniper Woodland 5 13
Big Sagebrush 113 278
Reseeded Grassland I 177 438
Reseeded Grassland II 121 299
Tamarisk-salix 3 7
Controlled Big Sagebrush 230 569
Disturbed 17 41
TABLE 1.7-2
Ground Cover For Each Community Within the Project Site Boundary
Percentage of Each Type of Cover
Community Type Vegetative Cover Litter Bare Ground
Pinyon-juniper Woodlanda 25.9 15.6 55.6
Big Sagebrush 33.3 16.9 49.9
Reseeded Grassland I 15.2 24.2 61.0
Reseeded Grassland II 10.7 9.5 79.7
Tamarisk-salix 12.0 20.1 67.9
Controlled Big Sagebrush 17.3 15.3 67.4
Disturbed 13.2 7.0 80.0
aRock covered 4.4%of the ground.
..:,
~
II?~0of Dfij Pinyon -Juniperil:"<D~D Reseeded Grassland Ic:!ll0..
i D Reseeded Grassland II
!llal D<;Big Sagebrush~~D Controlled Big Sagebrush~i'l:::J D<{Disturbeden~:?:
N
s
2000 0 2000
~~~~I
SCALE IN FEET
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RE\IISKlNS o)OCt:W~ite Mesa n~1
Dale BY County:SanJ:JOO (SIse:Utan
11-()9 DLS LoCalloo:
FIGURE 1.7-1
VEGETATION COMMUNITYTYPES
ON THE WHITE MESA MILL SITE
rlJille Mav.1999 1stille 1"-8000
AUlflOC OrullxlBy.FlAH
1.7.1.2 Fauna (1978 ER Section 2.9.1.2)
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Wildlife data have been collected through four seasons at several locations on the site.The
presence of a species was based on direct observations,trappings and signs such as the
occurrence of scat,tracks,or burrows.A total of 174 vertebrate species potentially occur within
the vicinity of the mill (Dames &Moore (l978b),Appendix D,previously submitted),78 of
which were confirmed (Dames &Moore (l978b),Section 2.8.2.2).
Although seven species of amphibians are thought to occur in the area,the scarcity of surface
water limits the use of the site by amphibians.The tiger salamander (Ambystoma tigrinum)was
the only species observed.It appeared in the pinyon-juniper woodland west of the Mill site
(Dames &Moore (l978b),Section 2.8.2.2).
Eleven species of lizards and five snakes potentially occur in the area.Three species of lizards
were observed:the sagebrush lizard (Sceloparas graciosus),western whiptail (Cnemidophorus
tigris),and the short-horned lizard (Phrynosoma douglassi)(Dames &Moore (l978b),Section
2.8.2.2).The sagebrush and western whiptail lizard were found in sagebrush habitat,and the
short-horned lizard was observed in the grassland.No snakes were observed during the field
work.
Fifty-six species of birds were observed in the vicinity of the Mill site (Table 1.7-3).The
abundance of each species was estimated by using modified Emlen transects and roadside bird
counts in various habitats and seasons.Only four species were observed during the February
sampling.The most abundant species was the horned lark (Eremophila aepestis)followed by the
common raven (Corvus corax),which were both concentrated in the grassland.Avian counts
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TABLE 1.7-3
Birds Observed in the Vicinity ofthe White Mesa Project
Species Relative Abundance and Statusa Species Relative Abundance and Statusa
Mallard CP Pinyon Jay CP
Pintail CP Bushtit CP
Turkey Vulture US Bewick's Wren CP
Red-tailed Hawk CP Mockingbird US
Golden Eagle CP Mountain Bluebird CS
Marsh Hawk CP Black-tailed Gnatcatcher H
Merlin UW Ruby-crowned Kinglet CP
American Kestrel CP Loggerhead Shrike CS
Sage Grouse UP Starling CP
Scaled Quail Not Listed Yellow-rumped Warbler CS
American Coot CS Western Meadowlark CP
Killdeer CP Red-winged Blackbird CP
Spotted Sandpiper CS Brewer's Blackbird CP
Mourning Dove CS Brown-headed Cowbird CS
Common Nighthawk CS Blue Grosbeak CS
White-throated Swift CS House Finch CP
Yellow-bellied Sapsucker CP American Goldfinch CP
Western Kingbird CS Green-tailed Towhee CS
Ash-throated Flycatcher CS Rufous-sided Towhee CP
Say's Phoebe CS Lark Sparrow CS
Horned Lark CP Black-throated Sparrow CS
Violet-green Swallow CS Sage Sparrow UC
Barn Swallow CS Dark-eyed Junco CW
Cliff Swallow CS Chipping Sparrow CS
Scrub Jay CP Brewer's Sparrow CS
Black-billed Magpie CP White-crowned Sparrow CS
Common Raven CP Song Sparrow CP
Common Crow CW Vesper Sparrow CS
aW.H.Behle and M.L.Perry,Utah Birds,Utah Museum of Natural History,University ofUtah,Salt Lake City,1975.
Relative Abundance
C =Common
U=Uncommon
H =Hypothetical
Status
P =Permanent
S =Summer Resident
W =Winter Visitant
Source:Dames &Moore (1978b),Table 2.8-5
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increased drastically in May.Based on extrapolation of the Emlen transect data,the avian
density on grassland of the Mill site during spring was about 123 per 100 acres (305 per square
kilometer).Of these individuals,94 percent were horned larks and western meadowlarks
(Sturnella neglecta).This density and species composition are typical of rangeland habitats.In
late June the species diversity declined somewhat in grassland but peaked in all other habitats.
By October the overall diversity decreased but again remained the highest in grassland.
Raptors are prominent in the western United States.Five species were observed in the vicinity
of the site (Table 1.7-3).Although no nests of these species were located,all (except the golden
eagle,Aquila chrysaetos)have suitable nesting habitat in the vicinity of the site.The nest of a
prairie falcon (Falco mexicanus)was found about 3/4 mile (1.2 km)east of the site.Although no
sightings were made of this species,members tend to return to the same nests for several years if
undisturbed (Dames &Moore (1978b),Section 2.8.2.2).
Of several mammals that occupy the site,mule deer (Odocoileus hemionus)is the largest
species.The deer inhabit the project vicinity and adjacent canyons during winter to feed on the
sagebrush and have been observed migrating through the site to Murphy Point (Dames &Moore
(l978b),Section 2.8.2.2).Winter deer use of the project vicinity,as measured by browse
utilization,is among the heaviest in southeastern Utah [25 days of use per acre (61 days of use
per hectare)in the pinyon-juniper-sagebrush habitats in the vicinity of the Mill site].In addition,
this area is heavily used as a migration route by deer traveling to Murphy Point to winter.Daily
movement during winter periods by deer inhabiting the area has also been observed between
Westwater Creek and Murphy Point.The present size of the local deer herd is not known.
Other mammals present at the site include the coyote (Canis latrans),red fox (Vulpes vulpes),
gray fox (Urocyon cineroargenteus),striped skunk (Mephitis mephitis),badger (taxidea taxus),
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longtail weasel (Mustela frenata),and bobcat (Lynx rufus).Nine species of rodents were trapped
or observed on the site,the deer mouse (Peromyscus maniculatus)having the greatest
distribution and abundance.Although desert cottontails (Sylvilagus auduboni)were uncommon
in 1977,black-tailed jackrabbits (Lepus californicus)were seen during all seasons.
In the 2002 EA,NRC staff noted that,in the vicinity of the site,the U.S.Fish and Wildlife
Service had provided the list set out in Table 3.12-1,of the endangered,threatened,and
candidate species that may occur in the area around the site.
Table 1.7-4
Endangered,Threatened and Candidate Species in the Mill Area
Common Name Scientific Name Status
Navajo Sedge Carex specuicola Threatened
Bonytail Chub Gila elegans Endangered
Colorado Pikeminnow Ptychocheilus lucius Endangered
Humpback Chub Gila cypha Endangered
Razorback Sucker Xyrauchen texanus Endangered
Bald Eagle Haliaeetus leucocephalus Threatened
California Condor Gymnogyps californianus Endangered
Gunnison Sage Grouse Centrocercus minimus Candidate
Mexican Spotted Owl Strix occidentalis lucida Threatened
Southwestern Willow Flycatcher Empidonax traillii extimus Endangered
Western Yellow-billed Cuckoo Coccyzus americanus occidentalis Candidate
Black-footed Ferret Mustela nigripes Endangered
Source:2002 EA
The 2002 EA also noted that,in addition,the species listed on Table 3.12-2 may occur within the
Mill area that are managed under Conservation Agreements/Strategies.
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Table 1.7-5
Species Managed Under Conservation Agreements/Strategies at the Mill Area
Common Name Scientific Name
Colorado River Cutthroat Trout Oncorhynchus clarki pleuriticus
Gunnison Sage Grouse Centrocercus minimus
Source:2002 EA
For the 2002 EA,NRC staff contacted wildlife biologists from the BLM and the Utah Wildlife
Service to gather local information on the occurrences of these additional species surrounding
the Mill.NRC staff made the following conclusions (2002 EA p.4):
While the ranges of the bald eagle,peregnne falcon,and willow flycatcher
encompass the project area,their likelihood of utilizing the site is extremely low.
The black-footed ferret has not been seen in Utah since 1952,and is not expected
to occur any longer in the area.The California Condor has only rarely been
spotted in the area of Moab,Utah,(70 miles north)and around Lake Powell
(approximately 50 miles south).The Mexican Spotted Owl is only found in the
mountains in Utah,and is not expected to be on the Mesa.The Southwestern
Willow Flycatcher,Western Yellow-billed Cuckoo,and Gunnison Sage Grouse
are also not expected to be found in the immediate area around the Mill site.
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1.7.2 Aquatic Biota (1978 ER Section 2.9.2)
Aquatic habitat at the Mill site ranges temporally from extremely limited to nonexistent due to
the aridity,topography and soil characteristics of the region and consequent dearth of perennial
surface water.Two small stock watering ponds,are located on the Mill site a few hundred yards
from the ore pad area (See Figure 1.5-3 above).One additional small "wildlife pond",east of
Cell 4A,was completed in 1994 to serve as a diversionary feature for migrating waterfowl (see
Figure 1.5-3 above).Although more properly considered features of the terrestrial environment,
they essentially represent the total aquatic habitat on the Mill site.These ponds probably harbor
algae,insects,other invertebrate forms,and amphibians.
They also provide a water source for small mammals and birds.Similar ephemeral catch and
seepage basins are typical and numerous to the northeast of the Mill site and south of Blanding.
Aquatic habitat in the project vicinity is similarly limited.The three adjacent streams (Corral
Creek,Westwater Creek,and an unnamed arm of Cottonwood Wash)are only intermittently
active,carrying water primarily in the spring during increased rainfall and snowmelt runoff,in
the autumn,and briefly during localized but intense electrical storms.Intermittent water flow
most typically occurs in April,August,and October in those streams.Again,due to the
temporary nature of these steams,their contribution to the aquatic habitat of the region is
probably limited to providing a water source for wildlife and a temporary habitat for insect and
amphibian species.
In the 2002 EA,NRC staff concluded that (p.4)no populations of fish are present on the project
site,nor are any known to exist in the immediate area of the site.Four species of fish designated
as endangered or threatened (the Bonytail Chub,Colorado Pikeminnow,Humpback Chub and
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Razorback Sucker)occur in the San Juan River 18 miles south of the site,which Dames &
Moore noted in the 1978 ER (Section 2.8.2)is the closest habitat suitable for these species.NRC
staff further concluded that there are no discharges of Mill effluents to surface waters,and
therefore,no impacts are expected for the San Juan River due to operations of the Mill.
1.7.3 Background Radiation (2007 ER,Section 3.13.1)
All living things are continuously exposed to ionizing radiation from a variety of sources
including cosmic and cosmogenic radiation from space and external radiation from terrestrial
radionuclides such as uranium,thorium and potassium-40 that occur in the earth's crust,in
building materials,in the air we breathe,the food we eat,the water we drink and in our bodies.
Some exposures,such as that from potassium-40,are controlled by our body's metabolism and
are relatively constant throughout the world,but exposures from sources such as uranium and
thorium in soils and especially from radon in homes can vary greatly,by more than a factor of
ten,depending on location.
In order to provide a context for exposures potentially attributable to radioactive emissions from
processing ores and alternate feed materials at the Mill,this section provides some general
background information on exposures to natural background radiation worldwide,in the United
States and in the Colorado Plateau region where the Mill is located.
1.7.3.1 The World
In general terms,the worldwide breakdown of natural background radiation sources can be
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summarized as follows (UNSCEAR,2000):
Cosmic and Cosmogenic
Terrestrial
Inhaled (Radon)
Ingested
Total (Average)
39 mremlyr
48 mrem/yr
126 mremlyr
29 mrem /yr
242 mremlyr (116 mrem/yr excluding radon)
According to the United Nations Scientific Committee on the Effects of Atomic Radiation
("UNSCEAR"),the actual doses can vary considerably from the nominal values listed above,
and around the world vary from this value by more than a factor of 10.For example,the dose
from cosmic and cosmogenic radiation varies with altitude.The higher the altitude,the less is
the protection offered by the earth's atmosphere.The dose from external gamma radiation can
vary greatly depending on the levels of uranium and thorium series radionuclides in the local
soil.One example is the elevated gamma fields seen on natural sands containing heavy minerals
as for example in regions around the Indian Ocean,in Brazil,and New Jersey.The high
variability in indoor radon concentrations is a major source of the variation in natural
background dose.The variability in the dose from radon arises from many factors,including:
variability in soil radium concentrations from place to place;variation both over time and
location in housing stock,heating and ventilating systems;and variations in individual habits.
The worldwide average ambient (i.e.outdoor)radon concentration is about 10 Bq/m3
(UNSCEAR,2000)and the world average concentration of U-238 and Th-232 in soils is about
0.7 pCi/g (25 Bq/kg)(NRC,1994).
The definition of "background radiation"in 10 CFR 20.1003 specifically includes global fallout
as it exists in the environment from the testing of nuclear explosive devices or from past nuclear
accidents such as Chernobyl that contribute to background radiation and are not under the control
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of the licensee.The calculation of background radiation in this Section 3.13.1 is conservative
because it does not include such fallout in background radiation for the Mill site.
1.7.3.2 United States
In the United States,nominal average levels of natural background radiation are as follows
(National Council of Radiation Protection and Measurements ("NCRP"),1987):
Cosmic and Cosmogenic
Terrestrial
Inhaled (Radon)
Ingested
Total (Average)
28 mremlyr
28 mremlyr
200 mrem/yr
40 mrem/yr
296 mremiyr (96 mremiyr excluding radon)
As shown above,in the United States,the average annual dose from natural background
radiation is about 296 mremlyr (including radon).The actual annual dose from natural
background varies by region within the United States.For example,the average dose from
external terrestrial radiation for a person living on the Colorado Plateau is in the order of 63
Imemlyr,which is considerably higher than the average dose from terrestrial radiation for a
person living in Florida,where the average annual dose from external terrestrial radiation is only
about 16 mremlyr.(NRC,1994;NCRP,1987).No comparison made.In the United States,
outdoor radon levels vary widely from about 0.1 pCi/1 in New York City to about 1.2 pCiIL in
Colorado Springs (NCRP,1987),generally consistent with nominal worldwide values noted in
the previous section.
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1.7.4 Mill Site Background (1978 ER Section 2.10)
Radiation exposure in the natural environment is due to cosmic and terrestrial radiation and to
the inhalation of radon and its daughters.Measurements of the background environmental
radioactivity were made at the Mill site using thermoluinescent dosimeters ("TLDs").The
results indicate an average total body dose of 142 millirems per year,of which 68 millirems is
attributable to cosmic radiation and 74 millirems to terrestrial sources.The cosmogenic radiation
dose is estimated to be about 1 millirem per year.Terrestrial radiation originates from the
radionuclides potassium-40,rubidium-87,and daughter isotopes from the decay of uranium-238,
thorium-232,and,to a lesser extent,uranium-235.The dose from ingested radionuclides is
estimated at 18 millirems per year to the total body.The dose to the total body from all sources
of environmental radioactivity is estimated to be about 161 millirems per year.
The concentration of radon in the area is estimated to be in the range of 500 to 1,000 pCi/m3,
based on the concentration of radium-226 in the local soil.Exposure to this concentration on a
continuous basis would result in a dose of up to 625 millirems per year to the bronchial
epithelium.As ventilation decreases,the dose increases;for example,in unventilated enclosures,
the comparable dose might reach 1,200 millirems per year.
The medical total body dose for Utah is about 75 millirems per year per person.The total dose
in the area of the mill from natural background and medical exposure is estimated to be 236
millirems per year.
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1.7.5 Current Monitoring Data
The most recent data for gamma,vegetation,air and stack sampling,groundwater,surface water,
meteorological monitoring,and soil sampling discussed in the following sections are found in the
Semi-Annual Effluent Reports for January through June 2008,July through December 2008 and
January through June 2009,included as Appendix A.See Section 2.3.2.1 below for a more
detailed discussion of the environmental monitoring programs at the Mill.
1.7.5.1 Environmental Radon
Until 10 CPR 20 standards were reduced to 0.1 pCi/l,environmental radon concentrations were
determined by using Track Etch detectors.There was one detector at each of five environmental
monitoring stations with a duplicate at BHV-2,the nearest residence.See the Semi-Annual
Effluent reports,for maps showing these locations.After 1995,with concurrence of the NRC,
environmental radon concentrations are no longer measured at these locations due to the lack of
sensitivity of available monitoring methods to meet the new 10 CPR 20 standard of 0.1 pCi/I.
1.7.5.2 Environmental Gamma
Gamma radiation levels are determined by TLDs.The TLDs are placed at the five
environmental stations located around the perimeter boundary of the mill site discussed above.
The badges are exchanged quarterly.The data are presented in Appendix A.
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Vegetation samples are collected at three locations around the Mill periphery.The sampling
locations are northeast,northwest,and southwest of the Mill facility.Vegetation samples are
collected during early spring,late spring,and fall.Vegetation results are included in Appendix
A.No trends are apparent,as the Ra-226 and Pb-210 concentrations at each sampling location
have remained consistent.
1.7.5.4 Environmental Air Monitoring and Stack Sampling
Air monitoring at the Mill is conducted at five high volume (40 standard cubic feet per minute)
stations located around the periphery of the Mill.These locations are shown in Appendix A and
on Figure 2.3-1.BHV-1 is located at the northern Mill boundary at the meteorological station
site.BHV-2 is further north at the nearest residence.BHV-4 is south of Cell 3,BHV-5 is just
south of the ore storage pad and BHV-6 is located on a vector between the Mill site and the
White Mesa Ute Community.The Semi-Annual Effluent reports contain air monitoring data.
The results of the quarterly stack samples are also presented in Appendix A.
Pursuant to NRC License Amendment No.41 for the Mill's Source Material License No.SUA-
1358,air particulate radionuclide monitoring at BHV-3 was discontinued at the end of the third
quarter of 1995.Sufficient data were accumulated over a 12-year period to adequately establish
background radionuclide concentrations.As a result of Amendment No.41,the air particulate
radionuclide concentrations at each monitoring site are calculated by subtracting the appropriate
quarterly background average.Appendix A tables show the radionuclide concentrations at each
location with background concentrations subtracted.No apparent trends are evident.
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The results of surface water monitoring are presented in the Semi-Annual Effluent Reports.
Cottonwood Creek is sampled Semi-annually and Westwater Creek is sampled on an annual
basis.No trends are apparent.
1.7.5.6 Meteorological Monitoring
The Semi-Alillual Air Quality and Meteorology Monitoring Report for 2008 was provided by
McVehil-Monnett and is included as Appendix F.
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2.0 EXISTING FACILITY
The following sections describe the construction history of the Mill;the Mill and Mill tailings
management facilities;Mill operations including the Mill circuit and tailings management;and
both operational and environmental monitoring.
2.1 Facility Construction History
The Mill is a uranium/vanadium mill that was developed in the late 1970's by Energy Fuels
Nuclear,Inc.("EFN")as an outlet for the many small mines that are located in the Colorado
Plateau and for the possibility of Milling Arizona Strip ores.At the time of its construction,it
was anticipated that high uranium prices would stimulate ore production.However,prices
started to decline about the same time as Mill operations commenced.
As uranium prices fell,producers in the region were affected and mine output declined.After
about two and one-half years,the Mill ceased ore processing operations altogether,began
solution recycle,and entered a total shutdown phase.In 1984,a majority ownership interest was
acquired by Union Carbide Corporation's ("UCC")Metals Division which later became Umetco
Minerals Corporation ("Umetco"),a wholly-owned subsidiary of UCC.This partnership
continued until May 26,1994 when EFN reassumed complete ownership.In May of 1997,
Denison (then named International Uranium (USA)Corporation)and its affiliates purchased the
assets of EFN and is the current owner of the facility.
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2.1.1 Mill and Tailings Management Facility
The Source Materials License Application for the Mill was submitted to the NRC on February 8,
1978.Between that date and the date the first ore was fed to the Mill grizzly on May 6,1980,
several actions were taken including:increasing Mill design capacity,permit issuance from the
United States Environmental Protection Agency ("EPA")and the State of Utah,archeological
clearance for the Mill and tailings areas,and an NRC pre-operational inspection on May 5,1980.
Construction on the tailings area began on August 1,1978 with the movement of earth from the
area of Cell 2.Cell 2 was completed on May 4,1980,Cell 1 on June 29,1981,and Cell 3 on
September 2,1982.In January of 1990 an additional cell,designated Cell 4A,was completed
and initially used solely for solution storage and evaporation.Cell 4A was only used for a short
period of time and then taken out of service because of concerns about the synthetic lining
system.In 2007,Cell 4A was retrofitted with a new State of Utah approved lining system and
was put back into service in October of 2008.
2.2 Facility Operations
In the following subsections,an overview of Mill operations and operating periods are followed
by descriptions of the operations of the Mill circuit and tailings management facilities.
2.2.1 Operating Periods
The Mill was operated by EFN from the initial start-up date of May 6,1980 until the cessation of
operations in 1983.Umetco,as per agreement between the parties,became the operator of
record on January 1,1984.The Mill was shut down during all of 1984.The Mill operated at
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least part of each year from 1985 through 1990.Mill operations again ceased during the years of
1991 through 1994.EFN reacquired sole ownership on May 26,1994,and the Mill operated
again during 1995 and 1996.After acquisition of the Mill by Denison and its affiliates several
local mines were restarted and the Mill processed conventional ore during 1999 and early 2000.
With the resurgence in uranium and vanadium prices in 2003,Denison reopened several area
mines and again began processing uranium and vanadium ores in April of 2008.Mill operations
were suspended in May of 2009,and are scheduled to resume in March of 2010.Typical
employment figures for the Mill are 110 during uranium-only operations and 140 during
uranium/vanadium operations.
Commencing in the early 1990s through today,the Mill has processed alternate feed materials
from time to time when the Mill has not been processing conventional ores.Alternate feed
materials are uranium-bearing materials other than conventionally mined uranium ores.The Mill
installed an alternate feed circuit in 2009 that will allow the Mill to process certain alternate feed
materials simultaneously with conventional ores.
2.2.2 Mill Circuit
While originally designed for a capacity of 1,500 dry tons per day (dtpd.),the Mill capacity was
boosted to the present rated design of 1980 dtpd prior to commissioning.
The Mill uses an atmospheric hot acid leach followed by counter current decantation (CCD).
This in turn is followed by a clarification stage which precedes the solvent extraction (SX)
circuit.Kerosene containing iso-decanol and tertiary amines extracts the uranium and vanadium
from the aqueous solution in the SX circuit.Salt and soda ash are then used to strip the uranium
and vanadium from the organic phase.
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After extraction of the uranium values from the aqueous solution in SX,uranium is precipitated
with anhydrous ammonia,dissolved,and re-precipitated to improve product quality.The
resulting precipitate is then washed and dewatered using centrifuges to produce a final product
called "yellowcake."The yellowcake is dried in a multiple hearth dryer and packaged in drums
weighing approximately 800 to 1,000 lbs.for shipping to converters.
After the uranium values are stripped from the pregnant solution in SX,the vanadium values are
transferred to tertiary amines contained in kerosene and concentrated into an intermediate
product called vanadium product liquor (VPL).An intermediate product,ammonium
metavanadate (AMV),is precipitated from the VPL using ammonium sulfate in batch
precipitators.The AMV is then filtered on a belt filter and,if necessary,dried.Normally,the
AMV cake is fed to fusion furnaces where it is converted to the Mill's primary vanadium
product,V205 tech flake,commonly called "black flake."
The same basic process steps used for the recovery of uranium from conventional ores are used
for the recovery of uranium from alternate feed materials,with some variations depending on the
particular alternate feed material.
The Mill processed 1,511,544 tons of conventional ore and other materials from May 6,1980 to
February 4,1983.During the second operational period from October 1,1985 through
December 7,1987,1,023,393 tons of conventional ore were processed.During the third
operational period from July 1988 through November 1990,1,015,032 tons of conventional ore
were processed.During the fourth operational period from August 1995 through January 1996,
203 ,317 tons of conventional ore were processed.In the fifth operational period,from May 1996
through September 1996,the Mill processed 3,868 tons of calcium fluoride alternate feed
material.From 1997 to early 1999,the Mill processed 58,403 tons from several additional
alternate feed stocks.
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With rising uranium prices in the late 1990's,company mmes were reopened in 1997,and
87,250 tons of conventional ore were processed in 1999 and early 2000.In 2002 and 2003,the
Mill processed 266,690 tons of alternate feed material from government cleanup projects.An
additional 40,866 tons of alternate feed materials were processed in 2007.From April 2008
through May 2009 the Mill processed an additional 184,795 tons of conventional ore.
Inception to date material processed through May 2009 totals 4,128,468 tons.This total is for all
processing periods combined.
2.2.3 Tailings Management Facilities
Tailings produced by the Mill from conventional ores typically contain 30 percent moisture by
weight,have an in-place dry density of 86.3 pounds per cubic foot (calculated from Cell 2
volume and tons placed),have a size distribution with a significant -200 to -325 mesh size
fraction,and have a high acid and flocculent content.Tailings from alternate feed materials that
are similar physically to conventional ores,which comprise most of the tons of alternate feed
materials processed to date at the Mill,are similar to the tailings for conventional ores.Tailings
from some of the higher grade,lower volume alternate feed materials may vary somewhat from
the tailings from conventional ores,primarily in moisture and density content.
The tailings facilities at the Mill currently consist of four cells as follows:
•Cell 1,constructed with a 30-Millimeter (ml)PVC earthen-covered liner,is used for
the evaporation of process solution (Cell 1 was previously referred to as Cell 1-1,but
is now referred to as Cell 1);
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•Cell 2,constructed with a 30-Millimeter (ml)PVC earthen-covered liner,is used for
the storage of barren tailings sands.This Cell is full and has been partially reclaimed;
•Cell 3,constructed with a 30-Millimeter (ml)PVC earthen-covered liner,is used for
the storage of barren tailings sands and solutions.This cell is partially filled and has
been partially reclaimed;and
•Ce1l4A,constructed with a geosynthetic clay liner,a 60 Millimeter (mil)HDPE liner,
a 300 mil HDPE geonet drainage layer,a second 60 mil HDPE liner,and a slimes
drain network over the entire cell bottom.This cell was placed into service in
October of 2008.
Total estimated design capacity of Cells 2,3,and 4A is approximately six million (mm)tons.
Figures 1.5-4 and 1.5-5 show the locations of the tailings cells.
Denison has submitted an application to the Executive Secretary to amend the License and
GWDP to authorize the construction of tailings Cell 4B,which will be located adjacent to Cell
4A and will provide approximately two million additional tons of tailings capacity.That
application is currently under review by the Executive Secretary.Upon approval of that
application,this Plan will be amended to include Ce1l4B.
2.2.3.1 Tailings Management
Constructed in shallow valleys or swale areas,the lined tailings facilities provide storage below
the existing grade and reduce potential exposure.Because the cells are separate and distinct,
individual tailings cells may be reclaimed as they are filled to capacity.This phased reclamation
approach minimizes the amount of tailings exposed at any given time and reduces potential
exposure to a minimum.
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Slurry disposal has taken place in Cells 2,3 and 4A.Tailings placement in Cell 2 and Cell 3 was
accomplished by means of the final grade method,described below.
The final grade method used in Cell 2 and Cell 3 calls for the slurry to be discharged until the
tailings surface comes up to near final grade.The discharge points are set up in the east end of
the cell,and the final grade surface is advanced to the slimes pool area.Course tailings sand
from the discharge points are graded into low areas to reach the final disposal elevation.When
the slimes pool is reached,the discharge points are then moved to the west end of the cell and
worked back to the middle.An advantage to using the final grade method is that maximum
beach stability is achieved by (1)allowing water to drain from the sands to the maximum extent,
and (2)allowing coarse sand deposition to help provide stable beaches.Another advantage is
that radon release and dust prevention measures (through the placement of the initial layer of the
final cover)are applied as expeditiously as possible.
Slurry disposal in Cell 4A is from several pre-determined discharge points located around the
north and east sides of the cell.Slurry discharge is only allowed on skid pads,or protective
HDPE sheets,to prevent damage to the synthetic lining system.Once tailings solids have reach
the maximum elevation around the perimeter of the cell,discharge points can be moved toward
the interior of the cell.
2.2.3.2 Liquid Management
As a zero-discharge facility,the Mill must evaporate all of the liquids utilized during processing.
This evaporation takes place in three (3)areas:
•CellI,which is used for solutions only;
•Cell 3,in which tailings and solutions exist;and
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•Cell 4A,in which tailings and solutions exist.
The original engineering design indicated a net water gain into the cells would occur during Mill
operations.As anticipated,this has been proven to be the case.In addition to natural
evaporation,spray systems have been used at various times to enhance evaporative rates and for
dust control.To minimize the net water gain,solutions are recycled back for use in the Mill
circuit from the active tailings cells to the maximum extent possible.Solutions from Cells 1,3
and 4A are brought back to the CCD circuit where metallurgical benefit can be realized.Recycle
to other parts of the Mill circuit are not feasible due to the acidic condition of the solution.
2.3 Monitoring Programs
2.3.1 Monitoring and Reporting Under the Mill's GWDP
2.3.1.1 Groundwater Monitoring
a)Plugged and Excluded Wells
Wells MW-6,MW-7,and MW-8 were plugged because they were in the area of Cell 3,as was
MW-13,in the Ce1l4A area.Wells MW-9 and MW-lO are dry and have been excluded from the
monitoring program.MW-16 is dry and has been plugged as part of the tailings Cell 4B
construction.
b)Groundwater Monitoring at the Mill Prior to Issuance of the GWDP
At the time of renewal of the License by NRC in March,1997 and up until issuance of the
GWDP in March 2005,the Mill implemented a groundwater detection monitoring program to
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ensure compliance to 10 CFR Part 40,Appendix A,in accordance with the provisions of the
License.The detection monitoring program was in accordance with the report entitled,Points of
Compliance,White Mesa Uranium Mill,prepared by Titan Environmental Corporation,
submitted by letter to the NRC dated October 5,1994 (Titan,1994b).Under that program,the
Mill sampled monitoring wells MW-5,MW-ll,MW-12,MW-14,MW-15 and MW-17,on a
quarterly basis.Samples were analyzed for chloride,potassium,nickel and uranium,and the
results of such sampling were included in the Mill's Semi-Annual Effluent Monitoring Reports
that were filed with the NRC up until August 2004 and with the DRC subsequent thereto.
Between 1979 and 1997,the Mill monitored up to 20 constituents in up to 13 wells.That
program was changed to the Points of Compliance Program in 1997 because NRC had concluded
that:
•The Mill and tailings system had produced no impacts to the perched zone or deep
aquifer;and
•The most dependable indicators of water quality and potential cell failure were
considered to be chloride,nickel,potassium and natural uranium.
c)Issuance of the GWDP
On March 8,2005,the Executive Secretary issued the GWDP,which includes a groundwater
monitoring program that supersedes and replaces the groundwater monitoring requirements set
out in the License.Groundwater monitoring under the GWDP commenced in March 2005,the
results of which are included in the Mill's Quarterly Groundwater Monitoring Reports that are
filed with the Executive Secretary.
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d)Current Ground Water Monitoring Program at the Mill Under the GWDP
The current groundwater monitoring program at the Mill under the GWDP consists of
monitoring at 22 point of compliance monitoring wells:MW-1,MW-2,MW-3,MW-3A,MW-
5,MW-ll,MW-12,MW-14,MW-15,MW-17,MW-18,MW-19,MW-23,MW-24,MW-25,
MW-26,MW-27,MW-28,MW-29,MW-30,MW-31 and MW-32.The locations of these wells
are indicated on Figure 1.5-2.
Part I.E.1.(c)of the GWDP requires that each point of compliance well must be sampled for the
following constituents:
Table 2.3-1
Groundwater Monitoring Constituents Listed in Table 2 of the GWDP
Nutrients:
Ammonia (as N)
Nitrate &Nitrite (as N)
Heavy Metals:
Arsenic
Beryllium
Cadmium
Chromium
Cobalt
Copper
Iron
Lead
Manganese
Mercury
Molybdenum
Nickel
Selenium
Silver
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Thallium
Tin
Uranium
Vanadium
Zinc
Radiologies:
Gross Alpha
Volatile Organie Compounds:
Acetone
Benzene
2-Butanone (MEK)
Carbon Tetrachloride
Chloroform
Chloromethane
Dichloromethane
Naphthalene
Tetrahydrofuran
Toluene
Xylenes (total)
Others:
Field pH (S.D.)
Fluoride
Chloride
Sulfate
TDS
Further,Part I.E.1.(c)of the GWDP,requires that,III addition to pH,the following field
parameters must also be monitored:
•Depth to groundwater
•Temperature
•Specific conductance,
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and that,in addition to chloride and sulfate,the following general organics must also be
monitored:
•Carbonate,bicarbonate,sodium,potassium,magnesium,calcium,and total anions and
cations.
Sample frequency depends on the speed of ground water flow in the vicinity of each well.Parts
I.E.1(a)and (b)of the GWDP provide that quarterly monitoring is required for all wells where
local groundwater average linear velocity has been found by the Executive Secretary to be equal
to or greater than 10 feet/year,and semi-annual monitoring is required where the local
groundwater average linear velocity has been found by the Executive Secretary to be less than 10
feet/year.
Based on these criteria,quarterly monitoring is required at MW-ll,MW-14,MW-25, MW-26,
MW-30 and MW-31,and semi-annual monitoring is required at MW-1,MW-2,MW-3,MW-3A,
MW-5,MW-12,MW-15,MW-17,MW-18, MW-19,MW-23,MW-24,MW-27,MW-28,MW-
29 and MW-32.
2.3.1.2 Deep Aquifer
The culinary well (one of the supply wells)is completed in the Navajo aquifer,at a depth of
approximately 1,800 feet below the ground surface.Due to the fact that the deep confined
aquifer at the site is hydraulically isolated from the shallow perched aquifer (see the discussion
in Sections 1.5.1.1 and 1.5.1.2)no monitoring ofthe deep aquifer is required under the GWDP.
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2.3.1.3 Seeps and Springs
Pursuant to Part LH.8 of the GWDP,Denison has a Sampling Plan for Seeps and Springs in the
Vicinity of the White Mesa Uranium Mill,Revision:0,March 17,2009 (the "SSSP")that
requires the Mill to perform groundwater sampling and analysis of all seeps and springs found
downgradient or lateral gradient from the tailings cells.
Under the SSSP,seeps and springs sampling is conducted on an annual basis between May 1 and
July 15 of each year,to the extent sufficient water is available for sampling,at five identified
seeps and springs near the Mill.The sampling locations were selected to correspond with those
seeps and springs sampled for the initial Mill site characterization performed in the 1978 ER,
plus additional sites located by Denison,the BLM and Ute Mountain Ute Indian Tribe
representatives.
Samples are analyzed for all ground water monitoring parameters found in Table 2.3-1 above.
The laboratory procedures utilized to conduct the analyses of the sampled parameters are those
utilized for groundwater sampling.In addition to these laboratory parameters,the pH,
temperature and conductivity of each sample will be measured and recorded in the field.
Laboratories selected by Denison to perform analyses of seeps and springs samples will be
required to be certified by the State of Utah in accordance with UAC R317-6-6.12.A.
The seeps and springs sampling events will be subject to the Mill's QAP,unless otherwise
specifically modified by the SSSP to meet the specific needs of this type of sampling.
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2.3.1.4 Discharge Minimization Technology and Best Available Technology Standards and
Monitoring
a)General
Part I.D.of the GWDP sets out a number of Discharge Minimization Technology ("DMT")and
Best Available Technology ("BAT")standards that must be followed.Part I.E.of the GWDP
sets out the Ground Water Compliance and Technology Performance Monitoring requirements,
to ensure that the DMT and BAT standards are met.These provisions of the GWDP,along with
the White Mesa Mill Tailings Management System and Discharge Minimization (DMT)
Monitoring Plan,9/08 Revision:Denison-6 (the "DMT Plan"),the Cell 4A BAT Monitoring,
Operations and Maintenance Plan and other plans and programs developed pursuant to such
Parts of the GWDP,set out the methods and procedures for inspections of the facility operations
and for detecting failure of the system.
In addition to the programs discussed above,the following additional DMT and BAT
performance standards and associated monitoring are required under Parts I.D and I.E.of the
GWDP
b)Tailings Cell Operation
Part I.D.2 of the GWDP provides that authorized operation and maximum disposal capacity in
each of the existing tailings Cells,1,2 and 3 shall not exceed the levels authorized by the
License and that under no circumstances shall the freeboard be less than three feet,as measured
from the top of the flexible membrane liner ("FML").Part I.E.7(a)of the GWDP requires that
the wastewater pool elevations in Cells 1 and 3 must be monitored weekly to ensure compliance
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with the maximum wastewater elevation criteria mandated by Condition 10.3 of the License.
Part I.D.2 further provides that any modifications by Denison to any approved engineering
design parameter at these existing tailings cells requires prior Executive Secretary approval,
modification of the GWDP and issuance of a construction permit.
c)Slimes Drain Monitoring
Part I.D.3(b)(1)of the GWDP requires that Denison must at all times maintain the average
wastewater head in the slimes drain access pipe to be as low as reasonably achievable (ALARA)
in each tailings disposal cell,in accordance with the approved DMT Plan.Compliance will be
achieved when the average annual wastewater recovery elevation in the slimes drain access pipe,
determined pursuant to the currently approved DMT Plan meets the conditions in Equation 1
specified in Part I.D.3(b)(1)of the GWDP.
Part I.E.7(b)of the GWDP requires that Denison must monitor and record monthly the depth to
wastewater in the slimes drain access pipes as described in the currently approved DMT Plan at
Cell 2,and upon commencement of de-watering activities,at Cell 3,in order to ensure
compliance with Part I.D.3(b)(1)of the GWDP.
d)Maximum Tailings Waste Solids Elevation
Part I.D.3(c)of the GWDP requires that upon closure of any tailings cell,Denison must ensure
that the maximum elevation of the tailings waste solids does not exceed the top of the FML.
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e)Wastewater Elevation in Roberts Pond
Part LD.3(e)of the GWDP requires that Roberts Pond be operated so as to provide a minimum
2-foot freeboard at all times,and that under no circumstances will the water level in the pond
exceed an elevation of 5,624 feet above mean sea level.Part LD.3(e)also provides that in the
event the wastewater elevation exceeds this maximum level,Denison must remove the excess
wastewater and place it into containment in Cell 1 within 72 hours of discovery.
Part LE.7(c)of the GWDP requires that the wastewater level in Roberts Pond must be monitored
and recorded weekly,in accordance with the currently approved DMT Plan,to determine
compliance with the DMT operations standard in Part I.D.3(e)of the GWDP;
f)Inspection of Feedstock Storage Area
Part LD.3(f)of the GWDP requires that open-air or bulk storage of all feedstock materials at the
Mill facility awaiting Mill processing must be limited to the eastern portion of the Mill site (the
"ore pad")described by the coordinates set out in that Part of the GWDP,and that storage of
feedstock materials at the facility outside of this defined area,must meet the requirements of Part
LD.ll of the GWDP.Part LD.ll requires that Denison must store and manage feedstock
materials outside the defined ore storage pad in accordance with the following minimum
performance requirements:
(i)Feedstock materials will be stored at all times in water-tight containers,and
(ii)Aisle ways will be provided at all times to allow visual inspection of each and
every feedstock container,or
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(iii)Each and every feedstock container will be placed inside a water-tight overpack
prior to storage,or
(iv)Feedstock containers shall be stored on a hardened surface to prevent spillage
onto subsurface soils,and that conforms with the following minimum physical
requirements:
A.A storage area composed of a hardened engineered surface of asphalt or
concrete,and
B.A storage area designed,constructed,and operated in accordance with
engineering plans and specifications approved in advance by the Executive
Secretary.All such engineering plans or specifications submitted shall
demonstrate compliance with Part LD.4 of the GWDP,and
C.A storage area that provides containment berms to control stormwater run-on
and run-off,and
D.Stormwater drainage works approved in advance by the Executive Secretary,
or
(v)Other storage facilities and means approved m advance by the Executive
Secretary.
Part LE.7(d)of the GWDP requires that Denison conduct weekly inspections of all feedstock
storage areas to:
(i)Confirm that the bulk feedstock materials are maintained within the approved
feedstock storage area specified by Part LD.3(f)of the GWDP;and
(ii)Verify that all alternate feedstock materials located outside the approved
feedstock storage area are stored in accordance with the requirements found in
Part LD.11 of the GWDP.
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Part I.E.7(f)further provides that Denison must conduct weekly inspections to verify that each
feed material container complies with the requirements of Part I.D.ll of the GWDP.
The Mill's Standard Operating Procedure under the License for inspection of the Mill's ore pad
is contained in Section 3.3 of the DMT Plan.
g)Monitor and Maintain Inventory of Chemicals
Part I.D.3(g)of the GWDP requires that for all chemical reagents stored at existing storage
facilities and held for use in the milling process,Denison must provide secondary containment to
capture and contain all volumes of reagent(s)that might be released at any individual storage
area.Response to spills,cleanup thereof,and required reporting must comply with the
provisions of the Mill's Emergency Response Plan,which is found in the Mill's Stormwater Best
Management Practices Plan,Revision 1.3;June 12,2008 (a copy of which is included as
Appendix C),as stipulated by Parts I.D.lO and I.H.16 of the GWDP.Part I.D.3(g)further
provides that for any new construction of reagent storage facilities,such secondary containment
and control must prevent any contact of the spilled or otherwise released reagent or product with
the ground surface.
Part I.E.9 of the GWDP requires that Denison must monitor and maintain a current inventory of
all chemicals used at the facility at rates equal to or greater than 100 kg/yr.This inventory must
be maintained on-site,and must include:
(iii)Identification of chemicals used in the milling process and the on-site laboratory;
and
(iv)Determination of volume and mass of each raw chemical currently held in storage
at the facility.
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2.3.1.5 BATPeiformance Standards for Ce1l4A
a)BAT Operations and Maintenance Plan
Part LD.6 of the GWDP provides that Denison must operate and maintain Cell 4A so as to
prevent release of wastewater to groundwater and the environment in accordance with the Mill's
Cell 4A BAT Monitoring,Operations and Maintenance Plan,pursuant to Part LH.19 of the
GWDP.The Mill's Cell 4A BAT Monitoring,Operations and Maintenance Plan,09/08
Revision:Denison 1.3 includes the following performance standards:
(i)The fluid head in the leak detection system shall not exceed 1 foot above the
lowest point in the lower membrane liner;
(ii)The leak detection system maximum allowable daily leak rate shall not exceed
24,160 gallons/day;
(iii)After Denison initiates pumping conditions in the slimes drain layer in Cell 4A,
Denison will provide continuous declining fluid heads in the slimes drain layer,in
a manner equivalent to the requirements found in Part LD.3(b)for Cells 2 and 3;
and
(iv)Under no circumstances shall the freeboard be less than 3-feet in Cell 4A,as
measured from the top of the FML.
b)Implementation of Monitoring Requirements Under the BAT Operations and
Maintenance Plan
The Cell 4A BAT Monitoring,Operations and Maintenance Plan also requires Denison to
perform the following monitoring and recordkeeping requirements:
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(i)Weekly Leak Detection System (LDS)Monitoring -including:
A.Denison must provide continuous operation of the leak detection system
pumping and monitoring equipment,including,but not limited to,the
submersible pump,pump controller,head monitoring,and flow meter
equipment approved by the Executive Secretary.Failure of any pumping or
monitoring equipment not repaired and made fully operational within 24-hours
of discovery shall constitute failure of BAT and a violation of the GWDP;
B.Denison must measure the fluid head above the lowest point on the secondary
FML by the use of procedures and equipment approved by the Executive
Secretary.Under no circumstance shall fluid head in the leak detection system
sump exceed a I-foot level above the lowest point in the lower FML on the cell
floor.For purposes of compliance monitoring this I-foot distance shall equate
to 2.28 feet above the leak detection system transducer;
C.Denison must measure the volume of all fluids pumped from the leak detection
system.Under no circumstances shall the average daily leak detection system
flow volume exceed 24,160 gallons/day;and
D.Denison must operate and maintain wastewater levels to provide a 3-foot
Minimum of vertical freeboard in tailings Cell 4A.Such measurements must
be made to the nearest 0.1 foot.
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(ii)Slimes Drain Recovery Head Monitoring
Immediately after the Mill initiates pumping conditions in the Cell 4A slimes drain system,
monthly recovery head tests and fluid level measurements will be made in accordance with the
requirements of Parts LD.3 and LE.7(b)of the GWDP and any plan approved by the Executive
Secretary.
2.3.1.6 Stormwater Management and Spill Control Requirements
Part LD.lO of the GWDP reqUIres that Denison will manage all contact and non-contact
stormwater and control contaminant spills at the facility in accordance with the Mill's
stormwater best management practices plan.The Mill's Stormwater Best Management Practices
Plan,Revision 1.3:June 12,2008 (a copy of which is included as Appendix C)includes the
following provisions:
a)Protect groundwater quality or other waters of the state by design,construction,and/or
active operational measures that meet the requirements of the Ground Water Quality
Protection Regulations found in UAC R317-6-6.3(G)and R317-6-6.4(C);
b)Prevent,control and contain spills of stored reagents or other chemicals at the Mill site;
c)Cleanup spills of stored reagents or other chemicals at the Mill site immediately upon
discovery;and
d)Report reagent spills or other releases at the Mill site to the Executive Secretary in
accordance with UAC 19-5-114.
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2.3.1.7 Tailings and Slimes Drain Sampling
Part LE.8 of the GWDP requires that,on an annual basis,Denison must collect wastewater
quality samples from each wastewater source at each tailings cell at the facility,including
surface impounded wastewaters,and slimes drain wastewaters,pursuant to the Mill's Tailings
and Slimes Drain Sampling Program,Revision 0,November 20,2008 (the "WQSP").All such
sampling must be conducted in August of each calendar year.
The purpose of the WQSP is to characterize the source term quality of all tailings cell
wastewaters,including impounded wastewaters or process waters in the tailings cells,and
wastewater or leachates collected by internal slimes drains.The WQSP requires:
•Collection of samples from the pond area of each active cell and the slimes drain of each
cell that has commenced de-watering activities;
•Samples of tailings and slimes drain material will be analyzed at an offsite contract
laboratory and subjected to the analytical parameters included in Table 2 of the GWDP
(see Table 2.3-1 above)and general inorganics listed in Part LE.1(d)(2)(ii)of the GWDP,
as well as semi-volatile organic compounds;
• A detailed description of all sampling methods and sample preservation techniques to be
employed;
•The procedures utilized to conduct these analyses will be standard analytical methods
utilized for groundwater sampling and as shown in Section 8.2 of the Mill's QAP;
•The contracted laboratory will be certified by the State of Utah in accordance with UAC
R317-6-6.12A;and
•30-day advance notice of each annual sampling event must be given,to allow the
Executive Secretary to collect split samples of all tailings cell wastewater sources.
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The tailings and slimes drain sampling events are subject to the Mill's QAP,unless otherwise
specifically modified by the WQSP to meet the specific needs of this type of sampling.
2.3.2 Monitoring and Inspections Required Under the License
2.3.2.1 Environmental Monitoring
The environmental monitoring program is designed to assess the effect of Mill process and
disposal operations on the unrestricted environment.Delineation of specific equipment and
procedures is presented in the Mill's Environmental Protection Manual,included as Appendix A
to the 2007 License Renewal Application.
c)Ambient Air Monitoring
(i)Ambient Particulate
Airborne radionuclide particulate sampling is performed at five locations,termed BHV-1,BHV-
2,BHV-4,BHV-5 and BHV-6.With the approval of the NRC and effective November,1995,
BHV-3 was removed from the active air particulate monitoring program.At that time,the Mill
proposed (and NRC determined)that a sufficient air monitoring data base had been compiled at
station BHV-3 to establish a representative airborne particulate radionuclide background for the
Mill.BHV-6 was installed by the Mill at the request of the White Mesa Ute Community.This
station began operation in July of 1999 and provides airborne particulate information in the
southerly direction between the Mill and the White Mesa Ute Community.Figure 2.3-1 shows
the locations of these air particulate monitoring stations.
WMRCPLANISECT02.RPTI November 2009
W:IUSAIUtahlMiUldwqslReclamation PlanslRecPlan4.O\Fiqure 2.3-1 Air Monitorinq.dwo Fioure 2.3-1 23111/2009 dsJedd
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Denison Mines (USA)Corp.
Property Boundary
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o Air Monitor
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WHITE MESA MILL
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Figure 2.3-1
High Volume
Air Monitoring Stations
Page 2-25
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Mill Reclamation Plan
The present sampling system consists of high volume particulate samplers utilizing mass flow
controllers to maintain an air flow rate of approximately 32 standard cubic feet per minute.
Samplers are operated continuously with a goal for on-stream operating period at ninety percent.
Filter rotation is weekly with quarterly site compositing for particulate radionuclide analysis.
Analysis is done for U-natural,Th-230,Ra-226,and Pb-210.
See Section 3.13.1.7(a)of the 2007 ER for a summary of historic monitoring results for airborne
particulate.
(ii)Ambient Radon
With the approval of the NRC,Radon-222 monitoring at the BHV stations was discontinued in
1995,due to the unreliability of monitoring equipment available at that time to detect the new 10
CFR standard of 0.1 pCi/1.From that time until the present,the Mill demonstrated compliance
with the requirements of R313-15-301 by calculation authorized by the NRC in September 1995
and as contemplated by R313-15-302 (2)(a).
This calculation was performed by use of the MILDOS code for estimating environmental
radiation doses for uranium recovery operations (Strenge and Bender 1981)in 1991 in support of
the Mill's 1997 license renewal and more recently in 2007 in support of the 2007 License
Renewal Application,by use of the updated MILDOS AREA code (Argonne 1998).The
analysis under both the MILDOS and MILDOS AREA codes assumed the Mill to be processing
high grade Arizona Strip ores at full capacity,and calculated the concentrations of radioactive
dust and radon at individual receptor locations around the Mill.Specifically,the modeling under
these codes assumed the following conditions:
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•730,000 tons of ore per year
•Average grade of 0.53%U30 S
•Yellowcake production of 4,380 tons of U30 S per year (8.8 million pounds U30 S per
year).
Based on these conditions,the MILDOS and MILDOS AREA codes calculated the combined
total effective dose equivalent from both air particulate and radon at the current nearest residence
(approximately 1.2 miles north of the Mill),i.e.,the individual member of the public likely to
receive the highest dose from Mill operations,as well as at all other receptor locations,to be
below the ALARA goal of 10 mrem/yr for air particulate alone as set out in R313-15-101(4).
Mill operations are constantly monitored to ensure that operating conditions do not exceed the
conditions assumed in the above calculations.If conditions are within those assumed above,
radon has been calculated to be within regulatory limits.If conditions exceed those assumed
above,then further evaluation will be performed in order to ensure that doses to the public
continue to be within regulatory limits.Mill operations to date have never exceeded the License
conditions assumed above.
In order to determine if detection equipment has improved since 1995,the Mill has,commencing
with the first quarter of 2007,re-instituted direct measurements of radon at the five air particulate
monitoring locations currently utilized for air particulate sampling.The reliability of this data is
currently under review by Denison.
d)External Radiation
TLD badges,as supplied by Landauer,Inc.,or equivalent,are utilized at BHV-1,BHV-2,BHV-
3,BHV-4,BHV-5 and BHV-6 to determine ambient external gamma exposures (see Figure 2.3-
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1).System quality assurances are determined by placing a duplicate monitor at one site
continuously.Exchanges of TLD badges are on a quarterly basis.Badges consist of a minimum
of five TLD chips.Measurements obtained from location BHV-3 have been designated as
background due to BHV-3's remoteness from the Mill site (BHV-3 is located approximately 3.5
miles west of the Mill site).For further procedural information see Section 4.3 of the Mill's
Environmental Protection Manual,included as Appendix A to the 2007 License Renewal
Application.See Section 3.13.1.7(c)of the 2007 ER for a summary of historic monitoring
results for external radiation.
e)Soil and Vegetation
(i)Soil Monitoring
Soil samples from the top one centimeter of surface soils are collected annually at each of BHV-
1,BHV-2,BHV-3,BHV-4 and BHV-5 (see Figure 2.3-1).A minimum of two kilograms of soil
is collected per site and analyzed for U-natural and Ra-226.For further procedural information
see Section 4.1 of the Mill's Environmental Protection Manual included as Appendix A to the
2007 License Renewal Application.See Section 3.13.1.7.1 of the 2007 ER for a summary of the
historic results for soil monitoring.The 2007 ER concludes that the results of sampling are low,
less than the umestricted release limits.
(i)Vegetation Monitoring
Forage vegetation samples are collected three times per year from animal grazing locations to the
northeast (near BHV-1 (the meteorological station)),northwest (to the immediate west of the site)
and southwest (by BHV-4)of the Mill site.Samples are obtained during the grazing season, in
the late fall,early spring,and in late spring.A minimum of three kilograms of vegetation are
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submitted from each site for analysis of Ra-226 and Pb-210.For further procedure information
see Section 4.2 of the Mill's Environmental Protection Manual included as Appendix A to the
2007 License Renewal Application.See Section 3.13.7(d)of the 2007 ER for a summary of the
historic results for vegetation monitoring.The 2007 ER concludes that the most recent results
indicate no increase in uptake of Ra-226 and Pb-210 in vegetation.
d)Meteorological
Meteorological monitoring is done at a site near BHV-1.The sensor and recording equipment
are capable of monitoring wind velocity and direction,from which the stability classification is
calculated.Data integration duration is one-hour with hourly recording of mean speed,mean
wind direction,and mean wind stability (as degrees sigma theta).
The data from the meteorological station is retrieved monthly by down loading onto a Campbell
Scientific data module,or the equivalent.The data module is sent to an independent
meteorological contractor where the module is downloaded to a computer record,and the data is
correlated and presented in a Semi-Annual Meteorological Report.
Monitoring for precipitation consists of a daily log of precipitation using a standard NOAA rain
gauge,or the equivalent,installed near the administrative office,consistent with NOAA
specifications.
Windrose data is summarized in a format compatible with MILDOS and UDAD specifications
for 40 CFR 190 compliance.For further procedural information see Section 1.3 of the Mill's
Environmental Protection Manual included as Appendix A to the 2007 License Renewal
Application.A windrose for the site is set out in Figure 1.1-1.
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e)Point Emissions
Stack emission monitoring from yellowcake facilities follows EPA Method 5 procedures and
occurs on a quarterly basis,during operation of the facility.Particulate sampling is analyzed for
Unat on a quarterly basis and for Th-230,Ra-226,and Pb-21O on a semi-annual basis.Demister
and ore stack emission monitoring follows EPA Method 5 procedure on a semi-annual basis,
during operation of the facility.Particulate samples are analyzed for Unat,Th-230,Ra-226,and
Pb-210.Monitored data includes scrubber system operation levels,process feed levels,
particulate emission concentrations,isokinetic conditions,and radionuclide emission
concentrations.For further procedure information see Section 1.4 of the Mill's Environmental
Protection Manual included as Appendix A to the 2007 License Renewal Application.Historic
stack emission data are summarized in Section 3.13.1.7(e)of the 2007 ER.
f)Surface Water Monitoring
Surface water monitoring is conducted at two locations adjacent to the Mill facility known as
Westwater Canyon and Cottonwood Creek.Samples are obtained annually from Westwater and
quarterly from Cottonwood using grab sampling.For Westwater Creek,samples will be of
sediments if a water sample is not available.Field monitored parameters and laboratory
monitored parameters are listed in Table 2.3-2.For further procedural information see Section
2.1 of the Mill's Environmental Protection Manual included as Appendix A to the 2007 License
Renewal Application.See Section 3.7.4 of the 2007 ER for a summary of the historic results for
surface water monitoring.
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Table 2.3-2
Operational Phase Surface Water Monitoring Program
Monitoring Sites
Westwater Creek and Cottonwood Creek
Field Requirements
1.temperature C;
2.Specific Conductivity umhos at 25 C;
3.pH at 25 C;
4.Sample date;
5.Sample ID Code;
Vendor Laboratory Requirements
*Semlannual sample must be taken a mIlllmum of four months apart.
**Annual Westwater Creek sample is analyzed for semi-annual parameters.
Radionuclides and LLDs reported in IJCi/ml
Semiannual*Quarterly
One gallon Unfiltered and Raw One gallon Unfiltered and Raw
One gallon Unfiltered,Raw and preserved to One gallon Unfiltered,Raw and Preserved to
pH <2 with HN03 pH <2 with HN03
Total Dissolved Solids Total Dissolved Solids
Total Suspended Solids Total Suspended Solids
Gross Alpha
Suspended Unat
Dissolved Unat
Suspended Ra-226
Dissolved Ra-226
Suspended Th-230
Dissolved Th-230 ..
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2.3.2.2 Additional Monitoring and Inspections Required Under the License
Under the License daily,weekly,and monthly inspection reporting and monitoring are required
by NRC Regulatory Guide 8.31,Information Relevant to Ensuring that Occupational Radiation
Exposures at Uranium Recovery Facilities will be As Low As is Reasonable Achievable,
Revision 1,May 2002 ("Reg Guide 8.31"),by Section 2.3 of the Mill's ALARA Program and by
the DMT Plan,over and above the inspections described above that are required under the
GWDP.A copy of the Mill's ALARA Program is included as Appendix I to the 2007 License
Renewal Application.
a)Daily Inspections
Three types ofdaily inspections are performed at the Mill under the License:
(i)Radiation Staff Inspections
Paragraph 2.3.1 of Reg.Guide 8.31 provides that the Mill's Radiation Safety Officer ("RSO")or
designated health physics technician should conduct a daily walk-through (visual)inspection of
all work and storage areas of the Mill to ensure proper implementation of good radiation safety
procedures,including good housekeeping that would minimize unnecessary contamination.
These inspections are required by Section 2.3.1 of the Mill's ALARA Program,and are
documented and on file in the Mill's Radiation Protection Office.
(ii)Operating Foreman Inspections
30 CFR Section 56.18002 of the Mine Safety and Health Administration regulations requires that
WMRCPLAN\SECT02.RPT\November2009
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Denison Mines (USA)Corp.
Mill Reclamation Plan
a competent person designated by the operator must examine each working place at least once
each shift for conditions which may adversely affect safety or health.These daily inspections are
documented and on file in the Mill's Radiation Protection Office.
(iii)Daily Tailings Inspection
Paragraph 2.2 of the DMT Plan requires that during Mill operation,the Shift Foreman,or other
person with the training specified in paragraph 2.4 of the DMT Plan,designated by the RSO,will
perform an inspection of the tailings line and tailings area at least once per shift,paying close
attention for potential leaks and to the discharges from the pipelines.Observations by the
Inspector are recorded on the appropriate line on the Mill's Daily Inspection Data form.
b)Weekly Inspections
Three types of weekly inspections are performed at the Mill under the License:
(i)Weekly Inspection of the Mill Forms
Paragraph 2.3.1 of Reg.Guide 8.31 provides that the RSO and the Mill foreman should,and
Section 2.3.2 of the Mill's ALARA Program provides that the RSO and Mill foreman,or their
respective designees,shall conduct a weekly inspection of all Mill areas to observe general
radiation control practices and review required changes in procedures and equipment.Particular
attention is to be focused on areas where potential exposures to personnel might exist and in
areas of operation or locations where contamination is evident.
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Mill Reclamation Plan
(ii)Weekly are Storage Pad Inspection Forms
Paragraph 3.3 of the DMT Plan requires that weekly feedstock storage area inspections will be
performed by the Radiation Safety Department,to confirm that the bulk feedstock materials are
stored and maintained within the defined area of the ore pad and that all alternate feed materials
located outside the defined ore pad area are maintained within water tight containers.The results
of these inspections are recorded on the Mill's are Storage/Sample Plant Weekly Inspection
Report.
(iii)Weekly Tailings and DMT Inspection
Paragraphs 3.1 and 3.2 of the DMT Plan require that weekly inspections of the tailings area and
DMT requirements be performed by the radiation safety department.
c)Monthly Reports
Two types of monthly reports are prepared by Mill staff:
(i)Monthly Radiation Safety Reports
At least monthly,the RSO reviews the results of daily and weekly inspections,including a
review of all monitoring and exposure data for the month and provides to the Mill Manager a
monthly report containing a written summary of the month's significant worker protection
activities (Section 2.3.4 of the Mill's ALARA Program).
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Denison Mines (USA)Corp.
Mill Reclamation Plan
(ii)Monthly Tailings Inspection Reports
Paragraph 4 of the DMT Plan requires that a Monthly Inspection Data form be completed for the
monthly tailings inspection.This inspection is typically performed in the fourth week of each
month and is in lieu of the weekly tailings inspection for that week.
Mill staff also prepares a monthly summary of all daily,weekly,monthly and quarterly tailings
inspections.
d)Quarterly Tailings Inspections
Paragraph 5 of the DMT Plan requires that the RSO or his designee perform a quarterly tailings
inspection.
e)Annual Evaluations
The following annual evaluations are performed under the License,as set out in Section 6 of the
DMT Plan.
(i)Annual Technical Evaluation
An annual technical evaluation of the tailings management system must be performed by a
registered professional engineer (PE),who has experience and training in the area of
geotechnical aspects of retention structures.The technical evaluation includes an on-site
inspection of the tailings management system and a thorough review of all tailings records for
the past year.The Technical Evaluation also includes a review and summary of the annual
movement monitor survey (see paragraph (ii)below).
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Denison Mines (USA)Corp.
Mill Reclamation Plan
All tailings cells and corresponding dikes are inspected for signs of erosion,subsidence,
shrinkage,and seepage.The drainage ditches are inspected to evaluate surface water control
structures.
In the event tailings capacity evaluations were performed for the receipt of alternate feed
material during the year,the capacity evaluation forms and associated calculation sheets will be
reviewed to ensure that the maximum tailings capacity estimate is accurate.The amount of
tailings added to the system since the last evaluation will also be calculated to determine the
estimated capacity at the time of the evaluation.
As discussed above,tailings inspection records consist of daily,weekly,monthly,and quarterly
tailings inspections.These inspection records are evaluated to determine if any freeboard limits
are being approached.Records will also be reviewed to summarize observations of potential
concern.The evaluation also involves discussion with the Environmental and/or Radiation
Technician and the RSO regarding activities around the tailings area for the past year.During
the annual inspection,photographs of the tailings area are taken.The training of individuals is
also reviewed as a part of the Annual Technical Evaluation.
The registered engineer obtains copies of selected tailings inspections,along with the monthly
and quarterly summaries of observations of concern and the corrective actions taken.These
copies are then included in the Annual Technical Evaluation Report.
The Annual Technical Evaluation Report must be submitted by September 1sl of every year to
the Directing Dam Safety Engineer,State of Utah,Natural Resources.
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Denison Mines (USA)Corp.
Mill Reclamation Plan
(ii)Annual Movement Monitor Survey
A movement monitor survey is conducted by a licensed surveyor annually during the second
quarter of each year.The movement monitor survey consists of surveying monitors along dikes
3-S,4A-W,and 4A-S to detect any possible settlement or movement of the dikes.The data
generated from this survey is reviewed and incorporated into the Annual Technical Evaluation
Report of the tailings management system.
(iii)Annual Leak Detection Fluid Samples
In the event solution has been detected in a leak detection system in Cells 1,2 or 3,a sample will
be collected on an annual basis.This sample will be analyzed according to the conditions set
forth in License Condition 11.3.C.The results of the analysis will be reviewed to determine the
origin of the solution.
WMRCPLANISECT02.RPTI November2009
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Denison Mines (USA)Corp.
Mill Reclamation Plan
3.0 RECLAMATION PLAN
This section provides an overview of the Mill location and property;details the facilities to be
reclaimed;and describes the design criteria applied in this Plan.Reclamation plans and
specifications are presented in Attachment A.Attachment B presents the quality plan for
construction activities.Attachment C presents cost estimates for reclamation.Attachments D
through H present material test results and design calculations to support the reclamation plan.
3.1 Location and Property Description
The Mill is located approximately six miles south of Blanding,Utah on US Highway 191 on a
parcel of land encompassing all or part of Sections 21, 22, 27, 28, 29,32,and 33 of T37S,R22E,
and Sections 4,5,6,8,9,and 16 of T38S,R22E,Salt Lake Base and Meridian described as
follows (Figure 3.1-1):
The south half of the south half of Section 21;the southeast quarter of the
southeast quarter of Section 22;the northwest quarter of the northwest quarter and
lots 1 and 4 of Section 27 all that part of the southwest quarter of the northwest
quarter and the northwest quarter southwest quarter of Section 27 lying west of
Utah State Highway 163;the northeast quarter of the northwest quarter,the south
half of the northwest quarter,the northeast quarter and the south half of Section
28;the southeast quarter of the southeast quarter of Section 29;the east half of
Section 32 and all of Section 33,Township 37 South,Range 22 East,Salt Lake
Base and Meridian.Lots 1 through 4,inclusive,the south half of the north half,
the southwest quarter,the west half of the southeast quarter,the west half of the
east half of the southeast quarter and the west half of the east half of the east half
of the southeast quarter of Section 4;Lots 1 through 4,inclusive,the south half of
the north half and the south half of Section 5 (all);Lots 1 and 2,the south half of
\SECT03Rev4,O,RPTlNovember2009
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Page 3-3
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Denison Mines (USA)Corp.
Mill Reclamation Plan
the northeast quarter and the south half of Section 6 (EII2);the northeast quarter
of Section 8;all of Section 9 and all of Section 16,Township 38 South,Range 22
East,Salt Lake Base and Meridian.Additional land is controlled by 46 Mill site
claims.Total land holdings are approximately 5,415 acres.
3.2 Facilities to be Reclaimed
See Figure 3.2-1 for a general layout of the Mill yard and related facilities and the restricted area
boundary.
3.2.1 Summary of Facilities to be Reclaimed
The facilities to be reclaimed include the following:
•CellI (evaporation).CellI was previously referred to as CellI-I.It is now referred
to CellI;
•Cells 2,3 and 4A (tailings);
•Mill buildings and equipment;
•On-site contaminated areas;and
•Off-site contaminated areas (i.e.,potential areas affected by windblown tailings).
The reclamation of the above facilities will include the following:
•Placement of contaminated soils,crystals,and synthetic liner material and any
contaminated underlying soils from Cell 1 into tailings Cells 3 or 4A;
•Placement of a compacted clay liner on a portion of the CellI impoundment area to
be used for disposal of contaminated materials and debris from the Mill site
ISECT03Rev4.0.RPTINovember 2009
OEN SONf)~J
MINES
FIGURE 3.2-1
GENERAL LAYOUT SHOWING ACCESS
AND RESTRICTED AREA BOUNDARY
Denison Mines (USA)Corp.
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Page 3-5
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Denison Mines (USA)Corp.
Mill Reclamation Plan
•decommissioning (the Cell 1 Tailings Area);
•Placement of materials and debris from Mill decommissioning into tailings Cells 3 or
4A or in the Cell 1 Tailings Area;
•Placement of an engineered multi-layer cover over the entire area of Cells 2,3,4A
and the Cell 1 Tailings Area;
•Construction of runoff control and diversion channels as necessary;
•Reclamation of Mill and ancillary areas;and
•Reclamation of borrow sources.
3.2.2 Tailings and Evaporative Cells
The following subsections describe the cover design and reclamation procedures for Cells 1,2,3,
and 4A.Complete engineering details and text are presented in the Tailings Cover Design
report,Appendix D,previously submitted.Additional information is provided in Attachments D,
E and F to this submittal.
3.2.2.1 Soil Cover Design
A six-foot thick soil cover,to be placed over the uranium tailings and Mill decommissioning
materials in the Cell 1 Tailings Area,Cell 2,Cell 3 and Cell 4A,was designed using on-site
materials that will contain tailings and radon emissions in compliance with regulations of the
NRC and the State of Utah and by reference,the EPA.The cover consists of a one-foot thick
layer of clay,available from within the site boundaries (Section 16 or stockpiles on site),below
two feet of random fill (frost barrier),available from stockpiles on site.The clay is underlain by
three feet (minimum)random fill soil (platform fill),also available on site.In addition to the soil
cover,a minimum three-inch (on the cover top)to 8-inch (on the cover slopes)layer of riprap
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Denison Mines (USA)Corp.
Mill Reclamation Plan
material will be placed over the compacted random fill to stabilize slopes and provide long-term
erosion resistance (see Attachments D and H for characterization of cover materials).
Uranium tailings soil cover design requirements for regulatory compliance include:
•Attenuate radon flux to an acceptable level (20 picoCuries-per meter squared-per
second [pCi/m2/sec])(NRC,1989)and 40 CFR 61.250-61.256;
•Minimize infiltration into the reclaimed tailings cells;
•Maintain a design life of up to 1,000 years to the extent reasonably achievable,and in
any case for at least 200 years;and
•Provide long-term slope stability and geomorphic durability to withstand erosional
forces of wind,the probable maximum flood event,and a horizontal ground
acceleration ofO.lg due to seismic events.
Several models/analyses were utilized in simulating the soil cover effectiveness:radon flux
attenuation,hydrologic evaluation of infiltration,freeze/thaw effects,soil cover erosion
protection,and static and pseudostatic slope stability analyses.These analyses and results are
discussed in detail in Sections 3.3.1 through 3.3.5,and calculations are also shown in the
Tailings Cover Design report,(Appendix D,Attachment E and Attachment F).The soil cover
(from top to bottom)will consist of:(1)minimum of three inches of riprap material;(2)two feet
of compacted random fill;(3)one foot of compacted clay;and (4)minimum three feet of
compacted random fill soil.
The final grading plan is presented in Section 5,Figure 5.1-1.As indicated on the figures,the
top slope of the soil cover will be constructed at 0.2 percent and the side slopes,as well as
transitional areas between cells,will be graded to five horizontal to one vertical (5H:1V).
A minimum of three feet random fill is located beneath the compacted fill and clay layers (see
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Denison Mines (USA)Corp.
Mill Reclamation Plan
cross-sections on Figures 5.1-2 and 5.1-3).The purpose of the fill is to raise the base of the
cover to the desired subgrade elevation.In many areas,the required fill thickness will be much
greater.However,the models and analyses presented in the Tailings Cover Design report
(Appendix D)were performed conservatively,assuming only a three-foot layer.For modeling
purposes,this lower,random fill layer was considered as part ofthe soil cover for performing the
radon flux attenuation calculation,as it effectively contributes to the reduction of radon
emissions (see Section 3.3.2).The fill was also evaluated in the slope stability analysis (see
Section 3.3.6).However,it is not defined as part of the soil cover for other design calculations
(infiltration,freeze/thaw,and cover erosion).
3.2.2.2 Celli
Cell 1,used during Mill operations solely for evaporation of process liquids,is the northernmost
existing cell and is located immediately west of the Mill.It is also the highest cell in elevation,
as the natural topography slopes to the south.The drainage area above and including the cell is
216 acres.This includes drainage from the Mill site.
Cell 1 will be evaporated to dryness.The synthetic liner and raffinate crystals will then be
removed and placed in tailings Cells 3 or 4A.Any contaminated soils below the liner will be
removed and also placed in the tailings cells.Based on current regulatory criteria,the current
plan calls for excavation of the residual radioactive materials to be designed to ensure that the
concentration of radium-226 in land averaged over any area of 100 square meters does not
exceed the background level by more than:
• 5 pCi/g,averaged over the first 15 cm of soil below the surface,and
•15 pCi/g,averaged over a 15 cm thick layer of soil more than 15 cm below the
surface.
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Mill Reclamation Plan
A portion of Cell 1 (i.e.,the Cell 1 Tailings Area),adjacent to and running parallel to the
downstream cell dike,may be used for permanent disposal of contaminated materials and debris
from the Mill site decommissioning and windblown cleanup.The actual area of the Cell 1
Tailings Area needed for storage of additional material will depend on the status of Cell 3 and
4A at the time of final Mill decommissioning.A portion of the Mill area decommissioning
material may be placed in Cell 3 or 4A if space is available,but for purposes of the reclamation
design the entire quantity of contaminated materials from the Mill site decommissioning is
assumed to be placed in the Cell 1 Tailings Area.This results in approximately 10 acres of the
Cell 1 area constituting the Cell 1 Tailings Area and being utilized for permanent tailings
storage.The remaining area of Cell 1 will then be breached and converted to a sedimentation
basin.All runoff from the Cell 1 Tailings Area,the Mill area and the area immediately north of
Cell 1 will be routed into the sedimentation basin and will discharge onto the natural ground via
the channel located at the southwest corner of the basin.The channel is designed to
accommodate the PMF flood.
The HEC-1 model was used to determine the PMF and route the flood through the sedimentation
basin (Attachment G).The peak flow was determined to be 1,344 cubic feet per second (cfs).A
20-foot wide channel will discharge the flow to the natural drainage.During the local storm
PMF event,the maximum discharge through the channel will be 1,344 cfs.The entire flood
volume will pass through the discharge channel in approximately four hours.
At peak flow,the velocity in the discharge channel will be 7.45 feet per second (fps).The
maximum flow depth will be 1.45 feet.This will be a bedrock channel and the allowable
velocity for a channel of this type is 8-10 fps,therefore no riprap is required.A free board depth
of 0.5 feet will be maintained for the PMP event.
\SECT03Rev4.0.RPT\November 1009
3.2.2.3 Cell 2
Page 3-9
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Denison Mines (USA)Corp.
Mill Reclamation Plan
Cell 2 will be filled with tailings and covered with a multi-layered engineered cover to a
minimum cover thickness of six feet.The final cover will drain to the south at a 0.2 percent
gradient.
The cover will be as described in Section 3.2.2.1 above and will consist of a minimum of three
feet of random fill (platform fill),followed by a clay radon barrier of one foot in thickness,and
two feet of upper random fill (frost barrier)for protection of the radon barrier.A minimum of
three inches of rock will be utilized as armor against erosion.Side slopes will be graded to a 5:1
slope and will have 0.67 feet (8 inches)of rock armor protection.
3.2.2.4 Cell 3
Cell 3 will be filled with tailings,debris and contaminated soils and covered with the same multi-
layered engineered cover as Cell 2.
3.2.2.5 Cell4A
Cell 4A will be filled with tailings,debris and contaminated soils and covered with the same
multi-layered engineered cover as Cell 2 and Cell 3.
3.2.3 Mill Decommissioning
A general layout of the Mill area is shown in Figure 3.2.3-1.
ISECT03Rev4.0.RPTINovember2009
Drafted By'.R Van HornDesign:unknown
WHITE MESEA MILL
San Juan tate:Utah
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3.2.3.1
Page 3-11
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Mill Reclamation Plan
Mill Building,Equipment and Other 11e.(2)Byproduct Material
The uranium and vanadium sections,including ore reclaim,grinding,pre-leach,leach,CCD,SX,
and precipitation and drying circuits as well as the alternate feed circuit,decontamination pads,
scale house,sample plant,truck shop and all other structures on site will be decommissioned as
follows:
All equipment including instrumentation,process piping,electrical control and switchgear,and
contaminated structures will be removed.Contaminated concrete foundations will be
demolished and removed or covered with soil as required.Uncontaminated equipment,
structures and waste materials from Mill decommissioning may be disposed of by sale,
transferred to other company-owned facilities,transferred to an appropriate off-site solid waste
site,or disposed of in one of the tailings cells.Contaminated equipment,structures and dry
waste materials from Mill decommissioning,contaminated soils underlying the Mill areas,and
ancillary contaminated materials will be disposed of in tailings Cell 3,Cell 4A,or the Cell 1
Tailings Area.All other 11e.(2)byproduct material on site will be disposed of in Cell 3 or Cell
4A.
Debris and scrap will have a maximum dimension of 20 feet and a maximum volume of 30 cubic
feet.Material exceeding these limits will be reduced to within the acceptable limits by breaking,
cutting or other approved methods.Empty drums,tanks or other objects having a hollow volume
greater than five cubic feet will be reduced in volume by at least 70 percent.If volume reduction
is not feasible,openings shall be made in the object to allow soils or other approved material to
enter the object.
Debris and scrap will be spread across the designated areas to avoid nesting and to reduce the
volume of voids present in the placed mass.Stockpiled soils,and/or other approved material
ISECT03Rev4.0.RPnNovember2009
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Denison Mines (USA)Corp.
Mill Reclamation Plan
shall be placed over and into the scrap in sufficient amounts to fill the voids between the large
pieces and the volume within the hollow pieces to form a coherent mass.
See also Section 3.1 of Attachment A.
The estimated reclamation costs for surety are set out in Attachment C.Attachment C will be
reviewed and updated on a yearly basis.
3.2.3.2 Mill Site
Contaminated areas on the Mill site will be primarily superficial and include the ore storage area
and surface contamination of some roads.All ore and alternate feed materials will have been
previously removed from the ore stockpile area or will be transported and disposed of as
contaminated material.All contaminated materials will be excavated and be disposed of in one
of the tailings cells.The depth of excavation will vary depending on the extent of contamination
and will be governed by the criteria in Attachment A,Section 3.2.
Windblown material is defined as Mill-derived contaminants dispersed by wind to surrounding
areas.Windblown contaminated material detected by a gamma survey using the criteria in
Attachment A,Section 3.2,will be excavated and disposed of in one of the tailings cells.
Disturbed areas will be covered,graded and vegetated as required.The proposed grading plan
for the Mill site and ancillary areas is shown on Figure A-3.2-1 in Attachment A.
3.3 Design Criteria
As required by Part LB.ll of the GWDP,Denison is in the process of completing an infiltration
and contaminant transport model of the final tailings cover system to demonstrate the long-term
ISECT03Rev4.0.RPT\November2009
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Mill Reclamation Plan
ability of the cover to protect nearby groundwater quality.Upon review of such modeling,the
Executive Secretary will determine if changes to the cover system as set out in this Plan are
needed to ensure compliance with the performance criteria contained in Part LD.8 of the GWDP.
Although the modeling has not been completed,modeling results to date suggest that some
changes to the final cover design as set out in this Plan will be needed.However,as the details
of such re-design have not been finalized at this time,the approved 2000 cover design and basis
will continue to be used for this version of the Plan.This Plan will be amended in the future to
incorporate any changes to the design of the tailings cover system that result from the current
modeling effort.
The design criteria summaries in this section are adapted from Tailings Cover Design,Mill
(Titan,1996).A copy of the Tailings Cover Design report is included as Appendix D,
previously submitted.It contains all of the calculations used in design discussed in this section.
Additional design information is included in Attachments D through H to this submittal.
3.3.1 Regulatory Criteria
Information contained in 10 CFR Part 20,10 CFR Part 40 and Appendix A to 10 CFR Part 40
(which are incorporated by reference into UAC R313-24-4),and 40 CFR Part 192 were used as
criteria in final designs under this Plan.In addition,the following documents also provided
guidance:
•EPA,1994,The Hydrologic Evaluation of Landfill Peiformance (HELP)Model,
Version 3,EPA/600/R-94/168b,September;
•NRC,1989,Regulatory Guide 3.64 (Task WM-503-4)Calculation of Radon Flux
Attenuation by Earthen Uranium Mill Tailings Covers,March;
•NRC,1980,Final Staff Technical Position Design ofErosion Protection Covers for
Stabilization of Uranium Mill Tailings Sites,August;
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Mill Reclamation Plan
•NUREG/CR-4620,Nelson,J.D.,Abt,S.R.,et.al.,1986,Methodologies for
Evaluating Long-Term Stabilization Designs of Uranium Mill Tailings
Impoundments,June;
•NUREG/CR-4651 ,1987,Development ofRiprap Design Criteria by Riprap Testing
in Flumes:Phase 1,May;
•U.S.Department of Energy,1988,Effect of Freezing and Thawing on UMTRA
Covers,Albuquerque,New Mexico,October;and
•NUREG 1620,2003,Standard Review Plan for the Review ofa Reclamation Planfor
Mill Tailings Sites Under Title II ofthe Uranium Mill Tailings Radiation Control Act
of1978.
As mentioned above,the requirements set out in Part I.D.8 of the GWDP require that the cover
system for each tailings cell will be designed and constructed to meet the following minimum
performance requirements for a period of not less than 200 years:
•Minimize the infiltration of precipitation or other surface water into the tailings,
including,but not limited to the radon barrier;
•Prevent the accumulation of leachate head within the tailings waste layer that could
rise above or over-top the maximum FML elevation internal to any disposal cell,i.e.
create a "bathtub"effect;and
•Ensure that groundwater quality at the compliance monitoring wells does not exceed
the GWQSs or GWCLs specified in Part I.e.1 and Table 2 of the GWDP.
Upon completion of the Infiltration Analysis,this Plan will be revised as necessary to ensure
compliance with these requirements.
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3.3.2 Radon Flux Attenuation
The EPA rules in 40 CFR Part 192 require that a "uranium tailings cover be designed to produce
reasonable assurance that the radon-222 release rate would not exceed 20 pCi/m2/sec for a period
of 1,000 years to the extent reasonably achievable and in any case for at least 200 years when
averaged over the disposal area over at least a one year period"(NRC,1989).NRC regulations
presented in 10 CFR Part 40 (incorporated by reference into UAC R313-24-4)also restrict radon
flux to less than 20 pCi/m2/sec.The following sections present the analyses and design for a soil
cover which meets this requirement.
3.3.2.1 Predictive Analysis
The soil cover for the tailings cells at the Mill was evaluated for attenuation of radon gas using
the digital computer program,RADON,presented in the NRC's Regulatory Guide 3.64 (Task
WM 503-4)entitled Calculation of Radon Flux Attenuation by Earthen Uranium Mill Tailings
Covers.The RADON model calculates radon-222 flux attenuation by multi-layered earthen
uranium Mill tailings covers,and determines the minimum cover thickness required to meet
NRC and EPA standards.The RADON model uses the following soil properties in the
calculation process:
•Soil layer thickness [centimeters (em)];
•Soil porosity (percent);
•Density [grams-per-cubic centimeter (gm/cm3)];
•Weight percent moisture (percent);
•Radium activity (piC/g);
•Radon emanation coefficient (unitless);and
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•Diffusion coefficient [square centimeters-per-second (cm2/sec)].
Physical and radiological properties for tailings and random fill were analyzed by Chen and
Associates (1987)and Rogers and Associates (1988).Clay physical data from Section 16 was
analyzed by Advanced Terra Testing (1996)and Rogers and Associates (1996).Additional
testing of cover materials was performed in April 1999.The test results are included 111
Attachment D.See Appendix D,previously submitted,for additional laboratory test results.
The RADON model was performed for the following cover section (from top to bottom):
•two feet compacted random fill (frost barrier);
•one foot compacted clay;and
• a minimum of three feet random fill occupying the freeboard space between
the tailings and clay layer (platform fill).
The top one foot of the lower random fill,clay layer and two foot upper random fill are
compacted to 95 percent maximum dry density.The top riprap layer was not included as part of
the soil cover for the radon attenuation calculation.
The most current RADON modeling is included in Attachment F.
The results of the RADON modeling exercise,based on two different compaction scenarios,
show that the uranium tailings cover configuration will attenuate radon flux emanating from the
tailings to a level of 18.2 to 19.8 pCi/m2/sec.This number was conservatively calculated as it
takes into account the freeze/thaw effect on the uppermost part (6.8 inches)of the cover (Section
3.3.4).The soil cover and tailings parameters used to run the RADON model,in addition to the
RADON input and output data files,are presented in Appendix D as part of the Radon
Calculation brief (See Appendix B in the Tailings Cover Design report,previously submitted in
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its entirety as Appendix D)and the most current model included as Attachment F to this
submittal.Based on the model results,the soil cover design of six-foot thickness will meet the
requirements of 40 CFR Part 192 and 10 CFR Part 40.
3.3.2.2 Empirical Data
Radon gas flux measurements have been made at the Mill tailings piles over Cells 2 and 3 (see
Appendix D,previously submitted).Currently Cell 2 is fully covered and Cell 3 is partially
covered with three to four feet of random fill.During the period 2004 through 2007,Cell 2 was
only partially covered with such random fill.Radon flux measurements,averaged over the
covered areas,were as follows (Denison 2004-2008):
Table 3.3-1
Average Radon Flux From Tailings Cells 2004·2008
(pCi/m2/sec)
2004 2005 2006 2007 2008
Cell 2 13.9 7.1 7.9 13.5 3.9
Cell 3 10.8 6.2 10.0 8.9 3.1
Empirical data suggest that the random fill cover,alone,is currently providing an effective
barrier to radon flux.Thus,the proposed tailings cover configuration,which is thicker,moisture
adjusted,contains a clay layer,and is compacted,is expected to attenuate the radon flux to a
level below that predicted by the RADON model.The field radon flux measurements confirm
the conservatism of the cover design.This conservatism is useful,however,to guarantee
compliance with applicable regulations under long term climatic conditions over the required
design life of 200 to 1,000 years.
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3.3.3 Infiltration Analysis
The tailings ponds at the Mill are lined with synthetic geomembrane liners which under certain
climatic conditions,could potentially lead to the long-term accumulation of water from
infiltration of precipitation.Therefore,the soil cover was evaluated to estimate the potential
magnitude of infiltration into the capped tailings ponds.The Hydrologic Evaluation of Landfill
Performance (HELP)model,Version 3.0 (EPA,1994)was used for the analysis.HELP is a
quasi two-dimensional hydrologic model of water movement across,into,through,and out of
capped and lined impoundments.The model utilizes weather,soil,and engineering design data
as input to the model,to account for the effects of surface storage,snowmelt,run-off,infiltration,
evapotranspiration,vegetative growth,soil moisture storage,lateral subsurface drainage,and
unsaturated vertical drainage on the specific design,at the specified location.
The soil cover was evaluated based on a two-foot compacted random fill layer over a one-foot
thick,compacted clay layer.The soil cover layers were modeled based on material placement at
a minimum of 95 percent of the maximum dry density,and within two percent of the optimum
moisture content per American Society for Testing and Materials (ASTM)requirements.The
top riprap layer and the bottom random fill layer were not included as part of the soil cover for
infiltration calculations.These two layers are not playing any role in controlling the infiltration
through the cover material.
The random fill will consist of clayey sands and silts with random amounts of gravel and rock-
size materials.The average hydraulic conductivity of several samples of random fill was
calculated,based on laboratory tests,to be 8.87 x 10-7 cm/sec.The hydraulic conductivity of the
clay source from Section 16 was measured in the laboratory to be 3.7 x 10-8 cm/sec.
Geotechnical soil properties and laboratory data are presented in Appendix D.
Key HELP model input parameters include:
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•Blanding,Utah,monthly temperature and precipitation data,and HELP model default
solar radiation,and evapotranspiration data from Grand Junction,Colorado.Grand
Junction is located northeast of Blanding in similar climate and elevation;
•Soil cover configuration identifying the number of layers,layer types,layer thickness,
and the total covered surface area;
•Individual layer material characteristics identifying saturated hydraulic conductivity,
porosity,wilting point,field capacity,and percent moisture;and
•Soil Conservation Service runoff curve numbers,evaporative zone depth,maximum
leaf area index,and anticipated vegetation quality.
Water balance results,as calculated by the HELP model,indicate that precipitation would either
run-off the soil cover or be evaporated.Thus,model simulations predict zero infiltration of
surface water through the soil cover,as designed.These model results are conservative and take
into account the freeze/thaw effects on the uppermost part (6.8 inches)of the cover (See Section
1.3 of the Tailings Cover Design report,Appendix D).The HELP model input and output for the
tailings soil cover are presented in the HELP Model calculation brief included in previously
submitted Appendix D.
As mentioned above,potential infiltration into the tailings cap is currently being remodeled in
the Infiltration Analysis.Any changes to this Plan that are required as a result of such
remodeling will be incorporated into a subsequent revision to this Plan.
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3.3.4 Freeze/Thaw Evaluation
The tailings soil cover of one foot of compacted clay covered by two feet of random fill was
evaluated for freeze/thaw impacts.Repeated freeze/thaw cycles have been shown to increase the
bulk soil permeability by breaking down the compacted soil structure.
The soil cover was evaluated for freeze/thaw effects using the modified Berggren equation as
presented in Aitken and Berg (1968)and recommended by the NRC (U.S.Department of
Energy,1988).This evaluation was based on the properties of the random fill and clay soil,and
meteorological data from both Banding,Utah and Grand Junction,Colorado.
The results of the freeze/thaw evaluation indicate that the anticipated maximum depth of frost
penetration on the soil cover would be less than 6.8 inches.Since the random fill layer is two
feet thick,the frost depth would be confined to this layer and would not penetrate into the
underlying clay layer.The performance of the soil cover to attenuate radon gas flux below the
prescribed standards,and to prevent surface water infiltration,would not be compromised.The
input data and results of the freeze/thaw evaluation are presented in the Effects of Freezing on
Tailings Covers Calculation brief included as Appendix E in the Tailings Cover Design report,
which was previously submitted as Appendix D.
3.3.5 Soil Cover Erosion Protection
A riprap layer was designed for erosion protection of the tailings soil cover.According to NRC
guidance,the design must be adequate to protect the soil/tailings against exposure and erosion
for 200 to 1,000 years (NRC,1990).Currently,there is no standard industry practice for
stabilizing tailings for 1,000 years.However,by treating the embankment slopes as wide
channels,the hydraulic design principles and practices associated with channel design were used
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to design stable slopes that will not erode.Thus,a conservative design based on NRC guidelines
was developed.Engineering details and calculations are summarized in the Erosion Protection
Calculation brief provided in Appendix F in the Tailings Cover Design report,which was
previously submitted as Appendix D.
Riprap cover specifications for the top and side slopes were determined separately,as the side
slopes are much steeper than the slope of the top of the cover.The size and thickness of the
riprap on the top of the cover was calculated using the Safety Factor Method (NUREG/CR-4651,
1987),while the Stephenson Method (NUREG/CR-4651,1987)was used for the side slopes.
These methodologies were chosen based on NRC recommendations (1990).
By the Safety Factor Method,riprap dimensions for the top slope were calculated in order to
achieve a slope "safety factor"of 1.1.For the top of the soil cover,with a slope of 0.2 percent,
the Safety Factor Method indicated a median diameter (Dso)riprap of 0.28 inches is required to
stabilize the top slope.However,this dimension must be modified based on the long-term
durability of the specific rock type to be used in construction.The suitability of rock to be used
as a protective cover has been assessed by laboratory tests to determine the physical
characteristics of the rocks (See Attachment H).The North pit source has an over sizing factor
of 9.85%.The riprap sourced from this pit should have a D50 size of at least 0.31 inches and
should have an overall layer thickness of at least three inches on the top of the cover.
Riprap dimensions for the side slopes were calculated using Stephenson Method equations.The
side slopes of the cover are designed at 5H:1V.At this slope,Stephenson's Method indicated the
unmodified riprap Dso of 3.24 inches is required.Again,assuming that the North pit material
will be used,the modified Dso size of the riprap should be at least 3.54 inches with an overall
layer thickness of at least 8 inches.
The potential of erosion damage due to overland flow,sheetflow,and channel scouring on the
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top and side slopes of the cover,including the riprap layer,has been evaluated.Overland flow
calculations were performed using site meteorological data,cap design specifications,and
guidelines set by the NRC (NUREG/CR-4620,1986).These calculations are included in
Appendix F of the Tailings Cover Design report (Appendix D previously submitted).According
to the guidelines,overland flow velocity estimates are to be compared to "permissible
velocities,"which have been suggested by the NRC,to determine the potential for erosion
damage.When calculated,overland flow velocity estimates exceed permissible velocities,
additional cover protection should be considered.The permissible velocity for the tailings cover
(including the riprap layer)is 5.0 to 6.0 feet-per-second (fUsec.)(NUREG/CR-4620).The
overland flow velocity calculated for the top of the cover is less than 2.0 fUsec.,and the
calculated velocity on the side slopes is 4.9 fUsec.A rock apron will be constructed at the toe of
high slopes and in areas where runoff might be concentrated (See Figure A-5.1-4).The design of
the rock aprons is detailed in Attachment G.
3.3.6 Slope Stability Analysis
Static and pseudostatic analyses were performed to establish the stability of the side slopes of the
tailings soil cover.The side slopes are designed at an angle of 5H:1V.Because the side slope
along the southern section of Cell 4A is the longest and the ground elevation drops rapidly at its
base,this slope was determined to be critical and is thus the focus of the stability analyses.
The computer software package GSLOPE,developed by MITRE Software Corporation,has been
used for these analyses to determine the potential for slope failure.GSLOPE applies Bishop's
Method of slices to identify the critical failure surface and calculate a factor of safety (FOS).
The slope geometry and properties of the construction materials and bedrock are input into the
model.These data and drawings are included in the Stability Analysis of Side Slopes
Calculation brief included in Appendix G of the Tailings Cover Design report.For this analysis,
competent bedrock is designated at 10 feet below the lowest point of the foundation [i.e.,at a
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5,540-foot elevation above mean sea level (msl)].This is a conservative estimate,based on the
borehole logs supplied by Chen and Associates (1979),which indicate bedrock near the surface.
3.3.6.1 Static Analysis
For the static analysis,a Factor of Safety ("FOS")of 1.5 or more was used to indicate an
acceptable level of stability.The calculated FOS is 2.91,which indicates that the slope should
be stable under static conditions.Results of the computer model simulations are included in
Appendix G of the Tailings Cover Design report.
3.3.6.2 Pseudostatic Analysis (Seismicity)
The slope stability analysis described above was repeated under pseudostatic conditions in order
to estimate a FOS for the slope when a horizontal ground acceleration of O.lOg is applied.The
slope geometry and material properties used in this analysis are identical to those used in the
stability analysis.A FOS of 1.0 or more was used to indicate an acceptable level of stability
under pseudostatic conditions.The calculated FOS is 1.903,which indicates that the slope
should be stable under dynamic conditions.Details of the analysis and the simulation results are
included in Appendix G of the Tailings Cover Design report.
In June of 1994,Lawrence Livermore National Laboratory ("LLNL")published a report entitled
Seismic Hazard Analysis of Title II Reclamation Plans,(Lawrence Livermore National
Laboratory,1994)which included a section on seismic activity in southern Utah.In the LLNL
report,a horizontal ground acceleration of 0.12g was proposed for the White Mesa site.The
evaluations made by LLNL were conservative to account for tectonically active regions that
exist,for example,near Moab,Utah.Although,the LLNL report states that II...[Blanding]is
located in a region known for its scarcity of recorded seismic events,II the stability of the cap
design slopes using the LLNL factor was evaluated.The results of a sensitivity analysis reveal
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that when considering a horizontal ground acceleration of 0.12g,the calculated FOS is 1.778
which is still above the required value of 1.0,indicating adequate safety under pseudostatic
conditions.This analysis is also included in Appendix G of the Tailings Cover Design report.A
probabilistic seismic risk analysis (See Attachment E)was performed in April 1999 during an
evaluation of cover stability.
3.3.7 Soil Cover-Animal Intrusion
To date,the Mill site has experienced only minor problems with burrowing animals.In the long
term,no measures short of continual annihilation of target animals can prevent burrowing.
However,reasonable measures will discourage burrowing including:
•Total cover thickness of at least six-feet;
•Compaction of the upper three feet of soil cover materials to a m1l11mUm of 95
percent,and the lower three feet to 80-90 percent,based on a standard Proctor
(ASTM D-698);and
•Riprap placed over the compacted random fill material.
3.3.8 Cover Material/Cover Material Volumes
Construction materials for reclamation will be obtained from on-site locations.Fill material will
be available from the stockpiles that were generated from excavation of the cells for the tailings
facility.If required,additional materials are available locally to the west of the site.A clay
material source,identified in Section 16 at the southern end of the Mill site,will be used to
construct the one-foot compacted clay layer.Riprap material will be produced from off-site
sources.
Detailed material quantities and reclamation cost calculations are provided in Attachment C,
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Cost Estimates for Reclamation of Mill Facilities,as part of the volume and costing exercise.
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WMRCPLNIATA2Rev4_0 November2009
ATTACHMENT A
PLANS AND SPECIFICATIONS
FOR
RECLAMATION
OF
WHITE MESA FACILITIES
BLANDING,UTAH
PREPARED BY
DENISON MINES (USA)CORP.
INDEPENDENCE PLAZA
1050 17TH STREET,SUITE 950
DENVER,CO 80265
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TABLE OF CONTENTS
Page No.
1.0 GENERAL A-I
2.0 CELL 1 RECLAMATION A-l
2.1 Scope A-I
2.2 Removal ofContaminated Materials A-I
2.2.1 Raffinate Crystals A-I
2.2.2 Synthetic Liner A-2
2.2.3 Contaminated Soils A-2
2.3 Cell 1 Tailings Area A-3
2.3.1 General A-3
2.3.2 Materials A-3
2.3.3 Borrow Sources A-3
2.4 Liner Construction A-3
2.4.1 General A-3
2.4.2 Placement and Compaction A-4
2.4.2.1 Methods A-4
2.4.2.2 Moisture and Density ControL A-5
2.5 Sedimentation Basin A-6
3.0 MILL DECOMMISSIONING A-8
3.1 Mill A-8
3.2 Mill Site A-I0
3.3 Windblown Contamination A-I0
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TABLE OF CONTENTS (continued)Page No.
3.3.1 Guidance A-13
3.3.2 General Methodology A-13
3.3.3 Scoping Survey A-14
3.3.4 Characterization and Remediation Control Surveys A-16
3.3.5 Final Survey A-17
3.3.6 Employee Health and Safety A-17
3.3.7 Environment Monitoring A-18
3.3.8 Quality Assurance A-18
4.0 PLACEMENT METHODS A-21
4.1 Scrap and Debris A-21
4.2 Contaminated Soils and Raffinate Crystals A-22
4.3 Compaction Requirements A-22
5.0 RECLAMATION CAP -CELLS .L..2,3 AND 4A A-23
5.1 Earth Cover A-23
5.2 Materials A-23
5.2.1 Physical Properties A-23
5.2.2 Borrow Sources A-29
5.3 Cover Construction A-29
5.3.1 General A-29
5.3.2 Placement and Compaction A-30
5.3.2.1 Methods A-30
5.3.2.2 Moisture and Density ControL A-31
5.4 Monitoring Cover Settlement A-32
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TABLE OF CONTENTS (continued)Page No.
5.4.1 Temporary Settlement Plates A-32
5.4.1.1 General A-32
5.4.1.2 Installation A-32
5.4.1.3 Monitoring Settlement Plates A-33
6.0 ROCK PROTECTION A-35
6.1 General A-35
6.2 Materials A-36
6.3 Placement A-37
7.0 QUALITY CONTROL/QUALITY ASSURANCE A-37
7.1 Quality Plan A-37
7.2 Implementation A-38
7.3 Quality Control Procedures A-38
7.4 Frequency ofQuality Control Tests A-38
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1.0 GENERAL
The specifications presented in this section cover the reclamation ofthe Mill facilities.
2.0 CELL I RECLAMATION
2.1 Scope
The reclamation of Cell 1 (previously referred to as Cell I-I)consists of evaporating the cell to
dryness,removing raffinate crystals,synthetic liner and any contaminated soils,and constructing
a clay lined area adjacent to and parallel with the existing Cell 1 dike for permanent disposal of
contaminated material and debris from the Mill site decommissioning,referred to as the Cell 1
Tailings Area.A sedimentation basin will then be constructed and a drainage channel provided.
2.2 Removal ofContaminated Materials
2.2.1 Raffinate Crystals
Raffinate crystals will be removed from Cell 1 and transported to the tailings cells.It is
anticipated that the crystals will have a consistency similar to a granular material when brought
to the cells,with large crystal masses being broken down for transport.Placement ofthe crystals
will be performed as a granular fill,with care being taken to avoid nesting of large sized
material.Voids around large material will be filled with finer material or the crystal mass
broken down by the placing equipment.Actual placement procedures will be evaluated by the
QC officer during construction as crystal materials are brought and placed in the cells.
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2.2.2 Synthetic Liner
The PVC liner will be cut up,folded (when necessary),removed from Cell 1,and transported to
the tailings cells.The liner material will be spread as flat as practical over the designated area.
After placement,the liner will be covered as soon as possible with at least one foot of soil,
crystals or other materials for protection against wind,as approved by the QC officer.
2.2.3 Contaminated Soils
The extent of contamination of the Mill site will be detennined by a scintillometer survey.If
necessary,a correlation between scintillometer readings and U-nat/Radium-226 concentrations
will be developed.Scintillometer readings can then be used to define cleanup areas and to
monitor the cleanup.Soil sampling will be conducted to confinn that the cleanup results in a
concentration ofRadium-226 averaged over any area of 100 square meters that does not exceed
the background level by more than:
5 pCi/g averaged over the first 15 cm of soils below the surface,and
15 pCi/g averaged over a 15 em thick layer of soils more than 15 em below the surface
Where surveys indicate the above criteria have not been achieved,the soil will be removed to
meet the criteria.Soil removed from Cell 1 will be excavated and transported to the tailings
cells.Placement and compaction will be in accordance with Section 4.0 of these Plans and
Specifications.
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2.3 Cell 1 Tailings Area
2.3.1 General
A clay lined area will be constructed adjacent to and parallel with the existing Cell 1 dike for
permanent disposal ofcontaminated material and debris from the Mill site decommissioning (the
Cell 1 Tailings Area).The area will be lined with 12 inches of clay prior to placement of
contaminated materials and installation ofthe final reclamation cap.
2.3.2 Materials
Clays will have at least 40 percent passing the No.200 sieve.The minimum liquid limit of these
soils will be 25 and the plasticity index will be 15 or greater.These soils will classify as CL,SC
or CH materials under the Unified Soil Classification System.
2.3.3 Borrow Sources
Clay will be obtaned from suitable materials stockpiled on site during cell construction or will be
imported from borrow areas located in Section 16,T38S,R22E,SLM.
2.4 Liner Construction
2.4.1 General
Placement of clay liner materials will be based on a schedule determined by the availability of
contaminated materials removed from the Mill decommissioning area in order to maintain
optimum moisture content ofthe clay liner prior to placing of contaminated materials
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2.4.2 Placement and Compaction
2.4.2.1 Methods
Placement of fill will be monitored by a qualified individual with the authority to stop work and
reject material being placed.The full 12 inches of the clay liner fill will be compacted to 95%
maximum dry density per ASTM D 698.
In all layers of the clay liner will be such that the liner will,as far as practicable,be free of
lenses,pockets,streaks or layers of material differing substantially in texture,gradation or
moisture content from the sUlTounding material.Oversized material will be controlled through
selective excavation of stockpiled material,observation of placement by a qualified individual
with authority to stop work and reject material being placed and by culling oversized material
from the fill.
If the moisture content of any layer of clay liner is outside ofthe Allowable Placement Moisture
Content specified in Table A-5.3.2.1-1,it will be moistened and/or reworked with a halTow,
scarifier,or other suitable equipment to a sufficient depth to provide relatively uniform moisture
content and a satisfactory bonding surface before the next succeeding layer of clay material is
placed.If the compacted surface of any layer of clay liner material is too wet,due to
precipitation,for proper compaction of the earthfill material to be placed thereon,it will be
reworked with halTow,scarifier or other suitable equipment to reduce the moisture content to the
required level shown in Table A-5.3.2.1-1.It will then be recompacted to the earthfill
requirements.
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No clay material will be placed when either the materials,or the underlying material,is frozen or
when ambient temperatures do not permit the placement or compaction of the materials to the
specified density,without developing frost lenses in the fill.
2.4.2.2 Moisture and Density Control
As far as practicable,the materials will be brought to the proper moisture content before
placement,or moisture will be added to the material by sprinkling on the fill.Each layer of the
fill will be conditioned so that the moisture content is uniform throughout the layer prior to and
during compaction.The moisture content of the compacted liner material will be within the
limits of standard optimum moisture content as shown in Table A-5.3.2.1-1.Material that is too
dry or too wet to permit bonding of layers during compaction will be rejected and will be
reworked until the moisture content is within the specified limits.Reworking may include
removal,re-harrowing,reconditioning,rerolling,or combinations ofthese procedures.
Density control of compacted clay will be such that the compacted material represented by
samples having a dry density less than the values shown in Table A-5.3.2.1-1 will be rejected.
Such rejected material will be reworked as necessary and rerolled until a dry density equal to or
greater than the percent ofits standard Proctor maximum density shown in Table A-5.3.2.1-1.
To determine that the moisture content and dry density requirements of the compacted liner
material are being met,field and laboratory tests will be made at specified intervals taken from
the compacted fills as specified in Section 7.4,"Frequency ofQuality Control Tests."
WMRCPLN\ATA2Rev4_0November2009
Page A-6
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
2.5 Sedimentation Basin
Cell 1 will then be breached and constructed as a sedimentation basin.All runoff from the Mill
area and immediately north of the cell will be routed into the sedimentation basin and will
discharge onto the natural ground via the channel located at the southwest comer of the basin.
The channel is designed to accommodate the PMF flood.
A sedimentation basin will be constructed in Cell 1 as shown in Figure A-2.2.4-1.Grading will
be performed to promote drainage and proper functioning ofthe basin.The drainage channel out
ofthe sedimentation basin will be constructed to the lines and grades as shown.
WMRCPLNIATA2Rcv4_0 November 2009
Dmlted Itt:D.Sledd
YARD
t or:unknown
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IIII+=tr.::5E32jjI"L::::-::::-:::-~-J
Denison Mines (USA)Corp.OENISONI)JJ
MINES
"""SIONS Project WHITE MESA MILL
Date County:San Juan e:utah
6-JO-OO DIS Location:
10-J0 as FIGURE A-2.2.4-1
SEDIMENTATION BASIN DETAIL
•
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200
I
+5620.5
SCALE IN FEET
100 50 0,100
I I I
+5618.7
+5610.8
+5639.3
______~~_~~l~§_~~l~l ·~~~~--~-----=~~~~~~~1rnl~~~~~~~~~_
I
~~~t....---ll....-.........._=~_............;;;;=__.......
Page A-8
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
3.0 MILL DECOMMISSIONING
The following subsections detail decommissioning plans for the Mill buildings and equipment;
the Mill site;and windblown contamination.
3.1 Mill
The uranium and vanadium processing areas of the Mill,including all equipment,structures and
support facilities,will be decommissioned and disposed of in tailings or buried on site as
appropriate.All equipment,including tankage and piping,agitation equipment,process control
instrumentation and switchgear,and contaminated structures will be cut up,removed and buried
in tailings prior to final cover placement.Concrete structures and foundations will be
demolished and removed or covered with soil as appropriate.These decommissioned areas
would include,but not be limited to the following:
Coarse ore bin and associated equipment,conveyors and structures.
Grind circuit including semi-autogeneous grind (SAG)Mill,screens,pumps and
cyclones.
The three preleach tanks to the east of the Mill building,including all tankage,
agitation equipment,pumps and piping.
The seven leach tanks inside the main Mill building,including all agitation
equipment,pumps and piping.
The counter-current decantation (CCD)circuit including all thickeners and
equipment,pumps and piping.
Uranium precipitation circuit,including all thickeners,pumps and piping.
WMRCPLNIATA2Rev4_0 November 2009
Page A-9
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
The two yellow cake dryers and all mechanical and electrical support equipment,
including uranium packaging equipment.
The clarifiers to the west of the Mill building including the preleach thickener
(PLT)and claricone.
The boiler and all ancillary equipment and buildings.
The entire vanadium precipitation,drying and fusion circuit.
All external tankage not included in the previous list including reagent tanks for
the storage of acid,ammonia,kerosene,water,dry chemicals,etc.and the
vanadium oxidation circuit.
The uranium and vanadium solvent extraction (SX)circuit including all SX and
reagent tankage,mixers and settlers,pumps and piping.
The SX building.
The Mill building.
The Alternate Feed processing circuit
Decontamination pads
The office building.
The shop and warehouse building.
The sample plant building.
The Reagent storage building.
The sequence of demolition would proceed so as to allow the maximum use of support areas of
the facility such as the office and shop areas.It is anticipated that all major structures and large
equipment will be demolished with the use of hydraulic shears.These will speed the process,
provide proper sizing of the materials to be placed in tailings,and reduce exposure to radiation
and other safety hazards during the demolition.Any uncontaminated or decontaminated
equipment to be considered for salvage will be released in accordance with the terms of License
WMRCPLNIATA2Rev4_0 November2009
Page A-I0
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Condition 9.10.As with the equipment for disposal,any contaminated soils from the Mill area
will be disposed ofin the tailings facilities in accordance with Section 4.0 ofthe Specifications.
3.2 Mill Site
Contaminated areas on the Mill site will be primarily superficial and include the ore storage area
and surface contamination of some roads.All ore and alternate feed materials will have been
previously removed from the ore stockpile area.All contaminated materials will be excavated
and be disposed in one of the tailings cells in accordance with Section 4.0 of these Plans and
Specifications.The depth of excavation will vary depending on the extent of contamination and
will be based on the criteria in Section 2.2.3 ofthese Plans and Specifications.All other 11 e.(2)
byproduct materials will be disposed ofin the tailings cells.
All ancillary contaminated materials including pipelines will be removed and will be disposed of
by disposal in the tailing cells in accordance with Section 4.0 ofthese Plans and Specifications.
Disturbed areas will be covered,graded and vegetated as required.The proposed grading plan
for the Mill site and ancillary areas is shown on Figure A-3.2-1.
3.3 Windblown Contamination
Windblown contamination is defined as Mill derived contaminants dispersed by the wind to
sunounding areas.The potential areas affected by windblown contamination will be surveyed
using scintillometers taking into account historical operational data from the Semi-annual
Effluent Reports and other guidance such as prevailing wind direction and historical background
data.Areas covered by the existing Mill facilities and ore storage pad,the tailings cells and
WMRCPLNIATA2Rev4_0 November 2009
Page A-II
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
adjacent stockpiles ofrandom fill,clay and topsoil,will be excluded fi-om the survey.Materials
from these areas will be removed in conjunction with final reclamation and decommissioning of
the Mill and tailings cells.
WMRCPLNIATA2Rev4_0 November 2009
f1 1e6 £5642.6
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NOTES
1.Topopaph,y from urlll1 photoar-phy dated Au&:.23,HI03
2.Actual field conditioDll may "Yuy from feature,lhown
3.Actual:final conto1U'll wW upend 011.erlant of dictated
rnuJ:t..of t1.ld radloDlllt.rlc mrnyII.
•.Contour Intolrnl '"2 rlet
DrafI8d By.R.Van HomDesign:
FIGURE A-3.2-1
MILL SITE AND ORE PAD
FINAL GRADING PLAN
Feb.,1997DlII8:
REV.DATE BY REVISIONS OENISONI)~~No.Denison Mines (USA)Corp.,.ffi 11/1'/~HAD Change title block to ruc MINES
Project:WHITE MESA MILL
uja/a.DLS Change title block to Denillon County:I",San Juan Utah
,,
,,
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Page A-13
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
3.3.1 Guidance
The necessity for remedial actions will be based upon an evaluation prepared by Denison,and
approved by the Executive Secretary,ofthe potential health hazard presented by any windblown
materials identified.The assessment will be based upon analysis of all pertinent radiometric and
past land use information and will consider the feasibility,cost-effectiveness,and environmental
impact of the proposed remedial activities and final land use.All methods utilized will be
consistent with the guidance contained in "Multi-Agency Radiation Survey and Site
Investigation Manual"(MARSSIM)(NUREG-1575,Revision 1).
3.3.2 General Methodology
The facility currently monitors soils for the presence of Ra-226,Th-230 and natural uranium,
such results being presented in the second semi-annual effluent repoti for each year.Guideline
values for these materials will be determined and will fonn the basis for the cleanup of the Mill
site and surrounding areas.For purposes of detelmining possible windblown contamination,
areas used for processing ofuranium ores as well as the tailings and evaporative facilities will be
excluded from the initial scoping survey,due to their proximity to the uranium recovery
operations.Those areas include:
The Mill building,including CCD,Pre-Leach Thickener area,uranium drying and
packaging,clarifying,and preleach.
The SX building,including reagent storage immediately to the east of the SX
building.
The alternate feed circuit.
The ore pad and ore feed areas.
Tailings Cells No.2,3,and 4A.
WMRCPLNlATA2Rev4_0 November 2009
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Evaporation Cell No.1.
The remaining areas of the Mill will be divided up into two areas for purposes of windblown
determinations:
The restricted area,less the above areas;and,
A halo around the restricted area.
Areas within the restricted area,as shown on Figure 3.2-1 will be initially surveyed on a 30 x 30
meter grid as described below in Section 3.3.3.The halo around the suspected area of
contamination will also be initially surveyed on a 50 x 50 meter grid using methodologies
described below in Section 3.3.3.Any areas which are found to have elevated activity levels will
be further evaluated as described in Sections 3.3.4 and 3.3.5.Initial surveys of the areas
surrounding the Mill and tailings area have indicated potential windblown contamination only to
the north and east of the Mill ore storage area,and to the southwest of Cell 3,as indicated on
Figure 3.2-1.
3.3.3 Scoping Survey
Areas contaminated through process activities or windblown contamination from the tailings
areas will be remediated to meet applicable cleanup criteria for Ra-226,Th-230 and natural
uranium.Contaminated areas will be remediated such that the residual radionuclides remaining
on the site,that are distinguishable from background,will not result in a dose that is greater than
that which would result from the radium soil standard (5 pCi/gram above background).
Soil cleanup verification will be accomplished by use of several calibrated beta/gamma
instruments.Multiple instruments will be maintained and calibrated to ensure availability during
Remediation efforts.
WMRCPLNIATA2Rev4_0 November2009
Page A-15
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Initial soil samples will be chemically analyzed to detelmine on-site correlation between the
gamma readings and the concentration ofradium,thorium and uranium,in the samples.Samples
will be taken from areas known to be contaminated with only processed uranium materials (i.e.
tailings sand and windblown contamination)and areas in which it is suspected that unprocessed
uranium materials (i.e.ore pad and windblown areas downwind ofthe ore pad)are present.The
actual number of samples used will depend on the correlation of the results between gamma
readings and the Ra-226 concentration.A minimum of 35 samples of windblown tailings
material,and 15 samples of unprocessed ore materials is proposed.Adequate samples will be
taken to ensure that graphs can be developed to adequately project the linear regression lines and
the calculated upper and lower 95 percent confidence levels for each of the instruments.The 95
percent confidence limit will be used for the guideline value for correlation between gamma
readings and radium concentration.Because the unprocessed materials are expected to have
proportionally higher values of uranium in relation to the radium and thorium content,the
correlation to the beta!gamma readings are expected to be different than readings from areas
known to be contaminated with only processed materials.Areas expected to have contamination
from both processed and unprocessed materials will be evaluated on the more conservative
correlation,or will be cleaned to the radium standard which should ensure that the uranium is
removed.
Radium concentration in the samples should range from 25%ofthe guideline value (5 pCi/gram
above background)for the area of interest,through the anticipated upper range of radium
contamination.Background radium concentrations have been gathered over a 16 year period at
sample station BHV-3 located upwind and 5 miles west of the Mill.The radium background
concentration from this sampling is 0.93 pCi/gram.This value will be used as an interim value
for the background concentration.Prior to initiating cleanup of windblown contamination,a
systematic soil sampling program will be conducted in an area within 3 miles of the site,in
WMRCPLNIATA2Rev4_0 November2009
Page A-16
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
geologically similar areas with soil types and soil chemistry similar to the areas to be cleaned,to
determine the average background radium concentration,or concentrations,to be ultimately used
for the cleanup.
An initial scoping survey for windblown contamination will be conducted based on analysis of
all pertinent radiometric and past land use information.The survey will be conducted using
calibrated beta/gamma instruments on a 30 meter by 30 meter grid.Additional surveys will be
conducted in a halo,or buffer zone,around the projected impact area.The survey in the buffer
area will be conducted on a 50 meter by 50 meter grid.Grids where no readings exceed 75%of
the guideline value (5 pCi/gram above background)will be classified as unaffected,and will not
require remediation.
The survey will be conducted by walking a path within the grid as shown in Figure A-3.3-1.
These paths will be designed so that a minimum of 10%ofthe area within the grid sidelines will
be scanned,using an average coverage area for the instrument of one (1)meter wide.The
instrument will be swung from side to side at an elevation of six (6)inches above ground level,
with the rate of coverage maintained within the recommended duration specified by the specific
instrument manufacturer.In no case will the scanning rate be greater than the rate of 0.5 meters
per second (m/sec)specified in NUREG/CR-5849 (NRC,1992).
3.3.4 Characterization and Remediation Control Surveys
After the entire subarea has been classified as affected or unaffected,the affected areas will be
further scanned to identify areas of elevated activity requiring cleanup.Such areas will be
flagged and sufficient soils removed to,at a minimum,meet activity criteria.Following such
remediation,the area will be scanned again to ensure compliance with activity criteria.A
WMRCPLNIATA2Rev4_0 November 2009
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
calibrated beta/gamma instrument capable of detecting activity levels of less than or equal to 25
percent ofthe guideline values will be used to scan all the areas of interest.
3.3.5 Final Survey
After removal ofcontamination,final surveys will be taken over remediated areas.Final surveys
will be calculated and documented within specific 10 meter by 10 meter grids with sample point
locations as shown in Figure A-3.3.2.Soil samples from 10%of the surveyed grids will be
chemically analyzed to confirm the initial correlation factors utilized and confirm the success of
cleanup effort for radium,thorium and uranium.Ten (l0)percent of the samples chemically
analyzed will be split,with a duplicate sent to an offsite laboratory.Spikes and blanks,equal in
number to 10 percent of the samples that are chemically analyzed,will be processed with the
samples.
3.3.6 Employee Health and Safety
Programs currently in place for monitoring of exposures to employees will remain in effect
throughout the time period during which tailings cell reclamation,Mill decommissioning and
clean up of windblown contamination are conducted.This will include personal monitoring
(film badges/TLD's)and the ongoing bioassay program.Access control will be maintained at
the Restricted Area boundary to ensure employees and equipment are released from the site in
accordance with the current License conditions.In general,no changes to the existing programs
are expected and reclamation activities are not expected to increase exposure potential beyond
the current levels.
WMRCPLNIATA2Rev4_0 November2009
Page A-18
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
3.3.7 Environment Monitoring
Existing environmental monitoring programs will continue during the time period in which
reclamation and decommissioning is conducted.This includes monitoring of surface and
groundwater,airborne particulates,radon,soils and vegetation,according to the existing License
conditions.In general,no changes to the existing programs are expected and reclamation
activities are not expected to increase exposure potential beyond the current levels.
3.3.8 Quality Assurance
At least SIX (6)months pnor to beginning of decommission activities,a detailed Quality
Assurance Plan will be submitted for Executive Secretary approval.The Plan will be in
accordance with NRC Regulatory Guide 4.15,Quality Assurance for Radiological Monitoring
Programs (Inception Through Normal Operations to License Termination)Effluent Streams and
the Environment,July 2007,Revision 2.In general,the Plan will detail Denison's organizational
structure and responsibilities,qualifications ofpersonnel,operating procedures and instructions,
record keeping and document control,and quality control in the sampling procedure and outside
laboratory.The Plan will adopt the existing quality assurance/quality control procedures utilized
in compliance with the existing License.
WMRCPLNIATA2Rev4_0 November 2009
--~-------------------._-._-,.""..............."....,....,,:',,••\,,,,
"....'.............-------------------------.............
",,,,
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f
SCANNING PATH
FIGURE A-3.3-1
TYPICAL SCANNING PATH
SCOPING SURVEY
10 METERS
~--------IOfvfETERS----------1
LOCATION OF SYSTEMATIC SOIL SAMPLING
FIGURE A-3.3-2
STANDARD SAMPLING PATTERN FOR
SYSTEMATIC SURVEY OF SOIL
Page A-21
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
4.0 PLACEMENT METHODS
4.1 Scrap and Debris
The scrap and debris will have a maximum dimension of 20 feet and a maximum volume of 30
cubic feet.Scrap exceeding these limits will be reduced to within the acceptable limits by
breaking,cutting or other approved methods.Empty drums,tanks or other objects having a
hollow volume greater than five cubic feet will be reduced in volume by at least 70 percent.If
volume reduction is not feasible,openings will be made in the object to allow soils,tailings
and/or other approved materials to enter the object at the time of covering on the tailings cells.
The scrap,after having been reduced in dimension and volume,if required,will be placed on the
tailings cells as directed by the QC officer.
Any scrap placed will be spread across the top ofthe tailings cells to avoid nesting and to reduce
the volume ofvoids present in the disposed mass.Stockpiled soils,contaminated soils,tailings
and/or other approved materials will be placed over and into the scrap in sufficient amount to fill
the voids between the large pieces and the volume within the hollow pieces to form a coherent
mass.It is recognized that some voids will remain because of the scrap volume reduction
specified,and because of practical limitations of these procedures.Reasonable effort will be
made to fill the voids.The approval of the Site Manager or a designated representative will be
required for the use of materials other than stockpiled soils,contaminated soils or tailings for the
purpose of filling voids.
WMRCPLNIATA2Rev4_0 November 2009
Page A-22
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
4.2 Contaminated Soils and Raffinate Crystals
The various materials will not be concentrated in thick deposits on top ofthe tailings,but will be
spread over the working surface as much as possible to provide relatively unifonn settlement and
consolidation characteristics ofthe cleanup materials.
4.3 Compaction Requirements
The scrap,contaminated soils and other materials for the first lift will be placed over the existing
tailings surface to a depth ofup to four feet thick in a bridging lift to allow access for placing and
compacting equipment.The first lift will be compacted by the tracking of heavy equipment,
such as a Caterpillar D6 Dozer (or equivalent),at least four times prior to the placement of a
subsequent lift.Subsequent layers will not exceed two feet and will be compacted to the same
requirements.
During construction,the compaction requirements for the crystals will be reevaluated based on
field conditions and modified by the Site Manager or a designated representative,with the
agreement ofthe Executive Secretary.
The contaminated soils and other cleanup materials after the bridging lift will be compacted to at
least 80 percent ofstandard Proctor maximum density (ASTM D-698).
WMRCPLNIATA2Rev4_0 November 2009
Page A-23
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
5.0 RECLAMATION CAP -CELLS 1,2,3 AND 4A
5.1 Eatih Cover
A multi-layered earthen cover will be placed over tailings Cells 2,3 and 4A and a portion of Cell
1 used for disposal of contaminated materials (the Ce11l Tailings Area).The general grading
plan is shown on Drawing A-5.1-1.Reclamation cover cross-sections are shown on Drawings
A-5.1-2 and A-5.1-3.
5.2 Materials
5.2.1 Physical Properties
The physical properties ofmaterials for use as cover soils will meet the following:
Random Fill (Platform Fill and Frost Barrier)
These materials will be mixtures of clayey sands and silts with random amounts of gravel and
rock size material.In the initial bridging lift of the platform fill,rock sizes of up to 2/3 of the
thickness of the lift will be allowed.On all other random fill lifts,rock sizes will be limited to
2/3 of the lift thickness,with at least 30 percent of the material finer than 40 sieve.For that
portion passing the No.40 sieve,these soils will classify as CL,SC,MC or SM materials under
the Unified Soil Classification System.Oversized material will be controlled through selective
excavation at the stockpiles and through the utilization of a grader,bulldozer or backhoe to cull
oversize from the fill.
WMRCPLN\ATA2Rev4_0 November2009
Page A-24
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Clay Layer Materials
Clays will have at least 40 percent passing the No.200 sieve.The minimum liquid limit ofthese
soils will be 25 and the plasticity index will be 15 or greater.These soils will classify as CL,SC
or CH materials under the Unified Soil Classification System.
WMRCPLNIATA2Rev4_0 November 2009
RIPRAP
FROST BARRIER FILL (2 FT.THICK)
B COMPACTED CLAY (1 FT.THICK)B'PLATFORM FILL ABOVE TAILINGS (MINIMUM 3 FT.THICK)
APPROXIMATE TAILINGS SURFACE5640 5640
~DETAIL 2-.J
(J)
~5620 5 56201
f-Ww 5600 5600LL
z 5580 55800APPROXIMATEf-~5560 BOTTOM OF CELL 5560
-.Jw
5540 5540
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00000000000000000000N..-<0 IX)0 N ..-<0 IX)0 N ..-<0 IX)0 N ..-<0 IX)
N N N N N "'"'"'"'"'
SECTION B-B'
5560
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z 5580o
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1 5
DETAIL 2
RIPRAP
FROST BARRIER FILL (2 FT.THICK)
COMPACTED CLAY (1 FT.THICK)
PLATFORM FILL ABOVE TAILINGS (MINIMUM 3 FT.THICK)
APPROXIMATE TAILINGS SURFACE
~APPROXIMATE
BOTTOM OF CELL
TOP OF BERM
REMOVED
C'
5640
DETAIL 2
~~5L1 5620
5600
5580
5560
5540 ---7----,-------,--------,-------,--------:----,-------,--------,-------,--------:----,-------,--------,-------,--------:----,-------,--------,-------,-------c 5540
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FIGURE A-5.1-2
RECLAMATION COVER
AND CROSS SECTIONS
County:San Juan tate:Utah
REV.
No.DATE BY REVISIONS
&11/111/88 RAH Delete clay layer from exterior side slopes,
change layer names,&change title block
11 7/11/0.dm'Add section D-O'
SECTION D-D'
RIPRAP
D FROST BARRIER FILL (2 FT.THICK)
D'COMPACTED CLAY (1 FT.THICK)
5640
PLATFORM FILL ABOVE TAILINGS (MINIMUM 3 FT.THICK)
APPROXIMATE TAILINGS SURFACE 5640
~-.J
(J)
~5620 5620
t;Jw 5600 5600 VERTICAL SCALELL
~I
z 5580 5580 40 a 40 80 FEET0
~5560 5560wAPPROXIMATE-.J HORIZONTAL SCALEwBOTTOMOFCELL
5540 5540 ~I I
200 a 200 400 FEET
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0N..-<0 IX)0 N ..-<0 IX)0 N ..-<0 IX)0 N ..-<0 IX)IX)
N N N N N "'"'"'"'"'"'
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RIPRAP,d50 =8"
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Denison Mines (USA)Corp.OENISONI)44
MINES
CELL OUTSLOPE
Drafted By,RAHA.KuhnDesign:
San Juan tate:Utah
WHITE MESA MILL
FIGURE A-5.1-4
ROCK APRON
AT BASE OF TOE OF CELL OUTSLOPES
4/2/99
Project:
County:
Date:
L ..-.----7.0'----
uuQ)a;u
Page A-29
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
5.2.2 Borrow Sources
The sources for soils for the cover materials are as follows:
1.Random Fill (Platform and Frost Bani.er)-stockpiles from prevIOUS cell
construction activities currently located to the east and west of the tailing
facilities.
2.Clay -will be from suitable materials stockpiled on site during cell construction
or will be imported from bOlTOW areas located in Section 16,T38S,R22E,SLM.
3.Rock Armor -will be produced through screening of alluvial gravels located in
deposits 1 mile north ofBlanding,Utah;7 miles north ofthe Mill site.
5.3 Cover Construction
5.3.1 General
Placement of cover materials will be based on a schedule determined by analysis of settlement
data,piezometer data and equipment mobility considerations.Settlement plates and piezometers
will be installed and monitored in accordance with Section 5.4 ofthese Plans and Specifications.
WMRCPLN\ATA2Rev4_0November2009
Page A-30
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
5.3.2 Placement and Compaction
5.3.2.1 Methods
PlatfOllli Fill
An initial lift of 3 to 4 feet ofrandom fill will be placed over the tailings surface to form a stable
working platform for subsequent controlled fill placement.This initial lift will be placed by
pushing random fill material or contaminated materials across the tailings in increments,slowly
enough thatJhe underlying tailings are displaced as little as possible.Compaction of the initial
lift will be limited to what the weight of the placement equipment provides.The maximum rock
size,as far as practicable,in the initial lift is 2/3 of the lift thickness.Placement of fill will be
monitored by a qualified individual with the authority to stop work and reject material being
placed.The top surface (top 1.0 feet)of the platform fill will be compacted to 90%maximum
dry density per ASTM D 698.
Frost Barrier Fill
Frost barrier fill will be placed above the clay cover in 12-inch lifts,with particle size limited to
2/3 of the lift thickness.Frost barrier material will come from the excavation of random fill
stockpiles,If oversized material is observed during the excavation of fill material it will be
removed as far as practicable before it is placed in the fill.
In all layers ofthe cover the distribution and gradation ofthe materials throughout each fill layer
will be such that the fill will,as far as practicable,be free of lenses,pockets,streaks or layers of
material differing substantially in texture,gradation or moisture content from the surrounding
material.Nesting of oversized material will be controlled through selective excavation of
stockpiled material,observation of placement by a qualified individual with authority to stop
work and reject material being placed and by culling oversized material from the fill utilizing a
grader.Successive loads ofmaterial will be placed on the fill so as to produce the best practical
distribution ofmaterial.
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If the compacted surface of any layer of fill is too dry or smooth to bond properly with the layer
ofmaterial to be placed thereon,it will be moistened and/or reworked with a harrow,scarifier,or
other suitable equipment to a sufficient depth to provide relatively uniform moisture content and
a satisfactory bonding surface before the next succeeding layer of earthfill is placed.If the
compacted surface of any layer of earthfill in-place is too wet,due to precipitation,for proper
compaction of the earthfill material to be placed thereon,it will be reworked with harrow,
scarifier or other suitable equipment to reduce the moisture content to the required level shown
in Table 5.3.2.1-1.It will then be recompacted to the earthfill requirements.
No material will be placed when either the materials,or the underlying material,is frozen or
when ambient temperatures do not permit the placement or compaction of the materials to the
specified density,without developing frost lenses in the fill.
5.3.2.2 Moisture and Density Control
As far as practicable,the materials will be brought to the proper moisture content before
placement on tailings,or moisture will be added to the material by sprinkling on the earthfill.
Each layer of the fill will be conditioned so that the moisture content is uniform throughout the
layer prior to and during compaction.The moisture content of the compacted fill will be within
the limits ofstandard optimum moisture content as shown in Table 5.3.2.1-1.Material that is too
dry or too wet to permit bonding of layers during compaction will be rejected and will be
reworked until the moisture content is within the specified limits.Reworking may include
removal,re-harrowing,reconditioning,rerolling,or combinations ofthese procedures.
Density control of compacted soil will be such that the compacted material represented by
samples having a dry density less than the values shown in Table 5.3.2.1-1 will be rejected.
Such rejected material will be reworked as necessary and rerolled until a dry density equal to or
greater than the percent ofits standard Proctor maximum density shown in Table 5.3.2.1-1.
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To determine that the moisture content and dry density requirements of the compacted fill are
being met,field and laboratory tests will be made at specified intervals taken from the compacted
fills as specified in Section 7.4,"Frequency ofQuality Control Tests."
5.4 Monitoring Cover Settlement
5.4.1 Temporary Settlement Plates
5.4.1.1 General
Temporary settlement plates will be installed in the tailings Cells.At the time of cell closure,a
monitoring program will be proposed to the Executive Secretary.Data collected will be
analyzed and the reclamation techniques and schedule adjusted accordingly.
5.4.1.2 Installation
At the time ofcell closure or during the placement of interim cover temporary settlement plates
will be installed.These temporary settlement plates will consist of a corrosion resistant steel
plate 1/4 inch thick and two foot square to which a one inch diameter corrosion resistant monitor
pipe has been welded.The one inch monitor pipe will be surrounded by a three inch diameter
guard pipe which will not be attached to the base plate.
The installation will consist ofleveling an area on the existing surface ofthe tailings,and placing
the base plate directly on the tailings.A minimum three feet ofinitial soil or tailings cover will
be placed on the base plate for a minimum radial distance of five feet from the pipe.
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5.4.1.3 Monitoring Settlement Plates
Monitoring of settlement plates will be in accordance with the program submitted to and
approved by the DRC.Settlement observations will be made in accordance with Quality Control
Procedure QC-16-WM,"Monitoring ofTemporary Settlement Plates."
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TABLE A-5.3.2.1-1
Placement and Compaction Criteria
Reclamation Cover Materials
Cover Layer
Platform Fill
Clay Layer
Frost Barrier
Riprap
Maximum
Lift Thickness
3 Feet Bridging Lift*
1 Foot
1 Foot
2 Feet
Per Cent
Compaction
80
90
95
95
Allowable Placement
Moisture Content
from Optimum
Moisture Content
±2
oto +3
±2
Top ofTails 6 Inches
Slope 8 Inches
Note:
*Compaction ofthe bridging lift is dependent on stability offill and equipment used
Percent Compaction is based on standard Proctor dly density (ASTM D-698).
Optimum moisture content ofa soil will be determined by ASTM D-2216 or D-4643 methods.
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6.0 ROCK PROTECTION
6.1 General
The side slopes ofthe reclaimed cover will be protected by rock surfacing.Drawings 5.1-1,5.1-
2,and 5.1-3 show the location of rock protection with the size,thickness and gradation
requirements for the various side slopes.
A riprap layer was designed for erosion protection ofthe tailings soil cover.According to NRC
guidance,the design must be adequate to protect the soil/tailings against exposure and erosion
for 200 to 1,000 years (NRC,1990).CUlTently,there is no standard industry practice for
stabilizing tailings for 1,000 years.However,by treating the embankment slopes as wide
channels,the hydraulic design principles and practices associated with channel design were used
to design stable slopes that will not erode.Thus,a conservative design based on NRC guidelines
was developed.Engineering details and calculations are summarized in the Tailings Cover
Design report (Appendix D).
Riprap cover specifications for the top and side slopes were determined separately as the side
slopes are much steeper than the slope of the top of the cover.The size and thickness of the
riprap on the top ofthe cover was calculated using the Safety Factor Method (NUREG/CR-4651,
1987),while the Stephenson Method (NUREG/CR-4651,1987)was used for the side slopes.
These methodologies were chosen based on NRC recommendations (1990).
By the Safety Factor Method,riprap dimensions for the top slope were calculated in order to
achieve a slope "safety factor"of 1.1.For the top ofthe soil cover,with a slope of0.2 percent,
the Safety Factor Method indicated a median diameter (Dso)riprap of 0.28 inches is required to
stabilize the top slope.However,this dimension must be modified based on the long-term
durability of the specific rock type to be used in construction.The suitability ofrock to be used
as a protective cover has been assessed by laboratory tests to determine the physical
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characteristics ofthe rocks.The gravels sourced from pits located north ofBlanding require an
oversizing factor of 9.35%.Therefore,riprap created from this source should have a D50 size of
at least 0.306 inches and should have an overall layer thickness ofat least three inches on the top
of the cover.From a practical construction standpoint the minimum rock layer thickness may be
up to six (6)inches.
Riprap dimensions for the side slopes were calculated using Stephenson Method equations.The
side slopes ofthe cover are designed at 5H:1V.At this slope,Stephenson's Method indicated the
unmodified riprap D50 of 3.24 inches is required.Again assuming that the gravel from north of
Blanding will be used,the modified D50 size of the riprap should be at least 3.54 inches with an
overall layer thickness ofat least 8 inches.
6.2 Materials
Materials utilized for riprap applications will meet the following specifications:
Location
Top Surface
Slope Surface
Toe Apron
D50 Size
0.3"
3.5"
6.4"
DlOo Size
0.6"
7"
12"
Layer Thickness
6"
8"
24"
Riprap will be supplied to the project from gravel sources located north of the project site.
Riprap will be a screened product.
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Riprap quality will be evaluated by methods presented in NUREG/l623 Design of Erosion
Protection for Long-Tenn Stabilization Size adjustment will be made in the riprap for materials
not meeting the quality criteria.
6.3 Placement
Riprap material will be hauled to the reclaimed surfaces and placed on the surfaces using belly
dump highway trucks and road graders.Riprap will be dumped by bucks in windrows and the
grader will spread the riprap in a manner to minimize segregation of the material.Depth of
placement will be controlled through the establishment of grade stakes placed on a 200 x 200
foot grid on the top of the cells and by a 100 x 100 foot grid on the cell slopes.Physical checks
of riprap depth will be accomplished through the use of hand dug test pits at the center of each
grid in addition to monitoring the depth indicated on the grade stakes.Placement of the riprap
will avoid accumulation of riprap sizes less than the minimum Dso size and nesting of the larger
sized rock.The riprap layer will be compacted by at least two passes by a D-7 Dozer (or
equivalent)in order to key the rock for stability.
7.0 QUALITY CONTROL/QUALITY ASSURANCE
7.1 Quality Plan
A Quality Plan has been developed for construction activities at the Mill.The Quality Plan
includes the following:
1.QCIQA Definitions,Methodology and Activities.
2.Organizational Structure.
3.Surveys,Inspections,Sampling and Testing.
4.Changes and Corrective Actions.
5.Documentation Requirements.
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6.Quality Control Procedures.
7.2 Implementation
The Quality Plan will be implemented upon initiation ofreclamation work.
7.3 Quality Control Procedures
Quality control procedures have been developed for reclamation and are presented in Attachment
B of this Reclamation Plan.Procedures will be used for all testing,sampling and inspection
functions.
7.4 Frequency ofQuality Control Tests
The frequency ofthe quality control tests for earthwork will be as follows:
1.The frequency of the field density and moisture tests will be not less than one test per
1,000 cubic yards (CY)ofcompacted contaminated material placed and one test per 500
CY of compacted random fill,radon barrier or frost barrier.A minimum oftwo tests will
be taken for each day that an applicable amount of fill is placed in excess of 150 CY.A
minimum of one test per lift and at least one test for every full shift of compaction
operations will be taken.
Field density/moisture tests will be performed utilizing a nuclear density gauge (ASTM
D-2922 density and ASTM D-3017 moisture content).Correlation tests will be
performed at a rate of one for every five nuclear gauge tests for compacted contaminated
materials (one_
per 2,500 CY placed)and one for every ten nuclear gauge tests for other compacted
materials (one per 5,000 CY ofmaterial placed).Correlation tests will be sand cone tests
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(ASTM D-1556)for density determination and oven drying method (ASTM D-22l6)for
moisture determination.
2.Gradation and classification testing will be performed at a minimum of one test per 2,000
CY of upper platform fill and frost barrier placed.A minimum of one test will be
performed for each 1,000 CY of radon barrier material placed.For all materials other
than random fill and contaminated materials,at least one gradation test will be run for
each day ofsignificant material placement (in excess of 150 CY).
Atterberg limits will be determined on materials being placed as radon barrier.Radon barrier
material will be tested at a rate ofat least once each day of significant material placement
(in excess of 150 CY).Samples should be randomly selected.
4.Prior to the stmi of field compaction operations,appropriate laboratory compaction
curves will be obtained for the range ofmaterials to be placed.During construction,one
point Proctor tests will be performed at a frequency of one test per every five field
density tests (one test per 2,500 CY placed).Laboratory compaction curves (based on
complete Proctor tests)will be obtained at a frequency of approximately one for every 10
to 15 field density tests (one lab Proctor test per 5,000 CY to 7,500 CY placed),
depending on the variability ofmaterials being placed.
5.For riprap materials,each load ofmaterial will be visually checked against standard piles
for gradation prior to transport to the tailings piles.
Prior to delivery ofany riprap materials to the site rock durability tests will be performed
for each gradation to be used.Test series for riprap durability will include specific
gravity,absorption,sodium soundness and LA abrasion.During construction additional
test series _and gradations will be performed for each type ofriprap when approximately
one-third (1/3)and two-thirds (2/3)of the total volume of each type have been produced
or delivered.For any type of riprap where the volume is greater than 30,000 CY,a test
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series and gradations will be performed for each additional 10,000 CY ofriprap produced
or delivered.
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WMRCPLN\ATTB.RPT\November 2009
ATTACHMENT B
QUALITY PLAN
FOR
CONSTRUCTION ACTIVITIES
WHITE MESA PROJECT
BLANDING,UTAH
PREPARED BY
DENISON MINES (USA)CORP.
1050 17th STREET,SUITE 950
DENVER,COLORADO 80265
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TABLE OF CONTENTS
Page No.
1.0 GENERAL B-1
1.1 SCOPE OF QUALITY PLAN B-l
1.2 QUALITY PLAN OBJECTIVES B-l
1.3 DEFINITIONS B-2
1.4 QUALITY CONTROL/QUALITY ASSURANCE B-3
1.4.1 Methodology B-3
1.4.1.1 Flow ofActivities B-3
1.4.1.2 Compliance Reports B-3
1.4.2 Quality Control B-4
1.4.2.1 General B-4
1.4.2.2 Quality Control Activities B-4
1.4.3 Quality Assurance B-4
1.4.3.1 General B-4
1.4.3.2 Quality Assurance Activities B-5
1.4.3.2.1
1.4.3.2.2
Pre-qualification of QC Technicians B-5
Verification of Effectiveness ofQC Program B-5
1.4.4 Documentation B-6
1.5 MONITORING B-6
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TABLE OF CONTENTS (continued)
Page No.
2.0 ORGANIZATIONAL STRUCTURE B-6
2.1 SCOPE B-6
2.2 ORGANIZATION B-7
2.3 DUTIES AND QUALIFICATIONS OF PERSONNEL B-7
2.3.1 Personnel Designations B-7
2.3.2 Site Manager B-7
2.3.2.1 Duties,Responsibilities and Authority B-7
2.3.3 Designated Representative for Site Manager..B-8
2.3.4 Quality Control Officer ("QCO")B-8
2.3.4.1 Duties,Responsibilities and Authority B-8
2.3.5 Designated Representative for QCO B-9
2.3.6 QualityAssurance Officer ("QAO")B-l0
2.3.6.1 Duties B-10
2.3.7 Designated Representative ofthe Quality Assurance Officer.B-1 0
2.3.8 DRC Project Manager B-11
2.3.9 Quality Control Technicians ("QCT")B-1l
2.3.9.1 Duties B-11
2.3.9.2 Qualifications B-11
2.4 PROGRAM FOR INFORMATION FLOW B-12
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TABLE OF CONTENTS (continued)
Page No.
2.4.1 Review ofDocuments B-12
2.4.2 Infonnation Flow B-12
2.4.2.1 Internal Infonnation Flow B-12
2.4.2.2 Infonnation Flow to DRC B-13
3.0 SURVEYS,INSPECTIONS,SAMPLING AND TESTING B-13
3.1 SCOPE B-13
3.2 QUALITY CONTROL PROCEDURES B-16
3.3 FREQUENCY AND TyPE B-16
4.0 CHANGES AND CORRECTIVE ACTIONS B-16
4.1 SCOPE B-16
4.2 AUTHORITY OF PERSONNEL B-17
4.3 METHODOLOGy B-17
4.3.1 Field and Design Changes B-17
4.3.2 Conoective Actions B-17
5.0 DOCUMENTATION B-18
5.1 SCOPE B-18
5.2 PERSONNEL B-18
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TABLE OF CONTENTS (continued)
Page No.
5.2.1 Document Control Officer ("DCO")B-18
5.2.1.1 Duties B-18
5.3 FORMS B-19
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1.0 GENERAL
1.1 SCOPE OF QUALITY PLAN
The following Quality Plan for Construction Activities ("Quality Plan")describes how the
Construction Quality Control/Quality Assurance ("QC/QA")activities are implemented.
This Quality Plan includes the following:
(1)Organizational Structure;
(2)Surveys,Inspections,Sampling and Testing;
(3)Changes and Corrective Actions;and
(4)Documentation Requirements.
1.2 QUALITY PLAN OBJECTIVES
The objectives of the Quality Plan are as follows:
(l)Quality Control:To verify that the construction is in accordance with the Plans
and Specifications.
(2)Quality Assurance:To provide cross-checks and auditing functions on Quality
Control.
(3)Monitoring:To provide the required infOlmation and data to evaluate the effects
of Construction Activities.
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1.3 DEFINITIONS
Compliance Report:A report prepared by the QC Officer ("QCO")upon completion of a
Construction Segment.A Compliance Report requires the approval of the Site Manager.Any
subsequent Constmction Segment that is dependent upon successful completion of a specific
Construction Segment cannot be initiated until a Compliance Report is prepared and approved for
the previous dependent Construction Segment.Compliance Reports are to be completed on Form
No.F-23,which is attached in Section 5.
Construction Task:A basic construction feature of a Construction Project involving a specific
Construction Activity.
Construction Project:The total authorized/approved Project that requires several Construction
Segments to complete.
Design Change:Changes made in a Construction Project that alters or changes the intent of the
Plans and Specifications.Design changes require approval of the Design Engineer and the Site
Manager or a designated representative.Design Changes are to be reported on Form No.F-26,
which is attached in Section 5.
Field Change:Changes made during construction to fit field conditions that do not alter the intent of
the Plans and Specifications.Field Changes require approval of the Site Manager or a designated
representative.Field Changes are to be reported on Form No.F-25,which is attached in Section 5.
Final Construction Report:A report prepared by the Site Manager or a designated representative
upon completion of a Construction Project.This report will be submitted to the DRC with 180
calendar days after apparent completion orconstruction for Executive Secretary review and approval.
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Final Construction RepOli:A report prepared by the Site Manager or a designated representative
upon completion of a Construction Project.This report will be submitted to the DRC.
1.4 QUALITY CONTROL/QUALITY ASSURANCE
1.4.1 Methodology
1.4.1.1 Flow ofActivities
Figure B-1 shows the general relationships of Quality Control and Quality Assurance activities in
the performance of the Construction Activities for a given work area.The Quality Control
Activities implemented with standardized QC procedures,provide the necessary tests and
observations for the construction,sampling and monitoring process.Quality Assurance audits
and reviews will provide oversight ofthe QC Activities.
1.4.1.2 Compliance Reports
For each project,the Quality Plan requires a Compliance Report at the successful completion ofa
Construction Segment.The Construction Tasks making up a Construction Segment will be
determined to be in compliance with the Plans and Specifications by the QCO.A Compliance
Repoli will then be prepared by the QCO with a copy to the DRC Project Manager,and
submitted to the Site Manager for approval,before the next dependent phase ofconstruction can
begin.The Site Manager will review Quality Control data,Quality Assurance documentation,
and review any observations before approving the Compliance Report.
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After the Construction Project has been completed,a Final Construction Report will be prepared
by the Site Manager or a designated representative for submittal to the DRC.
1.4.2 Quality Control
1.4.2.1 General
Quality Control ("QC")will be conducted by the QCO or a designated representative,
hereinafter referred to as the QCO.The QCO will implement the QC Program.
1.4.2.2 Quality Control Activities
Quality Control requirements for a Construction Project are presented in the Specifications.
The Quality Control Activities will be implemented with standardized Quality Control
Procedures.The Quality Control Procedures include field sampling,testing,observations and
monitoring procedures,and laboratory testing procedures.The Quality Control Procedures are
listed and are included in Pmi VI.
1.4.3 Quality Assurance
1.4.3.1 General
Quality Assurance ("QA")will be conducted by the QAO or a designated representative.The
QAO will implement the QA Program.
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1.4.3.2 Quality Assurance Activities
The QA functions will be implemented by the QAO by perfOlming the following activities.
1.4.3.2.1 Pre-qualification ofQC Technicians
Each QC Technician ("QCT")will be pre-qualified by a QAO,who is a knowledgeable specialist
in the area of qualification.The QAO will detelmine the areas of expertise of the respective
technician and maintain a QA file on the technician.Areas of competency will be identified and
training needs noted for the respective technician.
1.4.3.2.2 Verification ofEffectiveness ofQC Program
The effectiveness of the QC Program will be verified by the QAO by performing the following
audits:
(1)Test and Sampling Procedures.Test procedures will be audited on a quarterly basis by
appropriate specialists.This will entail direct observation of test methods and sampling,
and performing random duplicate tests.
(2)Equipment.Equipment will be inspected and checked regularly.Calibration
certificates will be verified and maintained in the files.
(3)Calculations and Documentation.Calculations from tests and monitoring will be spot
checked randomly from the files.Documentation will be checked for accuracy and
completeness.
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1.4.4 Documentation
Each QA activity and audit will be documented in writing.Audit reports will be prepared by the
QAO and submitted to the Site Manager.These will be kept in the White Mesa project files,
and made available for review by the DRC Project Manager.
1.5 MONITORING
Monitoring functions fall under the responsibilities of the QCO.Scheduled monitoring and
observations shall be made at the intervals required in the Plans and Specifications by Quality
Control Technicians ("QCTs")under the direction of the QCO.Monitoring records will be
reviewed by the QCO and will be available for review by the DRC.The QAO will audit
monitoring records on an unscheduled basis.Monitoring records originals will be maintained in
the White Mesa Project Files.
2.0 ORGANIZATIONAL STRUCTURE
2.1 SCOPE
The following items are covered in this section:
(1)A description ofthe Quality Control Organization.
(2)The classification,qualifications,duties,responsibilities and authority ofpersonnel.
(3)The individual who will be responsible for overall management at the site for Quality
Control.
(4)The specific authority and responsibility of all other personnel regarding the Quality Plan.
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(5)A program for information flow among workers,construction management and inspectors
about various QC/QA,and health and safety requirements.
2.2 ORGANIZATION
The organization for implementation of the Quality Plan includes the Site Manager,the QCO,
and the QAO.
2.3 DUTIES AND QUALIFICATIONS OF PERSONNEL
2.3.1 Personnel Designations
The Site Manager or a designated representative will be referred to as the "Site Manager."
The Quality Control Officer or a designated representative will be referred to as the QC Officer
("QCO")."
The Quality Assurance Officer or a designated representative will be referred to as the QA
Officer ("QAO")."
2.3.2 Site Manager
2.3.2.1 Duties,Responsibilities and AuthOlity
The Site Manager will oversee the Construction Project and will be responsible for the conduct,
direction and supervision ofthe Work.As shown on the organizational chart,the Site Manager
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will have ultimate responsibility for all construction and QCIQA Activities.The Site Manager
will appoint all personnel,and interact as required with the QAO,the QCO and the DRC Project
Manager.
2.3.3 Designated Representative for Site Manager
In the absence ofthe Site Manager,a designated representative will assume the duties of the Site
Manager.
2.3.4 Quality Control Officer ("QCO")
2.3.4.1 Duties,Responsibilities and Authority
The QCO will be responsible for overall implementation and management of the Quality Control
Program for the Construction Project.The QCO will supervise Field and Laboratory Quality
Control Technicians,and will coordinate with the Document Control Manager,the Office Staff
and the Health and Safety Officer.The QCO will have specific authority and responsibility with
regard to all other personnel for the Quality Plan.The QCO will have the authority to reject
work or material,to require removal or placement,to specifY and require appropriate corrective
actions if it is detelmined that the Quality Control/Quality Assurance,personnel,instructions,
controls,tests,records are not confOlming to the Plans and Specifications.The signature ofthe
QCO is required on all Compliance RepOlis ("CR's")required in the Specifications.
The QCO will be familiar with the existing White Mesa Facilities,and QCIQA methodology.
Responsibilities ofthe QCO will include the following:
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(I)Provide overall surveillance ofQuality Control requirements.
(2)Be familiar with all documents,requirements,equipment and procedures relating to
project construction.
(3)Provide and document Quality Control Technician ("QCT")training.
(4)Evaluate and approve all reports.
(5)Assure schedules are met and adequately documented.
(6)Schedule data reduction activities.
(7)Arrange consultation with additional staff,the QAO,Site Manager,and/or DRC Project
Manager to help find solutions to unsolved problems.
(8)IdentifY invalid,unacceptable,or unusable data.
(9)Take corrective action if Quality Control procedures indicate the construction is not
meeting the requirements ofthe Specifications.
(l0)Assure all documentation is complete,accurate,and up to date.
(11)Interact and cooperate with QA Technicians.
2.3.5 Designated Representative for QCO
In the absence of the QCO,a designated representative will assume the duties of the QCO.In
addition,the designated representative may be assigned some of the duties,responsibilities and
authority ofthe QCO.
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2.3.6 Quality Assurance Officer ("QAO")
2.3.6.1 Duties
The QAO,who may be an independent consultant,will implement the Quality Assurance
functions,which includes pre-qualification of QCTs,verification of test procedures and results
by spot retests,equipment checks,and review of calculations and documentation and
Compliance Reports (CR's).The QAO should be familiar with the construction process and be
qualified in construction testing.
Responsibilities ofthe QAO will include the following:
(1)Be familiar with all documents,requirements,equipment and procedures relating to
project construction.
(2)Certify that the QCO is qualified to conduct the various test and monitoring procedures
and observations,and document same.
(3)Through spot checks,retests,equipment checks and reView of calculations and
documentation verify test procedures,monitoring and observations are being performed
cOlTectlyand accurately in accordance with the Specifications.
(4)Consult with the QCO,and the Site Manager to help solve problems.
(5)Prepare QA reports for review by the Site Manager and DRC Project Manager.
2.3.7 Designated Representative ofthe Quality Assurance Officer
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In the absence of the Quality Assurance Officer ("QAO"),the designated representative of the
QAO will assume the duties of the QAO.In addition,certain specialists may be designated to
assume some ofthe duties ofthe QAO.
2.3.8 DRC Project Manager
The DRC Project Manager will represent the DRC's interests in the Construction Project.The
DRC Project Manager may choose to review selected procedures,personnel qualifications,
equipment,calculations,and documentation.
2.3.9 Quality Control Technicians ("QCT")
2.3.9.1 Duties
The Quality Control Technicians ("QCTs)for implementation of the Quality Plan will be
classified as follows:
(1)Construction Quality Control Technicians -Field.
(2)Construction Quality Control Technicians -Laboratory.
A QCT may be qualified for and perform the duties in more than one classification.
2.3.9.2 Qualifications
The QCO will supervIse (or may appoint a supervisor)for each classification to provide
scheduling,oversee equipment calibrations,enforce documentation requirements,and provide
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
for preliminary document review.The number of QCTs in each classification will depend on
the project needs as the work progresses.
The Construction QCTs will satisfactorily complete a training program and receive on-the-job
training as required under the direction ofthe QCO.
A procedure verification program will be implemented by the QAO for all Construction QCTs.
2.4 PROGRAM FOR INFORMATION FLOW
2.4.1 Review ofDocuments
The Plans and Specifications for the Construction Project describe the work to be performed,the
QCIQA,and the monitoring requirements.These documents will be reviewed and approved in
depth by licensee personnel,including the QCO and Site Manager.
2.4.2 Information Flow
2.4.2.1 Internal Information Flow
The Construction Superintendent gives instructions to the Construction Foremen,who supervise
the construction workers.The Construction Superintendent may directly supervise all or some
ofthe construction workers.
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
The QCO monitors the construction work and completes the forms and reports as given in the
Quality Control Procedures.The QCO ensures that all key personnel receive the required
information.
Section 4.0 below,"Changes and Corrective Actions,"outlines the procedure for implementing
changes and corrective actions.
2.4.2.2 Information Flow to DRC
All reports of sampling,tests,inspections and construction records will be maintained in the
White Mesa Project files.These documents will be available to the DRC Project Manager at all
times.The DRC Project Manager will have the right to inspect and reproduce any documents as
needed.
A list of the required repOlis is shown on Table B-1.These reports will be kept in the White
Mesa Project Files.
3.0 SURVEYS,INSPECTIONS,SAMPLING AND TESTING
3.1 SCOPE
The following items are covered in this Section:
(l)Methods and procedures for surveys,inspections,sampling and testing during various
construction tasks.
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
(2)The necessary qualifications ofindividuals performing surveys,inspections,sampling and
testing.
(3)The number and type ofsurveys,inspections and/or tests to be conducted.
WMRCPLN\ATTB.RPT\November 2009
REPORT TYPE
TABLE B-1
REQUIRED REPORTS
FREQUENCY ORIGINATOR APPROVAL
Construction Activities
Sampling,Field and
Laboratory Testing
*Compliance Report
*Final Construction Report
Daily during Construction
Report for each respective
test
Upon completion of
Construction Segment
After completion ofthe
Construction Project
QC Technician
QC Technician
QC Officer
QC Officer
Site Manager
QC Officer
QC Officer
Site Manager
Site Manager
*RepOlis to be submitted to the DRC
Page B-16
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
3.2 QUALITY CONTROL PROCEDURES
Quality Control Procedures will be written to meet the following objectives:
(1)To describe the equipment,calibration and methods/procedures to be followed III
performing surveys,sampling and testing.
(2)To describe the procedures to observe construction activities.
(3)To describe the procedures for monitoring.
All Quality Control Procedures for sampling,testing,and monitoring will be conducted by the
QCO and/or QCTs.The results will be reviewed and approved by the QCO before being
delivered to the Document Control Officer ("DCO")for reproduction,distribution,and filing.
All boundary surveys will be made and documented by a registered land surveyor.Construction
surveys will be made and documented by appropriately trained QCTs.
3.3 FREQUENCY AND TYPE
The number and type of survey,observations,inspections and/or tests are specified in the Plans
and Specifications.
4.0 CHANGES AND CORRECTIVE ACTIONS
4.1 SCOPE
The methodology for dealing with changes and corrective actions is detailed in this Section.
WMRCPLN\ATIB.RP1\November 2009
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
4.2 AUTHORITY OF PERSONNEL
The Site Manager and/or the QCO will have the authority to reject material or work,to require
removal or replacement,to specify and require appropriate actions if it is determined that the
Quality Control/Quality Assurance,personnel,instructions,controls,tests,records are not
conforming to the Plans and Specifications.
4.3 METHODOLOGY
4.3.1 Field and Design Changes
Changes in locations or alignments ofconstruction features that do not alter design concepts will
be approved by the Site Manager or a designated representative.These changes will require a
Field Change Order (Form F-25).
Changes in design concepts will be approved and documented by the Design Engineer,will be
approved by the Site Manager.These changes will require a Design Change Order (Form F-26).
All changes will be recorded in the Final Construction Report including "as-built"drawings for
the work.
4.3.2 Corrective Actions
The QCO will require corrective actions,if tests and observations indicate the work is not
conforming to the intent of the Plans and Specifications.Appropriate corrective actions will be
WMRCPLN\ATIB.RP1\November 2009
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
determined by reviewing pertinent Quality Control records.Contemplated corrective actions
will be brought to the attention ofthe Site Manager and the Construction Superintendent.
5.0 DOCUMENTATION
5.1 SCOPE
Documentation requirements will include the following:
(1)The identification of the person who has authority to provide for the submittal and/or
storage of all survey,test and inspection reports.
(2)Specification ofreporting requirements,forms,formats,and distribution ofreports.
(3)A description of record keeping to document construction methods and results,surveys,
sampling,testing and inspection of construction.Samples of forms and records will be
included.
(4)Documentation of corrective actions.
5.2 PERSONNEL
5.2.1 Document Control Officer ("DCO")
5.2.1.1 Duties
The Document Control Officer ("DCO")will be appointed by the Site Manager.
Responsibilities will include:
IVMRCPLN\ATIB.RP'I\November 2009
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
(1)Maintaining permanent files for the Construction Project.All tests,surveys,monitoring
and report originals will be maintained in the project files.
(2)Instituting and overseeing data reproduction and distribution.A distribution list will be
prepared for each project number and will be reviewed and approved by the QCO.
5.3 FORMS
All test results,sampling,surveys,and monitoring will be documented on the forms for those
particular procedures where applicable.Specific surveys require a notebook prepared for data
recording.Each Construction Field QCT will complete a Construction Activities report for each
day's work.Forms will be completed so that all important data are recorded.Data required on
all fonns and notebooks includes project number,date,technician's signature,and the signature
ofthe supervisor or a designee,who has reviewed and approved the work.The DCa will return
all incomplete fonTIs to the appropriate supervisor to be properly filled out.
Forms F-23,F-25,and F-26 follow.
WMRCPLN\ATIB.RPT\November2009
WMRCPLN\ATIB.RP1\Novemher 2009
INSERT FORM F-23
Page B-20
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
WMRCPLN\ATTB.RPT\November 2009
INSERT FORM F-25
Page B-21
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White Mesa Mill Reclamation Plan
WMRCPLN\ATIB,RP1\November 2009
INSERT FORM F-26
Page B-22
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Denison Mines (USA)Corp.
White Mesa Mill Reclamation Plan
Date _
QUALITY PLAN ~IO.OP-GEN-1-WM
PART V Page 18
Form No.F-23
COMPLIANCE REPORT
Project No._
Construction Segment ___
Drawing No._
Specification No.___
Description of Completed Construction Segment
By:QC Off1<:I"_
Approvals
Site Manager _
NRC Project Managlr __
QUALITY PLAN NO.QP-GEN-l-~~
PART V Page 19
Form No.FoOtS
FIELD CHANGE ORDER
Project No._
Drawing No._
Specification No.___
Design feature
Modifications
Reason
Date -------
Initiated by:_
Approved by:_
Site Manager
QUALITY PLAN NO.QP-GEN-l-WMPARTVPage20
Fonn No.F....26
DESIGN CHANGE ORDER
Project No._
Drawing No._
Specification No._
Design feature
Change in design
Reason
Date -------
Initiated by:_
Approvals:
Site Manager _
NRC Project Manager _
Design Engineer ~---------------------------
FIGURE B-1
TYPICAL FLOW CHART FOR CONSTRUCTION PROJECT
START END
CONSTRUCTION CONSTRUCTION
PROJECT PROJECT
I ICONSTRUCTIONPROGRESS
\
CONSTRUCTION CONSTRUCTION CONSTRUCTION CONSTRUCTION
TASKS TASKS TASKS TASKS
QC QC QC QC
OA QA I QA I QA I
CONSTRUCTION CONSTRUCTION CONSTRUCTION CONSTRUCTION
SEGMENT SEGMENT SEGMENT SEGMENT
I II III n
COMPLIANCE COMPLIANCE COMPLIANCE COMPLIANCE
REPORT REPORT REPORT REPORT
!
FINAL CONSTRUCTION
REPORT
OENISOJ)~~
MINES
Denison Minel (USA)Corp.
1050 17th Street,Suite 950
Denve"CO 80265
USA
Tel:[phone]
Fax:303 389...125
www.denisonmlnes.com
Revised Cost Estimates
for
Reclamation
of the
White Mesa Mill and Tailings
Management System
Blanding,Utah
October 2009
State of Utahlle.(2)Byproduct Material License #UT1900479
Denison Mines (USA)Corp.
www.denlsonmlnes.com
1050 17th Street,Suite 950
Denve"CO,USA 80285
Tel:[phone]
Fax:[phone]
Denison Minas (USA)Corp.
1050 17thStfllllt,Suite 950
Oem'or,CO 80255
USA
Tel:303 628·7798
Fall:303 369-4125
www.denfsonmlnlMl.com
October 5,2009
VIA E·MAIL AND OVERNIGHT DELIVERY
Mr.Dane L.Finerfrock
Executive Secretary
Utah Radiation Control Board
Department of Environmental Quality
168 North 1950 West
PO Box 144810
Salt Lake City,Utah 84114-4810
Re:Denison Mines (USA)Corp.
State of Utah 11 e.(2)Byproduct Material License It UT'1900479
Wtlite Mesa Mill,Blanding,Utah
License Condition Number 9.5 -Surety Update·REVISION
Dear Mr.Finerfrock:
Pursuant to License Condition No.9.5 of State of Utah 11 e.(2)Byproduct Material License #UT1900479,please
find enclosed a copy of additional revisions to the revised reclamation and decommissioning cost estimate in
support of the surety bond on the White Mesa Mill.The revision is in response to the August 17,2009,leiter
from Dave Rupp,requesting clarification and additional information on the February 2009 surety update.
Individual comments from Mr.Rupp are restated,in italics,below,followed by an explanation of the changes or
modifications made to the cost estimate.
A.,Costs for decommissioning,and removal ofqjl additional new tank facilities.DUSA's response to Item
1.a.ofour letter ofMay 21,2009 stated that,"Additional costs have been included in the Mill Decommissioning
section,"Misc.Tankage &Spare Parts Removal",of the estimate,to cover the demolition and disposal ofthe
newly constructed uranium and vanadium SXfeed tanks and the SXraffinate t"lnk.The total manpower and
equipment hours were increased by 50%to cover the additional work effort required."
Comment:After review ofthe July 27,2009 DUSA submittal,it appears the 50%adjustments were erroneously
omitted,and the submitted costs showed a decrease.
Letter to Dane Finerfrock
October 5,2009
Page 2
The adjustments have been made as originally stated.A revised copy of the "Mill Decommissioning"section is
attached.
B.Equipment maintenance costs for disposal ofCameco and Honeywell barrels.DUSA's July 27,2009
response to Item 1.d.stated that,"Under the Mill Decommission section,equipment maintenance costs have
been included for disposal ofthe Cameco and I-Ioneywell alternate feed barrels."
Comment:The requested costs for equipment maintenance was placed in the table for the Cameco and
I-/oneywefl Barrels,but was not added into the total for this item.Please revise the cost estimate accordingly.
The maintenance cost line item has been added to the total for the "Cameco and Honeywell Barrels".A revised
copy of the "Mill Decommissioning"section is attached.
C.Demobilization ofNRCL power equipment.DUSA's July 27,2009 response to Item 3.a.stated that,
"Adding an additional demobilization cost would result in doubling ofthe demobilization cost.All mobilization
and demobilization costs,including assembly and disassembly were included in the February 2009 estimate."
Comments:
1.In an email on this subject dated June 29,2009 from Dave Rupp ofDRC to Harold Roberts ofDUSA,
this request was clarified.Mr.Rupp stated that,
"You had a separate question,asking for clarification on item 38,in our May 21,2009 letter.This
question regards statements made on page 2 ofNCRL 's letter,in the paragraphs headed with "Freight
and Assembly Charges."In the paragraph above that one,titled "Mobilization,"NCRL distinctfy
separates mobilization and demobilization for service support.Then begins discussing,"The freight
and assembly charges listed on Attachment A are based upon al/machines shipped by true/<to the job
site."This seems like mobilization.That paragraph is followed by a paragraph on demobilization,as if
they were separate charges from those listed in Attachment A.
I realize they list in AttachmentA that they are the "To &From"costs.However,the verbiage above
makes it ambiguous.So,we are asking in our letter,paragraph 3a,to "Please add appropriate related
demobilization costs for the power equipment,and clarify this issue,ifnecessary,byproviding
supporting documentation from NCRL."
"The [last]sentence would have been betterstated by the phrase,"or clarify this issue ..."
2.Denison has not added more demobilization costs for the equipment over the original submittal,
therefore,as requested in our email above,we as/<that DUSA clarify this issue byproviding supporting
justification and documentation,from NCRL,that the 'Total Freight Charges To &From"costs shown
on the Attachment A spread sheet covers both mobilization and demobilization,and is complete and
adequate.
The attached e-mail from NCRL (Butler Machinery)clarifies DUSA's original estimate basis for the mobilization
and demobilization costs for the rental equipment.The original NCRL quote includes mobilization and
demobilization and therefore no additional demobilization cost has been added to the estimate.
Letter to Dane Finerfrock
October 5,2009
Page 3
D.Insurances.This indirect cost is a new item.Origina//y,the costs for standard contractor insurance
items appear to have been omitted from surety estimates.These insurances would be required by the
state for the contractor doing the work.
1.Equipment Insurance.On the June 25,2009 WRS rental rate quote sheet,item 7,it states that the
"Customer must supply insurance binder covering value ofequipment."It appears this equipment
vendor requested insurance,which has not provided,or
budgeted for.In the equipment information from NCRL,WRS,HE and Power Motive,we have not
identified that equipment insurance is provided.A value for this insurance is an average of O.5 to
1.5percent ofthe value ofthe equipment,and is known as a "contractor's equipment floater."
Contractors Equipment Floater has been added as an indirect cost at the rate of 1.0%of the replacement value
of all rental equipment.Equipment replacement values were based on advertised values for used equipment of
the make and model used in the estimate.The values are listed for each unit on the 'Equipment"section of the
estimate.
2.Employer's Liability.In the R.S.Means estimating guide referenced above,p.10-11,workers
compensation (already provided)is combined with employer's liability,an average cost for
excavation work is 10.46%ofthe total related labor cost;for wrecking work,an average cost is
36.28%ofthe related labor cost.
DUSA received worker compensation rate quotes from AIG Insurance for the work classifications of Excavation,
Code 6217,and Building Wrecking,Code 5213.See the attached e-mail confirmation.The highest rates
quoted were used to adjust the labor burden rates for the cost estimate.The breakdown for payroll taxes,
workers compensation and unemployment insurance are shown on the "Labor Costs"section of the estimate.
The revised rates were applied to all labor classifications.The payroll burden increased from 13.97%to
17.67%,excluding fringe benefits.Employer's liability coverage is included in the workers compensation rates.
3.General Liability.For general/iability ("aI/-risk type'!,an average cost is 0.25 to 0.62%oftl7e
contract.The cost of this insurance must be added to the estimate as an indirect cost.
General liability insurance has been added as an indirect cost,at the rate of 0.45%of the base contract value.
The revised reclamation estimate and surety amount is $'15,807,429,which is an increase from the current
approved surety amount of $15.017,128.The attached estimate represents a total revision to Attachment C of
Revision 3.0 to the approved July 2000 Reclamation Plan.
Letter to Dane Finerfrock
October 5,2009
Page 4
If you have any questions on the attached revised reclamation and decommissioning cost estimate please feel
free to contact me at [phone].
Yours very truly,
DENISON MINES (USA)CORP.~£i~
Steven D.Landau
Manager Environmental Affairs
Enclosures
cc:Ron F.Hochstein,wi attachment
Harold R.Roberts,wI attachment
Rich E.Bartlett,wI attachment
David Turk,wlo attachment
Cost Summary
WHITE MESA MILL RECLAMATION COST ESTIMATE
October 2009 Revision
Mill Decommissioning $2,089,903
Celli $1,752,344
Cell 2 $1,517,213
Cell 3 $1,913,345
Cell4A $1,431,106
Miscellaneous $2,663,800
Subtotal Direct Costs $11,367,712
Profit Allowance 10.00%$1,136,771
Contingency 15.00%$1,705,157
Licensing &Bonding 2.00%$227,354
UDEQ Contract Administration 4.00%$454,708
Contractors Equipment Floater $88,250
General liability Insurance 0.45%$51,155
Long Term Care Fund $776,322
Total Reclamation $15,807,429
Revised Bond Amount $15,807,429
10/5/2009 -2:17 PM •Copy of WMM Rec Plan Est Sept 2009 (2).xls
Denison Mhl€S (USA)Corp.
White Mesa Mill
Mill Decommissioning
MILL DECOMMISSIONING
Mill Building Demolition
MILL DECOMMISSIONING
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators hI's $18.94 720 $13,636
Mechanics hI's $16.09 640 $10,299
Laborers hI's $12.51 320 $4,002
Small Tools hI's $1.35 960 $1,296
Cat 769 Haul Truck hI's $93.45 640 $59.808
Truck Drivers hI's $16.67 640 $10,671
Cat 988 Loader hI's $133.06 160 $21.289---"--~._-Cat 365 Excavator hI's $128.54 160 $20.567
Cat 330 wI PC-400 metalShears hI's $172.17 160 $27,547
65 Ton Crane hI's $96.82 160 $15,492
30 Ton Crane ~._--$59.58 80 $4,767
Equipment Maintenance (Butler)hI's $18.58 1,360 $25,274
Concrete Removal sf $3.30 37,500 $123,750
Total Mill Building Demolition
Ore Feed Demolition
Resource Description Units Cost/Unit Task Units
$338,397
Task Cost
Equipment Operators hI's $18.94 48 $909
Mechanics hI's $16.09 64 $1,030
Laborers .br.L....$12.51 32 $400
Small Tools hI's $1.35 96 $130
Cat 769 Haul Truck hI's $93.45 64 $5,981
Truck Drivers hI's .-$1'6~67 64 $1,067
Cat 988 Loader hI's $133.06 16 $2,129
Cat 365 Excavator hI's $128.54 16 $2,057
Cat 330 wI PC-400 metalShears hI'S .,--.....$1'72.17 16 $2,755
30 Ton Crane hI'S $59.58 0 $0
Equipment Maintenance (Butler)hI'S $18.58 112 $2,081
Total Ore Feed Demolition
SX Building Demolition
Resource Description Units Cost/Unit Task Units
$18,538
Task Cost
Equipment Operators hI'S $18.94 240 $4,545
Mechanics hI'S $16.09 320 $5,149
Laborers hI'S $12.51 160 $2,001
Small Tools hI'S $1.35 480 $648
Cat 769 Haul Truck hI'S $93.45 320 $29,904
Truck Drivers hI'S $16.67 320 $5,336
Cat 988 Loader hI'S $133.06 80 $10,645
Cat 365 Excavator hI'S $128.54 80 $10.283
Cat 330 wI PC-400 metalShears hI'S $172.17 80 $13,774
65 Ton Crane hrs $96.82 0 $0
30 Ton Crane hI'S $59.58 0 $0
Equipment Maintenance (Butler)hrs $18.58 560 $10,407
Concrete Removal .2L $3.30 55,970 $184,701
Total SX Building Demolition
10/5/2009·2:12PM·CopyolWMM Rec Plan SstSept2009(2).xls
$277,393
DenisonMines(USA)Corp.
While Mesa Mill
MILL DECOMMISSIONING
CCD Circuit Removal
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators hrs $18.94 135 $2,557
Mechanics hrs $16.09 120 $1,931
Laborers hrs $12.51 60 $750
Small Tools -----_.hrs $1.35 180 $243
Cat 769 Haul Truck hrs $93.45 120 $11,214
Truck Drivers hrs $16.67 120 $2,001
Cat 988 Loader hrs $133.06 30 $3,992
Cat 365 Excavator $128.54 30
----_.._.._-_.-
hrs $3,856
Cat 330 wi PC-400 metalShears hrs $172.1'?:,30 $5,165
65 Ton Crane hrs $96.82 30 $2,905
30 Ton Crane hrs $59.58 15 $894
Equipment Maintenance (Butler)hrs $18.58 255 $4,739
Concrete Removal sf $3.30 15,000 $49,500
Total CCD Circuit Removal
Sample Plant Removal
Resource Description Units Cost/Unit Task Units
$89,746
Task Cost
Equipment Operators hrs $18.94 24 $455._.
Mechanics hrs $16.09 32 $515
Laborers hrs $12.51 16 $200
Small Tools hrs $1.35 48 $65
Cat 769 Haul Truck hrs $93.45 32 _._.$?~--Truck Drivers hrs $16.67 32 $534
Cat 988 Loader hrs $133.06 8 $1,064
Cat 365 Excavator hrs $128.54 8 $1,028
Cat 330 wi PC-400 metalShears hrs $172.17 8 $1,377
30 Ton Crane hrs $59.58 0 $0
EqUipment Maintenance (Butler)hrs $18.58 56 $1,041
Concrete Removal sf $3.30 4,200 $13,860
Total Sample Plant Removal
Boiler Demolition
Resource Description Units Cost/Unit Task Units
$23,129
Task Cost
Equipment Operators hrs $18.94 120 $2,273
Mechanics hrs $16.09 160 $2,575
Laborers hrs $12.51 80 $1,000
Small Tools hrs .._._.............~.:L~240 .___....__..$324._-~-~.._._._-~..,,-_.__.-~._-,._-..-""""'-~Cat 769 Haul Truck hrs $93.45 160 $14,952
Truck Drivers hrs $16.67 160 $2,668
Cat 988 Loader hrs $133.06 40 $5,322
Cat 365 Excavator hrs ___$gg.54 40 $5.142.....-.....................~-_..~_.--_.--_.-
Cat 330 wi PC-400 metalShears hrs $172.17 40 $6,887
65 Ton Crane hrs $96.82 0 $0
30 Ton Crane hrs $59.58 0 $0
Equipment Maintenance (Butler)hrs $18.58 280 $5,203
Concrete Removal sf $3.30 2,900 $9.570
Total Boiler Demolition
101512009·2:12 PM·Copyof WMM Ree Plan Est Sept2009 (2).xls
$55,916
Denison Mines(USA)Corp.
While Mesa Mill
MILL DECOMMISSIONING
Vanadium Oxidation Circuit Removal
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators hrs $18.94 48 $909
Mechanics hI's $16.09 64 $1,030
Laborers hI's $12.51 32 $400
Small Tools hI's $1.35 96 $130
Cat 769 Haul Truck hI's $93.45 64 $5,981
Truck Drivers hI's $1.§,,67 64 $1,067
Cat 988 Loader hrs $133.06 16 $2,129
Cat 365 Excavator hI's $128.54 16 $2,057,-~'"
Cat 330 wf PC·400 metalShears hI's $172.17 16 $2,755
65 Ton Crane hrs $96.82 _12 .$0
30 Ton Crane ~-,----~$59.58 $0hI's 0
Equipment Maintenance (Butler)hI's $18.58 112 l?2.Q.13J
Concrete Removal sf $3,30 1,200 $3,960
Total Vanadium Oxidation Circuit Removal
Main ShoplWarehouse Demolition
Resource Description Units Cost/Unit Task Units
$22,498
Task Cost
Equipment Operators hI's $18.94 96 $1,818
Mechanics hI's $16.09 128 $2,060
Laborers hI's $12.51 64 $800
Small Tools hI's $1.35 192 $259-~.~._~--
Cat 769 Haul Truck hI'S $93.45 128 $11,962
Truck Drivers hI'S $16.67 128 .$2,134---...._--.........""..."~>~~,,.~.._~~~..
Cat 988 Loader hI'S $133.06 32 $4,258
Cat 365 Excavator hI'S $128.54 32 ..._....,_t4.JJ}.
Cat 330 wf PC-400 metalShears hI'S I $172,17 32 $5,509
Equipment Maintenance (Butler)hI'S $18.58 224 $4,163
Concrete Removal sf $3.30 19,300 $63,690
Total Main ShoplWarehouse Demolition
Decon Pads (2)Demolition
Resource Description Units CostfUnit Task Units
$100,767
Task Cost
Equipment Operators hrs $18,94 48 $909
Mechanics hrs $16,09 64 $1,030
Laborers hI'S $12.51 32 $400
Small Tools D.@._____$1,35 96 $130_~___··_w~__
Cat 769 Haul Truck hI'S $93.45 64 55,981
Truck Drivers ~-~...._.....-$16.67 64 .._~
Cat 988 Loader hrs ---·----$133,06 16 52,129
Cat 365 Excavator hI'S $128.54 16 g057..
Cat 330 wf PC-400 metalShears hrs $172.17 16 $2,755
Equipment Maintenance (Butler)hI'S $18.58 112 $2,081
Concrete Removal sf $3.30 1,350 $4,455
Total Decon Pads (2)Demolition
10/512009·2:12PM-Copy ofWMM Rec PlanEstSept 2009 (2}xls
$22,993
Denison Mines (USA}Corp,
White Mesa Mill
MILL DECOMMISSIONING
Office BUilding Demolition
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators hrs $18.94 72 $1,364
Mechanics hrs $16.09 96 $1,545
Laborers hrs $12.51 48 $600
Small Tools hrs $1.35 144 $194
Cat 769 Haul Truck hrs $93.45 96 $8,971
Truck Drivers hrs $16.67 96 $1,601
Cat 988 Loader hrs $133.06 24 $3,193
Cat 365 Excavator hrs $128.54 24 $3,085
Cat 330 wi PC-400 metalShears hrs $172.17 24 $4,132
Equipment Maintenance (Butler)hrs $18.58 168 $3,122
Concrete Removal sf $1.25 12,100 $15,125
Total Office Building Demolition
Septic Tanks and Drain Fields
Resource Description Units Cost/Unit Task Units
$42,933
Task Cost
Equipment Operators hrs $1_~.94 16 _._--_._.~e.------...Mechanics hrs $16.09 0 $0
L.aborers hrs $12.51 16 $200
Small Tools hrs _Ji..1.:;3.?'.32 $43.--':-::-'cCat769HaulTruckhrs$93.45 16 $1,495
Truck Drivers hrs $16.67 16 $267
Cat 988 Loader hrs $133.06 8 _.__.$.J...~~___·_·'M"~"._._~.~_.~-~_.
Cat 365 Excavator hrs $128.54 8 $1,028
Cat 330 wi PC-400 metalShears hrs $172.17 0 $0
Equipment Maintenance (Butler)hrs $18:9_~32 $5~§.~.~,""'~.~~--
Total Septic Tanks and Drain Fields
Misc.Tankage &Spare Parts Removal
Resource Description Units Cost/Unit Task Units
$4,996
Task Cost
Equipment Operators hrs $18.94 36 $682
Mechanics hrs $16.09 48 $772
L.aborers hrs $12.51 24 $300
Small Tools hrs $t35 72 $97
Cat 769 Haul Truck hrs $93.45 48 $4,486
Truck Drivers hrs $16.67 48 $800
Cat 988 Loader hrs $13}.O6 12 $1,597..
Cat 365 Excavator hrs $128.54 12 $1,542
Cat 330 wi PC-400 metalShears hrs $172.17 12 $2.066
Equipment Maintenance (Butler)hrs $18.58 84 $1,561
Total Misc.Tankage &Spare Parts Removal
10/5/2009·2:12 PM-Copy of WMM Rec Plan Est Sept 2009(2).xl$
$13,904
Denison Mines (USA)Corp.
While Mesa MHI
MILL DECOMMISSIONING
Alternate Feed Circuit
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators hI's $18,94 112 $2,121
Mechanics hI's $16,09 48 $772
Laborers hI's $12.51 48 $600
Small Tools hI's $1,35 96 $130
Cat 769 Haul Truck hI's $93.45 48 $4,486
Truck Drivers hI's $16,67 48 $800
Cat 988 loader hI's $133,06 32 $4,258
Cat 365 Excavator hI's $128,54 32 $4,113
Cat 330 wi PC-400 metalShears hI's $172,17 48 $8,264
Equipment Maintenance (Butler)hI's $59,58 160 $9,533
Concrete Hemoval sf $3,30 2.500 $8,250
Total Decon Pads (2)Demolition
Mill Yard Decontamination
Resource Description Units Cost/Unit Task Units
$43.328
Task Cost
Equipment Operators hI's $18,94 582 $11,022
Cat 637 Scraper hI's $206,83 257 $53.156
Cat 988 Loader hI's $133,06 65 $8,649
Cat D8N Dozer With Ripper hI's $95,08 65 $6,180
Cat 07 Dozer hI's $80,39 65 $5,226
Cat 651 Waterwagon hI's $110,06 65 $7,154
Cat 14G Motorgrader hI's $70,19 65 $4,562
Equipment Maintenance (Butler)hI's $18,58 582 $10,816
Total Mill Yard Decontamination
Ore Storage Pad Decontamination
Resource Description Units Cost/Unit Task Units
$106,765
Task Cost
Equipment Operators hI's $18,94 429 $8,125
Cat 637 Scraper hI's $206,83 189 $39,091
Cat 988 Loader hI's $133,06 48 $6,387
Cat D8N Dozer With Ripper hI's $95,08 48 $4,564
Cat 07 Dozer Ill'S $80,39 48 $3,859
Cat 651 Waterwagon hI'S $110,06 48 $5,283
Cat 14G Motorgrader hI'S $70,19 48 $3,369
Equipment Maintenance (Butler)hI'S $18,58 429 $7,972
Total Ore Storage Pad Decontamination
Equipment Storage Area Cleanup
Resource Description Units Cost/Unit Task Units
$78,650
Task Cost
Equipment Operators hI'S $18,94 153 $2,898
Cat 637 Scraper hrs $206,83 68 $14,065
Cat 988 Loader hI'S $133,06 17 "____gZ§.~
._,~..._~_._--~~~-
_.
Cat D8N Dozer With Ripper hI'S $95,08 17 $1,616
Cat D7 Dozer hrs $80,39 17 $1,367
Cat 651 Waterwagon hI'S $110,06 17 $1,871
Cat 14G Motorgrader hrs $70,19 17 $1,193.----------,Equipment Maintenance (Butler)hrs $18,58 153 $2,843
Total Equipment Storage Area Cleanup
10/512009·2:12 PM-Copy ofWMM RaePI8nEst Sept 2009(2),xls
$28,115
Denison Mines(USA)Corp,
While Mesa Mill
MILL DECOMMISSIONING
Revegetate Mill Yard &Ore Pad
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators hrs $18.94 231 f---~?~
Cat 637 Scraper hrs $206.83 132 $27,302
Cat 988 loader hrs $133.06 0 $0
Cat 08N Dozer With Ripper hrs $95.08 33 $3,138
Cat 07 Dozer hrs $80.39 ,-Er-~---~Cat 651 Waterwagon hrs $110.06 0 $0
Cat 14G Motorgrader hrs $70.19 33 $2,316
Seed Mix Acre $322.50 50 $16,125
Equipment Maintenance (Butler)hrs ---'---.$18.58 231 $4,293
Total Revegetate Mill Yard &Ore Pad
Total Demolition and Decontamination
CLEANUP OF WINDBLOWN CONTAMINATION
Seoping Survey
Resource Description Units Cost/Unit Task Units
$60,202
$1,328,271(
Task Cost
Soil Samples each $50.00 100 $5,000
Survey Crew hrs $15.49 752 $11,647
Sample Crew hrs $15.49 1,312 $20,320
Total Scoping Survey $36,966
Characterization Survey
Resource Description Units Cost/Unit Task Units
Soil Samples eacl1 $50.00
Sample Crew hrs $15.49 1,136
Total Characterization Survey $41,194
Final Status Survey
Resource Description Units Cost/Unit Task Units Task Cost
Soil Samples each $50.00 300 $15,000
Sample Crew hrs $15.49 3,552 $55,012
Total Final Status Survey $70,012
101512000 -2:12 PM-Copy ofWMM Ree Plan Est Sept 2000 (2}.xls
Denison Mines (USA)Corp.
White Mesa Mill
MILL DECOMMISSIONING
Windblown Cleanup
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators hrs $1894 1,190 $22,537
Cat 637 Scraper hrs $206,83 680 $140,646
Cat D8N Dozer With Ripper hrs $95,08 170 $16,164
Cat D7 Dozer hrs $80,39 170 $13,667
Cat 14H Motorgrader hrs $70.19 170 $11,932
Soil Samples each $50.00 500 $25,000
Survey Crew hrs $15.49 163 $2,524
Sample Crew hrs $15.49 83 $1,285
EqUipment Maintenance (Butler)hrs -$18.58 1,190 $22,114
Total Windblown Cleanup $255,871
Quality Control
Resource Description
Quality Control Contractor !hrs
Units Cost/Unit
$62.001
Task Units
2,0801
Task Cost
$128,9601
Total Quality Control $128,960
Total Cleanup Windblown Contamination $533,0031
Conventional Ore Disposal
Task CostTaskUnitsCost/UnitUnitsResourceDescription ~
Equipment Operators hrs $18.94 1,310 s27f8051_.-_.-
Cat 769 Haul Truck (3)hrs $93.45 756 $70,635
Cat 988 Loader r0!S $133.06 252 $33,525
Cat 651 Waterwagon hrs $110.06 252 $27,731
Cat 148 Motorgrader hrs $70.19 50 $3,509
Equipment Maintenance (Butler)hrs $18.58 1,310 $24,340
Total Conventional Ore Disposal $184,5461
Total Quantity 148,148 Cubic Yards'
196 CubicYards per Truck per hour
756 Truck Hours
•200,000 tons maximum projected for December 2009
Alternate Feed Disposal
Cabot and FMRI Material
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators hrs $18.94 153 $2,899
Cat 769 Haul Truck (3)hrs $93.45 62 $5,778
Cat 988 Loader hrs $133.06 21 $2,742
Cat 651 Waterwagon hrs $110.06 21 $2,268
Cat 148 Motorgrader hrs $70.19 50 $3,509
Equipment Maintenance (Butler)hrs $18.58 153 $2,844
Total Cabot &FMRI Material $20,041
Total Quantity 12,119 CubicYards*(as of01/31/09)
196 Cubic Yards per Truck per hour
62 Truck Hours
101512000"2:12 PM"Copy ofWMM Rec Plan Est Sept2009 (2),xI5
Denison Mines (USA)Gorp.
White Mesa Mill
MILL DECOMMISSIONING
*Includes Linde,Cabot and FMRI
Cameco Barrels and Honeywell Barrels
Resource Description Units CoslJUnit Task Units Task Cost
Equipment Operators hrs $16.67 190 $3,176
Flat Bed Trailer and Tractor*hrs $55,00 190 $10,477
Fork Lift (2)hrs $18.00 381 $6,858
Equipment Maintenance (Butler)hrs $18,58 190 $3,531
Total Cameco and honeywell Barrels
*includes operator
Sub-Total Alternate Feed Disposal
TOTAL MILL DECOMMISSIONING
10/512009 -2:12 PM-Copy ofWMMRec Plan Est Sept2009(2).<ls
19,049 Barrels (as of 01/31/09)
40 Barrels per load
0.4 Hours per load
190 Trucl<Hours
$24,042
$44,0831
$2,089,9031
Denison Mines (USA)Corp.
While MesaMill
Mill Decommissioning
1)Removal of contaminated material from Mill Yard
Assume:
--18 inches (1.5 feet)will have to be removed
--Area (from CAD takeoff)=1,643,453 sq.feet
37.7 acres
Reviewed 07/17/09
~
Therefore:Volume moved =1,643,453 x 1.5]/27 =91,303 cubic yards
(use 91,300)
91,300 /355 cubic yards per hour =
IHaul route #2
2)Removal ofcontaminated material from Ore Pad
Assume:
--18 inches (1.5 feet)will have to be removed
--Area (from CAD takeoff)=976,780 sq.feet
22.4 acres
257 machine hours
Therefore:Volume moved =976,780 x 1.5]/27 =54,266 cubic yards
(use 54,300)
54,300 /287 cubic yards per hour =
IHaul route #3
3)Demolition Equipment
189 machine hours
--Kamatsu PL400 (or Cat equivalent)with LaBounty Sheers (hydraulic)
--Cat 365 Trackhoe with Grapples
--Cat 769 Rock Trucks (4 each)
--Cat 988 Loader (1 each)
4)Demolition Crew
--Heavy Equipment Operators -PC400,Cat 365,Cat 988
--Dust Control - 2 Laborers
--Mechanics -Cut debris to reduce/avoid oversize and voids - 4 each
--Truck Drivers - 4 each
Mill Decommissioning (con't)
5)Tool and Expendable Allowance,covering the following items:
page 2
--Safety gear and supplies
--Hand tools
--Bottled Gases and Torches
--Allow $1.30 per man-hour for all but Heavy Equipment Operators and Truck Drivers
6)Demolition Time Estimates
--Mill Building
-- Ore Bin
--SX Building
--CCD,Pre-Leach,
Claricone
--Sample Plant
--Boiler House
--Vanadium EMF/Ox
--Shop/Warehouse
--Office/Lab Building
--Misc.&Bone Yard
--Decon Pads (2)
7)Foundation Demolition
20 Days
2 Days
10 Days
5 Days
1 Day
5 Days
2 Days
4 Days
3 Days
4 Days
2 Days
--Assume area ofstructure times $3.30 per square foot
--Areas by building as follows:
Area,sq ft $Cost
Mill Building
SX Building
CCD,Pre-Leach,
Claricone
Shop/Warehouse
Office*
Sample Plant
Vanadium EMF/Ox
Boiler house
Decon Pads
37,500 $123,750
55,970 $184,701
15,000 $49,500
19,300 $63,690
12,100 $15,125
4,200 $13,860
1,200 $3,960
2,900 $9,570
1,350 $4,455
--Labor at $2.75,Equipment at $0.55
--*Labor at $0.70,Equipment at $0.55
8)Revegetation
Assume:
Mill Decommissioning (con't)page 3
--Mill Yard Area
--Ore Pad Area
1,643,453 sq.feet
976,780 sq.feet
[1,643,453
--Place 6 inches ofTopsoil
--Cat 637 Scrapper,Haul Route #4
976,780 ]sq.feet x 0.5 feet]/[27 cubic feet /cubic Yard]
Use 48,600 Cubic Yards
48,523 cu yds
48,600 /368 cu yds per hour =132 Scrapper hours
COST ESTIMATE'
I
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COST ESTIMATE
,::;.:::r~..,I'~c..,50 r?-'J6......=tr,,-~7;4¥":-:r~""'<2~c~/0 x·/J c;r.("~.t;;
,:;.:>./c,..../0 ".~~0./.R./.,h,'-C./iT?C--"1 (~C"Z.NU';t..6'-6 58<f9..J
11/.520-",/lJP Y _334 ~y/tJ:!oJCJ 1
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,2)~/'.s-<;"7~~/'2~7""'''./.::rt,/~w~-
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/00 G~/~
47>(2...x:6::J75ZJ,~.t /
COST ESTIMATE
/
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y ,/:;,
('...,,,,,....(1.,~----
472/
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4 J72/'"4
·c~(~~iw ~~~1~~~T
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.~(~T~~~'b~~/~~
e'8 r:200'".LbO].;,~S'3 ~~d~~.
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~~
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<'9 fts rr .,S Ncr ~~Wt-l'~U~IAAttf 'BG;"e()I'.ll"t~(~tl~M'&."i'f.l.e.·U~ci:"'31 .~.~~-'"~k ~
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'<jNivilYlf Iflllinilll~@IrY ACCiyu.mltJll!ilg §Ulfll:l1ill21ry
Jaml.ilJ)!2009
Wit!iiM AIL'fERNATE fEED RECEIPTS
FOR THEMONTH rENDING Jarwary $1,ZOO£}
379
September
DryTons Received
J"ne :lli!l!
Cab::;t
Calcined Pwduct-C-amecll
CaF2
F'ansleeUFMRI 379
I<F f'rodtlc"i-Cameco
RegenProduct-GamecoUP"Mater;al-Cameco •~=~=_.-:::::=_
===37..e==_~====.=__~===_=======..,;;,,__===,.,;..,===__P_..~
WMM 11le2 Mate!'ialIlReceipts
FOR THE f\lfONiH ENDfNGJanuary 31,2009
Janilll:mr ':"2ml'll';,:l\IJarc~~Jl:'!!!J[~:1!!!JI:August September Otltober November Deilember Tol",!TID ReceilfEd
Mes~na 19 191Jf'lJ -:8=.;3c-...-""'3"'~~
~~
WMM AlTERN/&.'IE FEED Ending If1Iventoi'1t
FOR THE MONTH ENDiNG ,January31.2009
Plio?Yea.End!n2
~gOOSU£):2008Tons Maler/al
Balance ~~~
Cabot 5,184 5,184
CaF2.-Honeywell 1,083 '/,083
Calcined Product·Cameco 1,247 1,247
Fanste"UFlI/.R1 10,796 379 i1,177
I<F Pfoduct-Cameco i ,007 1,007
Regen Produ(;l-Cameeo 185 185
UF4 Material·Cameco_~::i2"'O::2:-_""""'=,._--~---....",~20:;;2;:_
19,705 379 20,084
A"""aas U30ll
~
O.S·a,5%nonien!
0.5-3.0%conlent
4.5~~<:-Dnten~
0.25'0.5%content
1%content
1-8.lJ%cootent
75oS0%conlent
Harold Roberts
From:
Sent:
To:
Subject:
Harold,
This is what I found:
Ryan Palmer
Monday,February 16,2009 2:35 PM
Harold Roberts
RE:Alternate feed barrels
Alternative Feed Materials
Total Drum count in Inventory
Alternative
Feed
K-F
Calcine
Regen
UF4
CaF-2
Ryan Palmer
Wally B.ending balance 2001
6,001
3,600
568
1
3,005
It Drums
Received 01-
current
517
4,200
342
815
Total Inventory
6,518
7,800
910
816
3,005
1:435-678-2221 x102 I I:435-678-2224
6425 S.Highway 191,PO Box 809,Blanding,UT 84511
DENISON MINES (USA)CORP
www.denisonmines.com
This e-mail isintendedforexclusiveusetheperson(s)mentionedastherecipient(s).This message and any attached liles with it are confidential and maycontain privileged
or proprietary information.If you are not the intended recipient(s)please delete this message and notifythe sender.You may not use,distribute print or copy this message if
you are not the intended recipient(s).
From:Harold Roberts
Sent:Monday,February 16,2009 1:41 PM
To:Ryan Palmer
Subject:Re:Alternate feed barrels
Ryan:
I need the total number of barrels of UF4,calcined,KF,regen and Honeywell alternate feed material on site as of
January 31,2009.
Thanks,
Harold Roberts
E:xecutive Vice FJresicJenl.
1:[phone] I f:[phone]
1050 17th Street,Suite 950,Denver,CO 80265
1
DENISON MINES (USA)CORP
www.denisonmines.com
II~VOIC[I\)UMBER
II~VOICE D!~TE
S/',L[SPERSON NO.
DUE D,l>,TE
DiSCOUNT DATE
PAGE
SOL.D TO:
"j -:
~::.(U
I'j I:\'J../\
ChequeDate IDocument Number
Net.·AmountPaid
37?38
Discount I
4/17/2009 100372381°0000000000009491
Amount 1 Amount Paid
IPaymentNumber
Our Voucher Number IDate I
VendorlD lName
CAR004 ICarhart Feed and Seed
IENISON MINES (USA)CORP.
311190 3/30/2009
311687 4/7/2009
$2,430.83 $2,430.83
$9.47 $9.47
$0.00
$0.00
$2,430.83
$9.47
$2,440.30 $2,440.30 $0.00 $2,440,30
REORDER FROM YOUR LOCAL SAFEGUARD DISTRIBUtOR.IF UNKNOWN,CALL800-523-2422 H0005R0010000 M04SF020420
Harold Roberts
From:
Sent:
To:
Subject:
Christy Woodward
Thursday,June 25,20093:45 PM
Harold Roberts
Seed
On average,we have been paying $21 per pound of seed and apply it at $15 Ibs per acre (also an average).
Christy Woodward
Environmental Coordinator
t:[phone] Ic:[phone] I f:[phone]
1050 17th Street,Suite 950,Denver,CO 80265
DENISON MINES (USA)CORP
www.denisonmines.com
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1
Cell 1
RECLAMATION OF CELL 1
RECLAMATION OF CELL 1
Dewatering of Cell 1
Resource Description
Dewatering of Ceil 1
Total Dewatering of Cell 1
Crystal Removal
Resource Description
Ihrs
Units
Units
Cost/Unit
$0.481
Cost/Unit
Task Units
62,400 I
Task Units
Task Cost
$30,00°1
$30,000
Task Cost
Equipment Operators hrs $18.94 2,695 $51,040
Cat 769 Truck hrs $93.45 2,157 $201,573
Truck Drivers hrs $16.67 2,157 $35,966
Cat 988 Loader hrs $133.06 539 $71,719
Cat D8N Dozer With Ripper hrs $95.08 539 $51,251
Cat 365 Excavator hrs $128.54 539 $69,284
Cat 651 Waterwagon hrs $110.06 539 $59,325
Cat 14G Motorgrader hrs $70.19 539 $37,832
Equipment Maintenance (Butler)hrs $18.58 4,852 $90,168
Total Crystal Removal
Contaminated Materials Removal
Resource Description Units Cost/Unit Task Units
$668,155
Task Cost
Equipment Operators hrs $18.94 616 $11,666
Cat 637 Scraper hrs $206.83 308 $63,704
Cat D8N Dozer With Ripper hrs $95.08 77 $7,322
Cat 825C Compactor hrs $95.38 77 $7,344
Cat 651 Waterwagon hrs $110.06 77 $8,475
Cat 14G Motorgrader hrs $70.19 77 $5,405
Equipment Maintenance (Butler)hrs $18.58 616 $11,447
Total Contaminated Materials Removal
Topsoil Application
Resource Description Units Cost/Unit Task Units
$115,363
Task Cost
Equipment Operators hrs $18.94 240 $4,545
Cat 637 Scraper hrs $206,83 120 $24,820
Cat D8N Dozer With Ripper hrs $95.08 40 $3,803
Cat 651 Waterwagon hrs $110.06 40 $4,403
Cat 14G Motorgrader hrs $70.19 40 $2,808
Equipment Maintenance (Butler)hrs $18.58 240 $4,460
Total Topsoil Application
10/5/2009-2:12 PM -Copyof WMM Rec Plan Est Sept 2009(2).xls
$44,839
Denison Mines (USA)Corp.
White Mesa Mill
RECLAMATION OF CELL 1
Construct Channel
Resource Description Units CosllUnit Task Units Task Cost
Equipment Operators hrs $18.94 858 $16,250
Cat 637 Scraper hrs $206.83 272 $56,258
Cat 769 Truck hrs $93.45 450 $42,053
Truck Drivers hrs $16.67 450 $7,503
Cat 988 Loader hrs $133.06 150 $19,959
Drilling &Blasting Contractor BCY $2.33 89,100 $207,475
Cat 14G Motorgrader hrs $70.19 218 $15,301
Cat D8N Dozer With Ripper hrs $95.08 218 $20,728
Equipment Maintenance (Butler)hrs $18.58 1,308 $24,307
Total Construct Channel
Place Clay Liner
Resource Description Units CosllUnit Task Units
$409,835
Task Cost
Equipment Operators hrs $18,94 355 $6,723
Cat 637 Scraper hrs $206,83 0 $0
Cat 825 Compactor hrs $95,38 60 $5,723
Cat D8N Dozer With Ripper hrs $95.08 60 $5,705
Cat 07 Dozer hrs $80.39 °$0
Cat 651 Waterwagon hrs $110.06 60 $6,604
Cat 980 Loader hrs $103.73 60 $6,224
5000 Gallon Water Truck hrs $63.90 30 $1,917
Highway Trucks hrs $63.33 435 $27,54'1
Truck Drivers hrs $16.67 435 $7,253
Cat 14G Motorgrader hrs $70.19 85 $5,966
Equipment Maintenance (Butler)hrs $18.58 1,225 $22,765
Total Place Clay Liner
Place Lower Random Fill
Resource Description Units CosllUnit Task Units
$96,427
Task Cost
Equipment Operators hrs $18.94 602 $11,401
Cat 637 Scraper hrs $206,83 172 $35,575
Cat 825 Compactor hrs $95,38 86 $8,202
Cat D8N Dozer With Ripper hrs $95.08 86 $8,177
Cat 07 Dozer hrs $80.39 86 $6,914
Cat 651 Waterwagon hrs $110.06 86 $9,466
Cat 14G Motorgrader hrs $70.19 86 $6,036
Equipment Maintenance (Butler)hrs $18,58 602 $11,187
Total Place Lower Random Fill
10/5/2009·2:'12 PM '.Copy ofWMM Rae Plan EstSept 2009 (2),xls
$96,959
Denison Mines (USA)Corp.
White Mesa Mill
RECLAMATION OF CELL 1
Clay Cap
Resource Description Units CostJUnit Task Units Task Cost
Equipment Operators hrs $18.94 305 $5,776
Cat 637 Scraper hrs $206.83 0 $0
Cat 825 Compactor hrs $95.38 55 $5,246
Cat D8N Dozer With Ripper hrs $95.08 55 $5,230
Cat 07 Dozer hrs $80.39 0 $0
Cat 651 Waterwagon hrs $110.06 55 $6,054
Cat 14G Motorgrader hrs $70.19 55 $3,860
Cat 980 loader hrs $103.73 55 $5,705
5000 Gallon Water Truck hrs $63.90 30 $1,917
Highway Trucks hrs $63.33 440 $27,863
Truck Drivers hrs $16.67 440 $7,337
Equipment Maintenance (Butler)hrs $18.58 305 $5,668
Total Place Clay Cap $74,656
Task CostTaskUnitsCostJUnitUnits
Upper Random Fill
Resource Description
Equipment Operators hrs $18.94 688 $13,030
Cat 637 Scraper hrs $206.83 172 $35,575
Cat 825 Compactor hrs $95:38 86 $8,202
Cat D8N Dozer With Ripper hrs $95.08 86 $8,177
Cat 07 Dozer hrs $80.39 86 $6,914
Cat 651 Waterwagon hrs $110.06 86 $9,466
Cat 14G Motorgrader hrs $70.19 86 $6,036
5000 Gallon Water Truck hrs $63.90 86 $5,496
Equipment Maintenance (Butler)hrs $18.58 688 $12,786
Total Place Upper Random Fill $105,682
10/5/2009·2:12 PM·Copy ofWMM Rec Plan Est Sept 2009 (2).XIS
Denison Mines (USA)Corp.
White MesaMill
RECLAMATION OF CELL 1
Rock Armor
Resource Description Units CosUUnit Task Units Task Cost
Equipment Operators hrs $18.94 90 $1,704
Cat 07 Dozer hrs $80.39 30 $2,412
Cat 651 Waterwagon hrs $110.06 30 $3,302
Cat 14G Motorgrader ---'---hrs $70.19 30 $2,106
Rock Cost Delivered CY $5.77 8,607 $49,631
Equipment Maintenance (Butler)hrs $18.58 90 $1,673
Total Place Rock Armor
Quality Control
Resource Description
Quality Control Contractor
Total Quality Control
TOTAL RECLAMATION OF CELL 1
lhrs
Units
$60,828
CosUUnit Task Units Task Costc==$62.001 8_0-,01__$_49-:...,6_0---,0I
$49,600
$1,752,3441
10/5/2009 -2:12 PM -Copyof WMM Rec Plan Est Sept 2009 (2).xls
Denison Mines (USA)Corp.
White Mesa Mill
Franklin Drilling &Blastingi Inc
P.O.Box 2246
Durango,CO 81392
Phone:[phone]
Fax:[phone]
Mobile:[phone]
Email:[e-mail]
February 24,2009
Ms.Amy Bushman
Denison Mines
Re:Spillway blasting in Blanding,Utah
Wally Bryce gave us this information to base our bid on:
Quantity of apprOXimately 89,000 in-bank cubic yards.
Average depth of cut:apprOXimately 10 feet deep
Working the numbers backwards,10 feet deep by 40 feet wide would
require a spillway of approximately 6000 feet in length.Is this about right?
If this is correct,with a 9 feet by 9 feet pattern our price would be $2.25 per
in-bank cubic yard tor dry conditions.If water infiltrates into the bore holes
and requires wet hole product.we will charge an additional fee.The fee will
be the invoice cost of wet hole product delivered,plus 25%mark up to
cover additional labor.
Our mobilization for 2 drills and supplies will be $7000.
Production rates of about 2000 cubic yards per drill can be expected.With
two drills drilling,and a 90%availability rate,that will be about 3600 cubic
yards drilled per day.This should amount to about 25 working days.Wi/I
that be fast enough for your needs?
Please call if you have any further questions.
Regards.
Jeff
GO 39\.1d 0(';9S59z:0L5
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INTEANATIONAl URANIUM (USA)CORP.
COST ESTIMATE
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5604MSL
Outlet Channel
OF CELL
BREACHED
Cell 1-1
AREA
TO BE
Top ofBedrock (sandstone)5615 MSL
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Cell 2
RECLAMATION OF CELL 2
Obtain Permits for Clay Borrow Site"Section 16
Resource Description Units
Permits &Licenses I.:::ea:::.-_
Total Obtain Permits for Clay Borrow Site"Section 16
Cost/Unit Task Units Task Cost
$1 0,000.001 -C:51L----.:$c:::5.:::!0,"'00o::O I
$50,000
Place Remainder of Bridging (Platform)Lift
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators hrs $18.94 0 $0
Cat 627F Scraper hrs $206.83 0 $0
Cat 815C Compactor hrs $95.38 0 $0
Cat D8N Dozer With Ripper hrs $95.08 0 $0
Cat D7 Dozer hrs $80.39 0 $0
Cat 651 Waterwagon hrs $110.06 0 $0
Cat 14G Motorgrader hrs $70.19 0 $0
Equipment Maintenance (Butler)hrs $18.58 0 $0
Total Place Remainder of Bridging (Platform)Lift $0
Place Lower Random Fill (12")
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators -$17,083hrs$18.94 902
Cat 637 Scraper hrs $206.83 402 $83,147
Cat 825 Compactor hrs $95.38 100 $9,538
Cat D8N Dozer With Ripper hrs $95.08 100 $9,508
Cat D7 Dozer hrs $80.39 100 $8,039
Cat 651 Waterwagon hrs $110.06 100 $11,006
Cat 14G Motorgrader hrs $70.19 100 $7,019
Equipment Maintenance (Butler)hrs $18.58 902 $16,762
Total Place Lower Random Fill (12")$162,103
Task CostTasl<UnitsCost/UnitUnitsResourceDescription
Clay Layer
"Equipment Operators hrs $18.94 1,720 $32,575
Cat 825 Compactor hrs $95.38 325 $30,998
Cat D8N Dozer With Ripper hrs $95.08 300 $28,525
Cat D7 Dozer hrs $80.39 0 $0
Cat 651 Waterwagon hrs $110.06 300 $33,019
Cat 14G Motorgrader hrs $70.19 320 $22,460
Cat 980 Loader hrs $103.73 300 $31,119
5000 Gallon Water Truck hrs $63.90 175 $11,183
Highway Trucks hrs $63.33 2,400 $151,982
Truck Drivers hrs $16.67 2,400 $40,018
Equipment Maintenance (Butler)hrs $18.58 1,720 $31,964
Total Place Clay Layer $413,844
10/5/2009 -2:12PM -Copy ofWMM Rec Plan EstSept 2009 (2).xls
Denison Mines (USA)Corp.
While Mesa Mill
RECLAMATION OF CELL 2
Upper Random Fill
Resource Description Units CosUUnit Task Units Task Cost
Equipment Operators hrs $18.94 1,990 $37,688
Cat 637 Scraper hrs $206.83 796 $164,639
Cat 825 Compactor hrs $95.38 199 $18,980
Cat D8N Dozer With Ripper hrs $95.08 199 $18,922
Cat 07 Dozer hrs $80.39 199 $15,998
Cat 651 Waterwagon hrs $110.06 199 $21,903
Cat 14G Motorgrader hrs $70.19 199 $13,968
5000 Galion Water Truck hrs $63.90 199 $12,717
Equipment Maintenance (Bulier)hrs $18.58 __1,990 $36,981
Total Place Upper Random Fill
Rock Armor
Resource Description Units CosUUnit Task Units
$341,796
Task Cost
Equipment Operators hrs $18.94 825 $15,625
Cat 07 Dozer hrs $80.39 275 $22,108
Cat 651 Waterwagon hrs $110.06 275 $30,268-Cat 14G Motorgrader hrs $70.19 275 $19,302
Rock Cost Delivered CY $5.77 66,200 $381,736
Equipment Maintenance (Bulier)hrs $1858 825 $15,331
I""hr_s '--_-'$_62_.0_0.L1 1-,,0,-,,-501_--,-$6""5-,,10_0I
Total Place Rock Armor
Quality Control
Resource Description
Quality Control Contractor
Total Quality Control
TOTAL RECLAMATION OF CELL 2
10/5/2009 -2:12 PM-Copyof WMM Rec Plan Est Sept 2009 (2).xls
Units
$484,370
CosUUnit Task Units Task Cost
$65,100
I $1,517,2131
Denison Mines {USA}Corp.
White Mesa Mill
Volume Calculation -Cell 2
/
1)Area of Cell 2 -2,986,660 sq ft =68.56 acres
Reviewed 02/16/09
;/&c.
2)Area of Cell 2 still open as of February 21,2008 (see Figure A)
Area totally covered
3)Assumptions
Use sq ft
0.0 acres
-Bridging layer is placed using random fill from piles west of Cell 2
-Cell will be graded to Design elevation utilizing finer materials in random fill stockpiles
and from "clay"stockpiles.
-Clay will be mined,blended,and hauled from borrow site location in Section 16 -
four miles south of the mill area,using belly dump trucks,clay layer on top of Cell only,
except on south slope common to Cell 3.
-The upper 1 foot of random fill will be placed utilizing the fine random fill and clay stockpiles
-Rock for side armor,top armor and toe aprons will come from an off-site gravel source
one (1)mile north of Blanding.Rock will be produced through screening,stockpiled and
trucked to the site at the time of use.Belly dump trucks will dump gravel in windrows
on the top and sides of the Cell.
4)Bridging Layer (Platform Fill)Remaining to be placed
sq ft X 3 ft./27 cubic feet per cubic yard =
5)Bring Platform Fill up to Design elevation (Lower Random)
Assume full area of Cell X one (1)foot thick
2,986,660 sq ft X 1 ft./27 cubic feet per cubic yard =
6)Placement of Clay Layer (One (1)foot thick on top of Cell only)
Assume full area of Cell X one (1)foot thick
2,986,660 sq ft X 1 ft./27 cubic feet per cubic yard =
cubic yards
Use l c_ub_i_c..:,y_a_rd_s__
110,617 cubic yards
Use I 110,700 cubic yards
110,617 cubicyards
Use I 110,700 cubic yards
Volume Calculation -Cell 2 (con't)page 2
7)Upper Random Fill Volume -Top of Cell area
Assume full area of Cell X one (2)foot thick
2,986,660 sq ft X 2 ft./27 cubic feet per cubic yard =
8)Armor Protection -Top of Cell
Assume full area of Cell X one-half (0.5)foot thick
221,234 cubic yards
Use I 221,300 cubic yards
2,986,660 sq ft X 0.5 ft./27 cubic feet per cubic yard =55,309 cubic yards
Use ~55,400 cubic yards
9)Cell 2 North Slope (Slope #1 )common with Cell 1-1
Average height
Length
12 feet
2600 feet
a)Random fill to reduce slope from 3:1 to 5:1
First Wedge [12 X 12 X 5)/2 -(12 X 12 X 3)/2]X 2600
=374,400 cubic feet!27 =
Remaining Random Fill
[15 X 15 X 5)/2 -(12 X 12 X 5)/2]X 2600
=526,500 cubic feet!27 =
Total Random Fill North Slope
13,867 cubic yards
Use I 13,900 cubic yards
19,500 cubic yards
Use I 19,500 cubic yards
33,400 cubic yards
b)Rock Armor 8"thick -0.67 feet
[15.67 X 15.67 X 5)/2 -(15 X 15 X 5)/2]X 2600
=133,568 cubic feet!27 =4,947 cubic yards
Use 1...__5,;".,0.";,0.;.0...;",cu_b_ic,;,,,y;l,.a_r.;.ds~
c)Toe Apron
Total Rock Armor Cell 2 north Slope
2 X 7 X 2600 /27 =1,348 cubic yards
Use 1..._.";,1,;".,4.,,;,0.;;.0...,;;,;cu;;;,;;b;,;,ic;..y;l,.a;;;.r.;;.ds;;..,,,.,l
6,400 cubic yards
Volume Calculation -Cell 2 (can't)page 3
10)North Slope common with Mill yard (Slope #2 )
Average height
Length
1 feet
900 feet
a)Random fill to reduce slope from 3:1 to 5:1
First Wedge [1 X 1 X 5)/2 -(1 X 1 X 3)/2]X 900
900 cubic feet!27 =
Remaining Random Fill
[4 X 4 X 5)/2 -(1 X 1 X 5)/2]X 900
=33,750 cubic feet!27 =
Total Random Fill North Slope
33 cubic yards
Use 1..._......;1_0..0...;;"cu...b..ic.;..;:.ya...r_ds......
1,250 cubic yards
Use 1...__1.:..,,3_0_0_c_u_b_ic_ya..r_ds_
1,400 cubic yards
b)Rock Armor 8"thick -0.67 feet
[4.67 X 4.67 X 5)/2 -(5 X 5 X 5)/2]X 900
=13,070 cubic feet/27 =484 cubic yards
Use 1..._......;5_0_0_c..u...b_ic..y;:..a...r_ds_
c)No Toe Apron on fill common with Mill Yard
Total Rock Armor on slope commmon to Mill Yard
11)Cell 2 West Dike (Slope #3 )
500 cubic yards ,
Average height
Length
2 feet
500 feet
a)Random fill to reduce slope from 3:1 to 5:1
First Wedge [2 X 2 X 5)/2 -(2 X 2 X 3)/2]X 500
=2,000 cubic feet!27 =74 cubic yards
Use ~.......__1_0_0_c_u_b_ic_ya_r_ds_
Volume Calculation -Cell 2 (can't)page 4
Remaining Random Fill
[2 X 2 X 5)/2 -(2 X 2 X 3)/2]X 500
Total Random Fill North Slope
=2,000 cubic feet!27 =74 cubic yards
Use 1__..;,1,,;.00.;....c;;.;u;;.;b.;.ic~y;l,,;a;;.;.r.;,;,ds.;;.....l
200 cubic yards I
b)Rock Armor 8"thick -0.67 feet
[5.67 X 5.67 X 5)/2 -(5 X 5 X 5)/2]X 500
8,936 cubic feet!27 =331 cubic yards
Use 11.._......;4..;,0";.0.....;;,;cu;;,;;b;,,;,ic;;,,,;r.;ya;;;,;r,,;;,;d,;;,s....J
c)Toe Apron Not required for slope 10 feet long -Drainage from Cell goes south to Cell 3
and then off of south slope of Cell 3
Total Rock Armor Cell 2 north Slope
12)Cell 2 East Dike (Slope #4 )
400 cubic yards I
Average height
Length
a)Random Fill Wedge from #10
1 feet
1250 feet
1 cubic foot per linear foot X 1250 46 cubic yards
Use 11..__1..;,0,,;.0_c.;.u;;.b;..ic.;..;:.ya;;.;.r..;,d.;.s....
b)Remaining Random Fill from #10
37.5 cubic foot per linear foot X 1250/27
Total Random Slope #4
1,736 cubic yards
Use 1...__1;".,8_0_0_c_u_b_ic.......ya_r_d.;.s....
1,900 cubic yards
c)Rock Armor 8"thick -0.67 feet from #10 14.52 cubic feet per linear foot of dike
14.52 cubic foot per linear foot X 1250 /27
c)Toe Apron Not required
=672 cubic feet!27 =672 cubic yards
Use 1......;__7..;,0.;,;,0_c.;.u;;.b...ic~y;l,,;a;;.;.r..;,ds.;;.....l
Total Rock Armor Cell 2 north Slope 700 cubic yards I
Volume Calculation -Cell 2 (con't)page 5
13)South Slope Cell 2 commom with Cell 3 (Slope #5 )
Average height
Length
3 feet
3500 feet
a)Random fill to reduce slope from 3:1 to 5:1
Random Fill [3 X 3 X 5)/2 -(3 X 3 X 3)/2]X 3500
:::31,500 cubic feet!27 :::1,167 cubic yards
Use I 1,200 cubic yards
Random Fill Upper
[6 X 6 X 5)/2 -(4 X 4 X 5)/2]X 3500
:::175,000 cubic feet!27:::6,481 cubic yards
Use I 6,500 cubic yards
b)Clay Layer
[4 X 4 X 5)/2 •(3 X 3 X 5)/2]X 3500
61,250 cubic feet!27 :::2,269 cubic yards
Use I 2,300 cubic yards
c)Rock Armor 8"thick -0.67 feet
[6.67 X 6.67 X 5)/2 -(6 X 6 X 5)/2]X 3500
74,278 cubic feet!27 :::2,751 cubic yards
Use l 2,800 cubic yards
No Toe Apron
Total Rock Armor on slope Cell 2 Slope commmon to Cell 3 2,800 cubic yards I
+
1 ;
+_..
@ ft!,j ~-",r\~i +""'"/)
I IJ
I
11 ,/
~~,-/.,,---j
-.,,/
.....:.~':.I ........."--.,"4'.,.......
II·-
Section A - A (not to scale)
Showing Cover
RockAnnor (6"Top)
CELL 1+=1
+ +
Cell 2 "olume Calculations
Scale 1"=300 feet
Typical Section through Exterior Dike
+
RandomFill
Clay
RandomFi11
Tailings
Dike
3:1
A
BottomofCell I-I
After crystal and Liner Removal
A'
Area Modified for Celll~IDisposal Area
Toe Apron
Top of Cell
North (Slope #1 )
North (Slope #2 )
West (Slope #3 )
East (Slope #4 )
South (Slope #5 )
Totals
Volume Summary -Cell 2
Lower Upper Rock
Bridaina Laver Random Clav Random Armor
-110,700 110,700 221,300 55,400
13,900 19,500 6,400
100 1,300 500
100 100 400
100 1,800 700
1,200 2,300 6,500 2,800
-126,100 113,000 250,500 66,200
Cell 2 Reclamation
Cat 637 Resource Requirements
Volume Route Yds/hr %Equip.Hr.
Cell 2 Bridging Lift
Tailings Surface -5 296 100%0.0
Cell 2 Lower Random Fill
Tailings Surface 110,700 5 296 67%250.6
Tailings Surface 110,700 4 368 33%99.3
Slope 1 13,900 5 296 100%47.0
Slope 2 100 4 368 100%0.3
Slope 3 100 5 296 100%0.3
Slope 4 100 4 368 100%0.3
Slope 5 1,200 5 296 100%4.1
Total 401.7
Cell 2 Lower Random Fill
Tailings Surface 221,300 5 296 67%500.9
Tailings Surface 221,300 4 368 33%198.4
Slope 1 19,500 5 296 100%65.9
Slope 2 1,300 4 368 100%3.5
Slope 3 100 5 296 100%0.3
Slope 4 1,800 4 368 100%4.9
Slope 5 6,500 5 296 100%22.0
Total 796.0
Cell 2 Rock Armor --use Highway Trucks
Clay Volume =
=
Clay Production Cell 2
(use same assumptions as Cell 3 )
113,000 Bank Cubic Yards (BCY)
0.8 Swell Factor
141,250 Loose Cubic Yards (LCY)
Trucking 475 LCY/hr
150,000 LCY I 475 LCY/hr =
use
8 trucks plus one (1)Loader
297 hours
300 hours
980 Loader
D8N wi ripper
Cat 651 WW
Cat 825 Compo
14G Patrol
5000 gal WW
300 X 8 Trucks =2400 hours
Hours
300
300
300
325
325
175
Rock Armor Production Cell 2
66,200 cubic yards (cy)
38 cy per hour times 8 trucks
304 cy per hour delivered
Assume 25%extra time for spreading,loading and screen wait
304 11.25 243.2 cy per hour 272 Hours
INTERNATJONAL URANIUa..I (USA)CORP.
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Cell 3
RECLAMATION OF CELL 3
RECLAMATION OF CELL 3
Units
Dewatering of Cell 3
Resource Description
Dewatering of Cell 3
Cost/Unit Task Units Task Cost
Il-hr_s "---__~~__6_2,'_40_0_"_1__$_30_,0_O__"OI
Total Dewatering of Cell 3 $30,000
Task CostTaskUnitsCost/UnitUnits
Place Remainder of Bridging (Platform)Lift
Resource Description
"Equipment Operators hrs $18.94 1,402 $26,548
Cat 63'7 Scraper hrs $206.83 623 $128,857
Cat 825 Compactor hrs $95.38 156 $14,855
Cat D8N Dozer With Ripper hrs $95.08 156 $14,809
Cat 07 Dozer hrs $80.39 156 $12,521
Cat 651 Waterwagon hrs $110.06 156 $17,143
Cat 14G Motorgrader hrs $70.19 156 $10,932
Equipment Maintenance (Butler)hrs $18.58 1,402 $26,050
Total Place Remainder of Bridging (Platform)Lift $251,714
Place Lower Random Fill (12")
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators hrs $18.94 1,422 $26,931
Cat 637 Scraper hrs $206.83 452 $93,488
Cat 825 Compactor hrs $95.38 194 $18,503
Cat D8N Dozer With Ripper hrs $95.08 194 $18,446
Cat 07 Dozer hrs $80.39 194 $15,597
Cat 651 Waterwagon hrs $110.06 194 $21,353
Cat 148 Motorgrader hrs $70.19 194 $13,617
Equipment Maintenance (Butler)hrs $18.58 1,422 $26,426
Total Place Lower Random Fill (12")$234,361
Clay Layer
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators hrs $18.94 1,835 $34,753
Cat 637 Scraper hrs $206.83 °$0"
Cat 825 Compactor hrs $95.38 350 $33,382
Cat D8N Dozer With Ripper hrs $95.08 320 $30,427
Cat 07 Dozer hrs $80.39 °$0
Cat 651 Waterwagon hrs $110.06 320 $35,221
Cat 148 Motorgrader hrs $70.19 350 $24,566
Cat 980 Loader hrs $103.73 320 $33,194
5000 Gallon Water Truck hrs $63.90 175 $11,183
Highway Trucks ~"$63.33 2,560 $162,115
Truck Drivers hrs $16.67 2,560 $42,685
Equipment Maintenance (Butler)hrs $18.58 1,835 $34,101
Total Place Clay Layer $441,627
10/5/2009·2:12 PM"Copy ofWMM Ree Plan Est Sept2009 (2).xls
Denison Mines(USA)Corp.
White Mesa Mill
RECLAMATION OF CELL 3
Upper Random Fill
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators hrs $18.94 2,364 $44,762
Cat 637 Scraper hrs $206.83 868 $179,531
Cat 825 Compactor hrs $95.38 249 $23,'773
Cat DeN Dozer With Ripper hrs $95.08 249 $23,700
Cat 07 Dozer hrs $80.39 249 $20,038
Cat 651 Waterwagon hrs $110.06 249 $27,434
Cat 14G Motorgrader hrs $70.19 249 $17,494
5000 Gallon Water Truck hrs $63.90 249 $15,928
Equipment Maintenance (Butler)-hrs $18.58 2,364 $43,922
Total Place Upper Random Fill $396,582
Task CostTaskUnitsCost/UnitUnits
Rock Armor
Resource Description .
Equipment Operators hrs $18.94 819 $15,511
Cat 07 Dozer hrs $80.39 273 $21,948
Cat 651 Waterwagon hrs $110.06 273 $30,048
Cat 14G Motorgrader hrs $70,19 273 $19,161
Rock Cost Delivered CY $5,77 66,380 $382,774
Equipment Maintenance (Butler)hrs $18.58 819 $15,220
Total Place Rock Armor $484,661
Units
Quality Control
Resource Description
Quality Control Contractor
Cost/Unit Task Units Task Cost
I_hr_s ..;".$6_2_.0_01__----'-1,_20_0,-1__$,-7..,..:.4,_40.-...0I
Total Quality Control $74,400
TOTAL RECLAMATION OF CELL 3 $1,913,3451
10/512009 -2:12 PM -Copy of WMM Rec Plan Est Sept 2009 (2 ).xls
Denison Mines (USA)Corp.
While Mesa Mill
Volume Calculation -Cell 3
!Updated 02/26/09
1)Area of Cell 3 -3,234,252 sq It 74.25 acres
2)Area of Cell 3 still open as of February 21 ,2008 (see Figure A)
900 It X 1725 It =1,552,500
3)Assumptions
Use 1,552,500 sq It
35.6 acres
-Bridging layer is placed using random fill from piles east and west of Cell 3
-Cell will be graded to Design elevation utilizing finer materials in random fill stockpiles
and from "clay"stockpiles.
-Clay will be mined,blended,and hauled from borrow site location in Section 16-
four miles south of the mill area,using belly dump trucks,clay layer on top of Cell only.
-The upper 1 foot of random fill will be placed utilizing the fine random fill and clay stockpiles
-Rock for side armor,top armor and toe aprons will come from an off-site gravel source
one (1)mile north of Blanding.Rock will be produced through screening,stockpiled and
trucked to the site at the time of use.Belly dump trucks will dump gravel in windrows
on the top and sides of the Cell.
4)Bridging Layer (Platform Fill)Remaining to be placed
1,552,500 sq It X 3 ft./27 cubic feet per cubic yard =172,500 cubic yards
Use I 172,500 cubic yards
5)Bring Platform Fill up to Design elevation (Lower Random)
Assume full area of Cell X one (1)foot thick
3,234,252 sq It X 1 ft./27 cubic feet per cubic yard =119,787 cubic yards
Use I 120,000 cubic yards
6)Placement of Clay Layer (One (1)foot thick on top of Cell only)
Assume full area of Cell X one (1)foot thick
3,234,252 sq It X 1 ft./27 cubic feet per cubic yard =119,787 cubic yards
Use I 120,000 cubic yards
Volume Calculation -Cell 3 (can't)page 2
7)Upper Random Fill Volume -Top of Cell area
Assume full area of Cell X one (2)foot thick
3,234,252 sq It X 2 ft./27 cubic feet per cubic yard =
8)Armor Protection -Top of Cell
Assume full area of Cell X one-half (0.5)foot thick
239,574 cubic yards
Use I 240,000 cubic yards
3,234,252 sq It X 0.5 ft./27 cubic feet per cubic yard =59,894 cubic yards
Use I 60,000 cubic yards
9)Cell 3 North Slope (Slope #6)common with Cell 2
Average height
Length
2 feet
1100 feet
No clay on slopes.Toe apron only at base of
long slope or where drainage is directed.
a)Random fill to reduce slope from 3:1 to 5:1
First Wedge [2 X 2 X 5)/2]X 1100
11,000 cubic feet!27 =
Remaining Random Fill
[5 X 5 X 5)/2 -(2 X 2 X 5)/2]X 1100
57,750 cubic feet!27 =
Total Random Fill North Slope
407 cubic yards
Use 1...__4_1_0_c_u_b_ic...y...a_rd_s--,
2,139 cubic yards
Use 1..._.;;;.2:.;;;.2.;;;.00.;;....c;.;u;,;;b.;,;ic;.;y:.;;a;;.rd;.;s;.....l
2,610 cubic yards
b)Rock Armor 8"thick -0.67 feet
[5.67 X 5.67 X 5)/2 -(5 X 5 X 5)/2]X 1100
19,659 cubic feet!27 =728 cubic yards
Use 1:..-__73_0_C_u_bi_c.:.ya_r_ds_
c)Toe Apron No rock required
Total Rock Armor Cell 3 north Slope 730 cubic yards I
Volume Calculation -Cell 3 (can't)page 3
10)Cell 3 South Dike,west end (Slope #7 )
Average height
Length
16 feet
1750 feet
a)Random fill to reduce slope from 3:1 to 5:1
First Wedge [16 X 16 X 5)/2 -(16 X 16 X 3)/2J X 1750
448,000 cubic feet!27 =
Remaining Random Fill
[19 X 19 X 5)/2 -(16 X 16 X 5)/2]X 1750
459,375 cubic feet!27 =
Total Random Fill North Slope
16,593 cubic yards
Use I 16,600 cubic yards
17,014 cubic yards
Use I 17,100 cubic yards
33,700 cubic yards
b)Rock Armor 8"thick -0.67 feet
[19.67 X 19.67 X 5)/2 -(19 X 19 X 5)/2]X 1750
113,351 cubic feet!27 =4,198 cubic yards
Use 11--_4...:,_20_0.....;c_u_bi_c,,-ya_r_ds_
c)Rock Apron at toe of slope
Total Rock Armor Slope #7
[2ft X 7ft wide X 1750 long]/27 =907
Use 1.....;.....1,_00_0_c_u_bi_c,,-ya_r_ds_
5,200 cubic yards I
11)Cell 3 South Dike (Slope #8)VOLUME DELETED.AREA FILLED WITH CELL 4A TAILINGS
Average height °feet
Length °feet
a)Random fill to reduce slope from 3:1 to 5:1
First Wedge
cubic yards
Use I cubic yards
Volume Calculation -Cell 3 (can't)page 4
Remaining Random Fill
cubic yards
Use I .....;;c;,;;u;;;,;bi,.;.c,,-ya;;,;r,;;;,ds;;.....
Total Random Fill North Slope cubic yards I
b)Rock Armor 8"thick -0.67 feet
cubic yards
Use I cubic yards
c)Rock Apron at toe of slope
Total Rock Armor Cell 3 South Dike
12)Cell 3 East Slope (Slope #9 )
Use I'--__....;;c~u;;;bi.;;.c"",ya;;;;.r.;;;.ds;;....
cubic yards I
Average height
Length
a)Random Fill No existing Dike
Total Random Slope #4
4 feet
800 feet
[(4 X 4 X 5)/2]X 800/27 =1185 cubic yards
Use 1............1,..20_0_c_u_bi_c...ya_r_ds_
1,200 cubic yards I
b)Rock Armor 8"thick·0.67 feet 14.52 cubic feet per linear foot of dike
14.52 cubic foot per linear foot X 800 /27
c)Toe Apron Not required
Total Rock Armor Cell 3 East Slope
430 cubic feet!27 =430 cubic yards
Use 1__.;.45;;.;0....;;C.;;;.Ub.;;.ic~ya;;;.r.;;.ds~
450 cubic yards I
Volume Summary -Cell 3
Top of Cell
West (Slope #6 )
South (Slope #7 )
South (Slope #8 )
East (Slope #9 )
Totals
Lower Upper Rock
Bridging Layer Random Clay Random Armor
172,500 120,000 120,000 240,000 60,000
410 2,200 730
16,600 17,100 5,200
...
1,200 450
172,500 137,010 120,000 260,500 66,380
Cell 3 Reclamation
Cat637Resource Requirements
Volume Route Yds/hr 0/0 Equip.Hr.
Cell 3 Bridging Lift
Tailings Surface 172,500 6 277 100%622.7
Cell 3 Lower Random Fill
Tailings Surface 120,000 5 296 100%405.4
Slope 6 410 5 296 100%1.4
Slope 7 16,600 4 368 100%45.1
Slope 8 -5 296 100%0.0
Slope 9 -4 296 100%0.0
Total 451.9
Cell 3 Lower Random Fill
Tailings Surface 240,000 4 296 100%810.8
Slope 6 2,200 4 296 100%7.4
Slope 7 17,100 5 368 100%46.5
Slope 8 -4 296 100%0.0
Slope 9 1,200 5 368 100%3.3
Total 868.0
Cell 3 Rock Armor --use Highway Trucks
Clay Volume =
Clay Production Cell 3
(use same assumptions as Cell 2 )
120,000 Bank Cubic Yards (BCY)
0.8 Swell Factor
150,000 Loose Cubic Yards (LCY)
Trucking 475 LCY/hr
150,000 LCY I 475 LCY/hr =
use
8 trucks plus one (1)Loader
316 hours
320 hours
980 Loader
D8N wI ripper
Cat 651 WW
Cat 825 Compo
14G Patrol
5000 gal WW
320 X 8 Trucks =2560 hours
Hours
320
320
320
350
350
175
Rock Armor Production Cell 3
66,380 cubic yards (cy)
38 cy per hour times 8 trucks
304 cy per hour delivered
Assume 25%extra time for spreading,loading and screen wait
304 11.25 243.2 cy per hour 273 Hours
Cell4A
RECLAMATION OF CELL 4A -Total
Dewatering of Cell 4A
Resource Description
Dewatering of Cell 4A
Total Dewatering of Cell 4A
Units Cost/Unit Task Units Task Cost
Ihrs I $0.481 62,4001 $30,000I
$30,000
Place Bridging (Platform)Lift
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $206.83 689 $142,547
Cat 637 Scraper Operators hrs $17.72 689 $12,210
Cat 825 Compactor hrs $95.38 172 $16,433
Cat 825 Compactor Operator hrs $13.09 172 $2,255
Cat D8N Dozer With Ripper hrs $95.08 172 $16,383
Cat D8N Dozer Operator hrs $13.09 172 $2,255
Cat D7 Dozer hrs $80.39 172 $13,852
Cat 07 Dozer Operator hrs $13.09 172 $2,255
Cat 651 Waterwagon hrs $110.06 172 $18,964
Cat 651 Waterwagon Operator hrs $16.67 172 $2,873
Cat 14G Motorgrader hrs $70.19 172 $12,093
Cat 14G Motorgrader Operator hrs $18.91 172 $3,258
Equipment Maintenance (Butler)hrs $18.58 2,929 $54,432
Total Place Bridging (Platform)Lift
Place Lower Random Fill
Resource Description Units
$299,811
Cost/Unit Task Units Task Cost
Equipment Operators hrs $18.94 1,122 $21,248
Cat 637 Scraper hrs $206.83 499 $103,134
Cat 825 Compactor hrs $95.38 125 $11,890
Cat D8N Dozer With Ripper hrs $95.08 125 $11,853
Cat D7 Dozer hrs $80.39 125 $10,022
Cat 651 Waterwagon hrs $110.06 125 $13,720
Cat 14G Motorgrader hrs $70.19 125 $8,750
Equipment Maintenance (Butler)hrs $18.58 1,122 $20,849
Total Place Lower Random Fill $201,466
Clay Layer
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators hrs $18.94 1,020 $19,318
Cat 637 Scraper hrs $206.83 0 $0
Cat 825 Compactor hrs $95.38 180 $17,168
Cat D8N Dozer With Ripper hrs $95.08 180 $17,115
Cat D7 Dozer hrs $80.39 0 $0
Cat 651 Waterwagon hrs $110.06 180 $19,812
Cat 14G Motorgrader hrs $70.19 180 812,634
Cat 980 Loader hrs $103.73 150 $15,560
5000 Gallon Water Truck hrs $63.90 150 $9,586
Highway Trucks hrs $38.33 1,600 $61,322
Truck Drivers hrs $16.67 1,600 $26,678
Equipment Maintenance (Butler)hrs $18.58 2,620 $48,689
Total Place Clay Layer
Upper Random Fill
Resource Description Units
$247,881
Cost/Unit Task Units Task Cost
Equipment Operators hrs $18.94 1,360 $25,748
Cat 637 Scraper hrs $206.83 544 $112,477
Cat 825 Compactor hrs $95.38 136 $12,967
Cat D8N Dozer With Ripper hrs $95.08 136 $12,927
Cat 07 Dozer hrs $80.39 136 $10,930
Cat 651 Waterwagon hrs $110.06 136 $14,964
Cat 14G Motorgrader hrs $70.19 136 $9,542
5000 Gallon Water Truck hrs $63.90 136 $8,688
Equipment Maintenance (Butler)hrs $18.58 1,360 $25,265
Total Place Upper Random Fill
Rock Armor
Resource Description Units
$233,507
Cost/Unit Task Units Task Cost
Equipment Operators hrs $18.94 597 $11,307
Cat 07 Dozer hrs $80.39 199 $15,998
Cat 651 Waterwagon hrs $110.06 199 $21,903
Cat 14G Motorgrader hrs $70.19 199 $13,968
Rock Cost Delivered CY $5.77 48,450 $279,382
Equipment Maintenance (Butler)hrs $18.58 597 $11,094
Total Place Rock Armor $353,652
Quality Control
Resource Description Units Cost/Unit Task Units Task Cost"'::'Q-u~al-itY-C~o""n""tr""ol~C";'o""nt""ra';"c""to""r~---"'lh:-r-s'-:"":'":":'::""_J $62.001 1,0451 $64,790 1
Total Quality Control
TOTAL RECLAMATION OF CELL 4A
$64,790
$1,431,106~
Volume Calculation -Cell 4 IUpdated 02/27/09
1)Area of Cell4A -
2)Assumptions
1,829,520 sq ft =42.00 acres
/
-Bridging layer is placed using random fill from piles east of Cell 4A
-Cell will be graded to Design elevation utilizing finer materials in random fill stockpiles
and from "clay"stockpiles.
-Clay will be mined,blended,and hauled from borrow site location in Section 16 -
four miles south of the mill area,using belly dump trucks,clay layer on top of Cell only.
-The upper 1 foot of random fill will be placed utilizing the fine random fill and clay stockpiles
-Rock for side armor,top armor and toe aprons will come from an off-site gravel source
one (1)mile north of Blanding.Rock will be produced through screening,stockpiled and
trucked to the site at the time of use.Belly dump trucks will dump gravel in windrows
on the top and sides of the Cell.
3)Bridging Layer (Platform Fill)Remaining to be placed
1,829,520 sq ft X 3 ft./27 cubic feet per cubic yard =203,280 cubic yards
Use I 204,000 cubic yards
4)Bring Platform Fill up to Design elevation (Lower Random)
Assume full area of Cell X one (1)foot thick
1,829,520 sq ft X 1 ft./27 cubic feet per cubic yard =67,760 cubic yards
Use I 68,000 cubic yards
5)Placement of Clay Layer (One (1)foot thick on top of Cell only)
Assume full area of Cell X one (1)foot thick
1,829,520 sq ft X 1 ft./27 cubic feet per cubic yard =67,760 cubic yards
Use I 68,000 cubic yards
Volume Calculation -Cell 4A (can't)page 2
6)Upper Random Fill Volume -Top of Cell area
Assume full area of Cell X one (2)foot thick
1,829,520 sq ft X 2 ft./27 cubic feet per cubic yard =
7)Armor Protection -Top of Cell
Assume full area of Cell X one-half (0.5)foot thick
135,520 cubic yards
Use I 136,000 cubic yards
1,829,520 sq ft X 0.5 ft./27 cubic feet per cubic yard =33,880 cubic yards
Use I 34,000 cubic yards
8)Cell 4A South Dike,(Slope #1 )
Average height
Length
36 feet
1600 feet
a)Random fill to reduce slope from 3:1 to 5:1
First Wedge [36 X 36 X 5)/2 -(36 X 36 X 3)/2]X 1600
=2,073,600 cubic feet!27 =
Remaining Random Fill
[39 X 39 X 5)/2 -(36 X 36 X 5)/2]X 1600
=900,000 cubic feet!27 =
Total Random Fill South Slope
76,800 cubic yards
Use I 77,000 cubic yards
33,333 cubic yards
Use I 34,000 cubic yards
111,000 cubic yards
b)Rock Armor 8"thick -0.67 feet
[39.67 X 39.67 X 5)/2 -(39 X 39 X 5)/2]X 1600
210,836 cubic feet!27 =7,809 cubic yards
Use 1__7;";;,8",;,0,;"0_c,;.,u..;b...ic;.,;y;";;a,;,,,rd,;.,s;,,,,.,.j
c)Rock Apron at toe of slope
Total Rock Armor South Slope
[2ft X 7ft wide X 1600 long]/27 =830
Use 1L.._.....;;8;,;;;5,;;,0...;;;.cu;;.;b;.;.ic;;.y;:.;a;;.;r,;"ds~
8,650 cubic yards I
Volume Calculation -Cell4A (con't)page 3
9)Cell4A West Dike (Slope #2)
Average height
Length
26 feet
1200 feet
a)Random fill to reduce slope from 3:1 to 5:1
First Wedge [26 X 26 X 5)/2 -(26 X 26 X 3)/2]X 1200
=811,200 cubic feet!27 =
Remaining Random Fill
[29 X 29 X 5)/2 -(26 X 26 X 5)/2]X 1200
495,000 cubic feet!27 =
Total Random Fill North Slope
30,044 cubic yards
Use J 30,000 cubic yards
18,333 cubic yards
Use I 19,000 cubic yards
49,000 cubic yards
b)Rock Armor 8"thick -0.67 feet
[29.67 X 29.67 X 5)/2 -(29 X 29 X 5)/2]X 1200
117,927 cubic feet!27 =4,368 cubic yards
Use 1__4,;,,;,5..;.0..;.0.-;.cu_b_ic_y~a;;.,r.;.ds__
c)Rock Apron at toe of slope [2ft X 7ft wide X 1200 long]/27 =622
Use 1__..;;6.;;,5.;;.0_C.;;,;U_b;.;.ic;..y~a;;;,r.;.ds__
Total Rock Armor Cell 4A South Dike
10)Cell 4A East Slope (Slope #3 )
5,150 cubic yards I
Average height
Length
8 feet
1200 feet
a)Random fill to reduce slope from 3:1 to 5:1
First Wedge [8 X 8 X 5)/2 -(8 X 8 X 3)/2]X 1200
76,800 cubic feet!27 =1185 cubic yards
Use 11..__1.;.""2..;.0..;.0.-;.cu_b_ic~ya_r..;.ds,;,.".,,i
Volume Calculation -Cell 4A (can't)page 4
Remaining Random Fill
[11 X 11 X 5)/2 -(8 X 8 X 5)/2]X 1200
=171,000 cubic feeV 27 =
Total Random Slope #3
6,333 cubic yards
Use 1_....;;,6,:.;;5.;.00.;;;...c;;.;u;;;;b,;,;ic;.",Y:.;;a,;,;,rd;;;;s;;...."j
7,700 cubic yards
b)Rock Armor 8"thick -0.67 feet 14.52 cubic feet per linear foot of dike
14.52 cubic foot per linear foot X 1200/27
c)Toe Apron Not required
=645 cubic feeV 27 =645 cubic yards
Use 1 6_50_c_u_b_ic...y:",a_rd_s......l
Total Rock Armor Cell 4A East Slope
Volume Summary -Cell 4A
650 cubic yards I
Top of Cell
South (Slope #1 )
West (Slope #2 )
East (Slope #3 )
Totals
Lower Upper Rock
Bridqinq Layer Random Clay Random Armor
204,000 68,000 68,000 136,000 34,000
77,000 34,000 8,650
30,000 19,000 5,150
1,200 6,500 650
204,000 176,200 68,000 195,500 48,450
Cell 4A Reclamation
Cat 637Resource Requirements
Volume Calculation -Cell 4A (con't)page 5
Volume Route Yds/hr 0/0 Equip.Hr.
Cell 4A Bridging Lift
Tailings Surface 204,000 4 296 100%689.2
Cell 4A Lower Random Fill
Tailings Surface 68,000 5 368 100%184.8
Slope 1 77,000 5 368 100%209.2
Slope 2 30,000 4 296 100%101.4
Slope 3 1,200 5 368 100%3.3
Total 498.6
Cell 4A Upper Random Fill
Tailings Surface 136,000 5 368 100%369.6
Slope 1 34,000 5 368 100%92.4
Slope 2 19,000 4 296 100%64.2
Slope 3 6,500 5 368 100%17.7
Total 543.8
Cell 3 Rock Armor --use Highway Trucks
Clay Volume =
=
Clay Production Cell 4A
(use same assumptions as Cell 2 )
68,000 Bank Cubic Yards (BCY)
0.8 Swell Factor
85,000 Loose Cubic Yards (LCY)
Trucking 475 LCY/hr
150,000 LCY I 475 LCY/hr =
use
8 trucks plus one (1)Loader
179 hours
320 hours
980 Loader
D8N wi ripper
Cat 651 WW
Cat 825 Compo
14G Patrol
5000 gal WW
320 X 8 Trucks =2560 hours
Hours
320
320
320
350
350
175
Rock Armor Production Cell 4A
48,450 cubic yards (cy)
38 cy per hour times 8 trucks
304 cy per hour delivered
Assume 25%extra time for spreading,loading and screen wait
304 11.25 243.2 cy per hour 199 Hours
Miscellaneous
MISCELLANEOUS ITEMS
MISCELLANEOUS ITEMS
Equipment Mobilization
Resource Description Units Cost/Unit Task Units Task Cost
Butler Machinery Mobilization LS $334,2401 1 $334,240
Other Equipment Mobilization LS $2,2751 1 $2,275
Cranes LS $2,700 2 $5,400
Total Equipment Mobilization
Office Facilities
Resource Description Units Cost/Unit Task Units
$341,915
Task Cost
Install New Powerline LS $15,000 1 $15,000
Utilities for Offices months $1,000 36 $36,000
Temporary Office Trailer months $1,500 3 $4,500
Temporary Office Trailer,mob,demob &setup LS $3,000 1 $3,000
LS $180,000
Facilities constructed in 2000 &2008
Total Office Facilities
Decontamination Pad
Resource Description
Laborers
Construct Wheel Wash Facility
Total Wheel Wash Facility
Units Cost/Unit
hrs $13
Task Units
8,320
$58,500
Task Cost
$104,046
$180,000
($180,000)
$104,046
MANAGEMENTISUPPORT
Resource Description Units Cost/Unit Task Units Task Cost
Manager/Engineer hrs $56.66 6,240 $353,568
Radiation Safety Officer hrs $44.27 6,240 $276,254
Secretary hrs $17.91 6,240 $111,727
Clerk hrs $14.73 4,866 $71,686
$24.93
.
$121,315EnvironmentalTechnician(Part time,4.5 years)hrs 4,866
Maintenance Foreman hrs $32.49 6,240 $202,712
Chemist hrs $26.06 2,080 $54,214
Security hrs $9.59 18,720 $179,612
Safety Engineer hrs $24.93 4,160 $103,713
Misc.Materials &Supplies hrs $36.45 6,240 $227,448--$64.81 $134,800HealthPhysicsCostshrs2,080
Environmental Monitoring Costs,Laboratory years $71,620.00 4.5 $322,290
To~IManagemenUSupport
TOTAL MISCELLANEOUS ITEMS
1Ol51200g •2:12 PM •Copyof WMM Ree Plan Est Sept 200g (2).xl$
$2,159,340
$2,663,800,
Denison Mines (USA)Corp.
White Mesa Mill
Rock Production
ROCK PRODUCTION COST
Assumptions:
Rock is obtained from gravel source north of Blanding,Utah.BLM Public Pit
Rock is processed by screening only,no crushing is required,1.25 CY offeed for 1 CY of product
Rock is produced and stockpiled at the site
Site is 7 road miles from the mill;6 miles of which is paved public highway
Rock will be hauled in 22 CY bellydump trucks,contract haulers ($80.00/hr)
Rock will be dumped in windrows on Tailings Cells by trucks,spread by grader,and spread by D7 Dozer
Trucks can average 30 MPH (1.75 rounds/hr)
Material fed to plant
PRODUCTION OF RIPRAP
Product Material Feed
Required (CY)Reject Factor to Plant (CY)
146,000 25.0%182,500
Plant
Throughput
(CY/hr)
122
Plant
Operating
Hours
1,500
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators hrs $18.43 2,340 $43,137
Laborer hrs $12.17 1,500 $18,259
Cat D8N Dozer With Ripper hrs $95.08 365 $34,706
Cat 980 Loader hrs $103.73 1,975 $204,869
Screening Plant w/conveyors*hrs $69.44 1,500 $104,159
BLM Usage Fee CY $0.60 146,000 $87,600
Contract Highway Trucks -Bellydumps**hrs $80.00 3,800 $304,000
Equipment Maintenance (Butler)hrs $18.58 2,340 $43,486
Total Production of RipRap
RIPRAP COST PER CUBIC YARD DELIVERED
$840,215
*Cost Quoted from Power Motive Corporation,Denver,Colorado updated February 24,2009
$7,000 plus $4,400 for conveyors,176 hours per month for one month,plus screen set up at $2,000.
Mob and Demob - $5,000.00
**Cost quoted from Dennis Cosby,Cosby Trucking,Inc.,Blanding,Utah,Updated February 16,2009
(includes ownership expense,fuel,maintanence and operator)
7/27/2009-11:21 AM -WMM Ree Plan Est JUly 2009 (1).xls
International Uranium (USA)Corp.
White Mesa Mill
Aml Bushman
From:
Sent:
To:
Cc:
Subject:
Attachments:
Dear Arrty,
Brad Neptune [[e-mail]]
Tuesday,February 24,20099:33 AM
Amy Bushman
Mike Norris
2512KT Screen
FNG_2512kt_2512k.pdf;FT_271 K_291 K.pdf
Thank you for the opportunity to quote a rental screen to Denison Mines.
Last year,per the February 22,2008 quote,we quoted our 271 K plant and our 2512KT plant.I'm attaching spec sheets
on each so you can see what each screen and plant looks like.
The 271 K plant does NOT have anyon-plant stackers,but does have a 4'x 10'two deck screen.You would need to rent
off plant hydraulic stackers to stack out two products.It is also a rubber tired plant.
The 2512KT is a Track Mounted plant that DOES have on-plant stackers and can stack out three products right off of the
plant.You do not need additional conveyors.
Rental rates are the same as quoted last year.
271K Screen
2512KT Screen
36"x 60'Hyd Stacker
30"X 80'Hyd Stacker
$7,000 I mo
$12,800 I mo
$1,500 I mo
$2,200 I mo
The 271 K Screen is presently tied up on a rental.The 2512KT plant is sitting idle in Colorado Springs.I'd estimate
delivery from C Spgs to Blanding to be approximately $2,500.The present purchase price we have on the 2512KT is
$135,000,thus you may want to consider purchasing the plant as opposed to renting it for $12,800 per month.
Screen cloth and installation of screen cloth will run about $2,000 total.
Please feel free to email or call with any additional questions.
Sincerely,
Brad Neptune
970-985-5875
The Fold'n Go 2512KT is amobile track
screening plant that features a Kolberg@
double deck screen for processing sand &
gravel,topsoil,slag,crushed stone and
recycled materials,This plant offers a standard
inlet hopper chute for inline processing feed
from crushing plant or feed conveyor.As with
all Fold'n Go@ mobile screening plants,this
plant provides easy to reach engine controls
and grease points for routine service,
For material producers that prefer wheels and
need more site to site mobility,the Fold 'n Go
2512K is available,80th plants provide simple-
to-use hydraulic leveling gears,hydraulic plant
controls and screen angle adjustment
F I 'n o 51 1
SCREEN:
Koiberg*2512K double deck screen:5'x12'screen lop
and boUom deck driven by 1200 RPM vibratingmechanism
mounted on screen;Variable eccentric shaH with five (5)
force amplitude settings on adjustable slip counter.'ieighls;
Rubber isolator blockS;Hydraulic controls for variable angle
operation.Top and bottom discharge chutes,aggregate
spreader,and fixed acoess ladder wilh wrap-around
walkway for easy screen access.Standardmaterial
separations range from 3"to 10M depending on
application.
POWERSYSTEM:
125HP (100 HP for 2512K)Tier II John Deere water-
cooled diesill engine to power ell plant functions and
three on-board slackingconveyors;12 voll battery.
Engine mounted pumps to operate all plant functions.
NEMA-4 rated instrument panel,tachometer,hour
meter.voltmeter,oil pressure gauge,oil temperature
gauge and emilrgency stop.AUXiliary powerfor up to
30 HP off-plant conveyors.
PLANT CAPACITY:
Scrooning plant can process up to350 TPH or more of
feed meterial.Actual tonnages will very dapending on
application requirements:feed material size,material
seperations,type of screens used.weight of product and
other material considerations.
@2006 ASlet;M:ibj~Screens-Mri£U18 reser.;ed,
SpecWcalions are subJec:llo change,
CONVEYOR SYSTEM:
2512KT:Delivery COI1veyor-28'x42"conveyor with
hydraulic diive (350 FPM):FUi!J.ength skirt boards.
Side Conveyor&--Two (2)27'x24"swing outconveyors
with hydraulic variablil speed drive (G-350 FPM);
Fines Conveyor--20'x48"conveyor with hydraulic drive
(350 FPM);All conveyors have 220 PIW,1/8 x 1116 cover
belling,bell cleaners and fold for transport.
2512K:Delivery ConvfrJOf-38'x36'conveyor with
hydraulic drive (350 FPM).Side Conveyors--Two
(2)27'x24'swingout conVilyors y"th hydraulic variable
speed drive (0-350 FPM);Fines Conveyor--23'x 42"
conveyor with hydraulic drive (350 FPM);All conveyors
have 220 PIW,1/8 x 1/16 cover belting,beltcleaners and
fold for transport
FEEDER SYSTEM:
12 cubic yard heaped capacity hopper with 6'x13'top
opening;Heavy-duty 25'sloped grizzly with Wnominal
opening;Hydraulic dump with patented scissor action for
easy cleaning;Adjustable gale;14'x42"belt
feeder with hydraulic variable speed drive (0-60 FPM);
Belling Is 330 PIW,3/16 x1/16cover.
CHASSIS:
2512KT:24'I·beam;Hydraulic landinggear lorleveling of
plant;Intar-Trae FL6 tracks with wireless remote control for
easyjobstte movement.
2512K:21"I-beemwith king pin type hitch;HydraUlic;
landing geartor leveling of plan;Tandem axleassembly
with eight (8)11 R22.5 tires and mud flaps;Leaf spring
type suspension,air brakes,rear taillights and side marker
lights.
SERVICE CAPACITY:
Fuel........140 gal
Hydraulic Tank.100 gal (150 gal for 2512K)
TRANSPORTATION:25121<T 2512K
Weighl .......61,000 100 54,600 ibs
Height.13'11"(onlowboy)13'0'
t.ength .....49'8"62'2"
Width 11'11"11'11"
Axles.....N/A Tandem
OPTIONS:
Bulkheoo--.A.ssists in rampingfor loaderfeed 10feed
hopper.
Remote Control Grizzly-Assists in dumping oversize
malerial offfood hopper from loader.
Wings-Assists in lunneling feed material onto lead hoppal'
griZZly.
Hammermill Shredder-Helps break feed material apart
for improved processing.Hydrauliccontrols c;ail retract
shredder up and away from drop zone of feed conveyor to
delivery conveyortor meterial bypass ofshredder.
Sc;reen Cloth
Phone No:
Call to:----:!L"-)~eA/~If/..LIJ::...s_C~.o:::...s..2:::~-r:-y'_
Company:_~G~·~S.....!i::':::";lfe...-....1./:......-a:u.-±:i?t;.J;.(,..Lk~c.£..;1N~'Ch-'_T v
(qg,~~)6 te-2890
Date:02 ~/(,~00;
Notes:2007 ~Ie 4'130,00/i014,c
«Ihe/~t.VerL j11a/~/erV~ce.-c;J,rls .[;;.;(
Comments:
Call to:7ij"I?1c j)tlU~
Company:ri.S.15L;rJ -14M/kelt Orr;c{;
Phone No:('t2.1)S87~lSI;'
Date:';Si.&1":1 It!2'{l(:)'1
/f
Subject:Iiklettt'"A1s Gsl,El.1d R.i.i€-/1·!-si
Notes:leJ's COMWle".)s:
-lllalellt;}l ,1 sole!()-v a ~/&,nCt~te/i/;1hte.);'9.'>/$.
CMlt/li?;v-!fltt;-e-I;'.;f(J,So 1('4.-64",k yad £emoveJ
7hllee (3)o;<f..h4A-(~)!o!eA..-..f,J $()l4~ces c~se:£1ft/I
)5;fVUNJ U"':7ClN -e/p-.r/01 dt/
lellls ])12~vJ "~IJ<>~JJ:01 I3h~.Jf
15",IdW6<a.l ..<'UNlJ Pa/tk.,.tec'o/kdf:W/1,fJ
-6-(·elc.die
t1:/tmrfl,'0 '1'4)/;vJJ a.v!es.$llJew r:1I~eC4.'Y6'NJ
Comments:
tA:>G #C.(pO le~/3C;r /;..,t?J Itmet-Ie ..j;~rna leaJ corl
~Aj4ilvl'"'~CfeU/&4NC€uf /Jeep>/"I'fs "'te5.
Equipment Costs
EQUlPMENT COSTS
WHITE MESA MillRECLAMATION COST
HOURLY EQUIPMENT COSTS 2009 DOLLARS
Act'Jal equipment rates quoted from Nonr.Centrai Rental &Leasing.LLC,12 month rental period
February2.2009
637E Scraper
D8R Dozer
D7R Dozer
E25G CompaclOr
980G loader
988Gloacer
770Haul TrLic}~
365BLExcav()to~
651 W~ter Wagon
5000 galWaterTruck
14HIRipper Motor Grader
16HiRipper Motor Grader
Units
4
1
1
RATE ""Tel;.FUEL I FU:LG1!I Tiro:;;mdGe.1'TOTAL i Mob/Demeb I Mob/Demob ODeralinc Hrs I
MONTHLY HOURL.Y l;i.XPl;i.."lDABt..ES USAGE $;:,'07 co~r 1per machine!Tolals I perMonl~,I
25.400 1~i4.32 8.00 23.5 49.51 5.00 $206.83 .21.200 S34.300 704
12.650 71.83 4.30 8.5 17.91 1.00 $95.08 514.100 514.100 176
10.700 60.80 3.85 7.0 14.75 1.00 580.39 512.450 512.450 176
11.200 63.64 3.85 13.0 27.39 0.50 S9535 S13.000 513,000 176
13.300 75.57 4.20 9.0 18.96 5.00 $103.73 S12.800 512.300 176
17.500 99A3 5A5 11.0 23.18 5.00 $133.06 $151150 515.450 176
i1.500 65.34 6.20 8.5 17.91 4.00 $93.45 513,250 553.000 70"
16.500 93.75 6.40 13.0 27.39 1.00 $128.54 524.000 824.000 176
11.800 67.05 5.20 1?0 35.02 2.00 $110.06 $14.300 514.300 176
6.650 37.78 3.05 10.0 21.07 2.00 $63.90 56.450 $6.450 176
B.800 50.00 3.80 5.5 11.59 5.00 S70.19 $10.150 SlO,150 176
12.650 71.83 4.35 8.5 17.91 5.00 S99.13 $12.100 S12.100 176
$272.6001 3.168
Replacement Cost
$1.9'10.000
$650.000
5 550.000
S 250,000
S 300.000
5 345.000
8 2.000.000
S 425.000
S 250.000
S 175.000
5 265.000
S 550.000
Equipment Rental Ralc Quotec by Wor:dWide Rental Services (06125/2009)for Cat 330 Excavatorwith Demo·Pro900 Shear
Cat 330 wI Shear
Small tools allocation·Demolition -
Sl.35fmeCl1anlclaborhoul'for
oxygen/acetylene.expen::Jables
22,500.00 127'.84 17.99 12.5 26.34 5172.171
MobJDemob i
$2.275 450.000
Butler Equipment Maintenance Cost
Monthly
M3~ntenance
Flat Rate
$62.315.00
BUtler
Maintained
Equipment
Planned
Operating
Hours/month
3.394
PJ.2nned
Operating
hours/month
(oHler
equipment
570
Total
Oper3!ing
hours per
month
3.964
Fuel Usage
per day,gal,
20
FuelCost per
month,21
days
885
M<3lntcnancc-
COSIPer
Operating
Hour r...~oblOemoO
I $,8.58 $61.640
Crane Remal Rates
65 Ion Hydraulic Crane
30 ton Hydraulic Crane
Power Motive -Screen deck and conveyors
RATE MTce FUel FuEL tIP ·_·-·-~--·-'·i···~~·~~~~~~···-·MONTHLY HOURLY EXPENDABl~S USAGE I SZ.107 I
11.100 63.07 2.15 15.0 31.61 S96.82
6,400 36.36 2.15 10.0 21.07 S59.58
Rental Rates upooled from HannenEqu:pment.02125109
250.000
175.000
250.000
8.825.000
$88.250
!.rJtC'-Z;.:lt."n;J)ur-3:'l~rn (USA)CC~~
l"V~.te~,\<:::;~M,II
Harold Roberts
From:
Sent:
To:
Subject:
SWENSON,OSCAR [[e-mail]]
Tuesday,September 01,20099:40 AM
Harold Roberts
RE:Denison Quote
Harold:
You are correct in regard to total freight charges.
Oscar
from:Harold Roberts [mailto:[e-mail]]
Sent:Monday,August 31,20095:43 PM
To:SWENSON,OSCAR
SUbject:RE:Denison Quote
Oscar:
I have aquick question for you.On Attachrnent A to your February 5,2009 equipment quote,the freight charges are
listed as "Total Freight Charges To and From",with a notE~that the cost "includes assembly and disassembly".I have
assumed that this was the total cost to ship the equipment to Blanding,assemble the equipment as necessary,
dissemble the equipment as necessary at the end of the lease period and ship the equipment back to North Central's
facilities.Is my understanding correct?
Hegards,
Harold Roberts
t (303)389·4160 I f:(303)389A125
1050 lllh Street,Suite 950,Denver,CO 80265
DENISON MINES (USA)CORP
\'::tNY.~(IQDiiiPnrnjnfl';Lc;91n
ThiS e'rnailis intended for exclusive use the persor,(s}mentioncej as the rCclp!ent(s).This mossage and anyattached Hies '/11th it are confidential and may contain pnvlleged
or proprielaryinform<:ltion.If you are not thH intended recipient(s}please delete this rl1(;)$sago 8nd notify the sender.You may not use,distribute print Of copythis rnessane if
you alO not the intended recipient(s).
From:SWENSON,OSCAR [mailto:OSCAR~[e-mail]]
Sent:Thursday,February 05,2009 8:18 AM
To:Harold Roberts
SUbject:Denison Quote
f-!arold,
Enclosed is the updated quote for Blandin!].
Call vvith any questions.
Thank you
Oscar
«Denison Mines Blanding Ut 02-02-09,doc»«Denison Mines Blanding Ut AU A 02-02-09.xls»
RENTAL &LEASING LLC
A SubsidiaryofBuller Machinery Co.
3401 33rd Street Southwest
Po Box 9559
Fargo,ND 58106-9559
Phone [phone]
Fax [phone]
February 2,2009
Denison Mines
Attn:Harold Roberts
E-Mailedto:[e-mail]
Dear Harold:
Thank you for the invitation to quote Denison Mines (Denison)the equipment needed for
their mining project in Blanding,Utah.North Central Rental &Leasing,(NCRL)
respectfully submits our proposal for a maintained fleet of Caterpillar machines.
Listed on Attachment A,you will find the models,quantities,monthly rental rates,hours
allowed per month,excess hour charge,guaranteed number of months rates are based
upon,total freight charges and the maintenance rate per hour for materials only.
All rates shown on Attachment A do not include any state,local,property or any other
taxes that may be applicable.
Rates are based upon electric hour meter readings that are attached to the dash of each
machine.Rates are based on 176 hours of use each month.Excess hour charges,ifany,
will be calculated and invoiced at the end of the project.There would be no credit issued
for any hours under the allowed during the term of this proposal.IfDenison elects to
double shift machines,then NCRL would invoice those hours at the end ofeach month.(To
figure the double shift rates,take the excess hour rate shown on Attachment A times the
number of hours).
Rates are based upon a minimum guarantee of 12 months and a package deal.This quote
is valid for 90 days.
Maintenance and Repairs:
Maintenance:The maintenance rates per hour listed on Attachment A includes the
material part items only,such as air,oil,and fuel filters,lubricant oils,grease,anti-freeze,
batteries,fan belts,lights and make-up oils.NCRL would invoice Denison actual hours
used on machines at the end of each month.Our monthly maintenance charge would be
$62,315 which includes our labor,specialized lube trucks,support vehicles and equipment,
specialized tooling,scheduled oil sampling,parts trailers and inventories,mileage and
travel expense.
February 2,2009
Denison Mines
Page 2
Maintenance (cont.):NCRL will provide two (2)full-time maintenance technicians on site
fifty (50)hours per week on a schedule to be determined,Monday through Friday.
Denison would have to schedule the machines available for a time frame yet to be
determined adequate for NCRL maintenance personnel to perform the required
maintenance.NCRL would invoice Denison for the monthly maintenance charge at the
end ofeach month.
Repairs:NCRL would be responsible for all repairs including parts and labor on our machines
other than failures caused by damages or mis-use.Repairs include items as minor as starters,
alternators,water pumps, hydraulic hoses,etc.to the major items such as engines,transmissions,
differentials,brakes,hydraulic pumps and cylinders,etc.Iftime permits and Denison requests
NCRL's technician to perform repairs or maintenance on their machines,our hourly charge
would be $95.00 per hour for standard time,$122.00 per hour for overtime and $140.00 per hour
for Sundays and holidays plus materials.
Mobilization,Freight and Assembly Charges:
Mobilization:The mobilization charge of $30,820 includes the moving expense of our support
personnel,set up the job site,and transportation costs of our vehicles,parts and tooling
inventory to the job site.NCRL would charge the same amount to demobilize at the end of the
project.
Freight and Assembly Charges:The freight and assembly charges listed on Attachment A are
based upon all machines shipped by truck to the job site.
Denison would be responsible for demobilization including disassembly and return freight on all
machines.Parts,vehicles and equipment,at the end,or at time during the rental period to Rapid
City,SD
NCRL would be responsible for freight to the job site for all stock order parts shipments,
emergency repair parts,maintenance parts,and G.E.T.and bulk oil shipments.
Once the equipment has been delivered and assembled,an inspection would take place.During
the inspection,a representative of NCRL and a representative ofDenison will verify on the
Acceptance Report the condition of the equipment.
Denison's Responsibilities Include:
Operators:Provide the operators as needed to operate machines as stated in Caterpillar's
operating guide.NCRL will provide,at no expense to Denison,qualified training instructors for
the purposes of training operators.This training would take place on the jobsite at the initial
start up of the job and would include classroom,walk around,and in iron demonstrations.
February 2,2009
Denison Mines
Page 3
Fuel:Supply and fill all fuel for equipment including NCRL's service vehicles.
Damages:This includes glass breakage,bent handrails,stepladders,fenders,etc.NCRL's
normal policy for repairing damages to rental machines is to repair them when the rental period
is completed,however,if the damaged item is of a safety concern,we would repair the damages
as soon as possible after they occurred.An itemized list of the parts and labor required would be
provided to Denison prior to starting the repair,and invoiced at current list prices plus freight
upon completion.
Undercarriage and Tires:Denison would be responsible for all tire wear including tire
damages on the machines with an asterisk listed on Attachment A.Equipment would have
to be returned with same brand and model tires as when delivered,or prorated accordingly
by percentage of tire wear and condition at termination of rental period.
Upon delivery of machines,a representative of NCRLIBMC,a representative of Denison
and a representative from an independent tire dealer or manufacturer would jointly verify
in writing the condition,percentage of wear,and tire value.Upon termination of rental,we
would again have the representatives mentioned above determine the condition,percentage
of wear,and tire values.Any differences noted,would then be charged or credited to
Denison including both materials and labor.
Undercarriage wear on all track type machines would be NCRL's expense.
Ground Engaging Tools:Denison would be responsible for all parts relating to ground
engaging tools (G.E.T.),i.e.cutting edges,ripper tips and protectors,bucket tips and
adapters,edges between adapters,wear plates on bottom of buckets and all mounting
hardware.NCRL would install these items on an as needed basis at the current Caterpillar
list price plus freight at no additional labor costs.All machines would be delivered with
new G.E.T.items and are to be returned with new.
We wish to thank Denison and you for giving us the opportunity to present our proposal
and for all the consideration we receive.
Sincerely yours,
North Central Rental &Leasing
Butler Machinery Company
Oscar '1).Swenson
Rental Fleet Marketing Manager
ODS:Imc
Attachment
cc:Joel Nikle,Rental Fleet Manager
Joyce Wittkopp,Asst.Rental Fleet Manager
------ --------- --Attachment A
Denison Mine
Equipment Package Quote:Blanding,Utah
February 2,2009
I I--;
MINIMUM
GUARANTEED TOTAL**-
MONTHLY HOURS EXCESS NUMBER OF FREIGHT MAINTENANCE
RENTAL ALLOWED HOUR MONTHS RATE CHARGES RATE
MODEL QTY RATE PER MONTH CHARGE BASED UPON TO &FROM PER HOUR
*637G 4 $25,400 EA.176 EA.$73 EA.12 EA.$21,200 EA.$8.00 EA.
--~--
D9Rrr RIPPER 1 15,450 176 44 12 15,550 4.85
ID8RrrRIPPER112,650 176 36 12 14,100 4.30
I I
I --D7R/RIPPER 1 10,700 176 31 12 12,450 3.85
825H 1 11,200 176 32 12 13,000 3.85
980H 1 11,300 176 32 12 12,800 4.20
*988H 1 17,500 176 50 12 15,450 5.45
--I
*770 4 11,500 EA.176 EA.33 EA.12 EA.13,250 EA.6.20 EA.-
----365B II 1 16,500 176 47 12 I 24,000 6.40
10,000 GAL.Water Wagon 1 11,800 176 34 12 14,300 5.20
.._._----I--
5,000 GAL.Water Wagon 1 6,650 176 19 12 6,450 3.05
14H/M RIPPER 1 8,800 176 25 12 10,150 3.60
16H/M RIPPER 1 12,650 176 36 12 _____1_2,100 4.35---
--f------
*PLUS TIRE WEAR
**INCLUDES ASSEMBLY AND DISASSEMBLY I
The charge for two service technician's working fifty (50)hours per week,maintenance and lube trucks,parts and
service trailers,and overhead would be $62,315 per month to be invoiced at the end of each month.
Maintenan~e rates per hour would be invoiced at the end .of each month based upon actual hours.
Delivery and receiving mobilization charge is $30,820 each way.
Harold Roberts
From:
Sent:
To:
Subject:
Harold,
Mark [[e-mail]]
Thursday,July 09,2009 3:05 PM
Harold Roberts
Costs
Confirming our earlier conversation,our experience has shown that a conservative number for replacement of cutting
edges and bucket teeth is $1.00 per operated hour.The costs may be slightly less for equipment such as compactors,
verses the heavier usage for scrapers,dozers,loaders and blades.Tire wear and replacement is conservatively
estimated at $4.00 per operating hour for rubber tired equipment,based on current costs for replacement tires.Costs
may be slightly less for equipment such as water wagons and blades,and these cost should cover tire damage as well.
These numbers cover 12 years of operations,on over 20 projects,large and small.For the past 12 years,these projects
utilized equipment from North Central Rental and Leasing (Butler Machinery),involving 100s of Thousands of operating
hours.
Please call if you need additional information of have questions.
Mark Kerr
1
KGL Associates INC Page 1 of 1
KGL Associates INC
KGL is an
experienced
earthmover and
hazardous waste
contractor
KGL provides a
seasoned staff
for industrial,
environmental
and contract
mining services
KGL places
Health and
Safety
above all other
business
considerations
KGL is an earthmoving and environmental
construction contractor with extensive expertise in
both hazardouswaste and mining operations.With
ten years of operational project history and over 100
years ofcombined project management
experience,we are prepared to handle any
earthmoving or industrial project,from straight
forward dig and haul or overburden removal to
complex hazardous waste transport Examples of
these projects include
Remediation
Reclamation
ContractMining
Landfill services
Pond construction
Compacted embankments
Water resource facilities
Dams
Through negotiated leasing arrangements,we have
access to any type of "yellow"iron equipment
necessary to perform.These contracts allow us to
use the newest equipment at the leastoverall cost to
you and your project.This allows us to be the most
competitive contractor bringing the best value to
yourproject.Our staffis made up ofseasoned
personnel who understand how to save money
through their experience of moving millions oftons
of dirt,rock and waste No project is beyond our
scope or capabilities
Our personnel are OSHA 40 hourand iVlSHA trained
to work on both environmental and mining projects.
Our OSHA EMR is well below the standard
requirements and it is our philosophy to prioritize
health and safety above all other business
considerations.
http://www.kglassociates.com/index.html 7/9/2009
About KGL Page 1 of 1
About Us
Experience
Worked for many
of the largest
industrial and
mining
companies in the
country
Worked for
environmental,
industrial and
mining
engineering firms
A representative list ofcompanies that KGL and its
personnel have worked for includes:
American Gypsum
Arch Coal
AT &T
Atlas Minerals
Better Materials Corp
CENTEX
CEMEX
Cyprus Amax
MK-Ferguson (Washington Group)
Rio Algom/BHP Billiton
Santa Fe Pacific (Newmont)
Southdown Industries
Umetco
US Silica
6§,1JVe~\Q@5[ing
l;\fg\i'fefu',\W6\il1ar
CEC Engineering
Dept of Energy
Harding ESE
HD
Knight Piesold
Mactec
RUST (Earth Tech)
US Corp ofEngineers
http://www.kglassociates.com/aboutus.html 7/912009
WORLDWIDE RENTAL SERVICES
1125 Legacy View St
Salt Lake City,UT 84104
TEL:[phone]
FAX:[phone]
TOLL FREE:1-877-997-7752
W 0/LOW IDE
RENTAL SERVICES
RENTAL RATE QUOTE
We are pleased to offer the following rates for your review.Quoted rates are good for 30 days.
25 June 2009
Name:Dennison Mines
Address:Blanding,UT
Phone #[phone]
Fax #[phone]
Contact:Deanne
E-mail:[e-mail]
Project Name:
Est.Start Date:
Description ofEquipment Equipment Serial Minimum Term Monthly Rate Mob/Demob Rate
Value No.
PC300 excavator
with 22500.00 2275.00
shear
GENERAL TERMS AND CONDITIONS OF RENTAL
1.Machine month is defined as cost ofone machine per month.Ifmultiple units are required,multiply the base rate times the
number ofunits required.
2.Credit approval will be determined by credit information supplied by the contractor to Worldwide prior to job mobilization.
3.Monthly rate is based on 28 days and 200 hours ofusage.Overtime will be billed at 70%the hourly rate.
4.Payment terms are net 30.
5.All equipment is subject to availablility.
6.Excessive tire wear and ground engaging tool wear to be billed at end ofcontract.
7.Customer must supply insurance binder covering value ofequipment
We look forward to supplying your equipment requirements.Please let me know ifyou have any questions or ifthere is anything else you
need!
HONNEN
~~lIooo~~vIPMENT
February 25,2009
Amy Bushman
Denison Mines USA
6425 S.Hwy 191
Blanding,UT 84511
Dear Amy:
We are pleased to quote rental rates on the following:
1.Grove RT530E (30 ton)Crane $6,400.00/Month
2.Grove RT760E (60 ton)Crane $l1,100.00jMonth
3.Grove RT875E (75 ton)Crane $14,600.00jMonth
We currently do not have a 75 ton available.
Freight will be $700.00 for the 30 ton and $1000.00 for the 60 ton at start and again at end of rental period.
I~WIRTGENGROUP~
We believe the equipment as quoted will exceed your expectations.On behalf of Honnen Equipment Co.,thank
you for the opportunity to quote Grove Lifting machinery.Please call if you have any questions or comments.
Sincerely,
Shane Frazee
Territory Manager
970-270-2070 cell
800-746-6636 office
This proposal subject to the follOWing conditions:
1)Quote valid for 30 days.
2)Specific quoted units subject to availability.
5055 E 7;1.'1 Avenue
Commerce City,CO 80022
303-287-7506
2358 /-70 Frontage Road
GrandJunction,CO 81505
970·243-7090
16 Girard Stroet
POBox 27
Durango,CO 81303
970-247-4460
150 8aft Creek Highway
POBox 1180
Milis,WY 82644
307·2664474
5217 s.Highway59
Gillette,~w 82718
307-685-4288
October 2008 to January 2009
-Fuel Cost Calculation
Producer Price Index -Commodities #2 Diesel
October
November
December
January 2009
282.3 *
224.9 *
171.5 *
164.1 *842.8 $2.107 perGalion
off road use
*4 month Average
.LIU~""'«'U V~L«.UVl IJlCllIL')lH,./~..lJalCl
www.bls,gov Search:IAll BLS.goY ::I for:
rage 1 VI 1
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12at~~~~_~~~_T~~!~~~~_~_~~~l~!~!~_~X~l!QJ~-,~:!~..._..
Change Output Options:From:11999:3 To 12009:.::1 $
FONT SIZE:
r include graphs NEW!
Data extracted on:March 2,2009 (12:28:39 PM)
Producer Price Index-Commodities
Series rd:WPUOS7303
Not Seasonally Adjusted
Group:Fuels and related products and power
Item:No.2 diesel fuel
Base Date:198200
~1ore Formatting Options ~
Year Jan Feb.Mar Apr May Jun Jul Aug Sep Oct Dec Annual
1999'40.2 38.1 '43.2 53.1 53.0 53.5 59.8 65.6 68.8 67.5 71.9 72.7 57.3
2000'76.1 86.1 90.0 84.1 82.8 85.7 92.1 110.8110.0 110.4 101.6 93.3
200196.7 92.483.5 86.4 93.1 90.2 81.6 82.0 91.6 75.9 71.3 56.2 83.4
2002,58.9 60.069.7 76.9 74.7 73.3 77.6 80.492.3 85.5 86.8 77.9
200397.6 123.8,129.4'102.387.9 89.8 92.7 96.6 91.1 101.1 95.9 98.1 100.5
2004,109.3 103.7'109.7119.9121.0 114.2123.0 135.1140.9166.6 159.7 135.3 128.2
2005 141.1 149.5 173.3175.4170.8187.2189.8200.6212.6 264.1 206.2 198.5 189.1
2006,197.1 196.2206.5230.4 239.6'246.9 237.5250.2201.3-197.5 197.2203.0 216.9
2007180.9 193.5220.2238.0226.5227.6243.5'231.2246.2249.6 296.7 271.9 235.5
2008·278.2 287.5'353.7365.1.398.2,421.0,431.9 346.7 342.3 282.3(p)224.9(p).171.5(p)325.3(p)
2009164.1(p)__'--_.1..-_-'-_-'-_-'-_--'-_--'_~'--__'--__-'-__-'-__-j
P :Preliminary.All indexes are subject to revision four months after original publication.
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U.S.Bureau ofLabor Statistics 2 Massachusetts Avenue,NE Washington,DC 20212-0001
www.bls.gov I Telephone;(202)691~5200 100 you have a Data question7
http://data.bis.gOYIPDQ/servIet/SurveyOutputServIet;jsessionid=f030403891615$3F$3F$
bls.gov
3/2/2009
labor Costs
LABOR COSTS
17.67
%ofemployee pay
7.66
9.42
060
Payroll Taxeswe
UI
Labor Cosl/HRFringeCOSlS
2:.28%
Company
Benefits
(medical,life
insure etc)
17.67%
Labor Burden
(FICA,SUI,
FUI etcMandatedFringe
S25.22 S18.76 $4.46 no added cost 523.22 $48.44
S20.82 $4.28 53.68 50.15 58.11 $28.93
521.84 $9.92 53.86 no added cost 513.78 535.62
S1475 53.03 52.61 50.11 55.75 520.50
$14.00 $D.56 52.47 52.42 55.45 519.45
$14.52 52.71 52,57 SO.38 55.66 $20.18
$14.00 $2.47 S2.98 55.45 519.45
$9.00 SO.OO 51.59 $1.92 $3.51 512.51
$12.60 52.23 $2.68 $4.91 517.51
S10.00 51.77 52.13 53.90 513.90
$10.43 5'1.84 $2.22 $4.06 514.49
513.63 $2.41 $2.90 55.31 $18.94
$13.61 52.40 S2.90 55.30 518.91
S1'.38 52.01 52.42 54.43 $15.81
$1275 $2.25 52.71 $4.97 517.72
$13.63 $2.41 52.90 55.31 518.94
$9.42 51.66 52.00 $3,67 $13.09
$12.00 $2.12 $2.55 54.67 S16.67
Base Rate
2009 Estimated LaborRates··
Labor Classification
Ironworkers
Electricians
Cement Masons
Carpenters
Specified Wages
HeavyConstruction
Laborers (including pipelayers)
Ironworkers -Reinforcing
Graders
Loaders
Scrapers
Truck Drivers
Tractors
Trackhoes
Dozers
Pipefitters
POWER EQUIPMENT OPERATORS
BaHerMakers
Backhoes
Millwrights
Cranes
Note:base rates donot include FICA.workercompo unemployment,orcompany benefits WhlCh increase the costper hour
••State ofUtah -General Decision -Current Update UT20080073,4 pages,10/19/2008
1015i2C09·2.12PM •Copy orWMM Rec Plan ESI Sept2009 (2)XiS Der\iscn Mines(USA)Corp.
Wl1tte Me::;aMill
LABOR COSTS
Nonspecified Wages Base Rate'"
Labor Burden
(FiCA,SUI,
Mandated Fringe FUI,etc.
Company
Benefits
(medical,life
insure,etc)Fringe Costs Labor CostlHR
Survey Crew Member
Sample Crew Member
Mechanic (Demolition)
Manager/Engineer
Radiation Safety Officer
Secretary
Clerk
Engineer
Environmental Technician
SafelyEngineer
Maintenance Foreman
Security Personnel
Chemist
$11.15 SO.OO $1.97 $2.37 $4.34 $15.49
$11.15 SO.OO $1.97 $2.37 $4.34 515.49
511.58 SO.oo 52.05 $2.46 $4.51 $16.09
$40.78 SO.OO $7.21 $8.68 $15,88 $56.66
$31.86 SO.OO $5.63 S6.78 $12.41 $44.27
$12.89 SO.OO $2.28 $2.74 55.02 517.91
$10.60 $0.00 $1.87 5226 $4.13 $14.73
$31.86 SO.OO $5.63 $6.78 $12.41 544.27
517.94 SO.OO 53.17 53.82 $6.99 524.93
517.94 $0.00 $3.17 $3.82 $6.99 524.93
$2338 SO.OO 54.13 54.98 $9.11 $32.49
$6.91 So.OO $1.22 $1.47 $2.69 $959
$18.76 $0.00 53.31 $399 $7.31 $26.06
...Reflects 0.0%cost of ;ivin9 raise for 2009
10tSf2009·2:12PM·Copy 01WMM Rcc Plan EstScpl2009{2}x15 Denison Mines(USA)Corp.
White MesaMi:f
ragc:I VI '+
GENERAL DECISION:UT20080073 10/10/2008 UT73
Date:October 10,2008
General Decision Number:UT20080073 10/10/2008
State:Utah
Construction Type:Heavy
County:San Juan County in Utah.
Including Natural Gas Pipeline Construction
Modification Number
o
Publication Date
10/10/2008
ENGI0003-047 07/01/2008
Excluding Natural Gas Pipeline Construction
Rates
POWER EQUIPMENT OPERATOR
(3)Backhoe $24.53
ENGI0003-054 11/01/2007
Natural Gas Pipeline Construction Only
Rates
POWER EQUIPMENT OPERATOR
Backhoe/Excavator/Trackhoe,
Blade/Grader,Boom,
Bulldozer,Crane,
Mechanic,Trencher $30.25
Oiler $17.66
LAB00295-018 11/01/2007
Natural Gas Pipeline Construction Only
Rates
LABORER
Chain Saw and Power Drill ...$18.86
Common or General,Nail
gun,Pipelayer,Pot Tender ..$17.61
Formworker $18.61
Powderman $19.36
Sandblaster $18.36
SUUT2008-028 08/19/2008
Rates
CARPENTER,Including Form Work
(Excluding Natural Gas
Pipeline Construction Form
Fringes
12.71
Fringes
13.14
9.64
Fringes
4.94
4.94
4.94
4.94
4.94
Fringes
http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=Davis-Bacon&docid=UT2008...2/1612009
Work)$14.75
CEMENT MASON/CONCRETE FINISHER ...$14.00
LABORER:Mason Tender -
Cement/Concrete $9.00
LABORER:Common or General
(Excluding Natural Gas
Pipeline Construction)$12.00
LABORER:Pipelayer (Excluding
Natural Gas Pipeline
Construction)$9.00
OPERATOR:Roller (Dirt and
Grade Compaction)$10.89
OPERATOR:Blade/Grader
(Excluding Natural Gas
Pipeline Construction)$13.61
OPERATOR:Excavator
(Excluding Natural Gas
Pipeline Construction)$12.75
OPERATOR:Front End Loader $11.38
OPERATOR:Trackhoe (Excluding
Natural Gas Pipeline
Construction)$13.63
TRUCK DRIVER (Excluding
Natural Gas Pipeline
Construction)$12.00
TEAM0222-020 11/01/2007
NATURAL GAS PIPELINE CONSTRUCTION ONLY
Rates
TRUCK DRIVER
Group 1:
Articulated End Dump,Low
Boy,Rollagon or Similar
type Equipment,Truck
Mechanic $27.14
Group 2:
A-Frame,Challenger(For
transportation purposes),
Forklift,Fuel Truck,Gin
Pole,Rubber-Tired
Tractor,Tandem Float (4
&5 Axle),Track
Truck/All-Track Dumper
Equipment,Vacuum Truck,
Winch Truck $26.68
Group 3:
Ambulance,Bus,Dump
3.03
0.56
0.36
0.00
0.00 Y'"
0.00
0.00 /'
0.00 .r
0.00 ,/
0.00 ,/'
0.00 ,/
Fringes
8.74
8.74
http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=Davis-Bacon&docid=UT2008...2/1612009
Truck (2 and 3 axle),
Flatbed Truck (2 and 3
axle),Grease Truck,Hot
Pass Truck (3 axle),
Jeep,Pick-up,Single
Axle Float (3 axle),Skid
Truck (2 and 3 axle),
Station Wagon,Stringer
Bead &Hot Pass (2 axle),
Swamp Buggy/Marsh Buggy,
or similar type
equipment,Team Driver,
Water Truck (2 and 3 axle).$26.39
Premium Pay:
8.74
I ac;c;J VI .....
Add $1.25 to the above Rate for the following classifications
Group 1:Low Boy and Truck Mechanic
Group 2:Stringer Truck
WELDERS -Receive rate prescribed for craft performing
operation to which welding is incidental.
========================================================
Unlisted classifications needed for work not included within
the scope of the
classifications listed may be added after award only as
provided in the labor
standards contract clauses (29 CFR 5.5 (a)(1)(ii)).
In the listing above,the "sun designation means that rates
listed under the
identifier do not reflect collectively bargained wage and
fringe benefit
rates.Other designations indicate unions whose rates have
been determined
to be prevailing.
WAGE DETERMINATION APPEALS PROCESS
1.)Has there been an initial decision in he matter?This can
be:
*an existing published wage determination
*a survey underlying a wage determination
*a Wage and Hour Division letter setting forth a position on
a wage
determination matter
*a conformance (additional classification and rate)ruling
On survey related matters,initial contact,including requests
for summaries
http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=Davis-Bacon&docid=UT2008...2/1612009
r dt:;1;'-t Vi '+
of surveys,should be with the Wage and Hour Regional Office
for the area in
which the survey was conducted because those Regional Offices
have
responsibility for the Davis-Bacon survey program.If the
response from this
initial contact is not satisfactory,then the process described
in 2.)and
3.)should be followed.
with regard to any other matter not yet ripe for the formal
process
described here,initial contact should be with the Branch of
Construction
Wage Determinations.Write to:
Branch of Construction Wage Determinations
Wage and Hour Division
U.S.Department of Labor
200 Constitution Avenue,N.W.
Washington,DC 20210
2.)If the answer to the question in 1.)is yes,then an
interested party
(those affected by the action)can request review and
reconsideration from
the Wage and Hour Administrator (See 29 CFR Part 1.8 and 29 CFR
Part 7).
Write to:
Wage and Hour Administrator
U.S.Department of Labor
200 Constitution Avenue,N.W.
Washington,DC 20210
The request should be accompanied by a full statement of the
interested
party's position and by any information (wage payment data,
project
description,area practice material,etc.)that the requestor
considers
relevant to the issue.
3.)If the decision of the Administrator is not favorable,an
interested
party may appeal directly to the Administrative Review Board
(formerly the
Wage Appeals Board).write to:
Administrative Review Board
U.S.Department of Labor
200 Constitution Avenue,N.W.
Washington,DC 20210
4.)All decisions by the Administrative Review Board are final.
END OF GENERAL DECISION
http://frwebgate.access.gpo.gOYIcgi-binigetdoc.cgi ?dbname=Davis-Bacon&docid=UT2008...2/16/2009
Harold Roberts
From:
Sent:
To:
Cc:
Subject:
Frank Norante [[e-mail]]
Friday,September 04,20093:15 PM
Frank Norante
Carol Marsala;Harold Roberts;Thomas McBeath
Re:Denison Mines USA Re:Insurance estimates for Mill reclamation
Carol,to clarify,the rate below are per $100 of payroll.
Frank
Thanks)
Frank
Norante/MN/ARS/US
IAON
09/04/2009 03:03
PM
Carol Marsala
<[e-mail]>
To
cc
Harold Roberts
<[e-mail]>,Thomas
McBeath/ARS/CA/AON@AONNA
Subject
Denison Mines USA Re:Insurance
estimates for Mill reclamation
(Document link:Frank Norante)
hello Carol)I contacted Aig Insurance and was provided Work.Compo rates
for the work you described,to dismantle the Mill facility and to move &
process soils.The Base rates(rates before any adjustment factors used on
the policy are applied)through the Aig Insurance group for this work are:
Excavation -Code 6217 -$9.42
Building Wrecking -Code 5213 -$9.36
If the work is performed by Denison Mines employees,the Net rates with the Denison credits
on the current policy would be:
6217 -$8.17
5213 -$8.16
Thanks,Frank
Carol Marsala
<CMarsala@denison
mines.com>
09/03/2009 03:07
PM
Frank,
To
Frank Norante
<[e-mail]>
cc
Harold Roberts
<[e-mail]>
Subject
Insurance estimates for Mill
reclamaUon
We need to budget the cost of Employers Liability insurance for our mill reclamation
estimates.
Our current workers comp for mill workers is 1.93/$1000.Doesn't that include employers
liability?
What would our WC/Employers Liability rates be for excavation workers and for demolition
workers in Utah.
(One of the Utah state employees is quoting R.S.Means as 10.46%of labor cost for
excavation,and 36.28%for wrecking labor.Does this seem right to you?)
Of course I need this ASAP.
Thanks,
2
Carol
Carol Marsala
Corp.Admin.Manager
t:[phone] I f:[phone]
1050 17th Street,Suite 950,Denver.CO 80265
DENISON MINES
(USA)CORP
www.denisonmine
s.com
This e-mail is intended for exclusive use the person(s)mentioned as the
recipient(s).This message and any attached files with it are
confidential and may contain privileged or proprietary information.If
you are not the intended recipient(s)please delete this message and
notify the sender.You may not use,distribute print or copy this message
if you are not the intended recipient(s).
3
long Term Care
LONG TERM CARE CALCULATION
February 2009
Base Amount (Starting in Dec.1978)
CPI-U December,1978
CPI-U December 2008
$250,000
67.7
210.2
Adjusted Long Term Care =$250,000 x (CPI-U most recent /CPI-U Dec.,1978)
Adjusted Long Term Care
2/16/2009 -12:36 PM -WMM Rec Plan Est February 2009.xls
$776,322
Denison Mines (USA)Corp.
White Mesa Mill
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Year Jan Feb Mar Apr May lun lui Aug Sep Oct Nov Dec Annual HALF1 HALF2
1998'161.6 161.9 162.2 162.5 162.8 163.0 163.2 163.4 163.6 164.0 164.0 163.9 163.0 162.3 163.7
1999'164.3 164.5 165.0 166.2 166.2 166.2 166.7 167.1 167.9 168.2 168.3 168.3 166.6 165.4 167.8
2000'168.8 169.8 171.2 171.3 171.5 172.4 172.8 172.8 173.7 174.0 174.1 174.0 172.2 170.8 173.6
2001175.1 175.8 176.2 176.9 177.7 178.0 177.5 177.5 178.3 177.7 177.4 176.7 177.1 176.6 177.5
2002177.1 177.8 178.8 179.8 179.8 179.9 180.1 180.7 181.0 181.3 181.3 180.9 179.9 178.9 180.9
2003181.7 183.1 184.2 183.8 183.5 183.7 183.9 184.6 185.2 185.0 184.5 184.3 184.0 183.3 184.6
2004185.2 186.2 187.4 188.0 189.1 189.7 189.4 189.5 189.9 190.9 191.0 190.3 188.9 187.6 190.2
2005190.7 191.8 193.3 194.6 194.4 194.5 195.4 196.4 198.8 199.2 197.6 196.8 195.3 193.2 197.4
2006198.3 198.7 199.8 201.5 202.5 202.9 203.5 203.9 202.9 201.8 201.5 201.8 201.6 200.6 202.6
2007.202.416,203.499;205.352.206.686,207.949'208.352'208.299'207.917,208.490'208.936'210.177'210.036'207.342'205.709 208.976
2008,211.080'211.693'213.528,214.823'216.632.218.815'219.964,219.086;218.783 216.573'212.425'210.228'215.303.214.429,216.177
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2/16/2009
ATTACHMENT D
RECLAMAnON MATERIAL CHARACTERISTICS
PREPARED BY
INTERNATIONAL URANIUM (USA)CORP.
INDEPENDENCE PLAZA
1050 17TH STREET,SUITE 950
DENVER,CO 80265
Attachment D -Reclamation Material Characteristics
Material proposed for use in the reclamation ofthe White Mesa Mill tailings cells is available from
stockpiles on the site,which were generated from construction of the existing cells.In the case of
clay material for radon barrier,it is available to supplement the onsite material from the Section 16
borrow site located approximately 3 miles to the south ofthe exiting cells.
The characteristics ofthe materials are generally described in the text ofthe Reclamation Plan.In
addition,test work was completed on the clay borrow material as well as the onsite stockpiles.
The Section 16 clay material was originally tested in 1982 by D'Appolonia Consulting Engineers,
Inc.This test work included:
--Classification
-Grain size,sieve and hydrometer
-Atterberg limits
-Specific gravity
--X-ray diffraction
--Cation Exchange Capacity
--Exchangeable Cations
--Modified Proctor
--Permeability
A copy ofthe full D'Appolonia Report is included in this Attachment
The onsite random fill and clay stockpiles were sampled in characterized in a program detailed in
the April 15,1999,submittal to the NRC,"Additional Clarifications to the White Mesa Mill
Reclamation Plan".A copy ofthis sampling and testing program are included in this Attachment
as well as the results ofthe characterization work.The samples wee characterized for:
--Classification
-Grain size and sieve
-Atterberg limits
--Standard Proctor
The results ofthese tests for the onsite stockpiled material are included in this Attachment.
CONSULTING ENGINEERS,INC.
March 8,1982
Project No.RM78-682B
Mr.H.R.Roberts
Energy Fuels Nuclear,Inc.
1515 Arapahoe Street
Three Park Central,Suite 900
Denver,Colorado 80202
Letter Report
Section 16 Clay Material Test Data
White Mesa Uranium Project
Blanding,Utah
Dear Harold:
This report presents the results of field investigations and laboratory tests
performed on Section 16 clay material.The material tested was obtained from
borings and test pits made in April 1979.The laboratory tests were performed
and the data retained in our files until your recent request for the data.
Field Investigations
The area of investigation is a canyon located in Section 16,about three miles
south of the mill site.Seven borings were dril~ed as part of the field
investigations.These borings,100 through 106,are located approximately as
shown on Figure 1.
The borings were drilled with a rig provided by Energy Fuels using the rotary
method with air pressure to flush out the cuttings.Samples were obtained by
sampling the cuttings on five foot intervals.Only qualitative information on
the subsurface materials is available because of the method of drilling and
sampling utilized.However,the qualitative information and samples obtained
are suitable to provide preliminary data on the character of the subsurface
materials present.
Three test pits (1-3)were excavated to obtain bulk samples for laboratory
testing.The location of the test pits is shown on Figure 1.
Samples from Boring 2-16 drilled by Energy Fuels in November 1978 were also
provided to D'Appolonia for testing.The location of Boring 2-16 is shown on
Figure 1.
7400 SOUTH ALTON COURT,ENGLEWOOD,CO 80112 TELEPHONE:[phone]
BECKLEY,WV CHESTERTON,IN.CHICAGO,IL HOUSTON,TX
PITTSBURGH,PA WILMINGTON,NC BRUSSELS,BELGIUM
TELEX.45-4565
'..AGUNA NIGUEL.CA
SE8V..KOREA
Mr.H.R.Roberts
Subsurface Conditions
2 Ma r .::h 8,1982
The subsurface conditions in the canyon,based on the boring data,are shown
on Cross Sections A-A'and B-B'presented on Figures 2 and 3,respectively.
The plan locations of these cross sections is shown on Figure 1.As shown on
the cross sections,the subsurface consists of a surficial layer of red clayey
and silty sand about five feet thick.The underlying material is ,mostly a red
or gray silty clay.The consistency of the silty clay layer varies from stiff
to hard,based on observations of the drillers and rig during drilling.A
lense or layer of very hard silt was noted in Boring 105.This layer appears
to be a well cemented unit from the cutting samples obtained.In Boring 106,
the surficial sand layer was about 20 feet thick and a clayey sand layer was
also encountered at a depth of about 30 feet.
The laboratory soil classifications for the tested samples are also shown on
Cross Sections A-A'and B-B'.The testing program is discussed in detail in
the following section,however,the testing results indicate that the silty
clay layer is mostly a CL or CH material with one sample being a SM and two a
ML.These test results show the material is basically a fine grained soil
with a varying amount of silt and clay size particles.The plasticity
characteristics of the material vary from low to high.Further discussion of
the test results and material characteristics is given below.
Water in the borings was not noted except for Boring 104 for which a depth of
about 43 feet was measured.This depth is not considered completely reliable
since it was measured only one day after drilling and the water level may not
have had time to stabilize.
Laboratory Test Results
The laboratory testing program conducted on samples from the borings and test
pits included the following types of tests:
o Classification
Grain size,sieve and hydrometer
Atterberg limits
Specific gravity
o X-Ray Diffraction
o Cation Exchange Capacity
a Exchangeable Cations
o Modified Proctor Compaction Density
o Permeabili ty
The results of the classification tests are given on Table 1.The soil
classifications given are shown on Cross Sections A-A'and B-B'(Figures 2 and
3)and were discussed above.
Mr.H.R.Roberts 3 Mar.:h 8,1982
The cation exchange capacity (CEC)and exchangeable ions were conducted to
evaluate the type of clays present and the chemical effects resulting from
contact with the tailings liquid.Tests were run on samples from Test Pits 2
and 3 samples and Boring 103 (15-20 foot depth).Soil from each sample was
treated by soaking in simulated tailings liquid for 48 hours before testing.
Both treated and untreated (as received)samples were tested and the results
are presented on Table 2.Results of the testing are summarized as follows:
o The untreated samples indicate pH (1:1)values between
7.40 and 8.35 with CEC values in the 45-56 meq/lOOg
range.The predominate exchangeable ions are calcium
and sodium for Test pits 2 and 3 and calcium and
magnesium for Boring 103 (15-20 ft).
o The treated samples indicate pH (1:1)values between
1.70 and 2.35 with CEC values in the 90-100 meq/100g
range.The predominate exchangeable ions are hydro-
gen,calcium,and magnesium for all the samples.
These results indicate that exposure to the tailings water causes:
the pH (1:1)of the material to decrease.
the exchangeable hydrogen and magnesium to
increase.
the exchangeable calcium and sodium to decrease.
the CEC to increase by a factor of about two·due
primarily to the large increase in exchangeable
hydrogen.
The effects of these changes on clay material properties,particularly
permeability,is discussed in the .following paragraphs.
The X-ray diffraction tests were run on material from the same three samples
as tes·ted for CEC and exchangeable ·ions.The x-ray diffraction testing was
conducted to evaluate the type of clay minerals occurring in the material.
The results of the testing are given on Table 3.As shown,about 50 percent
of the material is quartz,25 percent montmorillonite,25 percent illite,and
minor percentages of other minerals.Montmorillonite is an active clay
mineral which typically has a low coefficient of permeability.Illite is also
a clay mineral,but it is typically relatively inactive with a somewhat higher
coefficient of perm~ability.
Modified Proctor compaction tests were conducted on four different samples.
Test Pits 1,2 and 3 samples were tested and a composite sample from Boring 2-
16 (85 to 210 feet depth).The results of the modified Proctor tests are
given on Table 1.The average maximum dry density measured is 107 pounds per
cubic foot and the average optimum water content is 17.5 percent.
Mr.H.R.Roberts 4 Mar.:h 8,1982
Permeability tests were conducted on compacted samples of material from Boring
2-16 (composite 85-120 feet),Boring 101 (composite 0-25 feet),Boring 103
(composite 0-25 feet)and Test Pit 2.The tests were conducted in perme-
ability cells with a confining pressure applied around the sample which is
encased in a rubber membrane.A differential pressure was applied across the
sample and flow of fluid through the sample measured.Both distilled water
and simulated tailings liquid were used in the tests.The tests on Borings
101 and 103,and Test Pit 2 were conducted over a period of about five months
to assess the effects of tailings liquid on the permeability of the
material.The tests were conducted with distilled water for about two months
to establish saturation and steady state flow.Tailings liquid was then
introduced to the sample and the test continued for three more months.The
results of the permeability tests are presented on Table 4 along with other
pertinent sample data.The material has an average coefficient of Berme-
ability with water of 3.3xlO-10 centimeters per second and 5.lxlO-1 centi-
meters per second with simulated tailings liquid.The test results indicate
that the permeability of the material was essentially the same with distilled
water and tailings liquid and no degradation of the material was indicated.
Conclusions and Recommendations
Based on the field and laboratory inves tigations discussed above,conclusions
which can be made regarding the materials in Section 16 are:
o The material is mostly a silty clay (CL to CH)with
slight variation in properties.The clay minerals are
mostly montmorillonite with some illite.
o The material varies laterally with some layers or
lenses of sand and silt.The consistency of the
material also varies from stiff to hard or very hard.
o The permeability values of the material are very low
and long-term permeabili~y tests conducted with
sUnulated tailings liquid indicate little change Ln
permeability with time.This result is in good
agreement with the results of the CEC,exchangeable
ion tests and x-ray diffraction test results.
o The clay material is suitable for use as borrow for
use as a clay liner or in situ as a natural liner
layer.
Recommendations for further assessment of the clay for use as a borrow area or
in situ clay liner source are:'
o Geotechnical borings with split spoon samples to
assess the material characteristics more specifically,
including consistency,natural water content,and
classification.
~LONJU
Mr.H.R.Roberts 5 March 8,1982
o Field permeability tests (falling or r~s~ng head)~n
the borings to measure the in situ permeability.
o Installation of piezometers to determine the ground
water level.
Additional discussion of the above recommendations can be provided as neces-
sary depending on your needs.
Very truly yours,~~,~
Corwin E.Oldweiler
Project Engineer
CEO:par
BORINGI
TEST PIT
SAMPLE
DEPTH
(FEET)
GRAIN SIZE ANALYSIS
SAND BILT CLAT
(PERCERT)(PERCENT)(PERCENT)
.TABU!
LAIlORATORY TEST RESULTS
ATTERBEIC LIMITS
LIQUID PLASTIC PLASTICITY USCS SPECIFIC
(PERCERT)(PERCERT)(PERCENT)CLASSIfiCATION GRAVITT
OPTIMUM
PROCTOR VALUES
DRY DENSITY WATER CONTENT
(PCF)(PERCENT)
(I)These sasplel are Test pits«(2~ssmple tested before loaklntt.
3 Ssmple tested Ifter loaklntt 16 houri.
65
125
180
COHPOSIU85-210 95
COHPOSn,85-210 IS
101
102
103
104
105
1(1)
2(1)
3(1)
2-16
0-5
5-10
10-15
15-20
5-10
10-15
15-20
0-5
5-10
10-15
15-20
0-5
5-10
10-15
15-20
0-5
5-10
10-15
15-20
61
26
10
7
70
15
13
13
55
30
66
31
58
65
62
11
17
17
3
22
48
50
54
18
38
49
50
30
43
17
31
22
17
17
36
40
50
42
43
5
47
17
26
40
39
12
41
311
37
15
27
17
32
20
18
21·
47
43
33
55
50
o
35
24.0
58.9
73.0
103.0
20.3
17.0
73.8
59.8
71.0
18.4
31.2
35.7
24.0
71.0
108.0
141.2
Ii5.0
32.0
57.5
148.5
18.5
24.1
28.2
31.2
10.2
14.9
24.9
26.6
21.6
16.2
16.5
11.8
12.0
18.9
25.0
18.4
23.0
15.8
25.9
25.3
5.5
34.8
44.8
71.8
NP
NP
10.1
2.1
48.9
33.2
49.4
2.2
14.7
23.9
NP
NP
12.0
52.1
83.0
122.8
92.0
16.2
31.6
123.0
SC-8M
CH
CH
cn
HL
ML
d-
SM
CH
cn
CH
8M
CL
CL
8M
SM
SC
CII
CH
en
CH
CL
cn
CH
sw-SC
c1-s1
2.59
2.71
2.60
2.72
99.9
111.5
101.0
115.8
19.9
15.0
20.5
14.7
TABLE 2
CATION EXCHANGE CAPACITY AND EXCHANGEABLE CATION
TEST RESULTS
PARAMETER UNITS
UNTREATED SAMPLES
TEST PIT TEST PIT BORING
2 3 103
TREATED SAMPLES (1 )
TEST(PfT TEST PIT BORING
2 2 3 103
pH (l:1)8.35 7.40 7.60 2.30 2.35 1.70
Buffer pH NA NA NA 2.28 2.20 2.15
Exchangeable:
H meq/l00g 0 0 0 56.6 57.6 58.2
Ca meq/lOOg 19.5 21.1 25.8 12.3 13.5 18.7
Mg meq/100g 4.3 4.9 15.4 17.0 20.3 17 .8
Na meq/100g 20.0 28.0 6.5 3.7 6.5 2.6
K meq/100g 1.2 2.5 0.6 0.8 1.6 0.5
Cation Exchange meq/100g 45 56 48 90 100 98
Capac i ty (CEC)
~l~samples soaked in simulated tailings liquid for 48 hours before testing •
2 Represents triplicate results.
TABLE 3
X-RAY DIFFRACTION SEMI-QUANTITATIVE RESULTS
SAMPLE QUARTZ ANDESINE MONTMORILLONITE ILLITE MIXED LAYER
Test Pit 2 50%+-5%10-25%10-25%5-10%
Test Pit 3 50%+5-10%10-25%10-25%5-10%
Boring 101 50%+5-10%25-50%Trace -5%
(15 '-20'Depth)
BORING!
TEST PIT
SAMPLE
DEPTH
(FEET)
TABLE 4
PERMEABILITY TEST RESULTS
INITIAL CONDITIONS
DRY DENSITY WATER CONTENT
(PCF)(PERCENT)
COEFFICIENTS OF
WITH DISTILLED
WATER
(CM!SEC)
PERMEABILITY
WITH TAILINGS
LIQUID
(CM/SEC)
103 0-25
101 0-25
2
2-16 85-210
2-16 85-210
116.7 13.3 1.2 x 10-9 9.4 x 10-10
117.5 14.6 5.2 x 10-10 7.5 x 10-10
110.7 14.7 4.7 x 10-10 2.3 x 10-10
101 15 1.0 x 10-10
110 15 5.5 x 10-10
2
23
35
t
22
27 26
WHITE MESA
MILL
34
,
/
I
+-
/.:)145 CJ
I
R 22 E
2120
29
,'-'\
t ",
PREPARED FOR
8 9 10 IIrz-EA SHOWN ON FIG.I
+-I-+ +-....,1417I_~J 15
KEY PLAN
N.T.S.
FIGURE
:9
30
18
..
7
31 32
T 37 S +
-:385 ENERGY
6 PROPERTY
j ,
ENERGY.FUELS NUCLEAR,INC.
DENVER I COLORADO
LOCATION OF BORINGS
AND SUBSURFACE CROSS SECTIONS
'.
,'
\\
\:-
\
\.B -102
\.\
...-.J
1,D~":SCALE\/-",'~Siiiiiiiiiii':~~~~~........,.....I .'/,!=:~:::::----j
~I /,'2eo 0 200 FEET
.N ,/~~ONTOUR "':T'ERVAL =10 FEET___~_--_.-------~..-,.._----------:...e.-.....'.._.
\
\..
\
,\
\\\
/
/,,".
\.
1,..-
\,:121 C\,
I '\
\
'"I "J .•~I 1 ,..../"-
).'.\.....,!
. i'~'.
'....
16
'-.
,
\
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(8-100 C i,
~/)3-101,,~I
\-._~/
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,-".
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(
.._._)"',
,,
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----J.,-:.--...·.-........,.,,.,,..,,.""""r'!"'!'.-.....---.......__-------------.------"r0---------',__....0'~I ~.~f)8~~j ~\\~,,~
/ '1\'-'\.•,\/.\,\~i
\/\\\....,\~o /~."TP""3 .'.\\','"",-
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"'\J-----
'---.-
(
)
REFERENCE
TOPOGRAPHIC MAP OF BLANDING MILL
SITE,SHEET 4,BY DELTA AERIt.L
SURVEYS,INC.,12'-8-76
.i
,
j
i..:.
cr;
I ~.
I~
0a:~UJ
~a::<::~
a::::Joz
5180
5080
BOR ING 106
T
'7 -------t--_
DENSE,LIGHT G~
AND RED CLAYEY SAND
B.0.8-45'
RED,CLAYEY
AND SILTY SAND
APPROXIMATE EXISTING
GROUND 'SURFACE
?
STIFF,RED AND
GRAY SILTY CLAY
SC
CH
(VERY HARD,
RED SILT,CEMENTED
8,08-47'
ML
CL
AI
INTERSECTION WITH
CROSS SECTION B-8'
I
BORING 102r-
BORING 105
T~SM
HARD,RED AND
GRAY SILTY CLAY
808.-60'B.OB,-70'
5160
BORING 100
T
5120
5100
5140
5180
A
5080
f'-.m
I
Nro
lJ)
Iro
f'-.:z
0:::
(90::Zw~QJ
<1::£0::::JOZ
oj ".,,
},,
(I:
)
'/'-.
I-
>->-W
QJQJ W
0 l.L.0 ww>:>C 0 ZU0::W 0-0I0--U<I:l-
e:::(
'-C\J >~CO
~0:w
'--.JCO:E Wcr'1
Z
::c>-
<l:QJ
0::
0
5060 5060
HORIZONTAL SCALE
i ~
200 0 200 FEET
VERTI CAL SCA LEl~iiiiiiiiiiiiC~~i~~~~~
20 0 20 FEET
(LOOKING NORTH)
FIGURE 2
THE DEPTH AND THICKNESS OF THE SUBSURFACE STRATA
INOICATED ON THE SECTIONS WERE GENERALIZED FROM
AND INTERPOLATED BETWEEN THE TEST BORINGS
INFORMATlON ON ACTUAL SUBSURFACE CONDITIONS
EXISTS ONLY AT THE LOCATION OF THE TEST BORINGS
AND IT IS POSSIBLE THAT SUBSURFACE CONDITION'S
BETWEEN THE TEST BORINGS MA Y VARY FROM THOSEINDICATED
LEGEND;
CH -LABORATORY SOIL
CLASSIFICATION
(UNIFIED SOIL
CLASS IFICATION SYSTEM)
NOTES:
I.FO R PL AN LOCATION OF
CROSS SECTION,SEE
FIGURE I.
2,VE RTI CAL EXAGGERATIOfl
EQUALS 10 X
SUl:3SURFACE CROSS SECTION A-I.
PREPARED FOR
ENERGY FUELS NUCLEAR,INC,
DENVER 1 COLORADO
~1 D·o,\.'iIDTI Dr(DIJ 'I D"'''""n '\.J..i ~L -~~'\...L J.l ,-_;..1\I A"""",.u.....Y\...
--co
rn 8 1I8Nco5180U)5180 -----,co BORING 103r---
:2 -1=0:::
"0::INTERSECTION WITH2w~aJ CROSS SECTION A-A
<t::E Io::::J 5160 BORING 102 516002
.):"TJ
(j ")
5140 A PPROXIMA TE EXISTING 5140
GROUND SURFACE ML l-I-WWCLW>->-aJ W LLaJLLBORING104
0 0 Tww>RED,CLAYEY AND Z~0 Z
U 0::0 5120 SILTY SAND 5120 0wa.--I a.l-I-u <t «SM «
....C\l >>~CXl W CL Wu"-~-I -I....0
CXl::E W W
Cl::"1"5100 STIFF,RED AND B.O.B.-55'5/00
CL GRAY SILTY CLAYz
~>-8.0.B.-47'<taJ
0::
0
5080 5080
B.O.B.-46'
5060 5060
HORIZONTAL SCALE
I !j
200 0 200 FEET 20
VERTICAL SCALE
:o 20 FEET
(LOOK ING WEST)
FIGURE 3
THE DEPTH AND THICKNESS OF THE SUBSURFACE STRATA
INDICATED ON THE SECTIONS WERE GENERALIZED FROM
AND INTERPOLATED BI.:TWEEN THE TEST BORINGS
INFORMATION ON ACTUAL SUBSURFACE,CONOITIONS
EXISTS ONLY AT THE LOCATION OF THE TEST BORINGS
AND iT IS POSSIBLE THAT SUBSURFACE CONDITIONS
BETWEEN THE TEST BORINGS MAY VARY FROM THOSE
iNDICATED
LEGEND:
CH -LABORATORY SOIl.
CLAS S1F ICATION
(UNIFIED SOIL
CLASSIFiCATION SYSTEM)
NOTES:
i.FOR PLAN LOCATION OF
CROSS SECTION 1 SEE
FIGURE I.
2.VERTICAL EXAGGERATION
EQUALS 10 X .
SUBSURFACE CROSS SECTION B-B'
PREPARED FOR
ENERGY FUELS NUCLEAR,INC.
DENVE~,COLORAOO
'9 1~~3 tiERCULEN[A'\8 SMITH CO PGH PA
Soil Sampling and Testing Program -White Mesa Mill
The purpose of this Soil Sampling and Testing Program is to verify the soil classification,
gradation and compaction characteristics (standard proctor)of the stockpiled random fill and
clay materials that will be used for cover materials on the tailings cells at the White Mesa Mill.
Additionally this program will verify the compaction characteristics and gradation of the random
fill materials utilized in the platform fill previously placed on Cells 2 and 3.
Sampling
Sampling will take place on each of six stockpiles of random fill (designated RF-1 through RF-6
on Exhibit A),two clay material stockpiles (C-1 and C-2 on Exhibit A),and on platform fill
areas in Cells 2 &3.A total of9 samples will be taken from the random fill stockpiles.Two (2)
samples will be taken from the clay'stockpiles and three (3)samples will be taken from the
covered areas ofthe cells.Samples will be taken from test pits excavated by a backhoe.Samples
will be taken from a depth of 8 feet in stockpiles and from 2 foot depth in cells.One backhoe
bucket full of material will be taken from the test pit at the specified depth and dumped
separately.This sample will be quartered and one quarter will be screened to minus 2"(rocks
over 8"will be removed prior to screening).Two five gallon sample buckets will be filled with
sample randomly selected from the screened fraction.Oversized material remaining after the
screening ofthe sample will be visually classified and then weighed.Sample locations will be
indicated on a site map and sample descriptions will recorded and maintained in the facility's
records.A total of fourteen samples will be submitted for testing during this program.
Testing
Samples will be packaged and shipped to a certified commercial testing laboratory for testing.
Tests will be run on each sample for standard proctor (ASTM D698),particle size analysis
(ASTM C117 and ASTM C136),soil classification (ASTM D2487)and plasticity index
(Atterberg limits ASTM D4318).
SOILTEST.DOC/04/14/99/2:50 PM
MOISTURE-DENSITY RELATIONSHIP TEST
125 ~ill..
~ill..
"I'.
~.......~....~I'..
120 I''-."-V \.'"/,,
j ","...../,r--."0 ~.....Q..115 ~II'i'.."I'...,I''">.
+J "~,.-
(J)1/"c
Q)
"0 ~'i'lo..>.110
I-J ........0 ~~ZAV for
Sp.G.=
2.65
105
100
8 10 12 14 16 18 20
Water content.%
Test specification:ASTM D 698-91 Procedure B,Standard
Oversize correction app lied to each point
Elev/Classification Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Moi st.3/8 in No.200
N/A %2.65 16.1 %
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry dens i ty =122.0 pcf 116.1 pcf 2-1-W
Optimum moisture =11.6 %13.8 %Sand.clayey,grvly,brn
Project No.:804899 Remarks:
Project:International Uranium Corporation SUBMITTED BY:Client
----Locat ion:Soi I Sample Testing TESTED BY:JH
Date:5/3/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING~INC.7[Fig.No.''
LIQUID AND PLASTIC LIMITS TEST REPORT
60
Dashed line indicates the approximate /
/V/,////
/upper limit boundary for .natural soils //////
50 /o-v:.f--
//
//o~//~//////
40 -
/V//
///></-
W //0 /~//
~3O //-
/(.)/F /(/)/
:5 ///a..///////'"20 r-/
//V//o~///~//
////
10 -11 ///
7 /
4 #/////:<f';'~Pl//1/Y MLcrOL MHr OH
/I II
I
10 30 50 70 90 110
LIQUID LIMIT
MATERIALDESCRIPTION LL PL PI %<#40 %<#200 USCS-Sand,veryclayey,sl silty,red 23 19 4 56.9 25.1 8M
Project No.804899 Client:International Uranium Corporation Remarks:
Project:Soil Sample Testing -TestedBy:JH
-Source:Sample No.:2-1-W
----
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING,INC.Fiaure 22
PARTICLE SIZE DISTRIBUTION TEST REPORT
.5
'"100
90
80
70
0::w 60Zu::
I-50ZW00::40Wa..
"'",,'~i
10!--+-+Hi++-1-ti--++---1r+---+--Ht+H-tH--+---+---f-t+H-+--t-+t--H-+--+---it-H+t-++-+--+--+----t++-HH-+-f------+---1
o i i'"::2~00:---:-100:b!-"....................................."--'""--:'1~0..I-l-..........-'--"--........-~1.................."""""'---J.""o--'-.........~0~.1...........................J-...........J--0::-!.0~1.........'-'--'--l-.--'-::O~.OO="1
GRAIN SIZE -mm
o
%+~"%GRAVEL
24.8
%SAN°
50.1
%SILT %CLAY USCS
SM
AASHTO -Pl II
A-2-4(O)19 23
SIEVE PERCENT FINER SIEVE PERCENT FINER SOilDESCRIPTION
inches 0 number 0 o Sand,very clayey,sl silty,red
size size
3 100.0 #4 75.2
2 100.0 #10 66.3
1.5 100.0 #20 60.7
1 97.1 #40 56.9
3/4 93.4 #60 49.9
1/2 86.3 #100 38.8
3/8 SUi #200 25.1
><GRAIN SIZE REMARKS:
°60 -0.726 .0 Tested By:JH
°30 0.0973
°10
><COEFFICIENTS
Cc
Cu
o Source:SampleNo.:2-I-W
Client:InternationalUranium~orporation
Project:Soil Sample Testing'WESTERN COLORADO T£STING.INC.
Proiect No.:804899 Fiaure 38
MOISTURE-DENSITY RELATIONSHIP TEST
124 ,
1\
\
[,-~"
122 ;I I'1\
~~,
If ,~
J 1\\
II ~
'+-r ~1\0
Q.120 I ,,
.II ~1\>,
.j.J r 1\,.-
(j)J ,~c
Q)
u 'rJ--~-t--~~~.-\- -.-_..-
118 ~..~---._..--
>,--J '-."...-'\'-_-r-----\
0 ,\•~\•,
116 1\ZAV for,
1\Sp.G.=
2.65,,
114
6 8 10 12 14 16 18
Water content,%
Test specification:ASTM D 698-91 Procedure B,Standard
Oversize correct ion appl ied to each point
Elevl C Iass if i ca t ion Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Mo i st.3/8 in No.200
N/A %2.65 13.4 %
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density =122.8 pct 122.8 pef 2W-7C
Optimum moisture =10.8 %10.8 %Sand,s i I ty,gravely,br
Project No.:804899 Remarks:
Project:International Uranium Corporation SUBMITTED BY:CIi ent
----Location:Soi I Samp Ie Test i ng TESTED BY:JH
Date:5/3/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING~INC.Fig.No.g
PARTICLE SIZE DISTRIBUTION TEST REPORT
.s'"100
90
80
70
0::W 60Zu::
I-50ZW00::40Wa..
30
20
10
0
200 '100
or <>il ~i j..
I,......~rr--,,",-
\
~"•r.
i !
:i
1 0.1
'GRAIN SIZE -mm
0.01 0.001
%+3"
o
%GRAVEL
15.-9
%SAND
54.5
%SILT %CLAY USCS
-8M
AASHTO
A-2-4(0)
Pl lL
NP
SIEVE
inches
size
3
2
1.5
1
3/4
1/2
3/8
><
o Souroe:
PERCENT FINER
o
100.0
100.0
100..0
JOO.O
95.7
91.0
88.3
GRAIN SIZE
'0.344
0.0781
COEFFICIENTS
SIEVE
number
size
#4
#10
#20
#40
#60
#100
#200
PERCENT FINER
Saml'leNo.:2W-7C
REMARKS:
o Tested By:JH
Client:International Unmium<Jorporation
project:Soil Sample Testing'WESTERN COLORADO JESTING-f INC.
Proiect No.:804899 Fiaure 39
MOISTURE-DENSITY RELATIONSHIP TEST
130 "-,
"~".'""125 ",-
",-
-'"~......~'".....1/"-0 ,
Q.120 4 ""-'\....,.I""'lliI ~,>.~llo......~~"-.-~(/)'f I"cQ)u "~"-
>.115 "llI ,
L ~'"0 "-1'0..
i'-i'-
"110 '....
"-ZAV for'"Sp.G.=
2.65
105
8 10 12 14 16 18 20
Water content,%
Test specification:ASTM D 698-91 Procedure C,Standard
Oversize correction app lied to each point
Elev/Classification Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Moist.3/4 in No.200
N/A %2.65 9.0 %
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry dens i ty =122.4 pcf 119.3 pcf 3-1C
Optimum moisture =10.7 %11.8 %Sand,clayey,grvly,brn
Project No.:804899 Remarks:
Pro.Ject:International Uranium Corporation SUBMITTED BY:CI ient
Locat ion:Soi I Samp Ie Test i ng TESTED BY:JH
Date:5/3/99
MOISTURE-DENSITY RELATIONSHIP TEST ,
WESTERN COLORADO TESTING,INC.Fig.No.9
LIQUID AND PLASTIC LIMITS TEST REPORT
60
Dashed line indicates the approximate /
/V/,////
/upper limit boundary for .natural soils //////
50 -/O~//I/
0<-//~I/I///
40 '--I
//V/
I//><I
W //0 /
~//
~3O //
-/
0 ///i=I~I/I/a..////
20 l-I/'"///////0<'
10 ~f--/l ///
:~~//////1<f~~~I1/////ML crOL MHcrOH
/ I !
10 30 50 70 90 110
LIQUID LIMIT
MATERIALDESCRIPTION LL PL PI %<#40 %<#200 USCS
•Sand,clayey,gravely,brown 26 16 10 69.5 36.9 SM
Project No.804899 Client:InternationalUranium Corpomtion Remarks:
Project:Soil Sample Testing •Tested By:JH
•Source:sample No.:3-1C
----
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING,INC.Figure 23
PARTICLE SIZE DISTRIBUTION TEST REPORT
1 0.1
GRAIN SIZE -mm
s s ssSl::!S";"~~
100 I'~i,,,j 1,
90
80
70
c::W 60Zu::
f-50ZW()c::40Wa.
30
20
10
0
200 100
%+3"%!3RAVEL
0 17.4
fj -i
%SAND
45.1
%SILT
\
).,;-
!'"i
%ClAY USCS
SM
0.01
AASHTO
A-4(0)
0.001
PL -LL
16 26
SIEVE
inches
size
3
2
1.5
1
3/4
1/2
3/8
o
100.0
100.0
100:0
100.0
95.8
91.3
88.3
PERCENT FINER SIEVE
number
size
#4
#10#20
#40
#60
#100
#200
PERCENT FINER
o
82.6
77.4
74:0
69.5
57.0
47.2
36.9
SOILDESCRIPTION
a-Sand,clayey,gravely,-brown
><-GRAINSlZE
><COEFFICIENTS
o Source:S8II!Ple No.:3-1C
REMARKS:
D T.ested By:JH
Client:International UraniumCorponrtion
WESTERN COLORADO T.ESTING~JNC~Project:Soil Sample Testing
Proiect No.:804899 Fiaure 40
MOISTURE-DENSITY RELATIONSHIP TEST
118 .,-~""'Ill.1\
I~\,
J ..~
116 II 1\,
J ,~
1/l ,
~1\1\
II ,\
'+-,0 1\Q.114 I \.,>,
+J J \.-
(f)ifcQ)
lJ J \
>,112 IfL
0 1/'-fi 1\
\,
110 \ZAV for
Sp.G.=\2.70
\
108 \
10 12 14 16 18 20 22
Water content.%
Test specification:ASTM D 698-91 Procedure A,Standard
Oversize correction app lied to each point
Elev/Classification Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Mo i 8t.No.4 No.200
N/A %2.70
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density =117.7 pct 117.7 pcf C1-S1
Optimum moisture =15.1 %15.1 %Clay,v sandy,si I ty,rd
Project No.:804899 Remarks:
ProJ-ect:International Uranium Corporation SUBMITTED BY:Cl ient
Locat ion:Soi I Sample Testing TESTED BY:JH
Date:5/3/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING,INC.Fig.No.'10 i
LIQUID AND PLASTIC LIMITS TEST REPORT
60
Dashed line indicates the approximate /
/V/,'////
/upper limit boundary for !1atural soils //////
50 I-/O~////
/0\//~//////
40 -/
////
/
><///
W //0 /~//
~30 //-/
<.)/1/'/i=/Cf)/
~///a..////
20 I-//'"/
//'<'/'"0\
10 ~r--/1 ///
7 /
4 ///II/11~~J/////Y ML crOL MHr OH
/I
II
10 30 50 70 90 110
LIQUID LIMIT
MATERtAL DESCRIPTION LL PL PI %<#40 %<#200 uses-Clay,very sandy,silty,red 28 16 12 98.3 64.8 CL
Project No.804899 Client:International Uranium COl]>oration Remarks:
Project:Soil Sample Testing -Tested By;JH
-Source:sample No.:Cl-S1
~-
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING,INC.Figure 24
PARTICLE SIZE DISTRIBUTION TEST REPORT
1 0.1
GRAIN SIZE -mm
.s;..5 .5 .5.5 .5 .5 ~'=~51 ;('"100
90
80
70
a:::W 60Zu:
I-50ZW0a:::40Wa.
30
20
10
0
200 100
%+4"%GRAVEL %SAND
0 "0.0 35.2
%SILT %CLAY USCS
CL
0.01
AASHTO
A-6(S)
0.001
PL Ll
16 28·
SIEVE PERCENT FINER SIEVE PERCENT FINER SOILDESCRIPTION
inches 0 number 0 -o-clay,-very sandy,silty,red
size size
3 100.0 #4 100.0
2 100.0 #10 99.9
1.5 100.0 #20 -99.5
1 100.0 #40 98.3
3/4 100.0 #60 96.2
1/2 100.0 #100 92.3
3/8 100.0 #200 -6<t8
><GRAIN SIZE R-EMARKS:
060 o Tested By:JH
D3Q
DlO
><COEFFICIENTS
Cc
Cu
o Source:SamyleNo.:CI-SI
Client:InternationalUraniumCorporation
Project:Soil Sample TestingWESTERNCOLORADOTESTING,INC..
'Nn·804899 Fiaure 41
MOISTURE-DENSITY RELATIONSHIP TEST
130 r\.
'"\...
"'\.
'"125
"'\...-
/ill""""""illl..."'\...
,J ~'",'"....."0 "".....-.....\....Q.120 ~".'"~'-.N ">......,.-(f)r\........"cOJ
"0 I'"->.115 ""L !ll...1"00.0 "'Ill'.-~......'-"""110
~.ZAV for,
Sp.G.=
2.65
105
8 10 12 14 16 18 20
Water content,%
Test specification:ASTM D 698-91 Procedure C,Standard
Oversize correction app lied to eoch point
Elev/Classification Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Moist.3/4 in No.200
N/A %2.65 10.3 %
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry dens i ty =124.2 pcf 120.7 pcf C2-S1
Opt imum moisture =10.3 %11 .5 %Sand,clayey,grvly,brn
Proj ect No.:804899 Remarks:
Pro...-Ject:International Uranium Corporation SUBMITTED BY:Client
Locat ion:Soi I Sample Testing TESTED BY:JH
Date:5/3/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING 7 INC.Fig.No.ll!
LIQUID AND PLASTIC LIMITS TEST REPORT
60
Dashed line indicates the approximate /
/V//,V//
/upper limit boundary for ~atural soils //II//...50 -/
//tr/I
/0\
I v~/I//I/
40 t--
/V//
///></
W I/Cl /?f I/
~30 I/-
/0 VF/(/)/:s //Ia../I//I /I '"20 t--/
//V//0\/II ~III///
10 ~/I //V:---////&1~f.fl//////ML (rOL MHrOH
/ I !•
10 30 50 70 90 110
LIQUID LIMIT
MATERIALDESCRIPTION LL PL PI %<#40 %<#200 uses-Sand,clayey,gravely~brown 25 23 2 48.2 26.7 SM
Project No.804899 Client:International Uranium COlporation Remarks:
Project:Soil Sample Testing -Tested By;JH
i-Source:Sample No.:C2-S1
---
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING,jNC.Fiaure 25
PARTICLE SIZE DISTRIBUTION TEST REPORT
10 1 0.1 0.01 0.001
GRAlN-S1ZE -mm
%GRAVEL %SANO %SILT %CLAY USCS AASHTO Pl LL
31:9 41.4 8M A-2-4(0)23 25
o•
,,
.;
100
90
80
70
a::w 80Zu::
I-50ZW0a::40wa..
30
20
10
0
200 100
%+3"
0
SIEVE PERCENTFINER SIEVE PERCENT FINER -SOILDESCRIPTION
inches 0 number 0 ..0 Sand,clayey,gravely,1Jrown
size size
3 100.0 #4 68.1
2 100.0 #10 58.0
1.5 %;6 #20 52.1
1 94.8 #40 48.2
3/4 90.0 #60 43.8
1/2 84.9 #100 36.0
3/8 80.3 #200 26.7
><GRAIN SIZE .~EMAR.J(S:
°60 2.48 .0 Tested By:JH
°30 0.0977
°10><COEFFJCIENTS
Cc
Cu
o Source:8amyleNo.:C2-S1
.client:International Uraniwn£orporation
WESTERN COLORADO TESTJNG,INC.Project:Soil Sample Testing
No.:804899 Fiaure 42
MOISTURE-DENSITY RELATIONSHIP TEST
114 I""~IIr..
,
r ~\..\
/,,,"\
112 I \,
If \\
~\\
I \\,\\.....~\0 ~Q.1 10 I ,
.II \>-
+J ,,.-
(/)~\c
(j)
-0 ,,
>.108 I~\L
0 ,
\
\
106 \
\ZAV for,
Sp.G.==\2.65.
104
10 12 14 16 18 20 22
Water content,%
Test specification:ASTM D 698-91 Procedure A,Standard
Oversize correction app lied to each point
Efev/C Iass if i cat ion Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Mo i st.No.4 No.200
N/A %2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density =114.1 pcf 114.1 pcf RF1-S1
Optimum moisture =13.2 %13.2 %Cloy,s i I ty,sandy,red
Project No.:804899 Remarks:
Pro-j ect:International Uranium Corporation SUBMITTED BY:C Ii ent
Locat ion:Soi I Samp Ie Test i ng TESTED BY:JH
Dote:5/3/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING,INC.Fig.No.12/
LIQUID AND PLASTIC LIMITS TEST REPORT
110
ML
uscs
63.1
%<#200
90
99.1
%<#40
MHr OH
7
PI
70
20
PL
27
LL
50
LIQUID LIMIT
30
Clay,silty,sandy,red
10
MATERIAL DESCRIPTION
2Of--
6O,...-----------------.,,---...,--..,...--r------r--~~-..,
Dashed line indicates the approximate ///VV
upper limit boundary for natural soils ////
50-///O~/
/o~
//~
40 f--
/,/,///v
-
Project No.804899 Client:International Uranium Corporation
Project:Soil Sample Testing
Remarks:
-TestedBy:JH
-Source:Sample No.:RFl-Sl
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING.INC.Fiaure 26
PARTICLE SIZE DISTRIBUTION TEST REPORT
1 0.1
GRAIN SIZE -mm
jj jj jj .E.E :5 t:!Q";"~~t:!;:t
100
90
80
70
0:::UJ 60Zu:
I-50ZUJ
()
0::40Wa..
30
20
10
0
200 100
%+3"%GRAVEL %SAND
0 -0;0 36;9
%SilT %CLAY USCS
ML
0.01
AASHTO
A-4(O)
0.001
PL U.
SIEVE
inches
size
3
2
1.5
1
3/4
1/2
3/8
><
><
PERCENT FINER
o
100.0100,0
1-00;0
100.0
100.0
100.01-00;0
GRAlN-SIZE
COEFFJCIENTS
SIEVE
number
size
#4
#10
#20
#40
#60
#100
#200
PERCENT FINER
o
100.0
99.8
99.5
99.1
97.6
95.2
63.1
"SOIL DESCRIPTION
.O.clay,silty,sandy,red
REMARKS:
o T.ested By:JH
o Sourye:Sample No.:RFI-Sl'
Client:Jnternational-Draniwn-Corporation
WESTERN COLORADO TESTING.INC..Project:Soil Sample Testing
Proiect No.:804899 Fiaure 43
MOISTURE-DENSITY RELATIONSHIP TEST
125
"I\..
~I\..
~""
~
120 I\..
~
~
~~~~
iiiIll'"'"f''f-"i"'-0
Q.115 ~',,-.'"~>--+J '"'".-
(f)f'c
(j)
"'0 .JI ~~ill....''">-110 ~~1I..cL "-0 "'Ill '"~
"I"'"~~
105 ~f'
"""ZAV for
Sp.G.=
2.65
100
10 12 14 16 18 20 22
Water content,%
Test specification:ASTM D 698-91 Procedure B,Standard
Oversize correction app lied ta each point
Elev/C I ass i fica t ion Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Mo ist.3/8 in No.200
N/A %2.65 18.0 %
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density =118.3 pct 111.3 pct RF2-S1
Optimum moisture =13.2 %16.1 %Sand,clayey,grvly,brn
Project No.:804899 Remarks:
Pro-J-ect:International Uranium Corporation SUBMITTED BY:CI ient
Locat ian:Soi I Sample Testing TESTED BY:JH
Date:5/3/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING,INC.Fig.No.13
PARTICLE SIZEDISTRIBUTJON TEST REPORT
1 0.1 0.01 0.001
"GRAIN SiZE -mm
%GRAVEL %SAND %SILT %CLAY USCS AASHTO PL II
34.8 47.5 SM A-l~b NP NP '
,;,
'N
100
90
80
70
c:::W 60Zu::::.....50Z
W0c:::40Wa..
30
20
10
0
200 100
%+3"
0
f1\::~,.~.I~J !
\1
~
SIEVE
inches
size
3
2
1.5
1
3/4
1/2
3/8
><
><'
o SoUJ'CC:
PERCENT FINER
o
100.0
100.0
100.0
23.2
91.0
83.1
77.5
GRAIN SIZE
3.42
0.203
COEFFICIENTS
SIEVE
number
size
#4
#10
#20
#40
#60
#100
#200
o
65.2
52.644,0
38.8
32.9
25.8
17.7
PERCENT FINER
Sample No.:RF2-S1
SOtlDESCRIPTION
-0 Sand,-sl clayey,gravely,brown
-R-EMARKS:
o TestedBy:JH
'Client:International Uranium-Corporation
WESTERN COLORADO TESTING,INC.,Project:Soil Sample Testing
,Proiect No.:804899 Fiaure 44
MOISTURE-DENSITY RELATIONSHIP TEST
135 '\
1"\
r\.
'\.
130 \.
~
~.........\.
I~f''"~I\.
/I'\,~I\.
'+-~~0 \.Q.125 ,"'I\..I'~">,......-~....-....~(j)~~c iIll..."-Q)....
"0 ~f'~'"">,120 ~,
L '"Cl ~III "*'
.,"-I'ZAV for
115 Sp.G.=
2.65
110
-4 6 8 10 12 14 16
Water content,%
Test specification:ASTM D 698-91 Procedure C,Standard
Oversize correction app lied to each point
Elev/Classification Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Mo i st.3/4 in No.200
N/A %2.65 18.2 %
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry dens i ty =128.7 pet 122.7 pcf RF2-S2
Opt imum moisture =8.8 %10.8 %Sand,gravely,brown
Project No.:804899 Remarks:
Pr~ect :International Uranium Corporation SUBMITTED BY:Cl ient
Locat ion:Soi I Sample Testing TESTED BY:JH
Date:5/3/99
MOISTURE-DENSITY RELATIONSHIP TEST ..I·
WESTERN COLORADO TESTING 7 INC.Fig.No.14;,
PARTICLE SIZE DISTRIBUTION TEST REPORT
'"Ii:
100
90
80
70
0::::W 60Zu::.....50ZW00::::40W0..
30
20
10
0
200 100
r~~1: :11'-:
\J'_J;;:,','i
j !1
,
I..
1 0.1
-GRAiN SIZE -mm
0.01 0.001
o
%+3"%GRAVEL
30.9
%SANO
50.5
%SILT %CLAY USCS
SM
AASHTO
A-2-4(0)
-PL ll.·
NP·NP
SIEVE PERCENT FINER SIEVE PERCENT FINER SOlLDESCRIPTION
inches 0 number 0 o Sand,gravely,-brown
size size
3 100.0 #4 69.1
2 100.0 #10 61.1
1.5 100.0 #20 5604
1 96.2 #40 51.7
3/4 94.8 #60 38.0
1/2 88.4 #100 24.4
3/8 80.1 #200 18:6
><-GRAINSIZE -REMARKS:
°60 1.73 .-0 Tested By:JH
D3Q 0.190
°10><COEFFICIENTS
Cc
Cu
o Source:Sample No.:RF2-S2
Client International Uranium Corporation
WESTERN COLORADO IESTING~INC.Project:Soil Sample Testing
Proiect No.:804899 Fiaure 45
MOISTURE-DENSITY RELATIONSHIP TEST
130 ~
I\.
~I\.
~.i\..
125 "flo..
,,~
"I\.",
I\."-".""'"0 -....~0-120
~,..'"~.,~~-~'">.~~.....,".~"-.-~~rJl /"c ~~Q)
"0 J ,,-"'I'>.115 """"L '-0 1/"-
~~
i'
110 '....
"-ZAV for~Sp.G.=
2.65
105
8 10 12 14 16 18 20
Water content.%
Test specification:ASTM D 698-91 Procedure C.Standard
Oversize correction app lied to each point
Elev/C Iass i fica t ion Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Moist.3/4 in NO.200
N/A %2.65 6.6 %
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry dens i ty =121 .4 .pcf 119.2 pcf RF3-S1
Optimum moisture =11.3 %12.1 %Sand.clayey,grvly,brn
Project No.:804899 Remarks:
ProJ-ect:International Uranium Corporation SUBMITTED BY:CI ient
Locat ion:Soi I Sample Testing TESTED BY:JH
Date:5/3/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING,INC.Fig.No.15 ~
PARTICLE SIZE DISTRIBUTJON TEST REPORT
1 Q1
GRAIN SIZE -mm
0.001
NP
PL LL
A-2-4(0)
AASHTO
0.01
SM
uses%ClAY
~~iiN!::,.,
%SILT
41.4
%SAND
28.0
%GRAVEL
.E .E.E .E ~.E
~~
100
90
80
70
c::
W 60Zu:
I-50Zwt>c::40Wa..
30
20
10
0
200 100
%+3"
0
SIEVE
inches
size
3
2
1.5
1
3/4
1/2
3/8
o
100.0
100.0
100.0
91.2
87.6
83.2
79.8
PERCENTFINER SIEVE
number
size
#4
#10
#20
#40
#60
#100
-#200
PERCENT FINER
o
72.0
62.9
56;6
52.5
48.0
41.2
30,{)
SOIL DESCRIPTION
o Sand,sl clayey,gravely,brown
><GRAIN SIZE
060 1.41
°30
°10
-REMARKS:
-0 T-ested By:JH
><COEFFICIENTS
o Source:Samy1eNo.:RF3-S1
Client:InternationalUraniwn-Corporation
WESTERN COLORADO.TESTING~INC.Project:Soil Sample Testing
Proiect No.:804899 Fiaure 46
MOISTURE-DENSITY RELATIONSHIP TEST
112
'-~
~'"",
"r\\
I ~,,~lo.\110 I ,,,~~
4 ,,
I\.\'I-,,0Q.108 I\.\.,
>.\.......\.\.-III
C \.\Q)
"0 \\
>-106 ~L \CI ,
\,
104 \
ZAV for,
Sp.G.=
~2.65,
102 1\
12 14 16 18 20 22 24
Water content,%
Test spec i fica t ion:ASTM D 698-91 Procedure A,Standard
Oversize correction appl ied to each point
Elev/Classification Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Mo i st.No.4 No.200
N/A %2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry dens i ty =111 ~7 pct 111.7 pct RF3-S2
Optimum moisture =14.3 %14.3 %Clay,v sandy,red
Project No.:804899 Remarks:
Project:International Uranium Corporation SUBMITTED BY:Cl ient
Locat ion:Soi I Samp leTest i ng TESTED BY:JH
Date:5/3/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING.INC.Fig.No.16
LIQUID AND PLASTIC LIMITS TEST REPORT
60
Dashed line indicates the approximate /
/V/~////
/upper limit boundary for !1atural soils //////..50 -/
//7//
0<'//~///
///
40 r--
/V//
///></
W //0 /
~//
~3O //-
//()/i=/en /
:5 ///a.///////~20 c--/
//Y/
/0<'///~//////
10 -.11 ///•7 /
////&1~ft.f-1////Y MLrOL MHrOH4VIIII
10 30 50 70 90 110
LIQUID LIMIT
MATERIAL DESCRIPTION LL PL PI %<#40 %<#200 uscs
•Clay,very sandy,red 28 20 8 69.0 39.0 SM
Project No.804899 Client:futernational Uranium Coxpomtion Remarks:
Project:Soil Sample Testing •Tested By:JH
•Source:Sample No.:RF3-S2
---
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING,INC.Fiaure 27
PARTICLE SIZE DISTRIBUTION TEST REPORT
1 0.1
-GRAIN -SiZE -mm
N·'i !.
I i
:I
0.001
PL U
A-4(O)
0.01
AASHTO
8M
USCS%CLAY
.8 0 ~j ....--,,
%SILT
44.7
%SAND
S .5 .5;5 S ~S ~S
100 N,,,
90
80
70
0::W 80Zu::
I-50ZW
()
0::40Wa.
30
20
10
0
200 100
%+3"%GRAVEL
0 1-6.3
SIEVE
inches
size
3
2
1.5
1
3/4
1/2
3/8
PERCENT FINER
o
100.0
100.0
lOO.e
-100.0
98.7
94.0
90;8
SIEVE
number
size
#4#10
#20#40
#60
#100
-#200
PERCENT FINER
o
83.7
78.2
73.4
69.063.7
45.539;0
SOil DESCRIPTION
o ·Clay,very sandy,red
><GRAIN SIZE
D600.222
D30
D10
REMARKS:
o T-ested By:JH
><COEfFICIENTS
o Source:Sample No.:RF3-S2
.Client:mternationalUraniwn-Corporation
WESTERN COLORADO T.ESTJNG~JNC.Project:Soil Sample Testing
IPrnif:rlNo.:804899 Fiaure 47
MOISTURE-DENSITY RELATIONSHIP TEST
135 '\
I'\.
'\.,
130 '"""-
~....."-l/""'"'I-/\~0Q.125 ,,"I\...,~~~>.~.....",""II"'"\"-.-r\..(fJ ,
C iA-"Q)
1J ~~.....~120 "->.~\L ~'"0 ~,"-~\f'
~~,"..~"115 "1'-00.ZAV for"~Sp.G.="'-2.65
110
6 8 10 12 14 16 18
Water content,%
Test specification:ASTM D 698-91 Procedure C,Standard
Oversize correction app lied to each point
Elev/Classification Nat.Sp.G.LL PI %>%<
Depth USCS MSHTO Mo i st.3/4 in No.200
..
N/A %2.65 18.1 %
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density =127.4 pcf 121.3 pcf RF3-S3
Optimum moisture =10.3 %12.6 %Sand,clayey,grvly,brn
Proj ect No.:804899 Remarks:
PrO-ject:Internat ional Uranium Corporation SUBMITTED BY:CI ient
Locat ion:Soi I Sample Testing TESTED BY:JH
Date:5/3/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING,INC.Fig.No.17,
PARTICLE SIZE DISTRIBUTION TEST REPORT
100
<>~~i i 8 !i ~0(......,,
i
J
ffi 60 1-----t-+t-++t-+-tf-++-!f!-----i-tH-t-H--H-+-+--+---t+H""'-P'ilIo-+I--H--f--+--H-I-H--H--f--l---+---++++--f-+-+---l---l----I
;~1-t--j+tH+t--tt-++-H-~-Ht++-t-tt-,-t-f-t-----t-t+:H++~-t+I~,"",t+--t-f---tH+H-l-+-+--+--+H+++-+-+---+------"J
ffi 40 H-+-+++++-+f-t+---J+--i-ITH-t+tr-!-+--j--+---H+!t++-+-+lt-t~~irr-+-----+t-irt'+[-H---t--+--+---H-++-H-+-+--I---l
0-I'!~~!,
301--t-tt-tt++t-tt-+-+--tt-+--tttT:t-r--t\-j--j--j-----t-ttH-t--t--fr-t--+---i:-'-,l,~!n-.+THrl-t-t-t---t-H-H-J-t--l--t---1
10H-+t-t+++-trl-rlH--t-1+t+t+H-+-+----t-ttH-+--1-+t--Hrl--+---H-Htt++-+--+--+---H-t+H--I-t---l--1
o
%-1-3"%GRAVEL
22.7
SIEVE
inches
size
3
2
1.5
1
3/4
1/2
3/8
o
100.0
100.0
100;0
97.4
97.4
90.9
86.2
PERCENT FINER SIEVE
number
size
#4
#10
#20
#40
#60
#100
#200
o
77.3
69.7
64.1
55.8
38.8
30.2
23.7
PERCENT FINER SOIL DESCRIPTION
o Sand,sl clayey,gravely,-brown
><GRAINSIZE
060 {);523
030 0.147
°10
><COEFFICIENTS
o Source:Sample No.:RF3-S3
-R~MAR~S:
-0 Tested-By:JH
-Client:IntemationalUraniwn-Corporation
WESTERN COLORADO TESTING,INC.Project:Soil Sample Testing
Proiect No.:804899 Fiaure 48
MOISTURE-DENSITY RELATIONSHIP TEST
135 '\,'\
f'
r\.
130 r\.
I\..
~
-~I'\..
~II"'"~"I'\......"I'~0 ~0-125 ~~~"~I'\...~~,~.~
>.~....,l/~~"f\...-~(/),,,-\.c !.......~f\..Q)
\J I'-~'">.120 ~~I-
0 ~.....~-f'
!'ZAV for
115 Sp.G.=
2.65
110
4 6 8 10 12 14 16
Water content,%
Test specification:ASTM D 698-91 Procedure C,Standard
Oversize cor rect ion app lied to each point
Elev/C Iass i fica t ion Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Mo i st.3/4 in No.200
N/A %2.65 7.7 %
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density =127.2 pcf 124.8 pcf RF4-S1
Opt imum moisture =9.9 %10.7 %Sand,clayey,grvly,brn
Project No.:804899 Remarks:
Project:International Uranium Corporation SUBMITTED BY:CI ient
.---
Lacat ion:Soi I Samp Ie Test i ng TESTED BY:JH
Date:5/3/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING~INC.18 i
Fig.No.
LIQUID AND PLASTIC LIMITS TEST REPORT
60
Dashed line indicates the approximate /
/V/,////
/upper limit boundary for.natural soils //////
50 I-----/O~/I//
/0'\
/~III/II
40 -I
/I VI
I//x I
W /I0/
~II
~3O II-
/1/()Vi=I~I
II/a..///////to..20 f--
/y///0'\/II ~/I////
10 ~
/1 I //
7 /
///////9<-f4-////JY ML (r OL MHr OH4/I I -II
10 30 50 70 90 110
LIQUID LIMIT
MATERIAL DESCRIPTION LL PL PI %<#40 %<#200 uscs-Sand,clayey,gravely,brown 22 19 3 51.1 25.5 SM.
Project No.804899 Client:International Uranium Corporation Remarks:
Project:Soil Sample Testing -Tested By:JH
-Source:Sample No.:RF4-S1
---'
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING,INC.Fiaure 28
PARTICLE SIZE DISTRIBUTION TEST REPORT
100
90
80
70
0::w 80Zu::
I-50ZW()
0::40Wa..
30
20
10
0
200 100
.E .E .E .ES-,5 \::!.5...~~~.0 .~i i 8 0 .~Of rl ~It It It,
,,,
i \ll.
1 0.1
-GRAIN -SIZE -mm
0.01 0.001
%+3"
o
%GRAVEL
31.8
%SAND
42.7
%SILT %CLAY USCS
EM
AASHTO
A-2-4(O)
.PL LL
SIEVE
inches
size
3
2
1.5
1
3/4
1/2
3/8
><
o Source:
PERCENT FINER
o
100.0
100.0
1-00.088.1
86.1
81.3
77.7
GRAIN-SIZE
2:11
0.122
Co.EFFICIENTS
SIEVE
number
size
#4
#10
#20
#40
#60
#100
#200
PERCENT FINER
o
68.2
59.6
54;6
51.1
44.7
33.3
25:5
Sample No.:RF4-S1
SOILDESCRIPTION
o -8and,clayey,gravely,-brown
REMAR-KS:
o Tested·By:JH
-Client In~tional Uranium-Corporation
Project:Soil Sample TestingWESTE~COLORADO IESTING~INC..
Proiect No.:804899 Fiaure 49
MOISTURE-DENSITY RELATIONSHIP TEST
130 "-
I\.
"f\..
"'-f\..
"'-
125
f\..
L.o..f\..
,.."~I'"IiIl..I\.
~~N l!!l...I\..'+-'(~"'Ill ~0 f\..Q.120 ~~~.~~>-......"~.-
(JJ "f"cQ)
"0 ~,
>-.115 .""L .....0 ......r-.....
~
I'-
'"110 ,ZAV for"-Sp.G.=
2.65
105
8 10 12 14 16 18 20
Water content.%
Test spec i fica t ion:ASTM D 698-91 Procedure B.Standard
Oversize correction app lied to each point
Elev/Classification Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Mo ist.3/8 in No.200
N/A %2.65 4.1 %
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density =123.5 pcf 122.2 pcf RF5-S1
Optimum moisture =11.3 %11 .7 %Sand,clayey,grvly,brn
Proj ect No.:804899 Remarks:
Project:International Uranium Corporation SUBMITTED BY:C Ii ent--.
Locat ion:Soi I Samp Ie Test i ng TESTED BY:JH
Date:5/3/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING,INC.Fig.No.19 1
LIQUID AND PLASTIC LIMITS TEST REPORT
60
Dashed line indicates the approximate /
/V/,////
/upper limit boundary for.natural soils //////
50 -/O~////
/0'"//~//
///
/
40 I--/
//V/
///></
W //Cl /
~/
/
~3O //
-/
U //Vi=/(/)/
:5 ///a.///////'"20 I--
I V///0'"///~/
/
////
10 I--/1 / /
/
:--/l/////9';~f-//;fIY MLrOL MHrOH
/ I !
10 30 50 70 90 110
LIQUID LIMIT
MATERIAL DESCRIPTION LL PL PI %<#40 %<#200 uscs-Sand,clayey,gravely,brown 24 18 6 74.3 41.6 SM
Project No.804899 Client:International Uranium Corporation Remarks:
Project:Soil Sample Testing eTested By;ill
-Source:Sample No.:RFS-SI
..--'
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING,INC.Figure 29
PARTICLE SIZE DISTRIBUTION TEST REPORT
100 ~~~i
!!'I-~90 I--f----H-IH-I-+-*-H--+.--+-/tf~f-i'oofj-r +-+-_I_--t+H+-H-++----++_I_-t--H44++-++_I_+_-J---Hf-++++_+_+_-J---'!
;Ao.""",,~,"-­
801----i~_H_IH-I-j--H-H--t+--+-H+-H-H+-+_+----I--'=--...H:tH-H-++-++_I_-+-_+H-l+f-++_I_+__+_-_H_l+++_+_+__!_-_l
1 0.1
GRAIN SiZE -mm
70
0::W 60Zu::
I-50ZWU0::40Wa.
30
20
10
0
200 100
%+4"%GRAVEL
0 13.2
%SANO
45.2
%SILT %CLAY USCS
-SM
0.01
AASHTO
A-4(O)
0.001
-PLLL
SIEVE PERCENT FINER SIEVE PERCENT FINER -SOILDESCRIPl'ION
inches 0 number 0 o Sand,clayey,gravely,-brown
size size
3 100.0 #4 86.8
2 100.0 #10 82.2
1.5 100,0 4120 7&.3
1 97.2 #40 74.3
3/4 97.2 #60 67.8
1/2 93.9 #100 56.2
3/8 92.-0 41200 41:6
-:><-GRAIN SIZE REMARKS:
°60 \l.176 o T<lStedBy:JH
°30
D10
><COEFFICIENTS
Cc
Cu
o Source:Sample No.:RF5-Sl
-.client:International Uranium-Corporation
WESTERN COLORADO TESTING,INC.Project:Soil Sample Testing
804899 Fiaure 50
MOISTURE-DENSITY RELATIONSHIP TEST
130 ~
'"'-
"I\.~!"'Illo.
,~'"""125 J """,-
'f ~~",-
,/~i""""'Illillo.."'-~~ilI..'"'+-I/'~...0 '-a.120 /~IIlr..\...,~~~>,
+'"-ll.."-.-
III '""c(j)
l:J ""-"->,115 ~,"'L ~0 ..'""ZAV for
Sp.G.=
110 2.65
105
6 8 10 12 14 16 18
Water content,%
Test specification:ASTM D 698-91 Procedure C,Standard
Oversize correction app lied to each point
Elev/Classification Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Mo i st.3/4 in No.200
N/A %2.65 11 .7 %
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density =126.6 pct 122.8 pct RF6-S1
Optimum moisture =9.2 %10.4 %Sand,clayey,grvly,brn
Project No.:804899 Remarks:
Project:International Uranium Corporation SUBMITTED BY:CI ient-Locat ion:Soi I Sample Testing TESTED BY:JH
Date:5/3/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING,INC.Fig.No.20,
LIQUID AND PLASTIC LIMITS TEST REPORT
MHr OH
40-
20-
6Or-----------------~--...,__.,...-.,.._--r__-~.,.._-..,
Dashed line indicates the approximate ///VV
upper limit boundary for !latural soils /////~
~~I ~,
/
/~o'l/01/
//~
~
LIQUID LIMIT
-
10 30
MATERIALDESCRIPTION
Sand,clayey,gravely,brown
LL
23
PL
16
70
PI
7
%<#40
53.0
90
%<#200
30.6
110
uses
GC-GM
Project No.804899 Client:International Uranium COIporation
Project:Soil SampleTesting
Remarks:
-Tested By;JH
-Source:Sample No.:RF6-S1
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING,INC.Fiaure 30
PARTICLE SIZE DISTRIBUTION TEST REPORT
100
90
80
70
0::W 60Zu::
I-50ZW
()
0::40Wa
30
20
10
0
200 100
.5 .5 .5.5 -,E $£,,:,~~$
Nii,.
1 0.1
GRAIN SIZE -mm 0.01 0.001
o
%+~..%GRAVEL
35.3
%SAND
34.1
%SILT %CLAY USCS
(K>GM
AASHTO
A-2-4(B)
-PL LL
1-6 23
SIEVE
inches
size
3
2
1.5
1
3/4
1I2
3/8
o
100.0
100.0
100.-0
8&.9
84.7
76.8
71.6
PERCENT FINER SIEVE
number
size
#4
#10
#20
#40
#60
#100
#200
PERCENT FINER
'><GRAIN SIZE
060 2.23
°30
°10><COEFFICIENTS
o Source:Sample No.:RF6-S1
REMARKS:
o Tested By:ill
Client:International Uranium Corporation
WESTERN COLORADO TESTING,INC.Project:Soil Sample Testing
Proiect No.:804899 Fiaure 51
MOISTURE-DENSITY RELATIONSHIP TEST
114 ,
\-,
"-lo..
/"lIl",\
112 I "I\.,,,\
I r\.\,~
J \,
'I-'I ~0 \0-110 r \,
"1 ~\>-+'\,.-
(f)\c ..QJ
iJ \,
>-108 .,1\L
0 ,
\
1\
106 \
~ZAV for
\Sp.G.=
\2.65~
104
10 12 14 16 18 20 22
Water content,%
Test specification:ASTM D 698-91 Procedure ,A,Standard
Oversize correction appl ied to each point
Elev/C Iass if ico t ion Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Mo ist.No.4 No.200
N/A %2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry dens j ty =113.1 pct 113.1 pct RF7-S1
Optimum moisture =13.9 %13.9 %Clay,v sandy,s i I ty,rd
Project No.:804899 Remarks:
Pr~ect ;International Uranium Corporation SUBMITTED BY;CI ient
Locat ion:Soi I Samp Ie Test i ng TESTED BY;JH
Date:5/3/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING 7 INC.Fig.No.21:
LIQUID AND PLASTIC LIMITS TEST REPORT
60
Dashed line indicates the approximate /
////,///
/upper limit boundary for.natural soils //////
50 -/O~//
//0'"//~//////
40 f---
//V/
///></
W //0 /~//
E30 /
/-/
(,)///i=/(/)/
::5 /-
//Q.////
20 -//'-/
/'////'0'"
10 ~I-/1 /V/
:--///////1~-f4-/////Y MlrOL MHrOH
V I !I-
10 30 50 70 90 110
LIQUID LIMIT
MAT-ERIAL DESCRIPTION LL PL PI %<#40 %<#200 uses-Clay,very sandy,silty,red 23 20 3 88.6 56.8 ML
Project No.804899 Client:International Uranium Corpomtion Remarks:
Project:Soil Sample Testing _-TestedBy:JH
-Source:Sample No.:RF7-S1
---
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN C-OLORADO TESTING,INC.Figure 31
PARTICLE SIZE DISTRIBUTION TEST REPORT
1 Q1
GRAIN SIZE -mm
20 23
0.001
PL LL
A-4(O)
AASHTO
0.01
ML
USCS
\
%CLAY%SILT
o•
36.1
%SAND
10
!i
7.1
%GRAVEL
100
90
80
70
0::UJ 60Zu:::
I-50ZUJ()
0::40UJa.
30
20
10
0
200 100
%+3"
0
SIEVE
inches
size
3
2
1.5
1
3/4
1/2
3/8
PERCENT FINER
o
100.0
100.0
100.0
100.0
97.3
95.9
95.0
SIEVE
number
size
#4
#10
#20
#40
#60
#100
#200
PERCENT FINER
o
92.9
92.1
90.9
88.6
86.6
83.7
56.8
SOIL DESCRIPTION
o Clay,very sandy,silty,red
><GRAIN SIZE
D60 0.0801
D30
DlO
REMARKS:
o Tested By:JH
><COEFFICIENTS
o Sourye:Sample No.:RF7-S1
Client:International UraniwnCorporation
WESTERN COLORADO TESTING,INC.Project:Soil Sample Testing
Proiect No.:804899 Fiaure 52
ATTACHMENT E
EVALUATION OF POTENTIAL SETTLEMENT
DUE TO EARTHQUAKE-INDUCED LIQUEFACTION
AND
PROBABILISTIC SEISMIC RISK ASSESSMENT
PREPARED BY
INTERNATIONAL URANIUM (USA)CORP.
INDEPENDENCE PLAZA
1050 17TH STREET,SUITE 950
DENVER,CO 80265
EVALUATION OF POTENTIAL SETTLEMENT DUE TO EARTHQUAKE-INDUCED LIQUEFACTION
INTERNATIONAL URANIUM CORPORATION,WHITE MESA MILL
5/6/99
An evaluation of potential settlement due to earthquake-induced liquefaction of tailings at International
Uranium Corporation's White Mesa mill has been performed,and the results are reported below.This
analysis applies to cells #2 and #3 and uses conditions of those cells that existed before May 1999,ore
sieve analyses,calculated average in-place density,seismic analyses by Knight Piesold,and typical
physical property values from the literature.Two analyses were performed using methods applied to the
Maybell UMTRA site by Morrison-Knudsen Engineers (per information supplied by the NRC to IUC).
Method I is the Stress Ratio method of Takimatsu and Seed,19871.This method uses the SPT blow
counts (N)as input for the analysis.No N values are available for the White Mesa tailings,so N values
were estimated (see page 2 of calCUlations)using the grain size properties determined in recent tests by
Western Colorado Testing Inc.and the average in-place density determined by IUC from volumetric
calculations.The N values are conservatively estimated to range from 0 at ground surface to 8 at 35 feet
depth,values consistent with very loose to loose fine grained (relative density 0 to 35),non-plastic soils
according to Terzaghi et ai,19962,and NAVFAC DM-7,1971 3 According to ~E's UMTRA Design
Procedures,Chap 11,App.11 B,Fig 11 B-2,this is conservative because under field conditions the
minimum relative density should be about 36%.For additional conservatism,it was assumed that the
tailings are completely saturated below ground surface.The results of this calculation,tabulated on page
A2,indicate that the maximum settlement should be about one foot in 35 feet of tailings and that most of
that settlement originates in the upper 15 feet.According to Borns and Mattson,19994,an earthen cover of
the type used on tailings impoundments should not exhibit cracking in response to rapid settlement until
differential settlement exceeds about 0.75%.At White Mesa,estimated differential settlements are not
significant (less than 1%)over the tailing cell with the possible exception of the inslope areas where
differential settlement,expressed as vertical feet of settlement over horizontal distance,could exceed 0.01
(1 %)in the upper 5 feet and between 10 and 20 feet of the inslope depth.Differential settlements would be
accommodated initially by plastic deformation of the cover,then by cracking,so not all of the differential
1 Takimatsu,K.and H.B.Seed,1987;"Evaluation of Settlements in Sands Due to Earthquake Shaking",
Journal of Geotechnical Engineering,ASCE,Vol.113,No.8
2 Terzaghi,k.,RB.Peck,and G.Mesri,1996;Soil Mechanics in Engineering Practice,3rd Edition,John
Wiley &Sons
3 Dept.Of Navy,Navy Facilities Engineering Command,1971;Design Manual Soil Mechanics,
Foundations,and Earth Structures,NAVFAC DM-7
4 Borns,D.And E.Mattson,1999,"Simulated Subsidence of the Monticello Cover",Sandia National
Laboratories Draft Report,3/10/99
settlement would be expressed by offset along fractures However,If It is conservatively assumed that all
differential settlement is expressed in fracture offset,then the largest offset would be about 0 175 feet (21
inches)about 30-45 feet from the top of the cell inslope.It is more likely that this differential settlement
would result in some cover flexure or,at worst,several small fractures with offsets totaling not more than 2.1
inches.
The other method used for analysis,MKE's Method II,is from the Committee on Earthquake Engineering,
19855.It is based on evaluating the shear strain in the tailings caused by an earthquake.It relies not on N
values but on shear wave velocities and shear modulus!maximum shear modulus ratio,both of which are
estimated based on empirical data.This removes the effect of uncertainty associated with the lack of site-
specific in-place tailings characterization.Using the same assumptions as in Method I,the estimated
maximum settlement from liquefaction is 0.0581 feet,or 0 7 inches.The associated differential
settlements are all well below the 0.75%threshold of concern for cracking of the cover.
The differences in settlement estimates of the two methods are substantial,about 17.5 times.However,the
two estimates probably provide bounding limits for the range of likely liquefaction-induced settlement.If the
Method I results are used,then the following consequences of the design earthquake liquefaction would be
conservatively predicted:
maximum settlement -1.015 feet in the deepest part ofthe cell,up to 0.4 feet along the cell margins over
the inslope
maximum differential settlement -2.7%within about 15 feet horizontal distance of the top of inslope,
1.2%to 0.8 %between 30 and 60 feet from top of inslope
impacts on cover -settlement of cover in response to tailing settlement,with maximum flexure over
the upper half of the inslopes,where some cracking is possible with offsets less
than two inches and probably less than one inch
5 Committee on Earthquake Engineering,Commission on Engineering and Technical Systems,National
Research Council,1985;"Liquefaction of Soils During Earthquakes",National Academy Press
2
EVALUATION OF LIQUEFACTION POTENTIAL
WHITE MESA MILL TAILINGS ------
;
Tailing Samples Parameters
from tests by Western Colorado Testing Inc.,April 1999
Sample #USCS LL PI Max.Dry Optimum %-#200
Density Moisture
pcf %
C2-ST1 SM NP NP 109.2 15.2 24.1
C2-TS2 ML 29 29 103.5 20.8 82.7
C2-TS3 SM NP NP 110.4 16.0 32.7
C2-TS4 SM NP NP 107.4 16.8 32.2
C3-TS1 ML 24 23 105.7 16.0 60.8
C3-TS2 SM NP NP 105.4 15.3 23.0
ave.for SM NP NP 108.1 15.8 28.0
ave.for ML 26.5 26 104.6 18.4 71.75
i I :
!I
,,i i
Seismic Parameters i !
!,i!
!i ,,
Design Life 1000 yrs ifrom Knight Piesold (Julio Valera),4/23/99
Return Period :10000 yrs from Knight Piesold (Julio Valera),4/23/99 I
Peak Horiz Acceler.0.18g :from Knight Piesold (Julio Valera),4/23/99 i
Seismic Coeff.[0.12g I(DOE,1989,Technical Approach Document,
[Revision II,Uranium Mill Tailings Remedial !!
rAction Project)I i i
I i !
Tailing In-place Characteristics !i !,,
i i i i I
From mill screen analyses:!!i
i I I i,
iOre i !I i
iBlanding #4 iAnehutz #1 Hanksville #2A'Hanksville #1 Average i
%-#200 27.2-30.7 37.61 23.2 29.7,
i I ,,
I i I
Ave.Dry Unit Wt.of all tailings,in pcf =I 86.31 from IUC volumetric cales.I
i
From this value and ave.%-#200,ave.unit wts of sand and slimes would be:i
I I II
',Ave.pef =\86.31 =SDpcf·.703 +SLpef·.297 II
Page 1
EARTHQUAKE~NDUCEDSETTLEMENT METHOD I
per Taklmatsu and Seed
Parameters:
Tav =ave cyclic shear stress from earthquake,psi
Po =total overburden pressure at depth considered,psi =(86,31 +n'62.4),depth =(86,31+0,478'62.4),depth =1161 pet/tt'
Po'=effective overburden pressure at depth considered,psi =Po -depth'62.4
rd =stress reduction factor (1,0 at surface to 0,89 at 35')per Kovacs and Solomne,1984
am"=peak acceleration at ground surface =,18g
N,=SPT N value normalized to an effective overburden pressure of 1tsf
and effective energy delivered to drill rods of 60%of theoretical
free-fall energy
=Co'N
N =SPT N value
Co =correction factor based on effective overburden pressure at depth of SPT count
Assumptions:
1)N values are assumed to increase with depth,from 1 to 8
2)Tailings are saturated to ground surface
Estimation of N Values:
(see page 3)
No SPT tests have been performed,so N values are estimated using physical properties of samples,average in-place dry density,and
standard soil mechanics references,
1)From NAVFAC DM-7,Fig,3-7,relative density ranges from 0 to 35%for SM to ML soil with dry density of86,31 pcf,and corresponding
N values range from 1 to 8 (Fig,4-2),
2)From MKE UMTRADesign Procedures,Chap,11,App,11B,Fig,11B-2,minimum relative density under field conditions is about 36%,
corresponding to N,=O,and maximum relative density (100%)corresponds to N,of about 47,
3)Based on 1and 2above,it is reasonable to estimate thatthe relative density ofthe SM/ML tailings in-place is at least 35%and that the
N values range from 1 at the surface to 8 at35 feet depth,
N,=Co'N
N,=corrected SPT value
N =recorded SPT value
Co =correction coeff,
=0,77log10 (20/(P,'/2000»
z N P'Cn N,0
5 1 269 1,67 1,67
10 2 537 1.44 2,88
15 3 806 1,31 3,92
20 4 1074 1,21 4,84
25 5 1343 1,14 5,68
30 6 1611 1,07 6,44
35 8 1880 1,02 8,18
Calculation of Settlement:
shear stress ratio Tav/Po'=0,65'(arnnlg)'(PJP,')'rd
Depth,z N,Po P'PJPo'rd Tav/Po'Vol.strain Thickness Settlement0
ft psf psf ok (1)of Laver,ft ft
5 1,67 581 269 2,162 1 0,2530 8 5 0.4
10 2,88 1161 537 2,162 0,98 0,2479 5 10 0,5
15 3,92 1742 806 2,162 0,96 0,2428 4,5 15 0,675
20 4,84 2322 1074 2,162 0,95 0,2403 4 20 0,8
25 5,68 2903 1343 2,162 0,93 0.2352 3,6 25 0,9
30 6.44 3483 1611 2,162 0.92 0.2327 3,2 30 0,96
35 8.18 4064 1880 2,162 0.89 0,2251 2,9 35 1,015
(1)from Fig 6,Tokimatsu and Seed,1987
Differential Settlements over Cellinsiopes:
Slopes are 3H:1V
Horizontal Depth of Settlement Differential
Distance Tailings ft,Settlement,
over slope over slope vertical ftl
ft.ft,horizontal ft,
15 5 0.4 0,027
30 10 0,5 0,007
45 15 0,675 0.012
60 20 0,8 0,008
75 25 0,9 0,007
90 30 0,96 0,004
105 35 1,015 0,004
Page A2
CORRELATION BETWEEN RELATIVE DENSITY AND ABSOLUTE DRY DENSITY OF SANDS
By AKr(
5/6/99
after Terzaghi et ai,1996,Fig 44.1
Relative Dry Density
Density pef Mg/m3
49.5 99.89 16
76 106.1 17
100 112.4 1.8
Dry Density VS Relative Density for Sand
120 .,------------------..,.-----------,
115 !1 I------------------------------
110-u
Co 105
i-.~100
~,.,95
C
90 - - --- --;-- - - - - --:- - - - - --,- - - - - --1-- - - - - -I"- - - - -
85 ______-'-....i I L L _
1201008060
Relative Density,%
4020
80 .1..----_----------r----_------I
o
after NAVFAC DM-7,1971,Fig.3-7
Relative Dry Dry
Density,%Density,pef Density,pef
SM soils ML soils
o 88 79
25 92 83
50 97 88
75 103 93
100 109 98
DRY DENSITYVS RELATIVE DENSITYFOR SM AND MLSOILS
I~SMSOIISI
--lB-ML 50115 I
110100908070
---~---,----.---~---
605040302010
I
'1 I ...!1 !-1 i 'J _
I I I I I
I I
___:1 I .J ..!.!....1 :1 ....!_
I I I i
I
I- - -1-- --1-- --J - - -"I - --- ---
I
I
I I I I J I
---:----1---I - - -"1 - - -T - - -r - --:----,-- --I - - -
120
110-u 100Co
i-'iii 90c"C>-80C
70
60
0
Relative Density,%
Based on these relationships,the average dry density of 86.31 pcf corresponds
to relative density in the 0%to 40%range,depending on the amount of silt vs
sand.Therefore,N values would range from 1 at ground surface to 8 at depths
of 35-40 ft.
Page A3
EARTHQUAKE·~NDUCED SETTLEMENT
per Committee on Earthquake Engineering,1985
METHOD II
Parameters:
T =peak shear stress from earthquake,psi
P,=total overburden pressure at depth considered,psi ==w'z
rd =stress reduction factor (1.0 at surface to 0.9 at 30',0.8 at 40')
S =strain
g =acceleration of gravity,ftIsec/sec
a =peak acceleration at ground surface =0.18g
w =unit weight.pcf
Z =depth,ft.
d =mass density
G =shear modulus
GIGmax =modulus reduction factor for strain
V,=shear wave velocity,fps
pr =Poisson's ratio
EA =axial strain
h =thickness of layer,ft.
dh =settlement in layer,ft.
Assumptions:
1)Tailings are saturated to ground surface
2)G/Gmax =0.80
3)V,=3000 fps,per Committee on Earthquake Engineering,1985
4)pr=0.5
5)Shear wave travels path that is 45 degrees from vertical,so E'atenol =pr ° EA
Calculations:
S =T/G =«a/g)"Poordl/G =aOzO(w/g)"rd IG
=(w/g)°V,2
d==wig
S =aOzOdOrd IG =
=aOzord I (V/°0.80)
aOzO(Gma,IV,2)"rd IG =
=1.25°aozord I V/
aOzord I (V/°(GI Gmax))
=1.25°aozord 1(300)2
=1.25°(0.18*32.2)°zord 190000 =1.25°(0.18°32.2)°zord 190000
S =0.0000805 °zord
rd =1.0 at surface to 0.9 at 30',0.8 at 40'(Kovacs and Solomne,1984)
EA =S/(1 +pr)=dh/h
dh =0.00008°zord °h/1.5
Settlements:
Depth,z rd Thickness Strain Axial Strain Settlement
ft of Layer,h,ft S EA dh,ft
5 1 5 0.0004 0.00027 0.0013
10 0.98 10 0.0008 0.00052 0.0052
15 0.96 15 0.0012 0.00077 0.0115
20 0.95 20 0.0015 0.00101 0.0203
25 0,93 25 0.0019 0.00124 0.0310
30 0.92 30 0.0022 0.00147 0.0442
35 0.89 35 0.0025 0.00166 0.0581
Differential Settlements over Cellinsiopes:
3HSlopesare:1V
Horizontal Depth of Settlement Differential
Distance Tailings ft.Settlement,
over slope over slope verticalft.l
ft.ft.horizontal ft.
15 5 0,0013 0,0001
30 10 0.0052 0.0003
45 15 0.0115 0.0004
60 20 0.0203 0.0006
75 25 0.0310 0.0007
90 30 0.0442 0,0009
105 35 0.0581 0.0009
PageA4
Knight Piesold
Memorandum
Date:April 23.1999
To:Mr.Harold R,Roberts
From:Julio E.Valera
Re:Probabilistic Seismic Risk Assessment
Int~m3tlOmll',3nlUl11 Corpor3tlOn
As stipulated by the Nuclear Regulatory Commission (NRC)in their "Draft Standard Rel'iew Plan
for the RevieH'ofa Reclamation Plan for Mill Tailings Sites under Title 11 ofthe Uranium Mill
Tailings Radiation Control Act",(UMTRCA)-NUREG-1620,a probabilistic seismic hazard
analysis (PSHA)may be considered as an acceptable method to a deterministic maximum credible
earthquake (MCE)analysis for establishing the peak horizontal acceleration (PHA)for a site.
The NRC draft standard (Section 1.4)states the following:"An exceedance mlue 110 greater than
10'"per year should be used in determining the PHAfor the site.This la-oJ mlue represents a 1 in
10 chance ofthe site exceeding the PHA in a 1,000-year period,which is appropriate for a 1,000
-year design life ",Based on this understanding,Knight Piesold has performed a simplified seismic
risk assessment for lUC's White Horse Mesa Uranium Mill Tailings Facility to establish the
probabilistic PHA for the site.The simplified PSHA has made use of probabilistic seismic hazards
maps recently developed for the contiguous USA as part of a joint effort by the Federal Emergency
Management Agency (FEMA),and the U.S.Geological Survey (USGS)to develop new maps for
use in seismic design.A detailed description of the development of the maps is contained in the
USGS Open-File Report 96-532,National Seismic Hazards Maps:Documentation.June 1996 by
Frankel et al.(1996).The maps provide probabilistic ground motion design parameters with 2%,
5%and 10%probabilities ofexceedance in 50 years,corresponding to recurrence intervals of .:1-75.
975 and 2500 years,respectively.The maps were developed using a soft-rock site as the reference
site condition which is reasonably representative of the conditions at White Horse Mesa mill site.
A probability of exceedance of 10%for a 1,000 year design life as stipulated by the NRC
corresponds to a recurrence interval of 10,000 years.A similar probability of exceedance for a 200
year design life corresponds to an earthquake recurrence interval of 2000 years.
The latitude and longitude for the White Horse Mill are 370 35'N,and 1090 30'W,respectively,
Using these coordinates,values of PHA were obtained from the USGS seismic hazards maps at the
three recurrence intervals previously mentioned.These are plotted in the accompanying figure
versus return period.A best-fit straight line and curve were fitted to the data to extrapolate to larger
return periods.The following PHA values were obtained for the White Horse Mesa Mill site:
Design Life (yrs)
200
1,000
C:\1626B-WHMlPSHAmemo,wpd
Return Period (yrs)
2,000
10,000
PHA (g)
0.11
0.18
Knight Piesold
1
:'-1r.Harold R.Roberts
Probabilistic Seismic Risk Assessment
April 23.1999
Thus based on extrapolation of the USGS data.a PHA equal to 0.18g would correspond to the
10.000 year event for the site.
In Section 1.4.3 of NLJREG-1620 the NRC states that in order"to assess potential site ground
motion from earthquakes not associated with known tectonic structures (i.e.,random orfloating
earthquakes),the largestfloating earthquake reasonably expected 'rvithin the tectonic province (110
smaller than magnitude 6.2)should be identified".They also state that a site-to-source distance of
15 km should be used for floating earthquakes within the host tectonic province in a dterministic
analysis.
In addition to the PHA,it is necessary to establish the magnitude of the corresponding earthquake
in order to conduct a liquefaction assessment of the tailings impoundment.An estimate of this
magnitude was obtained using the acceleration attenuation relationship developed by Campbell and
Bozorgnia (1994)which is considered by the NRC as an acceptable relationship.The
attenuationship relationship used for this study assumed strike-slip faulting and soft rock site
conditions.A site-to-source distance of 15 km was also used with a PHA of 0.18g to establish the
corresponding magnitude.By coincidence a magnitude of 6.2 was obtained.
Thus based on this simplified seismic risk assessment,a magnitude 6.2 earthquake producing a PHA
of 0.18g at the mill site represents the 10,000 year event which has a 10%probability ofexceedance
during a mine life of 1000 years.
c:\1626B-WHMlPSHAmemo.wpd
White Mesa
Ground accelerations from Frankel et al.(1996)
return
period,yrs
475
975
2500
accel.
0.045
0.07
0.12
i -!~1 i ;,.
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o 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000
Return Period,yrs
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Cl 0.18
r::.-
0 0.16:;;
III....Q)0.14"iuu<l:0.12
"Cr::.
:::J 0.10....
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I /i I !I !',I IiIIIi !i,1 ,i
i !!I !I
i I I Ii
I i I 111/iiiIIiii :i i i I I I I ~:I I
I !
!I
i i I I I I !:
:I I i I I,,iIIII:I Ii oJ :,iI,
I I I i I
I I I i :
II I i'!,iiI:
!,!I i I !,I I I i
i I I
I i
i
i II
I i ,1I I ,
I I I I !i i ,,I
!I I I I I
I
I !I VI I
I I II!I I I I,I ,
!,I ,i i ,I,
0.2
Cl 0.18
C0 0.16:;;III....Q)0.14"iuu<l:0.12
"Cr::.
:::J 0.10....C)
ro 0.08-r::.0N 0.06';:
0::I:0.04..1Il:IIIQ)c..0.02
o
1 10 100 1,000 10,000
Return Period,yrs
White Mesa Mill -Soil Testing,tailings samples
WESTERN
COLORADO
TESTING,
INC.
529251/2 Road,Suite 8-101
Grand Junction,Colorado 81505
[phone] •Fax [phone]
May 4,1999
WCT #804899
International Uranium USA Corporation
Independence Plaza,Suite 950
1050 17th Street
Denver,Colorado 80265
SUbject:Soil Sample Testing
As requested,we have completed the soil laboratory work for
International Uranium USA corporation.The testing performed
included the following:
21 Sieve Analyses
21 Atterberg Limit Tests
21 Standard Proctor Tests (ASTM 0698)
6 Hydrometer Tests
6 specific Gravity Tests
Data sheets are included for each test except for the specific
gravities.The results of these are shown below:
Sample Avg.Bulk Avg.Bulk Specific Apparent Absorption
Soecific Gravity Gravity (SSm Specjfic Gravity Percent
C2·TS1 2.337 2.468 2.673 5.372
C2·TS2 2.137 2.392 2.868 11.926
C2·TS3 2.157 2.359 2.705 9.396
C2·TS4 2.265 2.432 2.721 7.402
C3·TS1 2.456 2.562 2.746 4.294
C3·TS2 2.349 2.464 2.655 4.900
Page 2
International Uranium USA Corporation
WCT #804899
May 4,1999
We have been happy to be of service.If you have any questions
or we may be of further assistance,please call.
Respectfully Submitted:
WBSTBRB COLORADO TESTING,INC.
WM.Daniel smith,P.E.
Senior Geotechnical Engineer
MOISTURE-DENSITY RELATIONSHIP TEST
1 12 1\,
1\,
1 10
~.,
~
...~~,
~...~~....1..Jl ~,()a.108 l/,~.~,
>-...,"\\.-~(/l -,c
Q)I\.
'0 \\
>-106 TI...~0 --,"l \
1\,ZAV for
104 Sp.G.=
2.65
102
10 12 14 16 18 20 22
Water content.7-
Test spec i t i co t ion:ASTM D 698-91 Procedure A.Standard
Oversize correction appl ied to each point
Elev/Classification Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO 1.40 i st.No.4 No.200
-N/A %2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density -109.2 pet 109.2 pcf C2-STl
Optimum moisture =15.2 ~15.2 %
Pro j ec t No.:804899 Remarks:
Project:International Uranium Corporation SUBMITTED BY:CI ient
.--.
Locat ion:Soi I Sampl e Test i ng TESTED BY:JH
Date:4/27/99 .
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING,INC.1 ,
Fig.No.I
PARTICLE SIZE DISTRIBUTION TEST REPORT
....Po~.,
~
Q,......
~
1 0.1 0.01 0.001
GRAIN SIZE -mm
%SILT %ClAY USCS AASHTO PL LL
19.3 4.8 8M A-2-4(0)NP NP
III !I
.
~..'i\:
,j
,,.
!i
\1
i1j
.,..
\:
75.9
%SAND
10
0..0
%GRAVEL
II
.Ii..
100
90
80
70
a::UJ 60Zu::
l-SOZUJua::oiOwa..
30
20
10
0
200 100
%+3"
0
SIEVE
mc:t-
size
3
2
1.5
1
3/4
1/2
3/8
PERCENT FINER
o
100.0
100.0
lOO.e
]00.0
100.0
100.0}oo.e
#4
#10
##W
#40
##60
#100
##200
o
100.0
100.0
98.7
94.1
77.5
46.8
24.1
PERCENT FINER SOIl DESCRIPTION
o Sand,silty,gr&yI1lrown
GRAIN SIZE
~.186
0.100
0.0241
REMARKS:
o Teaod by.JH
><COEFFICIENTS
2.25
7.74
o Soun:e:Sample No.:C2-STI
Ciri IntanatioDal Uranium Corpcntion
Project:Soil Sample T-m..WESTERN COLORADO TESTING.INC.---e
IProl8ct No.:804899 32
MOISTURE-DENSITY RELATIONSHIP TEST
104
"'i'...
",.""""'III ......~
[,;,..~i'..ZAV forl/'-Sp.G.=
102 ~"2.65/,
~\
J ,,\'+-/\0a.100 j.~,.>.....,.-
(J)/c
Q)
"0 ~
>.98
~J0~
96
94
17 18 19 20 21 22 23
Water content,7-
Test specification:ASTM D 698-91 Procedure A,Standord
Oversize cor rect ion appl ied to each point
Elev/C I ass i fica t ion Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO 1.40 i st.No.4 No.200
N/A %2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry densi ty -103.5 pct 103.5 pct C2-TS2
Optimum moisture =20.8 ~20.8 %
Project No.:804699 Remarks:
Project:International Uranium Corporation SUBUITTED BY:CI i ent
~
Locat ion:Soi I Samp I e Test i ng TESTED BY:JH
Date:4/27/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING,INC.Fig.No.2
PARTICLE SIZE DISTRIBUTION TEST REPORT
.Ii
:.li.li~~i~.li :I 5!ai j ~~100r--=----rr;~-;:-,.-::-p~-;;m.,..;-r--,--v--...,.~..,Q;;:;::~~.,:lo.!r~.::....::jm=r-n-r-r-.,--~:r,:'Ir!r-r--;---,
9Qj---,--tt++-t-+-r.-+--+t---rl+H'--H+-+--+--HH++-+--+-h--t----<--::llitH-m-l--hl---t--+H+++-+-+--+--J
8Of----,--++++++-+-+..,.--.f;--""7-I+t+I-HH--+--+--+H+++-+---r--+---+t-H'lillH--t-t---t--+H+++-+-+--+-~~,
701-'--tt++++-+-+..,.--.fi---'--i+hI-HH--+--+--+H+++-+---H--+--'--++-t+t-H-~t---t--+H+++-+-+--+-~~,~
W60!--'"-t+ti+++-t-+-'--it---+-IIit+-H-H-+-+--+--+ttH--H--+--H--t--.--++++-H-+-++--+---++-i+t-t-i-+""7-I~--1
Z \u::
!zSOt-i'-++-H+++-+-++-ti--+-!+t+H-H--+--+--+t++-H--+---+-+-t--+--+t-t+t-H-+-t--1H---++-i+t-t-i-+""7-I---1w,
offi40t----'"-++++++-+-++-tt---+-I+t+H-i!H--t--+--+H-+++-+-+-;--+-~-+ttH-H--t-t---I--+H-t-+-+-+-+--I---1~~
3Ot-i'-tt+++-+-+-++-tt---'--i+t-HH-i+-+-+--+--+t++++-+--+--+--+--+ttH-H--t-I-+t--+H-t-+-+-+-+--I---1
2OH-+t-H-H-+-+-+-+--f+--+--1fH+t-+-i++-I---+---tH+++-+t-h-l----i---+t++t-H-+--f-+--\--+H++-H-+--j~-f
o
%+3"%GRAVEL
flO
%SAND
17.3
%SILT
70.2
%CLA'f
12.5
USCS
ML
AASHTO
A-4(O)
PL LL
29 29
SIEVE
incha
size
3
2
1.5
1
3/4
1/2
3/8
><
><
o Sow't1e:
PERCENT FINER
o
100.0
100.0
100.0
JOO.O
100.0
100.0
lOO.{)
GRAJNSIZE
C.C264
0.0170
COEFFICIENTS
SIEVE
~
#4
#10#2Q
#40
#60
#100
#200
PERCENT FINER
o
100.0
100.0
99.9
99.4
97.8
94.3
82.7
Sample No.:C2-TS2
SOILDEscRIPTION
o SiJt,clayey,'*Ildy,gray
REMARKS:
o ToADd By:JH
Cient:IntanationalUraniumCorporation
WESTERN COLORADO TESTING.INC.Project:Soil Sample Testing
IProi8ct No.:804899 33
MOISTURE-DENSITY RELATIONSHIP TEST
112 !\,
~
-,
110 ~~~
~I',
j'"~~
II',,
....V ~~
u l/\1a.108 l/,~.l>.
+'\,.-w ,c ~Q)u \
>.106 !\'-!\.0 •\
r\,
104 '\
\.ZAV for
\Sp.G.=
!\.2.65,
102 \
12 14 16 18 20 22 24
Water content.%
Test spec i fica t i on :ASTM D 698-91 Procedure A.Standard
Oversize correction app lied to each point
Elev/Classification Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Mo i st.No.4 No.200
N/A %2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density -110.4 pct 110.4 pet C2-TS3
Optimum moisture =16.0 ~16.0 %
-.
Project No.:804899 Remarks:
Project:International Uranium Corporation SUBtAITTED BY:CI ient
Locat ion:Soi I Sample Testing TESTED BY:JH
Date:4/27/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING,INC.Fig.No.3
PARTICLE SIZE DISTRJBUTION TEST REPORT
9Of---.-+++-H-H~_+____t.;..-+-ttt+lH-lH-_t__+-_+H+++-+-*-t-....>-----++++-H-+-t-+--+t++++-+_+--I---I
,
80 I--+-H+-H--l-f-+-+-t;...--:-+tt-H-H-j-t--+--+--+H++++-+-,""1--'-~H-+-H-1-+-+--+--f-iH+++-+-+--+----I
\i701-'-++++++-+;-f-----i-----'--1cit+H-1H--+-;-f---i-t+t++-+--t-'---+\-----++-H-+-t-+-r-+--+t++t-+-+-+--l---!~\w80I-+-+-Hi-H-H~~+---i--j+t+lH-lH-_t_~--+t++++-+t--+--+_I_-tr--+++-H+-H--j-t-_+_-+H+++-+-+___f-__1~~1-+-m-H-H~_+____t+--+-ttt+lH-l++_t_-+--+t++++-+-++-_I_....;.\,-\-+'H-+tH-t-++-+--+H+++-l--j--l----l~40~-++++++4~~+--"";'!-H+-!-J-H-+--+-f--+---++1++++I-+--'----.f--i-~-l;~-H-+-+-+--+--l-H-+++-+-+--+---t
a.
o
%+3"%GRAVEL
0.0
%SAND
67.3
%SILT
23.2
%CJ.AY
9.5
USCS
8M
AASHTO Pl LL
A-2-4(0)NP NP
SIEVE PERCENT FINER SIEVE PERCENT FINER SOIL DESCRIPTION
~0 rw::-0 o SIIId,silly,grayJtrown
Ilze
3 100.0 ##4 100.0
2 100.0 ##10 100.0
1.5 100,0 #20 98.9
1 100.0 J#4O 96.4
3/4 100.0 #60 86.9
1/2 100.0 #100 59.6
3/8 100.0 #200 32.7
><GRAlNSIZE REMARK-8:
Deo -0.151 o TesIecl By:JH
D3Q 0.0425
°10 0.0084
><COEFFICIENTS
Cc 1.42
Cu 18.03
o Sounle:Sample No.:C2-TS3
aent:International Uranium-Corporatioo
e-o-t-Soil Q.......Jc T-moWESTERNCOLORADOTESTING~INC.r,...,-.~-
IPnllect No.:804899 34
MOISTURE-DENSITY RELATIONSHIP TEST
108 1\
~
I"""-\
1./~"-
106 j ,\
J 1\I\.
",\
I~~\.
\,
.....~\ua.104 ~~
.\\>-.....1.-I\.rn ,c
Q)
\J 1\r\.
>-102 ,-.,
L..
0 .~
~,
100 '\
"-ZAV for\Sp.G.=
\2.65,
98 '\.
14 16 18 20 22 24 26
Water content,%
Test spec i fica t i on :ASTM D 698-91 Procedure A,Standard
Oversize correction app lied to each point
Elev/Classification Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Moist.No.4 No.200
N/A %2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density -107.4 pct 107.4 pcf C2-TS4
Optimum moisture =16.8 %16.8 %
Proj ec t No.:804699 Remarks:
Project:International Uranium Corporation SUBMITTED BY:CI j ent--Locat ion:Soi I S.omp I e Test i ng TESTED BY:..JH
Dote:4/27/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING,INC.Fig.No.4
PARTICLE SIZE DISTRJBUTION TEST REPORT..i .&.&.&,;.5 ~S t:!it ~~a i i 8 $~'"it ;;;
100 i1\
90 1\
80 I i'70 \1a::w 60Z \u::
l-so iZ \w .I0a::40w ~a.
0.0010.01
1 :j j;.
j
1 0.1
GRAIN SiZE -mm
10200100
o ,
3Oh-+ffi++-.JH.+-tf-HH-+++---l!-i-+-+--+ttr-++++-I---+++-mm~-l--l----j-l-H-H--~--J--J,~
20 1-+-++++++-fj-+--;---ff--...;---f+H-H-H---+--+---t-H-t-+t-t--H--t--t--+t-H-H--f-H\t-+--+++++t-+-+--+---I
10H-++-H-H-H-+-+-+;--+-t+H-H+-+-t--+---+H+-H--+-++-+--+--++++-H-+-l--~-+H+++-+-+-t----t\..~~~--4-...,'V
%+3"%GRAVEl %SANO %SILT 'l{,CLAY uses AASHTO PL LL
o O.Q 67.8 28.7 3.5 8M A-2-4(O)NP NP
SIEVE PERCENT FINER SIEVE PERCENT FINER 'SOIl DESCRIPTION
~0 1'IUIT1bIIf 0 o Sand,silty,graytbrown
size -3 100.0 #4 100.0
2.5 100.0 #10 99.8
2 100,0 "20 99.4
1 100.0 #40 97.8
3/4 100.0 #60 85.4
1/2 100.0 #100 54.4
3/8 lOO..e "200 32.2
><GRAlNSlZE REMARKS:
°eo Q.l64 o TilllkId -By:JH
D3()0.0376
°10 0.0189
><COEFFJCJENTS
Cc 0.45
Cu 8.69
o Source:Sample No.:C2-TS4
an:IntanationalUnmi1D:n-Qxporation
WESTERN COLORADO TESTING,INC~-Projed:Soil Sample Testing
IProiect No.:804899 35
MOISTURE-DENSITY RELATIONSHIP TEST
108 ~,
\
1\
106 \
~...................~,
~Ill""r\.1\
l/I\.,ZAV for
'+-l/0 ..Sp.G.=Q.104 V ,2.65.~""->,.....II".-
(/)~cQ)
'0 ~i"""
>,102 .,~L-a
100
98
10 12 14 16 18 20 22
Water content.%
Test spec i fica t i on :ASTM D 698-91 Procedure A.Standard
Oversize correct ion app lied to each point
Elevl Classification Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Moist.No.4 No.200
N/A %2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density -105.7 pcf 105.7 pct C3-TS1
Optimum moisture =16.0 %16.0 %
Project No.:804899 Remarks:
Project:International Uranium Corporation SUBMITTED BY:CI ient-Locat ion:Soi I Samp Ie Test i ng TESTED BY:JH
Date:4/27/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING.INC.Fig.No.S
PARTICLE SIZE DISTRIBUTION TEST REPORT
;\i !b....
.Ii i .Ii .Ii.Ii si si ~.Ii 51 :..
100
90
80
70
0::W 60Zu::
t-50ZWU0::..aW0-
30
20
10
0
200 100
,
1 Q1GRAlNSIZE-mm
,
0.01 0.001
o
%+3"%GRAVEL
0.0
%SAND
39.2
%SILT
60.3
%CLAY
0.5
USCS
ML
AASHTO PL LL
A-4(O)NP NP
SIEVE
incIIM
slzII
3
2
1.5
13/4
1/2
3/8
><
><
PERCENT FINER
o
100.0
100.0
100.0
JOO.O
100.0
100.0
100.0
GRAlNSlZE
0.6738
0.0364
0.0166
COEFFICIENTS
1.08
4.45
SIEVE
IlIIIllb«....
#4
#10
1120
##40
H60
#100
11200
PERCENT FINER
o
100.0
100.0
99.9
99~1
96.3
87.8
60.8
SOIl DESCRIPTION
o Silt,SIDdy.ilrown
REMARKS:
. 0 TOIkd By:JH
o SouIce:Samj>le No.:C3-TS1
CIont Jntanational Unmium-corporation
WESTERN COLORADO TESTING.INCA PRlject:Soil Sample Testing
..Proiect No.:804899 36
MOISTURE-DENSITY RELATIONSHIP TEST
108 ~
~
106 \.
~
....-\--.
~~\
",,ZAY for
<0-~\u Sp.G.=Q.104 ,J 2.65.~~>....,~!\.-
(/Jc JV"0 ,
>.102 "I-
0 ~,...
100
98
10 12 14 16 18 20 22
Water content.7-
Test spec i fica t ion:ASTM D 698-91 Procedure A.Standard
Oversize correction app lied to each point
Elev/Classification Nat.Sp.G.LL PI %>%<
Depth USCS AASHTO Mo i st.No.4 No.200
N/A %2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density -105.4 pct 105.4 pct C3-TS2
Optimum moisture =15.3 %15.3 %
Project No.:804899 Remarks:
Project:International Uranium Corporation SUBMITTED BY:CI ient--Locat ion:Soi I Sample Testing TESTED BY:JH
Date:4/27/99
MOISTURE-DENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING.INC.Fig.No.6
PARTICLE SIZE DISTRIBUTION TEST REPORT
0.0010.01
!i
,:
,""",','\
"""~\.
'\',i 1!i
1 0.1
GRAIN SIZE -mm
~i ~~~~~~s S it..
100
90
80
70
0::W 60Zu:
I-50ZW00::.ww !Q.
30
20
10
0
200 100
%+3"%GRAVEL %SAND %SILT %CLAY USCS AASHTO PL lL
o 0.0 77.0 16.9 6.1 8M A-2-4(-o)NP NP
SIEVE
~
lim
3
21.5
1
3/4
1/2
3/8
PERCENT FINER
o
100.0
100.0
lOO.O
100.0
100.0
100.0
100.0
SIEVEn:-
#4NIO
N20
#40N60
Nl00
N200
PERCENT FINER
o
100.0
99.9
99:0
94..6
78.1
46.9
23.0
SOIL DESCRIPTION
o &lid,silty,gr&yI1lrown
><GRAlNSlZE
0.185
0.102
0.0260
REMARKS:
o TCIliIld By:JH
><COEFFICIENTS
2.16
7.12
o 8ouIee:SampleNo.:C3-TS2
'CIenI:Imanatiooal-unmi\DnC«poration
0...0.....Soil Sample T-mnWESTERNCOLORADOTESTING..INC..r,.,,-.-
!Proiect No.:804899 37
Tailings Cell 2 -Dry Density Calculation
Cell 2 -Original Design Volume
2,380,000 tons @92 dpcf
Design change to east end -+5%
Total as built volume
Remaining storage volume
Total Tailings to Date
As ofOctober 23,1989
Cabot
On-Site Waste
=
=
1,916,264 yd3
95,000 yd3
2,011,264 yd3
<23,000>yd3
1,988,264 yd3
2,299,708 tons
12,000 tons
5,000 tons
2,316,708 tons
2,316,708 tons
1,988,264 yd3 =86.31 dpcf
TO:
FROM:
DATE:
SUBJECT:
Bill Deal
Shannon Clark
June 25,1997
Cell 3 Calculated Capacity Left
I was asked by you,to find the original capacity ofCell 3 and the capacity we have left to fill.
In the Environmental files I found where John Hamrick had listed the cells and capacities and ,
offthe 19 C's had calculated the from inception tons deposited to each cell.
Cell 2
Cell 3
as ofOctober 23,1989.
2,299,708
1,249,000 (+600,000 tons =License Amendment)
I then went to Gary Richards to find the dry tons fed to the mill to date offof the 19C report
Fed to the mill,inception to-date,is 3,757,344 tons.We have produced 14,050 tons of
Yellowcake and 16,200 tons ofVanadium.
3,757,344
14.050
3,743,294
-16.200
3,727,094
-2.299.708
1,427,386
2,091,717
-1.427.386
664,331
Dry tons fed to mill
YC produced in tons
Tons to tails
Vanadium Produced
Tons to tails
Tons deposited into Cell 2
Tons in Cell 3 at this point
Available tons in Cell 3 at time of construction
Tons deposited into Cell 3 as ofnow
Tons 01 space left in Cell 3 (in theory)
This calculates out to be 68%full.
White Mesa Mill -Screen Analysis of Ore Feed to Leach
Table 5·e
",.
{
I
I
Grind condH1ons:
Rod mill
Rod charge
Ore charge
%solids
Time
Screen Analysis of Feed Ore to Leach
7-5/8"diam x 9-1/2",steel.ribbed,85/90 rpm
8.9 kg
1.00 kg,minus 6-mesh
50
3 min
I
I
I
I
1(.'"
I
I
...
Ei
Weight Distribution I %
Size Blanding No.4 Anschutz No.1 Hanksville No.IIi'Three-Ore
Mesh (Tyled HRI-1l868 B.Rl-1l870 HRI-1117S-1 CompoSite
+35 0.0 0.0 O.S
35x46 2.5 0.2 1.9 1.2
48x65 16.2 7.4 15.3 12.7
65x100 25.0 25.2 26.2 28.9
lOOxlSO 18.7 21.9 19.5 20.1
150x2DO 10.4 14.6 13.4 13.7
200",270 4.5 7.6 6.2 6.0
270x325 1.S 2.8 1.8 2.9
-325 21.2 20.3 15.2 14~5
100.0 100.0 leD.O 100.0..,....
11 Data from June 15,1977 report "Uranium Recovery from Hanksville and Blanding
Station Ores."
:'''..
A-l
c.
Screen Ana lysis of Blanding No.4,Anschutz No.1,and
Hanksville No.2A Ore Feed to Leach
Grinding conditions:
Mill
Rod charge
Rod,steel,7-5/8"diam x 9-1/2 1',ribbed,85/90 rpm
Steel rods,9"in length
Diam No.of Weight
inch Rods kg
1/4
3/8
1/2
5/8
6
7
16
6
0.54
1.11
4.49
2.76
8.90
Ore charge
H20
Time
Screen analysis:
1.0 kg,minus 6-mesh
1.0 kg
3 min
"
Weiqht Distribution,%
Size
Mesh (Tyler)
Blanding No.4
ERr-118GS
Anschutz No.1 Hanksville No.2A
HRI-1l870 HRI-1l869
-
+28
28x3S
3Sx48
48x65
65xlOO
100xlSO
lS0x200
200x270
270x325·
-325
0,0
2,5
16.2
25.0
18.7
10.4
4.5
1.5
21.2
100.0
0.0
0.2
7.4
25.2
21.9
14.6
7.6
2.8
20.3
100.0
12.3
11.3
13.5
9.2
7.1
4.8
4.2
-3.0
2.3
32.3
100.0
I'I~
"
ATTACHMENTF
RADON EMANATION CALCULATIONS
(REVISED)
PREPARED BY
INTERNATIONAL URANIUM (USA)CORP.
INDEPENDENCE PLAZA
1050 17TH STREET,SUITE 950
DENVER,CO 80265
Knight Piesold
Memorandum
Date:April 15,1999
To:File 1626B
From:Roman Popielak and Pete Duryea
Re:Radon Emanation Calculations (Revised)
16268
At the request ofInternational Uranium (USA)Corporation (lUC),we have completed a series of
analyses ofthe expected levels of radon flux from the White Mesa uranium tailings facility for the
tailings cover design.These analyses accounted for recent comments from the United States Nuclear
Regulatory Commission (NRC).
Analysis Methodology and Input Parameters
The analyses conducted and described herein adopted the methods and approach detailed in NRC
Regulatory Guide 3.64 and more specifically the computer code RADON Version 1.2.The code,
which considers one-dimensional steady state gas diffusion,requires input data including:layer
thickness,porosity,dry density,radium activity,emanation coefficient,gravimetric water content
and radon diffusion coefficient.These input data were based exclusively on available data from
previous work by others including Rogers and Associates Engineering Corporation,Advanced Terra
Testing,Chen and Associates,D'Appolonia Consulting Engineers Inc.and TITAL"J Environmental.
Key laboratory data and a summary ofparameters selected for these analyses are presented in the
attached Table 1.
The current cover design includes 2.0 feet of random fill (frost barrier fill)over 1.0 foot of
compacted clay which in turn overlies 3.a feet of random fill (platform fill).In the analyses,the
thickness of final cover was reduced by 6.8 inches to 1.4 feet to account for the depth of frost
penetration as evaluated by TITAN Environmental.The actual tailings thickness is on the order of
44 feet,which meets the NRC guidelines for an infinitely thick source,and hence it could be
modeled in program RADON as a SOO.O-centimeter thick layer.Available data on the in-situ density
of the tailing was used.All available historical Proctor compaction results for the other materials
were evaluated to select appropriate maximum dry densities for the clay and random fill.
The clay layer and frost barrier fill,which are to be placed and compacted as engineered tJ.ll
materials,were modeled with 9S-percent standard Proctor compaction.The platform fill material
is dumped and spread directly on top ofthe tailing surface.Once in place,the material is compacted
by selective routing of equipment traffic,and it then provides a working surface for subsequent
operations such as placement and compaction ofthe clay layer and frost barrier fill.The compaction
of material comprising the platform is expected to be higher at its top than at its contact with the
tailings.
C:IPROJECTSI1626BI26BRSLT3.MEM
Knight Piesold
2
File 1626B
Radon Emanation Calculations (Revised)
April ]5,1999
Within the platform fill,the surficial material is likely to exhibit fairly high compaction given the
influence of the contact stresses exerted by equipment traffic and later by the compaction of
overlying material.Such stresses diminish with depth,so lower portions of the platform fill will not
have experienced as significant a compactive effort.Compaction of the platform fill is therefore
likely to range from about 80-percent of standard Proctor at the base ofthe random fill immediately
above the tailing to 90-to 95-percent of standard Proctor compaction at the top ofthe platform fill
immediately below the equipment loads just described.
The porosity of each of the materials/sublayers was calculated from its dry density and specific
gravity of soil solids.Radium activities and emanation coefficients were selected for each soil type
from available lab data,and the long term water contents were selected for the analyses as follows.
In the absence ofother data,the tailing was modeled with a 6.0 percent by weight moisture content
as the NRC recognizes that value as a practical lower bound for soils in the western United States.
Long term moisture content can be conservatively modeled as the residual (or irreducible)water
content from capillary moisture retention data since a lower value is more critical,that is it yields
a higher radon flux.Such data was provided and used for the random fill and the clay.
The final,and one of the more critical parameters,was the radon diffusion coefficient.This
parameter is dependent upon the porosity and degree of saturation ofthe soil,and although lab data
was available,it was for conditions other than those modeled.So in the absence of diffusion
coefficient data at the porosities and degrees of saturation ofinterest,a correlation provide by the
NRC was employed to compute the diffusion coefficients adopted for the analyses.These values
ranged from 0.0071 to 0.0507 cm2/sec. It should be noted that the resultant values did seem to match
well with the trends observed in the available laboratory data.
Results and Conclusions
Since there were not data available describing the degree and distribution of compaction in the
platform fill,a series ofanalyses were conducted based on varying assumptions about the condition
ofthat material.In each ofthose cases,the platform fill was divided into a series of sublayers whose
thickness and degree ofcompaction were selected based upon engineering judgement and previous
experience with similar situations.
The two cases of distribution of compaction considered to represent the conditions anticipated at
White Mesa are presented in attached Figure 1 as Case I and Case II.The results ofthe radon flux
evaluation for those two cases are attached.For the reasonably conservative input parameters listed
herein and an interim cover comprising 1.0 foot each at 80-,90 and 95-percent compaction as shown
as Case I in Figure 1,a radon flux at the ground surface of 18.2 pCi/m2/sec is expected.For Case
II with 0.5 foot of 95-percent compaction material overlying 1.0 feet of 90-percent compaction
material and 1.5 feet of 85-percent compaction material,the radon flux at the ground surface is 19.8
pCi/m2/sec.Both of these results are within the 20.0 pei/m /sec limit specified by the NRC.
CIPROJECTs\1626BI26BRSLT3.MEM
Knight Piesold
..,
.)
File 1626B
Radon Emanation Calculations (Revised)
April 15,1999
Therefore,it appears that the cover design should be acceptable assuming that the conditions
described herein do not vary significantly from those in the field.
In conclusion,empirical knowledge of the site conditions should be taken under consideration in
evaluation ofthe model results.At present,approximately 80-percent of Cell NO.2 is covered with
the random fill (platform fill).This fill supports traffic of the heavy,30 ton haulers.Hence the
degree ofcompaction ofthe layer(s)as represented in the radon flux models (see Figure 1)may have
already been achieved in certain locations within the cell.The platform fill has been very effective
to date in attenuating the radon flux,which as currently recorded is 7.4 pCi/m2/sec which is well
below the standard of 20.0 pCi/m2/sec.Based on these observations,it would appear that the
performance of the tailings cover,which will ultimately include the clay layer and frost barrier fill
in addition to the fill currently in place,as a barrier controlling radon flux is anticipated to meet the
regulatory requirements.
C:IPROJECTS\1626BI26BRSLT3.MEM
Materhll
Tailings
Rnd.Fill (Comp.)
Clay (Site #1)
Clay (Site #4)
Clay (UT-l)
Material
Tailings
Rnd.Fill @ 80%Std.
Rnd.Fill @ 85%Std.
Rnd.Fill @ 90%Std.
Rnd.Fill @ 95%Std.
Clay@ 95%Std.
Table 1
Laboratory and Model Input Data
LABORATORY DATA
Specific Max.Dry Max.Dry 95%Max.Porosit/I)Dry Radium Emanation Water Diffusion(7)Saturation(l)Diffusion!lJ
Gravity lJnit Wt.Density Dry Density Density Activity Coefficient Content Coefficient Coeflicicnl
G,Ydr,',IU;lX Pdry,lU:lx rdrJ.9S"/...max n Pdry w D S D
(pet)(g/cm3)(g/cm3)(g/cm3)(pCi/g)(%bywt.)(cm2/sec)(cm2/scf)
2.85 104.0 1.67 1.58 0491 145 981.0 0.19 13.2 2.00E-02 0390 2.071/-02
2.85 J04.0 1.67 1.58 0495 1.44 981.0 0.19 19.1 84012-03 0.556 1.061:-02
2.67 120.2 1.93 1.83 0307 1.85 1.9 0.19 6.5 1.60E-02 0.392 1.63E-02
2.67 120.2 1.93 1.83 0.31 I 1.84 1.9 0.19 12.5 4.5012-04 0.740 1.')91:-01
2.69 121.3 1.94 1.85 0.312 1.85 2.2 0.20 8.1 1.6012-02 0480 1121:-02
2.69 121.3 1.94 1.85 0.316 1.84 2.2 0.20 12.6 1.4012-03 0.734 2.13E-Ol
2.75 1087 1.74 1.65 0400 1.65 2.0 0.1 I 154 1.1012-02 0035 5481-111
2.75 108.7 1.74 1.65 0400 1.65 2.0 0.11 19.3 4.2012-04 o7%1341':-1)1
2.39 113.5 1.82 1.73 tJ.280 1.72 1.5 0.22 14.5 9.1012-03 08')0 284E-O'1
SELECTED MODEL INPUT DATA
Specific(6)Max.Dry(6)Max.Dry Specified Purusity(l)Dry(4)Radium(6)Emanation(6)Water(S)Diffusion(3)Saturation(2)
Gravity Unit Wt.Density Dry Density Density Activity Cuefficient Cuntent Coefficient
G,Ydry,m:lx Pdry,max Pdry"pec n Pdry w D S
(pet)(g/cm~(g/cm3)(g/cm3)(pCi/g)(%hy wt.)(cm2/sec)
2.85 N/A N/A N/A 0.583 1.19 981.0 0.19 0.0 50712-02 o 122
2.67 120.2 1.93 1.54 0.423 1.54 1.9 0.19 9.8 2.12E-02 0357
2.67 120.2 1.93 1.04 0.387 1.64 1.9 0.19 9.8 l.o2E-02 0415
2.67 120.2 1.93 1.73 0.351 1.73 1.9 0.19 9.8 115£-02 0484
2.67 120.2 1.93 1.83 0.315 1.83 1.9 0.19 9.8 7.0512-01 0570
272 100.0 1.60 1.52 0440 1.52 1.9 0.18 14.1 1.3012-02 0488
(I)n=I-((\h"l(l/P",)
(2)S=w*Gs*rlh"lpw/(Us*Pw-l\hy)
(3)D=0.07cxp(-4(S_Sn2+S5»perNRC correlation
(4)Tailings based on 74.2 pef.Rnd.Fill ranges Irom so to 95'%Std.Proctor.Clay based on 95%Std.Proctor.
(5)Tailings based on w=6'V.,per NRC.Others based on eapillury moisture data.Rnd.Fill w=9.8%and Clay w=14.1%(average oftwo tests).
(6)Values for clay are an average oUest results.
(7)lndividuallab test results.
Case I
Figure 1
Cover Cross Sections for Radon Flux Models
Radon Flux 18.2 pCilm 2/s
1.4'(42.7 em)95%Compaction Frost Barrier Fill
1.0'(30.5cml_
1.0'(30.5 em)95%Compaction
Clay Layer
1.0'(30.5 em)
1.0'(30.5 em)
16.4'(500.0 em)
Case II
1.4'(42.7 em)
90%Compaction
80%Compaction
Radon Flux 19.8 pCi/m2/s
95%Compaction
Platform Fill
Tailings
Frost Barrier Fill
1.0'(30.5cmi _
0.5'(15.2 em)95%Compaction
Clay Layer
1.0'(30.5 em)
1.5'(45.7 em)
16.4'(500.0 em)
90%Compaction
85%Compaction
Platform Fill
Tailings
Note:Percent compaction is based upon the maximum dry density by standard Proctor.
G:\16005\1626b\f1ux figure.xls 4/15/99
-----*****!RADON !*****-----
Version 1.2 -Feb.2,1989 -G.F.Birchard tel.#[phone]
U.S.Nuclear Regulatory Commission Office of Research
RADON FLUX,CONCENTRATION AND TAILINGS COVER THICKNESS
ARE CALCULATED FOR MULTIPLE LAYERS
WHITE MESA C.A-St3:L
CONSTANTS
RADON DECAY CONSTANT
RADON WATER/AIR PARTITION COEFFICIENT
SPECIFIC GRAVITY OF COVER &TAILINGS
GENERAL INPUT PARAMETERS
LAYERS OF COVER AND TAILINGS
DESIRED RADON FLUX LIMIT
LAYER THICKNESS NOT OPTIMIZED
DEFAULT SURFACE RADON CONCENTRATION
SURFACE FLUX PRECISION
LAYER INPUT PARAMETERS
LAYER 1
THICKNESS
POROSITY
MEASURED MASS DENSITY
MEASURED RADIUM ACTIVITY
MEASURED EMANATION COEFFICIENT
CALCULATED SOURCE TERM CONCENTRATION
WEIGHT %MOISTURE
MOISTURE SATURATION FRACTION
MEASURED DIFFUSION COEFFICIENT
LAYER 2
THICKNESS
POROSITY
MEASURED MASS DENSITY
MEASURED RADIUM ACTIVITY
MEASURED EMANATION COEFFICIENT
CALCULATED SOURCE TERM CONCENTRATION
WEIGHT %MOISTURE
MOISTURE SATURATION FRACTION
MEASURED DIFFUSION COEFFICIENT
.0000021
.26
2.65
6
20 pCi m--2 s --1
0 pCi 1--1
0 pCi m--2 s --1
500 cm
.583
1.19 g cm--3
981 pCi/g--1
.19
7.990D-04 pCi cm --3 s --1
6 s-o
.122
.0507 cm-2 s:'-l
30.5 cm
.423
1.54 g cm --3
1.9 pCi/g--1
.19
2.760D-06 pCi cm--3 s --1
9.8 %
.357
.0212 cm-2 s --1
LA'fER 3
THICKNESS 30.5 em
'OOROSITY .351
lEASURED MASS DENSITY 1.73 g em--3
MEASURED RADIUM ACTIVITY 1.9 pCi/g--1
MEASURED EMANATION COEFFICIENT .19
CALCULATED SOURCE TERM CONCENTRATION 3.737D-06 pCi cm--3 8--1
WEIGHT %MOISTURE 9.8 %
MOISTURE SATURATION FRACTION .483
MEASURED DIFFUSION COEFFICIENT .0115 em-2 8--1
LAYER 4
THICKNESS 30.5 em
POROSITY .315
MEASURED MASS DENSITY 1.83 g em--3
MEASURED RADIUM ACTIVITY 1.9 pCi/g--1
MEASURED EMANATION COEFFICIENT .19
CALCULATED SOURCE TERM CONCENTRATION 4.404D-06 pCi em--3 8--1
WEIGHT %MOISTURE 9.8 %
MOISTURE SATURATION FRACTION .569
MEASURED DIFFUSION COEFFICIENT .0071 em-2 8--1
LAYER 5
fHICKNESS 30.5 em
POROSITY .44
MEASURED MASS DENSITY 1.52 g em--3
MEASURED RADIUM ACTIVITY 1.9 pCi/g--1
MEASURED EMANATION COEFFICIENT .18
CALCULATED SOURCE TERM CONCENTRATION 2.481D-06 pCi em--3 8--1
WEIGHT %MOISTURE 14.1 %
MOISTURE SATURATION FRACTION .487
MEASURED DIFFUSION COEFFICIENT .013 em-2 8--1
LAYER 6
THICKNESS 42.7 em
POROSITY .315
MEASURED MASS DENSITY 1.83 g em--3
MEASURED RADIUM~ACTIVITY 1.9 pCi/g--1
MEASURED EMANATION COEFFICIENT .19
CALCULATED SOURCE TERM CONCENTRATION 4.404D-06 pCi cm--3 8--1
WEIGHT %MOISTURE 9.8 %
MOISTURE SATURATION FRACTION .569
MEASURED DIFFUSION COEFFICIENT .0071 em-2 8--1
DATA SENT TO THE FILE -RNDATA'ON DRIVE A:
N F01 CN1 ICOST CRITJ ACC
6 -1.000D+00 O.OOOD+OO 0 2.000D+01 O.OOOD+OO
LAYER DX D P Q XMS RHC
1 5.000D+02 5.070D-02 5.830D-01 7.990D-04 1.225D-01 1.190
2 3.050D+01 2.120D-02 4.230D-01 2.760D-06 3.568D-01 1.540
3 3.050D+01 1.150D-02 3.510D-01 3.737D-06 4.830D-01 1.730
4 3.050D+01 7.100D-03 3.150D-01 4.404D-06 5.693D-01 1.830
5 3.050D+01 1.300D-02 4.400D-01 2.481D-06 4.871D-01 1.520
6 4.270D+01 7.100D-03 3.150D-01 4.404D-06 5.693D-01 1.830
BARE SOURCE FLUX FROM LAYER 1 :6.938D+02 pCi m--2 8--1
RESULTS OF THE RADON DIFFUSION CALCULATIONS
LAYER THICKNESS EXIT FLUX EXIT CONC.
(em)(pCi m--2 8--1)(pCi 1--1)
1 5.000D+02 1.417D+02 2.911D+05
2 3.050D+01 8.383D+01 1.976D+05
3 3.050D+01 5.158D+01 1.220D+05
4 3.050D+01 3.608D+01 5.146D+04
5 3.050D+01 2.274D+01 4.139D+04
6 4.270D+01 1.824D+01 O.OOOD+OO
-----*****!RADON !*****-----
Version 1.2 -Feb.2,1989 -G.F.Birchard tel.#[phone]
U.S.Nuclear Regulatory Commission Office of Research
RADON FLUX,CONCENTRATION AND TAILINGS COVER THICKNESS
ARE CALCULATED FOR MULTIPLE LAYERS
WHITE MESA cAse.:rr:
CONSTANTS
RADON DECAY CONSTANT
RADON WATER/AIR PARTITION COEFFICIENT
SPECIFIC GRAVITY OF COVER &TAILINGS
GENERAL INPUT PARAMETERS
LAYERS OF COVER AND TAILINGS
DESIRED RADON FLUX LIMIT
LAYER THICKNESS NOT OPTIMIZED
DEFAULT SURFACE RADON CONCENTRATION
SURFACE FLUX PRECISION
LAYER INPUT PARAMETERS
\YER 1
THICKNESS
POROSITY
MEASURED MASS DENSITY
MEASURED RADIUM ACTIVITY
MEASURED EMANATION COEFFICIENT
CALCULATED SOURCE TERM CONCENTRATION
WEIGHT %MOISTURE
MOISTURE SATURATION FRACTION
MEASURED DIFFUSION COEFFICIENT
LAYER 2
THICKNESS
POROSITY _
MEASURED MASS DENSITY
MEASURED RADIUM ACTIVITY
MEASURED EMANATION COEFFICIENT
CALCULATED SOURCE TERM CONCENTRATION
WEIGHT %MOISTURE
MOISTURE SATURATION FRACTION
~EASURED DIFFUSION COEFFICIENT
.0000021
.26
2.65
6
20 pCi m--2 s --1
0 pCi 1--1
0 pCi m--2 s --1
500 cm
.583
1.19 g cm --3
981 pCi/g--1
.19
7.990D-04 pCi cm--3 s --1
6 %
.122
.0507 cm-2 s --1
45.7 cm
.387
1.64 9 cm--3
1.9 pCi/g--1
.19
3.213D-06 pCi cm--3 s --1
9.8 %
.415
.0162 cm-2 s --1
LAYER 3
THICKNESS 30.5 em
POROSITY .351
IEASURED MASS DENSITY 1.73 g em--3
MEASURED RADIUM ACTIVITY 1.9 pCi/g--1
MEASURED EMANATION COEFFICIENT .19
CALCULATED SOURCE TERM CONCENTRATION 3.737D-06 pCi em--3 s--l
WEIGHT %MOISTURE 9.8 %
MOISTURE SATURATION FRACTION .483
MEASURED DIFFUSION COEFFICIENT .0115 em-2 s--l
LAYER 4
THICKNESS 15.2 em
POROSITY .315
MEASURED MASS DENSITY 1.83 g em--3
MEASURED RADIUM ACTIVITY 1.9 pCi/g--1
MEASURED EMANATION COEFFICIENT .19
CALCULATED SOURCE TERM CONCENTRATION 4.404D-06 pCi em--3 s--l
WEIGHT %MOISTURE 9.8 %
MOISTURE SATURATION FRACTION .569
MEASURED DIFFUSION COEFFICIENT .0071 em-2 s--l
LAYER 5
lHICKNESS 30.5 em
POROSITY .44
MEASURED MASS DENSITY 1.52 g em--3
MEASURED RADIUM ACTIVITY 1.9 pCi/g--1
MEASURED EMANATION COEFFICIENT .18
CALCULATED SOURCE TERM CONCENTRATION 2.481D-06 pCi em--3 s--l
WEIGHT %MOISTURE 14.1 %
MOISTURE SATURATION FRACTION .487
MEASURED DIFFUSION COEFFICIENT .013 em-2 s--l
LAYER 6
THICKNESS 42.7 em
POROSITY .315
MEASURED MASS DENSITY 1.83 g em--3
MEASURED RADIUM ACTIVITY 1.9 pCi/g--1
MEASURED EMANAT!bN COEFFICIENT .19
CALCULATED SOURCE TERM CONCENTRATION 4.404D-06 pCi em--3 s--l
WEIGHT %MOISTURE 9.8 %
MOISTURE SATURATION FRACTION .569
MEASURED DIFFUSION COEFFICIENT .0071 em-2 s--l
OATA SENT TO THE FILE 'RNDATA'ON ORIVE A:
N F01 CN1 ICOST CRITJ ACC
6 -1.0000+00 O.OOOD+OO 0 2.000D+01 0.0000+00
LAYER OX D P Q XMS RHO
1 5.0000+02 5.070D-02 5.830D-01 7.990D-04 1.2250-01 1.190
2 4.570D+01 1.620D-02 3.8700-01 3.213D-06 4.1530-01 1.640
3 3.050D+01 1.150D-02 3.510D-01 3.737D-06 4.830D-01 1.730
4 1.520D+01 7.100D-03 3.150D-01 4.404D-06 5.693D-01 1.830
5 3.0500+01 1.300D-02 4.4000-01 2.481D-06 4.8710-01 1.520
6 4.270D+01 7.100D-03 3.150D-01 4.404D-06 5.693D-01 1.830
BARE SOURCE FLUX FROM LAYER 1 :6.938D+02 pCi m--2 s--l
RESULTS OF THE RADON DIFFUSION CALCULATIONS
LAYER THICKNESS EXIT FLUX EXIT CONC.
(em)(pCi m--2 s--l)(pCi 1--1)
1 5.000D+02 1.382D+02 2.9300+05
2 4.570D+01 7.131D+01 1.485D+05
3 3.0500+01 4.602D+01 9.400D+04
4 1.520D+01 3.921D+01 5.586D+04
5 3.050D+01 2.469D+01 4.491D+04
6 4.270D+01 1.977D+01 O.OOOD+OO
ATTACHMENT G
CHANNEL AND TOE APRON
DESIGN CALCULATIONS
OF
WHITE MESA FACILITIES
BLANDING,UTAH
PREPARED BY
INTERNATIONAL URANIUM (USA)CORP.
INDEPENDENCE PLAZA
1050 17TH STREET,SUITE 950
DENVER,CO 80265
ATIACHMENT 7 -RESPONSE TO NRC COMMENTS 7/17/98
TABLE OF SIX-HOUR LOCAL PMP RAINFALL DEPTH VS DURATION FOR WHITE MESA MIL
6-Hour Storm Rainfall is 10 inches (ref:Hydrologic Design Report for White Mesa Mill,1990)
6/1 Hr Ratio for WHITE MESA is 1.22 (Figure 4.7 and Table 4.4,HMR 49)
ONE-HOUR PMP IS:8.20 inches at 5000 ft.elevation
97.0%or 7.95 inches at 5600 ft.elevation (1)
DURATION 0",OF RAINFALL DEPTH,IN INCHES,AT AVERAGE ELEVATION OF:
HOURS 1-HR PMP (based on Table 6.3A,HMR 49)
SCOOft S6COft(1)
0 0 0.00 0.00
0.25 74 6.07 5.88
0.5 89 7.30 7.08
0.75 95 7.79 7.55
1 100 8.20 7.95
2 111 9.10 8.83
3 116 9.51 9.22
4 119 9.75 9.46
5 121 9.92 9.62
6 122 10.00 9.70
Plot of data is adaptation of Figure 12.10,HMR 55A,to site rainfall.
(1)Average elevation of site in vicinity of base of cell 4Aeach tanks
TIME DISTRIBUTION OF FIRST ONE HOUR,OR THE ONE-HOUR PMP
(after Table 2.1,NUREG CR 4620)
RAINFALL RAINFALL %OF RAINFALL DEPTH IN INCHES
DURATION DURATION ONE-HOUR AT ELEVATION:
MINUTES HOURS PMP
SOOOft S600ft(1)
0 0 0 0 0
2.5 0.04 27.5 2.25 2.19
5 0.08 45 3.69 3.58
10 0.17 62 5.08 4.93
15 0.25 74 6.07 5.88
20 0.33 82 6.72 6.52
30 0.50 89 7.30 7.08
45 0.75 95 7.79 7.55
60 1.00 100 8.20 7.95
----+--------+--------+--------+--------~--------+-----------------
DEPTH VS DURATION FOR 6-HR PMP
WHITE MESA MILL,UTAH
ATTACHMENT 8 RESPONSE TO NRC COMMENTS 7/17/98
12.00
10.00 -------------------1---------------+---------------------+---------f-------------------
___-------.----------l~-------._-~~-----
f3 8.00 ----------------=------+--------1---------1---------+---------+--------
IUZ
II-:Ii 6.00o
.....J.....J«LLZ
~4.00
2.00 -------------+-------+---------+---------.---------------jf-------f-------
0.00
o 1 2 3 4
DURATION,HOURS
5 6 7
6.00
enw:t:(.)
~
J..J<LL 4.00z~
3.00
RAINFALL-DURATION CURVE FOR ONE-HOUR PMP AT WHITE MESA MILL
ATTACHMENT 9 -RESPONSE TO NRC COMMENTS 7/17/98
0.00 0.20 DAD 0.60
DURATION,HOURS
0.80 1.00 1.20
ATTACHMENT 11 RESPONSES TO NRC COMMENTS 7/17/98
RATIONAL METHOD CALCULATION OF PMF PEAK DISCHARGE,VELOCITY,AND DEPTH THROUGH CELL #1 DISCHARGE CHANNEL
FLOWPATH ELEMENT MAX.MIN.GRADIENT SLOPE tc RAINFALL I SURFACE PEAK I
ELEMENT LENGTH ELEV ELEV.S ANGLE WITHIN AREA DISCHARGE
L degrees hours tc (1)Inlhr acres Q.cts
LONGEST 4800 5655 5610 0.0094 0.54 0.54 7.20 13.43 143 1344
FLOWPARAMETERS IN CELL #1 DISCHARGE CHANNEL AT PEAK PMF DISCHARGE
Channel Channel Channel Manning Flow Allowable
Bottom Side Gradient.s Coell.Qn/149·sA.S Depth.y Cross Section Hydraulic a(R)A.67 Velocity Peak
Width.b Slopes n Area 01 Flow Radius v Velocity
ft fJlft ft a.ftA2 R,ft Ips Ips
(COE.1970)
Bedrock Channel 100 3:1 0.0100 0.025 226 1.62 169.9 1.54 226.95 7.96 8-10
Bedrock Channel 120 3:1 0.0100 0.025 226 1.45 180.3 1.40 225.46 7.45 8-10
ATTACHMENT 12 TABLE -RESPONSES TO NRC COMMENTS 7/17/98
ROCK APRON DESIGN TABLE -TAILING CELL EROSION PROTECTION
WHITE MESA MILL
ELEMENT ELEMENT GRADIENT SLOPE tc RAINFALL INTENSITY Peak d50
LENGTH WIDTH S ANGLE (minimum WITHIN Untt
FLOW PATH ELEMENT L W IS 0.042)tc Discharge
q
It It fUll degrees hours inches ln/hr cfslft Inches
APRON 10 1 0.01 0.57 0.60 729 12.07 180 7.3
Notes'
The top coverelement length IS 2450 11.Thiswas used In the calculations fortime of concentration and peak unit discharge
The Qutslope elementlength 15 240 ft.This was usedin the calculations for time of concentration and peakunit discharge
The d50 for the outslopewas calculated per Abt,SR.and Johnson,TL.,"Rlprap Design for Overtopping Flow,"ASCE Journalof Hydraulic Engineenng,1991
The d50 for the apron was calculated perAbt,S.R.,Johnson,TL.,Thornton,C.1.and Trabant,SC.,"RiprapSizing atToe of Embankment Slopes,"ASCE Journal ofHydraulic Englneenng,July 1998
DEPTH OF SCOUR AT DOWNSTREAM EDGE OF TOE APRON
All methods used are from Pemberton,EL,and J.M.Lara.1984,"Computing Degradation and Local Scour",Technical Guideline for Bureau of Reclamation
ds =depth of scour,ft.
q =unit discharge,cfs/ft
Method 1 ds=K*q"0.24
K=constant,2.45
q=1.81 cfs/ft
ds =2.82 ft
Method 2 ds =0.25 dm
dm =mean water depth at design discharge
ds =0.22 ft.
Method 3 ds =O.6*dfo
dfo =q"0.666/Fbo"0.333
Fbo =zero bed factor =1.0 ft/s"2 for fine sand
ds =0.09 ft
Method 4 ds =0.25 *dma
dma =unit cross section offlow =0.87 ft
ds =0.22 ft
Method 5 ds =dma*((VmNc).1)
Vm =mean velocity =1.81/0.78fps
Vc =0.5 fps
ds=3.17 ft
AVERAGE SCOUR DEPTH =1.30 ft
minimum depth ofdownstream edge scour barrier
8/27/9R G:\16OOS\1626B\XLS\ROKAPRON2 .xls
ATTACHMENTH
ROCK TEST RESULTS
BLANDING AREA GRAVEL PITS
PREPARED BY
INTERNATIONAL URANIUM (USA)CORP.
INDEPENDENCE PLAZA
1050 17TH STREET,SUITE 950
DENVER,CO 80265
TO:
FROM:
DATE:
Harold R.Roberts
Robert A.Hembree
November 20,1998
cc:William N.Deal
SUBJECT:Rock Test Results -Blanding Area Gravel Pits
Attached you will find the results for lab tests that were performed on rock samples obtained from
three gravel sources around the White Mesa Mill.These samples were taken from the Cow Canyon
pit located just north ofBluff(15 miles south ofthe mill),the Brown Canyon pit located on the east
side of Recapture Canyon four miles northeast of the mill,and the North Pit located one mile
northeast ofBlanding.A 75 pound sample ofmaterial was collected from each site,each sample
was crushed and screened to a +1/2 -1 Y2 inch size.Testing was performed by Western Colorado
Testing in Grand Junction,Colorado.All samples were tested for specific gravity,absorption,sulfate
soundness and L.A.Abrasion.
Test results indicate that all three sites score high enough to be used as rip rap sources for the
reclamation cover at the mill (see attached scoring calculations).The Cow Canyon site scores high
enough that there would be no over-sizing required;it is suitable for use in channels as well as on
side and top slopes.The Brown Canyon site requires the most over-sizing at nineteen percent (19%).
The North Pit material would require over-sizing of9.35%.These test results prove that there are
sources of rip rap material within a reasonable distance ofthe mill site.The average over-sizing
factor for the three sites is 9.5%,which is well below the 25%number used in the 1996 reclamation
cost estimate.The over-sizing factor used in the Titan Design Study was also 25%.
Based on the results ofthe testing IUC could use any ofthese three sites.The North Pit would be
the most reasonable choice of material sites since it has a lower over-sizing factor than the Brown
Canyon site and is closer to the mill than the Cow Canyon site.The North Pit also has the advantage
of being an established public pit on BLM administered land.
RAH/rah
International Uranium (USA)Corp.
WHITE MESA MILL RECLAMATION
NRC Rip Rap Scoring Calculations
Weighting Factors for Igneous Rocks
Oversizing for side slopes,top slopes,and well drained toes and aprons
Rock Scoring less than 50%is rejected,rock scoring over 80%does not require oversizing
Cow Canyon Pit (Bluff)
Lab Test Lab Results Score Weight Score x Weight Max.Score
Specific Gravity 2.63 7.5 9 67.5 90
Absorption,%0.47 8.25 2 16.5 20
Sodium Sulfate Sound.,%0.2 10 11 110 110
LA Abrasion, %6.4 7.5 7.5 10
Totals 201.5 230
Overall Score I 87.61 1%
Oversizing none %
Brown Canyon Site
Lab Test Lab Results Score Weight Score x Weight Max.Score
Specific Gravity 2.525 5.5 9 49.5 90
Absorption,%2.61 1.75 2 3.5 20
Sodium Sulfate Sound.,%5.5 7.5 11 82.5 110
LA Abrasion,%10.3 4.75 4.75 10
Totals 140.25 230
Overall Score I 60.981%
Oversizing 19.02 %
North Pit (N.Blanding)
Lab Test Lab Results Score Weight Score x Weight Max.Score
Specific Gravity 2.557 6.25 9 56.25 90
Absorption,%2.84 1.25 2 2.5 20
Sodium Sulfate Sound.,%3.2 8.75 11 96.25 110
LA Abrasion, %6.3 7.5 7.5 10
Totals 162.5 230
Overall Score I 70.651%
Oversizing 9.35 %
WESTERN
COLORADO
TESTING,
INC.
S29 251/2 Road,SUite B-l01
Grand Junction,Colorado 81505
[phone].Fax [phone]
November 16,1998
WCT #811898
International Uraniu.USA Corporation
Independence Plaza
1050 17th Street
Denver,Colorado 80265
Attention:
Ret.r.nc.:
Mr.Bob Hembre.
Rock Durability Testing
As requa.ted,three (3)potential sources of riprap for use in
reclaaation ot tailings ponda in Blanding,Utah were tested for
rock durability.Tha r1prap material was obtained,crushed to
testing size,and delivered to western Colorado Te8ting,Inc.by
the client.The three sources of material were tested for
specific gravity and absorption (ASTM C127),Sodium SUlfate
Soundness (ASTM ces),and Los Angeles Abrasion (ASTM C131).The
results of the testing are provided beloW.
lin
Bulk Specific Gravity,g/cc
SSD specific Gravity,glee
Apparent Specific Gravity,glee
Water Absorption,,
Sodium Sulfate Soundness,Avg.,Loss
L.A.Abrasion,,Loss'100 Rev.
1.lult
2.630
2.642
2.663
0.47
0.2
6.4
Paqe 2International Uranium USA Corporation
WCT 1811898
November 16,1998
bn
Sulk sp.cific Gravity,glee
SSD Specific'Gravity,glee
Appar.nt Specific Gravity,9/ee
Water Abaorption,,
Sodiua sulfate Soundn•••,Avg.,Loss
L.A.Abra.ion,,LoB'@ 100 Rev.
•••ult.
2.460
2.525,
2.629
2.61
5.5.
10.3
b6
Bulk Sp.clfiQ Gravity,glee
SSD Specific Gravity,glee
Apparent Specific Gravity,gJee'
Water Absorption,,
Sodium Sulfate Soundnes.,Avg."Loas
L.A.Abrasion,,Los.,100 Rev.
B"Dlt
2.485
2.557
2.674.
2.84
3.2
6.3
If there are any questions or if additional testing is needed,
plea••feel tree to contact our office.
Respectfully Submitted:
....,...C:OLOUDO '••lf1.G,1:MC.
Kyle Alpha
Construction Services Manager
Reclamation Plan
White Mesa Mill
Blanding,Utah
Radioactive Materials License No.UT1900479
Revision 4.0
Appendices A ~F
November 2009
Prepared By:
Denison Mines (USA)Corp.
1050 17'h Street,Suite 950
Denver,CO 80265
[phone]
Page ii
Revision 4.0
Denison Mines (USA)Corp.
White Mesa Reclamation Plan
LIST OF APPENDICES
(Appendix D Was Previously Submitted with Revision 1.0,February 28,1997)
Appendix
A
B
C
Description
Semi-Annual Effluent Reports (January through June,2008),(June
through December,2008)and (January through June,2009),for the
Mill
Site Hydrogeology and Estimation ofGroundwater Travel Times In
The Perched Zone White Mesa Uranium Mill Site Near Blanding,
Utah,August 27,2009,prepared by Hydro Geo Chem,Inc.(the
"2009 HGC Report")
The Mill's Storm water Best Management Practices Plan,Revision
1.3 :June 12,2008
D Tailings Cover Design,White Mesa Mill,October 1996.Titan
Environmental Corporation.
E National Emission Standards for Hazardous Air Pollutants Radon
Flux Measurement Program,White Mesa Mill Site,2008,Tellco
Environmental
F Semi-Annual Monitoring Report July 1 --December 31,2008 and
Annual Monitoring Summary for 2008,White Mesa Mill
Meteorological Station,January 20,2009,McVehil-Mo1l1lett
Associates,Inc.
APPENDIX A
SEMI-ANNUAL EFFUENT REPORTS
SEMI-ANNUAL EFFUENT REPORT
JANUARY 1,2009 THROUGH JUNE 30,2009
Denison Mines (USA)Corp.
1050 17thStreet,Suite 950
Denver,CO 80265
USA
Tel:[phone]
Fax:303 389·4125
www.denisonmines.com
August 29,2009
Sent Via Federal Express
Mr.Dane Finerfrock,
Executive Secretary,
Utah Radiation Control Board,
Utah Department of Environmental Quality,
Division ofRadiation Control
168 North 1950 West
Salt Lake City,Utah 84114-4850
Dear Mr.Finerfrock:
Re:State of Utah Radioactive Material License No.UT1900479
White Mesa Mill,Blanding,Utah
Semi-Annual Effluent Monitoring Report for Period
January 1,2009 through June 30,2009
As required by Utah Administrative Code,R 313-24-4 (incorporating by reference 10 CFR 40.65
(subpart1)),and License Condition 11.3 A of Utah Radioactive Materials License UT1900479,
enclosed is the semi-annual effluent monitoring report for the White Mesa Mill for the period
January 1,2009 through June 30,2009.
If you have any questions regarding this report,please contact Mr.David Turk at [phone]
or myself at [phone].
Yours very truly,
~~CORP.
Steven D.Landau
Manager,Environmental Affairs
Cc Ron Hochstein
Harold Roberts (w/o attachments)
David Frydenlund
David Turk
White Mesa Uranium Mill
Radioactive Materials License UT900479
Semi-Annual Effluent Monitoring Report
(January through June,2009)
Prepared For:
Utah Department ofEnvironmental Quality
Division of Radiation Control
Prepared by Denison Mines (USA)Corporation
1050 17th Street,Suite 950
Denver,CO 80265
August,2009
Introduction
The White Mesa Mill ("the Mill")has established monitoring programs to evaluate
compliance with effluent limitations and to assess the potential for release of radioactive
material into the local environment.These monitoring programs were developed and
implemented at the time of mill construction,operated with appropriate adaptation over
time,and remain consistent with the Mill's Radioactive Materials License and guidelines
developed by the Nuclear Regulatory Commission (U.S.N.R.C.Regulatory Guide 4.14,
Radiological Effluent and Environmental Monitoring at Uranium Mills-Rev.1,
ML003739941),1980).Accordingly,the Mill monitors the following environmental
media and conditions:
1)Airborne particulate radionuclide concentrations obtained from the following
sampling stations:
•North,East and South of the Mill Site:BHV-l &BHV-2 (north),BHV-S
(east),and BHV-4 (south)
•BHV-1 serving as a surrogate for the nearest resident,(i.e BHV-1 is
approximately 1.2 miles north of the Mill,but approximately 0.4 miles closer
to the Mill than the actual nearest resident)
• A background location distant to and west of the Mill (BHV-3),which was
monitored for airborne particulate up until November,1995,at which time
background was established.
• A station specifically requested by the White Mesa Ute Community south of
the Mill Site (BVH-6)
2)External (direct)gamma radiation measured at air monitoring stations BHV-1,
BHV-2,BHV-3,BHVA,and BHV-5.
3)Vegetative uptake of radionuclides at three site periphery locations
4)Stack release rates from the facility's air emissions sources
5)Surface water within the Cottonwood Creek and,when flowing,the Westwater
Creek drainage,both located west of the Mill
6)Soil radionuclide activity obtained near the air monitorinrstations
7)Ground water (up and down gradient)of the Mill facility
This semi-annual effluent report provides the results of the specific monitoring and
sampling activities that were undertaken during the subject reporting period,including:
•Airborne patticulate concentrations and radionuclide activity
•External radiation measurements
•Vegetative radionuclide uptake
•Radionuclide release rates measured at the yellowcake stack,baghouse and
the grizzly baghouse
•Surface water radionuclide content
I Ground water sampling is reported separately pursuant to the State of Utah Ground Water Discharge
Permit No.UGW370004 and is not included with this report.
Table of Contents
Section
Introduction .
Table of Contents .
1.0 Environmental Air Sampling
1.1 Program Overview .
1.2 Sampling Protocol &Analytical Results .
1.3 General Observations .
1.4 Specific Sampling Station Data .
1.5 Radon-222 ..
2.0 External Radiation (Direct Gamma)..
3.0 Vegetation Samples ..
4.0 Stack Sampling ..
5.0 Surface Water Monitoring ..
6.0 Soil Sampling ..
7.0 Meteorological Monitoring .
Attachments
11
1
1
2
3
5
6
7
7
8
8
9
Attachment A
Tab 1
Tab2
Tab 3
Tab 4
Tab 5
Tab 6
Attachment B
Attachment C
Attachment D
Attachment E
Attachment F
Attachment G
Attachment H
Sampling Station &Site Map
BHV-1 Air Sampling Graphs &Data Table
BHV-2 Air Sampling Graphs &Data Table
BHV-3 Air Sampling Graphs &Data Table
BHV-4 Air Sampling Graphs &Data Table
BHV-5 Air Sampling Graphs &Data Table
BHV-6 Air Sampling Graphs &Data Table
Air Radionuclide Lab.Results and QAlQC
Air Particulate Loading Tables
Environmental TLD Graph
Vegetation Graphs,Data Table,Lab.Results and QAlQC
Stack Sample Laboratory Results
Surface Data Table,Lab.Results and QAlQC
Soil Sample Graphs,Lab.Results and QAlQC
II
1.0 Environmental Air Sampling
1.1 Program Overview
The environmental airborne particulate monitoring program at the White Mesa Mill ("the
Mill")currently utilizes five air sampling stations.Four high-volume continuous air
sampling stations (BHV-l,BHV-2,BHV-4,and BHV-5)are required by the Mill's
Radioactive Materials License.These sampling stations serve as sentinels for airborne
particulate which could potentially emanate from the Mill site.In addition to its general
site monitoring function,location BHV-1 also serves as a conservative surrogate for
concentrations at the nearest resident,because it is located approximately 1.2 miles north
of the Mill just south ofthe nearest resident but between the Mill and that resident.With
regard to background monitoring,the Mill previously operated a continuous high-volume
air sampling station (BHV-3)which was located approximately 3.5 miles west of the
Milling operation.With the approval of the U.S.Nuclear Regulatory Commission and
effective November,1995,this station (BHV-3)was removed from the active air
monitoring program.At that time,IUSA proposed (and the NRC determined)that a
sufficient air monitoring data base had been compiled at station BHV-3 to establish a
representative airborne radionuclide background for the Milling facility.It should be
noted,however,that while air sampling was discontinued at this location,gamma
measurements and soil sampling continue to be collected at BHV-3.
In addition to the environmental air sampling locations described above,a sixth station
(BI-IV-6)was installed at the request of the White Mesa Ute Community.This station
began operation in July of 1999 and provides airborne particulate information in the
southerly direction between the Mill and the White Mesa Ute Community
1.2 Sampling Protocol and Analytical Results
Airborne particulate monitors are operated continuously at each of the high-volume air
sampling stations referenced above.Particulate sample collection filters are gathered by
site technicians weekly in accordance with the Mill's environmental air sampling
procedures and are composited on a quarterly basis for laboratory analyses.The
analytical parameters applied to the collected filters are:Uranium-Natural activity,
Thorium-230 activity,Radium-226 activity,and Lead-210 activity.In addition to the
requisite nuclide determinations,particulate loading is determined for each filter and
composited as a quarterly mass-loading estimate for review purposes only.Fugitive dust
standards for the facility are limited by the Mill's State of Utah air quality permit,which
sets a 20%visual opacity standard.The specific locations of the Mill's airborne
particulate monitoring stations are depicted on the attached figure,High Volume Air
Monitoring Stations (Attachment A).The analytical results of radionuclide particulate
sampling for each monitoring station operated during this January through June,2009
repotting period are provided under separate sampling station attachment tabs beneath
Attachment A to this report (Tabs 1-6).Each Tab contains graphical illustrations of the
nuclide concentrations in log-scale presentation format.The graphs display reported data
over time since the 1981 inception of the Mill's environmental air monitoring program.
1
The actual analytical results (and associated QNQC information)reported by the
laboratory are provided under Attachment B.It should be noted that for graphical
illustration purposes,values reported at zero,values reported at less than the prescribed
detection limit «1 x 10-16 ueilml)and missing values were plotted as 1 x 10-16 uCi/ml
concentrations.Where other "less than"values were indicated (e.g.data where detection
limits varied from 1 x 10-16 uCilm!)the detection limit concentration was utilized for
plotting the data point.The reader should also note that this graphing convention is not
utilized to formulate station average information,nor is it intended as a precedent for data
treatment.Instead,the intent here is to provide a conservative viewable depiction of site
airborne nuclide information.The conservative nature of this format is founded in the
fact that the actual concentration below the detection limit cannot be determined and,as
such,the plotted point is at a higher concentration than the actual activity concentration
of the collected sample.
In accordance with the above,the following environmental air sample station attachments
are provided with this repmi for the period:
•BHV-1,Nearest Resident "Surrogate"Monitor
•BHV-2,North Monitor
•BHV-3,Background
•BHV-4,South Monitor
•BHV-S,West Monitor
•BHV-6,White Mesa Ute Community Monitor
•Radionuclide Data
•Pmticulate Loading Data
1.3 General Observations
Tab 1
Tab 2
Tab 3
Tab 4
Tab 5
Tab 6
Attachment B
Attachment C
The results of environmental air monitoring for this semi-annual period indicate that for
all nuclides at all monitoring stations airborne radionuclide particulate activity
concentrations were well below regulatory Effluent Concentration Limits (ECL's)and
the Companies ALARA goals.It is noteworthy and expected that Pb-210 concentrations
are elevated when compared to the other parent nuclide concentrations (i.e.V-nat,Th-
230 and Ra-226).This phenomenon is due to the well-established controlling effect
experienced world-wide as a result of the ubiquitous presence of radon in the earth's
atmosphere.Accordingly,elevated Lead-2IO presence in disequilibrium with parent
nuclides measured here is not associated with uranium milling operations.
Radon-222 emanates as a decay-chain progeny of the Radium-226 contained in the soil
of the earth's crust and is dispersed generally throughout the earth's atmosphere.The
electrically charged short and long-lived decay products of Radon-222 attach to ambient
dust particles found naturally in the atmosphere and are carried with the air.Lead-210 is
the longest lived of these decay products and is the decay product of the shorter-lived
radon progeny.As such,it accumulates as an electrical attachment on the natural
ambient dust in the atmosphere and is generally measured at elevated activity when
compared to local decay-chain parent nuclide activity,regardless of uranium milling
2
actIvIty.At the Mill's BHV air monitoring stations,all dust (ambient natural and mill
derived)is collected by the sample filter.Because of the natural elevation of Pb-21O
accumulated as an attachment to the naturally occurring ambient dust particles collected
by the air sampling equipment,Lead-210 is commonly elevated and in disequibrium
when compared to parent nuclide activity,regardless of the Mill's presence.By way of
illustration,average ground-level concentrations have been reported for selected States
(NCRP Report 94,1992)and are summarized in Table 1 below,demonstrating elevated
Lead-21O activity where no uranium milling operations are located nearby.Lead-210
activity concentrations can be expected to be even higher for locations in the western
U.S.where uranium ore bodies are commonly located.
Table 1-NCRP Report 94-Global Lead-210 Concentration Example
.......State .Pb-210C()llceritration ......
riBQIM"uCilml
California 600 1.6E-14
Illinois 1500 4.IE-14
Ohio 300 8.1E-15
Massachusetls 700 1.9E-14
1.4 Site Specific Sampling Data
The results of airborne paIticulate monitoring for the period (without background
subtraction)are provided by sampling station and nuclide in Tables 2-5 below.Along
with these data,the tables present comparative Effluent Concentration Limits (ECL's)
and the ECL percentage measured at each of the monitoring stations sampled during the
period.A review of these data supports the conclusion that airborne particulate is well
controlled at the Mill.More specifically,in all cases the measured activity concentrations
were well within the ECL,as well as the Mill's ALARA Goal (i.e.25%of the ECL).In
fact,the data obtained since program inception in 1981 indicates that only one individual
quarterly measurement (TH-230 at BHV-5 for the 2nd Qtr,1996)has ever exceeded the
ECL at the Mill.With regard to this particular single measurement,while it is important
to consider and evaluate an individual measurement exceeding the ECL,for public dose
estimation purposes it is the annualized data that are of primary significance.In this
instance,the annualized Th-230 data for BHV-5 in 1996 are well below the ECL for the
annual period.
In addition to these observations,evaluation of the data by comparison to the Mill's
ALARA Goals reveals that,with very few exceptions,the gross (background inclusive)
measurements also do not exceed the site's ALARA objectives which have been
established at 25%of the ECL (i.e.only 9 of the 2,144 gross nuclide determinations
exceeded the Mill's self-imposed ALARA threshold).It should also be noted that the
analytical laboratory maintained Lower Limits of detection consistent with NRC
Regulatory Guide 4.14 for this reporting period.
3
Table 2-Air Monitoring Station Results V-Nat (Comparison to Limits)
Monitoring 1st Qtr.R.esult 2na Qtr.R.esult Effluent Average
Station (uCilmI)(uCilml)Concentration Percent
Limit(ECL)ECL...(uCi/ml)'·0
BHV-l 2.14E-l5 5.97E-I7 9 E-I4 1.22
BHV-2 3.96E-I6 1.24E-I7 9E-I4 0.23
BHV-4 l.56E-l5 5.56E-l7 9 E-I4 0.90
BHV-5 4.13E-I5 2.3lE-I6 9E-I4 2.42
BHV-6 2.77E-15 1.4lE-I6 9E-14 1.6
Table 3-Air Monitoring Station Results Th-230 (Comparison to Limits)
Moriitoring 1st Qtr.Result 2Dd Qtr.Result Effluent Average
Station (uCilmI)(uCilml)Concentration Percent
Limit (ECL)ECL
(UCilml)
BHV-I I.02E-15 2.35E-I6 2E-14 2.09
BHV-2 l.36E-16 l.46E-16 2 E-I4 0.31
BHV-4 4.57E-l6 2.l7E-I6 2E-14 1.12
BHV-5 l.39E-15 7.79E-l6 2E-I4 3.61
BHV-6 l.OlE-I5 2.76E-I5 2E-I4 2.13
Table 4-Air Monitoring Station Results Ra-226 (Comparison to Limits)
Monitoring 1st Qtr.Result 2M Qtr.Result Effluent Average
Station (uCilml)(uCiltnl)Concentration Percent
Limit (ECL)ECL
(uCil1l11)..
BHV-I I.00E-I5 2.18E-I6 9 E-I3 0.07
BHV-2 I.07E-I6 5.IlE-I7 9E-13 0.01
BHV-4 2.99E-I6 1.5lE-l6 9 E-13 0.02
BHV-5 1.41E-15 6.37E-I6 9 E-13 0.11
BHV-6 7.82E-I6 l.8lE-I6 9E-13 0.05
Table 5-Air Monitoring Station Results Pb-210 (Comparison to Limits)
Monitoring 1st Qtr.Result 2ndQtr.Result Effluent Average
Station (uCilml)(tiCilml).Concentration Percent
Limit(ECL)ECL
(uCilmI)
BHV-I 4.44E-15 5.l3E-15 6 E-13 0.79
BHV-2 4.81E-15 4.58 E-15 6 E-13 0.78
BHV-4 4.97E-15 4.47E-I5 6 E-l3 0.79
BHV-5 4.66E-I5 4.18E-15 6 E-13 0.72
BHV-6 6.46E-15 5.76E-15 6 E-13 1.02
4
1.5 Radon·222
Due to the unavailability of monitoring equipment to detect the new 10 CRF Part 20
standard,and with the approval of NRC,Radon 222 monitoring at BHV stations was
discontinued in 1995.Instead,Denison demonstrated compliance with these limits and
the requirements of R313-15-301 by calculation,authorized by the NRC and as
contemplated by R313-15-302 (2)(a).A copy of the Technical Evaluation Report
evidencing such approval was enclosed with correspondence to the Division on July 28,
2008.
This calculation was performed by use of the MILDOS code for estimating
environmental radiation doses for uranium recovery operations (Strenge and Bender
1981)and more recently in 2003 by use of the updated MILDOS AREA code (Argonne
1998).The analysis under both the MILDOS and MILDOS AREA codes assumed the
Mill to be processing high grade Arizona Strip ores at full capacity,and calculated the
concentrations of radioactive dust and radon at individual receptor locations around the
Mill.
The MILDOS and MILDOS AREA codes calculated the combined Total Effective Dose
Equivalent (TEDE)from both air particulate and radon at a number of locations including
the nearest potential residence (the individual likely to receive the highest dose from the
licensed operation),approximately 1.2 miles north of the Mill.These calculations
revealed projected doses to the individual likely to receive the highest dose from the
licensed operations to be well below the 100 mrem regulatory limit in R313-15-301(l)(a)
for combined air particulate and radon,and well below the ALARA goal of 10 mrem/yr
for air patticulates alone as set out in R313-15-101(4).MILDOS AREA modeling was
also conducted in support of the Mill's 2007 License Renewal Application.More
specifically,SENES Consultants Limited again utilized the MILDOS-AREA code
(Version 2.20~)to estimate the dose commitments at various receptor locations for
processing of Colorado Plateau (0.25%U308 and 1.5%VzOs)and Arizona Strip ore
(0.637%U308).The process rate was assumed to be 730,000 tons per year (an average
of 2,000 tons per day)with an average uranium recovery yield of 94%was assumed.
That modeling showed a TEDE of 2 mrem per year at the nearest resident,which
included the dose from all radionuclide sources,including radon.The dose from radon
itself was therefore a fraction of TEDE and well within the regulatory limits.
While confident that past modeling was sufficiently accurate,it was Denison's belief that
detection equipment had improved since 1995.Accordingly,Denison initiated active
Radon-222 sampling at its air monitoring stations during the first quarter of 2007 as an
augmentation to the calculated results obtained previously by use of the MILDOS
computer code.While active sampling was initiated during 2007,its purpose was to
determine whether or not the sample results can be considered reliable enough to serve as
an evaluative tool to track Radon-222 trends for ALARA purposes.The radon sample
results were not intended as a replacement for the calculated values which demonstrated
compliance with the regulatory limits.As active monitoring progressed throughout 2007
5
and 2008 Denison became aware that there remained difficulties with the precision and
accuracy experienced by alpha track measurements,finding that the results were highly
variable and mostlikely effected by background variability and measurement sensitivity.
As a result,measurements will no longer be included in this report.
2.0 External Radiation (Direct Gamma)
Gamma exposure rate estimates were measured for the first and second quarters of 2008
utilizing passive integrating devices,thermoluminescent dosimeters (TLD's).These
dosimeters were co-located at each of the license-required high-volume air sampling
stations and at the designated background monitoring station (BHV-3).Measurements
obtained from location BHV-3 have been designated as background due to BHV-3's
remoteness from the Mill site and attendant lack of potential for exposure from the Mill
operation (i.e.BHV-3 is located approximately 3.5 miles west of the Mill site).The
results of the environmental TLD measurements and semi-annual cumulative above-
background data are provided in Table 7 below.In addition,measurement data obtained
at these locations are graphically presented at Attachment D to this report.
Table 6-Environmental TLD Measurements (Gamma)
Monitoring 1st Qtr 2nd Qtr 1st Qtr 2nd Qtr.Cumulative
Station Result Result Result Less Result Less Semi-
(mrem)(mrem)Background Background Annual
(mrem)(mrem)Estimate*
(mrem)
BHV-1 42.5 33.7 9.1 4.9 14
BHV-2 35.4 33.3 2 4.5 6.5
BHV-3 33.4 28.8 NA NA NA
BHV-4 30.6 28.9 -2.8 0.1 0.1
BHV-5 35.1 31.7 1.7 2.9 4.6
BHV-6 54.7 30.2 21.3 1.4 22.7
*Negative values treated as zero for cumulative dose
The results for this period indicate that above background measurements for stations
BVH-1, BVH-2,BVH-4,BVH-5 and BHV-6 are within regulatory limits.The first
quarter values indicated at BHV-1 and BHV-6 were anomalously elevated and
inconsistent with previous data at those locations,even during mill processing
campaigns.It is suspected that in transit exposure is the possible cause for these
readings.This supposition is supported by the elevated values show for the control badge
for the period.With the exception of these two readings,the exposure rates indicated
are approximate to the background values measured at BHV-3.The annual individual
member of the public (IMOP)limit is 100 llli"ernlyr at the property boundary for
combined internal and external exposure.
6
3.0 Vegetation Samples
Vegetation samples are collected at three locations around the mill periphery.The
sampling locations are:1)Northeast,2)Northwest and 3)Southwest of the Mill facility.
The vegetation samples are collected during early spring,late spring and fall (e.g.the
growing seasons).Graphical log-scale presentation of the vegetative radionuclide uptake
observed for this reporting period and results reported by the analytical laboratory
(including QAJQC information)are included at Attachment E of this report.The early
and late spring 2009 data compared to the results of previous are within the variation of
previous sampling episodes.It should be noted that vegetation samples in some prior
years were collected during a period of severe drought in San Juan County.For this
reason sampling was dramatically affected due to the scarcity of available vegetative
species at the respective sampling locations.Regarding lower limits of detection,all
analyses indicated detected concentrations.
4.0 Stack Sampling
Processes involving effluent control equipment and associated stack emissions (i.e.,the
yellowcake dryer,yellowcake baghouse and the grizzly)were operating during the 1st and
2nd Quarters of 2009.As reported in the July-December period stack samples collected
during the 4th Quarter of 2008 did not meet required detection limits.As such,samples
were recollected on December 29-30,2008.Due to the fact that Denison's Laboratory
Contractor had been unable to meet Denison's detection needs (despite the collection of
an 8 hour iso-kenetic sample),Denison sought the services of other laboratories to
analyze stack samples from the Mill.Toward this end,Denison contracted with the Test
America Lab in Richland,Washington to resolve the detection issues.Because Test
America also experienced difficulty when they first issued the analytical data (in this case
related to reporting units)Denison required re-evaluation of the data and proper reporting
as uCi/sample.Since the process with Test America was somewhat experimental in order
to determine how to meet the detection needs,iterative to assure that proper methods
were being employed,and because Test America had to re-evaluate the determinations
and report results as activity per sample,the final results of these samples were not finally
issued until June 9,2009.Accordingly,the data were evaluated by Denison as an aspect
of this report and are included with the results for 1st and 2nd Quarters of 2009.It should
be noted that virtually all nuclides were detected by Test America in each of these
sampling episodes.
The analytical results of stack sampling conducted for the 4th Quarter of 2008,1st Quarter
of 2009 and 2nd Quarter of 2009 are provided in Table 7 below,indicating the uCi/cc
concentration in the stack emissions and the stack's radionuclide release rate (uCi/sec)
for V-Nat,Th-230,Ra-226 and Pb-2IO at each of the stacks sampled.The actual
analytical results reported by the laboratory are provided in Attachment F to this report.
It is important to note that stack effluent concentrations are not comparable to
environmental air sampling station ECL's for regulatory compliance purposes.The ECL
is a limit that applies to the site boundary locations and is not applicable to effluents from
mill processes on the Mill site.These stack release data are more appropriately utilized
7
for dose modeling purposes and dose modeling is not computed for semi-annual reporting
purposes.
Table 7-Stack Effluent Concentrations and Release Rates
V-Nat V-Nat.Th-230 Th-230 Ra-226 Ra-226 Pb-21O Pb-210
u/Cilec uCi/sec uCi/cc uCi/sec uCi/cc uCi/sec uCilcc uCi/sec
...
4th Qtr,2008
North YC Dryer,Run I 1.59E-9 9.88E-4 9.12E-14 5.68E-8 2.57E-14 1.60E-8 2.53E-12 1.58E-6
North YC Dryer,Run 2 2.15E-9 1.39E-3 1.03E-13 6.64E-8 3.82E-14 2.47E-8 3.29E-12 2.13E-6
Grizzly Baghouse 7.57E-13 4.04E-7 I.85E-13 9.88E-8 1.94E-13 1.03E-7 3.47E-13 1.85E-7
Yellowcake Baghouse 1.28E-8 1.28E-2 1.5E-13 1.50£-7 3.80E-14 3.80£-8 3.80E-14 3.80E-8
1sT Qtt,2009
North YC Dryer,Run 1 1.94E-9 8.33£-4 1.14E-12 4.91£-7 5.12E-14 2.20E-8 1.12£-12 4.8IE-7
North YC Dryer,Run 2 1.60E-9 6.51£-4 7.6£-13 3.IOE-7 3.45E-14 I.4IE-8 1.05E-12 4.29E-7
2nd Qtr,2009
North YC Dryer,Run I 4.49E-1O 2.31E-4 3.70E-13 1.90E-7 3.6IE-14 1.86£-8 5.60E-13 2.88E-7
North YC Dryer,Run 2 9.26E-1O 6.07E-4 3.59E-13 2.36E-7 2.60E-14 1.71£-8 8.68£-13 5.69E-7
Grizzly Baghouse 1.28E-II 6.50E-4 2.32E-13 2.36E-7 1.81E-13 8.12E-8 3.46£-13 1.55E-7
Yellowcake Baghouse 5.81E-1O 6.07E-4 4.1£-12 4.59E-6 2.88E-14 3.22E-8 2.86E-13 3.20E-7
5.0 Surface Water Monitoring
Surface water samples were collected from Cottonwood Wash during the 1st and 2nd
Quarters of 2009,however,Westwater Creek was not able to be sampled because it was
dry for the quarterly sampling events.The analytical results and graphical representation
of the data are included in Attachment G to this report.In addition,Attachment G
includes the attendant QAlQC information accompanying the laboratory's report.
Cottonwood Wash is an intermittent ephemeral drainage located southwest and down-
gradient of the Mill complex.Radionuclide data (U-Nat,Th-230 and Ra-226)do not
indicate trending over time nor are influences from the Mill operations evidenced by the
reported data..
6.0 Soil Sampling
Annual soil samples are collected by the Mill staff during the third quarter of each year
and are,therefore,not reported for this period.
8
6.0 Meteorological Monitoring
As in prior reporting periods,an independent contractor has prepared the White Mesa
Mill Semi-annual Meteorological Monitoring Report for the period of January through
June,2009.This information is retained at the Mill site for agency review.
9
Attachment A
Property Boundary
Reservation Boundary
!!!'!ll!e_nftll'l!l!l Canyon Rim
(\Air Monitor
Stations
2000
I
Denison Mines (USA)Corp.
""""WHITE MESA MILL
lJr-
HlghV6lume
ArMon~omgSlallons
Tab 1
~..
"
::::-:§o:::J-tJ)
I:o:;:res--I:Q)
(.)
I:oo
Q)
:2
(.)
:::JI:.2
"Cresa:,....:>J:m
4 -.~-~
~&11
~t..~-•"F--N ~I~j",I+:::-•l""::::
•D
f-66 \II~.,..
1iI~
~h..~...Pill
~
•:::::I
1-==I-r:III~
t 1+ftIII
h.IffI-.
~~
I_t;.14 f-.....
~~~
ItI:::.1-~•Nr;::~~~~-~~III ill
I~r.~I~~~~=..I~t..~_.....
~::.."}
~E::-.r-=:::::::.0I~'"t .....
F:::I~~~t:Ik ~
l.-t-t:t::=5a'1
~IJ ~~
,....C\l C")'<t to (0 l"-eo,....,....,....,....,....,....,....,....
I I Li.J Li.J I I I IWWWWWUJ00000000C!C!C!C!C!C!C!C!,....,....
(aleos 601)
BO-deS
La-deS
90-deS
90-deS
va-deS
so-des
Go-des
~o-des
OO-deS '<tenQ)
'C
66-des Q)(f)
B6-deS t
C')
L6-deS en.!!l
CD
96-deS (f)t96-deS C\Jen
v6-deS Q).~
(f)
S6-deS T
G6-deS (ij
.!!l
~6-des CD(f)
06-deS t
6B-deS
BB-deS
LB-deS
9B-des
9B-des
vB-des
SB-des
GB-deS
~B-des
1.00E-11
Effluent Concentration Limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit ==5E-12uCilml
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
BHV-1 Uranium-Natural Concentrations (uCilml)
1.00E-12
1.00E-13
'G)1.00E-14
"iii(,)
(J)
Clo
::"1.00E-15
1.00E-16
1.00E-17
..Jl[
~\1\/\I ~.~\..1\
~\I·I
.,.'I ...~~II
•"JI'•~v,I ....••~\v.,...-.....I \\T ...'Jl ,.1\j ......y<,,{
\r"vv \N \.1 V \1 J\J~u
1.00E-18
~~~-~~~~~~~~~~~~~~~~~~~~~~~~~~~~'P ~~~~~~9-l 9-l 9-l 9:S 9-5 ~9-l 9:S 9-5 ~~~~>S }5 ~~>S~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1.00E-11
Effluent Concentration Limit =2E-14
uCi/ml
ALARA Goal =5E-13 uCi/ml
Pre 1994 MPC Limit =8E-14uCi/ml
BHV-1 Thorium-230 Concentrations (uCi/ml)
1.00E-12
1.00E-13
~1.00E-14
ellto)en
Clo
d1.00E-15
1.00E-16
1.00E-17
,
...•,\fl 1'a.
If f /~\""~~~
""....l'•I •lit
j / /..~\/\//~/\+1\•~I.
l.~J ~V·"~~j V.V\.~\l\.fVV.
JI.
1.00E-18
rtJ....rtJ~rtJ~~rtJ<O rtJfo ~rtJttJ rtJO)9.>()9.>....9.>~9.>~~9.><0 9.>fo ~9.>ttJ 9.>0)~()~....~~~~~~<o ~fo &-~ttJ############################
Effluent Concentration Limit ::=9E·13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit::=2E-12 uCi/ml
Pre 1994 ALARA Goal =5E·13 uCi/ml
BHV-1 Radium-226 Concentrations (uCi/ml)
1.00E-11
\
,
.....,
N\A ~,...it ~'-....It t
........,.......
I V \\j V T'"""{•V \6 I \•1\•.f
\l \•;~I ~~.¥\l ~j\"N\.J\.A.J"
Ir•
,
1.00E-12
1.00E-13
1.00E-16
1.00E-17
1.00E-18
~"~'1-~O:J ~~~~(Q ~~'O ~O:>g,(;)g,"g,'1-g,O:J g,b<g,~g,(Q ~g,'O g,0:>s;:P s,)"s,)'1-s,)O:J ~s,)~s,)V:J s,)'\s,)'O##############~~~~~~##~#~~##
-;-1.00E-14
(ij
(,)
(J)
C)o
:::'1.00E-15
1.00E-11
Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA Goal =1E-12 uCi/ml
BHV-1 Lead-210 Concentrations (uCilml)
1.00E-12
1.00E-13
a;-1.00E-14
iii(,)en
Clo
:::!.1.00E-15
1.00E-16
1.00E-17
11"
~J \1\1\I ~\ff A .L \1\It 1It 1\...,..\~ftJ~V T'\/~.....~~~A J \~...•....
..•Jl
\11 1
~~
1.00E-18
Cb.....cf}0/cS"ek>CbCO .fi.Cb'O CbO)o.>~0.>.....~0.>";)~*o.>CO ~0.>'0 0.>0)':::>~':::>.....,:::>rv ':::>";)~~,:::>CO ~,:::>'0(b<::l (b<::l (b<::l (b<::l (b<::l (b<::l (b<::l (b<::l (bQ.(b<::l (b<::l (b<::l (b<::l (b<::l (b<::l (bQ.(b<::l (b<::l (b<::l (b<::l (b<::l (b<::l (bQ.(b<::l (b<::l (b<::l (b<::l (b<::l~~~~~~~~~~~~~~~~~~~~~~~~~~~~
LOCdtion;SHY-I
!URANlUMNAT THORIUM-230 RADIUM·226 LEAD-210
PERIOD GriOSS ttD "GROSS COUNTING lLO %O"'OSS COUNm:G ltD %GROSS COUNTING ttD %
ENDING CONG.~Cilc~(1E-16)MPC·CONe I'Ci:cc ERROR (IE_16)MPC'COt>t;·lJCi'cc ERROR (lE'16)MPC'C:ONC."Ci.'cc ERP.oR (lE-l6)MPC-
28-Sep·81 235E·15 5E·17 4.70E-02 7B2E·16 2,75E'16 IE-16 2.61E-ol 1.I))E-15 1.24E·16 IE-16 5.3OE-02 2.57E-14 1.52E-15 2E-15 3.2lE{)1
14·0ec-81 1.56E-IS SE·17 3.12E-02 1.49E-15 2,10E·16 IE-t6 4.97E·01 L93E-15 3.34E-15 IE-16 9.65E-{)2 2.64E-14 2.28E-15 2E-15 3.30E·Ol
2'Hkr-82 216E·15 SE'16 4.32E·02 2.93E-15 1.15E·15 3E-15 9.77E·01 1.16E-15 5.78E-16 4E-15 5.&E-02 2,09E-1<I 2.'6E-15 2E·14 261E-Ol
3O-Jun-82 4.69E·I5 IE·16 9.38::-02 34SE·IS 328E·16 IE-l0 1.15E,OO 2.381'-15 4.77E-16 5(:-16 l.IS(-<l1 2.14E·14 3.l0E-15 5E-15 2.65E·01
27-Sep'82 4.45E·15 1E-16 8.90:::-02 3.2:9E-15 4,76E'16 IE-15 1.IOE-I-00 3.23E-15 4.02E-16 lE-16 1.62E.QI 1.99E-14 3.WE_15 2<:-15 2A9E--01
3·Jan-83 4.39E·15 5E·17 8.1SE-02 5.91E-16 1.34E-16 7E'17 1.97E-<11 9.14E-16 1.03E-16 5E-17 4.57E-02 4.87E-14 2.70E-15 2£-15 6.09E-{)1
"I-Ap,-S3 7.SIE·16 SE·17 1.50E-02 2.1JC-16 3.0SE·11 2E-17 7.fOE-02 3.20E-16 7.63E-17 5E-17 1.60E-02 I.88E·14 l.ooE-15 9E-16 2.35E-{)1
3O-Jun·f!3 26SE-16 5E-17 5.36E--<l3 6.92£-16 1.32E·16 9E·17 2.31E-ol 7.92E-16 I.32E-16 lE-16 3.96E-02 2.ooE-14 2.ooE·15 IE-15 2.50E-OI
3·0el·83 SarnpieLos!
3-Jal'l-84 2.87E·15 lE-16 5.74E--<l2 L14E-16 4.9l!E·17 Be-17 3.BOE{)2 I.79E-15 7.69E·17 IE-16 8.95E-oJ I.06E-14 I.99E-15 2E-15 1.33E.{)1
2-I'.pl·S4 159E·15 SE·17 3.18E·02 3.4CE-16 1.01E-16 3E-17 U3E-ol 3.71E-16 7.80E·17 7E-17 1.86E-02 3.34E-14 1.69E-15 IE-15 4.18E.()1
2-Ju!·8-4 3_1CE·15 6E·17 6.20E·{)2 1.00E-15 3.59E-16 3E-16 3.33E·01 :2.09E-15 229E·16 IE-16 1.0SE'01 I.8aE-14 I.lOE-15 9E-16 235E-ol
1·0el-84 6.4~E·16 ~E·17 1.28E-02 1.39E·16 1.17E·16 7E·17 4.53E.Q2 1.94E-16 1,11E-16 9E-11 !HOE-Q3 1.85E-14 1.39E-15 110,15 2.31E·OI
2-Jan--85 5.ooE·16 SE·16 1.01E-02 4.56E-16 2.26E·16 2E·16 1.52E·Ol 3.49E·16 1.32E-16 IE-16 1.7SE-02 3.03E-14 1.17E-15 7E-16 3.79E·01
l-Apr-85 0.00:-1-00 5E-17 O.OOE~OO 1.23E-15 2.52E·'6 4E·17 4.1OC-ol 4.85&15 1.09E-16 9E-17 2,44E{)2 8.06E-15 8.99E-16 BE-16 1.01E-ol
1-Jul·8S 7.17E·16 5E-17 1,-'l3E·02 O.OOE..OO 4.7<:E·14 IE-16 O.ooE-I-oo 1.05!;:-15 1.5OE·16 7E-17 S.2SEJJ2 2.1SE-14 1.32E-15 81"16 2.69E-ol
30-Sep·85 6.13E-16 SE-I$1.23E-02 1.I8E-16 1.ISE·16 IE-16 3.95E-'l2 3,71£-16 8.56E·17 7E-1?1.85E-02 3.6olE·15 6.61£·16 !lE-IS 4.SSE·02
2·Jan·86 3.42€-15 SE·16 6.84E-02 4.74E-16 ~DIV/O!2E·16 1.58E-'l1 1I0IV!(1.O.OOE-I-OO 2E-16 IIOIV!O!IIDIV/O'1I00WO!2E-15 1I01VlO!
1-Apr·a6 3.98E-15 2E·18 7.96E--<l2 9.74E-16 2.05E·16 5E·18 3.25E--<ll 1.5OE-15 2.07E·16 4E-18 7.51E--02 1.41E-14 ~.06E-15 lE·15 1.76E-{)1
30-Jl-".,·£6 5.51E-17 lE-n I.lOt-03 :J.S2E-16 3.13E-17 2E'18 1.17E-<l1 1.37E-15 3.0IE-11 4E'18 6.87E--02 1.23E-14 6.0IE-16 5E-16 1.5~E-ol
27-Qcl.$1.99E-15 lE-18 3.98E-02 3.06=-16 a.00E-17 3E·18 1.02E.ol U5E-15 1.00E.16 2E-18 6.25E--<l2 ~.OBE-1.01 2.00[-16 4E-16 135E·Ol
1S:·0ec·86 1.67E-15 3E-18 3_34E-02 1.16=-16 4.00E-17 2E·17 3.87E-02 5.S8E-16 l.OGE·16 ~E·17 2.99E·02 1.37E·14 2.ooE-I6 3E-17 1.7IE·Ol
16·Ma,t-!)7 2.33£-15 3£-18 4.66E·02 4.30E-16 !WOE-t7 6E-l!)1.43E-ol 1.92E-16 5.00E·17 SE·18 9.60::·03 5.59E-14 1.0JE-15 8E-13 6.9SE-{)1
11·Mily·!)7 2.36£'15 !Je'-18 04.72E·02 7.69E-16 1.6OE.-16 5E-18 2.56E-Ol 8.76E·16 1.00E·16 SE·18 4.38::-{)2 1.45E-14 3.OJE-16 3E-17 1.81E-ol
9·Sep-87 2.27E-15 IE-19 4.54E-02 2.44E-15 2.0GE-16 6E·18 8.13:;.01 8.SIE-16 HOE·16 4E·18 4.2SE-{)2 3.14E-14 S.l»)E-l(j 8E-I8 3.93E·Ol
2·Nov-87 2.7&:-15 IE-11 5.50E-{)2 2.46E-15 3.00E-16 lE·11 6.20::-01 1.34E·15 2.ooE·16 lE-17 6.70E-02 2.79E-14 1.l))E-f5 5E·17 3.4SE{)1
16-Feb-es 1.07E-15 SE-IS 2.14E·02 1.47E-16 5.00E-17 2E·17 4.90E-02 4.44E·16 5.ooE-17 3E·17 2.22E-<l2 ~.01E-14 2.0JE-16 5E-17 5.01E-ol
18-May·88 1.98E-15 3E-18 J.S6E-Q2 1.25E·IS 1.00E-16 2E·17 4.17E--ol 6.40E·16 7.ooE·17 lE·17 3.20E--<l2 1.07E-14 1.ooE-15 3E-17 1.3'lE-ol
15-Aug·6B 2.06E-15 3E-18 4.1210-0:>3,41E-15 2.00E-16 lE·17 1,14£-1-00 5.ooE·16 6.00E,17 2£,17 2.54E-02 1.62E-14 3-00E-16 2E-\1 2.03E-ol
14-NoY'88 3.94E-1S 3E-t8 7.£8E-{)2 2.12£-15 1.00e:-16 IE·17 7.07E·Ol I.OIE-15 5.00E-17 lE·17 5.0SE-02 2.47E-14 1,OOE-15 3£-17 3.O$E.oI
1J-Feb-S9 1.S9E-15 4E-17 3.S8E-(}2 5.73E-16 7.8SE-17 lE·16 1.91E-Ol 5.99E·16 3.49E-17 2E-16 3.OOE{l2 3,23E-14 2.36E-15 5E-I6 4.04E-ol
15·May·69 1.70E·15 7E-18 3.«IE--<l2 6.32E-16 7.00E-t7 7E·18 2.11E--<l1 586E·16 5.ooE-17 7E-18 2,93E--<l2 6.16E-15 l.ooE-15 3E-17 7.7OC-02
14-Au;HJ9 2.31E-15 2E-18 4.62E.(J2 2.31E-16 3.00E-17 eE·18 7.701:-02 In£·16 5.0QE-17 6£'16 8.BSE-03 7.65E·15 l.ooE-16 4E-17 9.55t:--<l2
13·Nov-89 4.72E-15 2E-17 9.44E-{)2 1.71E-15 2.00E-16 3E·18 5.70E-01 152£·15 2.00E·16 6E·18 7_61E-02 1.89E·14 3.00E-16 2E-17 2.J7E-<l1
12-Feb-90 3.44E-16 3E-18 6.88E-03 8.39E-16 1.00E-16 €E:'Ia 2,80E-Ol 831E·16 8.00E-17 2E·17 4.1615-02 2.57E·14 3.00E-16 5E·17 3.21E{ll
I·H.lay·5'Q 3.03:;·15 1':'16 6.06E--<l2 1.47E-15 2.00E-16 IE·16 4.90E--ol f.Q.lE·15 1.QOE-15 IE-16 5_20E-02 1.79E-14 3.ooE-16 2E·16 2.24E-ol
13·Jl.u0·90 1.64:=·15 IE-16 3,28E.(J2 1.49E-15 7.001:-17 IE·16 4.97£-01 3341;·16 5.00E-17 lE-16 1.67E-02 8.27£-15 2.ooE-16 2E'16 I.OJE-ol
12-I\'o~',90 IA8E-15 tE-16 2.95E--02 7.50E-16 1.10::-16 lE-16 2.50E-ol 580E-16 7.1)OE·17 lE·16 2.90E-02 ?15E-14 4.ooE-16 2E·16 2.70E-Ql
l'-feb-91 1.9OE-16 lE-16 3.80E-<l3 3.48E-17 2.10::-17 lE-16 1.16E·02 7.91E-17 2.30E-17 IE'15 3.96E-03 3.79E-14 1.00£-15 2E-15 4.74E-01
13'~i1Y'91 3.42E-16 lE-16 6_84E-(J3 I.34E-15 1.00E·,5 IE-16 U7E-<l1 7.39E·16 9.00E-17 lE·H'3·70E-02 1.45E·14 1.00E·15 2E·15 1.83E-01
12-AulJ·91 <'.nE-16 lE·16 5_54E--03 417E-17 8.ooE-18 lE'16 1.;)9E-<l2 1,45E'16 7.00E-17 IE'16 7.25E·03 1.80E-14 3ooE·16 2E·15 2.25E{)\
ll-Nov·91 6.65E-17 IE·16 1.33E-{)3 9,13E-17 3.00E-17 2E-f7 3.()4E-<l2 2,77£·17 2.00::-17 ::F..\7 1.39E.{I3 10i>F.-14 2ooE·16 IF.·16 1.33E-ol
10-Fet·92 1.94E-16 IE·16 3.89E--03 4..28E-17 3.00E·17 2E·17 1....3E-02 4.0~E·17 2.20E-17 2£-17 2.04E--<l3 3.5IE-14 6ooE-li'IE·16 4.WE·Ol
11-!V'-ily-S2 2.~E-16 1E-16 ~.06E..()J 6.~9E-16 5.ooE-17 2E-1S 2.16E·OI 6.86£'17 4.00E-17 2E·19 3.43E.(I3 1.38E·14 200E·16 ,E-18 1.73E--ol
10·Avg-92 1.73E-16 2£-18 3.-15E-03 1.55E·16 4.00£0'17 4E-18 ~.17£--<l2 1.2C,E·16 6.00!:-17 2£-16 6.ooE·03 1.53E-14 200E-16 2E·17 1.!HE-Ol
9·N(lv·92 1.56E-16 3E-18 3.12E·03 3.19E-17 2.\OE-17 4E-18 1.06E.(I2 4.9CE·16 2.2OE·17 3f.·lf,2-'15E·04 1_86E-I~200E·16 2E17 2.33:-01
g·Feb·93 2.10£·\6 IE-18 4.20E-03 o.OOE+OO 4.60E-17 4E-18 O.ooE-I-oo 3,8SE-17 7.30::-17 3E-11!.I.SSE·03 2.52E·14 4,CKlE·16 2E·fj'3.15=-01
lo-t....a~··93 O.ooE..oo 3E-18 O.ooE~OO 4.11E·17 3.60E·17 -1E-18 1.37E-{l2 5.43E·17 4.00'=-17 3E-18 3.22E-(·3 1.26E-14 2.00E·16 2E·1J 1.56E·Ol
IO-Aug·93 2.3010-16 2E-:8 4.60£·03 6.00E-17 5,00£-17 4£-18 2.COE~2 6AJE-17 8,IOE-17 3E-1Il 3.22E-Q3 1.60£'14 2.ooE·16 2£·li 2.00E-01
B-Nov·93 O.ooE-I-oo 2E-18 O.OOE~OO O,ooE-I-(>O 5.60E-17 4E-16 O.OOE..OO 0.001:.00 1.00E-16 3E-18 O.OOE.o.C<1 1,57E·l~3.00E·16 ~E·17 1.96£-{ll
7-Feb'9~1.62E-16 3E·21 3.03E·Ol 5.ooE·18 6.ooE-:7 4':;-18 1.67E-{l2 4_3(;E-17 1.60E-16 JE-f8 V6E.(J3 2,59E-14 5.00E·16 2E·17 4.32E-I-00
9-May·94 3.60E-16 2E-17 6.Qo}E-oI 2.70E-16 1.10E-16 4:'.:-17 9.00E.(JI 2.81£-16 1.00E-16 3E-17 3.19E-02 1,60E-14 3.00E·16 ~E·t6 2.67E-I-OO
g·A<:g.Q4 4.04E-16 lE-16 6.73E·OI 2.70E-16 8.71(-17 lE-16 9.00E-ol 2.94E·16 2.90E-17 lE-16 3.21E-02 2ooE·15 UKE·16 .2E·15 3.33E--<l1
7-Nov-94 9.18E-I7 IE-16 1.53E·Ol 3.60E-16 4.42E-I7 lE-16 120E.C{J 291E·16 2.45E-I7 lE·I6 3.23E.{l2 2.00E-15 7.6\E-17 2E'15 J.33E-ot
7-F~b--95 1.71£,16 lE-16 295E..()1 9.70E-17 l.ooE·16 lE·16 3.23E·Ol g.7GE-17 1.00E-16 IE-16 1.08E{)2 8.60E·15 3.76E-16 lE'15 1.43£..00
g·May·95 9AOE-17 IE·22 1.57E·Ol 5.36E-16 4.39E-17 IE-16 1.79E..00 1.60£:'15 7.17£·17 IE-16 \.78E·Ol 384E-IS 2.05E-16 IE-IE 5.-'10£-<11
9·Avg·95 2.70E-16 IE'16 4.50E·Ol I.GOE-16 1.5OE-17 lE~HI 5.33E-ol 2.76e>16 4.68£'17 IE-16 3.07E-Q2 376£·15 2.6fE·t6 2E'15 6.27E-<l1
II·N::lV·95 4.WE·IS lE·16 8.ooE-00 6.4IE-16 5.75E-17 2E-_16 214E-I-00 8.93£-16 01.24E-16 2E-16 9.9210·02 S20E 15 2ACE·16 1[-1~6.67(;-01
5-FEb-96 5.34E-15 lE-16 8.9GE+OV 2.30E-15 1.30E-16 IE·16 767E-I-00 1.30E-15 7.80£-17 lE-16 t.ME-{)1 420E·15 3.04£·16 1£-16 7.00E·Ol
6·May·96 5.1IE-16 lE-16 8.52E{)1 3.06£-16 2.9O£-t7 IE-16 102E.00 1.40E-16 9.67E-18 lE-16 1.5SE-Q2 7.03E·15 5.54E-16 lE·16 1.17E..00
5·Au9-%5.~E·I6 lE-16 9.961:-01 155£-15 7.65E-17 lE-16 5.17E.OO 2.0JE-16 2.83E-17 lE-16 2.26£'02 5.94£·15 3.05£-16 IE-16 9.90E{)l
6-Ncv,S6 3.~E·16 lE-16 5.63E·OI 5.45E·16 4.85:=-17 11"_16 1f12E.0')1.00E-16 NA lE·ll~1-11E-02 122E-H 4.53E-IG lE-16 2.03£..00
6·Feb·97 l.ooE-16 1£-16 1.67E-ol 1.25E-16 V17E-17 lE-15 4.17£-01 1.28=:-16 1.54E-17 lE-16 \.42E-02 5.68E-15 2.8SE-16 lE-16 9.47E-{)1
5·M&y-97 1.09£'16 lE-16 182E-ol 1.0JE·16 NA lE-16 3.33E·{}1 1.00E-16 NA IE-16 1.lIE-{)2 4.39E·15 2.S6E~1€lE-16 7.::.2E-tl\
II·AlIg·97 2.88£'16 1£-16 4.80E-ol 3.83£-15 ".14£-17 lE·16 1.23E.00 f.~2E-I6 1.49E-17 IE-16 2.02E-02 S.29E·15 2.84E-16 IE-16 8.82E-tll
5-Jan-98 3.24E-16 lE~16 540E-ol 3.47£-15 NtA lE-16 .,115E.00 1.19E-I6 "'A IE'16 1.33E-02 4.7~E·IS NiA IE-16 7.€-8E-61
28·Apr·9S 4.75E-16 IE-16 792£-01 6.73E-16 3.18E_I7 IE-16 2.24E.00 5.69~-16 4.08E-17 lE-16 6.32E-02 5.94f-15 2.92E-16 IE·16 9.ooE--01
31-JtJl-98 8.84£-16 IE-16 982e·Ol 1.93E·15 NtA lE-16 6.43E-I-00 1.43:::-15 6.65E-17 lE-16 t.59E-{)1 5.2'<£'15 3.33E-16 IE-16 8.70E-Ol
28'Scp-9&2.8IE-16 IE·16 312E-ol 2.69E-16 2.57E·17 1E-16 9.6-1E-ol 1.80£-16 9.07E-18 IE-16 2.0JE-02 4.64E·15 2.24£-16 IE-16 1.73E--<l1
28·Dec·96 8.ooE-16 lE-1S.897E·OI 4.93E-15 2.42F._17 lE-16 1.6~E~O)5.0110-16 3.63E·17 1£:·16 5.51E-02 LOSE-14 2.56E-Hl IE-16 1.76E+00
29·Mar·99 2.00E-16 1£-16 2.29E·01 2.06E-16 IJiBE-17 lE-16 6.86E·Ol 1.42E·16 7.62E-18 lE-16 I.5aE-02 6.69E·15 2.99E-16 lE·IS 1.12E-I-00
3-JiJ-99 5.31E-16 lE-16 S.90E{)1 2.47E-16 I.68E-17 1E-16 8.24E-{)1 2.23£-16 2.29E-17 lE-16 2,46E-02 6.44E·15 3.06E-16 IE~16 1.07E+00
27·s.:p·99 6.90E-16 lE-16 9.97E·01 3.90&16 2.74E-17 H:~10 l.30E~()J 2.96E-16 2.90E-17 lE-16 3.29E-02 7.29E-15 3.19E-16 lE-16 1.22E..00
28-Dec·S9 1.48E-15 lE-16 1.64F..00 60010·16 5.16E-17 lE-16 2.00£.00 5.57£'·16 ~.57E-f7 lE-16 G.19E{)2 6.19E-15 3.~-16 IE-16 1.0JE-I-W
27-Mar-QO <1.00E-16 lE-16 <1.I1E-OI 1.06E-16 1.12E·11 lE-16 3.S5£-<)1 <1.00E-16 "A lE-16 1.lIE--<l2 6.23E-15 290F._16 lE_16 1()-4E~CO
26·.h!n-QO 3.47E-16 lE-16 5.76E-01 3-46E·16 3.53E-17 fE-16 1.l!;E-Ol 3.62E-16 3.99E·17 lE'16 4.02E{)2 4.50E-15 3.S3E-17 1:::-16 7.50E·OI
26-$cp-oO 2.51£-15 IE'16 2.7:2E·{11 1.76E-16 6.401::-18 lE-16 5.93E-ol 3.25E-16 8.40E-18 1E-16 3.61E-02 8.55E-15 2.06E-16 iE-I6 1.43E~00
.26-DcC-OO <I.OOE-16 IE-16 0.00£..00 1.<l2E·16 9.8::1E-16 lE·16 4.73E·OI 1.31E·16 04.20E-18 lE-16 1.46E·02 7.nE-IS 2.28:;-16 lE-16 1.30E-I-00
.26-Mar-ol 3.IOE-16 lE-16 3.45E-ol <1.CIOE-15 If-16 <3.:"'""<1.00£·15 IE-16 <U1E 719E-15 3nE·16 IE-16 l.20E~OO
29·.1IlI--01 1.52£-\6 lE-15 1.6SE-Ql 1.44E-16 7.15E-16 IE-16 4.79E{)1 I.nE-16 h"A lE-16 1_97E-02 7.2IE-IS 1.27£-16 lE-16 1.20E+00
24-Sep-<l1 1.03£-16 IE-15 1.15E-ol <1.0010-16 NA IE-16 <3.33E-Ol <1.ooE-16 "A lE-15 <1.IIE-(',2 8.09E-15 1.68E-16 lE-16 1.35E~OO
31-Dec-QI <1.ooE-16 IE-16 --:1.1IE-01 <1.ooE-16 NA lE'16 <3.33£-01 <1.00E-16 NA IE-16 <l.lIE-<l 139E-15 1.59E-16 lE-16 2.321:-01
1·Apr·()2 2.05E-16 IE-16 2.28'E<l1 2.44E-16 3.03£-17 IE-16 8.13E-ol 2.29E-16 2.45E-17 lE-16 255F.·02 815E·15 1.64E:_16 110_16 1.36E.00
l-JuH)2 3.$5£-16 IE-16 3.94E-{)1 4.B5E-16 3.75E-17 1£-16,1.62E.OO 1.06f-16 2.9gE-18 1E-16 I.17E·02 7.65E·15 1.79E-16 IE-16 1.26E.00
3O-Sq.l-<l,2 1.17E-16 IE-16 I.~E-ol 1.61E·16 1.15E-17 lE-16 5.37E·01 <1.00£-16 NJA lE-16 ·&0111 368E·15 9.52E-17 1£-16 6.13E-01
3/)·Dec.(J:!<1.00E-16 IE-16 <1.11£--<l1 1.00E-16 R66E-1S 1(-16 3..43<:::-<11 <1.00E-16 N.·A lE-16 <:0.0111 946E·15 1.69E-\6 1£-16 1.58E~OO
31-M3r·03 1.2OE-15 IE-16 1.33E-ol 1_12E-16 1.43E·17 IE-16 3.91E-{)1 <l.OOE-16 N!A 1£-16 <0.0111 46SE·15 1.19E-16 lE-16 7.80E·Ol
3O-.lur1·03 2.18E-16 lE-16 2.42£:-01 3AOE·16 2.58E·17 IE-16 1.13E-I-00 1.57£-16 2.ooE-17 IE·m I.-85E-o 5,96E·15 I.39E·16 110-16 9.94E-ol
29-Sep.(J3 <1.ooE-16 lE-16 <:1.11E-OI <1.00E-16 NA lE-16 <3.33E--<l1 <1.00E·16 "'A IE-16 d).0111 7.28E-15 L89E-16 lE-16 1.21E~OO
29·Dec.i)3 <,-COE_16 1l::·16 <:1.IIE·OI 2.54E·'6 1.15E-17 1(0-10 8.'8E.Ql 3.35E-16 8.59E-18 IE·16 3.13E-O:6.25E·IS 1.39E-16 6E-13 1.0~E~OO
29-Mar-04 <1.ooE-16 IE·16 d.t1E--<l1 d.OOE-16 NA lE-16 <3.33E{)1 <:1.00E-16 NA lE-16 d.llE-Q2 1.5~E·14 3_37E·16 2E-15 2.57E~OD
27-JUrl--<l4 <:.ooE-16 IE'16 <:1.11E-ol <1.0:lE·16 NA lE-16 <3.3JE·Ol <1.00E-16 NlA lE-16 <:1.IIE--D2 3.0~E-15 2.72£-16 2E-15 5.07E-OI
27-Sep-Q4 <l.ooE-16 lE-16 d.llE-01 <1.03E-16 NA IE-16 <3.33E-ol <1.ooE-16 NlA lE-16 ..1.I1E·~1.05E·14 3.85E·16 21:-15 1.75E.OJ
27-Doc·04
I
<1.00E·16 lE·16 ,,'l~E·OI ",1.0)E-15 NA IE-16 <3.3JE-<l1 <1.ooE·16 NlA IE-16 d.II£-{)1.59E·14 2.63E-16 2E-15 2.6fE·I))
28·MM-OS <1.ooE-16 lE·16 <:1.11E-01 <1.00E-15 NA IE-16 -e3.33E·{)1 <1.00E-16 NlA lE-16 <l.11E--o 7,42E15 1.-101;:-16 2E-15 1.24E-00
29·Jufl-<l5 <1.00E-16 IE·16 <1.11E-01 I.30E-15 l.l1E·17 IE-15 4.32E-ol 1.20:·16 1.67E·17 lE-16 1.34E-{)2 7.9~E-15 I.64E·16 2E-15 1.32E-OJ
z,:;·Sep-05 <1.00E-16 IE-16 <:l.IIE·O!2.55E-15 264E·17 IE-15 8.53E--<l1 2.42E-16 4.58E·17 lE-16 2.63E·02 1.2.<'E·14 5.37E·16 2E·IS 2.04E.00
3-Jar'l--06 2.13E·16 11:·16 2.J7E.Ql 1.04E-15 153E·11 IE-16 3.~5E-{)1 <1.00E-15 NiA lE-16 <1.11E·02 3.7;1E·14 5.93E-14 2E-15 6.22E..00
3·l.pl-Q6 \1.62E-16 IE·1S 1.80::':-01 '.8SE-16 50'-F.·17 IE-16 620E·Ol <1.00[-16 N'A lE·16 <1.IIEO B.JGE·l~4.2IE-16 2E-IS 1.39E.00
3"JuI-06 1.86E·16 IE'16 -_.2.06E--ol <:1.00E·16 NJA IE-l~~<-I.OOf-16 NlA IE-16 <1.1IE--<l2 9.nE·1S ~.?4E·16 2£-15 1.63E..00
02-0el-06 <1.00E-16 IE·I6 <1.11E-I <1.00E-16 NJA IE-i6 <3.33E·I <1_00E·16 NiA IE'Hi <:1.lIE-02 1.30E"14 5.0SE·16 2E-15 2.17E~OO
Ol-Jd,I-{l7 28ilE.00 IE'IS 3.20E·OI 1.47E-16 3.54E-16 lE-16 4.69E-<)1 <1.00E-16 NlA IE-IS ..1.l1E-02 1.11£~J.:4.58E-16 2E-15 1.9~E~OO
2·~,pr-01 ~.23-E16 lE-16 2ASE·oI 1.63E-16 "'1(0·16 $.45E-Ol ,,-1.ooE-16 N'IE-15 <l.J1E·1.65E·H 3.75E-17 lE·16 2.75E-I-00
2·.lui·07 3.35E-16 1E'16 3.72E·01 1.34E·16 4.33E-17 IE-16 USE-01 t.36E-16 7.07E·17 IE·15 ISIE-<l2 1.78£-14 ~.33E-17 2£,15 2.97E.00
30·Sep·07 1.15E-15 lE·16 1.71E·Of <:1.00E·16 NA IE·IS <3.33E·l <1.0010-16 NA IE·15 <:\,111;-02 7.58£-15 2.93E-16 2E-15 1.28E.00
31·De.:;-07 <1.O\IE-15 IE·16 3,66E{)1 193E·16 4.33E-17 IE·16 6.42E-ol <1.00E·16 NA IE·15 d.llE-02 I.3IE-14 3.40::-16 2E-15 2.16E.00
31-Mar-W 110-16 t26E-ol 2.63E·17 IE'16 376E·01 2.6-3E-17 lE-16 <:1.111;.·2 3.8IE-16 21'-15 t.07E.00
3(1·jun·('.(i 1.mf.-I~lE·16 7.88E-ol 1.03E-15 lE·16 1,28E~OO I_OS£::-16 IE-16 253E,{):!4.7I3E-15 L09E~oo
30·Sep·oa 7.69E-16 IE·16 6.54£-01 249E·16 2.22E-18 lE'lS 960E-Ol 1.90E·16 4.30E-17 IE·15 2.1IE·02 7.64E-15 4.16E-16 21:·15 I09E+OO
31·0cc·08 1.25E·15 lE·16 1.J5E<l1 4.76E-.16 5.54E-18 lE-16 1.59E~0l)3.34E·16 2.4:lE-17 IE-16 3.7\E-02 1.16E-14 5,54E·16 2E-15 195E.00
3l-/Aar-09 2.14£"15 IE-16 2.36E-I-00 1.02E·15 1.76E-16 lE·I6 3.39E:.00 l.ooE·t5 5.49E·17 IE·I{>I,OOE·l1 4.44E-I5 I.84E-16 2E·15 7.4:lE{)1
3O·jvn·09 5.97E·17 IE-IE 6.5~·O2 235£:-16 3.27£:.17 1E·16 7B~E·01 2.18E16 1(·16 242E-Q2 5.13E·15 1.44E·lo 2E·15 8.S5E--Ql
Tab 2
BHV-2 Radionuclide Concentrations (uCi/ml)
1.00E-11
1.00E-12
v ~..\1t 1\..1 U V \n I ......~,
......J\~.~~~~i\1\ft...
V7\J~1\lM....~....ff ••.......5 Nf\~*It.~
~./\
'\.
I
~.~l\~
1\r.:.1
..te
~III
•
I I ~1 \,~
4 r"\~
~u f~rf"t'*9~.•.
.....
~
T
1\
• I
1t T T ,
~A
~..J\1\ 1\\•
1.00E-16
1.00E-13
G)"1.00E-14
iiiCJ(J)
C)o:::!.1.00E-15
1.00E-17
)£&
1.00E-18 I I I Iii I I I i I I I I I I I I I I I I I I I I I i I I I I I I I I I I I i I I I I I I I I I I I I I l I I I I I I I I I I I I I I I I I I I I I ,
~~~~~~~~~~~~~~b ~~~B ~~~~~b ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~n~~~~~~~~~~~~~~~W~~~~~~~~~~v ~~~~~~~~~~~~~~
l-+-serieS1 -+-Series2 -'-Series3 -+-Series41
Effluent Concentration Umit :::9E-14 uCi/m!
ALARA Goal =2.25E-14 uCilml
Pre 994 =5E-l
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
BHV-2 Uranium Natural Concentrations (uCi/ml)
1.00E-11
I,
ii,
I
i
i
,
1 1'1'l\I~J 1\1\~...Ii
J.r'......~...\I I •.....1t .......~d~·\+\4o f\rw\..~fWV L.•
...
,
I
i
,,,,!I I ,,,",,,,
1.00E-12
1.00E-16
1.00E-13
1.00E-17
1.00E-18
~~~~~~~~~~~~~~~~~~9 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&~&~~~~~~~~~~~~~~~~~~~&~~~~~~~~~~~~n~~~~~~~~~~~~~~~~~~~~~~~~~v ~~~~~~~~~~~~~~
~1.00E-14
C5()
(J)
Olo
:::'1.00E-15
Effluent Concentration Limit =2E-14 uCi/ml
ALARA Goal =5E-13 uCi/ml
Pre 1994 MPC Limit =8E-14uCi/ml
Pre 1994 ALARA Goal =2E-14 uCi/ml
BHV-2 Thorium-230 Concentrations (uCi/ml)
'I iI
III
I
I
III
\I,II
I
I
I...II
••~I
~..t \I v...~~r.I ~I...1t I
VV'.~/\W ¥\..1 V\J\.A J\~:
II
II
I,
II
1.00E-12
1.00E-11
1.00E-13
1.00E-16
1.00E-17
1.00E-18
~'"~f'v ~":J ~~<-:J ~V:J ~~'O ~O)l?>~l?>'"l?>f'v l?>":J ~l?><-:J l?>V:J ~l?>'O l?>0)~~~'"~f'v ~":J ~~<-:J ~V:J ~~'O~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Q;'1.00E-14
m(,)en
Clo
d.1.00E-15
1.00E-11
Effluent Concentration Limit =9E-13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
BHV-2 Radium-226 Concentrations (uCilml)
1.00E-12
1.00E-13
Gi'1.00E-14
10uen
g,o
:::!-1.00E-15
1.00E-16
1.00E-17
\
•
•11 II .....•...A
\4f I I "•A n "1\
~N \II l,.,IV~,A \l\J \1 .\~lAo.1\..J\-A..
~,"\,
¥•
1.00E-18
co....cof),co";}~~colO ~co'O coO:>9;><::>9;>....9;>f),9;>";}~~9;>10 ~9;>'0 9;>0:><::><::><::>....<::>f),<::>";}~cl:><::>10 <S-<::>'0
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1.00E-11
Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA Goal =1E-12 uCi/ml
BHV-2 Lead-210 Concentrations (uCi/ml)
1.00E-12
1.00E-13
cp 1.00E-14
iii()en
eno
d.1.00E-15
1.00E-16
1.00E-17
.....,..•••.~1\1\•1I1\4/f .c\1\1\•
V \1 ..,.I\/UV'r WV~,•~~I ~.!I
•...
.1
1
1.00E-18
~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
IE-16 <3..33E-l d.OE·16 NA 1E-16 .<1.lIE-02 1.63E·1<4 4.3IE·16 2£::'15 2.72EoOO
IE-16 <3..33E-l <1.OE·16 NA lE-16 <1.11E-02 1.36E·\4 5.94E-16 2E·15 2.27EoOO
IE-15 N'<1.0E·16 IIA IE-16 dJI£{)2 82~E-15 3.04E{)6 2E-15 1.31Eooo
1E:-16 NA <:1.0E·16 NA 1E·16 <I.lIE{l2 1.18E-1<4 3.14E-06 2E-15 I.97E+00
IE·lf;NA <:I.OE-16 IIA IE-16 <l.IIE·02 6.4'3£·15 3.62E-16 2£-15 1.08E-+00
lE-15 NA <I.OE-:6 NA IE·16 <1.11E.o2 4.821:;-15 4.5IE·16 2E-15 8_OJE..(l1
IE+S <333E'1 d.OE-16 NA IE·16 d.11E·2 8.30E-15 4.S1E·16 2E-15 1.38E.00
lE'16 5.31E-ol U5E-16 2.35E·17 IE·15 1.39E-02 2.04E·14 5.54E·16 2E-15 3.41EoOO
lE·IS 4.60E-01 1.07E·16 1.83E·17 lE-lS 1.18E-5-2 4.811:'15 1.6SE-16 2£·15 8.02E-01
lE·16 l.55E-Ol S.IIE·!?6.60E-13 lE·15 S.68E-03 4.58E·15 1.;191:-16 2E·15 763E_Ol
NA
NA
NA
NA
NA
NA
NA
S.54E-17
326E·17
B.54E-18
THOR!UM-230 RADIUM·226 LE4D ·210
OU~lING LLD .,.Gnoss COUNTlNG LLD ~GROSS COUNTIN3 LCD %
ERROR (IE·161 MPC CONC!-CVcc ERroR (lE-16)MPC CONe.:C"cc ERROR (IE·16)MPC
2.()JE-16 1£-16 1.23E-01 5.92E-16 1.35E-16 lE-16 2.96£'02 1.67E-l~1.21E-15 2£-15 2.09£-01
3.02E-16 lE-16 2.68£·01 3.62£-16 1.72E-16 1E-16 1.8IE·02 I.33E-14 2.28=-15 2£-15 1.66£-01
6.49E-15 3E-15 3.67E·OI 7.27E-16 3.90E-16 4E-15 3.~E·02 1.52E·14 3.63£-15 2E-14 1.90E-Ol
2.39E-15 8E-17 2.58E·Ol 4.78E-16 1,69£-16 3E-16 2.3SE-oZ 1.nBli-I~1.79E-15 2E-15 2.-48E·Ol
1.35E-15 lE-16 1,20E-ol 8.73Eo16 2.7IE-16 lE-16 4.37E.(}2 2.3SE-14 5.43E-15 2E-15 2.94E-Ql
1.03E-15 5E-11 850E.(}2 1.9B£·16 5.66E-17 5E-17 9.90E·03 2.85E-14 2.50E-15 2E-15 3.56E-Ol
3.96E-17 SE-17 3,40E{l2 1.57£-16 1.63£-17 5E-17 7.85E{l3 2.~8E·14 1.1SE-15 8£-16 ';.lOE{)l
5.05E-17 8E-17 687E·02 2,24E_16 €.68E-17 1E-16 1.121:·02 1.7$C·14 9.94E-16 BE-Iv 2.24£--01
6.49E-17 4E-17 1.12E·Ol 4.37E-16 9.81E-17 5E-17 2,19E·02 1.78E-14 1.09E-I5 4E-;6 2.23£-01
l.l1E-16 IE-16 4,OOE-02 6.64£-0 4.52E-18 6E-17 332E·03 9.14E-15 1.46E-15 2E-15 1.14E--01
5.16E-17 5E-17 5,83E{l2 4.S7t'-17 5.03E-17 8£-17 2.29E·03 3.55E-14 1.79E-15 2E-15 4.44£·01
3.35E-16 OE.OO 2,71E-Ol 1.1:8E-16 1.00E·16 lE-16 9,90E{l3 1.1;6E-14 1.20E-01 IE-IS 2.10E·Ol
a02E·17 lE-16 8,87E·03 o.oOE...()1.17E-16 lE-16 O.OOE..OO 1.17E-14 1.22£-15 9E-16 2211;_01
2.03E·16 9£-17 2.52E·Ol Vr.'E-16 1.14E-16 lE-16 1,44E{)2 3.19E-14 1.55E...00 IE-IS 3.99E--Ol
1.75E·16 3E-17 5.57£·02 6.75E·17 7.69E-17 8E·17 3,3€E·Q.J 7.56E-15 8.03E-16 8E-16 9ASE-oz
476E·H 3E-16 3.00E-l)1 <4.90E·17 I.OSE-16 9£-17 2ASE{lJ 1.31::-14 1.32E-;S IE-I5 1.64E-ol
4.63E-17 3E-16 7.26E{)2 3.7IE-16 4.64E-17 7E-17 1.86E-02 3.64:':-15 2.85F.:-16 2£-15 4,55£;-02
1.12E·15 7E·16 12DE·02 2.15E-17 2.31E-16 2E-16 1.0B£-o3 3.04E-I6 1.71E-15 2E-IS 3.80£·03
7.181:,17 5£-18 5.OOE·02 3.71E-16 &45E-17 4£-18 1.8:£-02 2.90E-I5 2.10E·16 9E-17 3.63E{)2
4.32E·17 2E·17 4.3!}E·02 7.09E-17 8.61E-18 4E-16 3.s~E{)3 2.53E-14 2.60E-15 3£-1:'3.16E-Ol
4,ooE·17 2£'18 5.8l!E-Q2 3.67E-16 1.00E-16 lE-18 1.84£.Q::'1.04E-14 2.ooE-16 3£_18 1.30E·Ol
200E·17 2E'17 O.OOE+-OO \.05E-16 5.00E-17 3E-17 5.25E.Q3 7.81E-IS I.COE-16 3E-17 9,76E-02
4,ooE·17 5E-18 4.3JE.Q2 '.74E-17 3,00£·17 4£-18 3.87E-03 3.80£-14 l.ooE-15 6E-18 475E.{)1
7,ooE'17 4E·18 2.21£-02 1.34E-15 4.ooE·17 4E-18 6]0E.Q3 1.10E-14 3.00£-16 2E-17 1.38E·OI
5.00E·17 6E-17 7.93E·{J2 1.38E-16 6ooE·17 2E-17 6,9OE{l3 1.04£-14 3.ooE-16 1E·16 1.3OE·01
8.00E·17 6E-18 1.04E-(}I 1.83E-16 7.00E-17 6E-17 9.ISE-03 1.17E-14 3.00E-16 3E-17 1,46E·OI
5.00E·17 2E'17 7.70E{l3 1.20£'16 300E·11 3E-17 G.0DE·03 3.55E-14 2.00£-16 5£-17 4,44E{)1
5.00E·17 2£-17 0I.97E-{)2 2.3JE·16 5.00£·17 2E·17 1.ISE·02 1.18£-14 2.ooE-16 4E-17 1.48E{)1
1.5DE·lll lE·17 2.9OE-01 1.8JE.16 400E-17 2E-17 9.000:-03 1.<:2E-14 2.00E-16 2E-17 1.78E·Ol
6.GOE·17 IE-17 2.25E-Dl 1.57E-16 3JXlE-17 IE-17 7.8-SE-03 2.25E-14 2.ooE-16 3E-17 2.8IE·OI
3.09E·n <4E-17 9.50E-02 1.5)£:-15 2.32E·17 2E-16 7.75E-03 2.80E-14 2.32£-16 5£-16 3.50E·OI
7.OCE·17 7E'18 7.50E-02 1.6-3E-15 3.00E·11 71:-18 8.15E.lJ3 6.05E-15 1.ooE-16 4£-17 7.56E-02
8.OCE·17 8E·18 3.20E.lJl 1.25E·15 l.OOE-16 8E-18 6.30E-02 6.£510,15 1.00E-16 <lE-17 8.31E-o.2:
6.ooE-17 3E·18 1.36E-ol 4.13E-IS 6.00E-17 7E-18 2.09E-<l2 1.59E-14 3.00E-16 2E-17 IS9E.Ql
7.00E-17 7E-18 1.08E-11 3.74E-IS 9.ooE·17 3£·17 1.87E-(I.2:1.98E-14 3.00£-16 5£-17 2.4f!E{l1
1.00E-16 IE·16 1.76E-<l1 3.97£-16 1.001:·16 lE-16 1.99E-02 I.69E-14 3.ooE-16 ZE-16 2.11E.{Il
3.ooe-17 lE.16 l.a3E-ol 4.75E-17 2.00E.·t7 lE·16 238E-D3 1.27E-15 2.o::n::-1{l 2E-15 1.59E-{)2
6.00E·17 lE·16 8.80E-02 1.93E-16 4.0GE-17 lE-16 9.65::'03 2.25E-14 3.ooE-16 2E-15 2.BIE.()1
1.60E-17 1E'16 2.33£-03 3.33E-17 1.80E-17 lE-IS 1.671::-03 3.49E-14 1.0JE-15 2E-15 4.36E{l1
9.00E-17 lE-16 1.29E{JI 2.&JE-16 7.OC·E·17 lE·16 1.40"{l2 1.5OE-14 1.0J£-15 2E-15 1.88e·01
5.00E-17 lE·16 2.94E-{\2 7.65E·17 6.OCE·17 lE-16 3.83E·{}3 1.58E-14 3.ooE-16 2£-15 1.9lJE{)I
2.00E-17 2E·11 1.27f:·02 2.54E·17 2.00E·17 2E·17 1.27E-03 1.45E-14 4.00£-16 IE-1/i 1.61F.{)1
4.0CE·17 2[;'17 2·27E-02 1.40E·17 2.40E-17 2E-\7 7.00£--04 3.41E-14 6.ooE-17 lE-16 4.26£{11
4.0DE-l1 2£'19 2.54E--02 3.01E·17 3.ooE-17 2E·19 1.54£-03 1.27E-14 2.ooE-t6 IE-18 1.59E{)1
200c:-17 4E-18 2.36E--02 2.80E-l:-4.2GE-17 2E'18 1.40:':--03 1.41£-14 2.ooE-16 lE·17 1.76E{l1
2.40E-17 'IE-HI 1.22E--02 1.78E·17 2.BOE-17 3E·18 8.9CE-04 1.71E-14 2.00E-15 2E·17 2.14E-ol
5.30E-l?4E·18 9.90E--03 631E·17 5.00E·17 3E·18 3.16E-03 3.41E-14 5.00E-Hi 2E·l?4.26E-ol
5.00::-11 'lE-18 2.37[-02 319E·17 3.2(lE-17 3E·18 1.60E-03 1.34E-14 2.ooE-16 2E·17 1.68E-ol
3.7CE·17 4E·18 O.O::ll;.oo O.OOE.OO 8.10E-17 .::iE-IS O.OOEoOO 1.80E-14 4.ooE-16 21;·17 2.25£--01
5.90E-17 <lE·18 o.ooEooo O.DOf...OO 1.9OE-16 3E-18 o.OOE...oo 1.49£-14 2.00F.-16 2£·11 1.86E--Ol
6.00E-17 4E·18 O.OOE...OO 1.84E·16 2.00E-16 3E·18 2.04£--02 2.19E·14 5.ooE-15 2E·16 3.65E...00
8.00;::-17 4E-IB 2AOE-Ql 969E·17 7.00E-11 -:'£·11 1.·,OE·02 1.37E-14 3.00E-16 2£·16 2.28E...00
2,23::-16 4~'1€9.87E·OI 3,04£·1&3.04£::-17 lE'16 3.38E·02 O.OOE...OO 2.14E-16 IE'16 o.ooE...OO
3.16E-17 4E'18 7,83E-01 1,ooE·16 1.26E-17 lE·16 1.IIE-02 OOOE.oo 529£-17 IE·15 o.oo~.oo
I.00E-16 'IE-IS 3.23E--01 9leE·li l.ooE-16 lE-16 l.oaE-02 7.42E-15 3.59E·16 IE-IS 1.24E.00
1.00:-16 4E-18 ~.OOE-01 3·5CE·16 3,25E-17 1E·16 3.89E--02 3.90£-15 1,90E·17 IE·16 5.S0S.()1
lE-16 3.22E·Ol 1.3~E·16 3.94E-17 lE·16 1.50E-02-2.33E-16 200E-15 2£-15 3.!t7!:-02
3.45E-17 21:·16 1.36E..oo 5.2~E·16 7.34E-17 2E-IS 5.81E..(12 677E-15 635E·16 IE·IS 1.13E.00
4.90E-17 IE-16 2.89E+00 4.8fE-16 5.50::-17 lE·16 5.40E-02 3.5OE-15 2.76E-16 IE·16 5.83E·Ol
1.90E-t7 lE-16 3.53E-ol I.OC£·16 NA lE-16 1.11E-02 6.85E-15 54-4E-16 1E·16 1.14E.00
3.07E-17 lE·16 9.27E-{l1 I.OCE-l(i NA IE-16 I.l1E-02 5.83E-15 30'E·16 1E·16 9.72E-ol
2.97E-17 lE-16 5.23E-ol I.OGE·I€NA lE-16 1.11E-02 1.19E-14 451E.IE IE·16 1.9.lEoOO
NA lE·15 3.33E·01 I.OCE-16 NA IE-16 l.l1E.o2 5.84E-15 3.56E·17 lE-16 9.73E.()2
NA lE·16 3.33E-{l1 t.CJCE-l€NA lE-16 1.11E-02 3.89E-15 287E·16 IE-16 6.48E.ol
2.29£".7 1£'1$3.6:lE~1 <1.0E-16 NA IE-16 O.OOE.CO 5,69E-1S 3.1;"E·16 lE·16 9.48E-01
NA 1:-16 3.57E-('1 5.00E-11 NA lE-16 5.56E-03 S,IIE-l:;,""IF-·16 8.52EOl
1.23£-17 lE-16 5.70E.o1 1.28E-16 7.68E-18 lE-16 1.42E-<l2 6,40E-15 3.04E·16 lE·16 1.07£...00
2,77E-17 lE-16 1.41E.(O 3.39E-16 3.21E-16 1E-16 3.77E-02 4,80E-15 3.21E·16 lE·16 8.00E-Ol
NA lE-iG <;3.33E-ol <1.0E·16 NIl IE-16 <1.11'::-0 4.26E-15 2.HE-16 lE-ll;7.11E-Ol
I.54E-17 lE-16 7.17E-Ol 1.38E-16 615E-18 lE-16 I.54E-02 6,88E·15 2.23E·16 lE·16 1.15EoOO
<1.0E-16 1E-16 <:3.33E-01 <1.0E-16 <1.0E-16 lE-16 <1.11£·C2 7,61E'15 3.OC,E·16 lE-16 1.27Eooo
<1.0E-16 lE-16 <3.33E--ol <1.0E-16 <1.0E-16 lE-16 <1.11£--02 6,95E·15 3.28E·16 lE-15 1.15E..00
1.371;-17 1£-16 ~.7QE-01 <I.QE-16 <1.0E-16 1:;-16 <1.11E-02 7.35f-15 3.o9E·16 lE-16 1.:'.JE+'oo
3.05E-11 lE-16 8.66E{)1 2.01E_16 2.~4E-:7 lE-16 2.33E--Q2 7.ooE-15 3.26E-16 1£·16 1.17E+OO
NA lE·16 <3_33E-01 <1.(/E·16 NA lE-16 <1.11 £-0 7.12E-1S 3.05E-15 lE-16 1.19£.00
1.87E-17 1E-16 <3.33E-<l1 1.1SE-16 IA2E-07 lE-16 1.29E'()2 5.07E-15 2.76E-16 1E-16 8,45E·Ol
NA IE-16 <3.33E-OI <1.0E-16 NA 1E-16 <1.I1E-02 5.31E-15 1.59E·16 lE-16 8.85E-ol
NA IE-Hi <333E.-Ql <1.GE·16 NA 1E-16 <1.I1E-02 9,45E-15 2.38E-l€IE-Iv 1.58~..OO
NA IE·16 <3.33E{)1 <\.OE·16 NA lE-16 d.llE-{)2 6.95E-15 3.72E-16 IE-16 1.16E...OC
NA 1E·16 <3.33E--{)1 d.VE·16 NA lE-16 <1.1IE.(I2 6.55E-15 1.27E-16 lE-16 1.09£...00
NA IE-16 <3.331:;'01 <1.eE·16 NA 1£-16 <1.IIE·02 6.15E-15 1.5OE-l€IE-16 1.03E..oo
NA lE-\6 <3.33E-ol ,,1.CE-16 NA 1£'16 <I.11E·02 2.20£-15 1.72E·lv IE-16 3.67E.Ol
NA lE·16 .,-3.33E.{)1 <1.()E-16 NA 1E-16 <:1.11E-<l2 9.95E-15 1.74E-16 IE-16 ~,~iii&iii
138E·17 lE-15 4.nE{l1 <1.CE-l6 NA IE-16 <1.11E{)2 &25E-15 1.nE-16 IE-16 1,42e...OC
NA lE'16 <3.33E·OI <1.O!:-16 NA IE-16 <1.11E-{)2 3.69E-15 8.97E-17 IE-16 6.ISE-01
'JA IE-16 ...3.33E-{\1 -<1.0E-16 NA lE-16 <1.11E{l2 6.91E-15 1.41E·16 lE-16 1.15E..OC
IIA lE-16 <3.33E-01 <1.0E-16 NA lE-16 <:1.11E{)2 6.16E-15 1.3CE-16 1;::-16 1.11"'1E+OC
NA lE-16 <3,33E-01 <1.0£-16 NA lE-16 <f.l1E{)2 5.27E-15 1.29E-16 lE-16 8.78E-01
NA 1E-16 <3,33E·0I <l.IJE-16 NA lE-16 <1.11E{)2 7.23E-15 1.85::-16 lE-16 I.:;QEi-DC
NA lE-16 <3,3:lE·OI <1.(E·16 NA lE-16 <1.1iE{l2 7.80E-15 1.76~-16 IE-16 I.30E...OC
'IA lE-16 <3,33E{)1 <I.QE-16 NA lE-16 <1.1IE·02 2.04E-14 3.25E:-16 2E·15 3.«>E.0<
NA lE-16 <3,33E.(}1 <1.0E-16 NA lE-16 <1.I1E-02 3.09E·15 2.08E-I6 2E-15 :5.15E-01
NA lE-16 <33JE{)1 <1.0E-16 NA 1E-16 d.l1E{l2 1.73E-14 3.53E-16 2E-15 2.89Eooo
NA lE·16 -<3,33E·OI "1.DE·16 NA 1E-16 <1.11E{l2 I,JOE-14 1.90E-16 2E-15 2.16E...00
rIA IE-15 <3,33E·01 d.DE-1S NA lE-16 «1.11E·0'.888E-1$1.511;:-16 2E·15 1.48E+00
rIA lE-16 <3,33E{l1 <1.0E·15 NA lE-16 <1.11E·02 8,85E'15 1.72£-16 2E-15 1.47E...OC
2.36E-17 lE-16 6.65=-01 1.44E-16 3.19E-17 lE-16 1.60:-02 3.81E·14 7.6IE-16 2E-\5 6.36E.0<
NA IE'16 ..:3.33E·01 4.08::-16 5.69£-17 1[;-16 4.54E-02 6.58E·14 7.871:·16 2E-15 1.10E+01
NA 1E-16 <3.33E·Ol <1.0=-16 NA lE-16 d 11£.(12 1,08E·14 5,9610,16 210-15 1.8:>E...00
NA tE-16 <3.3JE{)1 <1.0E-16 NA lE-15 <1.11E-02 l.aSE-16 2E-15 1.84E...00
NA IE-16 <3.33E-ol <1.0e-16 NA lE-15 <1.lIE-02 1.68=-14 7.G1E-16 2E·15 2.8CE~O::l
IIA Ho-16 <3.33E·01 <1.0;::,16 NA lE-15 <I.lIE>Q2 1.38E-t4 U8E-t6 2£-15 2.3CE.m
2.15E-16
«1.0E·16
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1.41E-I6
2.60£-16
d.OE-16
<1.0E-\6
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d.«(lE-16
1.43E-16
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GROSS
CONC.'Ci'cc
.()2 3,69E-16
-03 803£-16
-{)2 1.10E·15
.()2 7.73E·16
.()2 3.60E·IG
.()2 2SSE·lll
{l3 1.02E-I(;
-03 2.05E-16
-03 3.3EE·16
-02 121JE·16
-03 1.75E·16
-02 8.12E-16
~3 2.66E·17
-03 7.55E·16
00 1.67E·16
04 9.ooE·16
03 2.18E-16
(1.2.16E·16
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--03 1.32,,_16
-02 1.74[-16
-03 O.OOE...OO
-02 1.30E-16
03 6.53£:-17
-03 2.38E-16
-03 3.11E·16
02 2.31E-17
03 1.49E-16
-02 8.69E-16
03 6.76E-16
-02 2.8se-16
02 2.2lJE-16
-03 9.60E-16
-02 4.08E-15
-02 3.25E-16
-02 5.27;:-16
-03 5.49':;-16
-02 2.64E-16
-03 7.00E-18
03 3.S6E-16
03 B.82E-17
04 3.82E-17
-03 5.82E-17
-03 7.6JE-17
-03 707E·17
03 3.65E-17
('3 2.97E-17
00 7.IIE·17
03 O.ooE+oo
00 O.ooE..OO
01 O.OOE..oo
01 7.WE-17
..(l1 2%E·16
-<l1 2.35E-16
-<l1 9.70E-17
01 l.aJE-16
-{)1 9_67E_17
00 4.09E-16
00 8.£0£-16
-01 I.1SE-16
-{)I 2.78E_16
01 1.57E-16
01 1.00E-16
-0,I.00E-16
00 1.0910'16
01 1.07E·16
01 \.71E-16
-(}1 4.24E-16
E·l d.OE-IS
,)I
01
01
~I
~I
~I
.o1
00
01.o,
.(},
,)l
-01
.(},
.o1
.(},
-.01
·01.o,
.o,
.o,
.o1
.(}I
~I.o,
.o,
.o1
·01
~I
-01
·01
1.30E·It;l.ooE-16 1.44E-Q1
1241';·16 I.C<lE-16 1.36E-{l1
I.~E-16 1.('OE-16 1,56E-(}1
1.0·1E-16 1.(OE-16 115E{l1
dE-15 LCOE'16 <1.11E{lI!
1.9IE·16 I.OOE·16 212EOI
<1.00E-16 100£-16 I.IIE·OI
1.29£-16 \.ooE-16 143E{l1
2.37E·16 ~.OOE-16 2.63E{)1
$.71£-16 1.00E·1('6.3':E.ol
3.96E-16 \.OOE-16 4.411:·01
1.2~E-17 \.ooE-16 1.36E·02
02-ocH16
01-J;m-07
2-Apr-()7
2-Ju1-07
3-J-Scp-G7
31·Doc-Q7
3:)·Mu-08
3:I-JlJ~-08
30-Sep-(l8
31·Dcc·OS
31-Mar·09
3'J-Jun-09
URQ,NIUM N4.T.
PERIOD GROSS LLO ~.
:NDING CONC·IlCi/cc llE-16)tAPC
28·Sep-81 1.39E·15 lE-15 2.7SE
14·Dec·81 4.62E-16 lE-15 9.24E
29·Mar-B2 7.07E-1S 9E-1S IA1E
~O...M1-82 8.84E-16 1E-17 1.77E
27-Sep-82 1.23E·15 lE-16 2A6E
3-Jan·/33 2.6~E-IS 5E-17 5.28E
4-Apr-83 2.HE·16 5E-17 4.28£
3O-Jun-S3 2.8SE-16 5E-17 5.7OE
3-0CI-83 2.70E·16 5E-17 5AOE
3-Jan-84 2.78E·15 lE-16 5.5se
2·Apr-84 4.2IIE·16 5[·17 8.""
2-JuI-84 2.78E·15 5E·17 5""
l-ocl-84 2.69E·16 5E·17 5.asE.-
2-Jan-ll5 2.15E-16 Sf·16 4.3OE
I-Apr-55 O.OOE..OO 5E'17 O.OOE...
l-Jul-8S 3.70E·17 51;·17 7AOE_
3J-Sep-35 9.32E·17 5f-16 1.BBe--
2-Jan·86 .D1V:0!lE-15 /lOlVf
l-Apr-B6 1.3;E·15 2E'UI 2.61E
3[l-Jun-86 223F.:-16 If.·17 ,U1E
27·OC1·as 641E-16 lE·18 1.28:;=
15·Dec-86 3,56E'16 31'-18 7.12<:
16·MaH17 531E·16 310-11;1 I.OGE
11·MIly-87 4.06E·16 4E-18 6.12E-
9·Sep·81 2.74E-16 5E·I8-546E
2·t\ov-87 3.73E·16 IE·17 746E
16·Fet,l·88 2.76E·15 ~E·16 5.56E-
18-M<ly-aa 4.6~E·16 3E-18 9.26E-
15-Aug·58 8.06E·16 3E-18 1.61E
14-t./o/-88 4.34E·16 3E·18 8.68E-
13-feb-59 5.8CE·16 4E·17 U6E
15-May-gQ 5.06E-16 7E-18 1.01E
14·Aug-89 4.7IE-16 2E·16 9.42E
lH./o·,-89 1.I4E-15 2E-17 2.27E
12-Feb-SO 1.OSE-15 4E-18 2.18E
l<\·It1ay·90 9.32E-16 lE·16 '.86£
13-Aug-90 1.66E-16 11;-16 3.32E
12-Nov-90 6_0SE·16 lE-16 1.21£
l1-Feb·91 8.72E·I7 lE-16 Ll4E
13 May-91 1.1GE-16 lE-1G 2:12£·
12·Aug-91 9.02E-17 lE·16 l.roE-
lH~ov-91 4.!31E-17 IE-16 9.62£·
10·Feb-92 1.54E-16 lE-\6 3.C.aF
Il-MEly-n 2.30£0-16 1(·16 {.76E
1O·Aug·92 1.01E-16 2E-18 2.02£
9·NJv·92 5.20(-17 3E-21 1.C4£-
9·Fel>·93 2.39E-16 1E·22 4.78E-
10-May-SJ 0.001::.00 3£-18 O.ooE...
tCo·Aug-93 1.90::'-16 2E-18 :UlOE-
8·Nov·S3 O.OOE.OO 2E·18 O,OOE...
7·Feb·9~2.23::;·16 2E-18 3.72E-
g·May·94 2.16':;-16 2::--17 3.60E-
9·Auo·9<4 9.292-17 Ie-II>tSS£:
7·Nov·9<4 9.21£-17 IE-16 I.54E
7·Feb·9S 1.18E-16 lE·16 1.97E
9·MJ.y·95 9AOE-17 IE-16 1.57E·
9·Aug·9S 8.90;:-11 IE·16 1,48E
l1-No...-95 2.83£,15 lE-16 4.72E~
5·Feb·96 1.75E-\5 lE-16 292Et
6-Mily·96 UOE-16 IE-16 2.33E
5·AuO·96 1"'3£·16 lE-16 2.38E
6·N(lv·96 IA5E·t6 lE-16 2.42E-
6·Feb·97 I.00E-16 lE-16 1.67E-
5~~i1Y'97 I.OOE-16 IE'16 1.67E
11-AuO·97 «tOE-16 lE-16 O.OOE.
5·Jan·98 2.55E-16 lE-16 4.25E·
28-Apr·g5 I.:<'OE-16 lE-16 2.00E·
3hl.ll·95 1.47E-16 lE-16 1.63E
28·Ser>-93 ",1.0E-16 IE·16 <1.1:
28·0ec·98 2.54E-16 lE-16 Z8JE
29·MIH-99 1.07E-16 lE-16 1.19E-
3·JIlI-99-2A6t-15 lE-16 2.74E-
27·Sep·gll 2,6IE·16 1E-16 J.12E
28·Dec·99 5.~OE·16 1E-16 5.78E
2H..-tu-OO d.0£-16 lE-16 <l.llE
25·Jun-OD \.10E-16 lE-16 1.22E
26·Sop-OO <1.00E·16 1£,16 O.DOC.
26·Dec-OO 1.26£;-16 lE-16 1.40E·
26·Mar.(l1 <1.ODE-16 lE-16 <\.11E
2'J~<1'01 <1.00E-16 IE-1G <1.I1E
24·S~-o1 <1.00E·16 lE·16 <1.HE
31·Dec-o·,<1.00~-16 1E-16 <1.IIE
l-Apr-Q2 <1,002-16 lE-16 <1.11E
l-JiJ-Q2 1.2SE'-16 lE-16 1.39E
W·Scp'02 ..:1.ODE-16 lE-1G <1.11E
W-Dec·02 <l.OOE-16 lE-16 <U1E
31·Mar{)3 <I.OOE-16 lE-16 <l.11E
W·Jun{)3 <1.00E-16 lE-15 <1.11E
29·Sep-03 <1.ODE·16 1.ODE-16 <1.11E
2g-Dec{)3 <1.00E·16 1.(IOE-16 <1.llE
29·Mar{)4 <1.00E-16 I.00E-16 <U1E
27-.).Jn{l4 <I.OOE-16 1.00E-16 «I.11E
27-Sep-<l4 <:I.ODE-IS 1.00E·16 <1.11E
27·0ec.()4 <1.00E·16 1.00E_16 <"I.IIE
:<6-Mar{l5 <I.ODE-16 1.ooE-16 d.IIE
29·>.m..(J5 <I.ODE·16 l.ooE-16 <I.lIE
Z\5-S.:p-Q5 <l.ODE-16 l.QOE-16 d.lIE
3·Jlm.(l6 I.29E-16 looE-16 1.4~4
3·Apr-(6 1.C>2E-16 l.{(:E-16 1.I<4E
J-Ju!-05 <HOE-16 I.OGE-16 <I.liE
Tab 3
·J
II II 11111
II II IIIII
II II III I -QIIIIIII,
II II III I ~~II II III I ~II II III I IIIII
II II III I II1II
II II III I 11111
II II III I III ,I!,,II III I 1111 I (5'~I '"I 11111
I I III I IIIII ~I I III I 11111
I ,III I "I II
II I III I 1111
I I III I 1111
I I III I tIll C)
I I III I 1111 6'~I I III I 1111 ~I I 11111 III1
I I Ifill IIII
I I I 1/11 III
11111 1111 III
IIII I 1III III ~11111 IIII III 6'~11111 1111 III ~III ,1III "'III I 1III III
III I 1111 "'Jilt I I
III I IIII III 11111 I
III I II1I III I I ,(0IIIIIIIIIII11111I6'~....
III I 11'1 1/111 I ~C\J:::::-III I 1111 IItll I .6IIIIIIII11111Ia....E III I IIII 11111 I
III I 1111 11111 I 1(3 III I 1111 11111 I QIIII1111I1IIII!5'~:::J III I 1111 /1111 I ~-III I IIII 11111 I (0IIIIIII11IIIIIC\JenIIIIIIII11111IellCIIII111111111I
0 III I 11/1 1111 r I 6':a:
~III I 1111 11111 I o>~+I~I I 1 1111 II I ,
CO 11111 II I II I ,~Jo-tllil II II I ,-Iitl J II II I IC11111IIII
"0(I)11111 II II ,c9.C')
U 11111 II II I OJh C\JC11111IIIII1:.0 II I II II II I ~f-Itlll II II I()11111 II II ,J.(I)11111 II II I
JIll II II ,
<O>h I:2 III II II ,
III II II ,Cti'0 III II II I ~
:::J /II II II I ZIIIIIII,:)C III II II ,
0 III II II I ~
+:c III II II I (PhIIIIIII,
CO '"II II ,~a:'"II II II ,
I"II II II I
M 11111 II II II
I Jill I II II II $\>11111 II I II
11111 III I II o>~J:11111 III I ~m Ill/I '"II
Hill III II I
11111 '"1111
Illli "I II I ,I!,III II '"II I
III II '"II I i9~IIII t III II I ~11111 III II I
1111 t '"II I
11111 "'II I
11111 III II I
Irlll III II I ClIIIIIIIIIo>~II II I1I1 II ~II II 1111 II
II II IIII II
II II III1 II
II II 1111 II
II II till II ~II II 1111 II o>~II II IIII II ~II II IIII II
II II 1111 II
II II 1111 II
,(
C\J C')-:t LO (0 l"-to o>~........,...,...............~W I I I I I IWWWWWW0000000C!~~C!~~C!
J
....,...,...................
(eillos 601)
:J
Effluent Concentration Limit =9E-14 uCi/mI
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit =5E-12uCi/ml
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
-----.J
BHV-3 Uranium Nat.Concentrations (uCi/ml)
-----..J
G)
"iiiCo)tn
0)o..J-
1.00E-11
1.00E-12
1.00E-13
1.00E-14
1.00E-15
1.00E-16
1.00E-17
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~-----------------------------------------------------------------I
=============================================================================================-======
------------------------------------------ -----------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------ -------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
===.============================================================================================,__-I
========================================== ======== =======-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1.00E-18
"~co
)'5
~cof)"
)'5
~~co
)'5
b<~~
)V
b~<o
)V
<0~'8
)'5
~~co
)'5
~coco
,)'5
~coq,
,)'5
~q,~
)'5 "~q,
)'5
~q,f)"
)V
~q,"J
)V
b<~~)'5
~~qj
)'5
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------1.00E-11
'--
Effluent Concentration Limit =2E-14 uCi/ml
ALARA Goal =5E-13 uCi/ml
Pre 1994 MPC Limit =8E-14uCi/mI
Pre 1994 ALARA Goal =2E-14 uCi/mI
BHV-3 Thorium-230 Concentrations (uCi/ml)
----'
1.00E-12
1.00E-13
Ii)1.00E-14
"iiiuth
01o
::::!.1.00E-15
1.00E-16
1.00E-17
1.00E-18
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------------------------------------------::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::-I----I
___________________________________________J_~_
~~~~~~~b b ~~~~~~9 9 ~~,,~~~~~~b b~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#~#~#~#~#~#~#~#~#~#~#~#~#~#~
'---
1.00E-11
1.00E-12
Effluent Concentration Limit =9E-13 uCi/mI
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
BHV-3 Radium-226 Concentrations (uCi/ml)
----"
1.00E-13
------------------------------------------------------------------------------------------c
~1.00E-14 -~:::::=:=::::::::::::=:::=:::==::===:::======::::============:=:::====::==========:=:==::=:4
uen
l:no
:::!.1.00E-15
1.00E-16
1.00E-17
1.00E-18
,~~~~~~~~~~~~~~~~~~,,~~~~~~b b~co 50 ~co !O ~co ~~q)50 ~q;~~co 50 ~co ~~q)95 ~q;~~CtJ ~~~~~~~~~~~qj ~~qj~#~#~#~#~#~#~#~#~#~#~#~#~#~#~
I..--
-----..l -----..l
Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCilml
Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA Goal =1E-12 uCilml
BHV-3 Lead-210 Concentrations (uCi/ml)
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------_._------------------------------------------------------------------------------------------------------------
1.00E-11
--------------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------------
:::::::::::------------------1---
:::~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~-=--J
-----------------------------------..---------------------------------------------------------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------!I
i
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
·11111~111~~~~~~~"111~~1111~1~~1~~~1"~1~~~~~~~~1~~~11~1~1'111~~~~~~~'~~~1:~:~~~~~~~~1~~-
1.00E-13
1.00E-12
1.00E-16
1.00E-17
CD 1.00E-14
iiiu(f)
C)o
d.1.00E-15
1.00E-18
"-~r:o,:>v
~r:00.t­
,:>V
~r:ot>:>
,:>v
b<~C(),:>v
~~'O,:>V
ro~'O,:>V
~~r:o,:>v
'0~C(),:>v
~r:oOj
,:>v
!:)~"8,:>V "~Oj,:>v
~Oj0.t­
,:>V
~Ojt>:>
,:>V
b<~OJ,:>v
~Oj<-;'
,:>v
LUCP.1IUN 6iV-4
URANILM NAT.lHQAIUM·230 RADIUM·226 lEAD·;?IO
PERIOD GROSS LCD %GROSS COUNTING lCD %GROSS COUNTING LLo ~"GROSS COUNTING Llo "ENDII>JG CONC.~"cc (IE-16)MPC CONC.l!Cilcc EnROn (IE-15)MPG CONC.IlCilcc ERROR IE-16)"PC CONC·lJCilCC ERROR (1::-16.1 MPC
2S-Sep'81 5.l0E-15 1E-t6 1.04E-{H 321E-15 5.70E-16 lE·16 107E~O)2.74E-15 6.ISE-16 IE-IS 1.37F-ol -1."84[-14 272E-IS 2E-15 2.30£-01
14·0f1:·81 4.53E-15 IE-16 9.06E{):2 2.93E-15 5.C9E-I6 1E·16 9.77E.Qj 2.29E-15 3.34E-16 IE-16 1.15E-01 2.54E-I4 2.13E·15 2E·15 3.18E·01
29·M'u-E2 1.06E·15 9E-16 2.12E-02 1.78E-15 1.12E-15 3E-15 5.93E·01 1.07E-15 4.7IE-16 4E-15 5.35E·02 2.31E-I4 4.16E-15 2£,14 2.89E-{ll
30-•.lm,82 6.03£·15 6E-17 121€{)t lAlE-14 t.19E-15 6E-17 4.73E..00 2.62E-I5 3.0SE-16 3£·16 1.3IE·OI 2.2SE-14 3.00E-15 2E·15 2.8IE-OI
27·Sep-82 1.26E-14 lE-16 2.52E.Ql 1.57E·14 7.17E-15 lE·16 5.23E..00 S35E·I5 5,47E-16 IE-16 2.68E·01 2.69E-14 3.69E-15 2E-15 3.35E-01
3·Jan·83 4.33E·15 5E-17 8.66E-Q2 7.58E-16 1.16E-16 5E·11 2,53E-01 6.04E·I('9,15£-17 6E·17 3.02E-02 2.57E-14 1.90E-15 2E-15 3.2IE·0l
4·Apr·53 1.25E-15 5E-17 2.SOE.Q2 6.52E-16 5.5SE·17 5E-17 2,17E{)1 6.76E·16 1.36E-16 IE·16 3.38E·02 2.()JE-14 1.09E·15 9E-16 2.5OE{)1
30·_.l.m·83 3.73E-16 lE-16 7_~6E-Q3 7.17E-16 2.14E·16 2E-16 2.39E-Q1 4.13E·16 1.88E-16 2E·16 Z07E{)2 I.20E-14 2.00E·15 2E-15 1.50E-OI
3-OCt·83 2.54E·\6 4E-17 5.08E-03 9.43£'-16 1.13F.-16 2E·17 314E-01 2.65E·16 5.73E-17 :lE·17 1.33E-02 2.50E·1~1.HE·15 4E-16 ~.13E-ol
3·Jan·84 2.76E-15 IE·16 5.52E-Q2 1.51E-16 3.92£·17 4E·17 503E·02 1.05E·16 6.79E-17 9E·17 525E-03 1.59E-16 8.ooE·16 6E-16 1.99E·03
2·Apr·84 4.27£-16 sE-17 8.54E{}3 1.60E-15 9_05E·17 IE·16 53JE.Q2 6,28E·16 9.83E·17 8E·17 3.14E·02 3.67E-14 1.79E·05 lE-15 4.59E-OI
2-JvH!4 2.57E-15 Sf-17 5.14E·02 2.33E-15 I.03E-16 8E·17 '0IE{)2 1.I1E·1(i 7.93E·17 1E·16 5.S5E-oJ-I.58E-1<1 1.09E·15 lE-15 1.93E-Ol
I·Oct·8.:4.:8E-16 SE-17 aw::.(lJ 1.36E-15 6.57E·17 4E-I7 453E-02 1.10E·17 9.55E-17 8E17 5.5OE·Q-4 9.63E-15 1.43E·15 2£-15 1.23E.ol
2·Jan·85 5.30E·17 SE-16 1.QGE;-o3 3.54E·15 1.60E·16 5E-17 1.18E-ol 700E-18 8.98E-17 7E·17 3.50E-o.:2.57E-14 1.46E·15 IE-IS 3.21E·01
I·Api·85 O.(:OE+OO SE-17 O.OOE~OO 3.55E·17 1.97E-16 lE·16 1.18E·02 435E·\7 6.56:;-17 5E·17 2.18E-03 5.02E·ls 8.75E_00 :lE·16 6.23E·02
1·JJI-85 9.36E-16 5f:-17 1.87E-02 6.00E·16 USE-14 6E·16 2,00E-ol 2.36E-16 1.14::'-16 7E·17 1.18E{l2 7.48E-15 1.08E·15 9f-16 9.35E:-{)2
30·Sep-S5 1..o(6E-15 6E_16 2.91E-02 2.33E-16 8.o1f·17 7E·17 7.78E.o2 5.38E·16 1.090::-16 9E·17 2,6SE-Q2 7.86E·15 7,5OE'16 8E-16 9.83E-02
2-Ji!n·86 3.40E-15 2E.15 1.68E-01 7.69E-16 I.00E-15 lE·15 2.56£·01 299E·16 8.13E-16 3E·16 1.50E-(l2 2.12E-14 26OE·14 5E-15 2.65E·OI
I·Apr·86 5.79E-15 2£-18 1.16E-Ol 7.6OE-16 9.!ME·17 5E·16 2.53E.Q1 1.34E·15 5.50;::·17 4E·18 6.71E-02 1.33E-14 3.08E·16 lE-16 1.66E·OI
30-.}Jn-85 5.19£-15 lE-I/'1.04E.ol 5.60E-16 3.73£"7 4E·16 1.93£'01 220E·15 4.00E·17 sE·18 1.10E.QI 7.14E-16 T89E-16 lE·15 8.93E-03
27-Oc1-85 4.60E-15 l(;:'IS 9.2O€-QZ 7.83E-15 I.IOE·16 2E-16 2.6IE·01 237E·15 l.ooE-I(;IE-Hi 1.19E·01 1.13E·14 200E-16 3E·18 1.41E-01
IS-Dec'56 2.75£-15 3E-18 5.5OE.o2 4.67E-16 lWJE·17 2E-17 1.56E-ol 93!}E·15 1_00E-16 "E·17 4,7(1E-02 1.2OE·14 200E-16 4E.\7 1.50E-Ol
1e·Mar·87 4.64E-15 3f·IS 9.28E-02 5.90E-16 1.20E·I6 8E:-18 1.97E{)1 497E·16 l.OOE-16 6f'18 249E<l2 5.89E-14 1.00£,15 IE-17 7.36E·01
Il--l\f,a~"87 4.3sE-IS 61;·18 8.70E-02 1.18E·15 2.ooE·16 fiE-18 3.93E{)1 USE·15 I.00E-16 5E·17 565E{)2 2.2IE-14 6.00£-16 3E·17 2.76E·Ol
g·Sep-87 6.~gE_15 8;:-18 1.28E-ol 1.23E·14 I.00E-15 1(::·1(;4.lOE~OO 2.26E·15 2.ooE-16 o:E·\7 I.l~E{)1 1.57E·l'1 1.00E·15 IE-16 1.%E·Ol
2-Nov·87 6.i2E-t5 6:-·18 1.34E-ol 1.50E·14 1.ooE·15 4E-18 5.00EfOO 2.20E-I5 2.00E-16 6E·18 IIOE-01 255E-14 I.OOE·15 3E-17 3.19E-ol
16-Feb-88 1.91E-15 5=.·18 3.82E-02 4.53E-16 7.0JE-17 2£-11 151E·01 4.42E-16 6.00E-17 2£-17 2.21E{)2 4.44E-14 2.00E·16 5£·\7 5.55E--ol
18·I-t.ay·88 1.78E-14 3=·18 3.56E-Dl 1.3SE·t4 3.0JE-15 2E-17 4.50E~00 4.92E·15 8.00E-17 2E-l7 2,45E-02 138E-14 2.ooE-16 4E-17 1.7=3E.{)1
15·AIJg·8S 1.56E-15 4E·IB 1.$1;;:-01 4_3SE-14 1J»)E-lS lE-17 1.46E..0;1.5IE·IS 1.00E-16 2E·\7 7.55E-02 1.97E·14 2.00E-16 2E·17 2,46E·OI
14·f\bv-8S 1.47E-1<4E·IB 2.94;::-01 3.3IE-14 3.())E-15 IE-17 1.10E+Ol 257E·15 I.00E-16 lE-\7 I.29E-01 2.12[;,·14 2.00E·16 3E·17 2,65E-Ol
13-Feb--8:1 2.47E-1S 4E·17 4.94E-{l2 1.56E-15 1.02E·16 IE-16 52ilE.Ql 6-94E·15 5.IOE-17 2E·15 3.47E-02 2.12E·14 3.06E·15 5E·16 265E-OI
IS-N.ay-89 2.5OE-16 lE·IS 5.00E-03 3.14E·15 1.00E·16 7E-1S 1.05E~OO 9.0~E·'6 7.ODE-17 7E·16 4.52E-02 805E-15 1.ooE·16 ~E·17 101E-01
14·Aug·B9 6.5OE-15 5E-17 1.3OS-01 7.68E·15 2.OClE-IS ge-I8 2.56EfOO 2.35E·15 2.00E-16 SE'16 1.IEE-Ql 9.95E-15 1.OCE·16 5E·17 1,24E{)1
13·Nov-89 9,63E-15 2c-17 1.93£-01 4.72E·15 2.00&16 3E-18 157E+00 403F.·15 2.ooE·16 SE·1S 2.01E-Q1 199E-14 3.OCE·16 2<:·17 249E{)1
12·Feb-9Q 8.52E-t5 3E-18 1.78E-ol 4.05E·15 2.ooE-16 6E-18 1.35-E~OO 2.8SE·15 2.ooE·16 2E·17 1.45E-01 269E-14 2.ooE-16 4E·17 336E{l1
14·May·9Q 8.90E-15 IE-16 1.78E-ol 3.56E·t5 3.00E-16 1E-16 U9E~OO 2--33E·15 2.00E·16 lE·If,1.17E{}I 209E·14 4.ooE·15 2E·16 26IE·OI
13·Aug·W 1.92E-15 11::-16 3_&4E-(l2 3,58E'15 8.00E-I7 IE-16 l.19E~00 5.06E·16 6.00E-17 lE·16 2,53E-02 886E·15 2.00E-16 2E·16 1.\IE·OI
12·Noy·SO 2.9IE-15 IE-16 5.1l2E.o2 187E·15 2.ooE-16 lE·16 6.23E-01 '-08E.15 l.OOS-16 1E·16 5.40E.(I2 2,19E·14 4.00E·16 2E·16 2.NE-ol
11·Feo-91 1.67E-16 lE-16 3.34E-03 225E·17 2.10&17 lE·16 7.50E.Q3 6.38E-17 2.50E-;7 lE·16 3.1SE-03 4.19E·14 1.ooE-15 2.E·15 524E·01
13·r/.a}/""SI 1.87E·16 fE-16 3.74E-0~7,89E·16 1.00E·16 lE·16 2.63E-01 3.54E-16 9.00E-17 IE-16 I.nE-02 1.40E-14 l.DOE-15 2E·15 I75E-QI
12·A:Jg-91 4.85£'16 lE-16 9.70E·03 26:E-15 2.00E-16 IE-16 tl.70E.oI 1.27E-16 tl.(>QE-17 IE-16 6.35E-03 22{1E·14 5.ooE-16 2E·15 2.75E·01
II·N:)Y·91 1.nE-16 lE-16 3.54E.{l3 4381':,16 7.00E·17 2E·n 1.46€-Ql 3.76E-17 3.00E_17 2E17 1.8SE·03 1.15E·14 2.001;:-16 lE'16 1.4.;E·OI
10·Feb-92 I.83E-16 lE-16 3-66E.(l3 1.46E-16 6.00E-17 2E-17 '1.87E-02 1.33E-16 4.('OE-17 lE·l7 6.65E-03 3.35E·14 6.00E-17 IE·16 4.19E·OI
II·May-92 4.<10£-16 IE-\6 8.80E-03 1.95E·15 1.00E-15 2=-19 6.sOE-01 4.04E-16 a.WE-l7 2E-19 2.o2E-02 1.41E·14 2.00E-16 IE·18 1."I6E·Ol
IO·Aug·92 9.09E-I?2E-I&1.82E-Q3 256E-16 4.ooE-17 4:-18 a.~3E-02 4.5OE·17 ~.(:OE-17 ZE-18 2.25E·03 157E·14 2.00E-16 2E·17 1.96E·Ol
9-.\,ov·92 2.07E-16 3E-21 4 ME·03 115E-16 3OOE·17 4!:-18 3.83E-oZ 3.62£-17 2.EOE-17 3£·18 1.8IE·:)3 224E-\4 3.00c-H'-ZE·li 2.8CE·01
9·Feb·93 1.73E-16 1£-22 3.~6E-03 O.ooE.oo aoOE·17 4E-Ia O.OOE+OO 2,89£-17 4_30E-17 3E·18 145£-:>3 3.~E·14 5.00E-16 2E·17 3.85E{)1
10·May·93 2.70E-17 3E·22 5.40E-04 2,76E·17 3.2OE·\7 4E-18 9.20E{)3 8.74E-17 5.ooE-17 3E·18 4.37E~J3 1.25E·I.o(2.00::-16 2E·l,1.56E-ol
10·Aug·93 9.00E-17 lE·18 l.lIOE.{l3 2,sOE·n 3.90E·17 4E-IM R33E-03 O.OOE~OO 3.70E-17 3£·18 O.OOE..OO 1.50E-I':3.00£-16 2E·17 l.88E·Ol
S-NoY·93 O.O:lE+OO 2E-18 O.ooE...OO 1,76E·16 9.ooE·17 4E-18 5.87E.Q2 6.0DE-17 I.00E·16 31:,18 3.00£-03 1.7!:E·g 4.00E-1(j 2E'17 2.ISE{)1
7·Foo·94 1.\OE·16 2E-16 1.83E-ol O.ooe...OO 1.58E·16 4E-18 O.OOE..()()2,2IE·16 2.30£-16 3E-18 2.46E-02 3.08E·lO:6.00E-16 ~E·17 5.13E+OO
9·May·94 3.80E-16 2E-17 5.33E-ol 3.3fE·16 1.2OE-16 4E·17 1.13E..00 3.46E·16 I.00E-16 JE-17 3.84E-02 I.nE·14 2.00E-16 &,E·15 2,asE+oo
9·Aug·94 3.85E-16 IE-16 6.r.2E.{l1 2.8~E·16 9811;:;-17 IE·If;:9.40::-01 1.00=-16 1.73E-17 lE-16 1.11E-02 LOCE-16 1.00E-16 ;:E·15 1.67E·02
]-Nov·94 6.21E-17 lE-16 1.04E·Ol 3.5310.16 4,2IE·17 lE-16 1.18E,00 1.96E-.16 2.OSE·1?IE-16 2.18E-02 1.0CE-16 I.DOE-16 2E'I~1.67E{)2
7-!"eb--95 3.7DE-16 lE-16 6.17E·Ol 9.7(-E-I;l.ooE·16 IE-16 3.23E-ol 9.7CE-17 3.02E-17 IE-16 1.08E-02 8.B4E·15 3.SSE-16 ;E·l~.1.47E..00
9-II.<'.y·95 9.4DE·17 lE·16 I.57E-OI 9.8CE·I7 1.ODE-16 lE-16 3.27E-ol 1.902-16 2.48E·17 IE·16 2.IIE-02 2.9OE-15 1.7QE.-16 .<E·15 4,83E-ol
9-Aug-95 1.4SE-16 1E·16 2.q2f-QI 2.&E·16 378E·17 lE-16 9,53E-ol 7.10::·17 :1.62E-17 IE-16 7.SSE.{l3 2.70E-15 2.17E·16 .<E·15 4.5CE-OI
11·Noy·9S 1431"-14 lE_16 2.28£..01 2.3IE·15 12~E·16 2E-16 7.70E..00 2.6IE·15 7.51£·17 2C-13 2.9(lE·01 S.60E-15 2.48£,16 IE'15 9.3;'!E.o1
5-feb·96 1.19E-14 IE·16 1.99£..01 5.7CE·15 195E·16 lE-16 1.901"+01 6.10::-]5 1.801"-16 lE-U>6.78::'-{ll 6.4BE·1S 3781':·16 IF-IIi 1.08E..00
5·May-96 4.55E-15 11"·;6 7.5-8E-OI 31l{]E·16 31OE'I7 11"-16 1.27E+00 2.84::-16 1.471"-17 lE·16 3.16~.Q2 7.68f-15 5.74E·I6 IE-16 1.281"+00
5·Aug·96 7_76E-15 1£-16 l.30bO()3.57E-15 2.42E-16 1E-16 1.19E...OI 1.69::-16 1.42E-17 1£-16 r.88::-{}2 4.9OE-1S 2.92;::-16 11"-16 8.17E-ol
6-1I:0-J-96 1,3OE_15 IE·16 2.271"+00 3.511",15 1,6610.'16 1E·16 1.17£..01 4.2IE·16 J.S6E-17 le-16 4.68:-1)2 1.l0E-14 4.35:-16 11';:·16 I.83E+OO
6-FclJ-97 I.(lOE·15 lE-16 1.671"-01 1.00E-15 NA 11"-16 3.33E-01 1.03E-16 1.55E-17 IE·16 I.14E-02 67fiE-15 3.27E-16 11"·16 U3E...00
5·rl.ay·97 1.00E·15 11"·16 1.67E·Ol 1.4l}E·16 2.51E·17 11"·16 4.67E-Ol 2.241",16 1.671"'17 lE·16 2,491"-02 4.55£-15 2.84E-16 lE-16 756E-ol
It·Aug·9'4.74E--16 ..A 7.90E-ol 4.QCE-15 3,98E·17 lE-16 1.33E~00 <1.0E-16 NlA lE-16 O.OOE..OO 5.55E-15 2.901"-16 IE-I6 9.25E-ol
5-Jan-98 8.3IE:'I\'1E·16 \.39E.00 9.olE·16 IVA IE-1(>3.02E~00 1.nE-IG NlA 11"-16 1.97E-02 5.loc·15 N'A IE-16 a.80E{)1
28·Apr-98 3.321"·16 lE·16 5.53E-01 4.62E-16 2.611"·11 IE-,6 1.61E+00 1.21E-16 7.68E-18 lE-16 1.341:-02 7.43E-15 3.24E_16 IE-16 1.24E.00
31-Ju1-98 4.60E-16 lE-16 5.11E·01 4.4:£-15 129E·16 IE-16 10461"+01 3.54E-16 1.23E-17 IE'16 3.93E.{)2 6.9IE-15 3.66E-16 lE-l6 1.ISE_00
28-5ep'98 4.08E-16 lE-16 ~.53E-OI 9.02E-16 5ZE-17 lE-16 3.0IE+00 2.53E-16 1.08E-17 lE-16 2.81E-{}2 4.521:-15 2.09E·16 lE-16 7.53E{l1
:<S-Oec·98 7_72E-16 1£.16 8.SSE-01 4.93E-16 2.61E·17 lE-16 1.64E~OO 3.43E-16 3.07E·17 IE·16 J.61E{l2 6.73E-15 2,20E·16 1£-16 1.12E+00
29"&f·99 5.IIE-16 IE·16 5.68E{l1 3.75E-16 2.19E·17 1E-16 1.25E~OO 3.70E-16 1.52E-17 1E·16 4.IIE{l2 8.96E-15 3.S8E-16 lE·1G 1..19£,00
3-JIH9 5.9OE-16 IE-16 6.56E{l1 4.70E-16 3.04E·17 1E-t6 1.9E+00 1.28E-16 6.75E·18 lE·16 1.42E~OO 6.40E·15 3.5IE-16 IE·16 1.07E+OO
27-5ep·99 t.70E-15 IE-16 1.89E+00 9.SSE-16 5.9IE·17 lE-16 3.30E..OO 4.61E-16 3.71E·17 1E·16 5.13E-02 7.seE·I5 3.49E-16 lE·16 l.J1E~OO
:<S-!M::.Q9 1.03E-t5 IE·1b 1.15£+00 7.50E·16 6.91'E·17 IE-16 2.~E..OO 2.43E-'5 2.87£;·17 IE-16 2.70E-Q2 6.42E·15 3.46E-16 IE·16 1.07E~OO
21.Mar-OO <1.00E-16 IE-16 d.l1E-{)1 7.5OE·16 1.93E·17 IE·16 OO·Jarl..JO 2.20E-16 893E.18 lE-16 2.45E-02 5.611;.15 2.36E-16 1E·16 9.34E·01
26.Jun-DO 1.75E·16 lE-16 2.92E{)1 2.13E-16 I.8SE-17 IE-16 7.10E-01 1.·.1E-16 1,29E·17 IE-16 1.23E-02 3.9.2-E·15 2.51E-16 IE·16 6.53E{l1
26·~p-QO 3.6SE-16 lE-16 3.95E-01 3.OSE-16 134E·17 1.E·16 1.03E+-OO 2.24E-16 7.44E-18 l.E-16 2.49E.{l2 7.7SE-1S 2.19E-16 IE-16 1.30£..00
26'-Oc-<:--OO 2.21E·16 1E·IS <,-52(.{l1 2.01E-16 1.04E·17 lE-16 6.70E-Q1 4.35E-16 1.0'1£-17 lE-16 4,83E·02 6.45£-15 2.25£-16 IE-16 1.4IE..0026-1l-~ar.Ql 1.45E-16 lE·16 1.61E-01 <1.00E-16 "A 1E-16 <3.33E-o'dOOE·16 NA lE-16 d.llE-02 6.3lE-IS 3.58E-16 IE·16 1.05E..OO
2-Jul.-{\1 <I.OOE-16 lE-16 NlA d.ooE-16 NlA lE-16 3.33E·Ol <1.ooE·16 NlA lE-16 ..1.lIE-02 6.99£-15 I.30E-16 IE-16 1.I7E..00
24-Sep-ol 1.9IE-15 lE-16 2.12E-{l1 l.o5E·16 2,62E-18 lE-16 3.5IE-Ol 2.0IE-16 2.45E-17 lE-16 2.32=.{)2 8.04E-15 1.64E-16 IE-16 1.34E+00
JI·O(c·OI I.3-3E-15 lE·16 1.~-4E-Ol ..1.00E-16 IVA lE-16 <3.3::·E{)1 -=1.00E·16 WA lE-16 <I.IIE-02 1.83£-15 1.64E·16 IE-16 3.06E-Ol
I·ApI.()2 2.2OE-16 lE-16 2.44E-Ol 2.o5E-16 '68F.·17 lE-16 6.85E.{l1 I.26E-16 7.441':_18 lE-16 1.·lIE-02 l.4SE'IS 1.62::::-16 IE-16 1.2Sl:.+00
I-Ju!-Q2 1.97E-16 IE·16 2.19E-ol 3.3eE-15 321E·16 lE-16 1.13E+00 d.OC'E·16 NlA lE-16 <1.I1E{)2 7.4CE·15 1.80:;-16 lE-16 1.13E...00
3O·St:jl-02 2.30E·16 1E-16 2.56E.{l1 4.IOE-16 313E·17 1E-16 I.37E+00 I.56E-16 5.95E-16 IE-16 1.73E-02 4.21E-15 1.03:;'16 IE-16 7.01E{l1
3::Hh:c.o2 ..1.roE-16 lE-16 ..1.11£-01 2.42E-16 1.79E·17 IE-16 6.05E-OI <1.OCE-16 IVA IE-16 ..1.I1E-02 9.42E·15 4.68E·!5 lE-16 1.57E~00
31-1'i!ar.Q3 2.50E-16 lE·16 2.78E-ol 1.92E-16 1716_17 IE-16 6.39E-01 1.292-t6 2ABE·18 1~-16 1.44£02 4.55E-15 1.18E-16 lE,,6 758E{)1
3:)·Jun.{l3 <1.COE·16 IE-16 <1.11£-01 1.69E-16 l.5€E·17 1E-16 5.46E-ol <1.00E-16 IVA lE-16 ..1.11E.Q2 4.2OE-15 1.l8E-16 lE-16 7.0IE{)1
29-Sep---{}3 <1.00E-16 IE·16 <1.11£-01 2.8lE-16 2.42E·17 1E-16 9.56E.{l1 3.32E-16 2.42£-17 iE-16 3.68E-02 8.6SE·15 1.88E-16 IE-IS 1.45E..00
29·0ec.Q3 1.02E-16 IE·1S l.l3E·OI 8.53E-16 3.5:E·17 lE-16 2.B4E+00 U9E-15 5.97E-17 IE-16 I.66E-ol 9,45E-15 1.95E-16 IE-16 1.58E+oo29-MM-Q4 <U)()E-16 IE-II';"",11EoOl d.OOE·16 NlA 1E-16 ~3.33E-ol <1.0CE·16 IVA IE-16 d.l1E-Q1 <2.00E·15 ruA lE-IS ..333E·or
27-Jun-04 <1.00E-16 IE·16 d.IlE·OI 1.2SE-16 9.nE·lll IE-16 4.2IE·Ol <'-00E-16 'VA lE-16 <1.I1E-ol 3.23E-15 211E·16 ZE-15 5.53£O{)1
27-Sep-D4 ..1.00E-16 IE-16 ..1.1IE-ol 2.53E·t6 I.3SE·17 lE·I6 8A4E-ol <1.00E-16 IVA lE-16 <UIE{l1 9.68E-15 2,soE·16 2E·15 1.61E+00
27-0ec-ll4 ..1.00E-16 IE-16 <1.11E.{l1 I.ISE·16 9.78.E-lll 1E-16 3.83E.{l1 <1.QOE·16 'VA lE-16 <U1E{l1 1.37E-14 U6E·16 2E-15 2.29E..OO
28·Mill·05 <:,OOE·16 IE·16 ·'''.:IE-01 2.30£-16 1.8CE-17 lE·16 7.66E-ol 3.l5£·16 2.9IE-17 IE-Hi 3.5IE-Q2 9.22::'-15 l.54E-16 lE-ls 1.ME_OO
29-J\J:l-Q5 1.47E-16 IE-15 1.63E-ol 2.56E-16 2.2:<E·17 IE-16 8.85E.ol 1.42E-16 !.66E-17 lE-16 1.58£-02 9.34:::-15 1,65E-16 2E·IS 1.S6E..oo
25·Sep.Q5 2.0IE·16 IE·16 2.23E-ol 1.45E-15 9.4:!E·17 1E-1S 4.82E..00 UOE-t6 5'36E·17 lE-16 S.33E-02 2.12<='-14 &.39E-15 2E·IS 3.53E~OO
3·Jan-(l6 454E-16 IE·16 5.05E-{ll 2.06E-16 2.3SC·17 IE-IS 6.87E·01 d_00E-16 tVA lE-16 ·d.IIE-11 3.60E·14 6.27E.j6 2E-15 5.99E+OO
3·Ajlr.{)Ej 199E·16 lE·1&2.2IE·01 1.24E·16 3.20E-17 U:':-16 4.12E·01 ..I.DOE-16 tW.IE-IS -<1.1IE~:>1 8.36E-15 4.42E-16 2E.·15 l.391O+OO
L-}·Jul-06 276E-16 lE·16 3.07E-ol 1,32E-16 2ADE-l?IE-IS 4.4IE-01 <I.OOE-16 __"_A_IE·t6 ..-1.11E.Q1 1.03E-14 4.79(_:6 2E·15 1.72£.00
2--ocl-05 4.97E·15 lE-16 5.52E-ot 2S3E·16 5.93E-17 IE-15 B.nE-OI ..1.00E-16 NA IE-16 <:I.llE-ol I.£CE-14 5.83E-16 2='-15 2.66E..OO
hJan.o7 6.46E·16 lE-16 7.18E.Q1 2.37E-;6 5.93E-I7 IE·1S 9.11E-01 <I.0DE-16 5.9J£·17 IE-16 ..1.11E-Ol 2.IOE-14 6.73E-16 22·15 3.50E~00
2-Ap'-07 7.08E16 IE·16 7.85E·OI 2.8IE-16 4.52E-17 IE·16 9.J7E-01 <1.0DE-16 NA 1E-16 <1.111::-02 I.S4E·14 4.22E-'6 Z€·t5 2.57E+00
2·.tur-07 9A1E·16 :E'16 1.05E+CQ 3.20E-16 6.96E-17 IE-16 1.07F...OO I99E·16 8S3!O-17 IE-16 2.21£-02 2.56E-11 8.:'OE'\6 2E-15 4.26E..00
30-Scp'07 330E·16 lE'16 3.67E-01 1.46::·16 3_3OE·16 IE-16 HSE:-{li ..1.00E-16 "A IE-16 ..1.11E-02 7.57E·15 2,94E-16 2E·15 1.26E+00
31-Dec-07 1.42E-15 lE·16 1_58E.00 5.50';::-16 1.42E·16 IE-16 I.83E.oo ..1.002·16 IE·16 ..\.IIE-02 9.93E-15 2_91E-'16 2E·15 1.65E+00
31·1.1.'\(·08 1,25['lG IE'IG 1_39E'OI <I.OCE·II)NA lE-16 <O.3-3J <1.00:'16 '"1E-16 ..3.J3E-<l1 4.09E-15 3.04£-16 2E·15 6.81E-ol
30-Jun-{t-8 1.2oE-IS 1E·16 I42E.OO 772F.16 2.091':_16 IE·16 2.57 3.61E-16 '"lE-16 2.57 1.l0E·14 5.73£'16 2E-15 1.97E+OQ
30·Sep-oa 2.72E·15 IE·16 302E·OO 1.27E·15 1.39E-17 lE-16 4,23 7.E6£·16 IOOE-15 lE-16 8.51E·02 1.14E·14 ,'.12E'16 2E·15 1.83E+oo
31-0ec-08 2.88E·15 IE·16 321Etoo 1.10E-15 3.52E-16 lE-16 3,67E+00 6.~-6E·16 l00E·16 IE-1Ii 7.29E-02 1.38E-I'I 5.55E·16 2E-15 2.30E~OO31·1>1<1,-09 1.5€E·15 IE'16 1.7JE.OO 4!>7E'16 7_80E-1l 11:0·16 1.52E..OO 2.99E·16 300E·17 lE·15 3.22E..o2 4.97E-15 1.66:;·16 2E-15 8.28E·Ol
3Q·Jun·C.g 5.6iE·I'IE_16 63Cl':{)2 2.I7E·16 3.IOE-17 IE·16 7,24E·OI 1.51£16 109E·17 IE·IG I.NlE·C2 4_471:-15 J.46E-16 2E-15 T..4Sf:..(Jl
Tab 4
BHV-4 Radiionuclide Concentrations (uCilml)
1.00E-11
1.00E-12
1.00E-13
"G)1.00E-14
iii(,,)rn
C)o
d.1.00E-15
1.00E-16
1.00E-17
1\~......~\......J«....J.\./\&\1\..tl ..
flY IV ~..I I \/~'J."~T •.A /\jllI ~
q.lHl •'......It~llI'•....V V ""+1';41/•f ]r\~~•~~~~
I....~~I\IJ~W'1I M\6-II g-\I ...1I .~J~T ....
'r'11,'l.IU,.!.NL U ~1M /'J.~W~.,JVl ~J
••..'v...
1.
1.00E-18
~~~~~~~~~~~~~~**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
l-+-serieS1 -+-Series2 -'-Series3 -+-series41
Effluent Concentration Limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit =5E·12uCilml
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
BHV-4 Uranium Natural Concentrations (uCilml)
1.00E-11
•1tt~~
\I ...\I •vr T'\
~f \ \~1\.t +,
••, I \1\1\I.......it JV"
~..~.J V II V-"'\j \f
..
,
1.00E-13
1.00E-12
1.00E-16
1.00E-17
1.00E-18
q,"q,t),q,"':!q,b<q,~q,ro ~q,'O q,0)~~~"~t),~"':!~~~~~ro ~~'O ~O)~~~"~t),~"':!~~~~ro &-~'O############################
G)1.00E-14
«iCo)
(J)
OJo
c1.00E-15
1.00E-11
Effluent Concentration Limit =2E-14 uCi/ml
ALARA Goal =5E-13 uCi/ml
Pre 1994 MPC Limit =8E-14uCi/ml
Pre 1994 ALARA Goal =2E-14 uCi/ml
BHV-4 Thorium-230 Concentrations (uCilml)
1.00E-12
1.00E-13
'Q)1.00E-14
iU(Jen
C)o
::::!.1.00E-15
1.00E-16
1.00E-17
I \
11 .t +\\
1.L ~N
"If \Y ••~"t ..4
II.6 .•T ........~
I ./1 ,~\t /....\ 7 1 .It"\.j ~T ...1..~\1
~~~~TV \1 ~\I ,...\J \I.\4 ·v
....
1.00E-18
~~~-~~~~~~~~~~~~~~~~~~~~~~~~~~~~'jS ~~~~95 9S 9-l 9-l 9-l 5!S ~9S 9-l 5!S ~~$)$)$)>S 55 ~$)>S############################
1.00E-11
Effluent Concentration Limit =9E-13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
BHV-4 Radium-226 Concentrations (uCilml)
1.00E-12
1.00E-13
'i'1.00E-14
~(J)
0'1o~1.00E-15
1.00E-16
1.00E-17
\
,
I r..
~~.....-"4~
~t \,\f I \.t .\.
~•1\I'..c\/\./.\+'61 I l\.f\I '\
V.l.I II ~t \I \N\•Vv-J.~V l\~l J~\1\1 ~
....
1.00E-18
~"~fl"~"':1 ~~<,;,~~~~'O ~O)9~9"9fl"9"':1 ~9<';'9~~9'0 90)~~~"~fl"~"':1 ~~<,;,~~~~'O~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1.00E-11
Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA Goal =1E-12 uCi/ml
BHV-4 Lead-210 Concentrations (uCi/ml)
1.00E-12
1.00E-13
'i'1.00E-14
Ciiu(J)
Clo
c1.00E-15
1.00E-16
1.00E-17
,
,
•~9
1~1 1\t ...••\.&&A.1i\.1\.r\A ..t\...f
11 1\/A J ...Y \/\/v~..v •.AI ,f'¥~
\.I I •~V V...
1.00E-18
2)"2)'1-2)t>.;,2)1><2)~2)~2)A,.'JJ~2)'?>Q,f\:)Q,"Q,'1-Q,t>.;,21>'Q,~Q,~Q,A,.Q,~Q,'?>~f\:)~"~'1-~t>.;,~I><~~~~~A,.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
LOCATIO.\!8HV·5
URANIUM NAT.THORIUM·230 ft,\OlUM·226 LEAD·210 ._-
PERIOD GROSS LtD ~~GROSS COUNTING LLD %GROSS COUNTIN3 LLD %GROSS COlNTING LLO ":<
ENDING COI\C·vCilcc (IE·16)M?C CONG.uCilcc ERROR (lE·16)MPC CONC.I.,CI!cc ERRCR (IE·16)MPC CONC.IlCifcc ERROR j1E-16)MPC
28·Sep-81 2.44E-15 IE'16 4.68E-02 1.53E·15 4.1IE-16 IE-16 5.10E{)1 754E·16 -l.3IE-16 lE·n;3.77E<lZ 1.69E·14 2.57E-15 2E·15 2.1IE-<JI
14·DeC'SI 4.8410-15 IE_16 9.68E'{)2 2.76E·15 3.55E-16 lE·16 9.27E-<l1 I.8-1E-15 2.ME·I!)lE·16 92CE<l2 1,53E-14 226E·15 2E·IS 1.91E-OI
29'Mar-82 I.04E-15 9E-16 2.08E-<l2 2,62E-15 9.49E-16 3E-15 8.73E{l1 1.11E·15 4.52E-IS 410·15 555E.(I2 298E·14 8.16E-15 2E·14 3,731;,01
3Q.J'Jf\-82 3.6IE-15 5E-17 7.22E'{)2 7,SIE-15 9.40E-16 7E-17 2,54E.00 1.35E-15 2.19E-16 2E-16 6.95E-02 1.80E-15 1.85E-15 2E·1S 225E-02
27·Sep·82 1.7IE·11 lE-1S 3.42E-ol 9,46E·15 6.02E-16 lE-16 3.15E-t00 3.8OE-IS 4.68E-16 1E-16 l.9CE-01 235E·14 4.65E·15 2E-15 2.94E.{JI
3-J<1Jl-(I3 :9QE_14 510-17 3.60E-Ql 5.nE-15 1.99E-16 3E-17 1.92E.00 9.34E-!1 3.IOE·16 6E·17 4.67E-03 4.32E·14 2.8CE-15 ZE-15 5.40E.()1
4-Apt-33 loslinlab 2_33E·15 1.ooE-16 2E-17 7.77E-Q1 5.93£·1S 1,(I8F.-16 9E.17 2.97E-Q2 3.01E·14 1.40E·15 SE·16 376E-QI
3Q·Jvn·8J 7.62E·16 5E-17 1.52E-02 325E-15 1.70E-16 6::-17 1.CB!:+OO 6_28E-15 3.59E·16 1E·16 3.14E-Dl 2.69E-14 1.OC:E-15 IE-IS 3.36E--{)1
3-oct-a3 4.00E·16 IE-16 9.72E-Q3 1.10E-15 3.09E-16 lE-16 3.67E-QI 3.63E-16 I.GIE-16 IE'16 1.B2E-D2 2.0SE·14 1.13E-15 SE·16 2,60E--{)1
3-JM-84 6.96E-15 IE·16 1.39E-Ol 9.69E·16 9.66E·17 5E-17 3.Z3E-OI 9.6OE-16 6.S3E-17 IE-IS 4.8OE-D2-lB3E+1 2.92E-15 2E·15 229E·OI2--Apr--84 1.64E-15 5E-17 3.28E-{l2 1.34E-15 1.20E·16 7E-17 4.47E-{)1 3.68E"-lS 2.29E-16 SE-I7 1.9"E.(II 4.67E-14 2.1OC-01 lE'15 5.84E·OI
2·Jul-84 1.12E-15 5E-17 2.24E-02 1.92E-15 1.69E·16 7E-17 6.40E{)1 3.3IE·15 2.70E-16 lE-16 1.'36E-Dl 221E-14 1.2OE-15 IE'16 2.76E.ot
1·0c\-84 U1E-15 5E-17 2.22E-02 3.13E-16 1,26E-16 5E·17 1.04E·OI 4.2IE-16 1.34E-16 lE-16 2.11E-02 1.57E·14 1.39E-15 IE·15 196E-OI
2·JsI1-85 7.32E·16 6E-16 1.46E-<l2 S.7IE·lS 1.66E-Hi 5E'17 2.24E·01 4.94E·16 1.35E-16 1E-16 2.47E-02 2.42E·14 1.26E-15 9E·16 3.02E--{)1
I-Apr-8S 2.35E-16 5E-17 4.72E.o3 5.4JE·16 2.18E·16 lE-16 1.81E-ol 2.71E·16 9.ooE-17 7E-17 l.J6E-02 1.25E-1':1.0ZE-15 m:·16 I.5€E-Ql
1·JL:l-85 7.58E·16 5E-17 1.52E-Q2 400E-16 9.43E·16 5E-16 1.33::·01 6.9OE-16 I.SOE-16 9E-17 H5E-02 2.15E-1':1.42E·IS SE·16 2_69E-ol
30'Sep'85 7.47E·15 7E-16 IA9E-QI 1.I£E-15 1.42E·16 8E·17 3.81E.()1 2.15E-15 2.21E-15 1E-16 1.I0E.(I1 9.20E-15 1.11E-15 lE·15 1.15E.oI
2·Ja~·86 1.7SE-14 61:0-16 3.WE-QI 7.24E-15 2_20E'I:)IE-IS 2.41E~OO 3.83E-I5 3.83E-15 1E-16 1.92E-01 l.13E-16 1.00E-15 lE·15 1.41E'()3
1·Apr·86 2.99E-14 2E-18 5.98E-01 7_641:·15 630E-17 4E-18 2.55E+00 1.51:,-14 5.02E-16 4::-18 7,57E-Ql 2.22E-14 5.04E-r8 ~E'17 2.78E·Ol
JO·Jun·86 2.23E-14 IE-O 0(.47E-OI 5.15E·15 3_30E·16 2E-17 1.73E..00 1.05:-14 1.00E-16 4E-18 5.24E-ol 2.I€E..t4 2.00E-15 ~-15 2.70E·l}1
27.Qct-8S 2.33E-14 lE·18 4.66E.(I1 nBE-IS 3_00E·16 2E-18 2.59E..00 I.60E-14 l.QOE-IS lE-18 8.ooE-01 2,02E·14 2.00E-16 '2.E-t8 25JE-ol
15-0ec·86 3.40E-14 3E·17 6.00E-OI 5.35E-15 2_00E·16 2E-17 1.78E..00 1.47E-14 5.00E-IS 4E'17 7.J5E-{l1 2.82£:-14 2.00:-16 3E-17 353E.oI
16·Mar·87 2.06E-14 3E-18 4.l2E-01 4.5OF.-1S 3_OGE·16 5£-,a 1.50£.00 6.74£'15 2.00E-16 4E·t8 3.37E-ol 7.Z9E-14 1.00:::-15 7E-16 9.11E{)1
11-May·87 2.50E-I~5E-18 5.ooE-01 8.54E-15 2,00E·16 5E-18 2.65E..00 8.15E-15 3.0JE-16 SE·18 4.08E-Q1 3.28E-14 2_00E·16 ::E-11 4.10E.()1
9-Sep-87 2.65E-14 5E·18 5.3OE-ol 6.62E-15 3.ooE·16 7E-17 2.21E+00 9.34E-15 3.0JE-16 2E-17 4.67E-ol 2.77E-14 4.00E-16 1E-16 3A6E{)1
2-Nov-87 1.80£:;-14 4E·18 3,{iOE-{jl 7.QgE·15 3.0<:·E·16 4E-18 2.36E..00 7.20E·15 3.ooE-16 4E-18 3.60E.ol I.77E-14 5.00E-16 lE-11 2.21E-01
16.f€:b·8B 1.0IE·14 51:-18 2,02E-01 2.981:-15 l.DCe·16 2E-17 9.93E-OI 3.93E-15 I.OOE·16 2E-17 1.97E-ol 3.36E-14 2.00E·16 5E-17 4.WE-01
18·.~y·88 1.78£-14 3E-18 3.$E.()1 8.14E-15 3.o<:E·16 2E-17 2.71E-t00 7_43E-15 3.00E-16 2E-17 3.72E-ol 2.12;:-14 2.ooE-16 4E-17 2.65E'OI
15-AuQ-8B 1,79E-14 3E-18 J.58E{)J 1.49E-14 l.OCE-15 IE-17 4.97E+00 5_34E-;5 2.00E·16 2E-17 2.67E-01 2.-45:-14 3.00E·16 2E-17 3.06E-ol
14-N0'<-88 4.46E-14 3E-l6 8.92E-Ql 1.33E·14 2,OOE-16 IE-17 4.63E+00 1.17E-14 2.00E·15 lE-17 5.65E-Ql 3.43E-14 2.00E-16 :£-17 4.29E-'JI
13·Ffb-89 1.67E_U 4E-17 3_34E.(II 5.54E-15 1.02E-16 IE-16 I.65E.OO 7.20E-15 1.40E-15 2E-;6 3.60E-ol 5.02E-14 2.10E-16 5E-11>1>.28=:.()1
15-1'Jlay-89 2.03E·14 lE-18 H16E-ol 7.05E-1S 2.00E-16 6E-17 2.3SE.OO 9.$6E·16 2.ooE-16 6E-18 4.78E-{l2 1.43E-14 I.00E-16 3E·I7 1.79E-Ol
14-A~'9-89 2.8IE·15 2E·18 5.62E{)2 3.76E-15 2.00E-16 SE-lS I.26E+oo 926E-15 3.ooE-16 8E-IS 4.63E-Ol 1.SOE-14 I.00E-16 4E-17 U18E.()I
13-Nov'89 538E'14 2E-17 1.03E..OO 8.0IE·IS 3.00E-16 3E-18 2.67E~OO 1.81E·14 3.ooE-16 7E-18 9.06E-Q1 4.09E-14 5.00E·16 2£-17 5.12E--ol12-!:'cb-90 448E-14 3E-lB 8.951:-01 1.48=-14 1.00£-15 6E-18 4.93E.00 1.28E-14 2.ooE-17 2E-17 6.~OE-Q1 3.8tlE-14 3.00E-16 5E-17 4.115E-ol
14--M~y-9Q 2.18E·14 1E-16 4.36E-OI 1.70:-14 1.00E-15 IE-16 5.67E.00 1.59E-14 1.00E-15 lE-16 7.95E-<ll 3.49E-14 1.001.,,1$2E·16 4.36E-Ol
13-Aug-90 9.53E-15 lE-15 1.91E-ol 1.70=:-14 1.0DE-15 lE-16 5.67E-t00 3_27E-15 1.10E-16 lE-16 1.64E-01 1.27E-14 2.00E-16 2:,16 1.59E-01
12-Ncv-90 1.11E·14 lE·16 2.22E-01·5.27E-15 3.00E-14 IE-16 1.76E.00 5_36E-15 3.00E-16 lE-16 2.69f.()1 1.56E-14 4-.00E-16 2';:-16 1.95E-olll_l"eb_91 635E·16 lE-16 1.27E--02 3.13E-16 6.00E-17 IE-16 I.C4E·OI 2.3IE-16 4,OOE-17 lE-16 1.16E.(I2 3.69E-14 I.00E-15 2e-16 4.a6E-ol
1Ht.ay-91 1.22E·15 IE·16 2.44E.o2 6.14E-15 3.00E-16 lE-16 2.05E+OO 4.41E·15 2.00E·16 lE-16 2.2IE-CI 2.50E-14 1.00[,1$2E-15 3.13E·Ol
12-Aug·91 7.8~E-16 IE·16 1.57E-02 1.43E-15 2.00E-16 lE·16 4_nE{}1 4.47E-16 1.10E·16 lE-16 2.24E.()2 '.64E-14 4.00E-16 2E-15 2.30E-Ol
11·N(rJ-91 t>37E·16 IE-Hi 1.07E-02 4.20E-16 7.0QE-17 2E-O 1.40E-ol 1.37E-16 3OOE-17 2E-17 6.85E-03 1.27E-14 3.00E-16 lE-16 1.59E-ol
10·l-'eb·92 3.5.:E-16 IE-16 7.08E-03 U8E-I6 5.00E-17 2E-11 J.93E·02 4.C8E-17 3_ooE-17 2E-17 2.04E-03 3.69E-l4 6.COE-W 1c.·16 4.61E-ol
11·llIay-92 4.7IE·16 lE·16 9,42E.o3 9.58E-16 I.00E·16 2E·19 3_1910·01 831£.17 400E-18 2E-19 4.16E.03 U3E·H 2.00E-lG IE-IO U9E·OI
10·Avg·92 5.32E·IS 2&18 1.06E.oI 3.36E-t6 6.00'-:'17 4E-1B 1.12E·Ol 1.6SE-16 7_ooE·17 2E-18 8.25E{l3 1.59E-14 2.00E-16 2E-\7 1.99E-01
~·Nov·92 3.6tiE-16 JE-21 7.32E-03 2.25E-t6 4.00:-17 41::-18 7.SOE{)2 I.OSE-16 3_00E·17 3E-18 5,4CE·OJ 2.24E-14 2.00E-16 2E·17 HOE-OI
9-Feb-S3 2.0SE-16 11:-22 4.10E-03 9.\4E-17 6.00i:-17 4E-18 3.05E-02 6.31E-17 5.ooE·11 3E·18 3.16E-03 3.41E-14 5.00E-16 2E-17 4.26E-ol
10·May·93 4_8(;E·16 3E·22 9.60E-03 3.25E-16 1,20::-16 4E-18 ,75E_Ol 126E-15 1.00E·16 31:-18 6.30E-02 I.83E-14 4.00£-16 2£-17 2.29E·01
lO-Au,,·93 8.3CE·16 2E-18 1.66E-02 I.90E-\6 7.00E·17 4E-la 6_33E{)2 2,IOE'16 9.00E·17 3E-16 1.05!:.Q2 1.70E-14 5.ooE·16 2E-17 2.13E-ol
8·1\:0\'·93 voe·IS 2E·18 5.40E-03 8.00E·17 8.00E·17 4E-1S 2.67E{)2 7.ooE·17 1.70E·16 3E-18 3.50E{)3 2.34E-14 3_00E-16 2E·17-2.S3E--<l17-Fcb·94 3.18E-16 2E-16 5.30E-QI O.ooE..oo S.!lOE-17 '1E·la Cl.OOE+OO 5_18E-15 2.801:'16 3E-18 5.76E{)2 3.64E-14 7.00E·16 2E·\7 6.07E+00
9-May·$4 1.BCE-15 2E-17 3.00E+OO 9.78E-16 2.00E-16 4E-17 3_26E..(0 1.10E--15 2.QC'E-16 3E·17 l.22E-OI 8.3OE-15 2.00E·16 2E·18 I.36E...OO
9·Aug-94 2.67£:-15 IE·16 4.45E.OO U1E-15 1.70E-16 IE·16 3.70E..CO 4.95E·16 3.87E-17 lE-16 5.50E-02 O.ooE.oo 2.19E-16 d,-16 O.ooF..OO
7-1';0\-94 9.2.IE-17 IE·16 1.54E-ol 1.59E-15 8.80E-17 IE-16 5.3CE..00 1.65E-15 5.7CE·17 lE-16 1.&1E--{)1 O.ooE-tOO 1.88E-15 IE·15 O.ooE.oo7-f'.cb·95 1.51E'15 \£·16 2.5~E·OO 9.5OE-16 9.29E-\6 IE'15 3.17E+OO !'1.70E-17 6.61;£·17 lE-16 I.03E.{J2 9.35E-15 4.00E-16 IE·15 155E.00
9-Uay·gs 2.21E-16 lE·16 368E·01 8.56E-16 5.41F._17 lE·16 2.85E+OO 3.05E·15 9.49E·17 lE·16 ~L40E{l1 4.34E-15 2.05E-16 IE·tS 7.23E·Ol
9--Aug-9S 1.56E·16 IE·16 277E-ol 1.67E-15 1.29E-;6 1E-1{i 5.57E+00 3.9)E-15 1.34E-16 lE-15 4.3]E·OI 5.60E-15 1.29E-16 210-15 9_33E.()1
IHkly-95 2.04E-14 lE·16 3,40E+OI 6.70E-15 2_32E-16 2E-16 2.23E.Ol 7.65E·15 124E-16 2E·15 6_5'JE·01 4.47E-15 2.25E-16 IE-15 1'.45E-015-Fcb-S6 4.50£·14 lC:·1G 7.50:::;.01 3.58E-14 9.47E·\7 lE·l{;1.19E.02 2.3:lE-t4 3.3BE-IS IE-IS 2.66£+00 7.3OE-15 3.87E-15 IE-16 1.22£..00
6N.ay·%1.76E-15 lE·16 2.93E.00 3_!i7E-15 l_B4E·t6 lE-16 1.19E.0I S.55E-I;2.54E·17 IE-16 1.Q.3({I1 7.54E·15 5.B3E-15 IE-16 1.26EoOO
5·A;Jg·95 2.37E-15 lE·16 3.95E.00 6.18E-15 4.6IE·'6 lE·16 273E+Ol 7,46E-16 5,12£-17 lE-16 8.29E-02 5.75E·15 3_04E_I6 IE-16 9.58E-01
5·Nov·95 3.53E-15 lE-16 5.BGE.OO 5.3IE-15 1.97E-16 lE-16 171E+Ol 9.39E-16 5.91E-17 IE-16 1.O-lE-oI 1.2IE-14 5.32E-16 lE-16 2.02E.00
6-Fcb-97 t.84E-16 lE·Hi 3.07E-ol 2.0IE-16 2.(;7E·17 lE-IS 6.70E·OI 1.87E-16 UllE-17 IE-16 2.05E-02 6.HE-15 2.92E-16 lE·16 1.02E.OO
S'May-97 5.75E-16 lE·16 9.5SE·OI 7,24E-16 6.~6E·17 lE-16 2~IE.OO 6.07E-I(;4.8SE-17 IE-l(j 6.7~E-02 4.75E-15 2.84E-16 IE-16 7.92E-Ql
II-Aug·97 1.21E-15 IE·16 2.02£.00 7.39E-16 5.50E·17 IE·16 2.46E.00 5.05E·16 4.WE·17 IE·16 5.6IE.{J2 ~.92E-15 2_80E-16 IE-16 £.20E-ol
5-Jan·98 9.89:-16 lE-16 1.65E~OO I.92E-15 NlA lE·16 640fA»6.2IE-16 NlA IE-16 6.90E.{J2 4.63E-15 NlA IE-16 7.&:1E.QI
26-Ap'-96 2.84E·15 lE-16 4.73E~OO 2.38E-15 OOE·17 1E·16 793E.O)1.72E·15 8.58E-17 IE·16 1.91E-ol 7.35E-15 3.47E-16 IE-16 1.23E+00
31-J\J1·93 7.49E-16 lE-1S 8.3'.f':.Ql 1.49E·I5 7.13E·17 1E·L6 4.911:.(»8,3.fE·16 5.97E·17 IE-16 9.27E-02 7.0lE-15 4.03£-16 lE-16 1.17E+00
28·Sep·S8 1.07E-15 1E·16 1.I9EoOO 9.2OE-16 5.66E-17 IE-16 3.07E+00 6.32E·16 4.91E-17 IE·16 7.03E.o2 395E_15 2.04E·16 IE-15 6.591:-(11
2E-Oec-SS a.S1E-15 lE·16 9.46E~OO 4.58E-15 1.14E-16 1E'16 153E.OI 4.58E·15 1.32E-16 IE·16 5.00E-01 1.43E-14 3.19E-16 IE-15 2.39E+OO
2$-Mar-93 :F5E-IS IE·16 4.1GE-16 2,45E'15 6.25E·17 lE-16 8.17E.00 2.39E-15 9.45:-17 IE·16 2.66E-01 8.46E-15 3.29E·16 IE-16 1.4IE+oo
;j·JJ1.gg 1.53E-15 lE_16 1.70::::+00 8.65E-16 M6E-17 lE-16 2.eEE-OO G.52E-16 4.61E-17 lE-16 7.24E{)2 7_20E-15 3.26E-16 1&-15 12{)E+OO
27·Sep·gg 5.83E-IS lE-16 6,48E-t00 3.52E·15 :'18E-16 1E·16 1.17E~OI 2.55E·15 a.95E·17 IE-16 28JE-ol 8.22E-15 3.16E:.16 IE-16 137E.00
28·0cc-99 9.~8E·15 lE·16 Ul5E..OI 6.2OE-15 I.96E-16 lE·16 2.07E.01 3.95E·15 1.15!::'16 IE-16 4AOE{}1 1.56E-15 3.12E·16 IE-16 1.26E.OO27-1',(3r--OO 2.06E-15 lE-16 2_29E+OO 1.27E-15 6.74E-17 lE-16 425E+OO 1_09E·15 5.86E-f7 IE-16 1.2IE.o1 7_72E-15 324E·16 IE-16 l.29E.OO
26-J_m-OJ 1.50E-15 lE-16 1.67E+OO 1.2·11:-15-6.61E·17 lE-16 4.13£.00 1,011;:'15 6.2.9E-17 IE·IS 1.l2E·Ol <\.35E·15 255E·16 IE·16 7.27E-OI
26-$cp·OO 1.04E-15 lE-16 l.ISE..OO 5.45E-16 6.15E-17 1E-16 1.82E~OO 601E·16 7.62E-17 IE·16 667E-02 7.67E-15 4.45E·16 IE·16 1_26E+00
26-Oec-OO 1.~8E-IS lE-tS I.64E+OO 7.56E-16 7.78E-17 1E-16 2.52E-tOO 68~E-16 7.78E·17 IE-16 7.60E-02 7.oJE·15 4.28E-15 IE-IS 1.17E.00
2&M,u-01 4.27~-16 lE-16 4.75E-Q1 2.19E-16 4.27E-17 lE-16 7.32E-01 1.89E-16 2.4-4E-17 IE·16 2,IOE.{J2 6.13E·15 7.50E-16 lE-16 1.02E..<02-Jvl-QI 4.52<:-16 lE-16 5.0::e-01 4.0210·16 S.SQE·17 1E-16 1,3.;E.<»<1.00E-ltl NlA 1E-lit <1.I1E-02 7.43E·15 2.57E-16 lE-16 1.25E+00
24·Sep·OI 4.65E-16 lE-16 5.1€E<l1 2.05E-16 I.44E·17 lE-16 6.BBE·OI 202£·16 3.75E·17 IE-16 2.42E-02 6.93E-15 1.59E·16 IE'IS 1.16E.00
31-Oe<::-o1 7.40E-16 lE-16 823E-Q1 3.5IE-16 3.84E-17 lE-16 1.17E.oo 3.64E·16 3.41E-17 IE-16 4.04E<l2 4.72E·t5 2.03E-16 lE·16 7_65E-()1
1·Apr.;:l2 1.26E-15 lE-16 1A0E+00 753E-16 6.07E-17 IE-16 2.51E.()<J 7.15E·16 5.52E·17 IE-16 7.95E.o2 9.65E-15 1.72E-15 IE·Hi l'£IE.OO
I·Jut·02 1.02£_15 1E-16 1.I4E.00 1.0JE-15 6.44E-17 IE-16 ,J.4<\E~OO 3.39E-16 3.295:-17 lE-16 3.ne-oZ 7.2OE-15 1.72E-16 1E-16 1.2<lE+OO
30-$ep--02 5.82E·16 lE-16 6.46E{}1 9.23E·16 5.73E-17 lE·16 3.051:_00 3.UE·16 1.58E.17 IE-16 3.<18E-02 4.48E·15 I.OOE·16 IE-16 7.47E-Ol
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3H/.ar-03 1.131;-15 lE-16 U6E+OO 7.41E-15 5.38E-17 iE·16 2.41E~00 4.4IE·16 2.76E·17 IE-16 4.9:E<l2 6.68E·15 1.34E·16 IE·16 1.IIE.oo
3Q.Jun·OJ 4.35E·16 lE-16 4.84£-01 5.03E-16 4.15E-17 IE·16 1.65E+00 251E'16 2_58E-17 IE-16 2_39E-{l2 1.34E·15 802E·11 lE·1S 2.23E-ol
29·Sep-03 1.51E-16 lE-16 1.67E..:Jl 1.02E-16 \.82E-17 IE-16 341£.01 d.OOE-16 OVA IE·16 <1.I1E·02 7.2aE-15 1.85E·16 \E'16 121E.00
29·0;x:.{J3 1.52E-:6 IE-IS 1.69E-'Jl 1.5~E-16 2.06E-17 1E-16 5,1~E·OI 1.51E·16 1.28E-17 IE-16 1_67£-02 7.02E-15 1_87E_16 IE·I6 11710.00
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27·Jun-04 L18E-16 1;::·16 1.31£-01 3.11£:-16 2.73E'-17 IE-16 1.04E.00 1,2~E'16 2.37E-17 1E·16 1.3SE-<l2 2.41E·15 1.%E·16 2E-15 4.11E-01
27·Sep{)4 1.16E-16 IE-16 1.28E.()1 1.72F.·16 2.12E-17 IE-I6 5.74E·Ol 1,I£E-I6 2.481:-17 IE-IG 1.3~E{)2 1_IOE'14 3.IOE·16 2E-I:)1.8JE.W
27·0ec-04 1.14E-16 lE-16 1.272-01 1.06E·16 1_69E-17 lE-16 3.5'E-01 d.ooE·16 NlA IE-16 <1.IIE·02 1.59E·14 2.IOE·16 2E·15 264E..o.)
28·Mar·05 <1.ooE-16 1E-16 d.llE{)l 2.04E·16 3.19E-17 1E·16 6.&E-ol 1.83E·16 3.03E·17 IE-I6 2.Q<\E-02 857E·15 1.~E·16 2E·15 lA3E.0029Jun-05 1.83E·16 lE'16 2.04E-01 a.8IE·16 3.59E-17 lc-16 1.27E.OO 3.DSE·16 3.J1E-j7 IE-16 3.4~E<l2 106E·14 1.82E·16 2E'15 1.7€E.00
26·5ep·05 2.87E-16 IE-16 3t9E-ol 821E.16 7.29E·17 1f.-t6 ::'.7"E,oo 3.7IE-14 UOE-15 1=:-16 4.13E.OO 6.2IiE·14 I.DeE-15 2E·15 l.o:E-OO
3-Jan-06 8.74E-16 lE-16 9.7IE-OI 3_79E·16 4.99E·11 1E·\6 1.26~.OO 1.31E-16 3.4IE-17 IE-16 1.4€E'{)2 432E-14 6.47E·16 EO 7.2£E·00
3·Apr-06 5.22E-16 1E-t6 5.80E-OI 6_66E·16 3.69E-11 lE-16 1.22E.00 1.11E-16 2.79E-17 IE·16 1.2.:E{l2 93~E·1S 2.4~E·I£2E·15 15€E..00
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31-Mat.Q9 4.13E-15 IE-16 4.59E..00 I.3SE·15 215E-IS IE-16 4.62E+00 1.41:-15 1.62E-16 lE-16 1.5EE-Ql 4.66E-15 1.62£·16 2E·15 7761:.01
3O-Jvn·09 2.3IE-16 IE-16 257E·Ol 7.79E·I€98IE·17 IE"16 2.60E.JO 6.37t:·16 2.12E-17 IE-16 7.08E-02 4.IBE-15 USE-16 ,E-15 6.6Se-01
Tab 5
f:
1.00E-11
1.00E-12
1.00E-13
(j)1.00E-14
'iiuUJ
Clo~1.00E-15
1.00E-16
1.00E-17
BHV-5 Radionuclide Concentrations (uCi/ml)
.....'\........,71....•..
II ~-....../~+:/VI \\..lolT/~1\~\....
~,...~~'1 ~\rA~~~..-lJ •1\;.\N ~
lr 1*~..•n
r~\~•V ~J.I +..1\~-•~t j.......\.t.•'If r~'It
/..IVV\r l..f .1\.\!\...,'.T \"II 7'.i,\N 1/VV ~A +\/'V ••1\\J V ~L.L1:4 1
-\I ..,..~...I \~r v
~••
1.00E-18
"«'0e:,ej'(<"'o5O":Je:,0'C
<"'o5O<::Je:,0'C
<"'050'\e:,0 'C
<"'0500:>e:,0'C
<"'of?!"e:,0'C
«0:>":Je:,0'C
<"'of?!<::Je:,0'C
«0:>'\e:,0'C
«0:>0:>e:,0'C
<"'o):j"e:,0'C
«~":Je:,0'C
«~<::Je:,0'C
«~'\e:,0'C
I-+-Series1 -+-Series2 -.-Series3 -+-serieS41
1.00E-11
Effluent Concentration Limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit =5E-12uCi/ml
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
BHV-5 Uranium Natural Concentrations (uCi/ml)
1.00E-12
1.00E-13
-;-1.00E-14
CiiCJen
eno
d1.00E-15
1.00E-16
1.00E-17
..
1\Jo..n ,V~\..r
••4 ~•I ,.....)II ,~lI'\~
~~•T •..J,~~~~~t
~v.••\I ,r
~V ..........l
1.00E-18
'0"'01.-'O"':J ~'Ofo 'Or"o ~'0'0 'OOJ Q)C)Q)"Q)1.-Q)"':J ~Q)fo Q)r"o ~Q)'O Q)OJ ~C)~"~1.-~"':J ~~fo ~r"o ~~'O~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1.00E-11
Effluent Concentration Limit =2E-14 uCi/ml
ALARA Goal =5E-13 uCi/ml
Pre 1994 MPC Limit =8E-14uCi/ml
Pre 1994 ALARA Goal =2E-14 uCi/ml
BHV-5 Thorium-230 Concentrations (mCi/ml)
1.00E-12
1.00E-13
Qj'1.00E-14
iii(,)en
C)o
d.1.00E-15
1.00E-16
1.00E-17
•I 1
1\
I \
• •I'\n J VV'\I \
,I\.• I \
V \/V V V \.&f\J IV ..1\I-,II \.A..I Vr..'V
1.00E-18
q;,"q;,'),q;,~~q;,~q;,10 ~q;,'O q;,OJ 9'>9"9'),9~9b<9~910 ~9'0 90J ~§~~"~'),~~~~~~IO ~~'O~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1.00E-11
Effluent Concentration Limit =9E-13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
BHV-5 Radium-226 Concentrations (ucVml)
1.00E-12
1.00E-13
Cil1.00E-14
(ij
(,)
UJ
C)o
:'1.00E-15
1.00E-16
1.00E-17
\
~
~.M I
TIl l'~.&.,>F 1\7f
I I ~••~
~J I V ...~\l.I ~
II Y'•\.1.U \j •I ...
V ~,....\....V ~W 1
1.00E-18
co"co""coO:>cob<co<-:>cofe ~COCO coOJ O;)~0;)"0;)""0;)0:>~0;)<-:>O;)fe ~O;)CO O;)OJ ~~~"~""~O:>~~<-:>~fe r;S-~co~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1.00E-11
Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA Goal =1E-12 uCi/ml
BHV-5 Lead-210 Concentrations (uCi/ml)
1.00E-12
1.00E-13
Ci)1.00E-14
ftiuen
C)o
;:!.1.00E-15
1.00E-16
1.00E-17
,
\
....r ..1\'lI'•..
""'I ~.....~"'f,./....\I \I'1\Ii \•\
~...~'I'•....~~~•~1\;.,iIY ~~
•
1.00E-18
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LCCA1ICN 811\.'-5
---~-THORIUM·230 RAOIUI.1-22(.._...~UA~N:UI,l NAT LEAD ·210
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03,,14 lE·l1>4.O(IE·OI 705E·j5 2.00£\6 6£·17 235£,00 9.56E-16 :C>.OOE·16 6S'18 >1.78E·02 143£·14 lODEHi 3(·17 l.1;1£-OI
81E·15 2E·18 5.62E-02 3.78£·15 2.ooE-·'6 8E·18 I26EtOO S.205E-15 3.00E·16 8E·18 4.63E·OI 1_5:lE-14 100E·16 4[·17 1.8SE-01
38-:·14 2E·17 1.08£.00 8_011"·15 3.00E-i6 3E·18 267E.00 1.81£·14 3.00E·16 7[.18 9.06E·OI 4.09E-14 500E·16 2E·17 5.12E·01
.4BE-14 3E·18 896E·Ol ;.48E·14 l.ooE·15 6E·18 493E.00 1.28E-14 2,00£-17 2(·17 6.40E·OI 3,001"-14 300E·16 5E-17 ~.85E.-{)1
10,,·14 1[;'16 4.36E·Ol 1.70(·1"1 1001"-15 :£·16 567bOO t.5';lE-14 1.00E:'15 :£·16 7.~5E·OI 34~E'I~1-00E·15 2E·16 -4.35E-OI
.53:'-15 1£·16 1,91E-OI l.i'OE·H l.ooE·15 lE-16 567£.00 3.27E·15 UOE·16 IE·16 1.64E·OI 1,27E-14 20(1E-16 2E·16 1.59E-01
11t'·14 IE·l6 222E{)1 5.27F.·15 3.ooE-14 IE-16 1761::.00 5.38E-15 300E-16 lE·16 2.69£·01 155(·14 4.00£-16 2(·15 1.95E-01
3SE·lt>IE·16 127E·02 3,13E·16 6.ooE-17 IE·16 1.04(·01 2.31E·15 400(·17 IE·16 1.I6E·02 3ag!:.·l.!100£·15 2(·16 4.85E·OI
?:?E-It,IE·I(;24~E·02 6.101(-15 a.OOE·ll'IE'IG 205r:~OO 4.4lE-l!;2.00c-1G 1(·16 221[·01 V])[-14 100[·1$2(,·1$3.13[-01
e~::·16 lE'16 157E-02 1.43E-15 2.00£-16 IE·16 4.77["·01 HIE-16 l.lQ[-16 IE·16 2.24E·02 I.84E·14 4001",16 2E·15 2.30E·Ol
37:'·16 lE·16 107E{)l UCE·16 7.00E-17 2E·17 1.40(·01 1.37E·15 3.00[,17 2E·J7 6.85E·03 127E-14 300(·16 IE·15 1.5gE·Ol
54:'·16 IE·16 708E03 1.18£-16 5.00E-17 2E·\!3.93E'-{)2 4.(l.3E-17 3.0OC-17 2(·17 2.04E·03 3.69E-r4 600E·11 1(·16 4.61(-01
711:·16 IE·16 942E·03 9.56E·16 1.00£-16 2E·19 3.19[·01 e.3IE-17 4_00£-10 2[·19 4.16E-03 1.43(-14 200[·16 IE·\e 1.79E·Ol
J2f:-rs 2E·18 I06E{l1 3_36(·16 6.001"-17 4E·18 1.12E·OI 1.65(·15 7.00E.·\7 2E·18 8,25£·03 1.59[-14 2,00£'16 2E·17 1.9~E·OI
66E·16 3E-21 732E03 2.2SF.·16 4.00E·17 ~E·16 7_50E·02 1.03E·15 3.oOC-17 3E·18 5AOE·03 2.24(-14 200E·16 2E-\7 2.80E·OI
OSF.·16 IE·22 410E03 9.14E·17 8.{)OE·17 4E·18 3.0££·02 6.3IE·17 5.00E·11 3E·18 3.16E·03 3.011[-14 50{1E·16 2E-17 4.26E--QI
60E·16 3E'22 960E-O.l 3.25f.·IG 1.20£-15 ~E·I{I 2.75E·Or (.25E·15 1.QOC-16 3(·18 6.30E·02 I.83E·14 4.ooE·16 2E·11 2.2~E-OI
3nF.If>?1"·lfl 1/lIiFM 1901"·16 700F-17 4F·UI fi:nF·m ?lnE·lfi 90Cf-17 .lE·11I 1.0~E·f12 t7nr,·M SOOF·J{i '1".17 ~13F·OI
JOE-Hi 2E·18 SAOE·OJ 8.00E·17 s.oOE·17 4£·18 2_67E·02 7.0-JE-17 l.lCE-16 3E.·18 35()E·OJ 2.3-IE.-14 3001"·16 2E·17 2.93E·Ol
18E·16 2E·16 530E·0'O.OOE~OO 5.90E-17 ~E·18 000[.00 5.19E-15 280E·16 3E·18 5.76[·02 3.&H'-14 7ooE·16 2[·17 &07E.CO
80E'15 2E-17 3.OCE~OO 9.78E-·16 2.00E-16 4E·17 326£.00 1.10E·15 200E·16 :11'.-17 1.22£·01 8.30£·15 2ooE·16 2E-lG 1.38E.CO
G7E·15 !f'.IS 4.4fE_OO l.11£.15 170E·II:;IE·16 370E.00 -4_95~·lG 3.87E·17 lE·I(i.55'OE-02 oOO[~«J 219E·16 lE'-16 O,OOE.CO
21£-17 H::-1S 154E·01 1.59E-15 8.80E-17 IE-IE 530E.00 1.65£·15 5.70E·17 IE·16 1.84E·OI O.OO!:~OO 188E·15 IE-IS O.ooE+CO
51£-15 1[-16 25~E-OO 9.5OE·16 :1.29E·16 IE-16 3.17E.00 9.7,)£-17 6.66E-17 IE-16 1.03£-02 9.35£-15 400E·16 IE-IS 1.56E.<:O
21E·16 U::·16 368£·01 8.56E·16 5.41(;·17 lE-16 2,85E.00-3_OilE-15 9A9E·17 IE·16 JAOE·Ol 4.3·11:-15 205E·16 lE·I!)1.23E·Ol
ME·16 1£-16 277E.·01 1.67E·15 1.29£·16 IE·IS 557E.00 3.9)1:_15 1.34E·16 IE·16 .\.33EAll 5.60£-15 129£·1(;2£·15 9.3~f{)1
04E-14 lE·16 3.-4(;£·01 6.70£-15 2.32£-16 2[·16 223E.Ol 7.65E-15 1.24[·16 2E·16 8.50E·OI <:,47E-15 225E·16 lE·15 7.'15E..()1
5OE-14 1[-t6 15C£001 3.58£-1<1 90471"-17 IE·16 119E.02 2.3:1[;-14 33eE·1E IE·16 266£.00 7.3OE-15 387E·16 11"·16 1.22E+<:0
.7fit.-15 11:;·16 2.9::1:-00 3.57E·15 28-41:-16 II:·Hi 1.191:;~Ul i'.55l:-1!i £.541:·11 11:;·lb UJ!>tAJl 7.54t·15 5831:.·16 11:-16 1.261O.L-O
.37E-15 1£·16 3.9~E.OO 11.18£·15 4_61£_16 1£.16 273E.OI lo4SE-16 5.12E·17 IE·16 8.2~E_02 5.75E-15 30~E·16 IE·1S 9.5'31::.(l1
.53E-15 IE·\6 5.eeE-OO 5.31E-15 1.97£-16 IE·16 I.77E.OI 9.3:)E-15 5.9IE-17 lE·16 1.04(.-{)1 1.21E-l<1 532£·tS IE·16 2.(}2E~C-o
84E-16 IE·16 301E·OI 2.0IE-16 2.87E-17 IE·16 670E·Ot 1.87E-16 1.8IE·17 IE·16 2.031:·02 6.14E·15 292[·16 (E·16 1.02E+<:O
.75E-16 IE·16 958E{l1 724E-16 6.36E·17 1[-16 241E.00 6.0lE-15 4..8!:E·17 IE·Hi 6.141:-02 ~.75E·15 284£·16 lE·15 i92E-01
.2IE-15 lE·16 2.021::,00 7,39£'(6 550E·17 1£·Ii;2.46Ed)o 5.05E-16 4,3C£-17 IE·I£5.61£·02 4.92E-15 2.HOE·IG \£·16 8.20£01
89£-16 IE·16 1.65E·00 1-92E-15 N'A 1£·16 6..\OE"00 6.21E-16 NI'IE·16 6.90E'-{)2 4.68E·15 NJA 11"·16 7.80E·Ol
84E-15 lE·16 4.nE~00 238E·15 7.70E·17 IE-16 793E,00 1.72E·15 8.5eE·17 IE·16 1.91E-ol 7.35E·15 3A7E'16 lE·16 1.23E_M
.49£·16 lE·16 8,32E·Ol I.49E-15 7.13£-17 lE-16 497£+00 6.34E-16 5.971;;·11 IE·16 9.27E·02 7.0IE-15 403E·16 lE·16 I.17E+CO
_071::·15 IE1S 1.19E_00 9.20£:·\5 5.66E-17 IE-16 ~.07E.OO 6.32£-16 .\.91[,17 IE-16 7.03E-02 3.95E-15 2,04E·16 IE·16 6.59E-Ol
.51[-15 lE·16 9.46E~(}J ~58E·1S 1.l4E-15 IE·16 1.53E.01 -4.58E·15 1.32E·l£IE-16 5.08E-01 I.43E·14 319E-16 IE·15 2.39E+W
.75E-15 lE·16 4.16E·16 2.45E·15 8,25E·17 IE-16 8.17£.00 2.39E·15 9.45E·17 IE-16 2.6SE·Ol 8.-46E·15 3.29£·16 11:.15 141E+CoO
53£-15 IE·16 1.70E;00 8_li5E·1S 4.46£·17 IE-Hi 2.88E.00 6.52£·15 4.61E·17 IE-16 7.24E-02 7.20E·15 326E·16 IE·15 12OE+00
.83(':'15 1(·16 6.4£;E,00 3.52"·1!)1.\61"-16 IE·16 1.17(;.01 2.5!)[-1:;8.951:'17 IC-16 283[-{)1 1l.22E·15 31(,E-16 !l,16 137E+00
.48E·I$lE·18 1.05E.OI 6.2{lE·15 I.96E-16 IE·t6 2_mE~OI 3.96E-15 U5E·l!'IE-16 4.40E·OI 7_~6E·15 312E·16 lE·16 1.26E+00
.Q6E·15 IE·16 2.29EfOO 1.27E·15 6.74E-17 1E-16 4.?5£.OO I.09E·15 5.86E·17 IE-16 1.21E{)1 ·'.:i2E-15 3,24E·16 1£·16 129E+00
5OE·15 IE·16 1.61E~(}J 1.2"£·15 6.61E-17 IE·16 4.13E.00 I.OIE·15 6_2$£-17 IE-16 1.12£-01 4.~6E·IS 2.55E·16 lE·16 7.27E·01
.0~E-15 IE·16 1.15E.00 5.45E-16 5.15£·17 IE-16 1.82E".OO 6.01E-I6 7.6:<£-0 1(·16 6.67E-02 7.67E·15 4.45£·16 1E·16 1.23E+00
48E·15 IE·16 1.64E.00 7.5EE-t6 7.76E-17 IE·16 2.52E,00 6.84E·16 7.78£·17 IE·16 7.60£·02 7.00£·15 <lnE·16 lE-16 1.17£+00
.27E·16 IE·16 4.75E·01 2.19E-16 4.27E-17 IE·16 7.32£·01 1.69E·16 2.44E·I?IE-16 2.10£·02 6.13£-15 7.5!lE-15 IE·16 ·.02E+oo
52£·16 IE·16 5,02E.-{)1 4,02E-16 S.90E-17 IE·16 1.34£:.00 <;\.OOE·16 NlA lE·16 <;\.IIE-02 7.(8E·15 2.57E-15 lE-16 .25E.oo
6~E·16 IE·16 ~,16E·Ol 2.05E-16 I.HE-17 lE-16 6.88E·Ol 2.(12£·16 375E·\7 IE·16 l.42E·02 6.£>BE·j5 1.59£-16 IE-16 -16(_00
4f;F·16 IF_It>E;>3E·OI 351[:-16 3.B4£-17 110-16 117E.00 3f..lF-16 34\F.1'IF-1t>~041'-02 -47210-15 2(l3E-':;i 1(-16 11l6E·Ol
1.26£-15 IE·16 1.40E.00 7.53E-16 6.07£-17 IE·16 2.51E.{)O 7.19e-·16 5,52£·(7 IE·16 7.99E-02 9.65E·15 I.72E·15 IE-16 61E.OO
1.02£.·15 IE·16 1.14E.00 1.03E-15 5.44£-17 IE-16 ~,.'14EtlXl 3.;;'9E·16 3,29E·l?IE-16 ~.77E·02 7.20£-15 1.72E-15 lE'16 20£.00
.32E·16 lE·16 t.45(·01 9.28E-16 5.73E-17 IE-16 :;.O~E.OO 3.14E·16 1,58E·17 lE-16 3.48E-02 4_~8E·1S 1.00E-15 IE-16 1.4/E{l1
I.OOE-16 H~-IS d.I1(·Ol 7.67E.16 5.00E-17 IE-16 2.5510.00 1>l8E-16 4.03[·17 1£:-16 ~.26E-02 9.~6£·15 1.63E·1\"IE-16 159F..+OO
1.13E·15 IE-15 (26E.00 7AIE-16 5.38E·17 IE'16 2.471".00 4.41£-16 276£·\7 IE-16 4.9IE·02 668f.tS 1.3~E·15 IE·16 1.IIE_OO
.35£'16 lE-15 4.84E·OI 5_08E·16 4.15E·17 lE·16 1.63E_00 2~1f.16 2,58E·!?IE-Hi 2.39E·02 t.:!4E-15 e.02E·17 lE-16 2.23E·01
1.511:-16 lE·ll;1.61E·Ol 1.02E·16 l.B2E·17 lE·16 3.4IE·OI <l.[I(}E.16 NI'.1t:·16 <\.11£-02 7.28H~1.85E-15 IE-IS 1,21£.00
1.52E·l(;IE-It,1.69E·OI 1.5-1E·16 2.081:·17 IE-16 5.13E·Ol l.5IE·16 128£·1]11;>16 ;.67E·02 7.02£·15 1.87£·15 1£-16 I.HE.OO
1.00E-15 IE·16 d.llE-OI \'12E·16 2.18£·17 IE-15 3.73£·01 <1.I){)E·16 N!A IE-16 <11IE·02 8,82E·15 2.31E·15 21"-15 IA7E~OO
1.18E·16 IE·16 1.3IE-01 3.\1E·16 2.7SE·17 IE·16 1.0~E.00 125[·16 2,37E·17 IE·16 1.39E-<)2 2,~7E·15 1.93E·I;;2E·15 4.IIE-OI
1.16E·16 IE-IG 1.25(;·01 1.72E-16 2.12E-17 IE·IIi 5.74E·CI 1.18E·16 2",aE-I?IE-16 1.32(·02 1.10E·14 ~.lOE·15 2E·15 ;_83E+OO
1.14E16 IE·It>1.27[,01 1.06£16 1.69E·17 1£·15 3.52£-01 ...1.00£16 NlA 1£·16 ,,1.11[,02 1.59E-14 ;:.IOE-15 2[·15 ....6"E~00
1.00E-16 IE-16 <1.11[·01 2.04E-16 3.1SE·17 lE·15 6.80E-01 1.63[·16 303[·17 IE·16 2.041"·02 8571"-15 1.6~E·15 2E-15 1.431".00
1.83E·16 IE·15 2,04E·OI 3.81[-16 35*-1/IE·1S 1.27[.00 :'U·gE-16 3.31E·!?IE-IE 3.-43F-02 I.Q6E-j4 1.82[-15 2[-15 1.76£+00
2.81E·16 IE·16 21gE·01 B.21E-16 7.29£-17 Ic·16 2.74E.00 3.7IE-l<1 4.30E·15 IE·16 4.13E.(j0 628£-14 LoaE·1S 2(;-15 1.05E.OO
.74(·11;IE-IC>9.71E·Ol 3.79£-16 4.99£-17 lE·IS 1.25E,00 1.;:'1[-1(;3.'11(~·P 1[·16 '.46E-02 432E-\4 (:.47E-15 EO 7.20ETOO
.22[·16 IE-16 5,8,JE-OI 6.66E·16 3.B9E·17 IE·1S 1.2ZE~0!l l,lIE·16 ?79E·ll IE·16 1.2"1[·02 9.34['15 ~A2E·15 2[-15 :.56E...00
.O~E·16 IE-16 ;!'-43E-Ol 1.I0E·16 2.01E-17 IE·I$.l.68E·CI <I.00E·16 NiP..~-IE·16 <;1.111"·02 1.25E-14 4.4aE·15 2E·15 2.08E.00
9.I.\E·16 IE-Hi 1.02<:,00 ~.~5E·16 8.20E·17 IF·16 1.65E.{I!}1,86E·16 ~-4~49T'i7 IE-16 2.07E·02 1,67[·14 527E·16 2E·'5 2.78E~OO
PERIOD GR
ENDING CO
J-Apf-05
3'vul·05
02·QcI·C-6·"
2S·Sep-81
14·0ec-81
29·Ma'·82
:l0·,Aw·B2 3
27·Sep·82 1
3-Jan·83 I
4/1prS3 Los
30·,).Jr,-BJ 7
3.Qct·83 4
3·Jall-8f 6
2·Apr·ll~
2·JJI·64
I-OCI·84
2-J,ln·85
I-ApI·85
1-.Jul·8E
30-Sep·e5
2-Jan·86
1·Apr·86
30-Jun-B6
27·Qc;·B6
15·0cc·86
l{.·Mar-U
11·May·a1
9-Sflp·g7
2·Nov-87
16-f€tl-€8
18-May-8B
15-Au~-88
1~-Nove8
13-feb-59
15·M<I)'89
14-Aug-69
13-NoV"f.9
12·Feb·90
14·M"r90
13·AlIQ-90
12·f'lo"l-M
11·feb·91
IJ·/.Iilr'Jl
12-AuQ·91
Il·No,·91
10·Feb·92
11-1\1<1(,9::-
10-Aug-S;>
9-Nov-92
9·Feb·93
10·rt,ily·93
10·Aug-S.'
8·NoII·93
7Feb-94
9·r.....aj;·~
9·AuO·94
7·Nov·94
7·Feb·95
9-May·95
9·AuS·95
11·t:ov-95
5·Feb·9S
fJ·Ma~'·!lG
5-Aug-96
6·1\'1:11/·93
6-feb·97
5·May·97
II-Avg·97
~·J~Il·SS
28-Apr-£B
31-)01·98
28-Sep-S8
28·Dec·98
2HAaI·99
.l·Jul·99
27-Sep·99
28·Dec·99
27·Mar·QO
2;j·Jun-({l
26'$ep'OO
26-Dec·00
<.'{i·Mal·Ol
2·JuI-QI
2~·Sep·01
31-0ec-Ol
I·Apr·02
hul·02
3O-Sep·02
30-0,,":-02
31·Mar·03
;)o)·Jun·03
29·5ef)·OJ
29·De<:{l3
29·tf,ar{)4
27·Ju[l·C4
27·Sep-04
27·0ccO~
28·/,l~I·05
29·JulI-{lS
28,SCII·05
;;·Ja<l-l}J
?-/lp(·m
2<ul·07
30·Sep·07
31-0e-:·07
3\·t.lar·OS
3(J·Jul1.(<8
30·Sep·OB
31·0e.:·{lS
31 Mar09
;H·Ju[l·(·g
9A9E·115 lE·If}1.05~.OO 681£-16 1.0ZE·I6 IE·I!>2,27E.OO 2.(12£·16 5.73[.17.IE-16 2.24£·02 1.31£-14 210-15 2.18E.00
1l)8F1S IF·1S UOE->CO 822E-16 4.74E·17 110·11}",7~f.OO ??h~11';?89~·17 IF_16 ?51£·02 16<1E_14 2.27E·16 2£.15 2.70£..00
1.5<:E-15 IE.rS 1.72E.(:{}8_16E-16 1.23E-16 IE-16 2_72£;00 4.76E·16 1.26E·16 IE-16 5.3IE·02 2.12f:-14 7.3-5E-16 2£·15 3.53£.00
4.9GE·16 IE·15 5.44E·OI 2_37E·16 4.2OC·17 lE-16 U9E·Ol <IE·16 I>A IE-16 <1.111"·02 G.65F.·15 V3E-16 2E·15 Lli
1.46E·l~IE-lIi '62 ~.6/E·16 1.28E-11 IE·16 1.lJ<J <IE·16 I>A IE·li)<1.11E-02'1.02E·14 211lE-16 21:·15 OJ
3,1610·16 IE.16 ~.5IE-01 6.I7E·16 4.26E·ll IE-IS 2.06£.00 3;'1\:'·\6 3.67£·17 IE·15 ~.1l£·02 4.82£-;5 1.75[-16 2£-15 6.03E·OI
3.13E'15 IE·lli 3.48E.CO 1.55E·15 2.30(-16 IE·15 5.15£+00 9,27£-16 4.2.0E·17 1(·16 1.03[-01 7.40E·IS 2..73E-16 2E·15 1.23E.00
7.08E·15 lE·16 785 3.-'lIE-\5 1.98[:-17 lE·16 1.l4E-Cl 252(-\5 8.\)EP IE-16 2_80£·01 1.15E·14 2',55E·15 2E-15 1.92
7.22E·15 IE'16 Il02E.CO 2.82E·15 ~.I?f·1G IE-II}9.<11 3.03£'15 1<:7E·I?1£-16 .l.37E·OI I59E·14 294E·15 2E·15 2.65
4.13£15 IEI6 45!lE.CO 1.3'JE·15 ::.15£16 11:·1':>~62E.00 l.~If 10,1101&IS6EQI 4,66E\5 1621;·16 7_76£·01
2.31E-16 IE-16 2.57E·OI 7.?9E-16 9_81E-II lE·16 .2.6JE+00 6.:'7['16 2.12E-I:IE-16 ;,08E·02 ~.18E·15 1.35£:-16 2E·15 6.69E·01
Tab 6
~I"',..~
j ~v ~
~1/
~I)
I'.r-.~~~IJ
I~
j)l ~
~,~
l.,J..A
~F::-7
1\.1\-..........
~":::::~
1\KIt
~
~
41..
1.1 ~
~~[)
1\f
~~
~........
~~~~~r-..
,...C\J C')'<t l{')CD ,....co,...,...,...,...,...,...,...,...
I I I I I ,I IUJUJUJUJUJUJUJUJ00000000qqqqqqqq,...,...,...,...,...,...,...
(als:>s 601)
6)V~~
6'0."1-'v.~19-V'o:,~
<90.IS'~
<90."1-'v.~
<0'0:,
~
<0.IS'~
<0."1-V.~&~'o:,
'<t~
-90.IS'I/)Q)
~.~
-90."1-(f)
'v.t~-QV'o:,C')~I/)
$10.IS'Q)
~°ai
(f)
$10.~t'v.~AV,Of,C\lI/)~Q)i!-o.IS'.~
~(f)
.60."1-t'v.~eJ u;0'0:,Q)~'C;C'o.IS'Q)
~(f)
C'o "1-t'Go:~~0'0:,~cb.1S'~cb."1-'v.~,(0'0:,~
"0.IS'~
"0.~'v.~a~'o:,~
00.IS'~
00."1-V.~6)~'o:,
CilI5'
1.00E-11
Effluent Concentration Limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit =5E-12uCi/ml
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
BHV-6 Uranium Natural Concentrations (uCilml)
1.00E-12
1.00E-13
(j)1.00E-14
iij
to)en
Clod 1.00E-15
1.00E-16
1.00E-17
0//"-\1't /~
\..../ \r \
\/\./\...-~~•
1.00E-18
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~##~##~##~##~##~##~##~##~##~##
Effluent Concentration Limit =2E-14 uCi/ml
ALARA Goal =5E-13 uCi/ml
Pre 1994 MPC Limit =8E-14uCi/ml
Pre 1994 ALARA Goal =2E-14 uCi/ml
BHV-6 Thorium-230 Concentrations (uCi/ml)
1.00E-11
1.00E-12
1.00E-13
Q)"1.00E-14
iiiCJen
C)o
::::!-1.00E-15
1.00E-16
1.00E-17
1.00E-18
B ~~~~~~~~~~~~~-~~~~~~~~~~~~~~B B~~~~~~~~~~~~~~~.~~~~~~~~~~~~~~~#~##~##~##~##~##~##~~#~##~##~#
1.00E-11
Effluent Concentration Limit =9E-13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
BHV-6 Radium-226 Concentrations
1.00E-12
1.00E-13
'G)1.00E-14
'iiuen
C)o
:"1.00E-15
1.00E-16
1.00E-17
"
9
1\
A /\....-...
~'\•....'\
\.I \F\/"\
'\./'-./........../\~......,.AJ V
..
1.00E-18
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#~##~##~##~##~##~##~##~##~##~#
Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCilml
Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA Goal =1E-12 uCi/ml
BHV-6 Lead-210 Concentrations (uCi/ml)
1.00E-11
/\
A ~./~..~\~
}o£•v.
,,,
1.00E-12
1.00E-13
1.00E-16
1.00E-17
1.00E-18
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~##############################
Qj'1.00E-14
'ii(,)
(/)
Clo
::::!..1.00E-15
LOCATION BHV.£
URP.NiUIANAT Tf·CRIUM·no RADIUM.226 LEAD ·210
PERIOD GROSS LLO %GROSS COUNTING ILO %GROSS COUNTING LLD ~;GROSS COUNTING LLD ~.
ENDING cotK:."CVcc (IE·16)f.!PC CO~.~CVcc ERROR [1E-16)r.1PG CON:;.j.JCtfcc l:RROR (lE-16)fAPe COr«;.j.JC~'cc ERROR (IE-I6)MPC
27-Sep-99 3.03E-15 IE·1/';3..36E..00 1.31E·15 6,981.'-17 IE·15 4.57E..OO 8.72E·16 5.23E·17 1E·16 9.69E·02 7.55E-15 3.05E-16 lE-16 1.26E..00
28·Dec-99 5.01E-15 ·,E·ll'5.56E..00 2.89E·15 125E-16 lE-io 9.63E+C<l 1.31E·15 6.5-3E-17 lE·16 1.46E{)i 8.10::-15 3.17E-16 lE'16 1.35E..00
3O·Mar·OQ 7.46E·16 iE·16 8.29 E-Ol 5.25E-15 5.04E·17 lE-i5 1.75E+CO 3.ooE·15 1.66E·17 lE-15 3.33E--02 7.83::-15 3.16E-16 lE'16 1.30E+00
2G·Jvn·OO 5AOE'16 IEd6 6.00E·OI 3.53E-1(J ).62E-1:1 IE-16 1.18E+CO 6.11E·16 5.34E·17 lE·16 6.19E--Q2 4.83E-15 2.93E-16 lE'16 8.05E.{JI
25·Sep·{jQ 3.75E·16 IE-15 4.17E·OI 2.23E-16 4.23E-17 lE-16 7.'11E-01 1.91E-16 2.86E-17 lE-16 2.121."02 6A1E-15 4.6IE-16 IE-16 1.02E..00
26·Dec·00 5.21E·15 lE·16 5.79E·Ol U9E-16 5.04E-17 lE-16 1.13E..00 3.28E·17 2.80E·17 lE-16 3_G~E·02 8.57E-15 4.70E-16 lE-16 1,43E..OO
26-Mflf-OI 1.42E·16 lE-16 I.S8E·Ol <l.ocE·16 NA 1E·16 <3.33E-Ol <I.ooE-16 NA lE-15 <I.11E.(}2 6.15E·15 7.ooE-16 lE-16 1.03E..00
2-JuI--Ql 1.81E·16 lE-16 201E·Ol 1.66E-16 3.59E-17 1E·16 5.52E-ol <l.ooE-16 NlA lE-16 <1.11::·02 6.95E-15 2.57E-16 lE-16 1.16E+00
24-Sep.(l1 3.0SE-16 IE·16 J.42E.Q:1.01E-16 1.0IE-17 lE·16 3.37E-ol I.nE-16 3.03E-17 lE-16 I.S7E-Q2:B.5SE-15 1.72E-16 lE-16 1.<;3E..OO
31-Dec.{Jl 3.31E-16 lE·16 368E-OI 1.25E-16 2.72E-17 lE-16 4.15E-ol I.C9E-16 1,OOE·17 If-16 1.21E-<i2 3.'4E-15 1.85E-16 lE_16 5.24E_01
l-Ap/{)2 4.77E-16 IE·t6 5.3IE·OI 2.94E-16 4.10:-17 lE-16 9.82E-01 1.$6E-16 1.61E·17 lE-t6 2.18E·02 8.61E-15 1.70E-16 IE-16 1.43E..00
1-.AJHl2 3.6BE-16 IE·16 4.09E-ol 4.41E-16 4.15E-17 lE·16 1.47E+00 1.76E-16 1,29E·17 lE-If;1.96E-Q2.820E-15 I.WE-16 lE-16 1.37E..00
3O.Scp{)2 3.67£':·16 IE·16 4.0EE-01 5.60E·16 4,44:-17 lE-16 1.67E~00 1.00E-16 1,29E·1i'lE-16 2.ooE-oZ 555E-15 I.lOE-16 lE-16 9.26E·01
30·0e<:-D2 <:1.00&\6 IE·16 <1.11E-0\3.43E-16 3.47E-17 lE·15 1.11E..oo 1.67E-16 T.5JE-17 lE·16 I.85E-02 1.35£-14 1.891'-16 lE·16 2.24£..00
31-Ma/{l3 1.98E-15 lE-16 22<lE-ol 1.66E-16 2.66E-17 IE-16 5.6\E·OI <1.00E-16 NlA lE-16 <1.1IE-02 7.nE-15 1..0:8£-16 lE-16 1.29E+oo
JO·Jun{)3 1.I8E-16 1E-16 1.32E-01 1.15E-16 1.96E-17 IE-H;3.83Hll <1.00:;-16 NlA lE-16 <;U1E{l2 5.92E-15 1.34E-16 1E·16 9.87E--ol
29-S(!p·03 <1.00E·IS 1E·16 ·d.l1E-Ol <:1.00E-16 NlA IE-16 <l.llE-Q2 <1.00E-16 NIt<.1E-16 <1.11E-02 8.30E-15 I.S5E-16 lE-16 t..38E+00
29-0cc.(l3 d.OOE·16 IE·16 <1.11E-Ol 1.36E-16 1.86E-17 IE-15 4.5E.()1 <1.00£-16 NlA lE·16 ..,1.IIE.{)2 6.66E-15 l.121:·16 110·16 1.11E..00
29-Mar.()4 d.ooE-16 lE-16 <1.11E-Ol <1.00E-16 NlA IE·16 <3.3-3E{l2 <1.00£-16 NlA lE-15 <1.11E-02 8.17E-15 2.26E-16 IE-15 1.36E+00
2h~n·04 <1.ooE·16 1E·16 <1.11E--ol d.00E·16 NlA IE·15 <3.33E{l2 <1.00E-16 NlA lE-I6 <1.1IE-02 3.55E-15 2.:m:-16 2E-15 5.92E.{JI
27'SCp·C4 <1.O<IE-16 1[·1(j <1.11E-01 1.38E-16 1.97E·17 lE-15 4.59E-ol d.ooE·\6 NlA 110-16 <l.11E.{J2 1.22E-14 3.22E-16 2E-15 2.03E+00
27·0ec.(l4 1.05:;::·16 lE-16 l.1EE·Ol 1.72E-16 2.35E-17 1E-16 5.7E--ol -:1.ooE-16 NlA IE·I6 d.11E-02 1.52E·14 2.05E-16 2E-15 2.54E~OO
28.,.,13r.(;5 <I.ooE-16 lE-16 <1.11E-(Jl ,,1.ooE-16 NlA IE·16 <3_3-3E--02 <1.ooE-16 NlA lE-16 d.:IE{l2 9.34E-15 1.63E-16 2£-15 1.56E..oo
29-J.m·05 1.28E-16 lE-16 1.42E.(I1 1.01E-16 2.08E·17 IE·16 3AE-{l1 <1.00E·16 NlA IE·16 -:I.IIE--02 9.85E-15 1.85E-16 2E-15 I.64E+OO
26-Sep-05 1.98E-I6 1E-16 2.19E-ol 5.581:-16 5.11E-17 IE-Io 2.CE-OO 3.55E-15 5.97E·17 lE·16 3.95E-02 1.71E-14 6.18E-i6 2E-15 2.84E+00
3·Jan-OO 7.67E-16 lE-16 852E-ol 2.SBE_16 4,08£_17 1F.-16 9.6E{)1 3.60E.15 1.6;;£-16 IE-H;~.OOE·01 UlSE-14 6.99E-16 2E-15 6.09E+00
3·Aor.(}5 2.92E-16 lE-16 324E-ol 2.00E·16 2.67E·15 IE-16 6.7E-o'<1.00E-16 NlA IE·IS d.1tE.{)2 1.11E-14 2.52E-16 2E-15 I.B5E~OO
3-Jul-Q6 3.25E-16 lE-16 361E-ol 2.$E-16 3.92E-17 IE·16 7.9E-ol 1.06E·15 3.64E·17 IE-IS I.2JE--oZ 1.10E·14 4.28E-16 2E-15 1.83£..00
02 QcI-(}6
01-Jan-07
2-Apr-07
2-JuH>:7
30-Sep--()7
3HJec-07
31-Mar-<l8
613102008
30·Sep·08
31-Off-08
31-Mal--{)9
30·.1m·Q9
5.03E16
8.31E-16
s'36E-16
l.ose-15
J.92E-16
2.92[;-15
4.3-4E-16
1.88£-15
4_82E-15
4.aDE-15
2.77E-15
1.41E-15
lE-16
lE_16
1£-16
IE-16
IE-16
lE-16
IE·16
lE·16
lE·16
lE-16
lE-16
lE-16
5,59E-t)1
9.23E..00
595E-Ol
12GE-OO
'l.36E-QI
3.24
4.83E-ol
2.OSE+OO
S.3~+OO
5.34E+00
3.08E+OO
I.5tiE.QI
1"'9E-16
2,~9E'·16
3.15E-16
2.18f·16
I.02E-16
1.55E·15
3.5IE-16
9.oof·16
2,IOE-15
1.70E-15
1.01E-15
2.76E-16
3.35E17
5.04E-17
3.11E-17
5.74E-17
2.l:!OE-17
l.30E-16
3.38E-17
1.43E-16
1.54E-17
2.56E-16
I.5QE-16
3.~5E-17
lE16
lE_15
1E-16
1E-16
IE·16
,£·16
1E·16
lE·16
1E-16
1E·15
1E-16
1E·16
4.97EOI
8.31E.(I1
1.05E~ro
7.28E+00
3.39E-01
5.17£.00
1.17E+00
3,OOE+00
699E+00
5,68E~OO
338E~OO
8.89E-Ql
1.19E15
<1.ooE-16
<1.00E-16
1.54E·16
dE-16
3.15E·15
"lE-16
-4.04E-1S
1.27E-15
1.25£'15
7.82E-15
1.81E-1S
9.38E 17
NA
NA
7.4:<E-17
NA
6.306,17
NA
2.85E·17
6.59£-17
I.7GE-17
4.87E·17
124£:-17
lEIS
IE-H,
1E-15
1&16
IE-16
IE-II;
IE-16
IE-16
lE-16
IE-16
IE-16
IE-16
I.33E-02
..1.11E-Q2
<I.I1E-02
1.72E-02
<1.11E-02
3.51E.{J2
<1.11E-02
4.49E.(I2
l.4IE-ol
1.39E-{)1
8.68E-02
2.02E·02
2.13E-15
1.70E-14
1.43E-14
2.04E·14
6.38E·15
9.191:'15
5.99E-15
7.41E-15
1,00E·14
1.<9E-14
6..:6E-15
5.76E-I5
1.81E-16
5.17E-16
2_14£-16
7.42E-16
2.55E-16
2.T1E-16
1.94E_16
2.73E-16
2.4ZE-16
2.S~e·15
1.TTE-16
1.67E-15
2E-15
2E'15
2E-IS
2E-15
2E-15
2E-15
2£-15
2E-15
2E-15
2E-15
2E-15
2E-1S
3.55(.()1
2.84E...QQ
2.39E..00
3.41£+00
1.06E+00
1.53E..oo
9_98E_OI
1.24E+00
1.67E..00
Z.49E+OO
1.03E..00
9.61E-ol
Attachment B
illiij/;;iht.;r.....ENERGYLABORATORIES,INC.•2393Salt CreekHighway(82601)•p.o.Box 3258 •Casper,WY82802LlllflJ,,:'-I(,'D..TollFree 888,235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com
ANALYTICAL SUMMARY REPORT
May 14,2009
Denison Mines (USA)Corp
6425 S Hwy 191
Blanding,UT 84511
Workorder No.:C09040342
Project Name:1st Quarter Air
Energy Laboratories,Inc.received the following 6 samples for Denison Mines (USA)Corp on 4/9/2009 for analysis.
Sample 10 ClientSample 10 Collect Date Receive Date Matrix Test
C09040342·001 BHV·1
C09040342-002 BHV·2
C09040342-003 BHV-4
C09040342·004 BHV·5
C09040342·005 BHV·6
C09040342-006 Blank
04/06/09 00:00 04/09/09
04/06/09 00:00 04/09/09
04/06109 00:00 04/09/09
04/06/09 00:00 04/09109
04/06/09 00:00 04/09/09
04/06/09 00:00 04/09109
Filler
Filler
Filter
Filter
Filter
Filter
Composite oftwo or more samples
Metals,Total
Digestion, Total Metals
Lead 210
Radium 226
Thorium,Isotopic
Same As Above
Same As Above
Same As Above
Same As Above
Same As Above
As appropriate,any exceptions or problems with the analyses are noted in the Laboratory Analytical Report,the
QAlQC Summary Report,orthe Case Narrative.
Ifyou have any questions regarding these tests results,please call.
ReportA..,ove.BY~~
STEVEN E.CARLSTON
ENERGYLABORATORIES;INC.:',2393Sail CreekHighway(82801)•P.Q Box 3258 •Casper,>WY82iJ02
TollFree 888.235.0515 •3O??~5.:.(J5t5:•Fax 307.234,1839 •[e-mail] •www.energjl/iib,com
HIGH VOLUMEAlR SAMPLING REPORT
CLIENT:Denison Mines(USA)Corp
REPORT DATE:May 14,2009
PROJECT:lstQuarterAir
SAMPLE ID:BHV-I
QuarterlDateSampled Concentration Counting L.L.D.+EmuentCone.·%EmuentRadioDuclidePrecisionMDCflCUmLAirVolumeflCifmL"CilmL flCUmL flCilmL Concentration
C09040342-00I nalU 2.14E-15 N/A N1A 1.00E-16 9.00E-14 2.38E+00
FirstQuarter2009 23Dnt 1.02E-15 1.76E-16 9.47E-18 1.00E-16 3.00E-14 3.39E+OO
AirVolume inmLs 22'Ra 1.00E-15 5.94E-17 1.73E-11 1.00E-16 9.00E-13 I.liE-OJ
1.I5E+II 210pb 4.44E-15 1.84E-16 2.38E-16 2.00E-15 6.00E-13 7.40E-01
+LLD's are from Reg.Guide4.14
'EffluentConcentration from the NEW 10 CFRPart 20-Appendix B -Table 2
Year for Natural Uranium
Year for Thorium-230
Weekfor Radium-226
Dayfor Lead-210
ENERGYLABORATORIES,INC••2393Sail CreekHighway (82601)•Po.Box3258 •Casper,WY82802
70/1Free 888.235.0515 •307.235.0515 •Fax [phone] •casper@energy/ab.com •www.energytab.com
LABORATORY ANALYTICAL REPORT
,"1.~,t
Client:
Project:
Lab 10:
Client Sample ID:
Denison Mines (USA)Corp
1st Quarter Air
C09040342-001
BHV-1
Report Date:05/14/09
Collection Date:04/06/09
DateReceived:04/09/09
Matrix:Filter
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date /By
TRACE METALS
Uranium 0.364 mg/filter 0.0003 SW6020 04117/0900:18/sml
Uranium,Activity 247 pCilFilter 0.2 SW6020 04117/0900:181 sml
RADIONUCLIDES •TOTAL
lead 210 512 pCilFiIler E909.0M 04/28/09 09:26 /dm
lead 210 precision (±)21 pCilFilter E909.0M 0412B/09 09:26 1dm
lead 210 MDC 27 pCilFilter E909.0M 04128/09 09:26 1dm
Radium 226 115 pCilFliter E903.0 04/21/09 11 :30 Ilrs
Radium 226 precision (:1:)6.8 pCilFilter E903.0 04121/0911:30/trs
Radium 226 MDC 2.0 pCilFilter E903.0 04/21/0911:30/trs
Thorium 230 117 pCilFilter E907.0 04120/0919:181 dmf
Thorium 230 precision (±)20 pei/Filter E907.0 04120/0919:181dmf
Thorium 230 MDC 1.1 pCilFilter E907.0 04/20/09 19:181 dmf
Report
Definitions:
RL -Analyte reporting limit.
QCL •Quality oontrollimit.
MOC •Minimum detectable concentration
MCl·Maximum contaminant level.
NO -Not detected at the reporting limit.
!?~?"...r.!?ENER.GYLABORATORIE5,INC••2393Salt CreekHighway(82801)•t:o.Box3258 •Casper;WY82802!~~!!!~~~70//Free888.'235.0515 •307.235.0515 •Fax [phone] •[e-mail] •www.energy/ab.com
HIGH VOLUME AIR SAMPLING REPORT
CLIENT:Denison Mines (USA)Corp
REPORT DATE:May 14,2009
PROJECT:1st QuarterAir
SAMPLE ID:8HV-2
Quartermate Sampled Com:entration Counting L.L.D.+EmuentCone.*%EmuentRadionuclidePrecisionMDC/-lCVmLAirVolumeJiCVmL/-lCVmL /-lCVmL IlCVmL Concentration
C09040342-002 ""'u 3.96E-16 N/A N/A l.ooE-16 9.00E-14 4.4IE-01
First Quarter 2009 BOTh 1.38E-16 3.26B-17 9.48E-18 l.ooE-16 3.00E-14 4.60E-ol
Air Volume in mL 22~1.07E-16 1.83E·17 1.32E-17 1.00E-16 9.00E-13 1.18E-02
1.36E+II 210Pb 4.81E-15 1.65E-16 2.02E-16 2.00E-15 6.00E-13 8.02E-OI
+LLD's are from Reg.Guide 4.14
"EffluentConcentration from the NEW 10 CFR Part 20 -Appendix B •Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead.210
.,ENERGYLABORATORIES,tNC••23fJ3 Salt CreekHighway(82601)'P,o.Box3258 '.CaSPfJr;WY92602Ly:ttl!'.,liJ/iFree 888.235.0515,'30if.2§q.0515 •Fax [phone] •[e-mail] •WWlV.O(lf!rgY{a.i?9o,m
I.AflORATORtE S--------_._-
LABORATORY ANALYTICAL REPORT
Client
Project:
Lab 10:
ClientSample 10:
Denison Mines (USA)Corp
1st QuarterAir
C09040342-002
BHV-2
Report Date:05/14/09
Collection Date:04/06/09
OateReceived:04/09/09
Matrix:Filter
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date 1By
TRACE METALS
Uranium 0.0796 mglfilter 0.0003 SW6020 04(17/09 00:26 /sml
Uranium,Activity 54.0 pCilFilter 0.2 SW6020 04(17/09 00:26 I sml
RAOIONUCLIOES •TOTAL
lead 210 656 pCilFilter E909.0M 04/28/09 09:26 I dm
lead 210 precision (±)22 pCilFilter E909.0M 04128109 09:26 I dm
lead 210 MDC 27 pCi/Filter E909.0M 04/28109 09:26 I dm
Radium 226 14.5 pCilFilter E903.0 04121109 11 :30 /trs
Radium 226 precision (±)2.5 pCilFilter E903.0 04121109 11:30 Itrs
Radium 226 MDC 1.8 pCilFilter E903.0 04121/09 11:30 I trs
Thorium 230 19 pCilFilter E907.0 04120109 19:18/dmf
Thorium 230 precision (±)4.4 pCilFilter E907.0 04/20/0919:18/dmf
Thorium 230 MDC 1.3 pCilFilter E907.0 04/20/09 19:18/dmf
Report
Definitions:
RL -Analyle reporting limit.
QCL -Quality control limit.
MDC -Minimum detectable concentration
MCl -Maximum contaminant level.
ND -Not detected at the reporting limit.
ENERGYLABORATORIES,INC••2393Sah GreekHighway(82601)•P.D.Box3258 •Casper,WY82602
TollFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com
;';.';:~'\.
(?:.~~.{
HIGH VOLUME AIR SAMPLING REPORT
CLIENT:Denison Mines (USA)Corp
REPORT DATE:May 14,2009
PROJECT:lst QuarterAir
SAMPLE 10:BHV-4
QuarterlDate Sampled Concentration Counting L.L.D.+EmuentCone.·%EffiuentRadionuclidePrecisionMDCI1CilmLAirVolume,.CilmL I1CilmL IlCilmL IlCilmL Concentration
C09040342-003 "'u 1.56E-15 NfA N/A 1.00E-16 9.00&14 1.73E+OO
First Quarter 2009 2l00rh 4.57E-16 7.80E-17 6.90E-18 1.00E·16 3.00E-14 1.52E+00
Air Volume in mL 22~a 2.99E-16 3.00E-17 1.40E-17 1.00E-16 9.00E-13 3.32E·02
1.36E+II 210pb 4.97£-15 1.66£-16 2.02E-16 2.00E-15 6.00E-13 8.28E-01
+LLD's are from Reg.Guide 4.14
"Effluent Concentration from the NEW 10 CFR Part 20 -Appendix B•Table 2
Year for Natural Uranium
Yearfor Thorium-230
Week for Radium-226
Day for Lead-210
ENERGYLABORATORIES,INC.-2393SailCreek Highway (82801)-PO;Box3258 -Casper,WY82802
Tollf{l7le/JjJ8.235.0515 -307.285.0515 •Fax [phone] •[e-mail] -www.energylab.com
LASORATORY ANALYTICAL REPORT
Client:
Project:
Lab ID:
Client Sample ID:
Denison Mines (USA)Corp
1st Quarter Air
C09040342-003
BHV-4
Report Date:05/14/09
Collection Date:04106109
DateReceived:04/09/09
Matrix:Filter
....._._.__._.__._----------------------------_--
MCU
Analyses Result Units Qualifiers Rl QCl Method Analysis Date I By
TRACE METALS
Uranium 0.312 mg/lilter 0.0003 SW6020 04117109 00:30 /sml
Uranium,Activity 212 pCi/Filler 0.2 SW6020 04/17/09 00:30 /sml
RADIONUCLIDES -TOTAL
Lead 210 '675 pCilFilter E909.0M 04/28109 09:26 /dm
Lead 210 precision (±)23 pCilFilter E909.0M 04/28109 09:26 I dm
lead 210 MDC 27 pCilFilter E909.0M 04/28/09 09:26 /dm
Radium 226 40.6 pCilFilter E903.0 04121109 11 :30 1trs
Radium 226 precision (±)4.1 pCilFilter E903.0 04/21109 11:30/Irs
Radium 226 MDC 1.9 pCilFilter E903.0 04121/09 11 :30/Irs
Thorium 230 62 pCi/Filter E907.0 04120/09 19:181 dmf
Thorium 230 precision (±)11 pCilFilter E907.0 04/20/09 19:18 1dmf
Thorium 230 MDC 0.94 pCilFilter E907.0 04/20/09 19:18/dmf
Report
Definitions:
Rl -Analyte reporting limit.
QCL -Quality control limit.
MDC -Minimum detectable concentration
Mel·Maximum contaminant level.
ND •Not detected at the reporting limit.
ENERGYLABORATORIES,INC.•2393 SaltCreekHighway (82801)'Po.Box 3258 "(J,lJJipel;WY82602
TollFree 888.235.0515''301235.0515 •Fax [phone] •[e-mail]·www.energjlab.com
HIGH VOLUME AIR SAMPLING REPORT
CLIENT:Denison Mines (USA)Corp
REPORT DATE:May 14,2009
PROJECT:1stQuarter Air
SAMPLE ID:BHV-5
QuarterlDate Sampled Concentration CouDting L.L.D.+EffluentCODC.*%EffluentRadionuclidePrecisionMDC/-lCilmLAirVolume/-lCilmL /-lCilmL JlCi/mL IlCi/mL Concentration
C09040342-004 ..,u 4.20E-15 NfA NfA 100E-16 9.00E-14 4.67E+OO
Firsl Quarter 2009 Zlllrh 141E-15 2.18E-16 8.11E-18 100E-16 3.00E-14 4.69E+00
Air Volume in mLs 2l6Ra 1.43E-15 6.72E-17 1.56E-17 100E-16 9.00E-13 1.59E-OI
1.36E+II 210pb 4.73E-15 I.64E-16 2.02E-16 2.00E-15 6.00E-13 7.89£-01
+LLD's are from Reg.Guide 4.14
•EffluentConcentration from the NEW 10CFR Part 20 -Appendix B -Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
ENERGYLABORATORIES,INC••2393SaltCreek Highway(82601)•Po.Box 3258 •Casper,WY82602 '
701/Free 888.235.0515 •301.235.0515 •Fax [phone] •[e-mail] •www.energylab.com
LASORATORY ANALYTICAL REPORT
,
'1 ~-,-
Client:
Project:
LabID:
Client Sample ID:
Denison Mines (USA)Corp
1stQuarter Air
C09040342-004
BHV-5
Report Date:05114/09
Collection Date:04/06/09
DateReceived:04/09109
Matrix:Filter
MCl.1
Analyses Result Units Qualifiers RL QCL Method Analysis Datef By
TRACE METALS
Uranium 0.844 mglfilter 0.0003 SW6020 04117/09 00:50I sml
Uranium.Activity 571 pCilFilter 0.2 SW6020 0411710900:50 f sml
RADIONUCLIDES -TOTAL
lead 210 644 pCI/Filter E909.0M 04128109 09:26 f dm
lead 210 precision (±)22 pCVFilter E909.0M 04128109 09:26 I dm
lead 210 MDC 27 pCiJRlter E909.0M 0412810909:261 dm
Radium 226 194 pCilFilter E903.0 04121109 11 :30I trs
Radium 226 precision (t)9.1 pCilFilter E903.0 04121109 11 :30Itrs
Radium 226 MDC 2.1 pCilFilter E903.0 04121/0911:30/trs
Thorium 230 192 pCilFllter E907.0 04/20/09 19:181 dmf
Thorium 230 precision (t)30 pCI/Filter E907.0 0412010919:181 dmf
Thorium 230 MDC 1.1 pCI/Filter E907.0 04120/09 19:181 dmf
Report
Definitions:
Rl-Analyte reporting limit.
QCl -Quality control limit.
MDC -Minimum detectable concentration
MCl-Maximum contaminant level.
ND -Not detected at the reporting limit.
r\
\
r ENERGYLABORATORJE5.INC..2393Sa//CreekHighway(82Q01J;·P'0-8ox3258 •Casper,WY82Q02/g<gllG7 ToI/Ff6fJ888,235.0515·307.235.0515 •Fax [phone] •caspel;(,We.n.eigylab.com·www.energylab,com
"'W4fjf#jl'f
HIGH VOLUME AIR SAMPLING REPORT
CLIENT:Denison Mines (USA)Corp
REPORT DATE:May 14,2009
PROJECT:1st QuarterAir
SAMPLE 10:BHV-6
QuarterlDate Sampled Concentration Counting L.L.D.+Effluent Cone.·%EffiuentRadionuclidePrecisionMDC/lCifmLAirVolumeflCilmLflCilmL /lCifmL flCilmL Concentration
C09040342·005 nalU 2.77E-15 NlA N/A 1.00E-16 9.00E-14 3.08E+OO
First Quarter 2009 23"Th l.01E-15 1.56E-16 5,92E-18 1.00E-16 3.ooE-14 3.38E+OO
Air Volume in mw 226Ra 7.82E-16 4.81£-17 1.48E-17 1.00E-16 9'ooE-13 8,68E-02
1.36E+1I 210pb 6.46E-15 1.77E-16 2.02E-16 2.00E-15 6.ooE-13 1.08E+OO
+LLD's are from Reg.Guide 4.14
"Effluent Concentration from the NEW 10 CFR Part20 -Appendix B •Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
·ENERGYLABORATORIES,INC.•2393Salt CreekHighway(82601)•PoD.Box3258 ;"casper,WY 82602IIIJjWToUFree888.235.0515 ~'307-285.0515 •Fax [phone] •[e-mail]·Wwl¥.Mergylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab ID:
Client Sample 10:
Denison Mines (USA)Corp
1st QuarterAir
C09040342-005
BHV-6
Report Date:05114109
Collection Date:04/06/09
DateReceived:04/09/09
Matrix:Filter
MCU
Analyses Result Units Qualifiers Rl Qel Method Analysis Date f By-
TRACE METALS
Uranium 0.557 mglfilter 0.0003 SW6020 04/17/09 00:59/sml
Uranium.Activily 377 pCiiFilter 0.2 SW6020 04/17/0900:59/sml
RADIONUCLIDES -TOTAL
lead 210 879 pCilFilter E909.0M 04128/09 09:261 dm
lead 210 precision (±)24 pCilFilter E909.0M 04128/09 09:26I dm
lead 210 MOG 27 pCilFilter E909.0M 04128/09 09:261dm
Radium 226 106 pCilFilter E903.0 0412,/09,,:30Itrs
Radium 226 precision (±)6.6 pCilFiller E903.0 04121/09 11:30 firs
Radium 226 MDC 2.0 pCilFilter E903.0 04121109 11:30I trs
Thorium230 138 pCilFilter E907.0 04120/09 19:181 dmf
Thorium 230 precision (±)21 pCilFiIler E907.0 04120/09 19:181dmf
Thorium 230 MDC 0.81 pCilFilter E907.0 0412010919:181 dmf
Report
Definitions:
RL -Analyte reporting limit.
QCl-Quality control limit.
MDC -Minimum detectable concentration
MCl -Maximum contaminantlevel.
NO -Not detected attha reporting limit.
.~t'
~i5.«,r«tH'fitlU,,'
ENERGYLABORATORIES,INC.•2393SaltCreekHighway (82601)•P.G.Box3258 •Casper,WY82602 '.,;.
liJlIFree 888.235.0515 •307.235.0515 •Fax·307.234.1639 •[e-mail]·www.energylab.com i.··:·I
HIGH VOLUME AIRSAMPLING REPORT
CLIENT:Denison Mines (USA)Corp
REPORT DATE:May 14,2009
PROJECT:1stQuarter Air
SAMPLE 10:Blank
QuarterillateSampled Concentration Counting L.L.D.+Effluent Conc.*%EffluentRadionuclidePrecisionMDCp.CifmLAirVolumepCilmLp.CilmL p.CilmL p.CilmL Concentration
C09040342-006 ""u 9.46E-18 N/A N/A 1.00E-16 9.00E-14 1.05E·02
FirstQuarter 2009 2JOn,-2.92E-18 5.80E-18 9.17E-18 1.00E-16 3.ooE-14 -9.74E-03
Air Volumein mL 22~a -8.95E-18 7.00E-18 1.53E-17 1.00E-16 9.ooE-13 -9.94E-04
1.40E+l1 210pb -3.33E-17 1.I7E-16 1.96E-16 2.00E-15 6.00E-13 -5.54E-03
Note:111is sample uses 140,000,000L ofair volume for companson purposes.
+LLD's are from Reg.Guide 4.14
*EflIuent Concentration from the NEW 10 CFRPart20 -Appendix B-Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day forLead-210
,/.:~
IU,i&'ENERG,y,LABORATORIE8,INC.•2393SaltCreek Highway (82801)·PQ.B..OX.3258 •Casper,WY82802
7011Free 81J8.'2S5.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com
LAIIQNA/ON//-\-----
LASORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample 10:
Denison Mines (USA)Corp
1st QuarterAir
C09040342-006
Blank
Report Date:05114/09
CollectIon Date:04/06/09
DateReceived:04/09/09
Matrix:Filter
Analyses Result Units Qualifiers RL
MCL!
QCl Method Analysis DateI By ':.'
TRACE METALS
Uranium
Uranium,Activity
0.0020
1.3
mgffilter
pCi/Filter
0.0003
0.2
SW6020
SW6020
04117109 00:54 1sml
04/17/09 00:541 sml
RADIONUCLIDES -TOTAL
lead210
lead 210 precision (t)
lead210 MDC
Radium 226
Radium 226 precision (±)
Radium 226 MOC
Thorium 230
Thorium 230 precision (t)
Thorium 230 MOe
-5 pCilFilter U
16 pCilFiIler
27 pCi/FiIler
-1 pCilFilter U
1 pCilFilter
2.1 pCilFilter
-0.4 pCilFilter U
0.81 pCilFilter
1.3 pCi/Filter
E909.0M
E90S.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
E907.0
04128109 OS:261dm
04128/09 09:261dm
04128109 09:261dm
04121109 11 :30I trs
04121109 11:301 trs
04/21/0911:301 trs
0412110906:581 dmf
04/21/0906:581 dmf
04/21/0906:581 dmf
Report
Definitions:
Rl-Analyte reporting limit.
Qel -Quality control limit.
MDC -Minimum detectable concentration
MCl -Maximum contaminant level.
ND -Not detected at the reporting limit.
U -Not detected at minimum detectable concentration
/il/itliJ'ENERGYLABORATORIE~INC.:·2893Sail CreekHighway(821,'601J•Po.Box3258 •Casper,W'K82602TollFree888.235.0515 •307.23fUJ51ffi·Fax [phone] •[e-mail]·www.energylablCO/lJ·'
l AlIORATnfllf.50_._••_._._
QAIQC Summary Report
Client:Denison Mines (USA)Corp
Project:1st Quarter Air
Report Date:05/14/09
Work Order:C09040342
Analyte
i
Method:E903.0
Result Units RL %REC Low Limit High Limit RPD RPDUmit Qual
Batch:22016
Sample 10:C09040342-o01AOUP
Radium 226
Radium 226 precision (±)
Radium 226 MDC
Sample 10:C09040342-o06AMS
Radium 226
Sample 10:LCS-22016
Radium 226
Sample 10:MB-22016
Radium 226
Radium 226 precision (±)
Radium 226 MDC
Method:E907.0
Sample Duplicate
119 pCi/Filter
6.99 pCilFilter
2.02 pel/Filter
Sample Matrix Spike
158 pCi/Filter
Laboratory Control Sample
16.2 pCi/Filler
Method Blank
-0.3 pCI/Filler
0.1 pCi/Filter
0.4 pCI/Filter
Run:BERTHOLD 770-1_090415A
2.9
Run:BERTHOLD 770-1_090415A
109 70 130
Run:BERTHOLD 770-1_090415A
110 70 130
Run:BERTHOLD 770-1_090415A
04/21/09 11:30
21.8
04/21/0911:30
04/21/09 11:30
04/21/0913:06
U
Batch:22016
Sample 10:C09040342-o04AMS Sample Matrix Spike Run:EGG-ORTEC_090416B 04/20/0919:18
Thorium 230 259 pCilFilter 160 70 130 S
-Sample response is much largerthan spike amount.therefore smallvariances in the sample adverselyaffectedthe recovery.The LCS and the RPO of theMSIMSO pair
meets acceptance criteria;this batch is approved.
Sample 10:C09040342-o04AMSD
Thorium 230
Sample 10:LCS-22016
Thorium 230
Sample 10:MB·22016
Thorium 230
Thorium 230 precision (±)
Thorium 230 MDC
Sample Matrix Spike Duplicate
244 pCi/Filler
Laboratory Control Sample
5.42 pCilFiller
Method Blank
·0.02 pCilFilter
0.2 pCilFilter
0.4 pCilFilter
Run:EGG·ORTEC_090416B
121 70 130 5.9
Run:EGG-ORTEC_090416B
117 70 130
Run:EGG-ORTEC_090416B
04/20/09 19:18
42
04/21/0906;58
04/21/0906:58
U
Qualifiers:
RL -Analyle reporting limit.
MDC •Minimum detectable concentration
U -Not detected al minimum detectable concentration
ND -Not detected at the reporting limit.
S -Spike recovery outside of advisory limits.
r ENERGY:LABORATORIE5,INC••2393SailCreekHighway(8280f)•Po.Box 3258 •Casper,WY82802IL'(l~To/IFreeP,88.285i0515·307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com
"~tdfJt?UIll!I&'
QA/QC Summary Report
Client:Denison Mines (USA)Corp
Project:1stQuarterAir
ReportDate:05114109
Work Order:C09040342
Analyte
Method:E909.0M
Result Units RL %REC LowLImit High Limit RPD RPDLlmlt Qual
Batch:R117778
Sample 10:C09040342-o02AMS Sample Matrix Spike Run:BECKMAN 6100TA_090428A 04128/0909:26
lead 210 20BO pCi/Fifter 131 70 130 S
-Spike response is outside of the acceptance range forthis analysis.Since the les and the RPD forthe MS MSDpair are acceptable,the response is considered to be
matrixrelated.The batch isapproved.
Sample 10:C0904034Z-002AMSD
Lead 210
Sample 10:MB-R117778
Lead 210
lead 210 precision (:1:)
Lead 210 MOC
Sample 10:LCS·R117778
Lead 210
Method:SW6020
Sample 10:MB-22016
Uranium
Sample 10:LCS2·22016
Uranium
Sample 10:C09040342-o05AMS
Uranium
Sample Matrix Spike Duplicate
2190 pCilFilter
Method Blank
-0.10 pCilFilter
3 pCVFilter
6 pCilFiIler
laboratory Control Sample
91.3 pCi/Filter
Method Blank
7E-05 mg/filter
Laboratory Control Sample
0.114 mg/filter
Sample Matrix Spike
0.622 mg/filter
0.00030
0.00030
Run:BECKMAN 6100TA_090428A
141 70 130 5.4
Run:BECKMAN 6100TA_090428A
Run:BECKMAN 6100TA_090428A
84 70 130
Run:ICPMS4-e_090416B
Run:ICPMS4-e_090416B
114 85 115
Run:ICPMS4-e_090416B
75 125
04128/09 09:26
30 S
04128/09 09:26
U
04/28/09 09:26
Batch:22016
04/1710900:06
04117/0900:10
04/17/0901 :03
A
Sample 10:C0904034Z-005AMSD
Uranium
Sample Matrix Spike Duplicate
0.615 mg/filter 0.00030
Run:ICPMS4-e_090416B
75 125 1.2
04/1710901:07
20 A
Qualifiers:
RL -Analyte reporting limit.
NO -Not detected atthe reporting limit.
S -Spike recovery outside ofadvisory limits.
A •The analyte level was greaterthan four times the spike level.In
accordance with the method %recovery is not calculated.
MDC -Minimum detectable concentration
U-Not detected at minimum detectable concentration
Chain of Custody and Analytical Request Record
PLEASE PRlNT-Provide CIS muchinformation aspossible.
Project Name,PWS,Permit,Etc.
JS"--Ut,<.c--rz.ni'L 1.4;/.
Page __of __,.
r'
Sampler:(Please Print)
QuotelBottle Order:
EPA/State Compliance:
Yes 0 No 0
Purchase Order:
Email:
Sample Origin
State:LA I
t77"'-Z7'2j
~-<.....
Contact Name:Phone/Fax:
fh~()fV/~f
Invoice Contact &Phone:Invoice Address:T
~~
Report Mail AddreJ\s:~.l'-l>~607
ek",/!{,':..,l{7 gL(S'(f
C~nYName:
U,.v\\>G/f',.M\~...~\.
..
Special ReporUFormats -ELI must be notified
priorto sample submittal for the following:
DA2LAoEOO/EOT(ElectronicData)
Fonnat:_o LEVEL IVoNELAC
I-I ~/-VVI/I/
iffY I/<--D,171/171/
~'<if'
~[Q)
~~
II
I~
~I~Ie'c~t'IU (,~r~
Contact ELI prior to
R RUSH sample submittal
!='for charges and
Q ~scheduling -See
W U Instruction Page::r::"C(.)c Comments:::l~e11lc:S...<C .=Yes
W (;j Custody Seal N
W E H Bottlesl B ()~(j)0 Coolers tJ..Z Intact
S1gnatul'Q
Match
~W@[J@ffi1§®Q!J~
r-v171/1/
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I!!CXl en=~>;gOI-en 0 >.~s:~~0«'8 <tl(.,).WI.521-!R~CXlO~c::lI~~r~E-~Q)=~,C)z~~I
I I C)17171717
I
;114 Il~,.A ):/F/~
NI1-Ii~·14 P17f71/
~~~
~
CollectionTimeI MATRIX :-0
J
/
Collection
Date
-c
4'),,61
'I'b'Of
!lTG'07
SAMPLE IDENTIFICATION
(Name,Location,Interval,etc.)
1IS !-f1/-J
Dow
DGSAoPOTWfWWTPoState:_o Other:_
5 is'H1f=-h
4 t,/-hI ~,C:-
2K~\i_"9
3"RU\f -4
6 RI/-iv'1 If c.,
B r§f
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9
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Lab Disposal:
7 fJ;jo-·Sig
Signature:
Signature:
Sample Disposal:Return toClient:
'"
In certain circumstances,samples submitted to Energy Laboratories,Inc.may be subcontracted to othercertified laboratories in order to complete the analysis requested.
This serves as notice ofthis possibility.All sub-contract data will be clearly notated on your analytical report.
Visit our web site at www.energylab.com for additional information,downloadable fee schedule,forms,and links.
Vk fA ENERGYLABORATORIES,INC.•2393Salt CreekHighway (82601)•P.D.Box3258 •Casper;WY82602'''''fgl{tI!)7 Toll Free 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail] •www.energylab.cam
LAflORATORIES
ANALYTICAL SUMMARY REPORT
August 05,2009
Denison Mines (USA)Corp
6425 S Hwy 191
Blanding,UT 84511
Workorder No.:C09070362
project Name:2nd Quarter Air
Energy Laboratories,Inc.received the following 6 samplesforDenison Mines (USA)Corp on 7/9/2009 for analysis.
Sample 10 Client Sample 10 Collect Date Receive Date Matrix Test
C09070362-001 BHV-1 07/06/0900:00 07/09/09 Filter Composite oftwo or more samples
Metals,Total
Digestion, Total Metals
Lead 210
Radium 226
Thorium,Isotopic
C09070362-002 BHV-2 07/06/0900:0007/09/09 Filter Same As Above
C09070362-003 BHV-4 07/06/0900:00 07/09/09 Filter Same As Above
C09070362-004 BHV-5 07/06/0900:00 07/09/09 Filter Same As Above
C09070362-D05 BHV-6 07/06/09 00:00 07109/09 Filter Same As Above
._-"-_..
C09070362-006 Blank 07106/0900:00 07/09/09 Filler Same As Above
As appropriate,any exceptions orproblems with the analyses are noted In Ihe Laboratory Analytical Report,the
OAIQC Summary Report,orthe Case Narrative.
If you have any questions regarding these tests results,please call.
R.pertMo,oYOd By.~~tf!;t=-­
steven E.Carlston
Technical Director
Jilflli!N
mtll!$§"+JjlJi,
ENERGYLABORATORIES.INC••2393 SaltCreek Highway(82601)•P.O.Box3258 '.Casper,WY82602
7011Free 888.235.0515 •307>235.0515 •Fax [phone] •[e-mail]·www.energylab.com
HIGH VOLUMEAIRSAMPLING REPORT
CLIENT:Denison Mines (USA)Corp
REPORT DATE:August7,2009
PROJECT:2nd QuarterAir
SAMPLEID:BHY·!
Quarterfflate Sampled Concentration Counting L.L.D.+EmuentConc.*%Effluent
AirVoJume RadionucJide /lCi/mL Precision MDC/lCi/mL /lCi/mL /lCi/mL Concentration/lCi/mL
C09040342·001 narU 2.14E·15 N/A NfA 1.00E-16 9.00E·14 2.38E+OO
First Quarter 2009 2J'1n 1.02E-15 1.76E-16 9.47E-18 l.ooE-16 3.00E-14 3.39E+00
Air Volume in mL 22~a 1.00E-15 5.94E·17 1.73E-17 1.00E-16 9.00E-13 l.l1E·01
1.15E+11 210pb 4.44E·15 1.84E-16 2.38E-16 2.ooE-15 6.00E-13 7.40E-Ol
Quarterfflate Sampled Concentration Counting L.L.D!Emuent Cone.*%Effluent
AirYolume RadionucJide /lCilmL Precision MDC /lCilmL pCilmL /lei/roL ConcentrationIlCi/mL
C09070362·001 natU 5.97E·17 NfA NfA 1.00E·16 9,00E-14 6.63E·02
Second Quarter 2009 23'1n 2.35E-16 3,27E-17 2.99E-18 1.00E-16 3.00E-14 7.84E-OI
Air Volumein mLs 22~a 2.18E-16 1.35E-17 3.57E-18 1.00E-16 9.00E-13 2.42E-02
1.36E+ll 2lOpb 5.13E-15 1.44E-16 I.64E-16 2.00E-15 6.00E-13 8.55E-OI
+LLD's are from Reg.Guide 4.14
"EIDuentConcentrationfrom the NEW 10 CPR Part20 •AppendixB·Table 2
Year forNatural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
imf.'It1liltl'@iltif'
ENERGYLABORATORIES,INC.•2393Sa/t Creek Highway(82601).P.o.Box3258 •Casper,WY82602
lOllFree888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]
LABORATORY ANALYTICAL REPORT
(-.':
Client:
Project:
Lab 10:
Client Sample 10:
Denison Mines (USA)Corp
2nd Quarter Air
C09070362-001
BHV-1
Report Date:08/05109
Collection Date:07/06/09
DateReceived:07/09/09
Matrix:Filter
MCU
Analyses Result Units Qualifiers RL aCL Method Analysis Dale /By
TRACE METALS
Uranium 0.0120 mg/filler 0.0003 SW6020 07123109 06:14/ts
Uranium,Activity 8.1 pCi/FiIler 0.2 SW6020 07123/0906:141ts
RADIONUCLlDES·TOTAL
Lead 210 700 pCilFilter E909.0M 07/28109 08:291 dm
Lead 210 precision (±)20 pCilFiller E909.0M 07/28109 08:291 dm
Lead 210 MDC 22 pCilFilter E909.0M 07128/09 08:291 dm
Radium 226 29.7 pCilFilter E903.0 07123/09 11 :41 I trs
Radium 226 precision (±)1.8 pCi/Filler E903.0 07123109 11 :41 /trs
Radium 226 MDC 0.5 pCilFiller E903.0 07123/09 11 :41 I trs
Thorium 230 32 pCilFiIler E907.0 07131/0915:051 dmf
Thorium 230 precision (±)4.5 pCilFiller E907.0 07131/0915:051 dmf
Thorium 230 MDC 0.41 pCilFilter E9D7.0 07/31/0915:051 dmf
Report
Definitions:
Rl-Analyte reporting limit.
aCl -Quality control limit.
MDC •Minimum detectable concentration
MCl -Maximum contaminant level.
ND •Not detected at the reporting limit.
; -ENERGYLABORATORIES,INC.•2393Salt Creek Highway(82601)·;P.O Box3258 •Caspe!;WY82602tUlll{rt'I lOllFree888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.compm.4"fi·1£IID
HIGH VOLUME AIR SAMPLING REPORT
CLIENT:Denison Mines (USA)Corp
REPORT DATE:August 7,2009
PROJECT:2nd QuarterAir
SAMPLE 10:BHV-l
Quarterfflate Sampled Concentration Counting L.L.D.+EffluentCone.*%Effluent
Air Volume Radionuclide IlCilmL Precision MDCIlCilmL /lCilmL IlCilmL ConcentrationJlCilmL
C09040342-002 natU 3.96E-16 N/A N/A 1.00E-16 9.00E-14 4.41E·OI
First Quarter 2009 2l<>rh 1.38E-16 3.26E-17 9.48E-18 1.00E·16 3.00E-14 4.60E·0I
Air Volume in mL 221ta 1.07E-16 1.83E-17 1.32E-17 1.00E-16 9.00E-13 1.18E-02
1.36E+1I 210pb 4.81£-15 1.65E-16 2.02E-16 2.00E-15 6.00E-13 8.02E-OI
QuarterlDateSampled Concentration Counting L.L.D.+EffluentConc.*%EffluentRadionucliilePrecisionMDCIlCilmLAirVolumeIlCilmLJlCifmL/lCilmL IlCifmL Concentration
C09070362-002 nalU 1.24E-17 N/A N/A 1.00E-16 9.ooE-14 1.38E-02
Second Quarter 2009 23°Th 4.64E-17 8.54E-18 2.77E-18 1.00E-16 3.ooE-14 1.55E-01
Air Volume in mL 226Ra 5.IIE-17 6.60E-18 3.39E-18 1.00E-16 9.00E-13 5.68E·03
1.36E+II 210pb 4.58E-15 1.39E-16 1.64E-16 2.00E-15 6.00E-13 7.63E-01
+LLD's are from Reg.Guide 4.14
"Effluent Concentration from the NEW 10 CFRPart20 -Appendix B•Table 2
Year for Natural Uranium
Year for 1l1Orium-230
Week for Radium-226
Day for Lead-210
If
ENERGYLABORATORIES,INC.·2393Sa/I CreekHighway(82801J •p.Oo Box3258 •Casper;WY82602lfJ'lI(f{'>W Tol/Free 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]':energylab.com.,"liU";-1jll4'
LABORATORYANALYTICAL REPORT
Client:Denison Mines (USA)Corp
Project 2nd Quarter Air
Lab 10:C09070362-D02
Client Sample 10:BHV-2
Report Date:08/05/09
Collection Date:07/06/09
DateReceived:07/09/09
Matrix:Filter
MCU
Analyses Result Units Qualifiers Rl QCl Method Analysis Date I By
TRACE METALS
Uranium 0.0025 mg/filter 0.0003 SW6020 07123/0906:18/ts
Uranium,Activity 1.7 pCilFilter 0.2 SW6020 07123/0906:18/ts
RADIONUCLlDES·TOTAL
Lead 210 625 pCilFilter E909.0M 07128/0908:29 I dm
Lead 210 precision (±)19 pCilFilter E909.0M 07128/0908:29 I dm
Lead 210 MOC 22 pCi/Filter E909.0M 07128/09 08:29I dm
Radium 226 7.0 pCi/Filter E903.0 07123/09 11:41 I trs
Radium 226 precision (±)0.9 pCilFilter E903.0 07123109 11:41 Itrs
Radium 226 MDC 0.5 pCilFilter E903.0 07123/09 11 :41 Itrs
Thorium 230 6.3 pCilFilter E907.0 07131109 15:051 dmf
Thorium 230 precision (±)1.2 pCilFilter E907.0 07131/0915:05/dmf
Thorium 230 MDC 0.38 pCilFilter E907.0 07131/09 15:05/dmf
Report
Definitions:
RL -Analyte reporting limit.
QCL•Quaiity control limit.
MDC •Minimum detectable concentration
Mel·Maximum contaminant level.
NO -Not detected at the reporting limit.
ENERGYLABORATORIES,INC.·2393SaltCreekHfghway(82601j·P.o.Box3258 •Casper,WY82602 i'11l~l{l{"'7 TollFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com }i..,crn.tz&ri.]"ti'
HIGH VOLUME AIR SAMPLING REPORT
CLIENT:Denison Mines (USA)Corp
REPORT DATE:August 7,2009
PROJECT:2nd Quarter Air
SAMPLE 10:BHV-4
Quartermate Sampled Concentration Counting L.L.D.+Effluent Cone.·%Effluent
Air Volume Radionuclide ,.CilmL Precision MDC /lCilmL ,.Ci/mL J1CilmL ConcentrationIlCilmL
C09040342·003 Il3lU 1.56E-15 N/A N/A 1.00E-16 9.00E-14 1.73E+OO
First Quarter2009 230Th 4.57E-16 7.80E-17 6.90E-18 1.00E-16 3.00E-14 1.52E+00
Air Volume in rnLs 22~a 2.99E·16 3.00E-17 1.40E·17 LODE-I6 9.00E-13 3.32E-02
1.36E+11 2IOPb 4.97E-15 166E-16 2.02E-16 2.00E-15 6.00E-13 8.28E-01
Quartermate Sampled Concentration Counting L.L.D.+Effluent Cone.·%Effluent
Air Volume Radionuclide IlCi/mL Precision MDCIlCilmL JlCi/mL /lCilmL ConcentrationJlC't1mL
C09070362-003 Il3lU 5.61£-17 N/A N/A 1.00E-16 9.00E-14 6.30£-02
Second Quarter 2009 230n 2.17E-16 3.IOE-17 4.17E-18 1.00E-16 3.00E-14 7.24E-01
Air Volume in mL 22~a 1.5lE-16 1.09E-17 3.29E-18 1.00E-16 9.00E-13 1.68&02
1.25E+1l 210pb 4.41£-15 1.48E-16 1.79E-16 2.00E-15 6.00E-13 7.45E-OI
+LLD's are from Reg.Guide 4.14
'Effluent Concentration from the NEW 10 CFR Part 20 -Appendix B-Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-21D
&&ENERGYLABORATORIES,INC••2.JfJ.JSalt CreekHighway(82601)..P"o.Box.J258 •Casper,WY82602tugrleYlOll-Free888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]
LABONA10NItS
LABORATORY ANALYTICAL REPORT
~.
Client:
Project:
Lab 10:
ClientSample ID:
Denison Mines (USA)Corp
2nd Quarter Air
C09070362-003
BHV-4
Report Date:08/05/09
Collection Date:07/06/09
DateReceived:07/09/09
Matrix:Filter
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date I By
TRACE METALS
Uranium 0.0104 mg/lilter 0.0003 SW6020 07/23/0906:22 I ts
Uranium,Activity 7.1 pCilFilter 0.2 SW6020 07123/09 06:22 Its
RADIONUCLIDES -TOTAL
Lead 210 557 pCilFilter E909.0M 07128/09 08:291dm
lead 210 precision (±)18 pCilFiller E909.0M 07/28/09 08:29 I dm
Lead 210 MDe 22 pCilFilter E909.0M 07128/09 08:291 dm
Radium 226 18.8 pCilFilter E903.0 07123/09 11:41 I trs
Radium 226 precision (±)1.4 pCilFiIler E903.0 07123/09 11 :41 I trs
Radium 226 MDC 0.4 pCilFilter E903.0 07/23/0911:41/1rs
Thorium 230 27 pCI/FiIler E907.0 07131/0915:05 Jdmf
Thorium 230 precision (±)3.9 pCi/FiIler E907.0 07/31/0915:05/dmf
Thorium 230 MDC 0.52 pCi/FiIler E907.0 07131109 15:05/dmf
-------------------------------..,.__.'
Report
Definitions:
Rl -Analyte reporting limit.
QCl -auality control limit.
MDC -Minimum detectable concentration
Mel-Maximum contaminant level.
ND -Notdetectedat the reporting limit.
ENERGYLABORAtORIES,INC.·2393SailCreekHighway(82801)•P.O.Box3258 i Casper,WY82802tgggtlf1Y7011Free888.235.0515c;"307.235.0515 •Fax [phone] •[e-mail]·w.mv.energylab.com·etl@(lfi_tiU4'
HIGH VOLUME AIRSAMPLING REPORT
CLIENT:Denison Mines (USA)Corp
REPORT DATE:August 7,2009
PROJECT:2nd Quarter Air
SAMPLE ID:BHV-S
QuarterlDateSampled Coucentration Counting LL.D.+Efflueot Cone.·%EffiuentRadionuclidePr«ision MOC /lCi/mLAirVolumepCi/mL /lCi/mL pCi/mL flCi/mL Concentration
C09040342-004 narU 4.13E-15 NfA N/A 1.00E-16 9.00E-14 4.59E+00
First Quarter 2009 23lJ.yn 1.39E-15 2.15E-16 7.98E-18 1.00E-16 3.00E-14 4.62E+OO
Air Volume inmL 22~IAIE-15 6.61E-I7 1.54E-17 1.00E-16 9.00E-13 1.56E-OI
1.38E+1 I 21llpb 4.66E-15 1.62E-16 1.99E-16 2.00E-15 6.00B-13 7.76E-01
QuarterlDateSampled Concentration Counting L.LD:EfflueotCone.·%EffluentRadionuclidePrecisionMDC/lCi/mLAirVolume/lei/mL ,.CilmL /lCi/mL /lCi/mL Concentration
C09070362-004 natu 2.31E-16 NfA N/A 1.00£-16 9.00E-14 2.57£-01
Second Quarter 2009 23"rh 7.79E-16 9.81E-17 5.33E-18 1.00E-16 3.00E-14 2.60E+OO
Air Volume in mL 22~6.37E-16 2.12E-17 3.02E-18 1.00E-16 9.00E-13 7.08E-02
1.34E+11 21"pb 4.18E-15 1.38E-16 1.67E-16 2.00E-15 6.00E-13 6.96E-OI
+LLO's are from Reg.Guide 4.14
'Effluent Concentration from the NEW 10 CFR Part20 -Appendix B -Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-21 0
,§ilfN
IGm_p&f@tlli'
ENERGYLABORATORIE$,INC.-2393BaIICreekHighway(82601}-p.o.Box3258 -Casper;WY82802 e
TollFree 888.235.0515 •307.235.0515 •Fax [phone] •casper@energy/ab.com.www.energylab.com .'.!.
LABORATORY ANALYTICAL REPORT
Client:
Project:
LabID:
ClientSample ID:
Denison Mines (USA)Corp
2nd Quarter Air
C09070362-004
BHV-5
Report Date:08/05109
Collection Date:07/06109
DateReceived:07109109
Matrix:Filter
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date1By
TRACE METALS
Uranium 0.0459 mgffllter 0.0003 SW6020 07123/09 06:261 ts
Uranium,Activity 31.1 pCilFilter 0.2 SW6020 07/23/09 06:261 ts
RADIONUCLlDES·TOTAL
Lead 210 561 pCilFilter E909.0M 07/28/0908:29/dm
Lead 210 precision (±)19 pCilFilter E909.0M 07/28/0908:291 dm
Lead 210 MDC 22 pCilFilter E909.0M 07128/0908:29 1dm
Radium 226 85.7 pCilFiHer E903.0 07123/09 11 :41/trs
Radium 226 precision (;1;)2.8 pCilFilter E903.0 07123/09 11:41 1trs
Radium 226 MDC 0.4 pCilFilter E903.0 07/23/0911:41/trs
Thorium 230 105 pel/Filter E907.0 07131/0915:051dmf
Thorium 230 precision (±)13 pCilFilter E9D7.0 07131/0915:05/dmf
Thorium 230 MDC 0.72 pCilFilter E907.0 07131/0915:05/dmf
Report
Definitions:
RL -Analyte reporting limit.
QCl-Quality control limit.
MDe •Minimumdetectableconcentration
MCl-Maximum contaminant level.
ND -Notdetected atthe reporting limit.
ENERGYLABORATORIESr INC.•2393Sa/ICreekHighway (82601),.Ro.Box 3258 .Casper,WY82602IYJ!l{eJW;'Tal/Free 888.235.0515 •307.235.0515 •Fax [phone] •casper@energy/ab.com.www.energy/aiJ.com
Itdt!@l'UiltUi
HIGH VOLUME AIRSAMPLING REPORT
CLIENT:Denison Mines (USA)Corp
REPORT DATE:AugllSt 7,2009
PROJECT:2nd QuarterAir
SAMPLE 10:BHV-6
QuarterlDateSampled Concentration Counting L.L.D.+EffluentCone.·%EffluentRadionudidePrecisionMDC/lCi/mLAirVolume,.CilmL ,.CflmL f.lCi/mL /lCifmL Concentration
C09040342-005 ""u 2.77&15 N/A N/A 1.00E-16 9.00E-14 3.08E+OO
Firs!Quarter 2009 23<>-rb 1.01E-15 1.56E·16 5.92E-18 1.00E-16 3.00E-14 3.38E+OO
Air Volume in mL 22~a 7.82E-16 4.87E-17 1.48E-17 1.00E-16 9.00E-13 8.68E-02
1.36E+11 210pb 6.46E-15 1.77E-16 2.02E-16 2.00E-15 6.00E-13 1.08E+OO
QuarterlDateSampled Concentration Counting L.L.D.+Effluent Cone.·%EffluentRadionuclidePrecisionMDC/lCilmLAirVolumeIlCilmL!lCi/mL flCllmL ,.CilmL Concentration
C09070362-oo5 nalU 1.41E-16 N/A N/A 1.00E-16 9.00E-14 1.56E-01
Second Quarter 2009 23<>-rb 2.67E-16 3.45E-17 3.00E-18 1.00E-16 3.00E-14 8.89E-01
Air Volume in mLs 22~1.81E-16 1.24E-17 3.55E-18 1.00E-16 9.00E-13 2.02E-02
1.16E+11 210pb 5.76E-15 1.67E-16 1.93E-16 2.00E-15 6.00E-13 9.6IE-OI
+LLD's are from Reg.Guide 4.14
"EflIuen!Concentration from the NEW 10 CFR Part 20 -Appendix B •Table 2
Yearfor Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
:.F~
ENERGYLABORATORIES,INC••2393Salt CreekHighway(82601)•P.D.Box3258 .,Casper,WY82602/ggglltOY TollFree 888.235.0515'<307.235.0515 •Fax [phone] •[e-mail] www.energylaiJ.com
LASaRATomES
LABORATORY ANALYTICAL REPORT ';-
Client:
Project:
Lab 10:
ClientSample 10:
Denison Mines (USA)Corp
2nd Quarter Air
C09070362-005
BHV-6
Report Date:08/05/09
Collection Date:07/06/09
OateReceived:07/09/09
Matrix:Filter
MCU
Analyse~Result Units Qualifiers RL QCL Method Analysis DateI By
TRACE METALS
Uranium 0.0241 mglfiller 0.0003 SW6020 07123/09 06:47Its
Uranium,Activity 16.3 pCi/Filter 0.2 SW6020 07/23/0906:47/ts
RAOIONUCLIDES •TOTAL
lead 210 669 pCilFilter E909.0M 07/28/0908:291 dm
lead210 precision (:1:)19 pCilFilter E909.0M 07/28/0908:29/dm
lead210 MOC 22 pCilFilter E909,OM 07128/0908:29/dm
Radium 226 21.1 pCilFilter E903.0 07/23/0911:41/trs
Radium 226 precision (:1:)1.4 pCl/Fiiter E903.0 07/23/0911:41/lrs
Radium 226 MDC 0.4 pCilFilter E903,0 07123109 11:41 Itrs
Thorium 230 31 pCilFilter E907.0 07131/09 15:051 dmf
Thorium 230 precision (:1:)4.0 pCifFilter E907.0 07131/09 15:05 I dmf
Thorium 230 MDC 0,35 pCI/Filter E907.0 07131/09 15:05/dmf
Report
Definitions:
RL -Analyte reportin9 limit.
QCL -Quality control limit.
MOe -Minimum detectable concentration
MCl -Maximum contaminant level.
NO -Not detected at the reporting limit.
ENERGYLABORATORIES,INC.·2998SaltCreekHighway(82601)•AO.Box 8258 •Caspet;WY826'l¥':.[ggfllf'l"jf ToR Free 888.235.0515 •807.285.0515 ';Fax 307.2.J4.1639 •[e-mail]·www.energylab.com')".,
m'ttmt"Ttllllif
HIGH VOLUME AIRSAMPLING REPORT
CLIENT:Denison Mines (USA)Corp
REPORT DATE:August 7,2009
PROJECT:2ndQuarterAir
SAMPLE 10:Blank
QuarterlDateSampled Concentration Counting L.L.D.+EffluentCone.*%Emuent
AirVolume Radionuelide pCilmL Precision MDCJ1CilmL ,.CilmL ,.CilmL Con£entration,.CiJmL
C09040342·006 ""u 9.468-18 N/A N/A 1.00E-16 9.00E-14 1.05E-02
First Quarter2009 23"Th -2.92E-18 5.80E-18 9.17E.I8 1.00E-16 3.00E-14 -9.74E-03
Air Volume in mLs 22~-8.95E-18 7.00E-18 1.53E-17 1.00E-16 9.00E-13 -9.94E-04
1.40E+II 2lOpb -3.33E-17 1.17E-16 1.96E·16 2.00E·15 6.00E-13 -5.54E·03
Note:Thissample uses 140,000,000L ofairvolumefor comparison purposes.
QuarterlDate Sampled Concentration Counting L.L.D.+EffluentCone.*%EffiuentRadioDucJidePrecisionMDCJlCilmLAirVolume,.CilmL J1CilmL ,.Cl/mL pCilmL Conc£ntratioD
C09070362·006 ""u 8.07E-I8 N/A N/A 1.00E·16 9.00E-14 8.96E-03
Second Quarter 2009 23"Th 2.00E-19 2.23E-18 2.19E-18 1.00E·16 3.00E-14 6.68E-04
Air Volume in mLs 22~a 1.I7E-18 1.96E-18 3.09E-18 1.00E-16 9.00E-]3 1.30E-04
1.40E+II 210pb -2.38E-17 9.50E-17 1.59E-16 2.ooE-15 6.00E-13 ·3.96E-03
Note:This sample uses 140,000,000 L ofairvolumefor comparison purposes.
+LLD's are from Reg.Guide 4.14
"Effluent Concentration from the NEW 10 CFR Part 20 •Appendix B -Table 2
Year for Natural Uranium
Year forThorium-230
Week for Radium-226
Day for Lead-21O
ENERGYLABORATORIES,INC.•2393Salt CreekHighway(8260t)•P.D.Box3258 •Casper,WY82602IUgl{!'jI.,TollFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]
«,tBeU&tiiHNi'
LABORATORYANALYTICAL REPORT
Client:
Project:
Lab 10:
ClientSample 10:
Denison Mines (USA)Corp
2nd QuarterAir
C09070362-006
Blank
Report Date:
Collection Date:
DateReceived:
Matrix:
08/05109
07/06109
07/09109
Filter
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date 1By
TRACE METALS
Uranium 0.0017 mg/filter 0.0003 SW6020 07/23109 06:511 Is
Uranium,Activity 1.1 pCifFilter 0.2 SW6020 07/23/0906:51 Its
RADIONUCLlDES·TOTAL
lead 210 -3 pCi/Filter U E909,OM 07128109 08:291 dm
Lead 210 precision (±)13 pCifFilter E909.0M 07128/09 08:29 I dm
lead 210 MDC 22 pCilFilter EOO9.0M 07/28/09 08:291 dm
Radium 226 0.2 pCilFilter U E903.0 07123/09 11:41 1trs
Radium 226 precision (t)0.3 pCilFilter E903.0 07/23109 11:41/trs
Radium 226 MDC 0.4 pCifFilter E903.0 07123/09 11:41 /trs
Thorium 230 0.03 pCilFilter U E907.0 07131109 15:05/dmf
Thorium 230 precision (±l 0.31 pCilFilter E907.0 07/3110915:05 I dmf
Thorium 230 MDC 0.31 pCifFilter E907.0 07/31/0915:05 I dmf
•See Case Narrative regarding Pb2l()analysis.
Report
Definitions:
Rl-Analyte reporting limit.
QCL -Quality control limit.
MDC -Minimum detectable concentration
Mel-Maximum contaminant level.
ND -Not detected at the reporting limit.
U -Not detected at minimum detectable concentration
T ENERGYLASORATORIEG,INC.-289.:J SailCreekHighway(828Otj -P.o.Sox:f.258 •Casper,WY82802~fllfJ7 TollFree 888.2.:J5dJ515 •307.235.0515 •Fax [phone] •casper@energylab.c()[TJ.·www.energylab.com
•ernim4Q!lIIIlY
QAlQC Summary Report
Client:Denison Mines (USA)Corp
Project:2nd Quarter Air
Report Date:08/05/09
Work Order:C09070362
Analyte Count Result Units RL %REC low Limit High limit RPD RPDlimit Qual
Method:E903.0
Sample10:lCS-23035
Radium 226
Sample 10:MB·23035
Radium 226
Radium 226 precision (t)
Radium 226 MDC
Sample 10:TAP WATER·MS
Radium 226
Sample 10:TAP WATER·MSO
Radium 226
Laboratory Control Sample
13.8 pCilFilter
~Method Blank
-0.2 pCi/Filler
0.1 pCi/Fllter
0.4 pCI/Flller
Sample Matrix Spike
14.9 pCi/Fllter
Sample Matrix Spike Duplicate
15.4 pCI/Filter
Run:BERTHOLD 77o.2_090717A
94 70 130
Run:BERTHOLD 77D-2_090717A
Run:BERTHOLD 770-2_090717A
94 70 130
Run:BERTHOLD 77D-2_090717A
~ro 1~3
Batch:RA226-3834
07/23/0913:41
07/23/0913:41
U
07/23/09 13:41
07/23/09 13:41
24.8
Method:E907.0
Sample 10:lCS·23035
Thorium 230
Sample 10:MB-23035
Thorium 230
Thorium 230 precision (t)
Thorium 230 MDC
Laboratory Control Sample
2.58 pCilFilter
~Method Blank
-0.1 pCI/Filter
0.07 pei/Filter
0.1 pei/Filter
Run:EGG·ORTEC_090729A
115 70 130
Run:EGG-ORTEC_090729A
Batch:RA-TH-ISo-0862
08/0110913:07
08/01/09 13:07
U
Sample 10:TAP WATER·M5
Thorium 230
Sample10:TAP WATER·MSO
Thorium 230
Method:E909.0M
Sample 10:C09070362-006AMS
lead210
Sample 10:C09070362-006AMSO
lead 210
Sample 10:MB·R121871
Lead 210
lead 210 precision (t)
Lead 210 MDC
Sample MatriX Spike
2.57 pCi/L
Sample Matrix Spike Duplicate
2.78 pCi/l
Sample Matrix Spike
825 pCI/Flller
Sample MatrixSpike Duplicate
853 pCilFliter
~Method Blank
-2 pCIlFilter
3 pCilFilter
5 pCilFilter
Run:EGG.ORTEC_090729A 08101/09 13:07
103 70 130
Run:EGG·ORTEC__090729A 08/01/09 13:08
111 70 130 8.1 41
Batch:23035
Run:BECKMAN 6100TA_090722A 07/28/09 08:29
77 70 130
Run:BECKMAN 6100TA_090722A 07/28/0908:29
80 70 130 3.3 30
Run:BECKMAN 6100TA_090722A 07128/0908:29
U
Sample 10:LCS·R121871
Lead 210
Laboratory Control Sample
507 pCilFilter
Run:BECKMAN 6100TA_090722A
94 70 130
07128/0908:29
Qualifiers:
RL -Analyte reporting limit.
MOC •Minimum detectable concentration
ND -Not detected at the reporting limit.
U •Not detected at minimum detectable concentration
:h ENERGYLABORATORIES.INC.·2393Sal/CreekHighway(82601)•p.o.Box3258 •Casper,WY82602 ,I,:'.l«:tl{f!!/~701/Free 888.235.0515 •307.235.0515·Fax[phone] •[e-mail] •www.energylab.com ."(.mt44tUlf@IUl'
QAlQC Summary Report
Client:Denison Mines (USA)Corp
Project:2nd Quarter Air
Report Date:08/05/09
Work Order:C09070362
RL %REC Low Limit High Limit
Sample Matrix Spike DupUcate
0.0580 mg/filter 0.00030
Analyte
Method:SW6020
Sample10:LCS2-23035
Uranium
SamplelD:CD9070398-001AMS
Uranium
SamplelD:C09070398-001AMSO
Uranium
Sample10:MB-23035
Uranium
.----.
Result Units
laboratoryControlSample
0.113 mglfilter
Sample Matrix Spike
0.0583 mg/filter
Method Blank
5E-05 mglfilter
0.00030
0.00030
Run:ICPMS2.C_090722B
111 85 115
Run:ICPMS2·C_090722B
103 75 125
Run:ICPMS2-C_090722B
103 75 125
Run:ICPMS4-C_09080SA
RPD RPDLlmit Qual
Batch:23035
07123/0905:12
07/23/09 07:12
07/23/09 07:16
0.4 20
08/05/09 15:26
Qualifiers:
RL -Analyte reporting limit.
MDC •Minimum detectable concentration
NO -Not detected at the reporting limit.
.~
Chain of Custody and Analytical Request Record
2 r?Ul!.)I / I I I } IxJ xl ><J~
5 tSlft!-h I T-rTl//XI><I><.IX
3 131N..4 I ( I J If IX!:><lxJ><
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Y N
I
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Igned Samcle Discosal:Return to Client:Lab Discosal:7/::r //).!-t q.('~
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In certain circumstances,samples submitted to Energy Laboratories,Inc.may besubcontracted to other ~ertified laboratories in order to complete the analysis requested.
This serves as noticeofthis possibility.All sub-contract data will be c~notated on your analytical report.
Visit our web site at www.energylab.cOID for additional information,downloadable fee schedule,forms,and links.
JlUgwq;:mnv
Peri03:January 1,2009 through March 31,2009 (1st Quarter2009)Page 1
BHV-1 onstream %84.5%BHV-1 Total Volume:4.07E+06
Week Filler Start Stop Stop Start Total Total loading,PerCent
W ''lUl'''''''''''Lo'................,...~,..,......•.....'OJ .........".............."..~L..••~,..............-.........--~.........................
1 7820408 5-Jan-Q9 12-J.n-09 4.4678 4.4000 0.0678 9211.7 9042.2 10168.8 10,510,115 0.0065 100.9%36.5
2 7820402 12-Jan-09 19-1.n-09 4.5064 4.4082 0.0982 9380.4 921l.7 10123.2 10,606,313 0.0093 10G.4%37.0
3 7825696 19-Jan-09 26-1an-09 4.7916 4.6293 0.1623 9546.6 9380.4 9975.6 10.451,669 0.0155 99.0%37.0
4 7825690 26-1an-09 2-Fro-09 4.6848 4.6107 0.0741 9546.6 9713.9 -10035.6 (10,514,532)-0.0070 -99.6%37.0
5 7825684 02-Feb-09 9-Feb-09 4.7227 4.6056 0.1171 9885.3 9713.9 10281.6 10,772,272 0.0109 102.0%37.0
6 7825678 09-Feb-09 I6-Feb-09 4.6172 4.5549 0.0623 10052.5 9885.3 10034.4 10,513.275 0.0059 99.5%37.0
7 7825672 16-Feb-09 23-Feb-09 4.7095 4.5906 0.1189 10218.1 10052.5 9934.8 10,380.790 0.0115 98.6%36.9
8 7825666 23-Feb-09 2-Mar-09 4.7I6J 4.5867 0.1294 10384.4 10218.1 9979.8 10,427,810 0.0124 99.0"10 36.9
9 7825660 02-Mar-09 9-Mar-09 4.8615 4.6011 0.2604 10550.7 10384.4 9976.8 10.424,675 0.0250 99.0%36.9
10 7825654 09-Mar-09 16-Mar-09 4.8234 4.5895 0.2339 10743.0 10550.7 11541.6 11,961,675 0.0196 114.5%36.6
11 7825648 16-Mar-09 24-Mar-09 4.9040 4.4732 0.4308 10887.9 10743.0 8688.6 8,955,629 0.0481 75.4%36.4
12 7825642 24-Mar-09 30-Mar-09 4.6909 4.4979 0.1930 11054.5 10887.9 9997.8 10.305,065 0.0187 115.7%36.4
13 7825636 30-Mar-09 6-Apr-09 4.9129 4.5329 0.3800 11223.0 11054.5 10114.8 10,425,660 0.0364 100.3%36.4
Totals 91 2184.0 4.723754 4.544662 0.1791 1107822 115,220,415 0.0164 85.0%36.8
BHV-2 on stream %99.9%BHV-2 Tolal Volume:4.81E+06
Week Filter Start Stop Stop Start Total Total Loadin9,PerCent
"•-.UIIILI<;I'ILJO..:;.LJO...........\J~~I g.,..I ......n,.ow •n ........"........'"......,HI!+,'IIU ......1,....,........,............
1 7820407 0S-Jan-09 12-Jan-09 4.4585 4.3932 0.0653 19402.4 19233.0 10167.0 10.508.254 0.0062 100.9%36.5
2 7820401 12-Jan-09 19-Jan-09 4.4913 4.3932 0.0981 19571.2 19402.4 10126.8 10.610.085 0.0092 100.5%37.0
3 7825695 19-Jan-Q9 26-Jan-09 4.7962 4.6241 0.1721 19737.3 19571.2 9963.6 10.439,096 0.0165 98.8%37.0
4 7825689 26-Jan-09 02-Feb-09 4.7021 4.6079 0.0942 19904.1 19737.3 10009.2 10,486.872 0.0090 99.3%37.0
5 7825683 02-Feb-09 09-Feb·09 4.6615 4.5968 0.0647 20075.5 19904.1 10281.6 10.772.272 0.0060 102.0%37.0
6 7825677 09-Feb-09 16-Feb--09 4.6408 4.5474 0.0934 20242.8 20075.5 10041.6 10.520.819 0.0089 99.6%37.0
7 7825671 16-Feb--09 23-Feb-09 4.7855 4.5941 0.1914 20408.7 20242.8 9955.8 10,402.732 0.0184 98.8%36.9
8 7825665 23-Feb--09 02-Mar·09 4.7746 4.5864 0.1882 20575.2 20408.7 9985.8 10.434,079 0.0180 99.1%36.9
9 7825659 02-Mar-09 09-Mar-09 4.9409 4.6034 0.3375 20741.4 20575.2 9973.8 10.421.540 0.0324 98.9%36.9
10 7825653 Oe-Mar-09 16-Mar-09 4.8925 4.5107 0.3818 20933.7 20741.4 11539.8 11.959,809 0.0319 114.5%36.6
11 7825647 16-Mar-09 24-Mar-Q9 5.0927 4.5165 0.5762 21078.5 20933.7 8685.6 8.952,537 0.0644 75.4%36.4
12 7825641 24-Mar-09 30-Mar-{)9 4.6770 4.4958 0.1812 21245.2 21078.5 9999.6 10,306.920 0.0176 115.7%36.4
13 7825635 30-Mar-09 06-Apr-09 4.8533 4.5095 0.3438 21413.8 21245.2 10119.6 10.430.608 0.0330 100.4%36.4
Totals 91 2184.0 4.7513 4.536846 0.2145 130849.8 136.245.625 0.0209 100.3%36.8
BHV-4 on stream %99.6%BHV-4 Total Volume:4.80E+06
loading,PerCentTolalTotalStartSlop
Tt
StopStart
D
Filter
be
Week
#..I......'II~....-................-.-.........._..........-.~......................-........._..............,..,~""................................
1 7820406 0S-Jan-09 12..Jan-09 4.4345 4.3753 0.0592 9204.6 9037.6 10018.8 10.355.080 0.0057 99.4%36.5
2 7825700 12-Jan·09 19-Jan-09 4.6080 4.6005 0.0075 9373.3 9204.6 10124.4 10,607,570 0.0007 100.4%37.0
3 7825694 19-Jan-Oe 26·Jan-09 4.6129 4.6107 0.0022 9540.6 9373.3 10038.6 10.517.676 0.0002 99.6%37.0
4 7825688 26-Jan-09 02-Feb-09 4.6747 4.6128 0.0619 9705.5 9540.6 9892.8 10,364.917 0.0060 98.1%37.0
5 7825682 02·Feb--09 09--Feb--09 4.6971 4.5988 0.0983 9875.3 9705.5 10191.0 10.677,349 0.0092 101.1%37.0
6 7825676 09--Feb-09 16-Feb-09 4.6363 4.5854 0.0509 10042.5 9875.3 10029.6 10.508.246 0.0048 99.5%37.0
7 7825670 16-Feb-09 23-Feb-09 4.7043 4.6005 0.1038 10210.5 10042.5 10080.6 10.533.135 0.0099 100.0%36.9
8 7825664 23--Feb-09 02-Mar-09 4.6858 4.5783 0.1075 10378.8 10210.5 10096.2 10.549.435 0.0102 100.2%36.9'
9 7825658 02-Mar-09 09-Mar-09 4.7904 4.5785 0.2119 10545.2 10378.8 9984.0 10,432.198 0.0203 99.0%36.9
10 7825652 09-Mar-09 16-Mar-09 4.7686 4.5175 0.2511 10737.3 10545.2 11529.6 11.949,238 0.0210 114.4%36.6
11 7825646 16-Mar-09 24-Mar-09 4.9335 4.5242 0.4093 10879.1 10737.3 8506.8 8,768,241 0.0467 73.8%36.4
12 7825640 24-Mar-09 30-Mar-09 4.7438 4.5283 0.2155 11049.2 10879.1 10204.8 10.518,426 0.0205 118.1%36.4
13 7825634 3D-Mar-09 06--Apr-{)9 4.7895 4.5204 0.2691 11213.4 11049.2 98502 10.152.928 0.0265 97.7%36.4
Totals 91 2184.0 4.698415 4.556246 0.1422 130547.4 135.934.441 0.0140 100.1%36.8
BHV-5 onstream %99.7%BHV.5 Total Volume:4.80E+06
Week Filtar Start SlOp Stop Start Total Total Loading.Per Cenl...,.........""',.........~.........................."'.;<>................."IJI~........'Ull......."...,.."•"HoI",..,.....,....u"".................nl
1 7820405 05·Jan-Q9 12-Jan-09 4.4871 4.3877 0.0994 19466.2 19299.0 10031.4 10.368.103 0.0096 99.5%36.5
2 7825699 12-Jan-09 19-Jan-09 4.7765 4.6269 0.1496 19635.1 19466.2 10131.6 10.615,114 0.0141 100.5%37.0
3 7825693 19-Jan-09 26-Jan-09 4.8169 4.6119 0.2050 19802.2 19635.1 10030.2 10.508.875 0.0195 99.5%37.0
4 7825687 26·Jan-09 02-Feb-09 4.7615 4.6221 0.1394 19968.6 19802.2 9979.8 10,456.069 0.0133 99.0%37.0
5 7825681 02-Feb-09 09-Feb--09 4.7689 4.6056 0.1633 20138.4 19968.6 10192.8 10.679.234 0.0153 101.1%37.0
6 7825675 09-Feb-09 16-Feb-09 4.6743 4.5851 0.0892 20305.5 20138.4 10026.6 10,505,103 0.0085 99.5%37.0
7 7825669 16-Feb-09 23-Feb-09 4.7464 4.5906 0.1558 20472.8 20305.5 10036.8 10.487,369 0.0149 99.6%36.9
8 7825663 23--Feb-09 02-Mar-Q9 4.7519 4.5722 0.1797 20641.1 20472.8 10095.6 10.548,808 0.0170 100.2%36.9
9 7825657 02-Mar-09 09-Mar·09 4.7881 4.5774 0.2107 20807.7 20641.1 9994.2 10.442.856 0.0202 99.1%36.9
10 7825650 09-Mar-09 16-Mar-09 4.7063 4.4957 0.2106 20999.7 20807.7 11523.0 11.942,398 0.0176 114.3%36.6
11 7825645 16-Mar-09 24-Mar-09 4.9290 4.5443 0.3847 21141.7 20999.7 8516.4 8.778.136 0.0438 73.9%36.4
12 7825639 24-Mar-09 30-Mar-09 4.7976 4.4928 0.3048 21311.6 21141.7 10192.8 10.506.058 0.0290 118.0%36.4
13 7825633 3D-Mar-09 06-Apr-09 4.9777 4.5192 0.4565 21476.1 21311.6 9875.4 10,178.903 0.0450 98.0%36.4
Totals 91 2184.0 4.767862 4.556269 0.2116 130626.6 136.017,026 0.0206 100.2%36.8
'.;:
Period:January1,2009 through March 31,2009 (1st Quarter 2009)Page 2
BHV-6 on stream%99.7%BHV-6 Total Volume:4.80E+06
Week Filter Start Stop Slop Start Total Total Loading.Per Cent....""...~....-_.-_....--.-...........-.-.-.~~.......-.....-..-..-_.__.,.........--..-~.__...-_....
1 7820404 05-Jan-09 12-Jan-09 4.4494 4.3734 0.0760 19114.4 18947.5 10019.4 10.355,700 0.0073 99.4%36.5
2 7825698 12-Jan-09 19-Jan-09 4.7164 4.6203 0.0961 19283.3 19114.4 10128.6 10,611,971 0.0091 100.5%37.0
3 7825692 19-Jan-09 26-Jan-09 4.7611 4.6171 0.1440 19450.5 19283.3 10033.8 10.512,646 0.0137 99.5%37.0
4 7825686 26-Jan-09 02-Feb-09 4.6657 4.6010 0.0647 19616.5 19450.5 9963.6 10,439,096 0.0062 98.8%37.0
5 7825680 02-Feb-09 09-Feb-09 4.7175 4.6019 0.1156 19786.4 19616.5 10192.8 10,679,234 0.0108 101.1%37.0
6 7825674 OS-Feb-09 16-Feb-09 4.6623 4.5889 0.0734 19953.6 19786.4 10027.8 10,506,360 0.0070 99.5%37.0
7 7825668 16·Feb-09 23·Feb-09 4.7197 4.5886 0.1311 20121.1 19953.6 10052.4 10,503.669 0.0125 99.7%36.9
8 7825662 23-Feb-09 02-Mar-09 4.7235 4.5927 0.1308 20289.4 20121.1 10097.4 10.550,689 0.0124 100.2%36.9
9 7825656 02-Mar-09 OS-Mar-09 4.7601 4.5772 0.1829 20455.9 20289.4 9990.6 10,439,095 0.0175 99.1%36.9
10 7825651 09-Mar-09 16-Mar-09 4.7849 4.4690 0.3159 20648.0 20455.9 11528.4 11,947,995 0.0264 114.4%36.6
11 7825644 16-Mar-09 24-Mar-09 4.8895 4.5251 0.3644 20789.9 20648.0 8511.6 8,773,189 0.0415 73.9%36.4
12 7825638 24-Mar-09 3O-Mar-09 4.6531 4.4825 0.1706 20959.9 20789.9 10197.6 10,511,005 0.0162 118.0%36.4
13 7825632 3D-Mar-09 06-Apr-09 4.8012 4.5217 0.2795 21124.3 20959.9 9864.6 10,167,771 0.0275 97.9%36.4
Totals 91 2184.0 4.715723 4.560723 0.1650 130608.6 135.998,420 0.0160 100.2%36.8
ALL BHV on stream %96.7%
Net
Stop
Date
Start
Date
Week
#Blanks --"".-...."".........,
1 7820403 05-Jan-09 12-Jan-09 4.3665
2 7825697 12-Jan-09 19-Jan-09 4.6186
3 7825691 19-Jan-09 26-Jan-09 4.6060
4 7825685 26-Jan-09 02-Feb-09 4.6189
5 7825679 02-Fel>-09 09-Fel>-09 4.5989
6 7825673 09-Feb-09 16-Feb-09 4.5909
7 7825667 16-Fel>-09 23-Feb-09 4.5727
8 7825661 23-Feb-09 o2-Mar-09 4.5828
9 7825655 02-Mar-D9 09-Mar·09 4.5693
10 7825649 0S-Mar-09 16-Mar-09 4.4737
11 7825643 16-Mar-09 24-Mar-09 4.4917
12 7825637 24-Mar-09 3D-Mar·09 4.5205
13 7825631 3D-Mar-09 06-Aor-09 4.4876
Totals 91 2184.0 4.5460
Energy Laboratories Inc
Workorder Receipt Checklist
Denison Mines (USA)Corp
1~111~1111~11~111~11~II~ijl~~
C09040342
Login completed by:Kimberly Humiston
Reviewed by:
Reviewed Date:
Date and Time Received:4/9/2009 9:30 AM
Received by:pb .
Carrier name:2nd Day Air
Shipping container/cooler in good condition?
Custody seals intacton shipping containerfcooler?
Custodyseals intact on sample bottles?
Chain of custody present?
Chain ofcustody signed when relinquished and received?
Chain ofcustody agrees with sample labels?
Samples in proper containerlbottle?
Sample containers intact?
Sufficient sample volume for indicated test?
All samples received within holding time?
ContainerfTemp Blank temperature:
Water·VOA vials have zero headspace?
Water-pH acceptable upon receipt?
Yes 0'
Yes 0'
Yes 0
Yes 0'
Ves 0'
Yes 0'
Yes 0'
Yes [0
Yes [0
Yes [0
NfA"C
Yes 0
Yes 0
~D
~D
~D
~D
~D
~D
~D
~D
~D
~D
No 0
No 0
Not Present 0
Not Present 0
Not Present 0'
No VOA vials submitted [0
Not Applicable 0'
------------------------------------------------------------------.-._------------------------------------------.------------------_.-----------.-------------------------------------------------------------------------.------------------------------------~--
Contact and Corrective Action Comments:
None
liNt.«'ttltlMffftltl"
ENERGYLABORATORIESr INC••2393Salt CreekHighway(82601)·Ro.Box3258 •Casper,WY82602
70/1Free 888.235.0515 .'307.235.0515 •Fax [phone] •casper@energy/ab.com •www.energy/ab.com
CLIENT:Denison Mines (USA)Corp
Project:1st Quarter Air
Sample Delivery Group:C09040342
ORIGINAL SAMPLE SUBMITTAL(S)
All original sample submittals have been returned with the data package.
Date:14-May-09
CASE NARRATIVE
SAMPLE TEMPERATURE COMPLIANCE:4°C (±2°C)
Temperature ofsamples received may not be considered properly preserved by accepted slandards.Samples that are hand
delivered immediately after collection shall be considered acceptable ifthere is evidence that the chilling process has begun.
GROSS ALPHA ANALYSIS
Method 900.0 for gross alpha and gross beta is intended as a drinking water method for lowTDS waters.Data provided by
this method for non potable waters should be viewed as inconsistent.
RADON IN AIR ANALYSIS
The desired exposure time is 48 hours (2 days).The time delay in returning the canister to the laboratory for processing
shOUld be as short as possible to avoid excessive decay.Maximum recommended delay between end of exposure to
beginning of counting should not exceed 8 days.
SOIUSOLlD SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE,SIMAZINE AND PCB ANALYSIS USING EPA 505
Data for Atrazine and Simazine are reported from EPA 525.2,not from EPA 505.Data reported by ELI using EPA method
505 reflects the results for seven individual Aroclors.When the results for all seven are ND (not detected),the sample
meets EPA compliance criteria for PCB monitoring.
SUBCONTRACTING ANALYSIS
SUbcontracting of sample analyses to an outside laboratory may be required.Ifso,ENERGY LABORATORIES will utilize its
branch laboratories or qualified contract laboratories for this service.Any such laboratories will be indicated within the
Laboratory Analytical Report.
BRANCH LABORATORY LOCATIONS
eli-b -Energy Laboratories,Inc.-Billings,MT
eli..g-Energy Laboratories,Inc Gillette,Wf
eli-h -Energy Laboratories,Inc Helena,MT
eli-r -Energy Laboratories,Inc Rapid City,SD
eli-t -Energy Laboratories,Inc College Station,TX
CERTIFICATIONS:
USEPA:Wf00002,Radiochemical Wf00937;FL..DOH NELAC:E87641 ,Radiochemical E871017;Califomia:02118CA;
Oregon:
Wf200001;Utah:3072350515;Virginia:00057;Washington:C1903
ISO 17025 DISCLAIMER:
The results of this Analytical Report relale only to the items SUbmitted for analysis.
ENERGY LABORATORIES,INC...CASPER,Wf certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities.Some results requested by the client may not be covered
under these certifications.All analysis data to be submitted for regulatory enforcement should be certified in the sample
state of origin.Please verify ELI's certification coverage by visiting www.energylab.com
ELI appreciates the opportunity to provide you with this analytical service.For additional information and services visit our
web page www.energylab.com.
THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT
~:~~
:;.:
Period:March 31,2009 through June30,2009 (2nd Quarter 2009)Page 1
BHV-1 on stream %100,0%BHV-1 TotalVolume:4,82E+06
Week Fitter Start Slop Slop Start Total Total Loading,PerCenf.l'lIUlllL..J<:;:a IIJU~y ............'".......................................,..............."'"............._.............,.,-",...............................
I 7825630 6-Apr-<J9 13-Apr-09 4.6924 4.4729 0.2195 11394.5 11223.0 10286.4 10,631,662 0.0206 102.0%36.5
2 7825624 I3-Apr-G9 2Q-Apr-09 5.3708 4.5190 0.8518 11562.4 1I394.5 10077.0 10,557.908 0.0807 100.0%37.0
3 7825618 20-Apr-09 27-Apr-G9 4.9544 4.5530 0.4014 11730.0 11562.4 10053.0 10,532,763 0.0381 99.7%37.0
4 7825612 27-Apr-09 4-May-09 4.7809 4.5240 0.2569 11895.2 11730.0 9911.4 10.384,405 0.0247 98.3%37.0
5 7825606 04-May-<J9 ll-May-Gg 4.6720 4.5174 0.1546 12065.5 11895.2 10220.4 10,708,152 0.0144 101.4%37,0
6 8154099 ll-May-<J9 18-May-<J9 4.7475 4.5180 0.2295 12233.8 12065.5 10101.0 10,583,053 0.0217 100.2%37,0
7 8154093 18-May-<J9 25-May-<J9 4.9345 4.5380 0.3965 12422.8 12233.8 11337.0 1I,845,937 0.0335 112.5%36.9
8 8154087 2S-May-09 I-Jun-D9 4.7022 4.5288 0.1734 12570.2 12422.8 8845.8 9.242,903 0.0188 87.8%36.9
9 8154081 01-Jun-<J9 8-Jun-09 4.7559 4.5164 0.2395 12734.2 12570.2 9838.8 10,280,480 0.0233 97.6%36,9
10 8154075 08-Jun-09 15-Jun-<J9 4.6751 4.4592 0.2159 12902.3 12734.2 10086.6 10,453,718 0.0207 100.1%36.6
11 8154069 15-Jun-D9 22-Jun-<J9 4.6833 4.4784 0.2049 13069.0 12902.3 10002.6 10,310,012 0.0199 99.2%36.4
12 8154063 22-Jun-D9 29-Jun-<J9 4.6507 4.4950 0.1557 13238.0 13069.0 10138.8 10,450,398 0.0149 100.6%36.4
13 8154057 29-Jun-<J9 6-Jul-<J9 4.6711 4.4908 0.1803 13406.5 13238.0 10112.4 10,423.187 0.0173 100.3%36.4
Totals 91 2184.0 4.7916 4.508531 0.2831 131011.2 136,404,577 0.0268 100.0%36,8
BHV-2 onstream %100.0%BHV·2 Total Volume:4.82E+06
Week Filter Start Stop Slop Slart Tolal Tolal Loading,PerCent
....................-..........-~.-._--._......~~......-........-....-_.-.-................_.'--..'__••n
1 7825629 06·Apr.Q9 13-Apr-09 4.7346 4.4719 0.2627 21584.7 21413_8 10252.8 10,596,934 0.0248 101.7%36.5
2 7825623 13-Apr-09 20·Apr-OS 5.1952 4.5043 0.6909 21753.2 21584.7 10110.0 10.592,483 0.0652 100.3%37.0
3 7825617 20-Apr-09 27-Apr-09 4.9327 4.5256 0.4071 21920.3 21753.2 10024.8 10,503,217 0.0388 99.5%37.0
4 7825611 27-Apr-09 04-May-09 4.8579 4.5277 0.3302 22085.1 21920.3 9891.6 10.363.660 0.0319 98.1%37.0
5 7825605 04-May-G9 11-May-G9 4.8886 4.4854 0.4032 22256.4 22085.1 10274.4 10,764,729 0.0375 101.9%37.0
6 8154098 l1-May.QS 18-May-09 5.0677 4.5164 0.5513 22424.3 22256.4 10075.2 10,556,022 0.0522 100.0%37.0
7 8154092 18-May'OS 25-May-09 4.S916 4.5061 0.4857 22613.7 22424.3 11362.2 11,872,268 0.0409 112.7%36.9
8 8154086 25-May·09 01-Jun-09 4.7096 4.5112 0.1984 22761.3 22613.7 8857.2 9,254,814 0.0214 87.9%36,9
S 8154080 01-Jun-09 08-Jun·09 4.7640 4.4929 0.2711 22924.5 22761.3 9793.&10,233,460 0.0265 97.2%36.9
10 8154074 08-Jun-09 15-Jun·09 4.7877 4.4952 0.2925 23092.7 22924.5 1009(}.2 10,457,449 0.0260 100.1%36.6
11 8154068 15-Jun-09 22-Jun-09 4.8279 4.4733 0.3546 23259.8 23092.7 10029.0 10,337,224 0.0343 99.5%36.4
12 8154062 22-Jun-oS 29.Jun-Q9 4.7010 4.4649 0.2361 23426.8 23259.8 10138.8 10,450,398 0.0226 100.6%36.4
13 8154056 29-Jun-Q9 06-Jul-G9 4.7974 4.4862 0.3112 23597.4 23428.8 10114.2 10,425,042 0.0299 100.3%36.4
Totals 91 2184.0 4.865654 4.497008 0.3688 131014.2 136,407,700 0.0349 100.0%36.8
BHV-4 onstream %91.4%BHV·4 Total Volume:4.4OE+06
Week Filter Start Stop Stop Start Total Total loading,PerCent
"........~..............................._.-.......""............................................'"......~........_......,...._.n.
1 7825628 06-Apr-09 13·Apr-OS 4.7055 4.4997 0.2058 11378.3 11213.4 9899.4 10,231,673 0.0201 98.2%36.5
2 7825622 13-Apr·09 20-Apr-Q9 5.3665 4.5120 0.8545 11532.6 11378.3 9256.8 9,698,665 0.0881 91.8%37.0
3 7825616 2O-Apr-09 27-Apr-09 4.8209 4.5027 0.3182 11693.9 11532.6 %73.8 10,135,466 0.0314 96.0%37.0
4 7825810 27-Apr·09 04-May-09 4.7778 4.5149 0.2627 11798.0 11893.9 6250.2 6,548,480 0.0401 62.0%37.0
5 7825604 04-May-09 l1-May-09 4.5805 4.4770 0.1035 11872.6 11798.0 4476.0 4,689,610 0.0221 44.4%37.0
6 8154097 l1-May-09 18-May-G9 4.8198 4.5314 0.2864 12040.6 11872.6 10075.8 10,556,651 0.0273 100.0%37.0
7 8154091 18-May-09 25-May-D9 4.9659 4.5088 0.4571 12229.5 12040.6 11338.8 11,847,817 0.0386 112.5%36.9
8 8154085 25-May-09 01-Jun-09 4.7400 4.4933 0.2467 12377.6 12229.5 8886.6 9,285,534 0.0266 88.2%36.9
9 8154079 01-Jun-09 08-Jun·OS 4.7253 4.4883 0.2370 12535.7 12377.6 9481.8 S,907,454 0.0239 94.1%36.9
10 8154073 OB-Jun-09 15.Jun-G9 4.6889 4.4876 0.2013 12703.6 12535.7 10077.6 10.444,390 0.0193 100.0%36.6
11 8154067 15·Jun-09 22-Jun-G9 4.6567 4.5081 0.1486 12871.1 12703.6 10049.4 10,358,251 0.0143 99.7%36.4
12 8154061 22-Jun·09 29-Jun-D9 4.6433 4.5030 0.1403 13039.8 12871.1 10121.4 10.432,463 0.0134 100.4%36.4
13 8154055 29-Jun-09 06-Jul-09 4.6219 4.4583 0.1636 13208.5 13039.8 10122.6 10.433,700 0.0157 100.4%36.4
Totals 91 2184.0 4.m906 4.498854 0,2791 119710.2 124,570,055 0.02!}3 91.4%36.8
'.~.
BHV-5 onstream 0/0 98.5%BHV-5 Tolal Volume:4.75E+06
Week Filter Start Stop Slop Start Tolal Tolal loading,Per Cent.~_..,-_.-_.--_.------._.-.-_......-.....-.....-_.._.-....'.-~.._.--_.-,--.,-,
1 7825627 06·Apr·09 13-Apr-G9 4.7530 4.5267 0.2263 21641.0 21476.1 9889.2 10,221,130 0,0221 98.1%36.5
2 7825621 13-Apr-09 2O·Apr-D9 5.5247 4.5206 1.0041 21795.2 21641.0 9255.6 9,697,308 0.1035 91.8%37.0
3 7825615 20-Apr-GS 27·Apr·09 4.9668 4.5145 0.4523 21956.4 21795.2 9673.2 10,134,837 0.0446 96.0%37.0
4 7825609 27-Apr-D9 04-May-09 4.7763 4.5195 0.2568 22125.2 21956.4 10124.4 10,607,570 0.0242 100,4%37.0
5 7825603 04-May-09 l1-May-09 4.8622 4.4878 0.3744 22292.0 22125.2 10011.0 10,488,758 0,0357 99.3%37.0
6 8154096 11-May-09 18.May-G9 5.1837 4.5039 0.6798 22460.1 22292.0 10083.6 10,564,823 0,0643 100.0%37.0
7 8154090 18-May·09 25-May-G9 5.0869 4.5086 0.5783 22649.4 22460.1 11357.4 11,867,252 0.0487 112.7%36.9
8 8154084 25·May-G9 01-Jun-G9 4.7508 4.5136 0.2372 22796.9 22649.4 8850.6 9,247,918 0.0256 87.8%36,9
9 8154078 01-Jun-09 08-Jun-oS 4.7909 4.5066 0,2843 22955.1 22796.9 9491.4 9,917,485 0.0287 94.2%36.9
10 8154072 08-Jun-09 15-Jun-09 4.7011 4.4609 0.2402 23123.5 22955.1 10104.0 10,471,751 0.0229 100.2%36.6
11 8154066 15-Jun-09 22-Jun-G9 4.6824 4.4752 0.2072 23290.6 23123.5 10025.4 10,333,513 0.0201 99.5%36.4
12 8154060 22-Jun-09 2S-Jun-09 4.6600 4.4916 0.1684 23459.2 23290.6 10120.2 10,431,226 0.0161 1004%36.4
13 8154054 2S-Jun-09 06.Jul-G9 4.6755 4.4911 0.1844 23627.7 23459.2 10106.4 10,417,002 0.0177 100.3%36.4
Totals 91 2184.0 4.878023 4,501585 0,3764 7797800 129092.4 134,400,575 0,0365 98.5%36.8
Period;March 31,2009 through June 30,2009 (2nd Quarter2009)Page 2
BHV·6 on stream %85.1%BHV-6 Tolal Volume:4.10E+06
Week Filler Start Stop Stop Start Total Total Loading,Per Cent
"'.....'110..............<;.l,..,.....U.L.........'J'oI'>.iJI .....,....".....,,,,,..."".~1.II.v ~,.....,."'M""'"........................................YO
1 7825626 06-Apr-09 13-Apr·09 4.5647 4.5520 0.0127 21288.9 21124.3 9880.8 10,212,448 0.()()12 98.0%36.5
2 7825620 13--Apr..Q9 20·Apr-09 4.5371 4.5081 0.0290 21442.1 21288.9 9187.2 9,625,644 0.0030 91.1%37.0
3 7825614 20-Apr-09 27-Apr-09 4.5229 4.4996 0.0233 21603.8 21442.1 9702.6 10,165,640 0.0023 96.3%37.0
4 7825608 27-Apr'09 04-May-09 4.6639 4.5169 0.1470 21770.4 216Q3.8 1ססOO.2 10,477,443 0.0140 QQ.2%37.0
5 7825602 04-May-OQ ll-May-OQ 4.7742 4.5152 0.2590 21877.7 21770.4 6433.2 6,740,214 0.0384 63.8%37.0
6 8154095 11·May..Q9 18-May-09 4.8805 4.5146 0.3659 22044.5 21877.7 10009.2 10,486,872 O.034Q 99.3%37.0
7 8154089 18·May..Q9 25-May..Q9 4.Q16Q 4.5093 0.4067 22233.0 22044.5 11309.4 11,817,098 0.0344 112.2"10 36.9
8 8154083 2S-May..QQ 01-Jun..Q9 4.7009 4.5041 0.1968 22233.0 22233.0 0.0 0 #DIV/Ol 0.0%36.9
9 8154077 01-Jun-OQ 08-Jun-OQ 4.7216 4.4938 0.2278 141,3 0.0 8476,2 8,856,711 0,0257 84.1%36.9
10 8154071 08-Jun-09 15.Jun-09 4.6995 4.4903 0.2092 30Q.3 141.3 10078.8 10,445,634 0.0200 100.0%36.6
11 8154065 15.Jun-OQ 22.Jun..QQ 4.6676 4.4758 0.1918 476-7 309.3 10049.4 10,358,251 0.0185 99.7%36.4
12 8154059 22·Jun..Q9 29·Jun..Q9 4.6296 4.4831 0.1465 645.4 476.7 J0120.8 10,431,845 0.0140 100.4%36.4
13 8154053 29-Jun-09 06-Jul·09 4.6059 4.4819 0.1240 749.1 645.4 6220.8 6,411,985 0.0193 61.7%36.4
Totals 91 2184.0 4.683415 4.503438 0.1800 111468.6 116,029,765 #Dlv/Ol 85.1%36.8
ALLBHVon stream %95.0%....,..
Net
Stop
Date
Start
Date
Week
#Blanks ....~.>J ...................
1 7825625 06-Apr·09 13-Apr..Q9 4.5637
2 7825619 13-Apr·09 20-Apr..Q9 4.5223
3 7825613 2O·Apr-09 27-Apr-09 4.5024
4 7825607 27·Apr·09 04·May-09 4.5185
5 7625601 04-May..QQ 11-May..Q9 4.5320
6 8154094 ll-May..Q9 18-May..QQ 4.5269
7 8154088 18-May-09 25-May..Q9 4.5014
8 8154082 25-May-09 01-Jun..Q9 4.5026
9 8154076 01-Jun..Q9 08-Jun..Q9 4.4632
10 8154070 08-Jun-09 15·Jun-Q9 4.5020
11 8154064 15-Jun..Q9 22-Jun..Q9 4.4983
12 8154058 22.Jun..Q9 29.Jun..Q9 4.4748
13 8154052 29·Jun..QQ 06-Jul..Q9 4.4634
Totals 91 2184.0 4.5070
Energy Laboratories Inc
Workorder Receipt Checklist
Denison Mines (USA)Corp
Login completed by:Corinne Wagner
Re~ewedby:
Re\iewed Date:
1~11~1~~~~I~llmll~I~~
C09070362
Date and lime Received:7/9/20099:20 AM
Received by:ckw
Carrier name:Next Day Air
Shipping container/coolerin goodcondition?Yes 0 C'bD Not A"esent 0
Custody seals intact on shippingcontainer/cooler?Yes 1{1 NoD Not A"esent 0
CUstody seals intact on sarrple boWes?Yes 0 NoD Not A-esent 0
Dlainofcustodypresent?Yes 0 t\bD
Chain ofcustody signed w hen relinquished andreceived?Yes 0 NoD
Olainofcustody agrees with sarrple labels?Yes 0 t\bD
Sarrples in proper containerlboltle?Yes 0 t\bD
Sarrple containers intact?Yes 0 NoD
SuffICientsarrple \/olurre forindicated test?Yes 0 C'bD
Allsarrples receilled withinholding tirre?Yes 1{1 NoD
ContainerfTerrp Blank terrperature:NIA'C
Water -VOA vials havezero headspace?Ves 0 NoD C'b VOA vials subnilled I{I
Water-pHacceptable uponreceipt?Yes 0 NoD r-J:lt Applicable 0
Contact and Correctille Action Corrments:
None
ENERGYLABORATORIES,INC.';2393SaH CreekHighway (82601)•Po.Box 3258 •Casper,WY82602
Toll Free 888235.0515 •307.235.0515"Fax [phone] •casper@energy/ab.com.www.energy/ab.comf;'-'lIJl!,ifl(-----------------------------
CLIENT:Denison Mines (USA)Corp
Project:2nd Quarter Air
Sample Delivery Group:C09070362
Date:07-Aug-09
CASE NARRAriVE
PB210 ANALYSIS
The MDC for Pb-21 0 per RG 4.14 is 1 pCi/L.The current technique can achieve an MDC of about 2 pCi/L to 5 pCilL ifwe
have sufficient sample to process 1.0 L,and this is reported on a sample specific basis.Please consult with your local
regulatory agency prior to using these results for compliance purposes.
ORIGINAL SAMPLE SUBMlnAl(S)
All original sample submittals have been returned with the data package.
SAMPLE TEMPERATURE COMPLIANCE:4°C (±20 G)
Temperature of samples received may not be considered properly preserved by accepted standards.Samples that are hand
delivered immediately after collection shall be considered acceptable ifthere is evidence that the chilling process has begun.
GROSS ALPHA ANALYSIS
Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters.Data provided by
this method for non potable waters should be viewed as inconsistent.
RADON IN AIR ANALYSIS
The desired exposure time is 48 hours (2 days).The time delay in returning the canister to the laboratory for processing
should be as short as possible to avoid excessive decay.Maximum recommended delay between end ofexposure to
beginning of counting should not exceed 8 days.
SOIUSOLlD SAMPLES
All samples reported on an as received basis unless otherwise Indicated.
ATRAZINE,SIMAZINE AND PCB ANALYSIS USING EPA 505
Data for Atrazine and Simazine are reported from EPA 525.2,not from EPA 505.Data reported by ELI using EPA method
505 reflects the resulls for seven individual Aroclors.When the results for all seven are ND (not detected),the sample
meets EPA compliance criteria for PCB monitoring.
SUBCONTRACTING ANALYSIS
SUbcontracting ofsample analyses to an outside laboratory may be required.If so,ENERGY LABORATORIES will utilize its
branch laboratories or qualified contract laboratories for this service.Any such laboratories will be indicated within the
Laboralory Analytical Report.
BRANCH LABORATORY LOCATIONS
eli-b -Energy Laboratories,Inc.-Billings,MT
eli-g -Energy Laboratories,Inc.-Gillette,WY
eli-h -Energy Laboratories,Inc.-Helena,MT
eli-r -Energy Laboratories,Inc.•Rapid City,SD
eli-t -Energy Laboratories,Inc.-College Station,TX
CERTIFICATIONS:
USEPA:WY00002,Radiochemical WY00937;FL-DOH NELAC:E87641,Radiochemical E871017;California:02118CA;
Oregon:WY200001;Utah:3072350515;Virginia:00057;Washington:C1903
ISO 17025 DISCLAIMER:
The results ofthis Analytical Report relate only to the items submitted for analysis.
ENERGY LABORATORIES,INC.-CASPER,WY certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities.Some results requested by the client may not be covered
under these certifications.All analysis data to be submitted for regulatory enforcement should be certified in the sample
state of origin.Please verify ELI's certification coverage by visiting www.energylab.com
ELI appreciates the opportunity to provide you with this analytical service.For additlonallnformation and services visit our
web page www.energylab.com.
THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT
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White Mesa Mill First Quarter 2009 Environmental Spherical Gamma Monitor Results
Mean
Total Days Ambient
Badge Date Date Badge at Dose mRem/mRem/ mRem/
Number Location Issued Returned WMM Equivalent hour Day Week
Control linistration \.118/2009 4/712009 89 36.9 0.02 0.415 2.90
1 )5 Control R 11812009 4/712009 89 54.7 0.03 0.615 4.30
2 BHV-6 1/812009 4/7/2009 89 34.3 0.02 0.385 2.70
3 Jr.-MolycOi 118/2009 4/7/2009 89 712.8 0.33 8.009 56.06
4 ldium Precip.118/2009 4/7/2009 89 88.5 0.04 0.994 6.96
5 )cake Drying 1/812009 4/712009 89 156.3 0.07 1.756 12.29
6 Leach 11812009 4/7/2009 89 264.6 0.12 2.973 20.81
7 Mill Control 11812009 4/712009 89 402.9 0.19 4.527 31.69
8 !Iowcake Pre,11812009 4/712009 89 105.5 0.05 1.185 8.30
9 ral Control I<1/812009 4/712009 89 78.5 0.04 0.882 6.17
10 leI Screen (0 1/812009 41712009 89 233.1 0.1 I 2.619 18.33
11 IDumpingS 11812009 4/7/2009 89 450.1 0.21 5.057 35.40
12 Met.Lab 11812009 41712009 89 66 0.03 0.742 5.19
13 tef Press ROI 11812009 4/7/2009 89 193.2 0.09 2.171 15.20
14 BHV-l 11812009 4/712009 89 42.5 0.02 0.478 3.34
15 BHV-2 11812009 4/7/2009 89 35.4 0.02 0.398 2.78
16 BHV-3 118/2009 4/7/2009 89 33.4 0.02 0.375 2.63
17 BHV-4 118/2009 4/7/2009 89 30.6 0.01 0.344 2.41
18 BHV-5 1/812009 4/712009 89 35.1 0.02 0.394 2.76
19 SAG Mill 118/2009 4/7/2009 89 267.6 0.13 3.007 21.05
20 Tails 118/2009 4/7/2009 89 146.5 0.07 1.646 11.52
21 CCD 118/2009 4/712009 89 88 0.04 0.989 6.92
22 North SX 1/812009 4/712009 89 59.8 0.03 0.672 4.70
23 nistration Bu 118/2009 4/712009 89 41.2 0.02 0.463 3.24
24 min Parking 11812009 4/7/2009 89 97.1 0.05 1.091 7.64
25 Jwcake Pack;11812009 4/7/2009 89 308.7 0.14 3.469 24.28
26 lowcake StOI 118/2009 4/7/2009 89 244.4 O.II 2.746 19.22
27 lucking Roar 11812009 4/7/2009 89 164.7 0.08 1.851 12.95
28 ill Lunch Ro<118/2009 4/7/2009 89 63.2 0.03 0.710 4.97
29 South SX 1/812009 417/2009 89 222.1 0.10 2.496 17.47
30 e.Super.'s 0 1/812009 41712009 89 52.6 0.02 0.591 4.14
31 ,'e Feed Grizl 11812009 41712009 89 390.3 0.18 4.385 30.70
32 Scalehouse 118/2009 41712009 89 196.4 0.09 2.207 15.45
33 Iple Plant (0 1/812009 4/7/2009 89 329.7 0.15 3.704 25.93
34 Front Gate 1/8/2009 4/7/2009 89 166.7 0.08 1.873 13.11
35 Jna 1 Travel Way 0 38.2 #DIV/O! #DIV/O!#DIV/O!
36 Jna I Travel Way 0 30.3 #DIV/O!#DIV/O!#DIV/O!
37 JDa I Travel Way 0 33.3 #DIV/O!#DIV/O!#DIV/O!
38 Jna I Travel Way 0 31.2 #DIV/O!#DIV/Ol #DIV/O!
39 JDa I Travel Way 0 39.3 #DIV/O!#DIV/O!#DIV/O!
40 JDa I Travel Way 0 32.7 #DIV/O!#DIV/O! #DIV/O!'"41 :ma I Travel Way 0 33.7 #DIV/O!#DIV/O!#DIV/O!
42 Jna 1 Travel Way 0 34 #DIV/O! #DIV/O!#DIV/O!
43 Jna I Travel Way 0 33.7 #DIV/O!#DIV/O!#DIV/O!
44 Jna 1 Travel Way 0 29 #DIV/O!#DIV/O!#DIV/o!
Control Front Gate 101212008 11812009 98 36.9 0.02 0.377 2.64
14 BHV-I 101212008 11812009 98 42.5 0.02 0.434 3.04
15 BHV-2 101212008 11812009 98 35.4 0.Q2 0.361 2.53
16 BHV-3 10/212008 11812009 98 33.4 0.01 0.341 2.39
17 BHV-4 101212008 11812009 98 30.6 0.01 0.312 2.19
18 BHV-5 101212008 11812009 98 35.1 0.01 0.358 2.51
19 SAG Mill 101212008 11812009 98 267.6 0.11 2.731 19.11
6 Leach 1012/2008 11812009 98 264.6 0.11 2.700 18.90
21 CCD 10/2/2008 118/2009 98 88 0.04 0.898 6.29
22 North SX 10/212008 1/812009 98 59.8 0.Q3 0.610 4.27
29 South SX 10/212008 118/2009 98 222.1 0.09 2.266 15.86
8 Ilowcake Pre,101212008 11812009 98 105.5 0.04 1.077 7.54
25 lwcake Pack;101212008 118/2009 98 308.7 0.13 3.150 22.05
26 10wcake StOI 10/212008 1/812009 98 244.4 0.10 2.494 17.46
27 lucking RoO!10/2/2008 11812009 98 164.7 0.07 1.681 11.76
28 ill Lunch Ro(101212008 11812009 98 63.2 0.03 0.645 4.51
31 :e Feed Griz_101212008 11812009 98 390.3 0.17 3.983 27.88
33 Iple Plant (0 101212008 11812009 98 329.7 0.14 3.364 23.55
23 nistration Bu 101212008 118/2009 98 41.2 0.02 0.420 2.94
24 min Power P 101212008 11812009 98 97.1 0.04 0.991 6.94
1 )5 Control R 10/2/2008 1/812009 98 54.7 0.02 0.558 3.91
2 BHV-6 10/212008 1/812009 98 34.3 0.01 0.350 2.45
4 Idium Precip.10/212008 1/812009 98 88.5 0.04 0.903 6.32
32 Scalehouse 101212008 1/8/2009 98 196.4 0.08 2.004 14.03
20 Tails 101212008 11812009 98 146.5 0.06 1.495 10.46
13
12
ter Press Rot 10/2/2008
Met.Lab 101212008
118/2009
11812009
98
98
193.2
66
0.08
0.03
1.971
0.673
13.80
4.71
White Mesa Mill Second Quarter 2009 Environmental Spherical Gamma Monitor Results
Mean
Total Days Ambient
Badge Date Date Badge at Dose mRem/mRem/mRem/
Number Location Issued Returned WMM Equivalent hour Day Week
Control 1inistration \4/7/2009 712/2009 86 34.1 0.02 0.397 2.78
1 )5 Control R 417/2009 712/2009 86 47.3 0.02 0.550 3.85
2 BHV-6 41712009 712/2009 86 30.2 0.01 0.351 2.46
3 )f.-M01ycOJ 4/7/2009 712/2009 86 634.1 0.31 7.373 51.61
4 ldium Precip.4/7/2009 71212009 86 74.1 0.04 0.862 6.03
5 )cake Drying 4/712009 7/2/2009 86 236 0.11 2.744 19.21
6 Leach 4/7/2009 71212009 86 240.3 0.12 2.794 19.56
7 Mill Control 4/712009 7/2/2009 86 0 0.00 0.000 0.00
8 tlowcake Pre.4/712009 7/212009 86 141.7 0.07 1.648 11.53
9 ral Control F 4/7/2009 7/2/2009 86 64.8 0.03 0.753 5.27
10 leI Screen (0 4/712009 71212009 86 230.6 0.11 2.681 18.77
11 I Dumping S 4/7/2009 7/2/2009 86 390.5 0.19 4.541 31.78
12 Met.Lab 4/7/2009 71212009 86 53.2 0.03 0.619 4.33
13 .ter Press Ro(4/7/2009 712/2009 86 139.4 0.07 1.621 11.35
14 BHV-I 4/7/2009 7/2/2009 86 33.7 0.02 0.392 2.74
15 BHV-2 4/712009 7/212009 86 33.3 0.02 0.387 2.71
16 BHV-3 4/712009 7/2/2009 86 28.8 0.01 0.335 2.34
17 BHV-4 4/7/2009 71212009 86 28.9 0.01 0.336 2.35
18 BHV-5 4/712009 71212009 86 31.7 0.02 0.369 2.58
19 SAG Mill 4/7/2009 71212009 86 226.1 O.1l 2.629 18.40
20 Tails 4/7/2009 71212009 86 121 0.06 1.407 9.85
21 CCD 4/7/2009 7/2/2009 86 72.1 0.03 0.838 5.87
22 NorthSX 41712009 7/2/2009 86 81.6 0.04 0.949 6.64
23 nistration Bu 4/7/2009 712/2009 86 36.8 0.02 0.428 3.00
24 min Parking 417/2009 7/2/2009 86 86.1 0.04 1.001 7.01
25 )wcake Pack;4/7/2009 7/2/2009 86 334.5 0.16 3.890 27.23
26 lowcake StOI 4/7/2009 7/2/2009 86 144.9 0.07 1.685 lI.79
27 lucking RoOJ 4/7/2009 7/2/2009 86 130 0.06 1.512 10.58
28 ill Lunch Ro(4/7/2009 7/2/2009 86 55.1 0.03 0.641 4.48
29 South SX 417/2009 7/2/2009 86 178.9 0.09 2.080 14.56
30 e.Super.'s 0 4/7/2009 7/2/2009 86 46.2 0.02 0.537 3.76
31 :e Feed Griz,417/2009 7/2/2009 86 329.6 0.16 3.833 26.83
32 Scalehouse 4/7/2009 7/2/2009 86 169.2 0.08 1.967 13.77
33 Iple Plant (0 4/7/2009 7/2/2009 86 344.2 0.17 4.002 28.02
34 Front Gate 4/7/2009 7/2/2009 86 173.5 0.08 2.017 14.12
35 :ma 1 Travel Way 0 38.2 #DIV/O!#DlV/O!#DlV/O!
36 )Da I Travel Way 0 30.3 #DIV/O!#DIV/O!#DlV/O!
37 :ma I Travel Way 0 33.3 #DIV/ot #DIV/O!#DIV/O!
38 :ma I Travel Way 0 31.2 #DIV/O!#DIV/O! #DIV/O!
39 )na 1Travel Way 0 39.3 #DIV/O!#DIV/O!#DlV/O!
40 )Da I Travel Way 0 32.7 #DIV/O!#DIV/O!#DlV/O!
41 ::ma I Travel Way 0 33.7 #DIV/Ol #DIV/O!#DIV/O!
42 ::ma I Travel Way 0 34 #DIV/O!#DIV/O! #DIV/O!
43 ::ma I Travel Way 0 33.7 #DIV/O!#DIV/O!#DlV/O!
44 :ma I Travel Way 0 29 #DlV/O'#DIV/O!#DlV/O!
Control Front Gate 417/2009 7/2/2009 86 34.1 0.02 0.397 2.78
14 BHV-I 41712009 712/2009 86 33.7 0.02 0.392 2.74
15 BHV-2 417/2009 712/2009 86 33.3 0.02 0.387 2.71
16 BHV-3 417/2009 7/212009 86 28.8 0.01 0.335 2.34
17 BHV-4 41712009 7/2/2009 86 28.9 0.01 0.336 2.35
18 BHV-5 41712009 7/2/2009 86 31.7 0.02 0.369 2.58
19 SAG Mill 417/2009 7/2/2009 86 226.1 0.11 2.629 18.40
6 Leach 417/2009 712/2009 86 240.3 0.12 2.794 19.56
21 CCD 41712009 71212009 86 72.1 0.03 0.838 5.87
22 North SX 41712009 71212009 86 81.6 0.04 0.949 6.64
29 SouthSX 41712009 7/2/2009 86 178.9 0.09 2.080 14.56 ;;;.
8 Ilowcake Pre,417/2009 7/2/2009 86 141.7 0.07 1.648 11.53
25 )wcake Pack.417/2009 712/2009 86 334.5 0.16 3.890 27.23
26 lowcake StOl 417/2009 712/2009 86 144.9 0.07 1.685 11.79
27 lucking Roor 417/2009 7/212009 86 130 0.06 1.512 10.58
28 ill Lunch Ro<417/2009 712/2009 86 55.1 0.03 0.641 4.48
31 :e Feed Griv 417/2009 7/2/2009 86 329.6 0.16 3.833 26.83
33 lple Plant (0 417/2009 712/2009 86 344.2 0.17 4.002 28.02
23 nistration Bu 4/7/2009 7/212009 86 36.8 0.02 0.428 3.00
24 min Power P 417/2009 7/2/2009 86 86.1 0.04 1.001 7.01
1 )5 Control R 417/2009 7/212009 86 47.3 0.02 0.550 3.85
2 BHV-6 4/7/2009 7/2/2009 86 30.2 0.01 0.351 2.46
4 Idium Precip.417/2009 7/212009 86 74.1 0.04 0.862 6.03
32 Scalehouse 417/2009 7/212009 86 169.2 0.08 1.967 13.77
20 Tails 417/2009 71212009 86 121 0.06 1.407 9.85
13
12
ter Press ROI 417/2009
Met.Lab 4/7/2009
7/212009
712/2009
86
86
139.4
53.2
0.07
0.03
1.621
0.619
11.35
4.33
Ra-226 Concentrations In Vegetation (uCi/Kg)
1.00E-02 I i
1.00E-03 oJ.It ....I
1.00E-04
-Q)
(ij
~1.00E-05 I UI •\I \~I I I 't {I IJI r ,-'t l fl ~
Cld.
1.00E-06 I III ...~~I
1.00E-07 I I I
1.00E-08 Iii iii iii iii iii iii iii iii
!O"!Ot"J.-!O<>:J ~!O~!Oro ,;;..!OCO !OC?>R,~R,"R,t"J.-R,<>:J ~R,~R,ro ~R,CO R,C?>~~~"~t"J.-~<>:J ~~~~ro ~~CO~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I -NE -NW -'-SW I
Pb-21 0 Concentrations In Vegetation (uCi/Kg)
1.00E-02
1.00E-03
1.00E-04
G)
iii~1.00E-05
OloS-
1.00E-06
1.00E-07
1.00E-08
R>"R>"v R><>:J ~R>~R>fo ~R>'O R>O)BC)B"B"v B<>:J *"B~Bfo ~B'O BO)~C)~"~"v ~<>:J ~~~~fo ~~'O~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I -+-NE -NW ~sw I
NORTHEASTOFMILL
Ra·226 Ra-226 LLD Ph-210 Ph-210 lLD
SAMPLED VALUE ERROR uCilKg VALUE ERROR uCilKll
DATE uCilKg uCilKg 5.0E-OS uCilKg llCifKg 1.0E-06
27-All -81 J.90E-04 1.0E-Os s.OE-OB 1.l0E-OJ 1.0E-04 1.0E·(J6
2().()ct-BI IAOE·04 l.OE-05 s.OE-OS 6.BOE-04 B.OE-Os 1.0E-(J6
IS-A",-B2 1.lIE·04 l.JE-05 l.OE·06 '.90E-04 7.0E-05 B.OE·Os
0I-Jul-82 1.60E·O'l.OE-05 s.OE-OB 8.00E-04 1_7E-O'1.0E·07
JO·NoY·82 2.67E·06 I.lE-06 l.OE·06 1.0BE-04 9.0E-06 1.0E·05
I)-A",-8J 9.l6E·05 6.2E-06 8.0E-09 4.97E-04 9.JE-05 I.OE·04
0I-luI-83 1.l2E-O'l.2E-05 6.0E-ll6 l.B4E-04 1.2E-OS 1.0E·06
30-Jon·84 l.09E-04 8.0E-06 4_0E·ll6 7.80E-04 6.2E·OS 6.0E-05
28-Jun-84 JA7E·04 l.2E-Os 2_0E-09 J.7sE-OJ 1.6E-04 4.0E-OS
14-Noy-84 5.6IE-04 2.0E-04 2.0E-07 7.82E-OJ J.JE-04 7.0E·OS
27·Mar-85 1.0sE·OJ J_OE-05 2.0E-06 J.22E-OJ 1.4E-04 2.0E·05
Is-lul-85 8.20E·OS 7_0E-06 3.0E-ll6 7.70E-04 t.JE-04 2.0E.Q4
09-0d-85 1.l5E·04 I.OE-05 3.0E-06 5.100-04 J.OE-OS 2.0E-Os
24-Mar-86 S.nE-04 2.IE-05 4.0E·ll6 2.49E-OJ 1_0E-04 1.0E·Os
10-Jul-86 1.0IE·04 I.3E-05 3.0E-06 l.17E·OJ 1.7E-OJ 2.0E-04
18·Dec-86 8.?OE-04 I.OE-05 3.0E-ll6 6_800·04 ME-OS 3.0E·ll6
20-A r-87 s.90E-04 7.0E-05 5.00-08 I.sOO-OJ 1.0E-04 1.00-06
05-Jun·8J 1.60E-04 J.OE-05 5.0E-08 9.sOE-04 4.0E-OS l.OE-06
22·D~-87 2.lOE·04 '.OE-05 5.00-08 1.70E-OJ t.OE·04 l.OE·06
19-Ap,·88 4.50E.Q4 7.0E-05 5.00-08 I.'OO-OJ I.OE-04 l.OE·06
28-Jul-88 3.20E-Os 2.2E-05 5.0E·08 1.5OE·04 4.4E-04 1.0E·06
07·A (-89 5.60E-04 '.OE-05 ...l.IOE-OJ 1.0E-0I ...
06-Jun-89 I.I0E-04 2.0E-05 ...2.300-04 2.0E·OS ...
07-Nov·89 6.00E-04 s.OE-05 7.00-06 2.04E-OJ ?OE-05 1.4E·Os
17·Anr-90 2.60E-04 J.OE-05 4.0E-06 J.lOE-04 2.0E·05 2.2E·05
20-100-90 1.80E-04 2.0E-05 5.0E-08 J.20E-04 2.{lE·05 I.DE-06
17-Qct-90 1.60E-04 2.0E·05 5.0E-O&J.JOE-(}4 2_0E-05 1.0E-06
IV-Apr_91 J.20E...[)4 2.0E-OS 5.0E-06 J.OOE-04 2.0E.QS 1.0E-{}6
Il·Jun·91 9.IDE-OS 1.6E-05 2.0E.(}7 1.90E·04 2.0E-OS 2.0E-O?
20·Noy-91 4.5OE-04 ..t.OE-OS S.OE-08 L09E-OJ 5.CE-05 LOE·06
22·Apr-92 3.60E-05 I.OE-05 2.0E-06 1.50E-04 2.DE·05 LOE-D5
IO-Jun-92 l.ooE·05 1.0E-06 2.0E-07 1_50E·05 2.0E·05 1.0E-06
IO-Jun-92 7.90E-05 3.5E-05 J_OE-06 7.10E.(}4 7.0E-OS 2.0E-05
13·Anr-93 3.70E-05 2.2E-05 3.0E.Q6 2.80E-04 3.0E-OS 2.0E-05
26-100-93 3.00E-05 LSE--05 ).OE-06 4.jOE-05 3.5E-OS 2.0E·05
12-Oc1-93 6.60E-OS 2_7&05 3.0E-06 5.30E-04 6.0£-05 2.DE-OS
II-May-94 1.80E-04 4.0E-05 3.0E-05 4.40E-04 6.0£-05 2.0E-04
19·Jul-94 DIE-OS 1.2E·06 9.0E-08 3.00E-OS 6_1E·06 4.5E...Q6
28-NDV-94 2.40E-04 I.5E-05 1.7E-07 1.70E-O~1.IE-OS 8.36-07 !
lI·Ap'-95 6.70E-05 5AE-06 1.6E·07 1.40E-04 1.36-05 7.9£--D7 i
06-Jul-95 1.50£-05 1.5E-06 1.5E-07 5.IOE-05 4.5£·mi 7.6£-07iJ5-Nov-95 5.50£-05 5.0E·06 1.8E-07 6.70£-05 1.0E·05 8.8E-07
23-Aor-%5_20E-05 2.SE-06 1.5£-07 3.20£-05 4.56·06 1.8E-07
JHul-96 ..
14-Nov-96 3.00£-05 2.5E·06 1.8£.{}7 IAO£-04 7.IE.(J6 9.3£-07 i
2J·Anr-97 I.lOE-05 4.7£-07 1.2E-07 4.10£-05 J.6£..(){j 6.IE-07 I
05·Scr-97 I.IDE-OS 4.3E-07 1.3£-07 2.10£-05 7.3£-07 6.7£-07 :
20-Nuv-97 8.00£-06 1.2E·06 5.6E·07 1.40E-04 4.6£-06 1.1£-07
23-Mlu-98 <9.10&05 9.IE-OS 9.IE-05 <4.50£.{}4 4..5E.(J4 4.5E·04
16-Jun-98 1.80E-05 1.2£-06 6.3E-08 4.ooE-05 1.8E.Q6 3.2£-07
OS·Nov-98 5.70£-05 1.0£-06 82E-08 8.70E-OS 5.0E-Q6 4.1£.{}7
15-Anr·99 2.00E-04 3.0E-06 J.2£·07 3.00£-04 I.OE-o~6.0E-05
07-1ul-99 6.03£-05 1.4E-06 8.3£-08 1.4OE·04 4.7E.Q6 4.2£-07
02-Dec-99 2.30E-05 1.0£-06 23£·07 2.10£-05 1.0£-06 1.1£-06
21-Anr-QO 1.50£-04 J.OO·06 1.2E-07 1.60£-04 8.0E-06 5.9E·07
22-1un-OO 1.2QE-06 LOE-07 2.8E·07 1.6OE·04 1.0E-oS £.4E-06
2J-Dcc.oo 1.60£·06 I.IE-06 3.7£-07 5_lOE-05 5.0£-06 1.9E-06
30-Apr·Ol 1.00£-06 I.DE-07 2.4E-07 <1.2E-06 1.0E·07 2.4£-U7
14-Jun-0I 2.30E-06 2.UE-07 9_9E-UK 3.KOE-06 2.0E-07 S.oE-U7
J7-Dec-OI 9.1lJE-Q6 2.4E·06 1.2E-07 305lE-05 3.0E-06 6DE.Q?
07·Mly-02 3.30E·05 1.8E-ll6 ?6E-07 4.SDE-OS 2.6E-06 l.OE-OS
07-]uJ·02 5.55E-05 2.8E·ll6 7.6E-07 S.3IE-OS 3.9E-06 l.OE-05
15-Dec-02 USE·05 J.6E·06 ?6E-O?1.29E-04 6.2E-06 LOE-05
21-Mar-03 9.100·06 1.3E-ll6 J.6E-07 I.IJE-OS L6E-06 3.'E-06
W-lun-OJ 2.S0E-OS 1.3E-Q6 J.6E-07 3.26E-06 2.0E-06 1.4E+08
i ZO·Nov-03 S.?0E·05 J.SE-Q6 L5E-07 4.05E-05 S.8E-ll6 8.JE-O?
08-Ap,·O'9.J8E·05 3.7E-ll6 I.IE-O?5.8iE-05 3.0E-Q6 S.SE-07
12-Jun-04 S.6JE-OS J.4E-ll6 L8E-07 6.42E-05 S.9E-06 9.DE-0?
30-Nov-04 8AIE-OS s.50E-06 2.00E-OS 2.48E-04 I.40E-OS 3.00E-07
21-Ap"OS 5.60E-05 3.00E-06 L40E-07 5.80E-05 4.00E-06 6.90E-07
I 13-Joo-OS 9.IOE-Q6 1.50E-06 l.80E-O?LIOE-OS I.20E-OS 9.00E-07
IO-Nov-05 6.00E-OS J.OOE-06 1.I0E-1O 1.70E-06 6.40E·07 s.50E-lO
OJ-A"-06 8.00E-OS S.OOE-06 S.OOE-08 J.40E-04 1.20E.QS I.00E-06
16-Jw·06 4.IOE-DS 3.JOE-06 5.00E-08 1.16E-04 6.lOE-06 LOOE-06
28-No\·-C6 1.17E-04 4_60E-06 I.90E·O?3.28E-04 9.50E-06 9.50E-07
3Q..Mar-07 9_?OE-OS 4.40£-06 1.90E-0?340E·04 8.700·06 8-.4..01
I-Jun-O?1.30E-05 I.60E-ll6 L90E-07 1.20E-04 6.600·06 9.70E-O?
23-Nov·07 ?OOE-05 8.20E-06 2.00E-07 S.OOE-04 2.00E-OS 1.20E-06
22-Ap,·{)S J.6E-06 J.OOE-ll6 S.20E-O?2.3E-04 1.40E·05 I.DOE-OO
18-100·0&3.2E-Q')3_20E-{}O l.ROE-Ofi 6,9E..oS 3.5OE-OS S50E·OS
28-Al'Jr.Q9 !5.9E-04 l.35E-O 1.50E-06 3.4F.-04 I.JOE-O 1.50E-06
17-1tJn-09 J.9E-05 L45E*6 4.90E-07 3.6&-05 1.IOE·05 I.SOE-05
NORTHVlESTOF MILL
SOUTHWESTOFMILL
ENERGYLABORATOS.::'C,S,lIyP,•2393SaltCreekHighway (82801)•P,o.ErP.'(3258.-!.Casper,WY82802:
lOllfree 888.235.0515 .t.<!235(i5"·Fax [phone] •casper@energf(0m (w.energYlab.com
-;•..,:.,'-......~."'".:.
ANALYTICAL SUMMARY REPORT
June 02,2009
Denison Mines (USA)Corp
6425 S Hwy 191
Blanding,UT 84511
Workorder No.:C09050068
Project Name:Early Spring Vegetation
Energy Laboratories,Inc.received the following 3 samples for Denison Mines (USA)Corp on 5/1/2009 for analysis.
Sample 10 Client Sample 10 Collect Date Receive Date Matrix Test
C09050068-001 Northeast BHV-1 04/28/09 14:30 05/01/09 Vegetation Digestion,Radiochemistry
Lead 210
Radium 226
C09050068-002 North West 04/30109 09:00 05101/09 Vegetation Same As Above
C09050068-003 South West 04/29/0907:00 05101/09 Vegetation Same As Above
As appropriate,any exceptions or problems with the analyses are noted in the Laboratory Analytical Report,the
QAlQC Summary Report,or the Case Narrative.
If you have any questions regarding these tests results,please call.
ReportAPproved~~~
STEVE rJlRLSTON
T~I(~CAL 7XUUCr0f<..
ENERGYLABORATOrc.s,INC••2898 SaIl Creek Highway (82601)•P.O.Bpx 3258 '.Casper,WY82602
To/I~ree 888.235.0515 •!235(~'.'i .Fax [phone] .casper@ener!!Y(,om C~'W.energylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab ID:
ClientSample 10:
Denison Mines (USA)Corp
Early Spring Vegetation
C09050068-001
Northeast BHV-1
Report Date:06/04/09
Collection Date:04/28/0914:30
DateReceived:05/01/09
Matrix:Vegetation
Melt
Analyses Result Units Qualifiers RL QCL Method Analysis DateI By
RADIONUCLIDES.TOTAL
lead 210 3.4E-04 uCi/kg E909.0M 05119/09 09:00/dm
lead 210 precision (±)2 DE-OS uCilkg E909.0M 05/19/09 09:00/dm
Lead 210 MDC 28E-05 uCi/kg E909.0M 05/19/0909:00I dm
lead 210 altu 338 pCilkg E909.0M 05/19/09 09:00 /dm
lead 210 precision (±)altu 20.3 pei/kg E909.0M 05119/09 09:00 /dm
Lead 210 MDC altu 28.1 pei/kg E909.0M 05/19/09 09:00 /dm
Radium 226 5.9E-04 uCi/kg E903.0 OS/26/09 21:40/jah
Radium 226 precisIon (±)1.3E-05 uCilkg E903.0 05126/09 21:40 /jah
Radium 226 MOe 1.5E-06 uCilkg E903.0 05126/09 21:40 I jah
Radium 226 altu 587 pCi/kg E903.0 05126/09 21:40/jah
Radium 226 altu precision (:1:)13.5 pCi/kg E903.0 05126/09 21 :40/jah
Radium 226 altu MDC 1.5 pCilkg E903.0 OS/26/09 21 :40 Ijah
Report
Definitions:
Rl -Analyle reporting limit.
aCl -Quality control limit.
MOC -Minimum detectable concentration
Mel -Maximum contaminant level.
ND -Notdetected at the reporting limit.
ENERGYLABORATO/?:,r::S,INC.'2393Sal!CreekHighway(82601)•P.Q Bog3258 ::Casper,WY82602
ToIl,?,ee 888.235.0515 •V >735.(-:-:-:1 •Fax [phone] .casper@energyl(?m {'l.energylab.com
'-:...:-,"-
LASORATORY ANALYTICAL REPORT
Client
Project:
Lab 10:
Client Sample ID:
Denison Mines (USA)Corp
Early Spring Vegetation
C09050068-002
North West
Report Date:06/04/09
Collection Date:04/30/09 09:00
DateReceived:05/01/09
Matrix:Vegetation
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis DateI By
RADIONUCLIDES -TOTAL
Lead 210 1.9E-04 uCi/kg E909.0M 05119/09 09;00 I dm
Lead 210 precision (±)1.5E-05 uCilkg E909.0M 05/19/09 09;00 I dm
Lead 210 MOe 2.2E-05 uCi/kg E909.0M 05/19/09 09:00/dm
Lead 210 altu 194 pCi/kg E909.0M 05/1910909:00I dm
Lead 210 precision (±)altu 15.1 pCi/kg E909.0M 05/19/09 09:00 I dm
Lead 210 MOC altu 21.7 pCilkg E909.0M 05/19/0909:00/dm
Radium 226 5.2E-05 uCi/kg E903.0 OS/26109 21:40/jah
Radium 226 precision (±)3.6E-06 uCi/kg E903.0 OS/26/09 21:40 /jah
Radium 226 MOe 1.1E-06 uCilkg E903.0 OS/26/0921:40/jah
Radium 226 altu 52.4 pCI/Kg E903.0 05126/09 21 :40I jah
Radium 226 altu precision (:I:)3_6 pCi/kg E903.0 05126f09 21 :40Ijah
Radium 226 alfu MOe 1.1 pCi/kg E903.0 05126/09 21:40I jah
Report
Definitions:
RL -Analyte reporting limit.
QCl -Quality controllimiL
MDC -Mlnbnum detectable concentration
Mel·Maximum contaminant level.
ND •Not detected at the reporting limit.
ENERG YLABORATO/?'r:S,INC.·',2393Salt Creek Highway (82801)•RD.Box 3258 :.Casper,WY82602
To/IF.ree 888.235.0515 •(235.(7'""Fax [phone] •casper@energyl(7m '(v.energylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab ID:
Client Sample 10:
Denison Mines (USA)Corp
Early Spring Vegetation
C09050068-003
South West
Report Date:06/04109
Collection Date:04/29/09 07:00
DateReceived:05/01/09
Matrix:Vegetation
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date 1By
RADIONUCLlDES·TOTAL
Lead 210 3.7E-05 uCi/kg E909.0M 05119/09 09:00 1dm
Lead 210 precision (±)1.5E-05 uCilkg E909.0M 05/19/09 09,001 dm
Lead 210 MDC 2.5E-05 uCi/kg E909.0M 05119/09 09:00 1dm
Lead 210 allu 36.6 pCl/kg E909.0M 05/19/09 09,00 1dm
Lead 210 precision (±)altu 15.5 pCilkg E909.0M 05119/09 09:00 1dm
Lead 210 MDC altu 25.2 pCilkg E909.oM 05/19/09 09:00 1dm
Radium 226 2.6E-05 uCilkg E903.0 05126109 21:401jah
Radium 226 precision (±)2.9E..Q6 uCilkg E903.0 05/26/09 21:40 I jah
Radium 226 MDC 1.4E-06 uCi/kg E903.0 05/26109 21 :40 1jah
Radium 226 altu 26.0 pCilkg E903.0 05126/09 21:401jah
Radium 226 altu precision (±)2.9 pCi/kg E903.0 0512610921:40 Jjah
Radium 226 altu MDC 1.4 pCilkg E903.0 05/26/09 21 :401jah
.._--_.~_..
Report
Definitions:
RL -Analyte reporting limit.
QCl-Quality conlrollimit.
MOC -Minimum detectabie concentration
MCl-Maximum contaminant level.
ND -Not detected althe reporting limil.
ENERGYLABORATOI1'':=,~INC.•2393 Sal/CreekHighway (82601)•ROo 80)(3258 :Casper,WY82602
TollF,ree 888.235.0515 •[,235.("'';.Fax [phone] •casper@energyl(w -(y.energylab.com
".'..-.....-~
QA/QC Summary Report
Client:Denison Mines (USA)Corp
Project:Early Spring Vegetation
Report Date:06/04/09
Work Order:C09050068
Analyte Result Units RL %REC LowLimit High limit RPD RPDLimil Qual
Method:E903.0
Sample 10:LCS·22339
Radium 226
laboratory Control Sample
14 pCi/l
Run:BERTHOLD 770-2_090519A
88 70 130
Balch:118643
OS/26/0921:40
Sample 10:MB-22339
Radium 226
Radium 226 precision (±)
Radium 226 MDC
Method Blank
-0.2
02
0.4
pCi/L
pCi/L
pCi/l
Run:BERTHOLD 770-2_090519A 05/26/09 21:40
U
Sample 10:C09050243-o01FDUP Sample Duplicate
Radium 226 -0.34 pCilL
Radium 226 precision (±)0.98 pCill
Radium 226 MOC 1.8 pCi/l
•The Sample and the Duplicate are both below the MDe;the RPD is acceptable.
Run:BERTHOLD 770-2_090519A
70 130 320
05/26/0921:40
470.3 U
Sample Matrix Spike
0.0012 uCi/kg
Sample Matrix Spike
140 pCi/Filter
Sample Matrix Spike Duplicate
0.0011 uCi/kg
Sample ID:C09050347·Q01AMS
Radium 226
Method:E909.0M
Sample 10:C0905006B·002AMS
lead 210
Sample 10:C0905006B·002AMSD
Lead 210
Sample 10:MB·R118766
lead 210
Lead 210 precision (±)
Lead 210 MOC
Method Blank
·4
20
30
pCi/l
pCi/L
pCi/L
Run:BERTHOLD 770·2_090519A 05/26/09 23:22
92 70 130
Batch:R118766
Run:PACKARD 3100T~090519B 05/19/09 09:00
112 70 130
Run:PACKARD 3100TR_090519B 05/19/09 09:00
98 70 130 11 30
Run:PACKARD 3100TR_090519B 05f19/0909:00
U
sample ID:LCS·R118766
lead 210
Qualifiers:
RL -Analyte reporting limit.
Moe -Minimum detectable concentration
laboratory Control Sample
460 pCi/L
Run:PACKARD 3100TR_090519B
82 70 130
NO -Not detected at the reporting limit.
U-Not detected at minimum detectable concentration
05119/09 09:00
ENERGYLABORATO(-:S,INe.-,.-2393SaltCreekH;ghway (82601)•Po.Bt:>v32W_!,.casper,WY82602
Tollfree 888.235.0515 .../235.(;;'Fax [phone] •casper@energy{.'')17l{v.energylab.com
~.:.~...'.
QAlQC-Sum-mary Report
Client:Denison Mines (USA)Corp
Project:Early Spring Vegetation
Report Date:06/02/09
Work Order:C09050068
Analyte
Method:E903.0
Result Units RL %REC Low Umit High Limit RPD RPDLimit Qual
Batch:118643
Sample 10:LCS-22339
Radium 226
Laboratory Control Sample
14 pCill
Run:BERTHOLD 770.2_090519A
88 70 130
05/26/09 21 :40
Sample 10:MB-22339
Radium 226
Radium 226 precision (±)
Radium 226 MOC
Method Blank
·0.2
0.2
0.4
pCl/l
pCi/l
pCi/l
Run:BERTHOLD 770·2_090519A 05/26/09 21 :40
U
Sample 10:C09050243·001 FDUP Sample Duplicate
Radium 226 -0.34 pCi/l
Radium 226 precision (±)0.98 pCi/l
Radium 226 MOC 1.8 pCi/L
•The Sampleand the Duplicateareboth belowthe MOe;the RPDisacceplable,
Run:BERTHOLD 770·2_090519A
70 130 320
05/26(09 21 :40
470.3 U
Sample Matrix Spike
0.0012 uCi/kg
Sample Matrix Spike
140 pCi/Filter
Sample Matrix Spike Duplicate
0.0011 uCi/kg
Sample 10:C09050347·001AMS
Radium 226
Method:E909.0M
Sample 10:C09050068·002AMS
lead 210
Sample 10:C09050068·002AMSD
Lead 210
Sample10:MB·R118766
Lead 210
Lead 210 precision (±)
lead210 MDe
Method Blank
·4
20
30
pCl/l
pCilL
pCi/l
Run:BERTHOLD 770-2_090519A OS/26/09 23:22
92 70 130
Batch:R118766
Run:PACKARD 3100TR_080518B 05119(09 09:00
112 70 130
Run:PACKARD 3100TR_090519B 05/19(09 09:00
98 70 130 11 30
Run:PACKARD 3100TR_090519B 05/19/09 09:00
U
Sample 10:LCS·R118766
lead 210
Qualifiers:
RL -Analyte reporting limit.
MOe -Minimum detectable concentration
laboratory Control Sample
460 pCi/l
Run:PACKARD 3100TR_090519B
82 70 130
ND -Notdetected at the reporting limit.
U -Not detected at minimum detectable concentration
05119/09 09:00
Page --L of-I-:-Chain of Custody and Analytical Request RecordllmlQTfjIl
waG j •=CJ_4_WhJ:_«=aT •'t ."-"1'=....-1.,",1"'\_'".-nll"-rrVYlUI;O g.;;t &11\.01""""V~lllQUVII 0;;1 "'o;J~l""'I:;;O.
compahe:Project Name,PWS,perml<Etc..Sample Origin EPA/State Compliance:
(;:I £,V\\"SD(\..,{)/L~u\~~Jl{5j)/!.A~I 'Ci.4T2H7t/N State:Yes 0 No 0 -
Report Mail Addri1:C~:,Narr{,I PhonefFax:Email:Sam~e"(PI",~Il'>.P.6 ~fsV7 tJ t"(f1.~1t1ttr'l2fr.'r./11 !rtjS~L;3~h7-/~?2!yjJ,,)/J/'e1'@cft}(J ZX¥\M t~d ~&.VIA-£'/l i9-kr
Invoice Address:I Invoibe Contact &Phone:Purchase Order:Quote/Bdttle Order:
,'Sa/~~v1.A "C,
Special Report/Formats -ELI must be notified &mJ&!1W@O@ !M~@C!Drn@'iJ[]@ Contact ELI prior to Shippedby;Iii-n~\ipriortosamplesubmittalforthefollowing:0 ...R RUSH sample submittal
~mtrJ~~for charges and Cooler ID(s):
~P~>;gOI r---..Cl ;scheduling -See 'BOIX:!Cf.)as fU'W Instruction Page.::5:",rn ~~::c U ,."'"
Dow DA2LA o«=~;l,"Ir-."0
ReceM"7t-lo-cUc:Comments:~«SI~1 ~~::I IDGSAoEDD/EDT(ElectronicData)0(1)...~e'-~21:;Cll On Ice;~;.--...."--.,D PO'WVIWWTP Format:~~~I,g FJr-.~E S::I Yes No~l(",
D State:o LEVEL IV Ec......-~I-:i E~Ig,W (ij Custody se~Q""D Other:o NELAC &'5 :>1 ~u.J e~~fJ)0 Ii Bottlest BCoolersZ(t;)Intact
SAMPLE IDENTIFICATION Collection Collection MATRIX ~~Signature(Name, Location,Interval,elc.)Date Time ~Match
1 Ilzg·to:J9 1-\/1//Ai.,bffnJ-:iSfl.iJ,..!!l/JI)I~
2A.J(j(>'t1-1 Ji)",.,or-11 .31J1JJ1'1 /)ll!Jb -l!://,'~
3 ~b"''f{/;Jes-r-4-lt(.2iJ'J1 fr1fJiJ -\(/'/(mf\'~&f'IIgW4.C.RJj ¥),lnnn
4 ~I~
5 l~
-----5 ~'':C:,
7 ~"<7"\')
8 I~0
9 IrQ[;I~
10 10:2h
Custody ~Shedby ~~l;Datemme:;/to --}2nat~Received by (print):Datemme;Signature;~A)(,~1I-'5!'J.?,,/P1 ~~\~Record Relincj~ishe<1by(print):Date/lime:('/Slgnal~ra:Recel\ied by(print):DalefTIme:Signalure:
MUST be
Signed ""-.I Received byLalx>ratory;Da~~/rA orw Signature;
Sample Disposal:Return to Client:Lab Disposal:
In certain circumstances,samples submitted to Energy Laboratories,Inc,may be subcontracted to other certified laboratories in order to complete the analysis requested,
This serves as notice of this possibility.All sub-contract data will be clearly notated on your analytical report,
Visit our web sile atWW'Q',energylab,com for additional information,downloadable fee schedule,forms,and links.
(--
.~_.."'
Energy Laboratories Inc
Workorder Receipt Checklist
Denison Mines (USA)Corp
I~IIIII~III~IIIII~IIIIIIIIIIIII~111111~ll~IIIIII
C09050068
Login completed by:Corinne Wagner Date and Time Received:5/1/20099:30 AM
Reviewed by:Received by:ckw
Reviewed Date:Carrier name:Next Day Air
Shipping container/cooler in good condition?Yes 0
Custody seals intact on shipping container/cooler?Yes 0
Custody seals intact on sample bottles?Yes 0
Chain ofcustody present?Yes 0
Chain ofcustody signed when relinquished and received?Yes 0
Chain ofcustody agrees With sample labels?Yes 0
Samples in proper container/bottle?Yes 0
Sample containers intact?Yes 0
Sufficient sample volume for indicated test?Yes 0
All samples received within holding time?Yes 0
Containerrremp Blank temperature:NINe
No 0 NotPresent 0
No 0 Not Present 0
No 0 NotPresent 0
No 0
No 0
No 0
NoD
No 0
No 0
No 0
Water -VOA vials have zero headspace?
Water·pH acceptable upon receipt?
Yes 0
Yes 0
NoD
No 0
No VOA vials submitted 0
NotApplicable 0
~~_~"~••N"N w __~~w ""~_
Contact and Corrective Action Comments:
None
ENERGYLABORArO("::~INP,_2393Sa/I CreekHighway (82801)•P.O,B{;l"J258/~~..Casper;WY82602TollFree888.235.0515 ••••235(...'•Fax J07.234.163g •casper@energyf 7m,.v.energyJab.comt'-,.."'._.'...'..
CLIENT:Denison Mines (USA)Corp
Project:Early Spring Vegetation
Sample DeliveryGroup:C09050068
ORIGINAL SAMPLE SUBMITTAL(S)
All original sample submittals have been returned with the data package.
Data:02-Jun-09
CASE NARRATIVE
SAMPLE TEMPERATURE COMPLIANCE:4°C (±2°C)
Temperature ofsamples received may not be considered properly preserved by accepted standards.Samples that are hand
delivered immediately after collection shall be considered acceptable If there Is eVidence that the chilling process has begun.
GROSS ALPHA ANALYSIS
Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters.Data provided by
this method for non potable waters should be viewed as inconsistent.
RADON IN AIR ANALYSIS
The desired exposure time is48 hours (2 days).The lime delay in returning the canister to the laboratory for processing
should be as short as possible to avoid excessive decay.Maximum recommended delay between end ofexposure to
beginning ofcounting should not exceed 8 days.
SOIUSOLID SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE,SIMAZINE AND PCB ANALYSIS USING EPA 505
Data forAtrazlne and Simazine are reported from EPA 525.2,not from EPA 505.Data reported by Ell using EPA method
505 reflects the results for seven individual Aroclors.When the results for all seven are NO (not detected),the sample
meets EPA compliance criteria for PCB monitoring.
SUBCONTRACTING ANALYSIS
Subcontracting ofsample analysesto an outside laboratory may be required.Ifso,ENERGY LABORATORIES will utilize Its
branch laboratories orqualified contract laboratories for this service.Any such laboratories will be indicated within the
Laboratory Analytical Report.
BRANCH LABORATORY LOCATIONS
eli-b -Energy Laboratories,Inc.-Billings,MT
eli-g -Energy Laboratories,Inc.-Gillette,WY
eli-h -Energy Laboratories,Inc.-Helena,MT
eli-r -Energy Laboratories,Inc.-Rapid City,SO
elH -Energy Laboratories,Inc,-College Station,TX
CERTIFICATIONS:
USEPA:WY00002,Radiochemical WY00937;FL-DOH NELAC:E87641,Radiochemical E871017;California:02118CA;
Oregon:WY200001;Utah:3072350515;Virginia:00057;Washington:C1903
ISO 17025 DISCLAIMER:
The results of this Analytical Report relate onlyto the items submitted for analysis.
ENERGY LABORATORIES,INC.-CASPER.WY certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities.Some results requested by the client may notbe covered
underthese certifications.All analysis data to be submitted forregulatory enforcement should be certified in the sample
state oforigin.Please verify ELI's certification coverage by visiting www.energylab.com
ELI appreciates the opportunity to provide you with this analytical service.Foradditional information and services visit our
web page www.energylab.com.
THIS IS THE FINAL PAGE OF THE LABORATORYANALYTICAL REPORT
ENERGYLABORATO;:"'f,S,INC;,2393SailCreek Highway (82601)•P.O ,P~'(3258 •Casper,WY82602
ToIIFree888.235.0515 '(:\;,:235.0515,'Fax [phone] •casper@energj.,,:om.www.energylab.com
~~.?,...
ANALYTICAL SUMMARY REPORT
July 30,2009
Denison Mines (USA)Corp
6425 S Hwy 191
Blanding,UT 84511
Workorder No.:C09060845
Project Name:Late Spring Vegetation
Energy Laboratories,Inc.received the following 3 samples for Denison Mines (USA)Corp on 6/19/2009 for analysis.
Sample 10 Client Sample 1D Collect Date Receive Date Matrix Test
C09060845-001 South West 06/17/0908:40 06/19109 Vegetation Digestion,Radiochemistry
Lead 210
Radium 226 i:.",.
C09060845-002 North West 06117/0912:2006119/09 Vegetation Same As Above
C09060845-003 North East 06/17/0913:1006/19/09 Vegetation Same As Above
~---_..---~----_.~~..
As appropriate,any exceptions orproblems with the analyses are noted in the Laboratory Analytical Report,the
QNQC Summary Report,orthe Case Narrative.
If you have any questions regarding these tests results,please call.
R.portApprovodBy,A~=
Steven E.Carlston
Technical Director
ENERGYLABORATOP'~S,INC.•2393SaltCreekHighway(82601)•AD.j?<'Y 8258 •Casper,WY82802
lOllFree 888.235.0515 {;235.0515 •Fax [phone] •casper@energA :om.www.energylab,com ';i ~.
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample 10:
Denison Mines (USA)Corp
Late Spring Vegetation
C09060845-001
South West
Report Date:07130109
Collection Date:06/17/0908:40
DateReceived:06119/09
Matrix:Vegetation
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date I By
RADJONUCLIDES •TOTAL
lead 210 3.5E-05 uCilkg E909.0M 07/09/09 08:561 dm
Lead 210 precision (±)7,9E-06 uCilkg E909.0M 07/09/09 08:561 dm
Lead 210 MDC 1.3E-05 uCilkg E909.0M 07109/0908:56 I dm
Lead 210 altu 34.6 pCilkg E909.0M 07109/09 08:56 I dm
Lead 210 precision (±)altu 7,9 pCI/kg E909,OM 07/09/09 08:561 dm
Lead 210 MDC altu 12.7 pei/kg E909,OM 07/09/09 08:56 Jdm
Radium 226 2.4E-05 uCi/kg E903,0 07113109 18:42/trs
Radium 226 precision (±)1.4E-06 uCi/kg E903.0 07113/09 18:42 /trs
Radium 226 MDe 3.9E-07 uCi/kg E903.0 07113/09 18:42/trs
Radium 226 allu 24.2 pCi/kg E903.0 07113/09 18:42/trs
Radium 226 altu precision (±)1.4 pCiJkg E903.0 07/13/09 18:42 I Irs
Radium 226 altu MDC 0.39 pCilkg E903.0 07/13/09 18:42 I trs
Report
Definitions:
Rl-Analyte reporting limit.
QCL -Quality conlrollimlt.
MOC -Minimum delectable concentration
MCL -Maximum contaminant level.
ND -Not detected at the reporting limit.
ENERGYlABORATo..'P1J;,5,INC.•2393Salt CreekHighway (82601)•P.l!!;P"~3258 .Casper,WY82802
llJII.Free'888.235.0515 ·(J235.0515 •Fax [phone] •casper@el1ergJl..,:vm·www.energylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample 10:
Denison Mines (USA)Corp
Late Spring Vegetation
C09060845-002
North West
Report Date:07/30109
Collection Date:06/1710912:20
DateReceived:06/19/09
Matrix:Vegetation
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date J By
RADIONUCLlDES -TOTAL
Lead 210 4.3E-05 uCi/kg E909.OM 07/09/09 OB:56 Jdm
Lead 210 precision (:t)1.0E-05 uCi/kg E909.0M 07/09/0908:561 dm
Lead 210 MOC 1.7E-05 uCi/kg E909.0M 0710910906:56 /dm
Lead 210 altu 43.2 pCi/kg E909.0M 07109/0908:56/dm
Lead 210 precision (:1:)altu 10.5 pCl/kg E909.0M 07109/09 08:561 dm
Lead 210 MOe altu 16.8 pCilkg E909.0M 07109/0908:561 dm
Radium 226 2.3E-05 uCi/kg E903.0 07J13/0918:42/Irs
Radium 226 precision (±)1.6E-OB uCi/kg E903.0 07J1310918:42/Irs
Radium 226 MOe 5.2E-07 uCi/kg E903.0 07113109 18:421Irs
Radium 226 allu 23.4 pCI/kg E903.0 07/13/0918:42/lrs
Radium 226 allLJ precision (±)1.6 pCi/kg E903.0 07/13/09 18:42 1Irs
Radium 226 allu MOe 0.52 pCilkg E903.0 07113/0918:42/Irs
Report
Definitions:
Rl-Analyle reporting limit.
QCl -Quality control limit.
MDC -Minimum detectable concentralion
MCl -Maximum contaminant revel.
NO -Not detected atthe reporting 8mit.
ENERGYLABORAT~.'f.':(F...S;INC,'-2393Salt CreekHighway (82801)•P.o.?".'<3258 -Casper,·WY82802
liJlfFree 888.235.0515 .j.;2.95.0515 •Fax [phone] •casper@energJ\'?om.www.energy/ab.com-.....:.."~:-.-..:
LABORATORY ANALYTICAL REPORT
~~:'-
Client:
Project:
Lab ID:
ClientSample ID:
Denison Mines (USA)Corp
Late Spring Vegetation
C09060845-003
North East
Report Date:07/30/09
Collection Date:06/17/0913:10
DateReceived:06/19/09
Matrix:Vegetation
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date I By
RADIONUCLIDES -TOTAL
Lead 210 3.6E-05 uCilkg E909.0M 07/09/09 08:56 I dm
Lead 210 precision (±)1.iE-OS uCilkg E909.0M 07/09109 08:56 I dm
Lead 210 MDC 1.BE-OS uCi/kg E909.0M 07109/09 08:561 dm
Lead 210 aIlu 35.9 pCilkg E909.0M 07109109 08:56 /dm
Lead 210 precision (±)allu 11.1 pel/kg E909.0M 07/0910908:56 1dm
Lead 210 MDe altu 18.0 pCi/kg E909.0M 07109109 08:56/dm
Radium 226 1.9E-OS uCi/kg E903.0 07113/09 20:20 /trs
Radium 226 precision (±)1.4E-06 uei/kg E903.0 07/13/0920:20 IIrs
Radium 226 MDC 4.9E-07 uCi/kg E903.0 07/13/0920:20/lrs
Radium 226 allu 19.3 pCi/kg E903.0 07/13/0920:20 I Irs
Radium 226 altu precision (±)1.4 pCi/kg E903.0 07113/09 20:20 firs
Radium 226 allu MDe 0.49 pCi/kg E903.0 07113/0920:20 fIrs
Report
Definitions:
RL -Analyte reporting limit.
QCL -Quality conlrol limit.
MDC -Minimum detectable concenlralion
Mel-Maximum contaminant level.
ND -Nol detected atthe reporting limit.
ENERGYLABORATOrJ;;.s,INC.•2393Salt CreekHighway(82601)•P.O.J?~'(3258 •Casper,WY82802
TO!!Free 888.235.0515 '\'.<;235.0515 'Fax [phone] •casper@energ;{'om.www.energylaiJ.com
QA/QC Summary Report
~/'i
Client:Denison Mines (USA)Corp
Project:Late Spring Vegetation
Report Date:07/30/09
Work Order;C09060845
Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual
Method:E903.0
Sample10:MB·22846
Radium 226
Radium 226 precision (±)
Radium 226 MDe
Method Blank
2E-0?
lE-O?
3E-07
uCilkg
uCilkg
uCilkg
Run:BERTHOLD 770·1_090702B
Batch:R120811
07/13109 18:42
U
Sample10:LCS·22846
Radium 226
Laboratory Control Sample
1.GE-OS uCi/kg
Run:BERTHOLD 770-1_090702B
106 70 130
07/1310918:42
Sample 10:C09060845·001AMS Sample Matrix Spike Run:BERTHOLD 770-1_0907028 07/1310918:42
Radium 226 5.5E-05 uCi/kg 69 70 130 S
•Spike response is outside of the acceptance range lor !his analySis.Since the LCS andthe RPD for the MS MSD pair are acceptable,the response is considered to be
matrix related.The batch Is approved.
Sample ID:C09060845·001AMSD Sample Matrix Spike Duplicate Run:BERTHOLD 770-1_0907028 07113/09 18:42
Radium 226 5.8E-05 uCi/kg 77 70 130 5.6 21.1
Method:E909.0M Batch:R121299
Sample ID;C09061228-00ZAMS Sample Matrix Spike Run:BECKMAN 6100TA_090709A 07/09/09 08:56
Lead 210 0.022 uCilkg 71 70 130
Sample ID:C09061228-002AMSD Sample Matrix Spike Duplicate Run:BECKMAN 6100TA_090709A 07/09/09.08:56
Lead 210 0.034 uCilkg 113 70 130 45 30 R
•The RPD ior [he MSD is high.The individualspike recoveries are within range,the MB is acceptable.andthe LCS Is within range.lherefora the batch is approved.
Sample 10:MB-R121299
Lead 210
Lead 210 precision (±)
Lead 210 MDC
Method Blank
4E-06
1E-05
2E-05
uCilkg
uCi/kg
uCi/kg
Run:BECKMAN 6100TA_090709A 07/09/0908:56
U
Sample 10:LCS·R121299
Lead 210
Laboratory Control Sampie
0,00054 uCilkg
Run:BECKMAN 6100TA_090709A
95 70 130
07/09/0908:56
Qualifiers:
RL -Analyte reporting limit.
MOe -Minimum detectable concentration
S -Spike recovery outside of advisory Iimils.
NO -Not detected at the reporting limit.
R -RPD exceeds advisory limit.
U -Not detected at minimum detectable concentration
,.,-:-:-l",
~lOi
yI~
"fQJInn~
page-Lof~
QUO~/Bottle Order:
Sampler:(Plea\8 Print)
Ue!<.--f/Io/~~r
EPNStale Compliance:
Yes 0 No 0
Purchase Order:
Email:
Sample Origin
State:(;l~
Contact ELI priorto ~bY:IVO~R RUSH sample submittal Ii .U(JS
~for charges and CoolerID($):
0 scheduling -See C~\t-ill t:Instruction Page
'(Qn
:c "C U0c:Comments::J~ec:uE S«:JJ-
ill ro
ill Een"Ii B@
Z ~:
f:::::T
l.{~'7d9 tel I~
~l.711 ~et ~
5~tel l'!\q I~
&Im&lb)7@O@ ~~@QD~@V'~@
o ID~m(/)£~>;gOI'-cn 0 >.S",..cn ~c::>Cis <n8«'5 ~........cnl03100)....
'-~~c:C1IfO-~lg~0):>C'tlE"Q..!:::a;
:::I E«!Ol:Z,)5 ~I
Invo'We Contact &Phone:
C;~
cil:ame
t 11'C'V /
PLEASE PRINT·Provide as much Information as possIble.
prOject Name,PWS,Permit,Etc.•
I ~-rs _'SIJIZ I~Cf 1kt;'!t/.]''"'''-
Chain of Custody and Analytical Request Record
7
DA2LAoEOOJEDT(Electronic Dala)
Format:o LEVEL'-IV----o NELAC
SAMPLE IDENTIFICATION Collection
(Name,Location,Interval,etc.)Date
Report Maillt~s~£Or
hIr/lI1ch.f'Ct tA-T ~'fS-/J
Invoice Add~.!
Special Report/Formats -ELI must be notified
prior to sample submittal forthe following:
Com~ame:J )eV\~-':,of\.i!V\l~v~
Dow
DGSAoPOTWfWWTPoState:_D Other:_
6
~o~'!-tl;J~>_)~ys;;;jb 17 '69 ~?o/611-V Ixl)<
5 ~
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Signature:Dateffime:Received by (print):
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Received by (print):---~--D-ateffime:Signature:
Sam Ie Dis osal:Return 10 Client:-
In certain circumstances.samples submitted to Energy Laboratories,Inc.may be subcontracted to other certified laboratories in order to complete the
This serves as notice of this possibility,All sub-contract data will be clearly notated on your analytical report.
Visit our web site at www.energylab.com for additional information,downloadable fee schedule,forms,and links.
10
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Energy Laboratories Inc
Workorder Receipt Checklist
Denison Mines (USA)Corp
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jIIIII~f~1111111~rI~III~~11/111111111111f~11111
C09060845
Login completed by:Halley Ackerman
Reviewed by:
Reviewed Date:
Date and Time Received:6/19/20099:30 AM
Received by:al
Carrier name:Next Day Air
Shipping container/cooler In good condition?
Custody seals intact on shipping container/cooler?
Custody seals intact on sample bottles?
Chain of custody present?
Chain ofcustody signed when relinquished and received?
Chain of custody agrees with sample labels?
Samples in proper container/bollle?
Sample containers intact?
Sufficient sample volume for indicated test?
Ail samples received within harding time?
Conlainerrremp Blank temperature:
Water -VOA vials have zero headspace?
Water -pH acceptable upon receipt?
~0
~0
~D
~0
~0
~0
~s0
~s0
~0
~0
~~
~D
~D
~D
~D
~O
~O
~O
~O
~D
~D
~O
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No 0
No 0
Not Present 0
Not Present 0
Not Present 0
No VOA vials submitted 0
Not Applicable [{/
_~_w_~w ~..~ft •_
____________~ftft ~~--_
Contact and Corrective Action Comments:
None
ENERGYLABORATOF'C,S,INC.·2393Sail Creek Highway (82801)•AD.8(>'(3258 •Casper,WY82602
TolfFree 888.235.0515 •\>,'235.0515 .Fax [phone] •casper@energy(..om •www.energy/ab.com
. ..-~',.,
CLIENT:Denison Mines (USA)Corp
Project:Late Spring Vegetation
Sample Delivery Group:C09060845
ORIGINAL SAMPLE SUBMITIAL(S)
All original sample submittals have been returned with the data package.
Date:30-Juf-09
CASE NARRArIVE
SAMPLE TEMPERATURE COMPLIANCE:4°C (±2"C)
Temperature ofsamples received may not be considered properly preserved by accepted standards.Samples that are hand
delivered immediately after collection shall be considered acceptable ifthere is evidence that the chilling process has begun.
GROSS ALPHAANALYSJS
Method 900.0 for gross alpha and gross beta is intended as a drinking water method for lowTOS waters.Data provided by
this method for non potable waters should be viewed as inconsistent.
RADON IN AIR ANALYSIS
The desired exposure time is 48 hours (2 days).The time delay in returning the canisterto the laboratory for processing
should be as short as possible to avoid excessive decay.Maximum recommended delay between end ofexposure to
beginning of counting should not exceed 8 days.
SOIUSOUO SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE.SIMAZINE AND PCB ANALYSIS USING EPA 505
Data for Atrazine and Simazineare reported from EPA 525.2.not from EPA 505.Data reported by ELI using EPA method
505 reflects the results for seven individual Aroclors.When the results for all seven are NO (not detected).the sample
meets EPA compliance criteria for PCB monitoring.
SUBCONTRACTING ANALYSIS
Subcontracting of sample analyses to an outside laboratory may be required.Ifso.ENERGY LABORATORIES will utilize its
branch laboratories or qualified contract laboratories for this service.Any such laboratories will be indicated within the
Laboratory Analytical Report.
BRANCH LABORATORY LOCATIONS
eJi-b •Energy Laboratories,Inc.•Billings.MT
eli-g·Energy Laboratories,Inc.-Gillette.Wf
eli-h -Energy Laboratories,Inc.-Helena,MT
eli-r -Energy Laboratories.Inc.-Rapid City,SD
eli-t -Energy Laboratories.Inc.-College Station,TX
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ISO 17025 DISCLAIMER:
The results of this Analytical Report relate only to the items submitted for analysis.
ENERGY LABORATORIES,INC.-CASPER,WY certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities.Some results requested by the client may not be covered
underthese certifications.All analysis data to be submitted for regulatory enforcement should be certified in the sample
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ELI appreciales the opportunity to provide you with this analytical service.For additional information and services visit our
web page www.energylab.com.
THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT
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FOURTH QUARTER
RADIONUCLIDE EMISSIONS TEST
CONDUCTED AT
DENISON MINES CORPORATION
NORTH YELLOW CAKE SCRUBBER
YELLOW CAKE DRYER BAGHOUSE
GRIZZLY BAGHOUSE
BLANDING,UTAH
December 29-30,2008
by:
TETCO
391 East 620 South
American Fork,UT 84003
Phone [phone]
Fax [phone] fax
Prepared for:
Denison Mines Corporation
6425 S Hwy 91
Blanding,Utah 84511
Date ofReport:
June 11,2009
NYC ScrubberTABLEIV
COMPLETE RESULTS
DENISON MINES CORPORATION,BLANDING,UTAH
NORTH YELLOWCAKE SCRUBBER EXHAUST
Symbol Description Dimensions Run #1 Run #2
Date 12/29/08 12/30/08
Filter #5210 5211
Begin Time Test Began 10:39 7:16
End Time Test Ended 18:41 15:18
Pbm Meter Barometric Pressure In Hg.Abs 24.80 24.65
~H Orifice Pressure Drop In.H2O 10405 1.579
Y Meter Calibration Y Factor dimensionless 1.001 1.001
Vm Voltune Gas Sampled-·MelerConditions cf 369.057 388.361
Tm Avg Meter Temperature "1'86.1 89.9
,j~P Sq Root Velocity Head Root In.H2O 0.2695 0.2851
Wtwc Weight Water Collected Grams 673.1 850.2
T,Duration ofTesl Minutes 480 480
Cp Pitot Tube Coefficient Dimensionless 0.84 0.84
Dn Nozzle Diameter Inches 0.3900 0.3900
CO2 Volume %Carbon Dioxide Percent 3.00 3.00
O2 Volume %Oxygen Percent 17.80 17.60
N2 &CO Volume %Nitrogen and Carbon Monoxide Percent 79.20 79.40
Vms1d Volume Gas Sampled(Standard)dscf 297.294 308.970
Vw Volume Water Vapor scf 31.737 40.087
Bws(measured)Fraction H20 in Stack Gas (Measured)Fraction 0.096 0.115
Bws(saturate<l)Fraction H20 in Stack Gas (Saturated)Fraction 0.078 0.092
Bws Fraction H,O in Stack Gas *Fraction 0.078 0.092
Xd fraction ofDry Gas Fraction 0.922 0.908
Md Molecular Wt Dry Gas Ib/lbmol 29.19 29.18
Ms Molecular Wt.Slack Gas Ibllbmol 28.31 28.16
%1 Percenllsokinetic Percent 100.l 100.3 AVG
Ts Avg Stack Temperature "F 100.1 105.2 102.7
As Slack Cross Sectional Area Sq.Fl.1.767 1.767
PG Stack Static Pressure In.H20 -0.040 -0.040
Pbp Sample Port Barometric Pressure In.Hg.Abs 24.73 24.58
Ps Stack Pressure In.Hg.Abs 24.727 24.577
Qs Stack Gas Volumetric Flow Rate (SId)dscfin 1.32E+03 1.37E+03 1.34E+03
Qa Stack Gas Volumetric Flow Rate (Actual)cfin 1.84E+03 1.96E+03 1.90E+03
Vs Velocity ofStack Gas tjJm 1.04E+03 1.11 E+03 I.07E+03
Curies Radionuclides persample pei 1.337E+04 1.885E+04
Crad Concentration ofRadionuclides pCi/dscf 4.497E+01 6.102E+OI 5.299E+Ol
ERrad Emission Rate ofRadionuclides pCi/hr 3.556E+06 5.005E+06 4.280E+06
*Ifthe measured moisture content is greater than the saturated moisture level (supersaturated),
the saturated moisture value will be used in all calculations (40 CFR 60,Method 4,Section 12.1.7).
~.
~Dryer Baghouse
TABLE V
COMPLETE RESULTS,PM
~DENISON MINES CORPORATION
YELLOW CAKE DRYER BAGHOUSE
J
Symbol Description Dimensions Run #1
Date Date 12/29/08
Filter #5213
I Begin Time Test Began 10:39
•End Time Test Ended 18:40
Pbm Meter Barometric Pressure In.Hg.Abs 24.80
I LlH Orifice Pressure Drop In.H,O 1.383
•Y MeIer Calibration YFactor dimensionless 0.994
Vm Volume Gas Sampled-Meter Conditions cf 383.119
Tm Avg MeterTemperature 'F 94.5
-,}LlP Sq Root Velocity Head Root In.H,o 0.5011
Wl:wc Weight Water Collected Grams 31.7
T t Duration ofTest Minutes 480
Cp Pitot Tube Coefficient Dimensionless 0.84
On Nozzle Diameter Inches 0.2765
CO2 Volume %Carbon Dioxide Percent 0.00
O 2 Volume %Oxygen Percent 20.90
N 2 &CO Voltane %Nitrogen and Carbon Monoxide Percent 79.10
Vmstd Volume Gas Sampled (Standard)dscf 301.801
Vw Volume Water Vapor scf 1.495
Bws Fraction H,o in Stack Gas Fraction 0.005
Xd Fraction ofDry Gas FractIOn 0.995
Md Molecl~ar Wt.Dry Gas Ib/lbmol 28.84
Ms Molecular WI.Stack Gas Ib/lbmol 28.78
%1 Percent Isokinetlc Percent 99.3
T s AvgStackTemperature "F 75.3
As Stack Cross Sectional Area Sq.Ft.1.396
PG Stack Static Pressure In.H,O -0.21
Pbp Sample Port Barometric Pressure In.Hg.Abs 24.73
Ps Stack Pressure In.Hg.Abs 24.715
Qs Stack Gas Volumetric Flow Rate (Std)dscfin 2.12E+03
Qa Stack Gas Volumetric Flow Rate (Actual)cfin 2.6IE+03
Vs Velocity of Stack Gas Ipm 1.87E+03
Curies Radionuclides persample pCi [.093E+05
Crad Concentration ofRadionucJides pCi/dscf 3.621E+02
ERrad Emission Rate of Radionuclides pCilbr 4.606E+07
;'1'''
d Grizzly
TABLE VI
COMPLETE RESULTS,PM
~DENISON MINES CORPORATION
GRJZZLY BAGHOUSE
~Symbol Description Dimensions Run #1
Date Date ]2130/08
Filter #5212
J Begin Time Test Began 9:14
End TimeTest Ended 17:20
Pbm Meter Barometric Pressure In.Hg.Abs 24.65
J t,H Orifice Pressure Drop In.H2O 1.510
Y Meter Calibration YFactor dimensionless 1.006
Vm Volume Gas Sampled--Meter Conditions cf 359.572
J T m Avg MeterTemperature of 88.9
-yt,P Sq Root Velocity Head Root In.H2O 0.1905
W4c Weight Water ColleCled Grams 30.6
J Tt Duration ofTest Minutes 480
Cp PitotTube Coefficient Dimensionless 0.84
D n Nozzle Diameter Inches 0.4405
J CO2 Volume %Carbon Dioxide Percent 0.00
O2 Volume %Oxygen Percent 20.90
N 2 &CO Volume %Nitrogen and Carbon Monoxide Percent 79.10
J Vmstd Volume Gas Sampled (Standard)dscf 287.960
Vw Volume WaterVapor scf 1.443
Bws Fraction H20 in Stack Gas Fraction 0.005
Xd Fraction ofDry Gas Fraction 0.995
M d Molecular WI.Dry Gas Ib/lbmol 28.84
M s Molecular WI.Stack Gas Ib/lbmol 28.78
%1 Percenl Isokinetic Percent 96.2
T s Avg Stack Temperature OF 52.2
As Stack Cross Sechonal Area Sq.Ft.1.917
1 PG Stack Static Pressure In.H2O -0.02
'I Pbp Sample Port Barometric Pressure In.Hg.Abs 24.62
Ps Stack Pressure In.Hg.Abs 24.619..
I Qs Slack Gas Volumetric Flow Rate (Std)dscfin J.I3E+03
'I
Qa Stack Gas Volumetric Flow Rate (Actual)cfin 1.34E+03,Vs Velocity ofStack Gas fpm 6.98E+02
Curies Radionuclides per sample pCi 1.21OE+01
Crad Concentration ofRadionuclides pCi/dscf 4.20IE-02
~ERrad 2.846E+03EmissionRateofRadionuclidespCiIhr
•
C AMENDED REPORT:UNIT CONVERSION
Sample Results Summary Date:10-Jun-G9..TestAmerica
Ordered by Method,Batch No.,Client Sample 10.
Report No.:41713 SDG No:39277
II ClientJd Tracer MOC or
Batch Work Order Parameter Result +.Uncertainty (25)Qual Units YIeld MDA CRDL RER2
II 90.72382 E2SS
5212
K8FOC1AC U-234 3.16E-06 +-8.23E-07 UCI/SA 89%3.60E-OB J
U-235 1.26E-07 +-6.99E·08 UCI/SA 89%3.17E-08
I U-238 2.B9E-06 +-7.S8E·O?UCIfSA 89%3.93E·08
9127501 E2SS
5210
I K8FX02AC U-234 6.5SE-03 +-2.35E-03 UCI/SA 106%9.22E-05
U-235 2.98E-04 +-1.56E-04 UCIISA 106%9.22E-05
U-238 6.50E-03 +-2.34E-03 UCIISA 106%7.3iE-OS
I 5211
K8FOA2AC U-234 8.93E-03 +-3.19E-03 UCI/SA 106%1.22E-04
U-235 3.35E-04 +.1.67E-04 UCIISA 106%7A6E-05
I U-238 9.56E-03 +-3.41 E-03 UCI/SA 106%9.42E-05
5213
K8FOD2AC U-234 5.36E-02 +-2.04E-02 UCffSA 99%1.96E-04
I U-235 2.09E-03 +-8.58E-04 UCI/SA 99%1.15E-04
U-238 5.36E-02 +-2.04E-02 UCIISA 99%1.86E-04
9072379 RICHCR5011
I 5210
KBFX01M TH-228 B.18E-07 +-1.35E-07 Uel/SA 631%1.57E-08
TH-230 l.68E-0?+-1.26E-07 UCIJSA 631%6.32E-09 3.00E-15
I TH-232 9.45E-09 +-6.12E-09 UCI/SA 631%6.32E-09
5211
K8FOA1M TH-228 a.20E-O?+-1.34E-07 UCI/SA 1140%8.84E-09
TH-230 B.99E-07 +-1.45E-07 .UCI/SA 1140%6.22E-09 3.00E-15
I TH-232 t07E-oa +-6.21 E-09 UCI/SA 1140%6.22E-09
5212
KBFOC1M TH-228 9.2DE-0?+-1.47E-07 UCI/SA 108%6.71E-09
I TH-230 1.51E-06 +-2.34E·07 UCJ/SA 108%4.83E-09 3.00E-15
TH-232 1.05E-OB +-5.64E-09 UCIJSA 108%4.83E-09
I 5213
K8FOD1M TH-228 8.54E-07 +-1.34E-07 UCI/SA 510%5.09E-09
TH-230 1.2BE-06 +-1.97E·07 UCI/SA 510%5.85E-09 3.00E-15
TH-232 1.32E-OB +-6.22E·09 UCI/SA 510%4.64E-09
t 9072376 RICHRC5011
5210
K8FX01AE PB-210 2.13E-05 +-4.50E·06 uel/SA 31%1.54E·06 6.00E-14
f 5211
TestAmerlca RER2 -Rcplicnte ErrorRullo ~(S.D)/!s'll·t(Sq(TPUs)+sq(TPUd))]as dcfincdby ICPT BOA.
I rplSTLRchSaSum
mary2V5.2.3
A200l
TestAmerica Laboratories,Inc.2
AMENDED REPORT:UNIT CONVERSION
SampleResults Summary
TestAmerica
Ordered by Method,Batch No.,Client Sample 10.
Date:10-Jun-09
Report No.:41713
ClientId
Batch Work Order Parameter
9072376 RICHRC5011
5211
KBFOA1AE PB-210
5212
K8FOC1AE PB-210
5213
KBFOD1AE PB-210
SOG No:39277
Tracer MOCor
Result +-Uncertainty (2s)Qual UnIts YIeld MDA eROl RER2
2.58E-05 +-5AOE·Oe UCIISA 38%1.31 E-06 6.00E-14
2.83E-06 +-8.61 E-O?UCI/SA 38%9.26E-07 6.00E-14
1.29E-06 +-G.42E-O?UCI/SA 44%9.26E-07 6.00E·14
9072377 RICHRC5005
5210
K8FX01AD RA-226 2.16E-07 +-i.08E-O?
5211
K8FOA1AD RA-226 3.34E-07 +-1.33E-07
5212
K8FOC1AD RA-226 1.58E-OB +-3.96E-07
5213
KBFOD1AD RA-226 3.25E-07 +-1.50E-O?
.~i t·t.('l'
No.of Results:32
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UCI/SA 96%1.21E-O?9.00E-14
UCIISA 97%1.20E-07 9.00E-14
UClfSA 98%i.15E-07 9.00E·14
UClfSA 99%i.8SE-O?9.00E-14
.~?).,()~I )/,",.,./1 'j?-,rP 05 ..)u~).).-():,0 "..4;"",),,IJ'Ii
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mary2 V5.2.3
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RER2 -HepliCllte ErrorRatio =(S-D)/lsqrt(s'lCfrUs)+sq(fPUd))(asdenncd by ICPT BOA.
TestAmerica Laboratories,Inc.3
I
~,,;AMENDED REPORT:UNIT CONVERSION
fI QC Results Summary Date:10-Jun-09
TestAmerica
~Ordered by Method,Batch No,QC Type,.
Report No.:41713 SDG No.:39277
~Batch Tracer LeS
Work Order Parameter Result +-Uncertainty (25)Qual Units Yield Recovery Bias MDCIMDA
E2SS
~9072382 BLANK QC,
KBH4K1AA U-234 2.B3E-08 t--3.46E-OB U UCI/SA 84%6.03E-08
,-,U-235 -2.?OE-09 t--1.40E-08 U UCI/SA 84%3.8iE-08
~U-238 8.0BE-09 -f--2A8E-08 U UCI/SA 84%6.03E-OB
9072382 LCS,
K8H4K1AC U-234 2.76E-06 +-7.58E-07 UCI/SA 6?%i61%0.6 4.29E-OB
U-235 8.77E-oa +-6.08E-08 UCI/SA 67%112%0.1 4.29E-08
~U-238 2.57E-05 +·7.i0E-O?UCI/SA 67%143%0.4 5.06E-08
E2SS
9127501 BLANK QC.
I lCJ9E1AA U-234 4.35E-08 +-4.91E-08 U UCl/SA 96%8.DiE-OB
U-235 -1.09E-OB +-3.08E-08 U UCI/SA 96%B.OiE-OB
U-23B 3.27E-08 +-4.89E-08 U UCI/SA 96%8.DiE-OB,9127501 LCS.
LCJ9E1AC U-234 3.56E-Q6 +-6.74E-07 UCl/SA 104%90%-0.1 7.47E-08
U-235 1.73E-07 +-9.68E-OB UCI/SA 104%96%0.0 9.43E-08
r>'~
J U-238 3.99E-06 +-7.42E-07 UCI/SA 104%97%0.0 9.43E-08
RICHCR5011
9072379 BLANK QG.,KBH371AA TH-228 9.97E-07 +-1.64E-OT UC/iSA 105%1.10E-08
TH-230 3.33E-09 +-4.1iE-09 U uel/SA 105%6.13E-09
,~~:TH-232 B.33E-10 +-2.36E-09 U UCI/SA 105%6.13E-09
1 9072379 LCS,
K8H371AC TH-228 8.61E-07 +-i.42E-07 UCI/SA 105%34%-0.7 1.05E-OB
TH-230 2.48E-06 +-3.92E-07 J uel/SA 105%108%0.1 7.26E-09
:~::;.TH-232 2.02E-09 +-3.03E-09 U Vel/SA 105%0%-1.0 4.97E-09
J RICHRC5011
9072376 BLANKQG.
K8H3i1AA PB-21 0 5.82E-07 +-5.74E-07 U UCI/SA 51%9.18E-07,9072376 LCS,
K8H3i1AC PB-210 1.23E-05 +-2.64E-06 UCI/SA 51%137%0.4 9.50E-07
RlCHRC5005,,~t:·,9072377 BLANKQC,
KBH34iAA RA-226 1.60E-08 +-5.23E-08 U UCI/SA 98%1.0iE-07
9072377 LGS.
t K8H341AC RA-226 1.13E-05 +-2.38E-06 UCI/SA 98%112%0.1 1.55E-OT
No.ofRosults:22
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maryV5.2.3 A2002
Bias -(ResultlExpeded)-l as defined by ANSI N13.30.
J Qual -Na UI<qualifier has been assigned and the resultis belowtheReporting Limit,RL (CRDL)orneportValue is Estimated.
U Qual -Annlyud 1'0"but not detected above limiting criteria.limit criteria is less thon theMdc/Mua 01'Total Vucerl or nol identifiedby
gamma ~cansofLwllrc.
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FIRST QUARTER
RADIONUCLIDE EMISSIONS TEST
CONDUCTED AT
DENISON MINES CORPORATION
NORTH YELLOW CAKE SCRUBBER
BLANDING,UTAH
March 18-19,2009
by:
TETCO
391 East 620 South
American Fork,UT '84M3
Phone [phone]
Fax [phone] fax
Prepared for;
Denison Mines Corporation
6425 S Hwy 91
Blanding,Utah 84511
Date ofReport:
June 11,2009
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TABLE IV NYC Scrubber
COMPLETE RESULTS
DENISON MINES CORPORATION,BLANDING,UTAH
NORTH YELLOWCAKE SCRUBBER EXHAUST
Symbol Description Dimensions Run #1 Run #2
Date 3/18/09 3119109
Filter #5234 523515236
Begin Time Test Began 8:34 7:46
End Time Test Ended 19:55 18:01
Pbm MeterBan,1metric Pressure In,Hg.Abs 24.60 24.55
~H Orifice Pres~ure Drop In.H2O 0.603 0.521
Y Meter Calibration Y Foetor dimensionless 1.000 1.000
Vm Volume Gas Sampled··MeterConditions ef 259.051 238.359
Tm Avg Meter Temperature "F 91.8 95.3
...j~p Sq Root Veloeil)'Heod Root In.H2O 0.2200 0.2153
Wtwc Weight Water Collected Grams 1876.0 1641.7
Tt Duration oftest Minutes 480 480
Cp Pilot Tube Coeffieient Dimensionless 0.84 0.84
Dn Nozzle Diameter Inches 0.3800 0.3800
CO2 Volume%Carbon Dioxide Percent 3.50 3.80
Oz Volume %Oxygen Percent 14.70 14.60
Nz&CO Volume%Nitrogen and Carbon Monoxide Percent 81.80 81.60
Vmstd Volume Gas Sampled (Standard)dsef 204.171 186.254
Vw Volume Water Vapor scf 88.453 77.406
Bws(measured)Frnction H10 in SlackGas (Measured)Fraction 0.302 0.294
Bws(sanualed)Fraction H20 in StackGas (Saturated)FmctiQn 0.214 0.238
Bws Frnction H20 in StackGas *Fraction 0.214 0.238
Xd Fraction ofDry Gas Fraction 0.786 0.762
Md Molecular WI.Dry Gns Ib/lbmoJ 29.15 29.19
M,Molecular WI.StackGas Ib/lbmol 26.76 26.53
%!Percent [sakinetic Percent 104.8 100.7 AVG
Ts Avg Sl~ck Temperatllre "F 135.7 139.6 137.7
As Slack CrossSectional Area Sq.FI.1.767 1.767
PG Slack Static Pressure In.H,O -0.040 -0.040
Pbp SamplePort Baromelric Pressure In.Hg.Abs 24.53 24.48
Ps Stack Pressure 111.Hg.Abs 24.527 24.477
Q.Slack Gas Volumelrie Flow ROle (Std)dscfm 9.11£+02 8.65E+02 8.88E+02
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Report No.:41714 SOG No.:39320
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Work9rder Paramoter Result +.UncertaInty (25)Qual UnIts YIeld Recovery Bias MDCIMDA
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Work Order Number:TtfC,)-7Q;;'til
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2.Custody Seals dated and signed?
'3.Chain ofCustody record present?
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ProjectManager Date._
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SECOND QUARTER
RADIONUCLIDE EMISSIONS TEST
CONDUCTED AT
DENISON MINES CORPORATION
NORTH YELLOW CAKE SCRUBBER
YELLOW CAKE DRYER BAGHOUSE
GRIZZLY BAGHOUSE
BLANDING,UTAll
May 19-21,2009
by:
TETCO
391 East 620 South
American Fork,UT 84003
Phone [phone]
Fax [phone] fax
Prepared for:
Denison Mines Corporation
6425 S Hwy91
Blanding,Utah 84511
Date ofReport:
August 6,2009
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I NYC ScrubberTABLEIV
COMPLETE RESULTS
DENISON MINES CORPORATION,BLANDING,UTAH
I NORTH YELLOWCAKE SCRUBBER EXHAUST
Symbol Description Dimensions Run #1 Run #2
I Date 5//9/09 5/20/09
Filter#5286/5287 5288/5290
Begin Time Test Began 9:55 8:12
I End Time Test Ended 19:22 16:39
Pbm MeIer BarometricPressure In.Hg.Abs 24.50 24.45
LlH Orifice Pressure Drop In.H2O 0.997 0.609
I Y Meter Calibration Y Factor dimensionless 1.006 1.006
Vm Volume Gas Sampled-Meter Conditions cf 263.918 237.989
Tm Avg MeterTernperature "F 90.4 88.2
I -VLlP Sq Root Velocity Head Roolln.H2O 0.2298 0.2951
Wt.vc Weight WaterCollected Grams 796.6 821.9
Tt Duration ofrest Minutes 421 480
I Cp Pilot Tube Coefficient Dimensionless 0.84 0.84
On Nozzle Diameter Inches 0.3915 0.3050
CO2 Volume %Carbon Dioxide Percent 3.30 3.60
I O2 Volume %Oxygen Percent 14.60 14.70
Nz&CO Volume %Nitrogen and Carbon Monoxide Percent 82.10 81.70
Vmstd Volume Gas Sampled(Standard)dscf 209.183 188.783
I Vw Volume Water Vapor scf 37.560 38.753
Bws(measured)Fraction H20 in Stack Gas (Measured)Fraction 0.152 0.170
Bws(saturated)Fraction H20 in Stack Gas (Saturated)Fraction 0.102 0.101
J Bws Fraction H20 in Stack Gas *Fraction 0.102 0.101
Xd Fraction ofDry Gas Fraction 0.898 0.899
Md MolecularWt.Dry Gas Ib/lbmol 29.11 29.16
I Ms Molecular WI.Stack Gas Ibllbmol 27.97 28.04
%1 Percentlsokinetic Percent 96.7 98.2 AVe
Ts AvgStack Temperdlure "F 108.7 108.2 108.5IAsStackCrossSectionalAreaSq.Ft.1.767 1.767
Po Stack StalicPressure In.H2O -0.050 -0.050
I Pbp Sample Port Barometric Pressure In.Hg.Abs 24.43 24.38
Ps Stack Pressure In.Hg.Abs 24.426 24.376
Qs Staek Gas Volumetrie Flow Rate (Std)dsefin 1.09E+03 1.39E+03 1.24E+03
1 Qa Staek Gas Volumetric Flow Rate (Actual)cfin 1.60E+03 2.05E+03 I.82E+03
Vs Velocity ofStack Gas !pm 9.03E+02 1.16E+03 1.03E+03
Curies Radionuclides per sample pei 2.667E+03 4.954E+03
1 Crad Coneentration ofRadionuclides pCi/dscf 1.275E+OI 2.624E+OI 1.949E+OJ
ERrad Emission Rate ofRadionuclides pCi/hr 8.307E+05 2.195E+06 I.5J3E+06
1 *Ifthe measured moisture content is greater than the saturated moisture level (supersaturated).
the saturated moisture value will be used in all calculations (40 eFR 60,Method 4,Section 12.1.7).
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TABLE V
COMPLETE RESULTS,PM
DENISON MINES CORPORATION
YELLOW CAKE DRYER BAGHOUSE
Symbol Description Dimensions Run#l
Date Date 5/20/09
Filter#5289
Begin Time Test Began /7:21
End Time Test Ended 19:12
Pbm Meter Barometric Pressure In.Hg.Abs 24.45
,1.H Orifice Pressure Drop In.H20 1.763
Y Meter Calibration Y Factor dimensionless 1,006
Vm Volume GasSampled--Meter Conditions cf 88.339
Tm Avg Meter Temperature of 85.7
V,1.P Sq Root VelocityHead Root In.H2O 0.5866
Wtwc Weight WaterCollected Grams 11.6
T t Duration ofTest Minutes 105
Cp Pitot Tube Coefficient Dimensionless 0.84
Dn Nozzle Diameter Inches 0.2765
CO2 Volume %Carbon Dioxide Percent 0.00
O 2 Volume %Oxygen Percent 20.90
N2 &CO Volume %Nitrogen and Carbon Monoxide Percent 79.10
Vmstd Volume Gas Sampled (Standard)dscf 70.639
Vw Volume Water Vapor scf 0.547
Bws Fraction H20 in Stack Gas Fraction 0.008
Xd Fraction ofDry Gas Fraction 0.992
M d Molecular WI.Dry Gas Ib/lbmol 28.84
Ms Molecular WI.Stack Gas Ib/lbmol 28.75
%1 Percent Isokinetic Percent 95.1
Ts AvgStack Temperature OF 116.2
As Stack Cross Sectional Area Sq.Ft.1.396
Pa Stack Static Pressure In.H2O -0.21
Pbp Sample Pert Barometric Pressure In.Hg.Abs 24.38
Ps Stack Pressure In.Hg.Abs 24.365
Qs Stack Gas Volumetric Flow Rate (Std)dscfin 2.37E+03
Qa Stack Gas Volumetric Flow Rate (Actual)cfin 3.20E+03
Vs Velocity ofStack Gas /pm 2.29E+03
Curies Radionuclides per sample pCi 1.143E+03
Crad Concentration ofRadionuclides pCildscf 1.618E+OI
ERrad Emission Rate ofRadionuclidcs pCiIhr 2.300E+06
I Grizzly
TABLE VI
I COMPLETE RESULTS,PM
DENISON MINES CORPORATION
GRIZZLY BAGHOUSE
t
I Symbol Description Dimensions Run #1
Date Date 5/21/09
Filter#5291
I Begin Time Test Began 8:45
End Time Test Ended 10:51
Pbm Meter Barometric Pressure In.Hg.Abs 24.45
I ~H Orifice Pressure Drop In.H20 1.024
Y Meter Calibration YFactor dimensionless 1.006
Vm Volume Gas Sampled--Meter Conditions cf 78.611
I Tm Avg MeterTemperature of 87.7
';~P Sq Root Velocity Head Root In.H2O 0.1671
W1wc Weiglit Water Collected Grams 12.5
I Tt Duration ofTest Minutes 120
Cp Pitot Tube Coefficient Dimensionless 0.84
On Nozzle Diameter Inches 0.4405
I CO2 Vollune %Carbon Dioxide Percent 0.00
O 2 Volume %Oxygen Percent 20.90
N 2 &CO Volume %Nitrogen and Carbon Monoxide Percent 79.10
I Ymstd Volume Gas Sampled (Standard)dscf 62.492
Vw Volume Water Vapor scf 0.589
Bws Fraction H20 in Stack Gas Fraction 0.009
I X d Fraction ofDry Gas Fraction 0.991
M d Molecular W'-Dry Gas Ib/lbmol 28.84
Ms Molecular W'-Stack Gas Ib/lbmol 28.73
I %1 Percent Isokinetic Percent 99.4
Ts Avg Stack Temperature OF 89.5
I As Stack Cross Sectional Area Sq.Ft.1.917
PG Stack Stalic Pressure In.H20 -0.02
Pbp Sample Port Barometric Pressure In.Hg.Abs 24.42
1 Ps Stack Pressure In.Hg.Abs 24.419
Qs Stack Gas Volumetric Flow Rate (Std)dscfin 9.49E+02
Qa Stack Gas Volumetric Flow Rate (Actual)clio 1.22E+03
1 Vs Velocity ofStack Gas fpm 6.37E+02
Curies Radionuclides per sample pCi 7.320E-01
Crad Concentration ofRadionuclides pCi/dscf 1.17lE-02
1 ERrad Emission RateofRadionuclides pCi/hr 6.669E+02
,
1
J Sample Results Summary Date:30-Jul-09
TestAmerica
J
Ordered by Method,Batch No.,Client Sample ID,
Report No.:42055 SDG No:39849
Client Id Tracer MOe or
Balch Work Order Parameter Result+.UncertaInty(2s)Qual Units Yield MOA CROL RER2
9161567 E2SS
R1 5286 5287 FILTERS AND
BEAKE
LEAK51AC U-234 1.29E-03 +.2.77E-04 UCI/SA 95%5.59E-05 9.OOE-iS
U-235 7.1OE-05 +-4.34E-05 UCI/SA 95%2.88E-05 9.OOE-15 ./U-238 1.30E-03 +-2.78E-04 UCI/SA 95%4.94E-05 9.00E-i5
R1 5291 FILTERAND BEAKERS
LEHJMiAO U-234 i.0iE-05 +-2.67E-05 V VOl/SA 97%6.25E-05 9.ODE-i5
U-235 -i.26E-06 +-i,40E-05 U UCJJSA 97%4.92E-05 9.00E-i5 L/
U-238 i.26E·05 +-2.65E-05 U UOI/SA 97%5.85E-05 9.00E-iS
R2 52665290 FILTERS AND
BEAKE
lEHH91AC U-234 2.42E·03 +-4.73E-D4 UCI/SA 93%3.D8E-D5 9.00E·i5
U-235 1.27E·04 +-6.13E-D5 UCI/SA 93%3.08E-05 9.ODE-i5 --"
U-238 2AOE-03 +-4.70E-04 VOl/SA 93%3.08E-D5 9.0DE-i5
9196168 E2SS
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LEHJK2AC V-234 5.31 E-04 +.1,41E-04 UCI/SA 100%4.99E-05 9.00E-1S
U-235 2.90E-05 +-2,B1E-05 V UCI/SA 100%3.83E-05 9.OOE-iS .-/
U-238 6.03E-04 +.1,54E-04 UClfSA 100%4.99E-D5 9.00E-i5
9161565 RICHCR5011
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BEAKE
LEAK51AA TH-228 2.67E·09 +-9.25E-09 U UOI/SA 55%i.96E-08 3.0DE-15
TH-230 2.i9E-06 +-3.88E-07 UCI/SA 55%i.85E-DB 3.00E·15 ../
TH-232 2.52E-09 +-8.74E-D9 U UOI/SA 55%1.85E-08 3.00E-15
R1 5289 FILTER AND BEAKERS
LEHJK1AA TH-228 1.03E-08 +-1.17E-08 U UCI/SA 57%i.9DE-DB 3.0DE-i5 /TH-230 a.20E-06 +-1.37E-D6 UCIISA 57%1.8GE-Da 3.0DE-i5
TH-232 i.96E-08 +-i.50E-OB UCIISA 57%1.80E-OB 3.0DE-i5
R1 5291 FILTERAND BEAKERS
lEHJM1AA TH-228 2.43E-09 +-i.29E-08 U UCI/SA 61%2.61E-OB 3.0DE-i5 ,/
TH-230 4.1iE-07 +-9.i0E-08 UCI/SA 61%1.69E-OB 3.0DE·15
TH-232 6,89E-D9 +.9.26E-09 U UCI/SA 61%i.69E-OB 3.0DE-i5
R2 5288 5290 FILTERS AND
BEAKE
LEHH91AA TH·228 1,03E-OB +-9.8BE-D9 V UCI/SA 90%1.27E-08 3.00E-15
TH·230 1.92E·06 +.3.26E-07 UClfSA 90%i.20E-OB 3,ODE-1S ./
TH-232 8.14E-09 +-B.OBE-D9 U UClfSA 90%1.20E-OB 3,OOE-iS
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TestAmerica Laboratories,Inc.7
Report No.:42055
9161563 RICHRC5011
R1 5286 5287 FILTERS AND
BEAKE
LEAK51AE PB-2i0
R1 5289 FILTER AND BEAKERS
LEHJK1AE PB·2i0
R1 5291 FILTER AND BEAKERS
LEHJM1AE PB·2i0
R2 5288 5290 FILTERS AND
BEAKE
LEHH91AE PB-210
9161564 RICHRC5Q05
R1 5286 5287 FILTERS AND
BEAKE
LEAK51AD RA-226
R1 5289 FILTER AND BEAKERS
LEHJK1AD RA-226
R1 5291 FILTER AND BEAKERS
LEHJM1AD RA-226
R2 5288 5290 FILTERS AND
BEAKE
LEHH91AD RA-226
2.14E-07 +-1.29E·07 UCIISA 86%1.64E-07 9.OOE~14
5.76E-08 +-9.73E-08 U UCI/SA 88%1.71E-07 9.DOE·14 /
3.21 E-07 +-1.45E-07 UCI/SA 91%1.56E-07 9.00E-14 J
i.39E-07 i--1.17E-07 U UCI/SA 89%1.77E-07 9.00E-14
3.32E-06 +.7.98E-07 UCI/SA 77%5.96E·07 6.00E-14 /
5.73E-07 +-3.39E-07 UCIISA 70%5.05E·07 6.00E-14 ./
6.i3E·O?+-4.23E-07 U UCI/SA 63%6.51 E-O?6.00E-14 ./
4.64E-06 +.i.07E·06 UCIISA 6?%6.63E-O?6.00E-14 /"
RER2CRDL
Date:30-Jul-09
SDG No:39849
Tracer MOe or
Yield MDAResultt.Uncertainty (2s)Qual Units
Sample Results Summary
TestAmerica
Ordered by Method,Batch NO'1 Client Sample ID.
Parameter
Clfent Id
Batch Work Order
1
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J./4"t7'7 &-)
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rptSTLRchSaSum
mary2 V5.2.3
A2002
REIU -Replicate ErrorHntio =(S-D)/(sql·t(sq(fPUs)+sq(f!'Ud)))os denned by ICPT aDA.
UQual-Analy-.ted for butnot detected above limiting criteria.Limit cI'llerio Is less tholl the Mdc/Mda 01'Total Unee''!or 1I0tIdentified by
gamma scansoftware.
TestAmerica Laboratories,Inc.8
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QC Results Summary Date:30-Jul"()9
TestAmel'ica
Ordered by Method,Batch No,QC Type..
Report No.:42055 SDG No.:39849
Batch Tracer Les
Work Order Parameter Result +.UncertaInty (2$)Qual Units Yield Recovery Bias MDCIMDA
E2SS
9161567 BLANK ac,
LENM91M U-234 -1.32E-08 +-2.66E-D8 U UCI/SA 91%8.65E-08
U-235 -6.6DE·09 +-1.57E-08 U UCI/SA 91%6.12E-08
U-238 7.91E-09 +-3.48E-08 U UCI/SA 91%8.51E-OB
9161567 LeS,
LENM9iAC U-234 3.28E-06 +-7.78E-07 UCI/SA 92%101%0.0 6.28E-0a
U-235 1.41 E-07 +.B.8BE-08 UCI/SA 92%95%0.0 3.70E-08
U-238 3.50E-06 +-8.26E-07 UCI/SA 92%103%0.0 5.37E-08
E2SS
9196168 BLANK OC.
LGHG51AA U-234 6.00E·D9 +.2.89E-08 U UCI/SA 104%7.20E-oa
U-235 2AOE-09 +-i.83E-08 U UCI/SA 104%5.i5E-08
U-238 2.04E·08 +.3.09E-OB U UCI/SA 104%6.12E-08
9196168 Les,
LGHG51AC U-234 2.99E-06 +-7A7E-07 UCI/SA 99%91%-0.1 4.99E-08
U-235 1.i3E-07 ·r·5.92E-OB UCI/SA 99%75%-0.2 3.43E-08
U-238 3.35E-06 +-8.31 E-07 UCI/SA 99%97%0.0 4.47E-08
RICHCR5011
9161565 Les.
LENM31AC TH-230 2.39E·06 +-3.97E-07 UCI/SA 69%104%0.0 1.27E-08
RICHRC5011
9161563 les.
LENMT1AC PB·210 1.23E-05 +-2.55E·06 UCIISA 73%137%0.4 5.90E-07
RlCHRC5005
9161564 LCS.
LENM01AC RA-226 1.15E-05 +·2.47E-06 UCI/SA 88%114%0.1 2.0BE-07
No.ofResults:15
TestAmarlca Ilias -(Rl!SIIItIEx(lcded}-l as defined by ANSI N13.30.
rptSTlRchQcSum U Qual -Analyzed for bnl not tletected ahove Ilmlllllg criteria.Limit c,'iteda is less then the Mdc/Mda 01'Tolal Uneerl ornot Itlenllfled by
mary V5.2.3 A2002 gamma sc.n sortwOl·C.,TestAmerica Laboratories,Inc.9
DlUgUnpUnv
n0
I-'I-'I-'I-'I-'I-'.....I-'I-'.....0 0 0 0 0 0 0 0 00 0 0 0 0 0 ::l 0 0m m m m m m :E rr'm~6 6 6 6 6 0 I-'60~00 -.J 0'>VI 0 0 ~
10/1/1986 c..10/1/1986~
10/1/1987 Ql 10/1/1987'":::T
10/1/1988 Vl 10/1/1988c:'"10/1/1989 "'C 10/1/1989(l)
::l
10/1/1990 c..10/1/1990(l)c..
10/1/1991 2 10/1/1991c:n10/1/1992 a:10/1/1992
(l)
10/1/1993 '"10/1/1993c:
10/1/1994 n 10/1/1994.:::::
10/1/1995 3 10/1/1995
10/1/1996 10/1/1996
10/1/1997 10/1/1997
10/1/1998 10/1/1998
10/1/1999 10/1/1999
10/1/2000 10/1/2000
10/1/2001 10/1/2001
10/1/2002 10/1/2002
10/1/2003 8+10/1/2003
10/1/2004 -10/1/2004
10/1/2005 m~10/1/2005
10/1/2006 10/1/2006
10/1/2007 ++t-
;'J -l CCJ:::T ZNIN»N OJ0'>0 -l
n0
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ENERGYLABORATORIES,IIJlll.•2393Salt CreekHighway (82601)•po.Box 329cB.·Casper,WY82802
TNI Free 888.235.0515 •J07.2s:,·15 •Fax [phone] •casper@energylab.c0fl(..YW.energylab.com
ANALYTICAL SUMMARY REPORT
March 25,2009
Denison Mines (USA)Corp
6425 S Hwy 191
Blanding,UT 84511
Workorder No.:C09030647
Project Name:Surface Water Cottonwood Creek
Energy Laboratories,Inc.received the following 1 sample for Denison Mines (USA)Corp on 3/20/2009 for analysis.
Sample ID Client Sample ID Collect Date Receive Date Matrix Test
C09030647-001 Cotlonwood Creek 03118/09 13:45 03/20/09 Aqueous Solids,Total Dissolved
Solids,Total Suspended
As appropriate,any exceptions or problems with the analyses are noted in the Laboratory Analytical Report,the
QAlQC Summary Report.orthe Case Narrative.
if you have any questions regarding these tests results,please call.
Report Approved By:~"'~WcJLhof
~
ENERGYLABORATORIES,we..2393 Sail CreekHighway(82601)•PO Box325B·Casper,WY82602
7011Free 888235.0515 •307.2:<:,»15 •Fax 307.234J639 •[e-mail]('m.energylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab ID:
ClientSample 10:
Denison Mines (USA)Corp
Surface Water Cottonwood Creek
C09030647-001
Cottonwood Creek
Report Date:03/25/09
Collection Date:03/18/0913:45
DateReceived:03/20109
Matrix:Aqueous
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date I By
PHYSICAL PROPERTIES
Solids.Tolal Dissolved TDS @ 180 C 423 mgll 10 A2540 C 03/23/09 12:35/dd
Solids.Total Suspended TSS @ 105 C 20 mglL 1 A2540 D 03/23/09 09:05 1dd
Report
Definitions:
Rl -Analyte reporting limit.
QCL -Quality control limit.
MGl -Maximum contaminant level.
ND •Not detected at the reporting limit.
ENERGYLABORATORIE~flIIC.•2393Salt CreekHighway(82801)•P.o.Box 3258.Casper,WY82802
TollFree 888.235.0515 •307.23;15 •Fax [phone] •[e-mail](.'llW.energy/ab.com
OAlcrc-Summary Report
Client:Denison Mines (USA)Corp
Project:Surface Water Cottonwood Creek
Report Date:03/25/09
Work Order:C09030647
Analyte
Method:A2540 C
Sample ID:LCS1_090323
Solids,Total Dissolved TDS @ 180 C
Sample10:MBLK1_090323
Solids,Total Dissolved TDS @ 180 C
Sample 10:C09030629·008AMS
Solids,Total Dissolved TDS @ 180C
Sample 10:C09030629·008AMSD
Solids,Total DissolvedTOS @ 180C
Method:A2540 D
Result Units
Laboratory Control Sample
992 mg/L
Method Blank
NO mg/L
Sample Matrix Spike
2310 mg/L
Sample Malrix Spike Duplicate
2360 mg/L
Rl %REC low Limit High Limit RPD RPDlimil Qual
Batch:D9D323_1_SLDS-TDS-W
Run:BAL-1_D90323B 03/23/09 12:28
10 99 90 110
Run:BAL-1_090323B 03/23/0912:29
6
Run:BAL-1_090323B 03/23/09 12:34
10 99 90 110
Run:BAL-1_090323B 03/23/09 12:34
10 102 90 110 2.1 10
Batch:090323A-SLDS-TSS-W
Sample10:C09030666·002ADUP
Solids,Total SuspendedTSS @ 105 C
Sample Duplicate
4.00 mg/L
Run:BAL-1_090323A
1.0
03/23/0909:08
25
Sample10:MBLK2_090323A
Solids,Total SuspendedTSS @ 105 C
Qualifiers:
RL •Analyte reporting limit.
Method Blank
NO mg/L
Run:BAL-1_090323A
0.7
NO -Not detected at .he reporting limiL
03/23/09 09:09
&rm&fa-Tinklen "'L.t;Jo\..;J~f'""f\.1t~...rt UYJut::i:1~IJIU\..oIl UUVIUIc:lUUII Q~V.::o;:"UJIIl;::,
Company Name:Project Name,PWS,Permit,Etc.Sample Origin EPNState Compliance:
'DC.lI;::>Of\M~()e.-~::>",,$"-<..c:...~.:-..}<:.r C.Qfu()~c......cc~-
State:(.)('\Yes 0 No 0
Report Mail Address:r-O f-x:'>X ~O1.Contact Name:Phone/Fax:Email:Sampler:(Please Print)
B1t\l\A~l"~I 1.\\'6!i~1 \Rf\l'-A ?o-\Il'\c.r ~1~(7t J;l.~\r:-~,,-l'\Rlmcr
Invoice Address:\)Invoice Contact &Phone:Purchase Order:QuotelBottle Order:
~c...~,,-D{AIl~~'1:rK G.7~~':d-,\
Special Report/Formats -ELI must be notified &J:ill&[1W@O@ OOrn@!JDrn@lJ'rnlID Contact ELI prior to Shipped by:
Ji.-Ill---11priortosamplesubmittalforthefollowing:0 (j;R RUSH sample submittal
for charges and CoolerID(s):~co mE r:=-:g>}ilOI Cl ~scheduling -See
IrADflAcJr-Cf)0 >.LU Instruction Page~$:~rn :::c "0 U
DDW DA2LA 8<l:'B~0 c:Comments:R"c":5!emp °c::>
DGSA D EDD/EDT(Electronic Data)'0 (l5~ICi5)~eJ-,~gr::::::III on~D POTWfWWTP Format:i';;;~I~l-E SDState:o LEVEL IV «~es No:E~II LU (ij CustodYSealQ)NoOther:D NELAC ~>1 UJ E Ii Bottlesl e(Sl
V"VI (j)0 CoolersZ ~~~Intact Y N
SAMPLE IDENTIFICATION Collection Collection MATRIX Signature QN(Name,Location,Interval,etc.)Date Time Match
1 1/'/C,.ttal1 'Ncu\c..rce..Y"3-I~.;).Dot{13 LJ5",W 1~{eAl)3 {)(o4i
2 I~
3 \Q)
nnn
4 ~
5 \1=~
6 ~
7 ~,".,
!
6 ~0
9 Lfci~
10 ,:J
Custody ~UIShed by(print):Datemme:.:).~~s~atu:l f)f1 (J Received by (print}:Datemme:Signature:
'-'\l\!.r'·1.:1"il'A"."3./4.:10D'\Record Relinquished by (print}:0 Dalemme:signature:V Received by (print):DatefTime:Signature:
MUST be
Signed Ir~elJ)!Y'ooralDry:Datemme:Signature:
Sample DisDosal:Return to Client:Lab Disposal:./_..(/.~.""·-t:'0OJ t7:cr;/
In certain circumstances,samples submitted to Energy Laboratories,Inc.may be subcqntracted to other certified laboratories in order to complete the analysis requested.
This serves as notice of this possibility.All sub-contract data will be clearly notated on your analytical report.
Visit our web site atwww.energylab.com for additional information,downloadable fee schedule,forms,and links.
(-
Energy Laboratories Inc
Workorder Receipt Checklist
Denison Mines (USA)Corp
c·.
IIIIIIIIII~111111111111111111I1111111~~III~1111 1111
C09030647
login completed by:Kristina Ward
Reviewed by:
Reviewed Date:
Date and Time Received:3/20/20099:00AM
Received by:pb
Carrier name:Next Day Air
Shippingcontainer/coolerin goodcondition?
Custodyseals intact on shipping container/cooler?
Custody seals intacton sample boWes?
Chain ofcustody present?
Chain of custodysigned when relinquished and received?
Chain of custody agrees with sample labels?
Samples in propercontainerlbotUe?
Sample containers intact?
Sufficient sample volume for indicatedtest?
All samples receivedwithin holding time?
Containerrremp Blank temperature:
Waler-VOA vials havezero headspace?
Water-pH acceptable upon receipt?
Contact and Corrective Action Comments:
None
Yes I{]
Yes I{]
Yes D
Yes 0
Yes 0
Yes 0
Yes 0
Yes 0
Yes 0'
Yes [{)
2°C On Ice
Yes 0
Yes 1{1
No D
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No D
No D
No D
No D
NotPresent D
NotPresent D
Not Present 0
No VOA vials submitted [{'I
NotApplicable 0
ENERGYLABORATORIES.{!!fr:.•2393 Salt Creek Highway (82801)•P.o.Box325'-?;·Casper,WY82802
lOllFree 888.235.0515 •307.2j,.15'Fax [phone] •[e-mail]{\vw.energylab.com.__.:..;,.
CLIENT:Denison Mines (USA)Corp
Project:Surface Water Cottonwood Creek
Sample Delivery Group:C09030647
ORIGINAL SAMPLE SUBMITTAL(S)
All original sample submittals have been returned with the data package.
Date:25-Mar-09
CASE NARRATIVE
SAMPLE TEMPERATURE COMPLIANCE:4°C (±2°C)
Temperature ofsamples receIved may not be considered properly preserved by accepted standards.Samples that are hand
delivered immediately after collection shall be considered acceptable ifthere is evidence that the chilling process has begun.
GROSS ALPHA ANALYSIS
Method 900.0 forgross alpha and gross beta is intended as a drinking water method for low TDS waters.Data provided by
this method for non potable waters should be viewed as inconsistent.
RADON IN AIR ANALYSIS
The desired exposure lime is 48 hours (2 days).The time delay in returning the canister to the laboratory for processing
should be as short as possible to avoid excessive decay.Maximum recommended delay between end of exposure to
beginning of counting should not exceed 8 days.
SOIUSOLJD SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE,SIMAZINE AND PCB ANALYSIS USING EPA 505
Data for A[razine and Simazine are reported from EPA 525.2,notfrom EPA 505.Data reported byELI using EPA method
505 reflects the results for seven individual Aroclors.When the results for all seven are ND (not detected),the sample
meets EPA compliance criteria for PCB monitoring.
SUBCONTRACTING ANALYSIS
Subcontracting ofsample analyses to an outside laboratory may be reqUired.If so,ENERGY LASORATORIES will utilize its
branch laboratories orqualified contract laboratories forthis service.Anysuch laboratories will be indicated within the
Laboratory Analytical Report.
BRANCH LABORATORY LOCATIONS
eli-b -Energy Laboratories,Inc.-Billings,MT
eli-g -Energy Laboratories,Inc.-Gillette,WY
eli-h -Energy Laboratories,Inc.-Helena,MT
eli-r -Energy Laboratories,Inc.-Rapid City,SO
eli-t -Energy Laboratories,Inc.-College Station,TX
CERTIFICATIONS:
USEPA:WY00002;FL-DOH NELAC:E87641;California:02118CA
Oregon:WY200001;Utah:3072350515;Virginia:00057;Washington:C1903
ISO 17025 DISCLAIMER:
The results ofthis Analytical Report relate only to the items submitted for analysis.
ENERGY LABORATORIES,INC.-CASPER,WY certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities.Some results requested bythe client may not be covered
under these certifications.All analysis data to be submitted forregUlatory enforcement should be certified in the sample
state of origin.Please verify ELI's certification coverage byvisiting www.energylab.com
ELI appreciates the opportunity to provide you with this analytical service.Foradditional information and services visit our
web page www.energylab.com.
THIS IS THE FINAL PAGE OFTHE LABORATORY ANALYfJCAL REPORT
(.
'>..
..
White Mesa Mill -Standard OperatingProcedures
Book#11:Environmental Protection Manual,Section 2.1
Date:2/07 Revision:DUSA-I
Page 5 of5
Attachment A
FIELD WATER ANALYSIS SURFACE WATER
WHITE MESA MILL
LOCATION (Circle O~:Od c;Lwestwater Canyon Other (describe)_
DATE::5 ./V·2()OCj
I BY:12/~A l1dfJ1t/1..
(Samplerfs initials)
pH BUFFER 7.0 7·0 pH BUFFER 4.0 Y()
SPECIFIC CONDUCTIVITY 1f f J.lMHOs
pH ofWATER _"-:5_......:."'1-..1.1 _c.
STEAM DEPTH:5'-'i 5/\/c-lze.s
TEMP )6·12
COND /lmhos -;tiltf,
pH Units 6.7-/
TempoC II,/2
COND J.L,~mh~os,,--_
pH units _
Temp DC _
COND J.L'~mh~os~_COND J.L=mh=o=s'--_
pH units _pH units _
Temp DC _Temp DC _
Comments:4:
't1.4 /it/If !JNe;SC7../4?V~;',-;LJ./ko·j<./Va<!~;f;('/'/I vL
t'CW\-~gae(c:t;;;;;:1 1~~Vf dm '~L7/~__4r"/cLLU_
//-/J
••IE:/V f
9
ENERGYLABORAT0j1IE0 INC.,2383Salt Creek Highway (82601),P.D.{Jox3258 'Casper,WY82602
TO//F,ree 888.235.0515 r -:.235.0515,Fax [phone] •casper@energ(,:om.www.energy/ab.com
ANALYT/CAL SUMMARYREPORT
July 20,2009
Denison Mines (USA)Corp
6425 S Hwy 191
Blanding,UT 84511
Workorder No.:C09060212
Project Name:Semi-Annual Surface Water
Energy Laboratories,Inc.received the following 1 sample for Denison Mines (USA)Corp on 6/4/2009 for analysis.
Sample 10 Client Sample 10 Collect Date Receive Date Matrix Test
C09060212-001 Cottonwood 06/02/09 07:35 06/04/09 Aqueous Sample Filtering
Uranium,Dissolved
Uranium, Suspended
Digestion,Total Metals
Gross Alpha minus Rn222 and Uranium
Radium 226,Dissolved
Radium 226,Suspended
Thorium,Isotopic
Thorium,Suspended Isotopic
Solids,Total Dissolved
Solids.Total Suspended
As appropriate,any exceptions or problems with the analyses are noted in the Laboratory Analytical Report.the
QAlQC Summary Report,or the Case Narrative.
Ifyou have any questions regarding these tests results,please call.
Report Approved By:
~~
Report Proofing Specja~jst
ENERGYLABORATOflf£5,INC.·2393SaltCreek Highway (82601)•P.D.Box3258 •Casper,WY82602
TollFree 888.235.05t5 {r.235.05t5 •Fax [phone] •casper@energ{'Jom.www.energylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample 10:
Denison Mines (USA)Corp
Semi-Annual Surface Water
C09060212·001
Cottonwood
Report Date:07/20/09
Colfectlon Date:06/02/09 07:35
DateReceived:06/04/09
Matrix:Aqueous
Qualifiers RL
10 A2540 C 06{08/09 09:05 /emm
4 A2540 D 06104/0911:54/emm
0.0003 E200.B 06/09/0921 :04 I sml
0.0003 E200.B 06/09/09 17:49 {sml
E900.1 06/22/09 12:14/cgr
E9OO.1 06/22/0912:14 I cgr
E9aD.1 06/22/09 12:14/cgr
E903.0 06/15/09 22:45 Jjah
E903.0 06/1510922:451 jah
E903.0 06/15109 22:45 /jah
Eg07.0 06/1110913:45/dmf
E907.0 06/11109 13:45/dmf
E907.0 06/1110913:45 I dmf
E903.0 07/13/09 18:421trs
E903.0 07/13/0918:42/trs
E903.0 07113/0918:42/lrs
E907.0 0710910913:46/dmf
E907.0 07/09/09 13:46 I dmf
E907.0 07109/09 13:46/dmf
Analyses Result Units
PHYSICAL PROPERTIES
Solids,Total Dissolved TDS @ 180C 446 mg/L
Solids,Total Suspended TSS @ 105 C 33 mg/L
METALS·DISSOLVED
Uranium 0.0089 mg/L
METALS·SUSPENDED
Uranium ND mg/L
RADIONUCLIDES·DISSOLVED
Gross Alpha minus Rn &U 0.9 pCi/L
Gross Alpha minus Rn &U Precision (±)0.4 pCi/L
Gross Alpha minus Rn &U MDC 0.4 pCi/L
Radium 226 -0.05 pCI/L
Radium 226 precision (±)0.1 pCl/l
Radium 226 MDC 0.19 pCi/l
Thorium 230 0.01 pCi/l
Thorium 230 precision (±)0.1 pCi/L
Thorium 230 MDC 0.2 pCi/L
RADIONUCLIDES •SUSPENDED
Radium 226 -0.05 pCi/L
Radium 226 precision (±)0.07 pCi/L
Radium 226 MDC 0.1 pCilL
Thorium 230 0.03 pCi/l
Thorium 230 precision (±)0.1 pCi/L
Thorium 230 MOC 0.2 pCi/L
u
U
u
u
MCU
QCL Method Analysis Date /By
Report
Definitions:
RL -Analyte reporting limit.
QCL -Quality control limit.
MDe •Minimum detectable concentration
Mel·Maximum contaminant level.
ND -Not detected at the reporting limit.
U •Notdetected at minimum detectable concentration
£NERGYLABORATOB1fS-INC.•2393Salt CreekHighway(82601).Ro.Box3258 •Casper,WY82802
TollFree 888.235.0515 .(.).235.0515 •Fax [phone] •casper@energ{~om.www.energylab.com
QAlQC Summary Report
Client:Denison Mines (USA)Corp
Project:Semi-Annual Surface Water
Report Date:07/20/09
Work Order:C09060212
Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDlimil Qual
Method;A2540 C
Sample 10:MBLK1_090608
Solids.Total Dissolved TDS @ 180 C
Method Blank
ND mg/L
Run:BAL-1_090608B
6
Batch:090608_1_SLDS-TDS-W
06/08109 08:53
Sample Matrix Spike
2540 mg/L
LaboratoryControl Sample
990 mg/L
Sample MatrixSpike Duplicate
2570 mg/L
Sample 10:I.CS1_090608
Solids.Total Dissolved TDS @ 180 C
Sample 10:C09060201·014AMS
Solids.Total Dissolved TDS @ 180 C
Sample ID:C09060201·014AMSD
Solids.Total Dissolved TDS @ 180 C
Method:A2540 0
Sample 10:MBLK1_
Solids,Total Suspended TSS @ 105 C
Method Blank
ND mgfL
Run:BAL-1_090608B 06/08/09 08:53
10 99 90 110
Run:BAL-1_090608B OS/08109 09:03
10 101 90 110
Run:BAL-1_090608B OS/08/09 09:03
10 103 90 110 1.2 10
Batch:090604A-SLDS-TSS-W
Run:BAL-1_090604A 06/04109 11:46
0.7
Sample 10:LCS1_
Solids,Total Suspended TSS @ 105 C
Sample 10:C09060127.()08ADUP
Solids.Tolal Suspended TSS @ 105 C
Laboratory Control Sample
154 mg/L
Sample Duplicate
33.0 mg/L
4.0
4.0
77
Run:BAL-1_090604A
60 110
Run:BAL.1_090604A
3.1
0610410915:03
06104/09 11:49
25
Method:E200.8
Sample 10:MB-22638
Uranium
Sample ID:LCS2-22638
Uranium
Sample 10:C09060212-001DMS
Uranium
Sample 10:C09060212.001DMSD
Uranium
Method Blank Run:ICPMS4-C_090609A
0.0005 mg/L 7E-05
Laboratory Control Sampie Run:ICPMS4-C_090609A
0.107 mg/L 0.00030 107 85 115
Sample Matrix Spike Run:ICPMS4-C_090609A
0.0128 mg/L 0.00030 98 70 130
SampleMatrix Spike Duplicate Run:ICPMS4-C_090609A
0.0129 mglL 0.00030 99 70 130
Batch:22638
06109109 17:37
06/0910917:41
06109/09 17:53
06/09/0918:14
20
Qualifiers:
RL -Analyte reporting limit.
MDC -Minimum detectable concentration
NO -Not detected at the reporting limit.
ENERGYLABORATOfl(E~INC.•2393SaltCreek Highway (82601)•P.D.Box 3258 •Casper,WY82602
TollFree 888.235.0515 -(..•T.235.0515 •Fax [phone] •casper@energ{.'Jom·www.energylab.com
QAlQC Summary Report
Client:Denison Mines (USA)Corp Report Date:07f20f09
Project:Semi-Annual Surface Water Work Order:C09060212
Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual
Method:E200.8 Batch:R119331
S'lmple ID:LRB Method Blank Run:ICPMS4-C_090609A 06/09/09 12:01
Uranium ND mg/L 3E-05
Sample 10:LFB Laboratory Fortified Blank Run:ICPMS4-C_090609A 06/09{09 12:05
Uranium 0.0502 mg/L 0.00030 100 85 115
Sample 10:MB·22609 Method Blank Run:ICPMS4-C_090609A 06/09{09 21 :00
Uranium ND mglL 3E-05
Sample ID:CD906D212·001BMS Sample Matrix Spike Run:ICPMS4-C_090609A 06/09/09 21:08
Uranium 0.0513 mg/L 0.00030 85 70 130
Sample ID:C09060212-001BMSD Sample Matrix Spike Duplicate Run:ICPMS4-C_090609A 06/09/0921:12
Uranium 0.0511 mg/L 0.00030 84 70 130 0.5 20
Method:E900.1 Batch:GA-0243
Sample 10:MB-GA-0243 ~Method Blank Run:G5000VV_090619A 06/22/09 12:14
Gross Alpha minus Rn & U 0.8 pCi/L
Gross Alpha minus Rn &U Precision (±)0.4 pCi/L
Gross Alpha minus Rn &UMDe 0.4 pCi/L
Sample ID:LCS-GA-0243 Laboratory Control Sample Run:G5000VV_090619A 06/22/0912:14
Gross Alpha minus Rn &U 30.8 pCi/L 113 70 130
Sample 10:C09060300-001 AMS Sample Matrix Spike Run:G5000VV_090619A 06122/09 12:14
Gross Alpha minus Rn & U 35.9 pCi/L 91 70 130
Sample 10;C09060300-001AMSD Sample Matrix Spike Duplicate Run:G5000VV_090619A 06/22/0912:14
Gross Alpha minus Rn &U 33.2 pCi/L 81 70 130 7.7 21.6
Qualifiers:
RL -Analyle reporting limit.
MDe -Minimum detectable concentration
ND -Notdetected at the reporting limit.
ENERGYLABORATOINES,INC.·2393Salt CreekHighway (82801)•P.D.Box 3258 .Casper,WY82602
lO1!Free 888,235.0515 .(:235.0515 •Fax [phone] •casper@ene@;70m·www.energylab,com
QA/QC Summary Report
Client:Denison Mines (USA)Corp
Project:Semi-Annual Surface Water
Report Date:07{20!09
Work Order:C09060212
Analyto Count Rosul1 Units RL %REC Low Limit High Limit RPD RPDLimit Qual
Method:E903,O
Sample ID:MB-22638
Radium 226
Radium 226 precision (±)
Radium 226MDC
~Method Blank
-0.1
0.2
0.3
pCi/L
pCi/L
pCi/L
Run:BERTHOLD 770-1_0907028
Batch:R120811
07113/09 18:42
U
07/13/0918:42
U
Run:BERTHOLD 770-1_0907028
uCi/kg
uCi/kg
uCi/kg
Sample10:LCS·22638 Laboratory Control Sample Run:8ERTHOLD 770-1_090702B 07/13/0918:42
Radium 226 -0.23 pCi/L :1 70 130 US
-lesresponse Isoutside of lheacceptance range for this analysis,probably due to the analystforgetting to spike the sample.Since all other LCSs in the batch.the MS.an,
the MSDare acceptable the batch is approved.
Sample 10:MB·22846 J Method Blank
Radium 226 2E-07
Radium 226precision (±)1E-07
Radium 226MDC 3E-07
SampleID:LCS-22846
Radium 226
Laboratory Control Sample
1.6E-05 uCi/kg
Run:BERTHOLD 770-1_0907028
106 70 130
07113/09 18:42
07/13/0918:42
21.1
Run:BERTHOLD 770-1_0907028
70 130 5.677
Sample Matrix Spike Duplicate
5,8E-05 uCi/k9
Sample10:C09060845-001AMS Sample MatrIx Spike Run:BERTHOLD 770-1_0907028 07!13{0918:42
Radium 226 5.5E-05 uCi/k9 69 70 130 S
-Spike response is outside of the acceptance range for [his analysis.Since the LCS and the RPD for the MS MSD pair are acceptable.the response is considered to be
matrix related.The batch is approved.
Sample 10:C09060845·001AMSD
Radium 226
Sample ID:MB-22869
Radium 226
Radium 226 precision (±)
Radium 226MDC
1 Method Blank
-0.06
0.1
0.2
pCilL
pCi/L
pCi/L
Rlm:BERTHOLD 770-1_090702B 07/13/0920:20
U
Sample ID:LCS-22869
Radium 226
Laboratory Control Sample
11 pCilL
Run:BERTHOLD 770-1_0907028
76 70 130
07113/0920:20_
Method:E903.0
Sample 10:C09060329-001DMS
Radium 226
Sample Matrix Spike
9.42 pCi/L
Run:BERTHOLD 770-2_0906098
118 70 130
Batch:RA226·3736
06/16109 02:08
Sample ID:C09060329-001DMSD Sample Matrix SpIke Duplicate Run:BERTHOLD 770-2_090609B 06/16/0902:08
Radium 226 6.63 pCilL 83 70 130 35 31.3 R
•The RPDforthe MSD is high.The individual spike recoveries are within range,the MB Is acceptable.and the LCS iswithin range.therefore the batch is approved.
Sample 10:MS-RA226-3736
Radium 226
Radium 228 precision (±)
Radium 226 MOC
1 Method Blank
-0.09
0.08
0.2
pCI/L
pCi/L
pCi/L
Run:BERTHOLD 770-2_090609B 06/16/0902:08
U
Sample ID:lCS·RA226-3736
Radium 226
LaboratoryControl Sample
4.0 pCill
Run:BERTHOLD 770-2_0906096
105 70 130
06/16/09 02:08
Qualifiers:
RL -Analyte reporting limit.
MDe-Minimum detectable concentration
S •Spike recovery outside ofadvisory limits.
ND -Notdetected at the reporting limit.
R -RPD exceeds adVisory limit.
U -Not detected at min-Imum detectable concentration
ENERGYLABORATOpIES,INC.•2393SaJtCreekHighway(82601j ,P.O.Box3258 •Casper,WY82602
To!1Free 888.235.0515 .(..;235.0515 •Fax [phone] •casper@energj,'.,om·www.energyJab.com
QAlQC Summary Report
Client:Denison Mines (USA)Corp
Project:Semi-Annual Surface Water
Report Date:07/20{09
Work Order:C09060212
Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual
Method;E907.0
Sample ID:lCS.RA-TH-ISO·0829
Thorium 230
Sample 10:C09050953·009AMS
Thorium 230
LaboratoryControl Sample
4.7 pCilL
Sample Matrix Spike
11.0 pCi/L
Run:EGG-ORTEC_090608A
96 70 130
Run:EGG-ORTEC_090608A
90 70 130
Batch:RA·TH·ISO·0829
06/11{0908:50
06/11 {09 08:50
Sample ID:C09050953-009AMSD
Thorium 230
Sample MatrixSpike Duplicate
12.3 pCi/L
Run:EGG-ORTEC_09060BA
100 70 130 11
06{11/09 08:50
41.5
Sample ID:MB-RA-TH-ISO-0829
Thorium 230
Thorium230 precision (±)
Thorium 230 MOe
~Method Blank
-0.02
0.05
0.1
pCi/L
pCi/l
pCI/l
Run:EGG-ORTEC_090608A 06/11{09 13:45
U
Method:E907.0
Sample ID:C09060821-001AMS
Thorium 230
Sample Matrix Spike
26.7 pCifFiller
Run:EGG-CRTEC_090701A
117 70 130
Batch:RA·TH·lSO·OB40
07/09/09 09:35
Sample 10:C09060821·001AMSD
Thorium 230
Sample 10:LCS-22869
Thorium 230
Sample ID:MB·22869
Thorium 230
Thorium 230 precision (±)
Thorium 230 MOC
Sample Matrix Spike Duplicate
27.2 pei/Filter
Laboratory Control Sample
9.77 pCifFilter
~Method Blank
-0.4 pei/Filler
0.4 pei/Filter
0.6 pCi/Filter
Run:EGG-ORTEC_090701A
118 70 130 1.8
Run:EGG-ORTEC_090701A
S9 70 130
Run:EGG-ORTEC_090701A
07109/09 09:35
53.6
07/09/09 13:46
07{09/09 13:46
U
Qualifiers:
RL -Analyte reporting limit.
MDe -Minimum detectable concentration
ND -Not detected at the reporting limit.
U -Notdetected at minimum detectable concentration
,~*l!J
5Jij&tlC'T;"I@
-1-&.oLoon"",,,",11"11"-IIU'lJJ\At;O go;»IlIt04vll UIIVI'UQ~'''''Ug~V;,::,vIUJI;.
Company Name:•P~ect N~me,PWS,P8Jmintc.Sample Origin EPA/State Compliance:
Ue..Njs>....o1\1Y1.~".<:.,...')PAII-fL,11/Ji'>V,...\t.A",'/..-rtf'State:(J(]'Yes 0 No 0 ..
Report Mall Add;c,~~.:_~;~;/I 12::;malm~V'P:;;?al EmaH 12::(~::p,:tl
Invoice Address:(J I'~lnvoic'e Contact &Phone:Purchase Order:Qu6te/Bottie Order:
(.)Attl6 /:::::.A 6
Special Report/Formats -ELI must be notified &!Rl&[1,):7@O@ OO[3@lliJ~'IT'[3@)Contact ELI prior to .ShI7tA'f·P
Prior to sample submittal for the following:0 ...Ir»RUSH sample submittal -:~lIJ ",:5 ~";-I ft forcharges and CooTh!roes!.~>;g 01 ~0 ~scheduling -See 11 f~~~~:~~C!~;-u Instruction Page ('IIU'j)/-..
O DW 0 A2LA (,)«·o.~~~~0 §Comments:R~ce)ptTemp
-Qj~llIJl ~...~«0 c-r 0 coGSA0EDD/EDT(Electronic Data)~~2 c:::_~.....;A'~l-<u
O Cl)!'-ro 0 ""r-:~l-C S on~,JPOTWMflNTPFormat:~.!!2$I~.~•.\....;:"t"«!5 ~NooState:0 LEVEL IV ~~Ig,~,",...,~.£w !:;a CustotlySeal Q:l NoOther:0 NELAC Cf)>1 •/I Vi::-./".Q W §H Bottlesl C)v.V'I V:i ~-"7 'C/')0 CoolefS B ~.
4 ~e ..r-~...~..Z Intact !r NSAMPLEID.ENTIFICATION Collection Coll;sction MATRIX \-'\I~~...~.~Signature(~ame,LocatIOn,Interval,etc,}Date Time pc l/':V ~Match N
1(1..Ji.".J~IIJ ·;1.·2M1IFI$I-!AI )dX X X XX 'OiJtNoh..::lLJ ~U
2-•
3 g
nOM
4 ~
~
5 ,'=~..""'"
6 ~\".:'.':'"~".,:.
7 ~~
8 I~o
9 I~_.I~
10 It::::!
"Custody i:Z::byft.IY-../A la~e~rr:;'!JZ ~tur;?::.l Received by (print):Datemme:Signature:
M~~~r:e R~JJnqlished by{print):"1latefTime:/Ignalf.fre:Received by (print):Dalelltme:Signature:..-7 .,r
•,R':Jf'lve~byLaboratrY:Dale!J1~"I 01 .'.",:7SignedSampleDisposal;ReturntoClienl:Lab Disposal:1-.1,1,.L"o,.)I~.....£"(/(,'///10.'2 ::10//b---
This serves as notice of this possibility.All sub-contract data will beclearly notated on your analytical report.
Visit our web site al www.energylab.com for additional information,downloadable fee schedule,forms,and links.
Energy Laboratories Inc
Workorder Receipt Checklist
Denison Mines (USA)Corp
I11I111I~111111I1111111111111~IIIII~III ~III~fllill
C09060212
Login completed by:Kimberly Humiston
Reviewed by:
Reviewed Date:
Shipping container/coolerin good condition?Yes 0
Custody seals intacton shipping container/cooler?Yes 0
Custody seals intact on sample bottles?Yes 0
Chain ofcustody present?Yes 0
Chain ofcustody signed when relinquished and received?Yes 0
Chain ofcustody agrees with sample labels?Yes 0
Samples in propercontainer/bottle?Yes 0
Samplecontainers intact?Yes 0
Sufficient sample volume for indicated test?Yes 0
All samples received within holdingtime?Yes 0
ContainerfTempBlanktemperalure:4"C On Ice
Water -VOA vials have zero headspace?Yes 0
Water-pH acceptable upon receipt?Yes 0
Contact and Corrective Aclion Comments:
Date and Time Received:6/4/20099:30 AM
Received by:al
Carrier name:Next Day Air
No 0 NotPresent 0
No 0 Not Present 0
No 0 Not Present [;1
NoD
No 0
No 0
No 0
No 0
No 0
No 0
No 0 No VOA vials submitted [;1
No 0 NotApplicable 0
Samples were filtered and preserved in lab with 2mL HN03 for radiochemistry and metals analyses.
ENERGYLABORATOP/~~INC.·2393SaltCreek Highway (82601)•P.0.j30X3258 •Casper,WY82802
TOIl firee 888.235.0515 i:235.0515 •Fax [phone] •casper@energx ...7om·wwwenergylab.com
,-\'.,.:,:..'
CLIENT:Denison Mines (USA)Corp
Project:Semi-Annual Surface Water
Sample DeliveryGroup:C09060212
ORIGINAL SAMPLE SUBMIITAL(S)
All original sample submittals have been returned with the data package.
Date:20-Juf-Q9
CASE NARRATIVE
SAMPLE TEMPERATURE COMPLIANCE:4D C (±2DC)
Temperature ofsamples received may not be considered properly preserved by accepted standards.Samples that are hand
deuvered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun.
GROSS ALPHA ANALYSIS
Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters.Data provided by
this method for non potable waters should be viewed as inconsistent.
RADON IN AIR ANALYSiS
The desired exposure time is 48 hours (2 days).The time delay in returning the canister to the laboratory for processing
should be as short as possible to avoid excessive decay.Maximum recommended delay between end ofexposure to
beginning ofcounting should not exceed 8 days.
SOIUSOLlD SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE,SIMAZINE AND PCB ANALYSIS USING EPA 505
Data for Alrazine and Simazine are reported from EPA 525.2,notfrom EPA 505.Data reported by ELI using EPA melhod
505 reflects the resulls for seven individual Aroclors.When the results forall seven are NO (not detected),the sample
meets EPA compliance crileria for PCB monitoring.
SUBCONTRACTING ANALYSIS
SUbcontracting of sample analyses to an outside laboratory may be required.Ifso,ENERGYLABORATORIES Will utilize its
branch laboratories or qualified contract laboratories for lhis service.Any such laboratorieswill be indicated within the
Laboratory Analytical Report.
BRANCH LABORATORY LOCATIONS
e1i-b -Energy Laboratories,Inc.-Billings,MT
eli-g "Energy Laboratories,Inc.-Gillette,WY
eli-h -Energy Laboratories,Inc.-Helena,MT
eli-r -Energy Laboratories,Jne.-Rapid City, SD
eli-!-Energy Laboratories,Inc.-College Station,TX
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Oregon:WY200001;Utah:3072350515;Virginia:00057;Washington:C1903
ISO 17025 DISCLAIMER:
The resulls ofthis Analytical Report relate only to the items submitted for analysis.
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THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT
White Mesa Mill -Standard Operating Procedures
Book #II:Environmental Protection Manual,Section 2.1
Attachment A
Date:2/07 Revision:DUSA-I
Page 5 of5
FIELD WATER ANALYSIS SURFACE WATER
WHITE MESA MILL
LOCATION (Circle oneE~o~~estwaterCanyon Other (describe)_
DATE:?·:z·.zO()1
pH BUFFER 7.0 7.cJ
BY:._
(Sampler's initials)
pH BUFFER 4.0 L(()
SPECIFIC CONDUCTIVITY f /?IlMHOs
I L2 "2 itSTEAMDEPTH:-~
(pHofWATER _
.'-".-."~"'~'
COND !tmhos 750.1
pH Units 9>7tj
TempoC 15.5Q
COND flmhos 150 .:2
pH units ~:73
Temp °c 1:2,Sq
Comments:
TEMP _
COND fl=mh=oS"--_
pH units _...,...-_
Temp °c _
COND I-l:illh~os~_
pHunits _
Temp °C _
~::;;1~~;j~~Vir:m1 ~~t:;j~
f4l £Ju4t""J $.",1{).44·kd dl'l.2.
~,,~PH"'"j £:'.w 11Ii+I'mA/r ~rc7 ~
'"'
SEMI-ANNUAL EFFUENT REPORT
JULY 1,2008 THROUGH DECEMBER 31,2009
DENISOJ)~J
MINES
February 27,2009
Sent Via Federal Express
Mr.Dane Finerfrock
Executive Secretary,
Utah Radiation Control Board
Utah Department ofEnvironmental Quality
Division ofRadiation Control
Salt Lake City,Utah 84114-4850
Dear Mr.Finerfrock:
DInison....«USA)Corp.
1050 1711I StrNI,SlimISO
Denver,CO 10215
USA
Ttl:303121-7711
Fax:303Jlt.4125
Re:State of Utah Radioactive Materials License No.UTl90047·White Mesa Mill,Blanding
Utah
Semi-Annual Effluent Report (July 1,2008 through December 31,2008)
As required by Utah Administrative Code,R 313 24-4 (incorporating by reference 10 CFR 40.65
(subpart 1),and License Condition 11.3 A ofUtah Radioactive Materials License UT1900479,
enclosed is the semi-annual effluent monitoring report for the White Mesa Mill for the Period
July 1,2008 through December 31,2008.
If you should have any questions regarding this report,please contact Mr.David Turk at (435)
678-2221 or myself at [phone].
Yours very truly,
~;Jr~~:s~~MINES (USA)CORP.
Steven D.Landau
Cc Ron Hochstein
Harold Roberts (w/o attachments)
David Fryden1und
David Turk
White Mesa Uranium Mill
Radioactive Materials License UT900479
Semi-Annual Effluent Monitoring Report
(July through December,2008)
Prepared For:
Utah Department of Environmental Quality
Division ofRadiation Control
Prepared by Denison Mines (USA)Corp.
1050 17th Street,Suite 950
Denver,CO.80265
Febmary,2009
Introduction
The White Mesa Mill ("the Mill")has established monitoring programs to evaluate
compliance with effluent limitations and to assess the potential for release of radioactive
material into the local environment.These monitoring programs were developed and
implemented at the time of mill construction,operated with appropriate adaptation over
time,and remain consistent with the Mill's Radioactive Materials License and guidelines
developed by the Nuclear Regulatory Commission (U.S.N.R.C.Regulatory Guide 4.14,
Radiological Effluent and Environmental Monitoring at Uranium Mills-Rev.1,
ML003739941),1980).Accordingly,the Mill monitors the following environmental
media and conditions:
1)Airborne particulate radionuclide concentrations obtained from the following
sampling stations:
•North,East and South of the Mill Site:BHV-l &BHV-2 (not1h),BHV-5
(east),and BHV-4 (south)
•BHV-1 serving as a sUlTogate for the nearest resident,(i.e BHV-1 is
approximately 1.2 miles north of the Mill,but approximately 0.4 miles closer
to the Mill than the actual nearest resident)
• A background location distant to and west of the Mill (BHV-3),which was
monitored tor airborne patiiculate up until November,1995,at which time
background was established.
• A station specitlcally requested by the White Mesa Ute Community south of
the Mill Site (BVH-6)
2)External (direct)gamma radiation measured at air monitoring stations BHV-1,
BHV-2,BHV-3,BHV-4,BHV-5 and BHV-6.
3)Radon-222 is measured at air monitoring stations BHV-1, BHV-2,BHV-4,
BHV-5 and BHV-6
3)Vegetative uptake ofradionuclides at three site periphery locations
4)Stack release rates from the facility's air emissions sources
5)Surface water within the Cottonwood Creek and,when flowing,the Westwater
Creek drainage,both located west ofthe Mill
6)Soil radionuclide activity obtained neat·the air monitoring stations
7)Ground water (up and down gradient)ofthe Mill faci1ityl
This semi-annual effluent report provides the results of the specific monitoring and
sampling activities that were undertaken during the subject reporting period,including:
•Airborne patiiculate concentrations and radionuclide activity
•External radiation measurements
•Radon-222
•Vegetative radionuclide uptake
•Radionuclide release rates measured at the yellowcake stack and baghouse
•Surface water radionuclide content
•Soil samples at air monitoring stations
1 Ground water sampling is reported separately pursuant to the State of Utah Ground Water Discharge
Pennit No.UGW370004 and is not included with this report.
Table of Contents
Section Page
Introduction..............i
Table ofContents...... ... ...... ...... ......ii
1.0 Environmental Air Sampling
1.1 Program Overview......... ..............1
1.2 Sampling Protocol &Analytical Results................................1
1.3 General Observations......................................................2
1.4 Specific Sampling Station Data...........................................3
1.5 Radon-222...................................................................5
2.0 External Radiation (Direct Gamma)...............................................7
3.0 Vegetation Samples......................................................8
4.0 Stack Salupling.......................................................................8
5.0 Surface Water Monitoring..........................................................10
6.0 Soil Sampling.........................................................................10
7.0 Meteorological Monitoring...........................11
Attachments
Attachment A
Tab 1
Tab2
Tab 3
Tab 4
Tab 5
Tab 6
Attachment B
Attachment C
Attachment D
Attachment E
Attachment F
Attachment G
Attachment H
Attachment I
Sampling Station &Site Map
BHV-l Air Sampling Graphs &Data Table
BHV-2 Air Sampling Graphs &Data Table
BHV-3 Air Sampling Graphs &Data Table
BHV-4 Air Sampling Graphs &Data Table
BHV-5 Air Sampling Graphs &Data Table
BHV-6 Air Sampling Graphs &Data Table
Air Radionuclide Lab.Results and QA/QC
Air Particulate Loading Tables
Radon-222 Analytical Sheets
Environmental TLD Graph and data
Vegetation Graphs,Data Table,Lab.Results
Stack Sample Laboratory Results
Surface Water Lab.Results
Soil Sample Lab.Results
ii
1.0 Environmental Air Sampling
1.1 Program Overview
The environmental airborne particulate monitoring program at the White Mesa Mill ("the
Mill")currently utilizes five air sampling stations.Four high-volume continuous air
sampling stations (BHV-1,BHV-2,BHV-4,and BHV-5)are required by the Mill's
Radioactive Materials License.These sampling stations serve as sentinels for airbome
particulate which could potentially emanate fi'om the Mill site.In addition to its general
site monitoring function,location BHV-1 also serves as a conservative surrogate for
concentrations at the nearest resident,because it is located approximately 1.2 miles north
ofthe Mill just south ofthe nearest resident but between the Mill and that resident.With
regard to background monitoring,the Mill previously operated a continuous high-volume
air sampling station (BHV-3)which was located approximately 3.5 miles west of the
Milling operation.With the approval of the U.S.Nuclear Regulatory Commission and
effective November,1995,this station (BHV-3)was removed fi'om the active air
monitoring program.At that time,IUSA proposed (and the NRC detennined)that a
suflicient air monitoring data base had been compiled at station BHV-3 to establish a
representative airborne radionuclide background for the Milling facility.It should be
noted,however,that while air sampling was discontinued at this location,gamma
measurements,radon monitoring and soil sampling continue to be collected at BHV-3.
In addition to the environmental air sampling locations described above,a sixth station
(BHV-6)was installed at the request of the White Mesa Ute Community.This station
began operation in July of 1999 and provides airborne particulate infonnation in the
southerly direction between the Mill and the White Mesa Ute Community
1.2 Sampling Protocol and Analytical Results
Airborne particulate monitors are operated continuously at each of the high-volume air
sampling stations referenced above.Particulate sample collection filters are gathered by
site technicians weekly in accordance with the Mill's environmental air sampling
procedures and are composited on a quarterly basis for laboratory analyses.The
analytical parameters applied to the collected filters are:Uranium-Natural activity,
Thorium-230 activity,Radium-226 activity,and Lead-210 activity.In addition to the
requisite nuclide detelminations,particulate loading is detelmined for each filter and
composited as a quarterly mass-loading estimate for review purposes only.Fugitive dust
standards for the facility are limited by the Mill's State of Utah air quality pelmit,which
sets a 15-20%visual opacity standard depending on the activity.The specific locations of
the Mill's airborne patticulate monitoring stations are depicted on the attached figure,
High Volume Air Monitoring Stations (Attachment A).The analytical results of
radionuclide particulate sampling for each monitoring station operated dUling this July
through December,2008 reporting period are provided under separate sampling station
attachment tabs beneath Attachment A to this report (Tabs 1-6).Each Tab contains
graphical illustrations ofthe nuclide concentrations in log-scale presentation fonnat.The
graphs display repolted data over time since the 1981 inception of the Mill's
1
enviroillnental air monitoring program.The actual analytical results (and associated
QA/QC information)reported by the laboratory are provided under Attachment B.It
should be noted that for graphical illustration purposes,values rep01ted at zero,values
reported at less than the prescribed detection limit «1 x 10-16 uCi/ml)and missing
values were plotted as I x 10-16 uCi/ml concentrations.Where other "less than"values
were indicated (e.g.data where detection limits varied from I x 10-16 uCi/ml)the
detection limit concentration was utilized for plotting the data point.The reader should
also note that this graphing convention is not utilized to formulate station average
inf01mation,nor is it intended as a precedent for data treatment.Instead,the intent here
is to provide a conservative viewable depiction ofsite airbome nuclide information.The
conservative nature of this format is founded in the fact that the actual concentration
below the detection limit can not be determined and,as such,the plotted point is at a
higher concentration than the actual activity concentration ofthe collected sample.
In accordance with the above,the following enviroillnental air sample station attachments
are provided with this report for the period:
•BHV-1,Nearest Resident "Surrogate"Monitor
•BHV-2,North Monitor
•BHV-3,Background
•BHV-4,South Monitor
•BHV-5,West Monitor
•BHV-6,White Mesa Ute Community Monitor
•Radionuclide Data
•Particulate Loading Data
1.3 GcncnlObscrvations
Tab 1
Tab 2
Tab 3
Tab 4
Tab 5
Tab 6
Attachment B
Attachment C
The results ofenvironmental air monitoring for this semi-annual period indicate that for
all nuclides at all monitoring stations airbome radionuclide particulate activity
concentrations were well below regulatory Effluent Concentration Limits (ECL's)and
the Companies ALARA goals.It is noteworthy and expected that Pb-210 concentrations
are elevated when compared to the other parent nuclide concentrations (i.e.U-nat,Th-
230 and Ra-226).This phenomenon is due to the well-established controlling effect
experienced world-wide as a result of the ubiquitous presence of radon in the earth's
atmosphere.Accordingly,elevated Lead-210 presence in disequilibrium with parent
nuclides measured here is not associated with uranium milling operations.
Radon-222 emanates as a decay-chain progeny of the Radium-226 contained in the soil
of the ealths crust and is dispersed generally throughout the eal1h's atmosphere.The
electrically charged Sh011 and long-lived decay products of Radon-222 attach to ambient
dust particles found naturally in the atmosphere and are canied with the air.Lead-210 is
the longest lived of these decay products and is the decay product of the shorter-lived
radon progeny.As such,it accumulates as an electrical attachment on the natural
ambient dust in the atmosphere and is generally measured at elevated activity when
compared to local decay-chain parent nuclide activity,regardless of uranium milling
2
activity.At the Mill's BHV air monitoring stations,all dust (ambient natural and mill
derived)is collected by the sample filter.Because of the natural elevation of Pb-21 0
accumulated as an attachment to the naturally occurring ambient dust particles collected
by the air sampling equipment,Lead-210 is commonly elevated and in disequibrium
when compared to parent nuclide activity,regardless of the Mill's presence.By way of
illustration,average ground-level concentrations have been reported for selected States
(NCRP Report 94,1992)and are summarized in Table 1 below,demonstrating elevated
Lead-210 activity where no uranium milling operations are located nearby.Lead-210
activity concentrations can be expected to be even higher for locations in the western
U.S.where uranium ore bodies are commonly located.
Table 1-NCRP Report 94-Global Lead-210 Concentration Example
State Pb-210 Concentration
uBqlM.l uCi/ml
California 600 1.6E-14
Illinois lSOO 4.1 E-14
Ohio 300 S.IE-IS
Massachusetts 700 1.9E-14
1.4 Site Specific Sampling Data
The results of airbome particulate monitoring for the period (without background
subtraction)are provided by sampling station and nuclide in Tables 2-5 below.Along
with these data,the tables present comparative Effluent Concentration Limits (ECL's)
and the ECL percentage measured at each of the monitoring stations sampled during the
period.A review of these data supports the conclusion that airborne particulate is well
controlled at the Mill.More specif1cally,in all cases the measured activity concentrations
were well within the ECL,as well as the Mill's ALARA Goal (i.e.25%ofthe ECL).In
fact,the data obtained since program inception in 1981 indicates that only one individual
quarterly measurement (TH-230 at BHV-5 for the 2l1d Qtr,1996)has ever exceeded the
ECL at the Mill.With regard to this particular single measurement,while it is important
to consider and evaluate an individual measurement exceeding the ECL,for public dose
estimation purposes it is the annualized data that are of primary significance.In this
instance,the annualized Th-230 data for BHV-5 in 1996 are well below the ECL for the
annual period.
In addition to these observations,evaluation of the data by comparison to the Mill's
ALARA Goals reveals that,with very few exceptions,the gross (background inclusive)
measurements also do not exceed the site's ALARA objectives which have been
established at 25%of the ECL (i.e.only 9 of the 2,I04 gross nuclide detenninations
exceeded the Mill's self-imposed ALARA threshold).It should also be noted that the
analytical laboratory maintained Lower Limits of detection consistent with NRC
Regulatory Guide 4.14 tor this reporting period
3
Table 2-Air Monitoring Station Results V-Nat (Comparison to Limits)
....
Monitoring 3((1 Qtr.Result 4th Qtr.Result Effluent Average
Station (uCi/ml)(uCi/ml)Concentration Percent
Limit (ECL)ECL
(uCi/inI)
BIIV-l 7.69E-16 1.25E-15 9 E-14 1.10
BHV-2 2.37E-16 5.71E-16 9 E-14 0.45
BHV-4 2.72E-15 2.88E-15 9 E-14 3.12
BHV-5 7.08E-15 7.22E-15 9 E-14 7.94
BHV-6 4.82E-15 4.80E-15 9 E-14 5.35
Table 3-Air Monitoring Station Results Th-230 (Comparison to Limits)
Monitoring 3'd Qtr.Resuit 4th Qtr.Result Effluent Average.
Station (uCi/ml)(uCi/ml).Concentration Percent
Limit (ECL)ECL
(uCi/mI)
BHV-l 2.49E-16 4.76E-16 2 E-14 1.29
BHV-2 1.61E-16 1.61E-16 2 E-14 0.44
BHV-4 1.27E-15 1.10E-15 2 E-14 3.95
BHV-5 3.4lE-15 2.82E-15 2 E-14 10.41
BHV-6 2.10E-15 1.70E-15 2 E-14 6.34
Table 4-Air Monitoring Station Results Ra-226 (Comparison to Limits)
Monitoring 3'd Qtr.Result 4th Qtr.Result Effluent Average
Station (uCi/ml)(uCi/mI)Concentration Percent
Limit (ECL)ECL
(uCi/ml)
BHV-I 1.90E-16 3.34E-16 9 E-13 0.03
BHV-2 <1.00E-16 1.25E-16 9 E-13 0.01
BHV-4 7.66E-16 6.56E-16 9 E-13 0.08
BHV-5 2.52E-15 3.03E-15 9 E-13 0.31
BHV-6 1.27E-15 1.25E-15 9 E-13 0.14
Table 5-Air Monitoring Station Results Pb-210 (Comparison to Limits)
Monitoring 3'd Qtr.Result 411t Qtr.Result Effluent Average
Station (uCilml)(uCi/ml)Concentration Percent
Linlit (ECL)ECL
(uCi/ml)
BHV-l 7.64E-15 1.16E-14 6 E-13 1.6
BHV-2 8.30E-15 2.04E-14 6 E-13 0.44
BHV-4 1.14E-14 1.38E-14 6 E-13 2.01
BHV-5 1.15E-14 1.59E-14 6 E-13 0.14
BHV-6 1.00E-14 1.49E-14 6 E-13 2.08
4
1.5 Radon-222
Due to the unavailability ofmonitoring equipment capable of detecting the new 10 CRF
Part 20 standard,and with the approval of NRC,Radon 222 monitoring at BHV stations
was discontinued in 1995.Instead,Denison demonstrates compliance with these limits
and the rcquiremcnts of R313-15-301 by calculation,authorized by the NRC and as
contemplated by R313-15-302 (2)(a).
These calculations have been perfonned by use of the MILDOS code for estimating
environmental radiation doses for uranium recovery operations (Strenge and Bender
1981)and more recently in 2003 and 2007 by use of the updated MILDOS AREA code
(Argonne 1998).The analysis under both the MILDOS and MILDOS AREA codes
assumed the Mill to be processing high grade Adzona Sttip ores at full capacity,and
calculates the concentt'ations of radioactive dust and radon at individual receptor
locations around the Mill.
The MILDOS and MILDOS AREA codes calculate the combined Total Effective Dose
Equivalent (TEDE)from both air particulate and radon at a number oflocations including
the nearest potential residence (the individual likely to receive the highest dose from the
licensed operation),approximately 1.2 miles north of the Mill.These calculations
performed for the Mill reveal projected doses to the individual likely to receive the
highest dose from the licensed operations to be below the ALARA goal of 10 mrem/yr
for air particulate as set out in R313-15-101(4).Radon has also been calculated by this
modeling to be well below regulatory limits.
In order to determine whether or not detection equipment has improved since 1995,
Denison re-initiated ambeing Radon-222 sampling at its air monitoring stations on a test
basis during the first quarter of2007 as an augmentation to the calculated results obtained
previously by usc ofthc MILDOS computer code.As cited above,Denison was granted
approval by NRC in 1995 to utilize such calculations to detelmine compliance with these
limits,in lieu ofradon sampling,as contemplated by R313-15-302(2)(a).A copy of the
Technical Evaluation Report evidencing such approval was enclosed with
correspondence to the Division on July 28,2008.Accordingly,while ambient sampling
was initiated during 2007,its purpose was to detennine whether or not the sample results
can be considered reliable enough to serve as an evaluative tool to track Radon-222
trcnds for ALARA purposes.Thc radon sample results are not intended as a replacement
for the calculated values which demonstrate compliance with the regulatory limits.
We have now had eight quarters ofradon sample results to evaluate.The results for 2008
are set out in Table 6 below.
5
Table 6-Location Specific Effluent Concentration Limits for Rn-222
Air Wind Dlst,mce TravelTime E.F.Cl!kulatcd t"Qlr 20<1Qlr 3r~Qtr 41b Qtr Stl\.AUlJual
Station Speed (m).(mhlutcs)Elluilibrium ECL 20(18 2008 2008 2008 Dev.Averllge(m1s)Factor (pCi/L)'(pCi/L)*(pCi/L)*(pCl/L)*(pCl/L)*
BHV-5 4.3 900 3.49 0.D7 1.43 0.8 0.5 0.7 0.8 0.14 0.7
BHV-6 4.2 1600 6.35 0.12 0.83 0.6 0.5 0.5 0.6 0.06 0.55
BHV-I 4.3 2000 7.75 0.14 0.71 0.7 0.9 1.0 0.6 0.18 0.8
BHV-4 2.8 2000 11.90 0.20 0.50 0.5 0.3 0.5 0.2 0.15 0.375
BHV-2 4.3 4900 18.99 0.29 0.34 0.7 0.4 0.6 0.2 0.22 0.475
*These values Include subtraction ofthe background concentratIOns measured at BHV-3.
These results are highly variable.For example,the standard deviation for the results for
BHV-2 is 0.22 pCilL yet the calculated ECL is only 0.34 pCilL.In addition,there have
been some quality control issues with the data received from the laboratory.For
example,all of the results for the 21ld quarter of 2008 were reported as less than a
minimum detection limit of 0.40 pCilL.When the laboratory was advised that this
minimum detection limit was too high (given that the calculated ECL for BHV-2 is 0.34
pCi/L)and was instructed to recount the samples,Denison was advised that the initial
reported results were wrong due to a systemic problem at the lab.However,when the
samples were recounted with a minimum detection limit of 0.08 pCilL,the results for the
background monitoring station at BHV-3 were reported as less than that minimum
detection limit.This brings into question all of the results for the 2nd quarter of 2008,
since BHV-3 has never sampled at such a low level (the average for BHV-3 for 2008,not
counting the results for that qUaiter)is 0.57 pCi/L).Since this unusually low result for
BHV-3 has been subtracted from the results for the other sampling stations,the results for
those stations as reported in Table 6 are likely overstated.
Neveltheless, despite this questionable data for the 2nd qumter,the average results for
each of the sampling stations for the year are not significantly in excess of any of the
calculated ECLs for the stations.The average results for BHV-l and BHV-2 exceed the
ECLs for those stations by less than one standard deviation.Also,the results for all
stations,including BHV-l and BHV-2 were lower than the ECLs for the 4th quarter,
further evidencing the variability ofthe data.
Denison intends to continue to evaluate the monitoring results for radon at its
environmental monitoring stations in order to evaluate the accuracy and usefulness ofthe
data.
1 When comparing alpha track data to effluent concentration limits for radon,two referenced limits are listed
in the regulations.One limit (lx 10-10 uCilml or 0,1 pCill)is for instances where radon daughters are present
with the radon,and arc in 100%equilibrium with the parent Rn-222,The other listed concentration limit (I x
10-8 uCi/ml or 10 peill)is applicablc whcn radon daughters are not present.At the White Mesa Mill,100%
equilibrium of radon progeny with parent Rn-222 is unrealistic given the short half lives of the nuclides
considered and the short travel time to the monitoring locations.Radon emanates from the ground (or mill
tailings)without daughters prescnt,and the daughters grow in over time.It is therefore necessary to evaluate
radon daughter equilibrium at each air monitoring station utilizing site-specific wind speed and distance
6
infol1nation to derive site-specitic Effluent Concentration Limits (ECL's).Such disequilibrium situations
and alternative calculations are anticipated by the regulations and,in particular,R313-15-302(3)provides a
means by which the licensee may adjust the eft1uent concentration values in Appendix B to 10CRF,Pat1 20
at table 2 (which are incorporated by reference into R313-15-302(2)(b)(i))to account for disequilibrium.The
regulatOly purpose ofsuch an adjustment is to appropriately take into account the actual characteristics of the
measured eft1uents,including radioactive decay equilibrium.
Toward this end,Denison utilized an established (EPA,1986)outdoor equilibrium formula to deternline Lhe
appropriate Equilibrium Factor for use in calculating the EeL tor disequilibrium conditions.The EPA
expression of the outdoor Equilibrium Factor (EF)is derived by the following equation:
EF =1.0 -0.0479 exp(-1I439)-2.1963exp(-I138.6)+1.2442exp(-1I28.4)
[Where,t is the travel time in minutes (distance/wind speed)]
Once the Equilibrium Factor has been determined,the ECL for each air monitoring station is determined by
dividing the 0.1 pCi/1 limit (for situations when daughters are present in equiliblium)by the Equilibrium
Factor (EF).
By utilizing this fonnula,Denison has determincd the appropriate (equilibrium adjusted)evaluation threshold
for each of its air monitoring stations.This information,the data inputs used to detennine the Equilibrium
Factor,and the results of sampling tor this report period are shown in Table 6.It should be noted when
observing the comparison between the actual measurement value and the derived ECL that the derived ECL
provides ample protection tor members of the public.More specit1cally,by utilizing CUITent ICRP dose
conversion factors the ECL's established here represent approximately 25 mrem for a continuous exposure at
the monitoring stations.Theretore these values serve as an ALARA goal and would yield doses well below
the 100 mrem standard for individual members orthe public.
2.0 External Radiation <Direct Gamma)
Gamma exposure rate estimates were measured for the third fourth quarters of 2008
utilizing passive integrating devices,thermoluminescent dosimeters (TLD's).While
TLD's were placed in the Held for the 4th Quarter measurements and were recorded as
received by the laboratory,the laboratory apparently misplaced the TLD devices and
were unable to report the results ofmeasurement.After several inquilies the lab was able
to finally locate the exposed TLD's on February 27,2008.The results are to be ready the
week of March 2,2008 and will be forwarded to the Division upon receipt and as a
supplement to this report.
The dosimeters are co-located at each of the license-required high-volume air sampling
stations and at the designated background monitoring station (BHV-3).Measurements
obtained from location BHV-3 have been designated as backb'round due to BHV-3's
remoteness from the Mill site and attendant lack of potential for exposure from the Mill
operation (Le.BHY-3 is located approximately 3.5 miles west of the Mill site).The
results of the environmental TLD measurements and cumulative above-background data
are provided in Table 7 below.In addition,measurement data obtained at these locations
are graphically presented at Attachment D to this report.
7
Table 7-Environmental TLD Measurements (Gamma)
Monitoring 3'd Qtr 4111 Qtr 3'11 Qtr
Station Result ResuH Result Less
(mrem)(mrem)Background
(mrem)
BHV-l 33.93 Pending 1.36
BHV-2 31.59 Pending -0.98
BHV-3 32.57 Pending NA
BHV-4 32.37 Pending -0.2
BHV-5 31.59 Pending -0.98
BHV-6 29.38 Pending -3.19
The results for this period indicate that an above background measurement was only
observed at station BVH-I,whereas;BVH-2,BVH-4,BVH-5 and BHV-6 were less than
the background measured at station BHV-3.The annual individual member of the public
(IMOP)limit is 100 mrem/yr at the property boundary for combined internal and external
exposure.
3.0 Vegetation Samples
Vegetation samples are collected at three locations around the mill periphery.The
sampling locations arc:1)Northeast,2)Northwest and 3)Southwest of the Mill facility.
The vegetation samples are collected during early spring,late spring and fall (e.g.the
growing seasons).Graphical log-scale presentation of the vegetative radionuclide uptake
observed for this repOliing period and results reported by the analytical laboratory
(including QA/QC information)are included at Attachment E of this report.The 2008
data compared to the results ofprevious years indicate no increase in uptake ofRa-226 or
Pb-210 in the vegetative growth collected and are within the variation of previous
sampling episodes.Trending of these data is generally down when the entire period of
record is considered.It should be noted that vegetation samples in recent years were
collected during a period ofsevere drought in San Juan County.For this reason sampling
was dramatically affected due to the scarcity of available vegetative species at the
respective sampling locations.Regarding lower limits ofdetection,all analyses indicated
detected concentrations.
4.0 Stack Sampling
Processes involving effluent control equipment and associated stack emissions (I.e.,the
yellowcake dryer and baghouse)were operating in both the y'd and 4th QUaliers of2008.
The analytical results of the yellowcake stack sampling are provided in Table 8 below,
indicating the uCi/cc release for U-Nat,Th-230,Ra-226 and Pb-210 at the yellowcake
dryer for that quarter.The actual analytical results repOlted by the laboratory are
provided in Attachment F to this report.It is important to note that stack effluent
concentrations are not comparable to environmental air sampling station ECL's for
regulatory compliance purposes.The ECL is a limit that applies to the site boundary
8
locations and is not applicable to effluents from mill processes on the Mill site.These
stack release data are more appropriately utilized for dose modeling purposes and dose
modeling is not computed for semi-annual reporting purposes.
The matter of laboratory detection limits for stack sampling was addressed in recent
correspondence to the Division.More specifically,post July,2008 analyses are to
comport with Regulatory Guide 4.14 guidance with regard to LLD's for stack sample
analyses.In accordance with this requirement,Denison issued a letter to the laboratory
contractor specifying the required LLD's for forthcoming stack sample analyses.This,in
addition to several discussions with the Laboratory regarding the difficulty in meeting
stack sample LLD's and the requirement to meet them.Despite these discussions and
written communications the laboratory was unsuccessful in meeting all LLD's for Pb-2IO
in any 31'd Quarter sample.In response to the LLD problem,the samples collected for the
4th Quarter were analyzed for the full suite of parameters despite the fact that only
Uranium was required for the 4th Quarter samples as a means of meeting the semi-annual
analytical need.Denison received the results of these samples in December,and again,
LLD/MDC problems were encountered.
In response to this dilemma,Denison initiated discussions with the Test America Lab in
Richland,Washington,as Energy Lab was apparently unable to meet our stack sampling
analytical detection requirements.Based on these discussions,and Test America's
determination of improved laboratory techniques,Denison re-collected samples for the
4th Quarter on December 30 and 31,2008.Samples were collected for 8 hour periods
rather than for one a hour period and sequential analytical techniques are to be employed
to meet the LLD/MDC requirements for all nuclides.The results of these tests are
pending due to the time necessary to detelmine an appropriate analytical protocol during
the month of January,and the ncccssary 22 days to complete these sequential analyses.
The analyses will fulfill the semi-annual stack sampling regime whereby samples tor
uranium only analyses are collected during one of the quarters and the full suite of
nuclide analyses are analyzed tor the other quarter.The fourth quarter data remain
pending at the time of this writing but will be transmitted to UDEQ as a supplcment to
this report upon receipt of the results by Denison
In reviewing the data for this period,it was discovered that data reported by the
laboratory (and as indicated on the Chain ofCustody by thc sample contractor,tor thc 3rd
Qumier of 2008)were labeled as being collected on 6-12-08.However,within the
sampling contractor's report,which is dated September 30,2008 and received subsequent
to that date,the samples were in collected on 8-12-08.
9
Table 8-Stack Effluent Concentration and Release Rate
Concentration &3'd Qtr20Q8 3mQtr 2008 41n Quarter Tests ofNorth
Releas.e Rate North Yello'Vcake YellowCake Dryer Yellowcake Dryer,Yellowcake
Dryer Baghouse Bag!louse &Grizzly
U-Nat (u/Ci/cc)Test 1=1.15E-9 Test 1=5.88 E-IO PendingTest2=9.61E-ll
U-Nat.uCi/sec 6.94 E-4 Test 1=7.63 E-4 Pending5.8 E-5
Test 1=Result
invalidated by DUSA
due to the MDC
exceeding the Reg.
Ra-226 uCi/cc Guide 4.14 Test I =3.43 E-12 Pending
Requirement
Test 1MDC=1.14 E-
13
Test 2 result =1.79 £-12
Ra-226 uCi/sec Test I""1.16 E-6 Test 1 4.45 E-6 PendingTest2=NA
Th-230 uCi/cc Test 1""4.49E-13 Test 1=1.04 E-12 PendingTest2 =4.73 E-13
Th-230 uCi/sec Test 1=2.71E-7 Test I =1.35 E-6 PendingTest2 =2.85 E-7
Tests 1& 2 invalidated
by DUSA due to the Test invalidated by
MDC exceeding the DUSA due to the
Pb-2IO uCi/cc Reg.Guide 4.14 MDC exceeding PendingRequirement.the Reg.Guide
Test IMDC =1.75E-l1 4.14 Requirement.
Test 2 MDC=2.75 E-MDC=3.17 E-ll
11
Pb-2IO uCi/sec NA NA Pending
5.0 Surface Water Monitoring
Surface water samples were collected from Cottonwood Wash during the 3n1 Quarter,
2008 and per first and third quarter protocol were analyzed for TDS only.However,
Westwater Creek was not able to be sampled because it was dry for the quarterly
sampling events.The analytical results are in Attachment G to this report.Cottonwood
Wash is an intermittent ephemeral drainage located southwest and down-gradient of the
Mill complex.Samples were not collected for the 4th Quarter as Cottonwood wash was
dry.
6.0 Soil Sampling
Annual soil samples were collected by the Mill staff during the third quarter of 2008.
The results ofthese samplings indicate that soils at the air monitoring stations remain low
and within the range oftypical background.Sample results are provided in Attachment 1.
10
6.0 Meteorological Monitoring
As in prior repOliing periods,an independent contractor has prepared the White Mesa
Mill Semi-annual Meteorological Monitoring Report for the period of July through
December,2008.This information is retained at the Mill site for agency review.
11
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1.00E-11
Effluent Concentration Limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit =5E-12uCi/ml
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
BHV-1 Uranium-Natural Concentrations (uCi/ml)
" · ··_.".__......H._.........._...__......._1._-----------_._--_.__._------_._----_._------
1.00E-12 ,~~~~~-:-::-~=~~~=~=~~~~=~=-==:~~7.:=~-=~~~~-:~E4~~~~;~~==~-==~;::~:_~~~-~=~~~~-=~-~
1.00E-13
..._._.•••_N._•••__•__••__••__••_._._••N••N •__•••_••__••••N ._•••_••••_••__•__•••._••••••__•••••_•••_._.____.•.__••___•••_._••....H•••·_.··__•····_·_··_·.·_.__•__."•.____••_.•__•••_••__••••_••_._••_.__•__••_••__•••._..._.__•••_.___..••__..
fFf-=n~~-------tt---------j-···················--------------~
.1.00E-14
itnaoS-1.00E-15
1.00E-16
1.00E-17
............_._--_.._...._....._-~.........._.._...._.._._---_.-.--....-.....-.--··-·-c=::=\t:;::=::::::::::!'=~:c.:::::::~:.::...",;::::::.::=::::::~..:::::::::::=:::::.:::::::::c.::..-··-.._.._._._..___._-.._.______.__._--._..___-._._-_.-.._--.___-__~...._~--~__---:.~
~--~._._-_.__.._.~.._----_._._._-_.__._.
.~_._-_.-_..._----_._._-
1.00E-18
~~~-~~~~~~~~~~~b ~~~~~~~~-~b ~~~~~~.~~~~~~5?l 5?l 5?l ~~~5?l ~~53 $)$)$)}J ~53 $)~~~~~~~~~~~~~~~~~~~~~~~~~~~
1.00E-11
Effluent Concentration Limit =2E-14
uCi/ml
ALARA Goal =5E-13 uCi/ml
Pre 1994 MPC Limit =8E-14uCi/ml
1==-
BHV-1 Thorium-230 Concentrations (uCi/ml)
1.00E-12
1.00E-13
.1.00E-14
iiuU)
m.9-1.00E-15
1.00E-16
1.00E-17
._-_.__._._----_.-.-_.._.__._-____.__.._------___..__.._----_._.._______-__-_.,__• •.__.___•__H ___•••••__••_••_____•••••__•__•__••_~••___._.__•••••••_••____•••••__••••••_.•••__._••__._••••_••__•••___..__••_._•••,
----
\ce::::::::::::::=_:_:··:::::::::::::.:::c::::::::::::::::::::::::::::-:::::::::e_:::::::··::::::::::··::::::ce..:::::::::::::::::::::;··::::e_.::::::::::-::::::::::::_:..::::::::::::::::::::::=_::..::::::::::::::,::::::::::::::::::::::::::e;_..:::::::::::::::..::::::::::..::::::::::::.ce:::.":::::::.·:ec::::::::::::::·.::::::::::-:_:.:::::::::,,::.::::c:=="=:::::::::::::::::::::::::::::,::::_,
--.:.k •
=!~.::~:~t~~~=f.=I--.---'...-.--....----------------..---.----------.....-----..---.-----.-----------------1
1.00E-18
...a,~_b.~!O ::.\!O ~~...n,~~b !O ::.\!O 2>~...a,~~b !O ::.\~~~~.~~~~~~~~~?J 5?5 ~~~?i 5S })})})~~5S })c:>0~.c:>0~c:>0~c:>0~c:>0~c:>0~c:>0~c:>0~c:>0~c:>0~c:>0~c:>0~c:>0~c:>0~c:>1lJ~c:>1lJ~c:>0~c:>1lJ~c:>1lJ~c:>0~c:>0~c:>0~c:>1lJ~c:>1lJ~c:>0~c:>0~c:>1lJ~
Effluent Concentration Limit =9E-13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
BHV-1 Radium-226 Concentrations (uCi/ml)
1.00E-11 ---
1.00E-12 \,....__.__..__.:=:-':::::::::"-:::::==:::::::::::::::-'::::=::::-'::::::-'::::---':::::::==::=:=::=:::::-.::::==='==:==::::-'::::=:::::::::::::::-'::::-':::::=:-..=::::::::::=::::::=:.:-.::::::.-.:::::....::=.=--==
\
1.00E-13 ••_••_•••_••_•••___m ••___ ,____••••_._____••__••__••__.•__•__•.__•••_••_••••._•••••______••••••_ _•••__._._.._•••••_•••_••_.._••__~••__••_.._••••_ __.'-_____~__~_--.__-_,__.,._~__._..___----_~._._..~_.._.._..__~.~~-._.•.._._._-_._._---___.._-_.._..___..__..__.._-,__._..___.._-_._--_.._____-_._~_._._.._._.__..-------.__-..__-
--
-
---_.._._.___.__..___..__,._..__.._.._..___.._..___.._,..__,-,-,,__-__..-."._,_.._,_._._.___._._-_..~,-___.._._..__-----_._-_.____--_.._----___.___._--'.'--_..-._-_..__.__.__-__._.__.,_-••__.__•••••••_••••••..__•••_•••__••_._M..••._'.___._••_••••••_._•••___._._••__.__..M.___.__..__.._•••••__..__•__.._,____._•••__••_•••••_•••__••_._._•• ••_••_••••
-_.._--_._.._----~_._~-_..__.___-------_.._---_.._-.._--_.._._-__-_.._..___.___.._._.,_--_.._.._._--_._.._.._---_.-._-_.__._._-------_._---_.-.._----_.._---------____..
~~;~::~--------_..._._-------I~~--=--~";~-::=~=-_===¥==tI1--~-:-Af=.--==----=-A-:-~f\:~_:A~j
~~~~~~~[~~~~~=~~~~~=~~~~~~~'m:'~:=~-"====:=:=~:::=::=====~:=c:c~c==~=c~:=:=~~.__
~-----~....,.,.~~~...t ~~
1.00E-16
.1.00E-14
~(f)
aso
d,1.00E-15
1.00E-17
I---.-.------.-.---...---..------.----.---.--------------.------------._--
1.00E-18
!C"!C'l-!C~~!C~!Cta ~!Cto !CO:>!?J<;:}!?J"!?J'l-!?J~~!?J~!?Jta ~!?Jto !?JO:>~<;:}~"~'l-~~~~~~~~~~~~~#~~~~~~~~~~~~~~~~~~~~
Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =4E-12 uCilml
Pre 1994 ALARA Goal =1E-12 uCi/ml
BHV-1 Lead-210 Concentrations (uCi/ml)
1.00E-11 _"::::'--='==':::::"'-..:=":===='=':"'::-'::=-:::'-::::'=:=:="--=="::::"::'.:=~,:=,=-~,::::-,::--===:-"...::::.."':'::::==:==:::::=:.-:::==-....:::::..-::.:::::::-::..:::.::::::::::=:::=:::=::::::::==::::::::-..-:::::=::-':::::::'::=-'::::::-===:=::::-..-::=::=::::=:-==:-'=:===--====::===----====-~_-::::::=.:::-.:========-=--=..._..__.._....__.._--_._._------_..-.._.
1.00E-12
1.00E-13
F:=':-'-=-=tl=-----
--
.........................__..________-_.______..................._-_.._-______---_._--_._._.._..__.__.._.._-_......_.-_._____-___-_-__..______-_-__.__._._..__._-.._.__-_.__._--_..__.-____.-_-.._._-_.____.__._____.-
~..i
.1.00E-14
'3fI)
J-1.00E-15
1.00E-16
1.00E-17
....__•••••_.__.._•••••____•••_•_••••_•••H _•••••_•••__••_•••__••__.~.::-;::::::-,;:::-_-:.-:..::::::-.::::::-';:::::::'-;::;:-;::::~.:::~,;:::-_.._-;::::::•.::::::.-=..::::=::::::::::..::..::::::::::..:-;::::..:::::..:::..:::::.,;:,;:..::::::::::..::.:::::::.:-.:::.:::::::::::::.':..:::::::::::::::.-.:::::::=-...:::::::::-:.::::::._..::::::::::::::::::::::::.-.:::-_:::::::::::::-,;:::::::..:::..-:=..::::::::-:..:::.:=::::::-,;:::::-_-:::::::=::.=~.::::.-::::...___._._-.,.__._-__~.._________._____.-_~____.._-,._____..________.,-"'-_..-_..___~.___._.,_.___..__.._.._-_.._.._-......_-__~_____.._--__-_..___..__..__-_._..-_.___.._..-._.___---_-.__-"-"'--'_______-.-__.__-...__._-__---_-_--__---__._..__-_.-_.__, ,_-__._~-_.._,..'_.._"'--'.'__.___-_.__.._.__-_.._.._.-_._.__..-_._-_.__---_.._.__~-__--------._--_..____-__.._.._-_..__--..---.___._-~.._--__--_.._-._--__-_._.._.._.._--_,._..-._-_._.._._-__-_.-_..-----_..___~-_.____..___--_._-._._.._.___.___.--.----
.....~--__.¥_.._~-_~..~_.._.._-.-..~..__-_._----.._"--..-_-.-.-_.-_--.._-•..._..-~_..__.¥¥-•••_••••_._._••_--••••___.--.,..--•.•___--•••-••~--__•••___-_.--_••_.__.-~.."
_.....-_..._..,_.'....,-.--'..-.--...._.-_.._._.-..-..-'"......_..
._--_.'.___.._._....-"---"-'''_.__._.."._....-----_,.__..__..-'-....".--.'.._.._,.-__."_-'_.._---_.-_-".-"_.
--_.__.._--_.._...._...._....._........_.__..._....._....-.....__..._..._......_-_..--_....__._...._......---'.._...__._--._......_.._._....._...._-_..._-.....-..--_...----._--_.._--_._.._•..._....-._-
1.00E-18
~~~-~h ~~~~~~~~~~~~~~~~~~~~~~~~~'Ii ~~~~~~~~~?-f ~~~9J AQ)5:5 5:>5:>5:>~~A~5:>##################~######~#
INTERNATIONAL URANIUM CORPORATION
WHITE MESAMILL
AMBIENT AIR RA010NUCLIOE PARTICULATES
4Ih
01,"d01,
470
2nd
97.6%
451
1nt
94.5%
CurrelltOuarter
%time operated
A"Vol SCF le6",ume ,n,n,
URANIUM NAT THORIUM-230 RADIUM·226 LEAD -210
PERIOD GROSS LLD %GROSS COUNTING LLD %GROSS COUNTiNG LLD %GROSS COUNTING LLD %
ENDING CONC.Cifcc 1E-16 MPC·CONC Cllcc ERROR lE-16 MPC·CONC Cifcc ERROR lE-16 MPC'CONC Ci/cc ERROR lE-16 MPC'
28·Sep-81 2.35E-15 5E-17 4.70E-02 7,82E-16 2.75E-16 1E-16 2.61E-01 1.06E-15 1.24E-16 1E-16 5.30E-02 2.57E-14 1.52E·15 2E-15 3.21E·01
14-Dec-81 1.56E·15 5E-17 3.12E-02 1.49E-15 2,10E-16 lE·16 4,97E-O~1.93E-15 3.34E-16 1E·16 9.65E·02 2.64E·14 2.28E·15 2E-15 3.30E-Ol
29·Mar-82 2,16E-15 9E·16 4.32E-02 2.93E-15 1.15E·15 3E-15 9,77E-01 1.16E·15 5,78E·16 4E-15 5.80E-02 2.09E-14 2.76E-15 2E-14 2.61E-01
30-Jun-82 4.69E-15 lE-16 9.38E-02 3.<\6E-15 3.28E·16 lE·16 1.15E+00 2.38E-15 4.77E-16 5E·16 1,19E-Ol 2.14E-14 3.70E·15 5E-15 2.68E-01
27·Sep-82 4.45E·15 lE-16 8.90E·02 3.29E-15 4.76E-16 lE-16 1,10E+OO 3.23E·15 402E·16 lE-16 1.62E-01 1.99E-14 3.60E-15 2E-15 2.49E-01
3-Jan-83 4.39E-15 5E·17 8.78E-02 5.91E-16 1.34E·16 7E-17 1.97E-01 9.14E-16 1.03E-16 6E·17 4.57E-02 4.87E·14 2.70E·15 2E·15 6.09E-01
4-Apr-83 7.51E·16 5E-17 1,5OE-02 2.13E·16 3.05E-17 2E-17 7.10E-02 3.20E-16 7.63E·17 5E·17 1.60E-02 1.88E-14 1.00E-15 9E-16 2,35E-Ol
30·Jun·83 2,68E-16 5E-17 5.36E-03 6.92E-16 1.32E·16 9E·17 2,31E-o'\7,92E·16 1.32E-16 lE-16 3.96E-02 2.00E·14 2.00E-15 1E-15 2.50E-01
3-0ct·83 SampieLost
3-Jan-84 2.87E·15 lE-16 5.74E-02 114E·16 4.98E-17 8E-17 3.80E-02 1.79E-16 7.69E·17 lE-16 8,95E-03 1,06E-14 1.99E·15 2E-15 1.33E-01
2.Apr-84 1.59E-15 5E·17 3.18E-02 3.40E-16 1.01E-16 3E-17 1.13E-01 3.71E-16 7,80E-17 7E-17 1.86E·02 3.34E-14 1.69E-15 1E·15 4.18E-01
2-Jut-84 3.10E-15 6E-17 6.20E·02 1.00E-15 3.59E-16 3E-16 3.33E-0'l 2.09E-15 2.29E·16 lE-16 1.05E-Ol 1.88E-14 110E·15 9E-16 2,35E-Ol
1·0ct·84 6.42E-16 5E·17 1.28E-02 1.39E-16 1.17E-16 7E·17 4.63E-02 1.94E-16 1,11E·16 9E-17 9.70E-03 1.85E-14 1.39E-15 lE-15 2.31E·Ol
2·Jan·85 5.06E-16 5E·16 1.01E-02 4.56E-16 2.26E·16 2E·16 1.52E-01 3.49E-16 '.32E-16 lE·16 1.75E-02 3.03E-14 1.17E·15 7E·16 3.79E-Ol
1-Apr-85 O.OOE+OO 5E-17 O.OOE+OO 1.23E·15 2.52E-16 4E-17 4.lOE-O~4.88E-16 1.09E-16 9E-17 2.44E-02 8.06E-15 8.99E·16 8E-16 1.01E·Ol
1-Jul-85 7.17E-16 5E-17 1.43E-02 O.OOE+OO 4.76E-14 lE·16 O.OOE+OO 1.05E-15 150E-16 7E-17 5.25E·02 2.15E·14 1.32E-15 8E'16 2.69E·01
30-Sep-85 6,13E-16 5E-16 1.23E-02 1.18E-16 118E-16 lE-16 3.95E-02 3.71E-16 8.56E-17 7E-17 1.85E-02 3.64E-15 6.61E·16 9E·16 4,55E-02
2-Jan-86 3.42E-15 9E-16 6.84E·02 4.74E-16 #DIV/O!2E-16 158E-01 #DIV/O!O.OOE+OO 2E-16 ~DIVfO!#DIV/O!ItDIVJO~2E-15 ItDIV/O!
1.Apr-86 3.98E·15 2E-18 7,96E-02 9.74E-16 2.05E·16 5E·18 3.25E-0"1 150E-15 2.07E-16 4E-18 7.51E-02 1.41E·14 4.06E-16 lE·16 1.76E-Ol
30-Jun-86 5.51E-17 lE-17 1.10E·03 3.52E·16 3.13E-17 2E-18 117E-O~1.37E-15 3.01E-17 4E-18 6.87E-02 1.23E-14 6.01E-16 5E-16 1,54E-Ol
27-0ct-86 1.99E-15 2E-18 3.98E·02 3.06E-16 8.00E-17 3E-18 1.02E.()1 1.25E·15 1.00E-16 2E-18 6.25E-02 1,08E-14 2.00E-16 4E-18 1.35E·01
15·Dee·86 1.67E-15 3E-18 3.34E-02 1.16E·16 4.00E-17 2E-17 3.87E-02 5.98E-16 1.00E-16 4E-17 2.99E-02 1.37E-14 2.00E-16 3E·17 1.71E-Ol
16-Mar-87 2.33E-15 3E-18 466E-02 4.30E·16 9.00E-17 6E-18 1.43E-01 1.92E-16 5,00E·17 5E-18 9,60E-03 5.59E-14 1.00E-15 8E-18 6.99E-01
11·May·87 2,36E-15 5E·18 4.72E-02 ·1.69E-16 1.60E-16 5E-18 2.56E-01 8.76E-16 1.00E-16 5E·18 4.38E-02 1.45E-14 3.00E-16 3E·17 1.81E-Ol
9-Sep-87 2.27E-15 lE-19 4.54E-02 2,44E-15 2.00E·16 6E-18 8.13E-01 8.51E-16 1.40E-16 4E-18 4.26E-02 3.14E-14 5.00E·16 8E-18 393E-Ol
2-Nov-87 2.75E·15 lE-17 5.50E·02 2.46E·15 3.00E-16 lE-17 8.20E-01 1,34E-15 2.00E-16 lE-17 6.70E-02 2.79E-14 1.00E-15 5E-17 3.49E-Ol
16-Feb-88 1.07E-15 5E-18 2.14E-02 1.47E-16 5.00E-17 2E-17 4,90E-02 4.44E·16 5.00E-17 3E-17 2.22E-02 4.01E·14 2.00E-16 5E·17 5.01E-Ol
18-May-88 1.98E-15 3E-18 3,96E-02 1.25E-15 1.00E-16 2E-17 4.17E-01 6,40E-16 7,00E-17 1E·17 3.20E-02 1,07E·14 1.00E-16 3E-17 1.34E·01
15·Aug·88 2.06E-15 3E-18 4.12E-02 3.41E-15 2.00E-16 1E-17 1,14E+oO 5,08E·16 6.00E-17 2E-17 2.54E-02 1,62E·14 3.00E-16 2E·17 2.03E-Ol
14-Nov-88 3.94E·15 3E-18 7,88E-02 2.12E-15 1.00E-16 lE-17 7mE-01 1.01E-15 5,00E-17 lE-17 5.05£-02 2.47E-14 1.00E·16 3E-17 3.09£·01
13-Feb-89 1,99E·15 4E-17 3.98E-02 5,73E-16 7.88£-17 lE-16 1.91E-O~5.99E-16 3,49E·17 2E-16 3.00E-02 3,23E-14 2,36E-16 5E-16 4.04E-01
15-May-89 1.70£-15 7E-18 3.40E-02 6.32E-16 7.00£-17 7E·18 2.11E-01 5.86E-16 5.00E-17 7E-18 2.93E·02 6.16E·15 1.00E-16 3E-17 7.70E-02
14-Aug-89 2.31£-15 2E-18 4.62£-02 2.31E·16 3.00E·17 8E-18 7.70E-02 1,77E-16 5.00E-17 8E-18 8.85E-03 7.65E-15 1,00E-16 4E-17 9.56E·02
13·Nov-89 4.72E-15 2E-17 9.44E·02 1.71E-15 2.00E-16 3E-18 5.70E-01 1.52E·15 2.00£-16 8£-18 7.61E-02 1.89£-14 3.00£-16 2E·17 2.37£-01
12-Feb·90 3.44E-16 3£·18 6.88E-03 8.39£-16 1.00E·16 6E·18 2.80E-01 8.31E-16 8.00E-17 2E-17 4.16E-02 2.57£-14 3.00E-16 5E-17 3.21E·Ol
14·May·90 3.03E·15 lE-16 6.06E-02 1,47E·15 2.00£-16 1E-16 4.90E-01 1.04E-15 1.00E·15 lE-16 5.20E-02 1,79E-14 3,00E-16 2E-16 2,24E-Ol
13-Aug.90 1.64E-15 lE·16 3.28E-02 1,49E-15 7.00E-17 lE-16 4,97E-01 3.34E-16 5.00E-17 lE·16 1.67E-02 8.27E·15 2,00E·16 2E-16 1,03E-Ol
12-Nol/-90 1.48E·15 lE-16 2.96E-02 7.50£-16 110E·16 lE-16 2,50E-01 5.80E-16 7.00E·17 lE·16 2.90E-02 216E-14 4.00E-16 2E-16 2.70E-Ol
11·Fet>·91 1.90E-16 1E-16 3.80E-03 3.48E-17 2.10E-17 lE-16 1,16E-02 7,91E·17 2.30E-17 lE-16 3.98E-03 3.79E-14 100E-15 2£-16 4.74E-Ol
13-May-91 3.42E-16 lE-16 6.84£-03 1.34E-15 1.00E-16 lE-16 4,47E-01 7.39E-16 9.00E-17 lE·16 3.70E-02 1,46£-14 1.00£·15 2E-15 1.83E·01
12-Aug-91 2,77E·16 1E-16 5.54E-03 4.17E-17 8.00E-18 lE-16 1,39E-02 1.45E-16 700E·17 lE-16 7,25E-03 1.80E-14 3.00E-16 2E-15 2.25E-Ol
11-Nov-91 6,65E·17 IE-16 1.33£-03 9.13E-17 3.00£-17 2E·17 3.04£--02 2,77E-17 2,00£-17 2E-17 139E·03 1,06£·14 2.00E-16 1E-16 1.33E-01
10-Feb-92 1.94E-16 lE-16 3.88E-03 4.28E·17 3.00E-17 2£-17 1.43E·02 4.08£-17 2.20E·17 2E-17 2.04E-03 351E-14 6.00E-17 lE-16 4.39E-Ol
11·May-92 2.54£-16 lE-16 5.08£-03 6.49E-16 5.00E-17 2E·,9 2.16E·O\6.86E·17 4.00E-17 2E-19 3.43E-03 1.38E·14 2.00E-16 lE-18 1,73£-01
10-Aug-92 1.73E-16 2E-18 3.46E-03 1.55E-16 4.00E-17 4E-18 5.17E.()2 1,20E-16 6.00E-17 2E-18 6.00E·03 1.53E-14 2.00E-16 2E-17 1.91E-Ol
9-Nov·92 1.56E·16 3E-18 3.12E·03 3.19E-17 2.10E-17 4E-18 106E-02 4.90E-18 2.20E-17 3E-18 2.45E-04 1,86£-14 2.00E-16 2E-17 2.33E-01
9-Feb-93 2.10E-16 lE-18 4.20E-03 OOOE+OO 4.60E-17 4E-18 O.OOE+OO 3.89E-17 7.30£-17 3E·18 1,95E-03 2.52E·14 4.00£-16 2E-17 3.15E-01
10-May-93 O.OOE+OO 3E-18 O.OOE+OO 4.11£-17 3.60E·17 4E-18 137E-02 6,43E-17 4.00E-17 3E·18 3.22£-03 1,26E-14 2.00E-16 2E-17 1,58E·01
10.Aug-93 2.30£-16 2E-18 4.60E-03 6.00E-17 5.00E-17 4£-18 2.00E-02 6,43E-17 8.lOE-17 3E-18 3.22E-03 160E-14 200E-16 2E-17 2.00E-Ol
8-Nov-93 O.OOE+OO 2E-18 O.OOE+OO O.OOE+OO 5.60£-17 4E-18 O.OOE+OO O.OOE+OO 1.00E-16 3E-18 O.OOE+OO 1.57E-14 3.00E-16 2E-17 1,96E-Ol
7·Feb·94 1.82E·16 3E-21 3,03E-01 5.00E-18 6.00E-17 4E-18 1.67E-02 4.30E·17 1.6OE·16 3£-18 4.78E-03 2,59E-14 5,00E-16 2E-17 4.32E+00
9-May-94 3.60E-16 2E·17 6.00E-Ol 2,70E-16 1,10E-16 4£-17 9.00E-Ol 2.87E-16 1,00E-16 3E-17 3.19E·02 160E·14 3.00E-16 2E-16 2.67E+00
9-Aug-94 4.04E·16 1E-16 6.73E-Ol 2,70E-16 8.71E-17 lE-16 9.00E-Ol 2,94E-16 2.90E-17 lE·16 3,27E-02 2.00E-15 1.90E-16 2E-15 3.33E-Ol
7-Nov-94 9.18E·17 lE-16 1.53£·01 3.60E·16 4.42E-17 1E-16 120E+OO 2.91£·16 2.45£-17 lE-16 3.23E-02 2.00£,15 7.61E-17 2£-15 3.33E-01
7-Feb-95 1.77E-16 lE-16 2.95E-01 9.70E-17 1.00E·16 lE·16 3.23E-'Jl 9,70E-17 1,00E-16 lE-16 1.08E-02 8.60E-15 3.76E-16 1E-16 1.43E+00
9·May-95 9.40E·17 1£-22 1.57E·01 5.36E·16 4.39E-17 lE-16 1,79E+00 1.60E-15 717E·17 lE-16 1,78E-Ol 3.84E-15 2.05E-16 lE-16 6,40E-Ol
9.Aug-95 2.70E-16 lE-16 4.50E-Ol 1,60E-16 1.50E-17 1£-16 5,33E-01 2.76E-16 4.68E-17 lE-16 3.07£-02 3.76£·15 2,68E·16 2E-15 6.27E-ol
l1-Nov-95 480E-15 lE-16 8.00E+00 6.41E·16 5.75E·17 2E-16 2.14E+00 8.93E-16 4.24E-16 2E·16 9.92E-02 5.20E-15 2.40E-16 1E-15 8.67E-01
5-Feb·96 5.34E-15 lE-16 8.90E+00 2.30£-15 1.30E-16 lE-16 767E+OO 130£·15 7.80E-17 lE-16 1,44E-01 4.20E-15 3.04E-16 lE-16 7,00E-Ol
6-May-96 5.11E-16 lE-16 8.52E-Ol 3.06£-16 2.90£-17 1E·16 102E+OO 1.40E-16 9.67E-18 1E-16 156E-02 703E·15 5.54E-16 1E-16 1.17E+00
5-Au9-96 5.99E·16 lE-16 9.98E-Ol 1,55E'15 7.65E-17 1E-16 5.17E+00 2,03E-16 2.83E·17 lE-16 226E-02 5.94E-15 3.05E-16 1E-16 9.90E-01
6-Nov-96 3.38E-16 1E-16 5.63E-01 5.45E-16 4.65E-17 1E-16 1.82E+OO 100E-16 NA lE-16 1,11E-02 1.22E-14 4.53E·16 lE·16 2,03E+00
6-Feb-97 1.00E·16 lE-16 1.67E-Ol 1.25E·16 2,47E·17 lE-16 4.17E-Ol 1.28E-16 154E·17 lE-16 1.42E-02 5.68E-15 2.85E-16 lE-16 9.47E-Ol
5-May-97 109E-16 lE-16 1,82E-01 1,00E-16 NA lE-16 3.33E-01 1.00E-16 NA lE-16 l11E-02 4.39E-15 2.96E-16 lE·16 7.32E-Ol
11-Aug-97 2.88E-16 1E-16 4.80E-01 3.83£-16 4.14E·17 lE-16 128E+00 1.82E-16 149E-17 lE-16 2.02E·02 5.29E-15 2.84E·16 lE-16 8.82E-01
5-Jan-98 3.24E·16 lE-16 5,40E-Ol 3,47E-16 N/A lE-16 1.16E+00 1-19E-16 N/A 1E-16 1,33E-02 4,73E-15 N/A 1E-16 7.88E·01
28-Apr-98 4.75E-16 lE-16 7,92E·Ol 6.73E-16 3.18£-17 1E·16 224£+00 5.69E·16 4.08E-17 lE-16 6,32E-02 5.94E·15 2.92E-16 lE·16 9,90E-01
31-Jut-98 8.84E-16 lE-16 9.82E-Ol 1.93E-15 N/A lE-16 6.43E+00 1,43E-15 6,65E-17 lE·16 1.59E-Ol 5.22E-15 3.33£-16 lE-16 8.70E-Ol
28-Sep·98 2.81E-16 1E-16 3.12E-Ol 2.89E-16 2.57E-17 1£-16 9.64E-01 1,80E-16 9.07E-18 lE-16 2.00E-02 464E-15 2,24E-16 lE·16 773E-Ol
28-Dee-98 8.08E-16 lE·16 8.97E-Ol 4,93E-16 2.42E-17 lE-16 164E+CO 5.01E-16 3.63E-17 lE-16 5.57E-02 1.06E-14 2,66E-16 lE-16 1,76£+00
29-Mar-99 2.06E-16 lE-16 2.29E-01 2,06E-16 1.68E-17 lE-16 6,86E-<"1 1.42E-16 7.62E·18 lE-16 1,58E-02 6.69E-15 2.99E-16 lE-16 1.12E+00
3-Ju:·99 5.31E-16 lE-16 5.90E-01 2.47E-16 1.68E-17 lE-16 8.24E-Ol 223E-16 2.29E-17 lE-16 2.48E·02 6.44E-15 3.06E-16 lE-16 1.07E+00
27-Sep-9g 8.98E-16 lE-16 9.97E-Ol 3.90E-16 2,74E·17 lE-16 1,30E+00 2.96E-16 2.90E-17 lE·16 3.29E-02 7,29E·15 3.19E-16 lE-16 1,22E+00
28·Dec-99 1.48E·15 lE-16 1.64E+00 6.00E·16 518E-17 lE-16 2.00E+OO 5,57E-16 4.57E-17 lE-16 6,19E-02 619E-15 3.09E-16 lE·16 1,03E+00
27-Mar-00 <1.00E-16 lE-16 <1.11E-Ol 1.06E-16 1.12E-17 1E·16 3.55E-Ol <1.00E-16 NA lE·16 l11E-02 6.23E·15 2.90E·16 lE-16 1,04E+00
26·Jun-00 3.47E·16 1E-16 5.78E-Ol 3.46E-16 3.53E-17 1£-16 1.15E+00 3.62E-16 3.99E-17 lE-16 4.02E-02 4.50E-15 3.53E-17 lE-16 7.50E-Ol
26-Sep-00 2.51E-16 lE·16 2.79E-01 1.78E-16 8,40E-18 1£·16 5,93E-01 3.25E-16 8.40E-18 lE-16 3.61£·02 8.55E-15 2.06E-16 lE·16 1.43E+00
26-Dee-00 <1.00E-16 1E·16 O.OOE+OO 1.42E-16 9.80E·18 lE-16 4.73E-01 1.31E-16 4.20E·18 lE-16 1.46E-02 7.77E-15 2.28E-16 lE-16 1.30E+00
26-Mar·Ol 3.lOE·16 lE-16 3,45E·Ol <1,00E-15 lE-16 <3.33E-00 <1.00E-15 lE-16 <1.11E-0 7,19E-15 3.77E-16 lE-16 1.20E+00
29-Jul-01 1.52E-16 lE-16 1.69E·Ol 1.44E-16 7.16E-18 lE·16 4.79E-01 1.77E-16 N/A lE-16 1.97E·02 7.21E·15 1,27E-16 lE-16 1.20E+00
24-Sep-01 1.03E·16 lE-16 1.15E-01 <1.00£·16 NA 1E-16 <:3.33E-01 <1,00E-16 NA lE-16 <1.11E-02 8.09E-15 1.68E·16 1E-16 1.35E+00
31-Dec-Ol <1.00E-16 1E-16 <:lllE-Ol <1.00E·16 NA lE-16 <3.33E-01 <:1,00E-16 NA lE-16 <111E-02 1.39E·15 1.59E-16 lE-16 2,32E-01
1-Apr-02 2.05E·16 lE-16 2.28E-01 2.44E·16 3.03E·17 lE-16 8.13E-01 2.29E-16 2,45E-17 lE·16 2.55E-02 8.15E·15 1.64E-16 lE-16 1,36E+00
1·Jul-02 3.55E-16 1E-16 3,94E-01 4.85E-16 3.75E-17 lE-16 162E+00 1,06E-16 2,98E-18 lE-16 1,17E-02 7.65E-15 1.79E-16 lE-16 1.26E+00
30-Sc-p-02 1.17E-16 1E·16 1,30E-01 1.61E-16 115E-17 lE-16 5.37E-0·!<1.00E-16 N/A lE·16 <0,0111 3.68E-15 9.52E·17 lE-16 6,13E-ol
30-Dec-02 <:1.00E-16 lE-16 <1-11E-Ol 1.03E-16 8.66E-18 lE-16 3,43E-01 <1.00E-16 N/A lE-16 <0.0111 9.46E-15 1.69E·16 lE-16 1.58E+00
31·Mar-03 1.20E-16 lE-16 1.33E-01 112E·16 1.43E-17 1E·16 3.91E-01 <1.00E·16 N/A 1E-16 <0.0111 4.68E-15 1.19E-16 lE·16 7.80E·01
30-Jun-03 2.18£-16 lE·16 2.42E-Ol 3.40E-16 2.58E-17 lE-16 1.13E+00 1.67E-16 2,00E-17 1E-16 1,85E-02 5.96E·15 1.39E·16 1E-16 9,94E-Ol
29.Sep·03 <1.00E-16 1E-16 <1.11E-Ol <1.00E·16 NA lE-16 <3,33E..()1 <1.00E-16 N/A lE-16 <0.0111 7.28E-15 1,89E-16 lE-16 1.21E+00
29-Dec-03 <1,00E-16 1E-16 <1.11E·01 2.54E-16 115E·17 1E·16 8.48E-01 3.35E-16 8.59E-18 lE-16 3.73E-02 6,25E-15 1.39£·16 6E-13 1.04E+00
29·Mar·04 <1,00E-16 lE-16 <111E-Ol <1.00E·16 NA lE-16 <3.33E-01 <1.00E-16 NA lE-16 <1.11E-02 1.54E-14 3,37E-16 2£-15 2.57E+00
27·Jun-04 <1,00£-16 lE-16 <1.11E-01 <:1.00£-16 NA lE-16 <3.33£-01 <1.00E-16 N/A lE-16 <1.11E-02 3.04E-15 2.72E-16 2E·15 5.07E·01
27-Sep-04 <1.00E-16 lE-16 <1.11E·01 <1.00E-16 NA lE-16 <3.33E-Ol <1.00E-16 N/A lE-16 <1.l1E·02 1.05E-14 3.85E-16 2E-15 1.75E+00
27-0ec-04
I
<1.00E-16 1E-16 <1.11E-Ol <:1.00E·16 NA 1E-16 <3.33E--01 <1.00E-16 N/A lE-16 <1.11E-02 1.59E·14 2.63E-16 2E-15 2.66E+00
28-Mar-05 <1.00E-16 1E-16 <111E-Ol <1,00E-16 NA 1E·16 <3.33E-01 <:1.00E-16 N/A lE-16 <1,11E·02 7,42E-15 1.40E-16 2E-15 1,24E+00
29-Jun-05 <1.00E-16 1E-16 <1.11E-Ol 1,30E'16 1.11E-17 lE-16 4.32E-01 1.20E-16 1.67E-17 lE-16 1.34E-02 7.94E-15 1.64E-16 2E·15 1,32E+00
26-Sep·05 <1.00E·16 1E-16 <1.11E-01 2,56E·16 2.64E-17 1£-16 8.53E·01 2.42£-16 4.58E-17 lE-16 2,68E-02 1,22E-14 5.37E-16 2E·15 2.04£+00
3-Jan-06
I
2,13E-16 lE-16 2,37E·01 1.04E-16 1.53E-17 lE-16 3.45E-Ol <1.00E·16 N/A lE·16 <:111E·02 3.73E-14 5.96E-14 2E·15 6.22E+00
3-Apr-06 1.62£-16 lE-16 1.80E-01 1.86E-16 5,02E·17 1£-16 6.20E-Ol <1,00E-16 N/A lE-16 <111E-02 8.36E-15 4.21E-16 2E-15 1.39E+00
3-Jul·06 1.86E·16 lE-16 2.06E-01 <1,00E·16 N/A lE-16~<1.00E-16 N/A lE-16 <1.11E-02 9.77E-15 4.24E-16 2E-15 1.63E+00
02-0ct-06 <1.00E-16 1E-16 <1.11E·l <:1,00E-16 N/A 1E·16 <:3.33E-1 <1.00E-16 N/A lE-16 <:111E·02 1.30E-14 5.05E·16 2E·15 2.17E+00
01-Jan-07 2.88E+00 1£·16 3,20E-Ol 1.47E-16 3.54E·16 lE-16 4.89E-ol <1.00E-16 N/A lE-16 <1,11E-02 1.17E-14 4.58E-16 2E-15 1,94E+00
2-Apr-07 2.23·E16 lE-16 2.48E-Ol 1.63E-16 NA 1E-16 5.45E-01 <1.00E-16 NA lE-16 <:1.11E-2 1.65E-14 3.75E-17~2,75E+00
2-Jul-07 3.35E·16 lE-16 3.72E·Ol 1.34E-16 4.33E-17 lE-16 488E--01 1.36E-16 7,07E·17 lE·16 1.51E-02 1,78E-14 4.33E-17 2E·15 2,97E+00
30-Sep-07 1.15E-16 lE-16 1,71E-01 <1.00E-16 NA lE-16 <3.33E-1 <1,00E-16 NA lE·16 <111E-02 7.68E-15 2.93E-16 2E-15 1,28E+00
31-Dec-07 <1.00E-16 1E-16 3.66E-01 1.93E·16 4.33E-17 lE-16 6.42E·01 <1.00E-16 Nt<lE·16 <111E-02 1,31E-14 3.40E-16 2E-15 218E+00
31·M.ar·08 II·IE·[(,1£-16 1,26E-Ol 1-[310-16 2.63E-17 lE·16 3,76E-01 "1.(11-:-[6 2.63E·17 1£-16 <1.11E·2 (,HE-15 3,81E·16 2E·15 1,07E+00
30·Jun-08 7.mE_16 lE-16 7,88E-Ol .l,HJE·16 1.03E·16 lE-16 128E+00 227E-16 1.06E-16 1E-16 2.53E-02 (,5210·15 4,78E-16 2E-15 1.09E+00
30-Sep-08 7.69E·16 1E-16 8.54E-Ol 2.49E·16 2.22E-18 1E·16 9.80E~01 1.90E~16 4.30E-17 1E-16 2.11E·02 7,64E-15 4.16E-16 2E-15 1.09E+00
31-Doc·08 1.25E-15 lE·16 1.35E+00 4.76£-16 5.54E-18 lE·16 1,59E+oO 3.34E-16 2.49E·17 lE-16 3,71E-02 1.16E·14 5.54E·16 2E·15 1.95E+00
Tab 2
BHV-2 Radionuclide Concentrations (uCi/ml)
1.00E-11
1.00E-12 ---
._--_._---_._.,----------_.._---_._._---------_._-----.-
-_._--------------~---_._._------_._---~--_._-------_.-------_.
...._-_._--"--_.__..__._-------------------_._._----_..._-_..__._---_.._--_.._--_._------_._-
1.00E-13 .,-----_.__._--_.__.._._._-
--
'~~ltt=:=--:~~'£~-~~:=~-~=.~i-·=-~.=~.~:~~~~-.~~~.-~A-.~~~~~f-Im~~~~g~"~..l~
•••••M .._._•••_.•__••__._.M••••
._...._------_._-_..
~\I ..-
t=-....-::
1.00E-16
Qod,1.00E-15
.1.00E-14
'3
,-------_..•..-.--4&......--
1.00E-17 .:::....:::::::::::::::.:..:::::::::::::::::-::::::....::::..:::::.::::..::·.:.::::::::C:.:::::::::::C.:::::::::::.::::"::::::::::::::::::::::::.::.::::.:::::.:'"::::::1::::::..::::::::::::::::C.:7:::::::::::::':':"::..::::::.:::".::::::::::::.:::::::::::::::::::C:::::::::::::::'::::::":::::...:::::::::::::::::::::::::::::::::::=:::::.:::::::=::::::::::::::C::::::::'.:::::::::::::::::::::::::::.:::::::::::::::":::::::::.,::::::::::==:::::::-::.::
1.00E-18
,~~~~~~~~~~~~-~~~~~B ~~~~-~~~~~~~fO ~qj ~!'ot~~~~~~~~~~~~93 ~5S ~~~>Y.~!'ot<::S ~~~&&~&~~~~~~~~~~~~~~~~~~~&~~~~~~~~~~~n~~~~~~~~~~~~~~~W~I);I');~I');'"'",'v '"'",I);I');');tV ~fl;I');');~~
I -+-U-Nat -+-Th-230 -.-Ra-226 -+-Pb-21 0 I
1.00E-11
1.00E-12
1.00E-13
Effluent Concentration Limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit =5E-12uCi/ml
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
_.-
BHV-2 Uranium Natural Concentrations (uCi/ml)
'i"1.00E-14
'Srn
l:fto
d,1.00E-15
"'-"-'---'-'---'-~--'-"-""----"-'---"-'----"".._---_____--__..__--_._.._.._.-___..-__.____.._..--___.__--..__._-_._-_._-_-..___.._-_._---_.___._-_.._-_..___-_.._------_._.__.__.___.._.._---_..-
•••••••••_•••M ••_.__•••_••_.______•••_••_••••___ •.,••_••.__,••__H ___•••••_ ___.._______.._____._._..___...............__-_-.'_.._____-_~----"'-~___._______._~__-_..~_-__..__._..__.___._.__..~_.................._~_.._-._.__.._~___-_____.______..__-_--_.._.._-.._.._.____ __.__._--____._._.._..__..___._._.._____.__._._.._._-
~
1.00E-16 1-----:17'--::::--
•
...~--~­----_.-_.~..:wr;....._-
-------_._-_..._..._-_._------_.__._----_..__.._._--_._.----_._-_._----_._--,
1.00E-17
1.00E-18
~~~-~~~~~~~~~~~~~~~B ~~~~~~~~~~~co ~'ti ~~C8 ~~~~~~~~5!>~~~5?l s:s 5:>5:>5:>s:s s:s ~G 5:>~~&&~&~~~~~~~~~~~~~~~~~~~&~~A~~~~~~y~~n~~~~~~~~~~~~~~~~~~~~~~~~~~v ~~~~~~~~~~~a ~
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1.00E-11
Effluent Concentration Limit =9E-13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
F-'-···----
BHV-2 Radium-226 Concentrations (uCi/ml)
1.00E-12
'I \--------.--.--------------.--.-..----------I
,_ __---_..__._--_..__._._-_._------_..___.._._.._._-_.__-_.._-_.._._._--__--____-.._---__-_.__ _.._______-___.____._-___.._..
----
\
~d!fTfi!!~f!~~ltl.f!.~--1i:;=-'===~_;;;;~~
1.00E-13
.1.00E-14
"iiuCI)
m.9-1.00E-15
1.00E-16
1.00E-17
".__._--.__."---_...._--_.....__....._-
t
-··--------==~~t=.~~
.___-.._-_._-,._-..•.•....._._..____--_.___._..__._..-.__.__.__--__-__-.
---"----...__._---_....._----
._....._.._.._-_._._...__..__.._._.._.__-_..___.._..._-_.__.___.___..._.._.__.___.._.._._._.._.__.._-_...-.-....__.._-_.__-____..__-_____..__.._.__._.-"''''--'-''--'-''--''-''----'--'''-'-'-''
1.00E-18
~~~-~~~~~~~~~~~~~~~~~~~~~~~~~~~A~~~~A~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA Goal =1E-12 uCi/ml
BHV-2 Lead-210 Concentrations (uCi/ml)
1.00E-11 _____-=:::::-"::::=:::"'-==--==-_-::::::::==_-=:"-::::::::::::::::::='=:=.::;::::'::=-_":::::::::::'-::::=::"--::..=:::::::::::::::::::::::::::::;:::==:=::::::=::::::::::==--==-.:::-.::::::-_-::::==::::::::::======::-..:::=:::::::::::::::=::::=7.:::-.::::::::::::::::::::::::-.::===::--=--==_-.:::::~=..::::':::::
:=_:==~.:::~::::==:=:===::~=:_~=~.=:==~:==~::=:::~~=::==:.:::::=::::::~~~=::=~:::::=:::::=::::::::~::=::=::::=~~::=:::~~~:::=::~~=~=~==~~::~:=~:.::::=:===::=::::::::==~::=::-::==::=:==::=::::::::::~~::=:~=::=:.~===~=----_._----------------_._-------------------------------------------\-::::::::=:::::::::::::::::::::::::::::::::::::::::::::::::_::::::::::::::::.:::::::::::::::::::::.::::::::::::::::::::::::::::::.:::::::::::::-==:::.:::=-.:::::::
1.00E-12 :.=---::..:::::c":::::.,=-=-.:.-:--==:,,.:::,::::=:::-.:::-==::.::=.::.:::..:...::::=.:===:.:.=,.:::::=:::-=.=-.::=-.::::::.:.::.:::.::.::::::=-.:::--:-=::..::.r-.::::::.:.-=::=_:::=-.:::::..::::-=::::::::.::::=..:::-=.:-::::::::.:::..=-=::.==::==::===::::.:=::::.:"=:=::.::-,,:::==::=====--====:====:,-_._----_-_..__.__._._._._.._-_.._-_.__._.--_..__.____._-_..____.._-_._._..-:::===:::::::::-..'::::::::=::.~=~-:.-~:::::==::::::::::::::::::=:::::=::~~::::::::::::::::::::::::::::::=::::::::~~::::::~~::::::::::::::::::~H-:::::::::::::::::.~:::~::::=::::~::::::::~':::::::::::~_=:::::::_._::::._::::~...._~:::::::~....=--=::::::~::::::::::::::::::::::_..:~~::::::.:::::::::::::~~:::::::::::::::=::::.-~:::::::...:::::::::::::::::_::::::::::::::::...::::::::::::::==
1.00E-13 1===-C-.=Jf --_._---
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~~~t=--~---::J::t====.=====lt-=====•••=.._..~~:-~~
CD 1.00E-14
'fif/)
Q.3-1.00E-15
1.00E-16
1.00E-17 ...._._.___.__.._-.---____._,__..-------_.._._---_--_.._.---_.___._-----_.___---._._.-_.._-_..•_-_.__.__._._.._--_.._.___-_..__._._-.._._._______._._..___..._..____.___.._-_..____--__..__._._._._-_.__.-_-..-_..__._-_.._--_.._-__.._.._.__.-_..-__._-..__.__.-___-..-__.___-_.__.------___-_._-_._-'--"-'''---'--__-__•___._.__••_••••_._••__._.._ _._••_..._•••••_••__•••_••__ _____.__ _ _••••..•••H__..___.__••__.._.__._•• ••__._••••_•••_•••_••_._._.__._••___......_..__._-_.-_ ____ _-_..- _ _ __.__ _ _.._.._.._-_..-_..__.._ _..-_._____..-__-_____-__.___,.._.._.,-_-_.-____--_,__..--_,_--.'_,__,,--_-' '___,_,,____ __,____,..
1.00E-18
~~~_b ~~~~~~~~~~~~~~~~~~~~~~~~~~~.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
QurrentUm-tef
%timeoperated
Air Volume SCFx 1r£
URANIUMNAT THORIUM-230 RADIUM-226 LEAD ·210
PERIOD GROSS LLD %GROSS COUNTING LLD %GROSS COUNTING LLD %GROSS COUNTING LLD %ENDiNG CONGo uCilcc 1E-16 MPC CONG.uCilcc ERROR lE-16 MPe CONC.uCifcc ERROR lE-16 MPC CONG Cilcc ERROR lE-16 MPe28·Sep·81 1.3SE-15 lE·16 2.7BE-02 3.69E-16 2.0DE-16 lE-16 1.23E-Ol 5.92E-16 1.35E·16 lE-16 2.9SE-02 1,67E-14 121E·15 2E-15 2.09E·OlH·Oec·81 4.62E-16 lE-16 9-24E·03 8.03E-16 3.02E-16 lE·16 2.68E-Ql 3.62E-16 1.72E-16 lE-16 1.81E-02 1.33E-14 2.28E-15 2E-15 1.66E·Ol29-Mar-82 7.07E-16 9E-16 1.41E·02 1.10E-15 6A9E-16 3E-15 3.67E-Ol 7,27E-16 3.S6E-16 4E-15 3.64E-02 1.52E-14 3,63E-15 2E·14 1,SOE-01
30·Jun·B2 8.B4E-16 7E-17 1.77E·02 7.73E-16 2,39E-16 SE-17 2.58E-Ol 4.78E-16 1.6SE-16 3E-16 2.39E-02 1,9SE-14 1,7SE-15 2E·15 2ABE·01
27-Sep-82 1.23E-15 lE-16 2A6E-02 3.60E-16 1.35E-16 lE-16 1.20E-01 S.73E-16 2.71E·16 lE-16 4.37E·02 2.35E-14 5.43E·15 2E·15 2.94E·Ol
3·Jan·S3 2.64E·15 5E-17 5.2SE-02 2,55E-16 1.03E-16 5E-17 S.50E-02 1.98E-16 5.66E-17 5E-17 S.90E-03 2.85E-14 2,50E-15 2E·15 3.56E-Ol4-Apr-83 2.14E-16 5E-17 4.28E-03 1.02E-16 3.98E-17 5E-17 3AOE-02 1.57E-16 763E-17 5E·17 7.85E-03 2ABE-14 1.1SE-15 SE-16 3.1OE-Ol
30·Jun·83 2.S5E-16 5E-17 5.70E-03 2.06E-16 505E-17 BE-17 6.87E-02 2,24E·16 8.68E-17 1E-16 1.12E-02 1.79E-14 9.94E-16 8E-16 2.24E-Ol
3-0ct·83 2.70E-16 5E-17 5AOE-03 3.36E-16 6.49E-17 4E-17 1.12E·01 4.37E-16 9,81E·17 5E-17 219E·02 1,78E-14 1.0SE-15 4E-16 2.23E·Ol
3-Jan-84 2.78E-15 lE-16 5.56E-02 1.20E-16 1.11E-16 lE-16 4.00E-02 6.64E-17 4.52E-18 6E-17 3.32E-03 9.14E-15 1.46E·15 2E-15 1.14E-Ol
2-Apr-S4 4.28E-16 5E-17 8.56E·03 1.75E-16 5.18E-17 5E-17 5.83E-02 4.57E-17 5.Q3E-17 8E-17 2.2SE·03 3.55E-14 U9E·15 2E·15 4.44E-01
2-Ju\-84 2,78E-15 5E-17 5.56E-02 8.12E·16 3.35E-16 OE+OO 2.71E-Ol 1.98E-16 1.00E-16 lE·16 9.S0E·03 1.68E-14 1.20E·01 1E-15 2.10E-Ol
1·Qct-84 2.69E-16 5E·17 5.38E·03 2.66E-17 8.02E·17 1E-16 8.87E.()3 O.OOE+OO 1.17E-16 1E-16 O.OOE+OO 1.77E-14 1.22E-15 9E-16 2.21E·Ol
2·Jan·85 2.15E-16 5E-16 4.30E-03 7.55E-16 2.03E-16 9E-17 2.52E·Ol 2.87E·16 l.14E-16 lE-16 1.44E·02 3.19E-14 1,55E+00 lE-15 3.99E-Ol
1-Apr-85 O.QOE+OO 5E-17 O.OOE+OO 1.67E-16 1.75E-16 3E-17 5,57E-02 S.75E-17 7,S9E-17 8E-17 3.38E-03 7.56E·15 8.83E·16 8E-1S 9.45E-02
1-Jul-85 3.70E-17 5E-17 7.40E-04 9.00E-1S 4.76E-14 3E-16 3.00E·01 490E·17 1,05E-16 9E-17 2.45E·03 1.31E-14 1.32E-15 lE·15 1.64E-Ol
30-Sep·85 9.32E-17 5E-16 1.86E-03 2.18E-16 4.63E-17 3E-16 726E·02 3.71E·16 4,64E-17 7E·17 1.86E·02 3,64E-15 2.85E-16 2E-15 4.55E-02
2-Jan-86 #DIV/O!lE-15 #DIV/O!2,16E-16 1.12E·15 7E-16 7,20E-02 2.15E-17 2.31E-16 2E-16 1,08E-03 3.04E-16 1,71E·15 2E-15 3,80E·031-Apr·86 1.31E-15 2E-18 2,61E·02 1.50E·16 7.18E-17 5E-1S 5.00E·02 3.71E-16 8ASE-17 4E·18 185E-02 2.90E-15 2.10E-16 9E-17 3.63E·02
30-Jun·86 2.23E-16 1E-17 4.47E-03 1.32E-16 4.32E-17 2E-17 4,39E-02 7.0SE-17 8.61E-18 4E·18 3.55E-03 2.53E-14 2.60E-15 3E-15 3.16E.Q1
27-0ct-88 6.41E-16 lE-l8 1.28E-02 1,74E-16 4.00E-17 2E-18 5.80E-02 3.67E·16 1,OOE-16 lE-18 1.84E·02 1.04E-14 2.00E-16 3E-18 1.30E-Ol
15·Dec-86 3.56E-16 3E-18 712E-03 O.OOE+OO 2.00E-17 2E-17 O.OOE+OO 1,OSE·16 5.00E-17 3E-17 5,25E'03 7.81E-15 1.00E-16 3E-17 9.76E·0216·Mar-S7 5.31E-16 3E-18 1,06E·02 1.30E-16 4.00E-17 5E-18 4.33E-02 7.74E-11 3.00E·17 4E·18 3,87E-03 3.80E-14 1,OOE·15 6E-18 4.75E-Oll1-May·87 4.06E-16 4E-18 S.12E-03 6.63E-17 7.00E·17 4E-18 2,21E-02 1.34E-16 4.00E-17 4E-18 6.70E·03 1.10E-14 3.00E·16 2E-17 1.38E·01
9-Sep·87 2.74E-16 8E-18 5A8E-03 2.38E·16 5.00E-17 6E-17 7.93E·02 1.38E-16 6.00E·17 2E·17 6.\lOE.Q3 1.04E-14 3.00E-16 lE·16 1.30E-01
2·Noy-87 3.73E-16 lE·17 7.46E-03 3.11E-16 8.00E·17 6E-18 1.04E-Ol 1,83E-16 7.00E-11 6E-17 9.15E-03 117E-14 3.00E-16 3E-17 1,46E·Ol
16-Feb'B8 2.78E-15 5E-18 5.56E·02 2.31E-17 5,OOE-17 2E-17 7.70E·03 1.20E·16 3.00E-17 3E·17 6,00E'03 3,55E-14 2.00E-16 5E-17 4.44E.()1
18-May·88 4,63E-16 3E-18 9.26E-03 1.49E-16 5.00E-17 2E-17 4.S7E-02 2.30E-16 6.00E-17 2E·17 1l5E-02 118E-14 2.00E-16 4E·17 1.48E.()115-Aug-88 8.06E-16 3E-18 1.61E-02 8.69E-16 1.50E·16 lE-17 2,90E-Ol 1.80E-16 4.00E-17 2E·17 9.00E-03 1,42E·14 2.00E-16 2E-17 U8E-Ol
14·NoY·88 4.34E-16 3E-18 8.6SE-03 6.76E-16 6.00E·17 1E-17 2.25E-01 1.57E-16 3,OOE-17 lE-17 7.85E·03 2.25E-14 2.00E-16 3E-17 2.81E·Ol
13-Feb-89 5.80E·16 4E-17 1.16E-02 2.85E-16 3.09E-17 4E-17 9.50E-02 1.55E-16 2.32E-17 2E-16 7.75E·03 2.80E·14 2.32E-16 5E-16 3.50E·Ol
l5·May.89 5.06E-16 7E-18 1,01E-02 2.28E-16 7.00E-17 7E-18 7.60E·02 1.63E-16 3.00E-17 7E·18 8.15E·03 6.05E·15 1.00E-16 4E-17 7,56E·02
14-Aug·89 4.71E-16 2E-18 9A2E-03 9.60E-16 8.00E-17 8E·18 3,20E·Ol 1,26E-15 1.00E-16 8E·18 6.30E·02 6.6SE-15 1.00E·16 4E·17 8.31E·02
13·Noy-89 1,14E-15 2E-17 2.27E·02 4.08E-16 6.00E-17 3E-18 U6E-01 4.l8E-16 6.00E-17 7E-18 2.0SE-02 1.59E-14 3.00E-16 2E-17 1.9SE-Ol
12-FeM!0 1.09E-15 4E-18 2.18E·02 3.25E-16 7.00E-17 7E-18 1.08E-01 3.74E·16 9.00E·17 3E·17 1.87E-02 1,98E-14 3.00E-16 SE-17 2.48E-01
14-May-90 9.32E·16 lE-16 1.86E-02 5,27E-16 1,OOE-16 lE-16 U6E·01 3.97E·16 1.00E·16 lE·16 1,99E-02 169E-14 300E·16 2E-16 211E·Ol
13·Aug.90 1,66E-16 lE-16 3.32E·03 5.4SE·16 3.00E·17 1E-16 1.B3E-01 475E-17 2.00E-17 lE-16 2.38E·03 1.27E·15 2.00E-16 2E-16 1.59E-02
12·Noy-SO 6.05E-16 lE-16 121E-02 2.64E·16 6.00E-17 lE-16 8.80E-02 1.93E-16 4.0DE·17 lE·16 9.65E·03 2.25E-14 3.00E-16 2E-16 2.81E·Ol
l1-Feb·91 B.72E-17 lE·16 1.74E-03 7.00E-18 1,60E-17 lE-16 2.33E-03 3.33E·17 1.80E-17 lE-16 1,67E-03 3.49E-14 1,00E-15 2E-16 4.36E·Ol
13·May·91 116E·16 lE-16 2.32E·03 3.86E-16 9.00E-17 lE·16 1,29E·01 2.80E·16 7.00E-17 lE-16 1,40E-02 1,50E-14 1,00E-15 2E·15 1.88E-Ol
l2-Au9-91 9.02E-17 lE-15 1.80E-03 8.82E·17 5.00E-17 lE·16 2.S<lE·02 7.65E-17 6.00E·17 lE-16 3.83E-03 158E·14 3.00E-16 2E·15 1.98E·Ol
l1-NoY·Sl 4.81E-17 lE-16 9.62E-04 3.82E-17 2.00E-17 2E-17 1.27E-02 2.54E-17 2.00E·17 2E-17 1.27E·03 1.45E-14 4.00E-16 lE-16 1.81E-Ol
10-Feb·92 1.54E-16 lE-16 3,08E·03 6.82E-17 4.00E-17 2E-17 2.27E-02 lAOE·17 2.40E-17 2E·17 7.00E-04 3.41E-14 6.00E-17 lE-16 <l,26E-01
l1-May-92 2,38E-16 lE-16 4.76E·03 7,63E-17 4.00E-17 2E·19 2.54E·02 3.07E-11 3.00E-17 2E-19 1.54E-03 1.27E-14 2.00E-16 lE-18 1.59E·Ol
10-Aug·92 1,01E·16 2E-18 2.02E-03 7.07E·17 2,60E-17 4E·18 2.36E·02 2.80E-17 4.20E·17 2E·18 1,40E-03 1A1E-14 2,00E·16 2E·17 1.76E-Ol
9·Noy-92 5.20E-17 3E-21 1,04E-03 3,65E-17 2.40E·17 4E-18 1.22E-02 U8E-17 2.80E-17 3E·18 8.90E·04 1,71E·14 2.00E-16 2E·17 2.14E-Ol
9·Feb·93 2.39E-16 lE-22 4.78E·03 2.97E-17 6.30£·17 4E-18 9.90E·03 6.31E-17 5,OOE-17 3E-18 3,16E·03 3,41E-14 5.00E-16 2E-17 4.26E-Ol
10-May·93 O.OOE+OO 3E·18 O.OOE+OO 711E-17 5.00E-17 <lE·18 2.37E·02 3.l9E·17 3.20E·17 3E-18 1,60E·03 1,34E-14 200E-16 2E-17 1.68E-01
10·AuS-93 1.90E-16 2E-18 3.80E-03 O.OOE+OO 3,70E·17 4E-18 O.OOE+OO O.OOE+OO 8.10E·17 3E-18 OOOE+OO 1.80E·14 4,00E-16 2E-17 2.25E-Ol
8·Noy-93 O.OOE+OO 2E-18 O,OOE+OO O.OOE+OO 5.90E-17 4E-18 O,OOE+OO O.OOE+OO 1,90E-16 3E·18 O.OOE+OO lA9E-14 2.00E·16 2E-17 1.85E-017-Feb-94 2.23E-16 2E-18 3.72E·Ol O.OOE+OO 6.00E-17 4E-18 O.OOE+OO 1.84E-16 2.00E·16 3E·18 2.04E·02 2.19E-14 5.00E-15 2E-16 3.65E+OO9·May.94 216E·16 2E·17 3.60E·01 7.20E-17 8.00E-17 4E·18 2.40E·01 9.89E·17 7.00E-17 3E-17 1.10E-02 1.37E-14 3.00E-16 2E-16 2.28E+OO
9-Aug-94 9.29E·17 1E-16 155E·Ol 2.96E-16 2,23E-16 4E·18 9.87E-01 3,04E·16 3.04E·17 lE-16 3.38E..Q2 O.OOE+OO 214E·16 lE-16 O.OOE+OO
7·Noy.g4 9.21E-17 1E-16 1.54E-01 2.35E-16 3.16E-17 4E-18 7.83E-Ol 1.00E-16 1,26E·17 lE-16 1.11E-02 OOOE+OO 5.29E·17 1E·15 O.OOE+OO
7-Feb-95 1,18E-16 lE·16 1,97E·Ol 9,10E-17 1.00E·16 4E-18 3.23E·Ol 9.70E·17 1,00E-16 lE·16 1.08E-02 742E-15 3.5SE-16 lE·15 1,24E+-oO
9-May·95 9.40E·17 lE·16 1,57E-Ol 1.20E-16 1.00E-16 <lE-18 4.00E-01 3.50E-16 3.25E-17 lE·16 3.89E·02 3.90E-15 lS0E-17 lE-16 6.S0E·Ol9·Aug·S5 8.90E-17 lE-16 1,48E-Ol 9.67E-17 lE·16 3.22E-01 135E-16 3.94E-17 1E-16 1.50E-02 2.38E-16 2.00E-15 2E-15 3.97E·02
11-NoY·95 2.83E-15 1E-16 4.72E+00 4,09E·16 3.45E-17 2E·16 136E+00 5,23E-16 7.34E·17 2E-16 5.81E·02 6.77E·15 6,35E·16 lE-15 113E+00
5·Feb-ge 1.75E-15 lE-16 2.92E+OO 8.66E-16 4.90E·17 lE-16 2.89E+00 4.86E-16 5.80E·l?lE·16 5.40E·02 3.50E-15 2.76E-16 1E·16 5.83£-01
6·May·96 140E-16 lE-16 2,33E·Ol 115E-16 1.90E·17 lE-16 3.83E·Ol 1.00E-16 NA lE-16 l.l1E-02 6.85E-15 5.44E-16 lE-16 1.14E+00
5-Aug-96 1.43E-16 lE-16 2.38E·01 2.78E-16 3.07E-17 lE-16 9.27E·Ol 1.00E·16 NA lE·16 l11E·02 5.83E-15 3,07E-16 lE-16 9.72E·016-NoY·96 1.45E-16 1E-16 2.42E·Ol 1.57E-16 2.97E-17 lE-16 5.23E·01 1,OOE-16 NA lE·16 111E-02 119E-14 4.51E-16 lE-16 1.98E+OO
6-Feb·97 1.00E-16 lE-16 1.67E·Ol 1.00E-16 NA lE-16 3.33E·Ol 1.QOE·16 NA lE-16 l11E·02 5.84E-15 3.S6E·17 1E·16 9.73E-02
5·May-97 1,00E-16 lE·16 1,67E-Ol 1,00E-16 NA lE-16 3,33E-Ol 1,00E-16 NA lE·16 1.11E·02 3.89E-15 2.87E-16 lE-16 6.48E·01
11·Aug·97 <1,OE-16 lE-16 O.OOE+OO 1,09E-16 2.29E-17 lE·16 3.63E·Ol <1,OE·16 NA 1E·16 O.OOE+OO 5.69E-15 3.17E·16 lE-16 9.48E·Ol
5·Jan-98 2.55E-16 lE-16 4.25E-01 107E·16 NA lE-16 3.57E·Ol 5.00E·17 NA lE·16 5.56E·03 5.11E-15 NfA lE-16 8.52E·0128-Apr-98 1.20E·16 1E·16 2.00E·Ol 171E-16 1.23E·17 lE·16 5.70E·01 128E-16 7.68E-18 lE-16 1,42E-02 6.40E·15 3.04E-16 lE·16 1,07E+00
31-Jul·98 1,47E·16 lE-16 1,63E·Ol 4.24E-16 2.77E·17 lE-16 141E+00 3.39E-16 3.21E-16 lE-16 3.77E·02 4.80E-15 3.21E-16 lE·16 8.00E-Ol
28-Sep-98 <1.0E-16 lE-16 <111E-l <1.0E-16 NA lE-16 <333E·Ol <1,OE-16 NA lE·16 <1.11E·02 4,26E-15 214E-16 lE-16 7.11E·Ol
2B·Dec-98 2.54E-16 lE-la 2.83E-Ol 21SE-16 1.54E-17 lE·16 717E·Ol 1.3BE·16 6.l5E·18 lE-16 1,54E-02 6.88E-15 2.23E·16 lE-16 115E+OO
29·Mar-99 1.07E-16 1E-16 U9E-Ol <::1.0E-16 <::1,OE·16 lE-16 <::3.33E·Ol <10E·16 <::1,OE·16 lE-16 <1.llE-02 7.61E·15 3,00E·16 lE·16 1.27E+00
3·Jul-99 2.46E·16 lE-16 2,74E·Ol <::1.0E-16 <10E-16 lE-16 <::3.33E-01 <1,OE-16 <::1,OE·16 lE-16 <1,11E·02 6.95E-15 3.28E-16 1E·16 116E+00
27-Sep·99 2,81E·16 lE·16 3.12E·Ol 1.41E-16 137E·17 lE-16 4.70E·Ol <::1,OE-16 <::1.0E·16 lE·16 <1.11E·02 735E-15 3.09E·16 lE·16 1,23E+OO
28-0ec-99 5.20E-16 1E-16 5.78E·01 2.60E-16 3,05E-17 lE·16 8.66E-Ol 2.01E-16 2.44E·17 lE·16 2,33E·02 700E-15 3,26E-16 lE·16 117E+00
27·Mar·00 <1.0E-16 1E-16 <1.11E·Ol <1.0E-16 NA lE·16 <3.33 E·01 <::1.0E·16 NA 1E-16 <1.11 E·02 712E-15 3.05 E-16 lE-16 1.19E+OO
26-Jun·00 1.10E-16 lE-16 1.22E·Ol <1.0E-16 1.87E-17 lE·16 <3.33 E·Ol 116E-16 1.42E-07 lE·16 1,29E-02 5,07E-15 2.76E·16 lE·16 8.45E-Ol
26·Sep-00 <::1.00E-16 lE·16 O.OOE+OO <::1.0E-16 NA 1E-16 <::3.33E-01 <::10E-16 NA lE-16 <::1.11E·02 5.31E-15 1,69E-16 lE·16 B.85E-Ol
26-0ec-00 1.26E-16 lE-16 1AOE·Ol <1.0E-16 NA 1E·16 <3.33E-Ol <::1,OE-16 NA lE-16 <1.11E·02 9.45E-15 2.38E-16 lE-16 158E+OO
26·Mar-Ol <1,OOE-16 lE-16 <::111E-Ol <1,00E-16 NA lE·16 <3.33E-Ol <1,OE-16 NA lE-16 <1.11E-02 6.95E·15 3.72E-16 1E-16 116E+OO
2-Ju!·01 <1.00E-16 1E-16 <1.11E-Ol <::1.00E-16 NA lE·16 <::3.33E·Ol <10E·16 NA lE-16 <1.11E-02 6,56E-15 1.27E·16 lE-16 1.09E+00
24-Sep-Ol <::1.00E·16 lE-16 <111E-01 <1.00E-16 NA 1E-16 <3,33E·Ol <1.0E·16 NA lE-16 <::111E·02 6,16E-15 1,50E·16 1E·16 1.03E+00
31·Dec-Ol <1.00E-16 lE-16 <1.11E-01 <1.00E-16 NA 1E-16 <3.33E-Ol <1,OE-16 NA lE-16 <::1.l1E·02 2.20E-15 1,72E-16 1E·16 3.67E-01
1-Apr-02 <::1.00E-16 lE·16 <l11E-Ol <1.00E-16 NA lE·16 <3.33E-Ol <1.0E-16 NA lE-16 <::1.11E·02 9.95E-15 174E-16 lE-16 1.66E+OO
1-Jul·02 1.25E-16 lE-16 1.39E-Ol 1.43E-16 1.38E-17 lE·16 4.77E-Ol <::1.0E-16 NA lE-16 <1.11E·02 8.25E-15 1.77E·16 lE-16 1A2E+OO
30·Sep.02 <1.00E-16 lE-16 <1,11E-Ol <::1,OOE-16 NA lE-16 <3,33E·01 <::1,OE·16 NA lE-16 <1.11E-02 3.69E-15 8.97E-17 lE-16 6.15E-Ol
30·0ec-02 <1,00E-16 lE·16 <::1,11E·01 <1.00E-16 NA 1E-16 <3.33E·Ol <1,OE-16 NA lE·16 <::111E·02 6.91E-15 1.41E·16 lE-16 1,15E+00
31·Mar-03 <1.00E-16 1E·16 <1,11E·Ol <::1.00E-16 NA lE-16 <3.33E-Ol <1.0E-16 NA lE-16 <::1.11E-02 6.16E-15 1.30E-16 lE-16 1,03E+00
30-Jun·03 <1.00E-16 lE-16 <111E·Ol <::1.00E-16 NA lE·16 <3.33E·Ol <1.0E-16 NA lE-16 <1.l1E·02 5.27E-15 129E-16 lE-16 8.78E·01
2S-Sep·03 <::1.00E-16 100E-16 <::111E-Ol <1.00E-16 NA lE-16 <::3.33E·Ol <::1.0E·16 NA lE-16 <1.11E·02 7.23E-15 1.85E·16 1E·16 1.20E+00
29·Dec-03 <::1.00E-16 100E-16 <::U1E-01 <1.00E-16 NA lE-16 <::3.33E·Ol <::1,OE·16 NA lE-16 <1,11E-02 7.80E-15 1.76E-16 1E·16 1.30E+00
29-Mar-04 <1,00E·16 100E-16 <111E-Ol <1.00E-16 NA 1E·16 <::3.33E·Ol <1.0E-16 NA lE-16 <::111E-02 2.04E-14 3.25E-16 2E-15 3,40E+00
27·Jun·04 <1.00E-16 1.00E-16 <111E.()1 <::1.00E-16 NA lE·16 <3.33E-Ol <1,OE-16 NA lE-16 <::1.11E-02 3.09E-15 2.08E-16 2E-15 5.15E·01
27-Sep·04 <::1.00E-16 100E-16 <1.11E-01 <::1,00E-16 NA lE-16 <3.33E-Ql <1-0E·16 NA lE·16 <1.11E-02 1,73E-14 3.53E-16 2E-15 2.89E+00
27·0ec-04 <::1.00E-16 1.00E-16 <::1.11E-Ol <1.00E-16 NA 1E-16 <3,33E-01 <1,OE-16 NA lE-16 <1.11E·02 1.30E-14 1,90E·16 2E-15 216E+00
28·Mar-05 <1,OOE-16 100E-16 <::1.11E-Ol <::1.00E-16 NA lE-16 <3,33E-01 <1.0E-16 NA lE-16 <111E-02 8.88E-15 1.51E·16 2E-15 1.48E+00
29-Jun-05 <1.00E-16 100E·16 <111E·Ol <1,00E-16 NA 1E-16 <::3.33E·01 <1,OE-16 NA lE·16 <::1.11E-02 8.85E-15 1,72E-16 2E-15 1.47E+OO
26·Sep-05 <::1.00E-16 100E-16 <1.11E·01 1.S9E-16 2.36E-17 1E·16 6.65E-Ol 1.44E-16 3.19E·17 lE-16 1.60E-02 3.81E-14 7.61E-16 2E-15 6.36E+00
3-Jan·06 1.29E-16 1.00E-16 lA3e4-01 <::1.00E-16 NA lE-16 <3.33E·01 4,08E-16 5,69E'17 lE-16 4,54E-02 6.58E-14 7.87E-16 2E-15 1.10E+01
3·Apr-06 1.02E·16 100E-16 1.14E·Ol <1.00E·16 NA 1E-16 <3.33E·Ol <::1,OE·16 NA 1E-16 <1.11E·02 108E-14 5.geE·16 2E·15 1.BOE+003·Jul-06 <::1.00E-16 ~.~~~~~:~<1.00E-16 NA lE-16 <3.33E·Ol <::1.0E-16 NA lE-16 <111E-02 <1.85E-16 2E-15 1,84E+00
02·0ct-06 1.30E-16 <::1,00E-16 NA lE-16 <3.33E.Ql <::1.0E-16 NA lE-16 <::1.11E-02 1,68E-14 7.61E-16 2E-15 2.80E+00
01-Jan-07 1.24E-16 1.00E·16 1.38E·01 <::100E-16 NA lE·16 <::3.33E-01 <1,OE-16 NA lE-16 <::1.11E·02 138E·14 7.38E-16 2E-15 2.30E+00
2-Apr-07 1.40E-16 1.00E-16 1.56E-Ol <::1.00E-16 NA lE-16 <::3..33E·l <::1.0E-16 NA lE-16 <1.11E·02 1.63E-14 4.31E-16~2.72E+00
2-Ju:'()7 1.04E·16 1.00E-16 1.15E-Ol <1.00E-16 NA lE·16 <3..33E-1 <1.0E-16 NA 1E-16 <::1,11E-02 1.36E-14 5,94E-16~2.27E+0030-Sep-07 <::1E-16 1,00E-16 <111E.0l!<1.00E-16 NA lE-16 NA <1.0E·16 NA lE-16 <111E·02 8,24E-15 3.0<lE-06~1.37E+00
31-Dec·07 1.91E-16 1.00E-16 212E-Ol <1,00E-16 NA lE-16 NA <1.0E-16 NA lE-16 <1.11E·02 118E-14 3.14E-06~1.97E+00
30-Mar-08 <1.00E-16 1.00E-16 l11E-Ol <::1.00E-16 NA lE-16 NA <1.0E·16 NA lE-16 <1.11E-02 6A9E-15 3.82E-16~1.08E+00
30-Jun-08 1.29E-16 1.00E-16 1.43E·Ol <::1.00E-16 NA lE-16 NA <1.0E·16 NA 1E-16 <1.11E-02 4.82E~15 4.51E-16 2E-1S 8.03E·01
30-Sep'08
31-Dec-0S
2,37E-16 100E-16 2.63E·Ol
5.71E-16 1.00E-16 6.34E·01
<::1.00E-16 NA
1.61E-16 5.54E-17
lE-16 <3,33E-l <1.0E·16
1E·16 5.37E·Ol 1.25E-16
NA
2.35E-17
lE-16 <1.11E·2
lE-16 1.3SE-02
8.30E·15
2.04E-14
4.51E-16 2E·15 1.38E+00
5.54E-16 2E·15 3,41E+00
Tab 3
1.00E-12
1.00E-13
1.00E-14
CDB
f/)1.00E-15
D)o-'-
1.00E-16
1.00E-17
BHV-3 Radionuclide Concentrations (uCi/ml)
::::::::::::: :: :::: :: :: :: :: :::::: :::.:::::. :.:::::::::.:::::: :::.:::::::::::::.:::::::::'::::.:.:::. :.:.::.:.:.:::::.:.:::.:.:. :. :.:.:: :::::: :: :.:.:::.:::::::::.:::::::::::: :::::::::::::: ::::::::::::
=============================~====~===--~===~=======~==================-~f-·---
1.00E-18
"-~Cb
)'::>
~Cb~
)'::>
~q,n;,
)'::>
I>-~q.;
)'::>
~q,<ry
)'::>
<0~<o
)'::>
:'\~q,
)'::>
~q,q,
)V
~Cb~
)V
~~C)
)V
"-~~)V
~~~
)'::>
r.,~~)'::>
I>-~Oj
)'::>
~~<-:>
)'::>
E.V-Nat.--~h-230 .....-Ra-26 ---Pb-210]
EHluent Concentration limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit =5E-12uCi/ml
Pre 1994 ALARA Goal =1.25E-12 uCi/mI
BHV·3 Uranium Nat.Concentrations (uCi/ml)
1.00E-11
1.00E·12 ------
---------==============================================--------------
::::::::::::::::::==::::====::=::::-:.:::::::::::::::::::::=:::::::::===============::::::======,----- --- - ------------ ---- - - - - --.---- --- - --..- - - ----- - - - - ---- ----- ---- - - --- ---- ---- ----- ---..- - ---- - - ----- -- ------ --- - - - - - -----~- - - - - - - - --- - - --.-- -- - -- --- ---- - - - - - ----- --- - - - - --- - ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
==============================~=~=~=======~:~=-~=~=============================================,----i
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------_.._--------------------------------------------------------------------------------------------------------------------------------------------- -- ---- - ----- - --- ------------ --- ------- - -------------------_.-------- --------- ----- - - - --- - - - -----------------------------------------------_._------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- - - - --- - - -----------.------- - --- ---- --- - - - -- - ---
======~=============================================------------------------------------------------------------------------------------------------------------------------------._----------------------_._------------------------------------------------------- -- ----- - -- ---------- --- ----- ------ -----.- -----.-------- - - --- -------- - - ------
1.00E-13
1.00E-14
1.00E·16
1.00E-15
1.00E-17
-G)
'iiiu(/)
0)o-I-
1.00E-18
'"~Cb
)V
~Cb~
)V
~corl.:J
)V
~q,t><
)V
~'b<O
)V
~~C13
)V
~~co
)V
~'bCO
':Jv
~~co
)V
~Oj<:)
"':,v '"~Oj
)V
~Oj~
"':,v
~Ojrl.:J
"':,v
l>:~C?J
)V
~Oj~
)V
1:c .._-----------------------------------------------1.00E-11
1.00E-i2
Effluent Concentration Limit =2E-14 uCi/ml
ALARA Goal =5E-13 uCi/ml
Pre 1994 MPC Limit =8E-14uCi/ml
Pre 1994 ALARA Goal =2E-14 uCi/ml
BHV-3 Thorium-230 Concentrations (uCi/ml)
1.00E-13
'i'i.00E-14
'iiu(/)
eno
:::!.1.00E-iS
i.00E-16
1.00E-17
i.00E-iS
~~~~~~~~~',,,'~~~~~~~~~~~~~~~~~~~~~~'~~~~~~~~~~~~~~~~~~~~~~~~~~~'~~'~~~~~~~~~~~~"~~
~~~~~~~~~~=~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~N====i
-~~~~~f{~~~~~~~~~f.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~':",~~"~~~~~~'~~~~'~'~"""':'~'~~"""~~--~'-"'~~~~~~~[~'~"'-',~:~,~~,~~~~~~~
,~~~~~~~~~~~~~~9 9 ~~,,~~~~~~b b~Cb !b ~Cb !b ~Cb !l'~q;)~~q;~~<?3 !b ~q,!B ~q)9>~q;~~~~~~~~~~::-:~~~~~~Oj~~~~~~~~~~~~~#~#~#~#~#~#~#~#~
1.00E-11
Effluent Concentration Limit =9E-13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
BHV-3 Radium-226 Concentrations (uCi/ml)
1.00E-12
1.00E-13
CD 1.00E-14
~(/)
tno
d.1.00E-15
1.00E-16
1.00E-17
1.00E-18
l::::_:::::::::::::::::::::::::::==::==_::=_==_:=::==:=::::-_::::::--::_::_:=::_~=:crl---------------------------------------------------------"---------------------------------i
---------------------------------------------------------------------------------------
~~~~~~~~~~~A ~~~~~~~,,~~~~~~b b~'b !O ~'b !b ~'b ~~q)9)~co !B ~q;;~~q,~~qJ ~~co ~~OJ ~~Oj ~~Oj ~~Oj !?j ~OJ ~~OJ~#~#~#~#~#~#~#~#~#~#~#~#~#~#~
Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA Goal =1E-12 uCi/ml
BHV-3 Lead-210 Concentrations (uCi/ml)
1.00E-11
1.00E-12
1.00E-13
G)1.00E-14
B(/)
C)o
d.1.00E-15
1.00E-16
1.00E-17
-----------------------------------------------_._----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------~-~-----~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~:::(S~~~-l--- --- - - - -- ---- - - - --- -- - ----- --..- --..- --- ----- -.-.- -- ---- - - - ----- -- -- -.---- -------- - --
-----_.--------------------------------
I =========== : : :~==:== =: :~=: ::=: :~::.:-::::~:: : : : : : : : =:=: : : : =:====: :=: ==:.:======: =: =======- - ---- - - -----.-- - --- - - ------- - - --..- -- -_.-- --.---.-- ----- -------- - - - - --------- ----- -- - - ---- ---------------- -- - -------.- -_.----------- -- --- ---......- ----- - --- ------ ------ - - ------ -- --- ------ -- --------------------------
-------=: : : :~~: : : : : : : : : : : : : : : - - - - - - - ----------------------------------------------
l ,',,,,,0 ,,,,',',,',',,,,,,,',~',,,,,,,0 ,',,,,,,,,0 ,,,',,,,,,,',,,',,,,,,,,','0 ,',,'0 0 ,,'-- -
:====~~~~~~~~~~~~~~~~~~~~~~~~~=~1~~~~~~~~~~~~=~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I --------- -0 - - - - - - - - --lJl--------------~------------------------ ----- ---- -- ------- - - - - ------- - ---.----------- -.- - --- - -------------- ---------------------------------------------_._-----------------------------------:::::::::::::=::::::::::::::~=-------------------------------------------------------------------- - ------ ------ ---- - - - --- - - - - - - ---- ----------.----- --- - --- - - - -- - - - - ------ - - - --- - ---- - -.--- - - - - - ---- - --- - - - --- ---
-----.--- - --------- - - - - --- --- - - ---- - - - --- -- ------- - ----- --- ------------ - - ------ - - - - - ------- --- - -- ----- ----- ---- --- ----------- ---- --- ----- ------ - -_.---- - ------ -- - --- - --- - -- - - -- - - - - --- ---- ---- - ------ ----- - - ------ --.---- - -- -- - - - - - ----------~.----- - - - --------- ------.- - --- - - ----- ---.-- - - ------ - ---- -- -- ----- --- - - ------ - - - -- - ----------------- - -.----- - ------- -- --- -_.-- ---- --- - --- --- --.--- - ------- ---- - ---- -..---- ---- - - --- - - -- - - - - - - - ---- - - ----- - -.----- ----_.---- ---- ------ - ---- ----- ----- --- - ---- ---- -------- ---- ---_.--- - - ------- - - - - --------- ----------- - ----- - ------- - -- -------------- - - - - ----- - - -------- ---- ----- ----- -------- - - --- -- -- ---- ------------ --- --.---.-- - - - -- - --- - - - ------ --- - - --- ----- - -- - - ----
--------------------------_._---------------_.._--_._-----------------------------------------------
1.00E-18
.....~tO
)V
~tO~
)V
~~tO-:,'5
b<~q;
)'5
~~q;
-:,'5
~~CB
-:,'5
;'\~tO-:,'5
~'bCO
-:,'5
~~q;
-:,'5
Rl~Oj
-:,'5
.....~Oj~..:s ~Oj~
-:,'5
~Oj":>
,:,'5
b<~~~'5
~Oj<s,
~v
WHITE MESA MILL
LOCATION:'·:::Eif.i\l~:3:::
CurrentQuart6f
%lime operated '"2ed ',d 4th
A'VrJ,SCF 1GB".urne ,
URANIUM NAT.THORIUM-230 RADIUM-226 LEAD -210
PERIOD GROSS LLD %GROSS COUNTING LLD %GROSS COUNTING LLD %GROSS COUNTING LLD %
ENDING CONC.uCifcc 1E-16 MPC CONC.JCilcc ERROR lE-16 MPC CONC.uCi/cc ERROR lE-16 MPC CONC.Ci/cc ERROR lE-16 MPC
28-Sep-81 U4E-15 lE-16 3,48E-02 9.02E-16 4.46E-16 lE·16 3.01E·01 2.87E-16 2.23E-16 lE-16 1,44E-02 1.54E-14 2.53E-15 2E-15 1.93E-Ol
l4·Dec-81 1.59E-15 lE-16 3.18E-02 5.03E·16 3.09E-16 1E-16 1.68E-Ol 1.30E-16 1.38E·16 lE-16 6.50E-03 2.25E-14 2.l3E-15 2E-15 2.81E-01
29-Mar-82 3.76E-16 9E-16 7.52E-03 5.25E-16 6.38E-16 3E·15 U5E-01 4.08E·16 3.72E-16 4E-15 2.04E-02 1.96E·14 348E-15 2E-14 2A5E-Ol
30-Jun-82 3.83E-16 5E-17 7,66E-03 2.l6E-16 2.24E-16 6E-17 7.20E-02 lA1E-15 1.03E·15 2E-16 1.05E·02 2.40E·14 2.l0E-15 2E-15 3.00E-Ol
27-SeJr82 5.95E-16 lE-16 1,19E-02 1,44E-15 2.74E-16 lE-16 4.80E-Ql 5.36E-16 2.35E-16 lE-16 2.68E-02 l43E-14 3.00E-15 2E-15 U9E-Ol
3-Jan-83 2.05E·16 5E-17 4.1OE-03 1,23E-16 3.llE-17 2E-17 4.l0E-02 1.lOE-16 S.52E-17 7E-17 5.50E-03 3.01E-14 2,10E-15 2E-15 3,76E-01
4-Apr-83 1.00E-16 6,94E·17 2.31E-17 SE-17 2.31E-02 6.11E-17 5.95E-17 8E·17 3.06E-03 1.39E-14 1.00E-15 lE-15 U4E-Ol
30-Jun-83 3.06E-16 1E-16 6.12E-03 9.59E-17 1.52E-16 2E-16 3.20E-02 2.08E·16 L62E-16 2E-16 1.04E-02 1,70E-14 2.00E-1S 2E-15 2.13E-Ol
3-0ct-83 1.91E·16 lE-16 3.82E-03 3.05E-16 4.98E-17 6E·18 1.02E-Ql 2.79E-16 5.73E-17 lE-17 1.40E-02 1.76E-14 4.83E·16 lE-16 2.20E-Ol
3-Jan-84 3.01E-16 lE-16 6.02E·03 9.51E·17 6l9E-17 lE-16 3.17E-02 1.00E-16 5.73E-17 1E-16 5.00E-03 9.17E-1S 5.l0E-16 5E·16 1.l5E-01
2-Apr-84 8.22E-16 5E-17 1,64E-02 1.52E-16 U2E-16 5E-l?2,51E-Ol 5.20E-17 4.89E-17 7E-17 2.60E-03 347E-14 1.70E-15 lE·15 4.34E-Ol
2-Jul-84 5,29E-16 5E-17 1.06E-02 6.l8E-16 7.89E-16 8E-16 2.06E-Ql 1.40E-16 9.l5E·17 lE-16 7.00E-Q3 1.32E-14 9.99E·16 lE-14 1.65E-Ol
1·0ct-84 U4E-18 5E·17 3,48E-03 71OE-17 6.l6E-17 4E-17 2.37E-02 1.00E·16 9.15E-17 lE-16 S.OOE-03 1.08E-14 1.22E-1S lE-15 1.35E·Ol
2·Jan-8S 1,OOE-17 5E-18 2.00E-04 71OE-17 1.27E-16 7E·17 2.37E-02 7.80E-17 9.3SE-17 7E-17 3.90E-03 2.73E-14 1.26E-15 8E·16 3.41E-Ol
l-Apr-8S 1.00E-16 SE-17 2.00E-03 2.76E-16 2.02E-16 7E·17 9.20E-02 4.1OE-17 6.82E-17 6E-17 2.0SE-03 1.12E·14 9,33E-16 8E-16 1.40E-Ol
1·Jul-85 1.04E·16 SE-17 2.08E-03 O.OOE+OO 4.76E·14 4E-16 O,OOE+OO 1.00E-16 9.36E-17 6E-17 5.00E-03 1.64E·14 1,24E-15 8E-16 2.0SE-Ol
30-Sep-85 O,OOE+OO 5E·16 O.OOE+OO l,OOE-15 1.31E-16 7E-17 3.34E-Ol 1.00E-16 4.66E-17 7E-17 5,OOE-03 1.73E-14 1.01E-15 8E-16 2.16E-Ol
2-Jan-85 1.03E·15 lE·15 2.06E-02 3.17E-16 3.71E·15 4E·15 1.06E-Ol 1.2SE-16 4.49E·16 3E-16 6.2SE-03 1.21E-17 3,51E-15 4E·1S 1.51E-04
l-Apr-86 8.04E·16 2E-18 1.61E-02 1.93E-17 6.94E-l?6E·18 6A2E-03 1.54E-16 8.33E-17 4E-18 7,71E-03 1.69E·14 4.07E·16 lE-16 2.12E-Ol
30-Jun-86 4.29E-16 2E-17 8.S8E-03 U7E-16 2.l8E-17 lE-17 5,89E-02 2.83E-16 1.72E·17 5E-18 1A2E·02 1.97E-14 1,50E·15 2E-15 2,46E-Ol
27-0ct-86 6.45E·16 lE·18 1.29E-02 Ra9E-17 4.00E·17 2E-18 3,30E-02 4.16E·15 1.OOE·16 2E-18 2.08E-Ol 1,64E-14 2.00E·16 4E·la 2.05E-Ol
l5-0ec-86 1.31E-16 3E-18 2.62E-03 O.OOE+OO 2,OOE·17 2E-17 O.OOE+OO 4.l6E·17 4.00E·17 3E·17 2.08E-03 4,60E-15 1.OOE-16 3E·17 S.75E-02
l6-Mar-87 2,01E-16 3E-18 4.02E-03 120E·16 4.00E-17 5E-18 4.00E-02 5.73E-17 3.00E-17 4E-18 2.87E-03 1.60E-14 1.00E·15 6E-18 2.00E-Ol
ll-May-87 2.l6E·16 4E-18 4.32E-03 1.96E-16 g.OOE-17 4E-18 6.S3E-02 7.38E-17 3.00E-1?4E·18 3.69E-03 1.59E-14 2.00E·16 2E·17 1,9SE-Ol
9-Sep-87 2.41E-16 2E-17 4,82E-03 2,18E·16 1.50E-16 2E-16 7.27E-02 3.52E·17 1.1OE·16 7E·17 1.76E-03 1.46E-14 1.00E-1S lE-16 1.83E-Ol
2-Nov-87 2.44E·16 4E-17 4.S8E-03 2.32E-16 6,OOE-17 4E·18 7.73E-02 2.37E-17 3.00E·17 4E-17 U9E-03 2.48E·14 5.0DE-16 2E·17 3.1DE-01
16-Fe1r88 8.08E-16 6E-18 1.62E-02 2.55E·16 6.00E-17 2E-17 8.50E-02 3.42E-16 5.00E·17 3E-17 1.71E-02 5.61E·14 3.00E-15 6E·17 7.01E-Ol
l8-May-88 l14E·16 3E-18 2.28E-03 4.l4E-17 1,OOE-16 1E-17 1,38E-02 1.00E-16 4.00E-1?lE·17 S.OOE-03 1.20E-14 1.00E·16 4E·17 1.S0E-Ol
l5·Aug-88 2.08E-16 3E·18 4.16E-03 3,06E-16 8.00E·17 1E-17 1.02E·Ol 3.65E-17 3.1OE·l?2E-17 1.83E-03 1.36E-14 2.00E·16 2E-17 1.70E-Ol
l4-No\l-88 4.21E-16 3E·18 8A2E·03 2.93E·16 3,OOE-17 lE-17 9.77E-02 1.09E·16 2.00E·17 lE-17 5.45E-03 2.48E-14 1.00E-16 3E-1?3.lOE-Ol
l3-Feb-89 4,4SE-16 4E-17 8,9OE-03 4.?8E-17 1.65E-17 lE·16 1.59E-02 2,47E-17 1,65E-17 2E-17 1,24E-03 3.34E-14 3.29E-16 5E-16 4.l8E-01
l5-May-89 1.05E-16 lE-18 2.l0E-Q3 O.OOE+OO 1,60E·17 7E-18 O.OOE+OO 2,45E-17 1.40E-l?7E-18 1.23E-03 6.56E·15 1.00E-16 3E-17 8.20E-02
l4-Aug-89 1.31E-16 2E-18 2.62E-03 5.85E·17 21OE-17 9E-18 1.95E·02 3.97E-17 3.60E-17 9E-18 1.99E-03 6.7SE-15 1.00E-16 5E-17 8,44E-02
13-Nov-89 1.67E-16 2E-17 3.35E-03 3.87E-17 4.00E-17 3E-18 1.29E-02 8.03E-17 3.00E·17 8E-18 4.02E-03 1,69E-14 3.00E-16 2E-17 2.11E-Ol
12-Feb·90 4.43E-16 3E·18 8.B6E-Q3 O.OOE+OO 4.00E-I?7E-18 O.OOE+OO 3.5QE-17 4.00E·17 2E·17 1.75E-03 2.37E-14 3.00E-16 4E-17 2.9BE-01
l4-May-gO 3.84E·16 lE-16 7,68E-03 2.54E-16 1.00E-16 lE·16 8,47E-02 1.02E-16 6.00E-17 lE-16 5.l0E-03 1,68E·14 3.00E-16 2E·16 2,10E-01
l3-Aug-90 7.27E-17 lE-16 lASE-03 2.87E-16 2.00E·17 lE-16 9,57E-02 1.21E·17 2.00E-17 lE·16 6.05E·04 7.86E-15 2.00E-16 2E-16 9.83E-02
l2-Nov-90 1.84E-16 lE-16 3.68E-03 1.34E-16 6.00E-17 lE·16 4,47E-02 8.53E-17 4.00E·l?lE-16 4.27E·03 2.01E-14 4.00E-16 2E·16 2.51E-Ol
11-Feb-9l 4.66E-17 lE-16 9.32E-04 8.48E-16 8.00E·17 lE-16 2.83E-Ol 1.94E·17 1,60E·17 lE-16 9.70E-04 3,6gE·14 1.00E-15 2E-16 4.61E·Ol
l3-May·91 5.05E·17 1E-16 1,OlE-03 740E·17 6.00E-17 lE-16 2.47E-02 7.00E-18 4.00E-17 lE-16 3.50E-04 1.50E·14 1,OOE·15 2E-15 1.88E-Ol
l2-Aug-9l ?14E·17 1E-18 1.43E-03 6.22E·17 B.OOE-17 1E-16 2,07E-02 7.95E-17 8.00E-17 lE-16 3.98E-03 1.77E-14 5.00E-16 2E·15 2.21E-Ol
l1-Nov-91 1,41E-17 lE·16 2.82E-04 2.19E-18 3,OOE·16 2E-17 7.30E-04 2.75E-17 2.0GE-17 2E·17 1,38E·03 ll8E-14 2.00E-16 lE-16 lABE-Ol
1O-Feb-92 B,12E-17 lE-16 1.62E-03 2.3SE·17 3.80E-17 2E-17 7,83E-03 2.76E·18 1,30E-17 2E-l?1.3BE-04 3.57E-14 6.00E-17 lE·16 4,46E-Ol
ll-May-92 9.18E-17 lE-16 1.84E-03 5.80E-l?2.00E-16 2E-19 193E-02 3,36E-17 3.00E·17 2E·19 1,68E-03 1.28E·14 2.00E-16 lE-18 1,60E-01
1O-Aug.92 2.00E-18 2E·1B 4,OOE-OS 4.19E-17 2.30E-17 4E-18 1.40E-02 2.00E-18 4.30E-17 2E-18 1.00E-04 1.59E·14 2.00E-16 2E-1?1.99E-01
9·Nov-92 4.00E-17 3E-21 8.00E-04 2.68E-17 1.80E·17 4E·18 8,93E-03 1.07E-17 2.1OE-l?3E-18 5.35E-04 1.81E-14 2.00E·16 2E·17 2.25E-Ol
g-Feb-93 7.94E-17 lE-22 1,59E-03 O,OOE+OO S.30E-17 4E-18 O.OOE+OO 1,09E·16 9.00E·17 3E-18 5A5E-03 2.e9E-14 4.00E-16 2E-17 3.36E-01
10-May-93 1.60E-17 3E-22 3.20E-04 5,07E·17 4.40E·17 4E-18 1,69E·02 7.64E-17 4.00E-17 3E-18 3.82E-03 1,26E-14 2.00E-16 2E·17 1,S8E-Ol
10·Aug-93 6.00E-l]2E-18 1.20E-03 6.00E-18 3.40E-17 4E-18 2.QOE-03 1.00E-16 4.30E·17 3E-18 5.00E-03 1.50E·14 3.00E·16 2E-17 1.88E-Ol
8-Nov-93 1.00E-16 2E-18 2.0GE-03 O.OOE+OO 4.20E-17 4E-18 O.OOE+OO 100E·16 1,50E-16 3E·18 5,OOE-03 2.l0E-14 4.00E-16 2E-17 2.63E-Ol
7·Feb-94 1,61E-16 2E-16 2.68E-Ol O.OOE+OO 6,OOE-17 4E·18 O,OOE+OO 2.22E-16 2.20E·16 3E-18 2.47E-02 2,23E-14 4.0DE-16 2E·l?3.72E+OO
9-May·94 2.77E-16 2E-17 4.62E-01 2.80E-17 140E-16 4E-17 9.33E-02 8.37E-18 1,OOE-16 3E-17 9.30E-04 1,40E·14 4.00E-16 2E-16 2.33E+OO
9-Aug-94 7,39E-17 1E-16 1,23E-Ol 1.00E·16 1.00E-16 1E-16 3,33E-Ol 114E-16 2.02E-17 lE-16 1.27E-02 1.00E-16 1,88E-16 2E-16 1.67E-02
7·Nov-94 9,05E-17 lE-16 1.51E-Ol 1,OOE-16 1.00E-16 lE-16 3.33E-Ol 1.00E-16 7.64E·18 lE-16 ll1E-02 1.00E-16 1.l6E·16 2E-15 1.67E-02
7-Feb-95 799E-l?lE-16 1.33E-Ol 9.60E-17 1.00E-16 lE-16 3,20E-Ol 9,60E-17 1.00E·16 lE·16 107E-02 9,05E-15 4.?3E-16 lE-16 1.51E+OO
9-May-95 9.40E·17 lE-16 1.57E-Ol 9,80E-17 100E-16 lE-16 3.27E-01 8.60E-17 1.00E-16 lE-16 9.S6E-03 2.88E-15 1.70E·16 lE·16 4.80E-01
9-Aug·95 730E-17 lE-16 l22E-Ol 9.20E-17 lE-16 3,07E-Ol 4.40E-17 lE-l6 4,89E-03 196E-15 lE-16 3.27E-01
Tab 4
BHV-4 Radiionuclide Concentrations (uCi/ml)
1.00E-11
1.00E-12
--
1-------_._.._----------------_._---_..I
1.00E-13 !=--.~~=-._.==:-.=:~:::=~=======~=c-..-.-....--..----....-
!1lU'
~..7f
:::-~.
.._._--
~'--'--­._._._----_._._-._---_._-
.~::-
::'.A:::::::::::
t==-~~w-----.--~~~----~---~..~-~-;~c,-:.:cZ~~==-=-=:=-:.
I------:t-~--.~-~--:--.-~~~=..~=
1.00E-16
1.00E-17
.1.00E-14
"3(I)
sa
d.1.00E-15
_._---
-----__._-----_.__-_._--_.._--_..__---__--_.__._--__--------_.-
1.00E-18
~~~*~~~~~~~~~~**~~*~~~~~~~~d d ~~d ~~~~~~~~~~~~~~~~~~~~~~o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 000 000 000
I ~U-Nat ~Th-230 """'-Ra-226 ~Pb-210I
-;~.----
1.00E-11
1.00E-12
Effluent Concentration Limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit =5E-12uCi/ml
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
I------
BHV-4 Uranium Natural Concentrations (uCi/ml)
----------------_._--------------
1.00E-13
---------------------_._--------_._-_._..._--------_.-----_._------_._-----------_.
1----··.---------.--.-...-.-....-.---.---...---.--.--.-.....-.-.--.-..------..-.-.--.--------.---.-------.-----.--
I .-------:-.--------
•1.00E-14
iiufI)
CIto
d.1.00E-15
1.00E-16
•
1----
~~~::-·-'-·1-···
1-..
--
_.._-
t 1
1-----·_-_···-·__·_-----_·_·_····__·_-_·_·_------_···-.-...--..----.-...-...--..-.-~-----------.---.-.-.-----.----------..---------
1.00E-17 ~:-:=-..~.-_:-c ---.--.-...-C··_.:....--.._-,_.:,-:_-._...-...__~~_--..-::_.-.-..---.---.._~~
1.00E-18
,~~-~~~~~B ~~~~-~~~~~B ~,~~-~~~~~~~~~.~~Q3 ~~~9-l ~~~~.~9-l ~5?3 ~~$:>$:>$:>)J 55 ~$:>~~#~~#~~~~~~~~~~~~~~~~~~~~~
Effluent Concentration Limit =2E-14 uCi/ml
ALARA Goal =5E-13 uCi/ml
Pre 1994 MPC Limit =8E-14uCi/ml
Pre 1994 ALARA Goal =2E-14 uCi/ml
BHV-4 Thorium-230 Concentrations (uCi/ml)
1.00E-11 F==
1.00E-12 -------_._---------_._---_._._.-._-_._._._._.._._,--_.._---_._-'-_._.._.._---_.._--_.__------_._-_._._------_._.._._----,_.__.__.__..__.__..__.._-----_.__._-__-_.-_.._._..___..-.._.__._.-.__.._..__-".._.__.._..,-_.__._----__--.-_.,---"_._._._._.._-..-_._.___.._.._.___.._.___._..__.-------._------
._----===-=---:--=:==::::=:.::==:==-----==::::=~~~=-=---=-.::::=--=:::::=-=::::::::~::::=..::::::-=:-::::::::::====:::.=:::::_-=-=--=:::::::-_.-:::::------------_._._----_..=====
I-.----.----.----.-.-..---.-----.-.-.-.-.-----------...-.-----.--------------..----------.------.----...-------.----
1.00E-13
1----..--_:.::::::::.._.----\-.:..-
--
t
\
-*
I
---=====t~:.:::;::::::-±=:t:::-::::::::_~=::::::::-====-:-=::::-··--_·----------
·--::::r::::::::::rt::....,
.-==i--~---~=----·-··-··-.........·7F~----··----_·-----·---
~=.=:_--
-=:tr--==C'=-=::=C'==:==t':...=-t:::'f.=l'f'"-==========="'-:::r=cU:~=:~-=:!==-~:~=~!!!!~-=-~m~
_.-~:=:::::::::::t:f:::::=:::-,=:...-.
t1
~--t----·-------------t
-.--.9-----=1=I=,J=£==-~_=~~=f:=J--J.I •,.,.,co....,..-,-----·---~=====:~~:==:==~=:=:==t/~=-~~~i:=N-~-t=i:==:=::\t==~=:=~=---~=-~~~t1 ",.t td/t-l-I
..--=:..:==§Ef---~~=~~,-
r=.:..-::F-
-._".------_.._-.-~-
1.00E-16
.1.00E-14
iiiCJo
Qj-1.00E-15
I------_·_··_·_~_··_·_·_·_----_·_·_-_···_-----_···__·--,---..----.---~---.----.-.-----------.-.-------------.-.-----.---.---.-
1.00E-17
1.00E-18
~~~-~~~~~~~~~~~~~~~B ~~~~-~~~~~~~~.~~~~~~5?>5?>5?>~~~5?>~~s:s })})})>Y.~s:s })~~~~~~~~~~~~~~~~~~~~~~~~~~~
1.00E-11
Effluent Concentration Limit =9E-13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
I===:~
BHV-4 Radium-226 Concentrations (uCi/ml)
1.00E-12
I -~~-----...~------.---.------
\1:=:-,=--------
1------t--
1.00E-13 ~~~_~_~~~~~=~~~-~=~-~-~~-~~_._--------_._._-_._-------_.-_.._--~_.~--_.__.----~-_..-._-----_.._------~--------------.._._.========_..__.__._-_.______--_.._.._._.~~~:____.._~~:_=_.__=======~=:::::_.__~===::=-=-==::.~===~~:=-~==-..-=:=---_.-_.=_.--==-=-=====._-:~--=----===:-_.:::::
.1.00E-14
'3U)
J-1.00E-15
1.00E-16
1.00E-17
1=----
---
----
.~---..-..--.--_.---+--.I-..---.-..-.--.-.--.-.--.-..-..-..--.----.----.---..--------..-.-..-..---..--.----.----.-.--.---.-.----.--..-~-_---.--.-~-----.-..-----.-.--.---..-.-..--.-.-------~----.--.--.----.._i
~
r~=::-::~-===:::=3==:::=~~~t~=:~::=~~~:=~1~~~~;.:~~:f:~'=::~~~~4.::f~~4~:.~::~~~~~~~~~~~~~~~~~~~~:c::~~~
1----.-~~~
_.._--_.__._.__.._.___.___._.___._..---_._-__----~._----_.._.__._---------
1.00E-18
fb.....fbt'J,fbO:>~fb~fbro ~fb'O fbOJ ~~~.....~t'J,~O:>~~~~ro ~~'O ~OJ ~~~.....~t'J,~O:>~~~~ro ~###########################
Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA Goal =1E-12 uCi/ml
BHV-4 Lead-210 Concentrations (uCi/ml)
1.00E-11
I----\-
1.00E-12 ~-_.....-...'-.._,~..t·,..~-...'.c.--...~--. -.;-..~_H _ _..H__.._...... ...._M _..._..__ __....___....__ __........_.._______.._-_.oM _
---------------------------------------------------------------- ------------..:--=--=---===--=-..::===~-~:-=_.:-_==--::-=-=---=--=---=--:=-=--::::.-::.=--=---=-=--=-=-~.:.-==.::.---=-.::--~~;=-.:::-...::.-=-=---=-..::::.::.-:---==--=--=--==-:-==-::.-=--:.=----~~:-_-=--===-_:---=-===~-=----=-.::-_----;
1.00E-13 F····_._.---
=-w:
._--._..__.___.__._.._i.~::=.::-=..::=:::-..:::=::-=__..__.._._.__..___ _ ___H..__..__..____
~_..-~=----__.___-=======_~~.-"~A fr/\_._____-====~-==~~=~_...__~~=.::__~=~~__~:~:..:.--_:-=";f
•1.00E-14
'3(I)r
e1.00E-15
l==-
I ··f-·------··---·-------·------·-----···---·----·---··..--..-.-..---..--..-I--l--.------.----------------.-.---.-----.-----.------..-
1.00E-16 ~-··-··=-·---::::c===--===--=::-=,=::--=--=-.::..-==:=.:::=.:::-.::..-===~-·--7.::::======.:::-.::,=--·-----:==---=-------.=--------1=~~~_=:~~~~=::==:=:=~:~~~~:==~::~:=:-~~J.~~:~:::~~~~~~_~~~~~~_:~~~~~~~~~~~_.~~~~~=~~:~~~~!.:::=~!~~~===~~:==.~---===:::====~===--=~:~-
1.00E-17 F=-..=:=:....---_..__.._---_._-_...._._------_._..__.....__.-,".__.-_----____.__..__._---__.._-_.._--_._-_._---.__.__._-..-..'-'_._,--_._,___--_..__-______._.
-.--.-..--.-.-..-.----..------.--------.-----I
1_00E-18
"a-~-II.b !O r\!O ~~":J,~~n..'::>&>n..'\!O Rl ~"a.,,~~",::>"co ",\$$$;ct.!O 58 $5l>!O !?J ~~~~;-J !?J ;-J 9J 95 >S j:)j:))..J S;),v )..J )..J###########################
LOCATION ::Bf.lY4·:..
2E-15 1.97E-+OD
2E-15 1.83E-+00
~2.30E+00
5.73E-16
4.72E-16
5.55E-16
118E-14
114E-14
138E-14
2,57
8.51E-02
7,29E-02
lE-16
lE-16
lE-16
NA
1.00E-16
100E-16
3.61E-16
7.66E-16
6.56E-16
lE-16 2.57~4.23
lE-16 3.67E-+OO
2.09E-16
139E-17
3.52E-16
7.72E-16
1.27E-15
1.lOE-l5
1E-16 1.42E-t00~3.02E+00
lE-16 3.21E-+OO
1,28E-15
2.72E-15
2.88E-15
30-Jun-08
3O-Sep-08
31-Doc-08
URANIUM NAT THORIUM-230 RADIUM-226 LEAD -210
PERIOD GROSS LLD %GROSS COUNTING LlD %GROSS COUNTING LLD %GROSS COUNTING LLD %
ENDING CONC.IICilcc lE-16 MPC CONC.uCifcc ERROR lE-16 MPC CONC Cllcc ERROR lE-16 MPC CONC.lJCi/cc ERROR lE-16 MPC
28-Sep-81 5.20E-15 lE-16 1.04E.ol 3.21E-15 5.70E-16 lE-16 1.07E+00 2.74E-15 6.15E-16 1E-16 137E-Ol 1.84E-14 2,72E-15 2E-15 2.30E-Ol
14-Doc-81 4.53E-15 lE-16 9.06E-02 2.93E-15 5.09E-16 lE-16 9.77E-Ol 2.29E-15 3.34E-16 1E-16 1.15E-Ol 2.54E-14 2.13E-15 2E-15 3.18E-Ol
29-Mar-82 1.06E-15 9E-16 2.12E-02 178E-15 1.12E-15 3E-15 5,93E-Ol '.07E-1S 4,71E-16 4E-15 5.35E-02 2.31E-14 4.16E-15 2E-14 2.89E-Ol
30-Jun-82 6.03E-15 6E-17 1.21E-Ol 1,42E-14 1.19E-15 6E-17 4.73E-+00 2.62E-15 3,09E-16 3E-16 1.31E-01 2.25E-14 3.00E-15 2E-15 2.81E-01
27-Sep-82 1.26E-14 lE-16 2.52E-Ol 1,57E-14 717E-15 lE-16 5.23E+00 5.35E-15 5.47E-16 1E-16 2.68E-Ol 2.68E-14 3,69E-15 2E·15 3.35E-Ol
3-Jan-83 4.33E-15 5E-17 8.66E-02 7,58E-16 1.16E-16 5E-17 2,53E-Ol 6.04E-16 9.l5E-17 6E-17 3.02E-02 2.57E-14 1.90E·15 2E-15 3.21E-Ol
4-Apr-83 1.25E-15 5E-17 2.50E-02 6.52E-16 5.55E-17 5E-17 2.17E-Ol 6.76E-16 1.36E-16 lE-16 3,38E-02 2.00E-14 1.09E-15 9E-16 2.50E-Ol
30-Jun-83 3.73E-16 1E-16 7.46E-03 717E-16 2.14E-16 2E-16 2.39E-Ol 4.13E-16 1.88E-16 2E-16 2.07E-02 1.20E-14 2.00E-15 2E-15 1,50E-Ol
3_0ct_83 2.54E-16 4E-17 5.08E-03 9.43E-16 1.l3E-16 2E-17 3.14E-01 2.65E-16 5.73E-17 3E-17 1.33E-02 2.50E-14 1.14E-15 4E-16 3.13E-01
3-Jan-84 2.76E-15 lE-16 5.52E-02 1.51E-16 3.92E-17 4E-17 5.03E-02 1.05E-16 6.79E-17 9E-17 5.25E-03 1.59E-16 8.00E-16 6E-16 1.99E-03
2-Apr-84 4.27E-16 5E-17 8.54E-03 1.60E-16 9.05E-17 lE-16 5,33E-02 6.28E-16 9.83E-17 8E-17 3.14E-02 3.67E-14 1.79E-05 lE-15 4.59E.ol
2-Jul-84 2.57E-15 5E-17 5.14E-02 2,33E-16 1.03E-16 8E-17 777E-02 1.11E-16 7.93E-17 lE-16 5,55E-03 1.58E-14 1.09E-15 lE-15 1.98E-Ol
1-0cl-84 4.18E-16 5E-17 8.36E-03 1.36E-16 6.57E-17 4E-17 4.53E-02 1.10E-17 9.55E-17 8E-17 5.50E-04 9.83E-15 1.43E-15 2E-15 1.23E-01
2-Jan-85 5.30E-17 5E-16 1.06E-03 3.54E-16 1.60E-16 5E-17 l18E·01 7.00E-18 8.98E-17 7E-17 3,50E-04 2.57E-14 1.46E-15 lE-15 3.21E·01
1-Apr-85 O.OOE+OO 5E-17 O.OOE-+OO 3,55E-17 1,97E-16 lE-16 1.18E-02 4.35E-17 6.66E-17 5E·17 2,18E·03 5.02E-15 8.76E-+OO 9E-16 6,28E-02
1-Ju\-85 9.36E-16 5E-17 1.87E.o2 6.00E-16 4.76E-14 6E-16 2.00E-Ol 2.36E-16 1.14E-16 7E-17 1.18E·02 7.48E-15 1.08E-15 9E-16 9.35E·02
30-Sap-85 1,46E-15 6E-16 2,91E-02 2,33E-16 8.01E-17 7E-17 7.78E·02 5.38E-16 1.09E-16 9E-17 2.69E-02 786E-15 7.50E-16 8E-16 9.83E-02
2-Jan·86 8.40E-15 2E-15 1.68E-Ol 7.69E-16 1.80E-15 lE-15 2.56E-Ol 2,99E-16 8.13E-16 3E-16 1,50E-02 2.12E-14 2.60E-14 5E-15 2.65E-Ol
1-Apr-86 5.79E-15 2E-18 1.16E-Ol 760E-16 9.96E-17 5E-18 2.53E·Ol 1.34E-15 5.50E·17 4E-18 6.71E-02 1.33E-14 3.08E-16 lE-16 1.66E-01
30-Jun-86 5.19E·15 lE-17 1.04E-Ol 5.80E-18 3.73E-17 4E-18 1.93E-Ol 2.20E-15 4.00E-17 5E-18 1.10E-01 714E-16 7.89E-16 lE-15 8.93E-03
27-0cl-86 4,60E-15 lE-18 9.20E-02 7.83E-16 1.10E-16 2E-la 2.61E-Ol 2.37E-15 1.00E-16 1E-16 1.19E·01 1.13E-14 2.00E-16 3E-18 141E.ol
15-Dec·86 2.75E-15 3E-18 5,50E-02 4.67E-16 9,00E-17 2E-17 1.56E-Ol 9.39E-16 1.00E-16 4E-17 4.70E·02 1,20E-14 2.00E-16 4E-17 1,50E-Ol
16-Mar-87 4.64E-15 3E-18 9.28E-02 5.90E-16 120E-16 8E-18 1.97E·Ol 4.97E-16 1.00E-16 6E-18 2.49E-02 5,89E-14 1.00E-1S 1E-17 7,36E-Ol
l1-May-87 4,35E-15 6E-18 8.70E-02 118E-15 2.00E-16 6E-18 3.93E-Ol 113E-15 1.00E-16 6E-17 5.65E-02 2,21E-14 6.00E-16 3E-17 2.76E-Ol
9-Sep-87 6.39E-15 8E-18 1.28E-Ol 123E-14 1.00E-15 1E-16 4.10E+OO 2.26E-15 2,00E-16 4E-17 1.13E-Ol 1.57E-14 1,00E-15 lE-16 1.96E-Ol
2-Nov-87 6,72E-15 6E-18 1,34E-01 1.50E-14 1.00E-15 4E-18 5.00E+00 2.20E-15 2.00E-16 6E-18 110E-Ol 2.55E-14 1.00E-15 3E-17 3.19E-Ol
16-Feb-a8 1.91E-15 5E-18 3,82E-02 4.53E-16 7.00E-17 2E-17 1.51E-Ol 4.42E-16 6.00E-17 2E·17 2.21E·02 4.44E-14 2,00E-16 5E-17 5.55E.ol
18-May-88 1,78E-14 3E-18 3.56E-Ol 135E-14 3.00E-16 2E-17 4.50E-+00 4.92E-16 800E-17 2E-17 2.46E-02 1,38E-14 2.00E-16 4E-17 1,73E.ol
15-Aug-88 756E-15 4E-18 1.51E-Ol 4.39E-14 1.o0E-15 1E-17 146E-+Ol 1.51E-15 100E-16 2E-17 755E-02 1.97E-14 2.00E-16 2E-17 2.46E-Ol
14-Nov-88 1.47E-14 4E-18 2.94E-Ol 3.31E-14 3.00E-16 lE-17 1.10E+01 2.57E-15 1,00E·16 lE-17 1.29E-01 2.12E-14 2.00E-16 3E-17 2.65E-01
13-Feb-89 2.47E-15 4E-17 4.94E-02 1,S6E-15 1.02E-16 lE-16 5.20E-Ol 6.94E-16 5,10E-17 2E-16 3.47E-02 2,12E-14 3.06E-16 5E-16 2.65E-Ol
15·May-89 2.50E-16 lE-18 5.00E·03 3.14E-15 1.00E-16 7E-18 1.05E-+00 9,03E-16 7.00E-17 7E·18 4.52E-02 8.05E-15 1.00E-16 4E-17 1.01E·Ol
14_Aug_89 6.50E-15 5E-17 1.30E-Ol 7.68E-15 2.00E-16 9E-18 2,56E-+OO 2.35E-15 2.00E-16 9E-18 U8E-Ol 9.95E-15 1.00E-16 5E-17 1.24E-Ol
13-Nov-89 9.63E-15 2E-17 1.93E-Ol 4.72E-15 2.00E-16 3E-18 1,57E-+00 4.03E·15 2.00E-16 8E-18 2,01E-Ol 1,99E-l4 3.00E-16 2E-17 2.49E-Ol
12-Feb-90 8.92E-15 3E·18 1.78E-01 4.05E-15 2.00E-16 6E-18 1,35E+00 2.89E-15 2.00E-16 2E-17 1.45E-Ol 2,69E-14 2.00E-16 4E-17 3.36E-01
14-May-90 8.90E-15 lE-16 1.78E-Ol 3.56E-15 3,00E-16 lE-16 1.19E+00 2.33E-15 2,00E-16 lE-16 1,17E-01 2.09E-14 400E-16 2E-16 2.61E-Ol
13-Aug-90 1.92E-15 lE-16 3.84E-02 3.58E-15 8.00E-17 lE-16 1.19E-+00 5.06E-16 6.00E-17 lE-16 2.53E·02 8.86E-15 2.00E-16 2E-16 l11E-Ol
12·Nov-90 2.91E-15 lE-16 5.82E-02 1.87E-15 2.00E-16 lE-16 6.23E-Ol 1.08E-15 100E-16 lE-16 5.40E-02 219E-14 4.00E-16 2E-16 2.74E-Ol
l1-Feb-91 167E-16 lE-16 3.34E-03 2.25E-17 21OE-17 lE-16 7.50E-03 6.38E-H 250E-17 1E-16 3.19E-03 4.19E-14 1.00E-15 2E-16 5.24E·01
13-May-91 1,87E-16 lE-16 3.74E-03 789E-16 1.00E-16 lE-16 2.63E-01 3.54E-16 9.0DE-17 lE-16 1.77E-02 1,40E-14 1,OOE-15 2E-15 U5E-Ol
l2-Aug-91 4.85E-16 lE-16 9.70E-03 2.elE-15 2.00E-16 lE-16 8.70E-01 1.27E-16 800E-17 lE-16 6.35E-03 2.20E-14 5.0DE-16 2E-15 2,75E-Ol
11-Nov-91 177E-16 lE-16 3.54E-03 4.38E-16 700E-17 2E-17 1,46E-Ol 3.76E-17 3_00E-17 2E-17 1.88E·03 115E-14 2.00E-16 lE-16 1.44E-Ol
1O_Feb·92 1.83E-16 lE·16 3.66E-03 1.46E-16 6.00E-17 2E-17 4.87E-D2 1.33E-16 400E-17 2E-17 6.65E-03 3.35E-14 6.00E-17 lE-16 4,19E-Ol
l1-May-92 4.40E-16 lE-16 8.eOE-03 1.95E-15 100E-16 2E-19 6.50E-Ol 4.04E-16 8.00E-17 2E-19 2.02E.o2 1,41E-14 2.00E-16 lE-18 1.76E-Ol
1O_Aug_92 9.09E-17 2E¥18 1.82E-03 2.56E-16 4.00E-17 4E-18 8.53E-02 4.50E-17 4.60E-17 2E-18 2.25E-03 1.57E-14 2.00E-16 2E-17 1.96E-01
9-Nov-92 2.07E-16 3E-21 4,14E-03 1.15E-16 3.00E-17 4E-18 3.83E-02 3.62E-17 2,80E-17 3E-18 1.81E-03 2.24E-14 3,00E-16 2E-17 2.80E-Ol
9-Feb-93 U3E-16 1E-22 3.46E-03 O.OOE-+OO 800E-17 4E-18 O.OOE-+OO 2.89E-17 430E-17 3E-18 1.45E·03 3.08E-14 5.00E-16 2E-17 3.85E·Ol
10.May-93 2.70E-17 3E-22 5.40E-04 2.76E-17 3.20E-17 4E-18 9.20E.Q3 8.74E-17 5,00E-17 3E-18 4.37E-03 1.25E-14 2.00E-16 2E-17 1,56E-01
10-Aug-93 9.00E-17 2E-18 1.80E-03 2.50E-17 3.90E-17 4E-18 8.33E-03 O.OOE-+OO 3.70E-17 3E-18 O.OOE-+OO 1.50E-14 3.00E-16 2E-17 1.88E-Ol
8·Nov-93 O.OOE+OO 2E-l8 O,OOE+OO 1,76E-16 9.00E-17 4E-18 5.87E-02 6.00E-17 1.80E-16 3E-18 3.00E-03 1,75E-14 4.00E-16 2E-17 2.19E-01
7-Feb-94 1,10E-16 2E-16 1.83E-Ol O.OOE-+OO 1.58E-16 4E-18 O.OOE+DO 2.21E-16 2.30E-16 3E-18 2,46E-02 3.08E-14 6.00E-16 2E-17 5.13E-+00
9-May-94 3.80E-16 2E-17 6.33E.ol 3,38E-16 1.20E-16 4E-17 113E+00 3.46E-16 100E-16 3E-17 3.84E-02 1,73E-14 2,00E-16 2E-16 2.88E+OO
9-AU9-94 3.85E-16 lE-16 6.42E-Ol 2.82E-16 9.81E-17 lE-16 9.40E-Ol 1,00E-16 1.73E-17 1E-16 l11E-02 1,00E-16 1,00E-16 2E-15 1,67E-02
7-Nov-94 6.21E·17 lE-16 104E-Ol 3.53E-16 4.21E-17 lE-16 1,18E-+00 196E-16 206E-17 lE-16 2.18E-02 1.00E-16 1,00E-16 2E-15 1.67E-02
7-Feb-95 3,70E-16 lE-16 6.17E·Ol 9.70E-17 1.00E-16 lE-16 3.23E-Ol 9,70E-17 3.02E-17 lE-16 1.08E-02 8.84E-15 3.89E-16 2E-15 1.47E+00
9-May-95 9.40E·17 lE-16 1.57E-Ol 9.80E-17 1,OOE-16 1E-16 3.27E-01 1.90E-16 2,48E-17 lE-16 2,11E-02 2.90E-15 170E-16 2E-15 4.83E-Ol
9-Aug-95 1,45E-16 lE-16 2A2E-Ol 2.86E-16 3,78E-17 lE-16 9.53E-01 710E-17 3.62E-17 lE-16 789E-03 2.70E-15 217E-16 2E-15 4.S0E-01
l1-Nov-95 1,43E-14 1E-16 2.38E+Ol 2,31E-15 1.24E-16 2E-16 7.70E+OO 2.61E-15 751E-17 2E-13 2.90E-01 5.60E-15 2,48E-16 lE-15 9.33E-Ol
5-Feb-96 1,19E-14 1E-16 1.98E-+01 5.70E-15 1.95E-16 lE-16 1.90E-+Ol 6,10E-15 1,80E-16 lE-16 6.78E-Ol 6.48E-15 3.78E-16 lE-le 1,08E+00
6-May-96 4.55E-16 lE-16 7,5SE-Ol 3.80E-16 31OE-17 lE-16 1,27E+00 2,84E-16 1.47E-17 lE-16 3.16E-02 7.68E-15 5.74E-16 lE-16 1.28E+00
5-Aug.96 7.78E-16 lE-16 1.30E-+00 3,57E-15 2.42E-16 1E-16 119E-+01 1.69E-16 1,42E-17 lE-16 188E-02 490E-15 2.92E-16 lE-16 8,HE-01
6-Nov-96 1,36E-15 lE-16 2,27E+00 3,51E-15 1.66E-16 1E-16 1.17E+Ol 4.21E-16 3.98E-17 lE-16 468E.o2 1.10E-14 4,35E-16 lE-16 1,83E+00
6·FBb-97 1,00E-16 lE-16 167E·01 100E-16 NA lE-16 3.33E-Ol 1.03E-16 1.55E-17 lE-16 114E-02 6.76E-15 3.27E-16 lE-16 113E-+OO
5-May-97 1,00E·16 lE-16 1.67E-Ol 140E-16 2.51E·17 lE-16 4,67E-Ol 2.24E-16 167E-17 lE-16 2,49E-02 455E-15 2.84E-16 lE-16 758E-Ol
11_Aug_97 4.74E-16 NfA 7,90E-Ol 4.00E-16 3.96E-17 lE-16 1.33E-+00 <10E-16 NfA lE·16 O.OOE+OO 5.55E-15 2.90E-16 1E-16 9.25E·Ol
5-Jan-98 8.31E-16 lE-16 1,39E-+00 9.07E-16 NfA lE-16 3.02E+00 177E-16 NfA lE-16 197E-02 5.28E-15 NfA lE-16 8.80E-Ol
28-Apr-98 3,32E-16 lE-16 5.53E-01 4.82E-16 2,61E-17 lE-16 1.61E+00 1.21E-16 7.68E-18 1E-16 1,34E-02 7,43E-15 3.24E-16 lE-16 1,24E+00
31-Ju!-98 4.60E-16 lE-16 5,11E-Ol 4.43E-15 1,29E-16 lE-16 1.48E+01 3.54E-16 1.23E-17 lE-16 3.93E-02 6.91E-15 3.66E-16 lE-16 115E-+00
28-Sep-98 4.08E-16 lE-16 4.53E-Ol 9.02E-16 5.22E-17 lE-16 3,01E-+OO 2.53E-16 1.08E-17 lE-16 2.81E-02 4.52E-15 2,09E-16 1E-16 753E-Ol
2a·Dec-98 7,72E-16 lE-16 8.58E-Ol 4.93E-16 2.61E-17 lE-16 1,64E-+00 3.43E-16 3.07E-17 1E-16 3.81E-02 6.73E-15 2.20E-16 lE-16 112E+00
29-Mar-99 5,11E-16 lE-16 5.68E-Ol 3,75E-16 219E-17 lE-16 1.25E-+00 3.70E-16 152E-17 lE-l6 4.11E-02 8.96E-15 3,58E-16 lE-16 1.49E-+00
3-JuI-99 5.90E-16 lE-16 6.56E-Ol 4.70E-16 3.04E-17 lE-16 1,57E+00 1.28E-16 6.75E-18 lE-16 1.42E-+00 6.40E·15 3.51E-16 lE-16 107E+OD
27-Sep-99 1.70E-15 lE-16 1.89E+OO 9,89E-16 5.91E-17 lE-16 3.30E+00 4.61E-16 3.71E-17 lE-16 5.13E·02 7,86E-15 3,49E-16 lE-16 1.31E-+OO
28-Dec-99 1,03E-15 lE-16 115E+OO 7.50E-16 6.92E-17 lE-16 2.50E+OO 2.43E-16 2.87E-17 lE-16 2,70E-02 6.42E-15 3,46E-16 lE-16 1,07E+00
27-Mar-00 <1.00E-16 1E-16 <1.11E-01 7,50E-16 1,93E-17 lE-16 OO-Jan-OO 2.20E-16 8,93E-18 lE-16 2,45E-02 S.61E-15 2.86E-16 lE-16 9.34E-Ol
26_Jun_00 U5E-16 lE-16 2.92E-Ol 213E-16 1.89E-17 lE-16 710E-Ol U1E-16 1.29E-17 lE-16 123E.o2 3.92E-15 2.51E-16 lE-16 6.53E.ol
26-Sep-00 3,65E-16 lE-16 3.95E-Ol 3.0BE-16 l.34E-17 1.E-16 1.03E-+OD 2,24E-16 744E-18 lE-16 2,49E-02 7.79E-15 219E-16 lE-16 130E+00
26·Dec-OO 2.27E-16 lE-16 2.52E-Ol 2.01E-16 1.04E-17 lE-16 6.70E-01 4.35E-16 104E-17 lE-16 4.83E-02 B.45E-i5 2.25E-16 lE-16 1.41E-+00
26-Mar-Ol 1,45E-16 lE-16 1.61E-01 <100E-16 NA lE-16 <3.33E-01 <100E-16 NA lE-16 <1.11E-02 6.37E-15 3,58E-18 lE-16 1,06E-+00
2-Ju!-01 <1.00E-16 lE-16 NfA <1,00E-16 NfA lE-16 3,33E-Ol <100E-16 NIt\lE-16 <1.11E-02 6.99E-15 1.30E-16 1E-16 1.17E+00
24_Sep_01 1.91E-16 1E·16 2.12E-01 1.05E-16 2.82E-18 lE-16 3,51E-Ol 2,01E-16 245E-17 1E-16 2,32E-02 8.04E-15 1.64E-16 lE-16 1.34E+00
31-Dec-Ol 1.38E-16 lE-16 1.54E-Ol <1.00E-16 NfA lE-16 <3.33E-Ol <100E-16 NfA lE-16 <111E-02 1.83E-15 1.64E-16 lE-16 3.06E-Ol
1-Apr·02 2,20E-16 lE-16 2,44E-Ol 2.05E-16 2,68E-17 lE-16 6.85E-Ol L26E-16 744E-18 lE-16 1-41E·02 7,48E-15 1.62E-16 lE-16 1.25E-+OO
1-Ju!-02 1,S7E-16 lE-16 219E-Ol 3,38E-16 3,27E-16 lE-16 113E+00 <1.00E-16 NfA lE-16 <1,11E-02 740E-15 1.80E-16 lE-16 113E-+OO
30-Sep-02 2.30E-16 lE-16 2,56E-Ol 4,10E-16 3.13E-17 lE-16 1,37E+00 1.56E-16 5.95E-18 lE-16 1,73E·02 4,21E-15 L03E-16 lE-16 7.01E-Ol
30-Dec.o2 <1.0DE-16 lE-16 <1.11E-01 2,42E"16 1,79E-17 lE-16 8.05E-Ol <1.00E-16 NfA lE-16 <1,11E-02 9.42E-15 4.68E-15 lE-16 1,57E-IOO
31-Mar-03 2.50E-16 lE-16 2.78E-01 1,92E-16 U1E-17 lE-16 6.39E-01 129E-16 2A8E-18 lE-16 1.44E-02 4.55E-15 1,18E-16 lE-16 7oS8E-Ol
30-Jun-03 <1.00E-16 lE-16 <111E-Ol 1.69E-16 1.56E-17 1E-16 5.46E-Ol <1.00E-16 NfA 1E-16 <111E-D2 4.20E-15 118E-16 lE-16 7.01E-Ol
29-Sep-03 <1.00E-16 lE-16 <1,11E-Ol 2.87E-16 2.42E-17 lE-16 9.56E-01 3,32E-16 2.42E-17 lE-16 3.68E-02 8.69E-15 1,88E-16 lE-16 1.45E-I00
29-Dec-03 1,02E-16 lE-16 1.13E-Ol 8.53E-16 3.55E-17 lE-16 2.84E+00 1.49E-15 5.97E-17 lE-16 1.66E-01 9,45E-15 1.95E-16 lE-16 1.58E-+00
29-Mar-04 <1.00E-16 lE-16 <1.11E-Ol <1.00E-16 NfA lE-16 <3.33E-Ol <1.00E-16 NfA lE-16 <1.11E-01 <2,OOE-15 NfA 2E-15 <3.33E-Ol
27-Jun.o4 <1.00E-16 lE-18 <1.l1E-01 1.26E-16 9.73E-18 lE-16 4.21E-Ol <1,OOE-16 NfA lE-16 <111E-Ol 3.23E-15 2.11E-16 2E-15 5.53E-Ol
27-Sep-04 <1.00E-16 lE-16 <111E-01 2.53E-16 1,39E-17 1E-16 8,44E-Ol <1,00E-16 NfA lE-16 <111E·Ol 9,68E·15 2.50E-16 2E-15 1.61E-I00
27-Dec-04 <1.00E-16 lE-16 <111E-Ol 1.1SE-16 9,78E-18 1E-16 3.83E-Ol <1.0DE-16 NfA 1E-16 <111E-Ol 137E-14 1,96E-16 2E-15 2,29E+OO
28-Mar-05 <1,00E-16 lE-16 <111E-Ol 2.30E-16 1,80E-17 lE-16 7,68E-Ol 3.15E-16 2.91E-17 lE-16 3.51E-02 9.22E-15 1,54E-16 2E-15 1.54E+00
29_Jun_05 1,47E-16 1E-16 1.63E-Ol 2.66E-16 2.22E-17 lE-16 8.85E-Ol 1A2E-18 1.66E-17 lE-16 1.58E-02 9,34E-15 1.65E-16 2E-15 1,56E-+00
26-Sep-05 2.01E·16 lE-16 2.23E-01 1.45E-15 9,43E-17 lE-16 4.82E-+00 4.80E-16 5.95E-17 lE-16 5.33E-02 212E-14 6,39E-16 2E-15 3.53E-+00
3-Jan-06 4.54E-16 lE-16 5.05E-Ol 2.06E-16 2.36E-17 lE-16 6.87E-Ol <1.00E-16 NfA lE-16 <1.11E-Ol 3.60E-14 6.27E-16 2E-15 5.99E-+00
3-Apr-06 1.99E-16 lE-16 2.21E-Ol 1,24E-16 3.20E-17 1E-16 4.12E-01 <1.00E-16 NfA 1E-16 <111E-Ol 8.36E-15 4.42E-16 2E-15 1.39E+00
3-Jul-06 2.76E-16 lE-16 3.07E-Ol 1,32E-16 2,40E-17 lE-16 4.41E·01 <1,OoE-16 NfA lE-16 <U1E-Ol 1.03E-14 4.79E-16 2E-15 1.72E+00
2-0ct-06 4.97E-16 lE-16 5.52E-Ol 2.63E-16 5.93E-17 1E-16 8.77E-Ol <1.00E-16 --N-A--lE-16 <U1E-Ol 1.60E-14 5.83E-16 2E-15 2.66E-+00
1-Jan-07 6.46E-16 .......1£.J..L.7.18E-Ol 2.37E-16 5.93E-17 lE-16 9.11E-Ol <1.00E-16 5.93E-17 lE-16 <1.11E-Ol 2.10E-14 6.73E-16 2E-15 3,SOE+00
2-Apr-07 7.08E-16 lE-16 7.86E-Ol 2,81E-16 4.62E-17 ~9.37E.ol <1.00E-16 NA lE-16 <1.11E-02 1.54E-14 4,22E-16 2&15 2.57E+00
2-Ju\·07 9.41E·16 ~1,05E-+00 3.20E-16 6.96E-17 ~1.07E-+00 1,99E-16 853E-17 lE-16 2.21E-02 2.S6E-14 8.20E-16 2&15 4.26E+OO
30-Sep-07 3,30E-16 ~3.67E.o1 1,46E-16 3.30E-16 ~4.85E-Ol <1.00E-16 NA lE-16 <111E-02 7,57E-15 2.94E-16 2&15 1.26E+00
31-Dec-07 1.42E-15 ~1.58E-+00 5.50E-16 1,42E-16 ~1.83E-+00 <1.00E-16 NA lE-16 <111E-02 9.93E-15 2.91E-'16 2&15 1.65E-+00
31·Mar·08 1,25E-16 lE-16 1.39E-Ol <1.00E-16 NA lE-16 <0.333 <1.00E-16 NA lE-16 <3.33E-Ol 4,09E-15 3.04E-16 2E-15 6.81E-Ol
Tab 5
BHV-5 Radionuclide Concentrations (uCi/ml)
1.00E-11 -_.-
1.00E-12
I -------.-------------.---..-------.----...--------------.-------I
1.00E-13
I--~
-=t:t:.~t
'i'1.00E-14
'3o
aIo
:::!.1.00E-15
1.00E-16
1.00E-17
1.00E-18
--
NCO....
,":>0'f
NCO~
,":>0'f
NCO~
,":>0'f
N~
,":>0'f
NCO'?>
,":>0'f
N'?>....
,":>0'f
N'?>~
,":>0"Y
N'?>~
,":>0'f
N'?>1.
,":>0"Y
N'?>'?>
,":>0"Y
N~""
,":>0"Y
N~~
,":>0'f
N~~
,":>0'f
N~1.
,":>0'f
I -+-U-Nat -+-Th-230 -4-Ra-226 -+-Pb-210 I
Effluent Concentration Limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit =5E-12uCi/ml
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
BHV-5 Uranium Natural Concentrations (uCi/ml)
1.00E-11
1.00E-12 ·.==::::-.===:::::-.:o=:==.:cc:-::==-==o-:::-.:..-::-.=-.,..-==-=---=-.:::=.:::-..:::::=:=::::::..-::-.::::::=::=::::::=:::::=====t-=::=:::::-:.::.:::::::::::c:c:c.::-:-..:::-:=-=::o:==:=.::::::::::::..=::::c:::-:::..::::::::::::::::::-..::::::::::::::::::.:::::=,...:::::::::::=.-:-..:::-:::==-::-.:::.::..-:::::::::-c===:=
.~.--H·'::'-~-~~~.~::~===-=-=-~~~~=9
:PIF;F----~-I'·--"'l·ro::-.::::'-=:=-~·__·_·_-:::..----
...._--_._..._..._---_.__..._.__.._.---_..._.__.._..._...-
---------
=.__=_.=._._..=.._=_=._-==-_.._:::::::::::=-==.:::::::::::::.:..=::.====_::::::::::-=._~_:====-=~~~~~~~
---~~~~~:~~--
1.00E-16
1.00E-13
.1.00E-14
'iiu(I)
CI.3-1.00E-15
1.00E-17
','__.',••-".._••._..._.'..._--v'.~_._......--••--.--__••--"'-'.-'-"-------.-_•.••_._.--",,--,-.-.,-._•••_-'._--..••__..,._---••__••_..'--'.--
_.'._.,,-.-.-....------••__---.-.--•.----,--....-_---•..,-_'-'_-_...'__•__-•.-.~•.•._--_-.••.'._._..__"'.-_.'__-.--.~--••------.-'----.-_••.-"-'-...J'-'._.__._-----_-..-•.-.----.--.-----.....-_--.--.--.-.---.-.......•....·,·······.·-r··_······-·-···-.·..•.....,,......,,,,- -.-- --.--.-.-.-..-····r.-_.••••••..-...•..--••..-••..--.-.-j
1.00E-18
!b"!b'l"!b"':J ~!b<O Cbfo ~!b'O !be>.,g,~g,"g,'l"g,"':J ~g,<O g,fo ~g,'o g,e>.,~~~"~'l"~"':J ~~<o ~fo &-~~~~~~~~~~~~~~~~~~~~~~~~~~~
Effluent Concentration Limit =2E-14 uCi/ml
ALARA Goal =5E-13 uCi/ml
Pre 1994 MPC Limit =8E-14uCi/ml
Pre 1994 ALARA Goal =2E-14 uCi/ml
BHV-5 Thorium-230 Concentrations (mCi/ml)
1.00E-11 1====---.
1.00E-12 _.__._._.__._,..__..__._....."_,._._._..__.___.__.__._.HH .._..___•••____•___••••••__•__•••_.._.._.••••••__•••___••_••••H •__.__._.__•__•__••__._'._•••••••_._.••_
,------..-.----..--.--.----..-.-.I
1.00E-13
1-..--\-._.
\
_._._-----_.__._-_._._._._-_..__._---1-1-------_._..__._.-..-.----..-.---..-.--.---------..---..-..---.-..-..-.·---·-----·-------"-·----··----·-··------·1
----.-.-.-----.-.-.--.---..--.--.-=n:....-.--..----.------.-..-.-.-g-..-.--...---.--.---.--.-----..-.---.-----.-.--.-._--~~:~~-:=~~~~==:~~:::.=~~~~~~~~:=:==:~~~~~~~~~==~~~tl~~~~~~~~~~~~~~~~~~~~~~-i:.~-::=::====:::=::~~===:~====::==:~====:=:===:==::.==-==:-:~=:======:1--------.--.----------------..-.----1-.---..----.---------.--------.--.---.--------.-------------.-.--
.1.00E-14
'fi(I)ga
d.1.00E-15
r'----\:-~~----;&-
~
_.
-
.-::7\---------,1
..._---.
..---------- I •"1 _....
I-::"--t-~--1jIII!!I!I
-I-.---~---.---.-----iTf==-If-\--+h---------------------i:t\=i::T-J.-.,,-
==-=:::..::!!!:
V~
~~1.00E-16
1-.----.----.-------..---.-.---.---.---..-..-------.--.-.-.---.---------.-.---..---..----.-.-.----..----..---~.-..---.-.-.----.--..---.-.--_--..V-..---..----~-.--.---.-lI-.-..--.---.-..-~
1.00E-17 I--.•_--_._---_._-_.._._-~_.•..:===-----=---=-=:=::=::===--=====:..-=..:=::::::::::::-..:::::::::::=:.:=:::::::::--=::=::::=::::=:=.:::-~=:::::::::-:..:..._:::::==-.=.-..::=::::::===:-======::=:-_-:=:.-::==:-..:..:::::::==::=-====:.=.::......___'_'H'_'_
1.00E-18
!O'"!Ofl,.Cb";)~!O<';'!Oro ~!O'O !OQ,9)~9)'"9)fl,.9)";)~9)<';'9)ro ~9)'0 9)Q,~~~'"~fl,.~";)~~<,;,~ro ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1.00E-11
1.00E-12
Effluent Concentration Limit =9E-13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
~-:._-
BHV-5 Radium-226 Concentrations (uci/ml)
\
----
'-·------------------·----------..----------4-----._-I
I--------------~--·----~---M------·-------------__rr.---·-.-..-.-.--..-.-..-..-..--..-..---...--------.-.--------R------.-
l~~·~-~~-~-~=-=-----~=-.-=-~=¥=========-=-----~==--===~-=~._-,
--~~-----._----.--..._...._--_..-
1.00E-13
.1.00E-14
iiiut/)
J-1.00E-15
1.00E-16
t===-
F~-='.-.-.-'
-----1-===;1::-
r==-~fE:lt:~::::::::::~.:::~---±.::-.:::~=--¥
I-~------.__.._
-f-=--==:_~lff='f-_-L:'=~3
--a---
1---
._----
--
1.00E-17 --
---------_._------------------------------,..__._-_._,-----_..._._------._--
1.00E-18
~"~C),~":J ~~<o ~ro ~~ro ~O;~c:::>~"~C),~":J ~~<o ~ro ~~ro ~O;~c:::>~"~C),~":J ~~<o ~ro ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1.00E-11
1.00E-12
1.00E-13
Effluent Concentration Limit =6E-13 uCilml
ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =4E-12 uCilml
Pre 1994 ALARA Goal =1E-12 uCi/ml
-....._._..__.
BHV-5 Lead-210 Concentrations (uCi/ml)
,
--
=-..l
i:==,=---==:===.::::t::t="~=--='C====-':::=::'-=-.:::::'7:::::=::=':::::==:=.:::"='::==.:.==1:'__:1__..:::==::-=0.::::=::::::=_,'-.__.____._.___._.
.1.00E-14
iiu
(I)
m.9-1.00E-15
f--
~.::::,..
-~---"'-.---.._.Y-.-t-+-f..fro.
~
_._~
---·---------·-It-----------·-··----·---···---···-·--·----------t--~-------------..-------l
1.00E-16 ~==----------------------___.__._-__._.--
._-
1.00E-17 .__._._._._.._._._._.___..___.__--_.._..-._.___._-_._._._-_...._____._._--_.._-_._._-_._.._--___.__.__-_.._._-__.____-_-__.._-__.-_.._--
1.00E-18
~~~#~~~~~~~~~#~~~~~~~~~~~~~###########################
URANIUM NAT THORIUM-230 RADIUM-226 LEAD -210
PERIOD GROSS LLD 0/0 GROSS COUNTING LLD %GROSS COUNTING LLD %GROSS COUNTING LLD %
ENDiNG CONC.uCifee lE-16 MPC CONC Ci/ee ERROR lE-16 MPC CONC Cifee ERROR lE-16 MPC CONC Cilec ERROR lE-16 MPC
28-Sep-81 2.44E-15 lE-16 4.88E-02 1.53E-15 4.11E-16 1E-16 5.10E-Ol 7.54E-16 4.31E-16 lE-16 3,77E.Q2 169E-14 2.57E-15 2E-15 211E-Ol
14-0ec-81 4.84E-15 lE-16 9.68E-02 2,78E-15 3.56E-16 lE-16 9.27E-Ol 1.84E-15 2.84E-16 lE-16 9.20E-C2 1.53E-14 2.28E-15 2E-15 1.91E-01
29-Mar-82 1.04E-15 9E-16 2.08E-02 2.62E-15 9.49E-16 3E-15 8.73E-01 1.11E-15 4.82E-16 4E-15 5.55E-C2 2,98E-14 8.16E-15 2E-14 3,73E-01
30-Jun-82 3.61E-15 5E-17 7.22E-02 7.61E-15 9.40E-16 7E-17 2.54E+00 1,39E-15 219E-16 2E-16 6,95E-02 1.80E-15 1.89E-15 2E-15 2.25E-02
27-S6p-82 1,71E-14 lE-16 3.42E-Ol 9,46E-15 6.02E-16 lE-16 3.15E+00 3.80E-15 4.68E-16 lE-16 190E-01 2.35E-14 4.65E-15 2E-15 2.94E-Ol
3.Jan-83 1.90E-14 5E-17 3.80E-01 5.77E-15 1,99E-16 3E-17 1.92E+00 9.34E-17 3.10E-16 6E-17 4.67E-03 4,32E-14 2.80E-15 2E-15 5.40E-Ol
4-Apr-83 LostmLab 2.33E-15 1.00E-16 2E-17 7,77E-01 5.93E-16 1.08E-16 9E-17 2,97E-02 3.01E-14 1,40E-15 9E-16 3.76E-01
30-Jun-83 7.62E-16 5E-17 1.52E-02 3.25E-15 1.70E-16 6E-17 1.08E+-OO 6.28E-15 3.59E-16 lE-16 3,14E.{)'i 2.69E-14 1.00E-15 lE-15 3.36E-01
3-0ct-83 4.86E-16 lE-16 9.72E-03 1.10E-15 3.09E-16 1E-16 3.67E-Ol 3.63E-16 1.08E-16 lE-16 182E-02.2.08E-14 1.13E-15 9E-16 2.60E-01
3-Jan-84 6.96E-15 lE-16 1.39E-01 9.69E-16 9.66E-17 5E-17 3.23E-01 9.60E-16 6.53E-17 lE-16 4.80E-02 183E-14 2,92E-15 2E-15 2.29E-Ol
2-Apr-84 1.64E-15 5E-17 3.28E-02 1.34E-15 1.20E-16 7E-17 4,47E-01 3.88E·15 2.29E-16 5E-17 1.94E-0'"4.67E-14 2.10E-Ol lE-15 5.84E-Ol
2-Jul-84 112E-15 5E-17 2.24E-02 1,92E-15 1.69E-16 7E-17 6AOE-Ol 3.31E-15 2,70E-16 lE-16 1.6GE-C·]2.21E-14 1.20E-15 lE-16 2.76E-01
1-0e/-84 1.11E-15 5E-17 2.22E-02 3.13E-16 1,26E-16 5E-17 1.04E·Ol 4.21E-16 1.34E-16 lE-16 211E-02 1-57E-14 1.39E-15 lE-15 1.96E-Ol
2-Jan-85 7.32E-16 6E-16 1A6E-02 6.71E-16 166E·16 5E-17 2.24E-Ol 4.94E-16 1,35E-16 1E-16 2A7E-C2 2.42E-14 1.26E-15 9E-16 3.03E-Ol
1-Apr-85 2.36E-16 5E·17 4.72E-03 5,43E-16 2.18E-16 lE-16 1,81E-01 Z.71E-16 9.00E-17 7E-17 136E-02 1-25E-14 1.02E-15 8E-16 1.56E-Ol
1-Ju!-85 7.58E-16 5E-17 1,52E-02 4.00E-16 9.43E-16 5E-16 133E-01 6.90E-16 1.50E-1G 9E-17 3A5E-GZ 2.15E-14 1.42E-15 9E-16 2.69E-01
30-Sep-85 7,47E-15 7E-16 lA9E-Ol 1.16E-15 1.42E-16 8E-17 3.87E-Ol 2.19E-15 2.21E-15 lE-16 1.lOE-01 9.20E-15 1.11E-15 lE-15 1.15E-01
2.Jan-86 1.75E-14 6E-16 3.50E-01 7.24E-15 2.20E-15 lE-15 2A1E+00 3,83E-15 3.83E-15 lE-16 1.92E-C·(113E-16 1.00E-15 1E-15 1.41E-03
1-Apr-86 2.99E-14 2E-18 5.98E-Ol 7.64E-15 6.30E-17 4E-18 2.55E+00 1,51E-14 5.02E-16 4E-18 757E-(;1 2.22E-14 5.04E-16 9E-17 2.78E-01
30-Jun-86 2,23E-14 lE·17 4.47E-Ol 5,19E-15 3.30E-16 2E-17 1.73E+00 1.05E-14 1.00E-16 4E-18 5.24E-O·i 2.16E-14 2.00E-15 2E-15 2.70E-01
27-0el-86 2.33E-14 lE-18 4.66E-01 7.78E·15 3.00E-16 2E-18 2.59E+00 1.60E-14 1,00E-15 1E-18 8.00E-Gel 2.02E-14 2.00E-16 3E-18 2.53E-Ol
15-Dec-86 3.40E-14 3E-17 6.80E-Ol 5.35E-15 2,00E-16 2E-17 1,78E+00 1.47E-14 5.00E-16 4E-17 735E-O~2.82E-14 2.00E-16 3E-17 3.53E-01
16-Mar-87 2,06E-14 3E-18 4.12E-Ol 4.50E-15 3.00E-16 5E-18 150E+00 6.74E-15 2,00E-16 4E-18 3.37E-(t1 729E-14 1.00E-15 7E-18 9.11E-01
l1-May-87 2.50E-14 5E-18 5.00E-01 8.54E-15 2.00E-16 5E-18 2.85E+00 8.15E-15 3.00E-16 5E-18 4.08E-m 3.28E-14 2.00E-16 2E-17 4.10E-Ol
9-S6p-87 2.65E-14 5E-18 5.30E-01 6.62E-15 3.00E-16 7E-17 2.21E+00 9-34E-15 3.00E-16 2E-17 4.67E-0;2,77E-14 4.00E-16 lE-16 3.46E-Ol
2-Nov-87 1.80E-14 4E-18 3.60E-Ol 7,09E-15 3,00E-16 4E-18 2.36E+00 7,20E-15 3.00E-16 4E-18 3.60E-Q~1.77E-14 5.00E-16 2E-17 2.21E-Ol
16-Feb-88 1.01E-14 5E-18 2,02E-Ol 2,98E-15 1.00E-16 2E-17 9.93E·01 3.93E-15 1,00E-16 2E-17 197E-o,3.36E-14 2.00E-16 5E-17 4.20E-Ol
18-May-88 1.78E-14 3E-18 3.56E-01 8.14E-15 3.00E-16 2E-17 2.71E+00 7.43E-15 3.00E-16 2E-17 3,72E-Oi 2.12E-14 2.00E-16 4E-17 2,65E-Ol
15-Aug-88 1.79E-14 3E-18 3.58E-Ol 1.49E-14 1.00E-15 lE-17 4.97E+00 5.34E-15 2.00E-16 2E-17 2.67E-01 2.45E-14 3.00E-16 2E-17 3.06E-Ol
14-Nov-88 4,46E-14 3E-18 8.92E-Ol 1,39E-14 2,00E-16 lE-17 4.63E+00 1.17E-14 2.00E-16 lE-17 5.85E-01 3,43E-14 2.00E-16 3E-17 4.29E-Ol
13-Feb·89 1.67E-14 4E-17 3.34E-01 5,54E-15 1.02E-16 lE-16 lB5E+00 7.20E-15 1.40E-16 2E-16 3,60E-01 5.02E-14 210E-16 5E-16 G,28E-Ol
15-May·89 2.03E-14 lE-18 4.06E-Ol 705E-15 2.00E·16 6E-17 2.35E+00 9.56E-16 2.00E-16 6E-18 4.78E-02 1.43E-14 1,00E-16 3E-17 1.79E-Ol
14-Aug-89 2.81E-15 2E-18 5.62E-02 3.78E-15 200E-16 8E-18 126E+00 9.26E-15 3.00E-16 8E-18 4,63E-0~1.50E-14 1.00E-16 4E-17 1.88E-Ol
13-Nov-89 5.38E-14 2E-17 1.08E+00 8.01E-15 3.00E-16 3E-18 2.67E+00 1.81E-14 3.00E-16 7E-18 9.06E-01 4.09E-14 5.00E-16 2E-17 5.12E-Ol
12-Feb-90 448E-14 3E-18 8.96E-01 1.48E-14 1.00E-15 6E·18 4.93E+00 1.28E-14 2.00E-17 2E-17 6,40E-01 3.88E-14 3.00E-16 5E-17 4.85E-Ol
14-May-90 218E-14 lE-16 4.36E-01 1.70E-14 1,00E-15 1E-16 5.67E+00 1.59E-14 1,00E-15 lE-16 795E-a1 3.49E-14 1,00E-15 2E-16 4.36E-Ol
13-Aug-90 9.53E-15 lE-16 1.91E-Ol 1.70E-14 100E-15 1E-16 5.67E+00 3.27E-15 1.10E-16 lE-16 1.64E-01 1,27E-14 2.00E-16 2E-16 1.59E-Ol
12-Nov-90 l11E-14 lE-16 2.22E-Ol 5.27E-15 3,00E-14 lE-16 1.76E+00 5.38E-15 3.00E-16 lE-16 2,69E-Cl 1.56E-14 4.00E-16 2E-16 1,95E-Ol
l1-Feb-91 6.35E-16 lE-16 1.27E-02 3.13E-16 6.00E-17 lE-16 1.04E-01 2.31E-16 4.00E-17 lE-16 1.16E-02 3.89E-14 1,00E-15 2E-16 4.86E-Ol
13-May-91 1.22E-15 lE-16 2.44E-02 6.14E-15 3.00E-16 lE·16 2,05E+00 4.41E-15 2.00E-16 lE-16 2.21E-01 2.50E-14 1.00E-15 2E-15 3.13E-01
12-Aug-91 7.84E-16 lE-16 1,57E-02 1.43E-15 200E-16 lE-16 4.77E-Ol 4.47E-16 1.10E-16 lE-16 2.24E-02 1.84E-14 4.00E·16 2E-15 2.30E-01
l1-Nov-91 5,37E-16 lE·16 1.07E-02 420E-16 700E-17 2E-17 140E-Ol 1,37E-16 3,00E-17 2E-17 6.85E-03 1.27E-14 3.00E-16 lE-16 1,59E-01
10-Feb-92 3.54E-16 lE-16 7.08E-03 1,18E-16 6.00E-17 2E-17 3.93E-02 4.08E-17 3.00E-17 2E-17 2.04E-03 3.69E-14 6.00E-17 lE-16 4,61E-Ol
l1-May-92 4.71E-16 lE-16 9.42E-03 9.58E-16 1.00E-16 2E-19 3.19E-Ol 8.31E-17 4,00E-18 2E-19 4.16E-03 1,43E-14 2.00E-16 lE·18 1.79E-Ol
1O-Aug-92 5.32E-15 2E-18 1.06E-Ol 3.36E-16 6,00E-17 4E-18 112E-01 1.65E-16 7.00E-17 2E-18 8.25E-03 1.59E-14 2.00E-16 2E-17 1.99E-01
9-Nov-92 3.66E-16 3E-21 7.32E-03 2.25E-16 4.00E-17 4E-18 7,50E-02 1,08E-16 3.00E-17 3E-18 5.40E-03 2.24E-14 2.00E-16 2E·17 2.80E-Ol
9-Feb-93 2.05E-16 lE-22 4.lOE-03 9.14E-17 8.00E-17 4E-18 3,05E-02 6.31E-17 5.00E-17 3E-18 3.16E-Q3 3.41E-14 500E-16 2E-17 4,26E-Ol
10-May-93 4.80E-16 3E-22 9.60E-03 8.25E-16 1,20E-16 4E-18 2.75E-Ol 126E-15 1,00E-16 3E-18 6.30E-02 1,83E-14 4.00E-16 2E-17 2.29E-Ol
10-Au9-93 8.30E-16 2E·18 1,66E-02 1,90E-16 700E-17 4E-18 6.33E-02 21OE-16 9.00E-17 3E-18 105E-02 UOE-14 5.00E-16 2E~17 2.13E-01
8-Nov-93 2.70E-16 2E-18 540E-03 8.00E-17 800E-17 4E-18 2.67E-02 7.00E-17 1.70E-16 3E-18 3,50E-03 2.34E-14 3.00E-16 2E·17 2.93E-Ol
7-Feb-94 318E-16 2E-16 5.30E-01 O.OOE+OO 5.90E-17 4E-18 O.OOE+OO 5.18E-16 2.80E-16 3E-18 5.76E-02 3,64E-14 7.00E-16 2E-17 6.07E+00
9-May-94 1,80E-15 2E-17 3.00E+00 9.78E-16 2.00E-16 4E-17 3.26E+00 1.10E-15 2.00E-16 3E-17 122E-01 8.30E-15 2.00E-16 2E-16 138E+00
9-Au9-94 2,67E-15 lE-16 4,45E+00 1,11E-15 1.70E-16 1E-16 370E+00 4.95E-16 3,87E-17 lE-16 5.50E<>2 O.OOE+OO 219E-16 lE-16 O.OOE+OO
7-Nov-94 9.21E-17 lE-16 1.54E-01 1,59E-15 8.80E-17 lE-16 5.30E+00 1.66E-15 5.70E-17 lE-16 184E-01 O.OOE+OO 1.88E-15 lE-15 O.OOE+OO
7-Feb·95 1,51E-15 lE-16 2.52E+00 9.50E-16 9.29E-16 lE-16 3,17E+00 9.70E-17 6.66E-17 lE-16 108E-02 9.35E-15 4.00E-16 lE-15 156E+00
9-May-95 2.21E-16 lE-16 3,68E-Ol 8.56E-16 5.41E-17 lE-16 2.85E+OO 3.06E-15 949E-17 lE-16 3.40E-(;1 4,34E-15 2.06E-16 lE-15 723E-Ol
9-Aug-95 166E·16 lE-16 2.77E-Ol 1.67E-15 129E-16 lE-16 5.57E+00 3.90E-15 1.34E-16 lE-16 4,33E-Ol 5.60E-15 1,29E-16 2E-15 9.33E-Ol
l1-Nov-95 2.04E-14 lE-16 3,40E+01 6,70E-15 2.32E-16 2E-16 2,23E+Ol 7.65E-15 1,24E-16 2E-16 8.50E<:1 4,47E-15 2.25E-16 lE-15 7.45E-01
5-Feb-96 4.50E-14 lE-16 7,50E+Ol 3.58E-14 9.47E-17 lE-16 119E+02 2,39E-14 3.38E-16 lE-16 2.66E+{)0 730E-15 3.87E-16 1E-16 1,22E+00
6-May-96 176E-15 1E-16 2.93E+00 3.57E-15 2.84E-16 lE-16 119E+Ol 9.55E-16 2.54E-17 lE-16 106E-(11 754E-15 5.83E-16 lE-16 1,26E+00
5-Au9-96 2.37E-15 1E-16 3,95E+00 8,18E-15 4.61E-16 lE-16 2.73E+Ol 7,46E-16 5.12E-17 lE-16 8,29E-02 575E-15 3,04E-16 lE-16 9,S8E-01
6-Nov-96 3.53E-15 lE-16 5.88E+00 5.31E-15 1,97E·16 1E-16 1,77E+Ol 9.39E-16 5.91E-17 1E-16 104E-(!1 121E-14 5,32E-16 lE-16 2,02E+00
6-Feb·97 1.84E-16 1E-16 3.07E-Ol 2.01E-16 2.87E-17 lE-16 6,70E-01 1,87E-16 1,81E-17 lE-16 2.08E-02 6,14E-15 2.92E-16 1E-16 1.02E+00
5·May-97 5.75E-16 1E-16 9.S8E-01 7.24E-16 6.36E-17 lE-16 2.<11E+00 6.07E-16 4.85E-17 lE-16 6,74E-D2 4.75E-15 2.84E-16 lE-16 792E-01
l1-Aug-97 121E-15 1E-16 2,02E+00 7,39E-16 5.50E-17 lE-16 2.46E+00 5.05E-16 4,30E-17 lE-16 5.61E-v2 4.92E-15 2.80E-16 lE-16 8.20E-01
5-Jan-98 9.89E-16 lE-16 165E+00 1.92E-15 NfA lE-16 6,40E+00 6.21E-16 NfA lE-16 6.90E-02 4.68E-15 NfA lE-16 780E-Ol
28-Apr-98 2,84E-15 lE-16 4.73E+00 2.38E-15 770E-17 lE-16 7.93E+00 1.72E-15 8.58E·17 1E-16 1.91E-01 7.35£-15 3,47E-16 lE-16 1.23E+00
31-Jui-98 7.49E-16 lE-16 8.32E-Ol 1,49E-15 713E-17 lE-16 4.97E+00 8,34E-16 5.97E-17 lE-16 927E-02 701E-15 4.03E-16 lE-16 117E+00
28-Sep-98 1,07E-15 lE-16 1.19E+00 9.20E-16 5.66E-17 lE-16 307E+00 6.32E-16 4.91E-17 lE-16 703E-02 3.95E-15 2,04E-16 lE-16 6.59E-Ol
28-Dec-98 8,51E-15 lE-16 9.46E+00 4.58E-15 1,14E-16 lE-16 1.53E+01 4.58E-15 1,32E-16 lE-16 5.08E-01 1.43E-14 3,19E-16 lE-16 2.39E+00
29-Mar-99 3.75E-15 IE-16 4.16E-16 2.45E-15 8.25E-17 lE-16 8.17E+00 2.39E-15 9.45E-17 lE-16 2.66E<.n 8.46E-15 3.29E-16 lE-16 1.41E+00
3-Jul-99 1,53E-15 lE-16 1.70E+00 8.65E-16 4.46E-17 lE-16 2.88E+00 6,52E-16 4.61E-17 lE-16 724E-02 7.20E-15 3.26E-16 lE-16 1,20E+00
27-S6p-99 5.83E-15 lE-16 6.48E+00 3.52E-15 118E-16 lE-16 117E+Ol 2.55E-15 8,95E-17 lE-16 2,83E-Ol 8.22E·15 3,16E-16 lE-16 1,37E+00
28-Dee-99 948E-15 lE-16 1.05E+Ol 6.20E-15 1.96E-16 lE-16 2.07E+Ol 3.96E·15 1.15E-16 lE-16 4.40E-Ol 7,56E-15 3.12E-16 1£-16 1,26E+00
27-Mar-00 2.06E-15 lE-16 2,29E+00 127E-15 6,74E-17 lE-16 4.25E+00 1,09E-15 5.86£·17 lE-16 121E-61 772E~15 3.24E-16 lE-16 1.29E+00
26-Jun-00 150E-15 lE-16 1.67E+00 1,24E-15 6.61E-17 1E-16 4.13E+00 1,01E-15 6,29E-17 tE-16 1.12E-01 4.36E-15 2.55E-16 lE-16 7,27E-Ol
26·Sep·00 1.04E-15 1E-16 1,15E+00 5.45E-16 6.15E-17 lE-16 182E+00 6.01E-16 7,62E-17 lE-16 6.67E-02 767E-15 4,45E-16 lE-16 1,28E+00
26-0ec-00 1.48E-15 lE~16 1.64E+00 7.56£-16 7.78E-17 lE-16 2,52E+00 6.84E-16 778E-17 lE-16 7ME-Q2 700E-15 4.28E-16 lE-16 1,17£+00
26-Mar-Ol 4.27E-16 lE-16 4.75E-Ol 219E-16 4.27E-17 1E-16 7.32E-Ol 189E-16 2.44E-17 lE-16 210E-{)2 6.13E-15 7.50E-16 lE-16 1.02E+00
2-Jul-Ol 4.52E-16 lE-16 5.02E-Ol 4,02E-16 5.90E-17 lE-16 1,34E+00 <1,00E-16 NfA lE-16 <1.11E··02 7.48E-15 2.57£-16 1E-16 1.25E+00
24-Sep-Ol 4.65E-16 1E-16 5.16E-Ol 2.06E-16 1,44E-17 lE-16 6.88E-Ol 2.02E-16 3.75E-17 lE-16 2,42E~02 6.98E-15 1,59E-16 lE-16 116E+OO
31·0ec-Ol 7.40E-16 lE-16 8.23E-01 3.51E-16 3,84E-17 lE-16 117E+-OO 3.64E-16 3.41E-17 1E-16 4.04E-·£)2 4,72E-15 2,03E-16 lE-16 786E-01
1-Apr-02 1,26E-15 lE-16 1.40E+00 7,53E-16 6.07E-17 lE-16 2.51E+OO 719E-16 5.52E-17 lE-16 799E~~2 9.65E~15 1.72E-16 1E-16 1.61E+00
1-Jui-02 1.02E-15 lE-16 1-14E+00 1.03E-15 6.44E-17 lE-16 3.44E+00 3,39E-16 3.29E-17 lE-16 3,77E--Q2 720E-15 1.72E-16 lE·16 1.20E+00
30-Sep-02 5,82E-16 lE-16 6.46E-Ol 9.28E-16 5.73E-17 lE-16 3,09E+00 3.14E-16 158£-17 lE-16 3.48E-02 4.48E·15 1.00E-16 lE-16 7,47E-01
30-Dee-02 <:1.00E-16 lE-16 <:l,l1E-Ol 7,67E-16 5.00E-17 lE-16 2.56E+00 3.48E-16 4.03E-17 lE-16 426E--02 9.56E-15 163E-16 lE-16 1.59E+OO
31-Mar-03 113E-15 lE-16 1.26£+00 7.41E-16 5.38E-17 lE-16 2,47E+OO 4.41E-16 2.76E-17 lE-16 4.91E-02 6.68£-15 1.34E-16 lE-16 1,11E+00
30-Jun-03 4.35E-16 lE-16 4,84E-Ol 5.08E-16 4.15E-17 1E-16 1.69E+00 2.51E-16 2.58E-17 lE-16 2,39E-02 1.34E-15 8.D2E-17 1E-16 2,23E-Ol
29-Sep-03 1.51E-16 1E-16 167E-01 1.02E-16 1,82E-17 lE-16 3.41E-Ol <:1.00E-16 NfA lE-16 <1.11E..Q2 7.28E-15 1.85E-16 1E-16 1.21E+00
29-Dec-03 1,52E-16 lE-16 1.69E-01 1.54E-16 2,08E-17 lE-16 5.13E-01 1.51E-16 128E-17 lE-16 167E-{l2 7.02E-15 1.87E-16 lE-16 117E+OO
29-Mar-04 <:1.00E-16 lE-16 <:1.11E-Ol 1.12E-16 2.18E-17 lE-16 3,73E-Ol <1.00E-16 NfA lE-16 <:111E..02 8.82£-15 2.31E-16 2E-15 1.47£+00
27·Jun-04 118E-16 lE-16 1.31E-Ol 3.11E-16 2.79E-17 1E-16 1.04E+00 1,25E-16 2.37E-17 1E-16 139E-D2 2.47E-15 1.98E-16 2E-15 4.11£-01
27-Sep-04 116E-16 1E-16 1,28E-Ol 1.72E-16 2.12E-17 lE-16 5.74E-Ol 1.18E-16 2.48E-17 lE-16 132E-02 1 10E~14 3,10E-16 2E-15 1.83E+00
27-Dee-04 114E-16 lE-16 1.27E-Ol 1,06E-16 1.69E-17 lE-16 3.52E-Ol <:1.00E-16 NfA 1E-16 <:1,11E-·02 1.59E-14 2.lOE-16 2E-15 2.64E+00
28-Mar-05 <:1,OOE-16 lE-16 <1.11E-01 2,04E-16 3.19E-17 1E-16 6.80E-Ol 1,83E-16 3.03E-17 lE-16 2.04E-02 8.57E~15 1.64E-16 2E-15 1.43E+00
29-Jun-05 1.83E-16 lE-16 2,04E-Ol 381E-16 3.59E-17 1E-16 1,27E+00 3.09E-16 3.31E-17 1E-16 3.43E-02 1,06E-14 1.82E-16 2E-15 1.76E+00
26-Sep-05 2.87E-16 lE-16 3,19E-01 8.21E-16 7,29E-17 lE-16 2.74E+00 3.71E-14 4.30E-15 1E-16 4.13E+OO 6.28E-14 1.08E-15 2E-15 1.05E+00
3-Jan-06 8.74E-16 lE-16 9.71E-01 3.79E-16 4.99E-17 lE-16 1.26E+00 1.31E-16 3,41E-17 lE-16 1A6E-02 4.32E-14 6.47E-16 EO 7.20E+00
3-Apr-06 5.22E-16 lE-16 5.80E-01 6.66E-16 3.69E-17 lE-16 1.22E+00 1,11E-16 2.79E-17 lE-16 1.24E-02 9.34E-15 2.42E-16 2E-15 1,56E+00
3-Jui-06 3,08E-16 lE-16 3.43E-Ol 110E-16 2.01E-17 lE-16 3.68E-Ol <1,00E-16 NfA lE-16 <:1,11E-02 1.25E~14 4.48E-16 2E-15 2.08E+00
02-0cl-06 9,14E-Hi lE-16 1.02E+00 4.95E-16 8.20E-17 lE-16 1.65E+00 1.86E·16 4.49E-17 1E-16 2,07E-02 1.67E-14 5.27E-16 2E-15 2.78E+00
01-Jan-07 949E-16-.1S.:..1L 1.05E+00 6.81E-16 1.02E-16 ~2.27E+00 2.02E-16 5.73E-17 lE·16 2.24E---o2 1.31E-14 5.16E-16 .......E:1L 2.18E+00
2-Apr-07 1.08E-15 lE-16 1,20E+00 8.22E-16 4.74E-17 lE-16 2.74E+OO 2.26E-16 2.89E-17 1E-16 2.51E-02 1.64E-14 2.27E-16 2E-15 2.70E+00
2-Jul-07 1.54E-15 1E-16 1.72E+00 8.16E-16 1,23E-16 lE-16 2.72E+00 4.76£-16 1.26E-16 lE-16 531E-02 2,12E-14 7.36E-16 ~3,53E+00
30-Sep-07 4.90E-16 ~5,44E-Ol 2.37E-16 4,20E-17 ~7,89E-Ol <lE-16 NA lE-16 <1,11E-021 6.65£-15 2.73E-16 2E-15 1.11
31-Dec-07 1.46E-15 lE-16 1,62 5.67E-16 7.28E-17 lE-16 1.89 <:lE-16 NA 1E-16 <1.11E-02 1.02E-14 2.87E·16 2E-15 17
31-Mar-08 3.16E·16 ~3.51E-Ol 6.17E-16 4.26E-17 ~2.06E+00 3.71E-16 3.67E-17 1£-16 4.11E·.t)2 4.82E-15 1.75£-16 ~8.03E-Ol
3O-Jun-08 3,13E-15 ~3,48E+00 1.55E-15 2.30E-16 lE-16 5.15E+00 9.27E-16 4.20E-17 lE-15 1,03E-ol 7.40E-15 2,73E-16 ~123E-tD0
30-Sep-08 7.08E-15 1E-16 7.86 3.41E-15 1-98E-17 ~1.14E-Ol 2.52E-15 8.43E-17 lE-16 2,80E-Ol 115E-14 2.56E-16 2E-15 1.92
31-Dec-08 7.22£-15 ~8.02E+00 2,82E-15 4.12E-16 ~9Al 3.03E-15 1.47£-17 1E-16 3.37E-Ol 1,59E-14 2.94E-16~2,65
Attachment B
ENERGYLABORATORIES,INC.•239J Sail CreekHighway(82801)'PoD.Box3258 •Casper,WY82602
Toll Free 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com..---------------~---------ANALYTICAL SUMMARY REPORT
December 05,2008
Denison Mines (USA)Corp
6425 SHwy 191
Blanding.UT 84511
Workorder No.:C06100264
Project Name:3rd Quarter Environmental Air
Energy laboratories,lnc.received the following 6 samples for Denison Mines (USA)Corp on 101712008 for analysis.
Sample 10 ClientSample 10 CollectDate Receive Date Matrix Test
C08100264-001 BHV-1
C08100264-002 BHV·2
C06100264-003 BHV-4
C08100264-004 BHV-5
C08100264-005 BHV-6
C08100264-006 Blank
07/0110800:00 10/07/08
07/01/0600:00 10/07/08
07/01/0800:00 10/07/06
07101/0800:00 10/07/08
07/01/0600:00 10/07/08
09/29/0600:00 10/07/08
Filter
Filter
Filter
Filter
Filter
Filter
Composite of two or more samples
Metals,Total
Digestion,Total Metals
Lead 210
Radium 226
Thorium,Isotopic
Same As Above
Same As Above
Same As Above
Same As Above
Same As Above
As appropriate,any exceptions or problems with the analyses are noted in the Laboratory Analytical Report.the
QA/QC Summary Report.or the Case Narrative.
If you have any questions regarding these tests results,please call.
ReportAPprOVedBY:~~
SIEV£CARlSTON
Summary Report:Page 1 of'
ENERGYLABORATORIES,INC.•2393Salt CreekHighway(82801)'p.o.Box 3258 •Casper,WV826'02
TollFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]'www.energylab.com...--------------------
;mG~VOLtJ~mAlRSAMPLING REPORT
DENISONMm/'ES
Decem!ler 5;2008
3rd,Quarter2008 ED-vironmentlllAir Sampiing
'BHV-l
QuarterlDate Sampled Air Concentration Error L.L.D.Effluent %EffluentRadionuclideEstimateCone.·Volume /lCi/mL /lCilmL /lCilmL I1CilmL Concentration
C08040302·00 I natU 1.14E-16 N/A 1.00E·16 9.00E-14 1.26E-OI
First Quarter 2008 230Th I.13E·16 2.63E-17 1.00E-16 3.00E-14 3.76E-Ol
Air Volume in mLs 22~<1.00E·16 N/A 1.00E-16 9.ooE-13 <I.1IE·02
1.36E+11 21'1'b 6.44E-15 3.81E-16 2.00E-15 6.00E-13 1.07E+00
QuarterlDate Sampled Air Concentration Error L.L.D.Effluent %EmuentRadionucJideEstimateCone.·Volume /lCi/mL I1Ci/mL IlCilmL I1Ci/mL Concentration
C080701l2-o01 natU 7.09E-16 N/A 1.00E·16 9.ooE-14 7.88E·OI
Second Quarter 2008 230Th 3.83E-16 1.03E·16 1.00E-16 3.00E-14 1.28E+OO
Air Volume in mLs 226Ra 2.27E·16 3.46E-17 1.00E-16 9.00E-13 2.53E-02
1.24E+11 2IOPb 6.52E-15 4.78E·16 2.00E-15 6.ooE·13 1.09E+OO
QuarterlDateSampled Air Concentration Error L.L.D.Effluent %EmuentRadionucJideEstimateCone!Volume pCi/mL /lei/mL /lCi/mL I1Ci/mL Concentration
C08100264·001 nalU 7.69E·16 N/A 1.00E-16 9.00E-14 8.54£·01
Third Quarter 2008 230Th 2.94E-16 2.22E-18 1.00E-16 3.00E-14 9.80E-01
Air Volume in mLs 22~a 1.90E-16 4.30E·17 l.ooE-16 9.00&13 2.11 E-02
1.36E+l1 ZI'1'b 7.64E-15 4.16E·16 2.ooE·15 6.00E-13 1.27E+OO
LLD's are from Regulatory Guide 4.14
•Effluent Concentration provided by Denison Mines
ENERGYLABORATORIES,INC••2393SaltCreekHighway(82801)'p.D.Box3258 •Casper.WY82(J{}2
lOllFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com.-----------------------
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample 10:
Denison Mines (USA)Corp
3rd Quarter Environmental Air
C081 00264-001
BHV-1
Report Date:12105/08
Collection Date:07/01/08
DateReceived:10/07/08
Matrix:Filter
----------------------------------------
Qualifiers RLAnalysesResultUnits
TRACE METALS
Uranium 0.155 mglfilter
Uranium,Activity 105 pCilFilter
RADIONUClIDES·TOTAL
Lead 210 1040 pCilFilter
Lead 210 precision (f)30 pCI/Filter
Lead 210MDC 30 pCilFmer
Radium 226 27.4 pCilFilter
Radium 226 precision (±)3.5 pCllFilter
Radium 226 MDC 2.4 pCilFilter
Thorium 230 40 pCilFilter
Thorium 230 precision (t)0.76 pCilFilter
o
o
0.0006
0.4
0.20
MCU
QCL Method
SW6020
SW6020
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
Analysis Date /By
11/0710814:13/ts
11/07/08 14:13/ts
11110108 10:451 dm
11/1010810:45/dm
11110108 10:45/dm
11/09108 14:00 I evm
11/09/08 14:00 f evm
11109108 14:00 f evm
11f03/08 15:451 dmf
11/03108 15:45 f dmf
Report
Definitions:
RL •Analy1e reporting limit.
aCL •Quafity control limit.
MDC •Minimum detectable concentration
MCl •Maximum contaminant level.
ND •Not detected atthe reporting limit.
D•RL increased due to sample matrix interference.
'!II.j~.~~ENERGYLABORATORIES,INC.•2393SaltCreek Highway(82601)•P.o.Box8258 •Casper,WY82602I~.iA."To/IFree 888.235.0515 •307.285.0515 •Fax [phone] •[e-mail]·www.energyiab.com
Rtd-UIU-kU"
QuarterlDateSampled Air Concentration Error L.L.D.Effluent %EffluentRadionuclideEstimateCone.·Volume /!Ci/mL /lCilmL ,.CilmL IlCilmL Concentration
C08040302-002 natv <1.00E-16 N/A 1.00E-16 9.00E-14 <1.llE-01
First Quarter 2008 230Th <1.00E-16 N/A l.ooE-16 3.00E-14 <3.33E-Ol
Air Volume inmL 226Ra <1.00E-16 N/A 1.00E-16 9.00E-13 <l.llE-02
1.37E+11 210pb 6.49£015 3.82E-16 2.00E-15 6.00E-13 1.08E+00
QuarterlDate Sampled Air Concentration Error L.L.D.Effluent %EffluentRadionuclideEstimateCone.·Volume /!Ci/mL uCi/mL 1!CilmL llCi/mL Concentration
C08070112-002 MtU 1.29E-16 N/A 1.00E-16 9.00E-14 1.43E-01
Second Quarter2008 230Th <1.00E-16 NlA 1.00E-16 3.00E-14 <3.33E-01
AirVolume inmL 226Ra <1.00E-16 N/A 1.00£016 9.ooE-13 <1.1IE-02
1.34E+11 2IOPb 4.82E-15 4.51E-16 2.00E-15 6.ooE-13 8.03E-Ol
QuarterlDate Sampled Air Concentration Error L.L.D.Effluent %EffluentRamonuclideEstimateCone.·Volume /!CilmL IlCi/mL f.lCi/mL ",CilmL Concentration
C08100264-002 natv 2.37E-16 N/A 1.00E-16 9.00E-14 2.63E-Ol
Third Quarter 2008 230Th <1.00E-16 N/A 1.00E-16 3.00E-14 <3.33E-Ol
Air Volume in mL 22~a <1.00E-16 N/A 1.00E-16 9.00E-13 <1.11E-02
1.25E+11 210Pb 8030E-15 4.15E-16 2.00E-15 6.00E-13 1.38E+OO
LLD's are from Regulatory Guide 4.14
•Effluent Concentration provided by Denison Mines
Ef\ERGY.ENERGYLABORATORIES,INC.•23fJ3 Salt Creek Highway (82601)'p.D.Box 3258 •Casper,WY82602
TollFree 888.235.0515 •307.235.0515 •Fax [phone] •casper@energy/ab.com·www.energylab.com
LASORATORY ANALYTICAL REPORT
Client:Denison Mines (USA)Corp
Project 3rd Quarter Environmental Air
Lab ID:C08100264-002
Client Sample ID:BHV-2
Report Date:12105/08
Collection Date:07101/08
DateReceived:10/07/08
Matrix:Filter
Qualifiers RLAnalysesResultUnits
TRACE METALS
Uranium 0.0445 mgJfilter
Uranium,Activity 30.1 pCi/Filter
RADIONUCLIDES -TOTAL
Lead 210 1040 pCilFilter
Lead 210 precision (±)30 pCI/Filter
Lead 210 MDC 30 pCilFilter
Radium 226 11.5 pCI/Filler
Radium 226 precision (±)2.6 pCi/Filler
Radium 226 MDC 2.6 pCi/Filter
Thorium 230 8.B pCI/Filter
Thorium 230 precision (t)0.38 pCi/Filter
o
D
0.0006
0.4
0.20
MCU
QCL Method
SW6020
SW6020
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
Analysis Date /By
11107/08 14:23/ts
11/07108 14:23/ts
11/10/0810:45/dm
11/10/08 10:45/dm
11/10/08 10:45/dm
11109108 14:00/evm
11/09/08 14:00/evm
11/09/08 14:00/evm
11103/08 15:45/dmf
11/03/0815:45/dmf
Report
Definitions:
RL -Anafyte reporting limit.
QCL·Quality control limit.
MDC •Minimum detectable concentration
MCL -Maximum contaminant level.
NO -Not detected at the reporting limit.
D·Rl increased due to sample matrix interference.
L.i'II}tFU ENERGYLABORATORIES,INC.·2393Salt CreekHighway(82601)'RD.Box 3258 •Casper,WY82802
______~~Toll Free 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.enfilrgylab.comI,ul·Jf,fi·#lli'
QuarterlDate Sampled Air Concentration Error LL.D.Effluent %EffluentRadionudideEstimateCone."Volume IlCL'mL IlCL'mL ~CilmL uCilmL Concentration
C08040302-003 Datu 1.25E-16 N/A 1.00E-16 9.00E-14 1.39E-Ol
First Quarter 2008 2~<1.ooE-16 N/A 1.00E-16 3.00E-14 <3.33E-Ol
Air Volume inmL 22~<1.ooE-16 N/A 1.00E-16 9.00E-13 <1.11E-02
1.36E+11 210Pb 4.09E-15 3.04E-16 2.00E-15 6.00E-13 6.81E-Ol
QuarterlDateSampled Air Concentration Error LL.D.Effluent %EfIluentRadionuclideEstimateCone."Volume /lCilmL /lCilmL p.CilmL /lCilmL Concentration
C08070112-003 Datu 1.28E·15 N/A 1.00E·16 9.00E-14 1.42E+OO
Second Quarter 2008 2lCTh 7.72E-I6 2.09E-16 1.00E-16 3.00E-14 2.57E+OO
AirVolumeinmL 226Ra 3.61E-16 4.30E-17 1.00E-16 9.00E·13 4.0lE-02
1.24E+11 210Pb 1.18E-14 5.73E-16 2.00E-15 6.00E·13 1.97E+oO
QuarterlDate Sampled Air Concentration Error LL.D.Effluent %EfIluentRadionuclideEstimateCODe."Volume IlCilmL JlCilmL ItCilmL JlCilmL Concentration
C08100264-003 natU 2.72E-15 N/A 1.00E·16 9.00E·14 302E+OO
Third Quarter 2008 230Th 1.27£.-15 1.39E-17 1.00E-16 3.00E·14 4.23E+OO
Air Volume in mL 226Ra 7.66E-16 8.18E-17 1.00E-16 9.00E-13 8.51E-02
1.36E+11 210Pb 1.10E-14 4.72E-16 2.00E·15 6.00E-13 1.83E+00
LLD'sarefromRegulatory Guide4.14
"EffluentConcentration provided by DeniSQD Mines
ENERGYLABORATORIES.INC••2393Salt CreekHighway(82601)'AD.Box8258 •Casper,WY82602
Toll Free 888.235.0515 •307.285.0515 •Fax [phone] •[e-mail]·www.energy/ab.com-----------------------------
LASORATORY ANALYTICAL REPORT
Client:
Project:
LabJD:
Client Sample 10:
Denison Mines (USA)Corp
3rd Quarter Environmental Air
C081 00264-003
BHV-4
Report Date:12105/08
Collection Date:07/01108
DateRecelved:10/07/08
Matrix:Filter
Qualifiers RLAnalysesResultUnits
TRACE METALS
Uranium 0.547 mg/filter
Uranium,Activity 371 pCilFilter
RADIONUCLIDES •TOTAL
Lead 210 1500 pCVFilter
lead 210 precision (t)34 pCilFilter
lead 210MOC 30 pCilFilter
Radium 226 106 pCilFilter
Radium 226 precision (t)6.3 pCilFilter
Radium 226 MDC 2.2 pCilFilter
Thorium 230 173 pCilFilter
Thorium 230 precision (i)1.6 pCVFilter
o
o
0.0006
0.4
0.20
MeL!
QCL Method
SW6020
SW6020
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
Analysis Date /By
11107/08 14:50 I ts
11107108 14:50I ts
11/10/08 10:45/dm
11/10/08 10:45/dm
11110/08 10:451 dm
11109/08 14:00 I evrn
11/09/08 14:00 I evrn
11109/08 14:00 I evrn
11103/08 15:451 dmf
11103108 15:451 dmf
Report
Definitions:
RL -Analyte reporting limit.
QCL -Quality control limit.
MDC •Minimum detectable concentration
MCl•Maximum contaminant level.
NO -Not detected at the reporting limit.
o-RL increased due to sample matrix interference.
Ef\ERGY ENERGYLABORATORIES.INC.•2393SaltCreekHighway(82801).p.D.Box3258 •Casper,WY82802
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Quarter/Date Sampled Air Concentration Error LLD.Effluent %EffluentRadionuclideEstimateCone."VollUlle IlCi/mL uCilmL IlCi/mL j1Ci/mL Concentration
C08040302-004 natU 3.16E-16 N/A 1.00E-16 9.00E-14 35lE-01
First Quarter 2008 23'1n 6.17E-16 4.26E-17 1.00E-16 3.00E-14 2.06E+00
Air Vo1wne inmL 22~3.70E-16 3.67E-17 1.00E-16 9.00E-13 4.11E-02
1.36E+11 21°Pb 4.82E-15 1.75E-16 2.00E-15 6.00E-13 8.03E-Ol
Quarter/Date Sampled Air Concentration Error LLD.Effluent %EfIluentRadionuclideEstimateCone."Volume IlCi/mL IlCi/mL llCi/mL JlCi/mL Concentration
C08070112-004 flAtu 3.13E-15 N/A 1.00E-16 9.00E-14 3.48E+OO
Second Quarter 2008 23'1fi 1.55E-15 2.30E-16 1.00E-16 3.00E-14 5.15E+OO
Air Volume in mL 226Ra 9.27E-16 4.20E-17 1.00E-16 9.00E-13 1.03£-01
1.33£+11 21°Pb 7.40E-15 2.73E-16 2.00E-15 6.00E-13 1.23E+OO
Quarter/Date Sampled Air Concentration Errol'LLD.Effluent %EffluentRadionuclideEstimateCone."Volume llCilmL IlCilmL Il-Ci/mL /lCilmL Concentration
C08100264-004 nalU 7.08E-15 N/A 1.00E-16 9.00E-14 7.86£+00
Third Quarter 2008 230Th 3.41E-15 1.98E-17 1.00E-16 3.00E-14 1.14E+Ol
Air Volwne in mL 226Ra 2.52E-15 8.43E-17 1.00E-16 9.00E-13 2.80E-01
1.36E+11 210pb 1.15E-14 2.56E-16 2.00E-15 6.00E-13 1.92E+OO
LLD's are from Regulatory Guide 4.14
•Emuent Concentration provided by Denison Mines
ENERGYLABORATORIES,INC.•2:J93Salt CreekHighway (82601)'P.O.Box3258 •Casper;WY82602
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'.wrn-UI"-tiP".,----------------------------
LASORATORY ANALYTICAL REPORT
Client:Denison Mines (USA)Corp
Project:3rd Quarter Environmental Air
Lab 10:C08100264-004
Client Sample 10:BHV-5
Report Date:12105/08
Collection Date:07/01/08
DateReceived:10/07/08
Matrix:Filler
Qualifiers RLAnalysesResultUnits
TRACE METALS
Uranium 1.43 mg/fiUer
Uranium,Activity 966 pCVFiller
RAOIONUCUOES •TOTAL
lead 210 1570 pei/Filter
lead 210 precision (±)35 pCVFilter
lead 210MDC 30 pCVFilter
Radium 226 346 pCVFilter
Radium 226 precision (±)11.5 pCVFiller
Radium 226 MDC 2.3 pCVFilter
Thorium 230 466 pCVFilter
Thorium 230 precision (±)2.7 pCVFiller
o
o
0.0006
0.4
0.20
MCU
QCL Method
SW6020
SW6020
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
Analysis Date I By
11107/08 15:09/ts
11107/08 15:09/ts
11/10/08 10:45/dm
11110/0810:45/dm
11/10/0810:451dm
11/09/08 14:00/evm
11/09/08 14:001evm
11/09/08 14:00/evm
11/03/08 15:45/dmf
11/03/08 15:451dmf
Report
Definitions:
RL -Analyte reporting limit.
QCl-Quality control limit.
MDC -Minimum detectable concentration
MCl-Maximum contaminant level.
NO •Not detected at the reporting limit.
o•Rl increased due to sample matrixinterference.
ENERGYLABORATORIES.INC••2393Sa/I CreekHighway(82601)'ROo Box 3258 •Casper,WY82602
TollFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.comIlL.------------------------
""
mGH VOLUME AIR SAMPLING REPORT
""
CLIENT:
REPORT DATE:
PROJECT:
SAMPLEID:
DENISON MINES
"De~ember 5,2008 "
"J.rdQullrter2008 EnvironmentalAirSampling
QuarterlDate Sampled Air Concentration Error L.L.D.Emuent %EmuentRadionuclideEstimateCone,"Volume /lCi/mL !lCi/mL /lCi/mL IlCi/mL Concentration
C08040302-005 DatU 4.34E-16 N/A 1.00E-16 9.00E-14 4.83E-01
First Quarter2008 2JOn 3.51E-16 3.38E-17 1.00E-16 3.00E-14 1.I7E+oO
Air Volume in mLs 226Ra <1.00E-16 N/A 1.00E·16 9.00E-13 <I.1IE-02
1.36E+1I 210Pb 5.99E-15 1.94E-16 2.00E-15 6.00E-13 9.98E-OI
QuarterlDate Sampled Air Concentration Error L.L.D.Effluent %EmuentRadionue1ideEstimateCone.'Volume JiCi/mL /lCi/mL JiCilmL !lCi/mL Concentration
C08070112-005 natU 1.88E-15 N/A 1.00E-16 9.00E-14 2.09E+OO
Second Quarter 2008 2JOTh 9.00E-16 1.43E·16 1.00&16 3.00E-14 3.00E+00
Air Volume in mL 226Ra 4.04E-16 2.85E-17 1.00E-16 9.00E·13 4.49E-02
1.33E+1I 210Pb 7AlE-15 2.73E·16 2.00E·15 6.00E-13 1.24E+00
QuarterlDate Sampled Air Concentration Error L.L.D.Emuent %EmuentRadionuclideEstimateCone.'Volume /lCi/mL Jl,Ci/mL /lCi/mL Jl,CilmL Concentration
C08100264-005 nalU 4.82E-15 N/A 1.00E-16 9.00E-14 5.35E+00
Third Quarter 2008 2JOTh 2.IOE-15 1.54E-17 1.00E-16 3.00E-14 6.99E+OO
AirVolumeinmLs 226Ra 1.27E-15 6.59E-17 1.00E·16 9.00E-13 1.4IE-Oi
1.36E+II 2lOPb I.OOE·14 2.42E·16 2.00E-15 6.00E-13 1.67E+OO
LLD's are from Regulatory Guide 4.14
,EmuentConcentration provided by Denison Mines
Ef\ERGY ENERGYLABORATORIES.INC.·2393Salt Creek Highway(82601)·p.D.Box3258 •Casper,WY82602
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LABORATORY ANALYTICAL REPORT
Client:Denison Mines (USA)Corp
Project:3rd Quarter Environmental Air
Lab ID:C08100264-005
Client Sample 10:BHV-6
Report Date:12105/08
Collection Date:07101/08
DateReceived:10107/08
Matrix:Filter
Qualifiers RLAnalysesResultUnits
TRACE METALS
Uranium 0.972 mg/filter
Uranium,Activity 658 pCilFilter
RADiONUCLIDES·TOTAL
lead 210 1370 pCi/Filter
lead 210 precision (±)33 pCilFilter
Lead 210 MOC 30 pCilFilter
Radium 226 175 pCilFilter
Radium 226 precision (±)9.0 pCilFilter
Radium 226 MOC 2.8 pCilFilter
Thorium 230 286 pCilFilter
Thorium 230 precision (±)2.1 pCilFilter
o
o
0.0006
0.4
0.20
MCU
QCL Method
SW6020
SW6020
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
Analysis Date 1By
11/07/08 15:30/ts
11/07/08 15:30 Its
11/10/08 10:45/dm
11/1010810:45/dm
11/10/08 10:451 dm
11109108 14:00I evm
11109108 14:00 I evm
11109/08 14:00 /evm
11/03108 15:45/dmf
11/03/08 15:45/dmf
Report
Definitions:
Rl •Analyte reporting limit.
QCl -Quality control limit.
MOC -Minimum detectable concentration
MCl -Maximum contaminant level.
NO •Not detected at the reporting limij.
o•Rlincreased due to sample matrix interference.
ENERGYLABORATORIE~INC••2893Salt Creek Highway(82801)'P.Oo Box3258 •Casper,WY82602
TollFree 888.235.0515 •307.285.0515 •Fax [phone] •[e-mail]·www.energylab.com••-------------------------
illGHVOLUME AIRSAMPLlNG.REPORT
CLIENT:
REPORT DATE:
PROJECT:
SAMPLEID:
DENISONMINES
December 5,2008
3rdQuarter2008 Environmentlll Air Sampling
BLANK
Quarter/Date Sampled Air Concentration Error L.L.D.Effluent %EffiuentRadionuclideEstimateCone."Volume /LCi/mL /lCi/IIlL /LCi/mL /lCilmL Concentration
C08040302·006 natV <1.00E·16 N/A 1.00E-16 9.00E·14 <I.1IE-OI
First Quarter 2008 23CTh <1.00E·16 N/A 1.00E-16 3.00E·14 <3.33E-01
Air Volume in mLs 216Ra <1.00E·16 N/A 1.00E·16 9.00E-13 <I.IIE·02
1.36E+11 2JOpb <2.00E-15 N/A 2.00E-15 6.00E-13 <3.33E-01
Air Volume forBlank assumed to be nommal of Samples;136,000,000 Liters.
Quarter/Date Sampled Air Concentration Error L.L.O.Effluent %EffluentRadionuclideEstimateCone."Volume /LCi/mL uCi/mL /LCl/mL uCi/mL Concentration
C08070112-006 n.tv <1.00E·16 N/A 1.00E·16 9.00E-14 <I.I1E-OI
Second Quarter 2008 230Th <1.00E·16 N/A 1.00E-16 3.00E·14 <3.33E-Ol
Air Volume in mLs 2~a <1.00E-16 N/A 1.00E-16 9.00E·13 <I.1IE-02
1.30E+I I 210Pb <2.00E·15 N/A 2.00E·15 6.00E·13 <3.33E-01
Air Volume for Blank assumed to be nommal ofSamples;130,000,000 Liters.
QuarterlDate Sampled Air Concentration Error L.L.D.Effluent %EffluentRadionuclideEstimateConc.*Volume IlCi/mL IlCi/mL /Lei/mL uCi/mL Concentration
C08100264-o06 natv 1.38E·16 N/A LODE-I6 9.00E·14 1.53E-01
Third Quarter 2008 Z30Th <1.00E·16 N/A 1.00E·16 3.00E·14 <3.33E·OI
Air Volume in mLs 21~<1.00E·16 N/A 1.00E-16 9.00E·13 <I.lIE-oZ
1.30E+11 210Pb <2.00E·15 N/A 2.00E·15 6.00£-13 <3.33E-01
Air Volume for Blankassumed to be nom mal ofSamples;130,000,000 Liters.
LLD's are from Regulatory Guide 4.14
"Effluent Concentration provided by Denison Mines
ENERGYLABORATORIES,INC.'2393SaltCreekHighway(82601)'P.O.Box3258 •Casper;WY82802
TollFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.comIAli.------------------------
lABORATORY ANALYTICAL REPORT
Client:Denison Mines (USA)Corp
Project:3rd Quarter Environmental Air
Lab 10:C08i00264-006
Client Sample 10:Blank
Report Date:12105/08
Collection Date:09129/08
OateReceived:10107/08
Matrix:Filter
Analyses Result Units Qualifiers RL
MCU
QCL Method Analysis Date I By
TRACE METALS
Uranium
Uranium.Activity
0.0270 mglfilter
18.3 pCilFilter
D
D
0.0006
0.4
SW6020
SW6020
11/07/0816:0211$
11107/0816:02115
RADIONUCLIDES •TOTAL
lead 210
lead 210 precision (±)
lead 210 MOe
Radium 226
Radium 226 precision (±)
Radium 226 MDC
Thorium 230
Thorium 230 precision (t)
1.2 pCilFiijer U
18 pCilFilter
30 pCilFilter
0.7 pCi/Filter U
1.6 pCilFilter
2.7 pCilFilter
0.67 pCilFiller 0.20
0.29 pCilFilter
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
11110/08 10:45/dm
11110/08 10:451 dm
11110108 10:451dm
11109108 14:00 Ievm
11109/08 14:00 Ievm
11109/08 14:001evm
11103/08 15:451dmf
11103108 15:451dmf
Report
Definitions:
Rl •Analyle reporting limit.
QCl-Quality control limit.
MDC -Minimum detectable concentration
U-Notdetected at minimum detectable concentration
MCL •Maximum contaminant level.
ND •Not detected at the reporting limit.
D-RL increased due to sample matrix interference.
EKRGY
't#fPJtIWrni'
ENERGYLASORA rORIE$,INC••2393SaltCreek Highway(82801)•AD.Box3258 •Casper.WY82602
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QA/QC Summary Report
Client:Denison Mines (USA)Corp
Project:3rd Quarter Environmental Air
Report Date:12105/08
Work Order:C08100264
Analyte Result Units RL %REC Low limit High Limit RPD RPDLimit Qual
Method:E903.0
Sample 10:C08100453-003FMS
Radium 226
Sample 10:C08100453-003FMSO
Radium 226
Sample 10:LC5-20334
Radium 226
Sample 10:MB·20334
Radium 226
Sample Matrix Spike
150 pCi/L
Sample Matrix Spike Duplicate
130 pCilL
Laboratory Control Sample
15 pCilL
Method Blank
·2 pCill
Run:BERTHOLD 770_081031B
105 70 130
Run:BERTHOLD 770_0810318
97 70 1~a9
Run:BERTHOLD 770_081031B
113 70 1~
Run:BERTHOLD 770_081031B
Batch:20334
11109/08 15:36
11/09/0815:36
25
11/09/0817:11
11/09/08 17:11
U
Method:E907.0
Sample 10:C08100631-001AMS
Thorium 230
Sample 10:C08100637-001AMSO
Thorium 230
Sample 10:LCS·20334
Thorium 230
Sample10:MB-20334
Thorium 230
Method:E909.0M
Sample 10:C08100264-003AMS
Lead 210
Sample 10:C08100264-OO3AMSO
Lead 210
Sample 10:MB·R111386
Lead 210
Sample Matrix Spike Run:EGG-QRTEC_081103A
86.7 pCilFmer 0.20 95 70 130
Sample Matrix Spike Duplicate Run:EGG-ORTEC_081103A
83.2 pCilFilter 0.20 89 70 130 4.1
Laboratory Control Sample Run:EGG-ORTEC_081103A
38.4 pCilFilter 0.20 85 70 130
Method Blank Run:EGG-ORTEC_081103A
·0.4 pCI/Filter
Sample Matrix Spike Run:PACKARD 3100TR_081110A
2540 pCilFilter 95 70 130
Sample Matrix Spike Duplicate Run:PACKARD 3100TR_081110A
2580 pCilFilter 98 70 130 1.3
Method Blank Run:PACKARD 3100TR_081110A
2 pCill
Batch:20334
11/03/08 15:45
11/03/08 15:45
30
11/03/08 15:45
11/03/08 15:45
U
Batch:20334
11/10/0810:45
11/10/0810:45
30
11/10/0810:45
U
Sample 10:LCS-R111386 laboratory Control Sample Run:PACKARD 31OOTR_08111 OA
Lead 210 57 pCi/l 49 70 130
-lCS response is outside oflheacceptance range forlhisanalysis.Since the MS and MSD pair are acceptablethe batch Is approved.
11/10/08 10:45
S
-----------------~---_._--_._------------------
Qualifiers:
Rl-Analyte reporting limit.
S•Spike recovery outside of advisory limits.
ND -Not detected at the reporting limit.
U-Not detected at minimum detectable concentration
QAlQC Summary Report
ENERGYLABORATORIES-INC••2393SaltCreekHighway(82801)'RD.Box3258 •Casper,WY82602
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Client:Denison Mines (USA)Corp
Project:3rd Quarter Environmental Air
Report Date:12105/08
Work Order:C08100264
Analyle Result Units RL %REC Low Limit High Limit RPO RPOLlmit Qual
Method:SW6020 Batch:20334
Sample 10:MB·20334 Method Blank Run:ICPMSZ-G_081107A 11/07/08 14:02
Uranium BE-05 mglfilter 6E..Q5
SampleJD:LCSi·20334 Laboratory Control Sample Run:ICPMS2-G_081107A 11/07/08 14:08
Uranium 0.0534 mglfilter 0.00030 107 75 125
Sample 10:C08i00460-o02FMS Sample Matrix Spike Run:ICPMS2-G_081107A 11/07/08 17:27
Uranium 0.0135 mglL 0.00030 99 75 125
Sample 10:C08i00460-o02FMSD Sample Matrix Spike Duplicate Run:ICPMS2-G_061107A 11/07/06 17:33
Uranium 0.0136 mglL 0.00030 100 75 125 0.8 20
Qualifiers:
RL •Analyte reporting limit.ND -Not detected at the reporting limit.
Page--I-of-l--Chain of Custody and Analytical Request Record1:t~:rlN3Y'eu4•11&U!JiUI.I .Compan~me:IYl 'Project Na~e,rWS",ermlt#,Etc.:~JI1
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Invoice Address:"r InvoiceiContact &Phone #:IPurchase Order #:ELI Quote #:
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1 ~~kJ -I -r1,o8 lOA /3-11 / / / /~
2 ~~~/...j1 /I t~~A / / / /!t\~\C'(wl~3::
~~I ~
4 ~f.W ...q / \15-1,/ /I /~
5..~~"'1<"'"I 13,f....I /II >-
6 I ~f ·V"(..,)I~·4 / / / /~
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8 ~
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Workorder Receipt Checklist
Denison Mines (USA)Corp
1111~1~~I~~il~llml~!
C081 00264
Login completed by:Kimberly Humiston
Reviewed by:
Reviewed Date:
Shipping container/cooler in good condition?Yes 0'
Custody seals intacton shipping container/cooler?Yes 0
Custody seals intact on sample bottles?Yes 0
Chain ofcustody present?Yes 0'
Chain ofcustodysigned when relinquished and received?Yes 0'
Chain ofcustody agrees with sample labels?Yes 0'
Samples in proper container/boltle?Yes 0'
Sample containers intact?Yes 0'
Sufficient samplevolume for indicated test?Yes 0'
All samples received within holding time?Yes 0
Containerrremp Blank temperature:N/A"e
Water -VOA vials have zero headspace?Yes 0
Water-pH acceptable upon receipt?Yes 0
Date and Time Received:1017120089:20 AM
Received by:ah
Carrier name:Next Day Air
No 0 Not Present 0
No 0 Not Present 0
No 0 Not Present 0
No 0
NoD
No 0
NoD
NoD
NoD
NoD
No 0 No VOAvials submitted 0
No 0 Not Applicable 0'
------..._-----...---_..__-----------...----------------..._------._----------_.--.._---------.----_...--------...--.--_..----------.-..------------_.._--_----..---..-.._------..------------------------__-----------_._--_-----------------__-----
Contactand Corrective Action Comments:
None
,.Sit••."..~ENERGYLABORATORIES,INC••2393Salt CreekHighway (82801)'AD.Box 3258 •Casper,WY82602,,"&'••~.TollFree888.235.0515 •301.235.0515 •Fax [phone] •[e-mail]'www.energyfab.com'bUt.tratl_trp,t
CLIENT:Denison Mines (USA)Corp
Project:3rd Quarter Environmental Air
Sample Delivery Group:C08100264
ORIGINAL SAMPLE SUBMITTAL(S)
All original sample submittals have been returned with the data package.
Date:05-Dec-08
CASE NARRATIVE
SAMPLE TEMPERATURE COMPLIANCE:4°C (±ZOC)
Temperature ofsamples received may not be considered properly preserved by accepted standards.Samples that are hand
delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun.
GROSS ALPHA ANALYSIS
Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters.Data provided by
this method for non potable waters should be viewed as inconsistent
RADON IN AIR ANALYSIS
The desired exposure time is 48 hours (2 days).The time delay in retuming the canister to the laboratory for processing
should be as short as possible to avoid excessive decay.Maximum recommended delay between end ofexposure to
beginning of counting should not exceed 8days.
SOIUSOLID SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZiNE,SIMAZINE AND PCB ANALYSIS USING EPA 505
Data for Atrazine and Simazine are reported from EPA 525.2,not from EPA 505.Data reported by ELI using EPA method
505 reflects the results for seven individual Aroclors.\Nhen the results for aU seven are ND (not detected),the sample
meets EPA compliance criteria for PCB monitoring.
SUBCONTRACTING ANALYSIS
Subcontracting of sample analyses to an outside laboratory may be required.If so,ENERGY LABORATORIES will utilize its
branch laboratories or qualified contract laboratories for this service.Any such laboratories will be indicated within the
Laboratory Analytical Report.
BRANCH LABORATORY LOCATIONS
eli-b -Energy Laboratories,Inc.-Billings,MT
eli-g -Energy Laboratories,Inc.-Gillette,'NY
eli-h -Energy Laboratories,Inc.-Helena,MT
eli-r -Energy Laboratories.Inc.-Rapid City,SD
eli-t-Energy Laboratories,Inc.-College Station,TX
CERTFICATIONS:
USEPA:'NY00002;FL-DOH NELAC:E87641;California:02118CA
Oregon:Wf200001;Utah:3072350515;Virginia:00057;Washington:C1903
ISO 17025 DISCLAIMER:
The results of this Analytical Report relate only to the items submitted for analysis.
ENERGY LABORATORIES,INC.-CASPER,Wf certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities.Some results requested by the client may not be covered
under these certifications.All analysis data to be submitted for regulatory enforcement should be certified in the sample
state of origin.Please verify ELI's certification coverage by visiting www.energylab.com
Ell appreciates the opportunity to provide you with this analytical service.For additional information and services visit our
web page www.energylab.com.
THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT
.,ENERGYLABORATORIES,INC.'2393SailCreekHighway (82601)•P.D.Box 3258 •Casper,WY82602/«;f(iG.TollFree 888.235.0515 •301.235.0515 •Fax [phone] •[e-mail]·www.energylab.com«,m·'£''''Ai/f'
ANALYTICAL SUMMARY REPORT
February 04.2009
Denison Mines (USA)Corp
6425 S Hwy 191
Blanding,UT 84511
Workorder No.:C09010163
Project Name:4th Quarter Air 2008
Energy laboratories,Inc.received the following 6 samples for Denison Mines (USA)Corp on 1n12009 for analysis.
Sample 10 Client Sample 10 Collect Date Receive Date Matrix Test
C09010163-001 BHV-1
C09010163-Q02 BHV-2
C09010163-D03 BHV-4
C09010163-004 BHV-5
C09010163-D05 BHV-6
C09010163-D06 Blank
01/05/0900:00 01107109
01f0510900:00 01/07/09
01/05/0900:00 01/07/09
01f05f0900:00 01/07/09
01f05f0900:00 01/07/09
01/05f09 00:00 01/07/09
Filter
Filter
Filter
Filter
Filter
Filter
Composite of two or more samples
Metals,Total
Digestion.Total Metals
lead210
Radium 226
Thorium.Isotopic
Same As Above
Same As Above
Same As Above
Same As Above
Same As Above
As appropriate,any exceptions or problems with the analyses are noted in the Laboratory Analytical Report.the
QAfQC Summary Report,or the Case Narrative.
Ifyou have any questions regarding these tests results,please call.
Report Approved BY:~~
SIEVECARtSroH
ENERGYLABORATORIES,INC.·2393SaltCreekHighway(82601;•AD.Box 3258 •Casper,WY82602'''~!/(l''Y TollFree888235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com
'btiliJl6fWijli'
IUGHVOL~A1RSAMPLINGREPORT
CLIENT:
REPORT DATE:
.PROJECT:
--"
SAMPLE'ID:
DENISON MINES
Februliry4,2009
4th Quarter2008J!:nl1toninentalAir Sampling
QuarterlDate Sampled Concentration Error L.L.D.Effluent %EffluentRadionuclideEstimateCone.·Air Volume /lCilmL /lCi/mL /lCi/mL /lCilmL Concentration
C08040302-OOI nlltu 1.I4E-16 N/A 1.00E-16 9.00E-14 1.26E-01
First Quarter 2008 2J0nJ I.I3E-16 2.63E-17 1.00E-16 3.00E-14 3.76E-OI
Air Voltune in mLs 22~a <1.00£-16 N/A 1.00E-16 9.00E-/3 <1.11E-02
1.36E+1I 210pb 6.44E-15 3.81E-16 2.00E-15 6.00E-13 1.07£+00
QuarterlDate Sampled Concentration Error L.L.D.Effluent %EmuentRadionuclideEstimateConc.·Air Volume IlCilmL JlCi/mL ,.CilmL JlCi/mL Concentration
C08070112-ool natV 7.09E-16 N/A 1.00E-16 9.00E-14 7.88E-OI
Second Quarter 2008 2JOorh 3.83E-16 1.03£-16 1.00E-16 3.00E-14 1.28E+00
Air Voltune in mLs 226Ra 2.27E-16 3.46E·17 1.00E-16 9.00E·/3 2.53E-02
124E+l1 2lOpb 6.52E·15 4.78E-16 2.00E-15 6.00£-13 1.09E+OO
QuarterlDate Sampled Concentration Error 1.L.D.Emuent %EffluentRadionuclideEstimateConc.·AirVolume ,.CilmL /lCi/mL /ICi/mL /lCi/mL Concentration
C08100264-00I n.tv 7.69E-16 N/A 1.00E-16 9.00£-14 8.54£-01
Third Quarter 2008 2J0nJ 2.94E-16 2.22E-18 1.00E-16 3.00£-14 9.80E-OI
Air Volume in mLs 226Ra 1.90E-16 4.30E·17 1.00E-16 9.00£-/3 2.1IE-02
1.36E+1I 210Pb 7.64E-15 4.16E-16 2.00E-15 6.00E-13 1.27£+00
QuarterlDateSampled Concentration Error L.L.D.Effluent %EmuentRadionuclideEstimateConc.·Air Volume ,.CilmL IlCilmL ,.Ci/mL uCi/mL Concentration
C09010 I63-00 I n.tv 1.21E-15 N/A 1.00£-16 9.00£-14 1.35£+00
Fourth Quarter 2008 2JOnJ 4.76E-16 5.54E-18 l.ooE-16 3.00E·14 1.59£+00
Air Volume in mLs 22~a 3.34E-16 2.49E-17 1.00E-16 9.00£-13 3.7IE-QZ
1.37E+1I 210pb 1.16£-14 5.54E-16 2.00E-15 6.00£-13 1.93£+00
LLD's are from Regulatory Guide 4.14
•Effluent Concentration provided by Denison Mines
ENERGYLABORATORIES,INC.·2393 SaltCreekHighway(82601)•P.D.Box3258 •Casper,WY82602IUgfltl'l¥TollFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com·em·l£I"·JiIli'
LABORATORY ANAlYTICAL REPORT
Client:Denison Mines (USA)Corp
Project:4th Quarter Air 2008
Lab 10:C09010163-001
Client Sample ID:BHV-1
Report Date:02/04/09
Col/ection Date:01/05/09
OateReceived:01/07/09
Matrix:Filter
Analyses Result Units
TRACE METALS
Uranium 0.256 mg/filter
Uranium,Activity 166 pCi/Filter
RADIONUCLlDES·TOTAL
Lead 210 1580 pCi/Filter
Lead 210 precision (t)42 pCilFilter
lead210 MDC 40 pCi/Filter
Radium 226 47.1 pCi/Filter
Radium 226 precision (t)4.7 pCilFilter
Radium 226 MDC 2.2 pCilFilter
Thorium 230 65 pCi/Filter
Thorium 230 precision (±)1.0 pel/Filter
Qualifiers RL
0.0003
0.2
0.20
MCU
QCL Method
SW6020
SW6020
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
Analysis Date 1By
01f13109 21:241 sml
01f14109 18:291ts
01f15/09 10:11 fdm
01fl5/0910:11/dm
01/15/0910:1.11 <1m
01f22109 08:311 Irs
01/22109 08:31 1Irs
0112210908:311 Irs
01118109 13:10f dmf
01f1810913:10/dmf
Report
Definitions:
Rl-Analyte reporting limit.
aCL-Quality control limit.
MOe -Minimum detectable concentration
MCl -Maximum contaminant level.
ND -Not detected at the reporting limit.
'.:1 ENERGYLABORATORIES,INC.•2393SaltCreekHighway (82601)•AD.Box 3258 •Casper,WY82802[Qglfl'¥17 TollFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com
·etmtJl&u.UIIj'
QuarterffiateSampled Concentration Error LLD.Effluent %EffluentRadionudideEstimateCone."AirVolume /iCilmL Jl,Ci/mL /iCi/mL llCi/mL Concentration
C08040302-002 nalU <1.00E-16 NIA 1.00E-16 9.00E-14 <1.11E-01
First Quarter 2008 2JO.rh <1.00E-16 NIA 1.00E-16 3.00E·14 <3.33E·Ol
Air Volwne inmL 22~<1.00E·16 N/A 1.00E-16 9.00E-13 <1.11E-02
1.37E+ll 210pb 6.49E-IS 3.82E-16 2.00E-IS 6.00E-13 1.08E+00
Quarterffiate Sampled Concentration Error LLD.Effluent %EfflllentRadionudideEstimateConc."AirVolllme J-tCilmL jl.CilmL /LCi/mL /.tCilmL Concentration
C08070112-002 mtU 1.29E·16 NlA 1.00E-16 9.00E-14 1.43E-Ol
Second Quarter 2008 230Th <1.00E-16 N/A 1.00E·16 3.00E-14 <3.33E-Ol
AirVoLwneinmL ~<1.00E-16 N/A 1.00E-16 9.00E-13 <1.11E-02
1.34E+11 210Pb 4.82E-15 4.5lE-16 2.00E-IS 6.00E-13 8.03E-Ol
Quarterffiate Sampled Concentration Error LLD.Effluent %EftlllentRadionuclideEstimateCone,"Air Volume J-tCi/mL /.tCi/mL /LCi/mL ItCiImL Concentration
C08100264-002 mtU 2.37E-16 N/A 1.00E·16 9.00E-14 2.63E-Ol
Third Quarter 2008 230Th <1.00E-16 N/A 1.00E-16 3.00E-14 <3.33E-Ol
AirVolwneinmL 226Ra <1.00E-16 N/A 1.00E-16 9.00E-13 <l.1lE-02
1.25E+11 210Pb 8.30E-IS 4.15E-16 Z.OOE-15 6.00E-13 1.38E+OO
Quarterffiate Sampled Concentration Error LLD.Effluent %EffluentRadionuclideEstimateCone."Air Volume J-tCi/mL uCi/mL /iCi/mL ItCiImL Concentration
C09010163-002 natu 5.71E-16 N/A 1.00E-16 9.00E-14 6.34E-Ol
Fourth Quarter 2008 2lDn 1.61E-16 5.54E-17 1.00E-16 3.00E-14 5.37E-Ol
Air Volwne inmL 226Ra 1.25E-16 2.35E·17 1.00E·16 9.00E-13 1.39E-02
l.37E+11 210Pb 2.048-14 5.54E-16 2.00E-15 6.00E-13 3.4IE+OO
LLD's are from Regulatory Guide 4.14
"Effluent Concentration provided by Denison Mines
ENERGYLABORATORIE$.INC.'2393Salt CreekHighway(82601)•Po.Box3258 •Casper,WY82602'«'limY ToUFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com
.fll·@U.1l1li'
LABORATORYANALYTICAL REPORT
Client:
Project:
Lab 10:
ClientSample 10:
Denison Mines (USA)Corp
4th Quarter Air 2008
C09010163-002
BHV-2
Report Date:02104109
Collection Date:01/05/09
oateReceived:01/07109
Matrix:Filler
Analyses Result Units Qualifiers Rl
MCL!
QCl Method Analysis DateJBy
TRACE METALS
Uranium
Uranium,Activity
RADIONUCUOES •TOTAL
Lead 210
Lead 210 precision (±)
Lead 210 MDC
Radium 226
Radium 226 precision (:I:)
Radium 226 MOC
Thorium 230
Thorium 230 precision (±)
0.116
78.3
2790
52
40
18.6
3.0
2.1
22
4.6
mg/filter
pCi/Fliter
pCi/Filter
pCi/Filler
pCiJFilter
pCi/Filler
pCilFilter
pCiJFilter
pCi/Filter
pCiJFilter
0.0003
0.2
0.20
SW6020
SW6020
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
01113/0921:28/sml
01/13/0921:281 sml
01/15/0910:111 dm
01/15/0910:111 dm
01/15/0910:11/dm
01122109 08:31/Irs
01/2210908:311 Irs
01/22/09 08:31 1Irs
01/16/09 13:101 dmf
01/18/0913:10 (dmf
Report
Definitions:
RL -Analyte reporting limit.
eCL -Quality control limit.
MDC -Minimum detectable concentration
MCl-Maximum contaminant level.
NO -Notdetected at the reporting limit.
ENERG YLABORATORIES,INC.•2393SaltCreekHighway(82601)•P.D.Box3258 •Casper,WY82602
TollFree888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com..-------------------------------------
QuarterlDate Sampled Concentration Error L.L.D.EtRuent %EffluentRadionuclideEstimateCone."Air Volume flCilmL J,l.CilmL J.tCilmL J,l.CilmL Concentration
C08040302-003 natU 1.25E-16 N/A 1.00E-16 9.00E-14 l.39E-Ol
First Quarter 2008 230Th <1.00E-16 N/A 1.00E-16 3.00E-14 <3.33E-Ol
Air VolmneinmL 226Ra <1.00E-16 NlA 1.00E-16 9.00E-13 <l.llE-02
1.36E+11 210Pb 4.09E-15 3.04E·16 2.00E-15 6.00E-13 6.81E-Ol
QuarterlDate Sampled Concentration Error L.L.D.Effluent %EffiuelltRadionuclideEstimateCone."AirVolume flCilmL /l-CilmL 1tCi!mL J,l.CilmL Concentration
C08070112-OO3 natU 1.28E·15 N/A 1.00E-16 9.00E-14 1.42E+OO
Second Quarter 2008 230Th 7.72E-16 2.09E-16 1.00E-16 3.00E·14 2.57E+OO
Air Volwne inmL 226Ra 3.6lE-16 4.30E-17 1.00E·16 9.00E-13 4.01E-02
1.24E+l1 2lOPh 1.18E-14 5.73E-16 2.00E-15 6.00E-13 1.97E+OO
QuarterlDate Sampled Concentration Error L.L.D.Emuent %EffluentRadionuclideEstimateCone."Air Volume f.l.CilmL J,l.CilmL ILCi/mL J,l.CilmL Concentration
C08100264-003 nalU 2.72E-15 N/A 1.00E-16 9.00E-14 3.02E+OO
Third Quarter2008 230Th 1.27E-15 1.39E-17 1.00E-16 3.00E-14 4.23E+OO
Air Volume inmL 226Ra 7.66E-16 8.18E-17 1.00E-16 9.00E-13 8.5lE-02
1.36E+11 210Ph 1.10E-14 4.72E-16 2.00E-15 6.00E-13 1.83E+OO
QuarterlDate Sampled Concentration Error L.L.D.Effluent %EffluentRadionuclideEstimateCone."Air Volume f.l.CilmL J,l.CilmL f.l.CiImL J,l.Ci/mL Concentration
C09010163-003 natU 2.88E-15 N/A 1.00E-16 9.00E-14 3.2lE+OO
Fourth Quarter2008 230Th 1.10E-15 3.25E-16 1.00E-16 3.00E-14 3.61£+00
Air Volume in mL 226Ra 6.56E-16 2.22E-17 1.00E-16 9.00E-13 7.29E-02
1.36E+11 210Ph 1.38E·14 5.55E-16 2.00E-15 6.00E-13 2.30E+OO
LLD'Sare from Regulatory Guide 4.14
"Effluent Concentration provided by Denison Mines
ENERGYLABORATORIES-INC.·2393SaIl Creek Highway(82801)'P.O Box 3258 •Casper,WY82602/9gfi/ll"7 lOllFree 888.235 0515 •307.2350515 •Fax [phone] •[e-mail]·www.energylab.com
Rtrt.kIJ'i.',U"
lABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample 10:
Denison Mines (USA)Corp
4th QuarterAir2008
C09010163-003
BHV·4
Report Date:02/04/09
Collection Date:01/05/09
DateReceived:01/07/09
Matrix:Filter
Analyses Result Unils
TRACE METALS
Uranium 0.581 mglfiller
Uranium.Activity 393 pCi/Filter
RADIONUCLIDES -TOTAL
Lead 210 1880 pCi/Filter
Lead 210 precision (f)45 pCi/Filter
Lead 210 MDC 40 pCilFilter
Radium 226 90.8 pCI/Filter
Radium 226 precision (±)6.1 pCilFilter
Radium 226 MOC 2.0 pCi/Filter
Thorium 230 150 pCilFilter
Thorium 230 precision (±)24 pCI/Filter
Qualifiers RL
0.0003
0.2
0.20
MCU
QCL Method
SW6020
SW6020
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
Analysis Date I By
01/1310921:32/sml
01/13/0921:321 sml
01115/0910:11/dm
01115/0910:11/dm
01115/0910:111 dm
0112210908:31 /Irs
01/2210908:31 'Irs
01/22109 08:31 'Irs
01/1810913:10'dmf
01/1810913:10/dmf
Report
Definitions:
Rl -Anaiyle reporting limil
QCL-Quality controllimil
MOe -Minimum detectable concentration
MCl -Maximum contaminant level.
NO -Not detected at the reporting limit.
ENERGYLABORATORIES,INC.·2383SaltCreek Highway(82601)•AD.Box 3258 •Casper,WY82602Ig~9({"'7 70/1Free888.235.0515 •307.235.0515'Fax [phone] •[e-mail]·www.energyJab.com
'.'diH&U.lIU¥f
QuarterlDate Sampled Concentration Error L.L.D.Effluent %EffluentRadionudideEstimateCone."Air Volume IlCilmL ILCilmL /tCilmL uCilmL Concentration
C0804030Z-D04 natU 3.16E-16 N/A 1.00E-16 9.00E-14 3.51E-ol
First Quarter Z008 2~6.17E-16 4.26E-17 1.00E-16 3.00E-14 2.06E+OO
Air Volume in mL 226Ra 3.70E-16 3.67£-17 1.00E-16 9.00E-13 4.11E.QZ
1.36E+11 210Pb 4.82E-15 1.75E-16 2.00E-15 6.00E-13 8.03E.Ql
QuarterlDate Sampled Concentration Error L.L.D.Effluent %EffluentRadionudideEstimateCODe."Air Volume /tCilmL lLCilmL /tCilmL IJ.CilmL Concentration
C08070112-004 n.tu 3.13£.15 N/A 1.00E-16 9.00E-14 3.48E+OO
Second Quarter2008 Bon 1.55£.15 2.30E-16 1.00E-16 3.00E-14 5.15E+OO
Air VolumeinmL 22~9.27E-16 4.20E-17 1.00E-16 9.00E-13 1.03E-ol
1.33E+11 2lOPb 7.40E-15 2.73E-16 2.00E-15 6.00E-13 1.23E+00
QuarterlDate Sampled Concentration Error L.L.D.Effluent %EffluentRadionudideEstimateCone."Air Volume /tCilmL J.l.CilmL /tCilmL IlCifmL Concentration
C08100264-004 natu 7.08E-15 N/A 1.00E-16 9.00E-14 7.86E+OO
llrird Quarter 2008 23O-rh 304lE-15 1.98E-17 1.00E-16 3.00E-14 1.14E+Ol
Air Volume inmL 226Ra 2.52E-15 8.43E-17 1.00E-16 9.00E-13 2.80E-ol
1.36E+11 210pb 1.15E-14 2.56E-16 2.00E-15 6.00E-13 1.92E+OO
QuarterlDate Sampled Concentration Error L.L.D.Effluent %EffluentRadionudideEstimateCone."Air Volume /tCilmL ILCilmL /tCilmL uCilmL Concentratioll
C09010163-004 natu 7.22E-15 N/A 1.00E-16 9.00E-14 8.02E+OO
Fourth Quarter 2008 230Th 2.82E-15 4.12E-16 1.00E-16 3.00E-14 9.41E+OO
AirVolume in mL 22~3.03E-15 1.41£-17 1.00E-16 9.00E-13 3.31£-01
1.36E+11 2[Opb 1.59E-14 2.94E-16 2.00E-15 6.00E-13 2.65E+OO
LLD's are from Regulatory Guide 4.14
"EffluentConcentration provided by Denison Mines
ENERGYLABORATORIE5,INC_-2383SaltCreekHigl7way(82601)-P.O.Box3258 -Casper,WY82802':tg.;tt{(f!f'il 7i:JII Free 888.235.0515 -307.235.0515 •Fax [phone] [e-mail] -www.energylab.com
'eta.Ultl.t,Ui'
lABORATORY ANALYTICAL REPORT
Client:Denison Mines (USA)Corp
Project:4th QuarterAir 2008
Lab ID:C09010163-004
Client Sample 10:SHY-5
Report Date:02104/09
Collection Date:01/05/09
DateReceived:01/07/09
Matrix:Filter
Analyses Result Units
TRACE METALS
Uranium 1.45 mglfilter
Uranium.Activity 982 pCi/Filter
RADIONUCLIDES·TOTAL
Lead 210 2160 pCi/Filter
Lead 210 precision (±)47 pCi/FUter
lead 210 MDC 40 pCi/Filter
Radium 226 414 pCi/Filter
Radium 226 preclslon (i)12.8 pCilFilter
Radium 226 MDC 2.0 pCi/Filter
Thorium 230 384 pCI/Filter
Thorium 230precision (i)56 pCi/Filter
Qualifiers RL
0.0003
0.2
0.20
MeL!
QCL Method
SW6020
SW6020
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
Analysis Date 1By
01/13/0921:361 sml
01/1310921:361 sml
01/15/0910:11/dm
01/1510910:11/dm
01/15/0910:111dm
01/2210908:31/trs
01/2210908:311 trs
01/2210908:31/Irs
01/18/0913:101 dmf
01/18/0913:10/dmf
Report
Definitions:
Rl-Analyte reporting limit.
QCl -Quality conlrollimit.
MOC -Minimum detectable concentration
MCl -Maximum contaminantlevel.
NO -Notdetected at the reporting limit
ENERGYLABORATORIES,INC.•2393SaltCreekHighway (82601)•Ro.Box 3258 .Casper,WY826021«;[(l!ll'~TollFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com
«etY-YlJM""
IIIGH VOLUME AIR SAMPLING REPORT
CLIENT:'
REPORTDATE:
PROJECT:.
SAMPLEID:
DENISON MINES
February 4;2009
4tbQuarter2008 Environmental Air Sampling
BHV'-6
Quarterillate Sampled Concentration Error L.L.D.Effluent %EffluentRadillnuclideEstimateCone,"AirVolume I!Ci/mL IlCi/mL I!Ci/mL llei/mL Concentration
C08040302-005 natU 4.34E-16 N/A 1.00E-16 9.00E-14 4.83E·Oi
First Quarter 2008 230Th 3.5IE-16 3.38E·17 1.00E-16 3.00E-14 I.l7E+00
Air Volume in mLs 226Ra <J.00E-16 N/A 1.00E·16 9.00E-13 <I.11E-02
l.36E+1I 210pb 5.99E-15 1.94E-16 2.00E·15 6.00E-13 9.98E-OI
Quarterillate Sampled Concentration Error LL.D.Effluent %EffluentRJidionuclideEstimateCone,"AirVolume /LCi/mL IlCi/mL I1Ci/mL /lCi/mL Concentration
C08070112-005 natU 1.88E-15 N/A 1.00E·16 9.00E·14 2.09E+OO
Second Quarter 2008 23Drh 9.00E-16 1.43E-16 1.00E·16 3.00E-14 3.00E+00
Air VlI!ume in mLs 2Z~a 4.04E-16 2.85E-17 1.00E-16 9.00E-13 4.49E-02
1.33E+II 210Pb 7.41E-15 2.73E-16 2.00E-15 6.00E-13 1.24E+OO
QuarterlDate Sampled Concentration Error L.L,D.Effluent %EffluentRadionuclideEstimateCline,"Air Volume /LCi/mL !lCi/mL I1Ci/mL /lCi/mL ClIncentration
C08100264·005 natU 4.82E-15 NlA 1.00E-16 9.00E-14 5.35E+00
Third Quarter 2008 23Drh 2.10E-15 1.54E-17 1.00E-16 3.00E-14 6.99E+OO
AirVolume in mLs 22~a 1.27E-15 6.59E-17 1.00E-16 9.00E·13 1.4lE-Oi
1.36E+II 210Pb 1.00E-14 2.42E-16 2.00E-15 6.00E·13 1.67E+00
QuarterlDate Sampled Concentration Error L.L.D.Effiuent %EffluentRadionuclideEstimateCone,"Air Volume I!Ci/mL !lCi/mL I!Ci/mL /lCi/mL Concentration
C09010163·005 natU 4.80E-15 N/A 1.00E-I6 9.00E-14 5.34E+OO
Fourth Quarter 2008 23Drh 1.70E-15 2.65E-16 1.00E-16 3.00E·14 5.68E+OO
Air Volume in mLs 22~USE-IS L76E-17 I.OOE-16 9.00E·13 1.39E·OI
1.36E+l1 210pb 1.49E·14 2.94E·16 2.00E-IS 6.00E·13 2.49E+OO
LLD's are from Regulatory Guide 4.14
*Effluent Concentration provided by Denison Mines
ENERGYLABORATORIES.INC••2393SaltCreekHighway(82601)•P.D.Box 3258 •Casper,WY82602",«l.,ltl TollFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail] •www.energylab.com
.&tn.#&UeUlIJi
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample 10:
Denison Mines (USA)Corp
4th Quarter Air 2008
C09010163-005
BHV·6
Report Date:02104/09
Collection Date:01/05/09
DateRecelved:01/07/09
Matrix:Filler
Analyses Result Units
TRACE METALS
Uranium 0.966 mglfilter
Uranium,Activily 654 pCi/Filter
RADIONUCLJDES·TOTAL
Lead 210 2030 pel/Fiiter
Lead 210 precision (t)46 pCilFiIler
Lead 210 MDC 40 pCi/Filter
Radium 226 172 pCi/Filter
Radium 226 precision (t)9.1 pCi/Filter
Radium 226 MDe 2.4 pCi/Filter
Thorium 230 232 pCi/Filler
Thorium 230 precision (tl 36 pCi/FiIler
QualifIers RL
0.0003
0.2
020
MCU
QCL Method
SW6020
SW6020
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
Analysis Date /By
01113/09 21:40I sml
01113/09 21:40I sml
01/15/0910:111 dm
01115109 10:111 dm
01/15/0910:111 dm
0112210908:311 Irs
01122109 08:31/Irs
0112210908:31 /trs
01/1810913:10/dmf
01/18/0913:101 dmf
....._._._--._--------------------
Report
Definitions:
RL·Analyte reporting iimi!.
QCl-Quality controllimil.
MOC -Minimum detectable ccncentration
Mel·Maximum contaminant level.
ND·Not detected at the reporting limit.
ENERGYLABORATORIES,INC.•2393SaltCreekHighway (82601)•Ao.Box 3258 .Casper,WY82602,ggglltF:l'iI Toll Free 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com'4tdiU&,,·t;lii'
...
mGH VOLuME AIRSAMPLING REpoRT
CLffiNT:
REPORT DATE:
PROJECT:
SAMPLEID:
DENISON MINES
February 4,2009
4th Quarter 2008 Environmental Air Sampling
BLANK
QuarterlDateSampled Concentration Error L.L.D.Emuent 0/.EffluentRad/onuel/de Estimate Cone.·Air Volume /lCi/mL pCi/mL /lCi/mL pCi/mL Concentration
C08040302-006 natV <1.00E-16 N/A 1.00E-16 9.00E-14 <1.11E-01
First Quarter 2008 230Th <1.00E-16 N/A 1.00E-16 3.00E-14 <3.33E-01
Air Volume in roLs 226Ra <1.00E-16 N/A 1.00E-16 9.00E-13 <I.1IE-02
1.36E+II 2lOPb <2.00E-15 N/A 2.00E-15 6.00E-13 <3.33E-01
AirVolume for Blankassumed to be nommal ofSamples;136,000,000 Lllers.
QuarterlDate Sampled Concentration Error L.L.D.Emuent %EftluentRadionuclideEstimateCone.·AirVolume /lCi/mL pCi/mL /lCi/mL JlCi/mL Concentration
C08070112·OO6 natV <1.00E-16 N/A 1.00£-16 9.00£-14 <I.IIE-OI
Second Quarter2008 2lOrh <1.00E-16 N/A 1.00E-16 3.00&14 <3.33E-OI
Air Volume in mLs 226Ra <1.00E-16 N/A 1.00E-16 9.00&13 <I.11E-02
1.30E+/I 210Pb <2.00E-15 N/A 2.00E-15 6.00E-13 <3.33E-OI
AirVolume for Blank assumed to be nommal ofSamples;130,000,000 Liters.
QuarterlDateSampled Concentration Error L.L.D.Emuent %EffluentRadionuclideEstimateCone.·Air Volume /LCi/mL /lCi/mL /lCi/mL /lCi/mL Concentration
C08100264-006 natV 1.38E-16 N/A 1.00E-16 9.00E-14 1.53E-01
Third Quarter 2008 230rh <1.00&16 N/A 1.00E-16 3.00E-14 <3.33E-01
Air Volume in mLs 2~a <1.00E-16 N/A 1.00E-16 9.00E-13 <I.lIE-02
1.30E+ll 2lOPb <2.00E-15 N/A 2.00E-15 6.00E-13 <3.33E-01
Air Volume for Blank assumed to be nommal ofSamples;130,000,000 Liters.
QuarterlDate Sampled Concentration Error L.L.D.Emuent %EmuentHadionudideEstimateCone.·AirVolume /lCi/mL /lCi/mL /lCi/mL lICilmL Concentration
C09010163-006 natu <I.OOE·16 N/A 1.00£-16 9.00E-14 <!.lIE-O!
Fourth Quarter 2008 2lDrh <1.00E-16 N/A 1.00E-16 3.00E-14 <3.33E·OI
Air Volume in mLs 22~a <I.00E-16 N/A 1.00E-16 9.00E-13 <I.1IE-02
1.30E+1I 210pb <2.00E-IS N/A 2.00E-15 6.00E·13 <3.33E-01
Air Volume for Blank assumed to be nommal ofSamples;130,000,000 Liters.
LLD's are from Regulatory Guide 4.14
•Emuent Concentration provided by Denison Mines
ENERGYLABORATORIES,INC••2393Salt CreekHighway (82601)•P.O Box3258 •Casper,WY82602,gg;{(lflJ7 TollFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com
••td-1l4u•m",
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample 10:
Denison Mines (USA)Corp
4th Quarter Air2008
C09010163-006
Blank.
Report Date:02/04/09
Collection Date:01/05/09
DateReceived:01/07/09
Matrix:Filter
Analyses Result Units Qualifiers RL
MCU
QCL Method Analysis Date /By
TRACE METALS
Uranium
Uranium.Activity
0.0109 mgltilter
7.4 pCi/Filter
B 0.0003
0.2
SW6020
SW6020
01/14/09 18:351 Is
01/14/09 18:351 ts
RADIONUCUDES -TOTAL
Lead 210
Lead 210 precision (±)
Lead 210 MOe
Radium 226
Radium 226 precision (±)
Radium 226 MOC
Thorium 230
Thorium 230 precision {±}
26 pCI/Filter U
24 pCi/Filter
40 pCi/Filler
0.6 pCilFilter U
1.4 pCilFilter
2.3 pCi/Filter
3.2 pCilFilter 0.20
1.6 pCi/Filter
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
01/15/0910:111 dm
01/15/09 10:111 dm
01/15/0910:11/dm
01/22109 08:31 1ITs
01/2210908:311 ITs
01/22109 08:31 1ITs
01/18/0913:101 dmf
01118/0913:101 dmf
Report
Definitions:
Rl -Analyte reporting limit.
QCL·Quality control limit.
MOe -Minimum detectable concentration
U-Not detected at minimum detectable concentration
MCl -Maximum contaminant level.
ND -Not detected at the reporting limit.
B -The analyte was detected in the method blank.
ENERGYLABORATORIES,INC••2393Salt CreekHighway(82801)•P.D.Box 3258 •Casper.WY82802tgg:trlflJY Toll Free 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com
Rtg_kla-t;Il"
QAlQC Summary Report
Client:Denison Mines (USA)Corp
Project:4th QuarterAir 2008
Report Date:02104/09
Work Order:C09010163
Analyte Result Units RL %REC Low Limit High Limit RPD RPOLImit Qual
Method:E903.0
Sample10:C09010057-o05ADUP
Radium 226
Sample 10:C09010163-006AMS
Radium 226
Sample 10:LCS-21078
Radium 226
Sample 10:MB-21078
Radium 226
Method:E907.0
Sample Duplicate
-1.42 pCI/Filter
Sample Matrix Spike
78.5 pCi/Filter
LaboratoryControl Sample
15.2 pCI/Filter
Method Blank
0.2 pCifFilter
Run:BERTHOLD 770-2_090115B
16
Run:BERTHOLD 770-2_090115B
105 70 130
Run:BERTHOLD 770-2_090115B
100 70 130
Run:BERTHOLD 770-2_090115B
Batch:21078
01/2210902:56
125.6 U
0112210908:31
01/2210908:31
01/22109 08:31
U
Batch:21078
Sample 10:C09010163-001AMS Sample Matrix Spike Run:EGG-ORTEC_090114A 01/1810913:10
Thorium 230 124 pCilFilter 0.20 134 70 130 S
-Spike response is outside ofthe acceptance range for this analysis.Since the lCSand the RPD for theMS MSD pair are acceptable.the responseis considered to be
matrixrelated.The batch is approved.
Sample 10:C09010163-001AMSD Sample Matrix Spike Duplicate Run:EGG-ORTEC_090114A 01/1810913:10
Thorium 230 108 pCI/Filter 0.20 102 70 130 14 45.5
Sample 10:LCS-21078 Laboratory Control Sample Run:EGG-ORTEC_090114A 01/1810913:10
Thorium 230 4.64 pCifFilter 0.20 95 70 130
Sample 10:MB-21078 Method Blank Run:EGG-ORTEC_090114A 0111810913:10
Thorium 230 0.2 pCifFilter
Method:E909.0M Batch:21078
SampleJO:C09010057-007~S Sample Matrix Spike Run:PACKARD 3100TR_090115B 01/15/0910:11
Lead 210 1380 pCI/Filter 109 70 130
SamplelD:C09010057-007AMSD Sample Matrix Spike Duplicate Run:PACKARD 31ooTR_090115B 0111510910:11
Lead 210 1490 pCifFilter 119 70 130 7.5 30
Sample 10:MB-R113841 Method Blank Run:PACKARD 31ooTR_090115B 01115/09 10:11
Lead 210 2 pCI/Filter U
SampleJO:LCS·R113841 Laboratory Control Sample Run:PACKARD 3100TR_090115B 01/15/0910:11
Lead 210 96.2 pCI/Filter 81 70 130
Qualifiers:
RL -Analyte reporting limit.
S -Spike recovery outside of advisory limits.
ND -Not detected atthe reporting limit.
U -Not detected at minimum detectable concentration
ENERGYLABORATORIES-INC.•2393Salt CreekHighway(82601)•P.O.Box 3258 •Casper,WY82602l«grlf!)~TollFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail] •www.energylab.com
'&'d·iftiU•U11¥'
QAlQC Summary Report
Client:Denison Mines (USA)Corp Report Date:02104/09
Project:4th Quarter Air 2008 Work Order:C09010163
Analyle Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual
Method:SW6020 Batch:21078
Sample ID:MB-21078 Method Blank Run:ICPMS2-C_090114A 01/14f0917:15
Uranium 0.002 mg/filter 6E-05
Sample 10:MB·21078 Method Blank Run:ICPMS4-C_090113A 01/13f0919:58
Uranium 0.002 mglfilter
Sample 10:LCS1·21078 laboratory Control Sample Run:ICPMS4-C_090113A 01113f0920:19
Uranium 0.0976 mgffilter 0.00030 96 75 125
SamplelD:C09010163-006AMS Sample MatrixSpike Run:ICPMS4-C_090113A 01/13f0922:04
Uranium 0.0638 mglfilter 0.00030 104 75 125
Sample 10:C09010163-006AMSD Sample Matrix Spike Duplicate Run:ICPMS4-C_090113A 01/1310922:08
Uranium 0.0636 mg/filter 0.00030 104 75 125 0.3 20
Qualifiers:
RL -Analyte reporting limit.NO -Not detected at the reporting limit.
-.LOfi-.PChainofCustodyandAnalyticalRequestRecordlIlIlJIlI!JJ7'·'uunwtldl4W .-__~__••,.....---••..,.......,.u....,.,...""'.,tttlVIII,g",\"f'1 a~DvgG'.w.....
c~anyName:.Project Nam~PWS.Permit,Etc.Sample Origin EPNState Compliance:
.\\~1I\~<''''lA yVL ~.,_\'I'It.lJl"lA ~,;r:,./~\;707fX~State:{AT Yes 0 No 0
Report Mail Addr(1S:Contact Name:Phone/Fax:Email:Sampler:(Please Print),rJ..~6J·A~3"()tl{S;ll R'l~flt'/~~?Y-Z2-~1 /2Y4-/jlA-l~
Invoice Address:~~ce Contact &Phone:Purchase Order:QuotelBottle Order:
5.4W1£..0::u.,,.~-;-.4 j{If-::rr ,..e-"Z-ef
Special Report/Formats -ELI must be notified &G:!l&I1):7"®O@ OO[g®QD~~1ID Contact ELI prior to .s?~C1 ~:.,~.""
Prior to sample submittal for the following:0 ~R RUSH sample submittal V,v~R'.....fl.VF-I
;CD en ~forcharges and Coolor10(1)•
.5>;G~0 ~scheduling -See _.,/E~~rn ~t;..U Instruction Page et~Dow 0 A2LA 8<'8 ~()§Comments:Rec:elpIT~poGSADEOO/EOT(ElectronicData)e~~I~I ~~!-;;:O:::::--I:=:=:==o",:C=--i
D .../-<tl 0 I-<::S nco:POTWfVINIlTP Format:~.s!:!~I$2 ~c::(5 Yes NooState:0 LEVElIV ~~I~l .'-'-J ~~UJ ~CUllloclySeal ~o Other:0 NELAC (J)>1 t'~~j lli §H Bottiesl B0~""e-.:'"~CoolenJ 8~f-------------,------,------I-----1 <::f:Inlact .N
SAMPLE IDENTIFICATION Collection Collection MATRIX:::::-':~1 1~Signature
(Name,Location,Interval,etc,)Date Time ~.~~Match N
1 Bfff/-I 1tJ1.~~.()~,N~Jlj-14 /'///l \rl'4C....I\()\((j2.I~
2 I~H1I-·2 J l////I~
3 IS}~\1 '4 I /////~
4 i5t~V,~')V ///~
5 i34;V-b I I V ///~
6 ~/trrl/(~/..o~()~IJd 14 ..n..,////~
7'~
6 ~(:)
9 ~~
10 /l t::::!
Custody 12~=b~nl~.../J Ji:4'Z~fJ 1 /(J10 1~:e J/J Received by (print):DatefTIme:Signature:
Record Rl>linq.ished bYlprinl):"lJalerllme:I )1lnature:•Received by (print):lJatefTime:Sig~~~e:
MUST be II ..//
SI d ~R~..JPd b~Laborato<y:DatefTIme:,R:;;JlIIlature:gne Sample Disposal:Return to Client:Lab Disposal:/':./5/?/::;;.h'/j 1-7YJ9 9(~~qif/~-
In certain circumstances,samples submitted to Energy Laboratories.Inc.may be subcontracted to other certified laboratories in order tocompletethe analysis requested.
This serves as notice of this possibility.All sub-contract data will be clearly notated on youranalytical report.
Visit ourweb site at www.energylab.com for additional information,downloadable feeschedule,forms,and links.
Energy Laboratories Inc
Workorder Receipt Checklist
Denison Mines (USA)Corp
III~I~~~I~~I~I~II~~~~~~~II
C09010163
Login completed by:Kimberly Humiston
Reviewed by:
Reviewed Date:
Shipping containerfcooler in good condition?Yes 0
Custody seals intact on shipping containerfcooler?Yes 0
Custody seals inlact on sample bottles?Yes 0
Chain ofcustody present?Yes 0
Chain ofcustody signed when relinquished and received?Yes 0
Chain ofcustody agrees with sample labels?Yes 0
Samples in propercontainer/bottle?Yes 0
Sample containersintact?Yes 0
Sufficient sample volume for indicated test?Yes [{1
All samples receiVed within holding time?Yes 0'
ContainerfTemp Blanktemperature:N/Ne
Water·VOA vials have zero headspace?Yes 0
Water·pH acceptable upon receipt?Yes 0
Contact and Corrective Action Comments:
None
Date and Time Received:1/7/20099:30 AM
Received by:pb
Carrier name:Next Day Air
No 0 Not Present 0
No 0 Not Present 0
NoD Not Present 0
NoD
NoD
No 0
No 0
No 0
NoD
No 0
NoD No VOA vials submitted 0
NoD Not Applicable 0'
ENERGYLABORATORIES,INC.·2393SaltCreek Highway(82601)•AD Box 3258 •Casper,WY82602,g..";(({!:J¥TollFree 888.235.0515 •301235.0515 •Fax [phone] •[e-mail]·www.energy/ab.com
IM'U·U!k·k11j,
CUENT:Denison Mines (USA)Corp
Project:4th Quarter Air 2008
Sample Delivery Group:C09010163
ORIGINAL SAMPLE SUBMllTAL(S)
All original sample submittals have been returned with the data package.
Date:04-Feb-09
CASE NARRAliVE
SAMPLE TEMPERATURE COMPLIANCE:4°C (±2°C)
Temperature ofsamples received may not be considered properly preserved by accepted standards.Samples that are hand
delivered immediately after collection shall be considered acceptable ifthere is evidence that the chilling process has begun.
GROSS ALPHA ANALYSIS
Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters.Data provided by
this method for non potable waters should be viewed as inconsistent.
RADON IN AIR ANALYSIS
The desired exposure time is 48 hours (2 days).The time delay in retuming the canister to the laboratory for processing
should be as short as possible to avoid excessive decay.Maximum recommended delay between end ofexposure to
beginning ofcounting should not exceed 8 days.
SOIUSOLID SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE,SIMAZINE AND PCB ANALYSIS USING EPA 505
Data for Atrazine and Simazine are reported from EPA 525.2,not from EPA 505.Data reported by ELI using EPA method
505 reflects the results for seven individual Aroclors.When the results for all seven are ND (not detected),the sample
meets EPA compliance criteria for PCB monitoring.
SUBCONTRACTING ANALYSIS
Subcontracting of sample analyses to an outside laboratory may be required.If so,ENERGY LABORATORIES will utilize its
branch laboratories or qualified contract laboratories for this service.Any such laboratories will be indicated Within the
Laboratory Analytical Report.
BRANCH LABORATORY LOCATIONS
ell-b -Energy Laboratories,Inc.-Billings,MT
eli-g -Energy Laboratories,Inc.-Gillette,WY
eli-h -Energy Laboratories,Inc.-Helena,MT
eli-r -Energy Laboratories,Inc.-Rapid City,SD
eli-t -Energy Laboratories,Inc.-College Station,TX
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Oregon:WY200001;Utah:3072350515;Virginia:00057;Washington:C1903
ISO 17025 DISCLAIMER:
The results of this Analytical Report relate only to the items submitted for analysis.
ENERGY LABORATORIES,INC.-CASPER,WY certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities.Some results requested by the client may not be covered
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THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT
--_.._~._---------
Tab 6
BHV-6 Radionuclide Concentrations (uCi/ml)
1.00E-11 F=
-------.--.---.---..-----.---------I
1.00E-12 I====::..-=--=----'=====-==--===--=-.::::::.:::::::.c=-==--=--==-c=::::.:ccc_-::::c::::::::===o.::====c:c::::_".=:_-=-=:c:.ccc:::.::==::::::::=::::::=:.:.c.::::::::::::::...-::-..::.-=:-..::.:::::===::::::=-..-==::===-=::--=-::::.:..-:::-:::.c:.:::=:===:===:=._._.__-_._._---_.._---_.__._.__._---_.._.._.._---_.--
1.00E-13 E====------.._---_._-_.._-----_._------
;;1.00E-14
'3U)
CD
d1.00E-15
1.00E-16
==-~~~.-~----
-~::...=-...:..-~
-----
, . .._]L_._...._-.---.--..-.-------.--..---.-.----..__._.__._
1.00E-17 ~..::.=-:=.:::::===--=--====-:-----..-=::::=====-:=::::.:::..--------------
1.00E-18
I------.---------------..--_..--.I
~Q,~<:)~<:)~<:)~"~"~"~I)..~I)..~I)..~n;,~n;,~n;,~~~~~~~~~~ro ~ro ~ro ~~~~co ~co ~co~~#~~#~~#~~#~~#~~#~~#~~#~~#~
I -+-U-Nat -+-Th-230 -+-Ra-226 -+-Pb-210 I
-:'\
Effluent Concentration Limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit =5E-12uCi/ml
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
BHV-6 Uranium Natural Concentrations (uCi/ml)
1.00E-11
f------------------------.------------------.---.-----..-00--.---.----
1.00E-12 ••__·_··••._.__•__••H·-----_..__..._._---
1.00E-13 __.__.......__._H......•••_.__......••__•......_•••••__•••_.............•••._......H••_••_•• ••_._•••••••._.••_,__••H __•__••_.._.__.._._..•__•__••__••_.•__•__••_•••••••••••••_••___••_••__••___._.••1
.._--
../\7--y--
~_...
~~
-----_._--._....-.-..._-_.1-.-'=~·~-:2"~;··=::~~~~~
1.00E-16
.1.00E-14
itu
U)
Clo
::::!.1.00E-15
._--------_.._-_._------_.._--_..._-_._._-_._._------_.__....._._------
1.00E-17 _.._-_.._...._----_._-_.__._---_...._...._---.._------_.._--_..__.._..__._-----
1.00E-18
~~~~~~~~~~~~~~~~~~~~~~~~~~~~#~~##~##~##~##~##~##~##~##
Effluent Concentration Limit =2E-14 uCi/ml
ALARA Goal =5E-13 uCi/ml
Pre 1994 MPC Limit =8E-14uCilml
Pre 1994 ALARA Goal =2E-14 uCi/ml
BHV-6 Thorium-230 Concentrations (uCilml)
1.00E-11
1.00E-12
1.00E-13
"i'1.00E-14
'iiuUJ
Q~-1.00E-15
1.00E-16
1.00E-17
1.00E-18
~~~~~~~~~~~~~~~~~~~~~~~~~~~~##~##~##~##~##~##~##~##~##
Effluent Concentration Limit =9E-13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
BHV-6 Radium-226 Concentrations
1.00E-11 I==---
1.00E-12
1 "-----------------
.._.__._~_..~----_._-__._.._..__-_-._._..________..__---_.••__._.•••__•• ••_••_.____._.__••••••_H _._____•••••__•__._••__•••___._.__•••_••__.
---
1-------------------_·_---_·_-_·_···_-_··_···-------_·.---.-.--.--.-----.~--------.-----I
1.00E-13 --
................_-___-~.__.__.._____..__.~._-..__..-..__.__.__._._.~._.._.._--_._.___..~_.__-_-._-._._.._..__._._-_.__._---_..-......__..__..__._---__-__._-..__-_._.._---__-~..__._.___.~_.__~_..~.._..__.__._--~._.._--_.._.__-_.._._._-__-__-~----_._--_.__.__.__._-_..-._._-.._-_..__._._._._-_._..__---_._-----_._--------------
_.__.-~.._---_.._.._-_._---~...._....._--_.._._.__._..._-_....._-_..-_._._._----_.-
_..._.__._-----_...__._-_.---_.....__.._..-----..~..__....._....._----_._---
I---.:A-------.-.----.-.---.--------.--------.----.--.----:-:.::::=..::.-=-==-:::-:--=-::=:=-.:--~-:-===--===:=-:=-:==-:==:=::::::::::::1\---.--.------------------------.-.-----1
1.00E-16
.1.00E-14
"iiiuenmo
d.1.00E-15
-lj{
1.00E-17 --
1.00E-18
~'?)~~~~~~))"~"~"~f},~f},~f},~t":J ~t":J ~t":J cl>'cl>'cl>'~':>~':>~':>~ro ~ro ~ro ~~~~CO ~CO~##~~#~##~##~##~##~##~##~##
Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA Goal =1E-12 uCi/ml
BHV-6 Lead-210 Concentrations (uCi/ml)
1.00E-11
1------
1.00E-12 ~--- ---~--~._-.._...-..---..
:::::----:=._.__:~-=-=:=-'::::=-_.=:::=~~=::'_._._.._.-.._.::::~..-::=:=-.=_:=---_-_-_-__.._-....:::::=:~-.::::::::::-_-_--_____-__-_.:.::::_=--=-___._.-_-=-_::.....=-----=
1-----_._-
--I--
1.00E-13 -...-..-..---..--....--..---===::.::::.:::.=:=-=.=:========:::::.:==:::--'-'--"-'--"'-"~::::::::::.:::::=:=::-==:::."--"-"-----'=-===--==--===:=-==::==---=---_._-_.._.._-_._------_._-_._.._____-_.__-_-_._____-_.__.___._._--_-------_.__._-"----_.._._.---_._.__.-.--_._.._--_.._.____._..__.._----_..__.___._._.__._.~..__.__._.._"'-'--"-"-~-"--'-""'-"'-'_.._._-_..__._..__.._.._--._.~._._...•-~__._--~_..__._-_._._----._._.____._.__._.__.____._..__.._-_._-._____.._--_.._-_._.___.._-__--__..__..-_.___.._..__.___.-.__._..___.._._-_____._._-___..__._.._.~..-_._..___---_..__.._-_..__._._._..___...._..___..__.._._.__._.._--_._._-__--_.._-----__._-_._..__.-...__._---~._._..__...__.._._._.._-_..._...__--_._..._....-_...._--__..-..._.___.._.__-------_..___..-_._..__.._-_..__----__..__....._.__.__...__.._.----_.__.__._-_.._--_._-_.._._..._.__._.._.._.__._--_.__.
._--_..__._._....._._--_._---_._--------__..__.....--_.--_..._--------_._...__.._-_._._-_..._----_.._---_..._------_.._.._.._.-_.-
-1.00E-14 ~-·~-··E~~~~~~~~~~~~~~~~~~~~~~~~~g~~~g~32~~~~~~~~~•III ......__.._..__
'3en ---
at.3-1.00E-15 l-:.__:~::~:::....::._c=::::::::_..__.__._.:::.c:::_..::::::._::::::=__;:::.::::::_=-....::::::::::::-_::_::.~:::_:::::-:::::::::c::::=:_._..._._...::::::::::::::::=._:::::=:::.::::;::_..:=.__.:::.::::::::::=::._...__._._._.._.._........::....::.._.._.._...__._.......:1-_._----_.__.._--_._.__._--_._...._..._...__---_._._...._._.._--_..._--_......_..._.__.._-_._...__._._._.__...__.._._._-_.___.__..._-_._..._...._._..__._---_.._..._..._.._-.__.__._._-_._..._._-_._._-_.._--------------_._------------------_.__._----_._....__.._---_.._--.._-_.--_.--_..._-.-._-.._----
1.00E-16 1-.-------..__._==-.:::::::...::...::::...c:...._....:::::._..._..:=_=-==_...::...::...:::::.:::::::::::::::.=:::...:::-::....::::::.....::'--_..::::::::......:::::....::::::.__--.=:._._..__.1
---_._._••__•__._-_._---._--_._-----------_..__.._------no
1.00E-17 ~_=_,'_~_~_~~"..~.."~=~.~_.:::::..._._=_=-_..__-'-._:......::-_._.~~-------_....__._.._._._.-._-_._.._._----_._-_._-_._----_.-.._..__.._..._._...__._._.._._.._._.._-_.__..._---_......._-_.._..-----_.._._.__._..._--------_.._....-_._---------------_.__..__._--------_._.__._-_._----------_.._-------_._._.._._._----_._._---------_._---_.-. ...-=iii::~==__~=~=~:=:==:::::=:===:===~:===:==:::::~===~:=:=-=:=:~~~=====:==~=~==:=-===:::~=_~_~_=:====-:.===:=:.===~:===-===:=~::=~:==:=::=:~_:=:::=.==.---------..-.....----.-.-..-.-.-..-------.-.------....-.....----------.--------I
1.00E-18 I I I I I I i I I I I j I I I
B ~~~"""n,n,n,~~~~~_II.b b b !O !O !O ",\~~,,10 !O~~~~~~~~~~~~~5:)5:)>yO ~~~~~~\~~)oJ ~~~)oJ ~\SS~~#~~##~##~##~#~~~~~~#~~#~~
LOCATION::->138V·~:::
3.55E-01
2.84E+-OO
2.39E+00
3.41E+00
1.06E+00
1.53E+00
9,98E-Ol
1.24E+00
167E+00
2.49E+00
2E-15
2E·15~
2E-15~
2E-15~
2E-15~
~
1,81E-16
5.17E-16
2,14E-16
742E-16
2,55E-16
2.77E·16
1.94E-16
2,73E-16
2.42E-16
2,94E-16
2.13E-15
1.70E-14
1.43E-14
2.04E-14
6.38E-15
9.19E-15
5.99E-15
7,41E-15
1.00E-14
1,49E-14
938E-17 lE 16 1.33E02
NA ~<1.11E.021
NA lE-16 <1.11E-02
742E-17 lE-16 1.72E·02
NA ~<1,11E-02j
6.30E·17 lE·16 3.51E-02
NA ~<1.11E.021
2.85E-17 ~4.49E-02
6.59E-17 lE-16 1,41E·Ol
1.76E-17~139E-Ol
1.19E-16
<1.00E-16
<1.00E-16
1.54E-16
<1E-16
3.16E-16
<1E·16
4.04E·16
1.27E-15
1.25E·15
4.97E-Ol
8.31E-Ol I
1.05E+00
7.28E+00
3.39E·Ol
5.17E+00
117E+00
3.00E+00
6.99E+00
5.68E+00
lE 16
lE-16~
lE-16~
-.lli:J.LlE-16
~lE-16
~
3.36E 17
5.04E-17
3.11E-17
5,74E-17
2.80E-17
1.30E-16
3.38E-17
1.43E-16
154E-17
2.56E-16
1.49E 16
2.49E-16
3.15E-16
218E-16
1,02E-16
1.55E-15
3.51E-16
9.00E-16
210E-15
1.70E·15
1E 16 5.59E 01
lE·16 9.23E+-OO~5.95E-01
lE·16 1.20E+00~4.36E-Ol
lE·16 3.24~4.83E·01
~2.09E+OO
lE-16 5.35E+00
~5.34E+00
5.03E 16
8.31E-16
5.36E·16
1,08E·15
3.92E·16
2.92E-15
4.34E-16
1.88E-15
4.82E-15
4.80E-15
02-0ct·06
01-Jan·07
2-Apr-07
2·Jul·07
30-Sep-07
31-0ec-07
31-Mar-08
6/3102008
30-Sep-08
31-0ec-08
URANIUM NAT THORIUM-230 RADIUM-226 LEAD -210
PERIOD GROSS LLD %GROSS COUNTING LLD %GROSS COUNTING LLD %GROSS COUNTING LLD %
ENDING CONC Ci/cc 1E-16 MPC CONC.uCllcc ERROR lE-16 MPC CONC.uCtlcc ERROR lE-16 MPC CONC.Cifcc ERROR lE-16 MPC
27-Sejr99 3.03E-15 lE·16 3.36E+00 1.37E-15 6.98E-17 lE-16 4.57E+00 8.72E-16 5.23E-17 lE-16 9.69E·02 7.55E-15 3.05E-16 lE-16 1.26E+00
28-Dec-99 5.01E-15 lE-16 5.56E+00 2.89E-15 1.25E-16 lE-16 9.63E+00 1,31E-15 6.53E-17 lE-16 1,46E·Ol 8.10E-15 3.17E·16 lE-16 1,35E+00
30·Mar-00 7.46E-16 lE-16 8.29E·Ol 5,25E-16 5,04E-17 lE-16 1.75E+00 3.00E-16 1.68E-17 lE-16 3.33E·02 7.83E-15 3.16E-16 lE-16 1.30E+00
26-Jun-00 5.40E-16 lE-16 6.00E-01 3.53E·16 3.62E-17 lE-16 118E+00 6.11E-16 5.34E-17 1E-16 6.79E-02 4.83E-15 2.93E-16 lE-16 8.05E-01
25-Sep·00 3.75E-16 lE-16 4.17E-Ol 2,23E-16 4,23E·17 lE-16 7.44E-Ol 1.91E-16 2.88E-17 lE-16 2.12E·02 6.41E-15 4.61E-16 lE-16 1.02E+00
26-Dec-00 5.21E-16 lE-16 5,79E·01 3.39E·16 5.04E-17 lE-16 1.13E+00 3.28E·17 2.80E-17 1E-16 3.64E-02 8,57E-15 4,70E-16 1E-16 1.43E+00
26·Mar·01 1.42E-16 lE·16 1.58E·01 <1.00E-16 NA 1E-16 <3.33E·Ol <1.00E-16 NA lE-16 <1,11E·02 6.15E-15 7.06E-16 lE-16 1.03E+-OO
2-Jul-01 1.81E-16 lE-16 2,01E-01 1.66E-16 3.59E·17 1E-16 5.52E·Ol <1.00E-16 NIA lE-16 <1.11E-02 6.95E-15 2.57E·16 lE-16 1.16E+00
24-Sep·Ol 3.08E-16 lE-16 3.42E-ol 1,01E-16 1.01E-17 1E·16 3.37E-Ol 1.77E-16 3.03E-17 lE·16 1.97E-02 8.59E-15 1,72E-16 lE-16 1.43E+00
31-0ec-Ol 3.31E-16 lE·16 3.68E·Ol 1.25E-16 2.72E-17 lE-\6 4.15E-Ol 1.09E-16 1.00E-17 lE-16 1.21E-02 314E·15 1.85E-16 1E-16 5.24E·Ol
1-Apr-02 4,77E-16 1E-16 5.31E·Ol 2.94E-16 4.10E-17 lE-16 9.82E-Ol 1.96E-16 1.61E-17 lE-16 2.18E-02 8,61E-15 1.70E-16 lE·16 1,43E+00
1-Jul-02 3.68E-16 lE-16 4.09E-Ol 4.41E-16 4.15E-17 lE-16 1.47E+00 1.76E-16 1,29E-17 lE-16 1.96E-02 8,20E·15 1.80E-16 lE-16 1.37E+00
30-Sep-02 3.67E-16 1E-16 4.08E-01 5.60E-16 4.44E-17 lE-16 1.87E+00 1.80E-16 1.29E·17 lE-16 2,00E-02 5.55E-15 110E-16 lE·16 9.26E-01
30·0ec-02 <1,00E-16 1E-16 <1.11E-Ol 3.43E-16 3,47E·17 1E-16 1.11E+00 1,67E-16 1.53E·17 lE·16 1.85E-02 1.35E-14 1.89E·16 lE·16 2.24E+00
31-Mar·03 1.98E-16 lE-16 2.20E-Ol 1.68E-16 2.66E-17 lE-16 5.61E-01 <1.00E-16 N/A lE-16 <1.11E-02 7.77E-15 148E-16 lE·16 129E+00
30-Jun·03 1.18E·16 lE-16 1.32E-01 115E-16 1.96E-17 lE-16 3.83E-01 <1,00E-16 NIA lE-16 <1.11E·02 5.92E-15 1,3·1E-16 lE-16 9.87E-Ol
zg-Sep·03 <1,00E-16 lE-16 <1.11E-Ol <1.00E-16 NIA lE-16 <1.11E-02 <1.00E-16 NfA lE-16 <1.11E·02 8.30E-15 1,95E-16 lE-16 1,38E+00
29-0ec-03 <1,00E-16 lE-16 <1.11E-Ol 1.36E·16 186E-17 lE-16 45E-01 <1.00E-16 NIA lE-16 <1.11E-02 6.66E-15 1,72E-16 lE-16 '.11E+00
29-Mar-04 <1.00E-16 lE·16 <1.11E-Ol <1.00E-16 NIA lE-16 <3.33E·02 <1.00E-16 NlA lE-16 <1.11E-02 8.17E-15 2.26E-16 lE-16 1,36E+00
27-Jun·04 <1.00E-16 lE-16 <1.11E-01 <1.00E·16 NIA lE-16 <3.33E·02 <1.00E-16 NIA lE-16 <1.11E-02 3.55E-15 2.21E-16 2E·15 5.92E-Ol
27·Sep-04 <1.00E-16 lE·16 <111E-Ol 138E·16 1.97E-17 lE-16 4.59E-Ol <1.00E-16 NIA 1E-16 <1.11E-02 1.22E-14 3.22E-16 2E·15 2.03E+00
27-0ec-04 1.05E-16 lE-16 1,16E·Ol 1,72E·16 2.35E-17 1E-16 5.7E-01 <1.00E-16 NIA 1E-16 <1.11E·02 152E·14 2.05E·16 2E-15 2.54E+00
28·M3r-05 <1.00E-16 lE-16 <1,11E·Ol <1,00E-16 NIA 1E-16 <3.33E·02 <1.00E·16 NIA 1E-16 <1.11E·02 9,34E-15 1,63E-16 2E-15 156E+00
2S-Jun-05 1.28E-16 1E-16 lA2E-Ol 1.01E-16 2.08E-17 lE-16 3.4E-01 <1.00E·16 NIA 1E-16 <1.11E-02 9.85E-15 185E·16 2E-15 1.64E+00
26-Sep·05 1.98E-16 lE·16 219E·01 5.98E-16 6.11E-17 1E-16 2.0E+00 3.55E·16 5.97E-17 1E-16 3.95E-02 1.71E-14 6,18E·16 2E-15 2.84E+00
3-Jan-06 7.67E-16 lE-16 8.52E-01 2.88E-16 4.08E-17 lE-16 9.6E-01 3,60E-15 1.63E-16 1E-16 4.00E-Ol 4,85E-14 6.99E·16 2E-15 8.09E+-OO
3-Apr--06 2,92E-16 1E-16 3.24E-01 2,00E-16 2.67E-15 lE-16 6.7E-Ol <1.00E-16 NIA lE-16 <1.11E·02 111E-14 2.52E-16 2E-15 1.85E+00
3·Ju!-06 3.25E-16 1E-16 3.61E-Ol 2_36E-16 3.92E-17 lE·16 7.9E-01 1.08E·16 3.64E-17 lE-16 1,20E-02 110E·14 4.28E-16 2E·15 183E+00
Attachment C
Period:~une 30,2008 through September 29,2008 (3rd Quarter 2008)Page 1
BHV-1 on slream %99.7%BHV-1 Tolal Voltnne:4.81E+06
SCFM
loading,PerCent
I
TotalTotalStartStopStopStartWeekF81er
#Number Date Dale Gross Tare Net TIme Time Time liters malm3 OnStream
I 782J171 30-Jun-08 7oJul-08 4.7629 4.5563 0.2066 4678.4 4511.9 9991.2 10,326,554 0.0200 99.1%36.5
2 7821165 07-Jul-08 I4-Jul·08 4.7672 4.5540 0.2132 4846.3 4678.4 10078.2 10,559,165 0.0202 100.0%37.0
3 7821159 I4-Jul-08 21-Jul-08 4.7872 4.5600 0.2272 5012.6 4846.3 9975.0 10,451,040 0.0217 99.0%37.0
4 7821153 21-Jul-08 28-Jul-08 4.6781 4.5407 0.1374 5180.6 5012.6 10078.2 10,559,165 0.0130 100.0%37.0
5 7821147 28-JuI-08 4-Aug-08 4.6381 4.4536 0.1845 5350.9 5180.6 10219.2 10,706,894 0.0172 101.4%37.0
6 7821141 04-Aug-08 ll-Aug-08 4.5813 4.4760 0.1053 5515.6 5350.9 9880.2 10,351,716 0.0102 98.0%37.0
7 7821135 II-Aug-08 18-Aug-08 4.6253 4.4692 0.1561 5683.4 5515.6 10071.6 10,523,73/0.0148 99.9%36.9
8 7821129 18-Aug-OB 25-Aug-08 4.6363 4.4760 0.1603 5850.4 5683.4 10017.6 10,467,307 0.0153 99.4%36.9
9 7821123 25-Aug-08 I-Sep-08 4.6230 4.4369 0.1861 6042.7 5850.4 1154l.6 12,059,722 0.0154 114.5%36.9
10 7821117 01-Sep-08 8-8ep-08 4.5653 4.4364 0.1289 6188.7 6042.7 8759.4 9,078,212 0.0142 86.9%36.6
II 782111l 08-Sep-08 15-Sep-08 4.5583 4.4349 0.1234 6352.9 6188.7 9851.4 10,154,165 0.0122 97.7%36.4
12 7821105 15-Sep-08 22.Sep-08 4.6389 4.4508 0.1881 6520.3 6352.9 10042.2 10,350.829 0.0182 99.6%36.4
13 7820499 22·Ser>-08 29-Sep.08 4.6094 4.3907 0.2187 6690.0 6520.3 10182.6 10,495.544 0.0208 101.0%36.4
Totals 91 2184.0 4.651638 4.479654 0.1720 130688.4 136,084.045 0.0164 99.7%36.8
BHV-2 on stream %91.9"Ai BHV·2 Total Volume:4.43E+06
Week Filter Start Stop Stop Start Total Total Loading,PerCent
#Number Date Dale Gross Tare Net Time Time Time Ltters mwm3 On Stream SCFM
1 7821170 3D-Jun-08 07.Ju~08 4.9630 4.5344 0.4286 15039.0 14872.6 9980.4 10,315,391 0.0415 99.0%36.5
2 7821164 07-Jul-D8 14.JlJI.06 4.9379 4.5483 0.3896 15206.9 15039.0 10073.4 10,554.136 0.0369 99.9%37.0
3 7821158 14-Jul-08 21.Jul-08 5.0540 4.5465 0.5075 15373.6 15206.9 10003.8 10,481.215 0.0484 99.2%37.0
4 7821152 21-Jul-08 28-Jul-08 4.8903 4.5357 0.3546 15541.2 15373.6 10057.8 10,537,792 0.0337 99.8%37.0
5 7821146 28-Jul-08 04-Aug-D8 4.5070 4.4858 0.0212 15541.4 15541.2 10.8 11,315 1.8736 0.1%37.0
6 7821140 04-Aug·08 11-Aug-D8 4.7349 4.4495 0.2854 15706.0 15541.4 9878.4 10,349,830 0.0276 98.0%37.0
7 7821134 11-Aug-D8 18-Aug.08 4.8130 4.4793 0.3337 15873.8 15706.0 10066.2 10,518,088 0.0317 99.9%36.9
8 7821128 18-Aug·08 25-Aug-08 4.8568 4.4832 0.3736 16040.8 15873.8 10023.0 10.472,949 0.0357 99.4%36.9
9 7821122 25-Aug-08 01.Sep-08 4.9062 4.4355 0.4727 16233.1 16040.8 11535.0 12,052,825 0.0392 114.4%36.9
10 7821116 01-8ep-08 08·Sep-08 4.6661 4.4268 0.2413 16379.3 16233.1 8770.8 9,090,027 0.0265 87.0%36.6
11 7821110 08-Sep-08 15-Sep-08 4.6918 4.4273 0.2645 16543.2 16379.3 9835.8 10,138,086 0.0261 97.6%36.4
12 7821104 15-Sep-08 22-Sep-08 4.7742 4.4412 0.3330 16710.6 16543.2 10045.2 10,353,921 0.0322 99.7%36.4
13 7820498 22-8ep-08 29-Sep-oB 4.9449 4.4180 0.5269 16879.8 16710.6 10149.0 10,460,912 0.0504 100.7%36.4
Totals 91 2184.0 4.826469 4.477808 0.3487 120429.6 125,336,489 0.1772 91.9%36.8
BHV-4 on stream %100.0%BHV-4 Tolal Volume:4.82E+06
Week Filter Start Stop Stop Start Total Total Loading,PerCent
#Number Date Dale Gross Tare Net Time Time Time Lilers mg/m3 On Stream SCFM
1 7821169 JO-Jun-08 07-Jul·08 4.7449 4.5647 0.1802 4675.3 4506.3 10137.6 10.477,868 0.0172 100.6%36.5
2 7821163 07.JuI·08 14·Jul-D8 4.8057 4.5562 0.2495 4844.3 4675.3 10142.4 10.626,429 0.0235 100.6%37.0
3 7821157 14-Jul-oB 21-Jul·08 4.6937 4.5275 0.1662 5007.7 4844.3 9804.6 10.272,508 0.0162 97.3%37.0
4 7821151 21-Jul·08 28-JuJ-D8 4.7682 4.5366 0.2316 5175.7 5007.7 10078.8 10,559,794 0.0219 100.0%37.0
5 7821145 28-Jul-OB 04-Aug-08 4.7092 4.5060 0.2032 5348.2 5175.7 10350.0 10,843,937 0.0187 102.7%37.0
6 7821139 04-Aug-08 11-Aug-08 4.6145 4.4621 0.1524 5511.7 5348.2 9810.0 10,278.166 0.0148 97.3%37.0
7 7821133 11-Aug-08 18-Aug-08 4.665B 4.4448 0.2210 5680.6 5511.7 10134.0 10,588,932 0.0209 100.5%36.9
8 7821127 18-Aug-08 25-Aug-08 4.7179 4.4986 0.2193 5846.6 5680.6 9963.0 10,410,256 0.0211 98.8%36.9
9 7821121 25-Aug-D8 01-Sep-Q8 4.6472 4.4234 0.2238 6038.4 5846.6 11508.6 12,025.240 0.0186 114.2%36.9
10 7821115 01-8ep-08 08-8ep-Q8 4.6081 4.4277 0.1804 6187.6 6038.4 8951.4 9,277,201 0.0194 88.8%36.6
11 7821109 08-Sep-08 15-Sep-08 4.6070 4.4409 0.1661 6352.1 6187.6 9866.4 10,169.626 0.0163 97.9%36.4
12 7821103 15-Sep-08 22-Sep-Q8 4.6485 4.4392 0.2093 6519.8 6352.1 10065.0 10,374,330 0.0202 99.9%36.4
13 7820497 22-Sep-08 29-Sep-Q8 4.6347 4.3916 0.2431 6690.5 6519.8 10243.2 10.558,007 0.0230 101.6%36.4
Totals 91 2184.0 4.681954 4.478408 0.2035 131055 136,462.293 0.0194 100.0%36.8
BHV·5 on stream %100.0%·BHV·5 Tolal Volume:4.82E+06
Wee!<Filter Start Slop Stop Start Total Tolal Loading,PerCenl
#Number Dale Date Gross Tare Net Time Time Time Ulers malm3 OnSlream SCFM
1 7821168 JO-Jun-08 07-Jul-08 4.8212 4.5582 0.2630 14937.5 14768.8 10123.2 10,462,984 0.0251 100-4%36.5
2 7821162 07-JuI-08 14-Jul-D8 4.8145 4.5644 0.2501 15106.7 14937.5 IOt49.6 10.633,973 0.0235 100.7%37.0
3 7821156 14.Jul-08 21-JuJ-08 4.7935 4.5424 0.2511 15271.0 15106.7 9858.0 10.328,457 0.0243 97.8%37.0
4 7821150 21-JuI-08 28-Jul-06 4.7224 4.5426 0.1796 15439.0 15271.0 10077.6 10,558,537 0.0170 100.0%37.0
5 7821144 28-Jul-D8 04-Aug-OB 4.7867 4.4738 0_3129 15611.4 15439.0 10344.0 10,837,650 0.0289 102.6%37.0
6 7821136 04-Aug-08 11·Aug·OB 4.6804 4.4811 0.1993 15774.8 15611.4 9805.2 10,273,137 0.0194 97.3%37.0
7 7821132 11-Aug-08 18-Aug-DB 4.8238 4.4612 0.3626 15943.7 15774.8 10134.6 10.589,559 0.0342 100.5%36.9
8 7821126 18-Aug-08 25-Aug-08 4.7718 4.5077 0.2641 16109.8 15943.7 9964.2 10,411,509 0.0254 98.9%36.9
9 7821120 25-Aug-08 01-8ep-08 4.7038 4.4355 0.2683 16301.9 16109.8 11529.6 12,047,183 0.0223 114.4%36.9
10 7821114 01-Sap-08 08-Sep-08 4.6153 4.4246 0.1907 16450.5 16301.9 8913.0 9,237,403 0.0206 88.4%36.6
11 7821108 08-Sep-08 15-Sep-08 4.6181 4.4320 0.1861 16614.7 16450.5 9852.0 10,154,784 0.01B3 97.7%36.4
12 7821102 15-Sep-Q6 22-Sep-08 4.7219 4.4552 0.2667 16782.4 16614.7 10064.4 10,373,712 0.0257 99.8%36.4
13 7820496 22-Sep-08 29-Sep·08 4.7333 4.3852 0.3481 16953.2 16782.4 10248.6 10.563,573 0.0330 101.7%36.4
Totals 91 2184.0 4.738977 4.481838 0.2571 7797800 131064 136.472,460 0.0244 100.0%36.8
Period:June 30,2008 through September29,2008 (3rd Quarter200B)Page 2
BHV-6 on stream %100.0%BHV-6 Total Volume:4.82E+06
cLoading,Per Cent
/
Total
U
Tolal
T'
Start
Ti
Stop
TiNeTG
Slop
D I
Start
01
Week Filler
Nmb#u er ae ae ross are I Ime Ime Ime 'Iers mQ/m3 OnSlream S FM
1 7821167 30·Jun-Q8 07-Jul-08 4.7945 4.5837 0.2108 14584.8 14416.0 10130.4 10,470,426 0.0201 100.5%36.5
2 7821161 07-Jul-08 14-Jul-08 4.7862 4.5842 0.2220 14754.0 14584.8 10149.6 10.633.973 0.0209 100.7%37.0
3 7821155 14--Jul-08 21-Jul-08 4.7567 4.5433 0.2134 14917.9 14754.0 9832.8 10.302.054 0.0207 97.5%37.0
4 7821149 21-Jul·08 28-Jul-08 4.6827 4.5392 0.1435 15085.8 14917.9 10075.8 10.556.651 0.0136 100.0%37.0
5 7821143 28-Jul'08 04--Aug-OB 4.6518 4.4426 0.2092 15258.6 15085.8 10366.2 10,860.910 0.0193 102.8%37.0
6 7821137 04-Aug-08 l1-Aug-08 4.6119 4.4980 0.1139 15421.5 15258.6 9777.6 10.244.220 0.0111 97.0%37.0
7 7821131 11-Aug·08 18-Aug-08 4.6763 4.4605 0.2158 15590.8 15421.5 10158.6 10.614.636 0.0203 100.8%36.9
8 7821125 18-Aug-08 26-Aug-08 4.6859 4.5073 0.1786 15756.5 15590.8 9937.8 10,383.924 0.0172 98.6%36.9
9 7821119 26-Aug-08 01-Sep-Q8 4.6173 4.4334 0.1839 15948.8 15756.5 11536.8 12.054,706 0.0153 114.5%36.9
10 7821113 01·Sep-DB 08-Sep·08 4.5828 4.4299 0.1529 16097,4 15948.8 8920.8 9,245.487 0.0165 88.5%36.6
11 7821107 08-Sep-08 15·Sep-DB 4.5941 4.4384 0.1557 16261.9 16097.4 9867.6 10,170.863 0.0153 97.9%36.4
12 7821101 15-5ep-08 22-5ep-08 4.6640 4.4588 0.2052 16429.7 16261.9 10066.2 10.375,567 0.0198 99.9%36.4
13 7820495 22·Sep-08 29-Sep·08 4.6417 4.4012 0.2405 16600.4 16429.7 10246.2 10.561,099 0.0228 101.6%36.4
Tolals 91 2184.0 4.672762 4.484854 0.1881 131066.4 136.474.515 0.0179 100.0%36.8
ALL SHVon stream %98.3%
Week
#Blanks
Start
Date
Stop
Date Net
1 7821166 3Q.Jun-DB 07-Jul-08 4.5624
2 7821160 07·Jul-08 14--Ju1-08 4.5631
3 7821154 14--Jul-Q8 21-Jul-08 4.5620
4 7821148 21-JuI-Q8 28-Ju~08 4.4395
5 7821142 28-Ju1-08 04--Aug-08 4.4350
6 7821136 04-Aug-08 11-Aug-08 4.4858
7 7821130 11-Aug-DB 18-Aug-08 4.4742
8 7821124 lB-Aug-08 25-Aug-08 4.4216
9 7821118 25-Aug·08 01-5ep·08 4.4371
10 7821112 01-Sep-DB DB-Sep-08 4.4371
11 7821106 0B-Sep-Q8 15-Sep-Oa 4.4311
12 7820800 lS·Sep-08 22-Sep-08 4.4000
13 7820494 22-360-08 29-Seo-08 4.3944
Totals 91 2184.0 4.4849
Period:September 29,2008 through December 29,2008 (4th Quarter2008)Page 1
,BHV-1 oilstream %100.0%BHV-1 Total Volume:5.19E+06
SCFM
Loading,PerCent
I 3 enSt
Total
L't
Total
T'
Start
T'
Stop
r
StopStartFilterWeek
#Number Date Date Gross Tare Ne Ime Ime me I ers mgfm ream
I 7820493 29-Sel'"08 6-0el-08 4.6307 4.4550 0.1757 6860.0 6690.0 10197.6 10,539,882 0.0167 101.2%365
2 7820487 06-0el-08 13-OcI-08 4.8234 4.4667 0.3567 7026.0 6860.0 9961.8 10,437,210 0.0342 98.8%37.0
3 7820481 13-0el-08 20-0cI-08 4.6105 4.4500 0.1605 7193.4 7026.0 10044.6 10,523,962 0.0153 99.6%37.0
4 7820475 20-0cl-08 27-0ct-08 4.6581 4.4784 0.1797 7362.0 7193.4 10II6.0 10.598,769 0.0170 1OQ.4%37.0
5 7820469 27-0cl-08 3-Nov-08 4.6800 4.4356 0.2444 7532.7 7362.0 10245.0 10,733,926 0.0228 101.6%37.0
6 7820463 03·Nov-08 IO-Nol'-08 4.5713 4.4263 0.1450 7697.9 7532.7 9909.0 10,381,891 0.0140 9B.3%37.0
7 7820457 10-Nov·OB 17-Nov-OB 4.5372 4.3971 0.1401 7868.8 7697.9 10256.4 10,716,827 0.0131 101.8%36.9
8 7820451 17-Nol'·OB 24-Nov-08 4.6155 4.3878 0.2277 8032.9 7868.8 9846.0 10,288,003 0.0221 97.7%36.9
9 7820445 24-Nov-08 I-Dec-08 4.5800 4.4375 0.1425 8202.7 8032.9 IOIB4.4 10,641,595 0.0134 101.0%36.9
10 7820439 OI-Dee·OB 8-Dec·08 4.5042 4.4212 0.0830 8373.6 8202.7 10256.4 10,629,698 0.0078 101.8%36.6
II 7820432 08·Dee·08 I6-Dec-08 4.6152 4.4281 0.1871 8537.7 8373.6 9843.0 10,145,507 0.0184 85.4%36.4
12 7820426 16-Dee-08 22-Dee·OB 4.4759 4.4213 0.0546 8708.8 8537.7 10269.0 10,584,600 0.0052 118.9%36.4
13 7820420 22·Dec-08 29-Dee-08 4.5134 4.4676 0.0458 8875.0 8708.8 9973.8 10,2BO,327 0.0045 98.9%36.4
14 7820414 29-Dee-08 5-]an-09 4.4576 4.3669 0.0907 9042.2 8875.0 10027.8 10,335,987 0.0088 99.5%36.4
TOlals 91 2184.0 4.601185 4.436354 0.1648 141130.8 136,502,196 0.0157 IOOA%36.8
BHV-2 on stream %100.1%BHV·2 Total Volume:5.19E+06
Week Filter Start Stop Slop Start Tolal Total Loading,PerCent
#Number Dale Date Gross Tare Net Time Time TIme lilers malm3 On Stream SCFM
1 7820492 29·Sep-08 6-0cl-08 4.8113 4.4600 0.3513 17050.9 16879.8 10269.0 10,613,678 0.0331 101.9"10 36.5
2 7820486 06·0ct-08 I3-OcI-08 4.9449 4.4688 0.4761 17216.8 17050.9 9952.2 10,427,152 0.0457 98.7%37.0
3 7820480 H-OcI·08 20-OcI-08 4.8614 4.4515 0,4099 17384.2 17216.8 10045.8 10,525,219 0.0389 99.7%37.0
4 7820474 20-OcI-08 27-OcI-08 4.9329 4.4654 0.4675 17552.8 17384.2 10112,4 10.594,997 0.0441 100.3%37.0
5 7820468 27-0cl·08 3-Nov-08 5.0146 4.3992 0.6154 17722.9 17552.8 10206.0 10,693,064 0.0576 101.3%37.0
6 7820462 OJ-Nov-08 10-Nov-08 4.7496 4.4273 0.3223 17889.3 17722.9 9985.2 10,461,727 0.0308 99.1%37.0
7 7820456 IO-Nov-08 17-Nov-08 4.7340 4.4118 0.3222 18059.2 17889.3 10194.0 10,651,626 0.0302 101.1%36.9
8 7820450 17-Nov-08 24-Nov-08 5.1022 4.3979 0.7043 18223.6 18059.2 9863.4 10,306.184 0.0683 97.9%36.9
9 7820444 24-Nov-08 I-Dee-08 4.7154 4.4231 0.2923 18393.5 18223.6 10196.4 10.654,133 0.0274 101.2%36.9
10 7820438 01-Dec-08 8-Dee-08 4.6350 4.4348 0.2002 18563.9 18393.5 10223.4 10.595.497 0.0189 101.4%36.6
11 7820431 08-Dec-08 I6-Dec-08 4.6900 4.4372 0.2528 18731.0 18563.9 10027.8 10,335,987 0.0245 87.0%36.4
12 7820425 I6-Dec·08 22-Dee-08 4.4754 4.4172 0.0582 18899.1 18731.0 10084.2 10,394,120 0.0056 116.7%36.4
13 7820419 22·Dec-08 29·Dee·OB 4.5089 4.4576 0.0513 19065.1 18899.1 9960.0 10,266,103 0.0050 98.8%36.4
14 7820413 29-Dec-08 5-Jan-09 4.5235 4.3970 0.1265 19233.0 19065.1 10072.8 10,382,370 0.0122 99.9%36.4
Tolals 91 2184.0 4.782738 4.434754 0.3480 141192.6 136,519,488 0.0331 100.4%36.8
BHV-4 on slream %99.7%BHV-4 Total Volume:4.81E+06
Week Filter Start Stop Stop Start Total Total Loading,PerCent
#Number Date Date Gross Tare Net Time Time Time liters malm3 On Stream SCFM
1 7820491 29-Sep-08 6-0el-08 4.6470 4.4558 0.1912 6860.8 6690.5 10217.4 10,560.346 0.0181 101.4%36.5
2 7820485 06-0cl-08 13-0cl-08 4.8277 4.4781 0.3496 7024.3 6860.8 9809.4 10,277,537 0.0340 97.3%37.0
3 7820479 13-0cl-08 20-OcI-08 4.6900 4.4528 0.2372 7194.9 7024.3 10232.4 10,720,724 0.0221 101.5%37.0
4 7820473 20-0cl-08 27-0cI-08 4.7113 4.4719 0.2394 7359.1 7194.9 9851.4 10,321,542 0.0232 97.7%37.0
5 7820467 27-0cl-08 3-Nov-08 4.6853 4.4146 0.2707 7532.1 7359.1 10383.6 10,879,140 0.0249 103.0%37.0
6 7820461 03-Nov-08 IO-Nov-08 4.5290 4.4263 0.1027 7695.3 7532.1 9788.4 10,255,535 0.0100 97.1%37.0
7 7820455 IO-Nov-08 17-Nov-08 4.5569 4.4210 0.1359 7868.0 7695.3 10363.8 10,829,048 0.0125 102.8",1,36.9
8 7820449 17-Nov-08 24-Nov-08 4.6119 4.4028 0.2091 8032.6 7868.0 9874.8 10,318,096 0.0203 98.0%36.9
9 7820443 24-Nov-08 (-Dee-08 4.4885 4.4114 0.0771 8203.5 6032.6 10255.8 10,716,200 0.0072 101.7%36.9
10 7820437 OI-Dee-08 8-Dee-OB 4.5161 4.4322 0.0839 8367.0 8203.5 9808.2 10,165,185 0.0083 97.3%36.6
11 7820430 08-Dee-08 16-Dec-08 4.5951 4.4483 0.1468 8532.1 8367.0 9908.4 10,212,917 0.0144 86.0%36.4
12 7820424 16-Dec-08 n-Dec-08 4.4874 4.4185 0.0689 8702.4 8532.1 10221.0 10,535,124 0.0065 118.3%36.4
13 7820418 22-Dee-08 29-Dec-08 4.3825 4.3478 0.0347 8868.9 8702.4 9985.2 10,292.077 0.0034 99.1%36.4
14 7820412 29-Dee-OB 5-Jan-09 4.4816 4.4004 0.0812 9037.6 8868.9 10122.6 10,720,340 0.0076 100.4%37.4
Totals 91 2184.0 4.594515 4.429346 0.1652 130699.8 136,083,473 0.0158 100.1%36.8
BHV-5 on stream %99.7%BHV·S Total Volume:5.18E+06
Loading,PerCentTotalTotalStart
Ti
Stop
T
Stop
Da
Start
D t
Week Filter
#N beumr ae Ie Gross Tare Net ime Ime TIme Liters malm3 On Stream SCFM
1 7820490 29-SeJ>-08 6-Ocl-08 4.6842 4.4426 0.2416 17123.3 16953.2 10205.4 10.547.943 0.0229 101.2%36.5
2 7820484 06-OcI-08 l3-0ct-08 4.8996 4.4512 0.4484 17287.4 17123.3 9843.6 10.313.369 0.0435 97.7%37.0
3 7820478 13-0ct-08 20-0cl·08 4.7341 4.4715 0.2626 17457.3 17287.4 10195.8 10,682,378 0.0246 101.1%37.0
4 7820472 20-0ct-08 27-0ct-08 4.8089 4.4719 0.3370 17621.7 17457.3 9861.6 10,332,228 0.0326 97.8%37.0
5 7820466 27-OcI-08 3-Nov-08 5.0185 4.4094 0.6091 17794.5 17621.7 10371.0 10.865,939 0.0561 102.9%37.0
6 7820460 03-Nol'-08 IO·Nov-08 4.6035 4,4109 0.1926 17958.3 17794.5 9828.6 10,297,654 0.0187 97.5%37.0
7 7820454 IO-Nov-08 I7·Nov-08 4.4319 4.4102 0.0217 18131.2 17958.3 10370.4 10,835,944 0.0020 102.9%36.9
8 7820448 J7-Nol'-08 24-Nov-08 4.4142 4.4103 0.0039 18295.2 18131.2 9843.6 10,285,495 0.0004 97.7%36.9
9 7820442 24-Nov-08 !-Dee-08 4.4263 4.4236 0.0027 18465.8 18295.2 10237.8 10,697,392 0.0003 101.6%36.9
10 7820436 01-Dee-08 8·Dec-{)8 4.5802 4.4277 0.1525 18629.2 18465.8 9804.0 10,160,832 0.0150 97.3%36.6
11 7820429 08·Dee-08 16-Dec-08 4.6437 4.4393 0.2044 18793.8 18629.2 9874.8 10,178,285 0.0201 85.7%36.4
12 7820423 16.Dec-08 n-Dce·08 4.5232 4.4328 0.0904 18964.2 18793.8 10219.8 10,533,887 0.0086 118.3%36.4
13 7820417 22-Dee-08 29-Dec-08 4.4176 4.3359 0.0817 19130.4 18964.2 9976.8 10.283,419 0.0079 99.0%36.4
14 7820411 29·Dee-08 5·]an·09 4.5540 4.3972 0.1568 19299.0 19130.4 10114.2 10,711,444 0.0146 100.3%37.4
Totals 91 2184.0 4.629685 4.425946 0.2037 140747.4 136.014,767 0.0194 100.0%36.8
Period:'September29,2008 through December 29,2008 (4th Quarter 2008)Page 2
BHV-li on stream %99.7%BHV·6 Total Volume:5,18E+06
scLoading,PerCent
o S
Total
L'
Total
T'
Slart
T'
Stop
T'T
StopStartWeekFilter
#Number Date Date Gross are Net ,me 'me ,me .tars mqlm3 n tream FM
1 7820489 29-Sep-08 6-0c\-08 4.6461 4.4750 0.1711 16770.7 16600.4 10213.8 10,556,625 0.0162 101.3%36.5
2 7820483 06-0cl-08 13-Oct-08 4.7721 4.4430 0.3291 16934.2 16770.7 9813.6 10.281,938 0.0320 97.4%37.0
3 7820477 l3-Oct-08 20-Ocl-08 4.6518 4.4604 0.1914 17104.6 16934.2 10223.4 10,711.295 0.0179 101.4%37.0
4 7820471 20·0ct·08 27-OcI-08 4.6855 4.4613 0.2242 1.7269.0 17104.6 9860.4 10,330,971 0.0217 97.8%37.0
5 7820465 27-Oct-08 3-Noy-08 4.7254 4.4275 0.2979 17441.9 17269.0 10378.8 10,874,111 0.0274 103,0%37.0
6 7820459 03-Nov-08 IO-Nov-08 4.5410 4.4180 0.1230 17605.2 17441.9 9796.2 10,263,707 0.0120 97.2%37.0
7 7820453 IO-Nov-08 17-Noy-08 4.5673 4.4188 0.1485 17778.3 17605.2 10383.0 10,849,110 0.0137 103.0"10 36.9
8 7820447 l7·Nov-08 24·Noy-08 4.6160 4.4146 0.2012 17942.6 17778.3 9858.6 10,301,169 0.0195 97.8%36.9
9 7820441 24-Nov-08 I·Dec-08 4.5300 4.4146 0.1154 18113.4 17942.6 10248.0 10,708,050 0.0108 101.7%36.9
10 7820435 01-Dec-08 8-Dec-08 4.5466 4.4217 0.1249 18277.3 18113.4 9834.6 10,192,546 0.0123 97.6%36.6
11 7820428 08-Dec·08 16-Dec-08 4.6457 4.4413 0.2044 18442.1 18277.3 9888.6 10,192,509 0.0201 85.8%36.4
12 7820422 16-Dec-08 22-Dec-08 4.5146 4.4433 0.0713 18612.4 18442.1 10219.2 10,533,269 0.0068 118.3%36.4
13 7820416 22-Dec-08 29-Dec-08 4.4403 4,3669 0.0734 18778.7 18612.4 9976.8 10,283,419 0.0071 99.0%36.4
14 7820410 29-Dec-08 5-J.n-09 4.5228 4.3874 0.1354 18947.5 18778.7 101262 10,724,153 0.0126 100.5%37.4
Totals 91 2184.0 4.606338 4.431277 0.1751 140821.2 136,078,719 0.0167 100.1%36.8
ALL BHV on stream %99.9%
Week
#Blanks
Start
Date
Stop
Date Net
1 7820488 29-Sep-08 6-0ct-08 4.4857
2 7820482 06·0ct-08 13-OcI-08 4.4415
3 7820476 13·0cI-08 20-0ct-08 4.4852
4 7820470 20-0ct-08 27-Ocl-08 4.4507
5 7820464 27-0cl·08 3-Nov-08 4.4172
6 7820458 03-Noy-08 IO-Nov-08 4.4050
7 7820452 IO-Nov-08 17-Nov-08 4.4022
8 7820446 17-Nov-08 24-Nov-08 4.4200
9 7820440 24-Noy-08 I-Dec-08 4.4306
10 7820433 Ol-Dec-OB B-Dec-08 4.4083
11 7820427 08-Dec-08 16-Dec-08 4.4230
12 7820421 16-Dec-08 22-De",,08 4.4525
13 7820415 22-Dec-OB 29-Dec-08 4.3768
14 7820409 29-Dec-08 5-J.n-09 4.4014
Totals 91 2184.0 4.4307
Attachment D
DENISON MINES
ATTN;CHRISTY WOODWARD
1050 17TH STREET SUITE 950
DENVER.co 80265
Radon Monitoring Report
Acct.No.I (140998S I
LANDAUER
Landauer,Inc.2 Science Road Glenwood,Illinois 60425-1586
Telephone:[phone] Facsimile:[phone]
***CORRECTED REPORT ***
®
11OF'
1.0
0.6
0.4
0.6
0.5
PAGE
(j)
*0.08
Avg_RadonCone.pCill
28.0
44.7
76.2
35.7
47.0
;~[)f~~~~
'*c..O
Report Date
~3-JUL-Oa
Field Data I Comments
BHV 4,SOUTHWEST CORNER
o@
BHV6,SOUTHWEST HWY 191
13HV 5,SOUTH'MAIN'ENTRANCE
*-·LESS THAN INDICATED VALUE'BLACK.MESA .
02-MAV-08 I 14-JUL-08 I~S'~';~HIRTAIL ROAD
OZ-MAY-08 I 14-JUL-08 ':BHV"l,-WEATHER STATION
en
Detector Starting I EndingTypeDateDate
DRN OZ-MAY-Oa 14-JUL-Oa
DRN 02-t1AY;"08 14-JUL-08
DRN 02-MAY-OS 14-,JUL-·08
DRN 02-MAV-Oa 14-,JUL-Oe
DRN
DetectorNumber
":1J:t~1ao
cD
?47'zSi482
.,:i
.'~'t:~~4a 1
t:~OJlei()r'o rljG ()rt il't:()r~f~(;.i Reg)(Jrt.......1 ~
DENISON IVIIl'~ES
64-.2'5 SOUTH HIGHl,jAV 191
PO BO)-(801?
BLANDING.UT 84511
t\(~ctn r.\:J.()~0409988
LAJ'JDAUER
l,:,"(\nu,'f,1m:,2 :'!CiC'K~Rond Glenwood,Illinois 60425.1586
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14-,JUL-08
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Landauer,Lnc.2 Science Road Glenwood,
Telephone:[phone] Facsimile:
®
Exposure
pCI/I-days
®
Acct.No.1 .0409988 I
Radon Monitoring Report
@
;_Endlng
Date
®
StartingDate
06-0CT-08
06-0CT-oe
.06-QCT-OS'
06-0CT-·Oe
06-0CT....OBI OS~,JAN"'CCl9
IO~.".OCT.".08
®CD
---·---------~-\;.~'='"vo (1"v~.~F"~l·~...""C"lT:'V'D-~~,·'tT-0',.'·...,.~.\·r~','Q'~~n'7""·--4_'._'___.-..:..-
Attachment E
~Ql
I ~3........N W V10000000 3Ql
m)(
3G-Jun-82 "C0III·Apr·83 c:....
03·Jan-84 III
~Ql2-Qet·84 .-+IIIIIIOS-Jul-8S OJ.-+
22·Apr·86 »:::;'
3·Feb·87 V'lQl
-Qet·87 3
"E.
15·Jul·88 :;'
O'Q
8-May·89 V'l.-+Ql
l8-Jan-90 .-+0'
01-Qet·90 ;:,
III
01-Jul-91 -3....
o-Apr-92 III304-Jan-93 -
OS-Qet-93
ll-Jul-94
ll-Apr-9S
16-Jan-96
lD-Oet·96
08-Jul·97
9-Apr-98
22-Jan·99
12-Qet·99
21-Jul.QO
Q-Apr-01
28-Jan-02
lS-Qet-02
10-Jul-03
l-Apr-04
11-Jan-oS
17-Qet-oS
12-Jul-06
18-Apr-07
31-Dec-07
2-Qet-08
+t ++QJ QJ QJ QJ QJ
:I::I::I::I::I:
<<<<<
I I ~I ,
W V1 N ....
I
White Mesa Mill Third Quarter 2008 Environmental Spherical Gamma Monitor Resu
Mean
Total Days Ambient
Badge Date Date Badge at Dose mRem/mRem/
Number Location Issued Returned WMM Equivalent hour Day
Control Administration Vault 7/9/2008 10/2/2008 85 32.5 0.02 0.382
1 V205 Control Room 7/9/2008 10/2/2008 85 55.5 0.03 0.653
2 BHV-6 7/9/2008 10/2/2008 85 27.4 0.01 0.322
3 Ore Stor.-Molycorp Area 7/9/2008 10/2/2008 85 296.3 0.15 3.486
4 Vanadium Precip.Area 7/9/2008 10/2/2008 85 62.4 0.03 0.734
5 Yellocake DryingArea 7/9/2008 10/2/2008 85 114.4 0.06 1.346
6 Leach 7/9/2008 10/2/2008 85 180.4 0.09 2.122
7 SAG Mill Control Room 7/9/2008 10/2/2008 85 306.6 0.15 3.607
8 Yellowcake Precip.7/9/2008 10/2/2008 85 102 0.05 1.200
9 Central Control Room 7/9/2008 10/2/2008 85 63 0.D3 0.741
10 Trammel Screen (ore pad)7/9/2008 10/2/2008 85 263.5 0.13 3.100
11 Barrel Dumping Station 7/9/2008 10/2/2008 85 331.2 0.16 3.896
12 Met.Lab 7/9/2008 10/2/2008 85 57.4 0.D3 0.675
13 FilterPress Room 7/9/2008 10/2/2008 85 156.6 0.08 1.842
14 BHV-I 7/9/2008 10/2/2008 85 31.7 0.02 0.373
15 BHV-2 7/9/2008 10/2/2008 85 29.5 0.01 0.347
16 BHV-3 7/9/2008 10/2/2008 85 30.2 0.01 0.355
17 BHV4 7/9/2008 10/2/2008 85 30.2 0.01 0.355
18 BHV-5 7/9/2008 10/2/2008 85 29.5 0.01 0.347
19 SAG Mill 7/9/2008 10/212008 85 206.6 0.10 2.431
20 Tails 7/9/2008 10/2/2008 85 74.5 0.04 0.876
21 CCD 7/912008 10/2/2008 85 65.3 0.03 0.768
22 North SX 7/9/2008 10/2/2008 85 60.9 0.03 0.716
23 Administration Building 7/9/2008 10/2/2008 85 34.2 0.02 0.402
24 Admin Parking Lot 7/9/2008 10/2/2008 85 96.3 0.05 1.133
25 Yellowcake Packaging 7/9/2008 10/2/2008 85 1397.7 0.69 16.444
26 Yellowcake Storage 7/9/2008 10/2/2008 85 249.7 0.12 2.938
27 Bucking Room 7/9/2008 10/2/2008 85 106.8 0.05 1.256
28 Mill Lunch Room 7/9/2008 10/2/2008 85 62.5 0.03 0.735
29 South SX 7/9/2008 10/2/2008 85 109.8 0.05 1.292
30 Mtce.Super.'s Office 7/9/2008 10/2/2008 85 44.2 0.02 0.520
31 Ore Feed Grizzly 7/9/2008 10/2/2008 85 306.7 0.15 3.608
32 Scalehouse 7/9/2008 10/2/2008 85 237.8 0.12 2.798
33 Sample Plant (OBS)7/9/2008 10/212008 85 276.1 0.14 3.248
34 Front Gate 7/9/2008 10/2/2008 85 176.8 0.09 2.080
35 Arizona I Travel Way 7/912008 10/27/2008 110 34.2 0.01 0.311
36 Arizona I Travel Way 7/9/2008 10127/2008 110 30.7 0.01 0.279
37 Arizona 1 Travel Way 7/9/2008 10127/2008 llO 33.7 0.01 0.306
38 Arizona 1 Travel Way 7/9/2008 10/27/2008 llO 30.6 0.01 0.278
39 Arizona I Travel Way 7/9/2008 10/27/2008 110 34.8 om 0.316
40 Arizona I Travel Way 7/9/2008 10/2712008 110 36.2 om 0.329
41 Arizona I Travel Way 7/9/2008 10/27/2008 110 31.3 0.01 0.285
Attachment F
Ra-226 Concentrations In Vegetation (uCi/Kg)
1.00E-02 I I
I1.00E-03 ..."_.....
1.00E-04 II .11 I~J "III ,:"\w 1L ,'1{Hf Ill.7"'....•J \"...r.\::w.~..,....,11..
-•~1.00E-05 I \I ,t \l \"'"I I I \"'~:.1-.1 -\ \I'"l I
J-
1.00E-06 I In ~-.--I
1.00E-07 I I I
1.00E-08Iii iii I I
'"n-~_Ilr.~!O ~R>~~'"n,!!>_Ilr.b !O ~R:l ~~'"(\,!!>_Ilr.b !O ~R:lo.,CO o.,CO o.,CO o.,'tf.0.,'6 0.,'8 o.,CO 0.,'6 0.,'6 0.,03 o.,c?>C?>C?>o.,c?>c?>~.c?>'?>c?>03 C?>C?>c?>OJ o.,'?>~<:s ~~~~~~~IJ .~~~<:s ~~~(S~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I -+-Ser!es1 -series21-'-Senes3
Pb-210 Concentrations In Vegetation (uCi/Kg)
1.00E-02
1.00E-03
1.00E-04
-•~01.00E-05g-....-
1.00E-06
1.00E-07
1.00E-08
"a,~_lIr.h ~~~Q>~"a,~b<h !O ~~Q>~"a,~b<b !O ~~~~~~.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I -+-Ser!es1 -series21-'-Senes3
ENERGYLABORATORIESr INC••2393 SaIl CreekHighway(82601)•P.Q Box 3258 •Casper,WY82602Il/{gBlfjY lOllFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com
L.4110UA 70RlE5
LASORATORY ANALYTICAL REPORT
Client Denison Mines (USA)Corp
Project:Vegetation
Lab 10:C08120574·001
ClientSample 10:South West
Report Date:01/17/09
Collection Date:12/12/08
DateReceived:12/16/08
Matrix:Vegetation
MCU
Analyses Result Units Qualifiers RL Qel Method Analysis Date f By
RADIONUCLIDES •TOTAL
lead 210 4.1E-04 uCi/kg E909.0M 01/05/09 17:00/dm
lead 210 precision (:I:)3.0E-05 uCilkg E909.0M 01/05/09 17:00 /dm
Lead 210 MDC 4.0E-05 uCilkg E909.0M 01/05/09 17:00 /dm
Radium 226 9.2E-05 uCilkg E903.0 01/06/09 01:32/Irs
Radium 226 precision (:1:)4.1E-06 uCilkg E903.0 01/00/0901:321 Irs
Radium 226 MDC 9.6E·07 uCVkg E903.0 01/00/09 01:32/Irs
Report
Definitions:
Rl.Analyle reporting limit.
QCL -Quality control limit.
MDC •Minimum detectable concentration
MCl -Maximum contaminant level.
NO -Not detected at the reporting limit.
P!ENERGYLABORATORIES,INC.•2393SaltCreekHighway (82801)•P.O.Box3258 •Casper,WY82602Itlgllf{9V Tolf Free 888.235.0515 •301.235.0515 •Fax [phone] •[e-mail] •www.energylab.com
A'Uilll'li#""
LA80RATORY ANALYTICAL REPORT
Client:Denison Mines (USA)Corp
Project Vegetation
Lab 10:C08120574-001
Clie~t Sample 10:South West
Report Date:01117/09
Collection Date:12/12108
DateReceived:12/16/08
Matrix:Vegetation
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date /By
RADIONUCLIDES -TOTAL
Lead 210 412 pCilkg E909.0M 01/05109 17:00 /dm
Lead 210 precision (t)30.0 pCilkg E909.OM 01/05109 17:00/dm
Lead 210MOC 40.3 pCilkg E909.0M 01/05109 17:00/dm
Radium 226 92.3 pCilkg E903.0 01/0610901:32/trs
Radium 226 precision (±)4.1 pCilkg E903.0 01/06/09 01:32/trs
Radium 226 MDC 0.96 pCilkg E903.0 01/06/09 01 :32/trs
----------------------------,-----------_._-------
Report
Definitions:
RL -Analyte reporting limit.
QCL -Quality conlrollimil.
MDC -Minimum detectable concentration
Mel -Maximum contaminanllevef.
NO -Not detected at the reporting limit.
1dY~ENERGYLABORATORIES"NC.·2393SaltCreekHighway(82800·P.O Box3258'Casper,WY82802'=.!""';(({fJ.TollFree888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com
LABORATORY ANALYTICAL REPORT
Client:Denison Mines (USA)Corp
Project:Vegetation
Lab 10:C08120574·003
ClientSample 10:North East
Report Date:01/17109
Collection Date:12112108
OateReceived:12116/08
Matrix:Vegetation
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date I By
RADIONUCLfDES •TOTAL
Lead 210 3.6E-04 uCilkg E9og.0M 01105/09 17:00I dm
Lead 210 precision (tl 2.9E-05 uCilkg E909.0M 01/05/09 17:00 I dm
Lead 210 MDC 3.9E-05 uCilkg E909.0M 01105/09 17:00I dm
Radium 226 1.5E-Q4 uCilkg E903.0 01/06/0901:321trs
Radium 226 precision (tl 5.2E-Q6 uCi/kg E903.0 01/0610901:321trs
Radium 226 MDC 9.9E-07 uCi/kg E903.0 01/06/0901:321trs
~---~-----------_._.~----
Report
Definitions:
RL •Analyte reporting limit.
QCL -Quality control limit.
MDC •Minimum detectable concentration
MeL -Maximum contaminant Jevel.
ND -Not detected at the reporting limit.
~W ENERGYLABORATORIES,INC.•2393 Salt CreekHighway (82801)•PD.Box 3258 •Casper,WY826021M/;;{(TollFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail] •www.energylab.com
LABORATORYANALYnCALREPORT
Client:Denison Mines (USA)Corp
Project Vegetation
Lab 10:C08120574-003
Client Sample 10:North East
Report Date:01/17/09
Collection Date:12/12108
DateReceived:12/16108
Matrix:Vegetation
MCU
Analyses Result Units Qualifiers Rl Qel Method Analysis Date I By
RADIONUCUOES •TOTAL
lead210 357 pCilkg E909.0M 01/05109 17:00 I dm
lead 210 precision (±)28.5 pCilkg E909.0M 01/05109 17:00/dm
lead 210 MDC 38.9 pCilkg E909.0M 01/05109 17:00 /dm
Radium 226 145 pCilkg E903.0 0110610901:32/trs
Radium 226 precision (±)5.2 pCilkg E903.0 0110610901:32/Irs
Radium 226 MDC 0.99 pCilkg E903.0 01/06/0901:32 firs
Report
Definitions:
Rl·Analyte reporting limit.
QCl•Quality control limit.
MDC •Minimum detectable concentration
Mel·Maximum contaminant level.
ND -Notdetected at the reporting limit.
,,,.:+JIlt .F~~ENERGYLABORATORIES,INC••2393SaltCreekHighway(82601)'P.O.Box3258 •Casper,WY82602.",~.q\".TOilFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com
LAl/ORATORIES
LABORATORY ANALYTICAL REPORT
Client:Denison Mines (USA)Corp
Project:Vegetation
Lab 10:C08120574-002
Client Sample 10:North West
Report Date:01117/09
Collection Date:12112108
OateReceived:12116108
Matrix:Vegetation
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis DateI By
RA010NUCLIDES -TOTAL
lead 210 4.4E-04 uCilkg E909.0M 01105109 17:00 Idm
lead 210 precision (t)2.5E-DS uCilkg E909.0M 0110510917:00 I dm
lead 210 MDG 3.2E-DS uCilkg E909.0M 01105109 17:00 Idm
Radium 226 7.3E-DS uCilkg E903.0 0110610901 :321 trs
Radium 226 precision (i)3.2E-06 uCilkg E903.0 0110610901 :32/trs
Radium 226 MDC 7.4E-07 uCilkg E903.0 0110610901:32/trs
Report
Definitions:
Rl-Analyte reporting limit.
QCl•Quality control limit.
MDC -Minimum detectable concentration
Mel -Maximum contaminant level.
ND -Not detected at the reporting limit.
ENERGYLABORATORIES,INC.•2393SaltCreekHighway(82601)•P.o.Box3258 •Casper,WY82602
lOllFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail] •www.energylab.comIifIlM7-------------------------------~
LABORATORY ANALYTICAL REPORT
Client:Denison Mines (USA)Corp
Project:Vegetation
Lab 10:C08120574-002
ClientSample 10:North West
Report Date:01/17109
Collection Date:12112108
Date Received:12/16108
Matrix;Vegetation
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date /By
RADIONUCLIDES -TOTAL
Lead 210 435 pCilkg E909.0M 01105109 17:00/dm
Lead 210 precision (:1:)25,3 pCilkg E909.0M 01/05109 17:00 Idm
Lead 210MDC 32.0 pCilkg E909,OM 01105/09 17:00/dm
Radium 226 72.7 pCilkg E903,0 01106/09 01:32 IIrs
Radium 226 precision (t)3.2 pCilkg E903.0 01106109 01:32 I Irs
Radium 226 MDC 0.74 pCilkg E903.0 01106/09 01:32 Itrs
Report
Definitions:
RL -Analyte reporting limit.
QCL -Qualitycontrol limit.
MDC -Minimum detectable concentration
Mel-Maximum contaminant level.
ND -Not detected at the reporting limit.
INTERNATIONAL URANIUM CORP.
WHITE MESAMILL
FORAGERADIONUCLIDE DATA
SOUTH WEST OF MILL
Ra-226 Ra-226 LLO Pb-210 Pb-210
LLO iiSAMPLEDVALUEERRORuCilKgVALUEERRORuCilKg
DATE uCi/K9 uCi/K9 S.OE-Q8 uCVK9 uCilKg 1.OE-06
I 27-Auo-81 9.S0E-04 2.0E-05 5.0E-D8 1.50E-D4 LOE·05 LOE-D6
I 21-ocl-81 3.00E-D5 3.0E-D6 5.0E-D8 1.50E-D4 2.0E-D5 1.0E-D6
15-Aor·82 1.37E-05 3.0E-D6 3.0E-D6 3.80E-D4 4.0E-05 4.0E-05
01-Jul-82 3.40E-04 2.0E-OS 5.OE-08 3.68E-Q3 2.7E-04 1.0E-07
30-Nov-82 1.75E-OS 3.0E-06 2.0E-Q6 7.92E-D4 4.0E-06 2.0E-OS
14-Aor-83 7.13E-04 7.3E-05 9.0E-D8 2.51E-03 3.0E-04 3.0E-D4
01-Jul-83 5.39E-05 4.5E-06 2.0E-1l6 6.88E-D4 4.3E-05 4.0E-1l5
30-Jan-84 6.40E-1lS 7.0E-06 4.0E-D6 1.20E-D3 1.0E-04 4.0E-1lS
28-Jun-84 8.27E-QS 6.3E-Q6 3_0E-D9 L80E-Q3 1.0E-04 9.0E-QB
l4-Nov-B4 2.72E-1l4 1.5E-04 2.0E-D7 4.70E-03 7.2E-04 3.0E-07
27-Mar-85 4.73E-Q4 1.6E-07 3.0E-D6 7.07E-04 3.6E-D5 3.0E-1l5
15-Jul-85 6.BOE-Q5 7.0E-OB 4.0E-1l6 4.90E-D4 3.0E-DS 3.0E-Q5
09-Dct-8S 2.B3E-Q4 2.0E-Q5 7.0E-D6 1.50E-Q3 1.0E-Q4 7.0E-QS
24-Mar·86 1.57E-Q4 1.0E-05 4.0E-QS 4.l4E-D3 1.8E·04 3.0E·OS
I 10·JuJ·8B 3.78E.o4 1.0E-05 2.0E-OB 1.65E.o2 7.0E-04 LOE-04
l8·Dec-8B 2.BOE-Q4 2.0E-05 2.0E-OB 1.70E.o3 1.0E-04 LOE-04
20-ADr-87 4.10E.o4 7.0E-Q5 5.0E-D8 2.20E.o3 1.0E-04 1.0E-OS
OS-Jun-87 2.90E-Q4 4.0E-QS 5.0E-D8 7.50E-D4 S.OE-QS 1.OE-OB
22-0ec-87 1.80E-Q4 3.0E-OS 5.0E-Q8 2.40E-03 1.0E-04 LOE-OB
19-Aor-88 2.30E.o4 5.0E.o5 5.0E-08 2.90E-1l3 1.0E-04 LOE-OB
28-Jul-88 L50E.o4 3.0E-05 5.0E-D8 4.30E-03 2.0E-04 LOE-OB
07-Aor-89 3.l0E.o4 4.0E.o5 -4.20E-03 1.0E-04 -OS-Jun-89 1.30E-Q4 2.0E-OS -1.50E-Q3 1.0E-Q4 -07-Nov-89 4.30E-Q4 S.OE-05 1.4E-05 3.50E-03 l4E-04 2.7E-OS
28-Mar-90 2.S0E.o4 3.0E-1lS 5.0E-QS 2.39E-03 S.OE-05 2.5E-05
13-Jun-90 1.10E-1l4 2.0E-1lS 5.0E-1l8 S.SOE-04 3.0E-1l5 1.0E-1lS
23-Dct-90 S.10E-OS l.4E-1lS S.OE-1l8 S.10E-Q4 3.0E-D5 loDE-OS
10-ADr-9l 3.40E-05 1.1E-05 5.0E-06 2.20E-04 1.0E-Q5 1.0E-06
1l-Jun-91 8.00E-05 ME-OS 2.0E-07 1.20E-D4 1.0E.o5 2.0E-07
2O-Nov-91 S.SOE-05 L4E.o5 5.0E-08 9.10E-1l4 5.0E-1l5 1.0E-OS
22-Aor-92 1.S0E-1lS 7.0E.oS 2.0E.oS 3.20E-C4 2.0E-1l5 1.0E-05
10-Jun-92 L90E-OS 1.0E-05 2.0E-Q7 2.20E-D4 2.0E-QS LOE-06
08-Dec-92 LSOE-C5 1.8E.o5 3.0E-OS 7.60E-04 6.0E.o5 2.0E-OS
13-Aor-93 2.80E-C5 2.0E.o5 3.0E-OS 3.40E-04 3.0E.o5 2.0E-05
27-Jun-93 3.00E-D5 1.4E-05 3.0E.oS O.OOE+OO 3.0E.o5 2.0E-05
27-0cl-93 3.l0E-05 1.6E.o5 3.0E-OS 4.20E-04 S.OE.o5 2.0E-05
01-May-94 2.00E-05 S.OE-Q6 3.0E-QS 3.90E-D4 8.0E-QS 2.0E-04
19-Jul-94 1.75E-05 1.7E-06 7.6E-08 1.30E-04 7.8E-OS 3.8E-Q7
--JJ'~.Nov-94 1.00E-04 9.0E-OS 1.5E-07 2.S0E-D4 L2E.o5 7.4E-Q7
05-ADr-95 1.70E-05 1.5E-OS 1.6E-Q7 1.S0E-D4 1.5E-Q5 8.1E-07
07-Jul-95 6.40E-Q6 6.0E-07 1.4E-07 4.40E-OS 4.2E-OS 7.0E-Q7
09-Nov-95 2.30E-05 2.2E-06 1.7E-07 6.60E-05 9.6E-06 8.3E-07
24-ADr-9S 4.20E-05 2.2E-Q6 1.7E-07 1.00E-04 6.7E-Q6 1.8E-07
31-Jul-96 ....
l4-Nov-9S 2.l0E.oS 2.0E-OS 1.6E.o7 1.90E-04 7_3E-06 8.2E-07
2l-ADr-97 S.50E-06 4.2E-Q7 1.4E-Q7 3.30E-OS 3.9E-06 7.0E-07
05-S0D-97 5.30E-06 3.2E·07 1.3E·07 1.90E·OS 6.9E-07 6.3E·07
20-Nov-97 2.50E-05 9.5E-07 5.9E-07 1.30E-04 4.7E-06 1.2E-07
26-Mar-98 <7.90E-05 7.9E-05 7.9E-05 <3.90E-04 3.9E-04 3.9E-04
16-Jun-98 3.60E.o7 1.4E-07 3.3E-08 <1.7E-07 1.7E-07 1.7E-07.
09-NDV-98 4.30E-QS 1.0E-06 7.6E-08 2.S0E·04 1.OE-QS 3.8E-07 I
lS·ADr-99 2.40E-OS 1.0E-06 1.2E-07 1.70E-04 8.0E-06 S.2E-07
07-Jul-99 2.23E-OS 8.SE-Q7 1.2E-07 2.30E-04 7.0E-OS 5.9E-07
07-0ec-99 1.50E-D4 3.0E-Q6 2.0E.o7 1.70E-05 1.0E.o6 1.0E-OS
21-Apr-00 1.00E-D4 2.0E-06 1.2E-07 1.10E-04 7.0E-OS S.1E.o7
22-Jun-00 1.30E-QS 1.0E-07 2.4E-07 2.00E-04 1.0E-05 1.2E-Q6
21.oec·00 L20E-06 9.0E-07 2.4E-07 1.20E-04 3.0E-05 1.2E-Q6
30-ADr-01 1.80E-06 1.0E-07 1.7E-07 <8.3E-07 N/A 8.3E.o7
14-Jun-Ol 2.S0E-06 2.0E-07 9.9E-08 1.10E-06 2.0E-08 50E-Q7
17-Dec-01 2.63E-06 4.6E-Q5 1.2E-07 9.40E-QS 3.7E-C6 6.0E-Q7
07-Mav-02 3.50E-OS 2.2E-Q6 7.SE-07 1.36E-Q4 5.6E-06 1.0E-OS
07-Jul-02 4.02E-05 2.3E-06 7.SE-07 7.04E-05 4.1E-QS 1.0E-OS
15-0ec.o2 8.10E-05 3.9E-06 7.6E-Q7 2.87E-Q4 8.5E.oS 1.0E-D5
21-Mar-03 3.70E-05 2.SE-Q6 2.4E-OS 2.69E-05 2.0E-06 3.7E-06
10-Jun-Q3 1.30E-QS 1.0E-Q6 S.2E-Q7 <1.00E-07 1.0E-Q7
20-Nov-Q3 1.S0E-04 1.3E-Q5 1.2E-Q7 1.42E-04 6.4E-OS 5.9E-Q7
08-Aor-04 1.40E-04 7.7E.oS L1E.o7 6.10E.oS 2.7E-06 S.SE-D7
12-Jun.o4 S.S1E.oS 3.2E.o6 L5E-07 5.27E-05 4.9E-06 7.SE-1l7
30-Nov.o4 8.40E-05 5.7E-1lS 3.0E-08 3.39E.o4 1.6E.o5 3.0E.o7
21-Aor-OS 1.70E-OS 1.6E-Q6 1.3E·07 4.S0E-QS 3.SE-06 6.SE-D7
13-Jun-05 1.50E-05 1.SE.oS 1.4E-07 7.00E-05 5.1E-06 S.9E.o7
10-Nov-05 3.80E-05 2.1E.o6 8.6E-l0 1.20E-DS 4.8E.o8 4.3E-10
03-ADr-OS 1.00E.o4 S.OE.oS 5.0E-08 3.30E-D4 1.1E.o5 1.0E.oS
16-Jun.oS 3.40E.o5 2.5E.o6 5.0E.o8 1.37E-04 6.0E-06 1.0E.o6
12-Dec.o8 9.20E-QS 3.0E-OS 4_0E.oS 9.20E-QS 4.1E-06 9.6E-Q7
INTERNATIONAL URANIUM CORP.
WHITEMESAMILL
FORAGE RADIONUCLIDE DATA
NORTH EAST OF MILL
Ra-226 Ra-226 LLD Pb-210 Pb-210 LLD
SAMPLED VALUE ERROR uCilKg VALUE ERROR uCilKg
DATE uCI/Kg uCI/Kg S.OE-Oa uCI/Kg uCI/Kg 1.0E-Q6
27-Aua-81 3.9DE-Q4 1.DE-QS S.OE-Oa 1.10E-Q3 1.0E-Q4 LDE-Q6
2O-0cl-81 1.4DE-Q4 1.0E-QS S.OE-Q8 6.80E-Q4 8.0E-QS 1.0E-06
1S-Anr-82 1.3iE-Q4 1.3E-QS i.0E-06 4.80E-Q4 7.0E-QS 8.0E-OS
01-Jul-82 1.6DE-Q4 i.0E-QS S.OE-08 a.OOE-04 1.7E-Q4 i.0E-Q7
30-Nov-82 2.67E-06 1.1E-Q6 1.0E-Q6 L08E-Q4 9.0E-Q6 1.0E-OS
13-Anr-83 9.36E-QS 6.2E-Q6 8.0E-Q9 4.97E-Q4 9.3E-QS 1.0E-Q4
01-Jul-83 1.i2E-Q4 1.2E-QS 6.0E-06 1.B4E-Q4 1.2E-OS 1.0E-Q6
30-Jan-84 1.09E-04 8.0E-Q6 4.0E-06 7.80E-Q4 6.2E-OS 6.0E-OS
28-Jun-84 3.47E-Q4 1.2E-QS 2.0E-Q9 3.7SE-Q3 1.6E-04 4.0E-Qa
i4-Nov-84 S.6iE-04 2.0E-Q4 2.0E-07 7.82E-03 3.3E-04 7.0E-08
27-Mar-8S 1.0SE-Q3 3.0E-QS 2.0E-06 3.22E-Q3 1.4E-04 2.0E-QS
i5-Jul-8S 8.20E-OS 7.0E-Q6 3.0E-06 7.70E-Q4 1.3E-Q4 2.0E-04
09-0cl-8S 1.1SE-04 1.0E-QS 3.0E-Q6 S.i0E-Q4 3.0E-OS 2.0E-OS
24-MaH16 S.72E-Q4 2.1E-OS 4.0E-06 2.49E-03 1.0E-Q4 1.0E-OS
1Q-Jul-86 S.OiE-04 i.3E-QS 3.0E-06 1.57E-03 i.7E-Q3 2.0E-04
i8-Dec-86 8.70E-04 S.OE-QS 3.0E-Q6 6.80E-04 3.0E-OS 3.0E-06
20-ADr-87 S.90E-Q4 7.0E-OS S.OE-Q8 1.S0E-Q3 i.0E-04 1.0E-Q6
05-Jun-87 i.60E-04 3.0E-QS S.OE-08 9.50E-04 4.0E-05 1.0E-06
22-Dec-87 2.l0E·04 4.0E-OS S.OE·08 1.70E-03 i.0E-04 LOE-06
19-Anr-88 4.50E-Q4 7.0E-QS S.OE-Q8 1.40E-Q3 1.0E-04 1.0E-06
28-Jul-88 3.20E-OS 2.2E-QS S.OE-Q8 1.50E-Q4 4.4E-04 1.0E-Q6
07-Aor-89 S.60E-04 4.0E-QS -1.10E-03 i.0E-Q1 .~
06-Jun-89 1.S0E-04 2.0E-OS -2.30E-Q4 2.0E-OS -
07-Nov-89 6.00E-04 S.OE-QS 7.0E-06 2.04E-03 7.0E-OS 1.4E-OS
17-Anr-90 2.60E-04 3.0E-QS 4.0E-06 3.30E-Q4 2.0E-QS 2.2E-OS
20-Jun-90 1.80E-04 2.0E-QS S.OE-08 3.20E-04 2.0E-OS 1.0E-Q6
17-ocl-90 1.60E-Q4 2.0E-QS 5.OE-08 3.30E-Q4 2.0E-OS 1.0E-06
10-Anr-91 1.20E-04 2.0E-QS S.OE-06 3.00E-04 2.0E-OS 1.0E-06
11-Jun-91 910E-OS 1.6E-QS 2.0E-07 1.90E-Q4 2.0E-QS 2.0E-07
20-Nav-91 4.S0E-04 4.0E-QS S.OE·08 1.09E-Q3 S.OE-OS LOE-06
22-ADr-92 3.60E-OS 1.OE-QS 2.0E-06 1.50E-Q4 2.0E-OS 1.0E-OS
10-Jun-92 1.00E-OS 7.0E-Q6 2.0E-OT 7.50E-QS 2.0E-OS 1.0E-Q6
10-Jun-92 7.90E-OS 3.SE-QS 3.0E-06 7.10E-Q4 7.0E-OS 2.0E-OS
l3-ADr-93 3.70E-QS 2.2E-QS 3.0E-06 2.80E-04 3.0E-OS 2.0E-QS
26-Jun-93 3.00E-OS 1.SE-QS 3.0E-Q6 4.30E-OS 3.SE-OS 2.0E-QS
l2-0cl-93 660E-OS 2.7E-OS 3.0E-06 S.30E-04 6.0E-OS 2.0E-OS
11-Mav-94 1.80E-04 4.0E-QS 3.0E-OS 4.40E-04 6.0E·OS 2.0E-Q4
19-Jul-94 1.71E-OS 12E-06 9.0E-Q8 3.00E-OS 6.1E·06 4.SE·06
28-Nav-94 2.40E-04 1.SE-QS 1.7E-07 1.70E-04 1.lE-QS 8.3E·07
ll-ADr-9S 6.70E-OS 5.4E-06 1.6E-OT 1.40E-04 1.3E-OS 7.9E·07
06-Jul-9S 1.50E-OS 1.SE-Q6 1.SE-Q7 S.10E-QS 4.SE-06 7.6E-Q7
lS-Nav-9S S.SOE-OS S.OE-D6 1.8E-07 6.70E-OS 1.0E-QS 8.8E-Q7
23-ADr-96 S.20E-OS 2.SE-Q6 1.SE-07 3.20E-OS 4.5E-06 1.8E-07
31-Jul-96 . ....
14-NDV-96 3.00E-QS 2.SE-Q6 1.8E-07 1.40E-04 7.1E-06 9.3E-07
2i-Aor-97 1.10E-OS 4.7E-07 1.2E-Q7 4.1OE-QS 3.6E-Q6 6.1E-07
OS-Seo-97 i.l0E-OS 4.3E-Q7 1.3E-07 2.l0E-QS 7.3E-Q7 6.rE-07
20-Nov-97 800E-06 1.2E-06 S.6E-07 1.40E-04 4.6E-06 1.1E-07
23-Mar-98 <9.10E-OS 9.1E-OS 9.iE-OS <4.50E-04 4.SE-Q4 4.SE-04
16-Jun-98 1.80E-OS i.2E-06 6.3E-08 4.00E-QS i.8E-06 3.2E-07
OS-NoY-98 S.70E-QS 1.0E-06 8.2E-08 8.70E-QS S.OE-Q6 4.1E-07
lS-ADr-99 2,00E-D4 3.0E-06 i.2E-07 3.00E-04 1,OE-QS 6.0E-OS
07-Jul-99 6.03E-OS 1.4E-06 8.3E-08 1.40E-04 4.7E-06 4.2E-07
02-Dec-99 2.30E-OS 1.0E-06 2.3E-07 2.1DE-OS 1.0E-Q6 1.1E-06
21-Aor-OO 1.S0E-04 3.0E-06 1.2E-07 1.60E-04 8.0E-06 S.9E-07
22-Jun-Q0 i.20E-06 1.0E-07 2,8E-Q7 1.60E-04 i.0E-QS 1.4E-06
21-Dec-00 1.60E-06 1.1E-06 3.7E-07 S.10E-OS S.OE-06 1.9E-06
30-Aar-01 i.00E-06 1.OE-07 2.4E-Q7 <l.2E-06 1.0E-Q7 2.4E-07
14-Jun-Dl 2.30E-06 2.0E-07 9.9E-D8 3.80E-06 2.0E-Q7 S.OE-Q7
17-Dec-01 9.l0E-06 2.4E-D6 L2E-Q7 3.S7E-OS 3.0E-06 6.0E·07
07-Mav-02 3.30E-OS i.8E-06 7.6E-07 4.S0E-OS 2.6E-Q6 1.0E-QS
07-Jul-02 S.SSE-OS 2.8E-Q6 7.6E-Q7 S.31E-OS 3.9E-Q6 1.0E-OS
lS-Dec·02 7.7SE-OS 3.6E-06 7.6E-Q7 1.29E-Q4 6.2E-06 1.0E-OS
2l-Mar-03 9.i0E-Q6 1.3E-D6 3.6E-D7 1.l3E-OS 1.6E-D6 3.4E-06
i0-Jun-D3 2.S0E-OS 1.3E-06 3.6E-Q7 3.26E-06 2.0E-Q6 7.4E-08
20-Noy-03 S.70E-OS 3.SE-06 i.SE-Q7 4.0SE-QS S.8E-Q6 8.3E-QT
08-Aor-04 9.38E-QS 3.7E-D6 1.iE-Q7 S.88E-QS 3.0E-D6 S.SE-OT
i2-Jun-04 S.63E-OS 3AE-Q6 1.8E-Q7 6.42E-QS S.9E-06 9,OE-Q7
30-Noy-04 8.41E-OS S.SOE-Q6 2.DOE-Q8 2.48E-Q4 1.40E-OS 3.00E-07
21-Aor-QS S.60E-QS 3.00E-Q6 1.40E-Q7 S.80E-OS 4.00E-D6 6.90E-OT
13-Jun-QS 9.10E-Q6 1.50E-06 1.80E-Q7 1.10E-D5 1,20E-QS 9.00E-OT
10-NaY-OS 6.00E-OS 3.00E-06 1.i0E-l0 1.70E-06 6AOE-07 S.SOE-10
03-Aor-06 8.00E-OS S.OOE·06 S.OOE-08 3.40E-04 1.20E-OS II16-Jun-06 4.l0E-OS 3.10E-06 5.00E-D8 1.16E·04 6.l0E-Q6
12-Dec-Qa 1.SDE-Q4 S.20E-D6 9.90E-Q7 3.6DE-04 2.90E-DS
INTERNATIONAL URANIUM CORP.
WHITE MESA MILL
FORAGE RADIONUCUDE DATA
NORTH WESTOF MILL
Ra-226 Ra-226 LLD Pb-210 Pb-210 lLD
SAMPLED VALUE ERROR uCilKg VALUE ERROR uCi/Kg
DATE uCi/K9 uCilK9 5.0E-08 uCi/Kg uCilKg 1.0E-Q6
27-Aua-81 2.73E-03 S.OE-QS S.OE-Q8 7.10E-Q3 3.01"-04 1.01"-06
2Q-Oct-81 2.00E-Q4 lOE-QS S.OE-Q8 8.30E-Q4 S.OE-OS 1.0E-Q6
15-Apr-82 1.04E-Q4 9.0E-Q6 7.oE-Q6 6.4OE-Q4 5.OE-QS 4.0E-QS
01-Jul-82 2.00E-QS 101"-05 5.0E-Q8 2.20E-Q4 9.0E-QS 1.0E-Q7
30-Nav-82 2.36E.o6 9.SE-0?1.0E.o6 8.00E.os 1.OE-QS 1.0E.oS
~l'r-83 8.S8E-QS 1.4E-DS 2.0E-Q8 3.S3E-D4 1.9E-OS 1.0E-DS
01..Jul-83 1.191"·04 1.1E-OS S.DE-06 1.S8E-D4 1.3E-OS 1.0E-DS
30-Jan-84 9.78E·OS 7.01"-06 2.01"..06 2.16E-D3 3.41"-04 3.01"-04
28-Jun-84 2.08E-04 1.0E-05 3.01".09 1.60E.o3 7.0E-OS 3.01".08
14-Nov-84 6.0SE-04 1.6E-04 2.01".07 2.S8E.o3 1.1E-04 3.0E-Q8
27-Mar-8S 1.10E-04 8.OE-Q6 3.0E-Q6 8.631".04 4.2E-OS 3.0E.oS
1S..Jul-8S 6.10E-OS 6.OE-Q6 2.0E.o6 S.40E-04 S.OE.oS S.OE-OS
09-0et·85 1.07E.o4 6.0E.o6 2.0E-06 3.80E-04 3.0E.oS 2.0E-OS
24-Mar·86 8.86E-Q4 1.8E-QS 2.0E-06 4.40E-03 1.9E-04 3.0E.oS
10..Jul-86 6.66E-Q4 1.8E-DS 3.0E-06 4.78E-D3 2.1E.o4 6.0E-DS
18-Dee-86 S.20E.o4 1.0E-D4 3.01".06 1.701"-03 1.OE-Q4 6.0E-Q5
20-Aar-87 4.10E-04 1.0E.o4 S.OE.o8 1.601"-03 1.OE-04 1.0E.o6
OS-Jun-87 1.60E-04 3.0E.oS S.OE·08 S.SOE.o4 4.0E-DS 1.0E-06
22-Dee-87 3.601".04 S.OE.oS S.OE-08 1.80E-03 1.0E-04 1.0E.o6
19-Aor-88 2.60E.o4 S.OE.oS S.OE-08 1.90E-D3 1.0E-04 1.01"-06
28-Jul-88 3.10E-QS 1.9E-OS S.OE-Q8 1.60E-04 4.0E-DS 1.0E-06
07-Aar-89 6.20E-D4 S.OE-OS -1.70E-D3 1.0E-D4 -06-Jun-89 3,40E.o4 3.0E-DS -?.40E-04 3.0E-OS -07-Nov-89 S.10E.o4 6.0E-OS 7.0E-06 1.00E-03 7.0E.oS 1.4E-Q5
17-ADr-90 3.60E-Q4 3.0E-OS 4.0E-06 4.80E-04·2.0E-QS 2.2E-DS
20-Jun-90 1.70E-Q4 2.0E.oS S.OE-08 3.20E-Q4 2.0E-OS 1.0E-D6
17-0el-90 8.80E.oS 1.6E-OS S.OE-Q8 2.90E-Q4 2.0E-OS 1.0E-D6
10-ADr·91 3.00E.o4 3.0E.oS S.OE.o6 4.10E-04 2.0E-DS 1.0E-06
11·Jun-91 3.10E-D4 3.0E-OS 2.0E.o7 4.70E-D4 2.0E.oS 2.0E.o7
20-Nov-91 S.00E-D4 4.0E-OS S.OE-Q8 1.50E-Q3 1.0E-D4 1.0E-Q6
22-Aor-92 2.00E-QS 8.0E-D6 2.0E-D6 9.60E-DS 1.4E-QS 1.0E-DS
10-Jun-92 6.50E-D6 6.0E-Q6 2.0E.o6 1.20E-04 2.0E-QS 1.01"-06
10-Jun·92 1.20E·04 4.0E.oS 3.0E-06 1.21E-03 8.0E-QS 2.0E-OS
13-Aor-93 1.80E-QS 1.7E-DS 3.0E-06 2.lOE-Q4 3.0E-DS 2.0E-OS
26..Jun-93 S.20E-OS 1.9E-DS 3.0E-06 1.70E-OS 3.6E-QS 2.0E-OS
12-0cl-93 S.10E-OS 2.3E-OS 3.0E-Q6 7.10E-04 6.0E-DS 2.0E-DS
11-Mav-94 1.201"..04 1.OE-OS 3.0E·OS 9.801"-04 1.6E-Q4 2.0E.o4
19-Jul-94 3.73E-DS 1.6E-06 8.4E-D8 7.80E·OS 7.1E·06 4.2E-07
28-Nav-94 2.401"-04 1.5E-QS 1.7E-Q7 2.60E-04 1.3E-DS 8.3E-Q7
l1-ADr-9S 8.4OE-OS 6.1E-06 1.SE-07 1.20E-04 1.1E-OS 7.SE-OS
06-Jul-9S 1.90E-DS l.5E-06 1.4E-D7 4.SDE-QS 4.3E-D6 7.2E-07
lS-Nav-9S 1.2DE.o4 6.8E-Q6 1.4E.o?1.0DE-OS S.8E-06 7.1E-07
23-ADr-96 8.30E-QS 3.3E-06 1.9E-07 6.8DE-OS 6.3E-06 1.8E-07
31-Jul-96 .... ._.-
1.6E-07 S.6E-0614-Nov-96 3.60E-QS 2.SE-06 8.50E-05 8.4E-D7
21-Anr-97 3.30E-OS 2.3E-06 1.?E-Q7 4.40E-OS 4.8E-06 8.4E-Q7
OS-Seo-97 S.40E-06 3.5E-07 1.6E-07 3.20E-OS 9.0E-07 7.8E-07
2Q-Nav-97 8.90E-06 7.2E-07 S.4E-07 3.40E-D4 6.7E-06 1.1E-07
23-Mar-98 <9.20E-OS 9.2E-OS 9.2E-os <4.6DE-04 4.6E-Q4 4.6E-04
16-Jun-98 <6.S0E-08 6.SE-08 6.SE-08 <3.20E-Q7 3.2E-07 3.2E-D7
OS-Nav-98 4.20E-OS 1.0E-06 1.1E-07 1.7DE-04 1.0E-DS S.SE-07
lS-Aor-99 S.20E·OS 1.0E-06 lOE-07 1AOE·04 7.0E-06 1.0E-D7
07-Jul-99 S.4SE-OS 1.4E-06 8.3E-Q8 9.20E-OS 4.0E-06 4.2E-07
02-Dec-99 1.10E-Q4 3.01"-06 2.2E-07 2.80E-QS 1.0E-06 1.1E.o6
21-Apr-DO 3.70E-OS 1.0E-06 2.4E-D7 2.70E-04 1.0E-Q5 1.2E-D6
22-Jun-00 2.9DE-OS 1.0E·06 3.3E-07 2.801"-04 2.0E-DS 1.71"-06
21-Dec-00 2.30E-QS 1.4E-06 3.7E-D7 3.30E-04 S.OE·OS 1.9E-06
30-Aor-Q1 2.10E-DS 1.OE-D6 1.SE-07 <7.6E-Q7 N/A 7.6E-D7
14..Jun-Ql 1.30E.o6 4.0E-08 1.21"..07 1.80E-06 3.0E-08 S.9E-Q7
17-Dee-01 3.70E-OS 7.67E-07 8.30E-08 6.721"-05 2.621"-06 6.00E-Q7
7-Mav-02 4.90E-OS 2.401".06 7.601"-07 1.28E-Q4 S.61E-Q6 1.00E-OS
7-Jul-Q2 8.88E-OS 4.32E-Q6 ?60E-Q7 8.33E-OS 4.32E-06 1.00E-DS
1S-Dee-Q2 1.SOE-04 6.21"..06 7.601"-07 3.161"-04 1.0?E-OS 1.OE-DS
21-Mar-03 S.OOE-DS 3.41"-06 2.711"..06 <4.2e-6 4.20E-06
1O-Jun-D3 S.60E-OS 2.01"-06 4.10E-Q7 1.881"-04 5.14E-06 8.2E-D8
20-Nov.o3 3.20E.o4 8.21"-06 1.70E.o7 4.89E-04 1.25E-os 8.3E-Q7
8-Aor-04 6.29E-DS 4.1E·06 2.001"-07 1.94E-oS 4.001"-06 1.01"-06
12-Jun-04 6.S1E-QS 3.4E-06 1.30E-07 1.87E-OS 3.901"-06 6.SE-07
30-Nov-Q4 7.S0E-QS 4.61"-06 2.0E-D8 4,4SE-04 1.40E-OS 3.0E-07
21-Aor-oS 4.90E-QS 2.701"-06 1.30E-Q7 1.27E-04 4.801"-06 6.S0E-07
13-Jun-OS 2.30E-oS 2.10E-QS 1.SOE-Q7 4.70E-DS S.10E-06 7.S0E-D7
10-Nav-OS 7.40E-DS 3.S0E-DS 1.201"-10 2AOE-06 8.10E-08 S.80E-10
5-ADr-D6 1.00E-D4 6.001"..06 5.001"..08 6.54E-Q4 1.50E-QS 1.00E-06
16-Jun-D6 9.S0E-DS S.90E-06 5.00E-D8 4.481"-04 1.40E-OS 1.001"..06
28-Nav.o6 8.13E·OS 4.10E-06 2.20E-07 3.2SE-04 1.12E-06 1.00E-OS
30-Mar-0?4.30E-QS 2.60E-D6 1.70E-07 2.64E-04 ?20E-06 8.S0E-0?
1-Jun-07 S.10E-OS 3.20E-Q6 2.301"-07 S.30E-04 1.40E-OS 1.20E-06
20-NOv-07 7.30E-QS
Attachment G
..eNERGYLABORATORIE5.INC.·2393Sal/CreekHighway(82601)'RD.Box 3258 •Casper,WY82802
lOllFree 888.235.0515 •301.235.0515 •Fax [phone] •[e-mail]·www.energylab.com
LABORATORY ANALYTICAL REPORT
Client:Denison Mines (USA)Corp
Project:Quarterly Radionuclide Testing
Lab 10:C08101134·004
Client Sample ID:5095 Filter and Beaker
Report Date:12105/08
Collection Date:10/07/08
DateReceived:10/17/08
Matrix:Air
Analyses
TRACE METALS
Uranium
Uranium,Activity
Result Units
1.29 mg/tmer
873 pCilFiller
Qualifiers RL
0.0003
0.2
MCU
QCL Method
SW6020
SW6020
Analysis Date'By
11110/0819:41/15
11/10/o819:41/ls
\
!
RADIONUCUDES •TOTAL
Lead 210
Lead 210 precision (±)
Lead210MDC
Radium 226
Radium 226 precision (t)
Radium 226 MDC
Thorium 230
Thorium 230precision (±)
-0.9 pCilFilter U
18 pCilFiller
30 pCilFilter
0.7 pCilFilter U
1.1 pCilFiller
1.7 pCilFilter
0.1 pCilFiner U 0.20
0.63 pCilFiller
E909.oM
E909.oM
E909.0M
E903.o
E903.0
E903.0
E907.0
E907.0
11/18/08 10:001 dm
11/18/08 10:00/dm
11/18108 10:001dm
11/18/oB 12:10 /Irs
11/1BI0812:10/trs
11/18108 12:10/lrs
11/13108 19:37/dmf
11113/08 19:37 /dmf
Report
Definitions:
Rl-Analyte reporting limit.
aCL -Quality controllimil.
MDC •Minimum delectable concenlration
MCl •Maximum contaminant level.
ND •Nol detected atthe reporting limit.
U•Not detecled al minimum delectable concentration
JlIIi}fM ENERGYLA80RATORIE~INC.•2393SaltCreekMghway (82801)'P.O.Box3258 •Casper,WY82602~_Toh_r_A_re_e_a._'88._~_:1._'5._o._'5t._5_'_3<_'O_7._.2._'35._.o._'5_15_'_A_<lX_30_7._.2._'34._._'6._'J_9_"_C,_'EJS_ifJe._"_@_8._'!l_er!l_rJ'i_"Ei_iJ._.c.o_'/l1_._WWlY._.e_'!l_ell_Vy,_"8_V_.CO_'/l1 _
LABORATORY ANALYTICAL REPORT
Client:Denison Mines (USA)Corp
Project:Quarterly Radionuclide Testing
Lab 10:C08101134-D05
Cllent Sample 10:5096 Filter and Beaker
Report Date:12105/08
Collection Date:10f07/08
DateReceived:10f17108
Matrix:Air
Analyses
TRACE METALS
Uranium
Uranium,Activity
Result Units
1.11 mglfilter
751 pCilFiller
Qualifiers RL
0.0003
0.2
MCU
QCL Method
SW6020
SW6020
Analysis Date 1By
1111010820:02/t5
1111OJ08 20:02Its
'-I
J
RADlONUCLlDES •TOTAL
Lead 210
Lead 210 precision (:1:)
Lead 210 MOe
Radium 226
Radium 226 precision (:I:)
Radium 226 MDC
Thorium 230
Thorium 230 precision (:I;)
1.7 pCilFilter U
18 pCI/Filter
30 pel/Filter
-0.5 pCilFilter U
0.8 pCI/Filter
1.7 pCiJFilter
1.6 pCilFiller 0.20
1.0 pCilFlller
E909.0M
E909.OM
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
11/18/08 10:00/dm
11118108 10:00I dm
1111810810:00 /dm
11118/08 14:52 /Irs
11118108 14:52/lrs
11/1810814:521lrs
11113/0819:37/dmf
11113/0819:37/dmf
iJ
Report
Definitions:
RL -Analylereporting limit.
QCL -Quality controllimll.
MDC-Minimum detectable concentration
Mel -Maximum contaminant level.
ND -Not detected at the reporting limit.
U·Not detected at minimum detectable concentration
illr.-ENERGYLABORATORIE~INC.•2393SaltCreekHighway(82601)'AD.Box3258 •Casper,WY82802idii5;_70_{I_A_,e_e_88_'8._2J._'5._.o._~_t5_'_Si_'O_7._2J._'5._.o._~_t5_'_A._ax_30_7._.2._'3_'4;_t6._:s._'9_._ca_sp_e_r_@_e_ne_r!l_1}I;_1ab_.C1_om_._ww_IY._en_'8_'!l_1}I;_18_b_.c_om _
LASORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample 10:
Analyses
Denison Mines (USA)Corp
Quarterly Radionuclide Testing
C08101134·006
5099 Filter and Beaker
Result Units Qualifiers RL
Report Date:
Collection Date:
DateReceived:
Matrix:
MCU
QCl Method
12/05/08
10/08/08
10/17108
Air
Analysis DateI By
TRACE METALS
Uranium
Uranium,Activity
0.0012 mg/filler
0.8 pCi/Filter
0.0003
0.2
SW6020
SW6020
11110/08 20:06 1ts
11110/0820:061 ts
RADIONUCLIDES •TOTAL
lead 210
Lead 210 precision (±)
lead 210MOC
Radium 226
Radium 226 precision (±)
Radium 226 MDC
Thorium 230
Thorium 230 precision (f)
17 pCVFilter U
18 pCUFilter
30 pCilFilter
·1 pCilFilter U
0.7 pCUFlIler
1.6 pCilFilter
1.2 pCVFiller 0.20
1.2 pCVFilter
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
11118/0810:00/dm
11/18108 10:001dm
1111810810:001dm
11/1810814:52I1r5
11/18/08 14:521 trs
11118/0814:5211rs
11114/08 08:491 dmf
11/14/0808:491dmf
Report
Definitions:
RL -Analyte reporting limit.
QCl•Quality control limit.
MDC •Minimum detectable concentration
MCl•Maximum contaminant level.
ND •Not detected at the reporting limit.
U•Not detected at minimum detectable concentration
I.lHlliJ.w ENERGYLABORATORIES,INC••2393 SaIl Creek Highway(82601).PQ Box3258 •Casper,WY82602~_To._'!I_A_re,_e_8._'88._._23._:5._.o._i5"_15_'_30_7._.2._~_'5._.o._'5_15_'_Fax_3,_'O_7._.2._'34_._16._'3._'9_._c,_a_sp_e,_'f@_en_e_r{J._~_ia_b._co._m_._www._._ene._'!'!J._~_ia_b._Co._m _
LABORATORY ANALYTICAL REPORT
.1.
Client:
Project:
LabID:
Client Sample 10:
Denison Mines (USA)Corp
Quarterly Radionuclide Testing
C08101134·007
5098 Filter and Beaker
Report Date:12/05/08
Collection Date:10/08/08
DateReceived:10117/08
Matrix:Air
Analyses
TRACE METALS
Uranium
Uranium.Activity
Result Units
0.0012 mglfiller
0.8 pCilFilter
Qualifiers RL
0.0003
0.2
MCU
QCL Method
SW6020
SW6020
Analysis Date 1By
11110/0820:101 ts
1111010820:10/ts
'l
Ii
RADIONUCUDES •TOTAL
lead 210
lead 210 precision (t)
lead 210 MDC
Radium 226
Radium 226 precision (±)
Radium 226 MDC
Thorium 230
Thorium 230 precision (t)
15 pCilFilter U
18 pCilFilter
30 pCilFilter
-0.4 pCilFiller U
0.9 pCi/Filter
1.7 pCilFilIer
0.21 pCUFiller 0.20
1.1 pCi/Filler
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
11118/0810:00/dm
11/1810810:00/dm
11118/0810:001 dm
11118/08 14:521 trs
11/1810814:521 trs
11/1810814:521 trs
11/14/0808:491 dmf
11/14/08 08:49/dmf
Report
Definitions:
RL -Analyte reporting limit.
QCl •Quality control limit.
MDC •Minimum delectable concentration
Mel-Maximum contaminant level.
ND •Not detected at the reporting limit.
U•Nol delecled at minimum detectable concentration
..
ENERGYLABORATORIES,INC.•2393Salt CreekHighway(82601)'P.O.Box3258 •Casper,WY82802
_To._1/_H_rB_B_B._'B._'8.2._l1._'5._.D._'5_15_._S,_'O_'7_23._'5._,o._'5_'5_'_A_ax_30_7._.2._'34._._'_83._'9_'_Ctl_S p_e._'f_@_8_'I78_'f{l_'YI._B._'b_.c,_om_._www._._en_e_'!l._~_1a_&_.c,o_m _
LASORATORY ANALYTICAL REPORT
Client:Denison Mines (USA)Corp
Project:Quarterly Radionuclide Testing
Lab 10:C08101134-OO8
Client Sample 10:5100 Filter and Beaker
Report Date:12105/08
Collection Date:10/08/08
OateReceived:10/17/08
Matrix:Air
Analyses
TRACE METALS
Uranium
Uranium.Activity
Result Units
0.0018 mglfilter
1.2 pCilFilter
Qualifiers RL
0.0003
0.2
MCU
QCL Method
SW6020
SW6020
Analysis Date 1By
11/1 OIOB 20:14Its
11110/0820:14/ts
IJ
II
RAOIONUCLIOES -TOTAL
Lead 210
Lead 210 precision (t)
Lead 210 MDC
Radium 226
Radium 226 precision (±)
Radium 226 MDC
Thorium 230
Thorium 230 precision (:I;)
2.2 pCi/Filler U
18 pCilFilter
30 pCi/Filter
-0.2 pCi/Filter U
1 pCilFiller
1.8 pCilFiller
0.75 pCilFiller 0.20
1.2 pCi/Filler
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
11/1810810:00 I dm
11118f0810:00/dm
11/18108 10:00I dm
11118/08 14:521 Irs
11/18/0814:521Irs
11/1810814:521Irs
11/14/0808:49 I dmf
11/1410808:491 dmf
Report
Definitions:
Rl •Analyje reporting limit.
QCl·Quality control limit.
MDC -Minimum detectable concentration
Mel-Maximum contaminant level.
NO •Not detected at the reporting limit.
U•Notdetected at minimum detectable concentration
Attachment H
/iflilflifl ENERGY LABORATORIES,INC.•2393 SaltCreekHwy(82601j •PO Box3258 •Casper,WY 82602
em.mm.U1f:if Toll Free 888.235.0515 •307.235.0515'FAX[phone] •[e-mail] *www.energyfab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample 10
Denison Mines (USA)Corp
3rd Quarter Surface Water
C08080388-001
Cottonwood Creek
Report Date:08/19/08
Collection Date:08/07/0808:40
DateReceived:08/08/08
Matrix:Aqueous
MCU
Analyses Result Units Qualifier RL QCL Method Analysis Date1By
PHYSICAL PROPERTIES
Solids,Total Dissolved TDS@ 180 C 188 mglL 10 A2540 C 08/1110815:511 jh
Solids,Total Suspended TSS @ 105 C 24300 mg/l 1 A2540 D 08111108 12:31 1jh
Report
Definitions:
RL -Anafyte reporting limit.
QCl -Quality control limit.
MCl-Maximum contaminant level.
ND -Notdetecled at the reporting limit.
/iId-lii!jf ENERGY LABORATORIES,INC.•2393 Salt Creek Hwy (82601)•PO Box 3258 •Casper,WY 82602
R,:t.ud.mut'Toll Free 888.235.0515 *307.235.0515 *FAX [phone] *[e-mail] •www.energylab.com
LABORATORY ANALYTICAL REPORT
Client:
Site Name:
Denison Mines (USA)Corp
Annual Soil Samples Report Date:10/13/08
Lab ID:C08081011-001
Client Sample 10:BHV 1
Matrix:Soil
Analyses
METALS·TOTAL
Uranium
RADIONUCLlDES·TOTAL
Radium 226
Radium 226 precision (±)
Radium 226 MOC
Lab ID:C08081011-002
Client Sample ID:SHV 2
Matrix:Soil
Result Units
1.82 mg/kg-dry
0.9 pCi/g-dry
0.1 pCi/g-dry
0.09 pCi/g-dry
Collection Date:08/2010808:12
DateReceived:08/22108
MCU
Qualifiers RL QCL Method Analysis Date I By
0.03 SW6020 08/29/0822:051sml
E903.0 09/23/0815:02 I evm
E903.0 09/23/08 15:021 evm
E903.0 09/23/0815:02 I evm
Collection Date:08120108 09:42
DateReceived:08/22/08
Analyses
METALS·TOTAL
Uranium
RADlONUCLlDES·TOTAL
Radium 226
Radium 226 precision (±)
Radium 226 MOC
Result Units
0.63 mg/kg·dry
0.3 pCilg·dry
0.08 pCi/g-dry
0.08 pCilg-dry
Qualifiers RL
0.03
MCU
QCL Method
SW6020
E903.0
E903.0
E903.0
Analysis Date I By
08/29/08 22:25 I smI
09/23/08 15:02 1evm
09/2310815:021 evm
09/23/08 15:02 I evm
Lab 10:C08081011-003
Client Sample ID:SHV 4
Matrix:Soil
Collection Date:08/20108 08:41
DateRecelved:08/22/08
Analyses
METALS·TOTAL
Uranium
RADIONUCLIDES •TOTAL
Radium 226
Radium 226 precision (±)
Radium 226 MOC
Result Units
1.17 mg/kg-dry
0.5 pCilg-dry
0.1 pCilg-dry
0.09 pCi/g-dry
Qualifiers RL
0.03
MCL!
QCL Method
SW6020
E903.0
E903.0
E903.0
Analysis Date I By
08/29/08 22:291sml
09/23/0815:021 evm
09/23/0815:02 Ievm
09/23/08 15:021 evm
Report
Definitions:
RL -Analyte reporting limit.
QCl -Quality control limit.
MOC -Minimum detectable concentration
MCl -Maximum contaminant level.
NO -Not detected at the reporting limit.
mgt;,t!}?ENERGY LABORATORIES,INC.*2393Salt Creek Hwy (82601)*PO Box 3258 *Casper,WY 82602
Rt:i.titm.mt¥'Toll Free 888.235.0515 *307.235.0515 *FAX [phone] *[e-mail] *www.energylab.com
LABORATORY ANALYTICAL REPORT
Client:
Site Name:
Denison Mines (USA)Corp
Annual Soil Samples Report Date:10/13/08
Lab 10:C08081011-004
Client Sample ID:BHV 5
Matrix:Soil
Analyses
METALS -TOTAL
Uranium
RAOIONUCLIOES -TOTAL
Radium 226
Radium 226 precision (±)
Radium 226 MOC
Lab 10:C08081 01 1-005
Client Sample 10:BHV 6
Matrix:Soil
Result Units
1.96 mg/kg-dry
0.8 pCi/g-dry
0_1 pCi/g-dry
0.09 pCi/g-dry
Collection Date:08/20/08 08:30
DateReceived:08/22/08
MCL!
Qualifiers RL QCL Method Analysis Date I By
0.03 SW6020 08/29/08 22:33I sml
E903.0 09/23/08 15:02I evrn
E903.0 09/2310815:02 I evm
E903.0 09/23/08 15:02 I evm
Collection Date:08/20/08 08:23
DaleReceived:08/22/08
Analyses
METALS -TOTAL
Uranium
RADlONUCLlDES -TOTAL
Radium 226
Radium 226 precision (±)
Radium 226 MDC
Result Units
0.99 mgfkg-dry
0.5 pCi/g·dry
0.1 pCifg-dry
0.09 pCifg-dry
Qualifiers RL
0.03
MCL!
QCL Method
SW6020
E903.0
E903.0
E903.0
Analysis Date I By
08/29/08 22:37I sml
09/2310815:02 I evm
09/23/08 15:02I evm
09/23/08 15:0218vm
Lab 10:C08081011-006
Client Sample 10:BHV 3 (Black Mesa)
Matrix:Soil
Collection Date:08/20/0809:21
OateReceived:08/22/08
Analyses
METALS·TOTAL
Uranium
RAOIONUCLlOES·TOTAL
Radium 226
Radium 226 precision (±)
Radium 226 MOC
Result Units
1.45 mg!kg-dry
0.6 pCi/g-dry
0.1 pCi/g-dry
0.09 pCi/g-dry
Qualifiers RL
0.03
MCL!
QCL Method
SW6020
E903.0
E903.0
E903.0
Analysis Date I By
08/29/08 22:41 I sml
09123/08 15:02I evm
09/23/08 15:02I evm
09/23/08 15:02I evm
Report RL -Analyte reporting limit.
Definitions:aCL -Quality control limit.
MDe -Minimum detectable concentration
MCl -Maximum contaminant level.
NO -Not detected at the reporting limit.
m::kli?ENERGY LABORATORIES,INC.•2393Salt Creek Hwy (82601)•PO Box 3258 •Casper,WY 82602
.jM.Mfi.m4f Tofl Free 888.235.0515 •307.235.0515 •FAX [phone] •[e-mail] •www.energylab.com
LABORATORY ANALYTICAL REPORT
Client:
Site Name:
Denison Mines (USA)Corp
Annual Soil Samples Report Date:10/13/08
Lab 10:C08081011-007
Client Sample 10:West Water Creek
Matrix:Soil
Analyses
METALS·TOTAL
Uranium
RADIONUCLIDES •TOTAL
Radium 226
Radium 226 precision (±)
Radium 226 MOC
Result Units
0.21 mg/kg-dry
0.1 pCilg-dry
0.07 pCi/g-dry
0.09 pCi/g-dry
Collection Date:08/20/0808:55
DateReceived:08/22/08
MCU
Qualifiers RL QCL Method Analysis Date1By
0.03 SW6020 08129108 22:45 I sml
E903.0 09123/0815:021 evm
E903.0 09123/08 15:02/evm
E903.0 09/23/08 15:02/evm
Report Rl -Analyte reporting limit.
Definitions:QCl -Quality control limit.
MOC -Minimum detectable concentration
Mel-Mrodmum contaminanllevel.
ND -Not detected at the reporting limit.
SEMI-ANNUAL EFFUENT REPORT
JANUARY 1,2008 THROUGH JUNE 30,2008
DENISONMINES
August 28,2008
Mr.Dane Finerfrock,
Executive Secretary,
Utah Radiation Control Board,
Utah Department ofEnviromnental Quality,
Division ofRadiation Control
168 North 1950 West
Salt Lake City,Utah 84114-4850
Dear Mr.Finerfrock:
Re:State ofUtah Radioactive Material License No.UT1900479
White Mesa Mill,Blanding,Utah
Semi-Annual Effluent Monitoring Report for Period
January 1,2008 through June 30,2008
!.',
As required by Utah Administrative Code,R 313-24-4 (incorporating by reference 10 CFR 40.65
(subpartl»,and License Condition I I.3 A of Utah Radioactive Materials License UTl900479,
enclosed is the semi-annual effluent monitoring report for the White Mesa Mill for the period
January 1,2008 through June 30,2008.
If you have any questions regarding this report,please contact Mr.David Turk or myself at
telephone number [phone].
Yours very truly,~~-
DENISON MINES (USA)CORP.
Steven D.Landau
Manager,Environmental Affairs
Cc Ron Hochstein
Harold Roberts (w/o attachments)
David Frydenlund
David Turk
Tom Rice,Ute Mountain Ute Tribe
Robert Duraski,EPA Region 8
i:"
Denison Mines (USA)Corp.
www.denilonmines.com
105017th Street,Suite 950
Denver,CO,USA 80265
Tel:303 626·7796
Fax:[phone]
White Mesa Uranium Mill
Radioactive Materials License UT900479
Scmi-Annual Efflucnt Rcport
(January through June,2008)
Prepared By Denison Mincs (USA)Corp.
1050 17th St.Suite 950
Denver,CO.80265
August 28,2008
Introduction
The White Mesa Mill ("the Mill")has established monitoring programs to evaluate
compliance with effluent limitations and to assess the potential for release ofradioactive
material into the local environment.These monitoring programs were developed and
implemented at the time of mill construction,operated with appropriate adaptation over
time,and remain consistent with the Mill's Radioactive Materials License and guidelines
developed by the Nuclear Regulatory Commission (U.S.N.R.C.Regulatory Guide 4.14,
Radiological Ejjluent and Environmental Monitoring at Uranium Mills-Rev.1,
MLO03739941),1980).Accordingly,the Mill monitors the following environmental
media and conditions:
I)Airborne particulate radionuclide concentrations obtained from the following
sampling stations:
•North,East and South of the Mill Site:BHV-l &BHV-2 (north),BHV-5
(east),and BHV-4 (south)
•BHV-I serving as a surrogate for thc nearest resident,(i.e BIIV-I is
approximately 1.2 miles north ofthe Mill,but approximately 0.4 miles closer
to the Mill than the actual nearest resident)
• A background location distant to and west of the Mill (BHV-3),which was
monitored for airborne particulate up until November,1995,at which time
background was established.
• A station specifically requested by the White Mesa Ute Community south of
the Mill Site (BVH-6)
2)External (direct)gamma radiation measured at air monitoring stations BHV-I,
BHV-2, BHV-3,BHV-4,and BHV-5.
3)Radon-222 is measured at air monitoring stations BHV-l,BHV-2,BHV-4,
BHV-5 and BHV-6
3)Vegetative uptake ofradionuclides at three site periphery locations
4)Stack release rates from the facility's air emissions sources
5)Surface water within the Cottonwood Creek and,when flowing,the Westwater
Creek drainage,both located west ofthe Mill
6)Soil radionuclide activity obtained near the air monitoring stations
7)Ground water (up and down gradient)ofthe Mill facilityl
This semi-annual effluent report provides the results of the specific monitoring and
sampling activities that were undertaken during the subject reporting period,including:
•Airborne particulate concentrations and radionuclide activity
•External radiation measurements
•Radon-222
•Vegetative radionuclide uptake
•Radionuclide release rates measured at the yellowcake stack and baghouse
•Surface water radionuclide content
1 Ground waler sampling is reported separarely pursuant to the State of Utah Ground Water Discharge
Permit No.UGW370004 and is not included with this report.
Table ofContents
Section
Introduction ,..
Table ofContents .
1.0 Environmental Air Sampling
1.1 Program Overview ,.
1.2 Sampling Protocol &Analytical Results ..
1.3 General Observations .
1.4 Specific Sampling Station Data .
1.5 Radon-222 .
2.0 External Radiation (Direct Gamma).
3.0 Vegetation Samples ..
4.0 Stack Sampling ..
5.0 Surface Water Monitoring .
6.0 Soil Sampling .
7.0 Meteorological Monitoring .
Attachments
Page
11
I
I
2
3
5
7
8
8
9
9 1'",
9
Attaclnnent A
Tab I
Tab2
Tab 3
Tab 4
TabS
Tab 6
Attaclnnent B
Attaclnnent C
Attachment D
Attaclnnent E
Attaclnnent F
Attachment G
Attaclnnent H
Attaclnnent I
Sampling Station &Site Map
BHV-I Air Sampling Graphs &Data Table
BHV-2 Air Sampling Graphs &Data Table
BHV-3 Air Sampling Graphs &Data Table
BHV-4 Air Sampling Graphs &Data Tablc
BHV-5 Air Sampling Graphs &Data Table
BHV-6 Air Sampling Graphs &Data Table
Air Radionuclide Lab.Results and QAJQC
Air Particulate Loading Tables
Radon-222 Analytical Sheets
Environmental TLD Graph and data
Vegetation Graphs,Data Table,Lab.Results and QAJQC
Stack Sample Laboratory Results
Surface Data Table,Lab.Results and QAJQC
Soil SampleLab.Results and QAJQC
11
1.0 Environmental Air Sampling
1.1 Program Overview
The environmental airborne pat1iculate monitoring program at the White Mesa Mill ("the
Mill")currently utilizes five air sampling stations.Four high-volume continuous air
sampling stations (BHV-I,BHV-2,BHV-4,and BHV-5)are required by the Mill's
Radioactive Materials License.These sampling stations serve as sentinels for airborne
particulate which could potentially emanate from the Mill site.In addition to its general
site monitoring function,location BHV-1 also serves as a conservative surrogate for
concentrations at the nearest resident,because it is located approximately 1.2 miles north
ofthe Mill just south ofthe nearest resident but between the Mill and that resident.With
regard to background monitoring,the Mill previously operated a continuous high-volume
air sampling station (BHV-3)which was located approximately 3.5 miles west of the
Milling operation.With the approval of the U.S.Nuclear Regulatory Commission and
effective November,1995,this station (BHV-3)was removed from the active air
monitoring program.At that time,IUSA proposed (and the NRC determined)that a
sufficient air monitoring data base had been compiled at station BHV-3 to establish a
representative airborne radionuclide background for the Milling facility.It should be
noted,however,that while air sampling was discontinued at this location,gamma
measurements and soil sampling continue to be collected at BHV-3.
In addition to the environmental air sampling locations described above,a sixth station
(BHV-6)was installed at the request of the White Mesa Ute Community.This station
began operation in July of 1999 and provides airbome particulate information in the
southcrly direction between the Mill and the White Mesa Ute Community
1.2 Sampling Protocol and Analytical Results
Airborne particulate monitors arc opcrated continuously at each of the high-volumc air
sampling stations referenced above.Particulatc samplc collcction filtcrs arc gathered by
site technicians weekly in accordance with the Mill's environmental air sampling
procedures and are composited on a quarterly basis for laboratory analyses.The
analytical parameters applied to thc collected filtcrs are:Uranium-Natural activity,
Thorium-230 activity,Radium-226 activity,and Lead-2l0 activity.In addition to thc
requisite nuclide dcterminations,particulate loading is determined for each filter and
composited as a quarterly mass-loading estimate for review purposes only.Fugitivc dust
standards for the facility are limited by the Mill's State ofUtah air quality permit,which
sets a 20%visual opacity standard.The specific locations of the Mill's airborne
pat1iculate monitoring stations are depicted on the attached figure,High Volume Air
Monitoring Stations (Attachment A).The analytical results of radionuclide particulate
sampling for each monitoring station operated during this January through Junc,2007
reporting period are provided under separate sampling station attachment tabs beneath
Attachment A to this report (Tabs 1-6).Each Tab contains graphical illustrations of the
nuclide concentrations in log-scale presentation format.The graphs display reported data
over time since the 1981 inception of the Mill's environmental air monitoring program.
The actual analytical results (and associated QAlQC information)reported by the
laboratory are provided under Attachment B.It should be noted that for graphical
illustration purposes,values reported at zero,values reported at less than the prescribed
detection limit «1 x 10-16 uCi/ml)and missing values were plotted as 1 x 10-16 uCi/m1
concentrations.Where other "less than"values were indicated (e.g.data where detection
limits varied from 1 x 10-16 uCi/ml) the detection limit concentration was utilized for
plotting the data point.The reader should also note that this graphing convention is not
utilized to fOllliulate station average information, nor is it intended as a precedent for data
treatment.Instead,the intent here is to provide a conservative viewable depiction of site
airborne nuclide information.The conservative nature of this format is founded in the
fact that the actual concentration below the detection limit can not be determined and,as
such,the plotted point is at a higher concentration than the actual activity concentration
ofthe collected sample.
In accordance with the above,the following environmental air sample station attachments
are provided with this report for the period:
•BHV-1,Nearest Resident "Surrogate"Monitor
•BHV-2,North Monitor
•BHV-3,Background
•BHV-4,South Monitor
•BHV-5,West Monitor
•BHV-6,White Mesa Ute Community Monitor
•Radionuclide Data
•Particulate Loading Data
1.3 General Observations
Tab 1
Tab 2
Tab 3
Tab 4
Tab 5
Tab 6
Attachment B
Attachment C
The results of cnvironmental air monitoring for this semi-annual period indicate that for
all nuclides at all monitoring stations airborne radionuclide particulate activity
concentrations were well below regulatory Effluent Concentration Limits (ECL's)and
the Companies ALARA goals.It is noteworthy and expected that Pb-21 0 concentrations
arc clevated when compared to thc othcr parent nuclidc conccntrations (i.c.U-nat,Th-
230 and Ra-226).This phenomenon is due to the well-established controlling effect
experienced world-wide as a result of the ubiquitous presence of radon in the earth's
atmosphere.Accordingly,elevated Lead-21 0 presence in disequilibrium with parent
nuclides mcasured here is not associatcd with uranium milling operations.
Radon-222 emanates as a decay-chain progeny of the Radium-226 contained in the soil
of the earths crust and is dispersed generally throughout the earth's atmosphere.The
clectrically chargcd short and long-lived decay products ofRadon-222 attach to ambient
dust particles found naturally in the atmosphere and are carried with thc air.Lead-210 is
the longest lived of these decay products and is thc decay product of the shorter-lived
radon progeny.As such,it accumulates as an electrical attachment on the natural
ambient dust in the atmospherc and is gcnerally mcasured at elcvated activity when
compared to local decay-chain parent nuclide activity,regardless of uranium milling
2
actlVlty.At the Mill's BHV air monitoring stations,all dust (ambient natural and mill
derived)is collected by the sample filter.Because of the natural elevation of Pb-210
accumulated as an attachment to the naturally occurring ambient dust particles collected
by the air sampling equipment,Lead-2l0 is commonly elevated and in disequibrium
when compared to parent nuclide activity,regardless of the Mill's presence.By way of
illustration,average ground-level concentrations have been repOlted for selected States
(NCRP Report 94,1992)and are summarized in Table I below,demonstrating elevated
Lead-210 activity where no uranium milling operations are located nearby.Lead-210
activity concentrations can be expected to be even higher for locations in the western
U.S.where uranium ore bodies are commonly located.
Table 1-NCRP Report 94-Global Lead-210 Concentration Example
State Pb-210 Concentration
uBqlM'uCi/ml
California 600 1.6E-14
Illinois 1500 4.IE-14
Ohio 300 8.1E-15
Massachusetts 700 1.9E-14
1.4 Site Specific Sampling Data
The results of airborne particulate monitoring for the period (without background
subtraction)are provided by sampling station and nuclide in Tables 2-5 below.Along
with these data,the tables present comparative Effluent Concentration Limits (ECL's)
and the ECL percentage measured at each ofthe monitoring stations sampled during the
period.A review of these data supports the conclusion that airborne particulate is well
controlled at the Mill.More specifically,in an cases the measured activity concentrations
were well within the ECL,as well as the Mill's ALARA Goal (i.e.25%ofthe ECL).In
fact,the data obtained since program inception in 1981 indicates that only one individual
quarterly measurement (TH-230 at BHV-5 for the 2nd Qtr,1996)has ever exceeded the
ECL at the Mill.With regard to this pmticular single measurement,while it is important
to consider and evaluate an individual measurement exceeding the ECL,for public dose
estimation purposes it is the annualized data that are of primary significance.In this
instance,the annualized Th-230 data for BHV-5 in 1996 arc well below the ECL for the
annual period.
In addition to these observations,evaluation of the data by comparison to the Mill's
ALARA Goals reveals that,with very few exceptions,the gross (background inclusive)
measurements also do not exceed the site's ALARA objectives which have been
established at 25%of the ECL (i.e.only 9 of the 2,064 gross nuclide determinations
exceeded the Mill's self-imposed ALARA threshold).It should also be noted that the
analytical laboratory maintained Lower Limits of detection consistent with NRC
Regulatory Guide 4.14 for this reporting period.
3
Table 2-Air Monitoring Station Results V-Nat (Comparison to Limits)
Monitoring I"Qtr.Result 2"'Qtr.Result Effluent Average
Station (uCi/ml)(uCi/ml)Concentration Percent
Limit (ECL)ECL
(uCi/ml)
BHV-I 1.14 E-16 7.09E-16 9 E-14 0.46
BHV-2 <1.0 E-16 1.29 E-16 9 E-14 0.13
BHV-4 1.25 E-16 1.28 E-16 9 E-14 0.78
BHV-5 3.16 E-16 3.13 E-15 9 E-14 1.92
BHV-6 4.34 E-16 1.88 E-16 9 E-14 1.29
Table 3-Air Monitoring Station Results Th-230 (Comparison to Limits)
Monitoring I"Qtr.Result 2"'Qtr.Result Effluent Average
Station (uCi/ml)(uCi/m!)Concentration Percent
Limit (ECL)ECL
(uCi/m!)
B1N-I 1.13 E-16 3.83 E-16 2 E-14 0.83
BHV-2 <\.O E-16 <1.0E-16 2 E-14 0.33
BHV-4 <1.0 E-16 7.72E-16 2 E-14 1.45
BHV-5 6.17 E-16 9.27 £-16 2 E-14 3.60
BHV-6 3.51 E-16 9.00 E-16 2 E-14 2.09
Table 4-Air Monitoring Station Results Ra-226 (Comparison to Limits)
Monitoring 1"Qtr.Result 2""Qtr.Result Effluent Average
Station (uCi/ml)(uCi/m!)Concentration Percent
Limit (ECL)ECL
(uCi/m!)
BHV-l <1.0 E-16 2.27 E-16 9 E-13 0.02
BHV-2 <1.0 E-16 <1.0 E-16 9E-13 0.01
BHV-4 <1.0E-16 3.61 E-16 9 E-13 0.03
BHV-5 3.70E-16 9.27 E-16 9E-13 0.26
BHV-6 <1.0 E-16 4.04 E-16 9E-13 0.03
Table 5-Air Monitoring Station Results Pb-210 (Comparison to Limits)
Monitoring I"Qtr.Result 2""Qtr.Result Effluent Average
Station (uCi/ml)(uCi/m!)Concentration Percent
Limit (ECL)ECL
(uCi/m!)
BHV-l 6.44 E-15 6.52 E-15 6 E-13 1.08
BHV-2 6.49 E-15 4.82 E-15 6 E-13 0.94
BHV-4 4.09 E-15 1.18 E-14 6E-13 1.33
BHV-5 4.82E-15 7.40 E-15 6 E-13 1.02
BHV-6 5.99 E-15 7.41 E-15 6 E-13 1.12
4
1.5 Radon-222
Due to the unavailability of monitoring equipment to detect the new 10 CRF Part 20
standard,and with the approval of NRC,Radon 222 monitoring at BHV stations was
discontinued in 1995.Instead,Denison demonstrated compliance with these limits and
the requirements of R313-15-301 by calculation,authorized by the NRC and as
contemplated by R313-15-302 (2)(a).
This calculation was performed by use of the MILDOS code for estimating
environmental radiation doses for uranium recovery operations (Strenge and Bender
1981)and more recently in 2003 by use of the updated MILDOS AREA code (Argonne
1998).The analysis under both the MILDOS and MILDOS AREA codes assumed the
Mill to be processing high grade Arizona Strip ores at full capacity,and calculated the
concentrations of radioactive dust and radon at individual receptor locations around the
Mill.
The MILDOS and MILDOS AREA codes calculated the combined Total Effective Dose
Equivalent (TEDE)from both air particulatc and radon at a number oflocations including
the nearest potential residence (the individual likely to receive the highest dose from the
licensed operation),approximately 1.2 miles north of the Mill.These calculations
rcvcaled projcctcd doses to the individual likely to receive the highest dose from the
licensed operations to be below the ALARA goal of 10 mrem/yr for air particulate as set
out in R313-15-101(4).Radon had also been calculated to be within regulatory limits.
Whilc confident that past modeJing was sufficiently accurate,it was Denison's belief that
detection equipment had improved since 1995.Accordingly,Denison initiated active
Radon-222 sampling at its air monitoring stations during the first quarter of2007 as an
augmentation to the calculated results obtained previously by use of the MILDOS
computer codc.As citcd above,Dcnison was grantcd approval by NRC in 1995 to utilize
such calculations to determine compliance with these limits,in lieu ofradon sampling,as
contemplated by R313-15-302(2)(a).A copy of the Technical Evaluation Report
evidencing such approval was enclosed with correspondence to the Division on July 28,
2008.Accordingly,while active sampling was initiated during 2007,its purpose was as
an evaluative tool to track Radon-222 trends for ALARA purposes and not as a
replacement for the calculated values which demonstrated compliance with the resulting
concentration limits.
While reviewing the 2nd Quarter 2007 data it was observed by Denison that the
concentration indicated at Location BHV-2 was elevated and nearly twice the next
highest readings.Becausc the BHV-2 location is distant (nearly 3 miles)from Milling
activities and,since BHV-l,which is eJoser to the Mill and in the same wind path as
BHV-2,measured only 0.4 pCifL,Denison surmised that the alpha track reading at BHV-
2 was errant.As the year (2007)proceeded this belief was supported by the observed
radon data.More specifically,the prior reading (I Sf Quarter,2007)was 0.1 pCifL and the
subsequent readings for 3ed and 4th Quarters were 0.3 and 0.1 pCifL,respectively,as
compared to the questioned 2nd Quarter concentration of 0.7 pCilL.Given the logistics
5
and measurements at BHV-2 and BHV-I,and the fact that milling activities were
reasonahly constant (ore was being received and alternate feed was being processed
throughout the ycar),milling activities were ruled out as a cause for the anomalous
reading.However,data for the Ist Quarter,200S has again indicated an anomalous
concentration of 0.7 pCi/L at BHV-2.In contrast,subsequent (2nd Quarter,200S)data
were at less than the stated detection limit of 0.4 pCi/L.Denison has noted that the 0.4
pCi/L reading (4E-I 0 uCi/ml)does not comport with the NRC Rcgulatory Guide 4.14
specified lower limit of detection of2E-10 uCi/m!.Accordingly,we have requested that
the analytical laboratory recount the 2nd Quarter,200S alpha track detectors at a higher
density to achieve the required LLD.The results of these re-analyses are pending at the
time of this writing but will be transmitted to the Division once they become availablc.
As such,Denison is hesitant to draw any conclusion about the data obtained thus far by
alpha track detection due to the inconsistent nature of the observed data.However,these
previously calculated MILDOS AREA results confirm the facility's compliance with the
Radon-222 limits.This demonstrated compliance is confirmed by the fact that the annual
average radon measurements to date at BHV-2 are below the equilibrium adjusted
evaluation criteria (including the errant high value for first quarter)set out in Table 6
below.As a result,the facility is compliant with its annual limit,despite the
demonstrated inconsistency in measured concentrations.
Table 6-Location Specific Effluent Concentration Limits for Rn-222
Air Wind Distance Travel Equilibrium Calculated 1"Qtr '2"3 Qtr
Speed Time ECL 2007 2007Station(ln/s)(m)(minntes)Factor (pCiIL)'(pei/L)*(pCiIL)*
BIIV-5 4.3 900 3.49 0.07 1.43 0.8 ••
BHV-6 4.2 1600 6.35 0.12 0.83 0.6 ••
BHV-I 4.3 2000 7.75 0.14 0.71 0.7 ••
BHV-4 2.8 2000 11.90 0.20 0.50 0.5 ••
BHV-2 4.3 4900 18.99 0.29 0.34 0.7 **
•These valnes include subtraction ofthe background concentrations measured at BHV-3.
**All radon-222 values,including background,reported for the 2"Quarter,2008 indicated concentrations
below 0.4 pCi/L.
1When comparing alpha track data to effluent concentration limits for radon,two referenced limits are listed
in the regulations.One limit (1 x 10.10 uCi/ml or 0.1 pCi/l)is for instances where radon daughters arc present
with the radon,and are in 100%equilibrium with the parent Rn-222.The other listed concentration limit (l x
10.8 ueilm!or 10 pei/I)is applicable when radon daughters are not present.At the White Mesa Mill,100%
equilibrium of radon progeny with parent Rn-222 is unrealistic given the short half lives of the nuclides
considered and the short travel time to the monitoring locations.Radon emanates from the ground (or mill
tailings)without daughters present,and the daughters grow in over time.It is therefore neces.sary to evaluate
radon daughter equilibrium at each air monitoring station utilizing site-specific wind speed and distance
information to derive site-specific Effluent Concentration Limits (EeL's).Such disequilibrium situations
and alternative calculations are anticipated by the regulations and,in particular,R313-15-302(3)provides a
means by which the licensee may adjust the effluent concentration values in Appendix B to lOCRF,Part 20
at table 2 (which are incOIporated by reference into R313-15-302(2)(b)(i))to account for disequilibriwn.Toe
regulatory purpose ofsuch an adjustment is to appropriately take into account the actual characteristics ofthe
measured effluents,including radioactive decay equilibrium.
6
"~.'
Toward this end,Denison utilized an established (EPA,1986)outdoor equilibrium fonnula to detennine the
appropriate Equilibrium Factor for use in calculating the ECL for disequilibrium conditions.The EPA
expression oflheoutdoor Equilibrium Factor(EF)is derived by the following equation:
EF =1.0 -0.047gexpC-II4.39)-2.1963exp(-1138.6)+1.2442 expHI28.4)
[Where, t is the travel time in minutes (distance/wind speed)]
Once the Equilibrium Factor has bet.'1l detennined,the ECL for each air monitoring station is detem1ined by
dividing the 0,I peill limit (for situations when daughters are present in equilibrium)by the Equilibrium
Factor(EF).
By utilizing this formula,Denison has detennined the appropriate (equilibrium adjusted)evaluation threshold
for each of its air monitoring stations.This infonnation,the data inputs used to determine the Equilibrium
Factor,and the results of sampling for this report period are shown in Table 6,It should be noted when
observing the comparison between the actual measurement value and the derived ECL that the derived EeL
provides ample protection for members of the public.More specifically,by utilizing current ICRP dose
conversion factors the EeL's established here represent approximately 25 mrem for a continuous exposure at
the monitoring stations.Therefore these values serve as an ALARA goal and would yield doses welI below
the 100 mrem standard for individual members ofthe public,
2.0 External Radiation (Direct Gamma)
Gamma exposure rate estimates were measured for the first and second quarters of 2008
utilizing passive integrating devices,thennoluminescent dosimeters (TLD's).These
dosimeters were co-located at each of the license-required high-volume air sampling
stations and at the designated background monitoring station (BHV-3).Measurements
obtained from location BHV-3 have been designated as background due to BHV-3's
remoteness from the Mill site and attendant lack ofpotential for exposure from the Mill
operation (i.e.BHV-3 is located approximately 3.5 miles west of the Mill site).The
results of the environmental TLD measurements and semi-annual cumulative above-
background data are provided in Table 7 below.In addition,measurement data obtained
at these locations are graphically presented at Attachment D to this report.
Table 7-Environmental TLD Measurements (Gamma)
Monitoring I"Qtr 2na Qtr 1"Qtr 2"'Qtr.Cumulative
Station Result Result Result Less ResultLess Semi-
(rnrcm)(mrem)Background Background Annual
(mrem)(mrem)Estimate*
_.(rnrem)
BHV-!37.44 33.02 2.73 1.17 3.9
BHV-2 34.71 32.76 0 0.91 0.91
BHV-3 34.71 31.85 NA NA NA
BHV-4 34.45 32.50 -0.26 0.65 0.65
BHV-5 34.19 32.76 -0.52 0.91 0.91
BHV-6 31.20 28.21 -3.51 -3.64 0.00
*Negative values treated as zero for cumulative dose
The results for this period indicate that above background measurements for stations
BVH-1,BVH-2,BVH-4,BVH-5 and BHV-6 are well within regulatory limits with a
7
maximum exposure of3.9 mrem for the period at BHV-1.The exposure rates indicated
are approximate to the background values measured at BHV-3,except the first quarter
value at BHV-I which is anomalous and possibly received some in-transit exposure.
This supposition is supported by the elevated values show for the control badge for the
period.The annual individual member of the public (IMOP)limit is 100 mrem/yr at the
property boundary for combined internal and external exposure.
3.0 Vegetation Samples
Vegetation samples are collected at three locations around the mill periphery.The
sampling locations are:1)Northeast,2)Northwest and 3)Southwest of the Mill facility.
The vegetation samples are collected during early spring,late spring and fall (e.g.the
growing seasons).Graphical log-scale presentation ofthe vegetative radionuclide uptake
observed for this reporting period and results reported by the analytical laboratory
(including QNQC information)are included at Attachment E of this report.The early
and late spring 2008 data compared to the results ofprevious years indicate no increase in
uptake of Ra-226 or Pb-210 in the vegetative growth collected and are within the
variation ofprevious sampling episodes.Trending of these data is generally down when
the entire period of record is eonsidered.It should be noted that vegetation samples in
reeent years were collected during a period of severe drought in San Juan County.For
this reason sampling was dramatically affected due to the scarcity of available vegetative
species at the respective sampling locations.Regarding lower limits of detection,all
analyses indicated detected concentrations.
4.0 Stack Sampling
Processes involving effluent control equipment and associated stack emissions (i.e.,the
yelloweake dryer and baghouse)were operating in the 1$I Quarter of 2008 while uranium
product from alternate feed processing was dried and packaged.However,during the
2nd quarter the mill was in a process transition to unrefined ore processing but
yellowcake drying was not condueted during the quarter.Consequently,stack sampling
was performed only in the 1"Quarter ofthis semi-annual period.The analytical results of
the yellowcake stack sampling are provided in Table 8 below,indicating the uCi/cc
rclease for V-Nat,Th-230,Ra-226 and Pb-210 at the yelloweake dryer for that quarter.
The aetual analytical results reported by the laboratory are provided in Attachment F to
this report.It is important to note that stack effluent eoneentrations are not comparable to
environmental air sampling station ECL's for regulatory compliance purposes.Tne ECL
is a limit that applies to the site boundary locations and is not applicable to effluents from
mill processes on the Mill site.These staek release data are more appropriately utilized
for dose modeling purposes and dose modeling is not computed for semi-annual reporting
purposes.The matter of laboratory detection limits for stack sampling was addressed in
recent correspondence to the division subsequent to these analyses.Consequently,future
(post July,2008),data will be compliant with Regulatory Guide 4.14 guidanee with
regard to LLD's for staek sample analyses.
8
:':-
Table 8-Stack Effluent Concentration and Release Rate
Radionuclide Quarterly (1"Quarter)Sampling Quarterly (2'"Quarter)Sampting
North Yellowcake Dryer
U-Nat u/Cilee 1.9E'9 None None
U-Nat.nCi/,ec 1274 None None
Ra-226 uCilec 5.4E-13 None None
Ra-226 uCiisee 0.36 None None
----
Th-230 nCilee 2.4E-12 None None
Th-230 nCiI,ee 1.62 None None
Pb-210 nCilee -1.8E-13 None None
Pb-210 nCiI,ec -1.2E-t None None
5.0 Surface Water Monitoring
Surface water samples were collected from Cottonwood Wash during the I"and 2nd
Quarters during this reporting period,however,Westwater Creek was not able to be
sampled because it was dry for the quarterly sampling events.The analytical results are
compiled in tabular format in Attachment G to this report.In addition,Attachment G
includes the actual results reported by the laboratory,as well as the attendant QAlQC
infOlmation accompanying the laboratory's report.Cottonwood Wash is an intermittent
ephemeral drainage located southwest and down-gradient of the Mill complex.
Radionuclide data (O-Nat,Th-230 and Ra-226)do not indicate trending over time nor are
influences from the Mill operations evidenced by the reported data.
6.0 Soil Sampling
Annual soil samples are collected by the Mill staff during the third quarter of each year
and are,therefore,not reported for this period.
6.0 Meteorological Monitoring
As in prior reporting periods,an independent contractor has prepared the White Mesa
Mill Semi-annual Meteorological Monitoring Report for the period of January through
June,2008.This infOlmation is retained at the Mill site for agency review.
9
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Sep-81
111111 I I IIII 1111 11111
11111 11111'1111 11111
Sep-82 11111 I I I111 1111 11111
Illtl 111111 1111 11111
11111 1111 1111 11111
11111 111111 1111 11111
Sep-83 11111 111111 1111 Illil
11111 111111 1111 11111
tllli 111111 1111 11III
11111 111111 IIII l!III
Sep-84 Illll ,111111 1111 1111
Illi 111111 1111 111I
llli I 1 IIIt 1111 .111
1111 I 1 IIII IIII IIII
Sep-85 1111 , ,,IU'1111 1111
1111 ,I"I 1111 1111
'"',I'"1111 1111
1111 ,1111 1111 liltSep-86 1111 IIII ,1111 1111 1111
1111 1111 ,I..,1111 1111
1111 IIII '"1111 1111
Sep-8?1111 IIII I111 1111 1111
1111 IIII 1111 1111 '111
1111 IIII 1111 1111 "II O:l11111111Itil11111111
Sep-88 1111 1111 1111 1111 1111 :I:
1111 I III 1111 1111 "II <1111 I III 1111 1111 1111 •1111 I III ,III 1111 "II ....
Sep-89 1111 r"ll 1111 1111 "II
1111 Itlll 1111 lilt 1111 :;0
+
1111 Hill 1111 1111 "II III111111111"1111 1111 e.Sep-90 11111 11111 '"1111 1111
11111 11111 '"Illl 1111 0C11111'"IIII 1111
Z 11111 '"lilt 1111 ::;,
Sep-91 11111 '"1111 11111 c:~11111 '"1111 11111 ~11111 '"1111 11111
+
11111 '"1111 11111 a:Sep-92 111111 '"1111 1111
'"1111 1111 CD
Itlll '"1111 1111 n-i 11111 till 1111 tttl
::T Sep-93 IllIt ,1111 1111 IIII 0,'"I 1 I til 1111 1111 ::l'",1111 1111 lin nCOtillIIII,1111 1111 1111aSep-94 .111 ",IIII 1111 1111 CD
+
till ",I tlI 1111 1111 ::;,
1111 ",IIII 11111 1111 -.,
Sep-95 1111 '",1111 1111 1111 IIItillIIII,1111 lilt 1111 -;0 till IIII ,1111 1111 1111 O·1111 IIII ,1111 1111 1111'"Sep-96 1111 Ilit 1111 1111 1111 ::;,r:.,1111 '"1111 1111 1111 III'"1111 '"1111 1111 1111 ~'"1111 '"1111 1111 1111
Sep-9?1111 IIII 1111 1111 1111 c:
+
1111 IIII 1111 1111 1111 ntillIlit1111IIII1111::::IIII IIII 1111 1111 1111 3Sep-98 lilt t III 1111 1111 lilt"U ttll t 1111 tlU 111I 11110-1111 I"I 1111 1111 1111 -r:.,Sep-99 1111 IIII till lilt ifill
~1111 1111 IIII lill 11111a1111,llil III!1111 11111
1111 ,'"till 1111 I !til
Sep-OO 1111 ,,Itll till till 11111
Ittl ,Itll 111I till II III
Iitl ,'"till till 1111
1111 ,'"1111 1111 1111
Sep-01 lilt ,'"till till 1111
1111 '"till 1111 1111
Iltl '"till 1111 1111
1111 t III 1111 1111 1111
Sep-02 lilt '"11111 1111 1111
1111 '"1111 1111 1111
1111 '"1111 1111 1111
1111 '"1111 1111 1111
Sep-03 1111 '"1111 1111 1111
1111 '"1111 1111 1111
1111 '"1111 IIII 1111
1111 '"1111 IIII 1111
Sep-Q4 1111 '"1111 1111 1111
1111 '"1111 1111 1111
1111 '"1111 1111 1111
Sep-05 1111 '"1111 1111 1111
1111 '"1111 1111 1111
1111 '"1111 1111 1111
1111 '"1111 1111 1111
Sep-Q6 1111 '"111I 1111 1111
11111 '"IIII IIll 111I
11111 '"111I 1111 1111
11111 '"1111 1111 1111
Sep-O?11111 '"IIII Itll Hill
11111 '"IIII It II IfIII
111111 '"1111 1111 tllli
1IIIti '"1111 lilt Itlll
Effluent Concentration Limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit =5E-12uCi/ml
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
BHV-1 Uranium-Natural Concentrations (uCi/ml)
1.00E-11
1.00E-12
1.00E-13
"i"1.00E-14
c;;uUl
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d.1.00E-15
1.00E-16
1.00E-17
--------------------------------------------------------------------------------------------------------------------------------------------------------i
=================================================
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--------------------------------------------------~--------------------------------------------------
--------------
=====================================================================================================
1.00E-18
~~~~~~~~#~~~~#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1.00E-11
Effluent Concentration Limit =2E-14 uCi/ml
ALARA Goal =5E-13 uCi/ml
Pre 1994 MPC Limit =8E-14uCi/ml
Pre 1994 ALARA Goal =2E-14 uCi/ml
----------------------------------------------------------------------------------o
BHV-1 Thorium-230 Concentrations (uCilml)
~~==:===:::::::===========================-------------------------------------------
1.00E-12
1.00E-13
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~,~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
------------------1--------------------------------------------~~~~~~~~~~~~~~~~~~-::::::::::::::::::::::::::::::::::::::::::::::::::
------------------------------------------------------------------------------------------------------------------------------------------------------------------------
----------------------------------~~~~i~~~~~:~:~~~~~~~~~~~~~~~~~
..1.00E-14
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=!.1.00E-15
1.00E-16 -----w-m ~----- -- - -- - - ---------
"---,,-----------------
1.00E-17 =================::::===================::::::jC:===:======================================
1.00E-18
~~~#~~~~~~~~~#~~~~~~~~~~*~~###########################
Effluent Concentration Limit =9E-13 uCilml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
BHV·1 Radium·226 Concentrations (uCi/ml)
~..~(/)
Cld.
1.00E-11
1.00E-12
1.00E-13
1.00E-14
1.00E-15
1.00E-16
--------=================:=:::::=====================================================================-----------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------\--------------------------------------------------
--================--------
1:~~~:~::::::::~~~~~~~~:::~::::::~~~~~::~:~~~~~~~~~,~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
=====================================================================================================-----------------------------------------------------------------------------------------------------
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1\~,....,_~~t It 4 -----------------------------------------------------------
----------
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-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1.00E-17 ===============================----------------------------------------------------------------------------------------
1.00E-18
~~~#~~~~#~~~~#~~~~~~~~~~~~~###########################
Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA Goal =1E-12 uCilml
BHV-1 Lead-210 Concentrations (uCi/ml)
.,
~VI
OJ~
1.00E-11
1.00E-12
1.00E-13
1.00E-14
1.00E-15
1.00E-16
1.00E-17
1.00E-18
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Tab 2
BHV-2 Radionuclide Concentrations (uCi/ml)
1.00E-11
1.00E-12
1.00E-13
.,1.00E-14
~til
Clo::::!.1.00E-15
1.00E-16
1.00E-17
==========================================================:==============:=========::::::::::::::=::::
1.00E-18
~~~~~~~~~~~~~~b ~~~~~~~~~b ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&~&~~~~~~~~~~~~~~~~~~~&~~~~~~~~~~~n~~~~~~~~~~~~~~~~~'l!'\-~'\-""~~v ""~'l!'\-'))'l!~'Ii '\-'))I:l ~
1__U-Nat --Th-230 -.-Ra-226 --Pb-210 I
Effluent Concentration Limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit =5E-12uCi/ml
Pre 1994 ALARA Goal =1.25E-12 uCilml
BHV·2 Natural Uranium Concentrations (uCi/ml)
---
--------------------------------------------------~
=============================================================================================---------------------------------------------------i
1.00E-11
1.00E-12 ------------------------------------------------------------------------------------------------------------------------------------------------------=============================================-----
1.00E-13 -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------1==========-==----------=============----------====
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iiiuVI
Cllo=.1.00E-15
1.00E-16
=====================================================================================================-----------------------------------------------------------------------------------------------------
===~===~1\=====~=======~======~====================jt==============================================
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=====::::0~~=:::::::~~Al!i!Ii;;;;~~:~~~~~~~~~L=.=.=.=~~
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1.00E-17 =====================================================================================================-----------------------------------------------------------------------------------------------------
1.00E-18
,~~~~~~~9 ~,~~~~~~~B ~,~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&&~&~~~~~~~~~~~~~~~~~~~&~~~~~~~~~~~n~~~~~~~~~~~~~~~w~~~~~'",v ,,,~~~~~~~~~~
Effluent Concentration Limit =2E-14 uCi/ml
ALARA Goal =5E-13 uCilml
Pre 1994 MPC Limit =8E-14uCi/ml
Pre 1994 ALARA Goal =2E-14 uCi/ml
BHV-2 Thorium-230 Concentrations (uCilml)
1.00E-11 ===========::::::::::::::::::::::::::=======::::::::==:::::::::::::::::=:::::::::::::::::::::::::====~::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::'
-----------------------------------------------------------------------------------------------------~-----------------------------------------------------------------------------------------------------,
1.00E-12 =====================================================================================--~
1.00E-13
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1.00E-16
1.00E-17
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Effluent Concentration Limit =9E-13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCilml
BHV-2 Radium-226 Concentrations (uCi/ml)
1.00E-11 :::=============================
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Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA Goal =1E-12 uCi/ml
BHV-2 Lead-210 Concentrations (uCi/ml)
1.00E-11 ----------------------------------------------------------------------------------------------------------------=======================
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1.00E-12
1.00E-13
1.00E-14
1.00E-15
1.00E-16
1.00E-17
1.00E-18
BHV-3 Radionuclide Concentrations (uCi/ml)
:.:::: :::::.:: :::::::::::::.:::. :.:::. :.:: .: :::::. :.:.:::.:.:::. :. :.:.:::. :.:: :: :::.:.:::::::: :: :::.:.:.:.::.:: :::::.:.:. :.:::.:::::.:.:.:. :. :.:::.:.:: :::. :. :. :. :. :. :. :.:::. :.:::.:::.:::.:.:: :::.:: :: ::
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~~~~~~~~~::~~~~~~~~:~~~~:~~~~~~~~~~~~~:~::::~~\~~~;:~::::::::::::::::::::~::::::::::::::::::::::::::7-V~~I'\L\ri---iiW----~-:V\~A::7\;.jvv5::::::::::_________________________-,"~'""'~,_,:,::::::::::::::./-----\I ---------------------==y ~
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Effluent Concentration Limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit =5E-12uCi/ml
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
BHV·3 Uranium Nat.Concentrations (uCi/ml)
1.00E-11
1.00E-12 ===:::::.::::::::===::::::::::::-----------------------------------.------------
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Effluent Concentration Limit =2E-14 uCi/ml
ALARA Goal =5E-13 uCi/ml
Pre 1994 MPC Limit =8E-14uCi/ml
Pre 1994 ALARA Goal =2E-14 uCi/ml
::::::::::::::::::::::==::.:::::::::::::::::::::::::::::::::::::--------------------------.---------------.---- -------.---._---..-.--------------------.- - ----------
BHV-3 Thorium-230 Concentrations (uCi/ml)
====::;;::::::.::::::::::::::::::::::::::::========:====-----..--------.----------------.-----------------._---------------.-----------------------------------------------------------.--.---.
1.00E-12
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1.00E-16
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Effluent Concentration Limit =9E-13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
BHV-3 Radium-226 Concentrations (uCi/ml)
1.00E-11 ==============:.:===:.:::.:.:.::.::.::.:.::.:.:.:.::::::::::.:::.::::::::::::::::::::::::::::::::.:::::
1.00E-12 \
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1.00E-13 --~--:::::::::::::::::::::::::::::::::::::::::::.::::::::::.:::::::.:::::::::::::::::::::::::.::
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1.00E-16
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1.00E-18
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Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA Goal =1E-12 uCi/ml
BHV-3 Lead-210 Concentrations (uCi/ml)
-----------------------------------------------------------------------._-------._-------.-------.--------------------------_.
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1.00E-12
1.00E-15
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Tab 4
BHV-4 Radiionuclide Concentrations (uCi/ml)
1.00E-11
1.00E-12 ======================================================================================================
:irl
Ul
tll.3-
1.00E-13
1.00E-14
1.00E-15
1.00E-16
1.00E-17
~<:>'"<:>'0 ~Q fit f:i.fit0'0 0'0 0'0 0'0
<:>....<:>'"<:>'"
'o<$.'o<$.'o<$.c;;c;;c;;
0.,0.,<:><:>
~~0'0 0'0
'*'0.,'"0.,'0 ~o.,'b~~~~~0'0 0'0 0'0 0'0 0'0
~~~~~~~~~~~~~~~~~~~~~~~~~~00 00 00 0'0 00 0'0 0'0 00 0'0 0'0 00 0'0 0'0
1.00E-18
1__U-Nat --Th-230 -.-Ra-226 --Pb-210 I
Effluent Concentration Limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit =5E-12uCi/ml
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
BHV·4 Uranium Natural Concentrations (uCi/ml)
1.00E-11
1.00E-12
1.00E-13
.,1.00E-14
~II)
01o::!.1.00E-15
1.00E-16
1.00E-17
--------------------------------------------------------------------------------------------------------------------------------------------------------i
----------------------------------------------------------------------------------------------------
--------------------------------------------------~--------------------------------------------------
---------------- ------------ -------
'-- - ------ - - - ------------- -------------------------------------------------------------------------
1.00E-18
~"~""~",#~'o ~<:o ~~'O ~O)9>':>9>"9>""9>'"#9>'0 9><:0 ~9>'0 9>0)~':>~"~""~",>J"~'o ~<:o ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1.00E-11
Effluent Concentration Limit =2E-14 uCi/ml
ALARA Goal =5E-13 uCi/ml
Pre 1994 MPC Limit =8E-14uCi/ml
Pre 1994 ALARA Goal =2E-14 uCilml
================================--------------------------------o
BHV-4 Thorium-230 Concentrations (uCi/ml)
1.00E-12 ===:::==:::===:::========================================================================::==========-----------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------
~~~~mw:~~~~~~~rrm~=-~~:~:!~m~~~\~f~~-'-t~~~~~~~~~HJ:d :~~~~:-:~:~~~~~-~~~~~==--~~~~r_~~HH~~,-------------------------------------_::~:-------------------------------------------------------------------1\l--t---------------------- -------
--F~l -~-------------~----------------------------------------------__'_6____ ___
----- --------------------------------------------------------------------- ---------------------------------------------------------------- --------------~1:~:---------------::-:-::--:::;:::::-------:::-:tt:::::~:::::::::::::::::::::::::::::::::::-f~--~--------------------------ft--.-------------~~-----------------------------------------
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~.,~.
miii"Ul
'"d
1.00E-13
1.00E-14
1.00E-15
1.00E-16 ---------------------------------------o -=:::'"'::~~========~==========--
1.00E-17
:::::::~:::::::::::::::::::::::::::::::::::::::::::::::::::::::
-----------------------------------------------------------------
1.00E-18
~~~~@ ~~~~~~~~~~~~~~~~~~~~~~###########################
1.00E-11
Effluent Concentration Limit =9E-13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
BHV-4 Radium-226 Concentrations (uCi/ml)
1.00E-12
1.00E-13
Q)1.00E-14
~Ul
'"o
:::!.1.00E-15
1.00E-16
1.00E-17
I (-------------------------------------------------
~-------------------------------------------------i-:co:::::::::::::::::::::::::::::::::::::::::::::::
--------------------------------------------------.--------------------------------------------------
-----------------------
~~~==================================================================================================
=====================================================================================================
b·--l-----I--t;r,-I-l lib -~!--------------~-b-----------H _________________ ___w _
1.00E-18
~~0/~~*~~~~~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCilml
Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA Goal =1E-12 uCi/ml
BHV-4 Lead-210 Concentrations (uCi/ml)
1.00E-11 =====================================================================================================-----------------------------------------------------------------------------------------------------i
1.00E-12 ==================================================------------------------------------
============================================::======:===============================:::::::::::======
--------------------------------------------------,--------------------------------::-::::::::-:--:-:1
b-=---_-=IJ======_I __=-=============-====-=l-b==================================================
1.00E-13
.,1.00E-14
iGu
t/)
Dlo::!.1.00E-15
1.00E-16 ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1.00E-17 =====================================================================================================-'
1.00E-18
~~~#~~~~#~~w~#~~~~~~~~~~~~~###########################
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Tab 5
BHV-5 Radionuclide Concentrations (uCi/ml)
1.00E-11
1.00E-12 ======================================================================================================
====================================================================================:=================
a;
iiuen
IIIooJ-
1.00E-13
1.00E-14
1.00E-15
1.00E-16
1.00E-17
-=
=
1.00E-18
~~~~~~~~#~~~~~~~~~~~~~~~~~~###########################
I-+-U-Nal -+-Th-230 --.-Ra-226 -+-Pb-210 I
Effluent Concentration Limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCi/ml
Pre 1994 MPC Limit =5E-12uCilml
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
BHV-5 Uranium Natural Concentrations (uCi/ml)
1.00E-11
1.00E-12
1.00E-13
"i"1.00E-14
;;;u
II)
<llo
::::!.1.00E-15
1.00E-16
1.00E-17
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------i
--------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------------------------
:::::::::::::::::J--4l---:--::::::::::---------------------4
=====~===========================================~=============================~====~===~===========-----------------------------------------------------------------------------------------------------
=====================================================================================================-----------------------------------------------------------------------------------------------------
1.00E-18
~"~'),~"o #~""~'O fi-~'O ~O)9.>'"9.>"9.>'),9.>"0 9.>l>9.>""9.>'0 i:'9.>'0 9.>0)5:>'"5:>"5:>'),5:>"0 ~5:>""5:>'0 -t-
~~~~~~~~~~~~~~~~~~~~~~~~~~~
==================================================::::=:========================================1.00E-11
Effluent Concentration Limit =2E-14 uCi/ml
ALARA Goal =5E-13 uCi/ml
Pre 1994 MPC Limit =8E-14uCi/ml
Pre 1994 ALARA Goal =2E-14 uCi/ml
BHV·5 Thorium-230 Concentrations (mCi/ml)
1.00E-12
1.00E-13
::::::::::::::::::::::::::=:======:::==:::=::::::::::::::::::::::::::::::::::::::::==:::=============
---------------------------------------------------==================================================
::::=================================================================================================
.,1.00E-14
~III
'"od.1.00E-15
1.00E-16
1.00E-17
==================================
-------~
===:=====::=======================================:::::::::::::::1-----------------------------------1
~=::=::::==:=====================================-
1.00E-18
~~~~~*~~#~~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
BHV-5 Radium-226 Concentrations (uci/ml)
1.00E-11
Effluent Concentration Limit =9E-13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
----===========================-----------------------------------------------------------------------=======---------------------
1.00E-12
1.00E-13
i \--------------------------------------------------
===========================:::::::=========:=:=:=:=:::::::::::::::::::::::_-----_::__::::::::::::::::-------------------------------------------------------------------------------------------------------_:_------_:::::::::::::::::::::::::_::::::::_:_--=)=~~~~~~~~~~~~~~~~:::::::::::~~:~~~~~~:~~~~~~~~~~~~~
===:::::::::::::::::::::::::::::::::::::::::::::::::::===:-----------------------------------------------------------------------------------------------------------------------
----------------------------------------------------------
I~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~f~~~~~~~~~~~1~II~~1 ~~~I~~~ff~
-----------------------------------------------------------------------------------------------------
'r~''"'''',n 'r'r ~p¥~~~'H'~""'J'!''''''''
-======--======================-==~:==========-==============::==:-=-===~~=~~=}f:
'i'Oiutil
'"~
1.00E-14
1.00E-15
1.00E-16
1.00E-17
------------------------------.-.---------------------~•1.-1"",',"'('~V'~--"""""--'rei'=:0:0====':0=~~~~:_:-~::_--~:_~-_:::__::::::::::::::::::_::::-::--------_:::--:::-:::I~-n-t\---------------------1------;--~-f --- ------~-~-f\-------------------
------
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1.00E-18
~~~#~~~~#~~~~~~~~~~~~~~~~~~###########################
1.00E-11
Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =4E-12 uCilml
Pre 1994 ALARA Goal =1E-12 uCi/ml
BHV-5 Lead-210 Concentrations (uCi/ml)
-.,
iiuUl
'"d.
1.00E-12
1.00E-13
1.00E-14
1.00E-15
1.00E-16
1.00E-17
-----------------------------------------------------------------------------------------------------
i
:::::::::::::::::::::::::::::::::::::::::::::::::~l---==-==-============-------======================9
__________________________________________________4 _
------------------------------------------------
1.00E-18
~~~#~~~~#~~~~~~~~~~~~~~~~~~###########################
Tab 6
BHV-6 Radionuclide Concentrations (uCi/ml)
1.00E-11 --------------------------------------------------------------------=========
1.00E-12 ======================================================================================================
..
~
II)
III
d
1.00E-13
1.00E-14
1.00E-15
1.00E-16
==========================================================:::=======:=:=:=:==:=:=::::::::::=:=::=:=:=:
---.----..-.--------------------....----------------------------- ----_..- - - ------- - --- - - -----========================================::::::::::=:====:============================
1.00E-17 ======================================================================================================
~<:)'0 5:>'0e,,0~)'/)<:'~1f.~~~~~~~~~~~~~~'/).:-:.e"ru<:)'/)<:'~'/).:-:.e"ru<:)'/)<:'~1iI C:Jru~)'/)<:'~'/).:-:.e"ru<:)'/)<:'~'/).:-:.",'"1:>'"<:)'l-",'l-",'l-",n,~'/).:-:.e"ru<:)'/)<:'~'/).:-:.e"ru<:)'/)<:'
c;»O:J "'<:)"'<:)5:><:)",'"
e"ru<:)'/)<:'~'/).:-:.e"ru~)'/)<:'
1.00E-18
1__U-Nal --Th-230 --Ra-226 --Pb-21 0 I
Efnuent Concentration Limit =9E-14 uCi/ml
ALARA Goal =2.25E-14 uCilml
Pre 1994 MPC Limit =5E-12uCi/ml
Pre 1994 ALARA Goal =1.25E-12 uCi/ml
BHV-6 Uranium Natural Concentrations (uCi/ml)
1.00E-11
1.00E-12
1.00E-13
'i'1.00E-14
Oiu<n
'"o::!.1.00E-15
1.00E-16
1.00E-17
======================================================:::::::::::::::::::::::::::::::::::::::::::::::----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
========================:====================:=:=:===================================================-----------------------------------------------------------------------------------------------------
::::::::::======::::::==:::::========================================================================-----------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------~-~~~-~-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
============================================================================::==:=:==================
1.00E-18
**~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~d ~~~d ~~~d ~~~G ~~~G ~~~d ~~~G ~~~G ~~~G ~,~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~#
Effluent Concentration Limit =2E-14 uCi/ml
ALARA Goal =5E-13 uCilml
Pre 1994 MPC Limit =8E-14uCilml
Pre 1994 ALARA Goal =2E-14 uCi/ml
BHV-6 Thorium-230 Concentrations (uCi/ml)
1.00E-11
1.00E-12
1.00E-13
..1.00E-14
iiiuIJl
'"o
::!.1.00E-15
1.00E-16
1.00E-17
V\~
~~~~~r·~~~V
1.00E-18
~~~~~~~~~~~~~~~~~~~~~~~~~~~###########################
1.00E-11
Effluent Concentration Limit =9E-13 uCi/ml
ALARA Goal =2.25E-13 uCi/ml
Pre 1994 MPC Limit =2E-12 uCi/ml
Pre 1994 ALARA Goal =5E-13 uCi/ml
BHV-6 Radium-226 Concentrations
i'toU(I)
Cl
d
1.00E-12
1.00E-13
1.00E-14
1.00E-15
1.00E-16
1.00E-17
I ,---------------------------------------
-------------------------------------------------------------------------------------------------------------------------------------------------------------------<
-----------------------------------------------------------------------------------------------------b _ _
=====================================================================================================
1.00E-18
~~~~~~~~~~~~~~~~~~~~~~~~~~~##~##~##~##~##~##~##~##~##~
Effluent Concentration Limit =6E-13 uCi/ml
ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA Goal =1E-12 uCi/ml
BHV-6 Lead-210 Concentrations (uCi/ml)
1.00E-11
1.00E-12 ======================================================================================================----------------------------------------------------------------
-------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------
--------------------------------------------1.00E-13
..1.00E-14
iii
ell
Clo
:::.1.00E-15
------;;..:::~
======================================================================================================
1.00E-16 ======================================================================================================
1.00E-17
1.00E-18
~~~~~~~~~~~~~~~~~~~~~~~~~~~####################~##~###
LOCAlIGt'UhV{l
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Attachment B
ENERGYLABORATORIES,INC.'2393Sail Creek Highway (82601),P.O.Box3258 'Casper,WY82602
Toll Free888.235.0515 '307.235.0515 'Fax [phone] '[e-mail]'wwwenergylab.com
IllGHVOLUME AIR SAMPLING REPORT
CLIENT:
REPORT DATE:
PROJECT:
SAMPLEID:
DENISON MINES
August 18,2008 .
2nd Quarter 21)08 EnvironmentalAir Samplhig
BHV-I
.
QuarterlDate Sampled Air Concentration Error L.L.D.Emuent %EffiuentRadionuclideEstimateCone.*Volume ~CUmL "CUmL ~CUmL uCUmL Concentration
C08040302·001 natu 1.14&16 N/A 1.00E·16 9.00E-14 1.26E·01
First Quarter 2008 230Th 1.13E-16 2.63E·17 1.00E-16 3.00E-14 3.76E·01
Air Volume in mLs 226Ra <1.00E-16 NfA 1.00E-16 9.00E-13 <1.1lE-02
1.36E+11 210Pb 6.44E-ll 3.81E-16 2,00E-15 6.00E-13 1.07E-+{)0
QuarterlDate Sampled Air Concentration Error L.L.D.Effluent %EmuentRadionuclideEstimateConc.*Volume /-lei/mL "CUmL ~CVmL "CUmL Concentmtion
C08070112-001 natu 7_09E·t6 N/A 1.00E-16 9.00E-14 7,88E-Ot
Second QUal1cr 2008 23'Th 3.83E-t6 1.03E-16 1.00E-16 3.00E-14 1.28E-+{)0
Air Volume in mLs 226Ra 2.27E.16 3.46E-17 1.00E-16 9.00E-13 2.53E·02
1.24E+11 210Pb 6.52E-15 4.78E-16 2,00E-15 6,OOE-13 1.09E+00
LLD's are from RegUlatory Guide 4.14
*Effluent Concentration provided by Denison Mines
ENERGY LABORATORIES,INC••2393SaIlCreek Highway(82601)•PO Box3258 •Casper,WY82602
7011Free 888.2350515 •307.2350515 •Fax [phone] •[e-mail] •WWly.energylab.com
LABORATORY ANALYTICAL REPORT
Client:Denison Mines (USA)Corp
Project:2nd Quarter Environmental Air
Lab 10:C08070112-001
Client Sample 10:BHV 1
Report Date:08118/08
Collection Date:04/01/08
DateReeelved:07/02108
Matrix:Filter
Analyses Result Units Qualifiers RL
MCU
QCL Method Analysis Date'By
TRACE METALS
Uranium
Uranium,Activity
RADIONUCLIDES.TOTAL
Lead 210
Lead 210 precision (±)
Lead 210 MOe
Radium 226
Radium 226 precision (±)
Radium 226 MDC
Thorium 230
Thorium 230 precision (t)
0.131
88.7
812
34.5
39.6
29.8
2.9
1.1
47.7
8.0
mglfiller
pCifFilter
pCilFtlter
pCilFilter
pCilFilter
pCilFilter
pCilFilter
pCuFi~er
pCilFitter
pCUFilter
0.0003
0.2
0.2
SW6020
SW6020
E909.0M
E909.0M
E90S.0M
ES03.0
E903.0
E903.0
E907.0
E907.0
0712710806:161 sml
07127/0806:161sml
0712210811:00Idm
07/22/08 11 :00 I dm
07122108 11:00 Idm
0712310812:431 Irs
07123/0812:43/trs
0712310812:4311rs
0712810820:101dmf
07128/0820:10 Idmf
~--------_.-_._-_.-
Report Rl ~Analyte reporting limit.
Deflnltlons:QCL.Quality control limit.
MDC .Minimum detectable concentration
Mel·Maximum contaminant level.
ND -Not detected at the reporting limit.
ENERGYLABORATORIES,INC.•2393Sal!CreekHighway(82601)•PO.Box3258 •Casper,WY82602
milFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energylab.com
Quartc."/Date Sampled Air Concentration Error LLD.Effluent %EffluentRadioDuciideEstimateCone."Volume ~CYmL ~CYmL ~CYmL ~CilmL Concentration
C08040302-OO2 ~'U <1.00&16 NIA l.ooE-16 9.00E-14 <I.IIE-OI
First Quarter 2008 '30nl <1.00E-16 NiA 1.00&16 3.00E-14 <3.33E-Ol
Air Volume in mL 226Ra <1.00&16 NIA l.ooE-16 9.00E-13 <1.11&02
1.37E+1I 210Pb 6.49E-15 3.82E-16 2.00&15 6.00&13 1.08E+OO
Quarter/Date Sampled Air Concentration Error LLD.Effluent %EffiuentRawoDudideEstimateCone.'"Volume ~CYmL ~CYmL "CYmL ~CYmL Concentration
C08070112-002 ~tu 1.29E-16 NIA 1.00E-16 9.00E-14 1.43E·01
Second Quarter 2008 23°111 <1.00&16 NIA 1.00E·16 3.00E-14 <3.33&01
Air Volume in mL 226Ra <1.00E-16 NIA 1.00E·16 9.00E-13 <I.IIE-02
1.34E+11 210Pb 4.82E-15 4.51E-16 2.00E-15 6.00E-13 8.03E-01
LLD's are from Regulatory Guide 4.14
'"Emuent Concentration provided by Denison Mines
!O.
ENERGYLABORATORIES,INC••2393SailCreek Highway(82601)•Po.Box3258 •Casper,WY82602
TollFree 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·IW/Il(enorgylab.com
LASORATORY ANALYTICAL REPORT
Client:
Project:
LabID:
ClientSample 10:
Denison Mines (USA)Corp
2nd Quarter Environmental Air
C08070112·002
BHV2
Report Date:08/18/08
Collection Date:04101/08
DateReeelvad:07102108
Matrix:Filter
---_._--~-----~..-.~.
Analyses Result Units
TRACE METALS
Uranium 0.0262 mg/filter
uranium,Activity 17.7 pei/FlIter
RADIONUCLIDES·TOTAL
Lead 210 648 pei/Filter
Lead 210 precision (±)32.6 pel/Filter
lead 210MOC 39.6 pCilFilter
Radium 226 8.4 pei/Filter
Radium 226 precls!on (±)1.6 pei/Filter
Radium 226 MDC 1.1 pCilFilter
Thorium 230 11.6 peilFitter
Thorium 230 precision (±)2.7 pei/Filter
Qualifiers RL
00003
0.2
0.2
MCW
'lCL Method
SW6020
SW6020
E909,OM
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907,0
E907.0
Analysis Date I By
07/2710806:24/sml
07/27/0806:24/sml
07/22108 11',001dm
07122/08 11 :00 I dm
07122/08 11:00 /dm
07123/0812:43/bs
07123/0812:43/trs
07/23/06 12:43/trs
0712810820:10/dmf
07128/0820:10 I dmf
Report RL -Analyte reporting limit
Definitions;OCL M Quality control Hmit.
MDC·Minimum detectable concentration
MCl v Maximum contaminant leveL
NO ~Not detected at lhe reporting limit.
141:ttW/
RitiliUhfi&llf'
ENERGYLABORATORIES,INC••2393SaIlCreekHighway (82601)•Po.Box 3258 •Casper.WY82602
liJlIFree 888235.0515 •807.285.0515 •Fax [phone] •[e-mail] •wwwenergylab.com
QuarterlDate Sampled Air Concentration Error LLD.Effluent %EffiuentRadiobuclideEstimateCone....Volume flCilmL ACilmL I'CilmL ACilmL Concentration
C08040302-003 ~IU 1.25E-16 NlA 1.00E-16 9.00E-14 l.39E-01
First Quarter2008 ~30Tll <1.00E-16 NIA 1.00E-16 3.00E-14 <3.33E-OI
Air Volume in mI.."'Ra <1.00E-16 NIA 1.00E-16 9.00E-13 <1.11E-02
1.36E+ll 2lOPb 4.09E-15 3.04E-16 2.00E-15 6.00E-13 6.81E-OI
QuarterlDate Sampled Air Concentration Error LLD.Effluent %EffluentRadioDudideEstimateCone....Volume flCilmL uCilmL I'CilmL uCilmL Concentration
C08070112-003 lutU 1.28E-IS NIA 1.00E-16 9.00E-14 1.42E+OO
Second Quarter 2008 230Th 7.72E-16 2.09E-16 1.00E-16 3.00E-14 2.57E+00
Air Volume inmL 126Ra 3.61E-16 4.30E-17 1.00E-16 9.00E-13 4.0IE-02
1.24E+11 2lOPb 1.I8E-14 S.73E-16 2.00E-IS 6.00E-13 1.97E+00
LLD's are from Regulatory Guide4.14
"Effluent Con{entration provided by Denison Mines
ENERGYLABORATORIES,INC.•2393Sah Creek Highway (82601)•Po.Box3258 •Casper,WY82602
TtJIIFree888.235.0515 •301.235.0515 •Fax [phone] •[e-mail]·wwwenergylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample ID:
Denison Mines (USA)Corp
2nd Quarter Environmental Air
C08070112-003
BHV4
Report Date:08118/08
Collection Date:04/01/08
DaleRecelved:07/02108
Matrix:Filter
Analyses Result Units Qualifiers RL
MCU
QCL Method Analysis Date 1By
TRACE METALS
Uranium
Uranium,Activity
RADIONUCLIDES -TOTAL
Lead 210
lead 210 precisloll {±}
Lead 210 MOC
Radium 226
Radium 226 precision (±)
Radium 226 MDC
Thorium 230
Thorium 230 precision (±)
0.235
159
1470
41.3
39.6
46.3
3.5
1.1
95.8
15.7
mglfiller
pCilFilter
pel/Filter
pCilFitter
pCUFilter
pCi/Fitter
pel/Fliler
pCilFilter
pCi/Filter
pCUFlller
0.0003
0.2
0.2
SW6020
SW6020
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
07/27/0806:28 I sml
07127/0806:28/sml
07122/08 11:00 /dm
07122108 11:00 I dm
07122108 11:00/dm
07/23/0812:43/Irs
07/23/0812:43 I Irs
07123/08 12:43/1"
07128/08 20:10 /dmf
07/28/0820:10/dmf
Report Rl .Analyte reporting limit.
Definitions:QCL ~Quality control limit.
MDC ~Minimum delectable concentration
Mel -Maximum contaminant level.
ND ~Not detected at the reporting limit.
ENERGYLABORATORIES,INC••2393Sal!Creek Highway (82601)•Po.Box 3258 •Casper,WY 82602199r:{({g~Toll Free 888.235.0515 •301235.0515 •Fax [phone] •[e-mail] •www.energylab.com
,,'tiliJi&-P-Ull.#.'
QuarterJDate Sampled Air Concentration Error LLD.Effluent %EffluentRadionuclideEstimateCone.'"Volume "Ci/mL uCIImL "Ci/mL uCi/mL Concentration
C08040302-004 n.tu 3.16E-16 N/A 1.00E-16 9.00E-14 3.51£-01
First Quarter 2008 "'Th 6.17E-16 4.26E-17 1.00E-16 3.00E-14 2.06E+OO
Air Volwne inmL 226Ra 3.70E·16 3.67£-17 1.00E-16 9.00E-13 4.11E-02
1.36E+1l 2lOPb 4.82E-15 1.75E.16 2.00E-15 6.00E-13 8.03E-OI
Quarter/Date Sampled Air Concentration Error LLD.Effluent %EmuentRadionuclideEstimateCooc.'"Volume "Ci/mL uCi/mL ~Ci/mL uCi/mL Concentration
C08070112-004 mtU 3.13E-15 N/A 1.00E-16 9.00E-14 3.48E+00
Second Quarter 2008 ""Th 1.55E-15 2.30E-16 1.00E-16 3.00E-14 5.15E+OO
Air Volume inmL 216Ra 9.27£-16 4.20E-17 1.00E-16 9.00E-13 1.03E-OI
1.33E+II 2l1lPb 7.40E-15 2.73E-16 2.00E-15 6.00E-13 1.23E+~0
LW's are from Regulatory Guide 4.14
•Effluent Concentration provided by Denison Mines
ENERGYLABORATORIES,INC••2393Sail CreekHighway (82601)•P.o.Box 3258 •Casper,WY82602
To#Free 888.235051"•301235.0515 •Fax [phone] •[e-mail]·YlWW.Bnergylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
LablD:
ClientSample ID:
Denison Mines (USA)Corp
2nd Quarter Environmental Air
COB070112-004
BHV5
ReportDale:OB/18/0B
Collection Date:04/01/08
DaleRecelved:07/02/0B
Matrix:Filter
Analyses Result Units Quallfl(lrs RL
MCU
QCl Method Analysis Date I By
TRACE METALS
Uranium 0.618 mgffiller
Uranium,Activity 418 pel/Filter
RADlDNUCLlDES·TOTAL
lead 210 986 pCilFilter
Lead 210 precision (:1:)36.4 peVFilter
lead 210 MOe 39.6 pCilFilter
Radium 226 125 pCilFilter
Radium 226 precision (±)5.6 pCifFilter
Radium 226 MDC 1.1 pCilFilter
Thorium 230 206 pCilFilter
Thorium 230 precision (f)30.6 pCilFilter
0.0003
0.2
0.2
SW6020 0712710806:33/sml
SW6020 07/27/0806:33/sml
E90S.0M 07/22108 11:00 I dm ..
E909.0M 0712210811:001 dm
E909.0M 07122108 11:001 dm
E903.0 07123/08 12:43/trs
E903.0 07/23/08 12:43/trs
E903.0 07/23/08 12:43/trs
ES07.0 07128/0820:101 dmf
E907.0 0712810820:101 dmf
Report RL ~Analyte reporting limit.
Definitions:QCL -Quality control limit.
MDC -Minimum detectable concentration
MeL M Maximum contaminant level.
NO ~Not detected at the reporting limit.
ENERGYLABORATORIES,INC••2393SaltCreekHighway(82601)•Po.Box3258 •Casper.WY82602
Toll Free 888.235.0515 •301.235.0515 •Fax [phone] •[e-mail] •www.energylab.com
IllGH VOLUME AIR SAMPLING REPORT
CLIENT:
REPORT DATE:
PROJECT:
SAMPI.ElD:
DENISON MINES
August 18,2008
2nd Quarter 2008 Environmental Air Sampling
BHY-6
Qu.arterlDateSampled Air Concentration Error L.L.D.Effluent
Radionuclide Estimate Cone.1<%Effiuent
Volume ~CUmL uCUmL J1CilmL ..CUmL Concentration
C08040302-005 natu 4.34E-16 N/A 1.00E-16 9.00E-14 4.83E-OI
Pirst Quarter 2008 "'Th 3.5IE-16 3.38E-17 1.00E-16 3.00E-14 1.I7E+00
Air Volume in mLs
226Ra <l.ooE-16 N/A 1.00E-16 9.00E-13 <I.11E-02
1.36E+1I 2!OPb 5.99E-15 1.94E-16 2.ooE-15 6.00E-13 9.98£-01
Quarter/DateSampled Air Concentration Error L.L.D_Effluent %EffiuentRadiOIJuclideEstimateCone.·VolulU~~CUmL "CUmL JlCilmL ..CUmL Concentration
C08070112·005 natu 1.88E-15 N/A 1.00E-16 9.00E-14 2.09E+00
Second Quarter 2008 230nl 9.00E·16 1.43E-16 1.00E-16 3.00E-14 3.00E+00
Air Volume in mLs 22°Ra 4.04E-16 2.85E-17 1.00E-16 9.00E-13 4.49E-02
1.33E+11 210Pb 7.4IE-15 2.73E-16 2.00E-15 6.00E-13 1.24E+00
LLD's llrc from Regulatory Guide 4.J4
..Effluent Concentration provided by Denbon Mines
ENERGYLASORATORIES,INC••2393Sail Creek Highway (82601)•P.O.Box3258 •Casper,WY82602
Toll Free 8882350515 •307.235.0515 •Fax [phone] •[e-mail] •www:energylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
lab 10:
Client Sample 10:
Denison Mines (USA)Corp
2nd Quarter Environmental Air
C08070112-005
BHV6
Report Dale:08/18108
Coliection Dale:04/01108
DateReceived:07/02108
Matrix:Filter
SW6020 07/2710806:37 I sml
SW6020 07/27/0800:37 I8ml
E909.0M 0712210811:00 Idm :--;
E909.0M 07122108 11:00 Idm
E909.0M 07/22/0811:00/dm
E903.0 07/23/0812:43/tr5
E903.0 07/23/0812:431lrs
E903.0 07/23/0812:43/trs
E907.0 0712810820:10 Idmf
E907.0 07128/0820:10 I dmf
Analyses Result Units
TRACE METALS
Uranium 0.371 mglfilter
Uranium,Activity 251 pel/Filter
RADIONUCLIDES -TOTAL
lead 210 988 pei/Fllter
Lead 210 precision (±)36.4 pei/Filter
Lead 210 MOe 39.6 pei/Filter
Radium 226 55.4 pC!lFilter
Radium 226 precision (±)3.8 pei/Filter
Radium 226 MDC 1.1 pei/Fitter
Thorium 230 120 pei/Fllter
Thorium 230 precision (±)19.1 pei/Finer
Qualifiers RL
0.0003
0.2
0.2
MCU
QCL Method Anatysis Date I By
:."
Report RL ~Analyte reporting limit.
Definitions:QCL _Quality control limit.
MDC -Minimum detectable concentration
Mel~Maximum contaminant level.
ND -Not detected at the reporting limit
ENERGYLABORATORIES,INC••2393Sail Creek Highway(8260/)•P.D Box3258 •Casper,WY82602
7011Free 888.235.0515 •307.235.0515 •Fax [phone] •[e-mail]·wwwenergylab.com
mGH VOLUME AIRSAMPLING REPORT
CLIENT:
REPORT DATE:
PROJECT:
SAMPLEID:
DENISON MINES
August 18,2008
2nd Quarter2008 Environmental Air Sampling
BLANK
Quarter/Date Sampled Air Concentration Error L.L.D.Effluent %EffluentRadionuclidcEstimateConc.*Volume ~CilmL uCilmL ~CilmL uCilmL Concentration
C08040302-006 n9fU <1.00E-16 NIA 1.00E-16 9.00E-14 <1.l1E-01
First Quarter 2008 230Th <1.00E-16 N/A 1.00E-16 3.00E-14 <3.33E-01
Air Volume in mLs 226~<1.00E-16 NIA 1.00E-16 9.00E-13 <I.lIE-02
210Pb
_.
1.36E+II <2.00E-15 N/A 2.00E-15 6.00E-13 <3.33E-OI
Air Volume for Blank assumed to be nominal ofSamples,136,000,000 rAters.
QuarterIDatc Sampled Air Concentration Error L.L.D.Effluent %EffluentRadionuclidcEstimateConc.*Volume ~Ci!mL uC;tmL ~CilmL uCilmL Concentration
C080701l2-006 flatu <1.00E-16 NlA 1.00E-16 9.00E-14 <!.l1E-OI
Second Quarter 2008 nOnl <1.00E-16 N/A 1.00E-16 3.00E-14 <3.33E-OI
Air Volume in mLs 226Ra <1.00E-16 N/A 1.00E-16 9.00£-13 <!.lIE-OZ
1.308+11 210Pb <2.00E-15 NIA 2.00E-15 6.00E-13 <3.33E-01
Air Volume for Blank assumed to be nommal ofSamples;130,000,000 Lifers.
LLD's are from Regulatory Guide 4.14
*Effluent Concentration provided by Denison Mines
ENERGYLABORATORIES,INC••2393Sail Creek Highway (82601)•P.O.Box 3258 •Caspe"WY82602
TollFree 888235.0515 •307.235.0515 •Fax [phone] •[e-mail]·wwwenergylab.com
LABORATORY ANALYTICAL REPORT
Client:Denison Mines (USA)Corp
Project:2nd Quarter Environmental Air
Lab 10:C08070112·006
Client Sample 10:Blank
Report Date:08/18/08
Collection Date:08130108
DateReceivBd:07/02108
Matrix:Filter
Analyses
TRACE METALS
Result Units Qualifiers RL
MCU
QCL Mothod Analysis Date I By
Uranium
Uranium,Activity
RADIONUCLlDES·TOTAL
Lead 210
Lead 210 precision (:t)
Lead 210 MOe
Radium 226
Radium 226 precision (±)
Radium 226 MOe
Thorium 230
Thorium 230 precision (±)
0.0019 mglfilter
1.3 pCUFiller
·16.0 pCjjFHter U
23.4 pCilFilter
39.6 pCilFilter
1.1 pCIIFilter U
0.8 pel/Filter
1.2 pel/Filter
02 pCi/Filter U
0.5 pCjJFilter
0.0003
0.2
0.2
SW6020
SW6020
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
E907.0
E907.0
0712710806:53 f sml
07/27/0806:531 sml
07122108 11:00 1dm
07/2210811:00/dm
07122108 11:001 dm
Q7123t08 12:43/trs
Q7123f08 12:43 f trs
07123108 12:43'trs
07128/0820:10 {dmf
07128/0820:101 dml
-----_..~..
"".
Report RL -Analy!e reporting limit.
Definitions:aCl~Quality control limit.
MOe ~Minimum detectable concentration
Mel ~Maximum contaminant level.
ND ~Not detected al the reporting limit.
U-Not detected at minimum detectable concentration
li%OlY~~ENERGYLABORATORIES,INC.•2393Sa/tCreekHighway (82601)•P.O.Box3258 •Casper,WY82602.....·:aif/),701/Free 888.235.0515 •30i:235.0515 •Fax 30i:234.t639 •casper@energy/ab.com·ww",energy/ab.comRtn.,mij_tNl¥'
ANALYTICAL SUMMARY REPORT
August 18,2008
Denison Mines (USA)Corp
6425 S Hwy 191
Blanding,UT 84511
Workorder No.:C08070112
Project Name:2nd Quarter Environmental Air
Energy laboratories.Inc.received the following 6 samples from Denison Mines (USA)Corp on 71212008 for analysis.
Sample 10 Client Sample 10 Collect Date Receive Date Matrix Test -------
C08070112-001 BHV 1 04/01/0800:0007102/08 Filter Composite of two or more samples
Melals,Tolal
DigesUon,Total Melals
Lead 210
Radium 226
Thorium,isotopic....._._.
C08070112-002 BHV 2 04/01/0800:0007102108 Filter Same As Above
C08070112-003 BHV 4 04/01/0800:00 07102/08 Filter Same As Above
~---_._..
C08070112-004 BHV 5 04/01/0800:00 07/02/08 Filter Same As Above..._.._..._-._._..•_-------_._---
C08070112-005 BHV 6 04101/0800:00 07102/08 Filler Same As Above
C08070112-006 Blank 06/30108 00:00 07102/08 Filter Same As Above-------_..._.---_._---_..._..~-_._._._---
As appropriate,any exceptions or problems with the analyses are noted in the Laboratory Analytical Report.the
QAlQC Summary Report,or the Case Narrative.
If you have any questions regarding these tests results,please call.
Report Approved BY~a>1t£7t7"''''=-_
SIEVE CARI.SlllN
ENERGYLABORATORIE8,INC.•2393SallCreekHigIJway(8260lj •Po.Box3258'Caspe,WY82602
7iJIIFree888.2350515 •30123505/5 •Fax [phone] •[e-mail]·wwwenergylab.com
QA/QC Summary Report
Client:
Project:
Denison Mines (USA)Corp
2nd Quarter Environmental Air
Report Date:08118/08
Work Order:C08070112
[...•.
IAnalyte
Method:E9D3.0
Sample10:C08D70377-o05AMS
Radium 226
Result Units
Sample Matrix Spike
74.6 pCi/Filter
RL %REC LowLimit High Limit
Run:TENNELEC-3_080717A
94 70 130
RPD RPDLlmlt Qual
Batch:19124
07/2310814:56
Sample 10:C08070377-o05AMSD
Radium 226
Sample 10:LCS-19124
Radium 226
Sample 10:MB-19124
Radium 226
Method:E907.0
Sample Matrix Spike Duplicate
70.5 pCilFiltor
Laboratory Control Sample
14 pC,L
Method Blank
0.2 pCi/L
Run:TENNELEC-3_080717A
90 70 130 5.7
Run:TENNElEC·3_080717A
83 70 130
07/2310814:56
22
07123108 14:56
07/23/0B 14:56
U
Balch:19124
Sample10:C08070112-o06AMS
Thorium 230
Sample10:C08070112-o06AMS2
Thorium 230
Sample 10:LCS-19124
Thorium 230
Sample 10:MBM19124
Thorium 230
Method:E909.0M
Sample 10:C08070112-o03AMS
Lead 210
Sample Matrix Spike Run:EGG-ORTEC_080722A
177 pCi/Filter 0.20 106 70 130
Sample Matrix Spike Run:EGG-ORTEC_080722A
87.3 pCi/Filter 0.20 94 70 130
Laboratory Control Sample Run;EGG-ORTEC_OS0722A
41.5 pCi/Filter 0.20 85 70 130
Method Blank Run;EGG-ORTEC_080722A
-0.1 pCl/Filter
Sample Matrix Spike Run;PACKARD 3100TR_OS0722A
2870 pCilFilter 119 70 130
0712810820:10
07/29/0809:57
0712910809;58
0712910819:59
U
Batch:19124
07/22108 11:00
Sample 10:COB070112-o03AMSD Sample Matrix Spike Duplicate Run:PACKARD 3100TR_080722A 07122/08 11:00
lead 210 2290 pCilFiller 69 70 130 23 30 S
•Spike response is outside ofthe acceplance range forthis anatysis.Since the lCS and the RPD for lheMS MSDpair<;Ire acceptable,the response is considered tobe
matrix related.Thebatch isapproved.
Sample 10:MB-Rl05681 Method Blank Run:PACKARD 3100TR_080722A 07/22108 11:00
lead 210 2 pCi/L U
SamplelD:LCS-R105681 Laboratory Control Sample Run;PACKARD 3100TR_080722A 07/22108 11:00
Lead 210 120 pCi/L 97 70 130
._-_._~._---------------------
Qualifiers:
RL ~Analyte reporting limit.
S ~Spike recovery outside of advisory limits.
NO -Not detected at the reporting limit.
U -Not detected at minimum detectable concentration
ENERGYLABORATORIE5,INC.•2393SaltCreekHighway(8260lj 'PO Box3258 •Casper,WY82602
TollFree888.2350515 •307.2350515 •Fax [phone] •[e-mail]·www.energylab.com
QA/QC Summary Report
Client Denison Mines (USA)Corp Report Dale:08/18/08
Project:2nd Quarter Environmental Air Work Order:C08070112
I Result Units %REC Low limit IIAnalyt&RL High limit RPD RPOLimit Qual
I ~,
Method~SW6020 Balch:19124
Sample 10:MB·19124 Method Blank:Run:ICPMS2-C_080715A 0711610808:22
Uranium 3E·05 mg/l lE-05
Sample ID:LCS1-19124 Laboratory Control Sample Run:ICPMS2-C_080715A 07/16108 08:26
Uranium 0.0488 m91L 0.00030 93 75 125
Sample 10:C08070354-001EMS Sample Matrix Spike Run:ICPMS2-C_080715A 0711610808:47
Uranium 0.0159 mglL 0.00030 112 75 125
Sample 10:C08070354-001EMSD Sample Malrix Spike Duplicate Run:ICPMS2-C_080715A 07/1610808:51
Uranium 0.0153 mg/L 0.00030 108 75 125 3.7 20
Qualifiers:
RL·Analyte reporting limit.ND ~Not detected at Ihe reporting limit.
bfU(~Chain of Custody and Analytical Request Record
U'.:/_/;tifi.';O:S:.PLEASE PRINT,provide as much information as possible.Refer to corresponding notes on reverse side.
Page-i-Of-L
Company N~iPrOJecIN;(,e.PWS #,Permit #.Etc.:..
t \ )P.\I\.;<.,""",",M,i>I\L\/)'"(JJV>LJ-S.O EV\,,;,u,A'M£"'~tLn
Report Mail Address'.Contact Name,Phone,Fax,&mail:-----Sampler Namlidfotherthan Contact:PO·&x S"6C((43S')
JP)OAtll<AO r,or xL/S"{{12.'\Illv\OfWlwh"t:7--'i<:222 I
~.'"il\~I2JC tg~t "1K 227 I..-:.
InvoiceAddress::..::r-~TJnvoice-Contact &Phone #:U IPurchase Order#:I ELI Quote#:
S:;.A
z.....
Iw10MI"-:l.t"\\\2_
>j
Notify Eli prior to RUSH Shipped by:
sample submittal for additional UBSA~rd
charges and scheduling COM(S)53 r;_Comments:
J:~\<Receipt ~~~§~~J,C
I-'~11 CustodY Seal®N!;(~E Intact V (QN
UJ ~F Signature Y®w e iii Matchw!i ~blD
AN4('vjSlf:;~E41U~$"Elb
dl~-
DWO
I
(
4-1-01>1 J\lJ411~-.4
Report Required For:
'!LIlli Lj.
POTWIWWrPO
Other _
Special Report Formats -Ellmust be notified prior to
sample submittal for the following:
NELAC 0 A2LAO Level IV 0
l5~OE
"HI>*':ffi ~>l~§~:20!U<§.i:>.
'0 8.~~:n ~·o ~
Other -e i ~~I
EDD/EDT 0 Format :it Jl ;]11
SAMPLE IDENTIFICATION Collection ilJ
(Name,Location,Interval,etc.)TIme MATRIX
2 \z'ii\l '1
1 RIl\l 1
4~t+V f::
5 '{z.\.\-\1 L,
•13\1111\\l
L
1~~o&llJfA-lis:II
I~
>-I~
7
•
t I~
0::.....
9 -aJ
'"L'.<:1.>~;;~llfJO 16,..-s"fll
Lab Disposal:
,':AShl;;~-tll,Y\e~11YZ:;"wmm'iO:,~O
"
Custody
Record
MUST be
Signed
R9IiP:::(~~11I.
Relin"qtiiSfi<!-bi"-{pri'nI):
Sample Disposal:
5ale!Tlmo:
Return to dient
f Slg'naturo:R""""odby (prijlo --J
Sample Type;
OalelTuna:
LABORATORY USE ONLY
#of fractions
.......I
j L_s~n'atura:
,J.-,'~
Incertain c1rcumsUlnces,samples submitted to Energy.Laboratories,Inc.maybe :subcontractedtoother certified laboratoriesinorderto complete the analysis requestad.
Thisserves as notice ofthis posslbillty.All sub-contract data will be crearly notated onyouranalytical ntport.
Visitour web site at www.energylab.comfor additional information,downloadable fee schedule.forms,&links,
:-:j:;
Energy Laboratories Inc
Workorder Receipt Checklist
Denison Mines (USA)Corp
11~~I!~i~I~I~I~III~I~IG
C08070112
Login completed by:Kimberly Humiston
Reviewed by:
Reviewed Date:
Date and Time Received:7/2/2008 10:30 AM
Received by:ah
Carrier name:Ground
ShIpping container/cooler in good condition?
Custody seals intact on shippIng container/cooler?
Custody seals intact on sampfe bottles?
ChaIn ofcustody present?
Chain ofcustody signed when relinquished and received?
Chain ofcustody agrees with sample labels?
Samples in proper container/bottle?
Sample containers intact?
SuffICient sample volume for indicated test?
AU samples received Within holding time?
Containerffemp Blank temperature in compliance?
Water ~VOA vials have zero headspace?
Water -pH acceptable upon receipt?
Ves 0
Ve,0
Ves 0
Ve,0
Ve,0
Ve,0
Ves 0
Ves 0
Ves 0
Ves 0
Ves 0
Ves 0
Ves 0
No 0
NoD
No 0
No 0
NoD
No 0
NoD
No 0
No 0
No 0
No 0
NoD
NoD
Not Present 0
Not Present 0
Not Present 0
NINe
No VOA vials SUbmitted 0
Not Applicable 0
:".'
~.._~~.~-~_~~-~.~~-----------..-----..---..-~-------~--..----_._-_.-----~---~----------_.._.._--.._-----~.._--..~~.._~..__..__~..-
------~~_.._----_.._....-.._-.._---------_.._---~~._..-...._---.._~..----__...._...._~-------------..__.._------_...._-----~--~--__-----
Contact and Corrective Action Comments:
None i>
1_
ENERGY LABORATORIES,INC.•2393Sail CreekHighway(82601)•Po.Box3258 •Casper,WY82802ltih....::(({f:'i~Toll Free 888.2350515 •301.2350515 •Fax [phone] •[e-mail]·www.energylab.com
"[e-mail],if
Date:IS-Aug-OS------_.-
CLIENT:Denison Mines (USA)Corp
Project:2nd Quarter Environmental Air
Sample Delivery Group:C08070112
CASE NARRATIVE
THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT
ORIGINAL SAMPLE SUBMITTAL{S)
All original sample submittals have been returned with the data package.
SAMPLE TEMPERATURE COMPLIANCE:4'C (±2'C)
Temperature of samples received may not be considered properly preserved by accepted standards.Samples that are
hand delivered immediately after collection shall be considered acceptable ifthere is evidence that the chilling process
has begun.
GROSS ALPHA ANALYSIS
Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low IDS waters.Data provided
by this method for non potable waters ShOUld be viewed as inconsistent.
RADON IN AIR ANALYSIS
The desired exposure time is 48 hours (2 days).The time delay in returning the canister to the laboratory for processing
should be as short as possible to avoid excessive decay.Maximum recommended delay between end ofexposure to
beginning of counting should not exceed 8 days.
SOIUSOLID SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE.SIMAZINE AND PCB ANALYSIS USING EPA 505
Data for Atrazine and Simazine are reported from EPA 525.2,not from EPA 505.Data reported by Ell using EPA method
505 reflects the results for seven individual Aroclars.When the results for all seven are NO (not detected),the sample
meets EPA complfance criteria for PCB monitoring.
SUBCONTRACTING ANALYSIS
SUbcontracting ofsample analyses to an outside laboratory may be required.If so,ENERGY LABORATORIES will utilize
its branch laboratories or qualified contract laboratories for this service.Any such laboratories will be indicated wi1hin the
Laboratory Analylical Report.
BRANCH LABORATORY LOCATIONS
eliMb -Energy Laboratories,Inc.-Billings,MT
eH-g -Energy Laboratories.Inc.-Gillette,WY
eli-h -Energy Laboratories,Inc.-Helena,MT
eli·r ~Energy laboratories,Inc.~Rapid City,SO
eli·t ~Energy Laboratories,Inc.-College Station,TX
CERTFICATIONS:
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Oregon:WY200001;Utah:3072350515;Virginia:00057;Washington:C1903
ISO 17025 DISCLAIMER:
The results of this Analytical Report relate only to the items submitted for analysis.
ENERGY LABORATORIES,INC.-CASPER,WY certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities.Some results requested by the client may not be covered
under these certifICations.All analysis data to be submitted for regUlatory enforcement should be certified in the sample
state of origin.Please verify ELI's certification coverage by visitingWVAY.energylab.com
ELI appreciates the opportunity to provide you with this analytical service.For additional information and services visit our
web page WWN.energylab.com.
£N£RGYLASORArOfll£S,INC.'2393SailCreek Highway (82601),P.O.Box:j21i8 •Casper,WY82602
..7011Free 888.2S/h0515 'sur ,0515'Fax 307:234.16S9 'casper@energylab.('wWfl<ene(qylab.com
HIGH VOLUME AIRSAMPLING REPORT
CLIENT:
REPORTDATE:
PROJECT:
SAMI'LEID:
DENISON MIN&~
i"fay 29,2008
1st Qu<\rter 2008 EnvirGnmcotl'll Air Sampling
BHV-l
QUllrtcrlDntc Sampled Air Concentration Error L.L.D.Effluent %EffluentRadionuclidcEstimateCone.'"Volume p.CilmL lCilmL p.CilmL .CilmL Concentration
C08040302-00l n~IU 1.14E-16 N/A 1.00E·16 9.00E·14 1.26E-OI
:230n1
-----
First Quarter 2008 1.13E-l6 2.63E-l7 1.00E·16 3.00E-14 3.76E·OI
Air Volume in mLs 2uRa <I.OOE·l6 N/A I.OOE·16 9.00E·13 <I.IIE·02
1.36E+1I 2WPb 6.44E·l5 3.8IE·l6 2.00E·15 6.00E-13 1.07E+OO
LLD's llrc from Regulatory Guide 4.14
'"Effluent Concentration provided by Denison Mines
£N£RGYLASORA TORIES,INC,•2393Sail Creek Highway(82601)•P.O,Box$.258·'Casper.WY82602
,TollFree 888.235.0515 •30r ',0515 •Fax [phone] •casper@energylab{•wm.ener9ylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample 10
Denison Mines (USA)Corp
1st Quarter Enviromenlal Air
C08040302·001
BHV1
Report Date:05/29108
Collection Date:01/01/08
DateReceived:04107108
Matrix:Filter
Analyses Result Units Qualifiers RL
MCU
QCL Method Analysis Date I By
15.9 pei/Filter
TRACE METALS
Uranium,Activity
RADIONUCUDES·TOTAL
Lead 210
Lead 210 precision (±)
Thmium 230
Thorium 230 precision (±)
Radium 226
Radium 226 precision (f)
Radium 226 MOe
879 pei/Filter
27.5 pCilFilter
15.4 pel/Filter
2.5 pei/Filter
2.6 pel/Filter
1.7 pei/Filter
2.4 pei/Filter
0.2 SW6020 04/28f08 02:17 Its
1,0 E909.0M 04117108 10:30 Idm
E909,OM 04117/08 10:30 I dm
0.2 E907.0 04/17/0815:351 dmf
E907.0 04/17/0815:35 fdmf
E903.0 04/2410815:291 Irs
E903.0 04124108 15:29 IIrs
E903.0 04/24/0815:29/lrs
Report RL P Analyle reporting limit.
Definitions:Qel.Quality conlrollimit.
MDe -Minimum delectable concenlrallon
._-----_.__.-.-____-._.__.•..
MeL ~Maximum contaminant level.
ND -Not detected at the reporting limit.
£N£RGYLABORArOR/£S,INC.•2393Sal/Creek IfJgnway(82b'O/J'P.O.Box3258 •Casper,WY82602
,ToflFree888.235.0515·So;r·~0515'FaxS07.234.f639·casper@energylabJ ·www.energy/ab.com'.\
QU:ll'fcr/Dafe Sampled Air Concentration Error L.L.D.Effluent %EtlIucntRlldionuclidc.Estimate CODe."Volume ,.CilmL uCilmL uCilmL uCi/mL Concentration
C08040302·002 Il~tu <J.00E-16 N/A J.OOE·J6 9.00E-14 <1.11&01
First Qmuter 2008 130Th <LOOE-16 N/A LOOE-16 3.00E-14 <3.33E-01
Air Volume in mL.226Ra <J.00E·16 NlA LOOE-16 9.00E-13 <l.IIE-02
1.37E+ll 1wPb 6,49E-15 3.82E-16 2.00E-15 6.00E-J3 I.08E+OO
LLD's nre from Regulatory Guide 4.14
"Effluent Concentration provided by Denison Mines
ENERGYLABORATORIES,INC..2393Sail CreekHighway (82601)•P.o.Box3258 •Casper,WY82602
.ToIIFree888.235.0515·307'-;.0515'Fax [phone] •casper@energylab.(··www.energylab.com,.,
LASORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample10
Denison Mines (USA)Corp
1st Quarter Enviromental Air
C0804030Z·00Z
BHVZ
ReportDate:05/Z9/08
Collection Date:01101108
DateReceived:04107/08
Matrix:Filter
MGL!
Analyses Result Units Qualifiers RL QCL Method Analysis Date I By
TRACE METALS
Uranium,Activity 8.0 pCi/Fitter 0.2 SW6020 0412810802:21 Its
RADIONUCLIDES.TOTAL
lead 210 886 pCifFilter 1.0 E909.0M 04/17/0810:30fdm
lead 210 preclsJon (±)Z7.6 pClfFilter E909.0M 0411710810:30/dm
Thorium 230 5.3 pei/Filter 0.2 E907.0 04/17/0815:35 {dmf
Thorium 230 precision (±}1.5 pCi/Fiiler E907.0 04117/0815:35/dmf
Radium 226 1.4 pCifFilter U E903.0 04124108 15:29/lrs
Radium 226 precision (±)1.8 pCl/Filter E903.0 04J24f08 15:29 f trs
Radium 226 MOe 2.8 pCilFllter E903.0 04/24/08 15:29 Jtrs
Report
Definitions:
RL -Analyte reporting limit.
QCL-Quality contfOllimit
Moe ~Minimum delectable concentration
MCL-Maximum contaminant level.
NO·Not detected at the reporting limit.
U•Not detected at minimum delectable concentration
ENERGYLABORATORIES,iNC.'2393Sail Creek HigJllvay(82601)'P.O.BoxIP58 'Casper.WY82602
TollFree 888.235.0515 •30?('0515'Fax [phone] •casper@energylab.q .www.energylab.com
Quarter/Date Sampled Ail'Concentration.Error L.L.D.JUfhlcnt %EffluentRlIdiobUclide:Eslinllltc Cone,'"Volume ,.cUmL uCUmL "CUmL uCUmL Concentf:ltion--.._..__..._--"---
C08040302-003 "'tv 1.25&16 NlA 1.00E-16 9.00E-14 1.39E-Ol
First Quarter 2008 23011\<1.00&16 NIA 1.00E-16 3.00E-14 <3.33E-Ol
Air Volume in.mL 226Ra <1.00&16 NIA 1.00E-J6 9.00E-13 <I.lJE-02
l.36E+1I 1J(JPh 4.09&15 3.04E-16 2.00E-J5 6.00E-13 6.8lE-Ol._----_.•
LLD's are from Regulatory Guide4.14
'"Effluent COllccntralion provided by Denison Mines
ENERGY LABORATORIES,iNC.•2393 Sal/Creek Hi9hway (82801)•100 Box 3258 •Casper.WY82B02
liJIIFree888.2S5.0515·30l("0515'Fax[phone]·casper@energylab.(.'wv~"energylab,com
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample 10
Denison Mines (USA)Corp
1st Quarter Enviromental Air
C08040302·003
BHV4
Report Dale:05/29108
Colleclion Dale:01/01/08
DateReceived:04/07/08
Matrix:Filter
--.."---_...-
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date I By
TRACE METALS
Uranium,Activity 17.4 pei/Filter 0.2 SW6020 04128/0802:25/1s
RADIONUCLIDES -TOTAL
Lead 210 557 pei/Filter 1.0 E909.0M 04117/08 10:301 dm
Lead 210 precision (±}21.9 pCiJRlter E909.0M 04/17/0810:301 dm
Thorium 230 9,1 pCiJFilter 0.2 E907.0 04117/0815:35/dmf
Thorium 230 precision (±)2,0 pei/Filter E907.0 04/17108 15:351 dmf
Radium 226 1.9 pCi/FiJler U E903.0 04124/08 15:291 Irs
Radium 226 precision (±)1,8 pCi/Filter E903.0 04/24/0815:29/1r5
Radium 226 MOe 2.7 pCilFiller E903.0 04124/0815:29/lr5
._--.-.._------------
Report RL .Analyte reportIng limit.
Definitions:Qel·Quality confrollimit
MOG·Minimum detectable concentration
Mel·Maximum contaminant level.
ND •Not detected at the rep0l1ing limit.
U~Notdetected at minimum detectable concentration
ENERGYLABORATORIES,INC.•2393Sail Creek Highway(82801)•PO.Box 3258 •Casper.WV82802
TollFree 888235.0515 •307.(9515 •Fax [phone] •casper@energylab.c(wwwenergyJab.com
QU31'(Cl'JDate Sampled Air Concentration Error L.L.D.Eftlllollt %EffluentR"di<lllUclidc Estimnte Cone.'"Volume ~CilmL uCilmL ~CilmL .CifmL Concentration
C08040302-004 mIl)3.16E-16 NlA 1.00E-16 9.00E-14 3.5IE-OI
First Quarter 2008 "'Th 6.17E-16 4.26E-17 1.00E·16 3.00E-14 2.06E+00
Air Volume inmL 226Ra 3.70E-16 3.67E-17 1.00E-16 9.00E-13 4.lIE-02
1.36E+II 21°Pb 4.82[;·15 1.75E-16 2.00E-15 6.00E-13 8.03E-OI
Lill's aTC from Regulatory GUicle4.14
x Efilncnt Concentration Jll'ovided by Denison Mines
u;;r .'fk,W'JI ENERGYLABORATORIES,INC.•2393SailCreek Highway (82601)•1".0.Boy8258 •Casper,WV82602
/f.!ditt!{(OOifi liJlIFree 888.235.0515 •301(1515 •Fax [phone] •casper@energylab.c(www.energylab.com
Q!':;t4"Uh'i'''Ji"¥j'
LASORATORY ANALYTICAL REPORT
Client:
Project:
LoblD:
ClientSample JD
Denison Mines (USA)Corp
1st Quarter Enviromental Air
C08040302·004
BHV5
ReportDate:05/29/08
Collection Date:01101/08
OateReceived:04/07/08
Matrix:Filter
MCL!
Analyses Result Units Qualifiers HL QCL Method Analysis Date I By
TRACE METALS
Uranium,Acllvity 43.4 pCilFilter 0.2 SW6020 04/28/0802:29/Is
RADJONUCUDES·TOTAL
Lead 210 657 pel/Filter 1.0 E9OO.0M 04/17/08 10:30 I dm
Lead 210 precision (±)23.8 pCi/Fllter E9OO.0M 04/17/06 10:30 I dm
ThQrium 230 84.1 pCi/Filler 0.2 E907.0 04/17/08 15:35/dmf
Thorium 230 precision (±)5.8 pCilFilter E8D7,O 04/17/0815:35/dmf
Radium 226 51.9 pCifFilter E903.0 04124/08 15:29/trs
Radium 226 precision (±)5.0 pei/Filter E903.0 04124/08 15:291 trs
Radium 226 MDC 2.6 pCifFilter E903.0 04/24/08 15:29 f trs
Report RL M Analyte reporting limit.
Definitions:QCL _Quality controllimiL
MOe -Minimum detectable concenlratlon
---_._--_._.._._----------
MeL -Maximum contaminant level.
NO·Not detected at the reporting limit.
ENERGYLABORATORIES,INC.•2393Salt CreekHighway (82801),P.O.Box32.58 •C15.0er,WY82802
TollFree888.235.0515 •307.(1515 •Fax [phone] 'casper@energY/ab.c(www.energylab.com
UIGH VOLUME AIRSAMPLING REPORT
CLIENT:
REPORT DATE:
PROJECT;
SAMPLEID:
DENISON MINES
Mlly29,200S
1stQuarter2008 EnvironmentalAirSampling
BHV-G
Quarter/Date Sampled Air Concentnltion Error L.L.D.Effluent %EffluentRadionuclideEstimateConc.~Volume 1!Ci/mL uCilmL JlCi/mL JlCi/mL Concentration
C08040302-005 natU 4.34E-16 N/A 1.00E-16 9.00£-14 4.83E·OI
First Quarter 2008 230Th 3.5IE-16 3.38E-17 1.00E-16 3.00E-i4 1.17E+OO
Air Volume in mLs 226Ra <1.00E-16 N/A 1.00E-16 9.00E-13 <1.11£·02
1.36E+11 2JOPb 5.99E-15 1.94E-16 2.00E-15 6.00E-13 9.98£-01
LLD'sarefrom Regulatory Guide4.14
*EffluentConcentration provided by Denison Mines
ENERGYLASaRATORIES,{NC••2393Sail CreekHighway (82801)•AD.Box 3258 •Casper.WY82602
Toll Free 888235.0515 •307/'f]515'Fax [phone] •casper@energylab.q''www.energyJab.com
LASORATORY ANALYTICAL REPORT
Client:
Project:
LablD:
ClientSample ID
Denison Mines (USA)Corp
1st Quarter Enviromental Air
COB040302-005
BHV6
Report Date:05/29/08
Collection Date:01/01/08
DateReceived;04/07/08
Matrix:Filter
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date /By
TRACE METALS
Uranium,Activity 59.6 pCI/Filter 0,2 SW6020 04/28/0802:33/ts
RADIONUCLIDES.TOTAL
Lead 210 816 pel/Filter 1.0 E909.0M 04/17/08 10:30 1dm
Lead 210 precision (±)26.5 pCilFilter E909.0M 04/17/08 10:30/dm
Thorium 230 47.9 pCI/Filter 0,2 E907.0 04/17/0815:351dmf
Thorium 230 precision (±)4.6 pei/Filter E907.0 04117/0815:351dmf
Radium 226 11.5 pCi/Filter E903.0 04/24/08 15:29 /Irs
Radium 226 precision (±)2,6 pCI/Filter E903.0 04/24/08 15:29/1r5
Radium 226 MDC 2.4 pCI/Filter E903.0 04/24/08 15:291 trs
Report RL w Analyte reporting limit.
Definitions:QCL -Quality controllimil.
MDC •Minimum detectable concentration
MCl-Maximum contaminant level.
NO·Not detected at the reporting limit.
ENERGYLABORATORIE5,INC.•2393SaltCredHighway(82601)•Po.Box 3258 •Casper,WY82802
llJllFree 888.235.0515 •307(.fJS15 •Fax [phone] •casper@energylab.c(www.energylab.(:om
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
ClientSample ID
Denison Mines (USA)Corp
1st Quarter Enviromental Air
C08040302-006
Blank
Report Date:OS/29/08
Collection Date:03/31/08
DateReceived:04/07/08
Matrix:Filter
.------------
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date1By
TRACE METALS
Uranium,Activity 0.4 pCi/Filter 0.2 SW6020 04/28/08 02:50 f Is
RADIONUCLIDES ~TOTAL
lead 210 0.0 pCi/Filter 1.0 E909.0M 04117108 10:30 f dm
lead 210 precision (±)1.3 pCilFilter E9090M 04/17/0810:30 f dm
Thorium 230 0.4 pCi/Filter 0.2 E907.0 04/17/08 15:35/dmf
Thorium 230 precision (±)0.8 pCi/Filter E907.0 04/17/08 15:35/dmf
Radium 226 -0.4 pCilFilter U E903.0 04/24/08 15:291trs
Radium 226 precision (±)1.5 pCI/Filter E903.0 04124/08 15:291 trs
Radium 226 MDe 2.6 pCiJFilter E903.0 04/24/08 15:29/trs
Report
Definitions:
Rl -Analyte reporting limit.
QCL -Quality control limit.
MDe •Minimum detectable concentration
Mel-Maximum contaminant level.
ND -Not delected at the reponing limit.
U •Not delected at minimum detectable concentration
ENERGYLABORATORIES,INC.•2393Salt Creek Highway (82601)•RD.Box (1258 'Casper,WV82802
;TollFree 888.235.0515 •30{.'S:0515 •Fax [phone] •casper@energylab.(•www.energylab.com
ANALYTICAL SUMMARY REPORT
May29,2008
Denison Mines (USA)Corp
64258 Hwy 191
Blanding,UT 84511
Workorder No.:C08040302
Project Name:1st Quarter Enviromental Air
Energy Laboratories,Inc.received the follOWing 6 samples from Denison Mines (USA)Corp on 4/712008 foranalysis.
Sample 10 ClientSample 10
COB040302-001 BHV 1
CollectDate Receive Date Matrix
01/0110800:00 04/07/08 Filter
Test
Metals,Total
Digestion,Total Melals
Lead 210
Radium 226
Thorium,Isotopic
8ame As Above
Same As Above
Same As Above
Same As Above
Filter
Filter
Filter
01/01/0800:00 04/07/08 Filter
01/01/0800:00 04/07/08--------------_.._.._------_._._--------
01/01/0800:00 04/07108
----------------------------------------
01/0110800:00 04/07/08
COB040302-002 BHV 2
COB040302-003 SHV 4
COB040302-004 BHV 5
C08040302-005 BHV 6
C08040302-006 Blank 03/31/0800:00 04/07/08 Filter Same As Above
As appropriate,any exceptions orproblems with the analyses are noted in the Laboratory Analytical Report,the
QNQC Summary Report,or the Case Narrative.
If you have any questions regarding these tests results,please call.
Report Approved By:.k~STEVECARLSTON
ENERGYLABORATORIES,/NC••2393SaltCreekHighway(82601)•P.O.Box3258 •Casper,WY82802
lOll Free 888.235.0515 •307.(l)515'Fax [phone] •casper@energylab.c(.www.energylab.com
QA/QC Summary Report
Client:Denison Mines (USA)Corp
Project:1st Quarter Enviromental Air
Report Date:05/29/08
Work Order:C08040302
rAnalyte
l
Result Units RL %REC Low Limit High Limit
---.
RPD RPDLimit Qual
Method:E90S.0
Sample 10:C08040356-001AMS
Radium 226
Sample to:C08040356-001AMSD
Radium 226
Sample to:MB·18283
Radium 226
Sample ID:LCS-18283
Radium 226
Method:E907.0
SampleMatrix Spike
70.7 pCi/Filter
Sample Matrix Spike Duplicate
60.7 pei/Filter
Method Blank
-3 pCilL
Laboratory ControlSample
11 pCilL
Batch:18283
Run:BERTHOLD 770_080417A 04/2410815:29
111 70 130
Run:BERTHOLD 770_080417A 04/24108 17:25
95 70 130 15 26.7
Run:BERTHOLD 770_080417A 04/25108 07:03
U
Run:BERTHOLD 770_080417A 04/25108 07:03
98 70 130
Batch:18283
Sample ID:C08040302-005AMS SampleMatrix Spike Run:EGG-ORTEC_OB0417C 04/1710815:35
Thorium 230 75.7 pCVFilter 0.20 68 70 130 S
•Spike response is outside ofthe ae<:eptance range for this analysis.Since the LeS and the RPD fot the MS MSD pairare acceptable,the low response isconsidered to be
matrix related.The I>atch is approved.
Sample 10:C08040302·005AMSD SampleMatrix Spike Duplicate Run:EGG-ORTEC_080417C 04/1710815:35
Thorium 230 79.7 pel/Filter 0.20 69 70 130 5.1 30 S
•Splke response is outsideofthe acceptance range for this analysis.Since the LeS and the RPD for the MS MSD pair are acceptable,the low response is considered to be
matrixrelated.The batch is approved.
Sample to:LCS-R100216
Thorium 230
Sample 10:MB-R100216
Thorium 230
Method;E909.0M
Laboratory Control Sample
49.0 pCilFilfer
Method Blank
0.1 pei/Filler
0.20
Run:EGG-ORTEC_080417C
102 70 130
Run:EGG-ORTEC_080417C
04/17/0815:35
04/17/0815:35
Batch:18283
Sample 10:C08040302-001AMS Sample Matrix Spike Run:PACKARD3100TR_080417A
Lead 210 1550 pCi/Filter 1.0 57 70 130
-Spikeresponse Is outside ofthe acceptance range for this analysis.Since the LeS and theMSDare aexeptable the batch is approved.
04117/0810:30
S
:.,
f,
Sample 10:C08040302·001AMSD
Lead 210
Sample 10:MB-R100552
Lead 210
Sample ro:LCS·R100552
Lead 210
Sample Matrix Spike Duplicate
2300 pei/Filler
Method Blank
ND pCi/L
Laboratory Control Sample
130 pCilL
1.0
1.0
Run:PACKARD 3100TR_080417A
120 70 130 39
Run:PACKARD 3100TR_080417A
Run:PACKARD 3100TR_080417A
106 70 130
04/17108 10:30
30 R
04/17/08 10:30
04/17108 10:30
Qualifiers:
RL -Analyte reporting limit.
R·RPDexceeds advisory limit.
U·NotdeteGled at minimum detectableconcentration
ND-Notdetected at the reporting limit.
S -Spike recovery outside ofadVisory limits.
ENERGYLABORATORIES,INC••2393SaltCreek Highway(82601)•P.O.Box 3258 •Casper,WY82602
TaUFree 888.235.0515 •307.('.0515 •Fax [phone] •casper@energylab.c(.www.energylab.com
QA/QC Summary Report
Client:Denison Mines (USA)Corp
Project:1st QuarterEnviromental Air
Report Date:05/29/08
Work Order:C08040302
Analyle Result Units RL %REC Low Limit High Limit RPO RPOLimil Qual
Method:SW6020 Batch:18283
Sample 10:MB-18283 Method Blank Run:tCPMS2-C_080427A 04128108 02:00
Uranium ND mglfiller 6E-05
Sample ID:LCS1-18283 laboratory Control Sample Run:ICPMSZ-C_080427A 04128/08 02:04
Uranium 0.0509 mglfilter 0.00030 97 75 125
Sample 10:C08D4D520-001AMS Sample Matrix Spike Run:ICPMS2-C_080427A 04128/08 04:00
Uranium 0.0497 mgffilter 0.00030 99 75 125
Sample ID:C0804052D-001AMSO Sample Matrix Spike Duplicate Run:tCPMS2-C_080427A 04128/08 04:04
Uranium 0.0500 mglfilter 0.00030 100 75 125 0.6 20
Qualifiers:
Rl-Analyte reporting limit.ND -Not detected atthe reporting limit.
Lt:t~CJV
IIfI12r·l"];7.:,U-];/I4>'1I
Chain of Custody and Analytical Request Record
PLEASE PRINT,provide as much information as possible,Refer to corresponding notes on reverse side.
Page--'-Of-1-
Company Name:
fJr>/V)~~A )Y1Il,:.-.&~
ReportMmrnOdreSS:D J~&-61r:v.I:>~
.5.L'IA..{;~/A--)f5'i.(s /I
Invoice Address:______
>,A·"....c
ProjectName,PWs#,Permit #,Etc.:
I ~(J".0-P~ff/L ~/.Jlnin.IAAh.L'h-i J::1,~
Contact Name,Pllone,Fax,E-mail:.-Sampler Name ifotherthan Contact:
7)~$S--""'nt-,.2-2z..!
;:::y/..N-PeJlM£/'"~"*'"Z'ZZ i('I)LJJVO/Lh/tAJ ~IA-.'<:..nJ..~I ~,y.._(ClI""".
l:s:~t:~~:~~~r,.(,~-'~zz /Pu-rchase'brder#:-I ELI Quote #:
Report Required For:POTWIWWTP 0 OW O,g E Notify Ell prior to RUSH Shipped by:_\
Other ~~~sample submittal for additional uesAg5 2.~
.s >ar....charges and scheduling Cooler 10(s)
SpecIal Report Formats -ELI must be notified prior to ~~~I ~0 Ct·l?:oX:'
sample submittal for the following:0 :>;g 01 W i=;~ommen s.,,-()«0 ,.,i<l:f-"R e't iTiNELAC0A2LA0LevelIV0'0 ~~~:c ~~ec IP'!emp~~·O'"UC:'O l'1 o c<ll (/)fO ~;;;)§
Other -OE %OJ 051 ~*e Custody se§NE-1-:<:'"EOD/EOT 0 Format ~'"~I «5 E Intact N
(I}.=~~Signature Y N
SAMPLE IDENTIFICATION Collection «I [tI e ~Match L
(Name.Location.Interval,etc.)Time MATRIX (/)i!~Lab 10
1 J5 f!V I li-/-o55 111/4 113·.4 1\1~11\11\/1 I I I I I I I I I~
2 J<IfV 2.I T I I Ij 5 -tLI Y1\II VI VI I__J I I I LI I I~
3 j~uv Lj I / I I \;3·J4 /1\\~I AI ~\ \ I I I I I I I I~
4 f?,J.f\f s I'I I Ir~,A II~~II\I/\I I I I II III I~
5 _RI-f V b I \t I/ IL~·1-\II H\1 I \I \1 I I I I I I I I I >-
1::bIt14K ~~J3-A _Ig ~
8
9
{(Ji)b40~0:::.............-m
LABORATORY USE ONLY#of fractions
10
Custody
Record
MUST be
Signed
R~s::(pr~1.
RelinqJishedby (print):
Sample D[sposal:
Oalernme:
-"i.f~}.0 'is'jill/.,,""
Oalemme:
Return to client:
-;i19IJjISlgndlure:
Lab Disposal:
Receivedby(prinl):
7l'SJ11JLrl-t:u.Jne.<..
Received by(Prl.::::JV
Sample Type:
DatefITma:
4.~f),-1'9l q!.?-l\
Datenime:
I:)
Sign"atura:-LL.IA.
Sig
In certain circumstances,samples submittedtoEnergy LaboratorIes.Inc.may be subcontractedto othercertified laboratorIesin orderto complete the analysis requested.
This serves asnoticeofthis posslblllty.All SUb-contract data will beclearly notated on youranalytical report
Visit our web site at www.energyfab.comfor additional information,downloadable fee schedule,forms,&links.
Energy laboratories Inc
Workorder Receipt Checklist
Denison Mines (USA)Corp
(
IIIIII~IIIII~~'II~III~I~IIIIIIII~~"III ~III~
C08040302
Login completed by:Jennifer McVay
Reviewed by:
Reviewed Date:
Date and Time Received:4/712008 9:30 AM
Received by;ah
Carrier name:2nd Day Air
Shipping container/cooler In good condition?
Custody seals intact on shipping container/cooler?
Custody seals intacton sample bottles?
Chain of custOdy present?
Chain ofcustody signed when relinquished and received?
Chain of custody agrees with sample labels?
Samples in proper container/bottle?
Sample containers intact?
Sufficient sample volume for indicated test?
All samples receivedwithin holding time?
Containerffemp Blank temperature in compliance?
Wafer -VOA vials have z.ero heaclspace?
Water -pH acceptable upon receipt?
~0
~0
~D
~s0
~0
~0
~0
~0
~0
~0
~0
~sO
~O
NoD
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
Not Present 0
NotPresent 0
Not Present 0
'C NA
No VOA vials submitted 0
Not Applicable 0
::::::::::::::::::::::::::::=::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
Contact and CorrectiveAction Comments:
None
ENERGYLABORATORJE~INC.•2393SaltCreek Highway(82601)•RD.Box3~58 •Casper,WY82802
.76//Free 888.235.0515 •J07.21j15 •Fax [phone] •[e-mail](vww.energylab.com.,
Date:29-May-08
CLIENT:Denison Mines (USA)Corp
Project:1st Quarter Enviromental Air
Sample Delivery Group:C08040302
CASE NARRATIVE
THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT
ORIGINAL SAMPLE SUBMITTAL(S)
All original sample submittals have been returned with the data package.
SAMPLE TEMPERATURE COMPLIANCE:4"C (±2"C)
Temperature of samples received may not be considered properly preserved by accepted standards.Samples that are
hand delivered immediately after collection shall be considered acceptable ifthere is evidence that the chilling process
has begun.
GROSS ALPHAANALYSIS
Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters.Data prOVided
by this method for non potable waters should be viewed as inconsistent.
RADON IN AIR ANALYSIS
The desired exposure time is 48 hours (2 days).The time delay in returning the canister to the laboratory for processing
should be as short as possible to avoid excessive decay.Maximum recommended delay between end of exposure to
beginning of counting should not exceed 8 days.
SOIUSOLID SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE.SIMAZINE AND PCB ANALYSIS USING EPA 505
Data for Atrazine and Simazine are reported from EPA 525.2,not from EPA 505.Data reported by ELI using EPA method
505 reflects the results for seven individual Aroclors.When the results for all seven are ND (not detected),the sample
meets EPA compliance criteria for PCB monitoring.
SUBCONTRACTING ANALYSIS
SUbcontracting of sample analyses to an outside laboratory may be required.Ifso,ENERGY LABORATORIES will utilize
its branch laboratories or qualified contract laboratories for this service.Any such laboratories will be indicated within the
LaboratoryAnalytical Report
BRANCH LABORATORY LOCATIONS
eli-b -Energy Laboratories,Inc.-Billings,MT
eli-g·Energy Laboratories,Inc.-Gillette,W(
eli-h -Energy Laboratories,Inc.-Helena,MT
eli-r -Energy Laboratories,Inc.-Rapid City,SD
eli·t -Energy Laboratories,Inc.-College Station,TX
CERTFICATIONS:
USEPA:W(00002;FL-DOH NELAC:E87641;Arizona:AZ0699;California:02118CA
Oregon:WY200001;Utah:3072350515;Virginia:00057;Washington:C1903
ISO 17025 DISCLAIMER:
The results ofthis Analytical Report relate only to the items submitted for analysis.
ENERGY LABORATORIES,INC.-CASPER.WY certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities.Some results requested by the client may not be covered
under these certifications.All analysis data to be submitted for regulatory enforcement should be certified in the sample
state of origin.Please Verify Ell's certification coverage by visiting W1NW.energylab.com
ELI appreciates the opportunity to provide youwith this analytical service.For additional information and services visit our
web page www.energylab.com.
Jlu~urq~unv
Period:March 31,2008 through June 30,2008 (2nd Quarter 2008)page 1
BHV-1 onstream %91.3%BHV·1 Total Volume:4.40E+06
loading,Per CentTotalTotalStartStop
TNT,G
Stop
Dat
Start
Oat
Week Filter
~''''''''UJw'....u~...lJl;I\Q 'VIV.;;l.;J ._.'"....................................,.v,'"...I"'U ~11 .....Uu...,...........'..,
I 7816749 31-Mar-08 7-Apr-08 4.6582 4.4840 0.1742 2683.6 2518.0 9939.0 10,272,602 0.0170 98.6%36.5
2 7816743 07-Apr·08 14·Apr·08 4.6466 4.5036 0.1430 2854.1 2683.6 10230.0 10,718,210 0.0133 101.5%37.0
3 7816737 14--Apr-08 21-Apr-08 4.9013 4.5226 0.3787 3025.0 2854.1 10255.2 10,744,612 0.0352 101.7%37.0
4 7816731 21.Apr-08 2S.Apr.OS 4.S096 4.5550 0.2546 3189.3 3025.0 9856.8 10,327,199 0.0247 91.8%37.0
5 7816725 28-Apr-08 5·May-D8 4.9126 4.5699 0.3427 3358.2 3189.3 10131.6 10,615,114 0.0323 100.5%37.0
6 7816719 OS-May-08 12-May-08 4.5689 4.5605 0.0084 3358.2 3358.2 0.6 629 13.3623 0.0%37.0
7 7816713 12-May.08 19-May-OB 4.69B6 4.5550 0.1436 3525.4 33582 10031.4 10,481,726 0.0137 99.5%36.9
B 7816707 19-May-08 26-May-OB 4.7626 4.5513 0.2113 3697.5 3525.4 10329.0 10,792,686 0.0196 102.5%36.9
9 7816701 26-May-08 2-Jun·08 4.7068 4.5573 0.1495 3839.2 3697.5 8498.4 8,879,907 0.0168 84.3%36.9
10 7821195 02-Jun-08 9-Jun-08 4.5928 4.4363 0.1565 4008.5 3839.2 10161.6 10,531,448 0.0149 100.8%36.6
11 7821189 09-Jun-0&16-Jun-08 4.65S6 4.4442 0.2114 4176.5 4008.5 10079.4 10,389,173 0.0203 100.0%36.4
12 7B21183 16-Jun-OB 23-Jun-08 4.6439 4.4540 0lB99 4342.2 4176.5 9938,4 10,243,839 0.01&5 98.6%36.4
13 7821177 23-Jun-08 30-Jun-08 4.8090 4.5567 0.2523 4511.9 4342.2 10182.0 10,494,926 0.0240 101.0%36.4
Totals 91 2184.0 4.7205 4.5192615 0.2012 119633.4 124,492,070 1.0471 91.3%36.8
BHV-2 on stream%98.6%BHV·2 Totai Volume:4.75E+06
!~.
Loading,PerCentTotalTotalStartStop
TG
Stop
D;
Startt,
Week Filter
#N"'IIIVQI LoIUl........a~1;I VIV;:)';'101'11;1','I::a ~II110 IIIIIQ 111110 LI~t:lI~It'"lIv UIJ ~utl'atll o.JvrlV,
1 7816748 31-Mar-08 07-Apr-08 4.6725 4.4939 0.1786 12883.7 12719.7 9839.4 10.169.659 0.0176 97.6%36.5
2 7816742 07-Apr-08 14-Apr·08 4.7231 4.5046 0.2185 13054.1 12883.7 10225.2 10,713,181 0.0204 101.4%37.0
3 7816736 14-Apr-08 21-Apr-08 4.9046 4.4853 0.4193 13225.1 13054.1 10260.0 10,749,641 0.0390 101.8%37.0
4 7816730 21-Apr-D8 28-Apr-D8 4.9145 4.5480 0.3665 13389.4 13225.1 9856.8 10,327,199 0.0355 97.8%37.0
5 7816724 28-Apr-08 05-May-08 4.9245 4.5729 0.3516 13558.2 13389.4 10129.2 10,612,599 0.0331 100.5%37.0
6 7816718 05-May-08 12-May-08 4.9140 4.5605 0.3535 13725.3 13558.2 10025.4 10,503,846 0.0337 99.5%37.0
7 7816712 12-May-D8 19-May-OB 4.7750 4.5691 0.2059 13890.3 13725.3 9904.2 10,348,816 0.D199 98.3%36.9
8 7816706 19-May-08 26-May-08 4.8020 4.5645 0.2375 14061.4 13890.3 10266.0 10,726,858 0.0221 101.8%36.9
9 7821200 26·May-D8 02-Jun·08 4.6945 4.4242 0.2703 14203.1 14061.4 8501.4 8,883,042 0.0304 84.3%36.9
10 7821194 02-Jun-08 09-Jun-D8 4.6826 4.4111 0.2715 14369.2 14203.1 9963.0 10.325.619 0.0263 98.8%36.6
11 782118S 0!}-Jun-08 16-Jun·08 4.9677 4.4027 0.5650 14537.3 14369.2 10086.6 10,396,594 0.0543 100.1%36.4
12 7821182 16-Jun-08 23-Jun-D8 4.9012 4.4591 0.4421 14702.9 14537.3 9933.6 10,238,892 0.0432 98.5%36,4
13 7821176 23-Jun-08 30·Jun-08 4.9653 4.5403 0.4250 14872.6 14702.9 10187.4 10,500,492 0.0405 101.1%36.4
Totals 91 2184.0 4.833962 4.502785 0.3312 129178.2 134,496,437 0.0320 98.6%36.8
BHV-4 on slream %91.0%BHV-4 Total Volume:4.38E+06
Week Filter Start Stop Stop Start Total Tolal Loading,Per Cent
~"U11IUO;:;;'I.JO\....LJc;;J\....\oJIV,;:l;;J 1010 ,,,'[;.;\''''''"''UII...11111'101 l-'\l~I,;;;I ...11110.......",'-J\J-';;;~'"...,.OJ',n
1 7816747 31-Mar-08 07-Apr-08 4.6940 4.4764 0.2176 2684.1 2519.3 9888.6 10,220,510 0.0213 98.1%36.5
2 7816741 07-Apr-08 14-Apr-08 4.5314 4.5169 0.0145 2700.2 2684.1 967.8 1,013,987 0.0143 9.6%37.0
3 7816735 14-Apr-08 21-Apr-08 4.9052 4.4903 0.4149 2865.3 2700.2 9901.8 10,374,347 0.0400 98.2%37.0
4 7816729 21-Apr-08 2a-Apr-08 4.8489 4.5499 0.2990 3029.4 2865.3 9847.8 10,317,770 0.0290 97-7%37.0
5 7816723 2B-Apr-OB 05-May·08 4.8979 4.5612 0.3367 31972 3029.4 10071.0 10,551,622 0.0319 99.9%37.0
6 7816717 05-May-08 12-May.08 4.8518 4.5732 0.2786 3366.9 3197.2 10177.2 10,662,890 0.0261 101,0%37.0
7 7816711 12-May-08 19-May-08 4.6989 4.5465 0.1524 3533.1 3366.9 9976.2 10,424,048 0.0146 99.0%36,9
8 7816705 19-May-08 26-May-08 4.7849 4.5589 0.2260 3725.1 3533.1 11520.6 12,037,779 0.0188 114.3%36.9
9 7821199 26-May-08 02-Jun·08 4.6094 4.4321 0.1773 3870.2 3725.1 8704.8 9,095,573 0.0195 86.4%36.9
10 7821193 02-Jun-08 09-Jun·08 4.5637 4.4121 0.1510 4040.5 3870.2 10218.6 10,590,522 0.0143 101.4%36.6
11 7821187 09-Jun-08 16-Jun-08 4.6757 4.4192 0.2565 4204.7 4040.5 9851.4 10,154,165 0.0253 97.7%36.4
12 7821181 16-Jun-08 23-Jun-08 4.6852 4.4888 0.1964 4342.2 4204.7 8247.6 8,501,075 0.0231 81.8%36.4
13 7821175 23-Jun-08 3Q-Jun-08 4.8679 4.5378 0.3301 4506.3 4342,2 9847.2 10,149,836 0.0325 97.7%36.4
Totals 91 2184.0 4.739608 4.504869 0.2347 119220.6 124,094,124 0.0239 91.0%36.8 ..,.
SHV-5 on stream %97.7%BHV-S Total Volume:4.71 E+06
Week Filter Start Stop Stop Start Total Total Loading,Per Cent.......,,,............u~~L.o"UlV _J,",v~'lO'llv ,"....,•"tiC ..".~I ........~,............~""v .....,......,'.......,................
1 7816746 31-Mar-08 07-Apr-08 4.7267 4.4862 0.2405 12800.8 12636.0 9882.6 10,214,309 0.0235 98.0%36.5
2 7816740 07-Apr-08 14-Apr-08 4.7032 4.5223 0.1809 12956.9 12800.8 9369.6 9,816,749 0.0184 93.0%37.0
3 7816734 14-Apr-08 21-Apr-08 4.9148 4.4783 0.4365 13128.2 12956.9 10276.2 10,766,615 0,0405 101.9"A.37.0
4 7810728 21·Apr·08 28-Apr-OS 4.9162 4.5652 0.3510 13292.3 13128.2 9849.6 10,319,656 0.0340 97.7%37.0
5 7816722 2a-Apr-08 05-May-08 4.9496 4.5516 0,3980 13460.4 13292.3 10082.4 10,563,566 0.0377 100.0%37.0
6 7816716 05-May-08 12-May-08 4.8454 4.5527 0.2927 13629.9 13460.4 10172.4 10.657,861 0.0275 100.9%37.0
7 7816710 12-May-08 1!}-May-08 4.8378 4.5035 0.2743 13795.5 13629.9 9931.8 10,377,655 0.0264 98.5%36.9
8 7816704 19-May-08 26-MaY·08 4.7970 45555 0.2415 13987.4 13795.5 11515.8 12,032,763 0.0201 114.2%36.9
9 7821198 26-May-08 02-Jun-08 4.5553 4.3907 0.1646 14132.1 13987.4 8684.4 9,074,257 0.0181 86.2%36.9
10 7821192 02-Jun--Qa 09-Jun-Oa 4.6455 4.4407 0.2048 14302.8 14132.1 10239.6 10,612,287 0.0193 101.6%36.6
11 7821186 09-Jun-D8 16-Jun-08 4.7552 4.4634 0.2918 14467.0 14302.8 9850.2 10,152,928 0.0287 97.7%36.4
12 7821180 16-Jun-OB 23-Jun-08 4.7063 4.4830 0.2233 14604.7 14467.0 8265.0 8,519,010 0.0262 82.0%36.4
13 7821174 23-Jun-D8 30-Jun-08 4.8341 4.5400 0.2941 14708.8 14604.7 9846.6 10,149,218 0.0290 97.7%36.4
Totals 91 2184.0 4.783623 4.507162 0.2765 7797800 127966.2 133,256,873 0.0269 97.7%36.8
Period:March 31,2008 through June 30,2008 (2nd Quarter 2008)PagfJ 2
BHV-6 on stream %97.7%BHV-6 Total Volume:4.71E+06
Week Fmer Start Stop Stop Start Total Total loading.Per Cent
rr •'WUII11.,1'1;I1 l,J.n...""UL~VIV;;lI..,101t;;;•n;·L "",,;,;.""..,...11...........,"='."""'~"II"'""'"....\1.......'".........1'...
1 7816745 31-Mar-08 07-Apr-08 4.6924 4.4888 0.2036 12447.6 12282.9 9885.0 10,216,789 0.0199 98.1%36.5
2 7816739 07-Apr-08 14-Apr-08 4.7047 4.5394 0.1653 12603.8 12447.6 9370.2 9,817,377 0.0168 93,0%37.0
3 7816733 14-Apr-08 21-Apr-08 4.9026 4.4708 0.4318 12775.1 12603_8 10277.4 10,767,872 0.0401 102.0%37.0
4 7816727 21-Apr-08 28-Apr-08 4.8782 4.5752 0.3030 12939.3 12775.1 9849.6 10,319,656 0.0294 97.7%37.0
5 7816721 28-Apr-08 05·May-08 4.8562 4.5459 0.3103 131072 12939.3 10076.4 10,557,279 0,0294 100.0%37.0
6 7816715 05-May·08 12-May-08 4.8175 4.5589 0.2586 13276.8 13107.2 10173.0 10,658,490 0.0243 100.9%37.0
7 7816709 12-May-Oa 19-May-08 4.7187 4.5684 0.1503 13442.6 13276_8 9948.6 10,395,209 0.0145 98.7%36.9
8 7816703 19-May-08 26·May-08 4.7957 4.5867 0.2090 13634.5 13442.6 11517.6 12,034,644 0.0174 114.3%36.9
9 7821197 26-May-08 02-Jun·08 4,5303 4.3788 0,1515 13779.5 13634.6 8694.0 9,084,288 0.0167 86.2%36.9
10 7821191 02-Jun-08 09·Jun-08 4.5902 4.4614 0.1288 13949.9 13779.5 10228.8 10,601,094 0.0121 101.5%36.6
11 7821185 09-Jun-08 16-Jun-06 4.6414 4.4257 0.2157 14114.1 13949.9 9849.0 10,151,692 0.0212 97.7%36.4
12 7621179 16-Jun·08 23-Jun-08 4.7391 4,5646 0.1745 14251.9 14114.1 8267.4 8,521,484 0.0205 82.0%36.4
13 7821173 23-Jun-08 30-Jun-08 4.7943 4.5568 0.2375 14416.0 14251.9 9846.6 10,149,218 0.0234 97.7%36.4
Totals 91 2184.0 4.743177 4.517031 0.2261 127983.6 133,275,091 0.0220 97.7%36.8
I;'
ALL BHV on stream %95.2%
\.!..Net
Stop
Date
Start
Date
Week
#Blanks ....._.................••Y •
1 7816744 31-Mar-08 07-Apr-08 4.4850
2 7816738 07-Apr-08 14-Apr·08 4.5404
3 7816732 14-Apr·08 21-Apr-08 4.5444
4 7816726 21-Apr-08 28-Apr-08 4.5629
5 7816720 28-Apr-08 05-May-08 4.5605
6 7616714 05-May-08 12-May-08 4.5530
7 7816708 12-May-08 19-May-08 4.5773
8 7816702 19-May-08 26-May-08 4.5791
9 7821196 26-May-08 02-Jun-G8 4.4008
10 7821190 02-Jun-G8 09-Jun-08 4.4308
11 7821184 09·Jun·08 16-Jun-08 4.4406
12 7821178 16-Jun-08 23-Jun-08 4.5672
13 7821172 23-Jun-08 30-Jun-08 4.5676
Totals 91 2184.0 4.5238
.";.,;
Period:,Jartua~y 1,2008 through March 31 ~~08 (1st Quarter2008)
BHV-l onstream %100.0%BHV·1
;:
TotaYVolume:4.82E-f06
Page 1
Week Rller Start Stop Stop Start Tolal Tolal loading,PerCent
If '-"UHlUt:1 UdU;::UdU::\:IllJ:::>~fodl't:.'tCL IUIle"1111)'"IUIlW'L.f\"-'-.J ...,'I,.......,11 '.....u""",...............y.
I 7816027 31-D",,-07 7-Jan-08 4.5779 4.4654 0.1125 501.7 334.7 10017.6 10,353,840 0.0109 99.4%365
2 7816021 07-Jan-08 14-Jan-OS 4.5412 4.4792 0.0620 670.1 501.7 10104.0 10,586,197 0.0059 100.2%37.0
3 78t6015 14·Jan-08 21-Jan-OS 4.5730 4.4721 0.1009 838.9 670.1 10128.0 10,611,342 0.0095 100.5%37.0
4 7816009 21-Jan-08 28-Jan·08 4.5392 4.4447 0.0945 1010.0 838.9 10267.8 10,757,814 0.0088 101.9%37.0
5 7816003 28·Jan-08 4-Feb-08 4.5387 4.4489 0.0898 1173.3 1010.0 9801.0 10,268,736 0.0087 97.2%37.0
6 7816797 04-Feb-08 [I-Feb·08 4.4454 4.3747 0.0707 1343.6 1173.3 10212.6 10,699,979 0.0066 101.3%37.0
7 7816791 II-feb-08 18-Feb·08 4.4739 4.3995 0.0744 1510.9 1343.6 10040.4 10,491,130 0.0071 99.6~/o 36.9
8 7816785 18-feb-08 25-Feb-08 4.5025 4.4380 0.0645 1681.5 1510.9 10238.4 10,698,019 0.0060 101.6%36.9
9 7816779 2S-Feb-08 3-Mar-08 4.5548 4.4872 0.0676 1849.3 1681.5 10065.0 10,516,835 0.0064 99.9%36.9
10 7816773 03-M~r-08 10-Mar-OS 4.5540 4.4838 0.0702 2012.3 1849.3 9719.4 10,135,337 0.0069 97.0%36.6
11 7816767 1O-Mar-08 [8-Mar·08 4.6752 4.5210 0.1542 2181.9 2012.3 101802 10,493,070 0.0147 88.4%36.4
12 7816761 18-Mar-08 24-Mar-08 4.6233 4.4883 0.1350 2348.8 2181.9 10012,2 10,319,907 0.0131 115.9%36.4
13 7816756 24-Mnr-08 31·M.r-OS 4.7680 4.5108 0.2572 2518.0 2348.8 10150.8 10,462,767 0.0246 100.7%36.4
Totals 91 2184.0 4.5667 4.4625846 0.1041 130997.4 '·:d36,394,973',:,1,,0.0099 100.3%36.8._......
;:"~
BHY-2 on stream%100.0%BHV-2 Total Volume:4.82E-f06
Week Filler Start Stop Stop Start Total Tolal Loadin9.PerCerlt
It l'IU1111,Jt;:Il uatc Vent::'-='IU':>~IctlC I'IC~IBllw IIIIlit:>Ill/le """""v .IIU.............".....'1 ......",...........,.'"
1 7816026 31-Dec-Q7 07-Jan·08 4.6639 4.4561 0.207B 10701.7 10534.7 10020.6 10.356.941 0.0201 99.4%36,5
2 7816020 o7-Jan-08 14-Jan-OB 4.5726 4.4789 0.0937 10870.2 10701.7 10107.6 10,589,968 0.0088 100.3%37.0
3 7816014 14-Jan-08 21-Jan-08 4.6501 4.4735 0.1766 11038.9 10870.2 10123.8 10,606,942 0.0166 100.4%37.0
4 781600B 21-Jan-08 28-Jan-08 4.6110 4.4562 0.1548 11210.2 11038.9 10276.2 10,766,615 0.0144 101.9%37.0
5 7816002 28-Jan-08 04-Feb-08 4.5755 4.4394 0.1361 11373.1 11210.2 9774.6 10,241,077 0.0133 97.0%37.0
6 7816796 04-Feb-08 11-Feb-08 4.4600 4.3757 0.0843 11543.6 11373.1 10234.2 10,722,610 0.0079 101.5%37.0
7 7816790 l1-Feb-06 18-Feb-08 4.5264 4.4424 0.OB40 11711.4 11543.6 10063.2 10,514,954 0.0080 99.8%36.9
8 7816784 18-Feb-08 25-Feb-OB 4.4590 4.4275 0.0315 11881.4 11711.4 10205,4 10,663,537 0.0030 101.2"'{'36.9
9 7816778 25-Feb-OB 03-Mar-08 4.6036 4.4833 0.1203 12049.2 11881.4 10066.2 10.518,088 0.0114 99.9%36.9
10 7816772 03-Mar-08 10·Mar-08 4.5623 4.4796 0.0827 12212.7 12049.2 9810.6 10,167,672 0.0081 97.3%36.6
11 7816766 10-Mar-08 16·Mar-08 4.6685 4.5203 0.1482 12382.1 12212.7 10159.8 10,472,043 0,0142 88.2%36.4
12 7816760 18-Mar-08 24-Mar-08 4.5929 4.4846 0.1083 12548.9 12382.1 10009.8 10.317,433 0.0105 115.9%36.4
13 7816755 24-Mar-08 31-Mar-08 4.7243 4.4913 0.2330 12719.7 12548.9 10247.4 10,562,336 0.0221 101.7%36.4
Totals 91 2184.0 4.590008 4.462215 0.1278 131099.4 X'136,5oo,216.0.0122 100.3%36.8
BHY-4 on stream %99.9%BHV-4 Tolal Yolume:4.81E-f06
Week Filter Start Stop SlOp Start Total Total Loading,PerCent
1t ''JUllIUCI LI.;:nl;l LJ<C:ltll;;:,.::UV;:J~'ColO l'tta IIUlv 11111'"'"IJ\Oo ""~",.,,"lUI."....'-I.,VU....l;Il"........."..,
1 7816025 31-Dec-07 07-Jan-Q8 4.5413 4.4448 0.0965 504.2 337.8 9986.4 10,321,593 0.0093 99.1%36.5
2 7816019 07-Jen-08 14-Jan·08 4.5071 4.4743 0.0328 671.8 504.2 10055.4 10,535,277 0.0031 99.8%37.0
3 7816013 14-Jan-08 21-Jan·08 4.5603 4.4853 0.0750 839.5 671.8 t0060.2 10,540.306 0.0071 99.8%37.0
4 7816007 21-Jan-08 28-Jan-08 4.5246 4.4570 0.0676 1011.8 839.5 10336.8 10.830.107 0.0062 102.5%37.0
5 7816001 28-Jan-08 04-Feb-08 4.3300 4.4259 -0.0959 1177.3 1011.8 9931.2 10,405,150 -0.0092 98.5%37.0
6 7816795 04·Feb-08 11-Feb-08 4.4884 4.4109 0.0775 1344.9 1177.3 10055.4 10,535,277 0.0074 99.8%37.0
7 7816789 l1-Feb-08 18-Feb-08 4.5400 4.4523 0.0877 1511.3 1344.9 99882 10,436,587 0.0084 99.1%36.9
8 7816783 18-Feb-08 25-Feb-08 4.5060 4.4348 0.0712 1679,7 1511.3 10099.8 10,553,197 0.0067 100.2%36.9
9 7816777 25-Feb-08 03-Mar-08 4.5718 4.4889 0.0829 1852.6 1679.7 10377.6 10,843.468 0.0076 103.0%36.9
10 7816771 03-Mar-08 1()"Mar-08 4.5821 4.4945 0.0876 2013.3 1852.6 9642.0 9,992,936 0.0088 95.7%36.6
11 7816765 10-Mar·08 18-Mar-08 4.7294 4.5243 0.2051 2182.7 2013.3 10164.6 10,476.991 0.0196 88.2%36.4
12 7816759 18-Mar-08 24-Mar-Q8 4.6321 4.4744 0.1577 2349.6 2182.7 10011.6 10,319,289 0.0153 115.9%36.4
13 7816754 24-Mar-08 31-Mar-08 4.6269 4.5027 0.1242 2519.3 2349.6 10180.8 10,493,689 •.·0.0118 101.0%36.4
TotalS 91 2184.0 4.549231 4.466931 0.0823 130890 !;',136,283.866 0_0079 100.2%36.8
SHV·5 on stream %99.9%SHY·5 Total Volume:4.81E-f06
Week Filter Start Stop Stop Start Total Total loading,PerCent
"l'IUIlIU<:Ol .....~~.........l;I~<J "'IV.:J..:J 1"1''''I~"'''lUll....,....-,..........,~...J.....,..,.........,......."..............,...
1 7816024 31-Pec-07 07-Jan-08 4.6364 4.4820 0.1544 10620.6 10454.5 9965.4 10,299,888 0.0150 98.9%36.5
2 7816018 07-Jan-OB 14·Jarl-08 4,5555 4.4788 0.0767 10787.9 10620.6 10036.8 10.515,790 0.0073 99.6%37.0
3 7816012 14-Jan-08 21-Jan·08 4.6129 4.4808 0.1321 10956.0 10787.9 10089.0 10,570,481 0.0125 100.1%37.0
4 7816006 21-Jan-Q8 28-Jan-08 4.5522 4.4347 0.1175 11128.2 10056.0 10327.8 10,820,677 0.0109 102.5%37.0
5 7816800 28-Jan-QB 04-Feb-08 4.5362 4.4036 0.1326 11294.5 11128.2 9980.4 10,456,698 0.0127 99.0%37.0
6 7816794 o4-Feb·08 11-Feb-08 4.4703 4.3854 0.0849 11460.9 11294.5 9986.4 10,462,984 0.0081 99.1%37.0
7 7B16788 11-Feb-08 18·Feb-OB 4.5655 4.4733 0.0922 11628.0 11460.9 10025.4 10.475,457 0.0088 99.5%36.9
8 7816782 18-Feb-08 25-Feb·08 4.5692 4.5050 0.0642 11797,1 11628.0 10146.0 10,601.471 0.0061 100.7%36.9
9 7816776 25-Feb-08 03-Mar-08 4.5695 4.4757 0.0038 11969.5 11797.1 10341.6 10,805.852 0.0087 102,6%36.9
10 7816770 03-Mar-Oe 10·Mar-08 4.5981 4.4917 0.1064 12131.0 11969.5 9688.8 10,041,439 0.D106 96.1%36.6
11 7816764 10-Mar-OB 18·Mar-08 4.7362 4.5472 0.lB90 12299.4 12131.0 IOt07.0 10,417,621 0.0181 87.7%36.4
12 7816758 18-Mar-OB 24-Mar-08 4.6436 4.47B3 0.1653 12466.2 12299.4 10008.6 10,316,197 0.0160 115.8%36.4
13 7816753 24-Mar-08 31-Mar-08 4.7612 4.4B36 0.2776 12636.0 12466.2 10188.6 c.l0,501,729 0.0264 101.1%36.4
Totals 91 2184.0 4.600523 4.470777 0.1297 130891.8 -,1;136;286;282(;,0.0124 100.2%36,8 «
(
Period:January1,2008 through March 31,<':008 (1st Quarter 2008)Page 2
BHV-6 on stream %99.9%BHV-S Total Volume:4_81E+06
Week Filler Star!Stop Stop Star!Total Total Loading.PerCent
rr-.'l.UllILJCI Lr~ty LJ~lC"'\;JIUvoU'laJ~J1tH J"IIe'.,llle 11111....I..,HI:iI.;;l 'H\-illl'oJ V~I ..........0111 V .....'lfJ
1 7816023 31-Dec-07 07-Jan-08 4.5743 4.4876 0.0867 10267.8 10101.4 9987.6 10.322.833 0.0084 99.1%36.5
2 7816017 07-Jan-08 14-Jan-08 4.5412 4.4746 0.0666 10435.3 10267.8 10050.0 10.529,620 0.0063 99.7%37.0
3 7816011 14-Jan-08 21-Jan-Q8 4.5837 4.4742 0.1095 10603.0 10435_3 10061.4 10.541,564 0.0104 99.8%37.0
4 7816005 21-Jan-08 28-Jan--08 4.5558 4.4575 0.0983 10775.2 10603.0 10329.0 10.821.934 0.0091 102.5%37.0
5 7816799 28-Jan-08 04-Feb-08 4.4909 4.4112 0.0797 10941.4 lOnS.2 9971.4 10.447.269 0.0076 98.9%37.0
6 7816793 04-Feb-08 H-Feb-08 4.4565 4.3846 0.0719 11107.9 10941.4 9991.2 10.468.013 0.0069 99.1%37.0
7 7816787 11-Feb"(}8 18-Feb-08 4.5165 4.4422 0.0743 11274.9 11107.9 10024.2 10,474.203 0.0071 99.4%36.9
8 7816781 18-Feb-08 25-Feb-Q8 4.5577 4.5079 0.0598 11443.5 11274.9 10113.6 10,567,616 0.0057 100.3%36.9
9 7816775 25-Feb-08 03-Mar-08 4.5477 4.4713 0.0764 11616.3 11443.5 10368.0 10.833,437 0.0071 102.9%36.9
10 7815769 03-Mar-08 10-Mar-08 4.5629 4.4777 0.0852 11778.1 11616.3 9706.2 10.059.473 0.0085 96.3%36.6
11 7816763 10-Mar-08 18-Mar"(}8 4.6902 4.5307 0.1595 11946.3 11778.1 10095.0 10,405,252 0.0153 87.6%36.4
12 7816757 18-Mar-08 24-Mar-08 4.6510 4.5026 0.1484 12113.1 11946.3 10008.0 10,315.578 0.0144 115.8%36.4
13 7816752 24-Mar-08 31-Mar-08 4.7452 4.4858 0.2594 12282.9 12113.1 10186.2 10,499.255 0.0247 101.1%36.4
Totals 91 2184.0 4.575662 4.469838 0.1058 130891.8 ..,136,286,04E>i,'i 0.0101 100.2%36.8
-"~"'"
..\~
ALL SHVon stream %99.9%
Net
Stop
Dale
Start
Date
Week
#Blanks ,""'On,,,~u~....l'tU~
1 7816022 31-Dec-07 07-Jan-08 4.4783
2 7816016 07-Jan-08 14-Jan..(}8 4.4645
3 7816010 14-Jan·08 21-Jan-QB 4.4422
4 7816004 21-Jan-08 28-Jan-08 4.4517
5 7816798 28·Jan-08 04-Feb-08 4.4179
6 7816792 04-Feb.08 11-Feb-08 4.3969
7 7816786 11-Feb-08 1S-Feb-OB 4.4444
8 7816780 18-Feb-OS 25-Feb-08 4.4877
9 7816774 25-Feb-OS 03-Mar-08 4.4897
10 7816768 03-Mar-08 1D-Mar-08 4.5017
11 7816762 10-Mar-08 16-Mar-08 4.5004
12 7816751 18-Mar-Q8 24-Mar-08 4.4842
13 7816750 24-Mar-Q8 31-Mar-08 4.4747
Totals 91 2184.0 4.4642
L...__~~
DENISON "'lINES
ATTN:CHRISTY WOODW>".RD
1050 17TH STREET SUITE 950
DENVER,CO 802b5
Radon Monitoring Report
Acct.No.I 0409981;>I
\
LAI\JDAUER
Landauer.Inc.2 Science Road Glenwood,Illinois 60425-1586
Telephone:[phone] Facsimile:(708)755·7048
DY:.j...•.........•-...
@
11OFPAGE
(D
Avg.RadonConc.pCi/1
59.7
141.7
127.0
118.5
160.7
139.6
Exposurepei/I·daysFieldDalaIComments
(~)(3j@cD
Detector I Detector Staning EndingNumberTypeDateDate
03--..JAN-O/3 02-I'1AY-08
0:J-.JAN--08 02-·{'1AY-(18
()3-~JAN-(l8 02-~'IAY-08
03·--..JAl\I-(l8 02-!'1AY-08
03·-.JAN-08 02-l"IAY-08
03-·jAN-08 02-I'1AY·-08
::;..
Rad©Jfi1 ~Vh)frl~tq)r~ng Report
DENISON t'III\lES
ATTlII ~CHRI STY WOfJDltJARD
10::;;0 17TH STREET ~3UITE 9150
DEhI\.'Ef-\,CO B()r~6:5 'I
ft.cc't NQ.[~~??~~~]
LANDAUEJF
Llllldllu~r.illC.2 Sd"ilCC Road Glenwood,lili
TdcpJlOilC:(ROO)528·8327 l'ilcsimilc;(70
11OF
I0.4 I
0.4
PAGE
*
,*
30.0
30.0 II
II
.x-
*III
'l:'~'.LESS THAN INDICATED VP.LUE
"H\,.i2r'f;;l:jIRTAIL ROAD
*':";L.E~8 THt"!NJ:l\JDJCATED VAL.U\::
.aHlJ·l.r .WF.:ATHERSTAT1.ON
I
I
I I l___..._....__...__-1 -l ._...____
(5.:-(il)'-7.'(8)
"Q.C.Bp,laa(;e ~~-i;~-;;;;ss.N0~.-l Hopod Dai;;;--!D",16 Recl,jved ~
,nRBA~14B7 23'~~JUL-O~17-,JUL-OB
!_.,_~..........J__....._
r4"'\1..:.,
BY:._"...._....,__"'....~...
-----··..---F-.i0-'j(·j ::l~~con:::~~~--'-"----'--""-'I--:;;~~~~...~~~~~';~~:""-'I-"--'-----'-"--"--'-
.',*..""..--:L..Ef3.'S THAN'~iI\iDrcATED V~~LUE lIL-~:-30.(1 ._.•~*0 •4,~1__.
,l3H\,i 4:"SOUTHWEST CORNER
.'~ESS THAN IhlDICATED VALUE l *3(00)*0.4
·6,.SOUTHWEST Hl,JY 191 I I I
'~.~"LES,S TH(.\/N INDICATED VALUE II'.Jl-30"0 I *004
.l3HV,.q"SOUTH MAIN ENTRANCE..:',.,.,..'I
INDICATED VALUE,*300°1 *0.4
@(?)(f,>
DCIGclor I Detector I--:i=]EndingNumoorTypeD~IG DUlt'
DRl\l 02'-Mf.I.'/-08 14--JUl.-08
DRN 02-I'1AY--08 14-JlJL'-Oa
DRi',1 Cl2-1'IAY-O/:J 14-JUL'-08
DRN 02-·MAY-·08 14-·-.JlJI_-08
l.iRN O;~-t"!AY-OH 14-.JUL-·08
lJRN 02-I'1AY-OIi3 14,--.JUL-OB
':-;.'"
White Mesa Mill Ambient Gamma Levels Over Time
~.OOi I
45.00 I ~I
40.00 I II I
35.00 I ,I *I I ..I
30.00 I "'*"'I ":&I I ..."""I I""
~III~25.00 I ,H In"'6 '*J \ ,,,\I "'T'I "I H II "I "'T ...I '..I ...r ...,I I I ~IEQl0::E
20.00 Ii \fIl I J \1,I -"11 a "M I 1:I •I
15.00 I ,I ...I
10.00 I /I •'"II I
5.00 I _IV ....
0.00
30-Sep-81 03-Jan_84 22-4pr_86 15_JUI_88 1-0Ct-90 4-Jan_93 11-4pr_95 8-JUI-97 12-0ct_99
Backgroound (BHV-3)Subtracted from BHV-1, BHV-2,BHV-4,and BHV-5
I_BHV-1 -+-BHV-2 -atr-BHV-3 _BHV-4 _BHV-51
28-Jan_02 1-4pr-04 12-JUI-06
White Mesa Mill Second Qnarte,'2008 Environmental Spherical Gamma Monitor Results
Total Days Mean
Badge Badge at Amhient Dose mRem[
Numbel'Location Date Issued Date Returned WMM Eqnivalcut mReml honr mRemI Day Week
14 BHV-I 4115/2008 7/9/2008 85 30.8 0.02 0.362 2.54
15 BHV-2 4[15/2008 7/9/2008 85 30.6 0.02 0.360 2.52
16 BHV-3 4/1512008 7/9/2008 85 29.7 0.01 0.349 2.45
17 BHV-4 4115/2008 7/9/2008 85 30.3 0.01 0.356 2.50
18 BHV-5 4fl512008 71912008 85 30.6 0.02 0.360 2.52
2 BHV-6 4115/2008 7/9/2008 85 26.4 0.01 0.311 2.17
White Mesa Mill First Quarter 2008 Environmental Spherical Gamma Monitor Results
Mean
Total Days Ambient
Badge Badge at Dose mReml
Number Location Date Issued Date Returned WMJ'\1 Equivalent mRem 1 hour mRem /Day Week
14 BHV-I 111512008 4/15/2008 91 37.4 0.02 0.411 2.88
15 BHV-2 1115/2008 4/15/2008 91 34.7 0.02 0.381 2.67
16 BHV-3 1/15/2008 4/15/2008 91 34.7 0.02 0.38]2.67
17 BHV-4 111512008 4/15/2008 91 34.5 0.02 0.379 2.65
18 BHV-5 1115/2008 4/15/2008 91 34.2 0.02 0.376 2.63
2 BHV-6 1/1512008 411512008 91 31.2 0.01 0.343 2.40
Ra-226 Concentrations In Vegetation (uCilKg)
1.0E-02
1.0E-03
1.0E-04
-Q)
ftju(/)1.0E-05
C)od.
1.0E-06
1.0E-07
1.0E-08
~~~~~~~~~~~~~~~~~~~~~~~~~~~",-corv ~co ~co ~9:3 -,.,.:QS (fcc (fco ~QS ~C8 ~Oj ~Oj ~Oj )?S &~~C8 ~Oj ~OJ ~Cf>~(j ~r:::,_\})&})~r:::J ~":5 &5S ~r:::,~r:::J~~~~&0 0~~~~~_~~~~_~~~~_~_~~~~_~~~~~~~n~~~~~~~~~.~~-~~~A~~~~~~-n~r:::,r:::,,,-'"":5 ~"U t),V r:::,~'"t),~~"~I).;t),t),'-''"t),':>r:::,\t),r:::J t),r:::,~"t),v
I-+-NE -e-NW -.-SW I
Pb-210 Concentrations In Vegetation (uCi/Kg)
1.00E-02
1.00E-03 ..L 'J ~n AaH f \"til ,"'.\/I "I\:...I
1.00E-04
Q)
iiuen 1.00E-05 I •I I I'11'II \I ~,I I
Clo..J-
1.00E-06
1.00E-07 I •I
1.00E-08
~~~~~*~*~~~~~~~*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I-+-NE _NW --.-SW I
ENERGYLABORATORIES,lNC••2393 SaltCreek Highway (82601)'p.o,Box:]258 •Casper,WY82802
ToIIFree888.23!i0515 •807('0515'Fax [phone]'casper@energylab.q·WWl-v.energylab.com
LASORATORY ANALYTICAL REPORT
Client
Project:
Lab ID:
Client Sample 10:
Denison Mines (USA)Corp
Early Spring Vegetation
C08041165--002
Northeast
ReportDate:06/08/08
Collection Date:04f22/0814:05
DateReceived:04f25/08
Matrix:Vegetation
MCU
Analyses Result Units Qualifiers Rl QCL Method Analysis Date/By
RADIONUCLIDES -TOTAL
Lead 210 2.3E-04 uCilkg i.0E-06 E909.0M 05119/08 07:15/dm
Lead 210 precision (±)1.4E-05 uCilkg E909.0M 05/19/08 07:15/dm
Radium 226 1.2E·04 uCilkg E903.0 05116/08 11:451 trs
Radium 226precision (±)3.6E-06 uCilkg E903.0 05116/08 11:45/trs
Radium 226MOC 5.2E-07 uCllkg E903.0 05/16/0811:45/trs
':.-
Report RL -Analyte reporting limit.
Definitions:QCL -Quality control limit.
MDC -Minimum detectable concentration
Mel-Maximum contaminant level.
ND.Notdetected at the reporting limit.
ENERGYl.ABORATORIES.INC••2393 Sal!CreekHighway (82801)•Po.Box $2']8 •Casper,WY82602
TollFree 888.235.0515 •307/0515 •Fax 307.2:J4.1639 •casper@energylab.c(www.energylab.com
LASORATORY ANALYTICAL REPORT
Client:
Project:
LablD:
ClientSample 10:
Denison Mines (USA)Corp
EarlySpring Vegetation
COB041165·003
Norhtwest
Report Date:06/08/08
Collection Date:04/22/0812:52
DateReceived:04/25/08
Matrix:Vegetation
MCU
Analyses Result Units Qualifiers RL QCL Method Analysis Date I By-RADJONUCLIDES -TOTAL
Lead 210 4.4E·04 uCilkg 1.0E-05 E909.OM 05119/08 07:151 dm
Lead 210 precision (±)2.0E·05 uCiJkg E909.0M 05119/0807:151 dm
Radium 226 4.91:-05 uClIkg E903.0 05116/08 11:45Jtrs
Radium 226 precision (±)2.8E-06 uCI/kg E903.0 05116108 11:45Jtrs
Radium 226 MDe 7.2E·07 uCifkg E903.0 05116/08 11 :451 trs
I>
rI:'
Report Rl-Analyte reporting limit.
Definitions:QCL -Quality conlrollimit.
MDC -Minimum detectable concentration
MGl -Maximum contamlnanlleveL
NO -Not detected atthe reporting limit.
ENEFlGYLABOFlATOFlIES./NC••2393Salt CreekHighway(82/JOlj •p.D.Box:jP58 •Casper;WY82602
ToIIFree888.235.0515·30Tt -'0515'Fax[phone]S9·casper@energylab.t(www.energylab.com
LASORATORY ANALYTICAL REPORT
Client:
Project
Lab 10:
ClientSample 10:
Denison Mines (USA)Corp
Early Spring Vegetation
C08041165-001
Southwest
Report Date:06/08/08
Collection Date:04122108 10:35
DafeReceived:04/25/08
Matrix.:Vegetation
MeLJ
Analyses Result Units Qualifiers RL QCL Method Analysis Date I By
RAOIONUCLIDES •TOTAL
Lead 210 2.3E·04 uCilkg 1.0E·06 E909.0M 05119/0807:151dm
Lead 210 precision (±)1.5E·05 uCi/kg E9OS.OM 05119/0807:151 dm
Radium 226 3.2E·05 uCilkg E903.0 05116/0811:45/trs
Radium 226 precision (±)2.3E·06 uCilkg E903.0 0511610811:451 Irs
Radium 226 MDC 7.2E·07 uCilkg E903.0 05116/08 11:45 I trs
~.>
':."
:":l:'
I
!.:
i,.
f;..f-:-
;->.
Report RL •Analyte reporting limit.
Definitions:QCl.Quality controllimil.
MDe •Minimum detectable concentration
MCL -Maximum contaminant level.
ND -Notdetected at the reporting limit.
IiU-&'ti
d'llil1&'iiU"f
ENERGYLABORATORIES,INC••2393 SaIl CreekHighway (82601)•RD.Box 3258 •Casper,WY82602
Tol/Free888.235.0515 •307.235.0515 •Fax [phone]'[e-mail]·www.energylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
LablD:
Client Sample 10
Denison Mines (USA)Corp
Late Spring Vegetation
C08061062-002
Northeast
Report Date:08/13/08
Collection Date:06/18/0808:41
DateReceived:06/23/08
Matrix:Vegetation
Analyses Result Units
RADIONUCLlDES·TOTAL
Lead 210 6.9E-05 uCilkg
Lead 210 precision (±)3.5E-05 uCilkg
Lead 210 MDC 5.5E-05 uCiJkg
Radium 226 3.2E-05 uCilkg
Radium 226 precision (t)3.3E-06 uCilkg
Radium 226 MDC 1.8E-OS uCilkg
Qualifiers RL
Mew
QCL Method
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
Analysis Date/By
07/16/0B 09:30 /dm
07/16/0809:30/dm
07/16/0B 09:30 I dm
07/16/0813:32/dmf
07/16/08 13:32/dmf
07/16/0813:32/dmf
!1-.·F:
Report
Definitions:
RL •Analyte reporting limit.
QCl-Quality conlrollimit.
MOC -Minimum delectable concentration
MCl -Maximum contaminant level.
ND-Not detected at the reporting limit.
;ENERGYLABORATORIES,INC.•2393 SaltCreek Highway (82601)•Po.Box 3258 •Casper,WY82602':tgg"{';:l'~TollFree 888.2J5.0515 •307.235.0515 •Fax [phone] •[e-mail]·www.energy/ab.com
'Itt@l&tii1iI14t
LASORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample 10
-~._~---_.
Denison Mines (USA)Corp
Late Spring Vegetation
C08061062-003
Northwest
Report Oate:OB/13/08
Collection Oate:06/18/0808:20
OateReceived:06/23/08
Matrix:Vegetation
Analyses Result Units Qualifiers RL
MCLI
QCL Method Analysis Date /By ;~~i
RADIONUCLlOES·TOTAL
Lead 210
lead 210 precision (:1:)
Lead 210 MDC
Radium 226
Radium226 precision (:1:)
Radium 226 MOC
1.3E-04 uCi/kg
4.1 E-05 uCi/kg
6.3E-05 uCilkg
2.1 E-Q5 uCi/kg
3.2E-06 uCilkg
2.2E-06 uCi/kg
E909.0M
E909.0M
E909.0M
E903.0
E903.0
E903.0
07/16/0809:30 /dm
07/16/0809:30/dm
07/1610809:30/dm
07/16/0815:34 /dmf
07/16/0815:34/dmf
07116/08 15:34 /dmf
.:;.~
",.
-----'--'-~~~~~~-
Report RL •Analyte reporting limit.
Definitions:QCl•Quality control limil.
MOe·Minimum detectable concentration
MCl •Maximum contaminant level.
NO -Not detected atthe reporting limit.
---~-..._--
-ENERGYLABORATORIES,INC.-2393 SaltCreek HigtJway(82601)-P.D.8ox3258 -Casper.WY82602lU_TbI/Free888.235.0515·307.235.0515 -Fax [phone] •[e-mail]·www.energy/ab.com
LASORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample 10
Denison Mines (USA)Corp
Late Spring Vegetation
C08061 062-001
Southwest
Report Date:08/13/08
Collection Date:06/18/0809:14
DateReceived:06/23/08
Matrix:Vegetation
MCLJ
Analyses Result Units Qualifiers RL aCL Method Analysis Date I By
RADIONUCLlDES·TOTAL
Lead 210 5.0E-05 uCilkg E909.0M 07/1610809:30 I dm
lead 210 precision (±)3.0E-05 uCllkg E909.0M 0711610809:30/dm
lead 210 MOC 4.8E-05 uCllkg E909.0M 0711610809:30 I dm
Radium 226 1.2E-05 uCilkg E903.0 07/16108 13:32 I dmf
Radium 226 precision (±)2.2E-06 uCilkg E903.0 07116/08 13:321 dmf
Radium 226 MOe 1.8E-06 uCllkg E903.0 07/16/0813:321 dmf
r-·
r:~.
Report Rl•Analyte reporting limit.
Definitions:aCl-Quality controllimil.
MOe -Minimumdetectable concentration
MCl •Maximum contaminant level.
NO -Not detected at the reporting limit.
WI-IITE MESA MILL
FORAGE RADIONUCLIDE DATA
NORTH EAST OF MILL
Ra-226 Ra-226 LLD Pb-2l0 Pb-210 LLD
SAMPLED VALUE ERROR uCifKg VALUE ERROR uCi/Kg
DATE uCifKg uCi/Kg 5.0E-08 uCi/Kg uCifKg 1.0E-06
27-Aug-81 3.90E-04 1.0E-05 5.0E-08 1.10E-03 1.0E-04 1.0E-06
20-0ct-81 1.40E-04 1.0E-05 5.0E-08 6.80E-04 8.0E-05 1.0E-06
15-Apr-82 1.31£-04 ].3E-05 1.0E-06 4.90E-04 7.0E-05 8.0E-05
01-Jul-82 1.60E-04 1.0E-05 5.0E-08 8.00E-04 1.7E-04 1.0E-07
30-Nov-82 2.67E-06 1.1E-06 1.0E-06 1.08E-04 9.0E-06 1.0E-05
13-Apr-83 9.36E-05 6.2E-06 8.0E-09 4.97E-04 9.3E-05 1.0E-04
01-Jul-83 1.12E-04 1.2E-05 6.0E-06 1.84E-04 1.2E-05 1.0E-06
30-Jan-84 1.09E-04 8.0E-06 4.0E-06 7.80E-04 6.2E-05 6.0E-05
28-Jun-84 3.47E-04 1.2E-05 2.0E-09 3.75E-03 1.6E-04 4.0E-08
14-Nov-84 5.61E-04 2.0E-04 2.0E-07 7.82E-03 3.3E-04 7.0E-08
27-Mar-85 1.05E-03 3.0E-05 2.0E-06 3.22E-03 1.4E-04 2.0E-05
15-Jul-85 8.20E-05 7.0E-06 3.0E-06 7.70E-04 1.3E-04 2.0E-04
09-0ct-85 1.15E-04 1.0E-05 3.0E-06 5.10E-04 3.0E-05 2.0E-05
24-Mar-86 5.72E-04 2.IE-OS 4.0E-06 2.49E-03 ].OE-04 1.0E-05
1O-Jul-86 5.01E-04 1.3E-05 3.0E-06 1.57E-03 1.7E-03 2.0E-04
18-Dec-86 8.70E-04 5.0E-05 3.0E-06 6.80E-04 3.0E-05 3.0E-06
20-Apr-87 5.90E-04 7.0E-05 5.0E-08 1.50E-03 1.0E-04 1.0E-06
05-Jun-87 1.60E-04 3.0E-05 5.0E-08 9.50E-04 4.0E-05 1.0E-06
22-Dec-87 2.10E-04 4.0E-05 5.0E-08 1.70E-03 1.0E-04 1.0E-06
19-Apr-88 4.50E-04 7.0E-05 5.0E-08 1.40E-03 1.0E-04 1.0E-06..~._.-
28-Jul-88 3.20E-05 2.2E-05 5.0E-08 1.50E-04 4.4E-04 1.0E-06_.__.._--...--,'.,----
07-Apr-89 5.60E-04 4.0E-05 ***1.10E-03 1.0E-01 ***
06-Jun-89 1.50E-04 2.0E-05 ***2.30E-04 2.0E-05 ***
07-Nov-89 6.00E-04 5.0E-05 7.0E-06 2.04E-03 7.0E-05 1.4E-05
17-Apr-90 2.60E-04 3.0E-05 4.0E-06 3.30E-04 2.0E-05 2.2E-05
20-lun-90 1.80E-04 2.0E-05 5.0E-08 3.20E-04 2.0E-05 1.0E-06
17-0ct-90 1.60E-04 2.0E-05 5.0E-08 3.30E-04 2.0E-05 1.0E-06
1O-Apr-91 1.20E-04 2.0E-05 5.0E-06 3.00E-04 2.0E-05 1.0E-06
11-Jun-91 9.lOE-05 1.6E-05 2.0E-07 1.90E-04 2.0E-05 2.0E-07
20-Nov-91 4.50E-04 4.0E-05 5.0E-08 1.09E-03 5.0E-05 1.0E-06
22-Apr-92 3.60E-05 1.0E-05 2.0E-06 1.50E-04 2.0E-05 1.0E-05
10-Jun-92 1.00E-05 7.0E-06 2.0E-07 7.50E-05 2.0E-05 1.0E-06
10-Jun-92 7.90E-05 3.5E-05 3.0E-06 7.lOE-04 7.0E-05 2.0E-05
i·,:
WHITEMESA MILL
FORAGE RADIONUCLIDE DATA
NORTH EAST OF MILL
Ra-226 Ra-226 LLD Pb-210 Pb-21O LLD
SAMPLED VALUE ERROR uCilKg VALUE ERROR uCilKg
DATE uCilKg uCilKg 5.0E-08 uCilKg uCilKg 1.0E-06
--
13-Apr-93 3.70E-05 2.2E-05 3.0E-06 2.80E-04 3.0E-05 2.0E-05
26-Jun-93 3.00E-05 1.5E-05 3.0E-06 4.30E-05 3.5E-05 2.0E-05
12-0ct-93 6.60E-05 2.7E-05 3.0E-06 5.30E-04 6.0E-05 2.0E-05
ll-May-94 1.80E-04 4.0E-05 3.0E-05 4.40E-04 6.0E-05 2.0E-04
19-Jul-94 1.71E-05 1.2E-06 9.0E-08 3.00E-05 6.1E-06 4.5E-06
28-Nov-94 2.40E-04 1.5E-05 1.7E-07 1.70E-04 1.1E-05 8.3E-07
l1-Apr-95 6.70E-05 5.4E-06 1.6E-07 1.40E-04 1.3£.-05 7.9E-07
06-Jul-95 1.50E-05 1.5E-06 1.5E-07 5.1OE-05 4.5E-06 7.6E-07
15-Nov-95 5.50E-05 5.0E-06 1.8E-07 6.70E-05 1.0E-05 8.8E-07
23-Apr-96 5.20E-05 2.5E-06 1.5E-07 3.20E-05 4.5E-06 1.8E-07
31-Jul-96 ***** *
14-Nov-96 3.00E-05 2.5E-06 1.8E-07 1.40E-04 7.1E-06 9.3E-071---
21-Apr-97 1.1OE-05 4.7E-07 1.2E-07 4.IOE-05 3.6E-06 6.1E-07
05-Sep-97 1.10E-05 4.3E-07 1.3E-07 2.10E-05 7.3E-07 6.7E-07
20-Nov-97 8.00E-06 1.2E-06 5.6E-07 1.40E-04 4.6E-06 1.1E-07
23-Mar-98 <9.10E-05 9.1E-05 9.1E-05 <4.50E-04 4.5E-04 4.5E-04
16-Jun-98 1.80E-05 1.2E-06 6.3E-08 4.00E-05 1.8E-06 3.2E-07
05-Nov-98 5.70E-05 1.0E-06 8.2E-08 8.70E-05 5.0E-06 4.1E-07
15-Apr-99 2.00E-04 3.0E-06 1.2E-07 3.00E-04 1.0E-05 6.0E-05
07-Jul-99 6.03E-05 1.4E-06 8.3E-08 1.40E-04 4.7E-06 4.2E-07
02-Dec-99 2.30E-05 1.0E-06 2.3E-07 2.10E-05 1.0E-06 1.1E-06
21-Apr-00 1.50E-04 3.0E-06 1.2E-07 1.60E-04 8.0E-06 5.9E-07
22-Jun-00 1.20E-06 1.0E-07 2.8E-07 1.60E-04 1.0E-05 1.4E-06
21-Dec-00 1.60E-06 1.1E-06 3.7E-07 5.10E-05 5.0E-06 1.9E-06
30-Apr-01 1.00E-06 1.0E-07 2.4E-07 <1.2E-06 1.0E-07 2.4E-07
14-Jun-Ol 2.30E-06 2.0E-07 9.9E-08 3.80E-06 2.0E-07 5.0E-07
17-Dec-01 9.10E-06 2.4E-06 1.2E-07 3.57E-05 3.0E-06 6.0E-07
07-May-02 3.30E-05 1.8E-06 7.6E-07 4.50E-05 2.6E-06 1.0E-05
07-Jul-02 5.55E-05 2.8E-06 7.6E-07 5.31E-05 3.9E-06 1.0E-05
15-Dec-02 7.75E-05 3.6E-06 7.6E-07 1.29E-04 6.2E-06 1.0E-05·
2l-Mar-03 9.10E-06 1.3E-06 3.6E-07 1.13E-05 1.6E-06 3.4E-06
10-Jun-03 2.50E-05 1.3E-06 3.6E-07 3.26E-06 2.0E-06 7.4E-08
20-Nov-03 5.70E-05 3.5E-06 1.5E-07 4.05E-05 5.8E-06 8.3E-07
j.
WHITE MESAMILL
FORAGE RADIONUCLIDE DATA
NORTH EAST OF MILL
Ra-226 Ra-226 LLD Pb-2IO Pb-21O LLD
SAMPLED VALUE ERROR uCi/Kg VALUE ERROR uCi/Kg
DATE uCilKg uCilKg 5.0E-08 uCi/Kg uCilKg 1.0E-06
08-Apr-04 9.38E-05 3.7E-06 l.lE-07 5.88E-05 3.0E-06 5.5E-07
12-Jun-04 5.63E-05 3.4E-06 1.8E-07 6.42E-05 5.9E-06 9.0E-07
30-Nov-04 8.4lE-05 5.50E-06 2.00E-08 2.48E-04 1.40E-05 3.00E-07
21-Apr-05 5.60E-05 3.00E-06 1.40E-07 5.80E-05 4.00E-06 6.90E-07
13-Jun-05 9.10E-06 1.50E-06 1.80E-07 1.10E-05 1.20E-05 9.00E-07
1O-Nov-05 6.00E-05 3.00E-06 1.10E-1O 1.70E-06 6040E-07 5.50E-I0
03-Apr-06 8.00E-05 5.00E-06 5.00E-08 3.40E-04 1.20E-05 1.00E-06
16-Jun-06 4.10E-05 3.10E-06 5.00E-08 1.16E-04 6.10E-06 1.00E-06
28-Nov-06 1.17E-04 4.60E-06 1.90E-07 3.28E-04 9.50E-06 9.50E-07
30-Mar-07 9.70E-05 4.40E-06 1.90E-07 3.40E-04 8.70E-06 8.4-07
1-Jun-07 1.30E-05 1.60E-06 1.90E-07 1.20E-04 6.60E-06 9.70E-07
23-Nov-07 7.00E-05 8.20E-06 2.00E-07 5.00E-04 2.00E-05 1.20E-06
22-Apr-08 3.6E-06 3.00E-06 5.20E-07 2.3E-04 1.40E-05 1.00E-06
18-Jun-08 3.2E-05 3.20E-06 1.80E-06 6.9E-05 3.50E-05 5.50E-05
Ii
!1:.-:
~..
INTERNATIONAL URANIUM CORP.
WHITE MESA MILL
FORAGE RADIONUCLIDE DATA
NORTH WEST OF MILL
Ra-226 Ra-226 LLD Pb-2IO Pb-2l0 LLD
SAMPLED VALUE ERROR uCilKg VALUE ERROR uCilKg
DATE uCilKg uCilKg 5.0E-08 uCilKg uCilKg 1.0E-06
27-Aug-81 2.73E-03 5.0E-05 5.0E-08 7.10E-03 3.OE-04 1.0E-06
20-0ct-81 2.00E-04 1.0E-05 5.0E-08 8.30E-04 5.0E-05 1.0E-06
15-Apr-82 1.04E-04 9.0E-06 7.0E-06 6.40E-04 5.0E-05 4.0E-05
01-Jul-82 2.00E-05 1.0E-05 5.0E-08 2.20E-04 9.0E-05 1.0E-07
30-Nov-82 2.36E-06 9.5E-07 1.0E-06 8.00E-05 1.0E-05 1.0E-05
13-Apr-83 8.58E-05 1.4E-05 2.0E-08 3.53E-04 1.9E-05 1.0E-05
01-Jul-83 1.19E-04 l.lE-05 5.0E-06 1.58E-04 I.3E-05 1.0E-05
30-Jan-84 9.78E-05 7.0E-06 2.0E-06 2.16E-03 3.4E-04 3.OE-04
28-Jun-84 2.08E-04 1.0E-05 3.OE-09 1.60E-03 7.0E-05 3.OE-08
14-Nov-84 6.05E-04 1.6E-04 2.0E-07 2.58E-03 1.1E-04 3.0E-08
27-Mar-85 1.10E-04 8.0E-06 3.0E-06 8.63E-04 4.2E-05 3.0E-05
15-Jul-85 6.JOE-OS 6.0E-06 2.0E-06 5.40E-04 5.0E-05 5.0E-05
09-0ct-85 1.07E-04 6.0E-06 2.0E-06 3.80E-04 3.0E-05 2.0E-05
24-Mar-86 8.86E-04 1.8E-05 2.0E-06 4.40E-03 1.9E-04 3.OE-05
1O-Jul-86 6.66E-04 1.8E-05 3.0E-06 4.78E-03 2.1E-04 6.0E-05
18-Dec-86 5.20E-04 1.0E-04 3.OE-06 1.70E-03 1.0E-04 6.0E-05
20-Apr-87 4.1OE-04 1.0E-04 5.0E-08 1.60E-03 1.0E-04 1.0E-06
05-lun-87 1.60E-04 3.0E-05 5.0E-08 5.50E-04 4.0E-05 1.0E-06
22-Dec-87 3.60E-04 5.0E-05 5.0E-08 1.80E-03 1.0E-04 1.0E-06
19-Apr-88 2.60E-04 5.0E-05 5.0E-08 1.90E-03 1.0E-04 1.0E-06
28-lul-88 3.10E-05 1.9E-05 5.0E-08 1.60E-04 4.0E-05 1.0E-06
07-Apr-89 6.20E-04 5.0E-05 ***1.70E-03 1.0E-04 ***
06-Jun-89 3.40E-04 3.0E-05 ***7.40E-04 3.0E-05 ***
07-Nov-89 5.10E-04 6.0E-05 7.0E-06 1.00E-03 7.0E-05 lAE-05
17-Apr-90 3.60E-04 3.0E-05 4.0E-06 4.80E-04 2.0E-05 2.2E-05
20-lun-90 1.70E-04 2.0E-05 5.0E-08 3.20E-04 2.0E-05 1.0E-06
17-0ct-90 8.80E-05 1.6E-05 5.0E-08 2.90E-04 2.0E-05 1.0E-06
1O-Apr-91 3.00E-04 3.0E-05 5.0E-06 4.lOE-04 2.0E-05 1.0E-06
ll-Jun-91 3.10E-04 3.0E-05 2.0E-07 4.70E-04 2.0E-05 2.0E-07
20-Nov-91 5.00E-04 4.0E-05 5.0E-08 1.50E-03 1.0E-04 1.0E-06
~_~2.:Ap.!:2~___2.00E-05 8.0E-06 2.0E-06 9.60E-05 1.4E-05 1.0E-05
:.;
[:.-
INTERNATIONAL URANIUM CORP.
WHITE MESA MILL
FORAGE RADIONUCLIDE DATA
NORTH WEST OF MILL
--
lO-Jun-92 6.50E-06 6.0E-06 2.0E-06 l.20E-04 2.0E-05 l.OE-06
1O-Jun-92 1.20E-04 4.0E-05 3.0E-06 1.21E-03 8.0E-05 2.0E-05
13-Apr-93 1.80E-05 1.7E-05 3.0E-06 2.l0E-04 3.0E-05 2.0E-05
26-Jun-93 5.20E-05 1.9E-05 3.0E-06 1.70E-05 3.6E-05 2.0E-05
12-0ct-93 5.lOE-05 2.3E-05 3.0E-06 7.l0E-04 6.0E-05 2.0E-05
ll-May-94 l.20E-04 1.0E-05 3.0E-05 9.80E-04 l.6E-04 2.0E-04
19-Jul-94 3.73E-05 1.6E-06 8.4E-08 7.80E-05 7.1E-06 4.2E-07
28-Nov-94 2AOE-04 1.5E-05 1.7E-07 2.60E-D4 l.3E-05 8.3E-07
II-Apr-95 8AOE-05 6.IE-06 I.5E-07 1.20E-04 l.lE-05 7.5E-OS
06-Jul-95 l.90E-05 l.5E-06 l.4E-07 4.50E-05 4.3E-D6 7.2E-07
15-Nov-95 l.20E-04 6.8E-06 l.4E-07 I.OOE-05 5.8E-06 7.IE-07
23-Apr-96 8.30E-05 3.3E-06 1.9E-07 6.80E-05 6.3E-06 l.8E-07
31-Jul-96 ***** *
14-Nov-96 3.60E-05 2.5E-06 l.6E-07 8.50E-05 5.6E-06 8.4E-07
21-Apr-97 3.30E-05 2.3E-06 1.7E-07 4.40E-OS 4.8E-06 8.4E-07
OS-Sep-97 5.40E-06 3.5E-07 l.6E-07 3.20E-05 9.0E-07 7.8E-07
20-Nov-97 8.90E-06 7.2E-07 5.4E-07 3.40E-04 6.7E-06 l.lE-07
23-Mar-98 <9.20E-05 9.2E-05 9.2E-05 <4.60E-04 4.6E-04 4.6E-04
16-Jun-98 <6.50E-08 6.5E-08 6.5E-08 <3.20E-07 3.2E-07 3.2E-07
05-Nov-98 4.20E-OS I.OE-06 l.lE-07 1.70E-04 l.OE-05 5.5E-07
15-Apr-99 6.20E-OS 1.0E-06 I.OE-07 1.40E-04 7.0E-06 l.OE-07
07-Jul-99 5A5E-05 l.4E-06 8.3E-08 9.20E-05 4.0E-06 4.2E-07
02-Dec-99 l.lOE-04 3.0E-06 2.2E-07 2.80E-05 1.0E-06 l.lE-06
21-Apr-OO 3.70E-05 l.OE-06 2.4E-07 2.70E-04 1.0E-05 l.2E-06
22-Jun-OO 2.90E-05 1.0E-06 3.3E-07 2.80E-04 2.0E-05 1.7E-06
21-Dec-OO 2.30E-06 I.4E-06 3.7E-07 3.30E-04 5.0E-05 1.9E-06
30-Apr-OI 2.l0E-05 I.OE-06 I.5E-07 <7.6E-07 N/A 7.6E-07
14-Jun-OI 1.30E-06 4.0E-08 l.2E-07 l.80E-06 3.0E-08 S.9E-07
17-Dec-OI 3.70E-05 7.67E-07 8.30E-08 6.72E-05 2.62E-06 6.00E-07
7-May-02 4.90E-05 2.40E-06 7.60E-07 1.28E-04 5.6IE-06 I.OOE-OS
7-Jul-02 8.88E-05 4.32E-06 7.60E-07 8.33E-OS 4.32E-06 I.OOE-OS
15-Dec-02 1.50E-04 6.2E-06 7.60E-07 3.l6E-04 1.07E-OS I.OE-OS
21-Mar-03 S.OOE-OS 3.4E-06 2.7lE-06 <4.2e-6 4.20E-06
IO-Jun-03 5.60E-05 2.0E-06 4.10E-07 1.88E-04 5.l4E-06 8.2E-08._--_._-_._---
20-Nov-03 3.20E-04 8.2E-06 1.70E-07 4.89E-04 l.2SE-05 8.3E-07
8-Apr-04 6.29E-05 4.1E-06 2.00E-07 1.94E-05 4.00E-06 1.0E-06
,;,.-.
INTERNATIONAL URANIUM CORP.
WHITE MESA MILL
FORAGE RADIONUCLIDE DATA
NORTH WEST OF MILL
--
12-Jun-04 6.51E-05 3AE-06 1.30E-07 1.87E-05 3.90E-06 6.5E-07
30-Nov-04 7.50E-05 4.6E-06 2.0E-08 4A5E-04 1.40E-05 3.0E-07
21-Apr-05 4.90E-05 2.70E-06 1.30E-07 1.27E-04 4.80E-06 6.50E-07
13-Jun-05 2.30E-05 2.10E-06 1.50E-07 4.70E-05 5.10E-06 7.60E-07
1O-Nov-05 7.40E-05 3.50E-06 1.20E-1O 2.40E-06 8.10E-08 5.80E-I0
5-Apr-06 1.00E-04 6.00E-06 5.00E-08 6.54E-04 1.50E-05 1.00E-06
16-Jun-06 9.50E-05 5.90E-06 5.00E-08 4A8E-04 1AOE-05 1.00E-06
28-Nov-06 8.BE-OS 4.10E-06 2.20E-07 3.25E-04 1.12E-06 1.00E-05
30-Mar-07 4.30E-05 2.60E-06 1.70E-07 2.64E-04 7.20E-06 8.60E-07
I-Jun-07 5.1OE-05 3.20E-06 2.30E-07 5.30E-04 1.40E-06 1.20E-06
I 20-NOv-07 /I 7.30E-0511 6.6E-0611 5.0E-08/1 7.00E-0411 2.20E-0511 1.10E-061
I 22-Apr-08 II 2.8E-0611 2.8E-0611 7.20E-0711 4AOE-0411 2.0E-05/1 l.oE-061
~,:-,
('
WHITE MESA MILL
FORAGE RADIONUCLIDE DATA
SOUTH WEST OF MILL
Ra-226 Ra-226 LLD Pb-ZIO Ph-210 LLD
SAMPLED VALUE ERROR uCilKg VALUE ERROR uCilKg
DATE uCilKg uCilKg 5.0E-08 uCilKg uCilKg 1.0E-06
27-Aug-81 9.50E-04 2.0E-05 5.0E-08 1.50E-04 1.0E-05 1.0E-06
21-0ct-81 3.00E-05 3.0E-06 5.0E-08 1.50E-04 2.0E-05 1.0E-06
15-Apr-82 1.37E-05 3.0E-06 3.0E-06 3.80E-04 4.0E-05 4.0E-05
01-Jul-82 3.40E-04 2.0E-05 5.0E-08 3.68E-03 2.7E-04 1.0E-07
30-Nov-82 1.75E-05 3.0E-06 2.0E-06 7.92E-04 4.0E-06 2.0E-05
14-Apr-83 7.13E-04 7.3E-05 9.0E-08 205lE-03 3.0E-04 3.0E-04
01-Jul-83 5.39E-05 4.5E-06 2.0E-06 6.88E-04 4.3E-05 4.0E-05
30-Jan-84 6.40E-05 7.0E-06 4.0E-06 1.20E-03 1.0E-04 4.0E-05
28-Jun-84 8.27E-05 6.3E-06 3.0E-09 1.80E-03 1.0E-04 9.0E-08
14-Nov-84 2.72E-04 1.5E-04 2.0E-07 4.70E-03 7.2E-04 3.0E-07
27-Mar-85 4.73E-04 1.6E-07 3.0E-06 7.07E-04 3.6E-05 3.0E-05
15-Jul-85 6.60E-05 7.0E-06 4.0E-06 4.90E-04 3.0E-05 3.0E-05
09-0ct-85 2.83E-04 2.0E-05 7.0E-06 1.50E-03 1.0E-04 7.0E-05
24-Mar-86 1.57E-04 1.0E-05 4.0E-06 4.14E-03 1.8E-04 3.0E-05
10-Jul-86 3.78E-04 1.0E-05 2.0E-06 1.65E-02 7.0E-04 1.0E-04
18-Dec-86 2.60E-04 2.0E-05 2.0E-06 1.70E-03 1.0E-04 1.0E-04
20-Apr-87 4.10E-04 7.0E-05 5.0E-08 2.20E-03 1.0E-04 1.0E-06
05-Jun-87 2.90E-04 4.0E-05 5.0E-08 7.50E-04 5.0E-05 1.0E-06
22-Dec-87 1.80E-04 3.0E-05 5.0E-08 2.40E-03 1.0E-04 1.0E-06
19-Apr-88 2.30E-04 5.0E-05 5.0E-08 2.90E-03 1.0E-04 1.0E-06
28-Jul-88 1.50E-04 3.0E-05 5.0E-08 4.30E-03 2.0E-04 1.0E-06
07-Apr-89 3.lOE-04 4.0E-05 ***4.20E-03 1.0E-04 ***
06-Jun-89 1.30E-04 2.0E-05 ***1.50E-03 1.0E-04 ***
07-Nov-89 4.30E-04 5.0E-05 1.4E-05 3.50E-03 1.4E-04 2.7E-05
28-Mar-90 2.50E-04 3.0E-05 5.0E-06 2.39E-03 5.0E-05 2.5E-05
13-Jun-90 1.10E-04 2.0E-05 5.0E-08 6.60E-04 3.0E-05 1.0E-06
23-0ct-90 6.1OE-05 1.4E-05 5.0E-08 6.10E-04 3.0E-05 1.0E-06
1O-Apr-91 3.40E-05 1.1E-05 5.0E-06 2.20E-04 1.0E-05 1.0E-06
ll-Jun-91 8.00E-05 6.0E-06 2.0E-07 1.20E-04 1.0E-05 2.0E-07
20-Nov-91 6.50E-05 1.4E-05 5.0E-08 9.lOE-04 5.0E-05 1.0E-06
22-Apr-92 1.60E-05 7.0E-06 2.0E-06 3.20E-04 2.0E-05 1.0E-05
10-Jun-92 1.90E-05 1.0E-05 2.0E-07 2.20E-04 2.0E-05 1.0E-06
(-.
;.,.
08-Dec-92 1.60E-05 1.8E-05 3.0E-06 7.60E-04 6.0E-05 2.0E-05
13-Apr-93 2.60E-05 2.0E-05 3.0E-06 3.40E-04 3.0E-05 2.0E-05
27-Jun-93 3.00E-05 l.4E-05 3.0E-06 O.OOE+OO 3.0E-05 2.0E-05
27-0ct-93 3.lOE-05 l.6E-05 3.0E-06 4.20E-04 6.0E-05 2.0E-05
01-May-94 2.00E-05 5.0E-06 3.0E-05 3.90E-04 8.0E-05 2.0E-04
19-Jul-94 1.75E-05 1.7E-06 7.6E-08 1.30E-04 7.8E-06 3.8E-07
16-Nov-94 1.00E-04 9.0E-06 l.5E-07 2.60E-04 l.2E-05 7.4E-07
05-Apr-95 1.70E-05 1.5E-06 1.6E-07 1.60E-04 l.5E-05 8.lE-07
07-Jul-95 6040E-06 6.0E-07 lo4E-07 4040E-05 4.2E-06 7.0E-07
09-Nov-95 2.30E-05 2.2E-06 1.7E-07 6.60E-05 9.6E-06 8.3E-07
24-Apr-96 4.20E-05 2.2E-06 1.7E-07 1.00E-04 6.7E-06 1.8E-07
31-Jul-96 * * ****
14-Nov-96 2.WE-05 2.0E-06 lo6E-07 1.90E-04 7.3E-06 8.2E-07
21-Apr-97 5050E-06 4.2E-07 lo4E-07 3.30E-05 3.9E-06 7.0E-07
05-Sep-97 5.30E-06 3.2E-07 l.3E-07 I.90E-05 6.9E-07 6.3E-07
20-Nov-97 2.50E-05 9.5E-07 5.9E-07 I.30E-04 4.7E-06 1.2E-07
26-Mar-98 <7.90E-05 7.9E-05 7.9E-05 <3.90E-04 3.9E-04 3.9E-04
16-Jun-98 3.60E-07 lo4E-07 3.3E-OS <1.7E-07 l.7E-07 l.7E-07
09-Nov-98 4.30E-05 1.OE-06 7.6E-OS 2.50E-04 l.OE-05 3.8E-07------_._--
15-Apr-99 2040E-05 I.OE-06 1.2E-07 1.70E-04 S.OE-06 6.2E-07
07-Jul-99 2.23E-05 8.6E-07 I.2E-07 2.30E-04 7.0E-06 5.9E-07
07-Dec-99 1.50E-04 3.0E-06 2.0E-07 1.70E-05 1.0E-06 l.OE-06
21-Apr-OO l.OOE-04 2.0E-06 1.2E-07 l.lOE-04 7.0E-06 6.IE-07
22-Jun-OO 1.30E-06 I.OE-07 2.4E-07 2.00E-04 1.0E-05 l.2E-06
2l-Dec-OO 1.20E-06 9.0E-07 2.4E-07 1.20E-04 3.0E-05 1.2E-06
30-Apr-OI 1.80E-06 l.OE-07 l.7E-07 <8.3E-07 N/A 8.3E-07
14-Jun-Ol 2.60E-06 2.0E-07 9.9E-08 l.lOE-06 2.0E-08 5.0E-07
I7-Dec-OI 2.63E-06 4.6E-05 1.2E-07 9040E-05 3.7E-06 6.0E-07
07-May-02 3.50E-05 2.2E-06 7.6E-07 1.36E-04 5.6E-06 l.OE-05
07-Jul-02 4.02E-05 2.3E-06 7.6E-07 7.04E-05 4.lE-06 l.OE-05
l5-Dec-02 8.lOE-05 3.9E-06 7.6E-07 2.87E-04 8.SE-06 I.OE-05
21-Mar-03 3.70E-05 2.6E-06 204E-06 2.69E-OS 2.OE-06 3.7E-06
lO-Jun-03 1.30E-05 1.0E-06 5.2E-07 <l.ODE-07 l.OE-07
20-Nov-03 l.60E-04 1.3E-05 1.2E-07 l.42E-04 604E-06 5.9E-07
08-Apr-04 1.40E-04 7.7E-06 l.lE-07 6.lOE-06 2.7E-06 5.5E-07
12-Jun-04 6.5IE-05 3.2E-06 l.5E-07 5.27E-05 4.9E-06 7.6E-07
30-Nov-04 8040E-05 5.7E-06 3.0E-08 3.39E-04 1.6E-05 3.0E-07
21-Apr-05 1.70E-OS 1.6E-06 l.3E-07 4050E-05 3.5E-06 6.5E-07
B-Jun-05 1.50E-05 1.6E-06 1.4E-07 7.00E-05 5.lE-06 6.9E-07
1O-Nov-05 3.80E-05 2.lE-06 8.6E-lO 1.20E-06 4.8E-08 4.3E-1O
03-Apr-06 l.OOE-04 6.0E-06 5.0E-OS 3.30E-04 l.lE-05 1.OE-06
I"~,r-':
:i·<.
J."
~<t·
I6-Jun-06 3AOE-OS 2.5E-06 5.0E-OS l.37E-04 6.0E-06 l.OE-06
2S-Nov-06 7.3IE-OS 3.20E-06 1.60E-07 2.98E-04 S.50E-06 8.20E-07
30-Mar-07 3.00E-OS 2.20E-06 l.70E-07 3.20E-04 7.90E-06 8.40E-07
I-Jun-07 I.IOE-04 4.60E-06 2.3-07 3.20E-04 1.l0E-OS 1.l0E-06
I I9-Nov-07 II S.60E-osll s.2oE-0611 s.oOE-0811 6.40E-0411 1.90E-Osll 1.00E-061
22-Apr-08
I8-Jun-08
3.20E-05
I.2SE-OS
2.30E-06
2.20E-06
7.20E-07
l.SOE-06
2.30E-04
5.00E-05
1.50E-05
3.00E-05
I.OOE-06
4.80E-03 :-:'
1.00E-05
1.00E-06
1.00E-07
-Gl
iiiuen 1.00E-08
C)o..J-
1.00E-09
1.00E-10
Cottonwood Creek Dissolved Radionuclide Concentrations
(uCi/ml)
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------~----------------------------~---------
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!~~~~~~~~+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
------------------------------------------------------------------------~---------------~------
m~m1!!!!~!!!1!!~1!!m1~1H!m~!!~m~mmmmm~mmm!~m!mmm~~mm~!r
-l~~~~~~~~~~~~~~~~~~~~I~~~~~~~~~~~~~~~~~~~~~~~~~~~~!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~----------------------------------------------------------------------------.-------------------------
- - - --.- --A---.-.---.-.-- - --.- - - - - -..- -..- --.- - --.--••- --.-..- - --.--.-..--.--.-.-.-.-..- -..-.-----------------------------------------------------------------------------------------------------------------------------------------------------------------------
1.00E-11
OJOJfl..,~"~*\,,OJ~1
~';,,,OJ
C(}o/
~<:)~1f"OJ
R:J<:)fl..,
~~
"rV'"
~~~~fl..,'5 R:J<:)COC(}<r}~
I.U-Nat.-Th-230 A Ra-2326I
1.00E-06
1.00E-07
CD
iV(Jen 1.00E-08
C)o...I-
1.00E-09
Cottonwood Creek Suspended Radionuclide Concentrations (uCi/ml)
----"""==~:::'=:""'==1
-----:::-----:-:::::::1-------------.------1-------
JIA __------------------------------------------------------------------------------------------------------
•
•
------------
------------------------------------------------------------------~------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------.---------------------------------A------------------------------------------------------------------------------------------------~---------------------------
- -iII-- - - - -.-- - - -__- - - - - -II-- - -11-- - - - - - - - - --ill- ---II!--II!- - --11--111---11--11-- -..--11---11-- ---II!--II - -II----11---111-- --11--..
1.00E-10
~~
"q)~~
~'o~"q)<,},,<-)
Oj~
(\\"~'l-
~Oj~"q)
tV-OJ
s::>~<::s
("\':i-~v
~r::::,"~'V,,"
r.>~r::::,
("\<:§.
':i-v
s::>t><~~~s::>~~\,,1>1
"I').)
~~r::::,("\qJ.~v
I.U-Nat.ilIi Th-230 ~Ra-226I
ldir&?ENERGY LABORATORIES,INC.*2393 Salt Creek Hwy (82601)*PO Box 3258 *Casper,Wi'82602
UM.Mfi.tiV4f Toll Free 888.235.0515 *307.235.0515 *FAX[phone] *[e-mail] *www.energylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab ID:
Client Sample 10
Denison Mines (USA)Corp
Quarterly Radionuclide
COB040233-001
5046 Filter and Beaker
Report Date:05/14/08
Collection Date:03/27/08
DateReceived:04/02/08
Matrix:Air
MCU
Analyses Result Units Qualifier RL QCL Method Analysis Date I By
TRACE METALS·DISSOLVED
Uranium,Activity 4770 pCl/Filter 0.2 SW6020 04/27/0820:541ts
RADIONUCLIDES·TOTAL
Lead 210 -9.4 pCi/Fi~er 1.0 E909.0M 04/16/08 11 :30 I dm
Lead 210 precision (±)4.2 pCi/Fi~er E909.0M 04/16/08 11 :301 dm
Thorium 230 6.3 pCi/FIlter 0.2 E907.0 04114/08 10:30 I dmf
Thorium 230 precision (±l 1.7 pCi/Filter E907.0 04114/08 10:30 I dmf
Radium 226 0.7 pCilFilter U E903.0 04/24/08 12:371 trs
Radium 226 precision (±)0.9 pCi/FiIler E903.0 04124/08 12:37I trs
Radium 226 MDC 1.4 pCI/Filter E903.0 04124/08 12:37I trs
Report
Definitions:
RL -Analyte reporting limit.
QCL -Quality controllim~.
MOC -Minimum detectable concentration
MCl-Maximum contaminant level.
ND -Notdetected at the reporting limit.
U -Not detected at minimum detectable concentration
I#"lirlfiif ENERGY LABORATORIES,INC••2393 SaltCreek Hwy(82601)•PO Box 3258 •Casper,WY 82602
R':I.MfMM'1 Toll Free 888.235.0515'307.235.0515'FAX [phone]'[e-mail] •www.energylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
LablD:
Client Sample ID
Denison Mines (USA)Corp
Quarterly Radionuclide
C08040233-002
5047 Filterand Beaker
Report Date:05/14/08
Collection Date:03/27/08
DateReceived:04/02/08
Matrix:Air
.-.,'.';
MCU
Analyses Result Units Qualifier Rl QCl Method Analysis Date 1By
TRACE METALS -DISSOLVED
Uranium,Activity 4190 pCl/Filter 0.2 SW6020 04127/08 21:15/Is
RADIONUCLlDES· TOTAL
Lead 210 0.0 pCI/Filter 1.0 E909.0M 04116108 11:30 1dm
lead210 precision (±)4.8 pCilFilter E909.0M 04/16/0811:30 /dm
Thorium 230 6.1 pel/Filter 0.2 E907.0 04/14/08 10:30/dmf
Thorium 230 precision (±)1.5 pCilRlter E907.0 04/14/08 10:301dmf
Radium 226 0.2 pCilFilter U E903.0 04/24108 14:07/trs
Radium 226 precision (±)0.8 pCI/Filter E903.0 04/24/08 14:071 trs
Radium 226 MOC 1.4 pCilFilter E903.0 04/2410814:07/IrS
1<-'
i>:
Report
Definitions:
Rl-Analyte reporting limit.
QCL-Quality control limit.
MDC -Minimum detectable concentration
.".
MCl-Maximum contaminant level.
ND -Not detected at the reporting limit.
U -Not detected at minimum detectable concentration
ENERGYLABORATORIES•../NC••2393SaltCreek Highway(82601)•Ao.BoxJ.~58 •Casper,WY82602
7011FrelJ 888.235.0515 •J01(0515 •Fax [phone] •casper@energylab.l{'.www.enetgylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Client Sample ID
Denison Mines (USA)Corp
1st Quarter Surface Water
C08031200-001
CottonWOOd Creek
Report Date:04/25/08
Collection Date:03/27/0808:09
DateReceived:03128/08
Matrix:Aqueous
MeL!
Analyses Result Units Qualifiers Rl QCl Method Analysis Date I By
PHYSICAL PROPERTIES
Solids,Total Dissolved TDS@ 180 C 411 mg/L 10 A2540C 04/02108 15:50I dd
Solids,Total Suspended TSS @ 105 C 54 mg/L 1 A2540 D 04/0110803:31/del
._----_._---------------
..;~:.
Report RL -Analyte reporting limit.
Definitions:QCl -Quality control limit.
Mel -Maximum contaminant level.
ND -Not detected attile reporting limit.
ENERGYLABORATORIES-INC••2393Salt CreekHighway(82601)•P.O.Box3258 •Casper,WY82602
To!1 Free 888.235.0515 •30r~"f.0515 •Fax [phone] •casper@energyla1J{- •www.energylab.com
~:'".
LABORATORY ANALYTICAL REPORT
Client:Denison Mines (USA)Corp Report Date:06/20/08
Project:2nd QuarterSemi-Annual Surface Water Collection Date:05/13/0808:30
lab 10:C08050705-0Q1 DateReceived:05/15/08
Client Sample ID Cottonwood Creek Matrix:Aqueous
MCU
Analyses Result Units Qualifiers Rl QCL Method Analysis Date I By
PHYSICALPROPERTIES
Solids,Total Dissolved TDS @ 180 C 473 mg/L 10 A2540 C 05/1610815:14 Jdd
Solids,Total Suspended TSS @ 105 C 8 mglL 1 A2540 D 05/17/08 10:21 I sp
METALS·DISSOLVED
Uranium 0.0136 mg/L 0.0003 E200.8 05/30/08 22:39 I ts :..'~
METALS·SUSPENDED I:•.
Uranium 0.0003 mg/l 0.0003 E200.8 05/27/08 21 :381 sml I'.
I
RADIONUCLlDES·DISSOLVED
GrossAlpha minus Rn &U 2.6 pC11L 1.0 E900.1 05/29/08 22:55 I crw
GrossAlpha minus Rn &U Precision (±)0.6 pCilL E900.1 05/29/08 22:55 I crw
Radium 226 0.1 pCi/l U E903.0 05129/08 14:20 Ilaj
Radium 226 precision (±)0.1 pCill E903.0 05/29/0814:20/taj
Radium 226 MOe 0.2 pCi/L E903.0 05f29/08 14:20/laj
Thorium 230 0.1 pCi/l U 0.2 E907.0 06f02I08 15:00 1dmf
Thorium 230 precision (:t)0.2 pCIIL E907.0 06f02l08 15:00 I dmf
RADIONUCLlDES·SUSPENDED
Radium 226 -0.8 pCi/L U E903.0 06f02/08 21:44 I laj
Radium 226 precision (±)0.9 pCilL E903.0 06/02/0821:44/taj
Radium 226 MOC 1.7 pCi/l E903.0 06/02/0821:44 I taj
Thorium 230 0.9 pCill 0.2 E907.0 05/23/0810:30 I dm!
Thorium 230 precision (i)0.9 pCi/L E907.0 05123/08 10:30/dmf
._----_._._--------------------
Report
Definitions:
RL -Analyte reporting Iimil.
QCL -Quality controllimil.
Moe·Minimum detectable concentration
MCl•Maximum contaminant level.
ND -Not detected at the reporting limit.
U -Notdetected at minimum detectable concentration
ENERGYLABORATORIE5../NC••2393 SaltCreekHighway(82601).P.D.Box01/:58 .Casper.WY82802
J TollFree 888.235.0515 •30if:0515 •Fax [phone] •casper@energylab{.www.energylab.com
ANALYTICAL SUMMARY REPORT
April 25,2008
Denison Mines (USA)Corp
6425 S Hwy 191
Blanding,UT 84511
Workorder No.:C08031200
Project Name:1stQuarterSurface Water
Energy Laboratories,Inc.received the following 1 sample from Denison Mines (USA)Corp on 3/28/2008 for analysis.
Sample 10 Client Sample ID
C08031200-001 Cottonwood Creek
Collect Date Receive Date Matrix Test
0312710808:09 03/28108 Aqueous Solids,Total Dissolved
Solids,Tolal Suspended
As appropriate,any exceptions or problems with the analyses are noted in the Laboratory Analytical Report,the
QNQC Summary Report,orthe Case Narrative.
If you have any questions regarding these tests results,please call.
Report Approved By#-c:=.~~
ENERGYLABORATORIES,INC••2393SaltCreekHighway(82601)'RD.Box32.58 •Casper;WV82802
TollFree 888.235.0515 •307.(1515'Fax [phone] •casper@energylab,c(www,energylab.com
QA/QC Summary Report
Client:Denison Mines (USA)Corp
Project:1st Quarter Surface Water
Report Date:04125/08
Work Order:C08031200
Batch:080402_1_SLDS-TDS-W
RL %REC Low Limit High Limit RPD RPDLimit QualResultUnitsIAnalyte ,
Method:A2540 C
Sample 10:MBLK1_080402
Solids,Total Dissolved TDS @ 180 C
Method Blank
NO mg/L
Run:BAl.1_0a0402B
6
04/02/08 10:00
Sample 10:LCS1_080402
Solids.Total Dissolved TOS @ 180 C
Sample 10:COa031200·0D1AMS
Solids.Total Dissolved TOS @ 180 C
Sample 10:COa031200·001AMSD
Solids,Total Dissolved TOS @ 180 C
Laboratory Control Sample
994 mg/L
Sample Matrix Spike
2430 mg/L
Sample MatrixSpike Duplicate
2390 mg/L
Run:BAL·1_080402B 04/02/08 10:00
10 99 90 110
Run:BAl·1_080402B 04/02/08 15:51
10 101 90 110
Run:BAl-1_0B0402B 04/02/0815:51
10 99 90 110 1.7 10
:"...;
,.,-..I·
Method:A2540 0 Batch:080401A-SLDS-TSS·W
Sample 10:MBlK1_080401A
Solids,Total Suspended TSS @ 105 C
Method Blank
ND mg/L
Run:BAl-l_0B0401C
0.7
04/0110808:31
Sample 10:COa031200·001ADUP
Solids,Total Suspended TSS @ 105 C
Sample Duplicate
48.0 mg/L
Run:BAL-l_0B0401C
1.0 12
04/01/0808:32
25
Qualifiers:
RL -Analyte reporting limit.NO -Not detected at the reporting limit.
page-J-of-l-Chain of Custody and Analytical Request RecordllilJlmr~
''4P.:l_Z:&fi-Z;l@f'I
compa:rs:,M7""",-e.\.
Project Name.PWS #'?imit #.Etc.:
,J.,'AfJSO~1~,IA/'II"~'T>~<..I'J.~".;::::-/...J"'~O
Report Mail Address:ContacfN'ame,Phone,Fax,E-mail:l(3S t '1-~?'Z.."2!Sampler Name if other than Contact::t,-o.!3~&>1 .
....aVlCI,~iA-T X <.fS;I J
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.".01'\1"1,"",,6'.AA.A 'JM.IA"'I~\1't'J~
InlJoiceAddress:~.:.:.l5'CO"""~o ~Purchase Order#:ELI Quote#:
J"C:::;)4 /'\~\l\~Ju~L t.t!:>5'tt-r '(;ZZI
..JtnG
Report Required For:POTWIWWTPO DWO <::A NP L't 81 :;F Ec RU ~~IIt:0 Notify Ell prior to RUSH Shipped by:NOr0(1)0""sample submittal for additionalOtherliico~U.p5 A1<S ~
.6>g>~charges and scheduling coo~~4tJ:...JSpecialReportFormats-ELI must be notified prior to J:!!(I»l~ClsamplesubmittalforthefolloWing:6 ~:!lol ill fi Comments:
(.)<Co ""~ReC~tTe~Pc .NELACO A2LAO LeveilVO ....~SQ ~::r:c coa..~en 0 'C'-~o eu c:-g1l'"CIlI.21 ~::lOthere ::l ,,",tOdYS~E a.~III ~eE-Sl if '"EDDIEDT 0 Format E to Intact Y~8)31 «J2 E~.::Signature Y N~l ill tt;::J:SAMPLE IDENTIFICATION Collection Collection ill E ~Match
(Name.Location.Interval.etc.)Date lime MATRIX (f)~Lab 10
1 (~'If~p/,..vt?\,./(~:ee "-1~·nA~N<IJ'I 2.,1IJ i/I >:i
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3 -IU
4 ~
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Custody Rt?::::by (PI2 Lw OK""
Dat"fftme:12.':"0J A ~w:;~t>\\\~'i (~~:}~~()~q::y)~Ilu\??'t..111t-'111LibRecordRelinqbishedl>y (pOllt):DatefTime:I'Signature:Received by (PrlJlt):I Dalelrune:SI9~alurG·.VMUSTbe
Signed LABORATORY USE ONLY
Samele Diseosal:Return toclient:Lab Disposal:SampleType:#offractions
In certain circumstances,samples submitted to Energy Laboratories,Inc.may be subcontracted to othercertified laboratories In ordertocomplete the analysis requested.
Thisservesas notice ofthlsposslbfllty.All sub-eontract data will beclearlynotatedon your analytical report.
Visit our web site at www.energylab.com for additlonallnformation,downloadable fee schedule,forms,&links.
'"i
Energy Laboratories Inc
Workorder Receipt Checklist
Denison Mines (USA)Corp
(0
IIIIII~~~I~IIIII!1111111111~lll'!I~~I~I~~
C08031200 ~'.';1·"'"
Login completed by:Kimberly Humiston
Reviewed by:
Reviewed Date:
Date and Time Received:3/28/2008 9:30 AM
Received by:jm
Carrier name:Next Day Air
Shipping container/cooler in good condition?
Custody seals intacton shipping container/cooler?
Custody seals intact on sample bottles?
Chain of custody present?
Chain of custody signedwhen relinquished and received?
Chain of custody agrees with sample labels?
Samples In proper containerlbottle?
Sample containers intact?
Sufficient samplevolume for indicated test?
Ail samples received within hoiding time?
Containerrremp Blank temperature in compliance?
Water"VOA vials have zero headspace?
Water-pH acceptable upon receipt?
~0
~0
~D
~0
~0
~0
~0
~0
~I{/
~s0
~0
~D
~0
~D
~D
~D
~D
~D
~D
~D
~D
~D
~D
~D
~D
~D
Not Present 0
Not Present 0
Not Present I{/
4·C On Ice
No VOAvials submifted I{/
NotApplicable 0
..........................._--------------------__-----__--------------------------____--------------__-__-___- --_............______-__-------_..------------__-----------------_.___-__-----_.._--___------..
Contact and Corrective Action Comments:
None
ENERGYLABORATORIES•.INC••2393SailCreekHighway(82801)•P.D.Box3258 •Casper.WY82602
TollFree 888.235.0515 •307(·0515 •Fax [phone] •casper@energylab.([·r ..www.enelgy!ab.com'..:~<,
Date:25-Apr-08
CLIENT:Denison Mines (USA)Corp
Project:1st Quarter Surface Water
Sample Delivery Group:C08031200
CASE NARRAriVE
THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT
ORIGINAL SAMPLE SUBMITTAL(S)
All original sample submittals have been returned with the data package.
SAMPLE TEMPERATURE COMPLIANCE:4°C (±2°C)
Temperature ofsamples received may not be considered properly preserved by accepted standards.Samples that are
hand delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process
has begun.
GROSS ALPHA ANALYSIS
Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters.Data provided
by this method for non potable waters should be viewed as inconsistent
RADON IN AIR ANALYSIS
The desired exposure time is 48 hours (2 days).The time delay in returning the canister to the laboratory for processing
should be as short as possible to avoid excessive decay.Maximum recommended delay between end of exposure to
beginning of counting should not exceed 8 days.
SOIUSOLJD SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE,SIMAZINE AND PCB ANALYSIS USING EPA 505
Data for Atrazine and Simazine are reported from EPA 525.2.not from EPA 505.Data reported by ELI using EPA method
505 reflects the results for seven individual Aroclors.When the results for all seven are ND (not detected),the sample
meets EPA compliance criteria for PCB monitoring.
SUBCONTRACTING ANALYSIS
SUbcontracting of sample analyses to an outside laboratory may be required.If so,ENERGY LABORATORIES will utilize
its branch laboratories or qualified contract laboratories for this service.Any such laboratories will be indicated within the
Laboratory Analytical Report.
BRANCH LABORATORY LOCATIONS
eli-b -Energy Laboratories,Inc.-Billings.MT
eli-g -Energy Laboratories,Inc.-Gillette,WY
eli-h -Energy Laboratories,Inc.-Helena,MT
eli-r -Energy Laboratories,inc.-Rapid City,SO
eli-t -Energy Laboratories,Inc.-College Station,TX
CERTFICATIONS:
USEPA:WY00002;FL-DOH NELAC:EB7641;Arizona:AZ0699;California:02118CA
Oregon:WY200001;Utah:3072350515;Virginia:00057;Washington:C1903
ISO 17025 DISCLAIMER:
The results of this Analytical Report relate only to the items submitted for analysis.
ENERGY LABORATORIES,INC.-CASPER,WY certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities.Some results requested by the client may not be covered
under these certifications.All analysis data to be sUbmitted for regulatory enforcement should be certified in the sample
state of origin.Please verify ELI's certification coverage by visiting www.energylab.com
ELI appreciates the opportunity to provide you with this analytical service.For additional information and services visit our
web page www.energylab.com.
ENERGYLABORATORIES,INC.•2393Salt CreekHighway (82801)•Ro.Box ~258 •Casper,WY82602
701/Free 888.235.0515 •30r "'\0515 •Fax [phone] •casper@energyiab.(•www.energylab.com
.J I.\.
ANALYTICAL SUMMARY REPORT
June 20,2008
Denison Mines (USA)Corp
6425 S Hwy 191
Blanding,UT 84511
Workorder No.:C08050705
Project Name:2nd QuarterSemi-Annual Surface Water
Energy Laboratories,Inc.received the following 1 sample from Denison Mines (USA)Corp on 5/15/2008for analysis.
l:'~;:
Sample ID Client Sample 10
C08050705-001 Cottonwood Creek
Collect Date Receive Date Matrix
05/13/0808:30 05/15/08 Aqueous
Test
Sample Filtering
Uranium,Dissolved
Uranium,Suspended
Digestion,Total Metals
Gross Alpha minus Rn222 and Uranium
Radium 226,Dissolved
Radium 226,Suspended
Thorium,Isotopic
Thorium,Suspended Isotopic
Solids,Total Dissolved
Solids,Total Suspended
i,l:
As appropriate,any exceptions or problems with the analyses are noted in the Laboratory Analytical Report,the
QAlQC Summary Report,or the Case Narrative.
If you have any questions regarding these tests results,please call.
Report Approved By:~,~~RLSrofj
I:'"
r:'·::
;..
ENERGYLABORATORIES,INC,.2393Salt Creek Highway(82001)•P.o.Box 3258 .Casper,WY82602
lOtIFree 888.235.0515 •301).""0515 'Fax [phone] •casper@enetgylab.a"·-·www.energylab.com•l.,,-~
QAIQC Summary Report
Client:Denison Mines (USA)Corp
Project:2nd Quarter Semi-Annual Surface Water
Report Date:06/20/08
Work Order;C08050705
Analyte Result Units RL %REC Low Limit High limit RPD RPDLlmit Q~~---'l
)
Method:A2540 C Batch:080516_1_SLDS-TDS-W
Sample 10:MBLK1_080516 Method Blank Run:BAL-l_080521A 05/16108 15:05
Solids,Total Dissolved TDS @ 180 C 10 mg/L 6
Sample ID:LCS1_080516 Laboratory Control Sample Run:BAL-1_080521A 05/16108 15:05
Solids,Total Dissolved TDS @ 180 C 1000 mgtL 10 97 90 110
Sample ID:C08050700·002EMS Sample Matrix Spike Run:BAL·C080521A 0511610815:12
Solids,Total Dissolved TDS @ 180 C 3300 mg/L 10 100 90 110
Sample 10:COB050700·002EMSD Sample Matrix Spike Duplicate Run:BAL-1_080521A 05/16/0615:12
Solids,Tolal Dissolved TOS @ 180 C 3290 mglL 10 102 90 110 0.4 10
Method:A2540 0 Batch:080517A·SlDS-TSS-W
Sample10:MBlK1_0B0517A Method Blank Run:BAL-1_080517A 05/17/0810:14
Solids,Total Suspended TSS @ 105 C NO mglL 0.7
Sample10:C08050744·007ADUP Sample Duplicate Run:BAL-1_080517A 05/1710810:17
Solids,Total Suspended TSS @ 105 C ND mglL 1.0 0.0 25
Method:E200.S Batch;18653
Sample to:MB-18653 Method Blank Run:ICPMS2-C_080603A 06103108 22:39
Uranium 5E·05 mglL 2E-05
Sample 10:LCS1·186S3 Laboratory Control Sample Run:ICPMS2-C_080603A 06/03108 22;46
Uranium 0.0230 mg/L 0.00030 109 80 120
Sample 10:C08050737-0011MS4 Post Digestion Spike Run:ICPMS2-C_080603A 06/03/08 23:06
Uranium 0.0510 mg/L 0.00030 101 70 130
Sample 10:C08050737-0011MSD4 Post Digestion Spike Duplicate Run:ICPMS2-C_OB0603A 06/03/08 23:13
Uranium 0.0518 mg/L 0.00030 103 70 130 1.6 20
-----------------------------
Qualifiers:
Rl -Analyte reporting limit.ND-Not detected atthe reporting limil.
ENERGYLABORATORIES,JNe.•2393SaltCreekHighway(82601)•P.D.Box~g58 •Casper,WY82602To/~Free 888,285.0515 •307;'0515'Fax [phone] •casper@energylab.q·.wlWI.energylab.com
QAlQC Summary Report
Client Denison Mines (USA)Corp Report Date:06/20/08
Project:2nd Quarter Semi-AnnualSurface Water WorkOrder:C08050705
Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual !I::':
Method:E200.8 Batch:R101950
Sample 10:LRB Method Blank Run:ICPMS2-e_080530A 05{30108 16:24
Uranium ND mg/L 1E-05
Sample 10:LFB Laboratory Fortified Blank Run:ICPMS2-e_080530A 05{30/08 16:28
Uranium 0.0541 mg/L 0.00030 108 85 115
Run:ICPMS2-C_080530A
.~:,
Sample 10:C08051207-001 BMS Sample MatriX Spike 05/30/08 23:12
Uranium 0.0713 mg/L 0.00030 101 70 130 ,,._.
Sample 10:C08051207-001 BMSO Sample Matrix Spike Duplicate Run:ICPMS2-e_080530A 05130/08 23:29
Uranium 0.0788 mg{L 0.00030 116 70 130 10 20
Method;E900.1 Batch:GA-0132
Sample ID:LCS·GA·0132 Laboratory Control Sample Run:G5000W_080527A 05/29/0822:55
Gross Alpha minus Rn &U 27.2 pCi/L 1.0 99 70 130
Sample 10:MB·GA-0132 Method Blank Run:G5000VV_080527A 05129/08 22:55
Gross Alpha minus Rn &U 1 pCi/L
Sample 10:COB050764·003BMS Sample Matrix Spike Run:G5000VV_080527A 05/29/08 22:55
GrossAlpha minus Rn &U 23.2 pCl/L 1.0 73 70 130
Sample 10:C08050764·003BMSO Sample Matrix Spike Duplicate Run:G5000VV_080527A 05/29{08 22:55
Gross Alpha minus Rn &U 26.8 pCI/L 1.0 86 70 130 14 24.5
Method:E903.0 Batch:18653
Sample 10:C08050601·001ADUP Sample Duplicate Run:BERTHOLD 770_080527A 06/02{08 15:56
Radium 226 -1.2 pCi/L 70 130 7.7 134.8 U
Sample 10;COa050705·001BMS Sample Matrix Spike Run:BERTHOLD 770_0a0527A 06/0210821:44
Radium 226 63 pCi/L 81 70 130
;..
Sample 10;C08050705-001BMSO Sample Matrix Spike Duplicate Run:BERTHOLD770_0a0527A 06/02/08 21 :44
Radium 226 62 pCilL 79 70 130 2.2 25.2
Sample 10:MB-18653 Method Blank Run:BERTHOLD 770_080527A 06/0210821:44
Radium 226 -2 pCilL U
Sample 10;LCS-18653 Laboratory ControlSample Run:BERTHOLD nO_080527A 06/02/0821:44 '.-,.'
,,:.;.,
Radium 226 13 pCilL 92 70 130
Qualifiers:
RL -Analyte reporting limit.
U -Not detected at minimumdetectable concentration
ND -Not detected at the reporting limit.
ENERGYLABORATORIES,INC.•2393Sal!Creek Highway(82601/•P.O.Box3gS8 'Casper,WY82602
ToI!Free 888.235.0515 •301('~051S •Fax [phone] •casper@energylflb{.'www.energylab,com
QA/QC Summary Report
Client:Denison Mines (USA)Corp
Project:2nd QuarterSemi-Annual Surface Water
Report Date:06120108
Work Order:C08050705
IAnalyte Result Units RL %REC Low Limit High limit RPD RPDUmit Qual i 1"!
Method:E903.0 Batch:RA226-2820
Sample 10:TAP WATER·M$Sample MatrixSpike Run:BERTHOLD 770_080521A 05/29/08 15:57
Radium 226 7.4 pCi/L 91 70 130
Sample 10:TAPWATER-MSD Sample MatrixSpikeDuplicate Run:BERTHOLD 770_080521A 05/29/08 15:57
Radium 226 8.2 pCiIL 101 70 130 9.6 23.1
Sample 10:MB-RA226-2820 Method Blank Run:BERTHOLD 770_080521A OS/29/0815:57
Radium 226 -0.1 pCi/l U
Sample to:LCS·RA226·2820 laboratory Control Sample Run:BERTHOLD 770_080521A 05/29/0815:57
Radium 226 7.9 pCill 102 70 130
Method:E907.0 Batch:18653
Sample 10:C08050601-001ADUP Sample Duplicate Run:EGG.QRTEC_OB0523A 05/23/0810:30
Thorium 230 ·0.095 pCi/l 0.20 70 130 0.0 30
Sample 10:COB050701-004AMS Sample Matrix Spike Run:EGG-ORTEC_OB0523A OS/23/0B 10:30
Thorium 230 82.5 pei/Filter 0.20 B8 70 130
Sample 10:COB050701·004AMSD Sample MatrixSpike Duplicate Run:EGG-DRTEC_080523A 05123108 10:30
Thorium 230 89.3 pCi/Filter 0.20 96 70 130 8.0 30
Sample 10:LCS·R101872 Laboratory Control Sample Run:EGG.QRTEC_080523A 05/23/08 10:30
Thorium 230 55.2 pei/Filter 0.20 115 70 130
Sample 10:MB-R101872 Method Blank Run:EGG·ORTEC_080523A 05123/08 10:30
Thorium 230 0.7 pei/Filter
Method:E907.0 Batch:R102465
Sample 10:LCS·R102465 laboratory Control Sample Run:EGG·ORTEC_080602D 06102/08 15:00
Thorium 230 7.50 pClIl 0.20 109 70 130
1"_,•.,
Sample 10:C08050737·001HMS Sample Matrix Spike Run:EGG·ORTEC_080602D 06/02108 15:00
Thorium 230 16 pCifl 0.20 99 70 130
Sample ID:C08050737·001HMSD Sample Matrix Spike Duplicate Run:EGG·ORTEC_080602D 06/02/08 15:00
Thorium 230 17 pCi/l 0.20 103 70 130 5.4 30
Sample 10:MB·R102465 Method Blank Run:EGG-ORTEC_080602D 06/02108 15:00
Thorium 230 NO pCi/L
-------------~..__._.__._......_------------------
Qualifiers:
RL •Analyte reporting limit.
U •Notdetected at minimum detectable concentration
NO •Not detected at the reporting limit.
ENERGYLABORATORIES,INC..2898Sail CreekHighway(82801J •P.O.Box:g58 •Casper,WY82802
To(IFree888.235.0515 •301~0515 •Fax 307.234,1839 •casper@energylab.(•www.energylab.com
QA/QC Summary Report
Client:Denison Mines (USA)Corp
Project 2nd Quarter Semi-Annual Surface Water
Report Date:06/20/08
Work Order:C08050705
IAnalyte Result Units RL %REC LowLimit High limit RPD RPOUmit Qual
i·:
Method:SW6020 Batch:18653
Sample 10:MB-18653 Method Blank Run:ICPMS1-C_080527A 05/27/0820:31
Uranium ND mg/filler 6E~5
Sample10:LCS1-18653 Laboratory Control Sample Run:ICPMS1-C_080527A 05/27/08 20:45
Uranium 0.0503 mg/filter 0.00030 95 75 125
Sample 10:C08050701~06AMS Sample MatrixSpike Run:[CPMS1-C_Oa0527A 05127/0821 :31
Uranium 0.0502 mg/fllter 0.00030 100 75 125
SamplelD:COB050701·006AMSD Sample MatrixSpikeDuplicate Run:ICPMS1-G_080527A 0512710821:34
Uranium 0.0503 mg/filter 0.00030 100 75 125 0.2 20
Qualifiers:
RL -Analyte reporting limit.ND -Not detected at the reporting limit.
Page-L ofLChainofCustodyandAnalyticalRequestRecordmHJ:lf!j7mt.:t.,Utifi_UU4W PLEASE PRINT,provide as much
Company Name:Project N;re'i:)~#,Permit #,Etc.:_
])~V'\.\s.."AJ IN\.:_I;;::"2 I~,,If,<o't-,,?/Se~'C{vv.-~S"V'.ffI.?C::[I./,t1-7ZrL
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Report Mail Address:gat Contact Name,Phone,Fax.E-mail:Sampler Name if other than Contact:
f:>'O.~'0<4JS:{'1~'22.-z.../
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Invoice Address:Invblce Contact &Phone #:Purchase Order#:ELI Quote#:
>~~l:LAo.J~-t:>lu.i..IC pl..43S (,-=f~2Z2.[
Report Required For:POTWIWWTpD DwD c:A NA L'l 81 S F E(~U J;::::J ,It:D Notify Ell prior to RUSH urf4;RJaIJ0
Other rnO~~sample submittal for additionalOJcoa;.E>ar~charges and scheduling r1~<-.Special Report Formats -ELI must be notified priorto ~fJ»'~~-..£~0 Comments:sample submittal for the following:g :;::~Ol j UJ ~o~b3l;'~~Recei~~pc '."lNELAcDA2LADLeveilVO'0 8.£~'1 :r:c.c::§~0 "0'-~'5 ~....s:c 'g~Q)CJ)j ,21 ~~::lOther~e ::l Cu'tody Sea~E Q.~!Xl I-eE2'"EDD/EDT 0 Format '-f:'"Intact Y~~~I ~'-':>~«t2 E~'-'\t2 Signature Y N~I <:;)f".~/-4 UJ {ij ::cSAMPLEIDENTIFICATIONCollection Collection
....W E en Match
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APPENDIX 8
SITE HYDROLOGY AND ESTIMATION OF GROUNDWATER
TRAVEL TIMES IN THE PERCHED ZONE
AUGUST 27,2009
SITE HYDROGEOLOGY AND
ESTIMATION OF GROUNDWATER TRAVEL TIMES
IN THE PERCHED ZONE
WHITE MESA URANIUM MILL SITE
NEAR BLANDING,UTAH
Prepared for:
DENISON MINES (USA)CORP
Independence Plaza,Suite 950
1050 17'h Street
Denver,Colorado 80265
[phone]
Prepared by:
HYDRO GEO CHEM,INC.
5[W.Wetmore,Suite 101
Tucson,Arizona 85705-1678
[phone]
August 27,2009
HYDRO GEO CHEM,INC.
Environmental Science &Technology
TABLE OF CONTENTS
I.INTRODUCTION I
2.SITE HyDROGEOLOGy 3
2.1 Geologic Setting 3
2.2 Hydrogeologic Setting 4
2.3 Perched Zone Hydrogeology 5
2.3.1 Lithologic and Hydraulic Properties 6
2.3.2 Perched Groundwater Flow 10
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3.
4.
5.
PERCHED ZONE HYDROGEOLOGY BENEATH AND DOWNGRADIENT .
OF THE TAILINGS CELLS 13
3.1 Saturated Thickness 13
3.2 Perched Water Flow 14
3.3 Permeability IS
EVALUATION OF POTENTIAL FLOW PATHS AND TRAVEL TIMES FOR
HYPOTHETICAL SEEPAGE ORIGINATING FROM CELL #3 17
4.1 Estimated Travel Time From the Base of Cell #3 to the Perched Zone 17
4.2 Estimated Travel Time From Tailings Cell #3 to Ruin Spring 18
4.3 Estimated Total Travel Time from the Base of Tailings Cell #3 to Ruin Spring.19
REFERENCES 21
6.LIMITATIONS STATEMENT 23
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7
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TABLES
Peel Hydraulic Test Results
Results of July 2002 and June 2005 Hydraulic Tests
FIGURES
Approximate Elevation of Top ofBrushy Basin
Perched Water Levels,August 1990
Perched Water Levels,August 1994
Perched Water Levels,September 2002
Kriged Perched Water Levels,Isl Quarter,2009
Portion of USGS Black Mesa 7.5'Sheet Showing Approximate Location of Tailing Cells
in Relation to Nearby Canyons and Ruin Spring
Depth to Perched Water,Ist Quarter 2009
Perched Zone Saturated Thickness,Ist Quarter 2009
Site Hydrogeology &Est.GW Travel Times
H:\718000\hydrpt09\hydr0809.doc
August 27,2009
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1.INTRODUCTION
This report provides a brief description of the hydrogeology of the White Mesa Uranium
Mill Site,located south of Blanding,Utah,and focuses on the occurrence and flow of
groundwater within the relatively shallow perched groundwater zone at the site.Based on
available existing hydrogeologic information from the site,estimates of hydraulic gradients and
intergranular rates of groundwater movement (interstitial velocities)are provided.These
estimates are then used to calculate average travel times for a hypothetical conservative solute
(assuming no hydrodynamic dispersion)from tailings cell #3 at the site to a downgradient
discharge point.
Site Hydrogeology &Est.OW TnIVel Times
H:\7I8000\hydrpt09\hydr0809.doc
August 27,2009
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2.SITE HYDROGEOLOGY
Titan,1994 provides a detailed description of site hydrogeology based on information
available at that time.A brief summary of site hydrogeology that is based primarily on Titan,
1994,but includes the results of more recent site investigations,is provided below.
2.1 Geologic Setting
The White Mesa Uranium Mill site (the "Mill"or the "site")is located within the
Blanding Basin of the Colorado Plateau physiographic province.Typical of large portions of the
Colorado Plateau province,the rocks underlying the site are relatively undeformed.The average
elevation of the site is approximately 5,600 feet above mean sea level (ft amsl).
The site IS underlain by unconsolidated alluvium and indurated sedimentary rocks
consisting primarily of sandstone and shale.The indurated rocks are relatively flat lying with
dips generally less than 30.The alluvial materials consist mostly of aeolian silts and fine-grained
aeolian sands with a thickness varying from a few feet to as much as 25 to 30 feet across the site.
The alluvium is underlain by the Dakota Sandstone and Burro Canyon Formation,which are
sandstones having a total thickness ranging from approximately 100 to 140 feet.Beneath the
Burro Canyon Formation lies the Morrison Formation,consisting,in descending order,of the
Brushy Basin Member,the Westwater Canyon Member,the Recapture Member,and the Salt
Wash Member.The Brushy Basin and Recapture Members of the Morrison Formation,
classified as shales,are very fine-grained and have a very low permeability.The Brushy Basin
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Site Hydrogeology &Est.OW Travel Times
H:\718000\hydrpt09\hydr0809.doc
August 27,2009 3
Member is primarily composed of bentonitic mudstones,siltstones,and claystones.The
Westwater Canyon and Salt Wash Members also have a low average vertical permeability due to
the presence of interbedded shales.
Beneath the Morrison Formation lie the Summerville Formation,an argillaceous
sandstone with interbedded shales,and the Entrada Sandstone.Beneath the Entrada lies the
Navajo Sandstone.The Navajo and Entrada Sandstones constitute the primary aquifer in the
area of the site.The Entrada and Navajo Sandstones are separated from the Bun-o Canyon
Formation by approximately 1,000 to 1,100 feet of materials having a low average vertical
permeability.Groundwater within this system is under artesian pressure in the vicinity of the
site,is ofgenerally good quality,and is used as a secondary source of water at the site.
2.2 Hydrogeologic Setting
The site is located within a region that has a dry to arid continental climate,with average
annual precipitation of less than 11.8 inches,and average annual evapotranspiration of
approximately 61.5 inches.Recharge to aquifers occurs primarily along the mountain fronts (for
example,the Henry,Abajo,and La Sal Mountains),and along the flanks of folds such as Comb
Ridge Monocline.
Although the water quality and productivity of the Navajo/Entrada aquifer are generally
good,the depth of the aquifer (approximately 1,200 feet below land surface [ft bls])makes
access difficult.The Navajo/Entrada aquifer is capable of yielding significant quantities of water
Site Hydrogeology &Est GW Tr~vcl Times
H:\7I 8000\hydrpt09\hydr0809.doc
August 27,2009 4
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to wells (hundreds of gallons per minute [gpm]).Water in wells completed across these units at
the site rises approximately 800 feet above the base of the overlying Summerville Formation.
Perched groundwater in the Dakota Sandstone and Burro Canyon Formation is used on a
limited basis to the north (upgradient)of the site because it is more easily accessible.Water
quality of the Dakota Sandstone and Burro Canyon Formation is generally poor due to high total
dissolved solids (TDS)and is used primarily for stock watering and irrigation.The saturated
thickness of the perched water zone generally increases to the north of the site,increasing the
yield of the perched zone to wells installed north of the site.
2.3 Perched Zone Hydrogeology
Perched groundwater beneath the site occurs primarily within the Burro Canyon
Formation.Perched groundwater at the site has a generally low quality due to high total
dissolved solids (TDS)in the range of approximately 1,200 to 5,000 milligrams per liter (mg/L),
and is used primarily for stock watering and irrigation in the areas upgradient (north)of the site.
Perched water is supported within the Burro Canyon Formation by the underlying,fine-grained
Brushy Basin Member.Figure I is a contour map showing the approximate elevation of the
contact of the Burro Canyon Formation with the Brushy Basin Member,which essentially forms
the base of the perched water zone at the site.Wells and piezometers shown in Figure I consist
of surveyed perched zone monitoring wells and piezometers that include temporary perched zone
monitoring wells (TW4-series wells)associated with an area of elevated perched zone
chloroform concentrations located east and northeast (cross-gradient to upgradient)of the
J Site Hydrogeology &E~1.GW Travel Times
H:\718000\hydrpt09\hydr0809.doc
Allgll~t 27,2009 5
tailings cells.Contact elevations are based on perched monitoring well drilling and geophysical
logs and surveyed land surface elevations.As indicated,the contact generally dips to the
south/southwest beneath the site.
Figures 2 through 5 are perched groundwater elevation contour maps for the years 1990,
1994,2002,and 2009,respectively.Based on the contoured water levels,groundwater within
the perched zone flows generally south to southwest beneath the site.Beneath the tailings cells,
perched groundwater flow is generally southwest to south-southwest.Perched groundwater flow
will be discussed in more detail in Section 2.3.2.
2.3.I Lithologic and Hydraulic Properties
Although the Dakota Sandstone and Burro Canyon Formations are often described as a
single unit due to their similarity,previous investigators at the site have distinguished between
them.The Dakota Sandstone is a relatively-hard to hard,generally fine-to-medium grained
sandstone cemented by kaolinite clays.The Dakota Sandstone locally contains discontinuous
interbeds of siltstone,shale,and conglomeratic materials.Porosity is primarily intergranular.
The underlying Burro Canyon Formation hosts most of the perched groundwater at the site.The
Burro Canyon Formation is similar to the Dakota Sandstone but is generally more poorly sorted,
contains more conglomeratic materials,and becomes argillaceous near its contact with the
underlying Brushy Basin Member.The permeabilities of the Dakota Sandstone and Burro
Canyon Formation at the site are generally low.
Site Hydrogeology &Est.GW Travel Times
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August 27,2009 6
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No significant joints or fractures within the Dakota Sandstone or Burro Canyon
Formation have been documented in any wells or borings installed across the site (Knight
Piesold,1998).Any fractures observed in cores collected from site borings are typically
cemented,showing no open space.
2.3.1.1 Dakota
Based on samples collected during installation of wells MW-16 (no longer used)and
MW-17,located immediately downgradient of the tailings cells at the site,porosities of the
Dakota Sandstone range from 13.4%to 26%,averaging 20%,and water saturations range from
3.7%to 27.2%,averaging 13.5%.The average volumetric water content is approximately 3%.
The permeability of the Dakota Sandstone based on packer tests in borings installed at the site
ranges from 2.71 x 10-6 centimeters per second (cm/s)to 9.12 x 10-4 cm/s,with a geometric
average of 3.89 x 10-5 cm/s.
2.3.1.2 Burro Canyon
The average porosity of the Burro Canyon Formation is similar to that of the Dakota
Sandstone.Based on samples collected from the Burro Canyon Formation at MW-16 (no longer
used),located immediately downgradient of tailings cell #3,porosity ranges from 2%to 29.1 %,
averaging 18.3%,and water saturations of unsaturated materials range from 0.6%to 77.2%,
averaging 23.4%.Titan,1994,reported that the hydraulic conductivity of the Burro Canyon
Formation ranges from 1.9 x 10.7 to 1.6 x 10 -3 cm/s,with a geometric mean of 1.I x 10-5 cm/s,
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Site Hydrogeology &Est.GW Travel Times
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August 27,2009 7
based on the results of 12 pumping/recovery tests performed in monitoring wells and 30 packer
tests performed in borings prior to 1994.
Hydraulic testing of wells MW-OI,MW-03,MW-05, MW-17, MW-18, MW-19,
MW-20,and MW-22 during July,2002,newly installed wells MW-23,MW-25,MW-27,
MW-28,MW-29, MW-30, MW-31,MW-32,TW4-20, TW4-21,and TW4-22 during June,2005,
and newly installed wells TW4-23, TW4-24,and TW4-25 during November,2007 (Figure 5),
yielded average perched zone permeabilities ranging from approximately 2 x 10-7 cm/s to
5 X 10-4 crn/s,similar to the range reported by previous investigators at the site (Hydro Oeo
Chern,Inc [HOC],2002;HOC,2005;HOC,2007).Downgradient (south to southwest)of the
tailings cells,average perched zone permeabilities based on tests at MW-3,MW-5,MW-17,
MW-20,MW-22,and MW-25 ranged from approximately 4 x 10-7 to I X 10-4 cm/s Permeability
estimates from these tests were based on pumping/recovery and slug tests analyzed using several
different methodologies.
25 temporary perched zone monitoring wells (Figure 5)have been installed at the site to
investigate elevated concentrations of chloroform initially discovered at well MW-4 in 1999.
Some of the coarser-grained and conglomeratic zones encountered within the perched zone
during installation of these wells are believed to be partly continuous or at least associated with a
relatively thin,relatively continuous zone of higher permeability (International Uranium [USA]
Corporation [ruSA]and HOC,200 I).The higher permeability zone defined by these wells is
generally located east to northeast of the tailings cells at the site,and is hydraulically
cross-gradient to upgradient of the tailings cells with respect to perched groundwater flow.
!.
Site Hydrogeology &Est.OWTravel Times
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August 27,2009 8
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Based on analyses of pumping tests at MW-4 and drilling logs from nearby temporary
wells,the permeability of this relatively thin coarser-grained zone was estimated to be as high as
2.5 X 10-3 cm/s.Relatively high permeabilities measured at MW-II,located on the southeastern
margin of the downgradient edge of tailings cell #3,and at MW-14,located on the downgradient
edge of tailings cell #4,of 1.4 x 10-3 cmls and 7.5 x 10-4 cm/s,respectively (UMETCO,1993),
may indicate that this zone extends beneath the southeastern margin of the cells.However,this
zone of higher permeability within the perched water zone does not appear to exist downgradient
(south-southwest)of the tailings cells.At depths beneath the perched water table,the zone is not
evident in lithologic logs of temporary wells TW4-4 and TW4-6 (located east [cross-gradient]of
cell #3,as shown in Figure 5),nor is it evident in wells MW-3, MW-5,MW-12,MW-15,
MW-16, MW-17,MW-20,MW-21,or MW-22,located south to southwest (downgradient)of the
tailings cells,based on the lithologic logs or hydraulic testing of the wells.The apparent absence
of the zone south of TW4-4 and south-southwest of the tailings cells indicates that it "pinches
out"(HOC,2005).
Because of the generally low permeability of the perched zone beneath the site,well
yields are typically low (less than 0.5 gpm),although sustainable yields of as much as 4 gpm are
possible in wells intercepting larger saturated thicknesses and higher permeability zones on the
east side of the site (for example,at TW4-l9,shown in Figure 5).Sufficient productivity can
generally be obtained only in areas where the saturated thickness is greater,which is the primary
reason that the perched zone has been used on a limited basis as a water supply to the north
(upgradient)of the site.
Site Hydrogeology &Est.OW Travel Times
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August 27,2009 9
2.3.2 Perched Groundwater Flow
Perched groundwater flow at the site has historically been to the south/southwest.As
presented in Section 2.3,Figures 2 through 5 are perched groundwater elevation contour maps
for the years 1990,1994,2002,and 2009,respectively.The 1990, 1994,and 2002 maps were
hand contoured because of sparse data.As groundwater elevations indicate,the perched
groundwater gradient changes from generally southwesterly in the western portion of the site,to
generally southerly in the eastern portion of the site.The most significant changes between the
2002 and 2009 water levels result from pumping of wells MW-4,TW4-19,TW4-20,and
MW-26.These wells are pumped to reduce chloroform mass in the perched zone east and
northeast of the tailings cells.
In general,perched groundwater elevations have not changed significantly at most of the
site monitoring wells since installation,except in the vicinity of the wildlife ponds and the
pumping wells.For example, relatively large increases in water levels occurred between 1994
and 2002 at MW-4 and MW-19,located in the east and northeast portions of the site,as shown
by comparing Figures 3 and 4.These water level increases in the northeastern and eastern
portions of the site are likely the result of seepage from wildlife ponds located near the
piezometers shown in Figure 4,which were installed in 2001 for the purpose of investigating
these changes.The increase in water levels in the northeastern portion of the site has resulted in
a local steepening of groundwater gradients over portions of the site.Conversely,pumping of
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Site Hydrogeology &Est.GW Travel Times
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August 27,2009 10
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wells MW-4,TW4-19, TW4-20,and MW-26 has depressed the perched water table locally and
reduced average hydraulic gradients to the south and southwest of these wells.
Perched water discharges in springs and seeps along Westwater Creek Canyon and
Cottonwood Canyon to the west-southwest of the site,and along Corral Canyon to the east of the
site,where the Burro Canyon Formation outcrops.The discharge point located most directly
downgradient of the tailings cells is Ruin Spring.This feature is located approximately 10,000
feet south-southwest of the tailings cells at the site and is depicted on the USGS 7.S-minute quad
sheet for Black Mesa (Figure 6).
1.i
Site Hydrogeology &Est.GW Tntvcl Times
H:\718000\hydrpt09\hyd,{)809.doc
August 27,2009 II
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3.PERCHED ZONE HYDROGEOLOGY BENEATH AND DOWNGRADIENT OF
THE TAILINGS CELLS
Perched water as of the Is,Quarter,2009 was encountered at depths of approximately 52
to 115 ft bls in the vicinity of the tailings cells at the site (Figure 7).Beneath tailings cell #3,
depths to water ranged from approximately 70 feet below top of casing (ft btoc)in the eastern
portion of the cell (at MW-31),to approximately 114 ft btoc at the southwest margin of the cell
(at MW-23).Assuming an average depth of the base of tailings cell #3 of 25 feet below grade,
this cOITesponds to perched water depths of approximately 45 to 89 feet below the base of the
cell,and an average depth of approximately 67 feet beneath the base of the cell.
3.1 Saturated Thickness
The saturated thickness of the perched zone as of the 4'h Quarter,2006 ranges from
approximately 93 feet in the northeast portion of the site to approximately 6 feet in the southwest
portion of the site (Figure 8).Beneath tailings cell #3,the saturated thickness varies from
approximately 57 feet in the eastern portion of the cell to approximately 7 feet in the western
portion of the cell.South-southwest of the tailings cells,the saturated thickness ranges from less
than I foot at MW-21 to approximately 28 feet at MW-I7.The average saturated thickness
south-southwest of the tailings cells,based on measurements at MW-3,MW-5,MW-12, MW-14,
MW-15,MWI7,MW-20 and MW-23,is approximately 14 feet.The average saturated thickness
based on measurements at MW-5,MW-15,MW-3,and MW-20,which lay close to a line
between the center of tailings cell #3 and Ruin Spring,is approximately 12 feet.By projecting
Site Hydrogeology &Est.OW Travel Timc&
H:\718000\hydrpt09\hydrOS09.doc
August 27,2009 13
conditions at these wells,the average saturated thickness is estimated to be approximately 10 to
15 feet between MW-20 and Ruin Spring.
3.2 Perched Water Flow
Perched groundwater flow beneath the tailings cells has historically been southwest,with
the gradient steepening since about 1994 and becoming more westerly as perched water levels
near the wildlife ponds in the northeastern portion of the site have risen.Perched water flowing
beneath the tailings cells eventually discharges in springs and seeps located in Westwater
Canyon,to the south-southwest of the cells.The primary discharge point for perched water
flowing beneath the tailings cells is believed to be Ruin Spring,located approximately 10,000
feet south-southwest of the cells.
Perched zone hydraulic gradients currently range from a maximum of approximately 0.05
feet per foot (ftlft)east of tailings cell #2 to approximately 0.01 ftlft downgradient of cell #3,
between cell #3 and MW-20.The average hydraulic gradient between the downgradient edge of
tailings cell #3 and Ruin Spring can be approximated assuming the following:
I.The elevation of Ruin Spring,based on the USGS topographic map for Black Mesa,
is approximately 5,390 ft ams!.
2.The distance between the downgradient edge of tailings cell #3 and Ruin Spring is
approximately 10,000 feet.
3.The average groundwater elevation at the downgradient edge of tailings cell #3 is
approximately 5,511 ft ams!.
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SiLe Hydrogeology &Est.OW Travel Times
H:\7I8000\hydrpt09\hydr0809.doc
August 27,2009 14
Using these assumptions,the average perched zone hydraulic gradient between tailings cell #3
and Ruin Spring is approximately:
5511-5390
10,000 0.012fl /ft
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A hypothetical worst case average perched zone hydraulic gradient can also be estimated
assuming the perched water elevation to be coincident with the base of tailings cell #3.The
elevation of the base of tailings cell #3,which is also the approximate pre-existing land sUlface
elevation near the center of the cell,is approximately 5,580 ft ams!.Under these conditions,for
an unconfined perched zone,the maximum possible average perched zone hydraulic gradient
between tailings cell #3 and Ruin Spring would be approximately:
5580-5390 =0.019ft/ft
10,000 .
3.3 Permeability
The average permeability of the perched zone downgradient of tailings cell #3 can be
approximated based on the pumping/recovery test and slug test data obtained from perched zone
wells located along the downgradient edge of and south of cell #3.Peel conducted hydraulic
tests at perched zone wells MW-II,MW-12, MW-14,and MW-15 in 1992 (UMETCO,1993).
Results of these tests are provided in Table I.HOC conducted slug tests at perched zone wells
MW-3, MW-5,MW-17, MW-20,and MW-22 in July 2002 (HOC,2002),and MW-25 in June,
2005 (HOC,2005).
Site Hydrogeology &Est.GW Travel Times
H:\718000\hydrpt09\llydr0809.doc
August 27,2009 15
The HOC slug test results were analyzed using different solution methods including KOS
(Hyder,1994),and Bouwer-Rice (Bouwer and Rice,1976).Each method yielded slightly
different results as shown in Table 2,which is based on Table I of HOC,2002,and Table 1 of
HOC,2005.A range of average permeabilities for the portion of the site south of the tailings
cells can be obtained by taking the geometric mean of the Peel test results and the results
obtained by the various solution methods used to analyze the HOC data.Averaging the Peel test
results for wells MW-Il,MW-12, MW-14,and MW-15 with the HOC KOS results for wells
MW-3,MW-5,MW-17, MW-20,MW-22,and MW-25 yields a geometric average of 2.3 x 10-5
cm/s,and similarly averaging the Peel test results with the HOC Bouwer-Rice results yields a
geometric average of 4.3 x 10-5 crn/s,as shown in Table 2.The "early time"results at MW-5
using the Bouwer-Rice solution (from Table 1 of HOC,2002)were used in the computations to
yield a conservatively high estimate of permeability.
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Site Hydrogeology &Est.OW Travel Times
H:\718000\hydrpt09\hydr0809.doc
August 27.2009 16
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4.EVALUATION OF POTENTIAL FLOW PATHS AND TRAVEL TIMES FOR
HYPOTHETICAL SEEPAGE ORIGINATING FROM CELL #3
Although more than 25 years of groundwater monitoring at the site has shown no impact
to perched water from the tailings cells,an evaluation of hypothetical transport of a conservative
solute in seepage from cell #3 is presented assuming a flow path from the base of the cell to the
perched water,and thence to Ruin Spring.Average travel times for a conservative constituent
moving from the base of tailings cell #3 to the perched water,and then moving with the perched
water to Ruin Spring,are computed assuming no hydrodynamic dispersion.
The porosities and water saturations used in the calculations were based on measurements
reported in Titan,1994,for samples collected from the Dakota Sandstone during drilling of
MW-16 and MW-17,and from the Burro Canyon Formation during drilling of MW-16 (no
longer used).
4.1 Estimated Travel Time From the Base of Cell #3 to the Perched Zone
Knight-Piesold estimated a maximum volumetric seepage rate for tailings cell #3 based
on cell construction and liner characteristics,of approximately 80 cubic feet per day (ft/day)or
0.42 gpm over the entire cell (Knight-Piesold,1998).Most of this seepage was estimated to be
via diffusion through the liner.This rate was estimated to decrease over time as the cell
desaturates once the final cover is emplaced.Assuming a cell footprint of 3.38 x 106ft2,this rate
is equivalent to 2.37 x 10'5 Cft/day)or 0.0086 ftlyear.
Site Hydrogeology &Est.OW Travel Times
H:\7I8000\hydrpt09\hydr0809.doc
August 27,2009 17
The average rate of downward movement of a conservative solute dissolved in the
seepage,assuming I)no hydrodynamic dispersion,2)an average water saturation of 0.20,3)an
average porosity of 0.18,and assuming that this rate of seepage would not significantly raise the
average saturation of the underlying materials,can be approximated as:
0.008611/yr =0.24 It /r
(.20)(.18).Y
The average time to travel 70 feet to the perched water zone would then be approximately 290
years.This is a conservative estimate because the average water saturations would be likely to
increase,thereby reducing the downward rate of travel,and increasing the travel time.
4.2 Estimated Travel Time From Tailings Cell #3 to Ruin Spring
Under current conditions,the average hydraulic gradient between the downgradient edge
of tailings cell #3 to Ruin Spring is estimated to be 0.012,as discussed in Section 3.2.Assuming
the following:
Average porosity =0.18
Average hydraulic gradient =0.012
Flow path length =10,000 ft
Average permeability range =2.3 x 10'5 to 4.3 X 10'5 cm/s
(0.064 ft/day to 0.120 ft/day)
The average rate of intergranular movement of perched groundwater (interstitial or pore velocity)
can be approximated to range from 0.0043 ft/day to 0.0080 ft/day (or 1.6 feet per year (ft/yr)to
Site Hydrogeology &Est.GW Travel Times
H:\718000\hydrpt09\hydr0809.doc
August 27,2009 18
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2.9 ftlyr).The estimated average travel time for a conservative solute,assuming no
hydrodynamic dispersion,from tailings cell #3 to Ruin Spring would then be approximately
6,250 to 3,450 years over this range of permeabilities.Under conditions of the maximum
possible average perched groundwater gradient of 0.019 ftlft,as estimated in Section 3.2,and
assuming the same permeabilities,porosity,and path length as above,the estimated average
travel times would range from approximately 4,055 to 2,160 years.
4.3 Estimated Total Travel Time from the Base ofTailings Cell #3 to Ruin Spring
The total average travel time for a conservative solute from the base of tailings cell #3 to
Ruin Spring under current conditions would be the sum of I)the travel time from the base of cell
#3 to the perched water table,and 2)the time to travel within the perched zone to Ruin Spring.
Based on the estimates provided in Sections 4.1 and 4.2,the total average travel time of a
conservative solute (assuming no hydrodynamic dispersion)over the range of average
permeability estimates would be between 6,540 and 3,740 years,assuming an average hydraulic
gradient of 0.012 ftlft.
Conditions may hypothetically develop under which travel times may be reduced,such as
an increase in average perched zone groundwater gradients between tailings cell #3 and Ruin
Spring (as discussed in Section 3.2)or as a result of reduced vadose zone travel times due to
development of a relatively large leak in cell #3.Under hypothetical conditions in which a
relatively large leak were to develop in tailings cell #3,potentially reducing vadose zone travel
times to only a few years,the vadose zone travel time could be ignored,and the total average
I
Site Hydrogeology &Est.e;w Travel Times
H:\7I SOOO\hydrpt09\hydr0809.doc
August 27,2009 19
travel time (assuming no hydrodynamic dispersion)would range from approximately 6,250 to
3,450 years,assuming an average hydraulic gradient of 0.012 ft/ft.Under hypothetical
conditions in which the average perched zone hydraulic gradient between tailings cell #3 and
Ruin Spring reached 0.019 ftlft,which also implies a negligible vadose zone travel time,the total
average travel time (assuming no hydrodynamic dispersion)over the estimated range in
permeability would be between approximately 4,055 and 2,160 years.
Estimates based on hypothetical assumptions of a relatively large leak in tailings cell #3
or an average hydraulic gradient as high as 0.019 ftlft between cell #3 and Ruin Spring are
considered very conservative because they assume conditions that are unlikely ever to develop.
Site Hydrogeology &Est.GW Travel Times
H:\718000\hydrpt09\llydr0809.doc
August 27,2009 20
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5.REFERENCES
Bouwer,H.and R.C.Rice.1976.A slug test method for determining hydraulic conductivity of
unconfined aquifers with completely or partially penetrating wells.Water Resources
Research,Vo.12:3.Pp.423-428.
Hyder,Z.,1.1.Butler,C.D.McElwee.and W.Liu.1994.Slug tests in partially penetrating
wells.Water Resources Research.Vol.30:II.Pp.2945-2957.
Hydro Geo Chern.2001.Update to report "Investigation of Elevated Chloroform
Concentrations in Perched Groundwater at the White Mesa Uranium Mill Near Blanding,
Utah".
Hydro Geo Chern.2002.Hydraulic Testing at the White Mesa Uranium Mill Near Blanding,
Utah During July,2002.Submitted to International Uranium (USA)Corporation,
Denver,Colorado.
Hydro Geo Chern.2005.Perched Monitoring Well Installation and Testing at the White Mesa
Uranium Mill,April Through June,2005.Submitted to International Uranium (USA)
Corporation,Denver,Colorado.
Hydro Geo Chern.2007.Draft Letter to Steven Landau,Denison Mines (USA)Corporation,
Denver,Colorado,December 19,2007.
Knight-Piesold.1998.Evaluation of Potential for Tailings Cell Discharge -White Mesa Mill.
Attachment 5,Groundwater Information Report,White Mesa Uranium Mill,Blanding,
Utah.Submitted to UDEQ.
TITAN.1994.Hydrogeological Evaluation of White Mesa Uranium Mill.Submitted to Energy
Fuels Nuclear.
UMETCO.1993.Groundwater Study.White Mesa Facilities.Blanding,Utah.Prepared by
UMETCO Minerals Corporation and Peel Environmental Services.
Site Hydrogeology &Est.GW Travel Times
H:\718000\hydrpt09\hydr0809.doc
August 27,2009 21
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6.LIMITATIONS STATEMENT
The opinions and recommendations presented in this report are based upon the scope of
services and information obtained through the performance of the services,as agreed upon by
HOC and the party for whom this report was originally prepared.Results of any investigations,
tests,or findings presented in this report apply solely to conditions existing at the time HOC's
investigative work was performed and are inherently based on and limited to the available data
and the extent of the investigation activities.No representation,warranty,or guarantee,express
or implied,is intended or given.HOC makes no representation as to the accuracy or
completeness of any information provided by other parties not under contract to HOC to the
extent that HOC relied upon that information.This report is expressly for the sole and exclusive
use of the party for whom this report was originally prepared and for the particular purpose that
it was intended.Reuse of this report,or any portion thereof,for other than its intended purpose,
or if modified,or if used by third parties,shall be at the sole risk of the user.
Site Hydrogeology &Est.GW Travel Times
H:\718000\hydrpt09\hydI'0809.doc
August 27,2009 23
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TABLES
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TABLE 1
Peel Hydraulic Test Results1
Well Hydraulic Conductivity
(cm/s)
MW-11 1.4 x 10'3
MW-12 2.2 x 10'5
MW-14 7.5 x 10'4
MW-15 1.9 x 10'5
Notes:
cm/s ~centimeters persecond
1 From UMETCO,1993
H:1718000Ihydrpt09ITables,xls:Table 1 8/25/2009
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51
APPENDIX C
STORMWATER BEST MANAGEMENT PRACTICES PLAN
JUNE 2008
,"~-I
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-;
STORMWATER
BEST MANGEMENT PRACTICES PLAN
for
White Mesa Uranium Mill
6425 South Highway 191
P.O.Box 809
Blanding,Utah
June 2008
Prepared by:
Denison Mines (USA)Corp.
1050 1i h Street,Suite 950
Denver,CO 80265
!...
!
,>.'-'j..
TABLE OF CONTENTS
1.0 Purpose
2.0 Scope
3.0 Responsibility
4.0 Best Management Practices
4.1 General Management Practices Applicable to All Areas
4.2 Management Practices for Process and Laboratory Areas
4.3 Management Practices for Maintenance Activities
4.4 Management Practices for Ore Pad,Tailings Area,and heavy Equipment
Operations
Figures
[1
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Figure 1
Figure 2
Figure 3
Figure 4
Tables
Table 1
Appendices
Appendix 1
Appendix 2
White Mesa Mill Site Map
Mill Site Drainage Basins
roSA Mill Management Organization Chart
roSA Corporate Management Organization Chart
White Mesa Mill Management Personnel Responsible for Implementing
ThisBMPP
White Mesa Mill Spill Prevention,Control,and Countermeasures Plan
White Mesa Mill Emergency Response Plan
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Best Management Practices Plan
Revision 1.3:June 12,2008
1.0 INTRODUCTION/PURPOSE
Denison Mines (USA)Corp.("DUSA")operates the White Mesa Uranium Mill ("the Mill)in
Blanding,Utah.The Mill is a net water consumer,and is a zero-discharge facility with respect to
water effluents.That is,no water leaves the Mill site because the Mill has:
CD no outfalls to public stormwater systems,
CD no surface runoffto public stormwater systems,
II no discharges to publicly owned treatment works ("POTWs"),and
CD no discharges to surface water bodies.
The State ofUtah issued Groundwater Discharge Permit No.UGW370004 to DUSA on March 8,
2005.As a part of compliance with the Permit,DUSA is required to submit a Stormwater Best
Management Practices Plan ("BMPP")to the Executive Secretary ofthe Division ofRadiation
Control,Utah Department ofEnvironmental Quality.This BMPP presents operational and
management practices to minimize or prevent spills ofchemicals or hazardous materials,which
could result in contaminated surface water effluents potentially impacting surface waters or
ground waters through runoff or discharge connections to stormwater or surface water drainage
routes.Although the Mill,by design,cannot directly impact stormwater,surface water,or
groundwater,the Mill implements these practices in a good faith effort to minimize all sources of
pollution at the site.
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Best Management Practices Plan
Revision 1.3:June 12,2008
2.0 SCOPE
This BMPP identifies practices to prevent spills of chemicals and hazardous materials used in
process operations,laboratory operations,and maintenance activities,and minimize spread of
particulates from stockpiles and tailings management areas at the Mill.Storage ofores and
alternate feeds on the ore pad,and containment oftailings in the Mill tailings impoundment
system are not considered "spills"for the purposes ofthis BMPP.
The Mill site was constructed with an overall grade and diversion ditch system designed to
channel all surface runoff,including precipitation equivalent to a Probable Maximum
Precipitation/Probable Maximum Flood ("PMP/PMF")storm event,to the tailings management
system.In addition,Mill tailings,all other process effluents,all solid waste and debris (except
used oil and recyclable materials),and spilled materials that cannot be recovered for reuse are
transferred to one or more ofthe tailings cells in accordance with the Mill's NRC license
conditions.All ofthe process and laboratory building sinks,sumps,and floor drains are tied to
the transfer lines to the tailings impoundments.A site map ofthe Mill is provided in Figure 1.A
sketch ofthe site drainage basins is provided in Figure 2.
Section 4.0 itemizes the practices in place at the Mill to meet these objectives.
As a result,unlike other industrial facilities,whose spill management programs focus on
minimizing the introduction ofchemical and solid waste and wastewater into the process sewers
and storm drains,the Mill is permitted by NRC license to manage some spills via draining or
washdown to the process sewers,and ultimately the tailings system.However,as good
environmental management practice,the Mill attempts to minimize:
Requirements and methods for management,recordkeeping,and documentation ofhazardous
material spills are addressed in the DUSA White Mesa Mill Spill Prevention,Control and
Countermeasures ("SPCC")Plan Revised February,2007,the Emergency Response Plan
("ERP"),also revised in February,2007,and the housekeeping procedures incorporated in the
White Mesa Mill Standard Operating Procedures ("SOPs").The SPCC plan and the ERP are
provided in their entirety in Appendices I and 2,respectively.
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the number and size ofmaterial spills,and
the amount ofunrecovered spilled material and washwater that enters the process sewers
after a spill cleanup.
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Best Management Practices Plan
Revision 1.3:June 12,2008
3.0 RESPONSIBILITY
All Mill personnel are responsible for implementation ofthe practices in this BMPP.DUSA
White Mesa Mill management is responsible for providing the facilities or equipment necessary
to implement the practices in this BMPP.
The Mill Management Organization is presented in Figure 3.The DUSA Corporate
Management Organization is presented in Figure 4.
An updated spill prevention and control notification list is provided in Table 1.
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Best Management Practices Plan
Revision 1.3:June 12,2008
4.0 BEST MANAGEMENT PRACTICES
A summary list and inventory ofall liquid and solid materials managed at the Mill is provided in
Tables 2 through 5.
4.1 General Management Practices Applicable to All Areas
4.1.1 Keep Potential Pollutants from Contact with Soil,and Surface Water:
•Store hazardous materials and other potential pollutants in appropriate containers.
•Label the containers.
•Keep the containers covered when not in use.
4.1.2 Keep Potential Pollutants from Contact with Precipitation
•
•
•
•
Store bulk materials in covered tanks or drums.
Store jars,bottle,or similar small containers in buildings or under covered areas.
Replace or repair broken dumpsters and bins.
Keep dumpster lids and large container covers closed when not in use (to keep
precipitation out).
4.1.3 Keep Paved Areas from Becoming Pollutant Sources
•Sweep paved areas regularly,and dispose ofdebris in the solid waste dumpsters or
tailings area as appropriate.
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4.1.4 Inspection and Maintenance of Diversion Ditches and Drainage Channels within the
Process and Reagent Storage Area
•Diversion ditches,drainage channels and surface water control structures in and around
the Mill area will be inspected at least weekly in accordance with the regularly scheduled
inspections required by Groundwater Discharge Permit No.UGW370004,and
Byproduct Materials License #UT1900479.Areas requiring maintenance or repair,such
as excessive vegetative growth,channel erosion or pooling ofsurface water runoff,will
be report to site management and maintenance departments for necessary action to repair
damage or perform reconstruction in order for the control feature to perform as intended.
Status ofmaintenance or repairs will be documented during follow up inspections and
additional action taken ifnecessary.
4.1.5 Recycle Fluids Whenever Possible:
•When possible,select automotive fluids,solvents,and cleaners that can be recycled or
reclaimed.
•When possible, select consumable materials from suppliers who will reclaim empty
containers.
•Keep spent fluids in properly labeled,covered containers until they are picked up for
recycle or transferred to the tailings area for disposal.
Page 4
4.2 Management Practices for Process and Laboratory Areas
Best Management Practices Plan
Revision 1.3:June 12,2008
4.2.1 Clean Up Spills Properly
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Clean up spills with dry cleanup methods (absorbents,sweeping,collection drums)
instead ofwater whenever possible.
Clean spills ofstored reagents or other chemicals immediately after discovery.
(Groundwater Discharge Permit No.UGW370004,Section I.D.8.c.)
Recover and re-use spilled material whenever possible.
Keep supplies ofrags,sorbent materials (such as cat litter),spill collection drums,and
personnel protective equipment ("PPE")near the areas where they may be needed for
spill response.
Ifspills must be washed down,use the minimum amount ofwater needed for effective
cleanup.
:1 4.2.2 Protect Materials Stored Outdoors
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Ifdrummed feeds or products must be stored outdoors,store them in covered or diked
areas when possible.
Ifdrummed chemicals must be stored outdoors,store them in covered or diked areas
when possible.
Make sure drums and containers stored outdoors are in good condition and secured
against wind or leakage.Place any damaged containers into an overpack drum or second
container.
4.2.3 Water Management
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•
•
When possible,recycle and reuse water from flushing and pressure testing equipment.
When possible,wipe down the outsides ofcontainers instead ofrinsing them offin the
sink.
When possible,wipe down counters and work surfaces instead ofhosing or rinsing them
offto sinks and drains.
4.2.4 Materials Management
•
•
•
Purchase and inventory the smallest amount oflaboratory reagent necessary.
Do not stock more ofa reagent than will be used up before its expiration date.
All new construction ofreagent storage facilities will include secondary containment
which shall control and prevent any contact ofspilled reagents,or otherwise released
reagent or product,with the ground surface.(Groundwater Discharge Permit No.
UGW370004,Section I.D.3.e.)
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Best Management Practices Plan
Revision 1.3:June 12,2008
4.3 Management Practices for Maintenance Activities
4.3.1 Keep a Clean Dry Shop
4.3.2 Manage Vehicle Fluids
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Sweep or vacuum shop floors regularly.
Designate specific areas indoors for parts cleaning,and use cleaners and solvents only in
those areas.
Clean up spills promptly.Don't let minor spills spread.
Keep supplies ofrags,collection containers,and sorbent material near each work area
where they are needed.
Store bulk fluids,waste fluids,and batteries in an area with secondary containment
(double drum,drip pan)to capture leakage and contain spills.
Drain fluids from leaking or wrecked/damaged vehicles and equipment as soon as
possible.Use drip pans or plastic tarps to prevent spillage and spread offluids.
Promptly contain and transfer drained fluids to appropriate storage area for reuse,recycle,
or disposal.
Recycle automotive fluids,ifpossible,when their useful life is finished.
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4.3.3 Use Controls During Paint Removal
Use drop cloths and sheeting to prevent windbome contamination from paint chips and
sandblasting dust.
Collect,contain,and transfer,as soon as possible,accumulated dusts and paint chips to a
disposal location in the tailings area authorized to accept waste materials from
maintenance or construction activities.
4.3.4 Use Controls During Paint Application and Cleanup
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•
•
•
•
Mix and use the right amount ofpaint for the job.Use up one container before opening a
second one.
Recycle or reuse leftover paint whenever possible.
Never clean brushes or rinse or drain paint containers on the ground (paved or unpaved).
Clean brushes and containers only at sinks and stations that drain to the process sewer to
the tailings system.
Paint out brushes to the extent possible before water wasmng (water-based paint)or
solvent rinsing (oil-based paint).
Filter and reuse thinners and solvent whenever possible).Contain solids and unusable
excess liquids for transfer to the tailings area.
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Best Management Practices Plan
Revision 1.3:June 12,2008
4.4 Management Practices for Ore Pad,Tailings Area,and Heavy Equipment
Detailed instructions for ore unloading,dust suppression,and tailings management are provided
in the Mill SOPs.
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4.4.1 Wash Down Vehicles and Equipment in Proper Areas
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Wash down trucks,trailers,and other heavy equipment only in areas designated for this r-":•
purpose (such as washdown pad areas and the truck wash station).
.,At the truck wash station,make sure the water collection and recycling system is working.:;•
before turning on water sprays.
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4.4.2 Manage Stockpiles to Prevent Windborne Contamination /";'"
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Water spray the ore pad and unpaved areas at appropriate frequency in accordance with ;;~•Ii;"
Mill SOPs.\.~~~
:'"1 •Water spray stockpiles as required by opacity standards or weather conditions.
i J:i •Don't over-water.Keep surfaces moist but minimize runoff water.L~.)
4.4.3 Keep Earthmoving Activities from Becoming Pollutant Sources
•Schedule excavation,grading,and other earthmoving activities when extreme dryness and
,1
high winds will not be a factor (to prevent the need for excessive dust suppression).
•Remove existing vegetation only when absolutely necessary.
•Seed or plant temporary vegetation for erosion control on slopes.i],.
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TABLES
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Personnel
Table 1
White Mesa Mill Management Personnel
Responsible for Implementing This BMPP
Mill Staff
Work Phone Home Phone/
Other Contact Number
Rich E.Bartlett Interim Mill Manager 435-678-2221 435 678-2495
I Ext.105 I
Wade Hancock Maintenance Foreman 435-678-2221 435 678-2753
Ext.166 ··'f'::";
'j Scot Christensen Mill Foreman 435-678-222]435678-2015
David E.Turk Radiation Safety Officer 435-678-2221 435 678-7802
Ext.113
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Personnel Title Work Phone HomePhonel
Other Contact
Number
Ron F.Hochstein President!Chief Operating 604 806-3589 Cell:604377-1167
,-f.h~~Officer tl~:'
David C.Frydenlund Vice President and 303 389-4130 303221-0098
General Counsel Cell:303 808-6648
TABLE 2
REAGENT YARD LIST
•1 ADOGEN 2382 6)20
!~:-ul ADVANTAGE 101M 2,475 ~:~
AMERSITE 2 °%
AMINE 2384 19,440
AMMONIUM SULFATE (BULK)54,000
AMMONIUM SULFATE (BAGS)4,300
ANHYDROUS AMMONIA 107,920 2 31,409
CHEMFAC 100 12,800 ;:,'-;;:~:
CLARIFLOC N-101P 3,000 ;~~:
;,J DECYLALCOHOL 45,430 :i~{
t'DIESEL FUEL 2 250 ~k
1 6,000
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I FLOCCULENT MI01lN 30,550
,i FLOCCULENT M1302C 3,550
GRINDING BALLS 48,290
:"1 ISODECANOL 45A30.\KEROSENE 1,344 3 10,152:i MACKANATE 3,150
MILLSPERSE 802 1,410
NALCO 2458 0
NALCO 8815 °
:i PERCOL 351 1,500
'.l PERCOL406 13,950t.l PERCOL 745 0
~'1 POLOX 10,360
;POLYHALL YCF 0
I l:~:;'__1 PROPANE 1 30,000 ;:",'
SALT (BAGS)39,280 ~\~
.I SALT (BULK)0
SODA ASH (BAGS)39,280 (~;~
SODA ASH (BULK)84,100 1 16,921
1 8,530
SODIUM CHLORATE 101,128 1 17,700
1 10,500
SODIUM HYDROXIDE 0 1 19,904 B:~~SULFURIC ACID 4,801,440 1 1,600,000 ~~?
2 269,160
UNLEADED GASOUNE 1 3,000
USED OIL 1 5,000
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TABLE 3.0
LABORATORY CHEMICAL INVENTORY UST1
Chemical in lab RQ":Quantity InStock
....
Aluminum nitrate 2,270 kg 1.8 kg
Ammonium bifluoride 45.4 kg 2.27 kg
Ammonium chloride 2,270 kg 2.27 kg
Ammonium oxalate 2,270 kg 6.8 kg
Ammonium thiocyanate 2,270 kg 7.8 kg
Antimony potassium tartrate 45.4 kg 0.454 kg
n-Butyl acetate 2,270 kg 4L
Carbon tetrachloride 4.54 kg 1.0 L
Cyclohexane 454 kg 24 L
Ferric chloride 454 kg 6.810 kg
Ferrous ammonium sulfate 454 kg 0,57 kg
Potassium chromate 4.54 kg 0.114kg
Sodium nitrite 45.4 kg 2.5 kg
Sodium phosphate tribasic 2,270 kg 1.4 kg
Zinc acetate 454 kg 0.91 kg
Chemical inVolatiles and RQz Quantity InStock
Flammables Lockers (A,B,C)
Chloroform 4.54 kq 8L
Formaldehyde 45.4 kg <1 L of 37%solution
Nitrobenzene 454 kq 12 L
Toluene 454 kq 12 L
Chemical in Acid Shed RQ2 Quantity:In Stock
Chloroform 4.54 kQ 55 gal
Hvdrochloric acid 2,270 kQ 58 Qal
Nitric acid 454 kg 5L
Phosphoric acid 2,270 kQ 10 L
Sulfuric acid 454 kQ 25 L
Hydrofluoric Acid 45.4 kq 1 L
Ammonium hydroxide 454 kg 18 L
1.This list identifies chemicals which are regulated as hazardous substances under the
Federal Water Pollution Control Act 40 CFR Part 117.The lab also stores small
quantities of other materials that are not hazardous substances per the above regulation.
2.Reportable Quantities are those identified in 40 CFR Part 117 Table 117.3:"Reportable
Quantities of Hazardous Substances Designated Pursuant to Section 311 ofthe Clean
Water Act."
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TABLE 4.0
REAGENT YARD/SMAll QUANTITY CHEMICALS LIST 1
1.This list identifies chemicals which are regulated as hazardous substances
under the Federal Water Pollution Control Ac140 CFR Part 117.Materials
in this list are stored in a locked storage compound near the bulk storage
tank area.The Mill also stores small quantities of other materials that are
not hazardous substances per the above regulation..
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Acetic Acid,Glacial 1,OOOlbs
Ammonium H droxide 1,OOOlbs
Carbon Disulfide 100lbs
Calcium H ochlorite 10lbs t",,~:.<:
Chlorine 10lbs
Ferrous Sulfate He tah drate 1,OOOlbs ,'.";
Hydrochloric Acid 5,OOOIbs ~;y
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II Nitric Acid 1,OOOlbs:1 Potassium Permanganate 0.1 N 32 gal
:~Sodium Hypochlorite 5.5%100lbs
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Silver Nitrate 11b
Trichloroethylene 100lb
X lene Mixed Isomers 100lbs
2.Reportable Quantities are those identified in 40 CFR Part 117 Table
117.3:"Reportable Quantities of Hazardous Substances Designated
Pursuant to Section 311 of the Clean Water Act."
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TABLE 5.0
REAGENT YARD/BULK CHEMICALS UST1
REAGENT RQ2 QUANTITY IN
REAGENT YARD
Sulfuric Acid 1,0001bs 9,000,000 Ibs
Floc #301 None 1,2001bs
Hypetiloc 102 None 1,5001bs
Ammonia -East Tank 100lbs Olbs
Ammonia -West Tank 100lbs 105,0001bs
Kerosene 100 gal 500 gal
Salt (Bags)None 2,0001bs
Ammonium Hydrogendifluoride None 20,4501bs
Soda Ash Dense (Bag)None Olbs
Phosphoric Acid 5,0001bs 6,3001bs
Polyox None 490lbs
Millsperse None 1,4101bs
Nalco TX760 None 9 barrels
Nalco 7200 None 1,5901bs
Tributyl phosphate None 9,4501bs
Distillates None 100 gal
Diesel 100 gal Approx.3300 gal
Gasoline 100 gal Approx.6000 gal
Alamine 336 drums None Orbs
Floc 109 None Olbs
Floc 208 None Orbs
Floc 904 None Olbs
Hypetiloc 624 None Olbs
Salt (Bulk solids)None Olbs
Salt (Bulk solutions)None Olbs
Caustic Soda 1,0001bs Olbs
Ammonium Sulfate
,
None Olbs
Sodium Chlorate None 20,0001bs
Alamine 335 Bulk None Olbs
Alamine 310 Bulk None Olbs
Isodecanol None Olbs
Vanadium Pentoxide3 1000lbs 30,0001bs
Yellowcake3 None <100,000 Ibs
Ammonia Meta Vanadate 1000lbs Olbs
1.This list identifies all chemicals in the reagent yard whether or not they are regulated as hazardous
substances under the Federal Water Pollution Control Act 40 CFR Part 117.
2.Reportable Quantities are those identified in 40 CFR Part 117 Table 117.3:"Reportable Quantities
ofHazardous Substances Designated Pursuant to Section 311 ofthe Clean Water Act."
3.Vanadium Pentoxide and Yellowcake,the Mill's products,are not stored in the Reagent Yard itself,
but are present in closed containers in the Mill Building andfor Mill Yard.
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TABLE 6.0
PETROLEUM PRODUCTS AND SOLVENTS lIST1
PRODUCT RQ QUANTITY IN
.WAREHOUSE
Lubricating Oils in 55 gallon drums 100 gal 1,540 gallons
Transmission Oils 100 gal ogallons
Water Soluble Oils 100 gal 30 gallons
Xylene (mixed isomers)100Ibs ogallons
Toluene 1000lbs ogallons
Varsol Solvent 100 gal ogallons
(2%trimethyl benzene in petroleum distillates)
1.This list includes all solvents and petroleum-based products in the Mill
warehouse petroleum and chemical storage aisles.
2.Reportable Quantities are those identified in 40 CFR Part 117 Table
117.3:"Reportable Quantities of Hazardous Substances Designated
Pursuant to Section 311 ofthe Clean Water Act."
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Figure 1
White Mesa Mill
Mill Site Layout
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Figure 3
White Mesa Mill
Mill Management Organization Chart
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International Uranium (USA)Corporation
White Mesa Mill
Organizational Structure
Payroll I Administration
ChiefChemistSafety
Environmental
Tech
Radiation Tech
President &CEO
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Radiation Safety Officer I !I ,
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Mill Superintendent
Figure 3
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Figure 4
Corporate Management Organization Chart
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International Uranium (USA)Corporation
Organizational Structure
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(President &'CEO
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VP &General Counsel VP Corporate Development VP &Chief Financial Officer )Director Project Development [Administration Manager
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Controller
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,TechnIcal Manager
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Figure 4.
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APPENDICES
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APPENDIX 1
WHITE MESA MILL
SPILL PREVENTION,CONTROL,AND COUNTERMEASURES
PLAN
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SPILL PREVENTION,CONTROL,AND COUNTERMEASURES
PLAN
FOR CHEMICALS AND PETROLEUM PRODUCTS
for
White Mesa Uranium Mill
6425 South Highway 191
P.O.Box 809
Blanding,Utah 84511
February 2007
Prepared by:,
Denison Mines (USA)Corp.
1050 1i h Street,Suite 950
Denver,Colorado 80265
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TABLE OF CONTENTS
SECTION
1.1 Objective
1.2 Responsibilities
1.3 Drainage Basins,Pathways,and Diversions
1.4 Description of Basins
1.4.1 Basin Ai
1.4.2 Basin A2
1.4.3 Basin B1
1.4.4 Basin B2
1.4.5 Basin B3
1.4.6 Basin C
1.4.7 Basin D
1.4.8 Basin E
1.5 Potential Chemical Spill Sources And Spill Containment
1.5.1 Reagent Tanks
1.5.2 Ammonia
1.5.3 Ammonium Meta Vanadate
1.5.4 Caustic Storage (Sodium Hydroxide)
1.5.5 Sodium Carbonate
1.5.6 Sodium Chlorate
1.5.7 Sulfuric Acid
1.5.8 Vanadium Pentoxide
1.5.9 Kerosene (Organic)
1.6.0 Used/Waste Oil
2
3
3
3
3
3
3
4
4
4
4
5
5
5
5
5
5
6
6
6
6
7
SECTION PAGE
1.6.1 Propane 7 ;'/.
1.7 Potential Petroleum Sources And Containment 7
1.7.1.Petroleum Storage Tanks 7
1.7.1.1.Diesel 7
1.7.2 Aboveground Fuel Pump Tanks 8 ~''-:
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1.7.2.2 Unleaded Gasoline 8
1.7.2.3 Pump Station 8
,~."i 1.7.2.4 Truck Unloading 8
'j 1.8 Spill Discovery And Remedial Action 8 t:2<_~
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1.9 Spill Incident Notifications 9
i~I 1.9.1 External Notification 9t.l
r-j 1.9.2 Internal Notification 11
Ll
1.10 Records And Reports 12
,1.11 Personnel Training And Spill Prevention Procedures 12
.-,1.11.1 Training Records 12I!
:J 1.11.2 Monitoring Reports 13
:1 1.12 Revision 13,.1
1.13 Summary 13 ~i~:
1.14 Mill Manager Approval 14
1.15 Certification by Registered Professional Engineer 14
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Table 1.0
Table 2.0
Table 3.0
'rable 4.0
Table 5.0
Table 6.0
Figure 1
Figure 2
LIST OF TABLES
Mill Organization Chart
Reagent Tank List
Laboratory Chemical Inventory List
Reagent Yard/Small Quantity Chemicals List
Reagent Yard/Bulk Chemicals List
Petroleum Products and Solvents List
LIST OF FIGURES
Mill Site Layout
Mill Site Drainage Basins
WHITE MESA MILL
SPILL PREVENTION,CONTROL,AND COUNTERMEASURES
PLAN FOR CHEMICALS AND PETROLEUM PRODUCTS
1.1 OBJECTIVE:
The objective of the Spill Prevention,Control,and Countermeasures (SPCC)
Plan is to serve as a site-specific guideline for the prevention ofand response to
chemical and petroleum spills,and as a guidance document for compliance with
Groundwater Discharge Permit No.UGW370004.The plan outlines spill
potentials,containment areas,and drainage characteristics of the White Mesa
Mill site.The plan addresses chemical spill prevention,spill potentials,spill
discovery,and spill notification procedures.The Oil Pollution Prevention Sections
of the Clean Water Act (40 CFR 112 to 117),also referred to as the Spill
Prevention,Control,and Countermeasures ("SPCC")rules,establish
requirements that apply to facilities which could reasonably be expected to
discharge oil in quantities that may be harmful,as described in that Act,into or
upon the navigable waters of the United States or that may affect natural
resources of the United States.Section 112 states that the Act is not applicable
to facilities that are not subject to the authority of the U.S.Environmental
Protection Agency ("EPA")for one of the following reasons:
1.Due to its location,the facility could not reasonably be expected to
discharge oil into navigable waters of,or impact natural resources of,the
U.S.or
2.The facility is subject to authority of the Department of Transportation as
defined in a Memorandum of Understanding ("MOU")between the
Secretary of Transportation and the EPA Administrator,or
3.The facility does not exceed either the underground or the above ground
storage capacity (42,000 gallons and 1,320 gallons,respectively)
prescribed in the rules.
The Mill could not reasonably be expected,as described in the SPCC regulation,
to discharge oil into the navigable waters,or impact natural resources,of the
U.S.The Mill site was constructed with an overall grade and diversion ditch
system designed to channel the non-recovered portion of any material spill to the
tailings management system.Hence,it is not reasonable to expect that surface
spills will ever reach navigable waters or natural resources of the U.S.or Utah.
Therefore,the SPCC reporting requirements in the Clean Water Act are not
applicable to the Mill.However,as good environmental management practice,
the Mill has implemented the spill management program,described in this
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document,which is consistent with the intent of the Clean Water Act to the
extent practicable.Although the Mill,by design,cannot directly impact navigable
waters of the U.S.,and as a result,spills that may occur but are retained within
the site would not be "reportable",the Mill implements these practices in a good
faith effort to minimize all potential sources of pollution at the site.
Storage of ores and alternate feeds on the are pad,and containment of tailings
in the Mill tailings impoundment system are not considered "spills"for the
purposes of this SPCC.
Ammonia is the only chemical that has the potential to leave the site,and would
do so as a vapor.
Figure 1,Site Layout Map shows a map of the mill site including the locations of
the chemical tanks on-site.Figure 2 shows the basins and drainage ditch areas
for the mill site.Table 1.0 is an organization chart for Mill operations.Table 2.0
lists the reagent tanks and their respective capacities.Table 3.0 lists the
laboratory chemicals,their amounts,and their reportable quantities.Table 4.0
lists the operations chemicals.Table 5.0 lists the chemicals in the reagent yard,
their amounts,and their reportable quantities.Table 6.0 lists the petroleum
products and solvents on site.
1.2 RESPONSIBILITIES:
Person in charge of facility responsible for spill prevention:
Mr.Richard E.Bartlett,Interim Mill Manager
6425 South Highway 191
Blanding,UT 84511
[phone] (work)
[phone] (home)
Person in charge of follow-up spill record keeping and/or reporting:
Mr.David E.Turk,Department Head,Health,Safety,and Environmental
6425 South Highway 191
Blanding,UT 84511
[phone] (work)
[phone] (home)
Refer to Section 1.9 Spill Incident Notification for a list of company personnel
to be notified in case of a spill.In addition,an organizational chart is provided
in Table 1.0.
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1.3 DRAINAGE BASINS,PATHWAYS,AND DIVERSIONS:
i The main drainage pathways are illustrated in Figure 2.The map shows
drainage basin boundaries,flow paths,constructed diversion ditches,tailings
cells,the spillway between Cell 2 and 3,dikes,berms,and other relevant
features.The White Mesa Mill is a "zero"discharge facility for process liquid
wastes.The mill area has been designed to ensure that all spills or leaks I:'
from tanks will drain toward the lined tailings cells.f~~",~
The tailings cells,in turn,are operated with sufficient freeboard (minimum of
three feet)to withstand 100%of the PMP (Probable Maximum Precipitation).
This allows for a maximum of 10 inches of rain at any given time.
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1.4 DESCRIPTION OF BASINS:...~~
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Precipitation and unexpected spills on the mill property are contained within L::..-~1;their respective drainage basins.Runoff would ultimately drain into one of !":,
I the three (3)lined tailings cells.
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1.4.1 Basin A1
Basin Ai is north of Cell 1-1 and Diversion Ditch No.1.The basin
contains 23 acres,all of which drain into Westwater Creek.This area is
not affected by mill operations.
1.4.2 Basin A2
f 'j Basin A2 contains all of Cell 1-1 including an area south of the Diversion
Ditch NO.1.The basin covers 84 acres.Any runoff from this basin
:-'1 would be contained within Cell 1-1.
,J Basin B11.4.3
Basin B1 is north of the mill property and is not affected by mill
operations.The basin contains 45.4 tributary acres.Runoff from this ~:"
basin drains into a flood retention area by flowing through Diversion Ditch
No.2.Diversion Ditch No.2 drains into Westwater Creek.
1.4.4 Basin B2
Basin B2 is northeast of the mill and contains only 2.6 acres.Runoff from t.:~;"
this basin would drain into Diversion Ditch NO.3.Diversion Ditch No.3 ~r~
ultimately drains into Diversion Ditch NO.2.This basin is not affected by ;~"
mill operations.
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1.4.5
1.4.6
Basin 83
Basin B3 contains most of the mill area,buildings,ore stockpiles,process
storage tanks,retention ponds,spill containment structures,pipelines,
and roadways.The normal direction of flow in this basin is from the
northwest to the southwest.Any runoff from this basin would drain into
Cell 1-1.The basin contains 64 acres.This basin has sufficient
freeboard to withstand 100%of the PMP (Probable Maximum
Precipitation).This allows 10 inches of rain for any given storm event.
Basin C
Basin C contains all of Cell 2.The basin consists of 80.7 acres.This
basin contains earth stockpiles and the heavy equipment shop.The
direction offlow in this basin is to the southwest.All runoff in this basin
would be channeled along the southern edge of the basin.Runoff would
then flow into Cell 3 via the spillway from Cell 2 to Cell 3.
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1.4.7 Basin D
Basin 0 contains all of Cell 3.This basin consists of 78.3 acres including
a portion of the slopes of the topsoil stockpile and random stockpile.The
basin contains all flows,including those caused by the PMF.
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1.4.8 Basin E
Basin E contains Cell 4A and consists of 43.3 acres.All anticipated flows
including those caused by the PMF will be contained within the basin and
will flow directly into Ce1l4A.
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1.5 POTENTIAL CHEMICAL SPILL SOURCES AND SPILL
CONTAINMENT
This section details potential sources of chemical spills and "reportable quantities".For
purposes of this SPCC,a "reportable quantity"will be defined as quantities listed below
which could be expected to reach navigable waters of the United States.Reportable
Quantities are those identified in 40 CFR Part 117 Table 117.3:"Reportable Quantities
of HazardOUS Substances Designated Pursuant to Section 311 of the Clean Water Act."
It is not expected that any spill would reach navigable waters of the United States.
However,if a spill of a volume listed below occurs,and remains on the mill site,which is
the more likely scenario,then management is to be notified so that proper internal
evaluations of the spill are made.
1.5.1 Reagent Tanks (Tank list included in Table 2.0 )
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1.5.2 Ammonia
The ammonia storage tanks consist of two tanks with a capacity of
31,409 gallons each.The tanks are located southeast of the Mill building.
Daily monitoring of the tanks for leaks and routine integrity inspections will be
conducted to minimize the hazard associated with ammonia.The reportable
quantity for an ammonia spill is 7 gallons.
Ammonia spills should be treated as gaseous.Ammonia vapors will be
monitored closely to minimize the hazard associated with inhalation.If
vapors are detected,efforts will be made to stop or repair the leak
expeditiously.Ammonia is the only chemical (as vapor)that has the
potential to leave the site.
1.5.3 Ammonia Meta Vanadate
Ammonia meta vanadate is present in the SX building as the process
solutions move through the circuit to produce the vanadium end product.
But,the primary focus will be on the transportation of this chemical.The
reportable quantity for an ammonia meta vanadate spill is 1,000 pounds.
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1.5.4 Caustic Storage (Sodium Hydroxide)
The caustic storage tank is located on a splash pad on the northwest corner
of the SX building.The tank has a capacity of 19,904 gallons.The tank
supports are mounted on a concrete curbed catchment pad that directs spills
into the sand filter sump in the northwest corner of the SX building.The
reportable quantity for a sodium hydroxide spill is 85 gallons.
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1.5.5 Sodium Carbonate (Soda Ash)
The soda ash solution tank has a capacity of 16,921 gallons and is located in
the northeast corner of the SX building.The smaller soda ash shift tank has
a capacity of 8,530 gallons and is located in the SX building.Spills will be
diverted into the boiler area,and would ultimately drain into Cell 1-1.There is
no reportable quantity associated with a sodium carbonate spill.,.,.;
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1.5.6 Sodium Chlorate
Sodium chlorate tanks consist of two fiberglass tanks located within a dike
east of the SX building.The larger tank is used for dilution purposes and has
a maximum capacity of 17,700 gallons.The smaller tank serves as a
storage tank and has a capacity of 10,500 gallons.Daily monitoring of the
tanks for leaks and integrity inspections will be conducted to minimize the
hazard associated with sodium chlorate.
Sodium chlorate that has dried and solidified becomes even more of a safety h.;'....../.
hazard due to its extremely flammable nature.The reportable quantity for a l·..
.i sodium chlorate spill is 400 gallons.i .1LJ
1.5.7 Sulfuric Acid
The sulfuric acid storage tanks consist of one large tank with the capacity of
1,6000,000 gallons and two smaller tanks with capacities of 269,160 gallons
each.
,The large tank is located in the northwest corner of mill area basin 83 and is
primarily used for acid storage and unloading.The tank support for the large,l tank is on a mound above a depression which would contain a significant
I spill.All flows resulting would be channeled to Cell 1-1.The tank is equipped ,.
with a high level audible alarm which sounds prior to tank overflows.A
. I concrete spill catchment with a sump in the back provides added
containment around the base of the tank.However,the catchment basin ::.
would not be able to handle a major tank failure such as a tank rupture.The h:~~.:.:--~!
resulting overflow would flow towards Cell 1-1.~~:~
The two smaller storage tanks are located within an equal volume spill 'L'
containment dike east of the mill building.The tanks are not presently in {::
.,use,but are equipped with high level audible alarms.
The reportable quantity for a sulfuric acid spill is 65 gallons (1,000 pounds).
loJ 1.5.8 Vanadium Pentoxide
Vanadium pentoxide is produced when vanadium is processed through the
drying and fusing circuits and is not present in the vanadium circuit until after
the deammoniator.Efforts will be made to minimize leaks or line breaks that
may occur in processes in the circuit that contain vanadium pentoxide.
Special care will be taken in the transportation of this chemical.The
reportable quantity for a vanadium pentoxide spill is 1,000 pounds.
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1.5.9 Kerosene (Organic)
The kerosene storage area is located in the central mill yard and has a
combined capacity of 10,152 gallons in three tanks.Any overflow from these
three tanks w0l.!ld flow around the south side of the SX building and then into
Cell 1-1.These tanks have drain valves which remain locked unless
personnel are supervising draining operations.The reportable quantity for a
kerosene spill is 100 gallons.
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1.6.0
1.6.1
1.7
Used!Waste Oil
Used!Waste oil for parts washing is located north of the maintenance shop
in a tank and has a capacity of 5,000 gallons.The tank is contained within a
concrete containment system.Ultimate disposal of the used oil is to an EPA
permitted oil recycler.Any oil escaping the concrete containment system will
be cleaned up.Soil contaminated with used oil will be excavated and
disposed of in Cell 2.
Propane
The propane tank is located in the northwest corner of the mill yard and has
a capacity of 30,000 gallons.Daily monitoring of the tank for leaks and
integrity inspections will be conducted to minimize potential hazards
associated with propane leaks.Propane leaks will be reported immediately.
There is no reportable quantity associated with a propane spill.
POTENTIAL PETROLEUM SPILL SOURCES AND
CONTAINMENT
":,:1
This section details potential sources of petroleum spills and "reportable quantities".For
purposes of this SPCC,a "reportable quantity"will be defined as quantities listed below
which could be expected to reach navigable waters of the United States.It is not
expected that any spill would reach navigable waters of the United States.However,if a
spill of a volume listed below occurs,and remains on the mill site,which is the more
likely scenario,then management is to be notified so that proper internal evaluations of
the spill are made.
1.7.1 Petroleum Tanks
1.7.1.1 Diesel
Two diesel storage tanks are located north of the mill building.The tanks
have capacities of 250 gallons each.One of the diesel tanks is for the
emergency generator.The other tank is located in the pumphouse on an
elevated stand.Spillage from either tank would ultimately flow into Cell 1-1.
The reportable quantity for a diesel spill is 100 gallons.
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~~1.7.2 Aboveground Fuel Pump Tanks
1.7.2.1 Diesel
The diesel tank is located on the east boundary of Basin B3 and has a
capacity of 6,000 gallons.The tank is contained within a concrete catchment
pad.The reportable quantity for a diesel spill is 100 gallons.'"~':'~~~-,-,-~1.7.2.2 Unleaded Gasoline
The unleaded gasoline tank is located next to the diesel tank.The unleaded
gasoline tank has a capacity of 3,000 gallons and is contained within the
same containment system as the diesel tank.The reportable quantity for an
unleaded gasoline spill is 100 gallons.i"~
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'.1.7.2.3 Pump Station ;0-,to,'f:~
Both the diesel and the unleaded gasoline tanks will be used for refueling j::';
:1 company vehicles used around the mill site.The pump station is equipped
u with an emergency shut-off device in case of overflow dUring fueling.In
addition,the station is also equipped with a piston leak detector and
emergency vent.Check valves are present along with a tank monitor
console with a leak detection system.The catchment is able to handle a
complete failure of one tank.However,if both tanks failed the concrete
catchment pad would not be able to contain the spill.In this case,a
,1 temporary berm would need to be constructed.Absorbent diapers or floor
sweep would be used in an effort to limit and contain the spill.The soil would
;J be cleaned up and placed in the authorized disposal area in Cell 2.
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1.7.2.4 Truck Unloading
In the event of a truck accident resulting in an overturned vehicle in the mill
area,proper reporting and containment procedures will be followed when ,..
warranted,such as when oil or diesel fuel is spilled.Proper clean-up ~'",
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procedures will be followed to minimize or limit the spill.The spill may be
temporarily bermed or localized with absorbent compounds.Any soils .'j
contaminated with diesel fuel or oil will be cleaned up and placed in the
authorized disposal area in Cell 2.
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1.8 SPILL DISCOVERY AND REMEDIAL ACTION
Once a chemical or petroleum spill has been detected,it is important to take
measures to limit additional spillage and contain the spill that has already
occurred.Chemical or petroleum spills will be handled as follows:
The Shift Foreman will direct efforts to shut down systems,if
possible,to limit further release.
The Shift Foreman will also secure help if operators are requiring
additional assistance to contain the spill.
The Shift Foreman is also obligated to initiate reporting procedures.
Once control measures have begun and personal danger is
minimized,the Shift Foreman will notify the Production
Superintendent,Maintenance Superintendent,or Mill Manager.
The Production or Maintenance Superintendent will notify the Mill
Manager,who in turn will notify the Environmental Health and Safety
Manager.
The Mill Manager will assess the spill and related damage and direct
remedial actions.The corrective actions may include repairs,clean-
up,disposal,and company notifications.Government notifications
may be necessary in some cases.
If a major spill continues uncontrolled,these alternatives will be considered.:
1.Construct soil dikes or a pit using heavy equipment.
2.Construct a'diversion channel into an existing pond.
3.Start pumping the spill into an existing tank or pond.
4.Plan further clean-up and decontamination measures.
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1.9 SPILL INCIDENT NOTIFICATION
1.9.1 External Notification
As stated in Section 1.1,spills are not expected to reach navigable waters of
the United States.If a spill of a "reportable quantity"occurs,then mill and
corporate management must be notified and they will evaluate whether or not
the following agencies must be notified:
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1.EPA National Response Center
2.State of Utah,Department of Environmental
Quality,Division of Radiation Control
3.State of Utah
Water Quality Division
1-800-424-8802
801/536-4250
801/538-7200
801/538-6146
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In case of a tailings dam failure,contact the following agencies:
1.State of Utah,Department of Environmental
Quality,Division of Radiation Control 801/536-4250
2.State of Utah,Natural Resources 801/538-7200
1.9.2 Internal Notification
Internal reporting requirements for incidents,spills,and significant spills are
as follows:
Report Immediately
Event Criteria:
1.Release of toxic or hazardous substances
2.Fire,explosions,and accidents
3.Government investigations,information requests,or enforcement
actions
4.Private actions or claims (corporate or employee)
5.Deviations from corporate policies or government requirements by
management
Which have or could result in the following:
1.Death,serious injury,or adverse health effects
2.Property damage exceeding $1,000,000
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3.Government investigation or enforcement action which limits
operations or assesses penalties of $1 00,000 or more
4.Publicity resulted or anticipated
5.Substantial media coverage
Report At The Beginning Of The Next Day
Event Criteria:
1.Was reported to a government agency as required by law
2.Worker (employee or contractor)recordable injury or illness associated
with a release
3.Community impact-reported or awareness
4.Publicity resulted or anticipated
5.Release exceeding the reportable quantities listed in Section 1.5,for
each specific process material,waste,or by-product
In the event of a spill of a reportable quantity,the Mill Manager is required to
call the Corporate Environmental Manager or the President and Chief
Executive Officer.The individual first discovering the spill will report it to the
Shift Foreman,Production Superintendent or Maintenance Superintendent,
who will in turn ensure that the Mill Manager is notified.The Environmental
Health and Safety Manager will also be contacted by the Mill Manager.
In the event the next person in the chain-of-command cannot be reached,
then proceed up the chain-of-command to the next level.Table 1.0 shows the
organizational chart for the mill site.
Name
Mill Personnel:
Richard E.Bartlett
Wade Hancock
David E.Turk
N/A
N/A
Scot Christensen
Corporate Personnel:
Ronald F.Hochstein
David C.Frydenlund
Title Home Phone
Interim Mill Manager [phone]
Maintenance Foreman [phone]
Environmental Health and
Safety Manager [phone]
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Production Superintendent <.:~':',';..
Maintenance Foreman
Mill Shift Foreman [phone]
President and Chief Operating Officer [phone]
Vice President and General Counsel [phone]
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1.10 RECORDS AND REPORTS
The following reports and records are to be maintained in Central Files by the
Environmental Health and Safety Manager for inspection and review for a
minimum of three years:
1.Record of site monitoring inspections
a.Daily Tailings Inspection Data
b.Weekly Tailings Inspection and SUNey
c.Monthly Tailings Inspection,Pipeline thickness
d.Quarterly Tailings Inspection
2.Tank to soil potential measurements
3.Annual bulk oil and fuel tank visual inspections
4.Tank and pipeline thickness tests
5.Quarterly and annual PCB transformer inspections (if transformer
contains PCBs)
6.Tank supports and foundation inspections
7.Spill Incident Reports
8.Latest revision of SPCC plan
1.11 PERSONNEL TRAINING AND SPILL PREVENTION
PROCEDURES
All new employees are instructed on spills at the time they are employed and
trained.They are briefed on chemical and petroleum spill prevention and
control.They are informed that leaks in piping,valves,and sudden
discharges from tanks should be reported immediately.Abnormal flows from
ditches or impoundments are of immediate concern.In addition.a safety
meeting is presented annually by the Environmental Health and Safety
Manager to review the SPCC plan.
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1.11.1 Training Records
Employee training records on chemical and petroleum spill prevention are
maintained in the general safety training files.
1.11.2 Monitoring Reports
Shift logs shall provide a checklist for inspection items.
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1.12 REVISION
This procedure is to be reviewed by the mill staff and a registered
professional engineer at least once every three years,and updated when
circumstances warrant a revision.
1.13 Summary
Below is a table listing the specific reportable quantities associated with the
major chemical and petroleum products on-site.
CHEMICAL REPORTABLE
QUANTITY (RQ)
AMMONIA 100 POUNDS
AMV 1,000 POUNDS
SODIUM 1,000 POUNDS
HYDROXIDE
SODA ASH No Reportable
Quantity
SODIUM 400 GALLONS
CHLORATE
SULFURIC ACID 1,000 POUNDS
VANADIUM 1,000 POUNDS
PENTOXIDE
KEROSENE 100 GALLONS
OIL No Reportable
Quantity
PROPANE No Reportable
Quantity
DIESEL &100 GALLONS
UNLEADED
FUEL
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1.14 MilL MANAGER APPROVAL
I hereby certify that I have reviewed the foregoing chemical and petroleum
product SPCC plan,that I am familiar with the International Uranium (USA)
Corporation White Mesa Mill facilities,and attest that this SPCC plan has
been prepared in accordance with the Standard Operating Procedures
currently in effect.
Richard E.Bartlett
Interim Mill Manager
1.15 CERTIFICATION BY
REGISTERED PROFESSIONAL ENGINEER
I hereby certify that I have reviewed the foregoing chemical and petroleum
product SPCC plan,that I am familiar with the International Uranium (USA)
Corporation White Mesa Mill facilities,and attest that this SPCC plan has
been prepared in accordance with good engineering practices.
~~
/Harold R.Roberts
Registered Professional Engineer
State of Utah No.165838
14
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TABLES
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Personnel
Table 1 .
WhiteMesa Mill Management Personnel
Responsible for Implemenfing This BMPP
Mill Staff
Work Phone HomePhonel
Other Contact Number
Rich E.Bartlett Interim Mill Manager 435~678-2221 435 678-2495
Ext.105
0'.
r~1 Wade Hancock Maintenance Foreman 435-678-2221 435 678-2753
~;:Sl~;Ext.l66 f.:
..r~
Scot Christensen Mill Foreman 435-678-2221 435678-2015
:1;J David E.Turk Radiation Safety Officer 435-678-2221 435 678-7802
>Ext.113
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Corporate Management Staff
Personnel I!tk Work Phone HomePhonel
Other Contact
Number
Ron F.Hochstein President!ChiefOperating 604 806-3589 Cell:604377-1167 ,.,
[';Officer E~~~'
David C.Frydenlund Vice President and 303389-4130 303 221-0098
General Counsel Cell:303 808-6648
i
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TABLE 2.0
REAGENT TANK LIST
QUANTJTY'"~REAGENT'..'"CAPAGITYHGAlX,'..''......,':il.·
2 DIESEL 250
3 KEROSENE 10,152
1 USEDIWASTE OIL 5,000
1 DIESEL 6,000
1 UNLEADED 3,000
1 PROPANE 30,000
2 AMMONIA 31,409
1 SODIUM HYDROXIDE 19,904
1 SODA ASH SOLUTION 16,921
1 SODA ASH SHIFT 8,530
1 SODIUM CHLORATE 17,700
1 SODIUM CHLORATE 10,500
1 SULFURIC ACID 1,600,000
2 SULFURIC ACID 269,160
,,
!.,
TABLE 3.0
LABORATORY CHEMICAL INVENTORY lIST1
IIiJ
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Aluminum nitrate
Ammonium bifluoride
Ammonium chloride
Ammonium oxalate
Ammonium thiocyanate
Antimony potassium tartrate
n-ButyJ acetate
Carbon tetrachloride
Cyclohexane
Ferric chloride
Ferrous ammonium sulfate
Potassium chromate
Sodium nitrite
Sodium phosphate tribasic
Zinc acetate
Chloroform
Formaldeh de
Nitrobenzene
Toluene
2,270 kg
45.4 kg
2,270 kg
2,270 kg
2,270 kg
45.4 kg
2,270 kg
4.54 kg
454 kg
454 kg
454 kg
4.54 kg
45.4 kg
2,270 kg
454 kg
1.8 kg
2.27 kg
2.27 kg
6.8 kg
7.8 kg
0.454 kg
4L
1.0 L
24 L
6.810 kg
0.57 kg
0.114 kg
2.5 kg
1.4 kg
0.91 kg
8L
<1L of 37%solution
12 L
12 L
iItJ
1.This list identifies chemicals which are regulated as hazardous substances under the
Federal Water Pollution Control Act 40 CFR Part 117.The lab also stores small
quantities of other materials that are not hazardous substances per the above regulation.
2.Reportable Quantities are those identified in 40 CFR Part 117 Table 117.3:"Reportable
Quantities of Hazardous Substances Designated Pursuant to Section 311 of the Clean
Water Act."
TABLE 4.0
REAGENT YARD/SMALL QUANTITY CHEMICALS LIST 1
2.Reportable Quantities are those identified in 40 CFR Part 117 Table
117.3:"Reportable Quantities of Hazardous Substances Designated
Pursuant to Section 311 of the Clean Water Act."
1.This list identifies chemicals which are regulated as hazardous substances
under the Federal Water Pollution Control Act 40 CFR Part 117.Materials
in this list are stored in a locked storage compound near the bulk storage
tank area.The Mill also stores small quantities of other materials that are
not hazardous substances per the above regulation.
10lbs
10lbs
1 Ib
100lbs
100lb
32 gal
100lbs
100lbs
1,000 Ibs
1,000 Ibs
1,OOOlbs
5,0001bs
1,OOOlbs
Acetic Acid,Glacial
Carbon Disulfide
Calcium Hypochlorite
Chlorine
Ammonium H droxide
Hydrochloric Acid
Ferrous Sulfate Heptahydrate
Nitric Acid
Sodium Hypochlorite 5.5%
Potassium Permanganate 0.1 N
Silver Nitrate
Trich loroethylene
Xylene Mixed Isomers
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TABLE 5.0
REAGENT YARD/BULK CHEMICALS lIST1
I:'"....,'...,:..;,:"DE:AI"H"MT:;..»:<,.'.•..'.'1"Pj:~~.'{~;~~~:~:~~b"":"",'\1;·'·<....·.....,:::';",",,;.,
'-:-::.hi}."'.'""'::;",c:-r;Z,:/:'.i/··.1...,""':>,."
Sulfuric Acid 1,OOOlbs 9,000,000 Ibs
Floc #301 None 1,200lbs
HyperfJoc 102 None 1,5001bs
Ammonia -East Tank 100lbs Olbs
Ammonia -West Tank 100lbs 105,OOOIbs
Kerosene 100 gal 500 gal
Salt (Bags)None 2,OOOIbs
Ammonium Hydrogendifluoride None 20,4501bs
Soda Ash Dense (Bag)None Olbs
Phosphoric Acid 5,0001bs 6,3001bs
Polyox None 490lbs
Millsperse None 1,4101bs
Nalco TX760 None 9 barrels
Nalco 7200 None 1,5901bs
Tributyl phosphate None 9,4501bs
Distillates None 100 gal
Diesel 100 gal Approx.3300 gal
Gasoline 100 gal Approx.6000 gal
Alamine 336 drums None Olbs
Floc 109 None Olbs
Floc 208 None Olbs
Floc 904 None Olbs
Hyperfloc 624 None Olbs
Salt (BUlk solids)None Olbs
Salt (Bulk solutions)None Olbs
Caustic Soda 1,OOOlbs Olbs
Ammonium Sulfate None Olbs
Sodium Chlorate None 20,0001bs
Alamine 335 Bulk None oIbs
Alamine 310 Bulk None Olbs
Isodecanol None Olbs
Vanadium Pentoxide3 1000lbs 30,0001bs
Yellowcake3 None <100,000 Ibs
Ammonia Meta Vanadate 1000lbs Olbs
1.This list identifies all chemicals in the reagent yard whether or not they are regUlated as hazardous
substances under the Federal Water Pollution Control Act 40 CFR Part 117.
2.Reportable Quantities are those identified in 40 CFR Part 117 Table 117.3:"Reportable Quantities
of Hazardous Substances Designated Pursuant to Section 311 of the Clean Water Act."
3.Vanadium Pentoxide and Yellowcake,the Mill's products,are not stored in the Reagent Yard itself,
but are present in closed containers in the Mill Building and/or Mill Yard.
TABLE 6.0
PETROLEUM PRODUCTS AND SOLVENTS lIST1
Lubricating Oils in 55 gallon drums
Transmission Oils
Water Soluble Oils
Xylene (mixed isomers)
Toluene
Varsol Solvent
(2%trimethyl benzene in petroleum distillates)
100 gal
100 gal
100 gal
100lbs
1000lbs
100 gal
1,540 gallons
ogallons
30 gallons
ogallonsogallons
ogallons
.,,
1.This list includes all solvents and petroleum-based products in the Mill
warehouse petroleum and chemical storage aisles.
2.Reportable Quantities are those identified in 40 CFR Part 117 Table
117.3:"Reportable Quantities of Hazardous Substances Designated
Pursuant to Section 311 of the Clean Water Act."
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FIGURES
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Mill Site Layout
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MILL
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uemson Mines (USA)Corp.
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APPENDIX 2
WHITE MESA MILL
EMERGENCY RESPONSE PLAN
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EMERGENCY RESPONSE PLAN
REVISION leI
Denison Mines (USA)Corp.
nn..1·4-e 1\/f-~n 1\/f':11VV11lIVlt;~d IVllll
Blanding,Utah
April 14,1986
REVISED
February 16,2007
,~..:.
t;::
Distribution List:
1J
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1.
2.
3.
4.
5.
6.
7.
8.
Ron F.Hochstein
Rich E.Bartlett
David Turk
Michael Spillman
Mi11 Shift Foremen
Blanding Fire Department
San Juan County EMS Coordinator
State ofUtah,Department ofRadiation Control
1·-'.-..~~".
Revision Date:January 16,2006
1j
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6.0.
:]
7.0:1•I:,.J
8.0
9.0
TABLE OF CONTENTS
Page
Number
1.0 Introduction 1
2.0 "White Mesa Mill Background 1
3.0 Plan ~bj.ectjves :.:.:2
4.0 DescnptIOn ofFaclllbes .2
4.1 Fire Water Supply and Alarm Systems 2
4.2 Office Building and Laboratory .2
4.3 Solvent Extraction Building .3
4.4 Mill Building 4
4.5 Maintenance Shop/Warehouse/Change Room Building 5
4.6 Reagent and Fuel Storage 6
4.7 Boiler House 7
4.8 SaIllple Plant 7
5.0 Organization and Responsibilities 7
5.1 Mill ManagerlIncident Commander 7
5.2 Operations Superintendent..8
5.3 Radiation Safety OfficerlFire Chief..8
5.4 Maintenance Supervisor 8
5.5 Laboratory Supervisor 8
5.6 Shift Foremen 8
5.7 Scale House Personnel 8
5.8 Emergency Response TeaIlls 9
Specific Emergencies ,10
6.1 Fire 10
6.2 Chemical or Gas Release .1 0
6.3 Earthquake J0
6.4 TerroristIBomb TIneat 10
6.5 Tailings Dam Break and Major Floods .1 0
Evacuation Procedure 1]
7.1 Notification J]
7.2 Assembly 11
7.3 Specific Proeedmes for Operations Personnel...11
Off-Site Emergency Equipment/Personnel Release .11
Emergency Equipment 12
9.1 Fire Hose 12
9.2 SelfContained Breathing Apparatus .12
9.3 Spill Clean-up Equipment..]2
9.4 Fire Fighting PPE .12
]0.0 Emergency Transportation ]3
11.0 Emergency Evacuation Drills .13
EXHIBITS:
1.
2.
3.
4.
Emergency Notification List
Internal Notifications
Site Layout Map
Main Shut-offValves
E-1
E-2
E-3
E-4
i
~'~..
APPENDICES:
A.
B.
C.
Emergency Procedure Response to Fire
Emergency Procedure Response to Chemical or Gas Release
Emergency Evacuation Procedure
A-I
A-2
A-3
FIGURES:
11
~.'.···'.1
,
I
!I:'.:1
1.Fire System Schematic F-J
ii
-.:;.
'1
INTERNATIONAL URANIUM (USA)CORPORATION
Rev.No.:R-l
Date:Sept 29,2005 WHITE MESA MILLEMERGENCY RESPONSE PLAN Page]of 13
1.INTRODUCTION
This Emergency Response Plan is written not only to comply with Federal,State and local
regulations,but even more importantly to reduce the risk to our employees and that of the
community in regards to Health,Safety and Environmental Emergencies.
This plan includes the following:
It evaluation of the potential risks for fire,explosions,gas releases,chemical spills and
floods (including tailings dam failure);
•specific emergency programs for each potential event;
•definition ofadministrative response actions;and,
•definition ofthe emergency response contacts -both internal and external.
The White Mesa Mill (the "Mill")operates under the following regulatory agencies:
•Utah State Department ofEnvironmental Quality,Division ofRadiation Control;
•Mine Safety and Health Administration;
•Environmental Protection Agency;
•Utah State Department of~nvironmental Quality,Division ofAir Quality;and,
•Utah State Division ofNatural Resources Bureau ofDam Safety.
2.WIDTE MESA MILL OVERVIEW
The Mill processes conventional uranium or uranium/vanadium ores to recover uranium and
vanadium.In addition to the processing of conventional ores,the Mill also processes alternate
feed materials using similar process steps and chemicals.The conventional ore is stored on the
Ore Pad (shown in ExlTIbit 3).Alternate feed materials are also stored on the Ore Pad and may
be stored in bulk fonn,lined burrito bags,liners or drums.The descriptions of each alternate
feed material are maintained by the Mill's Radiation Safety Officer.
The Mill utilizes a semi~autogenous grind circuit followed by a hot sulfuric acid leach and a
solvent extraction process to extract uranium and vanadium from ores,using large amounts of
sulfuric acid,sodium chlorate,kerosene,amines,ammonia and caustic soda in the process The
reagent storage tank locations are described in further detail in Section 4.6.
Emissions from the Mill process are in the form of air emissions from exhaust stacks and
solid/liquid tailings which are stored in the Mill's tailings cells located west/southwest of the
main Mill building.The major exhaust stack parameters are shown in the following table.
Height Diameter Estimated Flow Rate
Description (ft from surface)(inches)(cfm)
Leach Exhaust -100 36 13,700
Yellow Cake Drying -85 18 4,000 per stack
(3 stacks)
Vanadium Roasting &-85 38 4100
Fusion
P:\Admin\Master SOPslBook J6_Emergency Response Plan\Emergency Response Plan Rev 1(09.29.05).doc
INTERNATIONAL URANJUM (USA)CORPORATION
Rev.No.:R-J
Date:Sept 29,2005 WHITE MESA MILL EMERGENCY RESPONSE PLAN Page 2 ofB
There are also smaller exhaust stacks associated with the Laboratory in the Mill Administration
building and the boiler exhaust stack.
The Mill's tailings cells are comprised offour below grade engineered cells,Cell 1-1,2,3 and
4A.Liquids are stored in Cell I-I and Cel]3,the active tailings cell.The liquid in the tailings
cells is very acidic.In addition to the tailings cells,there is also an emergency lined catchment
basin west ofthe Mill building.Solutions in this basin or the tailings cells should not be used to
fight fires in the Mill facility.
The products of the Mill include ammonium metavanadate (AMV),vanadium pregnant liquor
(VPL),vanadium pentoxide (V20S),and yellowcake,or uranium concentrate (uPs)'The V20 S
and U30 g products are packaged in steel drums for shipment.The AMY is packaged in either
steel drums or super-saks while the VPL is sold in liquid form in bulk.
Master files containing Material Safety Data Sheets for all materials in use at the Mill are
maintained at the Safety Office,Mill Maintenance Office,Mill Laboratory and Mill Central
Control Room.Copies are also on file at the Blanding Clinic,Doctor's Offices,Blanding Fire
House and Office ofthe San Juan County Emergency Medical Coordinator.
The nearest residence to the Mill is approximately one mile to the north ofthe Mill,the next is a
residence approximately two mile~north ofthe Mill,followed by the community ofWhite Mesa,
about 3.5 miles to the south.The City of Blanding is located approximately 6 miles to the
northeast.
The Mill site is near Utah State Highway 191 and can be accessed by a paved access road from
the highway to the Mill facilities.
3.PLAN OBJECTIVES
The primary objectives ofthis plan are:
1.To save lives,prevent injuries,prevent panic,and minimize property/environmental
damage to the lowest possible level..
2.To evacuate and account for all people in the area including visitors,truck drivers,
contractors,etc.
3.To provide assembly areas that are as safe as possible and which can be reached without
traveling through a hazardous area.Assembly areas will be properly manned to deal with
sick or injured persons,and provisions will be made to evacuate those persons to proper
shelter.
4.To make adequately trained personnel available to cope with rescue and recovery
operations as directed by the Incident Commander.
4.DESCRIPTION OF FACILITIES
The Mill facilities are shown on the Site Layout Map included as Exhibit 3.
P:\Admin\Master SOPs\Book 16_Emergency Response Plan\Emergency Response Plan Rev I (09.29.05).doc 2
INTERNATIONAL URANIUM (USA)CORPORATION
Rev.No.:R-l
Date:Sept 29,2005 WHITE MESA MILL EMERGENCY RESPONSE PLAN Page 3 of 13
4.1 Fire Water Supply and Alarm Systems
4.1.1 Fire Water Supply
The fire water supply facilities include:
lit 400,000 gallon Storage Tank ofwhich 250,000 gallons are reserved for fire emergencies
(!l Centrifugal diesel driven pump rated at 2,000 gpm at 100 psi.This pump starts
automatically when the pressure in the fire main drops below 100 psi (See Figure 1,Fire
System Schematic).
When more water is needed for an emergency an additional source is the Recapture Reservoir
supply pipeline,which can be utilized in emergencies at a rate ofabout 1,200 gpm.
4.1.2 Alarm System
The alarm systems include the following:
•public address system
•hand held radios
•siren.
4.2 Office Building and Laboratory
j
4.2.1 Office Building
The office building (approximately 10,000 square feet)contains the administration offices,
radiation health and safety offices and the Mill laboratory.The central file vault and the main
computer system are also in this building.The ambulance is kept on the west side ofthe office
building near the safety office entrance.
4.2.2 Laboratory
The laboratory facilities contain the following:
•three flammable cabinets (keys required)
•chemical storage room south ofmain lab
•six fume hoods -hoods 1,2,3 and 4 are in the center ofthe laboratory and hoods 5 and 6
are along the west walL Hoods 1 and 2 are no longer in service.Hoods 3 and 4 are on
the west side,1 and 2 are on the east side ofthe center cluster of hoods with 2 being in
front.Only hoods 5 and 6 may be used for perchloric acid.
e outside laboratory chemical storage north ofoffice building (key required)
•perchloric acid storage vault located underground west ofoffice building (key required)
A wide variety of chemicals in small quantities are located in the laboratory.These chemicals
range from acids to bases along with flammable metal compounds and peroxide fonrring
compounds.Oxidizers and organic chemicals,which have a strong potential of producing
harmful vapors if the containers are damaged to the point that the chemicals are exposed are
stored in a storage room in the laboratory.There are no acids stored in this storage room.The
acids (including but not limited to sulfuric,nitric,acetic,percWoric,phosphoric and hydrochloric
acids)are stored in the main laboratory area in 2.5 liter or 500-ml bottles.MSDS books for all
P:\Admin\Master SOPs\Book 16_Emergency Response PJan\Emergency Response Plan Rev 1(09.29.05).doc 3
IiJ
INTERNATIONAL URANIUM (USA)CORPORATION
Rev.No.:R-I
Date:Sept 29,2005 WIDTE MESA Mll..L EMERGENCY RESPONSE PLAN Page 4 of 13
chemicals in the laboratory are located in the Laboratory,Safety Department,Mill Maintenance
office and Mill Central Control room.
4.2.3 Electrical
Electrical transfonners and electrical switches are located in the laboratory at the east end ofthe
chemical storage room.
4.2.4 Fire Protection System
The fire protection systems in the office building and laboratory include:
Ie a fire hose station located on the east end ofthe office building.The station includes two
sets oftumout gear,two SCBA units and Incident Commander materials.
•automatic "wet"sprinkler system which is actuated at 2120 F
..portable dry chemical extinguishers strategically located throughout the building.
4.3 Solvent Extraction Building
The solvent extraction (SX)building (approximately 21,000 square feet)houses the uranium and
vanadium solvent extraction circ~its and the ELUEX circuit.The SX circuits may contain up to
200,000 gallons kerosene (757,000 liters)which has a flash point of1850 F.
Associated equipment in the SX building includes a temporary boiler located at the southwest
end ofthe SX building which maintains the temperature for the fire system.
Chemicals which may be encountered in the SX building include:
•Kerosene
\1 •Caustic Soda,.j Anhydrous Ammonia~_J •
•Sulfuric Acid..Salt (Brine)
•Soda Ash
•Ammonium Sulfate
•Amines
•Alcohol
•Sodium Chlorate
•Sodium Vanadate
•Propane
The VPL product is stored in the SX building.
4.3.1 Electrical
All electrical switches are located outside in the MCC room north ofthe SX building.The main
control panel for all of the equipment is located in the Central Control Room in the main Mill
building.
4.3.2 Fire Protection System
The SX building fire protection systems include:
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•a "wet"AFFF foam sprinkler system with heat actuated sprinkler heads that release at
212°P.
8 portable dry chemical extinguishers strategically located throughout the building.
For fire hydrant and hose cabinet locations in the SX building refer to the Fire System Schematic
included as Figure I in this Plan.
4.4 MillBuilding
The mill building (approximately 22,000 square feet)contains process equipment related to
grind,leach,counter current decantation,precipitation,drying and packaging of uranium and
vanadium products.
Chermcals which may be encountered in the mill building include:
•Caustic Soda
•Anhydrous Ammonia
•Sulfuric Acid
..Soda Ash
•Ammonium Sulfate
•Sodium Chlorate
•Sodium Vanadate
•Propane
The finished products which are contained in th'e mill building include AMY,V20S and U30 g(or
yellowcake).
4.4.1 Electrical
The main electrical switch gear is located west of the SAG mill on the ground floor in the north
west comer ofthe mill building.Circuit control panels are located in the SAG mill control room,
the central control room,the vanadium roaster control room and the AMY area.
4.4.2 Fire Protection System
The main mill building fire protection systems include:
•portable dry chemical extinguishers strategically located throughout the building.
•water hoses throughout the building.
For fire hydrant and hose cabinet locations in the Mill building refer to the Fire System
Schematic included as Figure 1 ofthis Plan.
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4.5 Maintenance ShoplWarehouse/Change Room Building
This building (approximately 20,000 square feet)contains the main maintenance shop area
(located on the north end ofthe building),the main warehouse (located on the south end ofthe
building)and the personnel change rooms and lunch/training room (located on the extreme south
end ofthe building on the ground and second floors).
Within the maintenance shop area are the following work area and specialty shops:
."'-...
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8 the main maintenance shop area contains welding and cutting equipment,lathes,presses,
and drill presses.
e a carpenter shop which contains various saws and planes.Fiberglass work is also done
within this shop area and it is located at the northwest end ofthe maintenance shop area.
It an electrical shop which is located south ofthe carpenter shop.
e a heavy equipment maintenance shop area is located at the north end ofthe maintenance
shop in the center ofthe building.
II a rubber room for rubber lining ofequipment is located east ofthe equipment shop area.
II the maintenance shop office,instrument shop and tool room are located at the south end
ofthe maintenance shop area.
The warehouse area contains primarily dry good storage for repair parts and consumables for the
operation ofthe Mill.There is an electrical water heater for the change room which is located in
the warehouse area at the south end.
Within the warehouse and maintenance shops there are some oils and chemicals stored in the
following locations:
small quantities of flammable material such as starting fluid and spray paint are kept in
the warehouse.
drums of new oil and anti-freeze are stored along the east wall of the equipment
maintenance area and on the east side ofthe warehouse on oil storage racks.
used oil is stored in a tank located northeast ofthe equipment shop.The tank has a
capacity ofapproximately 5,800 gallons.
in the main maintenance shop area and the rubber room there are flammable storage
cabinets and east of the warehouse there is a trailer which is used to store flammable
items such as rubber cements,paints and fiberglass resins.
compressed gas cylinder storage,both empty and full is located outside,east of the
maintenance shop.
4.5.1 Electrical
The main electrical circuit breaker for the maintenance shop and warehouse building is located
on the east wall inside the Maintenance shop.Auxiliary electrical panels for the change room
and warehouse are located in the southwest comer ofthe warehouse area.
4.5.2 Fire Protection System
The fITe protection system within the maintenance shop/warehouse/change room building
includes:
•"wet"automatic sprinkler system that releases at 2120 F.
•portable dry chemical extinguishers strategically located throughout the maintenance
area,warehouse area and the change room and lunch room.
For fire hydrant and hose cabinet locations refer to the Fire System Schematic (Figure 1).
4.6 Reagent and Fuel Storage
The following lists the reagents and fuel stored at the Mill site:
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•a sulfuric acid tank located northwest of the mill building which has a capacity of
approximately 1.4 million ganons.
•a storage tank for propane is located on the north edge ofthe mill site,northwest ofthe
mill building.It has a storage capacity of30,000 gallons.
•four sodium chlorate tanks located east ofSX building,north of the office building and
east of the pulp storage tanks.The two tanks east of the SX building are for sodium
chlorate storage and the other two tanks are for dilution ofthe sodium chlorate.
e two anhydrous ammonia tanks located east ofthe SX building,with capacity of 31,409
gallons each.
GO three kerosene tanks located east ofthe SX building,with a capacity of 10,152 gallons
each.
II one caustic soda tank north ofthe SX building,with a capacity of 19,904 gallons.
..three .soda ash tanks which are located east ofthe SX building.One tank is the dry soda
ash tank with a capacity of70,256 gallons.Two of the tanks are soda ash dilution tanks
with capacities of16,921 gallons each.
o diesel fuel and gasoline are stored in two tanks located on the eastern side ofthe ore pad.
The gasoline storage capacity is 3,200 gallons,while diesel storage capacity is 8,000
gallons.
Other reagents are stored in steel barrels or super sacs in a reagent yard located east ofthe office
building.Typical reagents which ~e stored in this yard include:
•polymers and flocculants
•boiier feed water chemicals
•methanol
•tributyl phosphate
•"dirty"soda ash and ammonium sulfate
•SX amines and emulsion breakers
•decyl alcohol
•minimal amounts ofacid in barrels
•used oil in drums and overpacks
4.7 Boiler Facilities
The main building (approximately 12,400 square feet)is located on the west side of the Mill site
and contains air compressors and water treatment facilities.To the north ofthe main building is
a building which houses a propane-fired boiler.The vanadium oxidation tank,oxidation
thickener,and pH adjustment tank are located south ofthe boiler house facilities.
4.7.1 Electrical
The main electrical panel for the boiler house is located outside of the building,on the south
wall.
4.7.2 Fire Protection System
The fire protection system for the boiler facilities is comprised of strategically located portable
dry chemical extinguishers.
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4.8 Sample Plant
The sample plant building (approximately 8,000 square feet)is located on the ore pad,east ofthe
maintenance shop/warehouse building.The sampling plant equipment has been removed from
the building and it is currently used as a storage area for maintenance.
4.8.1 Electrical
The electrical panel for tbis building is located on the east wall upstairs.
4.8.2 FireProtection System
There are no extinguishers or sprinkler systems in the sample plant.
5.ORGANIZATION AND RESPONSIBILITIES
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The orgarnzational chart for an emergency situation is illustrated in Figure 2.
5.1 Mill ManagerlIncident Commander --
The Incident Commander has the responsibility for:
..preparing an Emergency Plan
..communicating the Plan,
..directing activities during emergencies;and,
..reporting to local,State and Federal authorities.
The Incident Commander will stop routine radio usage upon learning ofan emergency and set up
the base station in a safe location for directing activities.Radio usage will be limited to the
emergency.The Incident Commander has the responsibility to contact all outside services.
The Incident Commander has the responsibility to account for aU employees at the Mill,using
the assistance of supervisors and/or any International Uranium -(USA)Corporation ("IUSA")
personnel.The Incident Commander has the responsibility for the news media and reports
directly to the President ofIUSA.
5.2 Mill General Superintendent
The Mill General Superintendent has the responsibility ofdirecting outside emergency personnel
and has the responsibility for plant security and will report directly to the Incident Commander.
The Mill General Superintendent will act as Incident Commander in the absence of the Mill
Manager.
5.3 Radiation Safety OfficerlFire Chief
The Radiation Safety Officer will direct rescue operations and provide the necessary emergency
medical personnel and facilities to cope with the emergency.Adequately trained fire crews and
operable emergency equipment 'will be maintained at all times.
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As Fire Chief,the Radiation Safety Officer has the responsibility to maintain trained fIre crews
and operable equipment,mobilize and direct the fIre crews and equipment in a fIre emergency or
one containing the threat offIre,and to assist in evacuation and rescue or recovery operations.
In the absence ofthe Radiation Safety Officer,the Mill Safety Coordinator will assume these
duties.
5.4 Maintenance Supervisor
The Maintenance Supervisor will direct all personnel in evacuation and in activities to cope with
the emergency,including isolation of utilities and providing technical advice as needed.The
Maintenance Supervisor will be assisted by the Mill Safety Coordinator.
5.5 Laboratory Supervisor
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The Laboratory Supervisor has the responsibility to direct and account for all office personnel
(including lUSA personnel and office visitors)in evacuation and in activities to cope with the
emergency.In case of a mill tour the Supervisor accompanying the tour will be responsible for
evacuation ofvisitors.
5.6 Shift Foremen
Shift Foremen are in charge until the Incident Commander arrives and are responsible for all
functions listed above.Shift Foremen have the responsibility to account for all oftheir people in
addition to any visitors,contractors,etc.,in their areas and report to the Incident Commander;or,
in the absence ofthe Incident Commander,to administer all ofthe above duties.
5.7 Scale House Personnel
Scale house person on shift will be responsible to account for ore truck drivers and reagent truck
drivers.
5.8 Emergency Response Teams
The response crew for each operating shift will nonnally consist ofthe following operators under
the direction ofthe shift foreman.This organization may be changed for individual shifts subject
to the approval ofthe Fire Chief.
5.8.1 Operational Mode
Leach Operator
CCD Operator
Solvent Extraction Operator
Mill Trainee
5.8.2 Non-Operational Mode
Shift Foreman
Operations Personnel
Maintenance Personnel
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Figure 2
Emergency Response Organizational Structure
Incident Commander
Mill Manager
Director of Security
Operations Superintendent
Fire Chief
Radiation Safety Officer,
I I
I ShiftForemen I Emergency Response Teams I lab Supervisor I
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Operatiohal Mode Non-Operational Mode
leach Operator,CGD Operator Shift Foreman,Operations Personnel
SX Operator,Mill Trainee Maintenance Personnel
6.SPECIFIC EMERGENCIES
The following details procedures to be followed during specific emergencies but are not limited
to the following.
6.1 Fire
Should a fire occur,the procedure outlined in Appendix A for reporting and responding to fires
will be followed.Particular areas ofconcern include:
•Solvent Extraction Building
•Propane Tanks
•Lab or Lab Storage Area
6.2 Chemical or Gas Release
The procedures for response to a chemical or gas release are outlined as Appendix B.
6.3 Earthquake
Although this is highly unlikely,an earthquake could occur at the Mill.A severe earthquake
could cause buildings and other structures to collapse,chemical and/or gas releases,major fires
as well as general panic.In the event of a major earthquake the evacuation procedures outlined
in Appendix C will be followed.
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6.4 Terrorist/Bomb Threat
In the event that any person should receive a threat of a bomb,the following evacuation
procedure should be followed:
Notify any person ofauthority,i.e.,Superintendent,Foreman,Radiation Safety Officer,
who will immediately notify law enforcement authorities and evacuate the threatened
area.
Evacuate all persons from the affected area and stop all radio transmissions.
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In the event ofa seismic rupture oftailings slurry pipelines,the released slurry will be contained
in the tailings cells regardless ofthe quantity released.
The tailings cells and dikes are inspected on both a daily and shift basis.
Discharges from a dike failure would extend three miles before leaving IUSA's property.In the
event of a dam failure,large operating equipment will be mobilized to construct temporary
earthen dikes or berms downgradient to the failed dike.In addition,the State of Utah,
Department of Radiation Control Executive Secretary (the "Executive Secretary),MSHA,and
State ofUtah,Department ofNatural Resources,Division ofDam Safety shall be notified.
6.5 TaiJings Dam Break and MajorFloods
Flood water breaching tailings embankments presents one ofthe greatest dangers for the sudden
release of tailings solids and impounded water.The tailings cells are designed with sufficient
freeboard (three feet)to withstand back-to-back 100-year stann events or 40%of the probable
maximum flood (PMF)followed by the 100-year stann event.The flood design is equivalent to
15 inches ofrainfall.In addition,the tailings dikes were designed in accordance with U.s.NRC
regulations and allow a sufficient margin ofsafety even in the event ofan earthquake.
The possibility offloods resulting from Westwater Creek,Cottonwood Creek,and Corral 'Creek
causing a dam failure is extremely.remote.
EVACUATION PROCEDURE (See Appendix C)7.
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7.1 Notification
Employees will be notified to evacuate the area by dialing 184 on any area telephone and
announcing that the Mill should be evacuated.TIlls announcement will be repeated twice.When
the paging system cycles through,the evacuation siren (continuous frequency)will automatically
sound for approximately forty-five seconds,and then automatically shut off,allowing
communications by radio from that point.If the 184 number is dialed accidentally the
evacuation alarm may be canceled by disconnecting the phone until the page cycle ends,then re-
dial 184.(See Exhibits 1 and 2.)
7.2 Assembly
When the evacuation alarm sounds or when personnel are verbally notified by radio or other
means,all personnel will assemble at:
The parking lot south ofthe ofiice,
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"The scalehouse,
"North side ofTailings CellI,or
"North ofthe Mill
Assembly site will depend upon conditions,i.e.nature of the emergency,wind conditions,etc.
The Fire Chiefor Shift Foreman will specify the appropriate assembly site.
7.3 Specific Procedure for Operations Personnel
1.See specific emergency shutdown procedure for Operations by area under the relevant
Operating Procedure for your area.
2.All employees not mentioned under Operating Procedures are to immediately report to
the assembly area and congregate by crew so that all persons can be accounted for.As
employees leave their work areas,they must pass the word to evacuate to any persons
who may not be aware ofthe emergency.
3.After the Mill has been determined to be safe for re-entry,employees will be verbally
notified to return to their work stations.
8.Off-Site Emergency EquipmentlPersonnel Release
Any emergency response equipment or personnel that enter the Restricted Area in response to an
incident will be scanned and decontaminated prior to leaving the site according to IDe procedures
included in PBL-9,End Dump Trailer Acceptance,Handling and Release.Any equipment will
be decontaminated according to the requirements found in Table 1 of the Nuclear Regulatory
Commission's (NRC's)Policy and Guidance Directive FC-85-23,"Guidelines for
Decontamination of Facilities and Equipment Prior to Release for Unrestricted Use or
Termination ofLicenses for Byproduct,Source,or Special Nuclear Material"issued May 1987.
Injured personnel should be evaluated for radiation contamination,if there was a potential for
contamination,at the earliest convenience.Should it be necessary,contaminated articles will be
gathered by the radiological staff after medical treatment has been rendered.If the personnel
cannot be decontaminated,notify the clinic/hospital personnel in advance.
9.EMERGENCY EQUIPMENT
Emergency equipment for the Mill is provided as follows.
9.1 Fire Hose
Fire bose cabinets are located at the following sites with a minimum onoo feet of 2-112"hose,
two spanner wrenches,spray nozzles and one hydrant wrench.
•
•
•
•
•
South ofSX
WestofCCD
North ofMill Building
East ofpulp storage tanks
Northwest ofMaintenance Shop
West ofWarebouse
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..East ofoffice building
9.2 Self Contained BreathingApparatus
Two Self-Contained Breathing Apparatus are located at each ofthe following locations:
..Hose station east ofoffice building
..Hose Station South ofSX
•North End SX Outside Wall
8 North end ofMill building,outside wall
9.3 Spill Clean-up Equipment
Barrels of soda ash are located throughout the Mill to be used in case ofa chemical spill.Soda
ash is also stored in bulk if needed.There are also a few drums of absorbent stored near the
laboratory.The laboratory also contains acid spill kits and absorbent materials to be used in case
ofa spill.
9.4 Fire FightingPPE
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Two complete sets of turnout ge~for fire fighting andlor emergency extrication are located in
the Fire Hose Station located on the east side ofthe office building.
9.5 Maintenance ofEmergency Equipment
Fire extinguishers are inspected on an annual basis,as we]]as the fire pump system.The Mill
Safety Coordinator performs regular spot checks on the emergency equipment locations to ensure
that all ofthe equipment is in place.
10.EMERGENCY TRANSPORTATION
One fully-equipped First Responder Unit (Ambulance)located west ofthe office building.
Other motor pool vehicles on the property will be utilized as needed in emergency situations with
suppOli as needed from the local Emergency Medical Services.
11.EMERGENCY DRILLS AND TRAINING
Quarterly drills,as required by MSHA,are prepared by the Safety and Radiation Departments to
monitor performance of personnel responding to emergency situations.Each drill will be
enacted upon one or more of the potential scenarios by this plan.The drill and evacuation
activities are documented by the Mill's Safety Coordinator and maintained within plant files.
Management will review all drills at quarterly ALARA Committee Meetings.
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EXHIBIT 1
EMERGENCY NOTIFICATION LIST
ATTEND TO ANY INJURED PERSONS AND NOTIFY THE SUPERVISOR:
Give artificial respiration ifnecessary.
Control bleeding.
Treat for shock.
Immobilize fractures and stabilize for transportation.
Scan the injured for excessive alpha prior to transporting iftime allows.
(If alpha is excessive or there is no time to scan,notify the cliniclhospital persOlll1e1 and the
Radiation Safety Office).
THE SUPERVISOR OR HIS DESIGNEE WILL NOTIFY THE FOLLOWING AS NEEDED:
Blanding Clinic 678-2254 or 678-3434 (930 N.400 W.)
San Juan Hospital,Monticello 678-2830 or 587-2]]6 (364 W.]st N.)
EMT and CPR TRAINED -The following personnel should be contacted,if they are on-site,in the
event of an emergency to aid in the event of any injuries to personnel.
David Turk -EMT and CPR trained
Mike Spi1Jman -CPR trained
AMBULANCE SERVICE
Blanding Dial 911
If the Company Ambulance is used,an attendant must ride with the injured in addition to the driver,
except where the injured could nonnally be transported in a car or pickup.
OTHER EMERGENCY NUMBERS
Fire Department Dial 911 or 678-2313
County Sheriff Dial 9]I or 587-2237
Highway PatroL Dial 911 or 587-2000
Blanding Police Dial 91 1,678-29]6 or 678-2334
MANAGERS
The Supervisor will notifY one ofthe foHowing ofall incidents:
R.E.Bartlett 435-678-2495
D.Turk 435-678-7802 or 435-459-]068
M.Spi1Jman 435-678-2761
A MEMBER OF MANAGEMENT WILL NOTIFY THE PROPER REGULATING AGENCIES
AS REQUIRED FOR EACH INCIDENT:
State ofUtah,Department ofRadiation ControL 801-536-4250
MSHA Field Off.--80]-524-3450 Dist.Off 303-231-5465
MSHA,Arlington 800-746-1553
State Emergency Response Comm 801-538-3400
State ofUtah,Natural Resources,Dam Safety 801-538-7200
National Response Center 800-424-8802
Utah Poison Control Center 800-456-7707
Notification of surrounding communities and or residences will be handled by the appropriate agencies as
required by EPCRA (Emergency Planning and Community Right to Know Act).
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EXHIB1T2
INTERNAL NOTIFICATIONS
Internal reporting requirements for Incidents,Spills and Significant Events are as follows:
ReportImmediately:
Event Criteria:
Release of toxic or hazardous substances.
Fire,explosions or other accidents.
Government investigations information,requests or enforcement actions.
Private actions or claims (corporations or employees).
Deviations from Corporate policies or government requirements by Management.
Other significant events,which have resulted or could result in:
Death,serious injury or adverse health effect (employees or public).
Property damage exceeding $1,000,000.
Government investigation or enforcement action -limiting operation or penalties
of$100,000 or more.
Significant criminal actions.
Substantial media coverage.
Unscheduled down ,time ofmore than 24 hours.
Renort at the Bel!inninll of the Next Business Dav:
Incident Criteria:
Was reported to a government agency as required by law.
Worker (IUSA or contractor)recordable injury or illness associated with a release.
Community impact -reported or awareness.
Publicity resulted or is anticipated.
Release of process material,waste or product in excess of the Reportable
Quantities listed in Section 1.5 of the Spill Prevention,Control,and
Countermeasures Plan.
The local manager in charge is to call Ron Hochstein or Dave Frydenlund.
Name Title Office Phone HomePhone
Ron Hochstein (president and COO)303-628-7798 (office)
604-931-6334 (home)
604-377-1167 (cell)
David Frydenlund (V.P.and General Counsel).303-389-4130 (office)
303-221-0098 (home)
303-808-6648 (cell)
Master SOPs\Book 16_Emergency Response PJan\Emergency Response Plan Rev 0 (02.14.07).E-2
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EXHIBiT 3
SITE LAYOUT MAP
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EXHlBIT4
MAIN SHUT-OFF VALVES
During an emergency this list should be used along with Site Layout Map (Exhibit 3)to locate
tanks and valves associated with these tanks.
REAGENT SHUT-OFF VALVE LOCATIONS
Sulfuric Acid
4"Main located south side ofacid tank
East acid pump discharge valve
West acid pump discharge valve
3"Main (leach area)located 25 feet west ofDerrick screens next to walkway
1-1/2"Main (SX area)located south ofCentra]Control room
Ammonia
4"Main (east tank)located on end at bottom
4"Main (west tank)located on end at bottom
2"Valve located on top ofiank (east tank)
2"Valve located on top oftank (west tank)
Kerosene
2"Main valve located at bottom oftank (east tank)
2"Main valve located at bottom oftank (north tank)
2"Main valve located at bottom oftank (south tank)
Pump discharge 2"valve
Soda Ash
Main valve located at bottom oftank (dry storage)
4"Main valve located at bottom oftank on 30%dilution tank
4"Main'valve locate at bottom oftank on dilution tank
Salt
3"Main valve located at bottom oftank
Caustic Soda
3"Main valve located at bottom oftank east and west between supports
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MAIN SHUT-OFF VALVES
Sodium Chlorate
3"Main valve located at bottom oftank (east tank)
3"Main valve located at bottom oftank (north tank)
3"Main valve located at bottom oftank (south tank)
Propane
4"Main located 15 feet east oftank
3"Main located on pipe offtop oftank
3"Main located at bottom oftank (also fill pipe)
PLANT UTILITY SHUT-OFF VALVE LOCATIONS
Process Water
Main valve located on west side ofwater storage tank
Discharge valve offservice water pump east
Discharge valve offservice water pump west
Mill process water main located east wall by SAG mill
Fire Water
Main valve located west side ofwater storage tank
Emergency fire pump discharge valve to fire system
Emergency fire pump discharge valve to header west side ofpump house
8"Main valve located south ofCentral Control room for SX and boilers
Potable Water
2"Main (suction)from potable water storage tank
2"Main (discharge)from potable water storage tank
4"Main located at east wall by SAG mill
4"Main located south of Central Control room for SX,Maintenance shop,and offices
Steam
Main discharge valve for Superior boiler located at top ofboiler
Main steam valve located south side ofboiler house
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EXHIBIT 4
MAIN SHUT-OFF VALVES
Plant Air
Main valve located at receiver tank in compressor room at boiler house
Main valve to mill building located south of Central Control room
PROCESS SHUT·OFF VALVE LOCATIONS
Pulp Storage
No.1 valve located on west side oftank
No.3 valve located on west side oftank
Preleach (old No.2 pulp storage)valve located on west side oftank
Preleach Thickener
Main valve located underneath at center cone
Clarifier
Main valve located undern'eath at center cone
Main vaive iocated underneath at center cone
CCD Thickeners
Main valve located underneath at center cone ofeach thickener
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APPENDIX A
EMERGENCY PROCEDURE RESPONSE TO FIRE
The fire will be reported by dialing 185 on any telephone in the area and announcing the
location of the fire over the paging system.This announcement will be repeated twice,
for a total ofthree announcements.When the paging system cycles through,the fire siren
(alternating frequency)will automatically sound for approximately forty-five seconds
then automatically shut off,allowing radio communications to resume.
Mobilize the fire crew.
Evacuate all personnel.
Rescue any victims ofthe fire;do this only with properly trained and equipped personnel.
Isolate utility lines affected by the fire.
Extinguish the fire and post a fire watch for flare-ups.
Report the fire to proper local,State,Corporate and Federal agencies.
In cases where the fire is not extinguished within thirty minutes of discovery,the area
must be ba..;caded off after extinguishing and left ui'1disturbed until released by MSHA
and lUSA management.
Emergency off-site centers -Blanding Fire House and Sheriffs office:
Blanding Fire
350 West 200 South,Blanding
Phone number is 911
Sheriffs Office
50 West 100 South,Blanding
Phone number is 911 or [phone]
t:
L,.
P:\Admin\Master SOPs\Book 16_Emergency Response PJan\Emergency Response Plan Rev 0 (09.29,05),doc A-l
APPENDIXB
EMERGENCY PROCEDURE
RESPONSE TO CHEMICAL OR GAS RELEASE
A chemical or gas release would most likely occur very suddenly.The person who would first
witness a chemical or gas release should immediately contact his supervisor who would initiate
the procedures outlined below:
1.
2.
3.
4.
5.
(,)6.
I..J
i
[j.
,,
t
!
Activate evacuation alann by using the "dial 184"notification system.Evacuate and
account for all persoIll1el.
Mobilize trained persoIll1el and emergency equipment such as SCBA's,first aid
equipment,etc.
Initiate rescue operations for any people who may be trapped by the release.
Provide first aid and emergency medical care for any ill or injured persons.
Initiate necessary steps to contain and/or neutralize the release,such as spraying with
water fog,turning offvalves,etc.
Guard against possible fires by shutting off electrical circuits,isolating gas lines and
eliminating ignition sources from the affected area.
tf1;--,-.-.
P:\Admin\Master SOPs\Book 16_Emergency Response Plan\EmergencyResponse Plan Rev 0 (09.29.05).doc A-l
I
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,;
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APPENDIXC
EMERGENCY EVACUATION PROCEDURE
].Activate evacuation alarm by using the "dial 184"notification system.Evacuate and account
for all personnel.
2.Personnel are to assemble in one ofthe following areas:
e The parking lot south ofthe office building
The scalehouse
The north side ofTailings CellI,or
e North ofthe Mill
3.Mobilize trained personnel and emergency equipment such as SCBA's,first aid equipment,
etc.
4.Initiate rescue operations for any people who may be trapped.
5.Provide fIrst aid and emergency medical care for any ill orinjured persons.
6.Guard against possible fires by shutting off electrical circuits,isolating gas lines and
eliminating ignition sources from the affected area.
.;-2
P:\AdminlMaster SOPs\Book 16_Emergency Response Plan\Emergency Response Plan Rev 0 (09.29.05).doc A-I
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FIGURE 1
FIRE SYSTEM SCHEMATIC DRAWING
P:\Admin\MasterSOPs\Book 16_EmergencyResponse Plan\EmergencyResponse Plan Rev 0 (0929.05).doc A-I
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APPENDIX D
Tailings Cover Design,White Mesa Mill
October 1996.
Titan Environmental Corporation
(PREVIOUSLY SUBMITTED)
APPENDIX E
NATIONAL EMMISSION STANDARDS
FOR HAZARDOUS AIR POLLUTANTS
2008 RADON FLUX MEASUREMENTS PROGRAM
National Emission Standards for Hazardous Air Pollutants
2008 Radon Flux Measurement Program
White Mesa Millsite
6425 South Highway 191
Blanding, Utah 84511
Prepared for:Denison Mines (USA)Corporation
6425 S.Highway 191
P.O.Box 809
Blanding,Utah 84511
Prepared by:Tellco Environmental
P.O.Box 3987
Grand Junction,Colorado 81502
TABLE OF CONTENTS
Page
1.INTRODUCTION 1
2.SITE HISTORY AND DESCRIPTION 1
3.REGULATORY REQUIREMENTS FOR THE SITE 1
4.SAMPLING METHODOLOGy 2
5.FIELD OPERATIONS 2
5.1 Equipment Preparation 2
5.2 Sample Locations,Identification,and Placement 3
5.3 Salnple Retrieval 3
5.4 Environmental Conditions 3
6.SAMPLE ANALYSIS 4
6.1 Apparatus 4
6.2 Sample Inspection and Documentation 4
6.3 Background and Sample Counting 4
7.QUALITY CONTROL (QC)AND DATA VALIDATION 5
7.1 Sensitivity 5
7.2 Precision 5
7.3 Accuracy 5
7.4 COlnpleteness 6
8.CALCULATIONS 6
9.RESULTS 7
9.1 Mean Radon Flux 7
9.2 Site Results 8
References 9
Figure 1 10
Appendix A.Charcoal Canister Analyses Support Documents
Appendix B.Recount Data Analyses
Appendix C.Radon Flux Sample Laboratory Data,Including Blanks
Appendix D.Sample Locations Map (Figure 2)
i
1.INTRODUCTION
During June 2008,Tellco Environmental,LLC (Tellco)of Grand Junction,Colorado,provided
support to Denison Mines (USA)Corporation (Denison Mines)regarding the required National
Emission Standards for Hazardous Air Pollutants (NESHAPs)Radon Flux Measurements.These
measurements are required of Denison Mines to show compliance with Federal Regulations.The
standard is not an average per facility,but is an average per radon source.
Tellco was contracted to provide radon canisters,equipment,and canister placement personnel as well
as lab analysis ofsamples for calendar year 2008.The sampling effort commenced on June 09,2008.
Denison Mines personnel provided support for loading and unloading charcoal from the canisters.
This repOli includes the procedures employed by Denison Mines and Tellco to obtain the results
presented in Section 9.0 ofthis report.
2.SITE DESCRIPTION
The White Mesa Millsite facility is located in San Juan County in southeastern Utah,a few miles
south ofBlanding,Utah.The mill began operations in 1980 for the purpose ofextracting uranium and
vanadium from feed stocks.Processing effluents from the operation are deposited in four "lined"
cells,which vary in depth.Cells 1 and 4 are used solely for "liquor"storage,while Cells 2 and 3 are
used for sand tailings/liquor deposition.
Cell 2 has a total area of approximately 270,624 square meters (m2)with a soil cover of varying
thickness.This cell had one region that required NESHAPs radon flux monitoring.The remaining
tailings beach region from the 2006 radon flux monitoring program had been covered.
Cell 3 has a total area of 288,858 m2.This cell was comprised of two source regions that required
NESHAPs radon monitoring:approximately 147,251 m2 of the cell had a soil cover of varying
thickness,and approximately 66,536 m2 of exposed tailings "beaches".The remaining approximately
75,071 m2 was covered by standing liquid in "low"elevation areas.The standing liquid level was
about the same as in 2006.Raffinate crystals and residue from Cell 4 have been placed in Cell 3.
The areas tested for radon emanation are representative of the disposition of tailings for the 2008
reporting period.Due to worker health and safety concerns expressed by both Denison Mines and
Tellco personnel,portions ofthe unstable and wet beaches and covered areas were not sampled.
3.REGULATORY REQUIREMENTS FOR THE SITE
Radon emissions from the uranium mill tailings piles at this site are regulated by the State of Utah's
Division of Radiation Control and administered by the Utah Division ofAir Quality under generally
applicable standards set by the Environmental Protection Agency (EPA)for Operating Mills.
Applicable regulations are specified in 40 CFR Pmi 61,Subpart W,National Emission Standards for
Radon Emissions from Operating Mill Tailings,with technical procedures in Appendix B.At present,
there are no Subpart T uranium mill tailings at this site.These regulations are a subset ofthe National
Emission Standards for Hazardous Air Pollutants (NESHAPs).According to subsection 61.252
1
Standard,(a)radon-222 emissions to ambient air from an existing uranium mill tailings pile shall not
exceed an average of 20 picoCuries per square meter per second (pCi/m2-s)for each pile or region.
Subsection 61.253,Detennining Compliance,states that:"Compliance with the emission standard in
this subpart shall be detennined annually through the use ofMethod 115 ofAppendix B."
4.SAMPLING METHODOLOGY
Radon emissions were measured using Large Area Activated Charcoal Canisters (canisters)in
confonnance with 40 CFR,Pati 61,Appendix B,Method 115,Restrictions to Radon Flux
Measurements,(EPA,2008).These are passive gas adsorption sampling devices used to detennine
the flux rate of radon-222 gas from a surface.The canisters were constructed using a 10-inch
diameter PVC end cap containing a bed of 180 grams of activated,granular charcoal.The prepared
charcoal was placed in the canisters on a support gIid on top of a Y2 inch thick layer of foam and
secured with a retaining ring under 1Y2 inches offoam (see Figure 1,page 10).
One hundred canisters were placed in each region.Due to worker health and safety concerns,
measurement of the wet beach areas was limited to areas readily accessible by foot.Each charged
canister was placed directly onto the surface (open face down)and exposed to the surface for 24
hours.Radon gas adsorbed onto the charcoal and the subsequent radioactive decay of the entrained
radon resulted in radioactive lead-214 and bismuth-214.These radon progeny isotopes emit
characteristic gamma photons that can be detected through gamma spectroscopy.The original total
activity ofthe adsorbed radon was calculated from these gamma ray measurements using calibration
factors derived from cross-calibration of standard sources containing known total activities of
radium-226 with geometry identical to the counted samples and from the principles of radioactive
decay.
After 24 hours,the exposed charcoal was transfen-ed to a sealed plastic sample container (to prevent
radon loss and further exposure during transport),identified and labeled,and transported to the Tellco
laboratory in Grand Junction,Colorado for analysis.Upon completion of on-site activities,the field
equipment was alpha-and beta-gamma scanned for possible contamination resulting from fieldwork
activities.All field equipment was surveyed by Denison Mines Radiation Safety personnel and
released for unrestricted use.Tellco personnel maintained custody of the samples from collection
through analysis.
5.FIELD OPERATIONS
5.1 Equipment Preparation
All charcoal was dried at 110°C before use in the field.Unused charcoal and recycled charcoal were
treated the same.l80-gram aliquots ofdried charcoal were weighed and placed in sample containers.
Proper balance operation was verified daily by checking a standard weight.The balance readout
agreed with the known standard weight to within ±0.1 percent.(Appendix A).
2
After acceptable balance check,empty containers were individually placed on the balance and the
scale was re-zeroed with the container on the balance.Unexposed and dried charcoal was carefully
added to the container until the readout registered 180 grams.The lid was immediately placed on the
container and sealed with plastic tape.The balance was checked for readout drift between readings.
Sealed containers with unexposed charcoal were placed individually in the shielded counting well,
with the bottom of the container centered over the detector,and the background count rate was
documented.Three five-minute background counts were conducted on ten percent ofthe containers,
selected at random to represent the "batch".If the background counts were too high to achieve an
acceptable lower limit ofdetection (LLD),the entire charcoal batch was labeled non-confOlIDing and
recycled through the heating/drying process.
5.2 Sample Locations,Identification,and Placement
Designated sample point locations were established within each region.A sample identification
number (lD)was assigned to every sample point,using a sequential alphanumeric system indicating
the charcoal batch and physical location within the region (e.g.,AOl ...AlOO).This lD was written on
an adhesive label and affixed to the top ofthe canister.The sample ID,date,and time ofplacement
were recorded on the radon flux measurements data sheets for the set ofone hundred measurements.
The sampling locations were spread out throughout each region.Prior to placing a canister at each
sample location,the retaining ling,screen,and foam pad of each canister were removed to expose the
charcoal support grid.A pre-measured charcoal charge was selected from a batch,opened and
distributed evenly across the support grid.The canister was then reassembled and placed face down
on the surface at each sampling location.Care was exercised not to push the device into the soil
surface.The canister lim was "sealed"to the surface using a berm oflocal bon-ow material.
Five canisters (blanks)for each region were similarly processed and the canisters were kept inside an
airtight plastic bag during each 24-hour testing period.
5.3 Sample Retrieval
At the end of the 24-hour testing period,all canisters were disassembled and each sample was
individually poured through a funnel into a container.Identification numbers were transferred to the
appropriate container,which was sealed and placed in a box for transport.Retrieval date and time
were recorded on the same data sheets as the sample placement infonnation.The blank samples were
similarly processed.
5.4 Environmental Conditions
A rain gauge and a minimum/maximum thennometer were in place at Denison Mines'site to monitor
rainfall and air temperatures during sampling in order to ensure compliance with the regulatory
measurement criteria.
3
In accordance with 40 CFR,PaIi 61,Appendix B,Method 115:
•Measurements were not initiated within 24 hours ofrainfall.
•No rainfall occurred during any ofthe sampling peliods.
e None of the radon measurements presented in this report were performed dming
temperatures below 35°F or on frozen ground (the minimum air temperature recorded at
the site during the collection periods was 39°F).
6.SAMPLE ANALYSIS
6.1 Apparatus
Apparatus used for the analysis:
•Single-or multi-channel pulse height analysis system,Ludlum Model 2200 with a
Teledyne 3"x 3"sodium iodide,thallium-activated (NaI(Tl))detector.
e Lead shielded counting well approximately 40 cm deep with 5-cm thick lead walls and a 7-
cm thick base and 5 cm thick top.
e National Institute ofStandards and Technology (NIST)traceable aqueous solution radium-
226 absorbed onto 180 grams ofactivated charcoal.
e Ohaus Model C501 balance with OJ-gram sensitivity.
6.2 Sample Inspection and Documentation
Once in the laboratory,the integrity ofeach charcoal container was verified by visual inspection ofthe
plastic container.Laboratory staff documented damaged or unsealed containers and verified that the
data sheet was complete.
One sample (C39)was lost in the field due to charcoal spillage.All of the remaining 399 sample
containers received and inspected at the Tellco analytical laboratory were verified as valid.
6.3 Background and Sample Counting
The gamma ray counting system was checked daily,including background and radium-226 source
measurements plior to and after each counting session.Based on calibration statistics,using two
sources with known radium-226 content,background and source control limits were established for
each Ludlum/Teledyne counting system with shielded well (see Appendix A).
Gamma ray counting ofexposed charcoal samples included the following steps:
•The length of count time was detem1ined by the activity of the sample being analyzed,
according to a data quality objective ofa minimum of 1,000 accrued counts for any given
sample.
4
•The sample container was centered on the NaI detector and the shielded well door was
closed.
•The sample was counted over a determined count length and then the mid-sample count
time,date,and gross counts were documented on the radon flux measurements data sheet
and used in the calculations.
•The above steps were repeated for each exposed charcoal sample.
•Approximately 10 percent of the containers counted were selected for recounting.These
containers were recounted within a few days following the original count.
7.QUALITY CONTROL (QC)AND DATA VALIDATION
Charcoal flux measurement QC samples included the following intra-laboratory analytical frequency
objectives:
•Blanks,5 percent,and
•Recounts,10 percent
All sample data were subjected to validation protocols that included assessments of sensitivity,
precision,accuracy,and completeness.All method-required data quality objectives (EPA,2008)were
attained.
7.1 Sensitivity
A total offifteen blanks were analyzed by measuring the radon progeny activity in samples subjected
to all aspects of the measurement process,excepting exposure to the source region.These blank
sample measurements comprised approximately 5 percent of the field measurements.The results of
the blank sample radon flux rates ranged from less than 0.01 to 0.04 pCi/m2-s,with an average of
approximately 0.03 pCi/m2-so
7.2 Precision
Thirty recount measurements,distributed throughout the sample sets,were performed by replicating
analyses of individual field samples (see Appendix B).These recount measurements complised
approximately 10 percent of the total number of samples analyzed.The precision of all recount
measurements,expressed as relative percent difference (RPD),ranged from less than 1 percent to 22.2
percent with an overall average precision of approximately 3.3 percent.
7.3 Accuracy
Accuracy offield measurements was assessed daily by counting two laboratory control samples with
known Ra-226 content.Accuracy of these lab control sample measurements,expressed as percent
bias,ranged from approximately -3.8 percent to +1.4 percent.The mithmetic average bias ofthe lab
control sample measurements was approximately +0.4 percent (see Appendix A).
5
7.4 Completeness
All 100 samples from the Cell 2 Region were verified,representing 100 percent completeness for that
regIOn.
All 100 the samples from the Cell 3 Beaches region were verified,representing 100 percent
completeness for that region.Ninety-nine of the samples from the Cell 3 Covered Region were
verified,representing 99 percent completeness for that region.
Altogether,399 samples fi'om the total 400 sample locations were verified during this sampling
program,representing 99.8 percent completeness overall.
8.CALCULATIONS
Radon flux rates were calculated for charcoal collection samples using calibration factors derived
from cross-calibration to sources with known total activity with identical geometry as the charcoal
containers.A yield efficiency factor was used to calculate the total activity ofthe sample charcoal
containers.Individual field sample result values presented were not reduced by the results ofthe field
blank analyses.
In practice,radon flux rates were calculated by a database computer program.The algorithms utilized
by the data base program were as follows:
Equation 8.1:
pCi Rn-222/m2sec =[Ts*A*b*~.5(dJ91.75)]
where:N =net sample count rate,cpm under 220-662 keY peak
Ts =sample duration,seconds
b =instrument calibration factor,cpm per pCi;values used:
0.1714,forM-01/D-21 and
0.1720,for M-02/D-20
d =decay time,elapsed hours between sample mid-time and count mid-time
A =area ofthe canister,m2
Equation 8.2:
Gross Sample,cpm Background Sample,cpm0-__0_______+
SampleCount,t,min Background Count,t,minError,20-=2X --'---------''------------------X Sample Concentration
Net ,cpm
6
Equation 8.3:
_2.71 +(4.65)(Sb2
LLD -[Ts*A*b*0.5(dJ9T75)]
where:2.71 =constant
4.65 =confidence interval factor
Sb =standard deviation ofthe background count rate
Ts =sample duration,seconds
b =instrument calibration factor,cpm per pei;values used:
0.1714,forM-01/D-21 and
0.1 720,for M-02/D-20
d =decay time,elapsed hours between sample mid-time and count mid-time
A =area ofthe canister,m2
9.RESULTS
9.1 Mean Radon Flux
Referencing 40 CFR,Part 61,Subpart W,Appendix B,Method 115 -Monitoring for Radon-222
Emissions,Subsection 2.1.7 -Calculations,"the mean radon flux for each region of the pile and for
the total pile shall be calculated and reported as follows:
(a)The individual radon flux calculations shall be made as provided in Appendix A EPA
86(1).The mean radon flux for each region ofthe pile shall be calculated by summing all
individual flux measurements for the region and dividing by the total number of flux
measurements for the region.
(b)The mean radon flux for the total uranium mill tailings pile shall be calculated as follows:
At
Where:Js =Mean flux for the total pile (pCi/m2-s)
Ji =Mean flux measured in region i (pCi/m2-s)
Ai =Area ofregion i (m2)
At =Total area ofthe pile (m2)
2.1.8 Reporting.The results of individual flux measurements,the approximate
locations on the pile,and the mean radon flux for each region and the mean radon flux for the total stack
[pile]shall be included in the emission test report.Any condition or unusual event that occurred during
the measurements that could significantly affect the results should be reported."
7
9.2 Site Results
Site Specific Sample Results (reference Figure 2 and Appendix C)
(a)The mean radon flux for each region within the site as follows:
Cell 2 -Cover Area
Cell 3 -Cover Area
-Beach Areas
-Standing Liquid
3.9 pCi/m2-s (based on 270,624 m2 area)
=5.5 pCi/m2-s (based on 147,251 m2 area)
12.2 pCi/m2-s (based on 66,536 m2 area)°pCi/m2-s (based on 75,071 m2 area)
Note:Reference Appendix C ofthis report for the entire summary ofindividual measurement results.
(b)Using the data presented above,the calculated mean radon flux for each cell (pile)is,as follows:
Cell 2 =3.9 pCi/m2-s
(3.9)(270,624)
270,624
Cell 3 =3.1 pCi/m2-s
(5.5)(147,251)+(12.2)(66,536)+(0)(75,071)
288,858
As shown above,the arithmetic mean radon flux for the each cell at Denison Mines'White Mesa
milling facility is below the NRC and EPA standard of20 pCi/m2-so No condition or unusual event
occurred during the measurements that could significantly affect the reported results.Appendix C is
a summaJy ofindividual measurement results,including blank sample analysis.Sample locations are
depicted on Figure 2,which is included in Appendix D.The map was produced by Tellco.
8
References
U.S.Environmental Protection Agency,Radon Flux Measurements on Gardinier and Royster
Phosphogypsum Piles Near Tampa and Mulberry,Florida,EPA 520/5-85-029,NTIS #PB86-
161874,January 1986.
U.S.Environmental Protection Agency,Title 40,Code ofFederal Regulations,February 2008.
U.S.Nuclear Regulatory Commission,Radiological Ejjluent and Environmental Monitoring at
Uranium Mills,Regulatory Guide 4.14,April 1980.
U.S.Nuclear Regulatory Commission,Title 10,Code ofFederal Regulations,Part 40,Appendix A,
January 2008.
9
Figure 1
Large Area Activated Charcoal Canisters Diagram
Handle 1/4-in.Vent Hole l-in.Thick
Scrubber Pad
1/2-in.Thick
Scrubber Pad
1/2',0 Thick Charcoal
Support \3rid
10-in.dia
PVC End Cap
FIGURE
10
Large-Area Radon Collector
Appendix A
Charcoal Canister Analyses Support Documents
A
BALANCE OPERATION DAILY CHECK
Balance Model:0 hOI.\,(')~or+-0 -t\rt:tWl 5"}Jt 12.3 0 7
Standard Weight (g):__2.._0_0_,o_'j-:+-_
Date Pre-check (g)Post-check (g)O.K.to.1 %?By
f.t/14--1 Of,2-00·0 200.D y-e '5 VL~rJ
(pItS /06
v
2 0 0.D 7_00.D Y-e:-s DL~
e;!/(p!OB I
200,0 "7-00.D 'f -e.5 Vl~J~A"-'t'
I
DENISON MINES (USA)CORPORATION
WHITE MESA MILL,BLANDING,UTAH
2008 NESHAPs RADON FLUX MEASUREMENTS
CELLS 2 &3
ACCURACY APPRAISAL TABLE
SYSTEM DATE Bkg Counts (1 min.each)Source Counts (1 min.each)AVG NET YIELD FOUND SOURCE KNOWN %BIAS
I.D.#1 #2 #3 #1 #2 #3 cpm cpm/pCi pCi ID pCi
M-01/D-21 6/14/2008 131 115 131 10040 9793 9889 9782 0.1714 57069 GS-04 59300 -3.8%
M-01/D-21 6/14/2008 150 141 136 10203 9969 10041 9929 0.1714 57927 GS-04 59300 -2.3%
M-01/D-21 6/15/2008 133 134 134 10368 10227 10229 10141 0.1714 59166 GS-04 59300 -0.2%
M-01/D-21 6/15/2008 138 135 142 10327 10213 10268 10131 0.1714 59107 GS-04 59300 -0.3%
M-01/D-21 6/16/2008 130 126 147 10176 10196 10379 10116 0.1714 59020 GS-04 59300 -0.5%
M-01/D-21 6/16/2008 123 136 121 10277 10282 10329 10169 0.1714 59331 GS-04 59300 0.1%
M-01/D-21 6/14/2008 131 115 131 10558 10344 10385 10303 0.1714 60113 GS-05 59300 1.4%
M-01/D-21 6/14/2008 150 141 136 10307 10209 10254 10114 0.1714 59010 GS-05 59300 -0.5%
M-01/D-21 6/15/2008 133 134 134 10316 10403 10271 10196 0.1714 59489 GS-05 59300 0.3%
M-01/D-21 6/15/2008 138 135 142 10298 10165 10138 10062 0.1714 58705 GS-05 59300 -1.0%
M-01/D-21 6/16/2008 130 126 147 10454 10263 10369 10228 0.1714 59671 GS-05 59300 0.6%
M-01/D-21 6/16/2008 123 136 121 10265 10447 10434 10255 0.1714 59833 GS-05 59300 0.9%
M-02/D-20 6/14/2008 133 164 94 10315 101a5 10110 10073 0.1720 58564 GS-04 59300 -1.2%
M-02/D-20 6/14/2008 138 122 125 10109 10046 10272 10014 0.1720 58221 GS-04 59300 -1.8%
M-02/D-20 6/15/2008 119 109 119 10347 10349 10342 10230 0.1720 59479 GS-04 59300 0.3%
M-02/D-20 6/15/2008 124 120 109 10439 10333 10254 10224 0.1720 59444 GS-04 59300 0.2%
M-02/D-20 6/16/2008 120 151 134 10310 10140 10208 10084 0.1720 58630 GS-04 59300 -1.1%
M-02/D-20 6/16/2008 143 140 139 10276 10211 10401 10155 0.1720 59043 GS-04 59300 -0.4%
M-02/D-20 6/14/2008 133 164 94 10324 10224 10384 10180 0.1720 59188 GS-05 59300 -0.2%
M-02/D-20 6/14/2008 138 122 125 10288 10370 10344 10206 0.1720 59335 GS-05 59300 0.1%
M-02/D-20 6/15/2008 119 109 119 10305 10509 10222 10230 0.1720 59475 GS-05 59300 0.3%
M-02/D-20 6/15/2008 124 120 109 10424 10358 10296 10242 0.1720 59545 GS-05 59300 0.4%
M-02/D-20 6/16/2008 120 151 134 10272 10355 10349 10190 0.1720 59246 GS-05 59300 -0.1%
M-02/D-20 6/16/2008 143 140 139 10341 10261 10375 10185 0.1720 59215 GS-05 59300 -0.1%
AVERAGE PERCENT BIAS FOR ALL ANALYTICAL SESSIONS:-0.4%
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION:._W~_~--,-'_\-\-<.._---:..fv\~-e-~>:-":--~tv\~'\_\\~_
CLIENT:.b_-e.-=--V\:-·t.--:S.--:Ov1=-=-:._~~-=--I_I"\._.e-_._S _C..::...lA--=5:.......·A~0L.-_C=O......:r'-1P~._
SystemID:tvl-O?->/D·-"2.0
I
Calibration Check Log
Calibration Date:Co /0 S-/O<D Due Date:~los/0-,
Blank Canister Bkgd.Range,cpm:2 a =__9.L-'..1__to V7 I
Scaler SIN:5 I S (0"3
Detector SIN:t>4 LS '3>2.
Gross Source Range,cpm:
High Voltage:43 ('/0 Window:
~-2'L{J
Source ID/SN:G-S -(0 4-
3a=
2a=(0032 to \05'"3L.3a=
Technician:J2L ~
4.42 Thrshld:2.20
Source Activity:sg·3 k f?(:
'71 to 10.
0)'1 D'7 to'0{£;57
?~
~f;t-
tV'(..
PfO<)l-pre.
fost-
All counts times are one minute
Date By Backg ound Counts (l min.each)Source Counts (l min.each)ok?
#1 #2 #3 Avg.#1 #2 #3 Average YIN
(P(/.A-Je.p,l)~13"1.,1("4-04-1').,0 \°'31$"It>\'O<:lot 10 10;2.,03 V
1/.,./1.4-1cJ'I)J...,"'-11_••\38>1"2-"2-I:-.£..<"p ..g lID lOO)looli (02."7 '2-\0142 -I
!t;,}u<;!o8 b/r.,I.\~IA?"!i \6)Ill,o i034-.,lO34Q TD ~.{'"2..t034-lP y
I~IS otE:.ML~(2.,4-l2.0 IO~I I t'>ltO",~/q L°'"33"7,l 0 '"2.S""'4-\0342-Y
".(Vi o{'j I:Y.1 ..1_\'20 \"I VJ,4 1':2,5 \~31<O In i40 1.t""l2nA.10 2/0)V
1!lIlt~/of3 ~y..143 \1.0 t~q 14J I02.7~1.o"L-1 ('Mol I029(P y
YIN:Y =average background and source cpm falls within the control limits.
N =average background and source cpm does not fall within the controlliinits.
The acceptable ranges were determined from prior background and source check data.
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION:_vJ-"-.-'----'~___"____;k-=-_M_e_s_"'\_----"~_~_L_fl _
CLIENT:_J:)-'..L---"-i!?.-_l'l:.-"-=.5--,,-'O--"-h--'---'tJ\_---=-_~_V'\-.ec:=-S_.-'>(_U_S_A-L)_C_O_'-t-f_'_
Due Date:Ci 0 S-IDC')
Calibration Check Log
Calibration Date:vioS!0 B
8 0 D Window:4.42 Thrshld:2.20
Al>\-2Z.1..,
Detector SIN:__l?_4_·"_l6_·~_·L...Source ID/SN:_G-=--..cS"'----=O:-5.L-Source Activity:5q •'3 K ~;
Blank Canister Bkgd.Range,cpm:2 cr =q_'_I__to __1_7__'__3 0 =__7_1__to __'_~_}__
System ID:---,-~_-_O_'_2---L/_b-==--_-_2_0_'__
Scaler SIN:__b_"'_S_{p_3 High Voltage:
Gross Source Range,cpm:20=10154 to 104:>/B
Technician:YL--.,tZ,q c------y
30=IOD3B to ID734
All counts times are one minute
Date By Background Counts (l min.each)Source Counts (l min.each)ok?
#1 #2 #3 Avg.#1 #2 #3 Average YIN
f:.?/14-/0.g ....1r.I ~?,I (~+V'l4-t30 1032A-102.7_4-10'3,&4 10311 Y~0lc4-1&f>r:Y1J".L'1-;6 1'2.'2-f2c-:)12.e t,02-~IA"3"'10 to:.4-~10'334-Y(PI ~610f'>'")1...~n,..I IOJ lOOl \IOj /tip \.03QS'IOsoq ID2-:L"2.-\0 34,s'Y
I-vit1S{0 €>..,t(;,.,1.\2.4--\ZO (00)lie llD4-"2...-+V03'S8 Lo""30 (p 1035'1 V
~Jt(Pjo t6 1)1 e~,\2...0 L<;"1 l34-\35'l'Oz..1'"2 lt03<;C:;-l,O 7>4 ~103'2-5 'Y
(p/1~/OB [YJ r.......,.&:>""t40 I~O\14/LO~4--J v02-t,.\f,037.~\ 0 ~2-.Ip 'y
p~
pos
pre.-
pos
~r<.
~O$+-
YiN:Y =average background and source cpm falls within the control limits.
N =average background and source cpm does not fall within the control limits.
The acceptable ranges were determined from prior background and source check data.
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION:\N ~~t--e tv\.e.~fA.tv\.~\\
CLIENT:DeVl'~SO"""i'J\~~s [USA)Corf'
System ID:_""_-_0_'-'.-1_L./_-_'""2....----','---_
Calibration Check Log
Calibration Date:(ploof of)Due Date:_fb-'~=___o_6I_"Z=___oO)___'__
\100 30'=
High Voltage:ll50 Window:4.42 ThrsWd:2.20
(l..,0'1-22--fc
Source ID/SN:_G------:;:5_-_0=---.:4-:--Source Activity:Sq,"3 K pC
0)'I to II L.\ \ 0 toBlankCanisterBkgd.Range,cpm:2 cr =
Scaler SIN:5\5",'J-.
Detector SIN:0 4 I 5 "3 "3
Gross Source Range,cpm:2 0'=OJ 6 ~t.to \0 Co 4-2
Technician::PC--.~
3 cr =_O)_&_O}_._"2..__to I0 6 j 2
All counts times are one minute
Date By Backg ound Counts (I min.each)Source Counts(1 min.each ok?
#1 #2 #3 Avg.#1 #2 #3 Average YIN
1&l41 016 )/Ln 1?.i \\~131 17 L.\0OJ\{)(.\10)3 t?J ~~O\QQo'7 y
~(p (4-06 '("]111,....1:>0 \4-J I ?,(p 14-:z.10203 O\OICA 1004 1 1007 J Y
I(P,I5J oB 1\,I"~\~3 \"34 134-134-\O3(",~\I)L""2..:;IO?'2-O(10"2-75 Y
41 t5"leJf6 ~t""\.3~l ""3 '5 l4-z.\35 \~'"2.'2-"\.0 '2..-(-:l I o7.-~~10-;2.(.,0}y
(P!lI~/()p,"")/~..i~o 12.(;141 \34 I a{-z ~to\O)v I!O""""7~I o?-50 y
(;f,..7 of,"01".,1~{23 1'"3 {p \""l-\14""1 I 02?'1 I M2..-taA-."0~.--:z..o.,O?0 (p ..,
t>l"e..
~
?f'€..
P07t-
F'~
'T'<Y:t-
YIN:Y =average background and source cpmfalls within the control limits.
N =average background and source cpm does not fall within the control limits.
The acceptable ranges were determined from prior background and source check data.
CHARCOAL CANISTERANALYSIS SYSTEM
COl?,CLIENT:U evtI SO,=,
SITE LOCATION:_-!yJ,-,--h,-,-,-~k~---,-M-,--e--=---5_iA..__Jv\-,-:_\_I _
(lASA)
System ID:tv'\.-0'/D'-2.\
Calibration Check Log
Calibration Date:c:,Loslo 6
Scaler SIN:__=-5~\S=:<_I_"J-High Voltage:l \50 Window:'-'Cl.-2.7-(p
Detector SIN:_0><:-4-'-<-.::1-"'5""--'3:.-3=---Source ID/SN:G-S -0 S-
Due Date:(p!06'/()OJ
4.42 Thrshld:2.20
Source Activity:Se::,,'6 K pL';
Blank CanisterBkgd.Range,cpm:2 u = \I 0 3 u =__0-'--'-'1'-----_to __1_7~-z..=__
Gross Source Range,cpm:2u=100 B 0 to IOS0C)3 u=0'"150
Technician:1:)L
to I07Z9
All counts times are one minute
Date By
-pH-(,/1+1 a'&;:-yJr
fl o*~/l+1 0'0 ihll'.~,r (iJ I i-s-I ov:lInJ /'
fo.:;,t-IW'5""/0 e,I:>Lf",,"M..
'r.f'.e..~l(P1 "e ME..••
\,o,:>'rl (oJI bfcp e 1t?1J/:
I
Background Counts (1 min.each)Source Counts'(l min.each)
#1 #2 #3 Avg.#1 #2 #3
\")(,\6 t"3 I \Z-(..I 05513 lOJ,4-~\0"3 rz,.c;
\,'5V 14-1 \--:l,t,.,\4""2.t\?'~o7 l020C'i lo7..~+-
\7:.3 \'7,J-1'34-1-:1,4-IO-:;Ll.l \040-3 lD'Z.'1(
\~tO lJ>~t4'1--l"38 1.0""2.."16 10((..,5 lOI~
no l2y 14,13t}-iI9.dc4-\O.2.~'3 103(oG
\J....~1~'"f?\'12-1 lD"U.PS-I 044-1 I 04~4
Average
ID42q
\O-z"S7
\0330
I 0:z..00
~o '3 (;,2-
\03B1-
ok?
YIN
'!
y
y
y
'!
''I
YIN:Y =average background and source cpmfalls within the control limits.
N =average background and source cpmdoes not fall within the control limits.
The acceptable ranges were detemrined from priorbackground and source check data.
Appendix B
Recount Data Analyses
B
CLIENT:DENISON MINES PROJECT:RADON FLUX MEASUREMENTS,WHITE MESA MILL PROJECT NO.:08004.00
PILE:3 BATCH:A SURFACE:TAILINGS AIR TEMP MIN:43°F WEATHER:NO RAIN
AREA:BEACH DEPLOYED:6 9 8 RETRIEVED:6 10 8 CHARCOAL BKG:144 cpm Wt.Oul:180.0 g,
FIELD TECHNICIANS:MG,CS,DLC COUNTED BY:DLC DATA ENTRY BY:DLC TARE WEIGHT:29.2 g.
COUNTING SYSTEM 1.0.:M01/D21,M02/D20 CAL.DUE:6/05/09
RECOUNT CANISTER ANALYSIS:
•G-.....",".'.a'....•
A10 A10 8 24 8 49 6 14 8 13 19 1 1911 220.2 5,2 0.5 0.05
AI0 AI0 8 24 8 49 6 15 8 8 11 1 1610 220.2 5.0 0.5 0.06 3,9%
A20 A20 8 35 8 54 6 14 8 13 29 1 3819 219,6 10.9 1.1 0.05
A20 A20 8 35 8 54 6 15 8 8 11 1 3397 219.6 11.1 1.1 0.06 1.8%
A30 A30 8 45 8 59 6 14 8 13 37 1 14613 222.9 43,0 4,3 0,05
A30 A30 8 45 8 59 6 15 8 8 12 1 12630 222,9 42.8 4.3 0.06 0.5%
A40 A40 8 55 9 4 6 14 8 13 47 1 2954 229.0 8.4 0.8 0.05
A40 A40 8 55 9 4 6 15 8 8 12 1 2599 229.0 8.4 0.8 0,06 0,0%
A50 A50 9 5 9 9 6 14 8 13 53 1 3449 218.9 9.9 1.0 0,05
A50 A50 9 5 9 9 6 15 8 8 14 1 3066 218.9 10.1 1.0 0.06 2.0%
A60 A60 9 15 9 14 6 14 8 14 7 2 1600 222.7 2.0 0.2 0.05
A60 A60 9 15 9 14 6 15 8 8 15 2 1466 222.7 2.0 0.2 0,06 0.0%
A70 A70 9 22 9 20 6 14 8 14 16 1 4666 220,2 13.6 1.4 0,05
A70 A70 9 22 9 20 6 15 8 8 17 1 4043 220.2 13.5 1.4 0.06 0.7%
A80 A80 9 27 9 31 6 14 8 14 25 1 1469 225.6 4.0 0.4 0.05
A80 A80 9 27 9 31 6 15 8 8 17 1 1288 225,6 3,9 0.4 0.06 2.5%
A90 A90 9 34 9 36 6 14 8 14 38 2 1301 225.7 1.5 0.2 0,05
A90 A90 9 34 9 36 6 15 8 8 18 2 1206 225.7 1.6 0.2 0.06 6.5%
A100 A100 9 41 9 41 6 14 8 14 53 1 4569 223.5 13.3 1.33 0.05
AIOO A100 9 41 9 41 6 15 8 8 18 1 3936 223.5 13,a 1.30 0.06 2,3%
AVERAGE PERCENT PRECISION FOR THE CELL 3 BEACHES REGION:2.0%
Page 1 of 1
CLIENT:DENISON MINES PROJECT:RADON FLUX MEASUREMENTS,WHITE MESA MILL PROJECT NO.:08004.00
g.
g.
180.0
29.2
WEATHER:NO RAIN
cpm Wt.Out:
TARE WEIGHT:
144
AIR TEMP MIN:51°F
11 8 CHARCOAL BKG:
DATA ENTRY BY:DLC
6
SURFACE:SOIL
6 10 8 RETRIEVED:
COUNTED BY:DLC
CAL.DUE:6/05/09
PILE:2 BATCH:B
AREA:COVER DEPLOYED:
FIELD TECHNICIANS:MG,CS,DLC
COUNTING SYSTEM I.D.:M01/D21,M02/D20
RECOUNT CANISTER ANALYSIS:
B20 B20 11 29 12 4 6 14 8 10 23 1 1020 210.7 2.0 0.2 0.04
B20 B20 11 29 12 4 6 15 8 8 21 2 1853 210.7 2.2 0.2 0.05 9.5%
B30 B30 11 40 11 54 6 14 8 10 42 1 1247 211.0 2.6 0.3 0.04
B30 B30 11 40 11 54 6 15 8 8 22 1 1129 211.0 2.8 0.3 0.05 7.4%
B40 B40 11 30 12 4 6 14 8 10 56 5 1001 215.8 0.1 0.0 0.04
B40 B40 11 30 12 4 6 15 8 8 24 6 1156 215.8 0.1 0.0 0.05 0.0%
B50 B50 12 0 12 22 6 14 8 11 17 5 1210 209.6 0.2 0.0 0.04
B50 B50 12 0 12 22 6 15 8 8 28 5 1150 209.6 0.2 0.0 0.05 0.0%
B60 B60 11 50 12 12 6 14 8 11 37 5 1100 212.1 0.2 0.0 0.04
B60 B60 11 50 12 12 6 15 8 8 29 5 1154 212.1 0.2 0.0 0.05 0.0%
B70 B70 12 20 12 21 6 14 8 11 58 3 1193 216.0 0.6 0.1 0.04
B70 B70 12 20 12 21 6 15 8 8 33 3 1074 216.0 0.6 0.1 0.05 0.0%
B80 B80 12 30 12 42 6 14 8 12 18 4 1052 216.5 0.3 0.0 0.04
B80 B80 12 30 12 42 6 15 8 8 34 4 1008 216.5 0.3 0.1 0.05 0.0%
B90 B90 12 40 12 42 6 14 8 12 39 6 1137 207.1 0.1 0.0 0.04
B90 B90 12 40 12 42 6 15 8 8 40 6 1077 207.1 0.1 0.0 0.05 0.0%
BI00 BI00 12 51 12 52 6 14 8 13 5 4 1251 219.4 0.4 0.05 0.04
BI00 B100 12 51 12 52 6 15 8 8 39 4 1249 219.4 0.5 0.06 0.05 22.2%
AVERAGE PERCENT PRECISION FOR THE CELL 2 COVERED REGION:4.6%
Page 1 of 1
CLIENT:DENISON MINES PROJECT:RADON FLUX MEASUREMENTS,WHITE MESA MILL PROJECT NO,:08004,00
PILE:3 BATCH:C SURFACE:SOIL AIR TEMP MIN:39°F WEATHER:NO RAIN
AREA:COVER DEPLOYED:6 11 8 RETRIEVED:6 12 8 CHARCOAL BKG:147 cpm Wt.Out:180,0 g.
FIELD TECHNICIANS:MG,CS,DLC COUNTED BY:DLC DATA ENTRY BY:DLC TARE WEIGHT:29.2 g.
COUNTING SYSTEM 1.0.:M01/D21,M02/D20 CAL.DUE:6/05/09
RECOUNT CANISTER ANALYSIS:
•.•........10 I'........••0
C10 C10 15271527 615 8 14 51 1 21478 220.2 51.2 5.1 0.04
RECOUNT C10 15271527 6168 9 10 1 18684 220.2 51.3 5.1 0.05 0.2%
C20 C20 15 35 15 32 6 15 8 14 57 1 2021 225.4 4.5 0.5 0.04
RECOUNT C20 15 35 15 32 6 16 8 9 10 1 1840 225.4 4.7 0.5 0.05 4.3%
C30 C30 14 34 14 32 6 15 8 15 17 3 1288 223.1 0.69 0.1 0.04
RECOUNT C30 14341432 616 8 9 13 3 1188 223.1 0.70 0.1 0.05 1.4%
C40 C40 14 41 14 37 6 15 8 15 40 2 1309 218.6 1.2 0.1 0.04
RECOUNT C40 14 41 14 37 6 16 8 9 12 2 1201 218.6 1.3 0.1 0.05 8.0%
C50 C50 14 46 14 42 6 15 8 15 59 3 1470 213.5 0.84 0.1 0.04
RECOUNT C50 14 46 14 42 6 16 8 9 17 3 1352 213.5 0.85 0.1 0.05 1.2%
C60 C60 14 52 14 51 6 15 8 16 19 3 1131 214.5 0.56 0.1 0.04
RECOUNT C60 14 52 14 51 6 16 8 9 17 3 1047 214.5 0.56 0.1 0.05 0.0%
C70 C70 1457 14 56 615 8 16 34 2 1225 222.4 1.1 0.1 0.04
RECOUNT C70 14 57 14 56 6 16 8 9 20 2 1008 222.4 1.0 0.1 0.05 9.5%
C80 C80 15 3 15 5 6158 1649 2 1772 219.6 1.8 0.2 0.04
RECOUNT C80 15 3 15 5 6 16 8 9 20 2 1564 219.6 1.8 0.2 0.05 0.0%
C90 C90 15 9 15 10 6 15 8 17 7 1 4788 216.7 11.4 1.1 0.04
RECOUNT C90 15 9 1510 616 8 9 22 1 4022 216.7 10.8 1.1 0.05 5.4%
C100 C100 15 17 15 15 6 15 8 17 25 1 14217 216.9 34.6 3.46 0.04
RECOUNT C100 1517 15 15 616 8 9 22 1 12468 216.9 34.1 3.41 0.05 1.5%
AVERAGE PERCENT PRECISION FOR THE CELL 3 COVERED REGION:3.2%
Page 1 of 1
Appendix C
Radon Flux Sample Laboratory Data (including Blanks)
c
CLIENT:DENISON MINES PROJECT:RADON FLUX MEASUREMENTS,WHITE MESA MILL PROJECT NO.:08004.00
g.
g.
180.0
29.2
WEATHER:NO RAIN
cpm WI.Out:
TARE WEIGHT:
144
AIR TEMP MIN:43°F
10 8 CHARCOAL BKG:
DATA ENTRY BY:DLC
6
SURFACE:TAILINGS
6 9 8 RETRIEVED:
COUNTED BY:DLC
CAL.DUE:6/05/09
PILE:3 BATCH:A
AREA:BEACH DEPLOYED:
FIELD TECHNICIANS:MG,CS,DLC
COUNTING SYSTEM I.D.:M01/D21,M02/D20
AOl AOl 8 15 8 45 6 14 8 13 10 1 1675 226.3 4.5 0.5 0.05
A02 A02 8 16 8 45 6 14 8 13 10 1 3135 222.1 8.8 0.9 0.05
A03 A03 8 17 8 46 6 14 8 13 11 1 7810 217.0 22.6 2.3 0.05
A04 A04 8 18 8 46 6 14 8 13 11 1 2395 228.6 6.6 0.7 0.05
A05 A05 8 19 8 47 6 14 8 13 14 4 1281 229.0 0.5 0.1 0.05
A06 A06 8 20 8 47 6 14 8 13 14 3 1172 228.2 0.7 0.1 0.05
A07 A07 8 21 8 48 6 14 8 13 17 1 11977 221.5 34.9 3.5 0.05
A08 A08 8 22 8 48 6 14 8 13 17 2 1276 229.2 1.5 0.1 0.05
A09 A09 8 23 8 49 6 14 8 13 19 1 1181 229.3 3.1 0.3 0.05
AI0 AI0 8 24 8 49 6 14 8 13 19 1 1911 220.2 5.2 0.5 0.05
All All 8 25 8 50 6 14 8 13 20 1 9686 223.8 28.2 2.8 0.05
A12 A12 8 26 8 50 6 14 8 13 20 1 10948 216.2 31.9 3.2 0.05
AU A13 8 27 8 51 6 14 8 13 21 1 4501 221.8 12.9 1.3 0.05
A14 A14 8 28 8 51 6 14 8 13 21 1 2413 220.0 6.7 0.7 0.05
A15 A15 8 29 8 52 6 14 8 13 23 1 5541 221.3 16.0 1.6 0.05
A16 A16 8 30 8 52 6 14 8 13 23 1 3788 226.2 10.8 1.1 0.05
A17 A17 8 31 8 53 6 14 8 13 24 1 1376 222.5 3.6 0.4 0.05
A18 A18 8 32 8 53 6 14 8 13 26 4 1156 227.6 0.4 0.1 0.05
A19 A19 8 33 8 54 6 14 8 13 29 1 1072 229.7 2.8 0.3 0.05
A20 A20 8 35 8 54 6 14 8 13 29 1 3819 219.6 10.9 1.1 0.05
A21 A21 8 36 8 55 6 14 8 13 30 1 3209 219.7 9.1 0.9 0.05
A22 A22 8 37 8 55 6 14 8 13 30 1 10385 219.6 30.3 3.0 0.05
A23 A23 8 38 8 56 6 14 8 13 31 1 3586 189.1 10.2 1.0 0.05
A24 A24 8 39 8 56 6 14 8 13 32 2 1052 221.7 1.1 0.1 0.05
A25 A25 8 40 8 57 6 14 8 13 33 1 13424 215.5 39.5 3.9 0.05
A26 A26 8 41 8 57 6 14 8 13 34 1 19915 216.5 58.6 5.9 0.05
A27 A27 8 42 8 58 6 14 8 13 35 2 1623 219.6 2.0 0.2 0.05
A28 A28 8 43 8 58 6 14 8 13 36 1 2500 218.3 7.0 0.7 0.05
A29 A29 8 44 8 59 6 14 8 13 37 1 3171 222.7 9.0 0.9 0.05
A30 A30 8 45 8 59 6 14 8 13 37 1 14613 222.9 43.0 4.3 0.05
A31 A31 8 46 9 0 6 14 8 13 39 1 7400 219.6 21.6 2.2 0.05
A32 A32 8 47 9 0 6 14 8 13 39 1 3148 223.5 8.9 0.9 0.05
A33 A33 8 48 9 1 6 14 8 13 41 3 1446 229,8 1.0 0.1 0.05
A34 A34 8 49 9 1 6 14 8 13 40 1 3803 221.8 10.9 1.1 0.05
Page 1 of 3
CLIENT:DENISON MINES PROJECT:RADON FLUX MEASUREMENTS,WHITE MESA MILL PROJECT NO.:08004.00
g.
g.
180.0
29.2
WEATHER:NO RAIN
cpm Wt.Out:
TARE WEIGHT:
144
AIR TEMP MIN:43°F
10 8 CHARCOAL BKG:
DATA ENTRY BY:DLC
6
SURFACE:TAILINGS
6 9 8 RETRIEVED:
COUNTED BY:DLC
CAL.DUE:6/05/09
PILE:3 BATCH:A
AREA:BEACH DEPLOYED:
FIELD TECHNICIANS:MG,CS,DLC
COUNTING SYSTEM I.D.:M01/D21,M02/D20
A35 A35 8 50 9 2 6 14 8 13 43 1 2841 224.9 8.1 0.8 0.05
A36 A36 8 51 9 2 6 14 8 13 43 1 5008 212.9 14.5 1.4 0.05
A37 A37 8 52 9 3 6 14 8 13 45 2 1005 227.8 1.1 0.1 0.05
A38 A38 8 53 9 3 6 14 8 13 45 1 1402 227.9 3.7 0.4 0.05
A39 A39 8 54 9 4 6 14 8 13 47 1 3451 225.9 9.9 1.0 0.05
A40 A40 8 55 9 4 6 14 8 13 47 1 2954 229.0 8.4 0.8 0.05
A41 A41 8 56 9 5 6 14 8 13 48 1 4863 224.8 14.1 1.4 0.05
A42 A42 8 58 9 5 6 14 8 13 48 1 6340 221.2 18.5 1.8 0.05
A43 A43 8 58 9 6 6 14 8 13 49 1 1089 221.1 2.8 0.3 0.05
A44 A44 8 59 9 6 6 14 8 13 49 1 24459 222.3 72.6 7.3 0.05
A45 A45 9 0 9 7 6 14 8 13 51 1 2177 209.6 6.1 0.6 0.05
A46 A46 9 1 9 7 6 14 8 13 51 1 13359 210.6 39.5 3.9 0.05
A47 A47 9 2 9 8 6 14 8 13 52 1 4561 217.9 13 .2 1.3 0.05
A48 A48 9 3 9 8 6 14 8 13 52 1 3504 215.4 10.0 1.0 0.05
A49 A49 9 4 9 9 6 14 8 13 53 1 8521 219.3 25.1 2.5 0.05
A50 A50 9 5 9 9 6 14 8 13 53 1 3449 218.9 9.9 1.0 0.05
A51 A51 9 6 9 10 6 14 8 13 55 1 6262 221.6 18.4 1.8 0.05
A52 A52 9 7 9 10 6 14 8 13 56 2 1585 230.6 1.9 0.2 0.05
A53 A53 9 8 9 11 6 14 8 13 57 1 1737 218.1 .8 0.5 0.05
A54 A54 9 9 9 11 6 14 8 13 58 2 1629 227.7 2.0 0.2 0.05
ASS ASS 9 10 9 12 6 14 8 14 1 2 1189 220.5 1.4 0.1 0.05
A56 A56 9 11 9 12 6 14 8 14 1 2 1060 229.6 1.2 0.1 0.05
A57 A57 9 12 9 13 6 14 8 14 3 1 1773 225.9 4.9 0.5 0.05
A58 A58 9 13 9 13 6 14 8 14 4 4 1301 224.7 0.5 0.1 0.05
A59 A59 9 14 9 14 6 14 8 14 6 1 2440 217.0 6.9 0.7 0.05
A60 A60 9 15 9 14 6 14 8 14 7 2 1600 222.7 2.0 0.2 0.05
A61 A61 9 16 9 15 6 14 8 14 9 1 10200 208.8 30.3 3.0 0.05
A62 A62 9 17 9 15 6 14 8 14 9 1 7698 204.4 22.7 2.3 0.05
A63 A63 9 19 9 16 6 14 8 14 10 1 4824 221.7 14.1 1.4 0.05
A64 A64 9 19 9 16 6 14 8 14 10 1 15211 196.0 45.3 4.5 0.05
A65 A65 9 20 9 17 6 14 8 14 12 2 1960 231.2 2.5 0.3 0.05
A66 A66 9 20 9 17 6 14 8 14 12 3 1045 226.9 0.6 0.1 0.05
A67 A67 9 21 9 18 6 14 8 14 14 1 3062 227.0 8.8 0.9 0.05
A68 A68 9 21 9 18 6 14 8 14 15 2 1844 220.5 2.3 0.2 0.05
Page 2 of 3
CLIENT:DENISON MINES PROJECT:RADON FLUX MEASUREMENTS,WHITE MESA MILL PROJECT NO.:08004.00
g.
g.
180.0
29.2
WEATHER:NO RAIN
cpm WI.Out:
TARE WEIGHT:
144
AIR TEMP MIN:43°F
10 8 CHARCOAL BKG:
DATA ENTRY BY:DLC
6
SURFACE:TAILINGS
6 9 8 RETRIEVED:
COUNTED BY:DLC
CAL.DUE:6/05/09
PILE:3 BATCH:A
AREA:BEACH DEPLOYED:
FIELD TECHNICIANS:MG,CS,DLC
COUNTING SYSTEM I.D.:M01/D21,M02/D20
A69 A69 9 22 9 20 6 14 8 14 16 1 23381 216.6 70.1 7.0 0.05
A70 A70 9 22 9 20 6 14 8 14 16 1 4666 220.2 13.6 1.4 0.05
A71 A71 9 23 9 21 6 14 8 14 18 1 6472 214.0 19.1 1.9 0.05
An A72 9 23 9 21 6 14 8 14 18 1 10036 194.6 29.7 3.0 0.05
A73 A73 9 24 9 22 6 14 8 14 20 3 1199 199.1 0.8 0.1 0.05
A74 A74 9 24 9 22 6 14 8 14 20 3 1011 224.0 0.6 0.1 0.05
A75 A75 9 25 9 23 6 14 8 14 23 1 2720 223.3 7.8 0.8 0.05
A76 A76 9 25 9 25 6 14 8 14 23 1 8452 225.3 25.0 2.5 0.05
A77 A77 9 26 9 25 6 14 8 14 24 1 1343 224.1 3.6 0.4 0.05
A78 A78 9 26 9 26 6 14 8 14 24 1 4897 223.8 14.3 1.4 0.05
A79 A79 9 27 9 26 6 14 8 14 25 1 4599 227.2 13.4 1.3 0.05
A80 A80 9 27 9 31 6 14 8 14 25 1 1469 225.6 4.0 0.4 0.05
A81 A81 9 28 9 31 6 14 8 14 26 1 1631 224.2 4.5 0.4 0.05
A82 A82 9 28 9 32 6 14 8 14 26 1 1211 226.1 3.2 0.3 0.05
A83 A83 9 29 9 32 6 14 8 14 30 5 1085 232.2 0.2 0.1 0.05
A84 A84 9 29 9 33 6 14 8 14 28 1 3218 223.6 9.2 0.9 0.05
A85 A85 9 30 9 33 6 14 8 14 33 1 7554 217.2 22.3 2.2 0.05
A86 A86 9 31 9 34 6 14 8 14 33 1 1641 221.5 4.5 0.4 0.05
A87 A87 9 32 9 34 6 14 8 14 35 2 1371 227.9 1.6 0.2 0.05
A88 A88 9 32 9 35 6 14 8 14 36 3 1004 226.5 0.6 0.1 0.05
A89 A89 9 33 9 35 6 14 8 14 38 4 1212 226.5 0.5 0.1 0.05
A90 A90 9 34 9 36 6 14 8 14 38 2 1301 225.7 1.5 0.2 0.05
A9l A91 9 34 9 36 6 14 8 14 42 2 1455 227.3 1.8 0.2 0.05
A92 A92 9 35 9 37 6 14 8 14 42 1 6175 221.5 18.1 1.8 0.05
A93 A93 9 36 9 37 6 14 8 14 44 1 5618 229.1 16.5 1.7 0.05
A94 A94 9 37 9 38 6 14 8 14 44 1 2953 226.0 8.4 0.8 0.05
A95 A95 9 38 9 38 6 14 8 14 47 5 1059 231.7 0.2 0.1 0.05
A96 A96 9 38 9 39 6 14 8 14 46 1 1964 218.8 5.5 0.5 0.05
A97 A97 9 39 9 39 6 14 8 14 51 1 1029 206.4 2.7 0.3 0.05
A98 A98 9 40 9 40 6 14 8 14 51 1 2091 229.5 5.9 0.6 0.05
A99 A99 9 40 9 40 6 14 8 14 53 2 1081 226.5 1.2 0.1 0.05
A100 A100 9 41 9 41 6 14 8 14 53 1 4569 223.5 13.3 1.3 0.05
AVERAGE RADON FLUX RATE FOR THE CELL 3 BEACHES REGION:12.2 28
Page 3 of 3
CLIENT:DENISON MINES PROJECT:RADON FLUX MEASUREMENTS,WHITE MESA MILL PROJECT NO,:08004,00
g,
g,
180,0
29,2
WEATHER:NO RAIN
cpm WI.Out:
TARE WEIGHT:
144
AIR TEMP MIN:51°F
11 8 CHARCOAL BKG:
DATA ENTRY BY:DLC
6
SURFACE:SOIL
6 10 8 RETRIEVED:
COUNTED BY:DLC
CAL,DUE:6/05/09
PILE:2 BATCH:B
AREA:COVER DEPLOYED:
FIELD TECHNICIANS:MG,CS,DLC
COUNTING SYSTEM I,D,:M01/D21,M02/D20
B01 B01 11 10 11 45 6 14 8 9 42 4 1307 211.7 0.4 0.0 0.04
B02 B02 11 11 11 46 6 14 8 9 43 6 1141 215.1 0.1 0.0 0.04
B03 B03 11 12 11 47 6 14 8 9 50 6 1010 211.5 0.1 0.0 0.04
B04 B04 11 13 11 48 6 14 8 9 50 5 1244 218.9 0.2 0.0 0.04
B05 B05 11 14 11 49 6 14 8 9 55 4 1034 218.6 0.3 0.0 0.04
B06 B06 11 15 11 50 6 14 8 9 56 6 1016 214.8 0.1 0.0 0.04
B07 B07 11 16 11 51 6 14 8 10 2 4 1242 210.5 0.4 0.0 0.04
B08 B08 11 17 11 52 6 14 8 10 2 3 1023 209.3 0.5 0.1 0.04
B09 B09 11 18 11 53 6 14 8 10 6 3 1328 213.8 0.7 0.1 0.04
BI0 BI0 11 19 11 54 6 14 8 10 5 1 3241 224.8 7.2 0.7 0.04
B11 B11 11 20 11 55 6 14 8 10 9 1 1383 218.6 2.9 0.3 0.04
B12 B12 11 21 11 56 6 14 8 10 10 4 1073 214.6 0.3 0.0 0.04
B13 B13 11 22 11 57 6 14 8 10 13 2 1530 213.4 1.5 0.1 0.04
B14 B14 11 23 11 58 6 14 8 10 13 1 1929 218.1 4.2 0.4 0.04
B15 B15 11 24 11 59 6 14 8 10 16 3 1058 224.4 0.5 0.1 0.04
B16 B16 11 25 12 0 6 14 8 10 15 1 1874 219.4 4.0 0.4 0.04
B17 B17 11 26 12 1 6 14 8 10 20 4 1167 210.4 0.3 0.0 0.04
B18 B18 11 27 12 2 6 14 8 10 20 3 1194 214.4 0.6 0.1 0.04
B19 B19 11 28 12 3 6 14 8 10 23 1 2104 216.3 4.6 0.5 0.04
B20 B20 11 29 12 4 6 14 8 10 23 1 1020 210.7 2.0 0.2 0.04
B21 B21 11 49 11 45 6 14 8 10 25 3 1164 221.4 0.6 0.1 0.04
B22 B22 11 48 11 46 6 14 8 10 24 1 1360 211.0 2.9 0.3 0.04
B23 B23 11 47 11 47 6 14 8 10 31 2 1033 213.6 0.9 0.1 0.04
B24 B24 11 46 11 48 6 14 8 10 28 2 1294 214.8 1.2 0.1 0.04
B25 B25 11 45 11 49 6 14 8 10 36 1 2196 216.1 4.9 0.5 0.04
B26 B26 11 44 11 50 6 14 8 10 38 4 1228 221.2 0.4 0.0 0.04
B27 B27 11 43 11 51 6 14 8 10 41 1 2918 217.9 6.6 0.7 0.04
B28 B28 11 42 11 52 6 14 8 10 41 1 36761 219.9 87.0 8.7 0.04
B29 B29 11 41 11 53 6 14 8 10 42 1 6305 219.3 14.7 1.5 0.04
B30 B30 11 40 11 54 6 14 8 10 42 1 1247 211.0 2.6 0.3 0.04
B31 B31 11 39 11 55 6 14 8 10 43 1 3130 217.6 7.1 0.7 0.04
B32 B32 11 38 11 56 6 14 8 10 43 1 2885 214.7 6.5 0.6 0.04
B33 B33 11 37 11 57 6 14 8 10 45 1 11246 219.4 26.3 2.6 0.04
B34 B34 11 36 11 58 6 14 8 10 47 4 1311 222.3 0.4 0.0 0.04
Page 1 of 3
CLIENT:DENISON MINES PROJECT:RADON FLUX MEASUREMENTS,WHITE MESA MILL PROJECT NO.:08004.00
g.
g.
180.0
29.2
WEATHER:NO RAIN
cpm WI.Out:
TARE WEIGHT:
144
AIR TEMP MIN:51 OF
11 8 CHARCOAL BKG:
DATA ENTRY BY:DLC
6
SURFACE:SOIL
6 10 8 RETRIEVED:
COUNTED BY:DLC
CAL.DUE:6/05/09
PILE:2 BATCH:B
AREA:COVER DEPLOYED:
FIELD TECHNICIANS:MG,CS,DLC
COUNTING SYSTEM 1.0.:M01/D21,M02/D20
B35 B35 11 35 11 59 6 14 8 10 51 3 1269 213.4 0.7 0.1 0.04
B36 B36 11 34 12 0 6 14 8 10 50 1 1503 214.7 3.2 0.3 0.04
B37 B37 11 33 12 1 6 14 8 10 52 1 1060 219.6 2.2 0.2 0.04
B38 B38 11 32 12 2 6 14 8 10 52 1 5413 219.9 12.4 1.2 0.04
B39 B39 11 31 12 3 6 14 8 10 53 1 1286 209.3 2.7 0.3 0.04
B40 B40 11 30 12 4 6 14 8 10 56 5 1001 215.8 0.1 0.0 0.04
B41 B41 12 9 12 31 6 14 8 11 1 5 1005 215.0 0.1 0.0 0.04
B42 B42 12 8 12 30 6 14 8 10 59 1 2748 213.5 6.1 0.6 0.04
B43 B43 12 7 12 29 6 14 8 11 6 4 1288 211.2 0.4 0.0 0.04
B44 B44 12 6 12 28 6 14 8 11 5 1 1926 215.1 4.2 0.4 0.04
B45 B45 12 5 12 27 6 14 8 11 9 1 2895 213 .1 6.5 0.7 0.04
B46 B46 12 4 12 26 6 14 8 11 9 1 2159 213.6 4.7 0.5 0.04
B47 B47 12 3 12 25 6 14 8 11 12 3 1027 215.7 0.5 0.1 0.04
B48 B48 12 2 12 24 6 14 8 11 12 4 1091 219.2 0.3 0.0 0.04
B49 B49 12 1 12 23 6 14 8 11 17 5 1074 208.3 0.2 0.0 0.04
B50 B50 12 0 12 22 6 14 8 11 17 5 1210 209.6 0.2 0.0 0.04
B51 B51 11 59 12 21 6 14 8 11 20 1 10317 219.2 24.1 2.4 0.04
B52 B52 11 58 12 20 6 14 8 11 22 4 1212 211.4 0.4 0.0 0.04
B53 B53 11 57 12 19 6 14 8 11 25 1 3787 215.1 8.6 0.9 0.04
B54 B54 11 56 12 18 6 14 8 11 25 1 2593 215.9 5.8 0.6 0.04
B55 B55 11 55 12 17 6 14 8 11 28 4 1065 211.0 0.3 0.0 0.04
B56 B56 11 54 12 16 6 14 8 11 26 1 4872 213 .1 11.2 1.1 0.04
B57 B57 11 53 12 15 6 14 8 11 31 1 3938 217.7 9.0 0.9 0.04
B58 B58 11 52 12 14 6 14 8 11 32 3 1044 219,7 0.5 0.1 0.04
B59 B59 11 51 12 13 6 14 8 11 36 4 1166 214.a 0.4 0.0 0.04
B60 B60 11 50 12 12 6 14 8 11 37 5 1100 212.1 0.2 0.0 0.04
B61 B61 12 11 12 12 6 14 8 11 43 6 1188 213.8 0.1 0.0 0.04
B62 B62 12 12 12 13 6 14 8 11 41 2 1777 218.6 1.8 0.2 0.04
B63 B63 12 13 12 14 6 14 8 11 49 5 1229 212.3 0.2 0.0 0.04
B64 B64 12 14 12 15 6 14 8 11 49 4 1046 219.1 0.3 0.0 0.04
B65 B65 12 15 12 16 6 14 8 11 53 1 3330 217.9 7.7 0.8 .0.04
B66 B66 12 16 12 17 6 14 8 11 53 1 1487 216.5 3.2 0.3 0.04
B67 B67 12 17 12 18 6 14 8 11 55 2 1902 216.7 1.9 0.2 0.04
B68 B68 12 18 12 19 6 14 8 11 55 2 1606 208.8 1.6 0.2 0.04
Page 2 of 3
CLIENT:DENISON MINES PROJECT:RADON FLUX MEASUREMENTS,WHITE MESA MILL PROJECT NO.:08004.00
g.
g.
180.0
29.2
WEATHER:NO RAIN
cpm Wt.Out:
TARE WEIGHT:
144
AIR TEMP MIN:51°F
11 8 CHARCOAL BKG:
DATA ENTRY BY:DLC
6
SURFACE:SOIL
6 10 8 RETRIEVED:
COUNTED BY:DLC
CAL.DUE:6/05/09
PILE:2 BATCH:B
AREA:COVER DEPLOYED:
FIELD TECHNICIANS:MG,CS,DLC
COUNTING SYSTEM I.D.:M01/D21,M02/D20
B69 B69 12 19 12 20 6 14 8 11 57 1 1074 211.1 2.2 0.2 0.04
B70 B70 12 20 12 21 6 14 8 11 58 3 1193 216.0 0.6 0.::"0.04
B71 B71 12 21 12 22 6 14 8 12 0 2 1377 212.5 1.3 0.::"0.04
B72 B72 12 22 12 23 6 14 8 12 0 1 2804 215.9 6.4 0.6 0.04
B73 B73 12 23 12 24 6 14 8 12 2 1 1255 217.9 2.7 0.3 0.04
B74 B74 12 24 12 25 6 14 8 12 3 2 1015 215.4 0.9 0.1 0.04
B75 B75 12 25 12 26 6 14 8 12 6 4 1123 214.5 0.3 0.0 0.04
B76 B76 12 26 12 27 6 14 8 12 6 3 1164 215.0 0.6 0.1 0.04
B77 B77 12 27 12 51 6 14 8 12 12 6 1025 207.9 0.1 0.0 0.04
B78 B78 12 28 12 40 6 14 8 12 9 1 11610 218.9 27.4 2.7 0.04
B79 B79 12 29 12 41 6 14 8 12 16 1 7155 220.0 16.8 1.7 0.04
B80 B80 12 30 12 42 6 14 8 12 18 4 1052 216.5 0.3 0.0 0.04
B81 B81 12 31 12 43 6 14 8 12 22 3 1077 218.9 0.5 0.1 0.04
B82 B82 12 32 12 44 6 14 8 12 23 4 1144 220.3 0.3 0.0 0.04
B83 B83 12 33 12 45 6 14 8 12 27 4 1277 210.1 0.4 0.0 0.04
B84 B84 12 34 12 46 6 14 8 12 27 3 1111 215.2 0.5 0.1 0.04
B85 B85 12 35 12 47 6 14 8 12 32 4 1279 210.5 0.4 0.1 0.04
B86 B86 12 36 12 48 6 14 8 12 31 3 1188 213.2 0.6 0.1 0.04
B87 B87 12 37 12 49 6 14 8 12 35 1 1177 223.1 2.5 0.2 0.04
B88 B88 12 38 12 40 6 14 8 12 35 1 1003 211.3 2.1 0.2 0.04
B89 B89 12 39 12 41 6 14 8 12 39 6 1102 217.6 0.1 0.0 0.04
B90 B90 12 40 12 42 6 14 8 12 39 6 1137 207.1 0.1 0.0 0.04
B9l B9l 12 41 12 43 6 14 8 12 45 4 1011 217.4 0.3 0.0 0.04
B92 B92 12 42 12 44 6 14 8 12 45 4 1077 222.2 0.3 0.0 0.04
B93 B93 12 43 12 45 6 14 8 12 50 6 1134 213.4 0.1 0.0 0.04
B94 B94 12 44 12 46 6 14 8 12 50 6 1199 207.3 0.1 0.0 0.04
B95 B95 12 45 12 47 6 14 8 12 55 3 1133 217.6 0.6 0.1 0.04
B96 B96 12 46 12 50 6 14 8 12 55 3 1244 223.7 0.7 0.1 0.04
B97 B97 12 47 12 49 6 14 8 12 58 2 1422 219.6 1.4 0.1 0.04
B98 B98 12 48 12 50 6 14 8 13 0 5 1121 222.5 0.2 O.C 0.04
B99 B99 12 49 12 51 6 14 8 13 5 4 1144 216.0 0.3 O.C 0.04
B100 B100 12 51 12 52 6 14 8 13 5 4 1251 219.4 0.4 O.C 0.04
AVERAGE RADON FLUX RATE FOR THE CELL 2 COVERED REGION:3.9 28
Page 3 of 3
CLIENT:DENISON MINES PROJECT:RADON FLUX MEASUREMENTS,WHITE MESA MILL PROJECT NO.:08004.00
g.
g.
180.0
29.2
WEATHER:NO RAIN
cpm WI.Out:
TARE WEIGHT:
147
AIR TEMP MIN:39°F
12 8 CHARCOAL BKG:
DATA ENTRY BY:DLC
6
SURFACE:SOIL
6 11 8 RETRIEVED:
COUNTED BY:DLC
CAL.DUE:6/05/09
PILE:3 BATCH:C
AREA:COVER DEPLOYED:
FIELD TECHNICIANS:MG,CS,DLC
COUNTING SYSTEM I.D.:M01/D21,M02/D20
COl COl 15 22 15 23 6 15 8 14 45 1 2658 230.3 6.0 0.6 0.04
CO2 CO2 15 22 15 23 6 15 8 14 45 1 2380 224.6 5.4 0.5 0.04
C03 C03 15 23 15 24 6 15 8 14 46 1 1452 227.2 3.1 0.3 0.04
C04 C04 15 23 15 24 6 15 8 14 46 1 5663 225.4 13 .2 1.3 0.04
C05 C05 15 24 15 25 6 15 8 14 47 1 1112 231.1 2.3 0.2 0.04
C06 C06 15 25 15 25 6 15 8 14 48 2 1920 212.7 2.0 0.2 0.04
C07 C07 15 25 15 26 6 15 8 14 50 1 3101 209.6 7.1 0.7 0.04
C08 C08 15 26 15 26 6 15 8 14 50 1 2455 213.4 5.5 0.6 0.04
C09 C09 15 26 15 27 6 15 8 14 51 1 5232 221.1 12.3 1.2 0.04
C10 C10 15 27 15 27 6 15 8 14 51 1 21478 220.2 51.2 5.1 0.04
Cll Cll 15 27 15 28 6 15 8 14 52 1 28727 219.8 68.9 6.9 0.04
C12 C12 15 28 15 28 6 15 8 14 52 1 8178 219.3 19.3 1.9 0.04
C13 C13 15 29 15 29 6 15 8 14 53 1 1888 216.1 4.2 0.4 0.04
C14 C14 15 29 15 29 6 15 8 14 53 1 1886 212.0 4.2 0.4 0.04
C15 C15 15 30 15 30 6 15 8 14 54 1 2663 222.1 6.1 0.6 0.04
C16 C16 15 31 15 30 6 15 8 14 54 1 6743 224.1 15.9 1.6 0.04
C17 C17 15 32 15 31 6 15 8 14 55 1 2429 218.3 5.5 0.6 0.04
C18 C18 15 33 15 31 6 15 8 14 55 1 2462 208.1 5.6 0.6 0.04
C19 C19 15 34 15 32 6 15 8 14 57 1 2109 222.1 4.7 0.5 0.04
C20 C20 15 35 15 32 6 15 8 14 57 1 2021 225.4 4.5 0.5 0.04
C21 C21 15 36 15 33 6 15 8 14 58 1 4907 216.7 11.5 1.1 0.04
C22 C22 15 37 15 33 6 15 8 14 58 1 6373 228.3 15.0 1.5 0.04
C23 C23 15 38 15 34 6 15 8 15 1 3 1151 215.9 0.6 0.1 0.04
C24 C24 15 39 15 34 6 15 8 15 0 1 1217 218.7 2.6 0.3 0.04
C25 C25 15 40 15 35 6 15 8 15 3 1 5129 219.9 12.1 1.2 0.04
C26 C26 14 30 14 30 6 15 8 15 6 6 1177 208.6 0.1 0.0 0.04
C27 C27 14 31 14 30 6 15 8 15 12 5 1021 216.2 0.1 0.0 0.04
C28 C28 14 32 14 31 6 15 8 15 10 1 2902 213.8 6.7 0.7 0.04
C29 C29 14 33 14 31 6 15 8 15 17 3 1077 217.9 0.5 0.1 0.04
C30 C30 14 34 14 32 6 15 8 15 17 3 1288 223.1 0.7 0.1 0.04
C31 C31 14 35 14 32 6 15 8 15 22 6 1116 218.1 0.1 0.0 0.04
C32 C32 14 36 14 33 6 15 8 15 22 5 1150 217.5 0.2 0.0 0.04
C33 C33 14 36 14 33 6 15 8 15 26 1 1269 218.3 2.7 0.3 0.04
C34 C34 14 37 14 34 6 15 8 15 26 1 3221 221.8 7.5 0.7 0.04
Page 1 of 3
CLIENT:DENISON MINES PROJECT:RADON FLUX MEASUREMENTS,WHITE MESA MILL PROJECT NO.:08004.00
g.
g.
180.0
29.2
WEATHER:NO RAIN
cpm Wt.Out:
TARE WEIGHT:
147
AIR TEMP MIN:39°F
12 8 CHARCOAL BKG:
DATA ENTRY BY:DLC
6
SURFACE:SOIL
6 11 8 RETRIEVED:
COUNTED BY:DLC
CAL.DUE:6/05/09
PILE:3 BATCH:C
AREA:COVER DEPLOYED:
FIELD TECHNICIANS:MG,CS,DLC
COUNTING SYSTEM 1.0.:M01/D21,M02/D20
C35 C35 14 38 14 34 6 15 8 15 30 7 1070 213.0 0.0 0.0 0.04
C36 C36 14 38 14 35 6 15 8 15 30 6 1111 217.7 0.1 0.0 0.04
C37 C37 14 39 14 35 6 15 8 15 37 5 1056 217.4 0.2 0.0 0.04
C38 C38 14 40 14 36 6 15 8 15 36 3 1116 223.1 0.5 0.1 0.04
C39 C39 14 40 14 36 6 15 8 15 33.2 SPILLED
C40 C40 14 41 14 37 6 15 8 15 40 2 1309 218.6 1.2 0.1 0.04
C41 C41 14 41 14 37 6 15 8 15 43 4 1183 218.4 0.4 0.0 0.04
C42 C42 14 42 14 38 6 15 8 15 42 2 1086 243.0 1.0 0.1 0.04
C43 C43 14 42 14 38 6 15 8 15 46 1 2851 218.3 6.6 0.7 0.04
C44 C44 14 43 14 39 6 15 8 15 46 1 23602 222.0 57.2 5.7 0.04
C45 C45 14 43 14 39 6 15 8 15 48 2 1861 218.8 1.9 0.2 0.04
C46 C46 14 44 14 40 6 15 8 15 50 5 1166 218.7 0.2 0.0 0.04
C47 C47 14 44 14 40 6 15 8 15 54 3 1080 218.4 0.5 0.1 0.04
C48 C48 14 45 14 41 6 15 8 15 55 5 1036 219.2 0.1 0.0 0.04
C49 C49 14 45 14 41 6 15 8 15 58 2 1616 215.1 1.6 0.2 0.04
C50 C50 14 46 14 42 6 15 8 15 59 3 1470 213.5 0.8 0.1 0.04
C51 C51 14 47 14 47 6 15 8 16 2 1 1155 219.4 2.5 0.2 0.04
C52 C52 14 47 14 47 6 15 8 16 3 3 1079 218.8 0.5 0.1 0.04
C53 C53 14 48 14 48 6 15 8 16 7 4 1151 219.8 0.3 0.0 0.04
C54 C54 14 48 14 48 6 15 8 16 7 3 1423 211.7 0.8 0.1 0.04
C55 C55 14 49 14 49 6 15 8 16 11 3 1453 221.1 0.8 0.1 0.04
C56 C56 14 49 14 49 6 15 8 16 11 3 1472 213.5 0.8 0.1 0.04
C57 C57 14 50 14 50 6 15 8 16 13 1 1747 208.6 3.9 0.4 0.04
C58 C58 14 51 14 50 6 15 8 16 15 4 1167 212.0 0.4 0.0 0.04
C59 C59 14 51 14 51 6 15 8 16 18 3 1128 216.8 0.6 0.1 0.04
C60 C60 14 52 14 51 6 15 8 16 19 3 1131 214.5 0.6 0.1 0.04
C61 C61 14 52 14 52 6 15 8 16 23 3 1141 217.1 0.6 0.1 0.04
C62 C62 14 53 14 52 6 15 8 16 24 4 1236 220.2 0.4 0.1 0.04
C63 C63 14 53 14 53 6 15 8 16 28 4 1000 200.1 0.3 0.0 0.04
C64 C64 14 54 14 53 6 15 8 16 27 2 1495 215.2 1.5 0.1 0.04
C65 C65 14 55 14 54 6 15 8 16 31 1 1270 219.3 2.8 0.3 0.04
C66 C66 14 55 14 54 6 15 8 16 31 1 1405 214.6 3.1 0.3 0.04
C67 C67 14 56 14 55 6 15 8 16 32 1 2712 218.6 6.3 0.6 0.04
C68 C68 14 56 14 55 6 15 8 16 32 1 3434 213.5 8.0 0.8 0.04
Page 2 of 3
CLIENT:DENISON MINES PROJECT:RADON FLUX MEASUREMENTS,WHITE MESA MILL PROJECT NO.:08004,00
g.
g.
180.0
29,2
WEATHER:NO RAIN
cpm WI.Out:
TARE WEIGHT:
147
AIR TEMP MIN:39°F
12 8 CHARCOAL BKG:
DATA ENTRY BY:DLC
6
SURFACE:SOIL
6 11 8 RETRIEVED:
COUNTED BY:DLC
CAL.DUE:6/05/09
PILE:3 BATCH:C
AREA:COVER DEPLOYED:
FIELD TECHNICIANS:MG,CS,DLC
COUNTING SYSTEM I.D.:M01/D21,M02/D20
C69 C69 14 57 14 56 6 15 8 16 33 1 1034 225.4 2.2 0.2 0.04
C70 C70 14 57 14 56 6 15 8 16 34 2 1225 222.4 1.1 0.1 0.04
C7l C7l 14 58 14 57 6 15 8 16 35 1 6278 216.3 15.0 1.5 0.04
C72 C72 14 59 14 57 6 15 8 16 36 2 1121 207.5 1.0 0.1 0,04
C73 C73 14 59 14 58 6 15 8 16 39 5 1196 214.4 0.2 0.0 0.04
C74 C74 15 0 14 58 6 15 8 16 39 4 1216 224.6 0.4 0.1 0.04
C75 C75 15 0 14 59 6 15 8 16 43 1 1327 214,2 2.9 0.3 0.04
C76 C76 15 1 15 3 6 15 8 16 44 3 1068 212.6 0.5 0.1 0.04
C77 C77 15 1 15 3 6 15 8 16 47 1 1190 221.4 2.6 0.3 0.04
C78 C78 15 2 15 4 6 15 8 16 47 1 1513 212.5 3.3 0.3 0.04
C79 C79 15 3 15 4 6 15 8 16 49 3 1344 219.5 0.7 0.1 0.04
C80 C80 15 3 15 5 6 15 8 16 49 2 1772 219.6 1.8 0.2 0.04
C81 C81 15 4 15 5 6 15 8 16 54 5 1222 214.7 0.2 0,0 0.04
C82 C82 15 4 15 6 6 15 8 16 53 1 1909 214.3 4.3 0.4 0.04
C83 C83 15 5 15 6 6 15 8 16 58 2 1474 215.1 1.4 0.1 0.04
C84 C84 15 6 15 7 6 15 8 16 57 1 3216 216.2 7.5 0.8 0.04
C85 C85 15 6 15 7 6 15 8 17 2 4 1235 215.3 0.4 0.1 0.04
C86 C86 15 7 15 8 6 15 8 17 1 1 1983 219.3 4.5 0.4 0.04
C87 C87 15 7 15 8 6 15 8 17 5 2 1348 238.4 1.3 0.1 0.04
C88 C88 15 8 15 9 6 15 8 17 4 1 3625 220.3 8.5 0.9 0.04
C89 C89 15 9 15 9 6 15 8 17 7 1 2746 217.1 6.4 0.6 0.04
C90 C90 15 9 15 10 6 15 8 17 7 1 4788 216.7 11.4 1.1 0.04
C91 cn 15 10 15 10 6 15 8 17 11 5 1081 227.5 0.2 0.0 0.04
C92 cn 15 11 15 11 6 15 8 17 10 3 1488 236.1 0.9 0.1 0.04
C93 C93 15 11 15 11 6 15 8 17 15 2 1266 219.7 1.2 0.1 0.04
C94 C94 15 12 15 12 6 15 8 17 15 1 1188 216.0 2.6 0.3 0.04
C95 C95 15 13 15 12 6 15 8 17 17 1 2447 219.1 5.7 0.6 0.04
C96 C96 15 13 15 13 6 15 8 17 18 2 1631 217,4 1.6 0.2 0.04
C97 C97 15 14 15 13 6 15 8 17 22 5 1186 224.1 0.2 0.0 0.04
C98 C98 15 15 15 14 6 15 8 17 21 1 3837 217.0 9.1 0.9 0.04
C99 C99 15 16 15 14 6 15 8 17 26 2 1475 221.6 1.5 0.1 0.04
C100 CI00 15 17 15 15 6 15 8 17 25 1 14217 216.9 34.6 3.5 0.04
AVERAGE RADON FLUX RATE FOR THE CELL 3 COVERED REGION:5.5 28
Page 3 of 3
CLIENT:DENISON MINES PROJECT:RADON FLUX MEASUREMENTS,WHITE MESA MILL PROJECT NO,:08004,00
PILE:3 BATCH:A SURFACE:TAILINGS AIR TEMP MIN:43°F WEATHER:NO RAIN
AREA:BEACH DEPLOYED:6 9 8 RETRIEVED:6 10 8 CHARCOAL BKG:144 cpm Wl.Out:180,0 g,
FIELD TECHNICIANS:MG,CS,DLC COUNTED BY:DLC DATA ENTRY BY:OLe TARE WEIGHT:29,2 g,
COUNTING SYSTEM I,D,:M01/D21,M02/D20 CAL,DUE:6/05/09
BLANK CANISTER ANALYSIS:
A BLANK 1 A BLANK 1 8 10 8 35 6 14 8 14 59 10 1499 210.1 0.02 0.04 0.05 CONTROL
A BLANK 2 A BLANK 2 8 10 8 35 6 14 8 14 59 10 1467 210.2 0.01 0.04 0.05 CONTROL
A BLANK 3 A BLANK 3 8 10 8 35 6 14 8 15 10 10 1505 209.9 0.02 0.04 0.05 CONTROL
A BLANK 4 A BLANK 4 8 10 8 35 6 14 8 15 10 10 1486 211.0 0.01 0.04 0.05 CONTROL
A BLANK 5 A BLANK 5 8 10 8 35 6 14 8 15 21 10 1506 210,6 0.02 0.04 0.05 CONTROL
AVERAGE BLANK CANISTER ANALYSIS FOR THE CELL 3 BEACHES REGION:0.02 pCi/m's
Page 1 of 1
CLIENT:DENISON MINES PROJECT:RADON FLUX MEASUREMENTS,WHITE MESA MILL PROJECT NO.:08004.00
PILE:2 BATCH:B SURFACE:SOIL AIR TEMP MIN:51°F WEATHER:NO RAIN
AREA:COVER DEPLOYED:6 10 8 RETRIEVED:6 11 8 CHARCOAL BKG:144 cpm Wl.Oul:180.0 g.
FIELD TECHNICIANS:MG,CS,DLC COUNTED BY:DLC DATA ENTRY BY:DLC TARE WEIGHT:29.2 g.
COUNTING SYSTEM I.D.:M01/D21,M02/D20 CAL.DUE:6/05/09
BLANK CANISTER ANALYSIS:
~~~.ll
B BLANK 1 B BLANK 1 11 0 11 35 6 14 8 15 21 10 1605 209.7 0;04 0.03 0.04 CONTROL
B BLANK 2 B BLANK 2 11 0 11 35 6 14 8 15 32 10 1542 209.9 0.02 0,03 0.04 CONTROL
B BLANK 3 B BLANK 3 11 0 11 35 6 14 8 15 32 10 1540 210.5 0.02 0.03 0.04 CONTROL
B BLANK 4 B BLANK 4 11 0 11 35 6 14 8 15 43 10 1570 211.0 0.03 0.03 0.04 CONTROL
B BLANK 5 B BLANK 5 11 0 11 35 6 14 8 15 43 10 1616 211.3 0.04 0.03 0.04 CONTROL
AVERAGE BLANK CANISTER ANALYSIS FOR THE CELL 2 COVERED REGION:0.03 pCi/m2 s
Page 1 of 1
CLIENT:DENISON MINES PROJECT:RADON FLUX MEASUREMENTS,WHITE MESA MILL PROJECT NO.:08004.00
PILE:3 BATCH:C SURFACE:SOIL AIR TEMP MIN:39°F WEATHER:NO RAIN
AREA:COVER DEPLOYED:6 11 8 RETRIEVED:6 12 8 CHARCOAL BKG:147 cpm Wl.Ou!:180.0 g.
FIELD TECHNICIANS:MG,CS,DLC COUNTED BY:DLC DATA ENTRY BY:DLC TARE WEIGHT:29.2 g.
COUNTING SYSTEM I.D.:M01/D21,M02/D20 CAL.DUE:6/05/09
BLANK CANISTER ANALYSIS:
~
C BLANK 1 C BLANK 1 14 28 15 30 6 15 8 14 11 10 1614 209.7 0.03 0.03 0.04 CONTROL
C BLANK 2 C BLANK 2 14 28 15 30 6 15 8 14 11 10 1543 208.9 0.02 0.03 0.04 CONTROL
C BLANK 3 C BLANK 3 14 28 15 30 6 15 8 14 22 10 1609 209.9 0.03 0.03 0.04 CONTROL
C BLANK 4 C BLANK 4 14 28 15 30 6 15 8 14 22 10 1587 210.0 0.03 0.03 0.04 CONTROL
C BLANK 5 C 5 14 28 15 30 6 15 8 14 3 1 17 209.O.03 0.04
AVERAGE BLANK CANISTER ANALYSIS FOR THE CELL 3 COVERED REGION:0.03 pCi/m2 s
Page 1 of 1
FIGURE 2
WHITE MESA MILL
BLANDING,UTAH
NESHAPS 2008
TELLeD
ENVIRONMENTAL,LLC
200 100 a 200 400
SCALE IN FEET~--
t
N
PREPARED FOR
DENISON MINES (USA)CORP.
A01'-SAMPLE LOCATION ON
8EACH AREAS
COlo -SAMPLE LOCATION ONCOVEREDAREAS
THIS ORAWING IS THE PROPERTY OF TEllCOENVIRONMENTAL,lLC,AND IS NOT TO BEREPRODUCED,MODIFIED OR USED FOR ANY
OTHER PROJECT OR EXTENSION OF THIS PROJECTEXCEPT8YAGREEMENTWITHTEelCO.
B43 842
0 0
B63 B620 0
880 B79 B78000
890 B89 888
0 0 0
B98 897 I)/-0 0
~
8100o
B58 857 856 B55 854 853 852 851 850 849 B48 B47 846 B45
0 0 0 0 0 0 0 0 0 0 0 0 0 0~CELL 2~
874 873 872 871 870 869 868 B67 866 B65 t64
0 0 0 0 0 0 0 0 0 B:~:l8878B6885884883
0 0 0 0 0 o 0
86A2 891
0
Jl c
="~~I ~\D I~CELL l-I~=::J[(
~CJ
BOl 802 B03 B04 805 B06 807 808 d9 Bl0 Bl1 812 813 B14 815 B16 820 ,
~-0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
821 B22 823 824 825 8J6 827 828 829 B30 B31 832 B33 B34 B35 B36
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
......COVERED REGION......
~BEACH REGION~
DETAIL VIEW
",'f • •~:;0 Al0 AIf?A~•
••A8l A'l.A4-5 A~•
A96 A02.A26 A2~.A6\..•A82 A~.A44..A62 A69
•A95 A~.A25 A~•A47 A60 A~J •
Al00 A:•A8J A~~.A43 A:• •A70 ~6MJf•AOJ A~•:-A31 A'l2 •A59 A64 ~1 •
•A93 A~•AI4 A23 At •A49 A~8 ••A77
A96 A~•A85 A~A~•A41 A~•~65 A72 ~B
••M4 A~••1\33 A~{)•167 A66 A'3 •
A97 1\91 • •A16 A21.A51 :6.A79
••A06 A87 • •AJ4 ,.A67 •
A89 A90 A~•A17 A20 A~~9 A52 :5 •;'74
ABa A~A~•A38 ~•A68 A75
A36.A54A37
COVERED REGION
APPENDIX F
SEMI-ANNUAL METEROLOGICAL MONITORING REPORT
JULY THROUGH DECEMBER 2008
AND
ANNUAL METEROLOGICAL SUMMARY REPORT
FOR 2008
MCVEHIL·MONNETT
ASSOCIATES,INC.
Air Quality.Environmenlol Management
January 20,2009
Mr.David Turk
Radiation Safety Officer
Denison Mines (USA)Corporation
P.O.Box 809
6425 South Highway 191
Blanding,Utah 84511
Subject:Semi-Annual Meteorological Monitoring Report July Through December 2008 and
Annual Meteorological Summary Report for 2008 for the Denison Mines (USA)
Corporation White Mesa Mill,Blanding,Utah
MMA Project Number:2239-08
Dear Mr.Turk:
Enclosed are three copies of the Semi-Annual Meteorological Monitoring Report for the White
Mesa Mill for the July through December 2008 monitoring period.We have compiled an Annual
Summary for 2008 which Is also Included as part of this report.Please contact me If you have
any questions or concerns.
Ray Roetman
Senior EnVironmental Specialist
Enclosure:Data Report (3 Copies)
Cc:Bill Monnett,wlo enclosure
Gary Garman,wlo enclosure
File 2239-08
44 Inverness Drive East.Building C •Englewood,Colorado 80112
303/79()'1332 •Fax -303/790-7820
www.mcvehil-monnett.com
for
01:1'1150
MINES
Denison Mines (USA)Corporation
White Mesa Mill
P.O.Box 809
Blanding,Utah 84511
Semi-Annual Monitoring Report
July 1-December 31,2008 and
Annual Monitoring Summary for 2008
White Mesa Mill Meteorological Station
January 20,2009
MMA Project Number 2239-08
MCVEHIL·MONNETT
ASSOCIATES,INC.
by McVehil-MonnettAssociates,lnc.
44 lnvemess Drive East,Building C
Englewood,CO 80112
[phone]
\"-
Table of Contents
Section
1.0 Introduction 1
2.0 Monitoring Program Description 2
2.1 Site Description 2
2.2 Monitoring Instrumentation 2
2.3 Data Collection and Processing 2
2.4 QualityAssurance 3
3.0 Analysis Results -July through December 2008 5
3.1 Missing Data for the July through December 2008 Monitoring Period 5
3.2 Hourly Data Presentation 5
3.3 Wind Analysis by Hour of the Day 5
3.4 SigmaTheta and Atmospheric Stability 6
3.5 Precipitation Data 7
3.6 Data Recovery 8
4.0 Annual Meteorological Data Summary 14
5.0 Conclnsions 18
List ofTables
Number
2-1 Instrument Specifications for the White Mesa Mill Station 3
3-1 10 Meter Wind Data Analysis from 7/1/2008 through 12/3112008
(Wind Frequency Distribution byDirection and Speed)9
3-2 Frequencies ofOccurrence for Atmospheric Stability Class for July-
December 2008 10
3-3 Recorded Liquid Precipitation Collected at the White Mesa Mill
July -December 2008 10
3-4 Data Recovery Rates for Parameters Collected at the White Mesa Mill
July-December 2008 10
4-1 10 Meter Wind Data Analysis from 11112008 through 12/31/2008
(Wind Frequency Distribution by Direction and Speed)15
4-2 Monthly and Annual Wind Speed Summary for 2008 16
4-3 2008 Annual Frequencies ofOccurrence for Atmospheric Stability Class 16
4-4 2008 Annual Data Recovery Rates at the White Mesa Mill
Meteorological Station 16
List ofFigures
Number
2-1 White Mesa Mill Monitoring Station Site Location Map 4
3-1 July -December 2008 Wind Rose (Graphical Annual Wind
Frequency Distribution)11
3-2 Graphical Wind Frequency Distributions by Hour ofDay
July-December 2008 12
3-3 Graphical Wind Frequency Distributions by Stability Class
July-December 2008 13
4-1 January -December 2008 Wind Rose (Graphical Annual Wind
Frequency Distribution)17
List ofAppendices
A
B
C
D
E
Performance Audit Report,July -December 2008
Hourly Data in SAROAD Tables,July -December 2008
Joint Frequency Distribution ofWind Speed by Wind Direction byHour of
the Day,July -December 2008
Joint FrequencyDistribution ofWind Speed by Wind Direction by Stability
Class,July -December 2008
2008 Annual Joint Frequency Distribution ofWind Speed by Wind Direction by
Stability Class
ii
1.0 INTRODUCTION
In 1977,meteorological,air quality,and radiological monitoring was initiated at the White Mesa
Mill.The original purpose ofthesemonitoringprograms was to document theregional atmospheric
baseline and to provide adequate data to assess the potential air quality impacts resulting from the
mill.After construction ofthe mill,the monitoringprograms weremodified to address compliance
ofmill operations.
This report describes important aspects ofthe meteorological monitoring operations conducted at
White MesaMill fordata collected from July 1 through December31,2008 andfor the 2008 annual
monitoring period.Theremainder ofthis report is presented in four sections:monitoring program
description (Section 2.0),analysis results (Section 3.0),annual meteorological data summary
(Section 4.0),and conclusions (Section 5.0).Appendices A through D contain the semi-annual
performance auditreport,hourlydata listings,serni-annualjointfrequency distributions byhours of
the day,and semi-annual stabilityjoint frequency distributions bystabilityclass.The annual stability
joint frequency distributions by stability class are presented in Appendix E.
(
2.0 MONITORING PROGRAM DESCRIPTION
Themeteorological parameters collected for the monitoringperiod were wind speed,winddirection,
and standard deviation ofhorizontal wind direction (sigma theta),the latter being a measure of
atmospheric stability.Wind speed and winddirection were directlymeasured while sigmatheta and
stability class were calculated.
2.1 Site Description
The region encompassing the White Mesa Mill is shown in Figure 2-1.The mill is located on the
White Mesa approximately five miles south ofBlanding,Utah,justwestofStateHighway 191.The
surrounding terrain slopes up towards the north and down to the south through southwest.The
meteorological monitoringstation,located on the northernpropertyboundary ofthemill,is situated
in the southwest comer of Section 22,Township 37 South and Range 22 East at an elevation of
5,660 feet above meansea level.This location was chosenfor the purpose ofcompliance monitoring
for operations at the mill.
2.2 Monitoring Instrumentation
The sensors,theiraccuracies,and the sampling heights used in the monitoringprogram are shownin
Table 2-!.A Met One wind cup anemometer and wind vane is installed at the standard ten-meter
height aboveground-level.Thetwo Met Onesensors are connectedto a Campbell Scientific CR·!0
data logger.The logger continuously recorded wind speed and wind direction,calculating and
storinghourlyaverages ofthese parameters.Thelogger also calculatedand stored sigmatheta.Data
stored in the logger were then transferred to a solid state storage module which is downloaded on a
monthly basis.
2.3 Data Collection and Processing
Data on storage modules were downloaded to a computer for further processing through several
programroutines.These programs reformatthe data,check for anomalies,calculate stability class
((See Section 3.4),and perform other statistical summary functions.
2
(
2.4 Quality Assurance
After the meteorological data were downloaded and processed,the data were checked for errors or
inconsistencies flagged bythe processingprograms.Thedata were also reviewed for anyanomalies
not captured bythe processing programs.The air monitoring project manager was notified ofany
anomalies,and the reasons for the erroneous data along with possible solutions to the problem(s)
were discussed.The Mill was then contacted and given instructions for any necessary repairs.If
required,personnel from the Mill's airmonitoring contractor were dispatched to the site to remedy
the situation.
During thelast sixmonths of2008,one semi-annual performance audit was conducted.Performance
audits ofthe wind speed and wind direction sensors were completed November 25,2008.The
results indicated that the sensors wereoperating within EPA-specifiedaccuracies.Theauditreport is
included in Appendix A.
Table 2-1
Instrument Specifications
for the Denison Mines (USA)Corporation
White Mesa Mill Meteorological Station
Parameter Instrument Reading Monitoring Manufacturer and Model
Accuracy Height Number
Wind Speed 0.1 meters/second 10 meters Met One 010
Wind Direction ±3.0°10 meters Met One 020
Sigma Theta N/A 10 meters Calculated
Data Logger N/A N/A Campbell Scientific CR-IO
3
(
4165000
f
~4160000
~
Om 2000m
630000
4000m
635000
NAD27 UTM Easting (m)
6000m
4
Figure 2-1
While Mesa Mill
Monitoring Station
Site Location Ma
3.0 ANALYSIS RESULTS -July through December 2008
Meteorological data were collected at the White Mesa Mill and processed according to the
procedures described in Section 2.0.The stability class was detennined for each hour (see Section
3.4 for determination methodology)and the data set was then analyzed bytime ofday and stability
classification.
3.1 Missing Data for the July through December 2008 Monitoring Period
Meteorological monitoring and data collection proceeded normally during the monitoring period.
All data were valid except for two hours on November 25 which were not available due to semi-
annual performance audits and calibrations being completed.
3.2 Hourly Data Presentation
For the JulythroughDecember 2008 monitoringperiod,hourlyaveraged values ofwind speed,wind
( direction,sigma thetaand stability class arepresented in Appendix B in the Storage and Retrieval of
Aerometric Data (SAROAD)format,including missingorinvalid data.TheSAROAD format also
includes,when applicable,average monthly values for each hour,daily averages and monthly
averages.
3.3 Wind Analysis by Hour ofthe Day
The standard wind frequency distribution for the reporting period is presented graphically in
Figure 3-1 and intabular form in Table 3-1.(Note the commercial softwareused to produce graphs
uses a starting threshold different than that of the project wind sensors.)To show the diurnal
patterns,additional wind frequency distributions were developed graphically in 4-hour segments
throughout the day (midnight to 4:00 A.M.,4:00 A.M.to 8:00 A.M.,etc.)and are presented in
Figure 3-2.In addition,the diurnal frequency distribution tables are presented in Appendix C.
Table 3-I shows the dominant flow for the period was a drainage wind out ofthe north-northeast
occurring 15.2 percent (%)ofthe time.A secondarymaximum was from the north occurring 13.0%
~..ofthe time.This flow is a result ofthe surrounding terrain's influence on the site.
5
Figure 3-2 confinns the downslope wind pattern seen inFigure 3-1,depicting the diurnal pattern of
this flow as well as other less predominant flows.During the nighttime period from 2000 through
0800 Mountain Standard Time (MST),north-northwest through northeasterlywinds were the most
prominent.During this nighttime period,the drainage winds occurred approximately 68%ofthe
time.For the daylight period from 0800 through 1600 MST,the prominent winds were from the
southeast through southwest.These are upslope or return flows and occurred on average
approximately 64%ofthetime duringthis daylight period.A bi-modal flow pattern occurred from
1600 though 2000,as the frequencies ofupslope and drainage winds were similar.
A tabular joint frequency distribution is presented in Table 3-I.The mean wind speed for the
monitoringperiod was 3.2 meters per second (mls).Thedirectionwith thehighest mean wind speed
was north-northwest at 4.0 mis,while the lowest mean wind speed was from the east at 2.4 mls.
3.4 Sigma Theta and Atmospheric Stability
Sigmatheta (thestandard deviation ofthehorizontal wind direction)is calculated using the method
listed in On-Site Meteorological Program Guidance for Regulatory Modeling Applications
(EPA-450/4-87-013).First,sine and cosineofwind directionare calculatedbya Campbell Scientific
CR-I0 datalogger.Then,the average sine and cosinemeasurements for each fifteen minute period
are processed by the datalogger to calculate hourly sigma theta values.
Since sigma theta is a gross measure of air turbulence,it can be used as an indirect measure of
atmospheric stability.Themethod used to calculate the Pasqnill-Gifford(p-G)atmospheric stability
class from sigma theta for this program is in accordance with EPA-450/4-87-0l3.This method
involves two steps.First,an initiai estimate ofstability for the hour is made based on sigma theta
values calculated from the sine and cosine ofwind direction.The second step involves modifying
the initial estimate using the hourly mean wind speed and time ofday ofthe observation.More
specific information about this process can be found in this EPA reference.
The p·G information is important in determining the dispersion ofplumes or puffs ofairborne
\.material.Forexample,greater turbulencepromotes dispersion and,therefore,lowers concentrations
6
ofairborne pollutants.There are two types ofturbulence;thennal turbulence which is a function of
vertical thennal stratification,and mechanical turbulence which is a function ofwind speed and
surface roughness.With light wind speeds,vertical thennal effects dominate the production of
turbulence.During sunny conditions,the temperature drops quickly with height above ground,
creating unstable conditions.Conversely,during light-wind,nighttime conditions,a surface
inversion fonns creating stable conditions with relatively little vertical motion.Horizontal motion
during light wind speed often produces meandering in wind direction.Local terrain also plays an
important part in the production of turbulence through the production of surface roughness and
mechanical turbulence.
The P-G stability class describes the dispersive potential ofthe atmosphere,with Class A being the
most dispersive and Class F being the least dispersive.As indicated above,the P-G methodology
allows unstable conditions (Classes A through C)to only occur during the daytime,while stable
conditions (Class E and F)can only occur at night.Neutral conditions (Class D)can occur at any
time.
The stability class data collected for the July through December 2008 monitoring period are
presented inTable 3-2 and stability roses are presented in Figure 3-3.Unstable conditionsoccurred
39.6%ofthe time,neutral conditions 32.2%ofthe time,and stable conditions 28.2%ofthe time.
The stability class frequency distribution tables are presented in Appendix D.
3.5 Precipitation Data
Precipitation data (rain or snow)are recorded in inches.The data are not collected at the
meteorological monitoring station but at a different location at the White Mesa Mill property.Data
for the July through December 2008 monitoring period are shown in Table 3-3.During the
monitoring period,6.23 inches of precipitation were measured.The month with the greatest
precipitation amount was December with 2.33 inches recorded.Theminimum monthly amount of
precipitation received was 0.02 inches,which occurred in September.
7
(
'-..
3.6 Data Recovery
Table 3-4 sununarizes the data recovery for this semiannual reporting period.Data recovery was
100%for each ofthe parameters at the meteorological monitoring station.
8
Table 3·1
10 METER WIND DATA ANALYSIS
FROM 7/1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAl STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
+----------WIND SPEED CLASSES (M/S)----------+
AVERAGE
0.0-1.8-3.3-5.4 8.4 >WIND
DIR 1.8 3.3 5.4 8.4 11.0 11.0 TOTAL SPEED
-------------------------------------------------------------------------
N .0197 .0575 .0485 .0045 .0000 .0000 0.130 3.1
NNE .0238 .0825 .0408 .0036 .0007 .0002 0.152 2.9
NE .0188 .0344 .0091 .0041 .0007 .0000 0.067 2.8
ENE .0140 .0161 .0059 .0014 .0005 .0000 0.038 2.5
E .0086 .0086 .0018 .0009 .0000 .0000 0.020 2.4
ESE .0077 .0113 .0045 .0007 .0000 .0000 0.024 2.5
SE .0082 .0217 .0102 .0020 .0002 .0000 0.042 3.0
SSE .0082 .0281 .0140 .0007 .0000 .0000 0.051 2.9
S .0127 .0440 .0156 .0063 .0020 .0002 0.081 3.2
SSW .0143 .0485 .0168 .0048 .0023 .0011 0.088 3.2
SW .0086 .0274 .0145 .0048 .0002 .0014 0.057 3.4
WSW .0063 .0154 .0118 .0063 .0002 .0000 0.040 3.6
W .0027 .0102 .0082 .0059 .0000 .0000 0.027 3.7
WNW .0059 .0106 .0086 .0034 .0005 .0000 0.029 3.4
NW .0091 .0174 .0206 .0102 .0020 .0000 0.059 3.9
NNW .0104 .0276 .0390 .0145 .0034 .0000 0.095 4.0
-------------------------------------------------------------------------
TOT:0.179 0.461 0.270 0.074 0.013 0.003 1.000
AVG:1.4 2.6 4.1 6.6 9.2 11.9 3.2
TOTAl NUMBER OF VALID READINGS FOR THIS TABLE ~>4414
OUT OF 4414 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS ~>2
TOTAL NUMBER OF CALM HOURS =>0
\.
9
(
Table 3-2
Frequencies ofOccurrence
for Atmospheric Stability Class for July -December 2008
Stability Class Time ofDay Class Frequency of
Can Occur Occurrence (%)
A:Very Unstable Daylight Hours 18.0
B:Moderately Unstable Daylight Hours 11.6
C:Slightly Unstable Daylight Hours 10.0
D:Neutral Anytime 32.2
E:Slightly Stable Nighttime Hours 15.9
F:Moderately Stable Nighttime Hours 12.3
Table 3-3
Recorded Liquid Precipitation
Collected at the White Mesa Mill
July -December 2008
Month Recorded Liquid
Precipitation (inches)
July 1.00
August 1.31
September 0.02
October 0.66
November 0.91
December 2.33
Table 3-4
Data Recovery Rates
for Parameters Collected
at the White Mesa Mill
July-December 2008
Parameter Recovery Rate (%)
Wind Speed 100.0
Wind Direction 100.0
Sigma Theta 100.0
Stability Class 100.0
10
WIND ROSE PLOT:
WhltoMosaMill
Blanding,Utah
D1S"I.AY~
Wind Speed
D/l'Getlon (blowing from)
'NORTH'
(
20%.
16%.
12%
,
EAST;
OATAPEIllOO~
•>
:SOUTH
WIND SPEED
(m/s)
eI >"11.1
II]8.8-11.1
•5.7-8.8
•3.5-6.7CI.,.3.'
•0.502.1
Calms:0.00%
COMPANYNAME:
Derlison Mines (USA)Corporation
(,
2008
Ju/1-Dec31
00:00 -23:00
CAl.MWINDS:
0,00%
AVG.WINO SPEro:
3.20 mfs
II
MOOELEll.~
McVehil~Monnett
Associates
lUTALCOUNT:
4414hrs,
OATE:
11912009
FIGURE 3-1
PROJfCT NO.:
2239-08
N
Hours 01-04
N
N
s
Hours 05-08
N
w
Hours 09-12
w
Hours 13w16
N
Hours 17-20
N
Hours 21-24
Figure 3-2 Graphical Wind Frequency Distributions by Hour ofDay
July to December,2008
Denison White Mesa Mill
12
(
N
Stability Class A
N
Stability Class C
N
Stability Class E
N
s
Stability Class B
N
Stability Class D
N
Stability Class F
(
Figure 3-3 Graphical Wind Frequency Distributions by Stability Class
July to December,2008
Danlson White Mesa Mill
13
4.0 ANNUAL METEOROLOGICAL DATA SUMMARY
The annual 2008 wind frequency distribution is presented graphically in Figure 4-1 and in tabular
fonn in Table 4-1.The predominant wind directions during 2008 were north-northeasterly,
occurring 14.4%of the time and northerly which occurred 12.3%ofthe time.As discussed in
Section3.3,the northerlywinds are drainage winds occurring during nighttime.The southerlywinds
are upslope winds occurring during daytime hours.The annual mean wind speed was 3.5 mls.
Table 4-2 lists the mean speed and maximum hourly average wind speed for each month.The
highest maximum hourlyaverage wind speed of14.2 mls was recorded onMarch16 for hourending
1300 MST.
The percent occurrence ofeach stability class during 2008 is provided in Table 4-3.During 2008,
unstable conditions occurred 37.0%of the time,neutral conditions 36.4%ofthe time,and stable
conditions 26.7%ofthe time.The annual stability class frequency distribution tables are presented
in Appendix E.
Table 4-4 lists the annual data recoveries for each parameter at the meteorological monitoring
station.Data recovery for each parameter was 100%meeting the federal minimum data retrieval
requirement of90%.
14
Table 4-1
10 METER WIND DATA ANALYSIS
FROM 1/1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
+----------WIND SPEED CLASSES (M/S)----------+
AVERAGE
0.0-1.8-3.3-5.4 8.4 >WIND
DIR 1.8 3.3 5.4 8.4 11.0 11.0 TOTAL SPEED
-------------------------------------------------------------------------
N .0168 .0459 .0454 .0093 .0042 .0010 0.123 3.7
NNE .0213 .0738 .0406 .0059 .0018 .0006 0.144 3.1
NE .0182 .0419 .0139 .0042 .0011 .0000 0.079 2.9
ENE .0136 .0172 .0062 .0015 .0005 .0000 0.039 2.6
E .0093 .0080 .0028 .0008 .0000 .0000 0.021 2.4
ESE .0072 .0101 .0030 .0005 .0000 .0000 0.021 2.5
(SE .0082 .0177 .0084 .0024 .0003 .0000 0.037 3.0
SSE .0087 .0264 .0121 .0011 .0002 .0000 0.049 2.9
S .0099 .0360 .0187 .0059 .0018 .0005 0.073 3.4
SSW .0110 .0390 .0223 .0084 .0027 .0014 0.085 3.7
SW .0085 .0264 .0163 .0098 .0021 .0015 0.065 3.9
WSW .0076 .0150 .0120 .0091 .0016 .0005 0.046 4.0
W .0048 .0126 .0096 .0112 .0018 .0005 0.040 4.4
WNW .0061 .0105 .0106 .0057 .0016 .0002 0.035 3.9
NW .0094 .0146 .0180 .0139 .0021 .0003 0.058 4.2
NNW .0096 .0220 .0322 .0178 .0044 .0005 0.087 4.3
-------------------------------------------------------------------------
TOT:0.170 0.417 0.272 0.108 0.026 0.007 1.000
AVG:1.4 2.6 4.2 6.6 9.4 12.3 3.5
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE =>8779
OUT OF 8779 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS =>5
TOTAL NUMBER OF CALM HOURS =>8
l
IS
(
Table 4-2
Monthlv and Annual Wind Sneed SummarY for 2008
Period Average Maximum I-Hour
(m!s)Averal!e (m!s)
January 2.7 11.3
February 2.9 9.1
March 4.1 14.2
April 4.8 14.1
May 4.3 13.5
June 3.9 9.9
July 3.3 9.8
August 3.4 9.2
September 3.3 11.9
October 3.3 14.0
November 3.1 10.6
December 2.8 11.8
ANNUAL 3.5 14.2
Table 4-3
2008 Annual Frequencies ofOccurrence
for Atmosnheric Stability Class
Stability Class Time ofDay Class Frequency of
Can Occur Occurrence (%)..
A:Very Unstable Daylight Hours 15.9
B:Moderately Unstable Daylight Hours 10.5
C:Slightly Unstable Daylight Hours 10.6
D:Neutral Anytime 36.4
E:Slightly Stable Nighttime Hours 13.9
F:Moderately Stable Nighttime Hours 12.8
Table 4-4
2008 Annual Data Recovery Rates
at the White Mesa Mill Meteoroloeical Station
Parameter Recovery Rate (%)
Wind Sneed 100.0
Wind Direction 100.0
Sigma Theta 100.0
Stability Class 100.0
16
(
(
WIND ROSEPlOT:
White Mesa Mill
Blandino,Utah
;"0'_~WEST,
,,,,
DISPlAY:
Wind Speed
Dlroctlon (blowingfrom)
~\o.",.•
:NORTH -,,
,
~-·l-·--f eAST',1
COMMEN1S:DATAPERIOD:
,
•_1_.',,,,
:SOUTH
WIND SPEED
(m/s)
m>::11.1
11II 8.6·11.1
•5.7-8.6II3.6·5.7
[Jl 2.1-3.6
•0.5·2.1
Calms:0.09%
COMPANVIIAME:
Denison Mines(USA)Corporation200B
Jeni ~DQc31
110:00 •23:00
ClJ.M WINOS:
0.09%
3.50 m/s
17
MODELER:
McVehll.Monnett
Associates
TOTAL COUNT:
8779hrs.
DATE;
11912009
FIGURE 4-1
PRO.lECTMO.:
2239-08
5.0 CONCLUSIONS
Meteorological monitoring and data collection proceeded nonnally during 2008 at the White Mesa
Mill site.Data recovery rates were 100%,which was above the data retrieval requirement of90%.
The data collected for the period are acceptable for the designated purpose ofthe monitoring system.
18
Appendix A
Performance Audit Report
July -December 2008
/,
(
Denison Mines (USA)Corporation
White Mesa Mill
P.O.Box 809
Blanding,UT 84511
Meteorological Performance Audit Report
Fourth Quarter 2008
White Mesa Mill
November 2008
MMA Project Number 2239.08
MCVEHIL·MoNNm
ASSOCIATES,INC.
Afl,~·W~~t~
by McVehil-Monnelt Associates,Inc.
44 Inverness Drive East,Building C
Englewood,CO 80112
303)790-1332
1.0 Introduction
Semi-annual performance audits forthe Denison Mines Corporation White Mesa Mill meteorological
monitoring station were completed by McVehil-Monnett Associates on November 25,2008.The
White Mesa Mill is located approximately seven miles south ofBlanding,Utah.The meteorological
air monitoring station is located northeast ofthe mill and approximately 1/4 mile west of Highway
191.
This report summarizes the results of the performance audit which was conducted in accordance
with the following guidance documents:
"Quality Assurance Handbook for Air Pollution Measurement Systems",Vol.IV -
Meteorological Measurements,(EPA·600/R-94/038d),revised March 1995.
"Meteorological Monitoring Guidance forRegulatory Modeling Applications",(EPA-
454/R-99-005),February 2000.
The remainder ofthis report is divided into sections on specific auditing procedures (Section 2.0),
audit results (Section 3.0)and conclusions (Section 4.0).Attachment A contains the audit
documents and Attachment B contains the audit instruments'calibration certificates and
documentation.
1
(
\,
2.0 Specific Auditing Procedures
The wind direction system procedure consists of auditing the sensor for linearity and vane
orientation bysighting the vane along the crossarm and comparing system output to the measured
azimuth,which is measured to the nearest half degree by a precision compass.A torque watch
was used to measure the starting torque of the wind direction sensor.
The wind speed system was audited using a selectable speed anemometer drive which turns the
sensor anemometer shaft at five known rates of rotation.The values recorded by the wind speed
measurement system were then compared to the target wind speeds forthese rates ofrotation.The
starting torque ofthe wind speed sensor was measured using a torque watch.
2
3.0 Audit Results
Specific results for the meteorological audits are presented in Table 1.A brief discussion of the
results follows.
For the wind direction audit orientations of94.0°,165.0°,274.0°,and 345.0°,data loggerreadings
of 90.2°,163.6°,273.7°,and 345.9°,respectively were measured.These results fall within the
desired accuracy range for the wind direction measurement system which is ±5°.A ten point
linearity checkwas completed and showedthatthe measurement systemwas linear as indicated by
theerror band of4.2°(acceptance limit is :S6°).The starting torque ofthewind direction sensorwas
measured and found to be 5.0 gram-centimeters (gm-cm)clockwise and 5.5 gm-cm counter-
clockwise,which is below the upper acceptance limit of6.5 gm-cm.
The wind speed audit results were excellent as data logger readouts of 0.27,1.9,3.5,8.3,and
16.3 m/s corresponded exactly to their respective target wind speed values.The desired accuracy
range forwind speed audits is ±(0.22 mls).The measured starting torque was less than 0.2 gm-cm,
which is below the upper acceptance limit of0.22 gm-cm.
3
TABLE 1
AUDIT RESULTS
DENISON MINES CORPORATION
WHITE MESA MILL
METEOROLOGICAL STATION
November25,2008
Wind Direction1 Audit Value
94.0°
165.0°
274.0°
345.0°
Digital Value
90.2°
163.6°
273.7°
345.9°
Sensor starting threshold torque:5.0 gm-em CW and 5.5 gm-em CCW
Wind Speed2 Audit Value Digttal Value
orpm 0.27 mls 0.27 mls
60 rpm 1.9 m/s 1.9 m/s
120 rpm 3.5 mls 3.5 m/s
300 rpm 8.3 m/s 8.3m/s
600 rpm 16.3 m/s 16.3 m/s
Sensor starting threshold torque:<0.2 gm-em
1)Wind direction system targetaccuracy:±5°.Sensor starting threshold torque upper acceptance limit:6.5 gm-cm.
2)Wind speed system target accuracy:±(0.22 m/s).Sensor starting torque upper acceptance limit:0.22gm-cm.
4
(
4.0 Conclusions
(
The performance audit documented the current operating characteristics of the meteorological
instrumentation.The results of the meteorological performance audit indicate that the
instrumentation audited was operating within EPA-specified accuracies.
5
(
(
ATTACHMENT A
AIR QUALITY PERFORMANCE AUDIT DOCUMENTS
l-onn No.l"2004D.l
Revision No.2
Date 6106
Page I ofl
WIND DIRECTION AUDIT FORM
Manufilcturerl Model No.SerialNo.
PlI'WtrPwl.""/+""-S'·/.or~
Landmark #2 r;-rtf HI-(~I~""'I l t;I
Azimuth ~'3.0 0
Azimuth ~~,V '
(corrected)
)1(,1;.3 i/projectD.<t"",~1""V 22.:»-Of·
N III /Site W.h1ft /l\m "",IJ (llilW
"),11 Sensor Height_~.::...Y(,;l:...!..:",,~_
1 C)OL)(,/Date/Time 11-2("·c>e Oq'l.<-/()<;..~1"15'1"
tJ li+{j"Auditor yo,.,Ro d M ""tI3.C:~i"Readingf.?,....-r...(wj r;o,,,,'"(W
rv (II Inclination~
Landmark 111 AI.''J eMsU·r<+-
Azimuth ;,3'\.()
AzirnuthJ'-I -:;,[)°
(corrected)
'~ensor .f\J\d Ql\l ()20(._
Vane MA 0 I'\L~~-'<?.foo"",
Digital DatnAcq.('S1 (R.lb
Compass S'yv"b Il.IH'I/'3Gzt
Theodolite _-,N"'-L(~!\.'--_
Torque Watch \N ..,..-.HG,-/""
Solar Sighting;Time_1JlL_A7,irnuth
Magnetic Declination:N'\1 ,1/•t.:/":
·ilf/.,"'w/l:pf-a~..,fot,",d,J'~(>,f'
System Linearity Audit
\GS',0 /{P ~~
)'i~'.O 3~s.'
,)rr
C)~2'1
!-...__L_.U_,d_ID_nr_k_#I -j ,-__Lan........d__rn-nr-k-#2---II
Target Sel1s01'~Data Acquisition System Target Sensor~Data Acquisition System
A.<,.Azimuth (oJ Azimuth ('l Sine Cosine Azimuth CO)Azimuth (oJ I.Sine Cosine l~.!)
('.C---j ---J-~--:4~=--f-...:-___:".j----""-f.,....::=:..:c.:,.k.....:....-_f_--_:7l~~q~ku Y\t~~/I~~;F
[/~"21~.o,5yrzQ.Tf7 ~!"'~I",n
(
Degree Wheel
(Degrees)
30-CW
90-CW
180-CW
270-CW
330-CW
Data Ac..System
Readings~
2<&,'1 '!
13 e."/\"l <1 .1,;(
~'l¢.~,z'
Tn.O I
v !)"
Degree Wheel Data Ac.Systelil
(Degrees)Readings (Peg)
330-CCW
270-CCW
180-CCW
90-CCW
30-CCW
McVEHIL-MONNEIT ASSOCIATES
WIND SPEED AUDIT FORM
Fonn No.F2003.M l
Revision No.Originlll
Date 7/06
Page 1 ofl
Project !flo'!../'Vl,,,-,s'2.'2 3,,,,~C1~
Site W~;!-<l'l"1u ~(I'\,11 Cg/(Y-I).
Sensor Height ~\"M
Date/Time l1-~~-119 09:1J,4;l ....{oS3
A1.Jditor Roy Roef .....t-,
Reading <:O.'2 tf"'{'\-v
Serial No.
~/fJ.Sensor
Manufacturer Model
M~M)\<I~(2 {DC
CupslPropeller -,('0'-'-'l?~J..,-,(",-,)N-,-,-__btc.al.e"...Iv I~(
Data Logger ,)(SI A"S.~lB.l>rl"",}"..i
Test Device ISM yo VII'\'(Q.1o~IiW>li\.CI\IIl/iyJ
Torque Watch \N ct<r\HI;,-3f'v1 '\~os=j
~'DYNAMIC WIND SPEED CHECK
(Using Synchtonous Motors or an Anemometer Drive)
(
1)0 RPM =On mls
2)COO RPM =I.~mls
3)\"l..0 RPM ="3l'S mls k/
4)'30(;>RPM =~1 .mJs
5)GOv RPM =I~.3 mls
Data Absolute
Test WS (mig)Logger (mM bifference (m/s)
1.c.J.}/2.,tii \'Cj
3."~.,
4.g.3
5.J 0,3
0.0
6.0
l (•..3
/V
McVEHIL·MONNETrASSOCIATES
(
ATTACHMENT B
DOCUMENTATION OF
AUDIT INSTRUMENTATION CERTIFICATION
~YOUNG
CALIBRATION PROCEDURE
18802/18811 ANEMOMETER DRIVE
DWG:CP18802(C)
REV:C101107 PAGE:3 of 3
BY:TJT DATE:10/11/07
CHK:JC W.C.GAS-12
MODEl:
SERIAL NUMBER:
CERTIFICATE OF CALIBRATION AND TESTING
18811 (Ccmprlsed of Models 18820A Control Unit &18831A Motor Assembly)
CAo ''laB
R.M.Young Company certifies that the above equipment was Inspected and calibrated prior to
shipment In accordance with established manufacturing and testing procedures.Standards
established by RM.Young Company for calibrating the measuring and test equipment used In
controlling product quality are traceable to the National Institute ofStandards and Technology,
Nominal 271060 Output Calculated Indicated
Motor Frequency Rpm (2)Rpm (3)
Rpm Hz (1)
30.0 ?~o.o ?'o.n
150,0 2.'5 1':>0.0 I"'''.....
300,0 So '3,,.,,.,."';00......
450.0 ,<;450.0 450......(
600.0 100 1000.0 r.-.OOI"l
750.0 12'"''?o.o '"1 c:,..,.'"
990,0 I lOS qC.O.O aClo 0
~Clockwise end Counterclockwise rotation verified
(1)Measured frequency output of RM Young Model 271060 standard anemometer attached
to motor shaft271 060 produces 10 pulses perrevolution of the anemometer shaft
(2)Indicated on the Control Unit LCD display
*Indicates out of tolerance
@ No Calibration Adjustments Required DAs Found o As Left
Traceable frequency meter used in calibration Model:DPS140 SN:413",:>
Date of inspection
Inspection Inlerval
\1 MAe.WB
One Year
Tested By b"--
FiJ!';r:arne CP18802iC)doc
/I
McVchiJ -Mannclt Ass«i4lc61JJc.
COMPASS CALIBRATION DOCUMENT
Dale:
Tochnician:
Calibration
Location:
Mapotic f:J 6 I
Declination:......<.7_..!../..,:7_£1C-__
Make:
Model:
Serial
Number:
Compass
.}*'01 i a ~.;f,j;I
..../A
(
Inslntment(.)Used for Calibration
Type and Make:i!tlJ'---!lI!.!..l:~.!oC:£f'~l£t':;;~~jl-_
Model and Serial Number:T /6 /f.AI.-.Z£ll 21!a,
C.rtifi.d:IS:,2.lIZ-ItS 'f1
~,
TEST DATA
Rang.Landmark Calibration Inslntm.nt Camp...(Degr...)Difference
(Describe)(D••rees)Actual Correcled
E••f i"J.J'..,:~."t..~3r8.5-3'18.'::-3f'7C /.SN("'0);,,,1 r;J,'lt-,.,".;,,..of
£·~t ~if..,.,'v;.r"'f 41.1)3 'i.f)'13,(9 /.~NE("'45)u'/'A/.JJd.I".\"~"J,..-
Co.t<,..~r ~;fl'J "'-'U.~?1.e tP.S-E ("'90)Poo~·"t;:.t "-a-93.•t9
N!~t'b ~~~..."'~IV,.!?,IllS:-/22.6)I"J/.f}&.5,-SE ('"135)j>/",b,,~y-1;;Sr;
pc,,"''',P1,..(1ewtr}/33.S IP2.~f.&S ('"180)DA IMf -I~SoA (.,173.~
f..,f iJ~<!....F
2./2.5-2-2./.S-).&SW ("'225)III'/J.,JjJtv,....l22.~
,M"".+1'vw"p~~It...lUJ.S-27J,.S-1-&W ("'270)l",.J.,r .it fJr1Jz..27.i.S-
:f.j..,,...<ss II~O 3/9.19 3~9.S-'3 fit c;--&.5NW("'315)7i"'d"CC....t,..)
Commenls:
Next Certification Due:If)7piA;
Certificate ofCalibration
The instrument listed below meets orexceeds published specifications and has been calibrated under
controlled conditions and is traceable tothe National Institute ofStsndards and Technology(NJ.S.T.),or to
accepted intrinsic standards ofmeasuremen~or by the ratio type ofso!f.·calibration techniques.Cal-Tech
Calibration conforms to the fullowing,ISOIlEC 25/17025.
Customer:Me Vehi Monnett
Certificate Number:601
Instrument Make:Waters
Model:366-3M
SIN:4362
ill:nia
Date:04-17·08
Temp:73 Dog f
Humidity:42%
Rec.In Tol.
Due:04-17-09
This ",port may not be reproduced,except in full without written permission from Cal·Tee Cahbration.
Certification bYO'S-ne·,......,.e
Aceuracy:+\.5%ofrange.
Comments:
Standards Used
Acculab
rroemner
Model
VIC-300
Weight Set
Certification Number
0167979
162656
DueDate
10-10-08
03-01-10
gm·em
Range
3.0
9.0
15.0
20.0
As Found After Adjust Final Reading
2.9 none 2.9
8.9 none 8.9
14.8 none 14.8
19.8 none 19.8
,.
\.Cal-Tech Calibration,Inc.
1314 FM 646 West/Ste.IS/Dickinson,TOMS 77539IPhone 281-614-0050 /Fax[phone]
/
Certificate ofCalibration
The instrument listcd below meets or cxcccds published specifications and bas been calibrated under
conltolled conditions and is traceable to the National Institute ofStanderds and Technology(N.l.S.T.),or to
acc/'Pted intrinsic standards ofmeasuremen~or by the ratio type ofself·calibration techniqucs.Cal·Tech
Ca'bration conforms to the following,ISOIlEC 25/17025.
Customer:McVehil Monnett
CertificateNumber:1347
InstrumentMake:Waters
Model:366·3M
SIN:4385
[D:nla
Date:8·26-08
Temp:75 Dog f
Humidity:45%
Reo.In Tol.
Due Date:8·26·09
This reportmay not be reproduced,except in full without written pennission from Cal·Tec Cab"bration.
Certificationby:ct:'\~(,D
Accoracy:+\.5%range.
Comments:
Standards Used
Acculab
Troemner
Model
VIC·300
Weight Set
Certification Number
0167979
162656
Due Date
03·10
gm
Range
.40
.80
1.2
1.6
1.8
em
Range
As Found AnerAdjost Final Readiog
.397 none .397
.805 none .805
1.[93 none 1.193
1.592 nono 1.592
1.803 none 1.803
.40
.80
1.2
1.6
1.8
.402
.813
1.243
1.594
1.797
none
none
none
none
Done
.402
.813
1.243
1.594
1.797
(Clll-Tech Calibration,Inc.
1314FM 646 West/Ste.15 1Dickinson,Texas 77539IPhone 281·614"()OSO 1Fax[phone]
I
(
AppendlxB
Hourly Data in SAROAD Tables
July -December 2008
,.",--...~
DENISON MINES (USA)CORPORATION
While Mesa Mill (Blanding,UT)Meleorological Sfte
July 2008
10-Meler Level Hourly Wind Speed (m/s)
DAYIHR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Max Min Ave
1 3.9 3.8 3.4 2.4 1.9 2.1 2.6 1.5 2.5 3.2 3.2 2.6 3.0 2.5 2.4 2.2 3.2 3.5 3.7 6.6 6.4 5.6 4.9 5.0 6.6 1.5 3.4
2 3.2 2.8 2.3 42 4.2 3.6 1.9 2.8 3.4 3.1 2.4 2.8 3.0 6.2 3.5 4.0 2.7 4.0 32 3.1 5.2 5.5 3.2 3.4 62 1.9 3.5
3 3.0 3.4 1.8 1.8 2.7 2.8 1.3 1.8 2.1 2.2 2.1 3.2 3.0 2.2 6.4 4.3 2.2 2.6 1.6 3.7 4.5 5.1 5.1 4.3 6.4 1.3 3.1
4 3.8 2.6 1.4 2.7 2.9 1.6 1.3 3.0 52 4.0 3.5 3.6 3.4 3.7 2.9 2.7 2.5 2.8 6.4 5.5 3.7 3.9 3.3 3.1 6.4 1.3 3.3
5 2.4 2.7 3.2 2.6 3.6 2.0 1.3 1.5 1.7 2.2 2.5 2.5 5.9 4.4 6.1 5.0 7.7 5.9 4.8 3.3 2.3 2.0 1.8 2.7 7.7 1.3 3.3
6 3.6 3.7 2.5 2.4 1.7 2.4 0.9 1.3 2.3 2.8 2.7 3.3 4.6 6.7 2.4 1.9 6.6 7.6 3.9 5.2 4.6 3.3 3.1 2.3 7.6 0.9 3.4
7 2.3 1.8 3.5 1.5 2.1 1.4 2.5 2.3 1.6 2.0 2.5 4.3 3.8 3.3 3.1 2.3 4.5 5.2 5.6 3.6 4.1 4.4 4.1 3.8 5.6 1.4 3.2
8 4.3 4.7 3.8 3.4 2.1 3.2 2.2 1.7 1.6 3.0 3.2 2.6 2.8 3.6 4.5 4.8 4.7 3.6 4.0 3.8 4.4 3.6 3.5 3.3 4.8 1.6 3.4
9 4.4 2.9 2.4 1.3 1.8 2.1 2.3 1.4 2.6 3.1 3.3 3.2 3.3 3.2 2.5 2.2 2.3 2.5 4.5 3.9 2.0 1.3 2.8 3.7 4.5 1.3 2.7
10 3.1 3.5 1.4 1.2 1.2 1.1 2.0 2.9 2.5 2.5 2.6 2.6 2.7 2.7 2.4 3.3 2.1 2.9 3.2 1.6 1.0 3.3 4.0 3.3 4.0 1.0 2.5
11 3.4 3.0 1.7 1.0 1.2 1.1 1.8 3.9 3.5 3.3 3.1 3.4 3.4 3.8 3.9 3.7 3.7 6.6 9.0 8.1 6.9 3.6 2.7 2.8 9.0 1.0 3.7
12 3.3 32 1.5 1.9 2.8 2.6 1.5 1.4 2.5 2.1 1.8 2.3 2.6 32 3.8 6.3 4.7 4.1 3.5 2.3 3.6 4.5 4.4 3.7 6.3 1.4 3.1
13 4.5 4.3 2.8 1.5 1.7 2.4 2.3 3.6 3.4 2.7 2.9 3.1 3.3 3.4 3.1 6.6 2.0 3.9 6.6 4.4 2.3 3.4 3.3 2.5 6.8 1.5 3.3
14 3.8 3.6 2.0 3.0 3.2 2.0 2.6 3.0 2.7 2.6 2.7 2.6 2.6 6.5 8.7 6.0 4.1 3.0 2.6 2.6 2.6 7.0 5.4 3.4 8.7 2.0 3.7
15 2.4 2.9 1.5 2.4 3.4 2.5 1.7 1.8 2.5 2.5 1.8 2.8 3.8 3.8 6.1 6.3 5.4 5.0 2.8 2.2 3.7 4.2 3.3 1.7 6.3 1.5 3.2
16 1.9 2.3 2.4 2.1 2.3 2.6 1.9 1.4 1.8 2.6 3.3 3.3 4.1 5.3 5.0 6.6 6.7 5.7 7.0 9.3 9.1 8.5 6.0 2.6 9.3 1.4 4.3
17 2.1 2.4 3.6 3.6 2.1 1.7 0.9 1.9 22 2.2 2.7 3.7 3.0 3.0 4.2 7.6 6.3 3.9 2.3 1.1 1.9 4.2 3.8 3.9 7.6 0.9 3.1
18 3.7 3.0 2.3 2.0 2.1 1.7 0.8 1.6 1.8 2.7 3.0 3.3 3.8 7.2 4.0 2.7 4.5 4.8 4.2 4.2 3.9 4.6 4.9 5.8 7.2 0.8 3.4
19 3.8 1.2 3.2 3.5 1.5 1.6 1.2 1.9 3.1 3.7 3.2 2.9 3.2 3.3 2.9 2.3 2.3 2.4 3.5 3.6 2.9 4.0 7.8 6.7 7.8 1.2 3.2
20 5.7 5.9 7.2 5.4 3.8 2.0 2.8 2.6 3.4 3.3 3.6 3.9 3.9 3.6 3.6 3.9 7.4 8.2 6.9 3.2 1.8 3.7 5.2 1.9 8.2 1.8 4.3
21 1.2 2.2 1.2 1.8 1.9 2.1 1.7 2.3 1.6 1.9 2.6 3.4 2.2 2.3 2.4 3.2 3.3 4.0 1.4 3.0 2.7 3.6 2.8 2.7 4.0 1.2 2.4
22 2.2 2.4 1.5 1.5 2.9 2.7 2.6 2.4 3.5 3.0 32 3.2 5.7 4.3 2.6 3.0 1.9 2.4 3.8 5.5 2.8 1.4 1.9 3.0 5.7 1.4 2.9
23 3.6 2.9 1.7 1.6 2.7 1.7 1.2 1.8 1.4 2.5 2.7 3.3 3.2 3.2 3.4 4.0 4.1 3.0 2.8 2.4 3.3 3.3 3.1 3.2 4.1 1.2 2.8
24 2.1 2.2 2.3 2.7 3.4 3.2 2.1 1.3 2.3 2.9 2.7 3.2 3.2 3.2 4.3 3.0 2.8 6.3 4.9 3.6 4.7 3.1 4.2 2.6 6.3 1.3 3.2
25 2.5 3.3 3.5 3.0 3.5 2.4 2.0 1.9 1.6 2.4 2.5 3.0 4.2 4.3 3.1 4.8 5.8 7.3 9.4 8.3 7.8 5.0 4.2 2.7 9.4 1.6 4.1
26 2.0 1.6 1.6 1.2 1.1 2.3 2.6 2.1 2.3 3.5 3.6 3.8 2.9 2.8 1.8 4.0 3.4 2.5 6.1 4.5 3.8 3.5 3.1 2.3 6.1 1.1 2.9
27 1.6 3.2 3.2 2.6 1.4 1.6 1.3 2.1 1.8 1.4 2.8 4.0 6.0 4.6 2.7 2.4 6.0 4.8 3.6 3.1 3.4 3.4 3.7 3.9 6.0 1.3 3.1
28 5.7 4.0 4.2 2.8 2.5 2.7 1.6 1.4 2.5 2.5 2.9 2.9 4.6 5.4 6.7 6.7 5.8 5.8 5.9 3.6 4.2 4.3 2.6 2.9 6.7 1.4 3.9
29 3.5 3.7 3.9 4.0 2.1 3.4 3.3 2.2 2.7 2.8 2.8 3.8 5.3 4.2 4.1 3.8 3.7 3.4 3.4 3.7 4.3 5.0 4.6 1.9 5.3 1.9 3.6
30 3.0 1.5 1.7 3.7 3.4 2.4 2.2 1.9 2.6 3.2 3.6 4.3 4.0 4.6 6.1 7.1 7.3 6.4 5.4 3.8 3.0 3.1 4.4 4.5 7.3 1.5 3.9
31 4.7 1.8 3.2 2.8 1.4 1.5 2.4 2.5 3.0 2.5 3.2 3.8 3.5 4.2 4.0 4.6 3.8 4.8 6.0 3.7 3.7 4.9 5.1 5.1 6.0 1.4 3.6
Maximum hourty value =
Minimum hourfy value =
Average hourly value =
9.4 mi.
0.8 mi.
3.3 mts
('
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
July 2008
10-Meter Hourly Wind Direction (degrees)
-,
DAYIHR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1 6 357 350 354 31 32 28 64 176 165 187 202 195 254 293 2n 255 265 273 44 41 21 7 341
2 1 17 1 4 359 11 31 118 166 174 200 214 186 270 168 218 257 276 327 23 164 339 133 120
3 103 358 354 27 6 353 19 85 109 134 176 173 191 273 264 295 307 301 3 6 6 10 30 50
4 65 8 88 66 22 42 330 131 148 124 145 181 160 200 189 242 191 192 343 11 15 12 345 335
5 4 30 22 28 9 328 315 178 111 113 237 275 300 300 295 331 18 41 44 26 20 329 348 27
6 12 11 2 316 353 24 37 126 153 189 183 197 44 17 44 80 259 313 324 288 267 299 342 29
7 262 78 4 343 329 349 17 79 123 170 240 44 209 252 343 12 20 37 35 17 1 17 21 12
8 5 9 359 31 5 360 11 162 179 163 158 181 248 293 293 330 302 331 21 12 8 2 3 103
9 111 68 41 345 8 353 323 328 130 136 126 129 171 109 81 68 52 207 208 194 221 329 20 32
10 86 123 101 39 32 51 129 138 141 156 155 186 222 137 2 14 264 40 174 179 145 4 67 88
11 128 111 96 48 78 102 133 166 160 143 168 192 208 205 218 236 282 73 54 44 53 270 260 274
12 138 124 101 36 9 6 40 109 205 214 195 214 244 209 279 343 22 46 10 336 307 114 144 129
13 116 134 132 17 33 34 46 118 133 139 116 178 168 162 252 340 320 84 61 38 10 323 345 126
14 120 116 106 16 6 17 36 133 148 197 202 171 175 334 331 328 342 331 298 232 145 189 176 190
15 266 346 300 338 340 1 50 153 199 243 208 224 224 211 319 317 305 336 317 271 154 176 198 29
16 31 40 26 49 32 21 36 185 165 151 221 227 208 221 247 250 248 257 331 35 30 32 27 358
17 31 18 304 19 295 310 8 261 288 223 219 237 219 259 254 43 36 52 55 58 30 350 2 10
18 6 2 340 320 7 358 7 212 159 177 178 208 326 335 8 28 305 306 30 30 19 25 23 24
19 26 47 13 2 319 356 22 172 154 161 159 157 165 171 314 48 327 253 276 329 350 62 98 104
20 124 154 204 209 107 87 119 83 161 170 146 159 160 181 142 175 210 224 248 144 82 108 128 87
21 33 343 72 56 39 9 285 318 299 223 190 222 220 288 240 252 269 12 74 219 42 335 350 22
22 6 4 85 19 13 21 42 185 173 171 193 187 330 269 313 298 263 330 63 122 67 189 318 301
23 300 308 238 56 10 338 27 151 131 143 140 182 187 205 177 180 170 158 127 134 93 34 21 7
24 11 24 33 24 17 8 13 64 164 194 207 206 193 239 331 333 59 82 139 86 99 31 36 84
25 8 12 15 18 12 26 11 359 166 140 83 116 155 133 154 291 312 23 34 43 54 87 120 85
26 68 52 89 127 193 312 305 337 124 120 138 146 119 116 323 301 277 208 54 47 38 39 46 11
27 56 26 349 357 344 291 221 191 220 178 196 195 344 251 257 316 312 318 320 309 298 322 319 293
28 320 331 322 313 345 340 324 1 234 213 215 299 303 328 354 333 355 331 326 329 347 352 316 346
29 350 360 344 342 330 355 352 184 161 159 174 327 336 349 315 318 328 1 359 6 347 334 349 355
30 346 84 317 291 306 358 18 172 171 170 173 181 194 204 258 253 259 288 280 291 342 353 354 346
31 344 21 22 7 353 6 17 105 160 138 166 176 206 200 201 238 251 276 260 292 323 345 343 341
('
DENISON MINES (USA)CORPORATION
Wh~e Mesa Mill (Blanding,UT)Meteorological Site
July 2008
Hourly Sigma Theta (degrees)
DAYIHR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 M""Min Ave
1 7 8 5 16 53 16 13 48 27 24 30 48 42 35 31 28 17 20 30 14 11 6 11 8 53 5 23
2 22 14 27 5 4 7 14 30 20 25 39 33 47 64 35 51 32 25 25 43 26 60 52 24 64 4 30
3 20 27 29 16 12 9 17 40 37 40 51 29 41 51 15 33 64 41 42 5 5 5 14 24 64 5 28
4 14 35 48 19 10 35 37 32 16 26 34 38 34 34 35 38 56 58 8 11 5 5 41 20 58 5 29
5 34 19 9 9 5 29 34 45 37 39 52 41 24 29 16 39 29 14 9 10 11 30 25 15 52 5 25
6 5 4 16 24 48 12 50 60 20 26 30 36 66 12 28 73 42 44 18 13 8 21 28 18 73 4 30
7 46 52 18 34 32 41 16 24 44 64 39 51 19 48 31 59 19 17 10 22 9 6 8 5 64 6 31
8 5 5 8 49 34 8 7 54 45 27 30 39 72 54 24 25 25 35 13 10 5 4 7 54 72 4 27
9 14 25 24 57 29 12 22 55 29 30 34 36 39 44 67 56 39 49 16 11 25 30 14 36 67 11 34
10 31 10 35 21 31 24 37 19 42 42 38 35 45 76 56 57 57 33 16 22 69 7 52 11 76 7 37
11 11 14 20 36 44 42 44 16 21 26 30 27 27 24 29 21 39 31 9 9 11 75 32 44 75 9 28
12 14 13 29 10 7 10 12 59 21 29 37 27 49 29 37 15 14 12 16 17 12 64 13 13 64 7 23
13 10 13 32 34 18 13 22 18 21 30 37 34 36 45 51 20 85 27 8 7 17 13 16 52 65 7 27
14 11 13 40 9 5 9 10 43 21 41 30 53 50 25 8 9 20 17 18 62 20 8 9 17 62 5 23
15 26 10 57 15 8 13 15 34 22 34 61 43 33 41 18 15 19 12 16 13 35 19 10 46 81 8 26
16 13 10 7 11 13 5 21 29 40 34 31 46 24 25 31 23 20 14 62 8 7 7 7 25 62 5 21
17 17 23 20 19 27 51 69 38 38 41 51 42 42 44 46 10 10 12 17 19 31 5 21 12 69 5 29
18 5 6 30 12 10 18 54 30 37 32 27 32 48 12 18 42 25 20 13 7 6 5 5 5 54 5 21
19 35 41 9 6 20 38 47 37 29 24 27 39 38 68 59 55 50 50 58 13 9 29 42 18 68 6 35
20 9 18 17 56 12 40 12 33 27 24 25 29 34 38 33 27 13 9 13 48 22 15 18 27 56 9 25
21 28 41 57 25 15 14 16 15 29 42 34 34 55 62 58 43 41 58 24 49 13 37 19 17 82 13 34
22 16 21 51 30 10 8 13 27 22 25 31 36 45 46 16 33 55 33 52 57 51 56 26 19 57 8 32
23 8 13 49 69 9 31 25 18 50 29 28 28 31 30 38 28 25 35 25 14 16 16 9 5 69 5 26
24 12 8 10 9 5 7 10 32 35 27 45 30 35 36 43 57 20 16 59 45 54 49 19 38 59 5 29
25 7 6 5 7 6 25 11 25 64 34 36 43 26 29 41 39 15 28 10 9 8 13 22 34 64 5 23
26 21 38 61 30 31 16 8 21 40 27 25 18 46 60 66 24 30 52 11 11 10 11 11 16 66 8 29
27 39 10 8 15 44 35 53 31 29 46 34 21 53 36 11 39 9 10 6 13 17 7 6 10 53 6 24
28 11 17 18 33 21 15 25 24 38 28 82 46 20 24 15 16 21 14 9 8 6 7 37 14 62 6 22
29 10 4 10 12 27 9 74 13 16 20 43 59 25 36 30 29 23 23 12 5 19 8 4 26 74 4 22
30 24 38 62 15 11 46 14 40 19 24 27 25 25 31 26 22 18 19 11 10 9 8 5 3 62 3 22
31 3 79 17 6 51 8 9 39 21 26 31 22 27 33 32 33 27 26 9 10 8 3 3 4 79 3 22
Maximum hourly value =
Minimum hourlyvalue =
Average hourly value =
79 degrees
3 degrees
'Z7 degrees
r-.----
DENISON MINES (USA)CORPORATION
While Mesa Mill (Blanding,UT)Meteorological Site
July 2008
Hourly Stability Class
DAYIHR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1 E E E D F C C A A 8 8 A 8 A A A C 8 8 D D D D D
2 D D F E E D C A 8 8 A A 8 D 8 C A C 8 E D D E E
3 D E F E D D C A A A A 8 8 A D C A A A E E D D D
4 D F F E D A A 8 C C 8 8 8 8 A A A A D D E E E D
5 F E D D E A A A A A A A C C D C D C D D D F F D
6 E E D F F D A A B A A 8 C D A A D D 8 D D D E F
7 F F D F F A C A A A A C 8 B 8 A C C D D D E D E
8 E E D E F D D A A 8 B A A 8 C C C 8 C D E E E E
9 D E F F F D 8 A A 8 8 8 B 8 A A A A C D F F D D
10 E D F F F A A 8 A A A A A A A 8 A A C F F E D D
11 D D F F F A A C 8 B 8 8 8 8 8 8 8 D D D D D F F
12 D D F D E D D A 8 A A A A 8 8 D C D C E D D D D
13 D D F F F C B 8 8 A A 8 8 B B D A 8 D E E D D F
14 D D F D E D D 8 8 A A A A D D D C C 8 F E D D D
15 F D F D D C C A 8 A A A 8 8 D D C D C E D D D F
16 E D E D E D B A A A 8 8 C C C D D C D D D D D F
17 E F D D F A A A A A A B 8 8 C D D D C F F E D D
18 E E F D D 8 A A A A B 8 B D C A C C C E E E E D
19 D F D E F A A A 8 8 B A 8 8 A A A A 8 D D D D D
20 D D D D D A D A 8 8 B B 8 8 B 8 D D D E F D D F
21 F F F F E C C C A A A B A A A 8 8 C A E D D E D
22 E E F F D D C A 8 8 8 B C C C 8 A A 8 D F F F D
23 D D F F D A A B A A A B 8 8 B C C 8 A D D D D E
24 D D D D E D D A A A A B B 8 C 8 B D C D D E D F
25 E E E E E A D A A A A B C C 8 C C D D D D D D F
26 F F F F F C D B A B B 8 A A A C B A D D D D D E
27 F D D D F A A A A A A C D C D A D D D D D E E D
28 D D D F E C A A A A A A C C D D C C D D E E F D
29 D E D D F D 8 C 8 8 A 8 C C C 8 8 8 D E D D E F
30 E F F D D A C A B 8 8 C C C D D D D D D D D E E
31 E F D E F D D A 8 A 8 8 B C C C B C D D D E D D
r---.~
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
August 2008
10-Meter level Hourly Wind Speed (mls)
-,
DAYIHR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 16 19 20 21 22 23 24 Max Min Ave
1 5.1 2.8 4.1 3.0 3.5 2.3 2.6 1.5 2.3 2.5 2.9 3.3 2.7 3.2 4.0 3.8 3.2 3.5 2.5 3.3 3.3 2.2 2.9 3.2 5.1 1.5 3.1
2 2.7 3.5 2.9 2.7 3.1 2.1 1.5 1.5 2.7 2.8 2.7 2.4 2.5 3.0 2.7 4.3 7.4 5.4 4.1 2.9 3.2 4.3 3.3 2.9 7.4 1.5 3.2
3 3.1 2.6 2,6 2.2 1.6 3.1 1.8 1.5 3.2 2.8 3.5 3.2 3.1 3.3 4.0 2.2 6.4 6.6 6.8 4.4 2,9 2,0 1.8 2.7 6.8 1.5 3.2
4 3.1 3.1 3.5 2.8 1.2 2.3 1.5 2,0 2.1 3.6 3.5 2.7 2.8 2.6 3.1 3.2 4.7 2.7 2.1 5.3 5.9 4.7 2.9 3.4 5.9 1.2 3.1
5 2,2 2.9 2.6 2.6 1.7 2.5 1,2 1.4 2.9 2.1 2.4 3.5 4.0 4.0 3.6 3.0 3.3 4.2 3.0 9.2 5.4 3.6 4.5 4.1 9.2 1.2 3.3
6 4.5 3.6 2.9 3.7 2.9 2.1 2.8 1.7 1.7 1.6 1.8 4.2 2.5 2.2 1.8 1.9 1.3 1.2 4.5 3.7 3.2 2.4 2.3 1.3 4.5 1.2 2.6
7 1.8 3.5 2.5 2.5 1.9 2.4 2.2 2.3 1.5 1.6 2.6 2.6 2.9 2.6 2.9 6.1 4.6 3.5 4.7 4.1 4.3 3.7 2.8 2.6 6.1 1.5 3.0
8 2.8 3.5 3.2 3.2 1.8 1.7 3.2 3.9 2.9 1.8 2.5 1.9 1.8 2.3 3.3 3.4 3.5 3.7 8.4 7.9 4.3 2.3 1.7 2.3 8.4 1,7 3.2
9 3.4 3.7 2,9 2.1 2.5 1.6 1.1 1.9 2.3 2.2 2.2 1.9 2.6 5.6 4.9 3.5 2.4 4.9 5.2 4.6 3.4 3.9 3.1 4.0 5.6 1.1 3.2
10 3.9 2.4 2,6 2.6 2.4 1.5 2.0 1.3 3.4 2.3 2.1 2.4 2.9 4.5 3.0 4.0 4.9 5.7 4,5 3.7 2,8 2.6 4.0 3.7 5.7 1.3 3,1
11 7.0 7.4 5,9 4.2 3.1 2.8 2.3 0,8 2.1 2.6 2,8 3,6 3.7 4.9 4.5 3.9 5.1 4.7 4.9 3.8 3.8 4.4 4.1 4.8 7.4 0.8 4.1
12 5.6 5.6 5.4 3.7 3.1 2.5 2.0 2,3 1.4 1.4 2.6 2.9 3,5 2.8 4.0 3.5 4.0 3.4 2.8 4.0 4.2 4.5 3.9 5.0 5.6 1.4 3.5
13 3.8 4.4 5,2 3.6 3.4 4.6 2,6 2.2 3.0 2.8 2.2 2.3 3.5 4.8 4.7 3.4 3.9 1.7 1.3 4.1 3.1 2.9 5.3 4.5 5.3 1.3 3.5
14 3.6 2.1 3,7 4.3 3.2 1.2 1.3 1.9 2.6 2.3 2,6 3.2 3,5 4.2 4.5 5.8 6.4 6.9 5.0 2.7 4.4 5.4 5.1 4.7 6.9 1.2 3.8
15 3.8 3.6 3.1 4.1 4.7 3.3 2.0 3,0 3.8 5.6 6.5 4.7 5.2 4.6 4.1 5.4 4.1 4.1 3.5 3.8 5.1 6.1 6.7 2.5 6.7 2.0 4.3
16 4.4 5.1 3,1 2.5 5.5 3.9 2.5 1.8 2.1 2.8 2.5 3.4 5.0 7,6 8.9 4.8 4.8 3.7 4.5 5.0 6.2 4.3 1.6 2.5 7.6 1,6 4.0
17 2.0 2.6 3,7 3.4 3.9 3.4 3.0 2.8 2.3 2.0 2.9 2.2 2.5 5.2 7.3 6.9 7.6 5.5 4.9 5.2 4.6 4.6 4.0 2.6 7.6 2.0 4,0
16 3.6 4.1 4.3 4.5 3.7 1.9 1.6 1.4 2.9 3.5 3.1 3.7 8.4 4.9 4.4 4.6 5.0 4.2 3.3 4.2 5.7 5.0 4.2 4.2 6.4 1,4 3,9
19 4.1 2.9 1.9 1.6 3.8 3.8 1.7 2,4 3.2 2.5 2.9 2.8 3.1 3.5 4.4 4.6 5.9 6.8 5,8 4.0 2.1 1.8 3.4 3.6 6.8 1.7 3.5
20 3.0 1.3 1.9 1.9 3.0 3.2 2.6 1.6 2.0 3.3 4.4 4.5 6,3 5.8 5.3 6.0 6.4 6.0 5.2 3.4 2.4 3.2 3.5 2.1 6.4 1.3 3.7
21 1.6 2.3 3.4 2.7 3.1 2.8 2.1 2.1 3.2 3.9 4.0 4.5 4,5 5.0 4.9 5.0 4.6 5.3 5.4 3.7 2.0 2.6 2.9 1.9 5.4 1.6 3,5
22 1.9 1.8 1.9 2.2 3.1 2.8 2.2 1.8 2.3 3.4 3.7 3.6 3.4 4,2 2.7 2.9 3.0 3.1 2.5 2.8 2.4 4,2 4,8 2.5 4.8 1.8 2.9
23 2,9 1.7 2.3 3.7 3.9 2.3 2.8 1.8 2.8 2.9 3.4 3.3 3.2 3.9 3.5 3.0 3.2 3.8 3.7 3.5 4.2 4.4 3.9 6.5 6.5 1.7 3,4
24 6.3 6.0 3.0 2.7 2.0 2.1 2.1 1.8 3.1 3.0 2.2 2.7 2.6 2.3 2.0 3.3 4.7 5.5 6.2 5.0 4.4 3.5 5.5 6.8 6.8 1.8 3.7
25 5.5 3.7 1.4 1.6 2.3 3.9 3.6 1.7 2.5 3.6 3.4 3.2 2.6 2.9 2.6 2.7 3.3 3.3 5.1 5.4 6.3 7.7 3.5 4.8 7.7 1.4 3.6
26 4.1 3.1 1.5 2.4 2.9 2.3 1.6 1.3 2.7 2,9 3.2 3.0 3.4 3.3 4.0 5.7 2.2 2.5 4.1 3.9 2.7 1.9 2.1 1.8 5.7 1.3 2.9
27 2.2 2.3 1.8 2.2 2.2 0,8 1.7 1.5 1.6 1,7 2.3 3.1 3.4 3.0 2.6 2.7 2.2 3.0 5.2 4.0 4.1 4.4 5.3 5.7 5.7 0.8 2.9
28 5.5 4.3 1.8 2.9 1.8 2.3 2.1 1.3 1.8 1.8 2.1 2.3 2.0 2.5 2.2 2.3 3.0 6,1 6.7 4.8 5.1 5.1 3.6 3.3 6.7 1,3 3.2
29 3.2 3.1 2.9 4.4 4.6 3,6 2.4 2.6 4.2 4.7 3.5 3.9 3.7 2.9 3.0 2.7 2.2 3,0 2.3 1.9 2.6 3.8 3.1 4.1 4,7 1.9 3.3
30 2.7 2.2 4.5 6.7 6.4 5,4 5.0 3.8 4.2 4.7 4.6 4.1 4.0 4.6 4.1 3.7 3.6 3,3 2.3 3.1 2.7 2.9 4.6 4.7 6.7 2.2 4.1
31 2.9 4.5 2.0 1.5 1.5 2,4 2.8 1.4 2.2 2.4 2.5 3.3 3.5 6.4 3.2 3.3 3.2 3.9 3.6 2.8 1.7 2.2 1.4 2.1 6.4 1.4 2.8
Maximum hourly value =
Minimum hourly value =
Average hourly value =
9.2 m/s
0.8 m/s
3.4 m/s
r---.
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
August200S
1O-Meter Hourly Wind Direction (degrees)
DAYIHR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1 344 75 6 23 17 358 329 328 173 184 164 196 173 167 239 199 248 223 224 208 216 206 30 24
2 20 11 30 22 7 42 77 63 149 129 164 190 242 278 221 297 309 312 301 321 346 341 343 35£
3 329 333 354 308 348 12 13 153 115 167 163 122 176 173 228 271 251 267 285 287 305 307 230 48
4 131 176 180 172 72 14 27 147 127 150 175 211 220 285 253 290 323 330 274 73 99 134 112 104
5 84 19 24 26 30 13 354 128 166 173 119 157 153 188 175 132 194 150 148 136 78 58 28 6
6 30 41 53 106 86 39 28 12 43 124 157 224 248 357 48 88 32 329 358 3 357 330 308 330
7 61 104 65 52 66 52 46 102 120 160 150 174 197 172 212 291 292 285 327 332 42 49 20 1
8 103 114 114 98 59 109 136 138 141 113 56 76 207 231 231 277 257 267 281 345 6 133 209 23
9 349 356 350 335 332 324 3 203 205 202 108 206 220 342 319 330 294 288 317 311 314 331 327 9
10 17 348 338 344 1 290 285 78 206 210 182 217 194 298 340 310 317 326 310 312 322 10 356 359
11 27 36 28 8 298 334 337 311 150 194 194 217 232 247 280 317 323 319 334 341 8 358 357 350
12 345 337 340 330 5 12 34 168 207 360 186 188 232 247 314 33 359 6 19 20 356 349 347 336
13 356 338 341 340 335 324 354 153 216 75 57 360 253 305 1 5 256 250 197 323 12 335 356 18
14 11 334 301 322 351 188 207 226 232 227 204 198 215 272 336 339 344 356 357 8 28 22 18 6
15 7 8 328 351 350 15 24 330 24 9 1 5 327 347 356 312 320 317 351 16 27 32 33 25
16 13 7 340 310 344 340 321 167 170 217 205 212 228 253 260 298 287 336 343 152 187 203 198 21
17 26 19 18 15 17 16 24 53 110 142 159 165 219 336 353 351 348 353 3 350 335 337 330 2
18 9 356 3 360 342 321 49 78 169 179 204 236 330 347 347 327 323 336 358 354 353 337 321 313
19 342 4 130 358 11 19 40 124 160 165 195 203 206 202 216 227 257 255 256 251 258 351 355 353
20 352 5 47 28 32 29 29 73 168 193 201 =231 238 260 276 283 279 280 284 352 21 7 8
21 8 38 34 47 34 35 38 99 178 179 195 214 230 213 223 216 228 243 250 259 299 318 338 347
22 27 30 35 35 24 28 24 59 154 177 176 212 194 199 211 206 226 234 216 227 313 338 347 353
23 357 325 31 15 16 12 17 77 158 162 165 174 180 197 258 222 249 256 270 310 345 359 4 124
24 124 124 118 89 76 133 42 98 125 130 200 267 250 29 2 321 330 30 58 16 253 205 107 140
25 124 105 59 29 8 343 337 11 142 145 142 147 184 246 245 183 142 188 311 325 5 28 27 86
26 98 54 31 351 346 358 34 141 159 160 192 212 206 220 235 34 28 158 189 197 186 157 44 38
27 39 21 17 356 358 308 359 27 250 206 =208 200 226 198 348 24 339 347 357 358 351 342 340
28 347 360 49 149 174 280 11 122 139 210 35 342 35 60 119 229 288 334 339 339 332 336 12 349
29 313 141 31 16 12 16 29 60 134 146 147 161 147 169 181 275 158 225 206 184 340 8 25 17
30 85 57 143 142 136 147 157 150 144 140 148 173 179 178 176 150 164 180 159 137 136 109 212 257
31 211 204 289 309 104 180 194 191 181 236 216 208 191 288 71 43 98 133 136 134 95 144 122 127
~--~
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
Augusl200B
Hourly Sigma Theta (degrees)
DAY/HR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Max Min Ave
1 3 58 4 10 7 12 12 63 34 37 34 26 43 58 24 42 50 24 25 11 21 37 12 8 63 3 27
2 7 5 19 14 26 26 27 3B 17 31 37 36 50 44 58 40 9 12 18 5 13 14 30 20 58 5 25
3 20 27 25 47 49 6 9 27 19 30 22 33 57 36 45 56 19 15 9 6 20 21 48 12 57 6 27
4 41 17 18 14 39 15 26 29 41 20 16 27 22 40 29 32 16 18 12 11 12 15 16 11 41 11 22
5 16 13 19 6 13 6 58 22 16 38 49 38 31 32 3B 58 46 33 19 19 10 20 8 10 58 6 26
6 7 9 16 19 13 9 12 18 33 48 44 19 37 58 50 83 43 61 24 8 16 46 13 16 63 7 28
7 34 13 16 8 10 14 13 18 30 3B 33 32 51 46 38 14 17 31 13 19 12 9 12 15 51 8 22
8 37 12 11 16 30 17 15 12 17 38 19 62 62 51 56 24 25 21 32 9 32 45 44 24 62 9 30
9 9 6 18 15 18 25 48 20 28 39 51 56 51 42 16 17 43 11 11 6 5 6 30 32 56 5 25
10 13 24 22 29 22 22 15 50 15 36 58 50 49 40 31 24 18 11 13 8 20 14 6 43 58 6 26
11 11 13 10 32 25 20 32 70 38 30 28 33 30 22 42 29 19 17 12 10 11 4 2 7 70 2 23
12 5 5 6 13 37 20 25 19 44 59 49 37 44 62 57 24 33 11 13 14 5 10 13 4 62 4 25
13 20 10 7 11 22 14 24 48 37 22 45 59 60 47 22 27 24 57 57 28 21 19 21 9 60 7 30
14 8 26 14 11 20 72 52 18 20 28 33 30 31 45 45 28 21 12 13 23 10 20 6 14 72 6 25
15 20 18 10 7 13 33 50 13 39 28 16 30 27 26 36 29 30 34 14 6 8 8 7 21 50 6 22
16 8 8 18 26 10 26 44 33 32 3B 48 31 27 20 20 37 35 18 22 57 10 9 53 12 57 8 27
17 14 6 5 4 6 5 10 18 35 54 40 70 74 31 16 19 15 18 10 7 8 5 11 13 74 4 21
18 9 5 4 5 17 28 23 52 15 20 30 55 18 25 23 32 19 17 13 4 3 18 15 17 55 3 19
19 9 18 46 34 5 5 16 45 22 32 34 31 30 36 43 27 21 15 10 8 14 23 5 9 46 5 22
20 11 47 13 12 8 7 10 32 26 26 22 24 19 22 26 16 21 14 12 9 32 6 9 12 47 6 18
21 13 29 9 9 6 8 9 46 17 15 27 19 27 25 25 25 24 19 10 7 12 4 21 40 46 4 19
22 11 12 16 11 7 6 10 37 25 16 27 28 33 32 51 41 46 27 13 19 20 5 4 18 51 4 21
23 17 32 23 5 5 6 5 38 23 26 25 29 38 45 51 53 38 25 12 19 7 6 5 13 53 5 23
24 11 12 12 17 45 40 31 51 20 26 65 45 49 39 49 73 20 40 12 32 17 40 17 15 73 11 32
25 10 11 44 41 22 5 7 41 34 28 31 32 36 39 54 46 31 20 36 14 27 12 26 21 54 5 28
26 15 22 25 10 6 10 14 50 42 29 30 30 27 35 60 17 48 30 15 7 17 25 50 19 60 6 26
27 10 14 11 9 13 50 19 69 37 45 33 34 26 48 45 70 41 23 7 8 6 11 7 5 70 5 27
28 8 22 22 28 34 59 18 58 29 66 62 73 61 41 4B 53 53 11 7 11 5 6 24 16 73 5 34
29 23 34 39 14 6 8 11 30 17 19 32 26 33 21 36 50 60 29 15 7 26 10 16 7 60 6 24
30 28 34 12 11 11 12 15 18 21 18 24 29 24 25 26 36 26 21 25 9 8 18 41 22 41 8 21
31 26 18 30 26 25 25 8 48 21 34 34 22 21 63 35 15 25 16 12 16 26 12 20 15 63 8 25
Maximum hourly value =
Minimum hourly value =
Average hourly value =
74 degrees
2 degrees
25 degrees
f'
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,Un Meteorological Site
August 2008
Hourly Stability Class
DAYIHR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1 D F E D E D D A A A A B A B C B B B A D D F D D
2 E E E D E A A A C A A A A B A C D D C E D D E E
3 D F F F F D D A B A B B B B C A D D D E E F F D
4 E D D D F C A A A B C A B A B B C B D D D D D D
5 E D E D E D A B C A A B C C B B B C B D D D D D
8 E D D D D D D B A A A C A A A A A A C D D F E E
7 F D D D D C C B A A A A A A A D C B C D D D D D
8 F D D D F C C D C A B A A A B B B B D D D F F F
9 D E E E E A A B A A A A A C C C A D D E E E E D
10 D F E F E B C A C A A A A C B C C D C D E D E D
11 D D D D E B A A A A A B B C C B C C D D D E E E
12 D D D D E B A B A A A A B A C B C D C D E D D D
13 D D D D D C A A B B A A B C C B B A A D D E D D
14 D F D D D A A B B A A B B C C C D D C F D D D D
15 D D D E D B A C B C D C C C C C C C C E D D D E
16 D D D F D B A A A A A B C D D C C B C D D D F D
17 E E E E E D D B A A A A A C D D D C D D D E D D
18 D E E E D A A A C B B B D C C C C C C E D D D D
19 D E F F E D C A B A A A B B C C C D D D E F E D
20 D F E D D D D A A B C C D C C D D D D D F E D D
21 E F D D E D D A C C C C C C C C C C D E D E E F
22 D D E D E D D A A C B B B C A A B B D E E E E E
23 D F F E E D D A A A B B B B B B B B D D E E E D
24 D D D D F A A A B B A A A A A B C C D D D E D D
25 D D F F F D D A A B B B A A A A B B D D D D E D
26 D D F D E D c A A A B B B B C C A A D E D F F F
27 D E D D E A B A A A A B B B A A A B D D E D D D
28 D D F E F A B A A A A A A A A A B D D D D D D D
29 E E E D E D D A C C B B B B B A A B E E F D D E
30 F F D D D D C B C C C C C C C B B B F D D E D D
31 E D F F F A D A B A A B B D B C B C D D F D F E
,,-"~
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
September 2008
10-MeterLevel Hourly Wind Speed (m/s)
DAYIHR 1 2 3 4 5 6 7 6 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Max Min Ave
1 1.9 1.0 1.1 0.7 1.6 1.4 0.9 3.1 5.0 5.6 6.0 5.9 5.2 5.2 7.1 7.3 6.8 6.5 5.5 5.5 5.1 5.1 4.8 3.2 7.3 0.7 4.2
2 1.9 3.0 2.2 3.6 2.0 2.5 1.5 1.2 1.2 2.2 1.8 2.7 2.6 2.4 2.5 2.0 2.1 2.0 0.9 1.5 2.0 2.7 2.1 2.9 3.6 0.9 2.1
3 2.1 2.3 3.1 2.8 3.0 2.8 3.1 1.7 2.4 3.0 3.3 3.2 3.7 3.3 4.3 3.4 3.2 2.9 4.6 5.0 5.1 5.2 4.9 5.3 5.3 1.7 3.5
4 5.5 5.6 5.7 6.0 6.2 4.4 2.3 1.6 1.4 2.0 3.2 3.9 4.7 5.0 6.1 6.1 5.6 5.4 3.6 2.1 2.4 3.4 3.9 4.5 6.2 1.4 4.2
5 5.0 2.3 2.1 2.2 2.2 2.5 2.3 1.3 2.0 3.1 3.2 4.0 4.1 5.0 5.8 6.7 7.5 5.6 3.4 3.7 4.6 5.1 3.9 4.5 7.5 1.3 3.8
6 5.8 4.9 3.1 2.2 1.8 2.5 2.9 1.7 2.2 2.1 3.0 2.7 3.2 3.3 3.4 2.7 2.8 2.7 2.2 4.4 3.1 2.4 3.2 3.6 5.8 1.7 3.0
7 2.8 2.3 2.5 3.3 2.6 3.0 2.8 1.4 1.7 2.2 2.6 2.8 3.4 3.6 4.1 4.3 4.5 3.6 3.3 4.5 5.7 5.8 5.0 5.0 5.8 1.4 3.5
8 3.1 2.7 2.3 2.4 3.5 2.8 2.0 1.7 2.2 2.9 3.0 3.0 2.7 2.7 2.6 2.7 1.9 1.9 2.0 1.5 4.0 4.0 1.9 1.9 4.0 1.5 2.6
9 3.5 3.8 3.1 2.3 1.5 1.4 1.3 1.7 3.9 3.5 3.4 3.1 3.9 2.3 3.1 3.5 5.0 1.5 2.0 2.8 2.8 1.5 2.3 3.3 5.0 1.3 2.8
10 2.8 3.3 2.7 2.2 1.9 2.0 2.7 3.2 3.6 3.6 3.9 3.1 4.9 7.8 7.1 5.3 4.5 3.9 5.5 2.7 2.0 1.6 2.4 2.2 7.8 1.6 3.5
11 2.8 2.7 2.4 2.6 2.5 2.5 1.5 1.2 1.9 3.3 2.6 2.2 2.8 3.2 3.4 2.9 3.5 1.9 5.1 3.6 2.5 2.2 2.3 2.3 5.1 1.2 2.7
12 4.8 5.0 3.3 2.2 3.7 3.5 2.2 1.2 1.1 3.0 2.4 3.0 2.5 3.6 3.3 2.2 4.8 6.4 6.2 4.8 5.5 4.8 4.1 4.3 6.4 1.1 3.7
13 4.5 3.0 3.4 5.4 4.9 3.8 2.7 2.0 2.0 1.7 2.1 2.8 2.3 3.1 4.9 5.2 6.0 6.1 5.2 4.9 5.1 4.9 5.0 5.3 6.1 1.7 4.0
14 5.4 4.6 5.0 5.0 5.2 4.4 3.5 2.7 4.0 4.3 3.9 3.7 2.9 2.9 2.5 2.3 2.8 3.3 3.0 2.1 4.1 3.1 2.7 4.0 5.4 2.1 3.6
15 3.9 4.4 4.4 4.4 2.5 1.5 3.0 2.1 2.2 3.0 2.5 2.4 2.6 3.4 2.9 2.0 2.4 2.5 2.4 1.7 2.5 3.6 3.9 2.9 4.4 1.5 2.9
16 4.1 3.9 2.5 1.5 2.3 2.7 1.6 1.7 3.6 4.2 2.9 2.7 2.7 2.7 3.0 2.8 2.4 2.3 1.6 1.7 2.3 3.4 3.9 4.0 4.2 1.5 2.8
17 4.5 2.3 2.5 2.5 2.9 2.8 1.8 2.4 3.0 2.4 2.3 2.0 2.5 2.2 5.7 3.6 2.1 3.1 3.5 3.3 2.6 4.4 3.5 3.2 5.7 1.8 3.0
18 3.5 3.4 3.0 2.0 3.2 2.6 1.4 0.9 1.3 3.2 3.0 3.3 3.4 3.9 3.8 2.8 2.0 5.5 3.9 1.4 3.4 3.4 3.6 4.4 5.5 0.9 3.0
19 3.4 2.1 3.6 2.8 2.4 2.2 2.2 1.5 2.3 2.7 3.1 3.0 3.0 7.7 7.5 3.5 3.8 2.3 1.3 2.6 3.5 2.7 3.2 2.3 7.7 1.3 3.1
20 1.3 3.4 2.8 2.1 2.5 3.1 2.5 1.4 2.4 2.9 3.7 3.2 3.7 5.0 5.7 6.0 5.5 2.5 2.7 3.0 1.2 1.5 1.3 1.7 6.0 1.2 3.0
21 1.4 1.7 2.1 1.4 1.6 2.6 3.1 1.9 3.7 4.3 5.2 6.1 7.5 7.1 7.5 7.1 6.9 5.4 3.3 2.9 2.0 1.0 1.7 3.6 7.5 1.0 3.8
22 3.0 2.0 2.0 2.1 2.5 3.1 2.3 1.4 2.1 3.3 5.8 7.4 8.4 7.4 7.0 6.9 5.7 4.8 3.5 3.5 3.8 3.8 3.8 1.9 8.4 1.4 4.1
23 3.3 2.9 0.7 2.5 2.9 2.2 2.3 1.0 1.6 1.3 1.9 2.9 3.1 4.4 4.7 3.6 3.9 3.6 3.3 1.6 3.8 4.2 3.4 3.7 4.7 0.7 2.9
24 4.3 4.1 3.8 2.7 2.2 1.7 1.3 2.1 1.7 2.5 2.9 2.9 2.6 3.0 3.1 3.4 2.4 2.7 2.0 1.7 4.0 4.0 4.2 3.7 4.3 1.3 2.9
25 3.3 3.6 2.8 3.4 2.4 1.0 1.0 1.3 3.1 3.7 3.2 3.3 2.8 2.8 3.0 2.6 2.8 2.4 1.4 1.4 3.5 3.4 3.3 3.0 3.7 1.0 2.7
26 2.0 2.7 2.3 3.2 3.3 2.3 2.2 1.1 1.7 3.0 3.2 2.7 3.5 3.9 4.8 2.1 3.9 4.4 3.7 4.3 4.4 4.4 3.4 1.8 4.8 1.1 3.1
27 3.1 2.2 2.5 3.3 4.8 4.8 2.3 3.2 2.1 2.4 3.7 5.1 5.3 5.8 5.6 5.3 8.5 11.9 10.3 '5.2 2.5 2.9 3.6 3.9 11.9 2.1 4.6
28 3.5 3.4 3.7 3.2 4.0 3.2 2.0 1.6 1.3 1.9 2.4 2.7 2.6 2.8 2.2 2.5 2.8 5.9 4.8 3.9 1.9 3.2 3.5 3.2 5.9 1.3 3.0
29 3.9 4.4 3.0 3.4 4.0 2.6 2.'5 1.4 1.8 3.6 3.7 3.0 3.3 3.3 3.8 3.4 1.9 2.1 1.5 3.2 4.0 4.1 3.7 2.9 4.4 1.4 3.1
30 4.1 3.8 2.9 3.4 2.8 3.0 2.'5 1.1 2.2 4.0 3.3 2.2 2.3 2.0 1.7 2.1 2.6 2.4 2.4 2.1 3.3 3.9 4.0 3.1 4.1 1.1 2.8
Maximum hourly value =
Minimum hourlyvalue =
Average hourly value =
11.9 m/s
0.7 m/s
3.3 mi.
r""
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
September 2008
10-Meter Hourly Wind Direction (degrees)
--".,
DAYIHR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1 146 130 128 47 185 163 147 173 184 183 182 173 191 221 252 268 289 278 278 327 327 325 324 347
2 222 263 286 293 326 335 329 31 326 246 150 211 206 236 229 207 220 249 295 191 49 39 24 23
3 353 326 339 35 35 37 30 53 178 161 175 168 231 254 231 260 226 191 349 359 5 1 351 358
4 357 353 350 356 356 357 203 285 228 188 197 208 215 217 229 257 263 257 256 273 4 13 13 359
5 1 101 42 276 320 28 18 268 174 176 182 189 207 225 279 276 283 293 318 6 21 15 9 349
6 347 349 46 5 59 50 38 65 204 208 204 190 253 244 234 222 177 147 346 23 53 8 59 61
7 44 13 23 38 74 56 55 82 211 182 204 187 214 240 245 251 280 270 355 31 24 25 33 31
8 16 268 298 7 8 39 44 165 179 209 206 214 202 227 228 265 166 239 25 60 24 56 194 333
9 57 65 92 94 75 87 174 208 204 195 160 68 71 92 173 184 200 177 186 43 41 27 69 50
10 57 36 34 49 32 75 132 145 139 128 131 143 188 180 358 6 17 92 144 173 203 360 3 23
11 13 3 360 2 359 5 5 317 126 141 149 182 191 192 202 215 216 236 160 61 33 37 4 77124216217357356203152304 333 308 280 220 176 11 348 341 346 355 347 340 347 11
13 16 2 1 352 353 346 314 285 234 238 278 349 253 38 298 312 332 329 334 333 334 336 328 339
14 352 338 332 329 332 334 352 148 105 138 168 173 152 157 209 228 214 200 189 331 358 7 18 1
15 358 360 2 5 102 46 14 342 176 159 198 181 174 186 144 180 203 191 182 19 10 8 7 24
16 12 2 5 71 21 23 38 104 138 144 130 180 126 196 203 205 206 214 146 15 15 360 10 24
17 16 62 10 21 23 15 44 129 156 162 149 180 136 217 314 313 321 312 226 221 2 23 11 9
18 11 9 9 27 14 11 360 34 203 222 193 205 222 251 322 239 21 41 26 27 346 355 350 348
19 339 78 15 9 20 12 5 62 117 143 168 169 194 347 352 290 249 264 296 342 354 347 7 2
20 46 20 26 31 29 6 7 49 171 141 175 184 180 192 196 206 217 208 229 176 22 41 292 11
21 21 44 8 8 9 19 18 65 184 168 182 201 211 209 213 220 233 237 248 238 212 40 204 205
22 219 157 163 144 25 18 37 83 152 172 195 214 218 221 248 250 265 266 285 1 15 344 311 350
23 358 14 269 39 21 288 11 44 73 218 227 247 223 227 227 234 242 282 257 257 24 26 34 40
24 34 28 26 22 30 27 319 31 76 194 203 190 157 173 158 190 191 179 212 68 60 52 51 51
25 57 65 73 71 74 345 313 96 181 211 212 242 232 192 188 172 200 184 221 72 60 60 56 50
26 76 68 76 73 59 76 69 41 220 228 226 234 218 249 286 336 68 57 18 14 5 6 8 15
27 40 360 167 44 20 27 34 23 98 176 167 167 165 155 182 161 69 28 16 229 252 355 12 356
28 43 6 6 11 12 9 24 11 69 227 230 212 187 206 241 177 32 40 357 11 22 360 34 34
29 30 16 23 24 9 12 17 38 148 137 151 102 132 113 133 165 147 169 116 12 1 2 12 21
30 20 12 29 16 20 9 5 13 158 154 160 195 208 258 176 221 237 235 261 310 353 355 360 350
~~
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
September 2008
Hourly Sigma Theta (degrees)
-',
DAY/HR 1 2 3 4 5 6 7 6 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Max Min Ave
1 12 29 23 57 20 16 47 10 9 12 12 15 26 16 13 12 11 11 9 10 12 11 9 29 57 9 18
2 59 18 42 16 23 16 30 40 52 41 78 48 63 52 33 59 40 43 65 7 62 8 27 20 78 7 39
3 25 19 14 16 15 7 11 45 23 25 24 31 37 42 31 38 23 43 9 8 5 3 5 6 45 3 21
4 5 4 5 8 6 43 15 37 33 33 20 23 20 19 26 25 16 11 9 18 22 3 2 12 43 2 17
5 10 48 15 20 38 13 11 53 23 16 19 21 20 24 21 12 12 11 21 5 5 6 12 8 53 5 19
6 8 8 31 41 25 10 7 52 24 32 22 62 34 37 36 64 45 38 34 29 24 44 8 12 64 7 30
7 38 40 26 22 4 8 7 19 29 33 29 27 29 32 33 21 38 20 41 30 5 6 22 13 41 4 24
8 33 63 49 22 9 11 59 64 21 22 26 22 32 37 53 60 41 32 57 24 29 65 31 67 67 9 39
9 8 13 48 51 50 35 53 33 13 21 34 12 15 39 26 34 16 42 47 16 9 38 18 8 53 8 28
10 22 7 11 8 14 27 15 18 19 20 28 33 21 47 30 19 33 35 26 19 13 45 12 9 47 7 22
11 7 4 4 5 11 4 13 37 34 22 44 53 44 33 33 32 27 30 19 67 29 29 63 46 67 4 29
12 14 11 20 10 5 4 11 33 59 38 42 41 59 28 50 58 21 9 7 9 12 17 27 7 59 4 25
13 8 11 9 5 6 8 17 25 26 55 73 31 73 40 28 20 17 10 6 3 6 5 5 6 73 3 20
14 4 11 11 6 6 12 45 23 17 28 19 21 36 43 63 42 28 19 7 38 12 7 15 10 63 4 22
15 10 4 4 6 58 27 7 13 33 27 29 39 35 25 43 48 51 14 7 48 11 8 4 24 58 4 24
16 5 5 13 21 16 9 18 47 17 21 38 33 37 37 40 39 37 34 32 7 7 3 8 9 47 3 22
17 6 65 16 11 7 9 16 27 21 38 47 59 50 80 30 27 34 35 32 6 54 5 4 3 65 3 28
18 3 3 3 19 5 5 25 29 42 16 25 27 26 25 37 62 69 16 32 21 11 5 6 7 69 3 21
19 66 70 6 8 7 7 8 27 21 24 25 25 31 29 14 34 16 22 47 19 22 29 6 28 70 6 25
20 43 7 13 7 8 5 5 73 24 22 16 24 30 25 18 15 13 11 14 27 44 16 52 30 73 5 23
21 15 17 9 58 16 8 9 40 21 18 21 21 19 16 18 15 15 13 8 5 43 40 38 6 58 5 20
22 14 40 16 38 9 5 14 36 53 17 15 15 13 17 15 18 14 11 19 16 5 12 13 43 53 5 19
23 25 10 65 28 27 10 26 20 39 53 48 29 37 24 25 21 24 15 7 68 7 8 7 11 68 7 26
24 5 5 3 8 18 40 56 11 41 23 22 34 44 26 32 30 22 20 16 20 16 18 25 86 66 3 25
25 12 14 5 7 8 69 29 44 19 19 29 26 37 35 24 30 24 18 37 17 22 70 23 64 70 5 28
26 50 34 28 13 5 6 14 50 30 21 28 31 27 21 38 33 46 22 11 16 3 9 9 12 50 3 23
27 11 51 34 15 16 6 13 6 57 30 24 19 21 25 20 22 50 14 9 52 66 18 19 31 66 6 26
28 15 25 8 6 5 5 22 11 69 38 33 40 41 33 48 60 31 16 9 9 39 15 7 5 69 5 25
29 8 4 5 10 6 11 17 54 26 28 24 37 32 38 40 37 48 29 50 7 5 4 6 9 54 4 22
30 5 5 11 8 9 6 5 33 22 15 29 51 38 57 59 34 15 9 15 24 6 7 4 17 69 4 20
Maximum hourly value =
Minimum hourly value =
Average hourly value =
78 degrees
2 degrees
24 degrees
~.~.
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
September 2008
Hourly Stability Class
DAY/HR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1 D F F F F C A D D D D C C C D D D D D D D D D E
2 F D F D F C A A A A A A A A A A A A F E F D F E
3 F F D D D D D A A B B B B B C B B A D D D D E D
4 D D D D D C C A A A B B C C D D C D D F E E E D
5 D F E F F C D A A C B C C C C D D D D E E D D D
6 D D E F F D D A A A B A B B B A A A F D E F D D
7 F F F D E D D B A A A A B B C C C B E D D D D D
8 E F F E D D A A B B B B A A A A A A F F D D F F
9 D D E F F A A A C B B D C A B B C A F D D F F D
10 E E D D E A C B B B B B C D D C C B D E E F D D
11 E E E E D D C A A B A A A B B A B A D D F F F F
12 D D D D E E D A A B A B A B B A C D D D D D D E
13 E D D D E D C A A A A A A B C C D D D E D E D D
14 D D D D D D B A C C B B A A A A A B E F D E D D
15 D E E E F F D C A B A A A B A A A C E F D D E E
16 E E D F E D B A C C A A A A B A A A F E E E D D
17 E F D D E D C A B A A A A A C B A B E E F E E E
18 E E E F E E A A A C B B B B B A A C D F D E E E
19 E F E D E E D A B A B B B D D B C B F E D F E F
20 F E D E D E D A A B C B B C C D C D D E F E F F
21 E E D F E D D A B C C D D D D D D C D E F F F E
22 D F E F D E C A A C C D D D D D C D D D E D D F
23 E D F F E D A B A A A A B C C B B C E F E D E D
24 E E E D F F A D A A B A A B B B B B E F D D D D
25 D D E E D F A A B B B B A A B A A B F E D E E E
26 F F F D E E C A A B B A B B C A B C D D E D D D
27 D F F D D E C D A A B C C C C C D D D D F E D D
28 D E D E E E B D A A A A A A A A A C D D F D E E
29 D E E D E D C A A B B B B B B B A F F E E E E D
30 E E D D D E D A B C B A A A A A C D D F E E E D
r
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
October 2008
1O-Meter Level Hourly Wind Speed (m/s)
DAYIHR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Max Min Ave
1 1.9 2.3 3.0 2.8 1.3 1.5 2.0 2.5 1.8 1.7 2.1 2.4 2.6 3.2 3.6 3.2 3.4 2.5 1.5 1.2 3.1 2.3 3.2 4.1 4.1 1.2 2.5
2 4.8 3.4 4.5 3.1 2.6 2.6 1.9 0.9 2.1 32 2.5 2.8 3.2 3.4 3.7 4.0 2.9 3.1 1.7 2.0 3.0 2.9 2.6 2.8 4.8 0.9 2.9
3 1.5 2.3 2.6 2.7 3.0 3.0 2.9 2.4 3.2 3.2 3.3 3.7 4.1 3.1 3.2 3.5 3.0 3.4 1.8 1.3 2.2 2.5 4.2 3.2 42 1.3 2.9
4 3.2 5.1 4.6 4.4 3.4 1.9 1.6 2.3 32 5.0 5.5 3.5 3.4 3.2 2.8 3.1 4.3 3.1 2.2 2.6 2.6 2.6 3.2 1.1 5.5 1.1 3.2
5 1.4 1.8 1.2 2.3 1.8 0.8 1.3 1.4 1.8 2.3 2.5 3.1 3.9 4.7 2.4 5.3 3.5 1.4 1.3 1.8 1.9 3.8 4.7 3.9 5.3 0.8 2.5
8 3.2 4.6 3.4 4.2 3.4 2.2 3.2 2.3 2.7 3.0 2.3 1.8 2.8 4.1 4.3 3.8 4.3 4.5 4.2 4.3 3.4 3.0 3.9 4.7 4.7 1.8 3.5
7 3.1 2.9 3.6 3.4 3.5 3.8 2.4 1.9 2.0 3.1 3.2 3.4 2.6 2.7 2.5 2.4 2.0 1.3 1.3 1.7 3.1 2.8 2.9 3.0 3.8 1.3 2.7
8 3.6 3.5 3.0 2.6 2.5 2.4 0.9 0.6 1.5 2.2 1.9 2.1 2.9 2.5 2.3 2.1 2.4 1.B 1.2 2.7 2.9 2.9 3.0 3.0 3.6 0.6 2.4
9 3.2 2.4 2.2 2.4 2.6 2.2 2.1 1.2 2.0 4.0 3.B 4.1 3.7 5.3 6.5 6.6 7.2 5.3 4.5 4.7 5.9 8.4 7.3 6.2 8.4 1.2 4.3
10 5.1 4.9 4.7 4.9 3.B 4.9 6.9 6.8 10.1 11.0 10.2 10.5 11.1 9.1 8.6 9.7 92 9.5 8.6 9.1 7.2 7.0 6.3 4.4 11.1 3.8 7.7
11 6.1 7.3 6.6 5.7 8.9 6.7 5.7 9.3 11.9 11.6 13.4 12.4 14.0 11.1 11.1 11.1 9.0 8.1 7.1 7.1 6.4 6.4 6.4 4.9 14.0 4.9 8.7
12 3.3 2.9 2.9 2.0 1.2 2.0 2.8 2.3 1.5 1.9 2.6 3.9 3.8 3.6 3.3 2.9 2.6 2.6 2.3 2.6 3.5 32 3.7 3.9 3.9 1.2 2.8
13 2.6 2.8 3.B 3.0 3.7 3.7 4.2 2.1 1.9 3.1 3.0 2.4 3.1 3.0 3.1 4.6 5.5 4.7 4.4 4.5 4.2 4.3 4.6 5.1 5.5 1.9 3.7
14 4.4 4.9 4.7 4.9 4.5 4.5 3.7 2.3 3.1 1.9 3.6 3.4 3.2 3.6 2.7 1.9 4.2 4.5 4.9 2.6 1.3 4.3 3.9 1.8 4.9 1.3 3.5
15 1.3 2.5 2.3 1.6 2.7 3.3 1.6 0.9 1.7 3.0 3.3 2.6 2.9 3.2 2.5 1.9 1.7 1.4 1.0 3.4 3.9 3.9 3.9 3.9 3.9 0.9 2.5
16 3.2 3.3 3.9 3.0 2.2 2.6 1.8 1.1 2.1 2.9 3.1 2.6 2.6 2.9 3.3 3.8 3.0 22 0.7 2.4 3.5 3.4 3.5 3.9 3.9 0.7 2.8
17 3.8 3.0 3.2 1.7 1.8 3.5 3.3 2.1 1.3 1.6 2.9 2.4 3.1 3.0 3.4 3.5 3.6 3.0 2.1 3.7 3.3 3.6 3.9 3.1 3.9 1.3 2.9
1B 2.8 2.5 3.6 2.6 1.9 3.1 1.4 1.6 1.7 2.5 3.5 2.3 2.2 2.4 2.3 2.3 2.6 2.5 1.B 1.3 3.1 3.7 3.0 2.9 3.7 1.3 2.5
19 3.7 2.5 1.B 1.5 1.5 2.2 2.4 1.4 1.6 1.9 2.5 3.0 3.5 3.6 4.2 2.B 3.3 3.1 2.1 2.7 3.3 3.9 3.9 3.B 4.2 1.4 2.6
20 2.8 2.8 2.B 2.1 2.8 2.5 2.3 2.8 3.3 2.7 2.3 3.9 2.0 2.9 2.6 2.6 2.0 1.8 1.9 2.6 4.0 3.5 3.4 3.5 4.0 1.6 2.7
21 2.4 1.9 2.5 1.9 2.9 3.1 2.7 1.8 2.2 2.3 2.7 3.7 3.4 4.1 7.5 7.6 7.3 9.5 7.5 6.8 6.9 7.5 5.2 4.B 9.5 1.8 4.5
22 2.5 3.3 4.6 5.1 5.7 5.5 6.0 5.6 4.1 5.5 7.6 4.2 4.5 7.4 7.0 4.8 4.8 3.6 2.1 2.3 3.0 2.3 3.4 3.9 7.6 2.1 4.5
23 4.0 4.6 3.5 3.5 3.5 2.9 3.5 1.6 1.9 3.6 3.9 3.6 2.2 3.5 4.0 4.4 4.2 3.5 2.9 3.2 3.8 2.5 0.8 3.0 4.6 0.8 3.3
24 2.5 1.9 2.1 2.6 2.0 3.1 3.1 1.5 0.9 2.0 2.7 2.4 2.5 2.9 2.9 2.5 5.9 3.6 4.3 4.6 4.0 3.9 2.B 3.8 5.9 0.9 2.9
25 3.3 2.9 1.6 1.9 2.9 3.3 3.5 2.2 2.0 2.6 1.7 2.4 2.6 3.2 2.8 1.9 1.5 1.6 2.5 2.8 3.4 3.4 3.7 3.3 3.7 1.5 2.6
28 2.6 2.2 2.2 2.0 1.7 2.4 3.1 1.7 1.8 3.7 6.8 7.4 6.9 8.1 8.5 8.4 7.5 5.0 5.1 5.6 5.6 4.1 4.1 1.7 8.5 1.7 4.5
27 2.7 3.9 2.1 1.5 1.3 1.4 2.8 2.0 2.2 3.2 3.3 2.8 2.2 2.4 2.2 1.9 1.8 1.2 0.9 3.5 3.0 3.8 3.4 3.2 3.9 0.9 2.4
28 3.1 3.5 2.8 1.7 1.3 0.9 1.3 1.1 1.0 1.9 1.9 2.1 2.5 2.5 2.6 2.9 2.8 2.1 2.3 3.2 2.9 2.7 3.0 2.2 3.5 0.9 2.3
29 1.3 1.6 2.6 2.4 2.4 1.4 1.1 1.2 1.7 1.9 2.7 2.2 2.7 2.4 2.5 2.4 2.1 1.2 2.0 3.1 2.1 2.5 3.2 2.9 3.2 1.1 2.2
30 2.6 1.8 1.3 1.5 1.3 1.2 1.4 1.7 1.0 1.7 2.5 2.3 2.4 2.6 2.4 2.6 1.9 1.8 3.5 3.6 2.5 1.0 3.1 3.2 3.6 1.0 2.1
31 3.1 3.8 3.0 1.3 2.4 3.2 1.8 1.8 1.0 1.7 1.2 1.8 1.5 1.2 1.5 1.8 1.7 1.3 3.1 3.6 3.2 2.7 2.7 3.0 3.8 1.0 2.2
Maximum hOUrly vafue =
Minimum hourly value =
Average hourty value =
14.0 m/s
0.6 m/s
3.3 mls
r-
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
October 2008
10-Meler Hourly Wind Direction (degrees)
DAY/HR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1 27 67 7 357 349 307 34 20 91 139 149 175 201 195 208 212 194 203 194 284 351 347 357 8
2 12 34 15 5 322 321 327 27 118 154 167 191 181 208 215 195 210 193 206 328 15 18 5 357
3 20 38 24 29 35 15 22 13 52 70 143 138 130 139 179 186 147 163 138 119 157 168 179 185
4 173 176 174 169 168 193 177 158 180 186 174 189 243 284 233 186 177 162 153 142 139 132 161 139
5 48 30 13 333 20 34 49 21 167 196 213 237 246 202 70 86 58 35 68 285 327 309 310 354
6 340 310 323 332 328 348 324 329 303 309 305 286 26 341 327 311 317 329 349 333 355 336 9 16
7 350 354 342 343 359 345 26 360 139 165 175 184 195 197 189 193 185 189 183 311 341 359 3 9
8 9 10 8 9 15 10 333 195 178 158 169 192 214 200 202 198 183 190 44 6 2 3 4 8
9 11 3 14 29 18 40 18 _268 189 156 167 188 185 193 191 194 209 213 208 190 202 212 209 185
10 169 176 180 185 184 181 185 181 185 187 187 209 217 209 208 203 201 194 193 194 195 201 191 169
11 176 178 176 169 171 173 182 182 185 201 206 208 209 226 226 235 248 236 261 262 255 262 264 255
12 230 199 205 210 257 56 28 41 312 196 250 216 218 228 220 212 210 221 235 309 17 1 3 7
13 13 351 342 329 333 337 338 323 283 278 273 216 296 327 342 41 30 10 337 332 335 339 334 335
14 343 335 338 335 334 327 324 328 310 238 199 215 222 193 152 100 334 338 334 323 318 360 321 329
15 66 23 27 53 20 31 2 39 101 142 162 156 156 169 160 182 195 181 32 22 15 16 16 16
18 16 31 33 31 20 351 349 185 211 179 193 214 207 213 217 224 226 178 91 30 23 15 13 22
17 19 31 13 319 69 10 358 6 246 197 202 202 209 203 214 238 229 224 251 8 3 16 11 4
18 300 9 15 13 14 359 349 300 258 188 140 173 191 190 201 200 195 180 175 9 1 355 350 355
19 357 355 7 28 354 355 3 2 187 156 169 199 195 185 180 211 201 182 162 23 19 24 17 17
20 16 24 50 66 38 29 286 71 163 181 133 65 338 271 233 278 255 259 298 6 24 23 21 11
21 341 6 22 28 33 43 41 52 120 151 186 186 207 224 256 290 314 343 345 324 320 343 336 19
22 322 194 196 177 177 190 179 157 251 79 15 10 340 310 309 7 16 32 43 47 358 52 40 19
23 21 29 20 2 330 310 22 345 288 250 250 266 287 238 238 -243 237 218 236 356 22 9 352 15
24 18 316 350 359 354 12 15 15 202 182 180 175 172 211 195 198 356 3 15 348 359 348 351 347
25 2 34 35 25 10 23 21 36 101 131 175 205 223 221 203 190 148 83 28 4 26 32 27 22
26 22 24 29 41 17 29 35 30 327 86 56 61 57 66 70 44 38 24 333 337 343 337 343 5
27 21 44 61 86 26 349 325 322 189 142 159 175 172 153 176 208 197 211 10 16 15 30 39 37
28 47 29 46 59 9 330 341 29 230 189 176 218 234 225 238 236 231 270 16 28 27 22 46 26
29 12 314 319 313 313 307 322 75 102 167 191 198 203 218 203 209 213 167 31 24 24 11 18 25
30 39 40 23 51 68 64 19 10 301 202 184 192 222 211 216 239 228 71 49 28 43 38 55 54
31 61 73 88 66 79 55 31 44 23 211 162 253 247 224 222 204 198 118 33 21 19 29 26 32
"--".
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
October 2008
Hourly Sigma Theta (degrees)
DAY/HR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 16 19 20 21 22 23 24 Max Mm Ave
1 43 33 6 11 45 52 11 11 38 31 29 37 28 28 30 30 22 12 18 63 27 11 14 5 63 5 26
2 4 33 4 10 9 11 8 47 27 22 30 28 29 20 18 16 27 12 27 46 9 8 6 4 47 4 19
3 15 6 4 4 31 21 15 28 21 72 45 19 21 27 33 23 21 11 14 38 16 13 6 13 72 4 22
4 8 9 7 8 8 14 15 14 24 20 22 25 19 18 16 11 15 11 12 9 10 14 10 27 27 7 14
5 46 15 15 68 18 31 36 36 17 14 24 23 20 48 28 9 10 18 46 35 30 16 11 13 68 9 26
6 24 10 14 15 16 36 16 29 15 19 45 63 51 35 25 24 15 10 7 7 15 23 18 19 63 7 23
7 17 16 20 19 26 28 17 42 48 22 17 22 24 23 31 28 25 15 14 39 16 9 12 7 48 7 22
8 5 4 5 5 6 6 33 74 24 25 30 35 26 25 28 24 14 14 46 8 4 4 4 6 74 4 19
9 6 20 9 12 9 15 13 67 28 16 18 20 22 15 16 13 9 9 9 7 8 8 7 10 67 6 15
10 8 7 6 7 10 9 7 8 8 9 11 13 10 15 13 13 12 7 7 7 7 9 12 9 15 6 9
11 7 7 7 10 8 9 7 8 8 10 11 9 15 10 11 14 11 11 12 10 10 10 10 14 15 7 10
12 8 13 10 13 43 18 10 12 77 52 43 25 24 32 35 43 28 16 24 29 5 13 8 7 77 5 25
13 22 14 11 12 10 13 11 37 27 21 31 55 37 39 42 26 25 18 9 6 6 7 6 7 55 6 21
14 7 7 6 6 7 6 10 14 16 37 15 19 23 22 37 60 21 8 7 37 51 8 17 39 60 6 20
15 51 11 22 27 13 7 45 21 32 25 26 27 24 24 36 45 22 11 51 6 4 3 3 3 51 3 22
16 4 4 5 7 12 8 44 36 27 25 26 25 29 25 21 21 16 14 58 8 4 7 7 9 58 4 18
17 4 8 11 47 50 6 7 26 34 32 22 26 18 19 21 17 9 5 45 6 10 6 4 9 50 4 18
18 10 25 4 6 10 6 17 11 40 27 21 29 40 41 36 26 15 13 4 24 3 4 6 7 41 3 18
19 2 10 16 40 20 16 4 18 37 30 30 20 18 21 22 29 16 15 17 24 42 16 4 5 42 2 20
20 5 22 34 29 11 12 67 31 33 30 31 18 78 30 42 35 30 30 6 34 6 10 12 8 78 5 27
21 22 22 11 7 7 7 9 15 22 26 17 17 17 16 15 23 16 16 9 12 14 16 14 27 27 7 16
22 37 27 15 12 9 10 15 25 23 63 45 51 54 11 14 35 27 14 28 37 21 47 18 9 63 9 27
23 5 7 24 13 12 39 9 56 16 19 20 20 52 25 19 15 10 21 16 37 11 13 38 5 56 5 21
24 5 31 16 6 15 9 11 21 51 27 24 25 37 19 21 59 9 9 11 6 9 19 29 18 59 5 20
25 22 27 21 46 20 5 7 16 23 28 36 24 22 21 20 37 34 23 13 12 9 13 6 5 46 5 20
26 7 10 11 18 53 9 9 47 22 45 10 12 12 27 21 11 8 9 9 6 6 9 15 39 53 6 16
27 24 9 16 34 20 22 7 27 23 24 23 34 38 37 40 30 17 9 53 5 14 3 22 23 53 3 23
28 7 3 17 38 34 54 33 49 60 23 32 27 23 18 17 14 11 16 19 10 7 13 12 4 60 3 23
29 18 7 8 5 5 13 51 25 41 34 19 24 23 30 23 19 10 57 6 3 4 7 3 9 57 3 19
30 10 6 19 16 10 22 19 15 55 27 26 29 23 25 23 17 11 35 52 57 36 35 9 71 71 6 27
31 39 4 7 50 17 4 46 39 59 24 43 27 37 54 43 19 16 54 9 5 7 7 4 4 59 4 26
Maximum hourty value =
Minimum hourly value =
Average hourly value =
78 degrees
2 degrees
20 degrees
r--~.
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
October 2008
Hourly Stability Class
DAY/HR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1 F F E D F F D D A A A A A B B B B D F F E D D E
2 E E E D D D D A A B A A B B B C A D F F D E E E
3 E E E E E D C A B B B B C B B B B D E F E D E D
4 D D E D D E c C B C C B B B C D C D D D D D D F
5 F E E F F F A A C C A B B C A D D F F F F D D D
6 E D D D D F C A C B A A A C C B C D E E D E D D
7 D D D D E D C A A B C B A A A A A E E F D D D E
6 E E E E E E A A A A A A A A A A C E F D E F E E
9 E E D D D E C A A C B C B C D D D D D E D D D D
10 D E E E D D D D D D D D D D D D D D D D D D D D
11 D D D D D D D D D D D D D D D D D D D D D D D D
12 D D D E F F D D A A A B B B B A A D F F E D D E
13 E D D D D D D A A B B A B B B C C D D E E E E D
14 E E E E E E D C C A C B B B A A C D E F F D D F
15 F D F F D E A B A B B A A B A A B D F E E E E E
16 E E E E D D A A A A B A A A B B C E F D E E E D
17 E D D F F E D A A A B A B B B C D E F E D E E D
18 D F E E D E C D A A B A A A A A C D E F E E E E
19 E D E F F E D B A A A B B B C A C D E F E D E E
20 E E F F D D A A B A A B A A A A A F E F E D D D
21 E F D E E E D C B A C C C C D D D D D D D D D D
22 F E D D D D D C C C D C C D D C C D F F D F D D
23 E E E D D E D A C B B B A B C C D D D E D D F E
24 E F E E E D D B A A A A A B B A D D D E D D F D
25 D E F F E E D C A A A A B B B A A F D D D D E E
26 E D D F F D D A B B D D D D D D D D D D D D D F
27 F D E F F F D A A B B A A A A A C D F E D E D E
28 E E D F F F A A A A A A A B C C D E F D E D D E
29 F E D E E E A A A A B A A A A B D F E E F E E D
30 D E F E D F B C A A A A A A A C D F E D F F D E
31 E E E F D E A A A A A A A A A B C F D E E E E E
r-~
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
November 2008
10-MeterLevel Hourly Wind Speed (m/s)
DAY/HR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Max Min Ave
1 3.3 3.7 2.2 1.5 1.4 1.9 2.4 1.9 1.9 1.2 3.0 3.0 2.3 1.9 2.1 2.2 1.6 0.9 2.9 3.2 3.7 3.8 3.5 3.2 3.8 0.9 2.4
2 2.6 2.7 3.6 2.5 2.0 2.0 1.8 1.7 2.7 3.5 5.4 4.5 4.8 5.0 5.2 5.7 52 4.9 3.6 3.1 2.8 4.7 3.8 3.1 5.7 1.7 3.6
3 2.3 2.3 3.7 3.2 2.9 2.4 1.8 2.0 1.4 2.5 3.3 3.5 4.6 4.4 3.9 3.1 4.2 2.6 2.5 1.6 1.5 2.0 2.6 3.6 4.8 1.4 2.8
4 3.9 3.8 3.8 2.7 2.2 3.4 6.4 7.5 8.6 8.8 8.2 7.6 7.7 7.1 5.9 5.0 5.1 5.8 7.0 6.1 7.3 3.9 5.0 5.1 8.8 2.2 5.7
5 3.0 3.3 2.5 2.7 3.3 5.3 4.8 3.9 3.4 7.2 9.0 9.0 8.3 7.8 9.1 8.2 6.1 5.0 3.6 4.0 4.1 4.8 5.2 4.1 9.1 2.5 5.3
6 3.0 3.8 2.1 1.8 2.6 3.9 3.9 2.8 1.7 3.8 4.5 2.7 4.9 4.3 3.9 4.6 4.8 2.4 2.5 2.8 3.0 3.3 3.0 2.8 4.9 1.7 3.3
7 2,5 2.9 2.1 2.4 2.2 1.9 3.0 1,4 1.4 2.0 2.7 1.9 2.1 3.2 2.3 2.0 3.0 3.3 2.7 3.3 2.8 32 3.4 4,3 4.3 1.4 2.6
8 3.7 4.0 4,1 4.2 4.0 4.5 2.7 2.5 2.3 3,1 2.4 3.3 3.8 4.0 3.9 3.4 3,3 2.5 2.3 3.7 3.0 3.4 3.6 3.4 4,5 2.3 3.4
9 3.2 3.2 3.0 3.0 2.9 2.4 2.5 1.5 2.1 1.6 3.2 3.3 3.0 3.7 3.0 2.2 3.5 2.9 3.0 4.0 3.3 3.3 3,0 1.4 4.0 1.4 2.8
10 2.0 4.0 3.8 3.3 2,6 2,5 2.3 1.6 1.4 1.5 2.8 3.8 4.6 5.0 5.0 4.7 4.4 2.9 2.1 3.4 3.0 2.7 2,7 1.9 5.0 1,4 3.1
11 3.0 2.2 2.2 1.9 1.9 1,7 1.6 1.2 1,6 0.9 1.4 2.3 2.9 3.0 3.0 2.7 2,8 2.7 3.3 2.6 1.7 3.2 2.2 0.7 3.3 0,7 2.2
12 1.3 2.5 4.0 3,6 1.6 1.3 1.5 2,3 3.4 2.9 2.9 2.3 6.7 8.7 6.9 4.7 3.5 2,5 3.3 4.0 2.5 1.0 1.8 2.5 8.7 1,0 3.2
13 3.2 2.7 2.1 2.7 2.4 3,6 2.9 2,2 1.6 2.0 1.6 3.3 3.1 2.7 2.3 2,6 1.9 4.3 4.5 4.7 3.7 2.5 4.3 4.6 4.7 1.6 3.0
14 2.5 4.2 4.7 3.6 5.5 6.8 6.5 6.7 9.1 8.1 9,9 10.6 9.0 7.1 7.0 7.2 6.3 5.7 4.7 2.1 3.2 4.0 4.0 4.4 10,6 2.1 6.0
15 4.1 3.6 1.6 1.5 1.4 2.1 2.4 1.5 1.5 1.5 1.2 1.5 1.7 1.6 1.7 2.8 2.9 2.6 1.9 2.6 2.0 1.4 1.4 1.6 4.1 1.2 2.0
16 1.9 1.3 1.4 2.3 1.6 1,6 1.9 1.6 1.1 1.4 2,2 2,8 2.9 2.3 2.7 2.8 1,8 1,0 1.9 1.8 1.7 1.3 1.4 1.8 2.9 1.0 1.9
17 1.8 2.5 2.9 2.5 2.3 2.4 1.8 1.3 1.1 1.9 1,7 2,4 2.9 2.8 2.1 1,8 1,6 1,8 2.8 0.9 0.9 1.3 2.3 1,1 2.9 0.9 2.0
18 1.1 2.9 3.3 4.1 3.1 2.9 2.2 1.6 1.0 1.8 1,6 2.0 2.3 2.8 1.8 1.6 1.4 0.9 2.7 3.1 3.5 3.5 3.7 2,7 4.1 0.9 2.4
19 12 1.2 1.1 0.8 1.2 2.4 2.5 3.4 2.0 1.5 2.1 2.2 2.4 2.1 2.0 1.5 1.3 1.6 3.0 2,8 3.6 3.4 2.9 2,9 3.6 0.8 2.1
20 3.1 3.0 1.9 1.1 1.1 1.1 1.4 2.3 1.6 1.7 2.5 2,5 1.9 1.5 1.1 0,9 1.4 0.8 2.1 2.9 3.5 4.0 2.6 1,9 4.0 0.8 2.0
21 1.3 1.3 1.1 1.2 1.1 0.7 1.5 1.3 1.7 1.9 2.6 2,7 2.3 1.9 2.2 1,5 0.9 0.5 1.4 3.4 3.2 3.2 3.2 3,6 3,6 0.5 1.9
22 3.0 3.1 2.9 1.9 1.1 1,4 2.1 2.0 1.4 1.8 1.7 2,1 2.0 2.0 1.5 1.5 1.4 1.0 2.7 4.0 3.1 2.8 2.3 2,0 4.0 1,0 2.1
23 1.8 2.2 2.1 3.0 3.7 3.9 2.5 3.1 1.8 1.7 2.1 2.0 2.2 2.7 3.1 2,4 1.9 3.6 4.2 3.6 2.7 3.7 4.4 5.1 5,1 1.7 2.9
24 4.9 5.1 3.2 3.8 4.5 4.3 2.5 3.2 2.0 3.1 3.4 1.8 1.5 1.6 1.5 1.6 1.6 2.0 1.9 2.7 4,2 3.6 3.3 2.1 5.1 1.5 2.9
25 2.9 2.8 1.6 1.0 1.8 2.6 2.6 2.3 1.0 AUD CAL 2.3 2.6 2.1 1.3 1.3 1.6 2.6 2.0 2,7 2.0 2.9 1.8 1.7 2.9 1.0 2.1
26 2.2 2.1 1.1 1.0 1.5 2.0 2.8 3.4 2.1 1.4 1.5 2.0 2,5 2.4 1.1 1.6 1.5 1.2 2.7 3.2 2.1 1.6 2.3 2.8 3.4 1.0 2,0
27 3.2 2.6 2.3 1.9 3.1 3.5 3,4 1.6 3.7 4.5 3.8 2,8 2,4 3,8 3.1 3.4 3.0 2.6 1.5 0.8 0.8 1.5 2.4 2.3 4.5 0.8 2.7
28 2.3 2.0 1.5 1.5 1,5 0.7 0.6 0.8 0,8 2.1 1.2 1.7 6,2 8.6 8.5 8.9 7.0 5.8 6.4 6.8 62 5.5 6.3 7.4 8.9 0.6 4.2
29 7.0 5.6 3,7 2.4 4.0 1.8 1.7 1.3 1.4 2.2 3.3 2.8 9,8 9.6 9.0 9.1 6.5 4.6 5,4 5.2 2.6 5.1 6.1 6.9 9.8 1.3 5.0
30 5.1 6.2 7.3 5.6 4.6 4.8 4.1 3.0 4,3 5.1 7.8 6.6 6,7 5.8 5.3 5.5 4.8 2.3 4.4 5.9 5.5 6.5 7.4 3.0 7.8 2.3 5.3
Maximum hourly value =
Minimum hourty value =
Average hOUrly value =
10,6 m/s
0.5 mfs
3.1 mi.
AUD=Audit
CAL =Calibration
~
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorologicai Site
November2008
lQ..Meter Hourly Wind Direction (degrees)
DAY/HR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1 32 30 34 27 35 77 51 28 318 251 191 202 184 199 203 212 211 81 43 37 31 30 31 38
2 54 64 46 64 77 59 65 93 95 141 163 171 186 198 205 229 207 193 185 199 217 249 264 283
3 283 39 27 32 25 9 358 18 114 174 186 188 206 198 196 196 134 117 127 137 66 84 145 159
4 161 162 161 151 164 175 184 183 188 186 194 200 218 232 234 237 269 287 276 287 302 339 355 311
5 309 289 303 167 327 327 334 304 305 301 303 304 316 320 312 320 317 319 336 327 329 318 321 327
6 4 332 53 204 2 15 9 8 61 315 333 40 285 285 305 308 311 309 306 293 352 57 339 349
7 25 4 57 7 137 354 13 1 183 223 240 235 236 237 14 47 238 239 349 346 2 358 4 342
8 324 335 336 328 333 341 358 358 170 165 182 196 209 209 216 218 214 227 356 11 27 32 23 19
9 20 23 25 22 22 12 11 13 214 137 122 124 142 158 167 61 92 62 37 17 15 22 26 65
10 141 197 194 183 177 169 166 184 215 217 210 193 163 140 167 144 114 81 35 15 12 11 20 32
11 25 33 26 31 28 38 54 62 113 38 178 137 174 197 213 200 169 229 332 343 348 319 358 73
12 35 333 330 331 301 6 340 40 240 283 66 96 309 320 316 360 154 217 343 1 24 290 313 10
13 14 33 41 36 34 15 10 25 101 61 64 217 169 179 180 176 208 327 343 330 353 344 324 316
14 319 343 346 334 346 322 314 325 300 317 320 331 333 331 326 323 333 338 4 195 325 5 26 22
15 22 16 313 14 341 5 44 16 224 229 17 289 295 291 116 211 232 253 51 351 345 347 6 60
16 49 48 355 9 28 46 42 46 112 182 193 198 201 208 231 227 237 258 17 6 306 219 53 32
17 8 14 13 359 335 349 4 5 189 189 215 245 240 227 234 201 217 93 13 301 346 335 324 319
18 26 18 27 18 2 318 326 6 62 166 224 193 179 186 172 212 215 241 359 10 1 6 13 12
19 4 349 56 138 54 27 26 47 76 221 229 210 241 224 224 234 240 276 5 44 53 61 65 55
20 46 47 34 332 28 32 85 74 104 164 204 185 150 191 166 191 171 106 38 46 44 46 76 125
21 134 239 175 60 38 322 196 174 186 175 197 176 195 212 221 235 227 164 39 41 36 35 36 42
22 42 47 55 59 39 33 19 12 358 275 270 196 214 224 201 152 197 262 26 25 36 33 47 57
23 65 64 60 53 50 48 62 49 79 160 161 191 211 211 200 227 256 310 356 14 35 16 354 356
24 11 25 27 29 26 14 81 39 122 165 171 220 223 273 106 154 224 268 337 339 23 28 33 28
25 29 31 54 11 353 329 332 281 231 AUD CAL 244 236 238 296 57 177 239 332 356 356 4 5 23
26 26 10 309 68 115 16 1 346 327 329 80 105 139 179 145 114 129 237 23 6 333 23 15 26
27 28 26 299 31 54 3 9 47 67 151 114 112 97 24 1 13 13 10'358 260 227 173 188 199
28 211 212 212 191 218 176 159 144 60 70 84 245 325 330 326 330 334 309 301 319 327 332 328 328
29 320 321 332 248 275 25 118 143 115 65 130 190 309 327 327 325 326 324 324 330 316 325 332 327
30 341 321 335 342 329 339 338 349 340 335 337 338 338 330 318 311 310 307 310 321 344 341 322 24
AUo=Audit
CAL=Cafibration
~"~-.
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
November2008
Hourly Sigma Theta (degrees)
DAY/HR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 18 17 18 19 20 21 22 23 24 Max Min Ave
1 4 3 12 9 10 16 14 16 11 44 21 20 29 36 33 17 30 37 9 5 3 4 4 6 44 3 16
2 8 8 7 13 16 11 21 29 39 14 15 20 16 15 11 10 30 20 17 17 20 19 16 18 39 7 17
3 46 18 6 9 10 22 20 11 49 20 23 19 24 22 24 30 18 10 10 20 22 22 17 9 49 6 20
4 9 7 6 9 9 9 8 8 7 9 12 11 15 16 12 14 15 8 21 15 15 19 10 26 26 7 12
5 16 10 20 24 48 15 15 17 16 10 11 14 14 14 16 14 11 11 10 6 7 8 7 13 48 6 15
6 27 18 74 17 48 5 6 10 24 46 37 64 21 25 35 19 10 15 34 67 51 17 22 19 74 5 30
7 26 12 46 12 60 32 8 27 62 22 23 42 52 28 47 42 24 6 47 15 12 7 6 11 62 6 28
8 14 16 19 13 9 9 14 17 32 15 22 16 17 15 19 16 12 24 30 6 5 5 6 3 32 3 15
9 6 4 5 5 11 10 7 27 22 34 30 18 32 18 24 16 15 20 11 8 11 7 9 21 34 4 15
10 31 10 10 11 10 11 14 16 24 25 19 17 17 21 17 15 28 21 20 7 7 7 10 12 31 7 16
11 9 13 8 8 10 7 17 34 14 74 46 36 31 32 26 23 13 9 28 14 48 26 54 43 74 7 26
12 12 20 12 29 45 54 67 35 16 51 28 50 22 13 12 57 17 53 26 7 26 48 49 12 67 7 32
13 13 21 17 12 21 9 6 11 44 28 66 23 26 21 27 20 30 15 5 6 19 16 23 4 66 4 20
14 8 4 9 17 9 7 6 21 9 9 12 9 11 14 13 10 8 8 22 71 22 27 11 8 71 4 14
15 7 11 49 41 50 31 33 41 29 46 72 56 40 57 61 67 11 11 37 33 32 54 59 66 72 7 42
16 38 64 34 18 18 13 13 14 58 27 22 18 20 16 20 16 17 49 15 22 40 60 24 14 84 13 27
17 20 6 6 11 17 13 23 33 52 18 28 22 32 18 15 20 11 73 64 42 58 36 27 27 73 6 28
18 48 6 5 5 8 13 26 12 47 17 39 31 30 15 36 35 18 32 14 4 5 19 5 5 46 4 20
19 11 24 56 41 35 3 5 16 25 28 20 26 22 28 22 24 15 14 17 18 9 9 5 5 56 3 20
20 5 5 36 25 15 24 30 12 39 27 19 21 31 47 35 43 10 67 5 28 49 39 31 31 67 5 28
21 40 56 42 40 51 68 38 28 33 36 29 32 28 41 27 46 22 40 12 4 3 4 5 3 68 3 30
22 3 4 6 16 25 6 6 9 51 23 31 36 30 31 35 22 17 40 6 3 8 9 13 19 51 3 19
23 22 23 16 11 5 8 9 8 37 25 28 32 32 17 14 17 18 19 29 20 14 19 10 10 37 5 18
24 4 12 15 13 13 9 37 10 35 16 15 38 49 69 61 32 15 13 23 22 5 3 5 14 89 3 22
25 4 5 15 27 9 14 12 45 23 AUD CAL 20 23 21 75 47 32 23 17 7 8 9 11 24 75 4 21
26 5 10 29 50 39 10 5 10 30 38 48 32 34 33 80 31 41 55 11 9 30 83 12 8 63 5 29
27 10 35 17 30 17 7 7 20 11 28 17 16 18 37 16 7 6 7 7 41 33 12 7 12 41 6 17
28 9 10 8 10 12 41 35 18 40 18 46 29 15 9 9 9 8 8 8 10 12 10 8 8 46 8 16
29 8 7 37 47 21 16 51 59 48 24 17 36 12 17 10 9 9 10 8 8 8 7 7 6 59 6 20
30 11 7 11 18 11 9 12 14 12 16 14 18 18 17 18 13 15 38 13 16 9 10 8 58 56 7 16
Maximum hourly value =
Minimum hourly value =
Average hOUrly value=
75 degrees
3 degrees
22 degrees
AUD=Audit
CAL=Calibration
(~
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Stte
November 2008
Hourly Stability Class
DAYIHR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 18 17 18 19 20 21 22 23 24 I
1 E E D D D E C C D A B B A A A C A F D E E E E
E I
2 D D E D E D B A A C C C C C D D C D D D E D D D
3 F F E D D E B D A B B B C C B B C D D F F F D D
4 D E D D D D D D D D D D D D D C C D D D D D D D
5 D D E F E D C C C D D D D D D D D D D E E D D D
6 E D F E F E D D A B C A C C B C D D F F E D D E
7 F D F D F F D A A 8 A A A 8 A A B E F D D E E D
8 D D D D D D C C A C 8 C C C 8 C D F F E E E E E
9 E E E E D D D A B A B 8 8 8 8 C C E D D D E D F
10 F D D D D D C C A A 8 C C C C C C E F E E E D D
11 D E D D D E C A C A A A A 8 B A C D E D F E F F
12 D E D D F F A A C A A A D D D C C F E E F F F D
13 D E E D E D D D A A A B B B A B A D E E D D D E
14 D E D D D D D D D D D D D D D D D D D F D D D D
15 E D F F F F F A A A A A A A A A D D F F F F F F
16 F F F F F E E C A A B B B B 8 C C F E F F F F E
17 F E E D E D F A A B A B A B C B D F F F F F F F
18 F E E E D D F D A C A A A C A A B F D E E D E E
19 D F F F F F E C A A B A B A 8 A C E D E D D E E
20 E E F F E F F D A A B B A A A A D F E E E D F F
21 F F F F F F F A A A A A A A A A F F D E E E E E
22 E E E E F E E D A A A A A A A B E F E E D D E F
23 F F E D E D D D A A A A A C C C F D D D D D D D
24 E D D D D D F D A C C A A A A A E E F E E E E E
25 E E E F D D D A A AUD CAL B A B A A F F E E D D D F
26 E D F F F D E D A A A A A A A A F F D D F F D D
27 D F E F D E E B D C C C B B C D E E E F F D E D
28 D D D D D F F B A B A A D D D D D D D D D D D D
29 D D D F D E F A A A C A D D D D D D D D D D D D
30 D D D D D D D C D C D D D C C C D F D D D D D E
31 D E E F F D 8 A A A A B C C C C C C 8 D E D E D
AUD=Audit
CAL=Calibration
("~
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,Un Meteorological Site
December 2008
1Q-Meter Level Hourly Wind Speed (mls)
DAY/HR 1 2 3 4 5 6 7 6 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Max Min Ave
1 2.8 6.6 3.6 3.3 3.3 2.4 2.7 2.9 1.3 1.2 1.9 2.0 2.9 3.0 2.2 1.9 0.9 0.8 1.9 3.5 3.8 1.9 1.0 1.7 6.6 0.8 2.5
2 2.0 1.9 1.9 12 1.8 1.4 1.3 1.6 1.9 2.0 1.9 2.4 1.8 2.0 1.6 1.8 1.7 1.3 1.8 3.6 10.4 8.6 4.3 4.0 10.4 1.2 2.7
3 4.5 4.0 4.2 5.8 6.3 5.5 4.7 2.7 1.7 2.9 1.9 1.4 1.8 3.5 3.5 3.1 1.6 3.1 3.0 3.9 3.8 3.1 3.2 3.7 6.3 1.4 3.5
4 3.7 2.2 3.0 2.4 3.0 3.0 2.7 2.2 2.1 1.2 0.8 1.2 1.5 1.6 2.4 1.6 1.1 2.5 3.7 3.7 2.7 2.7 2.7 4.2 4.2 0.6 2.4
5 4.6 2.8 1.8 2.6 3.3 2.6 2.0 2.4 1.6 1.2 2.0 2.0 2.1 2.4 1.9 2.0 1.7 1.2 1.3 2.6 3.5 2.9 2.6 3.0 4.6 1.2 2.3
6 2.7 2.9 2.0 1.6 1.4 22 2.1 2.2 1.4 1.1 1.7 2.4 2.4 3.0 2.4 1.8 1.6 0.9 1.3 3.8 2.8 1.0 3.3 3.1 3.8 0.9 2.1
7 2.3 2.8 2.9 2.6 2.1 2.7 2.5 1.3 1.3 1.4 1.9 1.7 2.0 2.9 3.1 1.7 1.7 1.5 1.9 2.1 1.7 1.6 0.8 1.5 3.1 0.8 2.0
8 1.1 2.4 2.0 1.6 1.8 1.5 1.1 1.0 1.0 1.2 2.1 2.5 4.8 5.5 5.3 5.7 4.1 4.8 3.4 2.7 1.3 4.2 8.2 7.1 8.2 1.0 3.2
9 7.6 8.9 8.5 10.0 10.2 9.1 8.1 8.6 7.0 6.5 4.9 6.9 7.3 7.5 6.5 6.2 6.0 5.1 4.1 2.0 1.7 2.4 2.6 2.2 10.2 1.7 6.2
10 2.2 1.3 1.6 2.2 2.1 1.5 2.8 2.3 1.6 2.5 3.8 4.1 3.6 3.2 2.4 2.4 2.2 1.7 2.7 1.9 1.8 2.9 1.5 1.3 4.1 1.3 2.3
11 1.6 1.9 2.6 1.7 1.8 2.5 2.3 1.3 1.4 1.1 1.8 2.4 2.7 2.3 3.2 3.0 1.6 1.6 2.1 3.6 3.8 3.6 2.6 2.3 3.8 1.1 2.3
12 2.6 1.6 2.0 2.5 3.4 3.5 3.1 2.4 3.3 1.9 2.2 1.8 2.2 2.2 1.4 1.2 1.3 1.6 1.8 1.7 1.9 2.4 1.9 3.0 3.5 1.2 2.2
13 2.5 2.8 2.8 2.7 2.7 2.7 2.2 1.7 1.8 3.5 7.1 9.1 6.4 7.7 7.6 7.8 8.1 6.4 9.6 11.5 11.8 11.2 9.8 6.1 11.8 1.7 6.2
14 3.7 2.3 1.5 1.6 1.9 2.4 3.3 3.8 3.5 2.9 2.9 4.3 5.7 5.7 5.3 4.1 4.5 3.1 2.6 1.6 2.6 3.2 2.1 3.0 5.7 1.5 3.2
15 2.1 2.5 2.6 3.1 3.1 2.6 2.2 1.3 0.9 2.7 4.4 4.7 5.4 4.4 2.9 2.5 1.9 2.4 2.6 1.9 2.0 1.7 2.6 1.5 5.4 0.9 2.7
16 2.7 2.1 2.9 1.6 1.0 0.9 1.4 1.2 1.5 1.5 2.0 2.9 2.0 3.2 3.3 3.4 2.9 2.3 2.0 2.0 2.6 1.5 1.2 1.9 3.4 0.9 2.1
17 2.2 2.3 2.0 1.9 1.9 1.5 2.1 1.1 2.2 1.4 1.3 0.9 12 2.1 2.5 2.2 1.9 2.5 2.4 3.2 2.3 2.0 1.8 1.6 3.2 0.9 1.9
16 1.2 2.3 2.4 2.0 1.7 3.1 4.5 3.7 5.3 3.8 4.4 4.8 5.1 4.3 5.9 4.0 3.5 4.3 2.6 1.8 2.7 2.1 1.5 1.5 5.9 1.2 3.3
19 2.0 2.0 2.6 2.2 1.8 0.7 0.9 2.3 2.2 1.1 1.7 1.4 2.3 3.0 3.6 2.0 1.3 1.3 1.1 1.1 1.8 2.2 3.3 2.1 3.6 0.7 1.9
20 1.4 1.5 2.8 2.3 1.7 2.1 3.4 3.2 2.5 2.1 1.9 1.2 1.5 1.7 1.9 1.2 1.8 3.0 4.9 4.4 4.4 4.2 4.6 3.9 4.9 1.2 2.7
21 4.3 3.6 3.2 1.9 1.0 1.6 1.5 2.0 2.2 1.2 1.2 0.7 0.7 1.6 2.4 1.7 1.4 1.3 2.5 2.9 3.6 3.8 2.5 1.7 4.3 0.7 2.1
22 1.1 1.8 1.8 2.0 2.8 1.7 2.6 3.1 4.5 3.2 1.3 1.0 1.3 1.9 1.3 1.1 1.3 1.2 0.8 2.5 0.5 2.9 2.6 2.2 4.5 0.5 1.9
23 3.4 2.8 1.0 1.4 3.6 2.3 3.2 3.5 2.5 2.9 2.8 2.5 2.5 1.1 4.3 4.8 3.4 2.7 3.5 4.2 4.2 4.6 4.5 4.2 4.8 1.0 3.2
24 2.7 3.1 3.2 4.2 4.5 3.8 2.6 3.4 2.4 2.6 1.6 1.4 2.7 2.1 2.6 3.3 2.7 2.1 2.1 1.8 1.1 2.4 2.5 2.0 4.5 1.1 2.6
25 3.0 1.8 1.5 1.2 0.8 1.2 1.7 1.3 0.8 0.8 2.6 2.4 2.6 2.7 1.3 1.9 2.2 3.1 4.3 6.1 8.5 7.9 8.3 8.2 8.5 0.8 3.2
26 10.0 7.5 5.1 6.2 7.8 6.1 4.3 6.0 3.9 5.4 4.5 4.8 8.0 6.7 6.5 4.8 5.0 2.9 3.5 4.2 4.4 4.4 5.6 5.3 10.0 2.9 5.5
27 6.4 6.1 5.8 1.7 2.8 4.4 4.9 2.9 2.3 1.9 1.5 1.4 1.2 1.4 2.1 1.4 1.2 1.5 2.1 3.6 4.1 3.8 3.5 3.5 6.4 1.2 3.0
26 3.8 3.0 2.9 2.6 2.2 1.3 1.3 1.7 0.6 0.7 1.2 2.0 1.8 2.5 2.2 1.8 1.6 1.0 2.3 3.7 3.6 3.0 2.1 2.2 3.8 0.6 2.1
29 1.2 1.5 1.6 2.4 3.3 2.9 2.7 2.7 2.3 1.8 0.7 1.0 0.8 1.1 1.1 1.7 1.3 1.1 1.2 2.3 1.2 1.0 1.8 1.7 3.3 0.7 1.7
30 1.7 1.2 0.9 0.9 1.3 2.1 2.0 3.9 3.0 1.8 0.8 0.5 1.4 1.4 2.1 2.0 1.0 1.4 1.2 2.0 1.8 2.3 2.0 1.7 3.9 0.5 1.7
31 1.5 2.5 4.2 4.1 3.9 2.8 3.2 3.3 2.0 1.4 2.9 4.0 2.6 2.5 2.2 1.7 1.4 1.1 2.9 3.7 2.7 2.6 2.4 2.3 4.2 1.1 2.7
Maximum hourly value =
Minimum hourly value =
Average hout1y value =
11.8 mls
0.5 mls
2.8 mls
~.-,
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
December 2008
10-Meter Hourly Wind Direction (degrees)
DAYIHR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1 25 307 305 343 10 12 9 1 91 231 178 175 193 189 186 192 193 26 12 7 3 7 6 4
2 350 2 4 358 25 43 54 22 64 92 104 142 155 151 126 162 158 343 341 334 333 329 314 321
3 350 341 357 333 318 294 279 272 239 300 355 54 286 196 197 189 220 15 9 355 359 9 7 9
4 10 25 15 25 24 22 15 16 15 8 33 134 168 179 185 214 273 322 319 354 342 10 324 323
5 327 322 55 16 5 23 21 22 43 94 179 193 201 193 193 210 192 137 25 9 7 7 3 355
8 290 345 6 14 11 330 8 7 17 197 175 176 201 220 200 187 177 118 196 12 17 325 13 6
7 303 18 22 23 28 21 19 8 19 138 176 184 176 173 206 180 157 86 21 10 21 5 338 174
8 153 171 164 50 24 37 64 98 196 211 209 203 218 226 229 245 290 263 253 336 145 318 332 339
9 327 325 319 344 347 339 332 332 332 340 313 303 311 313 326 322 317 317 311 338 1 19 327 331
10 43 248 33 27 300 270 338 353 20 280 270 236 200 186 195 194 196 210 334 17 24 19 17 309
11 336 321 333 16 15 2 5 52 100 62 175 201 215 207 207 215 219 212 20 15 5 6 6 294
12 334 320 41 34 18 13 3 355 337 348 177 248 138 159 195 162 71 2 10 21 31 16 30 25
13 31 26 31 26 35 30 44 41 82 173 185 187 195 215 228 234 230 254 210 214 216 213 215 251
14 293 313 5 310 344 294 291 301 284 274 276 281 236 217 226 228 217 216 204 199 19 15 26 15
15 24 39 40 19 18 23 20 48 153 124 139 150 137 136 127 92 72 31 24 111 107 127 189 229
16 210 258 309 323 53 112 242 216 160 62 147 173 184 179 195 179 174 148 147 137 139 145 105 25
17 32 39 358 344 356 29 53 40 14 35 4 2 67 95 118 120 82 11 7 16 22 15 5 51
18 77 101 121 124 132 117 130 264 220 183 188 212 192 226 240 240 219 227 219 253 245 185 296 20
19 29 28 35 31 39 354 320 289 307 319 13 337 193 183 188 182 148 91 6 355 342 344 210 239
20 203 92 337 19 346 19 18 21 23 26 26 22 194 176 194 184 32 25 14 6 3 7 3 4
21 2 359 6 24 114 15 348 324 17 36 24 2 260 207 =195 73 80 15 16 7 353 355 7
22 13 334 202 335 10 78 111 109 124 150 193 132 61 3 6 17 67 44 344 172 303 207 152 151
23 178 191 110 125 240 307 333 344 345 319 260 290 296 345 259 269 277 293 324 358 333 328 335 346
24 360 10 21 15 13 18 20 16 33 51 15 141 134 117 141 145 149 136 131 134 142 47 40 67
25 360 2 89 150 256 350 50 141 355 285 155 136 181 178 163 142 163 154 159 171 184 175 188 186
26 202 266 253 252 235 221 207 239 228 228 237 246 242 248 247 257 302 262 313 316 360 331 322 329
27 307 314 349 346 313 7 15 359 349 23 57 29 224 191 194 161 43 23 12 11 6 3 5 10
28 6 3 9 10 3 334 320 348 32 34 213 196 193 195 204 196 196 111 26 12 7 6 17 15
29 355 353 12 24 25 17 16 5 356 1 343 306 265 212 241 205 219 213 358 357 17 31 34 29
30 17 12 6 326 18 26 17 16 16 26 352 317 248 204 208 210 198 218 343 6 23 32 46 23
31 360 15 9 8 15 7 335 350 171 253 283 269 235 190 141 166 218 81 10 17 18 17 12 360
,---'
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
December2008
Hourty Sigma Theta (degrees)
DAY/HR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Max Min Ave
1 71 17 24 26 8 6 9 7 50 33 25 21 17 16 22 17 15 27 6 3 4 7 23 9 71 3 19
2 9 4 6 7 12 20 40 19 20 20 20 15 20 22 31 21 16 51 16 12 10 10 19 19 51 4 18
3 16 18 10 15 9 12 20 19 39 19 28 45 72 21 17 15 65 18 14 10 12 7 4 3 72 3 21
4 3 10 5 9 4 5 6 4 7 10 26 56 35 24 12 24 30 16 9 13 29 16 21 10 56 3 16
5 6 43 32 13 7 10 12 12 21 39 27 24 29 24 23 22 20 37 20 5 4 13 12 16 43 4 20
6 10 14 9 10 20 20 31 9 15 60 24 22 22 16 20 19 21 40 74 5 7 36 8 26 74 5 22
7 31 6 6 13 7 6 6 6 21 34 23 29 34 19 14 19 19 37 23 9 15 13 67 26 67 6 20
8 14 11 23 20 11 20 32 39 35 33 16 13 6 6 10 10 38 25 9 71 45 21 8 15 71 6 22
9 9 8 12 9 9 12 13 13 10 15 28 9 10 11 10 9 8 7 7 34 16 11 44 40 44 7 15
10 44 53 43 17 51 58 27 16 20 13 13 18 16 13 18 13 11 19 20 29 39 6 12 28 56 6 25
11 34 22 13 33 14 8 6 33 23 46 29 19 19 16 16 10 16 14 60 8 3 4 14 19 60 3 20
12 14 39 10 6 6 5 4 8 9 32 34 41 60 28 38 28 24 10 8 16 13 9 9 7 50 4 19
13 9 8 9 12 12 10 12 17 19 25 9 9 9 10 10 10 14 16 9 8 9 8 7 15 25 7 12
14 23 17 56 44 17 18 15 10 14 9 17 29 17 14 14 19 10 8 9 36 7 15 11 8 56 7 18
15 10 9 6 9 6 7 8 33 66 22 14 15 13 12 15 12 21 8 12 46 20 36 20 29 66 6 19
16 31 21 16 14 54 62 29 69 19 37 17 11 12 14 15 12 9 9 9 12 11 15 24 36 69 9 23
17 16 33 37 27 21 19 16 24 29 23 13 44 46 13 11 16 15 14 13 8 9 18 23 53 53 8 23
18 56 15 25 27 27 13 13 30 12 12 7 7 7 22 15 11 14 25 32 13 25 14 59 31 59 7 21
19 13 12 6 10 15 53 18 27 25 40 11 39 22 10 6 13 23 37 64 64 38 73 17 67 73 6 29
20 66 65 74 17 33 18 7 4 5 10 6 17 19 19 10 20 16 6 4 4 4 5 4 4 74 4 18
21 5 3 14 17 66 15 35 35 13 21 9 42 69 18 13 15 42 55 5 6 7 6 10 10 69 3 22
22 26 9 56 26 8 22 15 12 11 12 32 57 69 13 30 55 40 23 75 11 78 16 21 29 76 8 31
23 6 17 43 71 28 50 40 21 26 15 22 10 33 31 32 6 8 7 26 5 10 16 8 20 71 5 23
24 12 7 6 4 5 5 6 4 13 7 16 66 23 26 16 12 12 12 13 19 48 15 16 14 66 4 16
25 16 37 32 33 37 20 40 37 76 53 12 16 15 11 30 24 9 8 10 12 8 7 11 7 78 7 23
26 17 10 14 12 16 9 16 11 26 8 10 9 8 10 9 44 22 12 24 22 17 20 12 9 44 8 15
27 7 16 15 37 39 15 10 44 23 21 13 40 39 20 7 69 27 12 6 4 4 4 4 4 69 4 20
28 4 6 3 5 6 23 19 7 45 46 18 9 12 13 11 14 9 45 9 4 4 5 6 6 48 3 14
29 26 19 8 4 4 3 6 6 4 3 22 13 44 36 41 8 10 19 22 9 19 16 16 13 44 3 16
30 14 16 22 26 29 12 13 6 10 12 49 44 31 11 6 5 10 9 49 7 7 5 15 15 49 5 18
31 32 5 4 5 4 12 9 5 55 53 17 7 14 10 27 36 22 55 10 8 12 9 10 4 55 4 18
Maximum hourlyvalue =
Minimum hOUrly value =
Average hourly value=
78 degrees
3 degrees
20 degrees
r--
DENISON MINES (USA)CORPORATION
White Mesa Mill (Blanding,UT)Meteorological Site
December 2008
Hourly Stability Class
DAYIHR 1 2 3 4 5 6 7 6 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1 F D D E D E D D A A A B C C B C E F E E E E F D
2 D E E E D F F B B B B C B B A B E F E D D D D D
3 D D D D D D D B A B A A A B C C F D D D D E E E
4 E D E D E E E D D D A A A A D A F D D D F E E D
5 E F F D E D D D B A A A A A A B F F F E E D D D
6 D D D D F F F D C A A B B C B B F F F E E F D E
7 F E D D E E D D B A A A A B C B F F F D E E F F
8 E D F F D F F A A A C C D D D D D D D F F D D D
9 D D D D D D D D D D C D D D D D D D E F E D F F
10 F F F E F F F B B C C C C C B C D F E F F E D F
11 F F D F E D E A A A A B B C C D E E F D E E D F
12 D F D D E E E D D A A A A A A A F D D E E D D E
13 D D D D D D D C B B D D D D D D D D D D D D D D
14 D E F F E E D D C D C C C C C C D D D F E D D D
15 D D E D E E D A A B C C C D C D F D D F F F E F
16 F F D E F F F A B A C D D C C D D D D D D E F F
17 F F F F F F E A A A C A A C D C E D D D D F F F
16 F E F F F D D B D D D D D C C D D D F E F E F F
19 E D E D E F F A A A D A B D D C F F F F F F D F
20 F F F E F F E D D D D C B B D B F E E E E E E E
21 E E D E F E F A C B D A A B C C F F E E E E D D
22 F D F F D F D D D D A A A C A A F F F D F D E F
23 E D F F D F E B A C B D A A C D D E E E D D D D
24 D E E E E E E D C D B A A A C D D D E F F D D E
25 D F F F F F F A A A D C C D A A D D 0 D 0 D D D
28 0 D D D D D 0 D B D D D D 0 D C C D E 0 D D D D
27 0 D D F F D 0 A A B C A A B D A A D E E E E E E
28 E E F E D F F 0 A A B 0 D C D C D F D E E E D E
29 F F 0 E E F E D D 0 B C A A A D D F F D F E E E
30 E E F F F D E D D 0 A A A 0 0 D D D F E E E E E
31 F E E E E 0 0 D A A C D C 0 A A B F D D D D D E
(
AppendixC
Joint Frequency Distribution
of Wind Speed by Wind Direction
by Hour ofthe Day
July -December 2008
10 METER WIND DATA ANALYSIS
FROM 7/1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
HOUR OF THE DAY 00-04
+----------WIND SPEED CLASSES (M/S)----------+
AVERAGE
0.0-1.8-3.3-5.4 8.4 >WIND
DIR 1.8 3.3 5.4 8.4 11.0 11.0 TOTAL SPEED
-------------------------------------------------------------------------
N .0041 .0156 .0125 .0011 .0000 .0000 0.033 3.1
NNE .0059 .0265 .0100 .0005 .0000 .0000 0.043 2.8
NE .0050 .0118 .0018 .0002 .0000 .0000 0.019 2.4
ENE .0029 .0059 .0014 .0000 .0000 .0000 0.010 2.3
E .0018 .0018 .0002 .0000 .0000 .0000 0.004 2.2
ESE .0005 .0018 .0020 .0000 .0000 .0000 0.004 3.1
SE .0014 .0020 .0007 .0011 .0000 .0000 0.005 3.2
SSE .0005 .0018 .0007 .0002 .0000 .0000 0.003 2.7
(S .0005 .0014 .0023 .0009 .0000 .0000 0.005 4.2
SSW .0009 .0018 .0011 .0002 .0002 .0000 0.004 3.5
SW .0000 .0007 .0000 .0000 .0000 .0000 0.001 2.7
WSW .0007 .0005 .0002 .0002 .0000 .0000 0.002 2.9
W .0002 .0011 .0000 .0002 .0000 .0000 0.002 3.0
WNW .0002 .0023 .0011 .0000 .0000 .0000 0.004 2.8
NW .0025 .0041 .0016 .0016 .0005 .0000 0.010 3.3
NNvl .0014 .0063 .0084 .0018 .0002 .0000 0.018 3.7
-------------------------------------------------------------------------
TOT:0.028 0.085 0.044 0.008 0.001 0.000 0.167
***** *****AVG:1.4 2.6 4.0 6.2 9.4 0.0 3.0
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE =>736
OUT OF 4414 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS =>2
10 METER WIND DATA ANALYSIS
FROM 7/1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
HOUR OF THE DAY 04-08
+----------WIND SPEED CLASSES (M/S)----------+
AVERAGE
0.0-1.8-3.3-5.4 8.4 >WIND
DIR 1.8 3.3 5.4 8.4 11.0 11.0 TOTAL SPEED
-------------------------------------------------------------------------
N .0082 .0177 .0043 .0002 .0000 .0000 0.030 2.5
NNE .0086 .0263 .0061 .0000 .0000 .0000 0.041 2.5
NE .0093 .0104 .0007 .0000 .0000 .0000 0.020 2.0
ENE .0052 .0039 .0000 .0000 .0000 .0000 0.009 1.9
E .0023 .0016 .0000 .0000 .0000 .0000 0.004 1.8
ESE .0023 .0018 .0005 .0000 .0000 .0000 0.005 2.1
SE .0018 .0025 .0005 .0002 .0000 .0000 0.005 2.5
(SSE .0023 .0020 .0011 .0002 .0000 .0000 0.006 2.5
S .0025 .0016 .0007 .0020 .0005 .0000 0.007 3.7
SSW .0014 .0009 .0002 .0000 .0000 .0000 0.002 1.9
SW .0007 .0002 .0000 .0005 .0000 .0000 0.001 3.3
WSW .0007 .0000 .0002 .0002 .0000 .0000 0.001 2.6
W .0007 .0011 .0007 .0000 .0000 .0000 0.002 2.5
WNW .0014 .0020 .0002 .0002 .0000 .0000 0.004 2.4
NW .0036 .0048 .0009 .0009 .0000 .0000 0.010 2.5
NNW .0045 .0063 .0059 .0007 .0007 .0000 0.018 3.1-------------------------------------------------------------------------
TOT:0.055 0.083 0.022 0.005 0.001 0.000 0.167
**********
AVG:1.4 2.5 4.0 6.4 9.2 0.0 2.5
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE ~>736
OUT OF 4414 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS ~>2
10 METER WIND DATA ANAlYSIS
FROM 71 1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
HOUR OF THE DAY 08-12
+----------WIND SPEED CLASSES (M/S)----------+
DIR
0.0-
1.8
1.8-
3.3
3.3-
5.4
5.4
8.4
8.4
11.0
>
11.0
AVERAGE
WIND
TOTAL SPEED
TOT:0.035
(
N
NNE
NE
ENE
E
ESE
SE
SSE
S
ssw
SW
wsw
W
WNW
NW
NNW
*****AVG:
.0020
.0029
.0018
.0020
.0023
.0025
.0020
.0023
.0039
.0036
.0034
.0023
.0005
.0011
.0011
.0009
*****
1.4
.0009
.0020
.0009
.0025
.0014
.0045
.0084
.0150
.0213
.0184
.0075
.0027
.0025
.0018
.0016
.0016
0.093
2.6
.0005
.0002
.0002
.0007
.0000
.0007
.0054
.0063
.0057
.0032
.0025
.0018
.0009
.0002
.0007
.0009
0.030
4.0
.0005
.0002
.0002
.0002
.0002
.0000
.0000
.0000
.0011
.0011
.0000
.0000
.0000
.0005
.0002
.0009
0.005
6.7
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0014
.0002
.0000
.0000
.0000
.0005
.0005
.0002
0.003
9.7
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0002
.0007
.0000
.0000
.0000
.0000
.0000
.0000
0.001
12.3
0.004
0.005
0.003
0.005
0.004
0.008
0.016
0.024
0.034
0.027
0.013
0.007
0.004
0.004
0.004
0.005
0.166
2.4
2.0
2.3
2.4
2.1
2.3
2.9
2.9
3.2
3.1
2.6
2.6
2.8
3.6
3.5
3.9
2.9
TOTAL NUMBER OF VAlID READINGS FOR THIS TABLE ~>734
OUT OF 4414 TOTAl VALID HOURS
TOTAL NUMBER OF MISSING HOURS ~>2
10 METER WIND DATA ANALYSIS
FROM 71 1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
HOUR OF THE DAY 12-16
+----------WIND SPEED CLASSES (M/S)----------+
DIR
0.0-
1.B
1.8-
3.3
3.3-
5.4
5.4
8.4
8.4
11.0
>
11.a
AVERAGE
WIND
TOTAL SPEED
N
NNE
NE
ENE
E
ESE
SE
SSE
S
SSW
SW
WSW
W
WNW
NW
NNW
.0002
.0002
.0002
.0007
.0000
.0007
.0005
.0018
.0025
.0036
.0014
.0007
.0007
.0009
.0002
.0002
.0011
.0016
.0014
.0011
.0018
.0018
.0036
.0036
.0136
.0195
.0120
.0072
.0025
.0018
.0009
.0018
.0018
.0007
.0005
.0005
.0000
.0000
.0018
.0034
.0050
.0093
.0097
.0054
.0016
.0034
.0036
.0036
.0011
.0002
.0007
.0005
.0000
.0000
.0000
.0002
.0007
.0016
.0034
.0034
.0016
.0011
.0041
.0034
.0000
.0000
.0000
.0002
.0000
.0000
.0000
.0000
.0000
.0007
.0000
.0000
.0000
.0000
.0009
.0016
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0002
.0009
.0000
.0000
.0000
.0000
.0000
0.004
0.003
0.003
0.003
0.002
0.002
0.006
0.009
0.022
0.035
0.027
0.017
0.006
0.007
0.010
0.011
4.4
3.0
4.0
3.8
2.2
2.4
3.1
3.1
3.0
3.3
3.9
4.0
3.8
4.0
5.6
5.4
TOT:0.014 0.075
**********AVG:1.5 2.6
0.050
4.2
O.022
6.7
0.003
9.0
0.001
11.7
0.167
3.7
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE =>736
OUT OF 4414 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS =>2
(
10 METER WIND DATA ANALYSIS
FROM 7/1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
HOUR OF THE DAY 16-20
+----------WIND SPEED CLASSES (M/Sj----------+
DIR
0.0-
1.8
1.8-
3.3
3.3-
5.4
5.4
8.4
8.4
11.0
>
11.0
AVERAGE
WIND
TOTAL SPEED
TOT:0.028
N
NNE
NE
ENE
E
ESE
SE
SSE
S
ssw
SW
wsw
W
WN,l
NW
NNW
*****AVG:
.0023
.0023
.0011
.0023
.0018
.0014
.0011
.0014
.0027
.0041
.0023
.0020
.0007
.0014
.0002
.0011
*****1.4
.0054
.0079
.0032
.0007
.0007
.0005
.0025
.0041
.0052
.0061
.0063
.0041
.0025
.0016
.0032
.0048
0.059
2.6
.0079
.0077
.0018
.0014
.0009
.0002
.0009
.0016
.0011
.0020
.0023
.0032
.0043
.0032
.0084
.0082
0.055
4.2
.0011
.0009
.0023
.0007
.0002
.0002
.0002
.0000
.0002
.0005
.0009
.0020
.0036
.0014
.0027
.0043
0.021
6.5
.0000
.0002
.0007
.0002
.0000
.0000
.0002
.0000
.0000
.0011
.0000
.0002
.0000
.0000
.0002
.0002
0.003
9.2
.0000
.0002
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0002
.0000
.0000
.0000
.0000
.0000
0.000
11.7
0.017
0.019
0.009
0.005
0.004
0.002
0.005
0.007
0.009
0.014
0.012
0.012
0.011
0.007
0.015
0.019
0.167
3.4
3.4
4.2
3.2
2.5
2.1
3.1
2.7
2.6
3.2
3.2
3.7
4.3
3.7
4.4
4.3
3.6
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE =>736
OUT OF 4414 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS =>2
10 METER WIND DATA ANALYSIS
FROM 7/1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
HOUR OF THE DAY 20-24
+----------WIND SPEED CLASSES (M/S)----------+
DIR
0.0-
1.8
1.8-
3.3
3.3-
5.4
5.4
8.4
8.4
11.0
>
ll.O
AVERAGE
WIND
TOTAL SPEED
N
NNE
NE
ENE
E
ESE
SE
SSE
S
SSW
SW
wsw
W
WNW
NW
NNW
.0029
.0039
.0014
.0009
.0005
.0005
.0014
.0000
.0007
.0007
.0009
.0000
.0000
.0009
.0014
.0023
.0168
.0181
.0068
.0020
.0014
.0009
.0027
.0016
.0009
.0018
.0007
.0009
.0005
.00ll
.0029
.0068
.0215
.0161
.0041
.0020
.0007
.00ll
.0009
.0009
.0009
.0009
.0000
.0009
.0007
.0005
.0054
.0120
.0005
.0018
.0007
.0000
.0005
.0005
.0005
.0000
.0014
.0014
.0000
.0005
.0005
.0002
.0007
.0034
.0000
.0005
.0000
.0000
.0000
.0000
.0000
.0000
.0002
.0000
.0002
.0000
.0000
.0000
.0000
.0005
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0002
.0002
.0000
.0000
.0000
.0000
.0000
0.042
0.040
0.013
0.005
0.003
0.003
0.005
0.002
0.004
0.005
0.002
0.002
0.002
0.003
0.010
0.025
3.4
3.3
3.2
2.9
3.7
3.5
2.9
3.2
4.6
4.3
3.9
4.3
4.4
2.7
3.5
4.1
TOT:0.018 0.066
***-1<******
AVG:1.5 2.7
0.069
4.1
0.012
6.6
0.001
9.2
0.000
ll.5
0.167
3.5
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE ~>736
OUT OF 4414 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS ~>2
(
AppendixD
Joint Frequency Distribution
ofWiud Speed byWind Direction
by Stability Class
July -December 2008
10 METER WIND DATA ANALYSIS
FROM 7/1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
STABILITY CLASS A
+----------WIND SPEED CLASSES (M/S)----------+
AVERAGE
0.0-1.8-3.3-5.4 8.4 >WIND
DIR 1.8 3.3 5.4 8.4 11.0 11.0 TOTAL SPEED-------------------------------------------------------------------------
N .0048 .0029 .0000 .0000 .0000 .0000 0.008 1.7
NNE .0048 .0032 .0000 .0000 .0000 .0000 0.008 1.7
NE .0050 .0029 .0000 .0000 .0000 .0000 0.008 1.7
ENE .0057 .0027 .0000 .0000 .0000 .0000 0.008 1.7
E .0036 .0032 .0000 .0000 .0000 .0000 0.007 1.9
ESE .0039 .0036 .0000 .0000 .0000 .0000 0.007 1.9
SE .0036 .0077 .0000 .0000 .0000 .0000 0.011 2.1
SSE .0048 .0113 .0000 .0000 .0000 .0000 0.016 2.2
(
S .0066 .0211 .0000 .0000 .0000 .0000 0.028 2.2
SSW .0063 .0220 .0000 .0000 .0000 .0000 0.028 2.2
sw .0052 .0122 .0000 .0000 .0000 .0000 0.017 2.1
WSW .0032 .0068 .0000 .0000 .0000 .0000 0.010 2.2
W .0016 .0045 .0000 .0000 .0000 .0000 0.006 2.1
WNW .0025 .0023 .0000 .0000 .0000 .0000 0.005 1.9
NW .0034 .0027 .0000 .0000 .0000 .0000 0.006 1.7
NNW .0029 .0032 .0000 .0000 .0000 .0000 0.006 1.8-------------------------------------------------------------------------
TOT:0.068 0.112 0.000 0.000 0.000 0.000 0.180
AVG:1.4 2.4 0.0 0.0 0.0 0.0 2.0
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE ~>795
OUT OF 4414 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS ~>2
I,
10 METER WIND DATA ANALYSIS
FROM 71 1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
STABILITY CLASS B
+----------WIND SPEED CLASSES (M/S)----------+
AVERAGE
0.0-1.8-3.3-5.4 8.4 >WIND
DIR 1.8 3.3 5.4 8.4 11.0 11.0 TOTAL SPEED
-------------------------------------------------------------------------
N .0009 .0007 .0007 .0000 .0000 .0000 0.002 2.5
NNE .0016 .0011 .0007 .0000 .0000 .0000 0.003 2.3
NE .0014 .0011 .0000 .0000 .0000 .0000 0.002 1.9
ENE .0002 .0016 .0009 .0000 .0000 .0000 0.003 3.0
E .0005 .0007 .0005 .0000 .0000 .0000 0.002 2.7
ESE .0000 .0027 .0005 .0000 .0000 .0000 0.003 2.9
SE .0005 .0050 .0034 .0000 .0000 .0000 0.009 3.2
(SSE .0009 .0084 .0063 .0000 .0000 .0000 0.016 3.2
S .0014 .0122 .0050 .0000 .0000 .0000 0.019 3.0
SSW .0014 .0145 .0059 .0000 .0000 .0000 0.022 3.0
SW .0005 .0070 .0061 .0000 .0000 .0000 0.014 3.2
WSW .0000 .0041 .0036 .0000 .0000 .0000 0.008 3.3
W .0000 .0018 .0027 .0000 .0000 .0000 0.005 3.3
WNW .0002 .0018 .0007 .0000 .0000 .0000 0.003 3.0
NW .0000 .0011 .0020 .0000 .0000 .0000 0.003 3.5
NNW .0005 .0023 .0014 .0000 .0000 .0000 0.004 3.0
-------------------------------------------------------------------------
TOT:0.010 0.066 0.040 0.000 0.000 0.000 0.116
AVG:1.5 2.9 3.6 0.0 0.0 0.0 3.0
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE =>513
OUT OF 4414 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS =>2
10 METER WIND DATA ANALYSIS
FROM 7/1/200B THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
STABILITY CLASS C
+----------WIND SPEED CLASSES (M/S)----------+
AVERAGE
0.0-1.B-3.3-5.1 B.1 >WIND
DIR loB 3.3 5.4 B.4 11.0 11.0 TOTAL SPEED
-------------------------------------------------------------------------
N .0007 .001B ·0031 .0007 .0000 .0000 0.007 3.7
NNE .0007 .0036 .0016 .0005 .0000 .0000 O.006 3.0
NE .001B .0020 ·0011 .0009 .0000 .0000 0.006 3.1
ENE .0002 .0005 .0005 .0000 .0000 .0000 0.001 2.B
E .0000 .0002 .0002 .0002 .0000 .0000 0.001 3.7
ESE .0005 .0005 .0007 .0000 .0000 .0000 0.002 2.9
SE .0000 .0018 .0011 .0000 .0000 .0000 0.006 3.9
(SSE .0005 .0020 .0048 .0005 .0000 .0000 O.OOB 3.9
S .0007 .0036 .0050 .0007 .0000 .0000 0.010 3.7
SSW .0009 .0011 .0068 .0005 .0000 .0000 0.012 3.6
SW .0000 .0020 .0059 •0007 .0000 .0000 0.009 4.2
WSW .0005 .0011 .004B .0009 .0000 .0000 0.007 4.2
W .0000 .0005 .0023 .0007 .0000 .0000 0.003 4.4
WNW .0002 .0009 .0043 .0002 .0000 .0000 0.006 4.1
NW .0002 .0018 .0057 .0007 .0000 .0000 O.OOB 1.2
NNW .0002 .0011 ·0059 .0011 .0000 .0000 0.009 1.1
-------------------------------------------------------------------------
TOT:0.007 0.02B 0.057 0.008 0.000 0.000 0.100
AVG:1.6 2.6 1.1 5.7 0.0 0.0 3.8
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE =>111
OUT OF 4414 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS =>2
I...
,
(
10 METER WIND DATA ANALYSIS
FROM 7/1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
STABILITY CLASS 0
+----------WIND SPEED CLASSES (M/S)----------+
AVERAGE
0.0-1.8-3.3-5.4 8.4 >WIND
DIR 1.8 3.3 5.4 8.4 11.a 11.0 TOTAL SPEED
-------------------------------------------------------------------------
N .0029 .0245 ·0202 .0039 .0000 .0000 0.051 3.5
NNE .0032 .0378 .0165 .0032 .0007 .0002 0.062 3.3
NE .0009 .0138 .0057 .0032 .0007 .0000 0.024 3.7
ENE .0002 .0032 .0039 .0014 .0005 .0000 0.009 4.1
E .0000 .0016 ·0011 .0007 .0000 .0000 0.003 4.2
ESE .0000 .0025 .0032 .0007 .0000 .0000 0.006 3.7
SE .0000 .0036 .0027 .0020 .0002 .0000 0.009 4.2
(SSE .0000 .0034 .0027 .0002 .0000 .0000 0.006 3.4
S .0009 .0048 .0041 .0057 .0020 .0002 0.018 5.2
SSW .0016 .0052 .0034 .0043 .0023 .0011 0.018 5.4
SW .0009 .0034 .0023 .0041 .0002 .0014 0.012 5.5
WSW .0000 .0007 .0034 .0054 .0002 .0000 0.010 5.7
W .0000 .0011 ·0029 .0052 .0000 .0000 0.009 5.5
WNW .0002 .0023 .0034 .0032 .0005 .0000 0.010 4.7
NW .0000 .0039 .0111 .0095 .0020 .0000 0.027 5.3
NNW .0005 .0063 .0242 .0134 .0034 .0000 O.048 5.1
-------------------------------------------------------------------------
TOT:0.011 0.118 0.111 0.066 0.013 0.003 0.322
AVG:1.6 2.7 4.2 6.7 9.2 11.9 4.3
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE ~>1420
OUT OF 4414 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS ~>2
(
10 METER WIND DATA ANALYSIS
FROM 7/1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
STABILITY CLASS E
+----------WIND SPEED CLASSES (M/S)----------+
DIR
0.0-
1.8
1.8-
3.3
3.3-
5.4
5.4
8.4
8.4
11.0
>
11.0
AVERAGE
WIND
TOTAL SPEED
N
NNE
NE
ENE
E
ESE
SE
SSE
S
SSW
SW
WSW
W
WNW
NW
NNW
.0016
.0050
.0018
.0002
.0000
.0000
.0005
.0005
.0011
.0009
.0005
.0002
.0002
.0000
.0007
.0005
.0197
.0285
.0093
.0039
.0011
.0007
.0016
.0011
.0020
.0016
.0011
.0009
.0007
.0014
.0029
.0066
.0242
.0220
.0023
.0007
.0000
.0002
.0000
.0002
.0016
.0007
.0002
.0000
.0002
.0002
.0018
.0075
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
.0000
0.046
0.056
0.013
0.005
0.001
0.001
0.002
0.002
0.005
0.003
0.002
0.001
0.001
0.002
0.005
0.014
3.3
3.1
2.8
2.6
2.6
3.0
2.5
2.3
2.9
2.4
2.7
2.7
2.3
2.8
2.9
3.6
TOT:0.014
AVG:1.6
0.083
2.7
0.062
4.0
0.000
0.0
0.000
0.0
0.000
0.0
0.159
3.1
\.
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE =>700
OUT OF 4414 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS ~>2
10 METER WIND DATA ANALYSIS
FROM 71 1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
STABILITY CLASS F
+----------WIND SPEED CLASSES (M/S)----------+
AVERAGE
0.0-1.8-3.3-5.4 8.4 >WIND
DIR 1.8 3.3 5.4 8.4 11.0 11.0 TOTAL SPEED
-------------------------------------------------------------------------
N .0088 .0079 .0000 .0000 .0000 .0000 0.017 1.9
NNE .0086 .0082 .0000 .0000 .0000 .0000 0.017 1.8
NE .0079 .0052 .0000 .0000 .0000 .0000 0.013 1.7
ENE .0075 .0043 .0000 .0000 .0000 .0000 0.012 1.7
E .0045 .0018 .0000 .0000 .0000 .0000 0.006 1.7
ESE .0034 .0014 .0000 .0000 .0000 .0000 0.005 1.5
SE .0036 .0020 .0000 .0000 .0000 .0000 0.006 1.6
(SSE .0016 .0018 .0000 .0000 .0000 .0000 0.003 1.8\
S .0020 .0002 .0000 .0000 .0000 .0000 0.002 1.4
SSW .0032 .0011 .0000 .0000 .0000 .0000 0.004 1.7
SW .0016 .0016 .0000 .0000 .0000 .0000 0.003 1.8
WSW .0025 .0018 .0000 .0000 .0000 .0000 0.004 1.7
W .0009 .0016 .0000 .0000 .0000 .0000 0.002 1.9
WNW .0027 .0020 .0000 .0000 .0000 .0000 0.005 1.7
NW .0048 .0050 .0000 .0000 .0000 .0000 0.010 1.9
NNW .0059 .0079 .0000 .0000 .0000 .0000 0.014 1.9
-------------------------------------------------------------------------
TOT:0.070 0.054 0.000 0.000 0.000 0.000 0.123
AVG:1.4 2.3 0.0 0.0 0.0 0.0 1.8
1'OTAL NUMBER OF VALID READINGS FOR THIS TABLE ~>545
OUT OF 4414 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS =>2
AppendixE
2008 Annnal Joint Frequency Distribution
of Wind Speed by Wind Direction
by Stability Class
(10 METER WIND DATA ANALYSIS
FROM 1/1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
STABILITY CLASS A
+----------WIND SPEED CLASSES (M/S)----------+
AVERAGE
O.0-1.8-3.3-5.4 8.4 >WIND
DIR 1.8 3.3 5.4 8.4 11.0 11.a TOTAL SPEED-------------------------------------------------------------------------
N .0045 .0031 .0000 .0000 .0000 .0000 0.008 1.7
NNE .0045 .0023 .0000 .0000 .0000 .0000 0.007 1.7
NE .0042 .0028 .0000 .0000 .0000 .0000 0.007 1.7
ENE .0049 .0030 .0000 .0000 .0000 .0000 0.008 1.7
E .0040 .0028 .0000 .0000 .0000 .0000 0.007 1.9
ESE .0039 .0036 .0000 .0000 .0000 .0000 0.008 1.9
SE .0045 .0065 .0000 .0000 .0000 .0000 0.011 2.0
(SSE .0049 .0101 .0000 .0000 .0000 .0000 0.015 2.1
S .0041 .0147 .0000 .0000 .0000 .0000 0.019 2.2
SSW .0047 .0161 .0000 .0000 .0000 .0000 0.021 2.2
SW .0050 .0107 .0000 .0000 .0000 .0000 0.016 2.1
WSW .0042 .0056 .0000 .0000 .0000 .0000 0.010 2.1
W .0026 .0046 .0000 .0000 .0000 .0000 0.007 2.0
WNW .0027 .0026 .0000 .0000 .0000 .0000 0.005 1.9
NW .0042 .0021 .0000 .0000 .0000 .0000 0.006 1.6
NNW .0026 .0027 .0000 .0000 .0000 .0000 0.005 1.8
-------------------------------------------------------------------------
TOT:0.066 0.093 0.000 0.000 0.000 0.000 0.159
AVG:1.4 2.4 0.0 0.0 0.0 0.0 2.0
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE =>1394
OUT OF 8779 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS ~>5
10 METER WIND DATA ANALYSIS
FROM 1(1/2008 THROUGH 12(31(2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
STABILITY CLASS B
+----------WIND SPEED CLASSES IM(S)----------+
AVERAGE
0.0-1.8-3.3-5.4 8.4 >WIND
DIR 1.8 3.3 5.4 8.4 11.0 11.0 TOTAL SPEED
-------------------------------------------------------------------------
N .0010 .0009 .0008 .0000 .0000 .0000 0.003 2.5
NNE ·0014 .0010 .0008 .0000 .0000 .0000 0.003 2.4
NE ·0011 .0015 .0007 .0000 .0000 .0000 0.003 2.5
ENE .0001 .0015 .0005 .0000 .0000 .0000 0.002 2.8
E ·0003 .0007 .0005 .0000 .0000 .0000 0.001 2.7
ESE ·0001 .0019 .0005 .0000 .0000 .0000 0.003 3.0
SE ·0003 .0036 .0021 .0000 .0000 .0000 0.006 3.1
(SSE .0006 .0080 .0043 .0000 .0000 .0000 0.013 3.1
S .0009 .0103 .0059 .0000 .0000 .0000 0.017 3.1
SSW ·0009 .0123 .0063 .0000 .0000 .0000 0.019 3.1
SW ·0004 .0068 .0056 .0000 .0000 .0000 0.013 3.2
WSW ·0006 .0036 .0027 .0000 .0000 .0000 0.007 3.1
W .0007 .0027 .0015 .0000 .0000 .0000 0.005 2.8
WNW .0003 .0018 .0009 .0000 .0000 .0000 0.003 3.0
NW .0002 .0014 .0017 .0000 .0000 .0000 0.003 3.3
NNW .0003 .0016 .0009 .0000 .0000 .0000 0.003 2.9
-------------------------------------------------------------------------
TOT:0.009 0.060 0.036 0.000 0.000 0.000 0.105
AVG:1.5 2.9 3.6 0.0 0.0 0.0 3.0
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE ~>918
OUT OF 8779 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS ~>5
(
(
,
10 METER WIND DATA ANALYSIS
FROM 1/1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
STABILITY CLASS C
+----------WIND SPEED CLASSES (M/S)----------+
AVERAGE
0.0-1.8-3.3-5.4 8.4 >WIND
DIR 1.8 3.3 5.4 8.4 11.0 11.0 TOTAL SPEED
-------------------------------------------------------------------------
N .0005 .0010 .0038 .0009 .0000 .0000 0.006 4.1
NNE .0007 .0028 .0019 .0003 .0000 .0000 0.006 3.1
NE .0015 .0024 .0016 .0009 .0000 .0000 0.006 3.3
ENE .0002 .0009 .0009 .0003 .0000 .0000 0.002 3.5
E .0000 .0005 .0006 .0001 .0000 .0000 0.001 3.9
ESE .0002 .0002 .0008 .0000 .0000 .0000 0.001 3.6
SE .0000 .0011 .0033 .0002 .0000 .0000 0.005 4.1
(SSE .0002 .0023 .0048 .0005 .0000 .0000 0.008 3.9
S .0003 .0028 .0071 .0008 .0000 .0000 0.011 4.0
SSW .0006 .0036 .0093 .0015 .0000 .0000 0.015 4.0
SW .0002 .0026 .0064 .0014 .0000 .0000 0.011 4.1
WSW .0002 .0015 .0054 .0016 .0000 .0000 0.009 4.3
W .0000 .0007 .0031 .0018 .0000 .0000 0.006 4.7
WNW .0001 .0006 .0041 .0005 .0000 .0000 0.005 4.4
NW .0001 .0011 .0052 .0013 .0000 .0000 0.008 4.5
NNW .0002 .0009 .0046 .0011 .0000 .0000 0.007 4.4
-------------------------------------------------------------------------
TOT:0.005 0.025 0.063 0.013 0.000 0.000 0.106
AVG:1.5 2.6 4.5 5.7 0.0 0.0 4.0
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE =>933
OUT OF 8779 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS =>5
(
10 METER WIND DATA ANALYSIS
FROM 1/1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
STABILITY CLASS 0
+----------WIND SPEED CLASSES (M/S)----------+
AVERAGE
0.0-1.8-3.3-5.4 8.4 >WIND
DIR 1.8 3.3 5.4 8.4 11.0 11.0 TOTAL SPEED-------------------------------------------------------------------------
N .0017 .0179 .0224 .0084 .0042 .0010 0.056 4.6
NNE .0022 .0345 .0183 .0056 .0018 .0006 0.063 3.7
NE .0012 .0191 .0077 .0033 .0011 .0000 0.032 3.6
ENE .0003 .0044 .0036 .0011 .0005 .0000 0.010 3.8
E .0000 .0011 .0016 .0007 .0000 .0000 0.003 4.2
ESE .0001 .0016 .0016 .0005 .0000 .0000 0.004 3.6
SE .0001 .0026 .0031 .0022 .0003 .0000 0.008 4.5
(SSE .0000 .0027 .0026 .0007 .0002 .0000 0.006 4.0,
S .0008 .0047 .0043 .0051 .0018 .0005 0.017 5.2
SSW .0009 .0041 .0060 .0069 .0027 .0014 0.022 5.9
SW .0007 .0035 .0038 .0084 .0021 .0015 0.020 6.1
WSW .0000 .0017 .0038 .0075 .0016 .0005 0.015 6.2
W .0001 .0018 .0048 .0093 .0018 .0005 0.018 6.1
WNW .0001 .0018 .0048 .0052 .0016 .0002 0.014 5.7
NW .0001 .0034 .0095 .0126 .0021 .0003 0.028 5.6
NNW .0005 .0044 .0200 .0166 .0044 .0005 0.046 5.6
-------------------------------------------------------------------------
TOT:0.009 0.110 0.118 0.094 0.026 0.007 0.364
AVG:1.5 2.7 4.3 6.7 9.4 12.3 4.9
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE =>3195
OU1'OF 8779 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS ~>5
(
(
10 METER WIND DATA ANALYSIS
FROM 1/1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
STABILITY CLASS E
+----------WIND SPEED CLASSES (M/S)----------+
AVERAGE
0.0-1.B-3.3-5.4 8.4 >WIND
DIR 1.B 3.3 5.4 8.4 11.0 11.0 TOTAL SPEED
-------------------------------------------------------------------------
N .0009 .0146 .0185 .0000 .0000 .0000 0.034 3.4
NNE .0037 .0249 .0195 .0000 .0000 .0000 0.048 3.1
NE .0018 .0104 .0039 .0000 .0000 .0000 0.016 2.9
ENE .0003 .0028 .0011 .0000 .0000 .0000 0.004 2.8
E .0001 .0013 .0002 .0000 .0000 .0000 0.002 2.8
ESE .0001 .0007 .0001 .0000 .0000 .0000 0.001 2.7
SE .0003 .0016 .0000 .0000 .0000 .0000 0.002 2.5
SSE .0002 .0014 .0003 .0000 .0000 .0000 0.002 2.7
S .0009 .0019 .0014 .0000 .0000 .0000 0.004 2.9
SSW .0006 .0015 .0007 .0000 .0000 .0000 0.003 2.5
SW .0002 .0010 .0006 .0000 .0000 .0000 0.002 3.0
WSW .0001 .0007 .0001 .0000 .0000 .0000 0.001 2.8
W .0001 .0009 .0002 .0000 .0000 .0000 0.001 2.8
WNW .0000 .0015 .0008 .0000 .0000 .0000 0.002 3.1
NW .0003 .0026 .0016 .0000 .0000 .0000 0.005 3.2
NNW .0002 .0049 .0067 .0000 .0000 .0000 0.012 3.7
-------------------------------------------------------------------------
TOT:0.010 0.073 0.056 0.000 0.000 0.000 0.139
AVG:1.6 2.7 4.0 0.0 0.0 0.0 3.1
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE =>1218
OUT OF 8779 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS =>5
(
10 METER WIND DATA ANALYSIS
FROM 1/1/2008 THROUGH 12/31/2008
WHITE MESA MILL METEOROLOGICAL STATION
FREQUENCY OF OCCURRENCE OF WIND SPEED BY DIRECTION
STABILITY CLASS F
+----------WIND SPEED CLASSES (M/S)----------+
AVERAGE
0.0-1.8-3.3-5.4 8.4 >WIND
DIR 1.8 3.3 5.4 8.4 11.0 11.0 TOTAL SPEED-------------------------------------------------------------------------
N .0082 .0084 .0000 .0000 .0000 .0000 0.017 1.9
NNE .0089 .0082 .0000 .0000 .0000 .0000 0.017 1.9
NE .0083 .0057 .0000 .0000 .0000 .0000 0.014 1.7
ENE .0077 .0046 .0000 .0000 .0000 .0000 0.012 1.7
E .0048 .0016 .0000 .0000 .0000 .0000 0.006 1.6
ESE .0027 .0021 .0000 .0000 .0000 .0000 0.005 1.8
SE .0030 .0022 .0000 .0000 .0000 .0000 0.005 1.7
(SSE .0027 .0019 .0000 .0000 .0000 .0000 0.005 1.7
S .0027 .0016 .0000 .0000 .0000 .0000 0.004 1.7
SSW .0033 .0014 .0000 .0000 .0000 .0000 0.005 1.7
SW .0019 .0017 .0000 .0000 .0000 .0000 0.004 1.8
WSW .0024 .0019 .0000 .0000 .0000 .0000 0.004 1.8
W .0013 .0019 .0000 .0000 .0000 .0000 0.003 1.9
WNW .0027 .0022 .0000 .0000 .0000 .0000 0.005 1.6
NW .0043 .0040 .0000 .0000 .0000 .0000 0.008 1.8
NNVI .0057 .0074 .0000 .0000 .0000 .0000 0.013 1.9
-------------------------------------------------------------------------
TOT:0.071 0.057 0.000 0.000 O.000 0.000 0.128
AVG:1.4 2.3 0.0 0.0 0.0 0.0 1.8
TOTAL NUMBER OF VALID READINGS FOR THIS TABLE ~>1121
OUT OF 8779 TOTAL VALID HOURS
TOTAL NUMBER OF MISSING HOURS ~>5