DRC-2009-006749 - 0901a0688015233b

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WHITE MESA URANIUM MILL
2009 ANNUAL
SEEPS AND SPRINGS SAMPLING REPORT
State of Utah
Groundwater Discharge Permit No. UGW370004
Prepared by:
Denison Mines (USA) Corp.
1050 n'^ Street. Suite 950
Denver, CO 80265
November 30, 2009
WHITE MESA URANIUM MILL
2009 ANNUAL
SEEPS AND SPRINGS SAMPLING REPORT
State of Utah
Groundwater Discharge Permit No. UGW370004
Prepared by:
Denison Mines (USA) Corp.
1050 1 i h Street, Suite 950
Denver, CO 80265
November 30, 2009
TABLE OF CONTENTS
Page
1. INTRODUCTION.................................................. ................... 1
2.
3. SAl\.WLING EVENTS.. ..... .... ..... .... ..... ...... .......... ...... ........ ......... 1
3.1 General................................................................................ ... 1
3.2 2009 Sampling....................................................................... ... 1
3.2.1 July 9,2009 Sampling.............................................. ........... 1
3.2.2 Repeat Visits to Dry Seeps and Springs.................................... 1
3.2.3 November 18, 2009 Sampling of Westwater Seep............. ........... 2
3.3 Sample Procedure .................................................................. ... 2
4. SEEPS AND SPRINGS SURVEY AND CONTOUR MAP................. 3
5. EVALUATION OF ANALYTICAL DATA.................................... 3
5.1 Analytical Results...................................................................... 3
5.2 Evaluation of Analytical Results.................................................... 4
6. QUALITY ASSURANCE AND QUALITY CONTROL..................... 5
7. SIGNATURE AND CERTIFICATION.......................................... 6
Figure 1
Attachment A
Attachment B
November 2009 Groundwater Elevation Contour Map White
Mesa Mill Site and Vicinity
Field Data Record Sheets
Analytical Results
1
2009 ANNUAL SEEPS AND SPRINGS SAMPLING REPORT
1. INTRODUCTION
This is the 2009 Annual Seeps and Springs Sampling Report for the Denison Mines (USA) Corp.
("Denison") White Mesa Mill (the "Mill"), as required under Part I.P.7 of the Mill's State of
Utah Groundwater Discharge Permit No. 370004 (the "Permit") and Section 6.0 of the Mill's
Sampling Plan for Seeps and Springs in the Vicinity of the White Mesa Uranium Mill, Revision:
0, March 17,2009 (the "Plan").
2. SAMPLING EVENTS
2.1 General
Seeps and springs which were identified near the MiIl in the 1978 Environmental Report (Plate
2.6-10, Dames and Moore, January 30, 1978) are to be sampled annually in accordance with the
Plan and Part I.E.6 of the Permit. The Plan specifies the following sample locations: Corral
Canyon Seep, Corrals Seep, Ruin Spring, Cottonwood Seep, Westwater Seep and Entrance Seep.
2.2 2009 Sampling
2.2.1 July 9, 2009 Sampling
In accordance with the Plan, UDEQ was notified and samples were collected in the presence of a
State of Utah Department of Environmental Quality ("UDEQ") representative on July 9, 2009
from all seeps and springs which produced enough water to be able to sample, being Ruin
Spring, Cottonwood Seep and Entrance Seep. In addition to these samples, a duplicate sample
was collected from the Ruin Spring location which was identified as "Back Spring" on the
Laboratory Analysis sheets.
2.2.2 Repeat Visits to Dry Seeps and Springs.
During the July 9,2009 sampling event, Corral Canyon Seep, Corrals Seep and Westwater Seep
were dry, were not able to be sampled and did not warrant development opportunities with
limited hand tool excavation. The UDEQ representative at the sampling event concluded that
Corral Canyon Seep and Corrals Seep were so dry that no sampling was needed at those sites.
See the Field Data Record sheets for those sites, included as Attachment A. As a result, no
subsequent visits were made to those sites during the May 1, 2009 to July 15, 2009 sampling
period for 2009.
With respect to Westwater Seep, only slightly moist soil was observed on July 9, 2009. The
UDEQ representative concluded that the seep did not need to be sampled at that time, but that
Mill personnel should attempt to take a sample later in the fall of 2009 before winter. See the
Field Data Record sheet, included as Attachment A.
1
2.2.3 November 18,2009 Sampling of Westwater Seep
On November 18,2009 Mill staff visited Westwater Seep, at the suggestion of UDEQ staff, who
had observed some moisture at that location during a previous site visit. Mill staff observed
some moist soil at the seep on November 18, 2009. Mill staff used hand tools to excavate at the
moist area, which yielded a pool of water that was able to be sampled. See the Field Data
Record sheet included in Attachment A. Samples were taken on November 18, 2009. Sample
results are not available at the date of this Report, and will be submitted to the Executive
Secretary under a separate submission when available.
2.3 Sample Procedure
Samples were collected and containerized in the order of the parameters listed in Table 2 of the
Permit. Flow was sufficient for both the July 9, 2009 and, after development work, the
November 18,2009 sampling of Westwater Seep, to allow for all containers to be filled without
the need for repeated samplings at later times.
In the case of Ruin Spring, Entrance Seep, Cottonwood Seep and Westwater Seep, sample
bottles for volatile organic compounds ("VOCs") were filled directly from the seep or spring. It
was not necessary to use a clean stainless steel ladle to collect water until a sufficient volume is
contained in the ladle for transfer to the sample bottles, as contemplated by Section 5.0 of the
Plan.
With the exception of Westwater Seep, the remainder of the samples for heavy metals, all other
non-radiologics (i.e. fluoride, general inorganics, TDS, total cations and anions) and gross alpha
activity were collected by means of a peristaltic pump and delivered directly to the sample
containers. In the case of the samples for heavy metals and gross alpha, the samples were
delivered by a peristaltic pump directly to the sample containers through a 0.45 micron filter. All
samples were preserved by the addition of the appropriate preservative for the analytical
technique.
For Westwater Seep, it was not possible to locate the generator close enough to the seep to utilize
the peristaltic pump. After the samples for VOCs were taken, a clean previously un-used one
gallon sample jug was filled by dipping it into the excavated pool at Westwater Seep. The one
gallon jug was taken back to the Mill office, where samples for the remainder of the constituents
were taken by means of a peristaltic pump from the jug directly into the sample containers. For
heavy metas and gross alpha, the samples were delivered directly to the sample containers
through a 0.45 micron filter. The appropriate preservatives for the analytical technique were
added to the samples.
All sampling equipment was properly decontaminated prior to sampling and between sample
locations in accordance with Section 6.2.5 of the White Mesa Uranium Mill Ground Water
Monitoring Quality Assurance Plan (QAP), Revision-3, June 18,2008 (the "QAP"). For the July
9, 2009 and November 18, 2009 sampling events, no ladles were used, and the tubing on the
peristaltic pump that comes into contact with the sample water was disposed of between each
2
sampling. As a result, no equipment required decontamination, and no rinsate samples were
collected.
All samples were stored at 4 degrees C or less prior to laboratory analysis. Samples were
received by the Mill's contract laboratory at 3°C and were accepted by the laboratory as meeting
all incoming sample requirements.
Reporting limits utilized by the laboratory were required not to exceed the Ground Water Quality
Standards set out in Table 2 of the Permit. For TDS, sulfate and chloride, with respect to which
Ground Water Quality Standards are not set out in Table 2 of the Permit, repOlting limits of no
greater than 10 mglL, 1 mglL and 1 mg/L, respectively, were used.
3. SEEPS AND SPRINGS SURVEY AND CONTOUR MAP
The locations of the Seeps and Springs identified in the Plan were surveyed by a Certified Land
Surveyor on November 27,2009, in accordance with commonly accepted professional standards
and methods for land surveyors. The survey included State Plane NAD83 Coordinates
(northings and eastings) and vertical elevation within 1 foot of the highest point of the saturated
seepage face. The results of the survey are as indicated below and are depicted on the attached
Figure 1 showing the water levels for all Mill wells sampled during the 3rd Quarter, 2009 as well
as the location and elevation of the phreatic surfaces observed at each of the Seeps and Springs
sample locations.
Table I-Seeps and Springs Survey Locations*
*Survey results are preliminary, pending receipt of the final survey report.
4. EVALUATION OF ANALYTICAL DATA
4.1 Analytical Results
All samples taken were analyzed for all ground water compliance parameters found on Table 2
of the GWDP. The laboratory procedures utilized to conduct the analyses of parameters listed in
Table 2 were those utilized for groundwater sampling and as shown in Section 8.2 of the QAP.
In addition to these laboratory parameters, the pH, temperature and conductivity of each sample
was measured and recorded in the field.
The samples were not analyzed for semi-volatile organic compounds. Although the Plan
currently states that the samples will also be analyzed for semi-volatile organic compounds, the
3
Executive Secretary has advised Denison that such analysis is not required, and that the Permit
will be revised to eliminate the requirement for such analysis.
The results of the July 9, 2009 sampling events (including analyses for all parameters listed in
Table 2 of the GWDP) are provided in Attachment A. As noted above, the results for the
November 18, 2009 sampling of Westwater Seep are not available at this time, and will be
provided to the Executive Secretary when available.
4.2 Evaluation of Analytical Results
The results of the July 9 and November 18, 2009 sampling event show no evidence of Mill
influence in the water produced by the seeps and springs sampled. The lack of Mill influence on
Seeps and Springs is indicated by the fact that the parameters detected are within the ranges of
concentrations for all of the on-site monitoring wells and for available historic data for the seeps
and springs themselves. More specifically, the analyses indicated non-detect for nearly all
metals parameters, and VOCs were non-detect in all cases. For those metals detected,
concentrations are shown in Table 2 below and are compared to available historic data for Ruin
Spring and Cottonwood Seep and for on-site monitoring well data.
Table 2-Detected Constituents and Comparison to Historic Values and Mill Site
Monitoring Wells
Range of average historic
values for On-Site
Monitoring Wells as reported
on April 30, 2008 (MW-l,
MW-2, MW-3, MW-3A,
MW-5, MW-ll, MW-14, ND-106.5
MW-15, MW-17, MW-18,
MW-19, MW-20, MW-22,
MW-23, MW-24, MW-25 ,
MW-26, MW-27, MW-28,
MW-29, MW-30, MW-31
andMW
0.5-59.8 ND-30.0 ND-34,550 ND-36.0
From Figure 9 of 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 Couinty, Utah, November 16,2007, prepared by INTERA, Inc.
2From Figure 3, Table 10 and Appendix B of 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. and Table 16 and Appendix D of the Revised Background Groundwater Quality Report: Existing
Wells for Denison Mines (USA) COlp. 's White Mesa Uranium Mill Site, San Juan County, Utah, October 2007,
prepared by INTERA, Inc.
4
5. QUALITY ASSURANCE AND QUALITY CONTROL
For quality assurance purposes the sample set was sent to the Laboratory with a Trip Blank and a
duplicate sample was collected from Ruin Spring labeled "Back Spring". The Trip Blank did not
detect any of the constituents analyzed from Table 2 of the GWDP, thus assuring proper sample
handling practices at the facility and during transport to the laboratory.
The results of duplicate sampling were subjected to a Relative Percent Difference (RPD)
analyses to determine whether field sampling procedures were appropriate as indicated by RDP
values of less than 20%. For this event, duplicate analyses were within the RPD tolerance as
shown in Table 3 below. In addition, all duplicate laboratory analyses demonstrated acceptable
RPD values. Recovery data were within laboratory guidance with the exception of ammonia in a
sample matrix spike which showed a recovery rate of 122% and for silver in two sample matrix
spikes at 59 and 61 %, respectively. However, the laboratory control standard for ammonia was
well within the 20% guidance at 106% and the laboratory fortified blank for silver was at 103%.
Table 3-Duplicate Sample Comparison
Constituent Ruin Duplicate %RP
Spring of Ruin .D
···c I Spring.
Carbonate ND ND 0
Bicarbonate 233 232 0.43
Calcium 151 149 1.33
Chloride 28 27 3.64
Fluoride 0.5 0.5 0
Magnesium 32.3 31.6 2.19
Nitrogen-Ammonia 0.09 ND NA
Nitrogen-Nitrate 1.4 1.4 0
Potassium 3.3 3.2 3.08
Sodium 104 103 0.96
Sulfate 528 520 1.53
Lab pH 7.85 7.70 1.93
TDS 1010 996 1.40
Arsenic ND ND 0
Beryllium ND ND 0
Cadmium ND ND 0
Chromium ND ND 0
Cobalt ND ND 0
Copper ND ND 0
Iron ND ND 0
Lead ND ND 0
Manganese ND ND 0
Mercury ND ND 0
Molybdenum 17 17 0
Nickel ND ND 0
Selenium 12.2 12.3 -0.82
Silver ND ND 0
Thallium ND ND 0
Tin ND ND 0
5
Constituent Ruin Duplicate %RP
Spring of Ruin D
Spring
Uranium 9.11 9.00 1.22
Vanadium ND ND 0
Zinc ND ND 0
Gross Alpha * 0.2 -0.02 <2
Acetone ND ND 0
Benzene ND ND 0
Carbon tetrachloride ND ND 0
Chloroform ND ND 0
Chloromethane ND ND 0
MEK ND ND 0
Methylene Chloride ND ND 0
Naphthalene ND ND 0
Tetrahydrofuran ND ND 0
Toluene ND ND 0
Xylenes ND ND 0
6. SIGNATURE AND CERTIFICATION
This document was prepared by Denison Mines (USA) Corp. on November 30, 2009.
DENISON MINES (USA) CORP.
David C. Fry enlund
Vice President, Regulatory Affairs and Counsel
Certification
I certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and belief, true, accurate,
and complete. I am aware that there are significant penalties for submitting false information,
includi the ossibility of fine and imprisonment for knowing violations.
Davi
Vice President, Regulatory Affairs and Counsel
Denison Mines (USA) Corp.
6
Attachment A
Field Data Record-Seeps and Springs Sampling
Time and Date of Sampling: 7 . I . 0 l'
Seep or Spring location: W",) r Ue-.7;T rf'
Sampling Personnel:
Weather Conditions at time of Sampling:
Sampling Equipment Utilized:
Sampling Method Utilized:
Estimated Seep or Spring Flow rate:
Paramaters to be analyzed at the Laboratory:
Field Parameter Measurments:
PH
Temperature
Conductivity
Attachment A
Field Data Record-Seeps and Springs Sampling
Time and Date of Sampling: 7· ? ;2 0 0 7'
Seep or Spring Location:
Sampling Personnel:
Weather Conditions at time of Sampling:
Sampling Equipment Utilized:
Sampling Method Utilized:
Estimated Seep or Spring Flow rate:
Paramaters to be analyzed at the Laboratory:
Field Parameter Measurments:
PH
Temperature
Conductivity
(
Attachment A
Field Data Record-Seeps and Springs Samgling
Time and Date of Sampling:
Seep or Spring Location: Cv £~H'7 .,4 /Ji..d7
Sampling Personnel:
ON May/try /.;J~ a"./
Weather Conditions at time of Sampling:
Sampling Equipment Utilized:
Sampling Method Utilized:
Estimated Seep or Spring Flow rate:
Paramaters to be analyzed at the Laboratory:
Field Parameter Measurments:
PH
Temperature
Conductivity
(
Attachment A
Field Data Record-Seeps and Springs Sampling
Time and Date of Sampling: t· 1-. .;<. <aJ1' 0130
Seep or Spring location:
Sampling Personnel:
Sampling Equipment Utilized:
Sampling Method Utilized:
Estimated Seep or Spring Flow rate:
Paramaters to be analyzed at the laboratory:
Field Parameter Measurments:
PH 1b.Y
Temperature JCI,06
Conductivity 'l~j.7
Cr(l '.?>b~
:r;",-b. ;13 K
Attachment A
Field Data Record-Seeps and Springs Sampling
Time and Date of Sampling: 1 . 7 ·zaar It :lS-i
Seep or Spring location:
Sampling Personnel:
Weather Conditions at time of Sampling:
Sampling Equipment Utilized:
Sampling Method Utilized:
Estimated Seep or Spring Flow rate: ~ ~t1 ",;2S -",s-&em
Field Parameter Measurments:
PH 730
Temperature 1(;·3 J
0, I
( (
Attachment A
Field Data RecordMSeeDs and Springs Sampling
Time and Date of Sampling: Z 7 -,2001 140[)
Seep or Spring location:
Sampling Personnel:
Sampling Equipment Utilized:
Sampling Method Utilized:
Estimated Seep or Spring Flow rate:
Paramaters to be analyzed at the laboratory: dJI1P12 #-CIt l{ Q
Field Parameter Measurments:
PH
Temperature
Conductivity
.....,.-( I
f .fA,,/).
17" 10
.( ( ..
P.Uacnment A
Time and Date of Sampling: 1/-I g. -24t2. '!
Seep or Spring location:
Sampling Personnel:
Weathel" Conditions at time of Sampling:
Estimated Seep or Spring Flow rate:
Paramaters to be analvzed at the laboratory:
Field Parameter Measurments:
PH 7t~
Temperature
Conductivity
\
( "
J;' I f;<()O r
WtJ1 WIr7?!l
~MfI6D 1/-1 Jt'ls
c
(. (
\.
1/ It-JJJ()/
jA/tJ1 1AJ1f1U-
~mfk~.41 jJ¥s
ENERGYLABORATORIE9, INC •• 2393 SaH Creek Highway (82801) ·P.O Box3258 • Casper, WY8280.2 ,ggfl{C>Y 701/ Free 888..235.0515 • 307.235.0515 • Fax [phone] • [e-mail] • www.energylab.com
LAflO/U1 I (JIm ~
LABORATORY ANALYTICAL REPORT
Client: Denison Mines (USA) Corp
Project: Annual Spring Sampling
LablD: C09070370-001
Client Sample ID: Ruin Spring
Analyses
MAJOR IONS
Carbonate as C03
Bicarbonate as HC03
Calcium
Chloride
Fluoride
Magnesium
Nitrogen. Ammonia as N
Nitrogen. Nitrate+Nilrite as N
Potassium
Sodium
Sulfate
PHYSICAL PROPERTIES
pH
Solids, Total Dissolved TOS @ 180 C
METALS -DISSOLVED
Arsenic
Beryllium
Cadmium
Chromium
Cob all
Copper
Iron
Lead
Manganese
Mercury
Molybdenum
Nickel
Selenium
Silver
Thallium
Tin
Uranium
Vanadium
Zinc
RADIONUCLIDES -DISSOLVED
Gross Alpha minus Rn & U
Gross Alpha minus Rn & U Precision (:I:)
Gross Alpha minus Rn & U MDC
Report
Definitions:
RL -Analyte reporting limit.
QCL -Quality control limit.
Result
NO
233
151
28
0.5
32.3
0.09
1.4
3.3
104
528
7.85
1010
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
17
NO
12.2
NO
NO
NO
9.11
NO
NO
0.2
0.5
O.B
_._. __ ._---
Units
mglL
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
S.u.
mg/L
ug/l
ug/L
ug/l
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
uglL
ug/L
ug/L
ug/L
pCilL
pC ilL
pCilL
MOC -Minimum detectable concenlration
U -Not detected at minimum detectable concentration
Report Date: 08/06/09
Collection Date: 07/07109 14:00
DateReceived: 07/09/09
Matrix: Aqueous
MCU
Qualifier RL QCL Method Analysis Date 1 By
D
U
A2320 B 07/13/0912:26/1jl
1 A2320 B 07/13/0912:26/1jl
0.5 E200.7 07/20/09 15:30 I cp
1 A4500-CI B 07/21/0909:51 I ja
0.1 A4500-F C 07/10/0912:03/1jl
0.5 E200.7 07/20/0915:30 I cp
0.05 A4500-NH3 G 07/14/09 14:291 jal
0.1 E353.2 07/22109 12:481 jal
0.5 E200.7 07/20/09 15:30 I cp
0.5 E200.7 07/21/09 13:281 cp
10 A4500-S04 E 07/23/0912:27 I jal
0.01 A4500-H B 07113/09 12:56 I lib
10 A2540C 07/14/0916:231 emm
5.0 E200.B 07/10/0915:20 I Is
0.5 E200.B 07115/0901 :26 I Is
0.50 E200.B 07/10/09 15:20 I Is
25 E200.8 07/10/09 15:20 I Is
10 E200.8 07/10/0915:20 I ts
10 E200.8 07/10/09 15:20 I ts
30 E200.7 07/20/0915:30 I cp
1.0 E200.8 07/10/09 15:20 I Is
10 E200.B 07/10/0915:20 I Is
0.50 E200.B 07/10/0915:20 I ts
10 E200.B 07/10/09 15:20 I Is
20 E200.8 07/10/09 15:20 I ts
5.0 E200.8 07/10/0915:20 I ts
10 E200.B 07/10/0915:20 I Is
0.50 E200.8 07/10/0915:20 I Is
100 E200.8 07/10/0915:20 I Is
0.30 E200.B 0711 0/09 15:20 I Is
15 E200.8 07/10/09 15:20 I Is
10 E200.8 07/10/0915:20 I Is
E900.1 07/22/0917:17 I cgr
E900.1 07/22/0917:17 I cgr
E900.1 07/22/0917:17 I cgr
MCl -Maximum contaminant level.
NO -Not detected at the reporting limit.
o -RL increased due to sample matrix inlerference.
ENERGY LABORATORIES, INC. ·2393 Salt Creek Highway (82601) • P.D. Box 3258 • Casper, WY 82602
Toll Free 888.235.0515 • 307.235.0515 • Fax [phone] • [e-mail] • www.energy/ab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Denison Mines (USA) Corp
Annual Spring Sampling
C09070370-001
Client Sample 10: Ruin Spring
Analyses
DATA QUALITY
NC Balance (± 5)
Anions
Cations
Solids, Total Dissolved Calculated
TOS Balance (0.80 -1.20)
VOLATILE ORGANIC COMPOUNDS
Acetone
Benzene
Carbon tetrachloride
Chloroform
Chloromethane
Methyl ethyl ketone
Methylene chloride
Naphthalene
Toluene
Xylenes, Total
Surr: Oibromofluoromethane
Surr: p-Bromofluorobenzene
Surr: Toluene-d8
Surr: 1,2-0ichlorobenzene-d4
Report
Definitions:
RL -Analyte reporting limit.
QCL • Quality control limit.
Result
-3.00
15.7
14.8
985
1.03
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
126
108
104
109
Units
%
meq/L
meq/L
mg/L
ug/L
uglL
ug/L
ug/L
ug/L
ug/L
Ug/L
ug/L
ugIL
ug/L
%REC
%REC
%REC
%REC
Qualifiers RL
20
1.0
1.0
1.0
1.0
20
1.0
1.0
1.0
1.0
70-130
80-120
80-120
80-120
Report Date: 08/06/09
Collection Date: 07/07/0914:00
DateReceived: 07/09/09
Matrix: Aqueous
MCU
QCL Method Analysis Date I By
Calculation 07/24/0910:29/1ab
Calculation 07/24/0910:29/1ab
Calculation 07/24/0910:29/1ab
Calculation 07/24/0910:29/1ab
Calculation 07/24/0910:29/1ab
SW8260B 07/16/0923:451 wen
SW8260B 07/16/0923:451 wen
SW8260B 07/16/09 23:45 1 wen
SW8260B 07/16/0923:451 wen
SW8260B 07116/09 23:45 I wen
SW8260B 07/16/0923:45 1 wen
SW8260B 07/16/09 23:45 I wen
SW8260B 07/16/0923:451 wen
SW8260B 07/16/0923:451 wen
SW8260B 07/16/0923:451 wen
SW8260B 07/16/0923:451 wen
SW8260B 07/16/0923:451 wen
SW8260B 07/16109 23:45 I wen
SW8260B 07/16/0923:45 {wen
MCL • Maximum contaminant level.
NO -Not detected at the reporting limit.
l?~..., .. --ENERGYLABORATORIES, INC. • 2393 Salt Creek Highway (82601j ·Ro. Box3258 • Casper, WY82602 _~~~~~~~ Toll Free 888.235.0515 • 307.235.0515 • Fax [phone] • [e-mail]·www.energylab.com
LABOR/I TOl?!rS
LABORATORY ANALYTICAL REPORT
Client: Denison Mines (USA) Corp Report Date: 08/06/09
Project: Annual Spring Sampling Collection Date: 07/07/09 11 :25
Lab 10: C09070370-002 DateReceived: 07/09/09
Client Sample 10: Cottonwood Spring Matrix: Aqueous
_.M __ ••••• _ ••••• _. MO" _."~ •• " ••• __ "M~ •••• -~ .. -_.--~ . -.
MCW
Analyses Result Units Qualifier RL QCL Method Analysis Date I By
MAJOR IONS
Carbonate as C03 ND mg/L A2320 B 07113/09 12:33 Iljl
Bicarbonate as HC03 316 mg/L A2320 B 07/13/0912:33/Ijl
Calcium 90.3 mg/L 0.5 E200.7 07/2010915:34/ cp
Chloride 124 mg/L 1 A4500-CI B 07/21/0909:54/ ja
Fluoride 0.4 mg/L 0.1 A4500-F C 07/10/0912:11 /ljl
Magnesium 25.0 mg/L 0.5 E200.7 07/20/09 15:34/ cp
Nitrogen, Ammonia as N ND mg/L 0.05 A4500-NH3G 07/21/0910:03/ jal
Nitrogen, Nitrale+Nitrite as N 0.1 mg/L 0.1 E353.2 07/22/09 12:51 I jal
Potassium 5.7 mg/L 0.5 E200.7 07/20/09 15:34 / cp
Sodium 205 mg/L 0.5 E200.7 07/21/0913:361 cp
Sulfate 383 mg/L D 10 A4500-S04 E 07/23/09 12:30 I jal
PHYSICAL PROPERTIES
pH 7.73 S.u. 0.Q1 A4500-H B 07/13/09 12:59 I tlb
Solids, Total Dissolved TDS @ 180 C 1010 mg/L 10 A2540C 07/14/0916:231 emm
METALS -DISSOLVED
Arsenic ND ug/L 5.0 E200.8 07/10/0915:27 Its
Beryllium ND ug/L 0.5 E200.8 07/17/0900:02/ sml
Cadmium ND ug/L 0.50 E200.8 07/10/09 15:27 I ts
Chromium ND ug/L 25 E200.8 07/10/0915:27/Is
Coball ND ug/L 10 E200.8 07/10/0915:27/ts
Copper ND ug/L 10 E200.8 07/10/0915:27/1s
Iron ND ug/L 30 E200.7 07/20109 15:34 I cp
Lead ND ug/L 1.0 E200.8 07/10/09 15:27 I Is
Manganese ND ug/L 10 E200.8 07/10109 15:27 I Is
Mercury ND ug/L 0.50 E200.8 07/10/09 15:27 I ts
Molybdenum ND ug/L 10 E200.8 07/10/09 15:27 Its
Nickel ND ug/L 20 E200.8 07/10109 15:27 I ts
Selenium ND ug/L 5.0 E200.8 07/10/0915:27/ts
Silver ND ug/L 10 E200.8 07/10/0915:27 I ts
Thallium ND ug/L 0.50 E200.8 07/10/0915;27/Is
Tin ND ug/L 100 E200.8 07/10/0915;27 I ts
Uranium 8.42 ug/L 0.30 E200.8 07/10/0915:27 I ts
Vanadium ND ug/L 15 E200.8 07/1010915:27/ts
Zinc ND ug/L 10 E200.B 07/10109 15:271 Is
RADIONUCLIDES -DISSOLVED
Gross Alpha minus Rn & U 0.3 pCVL U E900.1 07/22/0917:17 I cgr
Gross Alpha minus Rn & U Precision (±) 0.5 pCVL E900.1 07/22/0917:17/ cgr
Gross Alpha minus Rn & U MDC 0.8 pCVL E900.1 07/22109 17:17 I cgr
----.----.-~ .. __ . __ ._----_.
Report RL -Analyte reporting limit. MCL -Maximum contaminant level.
Definitions: QCL -Quality control limit. ND -Not detected at the reporting limit.
MDC -Minimum detectable concenlration D -RL increased due to sample matrix interference.
U -Not detected at minimum detectable concentration
ENERGYLABORATORIES, INC. • 2393 Salt CreekHighway(82601) .p.o. Box3258 • Casper, WY82602
lOll Free 888.235.0515 • 307.235.0515 • Fax [phone] • [e-mail]. www.energylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Denison Mines (USA) Corp
Annual Spring Sampling
C09070370-002
Client Sample 10: Cottonwood Spring
Analyses
DATA QUALITY
AlC Balance (± 5)
Anions
Cations
Solids, Total Dissolved Calculated
TOS Balance (0.80 -1.20)
VOLA TILE ORGANIC COMPOUNDS
Acetone
Benzene
Carbon tetrachloride
Chloroform
Chloromethane
Methyl ethyl ketone
Methylene chloride
Naphthalene
Toluene
Xylenes, Total
Surr: Oibromofluoromethane
Surr: p-Bromofluorobenzene
Surr. Toluene-d8
Surr: 1 ,2-0ichlorobenzene-d4
Report
Definitions:
RL • Analyte reporting limit.
QCL -Quality control limit.
Result
-3.26
16.7
15.6
1020
0.990
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
120
110
102
110
Units
%
meq/L
meq/L
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
%REC
%REC
%REC
%REC
Qualifiers RL
20
1.0
1.0
1.0
1.0
20
1.0
1.0
1.0
1.0
70-130
80-120
80-120
80-120
Report Date: 08/06/09
Collection Date: 07/07109 11 :25
DateReceived: 07109/09
Matrix: Aqueous
MCU
QCl Method Analysis Date I By
Calculation 07/24/0910:29/1ab
Calculation 07/24/0910:29/1ab
Calculation 07/24/0910:29/1ab
Calculation 07/24/0910:29/1ab
Calculation 07/24/0910:29/1ab
SW8260B 07/17/0900:221 wen
SW8260B 07/17/0900:221 wen
SW8260B 07/17/0900:221 wen
SW8260B 07117/0900:221 wen
SW8260B 07/17/0900:221 wen
SW8260B 07/17/0900:221 wen
SW8260B 07/17/0900:221 wen
SW8260B 07/17/09 00:221 wen
SW8260B 07/17/09 00:22 1 wen
SW8260B 07/17/0900:221 wen
SW8260B 07117/09 00:22 1 wen
SW8260B 07/17/09 00:22 1 wen
SW8260B 07117/0900:221 wen
SW8260B 07/17/0900:221 wen
MCL • Maximum contaminant level.
NO • Not detected at the reporting limit.
I ~ ENERGY LABORATORIES, INC. • 2393 Salt Creek Highway (82601) • P.O Box 3258 • Casper, WY 82602 .'ilgB{'FI Toll Free 888.235.0515 • 307.235.0515 • Fax [phone] • [e-mail] • www.energylab.com
LABOl?A701?1l 5
LABORATORY ANALYTICAL REPORT
Client: Denison Mines (USA) Corp Report Date: 08/06/09
Project: Annual Spring Sampling Col/ection Date: 07107109 09:30
Lab 10: C09070370-003 DateReceived: 07109/09
Client Sample 10: Entrance Spring Matrix: Aqueous
---"'-'.'~-------'-'-----_ ... '. ---' ----_._-------_._---..
MCU
Analyses Result Units Qualifier RL QCL Method Analysis Date 1 By
MAJOR IONS
Carbonate as C03 ND mg/L A2320 B 07/13/0912;4111jl
Bicarbonate as HC03 292 mglL A2320 B 07/13/09 12:41 Iljl
Calcium 90.8 mglL 0.5 E200.7 07/20/0915:381 cp
Chloride 60 mg/L 1 A4500-CI B 07/21/0909;561 js
Fluoride 0.7 mglL 0.1 A4500-F C 07/10/0912:14/1jl
Magnesium 26.6 mg/L 0.5 E200.7 07/20/0915:381 cp
Nitrogen, Ammonia as N 0.28 mg/L 0.05 A4500-NH3 G 07/21/0910:051 jal
Nitrogen, Nitrate+Nitrite as N 1.4 mg/L 0.1 E353.2 07/22/09 12; 53 I jal
Potassium 2.4 mg/L 0.5 E200.7 07/20/09 15;381 cp
Sodium 61.4 mg/L 0.5 E200.7 07/20/0915;381 cp
Sulfate 178 mg/L 0 6 A4500-S04 E 07/23/09 12;32 I jal
PHYSICAL PROPERTIES
pH 7.85 S.u. 0.01 A4500-H B 07/13/09 13;01 I lib
Solids, Total Dissolved TOS @ 180 C 605 mg/L 10 A2540C 07/14/0916;241 emm
METALS -DISSOLVED
Arsenic NO ug/L 5.0 E200.8 07/10/09 17;091 ts
Beryllium NO ug/L 0.50 E200.8 07/10/09 17;09 I ts
Cadmium NO ug/L 0.50 E200.8 07/10/0917;09/Is
Chromium NO ug/L 25 E200.8 07/10/09 17;091 ts
Cobalt ND ug/L 10 E200.8 07/10/09 17;091 ts
Copper NO ug/L 10 E200.8 07/10/0917;091 ts
Iron NO ug/L 30 E200.7 07/20/09 15:38 I cp
Lead NO ug/L 1.0 E200.8 07/10/09 17:091 Is
Manganese 54 ug/L 10 E200.8 07/10/0917:091 Is
Mercury NO ug/L 0.50 E200.8 07/10/09 17:091 Is
Molybdenum NO ug/L 10 E200.8 07/10/0917:09/ts
Nickel NO ug/L 20 E200.8 07/10/09 17;091 ts
Selenium 12.1 ug/L 5.0 E200.8 07/10/0917:091 ts
Silver NO ug/L 10 E200.8 07/10/0917;091 Is
Thallium NO ug/L 0.50 E200.8 07/10/09 17:091 ts
Tin NO ug/L 100 E200.8 07/10/0917;091 Is
Uranium 15.2 ug/L 0.30 E200.8 07/10/09 17:091 Is
Vanadium NO ug/L 15 E200.8 07/10/0917:091 ts
Zinc ND ug/L 10 E200.B 07/10/0917;091 ts
RADIONUCLIDES -DISSOLVED
Gross Alpha minus Rn & U 0.9 pCilL E900.1 07/2210917:171 cgr
Gross Alpha minus Rn & U Precision (±) 0.6 pCilL E900.1 07/22/09 17:17 I cgr
Gross Alpha minus Rn & U MOC 0.8 pCilL E900.1 07/22/0917;171 cgr
..... _-_ .... _------_ ..
Report RL -Analyte reporting limit. MeL -Maximum conlaminanl level.
Definitions: QCL -Quality conlrollimlt. NO -Not detected at the reporting limit.
MOC -Minimum detectable concentration o -RL increased due to sample matrix interference.
ENERGYLABORATORIE$.INC. • 2393 Salt Creek Highway (82601) .P.o. Box3258 • Casper, WY82602
7011 Free 888.235.0515 • 307.235.0515 • Fax [phone] • [e-mail]. www.energylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Denison Mines (USA) Corp
Annual Spring Sampling
C09070370-003
Client Sample 10: Entrance Spring
Analyses
DATA QUALITY
NC Balance (± 5)
Anions
Cations
Solids, Total Dissolved Calculated
TDS Balance (0.80 -1.20)
VOLATILE ORGANIC COMPOUNDS
Acetone
Benzene
Carbon tetrachloride
Chloroform
Chloromethane
Methyl ethyl ketone
Methylene chloride
Naphthalene
Toluene
Xylenes, Total
Surr: Dibromofluoromethane
Surr: p-Bromofluorobenzene
Surr: Toluene-d8
Surr: 1,2-0ichlorobenzene-d4
Report
Definitions:
Rl • Analyte reporting limit.
QCl -Quality control limit.
Result
-4.29
10.3
9.47
594
1.02
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
110
107
106
108
Units
%
meq/l
meq/L
mg/l
uglL
uglL
ugIL
uglL
ug/L
ugiL
ug/l
ug/l
uglL
uglL
%REC
%REC
%REC
%REC
Qualifiers Rl
20
1.0
1.0
1.0
1.0
20
1.0
1.0
1.0
1.0
70-130
80-120
80-120
80-120
Report Date: 08/06109
Collection Date: 0710710909:30
DateReceived: 07/09/09
Matrix: Aqueous
MCU
QCl Method Analysis Date 1 By
Calculation 07/24/0910:29/1ab
Calculation 07/24/0910:29/1ab
Calculation 07/24/0910:2911ab
Calculation 07/24/0910:29/1ab
Calculation 07/24/0910:29/1ab
SW8260B 07/15/09 17:46 1 wen
SW8260B 07/15/0917:461 wen
SW8260B 07/15/09 17:46 1 wen
SW8260B 07/15/0917:461 wen
SW8260B 07/15/0917:461 wen
SW8260B 07/15/0917:461 wen
SW8260B 07/15/09 17:46 1 wen
SW8260B 07/15/09 17:46 1 wen
SW8260B 07115/0917:461 wen
SW8260B 07/15/09 17:461 wen
SW8260B 07/15/0917:46/wen
SW8260B 07/15/09 17:461 wen
SW8260B 07115/09 17:46 1 wen
SW8260B 07/15/0917:461 wen
MCl • Maximum contaminant level.
NO • Not detected at the reporting limit.
;:; .J';.~ ENERGYLABORATORIES, INC •• 2393 SahCreek Highway (82601j -P.O. Box3258 -Casper, WY82602 ,"'~-«\"7 7011 Free 888.235.0515 -307.235.0515 • Fax [phone] • casper@energy/ab.com -www.energy/ab.com
lABORATONllS
LABORATORY ANALYTICAL REPORT
Client:
Project:
LablD:
Denison Mines (USA) Corp
Annual Spring Sampling
C09070370-004
Client Sample 10: Back Spring
Analyses Result
MAJOR IONS
Carbonate as C03 NO
Bicarbonate as HC03 232
Calcium 149
Chloride 27
Fluoride 0.5
Magnesium 31.6
Nitrogen, Ammonia as N NO
Nitrogen, Nitrate+Nitrite as N 1.4
Potassium 3.2
Sodium 103
Sulfate 520
PHYSICAL PROPERTIES
pH 7.70
Solids, Total Oissolved TDS @ 180 C 996
METALS -DISSOLVED
Arsenic NO
Beryllium NO
Cadmium NO
Chromium NO
Cobalt NO
Copper NO
Iron ND
Lead ND
Manganese ND
Mercury ND
Molybdenum 17
Nickel ND
Selenium 12.3
Silver ND
Thallium NO
Tin NO
Uranium 9.00
Vanadium ND
Zinc NO
RADIONUCLIDES -DISSOLVED
Gross Alpha minus Rn & U -0.02
Gross Alpha minus Rn & U Precision (±) 0.5
Gross Alpha minus Rn & U MOC 0.8
Report RL -Analyte reporting limit.
Definitions: QCL -Quality control limit.
Units
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
s.u.
mg/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
pCilL
pCilL
pC ilL
MOe -Minimum detectable concentration
U -Not detected at minimum detectable concentration
Report Date: 08/06109
Collection Date: 0710710914:00
DateReceived: 07109109
Matrix: Aqueous
MCW
Qualifier RL QCL Method Analysis Date 1 By
A2320 B 07/13/09 12:48 1 Ijl
A2320 B 07/13/0912:48/1jl
0.5 E200.7 07/20/09 15:42/ cp
1 A4500-CI B 08/03/09 15: 18 / jal
0.1 A4500-F C 07/10/0912:16/1jl
0.5 E200.7 07/20/09 15:42 I cp
0.05 A4500-NH3 G 07/14/0914:37/ jal
0.1 E353.2 07/22/0912:561 jal
0.5 E200.7 07/20/0915:421 cp
0.5 E200.7 07/21/09 13:45/ cp
0 10 A4500-S04 E 07/30/09 15:09 I jal
0.01 A4500-H B 07/13/0914:231 lib
10 A2540C 07/14/0916:241 emm
5.0 E200.8 07/10/0917:161 ts
0.50 E200.8 07/10/0917:161 Is
0.50 E200.8 07/10/0917:16115
25 E200.8 07/10/0917:161 ts
10 E200.8 07/10/0917:16115
10 E200.8 07/10/0917:161ts
30 E200.7 07/20/09 15:42 1 cp
1.0 E200.8 07/10/0917:16/t5
10 E200.8 07/10/0917:161 ts
0.50 E200.8 07/10/0917:16/ ts
10 E200.8 07/10/0917:16115
20 E200.8 07/10/0917:1611s
5.0 E200.8 07/10/09 17:16 Its
10 E200.8 07110/0917:161 ts
0.50 E200.8 07/10/0917:161ts
100 E200.8 07/10/0917:161ts
0.30 E200.8 07/10/0917:16I1s
15 E200.8 07/10/0917:1611s
10 E200.8 07/10/0917:161 Is
U E900.1 07/22/0922:40 I cgr
E900.1 07/22/09 22:40 I cgr
E900.1 07/22/0922:401 cgr
MCL -Maximum contaminant level.
NO -Not detected at the reporting limit.
D -RL increased due to sample matrix interference.
ENERGYLABORATORIE5.INC •• 2393 Salt Creek Highway (82601j .P.O 8ox3258 • Casper, WY82602
lOll Free 888.235.0515 • 307.235.0515 • Fax [phone] • [e-mail] • www.energylab.com
LAS ORA TORY ANALYTICAL REPORT
Client:
Project:
Lab 10:
Denison Mines (USA) Corp
Annual Spring Sampling
C09070370-004
Client Sample 10: Back Spring
Analyses
OAT A QUALITY
AlC Balance (:I: 5)
Anions
Cations
Solids, Total Dissolved Calculated
TDS Balance (0.80 -1.20)
VOLATILE ORGANIC COMPOUNDS
Acetone
Benzene
Carbon tetrachloride
Chloroform
Chloromethane
Methyl ethyl ketone
Methylene chloride
Naphthalene
Toluene
Xylenes, Total
Surr: Oibromofluoromethane
Surr: p-Bromofluorobenzene
Surr: Toluene-d8
Surr: 1,2-0ichlorobenzene-d4
Report
Definitions:
Rl -Analyte reporting limit.
QCl -Quality control limit.
Result
-2.95
15.5
14.6
973
1.02
ND
ND
ND
NO
ND
NO
NO
NO
ND
NO
114
108
103
108
Units
%
meq/l
meq/l
mg/L
ug/l
ug/L
ug/L
ug/L
Ug/L
ug/l
ug/l
ug/l
ug/l
ug/L
%REC
%REC
%REC
%REC
Qualifiers RL
20
1.0
1.0
1.0
1.0
20
1.0
1.0
1.0
1.0
70-130
80-120
80-120
80-120
Report Date: 08/06/09
Collection Date: 07/07/0914:00
DateReceived: 07/09/09
Matrix: Aqueous
MCU
QCL Method Analysis Date I By
Calculation 08/04/09 12:20 1 kbh
Calculation 08104109 12:20 1 kbh
Calculation 08/04/09 12:20 1 kbh
Calculation 08/04109 12:20 1 kbh
Calculation 08/04/0912:201 kbh
SW8260B 07/15/09 18:23 1 wen
SW8260B 07/15/0918:23/wen
SW8260B 07/15/0918:231 wen
SW8260B 07/15/0918:231 wen
SW8260B 07/15/0918:231 wen
SW8260B 07/15/0918:23/wen
SW8260B 07/15/0918:23/wen
SW8260B 07/15/09 18:23 1 wen
SW8260B 07/15/0918:23/wen
SW8260B 07/15/0918:23/wen
SW8260B 07/15/0918:23/wen
SW8260B 07/15/09 18:23 I wen
SW8260B 07/15/0918:231 wen
SW8260B 07/15/0918:23/wen
MCl -Maximum contaminant level.
NO -Not detected at the reporting limit.
ENERGY LABORATORIES, INC. ·2393 SaH Creek Highway (82601) • P.D. Box 3258 • Casper, WY 82602
7011 Free 888.235.0515 • 301.235.0515 • Fax [phone] • [e-mail]. www.energylab.com
LABORATORY ANALYTICAL REPORT
Client:
Project:
LablD:
Denison Mines (USA) Corp
Annual Spring Sampling
C09070370-005
Client Sample 10: Trip Blank
Analyses
VOLATILE ORGANIC COMPOUNDS
Acetone
Benzene
Carbon tetrachloride
Chloroform
Chloromethane
Methyl ethyl ketone
Methylene chloride
Naphthalene
Toluene
Xylenes, Total
Surr: Oibromofluoromethane
Surr: p-Bromofluorobenzene
Surr: Toluene-d8
Surr: 1.2-0ichlorobenzene-d4
Report
Definitions:
RL -Analyte reporting limit.
QCL -Quality control limit.
Result
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
109
106
103
107
Units
ug/L
ugIL
ug/L
ug/L
ugIL
ug/L
ug/L
ug/L
ug/L
ug/L
%REC
%REC
%REC
%REC
Qualifiers RL
20
1.0
1.0
1.0
1.0
20
1.0
1.0
1.0
1.0
70-130
80-120
80-120
80-120
Report Date: 08/06/09
Collection Date: 07/07/09
DateReceived: 07/09/09
Matrix: Aqueous
MCU
QCL Method Analysis Date I By
SW8260B 07/15/09 19:01 1 wen
SW8260B 07115/0919:01 1 wen
SW8260B 07/15/09 19:01 1 wen
SW8260B 07115/0919:01 1 wen
SW8260B 07/15/0919:011 wen
SW8260B 07115/0919:011 wen
SW8260B 07/15/09 19:01 1 wen
SW8260B 07/15/0919:01 1 wen
SW8260B 07/15/0919:01/wen
SW8260B 07115/0919:01 1 wen
SW8260B 07/15/0919:01/wen
SW8260B 07115/09 19:01 1 wen
SW8260B 07115/0919:011 wen
SW8260B 07115/0919:01 1 wen
MCl -Maximum contaminant level.
NO -Not detected at the reporting limit.
ENERGYLABORATORIE$, INC. • 2393 Salt Creek Highway (82601) .P.o. Box3258 • Casper, WY82602
lOU Free 888.235.0515 • 307.235.0515 • Fax [phone] • [e-mail]. www.energylab.com
ANALYTICAL SUMMARY REPORT
August 06, 2009
Denison Mines (USA) Corp
6425 S Hwy 191
Blanding, UT 84511
Workorder No.: C09070370 Quote ID: C1640 -POC Wells I Monthly Groundwater Sampling
Project Name: Annual Spring Sampling
Energy Laboratories, Inc. received the following 5 samples for Denison Mines (USA) Corp on 7/9/2009 for analysis.
Sample 10 Client Sample 10 Collect Date Receive Date Matrix Test
C09070370-001 Ruin Spring 07107/09 14:00 07/09109 Aqueous Metals by ICPIICPMS, Dissolved
Alkalinity
QA Calculations
Chloride
Fluoride
Nitrogen, Ammonia
Nitrogen, Nitrate + Nitrite
pH
Gross Alpha minus Rn222 and Uranium
Solids, Total Dissolved
Sulfate
SW8260B VOCs, Standard List
C09070370-002 Cottonwood Spring 07/07/09 11 :25 07/09/09 Aqueous Same As Above
C09070370-003 Entrance Spring 07/07/0909:3007/09/09 Aqueous Same As Above
C09070370-004 Back Spring 07/07/09 14:00 07/09/09 Aqueous Same As Above
C09070370-005 Trip Blank 07/07/0900:00 07/09/09 Aqueous SW8260B VOCs, Standard List
As appropriate, any exceptions or problems 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: ~11~ £J: U)li~,brT Step anie D. Waldrop
Reporting Supervisor
ENERGYLABORATORIE5.INC .• 2393 Salf Creek Highway (82601) • P.O. Box3258 • Casper, WY82602
Toll Free 888.235.0515 • 307.235.0515 • Fax [phone] • [e-mail]. www.energylab.com
QAlQC Summary Report
Client: Denison Mines (USA) Corp Report Date: 08/06/09
Project: Annual Spring Sampling Work Order: C09070370
Analyte Count Result Units RL %REC Low Limit High Limit RPO RPOLlmlt Qual
Method: A2320 B Batch: R120777
Sample 10: MBLK ;t Method Blank Run: MANTECH_090713A 07/13/0911:39
Alkalinity, Total as CaC03 4 mg/L 0.2
Carbonate as C03 NO mg/L
Bicarbonate as HC03 5 mg/L
Sample 10: LCS Laboratory Control Sample Run: MANTECH_090713A 07/13/09 12:01
Alkalinity, Total as CaC03 51.4 mg/L 5.0 94 90 110
Sample 10: C09070372.()01AMS Sample Matrix Spike Run: MANTECH_090713A 07/13/0913:01
Alkalinity, Total as CaC03 356 mg/L 5.0 95 80 120
Sample 10: C09070372-001AMSO Sample Matrix Spike Duplicate Run: MANTECH_090713A 07/13/0913:08
Alkalinity, Total as CaC03 358 mg/L 5.0 97 80 120 0.6 20
Method: A2540 C Batch: R120898
Sample 10: MBLK1_ Method Blank Run: BAL-1_090714E 07/14/0916:22
Solids, Total Dissolved TDS@ 180 C NO mg/L 6
Sample 10: LCS1_ Laboratory Control Sample Run: BAL-1_090714E 07114/09 16:22
Solids, Total Dissolved TDS @ 180 C 994 mg/L 10 99 90 110
Sample 10: C09070417"()05AMS Sample Matrix Spike Run: BAL-1_090714E 07/14/0916:25
Solids, Total Dissolved TDS @ 180 C 10200 mg/L 10 104 90 110
Sample 10: C09070417-005AMSO Sample Matrix Spike Duplicate Run: BAL-1_090714E 07/14/09 16:25
Solids, Total Dissolved TDS @ 180 C 10200 mg/L 10 106 90 110 0.3 10
Method: A4500·CI B Batch: 090721-CL-TTR-W
Sample 10: MBLK9-090721 Method Blank Run: TITRATION_090721A 07/21/0909:20
Chloride ND mg/L 0.4
Sample 10: C09070417·002BMS Sample Matrix Spike Run: TITRATION_090721A 07/21/0910:08
Chloride 463 mg/L 1.0 104 90 110
Sample 10: C09070417'()02BMS Sample Matrix Spike Duplicate Run: TITRATION_090721A 07/21/0910:10
Chloride 448 mg/L 1.0 100 90 110 3.1 10
Sample 10: LCS35'()90721 Laboratory Control Sample Run: TITRATION_090721A 07/21/0910:46
Chloride 3500 mg/L 1.0 99 90 110
Qualifiers:
RL -Analyte reporting limit. NO -Not detected at the reporting limit.
MDC -Minimum detectable concentration
ENERGYLABORATORIE5.INC •• 2393 Salt Creek Highway (82601) .p.o. Box3258 • Casper, WY82602 Iggl!{({f37 7011 Free 888.235.0515 • 307.235.0515 • Fax [phone] • casper@energy/ab.com • www.energy/ab.com '6'r,uI,,·tN/i'
QAlQC Summary Report
Client: Denison Mines (USA) Corp
Project: Annual Spring Sampling
Report Date: 08/06/09
Work Order: C09070370
Analyte Count Result Units RL %REC Low Limit High Limit RPO RPOUmlt Qual
Method: A4500·CI B
Sample 10: MBLK9-090803
Chloride
Sample 10: C09070370-004AMS
Chloride
Sample 10: C09070370-004AMSO
Chloride
Sample 10: LCS3S-090803
Chloride
Method: A4500·F C
Sample 10: MBLK·1
Fluoride
Sample 10: LCS·1
Fluoride
Sample 10: C09070370-001AMS
Fluoride
Sample ID: C09070370-001AMSD
Fluoride
Method: A4500-H B
Sample ID: ICV1_090713_1
pH
Method: A4500·H B
Sample ID: C09070370-003ADUP
pH
Method: A4500·H B
Sample ID: ICV1_090713_2
pH
Method: A4500·H B
Sample 10: C09070417·004BDUP
pH
Qualifiers:
Method Blank
NO mg/L 0.4
Sample Matrix Spike
198 mg/L 1.0
Sample Matrix Spike Duplicate
200 mg/L 1.0
Laboratory Control Sample
3540 mg/L 1.0
Method Blank
NO mg/L 0.05
Laboratory Control Sample
1.00 mg/L 0.10
Sample Matrix Spike
1.53 mg/L 0.10
Sample Matrix Spike Duplicate
1.56 mg/L 0.10
Initial Calibration Verification Standard
6.91 S.u. 0.010
Sample Duplicate
7.87 S.u. 0.010
Initial Calibration Verification Standard
6.88 S.u. 0.010
Sample Duplicate
6.68 s.u. 0.010
97
98
100
100
100
103
101
100
Batch: 090803-CL-TIR·W
Run: TITRATION_090803C 08/03/0915:07
Run: TITRATION_090803C
90 110
Run: TITRATION_090803C
90 110
Run: TITRATION_090803C
90 110
Run: MANTECH_090710A
Run: MANTECH_090710A
90 110
Run: MANTECH_090710A
80 120
Run: MANTECH_090710A
80 120
0.9
1.9
08/03/09 15:40
08/03/09 15:41
10
08/03/09 16:34
Batch: R120710
07/10/0910:47
0711 0/09 10:50
07/10/09 12:06
07/10/0912:09
10
Analytical Run: ORION555A·2_090713A
07/13/09 11 :25
98 102
Batch: 090713_1_PH-W_555A-2
Run: ORION555A-2_090713A 07/13/0913:03
98
0.3 10
Analytical Run: ORION555A·2_090713B
07/13/0914:17
102
Batch: 090713_2_PH-W_555A-2
Run: ORION555A·2_090713B 07/13/0914:46
0.8 10
RL • Analyte reporting limit. NO -Not detected at the reporting limit.
MDC -Minimum detectable concentration
ENERGYLABORATORIES, INC •• 2898 Salt Creek Highway (82801) .p.o. Box8258 • Casper, WY82802
lOll Free 888.235.0515 • 807.285.0515 • Fax [phone] • [e-mail] • www.energy/ab.com
QAlQC Summary Report
Client: Denison Mines (USA) Corp Report Date: 08/06/09
Project: Annual Spring Sampling Work Order: C09070370
Analyte Count Result Units RL %REC Low Limit High Limit RPO RPOLimit Qual
Method: A4500·NH3 G Batch: R120841
Sample 10: MBLK·1 Method Blank Run: TECHNICON_090714A 07/14/0912:44
Nitrogen, Ammonia as N NO mg/L 0.02
Sample 10: LCS·2 Laboratory Control Sample Run: TECHNICON_090714A 07114/09 12:46
Nitrogen, Ammonia as N 21.3 mg/L 0.20 106 80 120
Sample 10: C09070168·0030MS Sample Matrix Spike Run: TECHNICON_090714A 07/14/09 13:50
Nitrogen, Ammonia as N 2.62 mg/L 0.050 122 80 120 S
Sample 10: C0907016S-D030MSO Sample Matrix Spike Duplicate Run: TECHNICON_090714A 07114/09 13:52
Nitrogen, Ammonia as N 2.58 mg/L 0.050 120 80 120 1.5 20
Method: A4500·NH3 G Batch: R121158
Sample 10: MBLK·1 Method Blank Run: TECHNICON_090721A 07/21/0909:59
Nitrogen, Ammonia as N 0.03 rnglL 0.02
Sample 10: LCS·2 Laboratory Control Sample Run: TECHNICON_090721A 07/21/09 10:01
Nitrogen, Ammonia as N 21.3 rng/L 0.20 106 80 120
Sample 10: C09070370-D020MS Sample Matrix Spike Run: TECHNICON_090721A 07/21/0910:13
Nitrogen, Ammonia as N 2.19 mg/L 0.050 107 80 120
Sample 10: C09070370-D020MSO Sample Matrix Spike Duplicate Run: TECHNICON_090721A 07121/0910:15
Nitrogen, Ammonia as N 2.16 rng/L 0.050 106 80 120 1.4 20
Method: A4600-S04E Batch: 090723_2_S04-TURB-W
Sample 10: LCS·1_090723 Laboratory Control Sample Run: TURB·2_090723A 07/23/0912:10
Sulfate 4970 rnglL 59 103 90 110
Sample 10: MBLK·1_090723 Method Blank Run: TURB-2_090723A 07/23/0912:12
Sulfate NO rng/L 0.6
Sample 10: C09070349-D01AMS Sample Matrix Spike Run: TURB-2_090723A 07123/0912:25
Sulfate 22.7 mg/L 1.0 102 90 110
Sample 10: C09070349·001AMSO Sample Matrix Spike Duplicate Run: TURB-2_090723A 07/23/0912:26
Sulfate 23.1 rng/L 1.0 104 90 110 1.8 10
Qualifiers:
RL -Analyte reporting limit. NO • Not detected at the reporting limit.
MDC -Minimum detectable concentration S -Spike recovery outside of advisory limits.
ENERGYLABORATORIE5, INC •• 2393 Sail Creek Highway (82601j .P.O Box3258 • Casper, WY82602
701/ Free 888.235.0515 • 307.235.0515 • Fax [phone] • [e-mail] • www.energylab.com
QA/QC Summary Report
Client: Denison Mines (USA) Corp Report Date: 08/06/09
Project: Annual Spring Sampling Work Order: C09070370
Analyte Count Result Units Rl %REC low Limit High limit RPO RPOLimlt Qual
Method: A4500-S04 E Batch: 090730_1_S04-TURB-W
Sample 10: LCS-1_090730 laboratory Control Sample Run: TURB-2_090730A 07/30/0915:01
Sulfate 4950 mg/l 59 103 90 110
Sample 10: MBlK-1_090730 Method Blank Run: TURB-2_090730A 07/30/0915:02
Sulfate NO mg/l 0.6
Sample 10: C09070697-005AMS Sample Matrix Spike Run: TURB-2_090730A 07/30/0915:21
Sulfate 116 mg/l 2.0 106 90 110
Sample 10: C09070697-005AMSO Sample Matrix Spike Duplicate Run: TURB-2_090730A 07130/0915:22
Sulfate 116 mg/l 2.0 106 90 110 0 10
Method: E200.7 Batch: R121104
Sample 10: MB-090720A § Method Blank Run: ICP2-C_090720A 07120/0913:37
Calcium NO mg/l 0.2
Iron NO mg/l 0.005
Magnesium NO mg/l 0.09
Potassium NO mg/l 0.1
Sodium NO mg/l 0.2
Sample 10: LFB-090720A § laboratory Fortified Blank Run: ICP2-C_090720A 07120/0913:41
Calcium 52.4 mg/l 0.50 105 85 115
Iron 0.997 mg/l 0.030 100 85 115
Magnesium 48.6 mg/l 0.50 97 85 115
Potassium 46.2 mg/l 0.50 92 85 115
Sodium 45.9 mg/l 0.50 92 85 115
Sample 10: C09070168-001BMS2 § Sample Matrix Spike Run: ICP2-C_090720A 07120/09 14:42
Calcium 147 mg/l 1.0 102 70 130
Iron 2.06 mg/l 0.030 95 70 130
Magnesium 106 mg/l 1.0 99 70 130
Potassium 106 mg/l 1.0 95 70 130
Sodium 111 mg/l 1.0 95 70 130
Sample 10: C09070168-001BMSO § Sample Matrix Spike Duplicate Run: ICP2-C_090720A 07/20/0914:46
Calcium 148 mg/l 1.0 104 70 130 20
Iron 2.05 mg/l 0.030 94 70 130 O.B 20
Magnesium 105 mg/l 1.0 98 70 130 O.B 20
Potassium 102 mg/l 1.0 92 70 130 3.1 20
Sodium 112 mg/l 1.0 96 70 130 0.9 20
Qualifiers:
RL -Analyte reporting limit. NO -Not detected at the reporting limit.
MDC -Minimum detectable concentration
ENERGYLABORATORIE5,INC. • 2393SahCreek Highway (82601j .P.O Box3258 • Casper, WY82602
7011 Free 888.235.0515 • 307.235.0515 • Fax [phone] • [e-mail] • www.energylab.com
QAlQC Summary Report
Client: Denison Mines (USA) Corp
Project: Annual Spring Sampling
Analyte Count Result Units
Method: E200.7
Sample 10: MB-090721A
Sodium
Sample 10: LFB-090721A
Sodium
Sample 10: C09061182-003BMS2
Sodium
Sample 10: C09061182-003BMSO
Sodium
Qualifiers:
RL -Analyte reportlng limit.
MDC -Minimum detectable concentration
Method Blank
NO mg/L
Laboratory Fortified Blank
45.9 mg/L
Sample Matrix: Spike
117 mg/L
Sample Matrix: Spike Duplicate
117 mg/L
Report Date: 08/06/09
Work Order: C09070370
RL %REC Low Limit High Limit RPO RPOLlmlt Qual
Batch: R121190
Run: ICP2-C_090721A 07/21/0912:12
0.2
Run: ICP2-C_090721A 07/21/0912:16
0.50 92 85 115
Run: ICP2-C_090721A 07/21/09 13:16
1.0 95 70 130
Run: ICP2-C_090721A 07/21/0913:20
1.0 95 70 130 0.2 20
NO -Not detected at the reporting limit.
",w, ENERGY LABORATORIES, INC. ·2393 SaIl Creek Highway (82601) • p.D. Box 3258 • Casper, WY 82602
7011 Free 888.235.0515 • 307.235.0515 • Fax [phone] • [e-mail] • www.energylab.com
---------------------------------------------------------------------------------QAlQC Summary Report
Client: Denison Mines (USA) Corp
Project: Annual Spring Sampling
Analyte Count
Method: E200.8
Result
Sample 10: LRB 1ft Method Blank
Arsenic NO
Beryllium NO
Cadmium NO
Chromium NO
Cobalt NO
Copper NO
Lead NO
Manganese NO
Mercury NO
Molybdenum NO
Nickel NO
Selenium NO
Silver NO
Thallium NO
Tin 0.0003
Uranium NO
Vanadium NO
Zinc 0.0009
Units
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mglL
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
Sample 10: LFB 1ft Laboratory Fortified Blank
Arsenic 0.0514 mg/L
Beryllium 0.0503 mg/L
Cadmium 0.0512 mg/L
Chromium 0.0515 mg/L
Cobalt 0.0515 mg/L
Copper 0.0507 mg/L
Lead 0.0507 mg/L
Manganese 0.0514 mg/L
Mercury 0.00515 mg/L
Molybdenum 0.0521 mg/l
Nickel 0.0510 mg/L
Selenium 0.0513 mg/L
Silver 0.0207 mg/L
Thallium 0.0505 mg/L
Tin 0.0514 mg/L
Uranium 0.0490 mg/L
Vanadium 0.0514 mglL
Zinc 0.0532 mg/L
Sample 10: C09070370-004BMS4 18 Sample Matrix Spike
Arsenic 0.0539 mglL
Beryllium 0.0443 mg/L
Cadmium 0.0491 mg/L
Chromium 0.0505 mg/L
Qualifiers:
RL • Analyte reporting limit.
MOC • Minimum detectable concentration
Report Date: 08/06/09
Work Order: C09070370
RL o/.REC Low Limit High Limit RPO RPOLlmlt Qual
Batch: R120721
Run: ICPMS2·C_090710A 07/10/0913:38
0.0003
6E-05
6E-05
BE·OS
0.00010
4E·05
2E·05
5E·05
4E-05
4E·05
9E·05
0.001
2E·05
3E-05
0.0001
BE-06
9E-05
6E·05
Run: ICPMS2·C_090710A 0711010913:45
0.0010 103 B5 115
0.0010 101 85 115
0.0010 102 85 115
0.0010 103 85 115
0.0010 103 85 115
0.0010 101 85 115
0.0010 101 85 115
0.0010 103 85 115
0.0010 103 85 115
0.0010 104 85 115
0.0010 102 85 115
0.0014 103 85 115
0.0010 103 85 115
0.0010 101 85 115
0.0010 102 85 115
0.00030 98 85 115
0.0010 103 85 115
0.0010 105 85 115
Run: ICPMS2·C_090710A 07/10/0917:22
0.0010 107 70 130
0.010 89 70 130
0.010 98 70 130
0.050 98 70 130
NO • Not detected at the reporting limit.
ENERGY LABORATORIES, INC. -2393SaItCreekHighway(82601j -p.D. 80x3258 • Casper, WY82602
TOI/ Free 888.235.0515 • 307.235.0515 -Fax [phone] [e-mail] • www.energylab.com
QAlQC Summary Report
Client: Denison Mines (USA) Corp Report Date: 08/06/09
Project: Annual Spring Sampling Work Order: C09070370
Analyte Count Result Units RL %REC Low Limit High Limit RPO RPOLImit Qual
Method: E200.8 Batch: R120721
Sample 10: C09070370-OO4BMS4 18 Sample Matrix Spike Run: ICPMS2-C_090710A 0711 0/09 17:22
Cobalt 0.0492 mgJL 0.010 96 70 130
Copper 0.0481 mgll 0.010 95 70 130
Lead 0.0507 mg/L 0.050 101 70 130
Manganese 0.0517 mg/L 0.010 99 70 130
Mercury 0.00528 mg/L 0.0010 106 70 130
Molybdenum 0.0665 mg/L 0.10 99 70 130
Nickel 0.0478 mg/L 0.050 94 70 130
Selenium 0.0653 rng/L 0.0010 106 70 130
Silver 0.0117 mg/L 0.010 59 70 130 S
Thallium 0.0496 rng/L 0.10 99 70 130
Tin 0.0390 rng/L 0.10 78 70 130
Uranium 0.0613 rng/L 0.00030 104 70 130
Vanadium 0.0516 rng/L 0.10 102 70 130
Zinc 0.0528 mg/L 0.010 102 70 130
Sample JO: C09070370·004BMSO 18 Sample Matrix Spike Duplicate Run: ICPMS2·C_090710A 07/10/0917:29
Arsenic 0.0532 mg/L 0.0010 105 70 130 1.4 20
Beryllium 0.0435 rng/L 0.010 87 70 130 1.7 20
Cadmium 0.0499 mg/L 0.010 100 70 130 1.5 20
Chromium 0.0497 mg/L 0.050 97 70 130 20
Cobalt 0.0480 mg/L 0.010 93 70 130 2.6 20
Copper 0.0485 mg/L 0.010 96 70 130 1 20
Lead 0.0511 mg/L 0.050 102 70 130 0.7 20
Manganese 0.0500 mg/L 0.010 96 70 130 3.4 20
Mercury 0.00537 rng/L 0.0010 107 70 130 1.7 20
Molybdenum 0.0682 mg/L 0.10 102 70 130 20
Nickel 0.0476 mg/L 0.050 93 70 130 20
Selenium 0.0657 rng/L 0.0010 107 70 130 0.7 20
Silver 0.0123 mg/L 0.010 §1 70 130 4.4 20 S
Thallium 0.0501 mg/L 0.10 100 70 130 20
Tin 0.0415 mg/L 0.10 83 70 130 20
Uranium 0.0615 mg/L 0.00030 105 70 130 0.5 20
Vanadium 0.0504 mg/L 0.10 100 70 130 20
Zinc 0.0527 mg/L 0.010 102 70 130 0.3 20
Qualifiers:
RL -Analyte reporting limit. NO -Not detected at the reporting limit.
MDC -Minimum detectable concentration S -Spike recovery outside of advisory limits.
ENERGY LABORATORIES, INC. ·2393 Salt Creek Highway (82601) • P.O Box 3258 • Casper, WY 82602
lOll Free 888.235.0515 • 307.235.0515 • Fax [phone] • [e-mail] • www.energylab.com
QA/QC Summary Report
Client: Denison Mines (USA) Corp Report Date: 08/06/09
Project: Annual Spring Sampling Work Order: C09070370
Analyte Count Result Units RL %REC Low Limit HlghUmlt RPD RPDLlmlt Qual
Method: E200.8 Batch: R120875
Sample 10: LRB Method Blank Run: ICPMS2-C_090714A 07114/09 12:29
Beryllium ND mg/l 6E-05
Sample 10: LFB laboratory Fortified Blank Run: ICPMS2-C_090714A 07114/09 12:36
Beryllium 0.0471 mg/l 0.0010 94 85 115
Sample 10: C09070423-006CMS4 Sample Matrix Spike Run: ICPMS2-C_090714A 07/15/0903:01
Beryllium 0.253 mg/l 0.010 101 70 130
Sample 10: C09070423-006CMSO Sample Matrix Spike Duplicate Run: ICPMS2-C_090714A 07115/0903:07
Beryllium 0.257 mgll 0.010 103 70 130 1.6 20
Method: E200.8 Batch: R120975
Sample 10: LRB Method Blank Run: ICPMS2-C_090716A 07/16/0913:12
Beryllium ND mg/l 6E-05
Sample 10: lFB laboratory Fortified Blank Run: ICPMS2-C_090716A 07/16/0913:19
Beryllium 0.0499 mg/l 0.0010 100 85 115
Sample 10: C09070370-002BMS4 Sample Matrix Spike Run: ICPMS2-C_090716A 07/17/0900:09
Beryllium 0.0533 mg/l 0.010 107 70 130
Sample 10: C09070370-002BMSD Sample Matrix Spike Duplicate Run: ICPMS2-C_090716A 07/17/0900:16
Beryllium 0.0524 mg/l 0.010 105 70 130 1.6 20
Method: E353.2 Batch: R121253
Sample 10: MBLK·1 Method Blank Run: TECHNICON_090722A 07122/0912:43
Nitrogen, Nitrate+Nitrite as N NO mg/l 0.03
Sample 10: LCS-2 laboratory Control Sample Run: TECHNICON_090722A 07122/0912:46
Nitrogen, Nltrate+Nltrite as N 2.47 mg/l 0.10 99 90 110
Sample 10: C09070722-001BMS Sample Matrix Spike Run: TECHNICON_090722A 0712210913:01
Nitrogen, Nitrate+Nitrite as N 1.92 mg/l 0.10 96 90 110
Sample 10: C09070722-001BMSO Sample Matrix Spike Duplicate Run: TECHNICON_090722A 0712210913:03
Nitrogen, Nitrate+Nitrite as N 1.95 mg/l 0.10 98 90 110 1.6 10
Qualifiers:
RL -Analyte reporting limit. NO -Not detected at the reporting limit.
MDC -Minimum detectable concentration
ENERG YLABORA TORIE5. INC. • 2393 Salt Creek Highway (82601) .P.D. Box3258 • Casper, WY82602
ToU Free 888.235.0515 • 307.235.0515 • Fax [phone] • [e-mail]. www.energy/ab.com
QA/QC Summary Report
Client: Denison Mines (USA) Corp
Project: Annual Spring Sampling
Analyte Count Result Units
Method: E900.1
Sample 10: MB-GA"()247
Gross Alpha minus Rn & U
~ Method Blank
0.1
Gross Alpha minus Rn & U Precision {tl 0.5
pCilL
pCilL
pCi/L Gross Alpha minus Rn & U MOC 0.8
Sample 10: LCS-GA-0247
Gross Alpha minus Rn & U
Sample 10: C09070370"()03CMS
Gross Alpha minus Rn & U
Sample 10: C09070370"()03CMSO
Gross Alpha minus Rn & U
Qualifiers:
RL • Analyte reporting limit.
Laboratory Control Sample
24.0pCilL
Sample Matrix Spike
24.7pCilL
Sample Matrix Spike Duplicate
24.4pCilL
MDC • Minimum detectable concentration
Report Date: 08/06/09
Work Order: C09070370
RL %REC Low Limit High Limit RPO RPOUmit Qual
Run: BERTHOLD 770-2_090720A
Run: BERTHOLD 770·2_090720A
91 70 130
Run: BERTHOLD 770-2_090720A
90 70 130
Run: BERTHOLD 770-2_090720A
89 70 130 1.2
ND • Not detected at the reporting limit.
U • Not detected at minimum detectable concentration
Batch: GA-0247
07/2210917:17
U
07/2210917:17
07/22/0922:40
07/2210922:40
26.9
ENERGYLABORATORIES, INC •• 2393 Salt Creek Highway (82601j • P.O. Box3258 • Casper, WY82602 1:t~:tr~(6)' Toll Free 888.235.0515 • 307.235.0515 • Fax [phone] • [e-mail] ;W~ __________________________________________________________________________________ ___
QAlQC Summary Report
Client: Denison Mines (USA) Corp
Project: Annual Spring Sampling
Analyte Count
Method: SW8260B
Result Units
Sample 10: 15.July.Q9_LCS_3 12 Laboratory Control Sample
Acetone 98 ug/L
Benzene 8.5 ug/L
Carbon tetrachloride 9.0 ug/L
Chloroform 9.2 uglL
Chloromethane 8.7 uglL
m+p-Xylenes 17 ugIL
Methyl ethyl ketone 94 uglL
Methylene chloride 9.2 uglL
Naphthalene 7.4 UglL
o-Xylene S.6 uglL
Toluene 9.0 uglL
Xylenes, Total 25 uglL
Surr: Oibromofluoromethane
Surr: p-Bromofluorobenzene
Surr: Toluene-dS
Surr: 1,2-0ichlorobenzene-d4
Sample 10: 15.July.Q9_MBLK_8 16 Method Blank
Acetone NO uglL
Benzene NO ug/L
Carbon tetrachloride NO ug/L
Chloroform NO ug/L
Chloromethane NO ug/L
m+p-Xylenes NO ug/L
Methyl ethyl ketone NO ug/L
Methylene chloride NO ug/L
Naphthalene NO ugIL
o-Xylene NO ug/L
Toluene NO ug/L
Xylenes, Total NO ug/L
Surr: Oibromofluotomethane
Surr: p-Bromofluorobenzene
Surr: Toluene-dS
Surr: 1,2-0ichlorobenzene-d4
Sample 10: C09070351'()01CMS 11 Sample Matrix Spike
Benzene 100 ugIL
Carbon tetrachloride 110 uglL
Chloroform 140 uglL
m+p-Xylenes 96 uglL
o-Xylene 100 ug/L
Toluene 110 ug/L
Xylenes, Total 200 uglL
Surr: Oibromofluoromethane
Qualifiers:
RL -Analyte reporting limit.
MDC -Minimum detectable concentration
RL
20
1.0
1.0
1.0
1.0
1.0
20
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
20
1.0
1.0
1.0
1.0
1.0
20
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
10
10
10
10
10
10
10
10
Report Date: 08/06/09
Work Order: C09070370
%REC Low Limit High Limit RPO RPOLlmlt Qual
Batch: R120992
Run: GCMS2_090715A 07115/09 11 :57
98 70 130
85 70 130
90 70 130
92 70 130
87 70 130
84 70 130
94 70 130
92 70 130
74 70 130
86 70 130
90 70 130
85 70 130
110 70 130
103 80 130
105 SO 120
102 80 120
Run: GCMS2_090715A 07/15/09 13:59
105 70 130
108 80 120
104 SO 120
108 80 120
Run: GCMS2_090715A 07116/0900:04
102 70 130
111 70 130
118 70 130
96 70 130
103 70 130
107 70 130
100 70 130
119 70 130
NO -Not detected at the reporting limit.
11!/J;. ... l!/r~tf!iI 701/ Free 888.235.0515 • 307.235.0515 • Fax [phone] [e-mail] • www.energylab.com r ENERGYLABORATORIES, INC. -2393SahCreekHighway(82601) -P.o. Box3258 -Casper, WY82602
;;S;;iilllll __________________________________________________________________________________ __
QA/QC Summary Report
Client: Denison Mines (USA) Corp
Project: Annual Spring Sampling
Analyte Count
Method: SW8260B
Result Units
Sample 10: C09070351-001CMS
Surr: p-Bromofluorobenzene
Surr: Toluene-d8
11 Sample Matrix Spike
Surr: 1.2-Dichlorobenzene-d4
Sample 10: C09070351-001CMSO
Benzene
Carbon tetrachloride
Chloroform
m+p-Xylenes
o-Xylene
Toluene
Xylenes. Total
Surr: Dibromofluoromethane
Surr: p-Bromofluorobenzene
Surr: Toluene-d8
Surr: 1.2-Dichlorobenzene-d4
Qualifiers:
RL -Analyte reporting limit.
11 Sample Matrix Spike Duplicate
100 ug/L
110 ug/L
140 ugIL
100 ug/L
110 ug/L
110 ugIL
210 ug/L
MDC -Minimum detectable concentration
Report Date: 08/06/09
Work Order: C09070370
RL %REC Low Limit High Limit
Run: GCMS2_090715A
10 108 80 120
10 105 80 120
10 109 80 120
Run: GCMS2_090715A
10 105 70 130
10 113 70 130
10 121 70 130
10 104 70 130
10 110 70 130
10 110 70 130
10 107 70 130
10 116 70 130
10 107 80 120
10 104 80 120
10 108 80 120
NO -Not detected at the reporting limit.
RPO RPOUmlt Qual
2.3
1.8
2.6
8
6
3.3
7
0
0
0
0
Batch: R120992
07/16/0900:04
07/16/0900:42
20
20
20
20
20
20
20
10
10
10
10
--Chain of Custody and Analytical Request Record
Company Name:
DeN 1"0'" M. I'.v~s..
Report Mail Address: p. (). G~ '8'61
RJANi.:--'d &'1ff>J)
Invoice Address: I
8a~
PLEASE PRINT-Provide as much Information as possible.
Project Name, PWS, Permit, Etc.
~SDa.~SG<.~ll~~
Contact Name:-I I PhOllEJFax: I
~o-P-J~ ~~¥'2ZZ)
In1'etce Contact & Phone:
-.S_~~
Sample Origin
State: 1,..l."T
Email:
Purchase Order:
Page-Lof~
EPA/State Compliance:
Yes ~ No 0
Sampler: (Please Print)
112t--_f>II-/~
Quote/Bottle Order:
Special ReportlFormats -ELI must be notified
prior to sample submittal for the following:
~w@o@ ~@(!!J~ Contact ELI prior to ShIpped by:
Dow OA2LA
o li; ~1Xl u).<:: 0>:201 ccno >-~3:~m 0<15 cu
DGSA
OPOTWMNVTP
D EOO/EDT(Eleclronic Data) ~"~~I 09?li;c: "a 0
§:
~
~
Fonnat: ___ _ ~ CD3:r~ i~l~ D State: ___ _ D Other: ___ _
D LEVEL IV o NELAC
SAMPLE IDENTIFICATION
(Nam~, Location, Interval, etc.)
Collection
Date
1
'Rv.-t·,J S.o~I~ 7· T(Jt
2 n 'I t..:...g/b", /I'JUOJ S;'1Z.,1~ 17-' 7·~ 'J
3 ~ I I E N.Jvccn l..l-....;::>,e1(l.,,::,,., 17'7-01
4 g Y-I .c..c..K 5L~~ 7"7·0.,
5 I J -t' fL if) ~k,1'1 /( 7·7·61
6
~ >1
J'!::
I §
COllectionl MATRIX ~ Time
/l./OD Ih -tJ IX
1/:<5'"1 t? -i-J i"x
t2JJJ) It -' IN Ix
/400 I ~ -tAl Ix
fil [
~ "0 (,) § ~ i « .=
W "iii W E en ~ z
R I RUSH sample submittal
for charges and
scheduling -See
U Instruction Page
Comments:
51
HI
...
C \~-€t'\t
CU
Signature
Match
I~
I~ ~
I~ 1= ~
~ (0) .
7 l:,oqD'lD~7~
8 I~
9 I~
10 1.,Jj
! Custody 1/I1~ ReceiVed 6Y1j)iint): Datefime:-SljjMture:
Record DateITrne: ignature:
MUST be (---------------------------------~~----------------_t~~~~~~?~~·~~--CD~at~~~rneme:;--------------:s~ig~nat~u~reB::----------__j
Signed SamDleD~osal: RetumtoClient: __ ...1.a..b.Pisposal: j~l4 ~/Lc:tloq ~c) , c CI \.
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 site at www.energylab.com for additional information, downloadable fee schedule, forms, and links.
A-
Energy Laboratories Inc
Workorder Receipt Checklist III~IIII ~I ~II ~I~ I~ ~IIIIIIIIIIII
Denison Mines (USA) Corp
Login completed by: Corinne Wagner
Reviewed by:
Reviewed Date:
Shipping container/cooler in good condition?
Custody seals intact on shipping container/cooler?
Custody seals intact on sample bottles?
Chain of custody present?
Chain of custody signed when relinquished and received?
Chain of custody 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'
Yes 0'
Yes 0'
Yes 0"
Yes 0"
Yes 0"
Yes 0"
3'C On Ice
Yes 0"
Yes 0"
C09070370
Date and Time Received: 7/9/20099:20 AM
Received by: em
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
NoD
Carrier name: Next Day Air
Not Present 0
Not Present 0
Not Present 0'
No VOA vials submitted 0
Not Applicable 0
---------~--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Contact and Corrective Action Comments:
None
ENERGYLABORATORIE5, INC •• 2393 Salt Creek Highway (82601) .P.o. 8ox3258 • Casper, WY82602
701/ Free 888.235.0515 • 307.235.0515 • Fax [phone] • casper@energy/ab.com • www.energy/ab.com
CLIENT: Denison Mines (USA) Corp Date: 06-Aug-09
Project: Annual Spring Sampling CASE NARRATIVE
Sample Delivery Group: C09070370
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 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.
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. 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, SD
eli-t -Energy Laboratories, Inc. -College Station, TX
CERTIFICATIONS:
USEPA: WYOOOO2, 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 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.
THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT
1,600 -800
N
~ s
o 1 ,~00 I
Feet
Legend
-Groundwater Elevation Contours 10Ft <:> Well Installed 12-08
• - -Groundwater Elevation Contours 5ft
<> Final Nitrate Wells
0 Perched Monitoring Well
• Perched Monitoring Well
Installed April 2005
() Perched Piezometer
0
-$-
£
@
Temporary Perched Monitoring Well
Temporary Perched Monitoring
Well Installed April 2005
Temporary Perched Monitoring
Well Installed May 2007
Seeps and Springs
S:IProjects\lUC-001 -01 -001 Denison MineslGISlmapdocsl20091130GWElevMap.mxd
Source(s): Aerial-Utah GIS Portal website;
Wells -HGC, Inc., May 2008 report.
Figure 1
November 2009 Groundwater
Elevation Contour Map
White Mesa Mill Site and Vicinity
tt=""~ :
Ini:iC=lJl ;~~
Dean, 

As you requested, I am transmitting analytical results for Westwater Seep that were not 
included in the annual White Mesa Mill 2009 Seeps and Springs Sampling Report issued on 
November 30, 2009.  As discussed in that report, Westwater Seep was dry during the July 9, 
2009 sampling event.  A subsequent excavation in the seep soils  on November 18, 2009 yielded 
a pool of water sufficient for collection of a sample.  Analytical results for this sample and it s 
field blanks are attached to this email in pdf and electronic CSV format.   

The electronic CSV file may contain additional laboratory QC backup information not included 
with previous water quality data.  Denison Mines now requires that the laboratory provide 
digital QC backup along with digital analytical reported results, and this information is now part 
of the CSV file. 

Please contact me if you have any questions on this transmittal. 

Your truly, 
Jo Ann Tischler 
Director, Compliance and Permitting 

Jo Ann Tischler
Director, Compliance and Permitting

t: [phone] | f: [phone]
050 17th Street, Suite 950, Denver, CO 80265 1 DENISON MINES (USA) CORP