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HomeMy WebLinkAboutDRC-2008-002304 - 0901a0688081b675DEN'SONDII MINES November 28.2008 Dnboafirr{Uf }Co.D.t@trur$!.t3rfr!t0 Drmlr, CO l02al uSA Tol: !€f2&7l!l Fu:30t tD.al2t DRC -^LooZ - oo73o1 VIA FEDERAL EXPRESS Mr. Dane Finerfrock Executive Secretary Utah Radiation Control Board State of Utah Department of Environmental Quality 168 North 1950 West Salt Lake City, UT 841'14-4850 Dear Mr. Finerfrock: Re: Transmittal of the 3'd Quarter 2008 Groundwater Monitoring Report for the White Mesa Uranium Mill Enclosed are two copies of the White Mesa Uranium Mill Groundwater Monitoring Report for the 3d Quarter of 2008, as required under Parts l.F.l and 2 of the State of Utah Groundwater Discharge Permit No. UGW370004. Please note that the results for this quarters sampling do not indicate any exceedances of GWCL's for new parameters or locations that have not previously exceeded their respective concentration limits. Yours very truly,/4n2zDetsolr Mnes (USA) Conp. Steven D. Landau Manager, Environmental Affairs Cc: Ron Hochstein David Frydenlund David Turk I I I I I I I I I I T I I I I I I T I White Mesa Uranium Mill Groundwater Monitoring Report State of Utah Groundwater Discharge Permit No. UGW370004 3'd Quarter (July through September) 2008 Prepared by: Denison Mines (USA) Corp. Suite 950, lo5o 17d' Street Denver CO 80265 November,2008 I I I I I I I I I I I T I I T I I t T 1. INTRODUCTION This is the Routine Groundwater Monitoring Report, as required under Part I.F.1 of State of Utah Groundwater Discharge Permit No. 370004 (the "Permit") for the 3'd quarter of 2008 (the ooQuarter") for Denison Mines (USA) Corp's. (o'DUSA's") White Mesa Uranium Mill (the "Mill"). As required under Parts LE.l, I.E.2 and I.E.4 of the Permit, this Report includes all recorded field measurements and laboratory analyses for well monitoring conducted during the Quarter. 2. GROUNDWATER MONITORING 2.1.Samples and Measurements Taken During the Quarter A map showing the location of all groundwater monitoring wells, piezometers, existing wells and temporary chloroform contaminant investigation wells is attached under Tab A. During the Quarter, the following groundwater samples and measurements were taken during this reporting period (July through September). a) Groundwater Compliance Monitoring (D QuarterlyGroundwaterCompliance Monitoring Quarterly Groundwater Compliance Monitoring is performed in the wells listed below, pursuant to Part I.E.l. a) of the Permit. MW-l1 MW-14 MW-26 (formerly TW4- 1 5) MW-32 (formerly TW4- 1 7) (ii) Accelerated GroundwaterMonitoring. In addition to the routine quarterly monitoring referred to above, DUSA collected accelerated monthly samplings for select constituents at wells: MW-14, MW-26 and MW-32. Also, accelerated quarterly samples are collected at certain locations and for select constituents at wells: MW-l, MW-3, MW-5, MW-12, MW-l5, MW-l7, MW-l8 and MW-19. Quarterly Sampling for All New Wells Quarterly groundwater quality samples were collected from new monitoring wells in accordance with Part I.H. 4.of the Permit during the quarterly sampling event. As such, the following monitoring wells were sampled on those dates: I I I I I I I I I I I I I I I I I T I MW-20 }/4W-22 MW-23 l/4W-24 MW-25 }/{W-27 MW-28 wM-29 MW-30 MW-31 The sample collection dates for monthly samples occurred on July 9 and September 8, 2008, respectively. Routine quarterly, semi-annual and accelerated quarterly sample collection occurred during the period of August 4-13,2008. (iv) ParametersAnalyzed All routine groundwater monitoring samples were analyzed for the parameters listed in Table 2 ard Part I.E.1.c) 2)ii of the Permit, accept MW3A which is discussed in further detail in Section 2.6.3 below. The accelerated monitoring samples were analyzed for the more limited specific parameters described in Section 2.4 of this report. b) Groundwater Head Monitoring Depth to groundwater was measured in the following wells and/or piezometers, pursuant to Part I.E.2 of the Permit: (i) The quarterly groundwater compliance monitoring wells listed in paragraph 2.1.a) above were measured during the period of August 4-13, 2008 depending on location. (ii) Piezometers - P-1, P-2, P-3, P-4 and P-5, on July 8, 2008; (iiD Existing monitoring well MW-4 on August 18, 2008 and all of the temporary chloroform investigation wells, on August 26,2008; (iv) In addition to the above, depth to water measurements are routinely observed in conjunction with sampling events for all wells sampled during monthly, quarterly and semi-annual monitoring efforts, regardless of the sampling purpose. t I t I I I t I T I I I t I I I I I I 2.2 Field Data Sheets 2.3 2.3.1 Attached under Tab B are copies of all field data sheets where field data were recorded in association with the quarterly effort on August 4-13,2008 for the groundwater compliance monitoring wells listed in paragraph2.l(a) above. Attached under Tab C are copies of all field data sheets where field data were recorded in association with monthly accelerated monitoring and sampling efforts during the month of July for monitoring wells; MW-14, MW-26 and MW-32. Attached under Tab D are copies of all field data sheets where field data were recorded in association with monthly accelerated monitoring and sampling efforts during the month of September for monitoring wells; MW-14, MW-26 and MW-32. Laboratory Results -- Routine Groundwater Monitoring Copy of Laboratory Results All analytical results are provided by Energy Laboratories, the Mill's contract analytical laboratory (the "Analytical Laboratory). There are four sets of laboratory analytical results included in this Report. Samples collected for the July accelerated sampling were reported on August 1, 2008 (Tab E) Also included under this Tab are the results of a duplicate sample of MW-32 (MW-65, 7-9-08). Because the wells in the GWDP sampling program had been equipped with dedicated pumps for the November,2007 sampling, a rinsate sample is no longer collected. An analyses of a field blank was included with the monthly sampling (MW-60, 7-9-08). Samples collected for the September accelerated sampling were reported on October 13, 2008 (Tab F). Also included under this tab are the results of analyses for a duplicate sample of MW-32 (MW-65, 9-8-08). Because the wells in the GWDP sampling program had been equipped with dedicated pumps for the November,2007 sampling, a rinsate sample is no longer collected. An analyses of a field blank was included with the monthly sampling (MW-60, 9-8-08). Samples collected August 4-13 for the 2*d Quarter and Accelerated Quarterly samples under the Permit were reported in two data sets dated Septemberl8 and October 13, 2008 (Tab G). Also included under this tab are the results of analyses for duplicate samples of MW-32, and MW-22. (MW-65, 8-5-08 and MW-70, 8- I l-08, respectively). A field blank was collected for the quarterly sampling episode (MW-60, 8-1 3-08). Note: Copies of laboratory QA/QC Summaries are included with the reported data at corresponding Tabs E, F and G. 2.3.2 Analysis of Laboratory Results Under the Permit it is intended that background groundwater quality will be determined on a well-by-well basis, as defined by the mean plus second standard deviation concentration. The Mill is currently in the process of working with the Utah Division of Radiation Control and its consultant URS to establish background (including the mean plus second standard deviation) for all of the constituents being sampled under the Permit. Toward this end, a report entitled Background Groundwater Quality Report: Existing Wells For Denison Mines (USA) Corp.'s White Mesa Uranium mill Site, San Juan County Utah, Intera Inc, 2006) was transmitted to UDEQ on December 29,2006. In response to UDEQ's review, a revised report was provided to UDEQ on October 2007, Revised Background Groundwater Quality Report: Existing Wells For Denison Mines (USA) Corp.'s White Mesa Uranium mill Site, San Juan County Utah, lrrteralnc,2007. In addition to the background report for existing wells, DUSA has transmitted to UDEQ two addenda to the background report, Evaluation of Available Pre-Operational and Regional Background Data (Intera, 4ll9l07) and Background Groundwater quality Report, New Wells, For the Denison Mines (USA) Corp. White Mesa Uranium Mill Site, San Juan County, Utah (lntera,611107). Finally, in response to comments provided by UDEQ, Denison issued a revised Addendum to the Report Background Groundwater quality Report, New Wells, For the Denison Mines (USA) Corp. Wite Mesa Uranium Mill Site, San Juan County, Utah on April 30, 2008 Until such time as background is established, the Permit requires that constituent concentrations in each monitoring well shall not exceed the Groundwater Compliance Limits ("GWCLs") set out in Table 2 of the Permit. DUSA's review of the analytical results for the Quarter indicates that concentrations of the following constituents in the following monitoring wells exceeded their respective GWCLs in Table 2 of the Permit: Table 1- GWCL Exceedances for the Quarterly Sampling Monitoring Well (Water Class) Constituent GWCL (rroll.) Sample Result (ug/L) MW-14 (Class III) Uranium l5 62.4 Mansanese 400 2.020 MW-26 (Class III) Mansanese 400 1,180 Uranium I5 27.1 Chloroform 35 1.300 Dichlormethane 2.5 84 MW-32 (Class III) Manganese 400 5,240 Cadmium 2.5 2.77 Iron 5,500 9,300 6 I I I I I T I T I I t T I I I I I T I A separate Notice of these exceedances has been submitted to the Executive Secretary on August 6,2}}&,pursuant to Part I.G.l.a) of the Permit. Unless the compliance status for any constituents in any wells is determined otherwise by the Executive Secretary, the Mill will, pursuant to Part I.G.1.b)1) of the Permit, commence or continue, as the case may be, accelerated sampling of each of the foregoing constituents in its respective well on a monthly or quarterly basis, as applicable, as set forth below: Table 2 - Accelerated Monitoring Requirements as of November 28, 2008 Monitoring Well (Water Class)Constituent Normal Frequency of Samnlins Accelerated Frequency of Samnlins Commencement of Accelerated Monitorins MW-l (Class II) Tetrahydrofuran Semi-Annual Ouarterlv 4'" Ouarter 2005 Manganese Semi-Annual Ouarterly 1"'Ouarter 2006 MW-3 (Class III) Manganese Semi-Annual Ouarterly ["'Ouarter 2006 Selinium Semi-Annual Quarterly 3'" Ouarter 2006 Thallium Semi-Annual Ouarterly 4"' Ouarter 2005 Uranium Semi-Annual Quarterly 4'' Ouarter 2005 Tetrahydrofuran SemiAnnual Ouarterlv 3'" Ouarter 2006 MW-s (Class II) Manganese Semi-Annual Ouarterlv 4"' Ouarter 2005 Fluoride Semi-Annual Ouarterly 4"'Ouarter 2005 Tetrahydrofi.uan Semi-Annual Quarterly I't Ouarter 2006 MW-12 (Class III) Uranium Semi-Annual Ouarterly 4" Ouarter 2005 Tetrahvdrofuran Semi-Annual Ouarterlv 4"'Ouarter 2005 MW-14 (Class III) Manganese Quarterly Monthlv June 2005 Uranium Ouarterly Monthly June 2005 MW-15 (Class III) Selenium Semi-Annual Quarterly 4'" Ouarter 2005 Uranium Semi-Annual Ouarterly 4"'Ouarter 2005 MW-17 (Class III) Uranium Semi-Annual Ouarteilv 4"'Ouarter 2005 Thalium Semi-Annual Ouarterly l" Ouarter 2006 MW-18 (Class II) Thallium Semi-Annual Ouarterly 4'" Ouarter 2005 Uranium Semi-Annual Ouarterly 4"'Ouarter 2005 Manqanese Semi-Annual Quarterly Januarv.2008 t t I I t I I I I I I t I I I I I I t The background constituent concentrations for all of the new monitoring wells (MW-3A, MW-23, MW-24, MW-25, MW-27, MW-28, MW-29, MW-30 and MW-31) through eight quarters of sampling pursuant to Part I.H.4 of the Permit has been evaluated and reported to UDEQ under the title Background Groundwater quality Report, New Wells, For the Denison Mines (USA) Corp. White Mesa Uranium Mill Site, San Juan County, Utah (Intera, 611107) and its April 30, 2008 Addendum. This report is currently under review at UDEQ and, as such, the GWCLs for these wells have not been determined and included in the Permit. Accordingly, it is premature to determine whether or not any of the sampling results for this Quarter exceed any Permit limits for any constituents in those wells. 2.4 Laborztory Results - Accelerated Monitoring The analytical results for the accelerated monitoring of the various constituents in certain monitoring wells for the months of July and August, 2008 are provided at Tabs E and F respectively. The results of the 3'd Quarter of iOOA quarterly accelerated sampling are included under Tab G. The following table summarizes the initial sample result that triggered accelerated monitoring for each of the various constituents and the accelerated monitoring results to date. ModtoringWell filater Class)Constituent Normal Frequency of Samnlins Accelerated f,'requency of Srmnlins Commencernent of Monitorinp MW-19 (Class II)Fluoride Semi-Annual Ouarterly l" Ouarter 2006 Selenium Semi-Arurual Ouarterlv 4"'Ouarter 2005 Thallium Semi-Annual Quarterly l" Ouarter 2006 Uranium Semi-Annual Ouarterlv 4"'Ouarter 2005 MW-26 (Class III) Manganese Ouarterly Monthly June 2005 Uranium Quarterly Monthlv June 2005 Chloroform Ouarterlv Monthly June 2005 Dichloromethane Quarterly Monthlv Seotember 2005 MW-32 (Class III) Cadmium Quarterlv Monthlv June 2005 lron Ouarterly Monthly June 2005 Manganese Quarterlv Monthlv June 2005 Nickel Ouarterlv Monthlv June 2005 Gross Aloha Quarterly Monthly March 2007 I I I I Table 3 - Summary of Accelerated Monitoring Results to Date I t I I I I I I t I I I t I I Monitoring Well (Water Class)Constituent GWCL (rroll ,l Sample Event Sample Result(nofl,) MW-l (Class II) Tetrahvdrofuran I 1.5 2"" Otr 2005 85 4* Otr 2005 58 l"'otr 2006 48 2'" Otr 2006 60 3* Otr 2006 26 4" Ofi 2006 t6 l"t otr 2oo7 t4 2"" otr2007 NA 3'," Otr 2007 l5 4'" otr 2007 l6 l"t otr 2oo8 <2.0 2* Otr 2008 2.6 3'o otr 2oo8 3.2 Manganese 200 4* Otr 2005 2t5 1" otr 2006 220 2"" Otr 2006 230 3'o otr 2006 216 4"'Otr 2006 r98 l* Otr 2007 229 2"" Off2007 NA 3'" Otr 2007 30 4'" otr 2007 15 l't otr 2008 l0 2"" Otr 2008 66 3'o Otr 2008 70 MW-3 (Class III) Thallium 1.00 3'o otr 2oo5 1.60 4* Otr 2005 1.14 l"'otr 2006 l.l3 2"" otr 2006 0.99 3'' Otr 2006 l.l I 4'" otr 2006 1.16 t" otr 2007 0.99 2"" otr 2007 NA 3'" Ofi2007 1.19 4* Otr 2007 l.l5 l"'otr 2008 0.90 2^ Otr 2008 0.86 3'" Otr 2008 0.85 Uranium 15 3'' Otr 2005 35.90 4" Otr 2005 30.90 l* Otr 2006 39. l 2"" Oi[2006 27.6 3'' Otr 2006 32.O 4"'Otr 2006 28.2 1* Otr 2008 35.6 l"'otr 2007 30.2 I I I I I I I I I I I I I I I I t I I Monitoring Well fi[ater Class)Constituent GWCL (us/L)Sample Event Sample Result (us/L) MW-3 Contd.Uranium 15 2"" Otr 2007 NA 3'" otr 2oo7 17.4 4- Otr200',1 39.4 t"'otr 2008 35.6 2"u Otr 2008 ND 3'" Otr 2008 28.5 Manganese 400 4* Otr 2005 732 1'Otr 2006 1.640 2"" Otr 2006 631 3'" Otr 2006 r.370 4"' Otr 20O6 682 l" otr 2oo7 848 2"" Otr2007 NA 3'" Otr 2007 r99 4^ Ofr2007 1.950 1" otr 2oo8 1330 2no otr 2008 810 3'" Otr 2008 960 Selenium )\2* Otr 2006 25.4 3'o otr 2oo6 16.8 4"'Otr2006 27.9 1"'otr 2oo7 20.1 2"" Otr 2007 NA 3'" Otr 2OO7 33.6 4'' Otr 2007 8.9 l" otr 2oo8 13.8 2"'Otr 2008 20.t 3'Otr 2008 t9.2 Tetrahvdrofuran 23 2"" Otr 2006 26 3'o otr 2006 46 4"'Otr 2006 l1 l"'otr 2oo7 H 2"" Otr 2007 NA 3'" otr 2007 ND 4"'Ofi2007 ND l" otr 2008 6.5 2"" Otr 2008 <2.0 3'" otr 2oo8 <2.0 MW-5 (Class II)Manganese 200 2"" Otr 2005 250 4* otr 2oo5 280 t" Otr 2006 259 2"" Otr2006 228 3'' Otr 2006 237 4'" Otr 2006 228 l* Otr 2007 281 2"" Otr2007 NA 3'" otr2007 134 4"'Otr2007 142 l- Otr 2008 203 2"" otr 2008 258 3* Otr 2008 298 Fluoride 1.00 (ms/L)2"" Otr 2005 1.3 (ms/L) I I I I I I I I I I t I I I I I t I I Monitoring Well (Water Class)Constituent GWCL (us/L)Sample Event Sample Result(usil,) MW-s Contd.Fluoride 1.00 (mE/L)4"'Otr 2005 1.0 (msJL) t" otr 2006 0.9 (msJL) 2"" Otr2006 1.0 (ms/L) 3'' Otr 2006 0.9 (me/L) 4'" 01[2006 I (me/L) l* Otr 2007 l.l (ms/L ) 2"" otr 2007 NA 3'" Otr 2007 1.2 (me/l) 4^ Otf 2007 1.O(ms/L ) l* otr 2008 1.0(me/L ) 2"" Otr 2008 0.9(ms/L ) 3'" otr 2008 1.0(me/L ) Tetrahydrofuran 1 1.50 4- Otr 2005 13 1"'Otr 2006 l0 2"" Otr 2006 7.8 3- Otr 2006 ND 4'n otr 2oo6 ND l" otr 2oo7 ND 2"" ofr 2007 NA 3'" Otr 2007 ND 4"' Ott 2OOT l0 1't otr 2008 9.2 2* Otr 2008 l0 3'" Otr 2008 6.6 MW-12 (Class III) Manganese 400 2"" Otr 2005 420 4- Otr 2005 27 I't Otr 2006 t7 3'o Otr 2006 290 4* Otr 2006 92 l" otr 2007 279 2"" Otr2007 NA 3'" otr 2007 57 4"' Otr 2007 60 l"'otr 2oo8 29 2"" Otr 2008 32 3'" otr 2oo8 t9 Uranium l5 2"" Otr 2005 1s.30 4'" otr 2005 r 6.50 l"'Otr 2006 ND 2"" otr 2006 20.9 3'" Otr 2006 23.s 4" otr 2006 19.8 l* Otr 2007 t9.4 2"" otr2oo7 NA 3'," Otr 2007 8.68 4'" Otr2007 19.2 1* Otr 2008 16.8 2'" Otr 2008 16.7 3'" Otr 2008 17.8 Tetrahvdrofuran 23 2no otr 2oo5 24 4"'Otr 2005 t2 l0 I I t t I I I I I I I I I t t t I I I Monitoring WeU (Weter Class)Constituent GWCL (us/L)Sample Event Sample Result(rsll ) MW-12 Contd.Tetrahydrofuran 23 1" Otr 2006 ND 2"" Otr 2006 t6 3'" Otr 2006 18 4" otr 2006 ND l" Otr 2007 38 2"" Otr2007 NA 3'" Oh 2007 ND 4'o otr2007 ND l" otr 2oo8 <2.0 2^'" Otr 2008 3.0 3'Otr 2008 <2.0 MW-14 (Class III)Manganese 400 l* oh 2005 1,860 June 2005 I,840 Julv 2005 2,000 Aue.2005 l.900 Seot. 2005 2,110 Oct.2005 1.950 Nov.2005 1,880 Dec.2005 1.960 Jan.2006 2.060 Feb.2006 1.940 Mar.2OO6 2,070 April2006 2.100 Mav 2006 2,000 June 2006 1.650 Julv.2006 1.590 Aus..2006 1,870 Seot. 2006 1.860 Ocl2006 I.960 Nov.2006 t,790 Dec.2006 1.960 Jan.2007 r.970 Feb.2007 t,940 Mar.2007 l.930 Aoril2007 2020 Mav2O07 1940 June 2007 NA Julv 2007 NA Aus..2007 2.010 Seot.2007 2,060 Oct.2007 2,120 Nov.2007 2"380 Dec.2007 2.290 Jan. 2008 2200 Feb.2008 2080 Mar.2008 2280 April2008 2.160 Mav 2008 2.420 June 2008 2.290 Julv 2008 2.150 Aus.2008 2,020 Seot.2008 2-O30 11 I I I I I I I I I I I I I t I I I I I Monitoring Well (Water Class)Constituent GWCL (us/L)Sample Event Sample Result (us/L) MW-14 Contd.Uranium l5 l" Otr 2005 65. I June 2005 s8.9 Julv 2005 65.5 Aus. 2005 66.s Sept.2005 67.5 Oct.2005 70.1 Nov.2005 69.7 Dec.2005 67.6 Jan. 2006 74.8 Feb.2006 69.2 Mar.2006 69.4 Aoril2006 64.0 Mav 2006 70.3 June 2006 69.2 Julv. 2006 71.8 Aus.2006 64.7 Sept. 2006 69.0 Oct.2006 66.4 Nov.2006 65.5 Dec.2006 68.4 Jan. 2007 24.9 Feb. 2007 43.8 Man2007 42.8 April2007 18.8 Mav2007 62.4 June 2001 NA Julv 2007 NA Aueust 2007 ND Seotember 2007 70.5 October 2007 68.6 November 2007 6r.6 December 2007 60.7 Januarv" 2008 65. I February 2008 64.1 March 2008 ND April2008 61.8 Mav 2008 62.6 June 2008 61.3 Julv 2008 64.8 Aue.2008 62.4 Sept.2008 63.0 MW-f5 (Class III)Selenium 25 2'^" Otr 2005 79 4'" Otr 2005 92.s I't otr 2006 02 2* Qff2006 t7 3'" Otr 2006 t2 4^ Otr 2006 t2 t"'otr 2007 89.6 2"" Oft 2007 NA 3'Otr 2007 944 0fi2007 94 l" otr 2oo8 ll3 t2 I I I I t I I I I I I I I I I I I I I Monitoring Well fWeter Class)Constituent GWCL (us/L)Sample Event Sample Result (no/L) MW-15 Contd.Selenium 25 2"" Otr 2008 106 3'o otr 2008 ll8 Uranium t5 2"" Otr 2005 45.3 4'n otr 2005 47.7 I't otr 2006 50.4 2"" Ott 2006 47.8 3'Otr 2006 50. r 4"'Otr 2006 51.6 l"'otr 2007 46.5 2"" OtI2007 NA 3'" Otr 2007 28.6 4'n otr2007 51.0 l" otr 2008 48.3 2"" Otr 2008 43.9 3'Otr 2008 45.7 MW-17 (Class III) Uranium 15 2"" Otr 2005 23.4 4'n otr 2oo5 3t.2 l" Otr 2006 28.2 2"" Otr 2006 32.2 3'" Otr 2006 30.6 4'" otr2006 30.2 l" otr 2007 23.4 2"" otr 200'l 18.2 3'" Otr2007 20.1 4"'Off2007 31.0 l"'otr 2008 28.3 2"" Otr 2008 29.4 3'o otr 2oo8 28.9 MW-18 (Class II) Thallium 0.5 2* Otr 2005 1.0 4" otr 2005 0.95 l"'Otr 2006 t.46 2"" otr 2006 1.3 3- Otr 2006 0.83 4"'Otr 2006 l.0l l"'otr 2007 1.85 2"" Otr 20O?NA 3'" Otr2007 0.96 4'" otr 2007 0.89 t't Otr 2008 1.ll 2"" Otr 2008 t.34 3'' Otr 2008 1.33 Uranium 7.5 2"" Otr 2005 39 4* Otr 2005 39 l" otr 2006 42.6 2"o otr 2006 32.2 3'" Otr 2006 39.6 4- Otr 2006 42.2 t" otr 2oo7 46.9 2"" Qtr 2007 NA 3'" otr2007 36.5 t3 T I t I I I t I I I t I I I I I I I I Monitoring Well (Water Class)Constituent GWCL (noll.)Sample Event Sample Result (us/L) MW-18 Contd Uranium 7.5 4'" otr2007 39.2 t" otr 2oo8 42.4 2* Otr 2008 44.8 3'" Otr 2008 4r.4 Manganese 200 l" otr 2oo8 r54 2"" Otr 2008 119 3'" Otr 2008 r36 MW-19 (Class II Fluoride 1.0 (ms/L)4"'Otr 2005 I (me/L) 2no Otr 2006 I (me/L) 3'" Otr 2006 I (ms/L) 4'n otr 2006 3 (me/L) l" otr 2oo7 4 (ms./L\ 2"" Otr2007 NA 3'" otr2007 1.3(me/L) 4"' Otr 2007 1.1(me/L) l" otr 2008 1.1(ms/L) 2"" Otr 2008 1.1 3'o otr 2oo8 1.1 Selenium t2.5 2"" Otr 2005 t8 4'' Otr 2005 12.3 l" c)tr 2006 14.3 2"" Olf2006 12.0 3'" Otr 2006 t2.o 4'' otr 2006 tt.2 l" otr 2007 11.1 2"" otr 2oo7 NA 3'Otr 2007 l l.9 4'n Otr 2007 10.8 I't otr 2oo8 10.6 2"" Otr 2008 10.2 3'o otr 2008 9.2 Thallium 0.5 4"' Otr 2005 0.57 1" c)tr 2006 ND 2"" Otr 2006 0.7 3'" Otr 2006 0.55 4* Otr 2006 0.68 1" otr 2oo7 ND 2"" Otr 2007 NA 3'" Otr 2007 0.53 4'" otr 2007 0.52 l* Otr 2008 o.52 2"" Off 2008 ND 3'o otr 2oo8 ND Uranium 7.5 2^ Otr 2005 11.6 4'" Otr 2005 1 1.3 l" Otr 2006 12.8 2'" Otr 2006 11.5 3'" Otr 2006 8.52 4'" Otr 2006 10.1 I" Qtr 2007 9.37 2"" Otr 2007 NA t4 I T I I I I I I I I I I I I I T I t I Monitoring Well (Water Class)Constituent GWCL (up/L)Sample Event Sample Result (us1l) MW-19 Contd.Uranium 7.5 3'" otr2007 7.76 4"' Otr 2OO7 7.53 1"'Otr 2008 7.32 2"" Otr 2008 6.76 3'o otr 2008 6.8 MW-26 (Class II) Manganese 400 l* Otr 2005 1.350 June 2005 956 Julv 2005 100 Aus.2005 .430 Sept.2005 160 Oct.2005 .410 Nov.2005 949 Dec.2005 1.030 Jan.2006 951 Feb. 2006 874 Mar.2006 .210 April2006 100 Mav 2006 280 June 2006 .300 Julv.2006 95 Aue.2006 902 Seot.2006 1.330 Oct..2006 1,610 Nov.2006 l "500 Dec.2006 l,080 Ian.2007 769 Feb,2007 979 Mar.2007 1.130 Aoril.2007 1.410 Mav.2007 910 June- 2007 1.230 Julv 2007 l.280 Aus.2007 728 Seot.2007 NS Oct.2007 r.190 Nov.2007 1.150 Dec,.2007 1.410 Januarv.2008 853 Februarv 2008 1.330 March 2008 1.390 April2008 1,010 Mav 2008 1.170 June 2008 1.130 Julv 2008 t.l l0 Aus.2008 1.180 Sept. 2008 1.140 Uranium l5 l't otr 2oo5 22.4 June 2005 9.5 Julv 2005 12.6 Aus.2005 26.0 Sept.2005 17.4 l5 I T I T I I I I I I I T I T I I I I I Monitoring Well (Water Class)Constituent GWCL /uo/Ll Sample Event Sample Result (us/t,), MW-26 Contd Uranium t5 Oct.2005 22.7 Nov.2005 t2.l Dec.2005 t2.3 Jan.2006 10.7 Feb.2006 9.9 Mar.2006 17.9 April 2006 t4 Mav 2006 2.s June 2006 24.6 Julv 2006 17.6 Aus.2006 10.5 Sept.2006 23.0 Oct.2006 34.7 Nov.2006 32.6 Dec.2006 20.9 Ian.2007 22.6 Feb.2007 44.2 Mar.2007 42.8 April.2007 36.4 Mav,2007 ll9 June,2007 24.5 Iulv 2007 38.6 Aueust 2007 21.2 September 2007 NS October 2007 47.0 November 2007 42.0 December 2007 47.6 Januarv.2008 20.1 Februarv 2008 59.2 March 2008 46.3 April2008 t7.2 Mav 2008 20.7 June 2008 21.7 Julv 2008 23.4 Aus.2008 27.1 Sept. 2008 29.4 Chloroform 35 l"'otr 2oo5 230 June 2005 430 Julv 2005 260 Aue.2005 780 Sept.2005 810 Oct.2005 960 Nov.2005 I.100 Dec.2005 1.200 Jan. 2006 1,300 Feb.2006 860 Mar.2006 1.200 Aoril2006 1,200 Mav 2006 1-100 June 2006 260 Julv,2006 7-800 Aue.2006 980 l6 I T t I I I I I I I I I I I I I I I I Monitoring Well (Water Class)Constituent GWCL (us/L)Sample Event Sample Result(uofl,) MW-26 Contd.Chloroform 35 Seot. 2006 I,200 Oct.2006 1,400 Nov.2006 950 Dec.2006 1.100 Jan.200'l 5.700 Feb.2007 4.400 Mar.2007 I.600 Aoril.2007 2.100 Mav.2007 2,400 June.2007 660 Julv 2007 I,100 Ausust 2007 920 Seotember 2007 NS October 2007 820 November 2007 1.400 December 2007 1.400 Januarv.2008 830 Februarv 2008 580 March 2008 1.300 Aoril2008 1"600 Mav 2008 1.200 June 2008 2.000 Julv 2008 1.600 Aus.2008 1.300 Seot.2008 460 Dichloromethane 2.5 June 2005 5.4 Aus.2005 11.0 Sept.2005 5.9 Oct.2005 9.8 Nov.2005 7.6 Dec.2005 t2 Jan.2006 6.9 Feb.2006 4.8 Mar.2006 4.6 Aoril.2006 t4 Mav.2006 l1 June. 2006 2.s Julv, 2006 ND Aus. 2006 t2 Sept.2006 25 Oct.,2006 3l Nov.2006 l5 Dec.,2006 2.6 Iat 2O0'7 ND Feb.2007 25 Mar.2007 26 April.2007 JJ Mav.2007 28 June- 2007 5l Julv 2007 t4 Aueust 2007 9.0 September 2007 NS t7 I I I I I I t t t I I t I I I I I I I Monitoring Well (Water Class)Constituent GWCL (us/L)Sample Event Sample Result (us/L) MW-26 Contd Dichloromethane 2.5 October 2007 1.2 November 2007 t8 December 2007 22 Januarv.2008 l5 February 2008 l5 March 2008 66 April2008 47 Mav 2008 JJ June 2008 ll0 Julv 2008 82 AuE.2008 84 Sept.2008 1l Tetrahvdrofuran 23 4" otr 2oo5 55 Jan.2006 ND Feb.2006 ND Mar.2006 ND April 2006 ND Mav 2006 ND June 2006 ND Julv 2006 ND Aue.2006 ND Sept. 2006 ND Oct.2006 ND Nov.2006 ND Dec.2006 ND Jan.2OO7 ND Feb.2007 ND Mar.2007 ND April.2007 ND Mav,2007 ND June. 2007 ND Julv 2007 ND Ausust 2007 ND September 2007 NS October 2007 ND November 2007 ND December 2007 ND MW-32 Cadmium 2.5 1" otr 2005 23.8 June 2005 1.7 Julv 2005 2.1 Aus.2005 2.75 Sept. 2005 2.95 Oct.2005 2.t6 Nov.2005 2.07 Dec.2005 1.0 Jan.2006 t.t4 Feb.2006 2.32 Mar.2006 2.58 April2006 2.96 Mav 2006 1.84 June 2006 0.8 Julv.2006 3.0 18 T I t I I I I I t I I I I t I I I I I Monitoring Well (Water Class)Constituent GWCL (us/L)Sample Event Sample Result (us/L) MW-32 Contd.Cadmium )\Aue.2006 1.44 Sept.2006 0.96 Oct.2006 ND Nov.2006 0.9 Dec.2006 1.44 Ian.2007 3.0 Feb.2007 ND Mar.2007 2.42 April.2007 2.24 Mav.2007 6.18 June, 2007 ND Julv" 2007 2.83 Ausust.2007 t.82 Seotember 2007 1. l8 October 2007 t.20 November 2007 t.47 December 2007 1.8 I Januarv. 2008 t.32 February 2008 ND March 2008 1.90 April2008 3.0 Mav 2008 2.08 June 2008 2.21 July 2008 2.4 Aue.2008 2.77 Seot.2008 2.45 Mansanese 400 t"'otr 2005 3.740 June 2005 4.220 Julv 2005 4.720 Aup.2005 4,670 Sept.2005 4.580 Oct.2005 4.590 Nov.2005 4,530 Dec.2005 4.340 Jan.2006 s,090 Feb.2006 4.r60 Mar.2006 5,090 April2006 5,070 Mav 2006 4,840 June 2006 4.680 Julv, 2006 4,540 Aue.2006 s.1 60 Seot. 2006 4.690 Oct.2006 4"790 Nov.2006 4.830 Dec.2006 4,920 Ian.2OO7 5.040 Feb.2007 4.940 Mar.2007 4.920 April.2007 5-450 Mav.2007 4.920 June. 2007 5.470 l9 I I I I I I I I I I t I I I I I I I I Monitoring Well (Water Class)Constituent GWCL (uo/L)Sample Event Sample Result (us/L) MW-32 Contd.Manganese 400 Julv 2007 5490 Auzust 2007 4.820 September 2007 4.790 October 2007 5.170 November 2007 5,583 December 2007 5.050 Januarv.2008 4,9s0 Februarv 2008 5.010 March 2008 5,660 Aoril2008 5.500 Mav 2008 5,810 June 2008 5"400 Julv 2008 5.1 60 Aue.2008 5,240 Sept. 2008 5.130 Nickel 50 l" otr 2oo5 71.0 June 2005 54.0 Julv 2005 63.0 Aup.2005 64.0 Seot.2005 67.0 Oct.2005 63.0 Nov.2005 62.0 Dec.2005 51.0 Jan. 2006 69.0 Feb.2006 54.0 Mar.2006 68.0 Aoril.2006 70.0 Mav.2006 64.0 June,2006 52 Julv 2006 74 Aup.2006 59 Seot.. 2006 53 Oct.. 2006 t2 Nov.- 2006 56 Dec.2006 62 Ian.2007 59 Feb.2007 5l Mar.2007 74 Aoril.2007 64 Mav.2007 127 June. 2007 94 Julv 2007 85 Aueust 2007 65 September 2007 62 October 2007 67 November 2007 57 December 2007 66 January.2008 62 Februarv 2008 59 March 2008 59 Aoril2008 6l Mav 2008 64 20 Monitoring Well (Water Class)Constituent GWCL (us/L)Sample Event Sample Result (us/L) MW-32 Contd.Nickel 50 June 2008 62 Julv 2008 65 Aue.2008 66 Seot.2008 60 2.5 Depth To Groundwater Readings And Water Table Contour Map A listing of groundwater level readings for the Quarter (shown as depth to groundwater in feet) is included under Tab H. Also included under Tab H is a water table contour map, which provides the location and identity of all of the wells and piezometers listed in items 2.1(b) above for which depth to groundwater is recorded. The groundwater elevation at each well and piezometer, measured in feet above mean sea level, and isocontour lines to delineate groundwater flow directions observed during the Quarter's sampling event is displayed on the map. 2.6 Quatity Assurance Evaluation And Data Validation Quality assurance evaluation and data validation procedures in effect at the time of sampling were followed. These involve three basic types of evaluations: field QC checks; Analytical Laboratory QA checks; and checks performed by DUSA personnel, as described below. 2.6.1 Field OC Checks The following QC samples were generated by Mill personnel and submitted to the Analytical Laboratory in order to assess the quality of data resulting from the field sampling program: a) July Monthly Accelerated Sampling: -One duplicate sample of MW-32 (MW-65, collected 719108) -One field blank (MW-60, collected 719108) -One trip blank provided by the Anallical Laboratory and sent with the samples received by the Analytical Laboratory on7lTll08. b) September Monthly Accelerated Sampling: -One duplicate sample of MW-32 (MW-65, collected 9/8/08) -One field blank (MW-60, collected 9/8/08) -One trip blank provided by the Analytical Laboratory and sent with the samples received by the Analytical Laboratory on 9/11/08. c) August Quarterly/Accelerated Sampling: - Two duplicate samples of MW-32 and MW-22 (MW-65 & MW70, collected 8/5/08 and 8/1 1/08, respectively) - One field blank (MW-60, collected 8/13/08) 2l I I I I I t t I I I I t I I I I I I I -Two trip blanks provided by the Analytical Laboratory and sent with the samples received by the Analytical Laboratory on 8/7/08 and 8/15/08. These QC samples were sent blind to the Analytical Laboratory and analyzed for the same parameters as permit-required samples. 2.6.2 Analytical Laboratory OA/QC Procedures The Analytical Laboratory has provided summary reports of the analytical quality control/quality assurance (QA/QC) measurernents necessary to maintain conformance with NELAC certification and reporting protocol. The Analytical Laboratory QA/QC Summary Reports, including copies of the Mill's Chain of Custody and Analytical Request Record forms for each set of Analytical Results, follow the analytical results under Tabs E to G. 2.6.3 Mill OA Manager Review The Mill QA Manager, which for the purposes of this Report was DUSA's Manager of Environmental Affairs, performed three types of reviews: a determination of whether Mill sampling personnel followed Mill sampling procedures; a review of the results from the Field QC Checks; and a review of the Analytical Laboratory QA/QC analysis. The results of the QA Manager's review are discussed below. a) Adherence to Mill Sampling SOPs On a review of adherence by Mill personnel to the existing sampling standard operating procedures (SOPs), the QA Manager observed that QA/QC requirements established in the Groundwater Monitoring Quality Assurance Plan were being adhered to and that the SOP's were implemented. l. Results fromfield QC checl<s (i) July Sampling The results of duplicate QC checks for the July sampling indicated that the duplicated samples were within the Relative Percent Difference goal of 20oh (see Table 4). The information from the Laboratory QA/QC Summary Report indicates that RPD and recovery data at the Laboratory were within acceptable limits as well. The only qualifications attached to these data by the laboratory were where reporting limits (RL) were increased due to matrix interference, however, in the reported value was well above the re-established RL. All samples were received within acceptable temperature specification and holding time requirements were adhered to. 22 I I I I I T I I I I I t I I I T t I t Table 4-QC Evaluation July Sampling Event Constituent Duolicate Evaluation MW-32 Dup MW-65 RPD % Cadrnium 2.4 2.4 0 Iron 9,980 9-990 -0.1 Manganese 5.610 5.600 0.2 Nickel 65 74 r5.8 Gross Alpha 3.5 +/- 0.4 3.7 +/- 0.3 <2 (ii) SeptemberSampling The results of duplicate QC checks for the September sampling indicated that the duplicated samples were within the Relative Percent Difference goal of 20Yo (see Table 5). The information from the Laboratory QA/QC Summary Report indicates that RPD and recovery data at the Laboratory were within acceptable limits as well. The only qualifications attached to these data by the laboratory were where reporting limits (RL) were increased due to matrix interference, however, in the reported value was well above the re-established RL. All samples were received within acceptable temperature specification and holding time requirements were adhered to. Table s-QC Evaluation September Sampling Event Constituent Duplicate Evaluation MW-32 Dup MW-65 RPD o/o Cadmiurn 238 238 0 Iron 8.800 8.800 0 Manganese s,030 5,030 0 Nickel 60 60 0 Gross Alpha t.4 +t- 0.6 3.4 +l- 0.3 <2 (iii) August (Quarterly/Accelerated) Sampling The results of duplicate QC checks for the quarterly sampling indicated that none of the Relative Percent Difference (RPD) value's of 20Yo. See Table 6. This is a marked improvement over previous periods during 2008 (i.e. l't Quarter data indicated 11 instances where the RPD value exceeded 20%).In addition, all sample sets sent to Energy Labs and AWAL were received within the current 4" C limit for acceptance. It is noted that, while not inconsistent with the Permit, the sampling technicians inadvertently failed to analyzed wells 3 and 3,A. for the complete list of parameters indicated in Table II of the Permit. This matter was discussed with UDEQ representatives on November 25,2008 and described more fully in correspondence to the Division on November 26,2008. 23 I I I I I I T I I I I I I I I I I I I Table 6-QC Evaluation 3'd Quarter 2008 Sampling Event Constituent MW"32 MW-65 %RPD MW-22 MW-70 %RPD Carbonate ND ND 0 ND ND 0 Bicarbonate 420 420 0 489 484 1.02 Calcium 550 560 1.8 499 503 -0.8 Chloride 27 30 -10.5 58 57 1.7 Fluoride 0.2 0.2 0 2.9 2.9 0 Maenesium 246 249 t.2 1080 I 070 0.9 Nitrosen-Armnonia 0.44 0.46 -4.44 0.2 0.2 0 Nitrosen-Nitrate ND ND 0 3.83 4.04 -5.34 Potassium 14.9 14.9 0 24.9 24.2 2.9 Sodium 24t 237 1.7 259 259 0 Sulfate 2470 2470 0 5870 5490 6.7 Lab pH 6.53 6.48 0.77 6.27 6.28 -0.16 TDS 3850 37 t0 3.7 7260 7590 -4.4 Arsenic ND ND 0 ND ND 0 Berylliurn ND ND 0 2.69 2.44 9.75 Cadmiurn 2.77 2.7 2.s6 8 1.9 84. I -2.7 Chromium ND ND 0 ND ND 0 Cobalt 50 5l -2.0 264 277 -4.8 Coooer ND ND 0 ND ND 0 lron 9300 9540 t.6 ND ND 0 Lead ND ND 0 ND ND 0 Mansanese 5240 5360 -2.56 32500 32800 -0.9 Mercury ND ND 0 ND ND 0 Molvbdenun l1 ll 0 233 246 -5.4 Nickel 66 67 -l.5 135 t37 -1.5 Selenium ND ND 0 9.8 10.7 -8.8 Silver ND ND 0 ND ND 0 Thalliurn ND ND 0 1.04 1.13 -8.3 Tin ND ND 0 ND ND 0 Uranium 2.7 2.85 -5.41 46.7 54.4 - 15.3 Vanadiurn ND ND 0 ND ND 0 Zinc 144 143 0.7 524 542 -3.4 Gross Alpha*2.6 3.2 <2 3.t 4.0 <2 Acetone ND ND 0 ND ND 0 Benzene ND ND 0 ND ND 0 Carbon tetrachloride ND ND 0 ND ND 0 Chloroform ND ND 0 ND ND 0 Chloromethane ND ND 0 ND ND 0 MEK ND ND 0 ND ND 0 Methylene Chloride ND ND U ND ND 0 Naohthalene ND ND 0 ND ND 0 Tetrahydrofuran ND ND 0 ND ND 0 Toluene ND ND 0 ND ND 0 Xvlenes ND ND 0 ND ND 0* RPD Equation for Gross Alpha Satisfied if differential analysis of reported values and counting error is <2 c) Review of Analytical Laboratory QA/QC Analysis The QA Manager reviewed the Analytical Laboratory's QA/QC Summary Reports and made the following conclusions; 24 Parameter Method Carbonate as CO3, Bicarbonate as HCO3 A23208 Calcium. masnesium. potassium. sodium. iron 8200.7 Chloride A4500-Cl B Fluoride A4s00-F c Nitrosen. Ammonia as N A45OO-NH3 G Nitrosen. Nitrate + Nitrite as N 8353.2 Sulfate A4500-SO4 E TDS A2s40 C Metals (other than iron)E200.8 Gross Alpha E900.1 VOCs sw82608 (i)Check samples were analyzed for all methods used in analyzing the groundwater samples. These methods were: Table 7 - Analytical Methods Utilized (ii) The check samples included at least the following: a method blank, a laboratory control spike, a matrix spike and a matrix spike duplicate, or the equivalent, where applicable. In this context, it should be noted that: o Laboratory fortified blanks are equivalent to laboratory control spikes, laboratory reagent blanks are equivalent to method blanks, post digestion spikes are equivalent to matrix spikes and post digestion spike duplicates are equivalent to matrix spike duplicates; ando For method E900.1, used to determine gross alpha, a sample duplicate was used instead of a matrix spike duplicate; (iii) All qualifiers, and the corresponding explanations reported in the QA/QC Summary Reports for any of the check samples for any of the analytical methods were reviewed by the QA Manager. With regard to laboratory qualifiers, there were some instances where a reporting limit (RL) was increased due to matrix interference, however, in these cases the reported value was well above the re-established RL or, in those instances where the result was less than the re-established RL, the RL was still less than the GWCL. Denison experienced some instances of holding time excursions, however, sufficient time was available to resample in those cases and the reported data are compliant with holding time requirements. (vi) The information from the Laboratory QA/QC Summary Reports indicate that RPD at the Laboratory primarliy within acceptable limits. However, there were some instances (e.g. Xylene surrogate MW-65, as well as Acetone and Xylene QA/QC summary report, where spike recovery data fell slightly outside of the stated limits135% and l32Yo respectively. 25 2.7 I t I I I T I t I t I t I I I I li I I d) Corrective Actions During this report period it was noted that field blank water continues to yield trace volatile organic presence (i.e. Chloroform for this period). This matter is being investigated by the QA manager and corrective measures will be reported as required as an element of the 4ft Quarter report. Electronic Data Files and Format DUSA has provided to the Executive Secre tary an electronic copy of all laboratory results for groundwater quality monitoring conducted during the Quarter in Comma Separated Values (CSV). A copy of the transmittal e-mail is included under Tab I. 3.0 SIGNATURE AI\D CERTIFICATION This document was prepared by Denison Mines (USA) Corp. on November 28, 2008. DENISON M David C. Frydenlund Vice President, Regulatory Affairs and Counsel Certification: I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and for knowing violations.' Vice President, Regulatory Affairs and Counsel Denison Mines (USA) Corp. 26 ru4xord(h glofllcq) zooz'IBn Pqqlttr \k iloil ft4ro1uorx peprd lppdurq nal ,rffi, 9,0?t dY P€Ftu4 tei rAryoUnupeppdlrsrodurq I S00Z'ird'Vp€fqs{ l_prn Our.rwrou parplod ,UI" ,qerroze.dpepr*, ,.J. // poo eppl;n I ran0woguour prprodr"emrisq "'9,// 7 neilowqPoutPaPrcd -t// !?t// lffiYxfiIM,//,//,// ra3J t{ a-Ivcs.//.// fir0e 0// --?-.r)' a.:' .?Nt// l.\'tNI g-tf, .\ lrtt\lrlsgtr I '"{:. -5 // tl // z--//\\\\ tl t\\ll SI|S VS3n sIHm sNotwcol 113rn o3Hcusd oNv NVld 3flS 9.2:ild -/'? - -===.-_:-uy't tzira)k tl'tl lO t]-nl\^Ie1 Zr-rll rO t'rA tO O 6-rr rdt-r^ r ZT, ---' ql 1l 1l 1l 1l ;l 1l gl 1l gl I lr 1l 1l 1l 1l 1l ll- l1 l1 l1 \// /' \\ // // l/ til\\ /( / l -1 s\ cn !/F(p )r#./ )a l/ il It \\ \ r I I I r TIITIITITIIIII ( ''.; I I I I I I t I I t I I t I I I t I I Mill - Groundwater Discharge Permit Croundwater Monitoring QualirY Assurance Plan (QAP) ATTA.CffiMENT 1 WMXTE MBSA TIRANIT'M MTN,E. M'TET,DX}AI'A Date:. 2.25.07 Revision: 2 Page4Aof 4l Description of Sampling Evenst$gg tocarion(wellname) &[Pl - Nameandinirblslaw DateandTime forrurging . 8- l)t-otri *rdsampling(ifdifferen0 ruzn welt purging Equip used: Y ,pump or -bailer well Pump (if other ttran Bennet)-QE-0- Sampling Eve ", Av W,* b*,*l,rWrtt rv. rivell Sampled in Sampline Event Ad-3 owvorrrln 7 4'' P\llutret4o : W SpecificCondtctanceglT vNl$,toslcm WellDepth il8 Deprh !o warer Berore Purgi"e--bG-X 3- casing volum:,"Lf .,,offi']ffi![|ll' Conducunce'fo"g) l''-7O5 . pHofWater(avg]G welll.rtlaterTernp.("rg)--15-'jLt-' ''i RedoxP-otcntial@h)f5i Tubidity '73 WeritherCond. orlQ . \r..nn4 Ext'l funb.Temp.(priorosamptingcvem)--2J--c'- conductance lt3a . conductance 173{ ' ' ,; - ^rr '|Ll Pn 1l\ ' tempsrature ,li{ ^60 - RedoxPotentiurenl ?alo ttrUiOity'j5-TurbiditY .5s Condustance l73O - Conductance - I7)a - temperat*re lL ' R RedoxPotential (Et0 216-- pH 7-13 - T"*p"."tor"- l5')i RedoxPotential(Eh) l7l {*& t'oq f,"t I I l: I I t t I I I I I I I I I I t I Mill-GrouadwaterDischargePermit Date: L1.17fr6 F.evision: I Crourdwater Moritoring Quality Assruance Plan (QAP)Page(l of 4l ruraixtvfl Volume of lflaterFurged S Pumping Rate Colculation FlowRate(Q), ingBm.Time to evacuste two casing volumes (2V) 5/60= = "-3:a T=2VIQ= ill +:t;n. -, Number of casing volumes evacuated (if other than two) ru /A - If wellevasuetedto dryness, numberofgallonsevacuated ^J/h NameofCertifiedAnalyticalLaboretoryifotherThasFn rgylrtr.Arr..ic"q\d"J LaL I ' scl of 'rod: TYpeof,Sample $am$e Taken (ciftte) Siin$IeVo,Iume findicateif other Eiltered (gifcle) Prtservative.A4f,4 (circle) 't4gi[ps.,speqt$Fil helrrur) YOCs ff)N 3xul0 url YU HCr- ff] N Nutrients Y lNI l0Onl Y6 ILSOI X 1I' H&wMetals (Y-)N 250h|Y)N HNO, @ N All Other Non' Radiolosics YA0 25OEI Y0 NoPreservative Added OrossAlpha Y 6{)1,000 mI Y I:N\II"SOT Y Q O&er(speciff)Y(UD Samplevolume Y (},I' If a preservative is use.{ SpecifyType and Quantity of Preservative: I I I I Mill - Gmundwaer Discharge Penoit Groundwater Monitormg QuBIitY Assurance Plan (QAP) Date: 2.25.M RPvision: 2 Fage 40 of4l ATTACEIMEhIrI ---wrorp@unaruuMMIL[' F'[E[,DDATA T T I I t T I I I I I I I I T DescriptionofSamplingEventi'},.bv Lvt a L' w' t'1'-"--'"Y-- Sampler Locationlwellname) ''4\'d 3 Nameandinitrils-Jm DatsandTimeforpurging 8 -l)-<16 and sampling(if chffercnt) rJ/n' well purging Equip used: -lpump or -bailer wetl Pump (if other than g"*'D s r D - --rrr r--O"t ,- 'n t'-' t" ' ' well sampl"u t:T''s Event- In9* A i li plButrerao 4'o ' q1 SpecificCondu"t*n'417''*'trtOst"* WeLlDepttr -u Depth to waterBefor'r*g,og- {5,.il - casingvolume t"lf ,f"fi'l.ffa!1i'# conduetdnce (avg) 5? lE - pH ofwriter (avg) ' t'51 - welt waterTemp. t""gJ5.)E-- RedoxPgGntial @h)'y)-Turbidity ' t{t{' Wearhsr Con d-AN.Jl+l-r+- Ext'l Amb' Tem! (pnor o sampling eveft)--L1''€, @ ConUucance E76) Conductance 57D -'; ' t"*p"r"trr"-i'5'11 ' 311 RedoxPotential rln) 3N Redox Poiential (Bh) 'ol -l r\r'rru^ ^ vrytsrrE' \---r- "aL Turbidiry ''5) - TurbiditY ,3( conau"tanc" 57ttl . conoucunce 566J' ' -pH I'IJL Px ' 6't) - (:', Temperature , lLl fll ' Redox Potenti il fgAlSU*- Temperature- l5'iQ ' Redox Potenti"f PUI 3\ 4-,-u - " tllli-\ '.: Lr 6* - 'bh I I I I I I I I t I I I T I I I I I I Volumeof WaterPruged Pumping RPte. Catculation FlowRate(Q), inslm.Time to evacuatp tvuo casing volumes (2Y) s/6o= = "33 T=?VIQ= 16 /.lt,ru, Number of casing volumes evacuated (if other thaE two) ^J //+ - If wellevacuatedtodryness,numberof gallonsevacuated .. ,u/A. -. .. Name of Certified AnBlytical Laborafory if Other Than Energy Labs Amrri ro* tJc* Lt t - -!tl "P uoa\\ Milll-GloundwatrDischargePermit Date: ll-fi.A6 Revision: I Crouudwater ndonitoring Qu,ality assurauce Plaa (QAF)Pageal of 4L TyroofSam4e Samnle Taken(dde) Sri,ibrile Volume - (Indicoteif other [-Ilt€rqd (circle) Freagrsafive Adaled (ci[cte) VOCs fitN 3x40 ml Y lN r..HC[. iY} N Nutrients (s lfi)El YO H,SO. Y FN Hdawlvtretals rDN 250ihl Y)N HI.IO, & N All Other Non- Radioloeics Y@ 25Oml ;.. YqD NoPrreservativd?dded Gross Alpba YOD 1.000I8I Yrrr HrSO. Y (I Other (specifY)Ye}Samplivolume Y (ID t5 If apreservative is useq SpecETYpead Quantity of Preservative: I t I I I Mill - GoundwaterDischarge Pennit Grounclwater Monioring QualitY Assurance Plan (QAP) Arq4rclIMEST'1 DescriPtion of SamPling Sampler Location(wellname)., .A41") -3/l - Nameandinitials Date and Time for Purging k.:.1). oE . and sampling (if different) arzA Well purgingEquip Used: +pump or-bailer Well Pump (if otlerthan Bemet)A'ED specificconductance4fz-uMlroS/cm wellDepth ' 95 -Depth !o waternerore Pursins--85,38 casing volume *r1#fi',l',fr.,.!Hll' Conductince tun$ Slqq - pHoflrtftiter(aYl' ' L'51 ' Wel WaterTemp. (uue) | 5.gl-'' RedortPotential (Eh)41 Turbiditv " i I (j: WeritherCond--i-*^"Ext'l Amb. Temp.(prior to sampling event)5"q conductaoce Goo}, Conductance 5t() . ; pu LLa PH t'L?- -Temperahrre lL t3- T"*Pt't" ' 15^6'3 Redox Potential (Eh)-:D-U.- Redox Potential (Eh) i\eq -Turbidiry -j[ - ruruiaitY ' ' :0k ' condu"unc" 513?- - conouctanc" ' 5(Ol: p Pn '-t!\ Temperature l\ 3t{temperature [5'Q1 RedoxPotentiuf Ghl-330.-- RedoxPotential(Eh) Date: 2,25.U1 Revision: 2 Page40of 4l t t t I I I I t I I I I I I t:: I aq-bo WNfiT'E MESA I'RAI{TIJM MNN,X, .15 t I t I I t I I I I I I t I t I I I I Mill - Croundwater Discharge Permit Groundwater Moniloring QualirY Assurance Plan (QAP) HELD DATA Datei 2.25.07 Revision: 2 Page 40 of4l A.TTACIIMENTl WI{ITE MESA TJRANIT]M MILL Description of SamplingEvent: -s,Y-v, U.\taW 0 U,#4ttffi{^tt'Vr V - Location(weuname) -. /UW A il#Jll, initrats6sr lLll,l^ Well \J9ater TemP' (uve)--l E'15-RedoxPotential (Eh)2.81-Iurbidity' Lg Weather Cond.-ryle Ext'l Amb. Temp.(prior to sampling event)-313' ' DateandTimeforPurging t: ll-OE, andSampling(if different) ,,UzA ., Well PurgingEquip Used: llpump or bailer Well Pump (if other than Bennet)--(f-ED- Sampting Eveu t (]tv Lf, ilS brr, q{il,avtljrcv. Well Sampted in SmPlins Event:M d. -S pllBufferm .. 7{ PHBuffera'o '#'d SpecificConductanceg?Z-uh/trI0s/cm WettDepth, l3o'?l . Depth to Warer Before Purging-il2X .L - Casing Volume (V) 4' Well:-[931 -(.653h)3" Well- NlA (-36'.1h) conducrance(avg) Etqo - pHof water(avg) , G'7)- - Conductanse 3{{ I I - conductance 3ct 55 , .. pa. G18 * P temperatruej\.BQ RedoxPotentidfgn) )O}.- t"*p.*tur" lE'.16 . Redox Potential (Eh) )J 4t . TurbiditY..q''l rurbidity .-'71 -' r^aartrrntnnce 3ql-l8 conductance--39il! p tr*p"**" 15.)4 . RedoxPotential (Eh) 1)1 .- (-.'' TemperatureL RedoxPotentialGrr) iF-(.; I *ebfroL.lq I I I I I I I I I I I I Milt - Cnoundwater Discharge Permit Grouadwater lldoritoring Quality Assurarce Plan (QAP) Date: LL.fi.AG Ravision: I Page4l of4L furUiaityff Volume of WaterPurged Pumpine Rqte Calculatign FlowRate (Q), ingpm. Tirne to evacuate two oasing volumes (2V) 5160= = ".53 - T=2VIQ= X7 /ul,n*tcs Numberof casing volumes evacuated (if other than two) ru/A Ifwellevacuated to dryness, numberofgallons evacuated ^l/A . Nameof CertifiedAnatyticatLaboratoryif OtherThanfn"reyLrbs A m".;(* W.J L'.\ I 5cI "F vod! t I I t I I I Tvoe of Sample Snmole Taken (cirde) SondeVqlqme findicateif other E.iltpfed (circte) Preservative Added (eirde) thldae spccifled below) VOCs $ N,3x4tlml Y HCL N Nutrieats Yd 100ml Y H"SO.Y HCawMetals rnN 250hl N m{o3 (Y) N AII Other Non- Radiolopics Y@ 250m1 i Y(ry No Preservative Added Gross Alpha Y ITtr}1.000 mI Y H.SO" Y N Other(spec$)Ytry Samplevolume Y(D re9 If apreservative is used, SpeciffTypeaad Quantity of Preservative: I I I I I I I I SamptingBven, Cl, :Af.ob /"rn, f,, ;O4.8 "v. Wett Samptedin samptingEvent-lnd-# prrorrn"rl.o 7-4* Pllufferao ' '4'A - I I I I I I I I I I I WffiXTE MESA {MASITUM MII,L Mill - Groundwater Discharge Penuit Groundwater Monitoring Qualiry Ass u.znce Plan (Q'AP) ATTA.CHMENT 1 DescriPtion of SamPling Location(wellname), -l:AW,, l{ Nameandinitials' DareandTime forPurging - 8-5-. -.Ca andSampling(if different) Well Purging Equip Use& Lpump or -bailer Well Pump (if other thun Bennet)-Q E l)- Daie: 2.25.07 Revision: 2 Page40of4l SpecificConductanceffZ--unffIos/cm WellDepth flt'?' Depth to Water Before Pursrnll(lg,I3-- casing volum","Lf'#i',"*fl a!:;il' Conduc&incet"ug) 3{ttq pHof'Wdter(nveL'-'LL Well lryaterTemp. tuvgl--15-11- RedoxPotential (Eh)3]LTufbiditv . @\ ' O05 Ext'l Amb. Temp.(prior to sampling even0-?[C= - r 'i 'Time:-lll00*Aof. tanndrrctence i8 t?("nnrfir.:tnnce 3851 r ra-u b'b>p temperature lL, Lt __ ' ]?-5 RedoxPotsntial(Eh) 3O( - Redox Potential (Eh)---- Turbidiryo-TurbiditYo- conductance -i8(8 - conductance 3${5 .. t"*p"*to." IS.Otr - Redox Potentiar Gh)--ln- (.' RedoxPotential (Bh) 3i0 - fr*x- 0 ' .,.. pH q"t}. - 0a i .: I li I I I I I I I I I I t I I I I I I Mill-GrounrlwataDischaigeFamit Date: 11.17-06 Revision: I Groundwater lVlonimring Qnality .assurance Plan (QAP)Pap4l of 47 rutaiaqfl Volumeof WaterPurged Pumpins-Bat€ Calcul&tion FlowRate(Q), ingPm Tinp to evacuate two casing volumes (2V) 1=2y1q= _ fl r"tjn Number of casing volumes evacuated (if other thas ttro) -- ru/a - Ifwell evacuated to dryness, number ofgallons evacunfed Name of Certifiert Analyticat Laboratory if Othcr Than Energy Labs-.t&I Tvneof SamDle Ss4ple Taken (cincle) SrlinrileVo,lum.p finrlieateif othcr Filtered (circle) Preservative Added (4Tclel 't$gfl ae specifrcd belorr) VOCs )N 3x40 nl Y rM r..HCr- ft1 N Milrients ,)N l0OEl Y ILSO, itY) N HdawMetals Y}N 250hl IAN rnto. 0D N AII O0rer Non- Rndioloeics vN 25OmI Y@ NoPreserYativefld"O CnossAlphe MN 1.000 ml lY} N H"SO, fn N O&er (specifY)wN Samplivolume Ye9 If a prcscnrrative is use4 SpecifyTypeand Quantity of Praservative: I I I t I I I I I I I I t I I I I I T Mill - Groundwater Discharge Permit Groundwater Monitoring Qurlity Assurance Plan (QAP) Date: 2.25.07 Revision: 2 Page4Sof 4l ATT'A'C.HhiIENT 1 WE{TTE MESA EJRAMI'M MNI,L FIEI,D DATA WORKSBEET FOB GROTIRTD WATER Description of SamplingEvenu 3g*D . (')aOrc t hfkuuvlfta{+t1- Samoler Location(wellname) ..!lil. l5 ffi'""* initiarcfintt,r lla/N,ri DateandTimeforPurging t-l).-ofi .-andSampling(ifdifferent) ru/n - Well Purging Equip Used: J-purnp or -bailer Well Pump (if other than Bennet)-CI-ED- SpecificConductanceifZ---uMHos/cm Weu neptn 137 : Depth o Warer Before ru.srng-J-Q gU- Casing Volurne ff) a' Well:-J3,[J-(.653h) 3" Well:-- ^rl2-(.367h) Conductdnce f ursl---tl-L1-L pHof,Wdter (xvil- WellWaterTemp.(org)-l-5.11.-' RedoxPotcntiatgq3fiLTu6idity' lll Werither ConO.-c\ c.ar-j[l :Ert'l Amb. Temp.(prior to sampling evem)-[l jlr conductance--:ilL{S Condrrctnnce LllO)- p r"rp"*t * 15 S remperature lQ 'dl0 - RedoxPotentiarCn)-l$&-- RedoxPotential(Eh) q33 TurbidiUA TurbiditY--J2]Q Conductance ,n W lJv pn 6.8I - T"rop.r *" 119{ - I .i I r,.g-b RedoxPotentiur feh)-@- iE-- Redox Potentiat (rD $1 . fr*L ' ll --"iq I I I I T I I I t I I I I I I I Milt-GrormdwaterDischargePeroit Date: it.17-06 Revision: I Oroundwaer lVlomitoring Quality Assureoce Plau (QAF)Page4lof4l r*uitityfl VolurneofWaterPurgedWtn*+i"fa*mr*t"*-m"+*"'""*d tdt,'t -, Pumpi$ g Rate Calculallon Flow Bate (Q), in gpn Tirp to evacuats tl4,o oasing volumes (2V) s/60= = "33 - T=zvlQ= 12.0 nLin- Nur&er of casing volumcs evacuated (if other than two)-*lZt If well evacuated to dryness, number of gallons evacuated 't-tlz+ Name of Certified Analytical Laboralory if Other Than Bnergy Labs d/A'- I I I Tv'eofSamole Somple Taken (cirdel SriinrileVolume - findieatelfothet filterE! (circle) Precerrative A4dcd fcircle) rhiitr as sDeclffd below) VOCs Ym)3x40ml Y fN)HCI,Y( Nutrients Y l0Oml YT}u ILSOa XE) tliawMetsls ff)N 250Iiil I fNl m{0, ff) N All Other Non- Rndiolocics Yry 25Oml YE)No PreservatiYe tdd.d Gro$Alpha YSv 1J00 mI Y fI\D H"SO" Y TN) Otier(speciS)Y \ryt Samplevolume Ye7 t9 lfa preservative is use{ SpeciffTYPeand Quaonity of Preservative: t I t I I t I I I I I I I t I I I I Mill - Groundwater Discharge Pennit Groundwater Monitoring QualitY Assurance Plan (QAP) ATTACHMENT 1 P'NMTDDATA DateandTimeforPurging 8-l?'-olr . andsampling(ifdifferent) i.r/A - Date: 2.25.07 Revision: 2 Page 40 of4l WEMTE MESA I'R.ANIUM MX$,E, Wel PurgingEquipUsed: fpump or-bailer WeltPump (if otherthannen e0J)-E-D- SpecificConductance9lA-rtu&l}Stem WetlDepth, i!I, - Depth to Water Before pu, ernsJl_A- Casing Volum" r,lf *Hl:*}j\!:;l1l Conducmnce (uW) Q 5 [6] pH of'Srtier (avc) ' 6' 86 lvelt n/ater Temp. (ave)-l]L-CLl--RedorPotentu @rU2$atuoiditv' Llil. WeatherCond.Ext'l Amb. Tcmp.(prior to sampling event)-35-:C- ----r-j.- Time: 0035 oat. conductance q L5b - pn. - -U'81 - Temperature !{'L{1 -_ conductance tll+77..--. , i- Temperarure. RedoxPotentiuffehl 151 ' tlfurbidity 'bb RedoxPotentiat (8h) ]G1-- Timsl9lQ- Gal. Purged-?LL--Time:-loIl -Gal. conductance Ll56\ . ps c{ T"mp"rrtur" lti "7? - Redox Potentiur Cn l--313-Rsdox Potential (Eh)j3\ f,..t I .'b5 "'10 : I I I I I t I I I I I I I I t I I I I ftdll-CnouadwaterDitchar';gePerait Date: 11.17-05 Revision: I Gi'oudwater ldonitoiing Quality .Assurance Plan (QAF)Page4-l of 4L nniinrY -- rlrrbidityfl Volumeof WaterPurgecl Pumpine Rate Calqulalion FlowRata (Q), inEPm.Time to evacuate turo casing volumes (2V) S/@=T=2VIQ= ... 155 Numberofcasingvolumesevacuated(ifotherthanfiro) - . I't - If well evacuated to dryness, oumLer of gallous evacuate.d n; rn Name of Certifted Analytical Laboratory if Other Than Energy Labs nllA' - TvpepfSary$P Samnle Takeq (ciftIe) SamrileVo,Iume findicateif other Filtererl (circle) Fressrvative Added (cifcle) '!S$4-ac rpegiffed halow) VOCs YN)3x40ml'Y IN,frct- Y lIS Nuhients Y(NJ l00ml Y (bIJ HzSOr Y (N) Hriawtrdetals (Yl r{-250hl f)N IS{O* CJ N All Other Non- Rrdiolosics Y (NJ 250mI Yg)NoPtEs€rvative Added GrossAloha Y /N)1.txl0 ml Y fN}H"SO, Y (l\l) Other (specifY)Y (St,l Sarpldvolume Y0, If apraservuive is tue4 SpecifyType and @antity of Pleservative: I I I I I T I I I I I I I I I Mill - Gioundwater Discharge Fermit Grounrlwater Ivtrorritoring QualitY Assurance Plan (QAP) .{TTA.gm/ry}n 1 I4ffUTE MESA {'R^AI{T['M MNT,E, Codduetdnco(avg) Date 2.25 -07 Revisiou: 2 Fage 40 of41 DeeeriPtion of SamPling Sampler -/ Location(wellname)-tr\tti K Nameaneinkialslas+ Date andTimeforPurging 8- l3-Otr anrlSampling(if different) N/n WellpurgingEquipUsed: X-pump or-bailer WellPump (if otherthanfenneg !-ED- Specific Cond uctan"e!1L-:'firt*l}Slcm WetlDepthj3t'l ,- , ' Depth to Water Before Purgin CasingVolume $)e" Weth tlO'55 .'Cosgn)- 3" Well:-*g/A-(367h) pH of,,IMritbr (ive) ' I I I I lL{..St{' RedoxPotertiarGrUaeQrurbiditv o"5 ,l,,rnnJ Exf I Amb. Temp(prioro samplingoven0j-1-b:- RedoxPoteuti* feh)l91- condu"teo"" 3]8), ,, n t"*p"otur" lL{ 'U RedoxPotential(ED lq.I .. turUiditv ".08 . - conductance . ?3& - condurt*"" . 3i17 - . ' Redox Potential (ED-]-[-f- prr _[5b - temperature l:l'l{0- RedoxPotential(ED aOb - ' {** (&g LLb -oL'tuw L:; I l, I I I I I I I I I I I I I I I I D,{i[ - crroraadurater Discharge Feruoit DatE: Ll.l1 -86 Revision: I Ceourdwater Bdoritoring Qualiry .Acsrraace PIar (QAP)Page/i-of 4l f, Volume of Tl/ater furged Pumping Raoe Caleulation tttow Rate (Q), in gpm. Time to evacuatc two casing volumes (2V) s/@= = -33- T=zvlQ= Ati6. Nurnberof casing volumes evacuated (if otherthan tfi'o) €-qB - Ifweilevacuatedtodr5rness,nnmberofgallonsevacuatcd -.- - ru//l - Name ofCertifiedAnalyticalLaboratory if OtherThanBnergyLabs--'tLh TVoegfssmntte Samnle Taken (eir'clc) ' Siinri,leVduqpe (Indlcoteif o&et Elltered (circtre) FreceryaffveAddqd (ci{,Sd VOCs Y /xt)3x40ml Y AD ,..EC[, E d NuEieots Y GL)lmDl Y SIJ H"SO. Y (EI' Erhwnfietals iY) N 250fiI Y)N HNILAN All Other Non- Radiolocics YS 250mI YA9 NoPrpservative Added GmssAlphe Y(M I.000 mI Y TN)H',SO, Y /N Other (spccifY)YG)Sampldvolume Y QI) Eaprescrvative is use{ SpecifyTypeand Quantity of P;eservative: I I I I I I I I I I I I I I I t I t I Miil - Cnounrlwater Discharge Peimit Groundwater Mogitoring Quatity Assurance Flan (QAP) EIEI.D DATA Description of Sampling Bvent:,5 0"D Date: 2.25.07 Revisioa: 2 ?age40of 4L ArTAcmffis:1 WTffiTE MESA UR.AI{[{'M MII.L Location (well iltrJ lq DateandTime forPurging S-13-C6 and Sampling(if different) tt /A Well purging Equip Use* -Ipump or -baiter Well Pump (if other than n,-'gjl ED-- ffitfil, iniriats 6$,r lLll,lr:; SamplingEven, (l ,r.LT. ol5 (nrn l,,,Nt[prrv. \ilell Sampled in SamptingEvenr illlL pwvrrnul.o- 7 !" Pltutret4s ' 4:.0 - Specific Cond uctanceslZ----:affiL}slcm Well Deph . I Ll1 Depth to WaterBeforepurg,og-S5fl - Casingvolum",'lf;Xilffiffifll' Weu \JYater Temp. (avsJg-Lf, - pHofWriter (wel . 1"O7- - RedoxPorcnriarcEhfll!-:urtiditv' l3! t^nnrftrctcnce iq\-l coodo"ran"" l3.F$ . ,, - pP t"mp"rt*" IS"IQ - temperatur" l{ L}l ' RedoxPotential CDJ(D- rwbidity . '?3 - Redox Potential (Eh) q U -1- Turbidity -.- ' I\ - (-, Weather Cond W Ext'l Amb. Temp.(prior to *nrnpling "'"o0-l5o Q conductance )35t . plr 7'l(7 Temperature l.q'5 i - conducance lil{8 -pH -. -T.lP . RedoxPotentiorcnl-155-- RedoxPotentialfsh) t{56 - l--j; f,,,_u o T:utuidW - - I I I I I I t I I I I I t I I Mlill - Groundrnrater Diocharge Peruait GroundwaerMonibring Qtmfiry .4ssuraace Plas (QAF) Date: 11.17.06 Revision: I Page4l' ot4.L - Volumeof WalerPruged Time to evacuat€ two cacing volumes (2V) T =ZYIQ=6D 36q min. Puryin g Rate Celculation FlowRate(Q), ingpm.5/60= = ,. -. .33 - Numbor of casing volumes evacuated (if other than two) " bS If well evacuated to dryness, number ofgallons evacuated N /A - Name of Certified Aualytical Luboratory if Ottrer Than Energy Labs rrJ /A ' . I I I t Tvreof Samrle Sunlole Taken (ctude) Sriiluite Vo,lume 0nilieslail!&s[ triltsre4 (circle) PgEervatige.&l.led (clryFte) 'thriil or euecifred bdow) VOCs Y CN)3xz$ml Y_{]HET- Y (S Nutrients YW l0Omt Y6 P H,SO. Y N H&wMetals (vN 250hl Y)N i*ro. (yt N All Other Non- Rndiolosics (y)N 25Oml YGy NoPreservative Added GrossAlPha Y0q l.000ml Y$T H"SCrr^ Y $ Other(speciS)Yqy Sampkivolumc Y tlv If a prescrvafive is used, SpecifyTYPc and Qrantity of Beservative: I I I I I I I I I I I I I I I I Milt - Grounrlwater Discharge Permit Gmuirdwater Moaitoring QualitY Assurance Plan (QAP) Date: 2.25.07 Revision: 2 Page40 of4I aTTACTm4NT I WEMTE MF,SA ITRANTIJM MILL pn t7E . plr ]'Of - r"mperrture it'il Redox Potentiar (Eh)-ULt-- furbiditY D Redor Potential (Eh) li tL\ - Description of samplingEveat: '5r.w (,Ata{-rcfl alulttw'r| v tocation(wenname) . -AW )o . iff'llu*, tatsfan*'r ll',/l'i{9 Date and Time for Prueing b - I I -o6 ana Sampling (if different) '*'t /A ' WeU purging Equip Used: I-pump or -bailer WeIl Pump (if ottrer than BenneD--(J-6D- sampting Eve at ()u+u* LlVl <ro.,Ml,ilNtlx,ev. well sampted in sampling Event@\ pnarttot.a 7-!'- Plautfet+s : Ll'A Specific conouctance 47 7 d,ftIos/cm well Depth . $ 7 - Deprh to warer Before r*sr&-(CI-1-I- casins volume ,rrf #fl'# alfill' Conductrince (avg) bSOCl - pH ofr'lVriter (avg) ' " -l '05 * well waier TemP. Gvd-lqil]-Retlo:tPotential (Eh):81-Turbidity' o35 Wearher Cond.5a,rsrg.-+j-3ggf- Ext'l Amb. Tcmp.(prior to sampling cvent)J-o &.- Gal.huged rrantrrnrsn@ tTqi Time: 1095. Gal.Purged-Time:jl0[\-., Gal.Purged- conductuo"* f773 - conducrance L6.tf _ I I I pI{ 7'l6- pH . . J 'lN - t"*p"*t * l5'8I - t"tprr.tur" 15'9I Redox Potentiar Ceh)- 3J-1 - Redox Potestiat (Eh) '35q ' t-.-r, f,.-a \. 6PL (\'l[.r '-- I I I I I I I I I I I I I I I Volumeof Waternrged Time to evacuate hilo casing volumes (2V) T=ZVIQ= )L M,(n -- Numberof casiagvolumesevacuated(if other than two) - rl /A, If well evacuaEd to dryness, number of galtons evacuorqrl 4'1.//\ - NameofCertifialAnalyticalLaboratoryif0therlhanenergytaUs Ar..rltk \AJt5I Lb l r.l "[-'uoC) Mill - Grouadwater Discharge Psrmit &oundwater IVtronibriag Quality Assuraffe Plan (QAP) Date: 11. 17.06 P.evision: I Fage4l of4l - PumpinF RaE Calculation FlowRate(Q), ingpm. I I I I TvoeofSamP&So+ple Tekeq (circle) SriutteYqlume findicateif other Eiltsfe$ (circle) Presgry,stive Added ($T"1") thliilas speciffed below) YOCs ff)N 3x4Ontl YfN HCT- tlD Nl: Nutrients V'N 10Oml YND II*SOI (Y) N H6awnrletals (Y)N 25ohl TY) N HNO] E) N All Other Non- Radioloeics wN 25Oml Y$P NoPreservative Gross Alpha TDN f.m0ml WN ffrSOn (Y) N Other (specifY)(Y,N Samplivolume Y\ID Ba preservative is use{ SpecifyTYPe and Quaility of Preservative: I I I T I I I I I I I I I I I I I Mill - Grouadwater Discharge Feriuit Grourduater Monitoring QualitY Assurance Plan (QAP) Date: 2.25.M Revision: 2 Page 40of 4l ArracIIil4ENSl F'IELDDATA,WATER Date and Time for Purging t - i I - QS and Sampling (if differen0 prn -" WellPurglngEquipUsed: Urumpor-bailer WeltPump(ifotlrerthann"*'t) j-EQ- sampringEve rqi-lt,rmr,-V.*,*t,rW|33lr:v. Well sampledin samplingEverrta/-t- pttvrrflert.o. -7{ PxBuffera'o '4d - weuDeptr,. Jlli -... Casing Volume (V) 4' 1't/ell-3ojl-('653h)- 3" lVell: t/r\ (.367h) weathercond Erf I Amb'Temp'(priortosamplineeven0-N-Li- l^nnrfrrnfance ttq \Conductance tt7t . . ,r- pP Specif ic Condu ctance %L-uMIIOS/cm Depth m Water Before Purgirg--d' t}- Conductdnce wett Warer Temp. (avg)-l!.68--' t"mp"rnt re, ii'!9 RedorPotential (Eh) tll)- Trubidity.').qI pH oJmitcr(ivg):Blg0 RedorPoGntial @n)stuoidiry I 5?} t"*pu*tuo"-,i{'Q1 , RedoxPotentialCh) t{51 Turbidity l,q'l (: , WEffXTE MNSA IJRANIT]M MN[,I Time:-953$- Gal. Purged-I[O5- conducun"" tt68 . @Purged-363-- conductanc" tU8 - pn \ 91 pn 5:10 - Temperature l4'Sl - Temperaurre - l1'() RsdoxPotentinrCrr,l {il-- RedoxPotentialGh) L\'58 - L-;,I I 6LL f,*u_l,}\ ,_ I I I t I I I I t I I I I I I I Miil - Gcoundwater Discharge Permit &oundwater iuonitorhrg Quality .{ssuanPe Pleo (QAP) DBte: 11.17"06 Revisioru I ?age4l of 4L r*biairyff- rtrfr-r lT'nld l-qs*r'rp'p'c nft' furna$ttre,I 3c1. tVolume of T[aterPurged Itumping Rate CalPUlation FlowRate (Q), ingpm. $/60= = ,. .33 Time to evacuate two casing volumes (2V) T=2VlQ=I tlLl ,,t. ^ Number of casing volumes evacuated (if othsr than two) | 'Ll - If well evacuated to dr5mcss, number of gallons evafilated . ^t/N .* Namc of Certified Analytical Laboratory if Other Ttran fnugy Labs AW \" rEn oi.^ ^ rJ-^ [5' 1 se} o[- uoCs I I I TvpedSannPle Sar4ple Taken(cit'cle) SiinrileVolume findlca0Elfothet Eiltcred (circle) PrpservaFve 4{dP4 (cifcte) th$if asppectflpd below) VOCs rY) N 3x40ml Y rIiD ,-.Ecr- fll N NuEients u1 N l0Onl Y {NJ IITSOT Ot--N HtiawMetals fY) N 250bl \NN mio. lY) N All other Non- Radioloeics tpN 250 EI YOD NoPreservative Added GrossAIPha fr(J N 1.000 mI T\N r[so" frl N (ry) If a preservative is uscd SpecifyTYPe and Quaotity of ft eservative: Other (specifY)aN tY'".t:"Y (ll-, I I I I I I I I I I I I I I I I I I I conrlrrctance 37tl pn .-_ .. t-(x - t *p"ot r" l!'58 . Redox Potentiat fen) 3[,5 - Mill - Groundwater Discharge Perrait Groundwater Monitoring Quatity Assurance Plan (QAP) ATTAC-HMFXIIT I WtrilT'E MESA. IJRANIUM Ad[[,N, F'[E[,DDA,TA. DescriPtion of SamPling Sampler Location(wellname) l4h) )3 - ir?#tiai"itw 6u,'c. -il'll'l?t DareandTimeforPurging t--S-OB - andSampling(ifdifferent),u//t. Well Purging Equip Used: &pump or -bailer Well Pump (if other than Bennet) Q 6 D SpecifrcConductan"r4lL -rMfrO$l"m WellDepth l3a - DeSh 0o WaterBefore Purgin&jl-t{ }- Casing Volume arrlr;1;1ffi.!:;il1' ConductdncoGve) 38G'l pHof,Writer (w$,' L'Lq- Wel WaterTemp. (ave)--L(zj!-- - Redox Potential Gtr)goq TutUidity .' lt - Erfl Amb. Temp.(prior to sampling event)-afloc '- ConductanceL Conductance atlL .'. ' -" ilr L.7t - p remperanre tS-86 Temperature l( .3t{ ,t Redor Potentiol (Eh)---l3i-- Rsdox Potcntial (Eh) 30 i - Tubidity .OB . DatE: 2.25.W Revision: 2 Page 40 of4l conductance -]1[)5 pH [, L>., - (,1' (.:i WeatherCond. Po.,.\lq. 6lo RedoxPotentiaf frUl JL{.}-- {*b o'il fr"*,41 I t ,. I I I I I I I I I I I I I I I Mtl-6r'orrarluatei'DischargePermit Date: lL-17-A6 Revision: I Groundwater l\fiouitoring Quatity Assuralce PIau (Q.SP)Page4l ot4t rlr*iairyfl' VoluureoftrffaterFrHgedlYk f'cHFaaehffiF=+4"8*urart I3'l - P$urpine Rate Calculation Flow Rate (Q), in gpm. Time to evacuate two casing volumss (2V) s/CI= = , ..3-B * T=IYIQ=- 7() NLirL Number of caeing volurnes evacuated (if other thau two)- ula : .- If well evacuated to dryness, number of gallong svacuated ^'/i+ .. NameofCertifiedAnatyticaltaboratoryif0therThaaEnergylabs a-..:i"n-\r.1.*JLb. lScl"frtoi) I I Tvpeof SpnPle Sarqp,Le Taken (circlc) flamdleVolume - findicate if other' Blttered (cirde) Pf,sssrvafivqAdded fetrcle) 'thtiil as sueciEeil hetow) VOCs fY)N 3x40ml Y/N5r acx. G1 N Nutrients N f00nI Yn0 H"SO. trJ N Hr*rwlvtretals ilN 25gml N m{o" gJ N Att Other Non- Radioloeics g)N 250ml YW NoPrescrveti. veAdded GrossAlpha fr) N r-0mml &1 N H,SO,- (Y) N Other (specifY)vN Sampl6volume Y(S e9 If apreservative is use{ SpecifYTYPe and Quantrty of Pressrvstive: I I I I I I I I I I I t t I I I I I I Mill - Gmundwater Discharge Perrait Groundwater Monitoring Quality Assurance Plan (QAP) Date: 2.25.07 Revision: 2 Page40of 41 ATTACEflMFIIT,N WEINTE MESA T,IRAM{'M AdNLI, F'[E[,D DAT'A ${IORKSHEET E'OE GROT,IITO WATER Description of SamplingEvent: ;.et?-? (t)rao:r o htUt,wlN*'{ - rncation(weuname) ln\a) aq m:lil,a*p1rfrl,, llnll,lg Date and rime for Purging Yt ' L'o{ und sampling (if different). WeU Pureing Equip Used: f,fump or -bailer Well Pump (if other than Bennet)-5ED- SpecificConducranceSlL-ttuElAs1cm WellDepth J}-O -DepthtowaterBeforePrustnS.-lL[39- casingvotume(v)4" well: j f (553h) Conduetdncetavg) t{555 . n,"r**r1"rg 1"I'-?}-4'U]? Well Tt/ater Temp. Grg)l.I-I-RedoxPotential Gl!il1-1-Turbiditv'q I Ext'l Amb. Temp.(prrior to sampling even0jl0-k-:- Purged--1-'3-t* conductapce...QST{ - &nductance 1566 -;- pH L'71 - p Temperature... 17"O1 - RedoxPotential(Ehil5-] -- RedoxPotentialGh) l,Of Tu6idity ' 8l TurbiditY .Eo conductanceL conductance -15?l . ps U'41 - Temperarure .. lt'7 I , pH,, t'qo - Redox Potentiat (Eh)-LU !- t"rp"*nr" .lC'9I -Redox Potential (Eh) I.91 ' .( l'.; 6sL l'os l.x,' I l: I I I I I I I I I I t I I I I I t Mill-Grouadwater"DischargePeroit Date: L1.17.06 Revision: I Groundwatnr Mronitorilg Quality Assurance Plas (QAP)Page4l of41 r,*iaity{. Volumeof WaterPurged Ppmping Rate Cal.qul alion FlowRate (Q), ingpm.Time !0 evacuate two casing volumes (2V) =_ . ,< 3 . T=ZVIQ= 1O *a,i Numberofcasingvolumesevacuated(ifotherttran tw$ A/ft - If well evacuated to dr5mess, number of gallons evacuated. 6']7 . Name of Certified Analytical Laboratory if Other Than nnuef l"aUs AT.i;"a,R\4tut, Ll ' lYpoofSamde Sample Taken tcirch) Sripr.teV-o,!ume (indiede ifot[et Eltteggd (circle) Pnrseryptive Add.e$ fcirelo) thriii es apeeifted belonr) VOCs DN 3x40 utl Y /l$\ ,ECL (N N Nutrients )N l00EI Y rr"So, Ig) N H6aw hfetals 2N 25A'r,l )N -HNO" w) N Att other Non- Radioloeics vN 250 trtI YW No Ptre.servative Addcd GrossAlpha 0)N 1.000 rd v)N H,SO" . ff) N Other (specifY)DN 'T':l'i.',"YQD () If apresennative is use{ SpeciffTYpeand Quantity of Prescrvative: I t I I I I I t t I I t I I I I I I I Miil - Gmundwater Discharge Permit Groundwater Monitoring Qualit/ Assurance Plan (QAP) AITACEIMEA{Ttr W}MTE MESA T'RANN'M MXT,L E'XE[,DDATA Sampler Location (well name) /ulrtt )5 Name and initials Date and Time for Purging tf - Q'o 6 . -and Sampling (if ditrercnt) p U ' welt Purging Equip use* )-purnp or -bailer Ijt/ell Pump (if other than Bennet) Q F D sampring Even t (?t, n LT, u5 I'' f A awllnn Wetl sampled in Sampling Event-l4ldil pwnrfrnt.o 74- , Plsutter+'a* 'q'O - SpecificConduct*".9L7--r*frtasrcm We[ Depth, J l 5. Depth to Water Before PursinL7t[3- Casing volume,rrf #1"*F,:f#' Conductrince(ave) lilq - pllofWdtcr(avg) ' l":Q3 -Wel WarerTemp. Gvg)--153-- Redor Potential CEh)SlL3urbidity 0'39 Weather ConO.- Ar.tll*.-4tsAq* Ext'l Amb. Temp.(prior to sampling event)-X'!;- -,'- ; - - =; I -- - - 'al'PurgeC l$'t\ - Conductaace., 3lLl0 - Conductance 3l0Ll . 'i - pH q'65 -- temperatureL RedoxPotential(Eh)-3&5-- RedoxPotential(Eh) )-31\' Turbidity . () "fi TurbiditY .O - Gal' Purged-3:ilS- ConducunceS-S Conducance jlQl pH, -65c1 - t *prrut*". i5.0( RedoxPonentiatfenl )Xt - Date: 2.25 -ff\ Revision: 2 Page40of 47 f,*u6*L "gL ; I l: I I I I I I I I I I I I I I I I I MilI-GrorudwahrDirchargeBumit Wats:- LL.fi-A6 Revision: I Grouudwater lMonitoring Qnaliry .Assuraace Ptaa (QAF)Page4lof4l Turbidiq,fl Volumeof WaterPorged Pumrju.Bate Calgulation FtowRate(Q), inEPm.Time to evacuate two casing voluoas (2V) s/60= = ,, "33 . T=2VIQ= Number of casing volumes evacuated (if other than two) , I '"1 ,- If well evasuated to drlmess, number of gallons evacuatqd Nnme of Certified Analytical laborasory if Other Thas Bnergy Labs--./tr\)L- - TvnedSaqrPlP Samnle Taken (ciftlel SaintileVolume+finrlicsleltalter Eiltered (circle) Preservative Added fcirde) thdil ae rmciffed helow) VOCs rnN 3x40ml Y /SD HCT. rtl N Nutricnts NN l0OEl Y(N)H,'SP1 CO--N HdawMetals NN 250iiil Y\N IIhTo, $) N AII Other Non- Radiolosics 0N 25Oml Y0)No Preservative Added Gmss Alpha IYJ N 1,000 mt v)N lfrSOn (?J N 0N Samplevolume Y@ Ifa prescrvative is used, SpecifyType aud Quantity of Ppservative: I I I I I I I I I I I I I I I I I I I Mill - Groundwater Discharge Pennil Grouodwater Monitoring Quality Assurance Plan {QAP) [.IEI,D DATA Date: 2,25.07 Revision: 2 Page 4O of 4l A?TACHMEM,l GROUND WATER DateandTimeforpurging gtll'O/ ^HdSampling (if ditrercn1 8'12'(sY . Depth to Water Before Purgin, Conductance Welt purging Equip Use& &Oor -bailer Well Pump (if other than Aenneil.0ffuL,turllrr;bq SamplingEve Prev. Well Sampled in SamplingEvent--(4- pHBuffer 7.0 Specific Conductance-1(a-uMIlOS/cm Well Water TemP. (avg)--az-ot--Redox Potential (Eh)--/'^-Turbidity ""'-' Conductarce -3 t'( 3 / ,&nrluctance Weather Cond Ct t d,S^, *r. t^, A a*Ect'l Amb. Temp.(prior !o sampling event)-------' j- RedoxPotenti *W-J22- ,21 Time:-Gal.Purged . --.. Time:-Gal'Purged- WellDePth, a/ A - CasingVolumc(V)4" Well: . - .,(.653h) 3" \ffe[: a (367h) pHofWater(avg). a.,,a .- (.' Redox Potential (Eh)- Turbidity Temperature- Redox Potential (Eh)- : 1 .;\*..' WHITE MESA ITRANII M n/flLl Redox Potential (Eh)- I I I I I I t t I I I I I I I I I I I Mitl - Croudunter Discharge Permit Groundwater Monitoring Quality essurance Plaa (QAP)Page(l of4L .--- Volume of Itrater Pnrged When Field Pammeters weMeaswd ///'* Date: 11.17.06 Revision: I Time to evacuate two casing volumes (2V) T =}YlQ= ztt/rQs.....- Pumpins Rate Catculatiog FlowRate(O, ingpm.s/@= = {[rL Number of cssing volumes evacuated (if other than tuto)_,1/_tA I[ well evacuated to dryness, uumber of gallow evacuatd i// tt -NameofCertiftedAnalyticallaboraioryifotlrerThan energybAs / .({. /n c Jr^'f i*'rL, t",?J l,tr Tvoeof Samrle SarEnle Tqk"r(circle) SBmbleVolume findlcatelf otter EiltereC (circ!p) P,reserra$v? Adde4 (SIfete) lblri asgpeciEed below) VOCs UN 3x40ml YX'HCI,N Nutsients @N t00ul Y6t H,So.N HdawMetals UN 250:E,L ff)N HNO.2NAll Other Non- Radiolociss &N 250mI Yd[No Prieservative Added GrossAloha UIN l.Om mI frN ILSO, ru N Other(specify) l4t,&bl f*usr*iv !aN Sample volumc YU p If a preservative is use4 SpecifyTypeand Quantity of Preservative: v. I I I I I I I I I I I I I Mill - Grouodwater Discharge Fennit Orouadwater Monitoring Quality Assurance Plan (QAP) Date: 2.25.07 Revision: 2 Page40of 4l ATTACtr{MEI\ITl WITNTE MESA TJRABW]M MNIL F'XELD DATA WORKSffiETEIOR. GROTI\ID WATER' Descriptioa of SamptingBvent: $gD (,)*aon-a h fzno*lNl'*tL rocation (*", oame) . A h).. ).7 -- irlff"tilu * ui*s 6u, r lJ, fl,l g- Date andrime forPurging ? - 6-66 ana sampling (if differen0 Well purging Equip Use* -(pump or -bailer Well Pump (if other than BennEt)S-ED- SamptingEve rtLJW.ry.* h*,*[,WA3r*. Well Sampled in SamplingEvent Mri]Ll plrBuffer 7.0 '7 4- - pHButrera.o ' 4 d .- SpecificConductance??Z-uMHOS/cm WeUDepth, 15 Depth to Water Before Purging. 5 L . q I Conductdnce tavs) l5T7 - Well WaterTemP. (av$-it-)J- ' CasingVotume(V)4' Weil: aX-Qct (.653h) 3" Well;_-ega-(.367h) pJlofW:iter(ave) .. 7:0P . *ioi"o*riarGh)?).5 tuoiditv 0. . (:' , I I t I t I Temporaffe. i(.-fi1 _. RedoxPotentiur 6nn) -}Ll7-- fr..* ItrerirherCona.-i\fs.ccg-d,- Ext'l Amb. Temp.(priortosamplingeven0-:tQ:Ci- .., j :: ;:: : : : ::P"gta-ttlt5'-- conductanceL Conductance lSLl-5, . I - pP remperature l(.'81- RedoxPotentialcq-JqJ-- RedoxPot€ntiatGh) iqdd IbrbidityL Tubidiry Q- fi*jls$- Gal.Purged--)! ..{- Time:-l$S-- Gal. Purged. jL,') conductance |SOL - Conductancej5Jg pn , - f.o8 - pn 7'10 - T"mp.*ture l5'L6-- Redox Potential (Eh) al) ' {,+L o I t I I t t I I I I I I t I I I I I I Mill-&;ouarlwaterDischargePermit Dater [1'17-06 Reviriou I Groundwa@rMonitoring Quality Assurance PIan (QAF)Page(l of4l n*id*v{r*aidtwff Volume of ltiater Purged 'iYkn F'c'df,arr Er ars $&noq*d . . 3t't ., -. Purrping Ratc Calculalion FlowRate(Q), ingPm.Time to evacuate two casing volumes (2Y) 5160 == o.? ? T=2Vle= l'70 Number of casing voluncs evacuated (if other than two)--L,.I5 * If well evacuarcd to dryness, number of gallons evacuated ,tl/4 -- Name of Certified furalytical Laboratory if OtherThan Energy Labslsscj-cS" Jdc"I ra} oT rroc.g Tvpeof Samule Samnle Taken (cifcle) Si,ihri,le Volumery(indtcate-ito&et Fi[ered (circle) Prtcgrv.rtive Added (circle) 'thi{il as sDecified he.torr) VOCs NN 3x40ml YOE - HCr-N Nuricns N fmml Y H"SOr N tldawMetals r)N 250:E,i &)N HNO.}N All Other Non- Radiolosics 0N 25OEl YGD No Peservative Added GrossAlpha UN I-000mI fnN H,SO, m N Othcr(speci$)E)N Samplevoluue @ Eapreservative is used SpeciffTypcand Quantity of Preservative: I I t I I I I I Mill - Gmundwater Discharge Feimit Groundwater Monitoring QualirY Assumnce Plan (QAP) AET&CHMEI'{T N DescriPtion of SamPling Sampler Losation (weil name) ,Mhl 18 Name and nirialsJat Dare and Time for Purging , t{; L - of and sampting (if different) ruztt well purging Equip use& x,pump or -bailer wbtl Pump (if other than Benne0-..(l"E-a-- SpecificCondurt*""41V- rrtvltoStr^ WeltDepth llo - Depth to Water Before Purgins.-7-&93- Casing Volume *lf #;, :fiil' Conduehnce t"vel \nq, , pHofWriter(av$ ' L'61 - wellWatsrTemp.(avg)-J]L83- RedoxPotentiatCErrilOl-rurbiditv-@;q weathercond orrrfr6<1 - Exfl Amb.Temp'(priorto samplingeven Fanrr*ahnne 3qOi conductance 38t5 .-. , '' - P Pu -- -9'05 temperatureL remperature lLt'[]-- RpdoxPotentialGh)-gE--- RedoxPotentialGh) l'l0t ' Trubidig& TurbiditY-![J Datc 2.25.A7 Revislon: 2 Page40of 4l I I I I I I I I I I I WHXTE MESA {JBANI{.IM MXT,L Gal'Purged lLS l-nndrrctance a(AO conductance 3lJ7o : prr !-o5 -Tsmperature 11J5 Redox PotEntial (Eh)-315--Redox Potential $.h)-W- f^ol , 0L ;'.{*r.L 0 - (:j ft,6iditY -- I I I I I I I I I I t I I I I I lr lr lr Volumeof WaterPureed Punping Rate Calcula$ion FlowRate(Q), ingBm. S/$$= = ,-33 Number of casing volumes evacuated (if other than two) att4 If well evacuated to dryness, number of gallons ovacuated lvrn ' Name of Certified Analytical Laboxatory if Other Than Energy Labq Miil-GrourdunterDischargePermit Date: tt,17-06 Revision: I Groundwater lVlonitoring Quality Assurance Plaa (QAP)Paga4[. of4l. Time to evacuate two casing volunes (2V) T=ZVIQ= @0r tarl ISS., tlo - Tvusoj$amPle Sample TakeF (circle) SriindleVolumeffi;;Eiltg.red (cirde) Fr?servafive,Added fdrcle) 'thditag rneciEed trelow) VOCs rUN 3x4tlml Y d{, r..HCX.x N I\Tntrip.nl*N l00ml YN'H,SOI N TleawNfeials N 250rhl Y)N I$IO. M N All Other Non- Radioloeics U)N 25Oml r@ NoPteservatiw Added GrossAlpha tr)N 1.000 mt triN H,SO. r?l ttt Other (spscify)uhr Samplevolume Ye)(9 If aprescrvative is use4 Spec$I}pcand Quantity of hcservative: I I I I I I t I t I I I I I I I I I I Mill - Groundwater Discharge Permit Groundwater Monitoring Qualig Assurance Plan (QAP) bate: 2.25.M Revisioa: 2 Page40of 41 ATT4,CTTMENT r WEUTE MFSA E]RAM['M MILL ETE[.,DDATA Description of SamPling Sampler Location(wellname) I4W aQ Nameandinitials Date andTime forPurging I(-5-o( and Sampling(if different) url- Well Purging Equip Use* I-purqp or baiter Well Pump (if other than Bennet)-..lLLE-D- snnptuen *tw\!r"n well sampled in samplingEvent:z/A- punrtert.o -... 74 pllButrera.0.-. .-.' 4 d - Specific Conductancej?Z-ultffIgs/em We11 nepttr , l?--7 - Depth to Water Before Purging-I)3-ijl-- Casing Volune (V) +' WeU: i5 5t (.OSSh) conductrinceCodfu 3'Well: (.367h) pHofWdter(iivg).i'. 6.ttf - .,: RedoxPotentiaf @DLflLfurUidiry 7' 11IMell Water TemP. GvdJ5][- Werither Cona.-&S!Cr-51 Erf I Amb. Temp.(prior to surnpting "u"ot)-!ff-'e fino:]2L50--Gd.Purged L.6 conuuctu+c" H $O - p Temperaturq lq 81 Redox Potential (Eh) 17 tl - Ttrbidity 5 .i3 ruoiaity-L{.tQ Ti,*, ot)O-Cuf. P* Conductance LlI4 I - Condu"t.oo LIM pn . L.tlI pn -- t'qq . temperature l{'QO - temperature .- t5'00 . Redox Potentiar Gh)--17$Redox Potential (ED lt I - {^o* Time0ff(X). -Gal. PurgedJ:A, . * conductance LlS 8[) ; t ':; Redox Potential (Eb)-l-fij- 661 lI.\ I I I I I I I t t I I I I t I I I I I Mill - Crrouadwater Discharge Panit Croundwater Monitori4g Qualig Assuraace Plan (QAP) Date: 11.17.06 P.evision: I ?agetl of41 t*uioiryff Volurneof WatsFurged PumBinF Rate Calculation Ftow Rate (Q), in g,pm. Time to evacuate tuvo casi4g volumes (2Y)s/60= = " 33 - T=zvlQ= qq Mi;. Numberof casing'volumes evacuated (if other thau two) alll.l - If wcll evacuaied to dryrness, number of gallons evacuated -Arla . Nameof CertifredAnalyticalLaboratoryif OtherThanBnergylabs A,..iaon Wrrl L^t. '- [r<] o[ rf0CS Tvneof Sample Somple Taken (circle) SriinfleVo"luBq 0ndesEltoilber Flltered (drcle) Prbrenrative Added (circle) thtiii as speciEeil helow) VOCs Y}N 3x40ml Y HCL I N Nu8ients r\N l0Oml YTN H#Oe (N IleewLdefals r\N 250ihl Y)N Iil,lol NAII Otlrcr Non- Radiolosics gJN 25Oml r@ NoPteservative Added GrrossAlpha 1N l.00Onl DN &SOr (v N Other (specify)|{/N Sauplevolume Y(s e) ffa preservative is useq S,pecifyTypeand Quaqtity of Preservative: I I I I I I T I I I I I I I I I I I t Mill - Groundwa8er Discharge Pennit Groundwater Monitoring QualitY Assurance Plan (QAP) Dxe: 2.25.07 Revision: 2 Page'!,Oot41 ATTA,CTflMENT I ITEMT'E MtsSA URANII'M MIL[, F'XE[,D DATA WORIffiHEETS''OB GROIJND WpTTER Descriptionof SamplingEve*: FLD (vlPovt haanvulN,*il -Locarion(wenname) .-&. \,\J 10 iffiiliturttatsG*r llrll,ig Date and Time for Purging { ' tl 'OS --and Sampting (if different) ---xt lh Well Purging Equip Used: Apurnp or -bailer Well Pump (if other than BenneD:I6D- samptinc rvent L?uaf-Taa{j &lrantJutaD0.Eev. Well Sampled in sampting Br"or-rgfr1jl-S pws,rtrutl 74* . pHButrera.o '4'd- Specific CondwtarceSlL :fifrt}Stcm WellDeprh, iJ0 - Depth to water Before Purgins-f8-.15- casing volume tlf #;tl_}}.!Hil}, Conducta'nce(avd ltLi - pHof,Wdter(avg)& Well WaterTemP. (avs)--l-S L\5-RCdoxPotsntial (ED-IJ9 Turbidity - (-\ E:rf I Amb. Temp.(prior to samPling event)-301(- rim",-r:a2$-*- Gal. Purged-ll--Time:-ti95Q-Gal. Pruged-ll-fi.S' * Conductance ctrO3O - ,; ,conducra$e - 518..1' prr L,75- . pn,.-,.L# -temperature l\.61 Redox Potential (F.hJLL- Temperature l5;6,[- Redox Potential (Eh)- . l t0 .- furbidity (') - TurbiditY. ConductanceL Conductance )(J6O - pn G.QO - pH- tlg _ temperature. It'L}.fi Redox Potentiar (eh) .l 85-- remperature 15.P3 . Redox Potential (Eh) l,Xft . f,.*- (]'6,rb - A i .'.i I I I T I I I I I I I I I I I I I I I MiII - Groutdw"rta Discharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) Date: Ll.fi.A6 Revisioa: I ?age4l of47 Volume of WaterPurgea Pumphg Rale Calculation Flow Rate (Q), in gpm. Time to evacuate two casiqg volumes (2V) s/60= = "33 . T=2VIQ= l):0 Number of casing volumes evacuared (if other than two) v/A - If well evacuated to d4rness, number of gallons evacuate.d aJ./& - NameofCertifiedAnalyticalLaboratoryifOtherlhanEnergyLatrs. AWL - i scl olvoc\ Tvoeof Sample Sample Taken (cinclg) SiliinrileVolume - (indlcateif other Filtereq (cirde) Preservadve Added felrde) VOCs [Y)r N 3x40ml Y{}D HCL (YI N Nutrients N l00ml Y H,SO. (Yj N IICaw l\t[etals BN 250ihl rylN IIINO. /") N AII Otlrer Non- Rodiolopics aN 25Oml Y€D NoheservativdAdded Gross Aloha /nN f.fil0mI ar) N II,SOA TY) N V)N Samplevolume Y(g @ Ifa preservative is use{ SpcciffTypeand Quantity of P,reservative: I I t I I Mill - Croundwater Discharge Perrait Groundwater Monitoring Qualiry Assurance Plan (QAP) F'[E[,[} DA.T'A DescriPtion of SamPling Dae: 2.25.A7 Revision: 2 Page40of 4l aTTASSMENT I t I I t I I I I r.ocarion(wellname) A^\rJ 5 ffiL'il' iniriatsffiu,r ila/l,iL?r- Date and Time for Purging ( - Ll {&. . , and Sampling (if different) a , rA - welt Purglng Equip use& Jpump or -bailer rjlbll Pump (if ottrer than Bennet)JLLE- SamptingEvent Otl4(pa( LlfrutrUlq,aP{3rev. Well Sampled in SamplingEvent- lttW lo.J pngrrtfurt.o 7 4* PlBffiera.o ' 4'0 ' Specific hnductanceSflL-u\tfiIOStcm WeltDepth 130 ' DepthtorrarerBeforePurging-!|16 casingvolum","lf#;l,'*t[7 .!fiil}, Conducance(avg) -161b . pllofW:iterGve). ?i( WelWarerTemp.(avS)-Js-N-- RedoxPotentiat(Eh))qg-Turbidity $ WeatherCond ,M,r:ril+ 4lo.r-d,q. Exfl Amb. Temp.(priorto sampling"r"n0-;5L- Iimffil*-Gal.Purged L6 Tirr"- -Gal. Pureed-Jg,fi -* conductance l((6 . ; Redox Potontial (Eh) 35q (') gen6ustarce .1718 pI{ 7.lQ- remperaturejS"0I -RedoxPot€ntial ch)--}}I- o pH 3ll -Temperature l5'O'1.- TurbidiU WNruT'E MESA IJR,AMUM MXI,L I I I I I I ti","tgU-Gal. Purged )-Q J rime:_[LLL- Gal. Purged--3j"f -r-nnrlrr.rnnce l6 U 5 conductance [eq5 pH. 7'?0 TemperatureL Redox Potential (Eh) 30J-- prr 7.)-o - t"tp"*tur" t\'{l - RedoxPotential(ED 3lq -. ' f,"-uf*U- o L:i I I I I I I I I I I I I I I I I I I I Mill - Groundwater Dircharge Pumit Groumlwater lVlonitoring Quality .Assurance Plsa (QAP) Date: 11.17.06 Rsvision: I Page4l of4l VolurneofWaterPurgedffiId . 3it1f . - . Punrpine.Rsoc Calculation Flow Rate (Q), ingpm. Time to evacuate lwo casing volumes (2V) s/60= =. " 33 T=2VIQ= I15 ^4;r. .. Numbor of casing volumes evacuated (if other than tlvo) I 'O : If well evacuafed to dryness, number of galtons evacuated ,'J/l\ - - . . NameofCertifiedAnalyticallaboratoryif0therThanEnerrytabs A\^]L- -l .5C+ oP UOC'5 tvoe ofSample Sampte Takert (cirt[o) SiihrileVolume,- findicsEifother Eiltsred(circle) PEes$mrdveAdded (,gif,cle) thliid rc sneciEed below) VOCs fv) N 3xzl0ml Y AD T,.Hcr- ff) N Nutrieets U)N tOOml Y(I\[ESo. 111 ttt Hdawhfetals ff)N 250rhl r)HNOI (T\ N Itt Other Non- Radiolosics UN 25Oml Y(9 NoPrqservative-Added Gros$AIPha fv) N 1.0mEt Y)N H"SO, fY\ N Other(specifY)vN Sanpldvolume Yg)(5-) Ba preservative is use4 SpecifyType and Quatrtity of Preservative: I I I I I I I I I I I I I I t lr lr lr lr SamptingEven, Cl,ntfrrb {Arf O[ 'nre{.U"v'WellSampledinSamplingEvent- rA'U}ct ,un*rr.o -. '741 - pHBuffer4' WeritherCond Orrrr4.6-<L -- E:rt'l Amb. Temp.(priorto sampling event)-il : -C:- conductalce i{Ofl . conauchnce.- -L{006 ' ' , Redox Potentirr fEuUl-23-- temp"r"turei $ '5q RedoxPotsntial Gh) l[{5 turuiuity ffi& l.l,'31 . rianrr*ninnce q0 0f5 Conductanc" 3153 - pH G '18 *r L3i - t"*p"*nr" iS-{I - t"*p"** i5.'05 . Redox Potential (gh)--$!--Redoxloten,i.r (Eul lfi) Mill - Groundrrrater Discharge Pen"nil Oroundwater Monioring QualitY Assurance Plan (QAP) ATTACEIMENT 1 Description of SarnPling Sampler Location (well name) tll\Al 3] Nameandinitials. Dat€ and Time for Purging . 6 ^5:.Q'd and Sampling (if different) n t r rr Well purgrng Equip Use& "{pump or -bailer Well Pump (if ottrer than Bennetrc E-l)- Date: 2.25.07 Revision: 2 Fage 40 of4l Specific ConducranceifZ--:TMlloS/cm Depth to Itrater Before Purgrng--U_6- Conductrince(oog), 3{t} Well WaterTe*P. (u,gll-q'ql- ' CasingVolume(V)4"WeU:3L )\ G653h) 3 " Wetl:--'ltrt--(367h) pHofWater(av$-6.A1 - Redox Potsntiat G.hil-fiLTurbiditv l(\ '05 {^ol WHITE MESA URANUIUM MXI,N, 6aL l(\"t -6,01t t ..; I I I I I I I T I I I I t I I I I I I Mll-GrounelwarerDisctargeFermit Dsie: LL.17.06 Revision: I Groundwater lMomitoring QualiEy .Assnraace PXau (QAF)Page4l of4l tr_ Volume of WaterPurgeA Pumpiqg RaIe Calculatioe FlowRate (Q), ingPn.Time to evacuate turo casing volunes (2V) s/60= = .,?3 - T=2VIQ= Number of casing volumes evacuated (if other than two) | . }. . ,- Ifwellevacutedtodryness,numberofgallsnggvac'Iafed A)lA --. - -- Name of Certified Aualytieal Laboratbry if OtherThan Enerey Labs Aa"{i.a^ W.t L! - i r+'} oCUoCS TvpeCf.FmDle Saqple Trken (cinclel SriinileVo,kme flndfeaEifo&st Eittcred (circle) Preservrtive Added (cirde) VOCs NN 3x40ml Y AII HCr- fv\ N Nutrients N l0Oml Y H,SO.N H6awMetals r)N 250hI Y)N HNO" U) N All Other Non- Radiolocics g)N 25OnI Ye9 NoPreservative Added GrcssAloha FtI N I,mOml Y)N H"SO, m N Other (spccify)VN Sampldvolume Y@)s Ba preservative is use{ SpcifyTypeand Quaotity of Preservative: I I I T I I I I I I I I I ll lr lr lr lr lr DescriptionofSamplingBvetrt:. <Y' ,(ktlatvtl '' QLt'**d' ttvHL'L " Locarion qwetrawne) lww I O -, i#11'o'""o ?n^-/J*orc rlifferenf) Date andTime torPrxgtng -9' 1.3..0{ and Sampling(if Well purging Equip Use* -fr*p or -tailer Wetl Pump (if other than Bennet)- --:- ' - Mill - Groundwata' Discharge Permit Grouudwater Monioriog QualitY Assurance Plan (QAP) FIELDDATA Date: 2.25 -07 Revision: 2 Page 4O of4l ATTACIIMENqI WTUTP UPSN URANIUM MILL SpecificConductancelG-:*f;ff}Slcm WellDepttt" lA - Depth to Water Before Purgi re. ek-- Casing Volume *if #i',t:,!:;lP Conductance . RedoxPote'ntial(Eh)-=-Turbidity- Ext'l Amb. Temp.(pnor to sampling eve ^qA / Z at Conductance f' 'ps .'L'7,8 -Redox Pot€nti oXgoLN 0-- ,*rorO ., 0' 0 - (-.- ' RedoxPotential(Eh)- Turbidity . Well Water TemP. Gve)----]- WeatherCond./a r : irle Ti*tt-Gal-Purged ......TimE:-Gal. Purged- Redox Potential (Eh)-Redox Potential @h) } T Al*V- (i I I I I I I I t I I I I I Mill - Groundwater Discharge Permit Groundwater Mouihring Quality Assurance PIau (QAP) TurbiditY T.fibidity, '--_ Date: 11.17O6 Revision: I Page4l of4l Pumpi+g Ratn Calculatign FlowRate(Q)'ingpm. \-Time to evacuatE two casing volumes (2Y) +-_ Volume of WaterPurged When Fietd Parameters are Measured Number of casing volumes evacuated (if other than tei'o). - Ifwellevacuaiedtodryness,numberofgallonsevacuated - T=2VlQ= Name of Certified Anatytical Laboratory if Other Than Bnergy Labe lt-^'L , ' -1*r. l/o-> Z frwe I I I I I I Tvpeof Sa.mPle Sample Takgn (circle) SamdeVqlu+q {inrlicate if o&er Etltegpd (circle) Pr-eserrative 4dde4 (cir,de) 'thtid qs specificd below) voG UN 3x40ml ETX- EZ^ N Ntffients IN l0Oml Y6P H,SOr qf N HdawIVtetals 2N 250inl IY> N IINOr & N fut other Non- Radiolosics aN 25Omt Y8 NoPreservative Addcd Gross AIDha MN 1.000mI ft)N H,SO, gJ N Otlrer(specifY) ["r, 4,t*:7 yN Samplevolume YN lf a preservative is used, SpecifyType and Quantity of PrEserva6ve: I I I I I I I I I t I I I I I I I I MiU - GroundwaterDischarge Pennit GroundwataMonitoring QualitY Assurznce Plan (QAP) ATTACHMENT 1 F'TE[,DDAT'A DescriPtion of SamPling Location(wellname) AA\AJ 61 Nameandinitials Da1" andTime forPurging t- 5 -Oil and Sampling (if different) "rz,t- Well purging Equip Used: f,pump or -bailer Well Pump (if other than Bennet)-O-E-D-- SpecificConductanceifZ--uMll0Slcm Well Depth L1?'6 -Depth to Water Before Purerne-77-E-- Casing Volume ,'rrf #fi'ffiSf;fll' Cooduc&tnce'(avg) 3qq1 . pH ofWrlter Wel WarerTemp.(avg)-llL33-- ' Redox Poientiat @h) lrl-Turbiditv t0 .'.'( Weather ConO.$x4rad-- Ext'l Amb. Temp.(prior to sampling event)Lf-(-- Date: 2.25.M Revision: 2 Page40of4l WffiIIE MESA {JRANIUM M[I,L Time:_----*- Gal. Purged--j* Time:- Gd. Purged- (:i f,..t I 6* I I T I I I I I I I I I t I I I I I Mll-GrousrtwaterDischargePermit Date; 1i.17.06 Revision: I Groundwater Monitoring Quality Assurance Plan (QAF)Faee4l of41 r*biairyfl. Volumeof WaterPurged Pumping RA!9 Calculation Flow Rate (o, in gpE Time to evacuate two casiqg volumes (2V) s/60= =& T=2VIQ=. aao .- Number of casing volumes evacuated (if other than tt /o) I .} If well evacunted to dryness, numberof gallonsevacuated.- .,'.1/A - Name of Certified Analytical Laboratory if OthcrThan Energy Labs - - Tvpepf Sarynlq Samole Taken (circlel $iainrileVolume findica&if olher ffilterei! (drele) Prrservstive Ad4gd (cirde) 'thxi4 as specified helow) VOer N 3xzl{)ml v HCT,N NuEients N l0OEl Y HeS-Or N H6awMetals /N 250rht )N HNO.N en Other Non- Radioloqics 00N 250mt Yu)NoPreservative Added Gross Alpha $)N l.m0ml ff)N HzSOa, a0 N Other(specifY)ODN Sampl6.volume Y(g If aprcservative is used SpeciffTYPoand QuantiU of Preservative: I I I I Date: 2.25.07 Revision: 2 Fage 40 of41 I I I I I I Mill - Groundwater Discharge Ferrnit Groundwater Monitoring QuelitY Assurance Plan (QAP) ATTAPHMENT 1 lIiH[TE MESA {'RAI{T['M MXLT, E'NEL.DDA.TA DescriPtion of SamPling Sampler Location(wellname) A\d 70 Namtandinitials' DateandTimeforP.rging B- )l-0't .. -andSampling(if different) ruz'r weupurgingF4uipused: lpumpor bailer wellPump(ifotherthanBennet) (l-E-L- SpecificConductancei?e-TgH6S/cm WellDepth ' 1l{ ' -Deprh to Water sefore Pursrn&-U' S --- Casing Volume t"rf i#;tt'#?:Hll' Conducance(avg) tbt} ' pHoflli&iter(n'gk We, Water Temp. (avg)-l9.Lg-- Redox fotentiat @fr)-$lX-turUidity \-' 5?' WeetlprCond.-:a!g Ext l Amb. Temp.(prior to sampting even$-ag oc j-fl I I I I I I I I I (__.,; f^,ol Tiroet-Gal' hrged- {"* D*o)lca1"o[ A^u] ]} I I I I I I t I I I I Mill-Grousdu,aterDischargePeruit DatE: 11"17.06 F'evision: I Groundwater Monitoring Quality Assuraace Plas (QAF)Page4t of4l t*iairyfl. Volumeof WalerPugeO Pumping Rate Colculation FtowRate (Q), ingpm. Time to evacuate.tst'o casing volumes (2V) s/60= = , ,33 1'=2y1q= 1ff4 aatn Number of casing volumes evacuated (if other than Ifwellcvacuatedtodryness,numberofgallonsevacuated' ^t/A - Name of Certified Analytical Lebofatory if Other Th'tr Energy taUs. -/l,,.,q'nft. Ff s'l Lo h I scl of voc'J I I I I I I I I IyIeof Samele Samnle Taken (cinchl SiinrleYqlFme fin4cahifP!he; thnt gs spedffetlr;r;.,1 triltBreil (circle) f:eeuegYsAd&*(clrde) 1N 3x4Oml Y H('r.lNV(rcs N Nffiienrs N l0OmI YEO I&5l}4 EriawMetols N 250h N Hl$o,N Ei- otner Non- Radiolosics UN 25OEl Y--6 NoPrcservative fddad gN Irrsg., 0, xY$) If a preservative is' use4 Speci$T)ryeand QuantitY of heservative: GrossAIPha N I.(xr0mt Other (sPecifY) (.e^c*l tr.etqdcs uN Sampldvolume Y (JY D^p,\',.o*e OF A\J }} I I I I I I I I I I I I I I I ll lr lr lr tocation 1ro"tt ou*r) 14 [nJ ltl - iu#-*o in itia'r, ft "" ' f]' / /" 'l^'a DaeandTirne to.p,wgag7 /7/I{ ,o,dSampling(ifdiffereng ^ru^ - well purging Equip used: :6p * -aaihr wetl Pump (if other th an Bew,*)-!fl*- Jealaart b S*pting1veftfi*g - /l4ra+q Prev.WellsampledinSamplingEvent--Ml- pngrrtrrt.o.V'd * P*t}ffier+'O---"q'0 ' SpecificCondu cronceSS-L vbfrtostcm WetlDepth llY '7 - Depttr to WaterBefore Purgine-[E-Jjl- casing volume (v]f #fi,.t!\![|nP cotrductance (aW) 3-GH L ... - -pH of rWriter (avg)=---hr woll lryarcrTemp. tureil-L3-6.- n"ao*pot"oti'i G$ilLr*uiditv O' l'5 Weathergond. clf.c h1.., <XirS Ert'lAmb.Temp.(prior3osamplingevongilL'j- enna,wtawe '$L74 , cona*tuo $10 ' '' pH ,[ 51{ .. temperature lS'!.cl- Redox Potential feD-!95- ruoiaity 0 AjlD 0.a t Mill - Groundwater Discharge Per-mit Groundwarer Monimring QualitY Assurance Ptan (QAP) aTTACIIMENT 1 WMIE IIiNSA T'RAI{TTIM MXLL FIEI,D DATA WORKSHEET FOR GROUND lV/aTER' Dascription of SamPling Event: Date: 2.25.A7 Revision: 2 Page(Aof 4l p temperature l5^$-8 RedoxPotentialCh) tlLl/ -o:Ir+O Gal.time:SD-SEQLcat. conducunce 3(63 - prr, G.6t - conducrance 3658 -temperaurcjS o? -- temp"'atur" 15 -o{ . RedoxPotentiot feh)--!5.5.-RedoxPotential fsD.q55 , 'f .';\'r -ffou,).fi o,.)7 -f{d-;J;y :_01{, :- I I t I I I I I I T I I I Mill - Gmuadwaer Discharge Permit 0rounrlwater [&niCIring Quality Assuranee Plan (QAP) Dats: LL.17.06 Revisiou I Page4I of4l Time to evacuate ts/o casing volumes (2Y) T=2VlQ= 47 l.,\;a*b.r TtfiiW -----:: - TurbiditY Voluue of WaterPru ll.Q t -Pumoine RatP Calculation FlowRate (Q), ingpn 335/60= = Number of casing volumes evacuated (if other than two)- d /A - Ifwellevacuatedtodrymess,number of gallonsevaanted- .*,tt rl /1 - Nume of Certifred Andytical Laboratory if OtherThan Bnerry Labs ^t Lt* I I T I I I rvogofsu4lite Saimule TakeE (qifflel I$tered(dryft) Pressnrative Added G-rslel VOCs Y 3i40ml v.(N Es. Y rN Mrtripnts Y l0Oml Y.H*SO, Y N HdawMctals r$N 250lht ry) N ffio, (n N AII Other Non- Radiolosics Y@ 250mI YAU Noheservativoldded GrossAhha YN)I.00Oml Y$n H,SO, Y IN\ Ottrer(spec8)YW Samplbvolume Y0i If apreservative is tse{ SpecifyTypc and Quaatity of ftreservative: I I I I I t I I I I I I I (' Date: 2.25.ff7 Revision: 2 Page(Sof 41 Mill - Groundwater Discharge Permit Grounduater Monitoring QuatitY Assurance Plan (QAP) Description of SamPling Event: ATTACHMEI{T 1 WXTITE MF.SA URANIT'M MILL T.IELD DATA WORI(SEIEET FOB GROI'NI} WATER Specific conducrance.lt-L-u\6l(oSt cm Depth to lVater Before V*g"*-fl- \L- Conduotdnce(avg) /4 WeU Water TemP . (wg),--A,* WellDepth -. . ..- Casing Volume (V) 4" Well: ' ' ,a C653h) 2,1y"11. , rra (36Th) pH of Weiter (a,vg,) l- i Redox Potsntial (Eh)-a.Afurf idity,q ne DaE and Time tor twgl$g -? - ,/ 7 / 4 9 nd Sampling (if different) ar a- Well Purging Equip Use& 6mp or -Auler Well Pump (if o*re r th6Bennat)-@-&eluare b l.ocarion lwetlnawl fl4n) 2b N;#*d intria.r f "",/]'//;'!*1 - pII Buffer 7 Su*tn7gvqtw Prev. Well Sampled in SamplingEvent-a/A -rrrr,rrFcr?o 7'Cl oE,hufferL.O ' 4'0 -pHBuffer4.Q Weather Cond c l r4 \, ^ -Y=- l{ or E:rt,l Amb. Ternp.(prior to sampling eve ^il-2-[L RpdoxPotendal (Eh)- Turbidity -- @-Gal.Prrged N ft -., Timc------Gal.Purged------:* eonducta*cefu Conductance -; r"mprratur" I'f '95 Rsdox Potential rsh') 23i- " LlTurbiditYI I Tinre:-Gal- Purged- Conductance- Tims-Gal- Purged- Conductance . I t I I -C*u"t!fr"ur,t,y (:i I l: I I I I I I I I I I I I I I I I Mill-GroundwatuDischargePermit Date: 11.17.06 Revisioff I (hourutwafsr lllonitoring QuaIitY Assurance Plan (QAP)Pap4lof 4l T'urbidity- ------- Voluure of Water P[rged- Puurpins Raie qahulation Flow Rate (Q), in gPm- 3 35/60= = Time to evacuate,two casing volumPs (2V) *tAT=2VlQ= Number of casing volumss evacuated (if other than tutol -, p/ * lf well evacuated to dryness, numberof gallons evacuated zr /A Name of Certified Analytical Laboratory i[ Other Than F.netgy Labs ^/ / r* : Tvnsof Samole Saqnle I'qken(eircle) SiinriteVoIuIEe fiudicoteif other Fllteted(cirele) Pregerrotive A&le4 (9,o1") YOCs a1 N 3x40 nl ay. (N) ,..HCL (Y' N Nutrients YN 100ml YN IISOr Y N Edawlfetals N)N 250hI tyi N HNo" rT N All Other Non- RsdioloPics YN 25Oml YN NoPreservativE Added Gross AIPha YN 1.000 mt YN H,SO, Y N Other(sPecfi)YN Samplevolume YN If apmsenrative is usc4 Specify Tlrpe and Quantiry of Presewative: I I I I I I t I I I I I t I I I I I I r DatE: 2.25.07 Revisioa: 2 Page40of4l Mill - Gmuudwater DischargePennii Grourdwater Monitoring Quality Assurance Plan (QAP) ATTACflMENT 1 WITITE MESA ['R^qNT[IM M[LT, Description of SamPliag Lpcation (welt narne)--t \:lq - g -iZ Nameandinitials DateandTimeforPurging 7 /7/lg *dSampling(ifdifferent) a.r/n - WeltpurgingEquipUse& n6por -Uailer WellPump (if ofirer thankewetlkb-al@{u.'re b Prev. Well Sampled in SamplingEvent l4!dt\ ptlg$trert.o--7'A specificConductanceis.L lMmashm WetlDepth,-- ['3f 5 Depth to WaterBefore Pureins--7.Loq- Casins Volume "If #1%:3;il' cotr&ieuhceCavg)fu pHoJ'writer@vsl,l t')f ' wenwarerTemp.(ave)--15.3-l- n"apiPotemtiaig+D)Urrrbiditv It).0'1 WeatherCond.-Gl oqfl.\ Bxt'l Amb. Temp.(prior to sampling cvenQ--$ o <l plhutferh.o ' .4'0 FIEI,D IDATA, WORKSffiETEOR GROUI{D WATER Conducance 38)8 -pH .. t-lq TempentureL RPdoxPotential'f"nl "('q fiiper-lQal- Qal. PureedJfl,ll.- conduchnce, 3K3t . i temperature [5 .lt'l RedoxPotentinl(Ehl J-lL , ' Turbidity -ll,Xr- toiaitv lG'l - trnnrlrrctlnce \77e conductance 513f,f - p l'RedoxPor€nti.l(EhD)ff-- RedoxPotentialCeh) ),0? ' ' fuoL;r;h 5 3[s - ( l'.; t"rp"rnn* J{'77 -- 'fiu,Jfi 7 6i I I I I I I I I I I I I I I I I I I I Mill - Grorrndurater Discharge Permit Grornrlwuier ilf oaitoring Qualiiy AssrnaaPe Plar (QAP) DatE: ll.17-06 Revisioa: I PageAl of4l Tu&idrty-.--=----: Volume of WaterPurge Pumpin$ Rate Calcul4ion FIowRate(Q), ingpm-Time o erracuate two casing volumes (2V) 5/60 = =----i T =ZYIQ='f-tll Mln33 Number of casing volumes evaeuated (if other than two) I - Ifwelleyacuatedtodrymess,numberofgallonsevacuate.d, rr;z//4, Name of Certiftod Analytical Laboatory if Orherlhan BneryyLabs--a/A Tvneof Samiile Salmnle T"I*rt (eirtle) [iltsred(drctd) Preservotive Ad.Ied (dfcle) VOCs Y 3x40nl Y.(M EC[. Y N) Nutricnts Y l00El Y(N H'SO, Y N) HirwMeels TY' N 2sohl .Y} N I|No. ff) N All Othcr Non- Radiolosics YU)250 nil Yq9 NoPrsservative Added GnossAlpha {t) N 1.000'ml T\N H,SO, trl N O[pr(specifY)Y@ Samplivolume Y@ Eapreservative is use{ Spcci$Typeand Quantity of P{cseryative: I I I I I I I t I I I I I I I I I I I Mill - GmundwaterDischarge Permit Groundwater Monitoring Quality Assurance Plan (QAP) ATTACSIEM I WHITE MESA T'RANII]hI MILL ( Date: 2.25.W Revision: 2 Page{Aof 4l FIELD DATA WORKSTMET FOR GROI'ND WATER Description of SamPling Event: Location (well name)@ Name and initialq Date and Time for Pnrgin e 33 0 g--and sampting (if differefi') p l a Well purging Equip Use& %u*nor /6ailer Well Pump (if otler than Bewwt)-a{fi-- SamplingEven tS*\ hrr*,rt*trA Prev. Welt Sampled in Sampting Uo"* I ' pHBuffer?.04 Specificconductance-4L1-ulr4ll0S/cm WellDepth ' utA ' Depth to Water Before Pwgtnl--n / k-- Casing Volume *rf ,#;',"f-,:[|li' Conducturce (avg) ^/ A pH of lMater (avg) #t+ welllllarerTemp.(avil-p/+-- RedoxPotential w)lltv Intbidity /1t/+ WeatherCon d. clut, \-*a,. Ext'l Amb.Temp'(priorto sampling wenrfit}';- Time:*, , Gal. Purged-----:-- Conductance- Conductance ' pH PH li* Temperature Redox Potential (Eh)- Turbidity- Redox Poteotial (Eh)- (. Time:- Gal. Purged-Time:- Gal. Purged i;^YW Redox Potential (Eh)- )13 l*t( t Redox Potential (Bh)- [.: I I l: I I I I I I I I I I t I I I I I L,filt - Gmuudwater Discharge Permit Ciroundwater iltonioring QualitY Assurance Plan (QAP) Datq t l.17.06 Revision: I Page4laf4l rurbidity ,,- - TurbiditY*.,n1- Volnrne of Water Purged When Field Parameters weMeustred N fr ' Pumpin g Rate Cglculation Time to evacuate two casing volumes (2V) Numberofcasingvolumssevacuated(ifotherthaorwo) il rl'- - If well evacuated to dqrness, uumber of gallons evacuafcd , ,nJ n- -- Naue of Certified Analytical Laboratory if OtherThan BnetgyLabs N r* FlowRate (Q), ingpm. i?60= --= -- Nh,T=2VlQ= ffiervntiveAddeil (cirde)meg|S"nPt"Saqnle Taken(clret6l $;inilqYqtuqe 0n{ica$P,if other thdii as spedficd Flltered (circle) helow) &N 3x40ml Y69n H(x, AN Y 10Oml YN ffio. ]C- N $)N 250iil o)N rruo, {f/ N EriawMctals ffffffffffffffff otfc,r Non- Radioloeics . ,- YU 25081 YN NOrIEUI'I GrossAlPEg IDN I fllOml glN IITSOd YN lf a presorvative is use( SpecifYTYPc and Quaciryof haservative: Other (sPec$)YCI9 Samplevolume br BkL I I I t I I T I IIELD DATA WORKSHEET FOR GROUND WATEB Description or somPr ingEi# Location(wellnume) f{'uJ Li N'"'[*A*itials-f*'"'r l^l"lliA"? r'H' DateandTirneforPurging-T.Q.ot.andSampling(ifdifferent)...N//r Welt purging Equip Used: y'pu*p or -bailer Wetl Pump (if other than Bennet):[ED;Ler[i eJ'tr Mill - Groundwater Discharge Permit Groundwater Monitoring QualitY Assurance Plan (QAP) ATTACIIII'qI{T,1 wIilTE MESA IIRANIIIM n/fiLl ( D^te: 2.25.A1 Revision: 2 Prye4Oof 4l SamPling Event-SJ Prev.lVell Sampled in SamplingEvent /u\li;f- pH Buffer4.0 t{'Q , SpecificConductance--1LZ-uMll0S/cm WellDepth 13) '5 - Depth to Water Before Purgine 'I I -oct ' " Casing Volume t"lt t[;tl'*,.![|ll' Conductance (avg)pHof Water (avg) " - Redox Potentiat (Eb)-Turb iditY Well WaterTemP' (avg)- weather cond . , n Ext',t Amb' Temp'(prior o sampling event)' m;.-.-Gal.Purged-Tir", , Gal.Purged---- Conductance Conductance - I I I I I I I I I I I (', Redox Potential (Eh). RedoxPotential (Eh)- Turbidity --Turbidity Time:-Gal' Purged- Redor Potential (Eh)-RedoxPotential (Eh) - Conductance*r D*p\ , ca\c ,rf -r\N Ll - 17 (--l; I l: I I I I I I I I I I I I I I I I Date: 11.17.06 Revision: I Mill - Grousdwater Discharge Permit Groundwater Ivlonitoring QualitY Assurance Hou (QAP)Page4l of41 *--Turbiditl ,,, -- ' Volume of Water Purged !i lren f.ieH faarnerrs as I'Ieasured 34' L Time to evacuate two casing volumes (2V) FlowRrte(Q), ingPm' , 5/60= = '* *T=2VIQ= 1t{1 Number of casing volumas cvacuated (if other thao If wellevacuat€dtodryness,numberof gallonsevacuated d/A -NameofCertifiedAnalyticalLaboratoryifotherThanEwe/.;gl.abs.D4l. filtered (circle) @rtivelaaco(circle)Tvpe of SamPle $pmp-te TeE"n (clncle) Srimi,leYotume (inilicate if other't[jid as gDqplfied helow) -HCL YYN}3xCI ml Y. NI YL'U5 - Y\P l0Oml YN)nso Y-_-E Nutricnq m I-rff) N 250hl fY} N Ile&vY wlsl4ro --A,ll Other Non-YS 250mI r0 ffirv"tirtnoo"o H"SO.- Y NIY 0{l l-mOmlCilossAlPha If apreservative is use{ SpecifYTYPe and QuantitY of Pr-eservative: Otner(sPecfi)Yw/Sampldvolume Y (S) I I I I I I I I I t MiU - GroundwaterDischarge Permit Groundwater Monioring d* ,ye"t**t"Ptan(QeP) *f, ArTAC4mNrl WIflITE MESA IIRANTUM MILN, r.IEI,D DATA WORT$IIEET S'OR.IMATER Description of SamPling +h Sampler Location (well name) A4 rd i3. -- Name and initials Date andTime forPurging Q-S.-98 and Sampling (ifdifferent) arl4 Wel purging Equip Used: X-pump or -bailer Wetl Pump (if other than genne0-(f$l)- Sampling Bvent S.p{cm[.r Crra.,-\ O.lcr Prev. Well Sampled in Sampling Event-grlL]C pllBuffer7.O 7-(r- pHBuffer4.O ..,t'l'D ' specificConductance:13f--uMHos/cm Welt Depth l1a '5 ' Depth to WaterBefore Pursre-ll L-il- CasingVolum",rrf ,#it}ffi,.!Hf,l, Conductdnce (avg)- pH of Wdter (avg)- WellWaterTemp.(avg)- RedoxPoteirtialGh)--Jurbidity- WeatherCond-Ert'l Amb. Temp.(prior to sampling event)-},XL DatE: 2.25.W Revision: 2 Page 40 of4l rannrlrrci.nnce iq1 L conrluctanee 3q8 1 t"*prtt r" l4'S -__ Redox Potcntial Ch)-lg1-- t"rnp"rut* lLl'.9.7 - RedoxPotential (FX> 117 ftrrbidity 'l?...7 --tr q I I I I I T T I I Time:-]5)Q-- Gal. Purged-aC ;!L-Time:ll50-Gal.Purged-3&1 - (-lonrrrrcrnnce iotSO(aanrlrrntantn 3qLl r"rnp"*to. lH,75 . Redox Potential (ED--IJS Redox Potential ff,O --i fil (:! lr.r.f b.Lct 'i-orb. Volumeof WaterPurged t I I I I I t I I I I I I I lr lr lr lr lr MiIl - Gmundwater Discharge Pemit GroudwaterlVfuniDring Quality Assruance Plan (QAF) Dare: ll.l?.06 Revision: I :Page(| of4t Plrmpine Rate Calculation FlowRate (Q), ingPm.Time to evacuate two casing volumes (2V) 1=2Ytq= eX.0 M;n. . ..al Number of casing volumes evacuated (if other than twol | - a If well evaqrated to dryness, number of gallons evacuated- ' d/4 Name of Cerrified Analytical Labomtofy if Other Than Bnergy Labs---41fi Uryes8EgIqde S_a|unte TakeE (circtpf SrluildleVo.Iume fin{icate if.other thti[+s.-geecifled helnrr) Filtrred (circle) Preserustivq A{ded (cirde) VOCs tr) I(3x40ml Y l'N) r.-Hcx. ffi lL Nutrisnts YNJ l0Oml YiN H,SO. Y & Hiaw}Ietals IY\ N 250frI Y)IINOI fY\ n rut Other Non- Radioloeics Y{D 25OmI YA9 NoPreservativFAdded Gross Alphe &)N 1,000 mI v)N H,so*- (y) 6I Other (sPecifY)re9 Sampl6voluue YLry If aprcservative is used, SpecfiTYPeand Quantity of Presenrative: t t (, Date: 2.25.07 Revisioru 2 Page 40 of4lI I I I I I I I I I I I I I I I Mill - Groundwater Discharge Permit Groundwater Monitoring QualitY Assruance Plan (QAP)Srf n ATTAC.IIMENTl WIIITE MESA URANII}M MILL IIELD DATA WORKSIIEET T'OR Description of SamPling Sampler Location (well narne) MltL [L{ - Narre and initialsf,""".' l-loli;.h'A- I r* Date andTime forPurging-l:X3$-and Sampling(if different) -. al.l't ' Well Purging Equip Used: Elrump or -bailer Well Pump (if other than genneq-l]-E l)- SamplingEvent S#<*[..Cr.+,*I\rJ.,\rr Prev.Well Sampled in SamplingEventigA- pHBufferT-04 pHBuffer4o- 'tl,D - SpecificConductancel4lZ-uMH0s/cm Wettoepth l}('7' Dep$r to water Berore purgin&lgt-o(- casing votumr ,"lt'i,Hi1"#,!:;ll' Well water TemP. (avg)-3-'cl-l-RedoxPotentiat(Eb)375Turbiditv O wearher cono.Se\s*^6_ Ext'l Amb. Temp.(prior to sampling event)-1sj3- conduct nce - 38) ct pn , ,. L-71 . RedoxPotentiar @h)- li-15-RedoxPotential (Ehl tFS Turbidity .. D-Turbidrty -Q- (.- , Conductance i76j , 9 ffiO--Gal.Pureed-}L5-lims; tdoO Gal. rrnnrlrrntanc.e 31 g conductance i?>a - pH . L.6tl .vn LQlu - Temperarure l{. L6- -- Redox Potentiar Ctr)---1e.6--(. -r, I Redox Potential (Eh) 'a7a TLcb.- o T,^rb. I I t I I I I I I I I I I ll lr lr lr lr lr Mll-GroundwaterDischargePermit Date: 1f.17.06 Revision: I GroundwaterMouioring '' ' ," QualitYAssura&ePlas (QAP) ;Paee4l of4l Volumeof WaterPurged Pumpine Rats Calculation FlowRate(Q), ingpm.Time to evacuate two casing volumes (2V) f =2YlQ= - l{ct U," Numberof casing volumesevacuated (if otherthan two) I '7 - ffwell evacuated to dryness, numberof gallons evacuated aJ/4 -' , Name of C,crtified Analytical Laboratory if Other Thaa gnergy I',abs J /A Tvpeof SamPle Semple Token (eircle) $amdleVo.lume findicateifo&e[ X'iltg!:ed (circleJ FreservativgAdded (cilcle) thlid as soecified helow) VOCs Y([3x40ml Y. fN\ ,Hc[, Y N], Nutrients Y /is l0[)ml YOO H,Sgn Y- (N HdrwMetals rnN 250rtil rY\ N E$o. fY) I Alt Other Non- Radioloeics v(s)25Otrrl Ye)No Praservative Addcd GmssAlpha Y (NI 1.000 ml Y 1N}H"SO. - Y rNl Other (specifY)Y(9 Samplevolune Y0l ffa prescrvative is useq SpecifyTYpe and Quatrtity of Pressrvative: I I I I I I I I I I t I I ll lr lr lr lr lr DeprhtowarerreforePurgi"e-]8-bl*casingVolum",rrf,#itt--,!:;ll' Well \ilater TemP, (avg)-Redox Potential (B'h)-TurbiditY -Weather Cond.-1^nn a-- Ext'l Anb' Temp'(prior to sampling even tl*'9'"- RedoxPotentialfgh) )[)J- turtiAitY ' O3 (l Date: 2.25.07 Revision: 2 Page40of'41 Milt - Groundwater Discharge Penait Grouudwabr Monitoringqrr,r;;ncePtaniQeP) .Srf{ AmACHMEI{T1 wnffiU NNESA IJRAhIIUM MXLN, F'[E[.D DATA WORKSffi ET SOR DescriPtion of SamPling Sampler Location (well name) - l'il,qJ 2,( ' Name andinitials DateandTime forPurgingi-( -o8., andsampling(if differcnt),ur$ - lVelt Purging Equip Use& ppump or -bailer Well Pump (if other ttran BenneDll-ED- sampting Even@ prev. well sampled in Sampling EventS!&l pHBuffer 7-o 7 'O . pHBuffer4'O' 'tl'D ' SpecificConductance--i13f-uMlloVcm Well Depttr lll'ja ' conduchnce aLt{8 - Redox Lji I l! l' I I I I I I t I I I I I I I I I Mill - Groundwatar Discbarge Pereit Grouodwarer Monitortrg Quality Assurauce Plas (QAP) Tu$iditY Date: 11.17.06 Revisioru I Page4l ot4l Voluneof WaterPurged Pumping RAIB CaIcUlAtiPn FlowRase(Q)' inpm.Tims to evacuate two casing volumes (2V) T=2VlQ= Number of casing volumes evacuated (if other than two)-- If well evacuated to dr5nress, numberof gallonsevacuaEd - ^t/4 - Name of &rrified Analytical l-aboratory if Other Than Energy Labs ,r.) /A rc-eggl@ saqpJe TokeB (cifclel SriuiileYqlq-nS (Indlmte lf oller Eiltered (circle)roggIsl$se4Ceg(cirde) lhiii aa specifred lrelorr) rY) N 3x4O ml Y. A{) ,rrr.r. fifl N YOL:S Nurienrs YAD l0OEl YTN Hdlrr I- s s;awldstals ,fl lN 250inl Y]N ffio,-- ft, N ffi-- ottcr Non- Radiolosics Yeg 250mI Y(D ffiTreserva$ve rtdded GrossAlpha YTN 1-m0ml Y(I H#o- Y (Nl Other (sPccifY)Yg,Samplivolume Yg) If apreservative is useA SpecifyTYPe and QtantitY of PreserYative: I T I I t I I I I I I I ( Date: 2.25 -07 Revision: 2 Page rl0 of4l Mill - Groundwater Discharge Pen'nit Groundwater Monitoring QualitY.AssnrancePlan(Qff) ;rf arhacmnnmt r WI{ITE MF^SA IIRAM{'M IIdII,L E'XE[&DA DescriPion of SamPlittg tocation (wettnww) /llN 60.iffi*, initiars {an,ua ll { .tl,v' !*/,*ea' Dateanrtrime tupxgtng -1j/ g f 0{ andSampling(ifdifferent). - well Pump (if ottrerthan Beme[*&JA- PrEv. lVell Sampled in Sampling Eve *-4,,& pHBuffer 7.Q 7-O plurfiera.a- '?' D , Specific Conductanee-947--uMftoStcm WellDepth' 4 / /] Deprh to Water Beforehxgins-1N1li{- Casing Volume Cv}+ *Y:tt- - .lfilT) Conduc&ince(avg) .. - PllofWdter 3,, 1y"11,_., =_ (.367h) WellWaterTemp.(avg)--,- - RedoxPoientiat(Eh)-I-Frbidity Wearher Con a- drJ {, < 4\ t '+{ tqExt'l Anrb' Temp'(prior to sampting Event)--:-- Conductauce 6ti'c1 - P temperarure )f1.3-B - Redox Potentiar (Eh)--3i5-- Well Purging Equip Used: -pump or -bailer sarrpling Even LYbIYLL.S-Q I I I I I I I t:;Redox Potential (Eh) I I I I I I I I I I ir lr l: lr l: l: Mlt-Grouudn'aterDischargePermit Date: lL'l'1'06 Revision:'l GroundwatecMotritoriag t'| ,'., QualityAssurancePlan(QAP) |Page4l of4l VolumeofWaterPnrgedWhenFieldParametersarBMeasurcd ft/ A' Bumping Raf e Calculation Flow Rate (Q)' in gpm'Time to evacuate hlro casing volumes (2V] 5/60 == Nl*T =2YlQ= Number of casing volumes evacuated (if other than two)' Ifwellevaouabdtodrynesquumberofgallonsevacuatcd " '---' ' Name of certified Analytical Laboratoty if other Than Etrergy Labs - - D,f. E[^^I< SriinfleVolqm,g (lndlcate if othe!:'t&ailas specitred helorr) Eiltered (cirgte) Preiervative Adilerl (clrcle)gne-sgErgde Saimple Tpkeq (circle) VOCs MN 3x4Oml Y fiS/HCT. Wl,__N NrtEieots Ydp l0OEl YN H,SOr YN r,L^.-r trlfa]ala WN 2s0frl v)N HNOa (J/ rr YS 250mI YN fr-iiveAddcdAlt Othgr Non- Radioloeics , ,-ft)N H,SO. cFtNGrossAtPhr&N 1-(m ml Other(sPeci$)YoP Samplevolums YN Baprescrvative is u$c4 SpecBTYPe and QuantrtY of heservative: I I I I I I I I {" Dale: 2.25.07 Revision: 2 Page 40 of4l Mill - Gmunrtwater Discharge Permit Grourdwater Monitoring ;'r"il;;;.*ePtaniQnP) }Cf { NITAaEI4ENT I WEffiTE MES,{ I'RAMUM MTL[, I I I I I t I I I I S'XET,D DATA WOru$HEET FOR DescriPtion of SamPling Location(wellname) 4lN 65 Nameandinitials{'^^" H"lti,L.."A r rB Date andTime forPurging ct:t -o8 and Sagnlins (if different)'uli Well purging Equip Use& ,Lpump or -bailer Ttrell Pump (if otler t6an Bennet)-Il'-ED-- Sampling Event S.nlrra!,. (-^."AO,l.r Prev. Well Sampled in Sampting Event-14!9-eA pilBtfietl.$ - ,i7, 'O pH Butrer4'O ' 't-l 'D ' Specific Conductance--lt9l-uMHoS/cm Wetl Depth rt2 ,1 Depth toWaterBeforePurgi ng 7L,t3, Casingvolume t"lf ,Hi|';ffi,:[|ll' conducuince(avg)- pHofwriter(Lv$)' -WellWaterTemp.(avg)-,RedoxPotential(Eh)---Iurbidity- Weather Cond.. 14 o s Ll + 5*'^* n:cf I Amb' Temp'(prior to sampling evenO-2}"<- trrbidity . .ij'.q - It r*J1a'Q-Gal'Purged t^- 6' Conductasce, .3q76 - I temp"rature lLl'53 - Redox Potential (EtD--lq i-- fi*t- Gal' Purged- tj:; I D.npl i."t o.f /4\"J 3A I I l: I T I I I I rl lr lr lr lr lr lr VolumeofWaterPurgeu V,m*f'**@ 34'6 -' FlowRale(Q), ingPm' -335/60= = Number of casing volumes evacuated (if other than If well ovacuated to drlmess, number of gallon's evacuatel- l.t lA Name of cerrified Analyrical laboratory if other Than goergy Labs---Arja MIl-Giourdwata'DischargePermit Date: LL'fi 'aG Revision: I't-unuwaterlulonimring ''" ; ' QuaIitY Assurauce Ptan (QAP)Page4t, of4l Tims t0 evasuate two caei4gvolu[Es (2V) T=2VIQ= t20 Aln, grucsf$ssds Samnle Taken (circle) SimdleVolumq (tndicateif otBor thriirf aesnectfretl t otnol Filtered (circle) h,'esprvatiYeAdaled (ciTile) Y)N 3x40ml Y Hct,- (Y, N NuhiEtrts YrFh lllll ml Y. d.rl rt,So" Y^Gl a) N HiE, € ) N, No Preservativo AddedffiwMetatsY'\ .]ff 25Oiml ^nlt Otter Non- Radiolosics Y0 250 nnl vc, ?)N ffi If a preservative is ue4 Speci$TYPeand Qratrtity of Preservative: C'rugsAIPhr ft)N 1.000 tllt Otner tsPccitYl Ye,}Sampldvolume Y(}) FNEBGY LABORATORIES, lNC, . 2393 Sat CreekErvEfrqrLAHUftAtuutEn-,tNC..2393SatCreekHlgfway(9260u.p.o.9ox$259, caspe4,wyg2602Tott Free 888.235.05t5 . s04' '05t5 . Fax 307.zl4.toii ;'ciiiii6eiiri:ylali.i"-=; www.iiiibiiao.iiii-q ,wwwenergylab.con August 01, 2008 Denison Mines (USA) Corp 6425 S Hwy 191 Blanding, UT 84511 Workorder No.: C08070597 Project Name: July Groundwater ANALYTICAL SUMMARY REPORT Quote lD: c1640 - pOC Wells / Monthly Groundwater sampling Energy Laboratories, lnc. received the following 6 samples from Denison Mines (usA) corp on 7l11t2oa8for analysis. Sample lD Client Sample lD Collect Oate Receive Date Matrix c08070597-001 MW 14 07rc9108 09:16 07/11/08 Aqueous Metals by lcp/lcpMs, Dissolved c08070597-002 MW 26 07/09/08 1 A:46 07 I 1 1 t08 Aqueous Metals by ICP/ICPMS, Dissolved SW8260B VOCs, Standard List Aqueous Metals by ICP/ICPMS, Dissolved Gross Alpha minus Rn22Z and Uranium c08070597-003 MW 32 07/09/08 1 1 :33 0711 1/08 I I I t I I t I I I I I I I I c08070597-004 MW60 07/09/08 1 1 :53 07/1 1/08 Aqueous Metals by ICP/ICPMS, Dissolved Gross Alpha minus Rn222 and Uranium SW8260B VOCs, Standard List c08070597-005 MW65 07/09/08 1 1 :53 O7 I 1 1 tOB Aqueous Metals by ICP/ICPMS, Dissolved Gross Alpha rninus Rn222 and Uranium C08070597-006 Trip Btank 07 109108 1 1 :53 07 t1 1 t1B Aqueous SW8260B VOCs, Standard List As appropriate, any exceptions or problems with the analyses are noted in the Laboratory Analytical Report, theQA/QC Summary Report, or the Case Narrative. lf you have any questions regarding these tests results, please call. ReportApprou"Orrr@ STEVE CARISIOI1I I I I I ENEfrGf LABORATORIES, lNC, ' 2393 Satt Creek Hlg-Qway (52601) . PO, Box alia , Caspec Wy A2602, Totl Free 888.235.05t5 . 307.i ,515 . Fax J1z.fia. t63i ;-cispiirdeidrgyti.i--- *rfr;;;;;;iirb.;;;' Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT /Denison Mines (USA) Corp / July Groundwater , /co807ose7-001 u MW 14 Report Date: 07/31/08 Collectlon Date: 07109/08 09:16 DateReceived: 07111108 Matrix: Aqueous Result Units Qualifiers RL MCU QCL Method Analysis Date I By I T I I t I I I T t I I I I I I I I I METALS. DISSOLVED Manganese Uranium 10 0.3 2150 ug/L 64.8 ug4. E200.8 E200.8 01126108 06:07 / smt 07nilAA 06:07/ sml Report Deflnitions: RL. Analyte reporting timit. QCL - Quality conlrol timit. MDC - Minimum deteclable conc€ntration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. I €NEfrGY LAAOfrATORTE_S, INC ' 2393 Satt Creek H/g-Qway (82601) . P.O, *ox i.Zir . Caspec Wy AZ6azTott Free 888.235.0515 , s07.i 0515 . Fax 302.234. /63e .b)sieitienere4.q--- **iiiiiilyiio.iiii-t I I LABORATORY ANALYTICAL REPORT Client; Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp July Groundwater c08070597-002 MW 26 Report Date: Colleetion Date: DateReceived: Matrix: 07131t08 07/09/08 10:46 07111108 Aqueous I Analyses Result Units Qualifiers RL MCU QCL Method Analysis Date / By ug/L ug/LI I I I t I I t I I I METALS. DISSOLVED Manganese Uranium VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Tolueno Xylenes, Total Sun: 1.2-Dichlorobenzene-d4 Surr: Dibromofluorome8rane Surr: p-Bromofl uorobenzene Surr: Toluene.d8 - One internal standard is outside method paramelers. E200.8 E200.8 sw8260B SW826OB sw8260B sw8260B SW826OB SW826OB sw8260B sw8260B sw8260B SW826OB sw8260B sw82608 sw8260B sw8260B This analysis has been contirmed through lhe analysis of an alternate sample vial. 1't10 23.4 ND ug/LND uglL ND us/L 1600 ug/L ND ugll ND uE/L 82 ug/LND ug/L ND ug/L ND ug/L 111 %REC116 %REC91.0 %RECs2.0 %REC 10 0.3 20 1.0 1.0 100 1.0 20 1.0 1.0 1.0 1.0 80-120 70-130 80-120 80-120 07126108 06:26 / sml 071?6108 06:26 / sml 07l15loB 19:541jlr 0711510819:54 / jlr 07/15/08 19:54 /jlr 0711510818:43 / jlr 07115108 19:54 / jlr A7nSl0819:54 / jlr 07/15/08 19:54 /jh A7n5n819:54 / jlr 07fi5fi819:541jlr 0711510819:54 / jlr 07/15/08 19:54tjtr 07/15/08 19;54ljlr 071',|510819:54 I jlr 0711510819:54 / jlr I t I Report Definitions: RL - Analyta reporting limit. QCL - Quality control limit. MDC - Minimum deteotable concentration MCL - Maximum contaminant tevel. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference. I ENERGY LABoEAToBlEs,.lNC. ' 2J93 salt creek HEhway (ae60t) , po. Box sziSTottFree888.23i.05ts ' slz.i' ' 15ts . rax eoz.isq.tl1i :"iipii6tiirsyE:;.'"i--'' Caspet; WY82602 wwur.energylab.comt I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp July Groundwater c08070597-003 MW 32 Report Date: 07/31108 Collection Date: 07109/08 11:33 DateReceivedl. Q7l1llQB Matrlx: Aqueous I Analyses Result Units Qualiflers RL MCU QCL Method Analysis Date / By 0.5 30 10 20 ugll uglL ug/L uSlL poilL pCi/L pCilL I I t t I I t t I t I METALS. DISSOLVED Cadmium lron Manganose Nickel RADIONUCLTDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC 2.4 9980 5610 65 3.5 o.7 0.4 E200.8 E200.7 E200.7 E2AA.7 E900.1 E900.1 E900.1 lTEOlAg 06:33 I sml 071211A815:361cp O7l21rc815:36 / cp 0712110815:36 / cp A7n7n8 09:34 / cnv ATl27l08 09:34 / crw 0712710809:34 lcrw I I I Report Definitions: RL - Analyte reporiing limit. QCL - Quality conkot timit. MDC - Minimum detectable concentralion MCL - Maximum contaminant level. ND - Not detected at the reporting timit. T ENEBGY LABOBATORIES, lNC. ' 2393 Saft Creek Highway (82601) ' P.O. Box 3258 ' Caspei WY 82602 Toll Free 888.235.0515 . 3071 ',0515 , Fax 302234.1639 . casper@energylab.q , wvwenergylab.comI I t LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp July Groundwater c08070597-004 MW60 ,/ Report Date: 07/31/08 Collection Date: 07/09/08 11:53 DateReceived : 07 11 1108 Matrix: Aqueous t Analyses Result Units Qualifiers RL MCUOCL Method Analysis Date / By I I I I I I I I I I I METALS. DISSOLVED Cadmium lron Manganese Nickel Uranium RADIONUCLIDES - DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Pr€cision (t) Gross Atpha minus Rn & U MDC VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyt ethyl ketone Methytene chlodde Naphthalene Toluene Xylenes, Total Surn 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p.Bromofl uorobenzene Surr: Toluene-d8 ND ND ND ND ND uglL ug/L ug/L uglL ug/L ND ugll ND ugll ND ug/L 2.1 ug/L ND uglL ND uglL ND ug/L ND uglLND ug/L ND udl 110 %REC 108 70REC 94.0 %REC 90.0 %REC 0.5 30 10 20 0.3 E200.8 E200.7 E200.8 E200.8 E200,8 E900.1 E900. t E900.1 sw82608 sw8260B SW826OB sw82608 SW82608 sw82608 SW8260B SWEz60B SW826OB sw8260B sw8260B sw8260B sw8260B sw8260B O7l29lOB 20:04 / ts 0712110815:40 / cp A7Egl08 20:04 1 ts A7Dgl08 20:04 / ts ATEglOE 20:04 I ts A7E7l08 09:34 / crw O7l27l$g 09:34 / cnrv 07l27l1g 09:34 / crw 07/15/08 18:08 /jlr A7fiilaB 18:08 /llr 07/15/08 18:08 /jlr 07115108 18:08 / jlr 07/'l 5/08 18:08 / jk a7t1snB 18:08 / jlr 07fi5fi8 18:08 / jlr 07/1 5/08 18:08 /jlr 07/1 5/08 1 8:08 /jlr 0711510818:08 / jlr 07/1 5/08 1 8:08 / jk 0711inB 18:08 / jlr 0711510818:08 / jlr 07115/06 1E:08/jlr 0.9 pcilL 0.4 pCi/L o.4 pCi/L 2A 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-1 30 80-1 20 80-120 I I T Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND . Not detected at the reporting limit. I ENEBGY LABOBATORIES, lNC. ' 2393 Salt Creek Hiqhway (82601) . PO. Box 3258 . Caspei WY 82602 Toll Free 888.235.0515 , 307i:':'0515 . Fax 307,234.1639 .'cisper@energytao.4 , wnueherbytab.conI I t LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mlnes (USA) Corp July Groundwater c08070597.005 MW65 Report Date: 07i31/08 Collection Date: 07/09/08 11:53 DateReceived: A7h1l08 Matrix: Aqueous I Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date I By I I t I I I I I I I I METALS - DISSOLVED Cadmium lron Manganese Nickel RADIONUCLIDES - DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) G,oss Alpha minus Rn & U MDC 2.4 9S90 5600 74 3.7 o.7 0.4 0.5 30 10 20 uglL ug/L ug/L ug/L pCi/L pCiiL p0rlL E200.8 E200.7 E200.7 E200.8 E900.1 E900.1 E900.1 07126108 06:46 / sml 07121108 15i44 I cp 07n1lOB 11-M I cp 07n6lAg 06:46 / sml 07D7lAB 09:34 /crw Oln7n$ 0g:34 / crw Oll2TlOA 09:34 / crw I I I Report Definitions: RL - Analyte reporting limit. QCL - Quality confol lirnlt. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. T ENERGY LASORATOBIEi INC ' 2393 Salt Creek Htghway (8260/) . P.O. 1ox 32.58 . Caspec WY 82602 Toll Free 888.235.0515 , 307.{ '!5/5 , Fax 507.234.1639 , casper@enxgylab.c( www:ehergylab.comI I I Client: Project: Lab lD: Client Sample ID: LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp July Groundwater c08070597-006 Trip Blank Report Date: 07/31/08 collection Date: 07109/08 11:53 DateReceived: A7fi1108 Matrix: Aqueous I Analyses Result UniG Qualifiers RL MGUACL Method Analysis Date I By ND ND ND ND ND ND ND ND ND ND 112 108 92.0 92.0 I I I t t I I I I t I VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachlodde Chloroform Chloromethane Methyl ehyl ketone Methylene ohloride Naphthalene Toluene Xylenes, Tohl Surr: 1,2-Dichlorobenzen+d4 Surr: Dibromofluoromethane Surr: pBromofluorobenzene Surr ToluenedS udL ug/L ug/L uglL ug/L ug/L ug/L uS/L ug/L ug/L %REC %REC o/oREC %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70.130 80-1 20 80-120 SW826OB SW8260B sw82608 SW82608 SW826OB sw8260B sw8260B SW8260B sw8260B sw8260B sw82608 sw82608 SW8260B sw8260B Alh4lA$13:58 / jlr 07t14108 13:58 / jlr o7n4l0,813:58 / jlr 0711410813:58 I Jlr A7n410813:58 / jlr Atl14l1813:58 / jlr 47n4n813:58 / jlr 0711410813:58 / jlr 07fi41A813:58 / jlr 0711410813:58 / jlr 0711410813:58 / ik 07114t0813:58 / jlr 0711410813:58 /JIr 07114108'13;58 / jlr I I I Report RL - Analyte reporting limit.Definitions: eCL - euality control limit. MDC - Minimum detectable concentration MCL. Maximum contaminant level. ND - Not detected at the reporting limit. t ENEfrGY UTBOaATORIE& lNC. ' 2393 Salt Creek Highway (82601) ' PO. Box 3258 ' Casper; WY 82602 Toll Free 888.235.05/5 ' 304 ' 0515 ' Fax 307.234.1639 ' casper@energytab.l ' www.energylab.mn I I QA/QC Summary Report Clienh Denison Mines (USA) CorP Projec* July Groundwater Report Date: 07/31/08 Work Order: C08070597 mglL mglL mS/L I I I t I I I Analyte Result Units RL %REC Low Limlt Hlgh Limlt RPD RPDLimlt Qual Method: E200.7 Sample lD: MB-080721A lron Manganese Nickel Sample lD: LFB-0807214 lron Manganese Nickel lron Manganese Nickel Sample lD: C08070238-001DMSDZ lron Manganese Nickel Sample lDl c08070238.001DMs2 Sample Matrlx Spike Method Btank ND ND ND Laboratory Fortified Blank 1.07 mS/L 1.02 mgiL 1.00 mg/L 1.1 mg/L 1.0 mg/L 1.0 mg/L Sample Mahix Spike Duplicate 1.1 mg/L 1.0 mg/L 1.0 mg/L Run: |CP2-C_080721A Run: |CP2-C_080721A 85 125 85 125 85 125 Run: ICP2-C_080721A 110 70 130 103 70 130 103 70 130 Run: |CP2-C 080721A Batch: R'104583 07/21108 13:46 0712'1108 13t51 07121108 15:52 0Tt21to8 15'57 20 20 2A 0.005 0.0003 0.004 0.030 0.010 0.050 0.030 0.010 0.050 0.030 0.0'10 0.050 107 102 100 106 70 102 70101 70 130 130 130 3.2 1.3 1.3 I t I I I I I Method: E200.8 Sample ID: LRB Cadmium Manganese Nickel Uranium Sample lD: LFB Cadmium Manganese Nickel Uranium Sample lD: C08070597-001AMS4 Cadmium Manganese Nickel Uranium Sample lD: C08070597-001AMSD4 Cadmium Manganese Nickel Uranium Run: ICPMS4-C 080725A Run: |CPMS44_080725ALaboratory Fortified Blank 0.0510 mglL 0.0516 mg/L 0.0514 mglL 0.0473 mg/L Post Digestion Spike 0.0476 mglL 2.21 mglL 0.4622 rng/L 0.116 mS/L Post Digestion Spjke Duplicate 0.0482 mg/L 2.2O mg/L 0.0623 mg/L 0.117 mgll Method Blank ND ND ND ND 3E-06 6E-06 3E-05 2E-06 0.0010 0.0010 0.0010 0.00030 0.010 0.010 0.050 0.00030 0.010 0.0r0 0.050 0.00030 Batch: R104869 All25l08 17:21 07125108 17:28 0726/08 06;13 07126108 O6t2O 20 20A ?0 20 mSlL mg/L mg/L mg/L toz 85 to3 85t03 8595 85 115 115 '115 'I 15 Run: ICPMS4€_080725A 93 70 13070 130 96 70 101 70 96 70 103 70 Run: ICPM$4-C_08O725A 95 70 r30 70 130 130 130 130 130 1.3 0.1 0.2 0.9 I I RL - Analyte reporting limit. ND - Not detected at the reporting limit. A - The analyte level was greater than four times the spike level. ln accordance with the method % recovery is not calculated. I ENEBGY LAEORATOBIES, lNC. ' 2393 Sall Creek HrjThway (82601) , P.O. Box 3258 . Casper Wf 82602 Toll Free 888.235.0515 , 307.1 515 . Fax 307,234.1639 , chsper@energylab.cq ' wvweitergytab.comI I QA/QC Summary Report Client; Denison Mines (USA) Corp Projec8 July Groundwater Report Date: 07/31/08 Work Order: C08070597 t I I I I I I t Result Units RL %REC Low Limit High Limit RPD RPDLimit QuaI Method: E200.8 Sample lD: LRB Cadmium Manganese Nickel Uranium Sample lD: LFB Cadmium Manganesa Nickel Uranium Sample lD: C08070597-004AMS4 Cadmium Manganese Nickel Uranium Sample lD: C08070597-004AMSD4 Cadmium Manganese Nickel Uranium Method Blank ND ND ND ND mgll mg/L mg/L mg/L Laboratory Fortified Blank 0.0498 mg/L 0.0486 mg/L 0.0495 mg/L 0.04E9 mgll Post Digestion Spike 0.050S mgll 0.0528 mg/L 0.0495 mglL 0.0534 mg/L Post Digestion Spike Duplicate 0.0504 mg/L 0.0502 mgll 0.0487 mg/L 0.0508 mg/L Run: ICPMS2-C_080729A Run: ICPMS2-C_080729A 85 115 85 115 85 115 85 115 Run: ICPMS2-C_080729A 1E-05 5E-05 0.0007 1E-05 0.0010 100 0.0010 97 0.0010 99 0.00030 98 0.010 0.010 0.050 0.00030 0.010 0.010 0.050 0.00030 102 70 101 70 97 70 107 70 101 70 96 70 96 70 102 70 Run: ICPMS2-C_080729A Batch: R105057 07lzgl08 12144 07129108 12i51 l7ngAg 20111 07/29/08 20:18 20 20 20 ,^ 130 130 130 130 130 130 130 130 1.0 4.9 0.0 5.0 101 I I I I I I Method: E900.1 Sample lD: M&GA.0147 Gross Alpha minus Rn & U Sample lD: LCS-GA{147 Gross Alpha minus Rn & U Sample lD: C08070511-001DMS Gtoss Alpha minus Rn & U Sample lD: C08070511-001OMSD Gross Alpha minus Rn & U Method Blank 0.6 pCi/L Laboratory Control Sample 27.Ap0ilL Sample Matrix Spike 30.4pcUL Sample Makix Spike Duplicate 29.8pCi/L Run: G5000W_080723A Run: G5000W_080723A70 130 Run: G5000W_080723A 70 130 Run: G5000W_080723A 70 130 ,l03 Batch: GA-0147 o7127t08 a633 07/2708 06i33 07127108 06:33 0712708 06:33 22.2), I I RL - Analyte reporting limit.ND - Not detected at the reporting limit. I ENERGY LABORATORIES, lNC. ' 2393 Salt Creek Highway (82601) ' P.O. Box 32.58 ' Caspe4, WY82602 Tolt Free 888.235.0515 ' 307[ : 0515 ' Fax 307.234.1639 ' casper@energylab.( ' wtwr'energylab.com I I I I I I I I I I I I I I I I QA/QC Summary Report Client Denison Mines (USA) CorP Project July Groundwater Report Date: 07/31/08 Work Order: C08070597 Methodr SW8260B Sample lD: 14Jul-08-LCS_3 BBnzene Carbon tehachloride Chloroform Chloromethane m+p.Xylenes Methylene chloride Naphthalene o.Xylene Toluene Xylenes, Total Surr 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: Toluen+dB Sample lD: 14Ju!-08_MBLK_6 Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene ToluBnB Xylenes, Total Surr: 1,2-Dichlorobenzened4 Surr: Dibromofl uoromethane Sur: p-Bromofl uorobenzene Sun: Toluene.dS Sample lD: C08070597-004CMS Benzene Carbon tetrachlorlde Chloroform m+p-Xylenes o-Xylene Toluene Xylenes, Total Surc 1,2-Dichlorobenzene.d4 Surr: Oibromofluoromethane Surr: p-Bromofluorobenzene Surr: Toluene{8 Laboratory Control Sample 9.8 ug/L 11 uglL 10 ug/L 9.5 uglL 19 uglL 9.5 uglL 9.5 ug/L 10 ug/L 11 ug/L 29 ugll Method Blank ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L NO ug/L ND ug/L ND ug/L ND ug/L ND ug/L Sample Matrix Spike190 ug/L250 ug/L 240 ug/L380 ug/L 20O ug/L 21O ug/L 580 ug/L Run: 5975VOC1-080714A 70 70 70 70 70 70 70 70 70 70 80 70 80 80 Run: 5975VOC1-0807144 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1,0 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 130 130 130 130 130 130 130 130 't30 130 120 130 130 120 98 106 r03 95 93 95 95 100 106 96 100 98 102 101 112 80 106 70 92 80 90 80 Run: 5975VOC1_080714A 07/14108 10:10 OZI'l4lOB 11:56 0711410823:23 10 10 10 10 10 10 10 1.0 1.0 1.0 1.0 95 126 116 94 101 105 97 98 118 107 104 7A 70 70 70 70 70 70 80 70 80 80 120 130 120 120 130 130 130 130 130 130 130 120 130 120 1zo Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Batch: R104206 I I RL - Analyte ,epofting limit.ND - Not detected at the reporting limit. ENEfrGY LAAORATO4ES, lNC. ' 2393 Salt Creek Hbhway (82601) ' P.A aox 3258 ' Caspet WY 82602 Toll Free 888.235.0515 ' 307.! 2515 ' Fax 307,234./6eg ' casper@energylab.q www:energylab'com QA/QC Summary Report Client Denison Mines (USA) CorP Projec* July Groundwater Report Date: 07/3'l/08 Work Order: C08070597 Method: SW8260B Sample lD: C08070597-004CMSD Benzene Carbon tetrachlotide Chloroform m+p-Xylenes o-Xylene Toluene Xylenes, Total Surr 1.Z-Dichlorobenzene-d4 Surn Dibromofluoromethane Surr: p-Bromofluorobenzene Surr Toluened8 Sample Matrix Spike Duplicate 200 ug/L 240 udl 240 uS/L400 ug/L21A ug/L220 ug/L 6'10 uS/L Run:5975VOC1 0807144 10 10 10 10 10 10 10 1.0 1.0 1.0 1.0 130 130 130 130 .t30 130 130 120 130 120 120 4.5 4.9 2.0 5.0 3.5 5.9 4.5 0.0 0.0 0.0 0.0 100 7a'120 7a 114 70 99 7A104 7A't11 70 101 7A99 80 110 70 't04 80 102 80 07114108 23i59 20 20 20 20 20 20 20 10 10 10 10 Result Unlts RL %REC Low Limit High Limit RPD RPDLimit Qual Baich: R104206 Qualifiers: RL - Analyte ,eporting lirnit.ND - Not detecled at the reporting limit. ENEfiGY LABOHATORIES, lNC. . 2393 Saft Creek Hphway (8260U , PO. Box 3258 , Caspet; W 82602 TollFreaffi8.235.05l5 . 307.235.0515 , Fax 307.234.1639 ' caspr@energylab.com.wwwenergylab.mm August 01, 2008 Denison Mines (USA) Corp 6425 S Hwy 191 Blanding, UT 84511 Workorder No.: C08070597 Project Name: July Groundwater ANALYTICAL SUMMARY REPORT Quote lD: C1640 - POC Wells / Monthly Groundwater Sampling Energy Laboratories, lnc. received the following 6 samples from Denison Mines (USA) Corp on 711112008 for analysis. Sample lD ClientSample ID Collect Date Recelve Date Matrix Test c08070597-001 MW 14 07/09/08 09:16 07/1 1/08 Aqueous Metals by ICP/ICPMS, Dissolved c08070597-002 MW26 07/09/0E 10:46 07 I 1 1 108 Aqueous Metals by ICP/ICPMS, Dissolved S\ /82608 VOCs, Standard List c08070597-003 MW 32 07/09/08 1 1 :33 07/1 1/08 Aqueous Metals by ICP/ICPMS, Dissolved Gross Alpha minus Rn222 and Uranium c08070597-004 MW60 07/09/08 1 1 :53 07 11 1 108 Aqueous Metals by ICP/ICPMS, Dissolved Gross Alpha minus Rn222 and Uranium S\ /82608 VOCs, Standard List c08070597-005 MW65 07/09/08 1 1 :53 O7 l1 1 108 Aqueous Metals by rcPACPMS, Dissolved Gross Alpha minus Rn222 and Uranium C08070597-006 Trip Blank 07/09/08 1 1 :53 07/1 1/08 Aqueous Sl A2608 VOCs, Standard List As appropriate, any exceptions or problems with the analyses are noted in the Laboratory Analytical Report, the QA/QC Summary Report, orthe Case Narrative. lf you have any questions regarding these tests results, please call. ReportApprov "Orrr@SXEVECARISTON ENERGY LABORATORIES, lNC. ' 2393 Salt Creek Hlglway (52601) . P.O. Box 3258 . Caspet W 52602Toll Free 888.235.0515 . a0zzg5.05t5 . Fax a1r.zg4. t639 .'cisperaieneriyao.con , www.ehergyao.mi . Cllent: Project: Lab lD: Client S.ample ID: LABORATORY ANALYTIGAL REPORT Denison Mines (USA) Corp July Groundwater c08070597-001 MW 14 Report Date: 07/31/08 Collectlon Date: 07/09/08 09:16 DateRecelvad: O7 I 1 1 108 Matrix: Aqueous Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date / By METALS. DISSOLVED Manganese Uranium 2150 &1.8 10 0.3 ug/L udL E200.8 E200.8 01126108 06:07 / smt 07126108 06:07 / sml Report Doflnltlon3: RL -Analyte reporting timtt. QCL - Quality contol limit. MDC - Minimum detectable concentation MCL - Maximum contamlnant level. ND - Not detected at the reporting limit. ENEBGY LABOnAfOilES! l4l9: ' 239! Salt Creek H@hway (82601) , PO. Box 3258 . Casper WY 82602 Toll Free 888.235.0515 . 307.?35.0515 , Fax 307.234,1639 . casper@energytab.mm . www,ehergytab.com Cllent: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp July Groundwater c08070597-002 MW 26 Report Date: 07/31/08 Collectlon Date: 07/09/08 10:46 DateRecelved: 07 I 1 I 108 Matrir: Aqueous Analyses Result Units Qualifiers RL MCU QCL Method tuialysir Date / By METALS. DISSOLVED Manganese Uranium VOLATILE ORGANIC COMPOUNDS Acetona Benzene Carbon tetrachloride Chloroform Chloromeihane Mehy' ethy' ketone Methylene chloride Naphhalen€ Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene-d4 Sun: Dibromofluorometrane Sun: pBrcmofl uorobenzene Sun: Toluened8 1.0 sw8260B1.0 sw8260BD 100 sw8260B1.0 sw8260B20 sw8260B1.0 sw8260B1.0 sw8260B1.0 sw8260B't.0 sw8260B8G120 SW8260B7G130 SW8260B80-120 SW8260B8G,120 SW8260B 1 110 23.4 E200.8 E200.8 SWE2608 07126108 06:26 / sml A7/2fj/08 06:26/sml 07n5n819:54 / jlr 07/15/08 19:54ljtr 07/15/08 19:54 / jlr 0711510818:43 / jlr 07/15/08 19:54 /jlr 07/15/08 19:54 /jlr 0711510819:54 / jlr 0711510819:54 / jlr 07/15/08 19:54 /jlr OTnSnB19:54 / jlr 07/1 5/08 19:54 / jlr 0711s10819:54 / jlr 07115n819:54 / jlr 07/15/08 19:54 /jlr ND uS/LND ug/LND ugrA 1600 ug/LND ug/LND ug/L82 ugAND uS/LND udLND uS/L111 %REC116 %REC91.0 %REC92.0 %REC ug/L ug/L 10 0.3 20 - One intemal standard is ou$ide mothod perameters, This anal!,sis has bean confinned through he anal)6is of an alteinatc samplo vial. Report Deflnltlons: RL - Analyb reporting limit. QCL - Quality confol limlt. MDC - Minimum detectable concenbation MCL - Maximum contaminant level. ND - Not deteGled at the reportng limit, D - RL increased due to sample matsix inte(erence. EilEBGyLABORATO4Ei tNC. - 2393 Salt Creek Hrghway (8260U 'PO. agx3258 ' Caspet WY82602 raiFiiina.ias.oiti ; so-z.ig5.osts , Fax 307.234.1639 '-caspr@energylab.com 'wmuenergylab.com Gllent: ProJect: Lab lD: Glient Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines (USA) CorP July Groundwater c08070597-003 MW 32 Report Date: 07/31/08 collectlon Date: 07/09/08 11:33 DateRecelved= 07 I 1 1 108 Matrlx: Aqueous Result Unlts Quallflers RL MCU QCL Method Analysis Date / By METALS. DISSOLVED Cadmium lron Manganese Nickel RADIONUCUDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precislon (*) Gross Alpha minus Rn & U MDC 0.5 30 10 20 2.4 udL 9980 ug/L s610 udL65 udL 3.5 pCi/L 0.7 pCi/L 0.4 pCi/L E200.8 E200.7 E200.7 E200.7 E900.1 E900-l E900.1 0726/08 06:33 / sml 0712110815:36 / cp 0712110815:36 I cp 0712.110815:36 / cp 07127lOB 09:34 / crw OTnTnB 09:34 / crw 0712710809:34 lctn Report RL - Analyte reporting limit. Definltions: eCL - Quallty control limit. MDC - Minimum detectable concentation MCL - Maximum contaminant levol. ND - Not detected at the reporflng limit. ENERGY LABOBATORIES, lNC. ' 2393 Salt Creek Highway (82601) ' PO. Box 3258 ' Caspet; W 82602 Toll Free ffi.235.0515 . 307.235.0515 ' Fax 307.234.1639 ' casper@energy'ab.um ' www:energylab.com Client: Project: Lab lD: Client Sample !D: LABORATORY ANALYTICAL REPORT Denison Mines (USA) Gorp July Groundwater c08070597-004 MW60 Report Date: 07/31/08 Gollection Date: 07/09/08 1 1:53 DateReceived: 07 11 1 108 Matrix Aqueous Analyses Result Unlts Qualifierc RL ircuQCL Method Analysls Date / By METALS. DISSOLVED Cadmium lron Manganese Nickel Uranium RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (*) Gross Alpha minus Rn & U MDC VOLATILE ORGANIC COMPOUNDS Acetono Benzene Carbon tetrachloride Chloroform Chlorornethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzened4 Surr: Dibromofluoromethane Surr: p-Bromofl uorobenzene Surr: Toluene{E ND ND ND ND ND 0.9 0.4 0.4 ug/L ug/L ug/L ug/L ug/L ND ug/L ND ug/L ND ug/L 2.1 ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L 110 %REC 108 %REC 94.0 o/oREC 90.0 ToREC sw82608 sw8260B SW826OB SW826OB sw8260B SW826OB SWE26OB SW8260B sw8260B SW8260B SW826OB sw8250B SW826OB sw8260B O7l29tOA 20:04 / ts 07n1rc8 15:40 / cp OTngng 20:04 /ts O7ngng 20:04 / ts O7ngnB 20:04 / ts 07P7108 09:34 / cnrr 07n7lAA 09:34 / cru 07D7108 09:34 / cnrv 07/15/08 18:08 /jlr 07115108 18:08 / jlr 07/15108 18:08 /jlr 07/15/08 18:08 /jlr 07/15/08 18:08 /jlr 07115t08 18:0E / jlr 07115108 1B:08 / jlr 07115108 18:08 / jlr 0711510818:08 / jlr 07/1 5/08 18:08 / jlr 07/15/08 18:08 /jlr 07t15t08'18:08 / jlr 0711510818:08 / jlr 07115108 18:08 / jlr pCi/L pCi/L pCi/L 0.5 30 10 20 0.3 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-130 80-120 E0-120 E200.8 E240.7 E200.8 E200.8 E200.8 E900.1 E900.1 E900_1 Report Eleflnltlons: RL - Analyta reporting limit. QCL - Quality control limit. MDC - Minimum detectabl€ concentration MCL - Maximum contaminant level. ND - Not detected at the reportlng limit. ENERGY LABORATOBIES! l4ld . 2393 Satt Creek Highway (826i0t) . P.O. Box 3ZS8 . Caspq Wlzilz Toll Free 8ffi.235.0515 ' 307.235.0515 ' Fax 307.234.1639 '-casper@energylab.com. wmueitergytab.com Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp July Groundwater c08070597-005 MW65 Report Date: 07/31/08 Collection Date: 07/09/08 11:53 DateReceive d: 07 11 1 108 Matrix: Aqueous Analyses Rosult Unlts Qualifiers RL MCU QCL Method Analysls Date / By METALS. DISSOLVED Cadmium lron Manganese Nickel RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (*) Gross Alpha minus Rn & U MOC 2.4 9990 5600 74 3.7 o.7 o.4 0.5 30 10 20 ug/L ug/L ug/L ug/L pCi/L pCi/L pCi/L E200.8 E200.7 E200.7 E200.8 E900.1 E900.1 E900.1 07f26DE 06:46 / sml 07n1nE 15'.44 lcp 07121108 15:44 I cp 07 n6l08 06:46 / gmt OTDT|OB 09:34 / crw O7n7nA 09:34 / cruv O7n7n8 09:34 / cnr Report RL - Analyte reporting limit.Definitions: eCL - euality control limit. MDC - Minimum detectable concentration MGL - Maximum contaminant level. ND - Not detected at the reponing timit EfiIERCY LABORATOBIE/ lNC. .2393 Salt Creek Highway (8260/) . PO. Box 3258 . Casper WY 82602 Toll Free 8ffi.235.0515 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com ' www.energylab.nm Client: ProJect: Lab lD: Cllent Sample ID: LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp July Groundwater c08070597-006 Trip Blank Report Date: 07/31/08 Collectlon Date: 07/09/08 11:53 DateReceive d: 07 I 1 1 108 Matrlr Aqueous Aralyoer Result Unitg Qualiflers RL MCUOGL Method tuialysis Date / By VOLATILE ORGANIG COMPOUNDS Acetons Benzene Carbon tetrachloride Chloroform Chloromethane Mehyl ehyl ketone Mehylene chloride Naphfialene Toluene Xylenes, Total Surn 1,2-Dichlorobemene-d4 Sun: Dibrcmofl uoromethane Sun: pBromofl uorobenzene Surn Toluened8 ND ug/LND udLND udLND udLND udLND udLND uS/LND ug/LND udLND udL112 %REC108 o/.REC 92.0 %REC92.0 %REC sw82608 sw82608 sw82608 sw8260B sw8260B sw8200B sw82608 SW8260B sw8260B sw8260B sw8260B sw8260B sw82608 sw8260B 07h4n813:58 /Jlr 0711410813:58 / jlr 07114108 '13:58 / jlr 0711410813:58 / jlr 0711410813:58 / jlr 0711410813:58 / jh 07114108 13:58 1jlr 07n4ng l3:58 / jlr 0711410813'.58ljtr 0711410813:58 / jlr 071'1410813:58 / jlr 07114108 13:58 / jlr A7n4n813:58 /Jlr 07114t0813:58 /Jlr 20 1.0 1.0 't.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-130 80-120 80-120 Report Definitions: RL - Analyte reporting limit. QCL - Quallty confol limit. MDC - Minimum detectable concenFation MCL - Maximum contaminant level. ND - Not detected at th6 reporling limit. ENERGY LABORATOqES, lNC. . 239s Satt Creek Highway (s2601) ' PO. Box 3258 ' CasPe| W 82602 Toll Freeggg.235.05l5 . 307.235.0515 . Fax 307.234.1639 ' casper@energylab.ffim'wm,tlenergylab.mm QA/QC Summary RePort Client Denison Mines (USA) CorP Projecfi JulYGroundwater Report Date: 07/31/08 Work Order: C08070597 Result Unlts Method Blank ND mg/L ND mg/L ND mg/L Laboratory Fortified Blank 1.07 mg/L 1.02 mg/L 1.00 mg/L Sample Matrix Spike 1.1 mg/L 1.0 mg/L 1.0 mgA Sample Matrix Spike DuPlicate 1.1 mg/L 1.0 nE/L 1.0 mg/L Run: ICP2-C_0807214 Run: |CP24_080721A 8s 125 85 125 85 1?5 Run: lCP2€-0807214 70 130 70 130 70 130 Run: lCP24-080721l. 106 70 130 102 70 130 101 70 130 Batch: R104583 07121108 13:46 07/21l08 13:51 07l21l08'1552 07l21lOB 15:57 20 20 20 RL %REC Low Llmlt Hlgh Limit RPD RPDLimit QualAnalytE Method: E200.7 Sample lD: MB-080721A lron Manganese Nickel Sample lD: LFB-080721A lron Manganese Nickel SamplelD: G08070238{l01DltS2 lron Manganes,e Nickel Sample lD: C08070238-{10{DMSD2 lron Manganese Nickel 0.005 0.0003 0.004 0.030 0.010 0.050 0.030 0.010 0.050 0.030 0.010 0.050 107 102 100 1'10 103 103 3.2 1.3 1.3 llethod: E200.8 Samplo lD: LRB Cadmium Manganese Nickel Uranium Sample lD: LFB Cadmium Manganese Nickel Uranium Sample lD: C08070597-,001Atuls4 Cadmium Manganese Nickel Uranium Sample lD: C0E070597-001AMSD4 Cadmium Manganese Nickel Uranium Method Blank ND mg/L ND mg/L ND mg/L ND mg/L Laboratory Fortified Blank 0.0510 mg/L 0.0516 mg/L 0.0514 mg/L 0.0473 nE/L Post Digestion Spike 0.0476 mg/L 2.21 mg/L 0,0622 mS/L 0.116 mg/L Post Digestion Spike Duplicate 0.0482 mg/L 2.20 mg/L 0.0623 mg/L 0.117 mg/L 3E-06 6E-06 3E-05 2E-06 0.0010 0.0010 0.0010 0.00030 0.010 0.010 0.050 0.00030 0.010 0.010 0.050 0.00030 Run: ICPMS4€_080725A Run: ICPMS,IC-080725A 102 8s 115 103 85 115 103 85 115 95 85 1',t5 Run: |CPMS44-0807254 93 70 130 Batch: R104869 07l25lOB 17:21 07D5tO8 17:28 07/26/08 06:13 A 0712610806:20 20 20A 20 20 70 96 70 101 70 96 70 103 70 Run: ICPMS4€_0807254 95 70 130 7A 130 130 130 130 130 130 1.3 0.1 0.2 0.9 Qualifiers: RL - Analyte reporting limit. ND - Not detecied at the reporting limit. A - The analyte level was groater than four times the spike lewl, ln accordance with the method % recovery is not calculated. ENE1GY LABOBATO4ES, lltC. '2393 Saft Creek Highway (52ilA'P'O. Bo.x 3258 ' Caspet W82602 riiFiiiaa.as.osti; so7ia5.05ti , Fax 307.234.1639 ' casper@energylab,oom'www.energvlab.om QA/QC Summary RePort Client: Project: Denison Mines (USA) CorP July Groundlvater Report Date: 07131/08 Work Order: C08070597 Result unlts RL %REC Low Limit Hlgh Limlt RPD RPDLimit Qual illethod: Sample lD: Cadmium Manganese Nickel Uranium E200.8 LRB Sample lD: LFB Cadmium Manganese Nickel Uranium Sample lD: C08070597{04AMS4 Cadmium Manganese Nickel Uranium Sample lD: C08070597{0'lAttlSD4 Cadmium Manganese Nickel Uranium Laboratory Fortified Blank 0.0498 mg/L 0.0486 mdl 0.0495 mYL 0.0489 mgA Post Digestion Spike 0.0509 mg/L 0.0528 mg/L 0.0495 mgrl 0.0534 mg/L Post Digestion Spike Duplicate 0.0504 mgA 0.0502 mg/L 0.0487 mg/L 0.0508 mg/L Method Blank ND ND ND ND 1E-05 sE-05 0.0007 1E-05 0.0010 100 0.0010 97 0,0010 99 0.00030 9E 0.010 102 0.010 101 0.050 97 0.00030 107 0.010 101 0.010 96 0.050 96 0.00030 '102 Run: ICPMS2{-0807294 Run: ICPMS2{-0E0729A 85 115 8s 115 85 115 E5 't15 Run: ICPMS2-C-0807294 70 130 70 130 70 130 70 130 Run: ICPMS2-C_080729A 70 130 70 130 70 130 70 130 Batch: R105057 07129108 12:44 07t29t08 12"51 071291082O:11 071291082Oi18 20 20 20 20 mg/L m/L mg/L mdL 't.0 4.9 0.0 5.0 Method: E900.1 Sample lD: irBGA.0l,07 Gross Alpha minus Rn & U Sample lD: LCS€A-0'147 Gross Alpha minus Rn & U Sample lD: C08070511{01DMS GrossAlpha minus Rn & U Sample lD: C08070511{tolDlulSD Gross Alpha minus Rn & U Method Blank 0.6 PCi/L Laboratory Control SamPle 27. pCilL Sample Matrix Spike 30.4pCi/L Sample Matrix Spike Duplicate 29.8pCi/L Run: G5000W-080723A Run: G5000W-080723A 70 130 Run: G5000W-080723470 130 Run: G5000W_0807234 70 130 Batch: GA-0147 O7l27lOB 06:33 07/27108 06:33 07127108 06:33 07127108 06:33 22.2 101 103 101 2.2 Qualifiers: RL - Analyie reporting limit ND - Not deteded at the reporting limit. EMRGY LABORATORIES, lrli . 2393 Salt Creek Hi,Thway (82601) . PO. Box 3258 . Copr, W92602 Toll Free 888.235.0515 ' 302235.0515 ' Fax 302234.1639 ' casper@energylab.com , wmueitergylab.com QA/QC Summary Report Glient Denison Mines (USA) Corp Project JulyGroundwater Report Date: 07/31/08 Work Order: C08070597 Analyte Result Unlts RL %REC Low Limlt High Limit RpD RpDLimit eual Method: SW8260B Sampla lD: 14Jul-08_LCS-3 Benzene Carbon tetrachloride Chloroform Chloromethane 6+p-Xylenes Methylene chlodde Naphthalene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene{4 Sun: Dbromofluoromethane Surr: p-Bromofl uorobenzene Surr: ToluenedS SamplelD: l4Jul-08_MBLK_6 Benzene Carbon tetrachloride Chloroform Chloromethane m+pXylenes Methyl ethyl ketone Methylene chloride Naphhalene o-Xyl€ne Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surn Dibromofluoromethane Sun: pBromofluorobenzene Sur: Toluene.dS Sample lD; G08070597-0O4CilS Benzene Carbon tetrachloride Chloroform 6+prXylenes o-Xylene Toluene Xylenes, Total Surr 1,2-Dichlorobenzene-d4 Surn Dibromofl uoromethane Surn p-Bomofl uorobenzene Surr: ToluenedS Laboratory Control Sample 9.8 ug/L 11 ug/L 10 uS/L 9.5 ug/L 19 ug/L 9.5 ug/L 9.5 ug/L 10 ug/L 11 ug/L 29 ug/L Method Blank ND ND ND ND ND ND ND ND ND ND ND Sample Matrix Spike 190 u/L 25O ug/L 240 ug/L 380 udL 20O uS/L 210 ug/L 580 ug/L Run: 5975VOC1_080714A 70 130 70 130 70 130 70 130 70 13070 130 70 13070 130 70 13070 130 80 120 1.0 98 1.0 106 1.0 103 1.0 951.0 93 1.0 95 1.0 951.0 100 1.0 106 1.0 96 1.0 100 1.0 98 1.0 1021.0 101 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 130 130 120 Run: 5975VOC1_08071,[A Batch: R104206 0711410810t10 47fi4108 11:lt6 0711410823123 70 80 80 ug/L ug/L ug/L ug/L ug/L ug/L uilL udL UdL udL udL 10 10 10 10 10 10 10 1.0 1.0 1.0 1.0 112 80106 70 92 80 90 80 95 70 126 70 116 70 94 70 101 70 105 70 97 70 98 80 118 70 107 8o 104 80 Run:5975VOC1 0807r4A 120 130 120 120 130 130 130 130 130 130 130 120 130 120 120 Qualifiers: RL - Analyte reporting limit.ND - Not detected at the reporting limit. ENEaGY LABOqATOFIES, II,IC, . 2SgS Salt Creek HEhway (82il1) 'P.O. aox 3258 ' Caspet W82602 TittFree888.2eS.05l5 . 307.295.0515 . Fax 307.234.1639 ' casper@energylab.com'wwwenergylab.com QA/QC Summary Report Client Project: Denison Mines (USA) CorP July Groundwater Report Date: 0781/08 llYork Order: C08070597 Method:sw8260B Sample lD: C08070597-004CitSD Benzene Carbon tetrachlofide Chloroform 6+p-Xylenes o-Xylene Toluene Xylenes, Total Surr:'1,2-Dichlorobenzened4 Sun: Dibromofluoromethane Surr: p-Bromofl uorobenzene Surr: Toluene-d8 Sample Matrix Spike DuPlicate 200 ug/L 240 ug/L 240 ug/L 400 ug/L 210 ug/L 220 ug/L 610 ug/L Run: 5975VOC1 -0807'1 4A 10 10 10 10 10 10 10 1.0 't.0 1.0 1.0 100 120 114 99 104 111 101 99 1'10 104 102 70 70 70 70 70 7A 70 80 70 80 80 130 4.5 130 4.9 130 2.0 130 5.0 130 3.5 130 5.9 130 4.5 120 0.0 130 0,0 120 0.0 120 0.0 0711t+10823:59 20 20 20 20 20 20 20 10 10 10 't0 Resutt Units RL %REC Low Limit High Limit RPD RPDLimlt Qual Batch: R104206 Qualifierc: RL - Analyte reporting limit.ND - Not detected at the reporting limit. !ooo g 5E>dEo.oo.C, J .9 .= tcdE..; ilEo-Ea @EgEE*E EE5x! oEd oi?ef,o o EEEcE !t EE 8o>=;Eiao ^oete.t ;u=h E;E5:bot =!6 L 3EE'.:.Eaf.=E'1,giE dE-g€Es EEE94{iif s. AEPoo:EO\ u.t 5i o eP I EE EE.i -=otE> 6€ipo9ooE ^EF6E}ItLSB9*.i-o )o E E6E E .E \: -3q{*stEJo0-i ?J,t-{-l -EL., r. l)og n fi 6lE{.o\9=E-N LoEo\:E \)6?E\ 6(i \d-cL \^E\Ga j" NJNNN \ = \lt E.S rs 'J: \\ E\B-tiaE(!,zsET6(9() lloo,cflll Jq EH(/)= I dco-l _e=po -l zzz Sv,Po= E,IEiF,,A N(SI l {(l\u()g t-l t AN N D fi Es.,l;UH t- 3 = ,6 iJ.o rlOficft >{t( t 0o(J oo FooE6o (ucI.9 o) 3E€q FE :Y"E5 ^- a'EEe -Eofi€ E:x qt E,tsok:F5 (Utt, J \--6{ ,_).. 0- \ ss\\ rt ?t ry +idLDo) 0,oE g,L --fuyg puhoeurnlHsnu [y1) punoeunl puno11 ; cuN \F\s V $ \h'\Or<tr l-o l-it5/E,i O-') 'L a)/g /-,c o OSHCVIIV 3!lS u 3, lfTF twul \\? rqr';tYtr rvo)\ \li$tItat \ TE boo Ac'Eo oEI'-qcoE Tacc .!,c .c,( cc cc c Gil. cuca,lC .ga E( U- (.,tE \ 6 -r*^-,r'v.v,J-[1\\ i \Nvt'zvrvlY \\\8in{ ['\ \ s EV5s6{ l^ \) *,{- ^(- \-'. BS EN g \\\ re$O ^Bsseolg X uoleteoetrspltospgpgrapffi rff [3 I ? If, 3 I 3 I J 3 I I( 11 ..9E^g,/ \ CIG,cl. Eoo t4 { t- ia a.\A \-: {:\ cc t'<;s 8*r EtE =(! =Eoo.G'v. Ytt/ 6@(, ttt d)o'6 c (6 EoTL DFo UJooIU o L.9LCL!,etro> or6 o9iirJ =6YE ooP 4.E= JEu NE.o < lLo otro.= &E DEo ()'oq< AF JBB 9 o =o tr(L 5 =Eo(L ot!Ed,L'5qq)t oo.ov EoEOOeo.=o'l) -.: E Jf,Mt4 $r)v $f 0 Ef;6-o '0as\i-}| )s\}\ ).\sr.l. \o:YI+ Dos) G\r 7-JO:6(rJlrO zZ.lJ .9!El3JaLtr, =6<=a J E Ji c-t s E N C] M =o \s I E* Vt\ sJ o ts o o 0 EHig6G=o J o -l oo) (UL o,t,EL.oOR EEE,i r.l IoEOP =EEhortrE -^c: .9$*, c, -b*3E;tr8<frtr5a)'-LOGEo>Ett6OP6[ -o-EoatrtoEc* (EHsfi(Jd H Energy Laboratories lnc Workorder Receipt Checklist Denison Mines (USA) CorP Login completed by: Kimberly Humiston Reviewedby: KerriSchroeder Reviewed Date'. 7 11412008 1 :42:00 PM Shipping conteiner/cooler in good condition? Custody seals intad 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 containelbottle? Sample containerc intact? Sufficient sample volume for indicated test? All samples received within holding time? Container/Temp Blank temperatule: Water - VOA vials have zero headspace? Water - pH acceptable upon receipt? Yes [J Yes fl Yes ! Yes fl Yes fl Yes fl Yes [t Yes fl Yes fl Yes M 2"C On lce Yes ffi Yes fl NoI No fl No fJ NoE No! No EI No fI NoE Non No fl No El Non Not Present I Not Prosent E Not Pnesent EJ NoVOAvialssubmitted tr NotApplicable tr rffirlilil]ffi u[ffi tlltillItlffiililx c08070s97 Date and Time Received: 7l11l2OO8 9:30 AM Received by: ah Carrier name: Next DaY Air Contact and Coneciive Action Commonts: Sample MW 32 on the Chain of Custody was labeled MW 17 on the bottle. Logged samples per Chain of Custody. ENEBGY LABOBATORIES, lNC. . 2393 Salt Creek Hi.qhway (82il1) ' P.O. Box 3258 ' Cop"t WY 82602 Toll Free88{1.235.0515 . 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com'www.eneryylab.mm Da!.r; 01-Augr08 CLIENT: ProJect: Denison Mines (USA) Corp July Groundwater CASE NARRATIVE Sample Delivery Group: C08070597 THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT ORIGINAL SAMPLE SUBMITTAL(S) All original sample submittals have been retumed with the data package. SAMPLE TEMPERATURE COMPLIANCE: 4"C (t2.C) Temperature of samples received may not be considered properly preserved by accepted standards. Samples that are hand delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun. GROSS ALPHA ANALYSIS Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters. Data provided by this method for non potable waters should be viewed as inconsistent. MDON IN AIR ANALYSIS The desired exposure time is 48 hours (2 days). The iime delay in returning the canister to the laboratory for processing should be as short as possible to avoid excessive decay. Maximum re@mmended delay between end of exposure to beginning ofcounting should not exceed 8 days. SOIUSOLID SAMPLES All samples reported on an as reccived basis unless otherwise indicated. ATRAZINE. SIMAZINE AND PCB ANALYSIS USING EPA 505 Data for Atrazine and Simazine are reported from EPA 525,2, not from EPA 505. Data reported by ELI using EPA method 505 reflects the results for seven individual Aroclors. Wlten the results for all seven are ND (not detected), the sample meets EPA compliance criteria for PCB monitoring. SUBCONTRACTING AMLYSIS Subcontracting of sample analyses to an outside laboratory may be required. lf so, ENERGY LABORATORIES will utilize its branch laboratories or qualified contracl laboratories for this service. Any such laboratories will be indicated within the Laboratory Analytical Report. BRANCH LABORATORY LOCATIONS eli-b - Energy Laboralories, lnc. - Billings, MT 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 Laboralories, lnc. - College Station, TX CERTFICATIONS: USEPA: WY00002; FL-DOH NELAC: E87641; Arizona: A20699; Califomia: 02118CA Oregon: WY20O0O1; Utah: 307235O515; Virginia: 0OO57; Washington: C1903 ISO 17025 DISCI.AIMER: 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 meet requiremenls as set forth by the above accrediting authorities. Some results requested by the client may not be covered under these certifications. All analysis data to be submitted for regulatory enforcement should be certified in the sample state of origin. Please verify ELI's certification coverage by visiting wv'arv.energylab.com ELI appreciates the opportunity to provide you with this analylical service. For additional information and services visit our web page ritnrnrv.energylab.com. fiF#f{,i1?,?Ef{?tr#? *,';i,1'!,f'l!,95i[ilfl!-:"l1i!J3''i;3'E1i'!r?'';*';:ryilJ:'f:' ANALYTICAL SUMMARY REPORT October 13, 2008 Denison Mines (USA) CorP 6425 S HwY 191 Blanding, UT 84511 Workorder No.: C08090487 Quote lD: C1640'POC Wells / Monthly Groundwater $ampling I I I I I I I I I I Project Name: September Monthly Re-SamRle Energy Laboratories, In.. '"""iu"d th" follo*il Sample lD Client SamPle lD Collect Date Receive Date Matrix 09/08/08 10:12 0911 1/08 Aq"""* Metals by ICP/ICPMS, Dissolved c08090487-001 MW 14 c08090487-002 MW26 09/08108 10:43 09/1 1/08 A*r"** Metals by ICP/ICPMS' Dissolved SWS26OB VOCs, Standard List c08090487-003 MW 32 09/08/08 14:03 09/1 1108 n** Metals by ICP/ICPMS' Dissolved. Gross Al'pna minus Rn222 and Uranium c08090487-004 MW60 09/08108 14:45 O9l1 1 108 no*or" Metals by ICP/ICPMS' Dissolved' rYH'vsv 6toi" nrirn, minus Rn222 and Uranium SW826O-B VOCs, Standard Ust GO8o9o487-005 MW65 09/08/08 14:03 09/1 1/08 A"r** Metals by ICPIICPMS, Dissotved' rYsYvYv croiJnrirna minus Rn222 and Uranium 09/08/08 14:45 09/1 1/08 eq*or. SW8260B VOCs, Standard List C08090487-006 TriP Blank I I I I I I I I I ffitionsorproblemswiththeanalysesarenotedintheLaboratoryAnalyticalReport,theffiUSr**ary aeport, orthe Case Nanative' lf you have any questions regarding these tests results' ptease call' ReportAPProved BY:&1t* MhT Summary Report; Page 1 of ' ENEBGY LAB-oBAroRtEs. tNc '23s3 satt r*r y;g-:"ffi3r,i;3rE1ir"*;rf;:i:[i{':r.1i!'l' iiiFiiiaa.'iss.tiiii ; soz, 10515 . Fax 307.234.f63e ', casperwenersvaa'u Client: Proiect: Lab lD: Client SamPIe lD: Denison Mines (USA) CorP September MonthlY Re-SamPle c080s0487-001' MW 14 LABORATORY ANALYTICAL REPORT / RePort Date: Collection Date: DateReceived: Matrix: 10/'13/08 09/08/08 10:12 09/11/08 Aqueous MCU QCL Method Analysls Date / BYQualifiers RL 10 0.30 2030 uglL 63.0 ug/L I I I I I I I I I I ir lr lr lr Result Units OsDAao 19:19 / ts OgnAAl19:19 / ts E200.8 8200,8 METALS - DISSOLVED Manganese Uranium Report Definitions: RL - Analyte rePorting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level' ND - Not detected at the reporting limit' I EfFEf{,#f,?E[?tr[7,',rf;i't'f,fli?5ifr;gg-:ll!,i93;f;3,8:;,',*;,,ifif€billx1!,1' I I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: ClientSamPle ID: Denison Mines (USA) CorP September MonthlY Re'SamPle c08090487-002 MW26 Report Date: Collection Date: DateReceived: Matrix: 10/13/08 09/08/08 10:43 09/1 1108 Aqueous Quallfiers RL MCUQCL Method Analysis Date I BYRasult Units ugiL ugL I I I I I I I I I I I I Analyses METALS . DISSOLVED Manganese Uranium VOLATILE ORGANTC COMPOUNDS Acetone Benzene Carbon tetrachlodde Chloroform Chloromethane Methyl ethyl ketone Melhylene chloride Naphthalone Toluen€ Xylenes, Total Sur: 1,2-Dichlorobenzene'd4 Surr: Dibromofluoromethane Surc PBromofl uorobenzene Surr: Toluene'd8 1 140 29.4 ND ND ND 460 ND ND 11 ND ND ND 106 114 115 107 ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L uglL ug/L o/oREC %REC %REC o/oREC 10 0.30 20 1.0 1.0 100 1.0 zo 1.0 1.0 1.0 1.0 80-120 70.130 E0-120 80-120 E200.8 E200.8 sw8260B SW826OB SW826OB sw8260B SW826OB SW826OB sw82608 SW8260B SW826OB sw82608 sw8260B sw8260B sw6260B sw8260B oga2l08 19:25 / ts 0912/0819:25 / ts 09/1 8/08 03:49 / ilr 09i 1 8/08 03:49 / ilr 0S/18108 03:49 / ilr Ogll7/08 15:49/ jlr Ogll 8/08 03:49 / ilr 09ll 8/08 03:49 / ilr osfl 8/08 03:49 / jlr 09/18/08 03149 I ilr 09/18/08 03:49 / ilr 09/1 8/08 03:49 / ik 09/18/08 03:49 / Jk O9/1 8/08 03:49 / jlr 09ll 8/08 03:49 / jlr 09n 8&8 03:49 / llr I I I Report Definltions: RL - Analyte rePorting limit. QCL - Quali$ conhol limit. MDc - Minimum detectable cancentration MCL - Maximum contaminant level- ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference' I ,trF#f{,iif,?Ef{?i7i' 'Yf;i't?,f!L95fl ##-:[f,'f,i3i,i;3,tri'n'u;?;f:!nili!f"'l' I I I LABORATORY ANALYTICAL REPORT Clienfi Denison Mines (USA) CorP / Proiect September Monthly Re-SamOle ,/ Lab lD: C08090487'003 t/ Cllent SamPle lD: MW 32 t RePortDate: 10113108 Collection Date: 09/08108 14:03 DateReceived: 09/11108 Matrix: Aqueous MCU QCL Method Analysis Date / BYResult Units Qualifiers RLI I I I I I I I I I I I METALS. DISSOLVED Cadmium lron Manganese Nickel RADIONUCLIDES - DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC 0.50 30 10 2A 2.45 ug/L 8780 ug/L 5130 ug/L 60 ug/L 2.9 0.5 0.3 pCi/L pCi/L pCi/L E200.8 E200.7 E200.8 E200.8 E900.1 E900.1 E900.1 09nU0e 19:32 / ts 09/23108 17:30 / cP OgnUo'19:32 / ts 09122/08 19:32 / ts 10107108 09:27 I cnat 10/07/08 09i27 lcr,i.t 10f07108 agi27 I cftu I I I Report Definitions: RL - Analyte rePorting limit. QCL - QualitY mntrol limit. MDC - Minimum detBctable concontration MCL - Maximum contaminant level. ND - Not detecled at the reporting limit. I rtrF#f{#tr?Ef{?5lE: 'vo";;'!?,fll9!iil f&{:[l!'ifi3;f;3,8:;i:r"'-'f;:f:!n[:'X1':' I I I LABO RATORY ANALYTICAL REPORT Client: Project: Lab lD: Client SamPle lD: Denison Mines (USA) CorP September MonthlY R+'SamPte c08090487-004 MW60 RePort Date: 10/13/08 Collection Date: 09/08/08 14:45 DateReceived: 09/1 1/08 Matrir Aqueous Result Units Qualifiers RL MCU QCL Method Analysis Date / BY AnalysesI I t I I I I I I I I t METALS . D]SSOLVED Cadmium lron Manganese Nickel Uranium RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chlodde Naphthalane Toluene Xylenes, Total Surn 1.2-Dichlorobenzene-d4 Surc Dibromofluoromethane Sur: p-Bromofluorobenzene Surr: ToluenedB ND ND zo ND ND 0.9 PC|/L0.3 pCi/L 0.3 PC|/L ug/L ug/L udL ug/L ug/L 0.50 30 10 20 0.30 E200.8 E200.7 E200.8 E200.6 E200.8 E900.1 E900.1 E900.1 SW826OB SW826OB sw82608 SW8260B sw8260B SW82608 sw8250B sw8260B sw8260B SW826OB SW826OB SW826OB SW826OB SW826OB 0Sl2AAg 20:06 / ts 09/23108 17:50 I cP osnUll 20:061ts Ogl22l08 20:06 / ts 09nU08 20:06 / ts 10/07/08 09:27 I cw 11l07l0g 09:27 / crw 1010710809:27 lcrtt 09/17108 07:40 / ilr 09/17108 07:40 /jlr 09/17108 07:40 / ilt 09/17/08 A7"4A l N 09/1 7108 07:40 / ilr 09/1 7/08 07:40 / ilr 09/17108 A7:40 I ilr 09ll 7/08 a7:4o I ilr 09l17lo1 o7'.4o I ilr 09/17/08 07t40litr 09/17108 07'.40 t ilt ogll7/08 07i4O I ilt O8/fln9 o7:4o lik 09117108 07:40 I ilr ND ND ND 4.1 ND ND ND ND ND ND 103 111 100 100 ug/L ug/L ug/L ug/L ug/L ug/L ug/L uS/L udL ug/L %REC %REC %REC %REC 20 't,0 1.0 't,0 1.0 20 1.0 1.O 1.0 1.0 80-120 70-1 30 80-120 80-1 20 I I I Report Definitions; RL - Analyte reporting limit' QCL- Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level' ND - Not detected at the reporting limit. I trFyf{ath'5?E{?glf:'trf;,,'!'!,i1L95ilfifl{:#',i%;,i;3rf,:ii'*;.';:f:ln[,[:::;' I I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client SamPle lD: Denison Mines (USA) CorP September MonthlY Re'SamPle c08090487-005 MW65 Report Date: Collectlon Date: DateReceived: Matrix: 10/13108 09/08/0814:03 09/11/08 Aqueous Result Units Qualifiers RL MCU QCL Method Analysis Date, BY I I I I t I I I I I I I METALS . DISSOLVED Cadmium lron Manganese Nickel RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC E200.8 E240.7 E200.8 E200.8 0.50 30 10 20 2.38 ug/L 8800 ug/L 5030 ug/L 60 ug/L 3.4 pCi/L 0.6 PC|/L0.3 poilL E900.1 E900.1 E900.1 0912A08 20:131ts 09/23/08 17i54 I cP 09i22/08 20:13 I ts 09122108 20:13 / ts fi10710809:27 lcrw fi1071080927 I cNY 10/07/08 09:,27 lcq't I I I Repoft Dsfinitions: RL - Analyte reporting limit. QCL - QualitY control limit. MOC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. I f"fF*f{,tif,?Ef{?5iif' 'rf;;':'Efg[95fti[gg.%W3;,:;3",,:iiF"'t ffi;triailJ11ff' I I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) CorP September MonthlY Re'SamPle c08090487-006 Trip Blank RePortDate: 10/13/08 Collection Date: 09/08/08 14:45 DateReceived: 09/1 1/08 Matrix: Aqueous Result l..lnits Qualifiers RL MCUQCL Method Analysis Date / BY I I I I I I I I t I I I Analyses VOLATILE OROANIC COMPOUNDS Acetone Benzene Carbon tetrachloride ChIoroform Chloromsthane Methyl ethyl ketone Mothylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Diohlorobenzene-d4 Surr Dibrornofluoromethane Surr: p-Bromofl uorobenzsne Surr: Toluene-d8 ND ND ND ND ND ND ND ND ND ND 98.0 93.0 98.0 100 u9/L ug/L ug/L ugiL ug/L ug/L ug/L ug/L ug/L ug/L %REE %REC %REC %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-1 20 70-130 80-120 80.120 SW826OB SW826OB SW826OB sw82608 sw8260B sw8250B SW826OB sw8260B SW826OB SW826OB SW826OB sw82608 sw8260B SW82608 09116/08 17t42lilt o9/16/08 17"42lilt 09/16/08 17:42liV 09/16/08 17:42lilr 09/16108 17:42liV 09/16/08 't7142 lilt 09/16/08 17:42titr 09/16108 17:42tilr 09/16108 17:42lilr 09/16/08 17i42lilr 09/16/08 17i42 I ilt 09/16/08 17:42 I ilt 09/16108 17:42lilr 09/16/06 17:42tik I I I Roport Definitions: RL - Analyte reporting limit. QCL - Quali$ control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the repoding limit. I #FE!{,iii,?8{?yE:'t'f;;u't'!,f!i95i[.figg.:xlffi3;,:;3,8:rtr*?;.9;:f:ib[:'!:'!':' I I I I I I QA/QC Summary RePort Clienft Denison Mines (USA) CorP Project September Monthly Re-Sample Report Date: 10113/08 Work Order: C08090487 Method: Sample lD: lron Sample lD: lron Sample lD: lron Sample lD: lron F,200.7 M8.0809234 LF8-080923A c0809048$.001CMS2 c0809048$001CMSD2 Method Blank ND mg/L Laboratory Fortified Blank 1.05 ms/L Sampte Matrix SPike 2.08 mg/L Sample Matrix SPike DuPlicate 2.15 mg/L 0.005 0,030 3.5 1050.030 103 106 Run: ICP2-C-0809234 Run: |CP2-C-0809234 85 115 Run: |CP2-C-0809234 70 130 Run: ICP2-C-0809234 70 130 Batch: R108054 09/23108 15:36 09/23/08 15:40 0912310817:22 09/23/0E 17:26 200.030 RL %REC Low Limit High Limlt RPD RPDLimit 3.5 2.8 6.2 3.4 I I I I I I I I I Method: E200.8 Sample lD: LRB Cadmium Manganese Nickel Uranium Sample lD: LFB Cadmium Manganese Nickel uranium Sample lD: G08090487{05AMS4 Cadmium Manganese Nickel Uranium Sample lD: C08090487'005AMSDrI Cadmium Manganese Nickel Uranium Method Blank ND mg/L ND mg/L ND mg/L ND mg/L Laboratory Fortified Blank 0.0512 mgll 0.0514 mgA 0.0520 mgL 0.0503 mg/L Sample Matrix SPike 0.04sS mg/L 5.08 mS/L 0.104 mg/L 0.0540 mglL Sample Matrix Spike DuPlicate 0.0517 mglL 5.22 mglL 0.111 mg/L 0.0559 mg/L 'tE-05 5E-05 0.0007 IE 05 0.0010 102 0.0010 103 0.0010 104 0.00030 102 0.010 95 0.010 0.050 88 0.00030 I03 0.010 s9 0.010 0.050 101 0-00030 107 Batch: R107999 091221O812:31Run: ICPMS2-C-080922A Run: ICPMS24-080922A85 115 85 1ls 85 ',t15 85 115 Run: ICPMS2€-080922A 70 130 70 130 70 70 130 130 Run: ICPMS2-C-080922A Agnzol12i38 0912210820:'20 ,A 09n2l\82oi27 20 20A 20 20 70 70 70 70 130 130 130 130 I I I Qualifiers: RL - Analyte reporting limit. ND - Not detected at the teporting limit. A - The analyte level was greater than four times the spike level' ln accordance wittr ttre method % recovery is not calculated' f,fFl!{r#i,?E{%tr'''{,';;'l'i,f'1i95;[ i#!.1f"i!j3;f;3,8tri'*!,;,',,if;f;ib[{,X1tr'I I I I I I I t I I I I I I t il lr lr lr QAIQC Summary RePort ClienE Denison Mines (USA) CorP Project September Monthly Re-Sample Method: E900.1 Sample lD: MB.GA4169 Gross Alpha minus Rn & U Sample lD: LCS'GA'0169 Gross Alpha minus Rn & U Sample lD: TAP WATER'IIIS Gross Alpha minus Rn & U Sample lDr TAP WATER'IJISO Gross Alpha minus Rn & U Report Date: 10/13/08 Work Order: C08090487 Method Blank 0.8 PCI/L Laboratory Control SamPle 27.2 PCiIL Sample Matrix SPike 26.5 PCI/L Sample Makix SPike DuPlicate 26.3 pCi/L Run: G5000W-08100'lB Run: G5000W-0810018 100 70 130 Run; G5000W-0810018 97 7A 130 Run: 65000W-081001 B 7A 130 Batch: GA{169 10/07/08 09:27 10fi710809:27 10/07/08 18:55 10/07/08 18:55 21.3 Rssult Units RL %REC Low Limit High Limit RPD RPDLimit Qual RL - Analyte reporting limit.ND - Not detected at the reporting limil I EfF1f{,i1,"?Ef{?tr'f,i 'rf;i'!'i,f![95i{ f;gg-:X#igi3;#3,'f,'{,?*';";:f:iaff{'X1':' I I I I I I I I t I I I I I I QA/QC Summary RePort Clienfi Denison Mines (USA) CorP Project: SeptemberMonthly Re-Sample Method: SW8260B Sample lD: 16SeP-08-LCS-3 Acetone Benzene Carbon tehachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylane Toluene Xylenes, Total Surr; 1,2-Dichlorobenzene,.d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surn Toluene-d8 Sample lD: 16€gP-08-MBM-6 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzened4 Sum Dibromofluoromethane Sun: p-Bromofl uolobenzene Surr Toluened8 Sample lD: C08090521-008CMS Acetone Benzgne Carbon tetrachloride Chlorofotm Chloromethane m+pXylenes Methyl ethyl ketone Report Date: 10/13/08 Work Order: C08090487 Laboratory Control SamPle 93 ug/L 10 ug/L 10 ug/L 9.8 ug/L 9.9 ug/L 20 ug/L 90 ug/L s.2 ug/L 8.5 ugi L 9.7 ug/L 9.9 uglL 30 ug/L Method Blank ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND uglL ND ug/L ND ugIL ND ug/L ND ug/L ND ugll Sample Makix Spike '13000 ug/L 3900 ug/L 5000 ug/L 5800 ug/L 1700 ug/L 5900 ug/L 18000 ug/L 93 1.0 1A2 1.0 103 1.0 98 1.0 99 1.0 10'l 20 90't.0 92 1.0 85 I.0 97 1.0 99 1.0 ',100 1.0 100 1.0 96 1.0 98 1.0 100 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 99 97 98 100 80 130 80 120 Run: GCMS2-0809168 80 120 70 130 80 124 80 120 Run: GCM52-0809168 Run: GCMS2-0809168 09/16/08 11:37 0g/16/08 13:33 09/17108 11:00 7A 70 7A 7A 7A 70 70 ?0 70 7A 70 70 80 70 130 130 130 130 130 130 't30 130 130 130 130 130 120 130 92 97 124 104 84 98 88 100 100 100 100 't00 100 70 70 70 70 70 70 7A 130 130 130 130 130 130 130 RssultUnitsRL%REcLowLimitHighLimitRPDRPDLimitQual I I I Qualifiers: RL - Analyto reporting limit.ND - Not detected at the reporting limit. I ENERGY L/IEORATORIES, lNC. ' 2393 Salt Creek Highway (82601) ' P.O. 8ox,c258 ' Casper; WYB2602 ToltFree888.235.05l5 . 301 ' 'i.0515 , Fax 307.234.1639 , casper@energylab.l , www.energylab.com I T QAIQC Summary Report ClienE Denison Mines (USA) CorP Project SeptemberMonthly Re-Sample Report Date: 10/13/08 Work Order: C08090487 70 7A 7A 70 70 80 7A 80 80 I I t I I I I I I I I I T Analyte Result Units RL %REC Low Limit Hlgh Limit RPD RPDLimit Qual Method: SW8260B Sample lD: C0809052'l-008CMS Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-8romofl uorobenzene Surr: Toluene-d8 Sample lD: C08090521-008CMSD Acetone Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl othyl ketone Mathylene chloride Naphlhalene o-Xylene Toluene Xylones, Total Surn 1,2-Dichlorobenzene-d4 Surc Dibromofluoromethane Surn pBromofluorobenzene Surn Toluene-d8 Sample Matrix Spike 1800 ug/L 1400 ug/L 3900 uglL 3300 ug/L 9800 ug/L 100 90 100 72 100 98 100 97 100 98 1.0 99 1.0 105 1.0 99 1.0 101 98 100 101 100 128 100 105 100 90j00 101 100 93 100 94 100 86 100 100 100 100 100 101 1.0 101 1.0 103 1.0 99 1.0 100 Run: GCMS2 0809168 Run: GCMS2_0809168 Batch: Rl07718 09/1 7/08 1 1:00 09/17108 1 f:38 2A 2A 20 20 20 20 20 20 20 20 20 10 10 10 IO 130 130 130 130 130 120 130 120 120 Sample Matrix Spike Duplicate 20000 ug/L 4000 ug/L 5100 ug/L 5800 uS/L 1800 udl 6100 ugll 19000 uglL 1900 ug/L 1700 uglL 4000 ug/L 4000 ug/L 10000 ug/L 7A 70 70 70 70 70 70 70 70 70 70 70 80 70 80 80 130 130 130 130 130 130 130 130 130 130 130 130 120 130 120 120 3.8 J 0.3 o ?.8 6,2 4.3 17 1.8 2.9 2.4 0 0 0 0 I t I Qualifiers: RL ^ Anatyte roporting limit.ND - Not detected at the reporting limit. I ENEBQY LABOBATORIES, lNC. . 2393 Salt Creek Highway (82601) , PO. Box 3258 ' Caspefi l/W 82602 TollFree888.235.05l5 . 307(. -.0515 ' Fax 302234./6,?9 ' casper@energylab.4 'www.energylab.comt I QA/QC Summary Report Client: Denison Mines (USA) CorP Prollect September Monthly Re'Sample Report Date: 10113/08 Work OrdEr: C0809M87 I I I t I I I I I I I I I Analyte Result Units RL %REC Low Llmit High Limit RPD RPDLimit Qual Method: Sw8260B Sarnple lD: 091708-LCL3 Benzene Carbon tetrachloride Chloroform Chloromethane 6+pXylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene ToIuene Xylenes, Total Surn 1,2-Dichlglobsnzsne-d4 Surr: Dibromofluoromethane Surn pBromofluorobenzene Surr: ToluencdS SamplelD: 091708-MBLK-6 Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalens o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: Ioluene-d8 Sample lD: C08090521-022CMS Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Laboratory Control Sample 9.1 ugil 9.9 ug/L 8.9 ug/L 9.0 ug/L 17 uglL 89 ugll 8.7 ug/L 9.1 ugiL 8.4 ug/L 8.6 ugll 26 ug/L Method Blank ND uSlL ND uS/L ND ug/L ND uS/L ND ug/L ND ugll ND ug/L ND ug/L ND ug/L ND ug/L ND ugll Sample Matix Spike 200 ug/L 230 ug/L 350 ugll 180 ugll 370 uglL 2000 ug/L 1S0 uSiL 210 ug/L 180 ug/L 91 99 89 90 87 89 87 91 84 86 86 115 104 114 98 142 70 114 70 111 70 92 70 93 70 99 7A 94 70 104 70 88 70 Run: SATURNCA-080917A 70 130 70 1307A r30 70 130 7A 13070 130 70 130 70 13070 130 70 130 70 130 80 120 70 130 80 130 80 120 Run: SATURNCA 0809174 Batch: R107771 09l17lAB 11:.41 09/17108 13:35 09/18/08 07:37 1.0 1.0 1.0 1,0 1.0 z0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.5 0.5 o.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 10 10 '10 10 10 20 10 10 10 120 130 120 120 98 E0 105 70 93 80 94 80 Run: SATURNCA_080917A 130 130 't30 130 130 130 130 130 130I I I Quatifiers: RL - Anal$e reporttng limit.ND - Not detected at the reporting limit. I ENERGY LABORATOHES, INC . 2393 Salt Creek Highway (82601) , P.O. 9ox iz58 , Caspet WY 82602 To1 Free888.235.0515 . 30f. :.05/5 . Fax 307.234.1639 . casper@energylab.l , www:energytab.com I I QA/QC $ummary Report Clien$ Denison Mines (USA) Corp Project September Monthly Re-Sample ReportDate: 10/13108 Work Order: C08090487 I I I I t I I I I I t I I Analyte Result Units RL %REC Low Limit High Limit RPO RPDLimit Qual Method: SW8260B Sample lD: C08090521-022CMS Toluene Xylenes, Total Surr: 1.2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr pBromofluorobenzene Surc ToluenedS Sample lD: G08090521-022CMSD Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chloride Naphlhalene o-Xylene Toluene Xylenes, Total Surr 1,2-Dichlorobanzene-d4 Surr: Dibromofluqromethan6 Surr pBromofl uorobenzene Surr: Toluene-d8 Sample Matrlx Spike 200 ug/L 550 ug/L 10 10 1.0 1,0 1.0 1.0 99 70 91 70 104 80 110 70 112 80 101 80 Run: SATURNCA_080917A Batch: R107771 09/18/08 07:37 09/1 8/08 08:1 5 20 20 20 20 20 20 20 20 20 20 20 10 10 10 10 130 130 't20 130 120 120 Sample Matrix Spike Duplicate 2O0 ug/L 200 ug/L 320 ug/L 190 ug/L 420 ug/L 2000 ug/L 180 ugil 234 ug/L 200 ug/L 190 uglL 620 ug/L Run: SATURNCA_080917A70 13070 130 70 130 70 13070 13070 13070 130 70 130 7A 130 70 13070 r30 80 120 70 13080 120 80 12A 10 9910 10010 98 10 96 10 10620 9810 91 10 't16 10 100 l0 96 10 1041.0 97 1.0 1011.0 1081.0 100 2.8 14 7.7 5.1 13 1.2 3,9 11 12 3.3 't3 0 0 0 0 I I I Qualifiers: RL - Analyte reporting limit.ND - Not detecled at the reporting limit. ENERGY LABOBATORIEA NC ' 2393 Salt Creek Htghway (82601) . PO. Box 3258 , Caspq WY 82602To//Free888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com. wwweirergylab.com ANALYTICAL SUMMARY REPORT October 13, 2008 Denison Mines (USA) Corp &125 S Hwy 191 Blanding, UT 84511 Workorder No.: C08090487 Quote lD: C1640 - POC Wells / Monthly Groundwater Sampling Project Name: September Monthly Re-Sample Energy Laboratories, lnc. received the following 6 samples from Denison Mines (USA) Corp on gl1ll2}Og for analysis. Sample lD Client Sample lD Collect Date Receive Date Matrir Test c08090487-001 MW 14 09/08i08 10:12 09/1 1/08 Aqueous Metals by ICPiICPMS, Dissolved c08090487-002 MW26 09/08/08 10:43 O9l1 1 t08 Aqueous Metals by ICPICPMS, Dissolved SW8260B VOCs, Standard List c08090487-003 MW 32 09/08/08 14:03 09/1 1/08 Aqueous Metals by ICP/ICPMS, Dissolved Gross Alpha minus Rn222 and Uranium c08090487-004 MW60 09/08/08 1 4:45 O9l1 1 108 Aqueous Metals by ICP/ICPMS, Dissolved Gross Alpha minus Rn222 and Uranium SW8260B VOCs, Standard List c08090487-005 MW65 09/08/08 14:03 09/1 1/08 Aqueous Metals by ICP/ICPMS, Dissolved Gross Alpha minus Rn222 and Uranium C08090487-005 Trip Blank 09/08/08 1 4:45 O9l1 1 tOB Aqueous SW8260B VOCs, Standard List As appropriate, any exceptions or problems with the analyses are noted in the Laboratory Analytical Report, the OA/QC Summary Report, or the Case Nanative. lf you have any questions regarding these tests results, please call. ReportApproved By:&"pr,ru, MuT Summary Repo(: Page 1 of. ENEBCY LABORATOBIEq lNC. . 2393 Salt Creek Hrghway (82601)' P.O. aox 3258 , Casper WY 82602 To11 Free888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com'www.energylab.com Client: Project: Lab lD; Client Sarnple lD: LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp September Monthly Re-Sample c08090487-001. MW 14 ReportDate: 10/13/08 Collection Date: 09/08/08 10:12 DateReceived: 09/1 1/08 Matrix: Aqueous Rosult Units Qualifiers RL MCU QCL Method Analysls Date / By METALS. DISSOLVED Manganese Uranium 10 0.30 2030 udL 63.0 udl E200.8 E200.8 Ogr22n819:19 / ts OgnZOS 19:19 / ts Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maxirnum contaminant level. ND - Not detecled at the reporting limit. ENERcy LABORATOnEE NC. . 2393 Salt Creek Htghway (82601) . PO. Box 3258 ' Caspec WY 82ffi2 ToltFree888.235.0515 . 307.235.0515 , Fax 307.234./639 ' casper@energylab.com'www.energylab.com Client: Project: Lab lO: Client Sample lD: . LABORATORYANALYTICALREPORT Denison Mines (USA) CorP September Monthly Re'SamPle c08090487-002 MW26 Report Date: 10/13/08 Collection Date: 09/08/08 10:43 DateReceived: 09/1 1/08 Matrix: Aqueous Analyses Result Units Qualifiers RL MCU QCL Method Anafysls Oate, By METALS. DISSOLVED Manganese Uranium VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Mehylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofl uoromethane Surr: p-Bromofluorobenzene Surr: Toluen+d8 1140 29.4 ug/L ug/L 10 0.30 20 1.0 1.0 100 1.0 20 't.0 1.0 1.0 't.0 80-120 70-130 80-120 80-120 E200.8 E200.8 SW82608 SW82608 SW82608 SW8260B SW826OB sw8260B SW826OB SWE2608 SW82608 SW826OB SW826OB SW826OB SW826OB sw8260B 09n2n8 19:25 / ts Oglz2n$ 19:25 / ts 09/1 8/08 03:49 / jlr 09/181/08 03:49 / jlr 09/18/08 03:49 / jlr Ogl17l08 15:49 lllr 09/18rc8 03:49 / jlr 09/18/08 03:49 / jlr 09/1 8/08 03:49 / jlr 09/1 8/08 03:49 / jlr 09/18/0E 03:49 /jlr 09/18/0E 03:49 / jlr 09/18/08 03:49 I jlr 09/18/08 03:49 / jlr 09/18/08 03:49 / llr 09/1 8/08 03:49 / lh ND uyL ND ug/L ND ug/L 460 ug/L ND udL ND uyL 11 u/L ND ug/L ND ug/L ND ug/L 105 ToREC '114 %REC 115 %REC 'to7 %REC Report Definltlons: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not deteded at the reporting limit. D - RL increased due to sample matrix interference. ENERGY LABOBATOBIES, lNC. ' 2393 Salt Creek Hrghway (82601)' PO. Box 3258 ' Caspet; WY82602 Toll Free 888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com' www.energylab.com Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp September Monthly Re-SamPle c08090487-003 MW32 Report Date: GollecUon Date: DateReceived: Matrix: 10/1 3i08 09/08/08 14:03 09/1 1/08 Aqueous Analyses Result Units Qualifiers RL MCUQCL liilethod Analysis Date / By METALS. DISSOLVED Cadmium lron Manganese Nickel RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (i) Gross Alpha minus Rn & U MDC 2.45 8780 5130 60 2.9 0.5 0.3 0.50 30 10 20 E200.8 E200.7 E200.8 E200.8 E900.1 E900.1 E900.1 udL uS/L udL ug/L pCi/L pCi/L pCi/L 09n?/08 19:32 / ts 09123108 17:30 I cp OgnznB 19:32 / ts 09n2n8 19:32 / ts 1010710809'.27 lcrw 10/07/08 09i27 I cN 10/07/08 09:27 I ctw Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. NO - Not detecled at the reporting limit, ENEflGY LABORATORIES, lNC. ' 2393 Salt Creek HEhway (82601) . PO. Box 3258 . Casper; WY 82602 Toll Free888.235.0515 , 307.235.0515 , Fax 307.234.1639 , casper@energylab.com. wn*energylab.com Client: Project: Lab lD: Client Sample lD: LABOR^ATORY A NALYTICAL REPO RT Denison Mines (USA) Corp September Monthly Re-Sample c08090487-004 MW60 Report Date: 10/13/08 Gollection Date: 09/08/08 14;45 DateReceived: 09/1 1/08 Matrix: Aqueous Analyses Result Units Qualifierc RL MCU QCL Method Analysis Date / By METALS . DISSOLVED Cadmium lron Manganese Nickel Uranium RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluens Xylenes, Total Surr: 1,2-Dichlorobenzened4 Surr: Dibromofluoromethane Surr: p-Bromofl uorobenzene Surr: Toluene-d8 ND ND 26 ND ND 0.9 pCi/L 0.3 pCi/L 0.3 pCi/L ug/L ug/L ug/L ug/L ug/L ND ug/L ND ug/L ND ug/L 4,1 ug/L ND ug/L ND uS/L ND udL ND udL ND uyL ND ug/L 103 %REC 111 %REC 100 %REC lOO %REC 0.50 30 10 20 0.30 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 SW826OB sw8260B SWE260B SW82608 SW8260B SW82608 sw8260B SW826OB SW8260B sw8260B sw82608 sw8260B SW826OB SW826OB 09D2t08 20:06 / ts 0923/08 17:50 / cp 09122108 20:06 / ts 0912U08 20:06 / ts 09122108 20:06 / ts 10107108 09:27 I cwv 1U07n809:27 I crvv 10107108 09:27 I cwv 09/17108 07:40 t jtr Agl17l0E 07:40 t jtr 09/17108 07'.40 t jlr 09117108 07:40 ljE 09/17108 07:40 I jtr o9t17108 07:4o tjlr Ogl17l08 07:4O t jlr 09t17108 07:40 ljlr 09117108 07:40 I jlr 09/1 7/08 07:40 I jtr 09/1 7/08 07:40 I jlr 09117t0807:4A I fir 09/17108 07:4A I fi 09t17t08 07:40 ljlr 20 1.0 't,0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-130 8G120 E0-120 Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable con@ntration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. ENERGY LABOEATOREA NC ' 2393 Salt Creek Hrghway (82601) ' PO. Box 3258 ' Caspet; WY 82602 Toll Free 888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com ' www.energylab.com Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp September Monthly Re.Sample c08090487-005 MW65 Report Date: 10/13/08 Collection Date: 09/08/08 14:03 DateReceived: 09/1 1/08 Matrix: Aqueous Analyses Result Units Qualifiers RL MCU QCL Method Analysls Date / By METALS - DISSOLVED Cadmium lron Manganese Nickel RADIONUCLIDES . DISSOLVED GrossAlpha minus Rn & U GrossAlpha minus Rn & U Precision (*) Gross Alpha minus Rn & U MDC 2.38 8800 5030 60 3.4 0.6 0.3 udL udL udL uS/L pCi/L pCi/L pCi/L 0.50 30 10 20 E200.8 E200.7 E200.8 8200.8 E900.1 E900.1 E900.1 AgD2l08 20: 13 / ts 0923/08 17:54 lcp O9/2AO8 20:13 / ts Ogl22l08 20:13 / ts 10rc7n809'.27 I crw 1Ol07lO809:27 lcrw 1010710809:27 lcrw Report Definltions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. ENEBQY LABORArOBIES, lNC. . 2393 Salt Creek HEhway (82601) ' PO. aox 3258 ' Casper, WY 82602 To/1 Free888.235.05/5 . 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com'www.energylab.com Client: Project: Lab lD: Client Sampte lD: LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp September Monthly Re-Sample c08090487-006 Trip Blank Report Date: 10/13/08 Collection Date: 09/08/08 14:45 DateReceived: 09/1 1/08 Matrix: Aqueous Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date / By VOLATI LE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: ToluenedS ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND UdL ND udl ND u/L ND ug/L 9E.0 %REC 93.0 %REC 98.0 %REC 100 %REC sw8260B SW826OB SW826OB SW826OB sw8260B sw8260B sw8260B SW8260B sw8260B sw8260B sw8260B sw8260B sw8260B SW826OB 09/16/08 17:42 I jlr 09/16/08 17:42ljlr 09/16/08 17:42 I jtt 09/16/08 17:42 I jlr 09/1 6/08 17:42 I jtr 09/1 6/08 17:42 I jtr 09/16/08 17:42 lilr 09115/08 17:42titr 09/'16/08 17:42 I it 09/16/08 17:42lilr 09/16/08 17:42 lilr 09/16/08 17:42 t 1tr 09/1 6/08 17:42 I jlr 09/16/08 17:42 I jtr 20 1.0 1.0 't.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-1 30 80-1 20 80-120 Repod Definitlons: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentr€lion MCL - Maximum contaminant level. ND - Not detec{ed at the reporting limit. ENEBCY LABOEATORTES, lNC. . 2393 Salt Creek Highway (82601) ' PO. Box 3258 ' Caspet WY82602 To/1 Free888.235.0515 . 307.235.0515 . Fax 307.234.1639 ' casper@energylab.com'www.energylab.com QA/QC Summary Report Client: Project: Denison Mines (USA) Corp September Monthly Re-Sample Report Date: 10/1 3108 Work Order: C08090487 Analyte Method: Sample lD: lron Sample lD: lron Sample lD: lron Sample lD: lron E200.7 MB-0809234 LF8-0809234 c08090485{01cMsz c08090485-O0tcMsD2 Result Units Method Blank ND mg/L Laboratory Fortified Blank 1.05 m!lt- Sample Matrix Spike 2.OA mg/L Sample Makix Spike Duplicate 2.15 mg/L Run: |CP2-C_080923A Run: |CP2-C_080923A85 115 Run: |CP2-C_080923A 70 130 Run: ICP2-C_080923A 70 130 Batch: R108064 09/23108 15:36 09/23108 15:40 09123108 17:22 09l23lOB 17:26 20 0.005 0.030 0.030 0.030 3.5 105 't 03 106 RL %REC Low Limit High Limit RPD RPDLimit Method: Sample lDr Cadmium Manganese Nickel Uranium Sample lD: Cadmium Manganese Nickel Uranium Sample lD: Cadmium Manganese Nickel Uranium Sample lD: Cadmium Manganese Nickel Uranium 1E-05 5E-05 0.0007 1E-05 0.0010 0.00't0 0.0010 0.00030 0.010 0.010 0.050 0.00030 0.010 0.010 0.050 0.00030 102 85 103 85 lU 85 102 85 88 103 99 101 107 Batch: R'|07999 09122t08 12:31 0912?/08 12:38 0912210820:20 O92AO82Ot27 20 20A 20 20 E200.8 LRB LFB Method Blank ND mg/L ND mg/L ND myL ND mglL Laboratory Fortified Blank 0.0512 mg/L 0.0514 mg/L 0.0s20 mg/L 0.0509 mg/L Sample Matrix Spike 0.0499 mg/L 5.08 mdL 0.104 mg/L 0.0540 mS/L Sample Matrix Spike Duplicate 0.0517 rnS/L 5.22 mg/L 0.111 mg/L 0.0559 mg/L Run: ICPMS2€_0809224 Run: ICPMS2€_080922A 115 115 115 115 C08090487.005Att1s4 C080*),f 87{05AMSD4 95 Run: ICPMS2{_0809224 70 130 70 130 70 't30 70 130 Run: ICPMS24-0809224 70 130 70 130 70 130 70 130 3.5 2.8 6.2 3.4 Qualifiers: RL - Analyte reporting limit. ND - Not detected at the reporting limit A - The analyte level was greater than four times the spike level. accordance with the method o/o recrvery is not calculated. ln ENEBGY LABORATOEIES, lNC. . 2393 Salt Creek Highway (82601)' PO. flox 3258 ' Casper; WY82602 ToltFree888.235.0515 . 307.235.0515 . Fax 307.234.1639 ' casper@energylab.com'www.energylab.com QA/QC Summary Report Client Denison Mines (USA) CorP Project: SeptemberMonthly Re-Sample Report Date: 10/13/08 Work Order: C08090487 j lnalyte I Result Units RL %REC Lon Limlt High Limit RPD RPDLimit Qual I Method: E900.1 Sample !D: MB-GA{169 Gross Alpha minus Rn & U Sample lD: LCSGA-0169 Gross Alpha minus Rn & U Sample lD; TAP WATER-|IF Gross Alpha minus Rn & U Sample lD: TAP WATER-iIID Gross Alpha minus Rn & U Method Blank 0.8 pci/'l- Laboratory Control Sample 27.2 pCi/L Sample Matrix Spike 26.5 pCi/L Sample Matrix Spike Duplicate 26.3 pOifl- Run: G5000W_0810018 Run: G5000W_0810018 70 130 Run: G5000W_0810018 70 130 Run: G5000W_0810018 70 130 Batch: GA-0169 101O7108 09:27 10107108 09:27 10/07/08 18:55 10/07/08 18:55 21.30.6 100 97 97 Qualifiers: RL - Analyte reporting limit.ND - Not detecled at the reporting limit. ENEBoY LABOBATOBIES, lNC. . 2393 Salt Creek Hrghway (82601)' PO. Box 3258 ' Caspe4 W82602 TolFree888.235.0515 . 307.235.05/5 . Fax 307.234.1639 ' casper@energylab.com'www.energylab.com QA/QC Summary Report Client: Denison Mines (USA) CorP Project SeptemberMonthly Re-Sample Report Date: 1 0/1 3/08 Work Order: C08090487 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual i Method: SW8260B Sample lD: 16-Sep-08-LCS-3 Acetone Benzere Carbon tetrachloride Chloroform Chloromethane 6+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Sun: p-Bromofl uorobenzene Surr ToluenedS Sample lD: 16Sop-08-MBLK-G Acetone Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzened4 Sun: Dibromofluoromethane Surr: p-Bromofl uorobenzene Sun: Toluene{8 Sample lDr C08090521-Oo8CMS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane 6+p-Xylenes Methyl ethyl ketone Laboratory Control Sample 93 ug/L 10 ug/L 10 ug/L 9.8 ug/L 9.9 ug/L 20 ug/L 90 ug/L 9.2 ug/L 8.5 ug/L 9.7 ug/L 9.9 ug/L 30 ug/L Method Blank ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L Sample Matrix Spike 19000 ug/L 3900 ug/L 5000 ug/L 5800 ug/L 1700 ug/L 5900 ug/L 18000 ug/L 1.0 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 93 70 102 70 103 70 98 70 99 70 101 70 90 70 92 70 85 70 97 70 99 7A 100 70100 80 96 70 98 80 100 80 Run: GCMS2_0809168 Batch: R107718 09/15/08 11:37 09/16/08 13:33 09/17108 1 1:OO 130 130 130 130 130 130 130 130 130 130 130 130 120 130 130 120 Run: GCMS2_0809168 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 100 100 100 100 '100 100 99 97 98 100 120 130 120 120 80 70 80 80 Run: GCMS2_O809168 92 70 97 70 124 70 104 70 84 70 98 70 88 70 130 130 130 130 130 130 130 Qualifiers: RL - Analyte reporting limit.ND - Not detecled at the reporting limit. ENEBCY LABORATOBIES, lNC. . 2393 Salt Creek Hrghway (8260U' P.O. Box 3258 ' Casper; WY82602 To/1 Free888.235.0515 , 307.235.0515 . Fax 307.234.1639 ' casper@energylab.com'www.energylab.com QA/QC Summary Report Glient Denison Mines (USA) CorP Project September Monthly Re-Sample Report Date: 10/13/08 Work Order: C08090487 I i Analyte Method: SW8260B Sample lD: G08090521-008CMS Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr: 1,z-Dichlorobenzene-d4 Sun: Dibromofl uoromethane Sun: pBromofl uorobenzene Sun: ToluenedS Sample lD: C08090521-008CMSD Acetone Benzen€ Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Sutr: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofl uorobenzene Sun Toluene-d8 Sample Matrix Spike 1E00 ug/L 1400 ug/L 3900 ug/L 3900 ug/L 9800 ug/L Sample Mafix Spike Duplicate 20000 ug/L 4000 ug/L 5100 ug/t 5800 ug/L 1800 ug/L 6'100 ug/L 19000 ug/L 1900 ug/L 1700 ug/L 4000 ug/L 4000 ug/L 10000 ug/L Run: GCM52_0809168 70 130 70 130 70 130 70 130 70 130 80 120 70 130 80 120 100 100 100 100 'l0o 1.0 1.0 1.0 1.0 100 100 100 100 100 't00 100 100 100 100 100 1.0 1.0 1.0 1.0 90 72 98 97 98 99 105 99 101 98 101 128 10s 90 10'l 93 94 86 100 100 101 101 103 99 100 70 70 70 70 70 70 70 70 70 70 70 80 70 80 80 130 130 130 130 130 r30 130 130 130 130 130 120 130 120 120 3.8 3 0.3 b 2.8 6.2 4.3 't7 1.8 2.9 2.4 0 0 0 0 Run: GCMS2_0809168 70 130 Batch: R107718 09/17108 11:00 09/17108 11:38 20 20 20 20 20 20 20 20 2A 20 20 10 10 10 10 12080 %REC Low Llmlt High Limit RPD RPDLimit Qualifiers: RL - Analyte reporting limit.ND - Not detecled at the reporting limit ENEBGY LAEORA1ARES, lNC. . 2393 Salt Creek HEhway (82601) ' PO. Box 3258 ' Caspet WY 82602 To11 Free888.235.0515 . 307.235.0515 . Fax 307.234.1639 ' casper@energylab.com'wwuenergylab.com QA/QC Summary Report Client Denison Mines (USA) CorP Project September Monthly Re-Sample Report Date: 1 0/1 3/08 Work Order: C08090487 Analyte Method:sw8260B Sample lD: 091708-LCS-3 Benzene Carbon tehachloride Chloroform Chloromethane 6+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzened4 Surr: Dibromofluoromethane Surr: p-Bromofl uorobenzene Surr: Toluene'd8 Sample lD: 091708-ilBLK-6 Benzene Carbon tetrachlodde Chloroform Chloromethane 6+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzened4 Sun: Dibromofl uoromethane Surr: pBromofl uorobenzene Surr: ToluenedS Sample ID: C08090521-022CMS Benzene Carbon tetrachloride Chloroform Chloromethane 6+p-Xylenes Methil ethyl ketone Methylene chloride Naphthalene o-Xylene Result Unlts Laboratory Control Sample 9.1 ug/L 9.9 ug/L 8.9 ug/L 9.0 ug/L 17 ug/L 89 ug/L 8.7 ug/L 9.1 ug/L 8.4 ug/L 8.6 ug/L 26 ug/L Method Blank ND ND ND ND ND ND ND ND ND ND ND Sample Matrix Spike 200 ug/L 23O ug/L 350 ug/L 180 ug/L 370 ug/L 2000 ug/L 190 ug/L 210 ug/L 180 ug/L Run: SATURNCA_080917470 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 80 120 70 13080 130 80 120 Run: SATURNCA-080917A Batch: R107771 09117108 11:41 09/170E 13:35 09/'18/08 07:37 ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 1.0 1.0 1.0 1.0 1.0 20 1.0 '1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 10 10 10 10 10 20 10 10 10 91 99 89 90 87 89 E7 91 84 86 86 115 104 1'.t4 98 98 80 120 105 70 130 93 80 120 94 80 120 Run: SATURNCA_0809'| 7A 102 70 114 70 111 70 92 70 93 70 99 70 94 70 104 70 88 70 130 130 130 't 30 't30 130 130 130 ,l30 RL %REC Low Limit High Limit RPD RPDLimit Qualifiers: RL - Analyte reporting limit.ND - Not detecled at the reporting limit. ENEBGYLABOBATOBIES, lNC. . 2393 Salt Creek HEhway (82601)' PO. 1ox 3258 ' Casper WY82602 Toll Free888.235.0515 . 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com'ww.energylab.com QA/QG Summary Report Client: Denison Mines (USA) CorP Project September Monthly Re-Sample Report Date: 1 0/1 3/08 Work Order: C08090487 Method:sw8260B Sample !D: G08090521{22CMS Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: ToluenedS SamplelD: C08090521{22CMSD Benzene Carbon tetrachloride Chloroform Chloromethane s1+p-Xylenes Methyl ethyl ketone Methylene chloride Naphihalene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzened4 Surr: Dibromofl uoromethane Surr: pBromofi uorobenzene Sun: Toluene-d8 RL %REC Low Limit Hlgh Limit Run: SATURNCA-0809174Sample Matix Spike 200 ug/L 550 ug/L Sample Matrix Spike DuPlicate 200 ug/L 200 ug/L 320 uS/L 190 ug/L 420 ug/L 2000 ug/L 180 ug/L 230 ug/L 200 ug/L 190 ug/L 620 ug/L 10 10 1,0 1.0 1.0 1.0 10 10 10 10 10 20 10 10 10 1o 10 1.0 1.0 1.0 1.0 70 70 70 70 70 70 70 70 70 70 70 80 70 80 80 130 130 120 130 120 120 130 130 130 130 130 130 130 130 130 130 130 120 130 120 120 2.8 14 7.7 5.1 13 1.2 3.9 11 12 3.3 13 0 0 0 0 99 70 91 70 104 80 110 70 112 80 101 80 99 100 98 96 106 98 91 116 100 96 104 97 101 108 100 Run: SATURNCA-0809174 Batch: R107771 09/18/08 07:37 09/,l8/08 08:15 20 20 20 20 20 20 20 20 2A 20 20 10 10 10 10 Qualifiers: RL - Anatyte reporting limit.ND - Not detected at the reporting limit. do ooaETo go.5a!to,ot laE.Y o.= flou Ei Eo5.X:gr=o-Ec 0'b€=.E*E .EE€b= o E9 q)bleto o TEElE.!:t E EE 8O >r= .es Ioette3ett= Ao'=.=EiEEE E<", rio- o(rar=Itr! L6E= SE H>r3.=r!==q:E E< (6 a99,P= tTEts Er3!e s. EERoo =EO\IIJE (l, eES EE Sfro -'=o#E> (Ei I.eo.9 o =-.F €5-6Lra F:O E e .Jc6toI E \s \A\s {.* :s Cx..s9,\1l\-dt EVI gffi E'IL o.s .t?E\\ g\.(0n ocoEJo'E? G\z( @l'E-\-E\oa ) t\) a\ \ $.fr\c,iM il\lILotdC!olEA(LE{-ozl6q(u-Esi() idoof3f UJ o E€)J a-)=() -s a6c(,-= s,-s \ ,,\N(sf l TC t\U()g {1 \r -{ 6tJES"b( \"Jt- E6cE-b-\i-6*\ '.Jt- E\'tre oo.9 _"/ooot Etocoo oE oo6 C.Eq oD o otr J29.o.b HE Ftt&ot- c,o EI{J oo Eoo Eoa 6 LI.9 or@Z.E - 9:EHde;e =-.D'ESoo=c-Eod€ E.>(,, gE-9 (E: 3'"(t, att )3AcS -ar/'t i.F$I 0, s) ooo u f punosurnl Hsnu [y1) punoeurnl;euop Nc\c\ \\r\ rJ* r{.o \>tr \\P \--Lt{6a(!:E-o\8 --''9 z- '-Cr cr CISHCVIIV 3=S utl- u,ttl ) il , /t/ll x >< n N s\ .Ev5 "<-6"\ \- \ =+o;:RStr{'a\-\ c otr o ocoD S o EFooo cE 6Ef!2,q ot ooooo E36-J JJc .go o c Tod GuccItE _gc EGu : vw/r )tr./7 x x X 6 /"{'!y/ r-'ry x x x 3 -!'*{u()x <L a/vlu I lll"J )'/7'lt'x x x x ><x raqlo ^esseorE X uone1a6e11- sprlogTsglog mpffi r1l $ O S AS i111y:ed,(leprues < Y.( E :,l s l*I, \\r\)\.& \: x!d\r$^t .\*)s i;\ -Y$'*.\E =G =Eoclod \\-t-ttntl@oEl, (,oo E o ELoTL trFo]Uooul o o o- !etr oE o4i;J L}-io YE olh.9. <iEi Jcs NEe < tL6 otrcLx &E oEo o'6q< 8H dC)o Z B =o oIL 5 =Eo0- uoll E @'=oot tsoo-otr coE0)trco-=o'o r-.1 v]M s LsI $/ s o Ef() S4 -J a(G Mex e= D'Sx t"- .X )o ts' 'Jo s) n,os 6aLOKii(Ja lrg F_ziru .9oE rrr -3dg2o<3a J E .-\ t,, 3 EN cl $^ ! E , <)-s 2$ E U\ \s =6 @ N o o o EHag6E=o -] o 1oo)IE(L ajEEL.oOH E9t2s9ozOP =EETTortrE -:c:oe'{= & be(E# -OL.o<at,5 -'EL(!(gE >EE'5o3gL iDB -o-noaq-1oteE.=r(EHs_<oi HHl Workorder Receipt Checklist Denison Mines (USA) Corp Energy Laboratories Inc Login completed by: Edith McPike Reviewed by: Reviewed Date: Shipping container/cooler in good condition? Custody seals intact on shipping container/cooler? Custody seals intact on sample bottles? Chain of custody present? Chain of custody signed when relinquished and received? Chain of custody agrees wilh 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: Water - VOA vials have zero headspace? Water - pH acceptable upon receipt? Yes fl Yes I ves I Yes fl Yes fl Yes M Yes M Yes fl Yes fl Yes fl 2'C On lce Yes fl Yes fl tr tilluililtiltffi uilililililil] Hillillll c08090487 Date and Time Received: 9/1112008 9:45 AM Received by: l(A/ Carrier name: Next Day Air No! No! NoE NoE NoE NoE No! No fl NoE No! NoE No fI NotPresent D Not Present EJ Not Present EJ No VOAvials submitted Not Applicable tr Contact and Conective Action Comments: None ENEBGY LABORATORIES, lNC. . 2393 Salt Creek HEhway (82601) ' P.O. &ox 3258 ' Casper WY 82602 To// Free 888.235.0515 . 307.235.0515 . Fax 307.234.1639 , casper@energylab.com . wwwenergylab.com Oate: 13-Oct-08 CASE NARRATIVE Sample Delivery The following Case Narrative contains exceptions or comments pertaining to the analysis of samples submitted by Denison Mines (USA) Corp on 9l11DOAB 09:45100. These samples were assigned ELI Workorder Number c08090487. ORIGINAL SAMPLE SUBMITTAL(S) All original sample submittals have been returned with the data package. SAMPLE TEMPERATURE COMPLIANCE: 4"C (t2.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 lhere is evidence that the chilling process has begun. GROSS ALPHA ANALYSIS Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters. Data provided by this method for non potable waters should be viewed as inconsistent. RADON IN AIR ANALYSIS The desired exposure time is 48 hours (2 days). The time delay in returning the canister to the laboratory for processing should be as short as possible to avoid excessive decay. Maximum recommended delay between end of exposure to beginning of counting should not exceed I days. SOIUSOLID SAMPLES All samples reported on an as received basis unless otherwise indicated. ATRAZINE, SIMMINE AND PCB ANALYSIS USING EPA 505 Data for Atrazine and Simazine are reported from EPA 525.2, not from EPA 505. Data reported by ELI using EPA method 505 reflects the results for seven individual Aroclors. \Mten 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-g - Energy Laboratories, lnc. - Gillette, $ff 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 NELAC: E87641; California: 02'l18CA Oregon: WY200001; Utah: 3072350515; Virginia: 00057; Washington: C1903 ISO 17025 DISCLAIMER: The resulls of this Analytical Report relate only to the items submitted for analysis. ENERGY LABORATORIES, lNC. - CASPER,\ /Y certifies that certain method selections contained in this report meet requirements as set forth by the above accrediting authorities. Some results requested by the client may not be covered under these certifications. All analysis data to be submitted for regulatory enforcement should be certified in ihe sample state of origin. Please verify ELI's certification coverage by visiting www.energylab.com ELI appreciates the opportunity to provide you with this analytical service. For additional information and services visit our web page www.energylab.com. Denison Mines (USA) Corp September Monthly Re-SamPle Group: C08090487 THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT I ENERGY LABOEATORIES,-LNL . 2393 salt creek f1qlway pp60t) , po. Box JZ1S . caspec wya260zrolt Free 808.235.0srs ' soz.les.oso ; -Fa* ibi.iii. ro1i :biii,ii6rii6yE"iro, . www.enersytab.com I I I t I I ANALYTICAL SUMMARY REPORT October 13, 2008 Denison Mines (USA) Corp 6425 S Hwy 19'l Blanding, UT 84Sl t Workorder No.: C08080664 euote lD: Project Name: 3rd euarter Groundwater C1640 - POC Wells / Monthly Groundwater Sampling r19rS1t-a9or1o1es, ln9, received tE lollor!9 r s_ymqlel tL1n Dgnison lines (USA) c_o_rp on 8/15/2008 for analysis_ /r\ Sample lD client sampte rD coflect Date Receive Date Matrix TestU *cososo6i;oo, ffi, ' r: =--ir,,,iiuisE oB/1#- -n;u";;; rr,t"tur, uy rJprrcprrrs, ooro,*oA LY - c08080664-002 MW 3 oartzoa tz:32 olliStoS Aqueous same As Above 0 - .ou9ro*totr'awsn 08112108 1'1 :55 08/15/08 Aqueous Same As Above __ *^/oe r+,15 o_-risibs aq,"o,, #j[T'g#standard List r C08080664-009 MW 19 OB/13/O8 OA,OO O Fluoridet n --::--f O) c08080664-010 MW26 0811210807:56 08/15/0e nqueour-lautrr" uv rcplrcius, DissotvedI \-/ a,ltliY,n,.,, Fluoride I Nill333l:tilltlti",o,o" Gross Alpha minus Rn222 and Uranium Solids, Total Dissolved .\_C08080664-004MW5o8/1,l/o815:0308/15/08Aqueousr,ruffi I FruorroeI \ - coaoeooo+-oo5 MWA -08/11/0816,40 0i71ro8 --tqr;"* ,-."* o, orrbplus, Dissorved t 6 -irl1'_1.'1(O - co8o8o664-oos MW 18 - - osititoe ro,i2 ogrs/o;- ' -Aqueous siru e. nu*"\, Sulfate SW826I_c08080664-0.t1 MW 60 _ SW8260B VOGs I 1 ---- c08040664-012 MW 70 0811110810:08 08/15/08 Aqueous s-ame ns noovEt1- ;ffi 1 -coeoeoou-oi iiwz2 - - oe/1il04 to:oa o8/15/o8 nqr*r" srr*nrnoove -I As appropriate, any exceptions or problems with the analyses are noted in the LaboratofAnalytical *"*i ""OA/QC Summary Report, or the Case Narative. lf you have any questions regarding these tests results, please call.I I I t ReportApproved By: $tp*; p^xar.y Summary Report: Page 1 of . ENEfrGY LA&onAroBFj:-tlrg: . zsg7 sa/t creek Highway (82601) . po. Box J2s8 . casper wy a2602ro// Free 888.235.0srs - soz.iei.oir{:-ri i:oi.iii i;i'i :;;;;;;dr;;;y;';"", . wwu.enersytab com LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080664-001 MW1 Report Date: 10/13/08 Collection Date; 08/12108 15:2S DateReceived: 08/'l 5/08 Matrix: Aqueous MCU RL OCL MethodResult Units I I I I I I T I I METALS. DISSOLVED Manganese I I I I I I t I I I Analysis Date / By 10 E200.8 08/28/08 04:49 / ts Report Definitions: RL - Analyte reporting limit. QCL - Quality control timit. MDC - Minimum detectable concentration MCL - Maximum contaminant level, ND - Not detected at the reporting limit. t ENERGY LABOBATOfr1ES, tNC. . 239J Salt Creekbl/Free888.215.05t| . A07.fui.056 : Fi ibr';ii. . 2393 Sat Creek Hiohwav (8260/) . p.O. Box J2i8 , Casper; Wy A2602t5 . Fax Joz.zl4. robs . 'dspiideiirsyE:;io;: wiw,enersytab.conToll Free 888.235.051 5 . A07. I I t LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080664-002 MW3 Revised Date: Report Date: Collection Date: DateReceived: Matrix: 11t26108 10/13/08 0811210812:32 08/15/08 Aqueous Analyses Result Units Qualifier tucu QCL Method Analysis Date / ByI I t I t t I I I I I t I I I METALS - DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury MolyMenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc ND ug/L ND ug/L 0.73 ug/LND ug/L ND ug/LND ug/L ND ug/LND ug/L 960 ug/LND ug/L ND ug/LND ug/L 19.2 ug/L ND ug/L0.85 ug/LNO ug/L 28.5 ug/LND ug/L 21 ug/L 5.0 0.50 0.s0 25 10 10 30 1.0 10 0.50 10 20 5.0 10 0.s0 100 0.30 15 '10 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E.200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 08/28/08 04:56 / ts 08128108 04:56 / ts 08128108 04:56 / ts 08128108 04:56 / ts OBl28l08 04:56 / ts 08128108 04:56 / ts 11125t0812:30 I cp 08128108 04:56 / ts 08n8rc8 04:56 / ts 08/28/08 04:56 / rs 081281A8 04:56 / ts 08/281/08 04:56 / ts 08/28/08 04:56 / ts 11125108 12:30 I cp 08128108 04:56 / ts 08128/08 04:56 / ts 08/28/08 04:55 / ts 08/2A08 04:56 / ts 08128108 04:56 / ts Report Definitions: RL - Analyte reporting limit. QCL - Quality control timit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. I ENEfrGY LAEORATORIES' lNC. ' 2393 Salt Creek Hig-hway (82601) , EO. Box 32i8 . Caspet Wy A2602Toll Free 888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 . cisperAitenergylab.con . wwwehergy/aO.:com- I I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Qua(er Groundwater c08080664-003 MW 3A Revised Dale: 11i26108 Report Date: 10/13/08 Collection Date: 08/12108 11:55 DateReceived: 08/15/08 Matrix: Aqueous Analyses Result Units Qualifier RL MCUQCL Method Analysis Date / By I t t t t I I t I I I I I t I METALS - DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc ND 2.04 2.14 ND ND ND ND ND 263 ND ND 21 94.3 NO 0.99 ND 19.0 ND 72 ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 5.0 0.50 0.50 25 10 't0 30 1.0 10 0.50 10 20 5.0 10 0.50 't00 0.30 15 '10 E200.8 E200.8 8200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 8200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 08/28/08 05:03 / ts 08/28/08 05:03 / ts 08/28/08 05:03 / ts 08/28108 05:03 / ts 08/28/08 05:03 / ts 08/28/08 05:03 / ts 11125108 12:35 I cp 08/28/08 05:03 / ts 08/28/08 05:03 / ts Ogl28l08 05;03 / ts OBl28l08 05:03 / ts 08/28108 05:03 / ts 08/28/08 05:03 / ts 11t25108 12135 t cp 08128108 05:03 / ts 08128108 05:03 / ts 08128108 05:03 / ts 08/28/08 05:03 / ts 08128108 05:03 / ts Report RL - Analyte reporting limit.Definitions: eCL - euality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit ENEFGY tqBoRAToRrEs,_rNc: . zigi salt creek Highway (8260r) . po. Box szsS , caspet; wyaz602ro// Free 888.235.0515 ' 30z.ias.oso-: ni i'oiiii. iiiSi '7r)IiZiai"ii6y1ff"b, . wwwenersytab.com LABOMTORY ANALYTICAL REPORT Client: Project; Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080664-004 MW5 Report Date: 10/13/08 Collection Date: 08/I1l08 1S:03 DateReceived: 08/1Sl08 Matrix: Aqueous Result Unlts Qualifler RL MCUQCL Merhod I I t I t I I I I I I I I I I I I I MAJOR IONS Fluoride METALS. DISSOLVED Manganese 1.0 mgiL 298 ug/L 0.1 10 A4500-F C 08/'18/08 17:59 I tjt E200.8 08128t08 05:09 / ts Report Rt - nnatyte reporting limit.oeflnitions: eCL - eualiry controt limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit I Analysis Date / By MDC - Minimum detectable concentration ENEf,GY LABofrAToRtEs,_rNc . 2J9J salt creek l1g^rlway (s26ot) . p.o. Box s2i8 . casper wy B2602To// Free 888.215.osts . soz.ies.oirc-: ni ibiiii.i6Js .'casper@energyab.com . wwwenergytab.com LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080664-005 MW 12 Report Oate: 10/13/08 Collection Date: 0E/11/08 16:40 DateReceived: 08/15/08 Matrix: Aqueous Result Units Qualifier MCUQCL Method Analysis Date / By I T t I I t I t I I I I I t t I t I I METALS. DISSOLVED Manganese Uranium 19 17.8 10 0.30 ug/L ug/L E200.8 E200,8 08128108 05: 16 / ts 08128/08 05:16 / ts Report Definltions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. t ENERGY LABoRAToRIE_s,-lNc . 2J9J salt creek Highway (8260r) . po. Box Jzid . caspec wy g2602To// Free 888.235.0515 ' 307.i35-OStS-, rai ibZ.iii. ioss , casper@mergyhi'com . wwrenergyrab.com t I t Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT / Denison Mines (USA) Corp / 3rd Quarter Groundwater /co8o8o664-Oo6 l/ MW 15 Report Date: 10/13/08 Collection Date; 08/12108 08:30 DateReceived: 08/1Sl08 Matrix: Aqueous Analyses Result Units MCUQualifier RL QCL Method Analysis Date / By E200.8 E200.8 5.0 0.30 1 18 ug/L45.7 ug/L I I I I t I I I I t I I I I t METALS. DISSOLVED Selenium Uranium 08l28tOA 05:23 / ts 08/28/08 05:23 / ts Report Definitions: RL - Analyte reporting timit. QCL - Quality control timit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. ENERGY LABoRAToRF-s:^tltg: '_239J sart creek llqtlway (sz60t) . po. Box J2i8 . casper w s2602To// Free 888.235.0sts ' soz.lss.osrc-:-Fi3bi5ii. roli :d"iiidrii6y?ff"o. . www.enersytab.com LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080664-007 MW 17 Report Date: Collection Date: DateReceived: Matrix: "10/1 3/08 08112t0810:52 08/15/08 Aqueous Analyses MCU QCL MethodQualifier RL Analysis Date / By 0.50 0.30 0.55 ug/L28.9 ug/L I t I I I I I I I I t I I I I I I T I METALS. DISSOLVED Thallium Uranium E200.8 E200.8 fVfCf- - fvfaximum contaminant level. ND - Not detected at the reporting limit 09/05/08 06:03 / smt 09/09/08 17:05 / ts RL - Analyte r€porting timit. QCL - Quality controt limit. MDC - Minimum detectable concentration Report Definitions: I ENERGY LABOBATORIE-S!-I4IC '_2393 Salt Creek Highway (82601) . P.O. 1ox 32i8 . Casper Wy A2602Totl Free 888.23i.051s , s0z.2gi.0s/5 . Fax a0z2g4. rc3e , 'dspiiaienergyEi.'ion . wwi.iiirbyao.coi- t I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080664-008 MW 18 Revised Date: Report Date: Collection Date: DateReceived: Matrix: 11t26t08 10t13108 OBll2lO810:12 08/1 5/08 AqueoustMCUQualifier RL QCL MethodResult Units Analysis Date / By E200.8 E200.8 E200.8 10 0.50 0.30 136 ug/L 1.33 ug/L41.4 ug/L I I I t I I I t I t I I I I T METALS. DISSOLVED Manganese Thallium Uranium 09/05/08 06:24 / sml 09/05/08 06:24 / sml 09/09/08 17:12 I ts Report Definitions: RL - Analyte reporting timit QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit.MDC - Minimum detectable concentration t ENERGY LABaBAToR1ES, tNC. . 2J9J salt creek Highway (sz60t) . p.o. Box J2s8 . casper, wyap602Tolt Free 888.235.0515 ' 307.235.0irs-' ni ibi.iii.iiiSi :U"iZidriiisyEi;i, .www:enersytab.com I I I LABOMTORY ANALYTICAL REPORT Client Denison Mines (USA) CorpProject 3rd euarter Groundwater Lab lD:c08080664-009 Client Sample 'r_ _l* ,n Analyses Resutt Units Qualifior RL Matrix: Method MCU ocL Report Oate: Collection Date: DateReceived: 1 0/1 3/08 08/13/08 08:00 08/1 5/08o::*': Analysis Date / ByI I I I t I I I I I I I I I I MAJOR IONS Fluoride METALS. DISSOLVED Selenium Thallium Uranium 1.1 0.1 9.2 ug/LND ug/L 6.80 ug/L E200.8 E200.8 E200.8 MCL - Maximum contaminant level. ND - Not detected at the reporting limit. A4500-F C 08/1S/08 1802 t t1t 09/05/08 06:30 / smt 09/05/08 06:30 / smt 09/09/08 19:07 / ts 5.0 0.50 0.30 Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration I ENEfrGy LAAORATORIES, rNC. . 2393 Sart Creek Hlqlway (82601) . po. Box 3258 . Caspq wy82602TollFree888.235.0515 ' 307.235.056-: Fai ibi'iii.ioss - casper@energytab.com. www.enersytab.com I I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: "*":",no:_"_:o' Analyses Denison Mines (USA) Corp 3rd Quarter Groundwater c08080664-01 0 MW 26 Report Date: 10/13/08 Collection Date: 08/12108 07:56 DateReceived: 08/18/08 Matrix: Aqueous Rosult Units Qualifier MCU QCL MethodRL Analysis Date / By gCrlL pCi/L pCi/L ,l I I I I t I I I I I I I I I I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate PHYSICAL PROPERTIES pH Solids, Total Dissotved TDS @ ,EO C ND mg/L388 mg/L 522 mg/L 50 mg/L0.3 mg/L 169 mg/L 0.3 mg/L0.26 mg/L 10.3 mg/L220 mg/L 2020 mg/L 6.95 s.u. 3170 mg/L ND ug/L ND ug/L ND ug/LND ug/LND ug/L ND ug/L 1120 ug/LND ug/L 1 180 ug/L ND ug/L NO ug/LND ugil ND ug/L ND ug/L ND ug/LNO ug/L27.1 ug/L ND ug/L10 ug/L 3.4 0.7 0.5 1 1 0.52 1 0.1 0.50 0.1 0.05 0.50 3.8 30 0.01 10 5.0 0.50 0.50 25 10 10 30 1.0 10 0.50 '10 20 5.0 10 0.50 100 0.30 15 10 A2320 B 42320 B E200.7 A4500-Ct B A4500-F C E200.7 E350.1 E353.2 E200.7 E200.7 A4500-SO4 E 08/19/08 12:01 I tjt 08/19/08 12:01 I tjt 09/03/08 16:11 I cp 08121108 10:38 / sp 08/18/08 18:13 / tjt 09/03i08 16:11 /cp 08/18/08 15:13 / eti-b 08/18/08 14:45 I eLb 09/03/08 16:11 /cp 09/03/08 16:'11lcp 08121108 12:17 ljat A4500-H B 08/16/08 1S:SZ t jah 42540 C 08/16/08 I6:39 /jah METALS. DISSOLVED Arsenic Beryllium Cadmium Chromiurn Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U precision (t) Gross Alpha minus Rn & U MDC Report Definitions: E200.8 E200.8 E200.8 E200.7 E200.7 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.6 E900.r E900.1 E900.1 09/05/08 06:37 / smt 09/09/08 19:14 / ts 09/05/08 06:37 / smt 09/03/08 16:1I /cp 09103/08 16:11 /cp 09/05/08 06:37 / smt 09/03/08 16:11 /cp 09/05/08 06:37 / smt 09/03/08 16:11 I cp 09/05/08 06:37 / smt 09/05/08 06:37 / smt 09/05/08 06:37 / sml 09/05/08 06:37 / smt 09/05/08 06:37 / smt 09/05/08 06:37 / smt 09/05/08 06:37 / sml 09/09/08 19:14/ts 09/05/08 06:37 I smt 09/05/08 06:37 / smt 09/08/08 l3:30/crw 09/08/08 13:30 / crw 09/08/08 13:30 / crw RL - Analyte reporting lirnit. QCL - Quality control limit. MDC - Minimum detectable concentration ft4Cf - Uf rrirri contaminant levet. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference. I ENEFGY LABOBATORIES, INC ' 2393 Salt Creek Hlg_Qway (52601) , PO. Box 3258 . Caspet Wy A2602To//Free888.235.0515 ' 307.235.0515 ' Fax s07.2s4.toii :bb{pirdeiiriyEii.'iom. wwuenersytab.com I I I LABORATORY ANALY}ICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080664-010 MW 26 Report Date: 10/13/08 Collectiqn Date: 08/12108 07:56 DateReceived: 08/1 5/08 Matrix: Aqueous Analyses Result Units Qualifior RL MCU QCL Method Analysis Date / By I I I I t I I I I I I I I I I DATA OUALITY A/C Balance (i 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0,80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichloroethaned4 Surr: Oibromofluoromethane Surr: pBromofluorobenzene Surr: Toluene-d8 - The sample was received in the laboratory with a pH > 2. The DH was 3 -0.002 0/o 49.8 meq/L49.8 meq/L 3190 mg/L 0.990 ND ug/LND ug/L ND ug/L 1300 ug/L ND ug/LND ug/L84 ug/L NO ug/L ND ug/L ND ug/L 108 %REC'114 ToREC 101 %REC 1O7 %REC 20 1.0 1.0 100 1.0 20 10 1.0 1.0 1.0 70-1 30 77-126 76-127 79-122 Calculation Calculation Calculation Calculation Calculation SW826OB SW82608 SW826OB SW826OB SW82608 sw8260B sw8260B SW826OB sw8260B sw8260B sw8260B SW826OB sw8260B SW82608 09/09/08 16:45 / sdw 09/09/06 16:45 / sdw 09/09/08 16:45 / sdw 09/09/08 16:45 / sdw 09/09/08 16:45 / sdw 08123t08 20:'lE / eli-b 08/23108 20:18 / eti-b 08123t08 20:18 / eli-b OBl24lOB 12:41 I eli-b 08/23/08 20:18 i eli-b 08123108 20:18 / eli-b 08124108 14:07 I etr-b 08/23/08 20:18 / eli-b OBl23l08 20:18 / eli-b 08123108 20:18 / eli-b 08/23/08 20:18 / eli-b 08/23/08 20:18 / eli-b 08123t08 20:18 i eli-b 08/23/08 20:18 / eli-b Report Definitions: RL - Analyte reporting limit. QCL - Quality cont(ol timit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit I ENERcv LABoRAroEtEs!-rlvg: ' 2J9s salt creek flqlway (s260/) . p.o. Box JZilS , casper, w az60zTo// Free 888.215.osts ' soz.zes.oirc-:-Fi ibi.iii.i639 . casper@energylab.com , wmaenergylab.com I I I LABOMTORY ANALYTICAL REPORT Client: Project: Lab lD: Client SlmRte tD: Analyses Denison Mines (USA) Corp 3rd Quarter Groundwater c08080664-0.t 1 MW 60 Report Date: 10/13/08 Collection Date: 08/13/0g 14:15 DateReceived: 08/1Sl08 Matrix: Aqueous Result Units Qualifier MCU QCL MethodRL Analysis Date / By pCi/L pCi/L pCi/L I I I I I I I I I I T I I I I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium Chtoride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate PHYSICAL PROPERTIES pH Sotids, Total Dissolved TOS @ 1gO C METALS - DISSOLVED Arsenic Beryllium Cadmium Chromium' Cobalt i copper I ton J Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thaltium Tin Uranium Vanadium Zinc I RADTONUCLTDES - DISSOLVED .i Gross Alpha minus Rn & U ., I Gross Alpha minus Rn & U precision (r)V' Gross Alpha minus Rn & U MDC ND 1 0.77 ND ND ND ND ND ND ND 1 7.10 ND ND ND ND ND ND NO ND ND ND ND ND ND ND ND ND ND ND ND ND 0.5 0.4 0.5 mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L s.u. mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 1 1 0.50 1 0.1 0.50 0.1 0.0s 0.50 0.76 1 0.01 10 5.0 0.s0 0.50 25 10 10 30 1.0 10 0.50 10 20 5.0 10 0.50 100 0.30 15 10 E200.8 E200.8 E200.8 E200.7 E200.7 E200.7 E200.7 E200.8 E200.7 E200.8 E200.7 E200.7 E200.8 8200.7 8200.8 E200.8 E200.8 E200.8 e200.7 E900.1 E900.1 E900.1 42320 B A2320 B E200.7 44500-ct B A4500-F c E200,7 E350.1 E353.2 E200.7 E200.7 A4500-SO4 E 08/1 9/08 12:06 I tjt 08/19/08 12:06 I tjt 09/03/08 16:15/cp 08121108 10:40 / sp 08/1 8/08 1 8: 16 / tjt 09/03/08 16:15/cp 08/18/08 15:17 I etr-b 08/18/08 14:46 / eti-b 09/03/08 16:15 / cp 09/03/08 16:15 / cp 08l21lOA 12:19 I tat A4500-H B 08/16/08 15:53 /jah A2540 C 0E/16/08 16:40 / lah 09/05/08 06:44 / smt 09/09/08 19:21 /ts 09/05/08 06:44 / sml 09/03/08 16:15/cp 09/03/08 16:15 / cp 09/03/08 16:15 / cp 09/03/08 16:15/cp 09/05/08 06:44 / smt 09/03/08 16:15/cp 09/05/08 06:44 / smt 09/03/08 16:15/cp 09/03/08 16:15/cp 09/05/08 06:44 / smt 09/03/0E 16:15/cp 09/05/08 06:44 / smt 09/05/08 06:44 / sml 09/09/08 19:21 /ts 09/05/08 06:44 / smt 09/03/08 16:15/cp 09/08/08 13:30 / cniv 09/08/08 13:30 / cnirr 09/08i08 13:30/crw Report Definitaons: RL - Analyte reporting limit. QCL - Quality control timit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference. I ENERGY LAaoRAToRtE-s!_t!19: ' 2J9J salt creek ylg^lway (sz60t) . po. Box J2s8 , caspec wyaz602To//FreeBSS.zJS.osts'soz.isg.oirc-:-iiibiiii.i6J9. casper@energylab.com.www.enersytab.com I I I LABORATORY ANALYTTCAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080664-01 1 MW 60 Report Date: 10/13/08 Collection Date: 08/13/OB 14:15 DateReceived: 08/15/08 Matrix; Aqueous Analyses Result Units Qualifier MCU QCL Method Analysis Date / ByI I t I I I I I I t I I I I I DATA QUALITY A/C Balance (r 5) Anions Cations VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon telrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichloroethane{4 Surr: Dibromofl uoromethane S urr: p-Bromofluorobenzene Surr: Toluene-d8 -1.18 0.051 0.050 ND ND ND t9 ND ND ND ND ND ND 105 112 99.0 108 Yo meq/L meq/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L %REC %REC %REC %REC 20 1.0 1.0 2.0 1.0 20 1.0 1.0 1.0 1.0 70-1 30 77-126 76-127 79-122 SW826OB sw8260B SW826OB SW826OB SW82608 SW826OB SW826OB sw8260B SW826OB SW826OB SW826OB sw82608 sw8260B sw8260B Calculation 09/09/OB i 6:46 / sdw Calculation 09/09/08 16:46 / sdw Calculation 09/09/OB t6:46 / sdw 08123t08 20:46 / eti-b 08123108 20:46 / etib 08123108 20:46 I ei.b 08t24108 13:10 / eli-b Ogl23l08 20:46 / eti-b 08/23/08 20:46 I eti-b 08/23108 20:46 I eli-b 08/23108 20:46 I eti-b 08123108 20:46 / eti-b 08l23lOA 20:46 / eil-b 08123108 2O:46 I eti-b 08123108 20:46 I eti-b 08/23/08 20:46 / eli-b 08123108 20:46 / eti-b RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. t ENEBOY LABORATORTE_S!-|\VQ: . 2J9J Satt Creek Hlqlway (5260/) .pO. Box JZilS . Caspet WyB2602ro// Free 888.235.0515 ' 307.i3s.05$-;-i;3b;:i;; ioSi .-diiiiairiifiyfi"iro, . wwwenersytab.com I I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080664-01 2 MW 70 Report Date: 10/1 3/08 Collection Date: 0B/1 1/08 10:0g DateReceived: 0B/1Sl08 Matrix: Aqueous Rosult Units MCUAnalyses Analysis Date / ByQualifierRLQCL i,rethod T I t I t I I t t I T I I I I lr Gross Alpha minus Rn & U / Gross Atpha minus Rn & U precision (r)t/ Gross Alpha minus Rn & U MDC MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3' calciu, Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ 1SO C METALS - DISSOLVED ND mg/L 484 mg/L 503 mg/L 57 mg/L2.9 mg/L 1070 mg/L 0.2 mg/L 4.04 mgtL 24.2 mg/L 259 mg/L 5490 mg/L 6.28 s.u. 7590 mg/L ND ug/L ?.44 ug/L 84.1 ug/L ND ug/L 277 ug/L ND ug/L ND ug/LND ug/L 32800 ug/LND ug/L 246 ug/L137 ug/L 1O.7 ug/LND ug/L 1.13 ug/LND ug/L 54.4 ug/L ND ug/L542 ug/L 4.0 pCUL 0.8 pCitL o'5 PcilL 1 1 1.0 1 0.1 0.50 0.1 0.05 0.50 7.6 100 0.01 10 5.0 0.50 0.50 25 10 10 46 1.0 10 0.50 10 20 5.0 10 0.50 100 0.30 15 10 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 8200.8 E200.8 E200.8 E200.8 8200.8 E200.8 E900.1 E900.1 E900.1 423208 42320 B E200.7 A4500-ct B A4500-F c E200.7 E350.1 E353.2 E200.7 E200.7 44500-504 E 08/19/08 12:11 I ttt 08/19/08 12:11 I tjl 09/03/08 16:23 I cp 08/21l08 10:42 I sp 08/1 8i08 18:26 I tjt 09/03/08 16:23 I cp 08/18/08 15:18/eli-b 08/'18/08 14:47 I ett-b 09/03/08 16:23 I cp 09/03108 16:23 I cp 08l21lOB 12:25 I iat A4500-H B 08/'16/08 t5:56 / jah 42540 C 08/16/08 16:40 /jah Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIONUCLIDES - DISSOLVED Report Definitions: 09/05/08 06:51 / smt 09/09/08 19:28 / ts 09/05/08 06:51 / smt 09/03108 16;23 / cp 09/05/08 06:51 / smt 09/05/08 06:51 / smt 09/03/08 16:23 I cp 09/05/08 06:51 / smt 09/03/08 16:23 t cp 09/05/08 06:51 / smt 09/05/08 06:51 / smt 09/05/08 06:51 / srnt 09/05/08 06:51 / smt 09i05/08 06:51 / smt 09/05/08 06:51 / smt 09/05/08 06:51 / smt 09/09/08 19:28 / ts 09/05/08 06:51 / sml 09/05/0E 06:51 / smt 09/08/08 13:30 / cnrv 09/08/08 13:30 / cnrv 09/08/08 13:30 / crw RL - Anatyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference MDC - Minimum detectable concentration I ENERGY LABORAT0REa tNC. . 2393 sar creek HlqQway (az60t) , p.o. Box J2i8 , casper, wr8z60eTolt Free 888'235.0515 ' 307.235.0515 ' Fax soz.iit. toii :"iipii6riiisyrr:1;'com . www:energytab.com I t I LABORATORY ANALYTICAL REPORT Client: Proiect: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080664-012 MW 70 Report Date: 10/13/08 Collection Date: 08/1 1/08 10:08 DateReceived: 08/15/08 Matrix: Aqueous Analyses Result Units Qualifier RL MCUQCL Method Analysis Date I By I I t I T t I I I I I I DATA QUALITY /' NC Balance (t 5) ./ Anions / cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS ,. Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl othyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichloroethaned4 Surr: Dibromofl uoromethane Surr: p-Bromofl uorobenzene Surr: Toluene-dB ItI I] 0.184 %124 meq/L 125 meq/L 7660 mg/L 0.990 ND ug/L ND ug/L ND ug/L ND ug/L ND ug/LND ug/LND ug/L ND ug/LND ug/L ND ug/L106 ToREC 112 %REC 99.0 %REC 106 %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 70-r 30 77-126 76-127 79-122 Calculation Calculation Calculation Calculation Calculation SW826OB SW826OB sw82608 sw8260B SW826OB SW8260B SW826OB SW82608 sw8260B sw8260B SW8260B sw8260B sw8260B SW826OB 09/09/08 16:47 I sdw 09/09/08 l6:47 / sdw 09/09/08 16:47 / sdw 09/09/08 16:47 / sdw 09/09/08 '16:47 / sdw 08123108 21 :1 5 / eli-b 08123105 21 :1 5 i eli-b 08/23/08 21 :1 5 / eli-b 08123108 21:15 I eli:b 08/23/08 21:15 t eli-b 0812310821:15 lelt-b 08/23/0E 21:15 I eli-b 08123108 21 :1 5 / eli-b 08123108 21:15 I elt-b 08/23108 21'.151 eli-b 08/23/08 21:15 I eh-b 08i23/08 21 :1 5 / eli-b 08/23/08 2'l:15 1 eh-b 08123108 21 :15 / eli-b- The sample was received in the laboratory with a gH > Z. The pH was 7 I I t Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the repoding limit. I ENERGY LABOfrATORIES, lNC. ' 2393 Satt Creek Higllway (s2601) . PO. Box J2i8 . Casper, Wy a2602To// Free 888.215.0st5 . s07.z?5.0sts . Fax szz.zo4. rois :dii,iid"iiicyi;;i, . www.enersytab.com I I t LABORATORY ANALYTTCAL REPORT Client: Project: Lab lD: Client Sample lD: Analyses Denison Mines (USA) Corp 3rd Quarter Groundwater c08080664-01 3 J\4W 20 Report Date: 't0/13/08 Collection Date: 0811 1/08 11:08 DateReceived: 08/15/08 Matrix: Aqueous Result Units Qualifier MCUQCL Method Analysis Date / By pCi/L pCi/L pCi/L I I J I I I I t I I I I t I I t I I MAJOR IONS Carbonate as CO3 Bicabonate as HCO3 Calcium Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nikite as N Potassium Sodium Sulfate PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ lS0 C METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uraniurn Vanadium Zinc RADIONUCLIDES - DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U precision (i) Gross Alpha minus Rn & U MOC ND mg/L 386 mg/L388 mg/L 57 mg/L 0.2 mg/L 110 mg/L0.5 mg/L 4.16 mg/L 50.3 ms/L 1430 mg/L 3910 mg/L 7.37 s.u. 5650 mg/L ND ug/L ND ug/LND ug/L ND ug/LNO ug/L ND ug/L ND ug/L ND ug/L 60 ug/L ND ug/L 11 ug/LND ug/L ND ug/LND ug/L ND ug/LND ug/L 29.8 ug/L ND ug/L90 ug/L 1.3 0.5 0.5 42320 B 42320 B E200.7 A4500-cr B A4500-F C E2AO.7 E350.1 E353.2 E200.7 E200.7 A4500-SO4 E 1 1 1.0 1 0.1 0.50 0.1 0.05 0.50 7.6 100 0.01 10 5.0 0.50 0.50 25 10 10 46 1.0 10 0.50 10 20 5.0 10 0.50 't 00 0.30 15 10 A4500'HB 08/16/0815:59/jah A2540 C 08/16/08 16:41 t jah 08/1 9/08 12:18 t tjt 08/19/08 12:18 I \l 09/03/08 16:27 I cp 08121108 12:50 / sp 08/18/08 18:29 / ljl 09/03/08 '16'.27 t cp 08/18/08 15:19 / eli-b 08/18/08 14:48 / eli-b 09103/08 16:27 I cp 09/03/08 16:27 I cp 08t21108 13:09 / jal 09/05/08 06:58 / sml 09/09/08 19:35/ts 09/05/08 06:58 / sml 09/03/08 16:27 t cp 09/05/08 06:58 / sml 09/05/08 06:58 / sml 09/03/08 '16:27 I cp 09/05/08 06:58 / sml 0S/03/08 16:27 I cp 09/05/08 06:58 / sml 09/05/08 06:58 / sml 09/05/08 06:58 / sml 09/05/08 06:58 / smt 09/05/08 06:58 / sml 09/05/08 06:58 / sml 09/05i08 06:58 / sml 09/09/08 19:35/ts 09/05/08 06:58 / sml 09/05/08 06:58 / sml 09/08/08 13:30 / cniv 09/08/08 13:30/crw 09/08/08 13:30 / crw E200.8 E200.8 E200.8 E200.7 E200.E E200.6 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.E E200.8 8200.8 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference I ENEncY LABoRAroBEs, lNc ' 2J9J salt creek liqtlway pzoot) . p.o. Box Jzsa . caspe4 wy a2602Toll Free888.23s.0it5 , g2z.zgs.oss : Fai ibi.ieifioe . casper@energytab.com, www.energytab.com I I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080664-013 MW 20 Report Date: 10/13/08 Collection Date: 08/1 1/08 11:08 DateReceived: 08/15/08 Matrix: Aqueous Analyses Result Units Qualifier RL MCUQCL Method Analysis Date / ByI T t I I I I I I I t I /,'DATA QUALTTY / NC Batance (x s)/ Anions V cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichloroethane-d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: Toluene-d8 1.16 89.7 91.8 6170 0.920 % meq/L meq/L mglL Calculation Calculation Calculation Calculation Calculation sw8260B SW826OB SW626OB SW8260B sw8260B SW8260B sw8260B SW8260B sw8260B SW82608 SWE26OB SWE26OB SW826OB sw8260B 09/09/08 16:47 I sdw 09/09/08 16:47 / sdw 09/09/06 16:47 / sdw 09/09/08 16:47 / sdw 09/09/08 16:47 / sdw 081231082'l:43 I eti-b 08/23/08 21:43 I elt-b 06/23108 21:43 I elirb 0812310821:43 I eti-b 08/23/08 21:43 I ett-b 08/23/08 21:43 / eli-b 08/23/08 21:43 I eti-b 08/23/08 21:43 I eli-b 08123108 21 :43 I eli-b 0812310A 21:43 I elr-b 08/23/08 21:43 I elt-b 08/23/08 21:43 / eli-b 08/23/08 21:43 / eli-b 08123108 21:43 I eli-b ND ug/LND ug/LND ug/L ND ug/L ND ug/LND ug/L ND ug/LND ug/L ND ug/LND ug/L 109 %REC112 %REC92.0 %REC108 %REC 20 1.0 1.0 1.0 1.0 20 1.0 't.0 1.0 1.0 70-1 30 77-126 76-127 79-122 The sample was received in the laboratory with a pH > 2. The pH was 4 I I I Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit I ENERGY LAEoRAToRtEs, lNC. '2393 Salt Creek Hig^Qway (s2601) . Po. Box JZ1S . Caspec Wya260zToll Free888.235.0515 . 307.i35.0ss ; rai ibi.'i:ii.fise , casper@energytab.com.vww.energytab.com t I I LABOMTORY ANALYTICAL REPORT Client Denison Mines (USA) Corp ,fProject 3rd Quarter Groundwater / Lab lD: C08080664-014 l/Client Sample lD: MW 22 Report Date: 10/13/08 Collection Date: 08/1 1/08't0:08 DateReceived: 08/1Sl08 Matrix: Aqueous Analyses Result Units Qualifier RL MCUQCL Method Analysis Date / By pCi/L pCilL pCi/L t I I t I I I I I I I t I I I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ 1gO C METALS. DISSOLVECI _,'Arsenicj Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Atpha minus Rn & U precision (r) Gross Alpha minus Rn & U MDC ND 489 499 58 2.9 1080 0.2 3.83 24.9 2s9 5870 6.27 7620 ND 2.69 81.8 NO 264 ND ND ND 32500 ND 233 135 9.8 ND 1.04 ND 46.7 ND 524 3.1 0.7 0.5 mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mdL mg/L mgiL 5.U. mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 1 1 1.0 1 0.1 0.50 0.1 0.05 0.50 7.6 100 0.01 10 5.0 0.50 0.50 25 10 10 46 1.0 10 0.50 10 20 5.0 10 0.50 100 0.30 15 10 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.E E200.8 E200.8 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 A2320 B 42320 B E200.7 A4500-Ct B A4500-F C E200.7 E3s0.1 E353.2 E200.7 E200.7 A4500-SO4 E A4500-H B 08/16/08 16:O2 I jah 42540 C 08/16/08 16:41 I iah 08/19/08 12:24 I \t 08/19/08 12:24 njt 09/03/08 17:16 I ca 08121108 13:03 / sp 08/18/08 18:33 / ljl 09/03/08 17:16 I cp 08/18/08 15:20 / eli-b 08/18/08 14:49 / eli-b 09/03/08 17'.16 t cp 09/03/08 17:16 I cp 08t21108 13:05 / lat 09/05/08 07:32 / smt 09/09/08 '19:41 / ts 09/05/08 07:32 / sml 09/03/08 17:16 t cp 09/05/08 07:32 / smt 09/05/08 07:32 I smt 09/03/08 17:16 t cp 09/05/08 07:32 / smt 09i03i08 17:16 I cp 09/05/08 07:32 I smt 09/05/08 07:32 / sml 09i05/08 07:32 I srr't 09/05/08 07:32 / smt 09/05/08 07:32 / smt 09/05/08 07:32 I sml 09/05/08 07:32 / smt 09/05/08 07:32 I smt 09105i08 07:32 / sml 09/05i08 07:32 I smt 09/08/08 13:30 / crw 09/08/08 l3:30/crw 09/08/08 13:30/cnry RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference t ENERQY LABoRAroBEs, qvc . zsg? sat creek Highway (8260/) . po. Box J2i8 . caspet wy a2602roltFree888.235.0515 ' s07.235.05rs . Fai ibi.iit.ioii :rAiiZiai"iiidyhffio*,www.enersytab.com MCUUnits euatifier RL ecL I I I I I T I I I I I I I I I I I I Client: Project: Lab lD: Client Sample tD: Denison Mines (USA) Corp 3rd Qua(er Groundwater c08080664-014 MW 72 LABORATORY ANALYTICAL REPORT Result Report Date: Collection Date: DateReceived: ':I,.' Method 1 0/1 3/08 08/1 1/08 '10:08 08/1 5/08 Aqueous Analysis Date / By Analyses DATA QUALTTY A,/C Balance (r 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANTC COMPOUNDS Acetone -2.64 132 126 8060 0.950 o/o meq/L meq/L mg/L Calculation Calculation Calculation Calculation Calculation SW826OB sw8260B SWE2608 sw82608 SW826OB sw8250B SW82608 SW826OB SW826OB SW826OB SW826OB SW826OB sw8260B SW8260B 09/09/08 16:48 / sdw 09/09/08 16:48 / sctw 09/09/06 16:48 / sdw 09/09/08 16:48 / sdw 09/09/08 16:48 / sdw 0812310822:11 Ieli-b 08123108 22:11 I eti-b 08123108 22:11 t etib 08/23/08 22:11 I etit-b 08/23/08 22:11 I eLb ABl23lOg 22:11 I eti-b 0812310822:11 I ell.b 08/23/08 22:11 I el.b 08/23/08 22:11 I ett-h 08/23108 22111 I eti.b 08/23/08 22:11 I etr-b 0812310822:11 IeLb 08123108 22:11 I eti-b 08123108 22:11 t ett-b /Bunr"n" f CarOontetrachloride / ChloroformII I ChloromethaneV Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichloroethane-d4 Surr: Dibromofluo.omethane Surr: p-Bromofluorobenzene Surr: Toluene-d8 Report Definitions: - The sample was received in the laboratory wjth a pH > Z. The pH was 6. ND ug/L NO ug/LND ug/L ND ug/LND ug/LNO ug/L ND ug/LND ug/LND ug/L ND ug/L 105 %REC 110 %REC 101 %REC105 %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 70.1 30 77-126 76-127 79-122 RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level, ND - Not detected at the reporting limit, I ENERGT LABoBAroHEs, lNC. ' 2393 satt creek HEhway (s2601) , p.o. Box 3zs8 . casper, wy a2602Tol Frce 888.235.0515 ' 307.235.0515 ' Fax 307.234. 1639 ,-casper@energylab.com . wwwehergylab.com I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080664-01 5 Trip Blank Report Date: 10/13/08 Collection Date: 08/13/08 14:15 DateRecsived: 08/15/08 Matrix; AqueousIAnalysesResult Units Qualifier MCUQCL Method Analysis Date / By I I I I I T I I t I I t t I T VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Oichloroethane-d4 Surr: Dibromofl uoromethane Surr: p-Bromofluorobenzene Surr: Toluene-d8 ND ug/L ND ug/L ND ug/L NO ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L 104 %REC 109 %REC 102 %REC106 %REC 20 1.0 1.0 1.0 '1.0 20 1.0 1.0 1.0 1.0 70-1 30 77-126 76-127 79-122 SW826OB SW826OB SWE2608 sw82608 SW82608 SW82608 sw82608 sw8260B sw8260B sw8260B SW82608 SW826OB SWE260B SW826OB 08123t08 19:49 / eli-b 08l23lOB 19:49 / eli-b 0E/23/08 19:49 / eli-b 08123108 19:49 / eli-b 08t23tOA 19:49 / eli-b 08/23108 19:49 / eli-b 0812310819:49 / eli-b 08t23108 19:49 / eli-b 08123108 19:49 / eli-b 08l23l0e 19:49 / eli-b 08/23108 19:49 / eli-b 08/23108 19:49 / eli-b 08/23108 '19:49 / eli-b 08/23/08 19:49 / eli-b Report Definitions: RL - Analyte reporting limit. QCL - Quality control lirnit. MDC - Minimum detectable concentration MCL - Maximum contaminant tevel. ND - Not detected at the repo(ing limit. ENERGT L,AaoflAToRlEs, lNC. , zlgs salt creek Hrghway (s260/) , po. Box 32i8 . casper; wy a2602Toll Free 888.235.0515 ' 307.235.0515 ' Fax 307.234. rc3e , 'cisperAienergytai.ion . wmueherirytao.ii- Client Denison Mines (USA) Corp Project: 3rd Quarter Groundwater Report Date: 10/13/08 Work Order: C08080664 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Quat Method: A2320 B Sample lD: MBLK.I Alkalinity, Total as CaCO3 Carbonate as CO3 Bicarbonate as HCO3 Sample lD: LCS-I Alkalinaty, Total as CaC03 Sample lD: C0E080653-004AMS Alkalinity, Total as CaCO3 Sample lD: C080E0653-004AMSD Alkalinity, Total as CaCO3 Sample lD: C08080664-014AMS Alkalinity, Total as CaCO3 Sample lD: C08080564-014AMSD Alkalinity, Total as CaCO3 Method Blank ND mg/L ND mg/L ND mg/L Laboratory Control Sample 198 mg/L Sample Matrix Spike 416 mg/L Sample Matrix Spike Duplicate 426 mg/L Sarnpte Malrix Spike 518 mg/L Sample Matrix Spike Duplicate 519 mg/L Run: MANTECH_080819A Run: MANTECH_080819A 90 1 '10 Run: MANTECH_080819A 80 120 Run: MANTECH_080819A 99 80 120 2.4 Run: MANTECH_080819A 80 120 Run: MANTECH_080819A 80 120 0 3 0.2 1 1 1.0 't.0 1.0 1.0 1.0 95 Batch: R106191 08/19/08'10:13 08/19/08 10:19 08/19/08 10:59 08/19/08 1 1:07 10 08/19/08 12:31 08119108 12:37 10 t I I t I I I I I I t I I I I I I I I Method: A2540 C SamplelD: MBLKl_080816 Solids, Total Dissolved TDS @ 1BO C Sample lO: LCS1_080816 Solids, Total Dissolved TDS @ 1BO C Sample lD; C08080664-01tAMS Solids, Total Dissolved TDS @ 180 C Sample lD: C08080664-0ItAMSD Solids, Total Dissotved TDS @ 1S0 C Method Blank ND mg/L Laboratory Control Sample 998 mg/L Sample Matrix Spike 2000 mg/L Sample Matrix Spike Duplicate 2000 mg/L Batch: 08081 6_i _SLDS-TDS-W Run: BAL-1_0808168 08/16/08 16:20 100 101 101 10 10 Run: BAL-l_0808168 90 110 Run: BAL-'|_0808168 90 110 Run: BAL-1_0808168 90 1 10 0,1 08/16/08 16:20 08/16/08 16:40 08/16/08 16:40 10 Qualifiers: RL - Analyte reporting timit ND - Not detected at the reporting limit. ENERQY LABORAT0RIES, tNC. . zsgs salt creek Hlqlway (s2601) . po. Box 3zs8 , casper; wyaz602To// Free 888.235.051s ' soz.2os.liri , Fax s07.2s4. 1639 , Aipiicienergy-;b.'con . www.ehergylab.iii- Client: Denison Mines (USA) Corp Project; 3rd Quarter Groundwaler Report Date: 10/13/08 Work Order: C08080664 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method: Sample lD: Chloride Sample lD: Chloride Sample lO: Chloride Sample lD: Chloride Sample lD: Chloride Sample lD: Chloride A4500{l B MBLK$080821A c08080638-001AMS c08080638-001AMSD c08080664-01 3AMS c08080664.013AMSD LCS35-080821A Method Blank ND mg/L Sample Makix Spike 532 mg/L Sample Matrix Spike Dupticate 528 mg/L Sample Matrix Spike 236 mg/L Sample Matrix Spike Duplicate 236 mg/L Laboratory Control Sample 3510 mg/L Run: TITMTION_080821A Run: TITMTION_08092iA 90 110 Run: TITRATION_080821A 90 110 Run: TITMTION_08082'lA 90 110 Run: TITRAT|ON_080821A 90 110 Run: TITMTION_08082iA 90 110 Batch: 080821A-CL-TTR-W 08/21l08 09:40 08121108 10:25 0812110810:26 10 08/21i08 13:17 08121108 1317 10 08/21l08 1 3:1 9 0.7 100 101 101 0.4 1.0 1.0 1.0 1.0 1.0 101 103 I I t I t I I I I I I I I I I I I I I Method: Sample lD: Fluoride Sample lD: Fluoride Sample lD: Fluoride Sample lD: Fluoride 44500-F C MBLK.l LCS-.t c08080654-01 lAMS c08080664-01 lAMSD Method Blank ND mg/L Laboratory Control Sample 1.02 mg/L Sample Matrix Spike 1.10 mg/L Sample Matrix Spike Duplicate 1.12 mg/L Run: MANTECH_080418A Run: MANTECH_0808'tBA 90 110 Run: MANTECH_080818A 80 ,t20 Run: MANTECH_080818A 80 120 Batch: R106100 08/18/08 16:46 08/18/08 16:48 08118/08 18:19 QBl18l08 18:22 '10 0.05 0.'10 0.10 0.10 1.8 Method: Sample lD: pH 44500-H B rcvl_080816_1 lnitial Calibration Verifi cation Standard 6.86 s.u. Analytical Run: ORtON55EA_08081 64 08/16/08 15:39 0.010 100 98 102 Method: Sample lD: pH 44500-H B C08080569-001ADUp Sampte Dupticate 7.37 s.u. Batch: 08081 6_1_PH-W_555A_ 1 Run: OR|ON555A_080816A 08/16/08 .t6:13 0.5 100.010 Qualifiers: RL - Analyte reporting limit.ND - Not detected at the reporting timit. ENERGY LABOBATORES, lNC. ' 2393 Salt Creek Highway (52601) . P.O. Box 3258 , Casper, WY 82602TollFree888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 , casper@energylab.com. www.eitergylab.com Clienf Oenison Mines (USA) Corp Project: 3rd Qua(er Groundwater Report Date: 10/13/08 Work Order: C08080664 i Analyte Result Units RL %REC Low Limit High Llmit RpD Rp0limit eual I I I I T I I t I I I T I I I I I I I Method: Sample lD: Sulfate Sample lD: Sulfate Sample lD; Sulfate Sample lD: Sulfate Sample lD: Sulfate Sample lO: Sulfate A4500-SO4 E LCS-t_080821 MBLK-1_080821 c08080659-003AMS c08080689-007AMS c08080689-007AMSD Laboratory Control Sample 5150 mg/L Method Blank ND mg/L Sample Matrix Spike 34.4 mg/L Sample Makix Spike Duplicate 34.8 mg/L Sample Matrix Spike 159 mg/L Sample Makix Spike Duplicate 154 mg/L Run: TURB-2_080821A 107 90 1 10 Run: TUR8-2_080821A Run: TURB-2_08082'tA 90 110 Run: TURB-2_080821A 90 110 Run: TURB-2_080821A 90 110 Run: TURB-2_080821A 90 110 Batch: 08082 1_1 _SO4-TURB-W 1.1 08/21l08 10:05 08/21l08'10:0E 08121108 12:09 08121108 12:10 10 08121108 16:24 08121t08 16:24 't0 59 0.6 1.0 1.0 2.9 2.9 3.1 101 109 104 Qualifierc: RL - Analyte reporting limit.ND - Not detected at the reporting timit t ENEAGY LABORATOBIES, lNC. . 2393 Salt Creek HEhway (82601) . PO. Box S2SB . Casper Wy Ap602 Toll Free 888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com . www.ehergy/ab.com I T l..lArLal., Dummary KepOft Ctient Denison Mines (USA) Corp Project: 3rd Quarter Groundwater Report Date: 10/1 3/08 Work Order: C08080664 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual I I I I I I I I I I I I I I I T Method: E2O0.7 Sample lD: MB-080903A Calcium Chromium Cobalt Copper lron Magnesium Manganese Molybdenum Nickel Potassium Silver Sodium Zinc Sample lO: LFB-080903A Calcium Chromium Cobalt Copper lron Magnesium Manganese Molybdenum Nickel Potassium Silver Sodium Zinc Sample lD: C08070631-OOIGMS2 Calcium Chromium Cobalt Copper lron Magnesium Manganese Molybdenum Nickel Potassium Silver Sodium Zinc Qualifiers: RL - Analyte reporting limit. NO - Not detected at the reporting limat Method Blank NO mg/L ND mg/L NO mgiL ND mg/L ND mg/L ND mS/L ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L Laboratory Fortified Blank 53.1 mg/L 0.998 mg/L 0.980 mg/L 0.988 mg/L 1.06 mg/L 51.8 mg/L 0.987 mg/L 0.971 mg/L 0.980 mg/L 46.3 mg/L 0.991 mg/L 51.2 mg/L 0.999 mg/L Sample Matrix Spike 962 mg/L 10.1 mg/L 11.7 mg/L 10.3 mg/L 9E.4 mg/L 1240 mgll 66.0 mg/L 9.71 mS/L 11 .7 rng/L 457 mg/L 1O.2 mg/L 768 mg/L 19.0 mg/L Run: lCP2-C_080903A Run: lCP2-C_080903A 85 125 85 125 85 125 85 125 85 125 85 125 85 85 85 85 125 85 125 85 125 85 125 Run: lCP2-C_0809034 70 130 70 130 70 130 70 130 70 130 70 13070 130 70 130 70 130 70 130 70 130 70 130 70 130 0.1 0.002 0.002 0.005 0.005 0.04 0.0003 0.003 0.004 0.02 0.006 0.8 0.002 0.50 106 0.050 100 0.010 98 0.010 99 0.030 106 0.50 104 0.010 99 0.10 97 0.0s0 98 0.50 93 0.010 99 0.77 102 0.010 100 1.1 1 10 0.050 100 0,018 99 0.052 99 0.047 1 .0 109 0.010 0.10 97 0.0s0 99 1.0 91 0.060 102 7.7 101 0.022 99 125 125 12s Batch: R106948 09/03/08 14:05 09/03/08 14:09 09/03/08 16:03 A - The analyte level was greater than four times the spike level. lnaccordance with the method % recovery is not calculated. I I I ENERGY LABORATOBIES, INC ' 2393 Salt Creek Hrghway (52601) . PO. Box 3258 . Caspet WY 82602 Toll Free 888.235.0515 ' 307.235.05/5 ' Fax 307.234.1639 , -casper@energylab.com , www,eitergylab.con Client Denison Mines (USA) Corp Project: 3rd Quarter Groundwater Report Date: 10/13/08 Work Order: C08080664 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Oual I I I I I I T I I I I I I I I I Sample lD: C08070631-00'tGMSD2 Sampte Makix Spike Duplicate Calcium Chromium Cobalt Copper lron Magnesium Manganese Molybdenum Nickel Potassium Silver Sodium Zinc Sample lD: C08081009-001CMS2 Calcium Chromium Cobalt Copper lron Magnesium Manganese Molybdenum Nickel Potassium Silver Sodium Zinc Sample lD: C08081009-0OlGMSD2 Calcium Chromium Cobalt Copper lron Magnesium Manganese Molybdenum Nickel Potassium Silver Sodium Zinc Quaiifiers: RL - Analyte reporting limit. ND - Not detected at the reporting limit A - The analyte level was greater than four times the spike level. lnaccordance with the method % recovery is not calculaied. 925 mg/L 9.90 mg/L'11.4 mg/L 10.1 mg/L 95.9 mg/L 1230 mg/L 64.3 mg/L 9.68 mg/L 11.4 mg/L 455 mgiL 9.92 mg/L 768 mgiL 18.9 mg/L Sample Mahix Spike 3010 mg/L 49.8 mg/L 48.8 mg/L 49.2 mg/L 54.0 mg/L 2680 mg/L 52.9 mg/L 52.2 mg/L 48.6 mg/L 2480 mg/L 50.6 mg/L 12900 mg/L 48.6 mg/L Sample Matrix Spike Duplicate 2980 mg/L 49.9 mg/L 48.8 mg/L 49.2 mg/L 54.0 mg/L 2640 mg/L 52.7 mg/L 52.8 mg/L 48.6 mg/L 2500 mg/L 51.3 mg/L 12800 mg/L 49.3 mg/L 1.1 102 0.050 98 0.018 95 0.052 97 0.047 1.0 106 0.010 0.10 97 0.050 97 1.0 91 0.060 99 7 .7 101 0.022 98 5.3 10s 0.093 99 0.089 98 0.26 98 0.24 108 1.9 105 0.018 98 0.15 96 0.21 97 1.2 89 0.30 101 39 0.11 97 5.3 104 0.093 100 0.089 98 0.26 98 0.24 108 1.9 1040.018 98 0.15 97 o.21 97 1.2 90 0.30 103 39 0.11 99 Run: lCP2-C_0809034 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 Run: lCP2-C_080903A 70 130 70 130 70 130 70 130 70 130 70 130 7A 130 70 130 70 130 70 130 70 130 70 130 70 130 Run: lCP2-C_0809034 70 130 70 130 70 130 70 .t 30 7A 130 70 13070 130 70 130 70 130 70 130 70 130 70 130 70 130 Batch: Rl06948 09/03/08 16:07 20 20 20 20 20 20 20 20 20 20 20 20 20 09/03/08 18:08 A 09/03/08 18:12 20 20 20 20 20 20 20 20 20 20 20 20 20 3.9 2.2 2.9 2.3 2.6 1.2 2.7 0.3 2.5 0.4 2.5 0 0.5 1 0.1 0.1 0.1 n 1.3 0.3 1.2 0.1 0.9 1.2 0.3 1.6 ENERGY LAEORAfORES, lNC. . 2393 Salt Creek Highway (8260t) . PO. Box 3258 . Casper, WY 82602 Toll Free 888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 . casper@energylab.com . www.energylab.com Clien* Denison Mines (USA) Corp Project: 3rd Quarter Groundwater Report Date: 10/13/08 Work Order: C08080664 Analyte Result Units RL %REC Low Limit Hagh Lamit RPD RPDLimit QUaI Method: 8200.8 Sample lD: Manganese Selenium Thallium Uranium Sample lD: Manganese Selenium Thallium Uranium Sample lD: Manganese Selenium Thallium Uranium LFB c08080438-0090MS4 5E-05 0.0002 1E-05 1E-05 0.0010 107 0.0010 103 0.0010 105 0.00030 105 0.010 96 0.0010 990.10 100 0.00030 103 102 104 106 110 Batch: R106627 081271O8 12:04 08127108 12:11 08127lOB 12:58 08127/08 13:32 20 20 20 20 Method Blank ND mg/L ND mg/L ND mg/L ND mg/L Laboratory Fortified Blank 0.0535 mgll 0.0513 mg/L 0.0528 ms/L 0.0524 mg/L Sample Matrix Spike O.O7O2 mg/L 0.0502 mg/L 0.0502 mg/L 0.0657 mgiL Run: ICPMS2-C 080827A Run: ICPMS2-C_080827A 85 115 85 115 85 115 85 115 Run: ICPMS2-C_080827A 70 130 70 130 70 '130 70 130 Run: ICPMS2-C_080827A 70 130 70 130 70 130 70 130 Sample lD: C08080438-009DMSD4 Sample Matrix Spike DuplicateManganese 0.0732 mgiL 0.010Selenium 0.0525 mg/L O.0O1OThallium 0.052A mgiL O.1OUranium 0.0690 mg/L 0.OOO3O Qualifiers: RL - Analyte reporting limit. 4.2 4.5 0 4.9 ND - Not detected at the reporting limit. t ENEBGY LABORATORIES, lNC. , 2393 Salt Creek Highway (5260t) . PO. Box O2i8 . Casper; Wy A2602foll Free888.235.0515 ' 307.235.0515 ' Fax 307.234./639 . cisper@energylab.com. www.eitergylab.com t Client Denison Mines (USA) Corp Project 3rd Quarter Groundwater Report Date: 10/13/08 Work Order: C08080664IAnalyteUnitsRL %REC Low Limit Hish Limit RPD RPOLimit Qual I I I I I I I I I I I I I I I I Method: E200.8 Sample lD: LRB Arsenac Cadmium Cobalt Copper Lead Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc Sample !D: LFB Arsenic Cadmium Cobalt Copper Lead Mercury Molybdenum Nickel Selenium Silver Thallium Tin Urantum Vanadium Zinc Sample lD: C08080692.00SFMS4 Arsenic Cadmium Cobalt Copper Lead Mercury Molybdenum Nickel Selenium Method Blank ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L 4E-05 mg/L ND mg/L ND mg/L 2E-05 mg/L 8E-06 mg/L ND mg/L ND mg/L ND mg/L ND mg/L Laboratory Fortified Blank 0.0514 mg/L 0.0523 mg/L 0.0508 mg/L 0.0520 mg/L 0.0510 mg/L 0.00513 mg/L 0.0509 mg/L 0.0508 mg/L O.O522 mg/L 0.0202 mg/L 0.04E3 mg/L 0.0515 mg/L 0.0488 mg/L 0.0500 mg/L 0.0543 mg/L Sample Matrix Spike 0.0499 mg/L 0.0458 mg/L 0.0478 mg/L 0.0442 mg/L 0.0468 mg/L 0.00458 mg/L 0.0494 mg/L 0.0498 mg/L O.O427 mg/L 4E-05 3E-06 5E-06 3E-05 3E-06 1 E-05 9E-06 3E-05 0.0001 7E-06 4E-06 8E-06 2E-06 sE-05 3E-05 0.0010 103 0.0010 105 0.0010 102 0.0010 104 0.0010 102 0.0010 103 0.0010 102 0.00t0 102 0.0010 104 0.0010 101 0.0010 97 0.0010 103 0.00030 98 0.0010 100 0.0010 109 0.0010 95 0.010 920.010 89 0.010 88 0.050 940.0010 90 0.10 96 0.050 88 0.0010 84 Run: ICPMS4-C_080904A 85 115 85 115 85 115 85 't15 85 115 85 't 15 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 8s 115 Run: ICPMS4-C_080904A 70 130 70 13070 130 70 130 70 130 70 130 70 130 70 130 70 130 Run: ICPMS4-C 080904A Batch: R107055 09/04/08 14:04 09lO4lO8 14:11 09/05/08 07:59 Qualifiers; RL - Analyte reporting limit ND - Not detected at the reporting limit I ENEBGY LABOBATORIES, lNC. . 2393 Satt Creek Highway (82601) . PO. Box 3258 . Casper, WY 82602 Toll Free 888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com . www.energylab.com I I t"lArqu uummary Report ClienI Denison Mines (USA) Corp Project: 3rd Quarter Groundwater Report Date: 10/13/08 Work Order: C08080664 Analyte Result Units RL o/oREC Low Limit High Limit RpD RpDl-imit eual I I I I I t I I I t I I I I I t Method: E200.8 Sample lD: C08080692-005FMS4 Silver Thallium Tin Uranium Vanadium Zinc Sample lD: G08080692-005FMSD4 Arsenic Cadmium Cobalt Copper Lead Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RL - Analyte reporting limit. ND - Not detected ai the reporting limit Sample Matrix Spike 0.00738 mg/L 0.0465 mg/L 0.0459 mg/L 0.416 mg/L 0.0460 mg/L 0.0481 mg/L Sample Matrix Spike Duplicate 0.0502 mg/L 0.0454 mg/L 0.0472 mg/L 0.0437 mg/L 0.0461 mg/L 0.00465 mg/L 0.0527 mg/L 0.0490 mgil 0.0412 mg/L 0.00780 mg/L 0.0462 mg/L 0.0464 mg/L 0.407 mg/L 0.0458 mglL 0.0476 mg/L Run: ICPMS4-C_080904A 70 130 70 130 70 130 70 130 70 130 70 130 Run: ICPMS4-C_080904A 70 130 70 130 70 130 70 r30 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 Batch: R107055 09/05/08 07:59 S0.010 370.10 93 0.10 92 0.00030 0.10 9l 0.010 83 0.0010 96 0.010 91 0.010 870,010 87 0.050 920.0010 920.10 103 0.050 86 0.001 0 8 t 0.010 39 0.10 92 0.10 93 0.000300.10 90 0.010 82 0.6 0.9 1.2 1.2 0 1.6 0 0 3.6 0 0 0 2.2 0 1 09/05/08 08:06 20 2A 20 20 20 20 20 20 20 20s 20 2020A 20 2A A - The analyte level was greater than four times the spike level. lnaccordance with the method % recovery is not calculated. S - Spike recovery outside of advisory timits. t I ENEROY LAEORATORIES, tNC. ' 2393 1a/t Creek Highway (8260A ' PO. gox 3258 ' Caspet WY 62602 fojiFiiiaaa.zis.osti . s0z.is5.05t5 . Fax 307.234.1639 ' casper@energylab.com'www.energylab.com Client: Project: Denison Mines (USA) Corp 3rd Quarter Groundwater Report Date: '10/13/08 Work Order: C08080664I Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit QuaI I I I t I I I Method: E200.8 Sample lD: LRB Beryllium Uranium Sample lD: LFB Beryllium [Jranium Sample lD: C08080664-008AMS4 Beryllium Uranium Sample lD: C08080664-008AMSD4 Beryllium Uranium Samplo lD: C08090188-001CMS4 Beryllium Uranium Sample lD: C08090188-001CMS04 Beryllium Uranium 0.0499 mg/L 0.00030 Sample Makix Spike 0.0440 mg/L 0.010 0.0926 mg/L 0.00030 Sample Matrix Spike Duplicate Method Blank ND mg/L ND mg/L Laboratory Fortified Blank 0.0494 mg/L 0.0464 mg/L 0.0974 mg/L Sample Matrix Spike 0.5'14 mg/L 0.561 mg/L Sample Matrix Spike Duplicate 0.5'13 mg/L 0.552 mg/L Run: ICPMS2-C 080909A Run: ICPMS2-C_0E09094 85 'r 15 85 115 Run: ICPMS2-C_080909A Batch: Rl07308 09/09108 12:23 09/09/08 12:30 09/09/08 17:18 OglOglOB 17:25 20 20 09/09/08 20:49 09/09/08 20:56 20 20 3E-05 1E-05 0.0010 0.0'10 0.00030 0.010 0.00030 0.010 0.00030 103 70110 70 99 100 88 102 70 70 130 130 130 130 Run: ICPMS2-C_0809094 93 70 130 112 70 130 Run: ICPMS2-C_0809094 103 70 130 112 70 130 Run: ICPMS2-G 0809094 5.3 5.1 0.1 1.7 I t I I I I I I I Method: E350.1 Sample lD: MBLK Nitrogen, Ammonia as N Sample lD: LFB Nitrogen, Ammonia as N Sample lD: 80E081647-001GMS Nitrogen, Ammonia as N Sample lD: 808081647-001GMSD Nitrogen, Ammonia as N Sample lD: C08080664-010D Nitrogen, Ammonia as N Sample lD: C08080664-010D Nitrogen, Ammonia as N Qualifiers: RL - Analyte reporting limit. Method Blank ND mg/L Laboratory Fortified Blank't.04 mg/L Sample Matrix Spike 1.03 mg/L Sample Matrix Spike Duplicate 1.01 mg/L Sample Matrix Spike 1.16 mg/L Samplo Matrix Spike Duplicate 1.16 mg/L 0.10 0.10 2.10. 10 910.10 0.30.10 0.02 Run: SUB-Bl 16005 Run: SUB-B1 16005 90 110 Run: SUB-81 16005 90 110 Run: SUB-81 16005 90 110 Run: SUB-B1 16005 90 110 Run: SUB-Bl 16005 90 110 ND - Not detected at the reporting limit. Batch: B_Rl'16005 08/18i08 14:53 08i18/08 14:54 08/18/08 14:59 08/1 8/08 1 5:00 10 08/18/08 15:14 08/18/08 15:16 10 ENEflGY LABORATOBIEA lNC. ' 2393 Salt Creek Highway (82601) . PO. 1ox 3258 . Caspet; WY 82602 To//Free888.235.0515 ' 307.235.0515 . Fax 307.234. 1639 , casper@energylab.com. www.energylab.com t tArqu uummary Kepon Client: Project: Denison Mines (USA) Corp 3rd Quarter Groundwater Report Date: 10/1 3/08 Work Order: C08080664 Analyte Units RL %REC Low Limit High Limit RPD RPDLimit QuaI Method: E353.2 Sample lO: ICV Nitrogen, Nitrate+Nitrite as N lnitial Calibration Verification Standard 36.9 mg/L 0.050 Analytical Run: SUB-B1 15971 08/1 8/08 1 0:1 7 11090 2.3 2.1 0.1 r06 108 108 106 106 I I I I I I I I I I I I I I I I I I I Method: E353.2 Sample lD: MBLK Nitrogen, Nitrate+Nitrite as N Sample lD: LFB Nitrogen, Nitrate+Nitrite as N SamplelD: 808081640-001AMS Nitrogen, Nitrate+Nitrite as N SamplelD, 808081640-001AMSD Nitrogen, Nitrate+Nitrite as N Sample lD: 808081650-00'IEMS Nitrogen, Nitrate+Nitrite as N Sample lD: 808081650-001EMSD Nitrogen, Nitrate+Nitrite as N Sample lD: 808081537.001BMS Nitrogen, Nitrate+Nitrite as N Sample lD: 808081537-001BMSD Nitrogen, Nitrate+Nitrito as N Method Blank ND mg/L Laboratory Fortified Blank 1.04 mglL Sample Matrix Spike 1.05 mg/L Sample Matrix Spike Duplicate 1.08 mg/L Sample Matrix Spike 1.32 mg/L Sample Matrix Spike Duplicate 1.29 mg/L Sample Matrix Spike 2.53 mg/L Sample Makix Spike Duplicate 2.53 mg/L Run: SUB-B1 1 5971 Run: SUB-81 1 5971 90 110 Run: SUB-8115971 90 110 Run: SUB-8115971 90 110 Run: SUB-81 1 5971 90 110 Run: SUB-Bl 1 5971 90 110 Run: SUB-8115971 90 110 Run: SUB-8115971 90 1'r0 Batch: B_R11597'1 08/18/08 10:'19 08/1 8/08 1 0:20 08/'18/08 14:57 08/1 8/08 1 4:58 10 08/18/08 14:40 08/18/08 14:41 10 08/16/08 10:26 08118108 1A:27 '10 0.002 0,050 0.050 0.050 0.050 0.050 0.050 0.050 105 105 Method: E900.1 Sample lO: M8.GA.0160 Gross Alpha minus Rn & U Sample lD: LCS-GA-0160 Gross Alpha minus Rn & U SamplelD: C08080564-013CMS Gross Alpha minus Rn & U SamplelD: C080E0654-013CMSO Gross Alpha minus Rn & U Method Blank 0.3 pCi/L Laboratory Control Sample 27.5 pCi/L Sample Matrix Spike 24.9 pCi/L Sample Matrix Spike Ouplicate 23.9 pCi/L Run: TENNELEC-3_080905A Run: TENNELEC-3_080905A 70 130 Run: TENNELEC-3_080905A 70 130 Run: TENNELEC-3_080905A 70 130 103 89 Batch: GA-o160 09/08/08 1 3:30 U 09/08/08 13:30 09/08/08 1 3:30 09/08/08 13:30 24.63.8 RL - Analyte reporting limit. U - Not detected at minimum detectable concentration NO - Not detected at the reponing limit I ENEBGY LAEOBATORIES, lNC. . 2393 Salt Creek Highway (82601) . P.O. &ox 3258 ' Caspet WY 82602 To//Free888.235.0515 . 307.235.0515 . Fax 307.234. 1639 ' casper@energylab.com'www.energylab.com I clA/QC Summary t{eport Client Denison Mines (USA) CorP Project 3rd Quarter Groundwater Report Date: 10/'13/08 Work Order: C08080664IResult UnitsAnalyte RL %REC Low Limit High Limit RPO RPDLimit Qual I I I I I I I I I t I I I I I I Method: SW8260B Sample lD: 1cs082308 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methytene chloride Naphthalene Toluene 6+p-Xylenes o-Xylene Surr: 1,2-Dichloroethane-d4 Surr: Dibromofluoromethane Surr: p-Bromofl uorobenzene Surr: Toluene-d8 Sample lD: b|k082308 Acetone Eenzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene m+p-Xylenes o-Xylene Xylenes, Total Surr: 1,2-Dichloroethane-d4 Surr: Dibromofl uoromethane Surr: p-Bromofl uorobenzene Surr: Toluene-d8 Sample lD: G080E0654-010E Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Qualifiers: RL - Analyte reporting limit. Laboratory Control Sample 46.0 ug/L 5.08 ug/L 5.28 ug/L 5.16 ug/L 6.28 ug/L 48.0 us/L 5.00 ug/L 7.12 ugil 5.44 ug/L 11.2 ugiL 5.7? ug/L Method Blank ND ug/L ND ug/L ND ugiL ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L Sample Makix Spike 4480 ug/L 484 ug/L 528 ug/L 2140 ug/L 584 ug/L 4720 ug/L 592 ug/L 436 ug/L 20 1.0 1.0 1.0 1.0 20 1.0 1,0 1.0 1.0 1.0 '1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 2000 100 100 100 100 2000 100 100 92 102 106 103 126 96 100 142 't 09 112 114 102 110 99 108 102 110 100 108 90 97 106 162 117 94 101 87 Run: SUB-BI '16385 62 130 71 133 6'l 144 Batch: B_R116385 08123t08 17:15 08l23lOB 18152 59 133 63 149 55 145 73 55 126 139 7A 134 78 133 79 136 70 130 77 126 76 127 79 122 Run: SUB-Bl 1 6385 70 130 77 126 76 127 79 122 Run: SUB-81 1 6385 62 130 0812410E 14:35 71 133 61 't44 69 133 SE 63 149 55 145 73 126 55 t39 E - Estimated value. Result exceeds the instrument upper quantitation limit. ND - Not detected at the reporting limit. S - Spike recovery outside of advisory limits I ENEBGY LABORATOf,IES, lNC. ' 2393 Salt Creek Highway (82601) . P.O. flox 3258 . Casper; WY 82602 Toll Free 888.235.05/5 ' 307.235.0515 ' Fax 307.234.1639 . casper@energylab.com . www.energylab.com T I GIA/QU summary Report Client: Project: Denison Mines (USA) Corp 3rd Quarter Groundwater Report Date: 10/'13108 Work Order: C08080664 Analyte RL %REC Low Limit High Limit RPD RPDLimit Qual I T I I I I I I Method:sw8260B Sample lD: C08080664.010E Toluene 6+p-Xylenes o-Xylene Surr: 1,2-Dichloroethane-d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: ToluenedS SamplelD: C08080664.010E Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene m+p-Xylenes o-Xylene S urr: 1 .2-Dichloroethane-d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: Toluene-d8 Sample Matrix Spike 496 ug/L 100 1010 ug/L 100 520 ug/L 100 100 100 100 100 Sample Matrix Spike Duplicate 4560 ug/L 472 ug/L 520 ug/L 2030 ug/L 544 ug/L 44E0 ug/L 584 ug/L 640 ug/L 492 ugiL 1010 ugll 512 ug/L 133 144 69 133 63 149 55 145 73 126 55 139 78 134 78 133 79 136 70 130 77 126 76 127 79 122 2000 100 100 100 100 2000 100 100 100 100 100 100 '100 100 100 99 '101 104 111 111 106 106 91 94 104 141 109 90 100 128 98 101 102 111 112 104 106 1.8 2.5 1.5 5.2 7.1 5.2 1.4 38 0.8 0.4 1.6 Run: SUB-B1 16385 78 134 78 133 79 136 70 130 77 126 76 127 79 122 Run: SUB-B116385 62 130 Batch: B_Rl 16385 08124/OB 14i35 a8D4tA8 15.O4 20 20 20 20 20 20 2a 20 20 20 20 71 61 70 77 76 79 ug/L ug/L I t T I I I I t Method:sw8260B Sample lD; 1cs082408 Chloroform Methylene chloride S urr: 1,2-Dichloroethane-d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: Toluene-d8 Sample ID: b|k082408 Chloroform Methylene chloride Surr: 1,2-Dichloroethane-d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: Toluene-d8 Laboratory Control Sample 4.96 ug/L 4.80 ug/L Method Blank ND ND Run: SUB-BI 16387 69 73 70 77 lo 79 Run: SUB-8116387 Batch: B_R116387 QB|Z4|QB 10:46 0E124108 1213 1.0 99 1.0 96 1.0 'l 10 1.0 110 1.0 102 1.0 104 1.0 1.0'r.0 115 1.0 112 1.0 99 1 .0 103 133 126 130 126 127 122 130 126 127 122 Qualifiers: RL - Analyte reporting limit. 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It d)olJ J JJ s.S $s f5 ti LN :,.5ffi Ng*F,E N A \ N(): a\ sf $. \ A \ \ tc T\UI )g {1 f\s -S\n$ ^.F{ \n.N $ Ds.S Ev) s\h,\ \\r \\J<.I* a\g-\a'\ \ tp To oE Eooo c o !uo o d \zP o.E HE lltaot-{u,aa{J oo l-o o. Eoo ocI.9 ora!-.E-"! (J=EP€^l-o);€f;'ESco..= e-Eoil€ E:x U) trt)Eqrh:85 oq lQ)IEIElo lc) I id o)P3 oIhocg:I [y! punoreunl gg1'19 [y$ punoeunl ;eulo11 N N N \It\ ido6:JCrLqg \:or6r CAo(> ano-\ tr /'-r o AIHCVILV 3fS u alrl3 do oIIU q\ {4 ,l N \_.qo\E\t: E\o 'ri+ u \I5+t^s;/l 3E. E^s; lvtrl.-- E2oc.slo \ oEEooo e aEos Jq 6t (tttcc .ga .a(!) c0, oo c f 6)d I(Eooo,oogo E(g @ It ,l\ 6 -t<(7 x >z x .reqlo IessEolEJ X uouqa6anspnosls[oSlatelI:ty E6g1g7y1y:adllaldureg k : \s) ( I-J 3\-s 3 I \E fs ': E .i'i EAEI6l {.6o. Eo) hY.iln S0o\ x) ,-il .t: -.s\8'-Euo o =troo.ot \)t trsU\ID: !,o ()o'6 (E Eolr.oFouloo r.lJ I o o-Egrro> orE (ll 9ij)J LBfo YE otrg <a!= Jcg CrlEp < tEotr S€n6^9 o'og< &E dqro z ft 3o o(L 5 = E-o TL LolJ-E0)'= C'otEoo,ou. o..:o)oc0, -E () -!h'a vI ,} (),os .)r oE-e *8o .c N \)q oa! :& )ns =,& Jo9 J" !0: & 5a LO 6sEg F-z;r.u.9oE u.r -3 o-- g>E<Za --s :F N tr ?s .l e] 3 E o @ N @ o o EEfB6u=o atpoog c) q) coooo L o) .Eo,ooo0) Looo 0) ox. "{o Nl (, o)o0- E';Lo OP E9ui+r9OE 9EJP crForEE -:(E: .g$i*(U; -ahLO<frE5tr6(!Eo>EE6oeg-a8!o -EoEtt-toi CE (EH -E<oH |HH ! t I I I I I I I I I t I Workorder Receipt Checklist Denison Mines (USA) Corp Energy Laboratories lnc Login completed by: Edith McPike Reviewed by: Reviewed Date: Shipping container/cooler in good condition? Custody seals intact on shipping container/cooler? Custody seals intact on sample bottles? Chain of custody present? Chain of custody signed when relinquished and received? Chain of custody agrees with sample tabels? Samples in proper container/bottle? Sample containers intact? Sufficient sample volume for indicated test? All samples received within holding time? Container/Temp Blank temperature: Water - VOA vlals have zero headspace? Water - pH acceptable upon receipt? Yes [J Yes @ Yes ! Yes fl Yes [} Yes [J Yes [l Yes fl Yes [J Yes [J 2.5'C On lce Yes fl Yes [[ I tililt ilil tilt ilil ilil ilt ilffi tilil tilil til ffi c08080664 Date and Time Received: 811512008 9:25 AM Received by: jm Carrier name: Next Day Air Non Non NoI No fI NoE NoE Non Non Non No fl Non NoI Not Present I NotPresent n Not Present EJ No VOA vials submitted Not Applicable n I t I I I I I Contact and Corrective Action Comments: None I ENERGY LABORATOBIES, INC ' 2393 Salt Creek Highway (82601) . P.O. Box 3258 . Caspet WY 82602TollFree888.235.0515 ' 307.235.0515 ' Fax 307.234. 1639 . casper@energylab.com. www.eitergylab.com I I I I I I I I I t I T I I I t t I CLIENT: Proiect: Denison Mines (USA) Corp 3rd Quarter Groundwater Dale: 13-Oct-08 CASE NARRATIVESample Delivery Group: C08080664 The following Case Narrative contains exceptions or comments pertaining to the analysis of samples submitted by Denison Mines (USA) Corp on 811512008 09:25:00. These samples were assigned ELI Workorder Number c08080664. oRtGTNAL SAMPLE SUBM|TTAL(S) All original sample submittals have been returned with the data package. SAMPLE TEMPERATURE COMPLTANCE: 4"C (r2'C) Temperature of samples received may not be considered properly preserved by accepted standards. Samples that are hand delivered immediately after colleclion shall be considered acceptable if there is evidence that the chilling process has begun. GROSS ALPHA ANALYSIS Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters. Data provided by this method for non potable waters should be viewed as inconsistent. RADON IN AIR ANALYSIS The desired exposure time is 48 hours (2 days). The time delay in returning the canister to the laboratory for processing should be as short as possible to avoid excessive decay. Maximum recommended delay between end of exposure to beginning of counting should not exceed 8 days. SOIUSOLID SAMPLES All sarnples reported on an as received basis unless othenvise indicated. ATRMINE, SIMAZINE AND PCB ANALYSIS USING EPA 505 Data for Atrazine and Simazine are reported from EPA 525,2, not from EPA 505. Data reported by ELI using EpA method 505 reflects the results for seven individual Aroclors. \Mren the results for all seven are ND (not detected), the samplemeets 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 itsbranch laboratories or qualified contract laboratories for this service. Any such laboratories will be indicated within theLaboratory Analytical Report. BRANCH LABORATORY LOCATIONS eli-b - Energy Laboratories, lnc. - Billings, MT eli-g - Energy Laboratories, lnc. - Gillette, WY 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: tAfY00002; FL-DOH NELAC: E87641; Catifornia: 0211BCA Oregon: WY20000'l; 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,\ ^/ certifies that certain method selections contained in this report meetrequirements as set forth by the above accrediting authorities. Some results requested by the client may noi be coveredunder these certifications. All analysis data to be submitted for regulatory enforcement stiould be certifi6d in the samplestbte of origin. Please verify 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. THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT t ENEROY LAAORATORIES, lNC. , 2393 Salt Creek Highway (82601)' PO. Box 3258 ' Casperi WY82602 Toll Free888.235.0515 . 307.235.0515 , Fax 307.234.1639 ' casper@energylab.com'www.energylab.com I I I t ANALYTICAL SUMMARY REPORT September 18, 2008 Denison Mines (USA) Corp 6425 S Hwy 191 Blanding, UT 84511 Workorder No.: C0808034 Quote lD: C1640 - POC Wells / Monthly Groundwater Sampling Project Name: 3rd Quarter Groundwater Energy Laboratories, lnc. received the following 13 samples from Denison Mines (USA) Corp on 8/Ei2008 for analysis. Sample lD Client $ample lD Collect Date Receive Date Matrixlo* C080803,t4-001 MW 11 c08080344-002 MW 14 08/05/08 13:43 08/08/08 Aqueous Metals by ICP/ICPMS, Dissolved Alkalinity QA Calculations Chloride Fluoride Nitrogen, Ammonia Nitrogen, Nitrate + Nitrite pH Gross Alpha minus Rn222 and Uranium Solids, Total Dissolved Sulfate SW8260B VOCs, Standard List t 08/06/08 15:10 08/08/08 Aqueous SameAsAbove I lt I ll 0-c08080344-003 MW23 08/05/08 15:23 08108/08 Aqueous SameAsAbove vc08080344-0u Mw 24 08/07/08 07:30 08/08/08 Agueous SameAsAbove 1 - c08080344-005 MW25 08/04/08 1 5:53 08/08/08 Aqueous Same As Above - c08080344-006 MW27 08/06/08 I 2:36 08/08/08 Aqueous SameAsAbove - C080803,14-007 MW 28 08/06/08 09:43 08/08/08 $) -., C08080344-008 MW 29 08/05/08 08:57 08/08/08 \ -C08080344-0Og MW30 Aqueous SameAsAbove Aqueous Same As Above 08l04lOB 1 1:12 08/08/08 Aqueous SameAsAboveI\--C080803a4-010 MW 31 08/04/08 13:34 08/08/08 Aqueous Same As Above t CI - aoBoBoE44{1 08/05/08 11:13 08/08/08 Aqueous SameAsAbove Aqueous SameAs Above Aqueous SW8260B VOCs, Standard List (S-coeoaoy4-o1z MW6s oB/05/0811;13 06/08/08v c0oooo344{13 Trip€r-* -oglbzoe oTso ouos/o8I t I I t T {s apqropriate, any exceptions or problems with the analyses are noted in the Laboratory Analytical Report, the OA/QC Summary Report, or the Case Narrative. lf you have any questions regarding these tests results, please call. ReportApproved Bv: Nw g /u[rb_ t ENEEGY LABORATOBIES, lNC. . 2393 Salt Creek Highway (82601) . PO. Box 3258 . Casper WY 82602 To/1 Free888.235.0515 , 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com. www.energylab.com I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-001 MW 11 Report Date: 09/18/08 Collection Date: 08/05/08 13:43 DateReceived: 08108/08 Matrix: Aqueoust Analyses Result Units Qualifiers RL MCU OCL Method Analysis Date / By mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L pCi/L pCi/L pCi/LI T I T T t I I I I I I I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ 180 C METALS - DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIONUCLIDES - DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC ND ND ND ND ND ND 99 ND 70 ND ND ND NO ND ND ND ND ND ND 1.0 o.4 0.3 ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L uglL ugiL uS/L ug/L ug/L ug/L 1.0 1.0 0.52 ,| 0.1 0.50 0.1 0,05 0.50 3.8 30 0.01 10 5.0 0.50 0.s0 25 10 10 30 1.0 10 0.50 't0 20 5.0 10 0.50 100 0.30 15 10 ND 380 40.6 29 0.5 10.6 0.6 ND 6.00 631 1 060 7.83 s.u. 1780 mg/L 42320 B A2320 B E200.7 A4500-ct B A4500-F C E200.7 E350.1 E353.2 E200.7 E200.7 A4500-SO4 E E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 44500-H B 08/08/08 15:31 ljah 42540 C 08/11/08 14:22ljah 08/08/08 20:36 / ljl 08/08/08 20:36 / ljl 09/16/08 15:11 /cp 08/1 1/08 09:37 / sp 08/1 1/08 14:29 t \l 09/16/08 15:11 /cp 08/11/08 1l:05/eli-b 0E/13/08 13:58/eli-b 09/16/08 15:11 /cp 09/16/08 15:11 I cp 08/1 4/08 1 5:55 / jal 08/1 3/08 23:36 / ts 08/25108 20:55 / sml 08/1 3/08 23:36 / ts 08/1 3/08 23:36 / ts 08/1 3/08 23:36 / ts O8/1 3/08 23:36 / ts 08/25/08 20;55 / sml 08/1 3/08 23:36 / ts 08/1 3/08 23:36 / ts 08/13/08 23:36 / ts 08/1 3/08 23:36 I ts 08/1 3/08 23:36 / ts 08/1 3/08 23:36 / ts 08/20/08 17:14 I sml 08/13/08 23:36 / ts 08/1 3/08 23:36 / ts 08i/19/08 02:56 / sml 08/1V08 23:36 / ts 08/1 3/08 23:36 / ts 09/03/08 09:32 / crw 09/03/08 09:32 / cnv 09/03/08 09:32 / crw I I I Report Definitions: RL - Analyte reporting limit. QCL - Quality controt timit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detecled at the reporting limit. D - RL increased due to sample rnatrix interference. I ENERGY LABORATOBTES, lNC. - 2393 Salt Creek Highway (52601) ' PO. 1ox 3258 ' Caspet; WY 82602 riiFiiiaas.z1S.ost| , 907.29s.0515 , Fax 307.234.16-39 ' casper@energylab.com'www:energylab.com I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) CorP 3rd Quarter Groundwater c08080344-001 MW 11 Report Date: Collection Date: DateReceived: Matrix: 09/18/08 08/05/0813;43 08/08/08 Aqueous/ I Analyses Result Units Quallfiers RL MCUQCL Method Analysis Oate / By t I I lt l/ /oa:neuAurY/ Ailc Balance (r 5) / Anions Cations 2.47 % 29.1 meq/L 30.5 meq/L 1980 mg/L:. 0.900 ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L 'r 13 %REC 116 %REC 105 %REC 94.0 %REC Calculation Calculation Calculation Calculation Calculation sw8260B sw8260B sw8260B sw8260B SW825OB sw8260B sw8260B SW826OB sw6260B SW8260B SW826OB SW826OB sw8250B sw8260B 09/17108 16:47 / sdw 09/1 7/08 1 6:47 / sdw 09/1 7/08 16:47 / sdw 09/17108 16:47 / sdw 0911710816:47 / sdw 08/12108 20:06 /jk 08112108 20:06 / ilr 08/12108 20:06 /jlr 08/1 2/08 20:06 / jk 0811210820i06 t itt 08112108 20:06 / jlr 08/12108 20:06 /jlr 08/1 2/08 20:06 / ilr 0811210E 20:06 / ilr 08/1 2/08 20:06 / ilr 08/12/08 20:06 / ilr 08nA08 20:06 / jlr 08/12108 20:06 / jlr 0U'12108 20:06 / jh Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLANLE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzened4 Surr: Dibromofluoromethane Surr: p-Bromofl uorobenzene Surr: Toluene-d8 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-1 30 80-1 20 80-1 20 I I I I I I I I I I RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detecled at the reporting limit. ENERGY LABOBATORIES, lNC. . 2393 Salt Creek Highway (8260t)' PO. Box 3258 ' Caspe4 WY82602 Toll Free 888.235.0515 . 307.235.0515 . Fax 307.234.1639 ' casper@energylab.com ' www.energylab.com LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp ./, 3rd Quarter Groundwater ,/co8o8o344-Oo2 I-/ MW 14 Report DatE: 09/1 8/08 Collection Date: 08/06/08 15:10 DateReceived: 08/08/08 Matrix: Aqueous Analyses Result Units Qualifiers RL MCU QCL Method Analysis Date / By 't.0 1.0 0.52 1 0.1 0.50 0.1 0.05 0.50 3.8 30 { MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 :' Calciumr Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate /pnvsrc* PRoPERTTESIlpH I I Solids, Total Dissolved TDS @ 180 Cv METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIONUCLIOES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (i) Gross Alpha minus Rn & U MDC ND mg/L 460 mg/L 528 mg/L 18 mgiL 0.2 mg/L 155 mg/L ND mg/L NO mg/L 12.1 mg/L 360 mg/L 2220 mg/L 6.79 s.u. 3590 mg/L ND ug/L ND ug/L 1.06 ug/L ND ug/L ND ug/L ND uglL ND ug/L ND ug/L 2020 ug/L NO ug/L ND ug/L ND ug/L ND ug/L ND ug/LND ug/L ND ug/L 62.4 ug/LNO ug/L15 ug/L A2320 B 42320 B E200.7 A4500-Cl B A4500.F C E200.7 E350.1 E353.2 E200.7 E200.7 A4500-SO4 E A4500-H B A2540 C E200.8 E200.8 E200.8 E200.8 E200.E E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 08/08/08 20:43 I t1l 08/08/08 20i43 llil 09/16/08 15:19 / cp 08/1 1/08 09:39 / sp 08/1 1/08 14:38 / ljl 09/16/08 15:19 / cp 08/1 1/08 1'l:06/eli-b 08/1 3/08 13:55 / elib 09/16/08 15:19/cp 09/'16/08 15:19 / cp 08/14108 15:57 /jal 08/08/08 15:44 I jah 08/11/08 14:22ljah 08/1 3108 23:57 t ls 0826/08 13:18lts 0&13/08 23:57 I ts 08/1 3/08 23:57 / ts 08/1 3/08 23:57 I ls 08/1 3/08 23:57 / ts 08n5nB 21 :43 / sml 08/1 3/08 23:57 I ts 08125/08 21:43 / sml 08/19/08 03:03 / sml 08/1 3/08 23:57 / ts 08/1 3/08 23:57 / ts 08/1 3/08 23:57 / ts 08/20/08 17:20 / sml 08/1 3/08 23:57 I ts 08/13/08 23i57 I ls 08/1 3/08 23:57 I ts 08/13/08 23:57 I ts 08/1 3/08 23:57 I ls 09/03/08 09:32 / cru 09/03/0E 09:32 / crw 09/03/08 09:32 / crw 0.01 10 5.0 0.50 0.50 25 10 10 30 1.0 10 0.50 10 20 5.0 10 0.50 100 0.30 15 10 I 1.2 0.4 0.3 pCi/L pCi/L pCilL Report Definitions: RL - Analyte reporting limit. QCL - Quality mntrol limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. NO - Not deteqted at the reporting limit. D - RL increased due to sample matrix interference. ENERGY LABOEATORIES, lNC. . 2393 Salt Creek Highway (8260/) ' PO. Box 3258 , Caspet WY 82602 TollFree888.235.0515 . 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com'wrvw:energylab.com LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-002 MW14 Report Date: 09/18/08 Collection Date: 08/06/08 15:10 DateReceived: 08/08/08 Matrix: Aqueous Analyses Result Units Qualifiers RL MCU QCL Method Analysis Date / By DATA QUALITY A/C Balanc€ (t 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chlorornethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Sun: ToluenedS 0.745 % 54.3 meq/L 55.1 meq/L 3530 mg/L 1.02 ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/L ND ug/L 113 %REC 112 %REC 108 %REC 95.0 %REC Calculation Galculation Calculation Calculation Calculation sw82608 sw82608 sw8260B SW826OB sw8260B SW82608 sw8260B sw8260B SW82608 sw8260B SW826OB sw82608 sw8260B sw8260B 09/1 7/08 16:48 / sdw 09117108 16:48 / sdw 09/17108 16:48 / sdw 09/17108 16:48 / sdw 09/1 7/08 16:48 / sdw 08112108 16:14 / jlr 08112t08 16:14 / jlr Ogl12l08 16t141jb 08t12108 16:14 tilr 0il1a08 16:14 t jte 08/12108 16:14tik 08n?J08 16:14 lilr 08112108 16:14 ljlr o8l12l08 16:14 ljlr 08112108 16:14 ItE OA1A08 16:14 tjt 0Et1210816:14 tit 08112108 16:14 lilr 08/1 2/08 16i'14 t ik ?o 1.0 1,0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-1 20 70-130 80-120 80-120 Report Oeflnitlons: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concenlration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. I ENEBGY LABORATOBIES, lNC. . 2393 Sall Creek Highway (82601) ' P.O. Box 3258 ' Casper WY 82602 Toll Free888.235.0515 , 307.235.0515 , Fax 307.234. 1639 . casper@energylab.com, www:energylab.com I t LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater C080803,+4-003 MW23 Report Date: Collection Date: DateReceived: Matrix: 09/18/08 08/05/08 15:23 08/08/08 Aqueous I Analyses Result Units Qualifiers RL MCU QCL Method Analysis Date / By pCilL pCi/L pci/L I I I I t t I I t I I I MAJOR IONS parbonate as CO3 / Bicarbonate as HCO3/ c^t iu^ . / chtoride l/ Ftuoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate ND mgiL 260 mg/L 4U mg/L 6 mg/L O.2 mg/L 156 mg/L ND mgiL O.27 mg/L 10.5 mg/L 396 mg/L 2270 mgl 6.80 s.u. 3640 mg/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/LND ug/L ND ug/L18E ug/LND ug/L ND udl ND ug/L ND ug/L ND ug/L 0.82 ug/LND ug/L 14.6 ug/LND ug/L26 ug/L 2.5 0.5 0.3 A2320 B 42320 B E200.7 A4500-Ct B A4500-F C E200.7 E350.1 E3s3.2 e200.7 E200.7 44500-504 E E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 8200.8 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 08/0€l/08 20:50 / ljl 08/08/08 20:50 / ljl 09/1 6/08 15:23 I cp 08/11/08 09:41 / sp 0E/1 1/0E 14:41 lljl 09/16/08 15:23t cp 08/11/08 11:07/eli-b 08/13/08 13:56/eli-b 09/1 6/08 15:23 I cp 09/16/08 15:231 cp 08/14/08 16:00 /jal 08/14/08 00:03 / ts 08/26/08 13:25 / ts 08/19/08 03:09 / sml 08/14108 00:03 / ts 08/14/08 00:03 / ts 08/14108 00:03 / ts 09/1 6/0E 15:23 I cp 08/14/08 00:03 / ts 08114108 00:03 / ts 08114t08 00:03 / ts 08/14108 00:03 / ts 08/1 4/08 00:03 / ts 08114108 00:03 / ts 08/20/08 17:52 / sml 08/14108 00:03 / ts 08/14/08 00:03 / ts 08/'t4108 00:03 / ts 08/14/08 00:03 / ts OBll4lOA 00:03 I ts 09/03/08 09:32 / crw 09/03/08 09:32 / cnn 09/03/08 09:32 / ctw 1.0 1.0 o.52 1 0.1 0.50 0.1 0.05 0.50 3.8 30 0.01 10 5.0 0.50 0.50 25 10 10 30 1.0 10 0.50 10 20 5.0 10 0.50 't 00 0.30 15 10 PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ 180 C METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium ,,Cobalt Copper lron Lead Manganese Merqiry Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC A4500-H B 08/08/08 15:46/jah A2540C 08/11/08 14:23 liah Report Deflnitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximlm contaminant level. ND - Not detected at the reporting limit_ D - RL increased due to sample matrix interference,T I I I ENERGY LABOfrATORIES, lNC. ' 2393 Salt Creek HEhway (82601)' PO. Box 3258 ' Caspet WY82602 To/1 Free888.235.0515 , 307.235.0515 . Fax 307.234.1639 ' casper@energylab.com'www.energylab.com t I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-003 MW23 Report Date: 09/18/08 Collection Date: 08/05108 15:23 DateReceived: 08/08/08 Matrix: AqueousI Analyses Result Units Qualiflers RL MCUOCL Method Analysis Date / By I I I I I t I I I I I I /DATAQUALITY / n" Batance (r 5) t/ AnionsY Cations 2.58 0/o 51.7 meq/L 54.5 meq/L 3470 mg/L 1.05 ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L 114 %REC 121 %REC 108 %REC 95.0 %REC Calculation Calculation Calculation Calculation Calculation SWE26OB SW826OB SW626OB sw8260B SW826OB SW826OB sw8260B sw8260B sw8260B sw8260B SW826OB SWEz6OB SW826OB SW826OB 09/17108 16:49 / sdw 09/17l0E 16:49 / sdw 09/1 7/08 16:49 / sdw 09/1 7/08 1 6:49 / sdw 09/1 7/08 16:49 / sdw OBl12l0E 16:52 ljt 08112108 16:521jtr 08112108 16:521jtr OU1A08 16:52 t itt 08r/12108 16:52ljk 0V12ng 16:52 I jlr 08112t08 16:52 / jlr 08112t08 16:52 ljk 08t12t08 16:52 / jlr 08112108 16i521 it 0il1?08 16:52 ljn 0E/17J08 16:52 / jlr OillAoB 16152 tit Oil1Z08'16:52 I ytr i J Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Sur: Dibromofl uoromethane Surr: p-Bromofl uorobenzene Surr: Toluene-d8 20 1.0 1.0 1.0 1.0 20 1.0 '1.0 1.0 't.0 80-120 70-130 80-120 80-120 I I I Report Derinitions: RL - Analyte repofiing limit. QCL - Ouality control lirnit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit, I ENERGY LABORATORIEA lNC. ' 2393 Salt Creek Highway (82601) , PO. Box 3258 , Casper, WY 82602 Toll Free888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com. www.energylab.com I t LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-004 MW24 Report Date: Collection Date: DateReeEived: Matrix: 09/1 8/08 08/07/08 07:30 08/08/08 AqueousI Analys6s Result Units Quallfiers RL MCU QCL Method Analysis Date / By mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L pCilL pCi/L pCilL I I I I I I I I I t t I MAJOR IONS /barbonate as CO3 / Bicaroonateas HCO3 / catcium V chtoride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate ND 270 492 39 0.'l 181 0.6 0.09 13.0 514 2730 6.75 s.u. 4270 mg/L ND ug/L ND ug/L 0.88 ug/LND ug/L ND ug/LNO ug/L 1360 ug/L ND ug/L 2730 ug/L ND uglL ND ug/L27 ug/L ND ug/L ND ug/L 0.65 ug/L ND ugiL 0.67 ug/L ND ug/L 32 uS/L '1.2 0.4 0.3 42320 B A2320 B E200.7 A4500-ct B 44500-F C E200.7 E350.1 E353.2 E200.7 E200.7 A4500-SO4 E E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200_8 E900.1 E900.1 E900.1 08/08/08 20:57 I $t 08108/08 20i57 I tll 09/16/08 15:27 I cp 081/1 1/0E 09:42 / sp 08/1 1/08 14144 t \l 09/16i08 15:27 I cp 08/1 1/08 11:08/eli-b 08/13/08 13:57 / eli-b 09/16/08 15:27 I cp 09116/08 15:27 I cp 08/'14108 16:12lial 1.0 1.0 0.52 1 0.1 0.50 0.1 0.05 0.50 3.8 30 0.01 10 5.0 0.50 0.50 25 10 10 30 1.0 1o 0.50 '10 20 5.0 10 0.50 100 0.30 15 10 PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ 180 C METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIONUCLIDES - DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC A4500-H B 08/08/08 15:47 liah P2540C 08/11/0808:28/dd 0U14108 00:10 / ts 08/26/08 13:32/ts 08/14/08 00:10 / ts 08/14108 00:10 / ts 08t14108 00:10 / ts 08/14/06 00:10 / ts 09n6/08 15:27 lcp 08/14/08 00:10 / ts 08/25108 21:57 I sml 08114t08 00: 10 / ts 08114108 fl}10 /ts 08/14/08 00:10 / ts 08114108 00:10 / ts 08DUA817:59 / sml 08/14/08 00:10 / ts 08114108 00:10 / ts 08/1 4/08 00:1 0 / ts 0U14108 00:10 / ts OAll4lOE 00:10 / ts 09/03/08 09:32 / cnr 09/03/08 09:32 / crw 09/03/08 09:32 / crw I I I Report Defanitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. NO - Not detecled at the reporting limit. D - RL increased due to sample matrix interference. t ENERGY LABORATORIES, lNC. . 2393 Salt Creek Highway (82601). PO. Box 3258 , Cesq,et WY82602 TollFree888.235.0515 , 307.235.0515 ' Fax 307.234.1639 . casper@energylab.com'www.energylab.com I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-004 MW24 Report Date: 09/1 8/08 Collection Date: 08/07/08 07:30 DateReceived: 08/08/08 Matrix: Aqueous I Analyses Result Unlts Qualifiers RL MCUOCL Method Analysis Date / By T I t I t I I I I I t t DATA QUAUTY A/C Balance (t 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: Toluena.dS -0j47 %62.4 meq/L 62.2 meq/L 4120 mg/L 1.04 ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L 114 %REC 119 ToREC 105 o/oREC 95.0 %REC Calculation Calculation Calculation Calculation Calculation sw82608 SW826OB sw8260B SW8260B sw8260B SW82608 SW8260B sw8260B SW826OB sw8260B SW8260B sw8260B sw82608 sw8260B 09117108 16:50 / sdw 09117108 16:50 / sdw 09/17108 16:50 / sdw 09117108 16:50 / sdw 09/17108 16:50/sdw 08/12108 17:31 lilr 08t12108 17:31 lin 08112108 17:31 lilr 08112108 17i31 I jlt 0il1?i08 17:31 t ik 08t12108 17i31 tilt 0il1?/08 17:31 I jlr 081'12108'17:31 ljlr 08/1A08'17:31 lilr 08/1208 17:31 ljh 0811U08 17:3'l t jlr 08112108 17:31 lilr 08t1U0E 17:31 lifi 0811U08 17:31 ljk 20 1.0 1.0 1.0 1.0 20 1.0 't.0 1.0 1,0 80-1 20 70-1 30 80-120 80-120 I I I RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detec{ed at the reporting limit, t ENERGY L,ABORATORIES, INC. ' 2393 Sall Creek Htghway (82601) ' P.O. Box 3258 ' Caspet WY 82602 To/1 Free868.235.0515 . 307.235.0515 . Fax 307.234.1639 ' casper@energylab.com'www.energy/ab.com I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-005 MW25 ,r/ Report Date: 09/18/08 Collection Date: 08/04108 15:53 DateReceived: 08/08/08 Matrix: Aqueous I Analys6s Result Units Qualifiers RL MCUQCL Method Analysis Date, By pCi/L pCi/L pCi/L I I t I I I I t I I I I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate , PHYSICAL PROPERTIES /pa / Solids, Total Dissolved TDS @ 180 c METALS - DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc MDIONUCLIDES - DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC ND mg/L400 mg/L 391 mg/L 28 mg/L 0.3 mg/L 134 rng/L 0.4 mg/L ND mg/L 10.0 mg/L 310 mg/L 1710 mg/L 6-85 s.u. 2700 mg/L NO ug/L ND ug/L 1.27 ug/L ND ugiL ND ug/LND ug/L ND ug/LNO ug/L 1650 ug/L ND ugiL 11 ug/L ND uS/L ND ug/L ND ug/L 0.86 ug/L ND ug/L 5.56 ugiLND ug/LND ug/L 1.2 0.4 0.3 A2320 B I.23208 8200.7 A4500-ct B A4500-F C E200.7 E350.1 E353.2 E200.7 E200.7 A4500-SO4 E 08/08/08 21:04 I ljl 08/08/08 21:04 ttit 09/16/08 16:15/cp 08/1 1/08 09:47 / sp 08/11/08 14i47 lt;ll 09/16/08 16:15/cp 08/11/08 11:'10 i eli-b 08/13/08 14:11 I eh-b 09/16/08 16:15/cp 09/16/08 16:15/cp 08114108 16: 13 / jal 1.0 1.0 0.52 I 0.1 0.s0 0.1 0.05 0.50 3.8 30 0.01 10 5.0 0.50 0.50 25 10 10 30 1.0 10 0.50 10 20 5.0 10 0.50 100 0.30 15 10 E200.8 E200.8 E200.8 8200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 A4500-1"'l B 08/08/0E 15:49 / jah A25/,OC 08/11/08 14:24 I jah 08/14/08 02:26 / ts 08t14t08 02'26 lts 08114t08 02:26 I ts 08/14108 02:26 / ts 08/14108 02:26 / ts 08/1 4/08 02:26 / ts 08/15/08 00:30 / sml 08114108 02:26 / ts 08/15/08 00:30 / sml 08/14l0E 02:26 / ts O8/14108 02:26 / ts 08/14108 02:26 / ts 08114/08 02:26 / ts 08/15/0E 00:30 / sml 08114108 02:26 / ts 08t14108 02:26 / ts 08/'14108 02:26 lts 08/14108 Q2:26 I ts OEll4toB 02:26 / ts 09/03/08 09:32 I cnv 09/03/08 09:32 / cnv 09/03/08 09:32 / crw t I t Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detecied at the reporting limit. D - RL increased due to sample matrix interference. ENERCY LABORATOBIES, lNC. ' 2393 Salt Creek Highway (82601)' PO. &ox 3258 , Casper, WY82602 TollFree888.235.0515 . 307.235.0515 ' Fax 307.234.1639 . casper@energylab.com. www.energylab.com LABORATORY ANALYTICAL REPORT Client: Project: Lab ]D: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater C080803,1+005 MW25 Report Date: 09/1 8/08 Collection Date: 08/&/08 15:53 DateReceived: 08/08/08 Matrix: Aqueous Result Units Qualifiers RL Method Analysls Oate / By MCU QCL DATA QUALITY A/C Balance (t 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Mehylene chloride Naphthalene Toluene Xylenes, Total Sur: 1,2-Dichlorobenzened4 Surr: Dibromofluoromethane Surr: p-Bromofl uorobenzene Surr: Toluen+d8 1.50 o/o 43.0 meq/L44.3 meq/L 2790 mg/L 0.970 ND ug/L ND ug/L ND ug/L ND ug/L NO uglL ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L113 %REC 111 %REC 106 %REC 93.0 o/oREC Calculation 09/17108 16:50 / sdw Calculation 09/'17108 16:50 / sdw Calculation 09117108 16:50 / sdw Calculation 0911710E 16:50 / sdw Calculation 09117lOB 16:50 / sdw 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-130 80-1 20 60-120 sw8260B SW826OB SW82608 SW826OB sw8260B sw8260B sw8260B sw8260B sw82608 sw8260B sw8260B sw82608 sw8260B sw8260B 0U12/08 18:10 / jlr 08112108 18:10 / jlr 08t12t08 18:10 ljlr 08nZ08 18:10 /ilr 08/12108 18:10/ih 08112t0818:'10/jlr 08/12108 18:10/jlr 08112108 18:10 / jk 08112108 18:10 / jtr 08/12108 18tA tjh 081'1U08 18:10 / jk 08112108 18:10 / jlr 0811210818:10/jlr 0U1?J08 18:10 / jlr Report Definitlons: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximurn contaminant level. ND - Not deteded at the reporting limit. I ENERGY LAOORATOBIES, lNC. . 2393 Sall Creek Highway (82601)' PO. Box 3258 ' Caspe4 WY82602 To/l Free888.235.0515 , 307.235.0515 . Fax 307.234.1639 ' casper@energylab.com'www.energylab.com t I LABOMTORY ANALYTICAL REPORT Client: Projoct: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-006 MW27 ReportDate: 09/18/08 Collection Date: 08/06/08 12:36 DateReceived: 08/08/08 Matrix: Aqueous I Analyses Result Units Qualifiers RL MCUOCL Method Analysis Date / By mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L pCi/L pCi/L pCi/L I I I I I I I I I I I I MAJOR IONS Cadonate as CO3 Bicarbonate as HCO3 Calcium Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate 7 PHYSICAL PROPERTIES /oa V Solids, Total Dissolved TDS @ 180 C METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIONUCUDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC NO 440 186 40 o.7 81.2 ND 5.83 4.52 77.9 456 7.37 s.u. 1100 mg/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/LND ug/L ND uglL ND ug/L ND ug/L ND ug/L 10.3 ug/L ND ug/LND ug/L ND ug/L 31.5 ug/L ND ug/LND ug/L 2.1 0.5 0.3 M32OB A2320 B E200.7 A4500-Cl B A4500-F C E200.7 E350.1 E353.2 E2AO.7 E200.7 A4500-SO4 E E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.E E200.8 E200.8 E900.1 E900.1 E900.1 08/08/08 21:25 ltil 08/08/08 2't:25 I l1l 09/16/08 16:19/cp 08/1 1/06 09:49 / sp 08/l1l08 14:50 / ljl 09/1 6/08 16:1 9 / cp 08/11/08 11:11 /eli-b 08/13/08 'l4i12l eli-b 09/16/08 l6:19/cp 09/16/08 15:19/cp 08114108 16:15 /jal 08/1 4/08 02:33 / ts 08114108 02:33 / ts 08/14108 02:33 / ts 08/14/08 02:33 / ts 08/14108 02:33 / ts 0E114108 02:33 / ts 08/15/08 00:36 / sml 08/14108 02:33 / ts 08114108 02:33 / ts 08/14108 02:33 / ts 08/'14108 02:33 / ts 0U14|AB 02:33 / ts 08/14/08 02:33 / ts 08/20/08 18:05 / sml 08h4nE 02:33 / ts 06/14/08 02:33 / ts oEn 4/0E 02:33 / ts 08/1 4/08 02:33 / ts OEn4/08 02:33 / ts 09/03/08 09:32 / crw 09103/08 09:32 / cru 09/03/08 09:32 / crw 1.0 1.0 0.50 1 0.1 0,50 0.1 0.05 0.50 1.5 10 0.01 10 5.0 0.50 0.50 25 10 10 30 1.0 10 0.50 10 20 5.0 10 0.50 100 0.30 15 10 A4500-H B 0E/08/08 15:53 /jah A2il0 C 08/1 1/08 14:24 I iah I I I Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not deteded at the reporting limit. D - RL increased due to sample matrix interference. I ENERGY LABORATORIES, lNC. ' 2393 Salt Creek Highway (82601) ' P0. 1ox 3258 . Casper WY 82602 Toll Free 888.235.0515 ' 307.235.0515 ' Fax 307.234. /639 ' casper@energylab.com . wwwenergylab.com t I LABORATORY ANALYTICAL REPORT Client: Project: Lab lO: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-006 MW27 Report Date: 09/18/08 Collection Date; 08/06/08 12:36 DateReceived: 08/0E/08 Matrix: AqueousI Analyses ReEult Units Qualifiee RL MCUQCL Method Analysis Date / By I I I I I I I I I I t I DATA QUALITY tuC Balance (t 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone $enzene 3.06 0h 18.3 meq/L 19.5 meq/L 1110 mg/L 0.990 ND ug/L ND ug/L ND ug/L ND ug/LNO ug/L ND ug/L ND ug/L ND ug/L ND ug/LND ug/L 110 %REC 110 %REC'lo4 %REC 95.0 %REC Calculation Calculation Calculation Calculation Calculation SW826OB SW82608 SW8260B sw62608 SWE260B SW826OB SW82608 SW826OB sw82608 SW826OB sw8260B sw8260B SWE26OB SW62608 09117108 16:51/sdw 09/17108 16:51 /sdw 09/17108 16:51 /sdw 09/17108 16:51 /sdw 09117108 16:51 / sdw ogl12l08 18:49 tjtr 08/1 2/08 1 8:49 / jlr 08112108 18:49 / jlr oill12l08 1E:49 / jlr 0811U08 18:49 / jlr 08112108 16:49/jk Agl12l08 18:49 tjt 08/1 2/08 1 8i49 / jk 08112108 18:49 t jlr 08t12t08 18:49 / jlr 08112108 18:49 / jlr 08112108 18:49 / jlr 08112108 18:49 litr 08112t08 '18:49 / jlr r harbontetrachloridet/ l-/ Chlorofotm Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofl uorobenzene Surr: Toluene{8 20 1.0 't.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-1 30 80-120 80-120 Repoft Oefinitions: RL - Analyte reporting limit. QCL - Quality control lirnit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detecled at the reporting limit.I I I I ENERGY LABO&A1OBES, lNC. . 2393 Sa/t Creek Highway (82601)' PO. Box 3258 ' Caspet WY 82602 Toll Free 888.235.0515 ' 307.235.0515 ' Fax 307.234./639 ' casper@energylab.com' www.energylab.com I I Client: Project: Lab lD: Client Sample lD; LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-007 MW28 Report Date: 09/18/08 Collection Date: 08/06/08 09:43 DateReceived: 08/08/08 Matrix: Aqueous t Result Units Qualifiers RL MCUQCL Method Analysis Date / ByAnalyses I I t I I I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ 180 C METALS. DISSOLVED A,senic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC ND mg/L160 mg/L 546 mg/L 99 mg/L 0.6 mg/L 179 mg/L ND mg/L 0.18 mg/L 1 1.5 mg/L 311 mg/L 2340 mg/L 6.24 s.u. 3590 mg/L 14.8 ug/L ND Ug/L 3.42 ug/L ND ug/L 27 ug/L ND ug/L 42 ug/L ND ug/L 1530 ug/LND ug/L ND ug/L 29 ug/L ND ug/LND ug/L 0.79 ug/L ND ug/L 3.15 ug/L ND ug/L44 ug/L 1.8 0,5 0.3 42320 B A2320 B e200.7 A4500-Cr B A450&F C E.200.7 E350.1 E353.2 E2A0.7 E200.7 A4500-SO4 E 1.0 1.0 o.52 1 0.1 0.50 0.1 0.05 0.50 3.8 30 0.01 10 5.0 0.50 0.50 25 10 10 30 1.0 10 0.50 't0 20 5.0 10 0.50 100 0.30 15 10 8200.8 E200.8 E200.8 8200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E900.1 E900.1 E900-r A4500-H B 08/08/0E '15i54 t iah A2540 C 08/11/08 15:40/jah 08/08/08 21:32 lll 08/08/08 21:321ltl 09/16/08 16:23/cp 08/1 1/08 09:50 / sp 08/11/08 14:52ltjt 09/1 6/08 16:23 I cp 08/11/08 11:14/eli-b 08/13/08 14:14 I elit-b 09/16/08 16i23 I cp 09/16/06 16:23 /cp 08/14/08 16:17 tiat 08/14/06 02:40 / ts 08/14/08 02:40 / ts 08/14l0E 02:40 / ts 0811410E 02:40 / ts 08/14108 02:40 / ts 08/14108 02:40 / ts 09/16/08 16:23 / cp 08114108 02:40 / ts 08/19/08 03:29 / sml 08/14108 02:40 / ts 08/14/08 02:40 / ts 081'14/08 02:40 / ts 08/19/08 03:29 / sml 08/20/08 18:12 / sml OBl14l08 02:40 / ts 08/1 4/08 02:40 / ts 08/t4108 02:40 / ts 08/14rc8 02:40 lls Ogll4l0g 02:40 / ts 09/03/08 09:32 / crw 09/03/08 09:32 / crw 09/03/08 09:32 / crw t/ lt i J I I I I pCi/L pCa/L pCi/L Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference.I I I I ENERGY LABORATORES, lNC. ' 2393 Salt Creek HEhway (82601) ' PO. Box 3258 ' Caspet WY 82602 TollFree888.235.0515 , 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com'www.energylab.com I I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-007 MW28 Report Date: 09118/08 Collection Date: 08/06/08 09:43 DateReceived: 08/08/08 Matrix: Aqueous Analyses Result Units Qualifiers RL MCUOCL Method Analysis Oate / By I I I I I I I I I I I I DATA QUALITY A/C Balance (t 5) Anions Cations Solids, Total Dissolved Calculated TOS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS 1.64 % 54.0 meq/L 55.8 meq/L 3580 mg/L 1.00 ND ug/L NO ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/LND ug/L 111 %REC 112 %REC't06 %REC 95.0 %REC Calculation Calculation Calculation Calculation Calculation SW82608 SW8260B SW82608 sw8250B sw8260B SW82608 SW8260B sw8260B SW8260B sw8260B SW826OB sw8260B SW826OB sw8260B 0S/17108 16:51 / sdw 09/17108 16:51 / sdw 09/17108 16:51 /sdw 09/17108 16:51 / sdw 09117108 16:51 / sdw 08/12l0E 23:21 ljlr 08t1210823:21 ljtr 0811210823i21 ljlt 08t12t0823:21 tltr 0il1z0823:21 ljk 0il1?i0823:21 t1fi 0811?/0823:21 tik 08112t08 23:21 I jtr 08t12t0823i21 tii 08t12t0823:U tjn 08t1U0823:21 tlt 0811210823:21 ljlr 0811210823i21 lil( 08t12t08 23:21 tin Acetone /B"nrene / Caraontetrachloride I / chtoroformv chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr:'1,2-Dichlorobenzened4 Surr: Dibromof luoromethane Surr: p-Bromofl uorobenzene Surr: ToluenedS 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-1 30 80-120 80-1 20 I I I Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit I ENERGY LABORATORIES, lNC. . 2393 Salt Creek Highway (82601) ' PO. Box 3258 ' Casper; WY 82602 To//Free888.235.0515 . 307.235.0515 . Fax 307.234.1639 ' casper@energylab.com'www.energylab.com I I I LABORATORY ANALYTICAL REPORT Client: Project: Lab ]D: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-008 MW29 Report Date: 09/18/08 Collection Date: 08/05/08 08:57 DateReceived: 08/08/08 Matrix: Aqueous Analyses Result Units Oualifiers RL MCU QCL Method Analysis Date / By pCi/L pCi/L pCYL ,l t I t I I I I I t I T I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium .'Chloride n' Fluoride I s/ Magnesium U Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate , PHYSICAL PROPERTIES /Pn l/ Solids, Total Dissolved TDS @ 180 C METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RAOIONUCLIDES . DISSOLVED ' Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC ND mg/L 330 mg/L 524 mg/L 35 mg/L0.8 mg/L 238 mg/L 0.5 mg/L ND mg/L 17.5 mg/L 494 mg/L 2810 mg/L 6.71 s.u. 4340 mg/L ND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/L 1720 ug/L ND ug/L 4980 ug/LND ug/L ND ug/L ND ug/L ND ug/LND ug/L NO ug/LND ug/L 10,4 ug/L ND ug/L22 ug/L 1.8 0.5 0.3 42320 B 4'2320 B E200.7 44500-Ct B A4500-F C E200.7 E350.1 E353.2 E200.7 E200.7 A4500-SO4 E A4500-H B A2540 C E200.8 E200.8 E200.8 8200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 8200.8 E200.8 E900.1 E900.1 E900.1 0€U08/08 21i38 t U 08/0E/0E 21:38 / ljl 09/16/08 16:27 I cp 08/1 1/08 09:53 / sp 08/1 1/08 15:03 / ljl 09/16/08 16:27 I cp 08/1 1/08 11:17leli-b 081/13/08 '14:15 / eli-b 09/16/08 16:27 I cp 09/16/08 16t27 I cA 08/14/08 16:18 /jal 06/08/08 15:56/jah O€U1 1/08 15:40 /jah 08/14108 02:46 / ts 08/14/08 02:46 / ts 08/14108 02:46 / ts 08/1 4/08 02:46 / ts 08/14/08 02:46 / ts 08/14108 02:46 / ts 09/16/06 16:27 I cp 08/19/08 04:14 / sml 08/14/08 02:46 / ts OU14l08 02:46 / ts OAl14l08 02:46 / ts OBll4lOB 02:46 / ts 08/14/08 02:46 / ts 08120/08 18:31 /sml 08/14i08 02:46 / ts 08/14108 02:46 / ts OBl14l08 02:46 / ts 08/14/08 02:46 / ts Oel/l4/08 02:46 / ts 09/03/08 09:32 / crw 09/03/08 09:32 / crw 09/03/08 09:32 / cniv 1.0 1.0 0.52 1 0.1 0.50 0.1 0.05 0.50 3.8 30 0.01 10 5.0 0.50 0.50 25 10 10 30 1.0 10 0.50 10 20 5.0 10 0.50 't00 0.30 15 10 I I t Report Definitions: RL - Analyte reporting limit. QCL - Quality conkol limit. MDC - Minimum detectable con@ntration MCL - Maximum contaminant level. NO - Not detected at the reporting limit. D - RL increased due to sample matrix interference. I ENERGY LAEORATORIES, fiilc , 2393 Salt Creek Highway (82601) . PO. 1ox 3258 , Caspq WY82602 folFree888.235.05/5 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com, www:energylab.com I I I LABOMTORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c0808034+008 MW29 Report DatE: 09/18/08 Collection Date: 08/05/08 08:57 DateReceived: 08/08/08 Matrix; Aqueous Analyses Result Units Qualifiers RL MCUQCL Method Analysis Oate / By / L/' I I I I I I I I I I t I DATA QUALITY A/C Balance (t 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone 1.99 %65.0 meq/L 67.7 meq/L 4310 mg/L 1.01 ND ug/LND ug/L ND ug/L ND ug/L NO ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L 110 %REC 115 %REC 106 %REC 94.0 o/oREC Calculation Calculation Calculation Calculation Calculation SWE260B sw8260B sw8260B sw82608 sw8260B sw8260B sw8260B SW826OB sw8260B SW826OB sw8260B SW826OB sw82608 SW826OB 09/1 7/08 16:52 / sdw 09/1 7/08 l6:52 / sdw 09/17108 16:52 / sdw Ogl17l08 16:52 / sdw 09117n8 16:52 / sdw 08/1 3/08 00:02 I ik 08/1 3/08 00:02 I jk 0E/1 3/08 00:02 / jlr 08113/0E 00:02 I itr 08/13/08 00:02 /jlr 08/13/08 00:02 /jlr 08/1 3/08 0002 t jlr 08/1 3/08 00:02 / jlr 08/1 3/08 00:02 t jk 08/1 3/08 00:02 / jlr 08/13/08 00:02 /jlr 08/13/08 00:02 /,lr 08/13/08 00:02 t jtt 08/13/08 00t02 I tL Benzene / C"rtontekachtoridei ^/ chloroform V chbromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: l,2.Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Sur: Toluene-d8 ?0 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1,0 80-120 70-130 80-120 80-120 I I I Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting timit. I ENEFGY LABOHAfiOBIES, lNC. . 2393 Salt Creek Hrghway (82601) , PO. Box 32i8 , Caspet; WY A2602 Toll Free 888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com, www.energylab.com I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-009 MW30 Report Date: 09/18/08 Collection Date: 08/04/08 11:12 DateReceived: 08/08/08 Matrix: Aqueous t Analyses Result Units Qualifiers RL MCU QCL Method Analysis Date / By lJ mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L ,l t I t I I pCi/L pgilL pCi/L I I t t I I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ 180 C METALS - OISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Merqrry MolyMenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC ND 190 297 121 0.3 75.8 ND 17.3 7.64 115 831 1 0.4 0.3 1.0 1.0 0.50 1 0.1 0.50 0.1 0.05 0.50 1.5 30 0.01 10 5.0 0.50 0.50 25 10 10 30 1.0 10 0.50 10 20 5.0 10 0.50 100 0.30 15 10 7.19 s.u. 1640 mg/L 22.4 ug/L 1 1.8 ug/L 24.7 ug/L 299 ug/L 26 ug/L 73 ug/L 646 ug/L25.5 ug/L165 ug/L ND ug/L ND ug/L 109 ug/L 47.2 ug/L ND udL1.17 uglL ND ug/L11.0 ug/L 23 ug/L27 ug/L A2320 B 42320 B e200.7 A4500-Ct B A4500-F C E200.7 E350.1 E353.2 E200.7 8200.7 44500-504 E E200.8 E200.8 E200.8 E200.8 E200.8 E200.6 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 A4500-H B 08/08/08 16:00/jah A2540 C 08/1 1/08 08:28 / dd 08/08/08 22:04 I lil 08/08/08 22:04 ltil 09/16/08 16:31 /cp 08/1 1/08 09:54 / sp 08/1 1/08 15:06 / ljl 09/16/08 l6:31 /cp OBl11lO811:18 / ellb 08/1 3/08 14:26 / eli-b 09/16/08 16:31 /cp 09/16/08 16:31 /cp Ogl14l08 16:21 ljal 08/1 4/08 02:53 / ts 08/14108 02:53 / ts 08114t08 02:53 / ts 08t14t08 02:53 i ts 08/1 4/08 02:53 / ts 08/14108 02:53 / ts 08/15/08 @:55 / sml 08/1 4/08 02:53 / ts 08/14/08 02:53 / ts 08/14/08 02:53 / ts 08/14/08 02:53 / ts 08/14108 02:53 / ts 08114t08 02:53 / ts 08/15/08 00:55 / sml 08/14/08 02:53 / ts 08/14108 02:53 / ts 08/14108 02:53 / ts 08114t08 02:53 / ts o8l14loa 02:53 / ts 09/03108 09:32 / crw 09/03/08 09:32 / cnrv 09/03/08 09:32 / ctw I T I Report 0efinitions: RL - Analyte reporting timit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant tevel. ND - Not detected at the reporting timit. D - RL inoeased due to sample matrix interference. t ENEBGY LABORATOBIES, lNC. . 2393 Salt Creek Highway (82601) . PO. 1ox 3258 , Caspec WY82602 To/1 Free888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.con. www.energylab.com I I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD; Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-009 MW30 Report Date: 09/18/08 Collection Date: 08/04/08 11:12 DateReceived: 08/08/08 Matrix: Aqueous Analyses Result Units Qualifiers RL MCU QCL Method Analysis Date / By I I I I I I I I I I I I J/ DATA QUALITY tuC Balance (t 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Eenzene 2.46 o/o 25.0 meq/L 26.3 rneq/L 1640 mg/L 't.00 ND ug/L ND ug/L ND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/L ND ug/L NO ug/L 111 %REC 112 ToREC 105 %REC 95.0 %REC Calculation Calculation Calculation Calculation Calculation SW8260B SW826OB SW826OB sw8260B sw8260B SW826OB sw8260B sw8260B sw8260B sw8260B SW82608 sw8260B sw8260B SW826OB 09/17108 16:52 / sdw 09117108 16:52 / sdw 05117108 16:52 / sdw 09/1 7/08 1 6:52 / sdw 09117108 16:52 / sdw 08/1 3/08 00:43 /jlr 08/1 3/08 00:43 / jlr 0E/13/08 00:43 /ilr 08/13/08 00:43 /ilr 08/1U08 00:43 / jlr 08/1 3/08 00:43 / jk 08/1 3/08 00:43 / jlr 08/1 3/08 00:43 / jlr 08/13/08 00:43 /jlr 08/1 3/08 00:43 / jlr 08/1 3/08 00:43 / jk 08/1 3/08 00:43 / jlt 0E/1 3/08 00:43 / jk 08/1 3/08 00:43 / jlr /C"rbon tetrachloride , / chloroform V chtoromethane Methyl ethyl ketone Methylene chloride Naphthalene Ioluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofl uorobenzene Sun: Toluene-d8 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-l 30 80-1 20 80-120 T I t Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit, MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND . Not detected at the reporting limit. t ENERGY LABOBATORIES, lNC. ' 2393 Salt Creek Highway (82601) ' P.O. Box 3258 . Caspet; WY 82602 To/l Free 888.235.0515 , 307.235.0515 , Fax 307.234.1639 . casper@energylab.com. www.energylab.com I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-010 MW31 Report Date: 09/18/08 Collection Date: 08/04/08 13:34 DateReceived: 08/08/08 Matrix: Aqueous I Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date / By I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ 180 C METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Znc ,ilotouucr-tDES - DlssoLVED /" Gross Alpha minus Rn & U U Gross Alpha minus Rn & U Precision (r) Gross Alpha minus Rn & U MDC ND mg/L 210 mg/L 180 mg/L 124 mg/L 0.8 mg/L 88.3 mg/L ND mg/L 28.7 mg/L 6.07 mg/L 94.4 mg/L 499 mg/L 7.48 s.u. 1240 mg/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/LND ug/L ND ug/L 56.4 ug/L ND ug/L ND ug/L ND ug/L 6.77 ug/L ND ug/L13 ug/L 1.5 0.4 0.3 A2320 B 42320 B E200.7 44500-Ct B A4500-F C E200.7 E350.1 E353.2 E200.7 E200.7 A4s00-so4 E E200.8 E200.8 E200.8 E200,8 E200.8 E200.8 E200.8 8200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200-8 E900.1 E900.1 E900.1 08/0€r/08 22:10 I lil 08r/08/08 22:10 ltil 09/16/08 16:35/cp 0E/1 1/08 09:56 / sp 08/1 1/08 15:09 / ljl 09/16/08 16:35/cp 08/l1108 11:19/eli-b 08113/08 14:27 I ellb 09/16/08 16:35 / cp 09/16/08 16:35/cp 08/14/08 16:22lial 08/14108 03:00 / ts 08114108 03:00 / ts 08/14108 03:00 / ts 08114108 03:00 / ts 08/14i08 03:00 / ts OBl14108 03:00 / ts 08/1 5/08 01 :14 I sml 08/14/08 03:00 / ts 08/14108 03:00 / ts 08/14/08 03:00 / ts 08/14/08 03:00 / ts 08/14/08 03:00 / ts 08/14108 03:00 / ts 0E/15/08 0l:14 / sml 08/14/08 03:00 / ts 08/14/08 03:00 / ts 08/14/08 03:00 / ts 08/14108 03:00 / ts Ogl14t0E 03:00 / ts 09/03/08 09:32 I crw 09/03108 09:32 / clw 09/03/08 09:32 / crw 1.0 1.0 0.50 1 0.1 0.50 0.1 0.05 0.50 1.5 10 0.01 10 5.0 0.50 0.50 25 '10 10 30 1.0 't0 0.50 10 20 5.0 10 0.50 100 0.30 15 10 l,l pCi/L pCi/L pCi/L I I t T I t I I I I A4500-H B 08/08/08 16:02 I iah A2540 C 08/1 1/08 08:29 / dd I I I Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting lirnit. D - RL increased due to sample matrix interference I ENERGY LABORATOBIES, lNC. , 2393 Salt Creek Highway (82601) . P.O. 1ox 3258 . Casper, WY 82602 TollFree888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energy/ab.com. www.energylab.com I I LABOMTORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-010 MW31 Report Date: 09/18/08 Collection Date: 08/04/08 13:34 DateReceived: 08/08/08 Matrix: Aqueous I Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date / By I I I I I I I t I I I I DATA QUALITY NC Balance (t 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATI LE ORGANIC COMPOUN DS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofl uorobenzene Surr: ToluenedS 2.8A 19.3 20.5 1240 1.00 ND ND ND ND ND ND ND ND ND ND 116 125 108 94.0 o/o meq/L meq/L mg/L Calculation Calculation Calculation Calculation Calculation SW826OB sw8260B sw8260B sw8260B SW826OB SW826OB sw8260B SW826OB SW826OB sw8260B SW826OB sw8260B SW826OB SW826OB 09/17108 16:53 / sdw 09/17108 16:53 / sdw 09/1 7/08 '16:53 / sdw 09117108 16:53 / sdw 09/17108 16:53 / sdw 08/1 3/08 01:22 I ilr 08/13/08 01:22 I jlr 08/1 3/08 01:22 I jlr 08/13i/08 01:22 tjE 08/1 3/08 01122 I it 08/1 3/08 01:22 I jh 08/1 3/08 01:22 I jk 08/1 3/08 01:22 I jn 08/'f 3/08 01:22 I jlr 0E/13/06 01:22 t itr 0B/13/0E 01:22 t jlr 08/1 3/08 01:22 I itr 08/1 3/08 01:22 t jt 08/1 3/08 01i22 t jE ug/L ug/L ug/L ug/L ug/L udL ugiL ug/L ug/L ug/L %REC %REC %REC %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-1 20 70-1 30 80-120 80-120 t t I Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detecled at the reporting limit. I ENERGY LAaORATORIEE lMc. . 2393 1at creek Highway (sz60t) , p,o. Box 3258 . caspet; wyaz602 Toll Free 888.235.0515 ' 307.235.0515 . Fax 307.234.1639 ,'casper@energylab.con. wwweheigylao.ioi- I t LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-01 1 MW 32 Revised Date: 11l24lOB Report Date: 09/18/08 Collection Date: 08/05/08 1 1:13 DateReceived: 08/08/08 Matrix: Aqueous I MCUQCL Msthod Analysis Date / ByAnalys6sResult Units Qualifier RL ri I I I I I I pCi/L pCUL pCi/L I I I I I t I I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate TPHYSlcAL PROPERTIES lpH lrl sotios, Totat Dissotved TDS @ 1ao C METALS - DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC Report Definitions: RL - Analyte reporting limit. QCL - Quality control timit. MDC - Minimum detectable concentrafion ND mg/L42O mg/L 550 mg/L 27 mg/LO.2 mg/L 246 mg/L 0.44 mg/L ND mg/L 14.9 mg/L 241 mg/L2470 mg/L 6.53 s.u. 3850 mg/L ND ugiL ND ug/L 2.77 ug/L ND ug/L 50 ug/L ND ug/L 9300 ug/L ND ug/L 5240 ug/LND ug/L 11 ug/L 66 ug/L ND ug/L NO ug/L ND ug/L ND ug/L 2.70 ug/LND ug/L 144 ug/L 2.6 0.5 0.3 42320 g A2320 B E200.7 A4500-Ct B A4500-F C E200.7 E350.1 8353.2 E200.t E200.7 A4500-SO4 E 1.0 1.0 0.52 1 0.1 0.50 0.10 0.05 0.50 3.8 30 0.01 10 5.0 0.50 0.50 25 10 10 30 1.0 10 0.50 10 20 5.0 10 0.50 100 0.30 15 10 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 e200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 A4500-H B 08/08/08 16:04 /jahA2s40C 08/'11108 15:40 t jah 08/08/08 22:31 lljl 08/08/08 22:31 ttit 09/16/08 16:44 I cp 08/1 1/08 09:58 / sp 08/1 1/08 15:18 I ljl 09/16/08 16:44 / cp 08/11/08 11:20/eli-b 08/13/08 14:28 I elt-b 09/15/08 16:44 I cp 09/16/08 16:44 I cp 08/14108 16124 I ial 08114108 03:07 / ts 08/14/08 03:07 / ts 08/14108 03:07 / ts 08/14/08 03:07 / ts OBl14l08 03:07 / ts OBl14t08 03:07 / ts 09/16/08 16:44 I cp 08/14/08 03:07 / ts 08/14/08 03:07 / ts 08114108 03:07 / ts 08/14108 03:07 / ts 08/14108 03:07 / ts 08/14i08 03:07 / ts 08/20/08 18:38 / sml 08114108 03:07 / ts 08114108 03:07 / ts 08/14108 03:07 / ts 08114t08 03:07 / ts 08/14/08 03:07 / ts 09/03/08 11:26 I crw 09/03/08 11:26 I cw 09/03/08 11:26lcrw MCL - Maximum contaminant level. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference. I ENEnGy LAE,BATOB,ES, rNC. '2393 Sa/!Creek Hlqlwav (s260r) . po. 80x 3258 . Caspe4 wy82602rot Free 888.23s.05t5 . s07.is5.056-:-Fax ibiii;:i65i".-t;;i;;6";;6y1:;*, . wwwenersytab.com t I t Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-01 1 MW 32 Revised Date: Report Date: Collection Date: DateReceived: Matrix: 11t24t08 09/18/08 08/05/08 11:13 08/08/08 nolous Analysis Date / By Analyses Result Units MCU QCL Method LABORATORY ANALYTICAL REPORT / Qualifier RL I I I t I I I t t t I t I I I DATA QUALITY A/C Batance (r S) Anions Cations Solids, Total Dissolved Calculated TDS Balance (O.BO - i.2O) VOLATTLE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene_d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: Toluene-dg -0.479 59.2 58.6 3770 't.o2 ND ND ND ND ND ND NO ND ND ND 115 127 104 96.0 o/o meq/L meq/L mg/L Calculation Calculation Calculation Calculation Calculation sw8260B SW826OB sw8260B sw8260B SW826OB SW826OB SW826OB SW826OB sw82608 SW826OB sw8260B SW826OB SW826OB sw8260B 0911710816:54 / sdw 09/17108 16:54 / sdw 09117108 16:54 / sdw O9ll7l08 l6:54 / sdw 09117108 '16:54 / sdw 08/13/08 02:03 t jk 08/13/08 02:03 I jtr 08/13/08 02:03 I jb 08/1 3/08 02:03 I jtr 08/13/08 02:03 t jtr 08/1 3/08 02:03 t jk 08/1 3/08 02:03 t jk 08t13t08 02:03 I jk 08/1 3/08 02:03 / jlr 08/13/08 O2:e3 t jtr 08/13/08 02:03 t jk 08/13/08 02:03 I jtr 08/1 3/08 o2:03 I jtr 08/13/08 02:03 I jtr ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L %REC %REC %REC %REC 20 't.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-1 20 70-'t 30 80-120 80-120 RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contarninant level_ ND - Not detected at the reporting limit. I ENEBGY LAAORATORTE_5,-NC . 2393 Sart Creek f/qQway 1s260r) po. Box 3258 " Casper, wy82602ro// Free 888.235'0515 ' s1z.is5.osrs : -iai i'oi.iii.ii1s :Aiiiid"ii6yE:b*, . www.enersytab.com I I T Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-012 MW 65 Revised Date: Report Date: Collection Date: DateReceived: Matrix: 11t24t08 09/18/08 08/05/08 11:13 08/08/08 Aqueous Analyses Result Units Qualifier MCUQCL MethodRL Analysis Date / ByI I T I I T I I I I T t t I I V MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ 180 C METALS. DISSOLVED ND mg/L420 mg/L 560 mg/L30 mg/L 0.2 mg/L249 mg/L0.46 mg/L ND mg/L14.9 mg/L 237 mg/L 2470 mg/L 6.48 s.u. 3710 mg/L ND ug/LND ug/L 2.7O ug/LND ug/L 51 ugilND ug/L9540 ug/LNO ug/L5360 ug/L ND ug/L11 ug/L 67 ug/LND ug/L NO ug/LND ug/L ND ug/L2.85 ug/LND ug/L143 ug/L 3.2 0.6 0.3 A2320 B 423208 E200.7 44500-Ct B A4500-F C E200.7 E350.1 E353.2 E200.7 E200.7 44500-so4 E 08/08/08 22:38 t t)t 08/08/08 22:38 t tjt 09/16/08 17:08 I cp 08/1 1/08 10:01 / sp 08/1 1/08 15:21 I tjt 09/16/08 17:08 / cp 08/l1108 11:21 I el-b 08/13/08 14:29 I etib 09/16/08 17:08 I cp 09/16/08 17i09 I cp 08114tOB 16:26 I jat 1.0 1.0 0.52 1 0.1 0.50 0.10 0.05 0.50 3.8 30 0.01 10 5.0 0.50 0.50 25 10 10 30 1.0 10 0.50 10 20 5.0 10 0.50 100 0.30 15 10 E200.8 E200.8 E200.8 E200.8 E200.8 E200 8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 A4500-H B 08/08/08 16:07 I jah42540C 08/11/08 15:40/jah Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIONUCLIOES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U precision (r) Gross Alpha minus Rn & U MDC Report Definitions: pCi/L pCi/L pCi/L Ogl14t08 03:54 / ts 08114108 03:54 / rs 08114108 03:54 / ts OAI'!4IOB 03:54 / ts 08114108 03:54 / ts 081't4108 03:54 / ts 09/16/08 't7:08 I cp 08/14108 03:54 / ts 08l14lOB 03:54 / ts 08t14t08 03:54 / ts 08114108 03:54 / rs 08114108 03:54 / ts OBl14l08 03:54 / rs 08120108 18:45 / smt 08114108 03:54 I ts 08114108 03:54 / ts 08114108 03:54 / ts OBl14l08 03:54 / ts OBll4lOB 03;54 / ts 09/03/08 11126 I cN,t 09/03/08 11:26 I cN 09/03/08 11:26 t cNv RL - Anatyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. D - RL increased due to sample matilxinterference. t I I I ENERG, LAAOBATO,ES, rNC. ' 2393 Salt Creek Hlqlwav (s260/) po. Box 3258 Casper; wy82602ro//Free88g.23s.0it5 . szzirs.oio-: Ei ibi.iii.iol's :utrizi6"ii;syn';*r.www.enersylab.com LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-012 MW 65 Revised Date: Report Date: Collection Date: DateReceived: Matrix: 11t24t08 09/18/08 08/05/08 1 1:13 08/08/08 Aqueous Analysis Date / By AFalyses MCUQualifier RL QCL MethodResultUnits I I t I T I T I I I t T I I I DATA QUALITY A/C Balance (r S) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - i.2O) VOLATTLE ORGANIC COMPOUNDS -0.096 59.3 59.2 3790 0.980 ND ND ND NO ND ND ND ND NO ND 'l 15 131 '105 95.0 Yo meq/L meq/L mg/L Calculation Calculation Calculatlon Calculation Calculation SW826OB SW826OB SW826OB SW8260B sw8260B sw8260B sw8260B sw8260B SW826OB SW826OB sw82608 sw8260B SW826OB sw82608 09117108 16:55 / sdw 091'l7lOA 16:55 / sdw 09117108 16:55 / sdw 09117t08 16:55 / sdw 0911710E 16:55 / sdw 08/1 3/08 02:44 t jt 08/1 3/08 02:44 I jtt 08/1 3/08 02144 I )n 08/1 3/08 02:44 I jk 08/1 3/08 02:44 I jt 08/1 3/08 02:44 I itr 08/1 3/08 0244 I in 08/1 3/08 02:44 t jt 08/1 3/08 02:44 I th 08/'13108 02:44 t jtr 08/1 3/08 02:44 t jt 08/13/08 02:44 I jk 08/1 3/08 02:44 I jk 08/1 3/08 02:44 I jtr Acetone ,y' Benzene I Carbon tetrachloride , / chtoroform V Chloromethane Methyl ethyl ketone Methytene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene_d4 Sur: Dibromofluoromethane Surr: p-Bromofl uorobenzene Surr: Toluenedg Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L %REC %REC %REC %REC 20 1.0 1.0 1.0 1.0 20 10 1.0 1.0 1.0 80-120 70-1 30 80-1 20 80-1 20 MCL - Maximum .ont.rlnrni i"r"r. ND - Not detected at the reporting limit. S - Spike recovery outside of advisory limits. t ENEBGY LASORATORIES, lNC. ' 2393 Salt Creek HlqQway (82601) . P.O. 1ox 32Sd . Caspe4 Wy A2602To// Free 888.235.05ts , s17.zss.2sts . Fax s07.2s4.t639 . A;i;;de;;rryEi;.'com , www.enersylab.com t I I Client: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 3rd Quarter Groundwater c08080344-013 Trip Blank Report Date: 09/18/08 Collection Date: 08/07/08 07:30 DateReceived: 08/08/08 Matrix: Aqueous Analyses Result Units Qualillers RL MCU QCL Method Analysis Date / Byt I I I I t t I I I I I I I I VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: Toluene-d8 ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/LNO ug/LND ug/L 105 %REC 91.0 %REC102 %REC 94.0 %REe 20 't.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-130 80-120 80-120 sw8260B SW826OB sw8260B sw8260B SW8260B SW8260B sw8260B SW8260B SW8260B SW8260B SW826OB SWE260B sw8260B SW8260B 0A1Z0E 15:35 / jlr 08t1210815:35 / jtr 0E112108 15:35 / jlr 08t12108 15:35 / jlr 0811210815:35 / jlr 0811A08 15:35 / jlr 08t12108 15:35 / jlr 08/1 2108 1 5:35 / jlr 0A12nA 15:35 / jlr 0A12|OE 15:35 / jlr OA1?/0E 15:35 / jtr 08/1 2/08 1 5:35 / jtr 08112108 15:35 / jlr 08112tA815:35 / jlr lu?ort nr- -nnaiyte rep-ffi,'rlt. _- - Definitions: ocL - ouatity control limit. MCL - Maximum contaminant level. ND - Not detecled at the reporting limit.MDC - Minimum detectable concentration I ENERGY LABoRAroBEs, tNC. . 239s satt creek Hlg^lway (sz60t) , p.o. Box 3zsr , caspet wy 82602Toll Free 888.zss.0its , s0z.2a5.0its . Fax s0z.2?4.tobs .'ciswcienergyEb.iom . wwwehergytab.coi- I I QA/QC Summary Report Client: Denison Mines (USA) Corp Project 3rd Quarter Groundwater Report Date: 09/1 8/08 Work Order: C08080344 RL %REC Low Limit High Limit RPD RPDLimit Quat 102 98 97 99 101 I I I I I t Method: A2320 B Sample lD: MBLK Alkalinity, Total as CaC03 Carbonate as CO3 Bicadonate as HCO3 Sample lD: LcS Alkalinity, Total as CaC03 Sample lD: C08080344-00SBMS Alkalinity, Total as CaCO3 Sample lD: C080803,I4-00SBMSD Alkalinity, Total as CaCO3 Sample lD: C08080344-0iOBMS Alkalinity, Total as CaC03 Sample lD: c08080344-01oBMSD Alkalinity, Total as CaC03 Method Blank ND mg/L ND mg/L ND mg/L Laboratory Control Sample 200 mg/L Sample Matrix Spike 450 mg/L Sample Matrix Spike Duplicate 450 mg/L Sample Matrix Spike 290 mg/L Sample Matrix Spike Duplicate 290 mg/L Run: MANTECH_0808088 Run: MANTECH_080S088 90 110 Run: MANTECH_080808B 80 120 Run: MANTECH_0808088 80 12A 0.2 Run: MANTECH_0808088 80 120 Run: MANTECH_0808088 80 120 a.7 o.2 1 1 1.0 1.0 'L0 1.0 1.0 Batch: R105615 08/08/08 18:34 08/08/08 18:41 08108108 21:12 08/08/08 21:18 't0 08108t08 22i17 0EIQB|QB 22:25 10 99 101 100 10 10 I I I I I I I Method: A25ll()C SamplelD: MBLK1_080811 Solids, Total Dissotved TDS @ 1SO C Sample lD: LCS1_080811 Solids, Total Dissotvect TDS @ 1SO C Sample lD: C0E080339-0O3AMS Solids, Total Dissolved TDS @ 1BO C Sample lD: C08080339{O3AMSD Solids, Total Dissotved TDS @ 180 C Method Blank ND mg/L Laboratory Control Sample 99s mg/L Sample Matrix Spike 2170 mg/L Sample Makix Spike Duplicate 2140 mg/L Batch: 08081 1 Run: BAL-1_080812A Run: BAL-"1_0808124 90 110 Run: BAL-1_080812A 90 110 Run: BAL-l_0808124 90 .1 10 1.3 -1.SLDS-TDS.W 08111108 08:27 08i 1 1/08 0E:28 08/1 1/08 08:28 08/1 1/08 08:28 10 I I T Qualifiers: RL - Analyte repofiing limit.ND - Not detected at the reporting limit. ENEnGY LABOfrATOBIES, lNC. ' 2393 Salt Creek Hlqlway (5260/) . PO. Box 3258 . Casper, Wya2602To// Free 888.235.0515 ' 307.235.0515 ' Fax 307.234. toii . 'caipiideiiriyEii.'com . www.energytab.com Summary Report Clien[ Denison Mines (USA) Corp Projech 3rd Quarter Groundwater Report Date: 09/18/08 Work Order: C08080344 Units RL %REC Low Limit High Limit RPD RPDLimit Quat I I I I I I I t I I I I Methodr A2540 C SamplelD: MBLK1_08081i Solids, Total Dissotved TOS @ 180 C Sample lD: LCS1_080811 Solids, Toral Dissotved TDS @ t80 C Sample lD: C0E080344-003BMS Solids, Total Dissolved TDS @ t80 C SamplelD: C080803444038MSD Solids, Total Dissolved TDS @ 1SO C Sample lD: C08080346{01AMS Solids, Total Dissolved TDS @ l80 C Samplo lD: C08080346-O0IAMSD Solids, Total Dissotved TDS @ 1BO C Method Blank ND mg/L Laboratory Control Sample 1000 mg/L Sample Matrix Spike 5550 mg/L Sample Matrix Spike Duplicate 5530 mg/L Sample Matrix Spike 5850 mg/L Sample Matrix Spike Duplicate 5840 mg/L Run: BAL-1_08081i8 Run: BAL-1_080811B 100 90 110 Run: BAL-'|-0808118 90 110 Run: BAL.1_080E11B 90 110 Run: BAL-1_080811B 90 ,110 Run: BAL-1_080811B 90 110 Batch: 08081 1 2*SLDS-TDS-W 0.2 08/1 1/08 14:08 08/1 '1i08 14:08 08111108 14:23 0U11ll1 14:23 10 08/1 1/08 1 5:4 1 08111108 1541 10 10 0.2 97 97 97 96 't0 Method: A4500-Cl B Sample lD: MBLKg-0B0B|1A Chloride SamplelO: LCS35-O8OB1lA Chloride Sample lD: C08080344-0O4BMS Chloride Sample lD: C08080344-0O4BMSD Chloride SamplelD: C080803,14-009BMS Chloride SamplelD: C080803,|4{09BMSD Chloride Method Blank ND mg/L Laboratory Control Sample 3620 mg/L Sample Makix Spike 220 mg/L Sample Matrix Spike Duplicate 220 mg/L Sample Mahix Spike 298 mg/L Sample Matrix Spike Duplicate 298 mg/L Run: TITRAT|ON_08081 1A Run: TITMT|ON_O80811A 90 110 Run: TITMT|ON_08O811A 90 110 Run: TITRATION_OBOB1 1A 90 110 Run: TITMTION_08O811A 90 1.t0 Run: TITMT|ON_OBO81tA 90 110 Eatch: 08081 1 A-CL-TTR-W 08/11/08 08:16 08/1 1/08 09:21 08111108 09:44 08/1 1/08 09:45 10 08/11/08 10:03 08/11i08 10:05 10 102 102 102 100 0.4 1.0 1.0 1.0 1.0 t I I I t I T I Qualifiers: RL - Analyte reporting limit.ND - Not detected at the reporting limit. ENEaGY ulBoRAroREs, tNC. . z39J salt creek Hlqlway (s2601) . po. Box J2i8 . casper; wy a2602To// Free 888.235.0515 ' s07.235.0515 ' Fax 307.234. to"ss : Aipiideiirsylai;.'cbm , www.energytab.com Report Date: 09/1 8/08 Work Orden C08080344 ummary Report Client: Project: Denison Mines (USA) Corp 3rd Quarter Groundwater i anatvte Result units RL %REC Low Llmit High Llmit RpD RpDLtmit Quat i I I t t T I t I I I I Method: A4500-F C Sample lD: MBLK-I Fluoride Sample lD: LCS-I Fluoride Sample lD: C08080344-001BMS Fluoride Sample lO: C080803,04{01BMSD Fluoride Sample lD: C080803,t4.0108MS Fluoride Sample lD: C080803{4.0iOBMSD Fluoride Method Blank ND mg/L Laboratory Conkol Sample 1.00 mg/L Sample Matrix Spike 1.54 mg/L Sample Matrix Spike Duplicate 1.54 mg/L Sample Matrix Spike '1.79 mg/L Sample Matrix Spike Duplicate 1.82 mg/L Run: MANTECH_08081 1A Run: MANTECH_08081 1A 90 110 Run; MANTECH_080811A 80 120 Run: MANTECH-O8O8.I 1A 80 120 Run: MANTECH_0SO81 1A 80 120 Run: MANTECH_08081 1A 80 120 0.05 0.10 0.10 0.10 0.10 0.10 100 100 Batch: R105711 08/1 1/08 '13:35 08/11/08 13:38 0E111108 14:32 08/11/06 14:35 10 08111108 15:12 08/11/08 15:15 10 100 94 97 1.7 Method: Sample lD: pH 44500-H B tGvl_080808_2 lnitial Calibration Verification Standard6.80 s.u. Analytical Run: ORtON555A-0BOBO8B 08/08/08 14:46 0.010 99 102 Method: Sample lOl pH Sample lD: pH 44500-H B C080803,14-O01BDUP c0808034441 1 BDUP Sample Duplicate 7.84 s. u. Sample Duplicate 6.63 s.u. 0.010 0.0 t0 Batch: 080808_2_PH-W_SSSA-1 Run: OR|ON555A_080808B 08/08/08 15:33 0.1 10 Run: OR|ON555A_0B0B0AB OE/08/08 16:051.5 .10I I I T I t t I Qualifiers: RL - Analyte reporting limit.ND - Not detected at the reporting limit ENERCY LAEORATORIES, lNC. ' 2393 Satt Creek Hlqlway (5260/) . PO. *ox 3258 . Caspet Wy g2602 To// Free 888.235.051s . 302.2J5.051s , Fax g1z.z74. t63g . 'ciipe;drrrrgyEb."o, , www.energytab.com Client Denison Mines (USA) Corp Project 3rd Quarter Groundwater Report Date: 09/18/08 Work Order: C08080344 I I I t I I I t I I I I rAnalyte Method: Sample lO: Sulfate Sample lD: Sulfate Sample lO: Sulfate Sample lD: Sulfate Sample lD: Sulfate Sample lD: Sulfate 44500-504 E LCS-I_080814 MBLK-i_080814 c08080344{03BMS c0E080344.0038MSD c08080344-012BMS c08080344-01 28MSO Rosult Units Laboratory Control Sample 4990 mg/L Method Blank ND mg/L Sample Matrix Spike 4350 mg/L Sample Matrix Spike Duplicate 4250 mg/L Sample Matrix Spike 4540 mg/L Sample Matrix Spike Duplicate 4490 mg/L 59 0.6 %REC Low Limit High Limit RPD RPDLimit Quat I Batch r 08081 4_1_SO4-TURB-W Run: TURB-2_080E14A 104 90 1 10 Run: TURB-2_080814A Run: TURB-2_080814A 90 110 Run: TURB-2_080814A 90 110 Run: TURB-2_080814A 90 110 Run: TURB-2_0808144 90 110 1.1 08114108 14:54 08114108 14:56 08/14108 16:03 08/14108 16:03 10 08/14108 16:28 08/14/08 16:28 ,0 108 103 2.259 59 108 59 105 I t I I I I I I Qualifiers; RL - Analyte reporting limit.ND - Not detected at the reporting limit I ENERGY LABoRATaBIES, lNc- ' 2393 Salt Creek Hlglway (s2d0t) . po. Box JZia . Caspec Wy s2602ro// Free 888,235.0s15 . roz.zos.0its . Fax az7.isi. i63s' .-";ri;;dr;;;srf,;r; . wwwenersytab.com I I Client Denison Mines (USA) Corp Project 3rd Quarter Groundwater Repoft Date: 09/18/08 Work Order: C08080344 Summary Report I I I I I t I I I t I I I Result Unlts Method BlankSample lD: MB-080916A Calcium lron Magnesium Potassium Sodium Sample lD: LFB-080916A Calcium lron Magnesium Potassium Sodium Sample lD: C08080277-O01KMS2 Calcium lron Magnesium Potassium Sodium Sample lD: C08080277{0tKMSD2 Calcium lron Magnesium Potassium Sodium Sample lDr C08OBO344-01 1 EMS2 Calcium lron Magnesium Potassium Sodium Sample lD: C080803,{4-011EMSD2 Calcium lron Magnesium Potassium Sodium 1.0 106 700.030 105 701.0 103 701,0 93 703.9 101 70 ND ND ND NO ND mg/L mg/L mg/L mg/L mg/L 0.1 0.005 0.04 0.02 0.8 0.50 1020.030 .103 0.50 1010.50 9.1o.77 .100 1.0 1020.030 1041.0 1021.0 891.5 .t 00 1.0 101 0.030 10s1.0 1011.0 891.5 102 1.0 1020.030 991.0 1051.0 933.9 100 Run: lCP2-C_0809i6,4 '130 '130 130 130 130 Run: |CP2-C_080916A 85 ,t25 85 125 85 125 85 125 85 .t25 Run: lCP2-C_080915A 70 130 70 130 70 130 70 130 70 130 Run; lCP2-C_0809't6A 70 130 70 13070 130 70 130 70 130 Run: |CP2-C_0809164 70 ,30 70 130 70 130 70 130 70 130 Run: |CP2-C_0809164 Batch: Rl076,40 09/16/08 14:06 09/16/06 14:10 09/16/08 15:02 09/16/08 15:06 20 20 20 20 20 09/16/08 16:48 09/'16/08 16:52 20 20 20 20 20 Laboratory Fortified Blank 51.1 mg/L 1.03 mg/L 50.5 mg/L 45.3 mg/L 49.8 mg/L Sample Matrix Spike 283 mg/L 2.07 mg/L 154 mg/L 106 mg/L 175 mg/L Sample Matrix Spike Duplicate281 mg/L 2.1'l mg/L 153 mg/L 105 mg/L 177 mg/L Sample Matrix Spike 805 mg/L 14.2 mg/L 508 mg/L 248 rng/L 492 rng/L Sample Matrix Spike Duplicate 814 mg/L14.5 mg/L 504 mg/L 248 mg/L494 mg/L 0.5 1.8 0.7 0.8 1.2 1.1 2 0.8 0.2 0.3 RL %REC Low Limit High Limit I t T Qualifiers: RL - Analyte reporting timit.ND - Not detected at the reporting limit. I ENERGY LABoRAroBEs, lNc. . zggg salt creek Hlqlway (s2601) , po. Box o2ir , caspec wy s2602ToltFree888.235.05/s ' 307.235.0515 ' Fax 307.2s4./6bs :'tAiiiidriiigy6;ir.www:enersytab.com I I QA/QC Summary Report Client: Denison Mines (USA) Corp Project 3rd Quarter Groundwater Report Date: 09/18/08 Work Order: C08080344 Result Units RL %REC Low Limit High Limit RPD RPOLimit QualI I I I I I I I I I I t I E200.8 Sample lDr LRB Arsenic Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Mercury Molybdenum Nickel Selenium Thallium Tin Uranium Vanadium Zinc Sample lD: LFB Arsenic Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Mercury Molybdenum Nickel Selenium Thallium Tin Uranium Vanadium Zinc Sample lD: C08080344{0iEMS4 Arsenic Beryllium Cadmium Chromium Cobalt 115 115 115 85 115 85 115 85 115 85 11585 115 85 115 85 115 85 115 85 115 85 I .t5 85 1ls 85 115 85 11585 l1s Run: ICPMS2-C_080813A 70 130 70 130 7A 13070 13070 130 Method Blank 0.0006 ND ND ND 4E-05 ND ND ND ND ND ND 0.0007 ND ND ND ND ND mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L Laboratory Fo(ified Blank 0.0505 mg/L 0.0483 mg/L 0.0510 mg/L 0.0503 mg/L 0.0501 mg/L 0.0509 mg/L 0.0510 mg/L 0.0501 mg/L 0.0051 1 mg/L 0.0519 mg/L 0.0511 mg/L 0.0495 mg/L 0.0510 mg/L 0.0510 ms/L 0.0512 mg/L 0.0503 mg/L 0.0508 mg/L Sarnple Mafix Spike 0.254 mg/L 0.255 mg/L 0.243 mg/L 0.243 mS/L 0.245 mg/L 6E-05 3E-05 1E-05 4E-05 2E-05 7E-05 3E-05 5E-05 8E-05 5E-05 0.0007 0.0002 1E-05 6E-0s 1E-05 3E-05 0.0003 0.0010 .t 00 0.0010 970.0010 102 0.0010 1010.0010 100 0.0010 102 0.0010 1020,0010 100 0.0010 102 0.0010 1040.0010 ,to2 0.0010 97 0.0010 1020.0010 102 0.00030 102 0.0010 101 0.0010 102 0.0010 1010.010 1020.010 970.050 970.010 98 Run: ICPMS2-C_080813A Run: ICPMS2€_OBO8134 85 85 85 Batch: R105869 08113108 12:47 08113108 12sa 08/1 3/08 23:43 I I I Qualifiers: RL - Analyte reporting limit.ND - Not detected at the reporting limit. I ENERGY LABOflATOBfiES, lNC. ' 2393 Salt Creek Hlg_Qway (5260t). P.O. Box 32i8 . Casper; WYA2602To// Free 888.235.0515 ' 307.235.05/5 ' Fax 307.234. t639 . -cisper4ienergytab.con . wwwehergytab.ioi I I QA/QC Summary Report Client Denison Mines (USA) Corp Project 3rd Quarter Groundwater Report Date: 09/18/08 Work Order: C08080344 llnat6e Units RL %REC Low Limit High Limit IRPD RPDLimit Qual I II I I t I t I t I I t I t I t t Batch: Rl05869 08/13/08 23:43Sample lD: C08080344-001EMS4 Copper Lead Manganese Mercury Molybdenum Nick6l Selenium Thallium Tin Uranium Vanadium Zinc SamplelD: C08080344-{,01EMS04 Arsenic Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Mercury Molybdenum Nickel Selenium Thallium Tin Uranium Vanadium Zinc Sample lD: C08080344-01 iEMS4 Arsenic Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Meacury Molybdenum Qualifiers: RL - Analyte reporting limit. ND - Not detected at the reporting limit. A - The analyte level was greater than four times the spike level. lnaccordance with the method % recovery is not calculaied. Sample Matrix Spike 0.251 mg/L 0.247 mg/L 0.31 1 mg/L 0.0254 mg/L 0.261 mg/L 0.245 mg/L 0.245 mg/L 0.248 mg/L 0.252 mg/L 0.259 mg/L 0.251 mg/L 0.242 mg/L Sample Mahix Spike Duplicate 0.255 mg/L 0.272 mg/L 0.247 mg/L 0.246 mg/L 0.250 mg/L 0.246 mg/L 0.246 mg/L 0.316 mg/L 0.0255 mg/L 0.260 mg/L 0.240 mg/L 0.247 mg/L 0.246 mg/L 0.253 mg/L 0.259 mg/L 0.255 mg/L 0.236 mg/L Sample Makix Spike 0.247 mg/L 0.228 mg/L 0.238 mg/L 0.232 mg/L 0.280 mg/L 0.241 mdl 0.241 mg/L 5.35 mg/L 0.0238 mg/L 0.259 mg/L 0.010 1000.050 990.010 96 0.0010 100 0.10 103 0.050 980.0012 990.10 990.10 100 0.00030 103 0.10 1000.010 96 0.0010 1020.010 1090.010 990.050 98 0.010 100 0.010 980.050 98 0.010 98 0.0010 1000.10 1030.050 960.0012 980.10 990.10 101 0.00030 104 0.10 1020.010 94 0.0010 980.010 9l 0.010 940.050 92 0.010 92 0,010 93 0.050 96 0.010 0.0010 95 0.10 99 08/13/08 23:50 20 20 20 20 20 20 20 20 20 20 20 20 20 ?0 20 20 20 08/14/08 03:13 Run: ICPM52{_0808134 70 13070 13070 13070 13070 130 70 13070 13070 130 70 13070 13070 130 70 130 Run: ICPMS2-C*080813A 70 13070 13070 13070 13070 13070 13070 130 70 13070 13070 13070 13070 130 70 13070 130 70 13070 13070 130 Run: ICPMS2C_080813A70 .t 3070 130 7A 130 70 130 70 13070 13070 13070 13070 13070 130 0.3 o.b 1.5 1.3 2 2.2 0.6 1.6 0.3 0.4 2.1 0.7 0.7 0.8 0.2 1.8 2.3 t I I ENEBGY LABORATORIES, tNC. . 2393 satt creek Hiqlway (s2601). po. Box 32sB . caspu wya2602Tolt Free 888.235.0515 . 307.235.0515 . Fax 307.234. rc1e . ',ciipiiAien"rgyta-b.io, , w*i.ifrirglao.ioi- port Client Denison Mines (USA) Corp Project 3rd Quarter Groundwater Report Date: 09/18/08 Work Order: C08080344 RL %REC Low Limit High Limit 93 97 97 97 99 95 87 t I t t I I I I I t t I T Sample lD: C0808034{-01iEMS4 Nickel Selenium Thallium Tin Uranium Vanadium Zinc Sample lD: C08080344-O11EMSD4 Arsenic Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Mercury Molybdenum Nickel Selenium Thallium Tin Uranium Vanadium Anc Sample Matrix Spike 0.299 mg/L 0.244 mgiL 0.243 mg/L 0.242 mg/L 0.251 mS/L 0.239 mg/L 0.360 mg/L Sample Matrix Spike Duplicate 0.247 mg/L 0.217 mg/L 0.238 mg/L 0.242 mg/L 0.287 mg/L 0.241 mg/L 0.248 mg/L 5.58 mg/L 0.0248 mg/L 0.261 mg/L 0.305 mg/L 0,240 mg/L 0.248 mg/L 0.245 mg/L 0.255 mg/L 0.250 mg/L 0.365 mg/L 0.050 0.0012 0.10 0.10 0.00030 0.10 0.010 0.0010 980.010 870.010 940,050 960.010 950.010 940.050 99 0.010 0.0010 990.10 1000.050 960.0012 96 0.10 990.10 98 0.00030 1010.10 1000.010 89 Run: ICPMS2-C_OSOB13A 70 13070 13070 13070 13070 13070 13070 130 Run: ICPMS24_080813A 70 .t 3070 13070 130 70 13070 13070 13070 13070 13070 13070 13070 13070 1s070 13070 13070 13070 13070 130 Batch; R105869 08/14108 03:'13 08/14/08 03:20 20 20 20 20 20 20 20 20A 20 20 20 20 20 20 20 20 20 0. 1 4.8 0.1 4.1 2.5 0.2 2.8 4.1 3.9 1 1.9 1.4 2 1.3 1.7 4.3 1.4 I T t RL - Analyte reporting limit. ND - Not detected at the reporting timit. A - The analyte level was greater than four times the spike level. lnaccordance with the method % recovery is not calcutaiJ I ENEBGY LABoBAroHEs, tNC. ' 2J9J salt creek Hlqlway (s2601) . po. Box J2id . casper; wy 82602rott Free 88d.21i.05ti ' s07.zss.0st5 . Fax eoz.fiq. r63i'.-r;;i;;6r;;irhi;";, . www.enersytab.com I I QA/QC Summary Report Client Denison Mines (USA) Corp Project 3rd Quarier Groundwater Report Date: 09/18/08 Work Order: C08080344 i Analyte Methorl: E200.8 Result Units Method Blank ND mg/L ND mgiL 0.0002 mg/L Laboratory Fortified Btank 1.34 mg/L 0.0502 mg/L 0.0210 mg/L Sample Matrix Spike 1.90 mg/L 0.216 mg/L 0.0112 mg/L Sample Makix Spike Dupticate 1.92 mg/L 0.218 mg/L 0.01 15 mg/L Sample Matrix Spike 1.25 mg/L 0.0769 mg/L 0.00960 mg/L Sample Mahix Spike Duplicate'1.30 mg/L 0.0799 mgiL 0.00702 mg/L RL %REC Low Limit High Limit RPD RPDLimit Qual LRB I I t I I I I t T I I I T I I t Sample lD: lron Manganese Silver Sample lD: lron Manganese Silver Sample lD: lron Manganese Silver Sample lD: lron Manganese Silver 107 85 100 85 104 85 Batch: R105957 08114108 12:57 08/14108 13:03 08i 15/08 01;02 s 08/15/08 01:08 20 2020s 08115108 02.44 s 08/15/08 03:16 20 20 20s LFB 0.0002 6E-06 7E-06 0.0010 0.0010 0.0010 115 115 115 Run: ICPMS4C_0808148 Run: ICPMS4-C_0808148 c08080344.009EMS4 Sample lD: C08080408-001CMS4 lron Manganese Silver Sample lD: C08080408{OICMSD4 lron Manganese Silver 0.030 1000.010 920.010 56 0.030 102 0.010 980.010 57 0.030 990.010 1060.010 48 0.030 1030.010 1120.010 35 Run: ICPMS4€_0808148 70 130 70 .t 30 70 130 Run: ICPMS4-C_0808148 70 130 70 130 70 130 Run: lCPMS44_0808148 70 130 70 130 70 130 Run: ICPMS4€_0808148 70 13070 130 70 130 1.2 1.2 ,a 3.9 3.8 0 Qualifiers: RL - Analyte reporting limit. S - Spike recovery outside of advisory limits. ND - Not detected at the reporting limat. I I I ENEflGT LABORATOryFE lltlC. ' 2393 Salt Creek Highway (82601) . PO. Box JZS7 . Caspet Wy 82602To//Free 888.235.0515 ' 307.235.0515 ' Fax 307.234. to3s ,'cisperaienergytab.con . www.eheigylab.ioi- Client Denison Mines (USA) Corp Project: 3rd Quarter Groundwater Report Date: 09/1 8/08 Work Order: C08080344 Result Units RL %REC Low Limit High Limit RpD RpDLimit euatI I I I I I I t t I I I T E200.8 Sample lD: LRB Cadmium Lead Manganese Mercury Selenium Uranium Sample lD: LFB Cadmium Lead Manganese Merqiry Selenium Uranium SamplelD: C08080344-007EMS4 Cadmium Lead Manganese Mercury Selenium Uranium Sample lD: C08080344.007EMSO4 Cadmium Lead Manganese Mercury Selenium Uranium Method Blank 3E-06 ND ND ND ND ND 3E-06 3E-06 6E-06 1E-05 0.0001 2E-06 0.0010 104 0.0010 1020.0010 99 0.0010 1 05 0.0010 108 0.00030 107 0.010 910.050 103 0.0100.0010 94 0.00't 0 97 0.00030 116 0.010 910.050 104 0.010 0.0010 95 0.00 t 0 99 0.00030 118 mg/L mg/L mg/L mg/L mg/L mg/L Laboratory Fortified Blank 0.0s20 mg/L 0.051 1 mg/L 0.0497 mg/L 0.00525 mg/L 0.0540 mdL 0.0535 mg/L Sample Matrix Spike 0.0484 mg/L 0.0519 mSiL 1.55 mg/L 0.00472 mg/L 0.0517 mg/L 0.0613 mg/L Sample Matrix Spike Dupticate 0.0485 mg/L 0.0521 mg/L 1.57 mg/L 0.00473 mg/L 0.0528 mg/L 0.0622 mg/L Run: ICPMS4€_080818A 85 115 85 115 85 115 85 115 85 lls 85 1ls Run: ICPMS4-C_080818A 70 .t 30 70 130 70 130 70 130 70 130 70 130 Run: ICPMS4-C_0S0818A 70 130 70 130 70 130 70 130 70 130 70 130 Run: ICPMS4€_080818A Batch: R1061 17 08/18/08 20:39 08/18/08 20:46 08/19/08 04:01 08/19/08 04:08 20 20 20A 20 20 20 0.2 0.3 1.3 0.2 2 ',.5 t I I RL - Analyte reporting limit. ND - Not detected at the reporting limit. A - The analle level was greater than four times the spike level. lna@ordance with the method % recovery is not calculaied. I ENERGY LABORATORIEi tNc. - zggg satt creek Highway (a260/) , po. Box J2s8 . caspe4 wyaz602To// Free 888-235.0515 ' 307.235.05/5 ' Fax 307.234. to1s .'cisperdenergytab.con , www.eheriytab.cii- T I QA/QC Summary Report Client: Project: Denison Mines (USA) Corp 3rd Quarter Groundwater Report Date: 09/18/08 Work Order: C08080344 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual I 3.1 98 68 73 I I I I I Method: Sample lD: Silver E200.8 LRB Sample lD: LFB Silver Sample lD: C08070730.00iMMS4 Silver Sample lD: C08070730-001MMSD4 Silver Sample lD: C08080340-007EMS4 Silver Sample lD: C08080344-007EMSO4 Silver Method Blank 0.0001 mg/L 7E-06 Laboratory Fortified Blank 0.0197 mg/L 0.OOt0 Sample Matrix Spike 0.0135 nE/L 0.010 Sample Matrix Spike Dupticate 0.0139 mg/L 0.010 Sample Matrix Spike 0.0145 mg/L O.O1O Sample Matrix Spike Duplicate 0.0140 mg/L 0.010 Run: |CPMS44_0808208 Run: ICPMS44_0808208 85 115 Run: |CPMS44-0808208 70 130 Run: ICPM54€_0808208 70 130 Run: |CPMS44_0808208 70 130 Run: ICPMS4-C_0808208 70 130 Batch: R106332 08/20/08 15:02 08/20108 15:09 08120108 17:01 S 08120t0E 17:07 20 08/20/08 18:19 08/20/08 18:2s 203.5t I I I t I I T Method: 8200.8 Sample lD: LRB Beryllium lron Manganese Sample lD; LFB Beryllium lron Manganese Sample lD: C08080344-{,OlEmS4 Beryllium lron Manganese Sample lD: C080803,04-0Ol EMSD4 Beryllium lron Manganese Method Blank ND mg/L ND mg/L ND mg/L 4E-06 0.0002 6E-06 Run: ICPMS4{_080825A Run: ICPMS4-C_080825A 85 't 15 85 115 85 115 Run: ICPMS4€_080825A 7A 130 70 130 70 130 Run: ICPMS4€_080825A 70 130 70 130 70 130 Batch: R106481 08/25108 13:26 08125108 17:18 08125108 21:02 08/25/08 21:09 20 20 20 Laboratory Fortified Blank 0.0509 mg/L O.O01o 1 .28 mg/L 0.0010 0.0502 mg/L O.OOI O Sample Matrix Spike 0.215 mg/L 0.0106.18 mg/L 0.0300.298 mg/L O.O.|O Sample Matrix Spike Duplicate 0.213 mg/L 6,22 mg/L 0.295 mg/L 0.010 0.030 0.010 102 102 '100 86 97 93 85 98 92 0.8 0.6 0.9 I I I RL - Analyte reporting limit. S - Spike recovery outside of advisory limits. ND - Not detected at the reporting limit. ENERGY LABORATORES, lNC. ' 2393 Satt Creek Hlqlway (52601) . P.O. 1ox 3Zi8 . Casper, Wy A2602To// Free 888.235.0515 ' s07.235.0515 ' Fax 307.294. tobs . 'cispiideneriyEi.'com . www.energytab.com Client Denlson Mines (USA) Corp Projec[ 3rd Quarter Groundwater Report Date: 09/18/08 Work Order: C08080344 I T I I I t I I I I I I I Method: E200.8 Sample lD: LRB Beryllium Sample lD: LFB Beryllium Sample lD: C08080438{!09DMS4 Beryllium Sample lD: C08080438-009DMSD4 Beryllium Result Units Method Blank ND mg/L RL %REC Low Limit High Limit RPD RPDLImit QuaI 3E-0s Run: lCPMS24_080826A Run: ICPMS2{_080826A 85 115 Run: ICPMS2{_080826A 7A 130 Run: |CPMS24_080826A 70 130 Batch: R106563 08126108 12:51 08/26/08 12:58 08126108 14:5a 08/26/08 15:01 20 Labo.atory Fortified Blank 0.0514 mg/L 0.0010 Sample Makix Spike 0.0450 mg/L O.Oio Sample Matrix Spike Duplicate 0.0458 mg/L O.OIO 103 1.7 90 92 Method: E350.1 Sample lD: MBLK Nitrogen, Ammonia as N Sample lD: LFB Nitrogen, Ammonia as N Sample lD: 808080755-00iGMS Nitrogen, Ammonia as N Sample lD: B080807SS.O0iGMSD Nitrogen, Ammonia as N Sample ]D: 808080791-O01BMS Nitrogen, Ammonia as N Sample lD: 808080791-001BMSD Nitrogen, Ammonia as N Method Blank NO mg/L Laboratory Fortified Blank 1.02 mg/L Sample Matrix Spike 1.11 mg/L Sample Matrix Spike Duplicate 1.11 mg/L Sample Matrix Spike 1.03 mg/L Sample Matrix Spike Duplicate 1.000 mg/L Run: SUB-81 1 5579 Run: SUB-B115579 90 110 Run: SUB-B115579 90 110 Run: SUB-Bl 1 5579 90 110 Run: SUB-B115579 90 110 Run: SUB-81 15579 90 110 Batch: B_R1 I 5579 08/1 1/08 09:41 08/1'll08 09:42 08/11/08 10:18 08/11/08 10:19 10 08/1 1/08 1'l:00 0U11/08 11:01 10 0.02 0.10 0.10 0.10 0.10 0.10 105 102 0.2 103 96 96 2.6 T I t I I I Qualifiers: RL - Analyte reporting limit.ND - Not detected at the reporting llmit. ENEAGY LABORATORIES, lNC. ' 2393 Salt Creek Hrghway (52601) . PO. Box O2S8 . Casper; Wy g2602To/1Free888.235.0515 ' 307.235.0515 ' Fax 307.234.t0bs ;'dipiideniriylai;)com. www.energytab.com C Summary Report Client Denison Mines (USA) Corp Project 3rd Quarter Groundwater Report Date: 09/18/08 Work Order: C08080344 0.7 98 99 101 101 I t I I I I I I I I I I Analyte Method: E353.2 Sample lD: MBLK Nitrogen, Nikate+Nitrite as N Sample lD: LFB Nitrogen, Nitrate+Nitrite as N SamplelDr C0E080340-0038 Nikogen, Nitrate+Nitrite as N Sample lD: C08080340-0038 Nitrogen, Nitrate+Nitrite as N SamplelD: C08080340{068 Nitrogen, Nitrate+Nikite as N Sample lD: C08080340-0068 Nitrogen, Nitrate+Nitrite as N Method Blank 0.005 mg/L Laboratory Fortified Blank 0.968 mg/L Sample Matrix Spike 0-970 mg/L Sample Matrix Spike Duplicate 0.977 mg/L Sample Matrix Spike 0.992 mg/L Sample Matrix Spike Duplicate 0.992 mg/L Run: SUB-Bl 1 5766 Run: SUB-8115766 98 90 110 Run: SUB-Bl 1 5766 90 110 Run: SUB-BI 1 5766 90 110 Run: SUB-8115766 90 110 Run: SUB-B115766 90 110 Batch: B_Rl15766 08/13/08 'l 1:55 08/1 3/08 1 1:56 08113108 1218 08/13/08 12:20 10 08/13/08 13:46 08113108 13:47 10 RL %REC Low Limlt High Ltmit RPD RPDLimit Quat 0.002 0.050 0.050 0.050 0.050 0.050 Method: E900.I Sample lD: MB-GAOI56 Gross Alpha minus Rn & U Sample lD: LCS€A{I56 Gross Alpha minus Rn & U Sample lD: C08080344-O()IAMS Gross Alpha minus Rn & U Sample lD: C080803,r4-O01AMSD Gross Alpha minus Rn & U Method Blank 1 pCi/L Laboratory Conkol Sample 29.9pCi/L Sample Matrix Spike 26,4pCvL Sample Matrix Spike Duplicate 28.1pCi/L Run: G5000W_080829A Run: G5000W_080829A 70 130 Run: G5000W_080829A 70 130 Run: G5000W_080829A 70 130 6.4 109 96 103 Batch: GA-0156 09/03/08 09:32 09/03/08 09:32 09/03/08 09:32 09/03/08 09:32 21.8 I t I t I I I RL - Analyte reporting timit.ND - Not detected at the repoding timit. T ENERGY LABORATORIES, lNC. ' 2393 Salt Creek HlgQway (52601) . PO. 1ox J258 , Casper Wy A2602To// Free 888.235.0515 ' 307.235.0515 ' Fax 307.234.t03s .'dipiicienergyla-i.ion . www.ihergylao.ioi- I t Clienh Denison Mines (USA) Corp Project 3rd Quarter Groundwater Report Date: 09/18/08 Work Order: C08080344 Amlyte Result Units RL %REC Low Limit High Limit IRPD RPDLimit Qual :I t I t I I I t I I T I T I I I Method:sw8260B Sample lD: 12.Aug-08_LGS_3 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane rn+p-Xylenes Methyl elhyl ketone Mehylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: Toluene-dB Sample lD: 12-Aug-08_MBLK_6 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane 6+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthatene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofl uoromethane Surr: p-Bromofl uorobenzene Surr: TolueneiS Samplo lO: C08080344-OOICMS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Laboratory Control Sample 89 ug/L 12 ug/L 11 ug/L 11 ug/L 9.8 ug/L 19 udL 92 ug/L 10 ug/L 8.3 ug/L 11 ug/L 12 uS/L 30 ug/L Method Blank ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L Sample Matrix Spike2000 ug/L 240 ug/L 240 ug/L 240 ug/L 220 ug/L 380 ug/L 2100 ug/L Run: GCMS2_080812A70 13070 13070 13070 13070 13070 130 70 13070 130 70 13070 13070 13070 13080 12070 13080 13080 120 Run: GCMS2_0808124 Batch: Rl05819 08112108 12:'14 08112108 14:10 08l12lOB 20:45 89 1.0 119 1.0 114 1.0 112 1.0 98 1.0 96 20 92 1.0 102 1.0 E3 1.0 106 1.0 116 1.0 99 1 .0 100 1.0 100 1.0 99 1.0 102 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 106 96 104 96 98 ,0 121 10 119 10 121 10 109 10 96 20 104 80 12070 13080 12080 120 Run: GCMS2_08Ogt2A70 .t 3070 13070 13070 13070 13070 13070 130 ND - Not detected at the reporting limit. RL - Analyte reporting limit. I ENERGY LABoRAroBEs, lNC. . zJ93 satt Creek HlqQway (az60t) . po. Box 32s8 , casper; wy a2602Totl Free 888.235.0515 ' 307.235.0515 ' Fax 307.234. t63i ;'ci$iiai,eneriyr",ii.iom , www.eiier:gytab.cii- I I Clien[ Denison Mines (USA) Corp Project: 3rd Quarter Groundwater Report Date: 09/18/08 Work Order: C08080344 Summary Report Analyte Method: SW8260B Sample lO: C08080344-001CMS Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromolluorobenzene Surr: ToluenedB Sample lD: C080803,r4{01CMSD Acetone Benzene Carbon tetrachloride Chloroform Chloromethane 6+p.Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofl uorobenzene Surr: Toluene-d8 Result Units Sample Matrix Spike230 ug/L 180 ug/L220 ug/L 240 ug/L600 ug/L Run: GCMS2_080812A 70 13070 13070 13070 13070 130 80 't20 70 130 80 12080 12A Run: GCMS2_080E12A70 130 70 13070 13070 13070 13070 13070 13070 13070 130 70 13070 13070 13080 12070 130 80 12080 120 RL %REC Lo!,y Llmlt Hlgh Limit RPD RPDLimit QuatI I I I I I I I t I I I T Sample Makix Spike Duplicate 2000 uS/L 270 ug/L 260 ug/L 260 ug/L 240 ug/L 430 ug/L 2100 ug/L 240 ug/L 210 ug/L 240 ug/L 260 ug/L 670 ug/L 10 114 10 68 10 109 10 119 10 100 1.0 100 1.0 105 1.0 99 1.0 103 99 'r 0 135 10 128 10 128 10 120 10 109 20 105 10 120 10 t05 10 118 10 132 10 112 1.0 100 1.0 101 1.0 101 1.0 101 11 7.8 5.'l 9.1 12 0.8 5.1 18 8.5 '10 11 0 0 0 0 Batch: R105819 08112108 20:45 08l12tQB 21:24 20 20 20 20 z0 20 20 20 20 20 20 10 10 10 10 I t t RL - Analyte reporting timit. S - Spike recovery outside of advisory limits. ND - Not detected at the reporting limit. "{o _I Ioq)o0- (,rpaor(D)P)xD:.Etor.9,8,E',ErI tgrOoi:rg ;& \oiiE)arOrOrCL,s lc,o.E G Eo ).sEo:l Eo([olpl>tolLIo-l-tr-l21tIo. IuJlo1<tulIJIo. I Efro(, o tr, +,oo =crot I (Uo,.I.fa I _>.G'c olF'j -l(El (>:tr-[o; {JLoi -0dtoirFco! FOI-^alEGH-c<O+- HH ui/eI) c) P.J b 5 5c tl Lr'<o-"E;-P; 6t- E6 nflH.s -IHiffi ? Fiili$iss' o LI.9 orAE clE= T FE:E5 3ET-EoE€ EHlplE Ec)ZFIIE \ o (tV, punot8uJnl HSnU ), \u-1aryE \GiE \,'o\()l aclri ipf- ,--0 fr5 afd2,3o jaqto ^esseorg Xuottep6anspltos/stto5rcteffirF E9 g 71 g 1y1y:edl1 eldureg t D -tr€5 t) .. .f3c3CE )<)ItD<)<saE.rov&rL v E,3 /) o Ett I o o-E#D9>orE o9ij,J =oTE opY <oi JEr 6JE€ <Ir 6-t:otro-= &;- o60) (J'6S< OF J,"8 2 co';o(Jeo.=o'o EHiE6t=o ldilo ilEll+ ilf,r,lc.El[ 6EIs E bls. od"lgrs I O-11, E olb3 E .l.s ? B llEE6 [83$ -1*E* -loL o,. I o >r: ll#$ E'lg-t;{s=- b ,IEE E ll o'3 bIISHEll :,!'- 1l{i Eil o :.=il E30 lga H ;ls$r IEE E tg*g lgs H IiFE l5;Elo9 o lie rE};592,r-o9> Eo .=GEI ,\)l o "locn(!o aiEEL- clo*oxo:tr2.JEaz,9cJ!crhofEE -:oi EEho; -=G# -OL-o<at,5F'FL(E(EEo>Etr5o= {JLafr =3lodlrrolo! Ics Ir-t I ^EH Iod'I I lr I I I I I I I T HH t .il 1 -<.J C3.c .5 I -lf'wc 5'ro nl.trrf ts E5ELrrdrt qb o!t-<fD-EoztE*) zoo.b HE ocI.9 o,AE C<.:J- qc E*I h.EuE (JA- 6i€e -F<ud€ a>o on>(/, o)t=E or k IE,;'t l5 o (-tVJ punorEurnlHSnU fid'd \o 5 A(4j .9L F 4 2r a Jaqlo,{esseolEi Xuopege6el-sp;log7slo5ratel :ry Eg 9196y:adllalduieg EsJauleluoCJoJaqu/nN = lJ C a* Co .9I rJc tr4c.J3 fc)o r).60o3zrl& e Lo'tro.DE,tr9>3go96Jtr; J-9 YE os9 <(E= Jcg Al olg <lri6 EE il.aJEg oBFs Ees y g EH6g6E=o lddo IEIellE il$ol ccl6.Qlo oEIs EEtoal* od*lF, pl(,: E I: $EI O-lE r! o,lbg EIE>E IrE€lE:3 ili af -IEE* -lo-o.t rJ >: iI#IE'le-t;Ju= ts Ig; Ell6:6 II,3 H E {iiEll t! 3.=IIEOE'lti E l;sEIEN E IEH E | €E$t#slb; p 1fi3 uleP sluo ildro \lli o >l= o viFT 6 ;3.po!! ooE ^EFTE} ;:9.=E(,a5E E 6t E tr Workorder Receipt Checklist l: lr !,It l, lrI I I I I t I I I t I T Energy Laboratories lnc Denison Mines (USA) Corp Login completed by: Edith Mcpike Reviewedby: KeriSchroeder Reviewed Date: 8/11t2008 2:54:00 pM Shipping container/cooler in good condition? Custody seals intact on shipping container/cooler? Custody seals intact on sample botiles? Chain of custody present? Chain of custody agrees with sample labels? Samples in proper container/botile? Sample containers intact? Sufficient sample volume for indicated test? All samples received within holding time? Container/Temp Blank temperature: Water - VOA vials have zero headspace? Water - pH acceptable upon receipt? Yes [J Yes [l Yes ! Yes [l Not Present ! Not Present E Not Present [l Yes [l Yes [J Yes [l Yes [f Yes [l 3"C On lce Yes [J Yes [J 1 ffi rililfl rililililtfl tilililililil iltil tiltilil c08080344 Date and Time Received: 8/8/2008 9:30 AM Received by: ah Carrier name: Next Day Air Non NoE No! Non No! No fI Non Non Non Non Chain of custody signed when relinquished and received? yes [f No ! No VOA viats submitted n No E NotAppticabte tr I ENERGY LABoRAToRtES:^tlvg: '_2J9J satt creek lilg^lway (sz60t) . p.o. Box J2s8 . caspet; wy8z60zro// Free 888'235.osrs ' soz.ies.oin-: ni ibi.iii.)aii :"["pidrid6yhiii", . www.enetsytab.com I I Project: Sample Oelivery Group: C08OBO344 Denison Mines (USA) Corp 3rd Quarter Groundwater Date: 78-Sep-08 CASE NARRATIVE The following C"." Nrrr"ti !fillb?Jryf"s (USA) corp on 8t1t2oo8 og:bo:oo. rnese samprJs *"i"'r"rign"o ELtworkorder'r.luml",I t T I I I I I I t I I I t I t oRtGtNAL SAMPLE SUBMTTTAL(S) All original sample submittals have been returned with the data package. SAMPLE TEMPERATURE COMPLTANCE: 4"C (t2"C)Temperature of samples received may not be consideied properly preserve.d by accepted standards. samples that aref:ll"o"ut"o immediatelv after collection srrati oe "o".ii;;J;":"pt'-"irl if thLre i. iirGn"" tnriihe chirins process has GROSS ALPHA ANALYSIS liliJTff3:3l"J"X';:Hrf,;::,r;;::,:i: ;1Jil:li:ffi;j:Hp water method for row rDS waters Dara provided by RADON IN AIR ANALYSIS The desired exposure time.is.48 hours (2 days). The time delay in returning the canister to the laboratory for processingshould be as short as possible to avoid exceislve oecay. tr,|-aiilurn i"iorr"nded delay between end of exposure tobeginning of counting should not exceed g days.- SOIUSOLID SAMPLES All samples reported on an as received basis unress otherwise indicated. ATRMINE, SIMAZINE AND PCB ANALYSIS USING EPA 505Data for Atrazine and simazine are reported trom Epn sz52-, not from EpA -505. Data reported by ELI using EpA method505 reflects the results for seven individual Arociors. when the results forall seven are ND (not dltected), the samplemeets EPA compliance criteria for pCB monitorin!. SUBCONTRACTING ANALYSIS subcontracting of sample analyses to an outside l1b9rat9r.v may.be reguired. lf so, ENERGy LAB9RAT6RIES will utilize itsi:'ot"r:,f;iX':,1;:r:'-H'fticontract raooiaiories ror tnii seririce. irr'rr.r., raboratories wiri'oeinoicateo wilhin rhe BRANCH LABORATORY LOCATIONS eli-b - Energy Laboratories, lnc. - Billings, MTeli-g - Energy Laboratories, lnc. - Gilletie, Wyeli-h - Energy Laboratories, tnc. _ Uetena, ilfeli-r - _Energy Laboratories, lnc. - Rapid Citv, SDeli-t - Energy Laboratories, tnc. - Coitege diiU*. fx CERTFICATIONS: USEPA: \tt/00002; FL-DOH NELAC: E87641; Catifornia: 0211BCAOregon: WY200001: Utah: 3072350Sf S; Virgi;ia: 6oOSZ; Washinston: C1903 ISO 17025 DISCLAIMER: The resurts of this Anaryticar Report rerate onry to the items submitted for anarysis. ENERGY LABoRAToRIES' lNc - CASPER,wY certifies that certain method selections contained in this report meetrequirements as set forth by the above accreiiiins-autnorities. some i"Jurt-. ruqr".ted by the crient may not be coveredunder these ce(ifications' All analvsis oataio ieiuur_nltr.edf.ol;;;Li"rv ""ror""r";i;lili; u" ."iin"o in the samprestate of origin. prease verify ELIs tertincation ii,irug" by visiting www.energyrab.com 5:f?iJ:1',fr:iHitT:l*Ito provide vou with this analvtical service. For additionat information and services visit our THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT I t I I I AMERICAN WEST Client: Denison Mines Project ID: 3rd euarter GW Lab Sample ID: L85732-0lA Field Sample ID: MW-l Collected: 8lI2/Z0OB 3:25:00 pM Received: 8/1S120OB Contact: Steve Laudau Analyzed: 8lt8/2008 1 l: l g:00 AANALYTICAL LABORATORIES Analysis Requested: g2608/50308 Analytical Results VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll. Dilution Factor: I Compound Reporting Limit Analytical Resultt t 841 l5 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-1 l5 80-t24 88-120 3.2 106 103 106 99.3t T t T I I I I I T t (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer The pH of the sample wqs >2. Anarysis was performed within the 7 day hording time. #fl*:tr9'''#":lixh:tr*"#f,i.*!:ffi-G"?i#,ifJfij",J.?"'Ai.'.Hiii,rl;rT'frJfrl,TTjflt"fJ*f:rx*;#tr*-.t**:#fr!"!,H,;/:,:11f""::T;""'" wrth the rc-publication of this rmon for I I I I Contact: Steve Laudau AMERTCAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 3rd Quarter GW Lab Sample ID: L85732-02A Field Sample ID: MW-3 Collected: 8112/2008 IZ:32:00 pM Received: 8/15/2008 Analysis Requested: 82608/50308 Analytical ResultsI I 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor: I Compound Reporting Limit Analytical Result VOLATILES bv GC/MS 82608 I I Tetrahydrofi.ran Sr.rr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluoro be nzene Surr: Dibromo fluoro methane Surr: Toluene-d8 2.0 81-143 85-1 1s 80-t24 88-120 <2.0 107 100 106 99.2I T I I t T I T I (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.corn Kyle F. Gross Laboratory Director Jose Rocha QA Officer The pH of the sample was >2. Analysis was performed within the 7 day holding time. I t ffi"rffit"tr.;p'ggg$flffi$r*#[ri,rm*ur,r$i*[tiij#*r$rfirT#"fi!r:ffi'tr,x[[#munir,r*u[]in[x#iln$;i]'#frrffirir^Ttr:l:,* I I I I T ,r/ Contact: Steve Laudau Amlyzed: 8/LB/}OOB 12:59:00 pM AMERICAN WEST ANALYTICAL LABORATORIES ORGANIC ANALYSIS REPORT Client: Denison Mines Project ID: 3rd Quarter GW Lab Sample ID: L85732-03A Field Sample ID: MW-3A Collected: 8/12/2008 1l:55:00 AM Received: 8/LS/2OOB Analysis Requested: 82608/50308 Analytical Results VOLATILES bv GC/MS 8260B I 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor: I Compound Reporting Limit Analytical ResultI I 841 l5 Tetrahydrofi.ran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-143 85-l l5 80-124 88- 120 <2.0 108 102 107 100I t t t I I I t I I I (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer All aallss ##lf,.l[{|ii$}H*:#$:Hi"H1'i'ffiH#llffffi':,.J.'*t:x,str*:".1",T:r;'ffilig1j:ffiriTJ:ffi:TJggtr1edcoc:rhisrponisprvidedro*heexc,uivewor,he I T I I I AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 3rd Quarter GW Lab Sample ID: L85732-O4A Field Sample ID: MW-20 Collected: Slll/2008 1l:08:00 AM Received: 8/1512008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Arulyzed: 8l 18/2008 I :25:00 pM VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll. Dilution Factor = I Compound Reporting Limit Ana$ical Resultt I 841 15 Tetrahydrofi.ran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoro methane Surr: Toluene-d8 2.0 8l-143 8s-1 15 80-124 88-120 <2.0 108 101 107 98.7I I t T I I T I T t I (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer The pH of the sample was >2. Anarysis was petformed within the 7 day hording time. lffiF:i:qf.f-!1tfiffil.tr'iffffiiJl}1##{f#ngff$t;$Tiyntfi;,T*:"Ha*t,-*n;:f;Hi:#:,:llpr^otiono.."uieorayproduc,orprocw.orinrmetion I I I I I AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 3rd Quarter GW Lab Sample ID: L85732-05A Field Sample ID: MW-22 Collected: 8/ ll/2009 10:08:00 AM Received: 8/l5lZ00B Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Amlyzed: 8/18/2008 l:50:00 pM VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor: I Compound Reporting Limit Analytical Resultt I Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-l I 5 80-t24 88-120 <2.0 110 101 106 99.sI I I I I T I t t (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 ernail: awal@awal-labs.corn Kyle F. Gross Laboratory Director Jose Rocha QA Officer The pH of the sample was >2. Anarysis was performed within the 7 day hording time. I I T I I I AMERICAN WEST ANALYTICAL LABORATORIES ORGANIC ANALYSIS REPORT Client: Denison Mines Project ID: 3rd Quarter GW Lab Sample ID: L85732-06A Field Sample ID: MW-26 Collected: 8/12/2008 7:56:00 AM Received: 8/1512008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 8lIB1200B 2:15:00 pM VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor: I Compound Reporting Limit Analytical Resultt I Tetrahydrof,ran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluoro be nzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-143 85-t 1s 80-124 88-120 <2.0 109 102 110 99.9I I I I I I I I I I I (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer All malyss 2008 PageT ol xi*:*#ll";f--',"]ffi'lfflT,*If."""i,f;Hf'*:'#*TH,iH,x["J;1T4"#il[l:*Ht"::::y:::-:rfitr:ff1. promcion or sa,c oray product or procs, or in comsrion Report Date: 8120n008 page 7 of I t t t I t I AMERICAN WEST ANALYTICAL LABORATORIES Contact: Steve Laudau Analyzed: 8llBl200B 2:40:00 pM ORGANIC ANALYSIS REPORT Client: Denison Mines Project ID: 3rd Quarter GW Lab Sample ID: L85732-07A Field Sample ID: MW-60 Collected: 8ll3l2009 2:15:00 pM Received: 8/l5l20OB Analysis Requested: 82608/50308 Analytical Results VOLATILES bv GCilrS 82608 I 463 West 3600 South Salt Lake City, UT Units: prgll. Dilution Factor = I Compound Reporting Limit Analytical Resultt I Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8 1-143 85-l t5 80-124 88-120 <2.0 109 r02 107 99.5I I I I t t I I T I I (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.corn Kyle F. Gross Laboratory Director Jose Rocha QA Officer The pH of the sample was >2. Anarysis was petformed within the 7 day hording tinte. /2008 Page 8 of I I t I T I t AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 3rd Quarter GW Lab Sample ID: L85732-08A Field Sample ID: MW-70 Collected: 8l ll/2008 10:08:00 AM Received: 8/15/2008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau AnalTrzed: 8/1812008 3:05:00 pM VOLATILES bv GC/MS 82608 t 463 West 3600 South Salt Lake City, UT Units: pgll- Dilution Factor: I Compound Reporting Limit Analytical ResultI I 841l5 Tetrahydrofi.uan Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluo romethane Surr: Toluene-d8 2.0 8 t- 143 85-l 15 80-124 88-120 <2.0 110 101 107 98.9I t I I I I I t I I I (801) 263-8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.corn Kyle F. Gross Laboratory Director Jose Rocha QA Officer The pH of the sample was >2. Anarysis was performed within the 7 day hording time. fr!ffi*-,Fjffl!!,t',"nffilffi"+ll;,p*,*1.,fl#irf"zu#,,;*X"n:;i,yf. ni"o*orion*ittr,ti;;;#,;;;.p,"."tionoruieormyproducrorprccss,orinconns6llel&oac@rdmgtotherulsofthetradeudof*imce. ''-wr'rEErdtwonlvoncontrt lhrscompavrceptsnorcporibitityexceptforihedu;p;;;;c;;ii["p}"i'#j--aysising@dfaith I t T I I AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 3rd Quarter GW Lab Sample ID: L85732-09A Field Sample ID: MW-S Collected: 8/lll200B 3:03:00 pM Received: 8lI5l200B Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 8/18/2008 3:30:00 pM VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll. Dilution Factor: I Compound Reporting Limit Analytical Resultt I 841 15 Tetrahydrofi.ran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe t:grcne Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l - 143 85-l l5 80-124 88-120 6.6 lll 101 109 99.1I I I t T I I I T I t (801) 263-8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.corn Kyle F. Gross Laboratory Director Jose Rocha QA Officer The pH of the sample was >2. Analysis was performed within the z day hording time. I t T t I Contact: Steve LaudauClient: Denison Mines Project ID: 3rd Quarter GW Lab Sample ID: L85732-l0A Field Sample ID: MW-12 Collected: 8/1112008 4:40:00 pM Received: 811512008 Analysis Requested: 82608/50308 Analytical Results / AMERICAN WEST ANALYTICAL LABORATORIES Analyzed: 811812008 3:55:00 pM VOLATILES bv GC/MS 82608 t 463 West 3600 South Salt Lake City, UT Units: pgll. Dilution Factor = I Compound Reporting Limit Analytical ResultI I Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-B romo fluo robe nzette Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-143 85-l 15 80-124 88-120 <2.0 110 102 108 99.0I I t I I I t I T (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.corn Kyle F. Gross Laboratory Director Jose Rocha QA Officer T o oUr(E o_ C\caf-r.)oohl frq).t oo ,A\J{orSL.};o#l> U.o {) {)Fl Uo ztrla o q, U ,< 6B V) &Fio&o M&o B rt)E6l F] dc,) ct oq) F cg(J tr() Ex I I I I I I I I I I I I t I t t I T T I I I I I I T t f 57sz-- DENrsorud MINES CHAIN OF CUSTODY salt Lake ci0, Ut s+TjF--- Chain of Custody/Sampling Analysis Request 2_.G Samples Shipped to:l------I Sheetl of1 I__l I I t I I I I I I I Palmer, Tanner f urr: I 6ruEozE C)odo" '(,dn)H IE lFl6loLol6lF1 IalorEo Fqqc,o do"l EIol el a Fl B E szE o o q() loihol(E lol(!t*o o 0 q)q(l)il: d,bo CS o(!ariq) o o {zE ozE -)ol>ttrl troo>fiu o =aIOs>,B \ztr z -tol>t o ri { J\ -l-{l il {l.-.l :l 't,o tsq tr cioH) J n t1 6s A 4)(A .oG'.l I I I T T t I T I I .6iae 6-6-c I I t I I Contact: Steve Laudau AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 3rd euarter GW-Resample & Sept. Monthly Lab Sample ID: L86148-0tA Field Sample ID: MW-tl Collected: 913/2008 Received: 9l5lZ00B Analysis Requested: 82608/50308 Analytical Results / VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll. Dilution Factor: I Compound Reporting Limit Analytical Result t t Tetrahydrofiran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe t:zerre Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-l l5 80-r24 88-120 <2.0 93.3 101 97.0 103I I I I I I I I I I T (801) 263-8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer The pH of the sample was >2. ;ffi*-,il11,..r*li'ff"ru1ffi+ffffit*ilTf,#tr##TH;,;il;fli,rrj n i" "o*o,i"i'*"i,i,r,;;;"1;#:;i. o,"."timorsa,eof my prduc, orprmm, orincomgsdqa t t I t I AMERICAN WEST ANALYTICAL LABORATORIES ORGANIC ANALYSIS REPORT Client: Denison Mines Project ID: 3rd Quarter GW-Resample & Sept. Monthly Lab Sample ID: L86148-02A Field Sample ID: MW-14 Collected: 913/2008 Received: 9/5/2008 Analysis Requested: 82608/5030B Analytical Results Contact: Steve Laudau Analyzed: 9/ll/2008 9:16:00 AM VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor = 1 Compound Reporting Limit Analytical Result T I 841 1s Tetrahydrofliran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe nzene Surr: Dibromo fluo romethane Surr: Toluene-d8 2.0 8l-143 85-l 15 80-124 88-120 <2.0 95.4 101 96.8 103 I T I I I I I I I t T (801) 263_8686 Toll Free (888) 263-S686 Fax (801)263-8687 email: awal@awal-labs.corn Kyle F. Gross Laboratory Director The pH of the sample was >2. Jose Rocha QA Officer Allaalys Report Date: 91t2,2008 page 3 of 15All.malys applicable to rhe CWA. SDWA. md RCRA ae pafomed in accord"dd*;. p";ii;;;;,J:tL,i,,i."",,,,"nmeof thic cnm^,._ ". ""., -*rT:j:.|l.}cproteoh. pertinqt ;HflHttr"#*;*J*',",fl#i,r#t*B,"li::$i#ffilii"r,:u:lrTj:ffii"f;i,fff:*x*:."Jtr1T,ffi;lT:trjxi;tJ"#hli:lT:j::1,:xx]:*;ad e@rdhg to rhe rule of tt. t ua" -a 6r'rii'J"..rccepts no rwponsibility except for the due perfomae oiinspectioo uiralo, ^ufy.i, in gooJf"itt I I I I t AMEzuCAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 3rd Quarter GW-Resample & Sept. Monthly Lab Sample ID: L86148-03,4. Field Sample ID: MW-23 Collected: 91312008 Received: 9/512008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 9llll2009 9:36:00 AM/ YQTATILES bv GC/MS 82608 t 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor: I Compound Reporting Limit Analytical ResultI t Tetrahydrofiran Surr: 1,2-Dichloroethane-d4 S urr: 4-Bromo fl uorobe nzene Surr: Dibromo fluoro methane Surr: Toluene-d8 2.0 81-143 85-l 15 80-124 88-120 <2.0 97.6 t0l 99.1 103I t I I I I I I I I I (801) 263_8686 Toll Free (888) 263-9686 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director The pH of the sample was >2. Jose Rocha QA Officer All mlys applicable ro the CWA. SDraddrBs. Priviles or",r^-,,*,,-.,Y*lTll9ll,Tq*r"*ed in rccordacero NELACprctocols. pertinqt Report Date: 9llZl2008 page4 of 15 wilh rhe re-publicilion of this imn for rI ur unr rsIDtr ror my purIDFild rccordog to the rule of the trade md of *imce_xJ.}::mix:rfg,"jti*tr#*rid*$'tl;;"#ffi1':"HS#H,,"t#lL"iJ,y::'i;:'#.:ffiiJtX,!:"l$,"J;t.Xl*",,tr*Ur'*nmH:n[X#,##'fflii$*h" I t I I I AMERICAN WEST ANALYTICAL LABORATORIES ORGANIC ANALYSIS REPORT Client: Denison Mines Project ID: 3rd Quarter GW-Resample & Sept. Montlrly Lab Sample ID: L86148-044 Field Sample ID: MW-24 Collected: 914/2008 Received: 915/2009 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analy'zed: 9lltl2009 9:56:00 AM VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor = I Compound Reporting Limit Analytical Result t I 841 15 Tetrahydrofi.ran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-143 85-1 l5 80-124 88-120 <2.0 100 t02 99.6 102 I I I I I t t I t I I (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director The pH of the sample was >2. Jose Rocha QA Officer All malys applicable to rhe CWA. SD\addrme. privileu* nr.,*_,,-. ,."- ^yl:md RCM rc pafomed in accordmce to NEI_AC protGols. psninflt Report Date: 9112/2008 page5 of 15 ifiT'x;Tfiif'#.::;t*rftf"":I;fTtTJs;"##i#J*T+;,;*"if,":H[t]$"ifi'u:lt:j,l#if,l;:,ff:%x*:#t1;t';tt"Hs:ll]i#:f*,]:":xlr:i?T:"".::i; I I I I I AMERICAN WEST ANALYTICAL LABORATORIES ORGANIC ANALYSIS REPORT Client: Denison Mines Project ID: 3rd Quarter GW-Resample & Sept. Monthly Lab Sample ID: L86148-05,4. Field Sample ID: MW-25 Collected: 9/212008 Received: 91512008 Analysis Requested: 82608/5030B Analytical Results Contact: Steve Laudau VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll. Dilution Factor: I Compound Reporting Limit Ana$ical Result I I Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobelzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-l l5 80-t24 88-120 <2.0 98.9 t02 99.7 101 I I I I t I I I I I T (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer All malys€s The pH of the sample was >2. Report Date: 911212008 Page6 of 15 with the Bpublication of this r€port for ey ::11,".""t.11, lll $, 11.yotismm, promotion "_, *i. "a"it p,;;;i. iilffi o, in "o*otion I I t t I AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 3rd Quarter GW-Resample & Sept. Monthly Lab Sample ID: L86148-06A Field Sample ID: MW-27 Collected: 91312008 Received: 915/2008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 9l I I 12008 10:37:00 A VOLATII,ES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll- Dilution Factor: I Compound Reporting Limit Analytical Result t I T Tetrahydroflran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe nzene Surr: Dibro mo fluo romethane Surr: Toluene-d8 2.0 81-143 8s-l 15 80-124 88-120 <2.0 103 101 103 101 I I t I I I T T I I (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director The pH of the sample was >2. Jose Rocha QA Officer ##Iii,',l[*';Jl,'&:Hi3#ft;T"1,.::iilil"H,?#f#fmi",J*'H:.,isf1.;,:Tl?:tl"T:ty,rTti:iirls.,3e3tedenqe attacn"o.o. *,,.*fX,3fJ1.,n3'.;:f,"::T;JPageTofl5 ffiT;,Iji.,m:xiru:,xxffiruii,f:,;,ir,,lrir""*#;"il:#[T:##*,!I,#*'Hi:iliiFl."r#,fi:f;tJ.H;f1",1"',T,,#;;txi;$",[fi:tT:":*::ri"T;1H" I t I I I Client: Denison Mines Project ID: 3rd Quarter GW-Resample & SeOl!. Lab Sample ID: L86I48-07A / Field Sample ID: MW-28 , / Collected: gl3l2}O8 V Received: 91512008 Analysis Requested: 82608/50308 Analytical Results VOLATILES bv cC/tUS 82608 Contact: Steve Laudau 'Monthly AMERICAN WEST ANALYTICAL LABORATORIES I 463 West 3600 South Salt Lake City, UT Units: pgll. Dilution Factor: I Compound Reporting Limit Analytical Result I I Tetrahydrofi.ran Surr: 1,2-Dichloro ethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibro mo fluoromethane Surr: Toluene-d8 2.0 81-143 85-l 15 80-124 88-120 <2.0 105 101 102 101 I I t I I t t t t I I (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director The pH of the sample was >2. Jose Rocha QA Officer Report Date: 9/12/2008 page 8 of 15All oalyss ,"0 .o" *, *[H::,Iffi ;i ;:'"1fl I"" ::T,:Jaddrsee. Privilege of subsequmr ue of thc n*. or rr,is "Jmpii;;;;;;L ",,,( c,rrr ^..-^r..^.:^-nmeorthiscompmvorilvmmbsorirssr31i,"i1.n.Jj".,r,,:,i"1'rii'ffiffiffi::ilT;1il''f,:Hi,1li#ff1;","'#r.li:ffXiilJ'rliof"fll'ff;*::'ntn[X""" urpose.oths thm for $e addrw will be gmrea onty on contrct. rili".olrp-"y u"""po no rapomibility excepr for rhe due psfomece of insrecrioo md,or marvsis ;n rm.r r,md according to the ruls of the'trade ud ofsciqce. I I I t t L vr\\J-1^\[L. -1i\- I \ C[enr: Denison Mines 1fdt Project ID: 3rd euarter GW-Resample & Sept._ Lab Sample ID: L86148-08A / AMERICAN Field Sample ID: MW-29 /Collected: 91212008 t /WEST Received: g/sl2oog y Monthly Contact: Steve Laudau Analyzed: 9llll2008l l:19:00 AANALYTICAL LABORATORIES Analysis Requested: 92608/50308 Analytical Results yOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake Ciry, UT Units: pgll, Dilution Factor: I Compound Reporting Limit Analytical Result I I Tetrahydrofi.ran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-l l5 80-t24 88-120 <2.0 r06 101 102 101 I t T I I I I T I T T (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.corn Kyle F. Gross Laboratory Director The pH of the sample was >2. Jose Rocha QA Officer Report Dare: 9/12/2009 pagegof 15All malyss ;1FffilX*fiIffi."iJl';'#,,rilTugfj[::]5"jJtri""T::,,""i:llli".iitiiiqiil"I;1,fl:f,:*ii*!"flfi1flfrTi;lT:trti;f#'#.i:lffJ*::i;ffi[H"md according to rhe rule of rhe'trade mi t t I I I AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Lab Sample ID: L86148-09.4, Field Sample ID: MW-30 Collected: 9/212008 Received: 915/2005 Analysis Requested: 82608/5030B Analytical Results Contact: Steve Laudau Analyzed: 9/1112008 1 t:39:00 A VOLATILES bv GC/MS 82608 T I 463 West 3600 South Salt Lake City, UT 841 l5 Units = pg/L Dilution Factor: I Compound Reporting Limit Analytical Result I Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobelzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8 r-143 85-1 l5 80-124 88-120 <2.0 104 101 102 99.9t T I T t I T t t T I (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.corn Kyle F. Gross Laboratory Director The pH of the sample was >2. Jose Rocha QA Officer All malys applicable ro the CWA- sDtA, md RCRAre pcfomed in accordace to NELAC prot@ols. perrinmtaddrwe.Privilegeofsubsequotwofrh"n*"ortrririJ.o-;;;;;L^.,,".ror^----^r.--.i-,.-,.Report Date: 9112/2002 page l0 ofl5 yr.,po,";tt,;;;i;i##ffi".ii;,id#lT,lfi",tfi'#,:lixlJtrHffiffJ;T;}*iffiTg1;l;J:::13if::llii*:*]Tli:,:1'19j;;;";;od ac@rding to rhe ruu of ,n"i.a" -tr 6i"Ii!""".rccepts no rcpomibility qcept for the due ptrfomma oiinspetion airalo. maysis in gma faitfr I t I I I AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 3rd Quarter GW-Resample & Sep[. Monthly Lab Sample ID: L86148-l0A Field Sample ID: MW-31 Collected: 912/2008 Received: 9/512008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 9/II12008I I:59:00 A VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll. Dilution Factor: I Compound Reporting Limit Analytical Result I I 841 15 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe nzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l - 143 85-l 15 80-124 88-120 <2.0 106 101 103 99.7I I I T I I I I I I I (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.corn Kyle F. Gross Laboratory Director Jose Rocha QA Officer The pH of the sample was >2. with the re-publicarion of this imn for r I I I I I Client: Denison Mines Project ID: 3rd Quarter GW-Resample & Contact: Steve Laudau Amlyzed: 9/ ll 12008 12: I 9:00 pM Sept. Monthly AMERICAN WEST ANALYTICAL LABORATORIES Lab Sample ID: L86148-l lA Field Sample ID: MW-32 Collected: 9/2/2008 Received: 91512008 Amlysis Requested: 82608/50308 Analytical Results VOLATILES bv GC/MS 82608 I Units: pgll, 463 West 3600 South Dilution Factor: I Salt Lake City, UT Compound Reporting Limit Analytical Result I I Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe nzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-r43 85-1 ls 80-124 88-120 <2.0 108 99.9 102 99.9 I I I I I I I T T I T (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer The pH of the sample was >2. *.o. ** .1fl",'j,"#t;ji #.'"1li,,"1ffi"1,1Jwith the cpublicarionof rhis iepon for ay purpore orhq thaano accordtng to the ruls ofthe uade md ofscimce. Report Date: 9112/2008 page 12 of 15 nmeorthiscompavormvmmbeoritsstaffrc";;;;;;;';#i'";#'""!i#i"il;'Jt,ilffiL1,1,,11i#3il$"'.T;1,'ii;fX*lJ}iff"i:l.l:i[y:'Ji.ffiti1i"" urpos.othq tha for the addrwe will be grmted only ou contrc,. rii;;;;;;y *".pts no reponsibility o."pt io.'tir" a* poro*ace of inspecrion md/or marysis in god faith I I I I I Client: Denison Mines Project ID: 3rd Quarter GW-Resample & Sept. Lab Sample ID: L86148-l2A Field Sample ID: MW-65 Collected: 9/2/2008 Received: 9/512008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 9l ll/2008 12:39:00 pM Monthly AMERICAN WEST ANALYTICAL LABORATORIES VOLATILES bv GC/MS 8260B I 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor: I Compound Reporting Limit Analytical Result I I 841 l5 Tetrahydrofluan Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l - 143 85-l 1s 80-124 88-120 <2.0 107 101 104 98.9t I t t I I I T t I I (801) 263-8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director The pH of the sample was >2. Jose Rocha QA Officer All oalyss applicable to rhe CWA- SD,addrcw. privits,* o.-,r"_.,_, .."_ ^ytl1d_19y.*p*t"med in accordoce to NELAC prot@ols. perthot ReportDate: 9/1212008 page 13 of 15 wirh the re-publicaion of this imn for r I I T I I ORGANIC ANALYSIS REPORT AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 3rd Quarter GW-Resample & Sept. Monthly Lab Sample ID: L86148-13.A. Field Sample ID: MW-26 / Monthty Collected: 91312008 Received: 91512008 Analysis Requested: 82608i50308 Analytical Results / Contact: Steve Laudau Analyzed: 9l I I /2008 I :00:00 pM VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor: I Compound Reporting Limit Analytical Result I I Tetrahydrofi.ran Surr: 1,2-Dichloro ethane-d4 Surr: 4-Bromofluorobenzene S urr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-143 85-1 l5 80-124 88-120 <2.0 108 100 105 101 I T I I I I I I I T T (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer The pH of the sample was >2. #frtrfi"-Hiirf;:!""1**s*:i[r*,aTJ*tf#ir"#,**,,t d*jit:#f il".-*,i""'*-i,r'ii"-IJ'iliiffii]',"*"rionorsaieormyprcducrorprcc*.orincomsrion t I I I I AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 3rd Quarter GW-Resample & Sept. Monthly Lab Sample ID: L86148-14A Field Sample ID: MW-60 Collected: 91412008 Received: 915/2008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Amlyzed: 9/ I I 12008 I :20:00 pM yOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor = I Compound Reporting Limit Analytical Result I I 841 ls Tetrahydrofuran Surr: 1,2 -Dichloroethane-d4 Surr: 4-Bromo fluorobe rvene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-143 85-1 15 80-124 88-120 <2.0 107 99.6 104 100 t I t I I I I I I I t (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer Allelys Report Date: 9/12/2008 page 15 of15addrse, Privilegs of subguor ue owith the epublication of this report for ily ilill],1l*1fr e_.,{.:atismm. promotion o, sai" ora,iy proJwit. pio"orlo. io "o*odon o oO!G0. ooos oo oFracoJ oIc.la oF.qp() tsoIo|@ @ooeq 6 €ood 6 oI > t \f ,J osE tj.(Jo oFrqDI =6Ic.t@ @aoe h -b Eaz IoJ > 6v Ia,.1 @ooNo 6 ooo.T (_)o ptsq)(J*6€N€ I B N 9€-I il 'ioo IrqDL) +oIc^la 6ooNq q v I3 oODEr!Qo A9rU)D()*6Ic{€ €ooNa a .1 > o 6sf I5 oq)€ oo oF-v)DUj oIat€ @aaN6 6 oTu 6Ia+€€J o3p'i Uo oFv1Do ?o€al€ QaNq 6 €ooNao €o€t Ia-l aE oo @aodq 6 s = ro€rf I@FI zIrq o*oIrl€ @aoNq 6 olp lq(J ot-U)D(J* oaNa €o€{-€@J ood6 6 N z oqr+ I o0g oo s '=oo EoF.qp() *oICI€ ooo '=tr.o oFI() f-LId€ oo6lo a zot-qDo*o€c.l@ ood6 s o€$ I ".1 o€ €5 No€$ I€J ol) oa o oU oF ,.1 a aoad6 d o€v I J o Ao A o Iqo& c) A o e o oq, oU HHo v) 0 o o = U) oo\tr \o6_f - 'IJ (n\is)30 EauU),i' E i!*B E oU O 95 O9Fl 3r) o oa 9g a)a)€o (s o ts(, ko =k;oEeL..l m >),< (n & FrIa&o M& u) 6l l-1 cl() c\l +.ao),. Ect(.) Lc) A= ec)EE.*EiLoUa.(J I t T I T I I I I I I I I I t I t I I I I I t I I I t I I I I I I I I I T T 6G /crr DENISO"DMM MINES CHAIN OF CUSTODY Amqrican West Analytical Labffi - y.7 Samples Shipped to:ffi Salt Lake City, Ut 84115 b"Liz 3rd Quarter GW- Resample & Sept. )^r^r. Sy else is a re-sample for 3rd quarter ground water Chain of Custody/Sampling Analysis Request f"-V (r oo,Jto, .qE 6rooo5B(!oo fi, E oo. E(,g) o c:oEo 6 q 6 -\ \ \Y\ A c)(no(U "-1 t I I I I t I I I I rNOr+rr)(ON E r I r r I r E(ld/?{.-JI, \\r-)Fra\g,r t ,/1\_lLft II \\ ll\// "-ar-_--F t tt// --l . .{r* Il tl \\ \\\ N A T 38 \\\// // --:::://\=__r, 0 3000 SCALE IN FEET )N.22 45450 EJ(PLANATIoN perchod mdtibrktg we[ sttowhg 5460 elevatbn h fool atndgnporary perched flEnitodng well O ssss etroiing &6vaton kr bet amJPtEz-1 perched piszoflEts shoutinga s592 clcvrtion in 6ot amst MW-31 perched monitoring r",, ,nst"1166 April, f ssno slrryirq ebvation in feet amsl NOTES: Locations and elevations for TW4-23, TW4-24, and TW4-25 are approximate ^ temporary perdted monitoilng well hstslled {> 5573 Apd, 2005 ehowirq clevation in bct amd \r, -_ .- tGmpo(ary percfied rnonitoririg well instalhd,r( 554u M.y, 2007 thowing apfoximab elsvation \ \\ I ill q l1 l1 l1 -=ll ll 1l 1l 1l 1l 1l ii sz 1l 1l gl 1l 1l 1l 1l 1l 1l *-&f" ""-" \:-: -:-:=': #*u"') KRIGED 3rd QUARTER, 2008 WATER LEVELS WHITE MESA SITE HYDRO GEO CHEM,INC. ITIIIIIIIIIf I I I I I I I I I I I I I I I I I I I WELL eMW-1 _MW_2 -MW-3 - MW-3A -ilIW-4 e MW-11 -.[IW-12- MW-14 - [Yl\17-15 \,-MW-17 * MW-19* MW-19 -MW-20*MW-22 *MW-23 *MW_24 -MW-25 -A/W_26\- MW-27 .-- MW-28r MW-29 - MW-30/ MW-31 -MW_32 PtEz-',| PtEZ-2 PIEZ-3 PtEZ-4 PtEZ-s Quarterly Depth Summary 3rd Quarter 2008 DATE DEPTH 8t1212008 - 812612008 8112t2008 - 811212008 - 8/18/2008 - 8l't112008 * 8/5i2008- 8t11t2008- 8/6i2008 " 8t12t2008 ^ 811212008' 8/13/2008 " 8t13t2008- 811112008' 8111t2008 - 8/5/2008* 8/6/2008 - 814t2008 - 8t1212008 - 8/6/2008 - 8/6/2008 " 8/5/2008- 8t4t2008* 8t4t2008- 8/5/2008 - 71812008 * 71812008 * 7t8t2008 * 71812008 * 71812008 * 66.93 -MW-4109.63 -*TW4-183.37 TW4-2 85.38 TW4-372.53 TW4-4 106.70 TW4-5 91.43 TW4-6 108.50 TW4-7 104.23 TW4-8106.57 TW4-977.79 TW4-1071.90 TW4-1155.77 TW4-1280.42 TW4-1367.43 TW4-14 114.20 TW4-15 114.99 TW4-1676.83 TW4-1784.51 TW4-1851.98 TW4-1978.43 TW4-20 103.14 TW4-2178.15 TW4-2270.46 TW4-2377.00 TW4-24 TW4-25 63.69 15.01 31.72 52.34 47.31 WELL DATE DEPTH 8t26t2008 71.97 8t2612008 61.75 8t26t2008 69.43 8t2612008 47.68 8t26t2008 64.25 8t26t2008 54.25 812612008 72.88 8t2612008 68.73 8t2612008 68.90 8t26t2008 52.36 812612008 54.77 8t26t2008 61.55 8t26t2008 36.88 812612008 49.53 812612008 89.76 812612008 79.63 8126t2008 64.70 8t26t2008 76.82 8t26t2008 54.98 8t2612008 89.98 812612008 89.89 8t26t2008 59.43 8t26t2008 56.00 8t26t2008 67.69 8126t2008 56.49 812612008 50.74 Page I of I Steve Landau I I t I I I I I I I I I I T I I I t T From: Steve Landau Sent: Friday, November 28,2008 2:09 PM To:'Dane Finerfrock' Subject: 3rd Quarter CSV Data Attachments: C08080344.csv; C08080664.csv Dear Mr. Finerfrock, Attached to this email is an electronic copy of quarterly and quarterly accellerated laboratory results for groundwater monitoring conducted under the Groundwater Discharge Permit for the White Mesa Mill during the 3d Quarter, 2008, in Comma Separated Value (CSV) format. Monthly CSV data for the July and September samplings are being transmitted under separate cover. Yours truly, Steven D. Landau 11,128/2008