DRC-2010-006185 - 0901a068801e458c

DENISO
MINES
ORC-2010-006185
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NOV 2010 5
Division of
Sent VIA Federal Express
November 23, 2010
Mr. Rusty Lundberg
Co-Executive Secretary
Utah Water Quality Board
Utah Department of Environmental Quality
195 North 1950 West
P.O. Box 144810
Sah Lake City, UT 84114-4820
... Radiation (Control c'
Denison Mines (USA) Corp.
1050 17111 Street, Suite 9S0
Denver, CO 80265
USA
Tel: [phone]
Fax; 303 389-4125
www.denlsonmine8.com
Re: Re: Transmittal of 3rd Quarter 2010 Nitrate Monitoring Report
UDEQ Docket No. UGW-09-03- White Mesa Uranium Mill
Dear Mr. Lundberg:
Enclosed are two copies of the White Mesa Uranium Mill Nitrate Monitoring Report for the
3rd Quarter of 2010 as required by the January 2009 Stipulated Consent Agreement, UDEQ Docket
No, UGW-09-03, as well as two CDs each containing a word searchable electronic copy of the report.
If you should have any questions regarding this report please contact me.
Yours truly,
D^ms^iLs (USA) CORP.
A/^ Jo Ann Tischier
Director, Compliance and Permitting
CC: Ron F, Hochstein
David C. Frydenlund
Harold R. Roberts
David E. Turk
Kathy Weinel
White Mesa Uranium Mill
Nitrate Monitoring Report
State ofUtah
Stipulated Consent Agreement, January 2009
Docket No. UGW09-03
3rd Quarter
(July through September)
2010
Prepared by:
Denison Mines (USA) Corp.
1050 17th Street, Suite 950
Denver CO 80265
November 23, 2010
TABLE OF CONTENTS
1.0 INTRODUCTION ................................................................................................. 1
2.0 GROUNDWATER NITRATE MONITORING ................................................. 1
2.1 Samples and Measurements Taken During the Quarter ...................................... 1
2.1.1 Nitrate Monitoring ....................................................................................... 1
2.1.2 Parameters Analyzed ................................................................................... 2
2.1.3 Groundwater Head and Level Monitoring ................................................... 2
2.2 Sampling Methodology and Equipment and Decontamination Procedures ........ 3
2.2.1 Well Purging and Depth to Groundwater .................................................... 3
2.2.2 Sample Collection ........................................................................................ 3
2.3 Field Data ............................................................................................................. 5
2.4 Depth to Groundwater Data and Water Table Contour Map ............................... 5
2.5 Laboratory Results ............................................................................................... 5
2.5.1 Copy of Laboratory Results ......................................................................... 5
2.5.2 Regulatory Framework ................................................................................ 5
3.0 QUALITY ASSURANCE AND DATA VALIDATION .................................... 6
3.1 Field QC Samples ................................................................................................ 6
3.2 Adherence to Mill Sampling SOPs ...................................................................... 6
3.3 Analyte Completeness Review ............................................................................ 7
3.4 Data Validation .................................................................................................... 7
3.4.1 Field Data QAlQC Evaluation ..................................................................... 7
3.4.2 Holding Time Evaluation ............................................................................ 8
3.4.3 Receipt Temperature Evaluation ................................................................. 8
3.4.4 Analytical Method Checklist ....................................................................... 9
3.4.5 Reporting Limit Evaluation ......................................................................... 9
3.4.6 QAlQC Evaluation for Sample Duplicates .................................................. 9
3.4.7 Rinsate Check .............................................................................................. 9
3.4.8 Other Laboratory QAlQC .......................................................................... 10
4.0 INTERPRETATION OF DATA ........................................................................ 11
4.1 Interpretation of Groundwater Levels, Gradients and Flow Directions ............ 11
4.1.1 Current Site Groundwater Contour Map ................................................... 11
4.1.2 Comparison of Current Groundwater Contour Map to Groundwater
Contour Map for Previous Quarter ............................................................ 11
4.1.3 Hydrographs .............................................................................................. 11
4.1.4 Depth to Groundwater Measured and Groundwater Elevation ................. 11
4.2 Review of Analytical Results ............................................................................ 12
4.2.1 Current Nitrate and Chloride Isoconcentration Maps ............................... .12
4.2.2 Nitrate and Chloride Concentration Trend Data and Graphs .................... 12
4.2.3 Interpretation of Analytical Data ............................................................... 12
5.0
5.1
5.2
CORRECTIVE ACTION REPORT .................................................................. 13
Identification and definition of the problem ...................................................... 13
Assignment of Responsibility for Investigation of the Problem ....................... 13
5.3 Investigation and Determination of Cause of the Problem ................................ 13
5.4 Detennmation of a Corrective Action to Eliminate the Problem ...................... 13
5.5 Assigning and Accepting Responsibility for Implementing the Corrective
Action ................................................................................................................ 14
5.6 Implementing the Corrective Action and Evaluating Effectiveness .................. 14
5.7 Verifying That the Corrective Action Has Eliminated the Problem .................. 15
5.8 Assessment of Corrective Actions from Previous Period .................................. 15
6.0 CONCLUSIONS AND RECOMMENDATIONS ............................................. 15
7.0 ELECTRONIC DATA FILES AND FORMAT ............................................... 16
8.0 SIGNATURE AND CERTIFICATION ............................................................ 17
11
LIST OF TABLES
Table 1 Summary of Well Sampling and Constituents for the Period
Table 2 Nitrate Percent Difference
Table 3 Chloride Percent Difference
INDEX OF TABS
Tab A Site Plan and Perched Well Locations White Mesa Site
Tab BOrder of Sampling and Field Data Worksheets
Tab C Kriged Current Quarter Groundwater Contour Map and Depth to Water Data
Tab D Kriged Previous Quarter Groundwater Contour Map
Tab E Hydrographs of Groundwater Elevations Over Time for Nitrate Monitoring Wells
Tab F Depths to Groundwater and Elevations Over Time for Nitrate Monitoring Wells
Tab G Laboratory Analytical Reports
Tab H Quality Assurance and Data Validation Tables
H-l Field Data QAlQC Evaluation
H-2 Holding Time Evaluation
H-3 Analytical Method Check
H-4 Reporting Limit Evaluation
H-5 QAlQC Evaluation for Sample Duplicates
H-6 QC Control limits for Analysis and Blanks
H-7 Receipt Temperature Evaluation
H-8 Rinsate Evaluation
Tab I Kriged Current Quarter Nitrate and Chloride Isoconcentration Maps
Tab J Analyte Concentration Data Over Time
Tab K Nitrate and Chloride Concentration Trend Graphs
Tab L CSV Transmittal Letter
111
1.0 INTRODUCTION
The Utah Department of Environmental Quality ("UDEQ") Division of Radiation
Control ("DRC") noted in a Request dated September 30, 2008 (the "Request"), for a
Voluntary Plan and Schedule to Investigate and Remediate Nitrate Contamination at the
White Mesa Uranium Mill (the "Mill") (the "Plan"), that nitrate levels have exceeded the
State water quality standard of 10 mg/L in certain monitoring wells. As a result of the
Request, Denison Mines (USA) Corp. ("DUSA") entered into a Stipulated Consent
Agreement (the "Agreement") with the Utah Water Quality Board in January 2009 which
directed the preparation of a Nitrate Contamination Investigation Report and Quarterly
Nitrate Monitoring Reports. A subsequent letter dated December 1, 2009, among other
things, recommended that DUSA also address elevated chloride concentration in the
Nitrate Monitoring Reports.
This is the Quarterly Nitrate Monitoring Report, as required under the Agreement, State
ofUDEQ Docket No. UGW-09-03 for the third Quarter of2010 (the "Quarter").
2.0 GROUNDWATER NITRATE MONITORING
2.1 Samples and Measurements Taken During the Quarter
A map showing the location of all groundwater monitoring wells, piezometers, existing
wells, temporary chloroform contaminant investigation wells and temporary nitrate
investigation wells is attached under Tab A. Nitrate samples and measurements taken
during this reporting period (July through September 2010), are discussed in the
remainder of this section.
2.1.1 Nitrate Monitoring
Quarterly sampling for nitrate monitoring parameters was performed in the following
wells:
TWN-I
TWN-2
TWN-3
TWN-4
TWN-5
TWN-6
TWN-7
TWN-8
TWN-9
TWN-I0
TWN-l1
TWN-12
TWN-13
TWN-14
TWN -15 Piezometer 2
TWN -16 Piezometer 3
TWN-17
TWN-18
TWN-19
Upper Wildlife Pond ("UWLP")
Piezometer 1
Table 1 provides an overview of all locations sampled during the current period, along
with the date samples were collected from each location, and the date(s) upon which
analytical data were received from the contract laboratory. Table 1 also identifies rinsate
samples collected, as well as sample numbers associated with any required duplicates.
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As indicated in Table 1, nitrate monitoring was performed in all of the nitrate monitoring
wells, the UWLP, and Piezometers 1, 2, and 3. Several wells and the associated rinsate
blanks were resampled in September, 2010 for both chloride and nitrate due to turbidity
issues. TWN-1, TWN-1R, TWN-2, TWN-2R, TWN-4, TWN-4R, TWN-11, TWN-11R,
TWN-13, TWN-13R, TWN-16, TWN-16R, TWN-18, TWN-18R, TWN-19, TWN-19R,
and TWN-65 were resampled in September, 2010. The July, 2010 data for those wells is
annotated in the data packages included in Tab G and included for informational
purposes only. All of the July 2010 data which were resampled in September 2010 have
not been reviewed or validated as it will not be used for any nitrate interpretation or site
assessment.
Nitrate and chloride are also monitored in all of the Mill's groundwater monitoring wells
and chloroform investigation wells. Data from those wells for the Quarter are
incorporated in certain maps and figures in this report but are discussed in their respective
programmatic reports.
2.1.2 Parameters Analyzed
Locations sampled during this reporting period were analyzed for the following
constituents:
• Inorganic Chloride
• Nitrate plus Nitrite as Nitrogen (referred to herein as nitrate)
Use of analytical methods consistent with the requirements of the White Mesa Uranium
Mill Groundwater Quality Assurance Plan, Revision 6, March 22,2010 (the "QAP") was
confirmed for all analytes, as discussed later in this report.
2.1.3 Groundwater Head and Level Monitoring
Depth to groundwater was measured in the following wells and/or piezometers, pursuant
to Part I.E.3 ofthe Groundwater Discharge Permit (the "GWDP") (June 17,2010):
• The quarterly groundwater compliance monitoring wells.
• Existing well MW -4 and all of the temporary chloroform investigation wells.
• Piezometers -P-l, P-2, P-3, P-4 and P-S.
• MW-20 and MW-22
• Nitrate monitoring wells.
• In addition to the above, depth to water measurements are routinely observed in
conjunction with sampling events for all wells sampled during quarterly and
accelerated efforts, regardless of the sampling purpose.
All well levels used for groundwater contour mapping were measured and recorded
within 5 calendar days of each other as indicated by the measurement dates in the
summary sheet under Tab C.
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2.2 Sampling Methodology and Equipment and Decontamination Procedures
The QAP provides a detailed presentation of procedures utilized for groundwater
sampling activities under the GWDP (June 17,2010).
The sampling methodology, equipment and decontamination procedures that were
performed for the nitrate contaminant investigation, as summarized below, are consistent
with the QAP.
2.2.1 Well Purging and Depth to Groundwater
A list of the wells in order of increasing nitrate contamination is generated quarterly. The
order for purging is thus established. The list is included with the Field Data Worksheets
under Tab B. Mill personnel start purging with all of the non-detect wells and then move
to the more contaminated wells in order of nitrate contamination, starting with the wells
having the lowest nitrate contamination.
Before leaving the Mill office, the pump and hose were decontaminated using the
cleaning agents described in Section 6.2.5 of the QAP. Mill personnel then proceed to
the first well which is the well with the lowest concentration of nitrate based on the
previous quarter's sampling results. Well depth measurements are taken and the two
casing volumes are calculated (measurements are made using the same instrument used
for the monitoring wells under the Mill's GWDP). The Grundfos pump (a 6 to 10 gallon
per minute [gpm] pump) is then lowered to the bottom of the well and purging is begun.
At the first well, the purge rate is established for the purging event by using a calibrated 5
gallon bucket. After the evacuation of the well has been completed, the well is sampled
when possible, and the pump is removed from the well and the process is repeated at each
well location moving from the least contaminated to most contaminated well. If sample
collection is not possible due to the well being purged dry a sample is collected after
recovery as described below. All wells are capped and secured prior to leaving the
sampling location.
Decontamination of non-dedicated equipment, using the reagents in Section 6.2.5 of the
QAP, is performed between each sample location, and at the beginning of each sampling
day, in addition to the pre-event decontamination described above.
2.2.2 Sample Collection
Wells
Following the purging of a nitrate investigation well, the sampling takes place once
stabilization has been achieved in accordance with Section 6.2.7 of the QAP. Prior to
leaving the Mill office to sample, a cooler along with ice is prepared. A trip blank is not
required as the sampling event does not include analyses for Volatile Organic
Compounds ("VOCs"). Once Mill Personnel arrive at the well sites, labels are filled out
for the various samples to be collected. All personnel involved with the collection of
water and samples are then outfitted with rubber gloves to avoid sample contamination.
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Each sample collection event begins at the location least affected by nitrate (based on the
previous quarter's sampling event) and proceeds by affected concentration to the most
affected location. The dedicated portable pump is appropriately decontaminated prior to
each sampling event, each sampling day, and between well samples, and the Quality
Control ("QC") rinsate blank sample is collected after said decontamination but prior to
the sampling of the next sampling well. Purging practices are consistent with the
requirements of Section 6.2.7 of the QAP.
Samples are taken from the portable pump after stabilization has been achieved, unless
the well is pumped dry. If the well is pumped dry, Mill personnel use a disposable bailer
to sample the well after it has recovered in accordance with Section 6.2.7 of the QAP.
The bailer is attached to a reel of approximately 150 feet of nylon rope and then lowered
into the well. After coming into contact with the water, the bailer is allowed to sink into
the water in order to fill. Once full, the bailer is reeled up out of the well.
Sample bottles are filled as follows;
• First, a 250 ml sample is collected for nitrate/nitrite. This sample is not filtered,
but is preserved with H2S04.
• Second, a 500 ml sample is collected for chloride. This sample is not filtered and
is not chemically preserved.
After the samples have been collected for a particular well, the samples are placed into
the cooler that contains ice. The well is then recapped and Mill personnel proceed to the
next well. If a bailer has been used it is disposed of.
Ponds
Grab samples are taken from the UWLP using a disposable bailer. Sample bottles are
filled in the same manner as for wells, as stated above. After the samples are collected,
the bailer is disposed of and samples are placed into a cooler containing ice for sample
preservation and transit to the Mill's contract analytical laboratory, Energy Laboratories
("EL").
Piezometers
Samples are collected from Piezometers 1, 2 and 3, if possible. Samples are collected
from piezometers using a disposable bailer following the procedures described for wells
that have been pumped dry, above. However, due to the difficulty in obtaining samples
from the piezometers, the purging protocols set out in the QAP are not followed.
After samples are collected, the bailer is disposed of and samples are placed into a cooler
containing ice for sample preservation and transit to the Mill's contract analytical
laboratory, EL.
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2.3 Field Data
Attached under Tab B are copies of all Field Data Worksheets that were completed
during the quarter for the nitrate contaminant investigation monitoring wells,
piezometers, and UWLP identified in Section 2.1.1 above, and Table 1.
2.4 Depth to Groundwater Data and Water Table Contour Map
Depth-to-groundwater measurements which were utilized for groundwater contours are
included on the Quarterly Depth to Water Sheet at Tab C of this Report along with the
kriged groundwater contour map for the current quarter generated from this data. All
well levels used for groundwater contour mapping were measured and recorded within 5
calendar days of each as indicated by the measurement dates in the summary sheet under
Tab C. In review of the Quarterly Depth to Water Sheet (which is not the field data sheet
contemplated by the QAP) it was noted that the millimeters of mercury (MMHG) that is,
the barometric pressure, was not recorded for the quarter. This measurement is not
required by either the Permit or the QAP and as such there is no effect on the data
collected and no corrective action is required. A copy of the kriged groundwater contour
map generated from the second quarter of2010 data is provided under Tab D.
2.5 Laboratory Results
2.5.1 Copy of Laboratory Results
All analytical results were provided by EL. Table 1 lists the dates when analytical results
were reported to the Quality Assurance ("QA") Manager for each well or other sample.
Only those data which will be used for site assessment and as part of the interpretation
are included in Table 1.
Results from analysis of samples collected for the third Quarter nitrate investigation are
provided under Tab G of this Report. Also included under Tab G are the results of
analyses for duplicate samples and rinsate samples for this sampling effort, as identified
in Table 1. See the Groundwater Monitoring Report and Chloroform Monitoring Report
for the third Quarter of 2010 for nitrate and chloroform analytical results for the
groundwater monitoring wells and chloroform investigation wells not listed in Table 1.
2.5.2 Regulatory Framework
As discussed in Section 1.0 above, the Request, Plan, and Agreement each triggered a
series of actions on DUSA's part. Potential surficial sources of nitrate and chloride have
been described in the December 30, 2009 Contamination Investigation Report. This
quarterly report documents the continued monitoring consistent with the program
described in the Nitrate Contamination Investigation Report.
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3.0 QUALITY ASSURANCE AND DATA VALIDATION
The Mill QA Manager performed a QAlQC review to confirm compliance of the
monitoring program with requirements of the QAP. As required in the QAP, data QA
includes preparation and analysis of QC samples in the field, review of field procedures,
an analyte completeness review, and QC review of laboratory data methods and data.
Identification of field QC samples collected and analyzed is provided in Section 3.1.
Discussion of adherence to Mill sampling Standard Operating Procedures ("SOPs") is
provided in Section 3.2. Analytical completeness review results are provided in Section
3.3. The steps and tests applied to check field data QAlQC, holding times, receipt
temperature and laboratory data QAlQC are discussed in Sections 3.4.1 through 3.4.7
below.
The analytical laboratory has provided summary reports of the analytical QAlQC
measurements necessary to maintain conformance with National Environmental
Laboratory Accreditation Conference ("NELAC") certification and reporting protocol.
The Analytical Laboratory QA/QC Summary Reports, including copies of the Mill's
Chain of Custody and Analytical Request Record forms for each set of Analytical
Results, follow the analytical results under Tab G. Results of review of the laboratory
QAlQC information are provided under Tab H and discussed in Section 3.4, below.
3.1 Field QC Samples
The following QC samples were generated by Mill personnel and submitted to the
analytical laboratory in order to assess the quality of data resulting from the field
sampling program.
Field QC samples for the nitrate investigation program consist of one field duplicate
sample for each 20 samples, one DI Field Blank ("DIFB") and equipment rinsate
samples.
During the Second Quarter of 2010, two duplicate samples were collected as indicated in
Table 1. The duplicates were sent blind to the analytical laboratory and analyzed for the
same parameters as the nitrate wells.
Rinsate samples were also collected between well samples where non-dedicated sampling
equipment was used. Rinsate samples were labeled with the name of the subsequently
sampled well with a terminal letter "R" added (e.g. TWN-7R). The results of these
analyses are included with the routine analyses under Tab G.
3.2 Adherence to Mill Sampling SOPs
On a review of adherence by Mill personnel to the existing sampling SOPs, the QA
Manager observed that QAlQC requirements established in the QAP were being adhered
to and that the SOPs were implemented, except as described below.
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3.3 Analyte Completeness Review
All analyses required by the GWDP for nitrate monitoring for the period were performed.
3.4 Data Validation
The QAP and GWDP (June 17, 2010) identify the data validation steps and data QC
checks required for the nitrate monitoring program. Consistent with these requirements,
the QA Manager performed the following evaluations: a field data QAJQC Evaluation, a
holding time evaluation, an analytical method check, a reporting limit evaluation, a QC
evaluation of sample duplicates, a QC evaluation of control limits for analysis and
blanks, a receipt temperature evaluation, and a rinsate evaluation. Because no VOCs are
analyzed for the nitrate contamination investigation, no trip blanks are required in the
sampling program. Each evaluation is discussed in the following sections. Data check
tables indicating the results of each test are provided under Tab H.
3.4.1 Field Data QAlQC Evaluation
The QA Manager performs a review of all field recorded parameters to assess their
adherence with QAP requirements. The assessment involved review of two sources of
information: the Field Data Sheets and the Quarterly Depth to Water summary sheet.
Review of the Field Data Sheets addresses well purging volumes and stability of five
parameters: conductance, pH, temperature, redox potential, and turbidity. Review of the
Depth to Water data confirms that all depth measurements used for development of
groundwater contour maps were conducted within a five-day period of each other. The
results of this quarter's review are provided under Tab H.
Based upon this review, all well locations conformed to the QAP requirement to evacuate
two well casing volumes before sampling except TWN-2, TWN-7, TWN-9, TWN-14,
TWN-15, TWN-17. These five wells were all pumped to dryness before two casing
volumes were evacuated. In each case, representative samples of formation water were
collected after the wells were allowed to recover. Piezometers 1, 2, and 3 were not
pumped, and were sampled directly after measurement of one set of parameters. Two
casing volumes were pumped from TWN-2 and TWN-19 before they were purged to
dryness.
During review of the field data sheets, it was observed that sampling personnel
consistently recorded depth to water for the quarterly sampling programs to the nearest
0.01 foot.
All field parameters for all wells were within the QAP required limits, except as follows.
The review of the field sheets for compliance with QAP requirements resulted in the
observations noted below. The QAP requirements in Section 6.2.7 specifically state that
field parameters must have stabilized to within 10% over at least 2 consecutive
measurements. The QAP states that turbidity should be less than 5 Nephelometric
Turbidity Units ("NTU") prior to sampling unless the well is characterized by water that
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has a higher turbidity. The QAP does not require that turbidity measurements be less
than 5 NTU prior to sampling. As such, the noted observations regarding turbidity
measurements less than 5 NTU below are included for information purposes only.
• Eight well measurements and the measurements from Piezometers 1, 2 and 3
exceeded the QAP's 5 NTU goal as noted in Tab H. In addition, one well and the
UWLP turbidity measurements prior to sampling exceeded the QAP's 10% RPD
requirement as noted in Tab H. It should be noted 3.66 casing volumes (200
gallons) were purged from the well (TWN-8) which exceeded the QAP required
RPD of 10% for turbidity. All of the other stabilization parameters met the
stabilization criteria and as such the sample collected was representative of
formation water and there is no effect on the quality or usability of the data. Nine
of the wells were pumped dry prior to stabilization of turbidity or achievement of
a turbidity measurement less than 5 NTU and are not included in these totals.
DUSA's letter to DRC of March 26, 2010 discusses further why turbidity does not appear
to be an appropriate parameter for assessing well stabilization. In response to DRC's
subsequent correspondence dated June 1, 2010 and June 24, 2010, DUSA is currently
implementing a monitoring well redevelopment program. The redevelopment program
has reviewed the available turbidity data for the nitrate wells and has developed a list of
wells that have or will undergo redevelopment utilizing several strategies. The
redevelopment strategies include additional surging and bailing and overpumping as
necessary. At the completion of the redevelopment program, DUSA will review the
redevelopment data and summarize the status of the nitrate wells. Redevelopment results
will be discussed with DRC in an effort to come to a consensus regarding any additional
redevelopment steps and/or future turbidity considerations for the nitrate wells at the Mill
site.
The temperature RPD exceeded the QAP specified limit of 10% in TWN-7 because
TWN -7 was pumped dry prior to stabilization of field parameters.
3.4.2 Holding Time Evaluation
QAP Table 1 identifies the method holding times for each suite of parameters. Sample
holding time checks are provided in Tab H. All samples were received and analyzed
within the required holding time.
3.4.3 Receipt Temperature Evaluation
Chain of Custody sheets were reviewed to confirm compliance with the QAP requirement
in QAP Table 1 that samples be received at 6°C or lower. Sample temperatures checks
are provided in Tab H. All samples were received within the required temperature limit.
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3.4.4 Analytical Method Checklist
All analytical methods reported by the laboratory were checked against the required
methods enumerated in the QAP. Analytical method checks are provided in Tab H. All
methods were consistent with the requirements of the QAP.
3.4.5 Reporting Limit Evaluation
All analytical method reporting limits reported by the laboratory were checked against
the reporting limits enumerated in the QAP. Reporting Limit Checks are provided in Tab
H. All analytes were measured and reported to the required reporting limits, with the
exception of ten samples that had increased reporting limits due to matrix interference or
required dilution due to the sample concentration. However, in all of those cases the
analytical results were greater than the reporting limit used.
3.4.6 QAlQC Evaluation for Sample Duplicates
Section 9.1.4 a) of the QAP states that RPDs will be calculated for the comparison of
duplicate and original field samples. The QAP acceptance limits for RPDs between the
duplicate and original field sample is less than or equal to 20% unless the measured
results (described as activities in the QAP) are less than 5 times the required detection
limit. This standard is based on the EPA Contract Laboratory Program National
Functional Guidelines for Inorganic Data Review, February 1994,9240.1-05-01 as cited
in the QAP. The RPDs are calculated for all duplicate pairs for all analytes regardless of
whether or not the reported concentrations are greater than 5 times the required detection
limits. However, data will be considered noncompliant only when the results are greater
than 5 times the required detection limit and the RPD is greater than 20%. The additional
duplicate information is provided for information purposes.
All analytical results were within the 20% RPD acceptance limits for each of the two
duplicates and its associated well. Results of the RPD test are provided in Tab H.
3.4.7 Rinsate Check
Rinsate checks are provided in Tab H. All of the rinsate blank samples were nondetect.
A comparison of the rinsate sample concentration levels to the QAP requirements --that
rinsate sample concentrations be one order of magnitude lower than that of the actual
well --indicated that all of the rinsate blank samples met this requirement as the rinsate
blanks were all nondetect.
All rinsate blanks reported for this quarter are nondetect for nitrate. Two rinsate blanks
collected during the July event, which will not be used as they were resampled, had low
level detections of nitrate. This quarter's lack of nitrate contamination in the rinsate
blanks does not appear to be stable or consistent, as review of the fourth quarter
chloroform results shows low levels of nitrate present in the rinsate blanks. As such, the
investigation will continue into the sources of nitrate contamination in the rinsate blank
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samples in both the nitrate and chloroform sampling programs. To date, the information
pertinent to the investigation is detailed below.
The nitrate levels reported in the rinsate samples for this sampling program are similar to
the nitrate rinsate sample concentrations reported for the previous nitrate sampling
programs. Data collected for this ongoing investigation are as follows:
• The nitrate concentrations in the rinsate samples from both the chloroform
sampling program and the nitrate sampling program are just at or slightly above
the detection limit and are not dependent on or affected by the previous sample
concentrations.
• The presence of nitrate in both the chloroform and nitrate sampling programs
indicates that the contamination is due to external factors such as the nitric acid
rinse during the decontamination process and potential contamination issues
associated with the use of nitrile gloves in the presence of nitric acid.
• Nitrate was detected in a minimum of samples collected for the third quarter 2010
nitrate sampling program.
The investigation into the nitrate in the rinsate blanks is continuing with additional focus
on nitrile glove usage in the presence of nitric acid as well as the rinsate collection
process. Nitric acid introduced during the decontamination process is the single highest
possible source of nitrate ions; however, there may be some contribution of nitrate from
the decontamination process andlor the nitrile gloves. To address these issues, the
decontamination process and rinsate collection process are being reviewed to determine if
the nitrile gloves in combination with the nitric acid wash used during the
decontamination process are causing the nitrate detections in the rinsate blanks.
3.4.8 Other Laboratory QA/QC
Section 9.2 of the QAP requires that the laboratory's QAlQC Manager check the
following items in developing data reports: (1) sample preparation information is correct
and complete, (2) analysis information is correct and complete, (3) appropriate Analytical
Laboratory procedures are followed, (4) analytical results are correct and complete, (5)
QC samples are within established control limits, (6) blanks are within QC limits, (7)
special sample preparation and analytical requirements have been met, and (8)
documentation is complete. In addition to other laboratory checks described above,
DUSA's QA Manager rechecks QC samples and blanks (items (5) and (6» to confirm
that the percent recovery for spikes and the relative percent difference for spike
duplicates are within the method-specific required limits, or that the case narrative
sufficiently explains any deviation from these limits. Results of this quantitative check
are provided in Tab H. All lab QAlQC results met these requirements.
10
N:lRequired Report,lNitr.te Quarterly Monitoring Report12010 QJ12010 QJ Nitrate Report text-doc
4.0 INTERPRETATION OF DATA
4.1 Interpretation of Groundwater Levels, Gradients and Flow Directions.
4.1.1 Current Site Groundwater Contour Map
As stated above, a listing of groundwater level readings for the current quarter (shown as
depth to groundwater in feet) is included under Tab C. The data from this tab has been
interpreted (kriged) and plotted in a water table contour map, provided under the same
tab. The contour map is based on the September 29,2010 data for all wells.
4.1.2 Comparison of Current Groundwater Contour Map to Groundwater
Contour Map for Previous Quarter
The groundwater contour map for the Mill site for the second quarter of 2010, as
submitted with the Nitrate Monitoring Report for the second quarter of 2010, is attached
under Tab D.
A comparison of the water table contour map for the third quarter of 2010 to the water
table contour map for the previous (second) quarter indicates similar patterns of
drawdown related to pumping of MW-4, MW-26 (TW4-15), TW4-4, TW4-19 and TW4-
20. Water levels and water level contours for the site have not changed significantly
since the last quarter, except for a few locations. Pumping at TW4-4, which began in the
first quarter of 2010, has depressed the water table near TW 4-4, but does not yet appear
to have measurably affected water levels at adjacent wells.
A reported decrease in water level of approximately 6 feet occurred in well TW4-21.
A reported decrease in water level of approximately 26 feet occurred in pumping well
TW4-19, and a reported increase in water level of approximately 14 feet occurred in
pumping well TW4-4. Water level changes at other pumping wells were less than 5 feet.
Water level fluctuations at pumping wells MW-4, MW-26 (TW4-15), TW4-4, TW4-19,
and TW4-20 are due in part to fluctuations in pumping conditions just prior to and at the
time the measurements are taken. The largest decrease (increase in drawdown) of
approximately 26 feet occurred in well TW4-19 and the largest increase (decrease in
drawdown), of approximately 14 feet, occurred at TW4-4.
4.1.3 Hydrographs
Attached under Tab E are hydro graphs showing groundwater elevation in each nitrate
contaminant investigation monitor well over time.
4.1.4 Depth to Groundwater Measured and Groundwater Elevation
Attached in Tab F are tables showing depth to groundwater measured and groundwater
elevation over time for each of the wells listed in Section 2.1.1 above.
11
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4.2 Review of Analytical Results
4.2.1 Current Nitrate and Chloride Isoconcentration Maps
Included under Tab I of this Report are current nitrate and chloride iso-concentration
maps for the Mill site. Nitrate iso-contours start at 5 mg/L and chloride iso-contours start
at 5 mg/L because those values appear to separate the plumes from background. All
nitrate and chloride data used to develop these iso-concentration maps are from the third
quarter 2010 sampling events.
4.2.2 Nitrate and Chloride Concentration Trend Data and Graphs
Attached under Tab J is a table summarizing values for nitrate and chloride for each well
over time. Some data (MW-18, MW-19 and the Frog Pond) were not sampled this period
but the historical data are included for information purposes.
Attached under Tab K are graphs showing nitrate and chloride concentration trends in
each monitor well over time.
4.2.3 Interpretation of Analytical Data
Generally, the shapes of the nitrate and chloride plumes appear to be stable and
unchanged for the last four quarters. The nitrate and chloride plumes maintain their
general geographic association, and it is still possible to separate the plumes into a
segment northeast of the wildlife ponds and a southwest segment near the mill site.
Nitrate and chloride concentrations in samples from the downgradient edge of the plumes
(in the vicinity of tailings impoundment monitoring wells MW-30 and MW-31) have
remained essentially unchanged (current concentration within one standard deviation of
the average of the previous three quarters and within laboratory variation) and the plume
does not appear to be migrating in the downgradient direction. In general, both nitrate
and chloride concentrations in nitrate monitoring wells are within about 30 percent of last
quarter's concentration (Tables 2 and 3).
Exceptions include a 400 percent decline in chloride concentration and a 43 percent
decline in nitrate concentration in samples from TWN-lO. A 70 percent increase in
chloride concentration was observed in samples from TWN-7 and a 50 percent increase
in nitrate concentration was observed in samples from TWN-13 and TWN-16. However,
concentrations of nitrate in the latter two wells are low and small changes can produce a
large percent difference. Nitrate concentrations in samples from chloroform monitor well
TW4-12 decreased from 11 mg/L in the second quarter of 2010 to the current sample
concentration of 9 mg/L, bringing it below the 10 mg/L groundwater standard for nitrate.
Changes in concentrations in samples from TW4-12 may be due to changes in
groundwater flow direction as a result of pumping for chloroform remediation or they
may be due to the general variability of groundwater data. The current quarter's data
continue to support the conclusion in the Nitrate Contamination Investigation Report that
the nitrate and chloride are co-extensive and appear to originally come from the same
source.
12
N:IRequired Report,lNitr.te Quarterly Monitoring Report12010 QJ12010 QJ Nitrate Report text doc
5.0 CORRECTIVE ACTION REPORT
Necessary corrective actions identified during the current monitoring period are described
below.
5.1 Identification and definition of the problem
Turbidity
Turbidity RPDs exceeded 10% for nine nitrate sampling wells.
Nitrate Contamination in Rinsate Blanks
DI water used for decontamination does not show the presence of nitrate. Contamination
does not appear to be related to the nitrate presence in the preceding well that was
purged. Rinsate samples following high concentration wells appear to be the same as
rinsate samples following low concentration wells, rinsate samples following purging of
uncontaminated wells appear to also be contaminated with nitrate. Presence of nitrate in
the rinsate samples is not consistent from one sampling event to the next.
5.2 Assignment of Responsibility for Investigation of the Problem
The problems have been investigated by the QA Manager.
5.3 Investigation and Determination of Cause of the Problem
Turbidity
Data indicate that it may not be feasible to achieve both a turbidity level of less than 5
NTU and a stabilized turbidity between any two measurements within 10% RPD in every
well. DUSA is currently implementing well redevelopment in response to DRC's letters
dated June 1, 2010 and June 24, 2010 to address turbidity variances.
Nitrate Contamination in Rinsate Blanks
To address the nitrate contamination, DUSA will continue investigating additional
conditions which may be causing the nitrate contamination by mobilizing nitrogen
compounds present in nitrile gloves (such as leaching from the gloves by the nitric acid).
In addition, DUSA has requested in the revised QAP, submitted June 4, 2010, the
removal of the nitric acid rinse step when samples are not collected for heavy metals,
which will effectively remove the source of nitrate. DUSA will proceed with the removal
ofthat step only upon approval of the QAP revision.
5.4 Determination of a Corrective Action to Eliminate the Problem
Turbidity
DUSA's letter to DRC of March 26, 2010 discusses further why turbidity does not appear
to be an appropriate parameter for assessing well stabilization. In response to DRC's
subsequent correspondence dated June 1, 2010 and June 24, 2010, DUSA is currently
implementing a redevelopment program. The redevelopment program has reviewed the
13
N:lRequired ReportslNitrate Quarterly Monitoring Report12010 Q31201 0 Q3 Nitrate Report t«t.doc
available turbidity data for the nitrate wells and developed a list of wells that will
undergo redevelopment utilizing several strategies. The redevelopment strategies include
additional surging and bailing and over pumping as necessary. Currently, all of the
nitrate wells have been redeveloped by surging and bailing. Over pumping will be
utilized as necessary based on the results of the surging and bailing. At the completion of
the redevelopment program, DUSA will review the redevelopment data and summarize
the status of the nitrate wells. Redevelopment results will be discussed with DRC in an
effort to come to a consensus regarding future turbidity considerations for the nitrate
wells at the Mill site.
Nitrate Contamination in Rinsate Blanks
The nitrate source is most likely the nitric acid rinse used during decontamination
procedures, however, additional conditions which may be contributing to the nitrate
detections in the rinsate blanks are being investigated. The additional items for
investigation include the leachability of nitrogen ions from nitrile gloves and the
decontaminationlrinsate procedure itself.
5.5 Assigning and Accepting Responsibility for Implementing the Corrective
Action
It will be the responsibility of the Director, Compliance and Permitting to implement the
following corrective actions.
5.6 Implementing the Corrective Action and Evaluating Effectiveness
Turbidity
Redevelopment of the wells at the Mill is underway. DUSA has completed a review of
historical well development data in response to DRC's letters dated June 1, 2010 and
June 24, 2010 and the parameters developed on July 12, 2010 and July 15, 2010 to
determine the list of wells requiring redevelopment. The first step of redevelopment by
surging and bailing is completed for all of the nitrate wells. Over pumping will be
employed as necessary based on the results of the surging and bailing.
Nitrate Contamination in Rinsate Blanks
Nitrate sources will be removed after the removal of the nitric acid rinse from the
decontamination procedure when heavy metals are not collected, assuming requisite
changes to the QAP submitted June 4, 2010 are approved by the Executive Secretary.
Additive effects from the decontaminationlrinsate procedure and the contribution from
the use of nitrile gloves in the presence of nitric acid are being investigated to determine
additional factors which may be increasing nitrate contamination.
14
N:lRequired Report,lNitrate Quarterly Monitoring Report120 10 Q3120 I 0 Q3 Nitrate Report text,doc
5.7 Verifying That the Corrective Action Has Eliminated the Problem
Turbidity
Verification will occur following review of the well redevelopment data and development
of further actions plans as required.
Nitrate Contamination in Rinsate Blanks
Verification of nitric acid as the source of the nitrate contamination cannot be completed
until the Executive Secretary approval of the June 4, 2010 QAP revision is received and
the other investigations have ruled out other sources.
5.8 Assessment of Corrective Actions from Previous Period
The previous Nitrate Monitoring Report (DUSA August 30, 2010) specified corrective
actions for depth to water measurements. The assessment of those corrective actions is
discussed below.
The corrective action specified in the previous report for depth to water measurements
that were measured properly to the nearest 0.01 feet, but trailing zeros were not recorded
on the field sheets, included advising field staff to record the measurements fully and for
DUSA to implement a data capture system.
As required, field staff were advised of the proper recording of depth to water
measurements. In addition, data were checked as soon as possible after collection to
assure proper recording of depth to water measurements. All measurements were
recorded properly and the corrective action was successful in preventing recurrence.
Furthermore, the data capture system has been modified to accommodate the field forms
in the approved QAP. Implementation of this system will begin during the fourth quarter
2010 sampling event.
Full verification of the data capture implementation portion of the corrective action will
be completed after the fourth quarter field activities.
6.0 CONCLUSIONS AND RECOMMENDATIONS
Generally, the shapes of the nitrate and chloride plumes appear to be stable and
unchanged for the last four quarters. The nitrate and chloride plumes maintain their
general geographic association and it is still possible to separate the plumes into a
segment northeast of the wildlife ponds and a southwest segment near the Mill site.
Nitrate and chloride concentrations in samples from the downgradient edge of the plumes
(in the vicinity of tailings impoundment monitoring wells MW-30 and MW-31) have
remained essentially unchanged (current concentration within one standard deviation of
the average of the previous three quarters and within laboratory variation) and the plume
does not appear to be migrating in the downgradient direction. In general, both nitrate
and chloride concentrations in nitrate monitoring wells are within about 30 percent of last
15
N:IRequired Report,lNitrste Quarterly Monitoring Reportl2OlO Q312010 Q3 Nitrate Report text.doc
quarter'S concentration (Tables 2 and 3).
The current quarter's data continue to support the conclusion in the Nitrate
Contamination Investigation Report that the nitrate and chloride are co-extensive and
appear to originally come from the same source.
7.0 ELECTRONIC DATA FILES AND FORMAT
DUSA has provided to the Executive Secretary an electronic copy of all laboratory
results for groundwater quality monitoring conducted under the nitrate contaminant
investigation during the Quarter, in Comma Separated Values ("CSV") format. A copy
of the transmittal e-mail is included under Tab 1.
16
N,lRoqu;rod Ropart$\Nii!1lteQual1erly Monitoring Repon12010 Q312010 QJ Nhratcltepon ttott.doc
8.0 SIGNATURE AND CERTIFICATION
This document was prepared by Denison Mines (USA) Corp. on November 23, 2010.
(OSA) CORP.
By:
Da i . Fr enlund
Vice P 'esident Regulatory Affairs and Counsel
17
N;IRO'luirod Rep<>rhWo,,,,,,, Qu."crly Monitoring Rep<>rt12010 Q312010 Q3 NitnlleR"""" '<lXI.doc
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, accW'ate, and complete. [am aware that there are
significant pen a les for submitting false information, including the possibility of fine and
impriso lent £ r knowing violations.
D ay' . ryd
Vice President, Regulatory Affairs and Counsel
Denison Mines (USA) Corp.
18
~,\R",!ui .. d ReponslNitr'OlO Qu.rttrl~ Monilori"il RcpUrt\2.()IO 03\2010 QJ Nilr.It.Roport Icxl.doo
Tables
Table 1
Summary of Well S8mplin~ and Constituents for the Period
Well Sample CollectionDate Date of Lab Report
Piezometer I 7/19/2010
Piezometer 2 7/19/2010
Piezometer 3 7119/2010
TWN-I 9/27/2010
TWN-IR 9/27/2010
TWN-2 9/29/2010
TWN-2R 9/28/2010
TWN-3 7115/2010
TWN-3R 7114/2010
TWN-4 9/27/2010
TWN-4R 9/27/2010
TWN-5 711212010
TWN-5R 7112/2010
TWN-6 7113/2010
TWN-6R 711312010
TWN-7 7/14/2010
TWN-7R 7113/2010
TWN-8 711212010
TWN-8R 711212010
TWN-9 7/15/2010
TWN-9R 7/14/2010
TWN-IO 7/1412010
TWN-IOR 711312010
TWN-II 9/27/2010
TWN-IIR 9/27/2010
TWN-12 7112/2010
TWN-12R 7/12/2010
TWN-13 9/27/2010
TWN-13R 9/27/2010
TWN-14 7115/2010
TWN-14R 7/14/2010
TWN-15 7/13/2010
TWN-15R 7/1212010
TWN-16 9/27/2010
TWN-16R 9/27/2010
TWN-17 7115/2010
TWN-17R 7/1412010
TWN-18 9/2712010
TWN-18R 9/27/2010
TWN-19 9/29/2010
TWN-19R 9/28/2010
TWN-65 9/27/2010
TWN-60 7/1512010
UWLP 7/19/2010
PondD 7/19/2010
Note: All wells were sampled for Nitrate and Chloride
TWN·60 is a DI Field Blank
TWN·65 is a duplicate of TWN·ll , and Pond 0 is a duplicate ofUWLP
UWLP is a sample from the Upper Wildlife Pond
8/412010
8/412010
8/4/2010
10119/2010
10/1912010
10/1912010
10/19/2010
7/28/2010
7/28/2010
10119/2010
10/1912010
7/28/2010
7128/2010
7128/2010
7/28/2010
7/28/2010
7/28/2010
7/28/2010
7/28/2010
7/28/2010
7/28/2010
7/28/2010
7/28/2010
10119/2010
10119/2010
7128/2010
712812010
1011912010
10/1912010
7/28/2010
7/28/2010
7/28/2010
7/28/2010
10119/2010
10/19/2010
7/28/2010
7128/2010
10/19/2010
10119/2010
10/19/2010
10119/2010
10119/2010
7/28/2010
8/412010
8/412010
Location 4th Q2009
Piez 1 NA
Piez2 NA
Piez 3 NA
TWN 1 0.5
TWN 10 1.4
TWN 11 1.3
TWN 12 0.5
TWN 13 0.5
TWN 14 3.4
TWN ]5 1.1
TWN 16 1
TWN ]7 6.7
TWN 18 1.3
TWN 19 7.4
TWN2 20.8
TWN3 29
TWN4 0.4
TWN5 0.2
TWN6 1.4
TWN7 0.1
TWN8 0.1
TWN9 12
Red value indicates nondetect
Table 2
Nitrate (mg/L)
Ist Q 2010 2nd Q 2010
NA 7.2
NA 0.6
1.7 1.6
0.5 0.6
1.5 ]
1.4 1.3
0.7 0.8
0.1 0.1
2.9 2.9
0.7 1
1.2 1.3
10.4 11
1.6 1.8
7.2 6.2
62.1 69
25.3 26
0.9 1
0.3 0.3
1.5 1.4
0.8 1.2
0.1 0.1
7.6 7.7
3rd Q 2010 % Difference 2nd
and3rd Q
6.8 -6
0.6 0
1.8 11
0.6 0
0.2 -400
1.4 7
0.7 -14
0.2 50
3.5 17
1 0
2.6 50 .
8.9 -24
1.8 0
7.2 14
69 0
27 4
0.9 -11
0.3 0
1.4 0
1.6 25
0.1 0
10.7 28
Location 4th Q2009
Piez 1 NA
Piez2 NA
Piez 3 NA
TWN 1 18
TWN 10 26
TWN 11 74
TWN 12 109
TWN 13 83
TWN 14 32
TWN 15 78
TWN 16 39
TWN 17 152
TWN 18 57
TWN 19 125
TWN2 55
TWN3 106
TWN4 11
TWN5 48
TWN6 21
TWN7 7
TWN8 12
TWN9 205
Table 3
Chloride (mg/L)
1st Q 2010 2nd Q2010
NA 52
NA 8
116 36
17 20
54 30
73 72
113 106
47 49
24 30
43 39
35 35
78 87
42 63
118 113
85 97
III 118
22 22
43 44
19 22
6 6
11 11
183 175
3rd Q 2010 % Difference 2nd
and 3rd Q
52 0
8 0
35 -3
19 -5
21 -43
76 5
112 5
53 8
26 -15
36 -8
35 0
66 -32
64 2
113 0
104 7
106 -11
19 -16
43 -2
73 70
7 14
11 0
210 17
INDEX OF TABS
Tab A Site Plan and Perched Well Locations White Mesa Site
Tab B Order of Sampling and Field Data Worksheets
Tab C Kriged Current Quarter Groundwater Contour Map and Depth to Water Data
Tab D Kriged Previous Quarter Groundwater Contour Map
Tab E Hydrographs of Groundwater Elevations Over Time for Nitrate Monitoring WelIs
Tab F Depths to Groundwater and Elevations Over Time for Nitrate Monitoring Wells
Tab G Laboratory Analytical Reports
Tab H Quality Assurance and Data Validation Tables
H-l Field Data QAJQC Evaluation
H-2 Holding Time Evaluation
H-3 Receipt Temperature Check
H-4 Analytical Method Check
H-5 Reporting Limit Evaluation
H-6 QAIQC Evaluation for Sample Duplicates
H-7 Rinsate Check
H-8 QC Control Limits for Analyses and Blanks
Tab I Kriged Current Quarter Isoconcentration Maps
Tab J Analyte Concentration Data Over Time
Tab K Concentration Trend Graphs
Tab L CSV Transmittal Letter
Tab A
Site Plan and Perched Well Locations White Mesa Site
/J
I(
II
",;;9
j}9'
I!.lr
II I II
II
II #
~ ~.:::-.
II ~!
1-
o
MW-20
~ =::::!-
II
II
/1
II
II
:: 32
II
II
II
II
II
[I
[[
[[
II
\ .~'21
II
II
II
\\ ~ ~
N ~
SCALE IN FEET
EXPLANATION
~ ~
• perched monitoring well
TW4-19 o temporary perched monitoring well
PI~Z-1 perched piezometer
TWN-1
~
TW4-26
~
MW-34
-Q-
temporary perched nitrate
monitoring well
temporary perched monitoring well
installed May, 2010
perched monitoring well installed
August/September, 2010
MW-G2 •
MW~5
-9-1
I
PROPERTY
BOUNDARY
l
II
1/
{(
~
~ Ii MW -_ MW-34 M~--9--9--_ •
~
MW-G3 •
MW-20 •
II
II
II
1/
II
/1
II
'l
MW-G1 •
~5
o TWN-7
CELL NO.1
CELL NO.2
MW-17 •
33
MW-18 •
o TWN-18
o TWN-3
o TWN-6
o
TWN-a
o TWN-15
o
TWN-10
o TWN-9
PIEZ-1 ..
MW-19 •
PIEZ-2 ..
"'~f
PIEZ-3 ..
-26 TW4_1cPTW4-9
o OTW4-3 OTW4-12
OTW4-1!bTW4-11 OTW4-13
TW4-7~-a
OTW4-1
OTW4-40TW4_14
TW4-23 OTW4-6 o
mYl4-26
o TWN-11
o TWN-14
PIEZ-4 /~.=:--=----.?' ----"
* PIEZ-5 ..
? / ?
T378
T388
o
o TWN-12
~'---=-~, --=--=--~-:::::::.
1/ ~~~~~-=-4--=--=--=--=--=--=--=--=--=--=-~7! ~~~4 ~
3000
f wildlife pond
HYDRO
GEO
CHEM, INC. "PPROVED
SJS
MW-22 • II
#
//
#
#
#
#
#
#
#
#
SITE PLAN
AND PERCHED WELL LOCATIONS
WHITE MESA SITE
DATE REFERENCE
Hfl18000/nov1 Olwelloc1 O.srf
T
~ ~
[]
~
"
FIGURE
TabB
Order of Sampling and Field Data Worksheets
Nitrate Order
3rd Quarter 2010
Nitrate Samples
Name Nitrate Mill Date/Pur,_ sampl_ Depth Total Depth
TWN·S ND
TWN-ll 0.1
TWN-S 0.3
lWN·l 0.6
lWN-12 0.8
TWN-1S 1
TWN-4 1
TWN·I0 .. 1
lWN·711 1.2
lWN·16 1.3
lWN-ll 1.3
TWN-6 1.6
TWN-IB 1.8
TWN·14 ~ 2.9
lWN-19 6.2
TWN·9 .. 7.7
lWN·1711 11
lWN-l., 26
TWN-2 69
Plez 1 7.2
Pia 2 0.6
Pfez3 1.6
wildlife NO
1-12..2'" 0 0 .. :0 "".35
1.~ • .ao.O 10,"0 11."1
1.,.a-AoI4 0 11111 ,'..:al
.,.~·aot~o I~~ ''t.~~
17.1.1...,;wD 0 Illt7 ~.31
11_1'.;r.CD 0 OCol5 42.~Cf
1.1~ ~...,n) o~3Cf "","1 "" ,-1'1 .. ~tIO 0 O~ J~.o.s
,. ~ ·;t.o1O 0 DE,&o 'f'.~1
[".I' . .!lDt4) 0 I~I~ -.((.75
I.,. ,'\.!ltN, 0 1~t.5 ~.50
17-~-~ 0 mil 63.1"
!7.1"'~ 0 bit'" &01.6
l1.1S-~1I 0 D810 . ,~.~~
7-Pl-~O 0 04S\ ... U
'-IS--loo 0 OSoo ".C,&(
1-1~.~1) 0 61!.1~ ~.'fb
11-\~-.loIf> 0 en!$) ~·oD
'1-I" .. ~ 0 J'tZl _31.4~
17·14·~~ 111$7 &~.).5
1'1 -14 • !),.I' taIIM I 1111 I-'.~' r'·Ie, ,~ l~ul'l SJ.8 L' 17-,'1-1mo t"10f
--r~Al b!) 1 .. r3-jO O~~~
eO 7 .. JS·ID 08'15
145.5
120
150
112.5
110
155
125.7
lOS
lOS
100
142
130
145
135
110
97
110
!Hi
!Hi
o
Rinsate Samples
Name Date Sample
TWN-8R 7.,:a.-l) 01'/,
TWN-13R 'J·Il·" aual
TWN-5R I.,-I,-ID 1050
TWN-IR 1 "7-1"-'0 I~'f
TWN-12R 'N2-1O .,2'f
TWN·1SR '7-~ ... "
TWN-1R ,..1'·10 011&
TWN-IOR .., .11-}0 oql2
TWN-7R '1-K..m ...... IIL -~
lWN-16R 17-13 ... 10 I()"'~ v .
TWN·UR 1-1J .. '0 ,
lWN·6R 11-l!t.0 ISSb
TWN·18R 11.'11·»11> 6~~
TWN-14R " .. I .. -~I on •
TWN·19R 7-"-__ D"'; Of.!!
lWN-9R "7..M .. ~ IOn
TWN·17R , ..... 2.1~ .2J'f
TWN-3R ~-lb" \3Q.
TWN-2R 1"7-' ... ·~. I'IO~
SMnplers: 1M ... " doIlitk¥
I
,..... NItrat. Mt/L
TWN .. NO 0
eax * nw-u 0.1 '.~""JU 0 -.
TWN-S 0.) 0
*TWN-l 0.5 14..2...,·, .. o O'U
TWN-lJ 0.1 0
TWN-lS 1 0
-Ir'TWN-4 1 4l"~'6 o ItR2.
TWN-I0 1 0
TWN-7 1.2 0
~ TWN-ll 1.3 I • .,. .... o .tUS
-*,TWN-ll 1.3 14.n-1U 0 IUL
TWtH 1.5 0
7r TWN-l1 1.1 .'·21~ o 1'12.&1
lWN-1. 2.t 0
~ lWN-lt U 4~·'O 0 Ol'A.
lWN-t 7.7 II
TWN·17 11 II
1WN-) 21 II * TWM-1
II _11 0
PIe. 1 7.2
..... 1 0.1
PIal 1.1 0 ...... NO
Nitrate Order
3rd Quarter 2010
II .... __ RI~ 5am"-:---.. I T ..... Dlpth .. _-____ ... _ ... __ -....,; .......
l-U.s
u, ... 120
150
.alt.'" lU.5
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TabC
Kriged Current Quarter Groundwater Contour Map and Depth to Water Summary
Quarterly Depth to Water
NAME: Tanner Holliday, Garrin Palmer MMHG:
Start time: 730
DATE: 9/29/2010 Finish Time: 1442
TIME WELL 1.0. DEPTH TIME WELL 1.0. DEPTH TIME WELL 1.0. DEPTH
922 MW-l 65.32 812 TW4-l 63.32 846 PIEZ-l 62.11
1433 MW-2 109.74 815 TW4-2 67.48 841 PIEZ-2 15.36
1359 MW-3 84.02 816 TW4-3 48.72 830 PIEZ-3 38.07
1400 MW-3A 85.57 819 TW4-4 68.25 1345 PIEZ-4 48.85
1000 MW-4 74.00 823 TW4-5 56.15 1348 PIEZ-5 44.19
1256 MW-5 106.47 827 TW4-6 70.75
957 MW-ll 89.61 1259 TW4-7 67.62 819 TWN-l 48.91
1223 MW-12 108.55 1341 TW4-8 67.06 751 TWN-2 15.32
1236 MW-14 103.83 915 TW4-9 54.67 822 TWN-3 31.64
1240 MW-15 106.53 918 TW4-l0 56.39 827 TWN-4 37.28
1354 MW-17 76.22 1317 TW4-ll 57.95 1917 TWN-5 69.83
914 MW-18 70.49 835 TW4-12 38.55 909 TWN-6 74.70
843 MW-19 51.22 837 TW4-13 46.77 918 TWN-7 89.43
1412 MW-20 84.11 839 TW4-14 88.40 911 TWN-8 61.74
1418 MW-22 67.27 845 TW4-15 78.02 847 TWN-9 64.20
1219 MW-23 119.31 851 TW4-16 63.48 907 TWN-l0 81.56
1214 MW-24 114.65 941 TW4-17 76.41 901 TWN-l1 69.60
1249 MW-25 75.02 818 TW4-18 57.67 859 TWN-12 34.51
845 MW-26 78.02 856 TW4-19 96.13 849 TWN-13 46.95
811 MW-27 51.00 905 TW4-20 69.20 852 TWN-14 63.00
950 MW-28 77.30 815 TW4-21 62.75 904 TWN-15 92.23
947 MW-29 102.49 909 TW4-22 54.12 856 TWN-16 48.42
945 MW-30 76.13 921 TW4-23 65.90 854 TWN-17 34.78
943 MW-31 69.12 925 TW4-24 55.65 825 TWN-18 57.95
941 MW-32 76.41 813 TW4-25 46.23 740 TWN-19 53.38
1442 MW-33 107.94 927 TW4-26 64.73
1440 MW-34 DRY
1438 MW-35 112.31
Comments: MW-15 was found unlocked, problem was taken care of. Tanner and Garrin split up to
perform depth checks so some of the times may appear to be on top of each other but there were two technicians.
I '(.
/I r(
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II
II
II
II
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PROPERTY
BOUNDARY
MW-01 e5582
MW-18 e5587
~585
TWN-10
~583 TWN-9
~-­b~--=== b' -
~? y
---------~ ---55
~ ~
[]
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II
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L============~"""""""~============~ MW-22 " II
50 "# # o
MW-22
.5450
0 5555
PIEZ-1
iii 5593
TWN-4 ~5605
1W4-26
~5537
MW-34
-¢-5492
SCALE IN FEET
EXPLANATION
perched monitoring well showing
elevation in feet amsl
temporary perched monitoring well
showing elevation in feet amsl
perched piezometer showing
elevation in feet amsl
temporary perched nitrate monitoring well
showing elevation in feet amsl
temporary perched monitoring well installed
May, 2010 showing elevation in feet amsl
perched monitoring well installed
August/September, 2010
showing elevation In feet amsl
3000 #
#
# #
#
#
#
# NOTE: MW-4, MW-26, TW4-4, TW4-19 and TW4-20 are pumping wells
HYDRO
GEO
CHEM,INC_ APPROVED
KRIGED 3rd QUARTER, 2010 WATER LEVELS
WHITE MESA SITE
DATE REFERENCE FIGURE
SJS H:/718000/nov1 O/w1091 O.srf
\.
TabD
Kriged Previous Quarter Groundwater Contour Map
p
((
II
II # ~ #-. ~=~-
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ll 32
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5584
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c
(
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liiiiiiiiiiiiiiiiiiiiiiiiiiiii~~~_~~!
o
MW-22
• 5450
0 5556
PIEZ-l
iii 5594
SCALE IN FEET
EXPLANATION
perched monitoring well showing
elevation in feet amsl
temporary perched monitoring well
showing elevation in feet amsl
perched piezometer showing
elevation in feet amsl
~-4 temporary perched nitrate monitoring well
V 5605 showing elevation in feet amsl
~256537 temporary perched monitoring well installed
M' May, 2010 showing elevation in feet amsl
3000
s.,6'o
"" II MW-22 "// 50 //
//
//
//
//
//
//
//
//
NOTE: MW-4, MW-26, TW4-4, TW4-19 and TW4-20 are pumping wells
HYDRO
GEO
CHEM,INC. APPROVED
KRIGED 2nd QUARTER, 2010 WATER LEVELS
WHITE MESA SITE
DATE REFERENCE FIGURE
SJS H:l718000/aug1 O/wl061 O.srf
\
TabE
Hydrographs of Groundwater Elevations Over Time for Nitrate Monitoring Wells
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TabF
Depths to Groundwater and Elevations Over Time for Nitrate Monitoring Wells
Water Levels and Data over Time
White Mesa Mill-Well TWN-l
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation urface Elevation Length Of Date Of Water Water Depth Of
(WL) ~LSD) (MP) Riser ~L) Monitoring {blw.MP) (blw.LSD2 Well
5,646.96 5648.09 1.13 112.5
5,600.38 02/06/09 47.71 46.58
5,599.99 07/21 /09 48.10 46.97
5,600.26 09121 /09 47.83 46.70
5,601.10 10128/09 46.99 45.86
5,602.59 12/14/09 45.50 44.37
5,600.55 03111110 47.54 46.41
5,600.66 05/11 /10 47.43 46.30
5,.599.18 09/29/10 48.9 1 47.78
Water Levels and Data over Time
White Mesa Mill-Well TWN-2
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
~WL) ~LS:D) (MP) Riser(L) Monitoring (blw.MP) (blw.L D) Well
5625.75 5626.69 0.94 95
5,611.37 02/06/09 15.32 "14.38
56"10.63 07/21 /09 16.06 15.12
5,609.73 9/21 /2009 '16.96 16.02
5,607.08 11 /2/2009 19.61 18.67
5,606.57 12/14/2009 20.12 19.18
5,612.45 03/11 /10 14.24 13.30
5,612.78 05/11 /10 13.91 12.97
5,611.37 09/29/10 15.32 l4.38
Water Levels and Data over Time
White Mesa Mill .. Well TWN ... 3
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation LengtbOf Date Of Water Water Depth Of
(WL) ~LSD) (MP) Riser (L) MOilitorin~ (blw.MP) (blw.LSD~ Well
5,633.64 5,634.50 0.86 110
5,603.77 02/06/09 30.73 29.87
5,602.37 7121/2009 32.13 31.27
5,602.34 9/2J /2009 32.16 31.30
5,602.60 10128/2009 31.90 31.04
5,603.12 12/14/2009 31.38 30.52
5,602.90 03111/10 31 .60 30.74
5603.23 05111 /10 31.27 30.41
5,602.86 09129/10 31.64 30.78
Water Levels and Data over Time
White Mesa Mill -Well TWN-4
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(wq ~LSD) ~MP~ Riser ~L) Monitoring (blw.MP) (blw.LSD) Well
5,641.04 5,641.87 0.83 136
5,601.47 02/06/09 40.40 39.57
5604.26 7/2 112009 37.61 36.78
5,605.02 9/21 12009 36.85 36.02
5,605.87 10/2 8/2009 36.00 35.17
5,605.81 1211 4/2009 36.06 35.23
5605.31 03/11/10 36.56 35.73
5,605.36 0511 111 0 36.51 35.68
5,604.59 09/29/10 37.28 36.45
Water Levels and Data over Time
White Mesa Mill -Well TWN-5
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surrace Elevation Length Of Date Of Water Water Depth or
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5653.70 5,655.18 1.48 155
5,584.43 08125/09 70.75 69.27
5,584.51 9121 /2009 70.67 69.,19
5,584.54 11 11 012009 70.64 69.16
5,584.62 12/14/2 009 70.56 69.08
5,584.97 0311\/\0 70.21 68 .73
5,585.38 0511 1/10 69.8 68.32
5,585.35 09129/10 69.83 68.3 5
Water Levels and Data over Time
White Mesa Mill-Well TWN-6
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Oepth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,663.03 5,664.94 1.91 135
5,589.52 08/25/09 75.42 73.51
5589.46 9/22/2009 75.48 73.57
5,589.61 1113/2009 75.33 73.42
5,589.92 12/14/2009 75.02 73.1 J
5,590.24 03/11 11 0 74.70 72.79
5590.40 05/11110 74.54 72.63
5590.24 09129/10 74.70 72.79
Water Levels and Data over Time
White Mesa Mill-Well TWN-7
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevatjon Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP~ Riser (L) Monitorhl~ (blw.MP) (blw.LSD) Well
5,647.39 5.649.26 1,87 120
5,552.56 08/25/09 96.70 94.83
5,558.34 912112009 90.92 89.05
5,558.82 11/1012009 90.44 88.57
5,558.96 12114/2009 90.30 88.43
5,559.54 03/11110 89.72 87.85
5,559.60 05/1 1110 89.66 87.79
5,559.83 09/29/10 89.43 87.56
Water Levels and Data. over Time
White Mesa Mill-Well TWN-8
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD2 (MP) Riser (L) Mo.oitoring {blw .. MP) (blw.LSD) Well
5,649.35 5,651.48 2.13 160
5,589.01 08/25/09 62.47 60.34
5,589.10 9121 /2009 62.38 60.25
5589.09 11 /3/2009 62.39 60.26
5,603.38 12/1412009 48.10 45.97
5,589.68 0311 1/10 61.80 59.67
5589.95 0511 1/10 61.53 59.40
5,589.74 09129/10 61.74 59.61
Water Levels and Data over Time
White Mesa Mill-Well TWN-9
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP~ (blw.LSD) Well
5,645.68 5,647.45 1.77 102.5
5582.05 08/25/09 65.40 63.63
5,582.12-9/22/2009 65.33 63.56
5582.27 IJ /I0/2009 65.18 63.41
5,582.53 12/14/2009 64.92 63 .J5
5,582.92 03 /11/10 64.53 62.76
5583.06 05/11 /10 64.39 62.62
5583.25 09/29/]0 64.20 62.43
Water Levels and Data over Time
White Mesa Mill-Well TWN-IO
Total or
Measuring Measured Total
Water Land Poi.ot Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5664.63 5,666.98 2.35 107.5
5,584.18 08/25/09 82.80 80.45
5,584.40 9/22/2009 82.58 80.23
5,584.61 11/10/2009 82.37 80.02
5584.90 12/14/2009 82.08 79.73
5,585.21 03/11110 81.77 79.42
5,585.42 05/11110 81.56 79.21
5,585.42 09/291'[0 81 .56 79.21
Water Levels and Data over Time
White Mesa Mill-Well TWN-ll
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) {MP) Riser (L~ Monitoring (blw.MP) (blw.LSD) Well
5,683.16 5,684.53 1.37 147.5
5,613.00 1 Ll03/09 71.53 70.16
5,613.88 1211412009 70.65 69.28
5,614.65 03/11/10 69.88 68.51
5,615.16 05/11/10 69.37 68.00
5,614.93 09/29/10 69.60 68.23
Water Levels and Data over Time
White Mesa Mill-Well TWN-12
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP~ Riser ~L2 Monitoring (blw.MP) (blw.LSD) Well
5,667.03 5668.24 1.21 115
5,628.33 11 /03/09 39.91 38.70
5628.86 12114/2009 39.38 38.17
5630.27 03111110 37.97 36.76
5.631.64 05111110 36.60 35.39
5,633.73 09/29/10 34.51 33.30
Water Levels and Data over Time
White Mesa Mill-Well TWN-13
Total or
Measuring Measured Total
Water Land Point Depth to Oepth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (q Monitoring (blw.MP) (blw.LSD) Well
5,633.04 5,634.32 1.28 120
5,586.95 11103/09 47.37 46.09
5,587.22 12114/2009 47.1 45.82
5,587.45 03/11/10 46.87 45.59
5,587.64 05/11/10 46.68 45.40
5,587.37 09/29/10 46.95 45.67
Water Levels and Data over Time
White Mesa MiII-Well TWN-14
Total or
Measuring Measured Total
Wate .. Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP~ Riser (L) Monitoring (blw.MP) (blw.LSD~ Well
5,647.80 5,649.53 1.73 135
5,586.18 11 /04/09 63 .35 61.62
5,586.51 12/14/2009 63.02 61.29
5,586.71 0311 1110 62.82 61.09
5,586.72 05/11/10 62.81 61 .08
5,586.53 09/2 9110 63.00 61.27
Water Levels and Dat3 over Time
White Mesa Mill-Well TWN-15
Total or
Measuring Measured Total
Water Land Point Deptb to Deptb to Total
Elevation Surface Elevation LengtbOf Date Of Water Water Depth Of
~WL~ (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD} Well
5 675.01 5 676.49 1.48 155
S,594.12 11 /10/09 82.37 80.89
5,584.03 12/1412009 92.46 90.98
5,584.10 03/111 10 92.39 90.9 1
5,584.16 05111 /10 92.33 90.85
5,584.26 09/29/10 92.23 90.75
Water Levels and Data over Time
White Mesa Mill-Well TWN-16
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) ~MP) Riser {L~ MonitorinG (blw.MP) (blw.LSD) Well
5651.07 5,652.70 1.63 100
5,603.34 11 /04/09 49.36 47.73
5603.56 12/14/2009 49.14 47.51
5,603.84 03/11 /10 48.86 47.23
5,604.31 05/11110 48.39 46.76
5,604.28 09/29/10 48.42 46.79
Water Levels and Data over Time
White Mesa Mill-Well TWN-17
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) (LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.LSD) Well
5,639.73 5,641.55 1.82 100
5,605.96 J 1/04/09 35.59 33.77
5606.27 12114/2009 35.28 33.46
5,606.25 03111110 35.30 33.48
5,606.55 05/11 /10 35.00 33.18
5,606.77 09/29/10 34.78 32.96
Water Levels and Data over Time
White Mesa MiIl-Well TWN ·18
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) ~LSD) (MP) Riser {L~ Monitoring (blw.MP) (blw.LSD) Well
5,643.95 5,645.45 l.50 100
5,586.85 11/02/09 58.60 57.10
5600.14 12114/2009 45.31 43.81
5587.36 03/11110 58.09 56.59
5587.71 05/1 1110 57.74 56.24
5,587.50 09/29/10 57.95 56.45
Water Levels and Data over Time
White Mesa Mill-Well TWN-19
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
(WL) ~LSD) (MP) Riser (L) Monitoring (blw.MP) (blw.L D) Well
5659.59 5661.36 1.77 110
5,606.17 11 /02/09 55.19 53.42
5,606.70 12114/2009 54.66 52.89
5607.22 03/11 /10 54.14 52.37
5,607.89 05/1 1110 53.47 51.70
5,607.98 09/29/\0 53.38 51.61
TabG
Laboratory Analytical Reports
-
www.energylab.com EN:RGY
: 1\\ 1t )1 (,\ I r)\ ~ I • AIIIfTIkII £lcIIIwrcI stl!u ,at Helens, MT 877-472-0711 • Billings, MT 800-J35-4489 • Casper, WY 888-235-0515
Gillette. WY 118-188-7175 • Rapid City, SD 188-172-1225 • College station, TX 888-690-2218
July 28, 2010
Denison Mines USA Corp
6425 S Hwy 191
Blanding, UT 84511
Workorder No.: C10070624
ANAL VTICAL SUMMARY REPORT
Quote ID: C3317 -Nitrate and Chloride Sampling
Project Name: 3rd Quarter Nitrate and Chloride
Energy Laboratories, Inc. received the following 41 samples for Denison Mines USA Corp on 7/16/2010 for analysis.
Sample ID Client Sample ID Collect Date Receive Date Matrix Test
C10070624-001 TWN8R 07/12/10 08:46 07/16/10 Aqueous Chloride
Nitrogen, Nitrate + Nitrite
C 10070624-002 TWN 13R 07/1211009:54 07/16/10 Aqueous Same As Above
C 1 0070624-003 TWN5R 07/12/10 10:50 0711611 0 Aqueous Same As Above
Cl0070624-004 TWN1R 07/12/1 0 12 :34 0711611 0 Aqueous Same As Above
C 10070624-005 TWN 12R 07/12/1013:2407/16/10 Aqueous Same As Above
C 10070624-006 TWN 15R 07/12/1014:2607/16/10 Aqueous Same As Above
Cl0070624-007 TWN4R 07/13/1008:15 07/16/10 Aqueous Same As Above
Cl0070624-008 TWN10R 07/13/1009:12 07116/10 Aqueous Same As Above
C 10070624-009 TWN7R 07/13/10 10:00 07/16/10 Aqueous Same As Above
C1 0070624-01 0 TWN 16R 07/13/10 10:49 07/16/10 Aqueous Same As Above
Cl0070624-011 TWN llR 07/13/1012:4707/16/10 Aqueous Same As Above
Cl0070624-012 TWN6R 07/13/10 13:50 07116/10 Aqueous Same As Above
Cl0070624-013 TWN 18R 07/14/1007:53 07/16/10 Aqueous Same As Above
Cl0070624-014 TWN 14R 07/14/1008:41 07/16/10 Aqueous Same As Above
C10070624-015 TWN 19R 07/14/10 09 :35 07/16/10 Aqueous Same As Above
Cl0070624-016 TWN9R 07/14/10 10:32 07/16/10 Aqueous Same As Above
Cl0070624-017 TWN 17R 07/14/10 12:17 07/16/10 Aqueous Same As Above
C 10070624-018 TWN3R 07/14/1013:1207/16/10 Aqueous Same As Above
C10070624-019 TWN2R 07/14/10 14:03 0711611 0 Aqueous Same As Above
C 10070624-020 TWN60 07/15/10 08:45 07/16/10 Aqueous Same As Above
C10070624-021 TWN8 07/12/1009:23 07/16/10 Aqueous Same As Above
Cl0070624-022 TWN13 07/12/10 10:20 07/16/10 Aqueous Same As Above
C 1 0070624-023 TWN5 07/12/1011:1407/16/10 Aqueous Same As Above
C 10070624-024 TWN 1 07/12/10 12:53 07/16/10 Aqueous Same As Above
C 10070624-025 TWN12 07/12/10 13:47 07/16/10 Aqueous Same As Above
Cl0070624-026 TWN 15 07/13/1006:15 07/16/10 Aqueous Same As Above
Cl0070624-027 TWN4 07/13/10 08:39 0711611 0 Aqueous Same As Above
C 1 0070624-028 TWN10 07/14/10 06:28 07/16/10 Aqueous Same As Above
Page 1 of 21
EN:RGY
l 1\ I I ( ..' I ... ,'\ I ' '" ~ I .
C10070624-029 TWN7
C 1 0070624-030 TWN16
C10070624-031 TWN 11
C 1 0070624-032 TWN6
C 1 0070624-033 TWN18
C 1 0070624-034 TWN14
C 10070624-035 TWN19
C 10070624-036 TWN9
C10070624-037 TWN 17 .
C10070624-038 TWN3
C 1 0070624-039 TWN2
C 10070624-040 TWN65
www.energylab.com
AIIfI1/IrII EmIIItIu SIra 1m
Helena, MT 877·472-0711 • BIllings, MT 800-735-4489 • Casper, WV 888-235-0515
Gilletto, WY 88B-188-7175 • Rapid City, SD 888-172-1225 • College Stalion, lX 888-690-2218
ANALYTICAL SUMMARY REPORT
07/14/10 06:10 07/16/10 Aqueous Same As Above
07/13/1012:1207/16/10 Aqueous Same As Above
07/13/1013:1507/16/10 Aqueous Same As Above
07/13/10 14:24 07/16/10 Aqueous Same As Above
07/14/10 08:16 07/16/10 Aqueous Same As Above
07/15/1008:10 07/16/10 Aqueous Same As Above
07/14/10 09:59 07/16/10 Aqueous Same As Above
07/15/10 08:00 07/16/10 Aqueous Same As Above
07/15/1008:1807/16/10 Aqueous Same As Above
07/15/10 07:50 07/16/10 Aqueous Same As Above
07/14/10 14:22 07/16/10 Aqueous Same As Above
07/13/10 08:39 07/16/10 Aqueous Same As Above
C10070624-041 Temp Blank 07/15/10 00:00 07/16/10 Aqueous Temperature
This report was prepared by Energy Laboratories, Inc" 2393 Salt Creek Hwy" Casper, WY 82601, Any exceptions
or problems with the analyses are noted in the Laboratory Analytical Report, the OA/OC Summary Report, or the
Case Narrative,
The results as reported relate only to the item(s) submitted for testing,
If you have any questions regarding these test results, please call.
Report Approved By: cS¥~ £J uJtJ.~
Reporting Supervisor
Digitally Signed by
Stephanie Waldrop
Date: 2010,07,2915:45:48 -06:00
Page 2 of 21
www.energyiab.com Halena, MT 877-472-0111 • Billings, MT 800-735-4489 • Casper, WY 888-235-0515
AIfI1IIaI bcII1ItN:t Sinct rm
CLIENT: Denison Mines USA Corp
Project: 3rd Quarter Nitrate and Chloride Report Date: 07/28/10
Sample Delivery Group: C 10070624 CASE NARRATIVE
ORIGINAL SAMPLE SUBMITIAL(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 TOS 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
Data for PCBs, Atrazine and Simazine are reported from EPA 525.2. PCB data reported by ELI 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. 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
CERTIFICATIONS:
USEPA: WY00002, Radiochemical WY00937; FL-DOH NELAC: E87641, Radiochemical E871 017; 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 felr 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.
Page 3 of 21
EI\ERGY
I I\-;()I? 'I '1 ~I '.
www.energylab.com
AuIyfIaI ExuIIItIw SI1Iu llU
Halena, MT 877-472-0711 • Billings, MT 800-135-4489 . Casper, 'NY 888-235-0515
GIIIBtta, WY 886-88&-7175 • Rapid City, SD 888-&12-1225 • Collage Station, TX 881-&90-2218
LABORATORY ANALYTICAL REPORT
Client: Denison Mines USA Corp
Site Name: 3rd Quarter Nitrate and Chloride
Lab ID: C10070624-001
Client Sample ID: TWN 8R
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
c
La
Client Sample
Matrix:
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab ID: C10070624-003
Client Sample ID: TWN 5R
Matrix:
Analyses
MAJOR IONS
Chloride
Aqueous
Nitrogen, Nitrate+Nitrite as N
Matrix:
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Report Rl -Analyte reporting limit.
Definitions: QCl -Quality control limit.
Result Units
NO mg/L
NO mg/L
NO mg/L
NO mg/l
Result Units
NO mg/l
NO mg/l
NO mg/L
NO mg/l
Qualifiers
Qualifiers
Rl
1
0.1
Rl
0.1
Rl
0.1
Rl
Report Date: 07/28/10
Collection Date: 07/12/1008:46
DateReceived: 07/16/10
Mell
QCl Method Analysis Date I By
A4500-CI 8 07/20/10 11 :33 /lr
E353.2 07/26/1015:31 /Iii
Collection Date: 07/12/1009:54
DateReceived: 07/16/10
MCll
QCl Method Analysis Date I By
07/20/10 11 :36 1 Ir
Collection Date: 07/12/10 10:50
DateReceived: 07/16/10
MCU
QCl
MCU
Method Analysis Date 1 By
A4500-C18 07/20/10 11 :37 1 Ir
E353.2 07/26/10 15:36 /Iii
Collection Date: 0711211012:34
DateReceived: 07/16/10
QCl Method Analysis Date 1 By
A4500-CI 8 07/20/10 11 :38 /lr
07/26/10 15 :39 /Iii
MCl -Maximum contaminant level.
NO -Not detected at the reporting limit.
Page 4 of 21
EN:RGY
, l\ynl~;\l '''f-ll •
www.energylab.com
AMIyfJaI EmIItIIn SbIu 1m Helena, MT 877-472·0711 • Billings, MT 800·735·4489 • Casper, WY 888·235·0515
Gillette, WY 888-888-7175 • Rapid City, SD 818-872-1225 • College Station, TX 888-690-2218
LABORATORY ANALYTICAL REPORT
Client: Denison Mines USA Corp
Site Name: 3rd Quarter Nitrate and Chloride
Lab ID: C10070624-005
Client Sample ID: TWN 12R
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab ID: C10070624-006
Client Sample ID: TWN 15R
Matrix:
Analyses
MAJOR IONS
Chloride
Aqueous
Nitrogen, Nitrate+Nitrite as N
Matrix:
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
LablD: C 10070624-008
Client Sample ID: TWN10R
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Report RL -Analyte reporting limit.
Definitions: QCL -Quality control limit.
Result Units
NO mglL
NO mglL
Result Units
NO mglL
NO mglL
ND
NO
Result
ND
NO
mg/L
mglL
Units
mglL
mglL
Qualifiers
Qualifiers
Qualifiers
Rl
1
0.1
Rl
1
0.1
Rl
0.1
RL
0.1
Report Date: 07/28/10
Collection Date: 07/1211 0 13:24
DateReceived: 07/16/10
MCW
QCL Method Analysis Date 1 By
A4500-CI B 07120/10 11 :43 /lr
E353.2 07/26/1015:41/ Ijl
Collection Date: 07/1211 0 14:26
DateReceived: 07/16/10
MCll
QCl
MCW
Method Analysis Date 1 By
A4500-CI B 07/20/10 11 :4511r
E353.2 07/26/10 15:51 /ljl
Collection Date: 07/13/10 08:15
DateReceived: 07/16/10
QCL Method Analysis Date 1 By
07120/10 11 :47 1 Ir
Collection Date: 07/13/1009:12
DateReceived: 07/16/10
MCW
QCL Method Analysis Date 1 By
A4500-CI B 07/20/10 11 :48 /lr
E353.2 07/26/10 15:56 /ljl
MCL -Maximum contaminant level.
NO -Not detected at the reporting limit.
Page 5 of 21
EN:RGY
l 1\'1()1/.'\1 C'I .. [ ~
www.energylab.com
AuIyfIaIEz"",-SIJa 1m Helena, MT 877·472·0711 • Billings, MT 800·735-4489 . Casper, WY 888-235-0515
Gillatte, WY88S-88B· 7175 • Rapid City, SD 888-872-1225 • Collage Station, 1X 888-690-2218
LABORATORY ANALYTICAL REPORT
Client: Denison Mines USA Corp
Site Name: 3rd Quarter Nitrate and Chloride
Lab 10: C10070624-009
Client Sample 10: TWN 7R
Matrix:
Analyses
MAJOR IONS
Chloride
Aqueous
Nitrogen, Nitrate+Nltrite as N
~D: _____
Client SamplelD.
Matrix:
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab 10: C10070624-012
Client Sample 10: TWN 6R
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Report RL -Analyte reporting limit.
Definitions: QCL -Quality control limit.
Result Units
NO mglL
NO mg/L
NO mglL
0.2 mg/L
NO mg/L
NO mglL
Result Units
NO mglL
NO mg/L
Qualifiers
Qualifiers
RL
,
0.1
Rl
RL
0.1
RL
,
0.1
Report Date: 07/28/10
Collection Date: 0711311010:00
DateReceived: 07/16/10
MCll
QCl Method Analysis Date I By
A4500-CI 8 07/20/10 11 :56 IIr
E353.2 07/26/1015:591 Ijl
Collection Date: 07/13/1010:49
DateRecelved: 0711611 0
MCll
QCl Method Analysis Date I By
MCW
07/20/10 11 :57 1 Ir
Collection Date: 07/13/1012:47
DateReceived: 07/16/10
QCl Method Analysis Date 1 By
07/20/10 11 :59 1 Ir
Collection Date: 07/13/1013:50
DateReceived: 07/16/10
MCW
QCl Method Analysis Date 1 By
A4500-CIB 07/20/10 12:00/lr
E353.2 07/26/10 16:14/ Ijl
MCL -Maximum contaminant level.
NO -Not detected at the reporting limit.
Page 6 of 21
EN:RGY
) I\~OH/.I ' )1.(1 .~
www.energylab.com
~£xuIIHt:tSlnu 1m Halena, MT 877-472-0711 • Billings, MT 800-735-4489 • Casper, WY 888-235-0515
Gillatta, WY 88~888-7175 • Rapid City, SD 888-872-1225 • College Station, TX 888-690-2218
LABORATORY ANALYTICAL REPORT
Client: Denison Mines USA Corp
Site Name: 3rd Quarter Nitrate and Chloride
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab 10: C10070624-014
Client Sample 10: TWN 14R
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab 10: C10070624-016
Client Sample 10: TWN 9R
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Report RL -Analyte reporting limit.
Definitions: QCL -Quality control limit.
NO mg/L
NO mg/L
Result Units
NO mglL
NO mglL
ND mglL
NO mglL
Result Units
NO mg/L
ND mglL
RL
0.1
Qualifiers RL
0.1
RL
0.1
Qualifiers RL
0.1
Report Date: 07/28/10
Collection Date: 07/14/1007:53
DateReceived: 07/16/10
MCW
QCL Method Analysis Date I By
07/20/10 12:02 IIr
Collection Date:
DateReceived: 07116/1 0
MCW
QCL Method Analysis Date I By
MCW
A4500-CI 8 07/20/10 12:03/1r
E353.2 07/26/1016:19 /ljl
Collection Date: 07114/10 09:35
DateReceived: 07/16/10
QCL Method Analysis Date I By
07/20/10 12:15/1r
Collection Date: 07/14/10 10:32
DateReceived: 07/16/10
MCW
QCL Method Analysis Date I By
A4500-CIB 07/20/10 12:16/1r
E353.2 07/26/10 16:31 Iljl
MCL -Maximum contaminant level.
NO -Not detected at the reporting limit.
Page 7 of 21
EI\ERGY
11\·)()I~,~I ~JJ~1 ~
www.energylab.com
AM/yfII:M £mItHa Sba 1m Helens, MT 817·472·0711 • Billings, MT 800·735·4489 • Casper, WY 888·235·0515
GIIIBtta, WY 81B-686·7175 • Rapid City, SD 888·672·1225 • Calloge Stalion,lX 888-690·2218
LABORATORY ANALYTICAL REPORT
Client: Denison Mines USA Corp
Site Name: 3rd Quarter Nitrate and Chloride
Lab ID: C10070624-017
Client Sample ID: TWN 17R
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab ID: C10070624-018
Client Sample ID: TWN 3R
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
LablD: C 1 0070624-020
Client Sample ID: TWN60
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Report Rl -Analyte reporting limit.
Definitions: Qel -Quality control limit.
Result Units
NO mg/l
NO mg/l
Result Units
NO mg/l
NO mg/l
NO mg/l
0.1 mg/l
Result Units
NO mg/l
NO mg/l
Qualifiers
Qualifiers
Qualifiers
Rl
,
0.1
Rl
0.1
Rl
0.1
Rl
0.1
Report Date: 07/28/10
Collection Date: 07/14/1012:17
DateReceived: 07116/10
MCl!
QCl Method Analysis Date! By
A4500-CI B 07/20/1012:18 /lr
E353.2 07/26/10 16:34 /ljl
Collection Date: 07/14/1013:12
DateReceived: 07/16/10
MCl!
QCl Method Analysis Date 1 By
MCl!
A4500-CI B 07/20/10 12:19 /lr
E353.2 07/26/10 16:36 /ljl
Collection Date: 07/14/10 14:03
DateReceived: 07/16/10
QCl Method Analysis Date 1 By
07/20/10 12:22 /lr
Collection Date: 0711511008:45
DateReceived: 07/16/10
MCW
QCl Method Analysis Date! By
A4500-CI B 07/20/10 14:14/1r
E353.2 07/26/10 16:41 /ljl
MCl -Maximum contaminant level.
NO -Not detected at the reporting limit.
Page 8 of 21
EN:RGY
I "'\Il{ 'fV'. '':-'''1 "_
www.energylab.com
AuIyfIaI ExnIIIRu smc. 'flU
Halena, MT 811·472·0711 • Billings, MT 800·135-4489 • Casper, 'NY 888-235·0515
Gillette, 'NY 88&-88&·7115 • Rapid City, SD 118·872·1225 • College Station, TX 888·690·2218
LABORATORY ANALYTICAL REPORT
Client: Denison Mines USA Corp
Site Name: 3rd Quarter Nitrate and Chloride
Lab ID: C10070624-021
Client Sample ID: TWN 8
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Matrix:
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
LablD: C10070624-023
Client Sample ID: TWN5
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Matrix:
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Report RL -Analyte reporting limit.
Definitions: QCL -Quality control limit.
Result
11
NO
49
NO
Result
43
0.3
18
0.5
Units
mg/L
mg/L
mg/L
mg/L
Units
mg/L
mg/L
mg/L
mg/L
Qualifiers RL
0.1
RL
0.1
Qualifiers RL
0.1
RL
Report Date: 07/28/10
Collection Date: 07/12/10 09:23
DateReceived: 07/16/10
MCU
QCL
MCU
Method Analysis Date 1 By
A4500-CI B 07/20/10 14:161 Ir
E353.2 07/26/10 16:491 Ijl
Collection Date: 07/12/10 10:20
DateRecelved: 07/16/10
QCL Method Analysis Date 1 By
07/20/10 14:22/1r
Collection Date: 07/12/1011 :14
DateReceived: 07/16/10
MCU
QCL Method Analysis Date 1 By
A4500-CI B 07/20/10 14:24 IIr
E353.2 07/26/10 16:54/1jl
Collection Date: 07/1211012:53
DateReceived: 07/16/10
MCU
QCL Method Analysis Date 1 By
A4500-CI B 07/20/1014:271 Ir
07/26/10 16:56/1jl
MCl -Maximum contaminant level.
NO -Not detected at the reporting limit.
Page 9 of 21
EN:RGY
Il\qOP)\I "UI "
www.energylab.com
AtuIyfIaI ~ SItIU ,1ft
Helena, MT B17-472·0711 • BIllings, MT 800·735·4489 • Casper, WY BBB·235·0515
Gillette, WY 888-188-7175 • Rapid City, SD 888-872-1225 • ColIsge Stll/on, TX 888-690-2218
LABORATORY ANALYTICAL REPORT
Client: Denison Mines USA Corp
Site Name: 3rd Quarter Nitrate and Chloride
Lab ID: C10070624-025
Client Sample ID: TWN 12
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab ID: C10070624-026
Client Sample 10: TWN 15
Matrix:
Analyses
MAJOR IONS
Chloride
Aqueous
Nitrogen, Nitrate+Nitrite as N
L':ii1D.
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
lab 10: C10070624-028
Client Sample 10: TWN 10
Matrix:
Analyses
MAJOR IONS
Chloride
Aqueous
Nitrogen, Nitrate+Nitrite as N
Report RL -Analyte reporting limit.
Definitions: QCL -Quality control limit.
Result Units
112 mg/L
0,7 mg/L
Result Units
36 mg/L
1.0 mg/L
20 mg/L
1,0 mg/L
Result Units
21 mg/L
0,2 mg/L
Qualifiers Rl
0,1
Qualifiers Rl
1
0,1
Qualifiers Rl
0,1
Qualifiers Rl
0,1
Report Date: 07/28/10
Collection Date: 07/12/1013:47
DateReceived: 07/16/10
MCll
QCl Method Analysis Date 1 By
A4500-CI B 07/20/10 14:33/1r
E353,2 07/26/10 16:59/1jl
Collection Date: 07/13/10 06:15
DateReceived: 07/16/10
MCW
QCl
MCW
Method Analysis Date 1 By
A4500-CI B 07/20/10 14:34/1r
E353,2 07/26/10 17:0911jl
Collection Date: 07/13/10 08:39
DateReceived: 07/16/10
QCL Method AnalysiS Date 1 By
07/20/10 14:36/1r
Collection Date: 07/14/1006:28
OateReceived: 07/16/10
MCll
QCl Method Analysis Date 1 By
A4500-CI B 07/20/10 14:55/1r
E353,2 07/26/10 17:1411jl
MCL -Maximum contaminant level.
ND -Not detected at the reporting limit.
Page 10 of21
EI'-ERGY
I id."O r v .... I FJI~r 'J
www.energytab.com
AMIJfIaI ExuIIHeI SInu ,m Helen., MT 877-472-0111 • Billings, MT 800-735-4489 • Casper, WY 881-235-0515
Giliotta, WY 888-8BB-7175 • Rapid City, SD 818-872-1225 • College Station,TX 881-690-2218
LABORATORY ANALYTICAL REPORT
Client: Denison Mines USA Corp
Site Name: 3rd Quarter Nitrate and Chloride
Lab 10: C10070624-029
Client Sample 10: TWN 7
Matrix: Aqueous
Analyses Result Units
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
L;S1
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab 10: C10070624-032
Client Sample 10: TWN6
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Report RL -Analyte reporting limit.
Definitions: QCL -Quality control limit.
7
1.6
32
1.9
74
1.3
Result
73
1.4
D -RL increased due to sample matrix.
mg/L
mg/L
mg/L
mglL
mg/L
mg/L
Units
mg/L
mglL
Qualifiers RL
D 0.2
RL
D 0.2
RL
0.1
Qualifiers RL
D 0.2
MCU
Report Date: 07/28/10
Collection Date: 07/14/1006:10
DateRecelved: 07/16/10
QCL Method Analysis Date I By
A4500-CI B 07/20/10 14:58/1r
E353.2 07/26/10 17:16 IIjl
Collection Date: 07/13/1012:12
DateReceived: 07/16/10
MCU
QCL Method Analysis Date I By
07/20/10 14:59 Ilr
Collection Date: 07/13/1013:15
DateReceived: 07/16/10
MCU
QCL Method Analysis Date I By
07/20/10 15:02 IIr
Collection Date: 07/13/10 14:24
DateReceived: 07/16/10
MCU
QCL Method Analysis Date I By
A4500-CI B 07/20/10 15 :03 IIr
E353.2 07/26/1017:31 Iljl
MCL -Maximum contaminant level.
ND -Not detected at the reporting limit.
Page 11 of 21
EN:RGY
1 1\I .. H')P/\lr ~!11 "
www.energylab.com
AtIIIytkM ExuIJIMt SbIu rat
Helena, MT 817-472-0111 • Billings, MT 800-735-4489 • Casper, WV 888-235-0515
Gillette, WV 888-888-7175 • Rapid City, SD 888-&72-1225 • Collega Stallon, TX 888-680-2218
LABORATORY ANALYTICAL REPORT
Client:
Site Name:
Analyses
MAJOR IONS
Chloride
Denison Mines USA Corp
3rd Quarter Nitrate and Chloride
Nitrogen, Nitrate+Nitrite as N
61
1.7
LablD: C10070624-034
Client Sample ID: TWN14
Matrix: Aqueous
Analyses Result
MAJOR IONS
Chloride 26
Nitrogen, Nitrate+Nitrite as N 3.5
Analyses
mg/l
mg/L
Units
mg/L
mg/L
MAJOR IONS
Chloride 115 mg/L
Nitrogen, Nitrate+Nitrite as N 6.1 mg/L
LablD: C10070624-036
Client Sample ID: TWN9
Matrix: Aqueous
Analyses Result Units
MAJOR IONS
Chloride 210 mg/L
Nitrogen, Nitrate+Nitrite as N 10.7 mglL
Report RL -Analyte reporting limit.
Definitions: QCL -Quality control limit.
D -RL increased due to sample matrix.
Rl
D 0.2
Qualifiers RL
D 0.2
Rl
D 0.5
Qualifiers RL
D 0.5
Report Date: 07/28/10
Collection Date: 07/14/1008:16
DateReceived: 07/16/10
MCll
QCl Method Analysis Date 1 By
07/20/10 15:05/1r
Collection Date: 07/15/10 08:10
DateReceived: 07/16/10
MCll
QCl Method Analysis Date 1 By
A4500-CI B 07/20/1 0 15 :08 fir
E353.2 07/26/1017:36 fiji
Collection Date: 07/14/1009:59
DateReceived: 07/16/10
MCL!
QCl Method Analysis Date 1 By
07/20/10 15 :30 fir
Collection Date: 07/15/10 08:00
DateReceived: 07/16/10
MCL!
QCl Method Analysis Date 1 By
A4500-CI B 07/20/10 15:35 fir
E353.2 07/26/10 17:49/1jl
MCL -Maximum contaminant level.
ND -Not detected at the reporting limit.
Page 12 of 21
EN:RGY
'I\HPPI\I 'JI1! "
www.energylab.com
AH/yIbI~stnu 1m Halena, tIT 877-472-0111 • Bllllnls, tIT 800-135-4489 • Caspar, WY 888-235-0515
Gillatta, WY 888-888-7175 . Rapid City, SD 888-872-1225 • College Station, TX 888-690-2218
LABORATORY ANAL YTrCAL REPORT
Client: Denison Mines USA Corp
Site Name: 3rd Quarter Nitrate and Chloride
Lab ID: C10070624-037
Client Sample ID: TWN 17
Matrix:
Analyses
MAJOR IONS
Chloride
Aqueous
Nitrogen, Nitrate+Nitrite as N
Lab 10: C10070624-038
Client Sample ID: TWN3
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Matrix:
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Report RL -Analyte reporting limit.
Definitions: QCL -Quality control limit.
Result Units
66 mg/L
8.9 mg/L
Result
106
27
92
67
Units
mg/L
mg/L
mg/L
mg/L
21 mg/L
1.0 mg/L
D -RL increased due to sample matrix.
Qualifiers Rl
D 0.5
Qualifiers Rl
D 2
Rl
D 2
Rl
Report Date: 07/28/10
Collection Date: 07/15/1008:18
DateRecelved: 07/16/10
MCll
QCl Method Analysis Date 1 By
A4500-CI B 07/20/10 15:36 IIr
E353.2 07/26/10 17:51 /ljl
Collection Date: 07/15/10 07:50
DateReceived: 07/16/10
MCW
QCl Method Analysis Date 1 By
A4500-CIB 07/20/10 15:38/1r
E353.2 07/26/10 17:54 /ljl
Collection Date: 07/14/10 14:22
DateRecelved: 07/16/10
MCW
QCl Method Analysis Date 1 By
07/20/10 15:39 IIr
Collection Date: 07/13/1008:39
DateReceived: 07/16/10
MCW
QCl Method Analysis Date 1 By
07/20/10 15:41 Ilr
07/26/10 17:59 /ljl
MCL -Maximum contaminant level.
ND -Not detected at the reporting limit.
Page 13 of 21
EN:RGY
/ Ht J/\ '_'1o.J ~
www.energylab.com
AMI!fIaI EluIIJIIct SJnu ,m Halenl, MT B77-472-0111 • Billings, MT BOO-735-44B9 • Casper, WY 88B-235-0515
Gillette, WY BBB-BBB-7175 • Rapid City, SD BBB-872-1225 • College Slatlon, 1X BBB-69D-2218
LABORATORY ANALYTICAL REPORT
Client: Denison Mines USA Corp
Site Name: 3rd Quarter Nitrate and Chloride
LablD: C 10070624-041
Client Sample ID: Temp Blank
Matrix: Aqueous
Analyses
PHYSICAL PROPERTIES
Temperature
Report Rl -Analyte reporting limit.
Definitions: QCl -Quality control limit.
Result Units
3.0
Qualifiers RL
MCU
Report Date: 07/28/10
Collection Date: 07/15/10
DateRecelved: 07/16/10
QCL Method Analysis Date 1 By
E170.1 07/16/10 09:051 kbh
MCl -Maximum contaminant level.
NO -Not detected at the reporting limit.
Page 14 of 21
Er\ERGY
t AHOI1;'\l ~1"'ll .-
www.energylab.com
AuI!tkaI bRIIIiH:I Stna 1m
Halana, MT 877-472-0711 • Billings, MT 800-135"'"89 • Caspar, WV 888-235-0515
Gillette, WV 886-186-1175 • Rapid City, SD 888-112-1225 • College Station, TX 888-690-2218
QA/QC Summary Report
Client: Denison Mines USA Corp Report Date: 07/28/10
Project: 3rd Quarter Nitrate and Chloride Work Order: C10070624
Analyte Count Result Units RL %REC Low Limit High Limit RPO RPOLimit Qual
Method: A4S00-CI B Batch: 100720-CL-TTR-W
Sample 10: MBLK9-100720 Method Blank Run: TITRATION_100720A 07/20/10 11:10
Chloride ND mglL 0.4
Sample 10: C10061049-o01AMS Sample Matrix Spike Run: TITRATION_100720A 07/20/1011 :40
Chloride 37.9 mglL 1.0 99 90 110
Sample 10: C10061049-001AMSO Sample Matrix Spike Duplicate Run: TITRATION_100720A 07/20/10 11 :42
Chloride 38.2 mglL 1.0 100 90 110 0.9 10
Sample 10: C10070624-014AMS Sample Matrix Spike Run: TITRATION_100720A 07/20/1012:05
Chloride 35.4 mgIL 1.0 100 90 110
Sample 10: C10070624-014AMSO Sample Matrix Spike Duplicate Run: TITRATION_100720A 07/20/10 12:06
Chloride 35.8 mg/L 1.0 101 90 110 10
Sample 10: LCS35-100720 Laboratory Control Sample Run: TITRATION_100720A 07/20/1012:09
Chloride 3610 mglL 1.0 102 90 110
Sample 10: C10070624-024AMS Sample Matrix Spike Run: TITRATION_100720A 07/20/1014:29
Chloride 109 mg/L 1.0 102 90 110
Sample 10: C10070624-024AMSO Sample Matrix Spike Duplicate Run: TITRATION_100720A 07/20/1014:30
Chloride 107 mglL 1.0 100 90 110 1.6 10
Sample 10: C10070624-034AMS Sample Matrix Spike Run: TITRATION_100720A 07/20/1015:09
Chloride 116 mgIL 1.0 102 90 110
Sample 10: C10070624-034AMSO Sample Matrix Spike Duplicate Run: TITRATION_l 00720A 07/20/10 15:11
ChlOride 116 mg/L 1.0 101 90 110 0.8 10
Sample 10: C10070624-040AMS Sample Matrix Spike Run: TITRATION_100720A 07/20/1015:43
Chloride 109 mg/L 1.0 100 90 110
Sample 10: C10070624-040AMSO Sample Matrix Spike Duplicate Run: TITRATION_l 00720A 07/20/1015:44
Chloride 110 mgIL 1.0 101 90 110 0.8 10
QualHiers:
RL -Analyte reporting limit. ND -Not detected at the reporting limit.
Page 15 of 21
EI\ERGY
, /,:"1_::!li\,I C.fll! 'I rmr www.energylab.com
AM1IIaI~stm:. '151 Helens, MT 877·472-0711 • Billinl!, MT 800·135·4489 • Casper, WY 888·235-0515
Gillette, WY 888-888-7175 • Rapid City, SD 888-812·1225 • Collage Station, IX 888·690-2218
QA/QC Summary Report
Client: Denison Mines USA Corp
Project: 3rd Quarter Nitrate and Chloride
Analyte Count Result Units
Method: E353.2
Sample 10: MBLK-1 Method Blank
Nitrogen, Nitrate+Nitrite as N NO mg/L
Sample 10: LCS-2 Laboratory Control Sample
Nitrogen, Nitrate+Nitrite as N 2.56 mglL
Sample 10: C10070624-005BMS Sample Matrix Spike
Nitrogen, Nitrate+Nitrite as N 1.98 mglL
Sample 10: C10070624-005BMSO Sample Matrix Spike Duplicate
Nitrogen, Nitrate+Nitrite as N 1.99 mglL
Sample 10: C10070624-015BMS Sample Matrix Spike
Nitrogen, Nitrate+Nitrite as N 2.00 mglL
Sample 10: C10070624-015BMSO Sample Matrix Spike Duplicate
Nitrogen, Nitrate+Nitrite as N 2.01 mglL
Sample 10: C10070624-025BMS Sample Matrix Spike
Nitrogen, Nitrate+Nitrite as N 2.70 mglL
Sample 10: C10070624-025BMSO Sample Matrix Spike Duplicate
Nitrogen, Nitrate+Nitrite as N 2.74 mg/L
Sample 10: C10070624-031BMS Sample Matrix Spike
Nitrogen, Nitrate+Nitrite as N 3.12 mg/L
Sample 10: C10070624-031BMSO Sample Matrix Spike Duplicate
Nitrogen, Nitrate+Nitrite as N 3.14 mg/L
Qualifiers:
RL
0.03
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
Report Date: 07/28/10
Work Order: C10070624
%REC Low Limit High Limit RPO RPOLlmlt Qual
Batch: R135289
Run: TECHNICON_l00726A 07/26/1014:49
Run: TECHNICON_l00726A 07/26/10 14:51
102 90 110
Run: TECHNICON_l 00726A 07/26/10 15:44
99 90 110
Run: TECHNICON_l00726A 07/26/10 15:46
100 90 110 0.5 10
Run: TECHNICON_l00726A 07/26/10 16:24
98 90 110
Run: TECHNICON_l00726A 07/26/10 16:26
98 90 110 0.5 10
Run: TECHNICON_l 00726A 07/26/10 17:01
101 90 110
Run: TECHNICON_l 00726A 07/26/10 17:04
103 90 110 1.5 10
Run: TECHNICON_l 00726A 07/26/1017:41
93 90 110
Run: TECHNICON_l 00726A 07/26/10 17:44
94 90 110 0.6 10
RL • Anafyle reporting limit. NO • Not detected at the reporting limit.
Page 16 of 21
EN:RGY
..... 1 _ J/ I •
www.energylab.com
AItI/ffIaIrmn.-~ '111
Helena, MT 877-472-0711 • Billings, MT 800-735-4489 . Casper, W'f 888-235-0515
Gillette, WY 888-188-7175 • Rapid City, SD 118-172-1225 • Col/oga SlaUon, TX 888-S8D-2218
Workorder Receipt Checklist
Denison Mines USA Corp
II~IIIIIIIII~ III~ IIIIIIIII~II ~IIIIIIIIII ~I
C10070624
Login completed by: Diane Downing
Re'Viewed by: BL2000\kschroeder
Re'Viewed Date: 7/19/2010
Shipping container/cooler in good condition?
OJstody seals intact on shipping container/cooler?
OJstody seals intact on sarrple bottles?
O1ain of custody present?
O1ain of custody signed w hen relinquished and received?
O1ain of custody agrees w ith sarrple labels?
Sarrples in proper container/bottle?
Sarrple containers Intact?
Sufficient sarrple volume for Indicated test?
All sarrples received within holding time?
ContainerfTerrp Blank terrperature:
Water -VOA vials have zero headspace?
Water -pH acceptable upon receipt?
Contact and Corrective Action Cornrents:
None
Yes 0
Yes 0
Yes 0
Yes 0
Yes 0
Yes 0
Yes 0
Yes 0
Yes 0
Yes 0
3'C On k:e
Yes 0
Yes 0
f\t)D
f\t)D
f\t)D
f\t)D
f\t)D
f\t)D
f\t)D
f\t)D
f\t)D
f\t)D
Page 17 of 21
Date Received: 7/16/2010
Received by: ha
Carrier name: FedEx
f\t)t Present 0
f\t)t Present 0
f\t)t Present 0
f\t) VOA vials subrritted 0
f\t)t Applicable 0
-0 Q) cc
CD
ex>
0 ....
I\.)
--"
""(~.7 Chain of Custody and Analytical Request Record Page~l_ of 1....
--~ MMI''''8--
Company Name:O ' ' M~,.~
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Report Mail Address: ~() Sl:>'X &'0'\
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Visit our web site at www.eneraylab.com for additional Information, downloadable fee schedule. forms. and links.
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Sample Disposal: Return to Client l ab 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 site at www.energylab.com for additional information, downloadable fee schedule. forms, and links.
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Received by (print): 08lelTlme: -Signature:
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.
EI\ERGY
l .\1,,)1,: I r:1 J/ •
August04,2010
Denison Mines USA Corp
6425 S Hwy 191
Blanding, UT 84511
Workorder No.: C10070876
Helena, MT 877-472-0711 • BIllings, MT 801-735-4489 • Casper, WY 888-235-0515
Gillette, WY 818-888-7175 • Rapid City, SD 88B-m-1225 • Collage Station, 1X 888-680-2218
ANAL VTICAL SUMMARY REPORT
Quote ID: C3317 -Nitrate and Chloride Sampling
Project Name: 3rd Quarter Nitrate and Chloride
Energy Laboratories, Inc. received the following 5 samples for Denison Mines USA Corp on 7/23/2010 for analysis.
Sample ID Client Sample ID Collect Date Receive Date Matrix Test
C 1 0070876-001 UWLP 07/19/10 13 :08 07/23/10 Aqueous Chloride
Nitrogen, Nitrate + Nitrite
C 10070876-002 Piez 1 07/19/10 11 :38 07/23/10 Aqueous Same As Above
C10070876-003 Piez2 07/19/10 12:19 07/23/10 Aqueous Same As Above
C 1 0070876-004 Piez 3 07/19/10 12:40 07/23/10 Aqueous Same As Above
C 10070876-005 Pond D 07/19/10 13:08 07/23/10 Aqueous Same As Above
This report was prepared by Energy Laboratories, Inc., 2393 Salt Creek Hwy., Casper, WY 82601 . Any exceptions
or problems with the analyses are noted in the Laboratory Analytical Report, the QA/QC Summary Report, or the
Case Narrative.
The results as reported relate only to the item(s) submitted for testing.
If you have any questions regarding these test results, please call.
Report Approved By: c3¥~ £) tJcJ.~
Reporting Supervisor
Digitally signed by
Stephanie Waldrop
Date: 2010.08.06 10:25:52 -06:00
Page 1 of 8
www.ener&Yiab.com
AIIIIytaI~ .. lID
Helena, MT 817-472-D111 • Billings, MT 80D-735-4489 • Casper, WY 888-235-D515
Gillette WY 8&6-686-1115 • Ra Id CI SD 888-872-1225 • Coile e Station TX 888-&90-2218
CLIENT: Denison Mines USA Corp
Project: 3rd Quarter Nitrate and Chloride Report Date: 08/04/10
Sample Delivery Group: C10070876 CASE NARRATIVE
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.
SOIUSOLID SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE, SIMAZINE AND PCB ANALYSIS
Data for PCBs, Atrazine and Simazine are reported from EPA 525.2. PCB data reported by ELI 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: 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 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.
Page 2 of 8
EN:RGY
I -'\\C, , 1-":; • J •
www.energylab.com
AI/IIfIIaI EIuI1Nct ShJu 1161
Helena, MT 877-472-0711 • Billings, MT 801-735-4419 • Casper, WY 888-235-0515
Gilletta, WY 118-&88-7175 • Rapid City, SD 188-172-1225 • College Slatlon, TX 888-690-2211
LABORATORY ANALYTICAL REPORT
Client: Denison Mines USA Corp
Site Name: 3rd Quarter Nitrate and Chloride
Lab ID: C10070876-001
Client Sample ID: UWLP
Matrix:
Analyses
MAJOR IONS
Chloride
Aqueous
Nitrogen, Nitrate+Nitrite as N
LabID: C 10070876-002
Client Sample ID: Piez 1
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
LabID: C10070876-003
Client Sample ID: Plez2
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab ID: C10070876-004
Client Sample ID: Piez 3
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Report Rl -Analyte reporting limit.
Definitions: QCl -Quality control limit.
Result Units
NO mg/l
NO mg/l
Result Units
52
6.8
Result
8
0.6
Result
35
1.8
mg/l
mg/l
Units
mg/l
mg/l
Units
mg/l
mg/l
o -Rl increased due to sample matrix.
Qualifiers
Qualifiers
o
Qualifiers
Qualifiers
0
Rl
1
0.1
Rl
0.5
Rl
0.1
Rl
0.2
Report Date: 08/04/10
Collection Date: 07/19/10 13 :08
DateReceived: 07/23/10
MCll
QCl Method Analysis Date I By
MCll
A4500-CI B 08/03/10 15:23/1r
E353.2 07/28/10 18:55/1jl
Collection Date: 07/19/10 11 :38
DateReceived: 07/23/10
QCl Method AnalysiS Date I By
A4500-CI B 08/03/10 15:26/1r
E353.2 07/28/10 19:05/1jl
Collection Date: 07/19/1012:19
Date Received : 07/23/10
MCll
QCl Method Analysis Date I By
A4500-CI B 08/03/10 15:2911r
E353.2 07/28/10 19:07 /ljl
Collection Date: 07/19/10 12:40
Date Received : 07/23/10
MCU
QCl Method Analysis Date I By
A4500-CI B 08/03/10 15:32 Ilr
E353.2 07/28/10 19:10 IIjl
MGl -Maximum contaminant level.
NO -Not detected at the reporting limit.
Page 3 of 8
EN:RGY
I ,\P 'H/'d( PI "
www.energylab.com
AMIytIaI £ituIIIIIa Sb1a 1m
Helena, MT 877-472-0711 • Billings, MT 80D-735-4489 • Casper, WY 888-235-0515
Glllatta,"NY 8IS-68B-7175 • Rapid City, SD 888-112-1225 • College Siallon, TX 888-&90-2218
LABORATORY ANALYTICAL REPORT
Client: Denison Mines USA Corp
Site Name: 3rd Quarter Nitrate and Chloride
LabID: C10070876-005
Client Sample 10: Pond D
Matrix:
Analyses
MAJOR IONS
Chloride
Aqueous
Nitrogen, Nitrate+Nitrite as N
Report Rl -Analyte reporting limit.
Definitions: QCl -Quality control limit.
Result Units
NO mg/l
NO mg/l
Qualifiers Rl
0.1
MCll
Report Date: 08/04/10
Collection Date: 07/19/1013:08
DateReceived: 07/23/10
QCl Method Analysis Date I By
A4500-CI B 08/03/10 15 :35 /lr
E353.2 07/28/10 19:12/1jl
MCl -Maximum contaminant level.
ND -Not detected at the reporting limit.
Page 4 of 8
EI\ERGY
I I'd H)I~~"'l (:.<'1 •
www.energytab.com
MI/yfIaI EluIIIia SItu llU
Haiena, MT 877-472-0711 • Billings, MT 800-735-4489 • Caspar, WY 888-235-0515
Gillette, WY 888-688·7175 . Rapid City, SD 888-&12-1225 • Collega Station, 1X 888-690-2218
QA/QC Summary Report
Client: Denison Mines USA Corp
Project: 3rd Quarter Nitrate and Chloride
Report Date: 08/04/10
Work Order: C10070876
Analyte
Method: A4500-CI B
Sample 10: MBLK9-10OS03
Chloride
Sample 10: C1007OS78-004A
Chloride
Sample 10: C1007OS78-004A
Chloride
Sample 10: LCS35-10OS03
Chloride
Qualifiers:
RL -Analyte reporting limit.
Count Result Units RL %REC Low Limit High Limit
Method Blank Run: TITRATION_100803A
ND mg/L 0.4
Sample Matrix Spike Run: TITRATION_100803A
233 mg/L 1.0 102 90 110
Sample Matrix Spike Duplicate Run: TITRATION_100803A
235 mg/L 1.0 103 90 110
Laboratory Control Sample Run: TITRATION_1 00803A
3540 mg/L 1.0 100 90 110
ND -Not detected at the reporting limit.
Page 5 of 8
RPO RPDLlmlt Qual
Batch: 100803-CL-TTR-W
08/03/10 15:06
08/03/1 0 15 :41
08/03/10 15:43
0.7 10
08/03/10 15:46
EN:RGY
, t\H, >1 ..... , ('III' .~
www.energylab.com
AMI/fJaI EBIIwa SbIu 1HZ
Helena, lIT 871-472-0711 • Billings, MT BOD-735-4489 • Caspar, WY 888-235-0515
Gillatte, WY 81&-188-7175 • Rapid City, SD 888-112-1225 • College Station,1X 8B8-69D-2218
QA/QC Summary Report
Client: Denison Mines USA Corp
Project: 3rd Quarter Nitrate and Chloride
Analyle Count Result Units
Method: E353.2
Sample 10: MBLK-1
Nitrogen, Nitrate+Nitrite as N
Sample 10: LCS-2
Nitrogen, Nitrate+Nitrite as N
Sample 10: C10070876-001BMS
Nitrogen, Nitrate+Nitrite as N
Sample 10: C10070876-001BMSO
Nitrogen, Nitrate+Nitrite as N
Qualifiers:
Method Blank
ND mglL
Laboratory Control Sample
2.50 mg/L
Sample Matrix Spike
2.00 mg/L
Sample Matrix Spike Duplicate
1.95 mg/L
RL
0.04
0.10
0.10
0.10
Report Date: 08/04/10
Work Order: C 1 0070876
%REC Low Limit High LImIt RPO RPOLimit Qual
Batch: R135434
Run: TECHNICON_10072BA 07/2B/10 16:45
Run: TECHNICON_1 0072BA 07/2B/10 16:47
100 90 110
Run: TECHNICON_10072BA 07/2B/10 1B:57
100 90 110
Run: TECHNICON_10072BA 07/2B/10 19:00
9B 90 110 2.5 10
RL -Analyte reporting limit. ND -Not detected at the reporting limit.
Page 6 of 8
EN:RGY
1\"11 'II ,"I ' 'In-•
www.energylab.com
Au/JfIaI EJwIIIIu:t SInu I.
Helena, MT 877-472-0711 • BIllings, MT 800-735-4489 • Casper, WY 888-235-0515
Gillatta, WY 188-888-7175 • Rapid City, SD 888-872-1225 • College Station, IX 88a-Blo-m a
Workorder Receipt Checklist
IIIIIIIIIIII illlllill 11111 1111 111111111111111 III 1111
Denison Mines USA Corp C10070876
Login completed by: Edith McPike Date Received : 7/23/2010
Reviewed by: BL2000\tedwards Received by: tae
Reviewed Date: 7/27/2010 Carrier name: Fed Ex
Shipping container/cooler in good condition? Yes 0' No 0 Not Present 0
Custody seals intact on shipping container/cooler? Yes 0' No 0 Not Present 0
Custody seals intact on sample bottles? Yes 0 No 0 Not Present 0'
Chain of custody present? Yes 0' No 0
Chain of custody signed when relinquished and received? Yes 0' No 0
Chain of custody agrees with sample labels? Yes 0' No 0
Samples in proper container/bottle? Yes 0' No 0
Sample containers intact? Yes 0' No 0
Sufficient sample volume for indicated test? Yes 0' No 0
All samples received within holding time? Yes 0' No 0
ContainerfTemp Blank temperature: 2°C On Ice
Water -VOA vials have zero headspace? Yes 0 No 0 No VOA vials submitted 0'
Water -pH acceptable upon receipt? Yes 0' No 0 Not Applicable 0
-------------------------------------------------------------------------------------------------------------------
Contact and Corrective Action Comments:
None
Page 7 of 8
-0 OJ <C CD
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""'feY letw,,,.'.' Chain of Custody and Analytical Request Record Page -L of -I--
Com
State:
Email:
~:rr ?.-;?;7
Purchase Order:
Contact ELI prior to ~ ~ W@[J@ OOrn®DD~§[ID .. a "-RUSH sample submittal
"'0 ~
Special Report/Formats:
Dow
DpOTWNfWTP o State: D Other:----
7
8
9
10
~ fI)&:' coo;gOI ;p 0 "3>a3 ~1ij W o EOO/EOT(Electronic Data) §Cf)]! gj ~ I
Format: u~~~I~ C,,)
o LEVEL IV ~ lD~~ i§ 4: ~
D NELAC i~'i~ ~ « zl<l~at3l~ W
W en
Return to CWent:
[ R for charges and
scheduling -See
Instruction
"0 c: Comments: e U
aJ c: :;
l-S "0 ... aJ "0 r::: .l!! H en
In certain circumstances, samples submitted to Energy Laboratories, Inc. may be subcontracted to other certified laboratories in order to comolRtA
This serves as notice of this possibility. All sub-contract data will be cleariy notated on your analytical report.
Visit our web site at www.energylab.com for additional information, downloadable fee schedule, forms, and links.
Z-°e
On lea: N
Custody Seal d~ On BaIlIe
00 Cooler
Intact
EN:RGY
1 1\1 \\ )'.',\1 elll' ~
www.energylab.com
-.IElWlMl:lSIm:t 1m
Helena, MT 817·472·0711 • Billings, MT 800·735-4489 . Casper, WY 888·231-0515
Glilotte, WY 8&8·18&·7175 • Rapid City, SD 888·172·1225 • College Stalion, lX 888-690-2218
October 19, 2010
Denison Mines USA Corp
6425 S Hwy 191
Blanding, UT 84511
Workorder No.: C10091262
Project Name: 3rd Quarter Nitrate
ANALYTICAL SUMMARY REPORT
Quote ID: C3317 -Nitrate and Chloride Sampling
Energy Laboratories, Inc. received the following 18 samples for Denison Mines USA Corp on 9/30/2010 for analysis.
Sample ID Client Sample ID Collect Date Receive Date Matrix Test
C10091262-001 TWN13 09/27/10 08:26 09/30/10 Aqueous Chloride
Nitrogen, Nitrate + Nitrite
C 10091262-002 TWN 1 09/27/1009:35 09/30/10 Aqueous Same As Above
C10091262-003 TWN4 09/27/10 10:32 09/30/10 Aqueous Same As Above
C10091262-004 TWN16 09/27/10 12 :28 09/30/10 Aqueous Same As Above
C 1 0091262-005 TWN 11 09/27/10 13:26 09/30/10 Aqueous Same As Above
C10091262-006 TWN18 09/27/1014:2409/30/10 Aqueous Same As Above
C10091262-007 TWN19 09/29/10 07:42 09/30/10 Aqueous Same As Above
C10091262-008 TWN2 09/29/10 07:55 09/30/10 Aqueous Same As Above
C10091262-009 TWN65 09/27/10 13:26 09/30/10 Aqueous Same As Above
C1 0091262-01 0 TWN 13R 09/27/10 07:56 09/30/10 Aqueous Same As Abbve
C10091262-011 TWN1R 09/27/1008:57 09/30/10 Aqueous Same As Above
C10091262-012 TWN4R 09/27/10 10:05 09/30/10 Aqueous Same As Above
C10091262-013 TWN 16R 09/27/10 11 :05 09/30/10 Aqueous Same As Above
C10091262-014 TWN 11R 09/27/10 13:00 09/30/10 Aqueous Same As Above
C10091262-015 TWN 18R 09/27/1014:0209/30/10 Aqueous Same As Above
C10091262-016 TWN 19R 09/28/10 07:48 09/30/10 Aqueous Same As Above
C10091262-017 TWN2R 09/28/1008:47 09/30/10 Aqueous Same As Above
C10091262-018 Temp Blank 09/28/10 00:00 09/30/10 Aqueous Temperature
This report was prepared by Energy Laboratories, Inc., 2393 Salt Creek Hwy., Casper, WY 82601. Any exceptions
or problems with the analyses are noted in the Laboratory Analytical Report, the QAlQC Summary Report, or the
Case Narrative.
The results as reported relate only to the item(s) submitted for testing.
If you have any questions regarding these test results, please call.
Report Approved By: c3¥~ £) tJcJ.~
Reporting Supervisor
Digitally signed by
Stephanie Waldrop
Date: 2010.10.1911:06:03 -06:00
Page1of12
EN:RGY (~ www.energylab.com Helena, MT 877-472-0711 • Billings, MT 800-135-4489 • Casper, WY 888-235-0515
I : "~?I\I~_ ~,~, (;-bII/ffIrII EIA/Iwu;I SIncI 'lSI Gillette WY 868-186-7175 • Ra Id C SD 888-612-1225 • Colle c Station IX 888-690-2218
CLIENT: Denison Mines USA Corp
Project: 3rd Quarter Nitrate Report Date: 10/19/10
Sample Delivery Group: C10091262 CASE NARRATIVE
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.
SOIUSOLID SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE, SIMAZINE AND PCB ANALYSIS
Data for PCBs, Atrazine and Simazine are reported from EPA 525.2. PCB data reported by ELI 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: WY00002, Radiochemical WY00937; FL-DOH NELAC: E87641, Radiochemical E871 017; 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.
Page 2 of 12
EI\ERGY
l I\l:lcH~/\1 f)f~H "
www.energylab.com
AI1IIyIbI £mIIIIIl:I SInr. 1m Helena, MT 877-472-0J11 • Bllllnls, MT 800-135-4489 . Casper, WY 888-235-0515
GIIIBH., WY 886-188-7175 • Rapid City, SO 888-172-1225 • Collage Station, TX 888-690-2218
LABORATORY ANALYTICAL REPORT
Client:
Site Name:
Denison Mines USA Corp
3rd Quarter Nitrate
Lab ID: C10091262-001
Client Sample ID: TWN 13
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab ID: C10091262-002
Client Sample ID: TWN 1
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab ID: C10091262-003
Client Sample 10: TWN 4
Matrix:
Analyses
MAJOR IONS
Chloride
Aqueous
Nitrogen, Nitrate+Nitrite as N
Lab ID: C10091262-004
Client Sample ID: TWN 16
Matrix:
Analyses
MAJOR IONS
Chloride
Aqueous
Nitrogen, Nitrate+Nitrite as N
Report RL -Analyte reporting limit.
Definitions: QCL -Quality control limit.
Result Units
53 mg/L
0.2 mg/L
Result Units
19 mg/L
0.6 mg/L
Result Units
19 mg/L
0.9 mg/L
Result Units
35 mg/L
2.6 mg/L
Qualifiers
Qualifiers
Qualifiers
Qualifiers
Rl
1
0.1
Rl
,
0.1
Rl
0.1
Rl
1
0.1
Report Date: 10/19/10
Collection Date: 09/27/1008:26
DateReceived: 09/30/10
MCU
QCl Method Analysis Date I By
A4500-CI B 10/13/10 11 :29 1 Ir
E353.2 10/14/10 13:231 de
Collection Date: 09/27/1009:35
DateReceived: 09/30/10
MCU
QCl Method Analysis Date I By
MCll
A4500-CI B 10/13/10 11 :32 Ilr
E353.2 10/14/10 13:25 I de
Collection Date: 09/27/1010:32
DateReceived: 09/30/10
QCl Method Analysis Date I By
MCU
A4500-CI B 10/13/10 11 :33 Ilr
E353.2 10/14/10 13:351 de
Collection Date: 09/27/10 12:28
DateReceived: 09/30/10
QCl Method Analysis Date I By
A4500-CI B 10/13/10 11 :35 IIr
E353.2 10/14/1013:381 de
MCL -Maximum contaminant level.
NO -Not detected at the reporting limit.
Page 3 of 12
EN:RGY
I J .-: )i ,\ I ..J' " "';;
www.energylab.com
ARIITbJ EIuIIMI:I SIna 1m
Helena, MT 877-472-0711 • 81111nl5, MT 800-135-4489 • Casper, WY 888-235-0515
Gillette, WY 888-188-7175 • Rapid City, SD 888-172-1225 • Collaga Stallon, lX 888-890-2218
LABORATORY ANALYTICAL REPORT
Client:
Site Name:
Denison Mines USA Corp
3rd Quarter Nitrate
Lab ID: C10091262-005
Client Sample ID: TWN 11
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab ID: C10091262-006
Client Sample ID: TWN 18
Matrix:
Analyses
MAJOR IONS
Chloride
Aqueous
Nitrogen, Nitrate+Nitrite as N
Lab ID: Cl0091262-007
Client Sample ID: TWN 19
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab ID: C10091262-008
Client Sample ID: TWN 2
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Report RL -Analyte reporting limit.
Definitions: QCL -Quality control limit.
Result Units
76 mg/L
1.4 mg/L
Result Units
64 mg/L
1.8 mg/L
Result Units
113 mg/L
7.2 mg/L
Result Units
104 mg/L
69 mg/L
D -RL increased due to sample matrix.
Qualifiers
Qualifiers
Qualifiers
D
Qualifiers
D
Rl
1
0.1
Rl
0.1
Rl
0.2
Rl
2
Report Date: 10/19/10
Collection Date: 09/27/1013:26
DateRecelved: 09/30/10
MCll
QCl Method Analysis Date I By
A4500-CI B 10/13/10 11 :52/1r
E353.2 10/14/10 13:40 I dc
Collection Date: 09/27/10 14:24
DateReceived: 09/30/10
MCU
QCl Method Analysis Date I By
MCll
A4500-CI B 10/13/10 11 :54/1r
E353.2 10/14/10 13:431 dc
Collection Date: 09/29/10 07:42
DateRecelved: 09/30/10
QCl Method Analysis Date I By
MCU
A4500-CI B 10/13/10 11 :58/1r
E353.2 10/14/10 13:451 dc
Collection Date: 09/29/10 07:55
DateRecelved: 09/30/10
QCl Method Analysis Date I By
A4500-CI B 10/13/10 12:00 Ilr
E353.2 10/18/1013:10 Iljl
MCL -Maximum contaminant level.
ND -Not detected at the reporting limit.
Page 4 of 12
EN:RGY
I I\HOH/\ I 81 .... 1[ .. ~
www.energylab.com
AIMI1fIi:II ElnIIwIu SII/U 1m
Helen., MT 877-472-0711 • BIllings, MT 800-735-4489 • Casper, WY 888-235-0515
Gillette, WY 886-188-7175 • Rapid City, SO 888-872-1225 • College Slation, TX 888-690-2218
LABORATORY ANALYTICAL REPORT
Client:
Site Name:
Denison Mines USA Corp
3rd Quarter Nitrate
Lab ID: Cl0091262-009
Client Sample ID: TWN 65
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab ID: Cl 0091262-01 0
Client Sample ID: TWN 13R
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab ID: Cl0091262-011
Client Sample ID: TWN 1 R
Matrix:
Analyses
MAJOR IONS
Chloride
Aqueous
Nitrogen, Nitrate+Nitrite as N
Lab ID: Cl0091262-012
Client Sample ID: TWN 4R
Matrix:
Analyses
MAJOR IONS
Chloride
Aqueous
Nitrogen, Nitrate+Nitrite as N
Report RL -Analyte reporting limit.
Definitions: QCL -Quality control limit.
Result Units
80 mg/L
1.4 mg/L
Result Units
NO mg/L
NO mg/L
Result Units
NO mg/L
NO mg/L
Result Units
NO mg/L
NO mg/L
Qualifiers
Qualifiers
Qualifiers
Qualifiers
Rl
0.1
Rl
1
0.1
RL
0.1
Rl
0.1
Report Date: 10/19/10
Collection Date: 09/27/1013:26
DateReceived: 09/30/10
MCll
QCl Method Analysis Date 1 By
A4500-CI 8 10/13/10 12:06 Ilr
E353.2 10/14/10 13:551 dc
Collection Date: 09/27/10 07:56
DateRecelved: 09/30/10
MCU
QCl Method Analysis Date 1 By
MCU
A4500-CI B 10/13/10 12:0B/lr
E353.2 10/14/10 13:58/dc
Collection Date: 09/2711008:57
DateReceived: 09/30/10
QCL Method Analysis Date 1 By
MCU
A4500-CI B 10/13/10 12:10 /lr
E353.2 10/14/1014:001 dc
Collection Date: 09/27/10 10:05
DateRecelved: 09/30/10
QCl Method Analysis Date 1 By
A4500-CI B 10/13/10 12:14 /lr
E353.2 10/14/1014:031 dc
MCL -Maximum contaminant level.
NO -Not detected at the reporting limit.
Page 5 of 12
EN:RGY
I /'I de r· {-., _)'"IL~
www.energylab.com
AIIIIftItM ~ShJa 'lIZ
Helena, MT 877-472-0111 • Billings, MT 800·135-4489 • Casper, WY 888-H5-0515
Gillette, WV 888·188·7175 . Rapid City, SO 888-872-1225 • College Slation,lX 888-890-2218
LABORATORY ANALYTICAL REPORT
Client:
Site Name:
Denison Mines USA Corp
3rd Quarter Nitrate
Lab 10: C10091262·013
Client Sample 10: TWN 16R
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Lab 10: C10091262-014
Client Sample 10: TWN 11 R
Matrix:
Analyses
MAJOR IONS
Chloride
Aqueous
Nitrogen, Nitrate+Nitrite as N
Lab 10: C10091262-015
Client Sample 10: TWN 18R
Matrix:
Analyses
MAJOR IONS
Chloride
Aqueous
Nitrogen, Nitrate+Nitrite as N
Lab 10: C10091262-016
Client Sample 10: TWN 19R
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nitrogen, Nitrate+Nitrite as N
Report Rl -Analyte reporting limit.
Definitions: QCL -Quality control limit.
Result Units
NO mg/L
NO mg/L
Result Units
NO mg/L
NO mg/l
Result Units
NO mg/L
NO mg/l
Result Units
NO mg/l
NO mg/l
Qualifiers
Qualifiers
Qualifiers
Qualifiers
RL
0.1
RL
,
0.1
RL
1
0.1
RL
1
0.1
Report Date: 10/19/10
Collection Date: 09/27/1011 :05
DateReceived: 09/30/10
MCLI
QCL Method Analysis Date I By
A4500-CI B 10/13/10 12:15 IIr
E353.2 10/14/10 14:131 de
Collection Date: 09/27/10 13:00
DateReceived: 09/30/10
MCU
QCL Method Analysis Date I By
MCU
A4500-C18 10/13/1012:17 IIr
E353.2 10/14/1014:151 de
Collection Date: 09/27/1014:02
DateReceived: 09/30/10
QCL Method Analysis Date I By
MCU
A4500-CI B 10/13/10 12:30 Ilr
E353.2 10/14/10 14:181 de
Collection Date: 09/28/10 07:48
DateReceived: 09/30/10
QCL Method Analysis Date I By
A4500-CI 8 10/13/10 12:32 IIr
E353.2 10/14/10 14:20 1 de
MCl -Maximum contaminant level.
NO -Not detected at the reporting limit.
Page 6 of 12
EN:RGY
, "I40HAl '--'I~I' <;
www.en&rgylab.com
AnI1fIaI~smu 711Z
Helen., MT 877-472-0711 • Billinl!, MT 800-135-4489 • Casper, WY 888-235-0515
Gillette, WY 888-188-7175 • Rapid City, SD 888-872-1225 • College Slatlon, 1X 888-690-2218
LABORATORY ANALYTICAL REPORT
Client:
Site Name:
Denison Mines USA Corp
3rd Quarter Nitrate
Lab 10: C10091262-017
Client Sample ID: TWN 2R
Matrix: Aqueous
Analyses
MAJOR IONS
Chloride
Nilrogen, Nitrate+Nitrite as N
LablD: C10091262-018
Client Sample 10: Temp Blank
Matrix: Aqueous
Analyses
PHYSICAL PROPERTIES
Temperature
Report RL -Analyte reporting limit.
Definitions: QCl -Quality control limit.
Result Units
NO mg/l
NO mg/l
Result Units
3.0
Qualifiers Rl
0.1
Qualifiers Rl
Mell
Report Date: 10/19/10
Collection Date: 09/28/10 08:47
DateReceived: 09/30/10
Qel Method Analysis Date 1 By
MeL!
A4500-CI B 10/13/10 12:33 Ilr
E353.2 10/14/10 14:231 dc
Collection Date: 09/28/10
DateRecelved: 09/30/10
Qel Method Analysis Date 1 By
E170.1 09/30/10 09:00 1 kbh
MCl -Maximum contaminant level.
NO -Not detected at the reporting limit.
Page 7 of 12
EN:RGY
l AHOIU\''-.JI..,III '.J
www.energylab.com
~ElRllwlustnc. ,.
Helena, MT 877-472-0711 • Billings, MT 8011-135-4489 • Casper, WY 888-235-0515
Gillette, WY 888-188-7175 • Rapid City, SD 888-172-1 U5 • Collage Slation, IX 888-690-2218
QA/QC Summary Report
Client: Denison Mines USA Corp
Project: 3rd Quarter Nitrate
Analyte Count Result Units
Method: A4500-CI B
Sample 10: MBLK9-10/13/2010
Chloride
Sample 10: C10091262-G04AMS
Chloride
Sample 10: C10091262-G04AMSO
Chloride
Sample 10: C10091262-G09AMS
Chloride
Sample 10: C10091262-G09AMSO
Chloride
Sample 10: LCS35-10/13/2010
Chloride
Qualifiers:
RL -Analyte reporting limit.
Method Blank
NO mg/L
Sample Matrix Spike
71 .6 mg/L
Sample Matrix Spike Duplicate
71.2 mg/L
Sample Matrix Spike
259 mg/L
Sample Matrix Spike Duplicate
257 mg/L
Laboratory Control Sample
3580 mg/L
Report Date: 10/19/10
Work Order: C10091262
RL %REC Low limit High Limit RPO RPOLimit Qual
Batch: 10/13/2010-CL-TTR-W
Run: TITRATION_l 01 013A 10/13/1011 :14
0.5
Run: TITRATION_101013A 10113/1011 :36
1.0 102 90 110
Run: TITRATION_101013A 10/13/10 11 :38
1.0 101 90 110 0.5 10
Run: TITRATION_l 01 013A 10/13/1012:19
1.0 101 90 110
Run : TITRATION_l 01 013A 10/13/10 12:21
1.0 100 90 110 0.7 10
Run: TITRATION_101013A 10/13/10 12:23
1.0 101 90 110
NO -Not detected at the reporting limit.
Page 8 of 12
EN:RGY
I "HCH~I\I -::l1--lJl '_-; rer www.energylab.com
AIMI1IbI £xwIIwIu smc. 1m Helena, MT 817·472-0711 • Billings, MT 800·135-4489 . Casper, WY 888-235-0515
Gillette, WY 88B·I88-7175 • Rapid City, SD 888·&12-1225 • College station, lX 888-690·2218
QA/QC Summary Report
Client: Denison Mines USA Corp Report Date: 10/19/10
Project: 3rd Quarter Nitrate Work Order: C10091262
Analyte Count Result Units RL %REC Low Limit High Limit RPO RPOLimit Qual
Method: E353.2 Batch: R138546
Sample 10: MBLK·1 Method Blank Run: TECHNICON_1 01 014A 10/14/10 13:0B
Nitrogen, Nitrate+Nitrite as N ND mg/L 0.04
Sample 10: LCS-2 Laboratory Control Sample Run: TECHNICON_101014A 10/14/1013:10
Nitrogen, Nitrate+Nitrite as N 2.47 mg/L 0.10 99 90 110
Sample 10: C10091262~02BMS Sample Matrix Spike Run: TECHNICON_101014A 10/14/10 13:2B
Nitrogen, Nitrate+Nitrite as N 2.56 mg/L 0.10 100 90 110
Sample 10: C10091262~02BMSO Sample Matrix Spike Duplicate Run: TECHNICON_1 01 014A 10/14/10 13:30
Nitrogen, Nitrate+Nitrite as N 2.58 mg/L 0.10 101 90 110 0.8 10
Sample 10: C10091262~12BMS Sample Matrix Spike Run: TECHNICON_101014A 1 0/14/1 0 14:05
Nitrogen, Nitrate+Nitrite as N 2.11 mg/L 0.10 101 90 110
Sample 10: C10091262~12BMSO Sample Matrix Spike Duplicate Run: TECHNICON_101014A 10/14/10 14:0B
Nitrogen, Nitrate+Nitrite as N 2.23 mg/L 0.10 107 90 110 5.5 10
Method: E353.2 Batch: R13B655
Sample 10: MBLK·1 Method Blank Run: TECHNICON_101018A 10/18/10 13:03
Nitrogen, Nitrate+Nitrite as N ND mg/L 0.04
Sample 10: LCS·2 Laboratory Control Sample Run: TECHNICON_1 01 01 BA 10/18/1013:05
Nitrogen, Nitrate+Nitrite as N 2.46 mg/L 0.10 98 90 110
Sample 10: C10100110~02AMS Sample Matrix Spike Run: TECHNICON_101018A 1011 B/1 0 13:20
Nitrogen, Nitrate+Nitrite as N 2.61 mg/L 0.10 110 90 110
Sample 10: C10100110~02AMSO Sample Matrix Spike Duplicate Run: TECHNICON_l 01 01 BA 10/18/10 13:23
Nitrogen, Nitrate+Nitrite as N 2.58 mg/l 0.10 108 90 110 1.2 10
Qualifiers:
RL -Analyte reporting limit. ND -Not detected at the rElporting limit.
Page 9 of 12
EN:RGY
I I\I. .... HH-..1'\101-t1i .~ ~~ www.energylab.com
~ W/J1IaIEmIIMuShlu llU
Helen., MT 871-412-0111 • Billings, MT 800-135-4489 • Casper, WY 888-235-0515
Gillette, WY 888-888-1115 • Rapid City, SD 888-812-1225 • College Statlon,l)( 888-690-2218
Workorder Receipt Checklist
Denison Mines USA Corp
1111111111111111111111111111111111111111111111111111111
C10091262
Login completed by: Halley Ackerman
Reviewed by: BL2000\kschroeder
Reviewed Date: 10/5/2010
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 container/bottle?
Sample containers intact?
Sufficient sample volume for indicated test?
All samples received within holding time?
Containerrremp Blank temperature:
Water -VOA vials have zero headspace?
Water -pH acceptable upon receipt?
Contact and Corrective Action Comments:
None
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'
Date Received: 9/30/2010
Received by: ha
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
No 0
Carrier name: FedEx
Not Present 0
Not Present 0
Not Present 0'
No VOA vials submitted 0'
Not Applicable 0
Page 10 of 12
"'0 Ql <0 Cl)
->.
->. a
N
Chain of Custody and Analytical Request Record
M~'t\e~
Report Mail Address: PO a~ f{0C\
~ .. ,.no.:~n" \XT g,,\~l \
~AMe
Phone/Fax:
4~ b78~\
~AJW\~
State: ~"1"'
Email:
Purchase Order:
Page~of~
Yes ~ No 0
Sampler: (Please Print)
AMei' Ho\ .
Quote/Bottte Order:
Special Report/Formats: ~ &OOli\l1, W@[]@ oorn@~~ .. Contact ELI prior to
DDW
DpOTWNVWTP o State: o Other:----
o EDD/EDT(Electronic Data)
Format:. ___ _ o LEVEL IV o NELAC
~o ~CD -> ~(/) Os: ~« o ··a ~ ... &(1) 5
~I'ai ' .......... :>
j (1.)«-.(1.):> z'iS. g>o !ij >1
(/)
0 w
I U « ~ ~
W
W en
R -I-« !::.
'tl c ~ u
IV E j I-
'E 5
IV 'tl c .! C/) H
RUSH sample submittal I ___ .~ ( ........ I I
for charges and
scheduling -See
Instruction
Comments: p
3 °c
Onlce: ~ N
Seal ~
On Bollla ~ (,!:!J
On Cooler \,:J N
Intact f!l N
SIgnature {J}N
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.
V;",it nur web site at www.eneravlab.com for additional information, downloadable fee schedule, forms, and links.
-u Ql co CD
->.
~
o -->.
~
Chain of Custody and Analytical Request Record Page --4.. of ~
as
M'·ne!> State: u.." Yes EiiI NoD
Contact Name: Phone/Fax: Email: Sampler: (Please Print)
'135 '78 ~\ :.v.U' l-lo 1t:J".
Pu rchase Order: Quote/Bottle Order:
Special Report/Formats: :l: ~\:7@[]® OO§@QD~~ .. Contact ELI prior to
a ..... RUSH sample submittal ~o (I).! ~m;gol CD t=' R for charges and
'~>~~m a <C( scheduling -See o EDD/EDT(Electronic Data) §Cf.lUJ ~ s: w !::. Instruction J: '0
Format. u:l:'o 2l :? U c: Comments: . .... ct: CJ)liiil:>2 ::::J U D LEVEL IV ~ cu2 1:::·2 ~ 0 ...
D NELAC ~~r~~ ~ J
I-as
l-E
~ ::::J ::IQ).-Gl:l:,~l~ ~I 5 z c.. ct:1 g'O ~~.. w
tij >1 ~ ~ w .... as en ""0 (I) <_.-c:
Collection ' ~ ""--"'-, ......... 11... ~I H
D ow o POTWf\NWTP D State: ___ _ o Other: ___ _
Date
Return to Client:
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.
TabH
Quality Assurance and Data Validation Tables
H-I Field Data QNQC Evaluation
Volume
Location 2x Casio!! Volume Pumped Volume Check CoDductOOty RPD pH RPD 1:elllP RPD Redox PoteDtiaI RPD Turbiditv RPD
Piezometer I -2244 -6.74 -26.18 -404 -6.8 -
Piezometer 2 -619.2 -7.69 -25.97 -311 -6.1 -
Piezometer 3 -2768 -1l.31 -26.99 -150 -18.5 -
TWN-1 83.23 110.00 OK 771.9 771.1 0.10 7.51 7.50 0.13 15.08 15.09 0,07 415 415 0.00 792 81.2 2.49
TWN-2 105.25 130.00 OK 3337 3360 0.69 6.89 6.90 0.15 14.89 14.99 0.67 452 452 0.00 177.4 87.9 67.47
TWN-3 83.87 64.00 Not Sufficient 2633 2680 1.77 6.84 6.86 0.29 14.95 14.88 0.47 347 349 0.57 27D.4 262.0 3.16
TWN-4 115.33 140.00 OK 1011 1012 0.10 7.34 7.33 0.14 14.52 14.53 0,07 423 424 0.24 84.3 85.6 1.53
TWN-5 104.48 110.00 OK 3100 3100 0.00 6,55 6.57 0.30 15.15 15.11 0.26 338 335 0.89 13.9 13.0 6.69
TWN-6 72.12 80.00 OK 1519 1540 1.37 6.74 6.74 0.00 15.09 15.09 0.00 443 442 023 16.4 17.8 8.19
TWN-7 19.96 13,00 Not Sufficient 1215 1241 2.12 651 6.70 2_88 21.60 16.31 27.91 492 484 1.64 12_6 6.0 70.97
TWN-8 109.19 200.00 OK 2469 2472 0.12 6.98 6.95 0.43 14.74 14.73 0,07 \33 \38 3.69 3.0 6_0 66.67
TWN-9 42.51 41.00 Not Sufficient 2507 2732 8.59 6.40 6.43 O.4J 15.38 1524 0.91 476 475 0.21 81.9 113.4 32.26
TWN-IO 30.40 38.00 OK 3735 3842 2.82 3.99 4.25 6.31 15.38 15.15 LSI 501 502 0.20 354.5 132.5 91.17
TWN-II 94.42 120.00 OK 2755 2752 0,)1 6.96 6.96 0.00 14.77 14.77 0.00 415 415 0.00 2.6 2.4 8.00
TWN-12 96.71 100.00 OK 2541 2547 0.24 6.79 6.80 0.15 14.75 14.73 0.14 106 III 4.61 73.5 80.1 8.59
TWN-13 95.55 120.00 OK 1260 1251 0.72 7.98 8.00 0.25 14.94 14.95 0.07 465 463 0.43 21.8 21.6 0.92
TWN-14 94.Q2 50.00 Not Sufficient 1177 NA NA 7.35 NA NA 15.91 NA NA 383 NA NA 44.8 NA NA
TWN-15 81.79 20.00 NOI SlIfficient 1571 1593 1.39 6.61 6.61 0.00 16.85 15.81 637 369 364 1.36 99.2 112.7 12.74
TWN-16 67.06 90.00 OK 1811 1785 1.45 7.10 7.10 0.00 14.67 14.66 0.D7 422 421 0.24 1.3 1.3 0.00
TWN-17 97.73 85.00 NotSufficieDl 1092 1089 0.28 7.20 7.21 0.14 15.05 15.\3 053 366 364 0.55 169.1 123.6 31.09
TWN-18 113.49 140.00 OK 2D7 2129 0.38 7.04 7.04 0.00 14.48 14.47 0.D7 403 403 0.00 11.7 11.5 1.72
TWN-19 73.84 90.00 OK 1941 1937 0.21 7.40 7.40 000 14.82 14.91 0.61 438 438 0.00 14.2 191.3 172.36
UWLP -___ 259.8 259.9 , .. 0.04 10.45 10.44 0.10 30.7 30.72 0.07 201 207 2.94 23 3_5 41.38
Piezometers 1, 2, and 3 were not pumped, only one set of parameters were taken.
TWN-2, TWN-3, TWN-7, TWN-9, TWN-IO, TWN-14, TWN-15, TWN-17, and TWN-19 were pumped dry.
UWLP is a pond grab sample, no pumping was required and stabilization parameters are not applicable
RPD > than 10"10
H-2: Holding Time Evaluation
Allowed Holding
Holding Time
Location Constituent Holding Time Time Check
Piezometer 1 Chloride 15.00 days 28 days OK
Piezometer 1 Nitrogen 9.00 days 28 days OK
Piezometer 2 Chloride 15.00 days 28 days OK
Piezometer 2 Nitrogen 9.00 days 28 days OK
Piezometer 3 Chloride 15.00 days 28 days OK
Piezometer 3 Nitrogen 9.00 days 28 days OK
TWN-I Chloride 16.00 days 28 days OK
TWN-l Nitrogen 17.00 days 28 days OK
TWN-2 Chloride 14.00 days 28 days OK
TWN-2 Nitrogen 19.00 days 28 days OK
TWN-3 Chloride 5.00 days 28 days OK
TWN-3 Nitrogen 11.00 days 28 days OK
TWN-4 Chloride 16.00 days 28 days OK
TWN-4 Nitrogen 17.00 days 28 days OK
TWN-5 Chloride 8.00 days 28 days OK
TWN-5 Nitrogen 14.00 days 28 dl!)'s OK
TWN-6 Chloride 7.00 days 28 days OK
TWN-6 Nitrogen 13.00 days 28 days OK
TWN-7 Chloride 6.00 days 28 days OK
TWN-7 Nitrogen 12.00 days 28 days OK
TWN-8 Chloride 8.00 days 28 days OK
TWN-8 Nitrogen 14.00 days 28 days OK
TWN-9 Chloride 5.00 days 28 days OK
TWN-9 Nitrogen 11.00 days 28 days OK
TWN-I0 Chloride 6.00 days 28 days OK
TWN-lO Nitrogen 12.00 days 28 days OK
TWN-l1 Chloride 16.00 days 28 days OK
TWN-l1 Nitrogen 17.00 days 28 days OK
TWN-12 Chloride 8.00 days 28 days OK
TWN-12 Nitrogen 14.00 days 28 days OK
TWN-13 Chloride 16.00 days 28 days OK
TWN-13 Nitrogen 17.00 days 28 days OK
TWN-14 Chloride 5.00 days 28 days OK
TWN-14 Nitrogen 11.00 days 28 day_s OK
TWN-15 Chloride 7.00 days 28 days OK
TWN-15 Nitrogen 13.00 days 28 days OK
TWN-16 Chloride 16.00 days 28 days OK
TWN-16 Nitrogen 17.00 days 28 days OK
TWN-17 Chloride 5.00 days 28 days OK
TWN-17 Nitrogen 11.00 days 28 days OK
TWN-18 Chloride 16.00 days 28 days OK
TWN-18 Nitrogen 17.00 days 28 days OK
TWN-19 Chloride 14.00 days 28 days OK
TWN-19 Nitrogen 15.00 days 28 days OK
TWN-65 Chloride 16.00 days 28 days OK
TWN-65 Nitrogen 17.00 days 28 days OK
UWLP Chloride 15.00 days 28 days OK
H-2: Holding Time Evaluation
Allowed Holding
Holding Time
Location Constituent Holding Time Time Cheek
UWLP Nitrogen 9.09 days 28 days OK
PondD Chloride 15.00 days 28 days OK
PondD Nitrogen 9.00 days 28 days OK
H·3: Analytical Method Check
Parameter Me.thod Method Used by Lab
Nitrate £353.2 E353.2
Chloride A4500-CI B A4S00·CI B
Both Nitrate and Chloride were analyzed with the correct analytical method.
H-4: Reporting Limit Evaluation
Analytical Rqd'
Method Lab Reporting Reporting
Location Constituent Check Limit Limit Qualifier
Piezometer 1 Chloride OK 1 mg/L 1 mg/L
Piezometer 1 Nitrogen OK O.S mg/L 0.1 mg/L D
Piezometer 2 Chloride OK 1 mg/L 1 mg/L
Piezometer 2 Nitrogen OK 0.1 mg/L 0.1 mg/L
Piezometer 3 Chloride OK 1 mg/L 1 mg/L
Piezometer 3 Nitrogen OK 0.2 mg/L 0.1 mg/L D
TWN-l Chloride OK 1 mg/L 1 mg/L
TWN-l Nitrogen OK 0.1 mglL 0.1 mg/L
TWN-2 Chloride OK 1 mg/L 1 mg/L
TWN-2 Nitrogen OK 2 mg/L 0.1 mg/L D
TWN-3 Chloride OK 1 mg/L 1 mg/L
TWN-3 Nitrogen OK 2 mg/L 0.1 mg/l D
TWN-4 Chloride OK 1 mg/L 1 mg/L
TWN-4 Nitrogen OK 0.1 mg/L 0.1 mg/L
TWN-S Chloride OK 1 mg/L 1 mgIL
TWN-S Nitrogen OK 0.1 mg/L 0.1 mg/L
TWN-6 Chloride OK 1 mg/L 1 mglL
TWN-6 Nitrogen OK 0.2 mg/L 0.1 mg/L D
TWN-7 Chloride OK 1 mglL 1 mg/L
TWN-7 Nitrogen OK 0.2 mg/L 0.1 mg/L D
TWN-8 Chloride OK 1 mgIL 1 mgIL
TWN-8 Nitrogen OK 0.1 mg/L 0.1 mgIL U
TWN-9 Chloride OK 1 mglL 1 mg/L
TWN-9 Nitrogen OK O.S mg/L 0.1 mglL D
TWN-lO Chloride OK 1 mg/L 1 mg/L
TWN-lO Nitrogen OK 0.1 mglL 0.1 mg/L
TWN-ll Chloride OK 1 mgIL 1 mg/L
TWN-11 Nitrogen OK 0.1 mg/L 0.1 mg/L
TWN-12 Chloride OK 1 mg/L 1 mg/L
TWN-12 Nitrogen OK 0.1 mg/L 0.1 mg/L
TWN-13 Chloride OK 1 mg/L 1 mgIL
TWN-13 Nitrogen OK 0.1 mg/L 0.1 mg/L
TWN-14 Chloride OK 1 mg/L 1 mg/L
TWN-14 Nitrogen OK 0.2 mg/L 0.1 mg/L D
TWN-1S Chloride OK 1 mg/L 1 mglL
TWN-1S Nitrogen OK 0.1 mg/L 0.1 mg/L
TWN-16 Chloride OK 1 mg/L 1 mg/L
TWN-16 Nitrogen OK 0.1 mglL 0.1 mg/_L
TWN-17 Chloride OK 1 mg/L 1 mglL
TWN-17 Nitrogen OK O.S mg/L 0.1 mg/L D
TWN-18 Chloride OK I mglL I mg/L
TWN-18 Nitrogen OK 0.1 mg/L 0.1 mglL
TWN-19 Chloride OK 1 mg/L 1 mg/L
TWN-19 Nitrogen OK 0.2 mg/L 0.1 mg/L D
TWN-6S Chloride OK 1 mg/L 1 mglL
TWN-6S Nitrogen OK 0.1 mg/L 0.1 mg/L
UWLP Chloride OK 1 mglL 1 mg/L U
H-4: Reporting Limit Evaluati on
Analytical Rqd'
Method Lab Reporting Reporting
Location Constituent Check Limit Limit Qualifier
UWLP Nitrogen OK 0.1 mg/L 0.1 mg/.L U
Pond 0 Chloride OK Ilmg/L 1 mglL tJ
PondD Nitrogen OK O.llmg/L 0.1 mg/L U
H-5 QAlQC Evaluation for Sample Duplicates
Constituent UWLP Pond D %ReD
Chloride 0 0 0.00
Nitrogen 0 0 0.00
Constituent TWN~ll TWN-65 %RPD
Chloride 76 80 5.13
Nitrogen 1.4 1.4 0.00
H-6 QC Control Limits for Analysis and Blanks
The percent recovery was within the liinits for all lab control samples, matrix spikes, and matrix spike duplicates.
The RPD was below acceptable limits for each sample matrix spike duplicate from Energy Labs.
The Method Blanks had no reported detections of target analytes.
H-7 Receipt Temperature Evaluation
Sample Batch Wells in Batch Temperature
CIOO70624 TWN-3, TWN-3R, TWN-4, TWN-4R, TWN-S, TWN-SR, TWN 3 ·C
6, TWN-6R, TWN-7, TWN-7R, TWN-S, TWN-SR, TWN-9,
TWN-9R, TWN-IO, TWN-IOR, TWN-12. TWN-12R, TWN-14,
TWN-14R, TWN-15, TWN-15R, TWN-17, TWN-17R, TWN-
60, and TWN-65
CIOO70876 Piez I, Piez 2, Piez 3, UW LP, and Pond D 2 ·C
CIOO9 1262 3 ·C
TWN-l, TWN-IR, TWN-2. TWN-2R, TWN-4, TWN-4R, TWN
II, TWN-1 IR, TWN-13, TWN-13R, TWN-16, TWN-16R,
TWN-1S, TWN-ISR, TWN-19, TWN-19R, and TWN-65
H-8 Rinsate Evaluation
All rinsate blank sample results were nondetect.
Tab I
Kriged Current Quarter Isoconcentration Maps
0
MW-4
.4.8
06.8
PIEZ-l
~6.8
1WN-l ~1
1W4·26 ~9
MW·34
-9-NS
PROPERTY
BOUNDARY
II
II
II
II
II
II
II
'l
MW-Ol
eNS
~;
MW-18 eNS
~1 TWN-1S
00.2 TWN-l0
~1 .4
TWN-ll
~3.S TWN-14
~1 .4
TWN-6
/ .11 '
I TWN-9/
00.1
TWN-8
Ph-1 / ~&.tf
MW-19 e NS
00.7 TWN-12
...... ~
~ ~ c
l ~1.8
TWN-18 -......
b-:::::-99"
II.lr
#' II
II
,I I 41
MW-02 e NS
MW-BS
II
II
(t
....::::
II
II
I 1 s CELL NO. 48
I
II
II
II
II
II
I
32
MW-03 eNS
• MW-21
1\
\1
\1
\' ~ s
\\ MW4b" "\~ e 7.7 '\ ~~ '\ ~~ \
~ \
N
CELL NO.1
MW-17
eNS
33
NO
°
00.9 N-4
PIEZ-2 "0.6
PIEZ-3
"1.8
......
-07-
01.2 I
--
00.8 03.11 09 ,
......
" \
r.:---OG.7~W / \ ---3.9 tJ4 4\~crs·8
,0'1..3 \ 02.8
0;&.9 "
~ ) '-5--
I
PIEZ-4 .l-.:::: -=-..=-~.=:-
"NS /
PIEZ-S
"NS
/ ~ 7
T37S
T38S ~
"
~ \ -~~-=--=-\ -~, \
-". #' _===_ 4 1/ ~~ 4 ---=--=--=--=----#' ~~ ----=-~-=--=--=-?I
~ \
3000
SCALE IN FEET
EXPLANATION
perched monitoring well showing
concentration in mg/L
temporary perched monitoring well
showing concentration in mg/L
perched piezometer showing
concentration in mg/L
temporary perched nitrate monitoring well
showing concentration in mg/L
temporary perched monitoring well installed
May, 2010 showing concentration in mg/L
perched monitoring well installed
August/September, 2010 (not sampled)
MW-22 e2.3
1/
#
#
# # #
#
#
#
#
#
NOTES: ND = not detected, NS = not samoled
HYDRO
GEO
CHEM, INC. APPROVED
SJS
KRIGED 3rd QUARTER, 2010 NITRATE (mg/L)
(NITRATE + NITRITE AS N)
WHITE MESA SITE
DATE REFERENCE I FIGURE
H:/718000/nov1 O/nitrate/nit091 O.srf
=,
'I.
/t
r(
\1
II # ~ ~.::::-. ~ = :::::----
~9" g'Y ~r
#' II
" I' I ~I
" ,I
,I
II
II
11 32
I'
"
,I
I' ,I
"
"
"
,I
"
PROPERTY
BOUNDARY
//
//
//
//
//
//
//
'I
1 /1
((
-...;:::
MW-D2
eNS
MW-B5
1s
CELL NO. 48
r
MW~3
<>NS--MW-34 ~Pm
MW-D3 eNS
MW-17
eNS
MW-Dl
eNS
~
~7 TWN-7
33
MW-18 ~73
eNS TWN-6
~11 TWN~
~4 TWN-18
~36 TWN-15
MW-19
eNS
~76
TWN-ll
~26 TWN-14
~35
~ PIEZ-2 Vk "8 Jii\
038
040
PI EZ-3
"35
038 022 035
043 055
40 o
PIEZ-4
"NS
PIEZ-5 IINS
36.
38035
036
031
TW4-26
3:E17
035
,6/1-.::=: -== -=-.=-.=:-
h~?
/'
T378
) \
~ ~
[l
(
\
• ~-21
II
II
T38S ~
N
II
\\
~ ~ ~ ~ ~
MW-20
e65
~ ~'" --=-~,... ---=--=--~-
II ~~~~~~4 --=--=--=--=--=--=--=--=--=--=--=-7! ~~ 4' H-----+l ~.
[~~__ ---:-:J
a 3000
SCALE IN FEET
EXPLANATION
MW-4 perched monitoring well showing
.38 concentration in mg/L
035 temporary perched monitoring well
showing concentration in mg/L
PIEZ-1 perched piezometer showing ~ 52 concentration in mglL
TWN-1 temporary perched nitrate monitoring well ~19 showing concentration in mg/L
TW4-26 temporary perched monitoring well installed ~17 May, 2010 showing concentration in mg/L
MW-34 perched monitoring well installed
-¢-NS August/September, 2010 (not sampled)
"'-----
MW-22
e56
1/
//
//
//
//
//
//
//
//
//
//
NOTES: ND = not detected, NS = not sarnoled
HYDRO
GEO
CHEM, INC. APPROVED
SJS
KRIGED 3rd QUARTER, 2010 CHLORIDE (mg/L)
WHITE MESA SITE
DATE REFERENCE I FIGURE
H:n18000/nov1 O/chloride/cI091 O.srf
"
TabJ
Analyte Concentrations Over Time
TWN-1
Date Nitrate (mg/I) Chloride (mg/I)
2/6/2009 0.7 19
7/21/2009 0.4 17
9/21/2009 0.4 19
10/28/2009 0.5 18
3/17/2010 0.5 17
5/26/2010 0.6 20
9/27/2010 0.6 19
TWN-2
Date Nitrate (mg/I) Chloride (mg/I)
2/6/2009 25.4 29
7/21/2009 25 25
9/21/2009 22.6 17
11/2/2009 20.8 55
3/24/2010 62.1 85
6/2/2010 69 97
9/29/2010 69 104
TWN-3
Date Nitrate (mg/I) Chloride (mg/I)
2/6/2009 23.6 96
7/21/2009 25.3 96
9/21/2009 27.1 99
11/2/2009 29 106
3/25/2010 25.3 111
6/3/2010 26 118
7/15/2010 27 106
TWN-4
Date Nitrate (mg/I) Chloride (mg/I)
2/6/2009 1 13
7/21/2009 0.05 12
9/21/2009 0.4 13
10/28/2009 0.4 11
3/16/2010 0.9 22
5/27/2010 1.0 22
9/27/2010 0.9 19
TWN-5
Date Nitrate (mg/I) Chloride (mg/I)
8/25/2009 0.22 42
9/21/2009 0.5 45
11/10/2009 0.2 48
3/16/2010 0.3 43
5/26/2010 0.3 44
7/12/2010 0.3 43
TWN-6
Date Nitrate (mg/I) Chloride (mg/I)
8/25/2009 3.2 32
9/22/2009 1.6 13
11/3/2009 1.4 21
3/23/2010 1.5 19
6/1/2010 1.4 22
7/13/2010 1.4 73
TWN-7
Date Nitrate (mg/I) Chloride (mg/I)
8/25/2009 ND 11
9/21/2009 ND 7
11/10/2009 0.1 7
3/17/2010 0.8 6
5/28/2010 1.2 6
7/14/2010 1.6 7
TWN-8
Date Nitrate (mg/I) Ch loride (mg/I) Notes
8/25/2009 0 11 Nitrate is NO
9/21/2009 0 12 Nitrate is NO
11/10/2009 0 12 Nitrate is NO
3/16/2010 0 11 Nitrate is NO
5/26/2010 0 11 Nitrate is NO
7/12/2010 0 11 Nitrate is NO
TWN-9
Date Nitrate (mg/I) Chloride (mg/I)
8/25/2009 9.3 169
9/22/2009 8.9 201
11/10/2009 12 205
3/23/2010 7.6 183
6/1/2010 7.6 175
7/15/2010 10.7 210
TWN-10
Date Nitrate (mg/I) Chloride (mg/I)
8/25/2009 1.1 19
9/22/2009 1.6 35
11/10/2009 1.4 26
3/23/2010 1.5 54
6/4/2010 1 30
7/14/2010 0.2 21
TWN-11
Date Nitrate (mg/I)
11/3/2009 1.3
3/17/2010 1.4
6/4/2010 1.3
9/27/2010 1.4
Chloride (mg/I)
74
73
72
76
TWN-12
Date Nitrate (mg/I)
11/3/2009 0.5
3/17/2010 0.7
5/26/2010 0.8
7/12/2010 0.7
Chloride (mg/I)
109
113
106
112
TWN-13
Date Nitrate (mg/I)
11/4/2009 0.5
3/17/2010 0
5/26/2010 0.1
9/27/2010 0.2
Chloride (mg/I)
83
47
49
53
Notes
Nitrate ND
TWN-14
Date Nitrate (mg/I) Chloride (mg/I)
11/4/2009 3.4 32
3/24/2010 2.9 24
6/2/2010 2.9 30
7/15/2010 3.5 26
TWN-15
Date Nitrate (mg/I)
11/10/2009 1.1
3/18/2010 0.7
5/28/2010 1.0
7/13/2010 1.0
Chloride (mg/I)
78
43
39
36
TWN-16
Date Nitrate (mg/I)
11/4/2009 1
3/17/2010 1.2
5/27/2010 0.2
9/27/2010 2.6
Chloride (mg/I)
39
35
35
35
TWN-17
Date Nitrate (mg/I) Chloride (mg/I)
11/4/2009 6.7 152
3/24/2010 10.4 78
6/3/2010 11 87
7/15/2010 8.9 66
TWN-18
Date Nitrate (mg/I) Chloride (mg/I)
11/2/2009 1.3 57
3/17/2010 1.6 42
6/1/2010 1.8 63
9/27/2010 1.8 64
TWN-19
Date Nitrate (mg/I)
11/2/2009 7.4
3/23/2010 7.2
6/1/2010 6.2
9/29/2010 7.2
Chloride (mg/I)
125
118
113
113
Piezometer 1
Date Nitrate (mg/I) Chloride (mg/I)
2/19/2009 6.8 NA
7/14/2009 6.8 60
9/22/2009 7.3 78
10/27/2009 7.4 61
6/2/2010 7.2 52
7/19/2010 6.8 52
Piezometer 2
Date Nitrate (mg/I) Chloride (mg/I)
2/19/2009 O.S NA
7/14/2009 O.S 7
9/22/2009 O.S 17
10/27/2009 0.6 7
6/2/2010 0.6 8
7/19/2010 0.6 8
Piezometer 3
Date Nitrate (mg/I) Chloride (mg/I)
2/19/2009 0.7 NA
7/14/2009 0.8 12
9/22/2009 0.8 24
10/27/2009 1.2 19
3/24/2010 1.7 116
6/2/2010 1.6 36
7/19/2010 1.6 35
Piezometer 4
Date
7/14/2009
Nitrate (mg/I)
1.8
Chloride (mg/I)
46
Piezometer 5
Date
7/14/2009
Nitrate (mg/I)
0.7
Chloride (mg/I)
18
MW-18
Date Nitrate (mg/I)
7/14/2009 ND
Chloride (mg/I)
51
MW-19
Date Nitrate (mg/I)
7/14/2009 2.2
Chloride (mg/I)
24
Upper Wildlife Pond
Date Nitrate (mg/I) Chloride (mg/I) Note
9/22/2009 0 5 Nitrate ND
10/27/2009 0 3 Nitrate ND
6/2/2010 0 0 Nitrate and Chloride ND
7/19/2010 a 0 Nitrate and Chloride ND
Frog Pond
Date
10/14/09
Nitrate (mg/I)
o
Chloride (mg/I)
o
Notes
Nitrate NO
TabK
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TabL
CSV Transmittal Letter
Kathy Weinel
From:
Sent:
To:
Cc:
Subject:
Attachments:
Dear Mr. Lundberg,
Kathy Weinel
Tuesday, November 09,20101:14 PM
[e-mail]
Jo Ann Tischler
Transmittal of CSV Files White Mesa Mill 2010 Q3 Nitrate Monitoring
C10070624.csv; C10070876.C5V; C10091262 .. C5V
Attached to this e-mail are electronic copies of laboratory results for nitrate monitoring conducted at the White Mesa
Mill during the third quarter of 2010, in Comma Separated Value (CSV) format.
Please contact me at 303-389-4134 if you have any questions on this transmittal.
Yours Truly
Kathy Weinel
Denison Mines (USA) Corp.
Quality Assurance Manager
1