Loading...
HomeMy WebLinkAboutDRC-2008-002303 - 0901a0688081b674White Mesa Uranium Mill Groundwater Monitoring Report State of Utah Groundwater Discharge Permit No. UGW370004 2'd Quarter (April through June) 2008 Prepared by: Denison Mines (USA) Corp. Suite 950, 1050 lTth Street Denver CO 80265 August ,2008 1. INTRODUCTION This is the Routine Groundwater Monitoring Report, as required under Part I.F.l of State of Utah Groundwater Discharge Permit No. 370004 (the "iermit") for the 2nd quarter of 2008 (the "Quarter") for Denison Mines (USA) Corp's. ("DUSA's") White Mesa Uranium Mill (the "Mill"). As required under Parts I.E.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 (April through June). a) Groundwater Compliance Monitoring (i) Quarterly Groundwater Compliance Monitoring Quarterly Groundwater Compliance Monitoring is performed in the wells listed below, pursuant to Part I.E.l . a) of the Permit. MW-lt MW-14 MW-26 (formerly TW4- I 5) MW-32 (formerly TW4- I 7) (ii) Semi-annual Groundwater Compliance Monitoring Semi-annual Compliance Monitoring is performed in the wells listed below, pursuant to Part I.E.I. a) of the Permit. MW-l MW-2 MW-3 MW-5 MW-12 MW-15 MW-17 MW-l8 MW-19 (iii) 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 t I t I I I T I I I t T t t T I t I I select constituents at wells: MW-l, MW-3, MW-s, MW-I2, MW-I5, MW-l7, MW-I8 and MW-I9. (iv) 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: MW-3A MW-20 MW-22 MW-23 MW-24 MW-25 MW-27 MW-28 wM-29 MW-30 MW-31 The sample collection dates for monthly samples occurred on April 29 and}v.4.ay 14,2008. Routine quarterly, semi-annual and accelerated quarterly sample collection occurred during the period of May 12 through June 18, 2008. (v) ParametersAnalyzed All routine groundwater monitoring samples were analyzed for the parameters listed in Table 2 and Part I.E.l .c) z)ii of the Permit. 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: (D The quarterly groundwater compliance monitoring wells listed in paragraph 2.1.a) above were measured during the period of May 27 tfuough June 18, 2008 depending on location. (ii) Piezometers - P-1, P-2,P-3, P-4 and P-5, on May 29,2008; (iii) Existing monitoring well MW-4 on May 27,2008 and all of the temporary chloroform investigation wells, on June 24-25,2008; (iv) In addition to the above, depth to water measurements are routinely observed ,,) I I I I t t I I I I I I I I I I T I I in conjunction with sampling events for all wells sampled during monthly, quarterly and semi-annual monitoring efforts, regardless of the sampling pu{pose. Field Data Sheets o Attached under Tab B are copies of all field data sheets where field data were recorded in association with the quarterly and semi-annual sampling effort on May 27 through June 18, 2008 for the groundwater compliance monitoring wells listed in paragraph 2.1(a) above.o 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 April for monitoring wells; MW-14, MW-26 and MW-32. o 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 May for monitoring wells; MW-14, MW-26 and MW-32. 2.3 Laboratory Results -- Routine Groundwater Monitoring 2.3.I 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. o Samples collected for the April accelerated sampling were reported on June 6, 2008 (Tab E) Also included under this Tab are the results of a duplicate sample of MW-32 (MW-65, 4-29-08). 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 (MW-60, 4-29-08) with monthly samplings. o Samples collected for the May accelerated sampling were reported on June 8, 2008 (Tab F). Also included under this tab are the results of analyses for a duplicate sample of MW-32 (MW-65, 5-14-03). 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 (MW-60, 5-13-08) with monthly samplings. . Samples collected May 27 through June 18, 2008 for the 2'd Quarter and Accelerated Quarterly samples under the Permit were reported in four data sets dated luly 7, 2008, Ju,ly 77, 2008 (two sets) and Jiuly 27, 2008. (Tab G). Also included under this tab are the results of analyses for duplicate samples of MW- t I I I I I I I I I I I I I I I t t I 32, MW-17 and MW 5. (MW-65, 70 and 75, respectively). A field blank (MW- 60, 5-28-08) was collected for the quarterly sampling episode. Note: Copies of laboratory QA/QC Summaries are included with the reported data in 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,Intera Inc, 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 ([ntera, 4ll9l07) and Background Groundwater quality Report, New Wells, For the Denison Mines (USA) Corp. Wite Mesa Uranium Mill Site, San Juan County, Utah (Intera,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. White 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 analyical 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 and Semi-Annual Sampling Monitoling Well (Water Class) Constituent GWCL(uo/Ll SampleResult (uS&) MW-3 (Class III) Manganese 400 810 Uranium 15 3 1.3 Selenium 25 73.4 I I T t I T I I I I T t T T I I I t I A separate Notice of these exceedances has been submitted to the Executive Secretary on August 6,2008, pursuant to Part I.G.1.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 August 6, 2008 MW-s (Class II) Manganese 200 2s8 MW-12 (Class III) Uranium t5 16.7 MW-14 (Class III) Uranium l5 61.3 Manganese 400 2,290 MW-15 (Class III) Selenium 25 106 Uranium l5 43.9 MW-17 (Class III) Uranium l5 29.4 MW-18 (Class II) Uranium 7.5 44.8 Thallium 0.5 t.34 MW-19 (Class II) Flouride 1.0 1.1 MW-26 (Class III) Mansanese 400 1.130 Uranium I5 2r.7 Chloroform 35 2.000 Dichlormethane 2.5 110 MW-32 (Class III) Manganese 400 5.400 Nickel 50 62 lron 5.500 8.6s0 MonitoringWell (Water Class)Constituent Normal Frequency of Semnlino Accelerated Fr9-quencylof Snmnlino.,'. , Commencement of Asceleiaied. 1 Monitoriiis MW-1 (Class II) Tetrahydrofuran Semi-Annual Ouarterlv 4- Ouarter 2005 Manganese Semi-Annual Quarterlv l"'Ouarter 2006 MW-3 (Class III) Manganese Semi-Annual Ouarterlv l" Ouarter 2006 Selinium Semi-Annual Quarterly 3'Ouarter 2006 I I I t I I I I I t I T I I I I I I I Monitoring\Velt (lMatelClac,s)'CoRstituplt , goymal , ' Brequencyof.rsniniillno MW-3 Contd.Thallium Semi-Annual Ouarterly 4* Ouarter 2005 Uranium Semi-Annual Quarterly 4"'Ouarter 2005 Tetrahydrofuran Semi-Annual Ouarterly 3'o Ouarter 2006 MW-5 (Class II) Manganese Semi-Arurual Ouarterlv 4* Ouarter 2005 MW-s Contd.Fluoride Semi-Annual Ouarterly 4* Ouarter 2005 Tetrahvdrofuran Semi-Annual Quarterly l" Ouarter 2006 MW-12 (Class III) Uranium Semi-Annual Ouarterlv 4- Ouarter 2005 Tetrahvdrofuran Semi-Annual Ouarterly 4' Ouarter 2005 MW-14 (Class III) Manganese Quarterly Monthlv June 2005 Uranium Ouarterly Monthly June 2005 MW-15 (Class III) Selenium Semi-Arurual Quarterly 4"'Ouarter 2005 Uranium Semi-Annual Ouarterlv 4"'Ouarter 2005 MW-17 (Class III) Uranium Semi-Annual C)uarterlv 4"'Ouarter 2005 Thalium Semi-Annual Quarteilv 1" Ouarter 2006 MW-l8 (Class II) Thallium Semi-Annual Ouarterlv 4"'Ouarter 2005 Uranium Semi-Annual Ouarterly 4'n Ouarter 2005 Manganese Semi-Annual Quarterly Januarv.2008 MW-19 (Class II) Fluoride Semi-Annual Ouarterly l"'Ouarter 2006 Selenium Semi-Annual Quarterly 4* Ouarter 2005 Thallium Semi-Annual Ouarterlv l't Ouarter 2006 Uranium Semi-Annual Quarterly 4" Ouarter 2005 MW-26 (Class III) Manganese Ouarterly Monthly June 2005 Uranium Quarterly Monthly June 2005 Chloroform Ouarterly Monthly June 2005 Dichloromethane Ouarterly Monthly September 2005 MW-32 (Class III) Cadmium Ouarterlv Monthlv June 2005 Iron Ouarterlv Monthly June 2005 Mansanese Ouarterlv Monthlv June 2005 Nickel Ouarterlv Monthly June 2005 Gross Alpha Quarterly Monthlv March 2007 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 (Irltera, 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 La,b or atory Res ults - Accelerated Monitoring The analytical results for the accelerated monitoring of the various constituents in certain monitoring wells for the months of April and May, 2008 are provided at Tabs E and F respectively. The results of the l't Quarter of 2008 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. Table 3 - Summary of Accelerated Monitoring Results to Date Monitoring lYell(lVrter Class)Constituent GWCL {rro/t,}SampleEvent SampleResult(uo/L) , MW-l (Class II) Tetrahydrofuran I 1.5 2"" Otr 2005 85 4" Otr 2005 58 l" otr 2006 48 2^ Otr 2006 60 3'Otr 2006 26 4"'Ottr2006 16 l"'otr 2007 t4 2"" Otr 2007 NA 3'" otr 2oo7 15 4* Ot 2007 l6 t"'otr 2008 <2.0 2no otr 2oo8 2.6 Manganese 200 4* Otr 2005 215 l" otr 2006 220 2* Otr 2006 230 3'" Otr 2006 216 4* Or 2006 198 1"'otr 2oo7 229 2"" Ofr2007 NA 3'" otr2007 30 4"'Ofr 2007 l5 l" otr 2oo8 l0 2"" Otr 2008 66 I t I I I I I I I t I T I t T t t I I MonitoringWell (Water Clessl Constitueil GWCL (uo/L) MW-3 (Class III) Thallium r.00 3'" Otr 2005 1.60 4* Otr 2005 r.l4 l" otr 2006 1.13 2"" Otr 2006 0.99 3'' Otr 2006 1.lt 4- Otr 2006 1.16 l" otr 2007 0.99 2"" Otr2007 NA 3'" Otr 2007 l.l9 4- Ob.2007 l.l5 t"'otr 2008 0.90 2* Otr 2008 0.86 Uranium l5 3'" Otr 2005 3s.90 4- Otr 2005 30.90 1" otr 2006 39. I 2"" otr 2006 27.6 3'' Otr 2006 32.O 4^ Otr2006 28.2 l* Otr 2008 35.6 l" otr 2oo7 30.2 2"" Otr 2007 NA 3'" otr 2007 17.4 4'" Otr 2007 39.4 l" otr 2oo8 35.6 2"" Otr 2008 ND Mansanese 400 4"'Otr 2005 732 l" otr 2006 1.640 2"" Otr 2006 631 3'o otr 2006 1.370 4"'Otr 2006 682 1" otr 2oo7 848 2"" Otr 2007 NA 3'" Otr 2007 199 4^ Otr2007 1,950 l" otr 2008 1330 2"o otr 2oo8 810 Selenium 25 2"" Otr 2006 25.4 3'" otr 2006 16.8 4- OtI2006 27.9 l" otr 2007 20.1 2"" Otr 2007 NA 3'' Otr 2007 33.6 4'" Otr 2007 8.9 l* Otr 2008 13.8 2"" Otr 2008 20.1 Tetrahydrofuran 23 2* Otr2006 26 3'" otr 2006 46 4* Otr 2006 t1 1"'Otr 2007 It 2"" Qt 2007 NA 3'" Otr 2007 ND 9 I I I I I I I I I I I I I T I I I t I Monitoring Well (Wator.Class)Constituent GWCL (no1f ,)' 4"'OtI2007 ND 1" Otr 2008 6.5 2"" Otr 2008 <2.0 MW-s (Class II Manganese 200 2"" ot2005 250 4- Otr 2005 280 1" otr 2006 259 2* Otr 2006 228 3'" otr 2006 237 4- Otr 2006 228 l" otr 2007 281 2"" Otr2007 NA 4* Otr 2007 142 l"'otr 2oo8 203 2* Otr 2008 258 Fluoride 1.00 (me/L)3'" otr2007 134 2"" Otr 2005 l-3 (ms/L) 4'" Otr 2005 1.0 (me/L) 1"'otr 2006 0.9 (mp/L) 2"" Otr 2006 1.0 (me/L) 3'' Otr 2006 0.9 (ms/L) 4'" Otr 2006 1.1(me/L) 1"'otr 2oo7 l.l (msll. ) 2"" Otr2007 NA 3'" Otr 2007 1.2 (ms.ll'l 4^ Otr 2007 1.0 l" otr 2oo8 1.0 2no otr 2oo8 0.9 Tetrahydrofuran I 1.50 4- Otr 2005 13 ls'otr 2006 10 2"" Ofi 2006 7.8 3'o otr 2oo6 ND 4- Oh 2006 ND l* Otr 2007 ND 2"" otr 2oo7 NA 3',' Otr 2007 ND 4'o otr 2007 l0 1" otr 2oo8 9.2 2" Otr 2008 l0 MW-12 (Class III) Mansanese 400 2"" otr 2oo5 420 4" otr 2oo5 27 l* Otr 2006 t7 3'" Otr 2006 290 4* Otr 2006 92 1't otr 2007 279 2"" Qtr 2007 NA 3'otr 2007 57 4"'Ofi2007 60 l" otr 2oo8 29 2"" Otr 2008 32 Uranium 15 2"" Otr 2005 15.30 10 I I I I I I I I I I I T I I I I I I I Monitoriqg WelI (Weter ClCss)Constituent GWCL (up/L) MW-12 Contd.Uranium l5 4* Otr 2005 16.50 1" Otr 2006 ND 2"" Otr 2006 20.9 3'" Otr 2006 23.5 4* Otr 2006 19.8 l" Otr 2oo7 19.4 2"" otr2oo7 NA 3'' Otr 2007 8.68 4- o1r2007 19.2 1"t OE 2008 16.8 2n" otr 2oo8 16.7 Tetrahvdrofuran 23 2"" Otr 2005 24 4'Otr 2005 t2 1" Otr 2006 ND 2"" Otr 2006 t6 3'" otr 2006 l8 4'" Otr 2006 ND l" otr 2007 38 2* Ot 2007 NA 3'" Otr2007 ND 4^ Otr 2007 ND l" Otr 2oo8 <2.0 MW-14 (Class III)2"'otr 2008 3.0 Manganese 400 l" otr 2oo5 1.860 June 2005 1.840 Julv 2005 2"000 Aue.2005 1.900 Seot. 2005 2,1 10 Oct.2005 I,950 Nov.2005 .880 Dec.2005 1.960 Jan. 2006 2,060 Feb.2006 I,940 Mar.2006 2.070 April2006 2,100 Mav 2006 2.000 June 2006 ,650 Julv. 2006 ,590 Aus.- 2006 .870 Sept. 2006 .860 Oct.2006 960 Nov.2006 790 Dec.2006 960 Jaru 2007 970 Feb. 2007 940 Mar.2007 930 Aoril2007 2020 Ndav2O07 1940 June 2007 NA Julv 2007 NA Auzust 2007 2.010 Seotember 2007 2.060 1l I I I I I I I I I I I I I I I I I I t MonitoringWell (Weter Clnss)Constituent GWCL (us/L) MW-14 Contd.Manganese 400 October 2007 2.t20 November 2007 2,380 December 2007 2.290 Januarv- 2008 2200 Februarv 2008 2080 March 2008 2280 April2008 2.160 May 2008 2,420 June 2008 2290 Uranium 15 l* Otr 2005 65.1 June 2005 58.9 Julv 2005 65.5 AuE. 2005 66.5 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 7l .8 Aus.2006 64.7 Sept.2006 69.0 Oct.2006 66.4 Nov.2006 65.5 Dec.2006 68.4 Jan.2OO7 24.9 Feb.2007 43.8 Mar.2OO7 42.8 Apil2007 18.8 trlav 2007 62.4 June 2007 NA Julv 2007 NA Auzust 2007 ND September 2007 70.5 October 2007 68.6 November 2007 61.6 December 2007 60.7 January,2008 65. I Februarv 2008 64.1 March 2008 ND April2008 61.8 Mav 2008 62.6 June 2008 61.3 MW-15 (Class III)Selenium 25 2"" Otr 2005 79 4* Otr 2005 92.5 1" otr 2006 r02 2* Otr 2006 tt7 3'" otr 2006 tt2 t2 I t I I I I t I I T I T I I I I I I I Monitoning\YeIlflfnter (llnes)Constituent GWCL fuoll,] MW-15 Contd.4'" Otr 2006 tt2 lst otr 2007 89.6 2"" Otr 2007 NA 3'" Otr 2007 94 4'" otr 2007 94 l" otr 2oo8 ll3 2"" Otr 2008 106 Uranium l5 2'" otr 2005 45.3 4* Otr 2005 47.7 1" Otr 2006 s0.4 2"" Otr 2006 47.8 3'" Otr 2006 50. I 4* Otr 2006 s 1.6 1" otr 2007 46.5 2"" Otx 2007 NA 3'" otr20o7 28.6 4^ Otr2007 51.0 1" otr 2008 48.3 2n" otr 2oo8 43.9 MW-17 (Class III) Uranium l5 2"'Otr 2005 23.4 4- Otr 2005 31.2 I't otr 2006 28.2 2"" Otr 2006 32.2 3* Otr 2006 30.6 4'o C)tr 2006 30.2 1" otr 2oo7 23.4 2"" ot 2007 18.2 3'" Otr 2007 20.1 4"' Otr 2007 31.0 l" otr 2008 28.3 2"" Otr 2008 29.4 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 r.0l l"'otr 2007 1.85 2"" OfI2007 NA 3'," Otr 2007 0.96 4^ otr 20o'l 0.89 l" otr 2008 l.l I 2"" Otr 2008 1.34 Uranium 7.5 2"" Ot 2005 39 4* Otr 2005 39 l" otr 2006 42.6 2"" Otr 2006 32.2 3'' Otr 2006 39.6 4^ Otr 2006 42.2 l* Otr 2007 46.9 13 I t I I I I I I T I I I I I I I t I I Monitofing:Well ftrllil,eniClnrs\ConsXltuent GW.ct ;(rtoll,l' MW-18 Contd.Uranium 7.5 2"" O1f2007 NA 3'" Otr 2007 36.s 4'" Of.2007 39.2 1" Otr 2008 42.4 2"" Otr 2008 44.8 Manganese 200 1" otr 2oo8 ls4 2^ Otr 2008 119 MW-19 (Class II) Fluoride 1.0 (me/L)4"'Off 2005 I (ms/L) 2"" o1f2006 I (mell.) 3'" Otr 2006 t (me/L) 4- Otr 2006 3 (me/L) I'r Otr 2007 4 (mplL). 2"" otr 2007 NA 3'" Otr 2007 1.3(msll-) 4^ Otr2007 1.1(ms/L) l" otr 2oo8 1.1(me/L) 2"'Otr 2008 l.l Selenium 12.5 2"" Otr 2005 l8 4* Otr 2005 2.3 l't otr 2006 4.3 2"" Otr2006 2.0 3'Otr 2006 2.04 Otr 2006 t.2 I't otr 2007 l.l 2"" Orr 2OO7 NA 3- Otr 2007 1.9 4* Otr 2OO7 0.8 1" otr 2oo8 0.6 2no otr 2oo8 0.2 Thallium 0.5 4'" Otr 2005 0.57 1st g1r 2006 ND 2"" Otr 2006 0.7 3'' Otr 2006 0.55 4'" Otr 2006 0.68 t" Otr 2oo7 ND 2"" otrzoo7 NA 3'' Orr 2007 0.s3 4'" otr 2007 0.s2 l" otr 2008 0.52 2* Otr 2008 ND Uranium 7.5 2"" Otr 2005 I1.6 4- Otr 2005 I 1.3 l" otr 2006 12.8 2"" Otr2006 I1.5 3'" Otr 2006 8.52 4* Otr 2006 10. r l" otr 2007 9.37 2"" otr 2007 NA 3^ Otr 2007 7.76 4- Otr 2007 7.53 t" otr 2oo8 7.32 l4 T I I T I I I I I t t I I t I I t I I klonitori4g rffel (Water Ctass)Constituent GWCL'(uo/I) 2"" Otr 2008 6.76 MW-26 (Class II) Mansanese 400 l" otr 2005 ,350 June 2005 9s6 Julv 2005 100 Aus.2005 I.430 Seot.2005 1.160 Oct.2005 1.410 Nov.2005 949 Dec.2005 1.030 Jan.2006 951 Feb.2006 874 Mar.2006 1.2t0 Aoril2006 I,100 Mav 2006 1.280 June 2006 1.300 Julv,2006 95 Aus.2006 902 Seot.2006 1.330 Oct..2006 1.6 10 Nov.2006 1.s00 Dec.2006 1.080 Jan.2007 769 Feb.2007 979 Mar.2007 1.130 Aoil.2OO7 1.410 May,2007 910 June, 2007 t-230 Julv 2007 1.280 Aue.2007 728 Seot.2007 NS Oct.2007 t.190 Nov.2007 1.150 Dec.2007 1.410 January.2008 8s3 Februarv 2008 330 March 2008 .390 Aoril2008 .010 Mav 2008 170 June 2008 130 Uranium l5 L" Otr 2005 22.4 June 2005 9.5 Julv 2005 12.6 Aus.2005 26.0 Seot.2005 17.4 Oct.2005 22.7 Nov.2005 12.1 Dec. 2005 t2.3 Jat 2006 10.7 Feb. 2006 9.9 Mar.2006 t7.9 April2006 t4 t5 I I t I I I I T I I I t I I I I I I I Monitoringrilel 0Vater Class)Constituent GWCI, fus/L)Sa4pfqEyQp!. MW-26 Contd Uranium l5 Mav20O6 2.5 June 2006 24.6 Julv 2006 17.6 Aue.2006 10.5 Seot.2006 23.0 Oct.2006 34.7 Nov.2006 32.6 Dec.2006 20.9 Jan.2007 22.6 Feb.2007 44.2 Mar.2007 42.8 Aoril.2007 36.4 Ndav,2007 119 June, 2007 24.5 Uranium 15 Julv 2007 38.6 Aueust 2007 2r.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 17.2 Mav 2008 20.7 June 2008 21.7 Chloroform 35 1"'Otr 2005 230 June 2005 430 Julv 2005 260 Aue.2005 780 Sept.2005 810 Oct.2005 960 Nov.2005 1.100 Dec.2005 1.200 Ian.2006 1.300 Feb. 2006 860 Mar.2006 I.200 April2006 1.200 Mav 2006 l.100 June 2006 260 Julv-2006 7-800 Aus.2006 980 Sept.2006 I.200 Oct.2006 r.400 Nov.2006 950 Dec.2006 1.100 Ian.2007 5.700 Feb.2007 4,400 Mar.2007 1.600 April.2007 2.100 Mav.2007 2.400 June- 2007 660 16 I I I I I t t I I I I t I T I I I I I MonitoringWelt (Water Classl Constituent .GWCL (ue1L) MW-26 Contd Chloroform 35 Julv 2007 1.100 Auzust 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 April2008 1,600 Mav 2008 1.200 June 2008 2.000 Dichloromethane 2.5 June 2005 5.4 Aus.2005 1 1.0 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 ll June,2006 2.5 Julv. 2006 ND Aue. 2006 t2 Sept.2006 25 Oct..2006 3l Nov.2006 15 Dec.. 2006 2.6 Jan. 2007 ND Feb.2007 25 Mar.2007 26 Aoil.2007 JJ Mav.2007 28 June- 2007 -tl Julv 2007 t4 Auzust 2007 9.0 September 2007 NS October 2007 t.2 November 2007 18 December 2007 22 January.2008 15 Februarv 2008 l5 March 2008 66 Aoril2008 47 Mav 2008 JJ June 2008 110 Tetrahvdrofuran 23 4'" Otr 2005 55 Jan.2006 ND Feb. 2006 ND Mar.2006 ND t7 t T I T I I I I I I I I I I I I I I I MonitqringWe.U (Water Class)Constituent GWCL ,(us/L\ MW-26 Contd Tetrahvdrofuran 23 April2006 ND Mav 2006 ND June 2006 ND Julv 2006 ND Aus.2006 ND Sept.2006 ND Oct.2006 ND Nov.2006 ND Dec.2006 ND Jan.2007 ND Feb.2007 ND Mar.2007 ND Aoril.2007 ND Mav,2007 ND June. 2007 ND Julv 2007 ND Auzust 2007 ND Seotember 2007 NS October 2007 ND November 2007 ND December 2007 ND MW-32 Cadmium 2.5 l"'otr 2005 23.8 June 2005 1.7 Julv 2005 2.r Aus.2005 2.75 Sept.2005 2.95 Oct. 2005 2.t6 Nov.2005 2.07 Dec.2005 1.0 Jan.2OO6 l.l4 Feb.2006 2.32 Mar.2006 2.58 April2006 2.96 Mav 2006 1.84 June 2006 0.8 Julv- 2006 3.0 Aup.2006 t.44 Sept.2006 0.96 Oct.2006 ND Nov.2006 0.9 Dec.2006 t.44 Jat 2O07 3.0 Feb.2007 ND Mar.2007 2.42 Aoril.2007 2.24 Mav.2007 6.18 June, 2007 ND Julv. 2007 2.83 Ausust- 2007 t.82 Cadmium 2.5 September 2007 1.18 October 2007 r.20 November 2007 r.47 18 I t I I I t I I I I I T I I I I I I t Mo,dtoringWell(Whfer Clms}Constituent GwcL(uo/L) MW-32 Contd.Cadmium 2.5 December 2007 l.8l January,2008 t.32 Februarv 2008 ND March 2008 1.90 Aoril2008 3.0 Mav 2008 2.08 June 2008 2.21 Manganese 400 1" otr 2oo5 3.740 June 2005 4,220 Julv 2005 4.720 Aus.2005 4.670 Seot.2005 4.s80 Oct.2005 4.590 Nov.2005 4.530 Dec.2005 4.340 Jan.2006 5,090 Feb.2006 4.160 Mar.2006 5,090 Aoril2006 s.070 Mav 2006 4.840 June 2006 4,680 Julv.2006 4.540 Aus.2006 5.160 Seot.2006 4.690 Oct.2006 4.790 Nov.2006 4.830 Dec.2006 4.920 Jan.2O07 5.040 Feb.2007 4.940 Mar.2007 4,920 April.2007 5.450 Mav.2007 4.920 June- 2007 5.470 Julv 2007 5490 Auzust 2007 4.820 Seotember 2007 4.790 October 2007 5.1 70 November 2007 5,583 December 2007 5,050 January.2008 4,950 Februarv 2008 5.010 March 2008 5,660 April2008 5,500 Mav 2008 5,810 June 2008 5,400 Nickel 50 l* otr 2005 71.0 June 2005 54.0 Julv 2005 63.0 Aus.2005 64.0 Sept. 2005 67.0 Oct.2005 63.0 Nov.2005 62.O l9 20 I I t I I I I I t I I t I I t T I t t 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 Quality 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. Modtoringl#ell ($[Iater. Class] 'Consfituent GWCL frrn/L) MW-32 Contd.Nickel 50 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 Aue.2006 59 Seot.. 2006 53 Oct..2006 t2 Nov..2006 56 Dec.2006 62 Jan. 2007 59 Feb.2007 5l Mar.2007 74 April.2007 64 Mav,2007 t27 June.2007 94 lulv 2007 85 Aueust 2007 65 Seotember 2007 62 October 2007 67 November 2007 57 December 2007 66 Januarv.2008 62 Februarv 2008 59 March 2008 59 Aoril2008 6l Mav 2008 64 June 2008 62 T t t I I T I I T t T I I t t I I I I 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) April Sampling: -One duplicate sample of MW-32 (MW-65, collected 4129108) -One field blank (MW-60, collected 4/29/08) -One trip blank provided by the Analytical Laboratory and sent with the samples received by the Analytical Laboratory on 5/2108. b) May Sampling: -One duplicate sample of MW-32 (MW-65, collected 5ll4l08) -One field blank (MW-60, collected 5ll3l08) -One trip blank provided by the Analytical Laboratory and sent with the samples received by the Analytical Laboratory on 5/16/08. c) May/June Quarterly Sampling: -Three duplicate samples of MW-32, MW-17 and MW-5 (MW-65, MW70 and MW-75, collected 6 I 5 I 08, 5 128 I 08 and 6/ 1 8/08, respectively) - One field blank (MW-60, collected 5128108) -Three trip blanks provided by the Analytical Laboratory and sent with the samples received by the Analytical Laboratory on 5129108, 615108 and 6/18/08. These QC samples were sent blind to the Analyical Laboratory and analyzed fbr the same parameters as permit-required samples. 2.6.2 Analytical Laborator), QA/OC Procedures The Analytical Laboratory has provided summary reports of the analytical quality control/quality assurance (QA/QC) measurements necessary to maintain conformance with NELAC certification and reporting protocol. The Analytical Laboratory QA/QC Summary Reports, including copies of the Millls Chain of Custody and Analytical Request Record forms for each set of Analytical Results, follow the analytical results under Tabs E to C. 2.6.3 Mill QA 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. 21 t I I I t I I I I I t I t t I I I I I 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 implernented. 1. Resultsfromfield QC checks (i) April Sampling The results of duplicate QC checks for the April sampling indicated that the duplicated samples were within the Relative Percent Difference goal of 20Yo (see Table 6). 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 each of these cases the reported value was well above the re-established RL. With regard to sample receipt at the laboratory, these samples were received by the laboratory at 5o C, exceeding the 4o C temperature requirement. . Regarding the April temperature excursion, this matter has been addressed in correspondence dated July 7, 2008 regarding Denison's affirmative defense for that sarnple set. At the time of this writing, Denison has received on August 1, 2008 the Divisions findings and response regarding that correspondence and the April temperature excursion and is preparing a response to that letter. Table 6-QC Evaluation April Sampling Event Constituent Duolicate Evaluation MW-32 Dup MW-65 RPD o/o Cadmium 3.0 2.78 7.61 Iron 9040 9290 -2.73 Mansanese 5500 5700 -3.57 Nickel 61 63 -3.23 Cross Alpha 3.4 +l- 0.6 3.7 +/- 0.6 -0.42* (ii) May Sampling The results of duplicate QC checks for the May sampling indicated that the duplicated samples were within the Relative Percent Difference goal of 20Yo (see Table 7). 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 qualification attached to these data by the laboratory were where a reporting limit (RL) was increased due to matrix interference, however, in this cases the reported 22 I I I t I I I I I I I T I T I I I I I value was well above the re-established RL . For this sampling event the field blank indicated the presence of Chloroform at 6.6 uglL. With regard to sample receipt at the laboratory, these samples were received by the laboratory at 6" C, exceeding the 4o C temperature requirement. . Regarding the May temperature excursion, this matter has been addressed in correspondence dated July 7, 2008 regarding Denison's affirmative defense for that sample set. At the time of this writing, Denison has received on August 1, 2008 the Divisions findings and response regarding that correspondence and the April temperature excursion and is preparing a response to that letter. Table 7-QC Evaluation May Sampling Event Constituent Duolicate EvaluatiioEr,. MW-32 Dup,, r M'\[I!65 RPD ',s/; Cadmium 2.08 2.12 -12-66 Iron 9410 9850 -4.57 Manganese 5810 5770 0.69 Nickel 64 63 t.57 Gross Alpha 4.0 +/- 0.8 4.8 +/- 0.8 -1.25* (iii) May/June(Quarterly)Sampling The results of duplicate QC checks for the quarterly sampling indicated that only one RPD value (iron for MW-5 and its duplicate MW-75) exceeded the Relative Percent Difference goal of 20o/o. See Table 8. This is a marked improvement over previous periods (i.e. l't Quarter data indicated ll instances where the RPD value exceeded 20%). In the case of the quarterly sampling event, all sample sets sent to Energy Labs were received within the 4o C limit of acceptance. However, of the four sets of samples sent to the AWAL Lab for tetrahydofuran analyses, one set was received at 5o C. Denison contacted the Executive Secretary regarding this matter on August 19, 2008 (within 24 hours of discovery) and will be seeking an affirmative defense regarding this data set. More specifically, Denison's sample technician contacted the AWAL facility regarding these samples and was told that the temperature upon receipt was compliant with temperature requirements. Despite the discussions with the laboratory previously about the Denison QAP requirement of 4o C, the laboratory personnel reported compliant temperature readings upon receipt because the samples were less than 6 o C and within the NELAC and SW-846 acceptance criteria. Because this situation was the result of a communication error which preclude Denison's ability to resample the error was unintentional. Denison's written follow-up will be submitted within 5 days of the cited verbal report and will outline the affirmative defense arguments and information required by the Permit and regulations pertinent to this 23 I I I I I I I I I I I I I I I I I I I situation. Chloroform For this sampling event the field blank indicated the presence of at2.9 uglL Table s-QC Evaluation October llth gtr.; Sampling Event RPD Equation for Gross Alpha Satisfied ifdifferential analysis ofreported values and counting error is <2 In accordance with Section 10.1 of the Groundwater Monitoring Quality Assurance Plan (QAP) the reported iron concentration for MW-5 is annotated here as falling outside of the QA specification for duplicate samplings. With the exception of the MW-5 duplicate, Denison notes marked improvement in duplicate sample variance. Conitlttenf M\)V;32 MW-65 %RPD MW-17 M\drr70.,;!}6RFD,r,:MlVol:ivIW-75 YoRPD Carbonate ND ND 0 ND ND 0 ND ND 0 Bicarbonate 407 404 0.74 474 481 -1.47 3s7 361 - 1.10 Calciurr 529 s33 -0.75 386 379 1.83 135 137 -1.47 Chloride 32 JJ -3.08 32 30 6.45 50 48 4.08 Fluoride 0.2 0.2 0 0.3 0.3 0 0.9 0.9 0 Magnesium 234 238 1.69 188 t9l 1.58 38.0 37.9 0.26 Nitrosen-Ammonia 0_5 0.5 0 ND ND 0 0.51 0.51 0 Nitrosen-Nitrate ND ND 0 0.5 0.53 -5.83 ND ND 0 Potassium 14.6 t4.6 0 12.4 12.4 0 7.5 7.7 -0.38 Sodium 232 236 t.7t 648 644 0.62 s03 503 0 Sulfate 2430 2420 0.41 2540 2580 - 1.56 1090 lll0 - 1.82 pH 6.s9 6.68 -1.36 7.29 7.13 2.22 7.65 7.7 -0.65 TDS 3550 3530 0.56 4030 4060 -0.74 I 900 l9l0 0.52 Arsenic ND ND 0 ND ND 0 ND ND 0 Bervllium ND ND 0 ND ND 0 ND ND 0 Cadmium 2.21 2.19 0.91 ND ND 0 ND ND 0 Chromium ND ND 0 ND ND 0 ND ND 0 Cobalt 42 43 -2.35 ND ND 0 ND ND 0 Copper ND ND 0 ND ND 0 ND ND 0 Iron 8650 8580 0.81 ND ND 0 84 58 36.62 Lead ND ND 0 ND ND 0 ND ND 0 Manganese 5400 5450 -0.92 108 100 7.69 258 255 1.17 Mercury ND ND 0 ND ND 0 ND ND 0 Molvbdenum 10 1l 9.52 ND ND 0 ND ND 0 Nickel 62 63 -t _6 ND ND 0 ND ND 0 Selenium ND ND 0 7.8 8.1 -3.77 ND ND 0 Silver ND ND 0 ND ND 0 ND ND 0 Thallium ND ND 0 ND ND 0 ND ND 0 Tin ND ND 0 ND ND 0 ND ND 0 Uranium 3.05 3.00 1.63 29.4 29.3 0.34 ND ND 0 Vanadium ND ND 0 ND ND 0 ND ND 0 Zinc 125 124 0.8 ND ND 0 ND ND 0 Gross Alpha*3.5 +l- 0.6 2.4 +t- 0.5 1.8*0.9 +/- 0.3 l.l +/- 0.4 -0.8*1.2 +l- 0.4 1.2 +l- 0.4 0 Acetone ND ND 0 ND ND 0 ND ND 0 Benzene ND ND 0 ND ND 0 ND ND 0 Carbon tetrachloride ND ND 0 ND ND 0 ND ND 0 Chlorofonn ND ND 0 ND ND 0 ND ND 0 Chloromethane ND ND 0 ND ND 0 ND ND 0 MEK ND ND 0 ND ND 0 ND ND 0 Methylene Chloride ND ND 0 ND ND 0 ND ND 0 Naohthalene ND ND 0 ND ND 0 ND ND 0 Tetrahydrofuran ND ND 0 ND ND 0 ND ND 0 Toluene ND ND 0 ND ND 0 l0 l0 0 Xylenes ND ND 0 ND ND 0 ND ND 0 24 T I I I t I t I t t I I I t I I t I I 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; (i) Check samples were analyzed for all methods used in analyzing the groundwater samples. These methods were: Table 8 - 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 8900.1, 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 anallical 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. There were no holding time excursions observed for this sampling event. (vi) The information from the Laboratory QA/QC Summary Reports indicate that RPD at the Laboratory were within acceptable limits. However, there were Carbonate as CO3, Bicarbonate as HCO3 Calcium, magnesium, potassium, sodium, iron Nitrate + Nitrite as N 25 3.0 I I I I I I T I t I t I I I I I I I I several instances where spike recovery data fell outside of the stated limits. The Laboratory quality assurance department was contacted regarding this matter and the Laboratory has provided a written response explaining the acceptability of these data (Tab J). d) Conective Actions The Quarterly Report for the l't Quarter, 2008 identifid that in I I instances the Relative Percent Difference (RPD) exceeded the QAP guidance of 20o/o, that holding times in the Laboratory had been exceeded for l0 TDS analyses and that the ternperature of samples on arrival were in excess of the 4oC requirernent in some instances. In response to these findings the QA Manager visitd the Laboratory on July 17, 2008 relative to these issues. With regard to RPD issues, the results of duplicate analyses for this 2nd quarter reporting period revealed only one instance where the RPD exceeded the 20o/o guidance, this being a lead analyses where sample filtration and matrix interference can account for difficulty in duplicate samples, a marked improvement. Regarding holding times, the Laboratory has terminated the ernployment of the personnel responsible for the holding time exceedances. Finally, Denison has implemented several corrective actions outlined and fully implemented in correspondence dated July 3, 2008 in this regard and intends to propose a modification the QAP, incorporation recent NELAC and SW-846 guidance for sample temperature for volatile and semi-volatile compounds (i.e. less than or equal to 6 oC). During this report period it has also been noted that field blank water continues to yield trace volatile organic presence (i.e. Chloroform for this period). In response the QA Manager has on July 9, 2008 required the sampling personnel to purchase laboratory grade De-ionized (DI) water for field blank and equipment decontamination and to discontinue the use of onsite DI water. Electronic Date Fllci and Format DUSA has provided to the Executive Secretary 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. SIGNATURE AND CERTIFICATION This document was prepared by Denison Mines (USA) Corp.on August 29,2W8. DENISON David Vice President, Regulatory Affairs and Counsel 26 Certification: I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a systern designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or percons 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 knowing violations. Vice President, Regulatory Affairs and Counsel Denison Mines (USA) Corp. 27 IIIIIIIIIIIIIIIIIII l[ '' ll ll\\\//:.? // //// o,$v. ll tl \\ \\\ N\*A\ I+ T38S MW-20a 0 3OOO SCALE IN FEET Mw-22 /o//.////,////////////// EXPLANATION ",*,,li::;I,lll*o,,nn*", f wirdrirenono PlEz'1 perchedpiezometer MW-31 perched monitoring well? installed Aprit, 200'5 TW4-20d temporary perched monitoring' well installed April,2005 TW+23 ///7--:-=-=-:4:--::--:----:::::=/,/'--// $f-- new temporary perched monitoring wella\ installed May,2007 (locations approximE E( ./ r()) /?1 C-E \ )Fr\gD\g)' t <{ \ \\ llil /t rr,rrr-[S'fe CELL NO. 1 i,(,11 t; l1 ^ll 1l 1l 1l 1l gl 1l 1l 1l 1l 1l 1l 1l 1l 1l pl pl Tw4-rprw+gO OTw4-3 OTw4.l2 HYDRO GEO CHEM,INC. SITE PLAN AND PERCHED WELL LOCATIONS WHITE MESA SITE I t t T I I I t I t T I I t T I T t., l" Mill - Groundwater Discharge Permit Grourdwater Monitoring Qualiry Assurance Plan (QAP) Date: 2.25.ff1 Revision: ? Pagea$ot4l . ATTACFfiENT 1 IryHITE MESA T'RANIUM MILN, GROTINI} WAT'ER DescripionofSampliagEvent:fl?q,. {i$aeTr.-a- UtLt,,"rt,l,riL( - DateandTime turfw'gsg 6/\/o6, a,td Sampling(ifdifferent) lYell Purging Equip Use* Jdump or -Uailer Wetl Pump (if other than trenne0-l0ED-- SarlrpliasErven@ Prcv. Well Sampted in Sampling Event-AJA- pllBuffer7.0.?-cj Specific0onductance-ffiJ*g6l65,rsm WetlDepth, I lft - Depth to Water geforc Purging-61:ti-- Casing Volume (V) 4' Well' , .. (.653h) condrtcuncct"ug) - {tat - prrorwdterr*rr l"fl$'ket* werllltaterTemp.(avsil5*Q3- . RedorPotential@rl}T0tuoiaity LArf WeatherCond.,L.r,'" dt.l.Ext'l Amb. Tenp.ffior to sampling cveffiUef3- conductan""- ..lJ?O .-- pn -7.).G . remprature ll{:-1.0- RedoxPotential (ED 373-RedoxPotentirl (Eh), I66t- '0.8\turuidiry 0 Q t, fimu O*=n GaLPuree-d--:a[II- c*o*rrnr" .t Q95 P Time:g 100- Gal. Purged-3!l-. 65- conductance l-6[)?- - temperatup lLt.DL- t"*0.** , 11"Q6 - Redox Potenti.t (E$--}il-- I*u.(iRsdox T:*b PotentialGh) R6-. I T I I I I t I I I T T T I t I I I I I\filt - Groundunri' Discharge Permit froundwaErMonibring Quality Aesurance Plao (QAP) Dats: 1L.17.06 Revision: I Pago'4t of4l Volume ofWaterPurged Pumping Rate Calculation FlowRats(Q), ingPm.5/60= =----" 3.-3.Tinne to evacuate two casilg volumes (2V,f=eVlQ= ll3 trAln Number of casing volumes evacuated (if other thatr t$ro) H-' - If well evacuatcd to dr;mess, number of gallons erracuatcd NameofcertifiedAnalyticall-abor*oryif0&erThaaBnergylabe.dn a Ser a/ fo+q -(t*\-1- ore:'f, AwrLrri1ar,* UJzti- frvt*lllri*l tvnoofSnggde $nmple Tsken (cirrlel $iihitlaVqttms(lnffcateifofter I'fltercd (drctp)4esEr"stiYeAdild(dple) thtid as snedfr€d helowl VOCs &)N 3x40ml YxI\ECT. M N Nutriufs &7N l00ml Y HeSOe N tlcawhlctels VN 250tiil IlD N Ht{O.N Alt Other Non- Rodiolosics UN 250mI u2N NokcservativoAddcd GrossAlpha NN 1.000Bl VN HrSOl g) N O&er(specifY)P N Samplevolume Y& If apreservativcis ttse4 SpocifyTypeand Qrrantity of ltemrvative: I I I I I I T I I I I I I I I I T I I il:77 Mill - Groundwater Discbarge Permit Croundwater Monito'ring Quality Assurance Plan (QAP) Description of SamPling Date: 2.25.07 Bevision: 2 Page40at(l -aTTACflMqNTl \II/ITITE MESA I'RAI{TTIM MXT,T DaE and Time for furging 6/t{ /OS ana Sampling (if differEnt) Well purging Equip Used: -6"*or *bailer Well Pump (if other than Benn*d-E-D,- Sampling Eve ntlfu ,t*6 c L.Prcv" Well Sampled in SamplingEventl.)iti-L9 pll Buffer 7.0. SpecificConductanrc*f A J-uMIIOS/cm Weff Oepn, . llt Depftr toWarerBeforePurging.-10q.6- CasingVolumefir)+"Watt: l0 L8 (.fS:n) 3" Well: (.367h) conductdnceGre) 3t'lil3 - pgof.Wircr(ive) " 7'oB - Well Water ?emP. Cw)-l i:-1L Bedox Potsrtiar @D t'lsLrurbidity O. Ll g WeatherCond.., Orr<r(l^st - Exfl Amb.Temp.(priortosamplingeventl--1-cl'C-- Gat-Gal. Purged-Sr31 . . flnndnnirnce 3"ltill coru,r"tuo"" !tl4A - Redox htentiat fsn)*-!ll- tt*iaity - -0.(7 $ 7-oq - temperature lB'{A RedoxPotEutiat(Eh) Li5il - Gal. Faarlrrrtmcn \qAl pn ?.OQ -remperatue 15,86 - conrtrrr'jance \Lll-l{ pH l.o( - t"*prrur* J? 9l -RedoxPotenti"renl @ LlSl .. Redox Potential eeh)--@iE}-(:i-L"L 0-+& I I I I t I I T I T I I I T T I I t I Mill-GroudwaterDischargePecmit Dats 11'17-06 Revisioa I Gr'oundwaerMoniodng Quality Assurance Plan (QAP)Page4l of4l TudriditY T\nbidi6q ;*-'"' Votumeof Waterfurged Puupias Rate Calcdlotbln $/6t)= =^33 Time to evacuate two casing volumBs (2V) ?=zVlQ= 6L{ FtowBate(Q), ingpm. Numberdcasingvolumesevacuated(ifotherthantwo) -:--:--:I-. - ffwetl evacuatod to drJme-ss, nuurberof gallousevacuatEd Lalre Ont Sr-r- a+ t'o.s So*r ,rgNameofCertifiedAnalyticatl,aboratoryifotherThanBnerryLabs /&q 5e{ at vaa-s ; r, ffie "re*i' fi,,xa-(lT'e*t 7;,:Jii I ]i &peofsamele $aqnple Taken fcflrcle) Eilft$ed {clrtle) Fpser"r,&fiveAdded(drcle) VOCs ,N 3x40mI Y E(x. &N NuEienh N 10Oml Y IIr,Sp4 N Hriaw[fietals 2N 250hI ffiN IINOI N AII OthEr Non- Radiolocics ffN 2fl)mI g2N No PrcservatftrcAddcd GrossAIPha UN l-00OmI VN H,,SO, Cr) N O6erGpoc$)E?N Saruplivolume Y& If apreservative is us€{ SpecifyType and Qurqtity of heservative: I I I I I T t t I I I T I T Mitl - Groundwater Discharge Penrit Groundvrrater Monitoring QuaIitY Assurance Plan (QAP) Datet 2.25.07 Revision: 2 Page4Aaf4l .afl,TAgl4l@lml WflITE ME$A {IRASIIUNd MII,L CROT'I{D WATER. Description of sampling Event2 ;1 " ^ lqv,AetrLa--.yet.Lfut+^^'N6't c iffiiflrt itiatsr**"" H"tMi*,, B'r* ld'*cr Dateandrimeforrurging $/18 /d# anosampling(if differenO '' ' - llleltpurgrnsEquipUsed: -6o*nor*bailer WellPump(if otherthan Be1}l,et)-AEb'- SamptingEventli&sre!toLt hev. Well Sampled in SamPlingEvent-'&hl3 pHBuffer7,0 pH Butrer4.0--?'-.! {-4 f-rrn*rosrc* werlDePth ct5 " , - Specific Conductance--!- - Deprh & water Berore purgine-35-59-- casing volune ,"11 ,'};fitlj$g-:[|li' Condtctance ("rg)- .tl pEofWriter(eve), b-qLl -wellwalerTemp'(*sil5iJ- RedoxPotential(Eh)lllrrntioltv l't8 '[trer*herCond - E ct'l Amb. Temp.(prior to sampline e'*0j-f-L- Time:-odl00,--Gat-PureedJ-95- Tit* Gal'Purged--fl3L- conductaace $S41- conducanee 57'o}= ' - Tempera&tre- - 1S.CI( Redor Porentiar Gjh)--gt--Redox Potentiar feh) tt26 -lubiditY-- '?B tuolo,ty " !17 -conductance S6a}. - cond,ctance L5Q l- pH t'64. _- Temperature l5 j11{ - t I I t I *r Ls7 _ Temperature lf^,3s -Temperahre . lS'iLl - Redox Potential (Eh)-lli{D-(:i I *.f,.T*.t. I I I I I I I I I I I I I I I T I t I MiIl - Glourdmnter Diseharge Permit &ourdwaterMonitoriag Qualifl Assurance PIas (QAP) Date: Ll-fi -a6 Revision: I Page4l of4l t- ll4.g zo Fie;{,^ * o,-^d/.d) €a trr*i*tv -*F' . TurbiditY Volumeof Waternxeed j7'Llq- Flow Rate (@ in gpm. Time to evacuatB hvo oasiqg votumes (2V) st@= = ,F 3 - i=ivlq= -- L3.1 - Ml^ Number of casing volumas evacuated (if other thaE ts'o) -::*:-- - If well evaflrsled to dr5aness, number of gallons emeuabd .- - Name of Certified Analyticat t aboratory if OtherThan fuvrylabs .0n e- $e'r a4 \tf,c's-S:'^-r ors1" Mfi*r fi1.*jT'a*t ,i lrrl/c arl,ft i &,or Lrt .-r Tveeof,$amntg Srmntre Talr0n(drtle) ' 4ltbred(circle) FresgrgsffveAdd8q (circle) VO(].s WN 3x40ul YNi HCL V- N Nuricns N lmrtl Y HaS-04 N Eiawtrfetals VN 250thl {DN rntO. U N AII Other Non' Radiolopic$ @N 25Oml tr)N No PlreservativeAdded GrossAbha MN 1.fil0ml gN H"SO, @ N Other(specifY)6PN Samplevolume Y6D Eapresorvative is use4 Specifyfipeand Quantity of P;eservative: **aAtxo F tt'rlc' I I I I I I I t I I I I I I I I T I I Mill * Gromdwater Diseharge Pennit Groundwater Monitoring QualitY Asstnance Plan (QAP) I.IELDDATA Date: 2.25.A7 Revisio* 2 Page(Sof 4l ATTACIIMENTl GROUND WATER Deseription of Sampling Event: A rq A$Abtt- .V10-^q^^44fiL Locarion (we, name)& iffil'".lru *n isls -ro*^.,^ H"rr.tdl, Dqa ^ l*L,ner Date ard Time for Purging q/a{ lo{ and Sampling (if differenq - Wel purging Equip Use& 6r*nor -bailer We1 Pump (if other than Bennetd-E D- SamplingEvenq Prev. Well SamPled in SamplingEvent- ?- C,pH Buffer4.0.9.0 Specific Conductance-14 J-ulvtr{OSlcm Deptlr m WaterBefore Purging g3 (i Conductance tuugl. b356 : lVell tiarer ?emp' Gvg)-Jjl-SJ- WeathorCond. - Ext'l Amb. Temp.(prior to sampling evenU-151-q:- Tfuna otrls 6ul- Gal'Purgpd--3'3---:- well Depth SflF' q*7 ' Casing Volume (Y) 4" Well: , (353h) 3', Well'..i-45*-(3 67h) pHofWater(avg) h'BS -Redox Potential (Ehdl--Turbidity J.'t)6 pn b'8.{ t"mp"*tr",fHT}r -Redox Potentiar Gh)- Ul5---RedoxPotential (Eh) H l0 TurbiditY-rz&1.17 - 32-1--Conductance $31I Conductance--D--< pH 6.51 - pH 6 '..{S ' ' r"mper"tr* ltd.t0 - t"*p"**'" }f[ ' 33 Redor potentiar 1ghl !{ lo - Redox potentiat @h\ 41 2 (.'' \ WHITE MESA URANTT]M MILI 'i urb "TI =frr,nL t I I I I I I I t I I I t I I I t I I Mll-GrouudwaterDischargePermit Date: 11.t7.06 Revision: I Groundwaer lvlonitoring Quality Assruance PleE (QAE Page4I of41 VotumeoflVaterPurgedMd --- c{'1 Pumping Rate Calculation Time to evacuafo hvo casing vofumes (2V) 5/60 =1'=2V7Q= 30 Al.11 Number of casing volumes evacuated (if other than two)- 'F* If woll evacuabd !o dr5pess, number of gallons evacuated - ., NareofgerrifiedAnalyticallaboratoryifotherThanEnergylabs"ltr:.-.$g,r al far+ Sl.l*r otF----- 'r, il"i,*- LnJc'tr frn*l1T'e*t fYpel8ssuqde $ample Token (cirele) SiiruilqYqtqrye finrficatelf o,&st stes(cirele) Presersf,tive AddS (circlel thdfr ae eD€dfied helow) VOCs ,)N 3x40ml Y frc,.N Nuricnts N 100ml Y HaSO. W N EriawIVlstals 2N 250ht MN IINOr N -Atl Other Non- Radioloeics UN 250mI U2N NoPreservative Added GrossAlpho NN 1-tX,0 ml VN H"SO, @ N OPN Samplevolume Y0D Ea preservative is use4 SpecifyType and Quantity of hcservative: I t I I t t I I I I I T t t Mill - Gmundwater Discharge Perrit Groundwnte,r Monitoring QualitY Assrnance Plan (QAP) Date: 2.25 -A7 ReYision: 2 Page40of4I FIELI} DATA WO Description of SamPlingEventt aY Locarion (we[ name)- 4&\,\)- L\ - Namlandinitids Ti'i Dateandrime rarwgag b I N1 /o6 andsampling(ifdifferen0- Well purging Equip Use& l&u*p or -bailer Well Pump (if other than Benne,liroOt&S 'L"ttr.l' SanrplingEvent ('to!f'^.l \Q*\e/ pHBuffer?.O -7'0- hev. Well Sampled in Sampling Event-SuL}6 pHBuffer4.o 4.Q -Depth m water Before Purg t"s-J1hfr- casing volume ,"11 *X;':__,!Hll' Specificconduct oce-9L ultlHos/cm weilDepth la3''6 - CondueHnce pH of Water (avg) "- RedoxPotential(Eh)-- TurbiditYWetl lVatcr TemP. (avg)- IlileattrerCond. c'iear 4 5'^""'t Exf I Amb. Temp.(prior to s'mpting "'"n0--O8-L' L' Time:J5OJl- Gal. Pureed_- conductance lgrl l_ TiEe:-..--.----Gal' Purged -- Conducta$ce . p t"rp".rt* 1L.53 Temperaurre - : Redox Poterrtial Grr)-38]l-.- rurbidity . l.3l RedoxPotential (Eh)- TurbiditY "'r - t I t I I fimrl--Gat. Purged-Time: . .. Gal. Purged- f'aor$rnt*neE TemPerature Redox Potential(Eh)-RedoxPotentiel (Eh) I I l: I I I I I I I I I I I I I I I I Mill-GrormdwaterDischargePermit Date: 11.17.05 Revisioa I Groundwuter Monitoring Quality Assuarce Plao (QAP)Page4l of4l Volume of Water Purged When Field Paramemfs are Measuled =---=-=:- Pumpigg Rate CalPulation FlowRate (Q), ingpm.Timp to evacuate trso casing volumes (2V) 5/60 = = T=2VlQ= Number of casing volumes evacuated (if o&er firan two). .-. --l.- - If well evacuated to dryrrss, numbor of gallotu evacrreted -.r-----:----':- - NamaofCeftifiedAualyticatLaboratoryifotherThanBnrg,l-rts ')+c-:Sel of-rJQL s to*l'lcl *\lJL Tvregf$omrle $.amnle fa&p(drclel SiinrileVolme firtrcltsitsths,r x'iltere4 (cirele) Preservntive Addcd (cir,cle) 'thdit ac specifietl bdorr) V@$Y)N 3x40ml YfN)$cL ff) u NuEients N lflIml Y osl E$Or ffl N HdawMetals Y}N 25081 )N IINO. TE) N Atl OthEr Non- Radioloeics a7N 250ml A?N No Prreservatiw Added GrossAlohs N)N l-{XlOmI rNI II,SO. ^ TY) N Other(speciry)UN rY"",Y.Y e$/qJ Ifa preservative is use{ SpecifyTlpcaod Quantity of Preservative: I I T I I I I I t I I t I T I t t t t Mill - Crmurdwarcr Discharge Permit Grourdwamr Monitroring Quatity Assrrance Plan (QAP) Dara: 2.25.07 Revision: 2 Page40of4l ATTFCHMBNTl I[/E[ITE MESA. IJRANIT'M NdILT" E|IEI,D PATA WORKSIIE.ET FOR GROUND TryATER, DeseripionofSamplingEvent, inI - clo..J.t 6to*n.lt^r*\<',- - Dare andTime turPurghg .6/ tt /O8 and Sampling (if different) -0- Well Purging Equip Use* y'pump or -trailer Well Pump (if ottrer than Bennet)-9EP- SarnplingBvont O*++".lt C""*t}ld& Prev. Well Sampled in SamplingEventli-,ltl+, * pHBuffer?.0--7''Q ptlButrer4.O -.' t{,(] , Specific Conducano-3?.1-rr[,ffiostcm WeU neptrr-j'3(-5- Depth to trrater Before PurginL-! ! G . 1-- Casing Volume fir) +' WeU: 1O'6 1 ('6Sf n) cooarcmo*Gwl- - )57.6 - plrof,wrtter*"rrl'Yltl'a - tl* weu warerremp. (avc)*-l: :ll* *rCrip.,t*ti"i &ilsilt*uiairy " -LLl Werilher Cond. A rtl. r 5 *lr,+ Exf I Amb. Temp.(prior to samplins eveff)jj} o 6-(-' ConUu"tanc"- )590 Conductance 1S6L ,; p tenrperaturc 15 31 .- ' rempennrrc - I b.'-0 Ll . RcdoxFotsntisl(&)-116(- RedoxPoentiar (Eh) lt I rurbidity--Jl3-t Tlrbidity - tl .i clI rnnrrrrerence )57 )franil*ptnnr.ir ab 8f pn . ?,51 pn 7'50 remperaurre-j{.fiC) - Redox Poential Qh)--lSf.- LJ;T*"b rl.4Q l*rh. I I I I I I I I I I I I I I I t T I I Mill-croundrnaterDischargePermit Date LLJ7.A6 Revisiou I GroundwaerMonitoring Quality Assurance Plau (QAP) llubloltY- --- -- Page4l af4t VolumeofWaterPurgedWhenFietdParametersareMeasured 39.6 -PUmpine Rare Calculsfion Time to evacuate two easiqg vohlmes (2V)FtornRate (Q), ingPns/60= =--* jE T=?YtQ= .l?5 Numberofcaeingvolumesevacuated(ifotherthmtwo) : ----- - ' Ifwellevacuatedtodtyness,numberofgallo,nsevacuated-. ,- . - NameofCertifiedAnatyticdLaboratoryif0therThanEnergtabs"o!" sddY"ds^f1},,o $, Efr-.rr<.an \d+1t linc.r.5trczul Typsof$emnle Saitlrle T;k;n teirielol F-ilte&g fcircle) Presercrtive Adalcd (circle) VOCa N 3x40ml Y H(x. LYJ N Nutrients N l0Omt Y IIdOr )N Hdawlfiehls N 250 N Htilor ff) N Llt Othsr Noa- Rediolocics (5}N 25OErl EDN Noheservative Addcd &ossAlphr fflN 1.m0mI N rI"so, (Yl Ng)N Saopldvoluue Y (N) If apresewadve i8 use4 Specify$peand Qrmntity of fteservative: I I I I t t I I I I I I T I I I t T I Mill - Groundwater Discharge Penait Grouudranater Monitoring Quatity Aqqurance Plan (QAP) Date: 2.25.W ReYision: 2 Page40of 4l ATTACHMEITIT 1 WTtrTE MESA URANIT]M MILT, ETET,DDA.TA WORKSMEI FOR GROTIND TryATER Description of samptingEvent- 2.dA- G,^...1.. G.o*na\r,;a.t r Location(wetrnarne),, ..44,.h1, II - ffiX?lru*itials-r*^1." Holli'ln , K l*" DareandTime twptrrqiilE 6/ lL/Ot, andSampling(ifdiffErent).,uzr+ pHBufferT.Q Welt purging Equip Used: r6ump or -Uailer Well Pump (if other $,un genn*)-Q f D- SnmplingEvent Prev. Well Sampled in SamplingBven pHEuffera.o ' Q.O . ''.'- SpecificConductance'06'Z-ulvfiIOs/cm WellDeptfr. i'\(1 . Depth to lt/ater Before Purgi"e-glgl- casins volamo,rrf ;ffit:**.!fill' condr*ance(avg) 1516 - pHofwnter(avg) " ?'d'L{ Welt WatcrTemp. GvgilL-f,$- ' RedoxPotential (EhljalTubidity .+6U WeruherCond-Ext'l Amb, Temp.(prior to samPling event)-t>3.'C.- (-'' /-anrfrrctence ""LlLl Conductance -AL{fl6 -;- Redox Potsntiat (Etr)--L[Q tu*ioity--313 ruruiditv ] fi?-- c*o*t o*" )'5113 (-nn;rrnrrnrn. ){:"iq PH 7.G:l- r'mperauoe J(Ii- Redox Potential 1.^.b. (Eh)-3f-- RedoxPotertiarcn)- [t]Lt -( l':; Redor Potential Ch)---lg0-- pn- 751 . IS4 t"L"I qs I I I I t I t T I I I I I I I I I t I MilI - CrouaihamterDischarge Permit C*ouadvnterMoninring Quatity Assurance Plan (QAfl Date: 11.17.06 Revisiou: I Page4l aE4l Time to evacuale two casing volumes (2Y) T=2VIQ= -154 t^';a Numberofcasingvolumesevacuated(if otherthantwo) -*,, -l' 6 - If well evacuatod to dryness, number of gallons evacuated - Name of Certified Anelytical Laborarory if other Than *e,+.THM Volumeof WaterPurged Purrping Rare Calculation FlowRate(Q)' ingpm.5/60= =---fi SspBof$f,nple Saimule Taken (cincl6) ' $iiiriile.Vo.lume findlcaieif qllbsr'mik as sDeclfred lrclarrl Eilterpd (dq-cls) Predervefive Addcd fcircle) VOCs f,) N 3x40ml Y 6$ r.'Ircx- (t) N NuEiente ,lN l0Omt Y $DI tf,SOo ff) N tldavsMetals JN 250tul 8N HNO. Q0 N AIt Other Non- Radiolosics vN 25Oml VN NoPreservative Added Gross AIPha $)N l.(mmt (EN E"SO, {Y) N Othcr(sPec$) f-anaral anoruati<'.--s.---- A'N Samplevolume Y@) Ba presnrative is use{ SpecifyType and Quantity of &servative: I I I t I t T T I I I I I I I I I I I Mill - Gromdwater Discharge Perrnit Groundwater Monitoring Quality Assurance Plan (QAP) Date: 2.25.07 Revision: 2 Page0ilof 4l aTTACIppNr r WTIXTE MESA URANIUM MILT, tTP--'.lH^q"ffi HI',?l,:*ff H.I**Description of sampting il#- Iaa- S*^.Iar - G""*nrJ'W.+Lr Sampleriil#*a it itiahSr, -ie]]j& Date andTime torRaryne L/ lllat andSampling(if differen$. Specific Conductaoce'18'7-uIluEIoS/", Depth to Water Before Purgingi{2$-:-A[- lVelt Purgrng Equip used tfiump or*uailer well Pump (if other erro g"*rt)-Q.FD - SamplingEvent-.lQr*g Prcv. Well Sanpted in SamptingEvent-A$-fO pHgutrer4.O. .' q-O -wettDepth- .. |1().ti - CasingVotumeff)A'Wett: ltl'0J (-fsrn) 3" ttlell: .(.367h) pHBuffer7.0 Oonduca'nce (avg)-pHof WetlWaterTemp.(avg)- RedoxFotrntialGD---fuOidity- WeffhsrCond.Exf t Amb. Temp.(prior to sampling eventdff6:-- .rnnrtrnlence 357 Ll p Temperature. IY.OY : RedoxPotenti"t(Eh) J60--RedoxPotetrtial(Bt) iq8 TrxbiditY.l. ut:ru$idity i..0() - conducunce, 3731 . conductance '3 LH ( -w L]? : temperan*e ltQ a. . t"*pro* lt 'E} -isqRedorPotential(Eh)-lz3--* RedoxPotential(Eh) 513' conducrance !tL[] _ f rqpH L.Ld - (i I I T I I t I t I I I I I I I I T I T Mitl - Groundwater Dischatge Permit Groudwater Moailoring Quality Assurarrce fhu (QAP) .33 Date: 11.17.06 Revision: I Pagefil of4l Volumeof Wa6furged Pnmoing BAte Calculation FtowRats(Q), ingPn Time to evacuate two casilg volumex (2Y) T=2V/Q= S5 .. - Numberofcasingvolumcsevacuated(ifothmthatrtwo) -:- - If rrell evacuoted to dryness, number of gallons evacuated - Name of Certified Analytical Laboratory if OtherThan f*t8f*kll.lr..s Senlo$l AnalStic''1 TvpeofSamnle Sdmule TakeU fufrdo) SiihdlsYo.l-ump 0nlHca!-elfslhet llltcred (circle) Prererretivc,Sdiled (Cir.cle) VOCa (Y.T N 3x40ml YGIDT HCL ff) N Nuuienre ,)N lO0El Y SLI tLSOr 0 N l{tirwltfctals JN 25gfu,l MN IING AO N All Ohe'r Non- Radioloeics wN 25Oml g)N trioPrcssruatlve Added G,trossAIPha $)N r-fi)0ml VN H,SO, {YJ N Other(sPecifY) Cvencrat atr<rfqani( gJN Sampldvolume YA9 ffaprasorvative is used SpcciffQPernd Quantity of Pneservative: Mill - &oundwater Discharge Pernit Groundu'ats Monitoring QualitY Assurance Plan (QAP) Dats: 2.25 -ffl Revision: 2 Page40af4l Aqfacgnf,ENTt IVI{ITE MESA TIRANI{'M MILL UryEI,D DASA WORI($SEET FOR GEOUNI} WATER Description of SampliagEvent: 1"il .cl"t.^r\tr -Growtf"^l*\<r Sampler Location (well name) I4w it{ Name andinitialst^^"( ll'lt;{o'g ' llto^ ?^lnc' Date and Time forfureing f^/ 16 /o5( .and Sampling (if differen0, , -. Wall purging Equip Used: /pr*p or -bailer Well Pump (if other than Benott)- Q EI)-- SamplingEvent Q.nmt..l? Gry*4dfu kev. Wetl Sampled in SamptingBvent}U$ pHBuffer4.Q r.1,0 SpecificConductance-{t,-l--ulrdttoS/cm weunapth l?-8'?- Depth to waterBefore rurstns-lgtls- casins volume *rf #;l'.l(-l\!Hll' conduemnse(ave) i6a0 - pHofWriter(ivg)=-,'L Well WaterTcmp. tuus)--llJ3-- BcdpxPote' tial @D3Qlftrbidity '{ I TVeatherCond.Exf I Amb. Temp.(prior io sarrytine event)*eJ:[- Time:-10-S5--Gal.Purged -1.o: Conductarce ?F}} pH t.E-7 -- Timellltl-Gat.Purged li'55' I-nnrlrrctenee ZL*tl pn . G.sz -Temperanue------- itr-15. - RedoxPotpdial Cgh)--a$3 - Rcdox Potential (EhDgct 3ifurbidity --}dl TurbiditY Conductance, aBl? Conductanee iC7? PH----i'ql) - RedoxPotential(Eh) . iel--Ss temperature l5.L RedoxPotential(Eh) . at{O - i*U ,---=t-U-' ' '-L;J,37l\r+rs --- Mill - Grouudwa&r Discharge Pumit Groundwater lltonitoring QualitY Assurance Plan (QAP) Date: 11.17-06 Revision: I Page4l af4l lrvrblirq- . -::- - TurbiditY .-- --- - VolumeofWaterpurgedWhenFieldParamstersareMesur"d, . 3-)'Ol -Pumpins Rarc Ca.l,culation FtowRate (Q), in$tm- 55/60= Number of caeing volumcs evacuated (if other than two)' '.'.- .- If well evasuatcd to dr1[ess, nurnber of gallons svasuebd Name of cerrifi€d Analytical Laborarory if orher Than ** t*t^M Time to et/scuete $g easing volumes (2V) T=ZYIQ= cl l SiiilileVqhuSP fmillcate4oilher thdid tt sDcdfretl f,'tlteretl (drcle) PGervntivcAdded {etrcle)fqpeqfSamDle Sa.mde Teken fclrde) Y HCL )N YOCs N 3xzl0ml Y ES-O1 )NN100eIlItilIIwEN,(nftl fiCIN ffi; (Y) N tleavY trul7lrlD 8'N NoPnes€rvative AddcdFottrer Non- Radiolosics A?N 25Oml (kossAIPha ff/N 1,000 mI N Ifrsor. $l N Other(sPeciff)e)N Samplivolume ruy If a presavative is used, SpecifyTYPoald Quautity of Prcservarive: I I I I I I I I I I I I I I I T I I I Mitl * Groundwater Discharge Permit Groundwater Monitoring QuatitY Assurance Plan (QAP) ATTACSMEN? I WHNE'MESA T}RANIT]M MILL E'IELD DATA WORIGSIIEET FOR GR{}T'ND WATER Description of SamplingEvent: f,"A (l"rt* Sampler Location (well narnel /t\t -L5 - Name aud initiats{,'^" lLll'tl'^{ ' 8{q'?J3" Date and Time for furging L/ t I /O'd urd Sampling (if different) -Well purging Equip Used: y!u*p or -bailer Well Pump (if other than Bennet)-g E l) - SamplingEvent p* "1*\ f**U*\:t Prev. Wetl Sampled in SamplingErrcntij{t pHBuffer ?.0-----7' Q pHButrera.0 ' Q'0 $pecific Conductance-3t J--uMIIOSlcm Depth to Water Before Purgine-jfl{ol- weuDeph l5'l - conduetance favel \OL7 - lVell warer Temp. tave)-J[s!-- 5 *nnu[. Ext,l Amb. Temp.(prior to sampling event]Sk- Conductance . t{Qfl€L - Conductance tt I 68 ' - Temperaturc i6. [K - RedoxPotential @n> 384 -ru*iaity "30 - turuiaity . '.3t - conductance t{ (J 60 - remperan'e_ i6.t/_ t"mp"r"ture--J53i-- Redox Potenti.r fnr,t--1fl-- Redox Potential een) 'i}.\ - Date. 2,25.U1 Revision: 2 Page 40 of4l Casing Volume (V) 4" well:-iq' GE-(653h)- 3" WeII:---I.367h) pHofWater(ew)' 6'71 . RedoxPotenti"t (Hr)34) rurniAil :l I -(', condrrcrance L{[)a[ -PH t.L3 * t,; ':-E7 Redox Potential (Eh) r --- fr^rt b-** *li*.b Milt - Groundwater Discharge Permit Croundwater Monitodng Ouality Assruaace Plsn (QAP) Date: 11-1?-06 Revision: I Page&l af4l ---4 *'-s Votume of Water Purged When Field Parameters aro PumDi{S Rste Calculation FlowRate(Q),iogp* .33 5/60 = =- Time to evacuate two.casing volumes (2V) 1=2VlQ= llot Nurnberof casing volurnes evacua$ed (if otherthau two\ -:-*- ' ' IfwellevacuaddtodrlEsss,numbe'rofgallonsovacuated -''- s Name of Certified Analytical laboratory if Other Than "*O 19-rM ffirugAum,r(tudicate.if otheq &dd rs sD€cified Belorv) E!tr@(ctrde) frcssrslgrcAddsg(eircle)trpe-s8$Egre Somple TiBen (citcle) N Y{N-HCL N VOCs lmatffitt Y\NfiAN II,SOI )N Nurients oN IINOJ Y)N ffiwlvletatg {v) N ADN ffiPrasenativefd"dF otner Non- n^,linlacine A'N 25Oml r$[HrSOa-.Y}N Ctou**Ip[q-lv) N 1.000 ml S*nPlevolume Y (N) lfa preservative is used' SpeciffTYPeand QuantitY of Preservative: Otn"r(sPec$)g)N I t t I T I I T t T I I t I I t T I T Mill - Groundwater Discharge Permit Grourdwater Monitoring Quality Assurance Plan (QAF) Date: 2.25.A7 Revision: 2 Page40of 4l . ATT'ACHMENT 1 WE{TTE MESA UBANTIIM MI[,T, mugr,D GROI'}ID WATER Description of SamPliug Location(wellnarue). fitW t1 , ffi'[, Date andTime forPurging $ /Zg I a6 anasampting(if different) Well Rrrging Equip Use* $wry ot -Aaiter Well Pump (if other than BEnnet)J.E-D-*- Sampling Even .tfilalgg;* bavah,tc+er, hev. Well Sampled in Sampling Evenr qW-*3 A pHBufferTQ pH Btffer4.0 .9.tr Specific Conductun""-f L I-rrItfiIOS/cm WeIl Depth , I I )- -- Deph to Waaer BEfore Rreirg*JJ .gg- Casing Votume (V) 4" tJuell: 11..74. G653h) conrtuctance(avg) :43i - plrof wu*Gus) 1" T"tk --:-(@ Well Waler TemP. tuug)--GaQ-Rcdox Potcntial (E03lLnr$idity ., q0 WeatherCond.Exfl Aurb-Temp.(priortosamplingeven0 @31'c conductarce Z45t . conau"tuo* 1? 07 . TemperaturE 15.3, - Rcdox Potenti at (tu)--!!!-- fr*iairyL RedoxPotEnti"l(Eh) . 9/3 - T,r,bidity /' d Y. ?, cr p ti*,-eg$ujS$G.t. Pureed--ali- conductance ... 4 210 ps b.bT - te,,pranue )b,4 0 - Redor Potenti ot {Er4_ ,35 1-,/ ,frl'\ nth ----:- TimE:-l@-lI3Q Gal. Purged-5,L J- conductance LtBLl4 prr.. t.66 - Temperature [6..61 - RedoxPotentiatCeh) jt{}, ' t -r' -t,'.b--;"-it ( l':, Iwrtl-&orsd$nter DischargePamit Dab: ll'17'06 Bevision: I Crroundwat* Monitori4g Quatity Assurauce PIBE (QA'Pi Paga4l of4l Pumping Rate Calcula$on Flow Rate (Q), in gpm. Time Bo evacuafs ttr'o.cssing,volumes (2v) s/do= = , ,-F S . r=zvlQ= l'55 /"{,t' ' Numberof casing volumes evacuated (if othq than lwo)- ------7-' If well evacuated to dqrness, number of gallms evacuatd NarreofCertifredAnalyticallaboratoryifQtherTtranErergylabsr}ttt Sar oi lfac'$ Sa'-r orr"-- "n -ffii* ".r;i 4,'^l1T'e*t EIEEgfSomde S+mule TuS"n(cirde) Sriftriltevqlqqne findicntetf o4er'rhHii ar snecifred t'ilt€S (cirdel rcsffisssiddeq(drde) hslow) g)N 3x4Oml YNi Hs, u -_Nvo& Nutsicnts N l0Oml Y HrSo,N I*inwlfietals VN 250iil fiDN HNOI N All other Non- RsdioloEics gN 25Oml OPN NoPreseruatiue+dd"d GtossAft,tn &N l-{X}CIml (lN ILSOr ,rN @N **t"Y:Y0) Eaprcservative is ute{ SpecifyTYPeand Qrantity of Eeseryative; I I I I I I I t I I I I I Mill - Groundwater Discharge Permit Groundwater Monitoring QuolitY Assrrance Plm (QAP) g'tgg,pDAt'a DescriPtion of SamPling Date: 2.25.O7 Revision: 2 Pagett$of 4l - aTTAqHfi@NT n WIIITE S,IESA E RANIIIfl{ e/eXLL GROT]NDYI/ATER p temperatrne l{.00- Redox Potential (Eh)--a]7--I t I I I I RedoxPotantirlGD-Al5-- RedoxPotentiarGh) SB ' - L.:; Sampler ,{ . Name and in itials f"*^,, H"tt.\ - &aa*H*'r Dateaildrime tor,.$ging 6/4/os. Ntrtsampling(if different) - -Well PurgingEquip Use* 6"*or-bailer wetl Pump (if ottrer than Bemet)J-ED- ftev. Wetl Sampled in SamplingEvenl3WJSamplingEventLlLegle pHBufferT-0 pllBuffer40 '1 CI SpecificCondurt no-f A l-,,nngosl"* wellDe$h iSLl -Dep& to Water Before Purgins2=L[- Casing Volume *rf ,ffi'] -ry?:g;l]' con*r&ince toe\ 30 VJ . protwiter(avs\ ' 6' {{ - Weltvr/atorTemp .<ous)-)\'.3--L' RedoxPotential t++t&Lt*aiaitv' S-E WeatharCon&--OSEr Exf I Amb. Temp.(pior to mmpl'ne **0-l-1k"j"- cotrdrctasce 3CItE : conductance 3o36 ' '- RsdoxPotentiultEh) )lt{ o.q I rime: lD(S G"l.P* GaLPurged-ECa'- coodr.tun*. - iOM - Conductance 315( -prr ,6'c{ - pH t5q . temperature ltl 'L} - temperatue-, l45O - (.\-..,.o.'51{ - *Ji.-t. I T T I I I I I t I I t I I I i[ftll-GrourduaterDisc&argePermit Dats: Ll.17.M Revision: I Crouadwafrr Ivlonibring Quolity Assururce Plaa (QAP)Baga 4t of41 VolunsofW4erPurged@d $0 .54 Pumpins RatE CalculadPR Time to evacoflte two casi4g volumes (2Y) T=2VIQ- a{tl .- -. . .^33FlowRate (Q), ia gpm. Numberofcasiqg volumesevacualed(if otherthants,o) *---: I -0 - If urell evacuated to dryneus, number of gallons orracurted - - Nameof6ertiftdAnalyticallaboratofyif0therThanEnergyl,abs,/ae Ser- a/ dA.r-.S Se*'+{ a7s''T" ffit* ;;tr fino-(1ve*t I I I I Tvneof$amele Sample Takctr(efftIo) . $FirnrileVoluue# fudiealeifo&,er Filters{ (circle) FseseEratiqe Addsd frfucle) trriii asaDdfied belorr) VOCg ,N 3x40onl YNi HCX-N Nuciei$&N fmml Y HrSOr N HriawMetals &,N 2soiid {9N IINOr N AJI Other Non- Radioloeics UN 250ilI $)N NoPrreservatirreA&hd GrcssAIphE &N l.m0&l gN H'SO, @ N VN *"nt"_:r*"Y6D If a preserwtive is ttceq SpecifyTYpeand Quatrtity of Presorvative: WHITE MESA UEANMJM MX},N, I I I I I I I I I I I t I I I T I I I Mi il - Gmudwater Discirarge Perait Groundwater Monitoring Quality Assu'ance Plan (QAP) ETET,BDATA D*e: 2.25.A7 Revision: 2 ?age4$af 4l . ArrApT{rvfEEEl GROUND WAT'ER, Dare andTime torh$rging {- - q- fi K andsampling (if different)- well purgrng Equip used: Jf,ump o, -uailer Well Pump (if other than nennetytiL- Sampling Event&hagrcP!Prrev. Well Sampled in Sanryling$vent-Ibtd lt pHBuffcr7.0. u -s\t \C Conducunce (ave) lilLl Woll Water TemP. (are)--lg_ft}- pIlof:Wner(ave) . " n RedoxPotentnl(EDSflLTtrbiditv' fiQ SpeoificConduc turrn-3*'J*rrtftwsrc* watrre$t - M# l 4f Depth to water Before Purgins S0..'.SS . casiog volume r'r*.##i:Jl*\jfrly WearherCon 6fWW i; LfL Ext'l Amb.Temp.(priortosa mptins*ven1_/ 4 L conarcance, l'377 * pII 7. i() - RedoxPotentiat @D-285.- RedoxPotential(Eh) 31q t .31 0.37 conductance. l3CO . ps IiB pu JII - remp"rature ILt'51\ . Redox Potential (Bh Tt ..0.s$ t'-'... (: -r''I uab Redor Potentiat (Eh)-*.U-AJ-- o.57 I T! I' I I I I I T I I I T I t T t I t T\tbidtt1 -.. ---: . tutUiAW fI ' Volumeof Waterfrused Pumping Rafe Calculation Flow Rate (Q), in gpm.Time to evacuatg tl,ro -c_asing volumes (2V)^33 T=2VlQ= Numberofcasingvolumeeevacuated(ifotherthan tvrol *---'-- J,-,-(V - If well rr*rrated to d4mos, number of galloffi evacu&te[ --* -Name of Certified fualyticf,l Laboratory if OtherThan Eneagr Iyfill-GrormdwnterDfuchargePermit Date: lL.l?.M Revision: I Grouadwater &4oaitoring Qulity,Auurance Plan (QAP)Page4l of41 o?F fiv'-*l7T'e*t TYoeof$rmple Sample fakeNl f&tle) siialil"e.Yqtme {iuffcrtsifo&er E'liltered (circle) Frcservrfiye.Added (circle) VOCs 2N 3x4Oml YN+.HCX" TY N NutriilS cpN lfi)ml Y HrSO,N Hdowldetak VN 250hl frDN IINOI NAll Other Non- Rrdioloeice (yN aSOEl u2N NoPteservatirroAdM GrossAlpba WN t.(X}onl VN H,SO, SP N Other(speci$) A*r*l fisarr,arair ryN *u":]:t'-"Y8D ffaprescwativeis use{ SpesifyTlrpeand Quantity of Presewative: I I I I I I I I I t I I I t T I t t T Milt - Grormdwater Discharge Permit Groundwater Monimring Quality Assuance Plan (QAP) DescriPtion of SamPling Date: 2.25,U1 Revision: 2 Pags40ot4l A,TTACHMENT I WTTITE MESA TTRANIT'M MILI, Sampler Location (well name) A\r'J ]Q - N:1arl*d initias:'ii","", l'lolli'[og , RlJ4i"' Date and Time forYuriug L/ tl 16% ndsampling (if differen0 - - - Weg purgingEquipUsed: V6umpor-Uailer WellPump (if otherttrangenneq QEL - SamplingEventlJw Prev. Well Sampled in SamplingEveotI$GA pHButrer4o ' L{.O - Weff neptrr , -.67 - .. Casing Volume (V) +" WeU:--@,46-(.6Sf h) 3" Welt:------('367h) pHofWdter(avg). ?-l.} - -RedoxPotenti"r @r*ll35ru&idity o'Sa pHBuffer?O 7'0 SpecificComductance 48'7 unffitOSlsm Depth toWaterBsforePursing J63L- conducan""(avg) t5() l = Well Water Temp. (uvel-l{r. f LI- Werther Cond Sdl,ptr-V- Ext'l Amb. Ternp.(prior to sampling event)--3O.:-g- conductance 6tlF5 coocu"tan .JL5LS pu 7'a4 . temperature lT.Q5 BedoxPotential csh)--5!1-?-- _7b RedoxPotentiar GD . lf 37 -Turbidity."s7Turtidity E'OR WATER r;"rftO1|_ Gal. Pureed_LaL._ r'nnrlrrr"lancn LL\l L Gal.Purged-1-'{ -conductance,. (Sil(- t"rp"otrr"- iB'6L - RedoxPotential@h) 'l }1 . - tlpH llb Temperature 1L .0 6- Redox Potenfi al Ch)-jA-1- f*'b D.6!;-1.*'b.(j T I l' I I I I I I I I I I t I I I I I bsll - Groundwater Discharge Permit GrouudwabrMoriforing Quality Assuraace PIao (QAP) Dae: 11.17.06 Revision: I Page4laf 4L Voluneof Wat€rPurgod P$mping Rafe Calculation FlowRatc(Q), ingm.Time to evacuate two casing volumes (2V) Slff)= =---'fi 't=ZYtQ= @l 3a Nurnberof casing volumes evacuated(if other than two) - .- If welt evacuated to drymess, uumber of gallons evacuated - Name of Certified Anatyticat Laboratory if Other Than "*%5,1M fiosofSamds SgEde f,akcn(drcll} $rihfleYolqqe (indicate if other Eiltered (cirde) PreqsrvadlpSdded ffiFIdt VOCa ff-I N 3x40ml YI$iJ }ICT- N N Nutricnts filN l0Omt Y SL!H,SO. &J N, --._ ' ! I Erirwlfietals JN 250iirl SN mto. a, N Atl Olhgr Non- Radioloeics UN 250mI CPN NoPteservative Added Gruss AIPha u)N l-m0EI EN H"SO, {Y) N {,N Smpldvolume Ye9 Ifa preservative is use4 SpecifyTypeand Quantity of P;eservative: I I I I t I I I I I I I I I t I I T Mill - Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) FIELD DATA DescriPtion of SamPling Date: 2"25-Ul Revision: 2 Pagen0of 4l AITAq,HMENT I WflIIE MESA IIRAFIIT]M MILI FOR G. WATER (. SamPler Location(wellnamd. AW ?B , il#-*Oioitials-u"l'r Flollial*aB' E$'"' P*l*" Date and Time for Purging c/n lrsx andSampling(ifdifferen$ - WellpurgingEquipused y!r*nor-bailer WellPump(ifotherthanf"*'0 QEL - SamplingEvent Prev' well sampled in sampling Event- pllBuffera.o ' L{.O pH Buffer ?.0 -7'0 -SpecificConductanoe-q8'7-uMHos/crn WellDepth ' I lt - Deprh to waterBeforE Purgine- 'hLLl- casins volume *rf ,#i,.ffi$ii' Conductance(avg) 63qS - pHofyriter(av') . s.gq- wetl waier TemP. Gvgil556-Redox Potentisl (Eh*I]lTurbiditv 2'o?- Weather Cond- AesI.S r*nn Ext'l Amb. Temp.(prior o sampting event)SL (j conducrarce Lr$0-7 - pH E.63 - condustanee-,635f, - ,; ' RedoxPotential(Bh) L]7G-- RedoxPotential nihr U7 k rubidity I'61 Turbidity ! '71 temperature- [\ ,i{0 -fiilc*Pureed--acl--Ti -€rt.Pureed-5iL- Conductsnce. tH 8() *Conduct"nc" 6Ll4} - pH . B.to- - PH q q0- tempranrre i5')Ll -RedoxPotential (Etr)Jl5-RedoxPotential(Eh), tll-l ' --\*.t A f .'; T T*.U, i,3.0-_ I I I I I I I I I I I t I I I I I I I Mill - Groundwata' Discharge Permit Groundwarer lVlonitoring Quality Assurance Plan (QAP) Date: 11.17-06 Revisiou I Paryr-4laf 41 VolunEof Waterhrged Pumping Bate Calcttlation FlowRate (Q), ingpm..33S/@= = Numberofcasingvolumesevacuated(ifotherthantwo) -.,- l.'3 - - T = ZVIQ = i$l .- If well svacuated fo drymess, number of gallons erracuated : Name of Certified Analytical l,aborabry if Other Thao *"#:M Time to evacuatB two oasing volumes (2V) Tvppof$rurele Sample Takcn (cl$clc) siln*teYo.tump fiut[eslsiEotber rilterelX (clrclpl Preservadse Added (eirde) VOCs DN 3x40ml Yc$}JICL ru N Nrfiienrs )N 100nl Y $DI HrS_Or 6D. N HriawMctals YN 250iiil MN rNO" [D N All Other Non- Rsdiolosics U)N 250n!@N Nofteservative Added GmssAIP!4 .U) N 1.m0ml MN tt"so. ffJ N Other(sPecifY) G-n.d An"Sn:i! g)N :Y'":'*'YCI9 Eapreservativeis use{ SpeciffTYPeand Quantity of Prcservative: Mill - Gtomdlvater Discharge Penuit Groundwater Moni toring Quatity Assurance Plan (QAP) AT'TA{nMENT 1 WHITEMESA UMNITIM MILI gry-?3%rKoffiffi r:,:"1flJP"y**Descriptionorsr*piogffiro:*"-ad^:6^]f;-G;;;dtd"tsg- Sarnnler Locarionlwellnarne) ALrl ?,5 - *I#'id;rri1iulr1=^^"" H"ll;"\o'*, RlJ"1 P^t-" DateardrimeforPurging .-Ll.0L/$8 urd$ampling(ifdifferent)- ' " - Well pmging Equip Use& ,6u*p or -bailer Well Pnmp (if othcr than n*ro,q--Q E L - Samplins Event-Q,+,J.flt G**^.rloi*l.t Prev. Well Sampled in Sampling Event-nJ/:A- pEBuffer?.0----:L0 pHButrer4.0,-. ' t'l.Q - SpecificConductance-g&Z--uh,ftIos/cm lfeltDepth --laA - Daprh ro lvaterBeforc Purging-!J!!! - casing volume *lf ,r[fi1t:_}}.![|ll' conducftince(avg) ,-.3.665 = pllofWriter(nvs) ' 6'64 = rvvell WaterTemp. (avg)-l-L!!- R€do,(Poential(Ih)SllTurbidity t't't5_ WertherCond.cot Ext'l Amb. Temp.(priortosampling Bven0-el :g-- Detal. ?.25.07 Revision: 2 Page4Dof 4l conductance , 3655 _- fi L,el T"mperaorre& Redox Potential (Eh)*-l OjL- Trnbidiu ti.} temperature l'E' l7 Redox Potential (Eh) tLI Turbidity 1'1L ConducUnce 3.(7?r - dt L.L6 - Conductance .,,-..3f,4}. pH L.La , Gal'R*ged-i3-l-- conductance 36t13 - pH 6'54 -?emperature IE.OE Redox Potential (Eh)--534- {*t ,-g'?5 -, Temperature , ,15.81- RedoxPotential(Eh) 5Oi -[-ji l" t t*"b.'5.Qo T I I t t I I I I I t T I I I I t I I Pagefil of4l Turbidity-.-l---Turbiditv Volumeof WaterPruged Mill - GrouarlwaterDischarge Permit Groundwater Moaitoring Quality Assuance Plaa (QAP) Pumping EgfS. &hulation FlowRafe(Q), ingpm. as)5/60= =--'fi Dae: 11.17.06 Revieion: I Time to eracuate two casing volumes (2Y)T=ZYIQ=# Numberofcasingvolumesevacuated(ifo&erthantwo) --:- - If well evacuated to drlmess, number of gallons evacuated Name of certified Analytical tabriratory if ottrer frran *l$ffi Tvrepf$amele SF nple Taken {4Ii4e) SaiiuileYohue fi"i,-*""Jrj6ffi--i,f oeer filtosel! (circle) PreeelrrntiveAdded (drcle) 'thtdli as sDsdffsd hctnw) (Y.I N 3x4Oml Y60 ECL. ff) N Nutients trJN 100 mt Y $LI H,SO. g) N Hinwlvletals N)N 250-fiI TlD N HI\to- IYJ NAlt OErer 'Non- Radioloeics wN 25Oml ff)N NoPrcservatirre Added GtossAlpha (y, N I.{Xl0mI N I[SO, (Y) N Other (specifY) C.eaeral dnrrruani< gJN gamplivolume Y0)(]ul ffapresenative is use4 SpeeifyTypc and Quntity of Pceservstive: \l ., I I I I I h4ill - Grouodvvater Discharge Perrnit Groundwater Monitoriag Quality Assurance Flan (QAP) D*te: 2.25.ffi Revisioa: 2 Pagea,0of 4l .AErAffiIMENrn WHITE MESA {'BANITJM MIL[, I I I EIE{,T}DATA GROUND WATER DescriPtion of SamPling JilurPrEr ;1 Losation(weuname) /!\a/ eH - Nameandinitialst"^ * H"tl'iL\, iZ*w'P*ly4"r Sampler Tff{^*P"t' b3 {o Dateand?ime turewgag 5/"fi1Oh Ndsampling(if ditrerer*) Slu/o8 ?'^{reg'*k*h*'La' Well Purging Equip Used -Vdrmp or -bailer Wclt Pump (if other than rennet)-(fui}- Prcv. Well Sampted in Sampling EventJ!{tall?sampllrrsBveil {JL,.w,. * G {su^l,Jbk-r pH Butrer ?-0-*-----7'-g pHBuffer4.0 I I I T I I I T I SpecificConOuctance ?EJ-unilIOSlcm WellDepth lZ0 - Dsp& to water Before Pursine-lJ+ga-- casing volume qf :Y:,1'-331+gil)3" Welt: -(367h)conductancetnne) Ll,3L{ - FH of wrier (avg) ., G. t(f(- RedorPoteirtiat (Eh)l7g Turbiditv . b'E)Well water Temp Gvsil'-l-.]15- Weathcr&ntl. Conductance &l Lll2} Conductance |1225 ,. Ext'l Amb- Temp.(prior to samplitg cveniJl-L p pu .L'{,L -Temperanne ?Q.il - Redor Potentitrl (Eh)--S Lt 8-- Turbidity . ll.7 - Temperarure l7.l() - RedoxPotential (eh) .. I t{ 5 - Turbidity -?.tltl conductance*-qAt-& Redox Potential (Eh)-j i-- T*rb t{.oll conduct&nce q?Og - pn L,{\ - Temperature i[. I LL_ RedoxPotenrial fghl- lOJ,f ,.'! '.iI I I v.r!'L 4a I t I I I I I I I I I t I I T I I I t Mill-GrourdwejerDischargePemnit Daiil 1t.17.05 Revision: I Grousdrr/ater Afioaitori4g Qrrality Assuance Plan (QAF)Fage4l af 4L ?u&idity Y,*iaity /11 ' - it' Volnrne of lflater PureBd MdW Pumoine Rat€ Calculation FlowRate(Q),in$m. .-, aS/d)= =-----o-ls2 Numbar of casing volumes evacuated (if other than two) :-----*a- /.J Ifwellevacuatedto&yness,numberofgallons evwed,-- b. h - Name ofCertifiedAralyticallaboraioryif0therltanEnergylabs rrc S"r-,/ fo.'s -qe-*;r oT.F'fO A1r'v.-r,Lot/* s4eli- fl,6*{77c*f Time to evacuate two casing volumes (2V) T =ZYIO= ''$)/Q= Tvos,qtsamlile Sarnple TskEtr (cirrls) SiifiileVo.turyp findcatelfolher milteFEd (gircle) PrcrsrsrfiveAddeil (cirde) vo(}WN 3x40mI Ytr[,-HCL W N Nutrients {PN lGlmt Y HrS-Oa N EiawMetals wtN 250frt WN HNOI NAII Other Non- Radiolosics UN 250ml [PN NoPreservative Addcd GrcssAIDhE (it N f.m0ml VN H,SO, g) N Other(spasiry) A*r^0 f,aor"nait {yN Sampldvolume Y0D Erpresewative is use4 SpocifyType and Quantity of Prcssvative: I I T tr4ill - Groundwater Discharge Peanil Groundwater Monitoring Quality Assurance Plar (QAP) Datn: 2.25.0? ReYision: 2 Page 40 of4l I I t I T I arfacflMEl''Ir I WItrIEMESA URANIUMMILT FIE[.,D DA.TA WORKSIfiET FOR CROTTN.D WATER Description of samplingEverr,- an"- Ci ^r+"" C" Sampler Location(wettname) .[LU ]\ ffirgfu initialslj*^,'" HolliAoB, R$tff'l*" Dare aildTime forPurging U lAlf'{ . andsampling(if different)- I t Ttrett Purging Equip Use& /Ou*O or -bailer ltrell Pump (if other than Benne0--QEL - SamplingEvent Prev. Well Sampled in SamplingBventd4- pllBuffer 7.0 1'O -Specific Conductance-{&7 - uMHOS/cm pHBuffer4-0 4o WellDepth. ll5 DepthtoWaterBeforePurgine itog Casingvolum",rrf#fi1,'*5,![?ii, conductaneetavsl SOOI .-_ pgofwater(avg). ' Q',6c1 -. Weu lyaterTemp. (oosl-l 1 JI-RedoxPoterttiaf fghls[t TurtiUity l.E1 (1onrl-f-lror tl,^c Skler Exf I Amb. Temp.(prior to sampling event) { c.-e-::-{' t**r-g:fO* GaI. Purged--$,35-Titne: o-tEP Gal' Purged-f4-'6----. t t I I I conductance- BC)od - pn G.G} -1t.r3 RedoxPotcntial(Eh)--ltil- Redox Potentiat Ch) -3(ct ' ru*ioityj,.,0ll- ruruicitv l ,l I - Conductance 3()()O - conductance 3OO5 -p w L'7 l - t"*p"ruto* la.9t - t"*p"*arr"J4-O)- Redox Potentior Ceh)---3Za--RedorPotentiat(Fi). 378 - {.;t _ }rg"l '- ' = {_.t. l5-l - f'nnrlrctnnec )fl.qL T t I [:i t"*p"rut*" J3.93 - I I t t I I I I I I I I t T T I t I I Mill - ftounduflerDischarge Permit GoundwaterMonitori4g Quality Assurance PIau (QAP) 3/60 = Date: tL.l7.M Revision: I Page|l of4l Voluneof\EaterPureed@d 34 6 Pumlrins Rab Calculation FlowRate(Q), hgpm..7)Time to evacuate two casing volumes (2V) T=2VlQ= 15Q..". Numberofcasingvolumesevacuated(ifotherthantwo) .. - I .t. If well evacuated to drynesq numberof gallons erarurrc Name of Certified Analytical Laboratory if OrherThar *ryU$:ffi Tvneof$ample ,' . Srmrle Taken (clrtle) Srimnle.Y.gFEe fiudiscte-if o&er filtereg .feirde) PftEeruativeAddcd (clr$e) &tiii as sDecified below) YOCs DN 3x40ml Y60 HCX, N) N Nutrienfs N 100mI YSU ILSOr &) N HdawMetals ff)N 25O'nil 00N III{O1 CO NAll Other Non- Radiolosics V)N 250mI ff)N NoPreservative Added GmssAlpha v)N 1.000 ml .YN II,SO1 ffJ N Other (specify) Gcna.al Ano64qr,<= €JN Sauplevslume Y€9 el Ifa preservative is use{ SpecifyType and Quantity of P:ese,rvative: I I I Date: 2.25 -07 Revision: 2 Page4Dof 4l I I T I T I I I I Mill - Groundwater Discharge Perrnit Grounduater Monitoring Quality Assuance Plan (QAP) FIETT}I}ATA Description of SamPling Bventl AT1IACHMEFIT I WIIITE MESA URANTT'M NfiII,L I I I I Samoler- Location (well name) ,44 t,-I .?6 Nr:#"iainitials RP , Tl]r - Well Purging Equip Used: 6r*nor -bailer Wetl Pump (if other than nenneO*4lraEAtro s '/4o nt t ' SamplingEven hev. Well Sampled in SamplingEvent=L?L pI{Buffer7.0----*JJ)pHBuffer4.0 rl. c) Specific Conductance--3.(.--uMHOS/em Well Depth . .l? t -3fr- - DeprhtowaterBeforepurgine 7dt."06 casingvotume,"lfrffii:___,.!Hlfl Conductance (avg)-pHof Water(av9- Redox Potstltiat (Ett)-TutuiditYWell WaterTemp. (avg)- Date and Time for Pqging Sl zt/ob and Sampling (if differen0- WeatherCond--L)r,E .r'nn{ Ext'l Amb. Temp.(priorto sampling event)--Agj'q- rnnrfircrnnce Sal 6 p temperature lS'?t - RedoxPotenti"l (Eh) Zgt.- Turbidity i3q (_- ' Conductance- p Temperature- Rsdox Potcntial@h Turbidity Tinre:- Gal. Purged- Conductanc' . - Temperature- RedoxPotential (Eh)- Time:- Gal. Purged- conductance :::"' pH- TemPerature-I I I Redox Potential (Eh)- t-;i I I I I I I t t I I I I I I I T I I I Mill - Croimdwabr Discharge Permit GroffidsrsbrMotritoring Qualifl Assurance PIan (QAP)Page4l of4l Volume of IVaterhuged TVhen FieldParameters sreMea$ured ---:- Pumpins Rate Calculation Flow Rate{Q), itr gpm. dr?d ,€--5160= =. Date: 11.17.06 Revision: I Time to evacuate two casing volumes (2V) T=2VlQ= Number of casing volumes evacuated (if other than two) , . " , .----l- _ lf well evacuated to dr5aoess, number of gallorc evacuated . .., - NameofCertifiedAnalyticalLaboratoryifothorThanEnerglr,abs pnr s4 pf or.,Ct peatlo A\^)L TvneofSamile Samnle Take,E (eircle) $amnJeY-o,Irme fiudicilb,ifother Eltered(clrcle) Prererrative Added (qiFle) Ihriii ac gp9$tred helmrl VOCs rv) N 3x4Oml Y rI\I}Hfi.-]N NutricDts (Y.I N t00ml Y. dIfl HrSO,JN IldawMetals rY.I N 250hI vJ N HNo TY) NAll Other Non- Radiolosics UN 25Oml yN Nohes€rvativo Added GrossAluha ff) N 1,0t10 mI Y /trT)H2SO. rY l N Other (specify) @ C?N Sample volune veu QT lfa preservative is use{ SpecifyTypeand Quatrtity of Preservative: WXfiTE MESA I'RANT{IM MTX,E, Mill - Groundwater Dlscharge Peirait Grounrlwater Monimring Quality Assurance PIan (QAP) tate: 2.25.M Revisioa: 2 PagetCO of 4l . ATTACETMEFIT 1 GROTJND WATtsR Description of SamPling Locarion(wettname) t(W AZ m:liLtifials-rt*n,c Hot!'il*t, i)ron!*ln*2r DateamdTimeforPurging bh/nfS - andS'rnpling(ifdifferenB WeIt pureing Equip Used: durlrp w -aaihr Woll Pump (if other than Bennet]--:d€D-- Sampling EventLUa46re!Prcv. Well Sampled in SamplingEvent--a;rfi- pIIBufferTO pllBuffer4 o .9.0 SpecificConductance-lA 7-ulvtrIos/cm wetlrxpilr S(99' QS - Depth t0 Warer Beforc Purging-31-LI:l_- Casing Volume (V) 4. Well: E8rtt{ (.653h) 3 " WeIl :-------------:(J67h) Condueencetave) IL"l l?. q- pHorwater(arve]..,a- l - WellWaterTemp .(rvel)-g.-1-- RedoxPotsrtial @Dlfl-Twbidiy I ' q2 WeatherCond .---jA Ext'l Amb. Temp.(prior to sarrqi.iing event\ -L1J- (,._ , rimrjll-Q5- Cial. Pureed--h.6-- Time -l[lt) Gal- Purged-l-1--f5- conductosce [q]q - conductance l.{"131 - pP Redox Potcrrtiaf Gh)***3O0- Trrrbidity t.63 .. Redox Potential Ch) '}ffd rurbidity . l-f3 -conductance i37-5 - pH .,7.o3 * t"*p"** lsl,-t{-t"rp"rut* [b@. 2l? RedoxPotentiat (Eh)-339-"- RedoxPotenri*Wa> 4tO " - l,^^"1 ! ... | ,i 'Lrl"l3 -- I ",lh { ,3q I l! l' I I I I I I I I I I I t I I I I Mitl-&ouads,ats{DischargeFermit Date: Ll.fi .a6 Revision: I Grormdwater lf, onitodag Quetity Assurance Plas (QAP)Page4l of{t Volune of WaterPurged Pu4pine RatE Calculation FtowRate(Q), ingtm.Time to evacuate two casi4g volumes (2V) T=ZVIQ= l?X.ic\5160 = Numberof casing volumesevacuated (if otherthan two) -*:-'-- *: I .b - ff well evacuatfo to dryness, nuurber of gallons evacuated . .. - NameofCertifiedAnalyticatlaboratoryifCIherThanEnerg5rlafs,dn c Sef o/ t'oe.! 5<b-r o?F'f, il"i"*' q,Jati' fi^*l1hi*t TYneof$pnele Samnle $aken(dr-c!e) SriiinileVolnmeffiflnrillcotelloftE Eliltsred (cirde) PresemrtiveAdded (circle) 'tlif,ii ar eo€sifiGd klow) voG )N 3x40ml YN HCL $ N Nuftients {f, N fmEl Y HrSOr N EriawMetels v,t N 250iirl MN m[Or N Att Other Non- Radioloeics SN 250rnl vN NokeservatiwAdded GmssAlphn UN 1.fil0El VN H".SO, u N 0therGpeciSi 0*r^.0 frus*sil. {&N -r.r::r,]y Y& Ifa presorvative is use4 Spci&Typeard Quantity of P;esenrative: v' Mill - Grouadwater Discharge Permit Groundwater Monitoring Quality Assurarre Plan (QAP) .arTAgmry$lTt fi.TEI,BDATA Deseription of SamPling Sampler Location(wellnamel tAtN 2ft Nameand Dare: 2.25.07 Revisiou: 2 ?age40af 4l' GEOI'ND WATER ?- cr WHME MESA T]RANM]N{ MIL[, DateafldTime fo1g.wgingJ -3- A8 andSampling(if differerrq - - Well purging Equip Used: 6"*or -bailer Wetl Pump (if other than nennet#.ED- SamplingEvent Prrev. Well Sampled in SamplingEvent-.AU.& pHBuffer4.o. ' 9'd Spmificoonducanse-lL f-ul\,lHos/cm Wellf,repttr . ll./l - Depsr to Water Beforehugin * ? V' q { .. Casing Volume *r1"#"i::'t*&:;:ry condueftincetavgl .36*{'r - pllofwnter(avg}. L-}l -wen water Temp' (avg)_]-S{0-RedorPotential(Eh)'1:?-LTrr*iaity I 60 WeatherQond . ./' ; 3,A ExftAmb.Temp'{priortosamplingeve*tJ/Jz- Time:jV&$*Gil. cxlrfircwlx 3L4f, ,: p RedoxPotentiat@h, 3J- 7 -Turbidiry l'?-<t.3g temper"ture l'i ' 65 RedorPotentirl(Eh) lql y ellr- ' Btu^'* A,a kss paa>,iles, (t{€\a\'\'r ^ I Tirne:-l-{-!5-Gal'Purged---ll-@ }- ' lii#r*'*oonductance 3 ? 62 - irrr'*t temperarure I {'Lll l' RedoxPotentialfgh)--3"'&-- t l*r)I:i,'*-"I qcllout bul I f1*"in1'' . conductance .1{ljt - pH {:,o6t J .!I .'; I I -raL I .6q --T-*.LL I LA ' I l! l: T I I Mill - Croundwater Discharge Permit Crourdwater lVlonitoring Qraliry ^Assurance Plau (QAP) Date: 11.17-t!6 Revision: I Pap{laf 41 ?u&idiry TurbidiEr Volumeof WaterPweed Pumpige Rab Calculation Flow Rate (Q), in gpm. Time to evacuate t{Yo easing volumer (2Y) $160= = "fi3 l=l\!Q- l2.ttvvi*.. .. Number of casing volumes evacuated (if o&er $an iwo) -- : If well evacuatcd to dryrnsss, number of gallons evrcluEltqd P / a -NameofCertifiedAnatyticallaboratoryifotherThasgnergyl.aUs &e S":r.ol. t'dcs Sl'-nr oFF'fr r4on*-.,Ln*- t^)z't'i- $6*{77.d,'*I t I I I I I I T I I I Evneof,SamulP Samole Tqkbn (efrtle) S,iihriteVdume ftuffcahlfothsr Eitqlpd (circle) Pres,erurtive Added (dTrle) 'mfiiil,as speoiEcd halowl VOCg a)N 3:c40tnl Y$r ECr. w N NtrfiiEnts &N l0Omt Y II'SO{ V N Hdaw}Ietals VN ?fitul fraN HNOI N All Other Noa- Radioloeics ON 250mI g)N No PreservativeAddcd CrossAlpha UN l.tmmI VN HrSOr U) N Other(sPeci$) Le*d fr*n .*ir. (yN Samplevolume Y0D {u) If apreserrrative is use{ SpecifyTypeand Quantity of Ppserv&tive: U I I I I t t I I I I I I I I I I T I Mrilt - Gmundwater Discharge Fermit Grouadwater Moailoring Qualiry Assurance PIan (Q@) ETEI,BDAT'A Date: 2.25.W B,evision: 2 Page40af 4l . ST.TACHMENTI $TTfiITE MESA URA.NfiJM MXT,L GROUIqE}WATEE Description of Sampling Event:i, "^,. Wtit$e'* Location(w"ltouro"i l{hl - ffi*ilu*r,r, s-,,,nn"' Hnt,ilaf, i2yan l*t"ncr Date andrime rorrurging 6/g/of ano sampting (if differen0- Well purging Equip Used; :dump or -uailer Well Pump (if other than Benne0 6 FIL- Samplins1v.,ut(l$,er&) L.ft$$nok, Prev. Well Sampled in Sampling BventlWj8 pXBuffer4.0 ' ?'0 ' SpecificCondu"tun"t-tLa-,rmtOSl,, WeltDepttr'-' lfl Depth to water Beforc Purgrne-IIEJ- casing volume ")31 !tffiLjjl:a],![;ll' Well Water TemP. turel--15--}.!-- pHofS[nter(avd .t-']1 RedoxPotential (gh) a5lnt*iaitv 7' 6?' WeatherCond.Ext'l Amb' Temp.(prior to sampling even0-!IXc- pHBuffer?O (": , ffis---- cal. Pursed--U - 25-ffic*Puies.d-JJ- Conductance L{}-7$ - pu f"'tl3 Temperature .l5 -A.}. . Redox Potential (Eh)--}? 7.- t rtiaity Srit - Conductance, Q-551{ - +-- pr.- . 6 H4- temperat,re.. ILl'Q-{.- RedoxPotential(Ht). et4[ -n 'uiuity 4"78 - Conductance L{31: prr L.3}- . -- fi*t-fpaO-- GaI. Pureed--aAal-Tine:-Lq{Q*-GaI. l-andrrct*ric. q1(-q p 1,.5.c,1t bjt;|? I I t remperatnre l5-tJ.t{- Temperature" '.1'5 4} - Redox Potential (Eh)--a;S-.-- "T-.^.bid.'\'T t.] [(t RedoxPoteatialtgh) aA6 -t:i I t l' I I I I I I I I T I T I lr lr lr lr Mill-GrourdwaterDischargePermit Date !117.A6 Revisioa I Groundumter Monitoring Quality Asauraace Plan (QAP)Pagefll of 41 VoluneofWaterfurged O Sl.?i - - Pumptng Rate Catculalign FlowRate (Q), ingpm. a -a5/60= =---- Number of casing volumes evacuated (if othen dmn tcro) *:-:-: ._ If well evacuated to dr;pcss, number of gallons evacuated. . Name of CErtified Aaalytical Laboratory if Oitrcr Than Enerey t abs , r, e $er "l fO e + ,--q crtur rtF T, .4avp-a,Lo4. ur'tT' fin*l1?ra*l Time to evacuate two cesing volumes (2V) T=tVle= Qll Atn __. . - . TweofFomole sm& Takee (clrcle) SirinileVollue (tuffcateifo$hcE Etltsred (circle) P. gerorsettveAdiled {d{'de) rhfiimsrcdfied VOCs ff)N 3x40ml YN5 E(T- IY N Nufients N l0OmI Y HrSge N EiawMctals 2N 250hI MN H{O.N All O&€r Non- Radiolosics O'N 250mI (pN No PreservativeAdded GrcssAlphr UN 1.m0ml $pN H'SO, @ N O&er(specify)(yN Samplivolume Yry If atrneservative is used, Specifyffpeand Quantity of Ppservatiue: FTE[,g] BATA ]ryORESffiET' EpR GRO-['jF[[] warBR Description of Sanrpling Eve *: A ^d {t)vAersa- (a0'r'*"'l"tncr Date andTime forn'eing 4 Alf /46'- .ana Sampling (if different) WellpurgingEquipUsed: v(urnpor-aailer WellPump(if otherthanBennet) d-ED'- Sampling Eventli&acre!Prpv.'tlVell Sampled in sampling EventJqW.;Q pHBuffer?-0.pHBuffer4.o ' t o- SpecificConductance-14l ult Hoslcm wellDepth I 10- Depth to Water sefora Pursins-19".}3- Casing volum* 021 :y"tL2IL739-('653h)- t" Well:---*-(.367h) Condrictlincefrue) ,)l33 pHof,'[rater(irvs)'t'et YYell water Temp. towl-l--7 : O1- Redox Potential (EDigTurtidity o 'Ge we*hercond.:.lsar-tl.,z 1,6:.c&-- Ext,l Arrb. Temp.(priorto sampling evenr)--es:-E- &nductance ZqqLi -trnnrlrretnnce I I l0 temperature i5.iq - Redox Potentiaf Gh)1,20-RedoxPotentiill@h) 227 . ba conaucmncej S 6O pH* l'q- Temperahue lB'7tl'.- RedoxPotential(Eh) , e66 ' {r,,'-l e I I I I I I I I I I I t I I I Mill - Grotmdwater Discharge Perroit GrouEdwater Monieoritrg QualitY Assurance Plan (QAP) ' ATTAC.HMEFI?.I WTEITE MESA URANXT]M MTT,L bate: 2.25.07 ReYision: 2 Page4Baf 41 T T I t Redox Potential (ili-?A6- I T t I I I I I t I I I t I I T lr lr lr Mill-CrourdsEtedDischargePermit Df,te: LL.L7-A6 Rwisioa: I 6rouadumia'Monioring Qualiy ^Assurarce PIaa {QAP}Page(Laf4l /----' Volumeof WarerPurged Puunring Rafe Cgtculation Tirns to evacuah m/o caeing volumes (2V) T=2V/Q= .. l?.,5 -G4Flow Rate (Q), ingpm' .-, =Slff}= = "DJ Number of casing volumes evacuated (if otber than two) ----- - If well evacuated to dryaness, number of g:allors euacuated - Name of Certified Analytical l..aboratory if Other than Energy A?F fi,n*l1Tt4*t [Yoeo{Sample Sarypte TalreB (circl4 SrimnleVohme - (lnffcatsif o&er Ellltercil (drclp) Prcrersstire Adaled (@e) thiiitaqapedfl4 helorrl VOCs WN 3x4Oml YN HC[" tr N Nufrients @N 10081 YN rrso^ W N HdewMetals VN 25O'r,l frpN mo, $ N fut other Non- Radiolosics uN 250mI OPN No Prreservatirre Added GrossAhha &N I.000mt s/ N I$SOr @ N Other(speciS) A*rn l frw@drl urN Saenplivolume YeD E a proscrrrafive is uec4 Spec$Typeand Quantity of Preservativa .u' I I I htlill - Groundwater Dischmge Penrit Groundwater Moniforing QualitY Assurance PIan (QAP) Date: 2.25.07 Revisioa: 2 Pagez{Oof4l t I I I T I I I I t I I T . ATfACflMtsnrrl WHI?E MESA. {IBANT[]N{ I!{ELt fi'IET,BX}ATA DescriPtion of SamPling Sampler tocarion(well name) #lil jl- Nanreand GROUND WATER Well Pump (if other than gennet) d FD- Prev, Wbll Sampled in SamplingEvent3\.I30 pHButrer4.0 - '..9'CI WexDepth i3O - (.. Date and Time for nuging Ce.r/q /n E anU Sampling (if different) EquipUse*6r*ror-bailerWellPurgtng SamPlingEve pHBuffer?.Q Specific Conductan"e-fE J-uIv&IOS/cm Deprh loWaterBeforePurging. ?.lg- CasingVolume(V)+. Well: 7 {t3 "('6Sgn) condrica:nce(n g) l55S : puofw6*(u's)1'.Y:tl'5-(ffi WeltWarerTemp.(urs)-l-L-$!- RedoxPot'ntial6h)s{S Turbiditv -8'66 Weather Cond3.Jil-,4*derrl*J^r J SorncU*rot.r6 Sr.+ Ext' I Amb. Temp.(gior to sampfing avent)--}SL firr,-nfO-* Gal. Purgedl.G-firne.,j5arB--Gat.Pureed-l-C5- condrrctancejL pn .1.14 - conductance. l5l9 ,, . p RedorPotential (Eh)--e$Q-- RedoxPotsntiar @hl ']t I - conductan"e. [5(3 -pH -7lt - remperature F.io - T I I t-,; rurbidity $fi .- Tu*idiry 0'*l- contu.tn" 1580- pH - 7.W= t"**our"-i 5-45 -_ RedoxPotentiarGh)-lj.06-- RedoxPotenti't(Eh) 31{ -' ;4ff}l (*,v. ".o i7- Y-t ,gJ' MilI-GronudqmrerDi,sciargePermit Dass: 1L.17.05 Revision: I &ormdnnurerl&rriffiing Quality A,*suance Ptan (QAP) FlowRate (Q),m8llm'" 3 s TimEto ev&cuaE S/@= =T =ZYIQ= Fage{lof4l Volumeof Waterfurged Pumuieg egeg4letdatisg two casiEgvoluees (2Y)}}q Numberofcasingvoluns$evBcuated(ifotterthau two) -.-* && !- I -ff well eyasusted to drlmess, number of gallons evacuated - Nams of Certifted Analytical laboratory if Other Than Bnergy Labs- flr e .S.er- -af . fo a ! S e*+r a7s' T, il;,n *' tF ati- fi6*l7T'i,*l Tvpoof$s$dte $amnfie Ed(etr(drcle) SriftrileVolume - dnffcateifo&s X$tsro0 (circle) Preseruafice Added (dfcle) 'thfiii {s-Epedff64 lralorrl VOCs g)N 3x40ml Y HCL U. N NuEiciltg N 100mt Y I[z$g*N E6awMetals vtN 250hI tyN HNOr N AII Other Non- Rrdioloeics UN 250mI G2N NoPreservativeAddcd GrossAlpha UN 1.tX10 qI VN HuSOr @ N(yN Sampldvoluue Y6D ff a preservativc is used, SpecifyTypeand Quantity of Ppscrvative: I I I I I I I I I I I I I I lr lr lr lr lr Description of Sampling Event:..I| i q, {$tA A+,+ vr Lb ry$ ^t^il Ll Sampler ,1 l,ocation(wellname) /tL/ '?2. - Nameandinilialsy.e,n 'r H'il'il*,, D\aL?*ln'c( DateandTimerorrurging 6- f' og ana sampling(ifdifferen$. - qlelt purgrng Equip Used: y6mp w *Aailer Tllell Pump (if other than BenneD d €'D- Mill - Grourclwater Dis&arge Perinit Groudwster Monitoring QualitY Assurance Plan (QAP) Dae: 2.25.a7 Revision: 2 Pase4Dat4l . aTTAcIIh@, NT I WTUENNNPSE IIAAJqTT'M MII,L ['TE[,DDATA GROT]ND WATER Sampting Event&LPqfta!Prev. Wetl Sampted in Sampling Event--&'A pllBufferT-0 pH Buffer4.Q .?.CI- Specificconductance*f*T ulvfil0s/cm WellDepth l 31' f, - Depth to WaterBefoePrrging--3L;13- Casing Volurre *rf #;,:=:sffll) conduc&ince(aw) 3JHi . pgofWeter(irw)' t'36 - WellWaterTemp.("rgl-j'I51.- RedoxPorential@h)asLturbiditv [.I WeathsrCond . oln, 1 , fi-, ,n- Ext'I Amb. Temp.(prior to mmpling event)--!j3:- F^-,fir^rnnna- 374t p te,,*,awe | 3.,2,3 cooducmno" 3.7 3'? -o",, - L :1 Temptawe 1,3 '2! -Redox Potcntial feh),- 2 ?L'lRedor Potential @D2H.- 26.3Tu6idity rr*iaity ,J'f' Y - f rr**ZlZ-Gal. Prrresd-j!-?j[-.11r", Ozff Gal. Corrr*t*c, 3133 n* [r-s \ ptt ., L' '3 L ' fr*Wr^rr*, 19'b\ Redox Potenti"r feD-JJ-2--i .l; ;\*.;' It'l:!,:I.!. RedoxPotential -{L" t{^o\ - q3 I I l: I I I I I T I I I I I I t I I I Mill-GrormduraterDischargePeranit Date: LL-17.06 Revision: I Grouudvnuta' ldorituing Quality Assluance Plan (QAF)Page4l of4L Volumeof WarPrgursed Purying Rafe Calc. ulalion Flow Rate (Q), in gpm. .-, a5/60= =--------ol2-Q- Time to evacuate two casi4g volumes (2V) T=2VlQ=C 2rt Numberof casingvolumesovacuated(if oiherthan t*") ----'-." /^ 2 4y Ifwellevacuatedtodryness,numberofgalloruevacuated- ... ."J/ra .. - .-.. NameofgertifiedfualyticalLaboratoryif0&erThanEuergylabs r4L Ser df t'Oc3 -\a+'-r 6v5:'1, ,G;i* e+,+r fi1-o-t1Tc*l Tvoeo€Sryute SEqrpIe Tnkm (cinte). SirinileVolnme._-findicatcifother filte-rpd (ciudel FsFenrafivBAddd(ckle) thiiri ae EDedfiGd tielor)' VOCg 2N 3x40ml YN$.ECL V- N Nuhicnts N 100mI Y ErSOr N Heawtrdetals 2N 250hI I\D N m{Or N Att Other Non- Radioloeics ON 250m!PN NokreservativeAd&d GmssAIphtr QN l.{n0mt SPN I[SO" (!) N(yN Sampl6volume Y& Ifa preservatirre is u$€4 SpecifyType and Quantity of Prcserv*iva I I I I I I I I I I I t I T I I T h{itl - Cnoundwater Discharge Pennit Groundwater Monitoring Quali$ Assurance Plan (QAP) Date: ?.25.07 Rpvision: 2 Fage 40 of4l DescriPtion of SamPling Location (wellname\ (4N 6 0 - SamplerNil#*d inttials,Tan*vc la. A'g4 Date andTimeforPurging $' 2.t' OY and Sampling(ifdifferent) lryell Purging F4uip use* Sump o, jirc, $Iell Pump (if ofher than Bennet)-:- Sarnpling Evenl Prev. Wel[ Sampled n SarrplingBv entJu/& pHBuffer 7.Q p[Buffer4.O ',,, l'4 specificconductance-{&'I-uldlros/cm lYellfxpth a{P -Depth to lYater Before Pwgins-n/ fi-- casing volume t"lf #iJ:,::;ll' Conductdncc (tvg) '' - PH of Watef WellWaterTemp.(avg)---.,Y-RedoxPotential(Eh)--:-TurUidity- WerttlrerCond. -. --.,: Eld'lfunb.Temp.(priortosamplingevent)-:- "* Time: {Q"{o Gal-Purged-Tirne:-,-* Gal. Purged---__---,- Conductance p t"mp"ratu*. -L Redox Potenti"l (Eh)-3gA-Redox Potential (Eh)- Turbidifl ..l.io (', Temperat aETACHMEFIT 1- WIillE MESA URAI{IUM MILL [.i TimE:-Gal. Purged-tim",- Gal. Purged- Conductance - RedorPotential (Eh)- pH. - TemPerature - ...- Redox Potential (Eh)- I I b.r. Blc*-t( I I T t I I I I I I I lr lr lr lr lr lr lr lr VolumeofW*erPurgedwhenFieldPacafiEtersareMeasursd - -:-" .- PumpineRaE Cahulatigr Flow Rate(Q), in g,Pm' <-'Tims to evacuatetwo casing volumes (2V) T=2VIQ=, +- Numberof casing volumes evacuated (if otherthan two). Ifwellevacuabdtodrymose,numberofgallonsevacuated .. * - Name of Certificd Analytical Laboratory if Other Than Energy Labq To .4wt- Mll*GroundcnterDischargePermit DBte: 11.t7.06 Revisioa I Grouudwater Moaibring Quality Assurance Plan (QAP) furbidity -:-l Turbidiry Pagefil of41 S-o^- ?vpeof$a{SDle Sample TakeE (cincle) SrimiteVqtrmp {irylicateif other thdii assDeiEoal f,stcred (ctrcle) Prasgrva$ve Adtlcd (drde) hdorrsl VOCs g)N 3x40mI Y N)HCL V/ N Nutients N 100ml YOP Er.SOa q( N reawMetals N 250frl tr)N HNO3 \Y N All Other Non- Radiotosics YN 250ml 9N NoPresersative Added Crross Alpha tfiN 1-m0 El MN HzSOr Cgl N Otlrer(speciff) l:t, ' tzl Ar,#*', &tN :*'u"Y YG' If a prcservative is use{ SpecifyType ard Quantity of Preservative: I I I I I I I I I I I Mill - Oroundwater Discharge Permit Groundwater Monitoring Qualiry Assurance Plan (QAP) flELD DATA DescriPtion of SamPling Date: 2.25.0? Revision: 2 Page 40 of41 ATTA@IENIT 1 IffiIITE MF"SA URANIUM MILL Location(welt nu*") M UV 6'f Date andTime for Purging Weil Furging Equip Used: lglump or -bailer Well Pump (if other than genneq-&E$* SamPlingEven Prev.lMell SamPled in SamplingEvent- t/ ttpIIBuffer4.0 WeIl DePth ,. plhuftet7.o a'() specific condu ctnce-4'{' ? $*tostcm DepthhwaterBeforehrrginei. * casingvdume,'Lfrfli}.-,.!fill' conductance(avg) - pHofwater(avE)' - v{ell waterTemP. (avg}-RedoxPotential(ED-'ru6idity weather cond . . f Ext'l Amb. Temp.(prior to sampling event)-: '- Ti*",--Gal.Purged-timer-- Gal- Purge-d-- ConductatrJe - Conductance ,, - RedoxPotential (Eh)- Tu6idity " RedoxPotential@h) . - GROT'ND WATBR and Sampling (if different) - plr -, , .., - Temwraurre - - Ti*":- Gal- Purged-fr*"t- Gal. Purged- r-anrtrotnnn€Conductance - 3Z p TemPeraturB - Redox Potentiat (Eh) pH- RedoxPotential (Eh) T I t I t t I I \-, r,-tu / (lcq) I I l: I I I I I I I ir lr lr lr lr lr lr l: volume of lffaterPurged whenFietdParameters areMeasured -. PumpinF Rate Calculatiog FlowRab(Q), ingPm.Time to evacuate two casing votuqes (2V) T =ZYIQ= Number of casing volumesevacuated (if other than If welt evacuaBd to dqmess, nurnber of gallons evacuated -' - Name of Certified Analytical Laboratory if OtherThan Energy Labt Mill - Groundwater Discharge Permit Grouudwaer lVlonitoring Quality Assurance Plao (QAP) Dare: 11.17.06 Revision: I Page4l of41 b*i.,k { {l/tu 3z Tvpeof SamDle Sar+ple Taken (Girdp) SiiqiJeVo.lupn(lnffcateif other 'thnfo as gpeeifid HltEf-ed (circle) PrsseTlrtivc Sddod (cirels) {ffrFo YN 3x40ml YNt IJC,. YN YN 1@El YN rl"so. Y NNutrlEtrts FleawMetals YN 250fri YN HN(JI r All Other Non- Radioloeics YN 250mI YN NoPreservative Added GrossAlpha YN l.mml YN t{"SO. Y N O&er(epecify)YN Saoplevolume YN If apresenrative is ussq SpecfiTYpeand Quadity of Preservative: I I I t I I I I I I t I Milt - Groundwater Discharge Peemit Grourdwater Monitoring QualitY Assurance Plan (QAP) Dael: 2.25.ff7 Revision: 2 Page40of4l ' aT'!ra@@t{rt WEf,mE-nreSA {rBAN[[lM MI['L FIEI,D OAta ]floFxsgeur FpR cRo-uB[D WAI'ER Description of SamplingEvent: A ha {')+a*t'a-'laa-++^AuarerSampler A . DateandTimeforPnrging lfzl/ot *asampling(ifdiffereno' - Well PurErnE EquiP Used:6u*nor-bailer well Purnp (if other than BenneOJ'ED- hev. welt sampled in sampling Bvent- gffutrer?.0 ?-o * PHBuffera'0 '10 - Specific Conduc*""-? { f-t'tv*rOyt*WellDepttr - Depth to WaterBeture Pr'ging- Casing Volume *rf #ir-,!*iil' Condueunce(avg). ,-. - pllofWnter(avg)< Redox Potential (Eh)-TurbiditY - Tfelt 1tiater TemP. (avg)- WeatherCond Exf I Amb' Temp'(prior to samPling event)- firo,-"--Gal-Purged-fime: ,... Gal.Prnged------ fl^rrlrrnflncE conductatrae - - nsdoxPotentiat (Blt) p Temperature... -Redox Potential (Ht),- : I I t I t I t fi*",-Gal- Purged-Ti*"1-Gat. PurEPd- Conductaflce -:Conductance . RedoxPotential (Eh) pH..- Temperattre , -RedoxPotential (Eh) D*p\ ,eolc Df AN Y7 LJ; I T I I I I T I I I I I I I iwtl-GmuadumterDisc.hargePerait Date: tt.i7.06 Revision: I 6roundvmErMoaitoring Quality As$lraf,ce Platr (QAP)PaeB'4lof 41 rfriairy 41 . VolumeofWaterPurgedMd -------_ Puqping Rafe Calculdion FlowBafe(CI, ingpm.Time 3o evacua[e two casirg votumes (2V} SfiA= ="33 T --?VlQ= Number of casing volumes evacuared (if o&er than two) -----:- .- If well evacuated to &1moss, uumber of gallons evacuated .,, . r.ntm /)ttt $e:r "/ fods-S.*x svgNameofceftifiodAnalyticallaboratoryifoiherThsnBaerwLabs?rtt ,ior "t -vs.s: , Gi* .-.as,r fi1-a.llTra:J I I I I I TveeofSqFEle $ffilule Taken (circ!e) SprinileVqlume(tudcato-ifotrer fftered (cirsle) F,g.f€grafiveAdtilPd (ekcle) lhiiii ar smclficdffi;ffi- VOCE g)N 3x40ml YN6.ECr- & N Nuuiens &N I0Oml Y fiSo" ry N Hiaw&Gtals WN 250ilI IlD N HNOI N Alt Other Non- Rndiolocics UN 25Oml 0PN Nohesef,vative Addcd CrmssAIPha UN 1.m0ul VN H,SOI (f) N VN Sampldvohrme Y& E apreservative is used, Specify"ype and Quantity of Ppeservatve: I I I I I I I t Mill - Groundwater Discharge Permit Groundwater Monitoring QualitY Assurance Plan (QAP} Date 2.25.a7 Revision: 2 Page 40 of4l *r*ffiry1ry--, FIELI, Uaca wonxslrprr roB GROIIN? wArER Deseription of SamplingEvent: 2^* (. ''c'rjsz:-:L't,"'""r1ulr't" Location(wellnarne) rrrt\r,I T5 . ff#Lu'itials -t''^n"lL'li''i", , Fd,.''- Ptl-" 6rrutrer7'o . .. 7 () - Specific Conductance. tlfJ-utvtrlOS/cm Depth to t#ater Before Purging.--t0!'c1-- Daeandrimeforpurging L/rt./ob , ndsampring(ifdifferent) - lyelt purging Equip Used: fpump or -bailer \Mell Pump (if other than Bennetil-f-ED- Sampling Evert$rrrr4le.I,r Prev. Well Sampled in $amPlingEvent- pHBuffer4.O .' Ll'0 Wetl Deptrr la1(-:5 casins volume (D a' $rell"-49-61-(,6-!3h) 3" lVeil: ('367h) conduetrnce (avg), - pH of water (av9)' ' -Wep ltratcrTemp .(a,tg) RedoxPotential (Eh)----lurbidity Tiraer-Gal'Purged-Tir*-- Gal. Purged--_-- Conductance. " - 'Conductance - Redox Potentiat (Eh)-----Redox Potential (Eh) ' Turbidity- - TurbiditY I I I I I I I I I t Tffnpcrahlre - p*l ,,, -Temperature ' - Ttm'"'--Gal'Purged-il__Gal.Purged Conductance -Con&rctanc,e - tlr pH .. Redox Potentiat (Eh) TemporaturB Redox Potential (Eh)-.- I I D*p\icrlc .f A\AJ b I I I I I I I I I I I t I I I I I Mill-GrouudlvaterDischargePermit Dsts 7L'17'86 Reviuioru I Grouudwater Monimring Quality AsstuanPe Plaa (QAP)Page4.Laf4l VolumeofWaterPurgedWhenFieldParametersuruMea'u'ed }tC Pumpine Rate CatPulation Flow Rate (Q)' in gPm' 5/60= =----'fr Time to evacuate two casing volurnes (2V) T=ZYIQ= la.E Numberof casing volumes avacuated (if othsrthau If well evacuafed to dryness, uumbor of gallons ovacuatd ' - Name of Cetifred Analytical Laboratory if Ottrer Than Energy Labs' SirihiileVolume 6Ui[Fteif-other'trliii +s-pnecfffed Eiltoreil (circle) -gsrygseA$gs0(ciTde)-rcg8$cse Samule T.atsen(cirdel YN)HCL ir\ N VOCs Y) N lmml t8)HfiO; ITL N IINO. {Y\ N2N Hiawlvtretals IY) N 250ifuI Y) N 250ml [DN NoPreserrrative AddedAtt other Non- Radioloeic$ g)N 9N H,SO- rn N CrossAlPla t/N Y(}0 If a preservative ir used' Spec$TyPeaod Quantity of Pr,eseryEtive: Other (specifii)UN Samplevoume "lL\ bo.,^ t I I t I T I I I I I I I I I I Mill - Groundwater Dischargs Permit Groundwater Monitoring QualitY Assurance PIan (QAP) ( Date: 2-25 37 Revision: 2 Page 40 of4l ATTACIIMEI\TT 1 WTIITE MESA TJRANTUM MILL FIELD DATA WORI(SHEETFOR GROUND WATER Description of SamplingEvefi: ilW.?|. Utr q:,xv\rl,-t*u! "Sampler \ Locarion (wen name) n4 4-i1 * #d;. initials P'{a^. l)+{,- r A/ . Date and Time forPurging Lt .r4 ofr pnd Sampling (if different)., -...., . . WellpurgingEquipUsed: 6*por-bailer WellPump(ifotherthan n**O 0el) h/i"*-'t' SamplingEvenq Prev. Well Sampled in SamplingEvent- Ll,o pHBuffer7.0 pII Buffer 4.0 specificconduc t^".4,4'l{ ,rt* st.* wettoeplo . 11 K *7- - Depth to water Berore purgi "e-Wlb- casing volume ,"1fl#f,,'Jt*,:[|li, Conductance(ave) SyS\ pHofWater(avet.6'7L/ Wett Water Temp. Gveilg,-Ol-RsdoxPotential(Eh)f,laTurbidity " I I Weather Cond'. "/ l?- Ext'l Amb. Temp.(priorto samplingevent) I aa; Conductance 3 .3 5O Conductance .i-.8'( 3 * RedorPotential(shi-lg-Y.- RedoxPotential rBr,l $ t-3 -. LI-T" 'tb TurbiditY. ( pH ..,6:.1:t- r rrwifrgg-Gal. Purged-13:-3- Conductance 3 ff80 PH .i\6- [-st{ - temperature . Lt{ '65 - d Gal. Pwged-*L1,3- conduetance 5 8t J- r@ Redox Potentiar (rrrl 51 3 I I 1i"na;,t;y "Jv fl,*lr;"t;5 .s)t _j: I I I I I I I I I I I t I I I I Mitl - Groundwaer Discharge Permit GroundwaEr lMonitoring Qualig .{ssurance Plan (QAP) Date: llJ7.A6 Revisioa: I Page{l af4l Volumeof Waterttrrged PumpinE RALe Calculation Ftow Rate (Q), in gpm. Time to evae.ldltftyl.ggsing volumes (2V) 5160= = .--.33 - T=2VIQ= ,,3*,r,,t;,- -,, Number of casing volurnes evacuated (if other than two) *1*.-"- Ifwellevacuatedtodryness,numberofgallonsevacuaterl -Nase of Certified Analytical Labotatory if Other Than EneryyLabs At t r+ Tvne of.SqPqDlP Samqle Takgn (circle) $amdgVoluqp (tnffesteifodher IliItered (circle) Preservative Adiled (cir.cle) thdri ae snecifled belorr) VOCs YN 3x40ml YN,HCI. Y N Nutriens YN lmml YN H'SO, Y N HriawMetalg tilN 25Otnt tilN IINO, {V N Atl Other Non- Radioloeics YN 250mI YN No heservative Added GmssAIPha YN 1-0008I YN H-SO, Y N Other(spsc8)YN Samplevolume YN B a prescrvative is used, Spec$Typeand Quantl[y of Preservative: I I I t I I I I I I T I I t I Mill - Groundwater Discharge Permit Oroundwater Monitoring QualitY Assurance Plan (QAP) ATTACHMEIETl WIIITD MESA URANIUM MILL ! Date: 2.25.07 Revision: 2 Page{S of4l FIELD DATA WORKSHEET FOR GROT]ND WATER Descriptionof SamplingEvent: lllfeiL ha-:rwib"t*'q.d " '" Sampler Location (well namd-fl {&[ JaurPlEr \ A a Narne and initials E.l,..^r {]Jv,v. r {L-f - Date and Time for Purging \ .lq }fr-andsampling(if different). - weII purging Equip used: Gu*por _bailer woll Pump (if other than e*nn,t\ {f...- lL/, Prev. Well SamPled in Sampling Eveilt f4l t'!*3 2 pH Buffer 7-0 f-o pH Buffer4.Q ,4"o specific conductm,nl,4! X *'*t*tosrcm w"u p"pth ' l2l J€ -Depth to wator Before poreine--JL51- casing volume t"lf #;'lj:______-,:H"l' Conductance (avg)- WeatherCond, WellWaterTemp,(avg)-RedoxPolential(Eh}---Turbidity- Ext'l Amb. Temp.(prior to sampling even |Jt -:- conductance pa y. 10- p r( 4sTemperature , tL Redor Potentia r ff-W2 *-L- "st Redox Potcntial (Eh)- Ii . . .' t T T I I I I Time:- Gal- Purged-Time:-Gal- Purged Conductance Conductance rempr,.we--W - TemPerature' - -eRedoxPotential(F-h) -{- .. RedoxPotential(Eh)(,; *fir1";,ug a^*;s;g z*Aiaty-::5 Volumeof WaterPruged Mill-CroundumterDischargePermit Date: 1t'17'06 Revision: I CroundwaterMoaitodng QuatitY Assurance Plan (QAP) Pumoine BqF Caleulation FlowRate(Q)' iugpm' 5/60= * P/k - Page4l of41 Time to evacuate [wo casing volumes (2V) T=?V/Q= fitA '' If well evacuated to dqrness, nurnber of gallons evacuated -- - Number of casing volumes evacuated (if other than two)' p /-A - Nameof Certified AnalyticalLaboratoryif OtherThanEnergy l,abs "l . Sa; 4-Q!--'i**, t.us. ,/ slr;{ /:: n{a S ";r /v<rLr-I fir+of S,amolq Samole Taken (circle) $amrleVolume (lnilicste ifoths $iltered (circlel Frcs6rsativehdig! (c{rcle) thdn as snecifretl helow) Y /NI HCI, qE/ NVOCs ')N 3x4OmlY.N f00ml YN U"SO, Y N' ZN 250hl N ItriIOr )N HEeVy $tl;lilrD ,YN NoPrcseruative AddedAll O&er Non- Radioloeics YN 250mI I-000mI YN H"SO,YN Groes AlPha YN Other(specify)YN Samplevolume YN lfa prasorvative is use{ SpcifyTYpeand Quantity of Preservative: I I I I I I I I I I Mill - Groundwater Discharge Pemit Oroundwater Monitoring QualitY Assurance PIan (QAP) ATTACH&pNT I WHITE MNSA URANruM MILL Date: 2.25.A7 Revision: 2 Page 40 of4l FIELD DATA WORKSHEET FOR GROUND WATER Description of SamplingEve*, l4feil {.-lolll,sg,tL'o:*tL ' Sampler tocation(welt namE) lShJ 52- Nameandinitials' DaE and Time fot*wgn.g -q ' 2q' 0 8 and Sampling (if different) '/ wrrll Prrmnfif otherthangennet) &FAl>'WellPurgingEquipUsed: lfu*p or-bailer WellPump (if othertha SamPlingEvent Prev. Well Sampled in Sampling Ev eat--14 /N-!' I Specific conductwneltl|"t-rfivfrIosrum wellDepth'' l'32' f: WeatherCond.--ts rtL Deprh to water Before pureins-7:-r+- casine Volume t"lf #;|:g*ffi'# Conductance(ave)- pHofWater(avc)7 Well WaterTemp. (avg)- Redox Potential (Eh)-Ttxbidity -Ert'l Amb. Temp"(prior to sampling evenr\--lZ-'L- (, I I I I I I I t T c Cut.Purged 5 -3- conducwrce 3?4/ I T"mp"r^r*" - 1,3''l-7 - Gal. conductance .1 Kll RedoxPotential fenl 9?0 il -T"*peraturt /6-'3d . Redox Potentia t gn> -J 1A RedoxPotential(Eh) 2L3 - t,*iaW qfr co,.duct,nce 3diL7 pa q.TL ^ to*p"on." 1I *".k RedoxPotenti"f feh)-, 2 ?t-(i *f*al;t:y -33' I '11'ol';;9 il; '7 I T: I I I I I I I I Mill - Groundwabr Discharge Permit Crroundwater Monitoring QualilY Assurance ?lan (QAP) Date. 11.17.06 Revision: I Page4l of4l VolumeofWaterPurged d "37'h ' PumpinF Rate Calcrdation FlowRate(Q),ingpru 2 - l'metoeva sl60= = , )5 T=2vlQ= Numberofcasingvolumesevacuated(ifother f,ua.twd I' / e V -ff urell evacuated to drrllesq number of gallons erracuated ., . -'::--:*- Namsof certifiedAnalytical Laboratory if otherfilanEnergy Labs N t fl - ?ime to evacuate two casing vol I I I t I I I I I l}pe-q8Sslnde $ap& TakE (cirtle) SamnlqYglu-me finffcarelf otfteE IUtere{ (ci$Ie) Presenrative Added (eir.cle! thdilas-sFg-iffqd helowl YN 3x40tnl YN HCL YN YL'I-$ftSOa Y- NNutientsYNl0OmlYI\ ffiwMeals g)N 250hl nN rII\IO IIU N Atl other Non- Radioloeics YN 250mI YN No Preservative Added Gros$AIPha {YN 1.000 ml q)N H'SO, fYJ N Other(sPec$)YN Samplevolume YN If a preservatirte is used, SpecifyTypc and Quaility of Preservative: I I t I I I I I Mill - Groundwatsr Discharge Permit Groundwater Monitoring QualitY Assurance Ptan (QAP) AETACHftpNSJ WIilTE MESA I'RAMIIM MILL t Date; 2.25-M Eevision: 2 Page'10 of 4l FIELD DATA W0RKSTIEET rgR cRgUND WATERFIELD DATA WOBKSHELI rt',,f, t'ravunv I Descriptionof SamplingE'"ot' flf'etl (""o:'jav:d'^'""y - - - Samplersamprer \ "^' {)ol'*' &' Location (wellname) {vlN . b I - Name and initials-K1 Date andTime forpurging l.t-. l 4 Ofr *aSanrpling (ifdifferent) - RedoxPotential(Eh)--Surtidity'' Well Purging Equip Used: -pump or -bailer Well PumP (if other than Beme[-'l#-. Sampling Eventge4-Jzt ,-fr- Prev. well sampled'u. sampline}rvefifrJl&t pHBuffer ?.0 $rBufferao ' ?: O- 4lll { ,or src* wettDePth " y't+ -Specific Conductanc€J- Deprrr ro warerBefore pwsins,- ! L -casing volume %rffit:-!fifl}' Conductance(avg)- lYell Vfatcr TemP. (avg)------:- Timet.- Gal' Purged n*"t-Gal'Purged- undacrance {/)- L Conductance -ps fi.a-|-* PH Redox Potenti at tFjt ) -2, L.L- t*itity l. 32. - I I I t I T I I I t .,. Redox Potetrtial (Eh) . - Turbidity l -o Ti*tt-Gal- Purged Ti*",- Gal' Purged- ConductanceConductance Redox Potential (Eh)-.---_--.-- ptl -- Redox Potential (Eh)- --i-^*!;Jg ( .' I I *f*rli,u5 b r. Bt c^,-ll- Mill - Groundwater Discharge Permit Groundwater Monitoring QualitY Assurance Plan (QAP) Date: 11.17.05 Revisioru I Page4l of47 ru*iaty *---1-* - ?u6idity Volumeof WaterPurged Pumping R4te Calculation FlowRate (Q)' in gpm' 5160= = .F/4 Number of casing volumes evacuate'd (if other than two)' -i- ' - If well evacuated to dqmess, number of gallons evacuated ----=- -- -----\--\, - . rA Name of Certified AnalyticalLaborat'0ry if OtherpanEnerry Time to evacuate two casing volumes (2Y) T=2VlQ=/\, t*T,/*-A/1*4 5a Filtered (circle) Fesertitive fuiltled (circle)Tvpc of S$mule Sa+pple Ta.kgn (circle) Sar.npleYqlume (indlcate tf other thili sq.sDecifieal helow) r0 t*YN 3x40 ml Y HCL @N Yut-s lmmI \.N H"SO. Y N N ffiPtiawMEats2N25OmlYNNsPreservative AddedAll Other Non- Itadiolosics YN 25Oml bN rl*qo, (n) N Oros.s AIPEa-{*N l.{trt mt If a preservative is used, Specify TlPe and Quantity of Preservative: Samplevolume YN Other (sPecifY)YN \.r tsC,,-l( Well Purging Equip Used: 6"*Oor -bailer Well Pump (if other &an Bennet) Conductance (avg) ' - I I I I I I I I Ir lr lr l: lr Mill - Groundwater Discharge Permit Groundwater Monitoring QualitY Assurance Plan (QAP) Date and Time for Purging '/ ' '{- ' u t/ Date'- 2.25 37 Revision: 2 Page40 af4l Lt 24 0 j-ano Sampling (if different) AITACHMETT I --- - WTUTB NNTSA URAMT'M MILL flELD pai+ wonrsffiEr FoR GRoUND wATER Deseripionofsampling'Bvent' flP'"1 i.ror Locarion(*"ttoum"). -h4Js}i-- ffi['J[tinitiak Ptla^' ' P+["s'r t-fl' SamplingEveni Prev- well sampled in sampling Ev e*Jkal!1 plrButrerT-o J"O .- PHBuffer4'o .tf, o sp""ifi" Conauctance4{1 L -u*fttoslcm W"lt D"pth ( 3 I "''f Depth to Water Before Purging - - "Casing Volume (V) 4" Well: !653h) 3" 1Veil: ('367h) pH oflVater( Redox Potential (Eh)-IurbiditY Well Water Ternp- (avg)- WeatherCond Ext'l Amb, Temp.(prior to sampling event)- tt '. .' ifr"-r-Gal' Purged-titn",- Gal' Purged * Conductance ,, - - Conductance . : Redox Potential (Eh) - , -. -, TurbiditY pH-,,- Temperature :TemFsrature --- RedoxPotentiat (Bh).- TurbiditY * Tt*"'.-6a1' Purged-T*"'-Gal.Purged ' -Conductance . Conductance . - pH.= TemPerature - RedoxPotential (Eh) - pH' TemPerature Redox Potential (Eh)- 1i^tb',,t,4 Nor,;*(';fvt* 3z *il'*\;s;9 (; }*f/;*t, I 1,, I I I I tl lr l: lr Mill-GroundwaterDischargePermit Date: 1['17'06 Revision: I Groundwater ivlonitoring Quality Assurance Plan (QAP)Paw4laf 4l r*mv--::-F Volumeof WaterPurged Pumpine Rate Calculation Tirne to evacuate two casing votumes (2Y) t=ZVlQ=. I ' Number of casing volumes evacuated (if other than two ff well evacuated to dryness, number of gallons evacuatcd -- ' NameofCertifiedAnalyticalLaboratoryifotherThan Eneryy;,abs 1- f iltered (ci!gle) frysegyead&g(circle) -fsEe-sf$aEspls Sample Takgn (circle) Sgmdp-YPJume (ig$icgfe.lt-other thriri as suecifted below) H(x- -Y NYN3x40 ml YN YN 100m!YN rLSb,- Y N /9N 25Otnl /4il N lS[O, e/ ]t\I IliawMetals NoPieservative AddedAtt Other Non- u-Ainlaainc YN 25Oml I H,so. fU-Etlr N 1.000ml IY) N lJfuutt atrPs4 YN Samplevolume YN ffapreservative is use{ SpeciffTYPe and Quantity of Praservative: Other(specffi) I I I I I T t I t I I T I T T t I I T Mill - Groundwater Dirscharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) Date: 2.25.07 Revision: 2 , PasefiAot{l . A?0? ' a?TACIIII{ENTI WMTEMESA UNANTTIMMILL FIELD DATA WORKSHEET TOR GROT'ND WATER Description of SamPling Event; WettPurgingEquipUsed 6r*or-bailer..Well Pump(if otherttran gr*rl tb\-Dr-f;*/ SamplingEvent Prev. Well Sampled in SamplingEvent 4* pHgutr"ra.o ., ,' ' ?dpHBufferT.Q Redox Potcnti at (Eb)31.1- (-' t:j ) ,-'L specificconducrance-!furMlllostem watrr;pu , - l?fr. V Depttr io l8ater Before PweiW-U{ J-* Casing Votume (V} 4" Wen: lL . 0,f, <{ff!} conductance(a"el .,<6 LIT* puorfirdter ,O1 Yl"f-WL Vfetl Water Temp. turei-l-[-f-Redox Potentiar grrfS4ru *iaty . 6 7 WeatherCond {'', 5, \ Ext'l Ar$.Temp.(priortosamplingeverg=-{"c'-:- lba "/ r.nnr{rrr:tsnce 36LlL coour"*r. .3 4 ff - p rempetature ll.Lf -2-Turbidity . )o .-_- Turbidity .72 pn L,?l , - ""**roo* ' ,.;:, RedoxPotentiaWEh)-<?4- RedoxPotentialph) J.f.S - il**.73 , N{ T I I I I I I T I I t I I T I T I I I Mll-GrourdwaterDischargePermit Date: 11.t7.06 Revision: I OroundwaerMonitoring Quality Assurauce Plar (QAP)Page4l of4l . Y".qlPqg of Wab:PurgPd When 96- PumPing Rate Calculation ., FlowRate,(p,ioPr. . l,--. fime to emcuate two casipg volumes (2V) iioo=' '-= .'* " 3.f_ '-f,=2tde=4 ? *t^r Numbel of casing volumes evacuated (if other than awo)-' n lh Ewell evacuated to dr;mesq number of gallons evacua(ed. r'r'f ra Name of Certified Analitiial l-aboratory if OtherThan EaerryLabs .N7 A - - I TVne ofSamnle . $atrrrle Tikeng$t Sample.YqLpmp findcatelfo&er HItercd (g!rtte) Prmerrative Added (ciqcle)'$-lri.+q.Hpedfrd helow) voch YN 3x40 ml YN,HCX. Y N Nutrients YN l0Oml Y"N H"SO, Y N Edrwiltetals..IY) N.250hI ')N m{Oi, ,:. fr NAll OtItEr Non- Radiolosics .Y N 250mI YN No Rreeervatitp Added GmssAloha YN *.0mmD YN H,SO, Y N Other (speci$)YN $i{irplevolume rN Eapreservative is use{ Speci$Typeand Qnnlity of fteservative: Comments /,/,,,*- I t I I I t t T I I I I I I I I t t I Mill - Groundwater Discharge Permit Groundwater Monitoring Quatity Assurance PIan (QAP) Date: 2.25.a7 Revision: 2 Page4Aof 4l oq30 .^r. P,.l'nn<'/ a?racEq@.Nr I WHITE MESA TIRAhIITJM MILL FIELD DATA WORI(,SHEET FOR GRO{.IND WATER DescriptionofSamplingEventt A*V.-C,'#"'J.r - r,ocation(wettname) fi4 Uf ..e b * ffi:lllainitialsf*s Dar and Time for Purging S/ itl f a* and Sampling (if different) ., . 'I Well Purging Eguip Used: 6u*p or -bailer \Iletl Pump (if other than Bennet) c-s&--Jd;Jti Prev. Well Sampled in SamplingEvent/WSampling Event pnfufferT.0 7.0 PHBuffer4.O SpecificConductance qq7--uMHOS/cm WellDepth, d/A.- Depth to WaterBefore Purging.*3g.Sg}- Casing Votumc (V) 4' Well:--(.653h) condue6nce (ave) -, N/i\ ppofWaterOr,rrl'Jil"--, t* Well WaterTemp. Gve)-dA- Redox Potential (Eh)d&rTu rbidiy Nlk WeatherCond Ext'l Amb. Temp.(prior to sampling event)-!I.' t- fir*, i!Z-t-Gal. Purged-dlt-- conducauce 32Oq pH G.ll -- remperature 11''1Ll Redox Potential (ED-238 - (. ' ''{.o Tirns:-Gal. Purged- RedoxPotential (Eh)-i ..[ .a I t I I T I I I I I T T t T I t I I T Mll - Gmrmrlwater Dfucharge Permit Groundwater Moaitoring Qudity Assurarce PIar (QAP) Turbidity .. **_----] Date: 11.17.05 Revieion: I Pap4l of 4L Tutbidity,., - ' . Volumeof WaterPurged WheaFieldParameters are Measured .- ^\ BumpinF Ratq Calctrlation FlowRate (Q), inEpm.Timeto svacuate two ea$iqg volumes (2V)5160= =T=}Y|Q= ------ Numberof casing volumesevacuated(if otherthan two) f- _ If well evacuated to dryress, number of gallom evacuetcd - -T- _ O( -{,0 Tvneof$amde Samnle Takcn (cit'stq $riprile Volrme (lndleateito&er Filtsred (cirde)Preserv$Fve Added (ctude) voch tr)N 3x40 ml YN HCX" Y N Nutriertt YN l{X}ml YN HrSO. Y N HdawMetals FT) N 250ilt Y ,NI IINO. ,..Y NAII Other Non- Radioloqice YN 25Onl YN Noheservative Add6d GrossAlohe YN I,000 ml YN H,SO, Y N Other(spec$)YN Samplevolume YN Eaprcsenrative is used, SpecifyTypeand Quantity of Prcservative: I t I I I I I I t I t I t T t t I I I Milt - Grormdwater Discharge Permit Gmundwater Monitoring Qualily Assurance Plan (QAP) DescriPtion of SamPling Date: 2.25.A7 Revision: 2 Page 40 of4l AJUIACHMENT I WIIITE MESA IJRANIT]M MILL FIELD DATA WORKSIMET FOR 'fa;ai;r.//^t"1,,,? * 4*^ p*tr,*n WelPurgingEquipUse& yf,umpor-Uailer WellPump(ifother *ur*rnn 0 h*^fe/r;*"( Sampling . Well Sampled in Sampling g**-tyl&!.- 2{ pH.rivtrer'lfi-, 7.6 - PHBuffer4.O #o WettPepur .132, f - Casing Volume (VJ-4s{Iell;3 Sl*ftS3tr} 3'Wetl:-__---(.367h) pllof-Water(avg).- t.31 .- Redox Potsrtial (ED36olturtidity 10.74 Date and Ti.ryrg-for Purging SJ f ' d8tnd Sampting (if different) Specifi c Conduc t*r"ll!-rMnlOS t "* Depth to lVater Bofore Purging-L?=-Hl Conducunce( *el fl151 WelI Iffater TemP. (avgil5..]l- Fnnrlrrrrenne 3176 undrrctnc. 3 ?T,L px c.,SA - Temperature / {. )(4 - Turbidity ro. t RedoxPotentiat(Eq 5- RedoxPotential @nl 26,,V t*uiairy .- 1/' f conductance . ,3 ?o3 cotrdrrct,u,"n 577 3 -pH,,,,,,4.,- $-:{::, :, rr*p"o* i"I.{f' ' -' . , Redox Ptttential (Eb)(.*jilser ,.: ., fa Ee I I I t I I I I I I I I I I I t I I I Mill - Crrouadwater Discharge Permit CroundwafeMonitoring Qrality Assurance Plas (QAB Date: 1i.17.06 Reviaion: I Page4I of4l Volumeof WaferP,ug"a Pun-roi4g RIfp Calculation FlgrR.ate(Q); inspm..33 Time to evacuatetwo casi4g volumes (2V) -+-T:ZV!Q= _?ttrilt _' rti* mirmU"rofcasi4gvolumesevaeua.hd(ifo&prlhan wri . lr' 2' Q{" * If well evacuated to dr5mess, numberof gallonsevacuarc.d--<f Name of CertifiedAnalytical f,atoratory if OtherThan PrergyLabs a*# 2,ta1a 5/60= Tvneof $nmnle Samnle Taken (cirrcle) $.rimdleVohme(ftrdieate if o,t[er Elltsttd (circle) Prcservative Added (etfde)'thIii ae spedfied helrrwl voG YN 3x40ml YN5 HCX, Y N NuEients YN 100ml YN E+Sgr Y N Hr*rwlVtretals VN 250ht Y:.i 19.Ht'[O. ". Y NAtl Othgr Non- Rediolocics YN 250mI Y.N GmssAlpha UN l.mmI YN H,SO. Y N O&er (specify)YN S.a4-plavolume YN N,' a t;:' Ba prcservative is uce4 Specify Type and Quxntity of Preservative: I I I I I t I I I I I I t I t T I I T Mill - Grouadwaer Discharge Permit Groundwater Monitoring QualitY Assurance Plan (QAP) IIELDDATA Df,te: 2-25.U1 Revision: 2 Page'f0 of 4l ATTACHMENT 1 GROTTND WASER DescriptionofSamplingEvent: [n&/ lgy"+dt4dlut - Locarion(weuname) Y.lt r L- , .. i,HJhi, ia*rfr'^'n lJ' Qu/* P. DateandTime forPurging .S. /9: OB and Sampling(if different)- Yiretl Purging Equip Used; -.-pump or -bailer Well Pump (if other than Bennet) sarnpting Eve "t fflr"fLg krr,^.b,t Prev. well sampled in sampling Event- prir,vtr*l.o J "o- - pHBuffer4.o '7' d- Specific Condnctznce$.?J-_u\v13l}Stcm Wett Oepttr .. . -* ' Depth to lMater Before Purging-"- casing volume ,"rf #it::-_,:[;ll) Conduc&tnce WellWaterTemp.(avg)- RedoxPotential(Eh)---SrbiditY Weather Cond. l' Ext'l Amb. Ternp'(prior to samplingevem)-------:'- Em"t-Gal. Pqrged-Time: , .. Gal. Purged--*---.-* f-nndrrcflnneConductance- Tempemture - RedoxPotential (Eh)- Turbidity , - --.* plloflVater(avg)- Redox Potential (Eh)- Turbidity - - WTIITE MESA TIRAFIIT'M MlLt Time:- Gal. Purged- conductance - RedoxPotential (Eh). Time:- GaI. Purged Conductance - PH-, .- ' I .' : Temperature - Redox Potential (Eh)-t,; b*T $L..k- .( tv-,v) 3 2 I I I I I I I t I I I I I I I I I I I Mll - Gmrdwater Discharge Pumit Croundwa@Monitoring Quality Assrrarce Plan (QAP) Date: LL.L1.M Revisioa: I Page(lof4l Turbidtty Timeto evasuste two casiqg volumes (2V) T=2VIQ= "- Number of casing volumes evacuated (if othor than two). If urell evacuadd 60 drlmess, aomber of gallons errasuated ... u - Name of Certified Analyticat Laboratory if Otlrer Than Energy Iabq VolurneofWaterPurgedWhenFieldParametersarcMeasured',,. . ... Pumpins Ra[s Calcula$gn FlourRaie (Q), inepm" TweofSa$Ple S,pple Tpken(cfqgh) SslfiileVolune findicatcif ofter Eilte,ro{ (cirele)P,repsrvrtive-Sddcd fptTple) YOCs YN 3x40ml YN HCI. Y N Nutienb YN 100ml YN II'S0. (YJ N HiawMetals DN 250ihl fIN IINO,YN Atl Otlrer Nou- Radiolosics YN 250mI YN No Prrescrvative Added GroesAlphe rJN 1.000m!YN H,SO. qP N Other (speci$)YN Samplevolume YN If a preservative is use4 SpecifyTypeand Quantity of Preservative: I I I I I I I I I I I T I I I I I I Mill - Groundwater Discharge Permit Groundwater Monitoring QualitY Assurance Plan (QAP) ATTACHMEM 1 rIELD DATA rOR GROT]ND WATER Weil WarerTemp. (avg)---I- RedoxPotential (EhD=-Turbidity . - TtreatherCond Ext'l Arrb. TemP.(prior to sampling event)-----'::- Date: 2.25.07 Revision; 2 Page40of4l DescriptionofSamplingEvent: IYIllY, (A artnnu L,ocarion (welaa*et .fili 60 ffinJil,urtt*,k.n"*,,/ lt,tl;,!? t+* l*['^e r Darc andTimeforpurging 5: f3 'dLanO Sampling(if different) - Welt Purging Equip Used: --pump or -bailer Wbll Pump (if other than Bennet)- SamplingEven , hrZo,)*l^4' \ Prev. Well Sampled in SamptingEvent-:{4 pn,ovtr*,.o . 7.,O- p,Butur*o ' !l- 0 -Specificconductanse '?97-uMIIOS/cm WellDeqth . 4t / l+ -Depth m Water Before Purgi ng--e-/&--Casing Volumt *rf;N;1:=:fiff' (-' WHITE ME"SA URANIIJM A,fiLL remperature L Rcdox Pot nti* Gn)--U3-f-ItlTurbiditr a (, l Redox Potential (Eh)-t ' .1 I RcdoxPotentiat (Eh) . "'= -D l-. B(*-lt- Redox Potential (Eh) . I l: I I I I I I I I I I I I I I I I I Mll - Grormdwater Discharge Permit GrousdsnterMotritorhg Quality Assurarce PIEn (QAP) TurtiditY Date: 11.17.06 Revision: I Page4l of4l FtowRnte(Q), inePm' Volume of Water Purged When Field Pararneters are Mea$urEd . . , . t ftrrrping Rate Catsulation Time to evaflats h[g casirg vohrures (2Y) T=ZVIQ= a .- Number of casing volumes evacuated (if other than two) :* - If well evacuated to dr5mess, number of gallons evacuated "-- NameofCertifiedAnalyticalLaborctoryifodrerThanBnergyLabsJAf-lm.,sn, fr*at;*'Lf S/0= = ).-r - 13tr,^lc ffiirativeAdded (clT,cle)geeggsUs Samule Taken {glrcte) SirhfleVqtumg finffgnteif o0ter terihaefqpd&$ belorr) f,'lltere.d (cird4 (DN 3x40ml ffi 0\r,/Bcx.- q__N VOCs ffi.-- YNYGpl00mIYN 4SEH:;". .WN 250iil 9,_&__fr_-o. $P S Iil ottrer Non-YM 8)N-r-E 25Oml YN lUo Preserv*ive Added Radiologlcs CrossAIPha 1-ffl0ml VN ffi--_-@_N SampldvolttuP YN If a praservative is use{ Spec$TWeaod QuantitY of Preservative: Otlrer(sPBctfY) ENERGY LABOBATOEIES, lNC. . 2393 Salt Creek HWway {82601) ' PO. Box 3258 , Caspa4, WY 82602 TotlFree8BB.235.05l5 . 307.,; $15 . Fax 307.234.1639 , casper@energylab.a wwwehergylab.com I t I LABO RATORY ANALYTICAL REPORT Client: Project: Lab lD: Glient Sample lD: Denison Mines (USA) Corp April Groundwater c08050104401 MW14 Report Date: Collectlon Date: DateReceivEd: Matrix: 06106108 04129i08 08;57 05/02l08 Aqueous Result Units Qualifiers RL MCUQCL Method Analysis Eate, By I I t t I T I t I I I I I I METALS. DISSOLVED Manganese Uranium E200.8 E200.8 10 0.3 2160 us/L61.8 ug/L ASEA$8 20:57 / ts 06/0310E 08:18 / sml Report RL - Analyte repo*ing limit. Deflnltions: eCL - euality control limit. MCL - Maxlmum contaminant lavel. ND - Not detected at the reporting limit. I T T ENEBGY LAAORATORIE1 INC. . 2393 Salt Creek Highway (82601) . PO. Box 3258 . Caspe4 WY 82602 TollFree881.235.05l5 . 307.. C5l5 , Fax 307.234.1639 , casper@energylab.q wwwenergytab.comt I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: ClientSample lD: Denison Mines (USA) Corp April Groundwater c08050104-002 MW26 Report Date: 06/06/08 Collection Date: 04/29/08 1 1 :23 DateReceived: A1fiZlOB Matrix: Aqueous t Analyses Result Units Qualiflers RL MCUqCL Method Analysis Date, By 10 0.3 ug/L ug/LI I I I I I I I I t I METALS. DISSOLVED Manganese Uranium VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chlorofom Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylones, Total Sur: 1,2-Dichlorobenzene-d4 Su n: Dibf omofl uoromethane Sun: pBromofluorobenzene Sun: ToluenM8 10f0 17.2 E200.8 E200.8 sw8260B SW826OB sw8260B sw8260B sw8260B sw8260B SW82608 sw82608 sw82608 sw8260B sw8200B SW8260B sw8260B sw8260B O5|2AA821:04 I ls 06/03/08 08:24 rsml 0511 3/08 01 :06 / dkh 051t3/08 01 106 / dkh 0511 3/08 01:06 / dkh 05/13108 01:46/dkh 05/13108 01:06 I dkh 05/1V08 01:06 / dkh 05113/08 01:06 / dkh 05113108 01:06 / dkh 05/13/08 01:06 / dkh 05/13/08 01:06 I dkh 05/13/08 01106 I dkh 05/1 3108 01:06 I dkh 05/1 3108 01 :06 / dkh 05/1 3/08 01 :06 / dkh ND ug/L ND ugr/t ND ug/L 1600 usll ND ug/L ND ug/L 47 ug/L ND ugll ND ugll ND ug/L 115 %REC 118 %REC99.0 o/oREC 95.0 %REC 20 1.0 1.0 50 1.0 20 1.0 1.0 1.0 1.0 80-120 70-r30 80-120 80-120 I I I Report RL - Analyte reporting limit. Definitions: eCL- euatity control limit. D - RL increasEd due to sample matrix interference* MCL - Maximum contaminant level. ND - Not detected at the reporting limit. I ENERGY LABofrAToBlEs, lNq: ' 2393 salt creek Hiqhway (s260/) , p.o. Box 3258 , caspq wy az60z lollFree880.235.05l5 ' 30zi '1515 . Fax 30zeg4./019 ,basperdenergytatci- www.eheigytab.Ai-I I I Glient: Project: Lab lD: Client Sample lD: LABORATORY ANALYTICAL REPO RT / Deniaon Mines (USA) Corp /AprilGroundwater /co8os0104-0os vMW32 Report Date: O6/06108 Collection Datez 04f29108 11:10 DateReceived: 0510?08 Matrix: Aqueous I Analyses Result Units Oualifiors RL MGUQCL Method Analysls Date I By I I T I I I I T T I T METALS. DISSOLVED Gadmium lron Manganese Nlckel RAOIONUCLIDES - DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (r) 3.00 9040 5500 61 3.4 0.6 ug/L ug/L ug/L uS/L 0.50 30 10 20 1.0 E200.8 E200.7 EZAO.7 E200.7 8900.1 E900.1 AsEZt0S 21:24 I ts 05nU08 t5:51 / cp 0520/08 15:51 /cp 05/2008 {5:51 / cp 05/23108 12:33 I crw 05l23lOB 12:33 I crw pCi/L pCi/L T I t Report Deflnitlons: RL. Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contamlnant level. ND - Not detected at the reporting limit. I ENEBGY LAEOBATORIES, lNC. ' 2393 Seft Creek Highway (82601) ' P.0. flox 3258 ' Caspe4 WY 82602 Toll Free 888.235.0515 . 307.( ,5/5 ' Fax 307.234./639 . casper@energylab.cl www.eoewab.com I I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD: Denison Mines (USA) CorP /AprilGroundwater /c08050104-004 y MW60 Report Date: 06/06/08 Gollection DatE O4l29lt08 14:45 DateReceived z o5l12lo8 Matrix: Aqueous I Analyses Result Units Qualifiers RL MGUQcL Method Analysis Date I By I I I I I I I I I I t METALS. DISSOLVED Manganese Uranium VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sirn: 1,z-DichlorobenzenB.d4 Surr: Dibromofluoromethane Sun; p-Bromofl uo robenzene Surr: Toluene-dB ND uglLND uglL 10 0.3 20 1.0 1.0 't.0 1.0 2A 1-0 1.0 1.0 1.0 80-120 7G130 8G120 80-120 E200.8 E200.8 sw8260B sw8260B sw8260B sw8260B SW8260B SW826OB SW82608 SW826OB sw8260B sw8260B sw8260B sw8260B sw82608 sw82608 05aUAB 21r31 /ls 06103/08 08:52 / sml 05/13/08 00:25 I dkh 05113/08 00:25 / dkh 05113/08 00:25 / dkh 05113108 00125 / dkh 05113/08 00:25 / dkh 05/t Y08 @:25 / dkh 05/13/08 00:25 / dkh 05/1 3108 00:25 / dkh 05/1 3/09 00:25 / dkh 05/13/08 00;25 / dkh 05/13/08 00:25 / dkh 05113/08 00;25 1 dkh 05/13O8 00:25 /dkh 05/1 3/08 00:2s / dkh ND ug/L ND ug/L ND ugl1. ND ugll- ND ug/L ND udL ND ug/L ND ug/L ND uglL ND uglL 'r 16 %REC ,19 YoREC 1OO %REC S5-0 o/oREC I I I Report Definilions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level, ND - Not detected at tha reporting limit. T ENEBGY LABORATORIES, lNC. .2393 Salt Creek Hiohway (52601) , P.O. Box 3250 . Caspil WY82602 Totl Free 888.235.0515 , 307.;' '1515 , Fax 307.234.1639 ,'cisper@enetgylab.a' wwwehergylab.com I I t LABORATORY ANALYTICAL REPORT Client: Project Lab lD: Client Sample lD: Denison Mines (USA) Corp April Groundwater c08050104-005 MW65 Report Date: 0S/06/08 Collectlon Date: 04f29148 1 1 : 1 0 DateReceived : A5l02fJB Matrix: Aqueous Result Unlts Qualifiers RL MCUOCL tllethod Anatysis Date I By 0.50 30 10 20 1,0 2.7A ug/L S290 uglL 5700 uglL 63 ugrl I I I METALS. DISSOLVED Cadmium lron Manganese Nickel RADIONUCLIDES - DISSOLVED Gross Alpha mlnus Rn & U Gross Alpha minus Rn & U Precision (t) E200.8 E200.7 E200.7 EaAO.7 E900.1 E900.1 05il22108 21:381ts 05120/08 15:57 I cp 0520108 15:57 / cp 05/20/08 16'.57 I cp 05123108 12133 / crw 05123108 1233 / cnu 3.7 pCUL 0.6 pCilLI T I I T I t t I t I I Report RL - Analyte repoding limit. Deflnltions: eCL - Ouatity control lirnit. MCL - Maxlrnum contaminant lavol. ND - Not detected at the reporting limit. I ENERGYLABORATOEIES.lNC..2SgSSaltCreekHiohway(8260il,PO.1ox32"58. CasparWY82602 TollFree888.235.05l5 . 302 0515 . Fax 307.234.1rt9 ,'cisper(itenergytab.Q wwueheigylab.cont I I LABORATORY ANALYTICAL REPORT Client: ProJect: Lab lD: Client Sample lD: Denison Mines (USA) Corp April Groundwater c08050104-006 Trip Blank ReportDate: 06/06108 Collection Date: 04129/08 14:45 DateReceived: 05/02/08 Matrir Aqueous I Analyses Result Units Qualifiers RL MCUACL Method Analysls Date, By I I I I I I I I I I t VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachlsdde Chloroform Chloromethane Mothyl othyl kotone Methylene chlorlde Naphthalene Toluene Xylenes, Total Surri 1,2-Dichlorobenzened4 Sutn Dibromofluoromethane Surr: pBromoffuorobeozene Surr: ToluenedS 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/LND ug/L 1A4 %REC 96.0 %ReC 102 o/oREC 99.0 %REC 20 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 SW82608 SW826OB sw8260B sw8260B SW826OB sw8260B sw82C0B sw8260B $w82608 sw8250B SW826OB sw8260B SW826OB 8W82608 05/09/08 17:09 / dkh 05/09/08 17:09 / dkh 05109/08 17:09 / dkh 05/03/08 17:09/dkh 05/09/08 17:09/dkh 05/09/08 17:09ldkh 05/09108 17:09/ dkh 05/0S/08 17:09ldkh 05/09/08 17:09 / dkh 05/09/08 17:09 / dkh 0s109/08 17:09/dkh 05/09/08 17:09/dkh 05/09i08 17:09/dkh 05/09/08 l7:os/dkh T I I Repod RL - Anatyte reporting limit. Definitions: eCL - euality control limit, MCL - Maximum contaminant level. ND - Not detected at the reporting limit. ENERGY LABOBATOHES, INC ' 2393 Salt Creek Highway (82601) ' PO. qox 3258 ' Caspet, WY 82602 To/tFree888.235.05/5 ' 307.: 15/5 ' Fax 302234.189 , casper@energylab.cq twwuenergyfab.com June 06,2008 Denison Mines (USA) Corp 6425 S Hwy 191 Blanding, UT 84511 Workorder No.: C08050104 Project Name: April Groundwater ANALYTICAL SUMMARY REPORT Quote tD: C1640 - POC Wells / Monthly Groundwater Sampling Energy Laboratories, lnc. received the foltowing 6 samples from Denison Mines (USA) Corp on 5ru2008 for analysis. Sample ID Glient Sarnple lD Collect Date Recelve Date Matrix Test C08050104-001 Iv[\ I14 A4nSn& 08:57 05102U08 Aqueous Metals by ICPIICPMS, Dissolved c08050104-002 MW26 04129108 1 1 :23 05102108 Aqueous Metals by ICP/ICPMS, Dissolved SW8260B VOCs, Standard List c08050104-003 MW32 A4l2glOB 1 1 :1O OSltJZlOB Aqueous Metals by ICP/ICPMS, Dissolved Gross Alpha minus Rn222 and Uranium c08050104-004 MW60 A4t2gng M:46 O$fiAAB Aqueous Metals by ICPIICPMS, Dissotved $W82608 VOCs, Standard List c08050104-005 MW65 O4n9fi811:10 05/02/08 Aqueous Metals by ICPIICPMS, Dissolved Gross Alpha minus Rn222 and Uranium I I I I I I I I I I t I T I T I I I I C08050104-006 Trip Blank M12910814:45 05102fi8 Aqueous SW8260B 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. ReportApproved By: N** & ,rilb^,b I ENERQY LABOBA1OHE9 lNC. ' 2393 Satt Creek Highway (82600. eO. Bax 32.58 , Casper; WYB2602 To/1 Free808.235.05/5 . 307t 05/5 , Fax 307.234.1639 . casper@eneryylab.e wwnenergylab.comI T I QA/QC Summary Report Glient Denison Mines (USA) CorP ProJect April Groundwater Repo*Date: 06/06/08 Work Order: C08050104 Analyte Result Unlts RL %REC Low Limit High Limat RPD RPDLimit Qual t t I t t t Method: 8204.7 Sample lD: MB-080520A lron Manganese Nickel Sample lDl LFB-080520A lron Manganese Nlckel SamplelD: C08050094-002FMS2 lron Manganese Nickel Sample lD: C08050094-002FMSD2 lron Manganese Nickel Method Blank ND mgll ND mgll ND mglL Laboratory Fortified Blank 1,07 mg/L 1.000 mg/L 1-00 mglL Sample Matrix Spike 2.23 mg/L 2.14 mglL 2.10 mg/L Sample Matrix Spike Duplicate 2.16 mg/L 2.05 mg/L 2-03 mg/L Run: ICP2-G-080520A Run: iCP2-C-080520A 85 125 85 125 85 125 Run: ICP2-C_080520A 70 130 7A 130 70 130 Run: ICP2-C-0805204 70 130 70 130 70 130 Batch: Rl01431 05/20/08 14:M 05X20108 14:38 05120/08 15:02 OSnOfi8 15:07 20 2A 20 0.00s 0.0003 0.004 0.030 0.010 0.050 0,030 0.010 0.050 0.030 0.010 0.050 147 100 100 109 103 103 106 98 100 3.1 4.3 3.3 I I I t I I I Method: E200.8 Sample lD; LRB Cadmium Sample lO: LFB Cadmium Sample lD: C08050'1fi{l02AMS4 Cadmium Sample lD: G08050104-002AMSD4 Cadmium Method Blank ND mg/L 1E-05 Laboratory Foffied Blank 0.0539 mg/L 0.0010 Post Digestion Spike 0.M86 mg/L 0.010 Post Digestion Spike Duplicate 0.0470 mgll 0.010 Run: |CPMS24-08A5?24 Run: ICPMS2-C-0805224 85 115 Runr ICPMS2-C-080522A 70 130 Run: ICPMS2-C-080522470 130 Batch; R101582 05l22lOB 12:27 0il22fi8 12:34 05122fi821:11 45122fi821:17 2A Qualifiers: RL - Analyte reporting limii. I I ND - Not deteded at the reporting limit. ENEfrGy LABORATOFTES, lNC. '2393 Salt Creek Highway @601)' P.O. Bo.x 3258 ' Caspq YWB2602 fAiFiiiAas.'iis.0iti . sizi' osu , rax s07.234.t639 "cisper@energytab.cr' wwwmergylab'com QA/QC Summary RePort Clienh Denison Mines (USA) CorP Project APril Groundwater Report Date: 06106/08 Work Order: C08050104 Resutt unlts RL o/oREC Low Limlt High Limlt RPD RPDLimit Qual Method: E200.8 Sample lD: LRB Uranium Sampls lD: LFB Uranium Sample lD: C08050764-002AMS4 Uranium Sample lD: C08050764{02AMSO4 Uranium Method Blank ND mg/L Laboratory Fortifi ed Blank 0.0511 mg/L Post Digestion Spike 0.0741 mg/L Post Digestion Spike Duplicate 0.A742 mg/L 1E-05 0.00030 0.00030 0.00030 Run: ICPMS2-C-0806024 Run: |CPMS24-080602A 102 85 115 Run: ICPMS2C-0806024 107 7A 130 Run: ICPMS2-C-080602A107 70 130 0.1 Batchr R102053 06/0208 l3:51 0610?08 13:58 06/03/08 09:40 06/03/08 09:47 20 I I I I I t I I I t I I I I I I I I I Method: E900'1 Sample lo: LCS€A{130 GrossAlpha minus Rn & U Sample lD: MB€A{130 Gross Alpha minus Rn & U SamplelD: C08050i04'003BMS Gross Alpha minus Rn & U Sample lD: C08050104-003BMSD Gross Alpha minus Rn & U Laboratory Control SamPle 28.zloitL Method Blank 0.9 pOill Sample Matrix Spike 23.6pCi/L Sample Matrix Spike DuPlicate 26.7PCilL Run: G5000W-080521870 130 Run: G5000W-0805218 Run: G5000W-0805218 70 130 Run; G5000W-080521 B 70 130 Batch: GA-0130 05/23108 12:33 05123108 12:33 OS|2S|OB 12t33 05/23/08 12:33 22.4 1,0 12 1.0 77 1.0 89 Qualifiers: RL -Analyte reporting timit.ND - Not deteGled at the reporting limit. I ENEEGY LABORATORTES. lNC. . 2393 Safi Creefi Highway (5260A ' PO. Box 32.58 ' Caspe| WY 82602 ToltFreeB8,.235.05l5 , 307. 0515 ' Fax 307.234.1639 ' casper@energylab'c wwlu.energytao'com I t t QA/QC Summary RePort Client Denison Mines (USA) CorP Project APril Groundwater Report Date: 06/06/08 Work Order: C08050104 Result units RL %REC Low Limit High Llmit RPD RPDLlmit Qual I I I I I t I I I I I I l,tethod:sw8260B Sample lD: 09-iliaY48-LCS-8 Benzene Carbon tetrachlotide Chtoroform Chloromethane 6+p-Xylenes Methyl ethYl ketone Methylene chloride Naphthalene o-xylene Toluene Xylenes, Total Su rr: 1,2-Dicttlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Brornofl uorobenzene Sun: Toluened8 Sample lD: 09-May-08-MBLK-11 Benzene Carbon tetrachloride Chloroform Chloromsthane 61+pXylenes Methyl elhyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xytenes, Total Surr: 1,2-Diehlorobedene-d4 Surr: Dibromofluoromethane Surr: p-Bromofl uo robenzene Suff: Tolueile-d8 Sample lD: C08050{044028MS Benzene Carbon tekachloride Chloroform m+p-Xylenes o-Xylene Toluene Xylenes, Total Laboratory Control $amPle 5.4 ug/L 5.4 ug/L 5.6 ug/L 5.3 uglL 10 ug/L 44 ug/L 5.5 ug/L 4.2 ugl 5.0 ug/L 5.0 uglL 15 ug/L Method Blank ND uE/L ND ug/L ND ugil ND ug/L ND ug/L ND ug/L ND ug/L ND ugil ND uglL ND ugll ND ug/L Sample Mairix SPike 1100 ug/L 1300 ug/L 2800 ug/L 1100 uglL 1200 uS/L 1000 uglL 2300 ug/L 1.0 108 1.0 109 1.0 112 1.0 106 1.0 103 20 87 1.0 110 1.0 8s 1.0 100 r.0 100 1.0 142 1.0 100 1.0 104 1.0 101 1.0 101 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 113 115 101 95 50 10650 126 50 123 s0 113 50 11850 i00 50 116 Run: GCMS2-080509A 80 120 70 130 80 120 80 120 Run: GCMS2-0805094 Run: GCMS2-0805094 Batch: R100951 05109/08 13:49 05/09108 15:49 05/1U08 07:05 70 70 7A 70 70 70 7A 7A 7A 70 70 80 7A 80 80 130 130 130 '130 130 130 130 130 130 130 130 120 130 130 120 130 130 130 130 130 130 130 70 70 7A 70 70 7A 70I I T Qualifiers: RL - Analyte reporting limit.ND - Not detected at the reporting limit. I f,fFEf{,ihTEf{?5!E? iiqi-fl!W3;,:;t E'{:*;.fi1i#!,il:,'i;:' 80 I I I I I I t I I t t I T I T QA/QC Summary RePort Clien* Denison Mines (USA) CorP Project APril Groundwater Report Date: 06/06/08 Work Order: C08050104 Method: 5I\182608 Sample lD: C080S010+002BMS Sur: 1.2-Dichlorobenzened4 Surr; Dibromofluoromethane Surn p-Bromofluorobenzene Sur[ Toluened8 Sample lD: G08050104-002BMSD BenzenB Carbon tetrachtoride Chloroform m+p-Xylenes o-Xylene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane $urr: pBromofl uorobenzene Surn Toluened8 Sample Matdx SPike Sample Makix SPike Duplicate 1100 ugll 1300 ug/L 2800 ug/L 1200 ug/L 1200 ug/L 1000 ug/L 240A ug/L Run: GCMS2-080509A 120 130 80 70 80 120 80 120 Run: GCMS2-(E050SA70 130 7A 130 70 130 70 130 70 130 70 130 70 130 80 120 70 130 80 120 1.0 113 1.0 't17 1.0 t10 1.0 95 50 111 50 125 50 125 50 120 50 124 50 104 50 122 1.0 114 1.0 114r.0 111 1.0 94 4.4 2.5 o.7 6.2 5.3 4.3 5.7 0.0 0.0 0.0 0.0 05/13108 07:05 05113/08 07:44 20 2A 20 20 2A 20 2A 10 10 10 10 Result units RL %REC Low Limlt High Limit RPD RPDLimit Qual I I I Qualifiers: RL -AnaMe reporting limit,ND - Not detected at the reporting limit. -f o -loo)o TL t t I E'Htr Ol T BE0(i lEg 5E rgE (, I $$ IEa<aI E.E(UE leE I .3Etr-1 I .EEoH l5$ I HHI I Wdr- 3rJ e €Eg6 E'6 IIao o.E us s$N t\)xxTLFF -s j.$ ,$$ {\r E+dE E &t u 11-e\I =E =l * EEEI"E€PE{lt} t 5E E h, o,- ,1 ESEIE +\}6 (wd punoreu:nl HsnU Jaqlo,{essEolEi X uo[EtaBan spttosisl|osrqEtr 4Y g OeASMV:adi(lapueg k slauleluoc lo raqunN =c8"OEo.=o'(Jo o o.o.q r-t:E t-,6> oE 0)o,liJ L*:l i) ,ELJpP <EtdEB < I.L (E EE &.Ea .*_.u, Hs,L^ 434.9 Bptx E gh5 6u=a I I I T t I I I t I I t I I ll lr lr lr lr Energy Laboratories lnc Workorder ReceiPt Checklist r[$r$tfi l[fi illlilil ffi ilffi tlfl lffi fflffi Denison Mines (USA) CorP c080501 04 Date and Time Received: 5/212008 10:30 AM Received bY: ah Carrier name: Next DaY Air Login completed by: Kimberly Humiston Reviewed bY: Reviewed Date: Shipping container/cooler ln good condition? Custody seats intact on shipping container/oooler? Custody seals lntac{ on sample bottles? Chain of custody Presen9 Chain of custody signed when relinquished and received? Chain of custody agrees with sample labels? Samptes ln propsr container/bottle? Sample containers intac't? Sufficient eample volume for indicated test? All $amples teceivedwithin holding time? Containerffemp Blank temperature in compliance? Water - VOA vials havo zero headspace? Water - pH acceptable uPon recaiPt? Yes [f Yes [f Yes fl Yes Bl Yes ffi Yes ffi Yes fl Yes fi Yes ffi Yes fl Yes [J Yes [l Yes Bl NoE NoD NoI NoE No fl Non No fl No fl No fl NoD No fI NoU NoE Not Present I NotPtesent D Not Present [l 5'C On lce NoVOAvialssubmitted n Not APPlicable n Contact and Correctivs Ac-tion Comments: Per phone conversation with Ryan Palmer, sample MW 26 needs u, Mn, and chloroform set I #F#f{,i.!fro.gf{?tr!fi *f;ift'!,i!!,95fi.#gg-:+lXi!,i8i,f$,f,fio:"* i'f'fif7ia{'{u1lff' I Date: 06Jrn-08 t I I I I I I I I I I I I I I I I CLIENT: Project: Denison Mines (USA) CorP April Groundwater CASE NARRATIVE Sampte Delivery GrouP: C08050104 THISISTHEFINALPAGEoFTHELABoRAToRYANALYTICALREPoRT oRIGINAL SAMPLE SU BMtrrAL(s) ft;;iJ;ffir" "rlmitt"rs nave been returned with the data package. *#ft:,]f,?t"Hl|H3="3r"X5tlt}!5i#::"it :)"q properry p,".1"-T_"g by accepte{ standards,. sampres that are hand delivered immediately after corection sn"rr nel"onlierlJui.J"pt ure if thLre is bvidence that the chilling process has begun' ff:,?:i#f.Ifl#Shtift-" and gross beta is intended as a drinkins water method ror tow rDS waters' Data provided iiv iiii"-riJtnr*iorion po[ror" *rtErs should be viewed as inconsistent. W3*,',LiXrtLlLI'il3," or hours.(Z oa11l, -rrre time derav in rerurning the canister to the laboratory for processins should be as short u" po*liit"io "ooia'e*""ir1ue Jr"av. M"ximum recommuno"o o"t"v between end of exposure to iJii"iits oi counting should not exceed 8 days' SOIUSOLID SAMPLES All samples reported on an as recelved basis unless othenrise indicated' *]ffi}1i;#ffilt?H.r"":,lH:E['',"3tBiEf''.'iotfJryEll505.Datarep-orted-byEllusingEPAmethod oos reflecis the resurts r"l?J"i" inairiorarRroctois.'\ /!,;; til r*ults for uri"""*li" ilo (not d-etected)' the sample ;;i; ;PA ; mpl iance critaria for PCB monitoring' 3Yr.t"3$rrffi:lHJlTi:l5Ees ro an gytlido,raboralory ryay be.required. rf so, ENERGY LABoRAToRIES wilr utirize its branch raboratories or qualified contract rauoraffiJioittis'service. eni "r"i',,l"uoratories will be indicated within the Laboratory AnalYtical RePort' BRANCH LABORATORY LOCATIONS "ri-uIE*rSV Laboratories, lnc' - Billings' IvlT eli-g - Energy Laboratories, 1""' - 911!ti"^' Y,"l eli-6 - Energy Laboratories, lnc' -r{elerta'.Mr^^ eli-r - Energy Laboratories, lnc' - t{aplo ulry' DU ;ifi- il;;6i t-auoratories, lnc' - college station' rX fi5E;[wt"rt;;;; FL-DoH NELAC: E87641; Arizona: Azo6ee; carifornia: o2118cA il;s;"I wviooooi ; U;;'i0?2ts0s1 S ; virsi nia: 00057; Wash in ston : C 1 eo3 ISO 17025 DISCLAIMER: The results of this nnatyircal Report relate only to the items submitted for analysis' ENERGY LABoRAroRrEs, rNc' - CASPER'WY "1'til"-:.tl1t Tg: :::H1::f"1ffi"i"fi3':'iir]lXff;:flt f"*1 il:f""J"A'":"TI3Xi,="il[':;;1H,i{!i[!i41616"i:Ir":s[**i#3il"'1,:tf::Xlfi:"riJ,H:"Jfi;irequirements as set forth bv the above accreorrns ifli,l5"i;"il"1il;;;;;io=;;iJriourO be certified in the sample l,?[",ji"t'hJJl'drtin"ution..-'nrr analysis.data to be subminel g.rgy]:Ylll^.,,r, ".*:i:t,Jffi;'|:,Eiff:',J[];t'Li,[.lilffit6n "oro,g" by visitin! www.energyrab.com ELlappreciatestheopportunitytoprovideyouwiththisanalyticalservice.Foradditionalinformationandservicesvisitour web page www.energylab'com' I T I ENEBGTLABORATORI€9,!ryq:._zsg?sattcreekHlglway(ap60t).po.Boxop-i?. caspe4wyse60zroll Free 888.235.a5ff ' sozi ' 0515 . Fax 302.ea4./fr9 , -cisperdenergytab.q' *ww:;fr;biiab.;;;;- Client: Projeet: Lab lD: ClientSample lD: Denison Mines (USA) Corp May Groundwater c08050764-001 MW14 ReportDate: 06/08/08 Collection Date: 05/f4l08 09:07 DateRecelved: 05/16/08 Matrlx: Aqueous LABORATORY ANALYTICAL REPORT Anatyses Result Unlts Qualifiers RL MCU QCL Method Analysle Date I By I I t t I I I t T T t T T T METALS. DISSOLVED Manganese Uranium 10 0-30 2420 ug/L 62.6 ugtr E200.7 E200.8 O5,l27la815:40 / cp 06103/08 09;26 / sml Report Dellnltlons: RL - Analyte reporting timit. QCL- Quality control limit. MCL - Maxlmum contaminant level. ND - Not detected at the reporiing limit. T I ENEfrGY UIBORATORIES, lNC. ' 2393 Salt Creek Highway (82001) ' PO. $ox 3258 ' Caspet WY82602 TollFree888.235.05l5 ' 307-' "0515 ' Fax 307.234.1639 ' casper@energylab.q wwuenergylab.com I I I LABORATORY ANALYTIGAL REPORT Client: Project: Lab lD: Client $ample lD: Denison Mines (USA) Corp May Groundwater c08050764-002 MW26 Report Date: Collection Date: DateReceived: Matrix: 06108/08 05114/08 09:30 05/16108 Aqueous I Amlyses Result Unlls Quallfiers RL MCUQCL Method Analysls Date / By ugrL ug/LI I I t I I I I I t I METALS - DISSOLVED Manganese Uranium VOLATILE ORGANIC COMFOUNDS Acetone Benzene Carbon tetrachlodde Chloroform Chloromethane Methyl ethyl ketone Methylena chloride Naphthalene Toluene Xylenes, Total Sur; 1,2-Dichlorobenzened4 Sun: Dibromofluoromethane Surr: p-Bromoff uorobenzene Surr: ToluenedS 1 170 20.7 10 0.30 20 1,0 1.0 50 1.0 20 1.0 1.0 1.0 1.0 80-120 70-1 30 80-1 20 80-1 20 ND uglL ND ugll ND uglL ,2OA ug[ ND ug/L ND ug/L 33 ug/L ND ug/L ND ug/L ND ug/L 111 %REC 108 %REC 102 %REC 93.0 %REC E200.7 8200.8 05n7lAB 15:521 cp 06/03/08 09;33 I sml SWE260B 05rISl08 15:10 /dkh SW8260B 05119/08'15:10/dkh gW8260B 05119/08 15:10 / dkh SW8260B 05119/08 15:49 I dkh SW8260B 05/19/0815:10ldkh SW8260B 05/1S/08 15:10/dkh SW8260B 0511910815:10/dkh SW8260B 05/1910815:'10ldkh SW8260B 05/1910815:10/dkh SW8260B 05/1s10815:10/dkh SW8260B 05/19/08 15:10 / dkh SW8260B 05/1s/08 15:10 / dkh SW8260B 05/19/08 ls:10 / dkh SW8260B 05/1910815:10/dkh I I I Rspoil RL - Analyte reportlng limit. Definitions: eCL - euallty control limit. D - RL increased due to sample matrix interferense. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. I ENEBGTLABOfrA1OBES,INC.'2393*a/tCreekHighway(52601)'PO.Box3258'CaspetWY82602 TotlFree888.235.05l5 ' 3071 '0515 ' Fax e07.234,1639 ' casper@energylab.q www,energytab.com I T I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD:70enison Mines (USA) CorP Report Dater 06/08/08 Collection Dato: 05/14/08 1 1:50 DateReceived: 05/16/08 Matrix: Aqueous May Groundwater c08050764-003 ClientSample lD: MW32 t Analyses Rerult Units Qualiflers RL MCU OGL Method Analysis DatE I By I I I T I I I T I I I METALS. DISSOLVED Cadmium lron Manganese Nickel RADIONUCUDES . DISSOLVED GrossAlpha minus Rn & U Gross Alpha minus Rn & U Precision (t) 2.08 9410 5810 64 4.0 0.8 ugrL ug/L ug/L ug/L 0.50 120 10 20 1,0 E200.8 E200.7 E200.7 8200.7 ES00.1 ES00.1 06/02108 20:01 I sml 0512708 16:00 / cp ASETI$B 16:00 / cp A5D710816:00 / cp o5t2910822i55 lcl|# o'l29lo1 22:55 I ctw pCilL pCilL I t T Report Deflnltlone: RL . Analyte reporting limit. QCL - Quality control limit. D - RL lncreased due to sample matrix interference. MCL - Maximum contaminant level. ND - Not detecled at the reporting limit. I ffF[f{,t2!,?Ef{?i'ff;''Yf;iu?'f,f'l[95i{.i#y:#W3;83,f,'{i*'?;*3':;f:ib'y:u!S'i' I I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lDl Denison Mines (USA) CorP May Groundwater c08050764-004 MW60 Report Date: 06/08/08 Coltection Date: 05113it08 14:35 DateReceived: 05116/08 tillatrix: Aqueous Resutt Unlts Qualifiers RL MCUQCL Melhod Analysis Date I By Arxtlyses pCill pci/L I I I I T I I I I I t I METALS . DISSOLVED Cadmium lron Manganese Nickel Uranium RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U GrossAlpha minus Rn & U Precision (t) VOLATILE ORGANIC COM POUNDS Acetone Benzene Carbon ietrachlodde Chloroform Chloromethane Methyl ethyl ketone Meihylono chlotids Naphthalene Toluene Xylenes, Total Surr: 1.2-Dichlorobenzened4 Surc Dibromofl uoromethane Surr: p-Bromofl uotobenzene Sur: Toluene-d8 ND ND ND ND ND 1.0 0.4 ND ND NB b.o ND ND ND ND ND ND 108 103 102 95.0 ugJL ug/L uglL ug/L ug/L ug/L uSlL ug/L ugrL us/L ug/L uglL ug/L uglL uS/L %REC %REC %sREC %REC 0.50 30 10 20 0.30 1.0 20 1.0 1.0 1-0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-130 80-120 8G120 E200.8 E200.7 E?OA.7 E200.7 E200.8 E900.1 ES00.1 SWEZoOB SW826OB sw8260B SW826OB sw8260B SW826OB sw8260B sw8260B $w82608 sw8260B sw8260B sw8260B sw8260B SW826OB 06/02/08 20:08 / sml O5l27rc8 16:05 / cp A5l27l1g 16:05 , cp 05D7nB 16:05 / cp oBlozloa 20:08 / sml 0512510822l.53 lcr:tt 05nWA822:55 I crw 05/19/08 14:31 /dkh 05/19108 14:31 /dkh 05/19/08 14:31 / dkh 05r1s/08 14:31 ldkh 05/19/08 14:31 /dkh 05/19108 14:31 / dkh 05/19108 14:31 /dkh 05/19/08 14:31 Idkh 05n9108 14:31 /dkh 05/19/08 14:31 ldkh 05119108 14:31 /dkh 05/19108 14:31 / dkh 05/1 9/08 14:31 I dkh 05/19/08 14:3,l / dkh I I I Report FtL - Analyte reporting limlt- Deflnitions: eCL - Quality conhol li1nit. MCL - Maximum contaminant level. ND - Noi detected at the reporting limit. I EtrFEf{,blf,?E{?2!E? 'rf;i,'t'f,i!'o95fl f;gg.1f6flB;i3,f,:{i"';#:i:ib[:"i'i' I I I LABORATORY ANALYTICAL REPORT Client: ProJect: Lab lD: Client SamPle lD: Denison Mines (USA) CorP May Groundwater c08050764-005 MW65 Report Date: Collectlon Date: DateReceived: Matrix: 06108/08 0511410811:5o 05/16/08 Aqueous Result Units Qualifiers RL MCUOGL Method Analysis Date / BYI I I I t I I I I T I I METALS. DISSOLVED Cadmium lron Manganese Nickel RADIONUCUDES . DISSOLVED GrossAlPha minus Rn & U Gross Alpha minus Rn & U Precision (t) 2.12 ug/L 9850 uglL 5770 ug/L 63 ugrl 0.50 30 10 20 1.0 E200.8 E200.7 E200.7 E-200.7 ES00.l E900.1 06/0208 20:141sml 0512710816:09 / cp 05n7/08 16:09 / cP 05i27fi816109 / cP 05129108 22:55 / cnar 05f29/08 22l.55 I crw4.8 pCUL0.8 pCi/L T I I Report RL - Analyte reporting limit' Deflnitions: QCL- Quality control limit. MCL - Maximum contaminant level' ND - Not detecl€d at the teporting lirnit' I fjiFyf{,tlf,?Ef{?yff''lf;iu'fnf,fl|FSil r#-:'J!,ifi8,,i;8:,8trf'*;#;i:ib{':i:::'f' I I I Client: Project: Lab lD: ClientSamPle lD: LABORATORY ANALYTICAL REPORT Denison Mines (USA) CorP May Grourrdwater c08050764-006 Trip Blank RePort Date: 06/08/08 Collection Date: 05/14i08 11 :50 DateReceived: 05/16/08 Matrix: Aqueous Qualiliers RL MCUQCL Method Analysls Dat€ I BY I I I I I I I I I I I I Result Units AnalYses VOLATILE ORGANIC COMPOUNDS Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone MethYlene chloride Naphthalene Toluens Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofl uoromethane Surr: PBromoff uorobenzene Surr: Toluene-d8 ND ND ND ND ND ND ND ND ND 107 s8.0 102 95.0 ugrt ugl1- uglL uglL uglL ugIL ug/L ug/L ugIL %REC %REC 06REC %REC 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 sw8260B $w82608 sw8260B sw8260B sw8260B sw8260B sw8260B SW826OB SW826OB sw8260B sw8260B SWB26OB sw8260B 05119i08 13:52, dl$ 05/1 9/08 I 3:52 / dkh 05/1 g/08 1 3:52 / dkh 05/tS/08 13:52 I dkh 05/1S/08 13;52ldkh 0511S108 13:52rdkh O5/19108 13:52rdkh 05/19/08 13:52 /dkh 05/19/08 13:52 / dkh 05119108 13:52 / dkh 05119108 13:52 / dkh 05/19/08 13:52 /dkh 05/19108 13:52 / dkh I I I MCL - Maximum contaminant level' Report Deffnltlons: RL - AnaMe reporting limit' QCL- QualitY control limit'ND - Not detected atthe reporting limit' #Fyf{,ilf,?Ef{%'f,? wf;i'!'f,ftoFSif iiflY:If#9i3'i;3'W*;'f'f#:!"%:i':' June 08, 2008 Denison Mines (USA) CorP 6425 S HwY 191 Blanding. UT 84511 Workorder No.: C08050764 Project Name: MaY Groundwater ANALYTICAL SUMMARY REPORT QuotelD:ClMo-POCWells/MonthlyGroundwaterSampting ;"*sy Lrb*rt"ri* 1"" received the following e uffiies irom Denison Mines (USA) Corp on 5116/2008 for analysis' SamPle lD ClientSamPle lO Collect Date Receive Date Matrix 05/14108 09:07 05/16/08 ffi"ou" Metals by ICPIICPMS, Dissolved c0805076+001 MW 14 c08050764-002 MW26 a1n4fis 09:30 05/16/08 Aor"ous Metals by ICP/ICPMS' Dissolved' SW8260B VOCs, Standard List c080507H-003 MW 32 O5/14/08 1 1:50 05/16108 nou*u" Metals by ICP/ICPMS, Dissolved. Gross Alpha minus Rn222 and Uranium c0805076+004 MW60 05/1 3108 14:35 05/1 6/08 noueou. Metals by ICP/ICPMS, Dissolved Gross Al-pha minus Rn222 and Uranium SW8260B VOCs, Standard List c08050764-005 MW65 05/14/08 1 1 :50 05/16/08 Aou"ou" Metals by ICP/ICPMS, Dissotved Gross Albha minus Rn222 and Uranium 05/14/08 1 1 :50 05/16/08 Aqueous SW8260B VOCs, Standard Lisi ReportApprovedBY: N^fi" I A*llry I lt I I I I I I I I lr lr lr lr lr lr lr l: C08050764-006 TriP Blank As appropriate, any exceptions or problems with the analyses are noted in the Laboratory Analytical Report' the OA/Ob Summary Report, orthe Case Narrative' lf you have any questions regarding these tests results' please call' I ENERoy LABoRAroFtEa NC. . zser sat.q,p9f i!rrg-:t!!rfrrr3i,:$rf:ir:* _,f:ili!#;::rtr'friiF;;;;sB.Vi5.di7i; eor." qnt ' Fax 302234' I I QA/QC Summary RePort Clienft Denison Mines (USA) CorP Project MaY Groundwater Report Date: 06/08/08 [UorkOrder: C08050764 T I I I I T I Method: F.200.? Sampte ID: MB'080527A lron Manganese Nickel SamPle lD: LFB'080627A lron Manganese Nickel Sample lD: C08060764{0{AMS2 lron Manganese Nickel Sampla lD: C08050764"00'|AMSD2 lron Manganese Nickel Method Blank ND mS/L ND mg/L ND Mg/L Laboratory Fortifi ed Blank 1.09 mglL 1.05 mglL 1.O2 mg/L Sample Mark Spike ?.'16 mg/L 4'40 milL 2,O2 mg/L Sample Matrix SPike DuPlicate 2.18 mg/L 4.50 mgll 2.05 mgrl Run: iCP2-C-040527A Run: |CP2'C-080527A85 125 85 125 BS 125 Run: |CP24-080527A70 130 70 130 70 130 Run: ICP24-060527A70 130 70 130 70 130 A51271O815:.32 ASl27lO8 15:36 05127108 15:44 0s127/08 15:48 ?a 20 2A 0.005 0.0003 0.004 0.030 109 0.010 105 0,050 102 0.030 106 0.010 97 0.050 99 0.030 107 0.010 102 0.050 101 1.2 2.1 1.5 RL o/oREC Low Limit High Limlt RPD RPDLlmit Batch: Rl01828 mg/L mg/L I I I I t I Method: E200.8 Sample lD: LRB cedmium Uranium Sample lD: LFB Cadmium Uranium Sample lD; C08050737'001CMS4 Cadmium Uranium SamplelD: 608050737401GMSD4 Cadmium Uranium Method glank ND ND LaboratorY Fortified Blank 0.0507 mg/L 0.0511 mg/L Post Digestion SPike 0.0489 mg/L 0.0748 mglL Post Digestion Spike Duplicate 0.a477 mglL 0.0733 mg/L 1E-05 1E-05 0.0010 101 o.o0o30 102 0.010 s8 0.00030 107 0.010 95 0.00030 104 Batch: Rl02053 06/02/08 13:51Run: ICPMS2-C-0806o2A Run: ICPMS2'C-080602A BS 115 85 115 Run: ICPMS2'C-080602A 70 130 70 130 Run: ICPM$2-C-080602A 70 130 70 130 2.3 1.9 06/02108 13:58 06/02/08 20:48 0610?08 20:55 20 20 I I I Qualifiers: RL -AnalYte rePodng limit'ND - Nol detected at the reporting limit' I I f,trF#f[,iif,?Ef{?yr':'":'f;;,'l'!,f!l'9:;;!i;#-:"f"i9iL''i;E'tr'i*';"tr:f:!'ffitrtr' QAIQG Summary RePort Client Denison Mines (USA) CorP ProjecC MaYGroundwater Report Oate: 06108/08 Work Order: C08050764 I t I Method: ES00.1 Sample lDt LeSGA{}132 GrossAlpha minus Rn & U Sample tD: MBGA{132 GrossAtPha minus Rn & U Sample lD: C0805076{'003BMS Gross AlPha minus Rn & U Sample lD: C08050764'003BMSD Gross AlPha minus Rn & U Laboratory Control SamPle 27.zPCitL Method Blank 1 PCi/L $ample Matrix Spike 23'ZPCitL Sample Mafix SPiko DuPlicate 26.8PC[/L Run: G5000W;080527A 99 70 130 Run: G5000W-0805274 Run: G500OW-0S0527A 10 130 Run: G5000W-08052747A 130 1.0 0512910822:55 05/29/08 22:55 0512908 22:55 a51291O822|55 24.5 I I I I I 14 1.0 1.0 I I I I I I RL ToREC Lo'$, Limit High Limit RPD RPDLlmit Qual I I I Qualifiers: RL - Analyts rePorting limit.ND ' Not detec{ed atthe reporting limit' I f#F#f{,t1f,?Ef{%!fr:''ryf;i,'t'!,i![95if #gy!',f:f,%;'#fi,E:i;*';"ff;f:"bw:'1fl' I I I I I I I I I I I I I I I QA/QC Summary RePort Clienfi Denison Mines (USA) CorP Project MaY Groundwater Report Dater 06/08108 Work Order: C08050764 Method: SW8260B Sample lD: {9-MaY{18-LCS-3 Benzene Carbon tekachlotide Chlorotorm Chloromethane m+p-Xylenes MethYl elhYl ketone Methylene chloride Naphthatene o-XYlene Toluene Xylenes, Total Sur?: 1,2'Diohlorobanzene-d4 Surr: Dibromofluoromethane Sun: PBromofl uorobenzene Surr: Toluene-d8 Sample lD: 19-MaY48-MBLK-6 Benzene Carbon tetrachlodde Chloroform Chloromethane 6+p-Xylones MethYl ethYl ketone Methylene chloride Naphthalene o-XYlene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzened4 Surr Dibromofluoromethane Surn FBromoff uorobenzene Surr: Toluene"dB SamPle lO: C08050?64{02BMS Befizene Carbon tetrachloride Ghloroform m+p-Xylenes o-Xyleae Toluene Xylenes, Total Laboratory Control Sample 11 ug/L 11 ugll 10 ug/L 10 ug/L ?2 ug/L 17O uS/L 9.6 ug/L 8,4 ug/L 11 ug/L 11 uglL 32 ug/L Method Blank ND ug/L ND ugll. ND ugtl. ND uglL ND ug/L ND ug/L ND ug/L ND uglL ND ug/L ND ug/L ND ug/L Run: GCMS2-080519A70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 ?0 1S0 70 130 80 120 70 130 80 130 80 124 Run: GCMS2-080519A 't.0 107 1.0 112 1.0 102 1.0 104 1.0 10s 20 87 t.0 s6 1.0 84 1.0 107 1.0 106 1.0 108 1.0 100 1.0 98 1.0 100 1.0 100 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 108 80 120 100 70 130 fiz 80 120 94 80 120 Run: GCMS2-08051s4 05119/08 11:17 05119/08 13:14 05/19/08 17:06 Sample Matrix SPike 1100 ug/L 1200 ug/L 2200 ug/L 1100 ug/L 1100 uglL 950 uglL 2100 uglL 50 108 70 50 121 70 50 102 7A 50 107 7A 50 108 70 50 s5 7A 50 107 70 130 130 130 130 130 130 '130 RL %REc Low Limit High Limit RPD RPBLimit Qual Batch: R101366 I I I Qualifiers: RL - AnalYte rePorting limit'ND - Not detected at the reporting limit' I ,1trF#f{,iif,?Ef{?5!f,! 'rf;iu'l'!,fqi"9!iilgg!.:ffi8;,:;fr,',,,'i,',*.-?'fffi!rffl!i"f' I I QA/QC Summary RePort Clienfi Denison Mines (USA) CorP Proiect MaY Groundwater Report Date: 06/08108 Work Order: C08050764 I I I I I I I I I I I I T Method:sw8260B Sample tD: C08050764-002BMS Surr: 1 .2-Dlchlorobenzene-d4 Sun: Dbromofl uoromethane Sun: p.Bromofl uoroben:ene Sutr: Toluened8 Sampte lD: C08060?64402BMSD Benzene Carbon tetrachloride Chloroform 6+p-Xylenes o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surfi Dibromolluotometh ane Surr: P'Bromofl uolobenzsne Sur: Toluane'd8 Sample Matrix Spike Sample Matrix Spike DuPlicate 1100 ugA fi9} ugft 2300 ug/L 1200 ug/L 1200 ug/L 1000 udl 2300 ug/L Run: GCMS2*080519A 80 124 70 130 80 1?:0 80 120 Run: GCMS2-080519A 1.0 1.0 1.0 1.0 50 50 50 50 50 50 50 1.0 {.0 1.0 1.0 130 130 130 130 130 r30 130 120 130 120 124 0.7 2.9 3.1 9.3 8.2 8,1 a.7 0.0 0.0 0.0 0.0 107 100 109 s4 109 7A 124 7A 109 70 118 70 117 70 to3 70 117 70 108 80 102 70 1't0 80 94 s0 05119/08 17:06 05/19/08 17:45 20 20 2A 20 20 20 20 10 10 10 10 RL %REC Low Limit High Llmlt RPD RPDLimit I I t Qualifiersl RL -AnalYte rePorting limit.ND - Not detected at the reporthg timit' E6'ag r0 $E6.le 9t:. .EtitlB"6tE 6 IgEE lSa oi l:tEllsE6 llt i$ IEi r iIEE 8 il;EE EIff: -]EE E IIEE.E[€ s: ]I*EE HIE;H?l?spsltE s IEE q il€fr8 llBE E ,lEt s +lsg s st'E I 6 EI?HE&leE i -IE" E sls Etlt e PIEElor El'E LJ.NIt EIE lHH E€ E E AEI HIE ,V,-H'Ifu* (IlcI-Q qnai.E - rJ=tr EEe aH =ao.t{ c -E$d€ E -(4 O rN$J no5 L/lfl! s r k"4,?4 a raql6 {es8solE E ,ooa"g"fi .irospttoStaeffi r.V E'6'9151i1y:ed(Ie;due5 =s$uleluo3 ]o Jaqu,nN I o'co.t#il orE Eaj ;EulE,-rtsL-lpP 4 EE -t l! fi, oE &? tr8.9 Q'Eq< ,sE g ${i o.Jl,? cla Betx gEEF -+ o I 0)U}(o(L I I I I l€g !- OlI BE il,?^ IEE =El8aA,E -oltEI I .g$ I, ho;lI -= II (Efi I.EE .<aI tsI trEIEE laE r3€ rr-1 rEa rsH I I I I I I I I I I lr lr EnergY Laboratories lnc Workorder ReceiPt Checklist tlllffilffi lllllttlllffi lll[tillffi ltt $ltllll Denison Mines (USA) Corp C08050764 Logincompletedby:JenniferMcVayDateandTimeReceived:5116/20089:50AMReceived bY: gt Reviewed by: Canier name: Next Day Air Reviewed Date: Shipping container/cooler in good condition? Yes [t No f] Not PIe$ent E Custody seals intact on shipping containerlcooler? Yes fl No fl Not Pressnt E Custodysealsintactonsamplebottles? Yes f] No D NotPresent [t Chain of custody Present? Yes [t No E chain of custody sign€d when relinquished and received? Yes [t No E Chain of custody agrees with samPle labels? Yes [t No I Samples in proper containeribottle? Yes [t No D Sample containers intact? Yes [t No fl Sufficientsamplevotumeforindicaiedtest? Yes [t No fl All samples received within holding time? Yes Bt No il container/Temp Blank temperature in compliancer ves [t No il 6'c on lce water-voAvialshavezeroheadspace? Yes [t No I NovoAvialssubmitted tr water - pH acceptable upon receipt? Yes [t No f] Not Applicable I ::::=:==::==:=:::::::::::::::::::::::=::::::::::::::::: ====="=-'-::===:::::::::::::: ::=--:==-'--:=::::::::::::::::::=::::======:== Contact afid Corrective Action Comments: None I I f,fF*f{#ia'Ef{W ryf;ir'!,f?lifsi{#fl!.:x!:,igig;ihob:t,,,ry.,,fffi:aff:,xitr, T Date: 08-Jun-08 CLIENT: Project: Denison Mines (USA) Corp May Groundwatert T T T T T T T T T T T t t T I Sample Delivery Group: C080SO764 CA$E NARMTIVE THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT OR IGIIIAL SAMPLE SUBMITTAL(S)All originar sampre submittars havlieen returned with the data package. SAMPLE TEMPERATURE COMPLIANCE; 4"C (r2'C)Temperature of samptes ,"""ir;;#iJi# i I:3hd;Xfil'iiliiioi'i"rv-iitli"dit'ii;;!i#Hi:1"1J#fllJ".r?#T,[t..TiJglffi':Jf,,Til":ffi,flnH:'J' gROSS ALPHAANALYSIS ["][['f:,fl""'?jl,ffi"?'i,??"1l:gi::.rffi8 L'J?i:H:.,::fl:H[ltxlrrer merhod for row rDS waters. Dara provided RADON IN A'R ANALYSIS The desired exDosure lime-is 48 hours.(2 days). The time deray in returning the canister to the raboratory for processing;llliii,ff:i*",11ff fnly*i;i*j:ft*i|- decav. Maximum recomriended deray i"i,,""ii""o orexposure ro SOIUSOLID SAMPLES All sampres reponed on an as received basis unress otherwise indicated. ATRAZINE, SIMAZINE,AND.PCB ANALYSIS USING EPA 505Data for Atrazine and simazine are reported fronr rpn szbz-,-not from EpA 505. Data reported by ELI using EpA methodflX1lft"Jfi:il.,,:'"'::'fi,::L";lggr.ffi,,tfflT: ?,il11ii,li1l'JiiliJ ",, "","nt," iid'rn? il,*.,"a1, the sarnpre SUBCONTRACTING ANALYSISsubcontracting of samnle analyses to an outside l.aryrat-ory may be required. lf so, ENERGy LABoRATORIES will utilizei::rTflfilfJifi.o[:"R[ q"i'riril;;;t'.;"ffi;Iltories ror'*ris'l"rriil] iiv such raborarories wi, be indicated within the BSlNgH LABoRATORY LocAIoNSetFD - knergy Laboratories, lnc. _ Billings, MTe!1-g - lnergy Laboratories, lr". _ eiiirG iWeli-h - Energy Laboratories, lnc. - nefena. ruireli-r - Energy Laboratories,'1"". _ n"UA'6itV,'SOeli-t - Energy Laboratories, tnc. _ Coriege iirti-*, n< CERTFICATIONS: USEPA: \rv'/00002: FL-qoI.lIE!1c: E87641; Arizo-na: ,q2o699; carifornia: 0211BcAoreson: Wy200001 ; Utan : SoziSsdd G; Vi;gffi ,"00057; Washin ston : C 1 90S ISO 17025 DTSCLAIMER: The results of this Anaryticar Report rerate only to the items submi*ed for anarysis. ENERGY LABoRAToRlEg' lNc' - cAsPER,wY certifies.that cer{ain method serections contained in this report meetreguirements as set forth bi.ttre anove a""-i"'iiiing'"rthoriti*s. Soie i"Iurtlruqu""ted by the crient may not be covered:#:'","ii,,fTll,"#fH;,0'Lii, fffj: *,'"T:;:bi*#"gmZ"U;e"**shou,d be certin6d ,. tn" i,iipr" 5:fTiJ:iffi:JHi[ffiJ# to provide vou with this analvticat service. For additionai information and services visit our I ENERGY LABOnAfOilES, QlC ' 2393 Salt Creek Highway (82601) , PO. *ox 3258 . Casper; Wy sZ60ZToll Free 888.235.05t5 ' 307.235.051i ' Fax 307.234, tobs ; 'cispiideiircyhi.'con , wwvuehirilyiin.ioi- I I I LABORATORY ANA LYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08060292-001 MW1 Report Date:. 07117108 Collection Date: 06/04/08 09:08 DateReceived: 06/06/08 Matrix: Aqueous Analyses R€sult Unlts Qualifierc RL MCU QCL Method Analysis Date I ByI I t I I I t t I t I t T t T MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium / Chloride . / FluorideY Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate / envslcal PRoPERTTES ./ oHV Solicls, Total Dissolved TDS @ 1BO 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 ND mg/L 286 mg/L 1U mg/L 15 mg/L0.3 mg/L59.5 mg/L 0.09 mg/L O.42 mS/L 6.92 mg/L 174 mg/L726 mg/L ND ug/LND ug/L ND ug/L ND ug/LND ug/L ND ug/L 8B ug/L ND udL 66 ug/L ND udL ND ug/LND ug/L ND ug/LND u/L ND udL ND ug/L1.0E ug/LND ug/L ND ugL 1 1 0.50 1 0.1 0.50 0.05 0.05 0.50 1.5 10 0.01 10 5.0 0.50 0.50 25 10 10 30 1.0 10 0.s0 10 20 5.0 10 0.50 100 0.30 15 10 E2OO,E E200.7 E200,8 E200.7 E200.7 E200.8 E2A0.7 E200.E E200.7 E200.8 E200.7 e200.7 E200.8 E200.8 E200.8 e200.7 E200.8 E200.8 e200.7 E900., E900.1 E900.1 423208 A2320 B E200.7 44500-Ct B A4sOGF C 820A.7 E350.1 E353.2 E200.7 E200.7 44500-504 E A4500-H B 06/06/08 15:14 tjh A2540 C 06/08/08 11:23 t dd 06/09/08 12:47 ltit 06/09/08 12:47 I tjt 06/19/08 18:13 / cp 06/18/08 10:41 I t1t 06/10/08 13:12 I t1l 06/19/08 18:13 / cp 06/10/08 't0:49 / eli-b 06/17108 11:22 I eti-b 06/19/08 18:13 / cp 06/19/08 18:13 / cp 06/tll08 11:10/sp Mn7rcl 16:40 / smt 06/19/08 18:13 / cp 06n7n816:40 / smt 06/19/08 18:13/cp 06il19/08 l8:13 /cp 06127n816:40 / smt 06/'19/08 18:13 / cp 06D710816:40 / sml 06/19/08 l8:13 / cp M127n816:40 / smt 06/19/08 ,8:13 / cp 06/19/08 18:13 / cp 06,/2710816:40 / sml 0612710816:40 / smt 06127108 16:40 I smt 06/19/08 18:13 / cp 06127n816:40 / smt 06127108 l6:40 / smt 06/19/08 18:13 / cp 06/30/08 13:54 / crw 06/30/08 13:54 / crw 06/30/08 13:54/crw 7.48 s.u. 1220 mg/L 1.2 pCi/L 0.4 pCiA 0.4 pCi/L Report RL - Analyte reporting timit.Definitions: eCL - euality control limit. MDC - Minimum dgtoclable concentration MCL. Maximum contaminant level. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference I ENEflGY UIBOAATORIES, lNC. ' 2393 Salt Creek Highway (82601) ' PO. Box 3258 ' Caspet WY 82602 TollFree888.235.0515 , 302235.0515 ' Fax 307.234.1d?9 ' casper@energylab.com'www.energylab.nm I I I LABORATORY ANALYTICAL REPO RT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter SemLAnnual Groundwater c08060292-001 MW1 Report Date: 07/1 7/08 Collection Dater 06/04/08 09:08 DateReceived: 06/06/08 Matrix: Aqueous MCUUnlB Qualifiers RL QCL llethod 1.34 o/o 20.3 meq/L 20.8 meq/L T I I t T T I I T I I I Arlalyses TAQUALIW A/C Balance (t 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Analysis Date, By Calculation 06/20/08 15:53 / lab Caleulation 06/20/08 15:53 / lab Calculation 06/20108 15:53 / lab Calculation 06,nU0815:53 / lab Calculation 05120108 15:53 / lab Acetone 86nzene / Carbon tetrachlodde , / chtototormV chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: .l,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofl uorobenzene Surr: Toluensd8 1290 mg/L 0.950 ND ug/L ND ug/L ND ug/L ND ug/L ND uglL ND uilL ND ug/L ND ug/L ND ug/L ND ug/L 108 %REC106 %REC 91.0 %REC99.0 o/oREC sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8250B sw8260B SW8260B SW826OB SW826OB SW8260B 06/09/08 12:44 litr 06/09108 12:44 I ilr 06/09108 12:44 I ilr 06/@/08 12:44 l)lr 06/09/0E 12:44 t jlr 06/09/08 12144 I jlr 06/09/08 12'.44 ljlt 06/09/08 12:M I itr 06/09/08 12:44 I jtr 06/09/08 12:44 t ilr 06/09108 12:M lik 06/09/08 12:44 tjlr 06/09/08 12i44 I ilr 06/09/08 12:44 t )lr 20 1.0 1.0 1.0 't.0 20 '1.0 1.0 1.0 1.0 80-120 70-1 30 8G120 80-120 t I T Report RL - Analyb reporting limit. Deffnitione: eCL- euality control limit, MDG - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. I EI{EBGY LABO1ATOBIE_5,-INC '2393 Satt Creek HEhway (82601) . PO. Box 3258 . Caspil WY82602 TollFree888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com . www.ehergylab.com I I I Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater /co8o6o2e2-002 /MW2 I/ Report Date: 07117108 Collection Date: 06/04/08 15:16 DateReceived: 06/06/08 Matrix: Aqueous Analysis Date, ByAnalyse3Result Units Qualifiers RL MCU QCL Method I I I I I t I I I I I T t T I MAJOR IONS Carbonate as CO3 p.icarbonate as HCO3 / Calcium / cntoriaeY Ftuoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nit,ite as N Potassium Sodium Sulfate /' PHYstcAL PRopERTIEs VpH Solids, Total Dissolved TDS @ 180 C METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium / CobaltI/ CopperI tron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc ND 373 326 v 0"3 95.0 ND ND 10.2 530 2000 1 1 0.52 1 0.1 0.50 0.05 0.05 0.50 3.8 30 0.01 10 mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L ND ug/L ND uS/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/LND uglL ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ugA ND ug/L 8.68 ug/LND ug/L ND ug/L 7.32 s.u. 3030 mg/L A2320 B 4232A B E200.7 A4500-Ct B 44500f c E200.7 E350.1 E353.2 E2A0.7 E200.7 A4500-SO4 E 44500-H B 42540 C 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 E200.7 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 06/09/08 13:12 t tjl 06/09/08 13:12 I lll 06/19/08 18:37 / cp 06/16/0E 10:43 / ljl 06/10/08 13:15 I ljl 06/19/08 18:37 I cp 06/.10/08 10:50 / eli-b 06117108 11:23 I eh-b 06/19/08 18:37 t cp 06/19/08 l8:37 / cp 06/11/08 l1:15 / sp 06/06/08 15:17 t )h 06/06/08 11:23 I dd 0612710816:46 I sml 0612710816:46 / sml 0612710816;46 / sml 06/19/08 18:37 / cp 06/19/08 1E:37 I cp 06127108 16:46 / sml 06/19/08 18:37 / cp ABl27lO816:46 / sml 06/19/08 '18:37 / cp 0612710816:46 / sml 4612710816:46 / sml 0612710816:46 / sml 0612710816:46 / sml 06127108 16:46 / sml AGn7n&16:46 / sml 06/19108 18'.37 I cp 06127108 15:46 / sml OGl27lO816:46 I sml 06/30/08 13:42 / sml 06/30/08 13:54 / cru 06/30/08 13:54/crw 06/30/08 13:54 / crw 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 RADIONUCLIDES . DTSSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC Report RL - Analyte reporting limit. Deflnftlong: eCL - euatity control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detec,ted at the reporting limit. D - RL increased due to sample matrix interference. 1.4 pCilL 0.4 pCi/L 0.4 pCi/L T EilERGY LABORATOilEA lNC. ' 2393 Salt Creek Hiqhway (82601) . P.O. &ox 3258 ' Casper. WY 82602 Toll Free 888.235.0515 , 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com ' www.energylab.com T I I Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Gorp 2nd Quarter Semi-Annu2l Groundwater c08060292-002 //MWz v Report Da!B: 07/'17108 Collection Date: 06/04i08 15:16 DateReceived: 06/06/08 Matrix: Aqueous Analysss Result Units Quallflers RL irlCU QCL Method Anarysis Date I By 10'l 93.0 10'l I I T T I I T I I I I T ./ Anions l/ cations DATAQUALITY A/C Balance (t 5) Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIG COMPOUNDS Aoetone Benzene Carbon tetrachlorilJe Chloroform Chloromethane Methyl ethyl ketone Mcthylene chloride Naphthalene Toluene Xylenes, Total Surr: 1 Su rc Dibromofl uoromethane Surr: p-Bomofl uorobcnzene Surn Toluen+d8 -0.564 o/o 48.0 meq/L 47.4 meq/L 3160 mg/l- 0.960 ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ugA ND ug/L ND ug/L ND ug/L ND ug/L 104 %REC Calculation Calculation Calculation Calculation Calculation sw8260B SW826OB sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B SW8260B SW826OB 06/20/08 15:53 / lab 06/20/08 15:53 / lab 06/20/08 15:53 / lab 0612UO815:53 / lab 06/20/08 15:53 / lab 06/09/08 13:19/jlr 06109/08 '13:19 / jlr 06/09/08 13:19/jlr 06/09/08 13:19/jlr 06/09/08 13:19 /ik 06/09/08 13:19/ilr 06/09/0E 13:19/jlr 06109/08 13:'t9 / jlr 06/09/08 13:19 /jlr 06/09/08 13:19 / jlr 06/09/08 13:19 /ilr 06/09/08 13:19/jlr ffi/09/08 13:19 / jlr 6/09/08 13:19/jlr %REC %REC %REC 2A 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 8G120 7G130 80.120 80-120 I I T Report RL -Analyb reporting limit. Ilefinitlom: eCL - euality controt timit. MDC - Minimum dctectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. I ENERGY LAAORATORIES, lNC. ' 2393 Salt Creek Highway (S26ot) , P.O. 1ox 3258 , Caspet W82602 Toll Free888.235.0515 , 307.235.0515 ' Fax 307.234.1639 , casper@energylab.com'ww.energylab.com I I T LABORATORY ANALYTIGAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-An nual Groundwater c08051285-Oo1 / MW 3 l/' Report Date: 07/07/08 Collection Date: 0528/08 08:30 DateReceived: 05/30/08 Matrix: Aqueous Analyseg Result Units Qualifiere RL MCUqCL ilethod Analysis Date / By /catcir/ chlorideV Ftuoride I I I T I T I I I I I I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate Fxvscel PRoPERTTES /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) U cross Alpha minus Rn & U MDC ND mg/L 364 mg/L 488 mg/L 64 mg/L 0.5 mg/L 247 mg/L ND mg/L 0.18 mg/L 222 mg/L 846 mg/L 3340 mg/L 6.71 s.u. 4800 mg/L 1.1 0.4 0.3 A2320 B A2320 B E200.7 44500-Ct B A4500-F C E200.7 E350.1 E353.2 E200.7 E,200.7 A4500-SO4 E 44500.H B A2540 C E200.8 E200.8 E200.8 8200.7 E200.7 E200.8 E200.7 E200,8 E240.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 e200.7 E200.8 E200.6 E200.8 E900.1 E900.1 E900.1 06/03/08 l3:59 / ljl 06/03/08 13:59 / ljl 06/09/08 19:45 / cp 06/06/08 15:21 lljl 06/04/08 13:42 t ljl 06/09/08 '19:15 I q 06/05/08 ffi:22 / eli-b 06/09/08 13i22 I eli-b 06/09/08 19:45 / cp 06/09/08 19:45 / cp 06/03/08 16:34 I sp 05/30/06 16:09 /jh 06/02/0809:18/dd 06/11/08 06:33 / sml 06111/08 06:33 / sml 06/11/08 06:33 / sml 06/09/08 19:45 / cp 06/09/08 19:45 / cp 06/1'll08 06:33 / sml 06/09/08 19:45 / cp 06111/08 06:33 / sml 06/09/08 19:45/cp 06/11/08 06:33 / sml 06/1 1/08 06:33 / sml 06/1 1/08 06:33 / sml 06/11/08 06:33 / sml 06/1 1/08 06:33 / sml 06/11/08 06:33 / sml 06/09/08 19:45 / cp 06111108 06:331sml 06/11/08 06:33 / sml 06/11/08 06:33 / sml 06/18108 12:13 I crw 06/18/08 12:13 I cnv 06/18/08 12:13 I crw 1 1 0.52 1 0.1 0.50 0.05 0.05 0.50 3.8 30 ND ug/L ND ug/L 0.52 ug/L ND ug/L ND ug/L ND ug/LND ug/L ND ug/L 810 uS/L ND ug/L ND udLND ug/L 2O.1 ug/L ND ug/L 0.86 ug/L ND ug/L 31.3 ug/LND ug/L19 udL 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 ,0 pCYL pCi/L pCi/L t T I Report RL - Analyte reporting limit. Definltions: eCL - euatity control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant lev6l. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interfercnce. t ENEncY LABORATOREA NC. . 2393 SaltCreek Highway(52601) . P,O, Box3258 ' Caspet WY82602 loll Free 888.235.0515 . 307.?J5.0515 . Fax 307,234.1609 ' casper@energylab.mm ' www.energylab.com t I t LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08051285-001 MW3 Report Date: 07/07/08 Collection DatE: 05/28/08 08:30 DateReceived: 05/30/08 Matrix: Aqueous Analyses Result Unlts Quallfiors RL MCU QCL Mothod Analysis Date / By oh meq/L meq/L mga t I I I t I I I I I I I -DATAQUALITY / Nc BatancE (t 5) U Anions Cations Solids, Total Dissolved Calculated TDS Balanoe (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: Dibromoffuoromethane Surr: pBromofluorobenzene Surr: Toluene.dB 3.00 77.3 82.0 51 90 0.920 Calculation Calculation Calculation Calculation Calculation sw6260B SWE26OB sw8260B sw8250B sw8260B sw8260B sw8260B sw8260B SWE26OB sw8260B swE260B sw8260B SW826OB sw82608 ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ugll ND ug/LNO ug/L ND ug/L 108 %REC 10s %REC 92.0 %REC 98.0 %REC 06/10/08 15:09 /jc 06/10/08 15:09 /jc 06/10/08 15:09/jc 06110/08 15:09/jc 06/10108 15:09 ljc 06/02/08 13:38/ jlr 06/0208 13:38 / jlr 06/02/08 13:38 /jlr 06/0208 13:38 / jlr 06/0208 13:38 / jlr 06/0208 13:38/jk 06/0208 13:38 / jlr 06/02/08 13:38/jlr 06/02/06 13:38 / jlr 06/02/08 13:38 / ilr 06/02/08 13:38 / jlr 06/02/08 13:38 / jlr 06/02/08 13:38 ljlr 06/0208 13:38 / jlr 20 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 T I I Report RL - AnaMe reporting limit. Definitions: eCL - euality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. t ENEECY LABORATOPIES, lNC. ' 2393 Sa/t Creek Highway (826011 . PO. Box 3258 . Caspet Wy 026CI2Totl Free 888.235.0515 ' 307.235.0s6 ; Fai eoi.iia.)ii7i' : r{{piideiiicli;-;"on . www.energytab.com I I I Client; Project: Lab lD: Client Sample lD LABORATORY ANALYTIGAL REPORT Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c0805128&002 MW3A Report Date: 07/07/08 Collection Date: 05/28108 09:35 DateReceived: 05/30/08 Matrix: Aqueous Analyses R€sult Units Qualifiers RL MCU QCL Merhod Analysis Date / ByI t I I T T t T T I T T MAJOR IONS Carbonate as CO3 Eicarbonate as HCO3 /catcium/ Chtoride / Fluoride Magnesium Nitrogen, Ammonia as N Nikogen, Nitrate+Nikite as Potassium Sodium Sulfate ND mg/L384 mg/L 496 mg/L 61 mg/L 1.0 mg/L 306 mg/L ND mg/L0.91 mg/L 28.6 mg/L827 mg/L 3550 mg/L 7.30 s.u. 5070 mg/L ND ug/L O.77 ug/L0.76 ug/LND ug/LND ug/LND ug/L ND ug/L ND ug/L64 ug/L ND ug/L ND ug/LND ug/L 73.4 ug/LND ug/L0.90 ug/L ND ug/L22.4 ug/LND ug/L U ug/L 423208 42320 B E200.7 A4500-ct B A4500-F C E200.7 E3s0.1 E3s3.2 E200.7 E200.7 A4500-so4 E 06i03/08 14:06 / [t 06/03/08 14:06 / tjt 06/09/08 19:49/cp 06/06/08 15:24 |jt 06/04/08 13:4s I tjt 05/09/08 19:49 / cp 06/05/08 08:26 / eti-b 06/09108 13:23 / eli-b 06/09108 19:49 / cp 06/09/08 19:49 / cp 06/03/08 16:38 / sp 06/11/08 06:40 I smt 06111108 06:40 / smt 06111108 06:40 / smt 06/09/08 19:49 / cp 06/09/08 19:49 I cp 06111108 06:40 / sml 06/09/08 19:49 / cp 06/1 1/08 06:40 / sml 06109/08 19:49 / cp 0611 1/08 06;40 / smt 06/11/08 06:40 / smt 06/11108 06:40 / smt 06111108 06:40 / smt 06/11/08 06:40 / smt 06/11108 06:40 / smt 06/09/08 19:49/ cp 06111108 06:40 / smt 06/1'll08 06:40 / smt 06/11108 06:40 / smt 06/18/08 12:13t ctw 06/18/08 12:13 t ctw 06/18/08 12:13 t crw 1 1 o.52 1 0.1 0.50 0.05 0.05 0.50 3.8 30 0.0, 10 5.0 0.50 0.50 25 10 10 30 1.0 ,0 0.50 10 20 5.0 10 0.50 100 0.30 15 10 PHYSICAL PROPERTIES pH Solids, Totat Dissolved TDS @ 180 C METALS. DISSOLVED 44500-H B 0s/30/08 16:16 /jh A2540 C 06/02/08 09:18/ dd Arsenic Beryllium ,/cadmium / Chromium / Cobalt / copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc E200.8 E200.8 E200.8 E2A0.7 E200.7 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U precision (r) Gross Alpha minus Rn & U MDC 1.l 0.4 0.3 pCi/L pCi/L pci/L t t t !.port RL - Anatyb reporting lamit.Definitlons: ecl - euatity control limit. MDC - Minimum detectiable concentration MCL - Maximum contaminanl level. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference T ENERGY LABOilATOREE _t4lg: .,239J satt creek Highway (s260t) . p.o. Bo.x SzsB , casper; wy 02602Toll Free 888.235.05t5 ' s07.235.0515 ' Fax 307.234.1639 ;"ca{peiaienerbytao.con , w,w.iiiirfiytao.coi- T T T Client: Project: Lab lD: Client Sample lD L.ABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundyaterc08051285-002 ,/ MW 3A ./V Report Date: O7l07/08 Collection Date: 05/28108 09:35 DateReceived: 05/30/08 Matrix: Aqueous Analyses Result Unlts Quallflers RL MCUQCL iiethod Analysls Date, By T t t I t I I t I T I I DATAQUALITY A/C Balance (t 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachlorirje Chloroform Chloromethane Methyl ehyl ketone Methylene chloride Naphthalene Ioluene Xylenes, Total Surr 1,2-Dichlorobenzene-d4 Sun: Dibromofl uoromethane Surr: p-Bromofl uorobenzene Sun: Toluene-d8 2.77 % 81.9 meq/L 86.6 meq/L 5460 mg/L 0.930 ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ugA ND ug/L ND ug/L ND ug/L ND Ug/L 109 %REC 115 %REC93.0 %REC100 %REC 20 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 Calculatlon Calculation Calculation Calculation Calculation SW826OB sw8260B sw8260B sw82608 sw82608 sw8260B sw8260B sw82608 sw8260B SW8260B sw8260B sw8260B sw8260B SW826OB 06/10/08 15:09/jc 06/10/08 15:09 /jc 06/1 0/0E 1 5:09 / jc 06/10108 15:09 /jc 06110/08 15:09/jc 46rc210814:13 I ilr Ml02l08 14:13 ljtr 06nA08 M:13 I jlr W0a08fi:13t jlr 06/02/08 14:,13 ljlr 06/0208 14:13 tjlr 06n2na fi13 t jtr 06/0208 14:13 I ilr 06/02/0E 14;'t3 t jtt 0610210814:13 t jlr 06/0208 14:13 ljtr 06/02/08 '14:13 t itr 06/02/08 11:13 I jlr 06/020E 14:13 t jk t t T Report Definitions: RL - Analyte reporting limit. QCL - Quality control timit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting timit. M ENERGY LABIBATOBIES, lNC. '2393 satt creek Highway (82601) 'PO' Box 3258 ', caspet wY82602 Toil Free 8B8.ZSi.05tS . s07ru;.'iitS-:-iai i:o|.isq. to:ie ;'ciiper<ienergvtab'con ' www'enersvtab'com Client: Project: Lab lD: Client SamPle lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) CorP 2nd Quarier Semi'Annual Groundwater c080s't285-004 MW4 RePort Date: 07107/08 Collection Date: 05/27108 15:05 DateReceived: 05/30i08 Matrix: Aqueous Result Units Oualifiers RL MCUOCL Method Analysis Date / By Analyses 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. DISSOLVEO 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 330 258 44 0.4 114 NO 6.50 6.64 82.6 832 7.20 1 5s0 ND ND ND ND ND ND ND ND ND ND ND ND 46.4 ND ND ND 9.10 ND ND 0.E 0.3 0.3 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 I 1 0.52 1 0.'l 0.50 0.05 0.05 0.50 3.8 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.s0 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 E200.6 E200.E E200.8 E200.8 E200.8 E200.8 E200-8 E200.8 E900.1 E900.1 E900.1 mg/L mg/L mg/L mgiL mgiL mg/L mg/L rng/L mg/L mg/L mg/L A2320 B A2320 B E200.7 A4500-cl B A4500-F C 8200.7 E350.1 E353.2 E240.7 E200.7 A4500-so4 E A45OO-H B 05/30/08 16:21 /ih A2540 C 06/02/08 09:19 /dd 06/03/08 14:37 I lil 06/03/08 14:31 I lil 06/16/08 16:05 / cP 06/06/08 15:33 / lil 06/04/08 13:51 / ljl 06/,l6/08 16:05 / cp 06/05/08 08:28 / eli-b 06/10/08 10:54 / eli-b 06/16/08 16:05 / cp 06/16i08 16:05 / cP 06/03/08 16:47 / sP 06il 1/08 06:54 / sml 06/11/08 06:54 / sml 06/11/08 06:54 / sml 06/11/08 06:54 / sml 06/11/08 06:54 / sml 06/11/08 06:54 / sml 06/09/08 20'.29 I cp 06/11/08 05:54 / sml 06/1 t/08 06:54 / sml 06/11/08 06:54 i sml 06/1 1/08 06:54 / sml 06/11/08 06:54 / sml 06/11/08 06:54 / sml 06/1 1i08 06:54 / sml 06/1 1/08 06:54 / sml 06/1 1/08 06:54 / sml 06/1 1/08 06:54 / sml 06/1 1/08 06:54 / sml 06/11/08 06:54 / sml 06/18/08 12:13 I c$,r 06/18/08 12:13 / crw 06/18/08 12:13 / cnil pCiiL pCi/L pCi/L RL - Analyte rePorting limit. QCL - Quality control limit. MDC - Minimum detectable concentation MCL - Maximum contaminant level ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference M ENERG. LABOIATOBIES, tNC. . Zggg Salr Creek Highway (82601) ' P.O. BLx 3255 ' Caspe, W 82602 fol Free slg.2g5.0st5 . J072i;.'iirc-:-iai iOi.zat. tOSi i'casper(itenergytab'com ' www'energylab'com Client: Project: Lab ID: Client SamPle lD LABORATORY ANALYTIGAL REPORT Denison Mines (USA) CorP 2nd Ouarter Semi'Annual Groundwater c08051285-004 MW4 RePort Datel 07/07/08 Collection Dale: 05127108 15:05 DateReceived: 05/30/08 Matrix: Aqueous Result Units Qualifiers RL MCUQcL Method Analysis Date / BY Analyses DATA QUALITY tuC Balance (* 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetlachloride Chloroform Chloromethane Methyl ethYl ketone Methylene chlolide Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene'd4 Sun: Dibromofl uotomethane Su rr: p-Bromofluorobenzene Surr: Toluen€-d8 3.07 24.5 26.0 1 540 '1.01 ND ND 1.9 2500 ND ND ND ND ND ND 108 110 102 96.0 o/o meq/L meq/L mg/L Calculation Calculation Calculation Calculation Calculation sw8260B sw82608 SW826OB sw8260B SW826OB SW826OB SW8260B SW826OB SW8260B SW8260B sw8260B SW826OB sw8260B sw8260B 06/1 9/08 09:55 i sw 06/1 9/08 09:55 / sw 06/19/08 09:55 i sw 06/19/08 09:55 / sw 06/19/08 09:55 / sw 06/05/08 03:44 / dkh 06i06/08 03:44 / dkh 06/06/08 03:44 / dkh 06/06/08 04:23 I dkh 06/06/08 03:44 / dkh 06/06/08 03:44 / dkh 06/06108 03:44 / dkh 06106/08 03:44 / dkh. 06/06/08 03:44 I dkh 06/06/08 03:44 / dkh 06/06/08 03:44 / dkh 06/06/08 03:44 / dkh 06/06/08 03:44 / dkh 06/06/08 03:44 / dkh ug/L ugiL ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L %REC %REC %REC o/oREC 20 1.0 1.0 100 1.0 2A 1.0 1.0 1,0 1.0 80-'120 70-1 30 80-1 20 80-1 20 Report RL - Analyte reporting limit. Definitions: QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference I EiiF#f{,ti?,?Ef{?trF,:t!{,?;ry'i,:![9:;i! il#.:X|,tr3;'i;E,E:ii# -"f'fitri;ff'Xfi' I I Glient: Project: Lab lD: Client SamPle lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) CorP 2nd Quarter Semi-Annual Gro2dwater c08061004'001 /MW5 / RePortDate: ATnTnB Collection Date: 06/18/08 09:52 DateReceived: 06120/08 Matrix: Aqueous I MCUQCL tltethod Analysls Date I BYResult Units Qualifiers RL Analy3es I I I I I I I I I I t I MAJOR IONS Carbonate as CO3 /Bicahondeas HCo3 / c"l"iu, V Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate i pnvstclt PRoPERTIES /pa' solid., 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 Zi'l.c X.aorouuct-lDEs - DlssoLVED / Gross AlPha minus Rn & U / Gross elpna minus Rn & U Precision (t) / Gross Atpha minus Rn & U MDc ND 357 135 50 0.9 38.0 0.51 ND 7.5 503 1090 1 1 0.5 1 0.1 0.5 0.05 0.05 0.5 4 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 mg/L mglL mglL mg/L mSlL mg/L mdL mg/L mdL mg/L mg/L A2g2O B 6/26i08 10:23 / lil A2320 B 06/26/08 10:23 / ljl E2OO.7 07/08/08 '19:33 / cP A4500-Cl B 05/26/08 t5:46 / ljl A4500-F C 06/25108 14:09 / [l E200.7 07/08/08 19:33 / cP E350.1 07/09/08 10:s7 / eli-b E353.2 07103/0E 10:05 / eli-b E2OO.7 O7l08/0E'19:33 / cP Ezcf,,.T 07/08/08 19:33 / cP A45OO-SO4 E 06/25108 15:53 I sP A45OGH B 06/23/08 11:50 /ih A2540 C 06/23/08 15:15 / dd7.65 s.u' t900 mg/L ND uglL ND ug/L ND ug/L ND USIL ND ug/L ND ug/L 84 ug/L ND udL 258 ug/L ND us/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 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 e200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 F-200.7 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 0711710817:07 /ts 071fin817:07 / ts 07n7n817:07 / ts O?117t9817107 / ts O7l08/08 19:33 / cP O7t1tl08'17107 l13 07/08/08 19:33 I cP 0711710817:07 / ts 07/0808 19:33 / cP 07l17l08'17:07 / ts 07t1710817:07 / ts 0711710817:07 / ts O7nTn$17:07 / ts O7t17t0817:07 / ts 0711710817:07 / ts O7l08/08 19:33 / cP 07t1710817:07 / ts 07ll7l1g 17:07 / ts 07l17nA 17:07 I ts O7l08/08 17'.52 t cN O7l08/08 17:52 I cr'tt O7l08/08 17:52 I *tt 1.2 0.4 0.4 pCi/L pCi/L pCilL I I I Report RL - Analyb reporting limit' Deflnltions: QCL - Quality control limit. MDC' Minimum detoctable @ncentration MCL - Maximum contaminant l6vel' ND - Not detected at the reporting limit' D - RL incraased due to sample matrix interfefence' I fiiF#f{,t2i,?Ef{?tr5":i,!!fi;,".'f,:i#:;il i;9!.:"1!,"3i3;,i;E E?:#1.'i;:f:",ffi21f1' LABORATORY ANALYTICAL REPORTI I Client: Project: Lab lD: Glient SamPle lD Denison Mines (USA) CorP 2nd Quarter Semi-Annual Grt c0806100+001 MW5 Report Da''r; a7Q7lO8 Collection Date: 06/18/08 09:52 DateReceived: 06/20/08 Matrix: Aqueous I MCU QCL Method Analysis Date I BYResult Unlts Quallflers RL Analyses I I I I I I I I I I I I I I I DATAQUALIW A/C Balance (t 5) 3'15 % Anions 30.0 meq/L cations 32.0 meq/L iotio., fot"t Dissolved Calculated 2000 mg/L TDS Balance (0.80 ' 1.20) 0'950 VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 Benzene No ug/L 1'o Carbon tetrachloride ND ug/L 1'0 Chloroform ND ugA 1 0 chloromethane ND ug/L 1'o Metryl ethYl ketone ND ug/L 20 Metrylene chloride ND ug/L 1'o Naphthalene ND ug/L 1'o Toluene ND ug/L 1'0 Xylenes, Total ND ug/L t '0 Sun:1,2-Dichlorobenzene'd4 119 o/oREC 8s'120 surn Dibromofluoro*"tt]nl 136 o/oREC s 7G130 sun: pBromofluoroo"n,lnl 109- %REc 80-120 Surr: Toluene-d8 94'O %REC 8G120 .FailinglsTorasPonge(g)..ThisanalFishasbe€ncofllirmedthrough$eanalysisofanalternatogamplevial. Calculation Calculation Calculation Calculation Calculation sw8260B SW8260B sw82608 sw82608 SWE26OB SW826OB SW8260B SW826OB SW826OB SW82608 sw8260B sw8250B SW826OB SW826OB 07111N815:18 / sw o7nlng t5:18 / sw A7n1n815:181sw 0711110815:18 / sw 07n1n815:18 / sw 06/23/08 15:03 / dkh OOl23/08 15:03 / dkh 06/23/08 15:03 / dkh 06/23/08 15:03 / dkh 06/23/08 t5:03 / dkh 06/23/08 15:03 / dkh 06/23/08 15:03 / dkh O6/2UOB 15:03 / dkh OOl23/08 15:03 / dkh 06123/08 15:03 / dkh 06/23/08 15:03 / dkh O5l2U08 15:03 / dkh 06/23/08 15:03 /dkh 06123108 15:03 / dkh Report RL - Analyte reporting limit' Deffnitions: QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum @ntaminant level' ND - Not detected at ths reporting limit' S - Spike recovery outside of advisory limits' I f,fF*!{,itr'Ef{?trff;i!f;;,'W'ii95;[f;g!-:[S'ii3i,i;3,81ii,1'#.-'.iiii[,f,J!f'tr' I I Client: Project: Lab lD: Client SamPle lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) CorP 2nd Quarter Semi-Annual Groundwaler ,/c08061004-002 / MW 11 l/ RePort Date: 07127/08 Collection Date: 06116/08 14:38 DateReceived: 06/20/08 Matrix Aqueous I MCUOCL Mothod Analysis Date / ByResult Units Qualiflers RLAnalyses pCilL pCi/L pCi/L I I I I I I T 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 Sulfato PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ 180 C METALS. DISSOLVED Ars€nic 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/L 356 mg/L 40.8 mg/L 30 mg/L 0.5 mdL 10.7 mg/L 0.53 mglL ND mg/L 6.1 mglL 632 mg/L 1050 mg/L 7.87 s.u. 1790 mg/L ND ug/L ND ug/L ND uS/L ND ug/L ND udl ND ug/L 112 ug/L ND uglL 74 ug/L ND ug/L ND ug/L NO ug/L ND ugiL ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L I 1 0.5 1 0.1 0.5 0.05 0,05 0.5 4 30 0.01 10 5.0 0.50 0.50 25 10 10 30 1.0 10 0.s0 10 20 5.0 10 0.50 100 0.30 15 10 A2320 B 06/26/08 10:30 / lil A2320 B 06/26/08 10:30 / lil E200.7 07/08/08 19:37 / cP A4500-Cl B 06/26106 15:48 / ljt A4500-F C 06125/08 14:18 / Il E2OO.7 07/08/08 19:37 / cP E350.1 07/09108 11:00/elFb E353.2 07/03/08 10:07 / eli-b E2OO.7 07/0U08 19:37 I cP e2OO.7 07108/08 19:37, cP A4500-SO4 E 06/25/08 15:58 / sP A45Oo.H B 06123/08 11:51 /ih A2540 C 06123/08 09:47 / dd 1.4 0.5 o.4 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 0711710817:14 / ts 07117t0817:14 / ts 071171o817:14 I ls 0711710817:14 / ts 07/08/08 19:37 / cP 0711110817"14 I ts 07/08/08 19:37 / cP 0711710817:14 / ts 07/08/08 19:37 / cP 0711710817:14 / ts 07n7n817:14 I ls 07117108 17:'14 lls 07117108 17:14 I ls O7l17lO8'17114 lts O7n7rc817:14 / ts 07/08/08 19:37 / cP 0711710817:14 I ts 07117108',17'.14 I ts 0711710817:14 / ts 07/08/08 17:521 cu't 07/08/08 17:521 crtt 07108/08 17t52 I cNr I I I Report RL ' Analyte reporting limit' Definitloffi: eCL-Qualityconttol limit' MDC - Minimum d€tectable concentration MCL - Maximum contaminant level' ND - Not detected at the reporting limit' D - RL increased due to sample matrix interference I ENERO7 LABO1ATOR1ES, lNC. . 2393 Salt Creek Highway (5260t) ' P.O. 9o.x 3258 ' Casper WY 82602 riiFiiiaaaies.oiti : soTZei.*sti . Fax s07.234.rc3e ,'cisper@energylao.com 'www'energylab.com I I Client: Project: Lab lD: Client Sample lD LABOMTORY ANALYTICAL REPORT Denison Mines (USA) CorP 2nd Quarter Semi-Annual Groundwater ,/co8o61oo4-oo2 /MW1l V Report Date: 07127108 Collection Date: 06/16/08 14:38 DateReceived: 06/20/08 Matrix: Aqueous I MCUQCL rnethod Analysls Date / ByResult Units Quallflers RLAmlyses I I I I I I I I I I I I I I I DATAOUAUTY A/C Balance (t 5) Anions /c^tion l/ sotia",Total Dissotued calculated TDS Balanct (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone ilnzare A"rwntetrachloride . ,/ cntorotormv chloromethane Methyl ethYl ketone MethYlene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2'Dichlorobenzene-d4 Surr: Dibromofl uoromethane Sun: PBromofl uorobenzene Sun: Toluen+d8 3.64 o/o 28.5 meq/L 30.6 meqlL 1950 mg/L 0.920 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 uS/L ND ug/L 113 ToREC 116 %REC 107 %REC 94.0 %REC 20 1.0 1.0 1.0 't.0 20 1.0 '1.0 1.0 1.0 B0-120 70-130 80-120 80-120 Calculation Galculation Calculation Calculation Calculation sw82608 sw8260B sw8260B sw8260B SW826OB sw8260B swE260B sw6260B sw8260B sw8250B SW8260B sw8260B sw8260B SW8260B 0711110815:'19 / sw A7n1n815:19 / sw 07/11O8 15:19 I sw 0711110815:19 / sw 07n1n815:19 / sw 06/23108 15:41 /dkh 06/23/08 15:4'l / dkh 06/23/08 15:41 / dkh 06/23/08 15:41 / dkh 06/23/08 15:41 / dkh 06/23/08 15:41 / dkh 06/23/08 15:41 /dkh 06123/08 15:41 / dkh 06/23/08 15:41 ldkh 06/23/08 15:41 /dkh 06/23/08 15:41 / dkh 06DA10815:41 /dkh 06/23108 15:41 / dkh 06/23108 15:41 / dkh Report RL - Analyte reporting limit' Definitlonc: eCL - Quality conkol limit. MDC - Minimum deteclable concentration MCL - Maximum contaminant lovel' ND - Not detected at the reporting lim'lt' I ENERGY LABOBATORIES, lNC. ' 2393 Satt Creek Highway (s260t) ' Po. 1o.x 3258 ' casper w 82602 TottFree d8l.2i5.0sti . s07:iii.'o*s-: iai eoz.zga.tibg '-cisper@energy'ab.nm 'www,energytab.com LABORATORY ANALYTICAL REPORTI I I Client: Project: Lab lD: Client SamPle lD Denison Mines (USA) CorP ./ 2nd Quarter Semi-Annual Groundwayd co8o61oo4-003 /MW12 V RePort Date: 07127108 Gollection Date: 061't7/08 13:35 DateReceived: 06i20/08 Matrix: Aqueous Result Unlts OualiflBrs RL MCUOCL Mothod Analysis Date / By Analy3€8 pCi/L pCVL pCi/L I I I I t t I I I I I I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 .6alcium/ cnorioe / Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nikite as N ND mSA 399 mS/L 525 mg/L 54 mg/L 0.3 mg/L 2O7 mg/L ND mg/L 0.10 mg/L 13.0 mgA 300 mg/L 2270 mglL 7.08 6.u. 3530 mg/L ND ug/L ND ug/L ND ug/L ND UYL ND ug/L ND ug/L ND ug/L ND udL 32 ug/L ND ug/L ND ug/L ND ug/L 7.9 udl ND ug/L ND ug/L ND ug/L 16.7 udLND ug/L ND ug/L 1.2 0.4 0.4 42320 B A2320 B E200.7 A4500-cl B A,1500-F C E200.7 E350.1 E353.2 8200.7 E200.7 A4500-so4 E 06/26/08 10:37 / ljl 06/26/08 10:37 / ljl 07/08/08 19:53 / cp 06/26/08 15:51 / ljl 06/25/0E 14i24 lltt 07/08/08 19:53 / cP 07/09/0E 11:01 / eli-b 07/03/08 10:0E / eli-b 07/08/08 19:53 / cP 07/08/08 19:53 / cP 05n5n816:07 / sP 07117108'17:21 tts 0711710817:21 / ts 0711710817:21 / ts 07117108 17:21 lls 07/08/08 19:53 / cP O7n7nA17:2'l lls 07/08/08 19:53 / cP 07117108'17:21 / ts 07/08rc8 19:53 / cP Oll17l0E 17:21 lls 07117108 17'.21 lls A7n7n817:21 I ls 0711710817:21 / ts 07117108 17:21 tls 07111108 17'.21 lts 07/08/08 19:53 / cP 0711710817'.21 I ls 07l17l0E 17i21 I ts AT(T|OA 17:.21 I ts 07108/08 17'.52 I cwv 07/08/08 17:52 I cwt 07/08/08 17:52 I c.w 1 I 0.5 1 0.1 0.5 0.05 0.05 0.5 4 30 0.01 10 5.0 0.50 0.50 25 10 10 30 1.0 't0 0.50 10 20 5.0 10 0.s0 100 0.30 't5 10 Potassium Sodium Solids, Total Dissolved TDS @ 1E0 C METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lmn Lead Manganes€ Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium zjnc RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC A4500-H B 06/23/08 11:54/lh A2540 C 06/23108 09:47 / dd E200.8 E200.8 E200.8 E200.8 E2A0.7 E200,8 E200.7 E200.8 E200.7 E200.E E200.6 E200.8 E200.8 E200.8 E200.8 E240.7 E200.8 E200.8 E200.8 E900.'l E900.1 E900.1 I I I Report RL - Anatyte teporting limit' Definltlons: QCL - Quality control limit' MDC - Minimum detectable concentration MCL - Maxirnrm contaminant bvel. ND - Not detecled at the reporting limit' D - RL increased due to sample matrix interference I ENEAGY LABORA\OnES, lNC. . 2393 Satt Creek Highway (82601) ' P.O, Box 3258 ' Caspec WY 82602 rott rree gea.zas.osff a 307.235.0515 , Fax 307.234.1639 ' casper@energylab.com ' www.energylab.com I.ABOMTORY ANALYTICAL REPORTI I Client: Project: Lab lD: Client Sample lD Denison Mines (USA) CorP 2nd Quarter Semi-Annual Groundwater c08061004-003 MW 12 Report Date: Gollection Date: DateReceived: Matrix: 07t2710s 06/17108 13:35 06/20/08 Aqueous I Result Units Qualifiers RL MCUQCL Method Analyeis Date / ByAnalyses t I I I I I T I I I I I DATAQUALITY A/C Balance (i 5) Anions Cations Solids, Total DisEolved Calculated TDS Balance (0.E0 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chlo,omethans Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlotobenzened4 Surr: Dibromofluoromethano Surr: p-Bromofl uorobenzene Surr: ToluensdS 1.20 0h 55.3 meq/L 56.6 meq/L 3580 mg/L 0.990 ND ug/LND ug/L ND ug/L ND ug/LND ugAND ug/L ND ug/LND ug/L ND udL NO ug/L114 %REC 112 o/oREC 110 o/oREC 94.0 o/oREC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 't.0 80-120 70-1 30 80-120 80-120 Calculation Calculation Calculation Calculation Calculation sw8260B SW826OB sw8260B sw8260B SW826OB sw8260B SW8260B sw8260B sw8260B SW8260B sw8260B sw8260B SW82608 SW826OB 07n1n815:191sw 07111108 15:19 / sw 0711'110815:19 / sw 0711110815:19 / sw 07111108 15:',l9 / sw 06/23/06 16:20 / dkh 06/23/08 16:20 / dkh 06/23/08 16:20 / dkh 06/2U08 '16:20 / dkh 06/23l0E 16:20 / dkh 06123/08 16:20 / dkh 0612308 16:20 / dkh 0612108 16:20 / dkh 06/23/08 t6:20 / dkh 06/23108 16:20 / dkh 06/23/08 16:20 / dkh 06/23108 16:20 / dkh 06/23/08 16:20 / dkh 06/23/08 16:20 / dkh I I I Repott RL ' Analyte reporiing limit. Deftnltlons: QCL - Quality control limit. MDC - Minimum detec{able concentration MCL - Maximum contaminant level' ND - Not detec,ted at the reporting limit. I ENEEGY LABORATORIES, tNC. '2393 Salt Creek HEhway (8260t) 'P'O. 1o.x 3258 ' Casper W 8-2-602 nit rree osa.zgg.1,lf . 307.235.0515 . Fax 307.234.1639 ' casper@energylab.com 'www.energyaD.com I I Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) CorP 2nd Quarter Semi-Annual Grovndwaler ,,/c08061004-004 /MW14 V Report Datez O7l27lAB Cotlection Date: 06/18/08 12:13 DateReceived: 06/20/08 Matrix: Aqueous I Result Unlts Qualiflers RL MCU QCL Method Analysis DaG / ByAnalyses t I I I I I I I I I I I I I t MA.'OR 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 copp€r lron Lsad Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc MDIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gros6 Alpha minus Rn & U Precision (t) Gross Aloha minus Rn & U MDC ND 440 527 18 0.2 152 ND ND 12.2 359 ?200 6.88 3620 ND ND 0.91 ND ND ND ND ND 2290 NO ND ND ND ND ND ND 61.3 ND 14 1.1 0,4 0.4 3.U. mglL ug/L ug/L ug/L ug/L udL ug/L ug/L uglL uglL uga ug/L ug/L ug/L ug/L uglL ug/L ug/L uglL ug/L 1 1 0.5 1 0.1 0.5 0.05 0.05 0.5 4 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 E200.7 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 mg/L mg/L mg/L mdL mg/L mg/L mg/L mg/L mg/L mg/L mg/L A23208 A2320 B E,:oo.7 A4500-clB A4500-F C E200.7 E350.1 E353.2 e200.7 E200.7 A4500-so4 E A4sOO-H B 06/23/08 'l 1:55 / jh A2540 C OGl23l08 09:47 / dd 06/26,118 10:58 / ljl 06/26/08 10:58 / lil 07/08/OE 20:05 / cp 06125/08 15:55 / ljl 06/25108 14:29 I lil 07/08/0E 20:05 / cP 07/09108 11 :02 / eli-b 07/03/08 10:09 / eli'b 07/08/08 20:05 / cP 07/08/08 20:05 / cP 06/25108 16:11 / sP 07t17108 17:27 lls 0711710817127 lls a7n7n817"27 I ts O7l17n8 fl:27 I ts 07/08/08 20:05 / cP 0711710817:27 I ls 07/08/08 20:05 / cP 07117t08 17"27 I ts 07/08/08 20:05 / cP 0711710817t27 I ls 07117108 17t27 lts 07117108 17i27 I ls 07n7rc$17:27 I ts 0711710817:27 I ls 07117108 17:27 lls 07/08/08 20:05 / cP 0711710817:27 t ls O7l17lOB 17:27 lts 07117108 17:27 lls 07/08/08 19:41 / crw 07/0U08 19;41 / crw 07/08/08 19'.41 I crw pCi/L pCilL pCi/L Report RL ' Analyte reporting limit' Doflnltlons: QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level' ND - Not detected at the reporting limlt. D - RL increased due to sample matrix interferen@' I ENEnGf LABOBATORIES, lNC. . 2393 Satt Creek Highway (5260U ' PO. Box 3258 ' Caspet WY 82602 fojiFiiiaaa.-ieg"Oo/i . 90-7295.05/5 . Fax 307.234./639 ' casper@energytab.com'www.energylab.com I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) CorP 2nd Quarter Semi-Annual Groundwater c08061004-004 MW 14 Report Date: ColleeUon Date: DateRecelved: Matrlx: 07l2llo8 06/18/08 12:13 06/20/08 Aqueous I Result Unlts Qualifiers RL MCU QCL Method Analysis Date / ByAmlyses I I I I I I I I I T I I DATAQUALITY A/C Balance (r 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tekachlorkJe Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzened4 Surr: Dibromofl uoromethane Surr: p-Bromofl uorobenzene Sun: Toluene-dB 1.08 53.6 54,7 3490 1.04 ND ND ND ND ND ND ND ND ND NO 118 141 112 96.0 0/6 meq/L medL mg/L Calculation calculation Calculation Calculation Calculation SW826OB SW8260B sw8260B sw8260B SW826OB sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B SW82608 sw8260B sw82608 O7n1n815:19 / sw A711110815:19 / sw 0711110815:19 / sw 07/1 1/08 15:19 / sw 0711110815:19 / sw 06/23/08 16:59 / dkh 06/23108 16:59 / dkh 06123/08 16:59 / dkh 06/23/08 t6:59 / dkh 06/23/08 16:59 / dkh 06123/08 16;59 / dkh 06123/0E 16:59 / dkh 0623/08 16:59 I dkh 06123/08 16:59 / dkh 06/23/08 16:59 / dkh 0623nC8 16:59 / dkh 06/23/08 16:59 / dkh 06/23/08 16:59 / dkh 06/23/08 16;59 / dkh ug/L uS/L ug/L ug/L ug/L ug/L ug/L udL uS/L udL %REC %REC o/oREC o/oREC 2A 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-130 80-120 80-l 20 I I I Report RL - Analyte reporting lirnit' Detinitlons: QCL - Quality conkol limit. MDC - Minimum detectable concontration MCL - Maximum contaminant levsl' ND - Not detected at the reporting limit. S - Spike reoovery outside of advisory limits I ENEncY LABonAToHElr, INC ' 2393 satt creek Highway (sz60t) , p.o. Box 3258 . caswr wgz60p Toll Free 888.235.0515 ' 307.235.0515 ' Fax 302254. /639 , casper@energylab.con . www.eiergytaO.cbi I I I Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater ,/ c08061004-005 / MW15 / Report Date: 07127108 Collection DaiE: 06/18/08 14:40 DateReceived: 06/20/08 Matrix: Aqueous Analyses R$ult Units Qualifiers RL MCUOCL Method Analysis Date / By D D mg/L mdL m/L m/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L pCi/L pCi/L pCi/L I I I t I I I T I I I I I I I MAJOR IONS Cabonate as CO3 dicarbonate as HCo3 /crt"iu / cnurioe / Fluoride Magnesium Nitrogen. Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate ND 415 u4 37 0.2 158 ND 0.15 10.4 520 2400 6.99 3680 ND ND ND ND ND ND ND ND ND ND ND ND 106 ND ND ND 43.9 ND ND 1.',| o.4 0.4 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 udL ug/L ug/L ug/L ug/L ug/L 1 1 0.5 1 0.1 0.5 0.05 0.05 0.5 4 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 42320 I Aa32OB E200.7 A4500-Cl B A4500-F C Ez00..7 E350.1 E353.2 E204.7 E200.7 A4500-SO4 E E200.8 E200.8 E200.8 E200.8 E200.7 E200.E E200.7 E200.8 E200.7 E200.8 E200.8 E200,8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 06/26/08 11:06 / ljl 06/26/08 11:06/ljl 07/08/08 20:13 I q 06/26/08 15:59 / lil 06/25108 14:31 tljt 07/08/08 20:13 I q 07109/08 11 :03 / eli-b 0714310810:10 / eli-b 07/08/08 20:13 / cp 0710E10820:13 t q 06/25/08 16:23 / sp 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 A4500-H B 06123108 1'l 57 I lh 42il0 C 06/23108 09:47 t dd / RADTONUCLTDES - DTSSOLVED / cross Alpha minus Rn & U / Gross Alpha minus Rn & U Prccision (t) V Gross Alpha minus Rn & U MDC 07fi7n9 17t34 lls 0711710817:34 I ts 07117108 17:34 / ts OTl17l08 17:34 / ts 07/08/08 2O:.13 I ca 07l17nl 17:il lls 07108/08 2O:13 I cp 0711710817:34 / ts 07/08/08 20:13 / cp 0711710817:34 / ts 07117108 17:34 / ts 07117108 17:!4 I ts 071'1710817:34 / ts 07117t08 17:34 / ts 07117t08 17:34 / ts 07/08/08 20:13 / cp O7l17lO8 17:34 / ts O7l17lOB 17:M lts A7l17lOA 17:34 / ts 07lOBl08 19:41 / crw O7nAnO 19:41 / cnrv 07/0808 19:41 / crw Report RL - Analyte reporting limit. Dellnitlons: eCL - euatig conhol limit. MDC - Minimum detecteble concontralion MCL - Maximum contaminant level. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference. T ENEflCY LABORATORIES, INC '2393 Salt Creek Highway (52601) . PO. Box 32i8 , Casper WAp602 Toll Free 888.235.0515 ' 307,235.05t5 ' Fax 307.234.1639 ,"cisperAienergyEi.com 'www,ehergytab.coi- I I I LABORATORY ANALYTICAL REPO RT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08061004-005 MW 15 Report OaE: 07127108 collecfion Date: 06/18/08 14:40 DateRecelved : 06120198 Matrix: Aqueous Analyses Result Unlts Qualifierc RL MCUQCL Method Analpis Date / By I I I I I I I t I I I I DATAOUALITY A,/C Balance (t 5) Anions Gations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNOS Acetone Benzene Carbon tekachlorfuJe Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Oichlorobenzened4 Surr: Dibromofl uoromethane Surr: p-Bromofl uorobenzene Sun: Toluene-d8 0.204 % 57.9 meq/L 58.1 meq/L 3790 mg/L 0.970 ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND uS/L ND udL ND ug/L ND ug/L 115 o/oREC 125 %REC 112 %REC 94.0 %REC Calculation Calculation Calculation Calculation Calculation SW826OB sw8260B SW8260B sw8260B SW826OB SWE26OB SW826OB sw82608 sw82608 sw8260B SW826OB sw8260B SW82608 SW826OB 0711110815:19 / sw 07111n815:19 / sw 0711110815:19 / sw 07111108 15:19 / sw 07111108 15:19 1 srrv 06/23108 17:38 / dkh 06/23/08 17:38 / dkh 06/23/08 17:38 / dkh 06/23/08 17:38 / dkh 06/23108 17:38 / dkh 06/23108 17:38 / dkh 05/23108 17:38 / dkh 06/23/08 17:38 / dkh 06/23108 17:38 / dkh @12310817:38 / dkh 06/23O8 17i38 / dkh 06/23/OA 17:38 / dkh 06/23108 17:38 / dkh 06/23/08 17:38 / dkh 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 80-1 20 I I I Report RL - Analyte reporting limit. Definitions: eCL - euality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not deteGled at the reporting limit. I ENEBcf LABO4A\ORES, tNC. . 2393 Salt Creek Highway (52601) ' P.O. aox 3258 ' Casper W82602 Tol Free 888.235.0515 . 307.*5.0515 - Fax 307.234.1639 , 'casper@energylab.com ' www.energylab.com I I I Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp /2nd Quarter Semi-Annual Groundwater /co8o5128s-Oo8 t /MW17 V Report Date: 07/07108 Collection Date: 05/28/08 14:40 DateReceived: 05/30/08 Matrix: Aqueous Analyses R$ult Units Oualifierc RL MCU QCL Method Analysis Date / By 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+Nikite as N Potassium Sodium Sulfate PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ 180 C ND 474 386 32 0.3 188 ND 0.50 12.4 648 25/'0 1 1 0.52 1 0.1 0.50 0.05 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 mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/t mg/L mg/L mg/L 42320 B A2320 B E200.7 A4500-cl B A4500-F C E200.7 E350.1 E353.2 E200.7 Ez00..7 A4500-SO4 E A4500-H B 05/30108 16:33/jh A254A C 06/02/08 09:20 /dd 06/03/08 15:05 / ljl 06/03/08 15:05 / ljl 06/09108 20:50 / cp 06/09108 13:30 / ljl 06/04/08 14:11 I ljl 06/09/08 20:50 / cp 06il05/08 08:32 / eli-b 06/09/08 13:15 / eli-b 06/09/08 20:50 / cp 06/09/08 20:50 / cp 06/04/08 10:16 / sp 06/11/08 07:41 / sml 06/11/08 07:41 / sml 06/11108 07:41 / sml 06/11108 07:41 / sml 06/11108 07:41 / sml 06/11/08 07:4'l / sml 06/09/08 20:50 / cp 06/11/08 07:41 / sml 06109/08 20:50 / cp 06/11/08 07:41 / sml 06/11/08 07:41 / sml 06/11/08 07:41 / sml 06/1 1/08 07:41 / sml 06/11/08 07:41 / sml 06/11/08 07:41 / sml 0611 1/08 07:41 / sml 06/11108 07:41 / sml 06/1 1i08 07:41 I sml 06/1 1/08 07:4'l I sml 06/181/08 13:51 / cniv 06/18/08 13:51 /crw 06/18/08 13:51 / cnv METALS - DISSOLVEO Arsenic Beryllium Cadmium Chromium Cobalt Copper t,Pn Lead /M"ngrn"r"l/ Mercurvv lrtotyuu*r, Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc 7.29 s.u. 4030 mg/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L NO ug/L 108 uS/L ND ug/L ND ugL ND udL 7.8 udl ND ug/L ND ug/L ND ug/L 29.4 ug/LND ug/L ND ug/L 0.9 0.3 0.3 E200.8 E200.8 E200.8 E200.8 E200.8 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 E200.8 E900.1 E900,1 E900.1 RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC pCi/L pCi/L pCi/L T T I Report Deftnltions: RL - Analyte reporting limit. QCL - Quality confol limil. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference. I ENERcy LABORATO1ES, lNC. . 23gg Salt Creek HEhway (52601) ' PO. Bo.x 3258 ' Caspet WY 82602 filiFiiiAaA.ZSg.lStt , 907,fi5.0515 . Fax 307.234.1639 ' casper@energylab.com ' wtru'energylab.com I t I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) CorP 2nd Quarter SemFAn nual Groundwater c08051285-008 MW 17 Repoil Date: Collection Date: DateRecelved: Matrix: 07t07t08 0512810814:40 05/30/08 Aqueous Result Units Qualifiers RL MCU QCL Method Analysis Date I ByAnelysesI I I t I I I I I I I I t I I DATA QUALITY A/C Balance (n 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0-80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Molhyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzened4 Surr: Dibromofl uoromethane Surr: p-Bromolluorobenzene Sun: Toluen+d8 1.31 61.6 63.2 4050 1.00 ND ND ND ND ND ND ND ND ND ND 110 109 94.0 98.0 o/o meq/L msq/L mg/L Calculation Calculation Calculation Calculation Calculation SW826OB SW8260B SW82608 swE260B SW8260B sw8260B SW826OB sw8260B sw8260B sw8260B sw8260B SW826OB sw8260B sw8260B 06/10108 15:10 t ic 06/10/08 15:10 /jc 06110/08 15:10 /jc 06/10/08 15:10 / jc 06/10/08 15:10 /jc 06/0208 15:59 / jlt 06/02m8 15:59 / ilr 06/0208 15:59 / jlr 06/02/06 15:5s /ilr 06/02,08 15:59 / jlr 06/02/08 15:59 / ilr 06102!0815:59 / jlr 06/0208 15:59 / jlr 06/02|/08 15:59 / jlr 06/02/08 15:59 / jlr 06/0208 15:59/ilr 06/02/08 15:59 /ilr 06/0208 15:59 / jk 06/0208 15:59 / jk ug/L ug/L ug/L ug/L udL ug/L ug/L ug/L ug/L udL o/oREC %REC %REC o/oREC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 8&120 70-'130 80-120 80-120 Report RL - Analyb reporting limit. Definitions: eCL - euality conkol limit. MDC - Minimum detedable concentration MCL - Maximum contaminant level. ND - Not detecfed at the reporting timit. I ENEflGY LABOEATORES, lNC. '2393 Satt Creek Hyg,lway (52601) .P.O. Box 3258 . Casper; Wy A2602To// Free 888.235.05t5 ' 307.235.05t5 ' Fax 307.234.10bs :'ciipiideiirij,iiiicom , wwwenergytab.com I t I LABORATORY ANALYTICAL REPORT Client: Project: Lab lO; Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08060292-003 MW 18 Report Date: 07/17108 Collection Date: 06/04/08 11:45 DateReceived: 06/06/08 Makix: Aqueous Analyses Result Units Qualifiera RL MCUQCL Methott Analysis Date, By ND udL ND ug/L ND ug/L ND uS/L ND ug/L ND uglL 314 ug/LND ug/L 119 ug/L ND ug/LND uS/L ND ug/L ND ug/L ND ug/L 1.34 ug/L ND ug/L44.8 ugAND ug/LND ugA I I I t t I T T I t T / eobatt \,/ ;"1*' MAJOR IONS Ca6onate as CO3 Bicarbonate as HCO3 Calcium Chloride /Fluoriae I / Magnesium V Nitrogen, Ammonia as N Nihogen, Nitrate+Nitrile as N Potassium Sodium Sulhte ND mg/L 423 mg/L 546 mg/L 55 mg/L 4.2 mgfL 126 mg/L ND mg/L ND mg/L9.60 mg/L 193 mg/L 1870 mgll 7.05 s.u. 3100 mg/L 423208 423208 E200.7 44500-Cr B 44500-F C E200.7 E350.1 E353.2 E200.7 E200.7 A4500-SO4 E 06/09/08 13:19 / ljl 06/09/08 13:19 / ljl 06/19/08 18:41 /cp 06/18/08 10:52llil 06/10/08 13:18 / ljl 06/19/08 18:41 I q 06/10/08 't0:54 / eli-b 06/17108 1l:24leli-b 06/19/08 18:41 /cp 6119/08 18:41 I cA 06/11l08 11;18/sp 06,12710816:53 / smt 06127N816:53 / smt 06127108 '16:53 / sml 06/19/08 18i41 I cp 06119/08 18:41 I cp 06127n816:53 / sml 06/19/08 18:41 / cp 0412710816:53 / smt 08119/08 18:41 / cp 0612710816:53 / sml 06127n816:53 / sml 0612710816:53 / smt 0612710816:53 / sml 0612710816:53 / smt 0612710816:53 / smt 06/19/08 18:41 I q 4il2710816:53 / sml 06/19/08 '18:.41 I cp 06/30/08 13:49 / sml 06/30/08 13:54 I cwv 06/30/08 '13:54 I cwv 06/30/08 13:54 I cniu ,| 1 o.52 1 0.1 0.50 0.05 0.05 0.50 3.8 30 PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ tBO C METALS. D]SSOLVED Arsenic Beryllium Cadmium Chromium Lead Manganese Mercury MolyMenum Nickel Selenium Sitver Thallium Tin Uranium Vanadium z;inc RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U precision (r) Gross Alpha minus Rn & U MOC 0.01 10 A4500-H B 06/06/08 15:22 t jh42540C 06/08/08 11:24 t dd 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 E200.7 E200.7 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.6 E200.8 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 E900.'l E900.1 E900.1r/1.2 pCi/L 0.4 pCYL O.4 pCilL I t I Report RL - Analyte reporting timit.Definitions: eCL _ euality conhol limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detec{cd at the reporting limit. D - RL increased due to sample matrix interference. I ENEflGY LABOPATOHES, lNC. ' 2393 Satt Creek Highway (8260t_l . PO. Box JZ1S . Casper; yryAe60eTotlFree888.235.0515 ' 307.235.0515 ' Fax 307.2en.rc1i ;'ciipeiaieieriyElicom.www.energytab.com I t T LABORATORY ANALYTICAL REPORT Client: ProJect: Lab lD: Cllent Sample lD Denison Mines (USA) Corp 2nd Quarier Semi-Annual Groundwater c08060292-00s MW 18 Report Date: O7117108 Collection Date: 06104/08 11:45 DateRecelved: 06/06/08 Matrix: Aqueous Analyses Result Units Qualiflers RL MCUQCL Method Analysis Date, ByI T I T t t I T T I I I t I I DATA QUALITY A/C Balance (t 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carton tetrachlorido Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene{4 Sun: Dibromolluoromethane Sun: p-Bromofl uorobenzene Sur: Toluen+d8 -1.37 o/o 47.5 meq/L 46.2 meq/L 3020 mgn- 1.03 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/LND ug/L 108 %REC113 %REC 93.0 ToREC 99.0 %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-130 80-120 60-120 Calculation Calculation Celculation Calculation Calculation sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B 06t20108 '15:53 / lab 0612010815:53 / lab 06/20/08 15:53 / lab 06120108 15:53 / lab 06/20/08 15:53 I lab 06/09/08 13:54 /jlr 06/09/08 13:54 t itr 06/09/08 13:54 t ilr 06109/08 13:5,4 / jlr 06/09/08 13:54/jlr 06/09/08 13:54 I ilr 0€i/09/08 13:54 / jlr 06/09/08 13:54 / itr 06/09/08 13:54 litr 06/09/08 13:54 I jlr 06/09/08 13:54 t jV 06/09/08 13:54 / jlr 06/09/08 13:54 t jk 06/09/08 13:54 I it Report Deflnltlons: RL - AnalyE reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detec{ed at the repoiling limit. I ENEROY ABORATORIEA NC. '2393 Salt Creek Highway (82601) 'PO. 1ox 3258 ' Casper WY826A2 Toll Free 888.235.0515 , 307.235.0515 ' Fax 307.234.1639 , casper@energylab.com ' www.energylab.com I t I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Glient Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08060292-004 MW 19 Report Date: 07/17108 Collection Date: 06/04/08 13:55 DateReceived: 06/06/08 Matrix Aqueous Amlysos Result UnlB Qualifierr RL MCU OCL Method Analysis Date I By pCi/L pCi/L pCi/L / I t t 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 Sodlum 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 Zjnc RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha mlnus Rn & U Precision (t) Gross Alpha minus Rn & U MDC ND mg/L 257 mg/L 140 mg/L 28 mg/L1.1 mg/L 46.2 mg/L ND mg/L 2.M mgA 4.32 mg/L 113 mg/L 507 mg/L 7.63 s.u. 9?7 mg/L ND ug/L ND uS/LND uS/L ND uS/LND ug/L ND ug/L ND uS/L ND ug/L ND ugA ND ug/L ND ug/LND ug/L 1O.2 ug/L ND ug/LND ug/L ND ug/L 6.76 ug/LND ug/L ND ug/L 1.3 o.4 0.4 423208 42320 B E-200.7 A4500-Cr B 44500-F C E200.7 E350.1 E353.2 E200.7 E200.7 A4500-so4 E E200.8 E200.8 E200.8 E200.7 8200.7 E200.8 E200.7 8200.8 8200.7 E200.8 E200.7 E200.7 E200.8 E200.8 E200.8 E200.7 E200.8 E200.6 E200.8 E900.1 E900.1 E900.1 'I 1 0.50 ,| 0.1 0.50 0.05 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 44500-H B 0d06/08 15:50 / jh A2540 C 06/08/08 11:24 t dd 06/09108 13:26 / lil 06/09108 13:26 / ljl 06/19/08 18:45 / cp 06/1 8/08 1 0:55 / gl 06/10/08 13:20 / ljl 06/19/08 1E:45 I e4 06/10/08 10:57 / eli-b 06/17108 11:25 / eli-b 06/19/0E 18:45 / cp 06/19/08 18:45 / cp 06/11/08 1'1i27 I sp 06n7n818:40 / sml 06n71O818:40 / sml 06/27108 18:40 / sml 06/19O9 18:45 / cp 06/19/08 18:45 / cp 46127n818:40 / sml 06/19/08 18:45 / cp 06127D818:40 / sml 06/19/08 18:45 / cp 0612710818:40 / sml 06/19/08 18:45 / cp 06/19/08 18:45 / cp 0612710818:40 / sml 4012710818:40 / sml 06n7$818:40 / sml 06/19/08 18:45 / cp 06/27/0,818:40 / sml 0612710818:40 / sml 0612710818:40 / sml 06/30/08 13i54 I ctw 06i/30/08 13:54 / crw 06/3008 13:54 / crw t T I Report RL - Analyb reporting limit. Deflnitlons: eCL - euality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at th6 reporting limit. D - RL increased due to sample matrix intorference. ENEfrGY LABOBATORTE-5,-INC ' 2393 Salt Creek Highway (8260t) . PO. Box 3258 . Caspet WyAZ60pTott Free 888.235.05/5 ' s07.235.0515 ' Fax azi.iii.ii1e :ciiiiiheidisyitin . wwwenergytab.com LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Glient Sample lD Denison Mines (USA) Corp / 2nd Quarter Semi-Annual Grounduater /co806o2s2-004 /MW19 V Report Date: 07117108 Collection Date: 06/04/08 13:55 DateReceived: 06/06/08 Matrix Aqueous Analyses Result Unlts Quallfiers RL xtcuQCL M€thod Analysis Date / By DATAQUALITY AIC Balance (r 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - I.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chlorHe Naphthalene Toluene Xylenes. Total Surc 1,2-Dichlorobenzene.d4 Surr: Dibromofl uoromethane Su rr: p-Bromofl uorobenzene Sun: Toluen+d8 0.002 0a 15.8 meq/L15.E meq/L 983 mg/L 0.990 ND ug/LND ug/L ND ug/LND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/LND ug/L 109 %REC 111 %REC90.0 %REC99.0 %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 ,.0 80-120 70-1 30 80-120 8G120 Calculation Calculation Calculation Calculation Calculation sw8260B sw8260B sw8260B sw8260B sw8260B sw82608 sw8260B SWE26OB sw8260B SW8260B sw82608 sw8260B sw8260B SW826OB 06/20/08 15:53 / tab 06/20/06 15:53 / lab 06/20/08 15:53 / lab 06/20/08 15:53 / tab 0620/08 15:53 / lab 06/09/08 14:29 I jtr 06/09/08 14:29ljk 06/09108 14:29 I itr 05/09/08 14:29 I jtr 06i/09O8 14:29 tjtr 06/09/08 14:29 ljtr 06/09/0E 14:29 I jtr 06/09/08 14..29 tik 06/09/08 14t29ljll 05/09/08 14:29 I in 06/09/08 14:29 litt 06/09/08 14:29 ljlr 06/09/08 14:29 t itr 06/09/08 14:29 t ik Report RL - Analyte reporting lirnit.Definitlons; ecl - euality confol limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. _EI{ERGY LABORATOTHEA Nc ,_2399 satt creek Hrghway (s2601) ,po. Box 3258 . casper waz60zTo//Free888.205.05/5 ' 302235.0515 ' Fax 307.234.1639 .Zasper@mergyAO.con.www.ifiir7ytaO.coi- LABORATORY ANALYTICAL REPORT Cllent: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08061004-006 MW 20 Report Date. 07127108 Collection Date: 06/17108 10:27 DateReceived: 06/20/08 Matrix: Aqueous Analyses Result Units Qualiflers RL MCUQCL Method Analysis Date / By 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 PROPERT!ES pH Solids, Total Dissolved TDS @ 180 C METALS - DISSOLVED Ars€nic 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 364 395 67 0.2 108 0.69 2.52 61.9 1480 3880 1 ,| 1 1 0.1 0.5 0.05 0.05 0.5I 60 0.01 't0 5.0 0.50 0.50 25 10 10 50 1.0 10 0.50 l0 20 5.0 10 0.50 100 0.30 15 10 mg/L mg/L mS/L mg/L mS/L mg/L mgL mdL mdL mS/L mg/L A2320 B 423208 E200.7 A4500-ct B 44500-F C E200.7 E350.1 8353.2 E200.7 E200.7 A4500-SO4 E E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 E200,8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.E E200.8 Eq)o.1 E900.1 E900_1 06126/08 11:13/ljl 06126/08 11:13 / lJl 07/08/06 2A:17 I cp 06n6n9 16:17 t lit 06,12510814:47 tl)l 07/08/08 2O:17 I cp 07/09/08 11:04 / eli-b 07/03/08 10:11 / eli-b AllOAl0E20:17 tcp 07/08/0E 20:17 I cp 0612510816:30 I sp 7.35 s.u. 5570 mg/L ND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/L ND ug/L ND ug/L 77 ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND uS/L o.il ug/L ND ug/L 34.6 ug/LND ug/L 41 ug/L 2.1 0.5 0.4 O7n7lA819:30 / ts 0711710819:30 / ts 07117t0619:30 / ts 0711710819:30 / b 47fi710819:30 / trs O7n7n819:30 / ts 0710810820:17 lcp 0711710819:30 / ts 071081O82A:17 lca 0711710819:30 / ts 07117108 '19:30 / ts 071171o819:30 / ts 07n7n819:30 / ts 0711710819:30 / ts 07/'1710819:30 / ts 0711710819:30 / ts 0711710819:30 / ts 07l17lOA 19:30 / ts 071171O819:30 / ts 07/08/08 19:41 /crw 07/08/08 19:41 / crw 07/08/08 19'.41 I cnly ,A4500-H B 06/23108 11:5Eljh42540C 0612310809:47 I dd pCi/L pCi/L pCi/L Repoft RL. Analytc reporting limit. Definitions: eCL - euatity 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 ENEflGY LABaRATORiES, ltlc . pi93 satt creek Highway (ae60t) , po. tux 3zs8 . casper. wa260pToll Free 888.235.05/5 ' 302235.0515 ' Fax 307.234.1639 . cisperAienetgyEi.con . wwwehergytab.mi- I I LABORATORY ANA LYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08061004-006 MW20 Repoft Date: 07l27lOB Collecfion Date: 06i17/08 10:27 DateReceived: 06/20/08 Matrix: Aqueous I Analysea R$ult Units Qualifiers RL MCU QCL Method Analysis Date / By t I T t T I I I T I T I DATAQUALITY /NCBalanCE (t 5) l/ anions Cations Solids. Total Dissolvecl Calculated TDS Balance (0.E0 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzened4 Sun: Dibromofluoromethane Surr: p-Bromofl uorobenzene Sur: Toluena-d8 2.93 % 89.1 meq/L 94.4 meq/L 6200 mg/L 0.900 ND uglLND ug/L ND ug/L ND uE/L ND ug/L ND ug/L ND ug/L ND ug/L ND Ug/L ND ug/L 1't6 70REC139 %REC 112 %REC 94.0 %REC 20 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 Calculation Calculation Calculation Calculation Calculation sw8260B sw8260B sw8260B sw8260B sw8260B SWE26OB SW826OB sw8260B sw8260B SW825OB sw8260B sw8260B sw8260B SW826OB 071'1110815:19 / sw 0711110815:19 / sw 07111108 15:19 / sw 07111lOB 15;19 / sw 07t1110815:19 / sw 06/23108 18:17 / dkh 46/2310818:17 / dkh 06/23/08 18:17 / dkh 06112310818:17 / dkh 06,12310818:17 / dkh 0612Y08 18:17 / dkh 06,D3n818:17 / dkh 06123108 18:17 / dkh 06t23/08 18:17 / dkh 06nsn9 18:17 / dkh 06/23/08 18:17 / dkh 06123n818:17ldkh 0412310818:17ldkh 06/23/08 18:17 / dkh t T T Report RL - Analyte reporting timit. Deflnitions: eCL - euality control limit. MDC - Minimum deteetable concentration MCL - Maximum @ntaminant level. ND - Not det€cted at the reporting timit. S - Spike recovery outside of advisory limits. I ENEBGY LABOflATOHES, lNC. ' 2393 Salt Creek Highway (52601) . PO. Box 3258 . Casper, WyAz60ZTolt Free 888.235.0515 ' s02235.05t5 ' Fax Szzzst. id1i ':Aiiiidei6r;yE:b.com . wwwenergytab.am I I Client: Project Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08061004-007 MW22 Report Da|c: 07127108 Collection Date: 06/17108 09:37 DatreReceived: 06/20/08 Matrix: AqueousI Analyses Result Unlts Qualifiers RL MCU QCL Method Analysis Date / By 1 1 1 1 0.'l 0.5 0.05 0.05 0.5 I 60 5.4 pCi/L 0-8 pCilL 0.4 pCi/L I I I I T I T I I T t T MAJOR IONS r6arbonate as CO3 / Bicarbonate as HCO3 / Calcium / chloride l/ Ftuoride Magnesium Nitmgen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate / pnysrcal pRopERTlEs/pa Solids, Total Dissotved TDS @ 190 C METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt / copger/ tony' leao Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U , / Gross Aleha minus Rn & U precision (t)V Gross Alpha minus Rn & U MDC ND mg/L 436 mg/L 4E3 mS/L 64 mS/L 2.8 mg/L 975 mg/L 0.36 rnS/L 3.50 mg/L26.2 mg/L 260 mg/L 5130 mg/L 6.20 s.u. 7110 mg/L ND ug/L 2.27 ug/L 92.7 udL ND uS/L 266 ug/L 14 udL ND ugAND ug/L 31 100 ug/L ND ug/L188 ug/L 1 18 ug/L 13.2 ug/L ND ug/L 1.15 ug/LND ug/L 52.4 ug/L ND ug/L458 ug/L 42320 B A232AA E200.7 .A4500-Ct B A4500-F C E200.7 E350.1 E353.2 E200.7 E200.7 44500-504 E A4500-H B A2540 C E200.8 E200.8 E200.8 E200.8 E200.6 E200.8 EaAO.7 E200.8 E200.7 E200.8 E200.8 Ez(x).E E200.8 E200.6 E200.8 E200.8 E200.8 E200.8 E200.8 E900.1 8900.1 E900.1 06126/08 1 'l :19 / lit 06126/0E 11:191ljt 07/08/08 20'.22 t q 0O126108 16i23 ttit 06/25/08 14:51 I ljl 07/08/08 20:22 I cp 0710910811:05 / eli-b 07/03/08 10:13 / eli-b 07l08lOB 20:221 cp 07/08/08 20:22 I cp Af/25l08 t6:34 I sp 06/23108 12:01 tjh 06/23108 09:47 / dd 07117108 19:36 / ts 07l17ng 19:36 / ts 0711710819:36 / ts 0711710E 19:36 / ts 07117108 l9:36 / ts 0711710819:36 / ts 07/08/08 20:22 I cp 0711710819:36 / ts 07108N82A:22 I cp 07117n819:36 / ts A7nln$19:36 / ts A7l17l0E 19:36 / ts 0711710819:36 / ts 0711710819:36 / ts 0711710819:36 / ts 07117rcB 19:36 / ts 07117108 19:36 / ts O7l17lOB 19:36 / ts 07117108 19:36 / ts 07/08/08 19:41 /crw 0TlOAlOg 19:4'l I cw 07108/08 19:41 / crw 0.01 10 5.0 0,50 0.50 25 10 10 50 1.0 10 0.50 10 20 5.0 10 0.50 100 0.30 15 10 t I t Report RL - Anatyte reporting timit.Definitions: eCL - euality control llmit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the repofting limat. D - RL increased due to sample matfix interference. T ENEROT LABonAToElEs, Nq: '_2393 satt creek Hrghway (82601) . po. Box s2i8 . caspu wy a2602 Toll Free 8ffi.235.0515 ' 302235.0515 ' Fax 307.234.1639 , -cisper@energylab.com , wwi.ehergylab.com T I T LABORATORY ANALYTTCAL REPO RT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08061004-007 MW 22 Report Date: 07l27lOB Collection Date; 06117108 09:37 DateReceived: 06/20/08 Matrix: Aqueous Analyrsis Date / ByAnalysosResult Units Quallflers RL itcu OCL ilethod Caleulation Calculation Calculation Calculation Calculation I I I I t I I I t I I I DATA QUALITY A/C Balance (t 5) Anions Cations Solids, Total Dissolved Calculat8d TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS 0.055 %116 meq/L 116 meq/L 7180 mg/L 0.990 ND ug/L ND udLND ug/L ND u/L ND udL ND ug/L ND ug/L ND udLND uyL ND ug/L 117 %REC 128 %REC 111 ToREC 92.0 %REC sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B SW8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B 0711110815:20 / sw Aln1nB15:20 / sw 0711110815:20 / sw A7fiU0815:20 / sw 0711110815:20 / sw 06/28/08 14:57 I dkh 06n8/08 14:57 / dkh 06128/08 14:57 / dkh 06/28/08 14:57 I dkh 06/28/08 14:57 / dkh 06/28rOE 14:57 / dkh 06/28108 14:57 I dkh 05/2El0E 14i57 I dkh 06/28rc8 M57 ldkh 06/28/08 14:57 / dkh 0612810814:57 I dkh 0612810814:57 I dkh 06/28/08 14:57 / dkh 0612810814:57 / dkh {cetone penzene / Carbon tetrachloride I / ctrtorotormV Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr:'l,20ichlorobenzened4 Surr: Dibromofluoromethane Sun: pBromofl uorobenzene Sun: ToluensdS 20 1.0 1.0 1.0 1.0 20 1.0 1,0 1.0 1.0 80-120 70-l 30 80-120 80-120 t I I Report RL - Analyb reporting limit. Oeflnltlons: eCL - euality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. t ENEfrGY LABORA1OHEE lNC. . 2393 Salt Creek Highway (1ml , P.O. Box 3258 . Caspe1 W AZffie Toll Free 888.235.0515 . 302235.0515 ' Fax 307.234. /639 , 'casper@energylab.eon . www.eheigylab.com T I I Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c0806070&001 MW23 LABORATORY ANALYTIGAL REPORT / Report Dalei 07l17lOB Collection Date: 06109/08 15:20 DateReceived: 06/1 3/08 Matrix: Aqueous Analyses Result Unlts Qualiflers RL MCU QCL Method Analysis Date I By pCi/L pCilL pGi/L t t I I t t t t t T MA.IOR ]ONS Calcium Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper Iron Lead Manganese Mercury Molybdenum Nickel Selenium Silvet Thallium Tin Uranium Vanadium Zinc RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha rninus Rn & U Precision (t) Gross Alpha minus Rn & U MDC VOLATILE ORGANIC COMPOUNDS Acetone Benzenc Carbon tetrachloride Chloroform Chloromethane Mefiyl ethyl ketone Methylene chloride Naphthalene 494 mg/L 159 mg/L 0.16 mg/L O.2 mg/L 10.4 mg/L 400 mg/L ND ug/L ND uS/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/L ND ug/L 2Eg ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L 1,06 ug/L ND ug/L 18.6 ug/L ND ug/L 29 ugll 1.9 0.5 0.4 ND ND ND ND ND ND ND ND ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L E200.7 E200,7 A45OO.NH3 G E353.2 E200.7 E200.7 E200.8 E200.8 E200.8 E200,8 E200.8 E200.8 E200.7 E200,8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 E900.1 E900.1 E900.1 06/30/08 16'.57 lcp 06/30/08 16:57 / cp 06/17108 11;38 /ial 06/18/08 11:45 tiat 0640/08 16:57 / cp 06/30/08 16:57 / cp O7n4n8 02:34 / sml 07l04lOA 02:34 / sml O7lO4l08 02:34 / sml 07104108 02:34 / sml 07l04nB 02:34 / sml 07l0d,l08 02:34 / smt 06/30/08 16:57 / cp 07l%n$ 02:34 / sml A7n4nA 02:34 / sml 07104108 02:34 / sml 07/&/08 02:34 / sml O7lO4lO802:34 lsml 07lO4lO8O2:M lsml 07n7n811:54 / ts 07104108 02:34 / sml 06/30/08 16:57 / cp 07/04/08 02:34 / sml 06/30/08 16:57 I cp 07/04/08 02:34 / sml 07/08/08 17152 I ctw 07/08f)B 17:52 I gw 07/0808 17:52 lcrw 0.52 0.50 0.05 0.1 0.50 3.8 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 20 1.0 1.0 1.0 1.0 20 1.0 1.0 tJ t SW8260B OGl17lO822:11 I iESW8260B 06,t17N822:11 t jk Sw8260B 06t1710822:11 I jtr SW8260B 06t1710822:11titt SW8260B 06117n822:11 I 1trSW8260B 06/17108 22:11 lin SW8260B 06/17108 22:11 lik SW8260B 06117n822:11 t jtr I T t Report Deftnitlons: RL -Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. O - RL increased due to sample matrix interference. I EilEnGY LABOEATOf,IES, lNC. ' 2393 Salt Creek Hishway (82601) 'PO. Box 3258 , Caspet WY82602 loll Free 888.235.A56 . 307.235.0515 ' Fax 307.234.1639 . cisper@energytaO.com . wwweher'!1ylab.con T I t LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08060706-001 MW 23 Report Date: 07117108 Collection Date: 06/09108 15:20 DateReceived: 0611 3108 Matrix: Aqueous AnalyBes Result Units Qualifiers RL MCUQCL Method Analysis Date / By ND ND 1',t2 111 91.0 89.0 t I I I I I t T t T t I VOLATILE ORGANIC COMPOUNDS Toluene Xylenes, Total Surr: 1,2-Dichlorobemen+d4 Sun: Dibromofl uoromethane Sun: p-Bromofl uorobenzene Sun: Toluene.dS ug/L udL %REC %REC %REC %REC 1.0 1.0 80-1 20 70-1 30 80-1 20 80-120 SW8260B sw82608 SW8260B sw82608 SW82608 sw8260B 0611710822:11 tllr 06t17N822:11 t ilr 061171a822:11 t itr 06n7n822:11 tjtr 06117108 22:11 I jk 06117108 22:11 I jk I I I Report RL - Analyte repotting limit. Deffnitlons: eCL - euatity confol limit. MDC - Minimum detectable concentralion MCL - Maximum contaminant level. ND - Not detected at the reporling limit. EilEfrGY LABonAToRlqs, lYc . zsgs satt 6reek Highway (8260t), po. Box s2sS, caspet w az60pTollFree888.235.05ti ' 307.235.0515 ' Fax30zzsa.t639 ;'cf,spe;deiirgyh-;"oon:www.ifiiriiao.iii- LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08060706-004 MW23 Report DaE: 07117108 Collection Date: 06/17108 14:12 DateReceived: 06D0108 Matrix: Aqueous Analyses Result Units Quallfiars RL MCU QCL Method Analysis Date / By /UA'OR IONS / Carbonate as co3 y/ Sicarbonate as HCO3 Chloride Fluoride Sulfate /PHYSICAL PROPERTTES , /pH V Solids, Totat Dissotved TDs @ 1Bo c ND mg/L306 mg/L6 mg/LO.2 mg/L 21A0 mS/L 7.05 s.u. 3540 mgiL 1 1 1 0.1 30 0.01 10 42320 B 42320 B A4500-Ct B 44500-F C 44500-504 E @n3n8fi:46 lljl 06123/08 11:46/ljl 06,D410811:07 / sp 06n5nB 10:33 / ljl 06,123n811:02 / sp 44s00-H B 06/23/08 11:48 /jh42540C 06124t0814:35/dd Report Detinitions: RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentralion MCL - Maximum contaminant level. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference. I ENEEGY LABOfrATOilES, lNC. '239i Salt Creek Highway (82601) 'P.O. Box 3258 ' Caspet; WY 82602 Totl Free 888.235.0515 . 307,235.0515 . Fax 307.234.1639 ' casper@energylab.com ' wwwenergylab.corn t T I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08051285-007 MW 24 Report Date: 07i07/08 Collection Date: 05/29/08 07:15 DateReceived: 05/30/08 Matrix: Aqueous AnalyEes Result Unlts Quallflerc RL MCUOCL Method Analysis Date / By 1 o.52 1 0.1 0.50 0.05 0.05 0.50 3.8 30 s.u. mS/L I I I t T T I I I T I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Qalcium TChloride/ Ftuotide \ / tvtagnesiumv Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfute ND mg/L 188 mg/L 500 mg/L 45 mg/L 0.1 mg/L 186 mg/L 0.32 mg/L 0.12 mdL 12.7 mg/L 5O2 mg/L 2770 msll A2320 B 42320A Ez00..7 44500-Ct B A4500-F C E200.7 E350.1 E353.2 E200.7 E200.7 44500-504 E 06/03/08 14:s8 / ljl 06/03/08 14:58 / ljl 06/09/08 20:45 I cA 06/09/08 13:25 / ljl 06/04/08 14:09 / Ijl 06/09/08 2Q:45 I cp 06/05/08 08:31 / eli-b 06/09/08 13:14 / eli-b 06/09/08 20:45 / cp 06/09/08 20:45 / cp 06/04/08 10:13 / sp PHYSICAL PROPERT]ES pH Solids, Total Dissolved TDS @ 180 C METALS. DISSOLVED Arsenic Beryllium Cadmium Ghromium 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 7.14 4030 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 A4500-H B 05/30/08 16:3'l / jh 42540 C 06/0208 09:20 / dd r/ ND ug/L ND ug/L ND ug/L ND uS/L ND ug/L ND ug/L 2740 ug/L ND ug/L 2330 ug/L ND ug/L ND ug/L ND ug/L ND ug/LND ug/L ND uS/L ND ug/L O.77 uglLND ug/L17 ug/L 0.8 0.3 0.3 E200.8 E200.8 E200.8 E200.6 E200.8 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 E200.8 E900.1 E900.1 E900.1 pCi/L pCi/L pCi/L 06/11/08 07:34 / sml 06/11/08 07:34 / sml 06/11/08 07:34 / sml 06/11/08 07:34 / sml 06/11/08 07:34 / sml 06/1 1/08 07:34 / sml 06/09/08 20:45 I cp 06/11/08 07:34 / sml 06/09/08 20:45 I cp 06/11/08 07:34 / sml 06/11/08 07:34 / sml 06/1 1/08 07:34 / sml 06/1 1/08 07:34 / sml 06/1 1/08 07:34 / sml 06i/1 1/08 07:34 I sml 06/11/08 07:34 / sml 05/11/08 07:34 / sml 06/11/08 07:34 / sml 06/1 1/08 07:34 / sml 06/18/08 13:51 /cil 06/18rc8 13:51 /crw 06/18/08 13:51 / crw t I I Report RL - Analyte reporting limit. Deflnltlons: eCL - euality conrol timit. MDC - Minimum detec{able concentration MCL - Maximum contaminanl level. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interference. T ENERGY UIBORATOHEA NC. ' 2393 Salt Creek Hiohway (82601) . PO. Box 3258 . Casoen W 82602 Toll Free 888.235.05/5 ' 307.235.0515 ' Fax 307.234.1639 .'casper@energylab.com , www:ehergytah.com I I T Client: Project; Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c0E051285-007 MW 24 Report Date: 07/07108 Collection Date: 05/29108 07:15 DateReceivEd: 05/30/08 Matrix: Aqueous Analyses Result Unlts Quallfiers RL ucuOCL Method Analysis Date / ByI I I T t I t I I T T t DATAQUALITY . A/C Balance (r 5) . ,/ Anionsv cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Aoetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xy4enes, Total Surr:'1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Sun: p-Bromofl uorobenzene Sun: Toluened8 0.318 % 62.0 meq/L 62.4 meq/L 4110 mg/L 0.980 ND ug/L ND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ugA ND ug/L ND uglL ND ug/L 107 %REC 109 %REC 93.0 %REC 100 %REC 20.t.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 Calculation Calculation Calculation Calculation Calculation sw82608 SW8260B sw8260B sw8260B sw8260B SW826OB SW8260B sw6260B sw8260B sw8260B sw8260B sw82608 sw8260B sw8260B 06/10/08 15:09/jc 06/10/08 1s:09 /jc 06/10/08 15:09 ljc 06/10/08 15:09 /jc 06/10/08 15:09 /jc 06/02108 15:24 titt A6fi2lOB 15:24 ljlr 06/02/08 15:24 I jn 06/02/08 15:24 tjlr 06/0208 15:24 I jlr 06/0208 15:24 I jV 06/02/08 15:24 ljlr 06102108 15:24 titr 06/02/08 15:24 ljlr 06/02/08 15i24 t ik 06/02/08 15:24 litr 06/02/08 15:24 lin 06t02108 15:24 lii 06/02/08 15:24 I jk t I t Report Definitlons: RL - Analyte reporting limit. QCL - Quality conbol limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detect€d at the reporting limit. I ENEBGY UIBORATORIE$ lNC. . 2393 Salt Creek Highway (82601) , P.O. tux 3258 ' Casperi WY82602 Toll Free 8ffi.235.0515 . 307.235.0515 ' Fax 307.234.1639 . casper@energylab.con ' www,enagylab.com t I T LABOMTORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c0806070s002 MW25 Report Date: Collection Date: DateReceived: Matrix: 07t't7t08 06/1?08 08:55 06/13/08 Aqueous Analysos Rosult Units Quallflers RL MCU OGL Method Analysis Date / Byt I I I I t I I I t T t MAJOR IONS Carbonate as CO3 ficarbonate as HCO3 / calclum / cnwtiae l/ Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate ND 381 383 25 0.3 130 0.67 ND 9.48 306 1610 7.30 2770 ND ND 1.19 ND ND ND ND ND 1670 Nt) 11 ND ND ND 0.93 ND 6.08 52 ND 1.4 0.5 0.4 s.u. mg/L ugiL ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L udL ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 1 1 0.52 1 0.1 0.50 0.05 0.1 0,50 3.8 t0 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 mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L A2320 B A.2320 A E200.7 A4500-Cr B A4500-F C E200.7 A45OO.NH3 G E353.2 E204.7 E240.7 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 E200.7 E200.8 E200.7 E200.8 E900.1 E900.1 E900.1 0611710814:30 / ljl 0e/1714814:30 / ljl 06130/08 17113 I cp 0612410811:03 / sp 06120/08 12:07 t tit 0640/08 17:13 I cp a$t1710811:40 / jal 06/18108 11:55 I jal 06/30/08 17:13 I cp 06130108 17i13 I cp 06/20108 14:00 / sp OTlc/,lOg 02:41 /sml 07104108 02:4'l / sml 07l0,4,lO8O2:41 lsml 0704/08 02:41 / sml O7l04,l08 02:41 / sml A7rc4108 02:41 / sml 0640/08 17:13 I cp O7l0d,n8 02:41 / sml ATl0/.ng 02:4,l / sml O7l0/,l08 02:41 / sml 07104,108 02:41 /sml O7l04,nB 02:41 I sml o7lmnB 02:41 /sml 07lO7lo8 12:00 / ts O7lO4l08 02:41 / sml 06/30/08 17113 I ep 07l04lOA 02:41 / sml 06/30/08 '17:'13 I ca 07104108 02:41 / sml 07/08/08 17'.52 t crw 07/0810E 17'.52 I ctw 07/08/08 17:521 crw PHYSICAL PROPERTIES /pnV Sotids, Totat 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 r RADONUGLIDES - DISSOLVEDI/ Gross Alpha minus Rn & U \/ Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC A4500-H B 06/16/08 '15:12 tjh A2540 C 06/17108 09:19 / dd pCi/L pCilL pCi/L T I I Report RL - Analyte reporting limit. Detinitions: eCL - euality conkol limit. MDC - Minimum detectable concentration MCL - MaxinxJm contaminant level. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interfeEnce. I ENEflGY LABORATORIES, lye ' 2393 sa/t creek Hishway (8260t) , po. Box Szid . caspet; wy aztuz Toll Free 8ffi.235.0515 ' 307.235.0515 , Fax s07.294.1639 , 'cisper@energytab.con . www.eheigytab.coi I I T LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp ./ 2nd Quarter Semi-Annual Groundwaler ,/co8o6o7o6-oo2 /MW25 Y Report Date: Collection Date: DateReceived: Matrix: an17t08 06/12108 08:55 06/13/08 Aqueous Amlyses Result Units Qualifiers RL MCUOCL ilethod Analysis Dat6 / By T I I I I I I T I I I T DATAQUALITY /C Balance (t 5) t ./Anionsv c",ion, Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Fenzene /C^rAn tetrechloride . / cnorotormV Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Sun: p-Bromofl uorobenzene Sun: Toluen6-dB 3.49 olo 44.4 meq/L43.4 meq/L 2650 mg/L 1.05 ND udl ND udl ND ug/L ND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/L ND ug/L 112 %REC 1O7 %REC90.0 %REC 89.0 %REC z0 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 Calculation Calculation Calculation Calculation Calculation sw8260B SW826OB SW826OB sw8260B sw8260B sw8260B SW8260B sw82608 sw82608 sw8260B SW8260B sw82608 SW82608 sw82608 07102t08 13:06 / jc 07102t0E 13:06 / jc 07|0ZOA 13:05 / jc 07n?,08 13:06 / jc 0710210813:06 / jc 06t17t0822:46 ljr 06/17108 22:46 I itr 06117t0822:46 tjtr 06/17108 22:46 I jlr 06/17108 22:46 t jk 06/17108 22:46 I jtr 06/17108 22:46 I jk 06t17t0822:46 llh 06117to822:46 ljtr 06/17108 22:46 t )tr 06/17108 22:46 I jtr 06/1708 22:46 tjtr 06/17108 22:46 t ji 06t171O822:46 tjtr I I I Report RL - Analyte reporting limit. Definitions: eCL - euality control limit. MDC - Minimum deteclable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. I ENERGY LABOnAfOilES! l!19: '_2393 Salt Creek HlThway (82001) ' P.O. Box 3258 , Caspet WY 82602 Toll Free 888.235.0515 ' 307.235.0515 ' Fax 307.234.1&9 , cisper@energylab.com , www:eiwrgylab.com t I I Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter Serni-Annual Groundwater ./ c08051285-003 / MW26 t/ Report Date: 07/07/08 Collection Date: 05127IOB 14:20 DateReceived: 05/30/08 Matrix: Aqueous Arnlyses Result Unitr Qualifiers RL MCUQCL Method Analysis Oate / By pCi/L pCi/L pCi/L t I t I T I I I t T I T 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 Manganesa 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 380 mg/L 488 mg/L 56 mg/L 0.2 mg/L 166 mg/L 0.22 mg/L 0.34 mg/L10.4 mg/L 228 mg/L 2010 mglL 7.18 s.u. 1630 mg/L ND ug/LND ug/L NO ug/L NO ug/L ND uglL ND ug/L 1100 ug/L ND ug/L 'I 130 ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L NO ug/LND ug/L 21.7 ug/LND ug/LND ug/L 2.9 0.6 0.3 423205 A2320 B E200.7 A4500-Ct B 44500-F C EzW.7 E350.1 E353.2 E20A.7 E200.7 M500€o4 E E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 E200.6 E200.8 E200.8 E200.E E200.8 E200.8 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 1 1 0.s2 1 0.1 0.s0 0.05 0.05 0.50 3.8 60 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 44500-H B 05i30108 16:18 /jhA2540C 06nA08 09:19/dd 06/03/08 14:30 / ljt 06/03/08 14:30 t til 06109/08 20:17 / cp 06/06/08 15:29 / ljl 06/0,[/08 13:48 I \l 06/09/0820:17lcp 06/05/08 08:27 / eli-b 06/10/08 10:52 / eli$ 06/09/08 20;17 / cp 06/09/06 20:17 I cp 06/03/08 16:42 / sp 06/1 1/08 06:47 / sml 06/11/08 06:47 / sml 06/11/08 06:47 / smt 06/1 1/08 06:47 / srnl 06/1'll08 06:47 / srnl 06/11/08 06:47 I sml 06/09/08 20:t7 t cp 06/11/08 05:47 / sml 06/09i08 20:17 I cp 06/11/08 06:47 / sml 06/11/08 06:47 / sml 06/11/08 06:47 / sml 06/11/08 06i47 / sml 06/11/08 06:47 / sml 05/11/08 06:47 / smt 06/11/08 06:47 / sml 06/11/08 06:47 / sml OAllllOB 06:47 / sml 06/11/08 06:47 / sml 06/1 8/08 12:'13 I crw 06/18/08 12113 I ctw 06/18/08 12:13 I cnv I t T RL - Analyte reporting limit. OCL - Quality control liInit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. D - RL increased due to sample matrix interftrence. I ENEfrOY LABOilA1OflES, lNC. ' 2393 Salt Creek Highway (82601) ' PO. Box 3258 ' Caspet W 82602 Toll Free 888.235.0515 , 307.235.0515 . Fax 307.234.1639 . casper@energylab.com ' wwwenergylab.com T T T LABORATORY ANALYTICAL REPORT Client: Project: Lab ID: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-An nual Groundwater c08051285-003 MW 26 Report Date: 07lAll08 Collection Date: O5l27lAB 14:20 DateReceived: 05/30/08 Matrix: Aqueous Amlyses Result Unlts Quallflers RL MCUOCL Method Analysls Date I ByI I I I T I t I I T I T / oau,ouALtrY / A/C Balance (t 5)y' Anion. Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS -1.48 % 49.6 meq/L 4E.2 meqA 3150 rnglL 0.520 ND ug/L ND ug/L ND ug/L 2000 ug/L ND ug/L ND ug/L 1 10 ug/L ND ug/L ND ug/L ND ug/L 110 %REC 114 %REC 102 %REC 97.0 %REC Calculation Calculation Calculation Calculation Calculation sw82608 sw8260B sw8260B sw8260B SW826OB SW826OB sw8260B SW826OB sw8260B sw8260B sw8260B SW826OB sw8260B sw8260B 06/10/08 15:09/jc 06/10/08 15:09 / jc 06/10/08 15:09/ jc 06/10/08 '15:09 / jc 06/10/08 1s:09 / jc 06/06/08 02:27 t dkh 06/06/08 02:27 I dkh 06/06/08 A2:27 I dkh 06/06/08 03:06 I dkh 06/06/08 02:27 / dkh 06/06/08 02:27 / dkh 06/06/08 02:27 / dkh 06/06/08 02:27 / dkh 06/06/08 A2:27 I dkh 06/06/08 02:27 / dkh 06/06O8 02:27 / dkh 06/06/08 02:27 / dkh 06/06/08 02:27 I dkh 06/06/08 02:27 I dkh Acetone / Benzerw ,/ Ca*on tetrachloilde Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total 20 1.0 1.0 100 1.0 20 1.0 1.0 1.0 1.0 E0-120 70-130 80-120 80-'120 Surr: I Sun: Dibrornofl uoromethane Sun: p-Bromofluorobenzene Sun: Toluene-d8 I T I Report Deflnltlons: RL - Analyte reporting limil. 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 intsference I ElvEnGY LABof,AToptEs, tNC. , 2393 salt creek Hlqlway (s2601) , p.o. Box szss . casper wy a2602Tott Free 888.235.05/5 ' 307.23i.05rs . Fax soi.isa. itils -;b[{riidei66yEtco* . www.energytab.com I T I LABOMTORY ANALYTICAL REPORT Client: Project: Lab lD: Cllent Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08060292-005 MW27 Report Date: 07117108 Gollection Date: 06/0208 15:50 DateRecelved: 06/06/08 Matrix: Aqueous Analyses Result Unltr Qualiffers RL lltcuQCL lliethod Analysis Date / By ND 424 1V7 39 0.8 77.3 ND 6,26 4.36 75.5 453 T I T I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium Chloritle Fluoride Magnesium Nikogen, Ammonia as N Nitrogen, Nitrate+Nihite as N Potassium Sodium Sulfate /PHYSICAL PROPERTTES I / Zi,ro",rotd DissotvedrDs@ lsoc t ffi,;'DrssolvED Cadmiumt :['J'" Copper lront h:'".n,."." Mercuryr [:ii::" SilverI di; Vanadium t loo,o*r".,DEs - DrssoLVED / Gross Atpha minus Rn & UI / 8r::lir[;lffixtil;83=""o' 7.55 s.u. 1030 mg/L 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 44500-H B 42540 C E200.E E200.8 E200.8 E200.7 E200,7 E200.8 E200.7 E200.8 E200.7 E200.8 E200.7 E200.7 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 ES00.'l E900.1 06/09/08 13:32 il1t 06/09/08 13:32 t til 06/19/08 18:49 / cp 06/18/08 '10:58 / tjt 06/10/08 13i23 t tit 06/'19O8 18:49 / cp 06/10/08 10:56 / eti-b 0O11710811:26leli-b 06/'19/08 18:49 I cp 06/19/08 18:49 / cp 06/11/08 '11:30 / sp tE106/08 15:55 / jh 06/08/08 11:26 I dd 06n710818:47 / smt 06,12710818:47 / sml A6/2710A 18:47 / smt 06/'19/08 '18:49 / cp 06/19/08 18:49 / cp 06,f27l0818:47 / sml 06/19/08 l8:49/cp 06n7n818:47 / sml 06/19l0E 18:49 / cp OOn7nB18:47 / sml 06/19/08 18:49/cp 05/1 9/08 l8:49 / cp 06127n818:47 I sml 06127n818:47 / sml 06127108 18:47 / sml 06/19/0E 18:49 / cp 06n7n818:47 / smt OAET|OS 18:47 / smt 06127108 18:47 / sml 06/30/08 13;54 I crw 06/30/08 13:54/cnrv 06/30/08 13:54 / cruv mg/L mg/L mg/L mg/L mg/L mg/L mS/L mgL m9/L mg/L mga 1 1 0.50 ,| 0.1 0.50 0.05 0.05 0.50 1.5 6 0.01 10 5.0 0.50 0.50 25 10 ,t0 30 1.0 10 0.50 10 20 5.0 10 0.50 100 0.30 15 10 ND ug/L ND ug/L ND uglL ND ug/L ND ug/L ND ug/L ND ug/LND ug/LND ug/L ND ugA ND ug/LND udL 10.1 ug/L ND ug/L ND ug/L ND ug/L31.2 ug/LND ug/LND ug/L 1.9 0.5 0.4 pCi/L pCi/L pci/L t I I Reporl RL - Anatyte reporting limit.Definitlons: eCL - euality control limit. MDC . Minimum detectable con@ntration MCL - Maximum contaminant level. ND - Not detec{ed at the leporting limit. D - RL increased due to sample rnatrix interfercnce. I ENEROY ul0oflAroilEjir -1ry9: . z1go satt creek (ilqlway (sz60t) , p.o. Box J258 . casper w a2602Totl Free 8&1.235.a56 ' 307.235'0515 ' Fax 307.234.taii ;biifridriiicyEt;on, wyvwifieriyao.mi- I t I LABORATORY ANALYTICAL REPORT Glient: ProJect: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08060292-005 MW27 Report Date; 07/17108 Collection Date: 06/0?08 15:50 DateReceived: 06/06/08 Matrix: Aqueous Analyses R63ult Units Qualifiers RL MCUQCL Method Analyels Date / ByI I I I I I I I t T I I /IJ.ArA QUALTW / NC Batance (t 5)/ Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) flLE ORGANIC COMPOUNDS CaIbon tetrachlofide Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene-d4 Surr: Dibromofl uoromethane Sun: pBromofluorobenzene Surn Toluene-dB 1.6/t o/o 16.0 meq/L18.6 meq/L 1070 mg/L 0.950 ND ug/L ND uglL ND ug/L ND ug/L ND ug/L ND ug/L ND uyL ND udL ND ug/LND ugA 110 %REC 112 ToREC 91.0 %REC 100 %REC 20 1.0 1.0 1.0 't.0 20 1.0 1.0 1.0 't.0 80-120 70.130 80-120 8G120 Calculation Calculation Calculation Calculation Calculation SWE260B sw8260B sw8260B sw8260B SW8260B SW82608 sw82608 SW826OB sw8260B SW826OB sw8260B sw82608 sw82608 sw8260B 06/20/08 15:53 / lab 06/20/08 15:53 / lab 06/20/0E 15:53 / lab 06/20/08 15:53 / tab 06t2010815:53 / lab 06/09/08 15:05 /jlr 06/09/08 15:05 /jlr 06/09/08 '15:05 / jlr 06/09/08 15:05 /jlr 06/09/08 15:05 /jlr 06/09/08 t5:05/jlr 06/09/08 15:05 /jlr 06/09/08 15:05 / jlr 06/09/08 15:05 / jk 06/09/08 15:05 /jlr 06/09/08 15:05/ jlr 06/09/08 15:05 /jlr 06/09/08 15:05/ jlr 06109/08 15:05 / jlr I t I Report RL - Analyte reporting limit.Definitlons: eCL - euality control limit. MOC - Minimum deteotable concentraflon MCL - Maximum contaminant level. ND - Not detected at the reporting limit. I qilERCY LABOBAfOilqS, QlC: .,2393 Salt Creek Htghway (82601) , PO. Box JZ58 , Casper W 82602loll Free 888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 .'casper@mergylab com , wwr.ehergylab.com I I t LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08060292-006 MW28 Report Date: 07117108 Collection Date: 06/03/08 08:40 DaGReceived: 06/06/08 Matrix: Aqueous AnalFes Result Units Quallflers RL MCUOCL llethod Anatysls Date I By rng/L mdL mg/L mg/L mg/L mga mg/L mg/L mg/L mg/L mg/L pCi/L pCUL pCi/L I I I I T I I I I I I I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium tnnrio" /ruortey/ Magrnsium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrlte as N Pota$ium Sodium $rate / pnvstcal PRoPERTTES /onV solids, Totat Dissotued TDS @ 180 c METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIOT{UCLIDES . DISSOLVED TGross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MOC ND 149 514 103 0.6 167 ND 0.18 11.1 303 2360 6.47 6.u. 3580 mg/L 15.1 ug/L ND ug/L 3.22 ug/L ND ug/L 22 ug/L NO ug/L 46 ug/L ND ug/L 1560 ug/L ND ug/LND ugll 26 ug/L ND ug/L ND ug/L 0.82 ug/L ND ug/L 3.46 ug/LND Ug/L 38 ug/L 1.3 0.4 0.4 A2320 B A232OB E200.7 A4S(xlCl B A4500-F C E200.7 E350.1 E353.2 E200.7 E200.7 A4500-SO4 E E200.8 E200.8 E200.8 E200.7 E20A.7 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 06/09/08 13:39 I ljl 06/09/08 13:39 / ljl 06/19/0E 18:58 / cp 06/18/08 11:03/fi 06/10/08 13:32 / ljl 06/19108 '18:58 / cp 05/10/08 10:59 / eli-b AOl17l08 12:20 I eli-b 06i/19/08 18:58 / cp 06/19/08 18:58 / cp 06i/1 1/08 1 1:34 I sp I 1 0.52 1 0.1 0.50 0.05 0.05 0.50 3.8 30 0.01 10 5.0 0.50 0.50 2s 10 10 30 1.0 10 0.50 't0 20 5.0 10 0.50 100 0.30 15 10 A4500-H B 06/06/08 15:57/jh 42540 C 06/08,08 11.,26 I dd 06127108 18:54 / sml 06n7n818:34 / sml 0G12710818:54 / sml 06/1 9/08 1 8:58 / cp 06/19/08 18:58 / cp 06n7n818:54 / sml 06/19/08 18:58/cp 06127108 18:54 / sml 06/19/08 18:58 / cp 0612710818:54 / sml O6llZ7lOB 18:54 / sml O6l27lOE'18:54 / sml 06127n818:54 / sml 06n7n818:54 / sml 0612710818:54 / sml 06/1 9/08 l 8:58 / cp 06n7n818:54 / sml 06127lo818:54 / sml 06127108'18:54 / sml 06/30/08 13:54 I cnr 06/30/08 13:54 / cnr 06/30/08 13:54 / cru I I I Report RL - Analyte reporting limit. Deffnltions: eCL. eualig controt limit. MDC - Minimum detec'table concentration MCL - Maximum contaminant level. ND - Not detected at thc reporting limit. D - RL increased due to samplo matrix interferonce I EilEEcy LABORATORE-A Nc ' 2393 Satt creek Highway (82601) , p.o. Box sziS . caspu w se60p Toll Free 868.235.0515 ' 307.235.0515 ' Fax 307.234.1639 .'cisper@energytab.com , wwvuehergytab.cii- I I I Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08060292-006 MW28 Report DaG: 07/17108 Collection Date: 06/03/08 08:40 DateReceived: 06/06108 Matrix: Aqueous Amlyses Result Unlts Qualifiers RL MCUQCL Method Analysis Date / By I I I I I I I t I I T I DATAQUALITY 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 Chloromethana Methyl ethyl ketone Methylene chloride Naphthalene Tolu6ne Xylenes, Total Sun: 1,2-Dichlorobenz6ne-d4 Sur: bibromofl uoromethane Surr: pBromolluorobenzene Surr: ToluenMS -1.50 0/o 54.5 m€q/L 52.9 meq/L 3540 myL 1.0,| ND ug/L ND ug/LND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/L ND udLND ug/L 106 o/6REC l1',| %REC 93.0 %REC 97.0 %REC Calculation Calculation Calculation Calculation CelclJlation SW826OB sw8260B SW826OB sw8260B sw8260B sw8260B SW826OB sw8260B sw8260B sw8260B sw82608 SW826OB sw8260B SW8260B 06/20/0E 15:53 / lab 06/20/08 15:53 / lab 06/20/0E t5:53/lab 06/20/08 15:53 / lab OGl2An$15:53 / lab 06/09/08 19:46/jk 06/09/08 19:46 / jlr 06/09/08 19:46 / jlr 06/09/08 19:46 tjlr 06/09108 19:46 /jlr 06/09/08 19:46 / jlr 06/09/08 19:46 / jlr 06/09/08 19:46 / jlr 06109/06 19:46 /ih 06/09/08 19:46/ jlr 06/09108 19:46 / jlr 06109/08 l9:46 /jlr 06i/09/08 19:46 / jlr 06/09/08 19:46 I jlr 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 8().120 7&.130 80-120 6S.120 T I T Report Deltnltlons: RL - Analyb reporting limit. QCL - Quali$ control limit. MDG - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. \ I EllERaY LABoRAToRIEjq 1ry9: . 2393 salt creek Highway (8260t) , po. Box 3zs8 , caspet; wg260zTollFree888.235.0515 ' 307.235.05/5 ' Fax 307.234.1639 "casper@energytab.com.wwteitergylab.com I I I Client Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Gorp 2nd Quarter Semi-Annual Groundwater c08060292-007 MW29 Report Date: 07117108 Collection Date: 06/03/08 10:50 DateReceived: 06/06/08 Matrix: Aqueous AnalyseE Rosult Unlte Quallflers RL MCUQCL Method Analysls Date / By pCi/L pCi/L pCi/L I I I I I I T I I I T 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 Silvet Thallium Tin Uranium Vanadium Zinc RADIONUCLIDES, DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) Gross Alpha .ninus Rn & U MDC ND mg/L 321 mg/L 470 mg/L 38 mg/L 0.8 mg/L 218 mg/L 0.53 mg/L ND mg/L 16.8 mS/L 486 mdL 2840 mg/L 6.98 s.u.4190 mg/L ND ug/LND ug/L ND ug/L ND ug/L ND ug/L ND ug/L 1400 ug/L ND ug/L 5260 ug/L ND ug/L ND uSlL NO uglL NO ug/L ND ug/L ND ug/LND ug/L 10.3 ug/LND ug/L22 ug/L 1.1 0.4 0.4 42320 B 42320 B E200.7 44500-Ct B A4500-F C E20A.7 E3s0.1 E353.2 E200.7 E200.7 A4500-SO4 E E200.8 E200.8 E200.8 E200.7 E2AO.7 E200.8 E200.7 E200.8 E200.7 E200.8 E200.6 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 06/09/08 13:46 / ljl 06/09/08 13:46 / ljl 06/1 9/08 19:02 I cp 06/18/08 11:01 ltjt 06/10/08 13:35 / ljl 06/19/08 19:02 / cp 06/10/08 11:00/eli-b @117108 12:21 I eh-b 05/19/08 t9:02 / cp 05/19/08 19:02 I cp 06/11/OA 11 :40 I sp 1 1 0.52 1 0.1 0.50 0.05 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 t0 0.s0 100 0.30 15 10 44500-H B 06/06108 15:59/jh 42540 C 06/08/08 11:27 I dd 0612710819:00 / sml 0/5n7nB 19:00 / sml 4612710819:00 / sml 06/19108 19:02 / op 06i/19/08 l9:02 / cp OGnTnA 19:00 / sml 06/19/08 19:02 / cp OOnTnBl9:00 / sml 06/19/08 19:02 / cp 46i2710819:00 / sml 0612710819:00 / sml 0612710819:00 / sml 06127108'19:00 / sml 0612710819:00 / sml 0612710819:fl) / sml 06/19/08 19i02 I cp 06127108 19:00 / sml OGaZIOE 19:00 / sml 0612710819:00 / sml 06/30/08 13:54 / cnrv 06/30/08 13',54 lctw 06/30/08 13:54Icrw I T I Report RL - Analyte reporting limit. Deflnitlons: eCL - euatity conbol limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at th€ reporting limit. D - RL inc.eased due to sample matrix interference. I ENEBGY LABOBATORIES,_INC '_2393 Salt Creek Highway (82601) . PO. 1ox 3258 , Caspil WrAZ60Z Toll Free 888.2&L0515 ' 307.235.05/5 ' Fax 307.234.1639 .'casper@energytab.com , www,ehergytab.mi I I I LABORATORY ANALYTICAL REPORT Client: Project: Lab !D: Client Sample lD Denison Mines (USA) Gorp 2nd Quarter Semi-Annual Groundwater c08060292-007 MW29 Report Date: Collection Daie: DateReceived: Matrixr 07t17t08 06/03/0810:50 06/06/08 Aqueous Amlyses RBult Unib Quallfiers RL itcuQCL llethod Analysis Date, By I I I I I I I T I I I I DATA QUALITY A/C Balance (i 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzerp Carbon tetrachloride Chloroform Chloromethane Methyl ethy' ketone Methytene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene-d4 Sun: Dibromofl uoromethane Sun: p-Bromofl uorobenzene Sur: ToluenedS -1.92 0/o 65.5 meqA 63.0 meq/L 4230 mg/L 0.990 ND ug/L ND ug/L ND ug/L ND udL ND udL ND uS/LND uS/L NO uS/L ND uS/L ND ug/L 112 %REC 115 %REC 93.0 %REC 98.0 %REC Calculation Calculation Calculation Calculation Calculation sw8260B sw8260B sw8260B sw8260B sw82608 SW826OB sw8260B sw8260B sw8260B sw8260B sw8260B SW8260B sw8260B SW82608 0612010815:54 / lab 06120108 15:54 / lab 06/20/08 15:54 I lab 0620/08 15:54 / lab ffi12010815:54 / lab 06/09/08 2Q:21 I ilr 06/09/08 20:21 ljV 06/09/08 20:21 litr 06/09/08 20:21 ljk 0009/08 2O:21 ljlr 06/09/08 20:21 t jtr 06/09108 20:21 ljtr 06/09/08 20:21 ljtr 06/09/08 20:21 t jk 06/09108 20:21 t jlr 05/09/08 20:21 I ji 06/09/08 Zo:21 tjtr 061091082O:21 I jlr 06109/08 20:21 litt 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-130 60-120 80-120 I I I Repod RL - Analyte reporting limit. Deflnitionsr eCL - euality control limit. MDC - Minimum detectable concentration MCL - Maxinrum contaminant level. ND - Not detected at the reporting limit. I ENEBCY LABORATOHES, INC ' 2393 Salt Creek Htghway (82601) . PO. Box 3258 ' Caspet: W 82602TollFree888.235.05/5 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com'wwtueitergytab.om t I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08060292-008 MW 30 Report Da!e: 07l17lOB Collection Date: 06/03/08 13:10 DateReceived: 06/06/08 Matrix: Aqueous Arnlyses R$ult Units Oualifiers RL MCUQCL Method Analysis Date I By 0.8 pCi/L 0.3 pCi/L 0.4 pCi/L t I T I T I t T T t I t MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium Chloride /Ftuotide l,/ Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate ND mg/L 180 mglL278 mg/L 125 mg/L 0.4 mg/L 71.3 mgA ND mg/L'18.7 mg/L 7.29 mglL 109 mg/L U2 mg/L 7.51 s.u. 1500 mg/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L 135 ug/LND ug/L 49 ug/L ND ug/L ND uglL ND uq/L 30"5 ug/L ND uglL ND ug/LND ugL 6.86 ug/LND ug/L ND ug/L 42320 B 42320 B E2A0.7 44500-Ct B A4sOGF C E200.7 E350.1 E353.2 E200.7 E200.7 A4500-SO4 E E200.8 E200.8 E200.8 E200.7 E200.7 E200.8 E200.7 E200.8 E200.7 8200.8 E200.7 E200.7 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 06/09/08 '14:07 lljl 06/09/08 11i07 ttit 06/19/08 19:06 / cp 06/18/08 11:10/lil 06/10/08 13:37 I t1t 06/19/08 19:06 / cp 06/10/08'11:01 /eli-b OGl17l08 12:22 I elt-b 06/t9108 19:06 / cp 06/19/08 '19:ffi / cp 06/1 1/08 11i42 I sp 0612710819:07 / sml 06n7n8 19:07 l sml 06n710819:07 / sml 06/'19/08 19:06 I cp 06/19/08 19:06 / cp 06127n819:07 / sml 06/19/08 19:06 / cp A6/2710819107 / sml 06/19/08 19:06/cp 06,n7n819:07 / sml 06/19/08 19:06 / cp 06/19108 19:06 / cp 06,127108 19:07 / sml 06n7n819:07 I sml 06127108 19:07 / sml 06/19/08 19:06 / cp 06n7BB 19:07 / sml OGn7nB19:07 / sml 06,n7n819:07 / sml 06i/30/08 13:54 I cwv 06/30/0E 13:54 / crw 06/30/08 13:54 / cnrv 1 1 0.50 1 0.1 0.50 0.05 0.05 0.50 1.5 10 0.01 10 5.0 0.50 0.50 25 t0 10 30 1.0 10 0.50 10 20 s.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 44500-H B 06/06/08 16:05 /jh 42540 C 06/08/08 11:27 I dd -RADIONUCLIDES - DISSOLVED / Gross Alpha minus Rn & Uy' Gross Alpha minus Rn & U Precision (t) Gross Alpha minus Rn & U MDC I I I Roport Deflnltaons: RL - Analyte reporting limit, QCL - Quality contol limit. MDC - Minimum deteclable concentration MCL - Maximum contaminant level. ND - Not detec-ted at the reporting limit. D - RL increased due to sample matrix interference. I ENEqOY LABORATORIES, lNC, ' 2393 Salt Creek Highway (8260t) ' PO. Box 3258 ' Caspe| WY 82602 Toll Free 888.295.0515 , 307.235.0515 . Fax 307.234.1639 ' casper@energylab.com ' wvwenergylab.com I I T LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Glient Sample lD Denison Mines (USA) CorP 2nd Quarter Semi-Annual Groundwater c08060292-008 MW 30 Report Date: 07117108 Collection Date: 06/03/08 13:10 DateReceived: 06/06/08 Matrix: Aqueous Arnlyses Result Units Qualiflers RL MCUQCL Method Analysis Date / By I I I I I I I I I I I T DATAQUALIW A/C Balance (r 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOIATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetraehloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthabne Toluen€ Xylenes, Total Sun: 1,2-Dichlorobenzened4 Surr: Dibromofl uoromethane Sun: pBromofl uorobenzene Sun: Toluen+d8 -1.3t1 o/o 25.4 meq/L 24.7 meq/L 1610 mg/L 0.930 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 108 o/6REC 112 %REC 91.0 o/oREC 98.0 %REC 20 't.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 7G130 80-120 8G120 Calculation Calculation Calculation Calculation Calculation sw8260B sw8260B sw8260B sw8260B SW8260B sw8260B SWE26OB sw8260B sw8260B sw8260B sw8260B SW826OB SW8260B sw82608 06/20/08 15:54 / lab 06/20/08 15:54 / lab 06/20/08 15:54 / lab 06/20/08 15:54 / lab 06/20/08 15:54 / lab 06/09/0824:57 tjk 06/0908 2A:57 I jlr 06/09/08 20:57 t jlr 0d09/08 20:57 / jh 0d09/08 20:57 / jlr 06/09/08 20:57 lllr 06/09/08 20:57 / jlr 06/0948 20:57 I jlr 06/09/08 20:57 / jlr 06/09/08 20:57 /jlr 06/09O8 20:57 / jlr 06/09/08 20:57 / jlr 06/09O8 20:57 / jlr 06/09O8 20:57 / jlr I I I Repo( RL - Analyte reporting limlt. Deflnltlons: eCL - euality confol limit. MDC - Minlmum detedable concentration MCL - Maximum contaminant level. ND - Not detected at th6 reporting limit. I E^fiEBGY LABOBATOBIES, lNC. '2393 Salt Creek Htghway (82601) ' P.O. Box 3258 ' Caspet W82602 Toll Free 8ffi.235.05t5 . 307.235.0515 , Fax 307,234.1639 ' casper@energylab.com ' wwwenergylab.com I I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Qua(er Semi-Annual Groundwater G08060292-009 MW31 Report Date: 07l17lAB Collection Date: 06103/08 15:45 DateReceived: 06/06/08 Matrix: Aqueous Analyses Resull Units Quallfferc RL MCUQCL Method Analysis Date / By I I t I I T I T I I I I TUIAJOR IONS Carbonate as CO3 /Bicarbonateas HCO3,/ c.r"iuY chtoride Fluodde Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate ND '197 163 128 0.9 80.8 NO 29.3 5.96 93.7 514 7.65 s.u. 1180 mg/L ND ug/L ND ug/L ND ug/L ND ug/L ND uS/L ND uS/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L 55.3 ug/L ND ug/L ND ug/L ND ug/L 6.95 ug/LND ug/LND ug/L t.3 0.,4 0.4 A2320 B A.2320 B E200.7 A4500-ct B A45@F C E200.7 E350.1 E353.2 E200.7 E200.7 A4500-SO4 E 06/09/0814:13/ ljl 06/09/08 14:13 / ljl 06/19/08 19:10 / cp 06/18/0811:15/fl 06/10/08 13:40 / ljl 06/19/08 19:10 / cp 06/10/08 11:02 / eli-b OGllTlOB 12:24 leli-b 06/19/08 19:10 / cp 06/19/08 19:10 / cp 06/1 1/08 1 1:45 / sp 06n7n819:'14 / sml 06127n819:14 / sml 06127n819:14 / sml 06119/08 19:10 / cp 06n9/08 19:10 / cp AOWn819:14 / sml 06/19/08 19:10 / cp 0612710819:14 / sml 06/19/08 19:10 / cp 06127n819:14 / sml 06/19/08 19:10 / cp 06/19/08 19:10 / cp A012710819:14 / sml 0612710819:14 / sml OOl27l0E 19:14 / sml 06/19/08 19:10 / cp 0612710819:14 / sml o6127n819:14 / sml O6127t08 19:14 / sml 06/30/08 13:54 / crw 06/30/08 13:54 / crw 06/30/08 13:54 / crw mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L 1 1 0.50 1 0.1 0.50 0.05 0.05 0.50 1.5 6 0.01 10 5.0 0.50 0.s0 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 E240.7 E.200.7 E200.8 E200.7 E200.8 E200.7 E200.8 E200.7 E200.7 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900.1 E900.1 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 fiallium 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 06/06/08 16:t0/jh A2540 C 06/0U08 11:28 I dd pCi/L pCi/L pCi/L I I I R6port Definitlons: RL - Analyt€ reporting lirnit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant l€vel. ND - Not detocted at the repoding limit. D - RL increased due to sample makix interference. I ENERCY LABOqATORIES, tNC. . 2393 Salt Creek Highway (52il1) ' P.O. Box 3258 ' Caspei WY 82602 rZiiFiiiaa.ies,(isii : sziisg.osts . Fax 302.2s4. t039 .'cisper@energylab.com ' www.energylab.com I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) CorP 2nd Quarter Semi-Annual Groundwater c08060292-009 MW31 Report Date: Collection Date: DateReceived: Matrix: 07117108 06/03/08 15:45 06/06/08 Aqueous t Result Unlts Qualillere RL MCUQCL Method Analysis Date / ByAnalyses I I I t I I I I I I I t DATAQUALIW A/G Balance (t 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIG COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Mehyl ethyl ketone Mefiylene chloride Naphthalene Toluene Xrenes, Total Surr 1,2-Dichlorohenzened4 Surn Sun: pBromofluorobenzene Sun: Toluene.dS -r.65 19.7 19.0 1220 0.970 ND ND ND ND ND ND ND ND ND ND 109 110 93.0 97.0 o/o meq/t meq/L mg/L Calculation Calculation Calculation Calculation Calculation sw82608 SW826OB sw8260B sw8260B sw8260B SWE26OB sw8260B sw6260B SW8260B SW826OB sw8260B sw8260B SW8260B SWE26OB 06/20/08 15:54 / lab 0520/08 15:54 / lab 06/20108 15:54 / lab 06120/08 15:54 / lab 06/20/08 15:54 / lab 06/09/08 21 :32 / jlr 05/09/08 21:32 / jk 06/09/08 21:32 / jlr 06/09/08 21:32 / jlr 06/09/08 21 :32 / rk 06/09/08 21'.32 lilt 06/09/08 21'.32 tti 06/09/08 21:32 ljtt 610910821:32 I itr 0d09/08 21:32 / jlr 06/09/08 21:32 l jk 06/09108 21:32 lilr 06109/08 21:32 I ilr 06/09/08 21:32lilr ug/L ug/L ug/l- ug/l- uga ug/L uglL ug/L ug/L ug/L o/oREC o/oREC o/oREC %REC 20 ,l.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 8G120 70-130 80-120 8o-120 I I I R6port RL - Analyte reporting limit. Deffnitlons: eCL - euality conlrol limit. MDC - Minimum detectable con@ntration MCL - Maxirnum contaminant le\rel. ND - Not detected at the reporting limit. I --ENERGY LABORAnORES,^|y9: . 2J9S Satt Creek Hjg-hway @2601) , pO. Box |ZSA . Caspeti WAp602Tolt Free 088.p3i.05/i ' s0ziai.ois-:-ri1bv5il fiJl . casper(ienergytab.com . wwtuenergytab.com t T t LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08060292-010 MW32 Report Date: OlllllO1 Collection Date: 06/05/0g 08:05 DateRecelved: 06/06/08 Matrix: Aqueous Analysos Flosult Units Quallfierc RL MCUQCL Method pCi/L pCi/L pCilL T t T T T T I T I T t t T T T Analysie Date I By MA.'OR IONS Cadonate as CO3 ficarbonate as HCO3 / Calcium / Chtoride , / FluorideY Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Poiassium Sodlum Sulfate ND 407 529 32 0.2 234 0.50 ND 14.6 232 2430 6.59 s.u.3550 mg/L ND ug/L ND ug/L2.21 ug/LND uC/L42 ug/LND ug/L 8650 ug/LND ug/Lil00 ug/L ND ug/L10 ug/L62 ug/LND ug/LND ug/LND ug/LND ug/L 3.05 ug/LND ug/L125 ug/L 423208 42320 B E200.7 44500-ct B 44500-F C E200.7 E350.1 E353.2 E200.7 E200.7 A,i500-SO4 E 06/09/0E 14:20 t tjt 06/09/08 14:zO il)t 06/19108 19:14 I cp 06/18/08 11:2,t iljt 06/10/08 13:43 / ljt 06/19/08 tg:14 / cp 06/10/08 11:03 / eti-b OAllTlOA 12:39 / eti-b 06/19/08 19:14 I cp 06/19/08 19:14 t cA 06/1 1/08 12:03 / sp 06n7nA 19:41 /smt 0612710819:41 /sml 08127t0819:41 /smt 06/19/08 19:14 / cp 06/19/08 19:14 / cp 0612710819:4, / sml 06/19/08 19:14 I cp 06127t08 19:41 / smt 06/19/08 19:14 t c,p O6l27tOA 19:4i /smt 0612710819:41 / smt A6E7iA819:41 /sml OGl27l08 'lg:41 /smt O8127fi819:41 tsmt 0612710819:4f / smt 06/19/08 t9:14 / cp 0612710819:4.t /smt OOl27l0B 19:41 /smt 0612710819:41 /smt 06/30/08 13:54 / cruv 06/30/08 13:54 I cwv 06130/08 13:54 /cnv D D mg/L mg/L mS/L mg/L mg/L mg/L mS/L mg/L mglL mglL mg/L 1 1 0.52 1 0.1 0.50 0.05 0.05 0.50 3.8 60 0.01 10 5.0 0.50 0.50 25 10 t0 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 E200.8 E200.7 E200.8 E2A0.7 E200.8 8200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E900..1 E900.1 E900.1 PHYSICAL PROPERTIES pH Solids, Totat Dissotved TDS @ t80 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 44500-H B 06/06/08 16:11 tjh 42540 C 06/08/0A 11:ZB I dd 3.5 0.6 0.4 RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detec-table concentretion MCL - Maximum contaminant level. ND - Not detected at the reporting timit. D - RL increased due to sample matrix interference. ENEflGY LABonAToBlEg lNC. . p393 satt creek Htg^hway (s260t) . p.o. Box o2i8 . caspe4 wyg260eToll Free 888.2ii.0515 ' s2z.zs5.oso . nx eoi.ese.fi1g :ciiii<ieii6yh:;con . wwwenergytab.com Client: Proiect: Lab lD: Client Sample lD LABOMTORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater /c08060292-010 /MW32 / Report Da|e.: 07117108 Gollection Date: 06/05/08 08:05 DateReceived: 06/06/08 Matrix: Aqueous AmlyseE Regult Unlts Qualifiers RL MCUQCL Method Analyrls Date / By PATAQUALITY //Nc}atan(E (*,5', l/ Anions Cations Solids, Total Dissolved Calculated TDS Balane (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS / Acetone / Benzene I / Carbon tetrachloridEv chloroform Chloromethane Methyl ethyl ketone Mehyl€ne chloride Naphthalene Tolueno Xylenes, Total Surr: 1,2-Dichlorobemen+d4 Sun: Dibromofi uoromethane Su rr: p-Bromofl uorobenzene Sun: Toluene-d8 -1.71 0/o 58.1 meq/L 56.2 meCL 3680 mg/L 0.960 ND ug/L ND ug/LND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/LND ug/L ND ug/L108 %REC 108 ToREC 92.0 ToREC98.0 %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-130 80-120 EO-120 Calculation Calculation Calculation Calculation Calculation SW8260B sw8260B sw62608 SW8260B SWE2608 sw8260B sw8260B sw8250B sw8260B SW826OB sw8260B SWE26OB SW626OB sw8260B 06/20108 15:54 / tab A6l20l0E 15:54 / lab 06/2008 15:54 / lab 06/20/08 15:54 / lab 06/20/08 15:54 / lab 06109t0622:07 t itr 06/09/08 22:07 I itt 06/09108 22i07 t jE ffinsn822:07 t jh 06/09/08 22:07 tilr 06/09/08 22:07 tilr 06109/08 22:07 t itr 0610910822:07 t jlr 06/09/08 ?2:07 litr 06/09/08 22:07 lilr 06/09/08 22:07 ljlr 06,109t0822:07 tilr O6109108 22:07 t jlr 06/09/08 22:07 tit Report Doflnltions: RL - Analyb reporting timit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not dgtected at the repoding lirnit. I ENERCY LABORATORIEi lNC. . 2393 Salt Creek Highway (82601) ' P.O. Box 3258 ' Caspet WY 82602 Toll Free 888.235.0515 , 307.235.0515 . Fax 307.234.1639 ' casper@energylab.mm ' wwwenergylab.com I T I LABORATORY ANALYTICAL REPORT Cllent: Project: Lab lDr Client Sample lD Denison Mines (USA) Corp / 2nd Quarter Semi-Annual Groundw#r c08051285-006 /MW6o / ai*,-Report Date: 07/07/08 Collection Date: 05/28/08 10:32 DateReceived: 05/30/08 Matrix: Aqueous Analyses Result Units Qualifiers RL MCU QCL Method Analysis Dlte / ByI I I T I I I I T I I I MA.IOR 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 Vanedium Zinc RADIONUGLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (r) Gross Alpha minus Rn & U MDC 7.25 199 1 1 0.50 1 0.1 0.50 0.05 0.05 0.50 0.76 1 ND mg/L 218 mg/L 5.18 mg/L 25 mg/L 0.4 mg/L49.2 mg/L ND mg/L 0.20 mg/L 6.81 mglL 16.9 mg/L ND mgA 5.0 0.50 0,50 2s 10 't0 30 1.0 10 0.50 10 20 5.0 10 0.50 100 0.30 't5 10 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 ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND uS/L s.u. mglL 0.01 10 42320 B A.232AB E204.7 A4500-Ct B 44500-F C E.200.7 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 A4500-H B 05/30/08 16:26/jh A2540 C 06/02/08 09:20 / dd 06/03/08 14:52 ttit 06/03/08 1a:52 ttjl 06/09/08 20i4'l I cp 06/09/08 13:20 I $l 06/04/08 14:06 / ljl 06/09/08 20:41 I cp 06/05/08 08:30 / eli-b 06/09/08 13:10 / eli-b 06/09/08 2A:41 I cp 06/09/08 2O:41 I cp 06104108 10:10 / sp 06/11/08 07:28 / sml 06/11108 07:28 / sml 06/11108 07:28 / sml 06111/08 07:28 / sml 06/11/08 07:28 / sml 06/1 1/08 07128 I sml 06/09/0E 2Oi41 I cp 06/1'll08 07:2E / sml 06/11108 07:28 / sml 06/11/08 07:28 / sml 06/11/08 07:28 I sml 06/11/08 07:28 / sml 06/1 1/08 07:28 / sml 06/11/08 07:28 / sml 06/11/08 07:28 / sml 06/11/08 07:28 / sml 06/11/08 07:28 / sml 06/11l08 07:28 / sml 06/11108 07:28 / sml 06/16/0E 12:'13 / cnv 06/18/08 12'.13 I crw 06/18/08 12:13 I crw 0.5 pCi/L 0.3 pCi/L 0.3 pCi/L I t I Report RL - Analyte reporting lirllit. Deflnltlons: eCL - euality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the repoding limit. D - RL increased due to sample matrix interference. T ENEBGY LABORATORIES, lNC. ' 2393 Salt Creek HEhway (82601) ' P0. 1ox 3258 ' Casper W82602 TollFree888.235.0515 , 302235.0515 ' Fax 307.234./639 ' casper@energylab.com'www:energylab.mm I t I Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp ,1,r, ,ll 2nd Quarter Semi-Annual Groundwater / l'' ' ,, . rLc08051285-Oo6 / lS lnt'*MW6o / Report Date: 07/07/08 Collection Date: 05/28108 10:32 DateReceived; 05/30/08 Matrix: Aqueous Analyses Result Units Qualifiers RL MCUOCL Method Analysis Date / By % meq/L meq/L mg/L 9.63 4.30 5.22 I t I I t I I T t T I t DATA QUALITY A/C Balance (* 5) Anions Cations Solids, Total Dissolved Calculated 219 TDS Balance (0.80 - 1.20)0.910 - The Anion / Cation balance was confirmed by re€nalysls. VOLATILE ORGANIC COMPOUNDS Acetone ND Fenzene ND / Carton tetrachlodde ND / cnorolorm 2.9 , / Chloromethane NDV Methyl ethyl ketone ND Methylene chloride ND Naphthalene ND Toluene ND Xy'enes, Total ND Sun:1,2-Dichlorobenzene-d4 108 Sun: Dibromofluoromethane 108 Sun: p-Bromofluorobenzene 95.0 Surr: Toluene-d8 100 ug/L ug/L ug/L ug/L ug/L ug/L ug& ug[ 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 80-120 70-130 80-1 20 80-l 20 Calculation Calculation Calculation Calculation Calculation sw8260B sw82608 sw8260B sw82608 SW82608 SW8260B SW826OB sw8250B sw8250B sw8260B sw8260B sw8260B sw8260B sw8260B 06/19/08 10:24 I sw 06/19/08 10,'24 t sw 06/19/08 10:24 / sw 06/19/08 10:24 / sw 06119/08 1A'.24 lsw 06102108 14:49 lilt 06/0208 14:49 t jtt 06/02108 14:49 t jtr 06/02i08 14:49 lilr 06t02108 14:49 I ilr 06/02/0E 14:49 I jlr 06/02/08 14:49 I jlr 06t02t08 14:49 lift 06/02/08 14:49 I itr 06/02/08 14:49 t jtr 06l02l0e 14:49 tjk 06/0208 14:49 tjtr 06t02to8 14"49 ljE 06n?i08 M:49 ljtr t t T Report RL - Analyte reporting limit.Definitlons: eCL - euality control limit. MDC - Minimum detectable concentration MCL - Maxinum contaminant level. ND - Not detected at the repofting limit. I ENERcy LABOPATORIES,-Ni . psg? salt creek flqlway (s2601) . p.o. Box J2i8 . caspet w az60zTo/tFree8ffi.235.05t5 ' s07.2s5.05t5 ' Far na7.eai.tb1i :c{speideiiiglyE:;com.ww,uenerilab.com T t I LABORATORY ANALYTICAL REPORT Client: Projeet: Lab !D: Client Sample lD b0, frl'*" Denison Mines (USA) Corp 2nd Quarter SemLAn nual Groundwater c08060292-01 1 MW 65 Report Date: 07l17lOB Collection Date: 06/05/08 08:05 DateReceived: 06/06/08 Matrix Aqueous Analyses Result Unlts Quallflerc RL MCUQCL Method Analysis Date / By pCi/L pCuL pCi/L I T I I I I t I t T I I I t T MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium Chlorlde Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate PHYSICAL PROPERTIES pH Solids, Total Dissotved TDS @ 180 C METALS . DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Gopper laon 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/L 404 mg/L533 mg/L33 mS/L 0.2 mg/L238 mg/L 0.50 mg/L ND mg/L 14.6 mg/L 236 mg/L 2420 mg/L 6.68 s,u. 3530 mg/L ND ug/LND ug/L 2.19 ug/L ND udL43 ug/L ND ug/L 8580 ug/LND Ug/L 5450 ug/L ND ug/L 11 ug/L63 ug/L ND ug/L ND uS/LND ug/L ND ug/L 3.00 u/LND ug/L124 ugll AQ32OB 42320 B E200.7 44500-Ct B 44500-F C E200.7 E350.1 E353.2 e200.7 E200.7 A4500-SO4 E 1 1 0.52 1 0.1 0.50 0.05 0.0s 0.50 3.8 60 0.01 10 5.0 0.50 0.50 z5 10 10 30 1.0 10 0.50 10 2A 5.0 10 0.50 100 0.30 15 10 E200.8 E200.8 8200.E E200.7 E200,7 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900.1 E900., A4500-H B 06/06/08 t6:13/jh 42540 C 06/08/09 11:ZA t dd 06/09/08 14:27 ltit 06/09/08 14:27 ttit 06/1 9/08 1 9:30 / cp 06/18/08 11:26 I lil 06/10/08 13:53 / ljl 06/1 9/08 1 9:30 I cp 06/10/08 11:il/eti-b 06117108 12:40 I eti-b 06/19/08 19:30/cp 06119/08 19:30 / cp 06/11/08 12:08/sp 06127108 20:01 / smt 06127108 20:01 / smt 06,12710820il I smt 06/19/08 19:30 / cp 06/19/08 19:30 / cp 06127108 20:01 / sml 06/19/08 19:30 / cp 06127t08 20:01 / smt 06/19/08 19:30 / cp 0612710820:01 /smt AOl27l08 20:01 / sml OG12710820i01 lsmt 0612710820;01 lsmt AGl2Tng 20:01 / smt O6li27lOA 20:01 / smt 06/19/08 19:30 / cp OGl27lO8 20:0'l /smt OG|2T|OB 20:01 / smt AGl27l08 20:0'l /smt 06/30/08 15;45 t ctw 06130/08 15:45 / crw 06/30/08 15'.45 I cw I 2.4 0.5 0.4 Report Deflnitlons: RL - Analyte reporting limit. QCL - Quality controt limit. MDC - Minimum detectable con@ntration MCL - Maximum contaminant level. ND - Not detec{ed at the reporting limit. D - RL increased due to sample matrix interference. t ENEEGY LABoBAroBEs, -tlrg: - 2393 salt creek Highway (82601) . p.o. Box gpSa . casper yw 0a602TotFree888.p35.05t5 . s2z.isi.osrs ;-rai aloiisa.iiis':r)"i;;ciei;6yai;;or. wwaenersytab.com I I Client: ProJect: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundualer ,,c08o6o2e2-011 / MW 65 ,-/ LABORATORY ANALYTICAL REPORT \o^(\'Report Date: 07117t08 Collection Date: 06/05/08 08:05 DateReceived: 06/06/08 Matrlx: AgueousI Analyses Result Units Quallflsrs RL MCU QCL Method Analysls Date / By o/o medL meq/L mg/L T I t T t I T T I T I T t t T PATAAUALTTY /A/C Balance (t 5) , / Anion" l/ c"tion Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Bfnzcne parbon tetrachloride ,/Chloroform,/ chloromethane(-/ Methyt ehyr ketono Methylene chlodde Naphthatene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzened4 Sun: Dibromofl uoromethane Sun: p-Bromofl uorobenzene Surr: ToluenedE -0.911 57.9 56.9 3580 0.960 Calculation Calculation Calculation Calculation Calculation sw8260B SWE260B SW826OB sw8260B sw8260B SW826OB sw82608 sw82608 SW82608 sw82608 sw82608 sw8260B SW82608 sw8260B 06120n815:54 / tab 06/20/08 15:54 / tab 46nU0815:54 / tab 06/20/08 15:54 / lab 06/20/08 15:14 I tab 06/09/0E 16:15/jh 06/09/0E 16:15 /jk 06/09/08 16:15 /jk 06/09/08 15:15 /jtr 06/09108 15:15 /jh 06/09/08 16:15 /jtr 06/09/08'16:15 / jtr 06/09/08 16:15/jtr 06/09/08 16:15 /jtr 06/09/08 16:15 t itr 06/09/08 16:1s/jtr 06/09/08 't6i15 t jtt 06/09/08 16:15/jh 06/09/08 16:15 /jk ND ug/LND ug/LND uS/L ND ug/L Ir{D ug/LND ug/L illD ug/L ND ugLND ug/L ND ug/L111 %REC114 ToREC92.0 70REC 99.0 %REC 20 1.0 1.0 1.0 1.0 20 1.0 ,.0 1.0 1.0 80-120 70-130 80-r20 80-120 Report Oeflnltlons: RL - Analyb reporting limit. QCL - Ouetity contol limit. MDC - Minimum detedable concentration MCL - Maxlmum contaminant level. ND - Not detec.ted at the repoding limit I ENEfrGY LABOaATOilEA NC. ' 2393 Salt Creek Highway (82601) . PO. Box JZ1S . Casper; Wy Ae60ztotl Free 888.215.0st5 . soz.iai.osrs : iai sbi.isa,i6ii': ;ri;drii;cy;b.n, . wwwenersytab.com T I I LA BORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Grou/rdwaterc08051285-o0s /MWT0 v c b0 ,'-, hv't r Report Da!'re: 07l07BB Collection Oate: 05/28/08 14:40 DateReceived: 05/30/08 Matrix: Aqueous Analyses Result Units Quallfiers RL MCU QGL Method Analysis Date / ByI T I t I t T T T T T T t t T MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium Chloride Fluoride Magnesium Nihogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sufate /' PHYSTCAL PROPERTIES /pH ND 461 379 30 0.3 191 ND 0.53 12.4 644 2580 7.'13 s.u. 4060 mg/L ND ug/LND ug/L ND ug/LND ug/L ND ug/LND ug/L ND ug/L ND ug/L100 ug/L ND ug/L ND ug/LND ug/L8.1 ug/L ND ug/LND ug/LND ug/L 29.3 ug/LND ug/LND ug/L 423208 A232OB e20a.7 A4sm-Ct B A4500-F C E200.7 E350.1 E353.2 E200.7 E200.7 44500-S04 E 06/03/08 14i45 I til 06/03108 14:45 ltlt 06/09/08 20:37 t cp 06/09/08 13:17 I tjt 06/04/08 13:54 I tjt 06/09/08 20:37 I cp 06/05/08 08:29 / eti-b 06/10/08 10:55 / eti-b 06/09/08 20:37 I cp 06/09/08 20:31 I cp 06/04/08 10:07 / sp 06/11/08 07:00 I smt 06/11/08 07:00 / smt 06/1 1/08 07:00 / smt 06/11/08 07:00 / smt 06111108 07:00 / smt 06/11/08 07:00 / smt 06/03/08 20:31 I cp 06/1'll08 07:00 / sml 06/09/08 20:37 I cp 06/11/08 07:00 / smt 06/11108 07:00 / smt 06/11/08 07:00 / smt 06111108 07:00 / smt 06/1 1/08 07:00 / smt 06/1 1/08 07:00 / sml 06/1 1/08 07:00 / smt 06/1 1/08 07:00 / smt 06/11/OB 07;00 / smt 06/11/08 07:00 / smt 06/18/08 12:13 I crw 06/18108 12:13 tcrw 06/18/08 12:13 I cw mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L 1 1 0.52 1 0.1 0.50 0.05 0.05 0.50 3.8 30 0.01 10 5.0 0.50 0.50 25 10 10 30 't.0 10 0.50 10 20 5.0 10 0.s0 100 0.30 15 10 Solids, Total Dissotved 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 rninus Rn & U Gross Alpha minus Rn & U precision (t) Gross Alpha minus Rn & U MDC Report Deflnitions: 44500-H B 05/30/08 16:24 t jh 42540 C 06/02/08 09:20 / dd 1.1 0.4 0.3 pCl/L pCi/L pCi/L E200.8 E200.8 E200.8 E200.8 E200.8 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 E200.8 E900.1 E900.1 E900.1 RL - Analyte reporting limit. QCL - Quality conkol timit. MDC . Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. D - RL increased du6 to sample matrix interference. I ENEacr LABaRATOREa tNC. . 2393 sa/t creek Hlg-lway (se60t) , p.o. Box szil . caspet; tw a2602rolt Free888.2rs.0st5 . s07.is5.ons-:-ii i:oi.iii.itiis : r;ZiZi(irii;cyhi;crr. wwtuenersylab,com I I t LABORATORY ANALYTICAL REPORT Client: Project: Lab lD; Client Sample lD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08051285-005 MW 70 uo^;l''Report Date: Collection Date: DateReceived: Matrix: 07t07108 0512810814:40 05/30/08 Aqueous Analyses Result Units Qualifiers RL MCU QGL Method Analysis Oats, By Yo meg/L meq/L mg/L t t t T I I T T T I T T DATA QUALITY /A/C Balance (r 5) ./ Anions/ c^tion* Solids, Total Dissolved Calculated TDS Balance (0.80 - .l.20) VOLATILE ORGANIC COMPOUNDS Acetone y'"n "n"/ Carbon tekachloride g/ Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluane Xylenes, Total Sun: 1,2-Dichlorobenzened4 Surr: Dibromofluoromethane Sun: p-Bromofluorobenzene Sun: Toluene-d8 0.367 62.5 62.9 4080 1.00 ND ND ND ND ND ND NO ND ND ND 108 113 92.0 99.0 ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L uglL %REC %REC %REC %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-l 30 80-120 80-120 Calculation Calculation Calculation Calculation Calculation SW8260B sw8260B SW826OB SW826OB SW826OB sw8260B sw82608 SW826OB sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B 06/10/08 15:09/jc 06i10/08 15:09 tjc 06/10/08 15:09 ljc 06/10/08 15:09 / jc 06/10/08 15:09 /jc 06/02/08 '17:10 ljtr 06/02/08 17:10 t jtr 06/02/08 17:10 t jtr 06/02/08 17:10 I jtr 06/02/08 17:10 t itt 06102t08 17:10 t jtr 06t02t08 17:1o t jtr 06/02/08 17:10 t itr 06/02/06 17-.10 tik 06/02/08 '17:10 ljk 06/02/08 17:10 t itr 06t02t08't7:10 tjtr 06/02/08 17:10 t jtr 06102t0817:10 tjtt T T t Report Definitions: RL -Analyte reporting limit. OCL - Quality conhot timit. MDC - Minimum detectable conc€ntration MCL - Maximum contaminant level. ND - Not detecled at the reporting limit I ,1ftr:{'#f'?i:f{%f,2i{fi,;f i,flig:;;l #g!-![f:,y,a;i8 E:;,,"ffr.,,f,f;f:iafff1,,:, T I T Client: Project: Lab lD: Client Sample ID Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08061004-008 MW 75 Report Date: 07t2llA| Gollection Date: 06i18/og 09:52 DateReceived: O6l20t0B Matrix: Aqueous Analyses LABORATORY ANALYTICAL REPORT B0 "? /nN'5 Result Units Qualifiers RL MCUQCL Method Analysis Date / By pCi/L pCi/L pCi/L I I I T I I I I T I t I T t T MAJOR IONS Carbonate as CO3 ,, Bicarbonat€ as HCO3 ' carciu, Chloride Fluoride Magnesiurn Nikogen, Ammonia as N Nihogen, Nitrate+Nitrite as N Potassium Sodium Sulfate NO mg/L 361 mg/L137 mg/L48 mg/L0.9 mg/L37.9 nE/L0.51 mg/L ND mg/L7.7 mg/L 503 mg/L1110 mg/L 7.70 s.u.1910 mgA ND ug/LND ug/L ND ug/LND uglLND ug/L ND ug/L 58 ug/LND ug/L255 ug/LND ug/L ND ugAND ug/L ND ug/LND ug/LND uS/L ND ug/L ND ug/LND ug/LND ug/L 06/26/08 11:26 iljt 06126/08 11:26 ttlt 0710810820:26 I cp 06/26/08 16:25 t tjt 06nsn814:83 / tjt 0il0810820:26 tcp 07/09/08 11:06 / eti-b 07103108 11:17 I eh-b 0710810820:26 I cp 0710810820:26 I cp 0612510816:35 / sp D D 1 I 0.5 1 0.1 0.5 0.05 0.05 0.5 4 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 E200.7 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900., E900.1 423208 42320 B E200.7 A4500-ct B A4500-F C E200.7 E350.1 E353.2 E20A.7 E200.7 44500-so4 E PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ 1gO C METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybclenum Nickel Selenium Silver Thallium Tin Uraniurn Vanadium Zinc MDIONUCUDES. DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U precision (r) Gross Alpha minus Rn & U MDC A45@H B o6tZ3tOB t2:03 t lhA25lO C 06/23108 09:41 I dd 1.2 o,4 o.4 07t17108 19:43 / ts 07117108 i9:43 / ts 07t1710819:43 / ts 07117108 i9:43 / ts 07108108 20.26 t cp 0711710819:43 / ts 07lA8nB20,,26 I cp 0711710819:43 / ts 0110810820:26 I cp O7l17lOA t9:43 / ts 0711710819:43 / rs 07t1710819:43 / ts 07t1710819:43 / ts 0711710819:43 / ts 07117108 19:43 / ts 07nA0820,'26 t cp O7l17lO8 t9:43 / ts O7l17lOA 19:43 / ts OtllTnB 19:43 / ts 07/08/08 19:41 / cnfl 0710810E tg:41 i crw 0710810819:41 / cnrlr Report Deflnitions: RL - Analyte reporting limit. QCL. Quatity controt timit. MDC - Minimum delectable concontralion MCL - Maximum contaminant level. ND - Not detec-tecl at the reporting limit. D - RL increased due to sample matrix interference. I ,:f FEf {#?,?8f,,?g72,yf;,;,r?,r%?:;;lHg!.:,#ig"3;:;3,Ei"ltrr#:ff ;ff 1str, T T T LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample tD Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwatqrc0806100+008 / MW 75 _/ A?D u?, hw'5 Report Datc: AlDltOg Collection Date: 06/18/08 09:52 DateReceived: 06t2Oteg Makix: Aqueous Analysee MCU QCL Method Analysis Date, By Reeult Unlts Qualiflers RL T T T DATAQUALITY 4rc Bahnce (r s) Anions l/c.tton" Solids, Total Dissolved Calculated TDS Batance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone 2.63 aa 30.4 meq/L 32.1 meq/L2030 mdl 0.940 ND ug/LND uS/LND ug/LND ug/LND ug/LND ug/LND ug/LND ug/LND ug/LND ugA 116 ToREC122 %REC109 ToREC !,4.0 %REC Calculation Calculation Calculation Calculation Calculation sw82608 sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B SW626OB sw8260B sw8260B SW826OB sw8260B 071111081S:20 / sw O7n1n81S:20 / sw 07111108 1S:2e I sw 0711110815:20 / sw 071111081S:20 / sw 06D310819:34 / dkh 0612310819:34 / dkh 0612310819:34 / dkh 0612310819:34 / dkh 06/23108 19:34 / dkh 0612310819:34 / dkh 06123t0819:34 / dkh 0612310819:34 / dkh 06123t08 19:34 / dkh 06n3n819:34 / dkh 06123108 19:34 / dkh 06t231A819:34 / dkh 0612310819:34 / dkh M12310819:34 / dkh I jt'*k":""" 20 1.0 1.0 1.0 1.0 2A 1.0 1.0 1.0 1.0 80-120 70-r30 8G120 8G120 T I I I T I T T Melhyl ethyl k€tone Methylene chloride Naphtha16ne Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene-d4 Sun: Oibromofluoromethane Surr: p-Bromofl uorobenzene Sufl: Toluene.dg T T I l"port RL - Analyte reporting timit.Definitions: ocL - ouaritv controt timit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit.MDC - Minimum detectable concentration T - EltlERoY LABoRAT0RIE9, INC- ' 2393 salt Creek Highway (szont) . po. Box 3258 . Caspet Wyg2602To//Free888.235.05t5 ' s07.i35.0ors . Fai sbi.iii..,63e :AipiidriircyE:1;.com.wwweneryytab.com t T T Glient: Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08051285-009 Trip Blank Report Date: 07/07i08 Collection Date: 05/29108 DateReceived: 05/30/08 Matrir: Aqueous Analyses Result Units Qualifiers RL MCU QCL iilethod Analysis Date / ByI I T T t T t T T T T T T T T 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/LND ug/L ND ug/LND ug/LND ug/L ND ug/LND ug/LND ug/L106 %REC 1O7 %REC87.0 ToREC 96.0 %REC 20 1.0 1.0 1.0 1.0 20 1.0 t.0 1.0 't.0 80-120 70-1 30 80-120 80-120 sw8260B sw8260B SW826OB sw8260B sw8260B SW82608 sw8260B sw8260B sw82608 sw8260B sw8260B sw8260B SW8260B SW82608 06102/08 13:03 / jlr 06t0210813;03 / jlr 06/02/08 13:03 /jtr 06$2108 13:03 / jtr 06t0U08 13:03 / jtr 06/02/08 13:03 /jtr 06/02/08 13:03 /jtr 0610U08f3:03/jlr 06to2108 13:03 / jtr 0610210813:03 / jtr 06102rc8 13:03 / jtr 06t021o813:03 / jtr 06102t08 13:03 / jtr 06102t08 13:03 tik Report Definitions: RL - Analyte reporting limit. QCL - Quality conhol limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. T EfFtr{'#i,trf{%f,2,rf;,;,rr,fllg5;f itrg!-1l1i3,3i,i;3,trtrr_,f,fifs[;fJi,1tr, T T T Client: ProJect: Lab lD: Cllent Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08060292-012 Trip Blank Report Dafrl- 07l1lt0| Collection Date: 06/05/0g 08:05 DateReceived: 06/06/08 Matrix: Aqueous Analyses lrlCU QCL Me0rodRcsult Units Qualifiers RL T t T T T t I T T T T I T t I VOLATILE ORGANIC COMPOUNDS Ac6tone Benzene Carbon totrachloride Chloroform Chloromethano Methyl ethyl ketone Methylene chloride Naphthaleno Toluene X),lenes, Total Surr 1,2-Dichlorobenzened4 Sun: Dibromofluoromethane Sun: p-Bromofl uorobenzene Surr Toluen+d8 ND ug/LND ug/L ND ug/LND Ug/LND ug/LND ug/LND ug/LND ug/LND ug/LND UgA110 %REC108 ToREC88.0 %REC96.0 %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-130 8Gr20 E&|20 SW826OB sw82608 SW826OB sw82608 sw6260B sw82608 sw8260B sw82608 sw8260B sw8260B sw8260B sw8260B SW826OB SW826OB 06/09O8 12:09ljh 06/09/08 12:09 t jtr 06/09/06 12:09 t jtr 06/09/08 12:09 t jtr 06/09/08 12:09 I jtr 06/09/08 12:09tjk 06/09/08 12:09t)tr 06/09/08 12:09 I jtr 06/09108 12:09 I itr 06/09/08 12:09 t jtr 06/09/08 12:09 t jtr 06/09/08 12:Agljtr 00109/06 12:09 t jtr 06/09/08 12:09tjtr Repo.t Dellnltlons: RL -Analyte reporting timit. QCL - Quality controt timit. MDC - Minimum dctectablE concentration MCL - Maximum @ntaminent level. ND - Not detected at th6 reporting limit. Analysls Date / By I EtrF*filili'?Ef"%l',2'Y,?,;'I?,f!lg:;;l i#!-3u!ffa;,:;E f#,1ir.,,f,ffiaf*:;gi, T T T Client: Project: Lab lD: ClientSample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08060706-003 Trip Blank Report Date: OTtlltOB Collection Date: 061 12t08 1 S:20 DateReceived: 06/13/0g Matrix: Aqueous Analyses ucuQCL lilethodResult Units Qualiliers RL T I T T I t I t T T I T VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyt ketone Methylene chtoride Naphthalene Toluene Xy'enes, Total Sur: 1,2-Dichlorobenzene-d4 Sur: Dibromofl uoromethane Sur: p.Bromofluorobenzene Sun: Toluen+d8 ND ug/LND ug/LND ug/LND ug/LND ug/LND ug/LNO ug/LND ug/L ND udLND ugL109 %REC104 %REC92.O %REC90.0 %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-130 E0-120 80-120 SW8260B sw8260B SWE26OB sw82608 sw8260B sw8260B sw8260B sw8260B sw8260B sw8260B SW826OB sw82608 sw8260B sw8260B 06/17108 21:36tik 06t17t0121:36 tjn 06t17t0821:36 tjtr o6t1ilO$21:36 I jtr 06,t17t08 21:36 t jtr o6l17t08 21:36 I jtr 06117tO821:36 I jtr 06t17108 2I:36 I jk 061'1710821:36 t jtr 06/17lO8 21:36 t jk A6ntn821:36 I jtr 06n7n8 21:36 / jtr 06t171O821:36 t jtr 06t17t08 21:36 t jtr Analysis Date / By T t T leryI RL - Anatyte reporting timit.Deffnitions: eCL - euafity control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporflng timit. T TollFree8g.f,f F#{,i1i,?Ef{?%F2i{f;,i,!'f,f !1**ilg!-z!:,;gf ,g;,:;f*E:;,iff r,,*?:#i;ly:,Xffl{!r^99d ^.I9. ?:: szsa . casper wy a260a t T T Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater c08061004_009 Trip Blank Report Date: O7t2Zl0B Collection Date: 06/1g/0g 14:40 DateReceivedl- 06l2AfiB Matrix: Aqueous Analyse IICUQCL MothodReeult Unlts T T t T T T I T I T T T T I I VOLATILE ORGANIC GOMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzened4 Surr: Dibromofl uoromethane Sun: p-Bromofl uorobenzene Surr: Toluene-dg ND ug/L ND ug/LND uS/LND uS/LND uS/L ND ug/LND uStLND ug/LND ug/LNO ug/L109 %REC105 70REC108 %REC94.0 ToREC 20 1.0 ,.0 't.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-130 80-120 80-120 sw8260B SW826OB sw8260B sw8260B SWE26OB sw8260B sw82608 sw82608 sw8260B sw82608 sw8260B sw8260B sw8260B SW82608 06/23/08 14:24 I dkh 06/2U08 14:24 t dkh 06n3b9 14:24 I dkh 06/2308 14:24 t dkh 06/23/08 14:24 t dkh 06/23/08 14:24 I dkh 0612A08 fi:24 I dkh 06123108 14:24 I dkh 06/23108 14:24 I dkh 06/2308 14:24 I dkh 06123108 i4:24 I dkh @l23l0$ 14:24 I dkh 06123108 14:24 t dkh 06/23/08 14:24 t dkh RL - Analyte reporting limit. QCL - Quality control limit. MDC - Minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at th€ reporting limit. Quallfiers RL Analysis Date / By T ,;f Flf {'Hf,?Ei{?gli:tyfi;,tf f r*ft*rtW,r,E*ff u*rrrf ff f* T t I T ANALYTICAL SUMMARY REPORT July 07, 2008 Denison Mines (USA) Corp 6425 S Hwy 191 Blanding, UT 84511 Workorder No.: C0g0S1285 Project Name: 2nd euarter Semi_Annual Groundwater Quote lD: C1640 - pOC Wells / Monthly Groundwater Sampling T Energy Laboratories, lnc. received *" ro,,* Sample lD Client Sample lD Gollect Date Receive Date Matrixc08051285-001 MW3 I ostzltol oe:so bg/3o/os Aqueous T t T Metals by lCp/lCpMS, DissotvedAlkalinity QA Calculations Chloride Fluoride Nitrogen, Ammonia Nitrogen, Nitrate + NitritepH Gross Alpha minus Rn222 and UraniumSolids, Total Dissolved Sulfate c08051285-002 MW3A 5\4/82608 VOCs, Standard Listl- 05/28/08 09:35 05/30/08 T c08051285-003 MW26 - OSl27l0B14:2O0Sl3Ot08 Am c08051285-004 MW4 T : -_;::f:j:-:- - 05fi27t0815:05 05/30r0s m qovzerca-r++o ooEoroa Aqueous SameAsAbove T c09051295-OO6 MW6o --.i,e^o^wuvr\ Os/28l _- .- 05129t08 02:19 05/30/08 Aqr; __ co8051285-008 MW 17 o5t28to$14:40 05/30/08 Aq*o;--S;;A;Roor"C0805128$009 Trip BtankI 05/29/0S OO:00 OO/30/OA --eqG*@ eiid8'3ll*";;ii""ffi :::il:%3::',i"j[:-vJltheanarvsesarenored"'nm t lf you have any questions regarding these tests results, please call. I I T T I ReportApproved By: Nrr* rK ill%- ENERcv LABORATOBES:^II09:.'_23ss selt creek ltlglwav @zoo/) , po. tux 3258 , Casper, w82602ro// Free 880.235.05ts . o0zioi.oio-:-Fi i'oTiii.roib :Liriii6"ir6yffi"r* .wwwenersytab.com QA/QC Summary Report Client Denison Mines (USA) Corp Project 2nd Quarter Semi-Annual Groundwater Report Date: Work Order: 07t07t08 c08051285 T I I I T I T Analyte RL %REC Low Limit High LimitResultUnits RPD RPDLimit eualMethod: A2320 B Sample lD: MBLK-I Alkalinity, Totat es CaCO3 Carbonate as CO3 Bicarbonate as HCO3 Sample lD: LCS-1 Alkalinity, Totat as CaCO3 Sample lD: C080S1276-001CMS Alkalinity, Total as CaCO3 Sample tD: G08051276-0O1GMSD Alkatinity, Total as CaC03 Method Blank ND mg/L ND mg/L ND mg/L Laboratory Conkol Sample 194 mg/L Sample Matrix Spike 194 mg/L Sample Matrix Spike Duplicate197 mg/L Run: MANTECH_OB06O3A Run: MANTECH_O8O603A 90 110 Run: MANfECH_OB06O3A 80 120 Run: MANTECH_080603A Batch: Rl02104 06/03/08 10:190.2 1 1 80 98 101 1.0 1.0 120 06103108 10.21 06/03/08 t 1:23 06/03/08 1 1:54 10 I T I t I I T 1.6 Method: A2S40 C SampletD: MBLK1_080602 Solids, Totat Dissotved TDS @ 1S0 C Sample tD: LCS1_0E0602 Solids, Totat Dissolved TDS @ tBO C Sample ID: C080S1285-004CMS Solids, Total Dissotued TDS @ t8O C SampletD: C080S.I28S{MCMSD Solids, Totat Dissotved TDS @ igO C Batch: 080602_1_SLDS-TDS_W Method Blank ND mg/L Laboratory Control Sample 1010 mg/L Samph Matrix Spike 3680 mg/L Sample Matrix Spike Duplicate 3580 mg/L Run: BAL-1_080602A Run: BAL-1_080602A 90 110 Run: BAL-1_O806O2A 90 110 Run: BAL-1_080602A 06/02/08 09:13 06/02108 09:13 06/02/08 09:19 06/0?08 09:19 1090 lu 100 10 10 t0 110 2.7Method: A4SOO.C| B SamplelD: MBLKg-080606A Chloride Sample lD: G0805128S4048MS Chloride SampletD: C0805,|28S-0O4BMSD Chloride SamplelD: LCS35-080606A Chloride Method Blank ND mg/L Sample Matrix Spike 132 mg/L Sample Matrix Spike Duplicate131 mg/L Laboratory Control Sample 3590 mg/L Run: TITMT|ON_OBO606A Run: TITMTION_080606A 90 110 Run: TITRAT|ON_080606A 90 110 0.7 Run: TITRAT|ON_080600A 90 ilO Batch : 080606A-CL-TTR-W 06/06/08 13:S4 06/06/08 i5:37 06/06/08 15:38 10 06/06/08 15:40 99 98 101 0.4 1.0 1.0 1.0 T I T T t Qualifiers: RL - Anatyt-. reporting limit.ND - Not detected at the reporting limit. Toll Free 888.23i.0i6 : A0z.Ef F*!{'iii,'Ef{?if,";i{,';,i,!'f:itr9,;#'!'!;iiiE;l#gg-:r,f"i%;,:3rT:i,11#;,,i,trf :;bffi !;tr, t T t t T I QA/QC Summary Report Clienl Denison Mines (USA) Corp Project: 2nd Quarter Semi-Annual Groundwater Report Date: O7l0ll0| Work Order: C08OS128S Result Units Method: Sample lD: Chloride Sample lD: Chloride Sample lD: Chloride Sample lD: Chloride A4sm-Cl B MBLK9-080609A c08060035-001AMS c08060035-O01AMSD LCS35.080609A Method Blank ND mg/L Sample Matrix Spike 493 mg/L Sample Matrix Spike Duplicate490 mg/L Laboratory Control Sample 3560 mg/L RL %REC Low Limit High Limit RPD RPDLimit euat Batch : 080609A-CL-TTR-W Run: TITRAT|ON_O8O6O9A Run: TITRATION_090609A 90 110 Run: TITMT|ON_080609A 90 110 0.7 Run: TITMT|ON_O8O6O9A 100 1.0 1.0 1.0 06/09/08 t2;46 06109fi8 14:O4 06/09/08 14:00 10 06/09/08 15:23 110 t I I t T T T Method: Sample lD: Fluoride Sample lD: Fluoride Sample lD: Fluoride Samplo lD: Fluoride Sample lD: Fluoride Sample lD: Fluoride A4s00.F c MBLK.I LCS.1 c08051277-01oBMS c08051277.0108MSD c08051289{t0tcMs c08051289{t0tcMsD Method Blank ND mg/L Laboratory Controt Sample 0.980 mg/L Sample Makix Spike 9.81 mg/L Sample Matrix Spike Dupticate9.81 mg/L Sample Matrix Spike 1.65 mg/L Sample Matrix Spike Dupticate 1.65 mg/L Run: MANTECH_080604A Run: MANTECH_080604A 90 1i0 Run: MANTECH_080604A 80 120 Run: MANTECH_080604A 80 120 Run: MANTECH_080604A 80 120 Run: MANTECH_080604A Batch: Rt02175 06/04/08 11:.16 06t04t08 11:19 06/04/08 13:36 06/04/08 13:390.0 t0 06tO4t0B 14:17 0.05 0.10 0.10 0.10 0.10 0.10 98 91 91 99 1208099 06104108 14:20 100.0 Method: A4S00-H B SamplelD: lCVi_080530_3 pH lnitiel Calibration Verifi cation Standard6.92 s.u. Analyticat Run: ORIONSS5A_OBOS3OD 05/30/08 15:300.010 101T t t t I t Method: A4S(n-H B SampletD: C0805128S-00BCDUP pH Sample Duplicate 7.36 s.u. Barch : O8OS3O_3_PH_W_S55A_1 Run: ORIONS5SA_080530D 05/30/08 j6:36 1.0 100.010 102 RL - Anatyte reporting limit.ND - Not detected at the reporting limit. ENERG, LABORAT,ilE_q rNC. , 2393 Salt Creek Highway (sfi,r) . p.o. Box 3258 . casp* wy82602rott Free 888.235.05t5 , 30zi35.osn-:-nx ibiia^.ioSi"TriiiZi6riiicyh:;*, . www.enersytab.com QA/QC Summary Report Client Denison Mines (USA) Corp Project 2nd Quarter Semi-Annual Groundwater Report Date: 07/07/08 Work Order: C080S1285 I I I I t T t Analyte Result Units RL %REC Low Limit High Limit RPD RPDLlmit euat M€thod: Sample lD: Sulfate Sample lD: Sulfate Sample lDt Sulfate Sample lD: Sulfate 44500€04 E LCS-1_080603 MBLK-'_080503 c08051277{08BMS c08051277.{,08BMSD Batch: 080603_1 _SO4-TURB-W Laboratory Control Sample 5280 mg/L Method Blank 1 mg/L Sample Matrix Spike 21.7 mg/L Sample Matrix Spike Dupticate 21.5 mg/L Run: TURB-2_08O6OSA110 90 110 Run: TURB-2-080603A Run: TURB-2_090603A100 90 110 Run: TURB-2_080603A 06/03/08 1 1;09 06/03/08 11:11 06/03/08 16:2i 06103108 16:22 10 0.6 1.0 99 90 110 0.9T T T I T T T T Method: Sample lD: Sulfate Sample lD: Sulfate Sample lD: Sulfate Sample lD: Sulfate A4500-SO4 E LCS-t_080604 MBLK.T_080604 c08060007-003AMS c08050007.003AMSD Laboratory Control Sample 5050 mgA Method Blank ND mg/L Sample Matrix Spike 55.3 mg/L Sample Matrix Spike Duplicate55.3 mg/L Run: ruRB-2_080604A105 90 ,10 Run: TURB-2_090604A Run: TURB-2_080604A104 90 110 Run: TURB-2_080604A 't 04 90 110 0.0 Batch: 080604_1_SO4-TURB-W 06/04/08 09:50 06/04/08 09:52 06104/08 l0:4S 06/04/08 10:46 't0 59 0.6 1.0 1.0 T T T T Qualifiers: RL - Analyb reporting limit.ND - Not detecied at the reporting limit. I EilEnGY LABoEAToRE:g:lltrg: .'-zJ9J salt creek lrlg^fway (sz6ot) . po. Box JZIS . casperi wya260zTott Free 119.z15.osrs , e0Thi.bits-:ii ib7Zii./6J9 . cisper(ienergylab.com . www,enersytab.com T t QAIQC Summary Report Client Denison Mines (USA) Corp Project 2nd Quarter Semi-Annual Groundwater Report Date: 07/07/08 Work Order: COS0OIZBEIAnalyteResultUnitsRL %REC Low Limit High Limit RPD RPOLimit eual it I I T I T T T T T T t T Method: E200.1 Sample lD: MB-080609A Calcium Chromium Cobalt lron Magnesium Manganese Potassium Sodium Tin SampletD: LFB.ll80609A Calcium Chromium Cobalt lron Magnesium Manganese Potassium Sodium Tin Sample lD: C080Sl 285-O03EIttS2 Calcium Chromium Cobalt lron Magnesium Manganese Potassium Sodium Tin SamplelD: C080Si28S-OO3EMSD2 Calcium Chromium Cobalt lron Magnesium Manganese Potassium Sodium Tin Method Btank ND mg/L ND mg/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 49.E mg/L 0.997 mg/L 0.986 mg/L 1.05 mg/L 50.7 mg/L 0.997 mg/L 45.6 mg/L 49.3 mg/L 1.01 mg/L Sample Matrix Spike 7U mg/L 4.98 mg/L4.94 mg/L 6.26 mg/L 414 mgl6.00 mg/L 231 mg/L476 rng/L 5.12 mdl Sample Matrix Spike Duplicate7SS mS/L4.98 mg/L 5.09 rnS/L 6.35 nq/t 429 m/L 6.05 mg/L 239 mg/L474 mg/L5.18 mg/L Run: |CP2-C_080609A 0.1 0.002 0.002 0.005 0.04 0.0003 0.02 0.8 0.01 0.50 1000.050 1000.010 990.030 1050.50 .t01 0.010 1000.50 910.77 990.10 101 l'o 970.050 980.010 980.030 1011.0 970.010 95t.0 893.9 970.10 101 1.0 105 0.050 98 0.010 100 0.030 103'r.0 103 0.010 96 1.0 90 3.9 970.10 102 Eatch: R102406 06/09/08 t7:07 06/09/08 17:t 1 06/09/08 20:21 Run: |CP2-C_080609A 85 125 85 125 85 125 85 12s 85 125gS 1Zs 85 125 85 125 85 125 Run: |CP2-C_0BO6O9A 70 13070 130 70 130 70 130 70 13070 130 70 130 70 13070 130 Run: |CP2€_080609A 70 13070 130 ZO i30 70 130 70 13070 130 70 13070 13070 130 2.8 0.0 2.1 1.5 3,6 0.8 0.9 0.4 0.2 05/09/08 20:25 20 2A 20 20 20 20 20 20 20 Qualifiers: RL - Analyte reporting limit.t T ND - Not detected at the reporting limit. I - ,f f FEf {'il?,?Ef;"9[F:ti{f;,;ff;i[gsf liiii-:,JligLid;EEii,l#-,,f,f #itfl,Lliff , t T QA/QC Summary Report Clienh Denison Mines (USA) Corp Projeck 2nd Quarter Semi-Annual Groundwater Report Date: 0ll0llO| Work Order: C08OS128S T , Analyto Result Units RL %REC Low Ltmtt High Llmtt RPD RPDLimit QuaI I t T T T I t t t T I T T T T E200.7 Sample lD: M8.080616A Calcium MagrEsium Potassium Sodium Sample tD: LFB-080G16A Calcium Magnesium Potassium Sodium SamplelD: C08060096-0O2CirS2 Calcium Magnesium Potassium Sodium SamplelD: C0806009G-00ZCMSD2 Calcium Magnesium Potassium Sodium Run: lCP2€_080616A 85 las 85 125 85 12585 125 Run: lCP24_0BO6i6A t0 t3O70 130 70 130 70 130 Run: lCP24_0806164 70 13070 130 70 13070 130 Method Blank ND mg/L ND mS/L ND mg/L ND mg/L Laboratory Fortified Blank 52.6 mg/L 52.2 mg/L 45.6 mg/L 5r.0 mg/L Sample Matrix Spike'141 mg/L 117 mg/L 98.4 mg/L 372 mgtl Sample Matrix Spike Duplicate 145 mg/L 121 mg/L 99.1 mg/L 359 mg/L 0.1 0.04 0.02 0.8 0.50 10s0.50 1040.50 910.77 102 1.0 102't.0 1041.0 921.5 95 1.0 1061.0 1071.0 921.5 92 Run: |CP2-C_080616A Batch: Rl02753 06/16/08 15:33 06/16/08 15:37 06/16/08 18:08 06116108 18:12 20 20 20 20 2.7 2.7 0,7 4.7 Qualifierc: RL - Analyte reporting limit.ND - Not detected at the reporting timit I ffFE!{,iiiffif{%1,,2i!,?,;,r'f;i[i:;;l il{!-:[[W;i8 pi,ff!,,,,i,::f:t fffftr,I T T QA/QC Summary Report Client Denison Mines (USA) Corp Project: 2nd euarter Semi_Annual Groundwaler Report Da|a.: Alfilt\B Work Order: COBOS12BS I T T T T T T T T T T T RL %REC Low Limir Htgh Ltmtt RPD RPDLimIt QuaIE200.8 Sample lD: LRB Arsenic Beryltium Cadmium Chromium Cobalt coPPer Lead Manganese Mera.rry Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Znc Sampte tD: LFB Arsenic Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Merorry Molybdenum Nickel Selenium Silver Thallium In Uranium Vanadium Zinc Method Blank ND myL ND mg/L ND mg/L 7E-0S mS/L ND mgtL ND mg/L ND mS/L ND mg/L ND mg/L ND mg/L ND mdL ND mg/L 7E-05 mS/L ND mg/L 0.000, mS/L ND mg/L ND mg/L 0.001 mg/L Laboratory Fortified Blank 0.0534 rnS/L 0.0539 mg/L 0.0535 mg/L 0.0536 mg/L 0.0539 mg/L 0.0532 mg/L 0.0526 mg/L 0.0539 mg/L 0.00515 mg/L 0.0536 mg/L 0.0524 mg/L 0.0533 mg/L0.0210 mg/L 0.0523 mgtL0.053, mS/L 0.0533 mg/L 0.0537 mg/L 0.0546 mg/L 6E-05 3E-05 1E-05 4E_05 2E-05 7E-0s 3E-05 5E-0s 8E-05 5E-05 0.0007 0.0002 sE_05 1E-05 6E_05 1 E-05 3E-05 0.0003 0.0010 1070.0010 108 0.0010 1070.0010 1070.0010 1080.0010 t060.0010 1050.0010 1080.0010 1030.0010 107 0.0010 1050.0010 1070.0010 1050.0010 ,050.0010 1060.00030 1070.0010 1070.0010 107 Run: ICPMS2-C_080610A 85 11585 115 85 115A5 115 85 11585 lls85 ,15 85 11585 115 BS ,1S 85 11S85 11585 115BS it585 11585 11585 fis85 115 Run: ICPMS2C_08O61OA Batch: R102492 06/10/08 13:06 06/10/08 t3:12 T T T Qualifiers: RL - Analyte reporting limit ND - Not detected at the reporting limit. T _ENEEGY LABORATORTES, tNC. . 2593 Salt CreekriiFiiiieisisliiti i'ibrieibir-:-;;3b7;;;il!!.:lt:,;r&;;rgrgt* *nt r.** T T T QA/QC Summary Report Client Denison Mines (USA) Corp Project 2nd Quarter Semi-Annual Groundwater Report Date: 07t01fi8 Work Order: C080S128S Analyte Resutt Units RL %REC Low Llmit Hlgh Llmlt RPD RPDLimtt eual S s T T I I T T I T T I t T Method: E200.8 Sample tD: C080S12B5.OOEEMS4 Arsenic Berytlium Cadmium Chromium Cobalt Copper Lead Manganese Mercury Molybdenum Nicket Selenium Situer Thallium Tin Uranium Vanadium Zinc Sample tD: C0805128S"00BEMSIr.3 Arsenic Beryllium Cadmium Chromium Cobatt Copper Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc Post Digeslion Spike 0.0515 mg/L 0.0112 mg/L 0.0453 mg/L 0.0488 mgtL 0.0482 mg/L 0.0493 mg/L 0.0539 mg/L 0.151 mg/L 0.00534 mg/L 0.0550 mg/L 0.0530 mg/L 0.056, rng/L 0.0110 mS/L 0.0296 mS/L 0.0462 mdL 0.0866 rng/L 0.0515 mg/L 0.0456 mg/L Post Digestion Spike Duplicate0.0522 ms/L 0.0436 mg/L 0.0460 mg/L 0.0,096 mS/L 0.0492 rnS/L 0.0510 mg/L 0.0544 mg/L0.154 mg/L 0.00536 mg/L 0.0563 rng/L 0.0552 mgil 0.0579 mg/LO.0113 mg/L 0.0250 mg/L O.O474 mg/L 0.0886 mg/L O.O521 mg/L 0.0477 mglL Run: ICPMS2€_OBO61OA 70 iso70 13070 13070 130Z0 130t0 ,30TO 13070 13070 13070 13070 13070 130ZO 13070 13070 130T0 r3070 13070 t3o Run: ICPMS2C_080610A 70 13070 13070 13070 13070 1307A 13070 ,3070 13070 13070 13070 13070 130ZO 13070 130tO 13070 13070 13070 130 0.0010 0.010 0.010 0.050 0.010 0.010 0.050 0.010 0.0010 0.10 0.050 0.0010 0.010 0.10 0.10 0.00030 0. r0 0.010 0.0010 0.010 0.010 0.050 0.010 0.010 0.050 0.0r0 0.0010 0.10 0.050 0.0010 0.010 0.10 0.10 0.00030 0.10 0.010 102 82 90 97 94 92 106 97 107 107 91 97 55 58 92 114 102 80 103 87 92 99 96 95 107 104 107 110 95 100 56 49 95 118 103 84 1.2 5.5 1.5 0.0 2.4 3.4 0.9 2.4 0.3 0.0 4.1 3.1 2.7 0.0 0.0 2.2 0.0 4.5 Batch: R102492 46fi1108 07:48 06/1 1/08 07:55 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 T T T Qualifiers: RL - Analyte repoding limit. S - Spike recovery outside of advisory limits. ND - Not deteded at the reporting limit. ,y#!iiff;li!#.:[l{fjL;ihE:i,Iff r.,,f;:i:irf:,X;tr, t T T T t t eA/eC Summary Report Client Denison Mines (USA) Corp Project 2nd Quarter Semi-Annual Groundwater Report Date: Work Order: 07t07t08 c0805128s Rosult Units RL %REC Low Limit High Limit RPO RPDLirnit euatMethod: E3S0.t Sampte tD: MBLK Nitrogen, Ammonia as N Sample tD: LFB Nitrogen, Ammonia as N SampletD: B08060058.00iBMS Nitrogen, Ammonia as N SamplelD: 808060058.001BMSD Nitrogen, Ammonia as N Method Blank ND mg/L Laboratory Fortified Blank 1.O4 mg/L Sample Matrix Spike 0.996 mdL Sample Matrix Spike Duplicate 0.999 mg/L Run: SUB-8111862 Run: SUB-B'|I1862 90 110 Run: SUB-BI 1 i862 s0 110 Run: SUB-BI.ti862 Batch: B_Rl 1 1962 06/05/08 08:02 06/05/08 08:03 06/05/08 08:39 06/05/00 08:40 10 0.02 0.10 0.10 0.10 100 105 ,00 90 t I t I T T 110 0.3Method: E3S3.2 Sampte lO: MBLK Nitrogen. Nikate+Nitrite as N Sample lD: LFB Nitrogen, Nitrate+Nitrite as N Sample tD: C08061285-006D Nikogen, Nitrate+Nikite as N Sample tD: C080i1288.006D Nitrogen, Nitrate+Nitrite as N Method Btank 0.007 mg/L Laboratory Fortified Blank0.936 mg/L Sample Matrix Spike 1.10 mS/L Sample Matrix Spike Duplicate1.13 rng/L Run: SUB-B1 12080 Run: SUB-BI 1208090 1ro Run: SUB-BI ,t2080 90 110 Run: SUB-B'I12080 Batch: B_R1 12090 06/09/08 t3:04 06/09/08 i3:0s 06/09/08 13:11 06/09/08 t3:12 10 0.002 0.050 0.050 0.050 93 95 2.190110 T t T T T t Method: E3S3.2 Sample lD: MBLK Nihogen, Nitrate+Nitrite as N Sample tD: LFB Nikogen, Nitrate+Nitrite as N Sampte tD: C0805.1276-001E Nitrogen, Nihate+Nitrite as N Sampb tD: CogOs1276-0OlE Nitrogen, Nitrate+Nitrite as N Method Blank 0.002 mg/L Laboratory Fortified Blank1.44 mg/L Sample Mahix Spike 1.01 mg/L Sampb Matrix Spike Dupticate1.01 mg/L Run: SUB-8112135 Run: SUB-Br12135 90 110 Run: SUB-B'I 1213590 110 Run: SUB-81.t2135 90 110 Batch: B_R't 12135 06/10/08 i0:37 06/10/08 10:38 06/'10108 10:44 06/10/08 10:45 10 0.002 0.050 0.050 0.050 106 104 103 Qualifiers: RL - Analyte reporting limit. T ND - Not detected al the reporting limit. - EIVERG Y LABORATOH ,E:s:^t!!g: .'-239J sa[ creek fllqfway (s260 t) . p o. Box J258 . casper; w ae602rott Free 8ffi'235.osrs ' eozisi,ons-:-Fax sbi.iii.roii Triifriaieiihyhiin .wwuenersylab.com I I I T QA/QC Summary Report Client Denison Mines (USA) Corp Project 2nd Quarter Semi-Annual Groundwater Report Date: 07/07/08 Work Order: C0B0S1285 , Analyto Method: 8900.t Sample lD: itB€A{i37 Gross Alpha minus Rn & U Sample lD: LCS€A.0137 Gross Alpha minus Rn & U Sample lD: C08051285.001AMS Gross Alpha minus Rn & U Sample lD: C0808128S-001AMSD Gross Alpha minus Rn & U Rosult Units Method Blank 0.7 pCi/L Laboratory Control Sample 29.5 pCi/L Sample Matrix Spike 27.2 pCi/L Sample Matrix Spike Dupticate 24.7 pCi/L Run: G5000W_080612A Run: G5000W_090612A 70 130 Run: G5000W_080612A70 130 Run: G5000W_080612A 70 .t 30 RL %REC Low Llmtt High Limit RPD RPDLimit QuaI 90 t t T T T T 109 Eatch: GA-0137 06/18/08 i2:13 06/18/08 12:13 06/t8/08 12:13 06/1E/08 12:i3 21.9 T I T T t T T Qualifiers: RL - Analyte reporting limit.I T ND - Not deteded at the reporting limit T ENEEGY LABoRAToHEs:llv-c: '_2J93 salt creek Hig_hway (8260r) . p.o. Box J258 , casper; wyaz60zTo// Free 888'z?5.0sts ' a0zlgi.oirc-:-rilbiiii. /6,?9 . casper@enersylab.com . wwwenergytab.com T T QA/QC Summary Report Client Denison Mines (USA) Corp Project: 2nd Quarter Semi-Annual Groundwater Report Date: 0lfi7l0g Work Order: C08051288 T Analyte Result Unlts RL %REC Low Limit High Limit RPD RPDLimit euat 13070 t t T T T I I T T t T I I Method: SW8260B Sample lD: 02Jun.08_LCS_2 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene_d4 Surr: Dibromofl uoromethane Sur: p-Bromofl uorobenzene Sun: Toluene-d8 Sample lD: 02Jun-08_MBLK_s Acetone Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Sur: Dibromofl uoromethane Surr: p-Bromofluorobenzene Surr: Toluene-dg Sample lD: C0805128S-OO5FMS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane 6+p-Xy'enes Laboratory Control Sample 210 ug/L 10 ug/L10 ug/L 11 ug/L 9.5 ug/L 23 ug/L 210 ug/L10 ug/L 10 ug/L 12 ug/L 1 I ug/L 35 ug/L Method Blank ND ug/L NO ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/L ND ugtl ND ug/L ND ug/L ND ug/L ND ug/L Run: S975VOC1_0BO6O2A 106 70 1301.0 102 70 t3o 1 .0 103 70 .t 301.0 I 10 70 1301.0 95 70 1301.0 117 70 13020 103 70 1301.0 105 70 1301.0 104 70 1301.0 1 18 70 1301.0 1 10 70 1301.0 117 70 1301.0 97 80 1201.0 95 70 1301.0 1O0 80 1301.0 111 80 12O Run: 5975VOC1_090602A Batch: R102047 06102108 10:42 AGD2|08 12:27 06102t08 1T:45 Sample Matrix Spike11000 ug/L 980 ug/L 1100 ug/L1200 ug/L900 ug/L 2300 ugtL 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 .t05 100 91 100 114 50 98 50 106 50 116 50 90 50 117 80 120 70 130 80 12080 12O Run: 5975VOC1_O8O602A 70 130 70 130 70 130 70 130 70 130 Qualifiers: RL - Analyte reporting limit. T I ND - Not detec-ted at th€ .eporting limit. T - EfF1!{'H?'?E{%[12i{f;;'!'i;!ig:;;lils!":[!wa;i8 *i,lffr;.,;;f:!,ff{,fi,:, I T QA/QC Summary Report Client Denison Mines (USA) Corp Projech 2nd Quarter Semi,Annual Groundwater Report Date: 07t0Tl0B Work Order: C08OS12B5 T Analyte Result Units RL %REC Low Ltmit High Limit RPD RPDLimit euat I T I I T I I T T T t T T T t Method: SW826OB SamplelD: C0B0E1285O0SFMS Methylene chlodde Naphthatene o-Xylene Toluene Xylenes, Total Sun:'1,2-Dichlorobenzene{4 Surr: Dibromofl uoromethane Sur: p-Bromofluorobenzene Surr: Toluene-dg Sample tD: C080S12BS.00SFMSD Acetone Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surc 1,2-Dichlorobenzene_d4 Su rr: Dibromofl uoromethane Surr: p-Bromofluorobenzene Sur: Toluene-d8 Sample Mahix Spike 1100 ug/L 920 ug/L 1200 ugtL 1 100 ug/L 3500 ug/L Run: 5975VOC1_080602A 70 13070 130t0 13070 1so70 13080 12070 13080 120B0 tz} Run: 5975VOC1_080602A 70 13070 13070 13070 13070 1go70 13070 13070 130z0 13070 130tA 130g0 1zO70 130B0 12080 120 Batch: R102047 06t102108 17:45 Sample Matrix Spike Duplicate12000 ug/L 1000 ug/L 1100 ug/L1200 ugll 1000 ug/L 2400 ug/L 1100 ug/L 1000 ug/L 1200 ug/L 1 100 ug/L 36@ ug/L 50 10950 9250 12050 11150 1181.0 961.0 1021.0 1091.0 111 12050 100 50 107s0 11850 10150 12050 11250 10350 122 50 11450 1211.0 95r.0 r031.0 108 1 .0 110 06fi?,08 18:21 20 20 20 20 20 20 20 20 20 20 10 10 10 10 2.0 4.7 2.4 11 2.5 2.9 12 1.7 2.8 2.2 0.0 0.0 0.0 0.0 Qualifiers: RL - Analyte reporting limit.ND - Not detected at the reporting limit. T - ENERG,, LABO,ATOBTE-S:-,!9: ' 2393 Sar Creek lllglwav (s260/) . p.o. Box 3258 . Caspec wy82002rolt Free ffii.pri.1,ts . s0zisi.oas-:-Fi ibviii'.io1i':';?iidriiicyffi*, . wrwtenersytab.com T T QA/QC Summary Report Client Denison Mines (USA) Corp Project 2nd Quarter Semi-Annual Groundwater Report Date: 07107108 Work Order: C0B0S12B5 T ll*tyt"Result Units RL %REC Low Limtt High Limit RPD RPDLimit euat T T T I T t t T T T T T t M6thod: SW82G0B Sample lD: 05"Jun-0g_LCS_3 Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzened4 Surr: Dibromofluoromethane Surr: p-Bromofl uorobenzene Surr: Toluenedg Sample lD: 0EJun-08_MBLK_6 Benzene Ca6on tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xlenes, Total Sun: 1,2-Dichlorobenzened4 Surr: Dibromofl uoromethane Sur: p-Bromofluorobenzene Surr Toluene-dg Sample tD: C0E06O17O-OO4EMS Benzene Carbon tetrachloride Chloroform 6+p-Xylenes o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzened4 Laboratory Control Sample 10 ug/L 1 1 ug/L 10 ug/L 9.9 ug/L 19 ug/L ,00 ug/L 10 ug/L 7.4 ug/L 9.4 ug/L 9.9 uS/L 28 ug/L Run: GCMS2_080605870 13070 13070 13070 ,3070 13070 13070 13070 13070 13070 13070 13080 12070 13080 13080 na Run: GCMS2_0BO60SB Batch: Rl02235 06/05/08 10:47 O6105108 12:45 06/06/O8 05:01 1.0 102 1.0 1 10 1.0 104 1.0 99 1.0 94 20 100 1.0 104'1.0 74 1.0 94 1.0 99 1.0 94.t.0 99 1.0 108 1.0 99 1,0 101 Method Blank ND ND ND ND ND ND ND ND ND ND ND 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.s 0.5 0.5 110 112 101 94 ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 80 12070 13080 12080 120 Run; GCMS2_060605BSampte Matrix Spike230 ug/L 270 ug/L 24O ug/L 230 ug/L 230 ug/L 220 ug/L 460 ug/L 10 1't7 7010 134 70,0 122 70r0 115 7010 115 7010 112 7010 115 701.0 108 80 130 130 130 130 130 130 130 120 T I RL - Analyte repoding limit. S - Spike recovery outside of advisory limits. ND - Not detected at the reporting timit. T ENEBGY LABOEA|ORiES, INC- . ZJSJ Saft Creekr,tiF,iiwaiisriiTi 7'izzas..osrs-: ;;vb;r;;.ilg!-:I[W*;,:;E tr lf,fl _,^f,f:#;b[,[Xlr,,i,I I QA/QC Summary Report Client Denison Mines (USA) Corp Projeet 2nd Quarter Semi-Annual Groundwater Report Date: |7toilOg Work OrdEr; C0B0S12O5 T T T T T I I I T T T I ! T Anal]tre Result Units RL %REC Low Limir High Llmit RPD RPDLimit QuaIMethod: SWB260B Batch: R.t02235sampre rD: C0g06017H',O4EMS Sampre Matrix spike Run: GCMS2-0806058 06/06/0s 05:01Surr: Dibromofluoromethane 1.0 106 70 130Sur: p-Bromofluorobenzene surr: Toluen+d8 1'o 111 80 1201.0 100 80 Qo-cartontetrachloridgresponseisslightlyoveracceptancerange. sincetheLcsandtheRpDoftheMs/MsDpairisacceptabre,noreanarysisisnecessary. Sampte tD: C08060170{O4EMSD Sample Matrix Spike Duplicate Run: GCMS2_0806058 06/06108 05:39Benzene 230 ug/L .t0 117 70 130 0.0 ?oCarbon tetrachlofide 250 ugA 10 fi7 lO 130 s.s zoChloroform Z4O ug/L I O 1 18 tO i 30 3.3 ZOpl+p-Xy'enes 2gO ug/L 10 11S 70 t30 O.O 20o-Xylene 2gO ug/L tO 113 ZO 130 1.8 20Toluene 220 ug/L 10 111 ZO 130 0.7 20Xylenes, Totat 460 ug/L tO 114 70 130 0.9 ZOSur: 1,2-Dichlorobenzene-d4 1.0 106 80 EO 0.0 10y:1.':ffi:l;ilffiT:fi 10 102 70 130 oo ro surr: Toluen+d8 1.0 110 80 120 0.0 101.0 t00 60 fto o.o 10 Qualifierc: RL - Anatyte reporting limit. T T ND - Not detected at the reporting timil ii 'f ^tl i) f !,,f Ee'p2' tj$ .ffiE -r OP I? EfuEts66clD= *,.E *l Eeels+ sEfrlf;f>(, ct lg EE€ IE.r, uvJ. punoEutnl Hsnu * 16 tr4|*\t {trtJ { k :{ 7a Is E(t \llTI !as E?tr(E Pt- d. reqlo ^esseotE Xuosele6ensplos/e1oglep64y Ig g4 g 1y1y:edlleldtueg Esleule1uoC Jo Jequ/nN = "?)si cc4'e {n 6:rF{uipr xI7d* Cdo-:*rn o-6 EEE 6 = o .oLo- T'€o9>8EoqirJ :'=#LTe opP <(Uf' JCg (\,lEe < llErE9E il.aJ ds Tg [i ElI€bl* od "lEr st a- lEs € IEiEt€d b iIEEE iI;FEII6E T'19-t ; ]EE E IEE E Iii EU.!:.1=ilEr!, ile= E il;rEil EEs IEE E l3s$ I#g H lfi I IEEt IEEPI r!! UllEr tE= ;;9.rE9E> E a, Egaos I lJri lp ot,El-oog 8Eu1+rPoe,OP =EETE ec -:of 8$.I"oB -liLO<frtr5s'EL'UtEEo>Etr5o=flLafi -o-1'C'Etl.olof IeE I.=r I ^EH IoH I HH IT lr T T t t I T I T T t I t t Energy Laboratories lnc lr l; lrI T T t T I t Workorder Receipt Ghecklist Denison Mines (USA) Corp Login completed by: Kimberly Humiston Reviewed by: Reviewed Date: Shipping container/cooler in good condition? Custody seals intact on shipping container/cooler? Custody seals intad on sample botfles? Chain of custody pres€nt? Chain of custody signed when relinquished and rec€ived? Chain of custody agrees with sample labels? Samples in proper container/botfle? Sample containers intact? Sufficient sample volume for indicated test? AII samples received within holding time? Container/Temp Blank temperature ln compliance? Water - VOA vials have zero headspace? Water - pH acceptable upon receipt? 4'C On le No VOA viats submitted I NotApplicabte fl Yes fl Yes [f Yes I Yes fl Yes fl Yes Bl Yes fl Yes [l Yes B Yes [l Yes fl Yes ffi Yes Bl rffi tilfl tilil ililtil$ilitf fl tililfl trfl c08051 285 Date and Time Received: S/30/200g 9:30 AM Received by: gt Carrier name: Next DayAir No fl NoI No fl NoE No fI No fJ NoE No fI NOE No fI NOD No fI NoE NotPresent ! Not Present ! Not Present gJ I - EilEncY LABoRATcTBtF-s.t r\rc. . z39J salt creek !/1g-lway (sp60t) . p.o. Box i258 . casper, wyg26azTotl Free 88g.p15.0sts . s0z.iii.biu-:ii ib1.iii./639 ,'casper@energylab.com , wnaenergytab.com t Date: 07-Jul-a8 T t t I I t T T t T T I t T T T t CLIENT: Project: Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater Sample Delivery Group: CO8OS12B5 CASE NARRATIVE THIS IS THE FINAL PAGE OF THE LABOMTORYANALYTICAL REPORT oRtctNAL SAMPLE SUBMITTAL(S) All original sample submittals have been returned with the data package. SAMPLE TEMPERATURE COMPLTANCE: a"C (t2.C)Temperature of samples received may not be consideied properly preserved by accepted standards. samples that are Hlijlljf"'immediatelv afrer collection shatl oe consi;rJJ;"I;&;u irtnlre is lvioence irraiirre chinins process GROSS ALPHA ANALYSIS Method 900'0 for gross alpha and gross beta is intended as. a drinking water method for low TDS waters. Data providedby this method for non potable waters should be viewed a, inconsiiie"ni. -" 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 excessive decay. rrrrririu, i""rmmended delay between end of exposure tobeginning ofcounting should not exoeed g days. SOIUSOLID SAMPLES All samples reported on an as received basis unress otherwise indicated. ATRAZINE, SIMAZINE AND PCB ANALYSIS USING EPA 505Data for Atrazine and simazine are reported from EPA 525.2, not from EpA 505. Data reported by ELI using EpA method505 reflects the results for seven individual Aroclors. \rvhen fre resurts iorail seven are r,,io rii"t alG"ted), the samplemeets EPA compliance criteria for pCB monitoring. SUBCONTRACTING ANALYSIS Subcontracting of sample analyses to an oulside l.abgralorv.ryray be required. lf so, ENERGy LAB6RAT9RIES will utilizeits branch laboratories or qualified contract laboratories toitnis l"ritil n"v such laboratories will be indicated within theLaboratory Analytical Report. r BRANCH LABOMTORY LOCATIONS eli-b - Energy Laboratories, lnc. - Billings, MTeli-g - Energy Laboratories, lnc. - G,lletie, llryeli-h - Energy Laboratories, lnc. - Helena, MTeli-r - Energy Laboratories, lnc. - Rapid iity, SOeli-t - Energy Laboratories, lnc. - Coilege Siation, TX CERTFICATIONS; USEPA: \rvY00002; FL-DOHNELAC: E8764.t;Arizona: M0699; California:02118CAOregon: l /y200001i Utah: 3072350515; Virginia:-b0057; WastrinSt"i, Ci9'oS ISO 17025 DISCLAIMER; The results of this Anaryticar Report rerate onry to the items submitted for anarysis. ENERGY LABoRAToRIES' lNc' - CASPER,\ /Y certifies that certain method selections contained in this report meetrequirements as set forth by the above accreditino authorities. S;;;;t; requested by the client may not be coveredunderlhese certirications. Allanalvsis data to oJsuoritteJior;"di"i;;;;foriement #"r[ b;;;ified in the samprestate of origin. Prease veriff ELIS lErtification coverage by visiting www.energyrab.com ;:LTiJ:"ffi:JHit"#J*l to provide vou with this analvtical service. For addilionat information and services visir our I _ENERGT LABORATORTES, tNC. . 2S9S Sar CreekEiiFiiiai2isifrTiy1ijz.isi.birc-:-;;vb7;;;.i{fl!-:#!i3!3;,i;3r1i,lif1.,,f,1i#!r#rrxtr,f, T T t I July 17,2008 Denison Mines (USA) Corp 6425 S Hwy 191 Blanding, UT 84511 Workorder No.: C0g060292 Project Name: 2nd euarter Semi-Annual Groundwater ANALYTICAL SUMMARY REPORT Quote lD: C1640 - pOC Wells / Monthly Groundwater Sampting t Energy Laboratories, lnc. received the following 12 samples from Denison Mi*, (usA) c;rp;6/6/10o8 ,"|, *ry* Sample lD Client Sample lD Collect Date Receive Date Matrix Testc08060292-001 MWl i 06/04/08 09:08 06/06/08 Aqueous Metals by tCp/lCpMS, DissolvedI t T Alkalinity QA Calcutations Chloride Fluoride Nitrogen, Ammonia Nitrogen, Nitrate + NitritepH Gross Alpha minus Rn222 and UraniumSolids, Total Dissolved Sulfate SW8260B VOCs, Standard List T T C08060292-002 MW Z -, t tr t^n co8o6o292-00s ; Aqueous Same As Above c08060292-004 MW 1s Aqueous Same As Abovevvewvzv;-uu.l Mw tu 1 06/04/09 13:55 06/06/0g C08060292-005 MW 27 ^atr,.tne 1E.c^ ^a,^^,^^ Aqueous Same As Above * O6lO2tOB 15:50 06/06/08 Aqueous Same As Above c08060292-006 MW28 Aqueous Same As Above c08060292-007 MW29 - 06103108 10:50 06/06/08 Aqueous Same As Abovetc08060292-008 MW30 _ 06/03/08 13:i0 06/06/08 Aqueous Same As Abovec08060292-009 MW31 - 06103/08 1S:4S 06/06/08 Aqueous Same As Above T C08060292-Ol0 tvt\ / 32 06/05/08 08:05 06/06t08 Aqueous T T t I T t Report Approv ed By | /,bfu Same As Abovec08060292-011 MW65 06/05/08 08:05 06/06/08 Aqueous Same As AboveC08060292-012 Trip Btank 06/05/08 08:05 06/06/08 Aqueous 5\4A2608 VOCs, Standard List A^ffttilXi";;H"il?:::n%3;}l,ffi,X3 rhe anaryses are noted in rhe LaboratoryAnaryricarn.po,t, n" lf you have any questions regarding these tests results, please call. sIEtEClmsmil t Tolt Free 888.2J1.OSU ; ibz€f FEf {,itr',?Ef{?gl',2i{tr;,;,1'i;%i:;flv"i;%i:;;lilfl !.:;l!;3,,3;f;3r1r,:#,,,,,f;:ff i;f:,Tf:,t I Cllent: Project: QA/QC Summary Report Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater Report Date: Work Order: 07117t08 c08060292 T T t T T Amlyte Lgw Llmtt High Ltmtt RPD RPDLImII QuaIMothod: AZimB Sample lD: UBLK-, Alkalinity, Total as CaCO3 Carbonate as CO3 Bicarbonate as HCO3 Sample lD: LCS-I Alkalinity, Totat as CaCO3 Sample tD: C0E06026I.{IOZAIUS Alkalinity, Totat as CaCO3 Sample lD: C0E060261.{r02AilSD Alkalinity, Total as CaCO3 Method Btank ND mgtL ND mgA ND mglL Laboratory Gontrol Sample192 mg/L Sample Matrix Spika 217 mg/L Sample Matrix Spike Duplhate218 mS/L Run: |!IANTECH_080609A Run: IvIANTECH_0E0609A 90 110 Run: [vIANTECH_080609A 80 12O Run: MANTECH-o8o5O9A Batch: R102400 06/09/08 09:560.2 1 1 100 1.0 1.0 1.0 06/09/08 10:03 06rc9/08 10:50 06/09108 10:57 10120 10 T I T T I T T T T iiathod: A2S,O C Sampte tD: MBLKI_080606 Solids, Totat Dissotved TDS @ 180 C Sample tD: LGS1_0E0606 Solids, Total Dissotved TDS @ 1SO C Sample tD: C0E060292.{tfiAMS Solids, Totat Dissotved TDS @ 180 C Sample tD: C09060292.{l04AtuSD Solids, Total Dissotved TDS @ igO C Mehod Blank ND mg/L Labontory Control Samplo 990 mgtL Sample Matrix Spike zUO mg/L Sample Matrix Spike Duplicate 284,0 mg/L Run: BAL-1_0806068 Run: BAL-1_OBO6O6B 90 110 Run: BAL-1_080606B 90 1to Runr BAL-1_OBO6O6B 90 110 Batch ; 080606_1_SLDS_TDS_W 06/08/08 1 t:09 116/08/08 I 1:09 06/08/08 11:25 06/08/08 11:26 10 ar"tifi** T t RL - Anatyte reporUng limit.ND - Not detected at thc reporting timit. - ,5fF*!{,iif'?E{%1j2"{,?,;r'!,f![g:;;{ Hg!":,J!,ig,,Bi,i;E E|i,lifr.,,f,firi!,ff1j,tr, QA/QC Summary Report Client Denison Mines (USA) Corp Project 2nd Quarter Semi-Annual Groundwater Report Date: Work Order: 47n7rc} c08060292 A*lyt"Result Units Method: Sample lD: Chloride Sample lD: Chloride Sample lD: Chloride Sample lD: Chloride Sample lD: Chloride Sample lD: Chloride A45(n€t B MBLK9,O8O6I8A c08060292.002At s c08050292.{r02AMSD c0E060292-011AMS c08060292{rlAMSD LCS36-080618A Method Btank ND mg/L Sample Matrix Spike42.5 mg/L Sample Matrix Spike Duplicate42.2 mg/L Sample Matrix Spike 105 mg/L Sample Mahix Spike Duplicate 104 mg/L Laboratory Control Sample3620 mg/L RL %REC Low Ltmtt High Limit RPD RPOLImit QUaI Batch : 06061 8A-CL-TTR-W Run: TITMT|ON_080618A Run: T|TMT|ON_080618A 90 110 Run: TITRATION_OBOG18A 90 t1o Run: TITMTION_080618A 90 110 Run: TITRATION_08061 BA90 i'to Run: TITMTION_080618A 1.4 90 101 r00 102 102 0.4 1.0 1.0 1.0 1.0 1.0 06/18/08 09:20 06118/08't0:47 06/18/08 10:48 10 06/18/0E 1i:36 06/18/08 11:38 10 06/18/08 11:45 l: l,rI t T T T T T t 1r0 Method: A45O0-F C Sample tDr t BLK.i Fluoride Sample lD: LCS-I Fluoride Sample lD: C08060292.00SAMS Fluoride Sample lD: G08060292.0OSAMSD Fluoride Sample tD: C08060300.002AMS Fluoride Sample lD: C0G060300{,02AMSD Fluoride Method Blank ND rng/L Laboratory Control Sarnple1.02 mg/L Sample Matrix Spike 1.78 mg/L Sample Matrix Spike Duplicate1.BZ mg/L Sample Matrix Spike 3.40 rng/L Sample Matrix Spike Duplicate3.46 mg/L Run: MANTECH_080610A Run: MANTECH_080610A 90 1to Run: MANTECH_080610A 80 120 Run: MANTECH_O8O6IOA 80 120 Run: MANTECH-O8061oA B0 ,t2O Run: MANTECH_08O61OA Batch: R102467 06,l10t0$ 12:29 06h0t0$ 12:32 06/10/08 13:26 06/10/08 13:292.2 10 06/10/08 14:07 0.05 0.10 0.10 0.10 0.10 0.10 102 106 103 80109 06/10/08 14:13 10120lfethod: A4Sq,+t B SampletD: tCVl_080606_2 pH lnitial Calibration Verificalion Standard6.91 s.u. Analyticat Run: OR|ONS55A_O8O6O6B A6106,108 14:1a0.010 101 10298 A4500-H B Sample lD: G0E060292.{,03AOUP pH Sample Duplicate 6.99 s.u. Batch: 080606_2_PH_W_5SSA-1 Run: ORION55SA_0806068 06/06/08 15:260.9 100.010 Quallfiers: RL - Analyte reporting limit ND - Not detected at the reporting limjt. EfF[!{,iif,?ffi?il?2i{8,;'r'f;!lg:;;lgg!-:"11#3i,i;3;Eiiiffr*,t1i#!,fftrtr, QAIQC Summary Report Glienft Denison Mines (USA) Corp Project 2nd euarter Semi-Annual Groundwater Report Date: Work Order: 07t17to\ c08060292 T T T T T T I Analyte Result Unlts RL %REc Low Limit Htgh Limtt RPD RPDLImII QuaI Batch: 06061 1_i_SO4.TUR&W Run: TURB-2_08061 1Atos 90 tlo Run: TURB.2_08061 rA Run; TURB-2_0BO61 1A90 l1o Run: TURB-2_0E061 1A90 lto Run: TURB-2_0BO61 lA90 l1o Run: TURB-2_08061 1A90 tlo Method: Sample tD: Sulfate Sample lD: Sulfate Sample tD: Sulfate Sample lD: Sulfate Sample lD: Sulfate Sample lD: Sulfate 4,1500-S04 E LCS.,_080611 mBLK-t-08061' c08060290{06cils c08060290{06cMSD c08060292.009Atus c0E060292.0o9AIuSD Laboratory Control Sampte5060 mg/L Method Btank 0.9 rng/L Sample Matrix Spike26.1 mg/L Sample Matrix Spikc Duplicate26.3 mg/L Sample Matrix Spike1030 mg/L Sample Matrix Spike Duplicate1030 mg/L 0.7 1.0 1.0 15 06/1 1/08 09:42 06/11/08 09:44 06/1 1/08 t0:S9 06/11/08 t1:01 t0 06/11/08 t1:48 06/f1108 t1:50 10 I t T T I T t I I T T t Qualifierc: RL - Analyb reporting limit. ND - Not detected at the reporting limit. T - EfFEf{'i!?,W%82'{&,;1'!:![gf;!iy*-:#!,i€iL,,i;E;f,fi,l,ir*,f,fifii,ff;xitr, T t QA/QC Summary Report Client Denison Mines (USA) Corp Projech 2nd Quarter Semi-Annual Groundwater Report DaE: A7tfil\g Work Order; COAO6O292I I T I T T I t T T T T T Analyte Method: E200.7 Sampte tD: UB-080619A Beryllium Calcium Chromium Cobalt lron Lead Magnesium Manganese Molybdenum Nickel Potassium Sodium Tin Vanadium Zinc Sample tD: LFB.080619A Beryllium Calcium Chromium Gobalt lron Lead Magnesium Manganese Molybdenum Nickel Potiassium Sodium Tin Vanadium Zinc Sample lD; C08060292{1iBUS2 Beryllium Calcium Chromium Cobalt lron Lead Magnesium Manganese RL %REC Low Ltmlt Htgh Ltmtt IRPD RPDLimit euat I I Run: |CP2-C_080619A Batch: R't02975 06/19/08 16:1 1 Method Blank ND mg/L ND mg/L ND mg/LND mg/L ND mg/L ND mg/L ND mg/L ND mg/L ND mgA ND mgA ND mg/L ND mg/L ND mg/L 0.04 mg/L ND mg/L Laboratory Forfified Blank0.981 mdl48.8 mgtr 0.990 mg/l_ 0.9E1 mdL 1.O4 mg/L 1.04 mg/L 49.S mg/L 0.981 mg/L 0.949 mg/L 0.972 mg/L 42.5 mg/L 46.0 mg/L1.02 mg/L1.09 mg/L 0.996 mg/t- Sample Matdx Spike 4.86 mgA751 mg/L4.8t mg/L 4.91 mg/t 13.2 mg/L5.04 mg/L477 mg/L10.2 mg/L 0.0003 0.1 0.002 0.002 0.005 0.01 0.(N 0.0003 0.003 0.004 0.02 0.8 0.0, 0.003 0.002 0.010 980.50 980.050 990.010 9E0.030 1040.050 1040.50 990.010 980.10 950.050 970.50 8s0.77 920.10 1020.10 105 0.010 100 0.010 971.0 870.050 970.010 970.030 930.058 1011.0 960.010 96 Run: |CP2-C_0BO6I9A 85 12585 125 85 125 85 125 85 125 85 125 85 12585 12s 85 125 85 12585 125 E5 12585 lzs85 12585 12s Run: |CP2-C_080619A70 13070 130tO 13070 13070 13070 13070 i3oZ0 130 06/19/06 16:1S 06/19/08 19:34 T T t Qualifierc: RL . Analyte reponing limit.ND - Not detected at the reporting limit. I - f,f FffiilH?'?Ef{?8tr2,Y,?,;a!'f,f ligffli!fl !-rf"i€iLi,i;EE:ii#,,,fr ,\if i,,ffJiiff , T I QA/QG Summary Report Client Denison Mines (USA) Corp Project 2nd Quarter Semi-Annual Groundwater Report DaE: 07t17fi8 Work Order: C08060292 T I I t T I T T t T T T t T Analyte Methorl: E200,7 Sample lO: C08060292.0i18irs2 Molybdenum Nickel Potassium Sodium Tin Vanadium Rssult Unlts Sample Matrix Spike4.79 mg/L4.90 mg/L240 mg/L470 mg/L4.98 mg/L4.49 mgA Run: lCP2€_080519A 70 13070 13070 13070 13070 130tO 130 Run: |CP2-C_000619A 70 13070 13070 1307A 130t0 13070 13070 i3o70 13070 13070 r3070 13070 13070 13070 130 RL %REC Low Ltmtt Htgh Ltmtt RPD RpDlimtt euat j Batch: R102975 06/19/08 t9:34 Sample lD: C08060292-01iBMSO2 Sampte Matrix Spike DupticateBeryltium 4.99 mg/LCalcium Z6g mg/LChromium S.O2 mg/LCobalt 5.01 mg/Llron iS.S mg/LLead 5..l5 mg/LMagnesium 4gt mg/LManganese $.4 mg/LMolybclenum 4.99 mg/LNickel S.O3 mg/LPotiassium ,.g mg/LSodium 470 mgtLTin S.09 mg/LVanadium 4.69 mg/L 0.10 960.050 971.0 903.9 930.10 1000.10 90 0.010 1001.0 940.050 1000.010 990.030 960.0s8 1031.0 1000.010 990.10 1000.050 991.0 893.9 93 0_10 1020.10 94 @19/08 19:38 20 2A 20 20 20 20 20 20 20 20 20 20 20 20 2.8 2.3 3.2 2.1 1.7 2.1 2.1 't.6 4.0 2.7 0.8 0.1 2.2 4.3 Qualiflers: RL - Analyle reporting limit. T t ND - Not detected et the reporting limit. T - EfF[!{'ilf'?E{%[1!r,{f;"?'!;!ir:;il i#!"3"1!tr3;,5!*,?r,l#;,,f,i:#i;ff,;,,i, OA/QC Summary Report Clienfi Denison Mines (USA) Corp Project 2nd Quarter Semi-Annual Groundwater Laboratory Foilifi ed Blank 0.0530 mg/L 0.0524 mg/L 0.0526 mg/L 0.0525 mg/L 0.0532 mg/L 0.00523 mg/L 0.0529 mg/L 0.0529 mgtL 0.0521 mgA 0.0173 mg/L 0.0531 mS/L 0.0533 mg/L 0.0534 mg/L Method Blank 0.0007 mg/L Laboratory Fortified Blank0.0540 mgA Post Digestion Spike 0.0547 mg/L 0.0390 mS/L 0.0494 rng/L 0.0538 mg/L 0.0542 mg/L 0.00504 m/L 6E-05 3E-05 1E-05 7E-05 3E-05 EE.O5 5E-05 0.0007 0.0002 3E-05 1E-05 1E-05 3E{5 0.0010 106 0.0010 105 0.0010 105 0.0010 105 0.0010 106 0.0010 105 0.0010 106 0.0010 106 0.0010 1040.0010 870.0010 106 0.00030 107 0.0010 107 0.0003 T T I I t t T T I T T t T T T I I t Sample tD: LRB Arsenic Beryllium Cadmium Copper Lead Mercury Molybdenum Nickel Selenium Silver Thallium Uranium Vanadium Sampte lD: LFB Arsenic Beryllium Cadmium Copper Lead Mercury Molybdenum Nick6l Selenium Silver Thallium Uranium Vanadium Sample lD: LRB Zinc Sample lO: LFB Zinc Sample tD: C08060292.0108MS4 Arsenic Beryllium Cadmium Copper Lead Mercury Method Blank 6E-05 ND 2E.05 ND ND NO ND ND 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 mS/L mga Run: ICPMS24-090627A Run: |CpMS2C_O8O62ZA 85 11585 11585 115 85 115 E5 115 85 ils 85 11s 85 115 65 11585 11S8s 115 85 115AS 115 Run: ICPMS2€_080627A Run: ICPMS2€_080627A 85 115 Run: ICPMS2€_OBO6Z7A 7A ,30 z0 13070 13070 13070 130 70 ,30 Batch: R103389 06t27t08 123a 06127108 12:39 0.0010 107 06127108 18:?0 06D7108 18:27 06127108 19:4e0.0010 to60.010 780.010 940.010 9s0.050 1080.0010 101 Qualifierc: RL - Analyte reporting limit. Report Date: 07l1ll19 Work Order: C08060292 RL %REC Low Ltmtt High Limtt ND - Not detected at the reporting limit. T ENERcy LABORATOBEA tNC. . pO93 Salt Creekr"iF;;isiz;5:i;;tr:7o77ii.dirc-: F; ibvS;; ffi!.11w3;,I3rpi,lr;?,,;ff:f:!;ffir,1tr, 70 I T T t T I T I t t t Sample lD: C08060292-{,i0BMS,l Molybdenum Nlckel Selenium Silver Thallium Uranium Vanadium Zinc Post Digestion Spike 0.0665 mg/L 0.112 mg/L 0.0539 mg/L 0.00270 mg/L 0.0546 mgA 0.0599 mgtL 0.0516 mg/L 0.168 mg/L 130 1.5 5.6 1.7 0.5 0.1 2.6 0.0 1.4 3.6 0.0 0.0 't.5 0.0 0.2 20 20 20 20 20 20 20 2A 20 20 20 20 20 20 QA/QG Summary Report Client Denison Mines (USA) Gorp Project: 2nd Quarter Semi-Annual Groundwater 0.10 1120.050 990.0010 1040.010 11 0.10 109 0.00030 1140.r0 1030.010 85 Sample lD: C08060292-0l0BilSD4 post Digestion Spike DuplicateArsenic 0.0538 ms/L o.oolo 104Beryllium 0.0368 ms/L o.o1o 73Gadmium O.Mg6 mg/L 0.010 93copper 0.0540 ms/L 0.010 96Lead 0.0542 mS/L O.0SO 108Mercury O.OOS17 mg/L O.O01O 103Molybdenum 0.0651 mg/L 0.10 lo9Nickel 0.110 rE/L O.OSO 96selenium o.o52o mg/L o.oolo 101silver 0.001E7 mg/L 0.010 9Thallium O.OS44 mg/L O.1O 108Uranium O.OS89 mg/L O.OOO3O 112Vanadium O.OS14 mg/L 0.10 103Zinc 0.162 mg/L 0.010 E4 Run: ICPMS24_080627A 70 13070 13070 13070 13070 13070 13070 13070 130 Run: ICPMS2-C-O8062ZA 70 13070 13070 13070 13070 13070 13070 1s070 13070 ,307A 13070 13070 13070 130 Report Date: 07117t08 Work Order: C08060292 Batch: Rl03389 06127108 19:4A 06127108 19:i5 RL %REC Low Llmit Htgh Ltmit RpD RpDLImir 1.4 ,04 100 t T I I T Method; E20O.B Sample lD: LRB Zinc Sample lD: LFB Zinc Sample tD: C08060rt48-00lFITS4 Zinc Method Blank 0.0003 mg/L Laboratory Fortified Blank 0.0524 mS/L Post Digestion Spike O.7A2 mg/L Samplo lD: CO806O/I48.0O1FMS&[ post Digestion Spike DupticateZinc0.773 mg/L 0.0003 0.0010 0.010 0.010 Run: ICPMS2C_0806308 Run: ICPMS2{_0806908 85 115 Run: ICPMS2€_0806308 70 130 Run: ICPMS2€_0A06308 70 lso Batch: R103513 06/30/08 12:16 06130108 12:23 OGl30lO8 14:42 06/30/08 14:4A 20 Qualiflerc: RL - Analyte reporling limit. S - Spike recovery outside of advisory limite.I I ND - Not detocted at the reporting limit. EtlEPcvLAaoRAToBtF_s:^t!_c: '-21essaltcreekltlqtlwaype6@ ,p.o. Box32i8 . caspe: wys2602rot Frce aaa'zsi'osrs ' soz.iss.oss , rax obiiil.rois :dir;idri66yE:;ro, . www.energytab.com QA/QG Summary Report Glient Denison Mines (USA) Corp Projecfi 2nd Quarter Semi-Annual Groundwater Report Datr: 07117108 Work Order: C08060292 t T T T t I T Amlyte Method: E350.{ Sample lD: MBLK Nitrogen, Ammonia as N Sample lD: LFB Nitrogen, Ammonia as N Sample lD: C0806029240!C Nitrogen, Ammonia as N Sample lD: C08060292-003C Nitrogen, Ammonia as N SamplelD: 80806O87-0OIAMS Nitrogen, Ammonia as N Sampte tD: B0b06o(t7.0olAMsD Nitrogen, Ammonia as N RL ToREC Low Limit Htgh Limit RPD RPDLlmit eual Method Blank ND mg/L Laboratory Forlified Blank 1.05 m/L Sample Matrix Spike 0.e98 mlL Sample Matrix Spike Duplicate 0.913 mglL Sample Matrix Spike 2.33 mg/L Sample Matrix Spikc Duplicate 2.33 mg/L Run: SU&8112139 Run: SUB.8112139 90 110 Run: SUB-8112139 90 110 Run: SUB-BI12139 90 110 Run: SUB-8112139 90 110 Run: SUB-8112139 90 110 Betch: B_R1 121 39 06/10/08 t0:33 06/10/08 10:34 06/10/08 10:55 s 06/10/08 10:5610s 06i/10/0{t 11:i0 06110108 11:11 10 0.02 0.I0 0.r0 0.10 0.10 0.I0 1.7 0.0 106 86 88 99 99 t T T t I t T llethod: E3S3.2 Sample lD: MBLK Nitrogen, Nitrate+Nitrite as N Sample lD; LFB Nitrogen, Nitrate+Nltrile as N Sample lD: B08060820.004DMS Nitrogen, Nitrate+Nitrite as N Sample lD: 80806{1820.004DMSD Nitrog€n, Nitrat€+Nitrite as N Sample lD: 80S060929-003AMS Nitrogen, Nitrate+Nitrite as N Sample lD: 808060929{OOAtutSD Nitrogen, Nitrate+Nitrits as N Method Blank 0.007 mgtL Laboratory Fortified Blank0.975 mg/L Sample Matrix Spike 0,996 mg/L Sample Matrix Spike Duplicate 0.986 mg/L Sample Mahix Spike 1.09 mg/L Sample Matrix Spike Duplicate 1.08 mg/L Run: SUB-8112479 Run: SUB-BI 12479 90 110 Run: SUB-B112479 90 110 Run: SUB-8112479 90 110 Run: SUB-BI t2479 90 110 Run: SUB-8112479 90 110 Batch: B_Rt12479 06/17108 09:'t6 06/17108 09:'17 06,t17t0$ 12:15 06t171O8 12:16 10 06/17108 13:43 OGl17l08 13:44 10 0.002 0.050 0,050 0.050 0.050 1.0 0.050 99 100 99 102 ,01 T I T T T Qualiflers: RL - Analyte reporting limit. S - Spikc recovery outsue of advisory limits. ND - Not detected at the reporting limit. I T I crient: project: - ENEnGy LAB0PAT0HES:!!$9: '_p093 salt creek Hiq-hway (8p601) . po. sox s25a , caspil rwa260zTolt Free 8ffi.p3i.0s$ . eoz.bs.oio-:-iai ebi.ffi.r6g9 , casper@energylab.mm ,wwwenergyrab.com Report Da|ez 07117t08 Work Order: C08060292 QA/QC Summary Report Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater T RL ToREC Low Limit High Llmit RPD RPDLimlt euat 11 r09 T T T t T I I T t I I t illethod: E900.1 Sample lD: IttBGA.0t4t Gross Alpha minus Rn & U Sample tD: LCS€A{14I Gross Alpha minus Rn & U Sample lD: C08060292{t0SDilS Gross Alpha minus Rn & U Sample lD: C08060292{OSDITISD Gross Alpha minus Rn & U Mehod Blank 0.8 pCi/L Laboratory Control Sample 29.5 pCi/L Sample MatrixSpike 30.7 pCi/L Sample Matrix Spike Duplicate27,6 pCi/L Run: G5000W_08062SA Run: G5000W_0E062SA70 130 Run: G5000W_080625A 70 130 Run: G5000W_08062SA70 130 Batch: cA-0141 06/30/08 13:53 06/30/08 13:S3 06/30/08 13:S4 06/30/08 13:54 21.7 Qualifiers: RL - Analyte reporting limit.I ND - Not detected at the reporting limit. I ENEBQT LABORATORIES, tNC. . pJgJ satt creek Hjgllway (sz60t) , po. Bqx Jp58 , casper wy a260pToll Fre 888.23i.0515 ' 90245.0515 , Fax goz&a.t&e';'c;spe;iiieiiisylab.'cun . wwwenergytab.com T t QA/QC Summary Report Client Denison Mines (USA) Corp Prdect 2nd Quarter Semi-Annual Groundwater Report Date: 07117108 Work Order: C08060292 T I t T T I I t t I T t T llnalyt" Method: SW8260B Sample lD: 09Jun-08_MBLK_s Acetone Benzene Ca6on tetrachlodde Chloroform Chloromethane p+p-Xy'enes Methyl ethyl ketone Mehylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr 1,2-Dichloroberuened4 Sun: Dibromofluoromethane Sun: p-Bromofluorobenzene Sun: Toluene-d8 Sample lD: C08060292-011EMS Acetone Benzene Carbon tetrachlorkJe Chloroform Chloromethane Methyl ethyl ketone Mefiylene chlorlde Naphthalene Toluene Xylenes, Total Sur: 1,2-Dichlorobenzened4 Surr: Dibromofl uoromethane Sun: p-Bromofl uorobenzene Surr: Toluene-d8 Sample lD: C08060292{1.!EMSO Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthelene Mehod Blank ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND uS/L ND ug/L ND ug/L ND ug/L ND ug/L Sample Matrix Spike4600 ug/L210 udL 240 uS/L270 ug/L260 ugA 4500 ug/L250 uS/L200 ug/L 240 ug/L750 uS/L Run: 5975VOC1_080609A 0,5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 107 104 90 98 115 10 106 10 12210 13310 128 20 11310 12410 100 10 11810 125 1.0 971.0 1101.0 108 1.0 112 1't110 11110 11810 12710 13620 11310 122't0 106 80 120 70 13080 120 80 120 Run: 5975VOC1_0E0609A 70 13070 130 70 13070 13070 13070 13070 13070 13070 13070 13080 120 70 ,3080 120 80 120 Run: 5975VOC1_08O609A 70 1307A 13070 13070 13070 13070 13070 13070 130 Batch: R102416 06/09/08 11:34 06/09/08't6:50 OAl09lOB 17125Sample Mahix Spike Duplicate4400 ug/L220 ug/L240 uS/L250 uyL270 ug/L4500 uS/L240 ug/L210 ug/L 5.2 3.3 4.6 5.7 0.5 2.0 5.0 20 20 20 20 20 20 20 RL %REC Low Limit High Ltmlt t T I Qualifiers: RL -Analyte reporting tilnit. S - Spike recovery outside of advisory limits. ND - Not detected at the reporting limit. I ENEflGY LABORATOEIES, Qlq: '_2393 salt creek Highway (82601) . P.o. Box 32i8 . caspil w a2002 Toll Free 888.235.0515 ' 307.235.0515 ' Fax 302234.1639 , 'casper@energytab.mm , wwrehergytab.mm T I QA/QC Summary Report Client Denison Mines (USA) Corp Projecft 2nd Quarter Semi-Annual Groundwater Report Date: 07/17108 Wort Order: C08060292 I T I t I T I I T t I t T T Method:sw8260B Sample lD: C08060292-011EMSD Toluene Xylenas, Total Surr: 1,2-Dichlorobenzene-d4 Su n: Dibromof, uoromethane Sun: p-Bromofl uorobenzene Sur: Toluene'd8 Sample lD: 09Jun.08_LCS_16 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surn 1,2-Dichlorobcnzened4 Surr Dibromofl uorornethane Surr: p-Bromofl uorobenzene Sun: Toluene-d8 Sample Mahix Spike Duplicate 24O udl 750 uS/L Run: 5975VOC1_080609A70 130 70 130 80 12070 130 80 12080 120 Run: 5975VOC1_080609A 70 13070 1307A 13070 13070 13070 13070 13070 130 70 13070 130 80 120 70 130 80 13080 120 10 119 10 126 1.0 95 1.0 102 1.0 105.l.0 110 1U1.0 ,10 ,.0 1141.0 122 1.0 122 20 106'1.0 112 1.0 104 1.0 122 1.0 1271.0 95 1.0 981.0 1041.0 1 10 1.4 0.6 0.0 0.0 0.0 0.0 Batch: R102416 06/09/08 17:25 20 2A 10 10 10 10 06109/08 18:01Laboratory Control Sample 21O uglL 11 ug/L11 ug/L 12 ug/L12 ug/L210 ug/L11 ug/L 10 ug/L12 ug/L 38 ug/L RL ToREC Low Llmlt Hlgh Llmlt Qualifiers: RL - Analyte repofting limit. t I ND - Not detected at the reporting limit, IE il*iasg+ c1oo EE{I ; $a $ls r:FElst- - --ffiII6;E Etrf .9 oaE cf,p=tr H5e i.gsE (J d6c[ !{r--9n rAr xLf )6o roqlrl \9 7 oHJJ+oE= iy.8iD ohit" *2{.Poo Jeqlo,Gsseolf uo0ete6en sgps/sfl€ rqEm rty 6g1gi11y:edtrlqdureg sJeulBluoc Jo JOqurnN at d*Ol-io5 S{.,o€LE "9o CL!to-EL' #sEiiJ J-9 'iE o99 <(U=r JEr N5e < Ir1!rEOE dHtr D =o 0& EB =bi\ -co-O iioll- 6 E$() BE6g5E=o !o 5oIue rr l$ ffll e i$lF- E e lf 0E 5 lEss 'IEig -IEEE FIfFE IEEE IEE € JiEE ilea E ilsgE l$$$ IEEI IEIg l"e* g lsfe9=E.eg> g J IEP lI gr lr ErI IffI I H;I I gEI t$r/ TI: H$ T T T lr lrrl T t T T T I Energy Laboratories lnc Workorder Receipt Ghecklist Denison Mines (USA) Corp Login compteted by: Jennifer McVay Reviewed by: Tessa parke Reviewed Date: 6/1 112OOB4:54:00 pM Shipping container/@oler in good condition? Custody seals intact on shipping contain ertcoole? Custody seals intact on sample botfles? Chain of custody present? Chain of custody signed when relinquished and received? Chain of custody agrees with sample labels? Samples in proper container/botile? Sample containers intact? Sufficient sample volume for indicated test? Allsamples received rvithin holding time? Container/Temp Blank t€mperature in compliance? Water - VOA vials have zero headspace? Water - pH acceptable upon receipt? -_-;::::--:::::::::::::::::::::::::::::-- Yes @ Yes fl Yes fl Yes fl Yes [l Yes [[ Yes fi Yes I Yes Bl Yes fi Yes fl Yes fi Yes [l Not Present D Not Present I NotPresent [l 3'C On lce No VOA viats submitted tr NotApplicabte tr rffitffitilliltflf ffi flilflitililfltffi c08060292 Date and Time Received: 6/6/200g 9;30 AM Received by: jm Carrier name: Next Day Air No fI NoE No fI NoD No fI NoE NO fI NoM NoE NoE NoE NoE No E] Sample MW g2 one VOA vial received broken, t EfFEfil#i,?E{%lliri{,?,;?'!,f1!lg5;l#g!.:#1,;%;:;3rhr,11fr;,,f,f;t:i;ff,"trfi, I Date: 17-Jul-08I T T I T T I t T T I T t T T CLIENT: Project: Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater Sample Delivery Group: C08O6O292 CASE NARRATIVE THIS IS THE FINAL PAGE OF THE IABORATORYANALYTICAL REPORT ORIGINAL SAMPLE SUBMITTAUS)A',originar sample submittars havl-6een retumed with the data package. SAMPLE TEMPEMTURE COMPLTANCE: 4"C (*2.C)Temperature of samples ru""irJU ,"y ""t Ui il::ij;fif iil,JJi"t"rv "*;;ir'"6;;f[:'i:l".1JJ,Tr'g$?#?,ilATJ5f.*,:Jf,"jfi^"."?T,ifi;,[*: GROSS ALPHA ANALYSIS ll"llfl1fi,flS'?ifl:i'r?'f,H!T:,:[:i3:ii L-J?[[XT;:ft:Hi:[Xf,rer method ror,ow rDS waters Data provided RADON IN AIR ANALYSIS ]ff f.1[T'T,iffT."l'*:,fi"'?"Tff.'3-H:];Jtr"H"-ffiilii':::HHJffi"?::,f;fXl[::?i:ffi,:yJ;Jl#,Tff,"n beginning of counting shoutd noi;ice;fi ;il;. SOIUSOLID SAMPLES All sampres reported on an as received basis unress othenarise indicated. ATRAZINE, SIMAZINE AND.PCB ANALYSIS USING EPA 505Data for Atrazine and simazingire iJp"nIl-tril epn szb)-,iot from EpA 505. Data reported by ELr using EpA methodi'"'"[t?f*il,,""X'::'ff,"""J""[ir.Si.ilini::,lf i\t?;ihffi'fiil ?Ii ",, "","nti" iidii,t il;"*or, the sampre SUBCONTRACTING ANALYSIS subcontracting of samole "n1y"9" to an outside l.lbgralov ryay be required. rf so, ENERGy LABoMToRTES wi, utirizeHflillilffJ,i,tfJ::s'or qu"tifiia c;il;"il;;rto'i"Jioi'tr,iJi"'riiiliiv such raboratories wiil be indicated within the B.FlNqH LABOMTORY LOCATTONSeli-b - Energy Laboratories, lnc. _ Biilin-qs. MT llig - lnersv Laboratories, r".. - ciGi", vrii lll-l --.*rsy.Laboratories, tnc. _ Helena, MTetFr - rnergy Laboratories, lnc. _ Rapid iity, SOeli-t - Energy Laboratories, fnc. - Coriege Si"t,:o-", fX CERTFICATIONS: USEpA: rrW00002: FL_D9L!!E!4C: E87641;Arizona: 4161699; Catifornia: o211BCAoreson: Wy20o0o 1 : utatr : sozzisbJ G vrigi;rf,,'to0s7; washin ston : C 1 903 ISO 17025 DISCI-AIMER: The resurts of this Analyticar Report rerate onry to the items submitted for anarysis. ENERGY LABoRAToRIES' lNc' - CASPER'WY certifies..that certain method serections contained in this report meetrequirements as set forth oyneauwei"-riiiing""rtoritiei. doile ,"]uril'r"qr""ted by the crient may not be covered"[l!'ffi rTl:ljllil;i'ttffi ?:[f;ji j:ht#tmrum"$fnn*shoudbec..tin6oin.*;;;il; 5:LTiJ:"rnH,:Jffiirr"JH,lY to provide vou with this anarvticar service. For addirionar informarion and services visit our T T EfF1!{,Hf,?Ef,'%1tr2;{,?;,r?;!lg5;!ilg!-:'J!;3i3;i3,pd,ff!,;,,f*:,i;i#,"1tr,I T I I I T T I ANALYTICAL SUMMARY REPORT July 17, 2008 Denison Mines (USA) Corp 6425 S Hwy 191 Blanding, UT 84511 Workorder No.: C0g060706 Project Name: 2nd euarter Semi_Annual Groundwater Quote lD: C1640 - pOC Wells / Monthly Groundwater Sampling Energy Laboratories, lnc. received the following q ,r, Sample lD Client Sample lD Collect Date Receive Date Matrix Testc0806070&001 MW23 06/09/08 15:20 06/13/0s Aqueous rrltetarsuyrcelceusloiirorr"J Nitrogen, Ammonia c08060706-002 Mw 25 Nitrogen, Nitrate + Nitrite 9.r.9:: |tq!u -inus Rn222 and UraniumSW8260B VOCs, Standard List06t12108 08:55 06/1 3/08 Aqueous Metals by lCp/lCpMS, DissolvedAlkalinity QA Calculations Chloride Fluoride Nitrogen, Ammonia Nitrogen, Nitrate + NitritepH Gross Alpha minus Rn222 and UraniumSolids, Total Dissolved Sulfate S\IE260B VOCs, Standard Lisr T T I T t I T C0806070e003 Trip Btank 06nA081S;20 06/13/08 Aqueous SW8260B VOCs, Standard Listc08060706-004 MW23 06117 108 1 a:12 O6t2OtAB Aqueous Alkalinity Chloride Fluoride pH Solids, Total Dissolved Sulfate AttS'3i',lil?;'il"4T:::i^""%*:ti"#,Htheanarvsesarenored,n,nffi lf you have any questions regarding these tests results, please call. RePortApproved By: Nr* rKr^\W T t T t t rot rree aaaies-ii7i 1'sb).,l'!,fyrg:;;lffiy:L'y^(!^?-?2. PO.Boxaeia . Casper; Waz6(caspet@energylab.con : mu eircr!1ytaO. coii ,w82602 I T Client: Project: QA/QC Summary Report Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater Report Date: Wort Order: 07t17t08 c08060706t I T t T Analyts Result Units Method: A23Z0B Sample lD: MBLK-I Alkatinity, Total as CaCO3 Carbonate as CO3 Bicarbonate as HCO3 Sample lD: LCS., Alkalinity, Total as CaCO3 Sample tD: C08060696.t 0tBilS Alkalinity, Total as CaCO3 Sample lD: C08060696-{tOtBt SD Alkalinity, Totat as CaCO3 Method Blank ND mg/t ND mg/L ND mg/L Laboratory Control Sampte 194 mg/L Sample Matrixspike 299 mg/L Sample Matrix Spike Duplicate 300 mg/L Run: MANTECH_O8O617A Run: MANTECH_080617A 90 110 Run: MANTECH_080617A 80 Da Run: MANTECH_0BO6,|7A RL %REC Low Ltmit High Limit RPD RpDLimit eual I Batch: Rl02781 06117108 1O:520.2 1 1 1.0 ,.0 1.0 06/17108 10:59 06117108 12:14 O5117108 12:22 104.4 T T I T I t T T T T t Methodl AZ32O B Sampte lD: IfBLK-l Alkalinity, Totat as CaCO3 Carbonate as CO3 Bicarbonate as HCOS Sample lD: LCS.I Alkalinity, Totat as CaCO3 Sample tD: C08060706-004AMS Alkalinity, Total as CaCO3 Sampte tD: C08060706{04AMSD Alkalinity, Toiat es CaCO3 Method Blank ND mg/L ND mg/L ND mg/L Laboratory Control Sample 1E8 mg/L Sample Matrix Spike 3SB mg/L Sample Matrix Spike Dupticdte360 mg/L Run: MANTECH_080623A Run: MANIECH_080623A 90 110 Run: MANTECH_080623AB0 120 Run: MANTECH_080623A B0 1ZO 0.2 1 1 Batch: Rl03110 06t23108 1O:Sz 06/23/08 10:S9 06123/08 1 1:53 06123t08 12:00 10 1.0 '1.0 1.0 Qualifiens: RL - Analyte reporting limit. ND - Not detected at the reporting limit. Ef F[!{,#!'ffi{?9[F2i{f;,i?'!;!ig:;;r##.!,J!,igia;,:;EEr,lff r;,,f,::f :lbff :1tr, t T T T I I t Client: Project: Analyte Result QA/QC Summary Report Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater Report Date: Work Order: 07117t08 c08060706 Units RL %REC Low Limit Htgh Limit RPD RPDLImit QuaI Batch: 08061 7_1_SLDS-TDS_W Run: BAL-1_0806178 Run: BAL-i_0806178 101 90 110 Run: BAL-1_0806178 98 90 110 Run; BAL-1_0806i78 98 90 110 Run: BAL-1_0806178 100 90 110 Run: BAL-1_0808178 Method: A2S40C Sample lD: MBLK1_090617 Solids, Total Dissotved TDS @ 1gO C Sample lD: LCS!_0806{7 Solids, Totat Oissotved TDS @ 180 C Sampto tD: C08060699_{,08AMS Solids, Totat Dissolved TDS @ 180 C SamplelD: CO8O6O699.0OAAMSD Solids, Totat Dissolved TDS @ tBO C Sample tD: C08060635-00.|AMS Solids, Totat Dissotued TDS @ 180 C Sample tD: C08060G3S-001AMSD Solids, Total Djssolved TDS @ ,gO C Method Blank 't0 mg/L Laboratory Control Sample 10,0 mg/L Sample Makix Spik€ 2450 mg/L Sample Matrix Spike Duplicate2420 mgA Sample Matrix Spike 2440 mg/L Sample Matrix Spike Duplicate2440 mg/L l0 10 06117108 09:14 06117t08 09:14 06117108 O91t 06/1208 09:ta 10 06117108 11.40 06/17108 00:00 10 1.5 10 r00 90 t T T t I T I 110 0.1Method: A2i00 C SamptelD: MBLK1_080624 Solids, Totat Dissotved TDS @ iSO C Sample tD: LCSI_080624 Solids, Total Dissolved TDS @ 1g0 C Sample lD: C08060706-{!O4AI[S Solids, Total Dissolved TDS @ 180 C SamplelD: C0806070G-0BAMSD Solids, Totat Dissotved TDS @ 180 C Method Blank ND mg/L Laboratory Control Sample1020 mg/L Sample Matrk Spike 5480 mg/L Sample Matrix Spike Duplicate5500 mg/L Run: BAL-1_0806248 Run: BAL-1_080624890 110 Run: ML-1_080624890 110 Run: BAL-1_0806248 Batch: 080624_1 _SLDS-TDS_W 06124t08 143a 10 06124108 14:35 06l24lQB 14:36 06124108 14:16 't0 99 10 100 90 110 0.3Method: A4SOO-C! B Sample lD: IUBLKg-080624A Methoct Btank ND mg/L Sample Matrix Spike 148 mg/L Sampte Matrix Spike Duplicate 149 mg/L Laboralory Control Sample 3580 mg/L Chloride SamptetD: C0EO6O7O6-0O2OMS Chloride SamplelD: C08060706{O2DMSD Chloride SampletD: LCS35-080624A Chloride 1041.0 1.0 1.0 'r01 Ru n : T|TRATION_080624A Run: T|TRAT|ON_OBO624A 90 110 Run : TITRAT|ON_080624A 90 110 Run: TITMTION_080624A 90 ,10 Batch : 080624A-CL-TTR-W 06/24108 09:56 O6lZ4tOe 11:13 06tZ4t0B 11:140.8 10 06t24108 11:i? T t T T T Qualifiers: RL - Analyb reporting limit.ND - Not detected at the reporting limit. I I t T I T t Glient: Project: f,fF2!{,i1,1?81,,%1,,i;i{f;,iry;yig5;{i{gg-:[f,;3i3;f;3rtrd,:#,,,,#:l:i;ffx;tr, ll/lethod: Sample tD: Fluoride Sample lD: Fluoride Sample lD: Fluoride Sample lD: Fluoride 44500.F c MBLK.I LCS-t c0E060706.002DMS c08060706-0o2DMSD Method: A4SOo-F C Sample tD: MBLK.I Fluoride Sample tD: LCS-I Fluoride SamplelD: C08060933{!02AMS Fluoride Samplc tD: C08060933.002AMSD Fluoride Method: A4SOO.H B Sample lD: tCVt_0806i6_1 pH Methodl Sample tO: pH 44500+t B G08060699-{roTADUP Result Units Method Blank ND mg/L Laboratory Control Sample0.980 mg/L Sample Matrix Spike 1.28 mg/L Sample Makix Spike Duplicate1.28 mg/L Method Btank ND mg/L Laboratory Control Sample,.00 mg/L Sample Matrix Spike1.08 mg/L Sample Matrix Spike Duplicate1.0E mgtL Sample Duplicate 7.i0 s.u. lnitial Calibration Verification Standard6.88 s.u.0.010 Sample Duplicate 7.93 s.u. lnitial Calibration Verification Standarct6.90 s.u Run: MANTECH_08062SA RUn: MANTECH_080625A90 110 Run: MANTECH_08062SA 80 120 Run: MANTECH_000625A 8o 1zo Analytical Run: 102 Batch: 090616 Run: ORTONSSSA_0806 1 6A 0.1 Analytical Run: ORIONSSSA_ 102 Batch; 080623_2_pH-W Run: OR|ONS5SA_OBO623B QA/QC Summary Report Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater Report Dale: O7t1Z, Work Order: RL %REC Low Lirnh High Limit RpD -1Qual I Rl 03022 Run: MANTECH_080620A Run: MANTECH_080620A 90 110 Run: MANTECH_080620A 80 120 Run: MANTECH_080620A 1 1:04 98 96 96 1 1:07 12:09 12:12 T T T T t t T 0.05 0.10 0.10 0.10 0.05 0.10 0.10 0.',0 0.010 t01 100 10, ,01 R103239 10:25 1O,,27 10:44 1O:47 16A 14:20 1 14:520611 ,0Method: Sample lD: pH A4500.H B lcvr_0E0623_2 T T T T T Methodl A4S(X)-H B Sample lD; C0800l021.0OlADUp PH Qualifierc; RL - Anatyte reporting limit.ND - Not detec{ed at the reporting limit. 0.7 to I T T I I I T T Ef Ffl!{*2?'?#{%11'ti{,?,;'!'i;!ir:trf ##-:[!ffg%;,r$rf#,rtr?;,,f,1:f :i;ff :":f,i, Report Date: llVork Order: Method: A4SO0-NH3 G Sample tD: MBLK-1 Nitrogen, Ammonia as N Sample lD: LCS-2 Nitrogen, Ammonia as N SamplelD: G0806042S-0|4CMS Nikogen, Ammonia as N Sample lD; C08060425.014CMSD Nitrogen, Ammonia as N Method: A4500€O4 E SamptotD: LCS-i-080620 Sulfate SamplelD: MBLK-1_080620 Sulfate Sample lO: C08060783-{r0iBMS Sulfate Sampie tD: C08060763-0OtBMSD Sulfate lilethod: A4S0O€O4 E SamplelD: LCS-1_0E0623 Sulfate SamplelD: MBLK-1_080623 Sulfate SampletD: C08060706-0O4AMS Sulfate SamplelD: C08060706.004AMSD Sulfate Result Unlts Method Blank ND mElL Laboratory Control Sample 21.9 mg/L Sample Matrix Spike 2.54 mgA Sample Matrix Spike Duplicate 2.57 mg/L RL %REC Low Limit High Limlt RpD Run: TECHNTCON_OBoGi 7A Run: TECHNTGON_08051 7A Quai : R102761 7108 10:22 7/08 10:36 11:141.2 20 Batch: 080620_1_TURB-W 10:24 10:26 14:2O 14:211.2 10 Batch: 080623_1_504- 't 1:o9 Laboratory Conkol Sample 4940 mg/L Method Blank ND mg/L Sample Matrix Spike 48.2 mg/L Sample Matrix Spike Dupticate 48.8 mg/L Laboratory Control Sample5040 mg/L Method Blank ND mg/L Sample Matrix Spike 4220 mg/L Sample Matrix Spike Dupticate4120 mg/L 120 Run: TECHNICON_OBO61 7A80 12O Run: TECHNTCON_OBO61 7A80 12o Run: TURB-2_0BO6AOA 90 110 Run: TURB-2_080620A Run: TURB-2_08O6ZOA 90 110 Run: TURB-2_080620A 90 110 Run: TURB-2_0BO6Z3A 90 110 Run: TURB-2_080623A Run: TURB-2_080623A 90 110 Run: TURB-2_OSO623A 90 ilo 0.02 0.20 0.050 0.050 109 82 T t t t t T 59 0.6 1.0 1.0 OE 98 10559 0.6 59 59 06/2sl98 10:44 1O:44 1 1:09106 101 QA/aC Summary Report Client Denison Mines (USA) Corp Project 2nd euarter Semi-Annual Groundwater oattlroe tuz t I T I T Qualifiers: RL - Analyte reporting limit_ND - Not detected at the reporting limit. t T t t I t t T I I T t T I t t T I I ,ffFflf{*'ii'?E{?9f,2"{,?,;'v!;{,g:;fl#g!.3[lgiya;f;E p{,rf,f -,i,::i:!,ffi1;,:, Client Denison Mines (USA) Corp Pro.lieck 2nd euarter Serni_An nual Grou ndweter coball ND myl o.oo2 tron ND mg/L o.oo2ND mdL o.oo5Magnesium ND mg/L O.O4Manganese ND mg/L O.OOO3Potassium ND mg/L 0.02Sodium ND mg/L o.BTin ND mg/L O.OlVanadium O.O1 mg/L 0.003 Sample lD: LFB-080630A r aharqranr E^*in^r 6,_-,_ 2.11 mg/L O.1O 105 70 130 sample lD: LFB-080630A Laboratory Fortified Blank 6.._. r^^^calcium 50.'r msa o.so ,oo Run:lcP24-0*ti:: oo/3ofos 11:olChromium 0.969 mg/L O.0SO 99 ES .rri "o*'n t.t:: 'sl o-o1o es Bs fisMagnesium 1'03 mg/L o'o3o 1o3 Bs ',riManganese 5o'o mg/L o.5o loo Bs pspotassium 0.996 mg/L o.0lo 100 85 fissodium 43.5 mg/L o.5o 87 85 ,rri Tin 49.2 mg/L o.t7 98 8s esVanadium 1.02 mg/L o.to 102 es ,ri1.04 mg/L 0.10 103 BS .,ri Sample lD: C080607&-002CilS2 Sample Matrix Spike E.._. ,^^^catcium ' ,;; ^ -;; Run: |CP2-C-0806308 oorso/da ro:+rchromium ^u:: mg/L 1'o zo t3ocobalt 2.06 mg/L o.o5o 103 70 , r; A tron 2.1o mg/L o.o1o 1os zo ,roMagnesium 2'47 mg/L o.o3o lo8 to ,roManganese 141 mg/L 1.0 105 70 .1 ropotassium 2.zg mg/L O.Olo ioo to ,aosodium 98'5 mg/L 1.0 90 70 ,aoTin 166 mg/L 1.5 103 To ,rovanadium ::: 'sLL o.'lo loo to 130 Sample tD: C080607&-002CilS2 Sample MatrixSpike E.._. ,^^^ ^ ^^- __carcium ' ;;; ^ -::; Run: lcP2-c_0806308 oorsord,:["F y; ilyt ,# 103 # ;:; *,",i0,fux iiil# :dtr i fi sodium 98'5 mg/L 1.0 90 70 130 Tin 166 mg/L 1.5 103 To 130vanadum iii ffii l;: l;: 13 ;:: :lH: rD: c08060704-0o2cusD2 sampre iratrix slJ'f;ou0,,..," 1.0 Run: rcp2€_0806308 ourroro{chromium 2 d', ::; ^ -:: 70 130 2.0 20fi:.,, iirir #r i: i H il * [;ffi- RL - Analyte reporting limit' A - The anaryte rever was greater than four times the spike revet. rnND - Not detected at the reporting limit. a@ordance with the meth& "2" recovery is not calculaied.- '- --" rn QA/QC Summary Report Work Order: I Analfe Result Units RL %REC Low Ltmit High Llmttiiethodr E2ao.T Batch: R103524 calcium "; ' mo/L ^ 4 Run: lcP2-C_0806308 ool$rce ro,szchromium l? ms/L 0.1 Report DaE: O7l1l Sample lD: C08060704-0O2CUSD2 Sample Matrix Spike Duplicate Rrrn. rr:err ^o^^,Ahcalcium 614 mg/L 1.0 Run: lcP2€-0806308 oolso/'4 ts,+schromium 2.03 ;:;; ^ ^:: 70 130 2.0 20 hCobatt 2.09 mg/L O.Oso 1oz To 130 1.3 20 l.tron 2.03 mg/L 0.010 1O2 TO 130 3.1 20_ttag,,esium 'r1: ffi :rJ ,; jl8 3.I ?, I T T f,f F*!{,tlf'?Ef{?trli!ri{f;;'v!;![g:;fr#g!.311:;%;:;Epr,r#;,,f,::r:i;ff 11,;, Report Date: 07/1 Work Order: QA/QC Summary Report Client Denison Mines (USA) Corp ProJect 2nd Quarter Semi-Annual Groundwater 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 t t t I T I t T T T T T I T t I i Analyte Result Units RL %REC Low Ltmtt High Limit Method: E2A0.T Sample lD: C08060704.002CMSD2 Sampte Matrix Spike DupticateManganese Z.Z7 mg/LPotiassium 96.0 mg/LSodium 163 mg/LTin Z.1S mg/LVanadium Zfi mg/L Sample lD: C08061002.{)03BMS2 Sampte Matrix SpikeCalcium 404 mg/LChromium l.9g mg/LCobalt 2.OO rng/Llron 2.09 mg/LMagnesium M2 mg/LManganese 1.g7 mg/Lpotassium y.Z mg/LSodium 131 mg/LTin 2.08 mg/LVanadium 2.03 mg/L Sample lO: C0806{002-003BtttSD2 Sarnple Matrix Spike Dupticate 407 mg/L1.99 mg/L 1.97 mg/L 2.10 mg/L143 mg/L 1.98 mg/L 91.0 mg/L130 mg/L 2.06 mg/L 2,02 mdl 1.0 94 700.050 99 700.010 98 700.030 105 701.0 10,t 700.010 98 701.0 89 701.5 101 700.10 103 700.10 101 70 Run: |CP2-C_0806308 70 13070 13070 13070 l3o70 130 Run: |CP2-C_0906308 130 130 130 130 130 130 130 130 130 130 Run: |CP2-C_0806308 130 130 130 130 130 130 130 130 130 130 0.010 1021.0 881.5 1000.10 1080.10 105 1.0 92 700.050 99 700.010 100 700.030 105 701.0 100 700.010 98 701.0 90 701.5 102 700.10 104 700.10 101 70 1.7 2.6 2.1 1.8 0.1 R1 03s24 17:45 Calcium Chromium Cobalt lron Magnesium Manganese Potassium Sodium Tin Vanadium 0.6 0,3 1.3 0.1 0.7 0.3 0.8 0.6 0.8 0.3 Quallflers: RL - Analyte reporting limit. NO - Not detected at the reporting limit I T t t T I t T T T T T T T t t EfF1!{,i!?,'Ef{%l7i;i{,?,;?'!,flig:;;li!il.:[lruA;iE pi;,#;,ii:#!rffiXitr, Report Da!'p.: Alfi Work Order: RL %REC Low Limit High Limit Run: ICPMSZC_O8O7O3A Quallllethod: E200.8 Sample lD: LRB Arsenic Beryllium Cadmium Copper Lead Mercury Molybdenum Nickel Selenium Thallium Uranium Zinc Sample lD: C0806023S{OIAMS Uranium Sample tD: C0806023S.0O1AMSD Uranium Sample tO; LFB Arsenic Beryllium Cadmium Copper Lead Mercury Molybdenum Nickel Selenium Thallium Uranium Zinc SampletD: C08060706-0O2BMS4 Arsenic Beryllium Cadmium coPPer Lead Mercury Molybdenum Method Blank ND ND ND ND ND 8E-05 6E-05 ND ND ND ND 0.0008 R1 03735 12:32mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mga mg/L mg/L mglL 6E-05 3E-05 1E-05 7E-05 3E-05 8E-05 5E-05 0.0007 0.0002 1E-05 1E-05 0.0003 Sample Matrix Spike 0.0676 mg/L O.OO1O 114 Sample Matrix Spike Duplicate 0.0694 mg/L O.0O1O 118 Run: ICPMS2-C_080703A 70 130 Run: ICPMS2-C_080203A 70 130 Run: ICPMS2€_080703A 85 11585 11s85 115 85 11585 11585 l1s 85 115 85 115Bs 115 85 115 85 115 Ag 115 Run: ICPMS2-C_080703A 70 13070 130Z0 i3070 130 70 13070 130 Laboratory Fortified Btank 0.0521 mgll 0.0s23 mg/L 0.0SlS mg/L 0.0520 mg/L 0.0525 mg/L 0.00520 mg/L 0.0520 mg/L 0.0514 mg/L 0.0523 mg/L 0.0523 mg/L 0.0504 mg/L 0.0521 mg/L Post Digestion Spike 0.0541 mg/L 0.0440 mg/L 0.0488 mg/L 0.0499 mE/L 0.0536 mg/L 0.00523 mg/L0.0649 mg/L 0.0010 104 0.0010 1050.0010 103 0.0010 104 0.0010 105 0.0010 102 0.0010 104 0.0010 1030.0010 10s0.0010 105 0.00030 1A10.0010 104 0.0010 1070.010 880.010 950.010 960.050 107 0.0010 ,050.10 108 ozrosfa rs:oo?.7 20 0203/[816:54 07/04/0b O3:Og 70 130 QA/QC Summary Report Glient Denison Mines (USA) Corp Projoch 2nd euarter Semi_Annual Groundwater 'Analyte Result Unlts T T T Qualifierc: RL - Analyte reporting limit.ND - Not detecled at the reporting limit. 07 20 20 20 20 20 20 20 20 20 20 20 20 2.1 T T I T T T T T T t T t T T T I T T t EtrFEf #itr8tr{?El',2i{,?,;'vi;!t%lilg":[l:;gia;ihtr!,ff r;,,fr ,trf :affi x#, QA/QC Summary Report Cllent Denison Mines (USA) Corp Project 2nd euarter Semi_Annual Groundwater Report Date: 07111 Work Order: Analyte llfethod: E200.8 Sample tD: G08060706.002BMS4 Nickel Selenium Thallium Uranium Zinc Method: E200.8 Sample lD: LRB Silver Sample lD: LFB Silver Sample lD: C0B060BOS-004DMS4 Silver Result Post Digestion Spike 0.0568 mgft 0.0540 mg/L 0.0544 mg/L 0.0627 mgtL 0.0500 mg/L Method Blank 7E-0S mg/L Laboratory Fortified Blank0.0210 mg/L Post Digestion Spike 0.0839 mg/L RL ToREC Low Limit Hlgh Llmlt RPD Sample lD: C08060706-002BMSD4 post Digestion Spiko DupticateArsenic O.OS41 mg/L 0.0010Beryllium O.O4ZA mg/L 0.010Cadmium 0.0497 mg/L O.O1OCopper 0.0499 mg/L 0.010Lead O.OS39 mgA 0.050Morcury O.OOS3S mg/L O.OOIOMolybdenum 0.0659 mg/L 0.10Nickel 0.0569 mg/L 0.050Selenium 0.0542 mg/L 0.0010Thatlium O.OSS4 mg/L O.1O f.ranlum 0.0629 mg/L O.0O03Oanc 0.0496 mg/L O.Olo 0.050 97 0.0010 1040.10 107 0.00030 1130.010 87 107 86 97 96 108 107 110 97 105 109 114 86 Run: ICPMS2{_O8OZO3A 70 130 70 130 Z0 13070 130Z0 130 Run: ICPMS2C_O8O7O3A t0 13070 130 70 13070 13070 130 70 13070 13070 130 70 130 70 13070 130 70 130 0.0 2.8 1.9 0.2 0-6 2.2 0.0 0.2 0.4 0.0 0.3 0.7 Batch: 07t07 Qual R1 03735 103823 Sample lD: C08060805{rO4DMSD4 post Deestion Spike DuplicateSilver 0.Og5S mg/L 3E-05 0.0010 0.010 0.0t0 Run: ICPMS2C_080707A Run: ICPMS2{_OBO7O7A 85 115 Run: ICPMS2C_O8O7O7A 70 130 Run: ICPMS2C_080707A 70 130 Qualifierc: RL - Analyte reporting ,imit.ND - Not detected at the reporting limit. _ENEBGY LAAOfrATOB|Ei tNC. . ZSSO Saft CreekroiiFriiawli'IiiEi'ibTiii'6o': ;;ubitr; il!!.1!!i3i3i,i;3ltri"fiI-,,ffifli;fflitr, QA/QC Summary Report Client Denison Mines (USA) Corp Projech 2nd Quarter Semi-Annual Groundwater Report Da|r; A7t1 Work Order: T I t ! T I t T Method: EiS3.2 Sample lD: ttBLK-l Nitrogen, Nitrate+Nitrite as N Sample tD: LCS.2 Nitrogen, Nitrate+Nitrite as N Sample lD: C08060706{rOlCltiS Nitrogen, Nitrate+Niirite as N Sample lD: C08060706-{,01CMSD Nitrogen, Nitrate+Nihite as N Methodr E9OO.1 Sample lD: MB.GA{144 Gross Alpha minus Rn & U Sample lD: LCS€A-0{,|t Gross Alpha minus Rn & U Sample lD: C08061004.0O1DMS Gross Alpha minus Rn & U Sample lD: C0806i004.{r0tOMSD Gross Alpha minus Rn & U Method Blank ND mg/L Laboratory Control Sample2.74 mg/L Sample Matrix Spike 2.26 mg/L Sample Matrix Spike Ouplacate 2.18 mg/L Method Blank 0.8 pCru Laboratory Control Sample 27.5 pCi/L Sample Matrix Spike 26.3 pCilL Sample Matrix Spike Duplicate 24.8 pCi/L RL %REC Low Limit High Limit RpD Run: TECHNTCON_08061 BA Run: TECHNTCON_O8O61BA 90 110 Run: TECHNICON_O8OG,t BA90 110 Run: TECHNTCON_OBOE1 BA90 110 Run: G5000W_080705A Run: G5000W_O8O70SA 70 130 Run: G5000W_080705A70 130 Run: G5000W_080705A 70 130 Result Units 0.03 0.10 110 0.10 103 0.10 100 R102845 6/08 1 1:30 8/08 1 1:33 11:48 1l:50 T T I T T T T 101 95 89 ad1 10 Batchi cA{144 07108,10817:s2 07t09t08 17..s2 07toat08 17:52 oTnBloE fiis2 23.85.9 T I I t --lQualifiers: RL - Analyte reporting limit.ND - Not detected at the reporting limit. - I ,r?,f !igffl#g!-:#?iiL;ih;E:{"lff ?;,,f,,f iti,,ild,litr, T T T I t T T T T T T ! t T T Clienk Denison Mines (USA) Corp Project 2nd euarter Semi_Annual Groundwater Result Units Method: SW8260B Sample lD: 17"Jun.0g_LCS_3 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Sur: i,2-Dichlorobenzene_d4 Sun: Dibromofluoromethane Surr: p-Bromofl uorobenzene Surr: Toluen+dg SamptelD: i7{un-0g_MBLK_6 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xy'enes Methyt ethyt ketone Methylene chloride Naphthalene o-Xylene Toluene Xlenes, Total Surr: 1,2-Dichlorobenzene{4 Surr: Dibromoliuoromethane Su rr: p-Bromofl uorobenzene Sur: Toluens.dg Sample lD: C0806069i-OOlcMS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Sample Matrix Spike 4000 ug/L2OA ug/L 210 ug/L 220 ug/L 200 ug/L 80 120 70 13080 12080 12O Run; 5975VOC1_080617A 70 13070 130tO 13070 13070 130 Qual R102799 06t17108 12:31 06117lp$ 14:11 Method Blank ND ND ND ND ND ND NO ND ND ND ND ND 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 111 ,05 90 90 9510 10010 10610 11010 98 ug/L ugll ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 06/17lod 19:1s _+.- QA/QC Summary Report RL %REC Low Limit High Limir Laboratory Control Sample250 ug/L 8.9 ug/L 9.7 ug/L9.t ug/L 8.8 ug/L 18 ug/L 200 uS/L 8.2 ug/L 8.6 ug/L 9.2 ug/L 9.8 ug/L 2t ug/L Run: 5975VOC1_080617A124 70 1301.0 89 70 1s01.0 97 70 ,301.0 97 70 1301.0 88 70 1301.0 90 70 13020 100 70 1301.0 82 70 1301.0 86 70 1301.0 92 70 1301.0 98 70 1 301.0 91 70 1301.0 99 80 fio1"0 97 70 1301.0 101 80 1301.0 103 80 12O Run: 597SVOC1_080617A Report Date: 07l1ll0tB Work Order: C08O6d7O6 I T T RL - Analyte reporting lirnit.ND - Not detected at the reporting limit I Ef F*!{'Hf'trf{%112,{,?,;'!'!;!igs;l#g!-:[1ff?;Bi,i;Epi,#l_,,f,f if ii;[d,Ilf!,t T QAIQC Summary Report Client Denison Mines (USA) Corp Project 2nd Quarter Semi-Annual Groundwater Report Dale: OZtlil\B Work Order: C08060706 T Result Units RL %REC Low Limit HiSh Limit RPD RPDLimit euat l It t T T I t T T t I T T T T T Method: SW8260B Sample tD: C08060691-0O1GMS rn+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthatene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Sur: Dibromofl uoromethane Surr: p-Bromofl uorobenzene Surr: Toluenedg Sample lD; C08060691-0OTGMSD Acetone Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chlodde Naphthalene o-Xylene Toluene Xylenes. Total Surr: 1,2-Dichlorobenzene-d4 Sur: Dibromofl uoromethane Surr: p-Bromofl uorobenzene Sur: Toluene-dg Sample Matrix Spike400 ug/L3800 ug/L190 ug/L210 ug/L21O ug/L220 ug/L 610 ug/L Sample Matrix Spike Duplicate3500 ug/L 190 ug/L 180 ug/L 190 ug/L 17O ug/L380 ug/L 3600 ug/L170 ug/L21O ugtl 190 ug/L210 ugtl 570 ug/L Run: 5975VOC1_08061 7A10 100 70 13020 95 70 13010 97 70 13010 106 70 13010 103 70 13010 109 70 13010 101 70 1301.0 102 80 12O1.0 100 70 1301.0 99 80 QO1.0 102 80 fto Run: S97SVOC1_OBO617A 83 TO10 94 70,0 91 7010 94 7010 85 7010 94 7020 90 7010 84 7010 104 7010 95 7010 103 7010 94 701.0 98 801.0 94 701.0 98 801.0 100 80 130 130 130 130 130 130 130 130 130 130 130 130 120 130 120 120 7.0 15 16 14 6.4 5.6 15 1.9 7.7 5.3 6.8 0.0 0.0 0.0 0.0 Batch: Rt02799 06/17108 19:15 06/17108 19:50 20 20 20 20 20 20 20 20 20 20 20 10 10 10 r0 Qualifiers: RL - Analyte reporting limit,ND - Not detected at the reporting limit. I HH I o -1 oc,)(E 0- o,T'(n o.ALo o cooooco.EEgoo.ooLo(, E'iI-ro!(r)oiui+r{oiOF-.=JEEr!oltr5 -^(E: 'H$ )ro; --(U8 -ltLO<frt6t-ELO(UE >Et5OEflLafr:r€oErhoo! trFt-h t o € .d =! A cCtlr bd f3 5 i.o €n! I zzz J*Y,B€o o NF-lgiss' Ecr.9 0,af c -!,=uxfig kEqE O ^- lDE*El i A5 [IE dEoEIE r:gEls I- lliliifiore-il;ilEil ftr( JA 5 rr1.(ot )/.tl-d A _r",0O ,{Es6eqE Xuorqa6onEpttosisiloSJelemJly E O I A S ll V:ed,t eduBs k .nI ', { (ca,6 r) =tqT.Y SuyrJ 5,Pd-E 6o:a- dl iitb E!E D =o 0 o-LI ==Lt-oos0-o L'otL!,o.=Icr(, G, I Lo'tro. !, EL'9>8goqiiJ E'< =6YEo#t5Eu O'lEe <!!Ec.EclEcL= &E oE-g oEP5eEy gEEH IF idi# i"lg rE/ I O-! lEgg trri5 JEE$ HI$iE 1ggE Jii E5IE;E ileEE ilsgE IEts E l;f$ li; I lEislir rlE !lo Lls BloE .t!!E> a f$ S E €, Energy Laboratories lnc l: lr l, IT T T t T t T T T Workorder Receipt Ghecklist Denison Mines (USA) Corp Login completed by: Kimberly Humiston Reviewedby: Kerrischroeder Reviewed Date: 6t16t200g 3:09:00 pM Shipping container/cooter in good condition? Custody seals intac{ on shipping container/cooler? Custody seals intact on sample botfles? Chain of custody present? Chain of custody signed when relinquished and received? Chain of custody agrees with sample labels? Samples in proper container/botfle? Sample containers intact? Sufficient sample volume for indicated test? All samples received within holding time? Container/Temp Blank temperature in compliance? Water - VOA vials have zero headspace? Water- pH acceptable upon receipt? ves fl Yes fl Yes I Yes fl Yes fl Yes fl Yes fl Yes fl Yes I Yes [l Yes [[ Yes [t Yes fl Not Present E NotPresent E Not Present B[ r ililtil{tililililfl tilf ilt f,il fl fl ilililtilil c08060706 Date and Time Received: 6l,l3t1o0g 9:40 AM Received by: ah Carrier name: Next Day Air NoD NoI Non Non NoD NoD NoE NoD NoM NoE No D 4"C On lce No fl NoVOAviats submitted tr No fl NotAppticabte n:::::::::::::::::::::::::::::::::::::::::::::::::::::::: Contact and Conec{ive Action comments: ----------:::--:::::::::::::::::::::::::::::::: Did not receive non oreseryed bottle for sample MW 23 so therefore,cannot anaryze carbonate, Bicarbonate,I3S,iJ:i#1","'fttf:lm'S*atift[B: ilw fi il[:#:,=. *,. i",.,iii"a; aiiin008 14:12:00 and I Ef FE!{,ffi?E{%',',2!{f;,i,1'Ef q!lg,::I'!'#ltgEflffi !-3[lw3;i3r1r,lff r;,,f,f:f :fi ffi 1;,:,Tolt Free 8d8.23i.osii ;'ibr. T T T T I T I T T I T T T I t I T I Oatc.: 17-Jul-08 Project: Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater Sample Delivery Group: CO806O7O6 CASE NARRATIVE THIS IS THE FINAL PAGE OF THE I.ABORATORY ANALYTICAL REPORT oRtcl NAL SAMPLE SUBMTTTAL(S) Arl originar sampre subrnittars havl-been returned with the data package. SAMPLE TEMPERATURE COMPLTANCE: 4"C (r2"C)Temperature of samoles received '"v ,ot o" coisioeieo properly preserued.by accepted standards. samples that areffiii$fi** immdoiatetv "rt"i *ir"'"iiJn!i"r u" "o*id",JJ"l#p'tJru ir th;;is ilJe;;;'iriri*" chirins process GROSS ALPHA ANALYSIS il"il[o,'ifffJ?;flHrXil,1?""*1:i:'.if5 fJl[[H',::#Hi:[r,r"ter method ror row rDS warers. Data provided RADON IN AIR ANALYSIS The desired exposure time.is 48 hours (2 days). The time delay in returning the canister to the laboratory for processing;Ulii:,ff:i*ff; ffi;3t;ii&'g:i;;iii'X" aecav' rraaxrri,, iJ"",;""ded derav oliiileilna or exposure ,o - SOIUSOLID SAMPLES All sampres reported on an as received basis unless othenrvise indicated. ATRAZINE, SIMAZINE AND PCB ANALYSIS USING EPA 505Data forAtrazine and Simazine "r" r,"port"O-frii., epe SZSi not from EpA50O. Data reported by ELt using EpA methodflXl$Tf$il,,',:H'ffit"[il3Jt1i#fif,l.f ', /#i#",Uilii?.I"n,i"*nli"riri'rnoiil.","oy, the sampre SUBCONTRACTING ANALYSIS subcontracting of samole analyses to an outside lab.oralor1.qay be required. lf so, ENERGy LABoRAToRIES will utilizel:fitrfo'f"Tit"#ffit'fiii;mil"Ioirto'ies foithiss;;i*l e"v such raborato,i"r;iii;; indicared w*hin the B.FANqH LABORATORY LOCATIONSeli-b - Energy Laboratories, tnc. - Aitiinls, Ufelig - Energy Laboratories, tnc. _ Cifi"ii", irw!li! -.en*gv Laboratories, tr". - i;i;;: iliel-r - Energy Laboratories, lnc. _ Rapid Citv. SDeli-t - Energy Laboratories, lnc. - Coriege Siiti-*, fx CERTFICATIONS: USEPA: WY00002; FL-DOHIELAG: E8764.t; Arizona: M0699; California: O211ACAoreson : vvy200o0 1 ; utan: 3o7i35OJ 1 5, v'dil;:'b0057; washin gron : c 1 e03 ISO 17025 DISCLAIMER: The resurts of this Analyricar Report rerate onry to the items submitted for anarysis. ENERGY LABoRAToRIES' INC' - CASPER,\ n/ certifies that certain method serections contained in this report meetrequirements as set forth by the abwe a"o"Jiiinirrttroriues. -Soi;;ffiilrequested by the crient may not be coveredunder these certifications. nrr anarvsii JJtii" il"""r-uTlrl"d itF;;liirv j"r"*"r;;i#;i; i'"-"tiin.o in the samprestate of origin' prease veriff eu's Lertincation ilr-"rg" by visiting www.energyrab.com 5:LTiJ::lff":iffiit#:#l to provide vou with this analvtical seMce. For additionat inforrnation and services visit our t €f Ftrf &#!,?E{?gfigilfi;,1'!,f *e,::::7;1jl?5fl#g!":u!#&;83,,?i,trf r.,,8::f :!,ff :;f,{, rut Free aaa.zes.diii :'tioz T t T T I T I T ANALYTICAL SUMMARY REPORT July 27,2008 Denison Minas (USA) Corp 6425 S Hwy 191 Blanding, UT 84811 Workorder No.: C08061004 Project Name: 2nd euarter Semi_Annual Groundwater Quote lD: C1il0 _ pOC Welts / Monthly Groundwater Sampling - Energv Laboratories, r*@@@ Sample lD Client Sample lD Collect Date Receive Date Matrlx T€tc08061004_ool MW5 [ 06/18/08 Og:sz oorzoroa Aqueous !l9ta!s oy tCp/tCpMS, DissotvedAlkalinity QA Calculations Chloride Fluoride Nitrogen, Ammonia Nitrogen, Nitrate + NitritepH Gross Alpha minus Rn222 and UraniumSolids, Total Dissolved Sulfate SllE260B VOCs, Standard Listc08061004-002 MW 11 * 06116108 14:38 06/20/08 Aqueous SamE As AboveIc08061004-003 MW 12 .- 06,ntng l3:3S 06/20/08 Aqueous SameAs AboveC08061 004-004 lvlt4, I 4 'l/ 06118t08 12:13 O6t2OlOB T T ! I T T T T T c08061004-oo5 MW 15 Aqueous Same As Abovevwvv,vw-uvo tvlw tb t 06/19/0g 14:40 A6l10ftg C08061ffi4-0OO MW2O - nr.latto in.^, ^^6^.^- Aqueous Same As Above - OAfi7BB 10:Zt 06t20t08 Aqueous SameAsAbove^qusous UamoAsAbove =go4-:01MW22 "o*- s.",eAsAb"*co8o61oo4-oo8Mw75 k*_ --. _:_evyv,vva_vve ,vrvv ,r' 1 06/19/09 09;52 0612010g -r Aqueous SameAsAbovec08061004-oo9 TripBt"," ;ffi , "nrty""*ot lf you have any questions regarding these tests results, please call, RePortApprovedBv: dr* "S il^I%- ,ftrFilf{'ttr&?Ef{?if,2ilfi,;ry'!;![g:;ilru-:#!,igLi*E ?i,lf#.,,f,fifii,fflitr, QA/QC Summary Report Clienh Denison Mines (USA) Corp Project 2nd euarter Semi-Annual Groundwater Report Date: Work Order: 07t27t08 c08061004 I T T t T t I T Analyte Result Units RL %REC Low Limit Htgh Ltmtt RPD RPDLlmit euatilethod: A2320 B Sample ID: MBLK-1 Alkalinity, Totat as CaCO3 Carbonete as CO3 Bicarbonate as HCO3 Sample lD: LCS-, Alkalinity, Totat as CaCO3 Sample lD: C0806100,|-003AMS Alkalinity, Totat as CaCO3 Sample lD: C0E06|OO4.{,03AMSO Alkalinity, Totel as CaCO3 Method Blank ND mg/L ND mg/L ND mg/L Laboratory Control Sample193 ms/L Sample Matrix Spike 436 mg/L Sample Matrix Spike Duplicate438 mg/L Run; MANTECH_080626A Ru n : IU!ANTECH_080626A 90 110 Run: MANTECH_080626A 80 120 Batch: R103335 06/26/08 09:490.2 1 1 1.0 1.0 1.0 96 95 06/26/08 09:56 06,126n8fi:U 0626/08 i0:f1 ,0 Run; MANTECH_080626A97 80 2o 0.5 T I I I I T t Uethod: A2S40 C SampletO: MBLK1_080823 Solids, Totat Dissotved TDS @ 1SO C Sample tD: LCS1_080623 Solids, Totat Dissolved TDS @ 1SO C Sample tD: G0806108.004AMS Solids, Toht Dissotued TDS @ r80 C Sample lD: C08061004-{!04AMSD Sollds, Totral Dissolved TDS @ 1g0 C Batch: 080623_1_SLDS-IDS-W Method Blank ND mg/L Laboratory Control Sample998 mg/L Sample Marix Spike 5580 mg/L Sample Matrix Spike Duplicate5460 mg/L Run: ML-1_0806238 Run: ML-1_0806238 90 110 Run: BAL-1_0806238 90 110 Run: BAL-1_0806238 06/23/08 15:16 06123t08 09:47 06t23108 09:47 06,121fi8 09:42 1090 100 98 98 t0 10 10 1t0 2.2Method: A4SO0-C| B SamptetD: MBLK9-0806268 Chloride Sample lD: COE06i004-0OSAMS Chloride Sample tD: C08O61O04.005AMSD Chloride Sample lD: LCS3E-0806268 Chloride Method Btank ND mg/L Sample Matrix Spike 109 mg/L Sample Matrix Spike Duplicate11O mg/L Laboratory Control Sample 3550 mg/L Run: T|TRAT|ON_080626D Run: TITRAT|ON-O8O626D 90 110 Run: TITRAT|ON_OBO626D 90 11O 0.6 Run: TITMTION_OBOO26D 90 110 Batch; 0806268-CL-TTR-W 06/26/08 I5:06 06/26/08 i6:02 06/26/08 16:04 10 06,126t08 1T:17100 0.4 1.0 1.0 1.0 T T I T Quallflers: RL . Anatyte repoding limit.ND - Not deteded at the reporting limit. EfFn!{'il?'?E{%li2i{fi;':'f,f%fffl#{!-1f!,%i,i;E pi,ffi:.,,f,fifii;ffi!,itr, Cllent: Project: QA/QC Summary Report Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater Report Date: Work Orden 07n7rc' c08061004 I T t I I t I T Analyle R6ult Units RL %REC Low Llmit High Llmit RPD RPDLImit QuaIlllethod: A4SoO-F C Sample lD: MBLK.I Fluoride Sample lD: LCS-I Fluoride Sample lD: CoSO6|OOHXXAMS Fluoride Sample lD: C08061004-00tAilSD Fluorido Method Blank ND mg/L Laboratory Control Sample,.00 mg/L Sample Matrix Spikei.8g mgA Sample Mahix Spike Duplicate1.89 mg/L Run: MANTECH_0BO6ZSA Run: MANTECH_0BO62SA 90 110 Run: MANTECH_08062SA 80 120 Run: MANTECH_OBOGZSA 1000.10 0.10 Batch: R1O3Z39 06125108 10:25 06125108 10:27 06125108 1a:11 06125108 14:14 10o.10 120 Method: Sample tD: pH A4500-H B lcvl_0806A_2 Analyticat Run: ORIONSS5A_0806238 lnitial Calibration Verification Standard6.90 s.u.O6123108 11:420.010 101 A45O.H B Sample lD; C0O06i02t-O0tADUp pH Sample Duplicate 7.30 s.u. Batch: Run: OR|ON555A_0806238 080623_2_PH-W_s55A-2 06,l23t0$ t2:070.010 t I T T I T I T 0.7 Method: Sample lD: Sulfate Sample lD: Sulfate Sample lD: Suffate Sample lD: Sulfate Sample lD: Sulfate Sample lO: Suffate 44500-so4 E LCS-1_ MBLK-1- c08001004-oo2Aus c0806t004{02AMSD c08061004{!08AMS c080810o4-urSAMSD Laboratory Control Sample 47AO mgA Method Blank ND mS/L Sample Matrix Spike z0E;O mg/L Sample Matrix Spike Duplicate2030 mg/L Sample Matrix Spike 21OO mg/L Sample Matrix Spike Duplicate2130 mg/L Run: TURB-2_090625A100 90 110 Run: TURB-2_080625A Run: TURB-2_0EO62SA104 90 110 Run: TURB-2_08062SA102 90 110 Run: TUR&,2_0BO62SA103 90 110 Run: TUR&,2_0BO6Z5A90 ,ro Batch: 080625_1_SO4-TURB-W 06/2sl08 09:59 06t25/0E 10:06 06/25108 16:01 06/2St08 i6:030.7 10 06/25108 16:39 06t2StOB 16:411.1 10 t T I Quallfierc: RL - Analyte reporfing limit.ND - Not deteded at the reporting limit. I - f"fF2!{'itr'1?Ef{%tr2'{8,;'I'Ef![gf;!#g!-rlwL;:;E E:;;,#-,,f,f:#affx1f:, t I QA/QC Summary Report Client Denison Mines (USA) Corp Project 2nd Quarter Semi-Annual Groundwater Report Daler: 07tZ7tO8 Work Order: C08061004 T Result Unlts RL %REC Low Limit Htgh Limit RPD RPDLimit eual I I T T T T T I T T T t T T t I T Method: E200.7 Sampl€ lD: M8.080708A Calcium Cobalt lron MagrEsium Manganese Potassium Sodium Tin Sample lD: LFB-080708A Calcium Cobalt lron Magnesium Manganese Potassium Sodium Tin Sample lD: C08061 004.0038tns2 Calcium Cobalt lron Magnesium Manganese Potassium Sodium ltn Method Blank ND ND 0.005 ND ND ND ND ND Run: |CP24_0B0ZO8A Batch: Rl03914 07/08/08 t3:45 07/08/08 t3:49 07l08lOA 19:57 07l08lOB 2O:01 20 20 20 20 20 20 20 20 Laboratory Fortified Blank 51.3 mg/L 1.03 mg/L 1.09 mg/L 52.5 mg/L 1.03 mg/L 45.7 mgL 47.2 mg/L 1.09 mg/L Sample Matdx Spike 778 mg/L 4.94 mg/L 5.15 mg/L 461 mg/L 4.91 mg/L254 mg/L 559 rng/L 5.42 mg/L 0.1 0.002 0.005 0.04 0.0003 0.02 0.8 0.01 0.50 1030.010 1030.030 1080.50 1050.010 1030.50 910.77 950.10 .109 1.0 1A10.010 990.030 1031.0 1010.010 981.0 963.9 1040.10 108 1.0 950.010 970.030 1001.0 980.010 96 1.0 943.9 99 0.10 106 Ruu |CP2-C*0B07OBA 85 12585 12585 12585 12585 1258s 12585 12585 125 Run: |CP2-C_0BO7OBA 70 t3o70 13070 13070 13070 13070 13070 13070 130 Run: ICP2-C_080708A 7A 13070 13070 13070 13070 13070 13070 130 70 130 mg/L mg/L mS/L mg/L mg/L nrg/L mS/L mS/L Sample tD: G08061004{o3BMSD2 Sampte Matrix Spike DupticateCalcium 7m mg/LCobalt 4.&4 mg/Llron S.O0 mg/LMagnesium 4il mg/LManganese 4.g4 mg/LPotassium 2q mg/LSodium ilZ mg/LTin 5.Zg rng/L 2.0 2.1 2.9 2.1 1.5 2.7 2.3 2.4 Qualifiers: RL -Analyte reporting limit.ND - Not detected at the reporting limit. T ;fFffi{,H?,?E{?y,F:ii{f;,;,1'f,iiig:;;lHfl!-:If,i%",i;3rhtrl,i?_,,,itrfii;ffi!#, T I QA/QC Summary Report Client Denison Mines (USA) Corp Projeck 2nd Quarter Semi-Annual Groundwater Report Da!e; !il2TtOB Work Order: C0BO61O04t T T t t I t I T I I T t Analyte RL %REC Lory Ltmlt Htgh Limlt Run: ICPMS2C_080717A Sample lD: LRB Arsenic Beryllium Cadmium Chromium Cobalt Copper Lead Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc Sample lD: LFB Arsenic Beryllium Cadmium Chromium Cobalt Copper Lead Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Anc Sample lD: C08060998{04AMS4 Arsenic Beryllium Cadmium Method Blank ND mg/L ND mg/L ND mg/L 7E-0S mg/L ND mg/L ND mg/L ND mg/L ND mgtL ND mgiL ND rng/L ND mg/L 4E-0S mgil ND nE/L 0.0002 mg/L ND mg/L ND mg/L ND mS/L Laboratory Fortified Blank 0.0520 mg/L 0.0507 mg/L 0.0515 rng/L 0.0517 mg/L 0.05tS mg/L 0.0517 mS/L 0.0515 mg/L 0.00546 mg/L 0.0544 mS/L 0.0515 rnS/L 0.0519 mg/L 0.020, mg/L 0.0514 mg/L 0.0536 mg/L 0.0509 mg/L 0.05i7 mg/L 0.0528 myl Post Digestion Spike 0.0487 mg/L0.0424 mg/L 0.0441 mS/L Result Un|t9 Method:E200.8 6E-05 3E-05 1E-05 4E.05 2E-05 7E-05 3E-05 8E-05 5E-05 0.0007 0.0002 3E-05 1E-05 6E-05 'tE-05 3E-05 0.0003 0.0010 104 0.0010 1010.00t0 1030.00i0 103 0.0010 104 0.0010 103 0.0010 103 0.0010 109 0.0010 109 0.0010 10s 0.0010 1(N 0.0010 100 0.0010 103 0.0010 1070.00030 1020.0010 1030.0010 106 0.0010 950.010 850.010 88 Run: |CPMS24_080717A E5 11585 115 85 115gs 11S85 115 85 11585 11s 85 115 BS 11585 115 85 11585 115 85 115 85 11585 11s 85 ,1S 85 115 Run; ICPMS2-C_OBOZ17A 70 130 70 130 70 130 Batch: Rl04438 07117108 11:2A 07117108 11i26 07l17tOB 16:47 T T I RL - Analyte reporting limit.ND - Not detected at the reporting timit. I Ef FEf {,;trf,?E{?E[i3,y,?,;f i:titrg,;#'!";;i[95;lwgg-:',!',i%i,i;8tri"tr!-,,,if i&Ef,[!,itr,Totl Free 888.23i.0i/i :'ibz I I QA/QC Summary Report Client: Denison Mines (USA) Corp Project 2nd Quarter Semi-Annual Groundwater Report Date: 07t27lOB Work Order: C08061004I T t I I T T T I T t T t T T I I Analyte Result Unlts RL %REC Low Ltmtt High Ltmtt RPD RPDLImit QuaI Sample lD: C0806099S.004AMSD4 post Digestion Spike DuplicateArsenic 0.OSOS mg/L O.OOI0Beryllium 0.0426 mg/L 0.0i0cadmium 0.0441 n€/L 0.oloChromium 0.046Z mg/L 0.050Cobalt 0.0460 mg/L 0.0i0Copper 0.0485 mglL 0.010Lead 0.0484 mg/L o.o5oMercury 0.00516 nE/L O.OO10Molybdenum 0.0604 mg/L 0.10Nickel O.O5r9 mg/L 0.050selenium 0.04g7 mg/L 0.0010Silver 0.0148 mgl 0.010Thallium 0.0491 mg/L 0.loTin 0.0476 mg/L O.iouranium 0.0586 mg/L o.0o03oVanadium O.&91 mg/L 0.10zinc 0.0446 mgL O.olo Qualifiers: Method: E200.a Sample lD: C0806099S-004AMS4 Chromium Cobalt Copper Lead Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc Post Digestion Spike0.&65 mg/L 0.0462 mg/L0.M68 mg/L 0.0482 mg/L 0.00512 mg/L 0.060s mg/L 0.0499 mg/L 0.0450 mg/L 0.0147 mg/L 0.0480 mg/L 0.0467 mg/L 0.0584 mg/L 0.0488 mg/L 0.0438 mg/L 0.050 910.010 900.010 860.050 960.0010 1020.10 1070.050 870.0010 890.010 740.10 960.10 93 0.00030 101 0.10 960.010 76 99 85 88 92 90 90 97 103 107 91 94 74 9E 95 102 97 78 Run: ICPMS2-C_ABO717A 70 1307A 13070 13070 13070 13070 1s070 13070 13070 13070 13o70 13070 1307A 13070 130 Run: ICPMS2€_080717A 70 13070 13070 13070 13070 13070 13070 13070 13070 1307A 13070 13070 13070 13070 13070 13070 13070 i3o 3.5 0.4 0.1 0.0 0.3 3.7 0.0 0,8 0.0 3,8 5.8 0.7 0.0 0.0 0.4 0.0 1.7 Batch: Rl04438 07117108 16.42 07117108 16:54 20 20 20 20 2a 20 20 20 20 20 20 20 20 20 20 20 20 RL - Analyte reporting limit.ND - Not detected at the reporting limit. --,5fF*f{,itrf'?Efl"El',zi{,?;'r'!,Filg:;;lffi.rlli%i,i;E Etrl?f:..pi#!,f,[,itr, QA/QC Summary Report Client Denison Mines (USA) Corp Project 2nd Quarter Semi-Annual Groundwater Report Date: 0TlZllOB Work Order: C08061004 I I T T I T T T Analyte Method: E3S0.l Sample lD: MBLK Nitrogen, Ammonia as N Sample lD: LFB Nitrogen, Ammonia as N Sample lD: C08061004{r0tC Nitrogen, Ammonia as N Sample lD: C08O61O04-O01C Nitrogen, Ammonia as N Result Unlts Method Blank ND mg/L Laboratory Fortified Btank 1.00 mg/L Sample Matrix Spike 1.55 mgl Sample Matrix Spike Duplicate1.il mg/L Run: SUB-8113716 Run: SUB-81 1371690 110 Run: SUB-8113716 90 110 Run: SUB-BIl37t6 Batch: B_R113716 07/09/06 ,0:Sl 07D9l0B 1e:52 07/09/08 t0;58 07/09/08 10:S9 10 RL %REC Low Limit High Limtt RPD RPDLtmit euat 0.02 0.10 0. r0 0.10 103 101 'tM 110 Method: Et*t.z Sarnple lD: MBLK Nikogen, Nitrate+Nitrite as N Sample lD: LFB Nitrog€n, Nitrate+Nitrite as N Sample lD: 808062389{{iBilS Nitrogen, Nitrate+Nitrite as N Sample lD: B08062389.{,trBt SD Nitrogen, Nitrate+Nitrite as N Method Blank 0.01 mg/t Laboratory Fortified Blank0.981 mg/L Sample Matrix Spike 0.953 mg/L Sample Makix Spike Duplicate0.946 mg/L Run: SUB-81i3447 Run: SUB-Bi13zt47 90 110 Run: SUB-8113447 90 110 Run: SUB-BIl3,t47 Eatch: B_Rl 13447 07/03/08 09:37 07/0308 09:38 07t03t09 12:ZT 07103t08 12:28 10 0.002 0.050 0.050 0.050 0.790 99 96 95 110 T I I T T I t Method: E900.1 Sample lD: MB€A{144 Gross Alpha minus Rn & U Sample lD: LCS€A{1,{4 Gross Alpha minus Rn & U Sample tD: C0806t004-0OtDMS cross Alpha minus Rn & U Sample tD: COgOGiOO4.oOlDtf,SO Gross Alpha minus Rn & U Method Blank 0,8 pCirL Laboratory Control SamplE 27.5qCVL Sample Matrix Spike 26.3pCi/L Sample Mabtx Spike Duplicate 24.BpoitL Run: G5000W_080705A Run: GS00OW_OBOTOSA 70 130 Run: G5000W_08070SA 70 130 Run: G500OW_O8O7O5A70 130 101 95 89 Batch: GA-0144 07t08108 17:52 07108108 17:52 07lOAl08 1T:52 OT|OS|OB 1TiS2 23.85.9 T T T T Qualifiers: RL - Anatyte reporting limit.ND - Not detodect at the reporting limit t - -ENEEGY LABOilATOBIES, ffilC. . 2393 Satt CreekriiiF,iiaaiis.-diii 7'rtzvss tsrs-: F;7b7r;;.i!#.I!!"igiL;i?;ff;i#,,,,f,firi!rf,[.rf,ff, T T QA/QC Summary Report Client: Denison Mines (USA) Corp Project 2nd Quarter Semi-Annual Groundwater Report Daral. 07t2tt0| Work Order: C0B061OO4I T t t T T t T T I I I t t T t Analyte Result Units RL %REC Low Limit High Ltmlt RPD RPDLimit eualItiethod: SW8260B Sample lD: 23rtun-{lB_LCS_3 Benzene Carbon tetrachloride Chloroform Chloromethane m+pXylenes Methyl ethyl ketone Methylene chlodde Naphthalene o-Xylene Toluene Xylenes, Total Surr: .l,2-Dichlorobonzoned4 Surr: Dibromofluoromethane Surr: pBmmofi uorobenzene Sun: Toluenadg Sample lD: 23JUN-08_MBLK_6 Benzene Carbon tetrachlorlJe Chloroform Chloromethane 61+pXylenes Mehyl othyl ketone Mehylene chloride Naphthalene o-Xylene Toluenc Xylenes, Total Surr: 1,2-Dichloroberzened4 Surr: Dibromofluoromethane Surr: p-Bromofl uorobenzene Surl: Toluene-d8 Sample tD: C0806OgSZ-0tOFL|S Benzene Carbon tet,achloride Chloroform 6+p-Xylenes o-Xylene To,uen6 Xylenes, Total Qualifierc: RL - Anatyte reporting limit. S - Spike recovery outside of advisory limits. Laboratory Control Sample1l ug/L 11 ug/L 10 ug/L 9.5 ugA 21 ug/L 84 uglL 9.4 ug/L 7.4 ug/L 11 ug/L lt ug/L 32 ug/L MEthod Blank ND ND ND ND NO ND ND ND ND ND ND ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L uga uga ug/L Sample Mafix Spike220 ug/L270 ug/L260 ug/L210 ug/L210 uS/L210 ug/L420 ug/L Run: GCMS2_080623A 70 1307A 13070 13070 13070 13070 13070 13070 13070 13070 13070 13080 12070 13080 13080 120 Run: GCMS2_080623A 1.0 1 101.0 1141.0 1U1.0 9s1.0 10520 841.0 941.0 741.0 1051.0 1081.0 1051.0 971.0 9i1.0 991.0 101 0.5 0.5 0.5 0.5 0.5 0.5 0,5 0.5 0.5 0.5 0.5 111 109 104 97 10 10810 1U10 13010 10310 107,0 10310 105 80 12070 13080 12080 120 Run: GCMS2_O6O62SA 70 13070 13070 13070 13070 13070 13070 130 Batch: Rt03i13 06/23/08 10:23 06D3lO8 12:'t9 06124lO8 O5:5a ND - Not det€ded at the reporting limit. t ENEflGY LABOZAT0R1ES:!!I9: .._239J Sa/t Creek fllglway (s?60t) . p.O. Box sZiS . Caspea W 026aeTo// Free 088.235.051s . 11rfui.osts-- -Fi eb7Z,ii. t639 , casper@energytab.com , wwuenergytab.com I I Client: ProJect: QA/QC Summary Report Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater Report Data; 07l2ll0} Work Order: C08061004t I T I t I t I T I T T T Analyte ilethod: SW8260B Sample lD: C08060957{l0FilS Surr: 1,2-Dichlorobenzened4 Eurr: Dibromofl uoromethane Sur: p-Bomofl uorobenzene Surr: Toluene-d8 - Spike recovery is high br several analytes. Sample lD: C08060957.t rOFt SD Benzene Carbon tetrachlorirle Chloroform m+pXylenes o'Xylene Toluene Xylenes, Total Surr 1,2-Dichlorobemene{4 Sufl: Dibromofl uoromethane Surr p-Bromofl uorobenzene Surr: Toluene-d8 - Sfike recovery iE high lbr several anatytes. Result Unite Sample Mahix Spike RL %REC LowLlmlt RPD RPDLimtt euat Run: GGMS2_080623A Batch: R103it3 0624/08 0S:S4 1.0 96 E0 120 This is a maltix relalsd bias slnce the MS MsD pah both efiibit this same behavtoryet have an accep6bte RpD. Sample Matrix Spike Duplicate230 ug/L280 ugtL 260 ug/L21O ug/L220 ug/L210 ug/L440 ug/L Run: GCMS2_080623A t30 0.0 't0 1.0 111 EO1.0 125 701.0 112 80 10 114 7010 13E 7010 129 70'r0 107 7010 112 7010 105 ?o10 109 701.0 112 801.0 117 701.0 112 80 120 130 120 06/2#08 06:33130 5.4 20130 2.9 20 s130 0.3 20130 3.8 20130 4.4 20130 2.3 20130 4.1 20120 0.0 10 12O 0.0 101.0 96 80 120 o.o 10This i3 a marix related bias since the MS MSo pah both exhibit this same bchavicr y6t have an aceptabte RpD. I t T Qualiflerc: RL - Analyts reporting iimit. S - Spike recovery outsido of advisory limits. ND . Not detected at th6 reporilng llmit. lEtd,IEI=lrtIElol'aI>lctlcl(dIoIElol6lo-lEaI or!I o X.El.e+;laYEI E(E -I b.E PI cltl'-60lpE;I 5 \=I Eg.EI I -!t€b3 I EgEI EX-9I h E€ I ;iEI E3EI oo6| -oEIE_-I @E clitoI E.sEt=(UE I E f;E rEerloo>^=(U<EE 6E !i a=dF 5l'=.o (Jl € a€lb eH€.e ElJE CI>; ql9() il(I)oal,Eg 3lEPtie#.E t? -o EBgdo=se2E-F.!aE>6o !;(l,ocgoE .e(,c'6 Eoos tr oz u o(l) Eo9E ssEsO.si6= E e.E E 3e# s, -*E- (U r A",, E S.gE E#$fr E63rti6otr€ H c )'1 \{0${ e\\ 't-tslNtJ t'INNx{o}LlL -f -e hh{{ o--E\ 3-<os UVI) punorcurnl putoN rc qp-,{esseorfr' uouepoel'spllogTqpgrele-lV " OgASl4y:adllajdrles$oulquoS lo JoqunN tsla- 60lalm r-t3 I$ \.nlr$.9\I --dls { lO-JV\t-il fit,!,1l(dt Elolo-lO'IEI gr 6lEI9lEItxlxl>Ef;-rO<= Er.x< t-,a"EEgDtr DN IE'lo Iqii,llF lsElsElhc)l- -clJ*I'rr br_oro6.ECF =oo=lJ- OEoo?i sE-*o Ee HpcoA J I oJ Ioo)(s(L !,L.o(,oE t,ao =ctoE -(goa- - Etr t,tr(E t,o+Jo =or:ro tr (E .C C) I I T T I T T I T T T t I T I T Energy Laboratories lnc t t T T I t t T T I I T I t T t T T T Workorder Receipt Ghecklist Denison Mines (USA) Corp Login completed by: Kimberly Humiston Reviewed by: Reviewed Date: Shipping container/cooler in good condition? Custody seals intact on shipping eantainer/cooler? Custody seals intac{ on sample botues? Chain of custody present? Chain of qrstody signecl when relinguished ancl receive<l? Ghain of custody agrees with sample labels? Samples in proper containerlbotile? Sample containers intact? Sufficient sample votume for indicated test? All samptes received within holding time? Container/Temp Blenk temperature in compliance? Water - VOA vials have zero headspace? Water - pH accoptable upon receipt? Yes EJ Yes ffi Yes I Yes [t Yes fl Yes [l Yes [l Yes [l Yes [l Yes fl Yes Bl Yes [[ Yes B[ NotPresent f] NotPrcsent I NotPresent fl 4'C On tce No VOA vials submittcd tr NotApplicabte tr lffi I[ff tlrilfl f t[Ililtiltlilf,r c08061004 Date and Time Received: 6t201200g9:30 AM Received by: l(VV Canier name: Next DayAir NoD NoD NOD NoE No fI NoE No fI NoD NoI NoD NO fJ NOD Non I ENEBOY LABORATOR1EE tNC, . 2393 salt creek HlqQway (a260!l . po. Box JZ58 . caspet, w82602rotl Free 88o,zr5.0sts . s,z.2ai.ons ; -ii ibi.iii. iiiis":diiidrii;cya:;** . www.enersytab.com I Date:. 27.lul-08 t I t I t I T I T t T T I T I CLIENT: Project: Denison Mines (USA) Corp 2nd Quarter Semi-Annual Groundwater Sample Delivery Group: C0B061O&t CASE NARRATIVE THIS IS THE FINAL PAGE OF THE LABOMTORY ANALYTICAL REPORT oRrctNAL 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 proogrly preserved by accepted standards. samples that are[::13;lf"' immediatelv after cnllection shall be considereo i66u"ur" ir tnlre iievio-ence inaiirre crriilins p,ocesJ GROSS ALPHA ANALYSIS Method 900'0 for gross alpha and gross beta is intended as- a drinking water method for low TDS waters. Data providedby this method for non potable wat6rs should be viewed as inconsiste"ni. -" RADON IN AIR ANALYSIS The desired exposure time.is.48 hours.(2 davs). {9rime delay in returning the canister to the laboratory for processingshould be as short as possible to avoid exceisive decay. Maxirium recomrienoeo delay between end of exposure tobeginning ofcounting should not exceed g days. SOIUSOLID SAMPLES All samples reported on an as received basis unress orhenrvise indicated. ATRAZINE, SIMAZINE AND PCB ANALYSIS USING EPA 505Data for Atrazine and simazine are reported from gpe 5252, nolfrom EpA.50s. Data reported by ELI using EpA method505 reflects the results for seven individual Aroclors. wnen tlre risun" riiilr seven are ND (not dltected), the samplemeets EPA compliance criteria for pCB monitoring. SUBCONTRACTING ANALYSIS subcontracting of sample analyses to an outside llbgraloq.may be.required. lf so, ENERGy LABoRAToRIES will utilizeits branch laboratories or qualified contract laboratories toirni" iewitel liv suctr laboratories will be indicated within rheLaboratory Analytical Report. BRANCH I.ABOMTORY LOCATIONSeli-b - Energy Laboratories, lnc. - Billings, MTeli-g - Energy Laboratories, tnc, - Gittefr'e, $fyeli-h - Energy Laboratories, lnc. - Helena, MTeli-r - Energy Laboratories, lnc. - Rapid CitV, SOeli-t - Energy Laboratories, lnc. - Coilege Siation, fX CERTFICATIONS: UsEPA: t/VY00002; FL-DOH]!!rac: E17641:Arizona: 420699; carifornia: o2118cAOregon: VS/200001; Urah: 3O723S0S1S; Virginia, OOOSZ; Wasnii!1s1. |j!fi ISO 17025 DISCISIMER: The results of this Anaryticar Report relate onry to the items submitted for anarysis. ENERGY l-ABoRAToRlEs, fNc' - CASPER,WY certifies that certain method setections contained in this report meetrequirements as set forth by the above "ccreoiiing irthorities. S;; ;;;l'ilguested by the ctient may not be coveredunder these certirications..Ail analvsis aata io 6eiuu;itree;;r;eg;[iJ.y l,rrur*il;aJi"il; o"-.i,im"o in rhe samptestate of origin. Prease verifl EU's teilification coverage by visiting wv*v.energyrab.com ELI appreciates the opportunity to provide you with this analytical service. For additional information and services visit ourweb page rrrnlrnrv. energylab.com. I I t I I T T Client: Denison Mines Project ID: 2nd Quarter Ground W Lab Sample ID: L84415-0lA Field Sample ID: MW-l Collected: 6/412008 9:08:00 AM Received: 6/612008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 6/9 /2008 I 0:39:00 AM ater / ,t/AMERICAN WEST ANALYTICAL LABORATORIES VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake Ciry, UT Units: pgll. Dilution Factor = I Compound Reporting Limit Analytical ResultI t 84t l5 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 2.6 100 105 98.2 104t t I I T t T T T T I (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 ernail: awal@awallabs.com 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. n*."r"n,.r*,).T"1:r::::;,::::::::rr::::::::: I T t I t AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 2nd Quarter Ground Water Lab Sample ID: L84415-02A Field Sample ID: MW-2 Collected: 6/412008 3:16:00 pM Received: 61612008 Analysis 82608/5030B Analytical Results Contact: Steve Laudau Analyzed: 6/9/2008 il:04:00 AM VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll- Dilution Factor : Compound Reporting Limit Analytical ResultI841 l5 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 I T TOII 2.0 8l-143 8s-1 l5 80-124 88-120 <2.0 98.6 101 99.4 103 (80 t) 263_8686 Free (888) 263-8686 Fax (80 l)263-8687 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. T t I T T I I t I ,coc. rlris rcpor is pro")"T"1,?3,liilii:::,,,:::: :::::ofsubscqucnr usc ofihc name ofrl I I t I t T AMEzuCAN WEST ANALYTICAL LABORATORIES Analysis Contact: Steve Laudau Analyzed: 513112008 4:59:00 pM 82608/s030B Analytical Results VOLATILES bv GC/MS 82608 ORGANIC ANALYSIS REPORT Client: Denison Mines Project ID: Semi-Annual Groundwater Lab Sample ID: L84302-0lA Field Sample ID: MW-3 Collected: 5/28/2008 8:30:00 AM Received: 5/30/2008 I 463 West 3600 South Salt Lake City, UT 841ts Units: pgll. Dilution Factor: Compound Reporting Limit Analytical Result T Tetrahydrofrran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe nzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-143 85-1 15 80-t24 88-120 <2.0 tt7 104 108 99.2 T I rorr (801) 263-8686 Free (888) 263-8686 Fax (80 1)263-8687 awal@awalJabs.corn The pH of the sample was >2. Analysis was performed within the 7 day holding time. t t I I I t t T t t Kyle F. Gross Laboratory Director Jose Rocha QA Officer ReportDate: 6/2/2008 Page2ofg t t t I t Client: Denison Mines Project ID: Semi-Annual Groundwater Lab Sample ID: L84302-02A Field Sample ID: MW-3A Collected: 5/28/2008 9:35:00 AM Received: 5/30/2008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 5l3llZO0B 5:24:00 pM AMERICAN WEST ANALYTICAL LABORATOzuES VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: prgll, Dilution Factor: I Compound Reporting Limit Analytical ResultI I 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 tt7 101 108 99.1t I I t T t t T t (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 emai[: 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. TI T t I I t Client: Denison Mines Project ID: 2nd euarter Ground W Lab Sample ID: L84663-01A Field Sample ID: MW-5 Collected: 6l|8/2OOB 9:52:00 AM Received: 6120/2008 Analysis 82608/s030B Analytical Results Contact: Steve Laudau Analyzed: 6/24/2008 5:15:00 AM ater / /AMERICAN WEST ANALYTICAL LABORATORIES VOLATILES bv GC/MS 82608 t 463 West 3600 South Salt Lake City, UT Units: pgil Dilution Factor: I Compound Reporting Limit Anagical Result T I Tetrahydrofiran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-143 85-1 15 80-124 88-120 10 94.1 105 96.4 102I T I T I I t T T T t (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email : aw al@awal-labs.com Kyle F. Gross Laboratory Director The pH of the sample was >2. Analysis was performedwithin the 7 day hording time Jose Rocha QA Officer *ll*lrxyr:"*'x,*:jy:.1-rlf tIllR€RA re pafomed in aeordece to NELAC prctocors. pe.tilat ReportDate: 6/30/2009 page2ofgaddree priv,egsorsubsmuotueorth;;;;;;,#;"1'.o;;;ff;HH":,iJ":Hi,H"llllrlT,"Tf;iiffii.i;iffifl-tiiflf,f*HfT:m;m;:f:l*f#f",::lmi:::"**[:. with the rqpublication of this lrun for ran.t a..^rdina r^ rf,- -.,_ ^...^.*,- --Ty.pr{pose othq dra forthe addrre win be gmt"a _ii"" "-"-ii"". rr,i."::I-"-., _"-*" -^ #ffffs;Hi[1T"::]1iinffil,H[LiffF"i*1",i:r,,;:t::tlxs#Y,rli,*E:ffi#iii,]'#,'ffidffi#rx[[#JHxffLn*r:#ifti{iil,t!i,,1:'["#$::i"TfH:ild ac@rdhg to the rule of the-tnde ad of scimce ..-:" .-_._ r-v"rq,vu vr uur rrprr rur ily ruposeild ac@rdhg to the rule of the trade ad of sciqce.rcceps tro rsposibiliry *csr for-the due pofo;_." "frlip.iiii #ailHy.t1:Tffi?1" I I T t t AMERICAN WEST ANALYTICAL LABORATORIES Lab Sample ID: L84663-02A Field Sample ID: MW-ll Collected: 6/1612008 2:38:00 pM Received: 6|20|2008 Analysis 82608/5030B Analytical Results Denison Mines ID: 2nd Quarter Ground Water Contact: Steve Laudau Analyzed: 6124/2008 5:40:00 AM VOLATILES bv GC/MS 82608 t 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor: Compound Reporting Limit Analytical ResultI I Tetrahydrofrran Surr: 1,2-Dictrloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-1 l5 80-124 88-120 <2.0 93.6 101 96.4 102I I T I T I I I 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- Analysis was performed within the 7 day holding time. t t I t I I t AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 2nd euarter Ground Water Lab Sample ID: L84663-03A Field Sanrple ID: MW-12 Collected: 6/ 17 /2008 I :35:00 pM Received: 6/2012008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 6124/2008 6:05:00 AM VOLATILES bv GC/UIS 82608 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor: 1 Compound Reporting Limit Analytical ResultITetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-1 15 80-124 88-120 3.0 93.8 106 96.7 101 I I I t I t I I t t T T (801) 263_8686 Toll Free (888) 263-86S6 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer wthtreepubric'Joofiffiil?,*ff1ffi:""j,ff;'#i#il'#*Tl,:,*:xn:i,yrj:""1$*m:#:r_incomstio,withtbe"a,*r*Ji. T I t t I AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 2nd Quarter Ground Water Lab Sample ID: L84663-04A Field Sample ID: MW-14 Collected: 6l18/2008 t2:I3:00 pM Received: 6/20/2008 Analysis Requested: 8260Bi50308 Analytical Results Contact: Steve Laudau Analyzed: 6/24|2008 6:31:00 AM VOLATILES bv GCiMS 82608 t 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor: I Compound Reporting Limit Analytical Resultt I 84115 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-l 15 80-124 88-120 <2.0 94.2 106 97.9 102I I I t T I I I I I I (B0t) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer All aallsc ReportDate: 6/30/2009 page5 of9ftffirffi1,[*i1:1il"-1H,i.'#-f,:Tj.t""itj,T.f,?#S#,ltr*eT"*y?!.,fr[?j*:T.{fi"H'"I,f,-"jffiff;1fffj:f""*:#trlT.ffiimmffiiJd:ff#_!1i,""_r":* witb the Fpublication of this iepon for my purpore othq tba ior itre aaio"* *,,, * .--,- ^ subsequqt Be orthe nme orthis co-.my o;;y;;b*;ii;;jft,;rT#H#'.-rffrHlllt'"jfi1" islocated oo the attached coc. rhis rport is prvid€d ror the exctusive ue of theIt}:Jryltu.*r-*poreothqtbaiorihead&*;;i;il;;;;i;;:,"" rhiqrnn^--.^^-*-^_^--_,_:j91{'*at.prcmotionorsaieorayproductorpru;;.;;;;;;;;"X,."'*fr#T",ffl*,9$"Jtr#"ifi,HH=;d"*',f?f,i'#li*HfiiHLTJ,Yf'Iii,::lif;n"x-l::A*l,xll*"*i.i.;,*iH',:',,#i;ii"#:#:#iSf*#fliilT:"-,tX",}* I I T t T AMEzuCAN WEST ANALYTICAL LABORATORIES Contact: Steve Laudau Analyzed: 6/2412008 6:56:00 AM Client: Denison Mines Project ID: 2nd Quarter Ground Water Lab Sample ID: L84663-05A Field Sample ID: MW-15 Collected: 6l18/2008 2:40:00 pM Received: 6/2012008 Analysis Requested: 8260B/50308 Analytical Results VOLATILES bv GCTMS 82608 I 463 West 3600 South Salt Lake Ciry, UT Units: pgil Dilution Factor : I Compound Reporting Limit Analytical ResultI I Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-l 15 80-124 88-120 <2.0 94.5 103 97.9 103I I I I T I I T T t T (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 email: awal@awalJabs.com Kyle F. Gross Laboratory Director TIte pH of the sample was >2. Analysis was pedormedwithin the 7 day holding time. Jose Rocha QA Officer All ilalysB ReportDate: 6/3012008 page6ofgAll ildyss applicable to the CWA. SDWA, md RCRA e psfomed in rccord "aa*"it niiil"g*"ir"t"ti,*i,iJ"r,n"ameorthiscomnan.","".,*-ffj?.y.#!-p,91*gt"I*qT, with the re-publicitionofrtris ieport ior ayiliffifllx",:,J:,1*X""j,l:;;iT*rhyja;"il"u:,ffii.',?,jtri,11;iT$ill"'ffillHTjffiil"f;lffl**,*#1"*lT;*::"*,::;:rylt$lrt"*"ru,,u"*.Jrti," I I I I I AMERICAN WEST ANALYTICAL LABORATOzuES ORGANIC ANALYSIS REPORT Client: Denison Mines Project ID: Semi-Annual Groundwater Lab Sample ID: L84302-04A Field Sample ID: MW-17 Collected: 512812008 2:40:00 pM Received: 5130/2008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 5l3ll200B 6:15:00 pM VOLATILES bv GC/UIS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll. Dilution Factor: Compound Reporting Limit Analytical ResultI t 841 l5 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8r-143 85-1 l5 80-124 88-120 <2.0 116 104 108 99.3t I T I t I T I 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 ReportDate: 612/2008 Page5 of9 md of sciencc T T I T t ORGANIC ANALYSIS REPORT AMERICAN WEST ANALYTICAL LABORATOzuES Analysis Client: Denison Mines Project ID: 2nd Quarter Ground Water Lab Sample ID: L84415-034 Field Sample ID: MW-18 Collected: 61412008 11:45:00 AM Received: 61612008 Contact: Steve Laudau Analyzed: 61912008 l:10:00 pM 82608/50308 Analytical Results VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT 841 15 Units: pgll. Dilution Factor: I Compound Reporting Limit Analytical Result T t Tetrahydroflran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-143 85-1 15 80-t24 88-120 <2.0 99.4 101 98.6 101 263-8686 I T I t t t T t I I I Toll Free (888) 263-8686 Fax (801)263-8687 ernail: awal@awallabs.corn Kyle F. Gross Laboratory Director The pH of the sample was >2. Analysis was performed within the 7 day holding time. Jose Rocha QA Officer Report Date: 6/10/2009 page4 of 12 I I I I I AMERICAN WEST ANALYTICAL LABORATORIES Contact: Steve Laudau Anallzed: 6/9/2005 l :35:00 pM Client: Denison Mines Project ID: 2nd Quarter Ground Water Lab Sample ID: L84415-044 Field Sample ID: MW-19 Collected: 6/4/2008 l:55:00 pM Received: 616/2008 Analysis Requested: 82608/50308 Analytical Results VOLATILES bv GCiMS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor: Compound Reporting Limit Analytical ResultI I 841rs Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-1 15 80-124 88-120 <2.0 97.6 103 99.8 101I T I I I I I t I I (801) 263_8686 Toll Free (888) 263-8686 Fax (80 l)263-8687 ernail: 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. d,c.oc. rh s rcpor is p."::,:r::::".:::::ff ,r.:::: :::"':"ofsubsL'qucnt use ofthc nrmc oIrI T t I I AMERICAN WEST ANALYTICAL LABORATORIES Contact: Steve Laudau Analyzed: 6/24/200g 7:21:00 ANI Client: Denison Mines Project ID: 2nd euarter Ground Water Lab Sample ID: L84663-06A Field Sample ID: MW-20 Collected: 6/17/2OOB I0:27:00 AM Received: 6120/2008 Analysis Requested: g260B/50308 Analytical ResultsI T T T VOLATILES bv GC/]VIS 82608 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor = I Compound Reporting Limit Analytical Result841 15 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-t 15 80-124 88-120 <2.0 94.5 105 96.6 101t t T I T I T T T 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 All adyssal aalys* aPpli*ble to the cwA' sDwA' ild RCRA @ p*fomed iu reordace^to NELAC protocors. pmin@r smprirg i,fomation is roared on fte ech, Report Date: 6/30/2008 page 7ffinHiiH?::Lfff*:,X",1*ffi;j"*-if#i:^{:Tfotitsstaf.orreproductionorthisreonucomttiotwirhrhe.d,,#"*-] l-cji-,,rrisrpon5o*,*..-,i*",,sive wortherfiffi;d,ft:#*;*;fl#ir"rus;tH,,:*:*"[:;ffiti fffi,"Tx[[#flUffii*"?"",rffff[*r#H*.ii"*din*jri" Page 7 of9 xf,*:f;#i1"*:"fl*yiffiffiJ,g';d;mffirr#Js#r,iilffiLTi,?frtjt"J,:i{}j"ffi#rm*xil*#Utffi.h"ft$i#ftdftSi}.m#ru,Ttif."** T I t I I AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 2nd Quarter Ground Water Lab Sample ID: L84663-07A Field Sample ID: MW-22 Collected: 6/17/2008 9:37:00 AM Received: 6120/2008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 6/24/2009 7:46:00 ANt VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll. Dilution Factor: I Compound Reporting Limit Analytical ResultI I 841 1s Tetrahydrofi.ran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-143 85-1 15 80-124 88-120 <2.0 93.7 101 95.6 102I T t I T T 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. Analysis was performed within the 7 day holding time. = t I t t I AMEzuCAN WEST ANALYTICAL LABORATORIES Contact: Steve Laudau Analyzed: 6/171200g 12:57:00 pM Client: Denison Mines Project ID: 2nd euarter Ground Water Lab Sample ID: L84530-01A Field Sample ID: MW-23 Collected: 6/9/2008 3:20:00 pM Received: 6/l3l2OOB Analysis Requested: g2608/50308 Analytical Results VOLATILES by GC/MS 82608 t 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor : I Compound Reporting Limit Analytical ResultI I 84t l5 Tetrahydrofuran Surr: 1,2-Dichloroethane_d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-l 15 80-124 88-120 <2.0 92.3 105 93.9 103I I I I t t I I t T t (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 ernail: awal(Qawal-labs.com Kyle F. Gross Laboratory Director The pH of the sample was >2. Anarysis was performed withirt the 7 day holding time. Jose Rocha QA Officer ReportDate: 6/lg1200g page2of3 *J:fl':::T:ri?l;fi '::::::::,':::::J-:ofsubscqu.'nt use of rhc nrmc oI this eomprny or uny mtmbcr ofits slatF. or rcnroduct T I t I I AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: Semi-Annual Groundwater Lab Sample ID: L84302-05A Field Sample ID: MW-24 Collected: 5/2B12OOB 7:15:00 AM Received: 5130/2008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 5l3t/ZOO8 6:40:00 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 Tetrahydrofi.nan Surr: 1,2-Dichloroethane_d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-1 15 80-t24 88-120 <2.0 116 105 107 99.3I I I t I I T I T I I (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 Allanalvsesrpplicablctorhc(wA.sDwA,andRCRAaruocrtbmedinarr^r/""".,,NrEr ttDate:6D/2008 Page6ofg T I I T I AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 2nd euarter Ground Water Lab Sample ID: L84530_02A Field Sample ID: MW-2S Collected: 6/12/2OOg g:55:00 AM Received: 6/l3l2}Og Analysis Requested: g2608/50308 Analytical Results Contact: Steve Laudau Analyzed: 6lt7/2}Og l:22:00 pM VOLATILES bv GC/MS 82608I463 West 3600 Sourh Salt Lake City, UT Units: pgll, Dilution Factor: Compound Reporting Limit Analytical Resultt t 841t5 Tetrahydrofuran Surr: 1,2-Dichloroethane_d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-dg 2.0 8l-143 85-l l5 80-124 88-120 <2.0 90.8 106 94.2 10rI I T t I I I I T T (801) 263_8686 Toll Free (888) 263-8686 Fax (80 t)263-8687 email: awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer The pH of the sample was >2. Analysis was performed within the , *, Orrffi. ofsubsrr.;uent usc ofrhe name oftl T I I t I AMERICAN WEST ANALYTICAL LABORATOzuES Client: Denison Mines Project ID: Semi-Annual Groundwater Lab Sample ID: L84302-06A Field Sample ID: MW-26 Collected: 5 /28/2OOB 2:20:00 pM Received: 5/301ZOOB Analysis Requested: 92608/50308 Analytical Results Contact: Steve Laudau Analyzed: 5l3tl2}O8 7:05:00 pM VOLATILES bv GC/]VIS 82608 T I 463 West 3600 South Salt Lake City, UT Units: pgll. Dilution Factor: I Compound Reporting Limit Analytical Result I Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe nzerre Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8t-t43 85-l t5 80-124 88-120 <2.0 tt7 103 111 98.8I T I I T T T t I t I (80 I ) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 ernai[: awal@awal-labs.conr Kyle F. Gross Laboratory Director Jose Rocha QA Officer I u","0-,,,,-,,a"uRff :"::::":l'r:::r...:.::::::ofsubscqucnt use ofthc nxmL, ofthis comnrouy pr.pu*" u,r,". ir,,in i* ii " "jji"r*,"" irll'"y "r ilnv mcmbcr ofils sritf' ur rooloducli(nr ol this ;L'p"" ^.",;:;;i;,;;iiil';;ili,il: ptrlomrDcc ofinspL'crion an(tor inflr:/srj in g"",r rriii, ,"i *"rii"g ,"',i" *1'"i'.,irii.",*o_ rnr, ofscicnrt T I T T I AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 2nd euarter Ground Water Lab Sample ID: L84415-054 Field Sample ID: MW-27 Collected: 6/212008 3:50:00 pM Received: 6/6/2008 Analysis Requested: 92608/50308 Analytical Results Contact: Steve Laudau Analyzed: 6/9/200g 2:00:00 pM VOLATILES bv GC/MS 82608 t 463 West 3600 South Salt Lake City, UT Units: pgll- Dilution Factor : I Compound Reporting Limit Analytical Resultt t Tetrahydrofuran Surr: 1,2-Diclrloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-1 15 80-t24 88-120 <2.0 97.s 104 101 101 T t T I t t I t T (80 I ) 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 TI I I I I I AMERICAN WEST ANALYTICAL LABORATORIES Contact: Steve Laudau Analyzed: 6/9/2008 2:25:00 pM Client: Denison Mines Project ID: 2nd Quarter Ground Water Lab Sample ID: L84415-06A Field Sample ID: MW-28 Collected: 6/3/2008 8:40:00 AM Received: 6/612008 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 ResultI I Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-l l5 80-124 88-120 <2.0 100 103 99.7 103I I I I T I T I T I I (801) 263_8686 Toll Free (888) 263-8686 Fax (80 I )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. n,","0"n,.,.,)3"1,?li,,ll111l?1"..,::.::1.::"::"ufsubscqucntuscofthcnrmcoIthiscomnrnyuranl mcmbirofirssrulr.orrcpioJucnrnorrnlsrcponinconncclionwirhrhcilr T I t I I AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 2nd euarter Ground Water Lab Sample ID: L844lS-07A Field Sample ID: MW-29 Collected: 6/3 12008 10:50:00 AM Received: 6/6/2008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 6/9/2008 2:50:00 pM VOLATILES bv GC/]VIS 82608 I 463 West 3600 South Salt Lake Cify, UT Units: pgll. Dilution Factor: I Compound Reporting Limit Analytical ResultI I Tetrahydrof,ran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-143 85-1 ls 80-124 88-120 <2.0 99.2 102 98.8 101t t t T I I I I T T T (80 I ) 263-8686 Toll Free (888) 263-8686 Fax (801)263-8687 ernail : awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer The pH of the sample was >2. Anarysis was pedormed within the 7 day hording time. ! n,","n_.*,.").T.1,?1l..liiliilll..,,.":.,::.:::: I I I I I AMERICAN WEST ANALYTICAL LABORATOzuES Contact: Steve Laudau Analyzed: 6/9/2008 3:15:00 pM ORGANIC ANALYSIS REPORT Client: Denison Mines Project ID: 2nd euarter Ground Water Lab Sample ID: L84415-08A Field Sample ID: MW-30 Collected: 6/312008 I:l0:00 pM Received: 61612008 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 ResultI T 841ls Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe nzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-1 l5 80-t24 88-120 <2.0 97.9 r03 97.9 101I I I T t T t I T t t (801) 263_8686 Toll Free (888) 263-8686 Fax (80 l)263-8687 ernail: awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer The pH of the sample was >2. Anarysis was performedwithin the 7 day holding time. I .,i.,"ronr.o.ou).ToLr:::,":::::::"rr:"::::,::"::" I I I t I AMEzuCAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 2nd euarter Ground Water Lab Sample ID: L84415-094 Field Sample ID: MW-31 Collected: 613/2008 3:45:00 pM Received: 6/6/2008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 6/9/2008 3:40:00 pM VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: trrgll Dilution Factor: I Compound Reporting Limit Analytical ResultI I Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d8 2.0 8l-143 85-l 15 80-124 88-120 <2.0 99.1 104 99.7 102I I I I T I T T T T T (801) 263_8686 Toll Free (888) 263-8686 Fax (80 l)263-8687 email : awal@awal-labs.corn Kyle F. Gross Laboratory Director Jose Rocha QA Officer = .r!,:t.-o,"l,3ooX.:::.:::Y::::"::::l::::: I I I I I AMERICAN WEST ANALYTICAL LABORATORIES Contact: Steve Laudau Analyzed: 619/2008 4:05:00 pM Client: Denison Mines Project ID: 2nd Quarter Ground Water Lab Sample ID: L84415-t0A Field Sample ID: MW-32 Collected: 6/5/2008 8:05:00 AM Received: 6/612008 Analysis 82608/s030B Analytical Results VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll. Dilution Factor: Compound Reporting Limit Analytical ResultI I 841 l5 Tetrahydrofrran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8r-143 8s-1 15 80-124 88-120 <2.0 99.7 104 101 102t t I t t T t t I T I (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 ernail: awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer The pH of the sampre was >2. Anarysis was performed within the 7 day holding time. I , .."oo,, . o,olHij,?]]" i:"ri1lll" "::::l :::::olsuhscqucntuscufthcnnmcol'thiscompail,orimymcmbcrofitsstaff.orrcoiodilcti T I t t I AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: Semi-Annual Groundwater Lab Sample ID: L84302-07A Field Sample ID: MW-60 Collected: 5 /28/2005 l 0:32:00 AM Received: 5130/2008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 5l3ll}009 7:30:00 pM VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll. Dilution Factor: I Compound Reporting Limit Analytical Result T I 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 tt6 107 110 99.5I T I I I I T t t t T (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 ernail: awal@awal-labs.com Kyle F. Gross Laboratory Director Jose Rocha QA Officer , .,"o"n i. o.o"io")JI:ff::; ::il::..i::'.:,;il subscqu.nr usc ofthc name ofrhis comnany or:my mcmbcr ofl i15 siillf. o, i"proJr",iun ,,, ,n,s rcpo( rn cotrncclion wjth thc rdr R€portDate: 6,21200g pageg of9 I I I I I ORGANIC ANALYSIS REPORT AMEzuCAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 2nd Quarter Ground Water Lab Sample ID: L84415-l lA Field Sample ID: MW-65 Collected: 615/2008 8:05:00 AM Received: 616/2008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 6/9/2008 4:31:00 pM VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT 841l5 Units: pgll, Dilution Factor : I Compound Reporting Limit Analytical ResultI I Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-1 15 80-124 88-120 <2.0 99.2 102 l0l 101I T t I T T t I I I I (80 I ) 263-8686 Toll Free (888) 263-8686 Fax (801)263-8687 ernail: awal@awal-labs.com Kyle F. Gross Laboratory Jose Rocha QA Officer Report Date: 6/101200S page 12 of12 1,1 1e111,ffi;. :,n.':::H" ;::::.::l-1of$ubscqucnt usc ofrhe nim!, ofrhis comDi T I I t I AMERICAN WEST ANALYTICAL LABORATOzuES Contact: Steve Laudau Analyzed: 5/3llZOOB 7:55:00 pM ORGANIC ANALYSIS REPORT Client: Denison Mines Project ID: Semi-Annual Groundwater Lab Sample ID: L84302-08A Field Sample ID: MW-70 Collected: 512812008 2:40:00 pM Received: 5/30/2008 Analysis Requested: 82608/50308 Analytical Results VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT 841l5 Units = pgll- Dilution Factor: I Compound Reporting Limit Analytical ResultI t Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-1 15 80-124 88-120 <2.0 tt7 104 109 98.0t T I I t I T I I T T (801) 263_8686 Toll Free (888) 263-8686 Fax (801)263-8687 ernai[: awal@awal-labs.corn Kyle F. Gross Laboratory Director Jose Rocha QA Officer ^\JPr L u4re. uReportDate: 61212008 pagegofg locrtcd on thc atrnchcd COC. This rcnon is provided for tho cxclusivo uso ofihc addrcssoc. privilegs ]:"S::,..":"T::,:-",lllp^1:ll.i:l o"'::l:t'". ;n ronnerion wirhihc ,,-i,ui""i"l-oi,r,i. ."oon r". t t I I I ORGANIC ANALYSIS REPORT AMERICAN WEST ANALYTICAL LABORATORIES Client: Denison Mines Project ID: 2nd Quarter Ground Water Lab Sample ID: L84663-08A Field Sample ID: MW-75 Collected: 6l18/2008 9:52:00 AM Received: 612012008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Laudau Analyzed: 612412008 10:52:00 A VOLATILES bv GC/MS 82608 I 463 West 3600 South Salt Lake City, UT Units: pgll, Dilution Factor: I Compound Reporting Limit Analytical ResultI I Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8t-143 85-1 15 80-124 88-120 t0 94.4 100 96.s 101t I I T I I I I 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. Analysis was performed within the 7 day hording time. I * "* *, *:ffI"?::;:f"'11111" :"::; ", o ooBa- od4 lL CJo zoFt) U*og c.l ooNrr oIcl '!l'l6 ood EaoIE$ J r*z oooE LUo oFU)5(J*a€ C',1@ ?Fq1 6se N\r G c.l$B t--o maI ;b.l o@E.E (_)o zoFv)Do * EN 4,ooFiIo @ooNr G \oa (nI€rf@,l oryB: ou'I Oo oOE ()F(/,5o *oIN A<oo<)r+ c{€ooN o II$@ B od CJo oFtn)o*oIc.l o3p'i,&oo oI6 ci @ood I =* !+o II\f J c)Fc.7 () 1o\oC\ AoI ql €ooNts 6 mooIs!t€,l T B ou€ lu o aoF65U 5egr.t A<oI€qlal€ooNb I c{o II @F] 00E:q()o oFa CJ +oIN oododE oIN o\&ooN a I€ a,.1 ool,G oa t- c) U oH (,'E:Jid F]{) |l) (A m\o\o SFco F] L(9 f.oo FrGvJu.:st>oa> ll ll ti ti i t t t I I I i I +I I J () e0 acA q oqoilo A o A o go o C) A qa u) o o a o ch hrEqvNEts(5H-EH\J6Efr 8EtEl 4qE E:rV, QNo ascthl .5J(r)(),. -L(c!qJ k(l) I E-a)!agFl !qUEOFr Mxjiil H;Et I Es l--- Chain of Custody/Sampling Analysis Request II t Please send a si By:(Signature) DENISO"DJ AMINES CHAIN OF CUSTODY samplesshippedto:ffi @ Salt Lake City, Utah 84115 fuoarj t?,t.hi qo E L)c ^ooo hs_T' '=@6f/rB66>o8a CE.g;ogoQ-OF66a- u) E=g CLE6 oE .E 0,o-E6 o EaoEo oE G Joo_ o0) c;z booz oZtrl ;ll) Ef U U 6 o&6,Fl oG) =q)q oo 6tqo) <) A GID o2 d) t< o g oU o 6 Ar'(,c)=ao v) €,ftl (g(, Ldo(J () U)IRF E qqd() ait)€ 05dEVJ "J F E o)o6 qd.s# ''oxzQn(u,(J!l(JO {'qi6O*>/a &irE"s*ou)AJr<RFE EE ko d dK) 0) ea-l ozE o F" Ue os< oa.fiuk$o:Au3 o2q O\-pv F." oh! U <rio;-63..]no =oOZ o gE9>€x. F oD1 E"D(na c7:E o OoLOtr{>-E or{*aEn U) Enos ,hscvF,2 i;B--z o o oq a ( d >' oA U)p!7\ !s)o =o)a d!d C] .g,.oi E -g o) ()\{ (J ,1 l^' rDk =Go oF zE o.7 o E b{ 6(,)-] c, o ca 0)d 4o z {zE oztl 0 Eo k{)v,()LOr {) o P{ o oz ozE o>*l5 oHEa 4 Lio& qo o2 r$\ TY \i" n C)a -o(sJ I I t I It I I Ii I FC{(OS()(ON Ocotr)soo FJ 'IE.35q-ieRo fr14..a \oi.irB E oU o.troo oti t1,L z obt) o a o o a -o ooo o GA o A o oo oo A o tr U) EEJ(!oUAo/J oE U) o (J E liE ::E -El.=t-l o =(9-AE& 8EEEI qoo frEtu). ANo\l & triio E.q\.=Ot<-L'-(rJAi t- l I II I I I II I t i II I I ,I 6t +.ra() F ti c.) t{q) o oB,B0_ obo Iroo oF{a)D() +oENq q oaNN NIo +€ ,.1 z o? 'n@ ooN d E d > ouE tt o ot-,a) (J 5 gN€ €ooNral I oo ooqI € mN Iz oo !i€tJ z IIo c.l @aoN6I f4Sio DENrso"t)## MINES CHAIN OF CUSTODY SamplesShippedto: AmericanWestAnal@ ffi ffi Chain of Custody/Sampling Analysis Request Project samplerc Name sampters signature Rel inqu ished By: (Sign;ture, Jo,nnr,. A oa,oq, F] I I I I I I 0 o. T6 E5oo0 (g ooo.-o-6 {1)g .c'= o.oc :=tI)'.o E .EE-t8pEr.l'i 2o.q k qgEi.ijE',.60= frEoJSA o1 m rD.l.E --dE.9.: 6'<c-oiEF€'rEo, o iil =X e698:dE €.=3E b' O=o6LOg#tE#g:t a.9?.e o EETHEg:O -.- L c ;i+qooo:e=:8.:gEE o!l.o Is6EliE-B:hZ E;8 HSOoEoEo-cl=rL(L(/) o CLE(Uqog .E .Il,CLE6o o Efo E6 6Eo 6 C{ (', tf ta) (O F- o oErrEa- out 'L(Jo oFa5U*o€f.lo aooN Q 2Aooo1N€ooNad or* €ado{@J dIE leoo aoF.U' I +o€N@ @ooa.l € A oec.lq'!o aooNad Fo do 6J ou r&(J otro U +oIN@ qooa E €?alo id.€J :0roeo!!ol€o N€N ood I 50 =tri(Jo tsa (.) *6\cc.l@ oI r&ood€d o do+@J r+N F >i d 'cle()o zot-at3o ao€N€ @ooN a Aoco':tc{@ aN€N =ioNo .+€ ,.1 r- F M 'trt&(Jo ood g oF0Do BoIN@ trro .ae 6oN€N BE ?alo .+@J €<,oN 6 g od l&(J oF(/,3U +o€Na oe g) Or @oedbd No do\t€J T> oMg ,F C)o o,d @eod € @ oNo oFa (.) +oId : a?oq] @ood€N TF o al<) sJ oEt)G o u) o (J oF o ato Io oU o A 6)6 E'o oIo c a o o a o U o tt) l^lslFrEls* l$3tl" l Il*l"EI -EHt....dI EE*I >l g'FI BS B l-E.EI E gil * 3 fll r {t -t - o'A 51 5 H € tI6Ers.9lv .. E iIE EEs I I I I I ! i li It I rl rl ri I lll T I T T; I I ti I T, DENISOJ)dd MINEg CHAIN OF CUSTODY SamplesShippedto: AmericanWestAnalytie @ ?'/bor...- Chain of Custodylsampling Analysis Request ished By:(Signature) oo =ct E PEoo Eiil6_I'roE'eN-a!oE6(o>(,)o:-3A ,0, ;o9orqOEjy6a-(, {t)t .ggcr E(tr @ o EfoE6 s Eq d (u oo(, c.Efoo'o 6.C o.ooo(oo! ;o-o-c.=o'.oo E8.86-olg 6 EEPHsetE'16 a) =g'o l2 ii6oI.SE q.!0 L'; E- o.EF5E@65'>r 5e ohoroox >: E6d-: E.HB -T t€tr't o !z.9 drI*=; E Erc o!1(,P';i(J39 For- 6 OoO66n o*[ FNO$6@N ufo{t}op oo ;z d,€oz o E @o E UcU (!1'. o,,aslFI 0)c) E]o1Elqlot sl 6lcLlol olalal I 6)oz @ E< o (! EIoU () 4 A (u U) FJ fIm1r1 aq((5,6C' (J.lJ()E o a Flg D q d(, ka, "oH o o.4r2t/.1 F<l D1 d)I 4(d =d).=H /'oNZBn\oO9OHt€'Jd]to)gE -GEI.w'a7.9/q. (J aDr-l r44)*€ EE C)tr o9E/o) c.ra,l B ztr i;6 B €,)a(g F{ UoU oP< kSoEZUD oEoH#ogL T5.I1{\ q) 60E<o>6Afnq) 50OZtrEo ^9r_9>EE D oS 3H (gco \A oLJ ru oa:<. ()F>tl -e<*LtrH({'_U) oz ou oiisE>PB q() oz ajlio B o 6lu)t v-,\ \I ml;lolol .3.1 ?lPI 'tIolr<ld)t>t =lolol'ol dtEIEl 6 "o tr C) U, bL sJ I{l I EIgloloI EId)tF.l 1l o ts o, a) "l() o ca oc)d { ^\sjr \\ -$ I,--LrUft c\y ,.? { >. I Sr\ trl.Sl.lg3 ZN zE ozE o (i E BI>t'Hl()t EI ?lLIqil ol &l qc)oz o 41D .q) -tb ro oH '= 5 dlI)& q{) oz J 11>. A ocnp(l r-1 I I :t t I T II I!I I ll I i I rl ri li T t t; I T I TJ Ea I n{ ir.o ?o d a)oFl @p o.J >.o o oH 0q FIJp ildH I I (r V)Foo(T E R"rJoE E Ir{frj E]r{ : (lt tu\o N)C)Ooo RYAI'I pAtMER (435) 578-2121 BBfHH,IflrTfJ'A) coRP. BLAI{DING UTS45I1 DWT:12,i.0,8 I SHIP TO:I .nMrRICAN wEsr ANALvTICAL i.,q.Bi 801-263-8686 AMERICAN i^TEST ANATYTICAI LABS E 463 WEST 3600 SOUTH SAIT LAKE CITY UT 84L75.4246 uT 841 g-44 iltilililililtffitililililil UPS NEXT DAYAIR TRACJ{ING #: tZ B4L 6TL 0L 9SgB 8066 I 'ilil|il!ililil ffiilil ililtil BILLINGIP/P Reference#L : 52908-puawl-1 rEE-f IJIS 10.1.06, !\D@I860 TF.oAor4oos I fil I tnt o a)o)(Uq. obDE o aFU) o +oEe{€ €ooN oal I €J € B odI! t!(Jo oFrIDI)o EoI.l€ @ooN d oo o6 @od I c.l * .> o @.l ob0 'iIq(J :oF.U1 (J Bo\oc.l@ zpi Qe :q oode@ 6o {@,l * oo,! t!(Jo =5Fa)(J tsoIN6 Aa?oi ooNaa 6o 3 o *z obo =&()o oFa/) ()tEc{@ oqo.!.:o ooN{€ ro *+@J oooE r&L) oFa () +oIc.l€ EoadoGIg =aIo$ ood Ea ++6 "l om .E,r(Jo oFq foIN@ €oododI Ao o ood NE FctBE o +@ -l 60P 14()o oFU)I)() oIN@ @ooNod I :AioI Y'! oad{I a t 3 6i = o60 'cILoo oFTADL) +oENa oodad I ?o ';s @ood{p 5 o aJ ob!! (-)o oFU'Do oIcq oosoN I oII €oad*€ $F a{o @J obo 'iIToo oo 6 zats4 5o crl€ ooaod oeqe6 @ooa I o +6J eo0 o U) o oo A a oao o Go o .oU oFr x t4 o A o Io oU a €U) o U o d io oko d)ok iii En& aH{, 6t) l-,{ i5 are)c6'FEUc.U r/) -+\f,cotJE 'o (1)'i?;ooa\6 :vcni!r\oj.!SF E oQ >,h lr O & FrI ,-{g, Mfr T t T aE6i F] €\l CJ h ctx {.ra(),. 6nq) Lo) I t I I I I I i I I I I I I I i ! t I T I I I I DENISONDJ# fVIINES CHAIN OF CUSTODY Samples Shipped to:ffi@ z4+\{ I t I T I I I Chain of Custody/Sampling Analysis Request By:(Signature) firt" J:- ,l__I+l t"rN t I A o HFl I I =a6'Q66-F t Denise Bruun lt l! ll tt I i I + i I I i +t From: Sent: To: Subject: Attachments: Steve, Denise Bruun Friday, June 06, 2008 11:30 AMSteve Landau (slandau@denisonmines.com) AWAL Lab Set A441S t 2nd euarte, Orounl'WaterAR-M355N_20080606_1 1 24ZT .pdf Today we received samples for the 2nd quarter ground water sampling. Attached is a signed chain of custody which wasrequested. On there you will see the following discrepancies: L- There was no analysis requested for sample Mw-32. I assume you would like Tetrahydrafuran run on thissample.2' we also received a sample MW-55 which we added to the chain of custody and will go ahead and also run forTetrahydrafurnan. 3- we also received one broken vial for sample MW-29. However, we should be able to run this with no problem. lf there are any concerns on how these discrepancies were handled, please let me know. Thank you. Denise Bruun American West Analytical Labs801.263.8686 FaxAOt.Z1S.AAAZ tnyw.awal-labs.com H:Xr.TJ:11',",$rf;,lHff"[ffi$:1,1,1'"':ffiffl,ffi:i,,;;':*:H:,ilX81ffir'ff:;Jkgffi i,T1.,",:'fl'I;#:ase notin, rhe sender immediate,y $t^le Laono\a"r. ccrlrled $o ca,.Srrrm, +t^a- qhlue, 0orrggftrh* rrJ'ere So0A)U r,Jrrfoa n'sb- I I I t i us LOFI. DItVT:26,L4,12 SHIP TO: $4ESIgAN wESr ANArYrrcAr rAB801-263_8686 AMEzuCAN I4IEST ANATYTICAL LABS463 WEST 3600 SOUTI{SALT I,AKE CITY UT 841. 1"5.+i.46 uTS4 lw ilililIiltilililflilililtilt UPS NEXTDAYM TRAA<ING #: LZ B4t 6Tt 01, gS(4 06Z8 flffiffiil|ililtfliil#ililItrfftil us tol.oa sR@E?o75.Oaor./2o08 T t t T t I I 5t29t2008 5t29t2008 st29t2008 5t29t2008 5129t2008 I I I I I I I I I I I I T t I I t I I WELL ,/,h*-,/nu -, J ldrst-tJWaa llttw-+y' uw-s ,,/ttlW-11"Jtafitz t/ilw-r+ v/uw-'ts/ MW-17/uw-tay'\ttw-tg 1/1{tw-zo/ uw-zz ,/ ttrw-zl r' MW-24 /vw-zs /'f W-26 ,/ tttw-zl /trtw-za /AAw-ze{/uw-zo//taw-st/ t'trw-lz r,/ pvz-t Jptz-z JpEz-s,/bvz-+ tJpvz-s 612512008 77.24 6124120A8 61.98 612412008 69.49 612412008 47.64 612412008 64.62 612412008 54.19 612412008 73.23 612412008 68.13 612412008 69.04 612412008 52.15 6t24t2008 54.37 6t2412008 62.61 6t2412008 36.64 612412008 49.94 6t24t2008 89.86 6125t2008 79.89 6t2412008 63.96 612512008 77.16 6t24t2008 54.81 6t2512008 95.92 6125t2008 69.53 6t24t2008 60.19 6124t2008 55.96 6t24t2008 67.84 6t2412008 56.49 6t2412008 50.65 Quarterly Depth Summary 2nd Quarter 2008 DATE DEPTH 6t412008 6t4t2008 5t28t2008 5t28t2008 5t27t2008 6t18t2008 6t1612008 6t17t2008 6t18t2008 6t18t2008 5t28t2008 6t412008 6t4t2008 611712008 6117t2008 6t9t2008 5t28t2008 6t12t2008 5t2712008 6t2t2008 6t3t2008 6t312008 6t3t2008 6/3/2008 6/5/2008 67.14 109.63 83.51 85.58 73.38 106.9 91.44 108.84 104.15 106.9 77.86 72.16 50.53 78.98 67.64 1 13.93 114.92 76.9 79.06 51.44 78.45 103.1 78.24 71.9 76.67 63.66 14.63 31.26 52.27 47.15 WELL MW-4 TW4-1 TW4-2 TW4-3 TW4-4 TW4-5 TW4-6 TW4-7 TW4-8 TW4-9 TW4-10 TW4-11 rw4-12 TW4-13 TW4-14 TW4-15 TW4-16 Tvv4-17 TW4-18 TW4-19 TW4-20 TW4-21 TW4-22 TW4-23 TW4-24 TW4-25 DATE DEPTH H IIIIITITII ITITIIIII l( lt ll\ // lt////-o_-.r-- ,dL, ll tl tl \\ \\ \\.. MW-20 N a'\ G462 3 % __ ^ .\\\I *\=.--::--: 1- r\ 0 SCALE IN FEET 3OOO Mw.22 //oil5o //////.// EXPLANATION ?o lp_I{gd_Tqitorins weil showinss46z elevation h feet amsl o sssz :iffi?,:ffiHi,iE:[li,i *, "t]r-l."" ngrched piezometer showing- 55e2 elevatkm in het amslMW-31 perched monitoring well installed Aorit.? s545 snowing eEvation in feet amsl -24, andTW4-2S are approximate <| sszs ffii"iffi'H$i,fr?iil:1i.xi,Xi*,,Tlili' fr ssro ffiryi8fl, ffi:Tffi T3iiiT],H,:ij?:,flf0 \ \\ il t/ // q PtEZ.3.5607 //(//\,ll l1 l1 -rlt ll ;l 1l 1l 1l 1l 1l 1l gl 1l 1l 1l 1l 1l 1l gl 1l -:+-- HYDRO GEO CHEM,INC. KRIGED 2nd eU_AEfER, 2OO8 WATER LEVELSWHITE MESA SITE Page 1 of 1 Steve Landau I I I I I I I I I t I I t I T I I I I To: Gc: From: Steve Landau Sent: Friday, August 29,200810:58 AM 'Dane Finerfrock' 'dfrydenl und@denison m i nes.com';'Loren Morton' Subject: 2nd Quarter 2008 GWDP CSV Data Aftachments: C07061553.csv; C07061184.csv; C07051188.csv; C07041230.csv; C08051285.csv; C08060706.csv; C08060292.csv; C08061 004.csv Dear Mr. Finerfrock, Attached to this email is an electronic copy of all laboratory results for groundwater monitoring conducted under the Groundwater Discharge Permit for the White Mesa Mill during the 2nd Quarter, 2008, in Comma Separated Value (CSV) format. Yours truly, Steven D. Landau 812912008 I I t I I I I I I I I I I I I Page I of2 Steve Landau From: Jim Yocum flyocum@energylab.com] Sent: Friday, August 29,200811 :36 AM To: Steve Landau Cc: kschroeder@energylab.com Subject: RE: Spike Recovery Attachments: Sample lD C08061004.doc; 8260 LCS Control Performance 82908.pdf; 8260 CCV Control Performance 82908.pdf; 200.8 CCV Control Performance 82908.pdf; 200.8 LCS Control Performance 82908.pdf; 200.8 MSMSD REC Control Performance 82908.pdf; 200.8 MSMSD RPD Control Performance 82908.pdf;Ammonia MSMSD REC Control Performance 82908.pdf;Ammonia MSMSD RPD Control Performance 82908.pdf;Ammonia LCS Control Performance 82908.pdf;Ammonia CCV Control Performance 82908.pdf; 8260 MSMSD REC Control Performance 82908.pdf; 8260 MSMSD RPD Control Performance 82908.pdf Steve - I have analyzed all of the reports that you sent with the QC failures. I looked at the failures themselves and all of the noted failures were in Matrix spike samples. Method performance is primarily evaluated by the performance of the LCS. Additional performance is also monitored by the recoveries of the surrogate in the case of organics which are injected in all samples in the run. ln all but one of the cases, the failure showed up in both of the matrix spiked samples which is strongly indicative of a "matrix effect". This is essentially where the matrix has an interferent present that will show either a consistent low bias or high bias in all of the aliquot of the sample. ln the case of the sample where there was only a failure on the matrix spike but not the duplicate, it still was strongly indicative of a matrix issue. All laboratory control samples (CCVs, LCSs, Method Blanks) showed acceptable results. I have attached a word document with the analysis of each sample failure and also included LCS, CCV and MS/MSD charts indicating the performance of each method used in your analysis. Respectfully, James Yocum Qu ality Assurance Director 2393 Salt Creek Hiohwav (82601) P.O. Box 3258 Casper, WY 82602 Toll Free 888.235.0515 Local 307.235.0515 Fax307.234.1639 E-Mail :iyocum @energylab.com Visit our web page at:http://energylab.com/ This transmission is CONFIDENTIAL. lf you have received this in error, ptease contact EnergyLaboratories, lnc. immediately. t I I I From : Kerri Sch roeder [mailto : kschroeder@energylab.com] Sent: Wednesday, August 20,2008 15:57 To: jyocum@energylab.com Subject: FW: Spike Recovery 8/29/2008 I t I t I t I I I I t T I I I I I I I Sample ID C08061004 - The matrix spike of sample C08060957-010 demonstrated a high recovery for Carbon Tetrachloride in both the original spike and duplicate spiked sample. The LCS or laboratory control sample associated for this batch showed acceptable results for the compound in question. No Carbon Tetrachloride was observed in the method blank associated with the run. The Carbon Tetrachloride failure in the Matrix Spike and Matrix Spike duplicate indicates a matrix affect on this compound. Sample ID C08060292 - The matrix spike of sample C08060292-0Il demonstrated a high recovery for Chloroform in both the original spike and duplicate spiked sample. The LCS or laboratory control sample associated for this batch showed acceptable results for the compound in question. No Chloroform was observed in the method blank associated with the run. The Chloroform failure in the Matrix Spike and Matrix Spike duplicate indicates a matrix affect on this compound. Sample ID C08060292 - The matrix spike of sample C08060292-003 demonstrated a low recovery for Ammonia in both the original spike and duplicate spiked sample. The LCS or laboratory control sample associated for this batch showed acceptable results for the compound in question. The Ammonia failure in the Matrix Spike and Matrix Spike duplicate indicates a matrix affect on this compound. Sample ID C08051285 - The matrix spike of sample C08060170-004 demonstrated a high recovery for Carbon Tetrachloride in both the original spike and duplicate spiked sample. The LCS or laboratory control sample associated for this batch showed acceptable results for the compound in question. No Carbon Tetrachloride was observed in the method blank associated with the run. The Carbon Tetrachloride failure in the Matrix Spike but not Matrix Spike duplicate. This would be a concern if the matrix spike duplicate was significantly below the recovery value of the matrix spike analysis, however the matrix spike duplicate recovered just below the upper limit of the method criteria. As the reproducibility was demonstrated by an RPD value of 5.5, this initial failure is still indicative of a matrix issue interfering with the spike addition. Sample ID C08051285 - The matrix spike and matrix spike duplicate of sample C08051285 failed low for spike recoveries on silver and thallium. The LFB or laboratory fortified blank for the sample run showed acceptable recoveries for these parameters. Acceptable blank levels were observed for the method blank associated with the run. The fact that the failures were I I I I I I I I I I I I I I I I I I I closely duplicated in the matrix spike and matrix spike duplicate is strongly suggestive of a matrix affect from the sample. Sample ID C08060292 - The matrix spike and matrix spike duplicate of sample C08060292-010 failed low for spike recoveries on silver. The LFB or laboratory fortified blank for the sample run showed acceptable recoveries for this parameter. Acceptable blank levels were observed for the method blank associated with the run. The fact that the failures were closely duplicated in the matrix spike and matrix spike duplicate is strongly suggestive of a matrix affect from the sample.