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HomeMy WebLinkAboutDRC-2007-001501 - 0901a0688080cdd8DENISOJ)X# MINES December 28,2007 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 Yougs very truly,k*Rfu*. Denison Mines (USA) Gorp. 1050 'l7th Street, Suite 950 Denver, CO 80265 USA Tel :303 628-7798 Fax : 303 3894125 www.denisonmines,com -,r oB/ -r" Dear Mr. Re: State of Utah Radioactive Material License No. UT1900479 White Mesa Mill, Blanding, Utah Semi-Annual Effluent Monitoring Report for Period January 1,2007 through June 30,2007 As required by Utah Administrative Code, R 313-24-4 (incorporating by reference l0 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 1,2007 through June 30, 2007. If you have any questions regarding this report, please contact Mr. David Turk or myself at telephone number (435) 678-2221. Steven D. Landau Manager, Environmental Affairs Cc Ron Hochstein Harold Roberts David Frydenlund David Turk Tom Rice, Ute Mountain Ute Tribe Robert Duraski, EPA Region 8 White Mesa Uranium Mill Radioactive Materials License UT900479 Semi-Annual Effluent Monitoring Report (January through June, 2007) Prepared For: Utah Department of Environmental Quality Division of Radiation Control Prepared by Denison Mines (USA) Corp. 1050 17th Street, Suite 950 Denver, CO 80265 Decemberr 2007 I I I I T I I I I I I I t I t I I I T 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 implernented at the time of mill construction, operated with appropriate adaptation over time, and remain consistent with the Mill's Radioactive Materials License and guidelines developed by the Nuclear Regulatory Commission (U.S.N.R.C. Regulatory Guide 4.14, Radiological Efiluent and Environmental Monitoring at Uranium Mills-Rev. l, ML003739941), 1980). Accordingly, the Mill monitors the following environmental media and conditions: 1) Airborne particulate radionuclide concentrations obtained from the following sampling stations: o North, East and South of the Mill Site: BHV-I & BHV-2 (north), BHV-5 (east), and BHV-4 (south) o BHV-I serving as a surrogate for the nearest resident, (i.e BHV-I is approximately 1.2 miles north of the Mill, but approximately 0.4 miles closer to the Mill than the actual nearest resident) o A background location distant to and west of the Mill (BHV-3), which was monitored for airborne particulate up until November, 1995, at which time background was established. o A station specifically requested by the White Mesa Ute Community south of the Mill Site (BVH-6) 2) External (direct) gamma radiation measured at air monitoring stations BHV-I, BHV-2, BHV-3, BHV-4, and BHV-5. 3) Vegetative uptake of radionuclides at three site periphery locations 4) Stack release rates from the facility's air emissions sources 5) Surface water within the Cottonwood Creek and, when flowing, the Westwater Creek drainage, both located west of the Mill 6) Soil radionuclide activity obtained near the air monitoring stations 7) Ground water (up and down gradient) of the Mill facilityt This semi-annual effluent report provides the results of the specific monitoring and sampling activities that were undertaken during the subject reporting period, including: o Airborne particulate concentrations and radionuclide activity o Radon-222Meastxernentso External radiation measurements o Vegetative radionuclide uptake o Radionuclide release rates measured at the yellowcake stack and baghouse o Surface water radionuclide content I Ground water sampling is reported separately pursuant to the State of Utah Ground Water Discharge Permit No. UGW370004 and is not included with this report. Page i ii 1 1 2 J 5 6 7 7 8 8 8 ii T I I t I I I T I t I I I I I I T I T Table of Contents Section Introduction.... . . Table of Contents...... 1.0 Environmental Air Sampling 1.1 Program Overview. 1.2 Sampling Protocol & Analytical Results. 1.3 General Observations. . ... 1.4 Specific Sampling Station Data.. 1.5 Radon-222... 2.0 Extemal 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 A Tab 1 Tab2 Tab 3 Tab 4 Tab 5 Tab 6 Attachment B Attachment C Attachment D Attachment E Attachment F Attachment G Sampling Station & Site Map BHV-I Air Sampling Graphs &DataTable BHV-2 Air Sampling Graphs &DataTable BHV-3 Air Sampling Graphs &DataTable BHV-4 Air Sampling Graphs & Data Table BHV-5 Air Sampling Graphs &DataTable BHV-6 Air Sampling Graphs &DataTable Air Radionuclide Lab. Results and QA/QC Air Particulate Loading Graphs Environmental TLD Graph and Laboratory Results Vegetation Graphs, Data Table,Lab. Results and QA/QC Stack Sample Laboratory Results Surface Water Graphs, Lab. Results and QA/QC I I I I I I I I T I I I I I I I I t I 1.0 Environmental Air Samplins 1.1 Program Overview The environmental airborne particulate monitoring program at the White Mesa Mill ("the Mill") currently utilizes five air sampling stations. Four high-volume continuous air sampling stations (BHV-l, BHV-2, BHV-4, and BHV-5) are required by the Mill's Radioactive Materials License. These sampling stations serve as sentinels for airbome particulate which could potentially emanate from the Mill site. ln addition to its general site monitoring function, location BHV-I also serves as a conservative surrogate for concentrations at the nearest resident, because it is located approximately 1.2 miles north of the Mill just south of the nearest resident but between the Mill and that resident. With regard to background monitoring, the Mill previously operated a continuous high-volume air sampling station (BHV-3) which was located approximately 3.5 miles west of the Milling operation. With the approval of the U.S. Nuclear Regulatory Commission and effective November, 1995, this station (BHV-3) was removed from the active air monitoring program. At that time, IUSA proposed (and the NRC determined) that a sufficient air monitoring data base had been compiled at station BHV-3 to establish a representative airborne radionuclide background for the Milling facility. It should be noted, however, that while air sampling was discontinued at this location, guunma measurements and soil sampling continue to be collected at BHV-3. In addition to the environmental air sampling locations described above, a sixth station (BHV-6) was installed at the request of the White Mesa Ute Community. This station began operation in July of 1999 and provides airborne particulate information in the southerly direction between the Mill and the White Mesa Ute Community 1.2 Sampling Protocol and Analytical Results Airborne particulate monitors are operated continuously at each of the high-volume air sampling stations referenced above. Particulate sample collection filters are gathered by site technicians weekly in accordance with the Mill's environmental air sampling procedures and are composited on a quarterly basis for laboratory analyses. The analyical parameters applied to the collected filters are: Uranium-Natural activity, Thorium-230 activity, Radium-226 activity, and Lead-210 activity. In addition to the requisite nuclide determinations, particulate loading is determined for each filter and composited as a quarterly mass-loading estimate for review purposes only. Fugitive dust standards for the facility are limited by the Mill's State of Utah air quality permit, which sets a 20/o visual opacity standard. The specific locations of the Mill's airbome particulate monitoring stations are depicted on the attached figure, High Volume Air Monitoring Stations (Attachment A). The analytical results of radionuclide particulate sampling for each monitoring station operated during this January through June, 2007 reporting period are provided under separate sampling station attachment tabs beneath Attachment A to this report (Tabs 1-6). Each Tab contains graphical illustrations of the nuclide concentrations in log-scale presentation format. The graphs display reported data over time since the 1981 inception of the Mill's environmental air monitoring program. I t I I I I I I I t I I I t I I t I I The actual analytical results (and associated QA/QC information) reported by the laboratory are provided under Attachment B. It should be noted that for graphical illustration pu{poses, values reported at zero, values reported at less than the prescribed detection limit (< 1 x 10-16 uCi/ml) and missing values were plotted as 1 x 10-16 uCi/ml concentrations. Where other "less than" values were indicated (e.g. data where detection limits varied from 1 x 10-16 uCi/ml) the detection limit concentration was utilized for plotting the data point. The reader should also note that this graphing convention is not utilized to formulate station average information, nor is it intended as a precedent for data treatment. Instead, the intent here is to provide a conservative viewable depiction of site airbome nuclide information. The conservative nature of this format is founded in the fact that the actual concentration below the detection limit can not be determined and, as such, the plotted point is at a higher concentration than the actual activity concentration of the collected sample. In accordance with the above, the following environmental air sample station attachments are provided with this report for the period: o BHV-I, Nearest Resident "Surrogate" Monitor Tab I o BHV-2, North Monitor Tab2 o BHV-3, Background Tab 3o BHV-4, South Monitor Tab 4 o BHV-5, West Monitor Tab 5o BHV-6, White Mesa Ute CommunityMonitor Tab 6o Radionuclide Data o ParticulateLoadingData 1.3 General Observations Attachment B Attachment C The results of environmental air monitoring for this semi-annual period indicate that for all nuclides at all monitoring stations airborne radionuclide particulate activity concentrations were well below regulatory Effluent Concentration Limits (ECL's) and the Companies ALARA goals. It is noteworthy and expected that Pb-210 concentrations are elevated when compared to the other parent nuclide concentrations (i.e. U-nat, Th- 230 and Ra-226). This phenomenon is due to the well-established controlling effect experienced world-wide as a result of the ubiquitous presence of radon in the earth's atmosphere. Accordingly, elevated Lead-210 presence in disequilibrium with parent nuclides measured here is not associated with uranium milling operations. Radon-222 emanates as a decay-chain progeny of the Radium-226 contained in the soil of the earths crust and is dispersed generally throughout the earth's atmosphere. The electrically charged short and long-lived decay products of Radon-222 attach to ambient dust particles found naturally in the atmosphere and are carried with the air. Lead-210 is the longest lived of these decay products and is the decay product of the shorter-lived radon progeny. As such, it accumulates as an electrical attachment on the nafural 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 T t T I T I I T T I I T t t T I T T T activity. At the Mill's BHV air monitoring stations, all dust (ambient natural and mill derived) is collected by the sample filter. Because of the natural elevation of Pb-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 Mill's presence. By way of illustration, average groundJevel concentrations have been reported for selected States (NCRP Report 94, 1992) and are summarized in Table I below, demonstrating elevated Lead-210 activity where no uranium milling operations are located nearby. Lead-210 activity concentrations can be expected to be even higher for locations in the western U.S. where uranium ore bodies are commonly located. Table 1- NCRP Report 94-Global Lead-210 Concentration Example 1.4 Specific Sampling Station Data The results of airbome particulate monitoring for the period (without background subtraction) are provided by sampling station and nuclide in Tables 2-5 below. Along with these data, the tables present comparative Effluent Concentration Limits (ECL's) and the ECL percentage measured at each of the monitoring stations sampled during the period. A review of these data supports the conclusion that airborne particulate is well controlled at the Mill. More specifically, in all cases the measured activity concentrations were well within the ECL, as well as the Mill's ALARA Goal (i.e. 25o/o of the ECL). In fact, the data obtained since program inception in 1981 indicates that only one individual quarterly measurement (TH-230 at BHV-5 for the 2nd qtr, 1996) has ever exceeded the ECL at the Mill. With regard to this particular single measurement, while it is important to consider and evaluate an individual measurement exceeding the ECL, for public dose estimation purposes it is the annualized data that are of primary significance. In this instance, the annualizedTh-230 data for BHV-5 in 1996 are well below the ECL for the annual period. In addition to these observations, evaluation of the data by comparison to the Mill's ALARA Goals reveals that, with very few exceptions, the gross (background inclusive) measurements also do not exceed the site's ALARA objectives which have been established at 25o/o of the ECL (i.e. only 9 of the 2,024 gross nuclide determinations exceeded the Mill's self-imposed ALARA threshold). State Pb-2l0 Concentration uBq/l!['uCi/mI California 600 t.6E-t4 [llinois 1500 4.18-14 Ohio 300 8.1E-15 Massachusetts 700 t.9E-14 Monitoring Station 1"' Qtr.Result (uCi/ml) 2"'Qtr.Result (uCi/ml) Effluent Concentration Limit (ECL) (uCilml) Average Percent ECL BHV-I 2.23E-t6 3.35E-6 9 E-14 0.3 i BHV.2 t.40F-16 1.04E-6 9 E-t4 0.14 BHV-4 7.08E-16 9.4t8-6 9 E-t4 0.92 BHV-5 1.08E-15 1.54E-5 9 E-14 t.46 BHV-6 5.36F-t6 1.08E-5 9 E-14 0.89 Table 2- Air Monitoring Station Results U-Nat (Comparison to Limits) Table 3- Air Monitoring Station Results Th-230 (Comparison to Limits) Table 4- Air Monitoring Station Results Ra-226 (Comparison to Limits) Table 5- Air Monitoring Station Results Pb-210 (Comparison to Limits) Monitoring Station 1" Qtr.Result (uCilml) 2"" Qtr.Result (uCi/rnl) Effluent Concentration Limit (ECL) (uCi/ml) Average Percent ECL BHV-1 1.63E-16 t.34E-16 2E-14 0.74 BHV-2 <1.00E-16 <1.00E-16 2E-t4 NA BHV-4 2.8t8-16 3.20F-t6 2E-14 1.50 BHV-5 8.22F-16 8.16E-16 2E-14 4.09 BHV-6 3.15E-16 2.18E-16 2E-14 1.33 Monitoring Station l*' Qtr.Result (uCi/ml) 2no Qtr.Result (uCilrnl) Effluent Concentration Limit (ECL) (uCilml) Average Percent ECL BHV-I <1.00E-16 1.368-16 9E-J 0.01 BHV-2 <1.00E-16 <1.00E-16 9E-3 NA BHV-4 <1.00E-16 1.99E-r6 9E-J 0.02 BITV-5 2.268-t6 4.788-t6 9E-J 0.04 BIry-6 <1.00E-16 1.548-t6 9E-J 0.01 Monitoring Station 1" Qtr.Result (uCi/ml) 2"o Qtr.Result (uCi/ml) Effluent Concentration Limit (ECL) (uCilml) Average Percent ECL BHV-1 t.65E-t4 t.788-t4 6E-3 2.86 BHV-2 t.638-t4 1.368-14 6E-3 2.49 BHV-4 r.548-14 2.568-t4 6E-J 3.42 BHV-5 t.628-14 2.t2E-t4 6E-J 3.12 BHV-6 1.43E-15 2.048-t4 6E-J 2.89 T t I T I I I I I I I I I I I I T t I 1.5 Radon-222 Due to the unavailability of monitoring equipment to detect the new 10 CRF Part 20 standard, and with the approval of NRC, Radon 222 monitoring at BHV stations was discontinued in 1995. Instead, Denison demonstrated compliance with these limits and the requirements of R313-15-301 by calculation, authorized by the NRC and as contemplated by R3l3-15-302 (2) (a). This calculation was performed by use of the MILDOS code for estimating environmental radiation doses for uranium recovery operations (Strenge and Bender 1981) and more recently in 2003 by use of the updated MILDOS AREA code (Argonne 1998). The analysis under both the MILDOS and MILDOS AREA codes assumed the Mill to be processing high grade Aizona Strip ores at fulI 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 the nearest potential residence, approximately 1.2 miles north of the Mill, the public, as well as at all other receptor locations. These calculations revealed projected doses to be below the ALARA goal of 10 mrem/yr for air particulate as set out in R313-15-101(4). Radon had also been calculated to be within regulatory limits. While confident that past modeling was sufficiently accurate, detection equipment has improved since 1995. Accordingly, the Mill implemented Alpha Track monitoring for radon at its environmental air monitoring stations commencing with the l't Quarter of 2007. When evaluating alpha track data and compliance with the effluent concentration limit for radon, two referenced limits are listed in the regulations. One limit (1x 10-10 uCi/ml or 0.1 pCi/l) is for instances where radon daughters are present with the radon, and are in 1006/o equilibrium with the parent F.n-222. The other listed concentration limit (1 x 10-8 uCi/ml or l0 pcill) is applicable when radon daughters are not present. At the White Mesa Mill, 100% equilibrium of radon progeny with parent Rn-222 is unrealistic given the short half lives of the nuclides considered and the short travel time to the monitoring locations. Radon emanates from the ground (or mill tailings) without daughters present, and the daughters grow in over time. It is therefore necessary to evaluate radon daughter equilibrium at each air monitoring station utilizing site-specific wind speed and distance information to derive site-specific Effluent Concentration Limits (ECL's). Such disequilibrium situations and altemative calculations are anticipated by the regulations and, in particular, R3 t 3- 15-302(3) provides a means by which the licensee may adjust the effluent concentration values in Appendix B to 10CRF, Part 20 at table 2 (which are incorporated by reference into R313-15-302(2xb)(i)) to account for disequilibrium. The regulatory purpose of such an adjusfinent is to appropriately take into account the actual characteristics of the measured effluents, including radioactive decay equilibrium. 6 I I I t I I t t I I t T I t I I T I I Toward this end, Denison utilized an established (EPA, 1986) outdoor equilibrium formula to determine the appropriate Equilibrium Factor for use in calculating the ECL for disequilibrium conditions. The EPA expression of the outdoor Equilibrium Factor (EF) is derived by the following equation: E F = I . 0 - 0. 047 9 exp?' t +'te) - 2.lg 63exp (-r / 38'6) + | .2442 expc t t 28'4) [Where, t is the travel time in minutes (distance/wind speed)] Once the Equilibrium Factor has been determined, the ECL for each air monitoring station is determined by dividing the 0.1 pCi/l limit (for situations when daughters are present in equilibrium) by the Equilibrium Factor (EF). By utilizing this formula, Denison has determined the appropriate (equilibrium adjusted) ECL's for each of its air monitoring stations. This information, the data inputs used to determine the Equilibrium Factor, and the results of sampling for this report period are shown in Table 6 below. It should be noted when observing the comparison between the actual measurement value and the derived ECL that the derived ECL provides ample protection for members of the public. More specifically, by utilizing current ICRP dose conversion factors the ECL's established here represent approximately 25 mrem for a continuous exposure at the monitoring stations. Therefore these values serve as an ALARA goal and would yield doses well below the 100 lnrem standard for individual members of the public. Table 6- Location Specific Effluent Concentration Limits forRn-222 x These values include subtraction of the background concentrations measured at BHV-3. 2.0 External Radiation (Direct Gamma) Gamma exposure rate estimates were measured for the first and second quarters of 2007 utilizing passive integrating devices, thermoluminescent dosimeters (TLD's). These dosimeters were co-located at each of the license-required high-volume air sampling stations and at the designated background monitoring station (BHV-3). Measurements obtained from location BHV-3 have been designated as background due to BHV-3's remoteness from the Mill site and attendant lack of potential for exposure from the Mill operation (i.e. BHV-3 is located approximately 3.5 miles west of the Mill site). The results of the environmental TLD measurements and semi-annual cumulative above- llAir', i #rfrrfrt l fil* r,,i;l$ pt r#I ', ltt : ;i ltl a )lll. I l ):j;ii|: ti {i . ;;., ..; , itt$urlar}lu,faI{fi;iarit filYl ill:fii!!1"liiilitlt W[i)l:ffi, W;; BHV-5 4.3 900 3.49 0.07 1.43 0.1 0.3 BHV-6 4.2 1600 6.35 0.12 0.83 0.4 0.4 BHV.l 4.3 2000 7.75 0.14 0.71 0.4 0.4 BHV-4 2.8 2000 I 1.90 0.20 0.s0 0.5 0.3 BHV-2 4.3 4900 18.99 0.29 0.34 0.1 0.7 background data are provided in Table 7 below. In addition, measurement data obtained at these locations are graphically presented at Attachment D to this report. Table 7- Environmental TLD Measurements (Gamma) Monitoring Station 1'r Qtr Result (mrer-n) 2t- Qti Result (mrem) 1"' Qtd Resqltless, Backglound tmrem) 2'- Qtr. RequttLjss Baekgound (mrem) CLug-.ulative Semi-Arinual Estimate ' (mrem) BHV.l 28 24 a.J 2 -1 BHV-2 27 23 -4 I -J BtIV-3 31 22 NA NA NA BHV-4 23 23 -8 I -7 BHV.5 26 26 -5 4 -1 The results for this period indicate that above background measurements for stations BVH-I, BVH-2, BVH-4 and BVH-5 are well within regulatory limits. It should be noted that the background measurement (BHV-3) for the l't quarter, 2007 is anomalously elevated, suggesting either in-transit exposure or laboratory measurement error. The annual individual member of the public (IMOP) limit is 100 mrem/yr at the property boundary for combined internal and external exposure. For this six month period, the maximum above background quarterly extemal exposure estimate indicated by TLD measurement near the site boundary was 4 mrem at BHV-5 (2"d Quarter), well within the Mill's ALARA goals. 3.0 Vesetation Samples Vegetation samples are collected at three locations around the mill periphery. The sampling locations are: 1) Northeast,2) Northwest and 3) Southwest of the Mill facility. The vegetation samples are collected during early spring, late spring and fall (e.g. the growing seasons). Graphical log-scale presentation of the vegetative radionuclide uptake observed for this reporting period and results reported by the analytical laboratory (including QA/QC information) are included at Attachment E of this report. The 2007 data compared to the results of previous years indicate no increase in uptake of Ra-226 or Pb-210 in the vegetative growth collected and are within the variation of previous sampling episodes. Trending of Radium-226 concenffations is generally down when the entire period of record is considered, whereas, Lead-210 concentrations show no clearly discemable trend. It should be noted that vegetation samples in recent years were collected during a period of severe drought in San Juan County. For this reason sampling was dramatically affected due to the scarcity of available vegetative species at the respective sampling locations. 4.0 Stack Sampline The Mill was in operation from January, through June of 2007. As such, processes involving effluent control equipment and associated stack emissions (i.e., the yellowcake I I I t I t I I I I I dryer and baghouse) were operating during the report period. The analytical results of the yellowcake stack sampling effort for this period are provided in Table 8 below, indicating the uCi/cc release rate for the nuclides analyzed (U-nat, Th-230, Ra-226 and Pb-210 semiannually at both locations and uranium only at the yellowcake dryer for first quarter). The actual analytical results and attendant QA/QC information reported by the laboratory are provided in Attachment F to this report. It is important to note that stack effluent concentrations are not comparable to environmental air sampling station ECL's for regulatory compliance purposes. The ECL is a limit that applies to the site boundary locations and is not applicable to effluents from mill processes on the Mill site. These stack release data are more appropriately utilized for dose modeling purposes and dose modeling is not computed for semi-annual reporting purposes. Table 8- Stack Effluent Concentration and Release Rate 5.0 Surface Water Monitorins Surface water samples were collected from Cottonwood Wash during the l't and 2"d Quarters during this reporting period, however, Westwater Creek was not able to be sampled because it was dry for the quarterly sampling events. The analytical results are compiled in tabular format in Attachment G to this report. In addition, Attachment G includes the actual results reported by the laboratory, as well as the attendant QA/QC information accompanying the laboratory's report. Cottonwood Wash is an intermittent ephemeral drainage located southwest and down-gradient of the Mill complex. Radionuclide data (U-Nat, Th-230 andRa-226) do not indicate trending over time nor are influences from the Mill operations evidenced by the reported data. 6.0 Soil Sampline Annual soil samples are collected by the Mill staff during the third quarter of each year. 7.0 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, 2007. This information is retained at the Mill site for agency review. I I I T I I I I Radionuclide Quarterly (1" Quarter) Sampling Semi.AXq ual (2"d Qugfie, $amlling NorthYellowcake Dryer North Yellowcake Dryer Yellowcake Bashouse U-Nat. uCi/cc U-Nat. uCi/sec 4.47 E-11 3.69 E-4 1.86 E-10 2.358-3 3.87 E-12 2.07 E-5 Ra-226tCt/cc Ra-226 uCi/sec NA 4.098-14 5.t78-7 <2.45E-14 <6.12F-7 Th-230 uCi/cc Th-230 uCi/sec NA 1.38 E-14 1.75 E-7 1.35E-14 3.37 E-7 Pb-210 uCi/cc Pb-210 uCi/sec NA <2.21E-14 <2.79 E-7 <2.458-14 <6.t28-7 T I t I I I I I I I I I t t T T T I T 9 *,!!Fry...I.$-t*I-.I I I I I I I I I I I T '..*'lrt* II Il_- l ""jftil#ati 4=:- I 5iI Ji i ..flr":,j#'i f; ,,'"-f!'lt--f-+;-s-- 1 1 L*t t,, t*,,f ril-dlfr f ( jf-{n#rF J L--, ..nfr"'f',ul'"** d' t-l -[ ) L -:41i-F I I I : I i 'l'.rr If--i----o, I*1.* Irllillt".tl{illir;' I+I+_ _r-;tI1l".,!at\llt1.,I .ttItl-',elIt\ - I -- I-t.t .r | /i l--( ll I ..'' ,l_i\ I I i--- r-- I I Ii( i,.) 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SCFrle6 47A 47A ^la Al^ 02{ds 5.mEn5 1El6 5.S{1 1.S16 o1.Jan{7 8.3rEr6 ffi 923Efl 2.49E-16 2-tpt47 5.36E16 1En6 5.S{1 3.15E{6 2Julfl 1.08Ei5 ffi 1.20E+m 2.18Er6 3.SE-17 1E-16 dgE{l 1.1S16 5.0G.17 rEr6 8.3rE{1 | <1.mE-l6 3.11E-17 --JE;- 1.osEff | <1.mEn6 5.74Er7 ffi 7.28E0 1.54E-16 9.38Ei7 1Et6 1.SEfl 2.13E15 l.81El6 2Ei5 3.ffi41 NA 1Er6 <1.1tE+ I i.7OEi4 5.17Er6 2E-15 2.84Efi NA 1ffi .r.rretzl r.cert z.rc-te m z.sses 7.42E-17 ffi 1.72Eq2 2.O4E-11 7.42Et6 2 3.41ES ENEEGY LAB0BATOfiEF! ry19!'_2393 sati creek Highway (sz60t)' P.o. Bltx oz58 , caspet; wyaz60zTollFree888.235.05/5 . i" ,4U,05t5 . Fax O0Z.ZA4.t63g ,b[sperAienergia ;i; wnw;i;;Aiiab.ffi;|i.,.,: , I l' I I I I I I I I I t t I I I I I I LLD's are from Regulatory Guidc 4.14* EftIuent Conccntration provirlcd by Denison Mines IIICIH VOLUME AIR SAMPLING REPORT CLIENT: DENISONMINESREPORTDATE: Mny 9,200? PROJECT 2007 Environmcntal ,A,ir Sampling SAI\{PLE ID: B}IV-I Quartcr/Date Samplerl Air Volurnc Radionuclide Conccntralion pCi/mL Error Estimatc uCi/mL L.L,D. pCi/mL Efllucnt Cpnc,*7o Efllucnt Conccntration c07040 I 93-00 I First Quarter 2007 Air Volume in ml-s l.3 tE+l I naru 2.238-16 N/A r.00E-t6 9.008-14 2.48E-0 taoTh1.63E-I6 3.7sF-17 1.00E-t6 3.008-t4 5,45E-01 'oRa < 1.00E-16 NIA r.008-t6 9.008- t 3 < !.1 tE-022!oPb 1.658-14 4.39E-16 2.008- t s 6.00E- t 3 2.75E+00 Trackr*co7040193 page I I ENERGY LABOBATOHIES, lNC. . 2393 Salt Creek Hr?hway (82601) . PO. Box 3258 , Caspet WY A2602 TbllFree 888.235.0515 ' i 'e-35.0515 ' Fex 307.234.1639 ' casper@energyl' tn'wwwehergylab.com I I Client: Project: Lab lD: Client Samplo LABORATORY ANALYTIGAL REPORT Denison Mines 1st Quarter 2007 EnvironmentalAir Sampling c07040193-001 lD: BHV-1 Report Date: 05/09/07 Collection Date: 04lO2lO7 DateReceived: 04lO4lO7 Matrir Filter I Analyses R€sult Unlts Qualifiers RL MCUQCL Method Analysis Date I By 2.O 0.4 o.4 I I I I T I T I I t I T RADIONUCLIDES - TOTAL Lead 210 Lead 210 precision (*) Radium 226 Radium 226 precision (t) Thorium 230 Thorium 230 precision (t) Uranium, Activity 2160 poi/Fitter 30.4 pCVFilter 8.2 pCi/Filter 2.0 poilFilter 21.4 pCi/Filter 3.2 pCi/Filter 29.6 pCi/Filter NERHL-65.4 NERHL.6'4 ES03-0 E903.0 E907.0 E907.0 sl /6020 04116107 12:00 / plj 04t16107 12100 / plj 04119107 10:03 / crw 04119107 10:03 / cniv O4l13lO7 't5:00 / dmf 04113107 15;00 / dmf 04112107 19:57 / aln Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit, MCL - Maximum contaminant level. ND - Not detected at the reporting limit.I T Trac k,ttCOTO4O i 93 pa ge ENEBGY LABORATORIES, lNC. . 2393 Salt Creek Highway (826Ail' PO. Box 3258 ' Caspe4, WY82602 Ton Free 888.285.0515 , :t '?35.0515 , Fax 307.234.1639 ' casper@energy(' ' tm ' wwuenergylab.um t I I I I I I I t I I I I I I I I I I LLD's are frorn Regulatory Guide 4.14* Effluent Coucentration provideel by Denisou Mues QuarterlDatc Sampled Ait Volume Radionuclide Concentrafion pCi/mL Error Estimate u.Ci/mL L.L.D. pCi/mL Effluenf Cotrc." uCi/rnL o/o Eflluent Concentratiou c07040193-002 First Quarter 2007 Air Volurne inrn], 1,35E+11 *U 1.40E-16 N/A 1.00E-16 9.00F-14 r.56E4l230,Ih t.00E-r6 N/A t.00E-16 3.00E-14 < 3.338-01226Ra< 1.008-16 N/A 1.008-r6 9.008-13 < LllE-o22roPtL63E-t4 4.31E-16 2.00E-15 6.008-13 2.728+00 Track#CO7O4O 1 93 Page t ENERQY LABORATOBIES, lNC. ' 2393 Salt Creek Hrghway (8260U ' PO. Box 3258 ' Caspet; l/W82602 Toll Free 888.235.05/5 ' i '235.0515 ' fax 302234,1639 ' caeper@energylr' 7m' wwwehergylab.mnI I I Client: Project: Lab lD: Client Sample LABORATO RY ANALYTICAL REPORT Denison Mines 1st Quarter 2007 Environmental Air Sampling c07040193.002 lD: BHV-2 Report Date: 05/09/07 Gotlection Dats; A4fi2lO7 DateRecelve d: O4lO4lO7 Matrix: Filter T Analyses Result Unlts Qualifiers RL MCUQCL Method Analysis Date / By 2.O o.4 0.4 I I I I t t I I T I I I RADIONUGLIDES. TOTAL Lead 210 Lead 2'10 precision (*) Radium 226 Radium 226 precision (t) Thorium 230 Thorium 230 precision (t) Uranium. Acllvity 22OO pCi/Filter 30.8 pCi/Filter 4.1 pCUFilter 1.4 pCi/Filter 6.2 pCl/Filter 2.1 pCi/Fiher 19.3 pCi/Filter Ml16l07 12:00 / ptj 04116107 12:0O I plJ 04119107 10:03 / crw O4119rc7 10:03 / cnrv 04113107 15:00 / dmf O4l13lO7 15:00 / dmf O4l12lO7 20:30 / aln NERHL-65-4 NERHL-65.4 E903.0 E903.0 E907.0 E907.0 s\ /6020 RL -Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant lsvel. ND - Not detected at the reporting limit.I I Track#co7o4o193 Page ENEBGY LABonAroRIEQ! l4t9:; 2393 sa! Qreek Higtway (8260U . P.o.Bpx aess . caspet; t/wa260z Toll Free 888.235,0515 . ,,r '$5.0515 . Fax 307,234.1639 .'casper@energyl' cm. m,w.eherlTytab,con I I I t I t I I t I I I I I I t I I I LLD's are from Rcgulatory Guitle 4.14* Effluent Concentration providetl by Denisou Mncs Qunrter.lDato Sampled Ai, Volume Radionuclide Concentration pCTmL Error Estimate tr,Ci/mL. N/A L.LD. pCi/mL Effluent Conc. ^ pCi/mL 7" Effluent Conccntratiou c07040193-003 First Quarter 2002 AirVolume inrn.L 1.33E+11 natU 7.08E-16 1.00E-16 9.00E-14 7.86E-01230.11 2.818-16 4.268-17 'I 00F-16 3.00E-14 9.37E-01226Ra< L00E-16 N/A 1.00E-16 9.00E-13 < l.llE-o22l0Pb1.54E-14 4.22F.-16 2.00E-15 6.00E-13 2.5?B+0A TracR#CO7O40 1 93 page I I ENERGY LABORATOHEA INC ' 2393 Satt Creek Highway (5260/) ' PO. 8.ox 3268 , Caspet Wy gz60p TollFree888.235.05/5 ' i '235.0515 ' Fax 30zzg4.to3s ,'citsper@energyy' om, w,u,ifri;byao.co; I I Client: Project: Lab lD: ClientSample LABORATORY ANALYTICAL REPORT Denison Mines 1st Quarter 2007 Environmental Air Sampling c07040193-003 lD: BHV-4 Report Date: 05/09/07 Collection Date: A4fi2lO7 DateReceived: O4l04lO7 Matrix: Filter I Result Units Quallfters RL MCL/QCL Method Analysis Date / By 2.O 0.4 0.4 0.4 2050 29.7 13 2.5 37.4 3.6 94.5 I I I t I I I I I I I I RADIONUCLIDES . TOTAL Lead 210 Lead 210 precision (t) Radium 226 Radium 226 precision (t) Thoriurn 230 Thorium 230 precision (t) Uranium, Activity pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Fifter pCi/Filter NERHL-65.4 NERHL-65-4 E903.0 E903.0 E907.0 E907.0 sw6020 04116107 12:00 / ptj 04116107 12:00l ptj 04119107 10:03 / cruv 04119107 10:03 / crw O4113t07 15:00 / dmf 04113n7 15:00 / dmf 04/1?/07 20:34 i aln I I Report RL - Analyte reporting limit.Definitions; eCL - euality controt lmit. MCL. Maximum oontaminant level. ND - Not detected at the repoiling timit. 6Trackr*COZO40 1 93 page ENEHCY LABORATOfiEA lNC. . 2393 Salt Creek Highway (8260/) ' PO. Bpx 3258 ' Caspet WY 82602 Toll Free 888.2i5.05l5 , i 'r-35.0515 ' tux 307.234.1639 ' casper@ene@i Tm ' www.energylab.com t t I I I I I t t I t t I t I I I I I LLD's arc from Regulatory Grride 4,14 ' Ellluent Concentration providecl by Denison Mines QuaftcrlDnte Sampled Air VoIume Radiouuclide Concentration llC,ilmI- Error Estitnnte uCi/ml, LL.D. pCVmL Effluent Conc* trCi/mL ToEffluent Concentrntion c07040193-004 First Quarter 2007 AirVolume inmL 1.35E+l I nitu 1.08E-15 N/A 1.00E-16 9.008-14 1.20E+00?sTh 8.22E-16 4.74E-17 1.00E-16 3.008-14 2.748+Q0226Ra2.268-16 2.898-t7 1.00E-16 9.00E-l 3 ?.5tE421loPb1.628-14 2.27E-16 2.00E-t5 6.00E-13 2.70E+00 Track#CO7O4O193 Page I Ef',Ef{fi,if&f{ff''rii{fi;"!'i,i![9ffi1#g!.:'#'igi3;W'f;!;.tr'::#ib[:':itr'I I I Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines 1st Quarter 2007 EnvironmentalAir Sampling c07040193-004 BHV.s RePort Date: 05109/07 Gollection Date: 04102107 DateReceived: O4lO4l07 Matrix: Filter I Result Units Quallfiers RL ItJlcuQCL Method Analysis Date / BYAnalys€s 2.0 0.4 0.4 0.4 I I t t I I I I I I I I RADIONUGLIDES -TOTAL Lead 2'10 Lead 210 precision (*) Radium 226 Radium 226 precislon (*) Thorium 230 Thorium 230 precision (t) Uranium, Adivity 2190 30,6 32 3.9 111 6.4 146 pCl/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter pCi/Filter NERHL-65*4 NERHL.6$4 E903.0 E903.0 E907.0 E907.0 sv\,6020 O4,1ON7 l2:00 / Plj 04116107 12:00 / plj O4l19lO7 10:03 / crw 04119107 10:03 / crw O4l13lO7 15:00 / dmf A4ngn7 15:00 / dmf O4fiUA7 20:38 / aln Report RL - Analyte reporting limit. QCL - Quality conttol limit. MCL - Maximum contamlnant level. ND - Not detected at the reporting limit. a I I Deflnltlons: Track#co7040 I 93 Page EfF*f{,ilf,?Ef{?f''$i{f;;'!'!,i![9:;ilflgg.:[f69i3,i3f,* 1';! ';,,ff:f:!'ffi:i'l' LLD's are from Regulatory Guide 4.14 * Blflucnt Concentration provided by Denison lVlines I I' I I I I I I I I I I I t I ir lr lr li TITGH VOLUME AIR SANTPLING RTPORT CLIENT: REPORTDATE: RELBASE NO. SAMPLEID: DDNISON MIMS May 9,2007 2007 Environmcntal Air Sampliog Brrv-6 Quartcry'Dnte Sampled Ah Volume Rndionuclidc Concentration pCi/mL Error Estimatc lCi/rnl. L.L.D. pCi/ml, Effluent Conc.* uCi,/mL 7o Efflucnt Conccntration c07040r93-006 First Quarter 2007 AirVolume in mLr 1.35E+l I raru 5.36E.16 N/A r.00E-16 9.008-14 5.958-01 23oTh 3.158-t6 3.1 lE-r7 r.008-16 3.00E-r4 1.058+00 2?6Ra 1.008- r 6 NIA 1.00E-t6 9.00E- r 3 < 1.1lE-02 2l0Pb 1.43E-r4 2.t4E-16 2.00E-rs 6.00E-13 2.39E+00 T r ac }<#CO7O4O 1 gg PaG, e I ENERGY LABOBATORTES, tNC. . 2393 Salt Creek Highway (5260U '. PO. Box 3250 ' Caspq ryY826A iollFree888.235.05l5 ' { 'e35.0515 ' Fax 302234.1639 ' casper@energyl' 2m'www'enerwao'ffim I t I Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines 1st Quarter 2007 Environmenlal Air Sampling c070401 93-005 BHV.6 Report Date: 05/09/07 Collection Datez 04lQ2lQ7 DateReceivedt A4h4lO7 Matrix: Filter T Analyses Result Units Qualifierc RL MCL/ OCL ltllethod Analysis Date, By 2.O 0.4 0,4 0.4 I I I I I I I I I I I I RADIONUCLIDES . TOTAL Lead 210 Lead 210 precision (t) Radium 226 Radiurn 226 precision (t) Thorium 230 Thorium 230 precision (*) Uranium, Ac{ivity 1940 28.9 13 2.6 42.5 4.2 72.7 pCi/Filter pCi/Filter pCilFilter pCi/Filter pCi/Filter pCi/Filtet pCi/Filter NERHL-65-4 NERHL-EH Es03.0 E903.0 E907.0 E907.0 sw6020 04116107 12:0A I pti 04116107'12:00 / p[ 04119107 10:03 / crw O4l19lO7 10:03 / crw O4l13lO7 15i00 / dmf 04113107 15:00 / dmf O4|1UO7 20:46 / aln Report RL - Analyte reporting limit. Definitions: eCL - euatity conhol limit. MCL - Maximum contaminant level. ND - Not detected at the repoting timit. T t TrackttCOTO4O 193 Page I ENEBGY LABORATOE\ES, tNC.' 2393 Salt Creek Highway (5260U' PO. Box 3258' CaWr, WJ82!02 Tbtl Free 888.235.0515 ' ( '?35.0515 ' Fax 302234.1639 ' casper@energy4' 7m' wwuenergya0'comI t t Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines 1st Quarter 2007 Environmental Air Sampling c07040193-006 BHV-Blank Report Date: 05/09/07 Collection Date: 0410il07 DateReceived: 04104107 Matrix: Fitter I Analyses Result Unlts Qualifiers RL MCL/QCL Mathod Analysis Date, By I I I I I I I I I I t I RADIONUCLIDES - TOTAL Lead 210 Radium 226 Radium 226 precision (*) Thorium 230 Uranium, Ac'tivity ND 1.5 0.9 ND o.4 2.0 0.4 0.4 o.4 pCi/Filter pCilFilter pCi/Filter pCi/Filter pCi/Filter NERHL-65.4 ES03.0 E903.0 E907.0 sw6020 04116107 12:00 / plj 04119107 10:03 / crw UngnT 10:03 / crw 04113107 15:00 / dmf 0il1AA7 20:42 I aln Roport RL -Analyte reporting limit. Definitions: eCL - euality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit.I I T r ac I<#CO7O40 1 93 Pag e EfFEf{,i!",?Ef{??*!i!{E;?'iiqJ[95;[ #gg-:#';9f8;d;!,,f:'n'fi!;,fr:#:ib[:,i5tr' Client: Project: QAIQC Summary Report Denison Mines 1st Quarter 2007 Environmental Air Sampling Report Date: 05/09/07 Work Order: C07040193 I I I I I I I I Analyte Result Unlts RL %REC Low Limit Hlgh Limit RPD RpDLimit eual Method: E903.0 Sample lD: C07040193-006AMS Radium 226 Sample lD: C07040193-005ADUP Radlum 226 Sample lD: MB-RA226-2000 Radium 226 Sample lD: LGS-RA226-2000 Radium 226 Sample Matrix Spike 54.9 p0i/Filter Sample Duplicate 8.05 pci/Filt€r Method Blank ND pCt/L Laboratory Conlrol Sample 12 pCi/L Run: B ERTHOLD 7 7 O _AT 0412A a4 70 130 Run: BERTHOLO 77 0 _07 0412A 48 Ru6: BERTHOLD 77 O *07 0412A Run: BERTHOLD 77 0 _07 04 12A 70 't30 0.20 0.20 0.2 o.20 Batch:'14080 04/19/O7 10:03 o4t19l07't0:'o3 56.5 0411910713:22 o4l19l07 15:47 I I I I Method: E907.0 Sample lD: LCS.R82505 Thorium 230 Sample lD: C07040032.002ADUP Thorlum 230 Sample lD: G07040032-003AMS Thorlum 230 Sample lD: MB.R82505 Thorium 230 Laboratory Conlrol Sampte 3,90 pCuFllter Sample Duplicate 4.35 pCl/Filter Sample Matrix Spike 44.6 pci/Filter Method Blank ND pCi/Filter Runr EGG-ORTEC_070413A80 70 130 Run: EGG0RTEC_070413A Run: EGG.ORTEC-07041 3A 86 70 130 Run: EGG-ORTEC 070413A 0.20 0-40 0.40 o.2 8.3 Batch: 14080 04113/07 15:00 04/13/07 15:00 30 04/13107 15:00 O4l13tO7 15:00 Method: NERHL-654 I ::r*J',' co7o4o'e34o6AMs Sample tD: G07040'!93-006AMSD I Lead210 t Sample lD: MB-R8272e Lead 2'10 I Sample lD: LGSf,,8272e Lead 210 I I Sample Matrix Spike 215 pCi/Filter Sample Makix $plke Duplicate 202 pCi/Fllter Method Blank ND pCi/Filter Laboratory Control Sample 36.2 pCi/Filter 1301051.0 1.0 Batch:14080 Run: PACMRD 3100TR_0704'|6B O4l1Al07 1Zi0O Run: PACI(ARD 3100TR_0704168 O4116lO7 12:OO 99 70 r30 6.4 30 Run: PACKARD 3100TR_0704168 A4116107 12:O0 Run: PACKARD 3100TR_0704168 A4lftl0l 12:00 100 70 1301.0 l:l1ffi.eportinsrim* I ND - Not detected at the reporting limit. TracR#.CO7O4O 1 93 Page 12 EfFTf{,i,lf,?Ef{ff''e;.;!fi"".'f,f1i}?:iflWJ.:ffiL,#Ef,v1#-,,f;;f:.ff;!,itr' QAIQC Summary Report Client: Denison Mines Project 1st Quarter 2007 Environmental Air Sampling Report Date: 05/09/07 Work Order: C07040193 t l' I I I I I I I I I T lr lr lr lr lr lr li Analyte Result Units RL %REC Low Llmit High Limit RPD RPDLimit Qual Method: Sample lD: Uranium Sample lD: Uranium Sample lD: Uranium Sample lD: Uranium sw6020 MB-14080 LCS-14080 c070401s3-001AMS c07040{93-001AMSD Method Blank ND mg/filter Laboratory Conhol Sample 0.0542 mg/fllter Sample Matrix Spike 0.151 mg/fllter Sample Maflx $pike Duplicate 0.149 mg/filter Run: ICPMS2-C_070412A Run: |CPMS2-C;070412A75 125 Run: ICPMS24_070412A 75 125 Run: ICPMS2-C_07O412A 75 125 Batch: 14080 Ml12lO7'19:45 04112107 19:49 04112t07 20;A1 04112107 20i1s 20 6E-0s 0.00030 0.00030 0.00030 ''t.5 108 114 112 Qualifiers: RL - Analytra reporting limit.ND - Not detected at the leporling limit. Track#Co7O4O193 Page 13 ENERGYLABaRATOREa NC. . z3e3sattcreekHlg^Qway(s260!1, po. Boxszle , casper, waz60zTottFree&a8.p3s.05t5 . ,. '4ss.osrs . rax soi.isi.i&i 7r)liiidriiisyi tm. wwwenergylab.com I I ld ilfi ilri ll$ :81 5 iEl* € :El"s ;- l*sI!,- tEs g I c->.oil;p I IIETE fl5 r# *Iee *;lei€ ill€s E'19.t -.J:= -E ilEg E llSE€ IIEEE J "-.3 .b*l6i=;IEOE ilel F ilsfEE,l'c.a E d$$$ll Ul'{: (lJl:i slg[ ] l=o!IEI(UIEsEI i.2'a, lEt aF};E eoap> ts c .EIlfI E lt {t ]E iH JErg IE r* iE Ifr IE IEtr l rElre I tE I'z I,E I IaI l"l I H ID E(u\ ,\'it pi .0 \n -> Nt\t\ ,\t s. t::rOL5()Eo- o'{Er2,iE\ a Ztto.E HE )-*l Gcr.Q orAz c AHEo-9 gE OA- AEfe-Ecd€ r.a? P.}? PIE E -s€ l5d.n (M) punoJBurnl HSnu ri' srJo- q ru 5iEU Jaqlo ^BsseolE- Xuo[ela6€nspllosFllogta1effi.r;p IOgnSnitV:Ed[1a1du.reg kst€uleluoc ro JoqujnN = ,;vt\ \i- --i,ul:0" "f!-;-.d) rfrs: Eo* o I (}.Eo. !,#trq> 3goEi;Jc.= J-9 YE n.sP <(o= JCg GIEe < I.L Es.ESE g*H nE-9 (JBPS b,"-f, 2 I II Eo tr TLF tsLa-ob#(Lo iioIrE .gacrotr.Eoo.oE co=o8E () EEfig(5tr=(f, ENERoYLAEoRAToREglltg:_,_2393saltcreekHighwaypz60t), p.o. Boxazis . casper; twez60ero// Free 888.235.05ts . { 'iso,osro-.-rai ibi:ii;:i63i :b[riii6*i,i6i" tm. wwwenergytab.com Period: January 1, 2oo|through Aprir2,2007 (1steuartcr2007) BHV-I on stream 06 Filler Start BHV€ on slream % BHV-s on stream % Filtsr Page I ]t'- 2 3 4 5 6 7I I t0lt l2 I I 9s.8% s8.7% Stop Stop Stop Slop Slop BHV.1 Starl Tolal Volurne: TotatTotal Total Volums: Total Totat Total Volume: 4.26E+06 4.61E+06 Loading,Per Cenl On 4.68E+06 Loading, PerCBnt Filter ri 6 ]10 BHV.4 Start 2t ) It 1 98.69'o Stop BHV,5 TolalVolumB: 4.7SE+06 7737434 1137428 7737422 7737417 773?407 77J7405 773J898 77)5892 7'135881 7715880 7735875 08-Jan-07 lS-Jan-07 22'Jan-07 29.Jan-07 05-Feb-07 l2-Feb.07 l9-Feb47 26.Feb.07 05-Mar.07 l2-Mar0? 20.Mar-07 8-Jan.07 I S-Jan-07 22-!aa-07 29-!an-07 5-Feb-07 l2-Feb-0? t9-Feb-07 26.Feb-0? 5.Mar.07 l2-Mar-0? 20-Mar-07 26-M^r-0'l 2175.'l 2345.0 25 t0.8 2680.2 2849_9 30 16.7 ll8l.2 335 l_4 35 t 6.5 37A4.6 3789.7 3956.2 10,587,425 t0,639,002 t0,424,638 10,648,43 I r0,669,80s t0,457,276 | 0,415,587 10,545,67i1 10,266,J45 l l,635,129 5,262,305 17.0 37.0 37.0 3?.0 37.0 16.9 36.9 16.9 16.6 16.4 36,4 #Sta(Total T-otal Loading, per Cent1 6 ll t t37439 7737433 7737427 7737421 7737416 7737406 7737404 7735A97 i7735891 | 77s5886 I 77s587s Iztssaru Ittssasz I 0l-Jan-07 08-Jan-07 l5Jan-07 22-Jan-OT 29Jan-07 05-Feb-07 12-Feb"Ol 1g-Feb-02 26-Feb-07 05-Mar{7 1z-Mar-O7 20-Mar-07 264naro? uu-Jan"07 1 s-Jan-07 224an-Al 29-Jan.07 05-Feb-07 12-Feb.0Z 1g-Feb-07 26-Feb-o7 05-Mar-07 '12-lllar.O7 2O-Mar47 2GMar07 02-Aar-fl7 I 4.6St31 I a.oezo 4.6873 5,0163 4.7258 4.7560 4.6852 4.6915 4.7725 4.704s I 4.8474 I 4.7400 I 4.8s24 I I 4.5522I a.ssss I a.sess I a.ssoo 4.5733 4,5373 4,5375 4.4949 4.5049 4.5053 4.4798 4.4721 4.4925 u.'1409 0.3487 0.1505 0.4863 0.1525 o.2187 0.1477 0.1966 0.2676 0,1 9S6 0.3676 0.2679 0.3599 1988.0 2156.3 2324.3 2494.1 2661,6 2831.6 2999.8 3165.3 3332.s 3497.2 3685.3 3837.2 4AO4 n 1U4i..9 1988.0 2156.3 2324.3 2494.1 2661.6 2831.6 2Sgg.8 3165.3 3332.3 3497.2 3685.3 3837 ' 8407.2 10098.6 r0080.0 r0 I 86.8 10051.6 l0 r95,8 1009 1.4 9930.6 10020.0 989 1.0 I t289.0 9t I t.6 10012.2 8,689,387 10.580,539 10,561,051 10.672,948 10,533,391 10,682,378 10.544,420 10,376,401 10.469.814 10,250,999 't 1,635,947 9,391.629 10-319 CO7 I U.0162I o.osro I o.oros 0.0456 0.0145 0.0205 0.0140 0.0189 0.0256 0.O195 r 0.0316 I 0.o2ss I o.oaac I I 83.4y6I no.z"r, J 1@.0%I rct.'t.t"I gg.to/" 101.1"/n 100..1o/o 98.5% 99.4% i 9s.1% I e8.o% I 10s.5% Iee3% I J6.5 37.0 37.O 3?.0 37.0 37.O 35.9 36.9 36.9 35.6 16.4 36.4rolals I sl f-ZTAA6-f 4.519608 BHV-4 on s(ream %97 ,4Xoo..o I J..r4,/u6,812 J 0.0244 |.€8-5rl:jE3- 08-Jan-07 15-Jan-07 22-Jan-O7 29-Jan-Ol 05-Feb-07 12-Feb-Ol 19-Feb-07 26.Feb-07 05.Mar47 12-ltaF0l ?o-Mdr-o7 1s-Jen.o7 22-J*vO7 29-Jan-O7 0SFeb-o7 12-Fsh,07 '19-Feb.07 28-Feb-07 05-tutar{7 12-Mat-07 20-Mar-07 26-tr/,a*O? 10,545,335 8,922,202 10,173,813 10,628,944 10,685,521 10,357,593 10.549.435 10.478,711 10,278,360 11,676,146 9,108.383 ::i Totat Totat Loading, per Cent t I ) I t tJr43t I ttn+ttI 773742s I nszan I n37413 773740A 7737402 7735895 7735889 7735884 7735877 7735872 7735865 Ul.Jan-Oz 08Jan-07 f5-Jan-07 22-Jan-O7 29-Jafl-O7 05.Feb-07 1%Feb-07 19-Feb-07 26-Feb-07 05-Mar,07 1z-l,iaF|7 20-MabO7 2*Me?-n7 (}u-Jan-o7 15-Jan-07 22-Jan-07 29-Jan-07 05-Feb-07 12-Feb.O7 19-Fets07 26-Feb-07 05-Mar-07 1Z.lular-}? 20-Mar-07 26-Mar-07 02Aor47 4.8583 4.7995 4.6638 4.7513 4.6712 4.6677 4.6378 4.6135 4.7548 4.5239 4.7489 4.7043 a tara 4.5522 4.5349 4.524s 4.5459 4.5653 4.5483 4.5465 4.5008 4.5293 4.4999 4.4930 4.4770 4.4968 0.1061 0.2646 0.1 3S3 0.2054 0.1oss 0.1.t 94 0.0923 0.1127 0.2255 0.1240 ) 0.2sse I 0.22?3 I 0.0s60 I 1964,5 2133.1 230't.1 24ea.1 2637.4 2807.o 2972.1 3140.6 3308,7 3473.7 s862.3 380s,8 3979.2 1E24.9 1904.5 2133.1 23A1.1 2468.1 2637.4 2807.0 2972.1 3140.6 3308.7 3473.7 3662.3 3809.8 8t76.6 t0t t9.6 10080.5 t0015.8 r0l6t.6 t0t77.z 9906.0 10t08-2 roos6.6 e8e8.8 II r3r4_2 I 88s2.4 I t0t62.8 I 8,657.760 10,602,541 10.561,680 10,453.787 10,646.54s 10,662,890 10,350.697 10,s61,974 10.539,4rM 10.259,083 ,1.661,922 9.124,463 10 aal aae u.u] z3 0,0250 0.0132 0.0196 0.0099 0.0112 0.0089 0.0107 o.0214 0.0121 0.0218 0,0249 0.00e2 6J,1Yo 100.4% 100.0% W.4c/o 100.8% 1Ql.0o/o 98.3% 100.3% 100.10h 98.2% 98.2% 102,SYo 100.8% 36.5 .]7.0 37.0 37.0 17.0 17.0 36.9 36.9 16.9 36.6 36.4 36.4 16.4 Totals el T -Zlsa-4.683523 0.0154 98.7%36.8 Trac k#Co7o4o 1 93 page 15 t ENEFQY LABORATORTES, tNC . p0O3 Satt Creekro// Free 88&23s.0sts . { 6as.oits-.-Fai ibi:;i;vc. . zss? Salt Creek Hiohway (SZ60U . RO. Box 325g , Caspe4 W.AZ60Z05ts ' Fax J0zea4.t6bs , b[spii6ei6rgyl{" -,i: rwwenersytab.com To// Free 88&23S.0S\S . I /eek Period: January 1,2007 through April 2, ZO07 (lsleuarter 2002) BHV-6 on stream yo s8.8% Stop Slop Paga 2 Filter BHV.6 Start Total Volume: Total 4.76E+06 Loading,Total Time Per Cenl 3 ri 8ll2 13 l"n ott"*'-'""1;97.8n/o Stop On I I I t T T 7737430 77374?4 7737418 7737414 n37409 7737401 7735994 7735888 7735883 7735878 7735871 08-Jan-07 15-Jan-07 22-Jan-A7 29-Jan-07 0SFeb-07 12-F6b-O7 19-FeF07 26-Feb-07 05-Mar{7 12-tlrar-O7 2A-Ma?OT lSJan-o7 22-Jar07 29'Jan-07 05-Feb-07 1 2-Feb-07 1g-Feb-07 26-Feb-07 05-Mar-07 12-Mar-01 20-tu1ar.07 26-Mar-07 1889.2 2057.2 2224.2 2393.5 2563.3 2728.4 2896.9 s064.S 3230.0 s418.8 3566.9 3735.1 10,s78,O24 '10,560,423 10,621,400 ',0,645.288 10,671,062 10,352,578 10.560,720 10,531,254 10.265.30r 11,679,857 9,156,622 37.O 37,o 37.0 37.o 37.0 35.9 36.9 36.9 36.6 36.4 36.4 36.4 09-Jan-07 '15-Jan-07 z2-Jan-Ol 29-Jan-07 05-Feb-07 1 2-Feb-07 19.Feb-07 26-Feb-07 05.Mar-07 12-Mat4t 20-Mar-07 15-Jan-07 22-Jan-O7 29-Jan-07 05-Feb-07 12-Fe6-07 19-Feb-.07 26-Feb,07 05-Mar-07 1z-Ma'.07 2Gittat47 28-Mar"07 Track#CO7040 1 93 Pas e 16 t T ENEEGY LAB0BATOBIES, tNC. . 2393 salt creek ltlglrway (sz60t) , p.o. Bor 32sB , caspet; wy Ba60zTolt Free 8au.z35.0sts ' {.' ?ss.osrs . rax soiii+.i67i :Giriideirliyii un. www.energylab.com I t I I t I T I I I Energy Laboratories, lnc. Glient Name Denison Mines Work Order Number C02040193 Login compleled by: Corinne W Shipping container/cooler in good condition? Custody seats lntact on shipplng container/cooler? Custody seals intact on sample botiles? Chain of custody present? Chain of custody signed when relinquished and received? Chain of custody agrees with sample labels? Samples in proper conlainer/botfle? Sample containers intact? Sufficlent sample volume for indicated test? All samples received within holding time? Container/Temp Blank temperature ln compliance? Water - VOA vials have zero headspace? Water. pH acc€ptable upon receipt? Adjusted? Sample Receipt Checktist Carrier name l{elt DFy_Air Date and Time Received: 4t4t2}0l09:30:00 Received by kh Reviewed by f-D"i."=-.- yes M Yes M Yes ! Yes Ml Yes M Yes Ml Yes Ul Yes M Yes Ml Yes M Yes M Yes n Yes n ruoI ruoI No! NoI tto D ruon Non tto I ttoI NoI ruoE No fl NoD Checked by NotPresant f NotPresent n NotPresent M N/A"C No VOA viats submitted Ul NotAppticabb E] t I I I I I I Contact and Corrective Action Comments: None -frack#co7o4o193 Page t I ENEBGY LABOFATOBIES, lNC. '2393 Salt Creek Highway (5260t) . PO. Box 5258 , Caspeq Wygp602 Toll Free 888.23i.05t5 ' ( ;se0sfi , Fax g1z.2g4.nbe .'cisperaienergyiq- ,m; www.ifriibytat.ni t Date: 09-May-07 I I I Denison Mines Project:1st Quarter 2007 Environmental Air SamplingSample Delivery Group: C07040193 CASE NARRATIVE IHIS IS THE FINAL PAGE OF THE LABORATORYANALYTICAL REPORTo.RlGtNAL SAMPLE SUBMTTTAL(S) fj.:ll:xL*illflL";jgT'ff!3';ieen returned with the data packase. A copy of rhe submittar(s) has been incruded SAMPLE TEMPERATURE COMPLTANCE: 4,C (rz.C)I liffffilH;HilyHifi:ia?ifiil"iilT-H:i'nti:l"r;r.":ilg,:xxf,lLi.,si$ftHgf^Tlii","?fifl;,,,[:::f SOIUSOLID SAMPLES A', sampres reported on an as received basis unless otherwise indicated. PCB ANALYSIS USING EPA 505Data reported by ELI using.EPA method 505 reflects the resurts for seven individuar Arocrors. when the resurts for ariseven are ND (not detected), ttre samfre m""r* rpn ;;ilii#;;i;il for pcB monitoring. SUBCONTRACTTNG ANALYSISsubcontracting of sample 'nuty""" to an outside laboratory may be required. rf so, ENERGY LAB.RAT.RIES wirr utitizeH#ffiilt"Tfl','"J::i*i'"'iffi;;;;"ii;;'.tories roitnis i"-,ii"ll nnv such raborato,i""i"irr be indicated within the B^FNqH LABOMToRY LOCATTONS 9f1-! -_enerOV Laboratories, rn". _ b-niir-S", MfelFf - Energy Laboratories, lnc. _ ldaho"Filf". roeli-g - Energy Laboratories, rr". _'Cilff-tt"]inny'"erFn - Energy Laboratories, lnc. _ Helena trnreli-r - Energy Laboratories, Inc.'_ n"-oij;l;'aoeli-t - Energy Laboratones, lne. - College Station, TX CERTFICATIONS: USEPA: Wy00002: FL-D.OH-NELAC: Eg7641;Arizona:429699; California:02118CAoreson ; wy20o00 i ; urah; idi2;sds.E]'uiri;ll, 00057; washington : c 1 e03 ISO 17025 DISCLAIMER: The resurts of rhis Anarytical Report rerate onry to the items submitted for anarysis. ENERGY LABoRAToRlqs' LNC' - CASPER,WY certifies that certain method serections contained in lhis report meetrequirements as set forth ov tneauove-a";;;'#ils autnorities, Si,ril iirrrt ,.qr""i.J ov-il'"'liil1i, may nor be covered*,1s'ffi.TT[x11"[;i[i?,x,"Hfgij: H;1:[**tr,rffi;:l;;rr:*"houd becertiried in td;;;;r 5:t'fiJ:",1ffi":Jffiit"J!j[1to provide vou with this anatvticar service. For addirionar inrormation and services visir our The total number of pages of this report are indicated by the page number located in the lower right corner. I I T T T I I I t I I I T r ac kr*CO7O4O 1 gg F,age -+ o J Ioo)(U(L oit,El-oo* Equ2.PgoEOP!,E ETHorEEo GTOEi=fiho; -:G#tr8<aE6aa'aL(u(EE >€E6OEgLirB5€oE$-1o, CFtrE TEH-tr(OH lmnl t v N +it\\0 *\> N N ,t\s tri \ ( :!La ri !+MoI* EII.9 orlt/r]4.c.t5p= I s iE I EEg IcL.= c I nE fr l# FE* IE {, (IVD punorPurnlHsnu tJNrJ ,t$ + al .f,F 7J €-s81a I.r reqlo [ess8ole Xuo[qa6e^spltosFfios.rslEmJF g 6g4614y:edr{legurag k t^ 0s E'50" rI\.j..e0 irr-1sos E cr:co o oLoE#D oE oEiiJ-tJU TE neP <(E=JEs NE.O <o-l!E EE &tra coEO 8.Eo'o EEfig6M=o ld llgllEll o llsrl (glcIGlepIE.El*. ou l5n Eli tEI o-Ir 6 ('l6t ElsiB I.EE€ lE i$lf,bo IEE E IE88lo^>=tbh =Iro=l6r tloqIr-- X EEE E;.stl 6 L6E=ooPtr.:.E .E 5.EEOBgaH ;E,"8.flE t EEE *r"8 $EBfi#b Ef E '=o#Et o; r.8o$o '*g tE= IE Ee o Ec 6t E! ENEBGY LABORATOBIES, lNC. , 2393 Salt Creek Highway (8260/) , PO. Box 3258 , Casper; WY82602 Toll Free 888.235.05/5 . 307.235.05/5 . Fax 307.234.1639 . casper@energylab.com . wwwenergylab.com LLD's are from Regulatory Guide 4.14 * Ellluent Concentration provided by Denison Mines I I I T I I I t t I I I I I I I I T HIGH VOLUME AIR SAMPLING REPORT CLIENT: DENISON MINESREPORTDATE: August 4,2007 PROJECT 2007 Environmental Air Sampling SAMPLE ID: BIIV-I Quarter/Date Sampled Air Volume Radionuclide Concentration pCi/mL Error Estimate uCi/ml, L.L.D. pCilmL Effluent Conc.* trCilml . 7o Eflluent Concentration c07040r93-001 First Quarter 2007 Air Volume in ml.r l.3lE+l I nat[J 2.23E-t6 N/A 1.00E-16 9.00E- r 4 2.48F,0123oThr.638-16 3.758-t7 1.00E-16 3.00E-4 5.45E-01,ruRa < I.00E-16 N/A t.00E-16 9.00E-3 < l.llE-022roPb1.658-r4 4.398-16 2.00E-15 6.00E-3 2.75E+00 c07070206-001 Second Quarter 2007 Air Volume in mLs 1.25E+l I ndu 3.358-16 N/A 1.008-16 9.00E-14 3.72F.0123oTh1.34E-16 4.338-17 1.00E-t6 3,00E-14 4.488-01zuRa1.368-16 7.07F.-17 r.00E-16 9.00E-13 l.5lE-022roPb1.78E- l4 6.698-16 2.00E-r5 6.00E-13 2.978+00 -2- TRACK# C07070206 ENERGY LABORATORIES, lNC. ' 2393 Salt Creek HEhway (82601) "P.O. Box J2i8 . Caspil WA2602 Toll Free 888.235.0515 " 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com ,www.ehergylab.com I T t Glient: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter 2007 Environmental Air Sampling co7070206-001 BHV.1 Report Date: 08120107 Collection Da!.p; 07 tO2t07 DateReceived: 07 ti\tl7 Matrix: Filter Analyses Result Unlts Qualifiers RL MCU QCL Method Analysls Date / By 2.0 0.4 0.4 0.4 I t T t t I I I I I I I I I T RADIONUCLIDES. TOTAL Lead 210 Lead 210 precision (r) Radium 226 Radium 226 precision (r) Thorium 230 Thorium 230 precision (r) Uranium, Activity 2230 pCi/Filter 46.4 pCi/Filter 17 pCi/Filter 5.3 pCi/Filter 16.8 pCi/Filter 3.6 pCi/Filter 4'1.9 pCi/Filter NERHL€54 NERHL-65.4 E903.0 E903.0 E907.0 E907.0 sw6020 07130107 10:52 t dm 07130107 10;52 / dm O7D2l07 01:26 / crw 07122107 01:26 / crw 07118107 15:00 / dmf 07118107 15:00 / dmf 0711410713:56 / bws Report Deflnltions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. -3- TRACK# C07070206 ENEBGY LABOBATOBIE9, lNC. ' 2393 Salt Creek HEhway (52601) . P.O. Box 32SB . Caspil WY 82602 To//Free888.235.05/5 ' 307.235.05/5 ' Fax 307.234.1639 , casper@energylab.com .www:eitergylab.com I I I I t I t I I t I I I I T I I t LLD's arc from Regulatory Guide 4.14 ' Efflueut Concentration provided by Denison Mines Quarter/Date Sampled Air Volume Radionuclide Concentration pCilmL Error Estimate pCi/mL LL.D. pCi/mL Effluent Conc.* uCi/mf . 7o Effluent Concentratiou c07040193-002 First Quarter 2007 Air Volume inml- 1.35E+11 n",u 1.40E-16 N/A 1.00E-16 9.00E-14 1.56E-01230Th1.00E-16 N/A 1.00E-16 3.00E-14 < 3.33E-01226Ra1.00E-16 N/A 1.00E-16 9.008-13 < l.l lE-022l0Pb1.63E-14 4.31E-16 2.00E-15 6.00E-13 2.728+00 c07070206-002 Second Quarter 2007 Air Volume inml. 1.35E+11 *tu 1.04E-16 N/A 1.00E-r6 9.00E-14 1.15E-0123oTh< 1.00E-16 N/A 1.00E-16 3.00E-14 < 3.33E-01226^t(a < 1.00E-16 N/A 1.00E-16 9.00E-13 < l.llE-022roPb1.36E-t4 5.94E-16 2.00E-15 6.00E-13 2.278+00 -4- TRACK# C07070206 ENEBGY LABORATOHF_S! INC '2393 Salt Qr99( Highway (5260/) . PO. Box 3258 ' Caspe4 WY82602 To//Free888.235.05/5 ' 307.235.0515 'Fax307.234.1639 , casper@energylab.com,www:ehergylab.com Client: Project: Lab lD: Client Sample lD: LABOMTORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter 2007 EnvironmentalAir Sampling c07070206-002 BHV-2 Report Date: OB|2O|OT Collection Date: O7 lo2tol DateReceived: 07 l05l07 Matrix: Filter Analyses Result Units Qualifiers RL MCUQCL illethod Analysis Date / By RADIONUCLIDES . TOTAL Lead 210 Lead210 precision (*) Radium 226 Radium 226 precision (r) Thorium 230 Thorium 230 precision (t) Uranium, Activity 1840 pCi/Filter 42.4 pCi/Filter 7.8 pCi/Filter 4.1 pci/Filter 6.0 pCi/Filter 2.3 pCi/Filter 14.0 pCilFilter 2.0 o.4 0.4 0.4 NERHL€54 NERHL654 E903.0 E903.0 E907.0 E907.0 sw6020 07130107 10:52 / dm 07130107 10:52 tdm 07122107 02:27 I crw 07DA07 02:27 I cNv 07118107 15:00 / dmf 07118107 15:00 / dmf 07114107 l4:0'l / bws Report Definltions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. -5- TRACK# C07070206 ENERGY LABORATORTES, tNC. ', 2393 Salt-Qrggl ltlqtlway (s2601) ' PO. Box 3258 Caspet; wY 82602 rZiiFiiiaaE.iis.dsri: ib-z.iii.-oits-: Fax J0z.2s4.filao "'cisper@energytab.com wwwenergvtab.com I T I I I I I I I I I I I I LLD's are from Regulatory Guide 4'14 * Efrluent Concentration provided by Denison Mines I I I I Quarter/Date Sampled Air Volume Radionuclirle Concentration pCi/mL Error Estimate uCilrml, L.L.D. pCi/mL Effluent Conc.* uCi/mL 7o Effluent Concentration c07040193-003 First Quarter 2007 Air Volume inml 1.33E+l l *tu 7.08E-16 N/A 1.00E-16 9.00E-4 7.86E-01 230Th 2.81E-l6 4.26E-17 1.00E-16 3.008-4 9.37E-01 226Ra < 1.00E-16 N/A 1.00E-16 9.00E-J < l.1lE-02 2l0Pb t.54E-74 4.22W16 2.00E-15 6.00E-3 2.5T8+00 c07070206-003 Second Quarter 2007 Air Volume inml 1.36E+11 ""tU 9.41E-16 N/A 1.00E-16 9.00E-14 1.05E+00 23016 3.208-16 6.96E-17 1.00E-16 3.00E-14 1.07E+00 226Ra 1.99E-16 8.53E-17 1.00E-16 9.00813 2.2rE-02 2loPb 2.568-14 8.20E-16 2.00E-15 6.00E-13 4.268+00 -6- TRACK# C07070206 ENEBGY LABOBATOHE-A lNC. '2393 Salt Creek Highway (s260t) " p.O. Box J2SB " Caspq WyA260zro//Free888.235.05/5 ' 307.235.05/5 ' Fax 302.2a4.b3e :-dipiideiirsyEi.boi:*,riiiiiibiiub.,ro, I I I Glient: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter 2007 Environmental Air Sampling c07070206-003 BHV.4 Report Date: OB|2O\OZ Collection Date: Ol l02lO7 DateReceived: 07 l05lOZ Matrix: Filter Analyses Result Units Qualifiers RL MCU QCL Method 2.0 0.4 0.4 0.4 I I I I T T I t I T t I T Analysis Date / By RADIONUCLIDES . TOTAL Lead 210 Lead 210 precision (*) Radium 226 Radium 226 precision (r) Thorium 230 Thorium 230 precision (r) Uranium, Activity 3480 pCi/Fitter 57.7 pCi/Filter 27 pCi/Filter 6.4 pCi/Filter 43.5 pCi/Filter 5.5 pCi/Filter128 pCi/Fitter NERHL€54 NERHL-65-4 E903.0 E903.0 E907.0 E907.0 st /6020 07130107 10:52 t dm 07130107 10:52 t dm 07122107 03,,21 tcruv 07122107 03:21 I crw 07118107 15;00 / dmf 07118107 l5:00 / dmf 07114107 14:06 / bws RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit.I I -7- TRACK# C07070206 ENERGY LABOEATORIF\ -lNC ' 2393 Salt Creek Hrghway (82601) . PO. Box 3258 ' Caspet; WY A2602 To// Free 888.235.05/5 ' 307.235.0515 ' Fax 307.234.1639 . -casperQienergylab.com . wwweheigytab.con LIJ)'s are from Regulatory Guide 4.14* EftIuent Concentration provided by Denison Mines I I I I I I I I I I t I I I t I I T Quarter/Date Sampled Air Volume Radionuclide Concentration pCi/mL Error Estimate uCihnl- LL.D. pCi/mL Effluent Conc.* uCilmL o/o Effluent Concentration c07040193-004 First Quarter 2007 Air Volume inml 1.35E+l I N"U 1.08E-15 N/A 1.00E-16 9.00E-14 1.20E+002r0Th8.22E-16 4.748-17 1.00E-16 3.00E-14 2.74E+00226Ra2.268-t6 2.898 17 1.00E-16 9.00E-13 2.518-022roPb1.628-14 2.278-16 2.00E-ls 6.00E-13 2.70E+00 Quarter 2007 Air Volume in 1.36E+l I 1.23E-r6 1.00E-16 2.128-14 -8- TRACK# C07070206 ENEfrOY LABORATOEIES! INC " 2393 Sall Creek HiThway (82601) " PO. Box 3258 , Caspet WY82602 To//Free888.235.0515 ' 307.235.05/5 " Fax 307.234.1639 , casper@energylab.com'wwaenergylab.com I I I I Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter 2007 EnvironmentalAir Sampling'c07070206-004 BHV-5 Report Date: OBl20l07 Gollection Date: 07 102107 DateReceive d: 07 105107 Matrix: Filter Analyses Result Unlts Qualifiers RL MCUQCL Method Analysls Date / By 2.0 0.4 0.4 0.4 I t I I T I I I T I RADIONUCLIDES . TOTAL Lead210 Lead 210 precision (*) Radium 226 Radium 226 precision (r) Thorium 230 Thorium 230 precision (r) Uranium, Activity 2880 pCi/Filter 52.6 pCi/Filter 65 pCi/Filter 9.4 pCi/Filter 111 pCi/Fitter 9.4 pCi/Filter 210 pCUFilter NERHL€5.4 NERHL-654 E903.0 E903.0 E907.0 E907.0 sw6020 O7l3OlO7 10:521 dm 07130107 10:52 t dm 07122107 04:28 I crw O7l22lO7 04:28 I crw 07118107 15:00 / dmf 07118107 15:00 / dmf 07114107 14:11 / bws T I I T Report Definltions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit -9- TRACK# C07070206 ENEBGY LABORATORIES, lNC. " fi9e Salt Creek Highway (52601) , P.O. Box 3258 , Caspet WY 82602 To//Free888.235.05/5 ' 307.235.05/5 , Fax 307.234./639 " casper@energylab.com'www.eizergylab.com I I I I I I t I T t I I I I I I I T HIGH VOLUME AIRSAMPLING REPORT CLIENT: DENISON MINES REPORTDATE: August 4,2007 RELEASE NO. 2007 Environmental Air Sampling SAMPLE ID: BIry.6 Quarter/Date Sampled Air Volume Radionuclide Concentration pCi/mL Error Estimate rrCi/mL L.L.D. pCi/mL Eflluent Conc.* uCi/mL 7o Effluent Concentration c07040 I 93-006 First Quarter 2007 Air Volume in ml.s 1.35E+l I n",u 5.36E-16 N/A t.00E-16 9.00E-14 5.95E-0123oTh 3.1 5E- 1 6 3.1 lE-t?1.00E-16 3.00E- l4 1.05E+00226Ra< 1.00E-t6 N/A 1.00E-16 9.00E- l3 r.t rE-022roPbr.438-14 z.t4E-t6 2.00E-15 6.00E-t3 2.39E+00 c07070206-00s Second Quarter 2007 Air Volume in ml-r 1.36E+t I nat[J 1.08E-15 N/A 1.00E-16 9.00E-t4 1.20E+00,roTh 2.18E-16 5.748-t7 1.00E-16 3.00E-14 7.288-01226RaL54E-l6 7.42E-t7 1.00E-r 6 9.008-t3 t.72E-022roPb2.048-14 7.24E-t6 2.00E-15 6.00E-13 3.41E+00 LLD's are from Regulatory Guide 4.14* Eflluent Concentration provided by Denison Mines -1 0- TRACK# C07070206 ENERGY LABOBATORIES, lNC. " 2393 Salt Cregf Hrghway (52601) , P.O. Box 32i8 , Caspet WYA2602 To// Free 888.235.05/5 ' 307.235.0515 ' Fax 307.234.1639 , casper@energylab.com . wwweitergytab.com t t I Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter 2007 EnvironmentalAir Sampling c07070206-005 BHV.6 Report Date: OBl2ltOT Collection DafB; A7 fi2lOl DateReceived: 07 to5l07 Matrix: Filter Analyses Result Unlts Qualifiers RL MCU QCL Method Analysis Date / By 2.0 0.4 0.4 0.4 I I I T I I t I I I I I t I I RADIONUCLIDES . TOTAL Lead 210 Lead 210 precision (t) Radium 226 Radium 226 precision (r) Thorium 230 Thorium 230 precision (*) Uranium, Activity 2780 pCi/Filter 51.7 pCi/Filter 21 pCi/Filter 5.7 pCi/Filter 29.7 pCi/Filter 4.7 pCi/Filter 147 pCi/Filter NERHL€5.4 NERHL€5-4 E903.0 E903.0 E907.0 E907.0 sw6020 07130107 10:52 / dm 07130107 10:52 t dm 07122107 05:28 / crw 07122107 05:28 / crw 07118107 15:00 / dmf 07118107 15:00 / dmf 07114107 14:38 / bws Report Definltlons: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. -L1- TRACK# C07070206 ENEBOY LABOBATORIES, lNC. " 2393 Salt Creek Highway (8260/) . PO. Box 3258 ' Casper W92602Toll Free 888.235.0515 ' 307.235.0515 " Fax 307.234.1639 , 'casperGienergylab.con: www.ihergylab.con I I I Client: Project: Lab lD: Client Sample lD: LABOMTORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter 2007 EnvilonmentalAir Sampling c0707020G006 BHV-Blank Report Date: 08l20tOZ Collection Date: 07 tO2lll DateReceived: 07 l05l07 Matrix: Filter Anaiyses Result Units Qualifiers RL MCU QCL Method Analysis Date / By 2.0 0.4 0,4 0.4 t t I I t I I I I I I I I RADIONUCLIDES . TOTAL Lead 210 Radium 226 Thorium 230 Uranium, Activity ND pCilFilter ND pCi/Filter ND pCi/Filter 1.7 pCi/Filter NERHL6S-4 E903.0 E907.0 sw6020 07130107 10:52 tdm 07122107 06:29 / cnrrr 07118107 15:00 / dmf 07114107 14:43 / bws t I Report Definltions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detecled at the reporting limit. -t2- TRACK# C07070206 ENEBGY LABOBATORIES, INC ' 2393 Salt Creek Htghway (82601) , PO. Box 3258 " Caspe4 W 82602 To// Free 888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 . casper@energylab.com " wwuenergylab.com QA/QC Summary Report Client Denison Mines (USA) Corp Project: 2nd Quarter 2007 EnvironmentalAir Sampling Report Date: 08120107 Work Order: C0707O2Oi I I I T I I T I I T Method: E903.0 Sample lD: C07070194-00iAMS Radium 226 Sample lD: C07070194-003ADUP Radium 226 Sample lD: MB-M226-2180 Radium 226 Sample lD: LCS-M226-21A0 Radium 226 Sample Matrix Spike 57.0 pCi/Filter Sample Duplicate ND pCi/Filter Method Blank ND pCi/L Laboratory Control Sample'12 pCi/L Run : TENNELEC-2_OZ 0t 1 SA94 70 130 Run : TEN NELEC-2_07 Ot 1 SA Run: TENNELEC-2 _Ot 07 1 SA Run : TENNELEC-2_O7 Ot 1 S A70 130 0.20 0.20 Batch: 15182 07121107 13:22 07121107 16:23 756.3 07122107 09:30 07122107 11:31 0.2 Resurt Units RL %REc Low Limrt High Limrt RpD RpDLimit Qual Method: Sample lD: Thorium 230 Sample !D: Thorium 230 Sample lD: Thorium 230 Sample lD: Thgrium 230 E907.0 c07070206-O03AMS c07070206-003AMSD MB-R87433 LCS-R87433 Sample Matrix Spike 121 pCi/Fitter Sample Matrix Spike Duplicate 111 pCi/Filter Method Blank ND pCi/L Laboratory Control Sample 4.2OpCVL 0.40 Run: EGG-ORTEC_07071 BC70. 130 Run: EGG-ORTEC_07071 8C70 130 8.1 Run: EGG-ORTEC_07071 BC Run: EGG-ORTEC_07071 BC70 130 Batch:15182 0711810715i00 07118107 15:00 30 0711810715:00 07118107 15:00 I Method: NERHL-65-4 Sample lD: C07070194-O02AMS I r-eau zro Sample lD: C07070{94-002AMSD I -:;: MB-PB-2io-0,36 Lead 210 I :*rjJ* Lcs'PB'2io'0r36 I I Sample Matrix Spike 547 pCi/Filter Sample Mahix Spike Duplicate 540 pCi/Filter Method Blank ND pCi/Filter Laboratory Control Sample 62.4 pCi/Filter 117 116 1.0 1.0 Run: PACI(ARD 31 00TR_07OZ1 8B70 130 Run: PACMRD 31 00TR_02071 BB70 130 1,3 Run: PACMRD 31 00TR_07071 BB Run: PACI(ARD 31 00TR_07071 8B70 130 Batch: 15182 0713010710:52 07RO|O710:52 't6.3 07130107 10:52 0713010710i52 1.0 I :J:llf;; reportins,imit - 13- TRACK# C07070206 T ND - Not detected at the repofiing limit. ENEBGY LABOBATORIES, lNC. " 2393 Salt Creek Highway (5260/) , P.O. Box J2i8 . Casper, Wy82602 To// Free 888.235.05/5 ' 307.235.05/5 , Fax 302234. tobs , cbsperaienergylai.*i: ***.iiiisiiab.'con Client: Project: QA/QC Summary Report Denison Mines (USA) Corp 2nd Quarter 2007 EnvironmentalAir Sampling Report Date: 08120t07 Work Order: C07070206 I I I I I I T t I t I t I I I I Method: Sample lD: Uranium Sample lD: Uranium Sample lD: Uranium Sample lD: Uranium sw6020 MB-l5182 LCS-{5182 c07070194-00tAMS c07070194-00tAMSD Method Blank ND mg/filter 6E-05 Laboratory Control Sample 0.0482 mg/fitter 0.0OO3O Sample Matrix Spike 0.0479 mg/fitter O.OOO3O Sample Matrix Spike Duplicate 0.0479 mg/filter O.OOO3O Run: ICPMS2-C_0ZOZl3A Run: ICPMS2-C_0Z0t1SA 75 12s Run: ICPMS2-C_070713A 75 125 Run: ICPMS2-C_070713A 75 125 Batch:15182 07114107 l'l:aa 07114107 11:49 0711410712:26 07114107 12:31 200.2 Resurt Units RL %REC Low Limit High Limit RpD RpDLimrt Quar I ffXffireporrinsrimit. T*-14- TRACK# C07070206 ND - Not detected at the reporting limit. ENEROY LABOBATORIES, tNC. . 2J93 salt cre.9f llgQway (s260/) . po. Box szs7 casper; wya2602To// Free 888.235.05/5 " 307.235.05/5 Fax 307.234.t039 'c;sp;iden;rgy/ab."bi: ***.ifiiiiiiab.ro, Laz.t"F #ffic*sE 6 6cf .9 oUrE cf,p= 5 TErE (J6- OEE*I i; glr 'E -g E- lE:85 lsd1ro tlvl, punoJBurnl Hsnu - -r"q;O rkseotp Xuogqa6efispllogfBtto6qeffir;f, Eg g 1g 1y1y:ed(l eJdureg Estsul4uoc ro JaqunN = E-{m tss x$} E.c!o-ou {? , cii U,CQ o ECL!toEL' 8E-!0)EiiJ E'= =6TEn#t sEu NE€<rtErFClEcLx&EN $E6s5E=@ - 15- l* [! EelHv.9l oruEl€ 3*13flr;.. loc ltrj I o.* tEt t::i ilEl ilEi -IEi EIEE8lE; Jv=ItE IE$t(,t IH€IsE glBriol .--gll o<tlt BlSgJI E.O196 lE,n, l'aE rlgE iturE Irlet; lEf ! lEi;I o.E -IEF itE 3lO Lls EloevtEs E(, ;q €o(, E ot,El:oos EEuEeP-oe OP-.=JE ETE eco -^(E: .g$ F*i -OlLol< E'ltrsltrE I(rEI >.8 l, EEfih&P =€ IoElrroloE IFE 'rr* | $fit H$ J ot -rl oo,o(L I II I I I I I T t t T I I I I I I I Iti ll# ll s llE ll.e il#Url ctrl 6?loit: rlEl9E liEItt 6tbg dEE ilEi[€ b IEE.IE Ptrr> ILL.loET.E Ol6ElegIt= IEE I E3!arar.Llt 6I;E:loolo ?I >O.l6:..lEor lE< , ldsll'tr.o I lf E I l*"" j lJ.c: EEioo;EC' !utE Io9: EH !Eo' =6'.E: I EEIo,l2 to.E .EF* ita:l)r Es E .E €ot E t rl o l,l q) E }E fH rg5E EEo E$ Et E#(rE bE JEoE Di?u -AtrE cfi I HH o!E(2t t\.- e, E oJ3. st ilts FE - 6 (El -.5",1thv.cl BEE I aE;l nE fr ln gEEIE Lo (lvJpunoJBurnlHSnU 9r-r Jsqto ^BsseotE X uopep6efi spllospgo$re1emJM E6g4gp1y:ed{lepureg E sJouleluoC Jo JaqunN = Erl 0o tss xstda ci d u.co o .9LCLEetr oE ogE,J L> =6'i'E o EEIg6E=o ENERQY LABORATORIES, lNC. , 2393 Salt Creek HEhway (5260/) , P.O. Box S2i8 Caspil WY 82602 To// Free 888.235.05/5 ' 307.235.0515 ' Fax 307.234. /639 , -casper@energylab.con ' wvtwehergylab.con Period: , April 1, 2007 through Juty 2,2001 (2nd euarter 2007) Total I I I I I Week BHV-1 on stream % Filter Start 91.40/o Stop BHV.l Start Total Volume: Total Page 1 4.40E+06 Loading, PerCent 4.78E+06 Loading, PerC€nt 4.81E+06 Loading, PerGent 4.81E+06 Loading, PerCent On _ 15_ TRACK# C07070206 BHV-2 on stream % BHV-4 on stream Yo Filter Start Filter 99.2o/o Stop Stop Stop Stop Stop BHV.2 Start Total Volume: Total Total Volume: Total Total Volume: Total Week Week 99.9% Stop Date BHV-4 Start Total Time Total Total BHV-5 on stream % Start Date 99.9% StopFilterWeek # BHV.s Start Date Gross Tare Time OnI 2 3 4 5 6 7 8 9 t0 u t2 l3 7735862 7735856 7735850 7735844 7735839 7735832 7735826 7735821 7735814 7735808 7735803 78t6497 7816491 2-Ap-07 09-Apr-07 l6-Apr-07 21-Apr-07 30-Apr-07 07-May-07 l4-May-07 2l-May-07 28-May-07 0,1-Jun-07 I l-Jun:07 I 8-Jun-07 25-lun-07 9-Apr-O7 l6Apr-07 23-Apr-07 30-Apr-O7 7-May-07 l4-May-07 2l-May-07 28-Mry-07 4-Jut-07 I l-Jun-07 l l8-Jun-07 | 25-Jun-0? I 2-ril-07 I | 4.s346 | 4.7388I +.ssoo 4.5533 4.6713 4.7127 4.6686 4.6964 4.6795 4.8618 4.6700 4.6767 4.7t20 4.4848 4.5288 4.4533 4.4734 4.4929 4.5230 4.4593 4.4E63 4.5191 4.522t 4.5239 4.4385 4.4300 0.0498 0.2100 0.3967 0.0799 0.1784 0. t897 0.2093 0.2r01 0.1604 0.3397 0.146t 0.2382 0.2820 3989.7 4t56.7 4320.3 4438.1 4608.7 4774.8 4942.7 5134.9 5280. I 5447.t 5614.6 5781.9 5951.0 Jy56.Z 3989.7 4t56.1 4320.3 4438.1 4608.7 4774.8 4942.7 5134.9 5280.t 5447.1 56t4.6 578t.9 I 20t0.0I roore.rI sssr.a I 7063.8 10217.2 9966.0 rca71.6 I 1535.6 8712.6 10020.6 10051.2 10036.8 r0148.4 2,077,465 10,496,931 10,324,056 7400,908 t0,725,753 10,441,6| 10,523,731 12,0s3,452 9,t03,723 10,385,3 l6 10,350,t06 t0,34s,263 10.460-293 0.0240 0.0200 0.0384 0.0r08 0.0156 0.0182 0.0199 0.0174 0.0 r76 0.0327 0.0t4t 0.0230 0.0270 19.9%36.5 37.0 37.0 37.0 37.0 17.0 36.9 36.9 36.9 36.6 36.4 16,4 36.4 99.4% 97.8% 7O.lo/o 101.6% 98.9% 99.9% 114.40/, E6.40/, 99.% 99.7o/o 99.6% Totals 9I 4.4873185 0.2069 100.70/. u9726.4 t24,698.609 0.0215 91.4o/o 36.8 09-Apr-07 16-Apr-07 23-?\pt47 30-Apr-07 07-May-O7 1&May-Q7 21-May47 2*tulay47 O4-Jun47 1 1 -Jun-07 1&Jun-07 25-Jun47 09-Apr-07 16-Apr-07 23-Apr-O7 3o-Apr-07 07-tlhynT 14-May-07 21.May-07 28-May-07 04-run-07 11-Jun-07 1&Jun-07 2$Jun-07 10,2158,584 10,532,763 4,914,032 11,195,972 10.542,192 10,898,01 I 16,852,640 8,965.797 10,443,769 10,311,249 10,342,790 7735860 7735865 7735848 7735842 7735837 7735830 773t5824 7735819 n35812 7735806 7735eO1 7816494 7816489 0$Apr-07 16.1pr-07 2*Apr47 3OrApr-07 07-May-07 1+May47 21-ttayO7 2&May-07 olhrun-07 1 1-run-07 18.Jun-07 16-Apr-07 2$Apr47 3o-Apr-07 o7-t!thy-o7 14-ltay47 21-ltby-O7 2B-l'Iray-OT 04-run-o7 11-Jun{7 1&Jun-07 25-Jun47 O2-Jul47 10,542,821 10,547,850 10,600,655 10,568,595 10,520,e19 14,512,4& 12,056,587 9,372,61 10,06,4,47 10,686,024 10,064,492 09.Apr{7 l6-Apr-07 2}/pr47 30-Apr-07. 07-]hy47 l&May-OZ 214{iay-07 2&ttay-07 04Jun-07 11JuM7 1&Jun-07 25Jun-07 16-Apr-07 2*4W47 3GApr-07 07-ltay-O7 1+lulay47 21-ME4/.0i7 2&llay47 04.Jun47 1 1-lun-07 1&Jun-07 2$Jun-07 10,527,7U 10,549,107 10,497,659 10,704,380 '10,,195,673 10,617,4$1 12,@7,tt2 9,087,423 10,348,00s 10,618,614 10,117,(E9 ENERGY LABORATORIES, lNC. , 2393 Salt Creek Hrghway (A260/) " PO. Box J258 , Casper WyA2602 Toll Free 888.235.05/5 ' 307.235.05/5 " Fax 307.234. /639 , -casper@energylab.com wvvw.einrgytab,com I I Perlod: April l,200Zthrough July Z,Z00l(2nd euarter2007)Page 2 BHV-6 on str€am % Week Filter Start Week ALL BHV on stream % Start 99.9% Stop BHV.6 Start Tcital Volume: Total 4.82E+06 Loading, -17 - TRACK# C07070206 Stop Total I I T 98.1% Stop t I I t Date Per Cent 1 2 3 4 5 6 7 8 I 10 11 12 13 7735858 235853 77358& 7735840 7735838 n35828 7735822 7735817 773581'l 7735804 7816499 7816493 7816487 uz-ryI-ut 09-Apr-07 16-Apr-07 23-AAGO7 30-Apr-07 07-May-O7 1&May-07 21-May-07 28-May.o7 0SJun-Ol 1 1-Jun-07 18-Jun-07 25-Jun-O7 u9-Apr-07 16-Apr-07 23-Apr-07 3O-Apr.07 O7-May-O7 1#May-07 21-May47 28-May-07 04-Jun-07 l 11-Jun-07 I 1&Jun-02 I 25-Jun-oz I 02-Jul{7 I 4.7161 4.6758 4.7418 4.5758 4.6347 4.6433 4.6736 4.7423 4.6876 4.83s1 i 4.6070 I 4.6612 I 4.6n6 I 4.5053 4.4678 4.4943 4.4854 4.4760 4.4696 4.4951 4.5429 4.4429 ) 4.5186 I 4.7440 I 4.4i'30 I 4.4s76 I o.2108 0.2080 0.2475 0.0904 0.1587 0.1737 0.1785 0.1994 o.2447 0.3165 -0.1370 0.2182 o-2340 J902.9 4070.5 4238.3 44A5.3 4575.4 4742.5 4910.1 5102.6 5247.6 5414.0 5586.1 5749.3 5017 7 3735.1 3902.9 4070.5 4238.3 4406.3 4575.4 4742.5 4910.1 5102.6 5247.6 5414.0 5586.1 I 10058.0I roosr.o I rooor.z 10018.2 10206.6 10026.0 t0054.8 I 1550.0 8703.0 9982.8 103272 9793.8 l0tM.0 1U,4U5,9J2 10,532,763 10,549,736 10,496,302 10,693,693 10,504,474 10,506,1r/ 12,068,499 9,093,692 10,346,1q 10,644,588 't0,094,795 10.414.529 I U.UZU3 lo.orsz I o.ozas | 0.0086 0.0148 0.016s 0.0170 0.0165 0.0269 0.0306 -0.0't2s 0.0216 0.o22s 99.9%36.s 37.0 37.0 37.0 37.0 37.0 36.9 36.9 36.9 36.6 36.4 36.4 36.4 99.7o/o 99.9% 99.4o/o 101.3% Td.s-fr. 99.8% 114.6% 86.3% 99.0% 102.50/o 97.2!o Totals 91 21u.0 |4.68199214.501ii7I 100.2%v.ruvo I 130956-6 136,351,318 0.o174 99.970 36.8 Date 1 2 3 4 5 6 7II 10 11 12 l? 7735857 7735851 7735845 77335834 7735833 7735827 7735816 7735815 7735809 7816498 7816492 78164€,2 7A1CU1A oz-Apr-o7 09-Apr47 16-Apr-07 23-Apt-07 30-Apr-07 07-May47 1$May0l 21-May47 z*Nlay-07 0+Jun-07 1 1-Jun-07 1&Jun{7 25-.hn-O7 09-Apr-07 16-Apr-07 23-Ap(47 30-Apr-07 O7-May-O7 14-Nlay-07 21-May47 zB-l'lhy47 04.Jun-07 11-Jun{7 18-Jun-07 25Jun-07 O2-JulO7 4.b1UU 4.4700 4.4665 4.4898 4.4933 4.4793 4.5370 4.520(J 4.5221 4.4729 4.4313 4.4331I AEAT Totals 91 2184.O 4.483/ ENERGY LABOBATORIES, lNC. , 2393 Salt Creek Hrghway (82601) , P.O. Box 3258 ' Caspet WA2602TollFree888.235.0515 ' 307.235.05/5 " Fax 307.234./639 .'casper@energytab.com www.eheigylab.com I I t I I I t T t I t I t I I I I t Workorder Recei pt Ghecklist En ergy Laborato ries lnc Denison Mines Login completed by: Edith McPike Reviewed by: Reviewed Date: Shirping container/cooler in good condition? G.rstody seals intact on shipping contalner/cooler? O.rstody seals intact on sanple bottles? Chain of custody present? Chain of custody signed w hen relinquished and received? Chain of custody agrees w ith sanple labels? Sanples in proper container/bottle? Sanple containers intact? Sufficient sanple volune for indicated test? All sarples received w itrin holding tine? Containerffenp Blank tenperature in corpliance? Water - VOA vials havezero headspace? Water - pHacceptable upon receipt? Y*M Y* EI Yes ! Yes m Yeu M Yes EI YoM Y* EI Yer M Yes M Y"s M Yes! Yes I Contact and Corrective Action Oonrrents: I ililril ffi tilt iltfl tilfl ilil ilfl ilril ilfl ffi ilil c07070206 Date and Time Receir,ed: ll1t2O|t 9:15 AM Receircd by: lt Canier name: Next Day Air Nlo I Non Nlo E Mn t{o E Non Nlo ! l.lo E I{o n Nlo I Nlo E NIo E r{o E l.lot Present ! l.lot Present ! l,lot fresent [l wA'C I{o VOA vials subnitted l,lot Applicable g _ 18_ TRACK# C07070206 ENEBGY LABORATORIE_S, -lNC ' 2393 Salt Qreek Hi,ghway (82601) ' PO. Box J2i8 ' Casper; WY A2602 Toll Free 888.235.05/5 " 307.235.0515 " Fax 307.234.1639 . casper@energylab.com ,www.eheigylab.con I Date' 20-Aug-07 t I t I I t t T I I I I I I I T CLIENT: Project: Denison Mines (USA) Corp 2nd Quarter 2007 EnvironmentalAir Sampling Sample Delivery Group: C07070206 CASE NARRATIVE THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT oRtctNAL SAMPLE SUBMTTTAL(S) All original sample submittals have been returned with the data package. A copy of the submiftal(s) has been includedand tracked in the data package. SAMPLE TEMPERATURE COMPLTANCE: 4.C (*2"C) Temperature of samples received may not be consideie! groperly presgrve{ by accepted standards. samples that arehand delivered immediately after collection shall be considered aiceptabte if thlre is ivGnce that the chilling processhas begun. SOIUSOLID SAMPLES All samples reported on an as received basis unless othenuise indicated. PCB ANALYSIS USING EPA 505 Data report?.d by ELI using EPA method 505 reflects the results for seven individual Aroclors. when the results for allseven are ND (not detected), the sample meets EPA compliance criteria tor pCB monit"ii"g. SUBCONTRACTING ANALYSIS subcontrac{ing of sample analyses to an outside labgralory may be required. lf so, ENERGY LABoRAToR|ES wiff utitizeits branch laboratories or qualified contract laboratories toittris iervice. Any such laboratories will be indicated within theLaboratory Analytical Report. BRANCH LABORATORY LOCATI ONS eli-b - Energy Laboratories, lnc. - Billings, MT eli-f - Energy Laboratories, lnc. - ldaho Falls, lD eli-g - Energy Laboratories, lnc. - Gillefte, \Aff eli-h - Energy Laboratories, lnc. - Helena, MT eli-r - Energy Laboratories, lnc. - Rapid City, SD eli-t - Energy Laboratories, lnc. - College Station, TX CERTFICATIONS: USEPA: WY00002; FL-DOH NET.AC: E87641; Arizona: M0699; California: O211BCAOregon: \Aff200001 ; Utah: 307235051 S; Virginia: 00057; Washington: C 1 903 ISO 17025 DISCLAIMER: The results of this Analytical Report relate only to the items submitted for analysis. ENERGY LABoRAToRIES, lNC. - CASPER,WY certifies that certain method selections contained in this report meetrequirements as set forth by the above accrediting authorities. Some result r"qr""i;d by th" "l1i"nt may not be coveredunder these certifications. All analysis data to be submitted for regulatory enfoicement dnorrJu" certified in the samplestate of origin. Please veriff ELI's certification coverage by visitin! www.energylab.com ELI appreciates the opportunity to provide you with this analytical service. For additional information and services visit ourweb page www.energylab.com. The total number of pages of this report are indicated by the page number located in the lower right corner. t - 19- TRACK# C07070206 fuo^r/rtt/rg fuo^L/n fuo^ L/n-/B a"r.^ --g % fuo^r/r, '/zt% r/l't'e '%.ar, t% %t% r/rt '/6t% % "%r/rt? %-/g "% --rgt% "/E %-4, "%% %-/Z t-o o E oIl o E') E C') .s!tGoJ o -g o E(E o. -I o (elecg 6o1) fuo^ L/r, '/g (oo^ t/rtt/ct fuo^L/r,-/8 '% '4, '% '/c fuo^,c %-e t% r/r,-ar, "%-/o, goo^' "/rt'/6 "%r/t't '-0t% L/r,-? t% L/rt-/o "rr" ".9t"" -/t "%e/r't--{u %'/c "%r/t't '/1 o o E o .Ct o CD E E') .sE'GoJ o G =C' Go. 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Dryer Temp. Ctrl. Box Bucking Room - Located on East Wall Behind Crusher Mill Lunch Room - Located on projection Screen on West Wall South SX _ Located on Column #I0 Maintenance supertintendent's office - Located on North wall ore Feed Gio,ly - Located on North wa[ at power Diskibution Boxes Scalehouse - Located in Office at Northeast Corner oBS (sample plant) - Located on South side of southwest Entrance Door Administration Building - Vault (Conrrol) F oor(E {L Js*IdJ *-h {j{{In J$:3Jtt/**rn{ t \r\ il-ri Ytr\'-F t(\s g t-n-.d t # :iq,,s F tr.$UF E\.t${ Lestr + Sr.\q "s t)t L.st G s d.s .xq!ETU-$\L$*qI ei"ssNSo.E$€AEuctESrg!aP $$ro --Eif8Q Et.FI\o.\1 E b$oiSREt*sst$d8rF** rf, nl oa \fo\ H$ ,l* oo t\(\t a\tt \oN Coq) Eo-c oLo Lo,E IUEEttrooscoT'ooG'.o ..2 (trt(Dc ooE(Dp cooIu,o ?46l \o6I 6 Lo oA c,rl,)E v'! o,3+ $s :s *.i O\ il.}6t t\t €\c}c.l N l\ !trNN $u Su Hs s a GTTJo\ .6t's S P sE E8 He \ol|an6 00 t\ct rl gsggs $g$g$ ile F (\ Crl !+ rar \orar-eo,$ \qvloggqh\oc{i+ oqqo:n\ t"l .+ r C! crr {Frtl}** sSe+s EEe+s s$eas sEsss s$e+u R$e+e ggg€g g$$g$ V* -\,.4-,\} -tt'. \<s-NS.> _}'r \,s\d is3ftEs EsSSix .***tt** ff+xE+e SsxEex SsnE+H EsxEse t\oat\ SEexE+str6 Edrf 3sn$$E loDItr IEtaI'r:lol'trri)itu .st-o lJo .E,+ c)Erq8d> Eg E EoLE ol EI tl. a.r(d,.e Ei\H lt .. 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FORAG€ RADIONUCTIDE DATA NOR?HEAST OFMILL SAMPLED DATE Ra-226 Ra-226 LLD VALUE ERROR uCi/Kg uCi/Kg uCi/I(g 5.0E-08 Pb-210 Pb_210 LLD VALUE ERROR uCi/I(g uCi/Kg uCi/Ie l.0E-06 27-Aue-81 3.90E-04 l.0E-05 5.0E-08 1.10E-03 r.0E-04 1.0E-06 20-Oct-81 1.40E-04 1.0E-05 5.0E-08 6.80E-04 8.0E-0s 1.08-06 l5-Apr-82 1.31E-04 l.3E-05 l.0E-06 4.90F-04 7.0E-05 8.08-05 01-Jul-82 1.608-04 1.08-05 5.0E-08 8.00E-04 t.7E-04 1.0E-07 30-Nov-82 2.67E.06 1.lE-06 r.0E-06 r.088-04 9.0E-06 l.0E-0s l3-Apr-S3 936E-0s 6.28-06 8.0E-09 4.97E-04 9.3E-0s l.0E-04 0l-Jul-83 l.l2&-o4 t.2E-05 6.0E-06 l 84E-04 l.2E-05 l.0E-06 3O-Jan-84 1.09E-04 8.0E-06 4.0E-06 7.80E-04 6.28-05 6.0E-05 28-Jun-84 3.478-04 l.2E-O5 2.OE-09 3.758-03 t.6E-04 4.0E-08 l4-Nov-84 5.61E-04 2.OE-04 2.OE-07 7.828-03 3.38-04 7.0E-08 27-Mar-85 1.05E-03 3.0E-05 2.OE-06 3.228-03 t.4E-04 2.0E-0s l5-Jul-85 8.20E-05 7.OE-06 3.0E-06 7.708-04 1.3E-04 2.08-04 09-Oct85 1.158-04 l.0E-0s 3.0E-06 5.10E-04 3.0E-05 2.0E-05 24-Mav86 5.728-04 2.tE-05 4.0E-06 2.49E-O3 l.0E-04 l.0E-05 10-Jul-86 5.01E-04 t.3E-05 3.08-06 1.57E-03 t.7E-03 2.OE-04 18-Dec-86 8.70E-04 5.0E-05 3.0E-06 6.80E-04 3.0E-05 3.0E-06 20-Apr-87 5.90E-04 7.0E-05 5.08-08 1.50E-03 l.0E-04 l.0E-06 05-Jun-87 1.60E-04 3.0E-05 5.0E-08 9.50E-04 4.0E-0s l.0E-06 22-Dec-87 2.108-04 4.0E-05 5.0E-08 1.708-03 l.0E-04 l.0E-06 19-Anr-88 4.50E-04 7.0E-05 5.0E-08 1.40E-03 1.0E-04 l.0E-06 28-Jul-88 3.20E-05 2.28-05 5.0E-08 1.50E-04 4.48-04 r.0E-06 07-Apr-89 5.60E-04 4.08-05 ***1.10E-03 l.0E-0r xr< * 06-Jun-89 1.50E-04 2.0E-05 xr<*2.30E-04 2.0E-05 *** 07-Nov-89 6.008-04 5.0E-05 7.OE-06 2.04F-03 7.0E-05 l.4E-05 l7-Apr-90 2.60E-04 3.0E-05 4.0E-06 3.308-04 2.0E-0s 2.2E-0s 20-Jun-90 1.80E-04 2.0E-05 5.0E-08 3.208-04 2.0E-05 l.0E-06 17-Ocr90 1.60E-04 2.0E-05 5.0E-08 3.30E-04 2.0E-05 l.0E-06 l0-Apr-91 1.208-04 2.0E-05 5.0E-06 3.00E-04 2.0E-05 l.0E-06 I 1-Jun-91 9.10E-05 1.6E-05 2.08-07 1.90E-04 2.0E-0s 2.08-07 20-Nov-91 4.50E-04 4.0E-05 5.0E-08 1.09E-03 5.08-0s l.0E-06 22-Aor-92 3.60E-0s l.0E-05 2.OE-06 1.50E-04 2.0E-05 1.08-05 l0-Jun-92 1.008-05 7.OE-O6 2.OE-O7 7.50E-05 2.0E-05 1.08-06 l0-Jun-92 7.90E-05 3.5E-05 3.0E-06 7.108-04 7.0E-0s 2.08-05 I t I I I I I I t t I I I t I W.TIITE MESA MIII, FORAGE RADIONUCLIDE DATANORTHEAST OFMILL - Pb-2to LLD ERROR uCilKg uCi/Kg t.0E_06 t___ I Ra-226 Ra_226 I vALr.iE ERROR I uci/Ks uCi/Kg *.-{=i ffi-I ,** | ,cixg I - SAMPLED DATE LLD uCi/Kg 5.0E-08 l3-Apr-93 5.',lots-05 ) rF-o\3.0E-0626-Jun-93 3.00E-0s 3.0E-05 2.OE-05t.5E-05 3.0E-06 4.30E-05l2-Oct-93 3.5E-0s 2.0E-056.60E-05 2 7F-O<3.0E-06 _ 5.30E_04l1-May-94 1.80E-04 4 oF-n{6 0F-o5 2.0E-053.0E-0s 4.40F.-o419-Jtl-94 l_71tr-os 6.0E-0s 2.08-04r.2E-06 9.0E-0s28-Nov-94 3 00F_os 6.lE-06 4.58-062.408-04 1.58-05 l.7E-O7I l-Apr-95 1.708-04 l.lE-Os 8.3E-076.70E-05 5 4F-n6.t.6E-07 1.408_0406-Jul-95 1.50E-05 I 5F-O6 I 3F-O{7.9E-07l.5E-07 s.10E-05l5-Nov-95 5.50E-0s A<E AA 7.6E-075 0F-o6 l.8E-07 6.70E-Os23-Apr-96 s.20E-05 l.0E-0s 8.8E-07) 5F-n6,l.5E-07 3.20F,o53 l-Jul-96 ,<4.58-06 l.8E-07** 14-Nov-96 **{<3.00E-05 ) <p_oA 1.8E-07 1.408-0421-Apr-97 LlOE-os 7.tE-06 9.3E-074.78-07 l.2E-O705-Sep-97 4.10E-05 3.68-06 6.tE-07l.l0E-05 4 ?F-n1 t.3E-07 _ 2.10E-0s20-Nov-97 8.00E-06 I )F-fiA 71F-fi1 6.78-075.68-07 1.40F'o423-Mar-98 <9.10E_05 4.68-06 l.1E-07g lF-ns 9.lE-05 <4.50E-0416-Jun-98 1.80E-05 4.58-04 4.5E-04r.2E-06 6.3E-08 4.00F-os05-Nov-98 5.70E-05 1.8E-06 I s.zB_otl.0E-06 8.2E-08 8.70tr-osl5-Apr-99 2.008-04 s.0E-06 | +.rc-ot3.0E-06 1.28-07 3.00E-0407-Jul-99 l.0E-05 6.0E-056.03E-05 1 4F.-n6.8.3E-08 _1.408-0402-Dec-99 2.30E-05 1 0F-O6 4 7 -0,6 4.28-072.38-07 2.10E-052l-Apr-00 1.50E-04 l.0E-06 t.lE-063.0E-06 t.2E-07 1.608-04 1.60E-04 22-Jluri,-00 1.20E-06 8.0E-06 5.98-07I OF-n7 2.88-012l-Dec-00 1.60E-06 t.0E-05 t.4E-06l.lE-06 3.78-07 5 tnF_n<30-Apr-01 5.0E-06 1.9E-061.00E-06 I OF-n7 2.48-07 <1.2E-06l4-Jun-01 2 70-F.-o6 l.0E-07 2.48-072.OE-07 9.9E-08l7-Dec-01 ? RnF-n(_ 2.OE_07 s.0E-079.10E-06 2 4F.o6.t.2E-07 _3.57E_0507-Mav-02 3.30E-05 I RF-O6 3 0F.-n6 6.OE-077.68-07 4.5OE-OsO7-Iul-02 5.55E-Os 2.6E-06 l.0E-052.88-06 7.68-07l5-Dec-02 5 11F-n<3.98-06 r.0E-057.758-05 168-n,A 7.68-07 t.298-042l-Mar-03 9.10E-06 6)E_iA l.0E-0sI ?F-O6 3.68-07 l.l3E-0sl0-Jun-03 2.50E-05 I AE n..3.48-06r.3E-06 3.6E-07 3.268-0620-Nov-03 2.08-06 7.48-085.70E-05 3.sE-06 I r.sp_02 4.05E-05 5.8E-06 8.38-07 I I I T I I I I I I I T t T I I I I - sAMrLED I var-uaDArE I uci/Kg I l4/HITEMESAMILL FORAGE RADIONUCLIDE DATA NORTH EAST OFMILL Ra-226 LLDERROR uCi/Kg uCi/Kg 5.0E_08 Pb-21O Pb_210 LLDVALI_IE ERROR uci/KguCi/Kg uCi/Kg t.oE-06 -- 08-Apr-04 I 3RF-Os 3.78-06 t.tE-07 l2-Jun-O4 3.08-06 5.9E-06 s.5E-075.63E-05 l AR-NA l.8E-07 6.42E-0530-Nov-04 8.41E-05 .5.5otr-06 9.08-07 2.00E-08 2.488-04 1.40E-0521-Apr-05 5.60E-05 3 00F-O6 i ooF-n7 1.40E-07 5.80E-Os 4.00E-06l3-Jun-05 9.1oF-o6 6.908-01r.50E-06 1.80E-07 I I OE_O<l0-Nov-05 r.20E-05 9.00E-076.00E-05 ? ooF_n(l.l0E-10 5.00E-08 1.70E-0603-Apr-06 8.00E-0s 5.OOF-O6 6.408-07 5 50F-ro 3.40E-04 1.20E-0516-Jun-06 4.10E-0s 3 loF-O6 I O0li_o6 5.00E-08 l.t6F.-o4 6.10E-0628-Nov-06 t.t7E-04 1.00E-064.OUb-06 1.90E-07 5.26b-O4 9.s0E-06 9.508-07JU-Vtar-U /9.70E-05 4.408-06 t.yuB-u I 3.408-04 8.70E-06l-Jun-07 8.4-07r.JUI1-U5 1.60E-06 1.908-01 t.21JE-04 6.60E-06 >. tuL-u I I I I I t I t t T T t t I t I t I T T FORAGE RADIONU&IDd DATANORTH WEST OF MILL Pb_210 LLDERROR uCilKguCilKg t.0E_06 : I Ra-226 Ra_226 I VALI-TE ERROR uCilKg uCi/IQ --.I pu-zroI u** I ucixst" - SAMPLED DATE uCilKg 5.0E-08 27-Aus-81 r-- 5.0E-0s 5.0E-0820-Oct8l 2.00E-04 7.10E-03 8.30E-O4 3.08-04 l.0E-06I OF-n<_ s.0E_08l5-Apr-82 1.048-04 s.0E-05 l.0E-069.0E-06 7.OE-06 6.408-04 2.20E_04 8.00E-Os 0l-Jul-82 2.00E-05 _ 5.0E_05 4.0E-051.0E-05 5.08-083O-Nov-82 2.368-06 9.0E-0s t.0E-079.58-07 1.0E-06l3-Apr-83 8.58E-05 l.0E-0s l.0E-05I 4F-o<2.0E-080l-Jul-83 t.t9E-04 3.53F.-O4 l.9E-0s l.0E-05LIE-os I s.0E-06 1.58E-o430-Jan-84 9.78E-05 l.3E-05 | r.or_os7.08-06 | z.oa_oe 2.16E-03 1.60E-03 28-Jun-84 _2.088_04 3.4E-04 3.08-04l.0E-05 3.0E-09 2.OE-O7 l4-Nov-84 6.05E-04 t.6E-04 7.0E-0s | :.ou_os 27-Mar-85 l.l0E-04 2.58E-03 l.tE-04 3.0E-083.0E-06 8.63E-04l5-Jul-85 6.10E-05 4.28-Os 3.0E-056 nF_o6 2.OE-06 5.40F.-M09-Oct85 1.078-04 s.0E-05 5.0E-056 oF-nK 2.08-06 3.80E-0424-Mu-86 8.86E-04 3.0E-05 2.0E-0sI RF-n<2.OE-O6 4.40F.-o?l0-Jul-86 I 6.66E_04 t.9E-04 3.0E-05r.8E-05 _ 3.0E_06 4 7RE-rr2,l8-Dec-86 2O-Aor-87 05-Jun-87 5.208-04 2.tE-04 l.0E-04 l.0E-04 6.0E-0sl.0E-04 3.0E-06 1.70E-034.toE-04 l.0E-04 6.0E-05SnEna1.60E-03 5.508-04 1.60E-04 3.0E-0s s.0E-08 1.0E-06 22-pec_87 I :.ooB-oa 4.0E-0s l.0E-065.0E-0s s.0E-08 1.80E-o?l9-Apr-88 2.608-04 l.0E-04 r.0E-065 nF-n<5.0E-0828-Jul-88 3.108-05 1.90E_03 - 1.60F,-O4 l.0E-04 1.0E-06I qF-n<5.0E-0807-Apr-89 6.208-04 4.0E-0s l.0E-065.0E-05 *** 06-Jun-89 _3.40E_04 1.70E-03 l.0E-04 ***3.0E-05 {<** 7.OE-06 07-Nov-89 5.10E-04 _ 6.08-05 7.40E-04 1.00E-03 4.80E-04 3.208-M _ 3.0E_05 x** 17-Apr-90 _ 3.60E_ol 7.0E-0s 1.4E-053.0E-05 4.OE-06 s.0E-08 20-Jun-90 1.70E-04 ,nEn 2.0E-0s 2.zF-Os 17-Oct-90 8.80E-05 2.0E-05 1.0E-061 6p-n(5.0E-08 2.90F.-o4l0-Apr-91 3.00E-04 2.0E-05 l.0E-063.0E-05 5.0E-06 4.toE-04 4.70E-04 1.50E-03 I 1-Jun-91 _ 3,10E_04 2.08-05 l.0E-063.0E-05 2.08-07 5.0E-08 20-Nov-91 5.00E-04 4.08-0s 2.0E-05 2.OE-07 22-Apr-92 2.008-05 l.0E-04 1.0E-06R OF-OK 2.08-06 9.60E-oslO-Jun-92 6.508-06 l.4E-05 l.0E-056.0E-06 2.0E-06 1.208-04 2.08-05 l.0E-06 I I t t t I T T T : _ *.- WHITEIVIESAMILLFoRtg! I4DroN uciDE DATANORTH wEsT oF IvOLt..., . 1LaoRa_226 ERROR uCi/Kg -!-L^-^- LLD uCi/Kg 5.0E_08 I 3.oE-o6 ISAMPLED DATE l0-Jun-92 VALTIE uCilKg 1.20E_04 - I RNE N< Pb_210 Pb-21tVALLIE ERROIuCi/Kg uCilKg -_-_ 1.218-03 I ;""_^ LLD uCi/Kg r.0E-06 l3-Apr-93 I T.VD-I JT'-----'-------- 26-Jun-93 IE-U)3 oF_o(2.10E-04 t--'U,E-UJ 5.20E-0s 10E 3.0E_06 3.0E-05 ,nEn< l)-Oat Oa 5.108-05 I 70tr-o5 _ 3.6E_05 2.OE_052.3E-Os 3.08-05ll-May-94 1.20F.-oi^7.toE-04 6.0E-Osr.0E-05 ?nEn<2.0E-0s l9-Jul-94 9.80E-043_7iF-os r.6E-06 1.6F'O4 2.OE-04 28-Nov-94 7.80E_0s2.40E.04 l.5E-05 7.1F.-o6 4.2E-o7 I l-Aor-95 2.60E-048.40E-0s 6.tE-06 l.3E-0s 8.3E-07 06-Jul-95 l<E 1.208-041.90E-0s l<E t.4E-07 l.lE-05 7<E l5-Nov-95 1.208-04 4.50F-o{4.38-06 7 )E-n1t.4E-0723-Apr-96 8.30E-05 I ooF-o<5.88-06 _7.1E_073.3E-06 1.9F.-O73 1-Jul-96 *6.808-0s 6.3F.-O6**l.8E-07 _14-Nov-96 *3_60tr-os 2.sE-06 ,<* 21-Apr-97 t.6E-07 8.50E_053,30F-ns 2.38-06 5.6tr-o6 8.48-07 05-Sep-97 4.408_05s.40E-06 3 sF-n"t.6E-07 4.8E-06 R 4F-o" 2O-Nov-97 8.90E-06 3-20F-ns _9.08_075.4E-07 7.88-07??-lUar oa <9.20E_05 3.4fiF-nt 6.78-06 l6-Jun-9R 9.28-05 --9.2E_0s <4.608-04 1.tE-07t< 6.50E_08 6.5E-0s 4.6E-04 4.68-04 _1[5-Nov-98 A<_<3.208_074.208_05 l.0E-06 l.lE-O7 3.28-07 3.28_07 !5-Apr-99 6.20E-os 1.70E_04 l.OE-osl.0E-06 TNE^?5.5E-07t t 07-Jut-99 t.40E-045.45tr-os t.4E-06 7.oF.-o6 t.oE-07 02-Dec-Aq 8.3E-08 9.20F.Os1.10E-04 3.08-06 4.OE-06 4.2E-07 21-Anr-00 2.28-07 2.80E-0s3.70E-05 1.0E-06 _ 1.0E_06 1.1E-06 22-Jun-OO 2.48_07 I 2.70E_042.908-05 l.0E-06 t.0E-0s t.2E-062l-Dec-00 ??FN?2.80E-042.30E-O6 t.4E-O6 3.78-07 2.0E-05 t.7E-06I30-Apr-01 2.loF-os 3.308-04 5.OE-Osl.0E-06 lsEn,_1.9E-06_ l4-Jun-01 <7.68-071.30F-o6 4.0E-08 N/A _7.6E_O7l7-Dec-Ol t.2E-O7 1.80E-063.708-0s '7 618 .n1 3.0E-08 5 qF-n" 8.30E_087-trl{qv-.ft1 4.908-05 6.7)F-o<2.62E_06 6 onF-n"7.608-077-Jul-02 8.88E-0s 1.28E-04 _5.61E_06 1.00E-054.32E-06 7.60F'o7l5-Dec-02 I --508-0/.8.33E-05 4.32F.-O66.2E-06 7.60F-07 1.008-0s 21-Mar-O1 3.168-045.00E-0s 3.48-06 1.07E-05 t.0E-0s l0-Jun-03 ,'t1E <4.2e-6s.60E-0s 2.OE-06 4.20F.-o64.10E_07 _ 1.88E_04 5.14E-06 8.2E-08 I I I I I I I t I I I I I I t I t I T WHITE MESA MILLFORAGE RADIONUCT-NE NATENoRTHwEsrorrnri --. LLD uCi/Kg 1.0E_06 I_l 8.3E-07 I I Ra-226 Ra_226 ,r, I ,:T ERROR uci/Kg 1 ucifis uCi/Kg s.oE_08 - 3.20E-04 I ;r*, - l-l;.o? 1 pb_2t0 pb_2r0 II VALUE ERRORuCilKg uCilKg 4.8e8-04 I ;;_,* SAMPLED DATE 2O-Nov-03 8-Apr-04 12-Iun-04 .r_E-uo ) OOE..nt 1.948_05 | -- "" 6.51E-Os 3.48-06 1.30E-o7 4.00E_06 l.0E-06I0-Nov-04 7.-5otr-o5 1.87E-0s 3.90F.-o64.68-06 6.5E-O7 _21-Apr-05 2.0E-08 1.30E-07 1 <nE n? 4.45E_044.90E-o{2.708-06 1.408-05 3.0E-07 l3-Jun-05 1.27E_042.3Otr-n5 2.10E-O6 4_808-06 6.soE-07 lO-Nov-05 4.708_057.40E-05 ? sr)F-n(1.20E-10 s.l0E-06 '7 6o-Ii-n1 5-Apr-06 1.00E-04 _6.00E_06 2.40F-n,6 _8.10E_08 5.80E_105.008-0816-Jun-06 9.50E-0.5 6.548-04 1.50E-0s5.90E-06 5.00E-OR I.00E_06 28-Nov-06 _ 8.13E_0s 4.488-04 1.40E-Os4.108_06 2.208_07 1.00E-06 I0-Mar-07 3.25E-04 4.30E-05 _2.608_06 r.12E_06 r.00E-0s _1.708_07 _2.648_04_ 1-Jun-07 5.10E-0-5 7.208-06 8.60E_073.20E-06 2.308-07 5.30E_04 1.40E_05 1.208_06 I t I I I I t t T I t I t I I I T I T '' __-_-___H :_ FoRAcE RADrorvr;cuoa_ilara souTH WEST Or uur"--.. zzo Ra-226 LLDERROR uCi/KguCi/Kg 5.0E_08 ISAVPLED DATE VALT]E uCi/Kg -- yb_'zto Pb-210 LL;VALLIE ERROR uCilKguCi/Kg uCi/Ke r nE nz 27-Aus-81 -------9 50F-o1 2.0F-0s 5 nF-na21-Oct-Rt t.50E-04 t.0E-0s r.0E-063.00E-0s 3.0E-06 15-Apr-82 {oFna 1.50E-041.378-o{3.0E-06 3.0E-06 2.OE-Os r.0E-060l-Jrrl-R,3.80E-043.408-04 2.0E-05 4.0E-05 4.08-0530-Nov-82 snE 3.68E-031.75E-0s 3.08-06 _2.78_04 l.0E-07l4-Apr-83 ,NE _7.928_047.13F.-M _ 7.3E_0s qoFna 4.0F--O6 2.0E-0sl)l-Jul-83 _ 2.stE_035.398-os 4.5E-06 )OEA<3.OF.-OA 3.08-04 3O-Jan-84 6.88E-046.40tr-o{7.OE-06 A nE hr.4.38-os 4.0E-0s 28-Jun-84 1.208_038.27F.-o<6.3E-06 ?nEnrr I _0E-o4 4.0E-05 14-Nov-84 1.80E-032.728-04 l.5E-04 ) o'R-rr1 l.0E-O4 9.0E-0827-Mar-85 _4.708-03 7.28-044.73F.o4 t.6E-07 ? oF-n(3.OE-07 l5-Jul-85 _7.0T8_046.60E-O5 _ 7.0E_06 _4.08_06 3.6E-Os 3.0E-0s09-Oct-8s 4.90E-042.838-04 2.0E-05 3.0E-05 3.0E-05 24-Mar-R6 _ 7.0E_06 r.50E-031.57E-04 1.0E-0s l.0E-04 7.08-0sl0-Jul-86 4.OE-06 4.148_033.78F.-oL 1.0E-0s l.8E-o4 3.0E-0sl8-Dec-86 ) OE AE,1.658-022.60E.-oa 2.OE-}s 2.08-06 7.OF.-OA l.0E-0420-Aor-Rt 1.70E-034.10E-04 7.0E-O5 l.0E-04 l.oE-o45.0E-08 ) 1nE05-Jun-87 2.908-04 t.0E-044_OF-os s.0E-08 ,7 <nD l.oE-o6 _ 1.80E_04 _5.0E_05 l9-Apr-88 3.0E-0s 5 r)F_na 2.40E_03 r.0E-06 2.30F.-o4 5.0E-05 5 r)E-na l.0E-O4 1.0E-06 28-Jul-88 _2.908_031.50E-O4 3.0E-05 SnFna l.0F.O4 l.0E-06 07-Apr-89 4.308_033.loF.-oL 4.0E-0s x**2.OF.fiA l.0E-06 _06-Jun-89 4.20E-031.70F-o^2.0E-05 1.OF'o&*** _07-Nov-89 ***1.50E-034.?oF-M.5.0E-05 1 tlE l.oE-o4 ik** 28-Mar-90 3.50E_032.50F.-o^3.0E-05 5.08-06 1.4F.-M 2.78-05 l3-.Iun-qo 2.39F-07t.l0E-04 2.OE-05 s.0E-05 2.sE-Os 23-Oct-90 snE 6.608-046.10E-Os 1.4E-05 s nE_na 3.0E-0s l.0E-06l0-Apr-91 _6.10E_043.40E-Os l.lE-05 SnEn<3.0E-Os 1.0E-06 1 l-Jun-91 2.208-048-ooF-O5 6.0E-06 ?nEn?l.OE-os l.0E-06 _20-Nov-91 1.208_046.5OE-O5 1.4E-05 5 oF-oa l.0E-05 2.0E-07 22-Apr-92 9.10E-041.60E-Os _7.08_06 ) fip-.n,a 5.OE-os _ l.0E-06 l0-Jun-92 _3.208_041.90E-05 1.0E-0s 2.OE-07 2.0E-Os t.0E-0s 2.208_04 2.08-0s l.0E-06 I t I I t I I I I I T t I I I t I I T % -_- FOR -'-ir= Ra-226 ERROR uCi/I(g - WtrnE MESr AGE BADIONUI SOUTHWEST( LLD uCilKg 5.0E-08 _______ \ MILL ]LIDEDATA )F MILL Ra-226 VALIIE uCi/Kg - 1 nb_2r0 pb_2to 1 varue ERRoR 1 uci/Ke uCilKg SAMPLED DATE LLD uCi4(g 1.0E-06 08-Dec-92 l.ou.b-u5 l.8E-0s 3.0E-06 i- l3-Apr-93 - 27-Iun-93 - 27-Oct-93 2.608-05 2.08-05 6.08-05 3.0E-05 3.0E-05 _ 2.0E_053.0E-06 3.408-04_ 3.008_05 l.4E-05 2.OE-053.0E-06 3.0E-06 0.00E+00 4.20F'o4 3.10E-05 I 6F-o5 2.0E-05 0l-Mav-94 2.00E-05 6.0E-0s 2.08-055.0E-06 3.0E-05 3.908-0419-Jul-94 16-Nov-94 1.758-05 t.7E-06 8.0E-05 7.88-06 2.OE-04TAEAA1.30E-04 2.60F.-Ot 1.00E-04 q oF_n<l.sE-07 3.8E-07 05-Apr-95 07-Jul-95 _ 1.70E_05 t.2E-05 l.5E-0s 7.48-071.5E-06 t.6E-07 I.4E-O7 1.60E_04 - _4.408_0s 6.408-06 6.08-07 8.lE-07 09-Nov-9s 2.308-os 4.2F.-O6 7.OE-072.2F,O6 1.78-07 6.60E-Os24-Apr-96 4.208-os 9.68-06 8.3E-072.28-06 t.7E-07 1.00E-043 l-Jul-96 {<,<6.78-06 _ 1.8E-07*{<l4-Nov-96 2l-Apr-97 2.10E-05 2.OE-O6 **t.6E-07 t.4E-07 1.90E-04 3.30E-05 1.90E-05 1.308-04 5.50E-06 4.2E-07 7.38-06 8.28-07 05-Sep-97 5.30E-06 3.98-06 7.OE-073.28-07 l.3E-0720-Nov-97 2.50E-0s 6.98-07 6.3E-07I5F-O7 5.9E-0726-Mar-98 <7.90E-0s 7 gl?-n5 4.7E-06 r.2E-077.9F-05 <3.90E-o4l6-Jun-98 3.60E-07 3.98-04 3.98-04I 4F-O1 3.3E-08 <1.78-0709-Nov-98 l5-Apr-99 O7-Jul-99 4.30E-05 t.7E-07 1.0E-05 8.0E-06 t.7E-07r.0E-06 7.6E-08 2.508-042.40E-05 1.0E-06 3.8E-07L.2E-07 t.708-042.23E-05 8.6E-07 _ 6.2E_071.28-07 2.0E-07 t.2E-07 2.308-04 1.70E-05 O7-Dec-99 1.508_04 3.0E_06 7.OE-06 5.98-07 _21-Apr-OO 1.00E-04 ) nE-.nA r.0E-06 r.0E-06 22-Jun-00 1.30E-06 I _ lotr-o/.7.OE-06 6.tE-o7l.0E-07 2.4E-07 2.OOF.OA2l-Dec-00 1.208-06 t.0E-0s t.2E-06g oF-O?2.48-07 1.20F.-o430-Apr-01 1.80E-06 3.0E-05 N/A r.2E-06l.0E-07 t.7E-07 <8.3E-07l4-Jun-01 I 2.608_06 2.08-07 8.3E-079.9E-08 l.l0E-05l7-Dec-01 07-May-02 _2.63E_06 4.68_05 2.0E-08 3.78-06 _ s.0E_07t.2E-07 7.68-07 9.40E-05 1.368-04 7 04F-fi< 3.50E-05 2.28-06 6.OE-07 O7-Jul-OZ 4.02E-05 5.6E-06 l.0E-0s)AEn,A 7.68-07l5-Dec-02 8.10E-05 4.tE-O6 1.0E-053 qF_o6 7.6E-07 2.87F'o42l-Mar-03 l0-Jun-03 3.70E-05 8.sE_06 - _ 2.08_06 t.0E-052.6E-06 TLENA 2.698_0s _ <1.00E_07 1.30E-05 l.0E-06 5.28-07 3.78-06 l.0E-07 T T I t T t I I I I I I I I t T I T I -.^- WHITE MESA MILLFORAGE RADTONUCLIDE DATAso{,mH WEST OF Mtr i'"'^ SAMPLED DATE Ra-226 %Ra-226 LLDVALUE ERROR uCi/KguCi/Kg uCi/Kg 5.oE_08 -i_.- Pb-210 %Pb-210 LLDVALUE ERROR uCitKguCi/Kg uCilKg t.oE_06 l I 20-Nov-03 l.rrU.E-U4 1.3E-O5 1.28-0708-Apr-04 _t.4oE_04 6.48-06 5.98-077.78-06 l.1E-07 6.10E-0612-Jun-04 6 5tF-oq 3.2E-06 2.7E-O6 - 5.5E_07 3O-Nov-04 5.278-05R 40F_o<_s.7E_06 4.9F.-o6 7.68-07 21-Apr-05 3.398-041.70E-o5 l.6E-06 l.6E-0s 3.08-07 l3-Jun-05 _ 4.50E_051.50F-Os r.6E-06 3.5E-06 6.sE-07 lO-Nov-05 t.4E-07 7.00E-053 ROF-n5 2.18-06 5.lE-06 6.9E-07 03-Apr-06 1.208-06I OOF-n/6.0E-06 4.8E-OR _ 4.38_10 l6-Jun-06 3.30E-043 40F-os 2.58-06 5 r)F-na l.lE-Os l.0E-06 28-Nov-06 1.318-04 6.0E-067.318-05 12np-oA 1.0E-06L60E-o7 _ 2.988_0430-Mar-O7 3.00E-05 8 50F-oA 8.20E-072 ).oF-n6.t.708_07 _3.208_04l-Jun-07 l.l0E-04 7.90F.-o6 8.40E-074.608-06 2.3-07 3.208-04 1.10E-05 l.l0E-06 EfF*f{,H!'?Ef{?5'f!,1{f;;'!'!;{19:ffli{ggryIf,i%;i3,,*{*{?,;,fr::f:iaf,!,!:::, I t I I t I I I I I t ANALYTICAL SUMMARY REPORT May 23, 2007 Denison Mines 6425 S Hwy 191 PO Box 809 Blanding, UT 84511 Workorder No.: C02040190 Project Name: Early Spring Vegetation Energy Laboratories, lnc. received the following 3 samples from Denison Mines on 4t4f2oo7 for analysis. Sample lD ClientSample lD Collect Date Recelve Date Matrlx Test C0704019G001 Northwest Area 03130107 13:33 04104107 Vegetation Oig""tion, naOio"f.,rri.t y Lead 210 Radium 226 C070401 9G002 Southwest Area OAngnT 13:30 O4lO4tOZ Vogetation SameAs Above C070401 S0-003 Northeast Area 03130107 143A A4n4lO7 Vegetation Same As Above I I I t t I I T There were no problems with the analyses and all data for assodated QC met EpA or laboratory specificationsencept where noted in the Case Narraiive or Report. lf you have any questions regarding lhese tests results, please call. Report Approved Byl Trac(#COZO4OIgO page t #f*f il,ile?E{:!ffi ;,:'#!ig:ffi i{s!.:,J:igf g;#8tr{q,f !.,,i,f ffiil{,::#,I t I T Client: Project: Lab lD: Client Sample LABOMTORY ANALYTICAL REPORT Denison Mines Early Spring Vegetation c07040190_001 lD: Northwest Araa Repoft Date: 0il2lt07 Collection Date: 03/30/07 13:S3 OateReceived: O4A$A7 Mabir Vegetation I Analyses MCL' QCL MethodResult Units Qualifiers RL Analpis Date / By 0.86 o.17I I I I I T I T t T I RADIONUCLIDES - TOTAL Lead 210 L€ad 210 precision (t) Radium 226 Radium 226 precision (*) NERHL6S4 C/rtlit0.t 12:0O t pt!NERHL-6$4 O4t16tO7 12:00 / pljE903.0 04/30/02 il;25l cruES03.0 OilZOnt I1:2S / crw 264 pGi/kg 7.2 pCilkg43.0 pCi/kg 2.6 pCi/kg t I Rsport Delinltlons: RL - Analyte reporting limit. QCL - Quality controt timll MCL. Maximum contaminant levet. ND. Notdetected at the reporting limit. Track#CO7O4O 1 90 page T I ENEECY LABORATOETES, lNC. ' 2393 Salt Creek Highway (s260!! . P.O. Box JZSS . Caspet tt/ya760protlFree&a4.zss.asts . o0i-. ',i.osts . rus0zes4.i61s':rAiiiidriibyil4.,;:m*eiiisiiab.-c;;; I I T Client: Proiect: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines Early Spring Vegetation c07040190401 Northwest Area Report Date: 05/23/07 Collection DaG: 03/30/07 13:33 DateRecElved: 041041A7 Matdx: Vegetation I Analyses Result Unlts Quallfiers RL MCL'QCL Method Analysls Date / By I I I I I t I I I I I RADIONUCLIDES. TOTAL Lead 210 Lead 210 prectiion (r) Radium 226 Radlum 226 precision (*) 2.6E-04 uCi/kg 7.2E-06 uCl/kg 4.3EO5 uCirtg 2.6E-06 u0i/kg 8.6E-07 1.7E-07 NERHL-65-4 i4nilA? 1tr;OO t ptj NERHL.6$4 A4n6nt 1,2tOO t ptjE903.0 C/,ROtOt t.t:25 / crwE903.0 04l31l}t 11:2S / crw t T Report Deffnltlons: RL . Analyte reporting limit. QCL - Quality control ilmit. MCL - Maxlmum contaminant level. ND - Not detected at lhe reporting limit. Trackr*CO7O4O19O page I T ENERGYLABoB,AronEs, tNC. . tsgssancreekHtg^hway(sz60t). p.o. BoxgzSS . caspet; wyaz602ratlFree888.23i.0its . sa. '2s.0st5 ;-iiabi'fu;:i6i6":'";ri;;d";;;iytrb{.. t.nnvw.anergytab.com T T LABORATORY ANALYTICAL REPORT Denison Mines Early Spring Vegetation c07040190-002 Southwest Area ReportDate: 05123/07 Collectlon Date: 0A/29/07 13:30 OateRecelved: 04lO4lOZ Matrix: Vegetration Cllent: ProJect: Lab lD: Cllent Sample ID: Analyses Result Unlts Qualifiers RL MCU QGL Method I I t I I I t t RADIONUCLIDES - TOTAL Lead 210 Lead 210 precision (t) Radium 226 Radium 226 precision (*) 324 pCi/kg 7.9 pCilkg 30.4 pOvkg 2.2 pca/ks 0.84 0.17 NERHL-Gil Mt16tO7 tZ:O0 I pl1 NERHT-65-4 O4t16tO7 12:OO t ptlE903.0 A4BO07 fi:2i I ctw8903.0 O4ft0fi7 11i25 I ctw I t I T I I I leqort RL - Anatyte *;;rS rr'i.-Definitions: eCL - euality control limit. MCL - Maximum contaminant level, ND - Not detected at the reporting limit. Analysis Date / By Track#CO7O4Ot90 page ENEROY LAEOHATOBIES, tNC., 2093 Salt CrpekrollFree888.pSS.0St5 . A0' 'qr.litr : iaiibiisa''yf,f lif 5f[r&!-1!"ff!,3;,:*Wq,{!,#,::#!btr:#f ,Toll Free 888.235.05t5 . AA' I I I I I I t t T Client; Project: Lab ID: Glient Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines Early Spring Vegetation c07040190-002 Southwest Area Report Dale: O5123107 Collection Date: 03/29/07 13:30 DateRecelved: O4lA4fil Matrin Vegetation Analyses Result Units Quallfiers RL MGU QCL Method Analysis Date / By RADIONUCLIDES -TOTAL Lead 210 Lead 210 precision (j) Radium 226 Radlum 226 precision (r) 3,2E-t)4 uCi/kg 7.9E06 uCi/kg 3.0E"05 uoukg 2,2E-06 u0ilkg 8.4E-07 1.7E47 NERHL-654 }4n$/0tt 12:00 / ptj NERHL-654 Un6rc7 12;00/ptjE903.0 O4B}tOt 11:25 I cwEgO3.0 C!,t3OtOt 11.28 I cNe T I T I I I I I I T Rsport Deflnltions: RL - Anelyto reporling limit. QCL - Quality control limit. MCL - Maximum contamlnant l€v61. ND - Not detected at the reporting limit. Track+fCO7O4O 190 page #f FEf ililiffif{?w.{{,?;r'#{,95;{f [g!.:,Jff i3;i3,,?{,,#ffi::f :laff i;tr, I I I I I t T Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines Early Spring Vegetation c07040190-003 Northeast Area Report Datel. e5t23fil Collection Date: 03/30/07 14;30 DatreReceived: O4lO4t07 Matrix: Vegetation Analyses llcuQCL MothodResult Units Qualifiers RL Analysls Date / ByRADIONUCLIDES . TOTAL Lead210 Lead 210 precision (r) Radium 226 Radium 226 precision (r) 337 8.7 96.7 4.4 pCUkg pCi/kS pCi/kS pCi/ks 0.84 0.19 NERHL-65-4 O4t16tOT 1Z:OO I ptjNERHL-6S4 O4t16t}t 12:OO I pgE903,0 O4t3OtO7 t1:2s I cME903.0 MBO1OT 1,1:25 t cw T I I T t I T I T t T T RL. Analyte reporting ,imit. QCL - Quality conlrol tirnit. MCL - Maximum contaminant level, ND - Not detected at the reporting timit. 6Track#COTO4OrgO page I _ENEBey LABOBATOREA tNC. . 2393 Satt Creaani;;;ea2;s:fri;:Tf",tiH;fffi%i5i!!1fl!.:vJsg[i3;8fif,ff,,{1ffi:r,ib[,[.!;tr, T I I I client: Project; Lab lD: Client Sample lD: LA BORATORY ANALYTICAL REPORT Denison Mines Early Spring Vegetation c07040190-oo3 NortheastArea Report Date: 05/20107 Collection Date: 03/30/07 14:30 DateReceived: O4t04lOl Matrix: Vegetation I Analyses MCUQCL MerhodResult Unlts Quallflers RL Analysis Dats , By t I t I t I I I I I t RADIONUCUDES - TOTAL Lead 21o Lead 210 precision (t) Radium 226 Radium 226 precision (r) 3.4E-04 uCiftg 8.7E-06 uCilkg 9.7E-05 uGi/kg 4.4E-06 uCUkg 8.4E-07 1.9E-07 NERHL€5-4 MtlltOZ 12:00 t pgNERHL€S4 O4t16tO7 12:00I piE903.0 O4tSOtO? 11:25 I conE903.0 O41SOIOT 1I:ZS I c.w I T Report Deflnitions: RL - Analyte reporting limit. QCL - Quallty cont(ol limit. MCL - Maxlmum contaminant level. ND . Not detected at the reporting limit. Track#CO7O4O190 page $NEBC!, LABORATOHEA tNC. . Z39i Salt Creekbil Free 889.235.05/5 , 30: 'cs.zgts-. -ti ihi;.;;?'f,f iirfi;{i#!-1!w;#3r*iq'f ,,;,,fr ,1:f :ib[{,';r:,Toil Free 888.235.09/i, g0: I I I I I I I I T t I t QA/QC Summary Report Client Denison Mines Project Early Spring Vegetation Sample lD: C02040190-001AMS Radium 226 Sample lD: C07040190{O2ADUP Radium 226 Radium 226 precision (r) Sample lD: MB-M226-2019 Radium 226 Sample lD: LCS-RA226.2019 Radium 226 Report Date: OS(2SIOT Work Order: C0Z04O19O Sample Malrix Spike 6.00E-05 uCirkg Sample Duplicate 3.3E-0S uCi/kg 2.3E-06 uCi/kg Method Blank ND pCrL Laboratory Control Sample 12 pCi/L 5.0E-08 5.0E-08 0.20 0.2 Run; BERTHOLD TZO_O1O4ZZA75 70 130 Run: BERTHOLD 7t OJTO4ZaA 7.2 Run; BERTHOLD 77 O_O7 O4?2A Run: BERTHOL D tZ O _O7 0422A95 70 130 Batch: i4113 0al30tOt 11.25 OaBUO7 11:25 24.3 04l30lOZ 11:25 04lg0t07 13t04 RL %REc Low Limit High Limtr Method: Sample lD; Lead 210 Sample lD: Lead 210 Sample lD: Lead 210 Sample lD: Lead 210 NERHL.65{ C070.10'193.0064MS c07040193-006AMSD MB-R82729 LCS-R82729 Sample Matrix Spike 215 pCilL Sample Makix Spike Dupticate202 pCi/L Method Blank ND pcyl Laboratory Control Sample 36.2pCi/L 105 99 ,.0 1.0 Run: PACI(ARD 31 00TR_070416870 130 RUn; PACKARD 31OoTR-070416870 130 6.4 Run: PACI(ARD 31 O0TR_07041 68 Run: PACI(ARD 31 O0TR_0204168 7A 130 Batch:14119 04/16/07 12:00 O4l16tOT IZiOO 30 04116107 1Z:OA 04l16tot 1Z:OOI T t I I T I 1001.0 Qualifiers: RL - Analyte repofting limit.ND - Not detected at ihe reporting limit. Track#CO7O4O 19O page ENEHGYLABORATOHES, tNC. . 2393saltcreekffglway(s260!J. po. Boxszss . caspq wazolzrot Free 888,235.0s15 , a0,- 'a,.oss ; -rax ibi.iil. iaie :";;i;;d"ii;sifrEi z . wwwanarsytab.com1,..' .' t. t I I I I I I U d l)o \ o-(f tp x occ ons a,ioo?o *t I.a -too)oo- I EE r#E r$E r*E.9# IH; -aDLO rEg r$fo= r #gi r EEl r $filrl or+ F- .e{t, EEslq-=cI = E G lu $E $IE:F6 lsaio uvilpunoreurnlHsnu ocr.9 oraE c-.:dE€ouP:etr!- (,, laqgg ,(esseo1fr Xuo1ele8ensprtosFlpgqeffi4! [ sJaulefuocroJaqulnN = , llEi"1E ifltslbl* c,:*lF . -- IiHE I O-lp*-qlo= = ilEBE lt€i 3 llt i* *lEEE;lE;€ Fl€i E''183 : IIEE E fl€E E Jij E iIEEEU.=E!lE< 6 il;'s,EIIE.o EI€E HJhB; [$EFlllu = lDl:i sloo s,l!o -l=6sIFt (E lEg # IE* E ;88-=eutT>E Eo E .E I oltE.o E.s;orPas EE {,9 do riE(D :c o l{doJ 0, IEI6lZI TLtrFouJoaut L.o!o D,fe l.P5lo-I-on I# Ps lE =E II-EE r l=b s #so- o ?etr99 <.. 6g J,! E,E t EEEg &"fots Eg o 8E Efi; :HH T t Tbll Free 888.t1i.0i/5 :-iiEN, EBGY LABORATOfr|ES, tNC. . ZigJ Satt Creekbll Free 888.tzi.00/5, e(',is.oitS-. Ei ib;;;;' I Energy Laboratories, lnc. I I t t I I I T T Client Name Denison Mtnes Work Order Number C07040.190 Login completed by: Corione W Shlpping container/cooter in good condition? Custody seals intact on shipping contalner/cooler? Cuslody seals intact on sampte bottles? Chain of custody prosent? Chain of custody signed when relinquished and recelved? Chain of custody agrees with sample labels? Samples in proper container/bottle? Sarnple containers intact? Sufficient sample volume for indlcated lest? AII samples received within holding flme? Containerffemp Blank temperature in compliance? Water - VOA vials have zero headspace? Water - pH acceptabls upon recelpt? AdJusted? Sample Receipt Checktist Carrier name Next Dav Air Date and Time Received: 4/4p007 09:30:00 Received by ckw Reviewed by Yes M yes Ql yes I yas EI yes EI yes M Yes M Yes M Yes E Yes El Yes M Yes n Yes n tto I Non NoI ttoD ruoI ruon t{oI Non' Hofl uoE NoE noE no fl Checked by NotPresent D Not Present n NotPresent M N/A'C No VOAviatssubmitted kl NotAppticabb EI I T I T I T t Contact and Correclive Action Comments: None TraG,<#CO7O4O 19O page 10 I I ENEBcyLAB0RAT0RE9,!N_C: ._2393saficreekllg_\way(sz60tJ. po. Box8258 , casper, wa260zrottFree,*B.p^s.arc . eq "isoirs-:-ii ibiiii,i6V':U;;;;A;;6ytr4. t.wwtuenersytab.com I Date: 23-May-07I T CLIENT:Denison Mines Projecl Early Spring Vegetation Sample Delivery Group: C070401SO CASE NARRATIVE I I t I T I I I I I I I I t THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT oRtGINAL SAMPLE SUBM TTTAL(S) fli.'[H[1.Tilfl5r*],:3}![]a" o""n returned with the data package. A copy onhe submittar(s) has been incruded SAMPLE TEMPERATURE COMPLIANCE: 4"C (*Z,C)Temperature of samples received may not be consideied propgrly preserved.by accepted standards. samples that arem'rjf,X[:"t immediatelv atter cottectiJn;rtt ;" considerda i[d"-pt"-ur" ir tl-i;;;id;;;'iffi;i" chilins process SOIUSOLID SAMPLES All samples reported on an as received basis unless otherwise indicated. PCB ANALYSIS USING EPA 505Data reported by ELI using EPA method 505 reflects the results for seven individual Aroclors. when the results for allseven ale ND (not detected), the sample meetJEpR "orpri"n". "iiGril; pCB monitoring. SUBCONTRACTING ANALYSISsubconhacting of samnle analyses to an outside l3bgratorl.lnay be-required. lf so, ENERGy LABoRATORIES wilt utilizeHf#futTfli',Jr:s-or qualifted "ont,""tiuuoi"iories foitnis 6"*illl rirv such rlboratori"" rir i" inoicatEd within the BRANCH LABORATORY LOCATIONS eli-b - Energy Laboratories, Inc. _ Billings, MTe!1-f - Ejergy Laborarories, tnc. - fOJnoErfs, fpeli-g - Energy Laboratories, lnc. - Giltette, ffi'eli-h - Energy Laboratories, tnc. - netena, f,jfeti-r - Energy Laboratories, lnc. - Rapid Citv, SOeli-t - Energy Laboratories, lnc. - Coitege Siiti*, fX CERTFICATIONS: USEPA: !al/00002: FL"?oIJlE!4Cj E-876a1;Arizona: M0699; Catifornia:021jBCAOregon: l/t/Y200001; Utah: 3072350gtS; Virgil,ii,'i00'7; Washington: G.tg03 ISO 17025 DISCLAIMER: The results of this Anaryticar Report rerate onry to the items submitted for anarysis. ENERGY l-ABoRAToRIls' l.Nc' - CASPER,WY certilies that certain method selections contained in this report meetrequirements as set forth by the above iccreoiiins-artnorities. So;; i""uitiqr"rted by ths client may not be coveredunder these certifications' All analvsis oaGi" teiirritt"o ior LdLioi-lnior**enr ihourd be cerrified in rhe samprestate of origin. prease verifi7 ELfs tenificition io*rug" by visiting wwwenergyrab.com i:tTlJ;ii^li,:iffiii"T:1fl to provide vou with this analvtical service. For additionat inrormation and services visit our The total number of pages of this report are indicated by the page number located in the lower right comer. Track#CO7O4O1gO page l'r-\ G+f ,8:+,ts {gE Iriil.eilBileIs llH./,lEEtG EIf Ebl* oE "lE. a li FsI o-lE6 o)IAE EI c-h!, ilj€H€ ilg3# iIEE frlSEE il"e I IiIsE €'l8t ;Jt= X IEE E fiEr E I*E EIEOE le= F lc $€ lE as l*E$tfi.E b IEFI =o#Et (u:-9 oo'! anP {loE -EFTE= gE Ee o E Etg E Ff HIEEF5 18Ltlt (lVI punoreunl HSnU ($cr.9 oru)?- c<H: EFfr.iJ x -crE O6- 0D ES= -Et!fi€ s.l"9 E Joql6,fBscBolE XuogE66ensp1ogp1osra1em'4y EOgASMV:adAleldureg k slaulEuoC Jo laqunN = Oljb0i e0J I AJ( .j U) t o L.9 CLt€tro> orE o E',i, -rl Jll YE niaP <.EE JEL (\lEe<1l.Er.EOEcLx &E n Exo EEIg6E=U' t I *tt;*l Td G0- toit,E r gE Tfr€c,p Tila E5Ie; 'Ed lF* -ALiO TTgs'FL6 r$E o= rE$ OE TEf?u-^ :$$l NH ENERGY LABORATORIES, lNC. ' 2393 Salt Creek Highway (8260/) " PO. Box 3258 Caspet W82602 Toll Free 888.235.0515 307.235.0515 Fax 307.234./639 , casper@energylab.mm - www:energylab.mm ANALYTICAL SUMMARY REPORT July 19,2007 Denison Mines 6425 S Hwy 191 PO Box 809 Blanding, UT 84511 Workorder No.: C07060299 Project Name: Late Spring Vegetation r--a-ta---a-aaa-t--!a-att Energy Laboratories, lnc. reoeived the following 3 samples from Denison Mines on 6t5t2oo7 for analysis. Sample lD Client Sample lD Collect Date Receiva Date Matrix Test c07060299-001 Northwest Area OOl01l07 12:38 06/05/07 Vegetation Digestion, Radiochemistry Lead 210 Radium 226 C07060299-002 Northeast Area OOlOllOT 11:08 06/05/07 Vegetation Same As Above C07060299-003 Southwest Area OO|O1l07 08:38 06/05/07 Vegetation Same As Above I I I I I I I I I T I t I I I I I T There were no problems with the analyses and all data for associated QC met EpA or laboratory specificationsexcept where noled in the Case Narrative or Report. lf you have any questions regarding these tests results, please call. Report Approved By:%M :* -1- TRACK# C07060299 ENEBGYLABORATORIES,INC 2S9SSaltCreekHrghway(82601)'PO. Box3258 Caspet WY82602 To// Free 888.235.0515 307.235.0515 , Fax 307.234./6.?9 . casper@energylab.com . www,energylab.com Client: Project: Lab !D: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines Late Spring Vegetation c07060299-001 Northwest Area Report Date: Collection Date: DateReceived: Matrix: 07t19t07 OGlO1l0712:38 06105107 Vegetation Result Units Quallflers RL MCU QCL Method Analysis Date / By I I I I T I I t I I I t I I RADIONUCLIDES . TOTAL Lead 210 Lead 210 precision (*) Radium 226 Radium 226 precision (r) 533 pCilkg 14.5 pCi/kg 51.1 pCi/kg 3.2 pC/kg 1,0 0.050 NERHL€54 NERHL-65-4 E903.0 E903.0 06125107 10:00 / dm 06125107 10:00 / dm 06127107 14:20 I crw 06127107 14:20 I crw ,{ I I I T Report Deflnltlons: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not deteded at the reporting limit. -2- TRACK# C07050299 ENERGY LABOBATORIES, INC 2393 Salt Creek Highway (82601) PO. Box 3258 . Casper, WY 82602 TollFree 888.235.0515 307.235.0515 ' Fax 307.234./699 casper@energylab.com ' wuw.energylab.com t LABORATORY ANALYTTCAL REPORT Denison Mines Late Spring Vegetation c07060299-001 Northwest Area Report Date: 07119107 Collection Date: 06/01/07 12:38 DateReceived: OOD5107 Matrix: Vegetation Client: Project: Lab lD: Client Sample lD: I I I Analyses Result Unlis Qualifierc RL MCU QCL Method Analysis Date / By RADIONUCLIDES . TOTAL Lead 210 Lead 210 precision (*) Radium 226 Radium 226 precision (r) 5.3E-04 uCi/kg 1.4E-05 uCi/kg s.1E-05 uCi/kg 3.2E-06 uCi/kg 1.2E-06 2.3E-07 NERHL-654 06t25t07 10:00 / dm NERHL-654 06t25tOZ 10:00 / dmE903.0 OOl27tO7 14:20 tcrwE903.0 06127t07 14:20 tcrwI I I t a I I I I I I I I Report Definitlons: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit.I T -3- TRACK# C07060299 ENERGY LABORATORIES, lNC. 2393 Salt Creek Htghway (82601) P.O. Box 3258 , Caspeq, W82602 To//Free888.235.05/5 307.235.0515 ' Fax 307.234./639 . casper@energylab.com ,www.energylab.com Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines Late Spring Vegetation c07060299-002 Northeast Area Report Date: Collection Date: DateReceived: Matrix: 07t19t07 0610110711:08 06ta5,t07 Vegetation Result Untts Qualifiers RL MCU QCL Method Analysis Date / By I I I I I I t I I I t I I I t I I T RADIONUCLIDES . TOTAL Lead 21Q Lead 210 precision (*) Radium 226 Radium 226 precision (*) 120 pCi/kg 6.6 pCi/kg 13.0 pCi/kS 1.6 pCi/kg 1.0 0.050 NERHL.654 NERHL{5-4 E903.0 E903.0 OGl25l07 10:00 / dm 06125107 10:00 / dm 06127107 14:20 I crw 06127107 14:20 I crw Report Definltions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. -4- TRACK# C07060299 ENERGY LABOBATOBIES, lNC. 2393 Salt Creek Hiqhway (82601) PO. Box 3258 Casper; WY82602 To// Free 888.235.05/5 307.235.0515 Fax 307.234.1639 casper@energylab.com www.energylab.com T I Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines Late Spring Vegetation c07060299-002 Northeast Area Report Date: Collection Date: DateReceived: Matrix: 07t19to7 06101lOT 11:OB 06t05t07 Vegetation Analyses Result Units Quallfiers RL MCU QCL Method Analysis Date / By I I t I I RADIONUCLIDES . TOTAL Lead 210 Lead 210 precision (t) Radium 226 Radium 226 precision (*) 1.2E-04 uCilkg 6.6E-06 uCi/kg 1.3E-05 uCi/kg 1.6E-06 uCi/kg 9.7E-07 1.9E-07 NERHL-654 06125107 10:00 / dm NERHL-65-4 OOl25l07 10:00 / dmE903.0 06127t07 14:20I clvE903.0 OGl27l07 14;20 I cruv I T I T I I I I I I I Report Deffnitlons: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. -5- TRACK# C07050299 ENERGY LABOBAfiORIES, lN€. , 2393 Salt Creek Highway (82601) . PO. Box 3258 Caspet; W82602 Toll Free 888.235.0515 307.235.05/5 , Fax 307.234.1639 casper@energylab.com www.energylab.com Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines Late Spring Vegetation c07060299-003 Southwest Area Report Date: 07119107 Collection Date: 06/01/07 08:38 DateReceived: 06105107 Matrix: Vegetation Result Unlts Qualifiers RL iltcuQCL Method Analysis Date / By I I I I t I T I I t I I I t I t RADIONUCLIDES . TOTAL Lead 210 Lead 210 precision (t) Radium 226 Radium 226 precision (t) 319 11.2 105 4.6 pCi/kg pCi/kg pCi/kS pCi/kg 1.0 0.050 NERHL-654 NERHL€54 E903.0 E903.0 OGl25l07 10:00 / dm OGl25lO7 10:00 / dm 06127107 '14:20 I crw 06127107 14:20 I crw a Report Deflnltions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit.I I -6- TRACK# C07050299 ENERG V LAEOHATORIES, INC. To// Free 888.235.05/5 307.235.05/5 zss! Sqlt-Qr-egf Hrjqhway (82601) PO. 9ox S2SB Caspet; WB?60Z Fax 307.234.1639 casper@energylab.com www.ehergylab.com I I I I Glient: Project: Lab lD: Client Sample lD: I-ABORATORY ANALYTICAL REPORT Denison Mines Late Spring Vegetation c07060299-003 Southwest Area Report Date: Colleetion Date: DateReceived: Matrix: 07t19t07 06/01/07 08:38 06105t07 Vegetation Analyses Result Unlts Qualifiers RL MCU QCL Method Analysis Date / By RADIONUCLIDES. TOTAL Lead 210 Lead 210 precision (*) Radium 226 Radium 226 precision (r) 3.2E-04 1.1E-05 1.1E-04 4.6E-06 uCi/kg uCi/kg uCi/kg uCi/kg 1.1E-06 2.3E-07 NERHL-65-4 Oi1ZSIOZ .t0:00 / dm NERHL-65-4 06tZStO7 10:00 / dmE903.0 06t27l1t 14:20 I cruvE903.0 06127t07 14:20 I cruv :t I I t I I t I I I I I I I I RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. -7- TRACK# C07060299 ENERG Y LA BORATORIES, INE. Toll Free 888.235.0515 307.235.0515 23e! Salf^grggf fllqlway (s260U p.O. Eox S2i8 Casper; Wa260sFax 307.234.1639 casper@energylab.con wwweheigytab.com- QA/QC Summary Report Client: Project: Denison Mines Late Spring Vegetation Report Date: 07119t07 Work Order: C07060299 Analyte Method; E903.0 Sample lD: MB.M226-2132 Radium 226 Sample lD: LCS-M226-2132 Radium 226 Unlts Method Blank ND pCi/L Laboratory Control Sample12 pCi/L Run: G5000W_0106228 Run: G5000W_0706228 70 130 RL %REC Low Limit High Limit RPD RPDLimit QuaI 0.2 0.20 Batch: 14879 061271Q7 15:26 0612710715:26 I I t T I t I t I t I I T Method: Sample lD: Lead 210 Sample lD: Lead 210 Sample lD: Lead 210 Sample lD: Lead 210 NERHL-654 c07060299-00rADUP c07060299-003AMS MB-R8584{ LCS-R85841 Sample Duplicate 0.00034 uCi/kg Sample Matrix Spike 0.00053 uCi/kg Method Blank ND pC:nL Laboratory Control Sample 86 pCi/L 1.0E-06 1.0E-06 1 1.0 Run: PACI(ARD 3.t OOTR_O7O62SB 45 Run: PACI(ARD 31 OOTR_OZO62EB92 70 13o Run: PACKARD 31 O0TR_O7O62SB Run: PACKARD 310OTR 070625870 130 Batch: 14879 06125107 1O:0O 30R QBl25lO7 10:OO 06125107 10:00 06125107 1O:00 :xI I I I t Qualifiers: RL - Analyte reporting limit. R - RPD exceeds advisory limit. -8- TRACK# C07050299 ND - Not detected at the reporting limit. ENEBG Y LA BORATCIBIES, INC. To// Free 888.235.0515 , 307.235.0515 zs9! Sqlt Qr9g{ Highway (82601) , PO. Box SZS? , Caspet WA260z' Fax 302234. 1639 . casper@energylab.com' www.ehergylab.com lh IG Itu llesI t? lEg EE EE'i= # E'* E# EE J dEloEl Fft?u, -- I EfiI EEEs€ gggE- ooE o. BFI W JZaob xE3g )-:tb (Ec€s!r=Ff E.,= -oSp.E- E.o630)oaoho-tEololo .LU'ftr o .oL CL =lU.} oz Jet$O ^EsseolE Xuonqe6ensplos/qogqe64y frg g ,q g 1y1y :edr(1 apureg EsJeulEuoC lo €qurnN = xoeO oq I{)t d Y tr,€E le E IE g E I3 E€ !gH,- F g iE"s9 <(EE J,F E,E QE u.EP =€E 9Ecr !*Il& taoE E-g o e- EfiE $r totr .9) cD ottFU' ==)_ EE6u TRACK# C07060299 ENEfrGVI-ABCIfrATORIES,IN€. 23939a/tCreekHighway(82601) P.O. BoN3258 Caspet WV82602 Toll Free 888.235.0515 307.235.0515 Fax 307.234./639 casper@energylab.com www.energylab.com t Energy Laboratories, lnc. I Client Name Denison Mines t Work order Number Cozo6o299 Sample Receipt Checklist Date and Time Received: 61512001 09:30:00 Received by kh 61512007 09:30:00 Reviewed byTim Hollen Shipping container/cooler in good condition? Custody seals intac{ on shipping container/cooler? Custody seals intact on sample bottles? Chain of custody present? Chain of custody signed when relinquished and received? Chain of custody agrees with sample labels? Samples in proper container/bottle? Sample containers intact? Sufficient sample volume for indicated test? All samples received within holding time? Container/Temp Blank temperature in compliance? Water - VOA vials have zero headspace? Water - pH acceptable upon receipt? Adjusted? Looin completed bv: T I oate Carier name Next Dav Air Yes M Yes E Yes E Yes M Yes M Yes M Yes M Yes El Yes El Yes M Yes M Yes E Yes n M I t I T I I t uon ruoE ruon ruon ruon non ruoE noE Non tto E Non uon NoE Checked by NotPresent ! Not Present El NotPresent M NA'C No VOA vials submitted NotApplicable M t T I I I T I Contac{ and Corrective Action Comments: None _ 10_ TBACK# C07060299 ENERGY LABOBATORIES, lNC. 2393 Salt Creek Hr!7hway (82601) PO. Box 3258 Caspet; WY 82602 Toll Free 888.235.0515 , 302235.0515 Fax 302234.1639 casper@energylab.com wwuenergylab.com I Date: 19-Jul-07 I t T T I I I I I I I I I I I T Project: Denison Mines Late Spring Vegetation CASE NARRATIVESample Delivery Group: C07060299 THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT oRTGINAL SAMPLE SUBMITTAL(S) All original sample submittals have been returned with the data package. A copy of the submittal(s) has been included and tracked in the data package. SAMPLE TEMPERATURE COMPLTANCE: 4'C (*2"C) Temperature of samples received may not be considered properly preserved by accepted standards. Samples that arehand delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun. SOIUSOLID SAMPLES All samples reported on an as received basis unless othenuise indicated. PCB ANALYSIS USING EPA 505 Data reported by ELI using EPA method 505 reflects the results for seven individual Aroclors. \Mren the results for allseven 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. lf so, ENERGY LABORATORIES will utilizeits branch laboratories or qualified contract laboratories for this service. Any such laboratories will be indicated within the Laboratory Analytical Report. BRANCH LABOMTORY LOCATIONS eli-b - Energy Laboratories, lnc. - Billings, MT eli-f - Energy Laboratories, lnc. - ldaho Falls, lD eli-g - Energy Laboratories, lnc. - Gillefte, \Aff eli-h - Energy Laboratories, lnc. - Helena, MT eli-r - Energy Laboratories, lnc. - Rapid City, SD eli-t - Energy Laboratories, lnc. - College Station, TX CERTFICATIONS: USEPA: \ /Y00002; FL-DOH NELAG: E87641 ; Arizona: M0699; Catifornia: 021 1 BCA Oregon; WY200001 ; Utah: 307235051 5; Virginia: 00057; Washington: Cl 903 ISO 17025 DISCLAIMER: The results of this Analytical Report relate only to the items submitted for analysis. ENERGY LABORATORIES, lNC. - CASPER,\ ff certifies that certain method selections contained in this report meet requirements as set forth by the above accrediting authorities. Some result requested by the client may not'be covered under these certifications. All analysis data to be submitted for regulatory enforcement snotild be certilied in the sample state of origin. Please veriff ELI's certification coverage by visiting wv{w.energylab.com ELI appreciates the opportunity to provide you with this analytical service. For additional information and services visit ourweb page www.energylab.com. The total number of pages of this report are indicated by the page number located in the lower right corner. T - 11- TRACK# C07060299 'J o Hotf ko H Eg ei El<l Er(El E] Ei Ei -arrr ct I ortltO rOt0ot>olL Lo anootr o,.gE.5 o-ooEo(, o oou la;lt'6 attooooco (U EL€ r.E !o) EoooE'toLe FzEa. IIJo UJJG 9t.-.ot t^ o-qJ H 'r,H I F+pa )H.,8 o ffi:#scFs' (El -.8o,1rnJ4ct5s=l( H6le i.8 IiEBI EEpl nE fi lr gEEIE o (Ivu punoBrunl Hsnu Jeqlo ^essBolE X uogqeBefi sgpg/s11ogie1etrfirry Fgg1g14y:edrtlepureg f sJsulEuoS lo JequrnN = Hq *3s, Cq oo EE!, =6 I o Lo-Eetr oo q, Q6J "=Jo YE nra9 <i[= JCr 6lEe < t!ErEotro-= &E o6.9 O.Hg5 E,UEEE Lo'EOt.Eo'o Lo Ef;E" C) EEig6u=.n ld tl# t3ilello ilBDI E:162l oil* ;lg!l E l;ElE6tbgI c.l ilE E IEB {EE IEElo>ILL,IO6l-c oIEElegla=I OE IEfi 153loa,l.Cl cI;E lsEl>El6tlEo li-<I ->ilo=,lo=IE€lf E tr",J.t E;ooEOutEo9 EEEo:.O,E>€b6o:o.E.cFqF. E66 [f EJE Et E €oa.l E d61' od oo3 a (J zzz F l^ le o;i la lonlE-13e q p lg lsc$s 5 ooF I,Ul- EogBEAvEcN(E- EB tro q&o o EG I ldtfi l*r - IEEq* $Eo.b gE'fitr 7> EHH:o-O e o,'E a- T'oEtr .886.. ol = E')JcE -BJCl IY E-li pu-'EF{8 E€SOtL N - otr #Hnr oo'iiE< h BfigS tL 5 =Eoo_ Fa*>)il "H= BqEiDoEoos E. Lo, Ell- (f,lctov =tl-Go6 LLCtr-_ic uJ.HOiu3o lUQgot>,8 6E o E oIL rnlrIOI lrloouJ Lou- 13 .g.=rotr. Loo.o)d rot@ Ff oi EE(6 6 o) = !)oa (LVJ punoeulnl_,{SnU E L0,([-^a:*otso)EE'r ct(l,6 E.o Jr llqt!or[ LLo-o ilE F'E6€10 o!aA Ooia :'596 ArFtr XE'.9 g 886 5E9E .Hg$c fi E$cs E 8 6 3fl I o=5o E ov(oo,oE'Eo lD=.F (1, :E Eoo uo,E(.)co N q, E =o .Eat"E (Ea a5u,oL 0)tl(Uo.o1'Et[ () IEo .oco() yrthI 6tN(\lNNtt@6'NN(o(o to to(fJ(o\r\r ,$ xE> tL lJJ Nlltb I\ tri Et- o)oo Joqlo rtesseolE'uoflsla68^ 'sp!1os/sllos re)ffi 'rlv Og A SAAV :edl1 eldurug srolrlBluoS ro taqunN N lo lt rl o -loo,(EtL lr li ll ll lll l-l ll lii r1 II I1 l* tii I or,Efro6odoiM.s.*, E@;ot=qtCJ'CJUT(I)g M,3 -;8#.{., 0i>E - ll,(U8 -O-I-a 1I,EFEL!(UE >ElCEOE tEE -)gc) ,= 'lzor - lllLOD'6q gE C)I I ENEROY lJaonATo4tEs.!-ttc_..,_139! satt creek t{shway (8260!! . po. Eox ipis , cawt wap60zrotl Freetflafii.Asrs ' soziiiasrc-; iai ibiSii.iffib ;'cispiideniicyEi;:(ffi yn4ulanewaaem ANALYTICAL SUMMARY REPORT March 07,2007 Denlson Mines 6425 S Hrrry 1St PO Box 809 Blandlng, UT 84S11 Workorder No. : COTAZA?I 1 ProJect Name: Ouarterly Radionucllde Tesling EnergyLaboralories.tnc.racelvedthefollowing2samptesfrornDenlsonr',rrnffi 9-ample ID Cllent $amplo lD Gollect Drte Recelve Date Matrlx c0202071 i-001 4gsa Frter combrned wi@Beaker I Fl€ld Paramaters Metals, Total Dlgestion, Total Metal8C0702071 1-002 485,4 Filter combined ,rfU @Beaker 7 Same As Abane There were no probtems wlth the analyses and ell dals for ansooiatod ec met EpA or laboratory epeclffcatbilexcepl where notod ln the Case Nanailve t C6il. ' li you have any querlions regardlng hes6 t€sts resull6, pleasa call. RoportApprovodBy: r"gfu; l1 lr ll lli lil lil lil ti; ILI Irl lil tiI l:l l: li, Iii lil l'i T Tr6ck#COZOZOZ 1 1 Fsge EffiTt@@ LABORATORY ANALYTICAL REPORT Denison Mines Quarterly Radionuclide Testing c0702071 1-001 Cllent Sample lD: 4853 Filter comblned with Beaker 6 ENERGY LABORATORIES, lNC. - 2399 Salt Creek Highumy (82601) ' PO Box 3258 * Casper, WY 82402 Gllent: Projecl: Lab lD: Report Date: 03107107 Collectlon Dels:. 02106107 DateRecelved : A2112/ o7 Matrix: Filter Result Unlls Quallller BL MCU OCL ll,lothod Analpls Date/ By I I I I I I I I I I T I I I T I I I T ii ilil itil T r:lilil il L] ,il l';l iJ il itit l.^.J i] i'l., ,| d*, 1t;li.l{,-t iilil ftil r'"'lj.ltl ilIJ il,i ILJ HADIONUCLIDES . TOTAL Uranlum, Activity FIELD PARAMETERS Volume 1920 pofFilter 117.183 dscl 0223/07 19:43/bas 0z06fi7 m:00 / ta€ Report Detlnltlons: RL - Analyte reporilng limit. OCL - Quallty control limit. MCL - Maximum contaminant [ev€|. ND - Not detected at the reporting lamlt. EffiT,ilfltitEAlfr,Frr!f, Lab lD: ENEBGYLABORAT0RiES,INC."2S9SsattcreekHtghway(82601)*PoBox32i8*casper,wy 82602 LABOBATOBY ANALYTICAL REPORT DEnison Mines Quarlerly Radionuclide Testing Report Dale: AglOTlOl Collectlon Oate: 02/06O7 DateRscelved : 0211 2lo7 Matrlx: FilterCllenl Sample lD: 4854 Fllter combined with Beaker 7 Rosuli Unlts Ouallllor EL MGUOCL Method Anafsle Date/ By SW6020 WnnT 19:50 / bas 0206[107 00:00 / tae HADIONUCLIDES - TOTAL Uranlum, Aclivity FIELD PARAMETERS Volume '1940 pCl/Filter 128.381 dscl ln l3 tn lit I i_I lil lil IIJ trl tiJ lil I l'l II t; lil l, lil t1 T Report Deflnllions: RL - Analyte reporling llmit. QCL- Guality control llmft. MCL - Madmum contaminanl level. ND - Not detected at the reporting limit. FNEndY L4 QOBAIAfiES, tNC., 2&,1 Safi Creek Hishwayb1tftee880.235,0515 , 807.255.05t5 , Fil(907.23d-taio. aU9! $a!.Cteek Highway ltz60 t), P.O. &ox 0858, hspa W Atffi2' Fax 3022341639 , cisper@eneryyhb.nnt, m+,aahaiylaO.nnTolt ftee 880.235,0515, 807. Client , IProlect' I Lab lDr ' ClientSample lD: LABORATORY ANALYTIGAL REPORT Denlson Mlnes Quarterly Radionuctlde Testing c07020711{01 4853 Filter combined wiih Beeker 6 Report Date: 03O7/07 Collectlon Date: 02/t}6O7 DateRoselvcd: O2A2|O7 Matrl* Filter Analyrca Regult Unlts Quallflens RL MCUOCL lrethod Analysls Date, By 02nilA7 18:43 / bas 02/08/07 00:00 , la6 6-78;ll st^,8020 FIELD 5.8E.10 uO/mL 1'17.183 dtcl TRACE METALS . DISSOLVED Umnlum, Aclivity i FIELD PARAMETERS Volumc Ii ti; Iit til Iil Iil tlJ lil lil tlI til l:1 T; lil luj I ,,r lir l3 RL. Analyle reportlng llmil. QgL - Ouality contol llmit. MCL * Marlmum conlamlnanl tavet. ND . Not detectod at tha reportlng limlt. Rcport Dellnltlons: Track#CO7OzO7 1 1 page t f,f FEf {,tif,',ffi %f##f;;?HW,9:tr1.W!'v[l#ill;:;Wi#;,f,:it:ibW,ffi ,mffiW, I Client: ProJect: Lab lD; Cllent Sample lO: LABORATORY ANALYTICAL REPORT Denlson Mines Quarterly Radlonucllde Tcsiing c07920t11-oo2 4854 Fllter comblned wilh Baaker 7 ReportDate: 0ilA7n7 collecfion Dats; 02/08o7 Dete Racelved : 021'l2lOl Matrlx: Filter Analyeos R..uli Unlli Qttallliers RL ilcuqCL Method Amlyrls Deto, By O2l23/tf 19:50, bas 0?06/07 00:00 / tae 5.2E 11 sw6020 FIETD 5.38..10 UCUmL t28.381 dsct TRACE METALS . DISSOLVEO Urrnium. Acdvlty FIELD PARAIT'ETERS llrli li.t lit lil ILi lrl liJ lil Iil til lil I,lt: II Iil til 1.1 l* T Raport Dellnllloner RL - Analyto roporting llmil. QCL - Quolity conlrol llmlt MGL- Marimum contamlnant lavcl, ND - Not dctcctcd al the reportlng llmll TrBck,#CO7O2O7,t 1 Pase I I I I I T I t I t T t t T t t T t t ! ENEnBvLABOEATOEIES,lNC.,2SSSSailCreekHishway(82801). PO, Box9258 ' Caspei W8#02 TollFraeE08.2056l5 , 507.235.0515 , Fax 9W.2J4.tBg ' casper@anagylab.con'www.onergylab.mn QA/QC $ummary Report Cllent: . Dsnison Mine!'ll rProJecI i Ouarterly Radlonucllde Testing Methodi SW6020 s.mpte lD: ltfB.ts8s3 Uranium :ti SamplelO: iLcs.lg6i3 Uranlum Samplo lD: C07020EB1.001AMS Uranlum Sample lD: C0702O6B.t.00tAMgb Uranlum Report Date: 03N7l0T Work Order: C0702an1 Mathod Bhnk gE 05 mgrfdter 6E4S Laboratory Control Samplo 0.0554 mg/[[gr O.0OOSO Sample Mairlx Spilo 0.0t22 mg{llt6r 0.00030 Sempl€ Mafix Splttc Duplicate 0.0521 mgffiltar 0.00030 111 0.t101 Run: ICPMS2€-070223A Run: |CPM62-C-070223A 75 125 Run: ICPMS2€_0?0223A 75 125 Run: lCFlvlSZ.C_ 07 OAZTA76 125 Batch: ,36i13 0Zl2N07 fit?3 Ozt23N7 18:tr0 02/2il07 19:17 OZra3/lO7 1gi2l 20 R.tult &llt8 RL %REC Low Umtt Hlgh Llmlt RpD RpoLlmlt Ouel Quallllers: RL - Analyte repolting llmlt.ND - Not detecled ot the repoillng limir. 6d! od oo.o >- s oo- ooo o d oEo F Eo :+f Jz od) 5 hi E Eo)oo oE Eo)oo o 00J o zzz trl^lGPle '8,c,.F lt l$s Est to losiD=iio#oJo J- LlJ o L (Y)t-o)oI6(ot- o@ lijtol-slc,loIOIcl(Ul-cluloo 6H !ts IJJqkFC6q -L-oo\.o--EOoooo .9 Lo'tro- !o!E r-'lE; #Ef otJtrc -3 lYEl,i, ol-lt(64.4L =J (tr EET b.EE TL8E rFlp;tr lEE oO riTi H 35 EE ,"E2EE F>39.E> 5qEtD5 HeE. ol<oodt ECtE o)#LL o)!tct$ Lo)goooEco o=ir ot LoJ(Uo@EEo o =LLo o)\t o o.Y(I,odI Etro Lo=ir o,oo)$ 6sFE od IJ. E r€-oUqr-Igs 6E lsE l= I'ILLtoolLL .E 'E6'=(totr LIotr o E(5a loaho -tf,E o.oo s oEo oo.otr >,oEo 0,ootr IEE IEc Itr; IEI lE #l{.8 EEoE iE: fi$fior IH i5 "- Hfl -5o, u)>$;@Ep €f Bqj4.2roPN6d6 IUta EEtt =o = ciLoo u,o.c =co.oEoo I i'iIEGz coo.Eoo E' Loo:a!+oEO, EExog)G JCtreo=gEoo (1y1) punoeu.rnf XSnU b€B# e'='E b UtrFtr HL-O ETEE: 9 #E$ $g#s iPgfig ". =e$cs E 38 H P0 8 8.,6668>rtLu F lifol (\toc{(\root6rE*d2i(o (oEoto>(r)(a>lf:rf .ctt,o ! .9, =ET =oE. JoAO lessEolE,uo[eteoetr '6p!tos/s[6Jelfi'!!y o 8n sMV :edI1 a;dueg sJaulBluoc Jo raqunN o lo lN t ENERGY LABORATORTES, tNC. * 2J9J Satt Creek Highway (S26Ot) * pO Box 926g * Casper, Wy I I Glient: Project: Lab lD: Client Sampte tD: LABOMTORY ANALYTICAL REPORT Denison Mines Q uarterly Radionuclide Testing c07051322-OO1 4909 Filter & Beaker Report Date: 06t2OtOl Colfection Da!'ie: 0\t23tOl DateReceived: 0\l29fiZ Matrix: FilterIAnalysesMCU QCL MethodResult Units Qualifier I Analysis Date / By RADIONUCLIDES. TOTAL L@d210 Radium 226 Radium 226 precision (r) Thorium 230 Thoriurn 230 precision (r) Uranium, Activity ND pCi/Filter 1.1 pCi/Fitter0.6 pCi/Fitter6.5 pCi/Filter1.8 pCi/Fiher 717A pCi/Filter 1.0 0.2 NERHLS54 E903.0 E903.0 E907.0 E907.0 sw6020 06101107 13;00 / dm 06111107 12:SO t ctw Ml11l0t 12:SO tcrw 06112107 15:00/dmf 06nA0715:00/dmf C6,101107 02:54 tAtts0.2 T I I il I il T I t t Report Definitions:RL - Analyte reporting limit. QCL - Quality control timit. MCL - Maximum contaminant lerel. ND - Not detected at the reporting limit.rl T I ENERGY LABORATORTES, tNC. * 239J Saft Creek Highway (S26Ot) * pO Box g2SB * Casper, Wy I I Client: Project: Lab lD: Client Sampte tD: LABORATORY ANALYTICAL REPORT Denison Mines Quarterly Radionuclide Testing c07051322-002 4910 Filter & Beaker Report Dafr; 06t20t07 Collection Date: 0St23tOZ DateReceive d: 0St29tO7 Matrix: Filter Analyses Result Units Qualifier RL MCU QCL Method Analysis Date, By RADIONUCLIDES . TOTAL Lead 210 Radium 226 Radium 226 precision (*) Thorium 230 Thorium 230 precision (*) Uranium, ActMty ND pCilFilter2.6 pCUFitter0.9 pCi/Fitter 6.0 pCi/Fitter 1.5 pCi/Fitter 6200 pCi/Fitter 1.0 0.2 0.2 0.2 NERHL-654 E903.0 E903.0 E907.0 E907.0 sw6020 06101107 13:00 /dm 06111107 13:51 /cnry OOl11l07 13:51 / cnrr 06112107 15:00 /dmf 06nA0715:00/dmf 06101107 02:58 / bws il il rl I I t I I I il Report Ilefinltions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit.I T ENERGY LABORATORIES, tNC. * 2393 Saft Creek Highway (82601) * pO Box g2s1 * Casper, Wy82602T I I Client: Project: Lab lD: Glient Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines Quarterly Radionuclide Testing c07051322-003 4911 Filter & Beaker Report Date: 06120107 Collection Date: O5l23lO7 DateReceived: 05129107 Matrix: Filter MCUQualifier RL QCL Method T I Result UnitsAnalyses Analysis Date / By RADIONUGLIDES. TOTAL Lead 210 Radium 226 Thorium 230 Uranium, Activity 1.0 0.2 0.2 0.2 ND ND ND 81.2 pCi/Filter pCi/Filter pCi/Filter pCi/Filter NERHL-65-4 O6l01tOZ .t3:00 / dmE903.0 06111102 14:51 tctwE907.0 Cf,112t07 15:00 / dmfSW6020 Ml01t0Z 03:02 / bws t I I I I t t I I I t T T Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. T ENERGY LABORATORTES, tNC. * 2393 Saft Creek Highway (g2601) * pO Box JziB * Casper, Wy I I Client: Project: Lab !D: Glient Sample lD: LABOMTORY ANALYTICAL REPORT Denison Mines Quarterly Radionuctide Testing c07051322-0er 4919 Filter & Beaker Report Date: 0612Ot07 Collection Da!,le: 05123107 DateReceived: 05129107 Matrix: FilterIMCUQCL MethodResult Units Qualifier RL Analysis Date / By 1.0 0.2 0.2 0.2 ND pCilFitterND pCi/Filter1.1 pCilFitter 0.9 pCi/Fitter 1U pCi/Fitta I I I I I I ! t I I I I I I RADIONUCLIDES. TOTAL Lend210 Radium 226 Thorium 230 Thorium 230 precision (r) Uranium, Activity NERHL.6$4 E903.0 E907.0 E907.0 sw6020 06,10110713:00/dm C6,111107 15:52 I crw 6hA0715:00/dmf @l12ll7 15:00 / dmf OOlO1l07 03:06 / bws Report Definitions: RL - Analyte reporting limit. QCL - Quality controt timit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. I "%"-c\,aO %o^ "-<^tar, % %* %.'% ,% q_oeo uQ9 b6,n Ar "&o'r v1-tJJ 'Z -o'1q otro *a(EL*, ootroo op C' =tr .9EatE?tr€ Eq>*7Eo .t2oIooL.oEoo =co+.o C) o I UJoq r o)oI TUoq IroI TIJoq (ooI UJoq rooI lJJoq r ooItUoq (elecg 6o1) ,(. !i o t ' o t Ottllti I!r a Or I a ItI I T I O o a a I o ) a !I I lc a rl?i ,.] ? a Ia Ir II It II l ?i a lrI I IIIlI I I II I I I l ? I II ? { ^ I-l '.o lElloll(f) $1fl%, bl% l+llll t?l "%2 % % %.o^ ,a(, "% ,a,g % =tr o oco (UL+,trootroo op o =tr .9!tGtrItottroCto =o ,Yoo o!tooItro oo Yo I UJoq o)oIIUoq ooI LrJoq (etecs 6ot) NoI I,JJoq (ooIuloq r ENERGY LABORATORIE_S, _lNC "-2393 Salt Creek Highway (52601) " PO. Box 3258 . Caspet WY 82602 TollFree 888.235.0515 " ' '235.05/5 " Fax 302234.1639 ' 'casperdtenergyt m . www.eheriytab.con ANALYTICAL SUMMARY REPORT March 17,2007 Denison Mines 6425 S Hwy 191 PO Box 809 Blanding, UT 84511 Workorder No.: C07030422 Project Name: 1st Quarter Surface Water 2fi0? U aaaaa9daaBatc'!fl 'E"l'!' gB *JLJ ii uAat.: ii ;. Energy Laboratories, lnc. received the following 1 sample from Denison Mines on 31912007 for analysis. Sample lD Client Sample ID Collect Date Receive Date Matrix Test CO7 030422-001 Cottonwood Creek 03lOBl07 07:33 03/09/07 Aqueous Solids, Total Dissolved Solids, Total Suspended I I I I I I t T I I t I I I I I I T There were no problems with the analyses and all data for associated QC met EPA or laboratory specifications except where noted in the Case Narrative or Report. lf you have any questions regarding these tests results, please call. Report Approved By:ffi. Z;-;FooacA+lfr .t Track#CO7O30422 paoe ENERGY LABORATORIES, lNC. ' 2393 Salt Creek Hr?hway (52601) ' PO. Box 3258 , Caspq WY A2002 To// Free 888.235.0515 ' ,' - 2-35.0515 ' Fax 307.234.1639 "-casper@energyl, m ,wwueircr'!7ytab.mm Client: Project: Lab lD: Client Sample lD; LABORATORY ANALYTICAL REPORT Denison Mines 1st Quarter Surface Water c07030422-00'l Cottonwood Creek Report Date: 03l17tol Collection Date: 03/08/01 07 :33 DateReceived: 03/09/07 Matrix: Aqueous Result Units Qualifiers RL MCUQCL Method Analysis Date / By I I I I I I I I I T I I I I I t I I PHYSICAL PROPERTIES Solids, Total Dissolved TDS @ 1BO C Solids, Total Suspended TSS @ 105 C 10 1.0 490 mg/LND mg/L RL - Analyte reporting limit, QCL - Quality control limit. 42540 C E160.2 MCL - Maximum contaminant level. ND - Not detected at the reporting limit. 03/09/07 12:35 t jaj OSlOglOT 12:321jaj TrackrfCO7O30422 paoe ENEBGY LABOBATOR-IES, _lNC ' 2393 Salt Creek Highway (82601) PO. Box 32iB " Caspet Wy A2602Toll Free 888.235.05/5 " i '2.35.05/5 ' Fax 307.234.1639 "'casper(ienergyti ,n; www.ifriigyAO.con 10 10 10 t I T I I I I QA/QC Summary Report Report Date: 03117107 Work Order: C0703O422 I lD: MBLKl_070309A Solids,lTotal Dissolved TDS @ 1BO C 1D: LCSl_070309A otal Dissolved TDS @ 180 C lD: C07030421-002AMS 'otal Dissolved TDS @ 180 C lD: C07030421-002AMSD Solids,otal Dissolved TDS @ 180 C E160.2 Method Blank ND mg/L Laboratory Control Sample 984 mg/L Sample Matrix Spike 2160 mg/L Sample Matrix Spike Duplicate 2190 mg/L Method Blank ND mg/L Sample Duplicate 9.00 mg/L Run: SLDS-BALANCE_0703098 Run: SLDS-BALANCE_0703098 90 110 Run: SLDS-BALANCE_O7O3O9B 90 110 Run: SLDS-BALANCE_O7O3O9B 90 110 1.3 Batch: 0703094-5LDS-TDS-W 03109107 11:26 O3lO9lO7 11:27 03109107 12:35 O3lO9lO712:35 10 Batch: 0703094-5LDS-TSS-W Run: SLDS-BALANCE_O7O3O9A 03/09/07 08:05 Run: SLDS-BALANCE_O7O3O9A O3tOgtOt 12:Oi 0.0 25 ND - Not detected at the reporting limit. lD: MBLKl_070309A Solids,otal Suspended TSS @ 10S C I :ffi::lD: C07030407-007ADUp Suspended TSS @ 105 C 0.7 1.0 I I I t I I I I t reporting limit. -l-rac k#co7 0?o4? 2 Paoa zzzt ill-=q*JEe(Doo Eo Et- 3E EE*l o,.c)EocoU'iocooocD (5-co EcJ.o(/)2,-itEH9b .9ao--t _L rrJ ts u}r u'EOo;z€ (Eo OSHCVILV 3=IS raql@ ,(esssolE XuooEo6enspuos/sltosJalEm,rtV i O I A S 1171y :adl1 apueg ksJauleluoc ro JaqunN = 6-- s ?< 0€ od. I LoLo. E'gDo> oE PO9iirJ L} =oYE ne9 <OE JCL NEe < I.L iirEotrcLx&EA6-q oEFs EeEy 6 tr, =l gl co EEo'C) cto Eeoc c.9([ooJ or- Eoz EE6g6t=u, ENERGY LABOBATOilIE9! lNC. ' 2393 Salt Creek Highway (8260/) " P.O. Box 3258 " Caspet; WYA2O02Tol/Free888.235.0515 " ,' -2.35.0515 ' Fax 307.234.1639 '-casper@energyli tm"wwweherbytab.con Itrlo ilEfl3 il{ €lEElg iilE ( li F,10-Itl E rlEg'I E>'t ilEEi flE3j *I#E {;lE;+ iliii IEE E iliE€ fliEEIEOI, lE= H lsg.El'Ell E I€E E l*r g lEB PlutE oIe I $l;nll! o >'=o! ;Eg EsrE}Og8B9.=eo Eo E6L E tr tJu do)(El o EEo: JEaE BE6) s?-' Te r$ fra-'aL(U ]EttE TE fir !fi1 HH -freck#c.o70a6z-2c ENERGY LABORATOTE9!-INC. ' 2393 Salt Creek Higrhway (52601) , PO. Box 3255 . Caspet WYA2602 Toll Free 888.235.05/5 ' t' - 2.35.05/5 , Fax 307.234.1639 , 'citsper@energyt; m; wwi.eiiigylaO.com I t I I I I I I I T I Laboratories, lnc. Name Denison Mines OrderNumber COTO\O422 completed by: Linda Traher Sample Receipt Checklist Carrier name Next Dav Air Date and fime Received 3t9l2OO7 09:50:00 Received by lt Reviewed by container/cooler in good condition? seals intact on shipping container/cooler? seals intact on sample botfles? of custody present? of custody signed when relinquished and received? of custody agrees with sample labels? in proper container/boftle? containers intact? sample volume for indicated test? received within holding time? emp Blank temperature in compliance? VOA vials have zero headspace? pH acceptable upon receipt? Adjusted? Yes M Yes M Yes I yes El Yes M Yes M Yes M Yes M Yes M yes El Yes Ei Yes E Yes tr ruoE wo! trlo E ruoE tto E NoE NoE t'lo E ruoE noE t'lo E ruotr ruon Checked by Not Present n Not Present f Not Present Ml 3.8'C On lce No VOA vials submitted M Not Appticabb EI and Conective Action Comments: I I I I I t T None TracR#CO7O3O4Z2 pase ENERGY LABORATORIES, lNC. . 2393 Salt Creek Highway (52601) " pO. Box 0258 . Casper Wy A2602TollFree 888.235.0515 . ,' - 2-35.05/5 ' Fax 307.234./639 "'casper@energylr m ' www.ehergytab.com Date: 17-Mar-07 Denison Mines 1st Quarter Surface Water CASE NARRATIVEple Delivery Group: C07030422 THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT IGTNAL SAMPLE SUBM TTTAL(S) original sample submittals have been returned with the data package. A copy of the submittal(s) has been includedI tracked in the data package. TEMPERATURE COMPLTANCE: 4.C (tz"C) ure of samples received may not be considered properly presgrved by accepted standards. Samples that areI delivered immediately after collection shall be considered alceptabte if thLre is evioence ih;ith";ilii';g"pl"llrlbegun. SAMPLES samples reported on an as received basis unless otherwise indicated. ANALYSIS USING EPA 505 reportejl by ELI using EPA method 505 reflects the results for seven individual Aroclors. ffien the results for allt are ND (not detected), the sample meets EPA compliance criteria for pCB monitoring. bcontracting of sample analyses to an outside laboratory may be required. lf so, ENERGY LABoRAToRIES will utilizebranch laboratories or qualified contract laboratories roitnis iervice.' Any such laboratories will be indicated within the ONTRACTING ANALYSIS tory Analytical Report. LABORATORY LOCATIONS b - Energy Laboratories, lnc. - Billings, MT f - Energy Laboratories, lnc. - ldaho Falls, lD- Energy Laboratories, lnc. - Gillette, Wy - Energy Laboratories, lnc. - Helena, MT- Energy Laboratories, lnc. - Rapid City, SD - Energy Laboratories, lnc. - College Station, TX A: wY00002; FL-DOH NELAC: EBZ641; Arizona:M0699; california: 02118cArn: V1l/200001 ; Utah; 307235051 S; Virginia: 00057; Washington: C1 903 RGY LABORATORIES, lNC. - CASPER,\AI/ certifies that certain method selections contained in this report meet i::ll*"^::,::ll:^11 bv^ lh-"-*-"y: ?g:Jgdilins authorities. some resutr requested by rhe ;rie;r ;ay not be covered' these certifications. All analysis data to be submitted for.regulatory enfoicement inouto ue certirieo in tne sampLof origin. Please verify ELI's certification coverage by visitin! www.energylab.com appreciates the opportunity to provide you with this analytical service. For additional information and services visit ourpage www.energylab.com. total number of pages of this report are indicated by the page number located in the lower right corner. Track#CO7O3O422 paoe *ir6 ffilguss x9, o.E uE EIe. I #€ Pl EEE IA-l/Dl EEe I- tr (E 1..dE r I* gEEIE .t, uvl, punoeuJnl Hsnu Je$O ^EsseolE X uoqe1e6efi sp1;og7s1;ogre1effi 4f, Sgg1g1t1y:ed{lePueg k sJeulEuoc lo JaqunN = o Lo LCL E'etr oE oU'':. J -a =olrlE nrsLlsP <E: dt.o < lL6sliotrcL= &.8 n od. oo Et,!, o(qO- Eso EEAg6t=u, tdlo l6loIIIBloIolot>lrEIElctol.c loo o. E9r;8-o EGh.9e-l;E-9Gb= E9,o-€b;E€EEO0!-(r> OGaoEEst o'= H;56CEo-a, a.r!6 OE sF>ao5E3g< o=o=EO EEoafeJEi;ooEI'ut'Eo9 EEEo=oE>€bdoo9-9FoF E60 .oo(,cao E C'!C' E €o(, I t:lo Ho lE '8fiHHsP EE gg lgEho; EE<a E*(rE rtsE Hg Ei CH I HH| ENEBGY LABORATOBIES, INC " 2393 Saft Creek Hrghway (8260/) . P.O. Box 3258 Caspq WYA2ffiz TollFree 888.235.05/5 ' 307.235.05/5 ' Fax 302234.1639 casper@energylab.com " wwwehergytab.con ANALYTICAL SUMMARY REPORT June 05, 2007 Denison Mines 6425 S Hwy 191 PO Box 809 Blanding, UT 84511 Workorder No.: C07041004 Project Name: 2nd Quarter Surface Water I t I I I I t I I t Energy Laboratories, lnc. received the following 1 sample from Denison Mines on 4t2Ot2OOZ for analysis. Sample lD Client Sample lD Gollect Date Receive Date Matrix Test C07041004-001 Cottonwood Creek 04118107 13:03 04120107 Aqueous Uranium, Dissolved Uranium, Suspended Digestion, Total Metals Gross Alpha minus Rn222 and Uraniqm Radium 226, Dissolved Radium 226, Suspended Thorium, lsotopic Thorium, Suspended lsotopic Services Provided by Lab Solids, Total Dissolved Solids, Total Suspended There were no problems with the analyses and all data for associated QC met EPA or laboratory specificationsexcept where noted in the Case Narrative or Report. lf you have any questions regarding these tests results, please call. t ReportApproved By: I I I I I I I fc. h:F*+atuffi f..a:ttcpr st+w{ Track#CO704tOO4 Page ENERG Y UIBORATOHEA INC. Toll Free 888.235.0515 307.235.05/5 2393 Salt Creek Hlghway (8260A, PO. tux 3258 . Caspe4, W82602' Fax 307.234. 1639, casper@energylab.com' wwwenergylab.com Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines 2nd Quarter Surface Water c07041004-001 Cottonwood Creek Report Date: 06/05/07 Collection DaE: O4l18lO7 13:O3 DateReceived: M|ZO|OT Matrix: Aqueous Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date / By I I I I I I I I I T t I I I I I I I PHYSICAL PROPERTIES Solids, Total Dissolved TDS @ 180 C Solids, Total Suspended TSS @ 105 C METALS. DISSOLVED Uranium METALS -SUSPENDED Uranium RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Radium 226 Thorium 230 RADIONUCLIDES . SUSPENDED Radium 226 Thorium 230 0.O112 mg/L ND mg/L 10 1.0 0.0003 470 mg/L4.0 mg/L ND pCYL ND pCi/L ND pCi/L 42540 C 42540 D E200.8 E200.8 E900.1 E903.0 E907.0 E903.0 E907.0 04123107 16:02 / bas Ml23l07 09:29 / bas Ul24lO7 22:19 I aln OS|OS|OT 02:56 / bws 05/09/07 13'.23 I res 05lO2lO7 19:16 / crw OSl01l07 15:00 / dmf O5lO2lO7 19l.'l'7 I crw O5lO1lO7 15:00 / dmf ND pCi/L ND pCi/L 0.0003 1.0 0.2 0.2 o.2 o.2 Report RL - Analyte reporting limit. Definitlons: eCL - euality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. Track#CO704 1 OO4 Page ENERGY LABOBATORIES, lNC. ' 2393 Salt Creek Highway (82601) . PO. Box 3258 ' Casper, WY82602 To//Free 888.235.0515 307.235.05/5 ' Fax 307.234.1639 . casper@energylab.com ' wwwenergylab.com QA/QC Summary Report Client: Denison Mines Project: 2nd Quarter Surface Water Repod Date: Work Order: 06t05t07 c070/.1004 Analyte Result units RL %REc Low Limit Hlgh Llmit RpD RpDLimit eual Method: A2540 C Sample lD: MBLK1_070423A Solids, Total Dissolved TDS @ 180 C Sample lD: LCSI_070423A Solids, Total Dissolved TDS @ 180 C Sample lD: C07040985-011CMS Solids, Total Dissolved TDS @ 180 C Sample lD: C07040985-01iCMSD Solids, Total Dissolved TDS @ 180 C Method Blank ND mg/L Laboratory Control Sample 1010 mg/L Sample Matrix Spike 2570 mg/L Sample Matrix Spike Duplicate 2il0 mg/L Run: BAL-I_0704238 Run: BAL-1_0704238 90 110 Run: BAL-1_0704238 90 110 Run: BAL-1_070423B 90 110 Batch: 070423A-SLDS-TDS-W O4t23tO7 15:46 04123tO715:46 O4t23tot 16t00 04123tO716:00 1.1 10 10 10 10 Method: 42540 D Sample lD: MBLK{_07U23A Solids, Total Suspended TSS @ 105 C Sample ID: C07040913-00'tBDUP Solids, Total Suspended TSS @ 105 C Method Blank ND mg/L Sample Duplicate 10.00 mg/L Run: BAL-1_070423A Run: BAL-I_0704234 Batch: 070423A-SLDS-TSS-W O4l23lO7 09:26 Ul23lO7 Ogi27 25 0.7 1.0 I I I t I I t T I I I t I t I I I I Method: E200.8 Sample lD: C07041004-001DMS Uranium Sample lD: C07041004-001DMSD Uranium Sample Matrix Spike 2.26E-05 mg/L 0.00030 Sample Matrix Spike Duplicate 2,24E-O5 ms/L 0.00030 Run: ICPMSl-C_070504A 70 130 Run: ICPMSl-C_070504A 70 130 0.0 Batch: 14312 05/05/07 03:04 05lOSlO7 O3:11 20 Method: E200.8 Sample lD: LRB Uranium Sample lD: LFB Uranium Sample lD: C07041004{0|CMS Uranium Sample lD: C07041004-001CMSD Uranium Method Blank ND mg/L 1E-05 Laboratory Fortified Blank 0.0520 mg/L 0.00030 Sample Matrix Spike 0.0624 mg/L 0.00030 Sample Matrix Spike Duplicate 0.0617 mg/L 0.00030 Run: ICPMS2-C_0704248 Run: ICPMS2-C_0704248 85 115 Run: ICPMS2-C_0704248 70 't30 Run: ICPMS2-C_0704248 70 130 102 104 't.0101 Batch: R82637 04124107 11:18 041241Q711:22 04124107 22:24 04124107 22:28 20 Qualifiers: RL - Analyte reporting limit.ND - Not detected at the reporting limit. TracR#CO7041OA4 Page ENEBGY LABOBATORTES, tNC. 2393 Salt Creek Highway (5260U ' PO. Bo.x 3258 ' Caspei W82602 riiFriiaae.igs.osti : a0z.i3s.0i15 Fax 307.234.t639 'cisper@energylab.com'wwwenergvlab.com QA/QC Summary Report Client: Denison Mines Project: 2nd Quarter Surface Water Report Date: 06/05/07 Work Order: C07041004 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method: E900.1 Sample lD: LCS-GA-0047 Gross Alpha minus Rn & U Sample lD: MB-GA-0047 Gross Alpha minus Rn & U Sample tD: C07041316-001lMS Gross Alpha minus Rn & U Sample lD: C07041316-001IMSD Gross Alpha minus Rn & U Laboratory Control Sample 19.3pCi/L Method Blank ND pCi/L Sample Matrix Spike 'l9.4pCi/L Sample Matrix Spike Duplicate 19.1pCi/L 1.0 Run: BERTHOLD 770_070501A 91 70 130 Run: BERTHOLD 770 0705014 Run: BERTHOLD 770-0705014 92 70 130 Run: BERTHOLD 770 0705014 130 2.0 Batch: GA-0047 05/09/O7 13:23 05/09/07 13:23 05/09/07 13:23 05/09/07 13:23 23.27090 1.0 1.0 13070 70 90 98 1.0 1.0 I I I I I I I I t I t I I I I I t T Method: E903.0 Sample lD: C07040140-O01AMS Radium 226 Sample lD: C07040140-001AMSD Radium 226 Sample lD: MB-RA226-2023 Radium 226 Sample lD: LCS-RA226-2023 Radium 226 Sample Matrix Spike 38 pCi/L Sample Matrix Spike Duplicate 41 pCi/L Method Blank ND pCi/L Laboratory Control Sample 27 pCi/L Batch: RA226-2023 Run: BERTHOLDTTO-0704248 O5lO2lO7 17:42 Ru n : BERTHOLD 77 0 -07 04248 o.2 0.20 130 E.9 Run: BERTHOLO 770 O70/,24B Run: BERTHOLD 77 O -07 0d.24B 107 70 130 0510210717:42 23.5 05/02/07 19:16 OS|O2|OT 19:16 Method: E907.0 Sample lD: LCS-R83272 Thorium 230 Sample lD: C07040912-001FMS Thorium 230 Sample lD: MB-R83272 Thorium 230 Laboratory Control Sample 3.7 pCi/L Sample Matrix Spike 0.03E pCi/L Method Blank ND pCi/L 0.20 0.20 0.2 76 76 Run: EGG-ORTEC-070501A 70 130 Run: EGG-ORTEC-0705014 70 130 Run: EGG-ORTEC-0705014 Batch: 14312 05/01/07 15:00 05/01/0715:00 05/01/07 15:00 ND - Not detected at the reporting limit.RL - Analyte reporting limit. TracR#CO704 1 OO4 Page ENERGY LABORATOBIES, lNC. . 2393 Salt Creek HEhway (82601) " PO. Box 3258 " Caspeti W 82602 TollFree888.235.05/5 '. 307.235.0515 , Fax 307.234.1639 . casper@energylab.mm'www.energylab.com QA/QC Summary Report Client: Denison Mines Project: 2nd Quarter Surface Water Report Date: 06/05/07 Work Order: CO7O41OO4 I I I I I I I t I t t I I t I I T T Method: Sample lD: Thorium 230 Sample lD: Thorium 230 Sample lD: Thorium 230 Sample lD: Thorium 230 E907.0 LCS-R83279 c07040987-002AMS C07040987-002AMSD MB-R83279 Laboratory Control Sample 4.zOpCilL Sample Matrix Spike 92.9pCi/L Sample Matrix Spike Duplicate 81.3pCi/L Method Blank ND pCi/L 0.20 0.2 Run: EGG-ORTEC_070501 B 70 130 Run: EGG-ORTEC_070501 B 70 130 Run: EGG-ORTEC_070501 B 70 130 13 Run: EGG-ORTEC_070501 B Batch: R83279 05/01/07 15:00 05/01/07 15:00 05/01/07 15:00 30 05/01/O7 15:00 Result Units RL %REC Low Limit High Limit RpD RpDLimit eual Qualifierc: RL - Analyte reporting limit.ND - Not detected at the reporting limit. TracR#CO7O4 1 OO4 Page ENERGY LABORATORIES, lNC. ' 2393 Salt Creek Highway (82601) P.O. Box 3258 . Caspe4 WY82602 TollFree 888.235.0515 ' 307.235.0515 Fax 307.234./6,99 casper@energylab.com , wwwenergylab.com ,lE IE ll 3llElo [s//,lEcl rE.91 o Etf EIEl8rl;ilE 6lbs dgE IE:Ibi[€ "-[;E;lt E il.E g .lo>.I L LLIOG:lE oil6 E le.BJtr=ItEIEgI E3xoisIa Gl;El!ool!9I >!,lor:lEo' lE<I ->I O=.I o= -lE -Ol9E IE H..It-p.:IJ.Clilt ioo iEO I l!,, E Io9: EBiEa''=o.Fl I EEJo.! ro.E .EF+ E; "^!o2ofo-FtE>E EE .E6f E E Ir! l-loo)If o IEfrox IPH+r*AE l3e G) *=' l5F(E: I'E* -:rtrfi tEatr5 liE IHH rld, -,8l3BoE l.= fr-E<roH (ElclI.9 orltnJ4.cl ?H= Ie i.P II rts(JlEs#lo.#El - tr (E 1..dE r lf gEEIE o (IVupunorBuJntHsnu reqlo ^esseolE Xuo0ete6onspxos/s1ro$lgpffirff frgg1g1y1y:edlleldureg k sJeulsluoc lo JequnN = Eq Eo_ (s D =o tr(L E =eb R8 uou- E .gf ETot Loo.od. o L.oLo.!,eoo> oE oqU,J E'<_5JoU6,-rtsLls,9 <.E= JCu (! Ee < llaE otro-x &.tr 1 c.o EEo'o EEfig6E=o T ENEBGY LABORATORIES, lNC. 2393 Salt Creek HEhway (82601) P.O. Box 3258 . Caspet; WY 82602 To/1Free888.235.05/5 307.235.0515 ' Fax 307.234./639 casper@energylab.com.www.energylab.com M I I I I I I I I I I Energy Laboratories, lnc. Client Name Denison Mines Work Order Number C07041004 Login completed by: Tim Hollen Shipping container/cooler in good condition? Custody seals intact on shipping container/cooler? Custody seals intact on sample bottles? Chain of custody present? Chain of custody signed when relinquished and received? Chain of custody agrees with sample labels? Samples in proper container/bottle? Sample containers intact? Sufficient sample volume for indicated test? All samples received within holding time? Container/Temp Blank temperature in compliance? Water - VOA vials have zero headspace? Water - pH acceptable upon receipt? Adjusted? Sample Receipt Checklist Date and Time Received: 4l2ol20Ol 09:15:00 Received by kh 4t2112007412012007 09:15:00 Reviewed by Roger Garling Carrier name Next Dav Air Yes M Yes El Yes n Yes M ves M Yes Ul Yes El Yes M Yes M Yes El Yes M Yes I Yes M NoE NoE NoE ruo! ruoE ruoE NoE ruoE noE NoE ruoE No[] ruoE Checked by Not Present n Not Present fl Not Present El 6.8'C On lce No VOA vials submitted Not Applicabb n T I I t I I I I Contact and Corrective Action Comments: Samole was solit. fillered. and oeserved in the ]ab. TracR,#CO7041OO4 page ENEBGY LABOBATORIES, lNC. 2393 Salt Creek Htghway (82601) PO. Box 3258 ' Caspeq W82602 To11Free888.235.0515 , 307.235.0515 ' Fax 307.234.1639 . casper@energylab.com wvwv,energylab.com Date: 0SJun-07 CLIENT: Project: Denison Mines 2nd Quarter Surface Water CASE NARRATIVESample Delivery Group: C07041004 THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT oRtGtNAL SAMPLE SUBMTTTAL(S) All original sample submittals have been returned with the data package. A copy of the submittal(s) has been included and tracked in the data package. SAMPLE TEMPERATURE COMPLIANCE: 4"C (r2"C) Temperature of samples received may not be considered properly preserved by accepted standards. Samples that are hand delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun. SOIUSOLID SAMPLES All samples reported on an as received basis unless othenrise indicated. PCB ANALYSIS USING EPA 505 Data reported by ELI using EPA method 505 reflects the results for seven individual Aroclors. Wren 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. lf 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, lnc. - Billings, MT eli-f - Energy Laboratories, lnc. - ldaho Falls, lD eli-g - Energy Laboratories, lnc. - Gillette, \A/Y eli-h - Energy Laboratories, lnc. - Helena, MT eli-r - Energy Laboratories, lnc. - Rapid City, SD eli-t - Energy Laboratories, lnc. - College Station, TX CERTFICATIONS: USEPA: \l/Y00002; FL-DOH NELAC: E87641; Arizona: M0699; California: 02118CA Oregon: \tf/200001; 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, lNC. - CASPER,\ rY certifies that certain method selections contained in this report meet requirements as set forth by the above accrediting authorities. Some result requested by the client may not be c6vered under these certifications. All analysis data to be submitted for regulatory enforcement should be certified in the samplestate of origin. Please veriff ELI's certification coverage by visiting www.energylab.com ELI appreciates the opportunity to provide you with this analytical service. For additional information and services visit our web page www.energylab.com. The total number of pages of this report are indicated by the page number located in the lower right corner. Tr acR#CO704 1 OO4 Page tdtoloto Eo 6'o Gtr6ot ooa EO€cre0a o-t6x"gc-> EE95Ego-*6;EEEEOobo!t oo.co6Ee3 OEE;Eanc!o-(, a,.oE o? 3g>o6:E9g< o :!!O=Ell EBoo. €-eJE B;ooEI'lrl Eo9 EBto=oE>€biioo.9o.caF Eoo .notc6 oE 5o.ba,c Eoo E L(y4 {) Stv.t zq Pb"- -tEEd9: fC L e,42t Ba + CIa UTI([!5FE\s: ,;I \JlEcfiE>Gd?rtEc(PCdE(g -lCooc \gvn.T "tE*d\ Tim60I IL dLEEdE -aEL iao o5J J IJ iilfo(1g4 o-14Eal .tF', G4d-Y -u..-1/9.o io\/oo t ZZ.Z 't,,'' ;4 >) frfr', E o E$#gs',r ilt{rp $f A IC I\u( bb :Fa s }H fT tt l,gt4 --:ts6A'6r € u O iriEErsE v-r dc/ l-q Aso oE6 oooE EI6c.9at o EE o6o co o B 6oot F-,29, CI.E HE F*ttro utro ffi5r (, CLF --9 CL E(uo ocI.9 orqEEfrRe FEE ^- {, E.E e-Ec-1 a aEJ=O:x(,) EDEok:85 (Eo 3nco E Eoo t oo) ooocefL (IVd punoeulnl HsnU (1yj punoreu:n1 ;euuo11 E( e6oi Is \! ItJlmT E.\/OrE€5lEx3DEi n OSHCVIIV f3S U ultI)d [l -r--r^rc\A ,.--*J YJ- E,fiz ct.9Sgr, L €rT .. (-E€ba t C .. (,EaE_eLE.6) .b1ot o oao ID oE odo xc o DEoc6r "E6d J(tooo .!4o .o6J ijc.9Eo E5ot s(Uooo.9o -eo EGa : o>ar6!er.. , JS*d;& 6 o.anrosqr^ , *o.rY#fl"fi 'Yd,v s*t/qL 55J.v{ 5ur Js$O IBssBolE X uonqeoenspltoglsg1o5rcpgrp I OEn Sn V:edllepueg E sJsuleluoc Jo raqunN = uq, ,, { E(gosa Vi u fr-8a *,,c2&-i E9-sEq q( (! =oo-ot @. PE!t o(,'6 C .? G Eol!il outoollJ o o Lopetr oE o9iiJ L> =6TE np9 <iE= JCg NE.o < tl (E otro-= &E nG-9 ()'6q< 8.H d@in z 0 =o tr 0- E = =Fo0- olr 1C .gJrou Loo-ot LoEgo.Eo'tt M€ e'f IE6!HE =oC,L) C-sans,:F 7nJO =6^<iiJZrO -cz;IJ .93E rr.3Jo;!c =€.a \, &,U a {afIL N t |o @ F o o o EHiB6E=o 'J o Ho H tso H tts, E E E E E(r Ell.l E E c HH| I te ENERoY LABORATOHIEs, TNC. ?393 Solt Creek Highwoy E26Ol PO Box 3258 Cosper, WY 82602 DATA RESULTS Quolity ossuronce/guolity control personnel hove proofed the following doto for errors. I I t I I t Voicez 3W.235.O515 o Toll Free Voicet 888.235.0515 o Fox: 307.234.1639 E-moil Address: casper@energvlab.con o Visit our web poge ot: www.enerrylob.com FACSIiATLE COVER SHEET r", t^ra,trri?nel oNsdd Tilrl- Fox Numb"r, 4S5. (.a1B. aaa4 o*., t rlBlol L; This FAX contoins d poges including this cover sheet. -t]( PRELr,l rNARy DATA I r- The following doto hos not been proofedfor errors nor hos dofq been reviewedby guolity ossuronce/guolify control personnel.lr: Itr I I I T I t Conf idential ity Stotemenf This focsimile message contoins inforrmtion from Energry Laborofories, fnc. ond nrcy be confidentiol or privileged. The infortmtion is intended to be for the use of the individuol or entity mmed obove. ff you ore not the intended recipienl , be owore thot ony disclosure, copying, distribution or useoffhecontentsoffhisnressogeisprohibited. Ifyoureceivedthiselectronicmessogeinerror,pleasenotifyusimmediotelybyreplyfoxor telephone of 1-888-235-0515, orHER/rNFORi ATrON REQUESTED Revised O7-t7-Ol