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HomeMy WebLinkAboutDRC-2008-002302 - 0901a0688081b673White Mesa Uranium Mill Groundwater Monitoring Report State of Utah Groundwater Discharge Permit No. UGW370004 l't Quarter (January through March) 2008 Prepared by: Denison Mines (USA) Corp. Suite 950, lo5o lTth Street Denver CO 80265 May 29,2008 t I I I I I I I I I I I I T I I I I I 1. INTRODUCTION This is the Routine Groundwater Monitoring Report, as required under Part I.F.1 of State of Utah Groundwater Discharge Permit No. 370004 (the "Permit") for the l't 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, LE.2 and I.E.4 of the Permit, this Report includes all recorded field measurements and laboratory analyses for well monitoring conducted during the Quarter. 2. GROUNDWATER MONITORING 2.1. Samples and Measurements Taken During the Quarter A map showing the location of all groundwater monitoring wells, piezometers, existing wells and temporary chloroform contaminant investigation wells is attached under Tab A. During the Quarter, the following groundwater samples and measurements were taken during this reporting period (July through September). a) Groundwater Compliance Monitoring (i) Quarterly Groundwater Compliance Monitoring Quarterly Groundwater Compliance Monitoring is performed in the wells listed below, pursuant to Part I.E.1. a) of the Permit. MW-ll MW-14 MW-26 (formerly TW4- I 5) MW-32 (formerly TW 4-17) (ii) Accelerated GroundwaterMonitoring. In addition to the routine quarterly monitoring referred to above, DUSA collected accelerated monthly samplings for select constituents at wells: MW-14, MW-26 and MW-32. Also, accelerated quarterly samples are collected at certain locations and for select constituents at wells: MW-1, MW-3, MW-5, MW-12, MW-I5, MW-l7, MW-18 and MW-I9. (iii) 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 on March 12-19,2008. As such, the following monitoring wells were sampled on those dates: I I I t T I I t I I I I T t T I I T T MW-3A 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 January 29 and February 20,2008. Routine quarterly, semi-annual and accelerated quarterly sample collection occurred on March 11-19, 2008. (v) Parameters Analyzed All routine groundwater monitoring samples were analyzed for the parameters listed in Table 2 and Part I.E.1 .c) z)ii of the Permit. The accelerated monitoring samples were arnlyzed for the more limited specific parameters described in Section 2.4 of this report. b) Groundwater Head Monitoring Depth to groundwater was measured in the following wells and/or piezometers, pursuant to Part I.E.2 of the Permit: (i) The quarterly groundwater compliance monitoring wells listed in paragraph 2.1.a) above were measured on either March 12, 18 or 19, 2008 depending on location. (ii) (iii) Piezometers - P-l, P-2,P-3, P-4 and P-5, on January 2,2008; Existing monitoring well MW-4 and all of the temporary chloroform investigation wells, on March 26,2008; (iv) In addition to the above, depth to water measurements are routinely observed in conjunction with sampling events for all wells sampled during monthly, quarterly and semi-annual monitoring efforts, regardless of the sampling purpose. 2.2 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 March 1l-19, 2008 for the groundwater compliance monitoring wells listed in paragraph 2.1 (a) above. T I I I I I t I I I I I I I I t I I t 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 January for monitoring wells; MW-14, MW-26 and MW-32. Attached under Tab D are copies of all field data sheets where field data were recorded in association with monthly accelerated monitoring and sampling efforts during the month of February for monitoring wells; MW-l4, MW-26 and MW-32. 2.3 Laboratory Results -- Routine Groundwater Monitoring 2.3.1 Copy of Laboratory Results All analytical results are provided by Energy Laboratories, the Mill's contract analytical laboratory (the "Analytical Laboratory). There are four sets of laboratory analytical results included in this Report. . Samples collected for the January accelerated sampling were reported on March 3, 2008 (Tab E) Also included under this Tab are the results of a duplicate sample of MW-32 (MW-65, ll29l08). 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 is not included with monthly samplings due to the limited number of samples collected. . Samples collected for the February accelerated sampling were reported on January 7, 2008 (Tab F). Also included under this tab are the results of analyses for a duplicate sample of MW-32 (MW-65, 2120108). 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 is not included with monthly samplings due to the limited number of samples collected. . Samples collected in March (3/11/03 through 3/lgl}8) for the 4fth Quarter and Accelerated Quarterly samples under the Permit were reported in two data sets on April l0 and April 29,2008 (Tab G). Also included under this tab are the results of analyses for duplicate samples of MW-32, MW-25 and MW 14. (MW-65, 70 and 75, respectively). A field blank (MW-60, 3/20/05) 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 t I t I I t I I I I I I I I I I I I I 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 Wite 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 (Intera, 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). Until such time as background is established, the Permit requires that constituent concentrations in each monitoring well shall not exceed the Groundwater Compliance Limits ("GWCLs") set out in Table 2 of the Permit. DUSA's review of the analytical results for the Quarter indicates that concentrations of the following constituents in the following monitoring wells exceeded their respective GWCLs in Table 2 of the Permit: Table 1- GWCL Exceedances for the Quarterly Sampling A separate Notice of these exceedances has been submitted to the Executive Secretary on February 13, 2008, pursuant to Part LG.l.a) of the Permit. Unless the compliance status for any constituents in any wells is determined otherwise by the Executive Secretary, the Mill will, pursuant to Part l.G.l.b)l) of the Permit, cornmence 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: Monitoring Well (Water Class) Constituent GWCL (us/f ,) Sample Result (ug/L) MW-14 (Class III) Uranium l5 65.8 Manganese 400 2280 MW-26 (Class III) Manganese 400 1390 Uranium I5 46.3 Chloroform 35 1300 Dichlormethane 2.5 66 MW-32 (Class III) Manganese 400 s660 Nickel 50 59 Iron s.500 8370 I I I I I I I t I I T T I I I I I I I Table 2 - Accelerated Monitoring Requirements as of May 8,2008 Monitoring \ilell (Water Class)Constituent Normal Frequency of Samolins Accelerated Frequency of Samnlins Commencement of Accelerated Monitorins MW-1 (Class II) Tetrahvdrofuran Semi-Annual Ouarterly 4"'Ouarter 2005 Manganese Semi-Annual Quarterlv l"'Ouarter 2006 MW-3 (Class III) Manganese Semi-Annual Ouarterlv l" Ouarter 2006 Selinium Semi-Annual Ouarterlv 3'" Ouarter 2006 Thallium Semi-Annual Quarterly 4'n Ouarter 2005 Uranium Semi-Annual Ouarterlv 4"'Ouarter 2005 Tetrahydrofuran Semi-Annual Ouarterlv 3'o C)uarter 2006 MW-5 (CIass II) Manganese Semi-Annual Ouarterly 4"'Ouarter 2005 Fluoride Semi-Annual Quarterly 4'" Ouarter 2005 Tetrahvdrofuran Semi-Annual Ouarterlv l't Ouarter 2006 MW-l2 (Class III) Manganese Semi-Annual Ouarterlv 4"'Ouarter 2005 Uranium Semi-Annual Quarterly 4'n C)uarter 2005 Tetrahvdrofuran Semi-Annual Ouarterlv 4"'Ouarter 2005 MW-14 (Class III) Manqanese Ouarterlv Monthlv June 2005 Uranium Quarterly Monthly June 2005 MW-l5 (Class III) Selenium Semi-Annual Ouarterly 4"'Ouarter 2005 Uranium Semi-Annual Quarterly 4'" Ouarter 2005 MW-l7 (Class III) Uranium Semi-Annual Quarterly 4'o C)uarter 2005 Thalium Semi-Annual Ouarterlv l" Ouarter 2006 MW-18 (Class II) Thallium Semi-Annual Ouarterly 4"'Ouarter 2005 Uranium Semi-Annual Quarterly 4" Ouarter 2005 Manganese Semi-Annual Ouarterlv Januarv.2008 MW-19 (Class II) Fluoride Semi-Annua Ouarterlv l" Ouarter 2006 Selenium Semi-Annua Quarterly 4'" Ouarter 2005 Thallium Semi-Annua Ouarterly I't Ouarter 2006 Uranium Semi-Annua Quarterlv 4- Ouarter 2005 T t I I I I I I I T t T I I I I I t I 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 [Jranium Mill Site, San Juan County, Utah (Intera,611107) and its April, 2008 revision. 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 Laboratory Results - Accelerated Monitoring The analytical results for the accelerated monitoring of the various constituents in certain monitoring wells for the months of January and February, 2008 are provided at Tabs E and F respectively. The results of the I'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 Well (Water Class)Constituent Normal Frequenc5r of Samolins Accelerated Frequency of Samnlins Commencement of Accelerated Monitorins MW-26 (Class III) Manganese Quarterly Monthly June 2005 Uranium Ouarterlv Monthlv June 2005 Chloroform Ouarterly Monthly June 2005 Dichloromethane'Quarterlv Monthlv September 2005 Dichloromethane'Ouarterly Monthlv Seotember 2005 Tetrahydrofi.ran Quarterly Monthlv March 2006 MW-32 (Class III) Cadmium Ouarterly Monthly June 2005 Iron Quarterly Monthly June 2005 Mansanese Ouarterly Monthly June 2005 Nickel Quarterlv Monthlv June 2005 Gross Aloha Ouarterlv Monthlv March 2007 Monitoring Well (lYater Class)Constituent GWCL(ttoll,l Sample Event Sample Result (us/L) MW-l (Class II) Tetrahvdrofuran I 1.5 2"" Otr 2005 85 4'" Otr 2005 58 1"'oh 2006 48 2"" Qtr 2006 60 I T I t I I I I I T I I I I I I I T T MonitoringWell (Water Class)Constituent GWCL frroll.)Sample Event Sample Result (us/L) 3'" Otr 2006 26 4'" Otr2006 16 l* Otr 2007 14 2"" Otr 2007 NA 3'' Otr 2007 l5 4'" otr 2007 t6 l" otr 2008 <2.0 Manganese 200 4- Qtr 2005 215 1" otr 2006 220 2"" Otr 2006 230 3- Otr 2006 2t6 4"' Qtr 2006 198 I't otr 2007 229 2"" Otr 2007 NA 3'" otr 2007 30 4"'O1I2007 t5 l" otr 2oo8 l0 MW-3 (Class III) Thallium 1.00 3'" otr 2oo5 l.60 4"' Otr 2005 t.t4 1" otr 2oo6 l.l3 2"" Otr 2006 0.99 3'" Otr 2006 l.l I 4"' Otr 2006 1. l6 l* Otr 2007 0.99 2"" Otr 2007 NA 3'" Otr 2007 l.l9 4'" otr 2007 Ll5 l" otr 2oo8 0.90 Uranium t5 3'" otr 2oo5 35.90 4"'Otr 2005 30.90 l" Otr 2006 39.1 2"" Otr 2006 27.6 3'" Otr 2006 32.0 4"'Otr 2006 28.2 l* Otr 2008 l" otr 2oo7 30.2 2* Otr 2007 NA 3'" otr 2007 t7.4 4* Otr 2007 39.4 l"'Otr 2008 3s.6 Manganese 400 4* Otr 2005 732 l't otr 2006 1.640 2"" Qtr 2006 63t 3'" Otr 2006 1,370 4* Otr 2006 682 l" otr 2oo7 848 2* Otr 2007 NA 3'" otr2007 199 4"' Otr 2007 1.950 l"'otr 2008 1330 Selenium 25 2* Otr 2006 25.4 t T T t I t I I I I I t I I I I T I t Monitoring Well (Water Class)Constituent GWCL (us/L)Sample Event Sample Result (us/t,) MW-3 Contd.Selenium 25 3'," Otr 2006 r6.8 4- Otr 2006 27.9 l" otr 2oo7 20.1 2* Otr 2007 NA 3'" Otr2007 33.6 4* Otr 2007 8.9 l"'otr 2008 13.8 Tetrahvdrofuran 23 2"" Otr 2006 26 3'" otr 2006 46 4"' Otr 2006 l1 l" Otr 2007 1l 2"" otr 2007 NA 3'" Otr 2007 ND 4'" otr 2007 ND l" otr 2008 6.5 MW-s (Class II) Mansanese 200 2"" Otr 2005 250 4'n otr 2005 280 1" otr 2006 259 2"" Otr 2006 228 3'" Otr 2006 237 4"'Otr 2006 228 l"'otr 2007 281 2"" Otr 2007 NA 4'" Qtr2007 142 l" otr 2008 203 Fluoride 1.00 (ms/L)3'" Otr 2007 134 2"" Otr 2005 1.3 (ms/L) 4* Otr 2005 1.0 (me/L) l't otr 2006 0.9 (ms/L) 2* Otr 2006 1.0 (me/L) 3'" Otr 2006 0.9 (ms/L) 4* Otr 2006 1.1 (msJL) [" otr 2oo7 l.l (ms/L ) 2"" Otr2007 NA 3'" Otr 2007 1.2 mdl) 4"'Otr2007 .0 l"'Otr 2008 .0 Tetrahydrofuran I 1.50 4- Otr 2005 J l- Otr 2006 0 2"" Otr2006 7.8 3'" otr 2006 ND 4"'Otr 2006 ND l"'otr 2007 ND 2"" Otr 2007 NA 3'" otr 2oo7 ND 4* Otr 2007 t0 l"'otr 2oo8 9.2 MW-12 (Class III) Manganese 400 2"" otr 2oos 420 4* Otr 2005 27 l"'otr 2006 t7 I I I I I t t I T I I I I T t I I I I Monitoring WeIl (Water Class)Constituent GWCL(usll)Sample Event Sample Result (us/L) MW-12 Contd.Manganese 400 3'" otr 2006 290 4- Otr 2006 92 l" Otr 2007 279 2"" Otr 2007 NA 3'' Qtr 2007 57 4'" Otr2007 60 l" Otr 2oo8 29 Uranium l5 2"" Otr 2005 15.30 4- Otr 2005 16.50 l"'otr 2006 ND 2"" Otr 2006 20.9 3'' Qtr 2006 23.s 4'' Otr 2006 19.8 l"'Otr 2007 19.4 2"" Otr 2007 NA 3'" Otr 2007 8.68 4'" o1r2007 19.2 l"'otr 2008 16.8 Tetrahvdrofuran z)2'" Otr 2005 24 4- Otr 2005 t2 l"'otr 2006 ND 2"" Otr 2006 16 3'" Otr 2006 l8 4'' Otr 2006 ND l* Otr 2007 38 2"" otr 2007 NA 3'' Otr 2007 ND 4'" Otr2007 ND 1" Otr 2008 <2.0 MW-14 (Ctass III) Mansanese 400 l" Otr 2005 1.860 June 2005 I ^840 Julv 2005 2,000 Aue.2005 1.900 Sept. 2005 2.1 10 Oct.2005 I.9s0 Nov.2005 1.880 Dec.2005 1.960 Jan.2O06 2.060 Feb.2006 1.940 Mar.2006 2.070 Aoril2006 2.100 Mav 2006 2.000 June 2006 1.650 Julv. 2006 1,590 Aue.,2006 l.870 Sept.2006 1.860 Oct.2006 l.960 Nov.2006 1.790 Dec.2006 1.960 Jan.2007 t.970 Feb.2007 1.940 10 T I I I I T I I I I I T I I I I t I I Monitoring Well (Water Class)Constituent GWCL (usll-)Sample Event Sample Result (uoll.l Mar.2007 l,930 April2007 2020 Mav2007 1940 June 2007 NA Julv 2007 NA MW-14 Contd.Manganese 400 Ausust 2007 2,0t0 September 2007 2.060 October 2007 2,120 November 2007 2.380 December 2007 2.290 Januarv.2008 2200 Februarv 2008 2080 March 2008 2280 Uranium l5 l" otr 2005 65. I June 2005 58.9 Julv 2005 6s.5 Aus. 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 Mav2006 70.3 June 2006 69.2 Julv.2006 7l.8 Aue.2006 64.7 Seot. 2006 69.0 Oct.2006 66.4 Nov.2006 65.5 Dec.2006 68.4 [an.2007 24.9 Feb. 2007 43.8 Mar.2007 42.8 April2007 18.8 Mav2007 62.4 June 2007 NA Julv 2007 NA Ausust 2007 ND Seotember 2007 70^5 October 2007 68.6 November 2007 6t.6 December 2007 60.7 January,2008 65. I Februarv 2008 64.1 March 2008 ND MW-15 (Class III)Selenium 25 2"" Otr 2005 79 4'" otr 2oo5 92.5 l" otr 2006 102 2"" otr 2006 tt7 lt I I t I t I I I I T I I t I I I t I t Monitoring WeII (Water Class)Constituent GWCL (uoll.\Sample Event Sample Result (up/L) MW-15 Contd.Selenium 25 3'' Otr 2006 tt2 4'" Otr2006 tt2 l" Otr 2007 89.6 2"" ()trzoo7 NA 3'" Otr 2007 94 4'" Qtr 2007 94 l't otr 2oo8 113 Uranium 15 2'- Otr 2005 45.3 4'' Otr 2005 47.7 l"'Otr 2006 50.4 2"" Otr 2006 47.8 3'," Otr 2006 50. I 4'" otr 2006 51.6 l" otr 2007 46.5 2* Otr 2007 NA 3'" otr 2007 28.64 Otr 2007 51.0 l"'otr 2008 48.3 MW-17 (Class III) Uranium l5 2"o otr 2oo5 23.4 4"'Otr 2005 3r.2 l" Otr 2006 28.2 2"" Otr2006 32.2 3'" Otr 2006 30.6 4'" Otr 2006 30.2 l" Otr 2007 23.4 2"" otr 2007 t8.2 3'" Otr 2007 20.1 4'" Otr2007 31.0 [" Otr 2008 28.3 MW-18 (Class II) Thallium 0.5 2"" Otr 2005 r.0 4'n otr 2oo5 0.95 1" Otr 2006 t.46 2* Otr 2006 1.3 3'" Otr 2006 0.83 4* Otr 2006 r.0l l't otr 2007 1.85 2* Ott2007 NA 3'," Otr2007 0.96 4 Otr 2OO7 0.89 Uranium 7.5 2* Otr 2005 39 4'o otr 2oo5 39 t" otr 2006 42.6 2" Otr 2006 32.2 3'" Otr 2006 39.6 4'" Otr 2006 42.2 l" otr 2007 46.9 2"" otr 2007 NA 3'," Otr 2007 36.5 Manganese 200 1" otr 2oo8 154 t2 I I t I I T I I I I I T I t t I I I t Monitoring Well (Water Class)Constituent GWCL (us/L)Sample Event Sample Result (rtoll ,l MW-19 (Class II) Fluoride 1.0 (me/L)4"'Otr 2005 I (ms/L) 2"" otr 2006 I (ms/L) 3'" Otr 2006 I (ms/L) 4'" otr 2006 .3 (me/L) t" otr 2007 4 (me/L\ 2"" Qtr 2007 NA 3'" Otr 2007 1.3(ms/L) 4* Otr 2007 1.l(ms/L) l"'otr 2008 I.l(ms/L) Selenium t2.5 2"" Otr 2005 l8 4'n otr 2oo5 t2.3 1" otr 2006 14.3 2"" off 2006 t2.0 3'" Otr 2006 t2.0 4'o otr 2006 tt.2 l" otr 2007 ll.l 2"" Ofi2007 NA 3'," Otr2007 I 1.94 Otr 2007 10.8 l"'otr 2008 10.6 Thallium 0.5 4- Otr 2005 0.57 l" otr 2006 ND 2"" Oltr2006 0.7 3'o otr 2006 0.55 4"'Otr 2006 0.68 l" otr 2oo7 ND 2"" Off2007 NA 3'" Otr 2007 0.53 4'" Otr2007 0.52 l" Otr 2008 0.52 Uranium 7.5 2'" Otr 2005 I1.6 4- Otr 2005 I1.3 l"'otr 2006 12.8 2"" Otr 2006 I 1.5 3'o otr 2006 8.52 4"' Otr 2006 l0.l 1" otr 2oo7 9.37 2"" Otr2007 NA 3'" otr 2007 7.76 4^ Otr 2007 7.s3 I't otr 2008 7.32 MW-26 (Class II) Manqanese 400 l" otr 2oo5 1.350 June 2005 956 Julv 2005 1.100 Aue.2005 1.430 Seot. 2005 1.160 Oct.2005 1.410 Nov.2005 949 Dec. 2005 1.030 Jan.2006 951 t3 I t I I I t I I I T I I t I I I T t T Monitoring Well (Water Class)Constituent GWCL(usl[)Sample Event Sample Result (troll ,\ Feb. 2006 874 Mar.2006 .210 April2006 100 Mav 2006 ,280 June 2006 300 MW-26 Contd.Manganese 400 Julv. 2006 95 Aue.2006 902 Seot.2006 .330 Oct..2006 .610 Nov.2006 .500 Dec.2006 .080 Jan.2007 769 Feb.2007 979 Mar.2007 I,130 April,2007 1.410 Mav.2007 910 June,2007 1.230 Julv 2007 1.280 Aus.2007 728 Sept.2007 NS Oct.2007 1.190 Nov.2007 1.150 Dec.2007 I,410 Januarv.2008 853 Februarv 2008 1.330 March 2008 1,390 Uranium l5 l"'Otr 2005 22.4 June 2005 9.5 Julv 2005 2.6 Aus.2005 26.0 Sept.2005 17.4 Oct.2005 22.7 Nov.2005 t2.t Dec.2005 12.3 Jan.2006 10.7 Feb. 2006 9.9 Mar.2006 17.9 April2006 l4 Mav 2006 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 Ian.2007 22.6 Feb.2007 44.2 Mar.2007 42.8 April.2007 36.4 May,2007 19 June, 2007 24.5 t4 I I t t I I t t t I I t I T I I I I t Monitoring Well (W'ater Class)Constituent GWCL(rtslLl Sample Event Sample Result (rrall.) MW-26 Contd Uranium t5 Julv 2007 38.6 Auzust 2007 21.2 Seotember 2007 NS October 2007 47.0 November 2007 42.0 December 2007 47.6 January,2008 20.1 Februarv 2008 59.2 March 2008 46.3 Chloroform 35 l" otr 2oo5 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 1.200 Aoril2006 I,200 Mav 2006 I,100 June 2006 260 July,2006 7.800 Aus.2006 980 Seot.2006 1.200 Oct.2006 1.400 Nov.2006 950 Dec.2006 1,100 Jan.2007 5,700 Feb.2007 4,400 Mar.2007 I.600 Aoril.2007 2,100 Mav-2007 2.400 June. 2007 660 Julv 2007 1,100 Ausust 2007 920 September 2007 NS October 2007 820 November 2007 1.400 December 2007 1.400 January.2008 830 Februarv 2008 580 March 2008 1.300 Dichloromethane 2.5 June 2005 5.4 Aus.2005 11.0 Seot.2005 5.9 Oct.2005 9.8 Nov.2005 7.6 Dec. 2005 t2 Jan.2006 6.9 l5 I t t T t I I t I I I t I t I I T I t MonitoringWell fWater Class)Constituent GWCL (uslt,)Sample Event Sample Result (us/L) MW-26 Contd Dichloromethane 2.5 Feb. 2006 4.8 Mar.2006 4.6 April.2006 t4 Mav,2006 ll June.2006 2.5 Julv, 2006 ND Aus. 2006 T2 Seot. 2006 25 Oct..2006 3l Nov.2006 l5 Dec.,2006 2.6 Jan.2007 ND Feb.2007 25 Mar.2007 26 Aoril.2007 JJ Mav.2007 28 June.2007 3t Julv 2007 l4 Ausust 2007 9.0 September 2007 NS October 2007 1.2 November 2007 l8 December 2007 22 Ianuarv.2008 l5 Februarv 2008 l5 March 2008 Tetrahydrofuran 23 4* Otr 2005 55 Jan. 2006 ND Feb. 2006 ND Mar.2006 ND April2006 ND Mav 2006 ND June 2006 ND Julv 2006 ND Aue.2006 ND Sept.2006 ND Oct.2006 ND Nov.2006 ND Dec.2006 ND Ian.2OO7 ND Feb.2007 ND Mar.2O07 ND April.2007 ND Mav.2007 ND June.2007 ND Jrulv 2O07 ND Aueust 2007 ND September 2007 NS October 2007 ND November 2007 ND t6 t I I I I I I I I I t I I I I I T I T MonitoringWell f\ilnter Class)Constituent GWCL (us/L)Sample Event Sample Result (us1L) MW-26 Contd Tetrahydrofuran 23 December 2007 ND MW-32 Cadmium 2.5 1" Otr 2005 23.8 June 2005 1.7 Julv 2005 2.1 Aus.2005 2.75 Seot.2005 2.95 Oct.2005 2.16 Nov.2005 2.07 Dec.2005 r.0 Ian.2006 t.t4 Feb. 2006 2.32 Mar.2006 2.58 Aoril2006 2.96 Mav 2006 1.84 June 2006 0.8 Julv. 2006 3.0 Aus.2006 t.44 Sept.2006 0.96 Oct.2006 ND Nov.2006 0.9 Dec.2006 t.44 Jan.2007 3.0 Feb.2007 ND Mar.2007 2.42 April.2007 2.24 Mav.2007 6.18 June. 2007 ND Julv, 2007 2.83 Aueust.2007 1.82 Seotember 2007 t.l8 October 2007 t.20 November 2007 1.47 December 2007 t.8l January,2008 t.32 Februarv 2008 ND March 2008 1.90 Mansanese 400 l" otr 2oo5 3.740 June 2005 4.220 Julv 2005 4.720 Aus.2005 4.670 Sept. 2005 4.580 Oct.2005 4.590 Nov.2005 4.530 Dec.2005 4.340 Jan. 2006 5.090 Feb.2006 4.160 Mar.2006 s.090 Aoril2006 5.070 t7 T I T t I I T t I t I I t I T I I I I MonitoringWell {\Yater Class)Constituent GWCL fuslt,)Sample Evenf Sample Result fus/L) MW-32 Contd.Manganese 400 Mav 2006 4.840 June 2006 4.680 Julv.2006 4.s40 Aus.2006 5.160 Sept. 2006 4.690 Oct.2006 4.790 Nov.2006 4.830 Dec.2006 4.920 Ian.2007 5.040 Feb.2007 4.940 Mar.2007 4.920 Aoril.2007 5.450 Mav.2007 4.920 June,2007 5.470 Julv 2007 s490 Ausust 2007 4.820 September 2007 4.790 October 2007 5,170 November 2007 5,583 December 2007 5,050 Januarv.2008 4.950 Februarv 2008 5,010 March 2008 5.660 Nickel 50 1* 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 62.0 Dec. 2005 51.0 Jan. 2006 69.0 Feb. 2006 54.0 Mar.2006 68.0 April.2006 70.0 Mav.2006 64.0 June.2006 52 Julv 2006 74 Aue. 2006 59 Sept., 2006 53 Oct..2006 t2 Nov..2006 56 Dec.2006 62 Jan.2007 59 Feb.2007 5t Mar.2007 74 April.2007 64 Mav,2007 t27 June,2007 94 Julv 2007 85 l8 T I I t I I T I I I I I I I T I t I I 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. The most recent mapping of groundwater is for the 4th Quarter,2OOT data set. 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. 2.6.1 Field QC 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) January Sampling: -One duplicate sample of MW-32 (MW-65, ll29/08) - One trip blank provided by the Analytical Laboratory and sent with the samples received by the Analytical Laboratory on2l0ll08. b) February Sampling: -One duplicate sample of MW-32 (MW-65, 2/20108) -One trip blank provided by the Analytical Laboratory and sent with the samples received by the Analytical Laboratory on2122108. Monito.{ng\il9l1: ,, (,Wtrter Class) ',,. ,,.GIVCL .fupl[,} MW-32 Contd.Nickel 50 Ausust 2007 65 September 2007 62 October 2007 67 November 2007 57 December 2007 66 Januarv.2008 62 February 2008 59 March 2008 59 t9 20 a) b) I I I I I t I t t I I I I I I I t I t c) March Sampling: -Three duplicate samples of MW-14, MW-25 and MW-32 (MW-65, MW70 and MW-7s) - One field blank (MW-60) received by the Analytical Laboratory on3l2l/08. -Two trip blanks provided by the Analytical Laboratory and sent with the samples received by the Analytical Laboratory on 3/14108 arrd3l2ll08 . Note: A field blank was not included with the monthly sample batches but was included with the quarterly sampling. Field blanks are not required by either the GWDP or the QAP and are collected voluntarily by DUSA. These QC samples were sent blind to the Analytical Laboratory and analyzed for the same parameters as permit-required samples. 2.6.2 Analytical Laboratory OA/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 Mill's Chain of Custody and Analytical Request Record forms for each set of Analyical Results, follow the analytical results under Tabs E to G. 2.6.3 Mill OA Manager Review The Mill QA Manager, which for the purposes of this Report was DUSA's Manager of Environmental Affairs, performed three types of reviews: a determination of whether Mill sampling personnel followed Mill sampling procedures; a review of the results from the Field QC Checks; and a review of the Analytical Laboratory QA/QC analysis. The results of the QA Manager's review are discussed below. Adherence to Mill Sampling SOPs On a review of adherence by Mill personnel to the existing sampling standard operating procedures (SOPs), the QA Manager observed that QA/QC requirements established in the Groundwater Monitoring Quality Assurance Plan were being adhered to and that the SOP's were implemented. Results from field QC checks (i) January Sampling The results of duplicate QC checks for the January sampling indicated that the duplicated samples were within the Relative Percent Difference goal of 20oh (see Table 6). The information from the Laboratory QA/QC Summary Report indicates t I t I t I I I T I t I I I I I t I I 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 9.5o C, exceeding the 4o C temperature requirement. Table 6-QC Evaluation January Sampling Event Constituent Duolicate Evaluation MW-32 Dup MW-65 RPD o/o Cadmium t.32 1.58 -17.93 Iron 7920 7470 -2.35 Mansanese 4950 4920 0.61 Nickel 62 60 3.28 Gross Alpha 5.3 +/- 0.9 4.4 +l- 0.9 <2 (ii) February Sampling The results of duplicate QC checks for the February sampling indicated that the duplicated samples were within the Relative Percent Difference goal of 20o/o (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 (MW-26, Chloroform), however, in this cases the reported value was well above the re-established RL . With regard to sample receipt at the laboratory, were received by the laboratory at 0.3o C, within the 4o C tanperature requirernent. Table 7-QC Evaluation February Sampling Event Constituent fluplicate Evaluation MW-32 Dup MW-65 RPD o/o Cadmium ND 3.94 NA lron 7890 7390 6.54 Manqanese 5010 5000 0.2 Nickel 59 62 4.96 Gross Alpha 9.2 +l- 1.2 8.6 +l- 1.2 <2 (iiD March (Quarterly) Sampling The results of duplicate QC checks for the March sampling indicated two exceptions (cadmium and uranium) exceeding the Relative Percent Difference goal of 20o/o for the MW-14 duplicate and nine instances where the duplication of MW-32 yielded 2t I I I I I I I I t I t I I I I T T I T RPD's in excess of the goal for this QC parameter (bicarbonate, chloride, magnesium, potassium, sodium, cadmium, iron, manganese, copper, zinc and gross alpha). Duplication at well MW-25 (MW-70) yielded acceptable RPD values. See Table 8. In the case of the March sampling both sample sets were received at 4' C, within the limit of acceptance. Table s-QC Evaluation October gth qtr.; Sampling Event * RPD Equation for Gross Alpha Satisfied if differential analysis of reported values and counting error is <2 Constituent MW-14 MW-75 %RPD MW-25 MW-70 %RPD MW-32 MW-65 %RPD Carbonate ND ND 0 ND ND 0 ND ND 0 Bicarbonate 473 476 0.6 415 413 0.48 435 159 92.93 Calcium 500 500 0 3s3 345 2.29 s26 476 9.98 Chloride 20 20 0 32 3l 3.17 30 99 106.98 Fluoride 0.2 0.2 0 0.3 0.3 0 0.2 0.6 - 100 Masnesium 155 148 4.62 120 tt7 2.53 234 157 39.39 N itrogen-Ammonia 0.12 ND NA 0.49 0.5 -2.02 0.62 ND NA Nitrosen-Nitrate ND ND 0 ND ND 0 ND 0.1 NA Potassiurn I l.l 11.7 -5.26 9.8 9.5 3.r 1 14.9 I1.4 26.62 Sodium 332 337 t.49 306 298 2.65 233 292 22.48 Sulfate 2270 2300 -1.3t 1750 1760 -0.06 2420 2300 s.08 pH 7.72 7.81 l.l5 7.69 6.74 13.t7 6.89 7.01 t.73 TDS 3420 3s30 -3.17 2710 2630 3.0 3800 3540 11.44 Arsenic ND ND 0 ND ND 0 ND 15.2 NA Bervllium ND ND 0 ND ND 0 ND ND 0 Cadmium 0.99 t.92 -63.92 1.23 I.3t -6.3 1.90 J.JJ -54.68 Chromium ND ND 0 ND ND 0 ND ND 0 Cobalt ND ND 0 ND ND 0 5l 29 55 Copper ND ND 0 ND ND 0 ND ND 0 lron ND ND 0 ND ND 0 8370 48 197.72 Lead ND ND 0 ND ND 0 ND ND 0 Manqanese 2280 2130 6.80 l6l0 1620 0.62 5660 1490 t16.64 Mercury ND ND 0 ND ND 0 ND ND 0 Molybdenum ND ND 0 ll ND 0 il ND 0 Nickel ND ND 0 ND ND 0 59 23 87.80 Selenium ND ND 0 ND ND 0 ND ND 0 Silver ND ND 0 ND ND 0 ND ND 0 Thallium ND 0.70 NA 0.95 0.95 0 ND 0.82 NA Tin ND ND 0 ND ND 0 ND ND 0 Uranium 65.8 t32 -66.94 5.94 6.13 3.14 3.01 3.21 6.43 Vanadium ND ND 0 ND ND 0 ND ND 0 Zinc ND t3 NA ND ND 0 149 45 107.22 Gross Aloha*1.3 +l- 0.4 0.9 +/0.3 <2 1.9 +/- 0.4 1.5 +/10.4 <2 2.8 +l- 0.6 0.9 +l- 0.4 >2 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 Naphthalene ND ND 0 ND ND 0 ND ND 0 Tetrahvdrofuran ND ND 0 ND ND 0 ND ND 0 Toluene ND ND 0 ND ND 0 ND ND 0 Xylenes ND ND 0 ND ND 0 ND ND 0 22 Parameter Method Carbonate as CO3, Bicarbonate as HCO3 A23208 Calcium, magnesium, potassium, sodium, iron 8200.7 Chloride A4500-Cl B Fluoride A4500-F C Nitroeen, Ammonia as N A45OO-NH3 G Nitrogen, Nitrate + Nitrite as N E,353.2 Sulfate A4s00-so4 E TDS M54O C Metals (other than iron)E200.8 Gross Aloha E900.r VOCs sw82608 T I I I t t I I I t I I I I I t T I I In accordance with Section 10.1 of the Groundwater Monitoring Quality Assurance Plan (QAP) the cadmium and uranium for MW-14 and bicarbonate, chloride, magnesium, potassium, sodium, cadmium, iron, manganese, copper, zinc and gross alpha for MW-32 are annotated here as falling outside of the QA specification for duplicate samplings. With regard to the results for MW-14 Denison has previously initiated a process to determine the root cause for duplication difficulties through extended discussions with the Laboratory and the Denison sampling technicians. While two duplicate analyses for MW-14 were outside of the 20% RPD specification, the results of duplicate analyses for MW-25 were all within specification. With regard to well MW-32 and its duplicate MW-65, the sample technician reports that these samples were collected during very windy conditions and it is suspected that dusting in the sample area resulted in contamination of one or both of the samples during sample collection and/or duplication efforts. With the exception of the MW- 32 duplicate, Denison notes some improvement in duplicate samples. 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; and 23 I t I I I I I T t t I T t t t t I I I . 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 analytical methods were reviewed by the QA Manager. The information from the Laboratory QA/QC Summary Reports indicate that RPD and recovery data at the Laboratory were within acceptable limits. 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. However, there were ten instances (MW's 11,23,24,25,26,27,28,32,65 and 70) where the analytical holding time for TDS was not met. In addition, the holding time for measurement of pH was exceeded in five cases (MW's 11, 23,25,27 and70). In a discussion with personnel at the contract laboratory it was mentioned that these analyses were conducted during a major management and structural change, thus resulting in sample holding times being exceeded. With regard to the holding time excursions at the Laboratory, DUSA maintains that the affirmative defense is applicable in this instance. More specifically, the failure was not intentional and because the permittee does not operate the contract Laboratory, the holding times were not exceeded due to the permittee's negligence. Appropriate measures have been taken at the laboratory to avoid future exceedances of the holding time requirement. The reporting of this matter will be provided to the Executive Secretary under separate cover. (iv) A review of the Laboratory QA/QC summary reports indicated that the percent recovery and spiked duplicate results reported by the laboratory were acceptable. The QA Manager noted that samples received and accepted by the Laboratory for the January sample set were outside of the temperature specification at 9.5o C (but on ice), while all other samples sent to Energy Labs for this reporting period (February and March) were within the 4o C guidance. Samples sent to American West Analytical Laboratories (AWAL) were sent in two sets (March 2l and 26, 2008) and each of these sets exceeded the temperature specification upon arrival at the lab at 6.0 and 6.5o C, respectively. The acquisition of "5- day" coolers for sample transport subsequent to DUSA's correspondence of February 21,2008 has shown demonstrated success subsequent to that time for samples sent to Energy Labs. However, samples sent to AWAL for tetrahydofuran (THF) analyses in March did not meet the 4o C requirement. Upon discussion of this matter with sampling personnel it was discovered that for those samples sent to AWAL the 5-day coolers were not used. It was the belief of the sampling personnel that because the sample was small (due to the 24 I I T I I I I t I t I I I I t I t T I fact that the only analyte was THF) a smaller container with enough ice would suffice. With regard to the sample temperature upon arrival at the AWAL facility and the January sample sent to Energy Labs, DUSA maintains that the affirmative defense is applicable in this instance. More specifically, the failure was not intentional and sampling personnel had considered the situation opting for a smaller cooler due to sample size and a short shipping distance to the AWAL Laboratory. The January, 2008 sample sent to Energy Labs preceded DUSA's determination the 5-day coolers would be necessary for shipments sent to this laboratory. Appropriate measures have been taken at to avoid future sample tanperature problems for samples sent to the AWAL facility. Specifically, 5- day coolers will be utilized for future sample shipments to AWAL. The reporting of this matter will be provided to the Executive Secretary under separate cover. Electronic Data Files 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. 25 HYDRO GEO CHEM,INC. BOUNDARY \\\ \\ \\lroF E(/J(N /?telg\)F/i AD \s/- I <{f' \ \\ il t/ l/ CELL NO. 1 /ttrlrtt,l; l1 l1 ^jl 1l 1l gl 1l 1l 1l 1l 1l gl 1l gl 1l 1l 1l 1l 1l CELL NO. 4A // /t// --i// --t-' l[ '" \l ll\\\ T38S. ,ilr-r, tl ll \\t\MW-20a\\\\ a:-4i,// --=-.:--'=-:-'=--=-..:--'=-.:.:-- ::_-_V \ MW-22o SITE PLAN AND PERCHED WELL LOCATIONS WHITE MESA SITE o PaEZ-le iiw-31+ rw{.20+ TW4-23 N I 0 3000 SCALE lN FEET EXPLANATION perched monitoring well temporary perched monitoring well perched piezometer perched monitoring well installed April, 2005 temporary perched monitoring well installed April,2005 new temporary perched monitoring well installed May,20O7 (locations approximate) \\_z f wiElife nond Mill - Gromdwaer Discharge Fermit Groundwater Monitoring Quality Assurance Plan (QAP) ATTACEMEN?l III@TTE MESA URANIE]M M!N,L Description of SamPlkg Datili 2.25.07 Revision: 2 Page40ota,l Location(weuname) lt{d t ' ffff#.* iaats i\ya^, P*L-<,rt /' P. Date andTirne torRrryryiin1 3 ' Vi ' O N and Sampling (if different) .- Wellpurginge+ripUsed, l$ump or-bailer Well Pump (if otrer *ar},eruI"DQEL- SamptingEven Wctl.sarnded inSarryline5venti2J'L$ I Specific Conductance ?. ?.-u&EfOSlq$ .'i..';' o WectherCon a.-$+<!,, . - .. f*t t,A*U,i6Tp,,,1 ortosampling "verrrlil-'Q- Depth to UfaftrBefore P* 'g1-;b+ { CasingVolume (V) 4'Well rctii;Rrigeo-3.,S,, - "n 1.bq ' r"*pu*a* 13 ,31 -Redo.x?otenti ri @$ &3-s21 ,r*i*rry , .S- W conductance l'7 52 e.,.raors,,u l? l1- * v.13 - t"*pro* l{' {9 - RedoxPotentiilW) LIW ' . A,r* - -z'?'7'' t-ji ?-o temperature l,S. / / RedoxPotenti ,tW--!4 -/g a"sb RedoiPotential (E$i=l I IJ T, i'',:, ' :.::tr: l*' Mill - Groimrlwater Oircharge Pee'mit CrorcdvaffiMoaitoring Quality Assurance Plan (QAP) DatE: tL.0.A6 X'].Pvisioa I Page4Lof 41 I t I I I I I T Volame of WaterParged Whe,n FieldParasrcters areMeasure d . <VJ Pumpins Rate Calqula$on FlowP.ale(Q), inpm-S/@= =-- ,.5E Time to evasuate ryg oashg volumes (2V) T=ZV\O= f / 7 Numberof casingvolumesevacuated (if otherthan two) -l ' ffwell "vocrufrd tr,6m"*, aumbuof galtonsevacuated -.-a/ NameofCertifiedAnalfiical lxboratoryif ot&erfiran Y*rWt:fis [/At :t SrJ d,4*.iu* u"<r LJ TsDeof Samole Ssih'b& TikIu G!!{e}.. Eitrbrrd(d;ili)&neged@Sw4dded VOCs @'"N 3140iri{Y (I\D HCL (lr) NilifririeilsYSPr00dIYNI[,SOI' Y N HdCtvMetals iDN zs0ffiI'',. ..TN IIN(} Tg hIAII Other Non- Rerliolorica YGD 25OirilI Y-N NoPreseruatiwA.dded :GnossAlohs YW 1.000mI YN ELSO. Y N Other(specify)Y@l Samplevoluue YN If apreuervative is use{ Speqf.yTWpryd Quantity of Pteservotive: I t t t T I I t I I I I T I I t I :I t Locarion(weuname) /r{h;3 ' i;ffilila- is*, l?Va^,, 0*/qa ' A P- Date and Time forPurging <'-tLhK *dsampling (ifdifferen0 Welt Purging F4uii Userft ;{rump or -baiter .Wcll Pump (if other than n*o*>Qd- . lwcllSampled in Sampling n "ot-f'nQ'- | p*I.B,.g$9r-{O {o SpocificConAuctance-Ll -ulvLtoSlcu Warcsal|,,,., 7 Exf'l-Airlb;.'iimp.(priortosamplingevent-ZZ:L .;l Mill - Grormdwater Discharge Perrnit 0roundumter Moaimriog Quality Assurarce Plan (QAP) Description of SamplingBvest: lv *ate:2.25.A7 Revisioa:2' Page40of4l ATT'A.Cmi/ryIllT,l (".;' j WeritherCond- WHXTE MESA URANTUM MI[,T, ?-o Gal.hirged---- . --coou,i"turo <S76.f e,,;Au"raa*. ,, ,r97 ZS l , . ,,, prl Redo-xPotensat AAl RedoxPoetrtid (tut .€ Og rr*iairy , 37 r*ixry A Conductasce- ,* b.71 p Temperaure , RedoxPotential (Eh)-t:j r"'p"**--lAEj t"rpr**. i4 ,5f {"orb t I I T I I I I I T T I : ri Volume of lfiIarer Rnged When Field parameters are Measure OL Pumping Rata Calculation ElomrRate (Q), ingpn.$/60= ;--. 3 3 Number ofcasing volumes evacuafed (if other than ttro)_, --- _ If well evasrated !o r&]fiteser numberof gallons evacriatfr_-5--_ NameofcmtifiedAnalyticalLaboiarorriforh€r'innw-aergt*s {az: 5 *-r s-, - ,4,..;r; ,-.f Mll-GrowdwatryDischargaPeEair Datq lL.l7.G6 Feuisioa I &ouadumtuMaaitonag Qinlity .Asaurace Plaa (QAF) T'urbiditv - Fage4tr of41 Time to evasuab tvo casiqg voluues (2y") 7 =2y1q= -1A_r4,-\^__ Tveeof Sammle Fllbred (eiicle)Freseivadse Added,(drelet "7..-r.-l YOCg tr/ "N 31i40iiit'r 16ll rr HCX. (y' N$tutflents Y6P I00ht YN IIIS-O1 Y NEeAnyUIetaIgr.]/*w aiotril..T)N ND.. NAll Other Non- Radioloeics vw 2561iil Y'N NoPrtNervadveAddd ,Gross Alpha Y6 1.gA ml YN HzSO" Y NCIher(specify)Y (JP Sampl6volume IY N If a pesernative is used, S@ryTrrpeaqd Quantityofkseryative: T I I I I I I I I I I I T I T I I I I Mill - Crroundvrater Discharge Permif Groundwater Monitoriag Qualiry Assurance Plar (QAP) Description of Sampling Date: 2.25.O7 Revisioa: 2 Fage4Oof4l Location(wellname)-lr14rr.J .S . m'il, ;ninar@p. Dats and Time forPurging .3 ' t A . A { und Sampling (if differenO -welt Purging Equip used ppump or -baiter Weil pump (if other tiran nenne0J2dj_ sampliog Even tilua* r \ h,/ .,, -, 'dAii prqv. well sampled in samplinghvent-MdJ2 plfrButterT.a-Z!-A plhutferl.0 ' ?.O Specific conductance-f3_ulhlos/cm Well DepthtoW'aterBefore p*erre /y'd . 37 CasinsVotume {v}4,Wil,W-dF 7.:5;f) Condu0rairce (avg) Wett IilaierTe *p. (^ve)J 3 2_ Wedther Con a.-Bql - - Extlt -Amb. Temp.(prior to sampting eve *I_J_LL L_, prrir ,aerOrr,1'P";l' 11* ''j '11.. nea6x poten tiai (iiAtZK furbidity ft . 7 RedoxPotential (Eh) Redoxpotential (EDL r*aiaiq---J-L-L **rorry ).4L * nH 7.2 [ t"^p"**" I Z- ?0 RedoxPotenti ^l{r{s-?F{ -- Redoxporenri a\na, t{9? - caodttctawe 2*:17 - pa 4-0L t" prrow" 13,4 f*u conau"ti,nu Zf, 97 t . z\-.rr t'-S r' T"*p"rotu.u 13'Z S enoau"tn"" 2i 8L pn 7.j& - a?T'acml@hr{'x WMTE MF,SA, IIR,ENTUM MTI,N, $?E[,D X]ATA, WORK$HEETEOE{ GROUND WAT&R Gal. Purged_37-75_ t,10 C*.s 1.ZW Mill - Grouadwater Disc&arge Permit Crroundwater Monitoiiqg Quoliry Assurerce Plan (QAP) Date: lL.fi.AG Revisioa: I Page4l ai41 ?urbirhty. = . Turbidity. Volume of, WaterPnrged When Field paramerers **M**eL Pump_ias Rate. Calculation FlowP"atre (Q), inpm.Time to evacuate two casr4g volurnss (2V)T=ZYIQ= I ?-S *i* I{umber of casing volumes evacuated (if other than t*o}_lrz_U If well evacuated Eo dr5ness, numberofga,oru "u***, . F Name of Cedified -Analytical Laboratoryif other Than Energy t^u"Mvtr^r€ Tr**f Tvpeof$ample Sairilnle Taken(t{Fdc) , Eit$ered (circlc)Pres.ewative ^Added(circte) 'voc @N 3i40ml Y@) --E{C[" qD NNirtrientsY(N I0OmI YN II"SO4 Y NE*iwMetals ?ry> N zs{}iiil.TV S'Iq d) NAII Other Non- Radiolocics v@ 250dI YN NoPreservative Aitded .GrossAlpha Y rtri/I.truU trilI YN lIzSOa y NL'ulert8pecrIy, F^'' \.'b, ; .fr gN c- lYvolune YdE 6) lf a prcservative is use4 SpecifyTypeaad Quaatity of $eservative: T I I I I I I I I T I I I I I I T MilI - Gromdumter Discharge Perrait Grounrlwater Monito'riag Quality Assurance Plan (QAP) FMT,D DATA Description of Sampling Date: 2.25.M Revision: 2 Page40of 41 aTT'ACSMEMX WffiT?E MESA E,R/TN{E[,M MILT, 3 Location(weltname) ,'r,^-, ll iffiX, initat" 4*u hA,,o Qp. DateandTimeforPurging 7. t * .O Z and Sampline6fdifferent) -I well PurgingEquip used: Xpump or-bailer wcil pump (if other than Benne0l2Et\_ Sampling Eve "te*r-'r-+. l<ru,"/,,',A Prev., Wet! Sampled in Sampling Ev€ntJbl^.l -f p[Butrer7.A 7.0 _oHBuffer4.0 ? t-l - .: Well Deoth I 30SpecificConauctance 4 ? pthloStcm Depth to wate fieforepurling-lL?L - casing vorume (v) 4, wett ZLl ?_(axa) . :l" ' weather cord-- -::-----=-. Extrr,Amb. T6mp(prior to sampring eve fi)_l2 :L g*a*r^nfu ,, 7.67 rempmtun 11,0? Redox Potential (Eh).,:{ d RedoxPoteuria<nfi 311 ,*r*r, 2. N conductance 2L 33 - pu 9.1 - t"rp"on* lc{,5 8 RedoxPooenti atW crodurt*, W ZfW n /::'.l. "'i f"-prrutur"-..:H. { 3 I,gl {,il,2tU RedoxPotenriat gA NWW 3'71 Mill - GroundraaterDischarge.Ferrait Grouodnmfsl }dotrihriag Quality Assurace Plas (QAP) Darq 11.17.06 Revisiou I Fap4i of4l Tcrbidity '-- ?grbidiry Volume of Water Purged Pumpine Rate Calcdation FIow Rate (Q), in gpm- - -- Time to evacua[e two casing vorumes (2v)s/6o= =-',33 . ilr"A=fu Ilurnber of caeing volumes evacuared (if orher w*t*$_!:*Y OV If well evacuaEd to drymess, number of gallous evaeuate.{__ --_ NameofcertifiedAralyticatl-aboratory.ifotherfirauEnergy *r, -r.* d rt ^Oa* 4 -S-ucr*- fi--f Tlnse ofSameple Sgirir,Ue TFkEll(tiitl6),r. Sriitoiila.Volme (tuilirinfllfirtlier fil,e"d (cirde)Presersrative Added (eircle)iffi,AEaE;d kiloe) VOCg )N 3:i40ml Y6F HCr, (f NNuttientsNIfi)unl YGtr Ez$oa A NECawMetakNz50iiil, _@N ENG CT NAII Ot&er Non- Radiologics 6N 25AtriI 52- N NoPrreservative Added GrossAlpha N I,000 mI tyN HFSO* & N,Other(specfy)'tdMW 0N JSamplevolume Yry If a preservative is used, Spec@Typ aqd Quantity of Pfeserrarive: Conductance . 9q 9? ps S "bL 1 T I I T I t I I t T T I T t t I T I I MilI - Gromduater Discharge perinit Groundwater Monitorfug Quality Assurance Plan (QAF) Deseription of Samplirg RedoxPotential'fEh S 70 ,-) ATurbidity---_): 4 1 Date: 2.25.O7 Revisioa: 2 Page4Sof 4l Locarion (weilnane) tvtt) tz iffil'ilo inia*r 4o^r D*u^*"2 Ap. Date andTimeforPurging ? . lk.Atr and Sarnpling(ifdiff"rrt)- Well PurgingEquip Used z$ump or_baiter WeU fump (if orher tfran eennefl /fEA__ SamplingEvent0 *,, \ h ,, .,,i..fi.prqv.u/-e!sampledinsamplingEvelnti1gtffuS p1BffierZ.O 7.() , .,,pg-8ff.91.+.0,,,. : ?.0 _ SpecificConAuctan""Z?-r4fuiOslcqr WelDepn Depth to WaterBefore pwstne-Uk lj_ Casing Volume (y) +" wert: /f. /? y (.essn) cond{cftince (*el%,, .plr,-1'orrr,1"t'k -,1'''o] Well WaterTe rlrp. (^v$JZZL- t ".Bga;Ibo*n*Ll gAlfurrr*iaity Z.LS :": ""' cWeatherCond. -:, r-xt{,-Amb,iemp,(prio:tosamplingeventl__0__El_ 4tsptl : j)- -%remwtatrc-|Z-Zl L3.Y: (:' RedoxPotential (Hi 5,?0 Turtiaity-- ?:?.'-S cooauaurn JTL| cordu.tun""-3&75 ,s___EE6 t"rrp"rat r" / 3. &5 { .' j\*j' lrt+ ATTA.CMWENT'X T4/M3E MESA E'ET.AIqI{.IM MTL[, FIES,D BA,T,A WORKfiffiET FOR G[rOtrIND WATER Redox Potentia t W-flL , - Redox porenrial (Eh) lvt$ I 2"2{ Mill - Grouadwaer Discharye Fermit Crouaduater ldoaiOring Qualiiy Assurauce Plan (QAP) Da!e: 11.17.06 Reyision: I Fagt4lot4,1 Volumeof Waterfugd Euuupj! s8ate ealculation flowRate (Q), in gpm. .- - Time to evacuate two c.asiag volumes (2V1s/60= =..--.33 i:;ia':W Number of caeing volumes erracuaed (if other than two)__-_ ff well evacuatpd to drynees, number of gallons evacuatey'__-__ Name of cettified Analytical r*boratoryif other Than Euergy Labstbs4ne <*rd _Va{s S*tf4 -Sa,+a*? r4err /*ls TynsofSaqnple Sqitrle Taken (tfitld)'r Fil,gered(dssld Preserratise$dded (cfuclc) ,VOCg @'N 3x40riit'y6Dt hhreieaf fiu, (L NYNI00.mI lY N -&$oa .Y N[IeaWMetals -&) N zsgfrI,. , Vg N ETI\TL ia^'All Other Non- Itadioloeics YN 25OEil Y"N NoPreserirative Added Gross Aliha YN 1,0{X} ml YN HrSOr y NOther(speci$)YN Samplevofume l" N If a preservative is rxe4 Spgqify,Typeand Quantity of freservative: T I I I I T t I I T I I t I t I I T I Mill - Groundunter Discharge Fermit GrourlwataMonibring Quality Assurance Plan (Q.4P) SreE,DBA?'A Description of Sampling Even t:_J z Date: 2.25-07 Revision: 2 Page40of 41 a7T'A,C&Ir@hrn'n I4ffi[?@ MESA. UR.qNEI'M IWM,L GBOUI{D WATEIT Locarion (wettnatne)-tMr.-t l{ ffi:'h ur6rW {.P. DaE andrimeforPurging 3' I 7 - 0 Y wrdsampring(ifdifferent) . lVellPurgingEquipUse* &*p or_baiter Weil pump (if otrlerthan g"*r\hd sampting,ven (l^ono t, (r* -brpv. w-eJ! s.4rypred in sampring G* pIIBufFer 7.0.?-o Specific ConductancejZ_nntfO, fcm W-"ll,D.qpth f*AiAiry-::Za e/Doaurt*n'>1 0n conaurance Z8-g{ o* b,t4 -f"rpr*t* I Y, l[ RedoxPotenti rtfW62l -RsdoxPoten rirtW, 5Z{ ' - RedorPotentiur1rD S:e7 ( {a r"*p.rutu*- J-{- d E t"*p"** ltl ,0 {e -dtJ uob :L7 Mi[ - Grflmdwats Discbarge Feemit Grounduater Monirbri4g Qualiry Arsuraace PIan (QAP) 5/60= =- ,33 Date: Ll.fi.A6 F.evilioa: I Page,Al a€ a"l ?rrbiclify------ __ l Volume of WamrPurged When Field parameters areMeasu rdfu Ptrrqpine Rafe Calcnlation FlowRate (Q), ingpm.Jrryjg.gvae*Bw casirg votumes (2V)T=ZY[Q= 7 4 ,a^,,u Number of casiog volumes evacuated (if oher than fwo) Ifwellevacuatdtodqmess,numberofgaltonsevaeuated ...-,. _\ NameofcertifiedAnalytieallaborafory'iforrreru-,-ro"rg, 'ud,J" I/or. ,S "-/ fr _ ,&uorir--1^rer.r [-/; TVpeof$aqqte Saiilible ?'ikbb (oiirll6)' Filtered fuIrcIe) Freeeivative.lldded (di6le) '.:j+,. j vocs $)"N'3n40il'"y c\tJ ,,ncL (&1 NIYuIflEn S I],N t00iiil Y ItrS.O4 NEedW&Ietats N zsOIiiI,. "y)N Hl{O" r9. NAtl' Other Non, Radioloeics gN 250mI : .li E)N NoPreserv&dve A.ddBd .GrocsAlbha WN 1.fi)0mt UN lIzSOa (Et Nut:rcr(specry) bt*r,-AE,o.* uN Y@ @ If a preservative is uee{ Spes$Typ*e+d Quantity of P.rcservative: --:T t I I I I T I I t I I I t I I I I I I &Iill - Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) Date: 2.25.4T Revision: 2 Page40of4l aT"aaE[ldEry?'n WEflITE MESA E'[TAM{,IM MXI.N, ETE{,D DATA WOITX{SHM.T'FOR GROUND WATEP( Description of SamplingEve*: I ?r' As"o,r-rrt hp*-n,/,,,nrt - il##,. ntiats 4^^t Pal,,*a frF Date and Time for Purging 9 ' il , q t. _trd Sampling (if differcnt) -? * - b. lvellPurgingEquipuse& Ipumpor.-bailer weflpump(ifother thanBemetilb/tLtfu/ €ELA Sampling Even r A il fret /qnwl rArE Grel.Wc.tt sampled in Sampling Eve nt-A/-A- pHButferT.o-? aQ pflvr/rrer +.a-:f, O @-Specific Conductance-Ll -uMHOS/cm W"U n"ptf , / 3 7 - Depth to water Before rurgtne ) 14 .7 { casing votume (v) 4" wet /Z f,-? 7 (as*) 3" Well:_(.367h)-plf ofWaterftvg) -<. 7 \[ellWaterTemp.(^oE)-J:;.ff5- .'Redo;PotentiarfnO566uiatty - SL I WeatherCond. CLur, S,a ExflAmb.Temp.(priorosamplingeve$-Z-L) conArr,xo, . ?ZS.L I -pH S-.s.( T"mp"rutre Iak Titrbidity "ss Turbidity .3f t"*p"o* .\ 3' 85 'tr p"*arn l 3.g b' RedoxPotential(Eh)fu Redoxporenrial aal 3!fl - ' RedoxPotentjal(Eh)fu Redoxpotential (Eh) .S{7 . (:, , \! pg Tr*wro*, /3. 73 f ,.:{i -f-**5 .36 Mill - &.ounduaterDischarge Pernoir Groundwater Monitoriag Quality Assumuce Plar (QAF) Daae: LL.l7-06 Revisioa: I Volume of WaterPrugedS/hen Field paramercrs aret I I I I I Pumprng Rate_ealggletion FlowRaie (Q), ingpm.St6O= -=. -' . * LAn Time to evacuats two casing volumes (2V) T =ZVte= .{/ q n;,/. thaatwo)--(V4- lf well evacuated to dr5mess, number of, galloas evacurfcel__M_ Name of certifiedAnalyticalLaboratory'if otherTrran EnergyLabs .- I I TYna of Sample SelirDle TakE (ciitle), F'ilterqd (circle)Fresewafive.Added. (eirde) voch Y /N)3x40 rhl YN5 HCL YNNuEientsY@l00EIYNHrSO4 Y NHeawMetals&N 250tut 9N Hl\tor -Rb NAII Other Non- Radiolocies Y6p 25Oml y'N NoPreservative Addcd Gross Alpha Yd I.00O trrI YN IITSOa Y NOther (specify)Y@y Samplevoluue YN If apresewative is use4 SpecifyTypeand Quantity of Preservative: I I T I T T I I I t I t I t T I t I t Mill - Groundwater Discharge Peirnit Groundwater Monitorfug Quality Assurance Plan (QAP) Date: 2.25 ^07 Revision: 2 Page40ot4t Description of Sampliog Event: Locarion (wen name) /4a/ I ? . irffiX'llo *,0 Date and Time forPurging E. t 2 . trE and Sampling (if different) 4A _ -_ Well PurgingEquip Used: d-pump or-bailer Well pump (if ottrer than Berne0))e)tbr{ S ampl ing Ev ent Lrl u a tr-s e Pren Well Sampled in SamplingEvent_At lL plluffer7.0-J-:O pHBuffer4.Q specific conauctmce4,Z -ulfurosrcm W"Unrptrr, /l Z Depth to Water Before Vwgtne 7 ?, I B . Casing Volume (V) 4" Wey. 7 2 - 0 g y L6S3h) Conductancef"rgl , p,Eofplter ruurrl!fr lVell Water Temp. (arg)-135-nia;ii"on,i'itfu5l3rm ,or* . f0 weather con a-lw-l3a,t-- Ext'l Amb. Temp.(prior to sampling even a-J:A:L conooct*"" t.{d.S- -- conauct*ee L/4X? - t_pn 5.r: , w f,CI?_ Temperahre JZ. {5 T"*p"rutuo lS.f Z _ RedoxPotential(Eh) r5 23.- Redoxpotential (Eh) -t0? r*aialq '3O T*bidiry cood,rrtrrr, 4l?L cooau"r*o ?f/Z PH 6. 03 t" pr Arr" t! fr RedoxPotentiaf fgh gd{Redox Potential (Eh)_ 0ra (..... ' A?'TACITMEFIT1 WE{I?E MESA {'RAhIE{'M MWg- {*'L -{c{ t-,j I I I I I T I I I T I I Mll - Grouadwarier Djscharge Pernit GmunduaterMonibring Quality Assuraace PIan (QAP) Date: 11.17.05 Revision: I Page(l ot4t Trrrbidit]1 Volume of Water Furged @ dL P_ung_ing Rate Calculation FlowRate (Q), ingpm-s/60= = , 33 Time to evacuate two casing volumes (2V) T =2YtQ= -l "3 Number of casing volumes evacuaied (if other than t*o) If well evacuated to dr;mess, numberof gallonsevwuated_Z& Name of c.ertified Analyticat Laboratoryif otherrhan Bnergylabs .<,, a . I I I I Tyne of,Samole Saihule Talken (e!Fd6l, SamrileVolome - findcateif iitlier F'iltered (circlel Frcserwative Adrled (eirble)'tlitfii'tiii soecltied tielo*I 1;i,-i,. VOCs YN)3x4OmI xNi ECI,YNNutrientsYN)I00mI /YN I{zSO+ Y NHeawMctals_6) -N 25tfr1 /U)N I[{-q @ lrAll Other Non- Radioloeics Yry 25Or,l /Y'N No Prreservative Added GrossAlpha YA(l-O0Oml I{zSOa Y NOther (specify)Y@ uamPlevolume YN If a prcserrrative is used, SpecifyTypE and Quantity of Preservative: I I I T T T T T T I T T I I t I I I I Mill - Groundwater Dischaige Fenait Groundwater Monitoring Quality Assurance Plan (QAP) F'EET,DDAT Date: 2.25.O7 Revision: 2 Page44of 4l ATTACEIMEAIT i WFTNTE MESA E]RAhIM'M MIT,L Description of Sampling Locarion (weunamq fh{ I y ,- . iffil*a- r*rrQVr^t l*/r*rt /A Date and Tim eforPwgng.$.:JLA/_and Sampting (if differenr) ---- WellPurgingEquipUse* r&umpor-taiter WettPump(if other tUwroe*"o Oib /e/rc.H /L Sampling n** Qt, , q h Lrt. ^r/r@Wett Sampted in Sampting avent &l4lf pnaurc:rt.o -a 4' frsffier+.0 4 d Specific Crnautance .LL ,frfuOsam WetqOepth l3 / Depth to WaterBefore Yurgtne V ?- VO Casing Votume N) +,'Wett:{lJ2?.87 (6SZn) conductance Argfu p$ .ry Or*r1{jh* weult/arerTemp.frrgl-l-{._?__ t .'neroipotentiai(Eh) glruruiaity l, I ( Wedther Con A C/: , I , 3 Exf.t Amb. t"*p 1prio, to sampling evenO-/$ :g c-nnauctan"e-- E6?7 w s.[6 ' r"*p"*n* /f'l3 , Redox Potentia feD-C-d-f-- coouu"tlri"" F/SZ , p}r 'tr pr*t*, - 11, lL - RedoxPoren,iafet) I &/ .bL T ime:-ljllL c at. Y ur sedJ!.B (_ cordu"tn"" 31,5,j PH .R::-!'1 ' , t"*p"*t * Redox Potential Time:/:tIS- Gal. Purged.-"&(*3- conau'r*u 32.7L pru 5,8L .,u bdTemperahre I I. RCdox Potential (Eh) {,*t \_=;, I I T I I T I T Mill - Grouadwata. Discharge permir &'oundvraEr Moartoring Qualify Assurauce Plar (QAP) Datq ll.17-06 Revisioa: I Page(l of41 Turbidity N/+Turbiditv A/ E- Volume of WaterPurged fi&es#i@ d_SZ. L Name of certified Anatyticar Laboratory"if otherThan Energylabs ,, d+. _ FlowRate (Q), ingpm.5/60= =- ,3*3 Pumpine RpSB Calculation Time to evacuate two casing volumes (2V) T =}vtQ= t tl 2 Number of casing volumes evacuated (if other than ffwell evacuated to dr5mess, nuuberof gallons eyacuate d*_* 4__ T I ?vpeof'Sample Saimnle Taken (arirle) SamrileYqhrc (liiaficateif 0ther E'!Itered (circle) Freseryative Aclded(circle)flttiri iis sDectfied - b6low) voG Y (N)3x40ml YN IIfT. v r.i-Nutrients Y&l(Xlml YhI Ida$or Y- NIldavyMetalsfi)N 250ftI.YNAII Other Non- Radiolosies rur 6/NYOY25OmIY-N Noheservative Added- 'GmssAIph4 Y-d I,00Olnl YI\I $zSOc Y NOther (speci&)Y6)SqmFlevolume IN Ifa prcservative is use{ SpecifyTlpe aod Quantity of Preservative: T I I I I T I I t I I I I t I I t I I Mill - Groundwater Discharge Ferrnit Grourdwater Monitoring Quality Assurance PIan (QAP) Date: 2-25.07 Revision: 2 Page40of41, aTT4,AEMENT r WEIH?E MESA IJRAMTIM MXI.T, Date andTime forPurging S. lt. O { . andsampling (if different) .4 4 _ -N Well Purging Equip UsedArurnp or -baiter Well Pump (if othe r *an}etureti)sLiail ?Eb insamplingBventfrNlL{ 4.o Deptlr to WaterBeforep""e,rg-E$Je Casing votume N) q" wett:JLLgfur(As:tli) Conductance t"ugl Well Water Te ^p. (n e)-J!$yK weathercon Extzl'Amb.remp.lpriortosamplingeve.rr-ffiSc conduciance ls?f pH . 5.76 - ov t"rrp".on* /3. 88 r"*pe*t*" .- / ?, // RedoxPotential(Ehl--dJ 8-- Redoxporenrirl (Eh) 4J Z rrrrbidi1--/ ' 3 g.ru*iaitv---- 3 ? conouctance / Y-( / conauaance 13 4.7 n 0,1/ - pH [17 - Temperalure {tl. t I Redox Potential Ceh)L Redox Potential feh) 5 3 / - FTEI,D DATA WORE$ETEET FOR DescriptionofSamplingEve*: 19{ fi,,o oorL I Location (wettnane) fht.l I ? ff#il. . Well Sampled pHArtu l.A . 7,t pHBuffer4.0. Specific Conductance-L I -ulvfoos/cm Well Deoth I '11 - 3")Vell: (.36Th) pHofVdter(avg).lr.tS neooiiot itiuiGnsls*u idiry, 6/ { t."' /{ t"i t I t I I I I I I I t I I I I T IVEII - GrouadwateDischErge Pereit Groundmnter lVloaitoriag Quality ^Ass uraace Plan (QAP) Turbidifi A* Date: 1t-1206 Revision: I Page4t ot41 ?u{bidity Volumeof WatorPurgeA 7/ Pumpine Ratq C..alc ulation FlowP,ate (Q), ingpm.3160= =- - JJ Time to ev8cuate two cIsing volume.s (2V)T=2YtQ= ,3L? Nnmber of casiag volumes evacuated (if other th*t*o) ff well evacuated !o dr5mess, number of ga llow evauntefl__ a__//1! NameofCertifiedAnagticalLaboratory if0therThanEnergy l-abs ? a, Tvpeaf SFmple Satirnle Tdltaii' (+iii,,r&), Sririrdle Volumefidrtffi IIIItered (circle)Freserv'ative Sdded (eircle) tHdtr:ds spliified below) VOCs'Y 3x4Oml YN HCL' Y NNutrientsY AI)10Oml YN IIzSOa Y NEte&WMetats ryN 250frr ry) N'ITNO3 O NAIt Other Non- R:idiolocics YN 25Oml Y"N NoPreservativs tdded GmssAlpha Y@ I,fi)0 mI YN H2SO4 Y NUtnEr(spcctty)LY) N ;lu,r,ulot*".Y6p @ Ifa prescrvative is use4 SpecifyTlrye and Quantity of Presenratiye: t I I I t I I I I I t I I I I t T I I Mill - Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) Date: 2.25.07 Revision: 2 Page40of 4l ArracEmdENT.r WMTE MESA ['R,{M['M MTX,I, FryELD B4.TA WORKSffiET FOR GROUI{P WA?ER DescriptionofSampliagEve*: I >f Qru_o i=2._ .. /nLannAat*>,A Locarion(wellname) trilru l5 iffiX, aitia, 4a^r D^*.^rrzAp. Date and Time forPurging -? . ] tr . O y _anasampling (if different) 1 welt Purging Eqrilp usea /pump or bairer we[ nrmp (if orher ttran nenne0d6l_ samplingEven&, .-e\ hr, . , ,l pley.welrsampledinsamprin ghvent 4/* pttButrer7.0-!11 p11s1 ..*n,,, ' ?0 : SpeeificConauctance-LZ-ulriEOS/cm !ff"4 p"ptn Depth towaierBefore v*errE-lLt q ?-casingvorume (v)4,' weil: // ? T (.6s3h) werl 1ilaier rem p. Au elJlAZ- r/ln?weather conaClear-(o4-- Extr[Amb: Temp.(prior io sampling event)J0 tL_ .1..: 3"Well: (.367h) pHoJWriter(urg... .S- P -..,'. , 1.1t,, ' - .--' .r, -/Rirdoi Potentiai (ph)Sraurbidity 5. I S Trttbrdiry---!.-H-- coauance. ,3 b 8.3 crnaucan"e 3tBf pn 5.77 Temperanre //.(( - RedoxPotentiaf fPf,l 5??Redox Potential (ED g f{ ' Redox Potential (Eh) re*perutore .J 7- V 7 Redox Potential CD-q 5fZ- ptl---S-, ?Ef 4"1.,€b {*b I z1 t*;; I I T t I I I I I I I I I I I I I t I Mll - Grouadwater Discharge Perrair Groundwater Monitoriag Quality Assuraace PIas (QAg TurbiditS4 Date: 11.17.05 Rpvisioa: I ?age41 of4t ?urbidity Voltune of Water Pruged Il&en Field Farameters are Measuredfu Fumpin g Rate Calcnlation FlowRab(Q),ingpn. ,5/60= = --..33 Number of casing volumes wacuatcd (if ofher tlran two)_=-=.__ If well evacuated to drymess, number of gallous evacuated_____-_ Name of Certified Analytical LaboratorJriF Other Than Energy Labq S-u*n- Time to evecuatB [wo casing volumes (2V)I =ZYIQ= 7[ a, .t -fuc-r, \*Jf-;J- -L-fu. Tvpsof$amnle Saiihple Takerr (diicl6)., Eil&red (circle) Preqervnfive.fulded (cifde) VOCs C,)N 3x4OmI Y HCI,7N:Nutsieie IbN lOOml Y00 IIzSOT M NHeaw IItIetaIs 'wN zsft.tut..(D N:IINOr (S NAII Other Non- Rndiolopicle @N 25Afrt 02' N - 11 h NoPrrservatira Added GmssAlpha l9-- N 1,000 El l{y, w HaSOc - Ul Nut,ner(8pec[y) brorr-l Etr,, WN 6 Samplivolume Y6D @ If a prcservatirre is use{ Speciffllpeaad Quantity of PresenrativE: t I I I I t I I I I I t I T T I I I t Mill - Groundwater Discharge Permir Groundwater Monitoring Quality Assurance Plan (QAP) TTET,DBATA Description of Sampling Darei 2,25.07 Revision: 2 Page40of4l a?TAcffi4pryq 1 WE{ITE MESA. I'RAhIIUM MIN,L Location(weuname)ll\[tr Ztl . mJil. r*u^r"4VA^, Wr*N.!. Date and Time forPurging and Sampling (if different). lVell PurgingEquip Usea: &ump:or-baiter Well pump (if other **e"*"tl 1ftLlg{et/ SamplingEvent Prev. Well Sampled in SamplingEvefi lu/N Z{ pHBuffer7.0.p1Bffierq.o*--' 9. 0 Speeific Conductance 4, P ul!foIos/cm WelD"pth ) ? O Depth to WaterBefore Purgin g il { 13 Casing Volume N) q weilS. I Kd $Sln) 3" Well:___J.367h) Conductance (avg) --pII o{:!tr61gy ' ,.t:WellWaterTemp.(avC)- RedoxPotential(Eh)-Turbidity Wedther ConO. :: Er(t1t-Amb. Temp.(prior to sampling e venf)JZL. Time:-!:LitD-GaLeurga. fuLrLlhf Time:_- cur. rrrE"a. -_cordort*"" .9f VL conduetririce . z - oH ['.{s L (.r KW€I Redox Potent iat @a) -931-Redox Potential (Eh)_ t'rgUiOity corat*ance 4{63 conductance- IpH [.?? - pH , . t"mp"ran r" /{' !1.{ . Temperarre- t_r; I Redox Potential (Eh)- I I I I t t I Mill - Grouadwater Discharge Permit GroundunfrMoaiodng Quality Assuraace Plar (QAP) Date: 1t.17.06 Revisiou I Page{l of41 Turbidity*-L&.- Volume of 'Water Pruged When Field paramefers are ?, umpinF Rqte 9alculation FlowRate(Q), inepn5/60= =--,33 Time to evacuate two casing volumes (2V)T=2YtQ= l4 *,a,at Number of casing volumes evacuated (if o&er than two)_ /tJ_A If well ecacuated to dr;mess, nrmber of gallons ovacuate_fl___gZ11l _t I I I T T NameofCertifisdAnalyticall-aboratoryifotherfiranUaeryyt-abs / ,<# {/O;( *,, -Slleral€ Vc.vT ?\sele of Saqple Sahiile Trkg! {giide) Eiltered (circle) FrryeryagveAdrlgl (eitqe) VOCs /N 3x40mI Ydts HCt N NNutrientsZNl00mlYWIIzSOa * NEeawMetalsv.N a50iiit YN HNO" M NAtl Other Non- Radioloeics WN 25Oml AP' N No kservative Added Gross Aloha WN I,000 ml @ffi HrSOa 79 Nuuer tspeclry,ku%UN JSamplevolume Y@ 6) Ifa preservative is used, SpecifyTlpeand Quantity of Pmservative: I t I I I t I I I I I I I I I I T I I Mill - Gmuadwater Discfi arge Permit Groundwater Monitoriug Quality Assurance Plan (QAP) Date: 2.25.07 R.evision: 2 Page4Oof4l ATt',AcqldEryrl WEfl[gE MESA [,IT'"ANEUM MXT,N, ETET,D tsA.?'A WORKSffiETFOR GtsOU}IX} trflATER DescripionofSamplingEvent: I >f Orip**- lnhaa*Arrt*& Sampling Even tfut ,r, \ ler .,,a /tffi Pre,y., Wel! Sampled in SamplingEven Ln b!-t I pH Buffer 7.0.a.d pHBuffer40 *o Specifi c Cond urt*u:L?-rrt btos t r*WettDepth-, 11,(= Depth to'Water Before hrene-Wffi- Casing Volume (tl) +" W elt:-2112(653h) Conduc&ince (avg). Well Water Temp . (uuel--l-€ ;'b--i*ffi na e191:5*oidi,y l, 4 Wqither Con *-Ubr..{- -'" Ext't -Amb. Temp.(prior to sampl in1 evefi)-J g? L cnarinct'ance -i( tf,ConO,i"taf"" 32 /5 , -ps - .7,b8' ' . p t"*pr*nr"-A.8 {r"rop"*t* /S'72 RedoxPotend atnatg-Y?Redox Potential Axl--3-ti-l Turbidity---, 3.1 3.n condurt*r* 3,lVV' ( .' \\ '-''; ,H 7.7 l, $r / . t.Y rr*p" o* l/-of RedoxPotentralffJhl l-U Locarion(wellname) flnr,^r A f,ffitil, initd" F. '.y,ar h^.^ea Ap. DateandTime torPwglng3'i€ lW andSarnpling(ifdifferent) <.-- Well Purging Equip Use& &u*p or -bailer Wi[ fump (if other than er*"tl ?Eb RedoxPotentiaf e[l- --t | huob A.',r'J'l i .'i Mill - Grouadwats Dhc&arge Feruit Groundurater ll&nioriag Quality Assureace Flan (QAP) Turtidity Datq 11.17.06 P.evision: I Fage4l of 41 Turbidity Volume of Tt/ater Puged TVhen Field Parameters *M"**dL PumpingBaEeabtlation FlowRate(Q), ingpm.Timeto evacuBtetwo casing vohrmes (2V)T=ZVIQ= 15O Nurnber of casing volumes evacuared (if other rhan twr) ff well evacuated to dqnress, number of gallons evacuate f --Name of certified Analytical l-aboratory.if orherThar Energy t-rt"W frwffiu.tr Itrre of Sample Snliip& fakbb(tiiiiel,' E'iI$erEd (drcle)FrsetvativeAdderl (d{tle} vo&WN 3i4Oml Y GD'HCX,NNuhientsWNIOOmIYI[r.Soa /NEEawnfietals&)N 250fii,wtN EINOs tgl.- t:lAII Other Non- Radioloeics UN 250tril 'Y)' N NoPreservative Added GmssAlpha ,gN t.000mI FU\ -I IITSOT Numer (sp8clry) /rrxp^l {.u,a, gN Samplevolune Ycy)6) lf a preservative is use4 SIEqiryT)rpeand Quantity of Ppservative: .=o' e^.) 7ig,l* i7.\:;.i4?i, ^Jf /Y/*C t t T I I t I I I I t I I I I I I t T Mill - Grounduater Discharge Permit Groundwata Monitoring Quality Assurance Plan (QAP) FXELDDA,TA Description of Sampling Date: 2.25.07 Revision: 2 Page40ot4l AT?ACHMENT'1 WE{trT'E MESA E]E.AhIM.iM MXX.L Conductance (avg)': ' -l .. pl{qf,Itr:iter 1'':\MctlWaterTemp.Gvs) , .-.- lndi"fqr4i"i6pl) -furbidity - ,,.,.1): , n f,....,WeitherCond--===-- - -- - Ext'l".Amb.Temp;(priortosamplingevenA-22* \*..." ,:i , ,,] conductao"r -,3 {A ( - Conductariee, t"*p"wr* l4'* I :\,r:: RedoxPotential(Eh) - - I.?-b rime: fl,/& Gal.Purged Trme: fl:& Gal.Purge-d- Conductance.Conductance Temperature- Redox Potential (Eh)- Temperature ti Ternnerature RedoxPotential (Eh)- Location (wellnwne)-MbL LL Samoler \ Nami and :rrrttas iZy*,t fil^u {2. f , DateandTimeforPurging 3. t?. 0 I and Sampling(if different) Well PurgingEquip Used: Xpurp or-bailer Well Pump (if other tnaneerneq!tu;;)hq1,*1 SamplingEven , WelI Sampled in Sampling Bvent-YYllaLS Z ptlhrfirrl.A 7 - 0 Specific Conductance 'LZ-ul,htgslcm Well Depth , / 2 /. 3 3 - Depth toWaterBefore p*ernE-?1 3f- CasingVolume(V)4'V/ell: zr, A (.653h) 3" TVell: ar *._ (.367h) RedoxPotential (Eh)- u.o I t T I I I I I I I t I I t T I I I I IVfrll-GrouarlwBt€rDischaigepermit Date: Ll.fi-A6 Revisiou I &ouadwaterMonitoriog Qrmlity /issuraace PIar (QAP)Page4l of4l ?urbidity.Turbidit;r Volume of $/ater Purged ffi dL Pumping Rate Calculation FlowRate (Q), in gpm.Time to evacuate two casi4g volumes (2V)5/60==,N,frT=zyle=L Numbelofcasingvolumesevacuated (if otherthantqro) u{r 4 If well evacuated to dr5rness, numberof gallons evacuated l/l+ = Name of Certified Analytical Laboratory if Other Than E "r*t#% Ef{ * s-rt ", I 5.-{ /or'" / I?f Sauent<- '17a.,-r0,/a Typeof Sample Sarriple Takbu {ttieiot' SpilriileYolume(inilicateif bther Filtered (circle) F$esertra.gve A{ldg!! (eiidel thriii $e spedlfied tielow) votk ZN 3i40 EI Y /iD HCL @N NuEients MN l00ml Y IIa$O1 A) Nlleaw Metals N 254'iil tvN IINq (Y NAtl Other Non- Radiolocics vl N 250mt 0D- N NoPreservative Added Gross Alpha qN l.000mI WI HzSO+ &) Nuuef (specry) I be*,*ol {n*ooni UN Saaplevolume Y6 I ffa preservative is used, Spe-cifyT5peand Quantity of Preservative: t I T I I I I T I I I T I I I I I t T Mill - Groundurater Discharge Pennit Groundwater Mouiooring Qualiry Assurance Plan (QAP) Date: 2.25.0'1 Reyision: 2 Page40 of4l aSsACrrh@N" I $/E{XTE MESA UR.ANEUM MILX, rf[ELD BA,TA WORKSffiEE? FOR GROUND WA?'SR Description ofSamplingEvefi: I >f OUip rzp /q?aa**rtt*tzq8, Locarion (weumme) tvtut 27 irffi'Xlo ini*ar F ..yo-.t D*u^ea 8^p. Date and Time for Purging 3 ' l? - O Y and Sampling (if different) -well PurgingEquip used: lpump or -baiter lvelt Pump (if other thar,BEmet)l?E{- SamplingEven Prel rffe! Sampled in SamplingEve nt--4g,/k pBBufferT.0-!-11 plhutfera.o ' ? O Specificconductance 4 ? ulh{Oslcm WeUipep*. ?,f Depth to Water Before PurSrn&-SA,.8Cl- Casing Votume (V) " Weil:28-31 (653h) Weather Con AW Exf l-Amb. Temp,(prior to sampling even i-J/:.:- Tine:LZSO,..c*rrrg"a conductance lryq3 Well Water Te *p. (xve)J -3 .JF 3 " Wcll :_--_-__-__(. 3 67h)pllofrtrdter("uil.6-< --t,.- Redox Potential (Eh)5?TTurUiaity, 37.f f .. r pH" T"rp"rutu* 13.7d RedoxPotential'tfrh)L RedoxPotential(Eh) . r*iairy .47 Turbidiry "ZZ ffirse-d- conductance l lYZ r"rpoutr* \3'-0.? - Redox Potent i* $Al pru L.'{D tr*p"*t*" l3:b Ll RedoxPotential AA> 5bZ' 4"a o* s.87 ..l u t I T I I t Mrill - Groundwater Discharge Permit Crouadwater Monitoring Quality Assuraace PIan (QAP) Turbidity Date; 11.17.06 Revision: I Page4l of41 Turbidity. I I I I I t I I I I Volume of '[VaterPurged When Fieldpar.ameters arcMaswed. 7 ?.,(- Pumping Rats Calculation FlowRafe (Q), in gpm.Sfta= -= --33 Number of casing volumes evacuated (if orher rhan *ol__LA-gf/ If weII evacuated &o dr5ness, number of gallons evacutfed ><a Name of Certified Analytical Laboratory.if Other T1ratr Esergy Labs. Time to evacuate two casi4g vofumes (2V)T=ZVIQ= 175- *.r,* $4,,/t*v€ ftbrt L**:6*)IYpeof Ssmple Sairtrnle Tskbtr (aircle) , Sri'ihrileVolnme (indicate if otlibr Eiltered (circIe)Preserradve Added (circle) VOCs t/ N 3xrCImI Y ECT" A) NNutrientsYNI0OmlY/Ilz$oa @ NIICawltlctalsYN250frIWNIINO3I\TAII Other Non- Radioloeics &,N 2-50'ml G}.N NoPreserrative Added Gross Alpha N 1,000 ml Y 6S)IIzSO+ U) NurJrer lsPectty) 0 UN Sauplevolume Y@)@ Ifa preservative is used, SpecifyType and Quantity of Preservative: I I T t T I t T I t I t I I t t I I I Mill - Groundumter Discharge Perrait Groundwater Moritoring Qualig Assurance Flan (QAP) Date: 2-25.47 Revision: 2 Page4}of47 ATTA.CHMENT i WE{ITE MESA. EJRAIIilTI.,M MET.T, E'@r,D DATA WO Description of Sampling Event r-t-af /, GHO{IhID WATER (,....' urau"tuau 37,1f ,* [-Ti' ' l r"mperaure /V.39 RedoxPotentior fsn)-ggl -,*rorr, , {7 t"*pux* l?.fl . RedoxPotential (Etr) ..S .2 / Turbidiry..y( p r*,peow" l{ 70 - I u*L "bz t Locarion (welname) t\,o 2t ' irff"tllu ini;,tiats 4a^t F,a$q*t- PQ DateardTime tolPwg:rr1 3.!?.O I andSampling(if different) - . Welt PurgingEquip Use& ffumn or-bailer Wett Pump (if orherrhan e"*"q-QE[- SamplingEven,0, ' 4,r'? 4go! , il,fiPrev-.WgllsamptedinSamplingEvenLrxu-ef pHBuffer t.o--V.0 p:lhuttura.o '4,() WellDepth ., f (0 , Specific Conductance-4. .Z-Ehoslcm Depth io Water Before furgine- ? k. 6 { Casing Volume (Y) a" Weil: Z0 . I 7*.653y1 3" Well: (.367h) Conduetnnce (avg) , r p.H ,Wnter (avg)j..,.:,,;.i, .:.: Well waierTemp. (avg)- RedoxPotentini Gtr)-rurbidiry - weather con a.U--Ea"X- Ext,l Amb, Temp.(prior to sampling even o_23]O coodrrt^. 98 L{ I " con*rctwce-3 Lg.Lpn 5..>Y - r"*p.**" ltl,L3 Redox Potent ia $$J) ft.-- Redox poten riat (ED 5 3 f ' {' zUluob .J I-- ;f. jr:----r- -4, :,, . .a:;.:: ,,.1.;,,r.i,.;.l.,;.,-,.r,,..r,:.,. I I I I T I t T I I I I I I t I I I t MilI - Grouadwater Discharge Permit Groundsatex Moaitoring Q&lity Aps uraace Flau (QAP) Date; 11.17.06 P.evisioa: I Pagea,L of 4l Turbidity.frl-rA.turbidiry /U'* _ VolumeoflUat€rPurged@ d 3? [ Pumnine Rafe Calculatioa FlowRale(Q), ingpn.5/60= =- . 3,3 Time to evacuste qwo gasing volumes (2V) T =ZYlo= t 29 Number of casing volumes evacuated (if other than ,*o) If well evacuated to dryness, number of gallons eracuat€O /,1A Name of certiriedAnalvticallaboratovirotherrhanraewruas d :!rff:-,fr( (*#" .!::).: i;i '.:::,:':' .':l::t;:- );-;1 !':i' ,, -\j .l ia:.-.. .:::i,:t :: :t;::1 . r,i,:lrl:r iii:'), l-:11;r- I l Tvpeof Sample Srjri[p.!e Takbp (ciieic) , Sal4itleVolume (lndicateif bther Fil6ered (gircle) Freservative Aqlded (circle) tlittii:ii speeified below) VOCs U)N 3x40 ml YdEt.HCT- fiD N Nuhienls rN 100mI YN/I{r,SOa 6{ NE*rwMetals N 250fr[(nN Hrvos @ mAtl Other Non- Radioloeics €)N 25Oml IY) N No Preservative Added GrossAlpha @N 1,000 E t w)w IITSOa t$ Nuther ($pecily) L*uilE***^ UN u) Ifa preserrrative is used, Spe-crfyTypgand Quantity of Preservative: '-6r C.omments I I I I I I I t I I I I t I T t t I t Mill - Grounduater Disc&arge Fermii Groundwater lVfonibrirg Quali$ Assurance Plan (QAP) Description of Sampling Date: 2.25.07 Revision: 2 ?age4Aot4l aTT'Apmr@h8['1 WHTTE MESA URAHE[]I!{ MXE,[, Samnler Location(wellname) /4Ar^,,.2?' ii*I';"utritiak i2ya^r, !*/,*<(- A P. Date and Time tor V$rgAg 3 . I X ' 6? anaSampting (if differen0- -- _ '[Uell PurgingneuiFusert Cpump or-Uaiter WeU fump (if ot]rer ttrunBenne|@E[-_ SamplirgEven, (lue*o*fi Ga.. &f,vrWetlSampledin Samplin g1vent/,/*- pH-ButrerT.A-3:12 WedthErCond. flt''.'i\*-.'.' --!-+--___<J rr*p,rut*" l2'3?- T"mp"*trr" /l 6 Z RedoxPotential:fnf RedoxPotentiat(Eh)- S3() t,+ I \>.47 conductance \BfS nH .5.6 f conducran* , Lll /2- pre 5.7{ t *prr*,* l{' Yl , - RedoxPobntial ear+)'. 57b lt ?" Redox Potentirr eeh) 5J g ' t__;;f,pA ';. . '. :l {o Depth to water gerore ftrrgitr&-L0L3g_ casing volume (v) 4' weil:J5=J4("osgn) 1,,, $!;.:.',..,' ,' '- ME - &orcdumer Disc&arp Feacair Giouedvrafa- It4onitoiing Quality Asctraece Flau (QAP)PagstT agi,7 Volnme of trfi/ater Fruged Yt/her Field Perametens *, Mr**rJL Pumpine Eate Catculafion FlowP.afe (Q), ingpm.s/60= =- ,3=Time to evacuatelpo casiag volumes (2V)T=2VIQ= 7-Z n ,- Numbes of casing volumes evacuated (if otber than two) - . . _ If well evacilafed to drSmess, numh6r of gallons evricuatqd__ -_ NameofCerrifierlAnagricalr aborarorlif0theriltanBnerry *U, / . l, L { rtz\ d Datff U.17.{h5 F.evision: I fimeef$nuiirle $aiirole Take& @dla)., Filgered (cirde) Flreeedvafive.Added(dii{e} ,vo&YN 3*{0 int YS XI(I,7N Nutrietrts friN IO0mI Y6I IIaSOa fi NEdiwltfEralr'ff) N 250liit"WN HNG 2.- N'All O&cr Non- Radioloeics YN z30-iii ' _r;. G}'N NoPreservative Added fussAloha @N l.0B0al (l5N E2SO, (T) N Other(speciS) f-{ ,. I frDra g)N YS Ifa preservative is une4 SfecifyTypoand Quatrtity of Breservatiye: f I I I I I I I t I t I I I I T T I I I Mill - Grousdwater Discharge Pe.rmit Grouadwater Monitoriug Quality Assurance Plan (QAP) Descripf ion of Sampling Date: 2.25.07 Revision: 2 Page4Dof4l ATTAC,MIdE..NIT N WHTTE MESA. E'RANIUM MNN,L . b1 t"*p"*t r l(' I L, -- RedoxPotential(Fh) 55r ll Redox Potentiat(F-W \1X. '- n* a-tK 6*t*:;l-*,31 ( Location(werrname) fl4 3i- ' ffi;:'Il,. i*riak lZyc-u la-luL {.P. DaeandTime tarftsreurg z' ld(' (IY anasampling(ifdiffcrenO .'- Well Pnreingequip Used Cbump or-bailer Well Pump (if otlrer ihan Beloreg,QEh- Sampliae Evenr (r L M rt @L{ C,pa J*&.g,v. Wclt Sarypled in Samplin gnurot Z!!il- Z f ptiBtfferT.a-A 1! Specific gonductonce. Z Z-unh.q$rc.E W,.+ Depth to WaterBefore p*AneZNJJ* Casing Volume (V) 4" wal: 712.1M.esln) Co[dri0tdnce-'(avgL Well waier rern p. (^" $-fi-A|- nu, fiiplprio: to sampling w"ttl*dfu nH S -1'l trrp"on* ,l?'ZF - ?emperature lJ.S-? Redox Poteng*'fghl-l0.8-- Redox Porentiar CIfrt S6 C'! cordtctance -ZW cordoa^o 2rt?3 ps [o.4 renperuare 14 .6? - .{a I t I I I T I I I I I I , lj i II L&ll - Ciroundwaer Dischergc Feroit &ouadviaferMmioring Quality .Assuaace PIaE (QAP)PagaAl of 0,1 ?urbiditl4 Turbidity VolumeofWaternrge.d 7./ ---7_ Pumpine R te Calculatioa FlowRale (Q), ingp.m.s/60= = .3=Time to evacuate tvro casing vohunes (2V)T=ZVIQ= /2 I ii,,- Nnmber of casing volumes evacuatad (if other than tuA If well ev.lcuated to dqmess, number of gallons evaeuate,fl__-_ Name of Certified Analytical Laboratoryif OtherThan Energylabs. Date: 1i.I7.05 F.evisinar I 'orr; e4/<*+* /4, Tvne of Sasirole Sairii6le Thria$(rifiile)', Silfemd (ciurlal Eneeeiuafire Atlded(dtif,e) ,ll'r:.,:l VOCg N 3xrl0'Dl Y6y H(L @ NNirttientsN,OOmI Yd H;SOI'7NEeriWMetalsi"I/ N 25Ofl &N ffir-l7.- N'All Other Non- Rrirliolopics @N 2sotrr . tt- oz- N Ns Preservatirre A. dded rGrtissAljiha wlN I.00Oml &)N I{rSOa W NO&er(speci$)or@ VN Saryldvolume @ @ trf apreserative is uoed, SpecrryTrrygard Quantity of fteservative: T I I I I I I I I I I I I I T I I I I Mill - Groundwater Discharge Perroit Groundraater Monitoring Quality Assuraace Plan (QAP) Description of Sampliog Date: 2.25.07 Revisioiu 2 Fage 40 of4i arn'apgMEl{T'{ WFITT'E MESA ['R.AA[M.IM MNN,X, Condudrance Well WaterTe mp. (ru$)!l* , :.u : : 3'pell: (.367h) ',pE,p.f,W,ttett"uel," [ .qZ - :: .: ' neuuiin*,lii@l-.lllr*idity . W^ Location (wettname) /W<i .3{ -, ' iffiJn, initiats i4ya,,v 0*/,-<L (,l). Date and Time for Purging 3 ' t 7 ' A {-*asampling (if different) -- Well PurgingEquip Uierl 4$ump or-bailer Wat fu*p (if other than ge1;netl & ED_ SamplingEven, (l' ^ *r*\. (,*,J,.#ryy,flelf SampledinSampting lrvr*-fklP 5O -,pHBuffer t.O----Z rt- Specificconauerance-fl2-rfl\,hHoslcm W,glp"irr,,,, l, 1Q: Depth to water eeturcpw+tng*El,lb9 casing volume (v) 4" welr:Jfi..Y3.653h) ext'+Amb.'ijmp.(pggr to samp un1 event)--./ 7 : o,oiu"qar,"l7/L t ., C. se RedoxPotentiar @ { 87 Tirbiditv . 4 Y !:'t\*"' e-ood*tan* . [ 7Zd nH L- bL r"mpu*tore l( "ZO - RedorPotentirtWJ.3j-_ Tt*iaitv - 2Z {a )3.a I conductsrce l?20 conaua^"" 170 7 pps. , ?.01 - r"rp"*t* l{' 08 -Redox Potenti ^r W- ! -!.0-RedoxPotent irtrsr4 t[3 / ' foel - "'l,'l'7 ' ,- t , '-.'r ; I 'lU;j Number of easirg volumee evacrrated (itother &an WA t I I I I T t I I I I t t; it t; ll ! II ,t E rg E r$ I$ Mili - GromdwaterBischarge Feouait &ouadwaErMonitonag Quality Assuraace PtaE (QAP)Paga4l of4t T'rrrbidit{T'rlrbidity Volurne of lfiater Purgecl When Field parameters are IVIeas r*dL PUmpingPote-Calcuhtion Date: 11.17.05 Revigio:r I FlowP.ate (Q), ingpm.s!6$= =____'-l 5 ?ime to evacuate two caeing votunres (2V) T =zVtQ= c33 If well evacuafed 8o dryness, number of gallone evacuateg__-*T_ Name of Certified Analytical Laboratoryif Other Thlur Energy Labi Tsmeofsarnele Sairii$le T';iildh G!ld!g),,' Eiilterc{ (dicle)FrgaodvatlveAdded {drbl,si VOCs p "N 3i40ifrr YGD}.Eq-SNDluttiedYNIOOfiIY6?I{zS-Oa .5D NItEalIylvletalg,NN 2sofiil..ry)N rrNo; (y - N'AIt Otlpr Non- Radioloeicg wN 250dt @" N NoPrcservativeAdded Gtoss Alpha N I-OOOmI @N HrSO" (9 N"Other(specify)6tN Saqpldvolume Y@ ffaprcservative is use{ Spec'1fy Typeaud Quatrtity of Preservative: n iers I I I I I I I T I I t I I t I I T I I Mill - &oundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) ETEI,DDATA Description of SamPling lLs**/<- A?racffiMENT'1 VflffiTTE MESA E]P"ANEUM MIL[, Locarion (wettnarue). tlUN ZV itffJil, initiots EYa* {4*''a- KA Date and Time forPurging '3'Ztl " nX and Sampling(if diffetent) / Well RngingEqriipused.z(pump or. bailer .W.lt Pump (if other ttwrnemeil & F-b- SamplingEvent bnil,',f4 Pre-v.WellsampledinSamplingEreot @- pHBufferT.Q 7,u plnffiera.o .. ' /--O SpecificConouctance-flL ul&tos/cq Depth to Water Before Prrgt"g-#5,15- Casing Volume (V) 4" Conductrince (avg),pll.p.f.,Writer (avc) well water remp . tuug-l:!-U- '- l I il,rr 'r )r'--.1 :ta. ,.i,: nefrif'POtential G '/(.:4 Wesrher Con edq) 4 - Exf Fgmb. Tainp.(prior to samp ting event -Z-:Z4L) .''' alodo"i*, {?9V -* -GpH ='>/ rr^pr^* l2l,'? 1 RedolPotenti *gdl Redox Potential frA . Sk { Turbidity 2,06 r,$bidiry l- ?7 Date: 2.25 A7 Revisioa: 2 Page40of4l {:,.,, Time:-Gal.Purged- - Conductance- Time:-;- GaI. Purged Conductance- RedoxPotential(Eh) - .' -L,:j RedoxPotential (Eh) I I I {)--*,'^*t* Date: ll-17.06 Revisioa: I I I I t I I I t T I I t | ::....::1. Mll - Crrouadwater Discharge Permit &ounds/atern onibdng Quality Assuiaace PIan (QAF) Turbidity Volumeof WaterPurged PumprogBgteglctila$a-m Pap4l oi4,t FlorvRaoe (Q), iu gpm.S/ff)= =--*--.33 Time to evscuatetwo casing volumes (2V)y=tlllQ= f 4 qt,t_. Number of casing volumes evacuated (if other than two)-- : If well evacuabd to dgmess, nnmber of pllons evacuatet'_ Name of Certified Analytical Laboratoryif Other Thaa Energy Labs. il.:; ,Y il ,::?; :ii:l:i:t 't:\;.. Comments ':4,:. .,-: itlt i:;: I (:t',,:). !i:':,'I I Tb-oeof Sanole Fniaen TFHen {di,1L{61., Fi$ered &ircle) .7 t\ PneaeivativeAdded fcircle) .*t7t- VOG (Y) N 3x4O'ml r (N)HCt (v/ N Nutrienls YN 10Oml YN Er'S-Oa .Y N HedWMefnls ,YN 250iiii..YN IINOI Y. NAIt Other Non- Iiadiolocics YN 25Oml V.N NoPreservativeAdded .Gms$ Alpha YN 1.000mI YN H,SO, Y N Other (specify)YN Sampltivohrme YN If a preservative is used, SpeoifyT]ryeqEl Quantity of Preservative: ll h)' I I I I t I t I I I I t I I T t T I l ll Mill - GroundwaterDischarge Fermit Groundwater Monito'ring Quality Assurance Plan (QAP) F'[EN,DDATA Dats: 2.25.A7 Revisioa: 2 Page4Aof 4l €S: Redox Potential(Eh). b">*e ATTACSIi@NTx WHTTE MESA URANTE]M MNN,L DateandTime forPurging V' Zq. O{ and Sampling(if diffetent) -- WeltpurgingEquiiuse& /numnor-baiter weurump(if otherthan ,r*o>@ d*zrilons SamptingEven , (t , nd, nAr, P1e,v. wetf Sampled in SamplingEve "t, tv,tlJ- Lg pHBuffer7.0 pH.Bqffcr4r0.8,o Specific cooauc,*"e-43-rtfr1oS/cm waryei'pth.,,', lZl ' 3 \ - Depth oo WaterBefore Purgin Casing Volume (D a" Well:-fr--C653h) 3" Well:-azl--(.36?h) condnctrince(avgi '.pH'o.fffi<*A#. ,', . ,'".:. . :- lVell WaterTemp.(zve\-ty-',:nedori potentiat (Eh)-llgTurbiditre- WerilherCond. .yf ' : Ext'.l..Amb.r1mn.(, iortosamplingeveot)__ .,_ oooao"t^r* 3 361 .- Conductiriee / ,' '; oo A.5( . r"rp"** /5-/r/ Redox Potential (Eh)- ,*ror* ('47. T i*e: -rtt u--Gal. Purged- Conductance- Time: ,{rG - Gal.Purged- Conductance . Temperature Redox Potential (Eh)-t:jRedoirPotentialFh) ' , ' , t I 1.,' Mill - &rouodwate' Digcharge Permit CaouaduabrMonitoring Quality Assuraace PIar (QAF) ?urbiditv Date: 1t.i7.G5 Pevisioaj I Fagc4l of 41 I I T I I I I Volumeof WaterPurged _ Pumping Pote Cglculation Flow P-ate (Q), in gpm- , = Time io evacnate two casing volumes (2v)sl68= = ,55 T=ZVIQ= 44 Number of casing volumes evacuated (if other than ff well evacuarcd b d4nress, number of ga llois evacuatefi_ fo r>_r Name of Certified Analytical Laboratoryif O&er Than Bnerry labs. t I I I I I Typeof $amele Eileered (circleJ FrcperqgveAdrle:[ feircle) VOCs (Y) N 3x40ml y /fI) i.HCL @MI$uhientr YN l00mI YN I{zS-Oa Y NHSEtryMetals,YN 250Ht.YN HNI^L v hTAII Other Non- Radiolosics YN a5Oml Y'N NoPreservaliveAddgd Gross AIbhtr YN 1,0@ml YN HzSOc Y NOther (specify)YN Samplevolume YN Ea preservative is used, specf1}pepqd Quantig of &pservative: t I T I I I I t t t I I I I I I t I I Mill - Gmundwater Discharge Peridt Groundwater Monitorirg Quality Assur-ance Plan (QAP)W,E^,'\')e Date: 2.25.07 Revision: 2 PageNof 4l aTTACE{iV{ENg'1 WHIIE MESA T'RASIII'M slfl{,t EIET,D DA.t'A WORKSffiEY E'OF' GRO{IND, WATER Descriprion of SamPling Date andrime to,3.$e1ne '3; Ztl'o d- a\dsampling(if aireereit\ /- welt purgingEquip used &u*por-baitgr welt Pump (if other tinaneewrt)JC)El.- r"anrlrrcrrnce 3 gf{/ ,* 5'4 7- ,r**o*" l?'9 ( Temperatue /ry- 'S? Redox potential {Eh) Redox Potential (Eh)- {{ Conductance .. Conhuctirice . /, ,.i , pH,. - (Eh)-t:; T,,r.t Specific conateance 4.? ,fifuostc:w wellDepth, / /d , - DeprhtoWaterBeforep*errrs-31-J3--casingvolume*rfl#.?L'24\27/D t: i;l''l::) I ::: WelWaierTemp.(avg)-'npa,-offOiintid@tr)----turUidity- wea&er coot-{*,f ..-ExttAmb remp,(pnorto ru pting.urnt't-2€ L l-nnrllrehnce pH . - n* L'ttq . ' (r.?K temperuw. J5'Z X RedoxPotential(ph) - RedoxPotential {a t,5,.-* Dats l[.17.05 tsevision: IItdill - &omdwaterDischarge Fermit Groundwatei Moaitoring Quality AsuEaace Plaa (QAP) Volume of Warer Purged When Field Parameters are Bumpiqg Rate Calcdttfion Time to evacuatq tl,v! casing volumes (2V)FlowRale (Q), ingpm. ? ?.(/6fl= = ' J)T=ZYlo= llll t*;^.'tQ=5/6)= Page 47 of 4,1 Numberofcasiagvolumesevacuated(ifotherthan twa), l . X .(,1/, Ifweltevacuatedtodryness,nuurberofgallons ev:r;rr/ted'/- -Name of Ceftified Aualytical t aboratoryif Other Than Energy Labs TsEe of Samnle Sq,lhple Ta&en G!dlE),, Tlttered(drtli)Ereseivativq Addg4 (ciqcte) vo&(Y) N 3ia0'rtil Y O\U E(x, CVl N NuEients YN lOOmt YN H^SOI Y NgoiyyffifqlsYNzsafrl,,III{G Y. NAll Other Non- Radioloeics YN 25Oml Y'N NoPrcservative Added .Gross Alnha YhI 1-000 mI YN I{zSOa Y N OtherGpec$)YN Samplevolume YN ffapreservativeis use( Specify$peand Qmntiry of PlesErvative: I I I I I T T t I I T I Datez 2.25 07 Revision; 2 Fage4Oof 41 ATTACHMENIT'X urEure irmsa tIF.eNELil'fl MXn'-[' GROUND WASER : r,'''' Ext t'Amb. Temp.(priorto samplingeve nttZ?:L' :.':, ' t T I T I I t uodurt*", 311€ . pH.-------!" frrrr9"rrr* ,,,1.,5,, : L '{ -Rerlox Potenti a' t*l: S 7'L--RedoxPoteu tial(Eh, q% I , :. r*iairy l() 3 'n,,iaiq- 4,-{5 rime'..ldjS-Gat. b>b Mill-GrormdwaterDischargePenoit n /\ lr, Grourdwater Monitoring euairyassnranceptan(QAP) '[1" )'*f DescriPdor of SamPling Condtic&ince weather &rnd-.b*/Ll Date and Time rorewgtng ? - 44 - o x- afisampling (a drfferentl -- lVeU Purging Equip Used' Xpump or,*bailer Welt Pump (if other thla.Belnlret\-AFb - € '-d ' / SamplingEven tt2l".,-cl^. +V - Pre-vrWells.ampledinsamplingElent'flz'h/ I *e euvrrn*t.o 'J4 ,, ' PltBuffer4'o 'Y-C -SpecificCond ,"^n-. ?'7,-'lisrosfuln W2ttoepfn"'' 171''€ ' ' Deprh to Water srron p*s*L + ? -' S )-Casing volume *{ #;i:ffi;tr' r**prot* )1' 01 ' fiaL i ,'l I I I I I I T I I I I Mill - Crouadwam Discharge Permit &ouadmaterlMor'oriag QualiEy Assuauce PIan (Q&) Date: 11.17.06 Revision: I Page(l af 41 rbrbidiE{ Volume of WarerPurged TVhen Field parameters are Measured Purnpine Bpte Caleulation FlowRab(Q), ingpm.5/6{)= = ,3 3 Number of casiqg volumes evacuated (if other than two) /-__ If well evacuatsd to dryness, number of gallons evacuefe.f_;l___ Nanre of Certified Analytical l-aboratory-if Other ?Iun fueW L*ufu fine fo evacuare hvo casiag volumes (2V) T=ZV4Q= . t I t TsoeofSaniple Sqirh0le Takbh (dii"l$). Eiltered (drcle)Freserra4vg.Adde,4 (d$aei >N'VOCs y/N 3x40mI Y6V.:HCXL (9 NItIutrienbYN100trlYNIIz*IO+ Y NEiowMerah.YN zsofrI Y N,'ftMc}" v hrAll Other Non- Radioloeic,s YN 250mI Y'N NoPresenadveAdiled GrossAloha YN !,000 trol YN HaSOa Y Numer(speclry)YN Sampltivolume YN If a prroserrative is use{ SpecifyType aad Quantigr of Preservative: t I I t I I I I I I I I I T I T I I I Mill - Cirormdwater Discharge Fermit Groundwater Monitoring Quality Assurance PIan (QAP) Date: 2.25.07 Revision: 2 Fage 40 of4l AT'TACEfl16EIqT'X WHXTE MESA URANIUM MIT,T. FEET,D E}A,TA WORKSffiETFOR GRO{]I{D WATER. Description of SamplingBvent: I { (Xu*a.rL* Goaun.},,-,.t&n Locarion (wenaame) wkr 3 ? iffi.til, uina, 4r^, )d,,^,r, &-0. Date and Time forPurging .< 'l2 -( Y -and Sampling (if different) --Well Purging Equip Used: Spump or:-bailer \ilell Pump (if other thnthemei OFS &{t'c..$/ A SamptingEvefiQu^.ratot, (A.<.-,1-.s? Prev..WcllsqmpledinsamplingEvent-llr?*l lV pHBufferT.Q ?.o pHBuffer4.O 9, o Specific Conauctance 7. 7 ulviH0slcm Depth to WaterBefore P$r€luri:' ?7. 3L . Conductance(avg)+ Wetl WaterTemp.(avg)- , 1' lVellDenth 13 Z. S Casing volume (Vl +" Wen.&- O32!.eS*) 3" Well: (-367h\ r.r.,',lr'i',. ;'.., RetlorlPotentid @h)-furbiAiry :,, Weather Cond. , - Ext'l.Amb. Temp.(prior to sampling event)21-("... , conductance {0 ZS p Temperature lLt. (l Redox Potentiar CED--<! 0A-- Turbiaity l3'L -Turbidity. pn.. 5.7ff , T.*p"rn*" l4'27 RedoxPotentialGiril 44S - t9.b conductutce 5Q47 pH .\,82 Redox Potential (Bh) q q Y L-50 t:; Ttu{-,L. a ("'a; ' IV&l! - Groundwats'Discharge Permit Groundwater l&niforiug Quality Assuance Plaa (QAP) ?urbidifi ilA Date: 11.17.06 Revision: I Pap4l of4i Turbidi6q VolumeoftrVaterPurgert dL Pumpine RsF Calculation FlowRate(Q), ingpm. 4 -5/60= = , J->Time to evacuatetwo casing volumes (2y) T=2VIQ = 2l g Number of caeing volumes evacuated (if other tlrwtu,d I , / A / If rrell w**ed to dr5rness, number of gallons evacuat e_d.____r *_ Name of Certified Analytical Iaboratory.if Other Thaa Energy acldl.r o{eete TpEtl 4 -{c Preseryative Adderit (circle) Other {specify)Samplevolume ff a preserrrative is use{ SpeciffT]'peand Quantity of Preservative: ,rl. ,fuo Srrt {s;*; "lrrk ;l-/?, I I T I I I I I I t I I I I T I I I I Mill - Ground water Dischar-ge Permit Groundrvater Monitoring Quality Assurance Plan (QAP) Description of SamplingEvenr: lv Date: 2.25.W Revisioa: 2 Page40of4l ArTA.gm/qtslT'x Vi/EruTE ITdESA {'R.qNEUM MIN,X, Conductarice r . p Temperature_Temoerahne ? 0. OV Redox Potenti ^t' {Eil)--U-A- Turboiditv . !.8 Locarion (wetl name) fllr^J Ld ' iffin, nita, Zyo.^, P*/,*t (. P. Dae and Time for Purging ( '2 O . 09 Bnd Sampling (if different) t' well PurgingEquip use& 4$ump or-bailer wert pump (if other flran Belu.eq6 Fl)-- samplingEven* (f r- (r* &qv,WellSalnpledinSamptingEvenr SpecificConductBnee ?- 7 ui\,fo{Os/cm WellDeprh ruA-'t'" - Depth ao WaterBefore Purgrnl__-AniU_ Caring Volume (V) 4" Well:___:__(.653h) ' :!''-:1" "' ,: ' ,,.. ,,,1t, weathercond. ,, - Extrl'Amb.Temp.(priortosamplingevent)_ -__:l_ Redox Potential (Eh)_ Tu$idit]l ?-o (o orr L"?( Time:_Gal. Purged Conductance- Time: ; GaI. Purged_ Conduetance . Redox Potential (Eh)------RedoxPotential (Eh)- t ':br ts I I T I T I t I I T t I I I I I Mll * Grouadwater Dis charge Permit &oufldnaterMoaitoriag Quality Assurance Plan (QAP) Twbidity Date: 11.17.06 Revisior: I Page 4.1 of 41 Tiubidity Time to evacuafe two casing voluraes (2V) T =ZYIQ= r,/ I I I volume of fi/aterhrged Whea Fieldparameters are Mersued __ Pumfiiag Rate Calculati_o! FlowP.ate (Q), ingpm.s/fl)= =___ .3 3 Number of msing volumes erracuated (if other thantwo)______.--_ If well evacuated to drymess, number of galions evacuated -- NameofcertifiedAuatyticallaboraroryiforherThanEnergy t^b, I ) */ y' /rrA i /yr*rro^ dfiarhlS Tyqpof$ample SriihiileVolume -- FEltere{ (circli)Frese{vatiye Added (cir,cte) VOCs /N 3x.l0mI Y6IT'HCL A) NIYuttienbNI0Omlv6EII*sf),NEdlWMetals7N250"fr1.,VN EtIo; E.NAII Other Non- Radiologics WN 25Oml v-N No Preservative Added GmssAlpha ftN [,000 mI $N HrSOa N NOther(speciff)UN Saqplevolume YW 6) Ifa prescrvalive is used SpectSTypgaqd Quantity of trteseruative: ,ff.L 31.^rr-lt Mill-GroundwaterDischargsPerioit A ffikffiml,Hi;'** {lt >*'q}- EryET,DE}ATA A?TACEMENT N WTUUE TIMSA. EJRANE{JM MT[,L Date: 225.A7 Revision: 2 Farge4Oof 4,1 I I I I I T I t I I I I I t I t T I I Dare andTime tor?wgiag 3'L\"0 g ndsampling(if ditrerent\ '--' . WellPurgingBquipUsedi2fuumpor-bailer''WellPump(ifotherthan n'*'0 OA- Pf - I SamptingEven t bf n ,lutffi Prw,WellSampled in**rrylingsvent.,L'La"L '#Lb 7.O p$.BgffPr .0 4-o pHBuffer?.0 specific ca.**t*rcefr-fuas/g* wruotrpu " /- ,,, , , Depth !olly'aterBeforepurgi "* '--CasingVolume(v)4" Well: . - ('653h) ConducuncE <tWl",',' '' ' ,,',nffoJ''pa <rysl '' - ' ; 'l werithercond .- -: Extt-Amb,rirp.lpliorrsaruplingevent)-- --'- ,-','. Well WaterTemP. (avg) , **;**""*uit ti4il fturbiditY -(- '' Redor Potemial (EE)= G.flrPurged---*--* Redor Potential (Bh)f .';L,, I I t I I T I I t t T T I I I Volumeof WalarP*ged Pumping Bate Cdcula,tion FlowRate (Q), ingPm.Time to evacuate tlvo casing volumes (2y) 5160=.33 T=ZYIQ= 2 t7=2yle= ffwetl evacuated to drynesc, rumber of gallonsevacuatd '/t -Nams of Certified Anatytical Laboratoryif Other Thiun Euergy Labq Mili-Grousrlwab'DischargePermit Daia lL'17'A6 Revisios I GroundunterMoniodlg Qnality Assr:iaace Plaa (QAP) Z- Number of casing volumes evacuated (if orher a* w[*--LE-ilL Page(l of4l t t t T'trpe of $aunPle SrBgtle Taken (i:'@4" F'iltered (circIe) Breseiva$veAdiled fcitcle) '-VOCg /Y/ N 3i40inr [lWt.HCL U/ N :Nutrients YN rOOml YN f{"SO. Y N HdiiwMetals ,YN 50iiif ,YN;T|NO. Y N Atl Othcr Non- Radioloeics YN 25Oel Y.N NoPreservative +dded YN H"SO, Y NGrossAlphaYN1^O0O ml Other (spacifY)YN Sampl6volume YN If apresewative is use4 Specf-ytryEand Quantrty of Preservative: I I I I I T t T I I I T I I T I t t t Mill - Groundwater Discharge Perioit Groundwater Monitoring Quality Assurance Plan (QAP) FTEtr,DDAS' Description of SampliagEueot, I Date, 2.25.47 Revision: 2 Page40of4l aTt'acm4EN3" I W}frTE MESA {-IRAFWUM MNN,L F'OE I Conductance - Temnerature Redox Potentiat (Eh) :- Locarion (*"nro*.) t rd LS iffitilu *ua" 0y^^,, /"*{**r {.p Date andTime forPurging .7' I Z . A N *d Sampling(if different)--=--- \{ell Purging Equip Used: ..:&r*p or -bailer Well Pump (if other than g"r*"\-AEL- Sampting Eve ,tAA"*l i [n,rrJ,,,r Prev. lVell Sampled in Sampling Eve nt-A-N-Z f{pHgutr"r7.O ?. a pHBuffer4. Specific conductaneez-L ulvh{os/cm WetlDeprh , -- - . Depth to Water Before Purginr -- Casing Volume (V) 4" Well: (.653h) 3" Well: - (367h) t--Conductance (avg) , . 1-:- ,.. -WellWaterTemp.(avc)--*:--' n#aipot"niiaifpnl -- rurbidity - Weather Cond. - Exf l.Amb. Temp.(prior to sampling event)---1- . .- Time: - Gal.Purged-Time:--'- _ Gal. Pureed'- 'Conductruice - ,, - Te*p"r"tu.e - RedoxPotential (Eh). - Turbidity Turbidity Time: . Gal. Purged_-_ Conductance F Temperatue. - - Redox Potential (E!)- - - Tims----;--=- Gal.Purgcd----- - -Conductance- pH Temperature- Redox Pobntial (Eh) * ' -tb^4"h 6 {la,w z g Mill - Groundwater Discbarge Fermit Grounduater Moniroring Quali$y Assurance Flan {QAP) Turbidity. Datq I1.i7.06 Revisior: I Fage4l af 4,1 Txrbiditl Volume of l[/ater Purged T/hen Field Farameters are Measured Pumping Rate Calculatiog FlowRate(Q), ingpm. 2 >5/60= =-----------:-2 )Time to evacuate-fwo casing volumes (ZV.) T =ZVIQ= - Number of casing volumes evacuated (if other than two)______t-_ lf well evacuated io dqmess, number of gallons eyacuated Name of Certified Anatytical Laboratory-if Otherfiian Energylabq Tvneof SamnXe Saiuhnle Taken (aituI6)' Siiiirii,le Y,qtume(indicateif btlier Eittere4 (circle) Fneser:sative Added (circle) t&liii,d3 sDesiEed below) vo&ry) N 3x4OmI Y(N HC[, 6; NNutricntsff/N lO0ml Y6l I{zSOa 6( NHdnwMetalstbN250trIrpNIING &' NAII Other Non- Radioloeics @N 250mI @' lt No Prcservative Added 'Gross AIpha &tN 1,000ml a0&HzSOn (y NOther (specify)oN Samplevolume Y@ 6 If apreservative is use{ SpecifyType and @antity of PresErvative: I I I T I I I t t T I I I I t T I t I Mill - Cirotmdwater Discharge Permh Groundwater Monitoring Quality Assurance Plan (QAP) Date: 2.25.07 Revision: 2 Page4Sof 4l ATS'ACHMEhIT X WEffiTE MESA UP"AM['M KffiI-L FIET,O E}A,TA WOEES@B?'FOR GP"OUND WA?ER DescripionofSamplingEvent:. I >f 6)4aorzp 1n?auarAstt*tz& Locarion(weltname). l.r4t^r ?o iffi'il, in*iats F .y,*^t D*n^ere Ap, DataandTimeforPurging 3. ( k .O Y andSampling(ifdifferent) - ._. lVell Purging fqo,p Us€d fpump or -briiter W€ll pump (if other ttran Benne0l&L_ sampling Even' 0, r,-r-\ h t o, i . iT prev, well sampred in sampring Even & q)) ) p1f'Brfier7.|-?. tl p:f.Bfifera.O ' ?- O SfcificConductance / 7, -ulvhtOSlcm Wclt.Dep&, ,a Depth to Water BeforcPwgtne .v A Casing Volume (V) a, Well:--_(.653h) condu.&rnce Gvd , , ffi;WCt"r Or*, .1 ' It'j-al'1@ . | -i.,': .' ,.: :i.- ' . lVellWaterTemp.(we)-- r'- - 'neipipotentiai(Eh) --jfurUidiry --.,' Wed&erCond.,, / Ext,lAmb.Ternp.(priortosamplingevenr)___=__::_ --". . . Gal. Pureed -':Timett-, F -CaI. Purgea----.:-,.-* Conducdance '-- Redox Potential (Eh) . ---_RedoxPotential (Eh)_ Turtidity -. ' Time:-'- Gal. Purged-_ ."_Tirne: .; r- Gal.Purged-- --_ Couductance-Conductance RedoxPotential (Eh)-:---- - - Temperaturq RedorPotentiat (Eh) .- ' t-:;> ,,(Il;c -t, ,{ rw N Z{ .1,:'t, ..-i,l I t I T T I T t I t t I I I t I I I l ll volume of water Purged when Field Farameters are il{easured - Puqping Rate. Calsdatiog FIow Rare (Q), in Erpm. Time to ev&cuate two casing vorumes (2v)516O= ; -- . 3.< t=ztirc_= ---:'-* Numberof casingvolumes evacuated (if other than If well evacuated to dqmess, number of gallons\ Naue of CertifiedAnalytical Laboraforyif Other Than Energy Min - Crroaadffi t€r Dischafge Perf, air &ouadmaterMonitoriag Quelity ^Asouraace Plal (QAP) Turbidity. Dare: ll.I7-05 Bevisioa: I Page4l of41 S"n -i Sn", Typs o€Samplo Elltered (circleI Presergrative AFEded (citcle) =-T:"vo&UN 3x40ml vG,ECT- & NNutiettsNIOOmIY(N Hr$ol NHCawMetalsN250riil .(Y) NAII Oftrer Non- RadioloEics @N 25Oml ii. dilN NoPteservative Added GrosqAlpha &N J,fi)Oml l&N r{2soa ., fr) Nvurq \otEIrJ/ L**,1 fuau, ur\ I Sample volune ]Y N Ifa preuervative is use{ Spe€ifyi[pEand Quantity of Preservative: -v- I I I I I I t I I T I T Mi I I - Groundwater Discharge Perrait Groundwater Monitoring Quality Assu'ance Plan (QAP) RedoxPotential Date: 2.25.07 Revision: 2 Page4fiof 4l AT?A,CSMENT'X WTETE MESA EJR.ANTE]M MIE,[, F'@LD DA.TA. WORKS@E?'FOE GE{,OUI\iD IryA.TER DescripionofSamplingBvent: I >f Ouiirr-e- lo{aa*Aat*>A Locarion(rrlloo*r) ltll ?.( i,H'Jil. inrtiari E.y,a^t Dn u^ea Qp. DateandTimeto*wgng-Z:W:0K &dsampting(ifdifferent)'- _ well PurgingEquip usecl )pump or-bailer Well pump (if orher *annenneDjLFT --Sampling Even tet an**a\ h.a., ,n4 ,,ffi prev. V/e!l Sarnpled in Sampling Evenr- pHBuffer 7.0--j-d-p*lBuffera.O--- ' ? t2 Specific ConductanceZl -ulviH0s/cm Wett.Depth ,= - - Depth to WaterBeforePurging---- ,-- Casing Volume (V) 4,, WeIt:. - (.653h) 3 " Well :_____:_(.36Th) CondueEince(avgl . . p.E.9J,Water(avg)..__--_ well waierTemp. Gvg)- 'R.ddiPdtential @h)-ruruidiry - WeBtherCond.----,_..-__.____ _ ErtrlAmb, Temp.(priorto samplingevent)_ .__:j_ ,., :, : fime: ,, ?tt C4l Pu Couducfance Conductridce r L.' pH Temnerature PlI,- ' . Ternperaturc_ Redox Potential (Eh)_ Turbidity Gh)- Turbidity L-j; T t I I T I T Time: AlEt GalPweed sA Conductance_ Time: lVq Gal.Pwged, N4 Conductance Redox Potential (Eh) ---- RedoxPotential (Eh) {w@ t4 ' r::.:11:1: :' i' r: '. ),, i,;,'t) t I t t I t T t I I I I T I Vohuneof WaterPurgedX/heoFieldparameters areMeasured u Pumpine Rate Calculation FlowRate(Q), inpm. ,5/60= = -_.,33 Number of casing voluunes evacuated (if other than two) .- _ . lf well evacuared !o dgmess, number of gallons evacuated_1_ Name of Certified Analytical Laboratory if &her Than Energy Labs. Mill - Gmuadwater Discharge Permit Grouadwater Monitoring Quality Assuraaee Plan (QAF) Turbidity Date: 11,.17.06 P.evisioa: I Fage4l of 41 ?urbidity. Time to evacuate t$vo casi4g volumes {2V) T =ZVIQ= /"rr ,{ ,.'::, ; l i.,;': i '),:i:;i I Tvpeof $ernple Sqiriiiple Taken (,clitl6),, SaiirElellolune 6ndiei&iiii&e-r Eiltered (circle)FreseryativeAdde4 (oiTql4 imilii, spesid;a BiFI{i#I''*t;. -. - .YOCs N 3x40ml Yrf}HCL q NNutuientsNI0OmIYAIIz$O+ & NEiawlfietatsN25ofi6rNHNo, fr) hrAll other Non- Radiolosics wN 250nil @-N NoPreservatirre Added Gross Alpha w.N l,000unl &N HrSO, rb NOther (specify)VN Samplevolume YA I If a presenrative is used, SpecifyT]rpeand Quantity of Pgeservative: Comments /4,:1!. I t t I I I I I t I I I T I I t T I I# I Mill - Groundwater Discharge Permit Groundlvater Monitoring Quality Assurance Plan (QAP) Date: 2.25.O7 Revision: 2 Fage 40 of4l . A?TACSMENT I WTtrTE MESA URAhIT{,IM MILL Description of Sampling Event: Location (wellname, l4U: | 4 ioi,iur, Cdc-rl.g> Orr,h Date and Time for Purging ,and Sampling (if differen$- \n/eItPurgingEquipUsed:{p,*por_baiIerWellPump(ifotherthanBennet)- Samplingr*rt l'frri +k ly pH Buffer7.O ?.o Specific Conductance_ult{l0S/cm Depth to Water Before Purging Prev. Wetl Sampled in Sampling E vent&h- pH Buffer4.0 1.D Wett oepth /.16. / ? Weather cona. aJe.r -^ J 4o t J Exf l. Amb. Temp.(prior to sarnpling ev enr)-:-{ 3- Conductanbe (avg) Casing Volume (V) 4. Well: (.653h) 3" Well: (.367h) pEofWater(avg)r,. . . - ..:":,i,,l Redoi Posentiet (Eh)-- -'TurbidityWell WaterTemp. (avg)- @p*e Conductance 3g Sg nlr 5. g3- Temperaturq t3, tt Temperaturq l?,o7 Redox Potenti* Gn)- 5-35 RedoxPotential (Eh) 552- -Turbidity , 3q Turbidity ,2s @ Purged- - Ti*ffi cd. pureeu- Conductance 3 86 ?l-ondrrcfence ConOu.tari"" 38?,1 r . ps . 55K * (' , ow 5,17 - T"*p"ro* 19,5KTemperature ,3-{A . Redox porenriat reu---t1a- Redox porenriat 8{rg W * ib;J,'.t/ ,#fl Name and T ( ';\.*,' T t MiIl - Grourdwat€r Discharge Fermit GrouadwaterMonitodng Quality Assurance PIan (QAP) Turbidity Date: 11.17.06 Revision: I Fage4l of41 Tur$idity. volume of waterP*rged Y/hen Fierd parameters areMeasured Pumpins Rats Calculation Number of casing volumes evacuated (if other than two) , _ If well evacuated to dr5mess, number of gallons evacuated_ Name of certified Aualytical Laboratory if otherThan Eoergylabs Tvpe ofSamnle $amnle Taken (tlr€I6), SaiurileYolume fiudieqtclf otLer S!Fred(gmle)Pre€ervative Adde4 (circle) t[tiii',ae speclffed VOCs YN 3x40ml YNI HCL YNNuEientsYNl00mlYNJIZSO* Y NII6awMetals&)N 25OmI trDN EIq @NAII Other Non- Radiolosics YN 250mt YN No Preservative aOUeA Gross Alpha YN l,0filmI rN IIASO+ Y NOther (specify)YN Samplevolume IY N hI If a presermtive is use4 Speci$Typeand Quantity of Preservative: T I T T I T t I I T I t t I T T I I I Description of Sampling Location (wellname) W ul Z L DateandTimeforPurging I ln f ^ndSampting(ifdifferent)- Well PurgingEquip Used: -pump or*bailer Sampling Event pHBufferT.Q Specifi c Conductance_uMll0S/cm Depth to WaterBeforePurging - Well WaterTemp. (avg)- Redox Potential (Eh)--* 'furbidity WeatherCond.Ext'l' Amb. Temp.(prior to sampling event)______-::_ Mill - Groundwater Diseharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) Date: 2.25.07 Revision: 2 Page 40 of 4l ' arrac.EMgM 1 WEIITE MESA {IRAB[[T'M MILI- Name and initials Woll Pump (if otherthanBennet)_ Prev. Well Sampled in SamplingEven puBuffer4.o . 4.O - Well Deothr Casing Volume N) 4" Well:.. (.653h) 3" Well: (.367h) ( ...r Timet .-Gal. Purged- conductance 3 L{ 33 oH 5,68 Time:: -- Gal. Purged------r- Conductarice pH--. Temnerature RedoxPotential@h) 485-_ RedoxPotential@h) TurbidiU..&.6 Turbidity. Tinre:-Gal. Purged Conductance Temperature. Time:,. , Gal.Purged- Conductance Redox Potential (Eh),-. . . _ L-j; Redox Potential (Eh)----- -- Mill - GrounrtwaEr Discbarge Farrnit &oundv,reter Monitoring Quafity Assurauce Plan (QAP) Turbidit5q Date: tL.n.A6 Revision: I PageAl of41 Turbidity volume of waterP,rged when Field Farameters are Measured Fumgine Rats Calculation FlowRafe (Q), in gpm.5/60= =T =ZYIQ= Number of casing volumes evacuated {if other than two)_ If well evacuated to dr5mess, number of gallons evacuated_ Name of certified Analytical r,aboratory if otherThan Energylabs Time to evacuate turo casing volumes (ZV) TVpe of Samole Samole Taken (circle), tiemDle Volume fiudtaieif other fiItered (circle)Fresersative .ddded- (circle) thdiiai specified below) vo&(9N 3x40ml Ytr HCL 1fi mNutrientsYNtOOmlYNEzSOr Y NHdawMetalsd)N 25Oinl ff)N Jil[a5 & NAII Other Non- Radioloeics YN 250mI Y'N No Preservative Addsd Gross Alpha YN l.000ml YN -EzSoa Y NOther (specify)YN Samplevolume YN N If a preservative is use4 Specigtlpeaad Quantity of Preservative: I T T I I I t I t t t I T I t I t I t I Mill - Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) Description of Sampling Event: Date: 2-25 -47 Revision: 2 Page40 of 41 ATTACHMENT 1 WHITE MF,SA I'RAMUM MII,L Sampler Name and Date andTime forPurging I ','' { ^nd Sampling (if different)- Well Purging Equip Used: y'pump or-bailer Well Pump (if other than Bennet) _._ samplingevnt flor..r-l.lI Prev. Well Sampled in SamplingEvefi NbJ-lvl pH Buffer?.0 pH Buffer4.0. Specific Conductance_uMHoS/cm Wett oepth , I3,?. 5-- DepthtoWaterBeforefurgine 7?,.55 CasingVolume(V)4"W"ll: (.653h) 3" Well:----__ ____(.36Th) oH of Water (ave) . r:;r:, :: i. Redox Potential (Eh)----JurbidityWell WaterTemp. (avg)- WeatherCon d,9.rt,rlrc;le.i./ ulJ Extll-Amb. Temp.(priorto samplingeve$-l):.;l Conductance 1146 Conductairrc pw 5.3€ Temperature /r.O3 *rr*pu*rrn I l- t$- Redoxpotential'(Eh)--51-3- RedoxPotentiat @h', 41 3 - ru*ioity. 3I),O rurbidity 13, g Conductarrc" 4Ol3 . Conductance.17 Bs t *p"*** IJ-65 RedoxPotential CeD* RedoxPotential CnUl, ' Lt99 ev 5.3K - te*perature '' I3. 6 3- ' . t--.,; 1.1{Lt{o'oJ,\y MilI - Grouadwuter Discharge Pennit Oroundwater Monitoring Quality Assurance PIan (QAP) Date: ll-fi.A6 P.evision: I Page4l of41 volume of l[vater Purged vchen Field Fararaeters are Measured PumginF Bgte Calculation FlowRate (Q), ingpm. 5160 = = Number of casing volumes evacuated (if other than Time to evacuatelwo casiqg volumes (ZV) T =ZYte= cxf,ss ,-=' "J If well "vuruutid to dryrness, irilfrUer of ga[ons evacuate{_% Name of c-ertifisd Analytical Laboratory if other Than Energy Labs';!.iri,,,"ij. BpsSfSample Sldrde T,akqr (ciicle) SamrileVolume findicnteiibthbr Eliltcred (circle)Presersative Added (eincle) thiiiiias,bpeEiffqd below) VOCS YN 3i40ml ECI, Y NNuhientsYNl(Xl ml YN -ffOr Y NIldavyMetatso0N250fr,1 J2N E{o' 6D N41., Other Non- Radiolosics YN 250mt Y'N No Preservative Added Gross Alpha ,NI.000 ml g)N II2S04 dOther (specify)YN :'T'uY',""YN If a preservative is used SpecifyTlpeand Quantity of Preservatiye: T I I Mill - Groundwater Discharge Permit Groundwater Monitoring Qualiry Assurance Plan (QAP) Dare: 2.25.07 Revisioa: 2 Page 40 of4l T I I I I I - atTACgh4NT 1 WTflITE MESA URANM'M hdILT, Sr{ELD DA$$.fIgOTRKSIItsET FOR GITOUND WATER Description of SamplingEvent: ,,'\ a^...e-,y _ SamplingEvent Locarion (*ettno*r't W- 6.5 *. t mil, ,nurur, C,kr?s &rl Date and Time for Purging WelI PurgingEquip Use& and Sampling (if differen Jump or _bailer Well Pump (if other than Bennet)_ Prev. Well Sampled in Sampling nvent NtJ--lf pH Buffer La , . \,n pH Buffer4 o ?.b * SpecificConductance-uMH0S/cm Well Deprh Depth to water Before pureing--?.-?o55-- casing vorume (v) 4" vtreil:35, gg (.653h) 3" Well: (.367h) Well WaterTemp. (avg)_Redoi Potential (Eh)-Turbidity _ WeatherCond.grlsl Ext'l"Amb. Temp.(prior to sampling event) I I I 0"c {tl , Time:- Gal. Purged_ Conductance ... oH Temperature Redox Potential Turbidity. Time:. ,..,-Gal.Purged--* -_ Conductarice ,.. ,. r - oH Redox Potential (Eh)_ Turbidiw t I T t I I T Time:- Gal. Purged Conductance- Time: Gal.Pursed Conductance Temperature Temperature: Redox Potential (Eh)-Redox Potential (Eh)- t-l T l., IWII - Gmuadwnter Dischmge Peranit Oroundwater Moaitoriag Quality Assurance PIan (QAP) Date: !.1.17.06 Revisior"- I Page4l of4tr furbiditl4 volupe of wa&ar Rrged when Field Parameters are Measured- Pumpins Bate Calculatiog FlowRate (Q), in epm.5/60= = Timeto evacuatetwo casiag volumes (2v) T =ZYIQ= Number of casing volumes evacuated (if other than trro If well €vacuated to drlmess, number of gallons evacuated_ Name of Certified Analytical Laboratory if Other?han Energy Labs. TYpeofSamole Saime.lg Take[ fcircIs) SamuleVolume Gndicateif other E,Xltered (circle) Freselsativ,e Added (c{rele) ilfiri,as spccifietl helow) VOCs YN 3x40nrt YN HCL YN Nutrients YN 100mI YN II2SO1 Y NIleawMetalsYN25A'tnl YN HNO3 Y NAtl Other Non- Radiolosics YN 25Oml Y'N NoPreservative Added Gross Alpha YN l.000ml YN HzSOa Y N Other (specify)YN Samplevolume YN Ifa preservative is use{ SpecifyT5rpeand Quantity of Preservative: I T l16 l*w Mi[ - GmundwaterDischarge Permit Grounrlwater Monitoring QoutirY ett**"t Ptan (QAP) Date 2.25 -07 Revision: 2 Page 40 of4l I I t t I t I I I ,.1,,'I t I arrA,cryyrI#[t=''-nlruma MILLWffiIlE I'flESA UR^A DareandTimefornuging ?.?0 0d andsampling (if differcnt} Nl* -' Welt purgin' Eqoip *ttt*::.uoiter Wen Pump (if other unvemeilDeLriafr/' SamplingEve , i Prev1*,,,el1SufodlCrnSaqrplingEvent'.Vf4- ptlsvnerts 7'0 Specific cooa*tnoo @7, l,Y@$f* Depth to Water Bsfo'" furgrng'J-* :{"J ;;;; ur.me (CI-f'-1v]r t' I & Es':ra::P ConductrinLe @fei J llWt" . '|-t l' ,' 5,b0 ',"' .p$d.Water(avg)-'-- irtaid*t ri@rs:st'*iai'r " 1 l1T:T; :::ffi ;-,*;1 ffi l;"ffi ',-, * r z 3" Welh (367h) Westher I t"^wr** 14.10 RedoxPotenti *teL * bl - Redox Potential tgh, -t*' LtlTurbiditY " t ":r,xaitirW- ," t/l '- (i, t"*p"*tur" l3'70 - TI l'i*a :il:.,,j; l_X:i. ,: ,t:l:i:: d';. % condwtanc' 3 8'{?Cordort^,'- 3 I3{ pw {'tL temPerature 5RedoxPotmtial (Eh)=r-RpdoxPotenti,tff$ S:lt ' ' Lt C4' {*,,L.- n i I L-;; {*e5,,,,'l b, T t' Mill - Grouadwata Discharge Permit Cnoundntater Moaimriag Quality Assurance Plan (QAP) Dare: 11.17.06 Revisiou I Fage,Al of 41 Turbidity - _Tltrbidity Volumeof WaferPurged Pumping Rab- 9alculatio_ u FlowP.ate(Q), ing?m.5160= =. - "33 Timc to eyacuatqt$/o casirg volumes (2V) T =ZYIQ= 47 ^, n . Numherof casing volumes evacuated (if other than If well evacuated to dqmess, number of gallons evacuated___a,ag_\ Name of certified fuarrical Laborat6ry'if other Than Eaeryy rabs.,vl* tl(,iarruuu^, TYneofSbmsle Sariinle Takin (ciitlo)., I'Iltepqd (Ercle)Frecervative Sdded(ctrcle) *,,i:,:,.::: v,o(k'YN 3x4O,itil YNN.ECXL YN,NiiEients YN l00rnl YN Hz$O4 Y NEdnWMetalsN)N 250frt,..Y,) N IINOr rrY) r.tAIt Other Non- Rarlioloeics YN 250fl Y'N NoPneservative Added ,,Gms$Aloha YN t.m0 ml YN HzSOu Y NOther(speci$)YN SaEpIevolume YN Y Ifa preservative is use4 SpecjflrTlpeand Quatrtity of Preservative: 6 a.'Ja eS{ t I t I I Mill - Crroundwater Discharge Permit Groundwater Monitoring Quality Assurance PIan (QAP) Description of Sampling i' ATTACHMEi\W1 WEIITE MESA URAITITt'M MILL Date: 2.25.07 Revision: 2 ?age40of 41 I I t t I I I I I I I T I T . j ':.:: 6 Extll.Amb. Temp.(prior to sampling even qJd__-U_ Tr*pr*wn I 2,4i RedoxPotentialfeh) 5 "i'S- - Turbidity tl. t{ Locarion(wenname) rkru 3A i ilffiJ:l, i*rarr 8l.- .ht,^,. DateandTimeforPurging ,9.2A.0t ,,nasampling (if drtferent) arla.. , _ well PnrgingEquip used:Epump or-bailer Iveil pump (if other than nemeilj,diL*fra/ Sampling , Well Sarypled in SamplingEvent-A_N,J4 pH Buffer7.a---j-. O olrBuffer4.O q'O r: - SpecificConOuctancell -qryft.rg,p , : SrelliDepur ,, , {3,1,,,{, ,_' ':- Depth to waterBefore purein&-Zf-jl- casing votume (v) 4' weil:-S{r!y'* (.6s3h) 3" Wetl:_(.362h) pHof,Iilater(av$ . .S;2 Y ,.. ',.t. , : .x&;i3.rni e-r,r <{Zru rriairy jLZWellWaterTem n.**r@ Werlther Con &8.€4J)^/,@-_thoy'.t, rttV cio",f. Corao.An" ..- t conA**;u ,. . pn. 5,€ p Temwrfixe l), 4 - ,, l Redox PoEntist (Eh)--$- 7.5--- Turbidity.lg "I Time il? Ca.P*g"UE Conductarce--JlZ nH 5'3 f te*p**turu i3, lA - Redox Potential (Fh)' SI7 t.i I uab t I ] iiii Mill - GroundwaterDischarge Permit Grourdwaer Uloaitoriug Quality Assurance PIan (QAP) Volumeof WaterPurged Pumpine Rate C,Alculation FlowRate (Q), ingpm. Date: 11.17.06 Revision: I Page4l of 4,1 Sl@= = 4'?.-)J Number of cosing volumss evacuaM (if ofter than tsvo)j;_l( V Time to evacuate two casqg volumes (2V)r=ivte= 0 t7 fr,**_t si, itrt *-^ If well evacuaEd to dr;mess, numher of gallons evacu atfrd__ee_ Name of certified Analpical r-aboramry.if orher Than Energy Labs . -.o,rzra -Tvneof Samrle Sirimtle Taken (eiiclc) , : W Filtered (dq*ef PrueryativeAdded(circle) rVOCs YN Jxltttmt YN\.HCL Y NNufientsYNI0OmlYN-SO+ Y N,86[wlVtreals ,)N 145UitrI ,UN ryP. --@-N,Ala Or&er Non- Radiotosics YN 25Oml y'N No Prcservative AddCE ,GmssAlphs N t.0mmI g)N IIzSOa & N,Other(specify)YN uamplevoruttle YN If apmrervative is use4 Specifyt],peand Quantity of Ppsewative t trtuL,r\Aq^tgg, ;tlt'cAo{ , qaOSi I t T T T T I I I T I t Mill * Grounduater Discharge Perrnit Groundwater Mouitoring Quality Assurance Plan (QAP) Description of Sampling Datn; 2,25.47 Revision: 2 Page40 of 4l ATTACSMEM}-I WE{XTE MESA E'RANIT'M MILL trTI Temnerature Tilnet,,e..1tS, ._Gal.Purge_d__-_*_ . * Conductririce . r - Turbidity DH.r Temperature Locarion (werr name) ../ra.c,rj 65 . 'iffillllu ioirila, i?Vr,^t Pe.l*r-r lVell W'ater Ternp. (avg)_-t, t q _ T ime:.-tltl--Gal, Purged Conducknce Redox Potential (Eh)_ Turbidity. Date andTime forPurging { - r r,r .Jr6 _and Sampling(ifdifferent),.,/r.t We[ PurgingEquip Used: $pu*p or-bailer, WCII rump (if other tt a.genlrel \rJik-&.t samplingEvent {Ur*:!Ll-{ I hc,, I at&u. wglt sampted in sempli ng$vent */a . p[ButferT.O-31Q SpecificconOustance 'eL -ulvh{OS/cm WellDepth= z{.2,+ - ; _, ,, ,,:, ., ,. Depth to Vy'ater Befo rePw5inL- z,/ 4_- Casing Volume (V) 4" Well:__ , t rr__:{.653h) 3" WeIl: .- _(.36?h)Condu0tance (avg : plf ofWater (31u1l n, - .,. , .' i. RedoiPotentia@npA:furbidity &t?r weathercond- n /r. . Extl-'Amb.Temp.(priortosamplingevent)________ ]''-. q.o I t I I t t T Titw:p la__Gal. Purged Time: lln Gal. Purged_ Conductance .. Redox Potential (Eh) Conductance Temuerature Redox Potential (Eb)- - \i)* plJ,&, ( tvtD 3z ! .,l:l Mill - Grouadwafti' Discharge permit Crrouad*ater ll&aihring Quality Assurance PIan (QAP) Date: 1L.17.A6 P"euision: I Ttubidity. . -:-*- _ ftdoidiry___-: Volumeof WaterPurged ?age(l of41 Pugping Rate Cglculation FlowRate(Q), ingpm.s/6o= -=*_' , 33 Time_ioevacuate two cssrng volumes (2V) T =ZVIA= i,./*]\ Nrmberofcasingvolumesevacuated(ifotherthar two) ptn, _ If well evacuatcd to dryness, number of gallons evacuatet' -*1-.Name of certified Analytical Laboratoryif other Than furr8x hb*+ F-ypeofSamnle Saiiinle Taken [ciir:lc)., I|[p.g ], Ulrlr.l r -i' 1' :. -l'i ti--' Eiltered (circle)P$eselrr&tive.{dded (cl{cle)' ^..1, ,YO&YN 3xrt0 mI YNT HCL YN:Nukients YN lfilml YN HrS-Or Y NEeawhfletats@w25O'r,l u)N Eilor 6 NAll O&er Non- RaOiolosicE YN 25Aml Y'N NoPresewativeAdded ,GrossAlpha IrJ.N 1.ff)0ml bN -Ezso+ (V N.Other(speciff)XN lSamplevolu&e IY N If a preservative is used, SpecifyTsrpeand Quantig of Preseryative: t I T T t I I T I T I T T I T Location (*"trnu*q *tw il t -ffiIilo n{*, i?yn ,,. l*l^rr - Dateandrime torPurglu,g 2' 2A f\f andsampling(ifdifferentl arlr+ _ welt Purging Equip used &*mp or -naiter well pump (if other rhan Br*r0l*d--io*+ Sampling Prer. Wlell Sampled in Sampting WexUMALS Z pH Buffer 7.0-L.0-nHBuffer4.0 4 O Specific Conductance-4" L _uItiHOS/cm well D,eprh !: , , 12,{ ,{3 . Casing Votume (V) 4' Well:_ - _J.653h)Depth to WaterBefore Pwgn| L 3,'WeIl: _ . (:362h) Conducfance (a p.E,of:.WBter : ; :r:- ta::- . .: . .:.: ,.t: I Mill - Groundunater Discharge Permit Groundwater Monitoring Qualiry Assurance PIan (QAP) Description of Sampling Date: 2.25.A7 Revision: 2 Page 40 of4l ATTACT{MENTTl WEMTE MF^sA, I'R^ANTUM MILt P**f *T Time:-Ll2L- - -O*.Pureed__ ^t/'rJ coodu"tuo"" 5J7i-- w s 6/ r"*p"*n* /3.77 RedoxPotential(Eh)&Redox Potential (Eh) rurbidity S , 8l Turbidity TinerlY il?, -,-Col. f.*e"d:--_-- ._ Conductarice / . T I t I Time:i!//A -Gal. Purged_Time: at,(rt _Gal. Purged ConductanceConductance Temperature. RedoxPotential (Eh)- t:l Redox Potential (Etr)- - __----___ Mill - Crourdwater Discharge permir Crouadvrater Monitoring Quality Assurance PIan (QAP) Volumeof WakrPurged P ,umpingRqte C, alculation FIow Rate (Q), in gpm.5/60= = .33 Date: 11.17.05 Revision: I Page4l of4l Time to etacuate two casitrg volumes (2v)T=ZVIA= Ait tr'-- Number of casing volumes evacuabd (if other than If weII orracuated b dqmess, number of ga[ons evacuat€d_---_% Name of certified Analytical Laboratory if otherThan Energylabq- TVueofSamnle Saimnle Tqken(did6)', $aihiileVolumeffiffiffiE;frrdEffi Bittered (cir$e)Preeetr+five Added (circle) Ecr. &) N.VOCs 7N 3x4O'ml Y (r\) 1.iNutieffs YN l0Oml YN 4zS.Oo Y NHCawMetals2N250frI,'x) N Iit(or ff N'All Other Non- Radiologics YN z)umt YN NoPreservative Added GroesAlpha YN 1.000mI YN II2SOa Y NOther(specigf YN *rn*:*.YN If apreservative is used, SpegrfyTypq4qd Qrautity of heservative: e, Att&*r*,* t ohloca-rogvw, L\rZl^16.ofvtan;)a **s I I t t @ ,zlfldFWZantrzt ENERGY LABORATORIES, lNC. * 2393 Salt Creek Hwy (82601) " PO Box 3258 . Casper, WY A2602Toll Free 888.235.0515 - 307.235.0515. FAx 307.234.1639 * casper@energylab.com * www.energylab.com Glient: Project: Lab lD: Clienl Sample lD LABORATOE Y ANALYTICAL REPORT Denison Mines (USA) Corp / January Groundwater /co8o2oo3o-ool l/MW14 L Beport Dale: 03/03/08 Collection Date: 01/29108 DateHeceived: 02101 108 Matrix: Aqueous Analysis Date / By MCUQualifier RL OCL MethodResult Units 10 0.30 2200 ug/L65.1 ug/L T I I I I I I I I I t T METALS. DISSOLVED Manganese Uranium E200.8 E200.8 02115108 22:10 / sml 02115/08 22:10 / sml t T t Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. I I I I EMW ,DIIIJIFVJZiIF,E3i, ENERGY LABORATOBIES, lNC. * 2393 Salt Creek Hwy (82601) * PO Box 3258 . Casper, Wy e2602Toll Free 888.235.0515. 307.235.0515. FAX 307.234.1639 * casper@energylab.com * www.energylab.com LABORATORY ANALYTICAL REPORT Client: Proiect: Lab lD: Client Sample lD Denison Mines (USA) Corp / January Groundwater /co8o2oo3o-oo2 /MW 32 l/ Repofi Date: 03/03/08 Collection Date: 0'l/29/08 DateReceived: 02101lA8 Matrix: Aqueous Analyses Result Units Qualifier RL MCUOCL Method Analysis Date / By ug/L ug/L ug/L ug/L pCi/L pCi/L I I I I I t I t t t I T METALS. DISSOLVED Cadmium lron Manganese Nickel HADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Bn & U Precision (t) 1.32 7920 4950 62 5.3 0.9 0.50 50 10 20 1.0 E200.8 E200.7 E200.8 E200.8 E900.1 E900.1 02116108 00:32 / sml 02/19lOB 17:32 I cp 02116108 00:32 / sml 02116108 00:32 / sml 02113/08 19:48 / crw 02113108 19i48 lcvv t I I Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrix interference. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. t I I t ffiEEOEreEW ENERGY LABORATORIES, lNC. * 2393 Salt Creek Hwy (S26Ot) * PO Box g2SA . Casper, Wy g2602 Toll Free 888-235.0515 . 307.235.0515 - FAX 307.234.1639 * casper@energylab.com * www.energylab.com LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp . January Groundwater /c08020030-003 . / MW26 Y Revised Dalet 04114108 Report Date: 03/03/08 Collection Dalet 0'l 129108 DateReceived : 02101 108 Matrix: Aqueous Analyses Result Units Qualitier RL MCUOCL Method Analysis Date / ByI I I T I t I I I I I I METALS. DISSOLVED Manganese Uranium VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene-d4 Surr: Dibromolluoromethane Surr: p-Bromof luorobenzene Sur: Toluene-d8 853 20.1 ND ND ND 830 ND ND 15 ND ND ND 103 99.0 109 97.0 ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L %REC %REC %REC %REC t0 0.3 20 1.0 1.0 50 't.0 20 1.0 1.0 1.0 1.0 80-1 20 70-1 30 80- t 20 80- 1 20 ug/L ug/L E200.8 E200.8 SW8260B SW8260B SW8260B SW826OB sw8260B SW8260B SW826OB SW826OB SW826OB sw8260B SW82608 SW8260B SW826OB SW8260B 02116108 00:37 / sml 02125108 13:29 / sml 02104108 19:16/dkh 02/04108 19:16 / dkh 02104108 19:16 /dkh 02104108 19:57 / dkh 02104108 19: 16 / dkh 02104/08 19:16 / dkh 02/04/08 19:'16 / dkh 02/04108 19:16 / dkh 02104108 19:16 / dkh 02/04/08 19:16 / dkh 02104108 19:16 / dkh 0210410819:16 /dkh 02/04108 19:16 / dkh 02104/08 19:16 / dkh I I I Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrix interference. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. I I li,r?ri,.TIZE@@ ENEBGY LABORATORIES, lNC. " 2393 Salt Creek Hwy (82601) * PO Box g21g . Casper, Wy A2602Toll Free 888.235.0515. 307.235.0515. FAX 307.234.1639 * casper@energylab.com . wwi.energylab.com LABORATORY ANALYTICAL REPORT I ;Hl, HJ:JXJff;#:,:)'"* Lab lD: C08020030-004 Report Date: 03/03/08 Collection Date: 01/29/08 DateBeceived : 0210'1 108 Malrix: Aqueous I Client Sample lD MW 65 MCUResult Units Qualifier RL OCL Method Analysis Date / ByI *"'* I METALS - DrssoLVED Cadmiumt [,,l:i'*. I ::3i:ilx::tT?;3',?'o"'o 1.58 ug/L 0.50 E200.8 02t1610A 00:42 / smt7470 ug/L D 50 E2OO.7 O2|rgClS 17:SB I cp4920 ug/L60 ug/L 4.4 pCi/L Gross Alpha minus Rn & U Precision (t) 0.9 pCi/L 10 E200.8 OZ/16t08 00:42 / smt20 E200.8 02tt6fi| 00:42 / smt 1.0 E900.1 lZtlgt}B lg:48 / crwE900.1 02t19t0919:48 / crw I I T I t I I I I I B:ffi11."", lf.iHliiJT,l#lilJj D - RL increased due to sample matrix interference. I t MCL - Maximum contaminant level. ND - Not detected at the reporting limit. t ffi lzEfriFz4?atFt7=' ENERGY LABORATOBIES, lNC. * 2393 Salt Creek Hwy (82601) " PO Box 3258 * Casper, Wy g2602Toll Free 888.235.0515. 307.235.0515. FAx 307.234.169b * caiper@energytab.com * vwvi.energytab.comt I t LABORATORY ANALYTICAL HEPORT Client: Proiect: Lab lD: Client Sample lD Denison Mines (USA) Corp ./January Groundwater ,/c08020030-005 ,/ Trip Blank / Report Date: Collection Date: DateReceived: Matrix: 03/03/08 01t29t08 02lo1tog Aqueous Analyses Result Units Qualifier MCL/OCL Method Analysis Date / Byt I I t t I I t I I I I VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chlorolorm Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Tetrahydrofuran Toluene Xylenes, Total Su n: 1,2-Dichlorobenzene-d4 Surr: Dibromof luoromethane Sun: p-Bromolluorobenzene Surr: Toluene-d8 ND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/LND ug/L ND ug/LND ug/L ND ug/LND ug/L 102 %REC100 %REC111 %REC 98.0 %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 10 't.0 1.0 80-1 20 70-130 80-1 20 80-120 sw8260B SW826OB SW826OB sw8260B sw8260B SW826OB sw8260B SW826OB SW826OB sw8260B SWB26OB sw8260B SW826OB sw8250B SW826OB 0210/.10815:58 / dkh 02104108 15:58 / dkh 02104108 15:58 / dkh 02104108 15:58 / dkh 02104108 15:58 / dkh 02l04lOA 15:58 / dkh 02104/08 15:58 / dkh 02104108 15:58 / dkh 02/04108 15:58 / dkh 02104/08 15:58 / dkh 02104108 15:58 / dkh 02104108 15:58 / dkh 02104/08 15:58 / dkh 02104108 15:58 / dkh 02104108 15:58 / dkh I I T Report Definitions: FIL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. ENEBGY LABORATORIES, -lNC ' 2393 Salt Creek Highway (8260/) ' PO. 9ox 3258 . Casper; WY 82602 Toll Free 888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com'www.eitergylab,com ANALYTICAL SUMMARY REPORT March 03, 2008 Denison Mines (USA) Corp 6425 S Hwy 191 Blanding, UT 8451'l Workorder No.: C08020030 Quote lD: C1640 - POC Wells / Monthly Groundwater Sampling Project Name: January Groundwater Energy Laboratories, lnc. received the following 5 samples from Denison Mines (USA) Corp on 2t1l2}Og for anatysis. Sample lD Client Sample lD Collect Date Receive Date Matrix c08020030-001 MW 14 01 129108 00;00 02/01 /08 Aqueous Metals by ICP/ICPMS, Dissolved c08020030-002 MW32 01 l29lOA 00:00 02/01/08 Aqueous Metals by ICP/ICPMS, Dissolved Gross Alpha minus Rn222 and Uranium c08020030-003 MW26 01?9|AA 00:00 0?01/08 Aqueous Metals by ICP/ICPMS, Dissolved SW8260B VOCs, Standard List 01129108 00:00 02/01/08 Aqueous Metats by tCp/tCpMS, Dissotved Gross Alpha minus Rn222 and Uranium 41129108 00:00 0201/08 Aqueous SW8260B VOCs, Standard List c08020030-004 MW65 C08020030-005 Trip Blank T I I T t I T T I I T I t T T I I I 4s aPqropriate, any exceptions or problems with the analyses are noted in the Laboratory Analytical Report, theQA/OC Summary Report, or the Case Nanative. lf you have any questions regarding these tests results, please call. ReportApprovedBy: & STEVE CARISTO|{ I ENEfrGY LABOfrA|ORIES, lNC. ' 2393 Salt Creek Hlghway (82601)'PO. 1ox 3258 ' Casper WY82602 Toll Free 888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 ' casper@energylab.com'www.energy/ab.com t I QA/QC Summary Report Client Denison Mines (USA) Corp Project January Groundwater Revised Date: 04/14108 Report Date: 03/03/08 Work Order: C08020030IAnalyteResult Units RL %REC Low Limit High Limit RPD RPDLimit Qual T I I I Method: E200.7 Sample lD: LFB-TM lron Sample lD: LRB lron Sample lD: C08010814-001CMS lron Sample lD: C08010814-001CMSO lron Laboratory Fortilied Blank 1-98 mg/L Laboratory Reagent Blank ND mg/L Sample Matrix Spike 9.16 mg/L Sample Matrix Spike Duplicate 9.59 mg/L Run: lCP2-C_080219A 99 8s 125 Runl |CP2-C_080219A Run: |CP2-C_080219A 92 70 130 Run: ICP2-C 080219A 70 130 4.6 0.030 0.046 0.046 Batch: R97126 02119108 11.34 02119t08 12:01 oil1gnE 17.12 02119108 17:15 ?0 t I I I T I t I I I T Method: E200.8 Sample lD: LRB Cadmium Manganese Nickel Sample lD: LFB Cadmium Manganese Nickel samplelD: c08020030{01AMs4 Cadmium Manganese Nickel Sample lD: Cadmium Manganese Nickel Sample lD: C08020446{03AMS4 Cadmium Manganese Nickel Method Blank ND mg/L ND mglL 0.0001 mg/L Laboratory Fortified Blank 0"0484 mg/L 0.0496 mg/L 0.0505 mg/L Post Digestion Spike 0.0482 mglL 2.19 mg/L 0.0585 mg/L C08020030-001AMSD4 PostDigestion Spike Duplicate 0.0503 mg/L 2.19 mg/L 0.0592 mgiL Post Digestion Spike 0.0491 mg/L O.O452 mg/L 0.0461 mg/L C08020446-003AMSD4 PostDigestionSpikeDupticate 0,0496 mS/L 0.0431 mg/L 0.0476 mg/L 94 70 130 70 130 93 70 130 Run: ICPMSl-C_080215A 70 130 70 130 95 70 130 Run: ICPMSl-C_080215A 98 70 13090 70 130 82 70 130 Run: ICPMSl-C 080215A 0.0002 3E-05 8E-0s 0.0010 0.0010 0.0010 0.010 0.010 0.050 0.010 0.010 0.050 0.010 0.010 0.0s0 0.010 0.0't0 0.050 97 98 t01 Run: ICPMSl€_080215A Run: ICPMSl-C_080215A 85 115 85 115 85 115 Run: ICPMSl-C_080215A Batch: R97045 02115108 16:25 02/15/08 16:30 02l1SlQB 22:15 A 02115t08 22:2A 20 20A 20 02/1 6/08 01 :38 02116/08 01 :43 20 20 20 4.2 0.4 1.2 0.9 4.8 0.0 Sample lD: Cadmium Manganese Nickel 99 86 85 70 130 70 t30 70 130 Qualifiers: RL - Analyte reporting limit. ND - Nol detected at the reporting limit. A - The analyte level was greater than four times the spike level. accordance with the method % recovery is not calculated. ENERGY LABORATORIES, INC ' 23fi San Creek riighway (52601) ' PO. Box 3258 , Casper, WY 82602 To// Free 888.235.0515 ' 307.235.0515 ' Fax 307.234. /639 ' casper@energylab.con ' www.ehergytab.com QA/QC Summary Report Client: Project: Denison Mines (USA) Corp January Groundwater Revised Date: 04114108 Report Date: 03/03/08 Work Order: C08020030 Analyte Result RL %REC Low Limit High Limit RPD RPDLimit QuaI lUethod: E200.8 Sample lDi LRB Uranium Sample lD: LFB Uranium Sample lO: C08020482.1101KMS4 Uranium Sample lD: C08020482{0lKMSD4 Uranium Method Blank ND mg/L Laboratory Fortified Blank 0.0503 mg/L Post Digestion Spike 0.0549 mg/L 4E-05 0.00030 0.00030 0.1 100 106 106 Run : ICPMS'l -C_080225A Run: ICPMSl€_080225A 85 115 Run: ICPMSl-C_080225A 70 130 Run: ICPMS'l€ _08O225A70 130 Batch: R97338 02125t08 13,07 02t25tO8 fi.1a 02/25/08 15:06 02125tO8 15:14 20 Post Digestion Spike Duplicate 0.0550 mg/L 0 00030 I t I t I t I I I I t T I I I I t T Method: E900., Sample lD: LCS€A-0101 Gross Alpha minus Rn & U Sample lD: MB-GA{101 Gross Alpha minus Rn & U Sample lD: C08020030-O02AMS Gross Alpha minus Rn & U Sample lD: C08020030-002AMSD Gross Alpha minus Rn & U Qualifiers: RL - Analyte reporting timit. Laboratory Control Sample 22.3 pCi/L Melhod Blank ND pCi/L Sample Matrix Spike 24.5 pciiL Sample Matrix Spike Duplicate 24.0 pCi/L Run: G5000W_08021 1 B 106 70 130 Run: G5000W_08021 1B Run: G5000W_08021 1B 91 70 130 Run: G5000W_08021 1B 70 130 't.0 Batch: GA-0'101 02l'13i08 '18:08 02/13/08 18:08 02/1 3/08 1 9:48 02113108 19:aB 24.9 1.0 r.0 r- ND - Not detected at the reporting timit, T ENERGY LABOBATOBIES, lNC, ' 2393 Salt Creek Highway (82601) ' PO. Box 3258 ' Casper, WY 82602 Toll Free 888.235.0515 ' 307.235.0515 ' Fax 307.234. /639 ' casper@energylab.con ' www.energylab.com I I QA/QC Summary Report Client Denison Mines (USA) Corp Project January Groundwater Revised Date: 04/14108 Report Date: 03/03/08 Work Order: C08020030IAnalyteResultRL %REC Low Limit High Limit RPD RpDLimit Quat I I I I I I I I I I I I I I Method:sw8260B Sample lD: 04-Feb-08_LCS_3 Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Sun:'l 2-Dichlorobenzene-d4 Surr: Dibromofl uoromethane Surr: p-Bromofluorobenzene Surr: Toluene-d8 Sample tD: 04feb-08_MBLK_6 Benzene Carbon tetrachloride Chloroform Chloromethane m+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr: |.2-Dichlorobenzened4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: Toluene-dB Sample lD: C08020030-003AMS Benzene Carbon tetrachloride Chloroform rn+p-Xylenes o-Xylene Toluene Xylenes, Total Qualifiers: RL - Analyte reporting limit. Laboratory Control Sampie 5.4 ug/L 5.4 ug/L 4.8 ug/L 4.7 ug/L 11 ug/L 42 ug/L 4.7 ugiL 5.0 ug/L 5.1 ug/L 5,2 ug/L'16 ug/L Method Blank ND ug/L ND ug/L NO ug/L NO ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L Sample Matrix Spike 1000 ug/L 1 100 ugiL 1800 ug/L 1 100 ug/L 1100 ug/L 1 100 ug/L 2200 ug/L Run: GCMS2_080204A'1.0 107 1 .0 109'1.0 97 1.0 94 1 .0 106 20 83 1.0 94 1.0 101 1.0 102 1.0 103 1.0 105 1.0 97 1.0 91 1.0 99 1.0 99 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 100 93 107 97 50 100 50 110 s0 96 50 111 50 112 50 105 50 111 70 130 80 120 70 130 80 130 80 120 Run: GCMS2_080204A 70 70 70 70 70 70 70 70 70 70 130 130 130 130 130 130 130 130 130 130 80 120 70 130 80 120 80 120 Run: GCMS2_0802O4A 70 130 70 130 70 130 70 130 70 130 70 130 70 130 Batch: R96544 02t04108 13:21 02104108 1519 02/05/08 O0:45 ND - Not detected at the reporting limit I ENERGY LABORATOBES, lNC. ' 23% San Creek Highway (82601) . PO. 1ox 32i8 . Casper Wy B2602To// Free 888.235.0515 ' 307.235.0515 ' Fax 307.234./6-39 ''cizsper(ienergy/aO.con . www.eitergylab.coi I I QA/QC Summary Report Client: Denison Mines (USA) Gorp Project: January Groundwater Revised Date: 04/14108 Report Date: 03/03108 Work Order: C08020030IAnalyteResultUnitsRL %REC Low Limit High Limtt RpD RpDLimit euat I I t T t I I I I I I I T I Methodl sw8260B Sample lD: C08020030{!03AMS Sample Matrix Spike Surr: 1 Surr: Dibromofluoromethane Surr. p-Bromofl uorobenzene Surr: Toluen+d8 Sample lD: C08020030{03AMSD Benzene Carbon tetrachloride Chloroform m+p-Xylenes o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene{4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: Toluene-dB Batch: R96544 02/05/08 00:45 Sample Matrix Spike Dupticate 1000 ug/L t 100 ug/L 1800 ug/L 1100 ug/L 1 100 ug/L 1000 ug/L 2100 ug/L 1.0 102 1.0 98 1.0 107 '1 0 99 50 102 50 109 50 97 50 108 50 107 50 101 50 107 1,0 102 1.0 98 1.0 108 1.0 98 02l05lOA 01.27 20 20 20 ?0 2A 20 20 10 10 't0 10 Run: GCMS2_080204A 80 1?O 70 130 80 120 80 120 Run: GCMS2_080204A 7A r30 70 130 70 130 70 130 70 130 70 130 70 130 80 120 70 130 80 120 80 120 1.6 1.1 o.2 2.9 4.4 3.9 3.7 0.0 0.0 0.0 0.0 RL - Analyte reporting limit.ND - Not detecled at the reporting limit Eo 6ifoo .9a IEtr6o E6J -o-EoOlj+o h.tsFe (l,- (Et,(d .b.g Ic->t'-Go fl E;- oifEIEo --c.o!(Jdu(a =E oEgeiE!qorfo:QcfrsXnhEdqGo E3Eoooe-ooE- -OE tr, =50(d 6= =(EtrxEt= gEE0E-oOocOoo F4 -EE 6E e< b dd'"El'tr .cl 9l*E€Iooa€.q EIJE CI>= a.llPo Flo)o -l n €:loc(cE n.9(}'- o E$aEb=t-65 a.9 oOSe-aF.9tr>rd6 6o)oco6El .goc'6 Eo() trLo(,oE tJoo =Irotr -$(, - Ec ttr(E !,o*to -Iortsoc (E?o |H ^)lo I I &(! o- o E ot E(,Jt oo EE .e "E BE e,f; p - o.'v | 6_ ."'E B.gsfl 0 i:'=H- E€ H 5H;#E *4n -*%Z>L2E otn .E \, -* \\ $q$Ys+ ,.hiim ]L\oco 0- o:Ercr-rcq$ fusseorfr'uouela6afi sptgogplo$rcffi4y- oEASIAV:ao,ualouress.lauleluo3lo Joq[un]l o\0' aiu ath EEE o =oCLofi E.q Ei; $EqE Eol JPuJb t_otUHEtrEEglJ- otsoo=*EEE E98xA.=(j'a e6l.ll.eIc!OI.bl8luJIht>u .., {HEq'3 *ftEEHDtr DN t I T I t t T I I I I I T I t I t T I Energy Laboratories lnc Workorder Receipt Ghecklist Denison Mines (USA) Corp Login completed by: Kimberty Humiston Reviewed by: Reviewed Date: Shipplng container/cool€r in good condition? Custody saals inlacl on shipping conlaineilcoolefi Custody soals lntact on sample botiles? Cfiain of custody prcsent? Chein of custody slgned when relinqulshed and received? Chain of custody agreos with sampto labels? Samples ln proper container/bottl€? Samplo containers lntacl? Sulficient samplE volume for indicated tost? All samples received withln holding tlme? Contalne/Iemp Bl ank temperaturo in compliance? Water - VOA vials have zelo hoadspace? Water - pH acceptable upon receipt? NoD NoD NoE NoE No fJ NoE No fI NoE NO EI NoD NoE No fl NoE Not Present I NotProsent D Not Pro$ent EJ 9.4'C On lce No VOA vlals submitted NotApplicable n rffi fi fi ililffi trflxtliltilililtililil c08020030 Date and Time Received: 2/1t200g 10:10 AM Received by: kh Carrier name: Next Day Air Yes Qt Yes [! Yes E Yos EJ Yes Qt Yes Qf Yes [J Yes [t Ye3 EJ Yes Bl Yes B[ Yes EJ Yes g tr Coalact and Cofiefi(ive Aclion Cornmonts; None l; I Ii I li ti li i I ri / Ir l I i t ffi,Z@trreEIH ENERGY LABORATOBTES, lNC. * 2ggg Satt Creek Hwy (S260l) * PO Box g25A * Casper, Wy g2602Toll Free 888.235.0515. 3O7.23S.OS|5 - FAX gL7.2g4.t6Sb . caiperqiirgytaO.com * yyww.energytab.com LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp c08020844-001 MW 14 Report Date: 04/10/08 Collection Date:. 02120108 09:07 DateReceived: 02122108 Matrix: Aqueous MCL/Qualifier RL OCL MethodResult Units Analysis Date / By T I I I I T I T t I I I METALS - DISSOLVED Manganese Uranium 10 0.30 2080 ug/L 64.1 ug/L E200.8 E200.8 02126/08 23:01 / smt 02/26108 23:01 / sml T T I I I I I Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. I WE@E@@ ENERGY LABORATORIES, lNC. * 2393 Salt Creek Hwy (S260l) * PO Box g2SA * Casper, Wy g2602Toll Free 888.235.0515. 307.235.0515 - FAx go7.2g4.tosb - caiper@energytab.com * vwvi.energytab.comt t I Client: Project: Lab lD:7 LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp February Monthly Accelerated Grpundwater Report Date: 04/10/08 Collection Date: 02120108 1 1 :15 DateReceived: 02122108 Matrix: Aqueous c08020844-002 Client Sample lD MW 32 Analyses Result Units Qualifier MCUOCL Method Analysis Date / Byt I I I t t I T t I I t METALS - DISSOLVED Cadmium lron Manganese Nickel RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) ND 7890 501 0 EO 9.2 1.2 0.50 30 '10 20 1.0 E200.8 E200.7 E200.8 E200.8 E900.1 E900.1 ug/L ug/L ug/L ug/L 02/28108 02:36 / smt 03104/08 20:12 I cp 02128/08 02:36 / sml O2/281OA 02:36 / smt 02/27lOB 20:00 / crw 02127108 20:00 / crw pCi/L pCi/L t t I Report Definitions: RL - Analyte reporting limit QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. T I I I ffi,z@re@ ENERGY LABORATORIES, lNC. " 2393 Salt Creek Hwy (S260l) * PO Box 32iB * Casper, Wy 82602Toll Free 888.235.0515 - 307.235.0515 - FAX 307.234.1639 * casper@energylab.com * wwi.energylab.com Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp February Monthly Acceleratey' Groundwater co8o2o844-003 ',/ MW26 / Revised Date: Report Date: Collection Date: DateReceived: Matrix: 04t14t08 04/10t08 021201081'l:33 02t22108 Aqueous Analyses Result Units Qualifier MCUOCL Method Analysis Date / ByI I I t I I I I I I T I METALS. DISSOLVED Manganese Uranium VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloro{orm Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene-d4 Surr: Dibromof luoromethane Surr: p-Bromolluorobenzene Surr: Toluene-d8 1 330 59.2 10 0.s0 20 1.0 1.0 50 'L0 20 1.0 t.0 1.0 1.0 80-1 20 70-130 80-'t20 80-1 20 ug/L ug/L E200.8 E200.8 SW826OB SW8260B SW826OB SW8260B sw8260B SW8260B SW8260B SWB26OB SW8260B SW826OB SW8260B SW826OB SW8260B SW826OB 02/26/08 23:09 / sml 02126108 23:09 / sml 02129108 16:08 / dkh 02129108 16:08 / dkh 02129108 16:08 / dkh OZl29l08 16:47 ldkh 02129108 16:08 / dkh 02129108 16:08 / dkh 02/29/08 16:08 / dkh 02129108 16:08 / dkh 02129108 16:08 / dkh 02129108 16:08 / dkh 02/29108 16:08 / dkh 02/29108 16:08 / dkh 02129108 16:08 / dkh 02/29lOB 16:08 / dkh ND ug/L ND ug/L ND ug/L 580 ugilND ug/L ND ug/L15 ug/L ND ug/LND ug/L ND ug/L 1OO %REC 90.0 %REC 107 %REC 99.0 %REC t I t Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrix interference. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. T I t T Effi ,Ttitdizfit tFrrit, ENERGY LABORATORIES,INC. * 2393 Salt Creek Hwy (52601) * PO Box 9258 * Casper, WY A2602Toll Ftee 888.235.0515. 307.235.0515 - FAX 307.234.1639 r casper@energylab.com * www.energylab.com Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp February Monthly Accelerated Groundwater c08020844-004 MW 65 Report Date: 04/10/08 Colleclion Date: 02120108 1 1:15 DateReceived: 02122108 Matrix: Aqueous Analyses Result Units Qualifier RL MCU QCL Method Analysis Date / ByI I I t I I I I I I t t METALS. DISSOLVED Cadmium lron Manganese Nickel RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) 3.94 7390 5000 62 8.6 1.2 0.50 30 10 20 1.0 8200.8 E200.7 E200.8 E200.8 E900.1 E900.1 ug/L ug/L ug/L ug/L 02128108 02:42 / sml 03/04/08 20:16 / cp O2l28lOB 02:42 I sml 02128108 02'.42 / sml 02/27/08 20:00 / crw 02l27lOB 20'.00 / crw pCi/L pCi/L I I I Report Definitions: RL - Analyte reporting limit QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. T ffiIZ@EE@ ENERGY LABORATORIES, tNC. - 2393 Satt Creek Hwy (S260l) * PO Box 3258 * Casper, Wy g2602 Toll Free 888.235-0515. 307.235.0515 - FAx 907.234.1ffib'casper@energylab.com * M.energylab.comI I I Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp February Monthly Accelerated Groundwater c08020844-005 Trip Blank Report Date: 04/10/08 Collection Dale: 02120108 1 1:33 DateReceived:. 02122108 Matrix: Aqueous Analyses Result Units Qualifier MCL/OCL Method Analysis Oate / ByI t I t I I I I I I T I VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chlorolorm Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Tetrahydroluran Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromof luoromethane Surr: p-Bromolluorobenzene Surr: Toluene-d8 ND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ugil ND ug/L ND ug/LND ug/L ND ug/L ND ug/L lOO %REC 95.0 %REC105 %REC 99,0 %REC 20 1.0 '1.0 1.0 1.0 20 1.0 1.0 10 1.0 1.0 B0-1 20 70-1 30 80-1 20 80-1 20 SW8260B SW8260B SW826OB SW8260B SW826OB SW8260B SW8260B SW826OB SW8260B SW826OB SW826OB SW8260B SW826OB SW8260B SW826OB 02/29/08 14:49 / dkh 02129108 14:49 / dkh 02129108 14:49 I dkh 02129/08 14:49 /dkh 02/29lOB 14:49 ldkh 02129/08 14:49 I dkh 02129108 14:49 / dkh 02129/08 14:49 I dkh 02129/08 14:49 I dkh 02129108 14:49 /dkh 02129/08 14:49 / dkh 02/29108'14:49 / dkh 02/29108 14:49 ldkh 02129/08 14:49 / dkh 02/29108 14:49 /dkh t I I Report Definitions: RL - Analyte reporting limit QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. ENERGY LABoRATaF|ES, tNC. . 2J9J sa/t creek Hlglway (s2601) , po. Box szss . caspeti wy sz60zro// Free 888.215.05ts ' s1zesi.lsff . Fi ibr.iii.ioi'i'Jr)fiiiairiiisy;;i", . wwwenersytab.com I t t I I T I t T I I I I I I I I T ANALYTICAL SUMMARY REPORT April10,2008 Denison Mines (USA) Corp 6425 S Hwy 191 Blanding, UT 845't1 Workorder No.: C08020844 Quote lD: C1640 - POC Wells / Monthly Groundwater Sampling Project Name: February Monthly Accelerated Groundwater Energy Laboratories, lnc. received the following 5 samples from Denison Mines (USA) corp onitzztzgog forinalysis. Sample lD Client Sampte lD Collect Date Receive Date Matrix Test c08020844-001 MW 14 c08020844-002 MW 32 c08020844-003 MW26 o2t2arc8 09:07 02122108 Aqueous Metars by rcp/icpMs, oisiotveo 0212010811:1s 02r2zt08 Aqueous Metars by rcp/rcpMs, Dissorved Gross Alpha minus Rn222 and Uranium o2l2olo8 11:33 02rz2to8 Aqueous Metars by lcp/rcpMs, Dissorved SW8260B VOCs, Standard Listc08020844-004 MW 65 C08020844-005 Trip Btank 02n0rc8 rjs o2tzztoS Aqueous rrr"tars oy ,cirtcpMs, Dissorved Gross Alpha minus Rn222 and Uranium 02120n8l:33 02t22t08 Aqueous SW826OB VOCs, Standard Lisr As appropriate, any exceptions or problems with the analyses are noted in the Laboratory Analytical Report, theQA/QC Summary Report, or the Case Narrative. lf you have any questions regarding these tests results, please call. ReportApproved By:ZA % I ENER,T LABOBATORTES, INC ' 2393 Sa, Creek Hlqlwav (s260t) . po. Box 3258 . Caspeti wy 02602rott Free 888.z3s.0its ' sz7.zss.osts ; iai eoi.iii.i6"ss :'ri;iZi6riiisyffi"b* wwwenersylab.com I I QA/QC Summary Report Client Denison Mines (USA) Corp Projecfi February Monthly Accelerated Groundwater Revised Date: O4l14lOB Report Date: 04/10/08 Work Order: C08020844IAnalyteResultUnitsRL %REC Low Limit RPD RPDLimit QuaIHigh Limit 98 T T T Method: Sample lD: lron Sample lD: lron 8200.7 LFB.TM LRB Laboratory Fortified Blank 1.95 mg/L Laboratory Reagent BlankND mg/L Sample Matrix Spike 0.93 mg/L Sample Matrix Spike Duplicate 0.95 mg/L Run: lCP2-C_080304A 85 125 Run: tCP2-C_080304A Run: lCP2-C_0803044 91 70 130 Run: |CP2-C_080304A Batch: R97667 03/04/08 1 0:39 03/04/08 10:49 03/04/08 19:07 03/04/08 19:10 20 Sample lD: C08020741.001CMS lron Sample lD: C0802074i-{,01CMSD lron 0.030 0.030 0.030 0.030 70 130 1.8 0.5 110 I I T I I I t T t I I Method: E200.8 Sample lD: LRB Manganese Uranium Sample lO: LFB Manganese Uranium Sample lD: C0802OO8Z-002AMS Uranium Sample lD: C08020097-OO2AMSD Uranium Sample lD; C08020844-003AMS4 Manganese Uranium Sample lD: C080208rI4-OO3AMSD4 Manganese Uranium Method Blank ND mg/L ND mg/L Laboratory Fortified Blank 0.0519 mg/L 0.0517 mg/L Sample Matrix Spike 0.0705 mg/L '1.37 mg/L 0.113 mg/L Post Digestion Spike Duplicate'1.38 mg/L 0.114 mg/L Sample Mahix Spike Duplicate 0.0702 mg/L O.O01O Post Digestion Spike Run: tCpMSl-C_0802264 Run: tCpMSl-C_080226A 104 85 115103 85 I 15 Run: |CPMSl-C_080226A 106 70 130 Run: |CPMSl€_080226A106 70 130 Run: tCPMSi€_080226A 70 130108 70 130 Run: |CPMSl-C_080226A 70 130 70 130 3E-05 4E-05 0.0010 0.00030 0.0010 0.010 0.00030 0.010 0.00030 1.2 0.9 Batch: R97361 02126108 13:37 O2l26lOE 13:aa 02126108'tS,30 02126108 15:37 2A 02126108 2316 A 02t261O8 23:24 20A 20 RL - Analyte reporting limit. ND - Not detected at the reporting limit A-- The analyte level was greater than four times the spike level.accoroance with the method olo tECoy€N is not calculaied. I ENEBGY LABORATOBIES, lNC. ' 2393 Sall Creek Highway (82601) . PO. Box S2S8 , Caspeti Wy A2602Totl Free B&B.2ss.1iti ' a07.2ss.0st5 , Fax J1z.za4./63s :riipiidririgyiri;'im , wwwenersytab.com t I QA/QC Summary Report Client: Denison Mines (USA) Corp Project February Monthly Acceleraled Groundwater Revised Date: 04114/08 Report Date: 04/10108 Work Order: C08020844IAnalyteUnitsRL %REC Low Limtt High Limit RPO RPDLimit Quat T I I I I t T I Method: E200.8 Sample lD: LRB Cadmium Manganese Nickel Sample lD: LFB Cadmium Manganese Nickel Sample lD: C08020741-001CMS4 Cadmium Manganese Nickel Method Blank ND mg/L ND mg/L ND mg/L Laboratory Fortified Blank 0.0526 mg/L 0.0521 mg/L 0.0521 mg/L Post Digestion Spike 0.050 mg/L 0.051 mg/L 0.048 mg/L 0.0002 3E-05 8E-05 0.0010 0,0010 0.0010 0.0010 0.010 0.050 0.0010 0.010 0.050 0.010 0.0r0 0.050 0.010 0.010 0.050 105 104 104 101 100 96 97 98 96 3.6 2.0 0.0 Run: ICPMSl-C_080227A Run: ICPMSl-C_0E0227A 85 115 85 115 85 115 Run: ICPMSl-C_080222A 70 130 70 130 70 130 Run: ICPMSl-C_080227A 70 130 70 130 70 130 Batch: R97454 O2l27lAB 14:42 02127108 14:47 02128t08 02:26 02128108 02:31 ?o 20 20 02128108 02:47 A 02128108 02:52 2020A 20 Sample lD: Cadmium Manganese Nickel Sample lD: C08020844-004BMS{ Cadmium Manganese Nickel C08020741{01CMSD4 PostDigestion Spike Duplicate 0.049 mg/L 0.050 mg/L 0.048 mg/L Post Digestion Spike 0.0520 mg/L 5.16 mg/L 0.110 mg/L C080208,I4{04BMSD4 PostDigestion SpikeDupticate 0.0507 mg/L 5.53 mg/L 0.105 mg/L Run: ICPMSl-C_080227A 96 70 130 70 130 97 70 130 Run: ICPMSl-C_080227A 94 70 130 70 130 86 70 130 Sample lD: Cadmium Manganese Nickel 2.5 6.8 4.8 z,o 1.0 r.0 1.0 I t I I Method: E900.1 Sample lD; LCS-GA-0107 Gross Alpha minus Rn & U Sample ]D: MB-GA{107 Gross Alpha minus Rn & U Sample lD; C08020844-0O2All,tS Gross Alpha minus Rn & U Sample lD: C08020844.002AMSD Gross Alpha minus Rn & U Laboratory Control Sample 22.1 pCi/L Method Blank ND pCi/L Sample Matrix Spike 29.2 pCi/L Sample Matrix Spike Duplicate 28.4 pCi/L Run: G5000W_08022SA 105 70 130 Run: G5000W_OAO22SA Run: GS0O0W_OBOZ2SA95 70 130 Run: G5000W_08022SA 91 70 130 Batch: GA-o107 02127t08 20:00 02127tOB 2O:OO 42t27t08 20.00 02127108 20:0A 24.2 T I Qualifiers: RL - Analyte reporting limit. ND - Not delected at the reporting timit. A - The analyte level was greater than four times the spike tevel. lnaccordance with the rnethod o/o recovery is not calculaied. I ENERGY LABORAfiORES, lNC. '2393 SaltCreek Hlg-Qway (52601)' PO. Box 3258 ' Caspen WrA260ZToll Free888.235.0515'307,235.0515'Fax302234.1639 "casperQienergylab.con,www-ehergylab.con- I t QA/QC Summary Report Client: Denison Mines (USA) Corp Project: February Monthly Accelerated Groundwater Revised Date: 04114108 Report Date: 04/10/08 Work Order: C08020844IAnalyteResultUnitsRL %REC Low Limit High Limit RPD RPDLimit QuaI 50 50 50 50 50 I I I t I I I I I I I T I I sw8260B Sample ID: 29.Feb-08_LCS_3 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane 6+p-Xylenes Methyl ethyl kelone Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofl uoromethane Surr: p-Bromofluorobenzene Surr: Toluene-d8 Sample lD: 29-Fob-08_MBLK_6 Acetone Benzene Carbon tetrachloride Chloroform Chloromelhane 6+p-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofl uoromethane Surr: p-Bromofluorobenzene Surr: Toluene-d6 Sample lD: C08020844-003BMS Benzene Carbon tetrachloride Chloroform m+p-Xylenes o-Xylene Laboralory Control Sample 56 ug/L 5.1 ug/L 5.1 ug/L 4.8 ug/L 4.4 ug/L 10.0 ug/L 44 ug/L 4.7 ug/L 6.3 ug/L 4.8 ug/L 4.9 ug/L 15 ug/L Method Blank ND ug/L ND ug/L ND ugll ND ug/L NO ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L Run: GCMS2_080229A 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 80 120 70 130 80 130 80 120 Run: GCMS2_0802294 Sample Matrix Spike 940 ug/L 990 ug/L 1500 ug/L 960 ug/L 940 ug/L 103 1.0 102 1.0 102 1.0 97 1.0 88 1.0 100 20 89 1.0 94 1.0 126 1.0 96 1.0 98 1.0 98 1.0 99 1.0 100 1.0 98 1.0 101 4 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 102 OR 104 98 94 99 90 96 94 80 120 70 130 80 120 80 120 Run: GCMS^_080229A 70 130 70 130 70 130 70 130 70 130 Batch: R97575 02129t08 12:09 A2l29tAB 1a:10 02/29/08 1 8:05 Qualifiers: RL - Analyte reporting limil ND - Not detected at the reporting limit. I ENEBGY LABoRATonEs, lNC. , 2s9J salt creek HlqQway (sz60t) . p.o. Box i2sr . casper wy 02602To// Free 888'235.0515 ' 307.235.0515 ' Fax 307.234. tols ' 'cisperdenergyEi cbn . www.ehergytao.ioi- I I QA/QC Summary Report Client Denison Mines (USA) Corp Project February Monthly Accelerated Groundwater Revised Date: 04/14108 Report Date: 04/10/08 Work Order: C08020844IAnalyteResultUnitsRL %REC Low Limit High Limit RpD RpDLimit euat t I I I T I t I I I I I I t Method: SW8260B Sample lD: C08020844{03BMS Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dlbromofl uoromethane Surr. p-Bmmofl uorobenzene Surr: Toluene-d8 Sample lD; C080208r14-003BMSD Benzene Carbon tetrachloride Chloroform m+p-Xylenes o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofluoromethane Surr: p-Bromofluorobenzene Surr: Toluene-dB Sample Makix Spike 890 ug/L 1900 ug/L Sample Matrix Spike Duplicate 1000 ug/L'1000 ug/L 1400 ug/L 1 100 ug/L 1000 ug/L 960 ug/L 2100 ugiL Run: GCMS2_080229A 70 130 70 130 80 120 70 130 80 120 80 120 Run: GCM52_080229A 70 130 70 130 70 130 70 130 70 130 70 130 70 130 80 QA 70 130 80 120 80 120 50 89 50 95 1.0 101 1.0 91 1.0 'r08 1.0 95 50 100 50 100 50 85 50 105 50 102 50 96 50 104'r.0 99 1.0 85 1.0 106'r.0 98 5-4 0.8 3.3 9.1 8.6 7.4 8.9 0.0 0.0 0.0 0.0 Batch: R97575 02t29108 18:05 02129108 18:44 20 20 20 20 20 20 20 10 10 10 10 ND - Not detected at the reporting limitRL - Analyte reporting limit. ldrloIrll+llE ll$!lcil5 oiilf E;lE ;'lE" I I;EElLghlo-l! rB O) I o; :J .1.-. *E X*If; IE t* rlEE s IEE 8lO>=I gE !- l.E I *IEE tslsE ;ls= 6 IEE ElE: bIEHE IIsE l"*.E.EI h r.,lJlErrt IrE H I B'g,El'c-o s IE IEf,s .s *ESb;9EO SuJ= q)ePr ES TEq -:OP gEE n,!? ooE --+F 6E} Ae9.=eoE5 Eo E €a,IJs -+tl-o -l 0)E'I$o dEEL61OHoxo:E,f*rEo?,OPJEcrFO sr-trE -:(Eio4Ed)ro -=IEHfALO<fr T'EF,FLruG'Eo}Ett5OE*aLafr -or, tloE llrooE trs-ar*(E!H-c(O.5 tHH -- \F$)NNNNN qshIrl tl\\0 kk.. t+ Il$ L..A* 6l ,E,'tN,{Z, a<-U l.l-rH ,fl$l,qlcussE Ns $ Nttt \$ .\ EEELB iq -rA: q- ra \u \\Y rN E,{H\- o2 9;e olHcvttv 3ls ,E<ET\8^, ,ego IessEolE Xuoreleool.pfloslslloSrereffirtg Egglglqy:edlleldureg E sJoupluoc Jo J€qunN E u$ \)q Hu 'K.uf$- O\S isIV't rA fr-c-EE o Lo CL!tgtr9>orE tOeiilJ E> =6,IE osP <a[3, Jcu (\lts.o < ttEeEQEd;tr Eo'-o E.Eo'o I I T I T T I I T t I T t I T I I t I Workorder Receipt Ghecklist Energy Laboratories lnc Denison Mines (USA) Corp Login completed by: Kimberly Humiston Reviewed by: Reviewed Date; Shlpplng container/coolor in good condition? Cuctody saals lntact on shipplng contain€r/cooler? Custod) soals intacl on sample bottles? Chain of custody present? Chain of crstody signed when rellnquhhgd and recelvcd? Chain of custody agross with sample labels? Sampl6s in prop6r conlainer/botue? Samplo conlainors intact? Sufficient sample volume for inclicaled tcst? All eamples recelved withln holding time? Container/Temp Blank lempBrature in complianco? Water - VOA vials have zsro headspace? Water. pH acceplablo upon recelpt? Yos EJ Yes g Yes fl Yes [t Yes [l Yes g Yes gJ Yes [l Yes fl Yes EJ Y6s EJ Yes [t Yes M n Iffi II IIIililN ilil ilililIffi ilIIfl IIil c08020844 Date and Time Received: 212212008 9:20 AM Received by: jm Carrier name: Next DayAir NoE No fl NoE Non NoE NoE NoD NoE NoD NoE No fl N0n NoE NotPr€sent E Not Present I NotPresent [l 0.3'C On lco No VOA vlals submitled NotApplicable tr Contact snd Corr6ctlv6 Action Comments; None ENEHST LAEUHAtUfitEs, tNC, . Z3% belt C|eek Htghway (82601) . PO. Box 3258 . Caspet WYS2602 Toll Free 888.235.0515 ' 302235.0515 ' Fax 307.234.1639 , -casper@energytab.on . www.iheri1ytaO.mn LABORATORY ANALYTICAL REPORT Client: Project: l-ab lD: Client Sample lD Denison Mines (USA) Corp / 1st Quarter Groundwater /c08o3oe21-013 /MW1 Report Date: Collection Date: DateReceived: Matrix: 04t29108 0311910814:37 0312'u08 Aqueous Result Units Qualifiers RL MCUQCL Method Analysis Date / By T I I I I I I I I I t METALS. DISSOLVED Manganese 10 t T I I I I I 0/,12310818:'19/ts Report Definitions: RL - Analyte reporting limit. QCL - Qualig control limit. MCL - Maximum contaminant level. ND - Not deteded at the reporting limit. I ENEPGY LABORATORIES, INC . 2393 Salt Creek Highway (8260A . PO. Box 3258 , Casper, WY 82602 TollFree888.235.05l5 , 307.235.0515 . Fax 302234./639 . casper@energylab.un.wwweitergylab.am I t I Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-014 MW3 Report Date: 04/29/08 Collection Date: 03/19/08 15:30 DateReceive d: 03121 108 Matrix: Aqueous Analyses Result Units Qualifiers RL MCUQCL Method Analysls Date / By ug/L ug/L ug/L ug/L I I I t I I I I t I I I I METALS. DISSOLVED Manganese Selenium Thallium Uranium 1330 13.8 0.90 35.6 10 5.0 0.50 0.30 E200.8 E200.8 E200.8 E200.8 O4nA08 18:26 / ts A4123108 18:26 / ts 04123108 18:26 / ts 0412310818:26 / ts Report Definitions: RL - Analyte reporting limit. QCL - Quality confol limit. MCL - Maximum contaminant level. ND - Not detec{ed at the reporting limit.I t ENEHGYLABORATOHIF!9! INC ._2s9s 9afiQrg9f Htg-tyay(s260t), p.o. Boxs2iS , caspet; wa260zTollFree888.235.0515'307.235.0515. Fax307.234.t03s,'cisper@energytab.cbi:wu,ry.ifriibitab.-mn Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTIGAL REPORT Denison Mines (USA) Corp 1st Quarter Groundwater c08030921-004 MW5 Report Date: 04129108 Collection Date: 03/18/08 1'l:45 DateReceived: 03121 108 Matrix: Aqueous Analyses Result Unlts Qualifiers RL MCU QCL Method Analysis Date / By I I I I I I I T I I I T I I I I t I I MAJOR IONS Fluoride METALS. DISSOLVED Manganese 1.0 mg/L 0.1 10 A4500-F C 03124108 12:12 t bas E2O0.7 03n8n816:05 / cpug/L Report RL - Analyte reporting limit, Definltions: ecL- eualig control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. t ENEncY LABORATOR|ES, tNC. . 2s93 satt creek Highway (a2601) . po. Box s2s8 . casper; wys2602Ton Free 888.235.0515 ' eoziss.osrs : Fax sbi'is4.i65i":riliii6riiilyao.com .wwwenersytab.am I t ! LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1st Quarter Groundwater G08030921-005 MW 11 Report Date: O4l29l0B Collection Date: 03/18/08 14:00 DateReceived: O3l21l0B Matrix: Aqueous Analyses Result Units Qualifiers RL MCU QCL Method Analysis Date, By T t I t MAJOR IONS Carbonate as CO3 /Bicarbonate as HCO3f c^t"iu y/ cnorioe Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ 1S0 C METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium ,Cobalt / Copper / tron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium (nc I / RADTONUCLTDES - DTSSOLVEDV Gross Alpha minus Rn & U Gross Alpha minus Rn & U precision (*) 3 mg/L380 mg/L38.1 mg/L29 mg/L0.6 mg/L10 mg/L 0.59 mg/LND mg/L6.0 mg/L606 mg/L1040 mg/L 7.91 s.u. 1750 mg/L ND ug/LND ug/LND ug/LND ug/LND ug/LND ug/L 2OO ug/LND ugA70 ug/LND ug/LND ug/LND ug/LND ug/LND ug/LND ug/LND ug/LND ug/LND ug/LND ug/L 0.9 pCt/L 0.3 pCi/L D D 1 1 0.5 1 0.1 0.5 0.05 0.1 0.5 2 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 1.0 AC320B A232OB E200.7 A4500-Ct B 44500-F C E200.7 A45OO-NH3 G E353.2 E200.7 E200.7 44500-so4 E 03124108 22:14 I bas 03124108 22:14 lbas 0410110817:51 I cp 04'103108 13:14 I iat 03124108 12:15 tbas 0410110817:51 I cp 0312610811:01 tjat 0312410811:19 / jat 0312810816:08 / cp 04101108'17:51 I cp 03/31/08 11:15 iljtlt44500-H B 03/26/08 1t:04 I dnp 42540 C 03/31/OB 18:20 I dd T I I t T I I t 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 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900.1 04l04lOO 04:31 / ts 04104108 04:31 / ts 04104108 M:31/ts 0/,l04l08 M:31/ts 0r'.l04l08 04:31/ts O4lO4l08 O4:31 /ts 0312810816:08 / cp 0d.l04l08 (X:31/ts 0312810816:08 / cp Ml04lO8 (X:31/ts 0/.l04l08 M:31 /ts 04lMl08 O4:31/ts 04104108 Ot:31 / ts 04/09/08 15:38 / eti-b 04104108 O4:31 / ts O3l28lO8 16:08 / cp 04l04l0g (X:31 / ts 0/,l04l08 04:31/ts 0/,l04l08 O4:31 /ts 04/01/08 13:11/cnrv 0/,l0ll0g 13:11 I cwv' The value under "RL" is rhe Minimum Detectable concentration, not the Reporling Llmlt. Report Definltions: RL - Analyte reporting limit. QCL - Quality clnhol limit. D - RL increased due to sample matrk interference. U - Not detected at minimum detectable concentration MCL - Maximum contaminant level. ND - Not detected at the reporting limit. H -Analysis performed past recommended holding time.t T ENERGY LABORATORIES! lNC ' 2393 Saft Creek HiqQway (s2601) , PO. Box 32SB . Caspq WAz602rotl Free 880.23i.0s15 . s0z2s5.0st5 . rax sozfua.i63i :dirii6rii6ytZlli.,ni .rrdiiiiibiirb.-rv, LABORATORY ANALYTTCAL REPORT I I Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp / 1st Quarter Groundwater /c08030e21-oo5 / MW 11 Report Date: Collection Date: DateReceived: Matrix: 04t29t08 03/18/08 14:00 03t21toB Aqueous Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date / ByI t I T I t I t T I I I I PATA QUALITY /NCeatane (tS) , / Anion=v crtion" Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) 0.721 o/o 28.9 meq/L29.3 meq/L 1930 mg/L 0.910 dec. o/o ND ug/LND ug/LND ug/L ND ug/LND ug/LND ug/LND ug/LND ug/LND ug/LND ug/L102 %REC100 %REC102 %REC98.0 %REC Calculation Calculation Calculation Calculation Calculation sw8260B sw8260B sw8260B SW8260B sw8260B SW8260B SW826OB SW826OB SW826OB sw8260B sw8260B sw82608 sw8260B sw8260B 04107108 13:33 / sw 04107108 13:33 / sw 0410710813:33 / sw 0/,|OT|OA 13:33 / sw M|OT|OS 13:33 / sw 0312410817:'16 / dkh 0312410817:16 / dkh 0312410817:'16 / dkh 0312410817:16 / dkh 0312410817:16 / dkh 0312410817:16 / dkh 0312410817:16 / dkh 0312410817:16 / dkh 0312410817:'16 / dkh 0312410817:16 / dkh 0312410817:16 / dkh $n410817:16 / dkh 0312410817:16 / dkh 0312410817:16 / dkh Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzened4 Surr: Dibromofluoromethane Surr: p-Bromofl uorobenzene Sun: ToluenedS 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 Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the repoffng limit.T T I ENEEGY LABORATO4IES! lttlC. ' 2393 Satt Creek Hig^hway (5260t) , P.O. Box S2i8 , Caspet Wa2602Totl Free 888.2ss.0s/s . J0z.ias.05t5 . rax soiiuioii :Efri6"i"6ytali.ril: *r;r:;;;;Aiii)*, Client: Project: Lab lD: Client Sample lD LABOMTORY ANALYTICAL REPORT Denison Mines (USA) Corp 1st Quarter Groundwater /co8o3o921-Oo3 /MW12 / Report Date: 04/29/08 Collection Date: 03/18/08 04:36 DateReceive d: 03121 108 Matrix: Aqueous Result Unlts Qualifiers RL MCUQCL Method Analysis Date / By I I I I T I t t T I I METALS. DISSOLVED Manganese Uranium 10 0.30 29 ug/L'16.8 ug/L E200.8 E200.8 04104108 04;24 tts 04104108 04:24 fts I I I t I t T Report Definftions: RL - Analyte reporting limit. QCL - Qualig control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. ENERGY LABORATOR_IF_S!_NC '_2393 Saft Qregl Hlg_\way (82601) . PO. Box 3258 . Casper; WY A2602TollFree888.235.0515 ' 307.235.0515 ' Fax 307.234.1639 .'casper@energytai.coi:rwyw.iiirbyAb.com LABORATORY ANALYTICAL REPORT I I Client: Project: l-ab !D: Client Sample lD Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-015 MW 14 Report Date: 04/29/08 Collection Date: 03/19/08 17:17 DateReceived: 03121 108 Matrix: Aqueous Analyses Result Units Qualifiers RL MCU QCL Method Analysis Date / ByI T I I I T t I I I t MAJOR IONS Oarbonate as CO3 /Bicarbonaleas HCo3/ c^t"iu/ chtoride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate / PHYSTCAL PROPERTTES YpH 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 (*) ND 473 500 20 0.2 155 0.12 ND 11.1 332 2270 7.72 s.u. 3/.20 mg/L ND ug/L ND ug/L 0.99 ug/LND ug/LND ug/L ND ug/LND ug/LND ug/L 2280 ug/L ND ug/LND ug/LND ug/LND ug/L ND ug/LND ug/LND ug/L65.8 ug/L ND ug/L ND ug/L 1.3 pCi/L 0.4 pGi/L A232OB p232OB E200.7 A4500-CtB A4500-F C E200.7 A45OO-NH3 G E353.2 E200.7 E200.7 A4500-SO4 E mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L 1 1 0.5 1 0.1 0.5 0.05 0.'t 0.5 0.5 30 0.01 10 5.0 0.50 0.50 25 10 10 30 1.0 10 0.50 10 20 5.0 10 0.50 't00 0.30 15 10 1.0 A4500-H B 03/26/08 17:24 I dnp A2540 C 03/26/08 18:59 / dd 0312410823:28 lbas 0312410823:28 lbas 0411110815:56 / cp 04/03/08 14:45 ljal 03124108 12;54 lbas 0411110815:56 / cp 03/26/08 11:29 I jal O3/24n812:39 ljal 0411110815:56 / cp 0411110815:56 / cp 03/31/08 12:46lljl 04D310818:53 / ts 04123108 18:53 / ts Ml23l08'18:53 / ts O4l23lOB 18:53 / ts 04123108't8:53 / ts 0412310818:53 / ts 0312810817:24 I cp 0412310818:53 / ts 03128/08 17:241 q 04l23lOB 18:53 / ts 0/.12310818:53 / ts 0412310818:53 / ts 04.123108 18:53 / ts 04123108 18:53 / ts 04.12310818:53 /ts O3l28lOB 17:24 I cp 0/.l23l0818:53 /ts 0412310818:53 / ts 03l28lOB 17:24Icp 0/,10110815:00 / crw 0d,l01l08 15:00 / crw TJ I 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 E200.7 E200.8 E200.8 E200.7 E900.1 E900.1 - The value under'RL" is the Minimum Detectable concentration, not lhe Reporting Limit. Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrix interference. MCL - Maximum contaminant level. ND - Not detected at the reporting limit.I T Totl Free 888. 23i. 05 ff : so ziei. 0i r s- : -Fi3'o75si.ENEflGT LAEoRATaRnES, tNC . 2J9S Satt Creek Hlghway (52601) , p.O. Box,rotl Fre e 888. 23 i. 05 t 5 . s0 z irt. on s- : -ii i'oi. nt. i 6ib" :'difri 6, i i6i, o. rl 7!l , P.O. BoxJ2SS . Caspet WA26( @energylab. com . www eiergylab. am . PO. Box32S8 , Caspet WA260Z LABORATORY ANALYTICAL REPORTt t Client: Project: Lab lD: Client Sample tD Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-015 MW 14 Report Date: 04/29/08 Collection Date: 03/19/09 17:17 DateReceive d: 03121 tlg Matrix: AqueousI Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date / Byt T T I T T t T t I I I t DATA QUALITY A/C Balance (r S) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone penzene fCarbon tetrachloride / Chloroformy' chbromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr; Dibromofl uoromethane Surr: p-Bromofl uorobenzene Surr: Toluene{8 -2.79 55.7 52.6 3540 0.970 ND ND ND ND ND ND ND ND ND ND 104 104 102 100 % meq/L meq/L mg/L dec. o/o ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L %REC %REC o/oREC %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-130 80-120 80-120 Calculation Calculation Calculation Calculation Calculation SW826OB sw8260B SW826OB sw8260B SW826OB SW826OB SW826OB sw8260B SW826OB sw8260B sw8260B sw8260B sw8260B sw8260B 04114108 15:38 / sw 04114108 15:38 / sw Ul14l08 15:38 / sw 04114108 15:38 / sw 0411410815:38 / sw 0312410823:07 tdkh 0312410823:07 t dkh 03l24lOB 23:07 / dkh 03124108 23:07 t dkh 03124108 23:OZ t dkh 03124108 23:07 t dkh O3l24lOB 23:02 / dkh O3l24l0g 23:07 I dkh O3t2410823:Q7 tdkh 03l24lOB 23iO7 I dkh 03124108 23:07 / dkh 03t24108 23:07 I dkh O3t24lOA 23:07 / dkh 03124108 23:07 / dkh Report Definitions: RL - Analyte reporting limit. QCL - Qualig controt limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit.t T I ffi E@ftZ-ftf,l, ENERGY LABORAToRIES, lNC. . 2gg3 Satt Creek Hwy (82601) * PO Box 3258 * Casper, Wy a2602Toll Free 888.235.0515.3O7.23S.OS|5. FAX gl7.2g4.tOSb - caiper@iirgytaO.com * www.energytab.comI T I Client: Proiect: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp / 1st Quarter Groundwater 2008 /co8o3o583-Oo1 /MWls v Report Date: 04/10/08 Collection Date: 03/11/08 10:50 DateHeceived : 031 1 4108 Matrix: Aqueous Resull Units MCL/Qualifier RL OCL Method Analysis Date / By 03/28108 16:44 / rs 03/28lOB 16:44 / rs E200.8 E200.8 5.0 0.30 1 13 ug/L48.3 ug/L I t T t I I I I I T I t T I t Report Detinitions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at lhe reporting limit. T ffiE@MWEW ENERGY LABORATORIES, lNC. * 2393 Salt Creek Hwy (S260l) * PO Box 3258 * Casper, Wy g2602Toll Free 888.235-0515 - 307.235-0515 " FAx go7.23n.tosb . caiper@energytab.com . vwvi.energytab.comI I I Client: Proiecl: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 1st Quarter Groundwater 2008 /co8o3o583-oo4 /MW17 V Heport Date: 04/10/08 Collection Date: 03/12108 09:00 DateReceived : 0311 4108 Malrix: Aqueous MCUQualifier RL QCL MethodResult Units Analysis Date / By 03/28108 17i17 /ts 03/28lOB 17:17 lts E200.8 8200.8 0.50 0.s0 ND ug/L28.3 ug/L I t t T I I T T t I I I I I I Report Delinitions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum conlaminant level. ND - Not detected at the reporting limit. t I T I ffi,DdiilFfirililEt, ENERGY LABORATORIES, lNC. . 2393 Salt Creek Hwy (82601) " PO Box g25A * Casper, Wy g2602 Toll Free 888.235-0515. 307-235.0515 - FAx 307.294.1639 * casper@energylab.com * wwi.energytab.com LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1st Quarter Groundwater 2008 c0803058s-002 MW18 Revised Date: Report Dale: Collection Date: DateReceived: Matrix: 04t14t08 04t10t08 03/1 1/08 1 3:45 03/14t08 Aqueous Analyses Result Units Qualifier RL MCL/ OCL Method Analysis Date / By ug/L ug/L ug/L I T I t I I T I t t I t ETALS. DISSOLVED Manganese Thallium Uranium 154 1.1 1 42.4 10 0.50 0.30 E200.8 E200.8 E200.8 03128108 17:04 / ts 03128108 17:04 / ts 03128108 17i04 /ts I I t RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. t T t I ffiE@@ / ctient / projecr: Lab lD: Client Sample ID ENERGY LABORATORIES, lNC. . 2393 Salt Creek Hwy (52601) * PO Box 3258 * Casper, Wy g2602Toll Ftee 888.235.0515 " 307.235.0515 - FAX 307.294.1639 * casper@energylab.com * ffi.energytab.com LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp 1st Quarter Groundwater 2008 c08030583-003 MW 19 Report Date: 04/10/08 Colleclion Date: 03/1 1/08 15:55 DateReceived: 0311 4/08 Matrix: Aqueous Analyses Resull Units Qualifier RL MCLi OCL Merhod Analysis Date / By ug/L ug/L ug/L I I I T I T I T I I t t MAJOR IONS Fluoride METALS. DISSOLVED Selenium Thallium Uranium 1.1 10.6 0.52 7.32 mg/L 0.1 5.0 0.50 0.30 A4500-F C 03/17/08 11'27 /bas E200.8 E200.8 E200.8 03128108 17:1 1/ts 03l28lOB l7:11/ts 03128108'17:1 1 / ts I I t Report Delinitions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. Toll Free 888.235.05/5 , g07.2gi.05t| , Fax 302254 ENERG Y LAB ORATO RIE_S! tNC .-2393 Satt Creek H4ghway (A260 t.ro/1Free888.235.05/5 , g07.2gi.05t| , Fax 30Z2?4t6bg .'d;;;;dray (82601) . PO. Box J258 . Caspet Wy A2602. casper@energylab.com . www. ehergylab. con LABORATORY ANALYTICAL REPORT I I Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-002 MW23 Report Date; 04129108 Collection Date: 03/18/08 07:51 DateReceived: 03121 108 Matrix: Aqueous Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date 1ByI I I I MAJOR IONS Carbonate as CO3 picarbonate as HCO3 /c^t iu / Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate ND 275 444 7 0.2 146 ND 0.3 '10.9 384 2410 1 1 1 1 0.1 0.5 0.05 0.1 0.5 I 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 1.0 mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L D P2320 B Fc32OB E200.7 A4soO-Ct B A4500-F C E200.7 A45OO.NH3 G E353.2 E200.7 E200.7 A4s00-so4 E 03124108 22:07 I bas 03l24lOB 22:07 I bas 0410110817:47 I cp 04/03/08 13:05 /jat O3l24log 12:09 / bas 04101108'17:47 lcp 03126t08'10:59 / jat Ogl24l0811:17 I jat O3l28lOB 16:02 / cp 0d,l01l08 17:47 I cp 03/31/08 11:11 iljt I fnysrcAL pRopERnES t/ !",'Or, Totat Dissotved TDS @ 180 C 44500-H B 03/26/08 17:01 / dnpPA54OC 0312610816:39/dd METALS. DISSOLVED Arsenic Beryllium Cadmium / chromir. / cou"ttII CopperI |ron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc I I t I I T 7.49 s.u. 3550 mg/L ND ug/LND ug/LND ug/LND ug/LND ug/LND ug/LND ug/LND ug/L 372 ug/LND ug/LND ugA 29 ugAND ug/LND ug/L 1.27 ug/LND ug/L21.2 ug/L ND ug/L33 ug/L 2.6 pCi/L 0.5 pCi/L - The value under "RL" ls the Minimum Detectable concentration, not the Reporting Llmit. 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 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E900.1 E900.1 04l0/,l0804:17 fts O4lO4lOB O4:17 / ts UlO4l08 04:17 /ts 04104108 04:17 I ts 0410410804:17 ns 04lO4lOB A4:17 I ts 03/28/08 16:02 / cp 0/,I04,'oB 04:17lts 0/,l04l08 04:17 / ts 04104108 (M:17 / ts O4lO4l08 M:l7 / ts 04lo4,l08 04:17 / ts 04104108 04:'17 / ts M/09/08 15:34 / eli-b 04104108 O4:17 / ts 04lO4lOB 04:17 I ts 04l%l08 04:17 / ts 04lO4lOB 04:17 / ts 0/,l0/,l0$ 04:17 /ts 04101108 13:11/crw 04/01/08 13:11 /clw I /RADroNUcLrDEs - DrssoLvEDr ,/ Gross Alpha minus Rn & UI Gross Alpha minus Rn & U precision (*) T Report Definltions: RL - Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrix interference. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. H - Analysis performed past recommended holding time.I T ENERGT LABORATOflI-E-S!^INC '-239! Satt Cre.9f ltlg-tlway (s2601) . P.O. Box S2S8 . Caspeti Waz602rotlFree888.235.0515 . 30z23s.0it5 . Fax s1z,zl4.roii ;AiiiitdeiirsyEi;.rii: *iiiiiisiirb.l*, I t I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-002 MW 23 Report Date: 04/29/08 Collection Date: 03/18/08 07:51 DateReceive d: 03121 108 Matrix: Aqueous Analyses Result Unlts Qualifiers RL MCUQCL Method Analysis Date / ByIDATA QUALITY I I I I I I I I T I I -3.58 % 55.0 meq/L 51.2 meq/L 3560 mg/L1.00 dec. o/o ND ug/LND ug/LND ug/LND ug/L ND ug/LND ug/LND ug/L ND ug/L ND ug/LND ug/L104 %REC105 %REC104 %REC99.0 o/oREC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-1 30 80-120 80-120 Calculation Calculation Calculation Calculation Calculation SW826OB SW8260B SW826OB SW8260B SW826OB SW826OB SW826OB SW826OB SW826OB SW826OB SW826OB SW826OB sw8260B SW826OB 04107108 13:30 / sw 0410710813:30 / sw 0410710813:30 / sw 0410710813:30 / sw 04107108 13:30 / sw 03l24lig 16:37 / dkh 0312410816:37 / dkh 0312410816:37 / dkh 0312410816:37 / dkh 0312410816:37 / dkh 0312410816:37 / dkh 0312410816:37 / dkh 03124108'16:37 / dkh 0312410816:37 / dkh 0312410816:37 / dkh 0312410816:37 / dkh 03'2410816:37 / dkh 0312410816:37 / dkh 0312410816:37 / dkh ,A/C Balance (* 5)I /::ffi: Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC GOMPOUNDS Acetone h"n "n/ C"rbontetrachlorideV chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofl uoromethane Sun: p-Bromofluorobenzene Sur: ToluenedS Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MGL - Maximum contaminant level. ND - Not detected at the reporting limit.I I I ffiIZEEItr@H ENERGY LABORATORIES, lNC. " 2393 Salt Creek Hwy (82601) - PO Box 3250 * Casper, Wy g2602 Toll Free 888-235.051 5 " 307.235.0515 . FAX 307.294.1639 * casper@energylab.com * vwvi.energytab.comt I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1st Quarter Groundwater 2008 /co8o3o583-oo7 /MW24 U Report Date: 04/10/08 Collection Date: 03/1 2/0812:44 DateReceived : 0311 4108 Matrix: Aqueous Analyses Result Units Qualilier BL MCUOCL Method Analysis Date / ByI I I I I I I 0.2 pCi/L 0.3 pCi/L I I T I MAJOR IONS Carbonate as CO3 Bigarbonate as HCO3 dabium / Chloride / Fluoride,/ Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate / PHYSTCAL PROPERTTES JpH Solids, Total Dissolved TDS @ 180 C METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper ND mg/L 520 mg/L 462 mg/L 44 mg/L 0.2 mg/L'167 mg/L5.58 mg/L ND mg/L12.9 mg/L 469 mS/L 2560 mg/L 6.91 s.u.4090 mg/L ND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/L3580 ug/L ND ug/L 1660 ug/L ND ug/L ND ug/LND ug/L ND ug/LND ug/LND ug/L ND ug/L0.84 ug/L ND ug/LND ug/L 42320 B 423208 E200.7 A4500-Ct B A4500-F C E200.7 A45OO.NH3 G E353.2 E200.7 E200.7 A4500-SO4 E 1 1 0.5 1 0.1 0.5 0.05 0.1 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 0.50 't 00 0.30 15 10 1.0 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E900.1 E900.1 A4500-H B 03/18/08 17:43 I dd 42540 C 03/21/08 17:11 / dd 03/18/08 06:59 / bas 03/18/08 06:59 / bas 03121/08 13:15 / cp 03121/08 10:07 /ljt 03117108 11:35 / bas 03121 108 13:1 5 / cp OSl17l08 13:19 / jal 03/19/08 13:53 /jal 03/21108 13:15 / cp 03121108 13:15 /cp 03/18/08 14:29 /lit 03/31/08 23:25 / eli-b 03/31/08 23:25 I elib 03/31/08 23:25 / eh-b 03/28108 22:38 I eli-b 03/31/08 23:25 I eltb 03/31/08 23:25 / eh-b 03121108 13:15 / cp 03/31/08 23:25 / eli-b 03/21108 l3:15 / cp 03/31/08 23:25 I eli-b 03/31/08 23:25 I elt-b 03/31/08 23:25 I el'.b 03/31/08 23:25 I eli-b 03/31/08 23i25 / eti-b 03/31/08 23:25 I eli-b 03/31/08 23:25 / eli-b 03/31/08 23:25 I eli-b 03/31/08 23:25 leli-b 03/28108 22:38 / eli-b 03124/08 22'.16 I cwu 03/24108 22i16 / cvv I ,/ [iii",.." Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIONUCLIDES - D!SSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (1) I I I BL - Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrix interference. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. H - Analysis performed past recommended holding time. I ffirz@Mre@ ENERGY LABORATOBIES, lNC. * 2393 Satt Creek Hwy (52601) " PO Box g25A . Casper, Wy g2602Toll Free 888.235.0515 " 307.235.0515 . FAx 3o7.2g4.telb . caiper@energylab.com * wwi.energytab.comI I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1st Quarter Groundwater 2008 c08030583-007 MW 24 Report Date: 04/10/08 Collection Date: 03/1 2/0812:44 DateReceived : O3l14lQB Malrix: Aqueous Analyses Result Units Qualifier RL MCUOCL Method Analysis Oate / By T T I T I I I I I I I I PATA OUALITY / NC Balance (!5\ ,/ Anion.U cations -4.08 o/o 63.1 meq/L 58.2 meq/L 3990 mg/L1.03 dec. "h ND ug/LND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/L ND ug/L ND ug/LND ug/L 105 %REC 107 %REC104 %REC 101 %REC Calculation Calculation Calculation Calculation Calculation SW826OB sw8260B SW826OB SW826OB SW826OB SW826OB sw8260B SW826OB SW8260B sw8260B SW8260B SW826OB SW8260B SW826OB 04102/08 15:33 / sw 04102108 15:33 / sw 04102/08 15:33 / sw 04102108 15:33 / sw 04102108 15;33 / sw 03117108 17:42 ldkh 03/17108 17:42 / dkh 03117108 17:42 I dkh 03/17/08 17:42 I dkh 03117108 17:42 / dkh 03/17108 17:42 I dkh 03117/08 17:42 I dkh 03117108 17:42 I dkh 03117108 17:42 I dkh 03117108 17:42 / dkh 03117108 17:42 / dkh 03117108 17:42 I dkh 03/17108 17:42 / dkh 03117108 17:42 I dkh Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chlorolorm Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene-d4 Surr: Dibromof luoromethane Sur: p-Bromolluorobenzene Surr: Toluene-d8 20 1.0 1.0 1.0 't.0 20 1.0 1.0 1.0 1.0 80-1 20 70-1 30 B0-120 80-1 20 I t I Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. ENERCY LABORATORIES, lNC. ' 2393 Saft Creek Hig-hway (52601) . P.O. Box S2S8 . Caspet; WyA2602TottFree 888.2si.05ts . s1z.2ss.^sti , Fax szz.fia.tbbi ;-dspeiairi,ircylal;.;i: *,r;;;;;;biirb.** I T I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-006 MW25 Report Date: 04129108 Collection Date: 03/18/08 16:15 DateReceived: 03121 IOB Matrix: Aqueous Analyses Result Units Qualifiers RL MCU QCL Method Analysis Date / By mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L t I I T nrtAon rons darbonateas CO3 ficarbonate as HCO3 / caLiuV chtoriae Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate ND 415 353 32 0.3 120 0.49 ND 9.8 306 1750 I 1 0.5 1 0.1 0.5 0.0s 0.1 0.5 2 30 0.01 't0 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 1.0 423208 A232OB E200.7 44500-Ct B A4500-F C E200.7 A45OO-NH3 G E3s3.2 E200.7 E200.7 A4500€O4 E 03124108 22:21 I bas 03l24lOO 22:21 lbas 04101108 17:54 I cp 0d.10310813:'16 / jat 03l24lOO 12:18 / bas 04101108'17:541 cp 0312610A 11 :03 / jat 03124108 11:22 ljat 0312810816:121 cp 04101108 17:54 I cp 03/31/08 11:23 lljl I / ;l*rcAL PR.PERTTE. sotids, rotat Dissotved rDS @ 180 c l;Xto il" X T METALS. DI'S.LVEDArsenic ND ug/Lt ::],liffi ii ffiiif Cnromrum ND ug/LCobalt ND ug/LI ;ff,"' x3 ;;iiLead ND ug/L r Manganese 1610 ug/LI ilff;[,,, T? HiiNickel ND ug/Lr Selenium ND ug/Lf sitverI il;;,, J," ;:iiTin ND ug/LI Y:ilffi, 'il' ffiiZinc ND ug/L I RADT'NU.LTDES - DrssoLVED - / Gross Alnha minus Rn & U i.9 pCirL _ */ Gross Alpha minus Rn & U precision (*) 0.4 pCUL I " - The value under "Ru ls the Minlmum Detectable Concentration, not the Reporting Llmit. A4500-H B 03/2610S 17:06/dnp42540C 0312610816:40/dd 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 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900.1 04104108 O4:38 / ts 04l0/,l08 04:38 / ts O4lO4l08 04:38 / ts 04104108 04:38 / ts 04104108 O4:38 / ts 04104108 M:38 / ts 0312810816:121q 04O4l08 M:38 /ts 0/.l04lOO 04:38 /ts 04104108 (X:38 / ts 0/,l04l08 04:38 /ts 04/04tb8-04:38 /ts o/,l04l08 04:38 /ts 04/09/08 15:421 eli-b O4lO4lOO 04:38 / ts 03128108 16:12 I cp 04104108 04:38 / ts 04104108 O4:38 / ts 04104108 04:38 / ts 04101108 13:11/cru 04,101108 13:11lcnr Report Definltions: RL - Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrix interference. MCL - Maximum contaminant levet. ND - Not detec'ted at the reporting limit. H - Analysis performed past recommended holding time.I T ENERCY UIBORATOHIES, lNC. . 2393 Salt Creek Hbhway (52601) , p.O. Box 32SB . Casper WA2602 Toll Free 888.235.0515 ' 307.235.0515 , Fax 302234.1639 ,'casper@energytab.un , www.ehergytaO.con LABORATORY ANALYTIGAL REPORT I I Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-006 MW25 Report Date: 04129108 Collection Date: 03/18/08 16:15 DateReceived: 03121 108 Matrix Aqueous Analyses Result Unlts Qualifiers RL MCU QCL Method Analysis Date / Byt I t t T T T I T I T T T Dy'TA OUALITY r{/C Balance (t 5) ,/Anion./ c"tion. Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone A"n "rn/ C^rAontetrachloride / chtoroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzened4 Surr: Dibromofl uoromethane Surr: p-Bromofl uorobenzene Surr: Toluene-d8 -3.34 o/o 44.1 meq/L41.2 meq/L 2780 mg/L 0.970 dec. o/o ND ug/L ND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/LND ug/LND ug/L ND ug/L 102 %REC100 %REC 102 %REC98.0 o/oREC 20 1.0 1.0 1.0 't.0 20 1.0 1.0 1.0 1.0 80-120 70-1 30 80-120 80-120 Calculation Calculation Calculation Calculation Calculation SW826OB SW826OB SW8260B SW826OB SW8260B SW826OB SW826OB SW8260B SW826OB SW8260B SW826OB SW826OB SW826OB SW826OB Ml07l08'13:34 / sw 04lO7lOB 13:34 / sw Ul07l08 13:34 / sw 0/.107l08 13:34 / sw O4l07lOA 13:34 / sw 0312410817:55 / dkh 0312410817:55 / dkh 0312410817:55 / dkh 0312410817:55 / dkh 0312410817:55 / dkh 0312410817:55 / dkh 0312410817:55 / dkh 0312410817:55 / dkh 0312410817:55 / dkh 0312410817:55 / dkh 0312410817:55 / dkh 0312410817:55 / dkh 03124108'17:55 / dkh 03124108 17:55 / dkh I t Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MCL- Maxirnum contaminant level. ND - Not detected at the reporting limit. I T t I ffi ,E@EE@@ ENERGY LABORATORIES, lNC. " 2393 Satt Cree| Hvvy (52601) * PO Box 32SB * Casper, Wy 02602Toll Free 888.235-0515 - 307.235.0515. FAx 307.234.1639 * casper@energylab.com * wwvi.energytab.com LABORATORY ANALYTICAL HEPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 'I st Quarter Groundwater 2008 c08030s83-006 MW 26 Report Date: 04/10/08 Collection Dale: 03112/08 12:09 DateHeceived: 03h4lA8 Malrix: Aqueous Analyses Result Units Qualilier MCUOCL Method Analysis Date / By pCi/L pCi/L I I I I I I T I T I t I / calcium/ cntorioeU Fluoride MAJOR IONS Carbonate as CO3 Bicarbonate as HC03 Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Polassium Sodium Sullate PHYSICAL PROPERTIES pH Solids, Total Dissolved TDS @ 1BO C METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper Iron 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 (r) ND mg/L390 mg/L 492 mg/L 69 mg/L0.3 mg/L 154 mg/L 0. 16 mg/L 2.7 mg/L 11.1 mS/L194 mg/L 1850 mS/L 6.99 s.u. 31 l0 mg/L ND ug/LND ug/LND ug/L ND ug/LND ug/L ND ug/L668 ug/LND ug/L 1390 ug/LND ug/L ND ug/L ND ug/LND ug/L ND ug/LND ug/LND ug/L 46.3 ug/L ND ug/LND ug/L 2.3 0.6 42320 B 42320 B E200.7 A4500-Ct B A4500-F C E200.7 A45OO.NH3 G E353.2 E200.7 E200.7 A4500-SO4 E 1 I 0.5 1 0.1 0.5 0.05 0.1 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 1.0 A4500-H B 03/18/08 17:42 I dd42540C 03/21/08't7:10/dd 03/18/08 06:51 / bas 03/1 8/08 06:51 / bas 03121108 13:08 / cp 03121108 10:03 / ljl 03117108'l l:32 / bas 03121108 13:08 / cp 03117108'13:17 ljat 03/1 9/08 1 3:50 / jal 03121108 13:08 / cp 03/21 108 13:08 / cp 03/1 8/08 14:12 / ljl 03/31/08 22:51 I eli-b 03/31/08 22:51 / elib 03/31/08 22:51 I eli-b 03128/08 22:26 / elib 03/31/08 22:51 I eli-b 03/31/08 22:51 / eli-b 03121/08 13:08 / cp 03/31/08 22:51 I elt-b 03/21/08 13:08 / cp 03/31/08 22:51 I eli-b 03/31/08 22:51 I eli-b 03/31/08 2:51 leli-b 03/31/08 22:51 /eli-b 03/31/08 22:51 I eli-b 03/31/08 22:51 / eli-b 03/31/08 2.:51 /eli-b 03/31/08 22:51 / elvb 03/31/08 22:51 / eli-b 03128108 22:26 / eli-b 03124108 17150 I crw 03/24108 17'.50 I cwv E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E900.1 E900.1 T I I Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrix interference. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. H - Analysis performed past recommended holding time. T t I I ENERGY LABORATORIES, lNC. * 2393 Salt Creek Hwy (82601) * PO Box 9258 . Casper, Wy 02602Toll Free 888.235.0515. 307.235.0515 - FAX g|Z.2g4.l6g9 * casper@energylab.com * wwi.energylab.com LABORATORY ANALYTTCAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1st Quarter Groundwater 2008 c08030583-006 MW 26 Report Dale: 04/1 0/08 Collection Date: 03/12108 12:09 DateBeceived: 0311 4108 Matrix: Aqueous Analyses Besult Units Qualilier MCU OCL Method Analysis Date / ByI t I t I I I I I I I t DATA OUALITY , fuC Balance (t 5)/ Anions l/ cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone penzene f Carbon tetrachloride / Chloroform / Chloromethane / ttletng erhyr kerone V Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene-d4 Sur: Dibromo{luoromethane Surr: p-Bromof luorobenzene Sun: Toluene-d8 -0.947 o/o 47.O meq/L 46.1 meq/L 2980 mg/L1.04 dec. o/" ND ug/LND ug/L ND ug/L 1300 ug/L ND ug/LND ug/L66 ug/L ND ug/L ND ug/L ND ug/L 104 %REC104 %REC 104 %REC 99.0 %REC 20 1.0 t.0 50 1.0 20 1.0 1.0 1.0 1.0 80-1 20 70-1 30 B0-120 80-1 20 Calculation Calculation Calculation Calculation Calculation SW826OB SW8260B SW8260B SW8260B SW8260B SW8260B SW8260B SW8260B SW826OB SW826OB SW826OB SW826OB SW826OB SW826OB 04102108 l5:33 / sw 04102108 15:33 / sw 04102108 15:33 / sw 04102/08 15:33 / sw 04l02lOB 15:33 / sw 03117108 19:40 / dkh 03117108 19:40 / dkh 03117108'19:40 / dkh 03/17108 20:19 / dkh 03117108 19:40 / dkh 03/17108 19:40 / dkh 03117108 19:40 / dkh 03/17108 19:40 / dkh 03117lOB 19:40 / dkh 031'17/08 19:40 / dkh 03117108 19:40 / dkh 031"17/08 19:40 / dkh 03117108 19:40 / dkh 031171O8 19:40 / dkh I I I Beport Definitions: RL - Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrix interference. MCL - Maximum contaminant level. ND - Not detected at the reporting limil. ENERQY LABoRAToR_lEs, lNC. . 2393 satt crggl rylgQway (s2601) , po. Box s2i8 , casper, wy a2602Toll Free 888.235.0515 ' 307.235.05/5 , Fax 307.234.1639 . 'casperAienergytab.cvi: **w.i6iibiiab.ron LABORATORY ANALYTICAL REPORT I I Client: Project: Lab lD: CIient Sample lD Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-001 MW 27 Report Date: 04l29lOB Collection Date: O3l17lO8 14:40 DateReceived: 03121 108 Matrix: Aqueous Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date / ByI I t I I T T I I I t I T MAJOR IONS Eerbonate as CO3 ,,6icarbonate as HCO3 yl Calcium Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate 7 PHYSICAL PROPERTIES lpaV sotios, Totat 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 minus Rn & U Gross Alpha minus Rn & U Precision (t) ND 456 156 37 0.8 66.7 ND 5.4 4.6 71 428 8.10 s.u. 1050 mg/L ND ug/L ND ug/LND ug/LND ug/LND ug/LND ug/L264 ug/LND ug/L ND ug/LND ug/LND ug/LND ug/L 8.5 ug/LND ug/LND ug/LND ug/L30.2 ug/L ND ug/LND ug/L 2.O pCi/L 0.4 pCi/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L 1 1 0.5 1 0.1 0.5 0.05 0.'l 0.5 2 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 1.0 Fc32OB 42320 B E200.7 A4500-Ct B A4500-F C E200.7 A45OO-NH3 G E353.2 E200.7 E200.7 A4500-SO4 E 03l24lOB 22:00 I bas 03124108 22:00 lbas 0312810815:49 / cp 04/03/08 13:03/jal 03l24lOB 12:07 lbas 0312810815:49 / cp 03/26/08 10:55 /jal 031241081'l:14 lial 0312810815:49 / cp 0312810815:491 cp 03/31/08 11:10 / ljl A4500-H B 03/26/08 16:59 / dnp 42540 C 03/26/08 16:39 / dd 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 04lMlOB 04:11lts 04lO4lOB O4:11/ts 04l%l08 04:11/ts 0412310817:59 / ts 0412310817:59 / ts 04104108 04:11/ts 03/28/08 15:49 / cp 04104108 04:11lts 0412310817;59 / ts 04104108 04:11/ts 0412310817:59 / ts o4,l23l0817:59 /ts 04104108 O4:11 / ts Ul23l0817:59 / ts A4l%ng 04:11/ts Ul23lO817:59 / ts 0d.l04l08 O4:11 / ts 0/.12310817:59 / ts 0412310817:59 / ts 04/01/08 13:11 / crw 04/01/08 13:11 / cnrv - The value under "RL'ls lhe Minimum Detectable concentEtion, not the Reporting Llmit. I T Repoil Definitlons: RL -Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrix interference. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. H - Analysis performed past recommended holding time. t ENERGY LABORATORIES, lNC. ' 2393 Salt Creek Hrghway (52601) . P.O. Box 3258 . Caspq W A2602 Toll Free 888.235.05/5 ' 307.235.05/5 ' Fax 307.234.1639 .'asper@energylab.mm , wv,nu.ifririlytaO.con I t I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-001 MW 27 Report Datr: 04129108 Collection Date: 03/1 7/08 14:40 DateReceive d: 03121 108 Matrix: Aqueous Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date / ByI I /t:rx DATAQUALITY A/C Balance (t 5)Calculation Calculation Calculation Calculation Calculation SW826OB SW8260B SW826OB SW8260B SW826OB SW826OB SW826OB SW826OB SW826OB SW826OB SW826OB sw8260B SW826OB SW826OB -3.97 o/o 17.9 meq/L 16.5 meq/L 1030 mg/L1.02 dec. o/o ND ug/L ND ug/L ND ug/LND ug/LND ug/L ND ug/LND ug/LND ug/L ND ug/L ND ug/L102 %REC100 %REC103 %REC 100 %REC 04107108 13:30 / sw 04107108 13:30 / sw 04107108 13:30 / sw 04107108 13:30 / sw Ml07l08'13:30 / sw 0312410815:58 / dkh 0312410815:58 / dkh 0312410815:58 / dkh 0312410815:58 / dkh 0312410815:58 / dkh 0312410815:58 / dkh 0312410815:58 / dkh 03124108'15:58 / dkh 0312410815:58 / dkh 03124108'15:58 / dkh 0312410815:58 / dkh 03D410815:58 / dkh 03124t0815:58 / dkh 03124108'15:58 / dkh I t I T I I T t t I T Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOI.ATI LE ORGANIC COM POUN DS Acetone penzene /Carbon tetrachloride / chtorofor-I/ Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofl uoromethane Surr: p-Bromofl uorobenzene Sun: ToluenedS 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 8o-120 70-1 30 80-120 80-120 Report Definltions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level, ND - Not detected at the reporting limit.t I ! I I I ffiEEEIEreIilH ENERGY LABORATORIES, lNC. * 2393 Salt Creek Hwy (S260l) . PO Box 3258 * Casper, Wy g2602 Toll Free 888.235-0515. 307'235.0515 . FAX 307.234.1639 . casper@energylab.com * wwi.energylab.com ATORY ANAL / / Client: Project: Lab lD: Clienl Sample lD LABOR Denison Mines (USA) Corp 1st Quarter Groundwater 2008 c08030583-008 MW 28 YTICAL REPORT Report Date: 04/10/08 Collection Date: 03/1 2/08 15:25 DateHeceived: 03114108 Matrix: Aqueous Analyses Result Units Qualilier RL MCL/OCL Method Analysis Date i By / Fluoride yl viagnesium I I I I I I I I I t I t MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium Chloride 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 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 (l) ND mg/L159 mg/L490 mS/L 99 mg/L 0.6 mg/L 160 mg/L ND mg/L 0.1 mg/L 11.4 mg/L292 mg/L 2310 mg/L 6.88 s.u. 3640 mg/L 15.4 ug/L ND ug/L3.40 ug/L ND ug/L29 ug/L ND ug/L 46 ug/LND ug/L 1540 ug/LND ug/LND ug/L 23 ug/LND ug/L ND ug/L 0.84 ug/LND ug/L 3.17 ug/LND ug/L 34 ug/L 1.2 pCi/L 0.5 Pci/L 1 1 0.5 1 0.1 0.5 0.05 0.t 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 't5 10 1.0 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E900.1 8900.1 42320 B 42320 B E200.7 A4500-Cr B A4500-F C E200.7 A45OO-NH3 G E353.2 E200.7 E200.7 A4500-SO4 E 03/18/08 13:42lbas 03/18/08 13:42 / bas 03121108 13:18 / cp 03121108 10:11/lll 03117108 11:38 / bas 03121108 13:18 / cp O3l't7108 13:21 liat 03/19/08 13:55 /jal 03/21/08 13:18 / cp 03121108 13:.18 / cp 03/18/08 14:34 llil I A4500-H B 03/18/08 '17:44 / dd 42540 C 03121/08 17:11 I dd 03/31/08 23:32 I eli-b 03/31/08 23:32 I eli-b 03/31/08 23:32 I eli-b 03128108 22:49 I elt-b 03/31/08 23:32 / eli-b 03/31/08 23:32 / eli-b 03121108 13:18 / cp 03/31/08 23:32 I eli-b 03/21lOB 13:18 / cp 03/31/08 23:32 / eli-b 03/31/08 23:32 / eli-b 03/31/08 23:32 I eli-b 03/31/08 23:32 I eli-b 03/31/08 23:32 / eli-b 03/31/08 23:32 / eli-b 03/31/08 23:32 /eh-b 03/31/08 23:32 / eli-b 03/31/08 23:32 / eli-b 03/28/08 22i49 I eli-b 03124108 22'.16 / crw 03124108 22:161 crw I I I Report Derinitions: RL - Analyte reporting limit. QCL - Ouality control limit. D - RL increased due to sample malrix interference. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. H - Analysis performed past recommended holding time. T I I T ffiE@EEEW ENERGY LABORATORIES, lNC. - 2393 Salt Creek Hwy (S26Ot) * PO Box g2SO . Casper, Wy A2602Toll Free 888.235.0515 " 307.235.0515 - FAX 307.234.1699 * casper@energytab.com * wwi.energylab.com LABORATORY ANALYTTCAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1st Quarter Groundwater 2008 c08030583-008 MW 28 Report Date: 04/10/08 Collection Date: 03/12108 15:25 DateReceived : 0311 4108 Matrix: Aqueous Analyses Result Units Qualifier RL MCL/OCL Method Analysis Date / By T I I t I I I I I t T T DATA QUALITY A/C Balance (t 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) /voLATlLE ORGANTC COMPOUNDS/ Acetone / B"n.n"V Carbon tetrachloride Chloroiorm Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene-d4 Surr: Dibromof luoromethane Surr: p-Bromolluorobenzene Surr: Toluene-d8 -2.59 0/" 53.5 meq/L50.8 meq/L 3450 mg/L 1.06 dec..k ND ug/LND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/L ND ug/L ND ug/LND ug/L 106 %REC 112 %REC104 %REC 102 %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-1 20 70-1 30 80-120 80-1 20 Calculation Calculation Calculation Calculation Calculation SW8260B SW826OB SW8260B SW826OB SW8260B SW826OB SW826OB SW826OB SW826OB SW8260B SW8260B SW826OB sw8260B sw8260B 04102108 15:33 / sw 04102108 15:33 / sw 04102108 15:33 / sw 04102108 15:33 / sw 04102108 15:33 / sw 03117108 18:21 /dkh 03/17108 18:21 / dkh 03117108 18:21 / dkh 03117108 18:21 / dkh 0311710818:21 / dkh 03117108 18:21ldkh 03117108 18:21 / dkh 0311710818:21 / dkh 03117108 18:21 / dkh 03117108 18:21 / dkh 03/17108 18:21ldkh 03117108'18:21 / dkh 03117108'18:21 / dkh 03117108 18:21 / dkh I t I Heport Definitions: RL - Analyte reporting limit. QCL - Quality conkol limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. ENERQY LABoRAToqtF_s!-NC ._239! sa/t Qr99f H,iq-tway (a2601) , p.o. Box 3258 . caspeti w az60zToll Free 888.2ss.051s . a1z2ss.1sts . Fax s02234.fi3s ,'dipeideiirgr,i;.r;;: *;;;;;;s;Lb.:*, I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-010 MW 29 Report Date: O4129108 Collection Date: 03/19/08 08:00 DateReceived: 03121 108 Matrix: Aqueous I Analyses Result Units Qualifiers RL MCU QCL Method Analysis Date / Byt I I I I T T T t t T t I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 ,Calcium g/ cntoriae Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate I /PHYSICAL PROPERTTES t/ pH Solids, Total Dissolved TDS @ 180 C METALS. DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead Manganese Mercury Molybdenum Nickel Selenium Situer Thallium Tin Uranium Vanadium Zinc RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (*) ND 345 461 39 0.8 206 0.80 ND 17.2 466 2840 7.46 s.u. 4430 mg/L ND ug/LND ug/LND ug/LND ug/L ND ug/LND ug/L 1380 ug/L ND ug/L 4830 ug/LND ug/L ND ug/LND ug/LND ug/LND ug/LND ug/L ND ug/L 11.1 ug/LND ug/L21 ug/L 2.1 pCUL 0.5 pCi/L D D mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L I 1 0.5 1 0.1 0.5 0.05 0.1 0.5 4 30 0.0'l 10 5.0 0.50 0.50 25 10 10 30 't.o 10 0.50 10 20 5.0 10 0.50 100 0.30 15 10 1.0 42320 B A232O B E200.7 44500-Ct B 44500-F C E200.7 A45OO.NH3 G E353.2 E200.7 E200.7 A4500-SO4 E O3l24lOB 23:07 lbas 03124108 23:07 lbas 04101108'18:07 / cp 04/03/08 14:38 I jal O3l24lOA 12:31 I bas O4lO1lO818:07 / cp 0312610811:17 lial O3l24lO8'l'l:39 / jal 03128108 16;25 1 cp 0410110818:07 / cp 03/31/08 12:29lljl A4500-H B 03/26/08 1t'.17 tdnpA254OC 0312610818:58/dd 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 E200.7 E200.8 E200.8 E200.8 E900.'l E900.1 04124108 12:28 I sml Ul24lOB 12:28 I sml O4n4lOA 12'.28 I smt Ul24lO8 12:28 I sml O4l24l$g 12:28 lsml O4l24l0g 12:28 I sml 03/28108 16:251 cp 04124n812:28 / sml 03t28/08 16:25 I cp 0412410812:28 I sml 04124108 12;28 Isml 0412410812281 smt 04,124n812:28/sml Ul24l08 12:28 I sml O4l24l$e12:28 lsml 03/28/08 16:25 lcp 04124108 12:28 lsml 04124108 12:28 I sml 04124108 12:28 I sml 04/0'l/08 13:11/cnrv 0410'110813:11 / crw- The value under'RL" ls $e Minimum Detectable concentration, not lhe Reporling Llmit. Report Definltions: RL - Analyte reporting limit. QCL - Quality cpntrol limit. D - RL increased due to sample matrix interference. MCL - Maximum conlaminant level. ND - Not detec'ted at the reporting limit.t I ENERGYLABORA|OHE_S, INC '2393 SaftCreekHighway(82601). P.O. Box3258 . Caspet; WA2602 Toll Free 888.235.0515 ' 307.235.05/5 , Fax 307.234.1035 .'cisper@energytaO.ui: wwweieiSiaO.:con LABORATORY ANALYTICAL REPORT T I Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-010 MW 29 Report Date: 04129108 Collection Date: 03/19/08 08:00 DateReceived: 03121 108 Matrix: Aqueous Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date / ByI t I I I I T I T I I I T DATA QUALITY ,A/C Balance (t 5) yl entons Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Afetone Benzene hariontetrachloride /chtoroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr:'1,2-Dichlorobenzene-d4 Surr: Dibromofl uoromethane Surr: p-Bromofl uorobenzene Sun: Toluene-d8 -3.78 o/o 65.9 meq/L 61.1 meq/L 4220 mg/L1.05 dec. o/o ND ug/L ND ug/LND ug/LND ug/L ND ug/LND ug/LND ug/L ND ug/L ND ug/LND ug/L107 %REC116 %REC 106 %REC100 %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 't.0 80-120 70-130 80-'t20 80-120 Calculation Calculation Calculation Calculation Calculation SW8260B SW826OB SW826OB SW8260B SW826OB SW826OB SW8260B SW8260B SW826OB SW826OB SW8260B SW826OB SW826OB SW826OB 04107108 13:36 / sw 04107108 13:36 / sw 04107108 13:36 / sw 04107108 13:36 / sw 04107108 13:36 / sw 03D41082'l:10 t dkh 03124108 21:10 / dkh 03124108 21:10 I dkh 03124108 21:10 / dkh 03124108 21 :1 0 / dkh 03124108 21:10 / dkh 03124108 21:'10 I dkh 03124108 21:'10 I dkh 03n4l08 21:10 / dkh 03124108 21 :1 0 / dkh 03124108 21:10 / dkh 03124108 21 :'l 0 / dkh 0312410821:10 t dkh 03n4n821:10 I dkh Report Definitlons: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit.T I ENERCY LABOBATORIES, lNC. . 2393 Saft Creek Hr?hway (82601) . PO. Box 3258 . Casoer. WA2602 TollFree 888.235.0515 . 302235.0515 , Fax 307.234.t639 .'cisper@energytab.mn , www.eiterbytab.qn LABORATORY ANALYTICAL REPORT I I Glient: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-012 MW 30 Report Date: Collection Date: DateReceived: Matrix: 04t29t08 03/19/08 10:10 o3l21toB Agueous Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date / By T I I I I I I T T I I t MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium /cnoriaey' Ftuoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate 'HYSTCAL PROPERTTES hHt/ Solid., 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 / naoronucLrDEs - DtssoLVED/ Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (r) I - The value under'RL'ls the Minimum Detectable Concentration, not the Reporting Limit. ND mg/L197 mg/L 270 mg/L 118 mg/L0.4 mg/L 68.9 mg/L ND mg/L 14.8 mg/L7.8 mg/L108 mg/L 853 mg/L 7.90 s.u. 1610 mg/L ND ug/L ND ug/L ND ug/LND ug/LND ug/L ND ug/L 141 ug/LND ug/L45 ug/L ND ug/LND ug/LND ug/L 30.5 ug/L ND ug/LND ug/LND ug/L6.79 ug/LND ug/L ND ug/L 1.0 pCi/L 0.3 pCru F4320 B P4320 B E200.7 A4500-Ct B 44500-F C E200.7 A45OO.NH3 G E353.2 E200.7 E200.7 44500-504 E E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.7 E900.1 E900.'t 0312410823:2'l lbas 0312410823:21 lbas 03/28/08 17:20 I cp 04/03/08 14:43 I jal 03124108't2:51 / bas 0312810817'.201 cp 03/26/08 11:21 I ial 03124108 12:34 I jal 03/28108 17:20 I cp 0312810817:201 cp 03/31/08 12;44 ilil 0d,12310818:12lts 04123108 18:12 / ts 04123108 18:12 / ts 0412310818:12 / ts O4D3|O818:12 / ts 0412310818:12 / ts 03/28/08 17:20 I cp 04n3n818:12 / ts 0312810817:20 I cp M12310818:12 / ts 04,12310818:12 / ts o4n3$8 !8;12 / ts 04n3n818:121!s O4D3|O818:12 / ts 0412310818:12 / ts O3l28lOB 17:20 I cp 0412310818;12 / ts 04n3n818:12 /ts 0312810817:201 cp 04/01/08 13:11 /cnrtl 04/01/08 13:11 / cnrv D D 1 1 0.5 1 0.1 0.5 0.05 0.2 0.5 2 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 1.0 44500-H B 0326/08 17;231 dnp 42540 C 03/26/08 18:59 / dd Report Definltlons: RL - Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrix interference. MCL - Maximum contaminant level. ND - Not detected at the reporting limit.T t ENERCY LABORATORIES, tNC. . 2593 Salt Creek Hiohwav /8260t ) . 'ol/Free888.235.0515 . 307.235.051i . Fax g0z?g4.t639 .'casoerderray (82601) . PO. Box 3258 . Casper; WYAZ602. casper@ energylab. com . www energylab. comToll Free 888.235.0515 . 307.235.051i . Fax g0ZZg4. LABORATORY ANALYTICAL REPORT t I Glient: Project: Lab lD: CIient Sample ID Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-012 MW 30 Report Date: 04/29/08 Gollection Date: 03/19/08 10:10 DateReceived: 03/21108 Matrix: Aqueous Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date / By -2.69 25.4 24.1 1600 1.01 I I I DATA QUALITY //C Balance (r 5) ,/ enion, Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS % meq/L meq/L mg/L dec. o/o Calculation Calculation Calculation Calculation Calculation SW8260B SW826OB SW826OB SW826OB sw8260B SW826OB SW826OB SW826OB sw8260B SW826OB SW826OB SW826OB SW82608 SW826OB 04107108 13:37 / sw 04107108 13:37 / sw 04107108 13:37 / sw O4lO7l08 13:37 / sw 04107108 13:37 / sw 03124108 22:28 I dkh 03l24tOB 22:28 I dkh 03124108 22:28 I dkh 03l24lOB 22:28 I dkh 0312410822:281 dkh 03124108 22:28 I dkh O3l24lOB 22:28 I dkh 03124108 22:28 I dkh O3l24lOB 22:28 I dkh 0312410822:28 I dkh 0312410822:28 ldkh O3l24lO8 22:28 I dkh O3l24lO8 22:28 I dkh 03124108 22:28 I dkh AcetoneI r Benzene I / carbon tetrachtoride\/ chloroformt il*##jv;:ftr NaphthaleneI li'1i1i,,",", Sun: 1,2-Dichlorobenzene-d4I :;r#J:#r"j::l: t I t T I T ND ug/LND ug/LND ug/L ND ug/LND ug/LND ug/LND ug/L ND ug/LND ug/LND ug/L 106 %REC115 o/oREC 104 %REC100 %REC 20 1.0 1.0 't.0 1.0 20 't.0 1.0 't.0 1.0 80-120 70-130 80-120 80-120 T t Report Definltions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. I ENERGY IABORATOHE-9, INC ' 2393 Satt Creek Hig-hway (s2601) . PO. Box S2S8 . Caspet W a2602Tott Free 888.23s.051s . a07.fus.0st5 . Fax szziseroSi :Giii6ri,iriyhi.rr;: *,r;;;;;biirb.b, I I I LABOMTORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-01 1 MW 31 Report Date: 04/29/08 Gollection Date: 03/19/08 12:20 DateReceived: 03121 108 Matrix: Aqueous Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date / Byt I I T I I I I I I T MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 /c^t iul/ cnoriae Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate / PHYSICAL PROPERTIESIlpH 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 ND 212 161 124 0.9 78.2 ND 25.0 6.2 91 521 7.98 s.u. 1220 mg/L ND ug/LND ug/LND ug/L ND ug/LND ug/LND ug/LND ug/LND ug/LND ug/LND ug/LND ug/LND ugtr54.4 ug/LND ug/LND ug/L ND ug/L 7.02 ug/LND ug/LND ug/L 1.7 pCi/L0.4 pCi.rl D D mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L D 1 1 0.5 1 0.1 0.5 0.05 0.3 0.5 2 10 0.01 10 5.0 0.50 0.50 25 10 10 30 't.0 10 0.50 10 20 5.0 't0 0.50 100 0.30 15 10 't.0 423208 A232OB E200.7 A4500-ctB 44500-F C E200.7 A45OO-NH3 G E353.2 E200.7 E200.7 A4500-SO4 E 03124108 23;14 I bas 0312410823:'14 lbas 03/28/08 17:14 I cp 04/03/08 14:4'l ljat 03124108 12:43 lbas 0312810817:14 I cp 0312610811:19 liat 0312410811:42 I iat 0312810817:'14l cp 03128108 17:14 I cp 03/31/08 12:31 lljl A4500-H B 03/26108 1t:21 I dnp 42540 C 03/26/08 18:59 / dd I RADToNUcLTDEs - DrssoLVEDr 7 Gross Alpha minus Rn & U p/ Cross Alpha minus Rn & U precision (r) 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 E200.7 E200.8 E200.8 E200.7 E900.1 E900.1 0412310818:05 / ts 0412310818:05 / ts 04123108 18:05 / ts 0412310818:05 / ts 0412310818:05 / ts Un3log18:05 / ts 08/2A0817:141 q 0412310818:05 / ts 0312810817:14 I cp 0412310818:05 / ts 04123/08 18:05/ts 04n3/0818:05 / ts 0412310818:05 / ts 0/,12310818:05 /ts 0412310818:05 / ts 03l28lOB 17:14 I cp 04D310818:05 / ts 0412310818:05 / ts 03128108 17:14 I cp 0410110813:11 / crw 04/01/08 13:11/cnrvI- The value under "RL' is the Minimum Detectable concentration, not the Reporting Limit. Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrix interference. MCL - Maximum contaminant level. ND - Not detected at the reporting limit.t T ENERGY LABORATORIES! -lNC ' 2393 Salt Creek Higllway (82601) . PO. Box J2i8 . Casper; WyA2602Tott Free 888.235.05/5 ' 302235.0515 ' Fax 307.2s4.tobe :-caipeideiersylai;.ni: ***.ifiiiiiirb.*, LABORATORY ANALYTTCAL REPORTt T Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-01 1 MW 31 Report Date: 04129108 Colfection Date: 03/19/08 12:2O DateReceive d: 03121 108 Matrix: Aqueous I Analyses Result Units Qualifiers RL MCU QCL Method Analysis Date / By I T t I t I I I I I I I I DATA QUALITY A/C Balance (* 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Su rr: 1,2-Dichlorobenzene-d4 Surr: Dibromofl uoromethane Surr: p-Bromofl uorobenzene Surr: ToluenedS -2.79 o/o 19.7 meq/L18.6 meq/L 1210 mg/L1.01 dec. o/o ND ug/LND ug/L ND ug/LND ug/LND ug/LND ug/L ND ug/LND ug/LND ug/L ND ug/L 103 %REC99.0 %REC105 %REC98.0 %REC 20 1.0 1.0 't.0 1.0 20 1.0 1.0 1.0 't.0 80-120 70-1 30 80-120 80-120 Calculation Calculalion Calculation Calculation Calculation SW826OB SW826OB SW826OB SW826OB SW826OB SW826OB SW826OB sw8260B SW826OB SW826OB SW8260B SW826OB SW826OB SW826OB 04107108'13:37 / sw 0410710813:37 / sw 0/.l07l08 13:37 / sw 04107108 13:37 / sw Ul07lO8 13:37 / sw 0312510813:04 / dkh 0312510813:04 / dkh 0312510813:04 / dkh 0312510813:04 / dkh 03l25lOB 13:04 / dkh 0312510813:04 / dkh 0312510813:04 / dkh 0312510813:04 / dkh 03125108't3:04 / dkh 03/25108 13:04 / dkh 0312510813:04 / dkh 0312510813:04 / dkh 0312510813:04 / dkh 0312510813:04 / dkh Report Definltions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant tevel. ND - Not detected at the reporting limit.I T t ffiE@reB@ ENERGY LABORATORIES, lNC. . 2393 Salt Creek Hwy (82601) * PO Box \ZSO * Casper, Wy g2602Toll Free 888.235.0515 " 307.235.0515 . FAX 907.234.1639 * casper@energylab.com * vwvi.energytab.com T t I Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL R EPORT Denison Mines (USA) Corp 1st Quarter Groundwater 2008 c08030583-005 MW 32 Report Dale: 04/1 0/08 Collection Date: 03/12108 1 1 :05 DateReceived : 0311 4108 Matrix: Aqueous Analyses Result Units Qualifier RL MCL/OCL Method Analysis Date / By pCi/L pCi/L I I I I I I I I I I I I , Calcium / Cnloride / Ftuoride MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate I /envsrcal pRopERTtES lpHV Solids, Totat Dissotved TDS @ lSO 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) ND mg/L 435 mg/L526 mg/L 30 mg/L 0.2 mg/L 234 mg/L 0.62 mg/L ND mg/L14.9 mg/L 233 mS/L 2420 mg/L 6.89 s.u. 3800 mg/L ND ug/L ND ug/L 1.90 ug/LND ug/L 51 ug/LND ug/L8370 ug/L ND ug/L 5660 ug/L ND ug/L 1 1 ug/L59 ug/L ND ug/LND ug/L ND ug/L ND ug/L3.01 ug/LND ug/L 149 ug/L 2.8 0.6 A2320 B 42320 B E200.7 A4500-Ct B A4500-F C E200.7 A45OO.NH3 G E35s.2 E200.7 E200.7 A4500-SO4 E 1 .t 0.5 't 0.1 0.5 0.0s 0.1 0.5 4 30 0.01 10 5.0 0.50 0.50 25 't0 't0 30 1.0 l0 0.50 10 20 5.0 '10 0.50 100 0.30 15 '10 'L0 44500-H B 03/18/08 17:41 I dd A2540 C 03121108 17:10 tdd 03/18/08 06:36 / bas 03/1 8/08 06:36 / bas 03121108 12:55 / cp 03/21/08 10:00 / ljl 03117108 11:29 / bas 03121108 12:55 /cp 03117108 13:15 / jal 03/18/08 12t14 I iat 03/21/08 12:55 / cp 03121108 12:55 lcp 03/18/08 14:06 / ljl 03/31/08 22:45 / elt-b 03/31/08 22:45 I ellb 03/31/08 22:45 leli-b 03/28108 22:,23 I eli-b 03/31/08 22:45 I eli-b 03/31/08 22:45 /eli-b 031211O8 12:55 I cp 03/31/08 22:45 I eli-b 03/21108 12:55 / cp 03/31/08 22:45 I eli-b 03/31/08 22:45 /eli-b 03/31/08 22:45 I eli-b 03/31/08 22:45 I eh-b 03/31/08 22:45 I eli-b 03/31/08 22:45 I elib 03/31/08 22:45 / eli-b 03/31/08 22:45 I eli-b 03/31/08 22:45 I eli-b 03128108 22:23 I eli-b 03124108 17:50 / crw 03124108 17:50 I crw E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E900.1 E900.1 I I I Report Definitions: RL - Analyte reporting limit. OCL - Quality control limit. D - RL increased due to sample matrix interference. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. H - Analysis performed past recommended holding time. I ffi ,DGT'7FEJ7'flETA ENERGY LABORATORIES, lNC. * 2393 Salt Creek Hvry (82601) * PO Box IZSA r Casper, Wy A2602Toll Free 888-235.0515. 307.235.0515 . FAx 3o7.2g4.tesb - caiper@energylab.com * iww.energytab.com T I I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1st Quarter Groundwater 2008 c08030583-005 MW 32 Report Date: 04/10/08 Collection Date: 03/1 2/08 1 1 :05 DateReceived : 0311 4108 Matrix: Aqueous Analyses Result Units Qualilier HL MCUQCL Method Analysis Date / ByI T I I t I I T I I I I DATA QUALITY A/C Balance (r 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE OBGANIC COMPOUNDS Acetone Benzene Carbon letrachloride Chloroform Chloromethane Methyl ethyl kelone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Sun: Dibromofluoromethane Surr: p-Bromolluorobenzene Surr: Toluene-dB -1.42 % 58.4 meq/L 56.7 meq/L 3700 mg/L 1.03 dec. "/o ND ug/L ND ug/LND ug/L ND ug/LND ug/LND ug/L ND ug/LND ug/L ND ug/LND ug/L 108 %REC 118 %REC109 %REC 100 %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-1 30 80-1 20 80-1 20 Calculation Calculation Calculation Calculation Calculation SW826OB sw8260B SW8260B sw8260B SW826OB SW826OB SW826OB SW826OB SW826OB SW8260B SW826OB SW826OB SW8260B SW826OB 04102108 15:32 / sw 04102108 15:32 / sw 04102108 15:32 / sw 04102108 15:32 / sw 04102108'15:32 / sw 03117lOB 17:03 / dkh 03117108 17:03 / dkh 03117108 17:03 / dkh 03117108 17:03 / dkh 03117108 17:03/dkh 03117108 17:03 / dkh 03117108 17:03 / dkh 03/18/08 15:22 I dkh 03117/08 17:03 / dkh 03117108 17:03 / dkh 03117108 17:03 / dkh O3l17lOB 17:03 / dkh 03117108 17:03 / dkh 03117108 17:03 / dkh t I T Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Nol detected at the reporting limit. I ENERGY LABORATORIES, lNC. " 2393 Salt Creek Hvry (82601) * PO Box g25A " Casper, Wy A2602Toll Free 888-235.0515 * 307.235.0515 * FAx 907.294.1639 * caiper@energylab.com * wwi.energytab.com b I I t LABORATORY ANALYTICAL REPORT g? u(Report Date: 04/10/08 Collection Date: 03/12108 15:25 DateReceived : 0311 4108 Matrix: AqueousAw-L{ Analyses Result Units Qualifier RL MCL/OCL Method Analysis Date / By pCi/L pCi/L I I I t I I T I I I I I MAJOB IONS Carbonate as CO3 Bicarbonale as HCO3 Calcium Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate PHYSICAL PBOPEBTIES 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 (r) ND mg/L 159 mg/L 476 mg/L 99 mg/L 0.6 mg/L 157 mg/L ND mg/L 0.1 mg/L11.4 mg/L 292 mg/L2300 mg/L 7.01 s.u.3540 mg/L '15.2 ug/L ND ug/L 3.33 ug/LND ug/L 29 ug/LND ug/L48 ug/L ND ug/L 1490 ug/L ND ug/L ND ug/L 23 ug/L ND ug/LND ug/L 0.82 ug/LND ug/L 3.21 ug/LND ug/L45 ug/L 0.9 o.4 1 1 0.5 ,1 0.1 0.5 0.05 0.1 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 1.0 42320 B 42320 B E200.7 A4500-Cr B A4500-F C E200.7 A45OO.NH3 G E353.2 E200.7 E200.7 44500-S04 E 03/18/08 14:03 / bas 03/1 8/08 14:03 / bas 03/21108 13:21 /cp 03121 108 10:1 6 / ljl 03117108 11:44 lbas 03121/08 13i21 /cp 03117108 13:23 lial 03/19/08 13:58 /lal 03/21/08 13:21 I cp 03121108 13:21 I cp 03/18/08 14:37 /lil A4500-H B 03/18/08 17:45 I dd 42540 C 03/21108 17i12 t dd E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E900.1 E900.1 03/31/08 23:39 / eli-b 03/31/08 23:39 / eli-b 03/31/08 23:39 / eli-b O3l28l0B 22i53 I eli-b 03/31/08 23:39 / eli-b 03/3'l/08 23:39 / eli-b 03121/08 13:21 / cp 03/31/08 23:39 / eli-b 03/21108 13:21 / cp 03/31/08 23:39 / eli-b 03/31/08 23:39 / eli-b 03/31/08 23:39 / eli-b 03/31/08 23:39 / eli-b 03/31/08 23:39 / eli-b 03/31/08 23:39 / eli-b 03/31/08 23:39 / eti-b 03/31/08 23:39 / eli-b 03/31/08 23:39 / eli-b 03/28/08 22:53 / eli-b 03124108 22'.16 I crw 03124108 22:161 cw T I I Report Oefinitions: RL - Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrix interference. MCL - Maximum contaminant level. ND - Not detected at the reportlng limit. H - Analysis performed past recommended holding time. I ffiEIEEreE@ ENERGY LABORAToRIES, tNC- . 2ggg Salt Creek Hwy (s26ol) . PO Box 3258 * Casper, Wy g2602Toll Free 888.235.0515. 307.235-0515 * FAx go7.234.tesb . caiper@iiergytao.com * www.energytab.comI I I Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTICAL REPORT Denison Mines (USA) Corp '| st Quarter Groundwater 2008 c08030583-009 MW 65 Report Date: 04/10/08 Collection Date: 03/12108 15:25 DateReceived : 0311 4108 Malrix: Aqueous Analyses Result Units Qualilier RL MCL/OCL Method Analysis Date / ByI t t t t I I t I I T I DATA OUALITY A/C Balance (t 5) Anions Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene-d4 Surr: Dibromolluoromethane Surl p-Bromofluorobenzene Surr: Toluene-d8 -3.51 %53.4 meq/L49.7 meq/L 3430 mg/L1.03 dec. "k ND ug/LND ug/L ND ug/LND ug/L ND ug/L ND ug/LND ug/L ND ug/LND ug/LND ug/L 103 %REC102 o/.REC 101 %REC 99.0 %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-1 20 70-1 30 80- 1 20 80-120 Calculation Calculation Calculation Calculation Calculation SW826OB sw8260B SW826OB SW8260B SW8260B SW826OB SW826OB SW826OB SW8260B SW8260B SW826OB sw8260B sw8260B SW8260B 04102108 15:34 / sw 04102/OA 15:34 / sw 04l02lOB 15:34 / sw 04102108 15:34 / sw 04102108 15:34 / sw 03117108 20:58 / dkh 031'17lOA 20:58 / dkh 03117108 20:58 / dkh 03117108 20:58 / dkh 03/17108 20:58 / dkh 03/17/08 20:58 / dkh 03117108 20:58 / dkh 03/17108 20:58 / dkh 03117108 20:58 / dkh 03117108 20:58 / dkh 03117108 20:58 / dkh 03117108 20:58 / dkh 03117108 20:58 / dkh 03117/08 20:58 / dkh t t T Heport Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. ENERGY LABORATOR-IF-S! tNC. '2393 Salt Creek Highway (s2601) . PO. Box 3258 , Casperi Wa260ZrotlFree888.23i.0s15 . s07.tus.05/s . rax so2ist.i63s :r;;i;;dr;;E EI;.ni:*riliiiibiro."*, LABORATORY ANALYTICAL REPORT T I Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 'l st Quarter Groundwater c08030921-016 Trip Blank Report Date: 04D9108 Collection Date: 03/19/08 17:17 DateReceived: 03121 108 Matrix: Aqueous Analyses Result Units Qualifiers RL MCU QCL Method Analysis Date / ByI T I I t I t T I I I I I VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xy'enes, Total Surr: 1,2-Dichlorobenzened4 Surr: Dibromofl uoromethane Surr: p-Bromofluorobenzene Surr: Toluene-d8 ND ND ND ND ND ND ND ND ND ND 103 102 105 100 ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L %REC o/oREC %REC %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-1 30 80-1 20 80-120 sw8260B sw8260B SW826OB SW826OB SW826OB sw8260B sw8260B sw8260B sw8260B SW8260B sw8260B SW826OB sw8260B sw82608 0312410814:40 / dkh 0312410814:40 tdkh 0312410814:401 dkh 0312410814:40 / dkh 0312410814:.401 dkh 0312410814:401 dkh 0312410814:40 / dkh 0312410814:40 t dkh 03n410814:40 I dkh 0312410814:40 / dkh 0312410814:401 dkh 0312410814:40 / dkh 0312410814:40I dkh 03124t08 14:40 / dkh Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit.I t t W ,DIiTdEZJfiilFIIil' ENERGY LABORATORIES, lNC. * 2393 Salt Creek Hwy (S260l) - PO Box 3258 * Casper, Wy A2602Toll Free 888.235.051s * g07.2gS.0S1i * FAX g|7.2g4.t699 * caiper@energytab.com * wwi.energylab.com T I T LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1st Quarter Groundwater 2008 c08030583-01 0 Trip Blank Report Dale: 04/10/08 Collection Date: 03/12108 1 5:25 DateReceived : 03/1 4108 Malrix: Aqueous Analyses Hesult Units Qualifier RL MCL/OCL Method Analysis Date / By T I I t I I I t t I T I VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Sun: 1,2-Dichlorobenzene-d4 Surr: Dibromof luoromethane Surr: p-Bromof luorobenzene Surr: Toluene-d8 ND ug/L ND ug/LND ug/L ND ug/LND ug/L ND ug/L ND ug/LND ug/L ND ug/L ND ug/L102 %REC 99.0 %REC104 %REC 101 %REC 20 .1.0 '1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-1 20 70-1 30 80-1 20 80-1 20 SW826OB SW8260B SW826OB SW8260B SW826OB SW826OB SW8260B SW826OB SW8260B SW8260B sw8260B SW8260B SW826OB SW8260B 03117/OB 15:06 / dkh 03117108 15:06 / dkh 03117/08 15:06 / dkh 03117108 15:06 / dkh 03/17108 15:06 / dkh 03117108 15:06 / dkh 03117108 15:06 / dkh 03117108 15:06 / dkh 03117108 15:06 / dkh 03117108 15:06 / dkh 03/17108 15:06 / dkh 03117108 15:06 / dkh 03117108 15:06 / dkh 03117108 15:06 / dkh T t I Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. ENERGY LABORATORIES, lNC. '2393 Salt Creek Hrghway (52601) . PO. Box 3258 . Caspet W82602 Toll Free 888.235.0515 ' 307.235.0515 , Fax 307.234.1639 . casper@energylab.com . wwwehergylab.com LABORATORY ANALYTICAL REPORT t I Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-007 MW60 Report Date: 04129108 Collection Date: 03/20108 07:13 DateReceived: 03121108 Matrix: Aqueous Artalyses Result Unlts Qualifiers RL MCU QCL Method Analysis Date / By ND 3 ND ND ND ND ND ND ND ND ND I I I I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium /cntoriae / FluonoeY Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate 6.68 s.u. ND 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 0.6 pCi/L 0.3 pCi/L 42320 B 42320 B E200.7 A4500-CtB A4500-F C E200.7 A45OO.NH3 G 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 E200.7 E200.8 E200.8 E2oO.8 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900.1 mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND I I T I Ill T I ffvsrcar- PR.PERTTES r' Solidr, Total Dissolved TDS @ 180 C METALS - DISSOLVED Arsenic Beryllium Cadmium Chromium Cobalt Copper lron Lead zManoaneseI / ilffifl",,, Nid<el Selenium Silver Thallium Tin Uranium Vanadium Zinc RADIONUCLIDES . DISSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (t) - The value under"RL" is the Minimum Detectable Concentration, notthe Reporting Limit 1 1 0.5 1 0.1 0.5 0.05 0.1 0.5 0.8 1 0.0'l 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 1.0 A4500-H B 03/26108 17'.121 dnpA2540C 0312610818:57/dd 0312410822:26 lbas 03l24lOB 22:26 I bas 0410110817:57 I cp 04/03/08 13:40 I jal 03124108 12.,2'l lbas 0410110817i57 I cp 03/26/0811:05/jal 03l24log 11:32Ijal 03128108'16:15 / cp 04/01/08 17i57 I cp 03/31/08 1'l:25 llll 04104108 06:06 / ts 04lO4lOB 06:06 / ts 04104108 06:06 / ts 04l04lOB 06:06 / ts 04t0d.to8 06:06 / ts 04104108 06:06 / ts 03/28108 16:15 / cp 04lO4lO8 06:06 / ts $nBlOB16:15 / cp 04l0/.lOB 06:06 / ts 04lO4lOB 06:06 / ts o4l04/08 b6lb6 / ts 04l04lOA 06:06 / ts 0410110817:57 I cp 0/,lOAlOO 06:06 / ts O3l28lOA 16:15 / cp 04l04lOO 06:06 / ts 04lO4lOB 06:06 / ts 04l04lOB 06:06 / ts A4l01lO8 13:11/crw 04101108 13:11 / cnrv Report Definltions: RL - Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrlr interference. MCL - Maximum contaminant level. ND - Not detec'ted at the reporting limit. U - Not detected at minimum detectable concentrationI T I ENERGY LABORATOR-I-E-5, tNC. ' 2393 Salt Creek Highway (52601) . PO. Box S2i8 . Caspet WA2602Totl Free 888.23s.0s1s . s07.2ss.0515 . Fax szz%a.io1i :diiZi6eiiisy?dl;:r;;: *,r;;;;;;iirb.'*, T T I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1st Quarter Groundwater c08030921-007 MW 60 Report Date: 04129108 Collection Date: 03/20/08 07:13 DateReceived: 03121 108 Matrix: Aqueous Analyses Result Unlts Qualifiers RL MCUQCL Method Analysis Date / By -95.2 o/o 0.063 meq/L 0.002 meq/L T I T I I t t T I I I t T DATA QUALITY A/C Balance (r 5) Anions Cations - The ion balance is not appropriate for near blank results. 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-Bromofl uorobenzene Surr: Toluene-d8 Calculation 04124108 10:24 I sw Calculation 0412410810:24 / sw Calculation Ml24l08 10:24 tsw ND ug/LND ug/L ND ug/L 21 ug/LND ug/LND ug/L ND ug/LND ug/LND ug/LND ug/L 104 %REC108 %REC104 %REC98.0 %REC 20 1.0 't.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-1 30 80-120 80-120 SW8260B SW826OB SW826OB SW826OB sw8260B SW826OB SW826OB sw8260B sw8260B sw8260B SW826OB SW826OB SW826OB SW826OB 0312410818:34 / dkh 0312410818:34 / dkh 0312410818:34 / dkh 0312410818:34 / dkh 0312410818:34 / dkh 0312410818:34 / dkh 0312410818:34 / dkh 0312410818:34 / dkh 0312410818:34 / dkh 0312410818:34 / dkh 0312410818:34 / dkh 0312410818:34 / dkh 0312410818:34 / dkh 0312410818:34 / dkh Repo.t Definitions: RL - Analyte reponing limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit.I I T ENERGY LABORAT0R-IF-9! tlttC '2393 Saft cregf rylg-lway (s260/) . Po. Box 3258 , Caspet Wyaz60zro// Free 888.235.0515 ' 307.*5.0515 . rax eozist.i11i :dipii6"ii6yrali.,ili: *iiiiiibiirb.Tr, I T I LABORATORY ANALYTICAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1st Quarter Groundwater c08030921-008 MW 70 Report Date: O4l29lOB Collection Date: 03/18/08 16:1S DateReceived: 03121 IOB Matrix: Aqueous Analyses Result Units Qualifiers RL MCUQCL Method Analysis Date / By mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L T T t I I I t t T I MAJOR IONS Carbonate as CO3 Bicarbonate as HCO3 Calcium /chloriaeyl Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Sulfate ND 413 345 31 0.3 117 0.50 ND 9.5 298 1760 1 1 0.5 1 0.1 0.5 0.05 0.1 0.5 2 30 0.01 10 5.0 0.50 0.50 25 10 :10 30 1.0 10 0.50 't0 20 5.0 10 0.50 100 0.30 15 10 1.0 A23208 Aa320 B E200.7 44500-Ct B A4500-F C E200.7 A45OO-NH3 G E353.2 E200.7 E200.7 A4500-SO4 E 03124108 22:33 lbas O3l24lAB 22:33 lbas 0410110818:01 / cp C4,10310814:34 ljal 0312410812:25 lbas 0/.l01l0818:01/cp 0312610811:13 ljat 03124108 11:34 1jal 0312810816:18 / cp 04101108 18:01 / cp 03/31/08 12:17 lljl I / P*YSIcAL pRopERrES V !",,0r, Totat Dissotved TDS @ 1Bo 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) 6.74 s.u. 2630 mg/L ND ug/LND ug/L 1.3't ug/LND ug/LND ug/LND ug/L ND ug/LND ug/L 1620 ug/L ND ug/L ND ug/LND ug/LND ug/LND ug/L0.95 ug/LND ug/L6.13 ug/LND ug/L ND ug/L 1.5 pCru 0.4 pCi/L 44500-H B 03/26/08 1Z:13 I dnpA2540C 031261081B:iZ I dd l/ ll E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 E200.7 E200.8 E200-7 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900.1 04l04lOB 06:13 / ts 04l04lOB 06:13 / ts 04104108 06:13 / ts 04104108 06:13 / ts 03/28/08 't6:18 / cp 04104108 06:13 /ts 0328/08 16:18 / cp 0/,l0/,lOS 06:13 /ts 0312810816:18 / cp 04l0/.l08 06:13 /ts 0312810816:18 / cp 0404&806:13 /ts 0/.l04l08 06:13 /ts 04l04lOB 06:13 /ts 04104108 06:13 / ts 03128108 16:18 / cp O/,IOd.IOA 06:13 /ts 0d,l04l08 06:13 / ts O4lO4l08 06:13 / ts 04/01/08 '13:11 / cnr 04/01/08 13:ll /cnrrr- The value under'RL'is the Minimum Detectable concentration, not the Reporting Limit. Report Definltions: RL - Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrix interference. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. H - Analysis performed past recommended holding time.T I ENEPGY LABoRArorytEs! Nc ._2sgs satt crqgf rylgQway (a260t) . p.o. Box J2s8 . caspei wa2602Tott Free 888.235.0515 ' 307.235.05t5 . Fax 307.234.b3e . cisperdenergyhi.coi: w*.iiiibiiab.co, I t I LABORATORY ANALYTTCAL REPORT Client: Project: Lab lD: Client Sample lD Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-008 MW 70 Report Date: 04/29108 Collection Date: 03/18/08 16:15 DateReceived: 03l21lOB Matrix: Aqueous Result Units Qualifiers RL MCUQCL Method Analysis Date / Byri=DATA QUALITY A/C Balance (* 5)I /t2i;:" Solids, Total Dissolved Calculated r TDS Balance (0.80 - 1.20) 4.79 o/o 44.2 meq/L 40.2 meq/L 2770 mg/L 0.950 dec. o/o ND ug/LND ug/LND ug/LND ug/LND ug/LND ug/LND ug/L ND ug/LND ug/LND ug/L 104 %REC107 o/oREC 104 %REC99.0 %REC Calculation Calculation Calculation Calculation Calculation SW826OB SW8260B sw8260B sw8260B SW826OB SW8260B SW826OB SW8260B SW826OB SW826OB SW826OB sw8260B SW826OB SW826OB O4lO7l08't3:36 / sw 0!.|OTIOS'13:36 / sw 04.107108 13:36 / sw O4|OT|OB 13:36 / sw O4lO7l08 13:36 / sw 03124108 23:46 I dkh 03l24lOB 23:46 / dkh O3l24lOB 23:46 I dkh O3D4|OB 23:46 / dkh Ogl24l08 23:46 / dkh 03124108 23:46 I dkh 03124108 23:46 / dkh 03D4t08 23:46 / dkh 03124108 23:46 / dkh o3t24to8 23..46 I dkh Ogl24l08 23:46 / dkh O3l24lOB 23:46 / dkh O3l24lOB 23:46 I dkh 03124108 23:46 / dkh - VOLATILE ORGANIC COMPOUNDS Acetone I Benzene I / carbontetrachtoridel/ chloroformI il*i:,:,iH:"tr NaphthaleneI li,'Jili,,*,, Surr: 1,2-Dichlorobenzene{4I il[{:,r:ft:rr"jH: T I t I I t 20 1.0 1.0 't.0 1.0 20 1.0 1.0 't.0 1.0 80-120 70-1 30 80-120 80-120 Report Definltions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Nol detected at the reporting limit.I I ENERGY LABORATORIF_9, INC '2393 Satt Cregk Highway (52601) . P.O. Box 32SB . Caspe4 Ws2602 To// Free 888.235.0515 ' 307.235.0515 . Fax 307.234.t639 ,'cisper@mergyAn.coi: www.ifriibiiO.con I I Client: Project: Lab lD: Client Sample lD LABORATORY ANALYTIGAL REPORT Denison Mines (USA) Corp 1 st Quarter Groundwater c08030921-009 MW 75 Report Date: 04/29/08 Collection Date: 03/19/08 17:17 DateReceived: 03121 IOB Matrix: Aqueous Analyses Result Units Qualifiers RL MCU QCL Method Analysis Date / ByI I I t I t I T I T t t T MAJOR IONS harbonaleas Co3 / Bicarbonaleas HCO3 / catcium Chloride Fluoride Magnesium Nitrogen, Ammonia as N Nitrogen, Nitrate+Nitrite as N Potassium Sodium Splfate /exvsrceu PRoPERTTES /pn 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 NEOIONUCI.IDES . DTSSOLVED Gross Alpha minus Rn & U Gross Alpha minus Rn & U Precision (*) ND mg/L476 mg/L 500 mg/L 20 mg/L0.2 mg/L148 mg/L ND mg/LND mg/L 11.7 mg/L337 mg/L 2300 mg/L 7.81 s.u. 3530 mg/L ND ug/L ND ug/L 1.92 ug/LND ug/LND ug/L ND ug/L ND ug/LND ug/L 2130 ug/L ND ug/L ND ug/LND ug/LND ug/LND ug/L 0.70 ug/LND ug/L132 ug/LND ug/L 13 ug/L 0.9 pCi/L 0.3 pCi/L 1 1 0.5 1 0.1 0.5 0.05 0.1 0.5 2 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 '1.0 E200.8 E200.8 E200.8 E200.8 E200.8 E200.8 E200.7 E200.8 E200.7 E200.8 E200.8 EzoO.7 E200.8 E200.8 E200.8 E200.7 E200.8 E200.8 E200.8 E900.1 E900.'l Fc320 B F232OB E200.7 44500-Ct B 44s00-F c E200.7 A45OO-NH3 G E353.2 E200.7 E200.7 A4500-SO4 E 03124108 22;47 I bas O3l24lOB 22:47 I bas 0410110818:(X / cp 04/03/08 14:37 I jal 03124108 12:28 lbas O4lOllOg 18:04 / cp 03126108 11:15 I jal 0312410811:37 lial 0312810816:21 I q O4l01lOB 18:04 / cp 03/31/08 '12:27 lljl 44500-H B 03/26/08 17:15 / dnpp'2540C 0312610818:58/dd 04104108 06:20 / ts 04l04lOB 06:20 / ts O4lO4lOB 06:20 / ts O4l04lO8 06:20 / ts Ml04l0g 06:20 / ts O4lO4lOB 06:20 / ts 0312810816:21 I cp O4l0/.lOB 06:20 / ts 0312810816:21 I cp 04lMl0g 06:20 / ts 04lO4nB 06:20 / ts o3r2s/odi6:zr lcp 04104108 06:20 / ts 0d.l04l08 06:20 / ts MlO4lOS 06:20 / ts O3l28lOB 16:21 I cp O4l04l0g 06:20 / ts O4lMlOB 06:20 / ts o!,lO4lOS 06:20 / ts 0410110813:11 / cnnr 0410110813:11 / crw- The value under "RL'is the Minimum Detectable Concentration, not the Reporting Limil Report Definitions: RL - Analyte reporting limit. QCL - Quality control limit. D - RL increased due to sample matrlx interference. MCL - Maximum contaminant level. ND - Not detected at the reporting limit. U - Not detected at minimum detectable concentrationI I ENEEGY LABORATOHF_S! NC ' 2393 Salt Creek Hig_hway (52601) . P.O. Box J2S8 , Casper, Wy A2602Toll Free888.235.0515 ' 307.235.05/5 , Fax 307.234.t03s ,'cisperdenergytab.coi: *w*.iiiibiiab.-ton t I Glient: Project: Lab lD: CIient Sample lD LABOMTORY ANALYTICAL REPORT Denison Mines (USA) Corp 1st Quarter Groundwater ,/c08030921-OO9 t/ MW 75 Report Date: 04/29/08 Collection Date: 03/19/08 17:17 DateReceive d: 03121 108 Matrix: Aqueous Analyses Result Units Qualifiers RL MCU QCL Method Analysis Date / ByI I t I I I T T t I I t I DATA QUALITY /NC Balanc,- (t 5)y' Anion. Cations Solids, Total Dissolved Calculated TDS Balance (0.80 - 1.20) VOLATILE ORGANIC COMPOUNDS Ac€tone Benzene lCarbon tetrachloride l/ chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzene-d4 Surr: Dibromofl uoromethane Surr: p-Bromofl uorobenzene Sur: Toluene-d8 -3.70 o/o 56.2 meq/L52.2 meq/L 3560 mg/L 0.990 dec. o/o ND ug/LND ug/L ND ug/LND ug/LND ug/LND ug/LND ug/LND ug/L ND ug/L ND ug/L'r08 %REC128 %REC109 %REC99.0 %REC 20 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 80-120 70-1 30 80-120 80-120 Calculation Calculation Calculation Calculation Calculation SW826OB SW826OB SW826OB sw8260B SW826OB SW826OB SW826OB SW826OB sw8260B SW826OB SW826OB SW826OB SW826OB sw8260B 04107108 13:36 / sw 04107108 13:36 / sw 0410710813:36 / sw 04107108 13:36 / sw O4l07lOB 13:36 / sw 03124108 20:31 / dkh 03124108 20:31 / dkh O3l24l0e 20:31 / dkh 03124108 20;31 / dkh 03124108 20:31 / dkh 03124108 20:3'l / dkh 03124108 20:31 / dkh O3l24lO8 20:31 / dkh 03124108 20:31 / dkh 03l24lOB 20:31 / dkh 03124108 20:31 / dkh O3l24lOB 20:31 / dkh 03124108 20:31 / dkh O3l24lOB 20:31 / dkh Report Definltions: RL - Analyte reporting limit. QCL - Quality control limit. MCL - Maximum contaminant level. ND - Not detected at the reporting limit.I T I ENEFGY LAEonAroilEs, lNc. ' ?aga satt creek Hrghway (sz60t) . po. Box JZSB , casper wy ap60z Toll Free 888.235.0515 ' 307.235 0515 . Fax 307.234.1639 ,'cispertitenergylab.con. wwneitergytab.ii I t t T I ANALYTICAL SUMMARY REPORT April 10,2008 Oenison Mines (USA) Corp 6425 S Hwy 191 Blanding, UT 8451 1 Workorder No.: C08030583 Quote lD: C1640 - POC Wells I Monthly Groundwater Sampting Project Name: lst Quarter Groundwater 2008 Energy Laboratories, lnc. received tho following 10 samples from Denison Mines (USA) Corp on 3n4f2OOA for analysis. Sample lD Client Sample lD Collect Date Receive Date Matrlx coCososss-ooi rrr\iv ls 031'1 1/08 10:50 03/14/08 Aqueous Metals by ICP/ICPMS, DissolvedIc08030583-002 MW 18 03/1 1/08 13:45 03/14/08 Aqueous Same As Above c08030583-003 MW 19 03/1 1/08 15:55 03/14/08 Aqueous Metals by ICP/ICPMS, Diesolved Fluoridetc08030583-004 M\l 17 03|1AOA 09:00 03/14/08 Aqueous Metals by ICP/ICPMS, Dissoltred c080s058$005 MW 32 03/12108 1 1 :05 03/14/08 Aqueous Metals by ICP/ICPMS, Dissolved Alkalinity QA Calculations Chloride Fluoride Nitrogen, Ammonia Nihogen, Nitrate + Nitrite pH Gross Alpha minus Rn222 and Uranium Solids. fotal Dissolved Sulfate SW8260B VOCs, Standard List I I I c08030583-000 MW 26 03l12lOB 1 2:09 03/14/08 Aqueous Same As Above I c08030583-007 MW24 03l1AOa 1Z:aa 03/14108 Aqueous Same As Above C08030583-008 f\,t\ / 28 0311 2/08 1 5:25 03/14108 Aqueous Same As Above c0803058$009 MW65 $t1?/0815:25 03/14/08 Aqueous Same As AboveI I i I I I I I C08030583-01 0 Trip Blank O3l12l0g 15:25 03/14/08 Aqueous 5\1182608 VOCs, Standard List Ae appropriate, any exceptions or problems with the analyses are noted in tha Laboratory Analytical Report, the QA/OC Summary Report, or the Caso Narrative. lf you have any questlons regarding these tests results, please call. ReportApprov"aa@ ENEEOT LAaoFAroilEs, lMc. , 2393 sat creek HEhway (az60t) . po. Box azSB , crspet wy oz60pToll Free 888.?35.0515 ' 307,235.0515 . Fax 307.234.1639 .'casperrdtenergylab.con . wvw.iieigyAO,coii- QA/QC Summary Report Client: Projoct: Denison Mines (USA) Corp lst Quarter Groundwater 2008 Report Date: 04/10/08 Work Order: C08030583 Rosult unltr RL %REc Low Llmrt Htgh Llmlt RpD RpDLlmlt eual Mothod: A23mB Samplo lO: tilBLK-r Alkalinity. Total as CaCO3 Carbonats as CO3 Bicarbonate as HCO3 Sample lD: LCS-{ Alkalinity, Total as CaCOS SamplelD: C0E030443-00ZBMS Aikafinily. Total as CaCO3 Sanple l0: C08030,t43-{,028lJtSD Alkalinily. Total a$ CaCO3 Method Btank ND mg/[ ND mg/[ ND mg/L Laboratory Control Sample 5030 mglL Sample Matrix Spike 438 mg/L Sampls Metrix Spik6 Ouplicatg 439 mg/L Run: MANTECH_080318A RUNr MANTECH-o8O3'8A 101 90 1 l0 Run; MANTECH_080318A 100 90 110 Run: MANTECH_080318A 10t 90 1t0 0.3 0.2 1 1 1.0 ,|.0 1,0 Batctr: R98213 03/1 7/08 1 s:56 03/17/08 14:05 03/17/08 14:29 03/1 7i08 I 4:37 10 I I T T t I T I I t T I I I t I T I I Method: A2320 B Sample lD: illBLK.1 Alkalinity, Total Bs CaCO3 Catbonatc as CO3 Eicarbonato as HCO3 Samplo lDt LCS.l Alkalinity, Total as CaC03 Sample lD: C08030583.00881iIS Alkalinily, Total as CaCOS Sample lor C08030583{0BBMSD Alkalinity, Total as CaCO3 Mothod Blank NO mg/L ND mg/L NO mgA Laboratory Conkol Sampls 4970 ngL Sample Matrix Spike 249 rngtl Sample Malrix Sp ike Ouplicate 249 mg/L Run: MANTECH_080318C Run: [,IANTECH_0803 18Cg0 110 Run: MANTECH_080318C s0 't r0 Ruo: MANTECH_080318C 90 1 10 0.1 o.2 1 1 1.0 1.0 1.0 99 103 r03 Balch: R98276 0U18/08 l3;20 03/1 &/08 I 3:28 03/18/08 13:a9 03/18i08 13:56 t0 Method SamplelD: MBLK1_080311 Solids, Totaf Dissolved TDS @ 180 C Sample lD: LCS1_080321 Sollds, Total Dissolved TOS @ 180 C Samplo tO: C08o30563.0odBMS Solids, Total Dissolved TDS @ 180 C Sampletor co8030583{08BusD Solids. Total Dissolvod TOS @ 180 C Melhod Blank ND mdL Laboratory Control Sample 992 mdl Samplo Matrix Spike 5580 mg/L Sample Matrix Spiktr Dupticate 5550 ms/L Run: BAL-1-08032.l8 Run: BAL-1;0803218 90 110 Run: BAL-I_0803218 90 110 Run: BAL-1_08032'lB 90 r10 Batch: 080321 2_SIDS.TDS-W 0U21/08 17:04 0V21108 l7;04 03/21108 l7:1 t 0U21/08 17: 1 1 0.6 10 99 97 10 r0 RL - Analyte repoil{ng limit.ND. Not detected at the reporting timit. :-- EN€frGf LAAOfrArOnES, tAlC ' 2393 Salt Creek Higtrway (52601) . EO. 1ox 325s , Caspe4 WY 82602fol Free 88A.235.0515 ' 302235.0515 ' Fax 307.234.16-39 .'casper@energylab.con , www.ehergytab.con QA/QC Summary Report Cllont: Prolect: Denison Mines (USA) Corp 1sl Quarter Groundwater 2008 Report Date: 04/10/08 Work Order: C08030583 Result RL %REC LowLlmlt HighLlmlt RPD RPOLlmit Qual I Method: Samplc lD: Chlorida Samplc lD: Chloride Semple lD: Chlorids Sample lD: Chloride 445004t B MBLK$,O8032IA c08030583{1098[ts c08030503.{r09BrrtsD LCS3548032{A Method Blank ND mg/L Sample Malrix Spike 447 mg/L Simple Matrix Spike Duplicato 447 mg/L Laboratory Control Sample 3510 mg/L Batch: 080321 A-cL-TTR-W Run: TITRATION_08o3Z1A 0s/21/08 08:,13 98 98 1.0 1.0 1.0 Run: TITMTION_080321A 90 110 Run: TITMTION_060321A 90 110 Run: TITMTION_080321A 90 1r0 03/21/08 10:56 03/21/08 10:570.0 10 03/21l08 11:02 r04 91 I I T T t T tl I ll l lll I ilr I li I ri I ri ti Ili Ilt ri il i I Method: Sarnple lD; Fluorid6 Sample lD: Fluo,ide Samplo lO; Fluoride Sample lO: Fluodde Sample lD: Fluoride Sample lD: Fluorid6 A4500-F C MBLK.l LCS.r C08030562-002CltlS c08030562{02CnSD c0803068t{09BMg c0803058r.0098M9D Method Blank ND mg/L Laboratory Control Sample 1.00 mg/L Sample Matrix Spike 1.,tS mg/L Sample Matrix Spike Duplicate 1.52 ng/L Sample Matrlx Spike 1.52 mg/L Sample Matrix Spike 0uplicalo 1.55 mq/L Run: MANTECH_080317A Run: MANTECH_080317A 90 110 Run: MANTECI-l_08031 7A 90 1r0 Run: MANTECH_080317A s0 1 10 2.0 Run: MANTECH_0803t7A 90 110 Run: MANTECH_0803!7A 90 fio 2.O 0.05 o.10 0.10 0. 10 0.1 0 0.10 t00 r07 Batch: R98167 03/.l7/08 09:49 03/1il08 09:52 Ag17l08 1l:10 0il17tA$ 11:13 l0 03/17/08 1 1:47 03117/08 1 l:51 10 Itlsthod: Sampl€ lD: pH 44600-H B lcvt_080s18 2 Analytical Run: ORlON555A_08031 8B 03/18/08 16:52lnitial Calibration Verilication Standand6,80 s.u. 0.010 10299 Iglethod: Sample lD: pH A4500-H B c08030510.0108ouP Sample Ouplisato 7.64 s.u.0,010 Bun: OR|ON555A 0803188 Batch: 0803'18_2_PH-W 03/18108 17:1O 0.4 10 Qualifiers: RL - Analyto roporting lirnit ND - Not detected at the reporting limit, ENEEGY LABORATdRIES, lttc. , zgss gat creek Hrghway (B?60Q . po. tux azsi , caspet wy ae60zlc// Free 888.235.05/5 ' 307.235.0515 ' Fax 307.234. t6is9 ,'casper@onergytai coi . www.chergytao.Zii- OA/OC Summary Report Client: ProJect: Denison Mines (USA) Corp l st Quarter Groundwat€r 2008 Reporl Date; 04/10/08 Work Order: C08030583 Analyt6 Mothorl: A4500.NH3 G Samplo lO: MBLK.1 Nltfogen, Ammonia as N Sampfe l0: LCS.2 Nitrogen, Ammonia as N Samplc lD: : G08030538{02BMS Nitrogen, Ammonia as N Samplc lDr G08030538{02BMS0 Nitrogeh, Ammonia as N RL %REC Lour Llmlt Htgh Llmtt RPD RPDL{mlt Qual I Method Blank ND mg/L Laboratory Control Sampl6 20.2 mg/L Sampla Matrir Spike 1.67 rnS/L Sample MaVix Spike Ouplicets1.71 mg/L o.02 0.20 0.050 0.050 t0t M RUn: IECHNICON-o803 I 7A Run: TECHNICON-OEO31 7A 80 120 Run; TECHNICON_0803t74 80 120 Run: TECHNICON_08o3t 7A 80 120 Batch: R98193 03/17108 10:51 03/'t7108 10 53 0311 7/00 I 3:09 OJllTlOB 13:11 202.4 I t T I T I t I I I I I I T I I t T I Mcthod: Ail500.so4 E Sample lO: LCS-'I_080318 Sultatg Sample l0: MBLK-1_080018 Sulfato Sample l0: C08030583-.0068MS Sultrt€ Sample lDr C08030583{06BMSD Sulfate Laboratory Control Sample 5000 mg/L Melhod Blank ND mg/L Sample Matrk Spike 3820 mg/L Sampto Matrlx Spiks Ouplicate 37AO Ir.SlL Run: TURB-r_080318A 104 90 1 10 Run: fURB-2_080i18A Run: TURB-2-08B18A't03 90 1 10 Run: TURB-L080318A 90 110 Batch: 08031 8_1_SO4-TURB-W 03118/08 08:27 03/r 8/08 09;30 03/18/08 14:16 03/1 8/08 1 4:1 I 1.0 10 0.6 Qualifiers: RL - Anslyts reportinE limit.NO - Not detected at the reportlng limit. I _ENERQY LAgoflAroilEs, tNC - zJOi salt creek H!?lway (az60t) . po. Box s2s? , caspet wy az60zTott Free 888.235.05t5 . 307.235.051i . Fax a07.294.63e .'ciiperti,energ@.iin , www.iiergytao.ioi-I QA/QC Summary Report Client Denison Mines (USA) Corp Project: 1st Quader Groundwater 2008 Report Date: 04/10/08 Work Oder: C08030583 T lr t l l--i Analyte Method: E200.1 Sample lO: QCS Caicium Chromium lron Magneslum Manganose Potassium Sodrum Zific 48.0 mg/t 1.01 ms/t 5.OS mg/L 48.5 mg/L 4.65 mg/L 47.3 mg/L 48.7 mg/L 0.96'l mg/L lnitial Calibratlon Verification Standard RL YoREC Low Ltmlt High Ltmlt RPD RPDLlmit Quat I Analytical Run: SUB.B10E355 03/28/08 t8:51 I t 1.0 0.050 0.030 1.0 0.010 r.0 1.0 0.0r 0 96 r01 101 97 93 95 97 s6 110 110 110 1l0 110 110 110 110 90 90 90 90 90 90 90 90 I I I I I t I I I Methodr E200., Sa.nplo lD: I[4B.TJAD|3080328A Calcium Chromium lron Magnesium Manganese Potassium Sodium Zinc Sanple lO: LFB.TJADlS0t0328A Catcium ChromJum lron Magn6slum Manganese Polassium Sodium Zinc Sample lD: C0803058s.006D Chromium Zinc Sample lO: C08030583{06D Chromium ztnc Method Blank ND mSiL N0 mS/L ND mg/L ND mg/L ND mgA ND mg/L NO mg/L ND mg/L Laboratory Fortified Blank 48.8 mg/L 1.04 mg/L 5,22 mgiL 49,0 mglL 4.E4 mg^ 47.8 mg/L 49-0 mg/L1.0! ,ItgtL Sampte Matrix Spike Run: SUB-B108355 Run: SUB-Bi08355 85 1t5 85 115 85 115 85 l1s 85 115 85 1!585 tt5 85 1r5 Run: SU8-Bi 08355 70 t30 70 130 Run: SUB-8108355 Eatch: B_R108355 03/28/08 15:39 03/28/08 15:43 0388i08 22:30 03/28/08 22:3a 20 20 0.02 0.004 0.005 0.1 0.00r 0.07 0.04 0.001 1.0 0.050 0,030 1.0 0.0r0 '1,0 '1.0 0 0't0 98 104 104 s8 97 96 98 10r s9 100 4.96 mg/t 0,021 4.99 mg/L 0,010 Sample Matrix Spike Duplicato 4 98 mgfl- 4.95 mglll. 100 70 99 70 0.021 0.0r0 130 130 0.4 0.8 I I I Qualiflers: RL - Analyte reporrrhg limit.ND. Not detected at the reporting limit. I FilEfrGf LAAOfrAfORE_g lltti '_2393 Satt Creei Highway {s260t) - P,O. Box 3258 , Casper Wy Ae602ToI Free 888.235.05ts ' 307.235.0515 . Fax 307.234.1539 , casperaienergytai coi: ww*.iiiiiitrb.Tc,ii-I t QA/QC Summary Report Clienh Denison Mines (USA) Corp Prolece 1st Quarler Groundwater 20OB Report Date: 04/10/08 Work Order: C08030583t I T I I I t I I T I I I RL %REC LowLlmlt HtghLlmtt -------iRPD RPoLlmit Qual l Mothod: 8200.7 Semple lO: !iI6.080321A Calcium lron fulagnesium ManganBse Potessium Sodiurn Sample lor LFB{,80321A Calcium lron Magnesium Manganese Potessium Sodium Sample lDr C08030583-0050MS2 Calcium lron Magnesium Manganese Potassiurn Sodium Sample lD: C080305E3-005DMSD2 Calcium lron Magnesium Manganesc Potassium $odium Mettod Blank ND mg/L ND mg/L ND mS/L ND mg/L NO mgll ND mg/L Laboratory Fortilied Blank 48.7 mg/L 0.976 mg/L 48.0 mg/L 1.O3 mg/L 45.5 ,flg/L 48.2 mg/L Sample MatrixSpike 748 mgL 12.9 mglL 462 mg/L 10,4 mg/L 244 mgil 473 mg/L Sample Matrix Spike Dupllcate 147 mg/L 12.9 mg/L 483 mg/L 10.4 rnglL 239 mg/L 463 mg/L Run: lCP2-C_080321A 0.1 0.005 0.04 0.0003 0-o2 0-8 0.50 97 0.030 98 0,50 s6 0.010 103 0.50 91 0.77 96 0.53 87 0.030 88 0.50 ge 0.010 93 0.50 90 3.9 94 053 87 0.030 90 0.50 90 0.010 93 0.50 88 3.9 90 Run: lCP2-C_08032tA 85 125 85 125 85 125 85 125 65 125 E5 't25 Ruo: lCP2.C_080321A T0 '3070 130 70 130 70 r30 70 130 70 130 Run: lCP2-C_080321A 70 130 70 130 70 130 70 r30 70 130 70. 130 Batch: R98494 03/21/06 10:58 o3/2'1l08 11:01 03/21/OB 12:58 03121I08 1 3:02 20 20 20 20 20 20 0.2 0.6 0.2 0.1 2.0 2.2 t t I Qualifiers: RL - Analyte repofing limit.ND. Not detected at the report ng limit. I -ENlRor LAaofralofrtEE tNC. . zJtJ salt creet Hgrhway (Bt60t) , po. Box J2s8 , caspec wy az60aTotlFree6ffi.235.05t5 ,J?z.z3s.lsts ,Fax s07.234.t039 ,'citsperaienergyhi.coi.www.iheriiao.cil- I T QAIOG Summary Report Cltsne Denison Mines (USA) Corp Projock lst OuarterGroundwater20OB ReportDate: O4/10/08 Work Order: C08030583Ii T IIi I I I Result Unlts RL %REC Low Llmtt Hlgh Ltmtt RpD RpDllmit Oual Itiethod: E200.8 sample lD: QCS.I!iE0801258,0?120 lnltisl calibrrtion Verification standard Analyticel Run: SUB-B108454 03i31/0E 1 3:12 Argenic B€ryllium Cadmlum Cobait Copper Lead Mercury Molybdenum Nickel Sehnium SilvEr Thallium Tin Uranium Vanadium 0.0503 mg/L 0.0248 mg/L 0.0261 mg/L 0.0506 mdl 0,0502 mg/L 0.0502 mg/t 0.00215 mgtr 0.0495 mgtr 0.04S8 mg/L 0.0509 mg/L 0.0256 m{,tr 0.0503 mg/L 0.0502 mg/t 0.0200 mg/L 0.0496 mg& 0.0050 101 0.0010 99 0.0010 104 0.010 101 0.010 100 0.010 ,00 0.0010 107 0.0050 99 0.010 t 00 0,0050 102 0.0050 103 0.'10 toi 0.10 r00 0.0010 100 0.10 100 90 EO 90 90 90 90 g0 90 90 90 90 90 90 90 90 110 110 110 110 1r0 110 110 110 tr0 t10 110 tr0 110 110 110 I T I t I t t Method: E200.8 Sample lD: LRB Arsanic Beryllium Cadmlum Cobalt Copper Leed Mercury Motybdenum Nickel Selsnium Silver Thallium Tin Uranium Vanadium Sample lD: LFB Arsenic Beryllium Caclmium Cobatt Copper Method Blank ND ND ND NO NO ND ND NO ND ND ND ND ND NO ND mg/L mSiI mg/L rndL nglL mglL mg/L mg/L mgrL mglL mgiL mg/L mg/L mg/L mg/L 4E-05 4E-06 3E-06 sE-06 3E-05 3E-06 1E.05 9E-06 3E.05 0.0001 7E46 4E-06 8E-06 2E-06 3E-05 0.0050 0.0010 0.0010 0.010 0.010 Run: SU&8108454 Run: SUB-B108454 8s 115 Batch: B_R108454 03/31i08 16:1 1 03/31/08 16:tBLaboralory Fortified Blank 0.0522 mg/L 0.05,15 mg/L 0.0525 mg/L 0.0520 mgll 0.0506 mg/L 104 109 r05 104 l0r 115 rr5 il5 't'15 85 85 85 85 I I I Qualifiers: RL - Analyte roporting limit.ND - Not detectod at the reporting limit ElvERoY LAaoRAroREs, tNC. - 2J9J sattcreeh Hlg-lway (se60t) . po. Box JZis . caspet; wysz60zlott free 880.2.i5.05t5 ' 307.205.0515 . Fax 30z2ea. fis :caipii(iienedytZ-i'im . wwwiiiriiat.iii- I t QA/QC Summary Report Clienfi Denison Mines (USA) Corp Projact; 1st Quarter Groundwater 2008 Report Date: 04/10/08 Wort Order: C08030583 lr I Analyte ilothod: E200.8 Sample lD: LFB Lead Mercury Molybdenum Nickel Selenium Thallium Tin Uraoium Vanadium Sample lD: 808031991{01Alt,ls Arsenic Eeryllium Cadmium Cobalt Copper Lead Mercury iilolybdenurn Nickel Selenium Silver Thallium Irn Uranrum Vanadium Sample lO: 808031991{0lA[rSO Ars€nic Berylliufi Cadmium Cobalt Copper Lead Mercury Molybdenum Niclal Selenium SilvBr Thalllum Tin RL o/oREC LowLlmlt HighLlmlt *o -;.; *., -l 85 85 85 85 85 85 85 E5 85 I i TIil I 70 70 70 70 70 70 70 70 70 70 70 70 70 ti I ! ti I ri rl Laboratory Fortified Blank 0.0530 mg/L 0.010 0.00103 mg/L 0.0010 0.053'l mg/L 0.0050 0.0507 mg/L 0.010 0.0520 mg/L 0.0050 0.0532 rns/L 0.10 0.0531 mg/L 0-10 0.0534 mgtl 0.0010 0.0521 mg/L 0.10 Sample Matrix Spike 0.0525 mglL 0.047'l mglL 0-0495 mg/L 0.0510 mglL 0.0620 mg/L 0.0527 rngtL 0,00103 mg/L 0.0576 mg/L 0.0492 mS/L 0.132 mg/L 0.0112 mg/L 0.0517 mg/L 0.0575 mgil 0.0735 /hg/L 0.0514 rng/L Sample Matrix Spike Dupilcate 0.0530 mg/L 0.0050 0.0471 mg/L 0.0010 0.0501 mdL 0.0010 0.0516 mg/L 0.010 0.0539 mgil 0.010 0.0536 mg/L 0.010 0.00115 ms/L 0.0010 0.0585 mS/L 0.00s0 0.0512 mg/L 0.0t00.137 mg/L 0.0050 0.0169 @L 0.0050 0.0525 rrqlL 0.0050 0.0s78 mglL 0.r0 0.0050 0.0010 0.0010 0.010 0.010 0.010 0.0010 0.0050 0.010 0.0050 0.0050 0,0050 0.r0 0.0010 0.10 r06 103 106 10i 104 106 r06 ,t07 r04 104 g'l 98 101 96 103 103 104 97 91 56 103 101 107 la 105 s4 100 102 99 105 115 106 101 100 85 105 102 115 115 115 115 115 115 t15 't 15 115 Run: SUB-8106454 70 70 70 t0 70 70 70 70 70 70 70 70 70 70 Run: SUB-8108454 Run: SU8.8108454 Batch: B-R108454 03/31/06 16:18 04t01fiB A435 04/01/0S 04:42 20 ?0 20 20 20 20 20 2A 20 20 20 20 20 130 ,30 130 130 130 130 130 r30 130 r30 130 130 ,30 130 r30 130 130 't 30 't 30 130 130 r30 130 ,30 130 130 r30 130 1.0 0.0 1.3 1.2 2.9 1.7 11 1.6 3.9 J.O 41 1.5 0.0 Quallflers: RL - Analyte reporting limit. R - RPD axceeds advisory limtt, ND - Not detecled at thB reponinE limit. S - Spike recovery outsi<te of advlsory limits. I ENERGY LAAOf,ATOfrIES, lNC. ' 2393 Salt Creek Highway {5260t) , PO. Box JZ58 . Casper, Wy e160e1bt Free 888.235,0s1s , Jlz.zss.liti , Fax slz.z1i.trts .bisiirdenerbyEii,cbm . wwirteisyao.-ioi- I I QA/QC Summary Report Client: Project; Denison Mines (USA) Corp 1st Quarter Groundwater 2008 Report OatE: 04/10/08 Work Order: C08030583I I anaryts Resurt RL %REc Low Llmlt High Lhtt RPD RPDLimlt Qual I -l Mcthorl: 8200.8 Sample IO: 808031991{olAMSD Uranlum Vanadium Sample Matrix Spike Ouplicato 0.0746 mg/L 0.0534 mgll Run: SUB-8108454 Batch: B_R106454 04l0ll08 04:42 20 2A 0.0010 0. 10 130 r30 1.4 0.0 109 70 107 70 T li li I I I lt l I li l ti Mothod: Sample lD: Selenium Thallium Uranium E200.8 LRB Samp,e lD: LFB l Selenium Thallium Uranium Sampla lD: C0803058t.001AMS4 Seleniunl Thallium Uranlum Sample lD: C08030583.001AMSD,1 Selenium Thallium Uranrum Sample ]D: C08030583.004AMS4 Selenium Thallium Ut,anium Sampto lD: C08030583.004AMSD4 Selenium Thallium Uranium Mehod Blank ND mg/L ND mSlL ND mg/L Laboratory Fortified Blank 0.0514 mg/L 0.0506 mg/L 0.0502 mS/L Post Digestion Spike 0,167 mg/L 0.051 1 mg/L 0.100 mg/L Post Digestlon Spike Duplicaro 0,165 mg/L 0.0493 mgiL 0.0979 mg/L Post Digestion Spiks 0.0817 mg/L 0.0519 mg/L 0.0812 mg/L Poct Dlgestion Spiko Oupticate 0.0615 mg/L 0.0496 mgiL 0.0797 mg/L Run: ICPMS2C-080328A Run: ICPMS2-C_080328A 85 115 85 115 85 115 Run: ICPMS2-C_080328A 70 130 70 130 70 130 Run: ICPMS2-C_060328A 70 130 70 130 70 130 Run: ICPMS2.C_080328A 70 130 70 130 70 130 Run: ICPMS2-C-080328A 0.0002 lE-05 1E45 0.0010 103 0_0010 10t 0.00030 100 0,0010 'r 08 0.'10 102 0.000s0 104 0.00r0 0.1 0 0.00030 0.00r 0 0.10 0.00030 0.0010 0,r0 0.00030 103 98 9q 110 103 106 109 70 s8 70103 70 Batch: R98784 03i28i08 12:09 03/28/08 12:15 03/2U08 16:50 03f28/08 16:57 20 20 20 Q3l28lOB 17:2a 03/28/08 l7:31 2A 20 20 130 130 130 1.4 0.0 2.5 0.5 0.0 t.6 Qualifiers; RL . Analyto reporting lirnit ND. Not detected at ths repofing tlmit, I t M rif;F[cyLAEsoRAroHEs, t,C-t'rr!r;,f![g:;;Ii;g!-:iir,r,fr;,i;E E:;"rff ;"r,:ii:btriiiftr, I I p*J"ct rsteuarterGroun dwaterz'*E ff:.['j:: :Xulfl:r,ll iI I I ]il::',r' T:I.r M€thod Brank Run:rECHNrcoN-oBo3r8A 0u1B/08 10:rt I i ffiffi;::,,: ',**,,1o".,,,1,n1,,r. :, o *un,rEcHN,coN-oE031BA 03,18,0810:14 I ti ii:il:1";,#:li;,r:'ill'.s sampre,il'*'#;. 010 ,u *'n'rEcHN'|coN-080318A 0s/r8/0812:26 I Sample l0: C08030568-003DMSD Sample Matrix Splke Duplicate Run: TECHNTCON_0B03IBA 03/18/08 12:29lriEatch: R9833'l I ] Sample lD; MBLK.i Merhod Btank Run: TECHNTCON-0803|9A 03/19/08 t2:it3 I li "-.;J, '-+Nirrite as * tro".t"]o"".rl,tlt"rr," 0 03 Run: rECHNrcoN-,8.3leA 03/1e/08 12:4s I I ffiffi#;;.,' .,*,"'*'i,.*.]l' .,, ,]] *,^,,lln*,.o*lJoo.,,o 03,,e,0813:a3 I l' ilH:::ffi::1ffi::Ltt.* samproMatrixspikoDuprhate o.,ro ,ou *'n'rEocHNrcoN-08o"to,o 03/1e/0813:15r I Il :il::,fi;:;,:;'#r "oo,"';;,'o.T;;;"n ., o nu *un' BE.TH.LD 770-1-o8o3ieA 03'J24'08 r7:s0 I li ::ff';fi,I:;llfIJ Method.Braik pcitL .r0 Run: BERTH.LD 77G1-oB03reA 03i24/0817:50 I i Samplo lD: c0E030583{0gAIillS sample Matrix splke Run: BERTHoLD 770-1 _080319A 03/24108 22: 16 I :l ililH;il;;;,,^,,' .,,.,o',1.',,o.',1*'"",0u** ,, :: -,' "lo*,,o*,1'ol,-o*.,,o 2o324oa22,6 I ENE4GY LAEORATOfrIES, lNC. , 2393 Salt Creek Htghway (8260t) , PO. &ox 3258 - Caspeti WY82602 Toll Free888.235.0515 ' 307.235.0515 , Fax 307.234.1639 ''casper@enetgytab,cont.www,eitergylab.con t T QA/QC Summary Report Client Denison Mines (USA) Corp Prolect: 1st Quarter Groundwater 2008 Report Date: 04/10i08 Work Order: C08030583 t--- 1 Analyte _ Roeult Units _ RL %REC Low Llmlt Hlgh Lhlt RPD RPOLlmlt Qual J I T Ir ri l li I t, i lj l I t: I lr l I ti I -I Metftod; SW8280E Samplo lD: 17-Mar.08_LCS_3 Benzene Carbon tetrachlonde Chloloform Chloromethane m+p-Xylenos Melhyl ethyl ketone Melhylens chloride Naphthalene o-Xylene Toluerro Xylenes, Total Sun: | .2-Dlchlorobonzene{4 S u rr Olbromo flu orcmclhane Sun: p.Bromolluorobenzeno Surr: Toluene-d8 Samplo lD: 17.ilar{8_t'IBLK_6 Benzene Cerbon totrachlorid€ Chloroform Chloromethane m+p.Xylsn6s M€thyl elhyl ketone Methylene chloride Naphthalsns o-Xyleno Toluen€ Xy€nes, Total Surr: 1,2-Dichlorobenzeno.d4 Surr: Dibromofluoromothane Su rr: p-B romofluorobonzene Sur: Toluen+d8 Sample lD: C08030583.009EMS Benzgno Carbon tetrachlorido Chloroform m+p-Xylenes o-Xylene Toluene Xylenes, Total Laboratory Control Samplo 5.1 ug/L 5.0 ug/L 4.5 ug/L 4.7 ug/L l0 ug/L 45 ug/L 1.7 uS/L 4.2 ug/L 5.0 ug/L 4.S ug/L 15 ug/L Method Blank ND UgIL ND ug/L NO ug/t ND ug/L ND uglL ND ug/L ND ug/L ND uglL ND uglL ND UdL NO ug/L S6mple Matrix Spike 980 ug/L 1000 ug/L 1000 ug/L 1000 ug/L 1100 ugiL 990 ug/L 2100 ug/L Run: GCMS2_080317A r02 99 90 94 100 90 94 E5 oo 98 100 98 9l 98 100 100 92 s9 98 50 98 50 102 50 r00 50 101 50 106 50 99 50 r04 Run: GCtllS2-080317A Batch: R98226 03/17108 11:13 03/'17i08 13:10 03/17/08 22:19 r.0 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 I-0 r.0 1.0 1.0 1.0 1.0 0,5 0.5 0.5 0.5 0.5 0.5 0.5 0,5 0.5 0.5 0.5 70 70 70 70 70 70 70 70 70 70 70 80 70 80 80 70 70 70 70 70 7A 70 130 130 130 '130 130 130 130 r30 130 130 130 120 r30 130 120 80 7a 80 80 120 130 120 120 Run; GCMS2-0803,7,A 130 130 ,30 130 130 130 130 Oualifiers: RL - Analyte .eporting limit.ND - Not detocted at the reporting limit. I ENERGY LAAORATORIES, Ne. . 2393 Safi Creek Hghway (82601) , PO. 9ox 3258 . Casper, WY 82602 ToltFree888.235.0515 , 302235.0515 . Fax 307.?34.1639 ,casper@energylab,com-www,enerytab.con T t QA/QC Summary Report Glient Denison Mines (USA) Corp Projcct 1st Quarter Groundwater 20OB Report Date: 0al10/08 Work Order: C08030583 [i*',,"Rcsult Unlts RL %REC Low Llmlt Hlgh Llmlt RPD RPDLlmit Oual i I I I t T I It li I I iI iI ! I Mothod:sw8260B Sample lD: C0803058t{r0gEMS Surr: 1,2-Dichlorobenzened4 Surr: Drbromoiuo/omethane Surr: p-Bromofluorobcnzene Surr: Toluene-dB Sample l0: C08030583409EMSD Benzene Carbon tetrachlodde Chloroform m+p-Xy'lene6 o-Xylene Toluene Xylenes, Total Su rr: 1,2-Dichlorobenzen6-d4 Surr: Dibromofluoromethano Surr: p€romofluorobenzens Surr: Toluene-dB Sample Matrix Spike Sample Matrlx Spike Buplicate 980 ugil 1000 ug/L 960 ug/L 970 ug/L 1000 ug/L S50 ug/L 2000 ug/L Run: GqMS2-080317AB0 t2o 70 13080 t20 Run: GCMS2 080317A 1.0 1.0 1.0 r.0 50 50 50 50 50 50 50 1.0 1.0 '1.0 1,0 12080 104 102 105 ss Batch: R98226 03t17to$22'.19 03/17108 22:58 20 20 20 20 20 ?o 20 10 10 10 10 98 102 s6 97 r00 g5 96 104 100 102 99 70 70 70 70 70 70 70 80 70 80 80 130 130 130 130 130 130 130 120 130 120 120 0.4 0.4 3.7 4.0 6.6 4.5 5.3 0.0 0.0 0.0 0.0 t I i I I I : I Qualifiers: RL - Analyte reporting limil.ND - Not delected al th€ reporting limit. ooo{L oI.E')'6.olg rB lL,8,o.ol.o 'Lrc,, lo_El-o'o.a(l, Eooo Lo ot td6'6 taoo-ooco o Eo l,g of Eooop oo F2 Eo. IrJo UI A HH '15Looou {rlao =ETotr -IEo, *. 1 -aG,g EItr1oi >:ittloi*r'ai =.{(Ji 'l (o! .=E(E!t.ciol Ii ii I I I T i t i I I I iI II I N U ;{ fA Ed" H0iz s S,tO= g4scH,*' !rttr ;Eel sfg=l -EEEI J.1EE{l tr ig[lE ,tr^* EEE15 Y aL6 (IVl) punojsurillHSnU {$ NN h$\0 b*s ,ENE:A r.r reqlo {esssotEJ Xuogeatuntp1osFlo$Je1emJly F O I A S,VtV:sd,q epujes k ( E rh 8t-sX,bN/? ,BI.E'oirEeEE cl6!.clt o4AJ =6utE-,sLl*tscL (\he<t!(s AE &Ea co'E 6' _B,e o It ilEIeIg [$tl c:l dal r, anilf Eil*.;'lE* p li $EI O-lE lr OlIE.! E ilE EE llE i$["" 3 o IegEla,LOI o -:r= l€# El*i s IEE EIE: EISHE ISEE li,^x .EloJ.1=IE'.E lgt E i*-g€'EE tr EgEtrs s aEF E$H:;Eotr >tu - =oeEE TE ;HEo,9. utisrE} ;=2=E.eE>E € Eg Energy Laboratories lnc Workorder Recei pt Checklist Denison Mines (USA) Corp Login completed by: Kimberly Humiston Reviewed by: Reviewed Date: Shipping containelicoo16r in good condition? Curtody seale intact on shlpping container/cooler? Custody seals intact on sample botfles? Chain of custody present? Chain of custody signod whon relinquished and receiued? Chaln of custody agro€s with eample labels? Samples ln propor conteiner/bottle? Sample containers intact? Sultcient 3ample volum€ for lndlcatod tesl? AII samples received within hotding time? Containe/TBmp Blank temperature ln compllance? Water - VOA vials have zero headspace? Water. pH accsplable upon recelpt? Contact and Corrective Action Comments: None n I I I I T t t I I T T T T I I I T I I ves fi Yes [l Yes I Yes [l Yes @ Yes fl Yes @ Yes fl Yes Bl Yes BJ Yes fl Yes fl Yes [J lffitililttililtilililtil lIililililriltIil c08030583 Date and Time Received: lt14t200g 9:28 AM Received by: jm Carrisr name; Next Day Air No fI NoE No fI NoD NoE NoE No fl NoD NOD NoD NOD Non No fI Not Pre3ent E Not Present I NotPreeent fl 4'C On lce No VOA vials submitted Not Applicable n t EilEEGY LABaFAT0RTEFT-11fiO- ._2390 sarr creek Highway (sz60r) . Ro. Box s2i0 , caspet, w 0p60ptofiFree888.235.05t5 . so7.235.osrs ; rai ibii,ii.iitSi' :iiiii6e,i;ilytrirlr,wt44,4enersrytdb.com I T I T I ANALYTICAL SUMMARY REPORT April29, 2008 Denison Mines (USA) Corp 8425 S Hwy 191 Blanding, UT 84511 ' Workorder No.: C08030921 lT1rrT_ 1 st Quarter Groundwater Energy Laboratoriss, lnc. recoived the following 16 samptes from Denison Mines (USA) Corp on atzllzoogfor anatysis. sample !D Gllent sample lD collect Date Receive Date Matrix Test c08030921.001 MW27 03117 108 1 a:40 03t21 t}B Aqueous lr I Metals by lcP/lcPMs, Dissolved Alkalinity OA Calculations Chloride Fluoride Nitrogen, Ammonia N,trogen, Nltrate + Nitrite pH Gross Alpha minus Rn222 and Uranium Solids, Total DissolvedI rl I I Sulfate 514182608 VOCs, Standard List c08030921-002 MW23 03/18/08 07:5'1 0U21/08 Aqueous Same As Above Aqueous Metals by lCp/lCpMS, Dissolved AA;;. r*"our;rroplrrs, oi"rorr"o Fluoride c08030921-003 MW 12 c08030921-004 MW 5 03/18/08 04:36 03/21l08 ffin$Ba 1t45 03t21t08 c08030921-005 MW 11 AA$rc8 fi:00 03l2tt01 Aqueous Melals by ICP4CPMS. Dissolved Alkalinity QA Calculations Chloride Fluoride Nitrogen, Ammonia Nitrogen, Nitrate + Nitrite PH Gross Alpha minus RnZ22 and Uranium Solids, Total Dissolved Sulfate SW8260B VOCs, Stsndard List ri I I II I T 6aoAA^^^.c08030921.006 MW25 43fi8n816:1i 03t21/Ob Aqueous SameAs Above c08030921-007 MW80 03/20/08 07:13 03i2.!/08 Aqueous Same As Above C08030921-008 MW70 m/18/08 16:1S O3/2,0S-' Aqueous SameAsAbove c08030921-009 t{\ry 75 03/19/OS tl:tt olrat}a -- Aqr"or. same As Above C08030921-010 MW 20 ffi/lgr'B 08:00 03/Z1OS -' nqr"ou. Same As Above C08030921411 MW gl m/19/OB 1Z:ZO 03t21tOB Aqr"o* Same As Above C08030921.012 MW 30 03/19r0g 10:10 03/Z1l0S --Aqueous -Sarne as aOove c0803092'-013 MW '' 03/19/08 1437 aazins iqueor* na"i"rr uvicp/lcpMs, Dissotved:---':-:.]:---C08030921-014 MW 3 o'/19/OB 15:30 03X21/0a nqruou;-S.r. o, Ab.,* I ENERGY LABOflATORIES, tltc '2393 Satt Creek ltlO^fway (5260t) . P.O. Box SZSE , Caspeti wy0e60zToltFree e80.235.aiff , J07.eg5.0iti , Fax eoz.zra.roii ]cispiitdeiihllaitin. www,energytab.com I c08030921-01s MW 14 03/1 9/08'17 :17 O3121 108 Metals by ICP/ICPMS, Dissolved Alkalinity QA Calculations Chloride Fluorlde Nitrogen, Ammonia Nitrogen, Nitrate + Nitrile pH Gross Alpha minus RnZ22 and Uranium Solids, Total Dissolved Sulfate SW8260B VOCs, Standard List C08030921-016 Trlp Elank 03/19/08 17:17 03121108 Aqueous Sr EZ60B VOCs, Standard List I As appropriate. any exceptions or problems with the analyses are noted in the Laboratory Analytlcal Report, theOA/QC Summary Report, or lhe Case Narrative. lf you have any questions regarding these tesls resutts, please call. ReportApproreaA@ SIEVE CARLSI0i't I I I t I t I ENEfrGY LABOFATORIES, tNC. '2390 gatt Creek Highway (5260t) . PO. Box JZSB . Caspec W1Z1OPTottFree808.235.05t5 . a0z.z3s.05ti . Fax s2z,zo4.t63s .bisperdenergyhi.'rom:m*li;iibiiir.-ii- t I t QA/QC Summary Report Cllent: Profect; Denison Mines (USA) Corp lst Quartsr Groundwater Report Date: 04/29/08 Work Order: C08030921 Analytg Mothod: A2320 B Sampte lD: ITIBLK.3 Alkalinlty, Total as CaCO3 Carbonate as CO3 Bicarbonate as HCO3 Sample lD: LCS-3 Alkalinity, Total as CaGO3 Sample lD: C08030913.003CtrtS Alkalinity, Total as CaCO3 Sample lD: C08030913.003CMSD Alkalinity, Iotal as CaCO3 Sample lD: C08030921.009AMS Alkalinity. Total as CaC03 Sample lD: C0803{r92t.o0SAMSD Atkalinity, Total as CaCO3 Resuat Un,ts Mettrod Blank ND mg/L ND mgiL ND mgL Laboratory Control Sample 5i10 mgtr Sample Matrix Splke 288 mg/L Sample Matrix Spike Dupticale 28S mg/L Sampte Matrix Spiks 499 mg/L Sample Matrix Spike Dupllcato 501 mg/L Run: MANTECH_0803248 Run: MANTECH_0803248 90 110 Run: MANTECH_0803248 90 110 Run: MANTECH_0803248 90 110 0.0 Run: MANTECH_0803248 90 110 Run: MANTECH_0803248 90 110 0.4 RL %REC Low Llm,lt H,gh L,ntt RPD RPDLImII QuaI t I I t, I I ti i li o.2 1 1 1.0 1.0 1.0 1.0 r.0 102 95 95 87 8S Batch: R98546 03/24lOB 21:02 03124/08 2l:09 03/24/08 21:24 0s/24l08 21:31 10 03124/08 22:5a S 03i24/08 23:00r0s 101 99 10 10 lr j lr I ri l ti I Ii li I li i li i Molhod: A25,46C SamplelD: ilBLKi_080320 Solids, Tolal Dissolved TDS @ 180 C Sample lD: LCS1_080326 Solids, Total Dissolved TDS @ tSo C Samplo lD: C08030913{04CMS Sotids, Tolal Dlssolved TDS @ 1S0 C Sample lD: G08030913404CMSD Solids, Tolal Dirsolved TDS @ 1S0 C Sample lD: G08030921{,0AMS Solids, Total Disso3ved TOS @ 180 C Sample lD: C08030921{ll0AMSD Solids. Total Dlssotued TDS @ 1eO C Method Blank ND mE/L Laboratory Control Sample 988 mgtL Sample Matrlx Spike 2150 mg/L Sample Matrix Spike Duplicats 2080 mg/L sarnpla Matrix Spjks 8670 mgL Sample Matrix Spike Duplicata 6690 mg/L Run: BAL-1_080326B Run: ML-l_0803268 90 tto Run; BAL-1_0803268 90 1r0 Run: BAL-'l_080326B s0 110 Run: BAL.1_0803268 90 110 Run: EAL-1_0803268 90 110 Batctr: 080326_1-SLDS-TDS-W 03126/08 16:30 03126/08 16:30 03x26r08 16:38 03t/26/08 16:38 3.2 10 0U26/08 18:58 0326/08 18:Sg0.3 r010102 Quallflerc: RL - Anelyto repofing timit. S - Spike recovary oulsldo o, sdvisory timits. ND - Not tletectod at the reporling limit. ENEEOY LABORATOREA NC. . 2393 Satt Creek Hlg^t:way (Se6Ot) . pO. Bax J1SS . Casper WAp60pTott Free 888.235.0st5 ' 30z23i.osti . Fax sl2ese irti :bise1ieieiidy;b.c;i . uryw.iieiiiaa.-coi- OA/QC Summary Report Client: Projoct: Oenison Mines (USA) Corp 1st Quarter Groundwaler Report Date: 04/29/08 Work Order: C08030921 Analyte Method: A2tOC Sample lO: MBLKl_080i31 Solids, Total Dissotued TDS @ 1BO C Samplc lD: LCSl_0803Si Solids, Total Dlssotved TDS @ 1s0 C Sample ID; C080309{9.{,1OBMS Solids, Total Dissolved TDS @ tB0 C Samplo lD: C080309{9.0'l 0BMSD Sollds, Total Dissotued TDS @ 180 C Rosult Unlts Mothod Elank ND mg/L Laboratory Control Samplo 969 mg/L Sample Matrix Spike 3200 mg/L Sample Matrix Spik6 Oupticate 3260 ms/L Run: BAL.1_0804018 Run: BAL-1_080401B 90 110 Run: ML.1_0804018 90 r10 Run: 8AL-1_08O40t9 90 110 Batch: 080331-'t_sLDs-TDs-w 03/31/06 18:18 03Elr08 18:,t8 03/31/08 1 8:58 04/01i08 00:00 2.4 'r0 RL %REC Low Llmlt Htgh Ltmtt -."-l RPo RPDLlmlt Qual I I 97 92 s7 10 98 101 102 101 0.4 t.0 102r.0 1.0 1,0 t I T I I I I lr I t, I li i T, l1 i : T t l. t t l. I l- lllethod: A45(trCl B Sample lD: MBLK9-080403A Chloride Sample lD: LCS35-080it03A Chloride sample tD: c0803092t-006AMs Chloride Sample lD, C08030921408AMSD Chloride sample tD: c08030921.015AMs Chloride Sample lD: C0803092i{lSAMSD Chloride Method BIank ND mg/L Laboratory Conlrol Samplo 3490 mg/L Sample Matrix Spike 67.6 mS/L Sample Matrix Spike Duplicate 68.0 mg/L Sample Matrix Spike 55.9 mg/L Sample Matrix Spike OuplicatE 55.5 mg/L Run: TITMTION_0804038 Run: TITRATION_0804038 90 1r0 Run: TITRATION_0804038 90 1'0 Run: TITRATION_0804038 90 110 Run: TITRATION_0804038 90 110 Run: TITRATION_0804038 90 r10 Batch : 080403A-cL-TTR-W 04/03/08 10:39 04/03i08 12:48 04/03/08 13:19 04/03i08 13:200.5 10 O4103108 15:11 0a/03/08 1 5:1 l0.6 10 RL - Ana,yt6 reporting limlt.ND - Not detected at the reporting limit. ENEf,GY LAaoRAToEtE_s,^tNc . p393 san creek Hrigjway (sz60r) . po. Box 3zi8 . casper, wyaz60prottFree880.235.05ts ' 307.i3s.osn : Fai-sbi,iii.ioli :biiii6eiiilyhlirin.wwwenersytab.com QA/QC Summary Report Client: Denison Mines (USA) Corp Prol'ect 1 st Quarter Groundwater Report Date: 04f29/08 Work Order: C08030921 I I I t I T li T I Ii I ll Ir Analyto Method: Sample lD: Flugrido Samplo lO: Fluoride Sample lD: Fluoride Sample lD: Fluoride Sampla JD: Fluorkjo Sample lO: Fluoride A4500-F C M8LK.I LCS.l c0803091$00tcMs c08030916{0lctl/tsD c08030921.01.tAMS c0803092t.01 tAMsD Result Unlls Method Blank NO mg/L Laboratory Control Sample 1.04 mg/t Sample Malrix Spike l.4O mgtL Sample Malrix Spiks Dupticate 1.43 mgil Sample Makix Spike 1,94 mg/L Sample Matrlx Spike Dupticato 1.94 mg/L Run: MANTECH_0E0324A Run: MANTECH_080324A 90 110 Run: MANTECH_080324A 90 1.10 Run: MANTECH_080324A 90 1r0 21 Run: MANTECH-080324Ag0 110 Run: MANTECH_080324A 90 110 0,0 RL %REC Low Ltmtr Htgh Ltmtt RPD RPDLimIt QuaI 0.05 0.10 0.10 0.10 0.10 0. 10 102 r04 104 Batch: R98512 03124/08 09:52 03/24108 09:54 03124/08 l2:01 03/24108 1 2:04 ,0 03/24108 12:46 0324/00 12:a8 10 102 Method: Sample lD: pH Ail500-l{ B rcvl_080326_1 lnitial Calib ration Verification Standard7.00 s.u. Ana,ylical Bun: OR|ON555A_000326A 03/26/08 16:55 0.010 t02 10298 Method: Sample lO: pH 44500.H B c0003092t.01 0ADUP Sample Duplicato 7.41 s.u.0.010 Batch: 080326_1_PH-W Run: OR|ON555A_080326A 03/26i08 .t7:19 0.7 10 T I l1 i li t i T I I RL - Analyte reportlng limlt.ND - Not doteded at the rsporling lirnit. ENE&GY UBOFATORIE-5,-|NA '2393 Satt Creek Highway (82N1) . PO. Box S2S8 , Caspet ywa260atotl Free 888.235.0515 - 30zi35.osrs-: -rai ebiiii ioSb : dfiiiaeiihyhtrrl, , wwwenersytab.am QA/QC Summary Report Client: Oenison Mines (USA) Corp Profecfi 1sl Quarter Groundwater Report Date: 04/29108 Work OrdEr: C08030921 I I t I I I l' I Ti I t; ] I Ti i Ir i I Je*rrt" Mothod: A4500-NH3 G Sample lD: MBLK-1 Nikogen, Ammonia as N Sample lD: LCS-Z Nitrogen, Ammonia as N Sample lD: C08030921{07DMS Nit.ogen, Ammonia as N Samplo lD: C080309Z1.007DMSo Nitrogon, Ammonia as N sample lD: c0E030949{,04EMs Nrtrogen, Ammonia es N Sample lD: C08030949.,004EMS0 Nitrogen, Ammonia as N R€sult Units Msthod Btank ND mg/L Laboratory Control Sample 20.2 mgtL Sample Marrix Spike Sample Matrix Splke Duplicate1.98 mg/L Sample Matrlx Spike 2.9O mgrL Samplo Matrix Spike Duplicate 2,93 mg/t 0.02 Run: TECHNICON_080326A Run: TECHNICON_080326A 80 120 Run: TECHNICON_080326A 80 120 Ruo: TECHNICON_080326A 80 r20 0.5 Run: TECHNIGON_080326A 80 120 Run: TECHNICON_080326A 0.20 107 109 r01 99 g9 80 120 r.0 RL %REC Low Ltmit HlOh Ltmit RPD RPDLImit QuaI 0,050 0.050 0.050 0.0s0 Batch: R98643 03ti26l09 1O:21 03/26/08 1 0:23 03/26/08 11:07 03/26r'08 11:09 20 0U26i0E 11:39 03/26/08 11.4'l 20 llitetfiod: A4500nSO4 E $amplelD: LCS-I_0B03Jt Sulfate Sample tD: MaLK-1_oo03l1 Sultat6 Sample lD: C08030913-002CMS Sullete sample to: c08030s13-002cMso Sulfate Sample lD: C0803{I921{0BAMS Sulfate Sample lO: C0803o92t-{,08AMSD Sulfate Sample lD: C08030933{41FMS Sulfate Sample lD: C080J093A-04tFMSO Sulfate Laboratory Control Sample 4980 mg/L Method Blank ND mg/L Sample Matrix Spike 403 mgiL Samplo Matrix Spike Duplicats 400 rhg/L SamplB Matrix Spike 3710 mg/L Samplo Malrir Sp,ke Duplicate 3790 hg/L Sample Matrix Spik6 3330 mg/L Sample Metrix Spike Duplicat6 3290 mDlL Run: TURB.2_080331A104 90 110 Run: TURB-2_08033rA 102 Run: TURB.2_060331A 90 110 Run: TURB.2-080331A 90 r1o Run: TURB-2_08033rA 90 110 Run: TURB-2-080331A 90 110 Run: TURB-2_080331A 90 110 Run: TURB-2_080331A 90 110 Batch: 08033 1 -t_SO4.TURB.W 03/3.tr0B 09:46 03/31/08 09:48 03/31i08 l0:44 03/31/08 10:45 10 03131/08 12:20 03/31J08 l2:22 t0 03/3rl08 13 '5 03/3'l/08 l3:16 10 59 0.6 5.9 1.0 100 s8 2.1 1.2 106 r08 '104 59 59 59 Qualifiers: RL - Aaa,yte ,eporling timit.ND ' Not detectad at the reporting limil. _ENE_RGY LAEOfrAfOfrtE_O NA . pig? 6att Creetr Hlg_Qway @zOot) , p.O. Box J258 . Casper, Wy Bp60zTo//Free88tt235.05t5 ' 307,235.0515 ' Fax aoi.is.roii :ri{iidrie6}Eli.'in.www.eiersytao.coi- QA/QC Summary Report Client: ProJect: Denison Mines (USA) Corp 'lst Ouarter Groundwater Report Date: M,29/08 Work Order: C08030S21 RL ToREC Low Llmlt Hlgh L,mtt RPD RPDLITnII QuaI Method: Sarhplo lD: Silver Sample lD: Silver Sample lD: Silver Sample lD: Silver E200.7 LCS.I E1 t4 c080309s4-001F c08030994-001F MB-18t14 Run: SUB-B108994 85 115 Run: SUB.B'108994 70 130 Run: SUB.BI08994 70 130 Run: SUB.B'108994 Batch: B-R108994 04109/08 18:06 04/09/06 18:18 0a/09108 18:22 20 04/09/08 l8:02 Laboratory Control Sample 0.176 mg/L Samplo Matrix Spike 0. ,84 mg/L Sample Matrix Spike Ouplicato AiA rng/L Method Blank ND mg/L 0.0050 0.0050 0.0050 0.003 88 0.0 104 89 89 I I t I t lj I I IIli I I I Ii ll Ir I li l; lr Ii t; li I Method: Sampls lD: Manganese Sample lD: Manganesa Sample lD: Manganese Samplo lD: Manganeso E200,7 MB.{'80328A LF8-080328A c08030921-0t0BMS2 c0803092t.01 0BMS02 Run: ICP2-C_080328A Run: ICP2-C-080328A 85 t25 Run: |CP2-C_080328A70 130 Run: |CP2-C_080328A70 130 Barch: R98824 03/28/06 I 2:17 03128/08 12:21 03il28/08 16:28 03/28/08 1B:31 20 Method Blank ND mg/L 0.0003 Laboratory Fortified Blank 1,04 mgtL 0 010 Samplo Matrlx Spike 9.35 mg/L 0.010 Sample Matrix Spike Duplicate 9.38 mg/L 0.010 Itlethod: Ssmpl€ lD: Calcium Magnesium Silver Sodlum Samplo lD: Calcium MaEneslum Silver Sodium e200.7 M8.040401A LFB48O4O'A Method Blank ND mgtL ND mg/L ND mg/L NO mg/L Laboratory Fortifled Blank49.0 mdL 47.9 mg/L 1.04 mg/L 47.6 mg/L Run: lCP2.C_0E0401A Run: lCP2-C_080401A 98 85 125 96 E5 125104 85 12595 85 125 Batch: R98977 04/01108 13:57 01/01i08 14:00 0.1 0.04 0.006 0.8 0.50 0.50 0.010 o.77 Qualifiers: RL - Analyle reporling timit,ND - Not detectcd at the roporting limil I ENEfrGY LAEoRAroilEjS!-tllc. . zlga sa/t creek Highway (E2N!) . po. Box Jpsd . caspeti wy gzffi2tott Frce 88d.235.051i , snzpts.osti , Fai s1r.isi. iol:i :'ciipiideiiisyia:ic;n . wwwenersytab.com I I QA/QC Summary Report Cllent: Denison Mines (USA) Corp Project 1st Quarter Groundwater Report Date: 04/29/08 Work Order: C08030921 T I I RL %REC Low Llmtt Htgh Ltmlt RPD RPDLlmlt Ii Mathod: 8200.7 Sampte lD: MB-080411A Calcium Magnesium Potasslum Sodium Sample lD: LFB-080,111A Calcium Magnesium Potassium Sodium Samplo lD: C080{0269{0iCMS2 Calcium Magnesium Polassium Sodlurn Samplo lD: G08(X0269-001Cil[3D2 Calcium Magn6sium Potasslum Sodium Method Blank ND mg/L ND mg/L ND mg/L ND mg/L Laboratory Forlified Blank 48.8 mg/L 46.9 mg/L 45 5 mgil 47,1 mg/L Sampte Matrlx Spike 120 mdl 66 mgiL46 mSiL 60 mg/L Sample Matrix Spike Dupllcato 120 mgiL 67 mg/L 47 mg/L 60 mo/L Run: lCPl4_080411A 0.04 0.04 0-08 0.06 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 98 96 91 94 80 87 87 88 82 88 88 8S 0-6 0.8 1.3 1.4 Run: lCPl{_0804.l1A 85 125 85 tz1 85 125 65 125 Run: lCPl.C_0EMllA 70 130 70 130 70 130 70 130 Run; lCPl-C_080411A 70 130 70 't30 70 130 70 130 Bstch: R99540 Onfi 1/08 09:38 04/1 U08 09:42 04/11/08 13:36 04/11/08 13:a'l 20 20 20 20 t I I I I I T: I i T I T iI I I It Qualifiers: RL - Analyte repoding limit.ND - Not detected at the reporting limit. T ENEnoY LABofrAroilEa wc. . z0gg san creek Hlglway (sz@t) . po. Box Jpss . caspeti yw az60pTolt Free 808.ps5.051s . i1z.iss.osrs : iai sbi.iii.iois :rispiicirii6yEtc-;, . www.enersytab.com T t QA/QC Summary Report CliEnt Denison Mines (USA) Corp Prol'ect 1st Ouarter Groundwater Repod Date: 04/29/08 Work Order: C08030921IAnalyte Method:E200.8 Result Unlts RL %REC Low L,mlr Htsh Ltmlt RPD RPDLITnJI QuaI T Run: ICPMS2-C_080423A Run: ICPMS2€_080423A 85 115 Batch: R100078 04/2308'12:56 04/23/08 13:03 I ll Sample lD: LRB Ars6nic Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Mercury Molybdenum Nichel Selenium Sllver Thalium Tin U,anium Vanadium Zinc Samplo lD: LFB Arsenic Beryltium cadmium Chromium Cobalt Copper Lead Manganese M€rcury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadlum Zinc Method Blank 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 ngtL ND mg/L ND mgtL 0,0005 mg/L ND mg/L NO rng/L 6E-05 mg/L ND mg/L 5E-05 mg,L 0.001 mg4_ Labo,atory Fortified Blank 0.0518 mg/L 0.0514 mg/L 0.0517 mg/L 0.0524 mg/L 0.0528 mS/L 0.0567 mg/L 0.0522 mg/L 0.0528 mg/L 0.00523 mg/L 0.0517 mg/L 0.0529 mg/L 0.0522 mgll 0.0204 mgrL 0.0519 mglL 0.0514 mg,L 0.0517 mgtr 0.0526 mgt 0.0534 mg/L 6E.05 3E-05 I E.05 4E45 2E-05 7E{5 3E.05 5E{5 6E 05 5E-05 0.0007 0.0002 3E,05 te-05 6E{5 1E.05 3E-05 0.0003 0.0010 104 0.0010 103 0.0010 103 0.0010 105 0.00,10 106 0.0010 t 1 30,0010 104 0.0010 106 0.0010 104 0.001 0 103 0.0010 106 0.0010 103 0.0010 102 0.0010 104 0.0010 103 0,00030 103 0.0010 105 0.0010 104 ll li I I r li I! I i Tj 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 1''5 115 1t5 't 15 115 113 r15 115 r15 1t5 1r5 115 1r5 115 't t5 115 115 Qualifiers: RL. Anelyle reportlng limit.ND - Not datocted at ths repodlng lilhit. t ENEPGY LAEoEAToEtEq !Nc. . z39J satt Greek Hlqrway (az60t) , po. Eox i2s8 , caspor wy az60e7o/t Free 888.235.0sts , eoz.iss.otp , ni eoi.ist.ioi'i';biliii6rii6yiaiici,* . wwwenergytab.comI I QA/QC Summary Report Clionu Denison Mines (USA) Corp ProJect 1sl Ouaner Groundwater Report Dato: 04129/08 Work Order: C08030921IAnalyto Mothod: E200,8 Sample lD: C080.O228-001BMS Arsenlc Beryllium cadmium Chromium Cobalt Copper Lead ManganesB Mercury MolyMenum Nic,(el Selsnium Silver Thallium Tin Utanium Vanadium Zinc Sample lD: C080,|0278401BMSD ArsBnic Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Mercury Molybdenum Nickel Selenlum Silver Thallium Tin Uranium Vanadium Zinc Result Unlts RL %REC Lowllrnlt HlghL,mtt RPD RPDLlmtt Ouat l Batch: Rt00078 04123/08 l6:14I Il I I Sample Matrix Spike 0.0522 mg/L 0.0493 mg/L 0.0519 mg/L 0.0518 mgtL 0.0500 mg/L 0.0482 mg/L 0.0500 mgrL 0.0558 mg/L 0.00506 mg/[ 0.0513 mg/L 0.0492 mg/L 0.0503 mg/L 0.0122 mg/L 0.0500 mg/L 0.0508 rng/L 0.0518 mgrL 0.0525 ms/L 0.0514 mEL Sarnple Makix Spiks Duplicats 0.0501 mg/t- 0.0{77 mgrL 0.0503 mgtr 0.0502 rtgtL 0.0493 mgrl- 0.0464 mgrL 0.0487 ms/t- 0.0541 mg/L 0.00502 mg/L 0.0495 mg/L 0.0475 mg/L 0.0487 mg/L 0.0100 mS/L 0.0489 mg/L 0,0492 mg/L 0.0500 mg/L 0.0513 mgiL 0.0495 mg/L 0.0010 1040.0't0 99 0.010 1040.050 102 0.010 1000.010 950.050 100 0.010 103 0.0010 ,o10.10 1020.0s0 96 0.0010 1010.010 610.10 1000.10 102 0.00030 '104 0.10 1020.010 100 0.0010 1000.010 950.010 1000.050 990.010 980.0,to 920.050 s7 0.010 1000.00ro ,000.10 990.050 s20.0010 970.010 50o.10 98 0.10 98 0.00030 1000.10 1000.010 96 Run: ICPMS2€-0804234 70 130 70 130 70 13070 130 70 13070 130 70 130 70 130 70 13070 130 70 130 70 13070 13070 t3070 130 70 130 70 t30 70 130 Run: I CPlils2C_080423A 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 t30 70 130 70 t30 70 130 70 t30 70 13070 t30 70 130 70 l30 70 130 I1 J I l; I T i : T t l: i T II iI 4.2 3.3 3.1 3.2 1.6 3.8 0.0 3.0 0.7 0.0 0.0 20 0.0 0.0 3.5 0.0 3.8 O4/23/08 16:21 20 2A 20 20 20 20 20 20 20 20 20 20 20s 20 20 20 20 20 Quallflers: RL - Analyto reporling timit, S - Spike recovery outsidB of advisory tirnjls ND - Not detect€d at the reporting lilnit. t ENEEGY LAgoFAroREs, tMc. . ze$ 6att creek Hig^lway (sz60t) . p.o. Box SEIE . caspe7 wy sp60eTal Free 888.2e50515 . 307.is5.uts ; iax aoi,iat. ia1s .',c;;i;;de;;,syt i;ci;n . www.energytab.com I I QA/QG Summary Report Client Denison Mlnes (USA) Corp ProJect lst Quarter Groundwater Repoft Date: 04/29/08 Work Order: C08030921IAmlyte Metlrod: E200.8 sample tD: c0803092l.otsBMs Arsenic Berylium cadmium Chromfum cobatt Coppor Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thailium Tin uranium Vanadium Zinc Sample lO: c08030921.oISBMSD Arsenic Beryllium Cedmium Chromium Cobatt coPPer Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranlum Vanadium Zinc Result Unlts RL %REC Lowltmtt Hlshllmtt ^t, ^;;;,;;;l Batch: R100078 04/23/08 18:59I T I I Sample Matrix Spike 0,0522 mg/L 0.c/'22 mS/L 0.0488 mg,L 0.0507 mgtL 0,0526 mgrl 0.0474 mg/L 0.0503 mg/L 2.40 mg/L 0,00497 nrS/[ 0 0582 mg/L 0,0538 mg/L 0,0495 mg/t 0.00970 mg/L 0.4371 mg/L 0.0479 mg/L 0.122 mg/L 0.0524 mg/L 0,0574 mdL Sample Makix Spike Duplicate 0.0509 mg/L 0.0401 mS/L 0.0478 mg/L 0.0497 l,,,EtL 0.0513 mEiL 0.0461 mg/L 0.0489 mg/L 2.36 mg/L 0.00491 taglL 0.0577 mg/L 0.0524 mg4_ 0,0{74 mdL 0.00E90 mg/L 0.0376 rnglL 0.0480 mg/L 0.1 1 6 mg/L 0.0517 mgrL 0.0566 mg/L 103 84 96 100 98 g0 100 99 107 91 95 4E 74 s6 'l't2 104 86 0,0010 r0r 70 r300.00't0 80 70 1300.00t0 94 70 1300.0010 98 70 1300.0010 95 70 1300.0010 87 70 1300.0010 98 70 1300.0010 70 1300.0010 98 70 1300.0010 105 70 1300.0010 88 70 1300.0010 91 70 1300.0010 44 70 1300.0010 75 70 1300.0010 96 70 130 0.00030 100 70 t3o0.0010 102 70 1300.0010 84 70 .t 30 Run: ICPM52€_080423A 70 130 70 130 70 ,30 70 130 70 130 70 ,t 30 70 130 70 t3070 130 70 130 70 130 7A 130 70 130 70 13070 13070 1307A 130 70 130 Run: ICPMS2-C_080423A 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.00,0 0.00r0 0 0010 0.0010 0.0010 o.0010 0.0010 0.00030 0.0010 0.00t0 04/2U08 19,06 I ri l1 i l li t ll I li I Ti 2.5 4.9 2.1 2.2 2.5 2.6 2.7 't.8 1.2 1.0 2.7 4.2 8.6 1.4 0.3 1.8 1.3 1.4 20 20 20 20 20 20 20 20 20 20 20 2A 20 20 20 20 20 20 RL - Analyte roportlng limil_ ND . Nqt detected at the repo,ting limit. A - Tho enalyt€ lovol wss greater than four timos the spike levet. ln accordancs with the melhod % recovery iE not calculaiect. S - Spike racov€ry outside of advisory limlts. I FNq86y LASORATOBES, tilC. . zJsS sat Cree*b//Free88d.Zai,05ts , Jo7.2a5,05rc : rax sbi.iii"se! sqlt-Qrggf HtQhway (se60t) . p.e Box 1ZSB . Caspet; Wy Ozffiz, Fax 302234.1699 . casper@eneryylab.con . www.l.iSiigyho.li;i-7o// Free 888.235,0515 , JOZ t I QA/QC Summary Report Clionfi Denison Mines (USA) Corp Prolect 1st Quarter Groundwater Report Dats: 04129/08 Work Ordor: C08030921IAnalyteResultUnltsRL o/oREC Low Llmit Htgh Llmlt RPD RPDLImII QuaI I I llllethod: E200.8 Sample lD: LRB Arsanic Beryllium Cadmium Chromium Cobah Copper Lead Mercury Motybdenum Nickel Seleflium Silver Thallium Ur€nium Vanadlum Zrnc Sample lD: LFB Arsenic Beryllium Cadmium Chromlum Cobalt Copper Lead Mercury Molybdenum Nrckel Selenium Silver Thanium Uanium Vanadium Zine Sample lO; C080,t1035{02BMS Arsenlc Cadmium Chromium Coball Method Blank ND mg/LNO mg/L ND mg/L 4E-05 mg/L ND mg/L N0 mglL ND mg/L 9E-05 nl{'tL ND mg/L ND mg/L 0.000s mgA ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L Laboratory Fortinod Btank 0.0532 mg/L 0.0515 mgA 0.0530 mgr[ 0.0529 mg/L 0.0529 mdL 0.0529 mg/L 0-0532 mgIL 0.00541 mgA 0.0539 mgiL 0.0529 mg/L 0.0534 mgrl 0.0217 ngtL 0.0532 mg/L 0.0534 mg/L 0.0532 mg/L 0.0532 mg/L Sample Matrix spik6 0.506 mgiL 0.483 mg/L 0.553 mdL 0.507 mg/L 6E-05 3E-05 1EOs 4E-05 2E-05 78.05 3E-05 8E-05 5E-05 0.0007 0.0002 3E-05 1E-05 1E.os 3E-05 0.0003 0.0010 106 0.0010 r03 0.0010 106 0.0010 106 0.0010 106 0.0010 106 0.0010 1060.00t0 106 0.0010 10a 0.0010 106 0.0010 106 0.0010 108 0.0010 106 0.00030 107 0.0010 106 0.0010 106 0.00?0 10,0.0010 So 0.o0r 0 105 0.0010 101 Run: ICPMS2-C_080424A 85 11585 1r5 85 115 85 115 85 11585 ,15 85 1 .15 85 115 85 115 65 r15 85 115 Run: ICPMS2-C_080424A Batctr: Rl00103 44fi14108 l2:O7 04/24108 1 2:1 3 un4,,08 17'11 I I li I T; l: ] iI I Ti i I' 85 85 '115 115 65 115 E5 115 85 115 Run: ICPMS2-C_080424A 7A 130 70 130 70 130 70 130 Quallliers: RL - Analyte reporting limit.ND . Not detected at tho reporting limit. I ENERGY LAEOBATOPIE_$ING . zJgJ satt creek Highway (826i0t) . p.o, Box s2s8 . casper w 0p602lolt Free 880.235.0515 ' 302295.05ts , Fax 302$t t53e :ciiiiideiircykbbii . www.iiiibiao.-coi- I I QA/QC Summary Report Client: Denison Mines (USA) Corp Prolect 1st Quarter Groundwater Report Date: 04t29/08 Work Order: C08030921t I li I Rosult Unlts RL %REC Low Llmtt Hlgh Llmtt *ro *ro.,rn ; -l l, Method: E200.8 Sample ]D: C08011035{t02BIriS Copper Lead Molybdenum Nickel Silver Thaltium Uranium Vanadium 2inc Sample lD: C080dl03I.002BMSO Arsenic Cadmium Chromium Cobalt Copper Lead MolyMenum Niokel Silver Thallium Uranlum Vanadium Zinc Sample Matrix Spike 0.545 mdL 0.51 1 mg/L 0.746 mg,L 0-484 mgll 0.105 mgiL 0-504 mglL 0,499 mg/L 0.53t mgtL 0.665 mdL Sample Matrix Spike Duplicate 0.536 mg/L 0.516 mS/L 0.563 mgft 0.536 ',i.gtL0.577 mg/L 0.533 mglL 0.739 mg/L 0.517 mg/L 0.131 mE/L 0.528 mg/L 0.525 rng/L 0.551 mg/L 0.672 mg/L 0.0015 98 0.0010 102 0.0010 10s0.00t0 960.0010 52 0.0010 r01 0,00032 99 0.00t0 105 0.0032 94 0.0010 107 0.0010 {03 0.0010 107 0.0010 107 0,0015 105 0.00t0 106 0.0010 107 0.0010 102 0.0010 66 0.0010 108 0.00032 1M 0.0010 r 0g0.0032 s6 Run: ICPMS2€_080424A70 130m 130 70 13070 ,3070 13070 13070 13070 13070 130 Run: ICPMS2€-080424470 13070 ,3070 13070 r3070 13070 13070 130 70 13070 13070 13070 13070 13070 130 5.? 5.6 1.7 5.5 5.6 4.2 't.0 6.6 22 4.7 5.2 3.7 t.0 Batoh: R'|00103 04tZqN817:11 04121fi8 17:18 20 20 20 20 20 20 20 20 20 20 20 20 20 SR t i l, i li l; T i t; I Qualifiers: RL - Analyta reporting lirllit. R - RPD oxceeds advisory timil. ND - Not detecl€d at th6 reportlng timlt. S - Spike recoyory outsid€ of advisory limits I ENEnGy LAgaRATofltE_s,-tNe ._zag:g sal creek Hlqlway (se60t) , p.o. Box izsS , casper wy ae60arolt Free 888235.a56 ' 307.235.a1r5 . Fax ebi.i,ii ii1i':risiii6eii6)fiicim . wwwenersytab.um I I QA/QG Summary Report Client: Denison Mines (USA) Corp ProJect 1st Quarter Groundwater Report Date: 04/29/08 Work Order: C08030921IAnalyte Method:E200.8 Rs€ult Unlts RL %REC Low Llmtt Htgh Llmit RPD RPDLImIi QuaI t I Sample lD: LRB Arsenic Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Mercury Molybdenum Niokel SeloniuEt Silver Thallium Tin Uranium Vanadium 2inc Samplo lD: LFts Arsenic Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Mercury Molybdenum Nbkel Selenium $ilver fhallium Tin Uranium Vanadium Zinc Mehod Blank 8E.05 mg/L ND mgtL ND mgiL ND mg/L ND ms/L itO mg/L ND mg/L 8E{5 mSlL ND mg/L 0.000t0 mg/L ND mg/L ND mS/L 0.002 mg/L ND mgrL 7E-05 mg/L ND mEtr NO mdL ND mg/a Laboratory Fonified Blank 0.0510 rns/L 0.0501 mgrl- 0.05r0 mg/L 0.0525 mgft 0.0530 mg/L 0.0518 mg/L 0.0524 mg/L 0.0527 mg/L 0.00547 mg/L 0.0523 mg/t 0.0523 mq/L 0.0506 mgrl 0.0192 mS/L 0.0524 mgrl 0-0529 mg/L 0.0525 mg/L 0.052E mgA 0.0522 mg/L 6E.05 3E-05 1E-05 4E-05 2E-05 7E-05 3E45 5E-05 8E.05 5E-05 0.0007 0.0002 3E-05 1EO5 6E-05 1E-05 3E{5 0.0003 0.0010 102 0.0010 100 0.0010 102 0.0010 105 0.0010 106 0.0010 104 0,0010 ro5 0.0010 105 0.0010 109 0.0010 104 0.0010 105 0.0010 101 0.0010 85 0.0010 105 0,0010 106 0.00030 105 0.0010 106 0.0010 1c4 Run: ICPMS2€_080403A 85 115 85 115 85 115 85 115 65 115 85 ttsEs 1t5 85 t1585 ils 85 11585 115 85 115 85 115 85 11s 85 115 85 115 85 '115 85 115 Ruu ICPMS2-C_080403A Batch: R99175 04/03/08 I 3:1 0 04/03/08 I 3:1 7 ll I I li I T; Qualifiers: RL - Aralyte reporling limit ND. Not detected at ths reporting limit.li I lr iI T ENEnoY LAaoFAroRtEs, tNC. - zsgo sat creek Hig-lway (sp60l! , po. Box s?si . casper w a260prot ftee aea.zls.osts , soz.iss,lsts . Fax soi.fra.i65i :'cAipiid,riiisyh:icln , www.energytab.com I t QA/QC Summary Report Client Denison Mines {USA) Corp ProJect 1st Quarter Groundwater Report Date: 04/29/08 Work Order: C08030921IAnalyteResultUflatgRL %REC LowL,mIt HlghLirmtr RPD RPDLimlt Qual I I Balch: R99175 04/04/08 03:30IMethod: E200,0 Samplo lD: C08030912-009DMS4 Arsenic Beryllium Cadmium Chrqmlurn Cobalt Copper Lead Manganese Mercury Molybdenum Nickel Selenium Silvar Thallium Tin Uranium Vanadium Zinc Arsenlc Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Mercury Motybdenum Nickel Selanium Silver Thallium Tin Uranium Vanadium Zinc I li Post Digestion Spiko 0.0511 mg/L 0.0177 mg/L 0.0/74 mg/L 0.0176 mgtL 0.0473 mg/L 0.0484 mg/L 0.0512 mg/L 0,132 mgL 0.00509 rnStL 0.0508 mdl 0.0507 mg/L 0.051 1 mgiL 0.0126 mg/L 4.0514 mg/t 0.0495 mgtr 0.0810 mg/L 0.04S1 mgtL a.0457 mg/L 0,0527 mg/L 0.0500 mg/L 0.0481 mg/[ 0.0489 mgtL 0.0464 mgrL 0.0520 rng/L 0.0490 mgtr 0.132 mg/L 0.00513 mgtL 0-0551 mg/L 0.0584 mg/L 0.0s26 mgil 0.0133 mg/L 0.0501 mglL 0.0493 mg/L 0.0761 mg/L 0.0510 mg/L 0.049S mg,L 0.00t0 lot0.010 950.010 950.050 950.010 940.010 950.050 1020.010 94 0.0010 toz 0.10 't00 0.050 101 0.0010 1020.010 630.10 1030,'t0 9s 0.00030 t050.10 98 0.010 el 0.0010 1040.010 I000.010 s60.050 980.010 92 0.010 1020.050 980.010 94 0.0010 t 030.10 1080.050 117 0.00't0 1040.010 660.t0 .l00 0.10 99 0.00030 s60.10 1020.010 100 Run: ICPMS2-C_080403A 70 r30 70 130 7A 13070 130 70 130 70 130 70 130 70 130 70 130 70 13070 13070 130 70 130 70 130 70 130 70 .t30 70 130 70 130 Run: ICPMS2-C-080403A 70 t30 70 t30 70 .t30 70 130 70 130 70 130 70 130 70 130 70 t30 70 130 70 130 70 13070 13070 13070 13070 130 70 t30 70 130 04/04/08 03:57 20 ,n 20 z0 20 20 20 20 20 20 20 20 20 20 20 2A 20 20 I Sample lD: C0803091z{oSOiltSD4 post Oigestion Spike Dupticate 3.0 4.6 1.6 0.0 2.0 7.3 0.0 0.3 0.8 0.0 14 2.9 5.7 0.0 0.0 6.3 0.0 8.8 lr Ir I RL - Analyle reportlng limlt. S - Spiko recovery outsids of advisory limits ND - Not dEt8ct€d at the reporting limit. t EilERaY LASoEAroREs, lNc. . 2393 salt creek Highway Pe60t) . po. 1ox JZSS . caspec wy g2602 fofl Free 888.235.0515 , 302235.0515 . Fax 307.234.1639 ,-casper@eneryylab.com . wwwehergylab.mm I T QA/QC Summary Report Client: Oenison Mines (USA) Corp Prolect 1st Quarter Groundwaler Report Date: 04/29/08 Work Order: C08030921It--I Analyto I Result Unlts RL o/oREC Low Llmlt Hlgh Llmlt IRPD RPDLlmit Oual i i T T Method: E200.8 Sampla lD: C08030921{09BMS4 Arsenic Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Mercury Molybdenum Nickel Soleniurn Silver Thallium Tin Uranium Vanadlum Zinc Arsanio Beryllium Cadmium Chromlum Cobalt Copper Lead Manganese Mercury Molybdenum Niqkel Selenium Silver Thellium Tin Uranium Vanadlum zlnc Post Digestion Spike 0.107 mdt 0.0879 mg/L 0.0976 mgrL 0.0958 mg/L 0.100 mg/L 0.t05 mglL 0.103 mglL 4.50 mgtL 0.0104 mgtr 0120 mg/L 0.137 mg/L 0.112 mgrL 0.0243 mg/L 0.0712 mg/L 0.104 mg/L 0.217 mg/L 0.102 mg/L 0.107 mglL 0.105 mg/L 0.0865 mdL 0.0957 mgIL 0.0944 mdL 0.100 mgrt 0.101 mg/L 0.104 mg/L 4.51 mg/L 0.0106 rng/L 0.116 mglL 0.129 mg/L 0.108 mS/L 0.0248 mg/L 0-0810 mg/L 0.102 rngL 0.244 mg/L 0.100 mg/L 0.104 mg/L Run: ICPMS2€_0E0403A Batch: R99175 0410410806:ZG I I 0.0010 106 0.0r 0 880.010 e6 0.050 96 0.010 92 0.010 98 0.050 103 0.010 0.0010 1040.10 111 0.050 103 0.0010 1120.010 610.10 740,10 103 0.00030 r05 o.10 10, 0.010 94 0.0010 0.010 0.010 0.050 0.010 0.010 0.050 0,0,0 0.0010 0. r0 0,050 0.0010 0,010 0.10 o,10 0.00030 0.'10 0.010 Run: ICPMS2-C_08040SA 130 130 130 ,30 130 130 130 r30 130 130 r30 '130 130 130 t30 t30 130 r30 130 2.5 t30 1.6130 1 .9130 1.5 130 0.2130 4,0130 0.9 130 0.2130 2.2i30 3.1 130 5.4 130 39r30 2.2130 0.0 r 30 1.4130 2.6't30 2.3130 3.0 04/04/08 06:33 20 20 20 20 20 2A 20 20A 20 20 20 2020s 20 20 20 20 20 70 70 70 70 70 7A 70 70 70 70 70 70 70 70 70 70 70 70 It I I t; li I ll Sample lD: C08030921.0098MSD4 Po$t Digestion Spiko Dupticate 103 70 86 70 94 70 9.r 70 92 70 s4 70 104 70 70 106 70 107 70 s6 70 108 70 62 70 80 70 r02 70 t1t 70 99 70 91 70 ri li I T Qualifiers: RL . Ara,yte reporting Jimjt. ND - Not delecied at the roporting limit. A - The analyto level was greater than four times lhe spike level. tn accordance with the method lo tecovery is not calculated. S - Spike recov€ry outside of advlsory limits. I li iI l: M,,***.*,*".,,, **,,r _ A) corp QA/QC Summary Report r;filTl; :rrT:::r,lr llr I I iig::l'-;,,,:::;1rite as N Laboratorv€ont;::i"'' ,.io ,u *'n'rEcHNrcoN-'soB2'rA 03/2{/08 10:32 I I I ii:xl::i;,,.':::i'*',,ri:ff*s samprs,at'*=:]X:,. olo r0r Run:rEocHNrco*llr'o^ estz4te'lt:24 I lrrple lD: c0E03092't'006DMsD sample Malrix splke Dupricale Run: TEcHNlcoN_o8o324A 03t21lo| 11:27 I ffi,ffi;;"' "-,';i".-;:" ,:, 'l] *,,';,-,,"i;,,0o'u oll,o,o,,,,oo I ll ff#:::fi'.:::lt1i:i'llJt*' sam,reMatrixsflTLDupricare 0.10 sl Run:rEocHNrco*JlXorro^ ,., orz4to-lz:47 Irl I I; ffiil;-ffi **,;;-; 10 " *,n,";**,,J:^ 04,01,0813:,1 f - | Sample tD: C08030921{O2CMS Sample Marrix Spike Run: G5000W_0E0SZ6A 04t01t08 1t:11I I Gross Atpha mhus Rn & U 19.7 pCi/L 1,0 et 70 130III f -l :"J:,;,f;;,:r,:r#Tilr"*=o samprer'ratrixspikeDupricate r.o n, *un'G;:o0w_oE032sA 16 ,04/01ff813:r1 - r!II'r-lI-)rrtI IIII:rr,II If.III qr",H"o, ' I".taf f lt:lli'{q reportins llmil' D - Not derec,ted at the roporting timit. I f U - Not dstected at minimum detectabte concentration IIlliIIIlr - I ENERGT LABoRAfoEIE-s,-lNc '.2399 satt Creek Highway (82601) , Po. 1ox JEis . Caspeti Wyaz60zTo// Frec 888.235.0515 ' 307.i35osts-'-iax iloi.iii.iosg , casper@energytab.mm . wwwenergytab.comI I QA/QG Summary Report Glienil Denison Mines {USA) Corp Project 1st Quarter Groundwaler Report Date: 0429/08 Work Orden C08030921II nnatyro Result Unlts RL %REC Low Llmtt Htgh Llmtt RPD RPDLlmit euat i t Itiethod: SWBZ60B SampletO: 24-Mar.0B_LCS_3 Benzene Carbo6 tetrachloride Chloroform Chloromethane m+p-Xylenes Melhyl ethyl ketone Methylenc chlorlde Naphtha,ene o-Xylene Toluene Xylsn6s, Tolal SurL- 1,2-Oichlorobenzene.d4 Surr: Dibromonuoromethane Surr: p.Bromofl uorobenzene Surr: Toluene-d6 Sample lDz 24-Mar-08_tUBLK-6 Benzene Carbon letrachloride Chloroform Chloromelhsn€ 16+p-Xylenes Methyl othyt ketone Methylene chloride NaphthalonB o-Xylene Toluene Xylenes, Total Surr: 1,2-Dichlorobenzen044 Su n: Dibromofluororirethane Surr p-BromofluorobEnzena Sur: Toluene-d8 Sample lD: CoEo3O9?!40BEMS Benzene Carbon tetr8chloride Chloroform rn+p-Xylenes o-Xylene Toluene Laboratory Control Sample5.6 ug/L 5.6 ug/L 5.2 ug/L 5.3 ug/L t0 uyL 46 vgtL5.4 ug/L 4.0 uglL 5.2 ug/L 5.4 ug/L16 ug/L Mathod Elank ND ug/L ND ug/L ND ugfuNO ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L NO ugtL Run: GCMS2_060324A 130 130 130 130 130 130 130 130 t30 130 130 120 130 130 l2a Run: GCMS2_080324A 80 t2070 t3080 120 80 t20 Run: GCMS2_080t24A Batch: R98558 03i24n08 tl:25 03t24108 13-22 03/2y08 20 t2 70 70 70 70 70 70 70 70 7A 70 70 EO 70 80 80 l, I t, Ii I 1.0 112 1 .0 111 1.0 104 1.0 t06'1.0 105 20 93 1.0 108 1.0 81 10 105'r.0 107 1.0 105 1.0 s8r.0 s8'1.0 t011.0 t01 05 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 103 102 103 s8 Sampl€ Matrix Splke 97O ug/L 1 ,l00 ug/L ,100 ug/L 980 ugrL 1OO0 ugtL960 ug/L 97 70 11r 70 106 70 98 70'101 70 s6 70 50 50 50 50 50 50 130 130 130 130 130 130 Qualifiers: RL -Analyto reportlng llmit.ND - Not detecled at th€ reporting limit I ENEBGY LAaonAToElEs, Ne . z39J safi creek Highway (8p60t) . po, gox gzsa , Casper waz60r Totl fiee 8e8.235.05t5 ' 30z,2J5.0i ti , Fax a1z.zs4. 1639 , Taspueiwergyrai.*A . wu;iiiiriyiao.ioi- I I QA/QC Summary Report Client D€nison Mines (USA) Corp Project: 1st Quarter Groundwater Report Date: 04/29/08 Work Order: C08030921IAnalyteResultUnltsQuar I RL %REC Low Llmlt Htgh Llmtt Rpo RpDLtmtt I I trlethod: SWE260B Sample lD: C08030921{08EiIS Xyen€s, Total Sun: 1,2-Dichlorobenzene{4 Sun: Dlbromofluoromelhane Surr: p-Bromofluorobenzene Surr: Toluene-dB SamplelD: C08030921{08EMSD Benzene Carbon tetrachlorids Chloroform 11+p-Xylenes o-xyleno Toluene Xylenes, Total Sun: 1,2-Dlchlorobenzen€d4 Surr: Dibromofl uorometheng Sun: p-Bromofluorobinzene Surr: ToluenedB Ssmple Matrix Spike 2000 rrg/L Samplo Matrlx Spike Duplicale 990 ug/L 1 100 uglL 1'100 ug/L 950 ug/L 1000 uglL 930 ug/L 1900 uglL Run: GCMS2_080324A70 13060 12070 13080 12080 120 Run: GCMS2_080324A 7A 13070 13070 13070 13070 13070 13070 13080 tza 70 13080 12080 120 50 99 1.0 107 1.0 113 1.0 110 1.0 99 50 99 50 112 50 106 50 95 50 100 50 93 50 97 t.0 105 1.0 10E 1.0 108 1.0 96 Batch: R98558 03n5fi8 z0:1? 03/25/08 20:51 20 z0 20 20 20 2D 20 10 10 10 10 Il I 2.0 o.7 0.0 2.9 1.6 2.s 2.2 0.0 0.0 0.0 0.0 Qualifiers: RL . Aaa,yta reportirrg limrt.ND - Not dgtected at the reporting limit. Iti tlslls ll s , llgielE,.91ojEl; l€l-s i liFi I o-, tt 6 l o'€lc5' ilrH flEi lls; ; glEE lslSF'i FIsI JJz= l ,lEi I llgE+ ,{iilxlrE=.t5I EOE tle= E ;lss.EJIE! El.gE hlE8 6 Isr S ilHs $ lifi Il=o€IEE (U IH E.E 1 o,9. ut ll.F gIE }lO LlB B Es € E .!EI E btos$\!s Fd= e -itE-.{' 212o.E H.E )+ EEE.9 sra!= cjE= X FE:€€O= an 5EEd€ sHigIE EG EE€15 \.o (IV0 punoeuJnl Hsnu .4,\4 \./\'t$KG \ rcq[ rfusseorp Xuogele6eflsp;logls11oglage7filty EOgnSMV:edA1 eptueg ksJouleluoC Jo JequnN = ./r40oooE!, u \'}ooog A{ €i -Q tr =o tr 0- 5 =tsLt-ob€o-O oILE .gJcrotr g L.9LCL!€tr ooJ vO(a-J =6'l'E opP <(EE JEg NE€<t!Er.EotrcL=&EN EEEg5tr=3n orPaorolu,J*.JXt:/6'ar9 D8DP,ErE )prOC) ;€t,Eie \oj:E)'6tUlrOrO..o,(E IE'o'El(EtEILIelr.E IEIol EIalololEItlclILIrlFIzlElo-IrrlU'I<tu, IJIo-I T HH I nrl o t-l o lF IPo # lr "l rgj Ei Igj Et<fi Ei;GE BEo={JL E€ Ef-^t-E Gff lNI o INI ols lp:oi #i*r.l lgi Ei,C rE$ l.i IEE<, EH(EE EE Eg Ef-^t-* Cr HH or!JU,ro)*J:rrYg-/6 'ar.9 D8DP,ErH )prOoi:),9ie ir oi:ElOtArOrO- .o lc .Eo Eo r.s-clol =lEIol(ElolE'I>tolLIcLlrjlzlEIo.lulol<tullJIo-I f,-ry. olclf .o orIa?-cl5E= I ESE I gEE I t€ fi ln>\ o EDlg E'BE l5 t) ovJpunoeurnlHSnU Jol{lo ^essBolE Xuolela6€^sp[os/slo$re1em4y EOgn SMV:sdIleldureg k =s ,s-" \ S\oss Tc5: o o Lo. Eetro> oE o39, J L> =6YE oeP <(EE= JEr GlEe <' tL a!-rEOEo-=&AB EE6g5tr=.r, t I t T t I I T t t T I Workorder Receipt Checklist Denison Mines (USA) Corp Login completed by: Edith McPike Reviewed by: Reviewed Date: Energy Laboratories lnc Shipping container/cooler in good condition? Custody seals intact on shipping container/cooler? Custody seals intac{ on sample bottles? Chain of custody present? Chain of custody signed when relinquished and received? Chain of custody agrees with sample labels? Samples in proper container/bottle? Sample containers intact? Sufficient sample volume for indicated test? All samples received within holding time? Container/Temp Blank temperature in compliance? Water - VOA vials have zero headspace? Water - pH acceptable upon receipt? Yes fl Yes fl Yes I Yes fl Yes ffi Yes fl Yes M Yes I Yes fl Yes [l Yes fl Yes fl Yes fl NoI NoE NoD NoE No fl No E] NoE NO EI NoE No fl NoD NoE NoE 4'C On lce No VOA vials submitted tr NotApplicable tr I ffi til ilil tilil ilfl tilfi fl il ltil ilil il]ffi ilil c08030921 Date and Time Received: 312112008 6:17 PM Received by: ah Carrier name: Next Day Air NotPresent ! Not Present f] Not Present fl I I I I I t I Contac't and Corredive Action Comments: 1 vial for VOC-8260 for sample was broken ENEBGY LABORATORIES, -lNC ' 2393 Saft Creek Hig-hway (8260/) . PO. Box 3258 . Caspet Wy A2602TotlFree888.235.05t5 ' 307.2s5.0515 . Fax 307.234.r0bs :'ciiiiicieiirsytal;.oi:*i,iiiiiiiiab.*, t Date: 29-Apr-08 T I I I I t I I I T t I I T I I Project: Denison Mines (USA) Corp 1st Quarter Groundwater CASE NARRATIVESample Delivery Group: C08030921 THIS IS THE FINAL PAGE OF THE I-ABORATORY ANALYTICAL REPORT oRTGTNAL SAMPLE SUBMTTTAL(S) All original sample submittals have been returned with the data package. SAMPLE TEMPEMTURE COMPLTANCE: 4"C (r2.C) Temperature of samples received may not be considere{ properly preserved by accepted standards. samples that arehand delivered immediately after collection shall be considered atceptabte if thlre is bviOence that the ct"ritting pio;esshas begun. GROSS ALPHAANALYSIS Jvle!.h9d 900'0for 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 as inconsiste-nt. 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. Maximum recomriended delay Oetween end of exposure tobeginning ofcounting should not exceed 8 days. SOIUSOLID SAMPLES All samples reported on an as received basis unless othenrvise indicated. ATRMINE, 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. \Mren the results for all seven "re tlo lnot d'etected), ine ,"mpr"meets EPA compliance criteria for PCB monitoring. SUBCONTRACTING ANALYSIS subcontracting of sample analyses to an outside laboratory may be required. lf so, ENERGY LABoMToRIES will utilizeits branch laboratories or qualified contract laboratories toittris iervice.' Any such tiuoratories will be indicated within theLaboratory Analytical Report. BRANCH I.ABORATORY LOCATIONS eli-b - Energy Laboratories, lnc. - Billings, MT eli-g - Energy Labo-ratories, lnc. - Gillette, \Aff eli-h - Energy Laboiatories, lnc. - Helena, MT eli-r - Energy Laboratories, lnc. - Rapid City, SD eli-t - Energy Laboratories, lnc. - College Station, TX CERTFICATIONS: USEPA: !1Y00002; FL-DOH NELAC: EBZ 641 ; Arizona: 420699; catifornia: 02 1 1 8cAOregon: \rvY200001; Utah: 3072350515; Virginia: 00057; Washington: C1903 ISO 17025 DISCLAIMER: The results of this Analytical Report relate only to the items submitted for analysis. ENERGY LABOMTORIES, lNC. - CASPER,WY certifies that certain method selections contained in this report meetrequirements as set forth by the above accrediting authorities. Some results r"qr"rt"olv tn" client may noi ue coveieounder these certifications. All analysis data to belubmifted for regulatory entoriemeni;lilE ue certiti6o i" *rL iarpi"state of origin. Please veriff ELI's certification coverage by visitin! www-energylab.com ELI appreciates the opportunity to provide you with this analyticat service. For additional information and services visit ourweb page www.energylab.com. I T ].ll oI rs tpt d; 'EE .JE lilEbg EE'Ed Ea Eg(UE E.E dEoEFiEE, EfiI HH dp CD o)oLo (DLcooooc(,)EEEoCLo(l)Eo(J ulos$\$ :Jzo o.E uE 6cf .9 ora:-- c-rE=uEfa h_EuE c)gEi -Eoilg E>t U' trDEok2?E .r) (lvJ punoreirnl HSnU .>--,tt K,s \ leqlS {esseo;[ X uogela6efr spgoglsg1ogrcpfi4f IOgnSMV:edl1 epureg k E \$oth r- \(s ^A 'S,-\ €i€ ./r.40ooo!E o'oo!,X3 tr =o tr(L 5 E =LL0)b€o-o iioII! E =gotrtoo.otr o Lo LCL!oEUo> oE €O3b r L> =6'l'E o EEEg6t=u, tn1 lg lp o rp TEII:J tgj TEJt-\*r0 Et k'l(trE IeEo= EgoEE'EE, E$ I h orPJOro\(,,J* iqtB 'orP D8DP,ErH )prOoi:t.g t& )oi;-olOt (ItrOrCL .U',(E co.E (E ELo t.E I.clol=lEIol(oIolEI>lot+tl-lzlElo-IulU'I<tlutJIo. I Try.s'6{E rt$d\+ xr('.Pl,93i+ r n;L zoo.b frE Ecr.9 oru)=ciE:(FE :E5 ^- U)'E.E p -Eddg E>o trD>,(,, o, lxE or k lE:;'5 lE o (IVI) punoJeu.rnl HSnU Je$6 ^esseolE Xuolqe6enspps/sg;ogre1e76.rg Igg1g14y:ed{1 epueg k =t4+,s-\SrooE Ag o L.9LCLEetr oE eO3d,-L> =6'l'e n#t 5 IEu N I s5€ < I ElLE I E FE,,lr coEd, E.Eo'o EH6g5t=u, I I I I I I I I T I I I I t T I T I t Workorder Receipt Checklist Denison Mines (USA) Corp Energy Laboratories lnc Login completed by: Edith McPike Reviewed by: Reviewed Date: Shipping container/cooler in good condition? Custody seals intact on shipping container/cooler? Custody seals intact on sample bottles? Chain of custody present? Chain of custody signed when relinquished and received? Chain of custody agrees with sample labels? Samples in proper container/bottle? Sample containers intact? Sufficient sample volume for indicated test? All samples received within holding time? Containerffemp Blank temperature in compliance? Water - VOA vials have zero headspace? Water - pH acceptable upon receipt? Yes fl Yes fl Yes fl Yes fl Yes ffi Yes fl Yes fl Yes fl Yes fl Yes ffi Yes fl Yes fl Yes B[ tr ffiililffi utililililililililt ililflilililffi c08030921 Date and Time Received: 312112008 6:17 PM Received by: ah Carrier name: Next Day Air No fl No! NoE NoE No! No fI NoE No EI NoE NoD NoE No fJ NoE NotPresent I NotPresent I NotPresent fl 4'C On lce No VOA vials submitted NotApplicable tr Contact and Corective Action Comments: 1 vial for VOC-8260 for sample was broken ENERGY LABORATORIF-S! lNC. ' 2393 Salt Creek Highway (s2o0t) . pO. Box S2S8 , Caspet; Wya260zrot/Free888.23i.05ts . 307.2ai.051s . Fax sbi.?it.i6ii :d;i;;Ar;;;syEi;.bii:,rdiiiiiiirrb.Zo, Date: 29-Apr-08 I I I T t I I I T T I t T T I I Project: Denison Mines (USA) Corp 1st Quarter Groundwater CASE NARRATIVESample Delivery Group: C0BO3O921 THIS IS THE FINAL PAGE OF THE ISBORATORY ANALYTICAL REPORT oRtctNAL SAMPLE SUBMTTTAL(S) All original sample submittals have been returned with the data package. SAMPLE TEMPEMTURE COMPLTANCE: 4.C (r2.C) Temperature of samples received may not be consideied properly presgrye.q by accepted standards. samples that arehand delivered immediately after collection shall oe consioerJa "i,":"ptror" if thlre is lviJence that the chiiling processhas begun. GROSS ALPHA ANALYSIS Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters. Data providedby this method for non potabte waters should be viewedai in""".i.il]rl 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 exceisive decay. rvrrx#r, r""ommended delay between end of exposure tobeginning of counting should not exceed g days. SOIUSOLID SAMPLES All samples reported on an as received basis unless otherwise indicated. ATRMINE, SIMAZINE AND PCB ANALYSIS USING EPA 505Data for Atrazine and simazine are reported from EPA 525.2, nolfrom EpA _50s. Data reported by ELI using EpA method505 reflects the results for seven individual Aroclors. rrunen tire reiuiis fo, all seven are l,jD (not detected), the samplemeets EPA compliance criteria for pCB monitoring. SUBCONTRACTING ANALYSIS subcontracting of sample analyses to an outside l.ab.oralorv.n1ay be required. lf so, ENERGY LABoMToRIES will utilizeits branch laboratories or qualifred contract laboratories roitnis lervice. Any such laboratories will be indicated within theLaboratory Analytical Report. BRANCH I.ABOMTORY LOCATIONS eli-b - Energy Laboratories, lnc. - Billings, MT eli-g - Energy Laboratories, lnc. - Gillette. Wy eli-h - Energy Laboiatories, lnc. - Helena, MTeli-r - Energy Laboratories, Inc. - Rapid City, SD eli-t - Energy Laboratories, lnc. - Coilege Siation, TX CERTFICATIONS: USEPA: WY00002; FL-D.OHNELAC: E87641; Arizona: M0699; Catifornia: O2118CAOregon: WY200001; Utah: 3072350515; Virginia: 00057; Washi;;b;: btSOS ISO 17025 DISCLAIMER: The results of this Analytical Report relate only to the items submitted for analysis. ENERGY LABoRAToRIES, lNc' - CASPER,WY certifies that certain method selections contained in this report meetrequirements as set forth by the above accrediting authorities. some iesutts requested by the client may not be coveredunder these certifications. Ail analysis data to ue-suumitteo 6r;"dLi;ry enforiement #olio be certified in the samptestate of origin. Please verify ELI's certification coverage by visitiniwww.energylab.com ELI appreciates the opportunity to provide you with this analytical service. For additional information and services visit ourweb page www.energylab.com. I t t I AMERICAN WEST 1,^ilffi::t: I April0l, 2008 Steve Landau Cash Account , TEL: FAX: RE: Denison Mines / First Quarter Groundwater Dear Steve Landau: I T 463 West 3600 South Salt Lake Ciry, UT 841 15 Jose Rocha QA Officer Lab Set ID: L83063 I (8or)263-8686 Toll Free (888) 263-8686 I Fax (801)263-8687 ,mail : awal@awal-labs.com I Kyte F. Gross t Laboratory Director American West Analytical Labs received 15 samples on3/2112008 for the analyses presented in the following report. All anallses were performed in accordance to National Environmental Laboratory Accreditation Program (NELAP) protocols unless noted otherwise. If you have any questions or concerns regarding this report please feel free to call. The abbreviation "surr" found in organic reports indicates a surrogate compound that is intentionally added by the laboratory to determine sample injectiorq extraction and/ or purging efficiency. Thank you. I I I I T I I Approved by: a , I F- Digitatty signed by Kyte F.KYIO F.il,i^t,fij;,ir1: G ross B"II";{;:J]::';,. -06,00. Laboratory Director or designee Ii";ilf;,il::fi B**i;fi'*il.:*,i"-:mil,ifu *i: I T T Client: Cash Account Project ID: Denison Mines / First euarter Groundwater Lab Sample ID: L83063-01A Field Sample ID: MW-27 Collected: 3ll7/2008 2:40:00 pM Received: 312112008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Landau Analyzed: 3/28/2008 8:21:00 AM AMERICAN WEST ANALYTICAL LABORATORIES T VOLATILES bv GC/NIS 82608 I 463 West 3600 South Salt Lake City, UT 841 t5 Units = pgll- Dilution Factor: 1 Compound Reporting Limit Analytical Result I Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 8s-l 15 80-t24 88-120 <2.0 ltz 101 105 97.9 I (8or) 263-8686 f":;:i:::#;i::: mail : awal@awal-labs.comIKyle F. Gross llaboratory Director I u"#:T t I T I I I The pH of the sample was >2. r ReportDate: 4/l/2008 Page2of23 I I Client: Cash Account Project ID: Denison Mines / First Lab Sample ID: L83063-O2A Field Sample ID: MW-23 Collected: 3/1812008 7:5 I :00 AM Received: 3/2112008 Analysis Requested: 82608/50308 Analytical Results GroundwaterQuarter Contact: Steve Landau Analyzed: 3128/2008 8:46:00 AM I AMERICAN WEST I ANALYTICALrroro*ToRrEs t T-,:"TffJ:T,:T VOLATILES bv GC/MS 82608 Units: pgll. Dilution Factor = 1 Compound Reporting Limit Analyical Result I Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe nzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l - 143 8s-1 15 80-124 88-120 <2.0 115 102 107 97.8 I (8or) 263-8686 i"H[::],,'#:; mail : awal@awal-labs.com T Kyle F. Gross The pH of the sample was >2. t Laboratov T fi"#::: I T T I T I Report Date: 4/IlZ00g page 3 of23 I I Cash Account ID: Denison Mines / First euarter Groundwater Contact: Steve Landau T AMERICAN WEST I ANALYTICALlroro*TozuES I T,,:,TffJ:ffiT Lab Sample ID: L83063-03A Field Sample ID: MW-12 Collected: 311812008 9:36:00 AM Received: 312112008 Analysis Requested: 82608/50308 Analytical Results ILOLATILES bv GC/MS 82608 Units: prgll. Dilution Factor: I Compound Reporting Limit Analytical Result 841 l5 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe r:zene Surr: Dibromo fluoromethane Surr: Toluene-d8 T 2.0 8l-143 85-l 15 80-124 88-120 <2.0 tt4 103 105 96.9 t (8or) 263-8686 i":;:ffi:ffiffi: mail: awal@awal-labs.comIKyle F. Gross I Laboratory Director T I:'#:T T t I T t I The pH of the sample was >2. R€port Date: 4/1n008 Page4of23 t I t I*tx*;ffit: I AMERICAN WEST Client: Cash Account Project ID: Denison Mines / First Quarter Groundwater Lab Sample ID: L83063-04A Field Sample ID: MW-s Collected: 311812008 l1:45:00 AM Received: 3/2112008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Landau Analyzed: 312812008 11:42:00 A VOLATILES bv GC/MS 82608 Units: pgll, Dilution Factor: I Compound Reporting Limit Anallical Resultl-'iJ::;i.# I 84r rs Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-143 85-t 15 80-124 88-120 9.2 115 99.4 106 97.0 t (8ol) 263-8686 r"T"":ffi:ff#:; mail: awal@awal-labs.comI Kyle F. Gross lLaboratory Director I u"#::: T I I I T t The pH of the sample was >2. R€port Date: 4ll/2008 page 5 of23 ORGANIC ANALYSIS REPORT Client: Cash Account Project ID: Denison Mines / First euarter Groundwater Lab Sample ID: L83063-05A Field Sample ID: MW-ll Collected: 311812008 2:00:00 pM Received: 3/2112008 Analysis Requested: 82608/50308 Analytical Results t I I AMERICAN WEST I ANALYTICALrroro*ToRrES I !"il"J;i.# Contact: Steve Landau Analyzed: 3128/2008 12:07:00 pM VOLATILES bv GC/MS 82608 Units = pgll, Dilution Factor: 1 Compound Reporting Limit Analytical Result t I (801) 263-8686 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-143 85-1 I 5 80-124 88-120 <2.0 tt4 103 r06 97.0 f":;;ffi:ff#:; mail: awal@awal-labs.comI Kyle F. Cross I Laboratory Director I l:H:: I T I The pH of the sample was >2. t I I I . R€portDate: 4/l/2O08 Page6of23 ORGANIC ANALYSIS REPORT Client: Cash Account Project ID: Denison Mines / First euarter Groundwater Lab Sample ID: L83063-06A Field Sample ID: MW-2S Collected: 311812008 4:15:00 pM Received: 312112008 Analysis Requested: 82608/50308 Analytical Results T I I AMEzuCAN WEST I ANALYTICAL rresoRAToRrES I I.,:J:;;JH,";T Contact: Steve Landau Analyzed: 3 /2812008 I 2:32:00 pM VOLATILES bv GC/]\{S 82608 Units: Dilution Itg/LFactor: I Compound Reporting Limit Analyical Result 841l5 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe nzene Surr: Dibromo fl uoromethane Surr: Toluene-d8 T 2.0 81-143 85-1 1 s 80-124 88-r20 <2.0 tt6 101 r07 96.6 I (8ol) 263-8686 l'oll Free (888) 263-8686 I Fax (E0t)263-8687 mail : awal@awal-labs.com T Kyle F. Gross t Laboratory Director r Jose Rocha I eA orficer I The pH of the sample was >2. I T I I I I ReportDate: 4/l/2008 Page7of23 ORGANIC ANALYSIS REPORT Client: Cash Account Project ID: Denison Mines / First euarter Lab Sample ID: L83063-07A Field Sample ID: MW-29 Collected: 311912008 8:00:00 AM Received: 312l/2008 Analysis Requested: 82608/50308 Analytical Results I I aterGroundw / Contact: Steve Landau Analyzed: 312812009 1 2:57:00 pM T AMEzuCAN WEST I ANALYTICALrrogoRoroRrES I l":,T;;i.# VOLATILES bv GC/MS 82608 Units = Dilution ttg/L Factor: I Compound Reporting Limit Anallical Result 8411s Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 I 2.0 8l - 143 85-l 15 80-124 88-120 <2.0 116 102 107 98.7 I (8or)263-8686 r":;:i:::ff;jtr; mail: awal@awal-labs.comI Kyle F. Gross lLaboratory Director I fi"#:T I I T I I I The pH of the sample was >2. t"" . ."" " , . Report Date: 4/|/2OOB Page 8 of 23 I I Cash Account ID: Denison Mines / First Quarter Groundwater Contact: Steve Landau Analyzed: 3 12812008 I :22:00 pM I AMERICAN WEST I ANALYTICALr ro"onorozuEs I I,,il:::J:'J:T Lab Sample ID: L83063-08A Field Sample ID: MW-30 Collected: 3ll9l200S l0:10:00 AM / Received: 3/2ll2OO8 t/ Analysis Requested: 82608/50308 Analytical Results VOLATILES bv GC/MS 82608 Units: pgll- Dilution Factor: I Compound Reporting Limit Anallical Result 841 l5 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 I 2.0 81-143 85-1 l5 80-t24 88-120 <2.0 115 102 107 98.5 I (8ol) 263-8686 i"":::ff:];';ffi; mail: awal@awal-labs.comI Kyle F. Gross I Laboratory Director t u"#:T T t I T T t The pH of the sample was >2. ReportDate: 4/llZ00B page9of23 ORGANIC ANALYSIS REPORT Client: Cash Account Project ID: Denison Mines / First euarter Groundwater Lab Sample ID: L83063-09A Field Sample ID: MW-31 Collected: 3/ 19/2008 1 2:20:00 pM Received: 312112008 Analysis Requested: 82608/50308 Analytical Results I I T AMERICAN WEST 1,"fl*;ffit: T Contact: Steve Landau Analyzed: 312812008 l:47:00 pM VOLATILES bv GCiMS 82608 T-,:"T:;;Jff,";T Units: pgll, Dilution Factor: I Compound Reporting Limit Analytical Result 841 l5 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe r:zene Surr: Dibromo fluoromethane Surr: Toluene-d8 I I 2.0 8l-143 85-1 ls 80-124 88-120 <2.0 tl7 101 108 97.9 (801) 263-8686 oll Free (888) 263-8686 Fax (801)263-8687 The pH of the sample was >2. mail: awal@awal-labs.comI Kyle F. Gross I Laboratov I t I T I t I Jose Rocha QA Officer f . ReportDate: 4/ll2OO8 PagelOof23 I I t ORGANIC ANALYSIS REPORT Client: Cash Account Project ID: Denison Mines / First Quarter Groundwater Contact: Steve Landau Analyzed,: 312912008 6:30:00 AM AMERICAN WEST ANALYTICAL LABORATORIES Lab Sample ID: L83063-10A Field Sample ID: MW-l Collected: 311912008 2:37:00 PM Received: 312l/2008 Analysis Requested: 82608/50308 Analytical Results VOLATILES bv GC/NIS 82608t T-,:"TffJ:[}T Units = ttg/L Dilution Factor: I Compound Analyical Reporting Limit Result 841 15 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fl uorobe rzene Surr: Dibromo fluoromethane Surr: Toluene-d8 I I lot 2.0 81-143 85-1 15 80-r24 88-120 <2.0 r15 104 104 97.3 (801) 263-8686 ll Free (888) 263-8686 Fax (801)263-8687 The pH of the sample was >2. mail: awal@awal-labs.comIKyle F. Gross tlaboratoV Director t I I T I I T Jose Rocha QA Officer Report Date: 41112008 Page l1 of23 I I Client: Cash Account Project ID: Denison Mines / First euarter Groundwater Lab Sample ID: L83063-l1A Field Sample ID: MW-3 Collected: 311912008 3:30:00 pM Received: 3121/2008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Landau Analyzed: 312912008 6:55:00 AM I AMERICAN WEST r ANALYTICALlro"o*ToRIES I VOLATILES bv GC/MS 82608 Units: pgll, Dilution Factor: I Compound Reporting Limit Anallical Result 841r5 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe rzene Surr: Dibromo fluoromethane Surr: Toluene-d8 I 2.0 81-143 85-l 15 80-124 88-120 6.5 115 104 105 98.9 I (8or)263-8686 f":;:i::K';jx; mail : awal@awal-labs.comI Kyle F. Gross t t aboratory Director The pH of the sample was >2. T I I t t I t Jose Rocha QA Officer Report Datq 4/ll200g page 12 of23 Chent: Project T I Cash Account ID: Denison Mines / First Quarter Groundwater Contact: Steve Landau Analyzed: 312912008 8:35:00 AM I AMERICAN WEST I ANALYTICALrro"o*ToRrES I Lab Sample ID: L83063-12A Field Sample ID: MW-14 Collected: 311912008 5:17:00 PM Received: 3121/2008 Analysis Requested: 82608/50308 Analytical Results VOLATILES bv GC/MS 82608 T-,:,TT;JH:;T Units: prgll. Dilution Factor: 1 Compound Reporting Limit Analytical Result 841l5 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 I 2.0 8l-143 85-1 1s 80-124 88-120 <2.0 117 101 106 96.7 I (8or)263-8686 loll Free (888) 263-8686 I Fax (uot tz63-B6l3j mail: awal@awal-labs.comIKyle F. Gross t Laboratory Director I il"#::: I I I I I I The pH of the sample was >2. ReportDate: 4/112008 Page13of23 I I Client: Cash Account Project ID: Denison Mines / First Quarter Groundwater Lab Sample ID: L83063-13,{ Field Sample ID: MW-60 Collected: 312012008 7:13:00 AM Received: 312112008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Landau Analyzed: 312912008 9:01:00 AM I AMERICAN WEST ANALYTICAL LABORATOzuES VOLATILES bv GC/MS 82608T I*ilT;JHIT Units: pgll, Dilution Factor: I Compound Analytical Reporting Limit Result 841l5 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 I 2.0 8l-143 85-1 l5 80-124 88-120 <2.0 115 104 106 97.2 t (8or)263-8686 i"::':ffiil,'#:; mail: awal@awal-labs.com T Kyle F. Gross lLaboratory Director T $"#:T I t I I T I The pH of the sample was >2. Reporr Date: 4/llZ00B page 14 of23 I I Client: Cash Account Project ID: Denison Mines / First Quarter Groundwater Lab Sample ID: L83063-l4A Field Sample ID: MW-70 Collected: 311812008 4:15:00 PM Received: 3/21/2008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Landau Analyzed: 312912008 9:26:00 AM VOLATILES bv GC/MS 82608 Units: pgll, Dilution Factor = I Compound Reporting Limit Analytical Result Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l - 143 85-1 15 80-124 88-120 <2.0 115 100 106 97.3 I AMERICAN WEST 1,^ilfi#;t: T 1"il"J:iH:;T 841 1sI I (8or)263-8686 foll Free (888) 263-8686 I Fax (uul )26i-86u7 mail: awal@awal-labs.com t Kyle F. Gross I Laboratory Director T I:.#:T T I I I t I The pH of the sample was >2. Report Date: 4/l/2008 page 15 of23 I I I AMERICAN WEST Cash Account ID: Denison Mines / First Quarter Groundwater Contact: Steve Landau Analyzed: 312912008 9:51:00 AMl,^il*;:ffi: I Lab Sample ID: L83063-l5,{ Field Sample ID: MW-75 Collected: 3119/2008 5:17:00 PM Received: 3121/2008 Analysis 82608/5030B Analytical Results VOLATILES bv GC/MS 82608 t 463 West 3600 South Salt Lake City, UT 841 l5 Units: pgll, Dilution Factor: I Compound Reporting Limit Ana$ical Result I Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe nzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-1 15 80-t24 88-120 <2.0 119 103 107 96.4 I (8or)263-86s6 Joll Free (888) 263-8686 I Fax (801)263-8687 mail: awal@awal-labs.comt Kyle F. Gross I Laboratory Director The pH of the sample was >2. T I I I I T t Jose Rocha QA Officer I ReportDate: 41112008 Page l6of23 K99 q9 ?99 € oO € ca 99 ? ? € ca oo oo co € oo € ao oo € 6 oo €oo € oo € E=========.==..=.a==-=d======= = = - i _ a q q A q q e e! 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I>t cEl :lal6)l BI-lFrldlCJI.-ltrlol EI<l I I i I i I i I 'iI i I Rel i!q uishqgl-By: (Signature)Received By:(Signature) Ii II I { I I iI J 'iI i I It i I J i II I T G,$ DENrsorru#t)s6)MINES CHAIN OF CUSTODY Samples Shipped to: _ffnsIcqLylest Anplyticat Laboratory @463 West 3600 South Phone: AO Chain of Custody/Sampling Analysis Request Name ble*se- (eruP.r I 6to. Tcc &5 Loa^l D€'^riso"'r I i I I t t I t I I I I I t Ij I I I I I I I ij i I 8 o3 ,t tt-l sl.-er^t lo^ \nu 9tt1 Sc?INTERNATIONAL URANIUM (USA) CORPORATION {vl ).o> CI-IAIN OF CUSTODY Samples Shipped to: Chain of Custody/Sampling Analysis Request Laboratory Analysis RequestedSample ID ate/Time I Received By:(Signature) shed by:(Si$nature) Please return sioned Chain of Custody record. cooler and blue ice ASAP. T I I AMERICAN WEST l,^ilil;:'tr: t 463 West 3600 South I Salt Lake ciry, ur 84115 I I (8or)263-8686 Toll Free (888) 263-8686 I Fax (801)261-8687 'mail : awal@awa[-labs.com I Kyle F. Gross ; Laboratory Director April02, 2008 Steve Landau Cash Account , TEL: FAX: Denison Mines / First Quarter Groundwater Lab Set ID: L83130Dear Steve Landau: American West Analytical Labs received 6 samples on312612008 for the analyses presented in the following report. All anallses were performed in accordance to National Environmental Laboratory Accreditation Pt'ogram (NELAP) protocols unless noted otherwise. If you have any questions or concerns regarding this report please feel free to call. The abbreviation "surr" found in organic reports indicates a surrogate compound that is intentionally added by the laboratory to determine sample injectiorq extraction and/or purging efficiency. Thank you. I t I T I I t Jose Rocha QA Officer Approved by: L I F Digitally signed by Kyte F. KY I e F . ";{ri^tllij;ftr,tiemail=kyte@awal-labs. fOSS B"#,"roti.ooo, 15:04:oB -06'00' Laboratory Director or designee Report Date: 412/2008 Page I of I I I I I Client: Cash Account Project ID: Denison Mines / First Lab Sample ID: L83130-014 Field Sample ID: MW-24 Collected: 3/2412008 1 1:01:00 AM Received: 3/2612008 Analysis Requested: 82608/50308 Analytical Results ORGANIC ANALYSIS REPORT Quarter / Groundwater Contact: Steve Landau Analyzed: 4/ l/2008 I :32:00 AM VOLATILES bv GC/MS 82608 AMERICAN WEST ANALYTICAL ABORATOzuES Units: pgll- Dilution Factor: 1 Compound Reporting Limit Analytical Result Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-143 85-l ls 80-124 88-120 <2.0 136 103 rt4 94.9 I 463 West 3600 South I Salt Lake ciry, ur 841 l5 I I (8or) 263-8686 loll Free (888) 263-8686 I Fax (801)263-8687 mail: awal@awal-labs.com I Kyte F. Gross ;LaboratoV Director Jose Rocha I eA orficer I I I I I I The pH of the sample was >2. Analysis was performed within 7 day holding time ReportDate: 4/2/2008 Page2of ll T I I I T AMERICAN WEST ANALYTICAL ABORATORIES ORGANIC ANALYSIS REPORT Client: Cash Account Project ID: Denison Mines / First euarter Groundwater Contact: Steve Landau Analyzed: 3/3112008 I l:52:00 pM Lab Sample ID: L83130-024 Field Sample ID: MW-26 Collected: 3/24/2008 2:08:00 pM Received: 3/26/2008 Analysis Requested: 82608/50308 Analytical Results VOLATILES bv GC/MS 82608 Units: prgll. - 463 West 3600 South Dilution Factor : I t salt Lake ciry, ur compound Reporting Limit Analytical Result t T <2.0 131 104 114 95.9loll Free (888) 263-8686 I Fax (801)263-8687 mail: awal@awal-labs.com I Kyle F. Gross ;LaboratoV Director Jose Rocha I eA officer I T T t T T i,.i;ft ii"#fi +iJiilpf"-':lt1,l;#ffi ilr; 84115 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe nzene Surr: Dibromo fluoromethane(8ol) 263-8686 Surr: Toluene-dg 2.0 81-143 85-l 15 80-124 88-120 I I I AMERICAN WEST ANALYTICAL ABORATORIES ORGANIC ANALYSIS REPORT Client: Cash Account Project ID: Denison Mines / First Quarter Groundwater Lab Sample ID: L83130-034 Field Sample ID: MW-28 Collected: 312412008 l:05:00 PM Received: 3/2612008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Landau Analyzed: 41 112008 12: 1 7:00 AM VOLATILES bv GC/MS 82608I l-':"I:;:iff,TT Units = ltg/L Dilution Factor: 1 Compound Reporting Limit Analytical Result t T (801 ) 263-8686 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe t:r;ene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-143 85-1 15 80-124 88-120 <2.0 132 103 tt2 94.5loll Free (888) 263-8686 t Fax (801)263-8687 mail: awal@awal-labs.com I Kyle F. Gross lLaboratoV Director Jose Rocha I eA officer I I T T t I Report Date: 4/212008 Page 4 of I I t I I Client: Cash Account Project ID: Denison Mines / First euarter Groundwater Lab Sample ID: L83130-044 Field Sample ID: MW-32 Collected: 312412008 3:40:00 pM Received: 3/2612008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Landau Analyzed: 4/112008 12:42:00 ANt AMERICAN WEST ANALYTICAL LABORATORIES VOLATILES bv GC/MS 82608 Units: pgll. Dilution Factor = I Compound Reporting Limit Analytical Result Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobe nzene Surr: Dibro mo fluoromethane Surr: Toluene-d8 2.0 8l-r43 85-1 l5 80-124 88-120 <2.0 132 101 lt4 95.1 t 463 West 3600 South I sau Lake.rry, UT 84115 I I (8or)263-8686 loll Free (888) 263-8686 t Fax (801)263-8687 mai I : awal(lawal-labs.com I Kyle F. Gross ;LaboratoV Director Jose Rocha I eA officer t I t I I I The pH of the sample was >2. Analysis was performed within 7 day holding time. i,i:,ft [;#fi +;J{irp}#trfif sffi trl; I I I Client: Cash Account Project ID: Denison Mines / First euarter Groundwater Lab Sample ID: L83130-054 Field Sample ID: MW-65 Collected: 312412008 3:40:00 pM Received: 312612008 Analysis Requested: 82608/50308 Analytical Results Contact: Steve Landau Analyzed: 4/l/2008 l:07:00 AM AMERTCAN WEST ANALYTICAL ABORATOzuES VOLATILES bv GCiMS 82608I T 463 West 3600 South Lake City, UT Units: pgll, Dilution Factor: I Compound Reporting Limit Analytical Result Tetrahydrofrran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 8l-r43 8s-l l5 80-124 88-120 <2.0 134 102 115 94.1 t I (8or) 263-8686 foll Free (888) 263-8636 I Fax (801)263-8687 mail: awal@awal-labs.com t Kyle F. Gross ,LaboratoV Director Jose Rocha I eA orficer I I I t I I Report Date: 4/212008 page 6 of I I ORGANIC ANALYSIS REPORT Client: Cash Account Project ID: Denison Mines / First euarter Groundwater Lab Sample ID: L83130-06A Field Sample ID: Trip Blank Collected: 3124/2008 Received: 312612008 Analysis Requested: 82608/50308 Analytical Results t I Contact: Steve Landau Analyzed: 3/3112008 I l:27:00 pM I AMERICAT l,,^fl*;;ffi: I l-':,TI;iH',;:l VOLATILES bv GC/MS 82608 Units: pgll, Dilution Factor: I Compound Reporting Limit Analytical Result I t (801) 263-8686 Tetrahydrofuran Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromo fluorobenzene Surr: Dibromo fluoromethane Surr: Toluene-d8 2.0 81-143 85-1 1s 80-124 88-120 <2.0 129 100 111 93.sfoll Free (888) 263-8686 I Fax (801)263-8687 mail: awal@awal-labs.com I Kyte F. 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Yo,^.' ?.r^- t,,(*. f+ pl*sc Cerut n o oo6c Ef6o (D (E'=oo o.o-6o,c ;o- E').c o.oo E'c(U o'a,9 E.Exo0r5eE3=45 E d) rn o 5.:O o CLEE(U"oEYtr0,oLo,>: u- EaE-1gE d (E CLY 5 ar -Lc;iOE o:: E: O -qPg;qxooLv o e(It gr(J Fofir(u6 =tLo_(/j mll) E UoU€ €R o 0,act ).1 ()6)!l o1Fcl oll ot c!l q@(B oI() O.o 0) o a rJ E (6r!) lfrozE c)od qt C)ttl L6Jo)(J tf !C) <tEI (d Xo F<oot< o 0)5o. u)..l > tr o Iq(d A{.d (,) oI c/) Fl ts E] k0) d oU!0) oo u)*l4 > coz)-l \zE ozE 0(u q)bo €I! C) GP{ oI o o c,() F{ -zE oz E] q() tf qJa (i(A o I () (u H 4)-:ztr ozE qru q) bo(! c, C!o.,{ d,) o o oE \zg oZE qc) E ()a 6lU) o o L b !)tr6) Bq0) !() a) oa '1, H z trl oztr 6rt) >,1 oztr oolo tr blj clc)Iq() o m dc)d .d c) r<(.)a{.) A{ ko ro =E B ci6)& I I I I I4-Or\ct tri oCA .odrl I t I I I I I T I I I I T t I T I t T I T I I I T I t I I I I I Fd U'\d{{rFC, ?oo B duoFloA' o- o o o oa F' ,3Fl I II V)Foo(D Fd+FFdo Fd Irrd t!!* u.) N)(/r N)oC)oo l-H[i#[f], 5 tBs 1oF 1 DSNTSON MrNSS (USA) CORP.ei,u s. riwi. rs DWTr16,t2,10 BLAI.IDING uT84511 SHIP TO: AMERICAN WEST ANALYTICAL LABS 801 263 8686 463 WEST 3600 SOu"tH SAIT I.AKE CTTY UT 841.15.4246 ur 841 g-44 ilililItilrtillltilililttil uPs NEXT DAY ArR 1 TRACKING #:12841" 67L0L9A78256A I ilIItililililill ffil u,s10.1.06. w:grrlo7s.oAo!/2oo8 ffir, BIr.t.IfilS; P/P IIIIIIIIITI-IIIIIII l[ \r l\ ll\\\://4 // tt/ --: O r',rily-zr tl ll \\ $ \. Mw-20\ a3t6t\N I \ 0 3000 SCALE IN FEET EXPLANATION MW-20 perched monitoring well showing O Srct elevation in feet amsl *w-22 ./{at50 ,.///,//////,//.//.////,// temporary perched monitorins well NOTES: Locations and elevations for Tw4-23,Tw4-24, and TW4-25 are approximate;\., 55cu showing elevation in feet amsl tE7 t -^-^L^r -:^-^-^.^- ^L^...:-- Water level for TW4-O is from the third quarter. 2007PIEZ-I perched piezometer showinge 5591 elevation in feet amslMW-31 perched monitoring well installed April, f ss+s showing elevation in feet amsl ^ temporary perched monitoring well installed AF 5572 April, 2005 showing elevation in feet amsl \.1., __-- temporary perched monitoring well installed,a 5s39 May, 2007'showing approxim-ate elevation E(J()) /?1--U, \- )ErtQ)\v)' t <{ \\ \\ It llil //(// ll,t; t; lg ^ll 1l ;l 1l 1l 1l 1l 1l 1l 1l gl 1l 1l 1l 1l 1l 1l PIEZAc5538 h'/.r7/@ PtEZ-5e5538 KRIGED 4th QUARTER, 2OO7 WATER LEVELS WHITE MESA SITE HYDRO GEO CHEM,INC. H :/7 1 8000/feb08/wl 1 007.srf 4th Quarter 2006 Water Level Measurernents March,2008 - MWl - 67.45 MW3 -83.48 MW5 -106.87 MWl I - 9r.76 MW12 - 108.74 MW14 - 104.22 MWt5 - 106.95 MWl7 -78.18 MWl8 -72.70 MW19 - 5s.76 MW23 -1t3.97 }lW24 -115.15 MW25 -77.08 MW26 - 76.21 MW27 - 50.80 MW28 -74.18 MW29 -103.39 MW30 - 78.72 MW3l - 71.03 MW32 -77.51y2108 MW20 - 79.20 MW22 - 67.98 P1 - 63.80 P2 - t2.50 P3 - 31.20 P4 - 52.75 P5 - 46.60 3/26/08 - MW4 - 72.13 TW4-1 - 62.25 TW4-2 - 68.94 TW4-3 - 47.31 TW4-4 - 64.97 TW4-5 - 53.56 TW4-6 -73.t2 TW4-7 - 67.57 TW4-8 - 68.46 TW4-9 - 51.53 TW4-10 - 53.87 TW4-l | - 63.39 TW4-12 -36.34 TW4-13 - s0.1s TW4-14 -91.02 TW4-15 -79.89 TW4-16 - 62.73 TW4-t7 - 77.06 TW4-18 - s4.2r TW4-19 -67.68 TW4-20 - 71.58 TW4-21- 59.42 TW4-22 - 55.65 TW4-23- 67.66 TW4-24- 56.15 TW4-25- 49.40 Page I of 1 Steve Landau I I I t I I I Steve Landau [slandau@denisonmines.com] Thursday, May 29,2008 7:57 AM 'Dane Finerfrock' Subject: CSV Reports 1st Quarter 2008 Attachments: MarO8S1C08030583_R1 .csv; MaO8S2C08030921 .csv; Jan08C08020030_R1.csv; Feb08C08020844 R1.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 1st Quarter, 2008, in Comma Separated Value (CSV)format. Yours truly, Steven D. Landau Manager, Environmental Affairs Denison Mines (USA) Corp. 1050 17th Street, Suite 950 Denver, CO 80265 (303) 389-41 32 (303) 389-4125 Fax I I T t t 512912008