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Home My WebLink AboutDRC-2009-003984 - 0901a0688014084c[:::>]ic' -^oo^i-cxyofi?^ DENISON^i MINES Denison Mines (USA) Corp. 1050 17th Street, Suite 950 Denver, CO 80265 USA Tel : 303 628-7798 Fax: 303 389-4125 www.denisonmlnes.com <^^' f)3<^37 it r-r i lr-' \^ ^^-^yy^.y '^^ ^^ 2009 -i ^'>Viz;o^:j •••.•/ '^ 'i)^ "^£1.91^ August 29, 2009 Sent Via Federal Express Mr. Dane Finerfrock, Executive Secretary, Utah Radiation Control Board, Utah Department of Environmental Quality, Division of Radiation Control 168 North 1950 West SaU Lake City, Utah 84114-4850 Dear Mr. Finerfrock: Re: State of Utah Radioactive Material License No. UT1900479 White Mesa Mill, Blanding, Utah Semi-Annual Effluent Monitoring Report for Period January 1, 2009 through June 30, 2009 As required by Utah Administrative Code, R 313-24-4 (incorporating by reference 10 CFR 40.65 (subpartl)), and License Condition 11.3 A of Utah Radioactive Materials License UT1900479, enclosed is the semi-annual effluent monitoring report for the White Mesa Mill for the period January 1, 2009 through June 30, 2009. If you have any questions regarding this report, please contact Mr. David Turk at (435) 678-2221 or myself at (303) 389-4132. Yours very tmly. •UNISON MINES (USA) CORP. Steven D. Landau Manager, Environmental Affairs Cc Ron Hochstein Harold Roberts (w/o attachments) David Frydenlund David Turk Denison Mines USA Corp 1050 17th Street Suite 950 DENISO ii Denver CO 80265 fSI ES Tel 303 628-7798 Fax 303 389-4125 www.denisonmines.com August 29 2009 Sent Via Federal Express Mr Dane Finerfrock Executive Secretary Utah Radiation Control Board Utah Department of Environmental Quality Division of Radiation Control 168 North 1950 West Salt Lake City Utah 84114-4850 Dear Mr Finerfrock Re State of Utah Radioactive Material License No UT1900479 White Mesa Mill Blanding Utah Semi-Annual Effluent Monitoring Report for Period January 2009 through June 30 2009 As required by Utah Administrative Code 13-24-4 incorporating by reference 10 CFR 40.65 subpartl and License Condition 11.3 of Utah Radioactive Materials License UT1900479 enclosed is the semi-annual effluent monitoring report for the White Mesa Mill for the period January 2009 through June 30 2009 If you have any questions regarding this report please contact Mr David Turk at 435 678-2221 or myself at 303 389-4132 Yours very truly ENISON MINES USA Corn Steven Landau Manager Environmental Affairs Cc Ron Hochstein Harold Roberts w/o attachments David Frydenlund David Turk White Mesa Uranium Mill Radioactive Materials License UT900479 Semi-Annual Effluent Monitoring Report January through June 2009 Prepared For Utah Department of Environmental Quality Division of Radiation Control Prepared by Denison Mines USA Corporation 1050 l7tI Street Suite 950 Denver CO 80265 August 2009 Introduction The White Mesa Mill the Mill has established monitoring programs to evaluate compliance with effluent limitations and to assess the potential for release of radioactive material into the local environment These monitoring programs were developed and implemented at the time of mill construction operated with appropriate adaptation over time and remain consistent with the Mills Radioactive Materials License and guidelines developed by the Nuclear Regulatory Commission U.S.N.R.C Regulatory Guide 4.14 Radiological Effluent and Environmental Monitoring at Uranium Mills-Rev ML003739941 1980 Accordingly the Mill monitors the following environmental media and conditions Airborne particulate radionuclide concentrations obtained from the following sampling stations North East and South of the Mill Site BHV-1 BHV-2 north BHV-5 east and BHV-4 south BHV-1 serving as surrogate for the nearest resident i.e BHV-1 is approximately 1.2 miles north of the Mill but approximately 0.4 miles closer to the Mill than the actual nearest resident background location distant to and west of the Mill BHV-3 which was monitored for airborne particulate up until November 1995 at which time background was established station specifically requested by the White Mesa Ute Community south of the Mill Site BVH-6 External direct gamma radiation measured at air monitoring stations BHV- BHV-2 BHV-3 BHV-4 and BHV-5 Vegetative uptake of radionuclides at three site periphery locations Stack release rates from the facilitys air emissions sources Surface water within the Cottonwood Creek and when flowing the Westwater Creek drainage both located west of the Mill Soil radionuclide activity obtained near the air monitorin stations Ground water up and down gradient of the Mill facility This semi-annual effluent report provides the results of the specific monitoring and sampling activities that were undertaken during the subject reporting period including Airborne particulate concentrations and radionuclide activity External radiation measurements Vegetative radionuclide uptake Radionuclide release rates measured at the yellowcake stack baghouse and the grizzly baghouse Surface water radionuclide content Ground water sampling is reported separately pursuant to the State of Utah Ground Water Discharge Permit No UGW370004 and is not included with this report Table of Contents Section Page Introduction Table of Contents ii 1.0 Environmental Air Sampling 1.1 Program Overview 1.2 Sampling Protocol Analytical Results 1.3 General Observations 1.4 Specific Sampling Station Data 1.SRadon-222 2.0 External Radiation Direct Gamma 3.0 Vegetation Samples 4.0 Stack Sampling 5.0 Surface Water Monitoring 6.0 Soil Sampling 7.0 Meteorological Monitoring Attachments Attachment Sampling Station Site Map Tab BHV-1 Air Sampling Graphs Data Table Tab2 BHV-2 Air Sampling Graphs Data Table Tab BHV-3 Air Sampling Graphs Data Table Tab BHV-4 Air Sampling Graphs Data Table Tab BHV-5 Air Sampling Graphs Data Table Tab BHV-6 Air Sampling Graphs Data Table Attachment Air Radionuclide Lab Results and QA/QC Attachment Air Particulate Loading Tables Attachment Environmental TLD Graph Attachment Vegetation Graphs Data Table Lab Results and QA/QC Attachment Stack Sample Laboratory Results Attachment Surface Data Table Lab Results and QAIQC Attachment Soil Sample Graphs Lab Results and QAIQC 11 1.0 Environmental Air Sampling 1.1 Program Overview The environmental airborne particulate monitoring program at the White Mesa Mill the Mill currently utilizes five air sampling stations Four high-volume continuous air sampling stations BHV-1 BHV-2 BHV-4 and BHV-S are required by the Mills Radioactive Materials License These sampling stations serve as sentinels for airborne particulate which could potentially emanate from the Mill site In addition to its general site monitoring function location BHV-also serves as conservative surrogate for concentrations at the nearest resident because it is located approximately 1.2 miles north of the Mill just south of the nearest resident but between the Mill and that resident With regard to background monitoring the Mill previously operated continuous high-volume air sampling station BHV-3 which was located approximately 3.5 miles west of the Milling operation With the approval of the U.S Nuclear Regulatory Commission and effective November 1995 this station BHV-3 was removed from the active air monitoring program At that time JUSA proposed and the NRC determined that sufficient air monitoring data base had been compiled at station BHV-3 to establish representative airborne radionuclide background for the Milling facility It should be noted however that while air sampling was discontinued at this location gamma measurements and soil sampling continue to be collected at BHV-3 In addition to the environmental air sampling locations described above sixth station BHV-6 was installed at the request of the White Mesa Ute Community This station began operation in July of 1999 and provides airborne particulate information in the southerly direction between the Mill and the White Mesa Ute Community 1.2 Sampling Protocol and Analytical Results Airborne particulate monitors are operated continuously at each of the high-volume air sampling stations referenced above Particulate sample collection filters are gathered by site technicians weekly in accordance with the Mills environmental air sampling procedures and are composited on quarterly basis for laboratory analyses The analytical parameters applied to the collected filters are Uranium-Natural activity Thorium-230 activity Radium-226 activity and Lead-210 activity In addition to the requisite nuclide determinations particulate loading is determined for each filter and composited as quarterly mass-loading estimate for review purposes only Fugitive dust standards for the facility are limited by the Mills State of Utah air quality permit which sets 20%visual opacity standard The specific locations of the Mills airborne particulate monitoring stations are depicted on the attached figure High Volume Air Monitoring Stations Attachment The analytical results of radionuclide particulate sampling for each monitoring station operated during this January through June 2009 reporting period are provided under separate sampling station attachment tabs beneath Attachment to this report Tabs 1-6 Each Tab contains graphical illustrations of the nuclide concentrations in log-scale presentation format The graphs display reported data over time since the 1981 inception of the Mills environmental air monitoring program The actual analytical results and associated QAIQC information reported by the laboratory are provided under Attachment It should be noted that for graphical illustration purposes values reported at zero values reported at less than the prescribed detection limit 10 16 uCilml and missing values were plotted as 10 16 uCilml concentrations Where other less than values were indicated e.g data where detection limits varied from 1016 uCiIml the detection limit concentration was utilized for plotting the data point The reader should also note that this graphing convention is not utilized to formulate station average information nor is it intended as precedent for data treatment Instead the intent here is to provide conservative viewable depiction of site airborne nuclide information The conservative nature of this format is founded in the fact that the actual concentration below the detection limit cannot be determined and as such the plotted point is at higher concentration than the actual activity concentration of the collected sample In accordance with the above the following environmental air sample station attachments are provided with this report for the period BHV-1 Nearest Resident Surrogate Monitor Tab BHV-2 North Monitor Tab BHV-3 Background Tab BHV-4 South Monitor Tab BHV-5 West Monitor Tab BHV-6 White Mesa Ute Community Monitor Tab Radionuclide Data Attachment Particulate Loading Data Attachment 1.3 General Observations The results of environmental air monitoring for this semi-annual period indicate that for all nuclides at all monitoring stations airborne radionuclide particulate activity concentrations were well below regulatory Effluent Concentration Limits ECL and the Companies ALARA goals It is noteworthy and expected that Pb-210 concentrations are elevated when compared to the other parent nuclide concentrations i.e U-nat Th 230 and Ra-226 This phenomenon is due to the well-established controlling effect experienced world-wide as result of the ubiquitous presence of radon in the earths atmosphere Accordingly elevated Lead-210 presence in disequilibrium with parent nuclides measured here is not associated with uranium milling operations Radon-222 emanates as decay-chain progeny of the Radium-226 contained in the soil of the earths crnst and is dispersed generally throughout the earths atmosphere The electrically charged short and long-lived decay products of Radon-222 attach to ambient dust particles found naturally in the atmosphere and are carried with the air Lead-2 10 is the longest lived of these decay products and is the decay product of the shorter-lived radon progeny As such it accumulates as an electrical attachment on the natural ambient dust in the atmosphere and is generally measured at elevated activity when compared to local decay-chain parent nuclide activity regardless of uranium milling activity At the Mills BHV air monitoring stations all dust ambient natural and mill derived is collected by the sample filter Because of the natural elevation of Pb-210 accumulated as an attachment to the naturally occurring ambient dust particles collected by the air sampling equipment Lead-210 is commonly elevated and in disequibrium when compared to parent nuclide activity regardless of the Mills presence By way of illustration average ground-level concentrations have been reported for selected States NCRP Report 94 1992 and are summarized in Table below demonstrating elevated Lead-210 activity where no uranium milling operations are located nearby Lead-210 activity concentrations can be expected to be even higher for locations in the western U.S where uranium ore bodies are commonly located Table 1-NCRP Report 94-Global Lead-210 Concentration Example State Pb-21O Concentration uBqIM3 nCi/ml California 600 1.6E-14 Illinois 1500 4.1E-14 Ohio 300 8.1E-15 Massachusetts 700 l.9E-14 1.4 Site Specific Sampling Data The results of airborne particulate monitoring for the period without background subtraction are provided by sampling station and nuclide in Tables 2-5 below Along with these data the tables present comparative Effluent Concentration Limits ECL and the ECL percentage measured at each of the monitoring stations sampled during the period review of these data supports the conclusion that airborne particulate is well controlled at the Mill More specifically in all cases the measured activity concentrations were well within the ECL as well as the Mills ALARA Goal i.e 25%of the ECL In fact the data obtained since program inception in 1981 indicates that only one individual quarterly measurement TH-230 at BHV-5 for the 2h1 Qtr 1996 has ever exceeded the ECL at the Mill With regard to this particular single measurement while it is important to consider and evaluate an individual measurement exceeding the ECL for public dose estimation purposes it is the annualized data that are of primary significance In this instance the annualized Th-230 data for BHV-5 in 1996 are well below the ECL for the annual period In addition to these observations evaluation of the data by comparison to the Mills ALARA Goals reveals that with very few exceptions the gross background inclusive measurements also do not exceed the sites ALARA objectives which have been established at 25%of the ECL i.e only of the 2144 gross nuclide determinations exceeded the Mills self-imposed ALARA threshold It should also be noted that the analytical laboratory maintained Lower Limits of detection consistent with NRC Regulatory Guide 4.14 for this reporting period Table 2-Air Monitoring Station Results U-Nat Comparison to Limits Monitoring Station Vt Qtr.Result uCi/mi 2nd Qtr.Result uCi/mi Effluent Concentration Limit ECL uCi/mi Average Percent ECL BHV-1 2.14E-15 5.97E-17 9E-14 1.22 BHV2 3.96E-16 1.24E-17 9E-14 0.23 BHV-4 1.56E-15 5.56E-17 9E-14 0.90 BHV-5 4.13E-15 2.31E-16 9E-14 2.42 BHV-6 2.77E-15 1.41E-16 9E-14 1.6 Table 3-Air Monitoring Station Results Th-230 Comparison to Limits Monitoring Station 15t Qtr.Result uCi/mi 2M Qtr.Result uCi/mi Effluent Concentration Limit ECL uCi/mi Average Percent ECL BHV-1 1.02E-15 2.35E-16 2E-14 2.09 BHV-2 1.36E-16 1.46E-16 2E-14 0.31 BHV-4 4.57E-16 2.17E-16 2E-14 1.12 BHV-5 1.39E-15 7.79E-16 2E-14 3.61 BHV-6 1.O1E-15 2.76E-15 2E-14 2.13 Table 4-Air Monitoring Station Results Ra-226 Comparison to Limits Monitoring Station 15t Qtr.Result uCi/mi Qtr.Result uCifml Effluent Concentration Limit ECL uCi/mi Average Percent ECL BHV-1 1.OOE-15 2.18E-16 9E-13 0.07 BHV-2 1.07E-16 5.11E-17 9E-13 0.01 BHV-4 2.99E-16 1.51E-16 9E13 0.02 BHV-5 1.41E-15 6.37E-16 9E-13 0.11 BHV-6 7.82E-16 1.81E-16 9E-13 0.05 Table 5-Air Monitoring Station Results Pb-210 Comparison to Limits Monitoring Station Qtr.Result uCi/mi 2n Qtr.Result uCiJml Effluent Concentration Limit ECL uCi/mi Average Percent ECL BHV-1 4.44E-15 5.13E-15 6E-13 0.79 BHV-2 4.81E-15 4.58E-15 6E-13 0.78 BHV-4 4.97E-15 4.47E-15 E-13 0.79 BHV-5 4.66E-15 4.18E-15 6E-13 0.72 BHV-6 6.46E-15 5.76E-15 6E-13 1.02 1.5 Radon-222 Due to the unavailability of monitoring equipment to detect the new 10 CRF Part 20 standard and with the approval of NRC Radon 222 monitoring at BHV stations was discontinued in 1995 Instead Denison demonstrated compliance with these limits and the requirements of R3 13-15-301 by calculation authorized by the NRC and as contemplated by R313-15-302 copy of the Technical Evaluation Report evidencing such approval was enclosed with correspondence to the Division on July 28 2008 This calculation was performed by use of the MILDOS code for estimating environmental radiation doses for uranium recovery operations Strenge and Bender 1981 and more recently in 2003 by use of the updated MILDOS AREA code Argonne 1998 The analysis under both the MILDOS and MILDOS AREA codes assumed the Mill to be processing high grade Arizona Strip ores at full capacity and calculated the concentrations of radioactive dust and radon at individual receptor locations around the Mill The MILDOS and MILDOS AREA codes calculated the combined Total Effective Dose Equivalent TEDE from both air particulate and radon at number of locations including the nearest potential residence the individual likely to receive the highest dose from the licensed operation approximately 1.2 miles north of the Mill These calculations revealed projected doses to the individual likely to receive the highest dose from the licensed operations to be well below the 100 mrem regulatory limit in R313-15-3011a for combined air particulate and radon and well below the ALARA goal of 10 mremlyr for air particulates alone as set out in R313-15-1014 MILDOS AREA modeling was also conducted in support of the Mills 2007 License Renewal Application More specifically SENES Consultants Limited again utilized the MILDOS-AREA code Version 2.20f3 to estimate the dose commitments at various receptor locations for processing of Colorado Plateau 0.25%U308 and 1.5%V205 and Arizona Strip ore 0.637%U308 The process rate was assumed to be 730000 tons per year an average of 2000 tons per day with an average uranium recovery yield of 94%was assumed That modeling showed TEDE of mrem per year at the nearest resident which included the dose from all radionuclide sources including radon The dose from radon itself was therefore fraction of TEDE and well within the regulatory limits While confident that past modeling was sufficiently accurate it was Denison belief that detection equipment had improved since 1995 Accordingly Denison initiated active Radon-222 sampling at its air monitoring stations during the first quarter of 2007 as an augmentation to the calculated results obtained previously by use of the MILDOS computer code While active sampling was initiated during 2007 its purpose was to determine whether or not the sample results can be considered reliable enough to serve as an evaluative tool to track Radon-222 trends for ALARA purposes The radon sample results were not intended as replacement for the calculated values which demonstrated compliance with the regulatory limits As active monitoring progressed throughout 2007 and 2008 Denison became aware that there remained difficulties with the precision and accuracy experienced by alpha track measurements finding that the results were highly variable and most likely effected by background variability and measurement sensitivity As result measurements will no longer be included in this report 2.0 External Radiation Direct Gamma Gamma exposure rate estimates were measured for the first and second quarters of 2008 utilizing passive integrating devices thermoluminescent dosimeters TLDs These dosimeters were co-located at each of the license-required high-volume air sampling stations and at the designated background monitoring station BHV-3 Measurements obtained from location BHY-3 have been designated as background due to BHY-3s remoteness from the Mill site and attendant lack of potential for exposure from the Mill operation i.e BHV-3 is located approximately 3.5 miles west of the Mill site The results of the environmental TLD measurements and semi-annual cumulative above- background data are provided in Table below In addition measurement data obtained at these locations are graphically presented at Attachment to this report Table 6-Environmental TLD Measurements Gamma Monitoring Station Qtr Result mrem Qtr Result mrem Qtr Result Less Background mrem Qtr Result Less Background mrem Cumulative Semi Annual Estimate mrem BUY-i 42.5 33.7 9.1 4.9 14 BHV-2 35.4 33.3 4.5 6.5 BHY-3 33.4 28.8 NA NA NA BUY-4 30.6 28.9 -2.8 0.1 0.1 BUY-S 35.1 31.7 1.7 2.9 4.6 BHV-6 54.7 30.2 21.3 1.4 22.7 Negative values treated as zero for cumulative dose The results for this period indicate that above background measurements for stations BYH-1 BYH-2 BYH-4 BYH-5 and BHY-6 are within regulatory limits The first quarter values indicated at BUY-i and BUY-6 were anomalously elevated and inconsistent with previous data at those locations even during mill processing campaigns It is suspected that in transit exposure is the possible cause for these readings This supposition is supported by the elevated values show for the control badge for the period With the exception of these two readings the exposure rates indicated are approximate to the background values measured at BUY-3 The annual individual member of the public IMOP limit is 100 mremlyr at the property boundary for combined internal and external exposure 3.0 Vegetation Samples Vegetation samples are collected at three locations around the mill periphery The sampling locations are Northeast Northwest and Southwest of the Mill facility The vegetation samples are collected during early spring late spring and fall e.g the growing seasons Graphical log-scale presentation of the vegetative radionuclide uptake observed for this reporting period and results reported by the analytical laboratory including QA/QC information are included at Attachment of this report The early and late spring 2009 data compared to the results of previous are within the variation of previous sampling episodes It should be noted that vegetation samples in some prior years were collected during period of severe drought in San Juan County For this reason sampling was dramatically affected due to the scarcity of available vegetative species at the respective sampling locations Regarding lower limits of detection all analyses indicated detected concentrations 4.0 Stack Sampling Processes involving effluent control equipment and associated stack emissions i.e the yellowcake dryer yellowcake baghouse and the grizzly were operating during the Vt and Quarters of 2009 As reported in the July-December period stack samples collected during the 4-c Quarter of 2008 did not meet required detection limits As such samples were recollected on December 29-30 2008 Due to the fact that Denisons Laboratory Contractor had been unable to meet Denison detection needs despite the collection of an hour iso-kenetic sample Denison sought the services of other laboratories to analyze stack samples from the Mill Toward this end Denison contracted with the Test America Lab in Richland Washington to resolve the detection issues Because Test America also experienced difficulty when they first issued the analytical data in this case related to reporting units Denison required re-evaluation of the data and proper reporting as uCi/sample Since the process with Test America was somewhat experimental in order to determine how to meet the detection needs iterative to assure that proper methods were being employed and because Test America had to re-evaluate the determinations and report results as activity per sample the final results of these samples were not finally issued until June 2009 Accordingly the data were evaluated by Denison as an aspect of this report and are included with the results for Vt and 2nd Quarters of 2009 It should be noted that virtually all nuclides were detected by Test America in each of these sampling episodes The analytical results of stack sampling conducted for the 4th Quarter of 2008 Vt Quarter of 2009 and 2nd Quarter of 2009 are provided in Table below indicating the uCi/cc concentration in the stack emissions and the stacks radionuclide release rate uCi/sec for U-Nat Th-230 Ra-226 and Pb-210 at each of the stacks sampled The actual analytical results reported by the laboratory are provided in Attachment to this report It is important to note that stack effluent concentrations are not comparable to environmental air sampling station ECLs for regulatory compliance purposes The ECL is limit that applies to the site boundary locations and is not applicable to effluents from mill processes on the Mill site These stack release data are more appropriately utilized for dose modeling purposes and dose modeling is not computed for semi-annual reporting purposes Table 7-Stack Effluent Concentrations and Release Rates U-Nat ulCilcc U-Nat uCi/sec Th-230 uCi/cc Th-230 uCi/sec Ra-226 uCi/cc Ra-226 uCilsec Pb-210 uCi/cc Pb-210 uCi/sec 4rh Qtr 2008 North YC Dryer Run 1.59E9 9.88E-4 9.12E-14 5.68E-8 2.57E-14 1.60E-8 2.53E-12 1.58E-6 North YC Dryer Run 2.15E9 l.39E-3 1.03E-13 6.64E-8 3.82E-14 2.47E-8 3.29E-12 2.13E-6 Grizzly Baghouse 7.57E13 4.04E-7 1.85E-13 9.88E-8 1.94E-13 1.03E-7 3.47E-13 1.85E-7 YellowcakeBaghouse 1.28E8 1.28E-2 1.5E 13 1.50E 3.80E-14 3.80E-8 3.80E-14 3.80E Qtr 2009 North YC Dryer Run 1.94E9 8.33E-4 1.14E-12 4.91E-7 5.12E-14 2.20E-8 1.12E-12 4.81E-7 North YC Dryer Run 1.60E9 6.51E-4 7.6E-13 3.1OE-7 3.45E-14 1.41E-8 1.05E-12 4.29E-7 Qtr 2009 North YC Dryer Run 4.49E10 2.31E-4 3.70E-13 1.90E-7 3.61E-14 1.86E-8 5.60E-13 2.88E-7 North YC Dryer Run 9.26E10 6.07E-4 3.59E-13 2.36E-7 2.60E-14 1.71E-8 8.68E-13 5.69E-7 Grizzly Baghouse 1.28E11 6.50E-4 2.32E-13 2.36E-7 1.81E-13 8.12E8 3.46E-13 1.55E-7 YellowcakeBaghouse 5.81E10 6.07E-4 4.IE-12 4.59E-6 2.88E-14 3.22E-8 2.86E-13 3.20E-7 5.0 Surface Water Monitoring Surface water samples were collected from Cottonwood Wash during the 1st and 2nd Quarters of 2009 however Westwater Creek was not able to be sampled because it was dry for the quarterly sampling events The analytical results and graphical representation of the data are included in Attachment to this report In addition Attachment includes the attendant QA/QC information accompanying the laboratorys report Cottonwood Wash is an intermittent ephemeral drainage located southwest and down- gradient of the Mill complex Radionuclide data U-Nat Th-230 and Ra-226 do not indicate trending over time nor are influences from the Mill operations evidenced by the reported data 6.0 Soil Sampling Annual soil samples are collected by the Mill staff during the third quarter of each year and are therefore not reported for this period 6.0 Meteorological Monitoring As in prior reporting periods an independent contractor has prepared the White Mesa Mill Semi-annual Meteorological Monitoring Report for the period of January through June 2009 This information is retained at the Mill site for agency review Attachment VT .1 /1 4-It 20001 2000 ---t--_--J_ 1% 4\L- \\\ %fl If -J1 fj BHV-6 vi -/rL fri 11 It flIesv -\--ct isi 1p yt Denison Mines USA Corp nve UI Ds High Volume -- MMonftodngSfln I-s Property Boundary Reservation BoundarynnesCanyonRim Air Monitor Stations 1. O O E - 1 1 1. O O E - 1 2 BH V - 1 Ra d i o n u c l i d e C o n c e n t r a t i o n s uC i / m i 1. O O E - 1 3 1. O O E - 1 4 cc Cl d- .O O E - 1 1. O O E - 1 6 .O O E - 1 7 1. O O E - 1 8 tJ 1 i v -- CJ LCD CO C\J CO LCD N- CO CsJ CO .1 - LI CO CO C O C O C O C O C O C O C O C O Cl CO Cl C l C l C l C l CO C O C O CO Cl CO CO C O C O C O C O C O C O C O C O C O .S e r i e s l Se r i e s 2 s- S e r i e s 3 Se r i e s 4 Ef f l u e n t Co n c e n t r a t i o n Li m i t 9E - 1 4 uC i / m I AL A R A Go a l 2 . 2 5 E - 1 4 uC i / m I BH V - 1 Ur a n i u m - N a t u r a l C o n c e n t r a t i o n s uC i / m I Pr e 19 9 4 MP C Li m i t 5E - l 2 u C i / m l Pr e 19 9 4 AL A R A Go a l 1 . 2 5 E - 1 2 uC i / m I 1. O O E - 1 1 1. O O E - 1 2 __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1. O O E - 1 3 __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1. 0 0 B 1 4 .O O E - 1 1. 1 E 1 8 Ef f l u e n t Co n c e n t r a t i o n Li m i t 2E - 1 4 uC i / m I BH V - 1 Th o r i u m - 2 3 0 Co n c e n t r a t i o n s uC i I m I AL A R A Go a l 5 E - 1 3 uC i / m I Pr e 19 9 4 MP C Li m i t BE - l 4 u C i / m I 1. O O E - 1 1 1. O O E - 1 2 1. O O E - 1 3 1. O O E - 1 4 1. O O E - 1 7 Ef f l u e n t Co n c e n t r a t i o n Li m i t 9E - 1 uC i / m I AL A R A Go a l 2 . 2 5 E - 1 3 uC i / m I BH V - 1 Ra d i u m - 2 2 6 Co n c e n t r a t i o n s uC i / m i Pr e 19 9 4 MP C Li m i t 2E - 1 2 uC V m l Pr e 19 9 4 AL A R A Go a l 5 E - 1 3 uC i / m I 1. O O E - 1 1 1. O O E - 1 2 1. O O E - 1 3 .O O E - 1 Co di MO E - i 1. O O E - 1 6 i. O O E - 1 7 OO E 18 cb Œ ci se 2 fi 1 qy 2 cj c j c$ t e% e% qe % Ji ce % I ci 1. O O E - 1 1 .O O E - 1 2 1. O O E - 1 3 Ef f l u e n t Co n c e n t r a t i o n Li m i t 6E - 1 3 uC i / m I AL A R A Go a l .5 E - 1 uC i / m I Pr e 19 9 4 MP C Li m i t 4E - 1 2 uC i / m I Pr e 19 9 4 AL A R A Go a l 1 E - 1 2 uC i / m I BH V - 1 Le a d - 2 1 0 Co n c e n t r a t i o n s uC l I m I a1 .O O E - 1 4 Cu -1 .O O E - 1 5 1. O O E - 1 6 .O O E - 1 7 1. O O E - 1 8 ocaha RHO-i PERIOD RNDIND URANIUM PERT RRDRR LLD TONG pDIc lIE 16 MPG THOR EM 23D ORDER DDDNTIRD LLD GDRc IJGIIDR ERROR lIE 1R MPG HARlEM 226 RRDRR GDDNTIDR LLD CORD p33CC ERROR 16-16 MPG 24E 16 LEAD 210 IE 16 RRDDR G000TIRD LLD CORD AGADR ERROR 16 16 MPG 207E IA 020 ID 2E-1D2RRRERI23DEIDRE177DE-D2 R2E-IR DDE 16 1A DDcDI DEE ID REID 12E-R2 ARE-ID iDE 16 2DMaIR2 21REID REiD 432602 2D3RID 1IDRID 3D Jan R2 ERR ID 1E 16 RDDR 02 460 ID 2DE 16 27 Rep R2 40 ID 1616 DDE D2 320611 76616 Jan D3 DDE-ID 00 17 DDE DD DiE ID 34E 16 AApIDD 7DIE 16 DR ID DDE-D2 iDE ID DOOR 17 3D JaR R3 2RDE 16 DE ID 3DE-DD R2E IR 326 16 ODI R3 mple LDDI 3JID 6A DR7R 1D 1E26 DDARDD 114616 4DRE 17 2ARIRA DDE ID OR 17 1R6-D2 DADE ID DIE ID 2Jul64 3106 ID 17 6206-02 ORE-ID 3DDE 16 DRIR4 DADE ID RE 17 26E-D2 1306.16 17E 16 DJan RD DDRE ID DE ID D1E-R2 ARRE 16 2200 16 ApnRD 000EDD DE 17 000ReDD 1236 1D 2R2E-ID Jal RD 717616 DE 17 143602 DOOR-rOD 47R6-1A 3D Rep RD IDE-PR DR ID I.23E 02 iRE PR IRE-ID Jan DR 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O O E - 1 1 BH V - 2 Ra d i o n u c l i d e C o n c e n t r a t i o n s uC i / m i .O O E - 1 2 -1 .O O E - 1 4 Ct Cl dl .O O E - 1 5 1. O O E - 1 3 l. O O E - 1 6 1. O O E - 1 7 .O O E - 1 8 -t ..s 4 4- S e r i e s i Se r i e s 2 -S e r i e s 3 .- S e r i e s 4 Ef f l u e n t Co n c e n t r a t i o n Li m i t 9E - 1 4 uC i / m l BH V - 2 Ur a n i u m Na t u r a l Co n c e n t r a t i o n s uC i / m i AL A R A Go a l 2 . 2 5 E - 1 4 uC i / m i Pr e 19 9 4 MP C Li m i t 5E - l 2 u C i / m l Pr e 19 9 4 AL A R A Go a l .2 5 E - 1 uC i / m 1. O O E - 1 1 .O O E - 1 2 1. O O E - 1 3 1. O O E - 1 4 __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ dl . O O E - 1 5 1. O O E - 1 6 .O O E - 1 7 1. _ c _ E 1 8 Si ct c/ c / 1. O O E - 1 i i. O O E - 1 2 1. O O E - 1 3 Ef f l u e n t Co n c e n t r a t i o n Li m i t 2E - i 4 uC i / m I AL A R A Go a l 5 E - 1 3 uC V m l Pr e 19 9 4 MP C Li m i t 8E - l 4 u C i / m l Pr e 19 9 4 AL A R A Go a l 2 E - 1 4 uC i / m i BH V - 2 Th o r i u m - 2 3 0 Co n c e n t r a t i o n s uC I / m i MO E - i Cu Cl di .O O E - i II II \I jj Si A_ II II i. O O E - i 8 1. O O E - 1 6 i. O O E - 1 7 J\ Il I \ I - 41 IX /a RI \ 11 \ n rI .- -- - It 11 V1 1 It t I\ \. J \S Y A 1 \ .7 T. L SS SS S S S C U S S S _ pq Ef f l u e n t Co n c e n t r a t i o n Li m i t 9E - 1 3 uC i / m I AL A R A Go a l 2 . 2 5 E - 1 3 uC i / m I BH V - 2 Ra d i u m - 2 2 6 Co n c e n t r a t i o n s uC i / m i Pr e 19 9 4 MP C Li m i t 2E - 1 2 uC V m l Pr e 19 9 4 AL A R A Go a l 5 E - 1 3 uC i / m I 1. O O E - 1 1 __ _ _ 1. O O E - 1 2 1. O O E - 1 3 11 . O O E - 1 4 Cl d. 1 . O O E - 1 5 1. O O E - 1 6 ss 1. O O E - 1 7 1. c E 1 8 br D 1. O O E - 1 1 1. O O E - 1 2 .O O E - 1 3 Ef f l u e n t Co n c e n t r a t i o n Li m i t 6E - 1 3 uC i / m i AL A R A Go a l 1. 5 E - 1 3 uC i / m I Pr e 19 9 4 MP C Li m i t 4E - 1 2 uC i / m i Pr e 19 9 4 AL A R A Go a l 1 E - 1 2 uC i / m i BH V - 2 Le a d - 2 1 Co n c e n t r a t i o n s uC i / m i 1. O O E - 1 4 -j 1. O O E - 1 5 .O O E - 1 6 1. O O E - 1 7 .O O E - 1 8 LOCATION 8H03 ANON AM 6461 PERIOD GoES LLD ENDING CONG yCIcE 16 16 MPG TI-IONIUM 236 GROSS 00093155 LLD CONG you SORER IE IA MPG RADIUM 226 GROSS COUNTING LLD LONG IGLOO ENPON rE IN MP LEAD 240 GROSS COUNTING LLD CON pGcc SENOR ID IS MPG 1.67514 DIE IN 25 IS28-SepAl 139610 IS IA 786.42 359516 006-46 IS IN 123604 S02516 356 IS 1616 286662 14Dec81 525 iN IS 16 D4E D3 663616 362616 1616 268504 3A2E IN 172545 ISIS 1815 D2 29Mar82 7.67616 66.16 141E02 116615 649616 15 357604 L275 16 365045 4545 354602 30Jun82 6946 16 76-17 77002 7.736 IN 2396 16 86 17 256661 4.786 46 6NE IA 36 45 386-02 27 Sep82 123045 15-lA 246662 366616 1.35616 1616 420601 873 -46 271616 16-IA 437662 3Jan83 264E IS 9617 528662 55E IS 1.03616 5617 8906-02 188616 5556-17 9617 890643 4Apr83 2146 46 SE 17 4286.43 02E IS 3866 47 55 47 340602 675 15 7636 17 55 17 7.856 D3 30 Jun-83 285546 5617 5706.43 206016 SD 547 8617 687662 224616 864917 1616 1120.42 301-83 270616 5647 5406-03 3306-16 646617 4617 112001 437615 981617 5617 246602 Jnn 84 2785-iS 1646 SS5E02 420616 444616 1646 4.00S-02 6.64647 452648 6647 332603 2Apr84 428616 5547 894603 475616 5486-17 6617 5836-02 457547 563647 8647 2286-03 2Ju 84 278615 SEI7 S5AED2 812516 33SE15 OEeOO 274601 158545 1DDSIA 1545 880 -03 1-08484 2556 16 55 47 5385-03 2556 17 8626 17 40 15 8876-03 00500 1475 45 46 IN 006 u00 2Jan85 215616 05-15 430503 7.55S15 203616 6617 2S2501 2875-IN 144645 15-IS 4446.42 Apr8S 00500 56-17 00500 575 IS 1.756 46 36 17 SS7502 67SE-17 7686-17 86-17 334503 Jul85 3706 47 05 17 746004 8005 45 4.756 44 36 16 3006-01 4805 17 056-45 86-17 245503 30Sep95 532647 5516 18603 218546 463547 3546 7256-02 374615 454617 7617 1655D2 Jan 8DlU0 16 15 8001cr 155-IS 12S IS 76 IN 720502 2465 17 2340 16 26 15 1.080-03 Apr-65 434646 2618 2646-02 505-IA 718S17 5048 500502 374516 845617 4018 18 6-02 30-Jun85 2235-IN 1647 4476-03 325-46 432547 2547 439002 708617 851618 4618 355603 27-Oct85 644516 1548 428602 1745-IN 494647 2548 580002 357616 100645 1618 194502 15Dec86 395615 3048 7425-03 000EuOO 200647 2647 D.OOSoOO 40545 500547 3547 525E03 15Mar87 631615 3048 494602 430615 4006-47 5648 433502 774547 394647 4548 387603 Ii May-87 406646 4048 842603 553617 7006-17 4648 221502 134546 4.00047 4618 6706-03 Sp 87 274645 6048 9486-03 238615 SDO 17 50-17 783603 138645 500617 2017 6006-03 Roe 87 373616 1617 745E3 311616 800617 66-48 104601 1.83045 700617 5647 9495-03 16 Feb-88 2085 10 55 48 6565-02 2316 17 6006 47 26-17 7700-03 200 IA 3000 17 35 47 6006.43 18May88 4536 16 35 48 925603 1.496 46 5046 17 26-17 4676-02 2305 IS 6005 47 25 47 4456-02 15 Avg 88 805616 3548 451602 8.58546 460515 46-17 2006-04 180645 494047 2047 9000-03 14-Nov88 438616 3648 868603 576516 500617 46-17 225504 157515 300547 4547 7896-03 13-Feb 88 S805 15 46 47 1166-02 2856 16 3090 17 45-17 950503 1.555 46 2325 17 35 iS 7765-03 10-May09 SOnS iN 7548 I01E-Sv 2v 700517 75-18 75S S7 13 no 303547 7548 455-43 14-Aug69 4716 15 25 48 8425-03 8606 46 8006 17 85 18 3206-01 205 45 005 IA 85 48 6306-02 13-Nsc89 114515 2647 227E02 4.08616 500617 3618 1366-04 418645 500547 7548 2090-02 12-Feb90 4095-15 4548 248602 325615 7006-17 70-48 408604 374646 900517 3617 4876-02 14-May04 9325-16 ISIS 486602 527516 4005-15 15-iA 176504 397516 100645 1616 1006-02 13 Avg 00 645-15 ly 16 3325-03 S490 16 3046-17 15-IN 835-04 4756 17 2005 47 15 45 204503 12Nov90 6055-15 ISIS 4215-02 254516 6045-17 IS-IN 8800-02 193515 400547 1546 965503 11-Feb91 8725-17 15 46 74503 7005 18 605-17 IS-iA 2.335-03 3335 47 1.905 47 15 46 675-03 13May91 155-iA 1546 232603 3865-15 800547 4546 1296-04 280516 7.04617 1516 1405-02 12Aug91 02y 47 1516 480503 8826-47 500647 1516 284502 755517 500517 1516 83E-03 Nov-94 481517 1516 9525-04 3825-47 204017 2547 127502 294517 200547 2517 127593 40 Fnb 93 154545 1516 3085-03 6826-47 404517 2547 2276-02 440017 340547 2547 704504 11May97 238545 1546 4765-03 753517 404547 2619 2545-02 307517 304517 2519 154603 10Aug82 101515 2518 2020-03 707547 260547 4548 2365-02 280517 420017 2518 1.400-03 ONav9O 520047 3521 104503 365547 240547 4548 4235-02 4785-17 2805-17 3618 8905-04 9Feb03 2305 46 46-22 478503 2975 47 530S 17 45 18 9905-03 6346-17 9005-17 35 18 3155-03 10 Mey 83 045a00 30-19 DOEeOO 7445 17 5046 47 45 19 237602 3496-17 3205-17 35-18 460503 10Aug93 490510 2518 380603 000DaOO 370547 4518 004004 000000 040517 3548 000EoO6 8Nov83 OOSoOO 25 48 004000 0.OOSoOO 5905 17 45 18 OOEoOO 004500 040 IN 35 48 000504 7-Fnb 04 2236 16 25 48 372504 OOSoOO 6045 17 45-16 D0S00 045 IN 2045 iN 35 48 2045-02 9May94 245 -16 25 47 360504 7205 17 8006-17 45-48 2405-04 9895 17 7005 47 35 47 1105-02 Avg-94 9296-17 40 16 995-01 2955 16 2236-15 45 48 987504 3046 IA 3045 47 15 iS 3045-02 7N8e94 921517 4516 494501 235516 3455-17 4548 793004 1.00016 125547 1546 111502 7Feb96 118545 1516 1970-01 9705-47 404546 4548 3.235-04 970517 104516 1516 408002 9May96 940517 4516 157601 120545 100545 4618 4005-04 300516 325517 1516 3005-02 9Avg9S 890047 4516 1485-04 967547 1546 3225-04 439516 394517 4516 05-02 11 Nov 95 283015 15-iN 472500 400545 345047 2516 3AEoOO 923616 734517 25-16 501502 5Feb96 175545 15-lA 292500 865015 494647 4516 269 00 4856-16 S805-17 45-16 540502 6May06 440516 ISIS 2335-04 115546 104547 1516 3836-01 1005-iA NA iS-IS 111002 0-Aug 06 435 10 IS 46 2046-04 2.785 46 3075 47 45 16 9275-01 005-IS NA 15 IS 415-02 5Nov95 406-15 1545 242504 457516 297517 IS-iA 0235-04 104545 NA lOIN 115-02 Feb-97 005-iA 10 IS 67501 005 16 00 15-iA 333504 4065 IS NA IS IS 1415-02 M4y-97 005 15 45 16 575-01 4040 15 NA iS-IS 333604 1.040 45 NA 15 45 1115-02 Ii Aug97 00 IA 15 46 OOEeOO 095-16 2295-17 15 iS 3.535-04 ci 00 iS NA 15 IS 0045 00 5J4n98 255545 1546 425601 4075-16 NA ISIS 3.575-04 500517 NA 1516 555-03 28 Apr98 120545 4516 204604 171515 1235-47 ISIS 5705-Or 428516 758518 1516 4425-02 31 Jet 98 147015 4510 1535-04 424545 277047 1546 441504 339516 321516 1516 3775-02 28Sep98 10646 4615 011151 ci 0545 NA 1516 333604 1.0516 NA 4516 1115-02 29Dec08 254546 IS-IS 2835-04 215516 194547 1516 747501 438516 546618 4516 154502 29 Man 99 1.075 16 IS-iN or as IS 05 46 15 16 3335-04 405 15 ci 05 16 IS-iS 11602 3-Jv 00 245516 15-IS 274004 10645 10645 1516 3335-01 40515 40516 ISiS 0114602 27Sep50 2846 IS IS 3.15-04 415 46 37S 17 IS 16 4705-04 ci 05 15 05 15 40 15 141002 28-Dec00 9205 16 40 IA 5085-04 2506 16 30 17 IS 15 8655-01 2016-IA 2445-17 IS-iS 2335-02 77-MeI-00 en 06 16 IS IS 1.11 504 05 45 NA IS 15 03335-01 0515 NA IS-IN 1.1 502 26-Jun-00 1105-10 45 46 23601 06 46 875 47 IS IS 3335-01 165-IN 425-07 iS-IN 4205-02 25 Sep-00 404516 1515 000500 1.0016 NA 4515 03335-01 or 0016 NA iS-IN 1.115-02 25 Dec-00 250-15 1546 1.40501 10516 NA 4515 03335-01 or 0546 NA lOIS 1145-02 25Mar.41 400545 1616 4115-01 104516 NA IS iS 3330-04 10545 NA ISIS vi 115-92 Jul-01 DOS-iA IS 46 115-01 006 16 NA 15-15 0333504 05 46 NA IS IN 44502 2u Sep-04 ci 045 16 15 46 110-01 045 46 NA 45-15 0333504 ci 05 IS NA 15 46 vi 14000 34 Dec-01 046-16 iS 46 11501 vi 045 16 NA 45-16 3335-UI 05 16 NA IS IN 4.1 45-02 Apr-02 045-15 iS 46 vi 415-01 045 16 NA IS-iS 0333504 05 46 NA IS iS 1145-02 Jul-02 255-iS 10 16 39001 435 46 385-47 15-iS 477504 ci 05 46 NA IS 45 ci 415-02 30 ey-02 ol 005-15 IS IS 1115-04 005 16 NA nE-lA 0333504 05 46 NA IS 46 1115-02 30 Dec-02 4045-IN IS 46 11501 045 46 NA 15-lA 3335-04 lOS IS NA 15 46 or 146-02 34 Mar-03 ci 046-16 iS 46 11501 el.005 16 NA 45-16 3335-UI 05 IA NA IS IN 1115-02 30 Jun-03 046 15 15 46 415-01 vi 005 16 00 15-iA 3335-04 ci 05 15 NA IS 45 1145-02 29Sep03 400515 104045 1115-01 dO05 16 NA 4515 3336-01 10646 NA ISIS 1115-02 29 Dec-03 ol 005-15 005 IS 415-04 005 46 NA IS 15 3335-04 00 IN NA IS IS 145-02 29 Mar-04 045-16 4005 IA 115-04 uI.045 40 NA IS 15 3335-04 105-IS NA iS-IN 14602 27 Jve-04 ci 046 15 1.045 16 1.11501 045 46 NA iS 15 3335-01 ci 05 IS NA IS-IS 415-02 27 Oep 04 ci 005 15 046 15 1145-01 045 16 NA iS 16 3336-01 ci 05-IN NA IS-iN 1115-02 27 Deo-04 ol 045 16 005-15 1145-04 040 IS NA iS 16 o3 33501 ci 05-46 NA iS-IS 4115-02 28 Mar-05 ol 045 16 045-15 111004 005 45 NA IS 46 o3 33504 05-IS 06 45-16 ci 14502 29-Jun05 viOOEi6 4065-16 111504 40054 NA 1546 c3335-0i 40545 NA ISiS 111002 -- -- BH V - 3 Ra d i o n u d i l d e C o n c e n t r a t i o n s uC i / m i 1. O O E - 1 2 1. O O E - 1 3 .O O E - 1 4 It 1. O O E - 1 5 -J 1. O O E - 1 6 1. O O E - 1 7 .O O E - 1 Ek iI f E1 2 2 I 1 j Os 00 0 0 0 00 0 0 0 0 0 0 0 U- N a t M- - - Th - 2 3 0 A- Ra - 2 6 rn - Pb - 2 1 J t_ _ _ _ __ J .4 Ef f l u e n t Co n c e n t r a t i o n Li m i t 9E - 1 4 uC i / m l BH V - 3 Ur a n i u m Na t Co n c e n t r a t i o n s uC i / m i AL A R A Go a l 2 . 2 5 E - 1 4 uC i / m I Pr e 19 9 4 MP G Li m i t 5E - l 2 u G i / m l Pr e 19 9 4 AL A R A Go a l 1 . 2 5 E - 1 2 uC i / m I tO O E - 1 1 -- - - -- ij 1. O O E 1 4 10 0 E 1 6 1. c i E 1 8 qb ojD Ef f l u e n t Co n c e n t r a t i o n Li m i t 2E - 1 4 uC i / m I AL A R A Go a l 5 E - 1 3 uC i / m I BH V - 3 Th o r i u m - 2 3 0 Co n c e n t r a t i o n s uC i / m i Pr e 19 9 4 MP C Li m i t BE - i 4u C i / m T Pr e 19 9 4 AL A R A Go a l 2 E - 1 4 uC i / m I tO O E - 1 1 -- -- - - - - -- i. O O E - 1 2 -- - -- tO O E - 1 3 -- ii E E i E I E E j1 . O O E - 1 4 tz -z c z_ CU __ _- __ _ __ -- Cl -- 1. O O E 5 OO E 16 __ _ _ _ _ 1. O O E - 1 7 Ef f l u e n t Co n c e n t r a t i o n Li m i t 9E - 1 uC i / m I AL A R A Go a l 2 . 2 5 E - 1 3 uC i / m I BH V - 3 Ra d i u m - 2 2 6 Co n c e n t r a t i o n s uC i / m i Pr e 19 9 4 MP C Li m i t 2E - 1 2 uC i / m I Pr e 19 9 4 AL A R A Go a l 5E - 1 3 uC i / m I tO O E - 1 1 -- tO O E - 1 2 1. O O E - 1 3 -j 1. O O E - 1 4 ._ _ _ -- ---1. O O E - 1 6 -- 1. O O E - 1 7 -- - - - 1. O O E - 1 8 II Ij Ef f l u e n t Co n c e n t r a t i o n Li m i t 6E - 1 3 uC i / m I AL A R A Go a l 1. 5 E - 1 3 uC i / m l BH V - 3 Le a d - 2 1 0 Co n c e n t r a t i o n s uC i / m i Pr e 19 9 4 MP C Li m i t 4E - 1 2 uC i / m I Pr e 19 9 4 AL A R A Go a l 1 E - 1 2 uC i / m I 1. O O E - 1 1 1. O O E - 1 2 _- - 1. O O E - 1 3 -- 1. O O E - 1 4 CD -- - 1. O O E 1 5 1. O O E - 1 6 -- -- 1. O O E - 1 7 -- 1. O O E 1 8 57 LOCATION 8H54 A0ANIAM NAT THOR AM 230 PERIOD ORDINO GROSS LCD GONG poA lb 14 MPG 54005 GOARTINO LCD CON p02cc ERROR aD ID MPG RADIOM D26 DRO 00000100 LCD TONG p02cc ARROR lb IN MPG LDAD 210 DROSS GOONTINA LLD GONG pGrrc ERROR ID cH MPG 28 Sep Dl 14Dec81 29Mar82 3D Jan 8D 27 ep-82 Jan DO Apr82 22Jan82 Ocr 82 3Jan44 Apr84 JpI 84 1-Ocr 84 2Jan85 Apr45 Jul 85 30Sep85 Jar 88 Apr84 3D Jan 84 270cr 86 15Dec85 1DM 87 II Map 87 8Sep87 Rca 87 ID FeD 88 18 Map 88 15 Aa8 e4 Sea 88 rOPeS 89 15May89 14 Aug 89 13 Rca 89 12 Feb DO 14 Map DO 13 Aa8 00 12 Rev 80 11 Feb NI 12 Map Dl 4242981 rI-Rca 91 ID Feb 9D II May-92 ID AaD 93 Sea 92 8Feb93 10May93 10444 8a Ray DO i-Feb 94 May-94 Aag-94 Nov-94 7Feb90 9May95 4D 90 11 a95 5Feb06 6May86 5Aug96 4-Sec SR 4-Feb97 5May97 II Aag-97 NJ 98 28Apr98 21-Jul 98 28Sep98 29Mar99 Ja 89 27Sep99 28 Dac 88 27 Mar00 26 Jan-00 26 Sep DO 26 Dec-00 26 Mar-01 Jal-Ol 24 Sep-41 31 Dec-01 Apr-02 Jal 02 20 Sep-02 30 Dc -02 31 Mar-03 30 Jan-03 28 Sap 03 29 Dec-02 28 Mar-04 27-Jan-04 27 Sep-04 27 Dec-04 28Mar05 29Jan06 26 Sep-00 3-Jan-06 3-Apr-06 Jcl-06 520E IS 452E IS ODE-IS 603615 260 14 433010 25b 15 272b ID 254E ID 278E IS 27E IA 2D7E IS 18E 16 2DR-I7 0000 00 92 16 aRE 15 84DE 15 S79E IS 19E 15 460E IS 275E IS asao is 425615 630615 672b IN OlE IS 78E IA 7.56E IS 47E 14 2.47E 15 25Db 18 65Db 15 963b 15 892610 89Db IS 92b 15 29115 67b 16 1876-16 480 -16 77b-16 82b 16 44Db 16 900b 17 207b IA l.73b ID 2.7Db 17 900b 17 0000 00 lOb-16 28Db 16 285b 16 DOlE 17 27Db 16 840617 1450 18 42b 14 19b 14 ASSE ID 78b-16 26b-l5 OOb-16 0Db 16 474b 16 821b 16 232b lb 46Db 18 40Db 18 7.2b 16 511b 18 590b 1R 17Db IS 03b IS cr000 16 DOE 14 265b 16 27P-16 4Sb 16 ci DOE 18 91b 16 38b 16 22Db 16 9Db 16 2300-16 ci ODE 16 2SDb lb cr000 16 al DOE 16 1020 10 cl.DOE IS cl.DOb 18 ci 000 18 ci DAD ID cI DOE 16 47b-16 201b-16 4N4b 16 99E 16 2.76b 16 lb 16 04E-DI lb ID 906b-A2 9b16 212502 6b17 471b01 1016 2S2b-Al Sb ID 866b02 5017 25Db 02 In 16 7.46b-03 -17 50Db 02 lb 16 652b-A7 Sb 17 8540-03 Sb 17 5140-02 Sb 17 8265-02 5b16 106b03 Sb 17 000EnOD 50 17 87b-02 80 ID 291b-02 20 IS l.68b-OI 2b 18 l.16b-0l IbIS lOabOl 1b18 9200D2 2b-r8 5000-02 2E-18 828b 02 6b-r8 87Db 02 8b-r8 28b Dl 6b-18 34b-0l -18 82b-62 30-18 35Db-Or yE 510-01 4b-18 294001 4E-17 4N4b-02 1E18 500E02 Sb 17 ODE-Or 2b 17 NOb-Al 30 18 78b-Or lb 16 1786-01 1b16 384bD2 1b16 582P02 lElA 234b02 ibIS 27ab03 1018 970b02 1016 354b-03 lb ID 266b-02 lb ID 88Db-03 2b 18 1820-03 3b21 414b03 1b22 240b02 2b-22 54Db 04 2b 18 800-03 20 18 D.DDbeDD 20 16 l.83b-Al Pb 17 22b-Ol lb 16 6470-01 lb IS 04b-0l lb 16 17b-DI IbiD 1S7b01 lb 16 242b-0i 10-16 238be0l rb-l6 eebeDl 1b16 758001 1b16 laDbaOO lb 16 227ba00 lb 16 67b-Ol ibiS 167b01 FAA 7.90b-Ol lb 16 29beDD lb 16 NS2E-0l lElS SlIbOl 1b16 452b0l 1b16 8s8bnl lb 16 S88b-0l ib-16 65Db-Al 10-16 89beDO lb 46 ISbeDO lb-IS ci lE-Ol 1E16 2N2b0l lb 16 285b-0l lb 16 252b-0l lb 16 1.610-01 1E16 FAA 1b16 212001 1b16 I54bDl 16 244b01 lb-16 18b-0l 1E16 256b-0l 1016 cI IlbOl lb-16 278b01 lb-16 ci lIE-Al lb-16 ci 41b-0l ib-16 12b-0l lb 16 ci IlbOl lb 16 cI liE Di lb ID vi lIb-Ol lb 16 ci llb-0l lb IS cl.lIb-Al lb IS 63b-0l lb 16 222b-Dl 1016 005001 lb-16 221b01 lb-16 20Db Dl 221b IS 57Db 16 lb 15 O7FeOO 2.54E 15 lDb-16 lb lb 27b-0l 84b Iv 725 IS 2E IS 220001 292b IS 50Db 16 lb 15 9770 01 229E 15 224b lb 16 lOb-Ol 254b 14 lOb IS Ob-IS lob Di 74E IS lob 15 3b IS 502001 1070 15 471b 16 4E IS S25EO2 221b 14 416b IS 2b 14 28Nb-Oi 42b IA lab 15 Ab 47 4D2b DO 2520 IS 20Db iS Ob 16 OlbOl 22Db-Ia 300b IS Ob IS 28IbDi 5Db-ia 7170 IS lb lb S22EcDD 5356 IS 54Db 15 lb 18 258b Dl 268 -14 OSab IS 20 IS 225b01 7580 16 lSb IS Sb 17 252b-AI AD4E IS ISO 17 6b 17 202b 02 2.5Db 14 800 15 20 IS 22101 6520 16 5550 17 Sb 17 217b-01 675E 16 26b IS lb 15 234bD7 20Db 14 090 IS 90 16 250001 iDE 15 14b-16 Pb 15 229b-Oi 13b-i6 88b IS 20 15 PDDb-O2 POE 14 200 IS 2E IS SOD Dl 42b ID lOb-lb Pb 17 ryb Di RSE 16 DOE 17 3b ID 33b-O2 500 14 14b IS 4b-16 lOb-Ol Sib ID 292b 17 4b 17 5025-02 OSE 15 579b IS Nb ID 02 b-A3 5Db IA 80Db-IS 6b 16 N9b-D2 iSObIA 90SE17 IbIS 533b-02 62Db 16 982b-17 8b17 214E02 357b14 1D9E-DS lb IS 459b01 233E IA bOb 16 8b ID 777b-02 110 ID 792b 17 lb lb S55E03 58b 14 09E IS lb IS 98b01 35b IA 65Db 17 46 ID 52b-02 lOb IS SSb 17 8b ii SOb 04 982E IS 42E IS Pb IS 72b Di Sab-16 1.600 16 OR ID 18b-0i 000 18 58b 17 Sb-iD ODE 04 5Db-ia i.a6b IS lb IS 2iE Di 555-17 870 16 lb IA i.18b-OP 35b ID bAD 17 55-17 180-02 DOE-iS 8.76bcOD Nb IS 28b 02 000-16 705 14 Gb lb DOE-al ORE IA lab 16 2b-1D l.18b-DP 48b-lS 1.080 15 Nb 16 35b-02 33b-16 DIE ID Db-17 7.78b-DO DOE IS 1.080 ID Nb 17 65P-02 86b-lS SOb 16 8b lb 9.82b 02 69b 16 8Gb 45 lb-iS 560 Dl DOE 16 lOb 16 2b ID 1.5Db-OP 12b 18 bOb 14 Sb IS ObOE Dl 76Db 15 99Gb Sb-18 2520 Di 24b IS 55Db 17 4b 48 671b02 0Db 14 208b 16 10 186601 8Db ID DOE-ID Ab 18 020 Dl 2Db-IS 0Db 17 Sb 18 iDE Dr lab ID 880 ID lb 15 NOb-DO 7.83b 15 IDE-IA 20 18 251b Dl 2270-I DDE IA lb IS 19b Dl lob 14 20Db ID 3b-18 41E-01 6Db 15 DDb-17 20 17 SRb-0I 290-rH DDE IS ab 17 7Db-DO POE 14 DOE IS 4E-17 SOb-Ol DDE 16 ODb-16 8b 18 97E29 9Db-16 DOE IS 60 18 49 -52 8Db 14 ODD IS lb-iD OSb-Dl 1.180 15 005-16 bE 18 92E-Oi i.12b 15 DOE IS 60 17 SSb-02 21b 14 00 IA 2b 17 DAb 01 122514 100 -15 ibiS 4IDEeOA 22Rb15 200bl6 Ab17 113E-Ai 57014 400Db IbIS 195b01 1500 14 1000-IS ab 18 500beDO 22Db-b 20Db IA 6b18 lObOl 255bl4 IOOEIS 3blD 219b01 aS2bIR 700b-l7 Pb 17 151001 442b-16 50Db 17 2blD POlE-OP 444b14 200b1R 5017 SSSE-0i OSb 14 DOE-lA Pb ID SOD DO 92b-16 DDE 17 2b 17 86b-02 08b 14 DDE IS 4b 17 DOb-Ol 438b14 lDAb-l IbID lacE DI l5FI IDDEIc 2017 750b.02 197b14 200bIA ub17 24cb51 310 14 DDb-16 lb ID 1DEc01 576-15 DOE 16 lb ID P90-Or lOb 14 DDE IA 3E 17 SSb-Ol SOb IS D2b-16 lb 15 52Db-Al 694b-16 lOb ID PA 15 347b-02 Olob 14 0050 IS Sb 16 260501 laD 15 DOD-IS Sb 18 OSEeDO D2b-16 ODD ID 78 18 52b-A2 050 15 DO 14 aR-IS OlE-Ol 580 15 006 iS 9b 18 DSbeOO 25b-i5 DOE IS Gb 18 18b-01 85b IS DAb IS Sb-17 P4b-0l yD2b 15 200015 2b 18 iSDEeOO 402b-i5 20Db IS 8b 18 POlEDI l8NEi4 200bl5 20-17 249b-0l aDSE IS 200EIS 6b18 lODE DO 289b-15 20Db lb 2b47 145E-0l 2D8b 14 200EID 4b-1D O25b-Ol 256bl5 300b15 lb 16 19b DO 222b-IS 200b1A ibiS IDb-Ol 208b 14 400b18 2E-16 081b01 358b 15 800E 17 lb 16 19b DO 5060-IA 00Db 17 lb 15 053b-02 886b 15 20Db 16 2E-16 lIE Dl 1.8Db 15 DDE IS lb-lb 22b-0l 080-IS 000 IS lb 18 400-02 IDE 14 000 15 Pb lb 2-Dab 01 PPSE1D P1OD1D lb-lA 700b-02 628b1D 250017 lb 16 2100-03 41Db 14 100015 Pb 16 SPAbDI 789b16 100016 lb-lb 262b-AI 354b16 900017 bib IDDbO2 140014 100015 2Db 175b-0l 26ib IS 2000 16 lb 16 870b01 ODE IS 800b 17 lb 16 625b02 22Db IA SOAb ID 26 IS 275b01 3Db 16 7.000 17 Ob 17 l.46b Di D8E ID 3.0Db 17 2b 17 i.DOb 02 1Db-lA DOE ID lb 16 44b DI 4Db 16 6.0Db 17 2b ID 8Db 00 DOE IS 4.0Db 17 2b-17 6A5E-02 20b-l4 DOE 17 lb 16 19b DI 95b IS DOE IS Pb 19 SOb-Ol oao ID DOE 17 2b-19 OOb-02 AlE-IA DOE 16 lb 18 0Db 04 255b15 aDObl7 4018 853b-02 4000ID 4bObI7 2E-i8 P2Db-DO bib-IA 200b16 2b17 l9bDOi iSbIS 300E1D Ab18 382b-O2 2S2biD 280b-47 2b18 181b-03 D74b14 20Db 16 Ob ID 280b-Ol D.DDbeDO DDE-iD Ab 18 ODEeDO 2.8Db 17 200-IS 2b 18 4Sb-02 DOD 44 000-16 2b IS 85E-0i 2.760 17 2Db-li Ab 18 20E-03 8.74b 17 DOE 17 2b 18 20b-03 POE 14 000-16 20 ID Sob-Al 2500 17 2900-17 4E 18 803b-O2 000EcOD 27Db 17 Ob 18 000beDO lODE 14 300EIR 2017 IDOEDI l7Hb 16 800017 Ab 18 587002 6DOb-17 18Db 16 3D 18 ODOE-02 MO E - i l i. O O E - 1 2 -j 1 .O O E - 1 Cu di .O O E - 1 BH V - 4 Ra d l i o n u c l i d e Co n c e n t r a t i o n s uC i I m I 1. O O E - 1 3 IA 1 f l / T 2 TT t h MJ 11 4J f t Y c t S f l T4 1. O O E - 1 6 1. O O E - 1 7 i. O O E - 1 8 -S e r i e s i .- S e r i e s 2 aS e r i e s 3 .S e r i e s 4 1. O O E - i 1 .O O E - 1 2 Ef f l u e n t Co n c e n t r a t i o n Li m i t 9E - 1 4 uC i / m l AL A R A Go a l 2 . 2 5 E - 1 4 uC i / m l Pr e 19 9 4 MP C Li m i t 5E - i 2 u C i / m l Pr e 19 9 4 AL A R A Go a l 2 5 E - 1 2 uC i / m I BH V - 4 Ur a n i u m Na t u r a l Co n c e n t r a t i o n s uC i I m I .O O E - 1 1. O O E - 1 7 .O O E - 1 8 1. O O E - 1 3 -a 1 MO E - i Cl di .O O E - 1 It ti AR yr .. / \ I. I II II I\ t It t4 t 1% Il It l \ Il l IT .S I t I It tS I Il It as TX It .W It IT jy Wf l \ R J \ / p l aS Al l \2 It Ef f l u e n t Co n c e n t r a t i o n Li m i t 2E - 1 4 uC i / m l AL A R A Go a l 5 E - 1 3 uC i / m I BH V - 4 Th o r i u m - 2 3 0 Co n c e n t r a t i o n s uC i / m i Pr e 19 9 4 MP C Li m i t 8E - l 4 u C i / m l Pr e 19 9 4 AL A R A Go a l 2 E - 1 4 uC i / m I .O O E - 1 1. O O E - 1 2 .O O E - 1 3 1. O O E - 1 4 1. O O E - 1 7 1. O O E 1 8 e2 r/ o / /c / c / Ef f l u e n t Co n c e n t r a t i o n Li m i t 9E - 1 3 uC i / m I AL A R A Go a l 2 . 2 5 E - 1 3 uC i / m I BH V - 4 Ra d i u m - 2 2 6 Co n c e n t r a t i o n s uC i / m i Pr e 19 9 4 MP C Li m i t 2E - 1 2 uC V m l Pr e 19 9 4 AL A R A Go a l 5 E - 1 3 uC i / m I 1. O O E - i 1 LO O E - 1 2 i. O O E - 1 3 -i . O O E - 1 4 di MO E - i i. O O E - 1 6 1. O O E - 1 7 1. 0 0 E 1 8 Ef f l u e n t Co n c e n t r a t i o n Li m i t 6E - 1 3 uC i / m I AL A R A Go a l 15 E - 1 3 uC i / m I Pr e 19 9 4 MP C Li m i t 4E - 1 2 uC i / m I BH V - 4 Le a d - 2 1 0 Co n c e n t r a t i o n s uC i / m i Pr e 19 9 4 AL A R A Go a l 1 E - 1 2 uC i / m I 1. O O E - 1 1 LO O E - 1 2 tO O E - 1 3 __ __ _ _ __ _ _ _ _ _ __ _ .O O E - 1 4 __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ __ _ _ __ _ _ _ _ _ _ _ _ Cu __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ d- 1 . O O E - 1 5 __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ LO O E - 1 6 tO O E 1 7 1O E 1 8 se R qf e% e% 20 af t 5e R qe % cf l t e% 20 af t LOCATION DEAN ANARIOM AUNT ADORIAM 230 DADIAM 22D PERIOD ENDING ADO LLD GONG lUOyccID-1D MPG ADO COANTING LLD CONG yCAcc ERROR 1D ID MPG GROAN COANTIND LLD CONG p00Cc ARDOR rE iD MPG LEAD -210 GROAN COANTING LLD CONG pG cc ARDOR iD 1D MPG AD Gyp NI 14 Dec Di AN Mar D2 AD Jun-NA DO Any D2 Jun-N3 ADr D3 3D-Jun NA COd NA Jac D4 ADI D4 Jul D4 Dci D4 Jan ND ArNN Jul ND 3D ADD DN Jan ND AcDD DD Jun ND DO-Ocr-DR IN DnA DD ID Mar NA 11 May-NA np-NA Nyu-NA rc NDR.eN IN May-ND IN Au0-NN IN Nnu ND IA PnD ND ID May ND 14 NuN ND IA NyU ND 12 PeN NA 14 May ND 13 NUN ND ID Nac ND 11 PeN NI 13 May NI 12 NUN DI ri-Nyc Ni ID-PeN ND II May N2 ID NUN-ND Nyu NA FeD N3 1D May N3 10 Aug NA Nyc N3 PeN N4 May ON N-Aug N4 Nay-ND PnD NN May NN Aug ND ii Nyu ND FeD ND May ND AUg ND Nod ND PnD NA N-May-NA ri-Aug NA Jan-NN 2N NycNN 2N Any-NO 2N Dny NN 20 Mar NN Jul NN 22 Alp ND ON Dec ND 2A Mar-AN DD Jun ND 26 Nep ON DR Dec-ND 26 Mar-Ni 2Jul01 24 Dep DI Al Dec-Ar Apr02 Jul00 AN Nnp ND AD Dnc-NA 31Mar03 AD Jun AD ON Dnp-N3 2D-Dnc-ND 2N-Mar-N4 22-Jan ND 20 Dnp-N4 2A Dec-AN 20 Mar ND 2N Jun ND 2D Gyp ND Jan ND Apr-ND Jul ND 2440 ID 4N4D IN DaD IN ARID-IN 010-14 NNE 14 Loyl In laD ADDE 1D aNNE 16 DNDN 10 DNA 15 1120 ID liE ID A2E ID ADD ID DOD-ID 476-iN ONE-IN DONE 14 230 14 DAD 14 N400 14 2NNE IN DNNE IN DDNE 14 DDE 14 DI.4 ANE-14 ONE-iN aDD-iN D7E-14 2630-14 DNIE IN DANE IN 4NE 14 IRE 14 DAD IS 111014 DADE ID l.D20 ID ANNE 16 5500 16 Ay46 16 NAIE ID DADE 15 DDE-iD DDE-iD 4NNE ID NANE ID 27ND ID A.INE 16 ODD 15 260615 NDIE IA DIE 1D 210-ID lARD-ID DONE 14 NONE IN 7DE ID 2.D7D ID 303015 N4E 16 y7oE ID DIE 1D NND 16 2N46 15 07E ID NNID 10 ADA-ID DAE-1D NAE-iD 4NE-1D 2060 IN DDE-IN 04E IN 440 ID 27D-i6 402616 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D650eON 167615 ONE-ID ID ID O.D7DeON DANE IN 2ADE ID DO ID D230n01 ADNEI4 0470 17 1016 1DEc02 AD7E ID DN4O ID 1616 10001 610015 461616 1016 27AEyNI 531015 107016 1016 770yOI DO1EIR DN7OIA 1016 RA0001 7.24016 636617 1616 2416 00 7.3ND 16 D.500 17 10-iD 4DEeDD 102015 PAN IA-iD R400eON 2336 IS 7706 IA 10-ID NADeON NDOE 16 066017 10-iN AO7EeDO 4000 10 140-16 10 ID 15DEc01 2406-15 0206-IA 10 ID I7OeON 0606-16 4466-17 1016 DANE 00 A026CD 106-16 1016 i7EyOi 6200-ID 060-iD 16 ID D7DeDI 270-ID 6046-12 10 ID 4.2DDeON D46 10 6610-IA 1616 1DDyON 045616 RIDE-IA 1616 1N2OyOO ADDE-16 7700-17 10 16 S2DyDD rDA-16 4276-17 IN ID 0.520-NI 407616 NNEI7 16 ID A4DeON DONE-ID 1440-17 16 16 604001 3016-ID 3040-iA 1616 i7OeDO 7030-iD 6070-17 ID ID 2S1AeON 103615 446-lA 10 16 N4DeON 020616 0736 1A 16-ID 3000 ON 767016 DONE 17 16-16 DDDE 00 7.410 16 0300 17 46-16 47EeON 0000 16 4.150 17 16-16 RDEeON DDE ID 102617 1616 3416-Ni 154016 DONE IA 1616 0136-01 1.12016 DINE 17 1016 5736-NI 511016 ANN 17 1016 O4EeON 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O O E - 1 8 c1 b c ci t cg se c c2 ei 5e 9 5e 5 e $ 5e t $ t fr 5e qe 2 5e i 9 ce c ej i t pc LOCATION RODS URANIUM SRI ThORIUM 230 PERIOD ENDING DROSS LLD 11 TONO p02cc 1E 16 MPO DROSS COUREISD LLD CONO.poPcc ERROR IF IS MPO DROSS COUNTIND LLD 0060 pCI/CD ERROR iF 16 MPO LEAD 210 DRODS COORTINO LLD 00100 pCI/cc ERROR IF IS MPC 2D OCR SI 14 Dec-61 2D Mar 62 3D-Jun SD 27-Sep82 3Jan83 462162 30Jun83 30cr 83 3Jan64 Apr-44 JuI-D4 0664 Jne-8S 1Apr80 1-JOBS 30-Sap 65 Jan-86 1Apr86 3D-Jun 86 27-Our 86 IS Dec86 IS Mar-67 l1-Mup-87 8Sep87 Nnu-67 12-May-66 15-Aug-68 14 Nnu 66 13-Feb-SD 16-May69 la-Aug 65 13 Nau-69 12-F69-DD 14 MAy-90 13 Aug 95 12 Nna SD 11 FaD DI 13 May-91 12Aug91 11 Sac SI iS-Fob 92 11May92 IS Aug SD Sac-ND FeS-43 10-May-93 10-Aug93 6-Nua-93 7-Feb84 May94 9Aug94 Sac 94 7FeD9S 6May45 8Aug95 II Rnu9D Feb 96 6May96 5Aug96 Rca 96 Feb97 Mey 97 II Aug-97 Jan 98 26Apr96 31Jul96 28 See 98 D8 Dna-SR 29 Mnr 99 33499 22Sep96 D6 Dec99 2/Mar-86 25Jun06 26 Sep-SD 26-Den-DO 25Mar01 3D-SI D4 SapS1 31 Den Dl 1-Apr-SD I-Jul SD 3D Sop-SD 30 Dau-OD 31Mar03 30-Jun-03 DO Dep 03 D9 Dec-SD D9-Ma 04 D7 Jun-04 27Sep04 27 Dec-04 26Mar05 09Jun09 DO Snp-OS Jan-04 3-Apr06 3-Jul-09 D44D IS 4.84E IS I.04E IS 351/5 DIE 14 90E-14 LanI In Lab 262E 16 486F16 666D IS 646 IS IDE IS 111616 2320 16 D.36E 16 7.185 IS DAlE IS 1./SE 14 D9SE 14 DODS 14 D33E 14 340E 14 DOSE SlOE IA D6SD 04 185DI4 786 14 1796 r4 4466-14 676-IA D3F-IA 0616-15 53SF-IA 446E 14 5166 14 9S3S1S lIE IA 6396-16 DOE-IS 7846-IA 376-IA 3S4E16 4./rE 16 SDDF IS 666-16 2865-IA 480E IS 630E IA 0/SD-IS leE 96 160D 1S D6DE IS 9216 ID SIP IS DDID ro 6SF 16 DO4F IA ODD-IA 76D IS D37F IS 3536 IS 64D-I6 6756 16 20615 669D 16 D84E IS 249D lb 076 IS 516 IS D7SDIS 536 IS 563019 948E-I5 0FF IS SOD-lb 1.04615 46D-IS 4.2/F 16 4.SDE IA 6SF 16 74SF 16 I.DAF IS lODE 1S 582F 16 clOSE IS IDE 15 4DOD IS Sic IS 1925-IS cI.DOF 16 I.18E IS 1166 16 1140 18 ci DOD 16 63D 16 8DD-16 8/46-16 0.225 Ia 308516 ISIA A66EDD IL/S 9665-SD 6E-IS DOSS SD SE-17 DDSEDD 10 16 3.42001 SLiD D6OESI SE ID LSSS-0D 1D-16 DDDF-OD 1D 16 l.09E-0I 5617 3.0SF RD 5D17 DDADDD SEll DD2E-62 SD 16 46E-0D SDI7 4DDED3 SF17 15SF-SD DE-16 4SF-Cl 65-16 DOSE-SI DEIS S96E-0r 1617 44/F-SI 1616 A.6AD-SI OF 6.65D-0l OF 16 4.1SF-Or SF16 SD6F-OI 5E16 530D-01 45 19 D.60D Or ucla aSaF-ur 2516 DSAESI DE-18 56E DI 3D IS S9DD-SI 4D17 DDAFDI 1D19 486FDI DFI8 S6DDDD SD ID 08504 3Dr8 9966-01 1D16 4D6DD1 1D16 191D51 ID-16 DODD DI 1DIS ID7EOD ID-lA DA4F-SD IE-16 DDE-SD 15-16 IO7DDD 1D16 lORD-DO ID-16 aDD-SD OF 18 DOD-SI DElI DODD-SD IDDD 4IDDOO 3D-fl 96SF-AD 25 19 66E-SD DD 18 SADE-OD 0c16 53SF-Al DD1D 306600 1S16 445626 rDI6 154601 ID IS JSDcaOO 1D16 366601 1516 2/76-01 ID IS 3.40601 ILlS 786651 IL 16 29OEnSO IS 16 DOSDnOO 1616 556606 ILlS DO7ESI 1516 DS6DD1 1616 DODEeDO 1616 I696nDO 1D16 4/DEc06 lc IS 63RD 01 IF 16 I.I9DeDO 1E16 94SDnDO IDIS AISDIS 1D16 IDODeO0 1616 646Fe0S ID-IA 186501 IF 16 SDODaDO 1616 167600 1616 I.ISFnDO IS 16 l.64DnOS IF 16 A.D9D-01 1E IA SODE-Ol IEIS 9166-91 rD 16 8.DODSI ID IA 4OFaDO ID IA 1.14603 rDr6 5466-01 ID IS lID-SI IDOA ID6DeDO lEnS 4846-SI 1D16 1670-Al 1D IS 69E-01 1616 ul.1l6-01 16 16 DiD-Al 1616 126001 ID IA 2/6-Al 1D IS duE-Si ID IS 3-DOD-Cl ID 16 19D-S1 iSIS 9/lEd ID IA OBOE-Al 1D16 343D01 ISDE1S 411616 1616 5103-Al D76F15 DSSEIS IEID SD/u-Al 0506-IS 949F-IS 36-IS 8D2D DI DAlE-IS 94OF16 7FID 2S4F DO 946F16 602E16 1616 31SF 00 571615 199619 3D17 I6DD-aOO 033615 196616 DF17 777601 2SF-ID 170616 66-17 106630 1.105-IS 309616 Ic 10 3676-01 SAND-lA 986617 SD-17 DDE-SI 1.34E-IS 066-16 7F 17 4/F Dl 9DE 1S 1666 16 7F-Il 6.AOF 01 313616 106616 5017 1.040-Si 671616 186616 SF17 2.046-01 0436-IS 216616 1616 1-016-Si 4.006-16 94Sc 16 SE 16 1.030-01 I.1661S 142016 8617 3.67F-S1 7.046-IS DOSE-IS IS IS D4IFnOS 64F 19 63SF 17 40-IS SSDeOO I9E 15 D.OSF IA DF-ID 730aO0 776c15 3.86516 DFO6 /59000 S35E1S DDOEIS DEll 1/6605 4SOEIS 350DIS SF16 ISOFeDS 8SAEIS 000D1S SF18 585FDO 562615 DOSE IS DEID OO1FnSA 709D II 30SF IS 4D 18 D36FnDC 2960-15 AJF 16 au 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IA l.A4NaOA TA-CADS IRAN IA lOlA TINE Al ANNE 1A lIE IT IN 1A ADA 00 TONE-IA NOTE IT 10 IA TNSE AT 121014 lAN 1A TN IA A4NaAO TJaa-OA TATE1A IN IA NSAAO1 TNNNIA 4AANI7 IN 1A ONADI 3AOE-l5 IATEIA lENA AOOEOI NAAA 14 ANNE 1A TN IS AANNaOO TAEIOA TOTE 14 IN IA TT4NOI TOAD IA TATE IS IN-lA ATE-Al alOON-1A N/A IN IA al 11A0T lIE 14 T5TE 1A TN IS lEAN 00 3Ju/OA TAO-lA 10 IA TAlE Al TAN-lA 3020 17 IN-lA TOE-Al ION -IA ANN IT IN IA TOE-AT IAN-N4 ANN 1A TN IN ATE DO ci 0/IOS SA2N-15 1N1A SNNA1 lANA-lA 3350 1/1015 NA/N Al 1160-1A NiNE 1/1N1A AINET TEND 15 alA IA TO IN TSSOOI Al Jan-AT TIN-lA 10 IA T3NaAO ANN-NA ONE IT 10 IA TIE Al AAN-1A NA IN-IA al I1E-OT TON 14 170 1A TA IN TONE 00 A01-AT OAE-IA 10 1A ANON Dl bE-IA OlIN 17 IN 1A DNA 00 al 00 -IA NA NA IA al 11E-AT lATE-lA TINE 1A TN IA TONE 00 Jul-AT ONE-IA ID IA TOEaOO IAN-lA 5740 1T IN-lA ANN 00 ANN-lA NON IT IN-IA ATE-AT DAN-lN TATE IA TN IA N1NaAO TA ACT-AT TOTE-IA IN IA TAN-Al ATE-IA NOE IT IN-IA TONE-Al IN IA NA IN-IA all 1E AT ONE-IS T.SSE 1A TN IA DANaDO 01 Dna AT TOTE IN 1E IA TAN ANN IA l.30N NA IN-lA 1TNaOO TINE IA OON IT IN IA TAlE-AT NINE-Is ATTN 14 TA IN 5TNaAO SI Mal-AN NONE IA IE IA ANTE-Al TAlE IA TONE IT NE-lA ITNaDO aI A-IA NA IN IA cIlIA AT ANN -IN ONE 14 TO IN ONE Al MTIATOON ANN IN IN NA 000aDO DON NE NON 15 IN-NA OAAaOO NONE IA SAN IT IN IA NOD-AT AlE-IS TTN 14 TO IN TAN 00 OOAn0ON ANTE IA 1E IA ATANaDA ION IA 1540 1T IN-lA NNOAaDO 107010 ASOOIT NE IA AID1 OON-IA TATE 14 TA IA ATEaOO TI Dea-AN ANNE IA 1D1A STNNaOO ITODIN 0540 1A IN-lA 540000 ITANNN 1TAAIT 10 IA lOON-IT lANE IN TONE IA ONIA TNNEaOO 01 MAI AN PA IA 1E 16 OADaOO AID IA lAND 16 ID-lA TONE 00 NTD IA NaTE IT IA IA ANN-AT NAN IA I.PD NA TN IA ANDaOO TOJanOO lAID IA 1A 15 NAN-Al TTEA IA TASE NT ID IA ANON-Al AID IA 1240 1T 10 IA TOTE-AT ATAD IN lATE-IA TA IA NAIN-AN CD Composite of two or more samples Metals Total Digestion Total Metals Lead 210 Radium 226 Thorium Isotopic Same As Above Same As Above Same As Above Same As Above Same As Above As appropriate any exceptions or problems with the analyses are noted in the Laboratory Analytical Report the QA/QC Summary Report or the Case Narrative If you have any questions regarding these tests results please call Report Approved By%P_ca STEVEN CARLSTON EtsERGY IA/O/A fOR/i ENERGYLASORA TORIES INC 2393 Salt Creek Hiqbway 8260 PC Box 3258 Casper WV82602 Toll Free 888235.0515 307235 0515 P/t 307234.1639 casperenergy/ab.com wwwenergylab.com ANALYTICAL SUMMARY REPORT May 14 2009 Denison Mines USA Corp 6425 Hwy 191 Blanding UT 84511 Workorder No C09040342 Project Name 1st Quarter Air Energy Laboratories Inc received the following samples for Denison Mines USA Corp on 4/9/2009 for analysis Sample ID Client Sample ID Collect Date Receive Date Matrix Test C09040342-001 BHV-1 04/06/09 0000 04/09/09 Filter C09040342-002 BHV-2 04/06/09 0000 04/09/09 Filter C09040342-003 BHV-4 04/06/09 0000 04/09/09 Filter C09040342-004 BHV-5 04/06/09 0000 04/09/09 Filter C09040342-005 BHV-6 04/06/09 0000 04/09/09 Filter C09040342-006 Blank 04/06/09 0000 04/09/09 Filter ENERGY Ahi//A /0/ ENERGYLABORA TORIES INC 2393 Sail CreekHiæway 8260 Ra Box3258 Casper$WV82602 Toll Free 888.235.0515 3072550515 En 3072341639 casperenergylab.com s.wwenergylab1com HIGH VOLUME AIR SAMPLING REPORT CLIENT Denison Mines USA Corp REPORT DATE May 142009 PROJECT 1st Quarter Air SAMPLE ID BHV-1 Quarter/Date Sampled Air Volume Radionuclide Concentration pCi/mL Counting Precision ptCi/mL MDC pCi/mL L.L.D Ci/mL Effluent Conc rsCi/mL Effluent Concentration C09040342 001 First Quarter 2009 Air VolumeinmL 1.1SE11 2.14E-15 N/A N/A 1.OOE-16 9.OOE-14 2.38E00 230Th 1.02E-15 1.76E-16 9.47E-1S 1.OOE-16 3.OOE-14 3.39E00 226 lODE-IS 5.94E-17 1.73E-17 1.OOE-16 9.OOE-13 1.1101 210Pb 4.44E-15 l.84E-16 2.38E-16 2.0DB-iS 6.OOE-13 7.40E-0l -4-LLDs are from Reg Guide 4.14 Eflluent Concentration from the NEW 10 CFR Part 20 Appendix Table Year for Natural Uranium Year for Thorium-230 Week for Radium-226 Day for Lead-210 EIERGY AIQfA 10//I ENERGYLABORA TORIES INC 2393 Sail Creek H.fqhway 82601 RU Box 3258 Caspei WY82602 Toil Fj-ee 888.2350515 307235.0515 Fax 307234.1839 caspenenergy/ab.com www.energylab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 05/14/09 1st Quarter Air Collection Date 04/06/09 C09040342-001 DateReceived 04/09/09 Matrix Filter Client Project Lab ID Client Sample ID BHV-1 MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date Dy TRACE METALS Uranium 0.364 mg/filter 0.0003 SW6020 04/1 7109 0018/sml Uranium Activity 247 pCi/Filter 0.2 SW6020 0411 7/09 0018 smi RADIONUCLI DES TOTAL Lead 210 512 pCi/Filter E909.OM 04/28/09 0926 /dm Lead 210 precision 21 pCi/Filter E909.OM 04/28/09 0926 /dm Lead 210 MDC 27 pCi/Filter E909.OM 04/28/09 0926 dm Radium 226 115 pCi/Filter E903.0 04/21/09 1130/trs Radium 226 precision 6.8 pCi/Filter E903.0 04/21/09 1130 trs Radium 226 MDC 2.0 pCi/Filter E903.0 04/21/09 1130 trs Thorium 230 117 pCi/Filter E907.0 04/20/09 1918 /dmf Thorium 230 precision 20 pCi/Filter E907.0 04/20/09 1918 dmf Thorium 230 MDC 1.1 pCi/Filter E907.0 04/20/09 1918/dmf Report RL Analyte reporting limit MCL- Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration EIERV4 -1//Of/A r757rs ENERGYL4SORA TORIES INC 2393 Sail Creak Hibway 82601 RU Box 3256 Caspai WV82602 Toll FrŁ P88/2350515 3072350515 Fax 307234.1639 caspenenIrgy/ab.com www.enargylab.com HIGH VOLUME AIR SAMPLING REPORT CLIENT Denison Mines USA Corp REPORT DATE May 142009 PROJECT 1st Quarter Air SAMPLE ID BHV-2 Quarter/Date Sampled Air Volume Radionuclide Concentration pCi/mL Counting Precision gCi/mL MDC gCiJmL L.L.D pCi/mL Effluent Conc 1tCi/mL Effluent Concentration C09040342-002 First Quarter 2009 Air VolumeinmL 1.36E11 3.96E-16 N/A N/A 1.00E-16 9.00E-14 4.4113-01 230r1 1.38E-16 3.26E-t7 9.48E-18 1.OOE-16 3.OOE-14 4.60E-01 2R..a 1.0746 1.8317 1.32E47 1.00E46 9.00E43 1.18E02 210Pb 4.81E-15 1.65E-16 2.02E-16 2.00E-15 6.00E-13 8.02E-01 LLDs are from Reg Guide 4.14 Effluent Concentration from the NEW 10 CFR Part 20-Appendix Table Year for Natural Uranium Year for Thorium-230 Week for Radiuin-226 Day for Lead-210 EPsERGY LAIORA i-cpu ENERGYLASORA TORIES iNC 2393 Sail CreekHibway 82601 RU Box 3258 Caspp4c WY82602 To/I Free 888.235.0515 30Z235.0515 Fax 307234.1639 casper4energyIab.com wwweprgy/ab.com LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denison Mines USA Corp 1st Quarter Air C09040342-002 BHV-2 Report Date 05/14/09 Collection Date 04/06/09 DateReceived 04/09/09 Matrix Filter MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By TRACE METALS Uranium Uranium Activity 0.0798 mg/filter 54.0 pCi/Filter 0.0003 0.2 SW6020 04117/09 0026 sml SW6020 0417/09 0026 sml RADIONUCLIDES TOTAL Lead 210 Lead 210 precision Lead 210 MDC Radium 226 Radium 226 precision Radium 226 MDC Thorium 230 Thorium 230 precision Thorium 230 MDC 656 22 27 14.5 2.5 1.8 19 4.4 1.3 pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pci/Filter pCi/Filter E909.OM E909.OM E909.OM E903.0 E903.0 E903.0 E907.0 E907.O E907.0 04/28/09 0926 1dm 04/28/09 0926 1dm 04/28/09 0926 dm 04/21/09 1130/trs 04/21/09 1130/trs 04/21/09 1130/trs 04/20/09 1918/dmf 04/20/09 1918 /dmf 04/20/09 1918 /dmf Report RL Analyte reporting limit Definitions QCL Quality control limit MCL Maximum contaminant level ND Not detected at the reporting limit MDC Minimum detectable concentration ENERGYLAHORA TORIES INC 2393 Sail Creek H/iway 82601 EQ Box 3258 Caspet WY82602 ___________To//Free 883235.0515 307235.0515 Fax 307234.1639 caspereriergylab.com www.energylab.comEIERGY HIGH VOLUME AIR SAMPLING REPORT CLIENT Denison Mines USA Corp REPORT DATE May 142009 PROJECT 1st Quarter Air SAMPLE ID BHV-4 Quarter/Date Sampled Air Volume Radionuclide Concentration jtCi/mL Counting Precision ptCi/mL MDC iiCi/mL L.L.D gCi/mL Effluent Conc Ci/mL Effluent Concentration C09040342-003 FirstQuarter2009 Air Volume in mL 1.36E1l .56E-l5 N/A N/A .00E-16 9.00E-14 1.73E00 230.11 4.57E-16 7.SOE-17 6.90E-18 1OOE-16 3.00E-14 1.52E00 22a 2.99E16 3.00E17 l.40E47 I.00E46 9.0013 3.32EM2 210p 4.97E-15 l.66E-16 2.02E-16 2.OOE-15 6.00E-13 8.28E-0I LLDs are from Reg Guide 4.14 Effluent Concentration from the NEW 10 CFR Part 20 Appendix Table Year for Natural Uranium Year for Thorium-230 Week for Radium-226 Day for Lead-2I0 EtERGY i1fORA /0/ ENERG YLABORA TORIES INC 2393 Sail Creek Hiqbway 82501 80 8ox3258 Caspei WV82602 Toll Free888.235.0515 307235 0515 Fax 307234.1639 casperEetergy/abcom wwwenergylab.corn Client Denison Mines USA Corp Project Lab ID Client Sample ID BHV-4 LABORATORY ANALYTICAL REPORT Report Date 05/14/09 Collection Date 04/06/09 DateReceived 04/09/09 Analyses Result Units Qualifiers RL MCL/ QCL Method Analysis Date By TRACE METALS Uranium Uranium Activity 0.312 mg/filter 212 pCi/Filter 5W6020 04/17/09 0030 sml 8W6020 04/17/09 0030 sml RADIONUCLIDES TOTAL Lead 210 Lead 210 precision Lead 210 MDC Radium 226 Radium 226 precision Radium 226 MDC Thorium 230 Thorium 230 precision Thorium 230 MDC 675 pCi/Filter 23 pCi/Filter 27 pCi/Filter 40.6 pCi/Filter 4.1 pCi/Filter 1.9 pCi/Filter 62 pCi/Filter 11 pCi/Filter 0.94 pCi/Filter E909.OM E909.OM E909.OM E903.0 E903.0 E903.0 E907.0 E907.0 E907.0 04/28/09 0926 dm 04/28/09 0926 dm 04/28/09 0926 dm 04/21/09 1130/trs 04/21/09 1130/trs 04/21/09 1130/trs 04/20/09 1918/dmf 04/20/09 1918/dmf 04/20/09 1918 dmf Report RL Analyte reporting limit DefinItIons QCL Quality control limit MDC Minimum detectable concentration MCL Maximum contaminant level ND Not detected at the reporting limit 1st Quarter Air C09040342-003 Matrix Filter 0.0003 0.2 ENERG YLABORA TORIES INC 2393 Saft CreekHiq/zway 82801 P0 Box 3258 Qape WY82602 To//Free 888.235.0515 307235.0515 Fax 307.234.1839 caspeitenergy/aA corn nnstehErfry/ab.cvrnEtSERGY A//ORATQ//E HIGH VOLUME AIR SAMPLING REPORT CLIENT Denison Mines USA Corp REPORT DATE May 142009 PROJECT 1st Quarter Air SAMPLE ID BHV-5 Quarter/Date Sampled Air Volume Radionuclide Concentration pCi/mL Counting Precision ytCi/mL MDC gCiJmL L.L.D pCi/mL Effluent Conc pCi/mL Effluent Concentration C09040342-004 FirstQuarter2009 Air Volume inmL l.36E1I 4.20E-15 N/A N/A 1.OOE-16 9.OOE-14 4.67E4O0 230m 1.41E-I5 2.18E-16 8.I1E-18 I.OOE-16 3.OOE-14 469E0O 226Rs l.43E-I5 6.72E-17 1.56E-17 l.OOE-16 9.OOE-13 1.59E-01 2mpb 4.73E-15 l.64E-16 2.02E-16 2.OOE-15 6.OOE-l3 7.89E-01 LLDs are from Reg Guide 4.14 Effluent Concentration from the NEW 10 CFR Part 20-Appendix Table Year for Natural Uranium Year for Thorium-230 Week for Radium-226 Day for Lead-210 7IERGY OIL/I Ole/F ENERGYLABORA TORIES INC -2393 Sail CreekHibway 8260 P0 Box 3258 Caapei WV82602 Toll Free 888.235.0515 307235 0515 Fax 307234.1639 casperenergy/ab.com wwwenergy/ab.com LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denison Mines USA Corp 1st Quarter Air C09040342-004 BHV-5 Report Date 05/14/09 Collection Date 04/06/09 DateReceived 04/09/09 Matrix Filter TRACE METALS Uranium Uranium Activity 0.844 mg/filter 571 pCi/Filter SW6020 04/17/09 0050 sml SW6020 04/17/09 0050 cml RADIONUCLIDES TOTAL Lead 210 Lead 210 precision Lead 210 MDC Radium 226 Radium 226 precision Radium 226 MDC Thorium 230 Thorium 230 precision Thorium 230 MDC 644 22 27 194 9.1 2.1 192 30 1.1 pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter E909.OM E909.OM E909.OM E903.0 E903.0 E903.0 E907.0 E907.0 E907.0 04/28/09 0926 dm 04/28/09 0926 dm 04/28/09 0926 dm 04/21/09 1130/trs 04/21/09 1130/trs 04/21/09 1130/trs 04/20/09 1918/dmf 04/20/09 1918/dmf 04/20/09 1918/dmf MCL Maximum contaminant level ND Not detected at the reporting limit MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By 0.0003 0.2 Report Definitions RL Analyte reporting limit QCL Quality control limit MDC Minimum detectable concentration EIERGY L/ITTORA TO/YES ENERO YLABORA TORIES INC 2393 Sail Creek Highway 82501 PC Box 3258 Caspec WY82602 To/I Free 888.235.0515 307235.0515 Fax 307.234.1639 caspecenergy/ab.com www.energylab.com HIGH VOLUME AIR SAMPLING REPORT CLIENT Denison Mines USA Corp REPORT DATE May 142009 PROJECT 1st Quarter Air SAMPLE ID BHV-6 Quarter/Date Sampled Air Volume Radionuclide Concentration jtCi/mL Counting Precision pCi/mL MDC tsCi/mL L.L.D gCi/inL Effluent Conc tCi/inL Effluent Concentration C09040342-005 FirstQuarter2009 Air Volume htmL 1.36EI1 eu 2.77E-15 N/A N/A 1.00E-16 9.00E-14 3.08E00 230m 1.01E-I5 1.56E-16 5.92E-18 1.00E-16 3.00E-14 3..38E00 226Ra 7.82E46 4.87E47 l.48E47 l.00E46 9.00E-13 8.68E02 21Pb 6.46E-15 1.77E-16 2.02E-16 2.00E-l5 6.00E-13 1.08E00 -i-LLIYs are from Reg Guide 4.14 Effluent Concentration from the NEW 10 CFR Part 20-Appendix -Table Year for Natural Uranium Year for Thorium-230 Week for Radium-226 Day for Lead-210 EAERGY A/b/tI 101 ENERGYL4BORA TORIES INC 2393 Sail Creek Hibway 82501 P0 Box 3258 Caspe WV82602 To//Free 888.235.0515 307.235 0515 Fax 307234.1639 caspenilenergy/ab.corn Wwfr ehergy/ab corn LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denison Mines USA Corp 1st Quarter Air C09040342-005 BHV-6 Report Date 05/14/09 Collection Date 04/06/09 DateReceived 04/09/09 Matrix Filter Analyses Result Units Qualifiers RL MCU QCL Method Analysis Date By TRACE METALS Uranium Uranium Activity 0.557 mg/filter 377 pCi/Filter SW6020 04/17/09 0059 smi SW6020 04/17/09 0059/sml RADIONUCLIDES TOTAL Lead 210 Lead 210 precision Lead 210 MDC Radium 226 Radium 226 precision Radium 226 MDC Thorium 230 Thorium 230 precision Thorium 230 MDC 879 24 27 106 6.6 2.0 138 21 0.81 pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter E909.OM E909.OM E909.OM E903.0 E903.0 E903.0 E907.0 E907.0 E907.0 04/28/09 0926 dm 04/28/09 0926 dm 04/28/09 0926 dm 04/21/09 1130/trs 04/21/09 1130/trs 04/21/09 1130/trs 04/20/09 1918/dmf 04/20/09 1918 dmf 04/20/09 1918/dmf Report RL Analyte reporting limit Definitions QCL Quality control limit MCL Maximum contaminant level 0.0003 0.2 MDC Minimum detectable concentration ND Not detected at the reporting limit E/ERGY ENERGYLABORA TORIES INC 2393 Sail Creek Hiqbway 82601 P0 Box 3258 Caspei WV82602 Toll Free 888.235.0515 307.235.0515 Fax 307234.1539 casperenergy/ab.com www energy/ab corn HIGH VOLUME AIR SAMPLING REPORT CLIENT Denison Mines USA Corp REPORT DATE May 142009 PROJECT 1st Quarter Air SAMPLE ID Blank Quarter/Date Sampled Air Volume Radionuclide Concentration 1tCiImL Counting Precision MC1/mL MDC gCi/mL L.L.D pCi/mL Effluent Conc sCiImL Effluent Concentration C09040342-006 FirstQuarter2009 Air Volume inmL 1.40E11 9.46E-lS N/A N/A l.OOE-16 9.OOE-14 .05E-02 235m -2.92E-18 5.80E-18 9.17E-18 1.OOE-16 3.OOE-14 -9.74E-03 226Ra 8.95E48 7.00I8 1.53E47 I.0016 9.OOE-13 -9.94E-04 210Pb -3.33E-17 I.l7E-16 l.96E-16 2.OOE-15 6.OOE-13 -5.54E-03 Note This sample uses 140000000 of air volume for comparison purposes LLDs are from Reg Guide 4.14 Effiuent Concentration from the NEW 10 CFR Part 20 Appendix Table Year for Natural Uranium Year for Thorium-230 Week for Radium-226 Day for Lead-210 ENERGYLABORA TORIES INC 2393 Sail Creek Hiqhway 82601 PC Box 3258 Casper WV82602 Toll Free 888235.0515 3072350515 Fax 307234.1639 casperenergy/aAcom vrwwenergy/ab.com LABORATORY ANALYTICAL REPORT Report Date 05/14/09 Collection Date 04/06/09 DateReceived 04/09/09 EIERGY A/lOll/I 0/lit Client Project Lab ID Client Sample ID Blank MCLI Analyses Result Units Qualifiers RL QCL Method Analysis Date By TRACE METALS Uranium Uranium Activity 0.0020 mg/filter 1.3 pCi/Filter SW6020 04/1 7/09 0054 smi 8W6020 04/17/09 0054 sml RADIONUCLIDES TOTAL Lead 210 Lead 210 precision Lead 210 MDC Radium 226 Radium 226 precision Radium 226 MDC Thorium 230 Thorium 230 precision Thorium 230 MDC -5 pCi/Filter 16 pCi/Filter 27 pCi/Filter -1 pCi/Filter pCi/Filter 2.1 pCi/Filter -0.4 pCi/Filter 0.81 pCi/Filter 1.3 pCi/Filter E909.OM E909.OM E909.OM E903.0 E903.0 E903.0 E907.0 E907.0 E907.0 04/28/09 0926 /dm 04/28/09 0926 dm 04/28/09 0926 dm 04/21/09 1130/trs 04/21/09 1130/trs 04/21/09 1130/trs 04/21/09 0658 dmf 04/21/09 0658 dmf 04/21/09 0658 dmf Report RL Analyte reporting limit DefinItIons QCL Quality control limit MCL Maximum contaminant level ND Not detected at the reporting limit Denison Mines USA Corp 1st Quarter Air C09040342-006 Matrix Filter 0.0003 0.2 MDC Minimum detectable concentration Not detected at minimum detectable concentration ENERGYLASORA TORIES INC 2393 Sail CreekHhway 82601 PO Box 3258 Casper WY82602 Toil Free 888.235.0515 307235051B Fax 307234.1639 casperenegyIab.com nvw.energy/abicomEIERGY A//Of/A TO//IL QAIQC Summary Report Client Denison Mines USA Corp Report Date 05/14/09 Project 1st Quarter Air Work Order C09040342 Analyte Result Units RL %REC Low Limit High Limit RPD RPDL1mIt QuaTi Method E903.O Batch 22016 Sample ID C09040342-OOIADUP Radium 226 Radium 226 precision Radium 226 MDC Sample Duplicate 119 pCi/Filter 6.99 pCi/Filter 2.02 pCi/Filter Run BERTHOLD 770-1_090415A 2.9 04/21/09 1130 21.8 Sample ID C09040342-OO6AMS Radium 226 Sample Matrix Spike 158 pCi/Filter 109 Run BERTHOLD 770-1_09041 5A 70 130 04/21/09 1130 Sample ID LCS-22016 Radium 226 Laboratory Control Sample 16.2 pCi/Filter 110 Run BERTHOLD 770-1_09041 5A 70 130 04/21109 1130 Sample ID MB-22016 Radium 226 Radium 226 precision Radium 226 MDC Method Blank -0.3 pCi/Filter 0.1 pCi/Filter 0.4 pCi/Filter Run BERTHOLD 770-1_090415A 04/21/09 1306 Method E907.O Batch 22016 Sample ID C09040342-OO4AMS Sample Matrix Spike Run EGG-ORTEC_090416B 04/20/09 1918 Thorium 230 259 pCi/Filter 160 70 130 Sample response is much larger than spike amount therefore small variances in the sample adversely afcted the recovery The LCS and the RPD of the MSIMSD pair meets acceptance criteria this batch is approved Sample ID C09040342-OO4AMSD Sample Matrix Spike Duplicate Run EGG-ORTEC_090416B 04/20/09 1918 Thorium 230 244 pCi/Filter 121 70 130 5.9 42 Sample ID LCS-22016 Laboratory Control Sample Run EGG-ORTEC_090416B 04/21/09 0658 Thorium 230 5.42 pCi/Filter 117 70 130 Sample ID MB-22016 Method Blank Run EGG-ORTEC_090416B 04/21/09 0658 Thorium 230 -0.02 pCi/Filter Thorium 230 precision 0.2 pCi/Filter Thorium 230 MDC 0.4 pCi/Filter QualIfiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration Spike recovery outside of advisory limits Not detected at minimum detectable concentration Client Denison Mines USA Corp Report Date 05/14/09 Project 1st Quarter Air Work Order C09040342 Analyte Result Units RL %REC Low Limit High Limit RPD RPDL1mIt Qua Method E909.OM Batch Ri 17778 Sample ID C09040342-OO2AMS Sample Matrix Spike Run BECKMAN 6IOOTA_090428A 04/28/09 0926 Lead 210 2080 pCi/Filter 131 70 130 Spike response is outside of the acceptance range for this analysis Since the LCS and the RPD for the MS MSD pair are acceptable the response is considered to be matrix related The batch is approved Sample ID C09040342-OO2AMSD Sample Matrix Spike Duplicate Run BECKMAN 6100TA_090428A 04/28/09 0926 Lead 210 2190 pCi/Filter 141 70 130 5.4 30 Sample ID MB-R117778 Method Blank Run BECKMAN 6100TA.090428A 04/28/09 0926 Lead 210 -0.10 pCi/Alter Lead 210 precision pCi/Filter Lead 210 MDC pCi/Filter Sample ID LCS-R117778 Laboratory Control Sample Run BECKMAN 6100TA_090428A 04/28/09 0926 Lead 210 91.3 pCi/Filter 84 70 130 Method SW6020 Batch 22016 Sample ID MB-22016 Method Blank Run ICPMS4-C_090416B 04/17/09 0006 Uranium 7E-05 mg/filter Sample ID LCS2-22016 Laboratory Control Sample Run ICPMS4-C_090416B 04/17/09 0010 Uranium 0.114 mg/filter 0.00030 114 85 115 Sample ID C09040342-OO5AMS Sample Matrix Spike Run ICPMS4-C_090416B 04/17/09 0103 Uranium 0.622 mg/filter 0.00030 75 125 Sample ID C09040342-OO5AMSD Sample Matrix Spike Duplicate Run ICPMS4-C_090416B 04/17/090107 Uranium 0.615 mg/filter 0.00030 75 125 1.2 20 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit Spike recovery outside of advisory limits ENERGY IA/lOll/il 0/Ill .5 ENERGYLABORA TORIES INC 2393 Sail CreakHihway 8260 RO Box 3258 Caspe WY82602 Toll Free 888285.0515 307235.0515 Fax 307234.1639 casperenergy/aO.com wivwenergy/ab.com QA/QC Summary Report The analyte level was greater than four times the spike level In accordance with the method recovery is not calculated MDC Minimum detectable concentration Not detected at minimum detectable concentration Ch a i n of Cu s t o d y an d An a l y t i c a l Re q u e s t Re c o r d PL E A S E PR I N T - P r o v i d e as mu c h 1n e m a Ce c q n y Na m e .. L t c o r Re p o r t TM p i A d d r e 47 In v o i c e Ad d r e s s Pr o j e c t Na m e PW S Pe r m i t Et c Sa m p l e Or i g i n 1Q . - t St a t e Co n t a c t Na m e Ph o n e / F a x Em a i l 2r - rk M 4 t In v o i c e Co n t a c t Ph o n e Pu r c h a s e Or d e r EP A / S t a t e Co m p l i a n c e Ye s fl No Sa m p l e r Pl e a s e Pr i n t Qu o t e / B o t t l e Or d e r lA _ Sp e c i a l R e p o r t / F o r m a t s EL I mu s t be no t i f i e d pr i o r to sa m p l e su b m i t t a l fo r th e fo l l o w i n g DW A2 L A GS A ED D / E D T E l e c t r o n i c Da t a DP O T w / W W T P Fo r m a t St a t e LE V E L IV OO t h e r EJ N E L A C Em Iv cc -a c\ co C/ .. . MA T R I X Co n t a c t E L I pr i o r to RU S H sa m p l e su b m i t t a l fo r ch a r g e s an d Co o l e r ID s sc h e d u l i n g S e e In s t r u c t i o n Pa g e Co m m e n t s Bc y mp on / c e Ye s Cu s t o d y se a l $1 N Bo t t l e s co o l e r s In t a c t Sig n a t u r e ky Ma t c h SA M P L E ID E N T I F I C A T I O N Na m e Lo c a t i o n In t e r v a l et c Co l l e c t i o n Da t e Co l l e c t i o n Ti m e 13 w I 3u q - 2g 4H C 5r v - b 6f l 1/ 7 o1 /V 4 L3 - A 3t /3 - 4 77 11 __ _ _ __ _ _ 10 ig n cc Cu s t o d y by 4 P l M 1 Da t e / l i m e W2 // q r Re c o r d is n e a bt pr i n t MU S T be 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Si g n e d Sa m p l e Dis p o s a l Re t u r n to cl i e n t La b Dis p o s a l 8T h -_ _ _ _ we t ti c yr 2 4g n a t u r e by pr i n t Re c e i v e d bo r s t o Da t e r n m e sn a t u m In ce r t a i n ci r c u m s t a n c e s s a m p l e s su b m i t t e d to En e r g y La b o r a t o r i e s In c ma y be su b c o n t r a c t e d to ot h e r ce r t i f i e d la b o r a t o r i e s in or d e r to co m p l e t e th e an a l y s i s re q u e s t e d Th i s se r v e s a s no t i c e of th i s po s s i b i l i t y All su b - c o n t r a c t da t a wil l be cl e a r l y no t a t e d on yo u r an a l y t i c a l r e p o r t Vis i t ou r we b si t e at ww w . e n e r e y l a b . c o m fo r ad d i t i o n a l in f o r m a t i o n do w n l o a d a b l e fe e sc h e d u l e fo r m s an d li n k s Pa g e __ _ _ _ of __ _ _ _ ENERGYLABORA TORIES INC 2393 Sail CeekHhway 82601 P0 8ox3258 Caspei kVV82602 Toll Free 885235.0515 307.235.0515 Fax 307.234.1839 casperenergy/ab.com www.energylab.comEIERGY LAI3O/A TORIES ANALYTICAL SUMMARY REPORT August 05 2009 Denison Mines USA Corp 6425 Hwy 191 BlandingUT 84511 Workorder No C09070362 Project Name 2nd Quarter Air Energy Laboratories Inc received the following samples for Denison Mines USA Corn on 7/9/2009 for analysis Sample ID Client Sample ID Coiled Date Receive Date Matrix Test C09070362-001 BHV-1 07/06/09 0000 07/09/09 Filter Composite of two or more samples Metals Total Digestion Total Metals Lead 210 Radium 226 Thorium Isotopic C09070362-002 BHV-2 07/06/09 0000 07/09/09 Filter Same As Above C09070362-003 BHV-4 07/06/09 0000 07/09/09 Filter Same As Above C09070362-004 BHV-5 07/06/09 0000 07/09/09 Filter Same As Above C09070362-005 BHV-6 07/06/09 0000 07/09/09 Filter Same As Above C09070362-006 Blank 07/06/09 0000 07/09/09 Filter Same As Above As appropriate any exceptions or problems with the analyses are noted in the Laboratory Analytical Report the QA/QC Summary Report or the Case Narrative If you have any questions regarding these tests results please call Report Approved By ________________________ Steven Cariston Technical Director ENERGYLASORA TORIES INC 2393 Sail Creek Hiqh way 8260 P0 Box 3258 Caspe1c WY82602 Toll Free 888.235 0515 307235 0515 Fax 307234.1639 casperenergyIab.com wwwenergy/ab.comEPERGY LASORA TORIES HIGh VOLUME AIR SAMPLING REPORT CLIENT Denison Mines USA Corp REPORT DATE August 72009 PROJECT 2nd Quarter Air SAMPLE ID BHV-I Effluent Concentration Quarter/Date Sampled Air Volume C09040342-00l First Quarter 2009 Air Volume in mL I.15E1I Radionuclide naXu 233 226Ra 210Ph Concentration jtCi/mL 2.14E-15 1.02E-15 1.OOE-15 4.44E-15 Counting Precision pCi/mL N/A 1.76E-16 5.94E-17 1.84E-16 MDC pCi/mL N/A 9.47E-I8 I.73E-17 2.38E-16 L.LD MCi/mL 1.OOE-16 1.OOE-16 1.OOE-16 2.OOE-15 Effluent Conc gCiImL 9.OOE-14 3.OOE-14 9.OOE-1 6.OOE-13 2.38E00 3.39E00 1.1 lE-Ol 7.40E-01 Quarter/Date Sampled Air Volume Rndionuclide Concentration pCi/mL Counting Precision tCi/mL MDC gsClImL L.L.D pCi/mL Effluent Conc pCi/mL Effluent Concentration C09070362-00l Second Quartcr2009 Air VolumeinmL I.36EI1 5.97E-17 N/A N/A 1.OOE-16 9.OOE-14 6.63E-02 23Om 2.35E-16 3.27E-17 2.99E-IS I.OOE-16 3.OOE-14 7.84E-01 226Ra 2.18E46 1.35E47 3.57E48 1.00E46 9.OOE43 2.4202 21p 5.13E-15 1.44E-16 1.64E-16 2.OOE-15 6.OOE-13 S.55E-01 LLDs are from Reg Guide 4.14 Effluent Concentration from the NEW 10 CFR Part 20 Appendix Table Year for Natural Uranium Year for Thorium-230 Week for Radium-226 Day for Lead-210 ENERG VLABORA TORIES INC 2393 Sail Creek H/iway 82501 P0 Box 3258 Caspe4c WY82502 Toll Free 888.2350515 3072350515 Fax 307234.1639 casperenergy/ab.com www.energylab.comEfERGY LABO/A TOP/ES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 08/05/09 Project 2nd Quarter Air Collection Date 07/06/09 Lab ID C09070362-001 DateReceived 07/09/09 Client Sample ID BHV-1 Matrix Filter MCL/ Analyses Result Units Qualifiers RL QCL Method Analysis Date By TRACE METALS Uranium 0.01 20 mg/filter 0.0003 SW6020 07/23/09 0614 /ts Uranium Activity 8.1 pCi/Filter 0.2 SW6020 07/23/09 0614/ts RADIONIJCLIDES TOTAL Lead 210 700 pCi/Filter E909.OM 07/28/09 0829 dm Lead 210 precision 20 pCi/Filter E909.OM 07/28/09 0629 1dm Lead 210 MDC 22 pCi/Filter E909.OM 07/28/09 0829 dm Radium 226 29.7 pCi/Filter E903.0 07/23/09 1141 /trs Radium 226 precision 1.8 pCi/Filter E903.O 07/23/09 1141 trs Radium 226 MDC 0.5 pCi/Filter E903.0 07/23/09 1141 trs Thorium 230 32 pCi/Filter E907.0 07/31/09 1505 dmf Thorium 230 precision 4.5 pCi/Filter E907.0 07/31/09 1505 dmf Thorium 230 MDC 0.41 pCi/Filter E907.0 07/31/09 1505 dmf Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration ENERG YLAHORA TORIES INC 2393 Sail CreekHiv/iway 8260 P0 Box 3258 Caspe WY82602 Toil Free 888.235.0515 307.235.0515 Fax-307234.1639 caspererjergy/ab.com wwwenergy/ab.comEIERGY LAIIORA TORIES HIGH VOLUME AIR SAMPLING REPORT CLIENT Denison Mines USA Corp REPORT DATE August 2009 PROJECT 2nd Quarter Air SAMPLE ID BHV-2 Quarter/Date Sampled Air Volume Radionuclide Concentration MCi/mL Counting Precision pCiImL MDC pCiImL L.L.D pCi/mL Effluent Conc ptCilmL Effluent Concentration C09070362-002 SecondQuarter2009 Air Volume in mL 1.361311 eu 1.2413-17 N/A N/A 1.0013-16 9.0013-14 1.3813-02 naTh 4.6413-17 8.54E-18 2.77E-18 1.0013-16 3.OOE-14 1.5513-01 22613k 5.1113-17 6.6013-18 3.3913-18 1.0013-16 9.0013-13 5.6813-03 210p 4.5813-15 1.3913-16 l.64E-16 2.OOE-15 6.0013-13 7.63E-01 Quarter/Date Sampled Air Volume C09040342-002 First Quarter 2009 Air Volume in mL 1.361311 Radionuclide tj 230Th 226Ra 210Pb Concentration pCi/mL 3.96E-16 1.3813-16 1.0713-16 4.8113-15 Counting Precision zCYmL N/A 3.2613-17 1.8313-17 1.65E-16 MDC psCi/mL N/A 9.4813-18 1.3213-17 2.02E-16 L.L.D gCi/mL 1.OOE-16 1.0013-16 1.OOE-16 2.0013-15 Effluent Cone pCi/mL 9.0013-14 3.0013-14 9.0013-13 6.0013-13 Effluent Concentration 4.4113-01 4.60E-01 1.1813-02 8.0213-0 LLDs are from Reg Guide 4.14 Effluent Concentration from the NEW 10 CFR Part 20 Appendix Table Year for Natural Uranium Year for Thorium-230 Week for Radium-226 Day for Lead-210 EISERGY LAL1OR/1TO//ES ENERGYLABORA TON/ES INC -2393 SaIl Creek Hihway 82601 CR0 Box 3258 Caspe WY82602 Toll Free 888.235 0515 307235.0515 Fa.r 307234.1639 caspereneryylab.com wwwvnergylab.com Client Project Lab ID Client Sample ID BHV-2 LABORATORY ANALYTICAL REPORT Report Date 08/05/09 Collection Date 07/06/09 DateReceived 07/09/09 MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By TRACE METALS Uranium Uranium Activity 0.0025 mg/filter 1.7 pCi/Filter 0.0003 0.2 SW6020 07/23/09 0618 ts SW6020 07/23/09 0618 ts RADIONUCLIDES TOTAL Lead 210 Lead 210 precision Lead 210 MDC Radium 226 Radium 226 precision Radium 226 MDC Thorium 230 Thorium 230 precision Thorium 230 MDC 625 19 22 7.0 0.9 0.5 6.3 1.2 0.38 pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter E909.OM E909.OM E909.OM E903.0 E903.0 E903.0 E907.0 E907.0 E907.0 07/28/09 0829 /dm 07/28/09 0829 dm 07/2809 0829 dm 07/23/09 1141 /trs 07/23/091141 /trs 07/23/09 1141 trs 07/31/09 1505 dm1 07/31/09 1505 dmf 07131/09 1505 dmf Report RL Analyte reporting limit Definitions QCL Quality control limit MDC -Minimum detectable concentration MCL Maximum contaminant level ND Not detected at the reporting limit Denison Mines USA Corp 2nd Quarter Air C09070362-002 Matrix Filter ENERGYLABORA TORIES INC p2393 Sail CreekHiihway 8260 -P0 Box3258 Casper WV82602 Toll Free 886.235 0515 307235 0515 Fai 307234.1639 caspenPenergy/ab.com www.energylab.comEIERGY LASORA TORIES HIGH VOLUME AIR SAMPLING REPORT CLIENT Denison Mines USA Corp REPORT DATE August 72009 PROJECT 2nd Quarter Air SAMPLE ID BHV-4 Quarter/Date Sampled Air Volume C09040342-003 First Quarter 2009 Air Volume in mL l.36E1 Quarter/Date Sampled Air Volume Radionuclide Concentration pCi/mL Counting Precision psCi/mL MDC gCi/mL L.L.D Ci/mL Effluent Conc pCi/mL Effluent Concentration C09070362-003 SecondQuarter2009 Air Volume in nIL 1.25Ell 5.67E-17 N/A N/A 1.OOE-16 9.OOE-14 6.30E-02 230Th 2.17E-16 3.1OE-17 4.17E-18 1.OOE-16 3.OOE-I4 7.24E-01 226Ra 1.51E46 1.0917 3.29E18 1.OOE46 9.OOE13 1.68642 21pj 4.47E-15 1.48E-16 1.79E-16 2.OOE-15 6.OOE-13 7.45E-01 Radionuclide Iatu 23O.m 226Ra 21Ph Concentration jtCi/mL 1.56E-15 4.57E-16 2.99E-16 4.97E-15 Counting Precision gCi/mL N/A 7.80E-17 3.OOE-17 1.66E-16 MDC gCi/mL N/A 6.90E-18 1.40E-17 2.02E-l6 LL.D LCi/mL 1.OOE-16 1.OOE-16 1.OOE-16 2.OOE-15 Effluent Conc MCi/mL 9.OOE-14 3.OOE-14 9.OOE-13 6.OOE-13 Effluent Concentration 1.73E00 1.52E00 3.32E-02 8.28E-01 LLDs are from Reg Guide 4.14 Effluent Concentration from the NEW 10 CFR Part 20-Appendix Table Year for Natural Uranium Year for Thorium-230 Week for Radium-226 Day for Lead-210 EtERGY LAIJOIA701IlrS El/ERG VLASORA TORIES INC 2393 Salt Creek Hihway 82601 P0 Box 3258 Caspe1c WY82502 To//Free 888.2350515 3072350515 Fax 307234.1639 caspflenergy/ab.com www energy/at corn LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 08/05/09 2nd Quarter Air Collection Date 07/06/09 C09070362-003 DateReceived 07109109 Matrix Filter Client Project Lab ID Client Sample ID BHV-4 MCI Analyses Result Units Qualifiers RI QCL Method AnalysIs Date By TRACE METALS Uranium 0.0104 mg/filter 0.0003 SW6020 07/23/09 0622 ts Uranium Activity 7.1 pCi/Filter 0.2 SW6020 07/23/09 0622 ts RADIONUCLIDES TOTAL Lead 210 557 pCi/Filter E909.OM 07/28/09 0829 dm Lead 210 precision 18 pCi/Filter E909.OM 07/28/09 0829 dm Lead 210 MDC 22 pCi/Filter E909.OM 07/28/09 0829 dm Radium 226 18.8 pCi/Filter E903.0 07/23/09 1141 /trs Radium 226 precision 1.4 pCi/Filter E903.0 07/23/09 1141 trs Radium 226 MDC 0.4 pCi/Filter E903.0 07/23/09 1141 trs Thorium 230 27 pCi/Filter E907.0 07/31/09 1505dmf Thorium 230 precision 3.9 pCi/Filter E907.0 07/31/09 1505 dmf Thorium 230 MDC 0.52 pCi/Filter E907.0 07/31/09 1505 dmf Report RI Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration ENERGYLASORA TORIES INC P2393 Sail Creek Hiqbway 82601 P0 Box 3258 Caspe WV82602 Toil Free 888.235051ff 3072350515 Fax 307234.1639 casperenergy/ab.com 4Eeftergy/ab.comENERGY LA flORA TORIES HIGH VOLUME AIR SAMPLING REPORT CLIENT Denison Mines USA Corp REPORT DATE August 72009 PROJECT 2nd Quarter Air SAMPLE ID BHV-5 Quarter/Date Sampled Air Volume C09040342-004 First Quarter 2009 Air Volume in mL l.38E11 Radionuclide nalu 23 22% 210Pb Concentration pCi/mL 4.13E-15 1.39E-15 l.41E-15 4.66E-15 Counting Precision pzCi/mL N/A 2.15E-16 6.61E-17 1.62E-16 MDC gCi/mL N/A 7.98E-18 l.54E-17 l.99E-16 L.L.D tCi/mL I.OOE-16 I.OOE-16 .OOE-16 2.OOE-15 Effluent Conc tCi/mL 9.OOE-14 3.OOE-14 9.OOE-13 6.OOE-13 Effluent Concentration 4.59E00 4.62E00 l.56E-0l 7.76E-0l Quarter/Date Sampled Air Volume Radionuclide Concentration tCi/mL Counting Precision 1jCi/mL MDC ptCi/mL L.L.D pCi/mL Effluent Conc ttCi/mL Effluent Concentration C09070362-004 SecondQuarter2009 Air Volume in mL 1.34Ell 2.31E-16 N/A N/A 1.OOE-16 9.OOE-14 2.57E-0l 220rh 7.79E-16 9.81E-17 5.33E-18 I.OOE-16 3.OOE-14 2.60E00 22%6.37E-16 2.12E-17 3.02E-18 l.OOE-16 9.OOE-13 7.08E-02 210p1 4.18E-15 1.38E-16 1.67E-16 2.OOE-15 6.OOE-13 6.96E-0l LLDs are from Reg Guide 4.14 Effluent Concentration from the NEW 10 CFR Part 20-Appendix Table Year for Natural Uranium Year for Thorium-230 Week for Radium-226 Day for Lead-210 ENERGY LASORi1 TORIES ENERO VLABORA TORIES INC 2393SaIE CreekHiqhway 8260 pRO Box 3258 Cespe WV82602 Toll Free 888.235.0515 3072350515 Fa 307234.1639 casperenergy/ab.com Mvw energy/at corn LABORATORY ANALYTICAL REPORT Report Date 08/05/09 Collection Date 07/06/09 DateReceived 07/09/09 Matrix Filter MCLI Analyses Result Units Qualifiers RL QCL Method Analysis Date By TRACE METALS Uranium Uranium Activity 0.0459 mg/filter 31.1 pCi/Filter SW6020 07/23/09 0626/ts SW6020 07/23109 0626 Its RADIONUCLI DES TOTAL Lead 210 Lead 210 precision Lead 210 MDC Radium 226 Radium 226 precision Radium 226 MDC Thorium 230 Thorium 230 precision Thorium 230 MDC 561 19 22 85.7 2.8 0.4 105 13 0.72 pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter E909.OM E909.OM E909.OM E903.0 E903.0 E903.0 E907.0 E907.0 E907.0 07/28/09 0829/dm 07/28/09 0829 1dm 07/28/09 0829 1dm 07123/09 1141 trs 07/23/09 1141 trs 07/23/09 1141 trs 07/31/09 1505 /dmf 07/31/09 1505/dmf 07/31/09 1505 dm1 Report RL Analyte reporting limit Definitions QCL Quality control limit MDC Minimum detectable concentration MCL Maximum contaminant level Client Denisori Mines USA Corp Project 2nd Quarter Air Lab ID C09070362-004 Client Sample ID BHV-5 0.0003 0.2 ND Not detected at the reporting limit ENERGYLASORA TORIES INC P2393 Sail Creak Hbway 82601 P0 Box 3258 Caspe WY82602 To//Free 8882350515 307.235 0515 Fax 307234.1639 casparenergy/ab.com www.energylab.comEAERG L/ISORA TORIES HIGH VOLUME AIR SAMPLING REPORT CLIENT Denison Mines USA Corp REPORT DATE August 72009 PROJECT 2nd Quarter Air SAMPLE ID RHV-6 Quarter/Date Sampled Air Volume C09040342-005 First Quarter 2009 Air Volume in mL l.36E1l Radionuelide natu 230Th 226Ra 210Pb Concentration jtCi/mL 2.77E-I5 l.OIE-15 7.82E-16 6.46E-15 Counting Precision pC/mL NIA l.56E-16 4.87E-17 1.77E-16 MDC paCi/mL N/A 5.92E-I 1.48E-17 2.02E-16 L.L.D izCi/mL I.OOE-16 1.OOE-16 I.OOE-16 2.OOE-i5 Effluent Conc gCi/mL 9.OOE-14 3.OOE-14 9.OOE-13 6.00E-13 Effluent Concentration 3.08E00 3.38E00 8.68E-02 I.08E00 Quarter/Date Sampled Air Volume Radionuclide Concentration pCi/mL Counting Precision gtCi/mL MDC gCiJmL L.L.D.t gCiImL Effluent Conc sCi/mL Effluent Concentration C09070362-005 Second Quarter 2009 Air Volume in mL I.I6EII atu 1.4IE-I6 N/A N/A 1.OOE-16 9.OOE-14 I.56E-01 23OTh 2.67E-16 3.45E-17 3.OOE-18 1.OOE-16 3.OOE-14 8.89E-0I 226p 1.81E-I6 .24E-17 3.55E-I 1.OOE-16 9.00E-13 2.02E-02 21Pb 5.76E-15 I.67E-16 1.93E-16 2.OOE-I5 6.OOE-13 9.61E-01 LLDs are from Reg Guide 4.14 Effluent Concentration from the NEW 10 CFR Part 20-Appendix Table Year br Natural Uranium Year for Thorium-230 Week for Radium-226 Day for Lead-210 ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 82501 PRO Box 3258 Caspe1c WV82602 Toil Free 885.2350515 307235.0515 Fax 307234.1639 casperenergy/ab.com wwwenergy/ab.con LABORATORY ANALYTICAL REPORT Report Date 08/05/09 Collection Date 07/06/09 DateReceived 07/09/09 Matrix Filter E1ERGY TORIES Client Project Lab ID Client Sample ID BHV-6 TRACE METALS Uranium Uranium Activity 0.0241 mg/filter 16.3 pCi/Filter 0.0003 SW6020 07/23/09 0647 ts SW6020 07/23/09 0647 ts RADIONUCUDES TOTAL Lead 210 Lead 210 precIsion Lead 210 MDC Radium 226 Radium 226 precision Radium 226 MDC Thorium 230 Thorium 230 precision Thorium 230 MDC 669 19 22 21.1 1.4 0.4 31 4.0 0.35 pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCI/Filter E909.OM E909.OM E909.OM E903.0 E903.0 E903.0 E907.0 E907.0 E907.0 07/28/09 0829 dm 07/28/09 0829 /dm 07/28109 0829 dm 07/23/09 1141 /trs 07/23/09 1141 /trs 07/23/09 1141 trs 07/31/09 1505 dmf 07/31/09 1505/dmf 07/31/09 1505 dmf Report RL Analyte reporting limit DefinitIons QCL Quality control limit MDC Minimum detectable concentration MCL Maximum contaminant level ND Not detected at the reporting limit Denison Mines USA Corp 2nd Quarter Air C09070362-005 MCL/ Analyses Result Units QualIfiers RL QCL Method Analysis Date By 0.2 EtERGY LARORA TORIES ENERGYLABORA TORIES INC 2393 Salt Creek Hqhway 82601 AC Box 3258 Caspec WY8260 Toll Free 888.235.0515 307235.0515 Far 307.234.1639 casperenergylab.com wwwenergylab.com HIGH VOLUME AIR SAMPLING REPORT CLIENT Denison Mines USA Corp REPORT DATE August 72009 PROJECT 2nd Quarter Air SAMPLE ID Blank Quarter/Date Sampled Air Volume Radionuclide Concentration pCi/mL Counting Precision tCi/mL MDC pCi/mL L.L.D gCi/mL Effluent Conc gsCi/mL Effluent Concentration C09040342-006 First Quarter2009 Air VolumeinmL 1.40511 9.465-18 N/A N/A 1.OQE-16 9.OOE-I4 1.055-02 230.rh -2.925-18 5.805-18 9.175-18 1.005-16 3.005-14 -9.745-03 22 -8.955-18 7.005-18 1.53E-17 1.005-16 9.005-13 -9.945-04 21p -3.335-17 1.175-16 1.96E-16 2.00E-l5 6.005-13 -5.545-03 Note This sample uses 140000000 of air volume or comparison pu rposes Quarter/Date Sampled Air Volume Radionuclide Concentration jzCiImL Counting Precision sCi/mL MDC tCiImL L.L.D pCi/mL Effluent Couc tCiImL Effluent Concentration C09070362-006 Second Quarter 2009 Air Volume in mL 1.40511 hidu 8.07E-18 N/A N/A 1.OOE-16 9.005-14 8.965-03 235.m 2.005-19 2.235-18 2.19E-18 1.005-16 3.005-14 6.685-04 226Ra 1.17E-18 1.96E48 3095-18 1.0016 9.00E13 1.30E04 210Pb -2.38E-17 9.505-17 1.595-16 2.OOE-15 6.005-13 -3.965-03 Note This sample uses 140000000 of air volume br comparison purposes LLDs are from Reg Guide 4.14 Effluent Concentration from the NEW 10 CFR Part 20 Appendix Table Year tot Natural Uranium Year for Thorium-230 Week for Radium-226 Day for Lead-210 ENERO VLABORA TORIES INC 2393 Sail CceekHiqhway 82601 P0 Box 3258W Caspe WY82602 To//Free 888.235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com wwwenergy/ab.coin LABORATORY ANALYTICAL REPORT Report Date 08/05109 Collection Date 07/06/09 DateReceived 07/09/09 Matrix Filter EfERGY LABOR/i TORIES Client Project Lab ID Client Sample ID Blank MCLI Analyses Result Units Qualifiers RL QCL Method Analysis Date By TRACE METALS RADIONUCLIDES TOTAL -3 13 22 0.2 0.3 0.4 0.03 0.31 0.31 pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter SW6020 07/23109 0651 Its SW6020 07/23109 0651 Its E909.OM E909.OM E909.OM E903.0 E903.0 E903.0 E907.0 E907.0 E907.0 07/28/09 0829/dm 0712809 0829 /dm 07/28109 0829 1dm 07/23/09 1141 /trs 07/23/09 1141 /trs 07/23/09 1141 /trs 07/31/09 1505/dmf 07/31/09 1505 dmf 07/31/09 1505 dmf MCL Maximum contaminant level ND Not detected at the reporting limit Not detected at minimum detectable concentration Denison Mines USA Corp 2nd Quarter Air C09070362-006 Uranium Uranium Activity 0.0017 mg/filter 1.1 pCi/Filter 0.0003 0.2 Lead 210 Lead 210 precision Lead 210 MDC Radium 226 Radium 226 precision Radium 226 MDC Thorium 230 Thorium 230 precision Thorium 230 MDC See Case Narrative regarding Pb210 analysis Report Definitions RL Analyte reporting limit QCL Quality control limit MDC Minimum detectable concentration ElERCV ASO/A Oil/ES ENERGYLASORA TORIES INC 2393 Sail Creek Hqhway 82601 PC Box 3258 Caspei bVV82602 Toll Free 888.235d515 307235.0515 Fai 3072341539 casper@energy/aAcojn wwwenergy/ab.com QAIQC Summary Report Client Denison Mines USA Corp Report Date 08/05/09 Project 2nd Quarter Air Work Order C09070362 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method E903.O Batch RA226-3834 Sample ID LCS-23035 Laboratory Control Sample Run BERTHOLD 770-2_090717A 07/23/09 1341 Radium 226 13.8 pCi/Filter 94 70 130 Sample ID MB-23035 Method Blank Run BERTHOLD 770-2_090717A 07/23/09 1341 Radium 226 -0.2 pCi/Filter Radium 226 precIsion 0.1 pCi/Filter Radium 226 MDC 0.4 pCi/Filter Sample ID TAP WATER-MS Sample Matrix Spike Run BERTHOLD 770-2_09071 7A 07/23/09 1341 Radium 226 14.9 pCi/Filter 94 70 130 Sample ID TAP WATER-MSD Sample Matrix Spike Duplicate Run BERTHOLD 770-2_09071 7A 07/23/09 1341 Radium 226 15.4 pCi/Filter 97 70 130 24.8 Method E907.O Batch RA-TH-lSO-0862 Sample ID LCS-23035 Laboratory Control Sample Run EGG-ORTEC_090729A 08/01/09 1307 Thorium 230 2.58 pCi/Filter 115 70 130 Sample ID MB-23035 Method Blank Run EGG-ORTEC_090729A 08/01/09 1307 Thorium 230 -0.1 pCi/Filter Thorium 230 precision 0.07 pCi/Filter Thorium 230 MDC 0.1 pCi/Filter Sample ID TAP WATER-MS Sample Matrix Spike Run EGG-ORTEC_090729A 08/01/09 1307 Thorium 230 2.57 pCi/L 103 70 130 Sample ID TAP WATER-MSD Sample Matrix Spike Duplicate Run EGG-ORTEC_090729A 08/01/09 1308 Thorium 230 2.78 pCi/L 111 70 130 8.1 41 Method E909.OM Batch 23035 Sample ID C09070362-OO6AMS Sample Matrix Spike Run BECKMAN 6100TA_090722A 07/28/09 0829 Lead 210 825 pCI/Filter 77 70 130 Sample ID C09070362-OO6AMSD Sample Matrix Spike Duplicate Run BECKMAN 6IOOTA_090722A 07/28/09 0829 Lead 210 853 pCi/Filter 80 70 130 3.3 30 Sample ID MB-R121871 Method Blank Run BECKMAN 6100TA_090722A 07/28/09 0829 Lead 210 -2 pCi/Filter Lead 210 precision pCi/Filter Lead 210 MDC pCi/Filter Sample ID LCS-R121871 Laboratory Control Sample Run BECKMAN 6IOOTA_090722A 07/28/09 0829 Lead 210 507 pCi/Filter 94 70 130 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration Not detected at minimum detectable concentration ENERGY L/4IIORA TORIES ENERGYLABORA TORIES INC 2393 Salt Creek Highway 82601 P0 Box 3258 Caspei WV82602 _____________To//Free 888.235.0515 302235 0515 Fax 307234.163.9 casperenergyla/.z corn wwwenergy/ab.corn QAIQC Summary Report Client Denison Mines USA Corp Report Date 05/05109 Project 2nd Quarter Air Work Order C09070362 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLIm1t Quai Method SW6020 Batch 23035 Sample ID LCS2-23035 Laboratory Control Sample Run ICPMS2C_090722B 07123/09 0512 Uranium 0.113 mg/filter 0.00030 111 85 115 Sample ID C09070398-OOIAMS Sample Matrix Spike Run 1CPMS2-C_090722B 07/23/09 0712 Uranium 0.0583 mg/filter 0.00030 103 75 125 Sample ID C09070398-OOIAMSD Sample Matrix Spike Duplicate Run ICPMS2-C_090722B 07/23/09 0716 Uranium 0.0580 mg/filter 0.00030 103 75 125 0.4 20 Sample ID MB-23035 Method blank Run ICPM54-C_090805A 0805/09 1526 Uranium SE-OS mg/filter Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration Co m p a n y Na m eTi ff i s Re p o r t Ma i l Ad d r e s s P. O 4a c fl eI a n d 1 r/ / In v o i c e Ad d r e s s Pr o j e c t j l a m e PW S Pe r m i t Et c Sa m p l e Or i g i n St a t e Co n t a c t Na m e Ph o n e / F a x Em a i l PL 4- z z i 1 In v o i c e Co n t a c t Ph o n e Pu r c h a s e Or d e r EP A / S t a t e Co m p l i a n c e Ye s No Sa m p l e r Pl e a s e Pr i n t 4n t e ll . i i . i Qu o t e / B o t t l e Or d e r Sp e c i a l R e p o r t / F o r m a t s EL I mu s t be no t i f i e d pr i o r to sa m p l e su b m i t t a l fo r th e fo l l o w i n g El DW A2 L A GS A ED D / E D T E l e c t r o n i c D a t a PO 1 W I W W T P Fo r m a t OS t a t e DL E V E L I V OO t h e r ON E L A C s_ - wi _ C O O Cl -_ _ _ _ _ _ -C $- MA T R I X t- XX 5 K N __ _ _ _ _ 15 - 4 It Ii Co n t a c t EL I pr i o r to by RU S H sa m p l e su b m i t t a l E5 MS e7 fo r ch a r g e s an d Co o l e r ID E s sc h e d u l i n g - S e e In s t r u c t i o n Pa g e Co m m e n t s o7 D 3 L Re c e l p t i e m p V9 On Ic e Ye s cu s o d y s e r N co o l e r s Bo t t l e s In t a c t si g n a t u r e Ma t c h t_ _ _ _ _ @I _ _ _ SA M P L E ID E N T I F I C A T 1 O N Na m e Lo c a t i o n In t e r v a l et c I_ _ _ _ _ _ _ _ _ 2T I R V 2 vc 5i T h r - 8/ a k __ _ _ _ _ _ _ _ _ _ 10 Co l l e c t i o n Da t e 70 7 Co l l e c t i o n Ti m e NA Tk Ø E i F e e d b y p r i n t ua i T i i i e Sig n a t u r e Cu s t o d y bs I i n t Da t e r r n e Re c o r d Re l l r h i i s h e d by pr i n t Da t e l T k n e a. Re c e i v e d by pr i M Da t e f l i m e Sig n a t u r e MU S T be fi Sig n a t rt o r Da t e l i n e Sig n a t u r e Si g n e d Sa m p l e Dis p o s a l Re t u r n to C l i e n t La b Dis p o s a l 7/ In ce r t a i n ci r c u m s t a n c e s s a m p l e s su b m i t t e d to En e r g y La b o r a t o r i e s In c ma y be su b c o n t r a c t e d to ot h e r er t i f i e d la b o r a t o r i e s in or d e r to co m p l e t e th e an a l y s i s re q u e s t e d Th i s se r v e s a s no t i c e of th i s po s s i b i l i t y All su b - c o n t r a c t da t a wil l be ct e a r j no t a t e d on yo u r an a l y t i c a l r e p o r t Vis i t ou r we b si t e at ww w . e n e r a v i a b . c o m fo r ad d i t i o n a l in f o r m a t i o n do w n l o a d a b l e fe e sc h e d u l e fo r m s an d li n k s Ch a i n of Cu s t o d y an d An a l y t i c a l Re q u e s t Re c o r d PL E A S E PR I N T - Pr o v i d e in . r h in f n r n i a t l n n nn e e l h l n Pa g e /o f Attachment Period January 2009 through March 31 2009 1st Quarter 2009 Page BHV-1 on stream 845%Bl-IV-1 Total Volume 4.07E06 Week Filter Start Stop Stop Start Total Total Loading Per Cent Number Date Date Gross Tare Net Time Time Time Liters mg/m3 On Stream SCFM 7820408 5-Jan-09 12-Jan-09 4.4678 4.4000 0.0678 9211.7 9042.2 10168.8 10510115 0.0065 100.9%36.5 7820402 12-Jan-09 19-Jan-09 4.5064 4.4082 0.0982 9380.4 9211.7 10123.2 10606313 0.0093 100.4%37.0 7825696 19-Jan-09 26-Jan-09 4.7916 4.6293 0.1623 9546.6 9380.4 9975.6 10451669 0.0155 99.0%37.0 7825690 26-Jan-09 2-Feb-09 4.6848 4.6107 0.0741 9546.6 9713.9 -10035.6 10514532 -0.0070 -99.6%37.0 7825684 02-Feb-09 9-Feb-09 4.7227 4.6056 0.1171 9885.3 9713.9 10281.6 10772272 0.0109 102.0%37.0 7825678 09-Feb-09 16-Feb-09 4.6172 4.5549 00623 10052.5 9885.3 10034.4 10513275 0.0059 99.5%37.0 7825672 16-Feb-09 23-Feb-09 4.7095 4.5906 0.1189 10218.1 10052.5 9934.8 10380790 0.0115 98.6%36.9 7825666 23-Feb-09 2-Mar-09 4.7161 4.5867 0.1294 10384.4 10218.1 9979.8 10427810 0.0124 99.0%36.9 7825660 02-Mar-09 9-Mar-09 4.8615 46011 0.2604 10550.7 10384.4 9976.8 10424675 0.0250 99.0%36.9 10 7825654 09-Mar-09 16-Mar09 4.8234 4.5895 0.2339 10743.0 10550.7 11541.6 11961675 0.0196 114.5%36.6 II 7825648 16 Mar-09 24-Mar-09 4.9040 4.4732 0.4308 10887.9 10743.0 8688.6 8955629 0.0481 75.4%36.4 12 7825642 24-Mar-09 30-Mar-09 4.6909 4.4979 0.1930 11054.5 10887.9 9997.8 10305065 0.0187 115.7%36.4 13 7825636 30-Mar-09 6-Apr-09 4.9129 4.5329 03800 11223.0 110543 10114.8 10425660 0.0364 100.3%36.4 Totala 91 2184.0 4.723754 4.544662 0.1791 107822 115220415 0.0164 85.0%36.8 BHV-2 on stream 99.9%BHV-2 Total Volume 4.81 E06 Week Filter Start Stop Stop Start Total Total Loading Per Cent Number Date Date Gross Tare Net Time Time lime Liters mg/m3 On Stream SCFM 7820407 05-Jan-09 12-Jan-09 4.4585 4.3932 0.0653 19402.4 19233.0 10167.0 10508254 0M062 100.9%36.5 7820401 12-Jan-09 19-Jan-09 4.4913 4.3932 0.0981 19571.2 19402.4 10126.8 10610085 0.0092 100.5%37.0 7825695 19-Jan-09 26-Jan-09 4.7962 4.6241 0.1721 19737.3 19571.2 9963.6 10439096 0.0165 98.8%37.0 7825689 26-Jan-09 02-Feb-09 4.7021 4.6079 0.0942 19904.1 19737.3 10009.2 10486872 0.0090 99.3%37.0 7825683 02-Feb-09 09-Feb-09 4.6615 4.5968 00647 20075.5 19904.1 10281.6 10772272 0.0060 102.0%37.0 7825677 09-Feb-09 16-Feb-09 4.6408 43474 0.0934 20242.8 20075.5 10041.6 10.520819 0.0089 99.6%37.0 7825671 16-Feb-09 23-Feb-09 4.7855 4.5941 0.1914 20408.7 20242.8 9955.8 10402732 0.0184 98.8%36.9 7825655 23-Feb-09 02-Mar-09 4.7746 43864 0.1882 20576.2 20408.7 9985.8 10434079 0.0180 99.1%36.9 7825659 02-Mar-09 09-Mar-09 49409 4.6034 0.3375 20741.4 20575.2 9973.8 10421540 0.0324 98.9%36.9 10 7825653 09-Mar-09 16-Mar-09 4.8925 4.5107 0.3818 20933.7 20741.4 11539.8 11959809 0.0319 114.5%36.6 11 7825647 16-Mar-09 24-Mar-09 5.0927 4.5165 0.5762 21078.5 20933.7 8685.6 8952537 0.0644 75.4%36.4 12 7825641 24-Mar-09 30-Mar-09 4.6770 4.4958 0.1812 21245.2 21078.5 9999.6 10306920 0.01 76 115.7%36.4 13 7825635 30-Mar-09 06-Apr-09 4.8533 4.5095 03438 21413.8 21245.2 10119.6 10430608 0.0330 100.4%36.4 Totals 91 2180 4.7513 4.536846 0.2145 130849.8 136245625 0.0209 100.3%36.8 BHV-4 on stream 99.6%BHV-4 Total Volume 4.80E06 Week Filter Start Stop Stop Start Total Total Loading Per Cent Number Date Date Gross Tare Net Time Time Time Liters mgtm3 On Stream SCFM 7820406 06-Jan-09 12-Jan-09 4A345 4.3753 0.0592 9204.6 9037.6 10018.8 10355080 0.0057 99.4%36.5 7825700 12-Jan-09 19-Jan-09 4.6080 4.6005 0.0075 93733 9204.6 10124.4 10607570 0.0007 100.4%37.0 7825694 19-Jan-09 26-Jan-09 4.6129 4.61 07 0.0022 9540.6 9373.3 10038.6 10517676 0.0002 99.6%37.0 7825688 26-Jan-09 02-Feb-09 4.6747 4.6128 0.0619 9705.5 9540.6 9892.8 10364917 0.0060 98.1%37.0 7825682 02-Feb-09 09-Feb-09 4.6971 4.5988 0.0983 9875.3 9705.5 10191.0 10677349 0.0092 101.1%37.0 7825676 09-Feb-09 16-Feb-09 4.6363 4.5854 0.0509 10042.5 9875.3 10029.6 10508246 0.0048 99.6%37.0 7825670 16-Feb-09 23-Feb-09 4.7043 4.6005 0.1038 10210.5 10042.5 10080.6 10533135 0.0099 100.0%36.9 7825664 23-Feb-09 02-Mar-09 46858 4.5783 0.1075 10378.8 10210.5 10096.2 10549435 0.0102 100.2%46.9 7825658 02-Mar-09 09-Mar-09 4.7904 45785 0.2119 10545.2 10378.8 9984.0 10432198 0.0203 99.0%36.9 10 7825652 09-Mar-09 16-Mar-09 41686 4.5175 0.2511 10737.3 10545.2 11529.6 11949238 0.0210 114.4%36.6 11 7825646 16-Mar-09 24-Mar-09 49335 4.5242 0.4093 10879.1 10737.3 8506.8 8768241 0.0467 73.8%36.4 12 7825640 24-Mar-09 30-Mar-09 41438 4.5283 0.2155 11049.2 10879.1 1020.8 10518426 0.0205 118.1%36.4 13 7825634 30-Mar-09 06-Apr-09 4.7895 4.5204 0.2691 11213.4 11049.2 9850.2 10152928 0.0265 97.7%36.4 Totals 91 2184.0 4.698415 4356246 0.1422 130547.4 135934441 0.0140 100.1%36.8 BHV-5 on stream 99.7%BHV-5 Total Volume 4.80E06 Week Filter Start Stop Stop Start Total Total Loading Per Cent Number Date Date Gross Tare Net Time Time lime Liters mglm3 On Stream SCFM 7820405 05-Jan-09 12-Jan-09 4.4671 4.3877 0.0994 19466.2 19299.0 10031.4 10368.103 0.0096 99.5%36.5 7825699 12-Jan-09 19-Jan-09 4.7765 4.6269 0.1496 19635.1 19466.2 10131.6 10615114 0.0141 100.5%37.0 7825693 19-Jan-09 26-Jan-09 4.8169 4.6119 0.2050 19802.2 19635.1 10030.2 10508875 0.0195 99.5%37.0 7825687 26-Jan-09 02-Feb-09 4.7615 4.6221 0.1394 19966 19802.2 9979.8 10456069 0.0133 99.0%37.0 7825681 02-Feb-09 09-Feb-09 4.7689 4.6056 0.1633 20138.4 19968.6 10192.8 10679234 0.0153 101.1%37.0 7825675 09-Feb-09 16-Feb-09 4.6743 4.5851 0.0892 20305.5 20138.4 10026.6 10505103 0.0085 99.5%37.0 7825669 16-Feb-09 23-Feb-09 4.7464 45906 0.1558 20472.8 20305.5 10036.8 10487369 0.0149 99.6%36.9 7825663 23-Feb-09 02-Mar-09 4.7519 4.5722 0.1797 20641.1 20472.8 10095.6 10548808 0.0170 100.2%36.9 7825657 02-Mar-09 09-Mar-09 4.7881 43774 0.2107 20807.7 20641A 9994.2 10442856 0.0202 99.1%36.9 10 7825650 09-Mar-09 16-Mar-09 4.7063 4.4957 0.2106 20999.7 20807.7 11523.0 11942398 0.0176 114.3%36.6 11 7825645 16-Mar-09 24-Mar-09 4.9290 45443 0.3847 21141.7 20999.7 8516.4 8778136 05438 73.9%36.4 12 7825639 24-Mar-09 30-Mar-09 4.7976 4.4928 0.3048 21311.6 21141.7 10192.8 10506058 0.0290 118.0%36.4 13 7825633 30-Mar-09 06-Apr-09 49777 4.5192 0.4585 21476.1 21311.6 9875.4 10178903 0.0450 98.0%36.4 Totals 91 2184.0 4167862 4.556269 0.2116 1306263 136017026 0.0206 100.2%36.8 Period January 2009 through March 31 2009 1st Quarter 2009 Page BHV-6 on stream 99.7%BHV-6 Total Volume 4.80E06 ALL BHV on stream 96.7% Week Filter Start Stop Stop Start Total Total Loading Per Cent Number Date Date Gross Tare Net Time Time Time Liters malm3 On Stream SCFM 10 II 12 13 7820404 7825698 7825692 7825686 7825680 7825674 7825668 7825662 7825656 7825651 7825644 7825638 7825632 05-Jan-09 12-Jan 09 19-Jan-09 26-Jan-09 02-Feb-09 09-Feb-09 16-Feb-09 23-Feb-09 02-Mar-09 09-Mar-09 16-Mar-09 24-Mar-09 30-Mar-09 12-Jan-09 19-Jan-09 26-Jan-09 02-Feb-09 09-Feb-09 16-Feb-09 23-Feb-09 02-Mar-09 09-Mar-09 16-Mar-09 24-Mar-09 30-Mar-09 06-Aor-09 4.4494 4.7164 4.7611 4.6657 4.7175 4.6623 4.71 97 4.7235 4.7601 4.7849 4.8895 4.6531 4.8012 4.3734 4.6203 4.6171 4.6010 4.6019 4.5889 4.5886 4.5927 4.5772 4.4690 4.5251 4.4825 4.5217 0.0760 0.0961 0.1440 0.0647 0.1156 0.0734 0.1311 0.1308 0.1829 0.3159 0.3644 0.1706 0.2795 19114.4 19283.3 19450.5 19616.5 19786.4 19953.6 20121.1 20289.4 20455.9 20648.0 20789.9 20959.9 21124.3 18947.5 19114.4 19283.3 19450.5 19616.5 19786.4 19953.6 20121.1 20289.4 20455.9 20646.0 20789.9 20959.9 10019.4 10128.6 10033.8 9963.6 10192.8 10027.8 10052.4 10097.4 9990.6 11528.4 8511.6 10197.6 9864.6 10.355700 10611971 10512648 10439096 10679234 10.506360 10503669 10550689 10439095 11947995 8773189 10511005 10.167.771 0.0073 0.0091 0.01 37 0.0062 0.0108 0.0070 0.0125 0.0124 0.01 75 0.0264 0.0415 0.01 62 0.0275 99.4% 100.5% 99.5% 98.8% 101 .1% 99.6% 99.7% 100.2% 99.1% 114.4% 73.9% 118.0% 97.9% Totals 91 2184.0 4.715723 4.550723 0.1650 130608.6 135.998420 0.0160 100.2%36.8 36.5 37.0 37.0 37.0 37.0 37.0 36.9 36.9 36.9 36.6 36.4 36.4 36.4 Week Start Stop Blanks Date Date Net 10 11 12 13 7820403 7825697 7825691 7825685 7825679 7825673 7825667 7825661 7825655 7825649 7825643 7825637 7825631 05-Jan-09 12-Jan-09 19-Jan-09 26-Jan-09 02-Feb-09 09-Feb-09 16-Feb-09 23-Feb-09 02-Mar-09 09-Mar-09 16-Mar-09 24-Mar-09 30-Mar-09 2-Jan-09 19-Jan-09 26-Jan-09 02-Feb-09 09-Feb-09 16-Feb-09 23-Feb-09 02-Mar-09 09-Mar-09 16-Mar-09 24-Mar-09 30-Mar-09 06-Apr-09 4.3665 4.61 86 4.6060 4.6189 4.5989 4.5909 4.5727 4.5828 4.5693 4.4737 4.4917 4.5205 4.4876 Totals 91 2184.0 4.5460 Energy Laboratories Inc Wo rkorde Receipt Checklist Denison Mines USA Corp C09040342 Login completed by Kimberly Humiston Date and Time Received 419/2009 930 AM Reviewed by Received by pb Reviewed Date Carrier name 2nd Day Air Shipping container/cooler in good condition Yes No Not Present custody seals intact on shipping container/cooler Yes No fl Not Present Custody seals intact on sample bottles Yes No Not Present Chain of custody present Yes No fl Chain of custody signed when relinquished and received Yes No Chain of custody agrees with sample labels Yes No Samples in proper container/bottle Yes No Sample containers intact Yes No Sufficient sample volume for indicated test Yes No All samples received within holding time Yes No Container/Temp Blank temperature N/AC Water VOA vials have zero headspace Yes No No VOA vials submitted Water pH acceptable upon receipt Yes No Not Applicable Contact and Corrective Action Comments None EIERGY 1IORA 10/lIES ENERGVLA BORA TORIES INC 2393 Sail Creek Hibway 82601 AC 8ox3258 Caspe WY82602 To//A-es 888.2350515 307235.0515 En 307234.1639 casperenergy/atxcom wintenergy/ab.com Denison Mines USA Corp 1st Quarter Air Date 14-May-09 CASE NARRATIVE CLIENT Project Sample Delivery Group C09040342 ORIGINAL SAMPLE SUBMITTALS All original sample submittals have been returned with the data package SAMPLE TEMPERATURE COMPLIANCE 4C 2C 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 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 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 days SOIL/SOLID SAMPLES All samples reported on an as received basis unless otherwise indicated ATRAZINE SIMAZINE AND PCB ANALYSIS USING EPA 505 Data for Atrazine and Simazine are reported from EPA 525.2 not from EPA 505 Data reported by ELI using EPA method 505 reflects the results for seven individual Aroclors When the results for all seven are ND not detected the sample meets EPA compliance criteria for PCB monitoring SUBCONTRACTING ANALYSIS Subcontracting of sample analyses to an outside laboratory may be required If so ENERGY LABORATORIES will utilize its branch laboratories or qualified contract laboratories for this service Any such laboratories will be indicated within the Laboratory Analytical Report BRANCH LABORATORY LOCATIONS eli-b Energy Laboratories Inc Billings MT eli-g Energy Laboratories Inc Gillette WY eli-h Energy Laboratories Inc Helena MT eli-r Energy Laboratories Inc Rapid City SD eli-t Energy Laboratories Inc College Station TX CERTIFICATIONS USEPA WY00002 Radiochemical WY00937 FL-DOH NELAC E87641 Radiochemical E871017 Califomia 021 I8CA Oregon WY200001 Utah 3072350515 Virginia 00057 Washington Cl 903 ISO 17025 DISCLAIMER The results of this Analytical Report relate only to the items submitted for analysis ENERGY LABORATORIES INC CASPERWY 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 ELIs 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.energyIab.com THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT Page Week Fitter Start Stop Stop Start Total Total Loading Per Cent Number Date Date Gross Tare Net Time Time lime Liters mgkn3 On Stream SCFM 7825628 06-Apr-09 13-Apr-09 4.7055 4.4997 0.2058 11378.3 11213.4 9899.4 10231673 0.0201 98.2%36.5 7825622 13-Apr-09 20-Apr-09 5.3665 4.5120 0.8545 11532.6 11378.3 9256.8 9698565 0.0881 91.8%37.0 7825616 20-Apr-09 27-Apr-09 4.8209 4.5027 0.3182 11693.9 11532.6 9673.8 10135466 0.0314 96.0%37.0 7825610 27-Apr-09 04-May-09 4.7776 4.5 149 0.2627 11798.0 11693.9 6250.2 6548480 0.0401 62.0%37.0 7825604 04-May-09 11-May-09 4.5805 4.4770 0.1035 11872.6 11798.0 4476.0 4689610 0.0221 44.4%37.0 8154097 11-May-09 18-May-09 4.8198 4.5314 0.2884 12040.6 11872.6 10075.8 10556651 0.0273 100.0%37.0 8154091 18-May-09 25-May-09 4.9659 4.5088 0.4571 12229.5 12040.6 11338.8 11847817 0.0386 112.5%36.9 8154085 25-May-09 01-Jun-09 4.7400 4.4933 0.2467 12377.6 12229.5 8886.6 9285534 0.0266 88.2%36.9 8154079 01-Jun-09 08-Jun-09 4.7253 4.4883 0.2370 12535.7 12377.6 948t.8 9907454 0.0239 94.1%36.9 10 8154073 08-Jun-09 15-Jun-09 4.6889 4.4876 0.2013 12703.6 12535.7 10077.6 10444390 0.0193 100.0%36.6 11 8154067 15-Jun-09 22-Jun-09 4.6567 4.5081 0.1486 12871.1 12703.6 10049.4 10358251 0.0143 99.7%36.4 12 8154061 22-Jun-09 29-Jun-09 4.6433 4.5030 0.1403 13039.8 12871.1 10121.4 10432463 0.0134 100.4%36.4 13 8154055 29-Jun-09 06-Jul-09 4.6219 4.4583 0.1636 13208.5 13039.8 10122.6 10433700 0.0157 100.4%36.4 Totals 91 2180 4.777908 4.498854 0.2791 119710.2 124570055 0.0293 91.4%36.8 BHV-5 on stream 98.5%BHV-5 Total Volume 4.75E06 Week Filter Start Stop Stop Start Total Total Loading Per Cent Number Date Date Gross Tare Net lime Time lime Liters mgftn3 On Stream SCFM 7825627 06-Apr-09 13-Apr-09 4.7530 4.5267 0.2263 21641.0 21476.1 9889.2 10221130 0.0221 98.1%363 7825621 13-Apr-09 20-Apr-09 5.5247 4.5206 1.0041 21795.2 21641.0 9255.6 9697308 0.1035 91.8%37.0 7825615 20-Apr-09 27-Apr-09 4.9668 4.5145 0.4523 21956.4 21795.2 9673.2 10134837 0.0446 96.0%37.0 7825609 27-Apr-09 04-May-09 4.7763 4.5195 0.2568 22125.2 21956.4 10124.4 10607570 0.0242 100.4%37.0 7825603 04-May-09 11-May-09 4.8622 44878 0.3744 22292.0 22125.2 10011.0 10488758 0.0357 99.3%37.0 8154096 11-May-09 18-May-09 5.1837 4.5039 0.6798 22460.1 22292.0 10083.6 10564823 0.0643 100.0%37.0 8154090 18-May-09 25-May-09 5.0869 4.5086 0.5783 22649.4 22480.1 11357.4 11867252 0.0487 112.7%36.9 8154084 25-May-09 01-Jun-09 4.7508 4.5136 0.2372 22796.9 22649.4 8850.6 9247918 0.0256 87.8%36.9 8154078 01-Jun-09 08-Jun-09 4.7909 4.5066 0.2843 22955.1 22796.9 9491.4 9917485 0.0287 94.2%36.9 10 8154072 08-Jun-09 15-Jun-09 4.7011 4.4809 0.2402 23123.5 22955.1 10104.0 10471751 0.0229 100.2%36.6 11 8154066 15-Jun-09 22-Jun-09 4.6824 4.4752 0.2072 23290.6 23123.5 10025.4 10333513 0.0201 99.5%36.4 12 8154060 22-Jun-09 29-Jun-09 4.6600 4.4916 0.1684 23459.2 23290.6 10120.2 10431226 0.0161 100.4%36.4 13 8154054 29-Jun-09 06-Jul-09 4.6755 4.4911 0.1844 23627.7 23459.2 10106.4 10417002 0.0177 100.3%36.4 Period March 31 2009 through June 30 2009 2nd Quarter 2009 BHV-1 on stream 100.0%BIIV-1 Week Filter Start Stop Stop Start Total Total Loading Per Cent Number Date Date Gross Tare Net lime Time Time Liters mq/m3 On Stream SCFM 10 11 12 13 Total Volume 4.82E05 7825630 7825624 7825618 7825612 7825606 8154099 8154093 8154087 8154081 8154075 8154069 8154063 8154057 6-Apr-09 13-Apr-09 20-Apr-09 27-Apr 09 04-May-09 11 May-09 18-May-09 25-May-09 01-Jun-09 08-Jun-09 15-Jun-09 22-Jun-09 29-Jun-09 13-Apr-09 20-Apr-09 27-Apr-09 4-May-09 11-May-09 18-May-09 25-May-09 1-Jun-09 8-Jun-09 tS-Jun-09 22-Jun-09 29-Jun-09 6-Jul-09 4.6924 5.3708 4.9544 4.7809 4.6720 4.7475 4.9345 4.7022 4.7559 4.6751 4.6833 4.6507 4.67 11 4.4729 4.5190 4.5530 4.5240 4.5174 4.5180 4.5380 4.5288 4.5164 4.4592 4.4784 4.4950 4.4908 0.2195 0.8518 04014 0.2569 0.1546 0.2295 0.3965 0.1734 0.2395 0.2159 0.2049 0.1557 1803 11394.5 11562.4 11730.0 11895.2 12065.5 12233.8 12422.8 12570.2 12734.2 12902.3 13069.0 13238.0 13406.5 11223.0 11394.5 11562.4 11730.0 11895.2 12065.5 12233.8 12422.8 12570.2 12734.2 129013 13069.0 13238.0 10286.4 10077.0 10053.0 9911.4 10220.4 10101.0 11337.0 8845.8 9838.8 10086.6 10002.6 10138.8 10112.4 10631662 10557.908 10532763 10384405 10708152 10583053 11845937 9242903 10280480 10453718 10310012 10450398 10423187 0.0206 0.0807 0.0381 0.0247 0.0144 0.0217 0.0335 0.0188 0.0233 0.0207 0.0199 0.0149 0.0173 102.0% 100.0% 99.7% 98.3% 101.4% 100.2% 112.5% 87.8% 97.6% 100 1% 99.2% 100.6% 100.3% 36.5 37.0 37.0 37.0 37.0 37.0 36.9 36.9 36.9 36.6 36.4 36.4 36.4 Totala 91 2184.0 4.7916 4508531 0.2831 131011.2 136404577 0.0268 100.0%36.8 BHV-2 on stream 100.0%BHV-2 Total Volume 4.82E06 Week Filter Start Stop Stop Start Total Total Loading Per Cent Number Date Dale Gross Tare Net lime Time lime Liters mg/mS On Stream SCFM 7825629 06-Apr-09 13-Apr-09 4.7346 4.4719 0.2627 21584.7 21413.8 10252.8 10596934 0.0248 101.7%36.5 7825623 13-Apr-09 20-Apr-09 5.1952 4.5043 0.6909 21753.2 21584.7 10110.0 10592483 0.0652 100.3%37.0 7825617 20-Apr-09 27-Apr-09 4.9327 4.5256 0.4071 21920.3 21753.2 10024.8 10503217 0.0388 99.5%37.0 7825611 27-Apr-09 04-May-09 4.8579 4.5277 0.3302 22065.1 21920.3 9891.6 10363660 0.0319 98.1%37.0 7825605 04-May-09 11-May-09 4.8666 4.4854 0.4032 22256.4 22085.1 10274.4 10764729 0.0375 101.9%37.0 8154098 11-May-09 18-May-09 5.0677 4.5164 0.5513 22424.3 22256.4 10075.2 10556022 0.0522 100.0%37.0 8154092 18-May-09 25-May-09 4.9918 4.5061 0.4857 22613.7 22424.3 11362.2 11872268 0.0409 112.7%36.9 8154086 25-May-09 01-Jun-09 4.7096 4.5112 0.1984 22761.3 22613.7 8857.2 9254814 0.0214 87.9%36.9 8154080 01-Jun-09 08-Jun-09 4.7640 4.4929 0.2711 22924.5 22761.3 9793.8 10233460 0.0265 97.2%36.9 10 8154074 06-Jun-09 15-Jun-09 4.7877 4.4952 0.2925 23092.7 22924.5 10090.2 10457449 0.0280 100.1%36.6 11 8154068 15-Jun-09 22-Jun-09 4.8279 4.4733 0.3546 23259.8 23092.7 10029.0 10337224 0.0343 99.5%364 12 8154062 22-Jun-09 29-Jun-09 4.7010 4.4649 0.2361 23428.8 23259.8 10138.8 10450398 0.0226 100.6%36.4 13 8154056 29-Jun-09 06-Jul-09 4.7974 44862 0.3112 235974 23428.8 10114.2 10425042 0.0299 100.3%36.4 Totals 91 2184.0 4.865854 4.497008 0.3688 131014.2 136407700 0.0349 100.0%36.8 BHV-4 on stream 91.4%BHV-4 Total Volume 4.40E06 Totals 91 2184.0 4.878023 4.501585 0.3764 7797d00 129092.4 134400575 0.0365 98.5%36.8 Period March 31 2009 through June 30 20092nd Quarter 2009 Page BHV-6 on stream 85.1%BHV-6 Total Volume 4.1OE06 ALL BHV on stream 95.0% Week Filter Start Stop Stop Start Total Total Loading Per Cent Number Date Date Gross Tare Net Time Time lime Liters mglm3 On Stream SCFM 10 11 12 13 7825626 7825620 7825614 7825608 7825602 8154095 8154089 8154083 8154077 8154071 8154065 8154059 8154053 06-Apr-09 13-Apr-09 20-Apr-09 27-Apr-09 04-May-09 11-May-09 18-May-09 25-May-09 01 -Jun-09 08-Jun-09 15-Jun-09 22-Jun-09 29-Jun-09 13-Apr-09 20-Apr-09 27-Apr-09 04-May-09 11-May-09 18-May-09 25-May-09 01-Jun-09 08-Jun-09 15-Jun-09 22-Jun-09 29-Jun-09 06-Jul-09 4.5647 4.5371 4.5229 4.6639 4.7742 4.8805 4.9160 4.7009 4.7216 4.6995 4.6676 4.6296 4.6059 45520 4.5081 4.4996 4.5169 4.5152 4.5146 4.5093 4.5041 4.4938 4.4903 4.4758 4.4831 4.4819 0.01 27 0.0290 0.0233 0.1470 0.2590 0.3659 04067 0.1968 0.2278 0.2092 0.1918 0.1465 0.1240 21288.9 21442.1 21603.8 21770.4 21877.7 22044.5 22233.0 22233.0 141.3 309.3 476.7 645.4 749.1 21124.3 21286.9 21442.1 21603.8 21770.4 21677.7 22044.5 22233.0 0.0 141.3 309.3 476.7 645.4 9880.8 9187.2 9702.6 10000.2 6433.2 10009.2 11309.4 0.0 8476.2 10078.8 10049.4 10120.8 6220.8 10212448 9625644 10165640 10477443 6740214 10486872 11817098 8856711 10445634 10358251 10431845 6411965 0.0012 0.0030 0.0023 0.0140 00364 .0349 0.0344 Dl VIOl 0.0257 0.0200 0.0185 0.0140 0.0193 98.0% 91.1% 96.3% 99.2% 63.8% 99.3% 112.2% 0.0% 84.1% 100.0% 99.7% 100.4% 61.7% 36.5 37.0 37.0 37.0 37.0 37.0 36.9 36.9 36.9 36.6 36.4 36.4 36.4 Totals 91 2184.0 4.683415 4.503438 0.1800 111468.6 116029785 DIV/01 85.1%36.8 Week Start Stop Blanks Date Date Net 10 11 12 13 7825625 7825619 7825613 7825607 7825601 8154094 8154088 8154082 8154076 8154070 8154064 8154058 8154052 06-Apr-09 13-Apr-09 20-Apr-09 27-Apr-09 04-May-09 11-May-09 18-May-09 25-May-09 01-Jun-09 08-Jun 09 15-Jun-09 22-Jun-09 29-Jun-09 13-Apr-09 20-Apr-09 27-Apr-09 04-May-09 11-May-09 18-May-09 25-May-09 01-Jun-09 08-Jun-09 15-Jun-09 22-Jun-09 29-Jun-09 06-Jul-09 4.5637 4.5223 4.5024 4.5165 4.5320 45269 4.5014 4.5026 4.4832 4.5020 4.4983 4.4748 4A634 Totals 91 2184.0 4.5070 Energy Laboratories Inc Wo rkorder Receipt Checklist Denison Mines USA Corp C09070362 Login completed by Corinne Wagner Date and Time Receied 7/912009 920 AM RSewed by Receh.ed by ckw Reviewed Date Carrier name Next Day Air Shipping container/cooler in good condition Yes No Not F%-esent fl custody seals intact on shipping container/cooler Yes No Not Atsent fl Custody seals intact on sample bottles Yes No fl Not ftesent Chain of custody present Yes No Chain of custody signed when relinquished and received Yes No Chainofcustodyagreeswithsanplelabels Yes No Samples in proper container/bottle Yes No Sample containers intact Yes No Sufficient sample volurie for indicated test Yes No All samples received within holding tine Yes No fl Container/Temp Blank temperature NIAC Water-VOA vials have zero heads pace Yes No ft VOA vials submitted Water pH acceptable upon receipt Yes No Not Applicable Contact and Corrective Action Coirnents None ENERG VLABORA TORIES INC 2393 Sail reekHbway82501 .RO Box 3258 aspe WY82502 ____________To//Free 888.235.0515 3072350515 Fax 307234.1539 casperenergy/ab.com www.energylab.comEfERGY LA/JOllA OR/ES CLIENT Denison Mines USA Corp Date 07-Aug-09 Project 2nd Quarter Air CASE NARRATIVE Sample Delivery Group C09070362 PB2IO ANALYSIS The MDC for Pb-210 per RG 4.14 is pCiIL The current technique can achieve an MDC of about pCi/L to pCi/L if we have sufficient sample to process 1.0 and this is reported on sample specific basis Please consult with your local regulatory agency prior to using these results for compliance purposes ORIGINAL SAMPLE SUBMITrALS All original sample submittals have been returned with the data package SAMPLE TEMPERATURE COMPLIANCE 4C 2C 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 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 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 days SOIL/SOLID SAMPLES All samples reported on an as received basis unless otherwise Indicated ATRAZINE SIMAZINE AND PCB ANALYSIS USING EPA 505 Data for Atrazine and Simazine are reported from EPA 525.2 not from EPA 505 Data reported by ELI using EPA method 505 reflects the results for seven individual Aroclors When the results for all seven are ND not detected the sample meets EPA compliance criteria for PCB monitoring SUBCONTRACTING ANALYSIS Subcontracting of sample analyses to an outside laboratory may be required If so ENERGY LABORATORIES will utilize its branch laboratories or qualified contract laboratories for this service Any such laboratories will be indicated within the Laboratory Analytical Report BRANCH LABORATORY LOCATIONS eli-b Energy Laboratories Inc Billings MT eli-g Energy Laboratories Inc Gillette WY eli-h Energy Laboratories Inc Helena MT eli-r Energy Laboratories Inc Rapid City SD eli-t Energy Laboratories Inc College Station TX CERTIFICATIONS USEPA WY00002 Radiochemical WY00937 FL-DOH NELAC E87641 Radiochemical E871017 California 02118CA Oregon WY20000I 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 CASPERWY 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 ELIs certification coverage by visiting www.energylab.com ELI appreciates the opportunity to provide you with this analytical service For additional information and services visit our web page www.energylab.com THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT Attachment BHV-1 S-BHV-2 BHV-4 -94 BH V-S BKGD 60 Above Background Gamma Exposure Rates-mremQuarter 50 40 30 20 10 00 Ti t-l in it 00 Ti v-I fl Lfl 00 00 00 00 00 Ti Ti Ti Ti Ti 01 Ti Ti --- to to toLZ25i55L2Z-v5 rrI v-I rIr v-ITI White Mesa Mill First Quarter 2009 Environmental Spherical Gamma Monitor Results Mean Total Days Ambient Badge Date Date Badge at Dose mRem mRem mRem Number Location Issued Returned WMM Equivalent hour Day Week Control inistration 1/8/2009 4/7/2009 89 36.9 0.02 0.4 15 2.90 Control 1/8/2009 4/7/2009 89 54.7 0.03 0.6 15 4.30 B1V-6 1/8/2009 4/7/2009 89 34.3 0.02 0.385 2.70 Molycoi 1/8/2009 4/7/2009 89 712.8 0.33 8.009 56.06 tdium Precip 1/8/2009 4/7/2009 89 88.5 0.04 0.994 6.96 cake Drying 1/8/2009 4/7/2009 89 156.3 0.07 1.756 12.29 Leach 1/8/2009 4/7/2009 89 264.6 0.12 2.973 20.81 N4i11 Control 1/8/2009 4/7/2009 89 402.9 0.19 4.527 31.69 Pre 1/8/2009 4/7/2009 89 105.5 0.05 1.185 8.30 ral Control 1/8/2009 4/7/2009 89 78.5 0.04 0.882 6.17 10 el Screeno 1/8/2009 4/7/2009 89 233.1 0.11 2.619 18.33 11 Dumping 1/8/2009 4/7/2009 89 450.1 0.21 5.057 35.40 12 Met Lab 1/8/2009 4/7/2009 89 66 0.03 0.742 5.19 13 ter Press Ro 1/8/2009 4/7/2009 89 193.2 0.09 2.171 15.20 14 BFIV-1 1/8/2009 4/7/2009 89 42.5 0.02 0.478 3.34 15 BHV-2 1/8/2009 4/7/2009 89 35.4 0.02 0.398 2.78 16 BHV-3 1/8/2009 4/7/2009 89 33.4 0.02 0.375 2.63 17 BFIV-4 1/8/2009 4/7/2009 89 30.6 0.01 0.344 2.41 18 BHV-5 1/8/2009 4/7/2009 89 35.1 0.02 0.394 2.76 19 SAG Mill 1/8/2009 4/7/2009 89 267.6 0.13 3.007 21.05 20 Tails 1/8/2009 4/7/2009 89 146.5 0.07 1.646 11.52 21 CCD 1/8/2009 4/7/2009 89 88 0.04 0.989 6.92 22 North SX 1/8/2009 4/7/2009 89 59.8 0.03 0.672 4.70 23 nistration Bu 1/8/2009 4/7/2009 89 41.2 0.02 0.463 3.24 24 mm Parking 1/8/2009 4/7/2009 89 97.1 0.05 1.091 7.64 25 wcake Pack 1/8/2009 4/7/2009 89 308.7 0.14 3.469 24.28 26 lowcake Stoi 1/8/2009 4/7/2009 89 244.4 0.11 2.746 19.22 27 ucking Root 1/8/2009 4/7/2009 89 164.7 0.08 1.85 12.95 28 ill Lunch Ro 1/8/2009 4/7/2009 89 63.2 0.03 0.7 10 4.97 29 South SX 1/8/2009 4/7/2009 89 222.1 0.10 2.496 17.47 30 Super.s 1/8/2009 4/7/2009 89 52.6 0.02 0.59 4.14 31 eFeedGriz2 1/8/2009 4/7/2009 89 390.3 0.18 4.385 30.70 32 Scalehouse 1/8/2009 4/7/2009 89 196.4 0.09 2.207 15.45 33 ple Plant 1/8/2009 4/7/2009 89 329.7 0.15 3.704 25.93 34 Front Gate 1/8/2009 4/7/2009 89 166.7 0.08 1.873 13.11 35 na Travel Way 38.2 DIV/0 DIV/0 DIV/0 36 na Travel Way 30.3 DIV/0 DIV/0 DIV/0 37 na Travel Way 33.3 DIV/0 DJV/0 DIV/0 38 na Travel Way 31.2 DIV/0 DIV/0 DIV/0 39 na Travel Way 39.3 DIV/0 DIV/0 DIV/0 40 ana Travel Way 32.7 DIV/0 DIV/0 DIV/0 41 na Travel Way 33.7 DIV/0 DIV/0 DIV/0 42 Dna Travel Way 34 DIV/0 DJV/0 DIV/0 43 Dna Travel Way 33.7 DIV/0 DIV/0 DIV/0 44 na Travel Way 29 DIV/0 DJV/0 DJV/0 Control Front Gate 10/2/2008 1/8/2009 98 36.9 0.02 0.377 2.64 14 BHV-l 10/2/2008 1/8/2009 98 42.5 0.02 0.434 3.04 15 BHV-2 10/2/2008 1/8/2009 98 35.4 0.02 0.361 2.53 16 BHV-3 10/2/2008 1/8/2009 98 33.4 0.01 0.341 2.39 17 BHV-4 10/2/2008 1/8/2009 98 30.6 0.01 0.312 2.19 18 BF 10/2/2008 1/8/2009 98 35.1 0.01 0.358 2.51 19 SAG Mill 10/2/2008 1/8/2009 98 267.6 0.11 2.73 19.11 Leach 10/2/2008 1/8/2009 98 264.6 0.11 2.700 18.90 21 CCD 10/2/2008 1/8/2009 98 88 0.04 0.898 6.29 22 North SX 10/2/2008 1/8/2009 98 59.8 0.03 0.6 10 4.27 29 South SX 10/2/2008 1/8/2009 98 222.1 0.09 2.266 15.86 Pre 10/2/2008 1/8/2009 98 105.5 0.04 1.077 7.54 25 wcake Pack 10/2/2008 1/8/2009 98 308.7 0.13 3.150 22.05 26 lowcake Stoi 10/2/2008 1/8/2009 98 244.4 0.10 2.494 17.46 27 luckingRoor 10/2/2008 1/8/2009 98 164.7 0.07 1.681 11.76 28 ill Lunch Ro 10/2/2008 1/8/2009 98 63.2 0.03 0.645 4.51 31 reFeed Griz 10/2/2008 1/8/2009 98 390.3 0.17 3.983 27.88 33 p1ePlantO 10/2/2008 1/8/2009 98 329.7 0.14 3.364 23.55 23 nistration Bu 10/2/2008 1/8/2009 98 41.2 0.02 0.420 2.94 24 minPowerP 10/2/2008 1/8/2009 98 97.1 0.04 0.991 6.94 Control 10/2/2008 1/8/2009 98 54.7 0.02 0.558 3.91 BHV-6 10/2/2008 1/8/2009 98 34.3 0.01 0.350 2.45 idiumPrecip 10/2/2008 1/8/2009 98 88.5 0.04 0.903 6.32 32 Scalehouse 10/2/2008 1/8/2009 98 196.4 0.08 2.004 14.03 20 Tails 10/2/2008 1/8/2009 98 146.5 0.06 1.495 10.46 13 ter Press Ro 10/2/2008 1/8/2009 98 193.2 0.08 1.971 13.80 12 Met Lab 10/2/2008 1/8/2009 98 66 0.03 0.673 4.71 White Mesa Mill Second Quarter 2009 Environmental Spherical GammaMonitor Results Mean Total Days Ambient Badge Date Date Badge at Dose mRem mRem mRem Number Location Issued Returned WMM Equivalent hour Day Week Control iinistration 4/7/2009 7/2/2009 86 34.1 0.02 0.397 2.78 Control 4/7/2009 7/2/2009 86 47.3 0.02 0.550 3.85 BHV-6 4/7/2009 7/2/2009 86 30.2 0.01 0.351 2.46 Molycoi 4/7/2009 7/2/2009 86 634.1 0.31 7.373 51.61 idium Precip 4/7/2009 7/2/2009 86 74.1 0.04 0.862 6.03 cake Drying 4/7/2009 7/2/2009 86 236 0.11 2.744 19.21 Leach 4/7/2009 7/2/2009 86 240.3 0.12 2.794 19.56 Mill Control 4/7/2009 7/2/2009 86 0.00 0.000 0.00 Pre 4/7/2009 7/2/2009 86 141.7 0.07 1.648 11.53 ral Control 4/7/2009 7/2/2009 86 64.8 0.03 0.753 5.27 10 el Screen 4/7/2009 7/2/2009 86 230.6 0.11 2.68 18.77 11 Dumping 4/7/2009 7/2/2009 86 390.5 0.19 4.541 31.78 12 Met Lab 4/7/2009 7/2/2009 86 53.2 0.03 0.619 4.33 13 ter Press Ro 4/7/2009 7/2/2009 86 139.4 0.07 1.621 11.35 14 BHV-1 4/7/2009 7/2/2009 86 33.7 0.02 0.392 2.74 15 BHV-2 4/7/2009 7/2/2009 86 33.3 0.02 0.387 2.71 16 BHV-3 4/7/2009 7/2/2009 86 28.8 0.01 0.335 2.34 17 BHV-4 4/7/2009 7/2/2009 86 28.9 0.01 0.336 2.35 18 BHV-5 4/7/2009 7/2/2009 86 31.7 0.02 0.369 2.58 19 SAG Mill 4/7/2009 7/2/2009 86 226.1 0.11 2.629 18.40 20 Tails 4/7/2009 7/2/2009 86 121 0.06 1.407 9.85 21 CCD 4/7/2009 7/2/2009 86 72.1 0.03 0.838 5.87 22 North SX 4/7/2009 7/2/2009 86 81.6 0.04 0.949 6.64 23 nistration Bu 4/7/2009 7/2/2009 86 36.8 0.02 0.428 3.00 24 mm Parking 4/7/2009 7/2/2009 86 86.1 0.04 1.001 7.01 25 wcake Pack 4/7/2009 7/2/2009 86 334.5 0.16 3.890 27.23 26 lowcake Stoi 4/7/2009 7/2/2009 86 144.9 0.07 1.685 11.79 27 lucking Root 4/7/2009 7/2/2009 86 130 0.06 1.5 12 10.58 28 ill Lunch Ro 4/7/2009 7/2/2009 86 55.1 0.03 0.641 4.48 29 South SX 4/7/2009 7/2/2009 86 178.9 0.09 2.080 14.56 30 Super.s 4/7/2009 7/2/2009 86 46.2 0.02 0.537 3.76 31 Feed Griz2 4/7/2009 7/2/2009 86 329.6 0.16 3.833 26.83 32 Scalehouse 4/7/2009 7/2/2009 86 169.2 0.08 1.967 13.77 33 ple Plant 4/7/2009 7/2/2009 86 344.2 0.17 4.002 28.02 34 Front Gate 4/7/2009 7/2/2009 86 173.5 0.08 2.017 14.12 35 na Travel Way 38.2 DIV/0 DW/0 DIV/0 36 na Travel Way 30.3 DIV/0 DIV/0 DIV/0 37 na Travel Way 33.3 DIV/0 DIV/0 DIV/0 38 na Travel Way 31.2 DIV/0 DIV/0 DIV/0 39 na Travel Way 39.3 DIV/0 DIV/0 DIV/0 40 na Travel Way 32.7 DIV/0 DIV/0 DIV/0 41 na Travel Way 33.7 DJV/0 DIV/0 DIV/0 42 na Travel Way 34 DIV/0 DIV/0 DIV/0 43 Dna Travel Way 33.7 DIV/0 DIV/0 DIV/0 44 na Travel Way 29 DIV/0 DIV/0 DIV/0 Control Front Gate 4/7/2009 7/2/2009 86 34.1 0.02 0.397 2.78 14 BFIV-1 4/7/2009 7/2/2009 86 33.7 0.02 0.392 2.74 15 BHV-2 4/7/2009 7/2/2009 86 33.3 0.02 0.387 2.71 16 BHV-3 4/7/2009 7/2/2009 86 28.8 0.01 0.335 2.34 17 BFIV-4 4/7/2009 7/2/2009 86 28.9 0.01 0.336 2.35 18 BHV-5 4/7/2009 7/2/2009 86 31.7 0.02 0.369 2.58 19 SAG Mill 4/7/2009 7/2/2009 86 226.1 0.11 2.629 18.40 Leach 4/7/2009 7/2/2009 86 240.3 0.12 2.794 19.56 21 CCD 4/7/2009 7/2/2009 86 72.1 0.03 0.838 5.87 22 North SX 4/7/2009 7/2/2009 86 81.6 0.04 0.949 6.64 29 South SX 4/7/2009 7/2/2009 86 178.9 0.09 2.080 14.56 4/7/2009 7/2/2009 86 141.7 0.07 1.648 11.53 25 wcake Pack 4/7/2009 7/2/2009 86 334.5 0.16 3.890 27.23 26 lowcake Stoi 4/7/2009 7/2/2009 86 144.9 0.07 1.685 11.79 27 lucking Roor 4/7/2009 7/2/2009 86 130 0.06 1.5 12 10.58 28 ill Lunch Ro 4/7/2009 7/2/2009 86 55.1 0.03 0.641 4.48 31 Feed Grin 4/7/2009 7/2/2009 86 329.6 0.16 3.833 26.83 33 ple Plant 4/7/2009 7/2/2009 86 344.2 0.17 4.002 28.02 23 nistration Bu 4/7/2009 7/2/2009 86 36.8 0.02 0.428 3.00 24 minPowerP 4/7/2009 7/2/2009 86 86.1 0.04 1.001 7.01 Control 4/7/2009 7/2/2009 86 47.3 0.02 0.550 3.85 BHV-6 4/7/2009 7/2/2009 86 30.2 0.01 0.35 2.46 Ldium Precip 4/7/2009 7/2/2009 86 74.1 0.04 0.862 6.03 32 Scalehouse 4/7/2009 7/2/2009 86 169.2 0.08 1.967 13.77 20 Tails 4/7/2009 7/2/2009 86 121 0.06 1.407 9.85 13 ter Press Ro 4/7/2009 7/2/2009 86 139.4 0.07 1.621 11.35 12 Met Lab 4/7/2009 7/2/2009 86 53.2 0.03 0.6 19 4.33 Attachment IF Ra - 2 2 6 Co n c e n t r a t i o n s In Ve g e t a t i o n uC i / K g MO E - 0 2 .O O E - 0 3 .O O E - 0 4 c1 .O O E - 0 5 .O O E - 0 6 .O Q E - 0 7 .O O E - 0 8 It Y t V $ t -- - N E uN W i- S W Pb - 2 1 0 Co n c e n t r a t i o n s In Ve g e t a t i o n uC i / K g .O O E - 0 2 .O O E - 0 3 .O O E - 0 4 Cu .O O E - 0 5 -J .O O E - 0 6 .O O E - 0 7 MO E - 0 8 .- N E uN W a- S W NORTH EAST OF MILL SAMFLSO OATS Ro-226 Ra-226 LLO VALUE ERROR oCr/Kg UCI/Kg oCt/K0 5.OE-08 P0-210 P0-210 LLO VALUE ERROR oCt/Kg oCt/Kg rCr/Kg SE-SO 27 Aug 81 90E-O4 tOE-OS 5.OE-O8 l.IOE LOS 04 tOE 06 20-Ovr-61 1.465 04 I.OE 05 5.0E-08 6.00E-0 SE-OS 05-06 15-Apr-82 1.215 04 l.3E 05 1.05-06 4.905 7.OE 05 8.0E05 01 Jul 82 l.60E-04 l.OE-OS OE-OO 065-04 l.7E 04 1.0007 30-Nov-OS 2.67E 06 1.15 06 1.05 06 LOSE 04 9.05 06 1.05-OS 13 AFr-83 9J6E-05 6.2E-06 SE-SO 4.97E-04 9.3S 05 1.05-04 01 Jul 83 1.12E 84 1.25-05 6.0E-06 845-04 25-05 SE- 30-Jan-84 1.09504 SOS 06 4.OEO6 7.005 04 6.2E 05 6.OES 26 Jru-04 347E-04 1.25-05 2-OE-09 3755-03 1.6E-04 4.OE-06 14-Nov 84 5.61E 04 2.0E04 2.0E07 7.02E 03 3.3E 04 7.0E00 27-Mar-65 1.055 03 3.OE 05 2.00-06 3.225 03 1.40 04 2.00-05 15-Jul-65 205-OS 7.0E-06 3.OE-06 770E-04 1.3E-04 20E-04 09 Oot 02 1.ISEO4 LOS 05 3.0E06 SlOE 04 3.0E05 2.OEOS 24-Mrr-86 5.72E-04 2.1E-05 4.0E-06 2.49E-03 1.OE-04 LOS-OS 10Jul86 SOlE 04 1.JE-0S 3.5E06 1.57E03 I.7EOJ 2.0E 16-Ooc-86 8.7OE-04 SOS 05 3.05-06 6.005-04 SOS-OS 3.00-06 29 Apr 87 5.9OE-04 7.05 85 SOS-OR 1.50E53 1.0E04 LOS 05-Jru-87 1.600-04 3.05-05 SOS-OS 9.SOE-04 SE-OS 05-06 22-Orv-87 2.10E04 4.0E 05 5.0E00 1.70E 03 lOS 04 lOS 06 19-Apr-88 4.005-04 7.00-05 S.OE-06 400-03 l.OE-04 OE-66 20 Jul 88 3.20E-05 2.25-05 SOS 00 l.SOE 04 4.4EO4 1.0E06 07-Apr-89 5.60S-04 4050S uro lbS-OS lOS-SI our 06 Jrm 89 lOSE 04 JOE 05 our 2.30E 04 2.0S05 our 07-Nov-89 6.005-04 0.05-05 7.05-06 2.04S-03 7.00-00 45-05 17-Apr-90 2.605-04 30E-05 4.0E-O6 3.30E 04 2.0S05 2.2S05 20-Jur-90 l.00E-04 2.05 05 5.OS-00 3.200-04 2.0E-05 05-06 17-OvI-9O 1.60E-04 2.05-05 505-00 3.SOE-04 2.0505 lOS 06 10 Apv 91 1.2OE 04 2.OEOS SOS 06 3.00E04 2.05-OS LOS-SO l-Jro-01 0.105-05 1.65-OS 2.05-07 L9SE-04 2.OE-05 20E-07 20-Nov91 4.SOS-04 4.OE-05 SOS 08 1.09E 03 SOS 05 lOS 06 22-Apr92 2.6OSOS lOS OS 2.0SO6 1.500-04 2.OE-O5 1.05-05 10-Jun-92 1.005-OS 7.OE-06 2.OE-07 7.SOE-O5 2.0505 LOS 06 IS 3m 92 7.OOE 05 SOS 05 JOE 06 7.10S04 7.OS-0S SE-OS 13-Apr-93 3.70E-0S 2.2S-0S JOE-SO 2.OOS-04 SOS 05 LOS 05 26Jun93 3.06E85 1.SS 05 3.OE-06 4.30S-0S 3.SE-05 2.05-05 12-Oct-92 660S-OS 275-OS JOE-SO 530E-04 6.65-OS 2.OEOS 11 Moy 94 1.60E-04 4.OE 05 JOE 05 4.40S04 6.OSOS 2.OS-04 16-Jul-94 1.71S00 1.25-06 9.05-08 3.005-05 6.15-06 45006 26 Nov94 2.40S 04 1.SS 05 1.7E 07 1.70S 04 1.15-OS 82E-57 1-Apr-90 6.70S-0S S.4S-06 1.6E-07 40S-04 SE-OS 7.9E07 06-Jul-95 SOS-OS I.SE-06 1.SE-07 SlOE 05 4SF 06 7.6S-07 15 Nov92 S.SOEOS SOS 06 lOS 07 6.70S-0S .05-OS 6.OE-07 23-Apr-66 5.205-02 SE-SO SF07 J.2OEOS 4.5E06 IRS 07 3IJrl96 14 Nov 96 3.OOS 55 2.00-06 1.OS-07 1.40E-04 7.15-06 9.3E 07 21-Apr-97 1.105-OS 4.7E-07 2E-07 lOS 05 3.6S 06 6.1S07 05 Orp 97 1.IOEOS 4.JSO7 1.3S07 2.100-OS 7.30-07 6.7S-07 20-Nov-07 0.OOS-06 I.2E-06 S.6S-07 1.40E 54 4.6E06 1.1007 23-Mur 90 v9 lOS-OS IS 03 9.1505 4.505 04 4.55-04 5E-64 16 Jun-90 lOSE OS 1.25-06 SE-OS 4.005-05 1.OE-06 3.2S07 05-Nov90 5.705 05 lOS 06 8.2S00 0.7SF 05 5.OS-06 4.10-07 15 Apr-99 2.06S-O4 3.OE-O6 1.2E-07 3.00S 04 lOS 55 6.OS 05 07 Jul 99 603S05 I.4S06 0.35-00 1.40E-04 4.7E-06 42S-07 02 Oar 99 2.JOS-09 1.05-06 2.3E-07 2.105-05 1.OE-06 lIE 06 21-Apr-SO 1.SOS-04 3.0S06 1.2S07 1.60004 0.05-06 S.9E-07 22Jun06 1.200-06 1.05-07 20S-07 1.605-04 lOS 05 1.4S06 21-Oar-SO I.60E-06 I.IS-06 J.7S 07 5.100 05 5.00-06 OS-06 20Apr01 1.06S 06 1.05-07 2.4S-07 2E-00 I.OE-07 2.4E 07 14-Jun-01 2.30E-06 2.00-07 9.9E06 3.005 06 2.OS 07 S.OE-07 17 Orr 01 9.10S06 2.4S-06 12S-07 3.575-OS 3.05-06 6SF 07 07-May-02 3.205-00 1.85-06 7.65 07 4.SOS 05 2.6S06 1.0005 07-Jul-02 SSSS-OS 2SF 06 7.6S 07 5.2 IS-OS 2.9E-06 100-OS 13 Oar 02 7.75S OS 3.65-06 7.6S-07 I.29E-04 62S06 lOS 55 21-Mom-OS 9.105-00 I.JS 06 3.6S07 1.135 05 1.60-06 2.4E-06 10 Jun 03 2.SOS 03 I.3S-06 3.6E-07 3.265-06 2.0S06 7.4500 20-Nov-03 0.705-05 255-06 I.SS-07 4.OSSOS SOS 06 8.35-07 06 Apr04 9SOSOS 2.75-06 I.IE-07 500S-OS 305-06 SOS 07 12-Jun-64 5.635-OS 2.45 06 1.05 07 6.42S-05 5.90-06 900-07 30 Nov04 O.41S05 S.OOE-06 2.005-00 2.40E 04 1.405 05 3.OOS-07 21-Apr-OS S6OS-OS 3.00S06 1.4SF 07 S.OOS-0S 4.000-06 6.605-07 13 Jun 53 9.1SF 06 1.00S-06 1.OOE-07 1105-05 1.20S05 9.00S07 10-Nov-OS 6.065-05 3.00E06 lbS 10 I.70S-06 6.400-07 5505-IS 02 Apr09 0.OOSOS 5005-06 SOS-SO 3.405 04 1.205 OS 1.000 06 16 Jun 06 4.IOSOS 3.105-SO 5.055-00 116E-04 6.105-56 1.OOS 06 20-Nov-06 1.17504 4.600-06 1.905-07 320S-04 95SF-SO 9.SSS 07 30-Mar-07 9.705-OS 440SO6 1.90S07 3.40S04 0.70S06 0.4-07 1-Jun-07 1.30E-OS 60S06 1.90S07 1.20S-04 6.60006 9.70E-07 23-Nov-07 7000-05 6.200-06 2.OOE-07 5.OOS 04 2.OOSOS 1.205-06 22-Apr-SO 2.OE-O6 JOSE 06 5.205 07 2.35-04 1.405-05 lOSS 06 10 Jun-08 J.2S OS 3.20E-06 OOE-O0 6.9E 05 3.SSS 05 2.OOS-0S 20-Apr-09 S.9S-04 1.355-02 1.500-06 J.4S 04 1.305-05 1.5SF-SO 17-Jan-09 fl1.95 05 111.45506 4.60S-07I 3.6E-OS IIOE-OSII 1.OOS-05 NORTH WEST OP MILL ________ ________ SAMPLED Ru 226 VALUE Ru-226 ERROR LLD uCi/Kp 96-210 VALUE P6-210 ERROR LLIJ uCr/Rg DATE uCr/Kg uCi/Kg S.OE 06 ucr/Rg uCi/Rg IRE 06 27-Aug 61 2.73E-03 5.00-05 5.00-60 7.108 03 3.OE 04 l.OE-06 20-Ocr-RI 2.OOE-04 1.00-05 5.00-00 8.300-04 SUE-OS 88-06 15 Apr 02 I.04E 04 9.SE 06 7.0E 06 6.4CR 04 SUE OS 4.OE OS 01 Jul 02 2.00E-05 l.UE 05 5.08-09 2.200 04 9.00-05 l.OE-07 S0-Nur-82 360-06 9.50 07 I.OE-06 8.000-05 RE-OS I.OE ES 13 Apr 83 8.588 05 1.48-ES 2.OE-08 3.53E 04 l.9E 05 SE-OS 01-Jul03 1190-04 IE-E5 508-06 580-04 130-05 1.OE 05 30-Juu-84 9.78E-05 7.0006 2.0006 2.18E 03 3.4E 04 OE-04 28-Juu 84 2.00004 1.00-OS 3.08-59 1.600-03 7.80-05 200-00 14-Nuu-64 6.050-04 1.60 04 2.08 07 2.500 85 1.1004 3.00-08 27 Mur 85 1.10004 8.00-00 3.00-06 0630-04 4.20-05 3.00 05 15 Jul 95 158-55 600-00 2.00-06 5.480 04 5.08 05 5.0005 09-001-85 1.07004 6.0000 2.00 06 3.800-04 3.00-05 2.00-05 24-Mur-86 8.660-04 l.OE-85 2.00-06 4.40E 03 l.9E 04 3.08-05 10-Jul-06 6.660-04 1.00 05 3.00 06 4.780-03 2.10-04 6.00-05 18-Ouc-96 5.200 04 1.00-04 3.00-06 1.700-03 1.60 04 6.OE ES 20-Apr-87 100-04 1.0004 5.00 08 1.600 03 1.00-04 00-06 05-Juu-87 1.60E 94 3.OE-05 5.00-08 5.500-04 4.6E-05 1.00 06 22 Due 87 3600-04 5.00 88 1.80003 1.0004 l.OE-06 19-Apr-88 2.60004 5.0005 5.00-88 1.900-03 1.00-04 1.0006 28 Jul 88 108-OS 1.98-05 5.0008 1.60004 4.08-05 00-06 07-Apr-89 6.20004_1 5.00-05 uuu 1.708-03 l.OE 04 uru 06 Juu 89 II 3.408-04 3.08-05 uru 7.40E 04 3.OE 05 uuu 07-Nuv-89 ICE 04 6.0005 7.80-86 1.060-03 7.00-05 1.4005 17 Apr 90 J.60E-04 3.00-05 4.00 06 4.800 04 2.00-05 220-05 20-Juu-90 l.78E 04 2.OE 05 5.00-08 3280-04 2.60-05 1.00 96 17-Oct-90 8.90005 1.68-05 500-08 2.90E-64 2.0005 1.00-06 18 Apr 91 3.000-04 3.08-05 5.88 06 4.100 04 2.00-05 1.60-06 l1-Juu-91 3.10004 3.0005 2.00-07 4.700-04 2.OE 05 2.0007 20-Nuv-91 5.06004 4.00-05 500-08 500 03 1.00 04 1.08-06 22 Apr92 2.060-05 800-04 208 06 9.600 05 1.40-05 1.0005 l8-Juu-92 6.SOE-06 6.0088 2.00-06 l.20E-04 2.8005 1.00 86 IS Juu 92 1.208-04 4.08-05 3.80_06_1 1.210-83 8.00-05 280 05 13-Apr-92 1.80005 1.78 05 3.00-06 00-84 JOE 95 2.00-05 26-Juu-93 5.20005 1.98-OS 3.00 06 1.700 05 3.60 05 2.0E-05 12 Ocr 93 bE-OS 2.3E 05 300-06 100-04 6.00 05 2.00-05 11-May-94 l.20E 04 1.08-05 3.0005 9.800-04 60-04 2.0084 19-Jul-94 738-05 1.60 06 8.40-08 7.80E-05 7.IE 06 4.20-87 28-Nuv-94 2.400-04 1.58-US 1.70-07 2.60004 1.30-85 8.JE 07 II Apr95 8.400-05 6.IE 96 1.5007 1.1005 7.5E 05 06-Jul-95 1.90805 1.50-06 148-07 4.508 05 4.38-06 7.2087 15-Nec 95 1.200-04 6.80-06 1.40 07 lOSE-OS 580-00 7.10 07 23 Apr96 8.300-05 3.38 06 1.90-07 6800 65 6.3E 06 180-07 31-Jul-96 14 Nec 96 3.600-05 2.5E-06 1.60 07 560-05 5.68-06 840-07 21 Apr-97 308-05 2.38 06 1.78-07 4.40E 05 4.9006 840-07 O5-Oup-97 5.48E 06 3.50-07 1.80 07 3.208 05 9.0E-07 7.8007 29 Nec 97 8.900-06 7.2E 97 __5.40-07 3408-04 8.70 06 110-07 23-Mur-90 9.20805 9.28-05 9.2005 4.608-04 4.68-04 4.68 94 16 Juu 98 6.500-08 60608 6.58 08 3208-07 33807 338-07 05-Nuv-98 4.26E-85 1.90-06 110-07 1.708 94 1.00-85 5.SE 07 15 Apr 99 6.208-05 1.08-07 1.408 04 7.08 06 08-07 07-Jul-99 5.458 05 1.48-06 83008 9.200-05 400-06 4.28 97 02-Due 99 1.100-84 3.08-06 238 07 2.80E-05 l.OE 06 1.18-06 21-Apr-06 3.78E-85 1.0896 2.48-07 2.708 94 l.OE-05 1.20 06 22-Juu 00 2.908-05 1.8896 3.3807 2.808-04 2.0895 78-06 21 Ore-OS 308-06 1.4806 278-87 5.308 04 5.08-05 1.9806 30-Apr-01 2.10805 1.08-06 1.58-07 7.68-07 N/A 7.68 07 l4-Juu-0l 130896 4.08-08 1.28 07 1.808-06 3.08 08 598-07 Juu-O0 2768-85 7.678-07 8308-08 6.728 05 2.628-06 6.008 07 7-Muy-02 4.908 05 2.488-06 7.608 07 1388-04 5.618 06 1.808-OS Jul 02 0.888-05 4.32806 7.608-07 8.33805 4.328-06 1.008 05 lS-Drc-02 1.50804 628-00 7.698 07 3.160-04 1.87805 08-05 21 Mue-03 5008-05 3.48-06 271806 e4.2r-6 4.208-06 10 Juu 03 5.608 55 2.80-06 4.100-07 1.88804 5.14806 8.28 08 20 Hue 03 3.208-04 8.2806 708-87 4.898-04 1.258-05 8.58 07 8-Apr 04 6.29805 1896 2.008-07 1.948 05 4.00806 1.0806 12 Juu 04 6.518-OS 3.48-06 1.308-07 1.878-OS 390886 6.58-07 30-Nuc-84 7.50F 4.68-06 2.9808 4458 04 1.408-85 3.08-87 21 Apr05 4.908-05 2.78806 1308-07 1.270-04 4808-06 6308-07 l3-Juu-05 2.30805 2.108-06 1.508 07 4.70805 5.108-06 7.698 07 18 Hue-OS 7.408-05 3.508-06 1.208-18 2.488-06 8.108-08 5908-18 5-Apr-06 068-84 6.008-06 5.08808 6548 04 1.508 05 1.008-86 16-Juu-06 9.508-OS 5.90896 5.008-08 4.48804 1.408-05 1.008-06 28 Nuv-06 8.138-05 4.180-06 2.28807 3.258-04 1.128 06 1.008 05 30 Mur 07 4.308 05 2.69806 1.700-07 2.648 04 8.60887 Juu 07 5.108-05 3.20806 2.308-07 5.308-04 1.408 06 1.208-06 20-NOc-07 7.308 05 668-96 5.0008 7.008 04 2.208-05 22 Apr06 2.80-88 2.8806 7208-07 4.408-04 2.08-05 08-86 18-Juu-08 3.2806 3.38-06 1.80806 1498 04 3.58-05 5.58 05 12-Ore 00 7.38-05 3.28 06 7408-07 4.408-04 3.28-05 28-Apr-09 5.38 05 3.60-06 1.108 06 1.908 0411 1.58 05 2.28 05 17 Juu 09 2.38-05 if1.68 05 5.28-07 4.308-OSif 008-05 170-05 SOUTH WEST OF MILL Ro-226 Er 226 LLO IIP0-210 Pb-SIR LLO SAMPLEO VALUE ERROR nO/Kg VALUE ERROR oCr/Kg OATh nCr/Kg oCr/Kg 5.00-00 nCr/Kg nCr/Kg 1.OE 06 27-Aug-01 9.SOE-E41l 2.0E-O5 iiORE 08 IIlOSE 0411 IRE 05 lEE 06 21-Oct-01 3.000 osIl 3.00-06 0E-08 Ii1.500-0411 200-05 Ii1.0000 15 Apr-02 I.37E-05lI 3.00 06 3.00-06 800-0411 400-05 4.00-05 01-Jul 02 3.400 0411 2.00-05 II5.0000 Ii3.600 03 II2.700411 1.00 97 30 Nov-02 1.700-ROll 3.OE 06 ii2.EE-06 7.920-04 4.00-06 RE-OS 14-Apr 83 7.13E-04i1 7.3E-05 9.00 08 2.SIE 03 3.SE 0411 3.00 04 01-Jul 03 5.39E coil 4.5E-06 Ii2.00-0611 6.88004 Ii4.SE-05 4.OE-S3 30-Jun-84 6.400 os 7.0E-06 400-06 120-0 l.OE-04 4.OE 05 20 Jun-84 0.270 osIl 8.30-0611 3.000911 1.0000311 1.0E04h1 9.00 col 14-Nov 0411 2.720 0411 1.50 8411 2.00-07 4700-03 7.20-04 3.00-07 27 Moo-OS 4730-041 1.60 07 3.0006 7.070 0011 3.6005 3.00 05 15-Jul osil 6.600 osil 7.00-06 4.0E06II 4.90E-04 3.00-05 300-05 09 Oct-85 II2.830-041 2.00-001 7.00 06 1.50003 Ii1.00 0411 7.00-05 24-Mar 08 1.570 o-iil 1.00-05 4.00-06 140-03 II180-0411 3.00-ES 10-Jul-88 3.70E-04 1.00 05 II2.00-06 1.650 02 II7.00 04 1.0004 10 Orc 06 2.600-041 200-85 II2.OE-08 1.700-03 II1.00-0411 00-04 20-Apr-87 Ii4.IEE-04 7.00 05 0.0008 2.200 03 1.000411 1.0006 05 Jun-87 II2.900-0411 400-05 s.oo.ooj 7.500-04 5.00-85 Ii00-06 22-Ooc-07 1.800041 3.0005 5.00-08 II2.400-03 1.000411 1.00 00 19 Apr-80 2.300-041 s.oo-os 5.00-00 2.900-03 1.00-04 1.00-06 28-Jul-80 1.500 04 3.0005 II500 00 II4.38003 2.00 0411 1.0006 07-Apr-89 s.loE-8411 4.0005 IInor 4.200 03 1.00-0411 06 Jun 89 1.300-041 200-85 IIran II500-03 1.80-0411 07-Nov-89 4.300 04 5.00 05 1.4005 3.500 03 1.400411 2.7005 28 Mrr 90 2.500-041 3.00-05 II5.OE-06 2390-03 5.00-85 250-os 13-Jun-90j 1.100041 2.00 05 II5.00-08 6.800 04 23-Oct-98 IIioo-oslI 1.40-05 5.0008 8.100-04 3.0080 Ii1.00 08 JOE-OS II00-06 10-Apr-91 II3.400-05 1.1005 5.00 06 2.2000411 1.00.0511 1.00-06 11-Jun-91 IIo.oRE-R5 OE-06 II2.00-07 II200-0411 1.00-0511 2.80-07 28-Nov91 6.500 coil 1.40-as II5.00-00 II9.100-8411 5.00 05 1.00 06 22-Apr-92 800-0511 7.00 08 II2.00-06 ii3.200-04 200-05 II1.00-05 10 Jun 92 1.900 osli 1.00 05 II2.00-07 2.200 04 2.0005 1.0006 00-Orc-92 II1.600-05 1.80 05 II3.0006 7.800-04 Ii6.00-05 200-05 13 Apr93 2.600-0511 200-05 OE-R8 II3.400-0411 3.00 05 II2.00 05 27-Jan-93 II3.000-0511 1.4005 5.00 08 II0.0000011 3.00-0511 200-05 27 Oct-93 tao-coil 180-05 300-06 II4280-0411 8.00 0511 2.00 05 01-May-94 2.000 osil 5.00 88 19-Jul-94 750-0511 1.70-00 3.0005 II7.80-08 3.900 04 0.00 05 1.300-04 7.80-06 2.00-041 3.00-07 18 Nov94 II1.000-04 9.00 06 1.50-07 2.600 04 1.2085 74007 05-Apc-95 II1.700-0511 1.00-06 1.6007 07-Jul-95 II8.400-0611 6.00-07 II40-87 1.800-0411 i.so-osj 10 07 4.400-05 II4.20 08 7.00 071 09 Nov95 2.300 oslI 2.20 08 II1.7007 8.800 05 II9.8008 0.30-07 24-Apr-96 II4200-0511 220-06 1.70-07 1.000-04 6.70-08 1.8007 3lJnl96II 14-Nov-96 2.100-cS 2.00-06 1.80-07 II1.900-04 7.30-0011 8.20 07 21 Apr 97 0.500 0811 4.2007 40 07 II3.300 05 3.90 00 7.00 oil 05-Srp-97 5.380-0611 3.20-07 1.30 07 900-05 690-0711 8.3007 20 Nov97 soo-osH 9.50-07 5.9007 1.300 04 4.70 08 1.20-07 26 Mar98 7.900 0511 7.90 05 II7.9005 3.990 0411 3.900411 390-041 18-Jun-98 J.800-07 40-07 3.3000 II1.70-0711 1.70-07 1.70 87 09 Nov98 II4.300 osll 1.0006 7.8008 2.500 04 1.00-OS Ii300-07 IS-Apr 99 II2.400-0511 1.0008 1.20 07 II1.700-0411 000-0611 62007 07-Jul-99 II2230-0511 880-07 20-07 2.300-04 II7.00 0011 5.90 07j 07 Oar 99 1.500 94 3.00 08 II2.00 07 1.700 05 1.00 00 1.00-06 21-Apr-00 IIORE-oS 2.00-86 II1.20-07 1100-84 7.00-06 II6.1007 22 Jun00 1.390 08H 1.00071 2.4007 2.00004 1.0005 110-06 21-Orc-00 1.200-0611 900-07 II2.40-07 1.200-8411 300-05 1.2090 30 Apr 01 II1.000-0011 1.00 07 1.7007 8.50 07 N/A 030-07 14-Jun-RI II600-061 2.00-07 990-00 II1.100 08 2.0000 5.0007 17 Dry 01 II2.8500811 4.8005 1.20 07 II9.400 05 II3.70-00 600-07 07-May-02 II3.500-0511 210-00 760-07 II1.360-0411 5.80 00 II1.00 05 07 Jul 02 4.020 as 2.30 08 7.80 07 7.040 05 II4.10-0011 1.00-05 15-Orc-02 II0.100-0511 3.90-00 7.60-07 2.870 04 0.50 0011 1.00 05 21-Mar03 3.700 asH 2.8000 2.4000 2.6900511 2.00-06 3.70-06 10 Jun-03 1.300 osH 1.00-00 5.20-Ri 1.000-0711 1.0007 20-Nov03 1.800-04 1.300511 1.2007 1.420 R4 II8.4006 5.90-07 08-Apr-00 II400-0411 770-06 110-07 100-00 2.7006 5.50 07 12-Jun-00 II8510-0511 31000 II1.50 07 5.270 05 4.90 00 7.60-07 30Nov04 0.400 os 5.70-00 II3.00-08 3.390-00 II1.80-05 3.00 07 21-Apr-OS 1.700 asH 1.80 00 130071 4.500 05 3.0000 6.50-07 13 Jun-05 l.500-05H 60-0011 140-Ri 7.000-05 5.10-06 8.9007 10-Nov-05 3.800-0511 2.1008 0.80 1011 1300 08 4.0000 4.30-10 03 Apr00 1.000 04 8.00-00 II5.00-00 3.300-0011 1.10-0511 1.00 00 18-Jun-00 3.400-0511 2.50 00 II5.0008 1.370 00 8.00-00 II1.00-06 20 Nnv-R6f 7.310 osH 3.200-0011 1.600-Ri 2.980-04 8.500 0611 0.20007 30-Mar-07 3000-0511 2.200-0011 1.700 0711 3.200 04 7.900-00H 0.400-07 Jun 07 1.100 o4l 4.800001123 07 II3.200-04 1.100-0511 1.10000 19-Nov-Ri 5800-0511 5200-0611 5.0000811 6400 o41 1.900 as 1.000-00 22-Apr oo 5.200 os 2.300 06 7.200 ci 2.300 o41 1.580-05 080-08 18 Jun oolI 1.250 osH 22000011 1.800-08 5.000-0511 s.ooo-os 4.80003 20-Apr-09 2.600-051 2.900-0611 1.400-001 3.700 051 1.5000011 2.500-85 17-Jun 00 2.400051 1.400 0011 3.900 071 3.500-05 7900-0011 1.300 05 sn-w ENERGVLABORATQr.$itc 2393 Se/I Creek Hfqbway 82601 P0 Sw 3258 caspei WY82602LtA1Ta/I Free 888.23s.o5ts 235 Fax 3072841639 .caspflenergy am w.energy/aA cam ANALYTICAL SUMMARY REPORT June 02 2009 Denison Mines USA Corp 6425 Hwy 191 Standing UT 84511 Workorder No C09050068 Project Name Early Spring Vegetation Energy Laboratories Inc received the following samples for Denison Mines USA Corp on 5/1/2009 for analysis Sample ID Client Sample ID Collect Date Receive Date Matrix Test C09050068-001 Northeast BHV-1 04/28/09 1430 05/01/09 Vegetation Digestion Radiochemistry Lead 210 Radium 226 Same As Above Same As Above C09050068-002 North West 04/30/09 0900 05/01/09 Vegetation C09050068-003 South West 04/29/09 0700 05/01/09 Vegetation As appropriate any exceptions or problems with the analyses are noted in the Laboratory Analytical Report the QA/QC Summary Report or the Case Narrative If you have any questions regarding these tests results please call ReportApprovedfs P1tn-_-_ STEVE CARL.STON TCCWMrCAL izaccro ENERG VLABORATOpS INc 2393 Sail Creek 11qhway 8260 P0 Sax 3258 aspe WY82602 ____________Tail Free 888.235.0515 235 Fax 307234.1639 casper2energy am energy/a5.cam LABORA TORIES LABORATORY ANALYTICAL REPORT Report Date 06/04109 Collection Date 04/28/09 1430 DateReceived 05/01/09 Matrix Vegetation MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By RADIONUCLIDES TOTAL Lead 210 Lead 210 precision Lead 210 MDC Lead 210 altu Lead 210 precision altu Lead 210 MDC altu Radium 226 Radium 226 precision Radium 226 MDC Radium 226 altu Radium 226 altu precision Radium 226 altu MDC 3.4E-04 2.OE-05 2.8E-05 338 20.3 281 5.9E-04 .3E-05 .5E-06 587 13.5 1.5 uCi/kg uCi/kg uCi/kg pCi/kg pCi/kg pCi/kg uCi/kg uCi/kg uCi/kg pCI/kg pCi/kg pCi/kg E909.OM E909.OM E909.OM E909.OM E909.OM E909.OM E903.0 E903.0 E903.0 E903.0 E903.0 E903.0 05/19/09 0900 /dm 05/19/09 0900 /dm 05/19/09 0900 /dm 05/19/09 0900 /dm 05/19/09 0900 /dm 05/19/09 0900 /dm 05/26/09 2140 /jah 05/26/09 2140 /jah 05/26/09 2140 /jah 05/26/09 2140 /jah 05/26/09 2140 Ijah 05/26/09 2140 /jah Report RL Analyte reporting limit Definitions QCL Quality control limit MDC Minimum detectable concentration MCL Maximum contaminant level ND Not detected at the reporting limit Project Lab ID Client Denison Mines USA Corp Early Spring Vegetation C09050068-001 Client Sample ID Northeast BHV-1 ENERGVLJ4BORA TOPS INC 2393 Sail Creek Hjqhway 82801 P0 Box 3258 Caspe WV82602LSASSToilFree 888.235.0515 235 Fax 3072341639 casperenergyl in1 tenergy/ab corn L48O/A TORIES LABORATORY ANALYTICAL REPORT Report Date 05/04/09 Collection Date 04/30/09 0900 DateReceived 05/01109 Matrix Vegetation MCL/ Analyses Result Units Qualifiers RL QCL Method Analysis Date By RADIONUCLI DES TOTAL Lead 210 Lead 210 precision Lead 210 MDC Lead 210 aitu Lead 210 precision altu Lead 210 MDC altu Radium 226 Radium 226 precision Radium 226 MDC Radium 226 altu Radium 226 altu precision Radium 226 altu MDC .9E-04 .5E-05 2.2E-05 194 15.1 21.7 5.2E-05 3.6E-06 1.1E-06 52.4 3.6 1.1 uCi/kg uCi/kg uCi/kg pCi/kg pCi/kg pCi/kg uCi/kg uCi/kg uCi/kg pCi/kg pCi/kg pCi/kg E909.OM E909.OM E909.OM E909.OM E909.OM E909.OM E903.0 E903.0 E903.0 E903.0 E903.0 E903.0 05/19109 0900 1dm 05/19/09 0900 dm 05/19/09 0900/dm 05/19/09 0900 /dm 05/19/09 0900/dm 05/19/09 0900 1dm 05/26/09 2140 ljah 05/26/09 2140 jah 05/26/09 2140 Jah 05/26/09 2140 jah 05126/09 2140 jah 05/26/09 2140/jah Report RL Analyte reporting limit Definitions QCL Quality control limit MCL Maximum contaminant level Project Lab ID Client Denison Mines USA Corp Early Spring Vegetation C09050068-002 Client Sample ID North West MDC Minimum detectable concentration ND Not detected at the reporting limit ES/ERG VLABCJRA ivps is/c 2393 Sail Creek Hiqbway 82601 P0 Sox 3258 Caspei WV82602 _____________To//Free 888.235.0515 235.1 Fax 307.234.1639 casper.energy/wn wnergy/ab corn LABORATORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 06/04/09 Project Early Spring Vegetation Collection Date 04/29/09 0700 Lab ID C09050068-003 DateReceived 05/01/09 Client Sample ID South West Matrix Vegetation MW Analyses Result Units Qualifiers RL QCL Method Analysis Date By RADIONUCLIDES TOTAL Lead 210 3.7E-05 uCi/kg E909.OM 05/19/09 0900 /dm Lead 210 precision 1.5E-05 uCi/kg E909.OM 05/19/09 0900 /dm Lead 710 MDC 2.5E-05 uCi/kg E909.OM 05/19/09 0900 dm Lead 210 altu 36.6 pCI/kg E909.OM 05/19/09 09OO/dm Lead 210 precision altu 15.5 pCi/kg E909.OM 05/19/09 0900 dm Lead 210 MDC altu 25.2 pCi/kg E909.OM 05/19/09 0900 dm Radium 226 2.6E-05 uCi/kg E903.0 05/26/09 2140 /jah Radium 226 precision 2.9E-06 uCi/kg E903.0 05/26/09 2140/jah Radium 226 MDC .4E-06 uCi/kg E903.0 05/26/09 2140 jah Radium 226 altu 26.0 pCi/kg E903.0 05/26/09 2140/jah Radium 226 altu precision 2.9 pCi/kg E903.0 05/26/09 2140 jah Radium 226 altu MDC 1.4 pCi/kg E903.0 05/26/09 2140/jah Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration nvrrn ENERGVLASORArOP9 INC 23038a1/Creek Hqhway 8260 P0 Bwc3258 Caspe V41Y82602LASASThYFree 888.235.0515 2351 Fax 307234.1630 casperenergyI un energyIab.com QA/QC Summary Report Client Denison Mines USA Corp Project Early Spring Vegetation Analyte Method E9030 Sample ID LCS-22339 Laboratory Control Sample Radium 226 14 pCi/L Sample ID MB-22339 Method Blank Radium 226 -0.2 pCi/L Radium 226 precision 0.2 pCi/L Radium 226 MDC 0.4 pCi/L Sample ID C09050243-OOIFDUP Sample Duplicate Radium 226 -0.34 pCiIL Radium 226 precision 0.98 pCi/L Radium 226 MDC 1.8 pCi/L The Sample and Ihe Duplicate are both below the MDC the RPD is acceptable Sample ID C09050347-00IAMS Sample Matrix Spike Radium 226 140 pCi/Filter Method E909.0M Sample ID C0905006S-OO2AMS Lead 210 Sample ID C09050068-OO2AMSD Lead 210 Sample ID MB-R118766 Lead 210 Lead 210 precision Lead 210 MDC Sample ID LCS-R118766 Lead 210 Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration Sample Matrix Spike 0.0012 uCi/kg Sample Matrix Spike Duplicate 0.0011 uCi/kg Method Blank -4 pCi/L 20 pCi/L 30 pCi/L Laboratory Control Sample 460 pCi/L IL4SORA TOP/ES Result Units Report Date 06/04/09 Work Order C09050068 RL %REC Low Limit High Limit RPD RPDLimit Qual Batch 118643 Run BERTI-IOLD 770-2 09051 9A 05/26/09 2140 88 70 130 Run BERTHOLD 770-2_090519A 05/26/09 2140 LI Run BERTHOLD 770-2_090519A 70 130 320 Run BERTHOLD 770-2_09051 9A 92 70 130 05/26/09 2140 470.3 05/26/09 2322 Batch R118766 05/19/09 0900 05/19/09 0900 30 05/19/09 0900 05/19/09 0900 Run PACKARD 3100TR_090519B 112 70 130 Run PACKARD 3100TR_090519B 98 70 130 11 Run PACKARD 3100TR_090519B Run PACKARD 3100TR_090519B 82 70 130 ND Not detected at the reporting limit Not detected at minimum detectable concentration ENERGVLASORATO INC 2393 Sail Creek Hiqbway 82501 RU Sv3258 Casper WY82502 _____________ra//iYee 52350515 .235 Fax 307.234.1639 casparteaergyi in venergy/ab.com LAaO/t4 TORIES QA/QC Summary Report Client Denison Mines USA Corp Report Date 06/02/09 Project Early Spring Vegetation Work Order C09050068 Ltte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method E903.0 Batch 118643 Sample ID LCS-22339 Laboratory Control Sample Radium 226 14 pCi/L 88 Run BERTHOLD 770-2_090519A 70 130 05/26/09 2140 Sample ID MB-22339 Method Blank Radium 226 -0.2 pCi/L Radium 226 precision 0.2 pCi/L Radium 226 MDC 04 pCi/L Run BERTHOLD 770-2_090519A 05/26/09 2140 Sample ID C09050243-OOIFDUP Sample Duplicate Radium 226 -034 pCi/L Radium 226 precision 0.98 pCi/L Radium 226 MDC 1.8 pCLIL The Sample and the Duplicate are both below the MDC the RPO is acceptable Run BERTHOLD 770-2_090519A 70 130 320 05/2609 2140 470.3 Sample ID C09050347-OO1AMS Sample Matrix Spike Radium 226 140 pCi/Filter 92 Run BERTHOLD 770-2_090519A 70 130 05/26/09 2322 Method E909.OM Batch R118766 Sample ID C09050068-OO2AMS Sample Matrix Spike Lead 210 0.0012 uCi/kg 112 Run PACKARD 3100TR 0905198 70 130 05/19/09 0900 Sample ID C09050068-OO2AMSD Sample Matrix Spike Duplicate Lead 210 0.0011 uCi/kg 98 Run PACKARD 3IOOTR_090519B 70 130 11 05/19/09 0900 30 Sample ID MB-R118766 Method Blank Lead 210 -4 pCl/L Lead 210 precision 20 pCi/L Lead 210 MDC 30 pCi/L Run PACKARD 3100TR_090519B 05/19/09 0900 Sample ID LCS-R118766 Laboratory Control Sample Lead 210 460 pCi/L 82 Run PACKARD 3IOOTR_090519B 70 130 05/19/09 0900 Qualifiers RL Analyte reportIng limit ND Not detected at the reporting limit MDC Minimum detectable concentration Not detected at minimum detectable concentration 12 ci wI 2 CO P1 Co t CU I- EI V i T R G Y LA B O R A T O R I E S Ch a i n of Cu s t o d y an d An a l y t i c a l Re q u e s t Re c o r d PL E A S E PR I N T - Pr o v i d e as mu c h in f o r m a t i o n as po s s i b l e Co m p a r i y r m e cL t c r 11 Re p o r t Ma i l Ad d r ep--y In v o i c e Ad d r e s s Pr o j e c t Na m e PW S Pe r m i t Et c k1 Sg t c n c 7 L% t f l J Co n . t c f Na n Ph o n e / F a x j6 v u t i- q - k r wr z In v o i b e Co n t a c t Ph o n e Sa m p l e Or i g i n EP A / S t a t e Co m p l i a n c e St a t e Ye s No Em a i l Sa m p l e r Pl e a s e Pr i n t 77 cp 6 Mz K4 rr n 4 Pu r c h a s e Or d e r Qu o t e / B d t t l e Or d e r eS c v n t Pa g e /o f / Sp e c i a l R e p o r t / F o r m a t s EL I mu s t be no t i f i e d pr i o r to sa m p l e su b m i t t a l fo r th e fo l l o w i n g DD W DA 2 L A GS A ED D / E DT E l e c t r o n i c Da t a PO T W / V V W T P Fo r m a t _ _ _ _ _ _ _ _ DS t a t e __ _ _ _ _ _ LE V E L IV Ot h e r __ _ _ _ _ _ _ _ NE L A C Co n t a c t E L I pr i o r to RU S H sa m p l e su b m i t t a l fo r ch a r g e s an d sc h e d u l i n g Se e In s t r u c t i o n Pa g e SA M P L E ID E N T I F I C A T I O N Na m e Lo c a t i o n In t e r v a l et c Co l l e c t i o n Da t e Co l l e c t i o n Ti m e Sh i p p e d by ft N 4 Co m m e n t s co o l e r ID s MA T R I X Re c e f l 7 f r On Ic e /f - \ Th Ye s cu s t o d y se a t - 7 N 1- Bo t t l e s %t_ J co o l e s In t a c t lL v t Sig n a t u r e Ma t c h 44 f iu - / 2V o ob $ L t D e s J z9 - e y 93 O w 7 /- L 4 I g f l my rx % t i- V i- U /- V or Ii i Cu s t o d y us t 1 by SP 4 t Da t e r n m e j p 3 0 na t u r e aW i i m e Sig n a t u r e c4 t4 / W y fl D . 7 c t 7 /c . v t -c _ ne c O r u eli n L i s h e d by pr i n t Da t e i t i m e Sig n a t re Re c e i v e d by pr i n t Da t e / T i m e Sig n a t u r e MU S T be Re c e i v e d b y La b o r a t o r y Da t Sig n a t u r e Si g n e d Sa m p l e Di s p c s a l Re t u r n to Cli e n t La b Di s p o s a l f/ u q In ce r t a i n ci r c u m s t a n c e s sa m p l e s su b m i t t e d to En e r g y La b o r a t c r i e s In c ma y be su b c o n t r a c t e d to ot h e r ce r t i f i e d la b o r a t o r i e s in or d e r to co m p l e t e th e an a l y s i s re q u e s t e d Th i s se r v e s a s no t i c e of th i s po s s i b i l i t y All su b - c o n t r a c t da t a wil l be cl e a r l y no t a t e d on yo u r an a l y t i c a l r e p o r t Vis i t ou r we b si t e at ww w . e n e r c i y l a b . c o m fo r ad d i t i o n a l in f o r m a t i o n do w n l o a d a b l e fe e sc h e d u l e fo r m s an d li n k s Energy Laboratories Inc I1o rko rd Rece jt ec list iii1IIIiiJI IOhIIlllI IVIllIllOI Denison Mines USA Corp C09050068 Login completed by Corinne Wagner Date and Time Received 5/1/2009 930 AM Reviewed by Received by ckw Reviewed Date Carrier name Next Day Air Shipping container/cooler in good condition Yes No Not Present Custody seals intact on shipping container/cooler Yes No Not Present fl Custody seals intact on sample bottles Yes No Not Present Chain of custody present Yes El No Chain of custody signed when relinquished and received Yes No Chain of custody agrees with sample labels Yes El No Samples in proper container/bottle Yes No Sample containers intact Yes No Sufficient sample volume for indicated test Yes No All samples received within holding time Yes El No Container/Temp Blank temperature N/At Water VOA vials have zero headspace Yes No No VOA vials submitted El Water pH acceptable upon receipt Yes No Not Applicable jj Contact and Corrective Action Comments None ENERCYLJ4SORATOr ItJ 2393 Salt CreekHqhway82601 20 Brtv 3258 Caspe.c WY82802 _____________ToIl .frae 898.235.0515 235.1 Fax 307234.1639 caspefiWenergy 2111 venergylab.com zAaoAToRIEs CLIENT Denison Mines USA Corp Date 02-Jun-09 Project Early Spring Vegetation CASE NARRATIVE Sample Delivery Group C09050068 ORIGINAL SAMPLE SUBMITTALS All original sample submittals have been returned with the data package SAMPLE TEMPERATURE COMPLIANCE 4C 2C 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 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 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 days SOILISOLID SAMPLES All samples reported on an as received basis unless otherwise indicated ATRAZINE SIMAZINE AND PCB ANALYSIS USING EPA 505 Data for Atrazine and Simazine are reported from EPA 525.2 not from EPA 505 Data reported by ELI using EPA method 505 reflects the results for seven individual Aroclors When the results for all seven are ND not detected the sample meets EPA compliance criteria for PCB monitoring SUBCONTRACTING ANALYSIS Subcontracting of sample analyses to an outside laboratory may be required If so ENERGY LABORATORIES will utilize its branch laboratories or qualified contract laboratories for this service Any such laboratories will be indicated within the Laboratory Analytical Report BRANCH LABORATORY LOCATIONS eli-b Energy Laboratories Inc Billings MT eli-g Energy Laboratories Inc Gillette WY eli-h Energy Laboratories Inc Helena MT eli-r Energy Laboratories Inc Rapid City SD eli-t Energy Laboratories Inc College Station TX CERTIFICATIONS USEPA WY00002 Radiochemical WY00937 FL-DOH NELAC E87641 Radiochemical E871017 California O2IISCA Oregon WY20000I 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 CASPERWY certifies that certain method selections contained in this report meet requirements as set forth by the above acorediting 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 ELIs certification coverage by visiting www.energylab.com ELI appreciates the opportunity to provide you with this analytical service For additional information and services visit our web page www.energylab.com THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT ENERGYLABORA Tqrcs it/C p2393 Se/I Creek Hq/iway 82601 EaP-v 3258 Caspe4 WV82602 To/I Free 888.2350515 .235.0515 FaK 30Z234 1639 caspen9enargjl via wwwenergy/ab.com LABORATORiES ANALYTICAL SUMMARY REPORT July 30 2009 Denisort Mines USA Corp 6425 Hwy 191 Blanding UT 84511 Workorder No C09060845 Project Name Late Spring Vegetation Energy Laboratories Inc received the following samples for Denison Mines USA Corp on 6/19/2009 for analysis Sample ID Client Sample ID Collect Date Receive Date Matrix Test C09060845-001 South West 06117/09 0840 06119/09 C09060845-002 North West 06/17/09 1220 0611 9/09 Vegetation C09060845-003 North East 06/17/09 1310 06/19/09 Vegetation Vegetation Digestion Radiochemistry Lead 210 Radium 226 Same As Above Same As Above As appropriate any exceptions or problems with the analyses are noted in the Laboratory Analytical Report the QNQC Summary Report or the Case Narrative If you have any questions regarding these tests results please call Report Approved By Steven Cariston Technica Director nnfl ENERGYLABORATqPFS INC 2393 Sail Creak Hirbway 82801 RO.P-v 3258 Caspe WY82802LMSM4S2STa/I free 888.235.0515 235.o5t5 Fax 307234.1839 casperenergfl vm www energy/ab corn tAaoRA TORIES LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denison Mines USA Corp Late Spring Vegetation C09060845-001 South West Report Date 07/30/09 Collection Date 06/17/09 0840 Date Received 06/19/09 Matrix Vegetation MCL/ Analyses Result Units Qualifiers RL DCL Method Analysis Date By RADIONUCLIDES TOTAL Lead 210 Lead 210 precision Lead 210 MDC Lead 210 altu Lead 210 precision altu Lead 210 MDC altu Radium 226 Radium 226 precision Radium 226 MDC Radium 226 altu Radium 226 altu precision Radium 226 altu MDC 3.5E-05 7.9E-06 .3E-05 34.6 79 12.7 2.4E-05 .4E-06 3.9E-07 24.2 1.4 0.39 uCi/kg uCi/kg uCi/kg pCi/kg pCi/kg pCi/kg uCi/kg uCi/kg uCi/kg pCi/kg pCi/kg pCi/kg E909.OM E909.OM E909.OM E909.OM E909.OM E909.OM E903.0 E903.0 E903.0 E903.0 E903.0 E903.0 07/09109 0856 dm 07/09/09 0856 dm 07/09/09 0858 /dm 07/09/09 0856 /dm 07/09/09 0856 dm 07/09/09 0856 dm 07/13/09 1842/trs 07/13/09 1842 trs 07/13/09 1842 trs 07/13/09 1842 trs 07/13/09 1842 /trs 07/13/09 1842 /trs Report RL Analyte reporting limit Definitions QCL Quality control limit MDC Minimum detectable concentration MCL Maximum contaminant level ND Not detected at the reporting limit SNERG YLASORA lvpcS INC 2393 Sail Greek Hfqhway 82501 P0 3258 Gaspei WY82502 ____________To/tFree888.235.0515 235.0515 Fax 307234.1539 casperSener v/n www.eaergylab.com LASORATO//ES Client Denison Mines USA Corp Client Sample ID North West LABORATORY ANALYTICAL REPORT Report Date 07/30/09 Matrix Vegetation RADIONUCLIDES TOTAL Lead 210 Lead 210 precision Lead 210 MDC Lead 210 altu Lead 210 precision altu Lead 210 MDC altu Radium 226 Radium 226 precision Radium 226 MDC Radium 226 altu Radium 226 altu precision Radium 226 altu MDC 4.3E-05 .OE-05 .7E-05 43.2 10.5 16.8 2.3E-05 .6E-06 5.2E-07 23.4 1.6 0.52 uCi/kg uCi/kg uCi/kg pCi/kg pCi/kg pCi/kg uCi/kg uCi/kg uCi/kg pCi/kg pCi/kg pCi/kg E909.OM E909.OM E909.OM E909.OM E909.OM E909.OM E903.0 E903.0 E903.0 E903.0 E903.0 E903.0 07/09109 0856 /dm 07/09/09 0856 /dm 07/09/09 0856 1dm 07/09/09 0856 /dm 07/09/09 0856 /dm 07/09/09 0856 /dm 07113109 1842 trs 07/13/09 1842/Irs 07/13/09 1842 /trs 07/13/09 1842 trs 07/13/09 1842 /trs 07/i 3/09 1842 ltrs Report RL Analyte reporting limit Definitions QCL Quality control limit MCL Maximum contaminant revel Project Late Spring Vegetation Collection Date 06/17/09 1220 Lab ID C09060845-002 DateReceived 06/19/09 MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By MDC Minimum delectable concentration ND Not detected at the reporting limit ENERGYLABORA TOPffS INC 2393 Sail Creek Hiqhway 82601 AC flay 3258-Caspe WV82602 ____________To//Free 888.235.0515 285.0515 Fax 307234.1639 caspenWenerg orn www energy/at corn t480RATO//ESr Client Project Lab ID Client Sample ID North East LABORATORY ANALYTICAL REPORT Report Date 07/30/09 Collection Date 06/17/09 1310 DateReceived 06/19/09 Matrix Vegetation MCU Analyses Result Units Qualifiers RL QCL Method Analysis Date By RADIONUCLIDES TOTAL Lead 210 Lead 210 precision Lead 210 MDC Lead 210 altu Lead 210 precision altu Lead 210 MDC altu Radium 226 Radium 226 precision Radium 226 MDC Radium 226 altu Radium 226 allu precision Radium 226 allu MDC 3.6E-05 lIE-OS .8E-05 35.9 11.1 18.0 .9E-05 .4E-06 4.9E-07 19.3 1.4 0.49 uCi/kg uCi/kg uCi/kg pCi/kg pCi/kg pCi/kg uCi/kg uCi/kg uCi/kg pCi/kg pCi/kg pCi/kg E909.OM E909.OM E909.OM E909.OM E909.OM E909.OM E903.0 E903.0 E903.0 E903.0 E903.0 E903.0 07/09/09 0856 /dm 07/09/09 0856 dm 07/09/09 0856 dm 07/09/09 0856 /dm 07/09/09 0856 /dm 07/09/09 0856 dm 07/13/09 2020 /trs 07/13/09 2020 trs 07/13/09 2020 trs 07/13/09 2020 trs 07/13/09 2020 trs 07/13/09 2020 trs Report RL Analyte reporting limit Definitions QCL Quality control limit MDC Minimum detectable concentration MCL Maximum contaminant level ND Not detected at the reporting limit Denison Mines USA Corp Late Spring Vegetation C09060845-003 ENERGYLABORA TOP4S INC 2393 Sail Creek Hfqbway 82501 RO Rr 3258 Caspoi WV82802 ____________To/I Free 855235.0515 .i Fax 307.234.1639 caspercPenergfi via www.energylab.com JS400RATOR/ES QA/QC Summary Report Client Denison Mines USA Corp Report Date 07/30/09 Project Late Spring Vegetation Work Order C09060845 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method E903.0 Batch R120811 Sample ID MB-22848 Method Blank Run BERTHOLD 770-1_090702B 07/13/09 1842 Radium 226 2E-07 uCl/kg Radium 226 precision IE-07 uCi/kg Radium 226 MDC 3E-07 uCi/kg Sample ID LCS-22846 Laboratory Control Sample Run BERTHOLD 770-1_090702B 07/13/09 1842 Radium 226 1.6E-05 uCi/kg 106 70 130 Sample ID C09060845-OOIAMS Sample Matrix Spike Run BERTHOLD 770-1_090702B 07/13/09 1842 Radium 226 5.5E-05 uCi/kg 69 70 180 Spike response is outside of the acceptance range for this analysis Since the LCS snd the RPD for the MS MSD pair are acceptable the response is considered to be matrix related The batch Is approved Sample ID C09060845-OOIAMSD Sample Matrix Spike Duplicate Run BERTHOLD 770-1_090702B 07/13/09 1842 Radium 226 5.8E-05 uCi/kg 77 70 130 5.6 21.1 Method E909.OM Batch Ri 21 299 Sample ID C09061228-OO2AMS Sample Matrix Spike Run BECKMAN 6100TA_090709A 07/09/09 0856 Lead 210 0.022 uCi/kg 71 70 130 Sample ID C09061 228-OO2AMSD Sample Matrix Spike Duplicate Run BECKMAN 61 OOTA_0B0709A 07/09/09 0856 Lead 210 0.034 uCi/kg 113 70 130 45 30 The RPD for the MSD is high The individual spike recoveries are within range the MB is acceptable and the LCS is within range therefore the batch is approved Sample ID MB-R121299 Method Blank Run BECKMAN 6IOOTA_090709A 07/09/09 0856 Lead 210 4E-06 uCi/kg Lead 210 precision E-05 uCi/kg Lead 210 MDC 2E-05 uCi/kg Sample ID LCS-R121299 Laboratory Contrnl Sample Rum BECKMAN 6100TA_090709A 07/09/09 0S5A Lead 210 0.00054 uCi/kg 95 70 130 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration RPD exceeds advisory limit Spike recovery outside of advisory limits Not detected at minimum detectable concentration Ch a i n of Cu s t o d y an d An a l y t i c a l Re q u e s t Re c o r d PL E A S E PR I N T - Pr o v i d e a s mu c h in f o r m a t i o n as - Co m p a n y 4 a m e JJ e A C s o tA S Re p o r t Ma i l Ad d r e s s In v o i c e A_ Pr e c t Na m e PW S Pe r m i t Et c Sa m p l e Or i g i n St a t e Co n t a c t Na m e Ph o n e a x Em a i l ln o h j e Co n t a c t Ph o n e Pu r c h a s e Or d e r EP A / S t a t e Co m p l i a n c e Ye s Nc Sa m p l e r Pl e a Pr i n t Qu o t l l B o t t l e Or d e r Sp e c i a l R e p o r t / F o r m a t s EL I mu s t be no t i f i e d pr i o r to sa m p l e su b m i t t a l fo r th e fo l l o w i n g DW LI A2 L A GS A ED D / E D T E l e c t r o n i c Da t a PO T W I W W T P Fo r m a t _ _ _ _ _ _ _ St a t e LE V E L IV Ot h e r NE L A C 9Icn c1 $ ti - WIal to to Co n t a c t EL I pr i o r to RU S H sa m p l e su b m i t t a l fo r ch a r g e s an d sc h e d u l i n g S e e In s t r u c t i o n Pa g e Ip ed by QS cj /3 Li co co o r e r ID s ca - Co m m e n t s em p Re c e l p L ct V On Ic e No Cu s t o d y Se a t Bo t t l e s Co o l e r s In t a c t SIg n a t u r e Ma t c h __ _ _ _ __ _ _ _ SA M P L E ID E N T I F I C A T I O N Na m e Lo c a t i o n In t e r v a l et c So d L i e s c v s a 7 2/ V j e t f 7 s j rk / t 9 s Co l l e c t i o n Da t e i7 6 7 91 T 0 9 67 O Co l l e c t i o n Ti m e dS ir i p 13 / 0 MA T R I X i- V t\ J -4 / JR Ø i v e d W P W o7 T i m e Sig n a t u r e Re c e i v e d by pr i n t Da t e / T i m e Sig n a t u r e Cu s t o d y Re c o r d Fp p 9 / J 1 at e 7 j/ 7 5 7i n a t u F / Iin q dIe d by rin t Da t e / T i m e ig n a t u r Si g n e d Sa m p l e Di s p o s a l Re t u r n to cl i e n t LA b Di s p o s a l ce l v e d by La b o r a t o r y Da t e f r i n i e at u r e f4 n d r e c ar f t t/ n In ce r t a i n ci r c u m s t a n c e s s a m p l e s su b m i t t e d to En e r g y La b o r a t o r i e s I n c ma y be su b c o n t r a c t e d to ot h e r ce r t i f i e d la b o r a t o r i e s in or d e r to co m p l e t e th e a5 s i e q u e s t e d Th i s se r v o s a s no t i c e of th i s po s s i b i l i t y All su b - c o n t r a c t da t a wil l be cl e a r l y no t a t e d on yo u r an a l y t i c a l r e p o r t Vis i t ou r we b si t e at ww w . e n e r q y l a b . c o m fo r ad d f t i c n a l in f o r m a t i o n do w n l o a d a b l e fe e sc h e d u l e fo r m s an d li n k s EN F R G Y LA I 3 O R A T O R I E S Pa g e of l Energy Laboratories Inc tlIo rko rd Recel Cli ec kI 1st Denison Mines USA Corp C09060845 Login completed by Halley Ackerman Date and Time Received 6/19/2009 930 AM Reviewed by Received by al Reviewed Date Carrier name Next Day Air Shipping container/cooler in good condition Yes No Not Present Custody seals intact on shipping container/cooler Yes No Not Present Custody seals intact on sample bottles Yes No Not Present Chain of custody present Yes No Chain of custody signed when relinquished and received Yes I1 No Chain of custody agrees with sample labels Yes No Samples in proper contalnerlbottle Yes I1 No Sample containers intact Yes No Sufficient sample volume for indicated test Yes No All samples received within holding time Yes No Container/Temp Blank temperature NA Water-VOA vials have zero headspace Yes No NoVOAvialssubmitted Water ph acceptable upon receipt Yes No Not Applicable Contact and Corrective Action Comments None ENERGYLASORATOPS INC P2393 Sail Creek Hiqbway 82601 PC 8v3258 Caspei PVV82602 ____________Toll Free 858.235.0515 235.0515 Fax 307234.7639 casperrPenerg cm wwwenergy/ab.com .BO/t4TOR/ES CLIENT Denison Mines USA Corp Date 30-Jul-09 Project Late Spring Vegetation CASE NARRATIVE Sample Delivery Group C09060845 ORIGINAL SAMPLE SUBMITTALS All original sample submittals have been returned with the data package SAMPLE TEMPERATURE COMPLIANCE 4C 2C 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 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 days The time delay in returning the canister tc 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 days SOIL/SOLID SAMPLES All samples reported on an as received basis unless otherwise indicated ATRAZINE SIMAZINE AND PCB ANALYSIS USING EPA 505 Data for Atrazine and Simazine are reported from EPA 525.2 not from EPA 505 Data reported by ELI using EPA method 505 reflects the results for seven individual Aroclors When the results for all seven are ND not detected the sample meets EPA compliance criteria for PCB monitoring SUBCONTRACTING ANALYSIS Subcontracting of sample analyses to an outside laboratory may be required If so ENERGY LABORATORIES will utilize its branch laboratories or qualified contract laboratories for this service Any such laboratories will be indicated within the Laboratory Analytical Report BRANCH LABORATORY LOCATIONS eli-b Energy Laboratories Inc Billings MT eli-g Energy Laboratories Inc Gillette WY eli-h Energy Laboratories Inc Helena MT eli-r Energy Laboratories Inc Rapid City SD eli-t Energy Laboratories Inc College Station TX CERTIFICATIONS USEPA WY00002 Radiochemical VVY00937 FL-DOH NELAC E87641 Radiochemical E871017 California 02118CA Oregon WY20000I Utah 3072350515 Virginia 00057 Washington 01903 150 17025 DISCLAIMER The results of this Analytical Report relate only to the items submitted for analysis ENERGY LABORATORIES INC CASPERWY 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 ELIs certification coverage by visiting www.energylab.com ELI appreciates the opportunity to provide you with this analytical service For additional information and services visit our web page www.energylab.com THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT Attachment FOURTH QUARTER RADIONUCLIDE EMISSIONS TEST CONDUCTED AT DENISON MINES CORPORATION NORTH YELLOW CAKE SCRUBBER YELLOW CAKE DRYER BAGHOUSE GRIZZLY BAGHOUSE BLANDING UTAH December 29-30 2008 by TETCO 391 East 620 South American Fork UT 84003 Phone 801 492-9106 Fax 801 492-9107 fax Prepared for Denison Mines Corporation 6425 Hwy 91 Blanding Utah 84511 Date of Report June 11 2009 TABLE IV NYC Scrubber COMPLETE RESULTS DENISON MINES CORPORATION BLANDING UTAH NORTH YELLOWCAKE SCRUBBER EXHAUST Symbol Description Dimensions Run Run Date 12129108 12130108 Filter 5210 5211 Begin TimeTestBegan 1039 716 End TimeTestEnded 1841 1518 Pbm Meter Barometric Pressure In Hg Abe 24.80 24.65 AH Orifice Pressure Drop to HO 1.405 1.579 Meter Calibration Factor dimensionless 1.001 .001 Vm Volume Gee Sampled--Meter Conditions cf 369.057 388.361 Tm Avg Meter Temperature 86 89.9 1AP Sq Root Velocity Head Root In H20 0.2695 0.2851 Wc Weight Water Collected Grams 673.1 850.2 Duration of Test Minutes 480 480 Pitot Tube Coefficient Dimensionless 0.84 0.84 Dn Nozzle Diameter Inches 0.3900 0.3900 CO7 Volume Carbon Dioxide Percent 3.00 3.00 02 Volume Oxygen Percent 17.80 17.60 N2 CO Volume Nitrogen and Carbon Monoxide Percent 79.20 79.40 Vnl5td Volume Gas Sampled Standard dacf 297.294 308.970 Vw Volume Water Vapor scf 31.737 40.087 Bw5 measured Fraction 140 in Stack Gas Measured Fraction 0.096 115 Bw5 saturated Fraction H70 in Stack Gas Saturated Fraction 0.078 0.092 Bw5 Fraction 140 in Stack Gas Fraction 0.07 0.092 Xd Fraction of Diy Gae Fraction 0.922 0.908 Md Molecular Wt Dry Gas Ib/Ibmol 29.19 29 18 M5 MoleculsrWt Stack Gas Ib/Ibmol 28.31 28.16 %I Percent Isokinetic Percent 100.1 100.3 AVG T5 AvgStackTemperature 100.1 105.2 102.7 A5 Stack Cross Sectional Area Sq Ft 1.767 1.767 Stack Static Pressure In 140 -0.040 -0.040 Pb Sample Port Barometric Pressure In Hg Aba 24.73 24.58 P5 Stack Pressure In Hg Abs 24.727 24.577 Q5 Stack Gas Volumetric Flow Rate Std dscfln .32E03 .37E03 1.34E03 Q5 Stack Gas Volumetric Flow Rate Actual cOn .84E03 .96E03 1.90E03 V5 Velocity of Stack Gas fl2m .04E03 1.11 E03 .07E03 Curies Radionuclidespersample pCi 1.337E04 1.885E04 Crad Concentration of Radionuclides pCi/dacf 4.497E0 6.1 02E0 5.299E01 ERrad Emission Rate of Radionuclides pCi/br 3.556E06 5.005E06 4.280E06 If the measurcd moisture content is greater than the saturated moisture level supersaturated the saturated moisture value will be used in all calculations 40 CFR 60 Method Section 12.1.7 Dryer Saghouse TABLE COMPLETE RESULTS PM DENISON MINES CORPORATION YELLOW CAKE DRYER BAGHOUSE Symbol Description Dimensions Run Date Date 12/29/08 Filter 5213 Begin Time Test Began 1039 End Time Test Ended 1840 Pbm Meter Barometric Pressure In Hg Abs 24.80 AH Orifice Pressure Drop In HO 1.383 Meter Calibration Factor dimensionless 0.994 Vm Volnme Gas Sampted-.Meter Conditions cf 383 119 Tm Avg Meter Temperature 94.5 JAP Sq Root Velocity Head Root In H20 0.5011 VLc Weight Water Collected Grams .7 Duration of Test Minutes 480 Pitot Tube Coefficient Dimensionless 0.84 Dn Nozzle Diameter Inches 0.2765 CO2 Volume Carbon Dioxide Percent 0.00 02 Volume Oxygen Percent 20.90 N2 CO Volume Nitrogen and Carbon Monoxide Percent 79.10 Vm5td Volume Gas Sampled Standard dscf 30 .801 Vw Volume Water Vapor scf .495 Bw5 Fraction HO in Stack Gas Fraction 0.005 Xd Fraction of Dry Gas Fraction 0.995 Md Molecular Wt Dry Gas Ib/Ibmol 28.84 M5 Molecular Wt Stack Gas Ib/Ibmol 28.78 %I Percent Isokinetic Percent 99.3 T5 Avg Stack Temperature 75.3 A5 Stack Cross Sectional Area Sq Ft 1.396 P0 Stack Static Pressure tn HO 0.21 Pb Sample Port Barometric Pressure In Hg Abs 24.73 P5 Stack Pressure In Hg Abs 24.715 Q5 Stack Gas Volumetric Flow Rate Std dscfln 12E03 Qa Stack Gas Volumetric Flow Rate Actual cfin 2.61 E03 V5 Velocity of Stack Gas Thm .87E03 Curies Radionuclidee per sample pCi .093 E05 Crad Concentration of Radionuclides pCi/dscf 3.621 E02 ERrad Emission Rate of Radionuclides pCi/hr 4.606E07 Grizzly TABLE VI COMPLETE RESULTS PM DENISON CORPORATION GRIZZLY BAGHOIJSE Symbol Description Dimensions Run Date Date 12/30/08 Filter 5212 Begin Time Test Begsn 914 End Time Test Ended 1720 Pbm Meter Bsrometric Pressure In Hg Abs 24.65 AH Orifice Pressure Drop In lI2O 1.510 Meter Calibrstion Fsetor dimensionless .006 Vm Volume Gss sampled--Meter Conditions ci 59.572 Tm Avg Meter Temperature 88.9 lAP sq Root Velocity Head Root In H20 0.1905 \Vtwe Weight Water Collected Grams 30.6 T5 Duration of Test Minutes 480 Pitot Tube Coefficient Dimensionless 0.84 Dn Nozzle Diameter Inches 0.4405 CO2 Volume Carbon Dioxide Percent 0.00 02 Volume Oxygen Percent 20.90 N2 CO Volume Nitrogen and Carbon Monoxide Percent 79 Vm5Id Volume Gas sampled standard dscf 287.960 Vw Volume Water Vapor scf .443 Bw5 Fraction H20 in stack Gas Fraction 0.005 Xd Fraction of Dry Gas Fraction 0.995 Md Molecular WI Dry Gas Ib/Ibmol 28.84 M5 Molecular WI stack Gas lb/Ibmol 28.78 n/uI Percent Isokinetic Percent 96.2 T5 Avg stack Temperature 52.2 A5 stack Cross 5ectional Area 5q Ft .9 P0 5tack static Pressure In HO -0.02 Pb 5ample Port Barometric Pressure In Hg Abs 24.62 P5 5tack Pressure In Hg Abs 24.619 Q5 5tack Gas Volumetric Flow Rate 51d dscfin 13 E03 Qa stack Gas Volumetric Flow Rate Actual ellis .34E03 V5 Velocity of stack Gas 1km 6.98E02 Curies Radionuclides per sample pCi .21 OE0 Crad Concentration of Radionuclides pCildscf 4.201 E-02 ERrad Emission Rate of Radionuclides pCi/hr 2.846E03 AMENDED REPORT UNIT CONVERSION Sample Results Summary Date 10-Jun-09 TestAmerica Ordered by Method Batch No Cflerit Sampie ID Report No 41713 SDG No 39277 Client Id Tracer MDC or Batch Work Order Parameter Result t-Uncertainty 2$Qual Units Yield MbA CRDL RER2 9072382 E295 5212 K8FOC1AC U-234 3.166-06 ---8.236-07 UCI/SA 89%3.606-08 U-235 1.266-07 6.996-08 UCi/SA 69%3176-08 U-238 2.89E-06 7.58E-07 UC1/SA 89%3.936-08 9127501 E2SS 5210 K8FXO2AC U-234 6.556-03 2.35E-03 UC1/SA 106%9.226-05 U-235 2.986-04 1.566-04 UC1/SA 106%9.22E-05 U-238 6.506-03 2.346-03 UCi/SA 106%7.31E-05 5211 KBFOA2AC U-234 8.936-03 3.196-03 UC1/SA 106%1.226-04 U-235 3.356-04 1.676-04 UC1/SA 106%7466-05 U-235 9.566-03 3.41 6-03 UC1/SA 106%9.426-05 5213 K8FOD2AC U-234 5.366-02 2.046-02 UC1ISA 99%1.966-04 U-235 2.096-03 8.58E-04 UCI/SA 99%1.156-04 U-238 5.36E-02 2.046-02 UCI/SA 99%1.866-04 9072379 RICHCR5OII 5210 K8FX01M TH-228 8.186-07 1.356-07 UC1ISA 631%1.57E-08 Ti-I-230 7.686-07 1.266-07 UCIISA 631%6.326-09 3.006-15 11-1-232 9.45E-09 6.126-09 UC1/SA 631%6.32E-09 5211 K8FOA1M 11-1-228 8.206-07 1.34E-07 UC1/SA 1140%8.84E-09 TH-230 8.996-07 1.456-07 UCI/SA 1140%6.226-09 3.006-15 T1-I-232 1.076-08 6.21 6-09 UCI/SA 1140%6.226-09 5212 K8FOC1M 11-1-228 9.206-07 1.476-07 UCI1SA 108%6.71E-09 TH-230 1.516-06 2.346-07 UCI/SA l08%4.836-09 3.006-15 T1-i-232 1.056-08 5.646-09 UCI/SA 108%4.836-09 5213 K8FOD1AA TI-I-228 8.646-07 1.346-07 UCI/SA 510%5.096-09 Ti-i-230 1.286-06 1.976-07 UCI/SA 510%5.856-09 3.006-15 11-I 232 1.32E-08 6.226-09 UC1ISA 510%4.646-09 9072376 RICIIRC5OI 5210 K8FXOIAE PB-210 2.136-05 i--4.506-06 UCI/SA 31%1.546-06 6.006-14 5211 TestAmerica RER2 Replicate Error Ratio S-D/as defined by ICPT BOA rptstLRchsasum mary2 V5.2.3 P2002 TestAmerica Laboratories Inc Report No 41713 Client Id Batch Work Order Parameter 9072376 RICHRCSOI 5211 KSFOA1AE P6-210 5212 K8FOCIAE P6-210 5213 K8F0D1AE P6-210 9072377 RICHRCSOO5 5210 K8FX0IAD RA-226 5211 K8FOAIAD RA-226 5212 K8FOC1AD RA-226 5213 KSFOD1AD RA-226 No of Results 32 AMENDED REPORT UNIT CONVERSION TestAmerica rptSTLRch5a3um mary2 V5.2.3 A2002 RER2 Replicate Error Ratio S-DtfsqrtsqTPUssqFPUJj as defined by LCPT BOA Sample Results Summary TestAmerica Ordered by Method Batch No Client Sample ID Date 10-Jun-09 SDG No 39277 Tracer MDC or Result Uncertainty 2s Qual Units Yield MDA CRDL RER2 2.58E-05 5.40E-06 UCI/SA 38%1.31 E-06 6.OOE-14 2.83E-06 8.61E-07 UCI/SA 38%9.26E-07 6.OOE-14 1.29E-06 6.42E-07 UCI/SA 44%9.26E-07 6.OOE-14 2.16E-07 1.08E.07 UCI/SA 96%1.21E-07 9.OOE-14 3.34E-07 .33E-07 UCI/SA 97%.20E-07 9.OOE-14 .58E-06 t-3.96E-07 UCI/SA 98%.15E-07 9.OOE-14 3.25E-07 1.50E-07 UCI/SA 99%1.85E-07 9.COE-14 C./ 1/ 572- 39t tzO7G E- ic t/ TestArrterjca Laboratories Inc AMENDED REPORT UNTT CONVERSION QC Results Summary Date 10-Jun-09 TestAmerica Ordered by Method Batch No OC Type Report No 41713 SDG No 39277 Batch Tracer LCS Work Order Parameter Result 4-Uncertainty 25 Qual Units field Recovery Bias MDCIMDA E2SS 9072382 BLANK OC K8K4KIM U-234 2.83E-08 I--3.46E-08 UCI/SA 84%6.03E-08 0-235 -2.70E-09 I-.40E-08 UCI/SA 84%3.81 E-08 U-238 8.OBE-09 1--2.48E-O8 UCI/SA 84%6.03E-08 9072382 LCS K8H4KIAC 0-234 2.76E-06 7.58E-07 UCI/SA 67%161%0.6 4.29E-08 0-235 6.77E-08 6.06E-OB UCI/SA 67%112%0.1 4.29E-08 0-238 2.57E-06 --7.IOE-07 UCI/SA 67%143%0.4 5.08E-08 E2SS 9127501 BLANK OC LCJ9E1AA 0-234 4.35E-08 4.91 E-08 UCI/SA 96%8.01 E-08 0-235 -1 .09E-08 3.08E-08 UCI/SA 96%8.01 BUS 0-238 3.27 E-O8 4.89E-08 UCI/SA 96%8.01 E-08 9127501 LCS LCJ9EIAC 0-234 56E-06 6.74E-07 LJCI/SA 104%90%-0.1 7.47E-06 0-235 1.73E-07 9.68E-08 UCI/SA 104%98%0.0 9.43E-08 U-238 3.99E-06 7.42E-07 UCI/SA 104%97%0.0 9.43E-08 RICHCRSOII 9072379 BLANK OC K8I-1371AA TH-228 9.97E-07 1.645-07 UCI/SA 105%1.1OE-08 TH-230 3.33E-09 4-4.115-09 UCI/SA 105%6.135-09 TH-232 8.335-10 -2.36E-09 UCI/SA 105%6.135-09 9072379 LCS K8H37IAC TH-228 8.61E-07 1.425-07 UCI/SA 105% 34%-0.7 1.055-08 TH-230 2.485-08 3.925-07 UCI/SA 105% 108%0.1 7.26E-09 TH-232 2.025-09 3.035-09 UCI/SA 105%0%-1.0 4.975-09 RICHRC5OII 9072378 BLANK OC KSH3IIM P3-210 5.825-07 5.745-07 UCI/SA 51%9.185-07 9072376 LCS K8H3IIAC P3-210 1.235-05 2.64E-06 UCIISA 51% 137%0.4 9.50E-07 RICI1RC5005 9072377 BLANK OC K8H341M RA-226 1.605-08 5.23E-08 UCI/SA 98%1.015-07 9072377 ICS K8H341AC RA-226 .135-05 2.385-06 UCI/SA 98% 112%0.1 1.555-07 No of Results 22 TestAmerica Bias ResultlExpeeted-l as defined by ANSL 13.30 rptSTLRchQcsum No tJj qualifier has been assigned and the result is below the Reporting Limit RL CRDL or Report Value is Estimated mary V5 AZOfl Qua Analyzed for but not detected above limiting criteria Limit criteria is less than the Mdc/Mda or Total Uncert or not ideatified by gamma scan software TestAmerjca Laboratories Inc FIRST QUARTER RADIONUCLIDE EMISSIONS TEST CONDUCTED AT DENISON MINES CORPORATION NORTH YELLOW CAKE SCRUBBER BLANDING UTAH March 18-19 2009 by TETCO 391 East 620 South American Fork UT 84003 Phone 801 492-9106 Fax 801 492-9107 fax Prepared for Denison Mines Corporation 6425 Hwy 91 Blanding Utah 84511 Date of Report June 11 2009 TABLE IV NYC scrubber COMPLETE RESULTS DENISON MiNES CORPORATION BLANDING UTAH NORTH YELLOWCAKE SCRUBBER EXHAUST Symbol Description Dimensions Run Run Date 3/18/09 3119/09 Filter 5234 5235/523 Begin Time Test Began 834 746 End TimeTeetEnded 1955 1801 Pb Meter Barometric Pressere Ia Hg Abs 24.60 24.55 AH Orifice Pressure Drop In 140 0.603 0.521 Meter Calibration Factor dimensionless .000 .000 Vm Volume Gsa Sampled-Meter Conditions ef 259.051 238.359 T1 Avg MeterTemperature 91.8 95.3 lAP Sq Root Velocity Heed Root In 140 0.2200 0.2153 WL WeightWaterColteeted Grams 1876.0 1641.7 1s Duration of Test Missiles 480 480 C2 Pitet Tube Coefficient Dimeeaiealees 0.84 0.84 D5 Nozzle Diameter Inches 0.3800 0.3 800 CO Volume%Carbon Dioxide Percent 3.50 3.80 Volume%Oxygen Percent 14.70 14.60 N-CO Volume Nitrogen end Carbon Monoxide Ferceut 81 .80 81 .60 Vm5Sd Volume Gas Sampled Standard dacf 204.171 186.254 Vw Volume Water Vapor scf 88.453 77.406 Bwa inamured Fraction HO Ic Sleek Gas Mcsaered Fraction 0.302 0.294 Fraction H20 in Stack Gae Saturated Fraction 02 14 0.23 Bw Fraction 1-10 in Stack Gsa Frection 0.214 0.238 Xd Fraction of Dry Gaa Fraction 0.786 0.762 Md MaleculsrWt Dry Gas tb/tbraol 29.15 29.19 M0 MoleeulerWt Stack Gas IbIthmol 26.76 26.53 Vol Percent Isokinctic Percent 104.8 100.7 AVG T5 AvgStsckTemperature 135.7 139.6 137.7 A0 Sleek Crosa Seetiosal Area Sq Ft .767 .767 Pr-j Sleek Static Pressure In 1120 -0.040 -0.040 Pb2 Sample Post Barometric Pressure In Hg Aba 24.53 24.48 P5 Stack Preaaem In 1-1g Aba 24.527 24.477 Q5 Sleek Gas Volumetric Flow Rate Std deelIn 9.11 E02 8.65E02 8.88E02 Qa Stack Gas Volumetric Flow Rate Actual olin .60E03 .58E03 1.59E03 VelooityofStackGaa 1km 9.03E02 8.91E02 8.97E02 Curies Radionocliden per sample pCi 121E04 8.424E03 Crad Coecentralion of Redionuelidea pCi/dad 5.491 E0 4.523E0 5.007E01 ERrad Emiaaior Rate of Radionuclidee pCi/hr 3.00 E06 2.347E06 2.674E06 If the measured moisture eorttent is greater than the saturated moisture level supersaturated the saturated moisture value will be used in all calculations 40 CFR 60 Method Section 12.1.7 Sample Results Summary Date 10-Jun-09 TestAmerica Ordered by Method Batch No Ctient Sample ID Report No 41714 SDG No 39320 Client Id Tracer MDC or Batch Work Order Parameter Result Uncertainty 2s Quat Units Yield MDA CROL RER2 9139421 E293 RI 5234 K883J2AC U-234 5.65E-O3 1.03E-03 UCI1SA 101%3.756-05 U-235 1.89E-04 7.96E-O5 UCI/SA 101%2.836-05 U-238 5.36E-03 1-9.836-04 UCI/SA 101%3.976-05 R2 5235 5236 K883K2AC U-234 4.07E-03 8076-04 UCI/SA 97%5.396-05 U-235 1.446-04 7.69E-05 UCI/SA 97%4.15E-05 U-38 4.206-03 8.286-04 UCJ/SA 97%3.66E-05 9090369 RICHCRSOII RI 5234 K883J1M TH-228 1.726-08 1.396-08 UCI/SA 97%1.586-08 111-230 0.606-08 LYE-OS UC1/SA 97%ABE-OS 3006-15 111-232 8.05E-09 9.076-09 UCI/SA 97%ABE-OS R2 5235 5236 K883K1M T-I-228 7.12E-09 9.57E-09 UCI/SA 88%1.75E-08 TH-230 4.016-06 6.66E-07 UCJ/SA 88%1.64E-08 3.OOE-I5 TH-232 2.686-08 1.66E-08 IJCI/SA 88%1.646-06 9090365 R1CHRC5QII RI 5234 K8S3JIAE PB-2l0 6476-06 1.51E-06 UCI/SA 58%1.02E-06 6.006-14 R2 5235 5236 K883K1AE PB-21O 5.54E-06 .376-06 UCI/SA 51%1.08E-08 60OE-14 9090367 RICHRC500S RI 5234 K883J1AD RA-226 2.97E-07 l.30E-07 UCI/SA 95%1.50E-07 9.OOE-14 R2 5235 5236 K883KIAD RA-226 1.826-07 1--1016-07 UCI/SA 93%1.26E-07 9.OOE-14 Mo of Results 18 Lp7r-O TestAmerica RER2 -Replicate Error Ratio S-fl/sqrtsqfFPUs-l-sqFPUti1 as defined by ICPT BOA rptSlLRchsasum Quel Analyzed for but not detected above limiting criteria Limit erLterla Is less than the MdcfMde or Total Uneert or not identified by mary2 V5.2.3 gamma scan software A2002 TestAmerica Laboratories Inc QC Results Summary Date 10-Jun-09 TestAmerica Ordered by Method Batch No QC Type Report No 41714 500 No 39320 Batch Tracer LOS Work Order Parameter Result Uncertainty 25 Qual Units Yield Recovery Bias MDCIMDA E2S5 9139421 BLANK GIG LDCLTIM U-234 4.88E-06 i--1.83E-05 Li UCI/SA 102%4.76E-05 U-235 -1.22E-06 124E-05 UCI/SA 102%2.92E-05 1.1-238 925E-06 I--2.21 E-05 UC1/SA 102%501E-05 9139421 LOS LDCLTIAC U-234 4.54E-04 1.39E-04 UCI/SA 93%105%0.1 7.79E-05 U-235 1.81 E-05 3.04E-05 UCI/SA 93%92%-0.1 0.23E-05 1.1-238 4.51 E-04 1.38E-04 UCIISA 93% 100%0.0 6.43E-05 RICHCR5QII 9090369 BLANK OC K9DGIIM TH-228 2.98E-13 6.28E-09 UCI/SA 88%1.63E-08 TH-230 5.01 E-08 227E-08 UC1/SA 88%.53E-OB TH-232 4.17E-09 725E-09 UCIISA 88%1.53E-08 9090369 LCS K9DGIIAC TF-1-230 2.74E-06 4.80E-07 UCI/SA 67% 107%0.1 217E-08 RICHRCSOII 9090365 BLANK GO K9DGQIM P0-210 6.46E-07 4-6.06E-07 UCI/SA 44%9.62E-07 9090365 LOS K9DGQIAC P0-210 .38E-05 2.98E-06 UCI/SA 41%137%0.4 27E-06 RICHRCEOO5 9090367 BLANK GO K9DGVIAA RA-226 -490E-09 6.24E-08 UCI/SA 96%.25E-07 9090367 LOS K9DOVIAC RA-226 1.03E-05 2.27E-06 UC1/SA 95% 92%-0.1 9.74E-08 No of Results 14 TostAmerica Bias ResuitlExpected-1 as deliried by ANSI 1330 rptsTLRchQcSum No qualilier has bee 4ueIgned and the result Is below the Reporting Limit CRUL or Report %nlue Is Esthnated mary V5.2.3 A2002 Quat Analyzed for but not detected above hlinithig criteria Limit criteria is less thai the Mdc/Mda or Total Uneert or not identified by gamma scan software TestAmerica Laboratories Inc 10 LJ LJ LL a LU LJ L J L J L3 CJ LJ LJ UJ LJ Jr 4e e Z 1C z L- l _ t _ o CD Ch a i n at Cu s t o d y Re c o r d Th L 4 1 2 4 la O f l Te m p e r a t u r e on Re c e i p t Or h i k i n g Wa t e r Ye s No Te s t A m e r i c a TH E LE A D E R IN EN W R O N M E N T A L TE S T I N G ble n t Pin fe a t Ma n a g e r Da r e Ch a i n of Cu s t o d r N c e n b e r T/ o / E 2 e n / a r 44 -_ - 41 / . L 11 2 7 2 4 as Te l e p i o n e Nw e b e r A r a a Co f r F i m Nu m b e r La b Ms n b fl o Jt Y I VT Z 7 f a t Pa n e of ti p Ba s e zip Co d e Sfr e CO O I S a Co n i s a An a l y s i s Att e c f t lis t if me n a s p a c e i s n e e d e d J/ r . . e L . . n 4 t e Pm j e d Na m e an d Lo c a t i o n Sla t e Ca r d e r . t W a y b l i Nu m b e r fl t ta Z4 11 J t c 4 j4 r fo y J 17 J 4 9 av B I Co n t r a c W w v h a a e O z d a o D u o t e tj p a MB t i Pte s e i v a t i v s Sp e c i a l I n a b u c t i o n e f Co n d i t i o n s of Ra c e jp t Sa o w l e 1. 0 No an d De s c n p t i o n ala n re s c h a s m p i e m a y b e co m b i n e d o n on e lin e Da t e mn e /Y 2 V A/ 4 e j s / e t t . /f l iI I I I I I I I I I I I I I k U I I I I Ia /- 0 I c /4 1 s 0 / r Ae % t /d c .M r tk f 6r n I e e A - c f r 5 L0 d 22 Ti l l 11 1 1 1 Po s s i b l e Hh r a r d l d e n l i u i c a l i o n ia t i v eD a t fe e ma y b e as s ea s e d Ii sa m p l e s am ra t e / n e d No n - H a s a r d fl a m m a b l e Sb l n lo l l a n t Po i s o n S Un / m o a n Ra b i n To ClI e n t 14 Dls p o e a l B y L e b Ar a f f l i m Fo r Mo t i f he bz g r / m p mo n t h Tu r n A r o u n d Tim e Ra q t e d QC Ru f r e i i l it s Sp e c i f y 24 Flo w s 04 8 Ho u m TD a y s 14 Da y s 02 1 Da y s ao t n e r Re l D i q u i s h e d By Da t e Tim e Re c e I v e d a y Da t e re n a /7 4 6 e _ 1s A . c 2 f r qr a p 90 0 Re l i n q u i s h Ł B y Da l e Tim e Ra c e Oa k lI m e i. x . w O3 J 7 O 7 IO 7 s o Re l i n q u l s h e e Sa t e Tim e Re c e e v d B y Da t e nin e Co m m e n t s /- c 7 c o - i F Qf n 4 r c . / nL e r n i m r J t I n A n Oa h m a H t f l U ad h f l n n - VY f l h i t . . _ . . nI w u s r - o m y s v n e r n e e s n w l e fl i e r - n e r o uo p y lestAmeta THE LEADER IN ENVIR0WMENTAt TESTING Sample Check-in fAst Date/Time Received 02 07 oflo GM Screen Results iL 1AMt444t77LCLt4 SDG 39320 NA SAF NAf WorkOrderNumber jC7Q I7 Chain of Custody //2 Shipping Container ID__________________Air Bill ___________________________________ Custody Seals on shipping container intact Yes No Custody Seals dated and signed Yes No Chain of Custody record present Yes No Cooler temperature NA 5.Vermiculite/pacldng materials is NA Wet Dry Number of aamples in shipping container Sample holding times exceeded NA Yes No frY Samples have tape hazard labels custody seals 7appropriate samples labels Samples are ._Li good condition leaking broken have air bubbles Only for samples requiring head space 10 Sample pH taken NA pH2 p112 p119 Amount of 11N03 Added___________ 11 Sample Location Sample Collector Listed Yes No43 5/J_ For documentation only No corrective action needed 12 Were any anomalies identified in sample receipt Yes No 13 Description of anomalies include sample numbers ___________________________________ Sample Custodian Date ad ThIent Sample ID Analysis Regacsted Condition Comments/Action Client Informed on by______________________Person contacted No action necesary process as is Project Manager_____________________________________Data LS023 Rev 3/09 TestAmerica Laboratories Inc 18 SECOND QUARTER RADIONUCLIDE EMISSIONS TEST CONDUCTED AT DENISON MINES CORPORATION NORTH YELLOW CAKE SCRUBBER YELLOW CAKE DRYER BAGHOUSE GRIZZLY BAGHOUSE BLANDING UTAH May 19-21 2009 by TETCO 391 East 620 South American Fork UT 84003 Phone 801 492-9106 Fax 801 492-9107 fax Prepared for Denison Mines Corporation 6425 Hwy9l Blanding Utah 84511 Date of Report August 2009 NYC Scrubber TABLE IV COMPLETE RESULTS DENISON MINES CORPORATION BLANDING UTAH NORTH YELLOWCAKE SCRUBBER EXHAUST Symbol Description Dimensions Run Run Date 5/19/09 5/20/09 Filter 5286/5287 5288/5290 Begin Time Test Began 955 812 End Time Teat Ended 1922 1639 Pbm Meter Barometric Pressure In Hg Abs 24.50 24.45 AH Orifice Pressure Drop In H20 0.997 0.609 Meter Calibration Factor dimensionless .006 .006 Vm Volume Gas sampled--Meter Conditions cf 263.918 237.989 T0 Avg Meter Temperature 90.4 88.2 JAP Sq Root Velocity Head Root tn H50 0.2298 0.2951 Wcc Weiglst Water Collected Grains 796.6 821.9 Dumtion of Test Minutes 421 480 Pitot Tube Coefficient Dimensionless 0.84 0.84 Dn Nozzle Diameter Inches 0.3915 0.3050 CO2 Volume%Carbon Dioxide Percent 3.30 3.60 02 Volume Oxygen Percent 14.60 14.70 N2 CO Volume Nitrogen and Csrbon Monoxide Percent 82 10 .70 Vmd Volume Gas Sampled Standard dscf 209.183 188.783 Vw VolumeWaterVspor scf 37.560 38.753 Bw5 measured Fraction 1120 in Stack Gas Measured Fmction 52 170 Bw saturated Fraction 1120 in Stack Gas Saturated Fraction 102 10 Bw5 Fraction 1420 in Stack Gss Fraction 02 101 Xd Fraction of Dry Gas Fraction 0.898 0.899 Md MoleculsrWt Dry Gas Ib/Ibmol 29.11 29.16 M5 Molecular Wt Stack Gas lb/Ibmol 27.97 28.04 %I Percent lsokinctic Percent 96.7 98.2 AVG T5 AvgStackTempemture 108.7 108.2 108.5 A5 Stack Cross Sectional Ares Sq Ft .767 .767 Stack Static Pressure In HO -0.050 -0.050 Pb Sample Port Barometric Pressure In Hg Abs 24.43 24.38 P5 Stack Pressure In Hg Abs 24.426 24.376 Q5 Stack Gas Volumetric Flow Rate Std dscfin .09E03 .39E03 1.24E03 Q5 Stack Gas Volumetric Flow Rate Actual cfin .60E03 2.05E03 1.82E03 V5 Velocity of Stack Gsa 1km 9.03 E02 1.1 6E03 .03E03 Curies Rsdionuclides per sample pCi 2.667E03 4.954E03 Crad Concentration of Radionuclides pCi/dscf .275E0 2.624E0 .949E01 ERrad EmimionRsteofRsdionuclides pCi/br 8.307E05 2.195E06 1.513E06 If the measured moisture content is greater than the saturated moisture level supersaturated the saturated moisture value will be used in all calculations 40 CFR 60 Method Section 12.1.7 Dryer Baghouse TABLE COMPLETE RESULTS PM DENISON MINES CORPORATION YELLOW CAKE DRYER BAGITIOUSE Symbol Description Dimensions Run Date Date 5/20/09 Filter 5289 Begin Time Test Began 1721 End Time Test Ended 1912 Pbm Meter Barometric Pressure tn Hg Abs 24.45 AH Orifice Pressure Drop In H20 .763 Meter Calibration Factor dimensionless .006 Vm Volume Gas sampled--Meter Conditions ef 88.339 Tm Avg Meter Temperature 85.7 JAP sq Root Velocity Head Root In H20 0.5 866 We Weight Water Collected Grams 11 .6 Duration of Test Minutes 05 Pitot Tube Coefficient Dimensionless 0.84 Dn Nozzle Diameter Inches 0.2765 CO2 Volume Carbon Dioxide Percent 0.00 02 Volume Oxygen Percent 20.90 N2 CO Volume Nitrogen and Carbon Monoxide Percent 79.1 Vmd Volume Gas sampled 5tandard dsef 70.639 Vw Volume Water Vapor sef 0.547 Bwa Fraction H20 in Stack Gas Fraction 0.008 Xd Fraction of Dry Gas Fmetion 0.992 Md Molecular Wt Dry Gas Ib/ibmol 28.84 M5 Molecular Wt Stack Gas Ib/lbmol 28.75 %I Percent lsokinetie Percent 95 T5 Avg Stack Temperature 116.2 A5 Stack Cross Sectional Area Sq Ft 1.396 Stack Static Pressure In H20 0.21 Pb0 Sample Port Barometric Pressure In Hg Abs 24.38 Stack Pressure In Hg Abs 24.365 Q5 Stack Gas Volumetric Flow Rate Std dsefin 2.37E03 Qa Stack Gas Volumetric Flow Rate Actual eli 3.20E03 V5 Velocity of Stack Gas lm 2.29E03 Caries Radionuelidea per sample pCi .143 E03 Crad Concentration of Radionuclides pCi/dsef 1.61 8E01 ERrad Emission Rate of Radionuelides pCi/hr 2.300E06 Grizzly TABLE VI COMPLETE RESULTS PM DENISON MINES CORPORATION GRIZZLY BAGHOUSE Symbol Description Dimensions Run Date Date 5/21/09 Filter 5291 Begin Time Teat Began 845 End Time Test Ended 1051 Pbm Meter Barometric Pressure In Hg Abs 24.45 AH Orifice Pressure Drop In H20 .024 Meter Calibration Factor dimensionless .006 Vm Volume Gas Sampled--Meter Conditions cf 78.611 Tm Avg Meter Temperature 87.7 lAP Sq Root Velocity Head Root In 110 1671 Wcc Weight Water Collected Grams 12.5 Duration of Test Minutes 120 Pitot Tube Coefficient Dimensionless 0.84 Dn Nozzle Diameter Inches 0.4405 CO2 Volume Carbon Dioxide Percent 0.00 02 Volume Oxygen Percent 20.90 N2 CO Volume Nitrogen and Carbon Monoxide Percent 79 10 Vm5d Volume Gas Sampled Standard dscf 62.492 Vw Volume Water Vapor acf 0.5 89 Bw Fraction H20 in Stack Gas Fraction 0.009 Xd Fraction of Dry Gas Fraction 0.991 Md Molecular Wt Dry Gas Ib/Ibmol 28.84 M5 Molecular Wt Stack Gas Ib/Ibmol 28.73 %I Percent Isokinetic Percent 99.4 T5 Avg Stack Temperature 89.5 A5 Stack Cross Sectional Area Sq Ft .9 P0 Stack Static Pressure In 110 -0.02 Pb Sample Port Barometric Pressure In Hg Abs 24.42 P5 Stack Pressure In Hg Aba 24.419 Q5 Stack Gas Volumetric Flow Rate Std dacfiss 9.49E02 Qa Stack Gas Volumetric Flow Rate Actual cfin .22E03 V5 Velocity of Stack Gas 1km 6.37E02 Curies Radionuclidea per sample pCi 7.320E-0 Crad Concentration of Radionuclides pCi/dscf .171 E02 ERrad Emission Rate of Radionuclides pCi/hr 6.669E02 Sample Results Summary Date 30-Jul-09 TestAmerica Ordered by Method Batch No Client Sample ID Report No 42055 SDG No 39849 Client Id Tracer MDC or Batch Work Order Parameter Result Uncertainty 2s Qual Units Yield MDA CRDL RER2 9161567 E2SS RI 5286 5287 FILTERS AND BEAKE LEAK5IAC U-234 1.29E-03 2.77E-04 UCI/SA 95%5.59E-05 9.OOE-15 11-235 7.1OE-05 4.34E-05 UCI/SA 95%288E-05 9.OOE-15 11-238 l.30E-03 2.78E-04 UCI/SA 95%494E-05 9.OOE-15 RI 5291 FILTER AND BEAKERS LEF-IJMIAC U-234 l.OIE-05 2.67E-05 UCI/SA 97%6.25E-05 9.OOE-15 11-235 -1 .26E-06 40E-05 UCI/SA 97%492E-05 9.OOE-1 U-238 .26E-05 2.65E-05 UCI/SA 97%5.85E-05 9.OOE-15 R2 5288 5290 FILTERS AND BEAKE LEHH91AC U-234 2.42E-03 4-4.73E-04 UCI/SA 93%3.0SF-OS 9.OOE-15 U-235 .27E-04 6.13E-05 UCI/SA 93%3.08E-05 9.OOE-15 U-238 2.40E-03 4.70E-04 UCI/SA 93%3.oaE-os 9.OOE-15 919616a t258 RI 5289 FILTER AND BEAKERS LEFIJK2AC U-234 5.31E-04 1.41E-04 UCI/SA 100%4.99E-05 9.OOE-15 U-235 2.90E-05 2.BIE-05 UCI/SA 100%3.83E-05 9.OOE-15 U-238 6.03E-04 1.54E-04 UCI/SA 100%4.99E-05 9.OOE-15 9161565 RICHCR5OII RI 5286 5287 FILTERS AND BEAKE LEAK5IAA TH-228 2.67E-09 4--9.25E-09 UCI/SA 55%1.96E-08 3.OOE-15 TH-230 2.19E-06 i--3.88E-07 UCJ/SA 55%1.85E-08 3.OOE-15 TH-232 2.52E-09 1--8.74E-09 UCI/SA 55%1.8SF-OS 3.OOE-15 RI 5289 FILTER AND BEAKERS LEHJKIM TH-228 1.03E-08 1.17E-08 UCI/SA 57%1.90E-08 3.OOE-15 TH-230 8.20E-06 1.37E-06 UCI/SA 57%I.80E-08 3.OOE-15 TH-232 1.96E-08 1.50E-08 UCI/SA 57%1.80E-08 3.OOE-15 RI 5291 FILTER AND BEAKERS LEHJMIM TH-228 2.43E-09 1.29E-08 UCI/SA 61%2.61E-08 3.OOE-15 TH-230 4.IIE-07 9.1OE-08 UCI/SA 61%1.69E-08 3.OOE-15 TH-232 6.89E-09 9.26E-09 UCI/SA 61%1.69E-08 3.OOE-15 R2 5288 5290 FILTERS AND BEAKE LEHH91M TH-228 1.03E-08 9.88E-09 UCI/SA 90%127E-08 3.OOE-15 TH-230 .92E-06 4-3.26E-07 UCI/SA 90%.20E-08 3.OOE-1 TH-232 8.14E-09 8.08E-09 UCI/SA 90%1.20E-08 3.OOE-15 9161563 RICH RCSOI TestAmerica ItER2 Replicate Error Rntlo S-DffsqrtsqTPUssqTPtJdfl as defined by ICPT BOA rptSTLRctiSasuni Ii Qual Analyzed for but not detected above llintting criteria Limit criteria is less than the MdMdn or Total thicert or not identified by mary2 V5.2.3 scan software A2002 TestAmerica Laboratories Inc Sample Results Summary Date 30-Jul-09 TestAmerica Ordered by Method Batch No Client Sample ID Report No 42055 SDG No 39849 client Id Tracer MDC or Batch Work Order Parameter Result ncertainty 2s Qual Units Yield MDA CRDL RER2 9161563 R1CURC5OII RI 5286 5287 FILTERS AND BEAKE LEAKS1AE P8-210 3.32E-06 7.98E-07 UCI/SA 77%5.96E-07 6.OOE-14 RI 5289 FILTER AND BEAKERS LEHJKIAE P8-210 5.73E-07 3.39E-07 UCI/SA 70%5.05B07 6.OOE-14 Ri 5291 FILTER AND BEAKERS LEHJM1AE P8-210 6.13E-07 4.23E-07 UCI/SA 63%6.51E-07 6.OOE-14 R2 5288 5290 FILTERS AND BEAKE LEHH9IAE P8-210 4.64E-06 1.07E-06 UCI/SA 67%6.63E-07 600E-14 9161564 RICHRC5005 RI 5286 5287 FILTERS AND BEAKE LEAK51AD RA-226 2.14E-07 1.29E-07 UCI/SA 86%1.64E-07 9.00E-14 Ri 5289 FILTER AND BEAKERS LEHJK1AD RA-226 5.76E-08 9.73E-08 UCJISA 88%1.71E-07 9.OOE-14 Ri 5291 FILTER AND BEAKERS LEHJMIAD RA-226 3.21E-07 1.45E-07 .IJCI/SA 91%1.56E-07 9.OOE-14 R2 5268 5290 FILTERS AND BEAKE LEHH9IAD RA-226 139E-07 1.17E-07 UCIISA 89%177E-07 9.OOE-14 No of Results 32 r-/r .2k Ct flerWi2cA //q2L7 5- TestAmerice RER2 Replicate Error Ratio S.D/sqrtsqTPUssqTPUd as deFined by ICPT BOA rptSlLRchSaSum Quai Analyzed for hut not detected above limiting criteria Limit criteria is less than tue Mde/Mda or rotai Uncert or not identified by mary2 V5.2.3 gamma scan software A2002 TestAmerica Laboratories Inc QC Results Summary Date 30-Jul-09 TestAmerica Ordered by Method Batch No QC Type Report No 42055 Batch Tracer LCS Work Order Parameter Result Uncertainty 2$Qua Units Yield Recovery Bias MOCIMDA E2SS SDG No 39849 9161567 BLANK OC LENM9IAA U-234 U-235 U-238 9161567 LCS LENM91AC U-234 U-235 U-238 E2SS 9196168 BLANK 00 LGHG5IM IJ-234 U-235 U-238 9196165 LOS LGHG51AC U-234 U-235 U-238 RICHCR5OII 9161565 LOS LENMSI AC RICHRC5OII 9161563 LOS LEN MTI AC RICHRC500S 9161564 LCS LENMOIAC No of Results -1 .32E-08 2.86E-08 UCI/SA 91%8.65E-08 -8.80E-09 1.57E-08 UCI/SA 91%8.12E-08 7.91E-09 3.48E-08 UCI/SA 91%8.51 E-08 3.28E-06 7.78E-07 ucI/SA 92%101%0.0 8.26E-08 1.41 E-07 6.88E-08 UCI/SA 92% 95%0.0 3.70E-08 3.50E-08 -i--8.26E-07 UCI/SA 92%103%0.0 5.37E-08 6.OOE-09 2.89E-08 UCI/SA 104%7.20E-08 2.40E-09 1.83E-08 UCI/SA 104%5.15E-08 2.04E-08 3.09E-O8 UCI/SA 104%6.12E-08 2.99E-06 7.47E-07 UCI/SA 4.99E-08 1.13E-07 5.92E-08 UCI/SA 3.43E-08 3.35E-06 -8.31E-07 UCI/SA 4.47E-08 TH-230 2.39E-06 i--3.97E-07 UCI/SA 89% 104%0.0 1.27E-08 PB-210 1.23E-05 -2.55E-06 UCI/SA 73% 137%0.4 5.90E-07 RA-228 .15E-05 -i--2.47E-06 UC1/SA 88%114%0.1 2.06E-07 99% 99% 99% 91% 75% 97% -0.1 -0.2 0.0 15 TostAmerica Bias Resuit/Expected-I as defined by ANSI N13.30 rptsTLRchQcsum Qusi Analyzed ror but not detected above limiting criteria Limit criteria is less than tue Mtic/Ntda or Total Uncert or not identified by mary v5.2.3 A2002 gamma scan software TestAmerica Laboratories Inc Attachment ni rn to tn -S ni n i n i I_ s tO oo Cr i- p i- p Di Cr -D CD CD CD i- P i- P Di CD CD 10 / 1 / 1 9 8 6 10 / 1 / 1 9 8 7 10 / 1 / 1 9 8 8 10 / 1 / 1 9 8 9 10 / 1 / 1 9 9 0 10 / 1 / 1 9 9 1 10 / 1 / 1 9 9 2 10 / 1 / 1 9 9 3 10 / 1 / 1 9 9 4 10 / 1 / 1 9 9 5 10 / 1 / 1 9 9 6 10 / 1 / 1 9 9 7 10 / 1 / 1 9 9 8 10 / 1 / 1 9 9 9 10 / 1 / 2 0 0 0 10 / 1 / 2 0 0 1 10 / 1 / 2 0 0 2 10 / 1 / 2 0 0 3 10 / 1 / 2 0 0 4 10 / 1 / 2 0 0 5 10 / 1 / 2 0 0 6 10 / 1 / 2 0 0 7 10 / 1 / 1 9 8 6 10 / 1 / 1 9 8 7 10 / 1 / 1 9 8 8 10 / 1 / 1 9 8 9 10 / 1 / 1 9 9 0 10 / 1 / 1 9 9 1 10 / 1 / 1 9 9 2 10 / 1 / 1 9 9 3 10 / 1 / 1 9 9 4 10 / 1 / 1 9 9 5 10 / 1 / 1 9 9 6 10 / 1 / 1 9 9 7 10 / 1 / 1 9 9 8 10 / 1 / 1 9 9 9 10 / 1 / 2 0 0 0 10 / 1 / 2 0 0 1 10 / 1 / 2 0 0 2 10 / 1 / 2 0 0 3 10 / 1 / 2 0 0 4 10 / 1 / 2 0 0 5 10 / 1 / 2 0 0 6 NJ N J NJ CAJ g--ENERO YLASORA TORIES INC 2393 Sail Creek Hiqhway 82501 20 Box 3258 Caspei WY82502LWAflTellFree 888.235.0515 3072T 15 Far 307234.1539 casperiwenergy/eb.coir viveaergylab.com t45ORA71OI/ESi ANALYTICAL SUMMARY REPORT March 25 2009 Denison Mines USA Corp 6425 Hwy 191 Blanding UT 84511 Workorder No C09030647 Project Name Surface Water Cottonwood Creek Energy Laboratories Inc received the following sample for Denison Mines USA Corp on 3/20/2009 for analysis Sample ID Client Sample ID Collect Date Receive Date Matrix Test C09030647-001 Cottcnwood Creek 03/18/09 1345 03/20/09 Aqueous Solids Total Dissolved Solids Total Suspended As appropriate any exceptions or problems with the analyses are noted in the Laboratory Analytical Report the QNQC Summary Report or the Case Narrative If you have any questions regarding these tests results please call Report Approved By 34\x\LQ L1id2of ENERO YLABORA TORIES INC 2393 Sail CreekHqhway 82601 P0 Box 3251 Caspe WY 82602 ____________Toil Free 888.235 0515 307.2X 15 Far 307234.1639 casperenergylab.con nv.energylaf.i corn jzZA flORA 7O/IES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 03/25/09 Project Surface Water Cottonwood Creek Collection Date 03/18/09 1345 Lab ID C09030647-O01 DateReceived 03/20/09 Client Sample ID Cottonwood Creek Matrix Aqueous MCIJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By PHYSICAL PROPERTIES Solids Total Dissolved TDS 180 423 mg/L 10 P2540 03/23/09 1235 dd Solids Total Suspended TSS 105 20 mg/L P2540 03/23/09 0905 dd Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit Qualifiers RL Analyte reporting limit Lc4SORA TORIES ENERGYLABORA TORIES PC 2393 Sail Creek Hi.qhway To/I Free 888.2350516 307.25 15 Fax 307234.1639 82601 P0 Box 325 Caspei WY82602 casperGenergyIab.con wwenergy/ab.com QNSummaRepo Client Denison Mines USA Corp Project Surface Water Cottonwood Creek Report Date 03/25/09 Work Order C09030647 AnalYte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method A2540 Batch 090323_1SLDS-TDS-W Sample ID LCSI_090323 Laboratory Control Sample Solids Total Dissolved TDS 180 992 mg/L 10 Run BAL-1_090323B 03/23/09 1228 99 90 110 Sample ID MBLKI_090323 Method Blank Solids Total Dissolved TDS 180 ND mg/L Run BAL-1_090323B 03/23/09 1229 Sample ID C09030629-OOBAMS Sample Matrix Spike Solids Total Dissolved TDS @18CC 2310 mg/L 10 Run BAL-1_090323B 03/23/09 1234 99 90 110 Sample ID C09030629-OO8AMSD Sample Matrix Spike Duplicate Solids Total Dissolved TDS 180 2360 mg/L 10 Run BAL-1_090323B 03/23/09 1234 102 90 110 2.1 10 Method A2540 Batch 090323A-SLDS-TSS-W Sample ID C09030666-OO2ADUP Sample Duplicate Solids Total Suspended TSS 105 4.00 mg/L 1.0 Run BAL-1_090323A 03/23/09 0908 25 Sample ID MBLK2_090323A Method Blank Solids Total Suspended TSS 105 ND mg/L 0.7 Run BAL-1_090323A 03/23/09 0909 ND Not detected at the reporting limit LA S o i T O R l E 5 1 Ch a i n of Cu s t o d y an d An a l y t i c S Re q u e s t Re c o r d Pa g e of PL E A S E PR I N T - Pr o v i d e a s mu c h in f o r m a t i o n as po s s i b l e Co m p a n y Na m e Ec n 5 o r \ Mt 5 Pr o j e c t Na m e PW S Pe r m i t Et c 3. . c . \s c c c r C- o h n v t e c \ c. r c c X Sa m p l e Or i g i n St a t e EP N S t a t e Co m p l i a n c e Ye s No Re p o r t Ma i l Ad d r e s s ts r 1 In v o i c e Ad d r e s s Co n t a c t Na m e Ph o n e / F a x Em a i l rR r D6 . . \ p c C t3 c. 7 5 In v o i c e Co n t a c t Ph o n e Pu r c h a s e Or d e r Sa m p l e r Pl e a s e Pr i n t c. n PJ m e r Qu o t e / B o f f l e Or d e r So n t c Dt r K 7g LU .0 to wi _ c o O -e W1 to LU Co I_ I - u MA T R I X Sp e c i a l Re p o r t / F o r m a t s EL I mu s t be no t i f i e d pr i o r to sa m p l e su b m i t t a l fo r th e fo l l o w i n g LI DW A2 L A GS A LI ED D I E D T E l e c t r o n i c Da t a LI PO T W / V V W T P Fo r m a t _ _ _ _ _ _ _ St a t e LE V E L IV Ot h e r NE L A C Co n t a c t E L I pr i o r to RU S H sa m p l e su b m i t t a l fo r ch a r g e s an d sc h e d u l i n g S e e In s t r u c t i o n Pa ge Sh i p p e d by c% Z 17 co o l e r ID s Co m m e n t s nip Re c e i 3 j e On l e No cu s t o d y se a t f l j Y Bo t t l e s i co o l e r s In t a c t Sig n a t u r e Ma t c h SA M P L E ID E N T I F I C A T I O N Na m e Lo c a t i o n In t e r v a l et c Co l l e c t i o n Da t e Co l l e c t i o n Ti m e cr s- i x iW ce s e Y __ _ 10 P_ _ _ _ _ Cu s t o d y Re c o r d MU S T Si g n e d Re l i n uis h e d by pr i n t Da t e / T i m e Si g n a t u i r Ul \ a a - 3- 1 1 - 2o o \ Re l i n q u i s h e d by iP n t Da t e / T i m e 8ig n e t t r e SJ be _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ke E K e d i p i f r i g 1u i i i m e ee d by pt Da t e / T i m e si g n a t u r e Sa m p l e Di s p o s a l Re t u r n to C l i e n t La b Dis p o s a l en ta b o r a o r y Da t e / T i m e sig n a t u r e c9 _ 9 2 2 ln ce r t a i n ci r c u m s t a n c e s s a m p l e s su b m i t t e d to En e r g y La b o r a t o r i e s I n c ma y be su b c o n t r a c t e d to ot h e r ce r t i f i e d la b o r a t o r i e s in or d e r to co m p l e t e th e an a l y s i s re q u e s t e d Th i s se r v e s a s no t i c e of th i s po s s i b i l i t y All su b - c o n t r a c t da t a wil l be cl e a r l y no t a t e d on yo u r an a l y t i c a l r e p o r t Vis i t ou r we b si t e at ww w . e n e r p y l a b . c o m fo r ad d i t i o n a l in f o r m a t i o n do w n l o a d a b l e fe e sc h e d u l e fo r m s an d li n k s Energy Laboratories Inc Ilo rko rd Rece Ii ec Ic list iiiiiit iiiiiiiooitouui Denison Mines USA Corp C09030647 Login completed by Kristina Ward Date and Time Received 3/20/2009 900 AM Reviewed by Received by pb Reviewed Date Carrier name Next Day Air Shipping container/cooler in good condition Yes No Not Present custody seals intact on shipping container/cooler Yes No Not Present custody seats intact on sample bottles Yes No Not Present chain of custody present Yes No fl chain of custody signed when relinquished and received Yes No chain of custody agrees with sample labels Yes No fl Samples in proper containerlbottle Yes No Sampleccntainers intact Yes No fl Sufficient sample volume for indicated test Yes No fl All samples received within holding time Yes No Li Container/Temp Blank temperature 29C On Ice Water-VOAvialshavezeroheadspace Yes fl No NoVOAvialssubmitted Water-pH acceptable upon receipt Yes I1 No NctApplicable contact and corrective Action comments None ENERG VLI4SORJ4 TORIES IPC 2393 Saft Creek Hi.qbway 82501 P0 5325 Caspe1 WY82502 ISMLtflS Toll Free 856235.0515 307.23 15 Fax 307234.1939 casperenergy1ab.cor/ wv.energyIaO.com CLIENT Denison Mines USA Corp Date 25-Mar-09 Project Surface Water Cottonwood Creek CASE NARRATIVE Sample Delivery Group C09030647 ORIGINAL SAMPLE SUBMITTALS All original sample submittals have been returned with the data package SAMPLE TEMPERATURE COMPLIANCE 4C 2C 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 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 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 days SOIL/SOLID SAMPLES All samples reported on an as received basis unless otherwise indicated ATRAZINE SIMAZINE AND PCB ANALYSIS USING EPA 505 Data for Atrazine and Simazine are reported from EPA 525.2 not from EPA 505 Data reported by ELI using EPA method 505 reflects the results for seven individual Aroclors When the results for all seven are ND not detected the sample meets EPA compliance criteria for PCB monitoring SUBCONTRACTING ANALYSIS Subcontracting of sample analyses to an outside laboratory may be required If so ENERGY LABORATORIES will utilize its branch laboratories or qualified contract laboratories for this service Any such laboratories will be indicated within the Laboratory Analytical Report BRANCH LABORATORY LOCATIONS eli-b Energy Laboratories Inc Billings MT eli-g Energy Laboratories Inc Gillette WY eU-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 FL-DOH NELAC E87641 California 02118CA Oregon WY200001 Utah 3072350515 Virginia 00057 Washington CI 903 ISO 17025 DISCLAIMER The results of this Analytical Report relate only to the items submitted for analysis ENERGY LABORATORIES INC CASPERWY 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 ELIs certification coverage by visiting www.energylab.com ELI appreciates the opportunity to provide you with this analytical service For additional information and services visit our web page www.energylab.com THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT White Mesa Mill Standard Operating Procedures Book 11 Environmental Protection Manual Section 2.1 Attachment Date 2/07 Revision DtJSA-1 Page of FIELD WATER ANALYSIS SURFACE WATER WHITE MESA MILL LOCATION Circle Canyon Other describe___________ DATE Icc2ddi pH BUFFER 7.0 BY 4tw Sampler/s initials pH BUFFER 4.0 SPECIFIC CONDUCTIVITY uMHOs STEAM DEPTH pH of WATER 3-1/1zuc4.s TEMP 1172 COND umhos COND j.tnihos pH Units TempC______ pH units Temp COND imhos pH units ____ Temp C___ COND pnihos pH units ____ TempC___ Comments /L 7L _cr -1fl4-4J i/fl o%/A j2a4 /Ad nL1-7LLr- J0tv__ July 20 2009 Denison Mines USA Corp 6425 Hwy 191 Blanding UT 84511 Workorder No C09060212 ANALYTICAL SUMMARY REPORT Project Name Semi-Annual Surface Water Sample ID Client Sample ID Collect Date Receive Date Matrix Test C09060212-001 Cottonwood 06/02/09 0735 06/04/09 Aqueous Sample Filtering Uranium Dissolved Uranium Suspended Digestion Total Metals Gross Alpha minus Rn222 and Uranium Radium 226 Dissolved Radium 226 Suspended Thorium Isotopic Thorium Suspended Isotopic Solids Total Dissolved Solids Total Suspended As appropriate any exceptions or problems with the analyses are noted in the Laboratory Analytical Report the QA/OC Summary Report or the Case Narrative If you have any questions regarding these tests results please call Report Approved By Ka ryn nire Report Proofing SpeciaCst fI1BO4TORIES ENERGVLABORA TORIES INC p2393 Sail Creak Hiqhway 82500.20 flax 3258 Casper WY82602 ____________Toll Fyaa 585.235.0515 235.0515 Fax 307234.153.9 casparganarg corn WWkE energy/at corn Energy Laboratories Inc received the following sample for Denison Mines USA Corp on 6/4/2009 for analysis ENERGYLASORA TO/WEB INC 2393 Salt CreekHigbway 82601 P0 Box 3258 Caspei WY82602 ____________Toll Free 888.2350515 235.05t5 Fax 307.234.1639 oaspenwenergf vm wwiv.energylab.oom 42T.8OR4tO8uffS2 LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denison Mines USA Corp Semi-Annual Surface Water 0090 60212-001 Cottonwood Report Date 07/20/09 Collection Date 06102/09 0735 DateReceived 06/04/09 Matrix Aqueous PHYSICAL PROPERTIES Solids Total Dissolved TDS 180 Solids Total Suspended TSS 105 446 mg/L 33 mg/L A2540 06/08/09 0905 emm A2540 06/04/09 1154 emm METALS DISSOLVED Uranium 0.0069 mg/L 0.0003 E200.8 06/09/092104 smi 0.9 0.4 0.4 -0.05 0.1 0.19 0.01 0.1 0.2 -0.05 0.07 0.1 0.03 0.1 0.2 pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/i pCi/L pCi/L pCi/L pCi/i pCi/L pCi/L E900.1 E900.1 E900 E903.0 E903.0 E903.0 E907.0 E907.0 E907.0 E903.0 E903.0 E903.0 E907.0 E907.0 E907.0 06/22/09 1214 cgr 06/22/09 1214 cgr 06/22/09 1214 cgr 06/15/09 2245 /jah 06/15/09 2245 /jah 06/15/09 2245 /jah 06/11/09 1345 /dmf 06/11/09 1345 dmt 06/11/09 1345/dmf 07/13/09 1842 trs 07/13/09 1842 trs 07/13/09 1842 trs 07/09/09 1346 dm1 07/09/09 1346 dmf 07/09/09 1346 dm1 Report RL Analyte reporting limit Definitions QCL Quality control limit MDC Minimum detectable concentration MCL Maximum contaminant level ND Not detected at the reporting limit Not detected at minimum detectable concentration MCi Analyses Result Units Qualifiers RL QCL Method Analysis Date By 10 ND mg/L 0.0003 E200.8 06/09/09 1749 sml METALS SUSPENDED Uranium RADIONUCLIDES DISSOLVED Gross Alpha minus Rn Li Gross Alpha minus Rn Precision Gross Alpha minus Rn MDC Radium 226 Radium 226 precision Radium 226 MDC Thorium 230 Thorium 230 precision Thorium 230 MDC RADIONUCLIDES SUSPENDED Radium 226 Radium 226 precision Radium 226 MDC Thorium 230 Thorium 230 precision Thorium 230 MDC EIVESGVLASORA rap/ES INC 2393 Sail Creek Heqhway 82501 RO Sex 3258 Casper WV82502 ___________Toil Free 888.2350515 235 0515 Fax 3072341639 casperenergf om www.energylab.com QA/OC Summary Report Client Denison Mines USA Corp Project Semi-Annual Surlace Water Report Date 07/20/09 Work Order C09060212 Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method A2540 Sample ID MBLKI_090608 Method Blank Solids Total Dissolved TDS 180 ND mgfL Batch 090608_1_SLDS-TDS-W Run BAL-1_090608B 06/08/09 0853 Sample ID LCSI_090608 Laboratory Control Sample Solids Total Dissolved TDS 1800 990 mgIL 10 99 Run BAL-1_090608B 06/08/09 0853 90 110 Sample ID C09060201-O14AMS Sample Matrix Spike Solids Total Dissolved TDS @1800 2540 mglL 10 101 Run BAL-1_090608B 06108/09 0903 90 110 Sample ID C09060201-OI4AMSD Sample Matrix Spike Duplicate Solids Total Dissolved TDS 180 2570 rng/L 10 103 Run BAL-1_090608B 08/08/09 0903 90 110 1.2 10 Method A2540 Batch 090604A-SLDS-TSS-W Sample ID MBLKL Method Blank Solids Total Suspended TSS 105 ND mg/L 0.7 Run BAL-1090604A 06/04109 1146 Sample ID LCSI_Laboratory Control Sample Solids Total Suspended ISS 1050 154 mg/L 4.0 77 Run BAL-1_090604A 06104/09 1503 60 110 Sample ID C09060127-OO8ADUP Sample Duplicate Solids Total Suspended TSS 1050 33.0 mgIL 4.0 Run BAL-1_090604A 06/04/09 1149 3.1 25 Method E200.8 Batch 22638 Sample ID MB-22638 Method Blank Uranium 0.0005 mg/L 7E-05 Run ICPMS4-C_090609A 06109/09 1737 Sample ID LCS2-22638 Laboratory Control Sample Uranium 0.107 mg/L 0.00030 107 Run ICPMS4-C_090609A 06/09/09 1741 85 115 Sample ID C09060212-OOIDMS Sample Matrix Spike Uranium 0.01 28 mgIL 0.00030 98 Run ICPMS4-C_090609A 06/09/09 1753 70 130 Sample ID C09060212-OOIDMSD Sample Matcix Spike Duplicate Uranium 0.01 29 mg/L 0.00030 99 Run ICPMS4-C_090609A 06/09/09 1814 70 130 20 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration ENERO VLABO/3A Top/ES INC -2393 Salt CreeRHiqhway 82501 Pa Box 3258 Casper WY82502 ____________Toll Fiec 888.235.0515 235.0515 Fax 3072341639 caspereaergj vm wmv.energylab.com VIcI.1tfAtK7fflfl QAIQC Summary Report Client Denison Mines USA Corp Project Semi-Annual Surface Water Report Date Work Order 07120/09 C09060212 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qua Method E200.8 Batch R119331 Sample ID LRB Method Blank Uranium ND mg/L 3E-05 Run ICPMS4 C_090609A 06/09/09 1201 Sample ID LFB Laboratory Fortified Blank Uranium 00502 mg/L 0.00030 100 Run ICPMS4-C090609A 85 115 06/09109 1205 Sample ID MB.22609 Method Blank Uranium ND mg/L 3E-05 Run ICPMS4-C_090609A 06/09/09 2100 Sample ID C09060212-00IBMS Sample Matrix Spike UranIum 0.0513 mg/L 0.00030 85 Run ICPMS4-C_090609A 70 130 06/09/09 2108 Sample ID C09060212-0OIBMSD Sample Matrix Spike Duplicate Uranium 0.0511 mgIL 0.00030 84 Run ICPMS4-C_090609A 70 130 0.5 06109/09 2112 20 Method E900.1 Batch GA-U243 Sample ID MB-GA-0243 Method Blank Gross Alpha minus Rn 0.8 pCi/L Gross Alpha minus Rn Precision 0.4 pCi/L Gross Alpha minus Rn MDC 0.4 pCi/L Run G5000W_090619A 06/22/09 1214 Sample ID LCS-CA-0243 Laboratory Control Sample Gross Alpha minus Rn 30.8 pCi/L 113 Run G5000W090619A 70 130 06/22/09 1214 Sample ID C09060300-OOIAMS Sample Matrix Spike Gross Alpha minus Rn 35.9 pCi/L 91 Run GS000W_090619A 70 130 06/22/09 1214 Sample ID C09060300-OOIAMSD Sample Matrix Spike Duplicate Gross Alpha minus Rn 33.2 pCi/L 81 Run GS000W090619A 70 130 7.7 06/22/09 1214 21.6 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration QNQC Summary Report Client Denison Mines USA Corp Report Date 07/20/09 Project Semi-Annual Surface Water Work Order C09060212 Method E903.0 Sample ID MB-2263S Radium 226 Radium 226 precision Radium 226 MDC -0.1 pCi/L 0.2 pCi/L 0.3 pCi/L uCi/kg uCi/kg uCi/kg 2E-07 IE-07 3E-07 Sample ID LCS-22846 Radium 226 Laboratory Control Sample .6E-05 uCi/kg Run BERTHOLD 770-1_090702B 106 70 130 07/13/09 1842 Sample ID C09060845-O0IAMS Sample Matrix Spike Run BERTHOLD 770-1_090702B 07/13109 1842 Radium 226 5.5E-05 uCi/kg 69 70 130 Spike response is outside of the acceptance range for this analysis Since the L3S and the RPD for the MS MSD pair are acceptable the response is considered to be matrix related The batch is approved Sample ID C09060845-OOIAMSD Sample Matrix Spike Duplicate Run BERTHOLD 770-1_090702B 07/13/09 1842 Radium 226 5.8E-05 uCi/kg 77 70 130 5.6 21.1 Sample ID MB-22869 Radium 226 Radium 226 precision Radium 226 MDC Method Blank -0.06 pCi/L 0.1 pCi/L 0.2 pCi/L Run BERTHOLD 770-1_090702B 07/13/09 2020 Sample ID LCS-22869 Radium 226 Laboratory Control Sample 11 pCi/L Run BERTHOLD 770-1_090702B 76 70 130 07/13/09 2020 Method E903.0 Sample ID C09060329-001 DMS Radium 226 Sample Matrix Spike 9.42 pCi/L Run BERTHOLD 770-2_090609B 118 70 130 Batch RA226-3736 06/16/09 0208 Sample ID C09060329-OOIDMSD Sample Matrix Spike Duplicate Run BERTHOLD 770-2_090609B Radium 226 6.63 pCi/L 83 70 130 35 The RPD for the MSO is high The individual spike recoveries are within range the MB Is acceptable and the LCS is within range therefore the batch Sample ID MB-RA226-3736 Method Blank Run BERTHOLD 770-2090609B Radium 226 -0.09 pCl/L Radium 226 precision 0.08 pCi/L Radium 226 MDC 0.2 pCi/L 06/16/09 0208 31.3 is approved 06/16/09 0208 Sample ID LCS-RA226-3736 Radium 226 Laboratory Control Sample 4.0 pCi/I Run BERTHOLD 770-20906098 105 70 130 06/16/09 0208 Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration Spike recovery outside of advisory limits ND Not detected at the reporting limit RPD exceeds advisory limit Not detected at minimum detectable concentration b.5O4TOR/ESf ENERO VLABORA TOP/ES INC p2393 .Sa//Creek Hiqhway 82601 P0 Sax 3258 Caspet /VY82602 ________To/I Free 888235.0515 235.0515 fax 3072341639 casper5energj 70111 www.energylab.com Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Batch Qual RI2OB1I Method Blank Run BERTHOLD 770-1_0907028 07/13/09 1842 Sample ID LCS-22638 Laboratory Control Sample Run BERTHOLD 770-1_090702B 07/13/09 1842 Radium 226 0.23 pCi/I 70 130 US Lcs response Is outside of the acceptance range for this analysis probably due to the analyst forgetting to spike the sample Since all other LCS5 in the batch the MS an the MSD are acceptable the batch is approved Sample ID MB-22846 Method Blank Run BERTHOLD 770-1_090702B 07/13/09 1842 Radium 226 Radium 226 precision Radium 226 MDC ENERGYLASORA TORIES INC -2393 Salt Creak H.qhway 82501 RO Box 3258 Caspe WY82502LZ.41S Toll Free 888.2350515- 235.0515 Fax 30Z234 1539 caspetenerg om www energy/aS corn I1ffo7sKo7IIa QAIQC Summary Report Client Denison Mines USA Corp Report Date 07120109 Project Semi-Annual Surface Water Work Order C09060212 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method E907.0 Batch RA-TH-ISO-0829 Sample ID LCS-RA-TH-ISO-0829 Laboratory Control Sample Run EGG-ORTEC 090608A 06/11/09 0850 ThorIum 230 4.7 pCi/L 96 70 130 Sample ID C09050953-O09AMS Sample Matrix Spike Run EGG-ORTEC_090609A 06/11/09 0850 Thorium 230 110 pCi/L 90 70 130 Sample ID C09050953-O09AMSD Sample Matrix Spike Duplicate Run EGG-ORTEO9O6OSA 06/11/09 0850 Thorium 230 12.3 pCi/L 100 70 130 11 41.5 Sample ID MB-RA-TH-ISO-0829 Method Blank Run EGG-ORTEC_090608A 06/I ii09 1345 Thorium 230 -0.02 pCi/L Thorium 230 precision 0.05 pCi/L Thorium 230 MDC 0.1 pCi/L Method E907.0 Batch RA-TH-ISO-0B40 Sample ID C09060821-OOIAMS Sample Matrix Spike Run EGG-CRTEC_090701A 07/09/09 0935 Thorium 230 26.7 pCi/Filter 117 70 130 Sample ID C09060821-OD1AMSD Sample Matrix Spike Duplicate Run EGG-ORTFC_090701A 07/09/09 0935 Thorium 230 27.2 pCi/Filter 118 70 130 1.8 53.6 Sample ID LCS-22869 Laboratory Control Sample Run EGG-ORTEC_090701A 07/09/09 1346 Thorium 230 9.77 pCi/Filter 89 70 130 Sample ID MB-22869 Method Blank Run EGG-ORTEC_090701A 07/09/09 1346 Thorium 230 -0.4 pCi/Filter Thorium 230 precision 0.4 pCi/Filter Thorium 230 MDC 0.6 pCi/Filter Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration Not detected at minimum detectable concentration Co m p a n y Na m e it L u s Re p o r t Ma i l Ad d r e s s IL r c 5 K sa 23 k 6f 1 fl S 7 j In v o i c e Ad d r e s s 84 0 1 6 Sp e c i a l R e p o r t / F o r m a t s EL I mu s t be no t i f i e d pr i o r to sa m p l e su b m i t t a l fo r th e fo l l o w i n g ED W LJ A 2 L A GS A Da t a PO T W I W W T P Fo r m a t _ _ _ _ _ _ _ ES t a t e EL E V E L I V DO t h e r DN E L A C Pr ec t Na m e PW S Pe mi t to Sa m p l e Or i g i n EP N S t a t e Co m p l i a n c e Pl - i% Jc S t $ a q c iÆ i j t St a t e Ye s No Co n t a c t Na m e Ph o n e / F a x Em a i l Sa m p l e r Pl e a s e Pr i n t 1Z 0 4 6n i t i I In v o i c % C o n t a c t Ph o n e Pu r c h a s e Or d e r Qu t e / S o t t l e Or d e r Co n t a c t EL I pr i o r to Sh l p p d by RU S H sa m p l e su b m i t t a l I/ b sc h e d u l i n g S e e fo r ch a r g e s an d cd o t a r ID s In s t r u c t i o n Pa g e 4c j tt e r n p Co m m e n t s Rq cc hS .t h l 1E No El .u cu s t o d y s e a l c 3 r / N Bo t t l e s Li Co o l e r s ti MA T R I X In t a c t Sig n a t u r e Ma t c h SA M P L E ID E N T I F I C A T I O N am e Lo c a t i o n In t e r v a l et c Co l l e c t i o n Da t e Co l l e c t i o n Ti m e 1Q ii ii i 10 __ _ _ _ __ _ et h q j i s h e d by Da t e f n n i e Cu s t o d y T- ed T h p r W uT h m e Sig n a t u r e Re c o r d R4 l i n q j i s h e d by pr i n t Sig n a t u r e MU S T be l Re c e i v e d ty p r i n t Da t e f n r n e -7 We d by Ld b o r a t q t y Da t e / 7 f t n e Si g n e d Sa m p l e Dis p o s a l Re t u r n to cl i e n t La b Di s p o s a l O/ g 4 4 In ce r t a i n ci r c u m s t a n c e s sa m p l e s su b m i t t e d to En e r g y La b o r a t o r i e s In c ma y be su b c o n t r a c t e d to ot h e r ce r t i f i e d la b o r a t o r i e s in or d e r to co m p l e t e th e j1 g i re q u e s t e d Th i s se r v e s a s no t i c e of th i s po s s i b i l i t y All su b - c o n t r a c t d a t a wil l be cl e a r l y no t a t e d on yo u r an a l y t i c a l r e p o r t Vis i t ou r we b si t e at ww w . e n e r p y l a b . c o m fo r ad d i t i o n a l in f o r m a t i o n do w n l o a d a b l e fe e sc h e d u l e fo r m s an d li n k s LA S O / A T O A u E S Ch a i n of Cu s t o d y an d An a V y t i c a l Re q u e s t Re c o r d Pa g e of _ _ - PL E A S E PR I N T - Pr o v i d e a s mu o h in f o r m a t i o n as oo s s i b l e Energy Laboratories Inc iI%lo rko rd Rece Ic list Denison Mines USA Corp C09060212 Login completed by Kimberly Humiston Date and Time Received 6/4/2009 930AM Reviewed by Received by al Reviewed Date Carrier name Next Day Air Shippingcontainer/cooleringoodoondition Yes ff No NotPresent Custodysealsintactonshippingcontainer/cooler Yes No NotPresent Custodysealsintactonsamplebottles Yes No NotPresent L1 Chainofcustodypresent Yes No fl Chain of custody signed when relinquished and received Yes No fl Chain of custody agrees with sample labels Yes No Samples in propercontainer/bottle Yes No Sample containers intact Yes No jJ Sufficientsamplevolumeforindicatedtest Yes El No All samples receivedwithin holding time Yes No Container/Temp Blank temperature 4C On Ice Water-VOA vials have zero headspace Yes No No VOA vials submitted Water pH acceptable upon receipt Yes No NotApplicable Contact and Corrective Action Comments Samples were filtered and preserved in lab with 2mL HNO3 for radiochemistry and metals analyses ENERGVLASOHATOES INC p2393 Sail Creek Hiqhway 52601 R07ox3258 Caspei WY82602 ____________Tall flies 885.235.0515 235.0515 Far 307234.1639 caspercsnerg am wwwenergy/ab.com li2aO/4tQafa CLIENT Denison Mines USA Corp Date 20-Jul-09 Project Semi-Annual Surface Water CASE NARRATIVE Sample Delivery Group C09060212 ORIGINAL SAMPLE SUBMITTALS All original sample submittals have been returned with the data package SAMPLE TEMPERATURE COMPLIANCE 4C 2C 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 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 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 days SOIL/SOLID SAMPLES All samples reported on an as received basis unless otherwise indicated ATRAZINE SIMAZINE AND PCB ANALYSIS USING EPA 505 Data for Atrazine and Simazine are reported from EPA 525.2 not from EPA 505 Data reported by ELI using EPA method 505 reflects the results for seven individual Aroclors When the results for all seven are ND not detected the sample meets EPA compliance criteria for PCB monitoring SUBCONTRACTING ANALYSIS Subcontracting of sample analyses to an outside laboratory may be required If so ENERGY LABORATORIES will utilize its branch laboratories or qualified contract laboratories for this service Any such laboratories will be indicated within the Laboratory Analytical Report BRANCH LABORATORY LOCATIONS eli-b Energy Laboratories Inc Billings MT eli-g Energy Laboratories Inc Gillette WY eli-h Energy Laboratories Inc Helena MT eli-r Energy Laboratories Inc Rapid City SD eli-t Energy Laboratories Inc College Station TX CERTIFICATIONS USEPA WY00002 Radiochemical WY00937 FL-DOH NELAC E87641 Radiochemical E871017 California 02118CA Oregon WY20000I Utah 3072350515 Virginia 00057 Washington CI 903 ISO 17025 DISCLAIMER The results of this Analytical Report relate only to the items submitted for analysis ENERGY LABORATORIES iNC CASPERWY 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 ELIs certification coverage by visiting www.energylab.com ELI appreciates the opportunity to provide you with this analytical service For additional information and services visit our web page www.energylab.com THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT White Mesa Mill Standard Operating Procedures Book 11 Environmental Protection Manual Section 2.1 Date 2/07 Revision DUSA- Pages of Attachment FIELD WATER ANALYSIS SURFACE WATER WHITE MESA MILL LOCATION Circle one od Cr Westwater Canyon Other describe___________ DATE 622oaT 7.cpHBUFFER7.0 _____________ SPECIFIC CONDUCTIVITY 77 STEAM DEPTH pH of WATER ______________________ BY Samplers initials pHBUFFER4.0_ j.tMHOs TEMP CONDjimhos 750J pH Units %74 TempC I5.5t CONDutnihos VO COND 1smhos pH units ____ Temp C___ COND pnihos pH units _____ TempC___ Comments 4ncn O1OMtamA sgt.4.a k-rsA.dLt Zm pA4 2r is4r4 stm1dJ fr2r 902 1aed/Sir4 pH units Temp 13