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Home My WebLink AboutDRC-2009-006628 - 0901a06880151201blC'^cc''(-(ZM}QV J>h Denison Mines (USA) Corp. 105017th Street, Suite 950 Denver, CO 60265 USA Tel: 303 628-7798 Fax: 303 389-4125 www.deni3onmines.coni DENISO MINES November 30, 2009 VIA Federal Express Dane L. Finerfrock, Executive Secretary Utali Radiation Control Board Utali Department of Environmental Quality 168 North 1950 West P.O.Box 144810 Salt Lake City, UT 84114-4810 Dear Mr. Finerfrock, Re: Transmittal of 3'"'' Quarter 2009 Routine Groundwater Monitoring Report White Me.sa Uranium Mill GWDP No. UG370004 Dear Mr. Finerfrock: Enclosed find two copies of the White Mesa Mill Groundwater Monitoring Report for the 3"^ Quaner of 2009, as required under Parts I.F.I and 2 of the State of Utah Groundwater Discharge Pemiit UGW370004. If you should have any questions regarding this report please contact me. Yours very truly. DENISON MINES (USA) CORP. STEVEN D. LANDAU Manager, Environmental Affairs cc: Ron Hochstein Harold Roberts David Frydenlund David Turk White Mesa Uranium Mill Groundwater Monitoring Report State of Utah Groundwater Discharge Permit No UGW370004 3rd Quarter July through September 2009 Prepared by Denison Mines USA Corp Suite 950 1050 17th Street Denver CO 80265 December 2009 INTRODUCTION This is the Routine Groundwater Monitoring Report as required under Part I.F of State of Utah Groundwater Discharge Permit No 370004 the Permit for the 3nd quarter of 2009 the Quarter for Denison Mines USA Corps DUSAs White Mesa Uranium Mill the Mill As required under Parts I.E.1 I.E.2 and I.E.4 of the Permit this Report includes all recorded field measurements and laboratory analyses for well monitoring conducted during the Quarter GROUNDWATER MONITORING 2.1 Samples and Measurements Taken During the Quarter map showing the location of all groundwater monitoring wells piezometers existing wells and temporary chloroform contaminant investigation wells is attached under Tab During the Quarter the following groundwater samples and measurements were taken during this reporting period July through September Groundwater Compliance Monitoring Quarterly Groundwater Compliance Monitoring Quarterly Groundwater Compliance Monitoring is performed in the wells listed below pursuant to Part I.E of the Permit MW-li MW-14 MW-26 formerly TW4-15 MW-32 formerly TW4-17 ii Accelerated Groundwater Monitoring 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-i MW-3 MW-S MW-12 MW-iS MW-17 MW-18 and MW-19 iii Quarterly Sampling for All New Wells Quarterly groundwater quality samples were collected from new monitoring wells in accordance with Part 1.11 of the Permit during the quarterly sampling event As such the following monitoring wells were sampled on those dates New Wells MW-20 MW.-27 MW-22 MW-28 MW-23 MW-29 MW-24 MW-30 MW-25 MW-3 The sample collection dates for monthly samples occurred on July 29 and September 2009 respectively Routine quarterly accelerated quarterly sample collection occurred on August 17 18 19 24 25 26 and 31 2009 iv Parameters Analyzed All routine groundwater monitoring samples were analyzed for the parameters listed in Table and Part I.E .c 2ii of the Permit The accelerated monitoring samples were analyzed for the more limited specific parameters described in Section 2.4 of this report Groundwater Head Monitoring Depth to groundwater was measured in the following wells andlor piezometers pursuant to Part I.E.2 of the Permit The quarterly groundwater compliance monitoring wells listed in paragraph 2.1 .a above were measured on September 10 2009 depending on location ii Piezometers P-i P-2 P-3 P-4 and P-5 on September 10 2009 iii Existing monitoring well MW-4 and all of the temporary chloroform investigation wells on September 10 2009 iv In addition to the above depth to water measurements are routinely observed in conjunction with sampling events for all wells sampled during monthly and quarterly monitoring efforts regardless of the sampling purpose 2.2 Field Data Sheets Attached under Tab are copies of all field data sheets where field data were recorded in association with the quarterly effort on August 17 18 19 24 25 26 and 31 2009 for the groundwater compliance monitoring wells listed in paragraph 2.1a above Attached under Tab are copies of all field data sheets where field data were recorded in association with monthly accelerated monitoring and sampling efforts during the month of July for monitoring wells MW-14 MW-26 and MW-32 Attached under Tab are copies of all field data sheets where field data were recorded in association with monthly accelerated monitoring and sampling efforts during the month of September for monitoring wells MW-14 MW-26 and MW-32 2.3 Laboratory Results --Routine Groundwater Monitoring 2.3.1 Copy of Laboratory Results All analytical results are provided by Energy Laboratories the Mills contract analytical laboratory the Analytical Laboratory The Laboratory Report date for samples collected for the July accelerated sampling was 8-18-09 Tab Also included under this Tab are the results of duplicate sample of MW-32 MW-65 7-29-09 Because the wells in the GWDP sampling program have been equipped with dedicated pumps since the November 2007 sampling rinsate sample is no longer collected An analysis of field blank was included with the monthly sampling MW-60 7-31-09 The Laboratory Report date for samples collected for the September accelerated sampling was 10-2-09 Tab Also included under this tab are the results of analyses for duplicate sample of MW-32 MW-65 9-9-09 Because the wells in the GWDP sampling program had been equipped with dedicated pumps for the November 2007 sampling rinsate sample is no longer collected field blank was not included with the monthly sampling Samples collected for the Quarter and Accelerated Quarterly samples under the Permit were reported to the QA Manager in four data sets received on 9-21-09 and one received on 10-2-09 Also included under Tab are the results of analyses for duplicate samples of MW-32 and MW-22 MW-65 8-11 8-19-09 and MW-70 8-26 8-30- 09 respectively field blank was not collected for the quarterly sampling episode Note Copies of laboratory QAIQC Summaries are included with the reported data at corresponding Tabs and 2.3.2 Analysis of Laboratory Results Under the Permit it is intended that background groundwater quality will be determined on well-by-well basis as defined by the mean plus second standard deviation concentration The Mill is cunently 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 report entitled Background Groundwater Quality Report Existing Wells For Denison Mines USA Corp White Mesa Uranium mill Site San Juan County Utah huera mc 2006 was transmitted to UDEQ on December 29 2006 In response to UDEQs review revised report was provided to UDEQ in October 2007 Revised Background Groundwater Quality Report Existing Wells For Denison Mines USA Corp White Mesa Uranium mill Site San Juan County Utah Intera mc 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 4/19/07 and Background Groundwater quality Report New Wells For the Denison Mines USA Corp White Mesa Uranium Mill Site San Juan County Utah Intera 6/1/07 Finally in response to comments provided by UDEQ Denison issued revised Addendum to the Report Background Groundwater quality Report New Wells For the Denison Mines USA Corp White Mesa Uranium Mill Site San Juan County Utah on April 30 2008 During the Quarter and on September 2009 Denison filed timely its renewal application for the Groundwater Discharge Permit GWDP Also public and Company comments were received by UDEQ in response to the published Draft of the to-be amended cunent GWDP Until such time as background is established by the amended Permit the Permit requires that constituent concentrations in each monitoring well shall not exceed the Groundwater Compliance Limits GWCLs set out in Table of the Permit DUSA 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 of the Permit Table GWCL Exceedanees for the 3rd Quarter 2009 Monitoring Well Water Class Constituent GWCL ugIL Sample Result uglL MW-14_Class_III Manganese 400 2140 Uranium 15 61.7 MW-26_Class_III Manganese 400 1530 Uranium 15 58.3 Chloroform 35 1200 Dichlormethane 15 23 MW-32_Class_III Cadmium 2.5 2.79 Iron 5500 8220 Monitoring Well Water Class Constituent Manganese Nickel GWCL uglL 400 50 Sample Result ugIL 5060 58 separate Notice of these exceedances has been submitted to the Executive Secretary on October 20 2009 pursuant to Part I.G .a of the Permit Unless the compliance status for any constituents in any wells is determined otherwise by the Executive Secretary the Mill will pursuant to Part I.G.1.b1 of the Permit commence or continue as the case may be accelerated sampling of each of the foregoing constituents in its respective well on monthly or quarterly basis as applicable as set forth below Table Accelerated Monitoring Requirements as of October 2009 Monitoring Well Water Class Constituent Normal Frequency of Sampling Accelerated Frequency of Sampling Commencement of Accelerated Monitoring MW-i Class_II Tetrahydrofuran Semi-Annual Quarterly 4th Quarter 2005 Manganese Semi-Annual Quarterly Quarter 2006 MW-3 Class_III Manganese Semi-Annual Quarterly 1st Quarter 2006 Selinium Semi-Annual Quarterly 3111 Quarter 2006 Thallium Semi-Annual Quarterly 4th Quarter 2005 Uranium Semi-Annual Quarterly 4th Quarter 2005 Tetrahydrofuran Semi-Annual Quarterly Quarter 2006 MW-S Class_II Manganese Semi-Annual Quarterly 4t Quarter 2005 Fluoride Semi-Annual Quarterly 4th Quarter 2005 Tetrahydrofuran Semi-Annual Quarterly 1st Quarter 2006 MW-i2 Class_III Manganese Semi-Annual Quarterly 4th Quarter 2005 Uranium Semi-Annual Quarterly 4th Quarter 2005 MW-i4 Class_III Manganese Quarterly Monthly June 2005 Uranium Quarterly Monthly June 2005 MW-iS Monitoring Well Water Class Constituent Normal Frequency of Sampling Accelerated Frequency of Sampling Commencement of Accelerated Monitoring Class_III Selenium Semi-Annual Quarterly 4th Quarter 2005 Uranium Semi-Annual Quarterly Quarter 2005 MW-17 Class_III Uranium Semi-Annual Quarterly 4th Quarter 2005 Thallium Semi-Annual Quarterly 1st Quarter 2006 MW-18 Class_II Thallium Semi-Annual Quarterly 4th Quarter 2005 Uranium Semi-Annual Quarterly 4th Quarter 2005 Manganese Semi-Annual Quarterly January 2008 MW-19 Class_II Fluoride Semi-Annual Quarterly 1st Quarter 2006 Selenium Semi-Annual Quarterly 4Y Quarter 2005 Thallium Semi-Annual Quarterly 1st Quarter 2006 Uranium Semi-Annual Quarterly 4h Quarter 2005 Nitrate Semi-Annual Quarterly 1st Quarter 2009 MW-26 Class_III Manganese Quarterly Monthly June 2005 Uranium Quarterly Monthly June 2005 Chloroform Quarterly Monthly June 2005 Dichloromethane Quarterly Monthly September 2005 MW-32 Class_III Cadmium Quarterly Monthly June 2005 Iron Quarterly Monthly June 2005 Manganese Quarterly Monthly June 2005 Nickel Quarterly Monthly June 2005 Gross Alpha Quarterly Monthly March 2007 The background constituent concentrations for all of the new monitoring wells MW-3A MW 23 MW-24 MW-25 MW-27 MW-28 MW-29 MW-30 and MW-31 through eight quarters of sampling pursuant to Part 1.11.4 of the Permit has been evaluated and reported to UDEQ under the title Background Groundwater quality Report New Wells For the Denison Mines USA Corp White Mesa Uranium Mill Site San Juan County Utah Intera 6/1/07 and its April 30 2008 Addendum The reports have been reviewed by UDEQ and an Amendment to the Permit is forthcoming which will incorporate established constituents limits for these wells on the basis of UDEQs review and Permit Amendment 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 July and September 2009 are provided at Tabs and respectively The results of the Quarter of 2009 quarterly accelerated sampling are included under Tab 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 Summary of Accelerated Monitoring Results to Date Monitoring Well Water Class Constituent GWCL ugfL Sample Event Sample Result ngTh MW-i_Class_II Tetrahydrofuran 11.5 2tlu Qtr 2005 85 4th Qtr 2005 58 Pt Qtr 2006 48 2nd Qtr 2006 60 3rd Qtr 2006 26 4thQtr 2006 16 1Qtr2007 14 2nd Qtr 2007 NA 31d Qtr 2007 15 4thQtr 2007 16 Pt Qtr 2008 2.0 Qtr 2008 2.6 3fdQtr 2008 3.2 4th Qtr 2008 1st Qtr 2009 6.4 Qtr 2009 8.4 3Qtr 2009 5.3 Manganese 200 4th Qtr 2005 215 15t Qtr 2006 220 Qtr 2006 230 31d Qtr 2006 216 4th Qtr 2006 198 1st Qtr 2007 229 2nd Qtr 2007 NA 3fdQtr 2007 30 4th Qtr 2007 15 15t Qtr 2008 10 Qtr 2008 66 3rd Qtr 2008 70 MW-i Contd Manganese 200 4th Qtr 2008 68 15t Qtr 2009 83 Qtr 2009 79 3rd Qtr 2009 84 MW-3_Class_III Thallium 1.00 Qtr 2005 1.60 4th Qtr 2005 1.14 PtQtr2006 1.13 Monitoring Well Water Class Constituent GWCL ugIL Sample Event Sample Result ugIL MW-3 eontd Thallium 1.00 2nd Qtr 2006 0.99 3fdQtr2006 1.11 4th Qtr 2006 1.16 ISt Qtr 2007 0.99 Qtr 2007 NA 3rdQtr2007 1.19 4thQtr2007 1.15 1tQtr 2008 0.90 Qtr 2008 0.86 3rd Qtr 2008 0.85 4th Qtr 2008 0.93 Pt Qtr 2009 0.89 2nd Qtr 2009 0.82 3rd Qtr 2009 0.78 Uranium 15 Qtr 2005 35.90 4th Qtr 2005 30.90 15t Qtr 2006 39.1 Qtr 2006 27.6 3rdQtr 2006 32.0 4thQtr2006 28.2 PQtr 2008 35.6 l5tQtr 2007 30.2 Qtr 2007 NA 3rd Qtr 2007 17.4 4th Qtr 2007 39.4 PtQtr 2008 35.6 Qtr 2008 ND 3tdQtr 2008 28.5 4th Qtr 2008 23.8 15t Qtr 2009 27.7 2Qtr 2009 18.6 3rd Qtr 2009 22.2 Manganese 400 4th Qtr 2005 732 1St Qtr 2006 1640 2ndQtr 2006 631 31d Qtr 2006 1370 4th Qtr 2006 682 1St Qtr 2007 848 Qtr 2007 NA 3TdQtr 2007 199 4thQtr 2007 1950 Pt Qtr 2008 1330 2ndQtr 2008 810 3rd Qtr 2008 960 4th Qtr 2008 813 Qtr 2009 468 2nd Qtr 2009 292 Manganese 400 Qtr 2009 397 2h1 Qtr 2006 3rdQt 2006 4th Qtr 2006 25.4 16.8 27.9 Monitoring Well Water Class Constituent GWCL ugIL Sample Event Sample Result ugIL MW-3 contd Selenium 25 Qtr 2007 20.1 2nd Qtr 2007 NA 3rdQtF2007 33.6 4th Qtr 2007 8.9 ltQtr2008 13.8 Qtr 2008 20.1 3IdQtr 2008 19.2 4th Qtr 2008 26.5 Qtr 2009 20.7 Qtr 2009 34.2 3rd Qtr 2009 24.5 Tetrahydrofuran 23 Qtr 2006 26 3rd Qtr 2006 46 4thQtr 2006 11 PQtr2007 11 2nd Qtr 2007 NA 3rd Qtr 2007 ND 4th Qtr 2007 ND Qtr 2008 6.5 Qtr 2008 2.0 Qtr 2008 2.0 4th Qtr 2008 2.0 Vt Qtr 2009 3.8 Qtr 2009 2.0 3rd Qtr 2009 2.0 MW-5 Class II Manganese 200 Qtr 2005 250 4th Qtr 2005 280 iQtr 2006 259 Qtr 2006 228 3rd Qtr 2006 237 4th Qtr 2006 228 VQtr 2007 281 Qtr 2007 NA 3rd Qt 2007 134 4th Qtr 2007 142 VQtr 2008 203 Qtr 2008 258 3rd Qtr 2008 298 4th Qtr 2008 230 Qtr 2009 154 Qtr 2009 249 3rd Qtr 2009 257 Fluoride 1.00 mgIL Qtr 2005 1.3 mgfL 4th Qtr 2005 1.0 mgIL Qtr 2006 0.9 mgIL Qtr 2006 1.0 mgIL 3rd Qtr 2006 0.9 mgfL 4th Qtr 2006 1.1 mgJL PQtr 2007 1.1 mgfL Qtr 2007 3rd Qtr 2007 4th Qtr 2007 NA 1.2 mg/l .0mg/L 10 Monitoring Welt Water Class Constituent GWCLuW amp yen Sample ResultWL MW-5 Contd Fluoride 1.00 mgIL Qtr 2008 .0mgtL Qtr 2008 0.9mgfL 3rd Qir 2008 .0mgfL 4th Qtr 2008 .0mgfL 1st Qtr 2009 1.0 mg/L Qtr 2009 1.0 mgfL 3rd Qtr 2009 0.9 mg/L Tetrahydrofuran 11.50 4th Qtr 2005 13 I5tQtr2006 10 Qtr 2006 7.8 3rd Qtr 2006 ND 4th Qtr 2006 ND Qtr 2007 ND 2nd Qtr 2007 NA 3rd Qtr 2007 ND 4th Qtr 2007 10 15t Qtr 2008 9.2 2nd Qtr 2008 10 3rd Qtr 2008 6.6 4th Qtr 2008 8.5 Qtr 2009 4.2 Qtr 2009 11 3rd Qtr 2009 6.2 MW-12_Class_III Manganese 400 Qtr 2005 420 4th Qtr 2005 27 l5tQtr2006 17 3rd Qtr 2006 290 4th Qtr 2006 92 Qtr 2007 279 Qtr 2007 NA 3rd Qtr 2007 57 4th Qtr 2007 60 PQtr 2008 29 Qtr 2008 32 3rdQtr 2008 19 4th Qtr 2008 16 l5tQtr.2009 17 Qtr 2009 33 3rd Qtr 2009 35 Uranium 15 Qtr 2005 15.30 Qtr 2005 16.50 15t Qtr 2006 ND Qtr 2006 20.9 3rdQtr 2006 23.5 4thQtr2006 19.8 l5tQtr 2007 19.4 Qtr 2007 NA 3rdQtr 2007 8.68 4thQtr 2007 l5tQtr2008 Qtr 2008 19.2 16.8 16.7 11 Monitoring Well Water Class Constituent GWCL ugIL Sample Event Sample Result ugIL MW-12 eontd Uranium 15 Qtr 2008 17.8 4th Qtr 2008 16.9 it Qtr 2009 1X.1 2nd Qtr 2009 16.7 3fdQtr 2009 17.2 Tetrahydrofuran 23 Qtr 2005 24 4th Qt 2005 12 1St Qtr 2006 ND Qtr 2006 16 3tdQtr 2006 18 4th Qtr 2006 ND Qtr 2007 38 Qtr 2007 NA 3rd Qtr 2007 ND 4th Qtr 2007 ND 1St Qtr 2008 2.0 Qtr 2008 3.0 3rd Qtr 2008 2.0 4th Qtr 2008 2.0 1t Qtr 2009 3.6 Qtr 2009 3.4 3rd Qtr 2009 3.2 MW-14 Class III Manganese 400 1St Qtr 2005 1860 June 2005 1840 July 2005 2000 Aug 2005 1900 Sept.2005 2110 Oct 2005 1950 Nov 2005 1880 Dec 2005 1960 Jan 2006 2060 Feb 2006 1940 Mar 2006 2070 April 2006 2100 May 2006 2000 June 2006 1650 July 2006 1590 Aug 2006 1870 Sept 2006 1860 Oct 2006 1960 Nov 2006 1790 Dec 2006 1960 Jan 2007 1970 Feb 2007 1940 Mar 2007 1930 April 2007 2020 May 2007 1940 June 2007 NA July 2007 NA Aug 2007 2010 Sept 2007 2060 Oct 2007 2120 12 Monitoring Well Water Class Constituent GWCL ugIL Sample Event Sample Result ugIL MW-14 Contd Manganese 400 Nov 2007 2380 Dec 2007 2290 Jan 2008 2200 Feb 2008 2080 Mar 2008 2280 April2008 2160 May 2008 2420 June 2008 2290 July 2008 2150 Aug 2008 2020 Sept 2008 2030 Oct.2008 2110 Nov 2008 2150 Dec 2008 2300 Jan 2009 2060 Feb.2009 2190 Mar 2009 2150 April 2009 2380 May 2009 2170 June 2009 1940 July 2009 2330 Aug 2009 2140 Sept 2009 2060 Uranium 15 Pt Qtr 2005 65.1 June2005 58.9 July 2005 65.5 Aug 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 April 2006 64.0 May 2006 70.3 June 2006 69.2 July 2006 71.8 Aug 2006 64.7 Sept 2006 69.0 Oct 2006 66.4 Nov 2006 65.5 Dec 2006 68.4 Jan 2007 24.9 Feb 2007 43.8 Mar 2007 42.8 April 2007 18.8 May 2007 62.4 June 2007 NA July 2007 NA August 2007 ND September 2007 70.5 13 Monitoring Well Water Class Constituent GWCL ugIL Sample Event Sample Result ugIL MW-14 Contd Uranium 15 October 2007 68.6 November 2007 61.6 December 21107 60.7 January 2008 65.1 February 2008 64.1 March 2008 ND April2008 61.8 May 2008 62.6 June2008 61.3 July 2008 64.8 Aug 2008 62.4 Sept 2008 63.0 Oct 2008 65.8 Nov 2008 63.4 Dec 2008 48.3 Jan 2009 68.9 Feb 2009 60.5 Mar 2009 57.4 April 2009 62.0 May 2009 60.5 June 2009 63.4 July 2009 70.1 Aug 2009 61.7 Sept 2009 60.1 MW-15 Class III Selenium 25 2n Qtr 2005 79 4thQtr 2005 92.5 1tQtr 2006 102 Qtr 2006 117 3rd Qtr 2006 112 4thQtr2006 112 PtQtr 2007 89.6 Qtr 2007 NA 3rd Qtr 2007 94 4th Qtr 2007 94 PtQtr2008 113 Qtr 2008 106 3rd Qtr 2008 118 4th Qtr 2008 111 PtQtr2009 110 Qtr 2009 110 3rdQtr 2009 142 Uranium 15 2nd Qtr 2005 45.3 4th Qtr 2005 47.7 Pt Qtr 2006 50.4 2nd Qtr 2006 47.8 3tdQtr 2006 50.1 4thQtr 2006 51.6 Pt Qtr 2007 46.5 Qtr 2007 NA 3IdQtr 2007 4thQtr 2007 Pt Qtr 2008 28.6 51.0 48.3 14 Monitoring Well Water Class Constituent GWCL ugfL Sample Event Sample Result ugIL MW-iS contd Uranium 15 2nd Qtr 2008 43.9 3Fd Qtr 2008 45.7 4thQtr 2008 47.1 151 Qtr 2009 45.7 Qtr 2009 45.6 3rd Qtr 2009 44.9 MW-17_Class_III Uranium 15 2nd Qtr 2005 23.4 4thQtr 2005 31.2 Pt Qtr 2006 28.2 2nt Qtr 2006 32.2 3rdQtr 2006 30.6 4th Qtr 2006 30.2 1st Qtr 2007 23.4 2Qtr 2007 18.2 3fdQtr 2007 20.1 4th Qtr 2007 31.0 1Qtr2008 28.3 Qtr 2008 29.4 3rd Qtr 2008 28.9 4th Qtr 2008 26.0 lStQtr 2009 28.7 2l Qtr 2009 26.4 31d Qtr 2009 27.8 Thallium 1.0 pt Qtr 2009 0.57 Qtr 2009 0.69 3rdQt 2009 0.71 MW-18 Class II Thallium 0.5 2td Qtr 2005 1.0 4th Qtr 2005 0.95 Pt Qtr 2006 1.46 2R Qtr 2006 1.3 3rdQtr 2006 0.83 4thQtr 2006 1.01 1Qtr 2007 1.85 Qtr 2007 NA 3rdQtr 2007 0.96 4th Qtr 2007 0.89 1Qtr2008 1.11 2Qtr 2008 1.34 3rd Qtr 2008 1.33 4th Qtr 2008 1.43 l5tQtr2009 1.53 Qtr 2009 2.5 3rd Qtr 2009 2.62 MW-is Class II Uranium Qtr 2005 39 4th Qtr 2005 39 15t Qtr 2006 42.6 2Qtr 2006 32.2 3rd Qtr 2006 39.6 4th Qtr 2006 151 Qtr 2007 Qtr 2007 42.2 46.9 NA 15 Monitoring Well Water Class Constituent GWCL ugfL Sample Event Sample Result gfL MW-18 contd Uranium 3d Qtr 2007 36.5 4thQtr 2007 39.2 Pt Qtr 200 42.4 Qtr 2008 44.8 3rd Qtr 2008 41.4 4th Qtr 2008 41.0 15t Qtr 2009 39.4 2nt Qtr 2009 41.2 3fdQft2009 41.6 Manganese 200 1st Qtr 2008 154 Qtr 2008 119 3tdQtr 2008 136 4th Qtr 2008 125 ltQtr2009 121 2n Qtr 2009 72 3rd Qtr 2009 104 MW-19 Class II Fluoride 1.0 mg/L 4th Qtr 2005 1.1 mgIL Qtr 2006 1.1 mgfL 3rd Qtr 2006 1.1 mgfL 4th Qtr 2006 1.3 mgIL 1st Qtr 2007 1.4 mg/L Qtr 2007 NA 3rd Qtr 2007 .3mgfL 4th Qtr 2007 1.1 mg/L l5tQtr2008 1.1mg/L Qtr 2008 1.1 mg/L 3rd Qtr 2008 1.1 mg/L 4th Qtr 2008 1.1mgfL l5tQtr2009 1.1mgfL Qtr 2009 .0mgfL 3rd Qtr 2009 1.0 Selenium 12.5 Qtr 2005 18 4thQt 2005 12.3 15t Qtr 2006 14.3 2Qtr 2006 12.0 3rd Qtr 2006 12.0 4thQtr 2006 11.2 l5tQtr2007 11.1 2ttd Qtr 2007 NA 3rdQtr 2007 11.9 4th Qtr 2007 10.8 15t Qtr 2008 10.6 Qtr 2008 10.2 3td Qtr 2008 9.2 12.5 4th Qtr 2008 9.9 15t Qtr 2009 9.6 Qtr 2009 10.7 3rd Qtr 2009 9.1 Thallium 0.5 4th Qtr 2005 0.57 1St Qtr 2006 Qtr 2006 3rd Qtr 2006 ND 0.7 0.55 16 Monitoring Well Water Class Constituent GWCL ugIL Sample Event Sample Result ugIL MW-19 contd Thallium 0.5 4th Qtr 2006 0.68 Pt Qtr 2007 ND 2ut Qtr 2007 NA 3rd Qtr 2007 0.53 4th Qtr 2007 0.52 PtQtr 2008 0.52 Qtr 2008 ND 3rd Qtr 2008 ND 4th Qtr 2008 ND Pt Qtr 2009 ND 2u Qtr 2009 ND 3rd Qtr 2009 ND Uranium 2nt Qtr 2005 11.6 4th Qt 2005 11.3 Pt Qtr 2006 12.8 Qtr 2006 11.5 3rdQtr 2006 8.52 4th Qt 2006 10.1 1t Qtr 2007 9.37 2s Qtr 2007 NA 3rdQtr 2007 7.76 4th Qtr 2007 7.53 1Qtr 2008 7.32 Qtr 2008 6.76 3rdQtr 2008 6.8 4th Qtr 2008 6.51 1t Qtr 2009 6.52 2nd Qtr 2009 6.76 3rd Qtr 2009 6.46 Nitrate-Nitrite as 2.5 Qtr 2009 2.4 2nd Qtr 2009 2.4 3rdQtr 2009 2.2 MW-26_Class_II Manganese 400 Pt Qtr 2005 1350 June 2005 956 July2005 1100 Aug.2005 1430 Sept 2005 1160 Oct 2005 1410 Nov 2005 949 Dec 2005 1030 Jan 2006 951 Feb 2006 874 Mar 2006 1210 April2006 1100 May2006 1280 June 2006 1300 July 2006 95 Aug 2006 902 Sept.2006 1330 Oct 2006 1610 Nov 2006 1500 17 Monitoring Well Water Class Constituent GWCL ug/L Sample Event Sample Result ug/L MW-26 contd Manganese 400 Dec 2006 1080 Jan 2007 769 Feb.2007 979 Mar.2007 1130 April 2007 1410 May 2007 910 June 2007 1230 July 2007 1280 Aug 2007 728 Sept 2007 NS Oct 2007 1190 Nov.2007 1150 Dec.2007 1410 January 2008 853 February 2008 1330 March2008 1390 April 2008 1010 May2008 1170 June2008 1130 July2008 1110 Aug.2008 1180 Sept.2008 1140 Oct 2008 1550 Nov 2008 1260 Dec 2008 1120 Jan 2009 1040 Feb.2009 1370 Mar 2009 1600 April 2009 1260 May 2009 1120 June 2009 1190 July 2009 1.160 Aug 2009 1530 Sept 2009 1500 Uranium 15 Qtr 2005 22.4 June 2005 9.5 July 2005 12.6 Aug 2005 26.0 Sept 2005 17.4 Oct 2005 22.7 Nov.2005 12.1 Dec.2005 12.3 Jan 2006 10.7 Feb 2006 9.9 Mar 2006 17.9 April 2006 14 May 2006 2.5 June 2006 24.6 July2006 17.6 Aug 2006 10.5 Sept 2006 23.0 Oct 2006 34.7 18 Monitoring Welt Water Class Constituent GWCL ugfL Sample Event Sample Result ngfL MW-26 Contd Uranium 15 Nov 2006 32.6 Dec 2006 20.9 Jan 2007 22.6 Feb.2007 44.2 Mar 2007 42.8 April 2007 36.4 May 2007 119 June 2007 24.5 July 2007 38.6 August 2007 21.2 September 2007 NS October 2007 47.0 November 2007 42.0 December 2007 47.6 January 2008 20.1 February 2008 59.2 March 2008 46.3 April 2008 17.2 May 2008 20.7 June2008 21.7 July 2008 23.4 Aug.2008 27.1 Sept 2008 29.4 Oct 2008 60.4 Nov 2008 54.0 Dec 2008 62.1 Jan 2009 52.6 Feb 2009 43.0 Mar 2009 58.3 April 2009 27.4 May 2009 32.1 June 2009 54.3 July 2009 28.4 Aug 2009 58.3 Sept 2009 72.5 Chloroform 35 1st Qtr 2005 230 June 2005 430 July2005 260 Aug 2005 780 Sept 2005 810 Oct 2005 960 Nov 2005 1100 Dec 2005 1200 Jan.2006 1300 Feb 2006 860 Mar 2006 1200 April 2006 1200 May2006 1100 June 2006 260 July2006 7800 Aug 2006 980 Sept 2006 1200 19 Monitoring Well Water Class Constituent GWCL ugIL Sample Event Sample Result ugfL MW-26 Contd Chloroform 35 Oct 2006 1400 Nov 2006 950 Dec 2006 1100 Jan 2007 5700 Feb.2007 4400 Mar 2007 1600 April 2007 2100 May 2007 2400 June 2007 660 July2007 1100 August 2007 920 September 2007 NS October 2007 820 November 2007 1400 December 2007 1400 January 2008 830 February 2008 580 March 2008 1300 April 2008 1600 May2008 1200 June 2008 2000 July 2008 1600 Aug.2008 1300 Sept 2008 460 Oct 2008 630 Nov 2008 950 Dec 2008 1300 Jan 2009 1200 Feb 2009 1600 Mar 2009 1200 April 2009 820 May 2009 2600 June 2009 1400 July 2009 700 Aug 2009 1200 Sept 2009 2800 Dichloromethane 2.5 June 2005 5.4 Aug.2005 11.0 Sept 2005 5.9 Oct 2005 9.8 Nov 2005 7.6 Dec.2005 12 Jan 2006 6.9 Feb 2006 4.8 Mar 2006 4.6 April 2006 14 May 2006 11 June 2006 2.5 July 2006 ND Aug 2006 12 Sept 2006 25 Oct 2006 31 20 Monitoring Well Water Class Constituent GWCL ugfL Sample Event Sample Result ugIL MW-26 Contd Dichioromethane 2.5 Nov 2006 15 Dec 2006 2.6 Jan 2017 ND Feb.2007 25 Mar 2007 26 April 2007 33 May 2007 28 June 2007 37 July2007 14 August 2007 9.0 September 2007 NS October 2007 1.2 November 2007 18 December 2007 22 January 2008 15 February 2008 15 March 2008 66 April 2008 47 May 2008 33 June2008 110 July2008 82 Aug 2008 84 Sept 2008 11 Oct 2008 9.4 Nov 2008 17 Dec 2008 60 Jan 2009 69 Feb 2009 89 Mar 2009 37 April 2009 33 May 2009 47 June 2009 54 July 2009 16 Aug 2009 23 Sept 2009 22 Tetrahydrofuran 23 4th Qtr 2005 55 Jan 2006 ND Feb 2006 ND Mar 2006 ND April 2006 ND May 2006 ND June 2006 ND July 2006 ND Aug 2006 ND Sept 2006 ND Oct 2006 ND Nov 2006 ND Dec 2006 ND Jan 2007 ND Feb.2007 ND Mar 2007 ND April 2007 ND 21 Monitoring Well Water Class Constituent GWCL ugIL Sample Event Sample Result ugIL MW-26 Contd Tetrahydrofuran 23 May 2007 ND June 2007 ND July 2007 ND August 2007 ND September 2007 NS October 2007 ND November 2007 ND December 2007 ND MW-32 Cadmium 2.5 1st Qtr 2005 23.8 June 2005 1.7 July2005 2.1 Aug 2005 2.75 Sept 2005 2.95 Oct.2005 2.16 Nov 2005 2.07 Dec.2005 1.0 Jan.2006 1.14 Feb 2006 2.32 Mar 2006 2.58 April 2006 2.96 May 2006 1.84 June 2006 0.8 July 2006 3.0 Aug.2006 1.44 Sept 2006 0.96 Oct 2006 ND Nov 2006 0.9 Dec 2006 1.44 Jan 2007 3.0 Feb.2007 ND Mar 2007 2.42 April 2007 2.24 May 2007 6.18 June 2007 ND July 2007 2.83 August 2007 1.82 September 2007 1.18 October 2007 1.20 November 2007 1.47 December 2007 1.81 January 2008 1.32 February 2008 ND March 2008 1.90 April 2008 3.0 May 2008 2.08 June2008 2.21 July 2008 2.4 Aug 2008 2.77 Sept 2008 2.45 Oct 2008 2.53 Nov 2008 2.86 Dec 2008 2.61 22 Monitoring Welt Water Class Constituent GWCL ugIL Sample Event Sample Result ugIL MW-32 Contd Cadmium 2.5 Jan 2009 2.64 Feb 2009 2.98 Mar 2009 3.0 April 2009 2.9 May 2009 2.98 June 2009 2.6 July 2009 2.69 Aug 2009 2.79 Sept 2009 2.73 Manganese 400 1st Qtr 2005 3740 June 2005 4220 July 2005 4720 Aug 2005 4670 Sept 2005 4580 Oct 2005 4590 Nov 2005 4530 Dec 2005 4340 Jan 2006 5090 Feb.2006 4160 Mar 2006 5090 April 2006 5070 May 2006 4840 June 2006 4680 July 2006 4540 Aug 2006 5160 Sept 2006 4690 Oct 2006 4790 Nov 2006 4830 Dec 2006 4920 Jan 2007 5040 Feb.2007 4940 Mar 2007 4920 April 2007 5450 May 2007 4920 June 2007 5470 July2007 5490 August 2007 4820 September 2007 4790 October 2007 5170 November 2007 5583 December 2007 5050 January 2008 4950 February 2008 5010 March 2008 5660 April 2008 5500 May2008 5810 June 2008 5400 July2008 5160 Aug 2008 5240 Sept 2008 5130 Oct 2008 5550 Nov 2008 5390 23 Monitoring Well Water Class Constituent GWCL ugfL Sample Result Sample Event ugIL MW-32 Coatd Manganese 400 Dec 2008 5540 Jan 2009 4850 Feb.2009 5170 Mar 2009 5140 April 2009 6180 May 2009 4640 June 2009 5120 July 2009 5450 Aug 2009 5060 Sept 2009 5040 Nickel 50 Qtr 2005 71.0 June 2005 54.0 July2005 63.0 Aug 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 May 2006 64.0 June 2006 52 July 2006 74 Aug 2006 59 Sept 2006 53 Oct 2006 12 Nov 2006 56 Dec 2006 62 Jan 2007 59 Feb.2007 51 Mar 2007 74 April 2007 64 May 2007 127 June 2007 94 July 2007 85 August 2007 65 September 2007 62 October 2007 67 November 2007 57 December 2007 66 January 2008 62 February 2008 59 March 2008 59 April2008 61 May 2008 64 June 2008 62 July 2008 65 Aug 2008 66 Sept 2008 60 ___________________Oct 2008 62 24 Monitoring Well Water Class Constituent GWCL ugIL Sample Event Sample Result ugfL MW-32 Contd Nickel 50 Nov 2008 66 Dec 2008 59 Jan 2009 58 Feb 2009 63 Mar 2009 64 April 2009 62 May 2009 57 June 2009 59 July 2009 56 Aug 2009 58 Sept 2009 54 Iron 5500 Jan 2009 9130 Feb 2009 9180 Mar 2009 8450 April 2009 8250 May 2009 7600 June 2009 5120 July 2009 8220 Aug 2009 8220 Sept 2009 7990 Gross Alpha Jan 2009 5.2 1-1.0 Feb 2009 5.5 1-0.7 Mar 2009 5.0 1-0.7 April 2009 2.0 1-0.8 May 2009 1.6 1-0.5 June 2009 3.2-0.8 July 2009 7.9 1-1.1 Aug 2009 6.7 1- Sept 2009 4.2 1-0.8 2.5 Depth To Groundwater Readings And Water Table Contour Map listing of groundwater level readings for the Quarter shown as depth to groundwater in feet is included under Tab Also included under Tab is water table contour map which provides the location and identity of all of the wells and piezometers listed in items 2.1b 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 Quarters sampling event is displayed on the map 25 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 July Monthly Accelerated Sampling -One duplicate sample of MW-32 MW-65 collected 7-29-09 -One field blank MW-60 collected 7-29-09 -One trip blank provided by the Analytical Laboratory and sent with the samples received by the Analytical Laboratory on 7-31-09 Sept Monthly Accelerated Sampling -One duplicate sample of MW-32 MW-65 collected 9-9-09 -One trip blank provided by the Analytical Laboratory and sent with the samples received by the Analytical Laboratory on 9-11-09 August Quarterly/Accelerated Sampling Two duplicate samples MW-32 MW-65 collected 8-11 8-19-09 MW-22 MW-70 collected 8-26 8-30-09 Four trip blanks provided by the Analytical Laboratory and sent with the samples received by the Analytical Laboratory on 8-20 8-2 8-27 and 9-1-09 These QC samples were sent blind to the Analytical Laboratory and analyzed for the same parameters as permit-required samples 2.6.2 Field Data Sheet Review In response to program improvement needs the QA Manager has initiated documented review of field recorded parameters and their adherence with Quality Assurance Plan requirements with regard to well purging volumes and stability of parameters Accodingly the results of that review are provided in the Table Below 26 Table QA Review of Purging Parameters Well Location 2x Casings Mm Rqd Wn Pumped Amount Sufficient Y/N Conductance RPD pH Temp RPD Redox Potential RPD ye TI T2 Ti T2 Ti T2 Ti T2 MW 115 115 YT 1875 1871 0.2 7.07 7.09 0.3 14.62 14.73 0.7 426 432 1.4 MW 30 30 5942 5920 0.4 6.28 6.25 0.5 15.27 15.56 1.9 318 312 1.9 3AWL 29 29 5924 5851 1.2 6.30 6.31 0.2 14.84 14.61 1.6 531 543 2.2 3AAWL 38 38 6193 6180 0.2 15.81 16.04 -1.4 334 334 0.0 MW-S 125 125 2945 2944 0.0 7.41 7.4 0.1 15.07 15.43 2.4 135 167 21.2 5AWL 125 120 2952 2955 0.1 7.58 7.59 -0.1 15.87 18.82 17.0 55 60 8.7 MW-il 156 120 2848 2872 -0.8 7.82 7.83 0.1 15.06 15.16 -0.7 128 116 9.8 MW ii 155 120 2829 2832 0.1 7.85 7.87 -0.3 15.11 15.13 0.1 337 267 23.2 HAWL 155 120 2837 2870 1.2 7.75 7.67 1.0 15.46 15.61 -1.0 68 47 36.5 MW-12 86 86 YT 4207 4203 0.1 6.59 6.63 -0.6 14.92 15.31 -2.6 338 316 6.7 12AWL 8o 8o YT 4300 4294 0.1 o.59 o.oI 0.3 14.70 14.79 0.o 535 Sb 3.o MW-14 98 98 4078 4062 0.4 6.55 6.56 0.2 i4.92 15.11 1.3 314 307 2.3 14AWL 97 97 4070 4048 0.5 6.25 6.40 2.4 14.91 14.92 0.1 308 299 3.0 MW-is 120 120 4452 4437 0.3 6.61 6.66 0.8 15.29 15.32 -0.2 324 320 1.2 ISAWL 120 120 4438 4442 0.1 6.61 6.71 1.5 15.39 15.86 3.0 281 283 0.7 MW-17 138 120 4615 4682 -1.4 6.64 6.53 1.7 14.70 14.87 1.1 278 289 3.9 MW 18 MW 19 247 386 120 120 3584 135i 3600 1341 -0.4 0.7 6.39 7.01 6.37 7.0 0.3 0.1 i4.52 14.62 14.55 14.71 0.2 0.6 201 599 231 522 13.9 13.7 2OAWL 26 26 7088 7095 -0.1 7.22 7.18 0.6 16.46 16.82 2.2 471 469 0.4 MW-20 19 19 7184 7161 0.3 7.17 7.21 -116 18.46 19.45 5.2 451 444 1.6 MW-22 183 120 7130 7153 0.3 5.64 5.69 t19 15.24 15.22 0.1 408 431 5.5 22AWL i84 120 7356 7345 0.1 5.57 5.6 0.7 15.13 15.24 0.7 489 458 6.5 23AWL 71 71 4UU3 4u24 U.S o.54 o.33 3.3 15.71 10.91 7.4 312 307 In MW 24 20 20 PMP 4849 4794 1.1 6.59 6.41 2.8 20.25 20.99 -3.6 203 205 1.0 24AWL 20 20 4849 4805 0.9 6.59 6.52 1.1 20.10 20.29 0.9 137 170 21.5 MW-25 154 120 NT 3326 3327 0.0 6.52 6.52 0.0 15.08 14.88 1.3 44 450 2.0 25AWL 153 120 NT 3320 3322 0.1 6.6 6.6 110 14.8 14.94 0.9 232 237 -2.1 MW-26 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 26AWL NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 27AWL 172 120 16 1609 0.1 7.16 7.14 0.3 15.58 15.55 0.2 332 332 0.0 28AWL 127 120 NT 4097 4097 0.0 5.91 5.9 110 15.37 15.51 0.9 323 324 0.3 MW 29 94 94 4860 4065 17.8 6.3 6.32 0.3 15.25 15.13 0.8 232 217 6.7 29AWL 95 95 YT 4837 4837 0.0 6.25 6.28 -05 15.22 15.20 0.1 146 14 3.5 MW-30 128 120 2128 2135 -0.3 6.89 6.88 0.1 14.81 14.95 0.9 348 336 3.5 3OAW 128 120 2150 2166 0.7 6.76 6.78 -03 14.96 14.96 0.0 275 276 0.4 MW-31 237 120 1822 1823 -0 7.17 7.18 0.1 15.3 15.35 0.3 478 480 0.4 3AWL 237 120 1810 182 0.6 7.31 7.34 -0.4 15.73 15.25 254 270 MW32 219 120 4173 4171 0.0 6.17 6.16 0.2 14.95 14.95 0.0 166 159 4.3 32AWL 218 120 4180 4157 0.6 6.09 -112 14.98 15.20 1.5 159 160 -0.6 Note The designation indicates that turbidity was either above NTU or faiied for duplicate measurements beyond f-iO%RPD Based upon this review 23 locations did not conform with QAP requirements either because casing volumes were not evacuated field parameters were outside of 10%RPD or turbidity exceeded NTU These issues are addressed further in Section 2.6.3.d below 2.6.3 Analytical Laboratory OA/QC 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 27 of the Mills Chain of Custody and Analytical Request Record forms for each set of Analytical Results follow the analytical results under Tabs to 2.6.3 Mill OA Manager Review The Mill QA Manager which for the purposes of this Report was DUSAs Manager of Environmental Affairs performed three types of reviews determination of whether Mill sampling personnel followed Mill sampling procedures review of the results from the Field QC Checks and review of the Analytical Laboratory QAIQC analysis The results of the QA Managers review are discussed below Adherence to Mill Sampling SOPs On review of adherence by Mill personnel to the existing sampling standard operating procedures SOPs the QA Manager observed that QAIQC requirements established in the Groundwater Monitoring Quality Assurance Plan were adhered to except as noted below Results from field QC checks July Sampling The results of duplicate QC checks for the July sampling indicated that the duplicated samples were within the Relative Percent Difference goal of 20%see Table The information from the Laboratory QAIQC Summary Report indicates that RPD and recovery data at the Laboratory were within acceptable laboratory guidance with the exception of one naphthalene matrix spike RPD value All samples were received within acceptable temperature specification and holding time requirements were adhered to The trip blank did not indicate contamination due to sample handling The only qualification attached to these data was for surrogate xylene which was slightly out side of the recovery guideline Table 4-QC Evaluation July Sampling Event Constituent Duplicate Evaluation MW-32 Dup MW-65 RPD Cadmium 2.69 2.71 -0.49 Iron 8220 7960 2.13 Manganese 5450 5550 -1.22 Nickel 56 56 0.00 Gross Alpha 7.9 1-1.1 6.2 1-1.0 ii September Sampling The results of duplicate QC checks for the March sampling indicated that the duplicated samples were within the Relative Percent Difference goal of 20%see Table The information from the Laboratory QA/QC Summary Report indicates that RPD and recovery data at the Laboratory were within acceptable limits with the exception of one acetone and one MEK recovery value 28 of Laboratory Control Sample which exceed laboratory guidance limits All samples were received within acceptable temperature specification and holding time requirements were adhered to The trip blank did not indicate contamination due to sample handling as well There were no qualifications attached to these data by the laboratory Table 5-QC Evaluation August Sampling Event Constituent Duplicate Evaluation MW-32 Dup MW-65 RPD Cadmium 2.73 2.80 -1.69 Iron 7990 8090 -0.83 Manganese 5040 5120 -1.05 Nickel 54 59 -5.99 Gross Alpha 4.2 1-0.8 3.3 1-0.7 iii August Quarterly/Accelerated Sampling The results of duplicate QC checks for the quarterly sampling indicated that with the exception of one anomaly Chloride in MW-32 vs MW-65 RPD28.57%the Relative Percent Difference RPD values were within the 20%acceptance limit The duplicate RPD values continue as marked improvement over previous periods during 2008 i.e 1st Quarter data indicated 11 instances where the RPD value exceeded 20%In addition all sample sets sent to Energy Labs and AWAL were received within the current limit for acceptance and holding times were adhered to Denison continues to investigate the trace chloroform found in DI Blanks albeit DI rinse water is no longer used in the Groundwater Sampling Program as dedicated pumps have been in use and equipment rinsing between samplings is no longer needed All trip blanks indicate less than detect for chloroform thus confirming that field activities do not contribute to chloroform in the samples collected 29 Table 6-QC Evaluation 1st Quarter 2009 Sampling Event Constituent MW-32 MW-65 %RPD MW-22 MW-70 %RPD Carbonate ND ND ND ND Bicarbonate 420 421 -0.16 501 4Q3 1.07 Calcium 492 485 0.95 454 454 Chloride 48 30 28.57 62 58 4.40 Fluoride 0.2 0.2 0.00 2.8 3.0 -4.65 Magnesium 173 182 3.41 963 947 1.11 Nitrogen-Ammonia 0.82 0.9 -6.30 0.72 0.94 -18.49 Nitrogen-Nitrate ND ND 3.4 3.6 -3.85 Potassium 12.2 12.3 -0.54 24.5 23.8 1.92 Sodium 218 216 0.61 243 241 0.55 Sulfate 1950 1980 1.02 5380 5260 1.50 Lab pH 6.91 6.89 0.19 7.04 6.36 6.65 TDS 3680 3590 1.64 7430 7610 -1.60 Arsenic ND ND ND ND Beryllium ND ND 2.31 2.1 6.25 Cadmium 2.79 2.76 0.72 87.3 85.9 1.07 Chromium ND ND ND ND Cobalt 48 47 1.40 283 283 0.00 Copper ND ND ND ND Iron 8220 7980 1.97 ND ND Lead ND ND ND ND Manganese 5060 4990 0.93 32200 32100 0.21 Mercury ND ND ND ND Molybdenum 11 11 587 578 1.03 Nickel 58 58 t4t 141 Selenium ND ND 10.8 10.5 1.87 Silver ND ND ND ND Thallium ND ND 1.22 1.18 2.21 Tin ND ND ND ND Uranium 2.35 2.29 1.72 51.7 51.6 0.13 Vanadium ND ND ND ND Zinc 131 132 -0.51 501 500 0.13 Gross Alpha 6.7 1-1.0 7.1 1-1.0 3.0 1-0.9 3.4 1-0.9 Acetone ND ND ND ND Benzene ND ND ND ND Carbon tetrachloride ND ND ND ND Chloroform ND ND ND ND Chloromethane ND ND ND ND MEK ND ND ND ND Methylene Chloride ND ND ND ND Naphthalene ND ND ND ND Tetrahydrofuran ND ND ND ND Toluene ND ND ND ND Xylenes ND ND ND ND RPD Equation for Gross Alpha Satisfied if differential analysis of reported values and counting error is RPD not calculable due to one value reported at less than the detection limit Review of Analytical Laboratory QAJQC Analysis The QA Manager reviewed the Analytical Laboratorys QA/QC Summary Reports and made the following conclusions 30 Check samples were analyzed for all methods used in analyzing the groundwater samples These methods were Table Analytical Methods Utilized Parameter Method Carbonate as C03 Bicarbonate as HCO3 A2320 Calcium magnesium potassium sodium iron E200.7 Chloride A4500-CI Fluoride A4500-F Nitrogen Ammonia as A4500-NH3 Nitrogen Nitrate Nitrite as E353.2 Sulfate A4500-S04 TDS A2540 Metals other than iron E200.8 Gross Alpha E900 VOCs SW8260B ii The check samples included at least the following method blank laboratory control spike matrix spike and matrix spike duplicate or the equivalent where applicable In this context it should be noted that 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 For method E900 used to determine gross alpha sample duplicate was used instead of matrix spike duplicate iii All qualifiers and the corresponding explanations reported in the QA/QC Summary Reports for any of the check samples for any of the analytical methods were reviewed by the QA Manager With regard to laboratory qualifiers there were some instances where reporting limit RL was increased due to matrix interference however in these cases the reported value was well above the re-established RL Also surrogate xylene compound spike recovery was slightly outside of the laboratory guidance limit vi The information from the Laboratory QAIQC Summary Reports indicate that RPD at the Laboratory were primarliy within acceptable limits However there were instances where spike recovery and RPD data fell slightly outside of the stated limits for benzene chloromethane napthalene toluene and nitrate 31 Corrective Actions De-ionized Water Trace Contaminants During the 3rd Quarter 2008 report period it was noted that field blank de-ionized water continued to yield trace volatile organic presence i.e Chloroform This matter was further investigated by the QA manager and corrective measures included confirmation that purchased de-ionized water had in fact been used for the field blank and two sets of purchased de-ionized waters samples were prepared and duplicate sets were sent to each of two contract laboratories Energy Lab and AWAL Both Labs continued to report the presence of low concentration Chloroform in all of the purchased water samples e.g approximatel 30 ppb Concurrently these low concentrations of Chloroform were found in the 4t Quarter 2009 field blanks as well During the QA review for the preparation of the 4thi Quarter Report it was discovered that in fact what was purchased is the resin used to treat the water and not the water itself Accordingly samples of pretreated water treated water and the field blanks themselves were planned for analysis in order to further isolate the cause of this low level contaminant source Field blanks were collected during the 2nd Quarter and the matter was discussed at length with onsite laboratory personnel however the samplings for pre and post treatment DI water continue to show trace chloroform concentrations The laboratory and RSO continue to investigate and an update of those findings will be provided in the 4th Quarter Report The matter of Chloroform presence in DI water is no longer an issue for the Groundwater program as the site uses dedicated pumps for Groundwater sampling and DI water is no longer used to clean Groundwater sampling equipment However the matter continues to be investigated as DI water may be used in other programs ii Contemporaneous Water Level Measurements Water level measurements were not taken contemporaneously within 5-day period according to the QAP for the first Quarter root cause analysis of this matter was reported to the Executive Secretary on May 22 2009 This matter has been addressed and all water levels were recorded on the same day for this reporting period iii Well Purging and Stable Field Parameters Identification and definition of the problem The problem identified is the failure to evacuate casing volumes during purging operations failure to measure at least field paramater data sets within 1-10% and turbidity beyond NTU in collected samples Assignment of responsibility for investigating the problem The problem is being investigated by the QA Manager 32 Investigation and determination of cause of the problem Sampling personnel believed that wells should be pumped to casing volumes or stable field parameters However subsequent to this reporting period and in recent discussions with UDEQ on October 29 2009 it became apparent that the both criteria must be met Determination of corrective action to eliminate the problem Sampling personnel have been informed that the procedures outlined in the QAP for well purging with regard to evacuation of casing volumes and at least sets of field parameters within 10%RPD must be adhered to Sampling personnel have been informed that turbidity measurements are required for all samples collected and that samples must fall below NTU for sampling Assigning and accepting responsibility for implementing the corrective action It will be the responsibility of the RSO and sampling technicians to implement the corrective action Implementing the corrective action and evaluating its effectiveness Implementation of the corrective action has occurred by means of the notification cited under item above Verifying that the corrective action has eliminated the problem Verification that the corrective action has eliminated the problem will occur subsequent to the receipt of sample results for the 4th Quarter sampling event 33 2.7 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 copy of the transmittal e-mail is included under Tab 3.0 SIGNATURE AND CERTIFICATION This document was prepared by Denison Mines USA Corp on November 30 2009 DENISON By David Frydenlund Vice President Regulatory Affairs and Counsel USA CORP 34 Certification certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with system designed to assure that qualified personnel properly gather and evaluate the information submitted Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information the information submitted is to the best of my knowledge and belief true accurate and complete am aware that there are significant penalties for submitting false information includi the ssibility of fine and imprisonment for knowing violations Da Fr enlund Vice President Regulatory Affairs and Counsel Denison Mines USA Corp 35 TabA Di ft E1 UI UI UI Ui TabB Mill Gotmdlwater Discharge PetS Ciotitdwater Monitwiag Qvallity Assurance Plan QAJP WJ1I1ITh 1MlSA UMANIRIJM MULL F1IID DATA WORXSJBIIEET GROUND WAT1R Desciiption of Sampling Evcnt2/va4er rrou4 .3.kd Sampler Location well name M\Name and initials ltmcr 14011 aC%Ll Date awl Time for Purging _4/JaS/CYt and Sampling if different -a Well Purging Equip Usedi ipwtp or.....bailer Well Pump if other than Berinet FE fl Sampling Event___________________Prey Well Sampled in Sampling Event MU to pilBuffertO gp Specific Conductance gg uMJOSIcm Well Depth ii Depth to Water Before Pinging fl21i%Casing Volume Well wr .653k 3WeH tg.367h Condtictanceavg 707 Well Water Temp avg R-Ll aiiiei 3i rnj 33 Weather Cowl Extl Amb Temp.piinrto sampling event S2 tine m6 .1 thLPigged .3 QaLFurged J.t5 CondUctajicØ 40 Conductance 373 ______________7.O-.pg Temperature y-4t Redox PotentialEh 278 Tuibidity Temperatur Redox Potential Bk 3255 Turbidity Conductance Xl pH Temper 7QC\ ature .73 Date 225.07 Revision Page 40 of 41 AflACIHIMJENT ii pH Buffer 7.O Conductance Uc 75 7.01 Time KDo Gal Purged 4a Time IQ3 Gal.Purged t9 GS Temneratum Ga Redox Potential EM 42k Redox Potential Bk fl Mill CkoiswatezDiscSge PcSi GrouSwaterMothtorkig Qanlity AaswaacoPS QAP The 11.17116 JRevisieii Fage4I of 41 Volmne of Water Pwpd fluupjua Rate Calculation Flow Rate in gpm S160 _____ Thue to evacuate two casing vohunes 2V T2V/QJ1FMA Number of casing volumes evacuated if other than two If well evacuated to dryness number of gallons evacuatod Monte of Certified Analytical Labontory it Other Than Hnergy Lobs cars MDe of Sotnvp SS4 Taken elSe SieVohum hidjiiSifOJhif thSgksiiclfted Mfttered chile tsA C\OCs PreservaUva Added cIrcle lfOCs Nutrients HeavyMetals All Other Non- t-N i4tiar boll 2591h1 Oml lIft TN RHO3 t.N ThPteSvativAdded Radiologics imssAlpba 1000nd 112S04 Other specify Sample volume It pmservative is used SpcclfyTypand Quantity of Preservative Connuents Arrucj.c.\-irs 1k01tA prtses for g\4 ecinln turnk bcr flUb its Rre ak 13SS Scncs ct.1 ria TL c4hd ft4l4 aaAszrd Mill GiathvaCer Discharge Permit Date 2.25.07 Mevisioa Urcuedwater Mothtoriog Quality Msumnce Plan QAP Page 40 of 41 AflACIHIIt4IIENT ii fllImMESA UMAt3ilUM MILL FKIEW DATA WOllKS1HllEET FOR GROUID WATIER Uescripaion of Sampling Event l6\Qio.c4er Crrotni.v..ihJ-r Sampler Locthomwellwwae Mv Nameandinitiafs knnc.r floUctjs rnfl DateandTisneforPurghig /Kc/o and Sampling if differenQ fl Well Putting Equip Used j.purnp or_bailer Well Pump if other than Bennet fl Sampling Event oao4crI Prey Well Sampled in Sampling Event t3 3/F plBuffer7.0 1.0 pHBuffer4.O Specific Conductance 21 LuMROS/crn Well Depth 17 Depth to Water Before Purging 35 Casing Volume Well jp .653h 3t1 Well .36Th Conduthnce avg tR74 jifl 4ater avg 2.C Well Water Temp avg .40 Rj$th1 Turbidity Weather Cond._________________Thttl Auth Temp.prirto ilinflvent Ji Tune flOS dalrurged US Titne liLt Gal Purged Li9 CondÆciance 20S4 Conductance S180 pH L-3 pill..CDSH Temperature IS Temperature___________ Redox Potenlial Eh___________Redox Potential Eh 2D-.S Turbidity___________________Turbidity Time D20 Gal Purge oh Time Gal Purged p35 Conductance pH Temperature 51 RedoxPotentialEh 5i5s Conductance 31 PH Temperature LS ltedoxPotentialEh .4Lit Mill Gkcu dwatezDisclwige Peamilt Thge ll.I7JPS ktevwaon odwaterllonftoSg Quality Assucance Pica QAP Page 41 of 4ff Vohune of Water Purged ingRate Calculation Plourkate iagpm _____ Timelo evacuate two casing volumes 2V33T2WQ91 Number of casing volumes evacuated if other than two_AJui._ If well evacuated to dryness number of gallons evacuatecL.AJ/P1 Name of Certified Analytical Laboratoiy if Other Than Energy Labs Amcri Cct.n 3t Lb i5cc$UOCS type efSaniuk n1e Takeq tckdjj Side Volume S44 VS iSia specified RibV Pfleat4Lde Preservnthe AdilM fCle VOCs 311 HCL Nutrients HØavyMetals 100Th 25fl111L /Y 11504 11N03 tN_ Alt Other Non- Radiologics fl 250an1 NŁPmservafiveAdded GrossAipha I000mI 11504 YN Otherspecify Sainplºvolume If preservative is used SpeciCi Type and Quantity of Preservative comments ArrucA on S4c vw ___________ AAK 5CLVIflL\CUCA%u.Icjsa ok IiDC Pu.rp cnteJo I1a SwrpltS rht0 ur Lcifl-a4 g tL.rtc CJrcr Trva1s tKr1fl4 14n3r ia1tJ4 orts...F fr Nt.refl MIII GiouSwater Disthaige PairS Cioundvvater iMloaftoriug Quality Assurance Plan QAP Date 2.25.07 Revision Page 40 of 41 AflAC1IIUMIENT ii WNIITIE MIgSA 1IillAlkffJM IMUILL PifigLiu DATA WQMSSffiHET F0IIWIItOUND WAT1E Description of Sampling Event t4 TnC tt Sampler Location well name fl/nJ Name and initials /a j4 4Lr Date and Time for Purging 76 and Sampling if different_________________ Well Purging Equip Used ...kf4ttp or_bailer Well Pump if other than Bennet Sampling Event ILZLTC/5/iccnl/rrt Prey Well anipJed in Sampling Event______ pHBufferl.O pHBuffer4.0 Specific Conductance uMELOS/cm Well Depth Depth to Water Befom Pucging 57 07 Casing Volume 40 Well .653h Well 1gs-.367k Conductance avg ..S1 95 pH OtWifrrivg Well Water Temp avg Il Re4x PotczitSl Turbidity Weather Cowl NtL i b0 Exrl Amb Temp.prior to sampling event /3 Si true Oigi daLPutteci /e5 TilpeO55.CGaLPurged Conductance Si tO Conductance 94 PH-LZR 4.Z Temperature /i 3O Temperature Redox Potential Eli____________Redox Potential Eh SW6 Turbidity_______________________Turbidity Time æ3t Gal Purged Conductance szy P1 -Jp Time 0cc-c Gal.Purged Ct Conductance pH Temperature s$.$ Temperatur Redox Potential Eli_______Redox Potential Eli.. Ji WritE Cirowidwatez Discharge Peruræt Date 11.17.06 JRevision Grouuthwater Monitoring Quality Msuraace Plan QAP Page 41 of 41 JLUWJU-flJ JLI4WAtM.SJ Volume of Water Purged When Field Parameters are Measured jpgISflicuIation Rate 03 in gpm Time to evacuate two easing volumes 2V S160 ____________ T2v/Q_______________ Number of casing volumes evacuated if other than two If well evacuated to dryness number of gallons evacuated____________________________ Name of Certified Analytical Laboratory if Other Than Energy Labs 4$nmnle Sainnie Taken elide- Snitdevohsme iŁatifother thakaispŁeffiedhb Filtered circle Preservative Added circle VOCs 3x40m1 Ha Lit Nutrients loOm 112504 jyfr/as 250th 111103 All Other Non- Radiologics ZSOml .4--4 NoPtieseryativeAdded GmssAlpha l000mI 112504 Other specify Sample volume Ma preservative is used Specify Type and Quantity of Preservative oCtp t-/2L.-%dr cc ar ac2c fig qIZZL //r S77/C Ar Mill GonSwater Disclwrga Perrth thomSuater MorixitGring Qanlity Msaranoe Thin QAP Tirwoo Gal Purged 4-5 Conductance ltti3 pH Temperature Redox Potential Eli 33.L..I Thte 2.25.07 Revision lPage4Oof4fl Time IoS Gal Purged Conductance fl Temperature IC.UtI Redox Potential Eli 334 ATTACIHIIMHENT II WifE TIE M1ISA URWJITUM R6IIIILL FflD DATA WOIIRKSIHIIEET FOR GIJtOUJJD WATIE1 Description of SampliagEvent orLr rouv\.Qhr Sampler Location well name M\b ik Name and initials H0 11 lrt ii Date and Time for Purging t-i/oc and Sampling if diflŁittnt Well Purging Equip Useck jjuSp or_bailer Well Pump if other than Rennet Sampling Event 2P 2korhr 6-0A .Acr Pity Well Sampled in Sampling Event tW AU3 17 pllBuffer7.O 7j pffBuffer4.O Specific Conductance 9t uMflOSIcm Well Depth Depth to Water Before Purging is .37 Casing Volume Well .653k Well vim .367h Condtttance avg c3.3S jiliof Ylfdter avg r-Wail Water Temp avg IS edjby11 Turbidity Weather Coed._______________Extl Ainb Tcmp.piprtcpanipling event Z23 it job .OatPurged iTs TijtmI GLPurged Conductance Conductance a0-5 .S pa l7 Temperature .2-..i Temperature ..M Redos Potential Bk 317 Redox Potential Eli 32 Turbidity_________________Turbidity__________________ JtIil1 GioiSwatThsclimrge PeSt OromtdwESr lWo2utog QwJty ranGe Flau QA1 Date 11.17.06 Pevisisa Page 41 of 41 Volume of Water Purged Purnpig 1aJ Calcujtion Flow Rate 03k iii gpni Time to evacuate two casing volumes33T2V/Q 3K Number of easing volumes evacuated if other than two If well evacuated to dtyness number of gallons evacuatbLl V/k Name of Certified Analytical Laboratoty if Other Than Energy Labs 4vntrkan \3cJ L4 CODMIIeIIIS Ar mIiYC\ 1LN2Q j2pdtcrkL rje oc 3C49C Iotrner 1JLL CUCi Rre btncn ppSS PArS Puruc mIeX FAU tnda Pct rnccJ puic ovtck cIl SAMpLeS r1vtn .. cA-UOC Mill Gfoa2iiwae Discharge PerS urotdwfer MonitcSg QSILy Asriaice PIwi QAP Date 2.25.07 JRevsion Page 40 of 411 Sampling Event Quprr1t Prey Well Sampled in Sampling Event tku3 pHBuffertO i4 Time iSI4 GaLPurged .U9 Conductance p11 TAmriemhlre OT ArIFACHMIINT Ii WIRIIIIFII11 MESA IIJRANIIIUM MIILL FJIIEILRI DATA WOIIKCS1RIIEET FOR GROUMD WATEII Description of Sampling Event 21 ucsAer-Crrctn v3c.kcr Location well name Mv Sampler Name andinitials osrntr J4n1ttcLji Tfl Date and Time for Purging S/tfbS and Sampling if different ttt Well Puiging Equip Useth .Ypufflp or_bailer Well Pump if other than Bonnet pH Buffer 7.O Specific Conductance 11 uMHOS/cni Well Depth 3t Depth to Water Before PurgingJbi conducSoeav 2.1t .7 Casing Volume Well b7 .653k 31t Well iu/fl-367k pH otWiteravg LP Well Water Temp avg 15 Mi IC Turbidity Weather Cond PCa4fj Ciovckj Extl Amb Ternp.piiorto samplinflvent 295 tirne tbtPmied R.ac condncætpce 59 tie H5 QaLPurgetL Nt Conductance pH 7.N p0 Temperature t5 Temperature IS IS Redox Potential Bh Redox Potential 13h 158 Turbidity Turbidity___________________ Time ISft GaL Purged Conductance ______ Redox Potential Eli p0 Temperature .0 Redox Potential Eh li7 Ik.xrD fl M1ii Ggeuathvatez Discbarge Pearait OrowwKwater lWothtoæng Qtwllty Asturauce Plea QAP Date 11.1716 ktevisen Page 41 of 411 Volume of Water Purged jgpisg Rate Calculation ThthirIitv Flow Rate in wm s60 _____ Timeto evacuate two casing volumes 2VT2WQ12-S Mi Number of casing volumes evacuated if other than two If welt evacuated to dtyness number of gallons evacuate4..._ Name of Certified Analytical Laboratory if Other tan Energy Labs ..i/A SJC c.c 125O Lnncr 1lc1lA4u DtCs frr t.nrdr Utfl tao Spks SIL41 6OG vi-r MnsMu CIatr 4kj P-c tJL Thn4Saande SalSeT4 $1It Volume hMSStiker Filtered IciMe fitesemSve Added dreW VOCs tHN 314OiI1 Ifl tN Nutrients lOom 2$O Icavybletals All Other Non- Radiologlcs Seth 250 nil liMO3 NohiervÆtlveAdded GmssAbba 100Gm H2S04 Otherspecify Sainplivolume Ifapreservativeisused Specify Typ and Quantity of Prnservative Comments Arruc on camthvid tMCflk uc4 PaA4 /sccr doekstp4Lr cprnk6 LLL MiD aouiswiter JflSharge Pemait ou1aaa Moaitoriiig Qnliky Msiiwnce PS QAP Date 2.25.07 laevisioa Page 40 of qamnljnp Event ncr pIBnffer7.0 1.0 Redox Potential Eh 55 ATThCJBII4IIENT Prey Well Sampled in Sampling Event 1k $uffer 40 Time 5S tIC3b Gal Purged 37 qs Conductance p11 1St Temperature 15 Redox Potential Eli WJIIIIITIE F41ESA URANIRUM MuLL FHELW DATA WOMCSIHIIEET FOR OROUNIP WATfl Description of Sampling Event 2r Qup4cr G-rot.xnb v3.kr Sampler Locationwellname MvJ wanraadinulials Cnhtr ti-I Date and Time for Purgitg llc/a/o and Sampling if different itns Well Pwing Equip Use .Lpuffip or _bailer Well Pump if other than Bennet fl Specific Conductance R9 uMHOS/cm Well Depth ISIS Depth to Water Before Purging conductante avg .ia Casing Volume Well fl .75 .653h ..Well A1tI .367k pH of der avg Well WaterTemp avg IS 11 Redthcleeitiiiæh gg Turbidity WeaktherConcL CI a5 ExtI Ainb Ternp.prioi to sampling event 3fl C.- Time1.tc.....r OÆLPurged .QaLiUrged iLic conthictasce Condoct pH 7.5\pH.. Temperature ISES Temperature j5 Redox Potent at Eh 33 Redox Potential Eli_____________ TuibidityTurbidity Time N1i Conductance GaLPurgeg3J 2x2 pH_7.51 Temperature jc.b7 trb MIII ovSwaterDiscberge 1Fmit Date 11.17.06 Revinica Urnuedwater ltliothtodng Quality Aanurerce Plan QAP Tuttidity Vohune of Water Purged Rate Calculation Page4l of 41 Comments Arruc as sc tnncr fl0lkL 6\Y 5CIfli1n ACfl PUSt I2I7C Ru-WAt fl cŁ j4flS SznQts 15Uk 0F LJ- V34v-Jr ThPncA Lce 1- al4 reX Op\c U4- ThthMir_ Plow Rate in gpm Thne to evacuate two casing volumes 2V33T2WQjS Number of casing volumes evacuated If other than two -9 If well evacuated to dryness number of gallons evacuated si/Pt- Name of Certified Analytical Laboratory if Other Than Energy Labs 4-e tin Dcsr Sg oUOCs Mill Mxatdwvfl Discbage ftmiilt otSwater Monftothg QiSity Msurance Han QA AflACIffMllEN7 W1ffl1TE WIISA URAIk1llh IMIIILL ff7muu DATA wosiria GROUND WATEI Description of Sampling Event C\cj.cAcr Gm uncL i-cr Sampler iii ________________Name and rnitialsj ncr CI CCA Well Purging Equip USd 4Jiuthp or_bailer Well Pump if other than Bennet Sampling Event c0tL -rotwA AJtr Pity Well Sampled in Sampling Event 1.0 pflfluffer4Al________________ ____uMILOS/cni WeliDepth Depth to Water Before Purging3 .51 Casing Volume flY Well gS-7q .653h Well.36Th CoSSiea1g Well Waler Temp avg WeatherCond J0u 1t R%MkAL14lj%ed15 Turbidity ExtlAmb Temppiort9sSrplingevent Time otc dat purged C-Tjtpe Ot%S Gal Furgdd Coliduclaece flL CoJua1e pH 7J9 pH Temperature 1HJ3I Potensia_________ Turbidity Temperature IS Redox Potential Eli -T Turbidity Time g GaLPurged Conductance .a pR Temperature i3.5 Redox Potential EhLJ2 Time 0145 Gal.Purged S43 Conductance g7a pH 7.z Tern peratere___________ Redox Potential Eli. Date 2.25.07 JRevisioir JPage 40 of 411 Location well narsie M\ Date and Time forPurging _4J9.6./0C4 and Sampling if differenfl Ad/It pH Buffer 7.O Tb GSwaterDiscrgePerS Thee 1L27AJ6 ReSot GmuSwiied6iothSflg Qoelity Mauraace Plan QAP lPage4l of 41 Comments Arre bfl tx4 OlSI tnnrr JUcttj prt1J c- -eurrt R..n bezen n3-oiss la4A icII irjaOMuPrcvcthJ4iL3sTA1kaAc4soMpks to otis-f t1-Af cj-et pg At-troci4otak fr.4L t4AJ Twbidiity Turcbidlty__r Volume of Water Ptuged W4g2 gitflal flSa Rate calculation Flow Rate in gpui Timet evacuate two casing volumes 2V33T2V/Q ISC M4 Number of casing volumes evacuated If other than two .7 if well evacuated to dtyness number of gallons eyacSl Al/A Knee of Certified Analytical Laboratory it Other tan Thieigy LabC4wncavi LkJ I2SO4 If praservative is used Specify Type and Quantity of Prservktlve MIII C-r ardwater Discharge PeinÆt Gaoujidwater Monitoring Quality Murance Pkin QAP Date 2.25.07 evisioa Page 40 of 41 Sampler Name Mid initials cwtcr pH Buffer 4.O_ Specific Conductance 94S uMUOS/cm Well Deptl 130 Conductance 27 pH Temperature ..UttUUL.tLIfl4.._ PH Temperature 7.G7 Ib AflACJIIIIMHEIkJT II ifiTJE 1AIESA UAN11TLJM 1141ff LL PIELRP DATA WORSE1EET fl GROUND WAT Description ofSamplinglivent Oxarkr rovn L0Ar Location well name MV it Date and Time for Purging _/.1 CY and Sampling if different tv/A Well Purging Equip Usett pup or_bailer Well Pump if other than Bennet Sampling Eveutr flA G-rotwl Acr Prey Well Sampled in Sampling Event Mb as 11pilBuffer7.O Depth to Water Before Purging jo Condutffince avg QX Casing Volume Well .2 71Q .653k Well N/fl-.367h pH ÆtWEl avg..t 75 Well Water Temp avg IS .41 Rdb$W$/13 Turbidity .97 WeAther Cent J.L-a c/k Extl Amb Temp.piortoamplingevent .25 Lpurged .q Tii18H...._Q$.PUrged conductance Conductance_______________ pHp11 Temperature 1S .3Cj Redox Potential Rh___________ Turbidity Temperature 15.43 Redox Potential Rh Turbidity .5 Time l3 Gal.Purged 210.tk Tme 112.4 Gal.Purged 70 Rcdoc Potential Eli Redox Potential Rh -7 MIll GwuadwAterThscbaige PerSt GrouiSterMoito1ing Quality Asstance Flea QAJF Date 1i.17B6 Revizbri Tuthiditv Page4I of4R Voleane of Water Purged Pwwiiit Rate Calculation Flow Rate Qi in wm S/69 Timto evacuate two casing volumes 2V.33 T2WQ ISS i..C Number of casing volumes evacuated if other than two_1.7 If well evacuated to drmess number of gallons evacuÆted...._.. Name of Certified Analytical Lahoratozy if Other Than Energy Labs 4fflercan \3csA La scA-Uoc 1pe d$annsie HaSsle Taken elide SiiiyolIaneSfttt kkM1e0ed Filtered dale Pnservnfive Added jdrde VOCs Nutrients HeavyMetals All OUtS Non- Radiologics hnssAlpba t3N it 3k4Oiii1 100 nil 2sabif 2o IS 1000ml Ybt\ c14 Ha 112304 Yj $103 NoPzeervalive Added 112304 Other specify Sample volume Ifapreservativeisused Specify T3pe and Quantity of Preservative Qaninents Ar s1Thno MnuSti tuon PcACW rgg isvnrr tArfle beacui 43 okk sE114s HJIWICLM Ar4kA AP% pttscrnl 4r uC wi4 ttcII 4r o.o SCMbhS TIF t3rAL 11$f cl-1 ckLtcThcauta..Af Purn Stc4crrX lt\Ak 4k.4i MIII Cro dwaferDLstharge rena Thte 2.25.07 Revision CrotSvvater MoSoring Qualiuy Assurance Plan QAP Page 400144 ATTACIBHMIIENT It WIHUITIE MIESA IUIILM\JJJUM 1b11LL FHIILD 1flTA WOIIKSHIEET 111W GflOU1k1D WATIEIQ Description of Sampling Event 4Ao rnwvk tfl4er 3rck Qtt4 Sampler Locationweilname Mt.Nameantlinitials tnhrr Date and Time for Purging I/3O /0 and Sampling if different Well Purging Equip Use 7jiuthp or_bailer Well Pump if other than Bennet fl Sampling Event krI i.3J-Prey Well Sampled in Sampling Event rn pJlBufferl.O 7.0 pHBuffer4.0 4.0 Specific Conductance Pt uMl-IOS/cm Well Depth Depth to Water Before Purging Casing Volume Well l5 .7j .65Th Well -.fh .367k Coiduetance avg pH Water Ivg Well Water Temp avg lb-il R$dx Poti1ial L3OTuthidity Weather Cond Owi ThttJ Auth Temp.prior to anipling event c1 Time OC ML Purged .ai Tiflie O%MO Gal Purged La Conduciance J.ZA Conductance aca pg 7.gs 71c7 Temperature .i\Temperature Redox PotentialEh 331 Redox Potential Eli C4.7 .. Tuibidity Turbidity Time o1l5 Conductance GaLPurged Q2c.ciS Time CA4S 0g Conductance pH Temperature GaLPurged W-S5 X71 plL Temperature ig Redox Potential Eli 93 Redox Potential Eli 2S trb ____________trb Groundwater Dischge Perasit Groundwater Mothtoriug Quality Maurance Plan QAP Trhidæhr Date 11.17.06 Revisien Thrhialihr Page4l of4I flow Rate wm 5/fill ________________ Volume of Water Purged iwS Rate Calculation Time to evacuate two casing volumes 2V T2V/Q SS MA Number of casing volumes evacuated if other than two If well evacuated to dryness number of gallons evacuated tV/A Name of Certified Analytical Laboratory if Other Than Energy Labs AJ /A XvjaofiPk Ssy4 Taken fclrcle Sainhle V$unie indicatØlfothØr thahal specified beta Wlltered circle Presenrative Added circle VOCs Nutrients t4 3dOml 100 ml .-na .%S04 llØavyMetals 25011i1 tN Aft Other Non- ItadloEngics CD 250 ml .t No Preservativadded GrossMplia Other specify ycgtcrd flrlyLVC 1000nil SampiS volume 112504 ifaptveisuwl Specify Type and Quantity of Preservative Comments 4rruc s1 prQ79g ilritr .1IL1 prcscJ Cr $LrIrcgk tflfl torn Cr 12A X4 .A.A al OCtSO Mf pvJhA o4St Lii-046g CJtcc L040J-PovtLc uJria4Ltrs PfL TSrn4r.A cin0Ac Mill GMwdwaer Discharge Penmriit Ozovelwater Monitoring Quality Maorance Plan QAJI Temperature Pt Potential BhX2 Turbidity Date 2.25.07 Revision Page 40 of 41 TimeflO GaLPurged 1W IS Conductance Lffl7 c.59 Temneratnit 111 Time O%S5 GaLPurged L.L4 Conductance pH Tempera LGDTh turn Redox Potential Eli c1t Redox Potential Eh rb AflACJHIIMIIENT 11 HOfl 1MUESA IURAMUIW MIILIL WJIIJZLD DATA WOflJBIIEET FOR GROUND WATER Description of Sampling Event Qa4 rou4.2-r Sampler Locatioawellname MVJ4a NarnSahdinitials lOtvlhc.r Date and Time for Purging 4117/9.xDOg and Sampling if different u/q Well Purging Equip Used .lpuffip or_bailer Well Pump if other than Bennet Sampling Event Prey Well Sampled in Sampling Event__i.Rva9 pHBuffer7.O 1.0 pHfluffer4.0 140 Specific Conductance nMHOSIcm W4l Depth Depth to Water Before Puging IC MU Casing Volume VT Well 4.3 .653h Well v/4 .36lh Conductance avg gcx.nc pli of V$Łr avg cC S7 Well Water Temp avg gc Reddx PotentW hhyi-13 Turbidity u.3 Weather Cond Su.ivl tl Amb Teznp.pdOr ampiing event J7i tlinc D74 aLrurged GaLPurged FtS coruluciance Hk Conductance Lt3 pH_____________ _________Temperature 19 __________Redox Potential Dli 357 TurbiditY LI Mill Iwater DECSgC oiwit Gimadvar Mo2itothig Quality Mcurance PJau QAJP Date H17.06 Pevithot Page 41 of 41 Vohniae of Water Sw Rate Calculation Plow Rate in gpns 5160 33 Time to evacuate two casing volumes 2V T2VIQ Number of casing volumes evacuated if other than two_ If wall evacuated to dtyness number of gallons evacuatÆl v/A Name of Certified Analytical Laboratory if Otber Than Energy Labs ncr cr \j eQy Lb sc cS 7e etSasnurle $akintle Taken slide SÆiiieVqIuISIj4lieS tik.speclnedhkW lAkerS tŁle Preserratfive Mded drdel VOCs JN YN 34tYjr ..in Nutrients HiavyMSa AAF Other Non- 100th 2S0W aSOilil NH jf9J04 YN 1IO SPteservatlveAdded Radiologics GressAlpita 1000ml It 112504 YN Otherspecify SaniptØvolume If pmservative is used Specify Twa and Quantity of Preservative ___________tnncr 110tU prcse cFrPucnXL Mne fl9 r4c pt3 LJ-fn -rbrog n.4_u.qf Comments __krriuj Or\ intk canmtid Mill C-roundwater D4scharge Perrilit Groundvvafer Moraitoæng Qaality Assurance Plan QAJP Date 2.25.07 Revision Page 40 of 41 ATTACIHIIMIIENT llflNhIT1E 1MIISA IIJRANMJM huLL JJIIELD JIDATA OUP111I WATER Description of Sampling Event r9rrr4c /iw Sampler Location well name 1k i-Name and initials Jar /1zL Date and Time for Purging Z66 and Sampling if different pH Buffer 71 4O pH Buffer 41L_ r..tea..na q7qL/ pH Tenipe rature tj .17 Welt Purging Equip Used i1ap or_bailer Well Pump if other than Bennet QEO Sampling Eventl2rarc4 /-icc.J4Arc/Prey Well Sampled in Sampling Event...LJLttI.5 Specific Conductance qqg uMHOSIem Well Depth /30 Depth to Water Before Purging /Iª Condlittanceavg Casing Volume Well /1/76 .653h Well v/ii-.367hu6æIÆvg Well WaterTemp avg .15 R14XPWIII$4a Turbidity Weather Cond Extl Amb Temptpioi to sampling event mnel2Z5Ga1.Purged CDndUCtSPce___________ TiipmO7lO Gal.JYurged /frJs Conductance____________ p11 .7 Temperature -I %ITemperature_____________ Redox Potential Eli 30 Turbidity I- Redox Potential Rh 53 Turbidity IITimeGaLPurged17 Conductance .-t. pH_ Temperature 641 Time 3GaLPurged 26- Redox Potential Bh Redox Potential Ehi Mill Gromadwatez Discharge Permit Orouudwater lWmæuflig Quality Assurance Plan QAP IDate 11.17.06 Revisicu 1flithidihr Page 41 of 41 Volume of Water Purged When Field Parameters are MeasurecL Pwppinflaie Ca1cuio Plow Rate in gpm S160 -33 Time to evacuate voasing volumes 2V T2V/Q Number of casing volumes evacuated if other than two_ if well evacuated to dryness number of gallons evacuatet. Name of Certified Analytical Laboratory if Other Thin Energy Labs P1414L 7TWF hiiiiS Samule Taken circle SOSIe Volume SIteIfoIhØr kas specified Filtered circle PreservafiveAdded circle VOC tjj CvN Nutrients loOmi O4 HiavyMetals Z5OS1 IINQ3 YN All Other Non- Radiologics 250 ml Na PreŁervative Added GrossAipha i000ml 112S04 YN Other specify Sample volume Ma preservative is used Specify Type and Quantity of Preservative Law /7Coots iiiM .-t1i 1tCVA- cL f1 /k p72j/ ..-c- fen-Staf .- pU5.-apgc -y4Ivg//t Mi 3mcindwaer Discharge ParS Gomsthvater MonitoSg Quality Msurance Plan QJ4P 2.25.07 Pavision Page 40 of 411 ATTACII4IIENT Lircatwu well esmal b.A.14 DateandTinieforPinghkg Y/19/ccj and Sampling if different gfi Sampling Event rI 6-rcs.wA l.Acr Prey Well Sampled in Sampling Event Mu Z3 1.ii pllfluffer4.0 Specific Conductance 4g uMHOS/cm Well Depth I4 Depth to Water Before Purging 103 Casing Volume Well .2.C .653h Well rs.i/4 .361b Conductance avg 4079 p1 at avg.G.S Well Water Temp avgJ Li Weather IJond SCAgn 53L5 Rdotdtil flh.Zl_Turbidity Extl Amb TŁinppiortp sampling event SM.Purged TApp.Og.QaLflirged i4.5..... Conductance 9033 Conductance LJ oig pH p11.LS2- Temperature_____________Temperature JLI .3 Redox Potential Eli Y3 Redox Potential Eh 23 Turbidity Turbidity Conductance 4072 pH Temperature LS3 IR Conductance 9O P0 Tempe rature VTMTIE MIESA WAJ1RUM aL JFIflELIP DATA WO11RKSMZET FOR GROU1U WA Descæpion ofSampliugEvcnt Qs..s.c.r-cr rui L0.-r tsaM Sampler _________________Narneandinitials \canci- rioticCnj1 Well Pwing Equip liJsect puffip or_bailer Well Pump if other than Bonnet pH Buffer 7.Q Time OXLJO iaL.Purged 3J .4 Time pgip Oal.Purged sb Ltedwc Potential Rh 31 Redox Potential Rh S37 lu.rb ___ Mliii r4anterDisciargePeiS Date 11.17.06 Revizior Owundwater Monitoring Quality Manrance Plan QAIF Page 41 of 41 Volume of Water Purged Flow Rate in wm S160 .33 Time to evacuate two casing volumes 2W ___T2WQ iv Number of casing volumes evacuated if other than two ivtn If well evacuated to dtyness number of gallons evacuÆtd /114 Name of Certified Analytical Labontozy if Other Than J3nŁrgy Ialis 4rna Cnmments ArroeA..On SV\e %O72t It litLnnrrHnIIitlCnA fltCicizrt ttr OuTht un 14Ajcu 4r FAnufz Paruc 0AJk xhcwc jU 0P scniplis 4xtntMcktcaa j3od-cr Urcqr Kr4r.A rar si3 rkLi 1_S -n6 imofSaSle E$iiS Talien chide I4eVume SISffSIoi Filtered chide Preservative Added circle dudf peeffied VOCs Nuldents HØavyMetals All OilS Non- Radiologics JIUSSAIPJIa Otherspecify SNYN 7Y Di 10Dm 25Oit 250 ill 100Gm SamplŁvolume Tt4jYff .c act YNO4 IIMQ3 NorvativAdded R2So4 CO J.nODfAiC If preservative is used SpeoKyType and Quantity of P4Servative Mill 3mundwater Discharge PenS Date 2.25117 Revision GroviaSater iWwLiitcSg Qa1ity Msurwice Plan QAP IPage 40 of 411 AflACILIIME1kJT fl WHff11TTh MlA URANIII MuLL FIIELIIJ DATA WORKSHIIIEE7f FOR GROUND WATER Description ofSan1ing Event Qs.xarcr rck LJtr Mo41.j amp er Location well name MV Name Mid initials \anncf o11 Jc Data and Time for Purging cIi Ion and Sampling if different tV/ Well Purging Equip TJse pwnp or_bailer Well Pump if other than Bennet Sampling Event 31\CkoAcr rowck hr Prey Well Sampled in Sampling Event MU pHBnfferl.O 7.0 pll$uffer4.O Specific Conductance 94 uMROSIcm Well Depth Depth to Water Before Purging JpLj OS Casing Volume 114 Well 3.04 .653h Well .367h Conduttunteflg Welt Water Temp avg 14 Wi Reax Poteiti4J EL 3OS Turbidity C3 WeittkerCond._________________Extl Amb Temp.pior to sampling event ThnenmOaai.Pui1ed .6 Ql.Iurged It45A Conduciance 40cL1 Conductance 4b pH piL Temperature V177 Temperature Redox Potential Bk 115 Recfox Potential Eli Turbidity Turbidky Time bAbD oW al Purged Conductance L1fl7fl PH Temperature iLl cct Time O8fl GaLPurged J141 Conductance______________ pH GMO Redoic Potential Eh Temperature j%OS RedoxPotentialEh_____________ GiidwnterDisthtarge Mmit iDate 1Ll7fl JRevkioa ouodwcterNothtoSg Quality Aarance flea QM 41 of4l Tuabidity Turbidity_________________ Volume of Water Pwged gjpjn Rate Calculation Row Rate 03 in gpm Time to evacuate two casing volumes 2V S160 .33 T2V/Q 97 UJ Number of casing voluMes evacuated if other than two If well evacuated to dryness number of gallons evacuated__________________________ Name of Certified Analytical Laboratory if Other Than En6rgy Labs 4rflfrCajl \a3cs4- seA- eflanrSe Safln tilŁiq theM eows lSik$ieltlJiØk specified Filtered fciSe Presendflve Added cirØlØ VOCYs 3xtil Yfrb RCL NutrIents yyMelaIs lOOmI 250t1 H2S04 YJ 111403 All Other Non- Radlologics 250 iS No PssºrfltivAdded GrossAlpba Other specify TnonpiIc l000niI Sample volume 112804 Ifapmservativeisused Specify Type and Quantity of Preservative Comments ArAitA-sc or ia1nrr prcecrtIrcr jwt onel SIno\tprn sr\beiptn cx4 0110 A4A td1 nr fArnŁ Puw CAka ogoi hAlt ES th2 k OOR tt %C.Atf Ctffkrbro4axk i- ttttnix rom Mill GrnSwater Thsclwsge Pezrnit Date 2.25.07 JRevisioa Grotwater Mataaing Quaity Msurance Plan QAP Page 40 of 411 ATTACNEIMIIENT 11 WIRUITE MUSA VMANRffJM aL F1IILD DATA WCl1lSfflllElET ffiC11 GROUNIID WATEJI Description of Sampling Event vts.r4er G-rou4 v.3 okcr Sampler Locatiomwellname Mv IS Naneandinitiafs lAnhrr ri-I Date and Time for Purging S//9 Ic/i and Sampling if different t//j Well Purging Equip Uset .lputtp or _bailer Well Pump if other than Bennet fl Sampling Event___________________Prey Well Sampled in Sampling Event jl4t3Jq pllBufferl.O iC pfllluffer4.O__________________ Specific Conductance gg _jiMROS/cm Well Depth 131 Depth to Water Before Purging JOC -1 Casing Volume Well tet P1 .653k Well tn 14 .367k CoædgeSceMi 4L1 pt4QVitvgq 44 Welt Water Temp avg 15 2C R6i 23 Turbidity Weather Cond Sv.Mp ExtlAmb Tinppiortosamplingevent .25c Time OEID Gal Purged 54O5 Tape-ioao Gal Purged J5J 9s Conductance LtSO p11 Temperature____________ Temperature______________ Redox Potential 13k 331 Redoc Potential Bk 31 Turbidity TurbiditY Time 5o Gal.Purged Zc.QS TimeJiJS Gal Purged S3 Conductance 95 Conductance p0 G.c pH__________________ Temperature Temperature Potential Bk________________Redox Potential Bk__________________ tu..r\a vulGSwteflThcbargePerS Thite 1L17116 ReSicnv UroBrndwctEi Monitoring QtSY Mstrance1t Q4P Page4I of 41 Volume of Water Purged Puwinaqc Ctlculqtion Thnet evacuate two casing volumes 2V 9343 T2V/Q.O Number of caning volumes evacuated if other than two if well evacuated to dryness9 number of gallons evacuatcL_A/LI Name of Certified Analytical Laboratory if Other Than Energy LabsV// Comments Arrk or flow Rate QJ in gptn S/60 Jf$Spde $nde iliS SSWeiV$ume SSiiilidt tskaasneaned helowY Filtered ciSel reserrative Added elSe VOCs 2N IrAoIiC YN .. Nutrients ReavyiWetals loOnil 250W ÆP lIMO3 All Other Non- Radlologics 250m1 1%ltPSÆthrvatheAdded OrossAlpba Nl000ml H2S04 YN Otherspeclfy SanpIevolume If preservative is used SftcffyT3pnd Quantity of Preservative cnncr \k01L jxck fr ar osuK Rs.r saripbnMt ccnk Pu.rc IDcyft 112S SarvrLc 0k tcflS rodltk Pn%rUsocn trGA hii LCft Sic a1 113n u.Dz C\cc4i-11ro4otk bJc4.j S4 pvcckg AflACIIIIIMUEIMT. W1HflE MESA Ui1ANflJM MILL IIEJLRP DATA WORIICSJBIEET FOR GROUND WATER Description of Sampling EventC3t vcxtr ii-r Sampler Location well name Mv IS Name aEd initialJ cgnftcc 1C.1ha4jl TA Temperature .39 Temperature_ Redox Potential Eli 9- Mill GtSwater Discharge Peurth Groundwater Monitoring Quamy Msurance Plan QAP Date 2.25.07 Iltevisian Page 40 of 411 Date and Time for Purging fr /11/pf and Sampling if different .i//k Well Purging Equip Use ..puthp or Well Pump if other than Bennet fl Sampling Event o.nAcr1 Prey Well Sampled in Sampling Event M3 j14 pIBuffer7.O .7 pHBuffer4.0 L4 Specific Conductance gq uMHOS/cm Well Depth 137 Depth to Water Before Putging IC Casing Volume Well 14 .653h It Well v.eM .367k Conductance avg $5 er avg.1 .5 Well Water Temp avg Re4pxPotsiialF4gAk Turbidity Weather Cond unA Extl Amb Temp.prior to sampling event 1S /.2- Time OCIW laLPurged .6 TiS.1OPQ GaLPurged 1P Conductance 9S1 Conductance LI -g pH pH Temperature Temperature 3t Redox PotentialEh 31 Redox Potential Eli Turbidity Turbidity TimejObb Gal Purged 9.40S Conductance L3g Time liaC Gal.Purged 27 Q5 Conductance LI LIJ nH Redox Potential Eh MIII Gicouwater Dischnrge Permit OrouudwaterlWothtothig QtwJiiy Msvrance Plan QAP Ttutidity Date lLItO$Revirion Turbithtv Page 41 of 41 Volume of Wiiter Puiged iaRate Calculation Mow Rate Qj in gpm 5160 _____a33 Time to evacuate two casing volumes 2V T2V/Q 121 t-4n Number of casing volumes evacuated if other than two_ If well evacuated to dryness number of gallons cvacuateL A//A Name of Certified Analytical Laboratory if Other Than Energy Labs AJ 1ant%cr flO\Uau DrLeik tsrtIt -- lfAtheJc lt5 S1p1c pLclk lI7 Lfl fi1c U3i V3ccr Ucar 1j1roJAeG-Pxtt tAJcC4d Su.nn Ilit i.-.o \Li-s\iXflr Sainsde Talthn dSe Siile Vohune lWllcatØ If thØr iSLeS specified bthcI Eiltered drØlel Preservative Added circle _____ VOCs 3140nil Rd Nutrients RØavyMetals All Other Non- Radiologics loOm zsod 250 ml RO4 YN 111103 No PreservativØAdded irossMpha l000mI 112504 Other specify Sample volume preservative is used Specify Type and Quantity of Preservative Comments ArrycJL on S4c cl1g 1nk cawisLri rncnk P..- ScpIc Mill G-row-zilwater DIscharge ftSt C-rougdwater MedtcSg Quality Msurauce PJIaa QAP Time OCLOC Gal Purged 2%.05 Conductance -f 15 pH Temperature JLJ iC ATTACIRIMENT ii iDate 2.25.07 aevicica Page 40 of 41 WJIIILTIE MESA URA1JMTh6I MILL IWJII1 DATA WOIflSIRGEET FOR GROUPd WATER Description of Sampling Event2T Ov.p4er rouq1c Location well name Mu Sampler rl Name nOd initials ltlhcr flaUt44j tR Date and Time kr Purging and Sampling if different AJ/ Well Pming Equip UsetL j.puthp or_bailer Well Pump if other than Bonnet fl .cnmnmw Event rJcrhx pHliufferl.O -1.0 _____Prey Well Sampled in Sampling Event Mv ao ___pH$uffer4Al_________________ Specific Conductance gg uMUOSIcm Well Depth Depth to Water Before Pucgingfl Casing Volume CV WellZ2 .653h Well .u//I .367h 01 fviCodiidtdObeafg4t4 Well Water Temp avg 14 .-Cs Weather Cond Saws Bxtl Amb Tetnp.pjior 1 sampling event OcS Time YThO al Purgect Condtictnpce Tilpe-Oflg Gal Purgedil4S Conductance uS 7j Temperature______________Temperature ILLS RedoxPotentialEhRedoxPotentialEhHO TurbidityTurbidity Time 04O GaL Purged 37.C5 Redox Potential Eli 37s Conductance pH Temperature c.53 Redox Potential Eli c3 Cr owatezDisc1mrgePeS Dte LI7BS Revkion Urouodwater MoaitoSg Quality Assurance flea QAP Tuabidiitj Page4l of4l Volume of Water Purged jpna Rate Calculation flow Rate in gpni 8/60 _____p33 Time to evacuate two casing volumes 2Sf T2V/Q 13F Mt Number of casing volumes evacuated if other than twoj If well evacuated to dryness number of gallons evacuatcL....NI Name of Certified Aunlytical Labontoiy if Other Than Energy Labs Comments ArrucX p Afl riw.J44ct.Jcnk Type nfSnnSe 1iS Ti IciSe Sai4leVoEu diidiSSttk thSspslfied Filtered chile Fresenratlve Added circle VOCs lot lEt NutSnts HeavyMetals WOmL 250ffl1 if04 lIMO3 All Other Non ZSOIS N6 ltervative Added Radiolocs OrossAIa 1000ml 112S04 YN Other specify Sampl volume If preservative is used Specify Type and Quantity of Preservative v34tr t3c4 bcrshs ci cr rJNJcSunnJ y4c P%A\OCfl j-pc4fl LM- c.aao stc c40qi Gtqulwater Dischage Thra rotndwatcr kIoa4tciJing Quality Assurance Plait QAP ATTACH1buIINfl WJHIIJTIE 1fEA UItMklffffiM MILL F1IILD DATA WOM1HflEET ThE GEOEJNJIJ WATB lDescæption of Sampling Event -2r QM4r xrctx4 Temperature LL4.S RedoxPotentialEh a17 Turbidity Sampler IUL rnflNameandinitials Temperature ft 41 Redox Potential Eh Turbidity 33\ Date 2.25.0 Pwvisioa Page 44 of 41 Location welt name Mv Date and Time for Purging VP-S/cA and Sampling if different N/A Wet Pinging Equip Use .puthp or_bailer WelIPump if other than Bennet Samoling Event____________________Prey Well Sampled in Sampling Event Mi pllBuffer7.0 iC pHBufler4.O gp Specific Conductance ggtc nMElOSIcm Well Depth Depth to Water Before Pinging 71 Casing Volume Well go .7 .653h Well ..na 361k CondUtSnceavg 5R3 3S Well Water Temp avg RedxPotr4tS hrs Turbulity Weather Cond PtJI LIOLJ Extl AiæbTtinp.p4jorto sampling event t4 mile Otlaru .L4.q3 tl Purged Cenductauct Conductance pH___________________pH... Time 6O Gal Purge LS Time 03 Gal Purged Conductance 358 Conductanck pH LK Temperatuit 14 .sa Teinperatur Redox Potential Bk Redox Potential Eli_______ 19.55 Lxrcs Mill Gm dwatezli.JisSrge PenS Date U.17.O6 evizion ocvsMoakoiug QvwJir auraace Plan QAP Page4l of4I Volume of Water Purged TJ pjpiug Rate Calculation Tuthiditv Flow IRate QJ in gpm SF6O _____ Timet evacuate two casing volumes 2V _____T2V/Q pt-17 Number of casing volumes evacuated if other than two 17 If welL evacuated to dryness number of gallons evacuated_______________ Name of Certified Analytical Laboratory if Other Than Energy Labs Un Comments Arrvuk on 4c c\r pCjp.O sntk c.cnnt\.ricl tucnk P..... --O.5 t%e\Oi rt2o itn naJdr JIS pialtc LJV uo JtLr etcc.r 4brohocA p.e v3c4t P4k Atk /4th.-i ck4t\ ofSaaSe $aiiuiIe Tiln elSe SaS$etoiume tISSlfotŁr thSiisUSfledbaWJ Piltered IdSe Preservative Added diet rkN4os YN lift Nutrients HØavytals All Other Non- flN lOomi 2OThfH 250m1 flft04 flNO NMservatlveAdded Itadlologics GrossAipha i/bowl 112S04 Other specify Sainpl volume if preservative is used SpecifyTypeand Quantity of Preservative tanncr-k01tLL orts Mill Grotirniwater Discharge Peasait Grorwctwater Monitothig Qiality Assurance Plan QAP MLTACIHIIMIIENT Ii W1IIffTH RuIIffSA lThtAIkKUJM MILL JIIEIIATh DATA WOLLSJHIIEET mM GROUNV WATM Description of Sampling lEventlr ctr4er xrou4 Sampler Locationwell name Mv-NanieaitdinitiakJhcr 10lUcu Date and Time for Purgkkg g/ac/oj and Sampling if different Well Pming Equip Useth .2.pthp orjrniler Welt Pump if other than Bennet fl Sampling EventS___________________Prey Well Sampled in Sampling Event MuQ5 plIliufferl.O pflBuffer4.O g.p Date 2.25.07 Jftevisioe Page 40 of 41 Specific Conductance ff1 L_uIt4UOSIcm Well Depth Depth to Water Before Purging bI 41 Casing Volume Well t3 7a .653k Wefi AdA 361k CondttSnceavg 134 jit1O$4airg gg Welt WaterTemp avg Sb RedocPdtthltsaI516 Turbidity Lc Weather thud do4j Exti Ainb Temp.piortq sampling event 19 mue O73L Gal Pwed_jfz Tima pOO Qal Purged Coflduciaice 14 Cn Conductance Y37a pH 0.cN pjr.7.C TempenftuLk.I5 Temperature_______________ Redox Potential Redox Potential Eh S2- Turbidity .k Turbidity Conductance Time O5O Gal PurgecL tG Time OfloO Gal Purged 1351 Conductance 13L4 7.07.flt pR Temperature Temperature JHT7 Redox Potential Eli_____________Redox Potential Eli SZ1 MJII GrotSwater Discharge briSt Orouudwater Mothtoring Quaihy Mzuscance Plan QAP JLMte 1117.116 Revizicat Pagc4l 0f41 FuwtS Rate Calcolafion Turbidity --_______ 3cU Plow Rate in gpm s/6o _____33 Time to evacuate two casing volumes 2V T2V/Q 3S7 MA Nugaber of casing volumes evacuated if other than two if well evacuated to dryness number of gallons evacuated //I\ Name of Certified Analytical Laboratory it Other Than ergy Lab 4/k ufSnniSe SaSple SithflVulu Filtered ___iTf6thr t4Se IdSe thAkanneeifled Vwlaw% Comments Arru4 or c.1-oioI tnncr 101IA prcsetf yt ctrtŁs-scnt4n4 tUCflt w-cc bcr p710 trjtO Mntde Swltc tcfl 54 0914 Pr.esenatfive Added drde vocs s-N I1 ira tw Nuttients Havyctals All Other Radiologics Non XN t.N jOOml 25flt 250Æ1 H.HMo3B2$O4 NPiservativeAdded GrossAipha i000ml U2S04 Otkerspeclfy Sample volume If preservative is used Specify Type and Quantity of Preservative tP3t-tr dat 4-bro44t-tot..k P-rpc tJc4j PcrW4 t1out/5w-kck c.icwks L./CkInce ifl4.n Mliii Groundwtaer Dischage PerriiR Uwvthwter aosonmg QthtyMuranceP1a Q/LP Dte 2.25.07 1evision Lage 40 of 41 Nasnd iiiitiaLs_Ttncr 11 pHl3uffer4.O Specific Conductance I8 UMILOS/cin WeltDeptb Si Depth to Water Delete PuggiugAQ .23 Casing Volume WelL 1Ma .653k .3 Well rsP 367k Condttthntea$g 7107 pM agi Zi Well Water Temp avg ito Rei%41 flubbty WentherCond Pc irDtAt EtlAmb.tŁmpFio1qjfl4iutevtflt 3124 Time i1S a1 Purged fl Tje9 42 CondicMace 1195 Conductnc .7i03 pH 7.3 Temperature... jt49 Temperature IL 57 RedootcnaIEh 473 TurbIdity Redox Potential Bk H7 Turbidity Tint 4Lj JaLPurged L\ Conductance 708 Ic Time sa GaL.Purge4_SL___ Conductance 70 Cf Temperature I.96 Rex Potential Eli Temperature Redox Potential Eli L.j49 T1ACE1I4B1ThJT .2 TIE MISA RJMANJPJJM MuLL FIUELD DATA WOIEKS1HII11 IPTffZ GROUFD WATfl VccrApfflom ofSnmpling Event Xxor4cr rcu.nck UIJtr Location well name MV-J.o Date and Time for Purging /acyi and Sampling if different Well Pinging Equip Used jjmiap or _bailer WeEl Pump if other than Bennet Sampling Event 34 scsAjr 6-ro4 Acr Prey Well Sampled in Sampling Event Ru 22 pHuffer 7.O_ T1b waterDiccigePennit Date IUI.06 Revkon unugdwarlWoaftoiW Quthty AsaIjtanceFlEa QAF JPage4l of 41 Volume of Water Ptgged fllnJniflRate Calculation ow Rate W9 in gpm S160 .33 ThnetO evacuate two casing volumes 2V ____T2V/Q 21L MIIi Number of casing voluin evacUatedif other than two ui If well evacuated to dryness number of gallons ØvacwitS_________ tOnic of Certified Analytical Laboratory iiothertaan Biezgy Labs 4vntccan 3cJ L6k Mi OtliØi Ilol RwdiGlog1cs cc4-UOCSFeAdded Other gpeclfy wflcro3 J-nMflpA IC Cy SampiØ volume H2S04 Eta presetvative is used SpCyTjpe and Quantity of PServative Cr rc LeThr4cv .1 von T1 Nutrients Heavy Metals ________ tq57.1a NoPitŁiativcAddŁd Comments Arc 2AMfO fJnoW tar 11Q kJcAbs eb.-bfl 1I.Q3 1Lner fllIdcwj cuu txqe be qn o4I4S Ar4A Pur crX lcni sH V1- CcrJ\riApwj /Ait cy PM1 cJ0A4 prCSJ c- vdI 4r snpks tKcn --- Mill CrntSvimter Discharge Perwik Gmtwdwater MoSoSg QikaIlty Msarwace Plan QAP AflACIRIMIENT 11 W1HIIR1E flullgsA flA1flllUM IwaL IITREL1Th DATA WOR1CS1HIIEET FOR GROUND WAThR lOescæptioa of Sampliag Event tt 3rck Sampler Locntioiawehlname Mu ao NamŁSdinitials tnhrr U01lL Date and Time for Purging u/3O/00 and Sampling if different Well Purging Equip theft jufflp or_bailer Well Pump if other than Bennet Sampling Event Q.rI 6raar3 b3L-Prey Well Sampled in Sampling Event.StL 1.0 pHBuffer4.0 Specific Conductance gq uMLOS/cm WeJI Deptl Depth to Water Before Pugiug ft1 Casing Volume Well IU .65Th Well .at .36Th COSUCSIIØe avg 6f9iergØvg 14 RdttLjEt HS3Twbidity _______________-Bxtl Ainb TSP.p qi.tiaanpling eVent 31 ___________ _________________Conductance 72SC _______________pH.115 Well Water Temp avg 15 .1O Weather Coed P04i douA 11nietth.....daLPurged_______ conddsice ti p11 7i Tempeniture I.IK RedoxPotentialEh 4a Turbidfty Temperature Redox Potential Eli 157 Turbidity pIL 7i7 Temperature 44 Redox Potential Eli 45 p1 Temperature 19-S Redox Potential Eli qq Ji Dete 2.25.07 Revision Page4Oof4I pH Buffer 1.0 Thiie 25 GaL Purged 4S.Th Time ltoO Oat-Purged 4.1S Conductance 718-Conductance 7C3 Mill q3roundlwater Discharge JPew.iit Date 11.17.416 Revision Gmumkzitei Moakoring Qtvnllty MsIIJranCe lPlau QAP Page 41 of 41 Comments 6ArrheA S%al b2S ln.nntr prcscn 1k .ii4rjSLrrcdLQMSSwpaansj330 ft Ak aC LbAcC MAfr/ ectc-3-Jvt4K04 Pu-cc tn Turbidity Turbidity_ Vohune of Wattc Purged piiur Rate Calculation flow Rate in gpnt Timto evacuate two casing volumes 2V 8160 _______________T2V/Q ___________________ Number of casing volumes evacuated IC oilier than two vYj If well evacuated to dryness number of gallons evacusd tv/A Name of Certified Analytical Laboratory if Other Thui Energy Labs /A Added $O4 YNYN NlkServativØAdded w.qn v\ If preservative is used Sptclfy Typ and Quantity itPreservative Pt4 LA .1 floM .L..i nc_L-tAD tcteLL lAn\raie tfla4n iierAict fli-\k irsA taIcti 5onc tJS.iJ kLt Mill Grouwater Dischaqa Pencil C-rowtdwMer MonkoSg Quality Msurnce PS IMP ATIfACJRILMIIENfl WIKIITJE 1WA URANIIM LWLILL FHELILD DATA WOVSJHIIEfl JOM GIROUND WATEIR Description of Sampling Event_QMACCk .nwJ.ncLa1aer yck Sampler Location well nante Mu WaS and initials tnh rr flb it Date ancil Time for Purging .JI/130 /o and Sampling if diffeitut Well Purging Equip UJse 2jjwttp or_bailer Well Pump if other than Bonnet Sampling Event CXrkrI Gmanek t3a4tr Prey Well $ampled in Sampling Event MU pffBuffer7.O pllBuffer4.0 4.0 Specific Conductance CI uMROSfcni Well Depth J19 Depth to Water Before Purging Cl .79 Casing Volume Well 30 3.t ..653h Well /i1 367k Conductance avg 7.222 gj 4vr tS tL Well Water Temp avg Redazc otknd IS 4t Turbidity Weather Cont CA Extl Amb Temp priot to sampling event 21 Time ti Putied 45 TftI1e 1L15 Gal Purged I4 Thc Conductqnce 18 p11 pH Temperature RedoxPotentialEh iS Turbidity Temperature Redoc Potential Eli 40 Turbidity .4 Date 2.25.07 lbvision Page 40 of 4R ci Isiq Time Ifl Conductauce GaiPurged 2JflS Time LLO$GalPurged cL.2 13 CondtKtance 753 4cjI Temperature Redox Potential Eli t4 Temperature Rtdox Potential Eli -3 Iu.rb Mill GrowæwaterDiscbargeftrmit Date 1.17.OS Revision ii GmuMwater lWomitoæng Quality Assurance PAm QAIP Page 41 of 41 Turbidity Volume of Water Purged gjvin Rate Calculation Flow Rate in gpn Timito evacuate two casing volumes 2W 3160 _______________T2V/Q M4 Number of casing volumes evacuated if other than two If well evacuated to dryness number of gallons evaStd n/A Name of Certified Analytical Laboratory if Other han Energy Labs IA ofSmnS inpk Taken drch t.VmJume iiiedifith thisueklfled Filtered diŒle Preservative Added drila V0s 3XIWS.H Nutsients HeavyMetais Other Non- JY lOPS 2OW SYrnI 112304 .Y tIvaivAcWed Radiologics SkL. rossAlpha Other specify 1OOOml Sampl volume 11230 Ifapreservativeisused Specify Type and Quantity of Preservative Gtaer.d T.VMp5Aft$ Comments ArrucL or 1Lt fl.ll.L11 Cr .tvvplej Purnt sLh .4 icic %oefl Cr ia Pure s4pA al iaIS1 famjelrs puSJ ctt Ltl- koJrt Qar a1nAta Pcht dnstk/ScpTrJ\ciou.As Lst -t.c L4 Groaithvater Diachs Pennit GrouRdwSr McSoSg Qaaliw Msrmnceittn QAP DzBe 2.2167 Revision IPege 40 of 41 ACfflIIWUNT 11 WJIIIE7I7E 4USA UEAsIIIIUM MULL FN4D DATA WORKSJRIIET FOR GEOEJND WATfl Deccæpmi ofSampllngEvent 1A Qoo.r4cr rrcn V-.r Sampler -_______________Nameahdniitials onncr 1101LocationwellnameI1J Date and Time for Purgg /%/cf and Sampling if different tifj Well Purting Equip Used LjiSp or_bailer Well Pump if other than Bennet_Q o_ Sampliug Event gIK tiJtr rotwA u1tr Mv Welt Sampled in $ampling Event M.A It pfl8ufkr4.O Time 1W GaLPurged So.3 pH 3i Temperature VS Redox Potential Rh pH Buffer 7.O Specific Conductance qqg uMIIOS/cm Well Depth Ii 7L45 Depth to Water Before Putging 97 Casing Volume 114 Well 3O.SR .653k .3Well 4t/A .367k Coaduthuce avg Well Watet Temp avg IS 2.1 Rekg$470 mristy WØattherCond PA CIJ Lid ExtlAmb Tethi iantpHnveht .6 Tune 12tc Sal hrgecL_Tltte LSO Gal lnrged condUciauee 733.poniluŁtohce ThtSO pH_pp Temperature .4 Temperature t1 RedoxPotCntialRh L-7q RedoxrotentialBh 4O Turbidity________________Turbidity u32c Gal.Purged L.9 -r3c Conductance 73SConductance__ pH_S7 Temperature Redox Potential \S.13 Bk 481 omwrcgePerauit Date lJ7.O Rcvkinn Omundwbter MaSadng QdSJ Mancellac QAP Thbidity.nrbiay__r ge4l of 411 Volume of Water Ptrged Rate Calculation Flow Rate in gpa 8/60 _____ Timeto evacuate two casing vohunea 2V.33 T2V/Q 34 Mn Number of casing volumes evacuated if other than two If well evacuated to dryness nunber of gal ons evacatl____________________ Name of Certified Analytical Laboratory if Other thaÆ Si rgy Labs 4rneckan \3cs Lt sd-VoC jaaile TS Łlj ThtsSl MaiI1 besenative AMe djdi VOCs Nufrients .N10 cR WI iftaw MMaM 11 2NWbii Nn.HN mN All othŁk Non- Itadiologics OwasAipha Other specify Yii ii ioqoinl Sample volume Nisi$Mded u2So4 5N yencco.\CtfljxpAc lfapmservativeisused SpcifyTypand Quantity of PreserÆtlve Comments 5ntlrnt\ MnoP 3-igop Lto4cJ U3ccªhiJ CA4jh-on silt zsg Cnrr HJLda.j -tuenb-tArvke bnpn QoO PiA4A Pcircc cnik frfr 140O t1-i- Clcar Thrp4 Rnc Po.rki Llou.Z -M prescJ czn4 QcPl nr tao -sviipks txcn Mill Girorndwvies Dischasge Pernæl GroaSviater lWamitoiing Quality Asstrance Plan QAP ATTACIFIRt4EENT 1J1J1Th MIISA IIJ1tANJIUM IIIIIJLL lFJllffl DATA WOIIRKSIBIIEET FOR GROU1D WA DescripSn of Sampling Event reX Qsjar.Lr yra AL Location well name Mv 3m ________________ Sampling Event Quorhr 6.roveck u3rcr Prey Well Sampled in Sampling Event M9 a.7 1.0 pIEfluffer4.O -3.0 Specific Conductance 94$uMHOSIcm WeUDeptb Conductance 4OcY pH Th..SM Temperature pH Temperature Date 2.25.07 Revision Page4Oof4l ainpler Naneaudinitials ltvtcr Poll Date and Time for Purging CA and Sampling if different Alt4. Well Purging Equip tTsed Lputnp or _bailer Well Pump if other than Bennet pH Buffer 7.0 Depth to Water Before Purging IN O3.Casing Volume Well 711 .653k Couduttdnce avg LLO36 Weil.uI1 367k Oflfrdtet avg 5.3 Well Water Temp avg I.S Re4$dfjM9 Turbidity 1.8 WeAther Cond Extl Amb Ternjtpprto aaniplink event Time_Scai Purged Time NR Gal Purged 99 Condudauce 4O cO Conducrnnce 1O CL pH pHi 71 Temperature X\Temperature 33 Redox Potential Eh 3SRedoxPotentialEh2M Turbidity Turbidity Time LI56 Gal.Purged 4.5 Time III1U Gal.Purged Y1.C Conductance jpL Redox PotentIal Bk i3 Redox Potential Bk 201 Gmuathvater Discharge Permit Date 11.17A6 Revkionl Groundwater MoSwiog Quality Assurance Plan QAJP Page 41 @141 TuEbidhy_____________________9fl.rbidihr Volume of Water Purged W3MW fjppiug Rate Calculation Plow Rate in gpni s/6o .33 Thneto evacuate two casing volumes 2V T2VJQt f-kin Number of casing volumes evacuated if other than two Hf well evacuated to dtyness number of gallons vacuEted_ s.d- -eurn uq\-tr4A QctI 4r JAndrc Puqc cnkA it St V scnipks c1ku1Stfc.ti-t 1534 tj3cAcr Qcc crhOLkoL Pccr All/A Name of Certified Analytical Laboratoiy if Other Than Bngy Labs 4VVkfcfl kh3csJ- of Sanmie npletn cish SuiiijiIeVUhnue teaS 1tMJ1t di1iIiisneeified lkered elSe fttseryaflve Added drdeY VOCs tt 3k4thI ira rq Nutrients lOOlul HIQO4 YIN HeavyMetals SW 1O All Othei Lion- Radiotocs GrossAipha 2501ffl N6MlivAdded 1000nd H2SO4 Other specify sample volume if preservative is used Specify Type and Quantity of Preservative It Comments riaeiL tin .A e1 ifl itr%rr LlIiicuA ttCScn4 fluflit rinLl vi3eku 1r drMS bccF asl j7 MIII Groundwater Discharge Pennit Groundwater Moritcwing Quality Assurance Plan QAP ATJIACIIIIIMIIILNT Ii wmirE R4IIIISA 1LJIiVMkIIIUM flÆIILL II1R1ILD DATA WOJIRIICSIBIIEET flit GROUND WATER Description of Sampling Event Q.xar-cr rccnL LcsLr Sampler Location well name MV ..H Name and initials ltncr ii Date and Time for Purging cd los and Sampling if different 5/r3/OS Well Purging Equip Usect Lpuffip or_bailer Well Pump if other than Bennet RD Sampling Event flAorLr 6-roueck .A3cr Prey Well Sampled in Sampling Event Mu-5 1.1 pHBuffer4O 9.0 Specific Conductance 148 uMBOSIem Well Depth Temperature fl .26 Redox Potential Eli Turbidity .9 nil _____ RedOn Potential Eli Temperature 31 Redox Potential Eli3 Turbidity pH. Temperature A0.\ Redox Potential Eli 96 Date 2.25.07 evision Page 40 of 411 pH Buffer 71 Depth to Water Before Pvggingill Conductance avg Wi5s Casing Volume Well 53S .65310 3Wellw 361k otater avg Well Water Temp avg4k .1 R4 CS Turbidity .97 Weather Con3cScctA dnuA Extl Anib TŁmp.piorto tPtflveu1t .3-I Time g%A S.Purged cS Tiizl9%QaLIwgect Conductance__________________Conductance____________________ pH c.L3 pH Time 14W Gal.Purged -kAS Time $UIPQGal..Purged Conductance OS Gg aaSateuJtisSaige PeaSE Date 11.17.05 Jeciic Growthuater MonitoSg Qaality Macreace Plan QAJ.P Page 41 of 41 Volume of Water Purged W1 jpgRnte Calcidation Timto evacuate two casing votumea 2V ______________T2V/Q Mn Number Of casing valuates ŁvÆcuateifother than two If well evacuated to dryness number of gallons eaÆitd Maine of Certified Analytical Laboratoiy foSthsSrgy Labs Mc-can L6t TuthSy flow Rate Qin gpm 8/60 ii 904v\p1c ArriucŁit ik 07a3 SZXMpc.S p.iIcck 130 AcJ7lsA circic qttItCr HoIGI.j precaI Out ticvnp cent uhc coqS ii 1450 Mill ou water Discharge Pest Groundwater MordtoSg Qoa11ii Msumance Plan QAP Date 2.25.07 Paisiorr Page 40 of 411 ATTACE4llENT J1 WRIIIITE 4IIESA lLJliAIkllIffJM MILL P111111W DATA WO1KS111IIEET 1Ii\thP GJtOUNJ WATEII11 JoescripSu ofSampliagEvent CXnAer rac.nck U2cA-cr Siimpler. LocationwellI name Mw NarnØaªdithtiafsfltner rlTi.t Date and TOne for Purging ib/iCILO and Sampling if different 0R /o Well Purging Equip Used Lljuinp or_h iler W1l Pump if other than Bennetil EE Sampling Event crttrl rLitDJnt Prey Well Sanipledin SampiiiigEveiit MJ 7.3 Well Water Temp avg2O LC Re1bxihthMfti3 Turbidity t4 JO. Extl Amb Temp wior to sampling eventWeatherCondSLAg Timeb j47 ia Purged Time-Qal Pprged Coiiclutmice coi4w. pH 5-7S pæh G.lt Temperature_J Temperatute 73 Redox Potential Eh______________Redox otmIthlwlO Turbidity CT Turbidity pH Buffer 7.Q Specific Conductance 6ft uMROSfcm ctPit Depth to Water Before Purging ii 41I Casing Volume 4ft Well r4S .653h ....Well isJ//4 .36Th Condttctencenvg LI 74s Si fitraVg Time 14L GaL Purged I3.Cc Time itL5a GaLPurged Conductance 484 hl Conductance 479q _________________PH C41 Temperature Teinpenture go .qC Redox Potential Eli 03 Redox Potential Eli C5 lWiIIII dwerDischage ecdt GotSSMoakering QtS Assurance Plan QAP Date JLLK7.06 Revision lPage4I of 41 .33 .4 cnq cu-c/1 lSu sdosovnp/es 4-.u 0735 U-sdc jU-OO5 tt..Jeker c.J1_...i_.1 TSiIIitJT Tuthidity oriLt cplIcckc ping Rate CaLculation flow Rate QX in gpm Thnto evacuate two casing volumes 2V S160 ______________T2wQ ..26 Number of casing volumes evacuated itOther than So____________________________ If welt evacuated to dtyness number of gallons ŁvacUad Name of Cextified Analytical Laboratoiy if Other Bii rgy Labs________________ AuLU elide Jc/ c1.mpk c4i Comments Pt-r\uck r1HMI 5\-tJ ruAck ki1rcr h0 on s4r cuT-flp cnntr An IJc. eucn\-Rine iijlc il b-US4M$4\-INT 1kc recvkr tobD IrcAXtQn ojcXSc N5S b4 fcJlr Safl-slcS R.-k .c ZI c.4k roLc-cA4tn r4 2..ejA L\r1 Thc rc4c.pwmyc tatll ckr UI-rL .4 14M1 MAuL Cu L0tC2FCb caio Mill 6iaandSter DfiscSge lPciSt 6iouSntei MorkoSg Quality MnwancePian QAP MITACJHIMIENT II WIUUUflE MIISA UItANIILUM MILL FIIIEILITh EATA WOIItXS1HIIZET IITOR GROUIKD WATIIH Description of Sampling Event 1A j04cr rc u.n Sampler _________MithaihdinitiafCtrncr WoUJcu 1en. Date and Time 11w Purging ic/Ip./o1 and Sampling if different wj Well Purging Equip Used puitp or_bailer Well Pump if other than Bennet Sampling Event 5rj Oinrr 6-rouqiA U33cr Well Sampled in Sampling Event JAy Depth to Water Before Purging .2 Casing Volume WelkSl 5.31 .653k Well JA 36Th Conduetance avg 3320 sofMat avth Q4 1/ Well Water Temp avg ke3k Meikk4l$1 tuthzdity 14 Weather Cond LOMtCA CA u.ckS Ext Ainb Temp pior to sampling event Time 1715 MlPurget G4 TflpCOflS JalPurged I.S Conductance pa Tcmpemature Jo Temperature Redoxlp Thrbldity tei 2-I Redox Potential Eh Turbiditv Date 2.25117 Revision Page 40 of 41 Location well name M\2-3 pH Buffer 7.Q pHBffer4.O Specific Conductance qlg uMHOSIem Weilbepth Time OgSC GaLPurged.2..US fpc5 GaLPurged37.4S __________Conductance_______Conductance ________________________________ pH__L.C pH 10 Temperature Temperature .g9 Redox Potential Bk ..c Redox Potential Bk 237 tb ouSwerscigePermit Grouiwilwfl 2uteg QS$y Mnrance lt1ian QAP Date IL t7fl 1evision Page 41 of 41 Volume of Water Purged fpg Rate Calculation Plow Rate QJ in gpmn S160 _____033 Thneto evacuate two casin volumes 2V ____T2V/IYY Number of casing volumes evacuated if Othtr thæn tWOLJ.L7. If well evacuated to dryness number of gallons eSiSSE Comments Arcoe-en Oc 01 t5 iLinrr P31L d4 prfscial 4r UJC on4 -rum4 tjne qcn oolacc PkA4A cll iOMtnkkrjgphAt%6t %cMfJ1s t1tr1 j-octa-i L-.I-6kOR37 MeVq roc4Ł k73 ak 5QJ1n-V4k Ctc\.j.-S Name of Certified Analytical Laboratory fotherflalriºrg3t i4ats 4n-k \.3cs L4 sd-0c Pwegenattve Ailded dwdel A7fltAO1IMIINT 11 WIffIIITIE 1SA KEIIA1IIk4I ILL 1fllTh IUATA RSJHUEIT flR G1OUIII WATJE Deacripion of SanlinBg Event cX GSJLO..4c-GTh vr tjoh.r Location well uSia W.j .25 _____________________ 1.0 pH%ftr4 SpecificConductance qg iMROS/cun We$DØptli.A. Depth to Water 3efom Pging7 .0 C.onduŁSc avg 31 Casing VOiSme 1J Well S31 .653h .367hi$Wa4 r3rt Well Water Temp avg V1n1eb 4W Turbidity Weather CoS ftr .t4 Exfl Ant Tmp pfldrto Mmpluig eveht Time J1S3 -s MkflPWted 94 Thn SS Qal Lcirgehi thU .%rey7 k..pacdcauco a2q Temperature Pflfl1flThfIfl._________________ Rdox Turbidity .atp.tau.l4flaw RdoxPotenti alBh 431 Turbidity c1 time In GaLPurgedS1.dS Time IW Gai.Prged 71 Conductance p1 Temperatur 15 RCdOX Potential Eli Li Conductance 33C7 11 GSa Temperature ESoxPotenti .1 alEh -J50 MIII dwaerJD charge GmandvS Monitesg QtyMraePlan QAIP Thde 2.25.07 ievisiorr Page 40 of 411 NaSdirflitials 1ncr Date and Time for Purging fM /30k and Sanup11ing if different 1ym Well Purging Equip lEJgetA jSp or_bailer Iiump if other than BennetLJ Sampling Event 3rJ chACAcr 6-ro4 tAtrcr r4yj iple nSanplingEvent .M .$ p0 iffer 7.Q weJPm Qtiar Acusuace flea QAP flute if 1J7.O EeviSr ii ge41 of 411 Vthit of Water Purged jngPateCaeSation Plow Rate ibifi gpn Thneilo evacuate awn cnsn voiwues 2V s/6o 33 T2V/Q IS9 j4 NuSerofcaigVoiWSevacatedffdthetthÆætcUo 1.7 If well evacuated to drjiess number of gallons Łvacu Coiinnents Areaeb on MSJ CWAe3jjnt ttPfl R.rn 3-jq.c AQcilnr /J Pww t4d-....oV sc rvipks Lt 1C37 l6 /Lkosk .tetsPLo4ov4 jktcc 1A6 Ct I4I4 CjatJtip. Pcr4l1 A0.iX 3aHcceJY CIOc4 Name of Certified Analytical Lnhoratoky if Othe igyLt 4ivrn- ltutrc iIlcicA ntCSczJ-Oumt nnd 03 GrotSwaterDisthage PeESt Date 2.25.07 PeSS GioijSwtat Monitoring Quality Msuranve IFS QAP Page 4t of 411 AflAC1HtflENT WffiIWi1E IMHSA flANIILUM MHLL IIKELD DATA W0EIfSEET FO G11WUNII WAThII Description ofSatnpllingEvent 3rO Qua.ckr TeD kUDcttr AunuJ PLUrUM1L Sampler Location well name Mv Name and initials ntr HolUc tIk Date and Time for Purging ._J/fl /ok and Sampling if different vflt Well Purging Equip Use npwip or tbailer Well Pump if other than Bennet AJfI% Sampling Event rou4.ucL Prey Well Sampedin Sampling Event Mw SZ pHBuffer7.O pRBuffer4A 4.0 ____ Specific Conductance NS uMLIOSIcm We Depth lal Depth to Water Before Purging 80 RI Casing Volume 40 Well 1væ .653h Well .367W Condtttilnce avg S5 PH of Water avg Well Water Temp avg iS Redoa Potential ala Turbidity WeathSrCond Su.nni ExtlAmb Tenipprkrfqflmplihg event 3U Tune 14 Ca Purged fi Tithe Gal Purged nce 35 Coædudtauce ... pH______________ Temperature 91 Temperature Redox Potential Eh RedoPÆntial Eli______________ Turbidity 3didity Time GaL Purged Conductance Temper Potential Eh lure Conductance Gal Purged pH Temperat ROdthPotential Eli_____________ ia uudwaterDiscbarge Permit Groundwater lWonitoSg Quality MsuraucePlrni QAP lDa.te IL 17.06 Revisioa Page 41 of Volume of Water Purged When Field Parameters are Measwe j2jflthCalcdalion Time to evacuate two casing volumes 211 IU/4 T2VIQ Number of casing volumes evacuated if other than tie iv/d If well evacuated to dryness number of gallons evacud N/I Name of Certified Analytical Laboratory if Other Thali Buigy Labs aL SGPbIOS Thjszc.n ILiOl sir 1WS Or UcLs ticr Flow Rate in gpn SI6IP ath LUOCs iiªedlied commentsArrocA on cL ak 4O7 tnArr 1bIra\CI flrrccn-l 4r PramJce tcA ii cc% uetni u4t1 a0 cxn ifh hrva Mill Oaaandwater Disthage ftait GrotSwater lWoniloSg Quality Msurance Plan QAP ATJLACJHR4IINT ii Date 2.25.07 JRevisS IFage 40 of 41 WJHUITE MESA 1IJEANWM MuLL iltELXD DATA WOWLSJ1IIET flR GNMJIkJD WATER Description ofSarinpling Event .uaAcr rnunck u.Ucr CttY\k_ Sampler JLocatioiiwellname MXx NaSÆdiniliafs1trr RH.kt Date anal Time for Purging 1.5/4/OS and Sampling if different .w 4- Well Purging Equip Usert _puthp or_bailer Well Pump if other thaga Beanet v/ Sampling Event w4cr crcsb/Prey Well SanipIdinSamplingEvent AAU 32 7.0 pliBuffertO Specific Conductance 9Ct uMflOSIcm Weil.Pepth s3 Depth to Water Before Puging Ti Coudtttance avg 35 Casing Volume 49 Well Ai/P 3WeJl. pH o$kateavg1 CSt .653h 367h Well Water Temp avg IS Redbteith ES LU Turbidity Ext Mnb Temp prior to sampling eentWeflherCond________________ time Lutged.Qal.Eurged Conductance Conductance pTL. Temperature/ Rtial Eli_________________ -Turbidity__________________ Temperature Redox Potential 13h Ic Turbidity_________________ Time Conductance Gal Purged________ _7 pH Temperature /7 Conductance________________________ p11 Temperature pH Buffer 7.0 Time________GaL Purged Redox P4nthtL Eli RedoptEil EhL 6rouadwater Discherge Permit Date IL17Ats iievkiun Crouudwater lWouitoSg Quality Msaraace Plan QAP Page 41 of 41 Tvabidftty________________Tnrbiditjr Volume of Water Purged ______________ gjping Rate Calcution Flow Rate OJ in gpm Thnto evacuate two casing volumes 2V 8160 ________________T2V/Q j.fl Number of casing volumes evicuated if dthdr than twO nj/fl if well evacuated to diyriess number of gallons evacuatd______________ Name of Certified Analytical Laboratory if Other Than Thiergy Labs MTh aSe $SIi circle eVdwte tlisias specified Filtered dt41 Preservative A$q circle VOCs Nutrients HeavyMetals Au Other Non- ON Tht 3x4GinI .iOOml 251St 250Ml 111 I1204 liMo3 NPkeservaliveAddŁd Radiologics irossAlpha Other specify r- 1000ml Sample volume H2S04 iS Irrnrol CnofOC If proservative is used Specify Typnd Quantity of P$servtive Comments An4ter Oc siL oJ ctstcc 12..kcr W4.AJ4flITZ.nrr tn1Hltf tLta r4 coeeij La ILiac ua .-.....a.....-.. ....J............................. Mi ouaSater Discharge PeirS Date 2.25.07 1evision Groendwater Monitoring Qaality Assarance Plan QAP Page 40 of 41 ATTC1HIIMNT II WJWII1IrIE 4flSA UflNIIffJM MuLL FKfffl DATA vvonclHflEn 1Th0R GROUND WATIER Description of Sampling Event ro tAvuk .3-rr Sampler Location well name MJ ri WaS and initials incr I-IC ii ft Date and Time for Purging %i JoA and Sampling if different tv//4 Well Purging Equip Uset ..pwtp or_bailer Well Pump if other than Bennet SamplingEvent2i3 fltca.rktr 6-rau4J Ucicr Prey Well Sampled in SamplingBvent Mv-s pliBnfferl.0 11 pHuffer4.0 Specific Conductance 9S uMHOS/cin Well Depth 95 _______ Depth to Water Before Purging Casing Volume 1k 419 Well Ps.W9 .653h Well .36Th Condnttnnc airg__________________pH of YVateiavg ii Well Water Temp avg Lf ztek Pdtenttal llh Ic Turbidity Weather Cowl Me 4-Ext Amb Temp prior to sampling event 2.1 Tune In Purged 13 Time IZV Gal Iurged Conducance Conductance 10 p1 Temperature i5.S5 Temperature 3ndox Pote in Hi Redox Potential Eli ZIC Turbidity Turbidity___________________ Time Gal.Purged Time 310 GaLPurged S4S Conductance JC Conductance co pH 7.l.C.5 pH 1.114 Temperature TemperatureS .S5 Redox Potential Eli_______Redox Potential .t Mill Groumdwatez Discharge PenS Uroawaten Moultonkig Quality Assurance Pine QAP Date 11.17.06 Iaevision Page 41 of4a nah Turbidity Volume of Water Purged W4Ail ggygflte Calqufation 1ow Rate in wa Time to evacuate two casing volumes 2V smo _______________T2V/Q 1721 /X1- Number of casing volumes evacuated if other than two If well evacuated to diyness number of gallons evacuatd V/il Name of Certified Analytical Laboratoiy if Other tian Energy Labs 4m0-k0 3J L0 d- If pmservative is used SpecitSr Type and Quantity of Pieservative Comments 4rAic en nts itinrr I1JIJCwI prcsciJ cor puc untk -curn u.rn he-a4 uso PAr4A cII 4r .O Asnurc3 uiuc mtt I3s0 hAtk smples tXcn .3 t-19O2 3cAcr dtr rt\nc 9J%C Y.................h............J...........................................-- AflAC1BflMllEiT Date 2.2107 iRevisioc Page 40 of 41 WiIffulrffi MESA URL4IFJTh4I ML IFHIIllL1ID DATA WOillhhlET 1ff bM PUID WATJ Decriptiort of Santpiagent cX\J.ckc4c.r ron LIACX ..Smpfrr Location wSl name Wi3 ..21 NaS and initials itrncr Wo1lic-u tpc Date and Time for Purging tci 17/OS and Sampling if different. Well Purging Equip Uset uthp oc.jailer WeIUurnp if other than Bennet Sampling Event 2H floAcr -rocA U2L\tr PIv Well Saniped in Sampling Event M3 Ia It Pc1T4 Specific Conductance 94 uMflOs/crn .vllpptk jc Depth to Water Before Pugiu 77... CoadhOtance avg 4Od17 1S Casing Vok me Well ai .653h .5 Well AJIPr .367h pti 6SaW avj /7 Welt Water Temp avg Redd1k4tMf Turbidity Weathertoild.______________ExtAmkTm1thii4amjjiæieSt .3O Tune GalPurged ..3\L. TiejC GalPged ICA Conductance ConductmceL1C pH S71 jPIt..Y Tern1 ierature .3 Redox Potential Eli 337 Turbidity Temperature RedoxotCttis Bk 3T Turbidity pH Temperature_IS .37 Conductance 14 Ct7 ll 5j Tempe rature .\ Mill C-wxSlwater Discbne Permit Griouadwater Moniitnæag QEmlity AssaranceJFlaa QAP pH Buffer 7.0 flnndiretnnce o\1 timeO GaL Purged .Lt Time iAoC 3aLPurged Redox Potential Eli______________Redox Potential Eh_____ ha-rb tethiscbarge ftimS Gm oidtouag QtSky Asswance Plea QAJL 17fl6 lievkion Page4l Of4fi Volume of Water Purged ppiufltate Calculation Plow Rate in gpm Thnoio evacuate two casing volumessi______________T__2V/Q f7 M4n Number of easing volumes evacuatedif other than two Cj Yf well evacuated to dryness number of galions evaciktE 4rkcv 3J Mnti PI2 c-cr ir Purcc cdhAt$C1- OLaf flrokj- Ctfl OkJIQ lqz ur4ALcJI II saopks tVc1 3JkLn icnni scA-c4 c5 rnmmeni AeriA rn t1rtht Iannrr .LlILA rr-flrmy 4j pi.rnt Mill GwaterDkthuije Petiull GtandvvatorMoniteriag QMaWMartmce Plan QAP iacation well name M\ pH Buffer 7.Q TimeUL GaLPurged R- Conductance pNBnffer4JL Time IISS 3aLPurged S.05 Conductance ________ pit Temperature 15 Redox Potential Eli L%a PH TSaperatur kidox Potential Eli 9-il Date 2.2107 LeSion Puge4iDof4I ATTACffthIII1NT ii WIIffU 1MllSA IIMAIIIHUM IMIIILL KJIIELD DATA WO IRIIEIFZ MThR GlltOU11D WA Deecription ofSanlingEvenQ ac.rl-tr Gm un tO0C SfllPkr -____________iMiæSsicic Uoilictttft Date and Time for Purging j9.q/c and Sampling if different tv/A Well flqing Equip Use Spor_limier iI$rnp if other than Bennet Sampling Event rJ Gkorkv rocwA i4-cr .W$.$$c4in .$arpJingEveiit jML Specific Conductance Cjqg uMflOSftm y4PPt Depth to Water Before Purging ios IS.63 -o Casing Volume 41 Well 5CSC-70 .653k Caduthnbeatg 1YC2 3WeIL fl\367k CSi Well Water Temp avg iQ l4uiti4 h936 Tuthiddy Th Weather Conci ScthhnA h-Exfl Auth tencjsilniphgflent 2S Tune 1045 Ia Iifrgtd 45 Thpi1lfl c9a1 $rged Jsa ConducSce 43nductanee91 TentperatUw iS.I Redox Potential Eli .q Turbidity TemperahIS.D. Turbidity lu-rb GgoM4wDiscrgeJPenJaii Date Hi 7.06 1evkiaa 11 Grourdwfl lWoSoSg QSKy Marraace1PS QAIP Page 41 of 41 IL Vonme of Water Purged jgping itS Calculation flow 1ate QJ in gpm Time to evacuate two cg vomnes 2V sio s33 r2vI@ %i Number of caaing vohnu evacwAtedif dthetthan So juf/ kfweftevacwiaS to drpzss numberof g$koÆs ŁtithI v/A Name of Certified Analytical Labomtoiy ito P4011 Groaad1witei Dischae ftrS thouathwater ItIlonitoiiag QMffaiwePan QAP Dtte 2.25.07 iReWsioa iPage 40 of 41 AflACERk4IIENT W1FllJTIE E4IISA UMJ1IffJ1 MuLL JFIDLUTh IIDATA WO LSffIJERtT IWPM GIIOUNII1 WATE1 Description ofSnmpligEvent Ojc..4cr roar\u1A-r Sampler Location well asic 2.1 NatnØ afid initials ecrncr IL i-i Date and Time for Purging LU and Sampling if different Well Purging Equip Useck %jmÆp or_jiler WIi hmp if other than Rennet ED Sampling Event ti 1Acrr 6-roupck UOicr Piev Welt Sampled in Sampling Event Mu 30 Specific Conductance jqg uMHOSicm Wtheith 12.1 -.-..--_______________ pH Temperature tE Redox Potential Bk Time \5 Conductance GaLPurged L\ 37 pH LL Temperature RedOxPotentialEh pH Buffer 7.Q 11 pHufr4.0. Depth to Water Before Puging IO .14 CaninE Volume Well S1 .653h 3Well .36ThHAVavŁ3-1CondtEctancearg31 Well Water Temp avgJ5 Redx PJIendal turbidity ii Weather Coed Extl Ainb Temp Nior to samplnfflvent X1 Time ILCYS CalPutged Tiflie IflO lalFurged ii4 n4f9flcondcanceL19 pH L30 pH.23 Temperature Temperature IS Redox Potential BIt 51RedoxPotentjatBk.57 Turbidity 4.3 Tu.bklity Time Gal.Purged I.4S rnndivrisnr ci1 cji ......L.... Miii 6Jiscmrge Permit omfreater MoaitoSg QmJy Assmaace Plain QAIP JDte H.17116 lRevkican Page 41 of 41 Volume of Water Pwtt ping Pa Ca1uon Flow Rate QX in gpn Time to evacuate two casing volumes 2V S169 $33 T2V10_______________ Number of casing volumes evacuEted if dthbr than two 4t/Ifr If well evacuated to drjmess number of galio2is evactSr Name of Certified Analytic Laboratory if Other mfdry Labs Ar1frkan csJ Lc4 Comments Ar 5aInoMitIa3 rie st4e 0X ict1Steu4RAflherjQn Pr2c LA t-L-1-th tncr kLosc %MO -loiltc\cu4 PkAqA Ak prQ.J C1I 4- So MDleS Is icfl 3cr AniHRCcr fl-ccna\euk yo-rc\C/-fl .tr1o -rk kS aA 1A.5V.J set-.RCS 9. I- I........._... Mill Gadwn1cer 1DsthargePecmft Dete 225.07 JRevªsior Gioaadwater Monaitealog Quality Assurance Pim QAP Page 40 of 411 AflACJHIMIENfl WIRIIIT1E 11I111SA 1URt4NMIM IILL 1IliELBD IthATA wonc1HllFir FOt G11OUN1ID WATIIt11 Description of Sampling Event t-f GTh VYtJ LJtC Location well nathe AM _____________________ Sampler _________Jkan lid initials Date and Time forPmging 54/IC /2.COS and Sampling if different iU Well Purging Equip Used un0p or_bailer eI Pump if other than Bennet Sampling Event ZAGi4cr Th4 k.A\tr fey.Well ampled in Saipling Event t/i pflilufferl.0 1.0 PH1ff Specific Conductance %U uMflOSicm Wpth Depth to Water Before Purging Ti ..S Casing Volume 4t1 Well .t .653h 3We1l .367h CondtaeSnueavg 4Lfl ptIoteravgw 75 Welt Water Temp avg LI 41 Re4dx IofMkkLflh 77C.Tubidity Weather Cond Sunn Extl Amb temp prior to samplng event Tune Q5C1 Qnj Purged c13 TIMe n4O Gal Jurged IS ontiutanceCondSnce2Js3 L70 Temperature Redox Potential Eli 214 Turbidity Temperature Redoic oSn6alEh17 Turbidity Time 1000 Conductance pH GaLPiurged i%I 2.O 2150 Temperature 14 Time iC2S Gal.Purged S- Conductance at Ch pg t7g Temperature 44 Redox Potential Eh 17 Redox Potential Eli 9-7 to.rb Volume of Water Porge wwnibwL st.L gping Rate Calculation Flow Rate in gpm Time to evacuate two easing voinmes 2V.33 T2VIQ ia Number of casing volumes evacuatef other than two If well evacuated to dryness munber of gallons cvaSitkt N/i Maine of Certified Analytical Labomtoryitothert wigy Labs 4vfltrcan \3cs Of Comments f-AntŁd J-037 cAcrv3cc Aec on sc xnic 1Liier 1JIchui .2t0CJ4 Pra onjŁ pCS sr4A Pwcit cL1 L0ZS Th1\tf ex1 1547 rTh prcici214-puc on4 cII knrJaA Y %cuvlpes txm tWill.-wlwateiMisctwrgePeruthi 11U7.O5 Jevkion QuiyAnflarance Plan QAP Page 41 of 411 TSiclitt Turbidity.__C Mill Gr dweaerDischaig Pcjjrak 1Dae 2.25.07 Mevision CirnSvter Moaiitothg Qucllry MaurancalPkmn QAIP Wage 40 of 411 AflACllIIIMflENT1 W1FIUIT/E 11SA AMOJIJI4I IMIIILL ILThIUIP MTA WOfl1SIIET hi\0tGROUNID WATIEIR Description of SanllngEvett Jstortcr rOUv\CioAtr Locationwelllnarae M\3C NSiijdithtials ltrtcr Date and Time for IPurging /4 /odl and Sampling if different je Well Pinging Equip iLJSetk Spor_bailer WÆtump luther than Rennet Sanipling Event tP fluoAor 6acwA uo3tr My W41Saned in Saniplingflvent MlAH pliBuffer7.0 it puff.44 yeY Specific Conductance j4 uMEOS/cin WCftDOPtlL Depth to Water Before Pnghig 77.49 Casing ohunS 411 Well Ujh .653h Well iiv.-367k Condfithnte avg 2J G5 7rn iij/ Well WaterTenip avg Six$ttk$i3t7 Turbidity Weather Cond srcMeJ Cl ct4 Extl Auth Teæip tqk tq sampIiti eieut 9$ Tune OSd3 Ual Purged Tl4te r.goC aI4uigS Conduciauce 318 Conductauc i35 mnstat.waLrc t4 flTemperatureN-id RdoS1S 34 Turbidity Time flrP GaiPiired 12L1.13 Conductance L5 PH Temperature Potential Eli 333 ateaIEFI.iaatnnb Redox Potential Rh 33 Turbidity Conductance di7 pil g Temperature IlØdoxPotenti 1495 alQ3b Time lOiO GaLPurged Z7.S lu-rb MIII waterThthargeftMt Gmuothrictcr MoakoSg QSIIy Asnarance flea QAfl Jtate tLJl7.06 RevlsSi Fage4l of4JL Tuxlædliy Volume of Water Purged pinflate Ccukdon flow Rate in gpra ThIIcIO evacuate two casing vohunes 211/ SMff1 _____________T2V/Q jgt Mn Number of casing vokmth evaÆtteftdths than Sd Jf well evacuated to dryness number of galtoiii eaeitej N/A- Name of Cernfled Analytical Laboratosy if Other Than Hnegy Labt4ft4eJ-Lqb Comments _AAuk en AiiIi IAArilna Cntirr UJLc1cir cDCSaaI OuYit -euen thnh9rtcn n3-opiic ar4ŁJQcnr it-O nurL 1Dt cnM hws Ld sanipks tcn Ce Oil denr Thtosjfo4 Nxjc U3rthhkI P.41-t ra.21o Jas ....%.....fl..........-........-.._..............I...... .........-.-....... MiL DKOSWaIeI Discharge Peith otSwfl MoaftoSg QaaiFy Assurance Plan QAP Date 2.25.07 aevithoa Page 40 of 411 W11HHT PAEA AWIJIW 1flIILL JFflIID DATA WIIS1S1Efl IFOR GROUND WADR DesSptEon of SanliagEvent Qt.xcA-c.r ro uhr Location well uSe M3 3k Sampling Event OcrLr G-rotwl u3tcr Prey WeP Sampled in Sampling Event Mta pHSiffcr4Q ..3 Specific Conductance 9tS uMflOSIcm .WellDØpth- Depth to WaterBefoivPuging 4\AS Casing Volume 49 Welt 3q 1U .653k Welt .AJ/.36Th Couduetane avg HqaterayjY- Well Water Temp avg 15 Reddk t6itiii Turbidity fl Weather Cond St.w4 I4otOo Extt Anb Temp ior tq sampling event 33C Tune OC ml Purged TOpe-Qal Purged Cl Conductance I5 Conductance I52 PH Temperature_IS 13 Tempeiature 15 Redox Potential Eh Turbidity a3RedoxPoteitWEi Turbidity F2 TOne P49 Gal PurgeJTh Conductance.jgj Time 144C GaLPurged fiJ\ Conductance tR IS .1s Redox Potential Eli 70 ATTACJIItRWJT Sani$er NaMe ahdiuitiaftAcinrcr 110 11iaij1 1t ft Date and Time for Purging 25/10/OR and Sampling if different tg Welt Purging Equip Used juffp or_bailer Well Pump if other than Bennet pH Buffer 7.0. pH Temperature PR 73L4 Redor Potential Eli 359 a. IMlill Gre udiwater Dischaige FeaSt lDate H.17JD5 2oSS Grouuniwalcer It6ionitoSg Qiwlity Muarrnace Plan QAP Page 41 of 41 Volume of Water Purged ping Rate CIculjton Row 1nte QJ in gpm Thneto evacuate two casing volumes 2V33TZV/Q i7 ML- Nusubar of casing volumes evacuatedff Other than two If well evacuated to dryness number of galloiis Ovactd N14 Name of Certified Analytical Laboratory if 0th riSThiÆryLabs 4th-0 3esc Lak Comments ArAte bfl 1L.rnrr i1Jtd1 flrcscz4 rot-aflC on4 9ino uen erjcwl I3L5O BAr4i\QcII tc5 Pct fitk R-O fl snipkS iixcn ttcr LAror Tk6 b04 ft-ac 47 Ssnttt A\4s tC i.r/mfl A4 LntUflfti -J Cl MOO G2adlwater Disthe PenS GinSvatei rdtoriag QuviftyMseranoe Plan QP Dete 2.2107 Revision Page 40 of 411 AflAC1Hll4llENT 11 WJFIUITE IMUESA EJIOANThH FVIIIILL ffiRELH11 DATA WMCSREJff flJO GOROIIThJ1U WAflD DescripQioo ofSampling Event Qsjxrrc.r G-ro un .Oitr Location well name 4\iS Date and Time for Parging /4 AZ and Sampling if different__ Well Puaging Equip Uæeft 4S or_bailer flThimp if other than Bennet ia Sampling Event 3P OcoAv 6-rounJ tAkr lEt We SamedinSamplingEvent Mu- Specific Conductance 9118 uMMOSIcm WST.pk J3O .. Depth to Water Before Pugin Casing Vlume weil 3k .653k CoSt.ŁtSeaig pc2 WeLl Water Tenip avg_lb 3Well 36ThE1VaVgL kSdk M0I4kA gqpr Tuibidity Ext Ainb Temp piOth to Sdmp1mgventWeatherCoatPo-c LI -.1 .-.--- Tude 37 qa1Piwd TseQdOL 4.GigS 9JL ductS Conductailce p11 Temperature C7 Rdij1oIpS4____________ Tnitidity -.---..---.-t_ pH 757 Temperature RedoxPotentialEh 40 TUtbidity Nathaædiæiialtjc.nytc.r I.Io1ILAttH pH BOffer 7.0. Time 1330 Gl.Purgd 2-1 Time Rig GaLPurgeCb.3 rnntnra fl Conductance_______ PH Teninerithui .3 Redox Potential Bk 47 RØdox Potential Bk Mill 6weichargePeit Date kLl7fl6 MovAiioo ii QdftyMuancePlaa QAJF JPuigp4l of 41 ThM Vobaue of Ws Fwged ping Rate Calculation Flow Rate 03 in gjua Tinaeo evacuate two erasing vouuics 2.V.33 T2W 2f7 Mk Nuuibeg of easing voluinS evaØuatedif other ths So rrst evacuated to dryness number of gallons evqi //4 Name of Cerlif led Analytical Laboratory ubs $iltlaiyiSe MIteSI Preservative Mded ras ai s4aei ___ tiiitohiitt 4y ffi N1OfliE .Y 25tfliL COmments 4rrt on r7 tmrr 1-1GIICL4 presctJ-putxnAtun4tJrc\tnC4fl ap4 cli 4rmoMnPar3cOilkIkS.ILIO hAtk sziiiples -c4KtnLcJcetQt _oek-cr 6kar l1rtcdo4 VM Pc.4-%-IJ crrSttA itIc.A r3 mnrLc lfapreservative isted Sliccify and Quantity fPlie MUll otrndwaterDMdllwxge PeoS Jate 2.25.7 RevileS GrOUJIdWateI Monitoring QtaallityMswance Plan QAP Page 41 of 411 MFTACIHIIt4IIENT W1KUIII1 R6IISA MkJMThJII 1flKLL WRIILU IUATA WO1ffiKSJET IFOIR G1OUJkJD WAWR lDascæpllioiit of Sampling Bwntf CsicAcr Gm vn ti u-s3-AAor.4Jk Sampipr Location well name Mi 32 NSa ad initials itncr il ti-II Date and Time for Purging Vu tios and Sampling if different M14 Well Purging Equip Used ..athp or_bailer WŁllPiimp if other than flennet Sampling Eveut2f Onwhr 6-r4 \Jcr Prey Well Saniptcdin Sampling Event MU IS pflBuffer7.O 11 Specific Conductance %k uMHOSFcm WeWDeptb.c .132 Depth toWaterBeforePuging 77.34 CasIng Volume V4 Well 3.O\.653h Well A//-.36710 CondaetanŁe avg 52.dfjktefavg O1 Well Water Temp avg 15 -i Rjdx oieciipi fliI Turbidity 14 Weather Cowl________________Extl Mnb Temp prior to sampbg event Time 1IS GaIPwged qq TiMe Gal Purged 11S5 Conductance 00 Conductance tj pH o-O5 _________________ Tempettum I4.tO Tempenture lS9 Redox Potential RI Redox Potential Eli Cl Turbidity u.S Turbidity LH Time 13C Gal Purged 2J7oLL_Time IS3C GaL Purged rnnA.entaana AC Li tS7 ..LYflflA%JU4JLfl PH Temperatu. LcS -i .ck Conductance__________________________ pH Temperature Redox Potential Eli Redox Potential Eli_________________ Li GSwaterlDischarge PewS QLialicy Manice Plea QAP Thtlbkæhr ThAte 11.17116 JRevkioga TmbiSr_________ Page 41 of 41 Volume of Water 1rged MlSflate Calculation Plow tWe in win S/60 _____ TIme to evacuate two casing volumes 2V T2V/Q .JS Mn Number of casing volumes evacuated if other than tvo rnmmenk ArrtA 1- tan Iw4fl Ar4A cti 4r t5.O Purcr cnW kryiO ffl CV scyvipks txtn cAk 34 L4TI-aL r3M 3c4cr Los oit Sc LY CI$j de1coqhpkiJ3cA54wc\i1 rkc if well evacuated to dryness number of gallons evacOsthd AJIA Name of Certified Analytical Laboratory tweæijnfliiiimjLab 4rincon L.kJ iac .4- LIIJT.A ntescml fluThtvflrr Mill C-reunSater Dischrga lPerSt SwSMoiiitw1ng Quality Aasarnce Plan QAJP ATTACJHIIt4IINT WJfflIITE B4RSA URAIJUIUM R6IIILL WllEIL DATA WOM11SIEXP FOR GROU11llh WATER Description Qy.ar.r -ro /uQs-t4.tTht .$mnpler Location well name WjJ NaMe aiiÆ initials 1tnci- 14o1kt Date and Time for Purgbg cc /CA and Sampling II different it Well Purging Equip Uset iuthp or_bailer till Pump if other than Bennet Sampling Event fl.j1crLr -ratitA tAixr Priy WelUSampedin Sampling Event MU tb 1.0 pflffar4.O 40 Specific Conductance S8 uMHOSicm Weil4pth Depth to Water Before Purging 77 Casing Volume Well 3C 11 .653h 3-olk.yj .36Th CondntSnce avg LI 1134 $eqai 15 Vi -4kVi Welt Water Temp avg 19 Redoi Pdtihmal E6 Turbidity u\ Weather Cond Sxnt\ Extl Auth Temp prior to sauipluij event Tune flSO CaIPuted.L3S Tupe j2O GalPUrged i3 conitict be CoæductahcØ pH pu1 .1C Temperatine_______Paw.sm..nf..ra Redox Potential Bk .1 Turbidity-I.L Time GaiPurged j.g Conductance 73 p1 L..t7 g.m Redox Potential Bk 1610 taiiptitataw Redox Potential Eb Turbidity Time 1330 Gal.-Purged 33 Conductance 17 pH Tomnerature j14 C5L RedOx Eotential Bk 159 Date 2.25.07 Revision Page 40 of 411 pH Buffer 7.0 io tb awMw rJDisdllarge PeS JDae Iii7.O 2eSioa Quality Assuraave Thu QAJP Page 41 of 41 Tanrbiiday Vokuise of Water Purged WP1Wd pilig1 CaJcjatioi Now Rate OJ in gpm Time to evacuate two casin yolumes 2V S/6JJ .33 T2V/Q p1t1 Number of casing volumes evicuated ifdther thaS two If welt evacuated to diyness number of galloii eacOatS /v714 Name of Certified Analytical Laboratozy if Oilier Than Thwrgy Labs______________ COInIXIOUtS ArrnkcŁ fl II5 1t-nrr F101I14l DteScA ptiltt onel Saw1flO h-ugo ar4A 1tcII tao Purc%c aea knsio Fut o-%4MflkS tgcn Ge ISWa tJ- Scw-IA t4cr dcjCc I.14-tt Tkb\rtz i3cAsx un Mli11-Groundwater Thucharge JPeniuft Groundwater MothtoSg Quality Mcinrance PS QAP ATTAC1HLMIINT WJJffIITIE I4llESA VPAN1lff 31W MuLL llflhiffLD DATA WOlKS1BllEfl FO GIWUND WATER Descriptoti of Sampling Event v.arcrLj rrca4.bcr3 cA-j MvcusfAAW Sampler Location well name /Vkti.J Name aEd initials twr J-Jpiijq.j yj Date and Time for Purging 8/i i/cf and Sampling if different va Well Purging Equip Uset iputep or.jÆiler Well Pump if other than EennetL Sampling Event LcAir14 Prey Well Saipped in Sampling Event pIBuffer7.O pH$uffer4i Specific Conductance uMHOSIcm Wlepth Depth to WaterBeforePurging 71.34 Casing Volume CV Well 3C..O1 .653h Well 361k Conductance avg 41 pH oftater avg OC Well Water Temp avg j5 OH Redrn Poteitial 13k tE Turbidity 14 Weather Coed_________________Ext Amb Temp prior to sampling event Tune Gal Purged_______ Conductance________________ Time Gal Purged Cnductaace .... Tempenthie Red P6tential 3h bidity TemperatureV Rxftial Eh_____________ bidity Time Conductance at Purged__________ PHV Tewe__________________ Conductance__________________________pHTem___ 1iate 2.25.07 Revision Page 40 of 4ff Time Gal Purged Redox Potential Eli________________Redox Potential Eli______________ 1141i111 Groundwater Discbarge Permit Date 11.17.06 Revision Groundwater MOIutOnag Quality Assurance Plan QAP Page 41 of 41 Tudir Turbidity Volume of Water Purged 3L gpingRjttc Colcuithon Flow Rate in gpni Time to evacuate two casing voluqies ZV T2V/Q gg /Ai Number of casing volumes evacuated if dther than two If welt evacuated to dryness number of gallons evacuatd___________________________ Name of Certified Analytical Laboratory if Other Than gy Labs 4iy.tr ICOn kD alglawll dwclØ Comments ri4water Discharge ftiinit GroiSwateir Monitoring Quality Msairance PS QAP Date 2.25.07 ReviSe Page 40 of 411 dox Potential Eh_ AflAC1BIIt4IffiNT 11 VgfffDIfl MESA URANIIifIM MR IL RHflI DATA WOflSIHflEIET 1PLN GR11OUDID WATER Vesciiption of Sampling Event rrw nck Irrs..c /knfltty $amplr Location well name tkt G5 WaS and initials I4 It Date and Time for Purging tS q/CY and Sampling if different ji Well Purging Equip Used ..pinp or_bailer Wil Pump if other than Bennet Sampling Event Qtxc2-c 4otnA t4 Prey Well $arnpled in Sampling Event Mb3 cS pilBuffer7.O to pHBuffer4.O 40 Specific Conductance qqs uMUOS/eni Well Depth Depth to Water Before Purging 77 Casing Volume Well .653h Well .36Th Coiidittance avg of Watr avg IS Well Water Temp avg LI 14 RloxPoMntial Si WI Turbidity II Weather Cond_________________Ext Amb Temp prior to sampling event 31 -4 9c .- Tnne Gall Purged_______Time Gal Purged conductance_______________________ondvctance_________________________ pH pn .7 Temperature Temperatum Redo79J$h Red/Otentiat Ph___________ TurN ity Turbidity Time Gal Purged Conductance_______________________ pH Time Gal Purged Conductance nil /7 Redox Potential Ph________________ _.4. 14il111 oaathvatecDiscSge Pemdt Date 11.17.06 Jitevisica Grounthvater Mosioring Quality Msuzance Plea QAP Page 41 of4l TSid Volume of Water Purged ggjpjpg$ate Calculation Flow Rate QJ in gem Time to evacuate two casing volumes 2V S/69 .33 T2V/Q Pk aI Number of casing volumes evacuated if other than two If well evacuated to dryness number of gallons evacuatl Name of Certified Analytical Laboratory if Other TIS Thiergy Labs /A ______TnrbxdUy__________________ SiIMsaa Comments Mill ouSwalrer Distharge JPerniit cro3Mnd water Monitoring Quclity Msnnnce PMn QAP WlfflIfl 1MlllSA VEANffIJM MLL PKIIQL2II DATA WlRffCSllffiUfl FO GROEThJID WATIER Description of Sampling EventS Ot.zxr1rer rOoj\ck u30-cr Location well nme tA\n it .4 Date 2.25.07 Pevisioa Page4Oof4I AflACJHIMNfl Sanjpler NaS afidinitials Ttn-1T11 Date and Time for Purging _s/2 /pg and Sampling if different wA Well Purging Bqui Uset jwp or_JiiIr WilPump if other than Bennet Sampling Event Qu.aJerk Lx LI34 Prey WeJl $ap in Sampling Eyent M4 ti pH Buffer 7.Q Specifle Conductance 1t ul\WOS/cm WeliDepth iN .J pHOffersLO Depth to Water Before Pucging Casing Volume Well 3039 3Well Condtttane avg 734 Æ61Vttiavg .653h .367k .14QL Well WaterTemp avg ReªxP6teitWAfl -170 TirbidiLy 32WeatherCond94ExtlAinbTemppzortosamplqigevent th1Puied______Tigpia GalPurged ondctance aductauqe.. PH_________________________ I- -- Temperatwe Temperature RedoxPoteni3Eh$Redoxteæuil Eli_______________ TurlÆity__________________ Time Gal Purget Conductance_________________________ pH Temperatare Time GaL-Purged Conductance -- Tenweratu1 R.edox tial Ek________________ nfl 2doteufial BhUL gSwDIschargcPeruth Date 1LU/O6 Revwicw GrouMwatea Qwaffty AsmraaceP$au QAP Page4l of 41 Volume of Water Purged pjgRate Gale Wation iow Rate 03 in was S160 _____33 Thueto evacuate two casing vopnies TV T2V/Qt JfcL-1 1-41 Number of casing volun es evacuated if dthbr than two_ If well evacuated to dryness number of gallons ºvaStI Name of Certified MmlyticalLaboratory if OtbeFthiin mieigy Labs 14\iwrrtev Otsf Lc .\OC- Ij TailS fcjŁ jamvde.Vdume thidf%Ttdth tWsŁlflØdrczbelow lEiltered _fl Freserwafflve Added VOCs ttiStE 3i4Oml uothi .- f$ BC t$%O Ct Heavy Metals 2Oth 1Th103 AU Other Non- Radiologius 250 nil .WU. NoPteservahvfldded GmssAIpii Otherspecify fJ9 Saniplivolume Cij /ICtl tjrrAOfje Ifapreservative is Used Specify Typ Quantity of Piese æÆtive Comments -A AI\\fl j_1W \A JJ\4 LJ--R_2J v...J Mill C-i nrhvater 1Dsdaaage Peniait Cwanrlwateir MonitoSg QuallityMsnrnce PS QAP Sampler LDcationwelllnSe MU IC NaiØaSinitials Ttth-fl61IL Date and Time for Purging /3jj/Q0 and Sampling if different Welt Purging Equip USed buthpor_biler TºiliuipifotherthanBennet Qf Sampling Event Q.ikdg iLhI Piv.Wel.$nped in SaluplingEvent MW 7.0 pHufler4S..0. Specific Conductance uMiOS/cin .WeitbØjnl .. Depth to Water Before Pugging GV74 Casing Volume 40 Well t3oaO .653h ..3Welk Al/A .36Th Coaduthnce arg c1 7xc ofktt akg.c Welt Water Temp avg .a Jteddk PitffiM$4 15 Turbidity WeAtlirCond crM tb4 Edl MEbL tiiiiP nip1fleht p4t Time ml Ptngeci_______Time 9a1 Purged Conductaoce ..Conductance_________________________ pH .. Temperature 777 Date 2.25.07 ReviaS Page 40 of 41 ATflCllMllhi1M VgflIUMI MESA UJIRANINIJM MuLL Yf Wi DATA WPSIHIIEH1T FOR GROU1kJJID WAThIR Deacripthn of Sampling Event QM4crb nnwickJssr Qu.adcr pH Buffer 7.Q Temperature Rtil PnridviJ Red iw dihr nil S.-.-- JWA Gio dwat Thsdthtga ftk-St Date 1LIL7ft6 Revikaic igdwzirur Moultoriag QSity AaauraacePliaa QJ4P Page 41 of 411 Toidfiy Turbidity ----- Volume of Water Purged giuggte Calculaion Now Rate QJ in wm Thnet evacuate two casing volumes 2W $160 _______________T2WQ 2i3 Mn Number of casing volwres evacuated if dther than tb Lt If well evacuated to dryness number of galioii evAcUtt A1//4 Name of Certified Analytical Laboratory if Otbeit %LHIirgy Labs______________ Comments DUNDL TabC Mill Groundwater Discharge Pek-ash ovjulweter iWoaitoSg Quality Assurance Plan QAP Redox Potential Eli d.dl Date 2.2517 Revision Page4Oof4I ATTACklt6IIENT FIITIE MIESA URANIUM M1.ILL FBEW DATA WORJiSJHflEET FOR GROIThID WAThR Descripon ofSamplingEvent 144tk G-otAn t4r TS-d Sampler Location well name .Ai3 -1 Name aS initials it71 jJ Date and Time for Purging 01 and Sampling if different vtTh Well Purging Equip Used puthp or_jiailer Well Pump if other than Bennet YE Sampling Event ti Prey.Well Sampled in Sampling Event vat- pRBuffer7.O 70 pHBuffereLQ Specific Conductance uMHOS/cm WelPfl .12.1 Depth to Water Before Purging OR Casing Volume Well II .653h ..Well Th .367k Conduethnee avg pa of Water avg t9 Well Water Temp avg 19 RedbxPontW Ehj Turbidity Weather Cond Sr Cl ok Ext Auth Temp prior to sampling event 2t1 Time C9O Gal Purged Time O$SO Gal Purged isa Conductance OC\..Coæductfflicc 49 Temperature ILIAI Temperature t4Ci7 Redox Potential Eh Redox Potential Eli $3 Turbidity Turbidity Time Yl IS Gal Purged jg Conductance 4Oicj Time O44L Conductance Gal Purged 71 40 C7 pH pH LLR IH.S\Temperature j5 Temperature Redox Potential Eli Miii GmdwaterDisthsgePermit Data 11.17.06 Revision aoundwater Monlioiing QuaiityABsERraUCcPIWlQAP Page 41 of 41 Turbidity Volume of Water Purged 1aMP44atfl1aad -- Ihii1Pi11LRZtQ Calculoition Plow Rate in gpm Time to evacuate two casing volumes 2V S160 .33 ____T2V/Q Mn Number of casing volumes evacuated If ritber than twØ p/A If well evacuated to dryness number of gallons evacu Name of Certified Analytical Laboratory if Other Than nergy Labs 11n1/it t$zsnp1e Sinisde Taken cij4e $leVolunie fid ThIæIsnedfled Filteredi cirØj Presenrative Added efrelel VOCs yrJW RCL Nutrients flbaflMetals All Other Non YJJY -v lOOn 2SOud 25ffthl 12S04 lIMO3 NoPieiervathe Added Riidiologlcs GrossAipha lODOml 12504 YN Other specify Sample volume Ifapreservativeisused Specify Typ and Quantity of Pteservative Comments Arca on ocl tL-IiuL prcSrnc GJ rUC4 Pirr lcrcv.t VIS tLtt84r LII M.n4j P.y_tSt3 S..wcs 4or flutW\n4 VtPnAfvcSc IAXCJA oiSs LcI-1-oicj t-ar clear 3oko1 -rk i.-ALr P44lp t1.Jt 4l.mkl CLtcncc Mill C-raiSwateLr Discharge Permit Date 2.25.07 Jevision Groundwater Ikdcnitothg Quality Assurance Plan QAP Page 40 of 4ft AflACffIIMllNT 11 WIIIIIfl R4IISA UflNIIThDf MIILL DATA WOKSffET FOM GOUN WAT Descript ion of Sampling Event 111L ar foen Location well name MuJ initials Cner J4oilcLa 1/f Date and Time for Purging 1trR/OR and Sampling if different p1/ft Well Purging Equip IJseth ..4uiiip or ._bÆller WeII.Pump if other than Bennet Sampling Event MOA Yklty rev Well Samped in Sampling Event______ pHBufferl.O 70 pH$uffer.4.O Specific Conductance CMS uMKOSIcm Well Depth JL13S Depth to Water Before Pugingi3 Casing Volume Well .653h 3U Well..367k Conductance avg 34I p11 atWater avg Lj Cf Well Water Temp avg ii Redo enah Turbidity Weather Cond Rrrlg cAo.b1 Extl Amb Temp prior to sampling event 23 Time 4flS Gal PurgecL Time Gal PurgeL Conductance 31j Conductance__________________ pp__________________.... Temperature 11 Temperature Redox PotentialEh .115 Redozptduiial Eli______________ Turbidity __________Th4dity__________________ Time Gal Purged_______Time Gal Purged Conductance Conductance_________________________ pH 77 pH Temp7Jt ___________ Teeratiie Potential Eli________________ Redox Potential Eli__________________ GrouuthuatciPiscbarge Peait lDtc IL 7.06 1evision ouudlwater IWomtoruig Quviity Assurance flue QAP ge 41 of4R Turbidity Turbidity_______________________ Volume of Water Purged When Field Parameters are Measured___________________ jggthCa1con Plow Rate in gpnr Time to evacuate two casing vohunea ZV S/60 _______________T2V/Q.___________________ Number of casing volumes evacuated if other than two_________________ if well evacuated to dryness number of gallons evacuated________________ Name of Certified Analytical Laboratory if Other thiiEneigyLth SSnSk Then curdel SSVileVthnme .6SlthtelfioihØt thsl as specified below kifttered cfrdq Preservaflve Added VOCs ioi j1IJ Nutrients Heavy Metals Aft Other Non- 10Gm 25k1 250th t12$04 1mr03 NPivsŁrvtfreAdded Radiologics .t GrossAlpha 1000th H2S04 Other specify Sample volume Hap five is used Specify Type and Quantity of lreservativi Comments_Arriucc.On ir Int I4aIIWA orc.tnd Zr u3cat-tc f.OcF set 11cca /A.LL AJ cvkc jhfl crVt JouJi .h 1k104 dec/13 ivic4 rinlnr itA lAncc cic-J ti ar Ntrklor Ntkot prccp Mill GauSwater Distharga IFeriS Date 2.25.07 Jltevisioa C-mundwater Moaitoring Qaclity Mswance PS QAP Page 40 of 411 ATTACJHIMIENTIL Will7flE IMIISA URANJNJM MuLL FH1L1Th DATA WORKET FOR GROUflD WATER flescriptioni of Sampling Event ii 6covni-l3cJer ..sam Location well name MVJ Name and initials Cnncr /-h Date and Time for Purging 1L4 /crl and Sampling if different 4ifl- Well Ptwging Equip VJse iputEp or_bailer WeilPump if other than Rennet Jf Sampling Event tkJbk Cnn Prey Wel Sampled in Sampling Event 1MW 111 pliBuffer7.0 1.b pHluffer4.0 4.O Specific Conductance 11K uMBOS/em Well Depth Depth to Water Before Purging 71 14 Casing Volume VI Well Y-jc .653k Well N/I-.367h Conductance avg 41 pH of Water vg Well Water Temp avg.J4 Reddx PoStM 13k I3 Turbidity WeatherCond 9Ar%douŁj ExtlAmb Tune lOW dalPurged Time Jbk5 ialPurged t43 educlance L12 Conductance .. pH_.qg pH Tetuperatum 14 11 Temperature 19 4Z Redox Potential Eli 1I Redox Potential Bk St Turbidity .1 Turbidity 317 Time Jl5fl Conductance GaiPurged 2..oS 41 pH L.CY1 Temperature IL.IILI Time 12.00 Conductance Gal Purged .15 pH .QS Temperature __514RedoxPotentialBk5C Cl1u4 Redox pntannt h\ -qTi1b GreoxLdwater Didwge Permit aeSateriMiStoring Qtmiity Asuarence Plan QAP Date 11.17.06 Peviain Page 41 of 41 _______________________Turbidity.__ Volume Water Purged gpina Rate Calculation Flow Rate in gpm S160 ________________ Comments j4rcnjak on AC fl1iJ4 prcscitcubttnIOQS/1 CJ cc M14s tL4 9A1 12.05 pitkr fl 74ch4 nA rfr1kt j-o-i -csN- 0t0404 NcjiT ccccks krvM4 ICPAIIou.cX4 LIk-s1k %Me 0P Time to evacuate two casing volumes 2Sf T2WQ 4Cj M.A Number of casing volumes evacuated if ther than two .1 iS If welt evacuated to dryness number of gauons evacutdd r74 Name of Certified Analytical Laboratory if Other Than Inergy Labs MIU C-roaSwater DschargePeiS Thae 2.25.07 Revjisioa OrotmSatcr Monitoring Quality Msarance Plan QAP of 41 AflACIFIIII4ENTR VVJIIIIITIE 1MIIA UJIItANHffJIMI MuLL 1FIIELD MTA WORILSIIIIIEET F01 GIIOU1kIE1 WATh1 Description of Sampling Event Y2 Ac4\k ro -et7 Saftflpr Location well name Mu 60 NaiS and initials i- Date and Time for Purging n7aJ ot and Sampling if different um Well Purging Equip Used .pwfip or _bailer WeIlPump if other than Bennet 411K Sampling Event______________________Prey Well Sampled in Sampling Event vl pHBuffer7.O 10 pflB.uffer4.O Specific Conductance qq uMROS/cm Well Depth. Depth to Water Before Pigging 4rflL Casing Volume Well t.//.653h.....3Well i/A-.367k Conductance avg pH of Watr avg Well WaterTemp avg bO Redx Potential Eh77 Turbidity Weather Cond 9c 10J1 Extl Ainb Temp prior to samphng event c-Th.SaL 14 Time faO Purged_______Tune Gal Purged conducace ConchtŁtance pH 3O pit Temperature 2M GO Temperature Redox Potential Eh .9-17 RedyPntial Jlh______________ Turbidity /ICbidity Time Gal Purged_______ Conductance nfl Time Gal Purged Conductance pH Tenmer4T Temperature Re4pw1ntial Eh_ DID Potential Eli It4Mll ouadwates Discharge Permit Crouodiwater Moaitoring Quality Assurance Pian QM Date 11.17.05 Jlievnsion Page 41 of 41 Tnxbiditt_Turbidity Volume of Water Purged When Field Parameters are Measured___________________ hi Rate Calculation Plow Rate in gpm sI60 __________________ Time to evacuate two easing volumes 2V T2V/Q__________________ Number of casing volumes evacuated if dther than two... If welt evacuated to dryness number of gallons evacuitctd_ Name of Certified Analytical Laboratoty if Other thu Hnergy Labs_________ sliSle SSt TAken chtPe ile Vthaa .fidithSifthØE ThakgisjSifled jIered ØfrcU PreservatIve Added Lcirclel VOCS Lt4 fl Nuidents Heavy Metals Aii Othr Non- buS sO4 YNIN250mlit N6PEeÆvittveAdded Radiologics GmÆsAlpbÆ Other specify 4TYI -Y 1500w Sainplvolume cy 02804 If preservative is used Specify Type and Quantity of PtoservativØ -rac cJUa9s Lk Dii bLPA Comments Arrue La 1tAnCt 401.ktj 5oupIv\tJent Sc or porccMcr %e4 prC.cJ\4 tttO Po Mill Grounthvater lDischacge PenS thotSwaIcir MoSoring Qawlity Assurance PIau QP1P Date 2.25.07 Iftevision Page 40 of 41 Temprature Potential Eh..... ATTACJHID4IIENT ii WifIUITIE IMIIESA URMkIMJM MLL FHELD WsTA WOJOIKSIHIIEIET IFOR GROUFJffD WATEIR Descaiptioim of Sampling Event flkk ark 0tA Lc27T Samp Locationwellnanie MW L5 Watheandinitials tnncr ijj2 Date and Time for Purging 7/.CU1o9 and Sampling if different_________________ Well Purging Equip Usect iwtip or_bailer Welt Pump if other than Bennet Sampling Event TJ Prey Well aiiped in SamplingEvent Li L4 pL Buffer 7.0 7-pHuffer4O Specific Conductance CH uMNOS/cni Wel Depth Depth to WaterBefomPurging_77-t Casing VolmneV Well 3c-LS .653k Well u/A 367k Conductance 417 p0 Otr gyg c4 Wet Water Temp avg 19 74 Rethi Potential Eh Turbidity Weather Cond Pr Extl Amb Temp prior to amphng event 1.3 Time Gal Purged________Tune Gal Purged Conductance_______________________Conductance_________________________ pH____________________ Temperature Temperature ../ Redox Potentiiul Bk____________Redox PoteiIial Bh______________ Turbidity_________________Turb4___________________ Time Gal Purged Conductance________________________ Time Gal Purged Conductance__________________________ pH Temperature Rejiox Potential Bk_________________ pg aoudwaterDiscbargePereit Crouodwater Mouilflg Quality Msuraace PAss QAP Date 1117.06 JaevisAcn Page 41 of Tuttidiity Volume of Water Purged Pumpina Rate Clu1ajpn Plow Rate in gpm 3169 _____32 Tinieto evacuate two casing volumes 2V T2V/Q Mk Number of casing volumes evacuated if other than twO iS if well evacuated to dryness number of gallons evacOatdd lu/fr Name of Certified Analytical Laboratory if Other than Energy Labs if//U ttSle SlØ TOISI s4e $$le Volume 4iS1Seiflitlli thasi as scanNed iItered elSe PreservatIve Added else VOCe .YYN.s4onil.t.YN irni Nutrientsrs MI OtiS NØn- 100 ml 250 ... 250mI 112Q04 HF03 N. N6hSŁrtatlveAddŁd Radiologics GrossAipha Other specify 1000nii Sample volume 112304 Il If preservative is used Specify Type and Quantity of PteŁervative Comments rTh-\-Sor TabD AflACIFJIEt4IIEIkIT WIRIIIRJE D4IIA IUEANINJ41 WIIILL Jfli BMfl WO1S1HflT JWNR GROU WATIE lDescripfSn of Sampling Event SQtbrr 1Or4l\h GmunA \k3crLr saunpierq -________________NSiØaftdinftiafs rtvtcc ro1liaai4 l.jLocationwenannoMv Date and Tinie for Purging _9 3C\and Sampling if different iv1fl Well PurgingEqtdpUsert juthp or_bailer WeliPump if other than Bennet fl Sampling Event 5pkw4tr Mv4bt PyWll inSamplingEvent AJ/A pHBufferl.O 7.0 __________________ Specific Conductance uMLlOSIcm Weflflepth. %..uuutn.tauw pH Temperature G-L 14 t11j Conductance QC pH Teinpe lcD Jo rature LI S5 Mill urdwaei Dschige ftran Dit 2.25.07 L.evisS Cannudwater lWonitoSg Qnality MsurancePS Page 40 of pH$Uffer4.0 cr Depth to Water Before Purging tfl CoaducthnceaW Casing Vhirne Well IL 14 .653h 3hW4wa\367kH6fVvg Well Water Temp avg 14 Re4o PSat Turbidity 07$ Extl Amb Temp pnolin samplmg eventWeatherCondIA od.%SAsmj Time O1fl-lthl Purged ct Time orsb Gal Pikged II t5 Conductance Conductance pit________________pu.W\ Tenip.erafluc 57 Tempetat ire 14 .8 Redox Potential Sb 478Redox.PotentifllEh4S3 Turbidity_______________________Turbidity -J fl.A...taana i..j Time Yc5 Gal Purged Time os GaLFurged .4 .7 Redox Potential Sb -I GL4 Redox Potential Eli 610 or Diz ge PeruMdt 1Uate 1L17.e6 tevisicm 11 rougdwator Moaiterhg QSIty ace Plan QAP Page 431 of 411 Comments Aec-a rn sL O14L T1%nncl l4oiCL prectn Lw nA Sm4 bea cisc flAnk 47 Ni Pt Cflpt h4 kkhjS11cn ocvn LS1 D% Mo4Lo Clear hStiTorzx.ckC0Lu/L\Ug SLAnfl Turbidilty Volume of Water Paxged4 Turbidity ti .0 Rats OJ in gpm Timto evacuate two casio volumes 2V S/fiO _____________TZV/Q Number of casing volumes evacuated ii other that two Al/fl 1ff well evacuated to dryness number of galtotis ØWutd Name of Ceitified Analytical Laboistory if Other than Labs A//It PreservatIve Added ci Mill aonutrar lDfisdwip ftaSi GroiSknitci MnnkcSg Q@rnliity MsrancePS QAP Date 2.25.07 evisien Page 40 of ATTAC1HUMfE11T MIEM ThJEA1J11UM MHILSL FMPHfl ThATA WORILSJHIIEIET FO1 GillfNJJkJEh WATEII Description of SaumnplingEvent $tr 1kitor4l\1q GttunA t3wLr LoSonwºlluaime bh cG NSiiitdiSitials1tntr -1i lLA Date and Tiame for Purging OS and Sampling if diffetent A./f Welt Fuaging Equip USt L1 or...jilŁr Sf$nnp if other than Eennet Co4n p.tnpn SampIin Event Sccikwnbcr v414 eyæic4inn1j4in ye Mw ThO7.0 7.0 __________________ Specific Conductance 1U uMUOS/cri Depth toWaterflŁfOiePging 77 CathŁVhmieV4 ML ts .653k SWell u/Pt 36Th ainddinibe fPj Teinperai IA Redox rqtenttal l Conductance Tempemhwe Conductance_________________________ pH Temperature wcil Water Temp Ævg Conductqude pif C. ___________________Tel Eedo9otential Eli. Turbidity J4idiy lime GaLPurge tune CIaL.Putge SwcitDiscbaige Pergoit MildIwiIte lWc4utcnog QSity Msvnnce Plan QAP Date 11.17.06 Reviaoa Page 41 of nppJ6anhr Ththiditv _r- Vdllunre ci Water Purge ggjg te Colon Vtion Plow Rate Qj in gpn Timto evacuate two casing vokmn 211 S160 iJI9-T2V/Q lu//rn Number of casing voknthØ cvicuaSitdtkrthaiSd If well evacuated to dtyness number of galOæs evAcUtH Name ofCextifledAflal34iOaI Labontory jj1jSEitLaii_______________ Comments Arr-i-eA or D.07 ltnn 1LII6L4 treCfll ccscni 1A pc4rnickt ThWrn 1cctc Uk M-4- t.a..-drctr LkLr -.4-crccX C\ot\ ffapresorvative 1iud Sp$ifflyp Quantity dfP4SeriEtbe Mm GflteiDcaPaiiijt Date 2.25.07 1eSS 6awadwaterMoSoSg Qaliry Msamnce FAan QAQ Page 40 of4l AflACffffR4IIFNTII WMIITliI B4llA UIIfUM1RffJM 1flLL fl1LD E1Th WOn1fII1EET FOR GRtOUN WATER DescripSn ofSamlliagEvet Sct.4irr dAtoF41\4 GtwnA UictLr LocatªonwŁhlathaiL4V eS NSiiSSliaIs1tntr .oidnJ14 Date and Time for Forging -Y and Sampling if different Well fl ngHqofletil fjjor_biier iIhimp if other than Bennet C1 Sampling EventThpLi4r o4b ip $aqinflvent /.tU pRBUffer7.0 7.0 Specific Conduchince uJVIEfOSfcm YW$ Depth to WaterBŁfUriePnglng 7t .1s Casing Volue Vj j1 .6531i .t3WelLJJk Mm cddanthth IAI tr$tca Well Water Tdmp avg 14 $0 Weafl4ePcond M4 SAPflA ExtlAmb TfrbqoWthpleSt Pk Lf 44\talurged iz rp OjO.h al Pfre4 cS Conthictaube H.L Cinduqiance nuiclrfki -1 Redox PoteataI Ph Turbidity Time Gal Purget2.Y .75 rnndusance MaCLI pH Temperature 70 aTiW Redox Potenti 131 1.. Turbklity 3k i3 .dUlttflAt.tflLIk.% PH Tenipetatutt JL4.7p Time U35 iaL.Purged 33k.3 rnnannnnnn Lj cS9 Redox PotentIal 131 RŁd J3J kxrb .%18 oWfDiigePekQEit Date kU7116 Pevisiea Qouuu1water16foSeSg QanaHtyMcQitaflCoS QAP iPago 411 of 411 P..91hnI1nr Volume of Water Pwged gping Rat Cat eadation Plow Me QJ in gpm Timifro evacuate two casinj volumes 2V 8/60 _____________T2V/7-3 tAk Number of casing volumes evaovateditlthrthai thd if well evacuated to dtyness number of galbth U$tK W4 Name of Certified Analytical Laboratozy if iiiiEiEiy Lab CominentsJrr-k-t S4 0X -a Sott tOCM uC Ab.k1 IJ45 wsc OR1a 11ArUbIUL.4 -A 4-Ofl5 po4ck ic1f 4-gi M.LLSS 1Lk\ tk1 eoc oJtflbc i/Ti tAr sc ccct%icaac1g4s rAd O\-4.r M-ireA a- GrDistha-goFeniS 6rnundwter MSoriog Qne Mrrnnawe flan Q4tP Date 2.25.07 Revision JPage 40 of 41 ATTACff1Th4INT ii W1RIII1E 1t4IIA UHIANKtUM MILL FRThILIID DATA WOflSIHIIIfl 113\DM GIItOUNIfD WAT1H Descæption of SSpHng Event ScptMhe.r Mor4bhj GiraunA t3oAcr Location well nÆnhe 4t NSjgkfljifialT1tntr InloI tiArA lJ 4jj Date and Tinie for Puting Ok and nqIng if different 14 Well Purging Equip IIJte ji4 or_bliler ikiip if other than Bennet Q1D SasnpliEvent bpLvJtr o4tt pci $a pIingyent /4W .fLf pffBUffer7.0 7.0 Specific Conductance uMlIOSfcnn Depth to WaterBfornPghig OisitV1te 4fl Welt ..653b MM 367k RedoPotential Bk. pg Temper tentia Ehi_ IUUI WeUwEtertcmp.avg \1.4 .Q LI ti LI 4thnØrAti1I Redox RSo7tL FyI4 time Gal Purged Conductance__________________ Time GaLPurged Conductance flrk Miii 6iouadwaferDbciiwage PeSE QmiiityMsnThaCe fln QAIY flate HJ7.O6 jRevjSiiu ii JPage4l of 41 TuabSty _-fl-r--tr_ VokuaiieofWaterK_0_ Rsts dThilnuuhnn Flow Rate un gpm Timeo evacuate two casing volumes 2V37T-_2VI A.A Number of eating voIuth evatuaS ottht thati t rfweffevacuatd to dtyuess number of galj ei.WS /11/ Name of Ceztifled Analytical Laboratoly tib MiiiiMegy LabLWTh Comments Pnaorndtms AITtHs4 ENERGYLABORA TORIES INC 23.99 Sail Creek Hibway 8250 PG Box 3258 Caspe WV82602 To//Free 868.235.0515 307235.0515 Fax 307234.1539 caspenWenergy/ab.com www.eaergylab.comENERGY ABC/lA oR/ES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 08/18/09 Project July Groundwater Collection Date 07129/09 0955 Lab ID C09071 253-001 DateReceived 07/31/09 Client Sample ID MW 14 Matrix Aqueous MCLJ Analyses Result UnIts Qualifier RL QCL Method Analysis Date By METALS DISSOLVED Manganese 2330 ugL 10 E200.8 08/03/09 2113/sml Uranium 70.1 ugIL 0.30 E200.8 08/03/092113 sml Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit EIERGY LA8ORAT/IE ENERG VLASORA TORIES INC 2393 Sail CreekHihway 82601 P0 Box 3258 Casper WV82602 To/f Free 888.235.0515 307.235.0515 Fax 307234.1639 caspenWenergy/ab.com wwwenergyfab.com LABORATORY ANALYTICAL REPORT RL Analyte reporting limit 1160 ugIL 28.9 ugIL QCL Quality control limit Spike recovery outside of advisory limits 10 0.30 Report Date 08/18/09 Collection Date 07/29/09 1025 DateReceived 07/31/09 Matrix Aqueous E200.8 08/03/09 2118/sml E200.8 08/03/092118 smi Project Lab ID Client Denison Mines USA Corp July Groundwater C09071 253-002 Client Sample ID MW 26 MCLJ Analyses Result Units Qualifier RL QCL Method Analysis Date By METALS DISSOLVED Manganese Uranium VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 08/04/09 1827 jir Benzene ND ug/L 1.0 SW8260B 08/04/09 1827/jlr Carbon tetrachloride ND ug/L 1.0 5W8260B 08/04/09 1827 /jlr Chloroform 700 ug/L 200 5W8260B 08/04/09 1751 jlr Chloromethane ND ug/L 1.0 SW8260B 08/04/09 1827 jir Methyl ethyl ketone ND ug/L 20 SW8260B 08104/09 1827 jlr Methylene chloride 16 ug/L 1.0 5W8260B 08/04/09 1827 jlr Naphthalene ND ug/L 1.0 SW8260B 08/04/09 1827 jir Toluene ND ug/L 1.0 SW8260B 08/04/09 1827 /jlr Xylenes Total ND ug/L 2.0 SW8260B 08/04/09 1827 /jlr Sum Dibromofluoromethane 116 %REC 70-130 SW8260B 08/04/09 1827 jir Sum p-Bromofluorobenzene 95.0 %REC 80-1 20 SW8260B 08/04/09 1827 /jlr Surr Toluene-d8 106 %REC 80-120 SW8260B 08/04/09 1827 /jlr Surr 2-Dichlorobenzene-d4 123 %REC 80-1 20 SW8260B 08/04/09 1827 jir Report Definitions MCL Maximum contaminant level ND Not detected at the reporting limit ENERGYLABORA TORIES INC 2393 Sail CreekHiway 8260 R0 Box 3258 Caspe WY82602 _____To//Free 888.235.0515 307235.0515 En 3072341639 casperenergy/ab.corn wwwenergyiab.comE1ERGY LABOR/i TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 08/18/09 Project July Groundwater Collection Date 07/29/09 1207 Lab ID C09071253-003 DateReceived 07/31/09 Client Sample ID MW 32 Matrix Aqueous MCL/ Analyses Result Units Qualifier RL QCL Method Analysis Date By METALS DISSOLVED Cadmium 2.69 ug/L 0.50 E200.8 08/03/092123 sml Iron 8220 ug/L 30 200.8 08/03/092123 smi Manganese 5450 ug/L 10 200-a 08/03/092123 smi Nickel 56 ug/L 20 E200.8 08/03/09 2123 smi RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 7.9 pCi/L E9001 08/12/09 1543 cgr Gross Alpha minus Rn Precision 1.1 pCi/L 900.1 08/12/09 1543 cyr Gross Alpha minus Rn MDC 0.5 pCi/L E900.1 08/12/09 1543 cgr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration ENERGY LABOR/I fC//L5 Client Project Lab ID Client Sample ID ENERG YLASORA TORIES INC 2393 Sail CreekH4s/way 82601 P12 Box 3258 Casper WY82602 To//Free 889235.0515 307235.0515 Fax 307.234.1639 casperenergy/aA corn wwwenergy/ab.corn LABORATORY ANALYTICAL REPORT Den ison Mines USA Corp Report Date 08/18/09 July Groundwater Collection Date 07/29/09 1207 C09071253-004 DateReceived 07/31/09 MW 65 Matrix Aqueous MCL Analyses Result Units Qualifier RL QCL Method Analysis Date By METALS DISSOLVED Cadmium 2.71 ugL 0.50 E200.8 080309 2128 sml Iron 7960 ugL 30 E200.8 080309 2128 sml Manganese 5550 ugL 10 E200.8 06103109 2126 sml Nickel 56 ugIL 20 E200.8 08103109 2128 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn Li 6.2 pCi/I E900.1 081 2I09 1543 cgr Gross Alpha minus Rn Precision 1.0 pClL E900.1 081209 1543cgr Gross Alpha minus Rn MDC 0.5 pCi/I E900.1 08112109 1543/cgr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration EtSERGY LA/3C/i1 i//IL Client Project Lab ID Client Sample ID Trip Blank Analyses VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachioride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes Total Surr Dibromofluoromethane Surr p-Bromofiuorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 Report RI Analyte reporting limit DefinItions QCI Quality control limit ENERG VLASORA TORIES INC 2393 Sail Creekl-/Ig/iway 8260 AC Box 3258 Caspe WV82602 Toll Free 888.235.0515 307.2350515 Pa 307234.1639 caspeitenergylab.com wwwonergylab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 08/18109 July Groundwater Collection Date 07/29109 1207 C09071253-005 DateReceived 07/31109 Matrix Aqueous MCLJ Result Units Qualifier RL QCL Method Analysis Date By ND ug/I 20 SW8260B 08/04/09 1528 jIr ND ug/I 1.0 8W8260B 08/04/09 1528 /jlr ND ugIL 1.0 8W8260B 08/04/09 1528 /jlr ND ug/I 1.0 8W8260B 08/04/09 1528 Ijlr ND ug/I 1.0 SW82608 08/04/09 1528 jlr ND ug/I 20 SW8260B 08/04/09 1528 jlr ND ug/I 1.0 SW8260B 08/04/09 1528 /jlr ND ug/I 1.0 SW8260B 08/04/09 1528 /jlr ND ug/I 1.0 SW82SOB 08/04/09 1528 /jlr ND ug/L 1.0 8W82608 08/04/09 1528 jir 110 %REC 70-130 SW82GOB 08/04/09 1528 jir 93.0 %REC 80-120 8W8260B 08/04/09 1528 jlr 104 %REC 80-120 SW8260B 08/04/09 1528 /jlr 118 %REC 80-1 20 5W8260B 08/04/09 1528 /jlr MCI Maximum contaminant level ND Not detected at the reporting limit E1ERGY RCIx1 0//IF ENERO YLABORA TORIES INC 2393 Sail CreekHihway 82601 P0 Box 3258 Caspe WV82602 Toll Free 988.2350515 3072350515 Pa 307234.1639 casper@energylah.com www.energylab.com ANALYTICAL SUMMARY REPORT Quote ID C1640 POC Wells Monthly Groundwater Sampling August 18 2009 Denison Mines USA Corp 64255 Hwy 191 Blanding UT 84511 Workorder No C09071253 Project Name July Groundwater Energy Laboratories Inc received the following samples for Denison Mines USA Corp on 7/31 /2009 for analysis Sample ID Client Sample ID Collect Date Receive Date Matrix Test C09071253-001 MW 14 07/29/09 0955 07/31/09 Aqueous Metals by ICP/ICPMS Dissolved C09071253-002 MW26 07/29/09 1025 07/31/09 Aqueous Metals by ICP/ICPMS Dissolved 5W8260B VOCs Standard List C09071253-003 MW 32 07/29/09 1207 07/31/09 Aqueous Metals by ICP/ICPMS Dissolved Gross Alpha minus Rn222 and Uranium C09071 253-004 MW 65 07/29/09 1207 07/31/09 Aqueous Same As Above C09071253-005 Trip Blank 07/29/09 1207 07/31/09 Aqueous 5W8260B VOCs Standard List As appropriate any exceptions or problems with the analyses are noted in the Laboratory Analytical Report the QA/QC Summary Report or the Case Narrative If you have any questions regarding these tests results please call Report Approved By yharC iktb4zp Stephanie Waldrop Reporting Supervisor ENERGYLABORA TORIES INC 2393 Sail CreekH4hway 82601 -PC 8ox3258 Caspei WV82602 Toll Free 888.235.0515 307235.0515 Fax 307234.1639 casper@energylab.com wincenergy/ab.comEISERGY .lROfA TORIES QA/QC Summary Report Client Denison Mines USA Corp Report Date 08/18/09 Project July Groundwater Work Order C09071 253 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDIimit Qual Method E200.8 Sample ID IRS Cadmium Iron Manganese Nickel Uranium Method Blank ND mg/L ND mg/I ND mg/L ND mg/L ND mg/I 4E-05 0.0006 3E-05 GE-OS 3E-05 Run ICPMS4-C090803A Batch Ri 21 835 08/03/09 1734 Sample ID C09071202-OO9CMS4 Cadmium Iron Manganese Nickel Uranium Sample Matrix Spike 0.0556 mg/L 3.72 mg/L 0.0794 mg/I 0.0563 mg/L 0.106 mg/L 0.010 0.030 0.010 0.050 0.00030 111 93 116 111 119 Run ICPMS4-C_090803A 70 130 70 130 70 130 70 130 70 130 08/03/09 2053 Sample ID C09071202-OO9CMSD Cadmium Iron Manganese Nickel Uranium Sample Matrix Spike Duplicate 0.0578 mg/L 3.78 mg/L 0.0827 mg/I 0.0568 mg/I 0.111 mg/L 0.010 0.030 0.010 0.050 0.00030 116 97 123 112 129 Run ICPMS4-C_090803A 70 130 70 130 70 130 70 130 70 130 3.7 1.5 4.1 0.8 4.5 08/03/09 2058 20 20 20 20 20 Sample ID IFS Cadmium Iron Manganese Nickel Uranium Laboratory Fortified Blank 0.0533 mg/I 1.33 mg/I 0.0557 mg/I 0.0536 mg/I 0.0536 mg/I 0.0010 0.0010 0.0010 0.0010 0.00030 107 106 111 107 107 Run ICPMS4-C_09O8O3A 85 115 85 115 85 115 85 115 85 115 08/04/09 0820 Method E900.1 Sample ID MB-GA-0253 Gross Alpha minus Rn Gross Alpha minus Rn Precision Gross Alpha minus Rn MDC Method Blank pCi/I 0.5 pCi/I 0.5 pCi/I Run G5000W_09081OA Batch GA-0253 08/12/09 1543 Sample ID ICS-GA-0253 Gross Alpha minus Rn laboratory Control Sample 32.3 pCi/I 119 Run G5000W_09O81 OA 70 130 08/12/09 1543 Sample ID C09071 253-OO3BMS Gross Alpha minus Rn Sample Matrix Spike 30.2 pCi/L 85 Run G5000W_09081 OA 70 130 08/12109 1543 Sample ID C09071253-OO3BMSD Gross Alpha minus Rn Sample Matrix Spike Duplicate 34.3 pCi/L 100 Run G5000W_09081OA 70 130 13 08/12/09 1543 23.6 Qualifiers RI Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration Method 8W82608 Sample ID 04-Aug-09_LCS_3 Benzene Carbon tetrachloride Chloroform Chioromethane mtp-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes Total Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 11 ug/L 11 ug/L 11 ug/L 11 ugh 20 ugh 110 ug/L 11 ug/L 8.0 ug/L 10 ug/L 10 ug/L 31 ugIL 1.0 114 70 130 1.0 112 70 130 1.0 109 70 130 1.0 106 70 130 1.0 102 70 130 20 109 70 130 1.0 109 70 130 1.0 80 70 130 1.0 105 70 130 1.0 104 70 130 1.0 103 70 130 1.0 102 70 130 1.0 103 80 130 1.0 113 80 120 1.0 109 80 120 Sample ID 04-Aug-09_MBLK_6 jfi Method Blank Benzene Carbon tetrachloride Chloroform Chloromethane mp-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xyienes Total Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 ND ug/L 1.0 ND ugiL 1.0 ND ugiL 1.0 ND ug/L 1.0 ND ug/L ND ugh ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L Sample ID C09071231-OOIGMS Sample Matrix Spike Acetone 2100 ugh Benzene 220 ug/L Carbon tetrachloride 240 ug/L Chloroform 230 ug/L Chloromethane 220 ug/L mp-Xylenes 410 ug/L Methyl ethyl ketone 1900 ug/L Methylene chloride 220 ug/L Naphthalene 140 ug/L o-Xylene 210 ug/L Run 5975V0C1_090804A 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 ND Not detected at the reporting limit E1SERGY LARRA JR/ES ENERGYLASORA TORIES INC 2393 Sail CreekHhway 8250 EQ Box 3258 Caspei WV82602 Toll Free 88235.0515 307235.0515 Fax 307234.1839 casperenergy/ab.com wwwenergylab.com Client Denison Mines USA Corp Project July Groundwater QAIQC Summary Report Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLImit Qual Report Date 08/18/09 Work Order C09071253 jªLaboratory Control Sample Batch R121906 Run 5975V0C1_090804A 08/04/09 1126 Run 5975V0C1_090804A 70 130 80 120 80 120 80 120 1.0 20 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 08/04/09 1313 08/04/09 1902 107 95 106 119 400 103 20 112 20 120 20 114 20 111 20 103 400 93 20 109 20 70 20 105 Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration EISERGY LiSOfA TOmES ENERG YLABORA TORIES INC 2393 Sail Creek Hibway 82501 AC Box 3258 Caspei WY82802 To/I Free 888235.0515 307235.0515 Fax 307.2341639 casperenergy/ab.com wwwenergy/ab.com QAIQC Summary Report Report Date 08/18/09 Work Order C09071253 Client Denison Mines USA Corp Project July Groundwater Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLImIt Qur Method SW8260B Batch Ri 21906 Sample ID C09071231-OOIGMS if Sample Matrix Spike Run 5975V0C1090804A 08/04/09 1902 Toluene 210 ug/L 20 104 70 130 Xylenes Total 620 ug/L 20 104 70 130 Surr Dibromofluoromethane 20 104 70 130 Surr p-Bromofluorobenzene 20 107 80 120 Surr Toluene-d8 20 117 80 120 Surr 2-Dichlorobenzene-d4 20 107 80 120 Sample ID C09071231-OOIGMSD if Sample Matrix Spike Duplicate Run 5975V0C1_090804A 08/04/09 1938 Acetone 2200 ug/L 400 111 70 130 Benzene 240 ug/L 20 120 70 130 7.6 20 Carbon tetrachloride 240 ug/L 20 119 70 130 20 Chloroform 230 ugh 20 114 70 130 20 Chloromethane 250 ug/L 20 124 70 130 11 20 mp-Xylenes 440 ug/L 20 109 70 130 6.3 20 Methyl ethyl ketone 2100 ug/L 400 103 70 130 11 20 Methylene chloride 220 ug/L 20 112 70 130 2.2 20 Naphthalene 170 ug/L 20 86 70 130 20 o-Xylene 220 ug/L 20 112 70 130 6.3 20 Toluene 220 ug/L 20 110 70 130 20 Xylenes Total 660 ug/L 20 110 70 130 5.6 20 Sum Dibromofluoromethane 20 101 70 130 10 Surr p-Bromofluorobenzene 20 104 80 120 10 SurrToluene-dB 20 115 80 120 10 Surr 2-Dichlorobenzene-d4 20 109 80 120 10 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration RPD exceeds advisory limit Co m p a n y Na m e Pr o j e c t Na m e PW S Et c Sa m p l e Or i g i n EP A J S t a t e Co m p l i a n c e fl T t n s o d Re p o r t MI t % e s s p. t L F e % B V Y In v o i c e Ad d r e s s Sp e c i a l R e p o r t / F o r m a t s EL I mu s t be no t i f i e d pr i o r to sa m p l e su b m i t t a l fo r th e fo l l o w i n g DD w DA 2 L A GS A ED D / E D T E l e c t r o n i c Da t a PO T W N V W T P Fo r m a t _ _ _ _ _ _ _ _ _ St a t e EI L E V E L I V DN E L A C in .1 J St a t e Ye s No Ph o n e / F a x Em a i l Sa m p l e r Pl e a s e Pr i n t 11 iL o n t a c t Ph o n e Pu r c h a s e Or d e r Qu o t e / B o t t l e Or d $ T Co n t a c t E L I pr i o r to RU S H sa m p l e su b m i t t a l fo r ch a r g e s an d oo l o r ID S sc h e d u l i n g - S e e In s t r u c t i o n Pa g e Co m m e n t s CC On No il g Cu s t o d y S e a l Q N Bo t t l e s co o l e r s In t a c t Sig n a t u r e MA T R I X Ma t c h SA M P L E ID E N 1 1 F I C A 1 1 O N Na m e Lo c a t i o n In t e r v a l et c Co l l e c t i o n Da t e Co l l e c t i o n Ti m e mI J g q 22 e 3m N 3 a nr 92 O f 97 72 a f OL IL Z $ if l fr u q- i fr t J li i i Qa s -- - II I 10 Th ui i i T h i Ł Sg n a t u r e Da t w i l m e .. _ e 3 g n w u r e Re c e W e d Dy pr i n t Da t e l l l m e Sig n a t u r e Re c o r d ho d by Cu s t o d y RZ b Y MU S T be elv e d bY La b o Da t e m m e Si g n e d Sa m p l e Dis p o s a l Re t u r n to c l i e n t Ka b Di s p o s a l fl 1 I . A 3 t3 f l C v \ 13 nI to In ce r t a i n ci r c u m s t a n c e s s a m p l e s su b m i t t e d to En e r g y La b o r a t o r i e s In c ma y be su b c o n t r a c t e d to ot h e r ce r t i f i e d l a b o r a t o r i e s in or d e r to co m p l e t e th e an a l y C e q u e s t e d Th i s se r v e s a s no t i c e of th i s po s s i b i l i t y All su b - c o n t r a c t da t a wil l be cl e a r l y no t a t e d on yo u r an a l y t i c a l r e p o r t Vis i t ou r we b si t e at ww w . e n e r q y l a b . c o m fo r ad d i t i o n a l in f o r m a t i o n do w n l o a d a b l e fe e sc h e d u l e fo r m s an d li n k s fl O k A H / / S Ch a i n of Cu s t o d y an d An a l y t i c a l Re q u e s t Re c o r d PL E A S E PR I N T - .a . 1 t 1 a ... . . . . - k -- as no s s i b l e Pa g e of / Energy Laboratories Inc Workorder Receipt Checklist Denison Mines USA Corp Login completed by Kimberly Humiston Reviewed by Reviewed Date Shipping container/cooler in good condition Custodyseals intact on shipping container/cooler Custody seals intaot 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 Water VOA vials have zero headspace Water-pH acceptable upon receipt Contact and Corrective Action Comments None C09071 253 Date and Time Received 7/31/2009 920 AM Received by al Carrier name Next Day Air Not Present Not Present Not Present No VOA vials submitted fl Not Applicable Yes 71 Yes Yes Yes Yes 71 Yes Yes 71 Yes 71 Yes 71 Yes 2C On Ice Yes Yes 171 No NoD No NOD NOD NOD NOD NOD NOD NOD NOD NOD ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 82601 RU Box 3258 aspe WV82602 Toll Free 888.2350515 3072350515 Fax 307234.1639 casperenergylab.com sw.v energy/a/i cornEISERGY LABORA TCf/ES CLIENT Denison Mines USA Corp Date 18-Aug-09 Project July Groundwater CASE NARRATIVE Sample Delivery Group C09071 253 ORIGINAL SAMPLE SUBMITTALS All original sample submittals have been returned with the data package SAMPLE TEMPERATURE COMPLIANCE 4C 2C Temperature of samples received may not be considered properly preserved by accepted standards Samples that are hand delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun GROSS ALPHA ANALYSIS Method 900.0 for gross alpha and gross beta is intended as drinking water method for low TDS waters Data provided by this method for non potable waters should be viewed as inconsistent RADON IN AIR ANALYSIS The desired exposure time is 48 hours days The time delay in returning the canister to the laboratory for processing should be as short as possible to avoid excessive decay Maximum recommended delay between end of exposure to beginning of counting should not exceed days SOIL/SOLID SAMPLES All samples reported on an as received basis unless otherwise indicated ATRAZINE SIMAZINE AND PCB ANALYSIS USING EPA 505 Data for Atrazine and Simazine are reported from EPA 525.2 not from EPA 505 Data reported by ELI using EPA method 505 reflects the results for seven individual Aroclors When the results for all seven are ND not detected the sample meets EPA compliance criteria for PCB monitoring SUBCONTRACTING ANALYSIS Subcontracting of sample analyses to an outside laboratory may be required If so ENERGY LABORATORIES will utilize its branch laboratories or qualified contract laboratories for this service Any such laboratories will be indicated within the Laboratory Analytical Report BRANCH LABORATORY LOCATIONS eli-b Energy Laboratories Inc Billings MT eli-g Energy Laboratories Inc Gillette WY eli-h Energy Laboratories Inc Helena MT eli-r Energy Laboratories Inc Rapid City SD eli-t Energy Laboratories Inc College Station TX CERTIFICATIONS USEPk WY00002 Radiochemical WY00937 FL-DOH NELAC E87541 Radiochemical E871017 California 02118CA Oregon WY20000I Utah 3072350515 Virginia 00057 Washington C1903 ISO 17025 DISCLAIMER The results of this Analytical Report relate only to the items submitted for analysis ENERGY LABORATORIES INC CASPERWY certifies that certain method selections contained in this report meet requirements as set forth by the above accrediting authorities Some results requested by the client may not be covered under these certifications All analysis data to be submitted for regulatory enforcement should be certified in the sample state of origin Please verify ELIs certification coverage by visiting www.energylab.com ELI appreciates the opportunity to provide you with this analytical service For additional information and services visit our web page www.energylab.com THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT TabF ENERGY LA/3ORA 70R/E Client Project Lab ID Client Sample ID ENERGYLABORA TORIES INC 2393 Sail CreekHiqbway 82601 P0 Sex 3258 Caspec WY82602 Tell Free 888.235.0515 307235.0515 Fax 307.234.1639 casperc4energyIab.com wvwenergy/ab.cem LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 10/02/09 September Monthly Groundwater Collection Date 09/09/09 0933 C09090463-001 DateReceived 09/11/09 MW 14 Matrix Aqueous MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By METALS DISSOLVED Manganese 2060 ugL 10 E200.8 091409 1627 sml Uranium 60.1 ugL 0.30 E200.8 091409 1627 sml Report RL Analyte reporting limit MOL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERO YLABORA TORIES INC P2393 Sail Creek Hiqbway 82601 PU Box 3258 Caspec WV82602 To//Free 888.235 0515 307.235.0515 Fax 307.234 1639 caspeflenergyIab.com wwwenergy/ab.comEIERGY LABORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10/02/09 Project September Monthly Groundwater Collection Date 09/09/09 1216 Lab ID C09090463-003 DateReceived 09/11/09 Client Sample ID MW 26 Matrix Aqueous MCLI Analyses Result Units Qualifiers RL QCL Method Analysis Date By METALS DISSOLVED Manganese 1500 ug/L 10 E200.8 09/15/09 0554 sml Uranium 72.5 ugIL 0.30 E200.8 09/15/09 0554 sml VOLA11LE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 09/14/09 1728 /wen Benzene ND ug/L 1.0 SW8260B 09/14/09 1728 wen Carbon tetrachioride ND ug/L 1.0 5W8260B 09/14/09 1728 wen Chloroform 2800 ug/L 500 5W8260B 09/15/09 1700 wen Chloromethane ND ug/L 1.0 SW8260B 09/14/09 1728 wen Methyl ethyl ketone ND ug/L 20 SW8260B 09/14/09 1728 wen Methylene chloride 22 ug/L 1.0 SW8260B 09/14/09 1728 wen Naphthalene ND ug/L 1.0 8W8260B 09/14/09 1728 wen Toluene ND ug/L 1.0 SW8260B 09/14/09 1728 /wen Xylenes Total ND ug/L 1.0 SW8260B 09/14/09 1728 /wen Burr Dibromofluoromethane 105 %REC 70-130 5W8260B 09/14/09 1728 wen Burr p-Bromofluorobenzene 109 %REC 80-120 SW8260B 09/14/09 1728 wen Burr Toluene-d8 104 %REC 80-120 SW8260B 09/14/09 1728 wen Surr 12-Dichlorobenzene-d4 111 %REC 80-120 5W8260B 09/14/09 1728 /wen Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERG VLABORA TORIES INC P2393 Sail CreekHibway 82601 P0 Box 3258 Caspe4c WV82602 To//Free 888.235.0515 307.235.0515 Fax 307.234.1639 casperenergy/ab.com vwwenergy/ab.comEtERGY LA/bRA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10/02/09 Project September Monthly Groundwater Collection Date 09/09/09 1147 Lab ID C09090463-002 DateReceived 09/11/09 Client Sample ID MW 32 Matrix Aqueous MCLJ Analyses Result Units QualIfiers RL QCL Method Analysis Date By METALS DISSOLVED Cadmium 2.73 ug/L 0.50 E200.8 09/14/09 1633 sml Iron 7990 ug/L 30 E200.8 09/14/09 1633 sml Manganese 5040 ug/L 10 E200.8 09/14/09 1633 sml Nickel 54 ug/L 20 E200.8 09/14/09 1633 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 4.2 pCi/L E900.1 09/28/09 1547 cgr Gross Alpha minus Rn Precision 0.8 pCi/L E900.1 09/28/09 1547cgr Gross Alpha minus Rn MDC 0.5 pCi/L E900.1 09/28/09 1547 cgr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration EIERGY LAI3O/A rowrs ENERGYLASORA TORIES INC 2393 Sail Creek Hibway 82601 PC Box 3258 Caspe WV82602 Toll Free 888.235 0515 3072350515 Fax 307234.1639 caspenenergy/ab.com vwwenergy/ab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 10/02/09 September Monthly Groundwater Collection Date 09/09/09 1147 C09090463-004 DateRecoived 09/11/09 MW 65 Matrix Aqueous Client Project Lab ID Client Sample ID MCI.J Analyses Result Units Qualifiers RL QCL Method Analysis Date By METALS DISSOLVED Cadmium 2.80 ugIL 0.50 E200.8 09/15/09 0559 sml Iron 8090 ug/L 30 E200.8 09/15/09 0559 smi Manganese 5120 ug/L 10 E200.8 09/15/09 0559 IsmI Nickel 59 ug/L 20 E200.8 09/15/09 0559 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 3.3 pCi/L E900.1 09/28/09 1547/cgr Gross Alpha minus Rn Precision 0.7 pCi/L E900.1 09/28/09 1547 cgr Gross Alpha minus Rn MDC 0.5 pCi/L E900.1 09/28/09 1547 cgr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration ENERO VLABORA TORIES INC 2393 Sail CreekHiqbway 8260 P0 Box 3258 Caspec WV82602 Toil Five 888.235 0515-307235 0515 Fai 30Z234.1639 casperenergy/ab.com wivwenergy/ab.comENERGY LABC/A 0/lIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10/02/09 Project September Monthly Groundwater Collection Date 09/09/09 1216 Lab ID C09090463-005 DateReceived 09/11/09 Client Sample ID Trip Blank Matrix Aqueous MCL/ Analyses Result Units Qualifiers RL QCL Method Analysis Date By VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 09/14/09 1806/wen Benzene ND ug/L 1.0 SW8260B 09/1 4109 1806 wen Carbon tetrachioride ND ug/L 1.0 SW8260B 0911 4/09 1806 wen Chloroform 1.3 ug/L 1.0 SW8260B 09/14/09 1806 /wen Chloromethane ND ug/L 1.0 SW8260B 09/14/09 18.06/wan Methyl ethyl ketone ND ug/L 20 SW8260B 09/14/09 1806 wen Methylene chloride ND ug/L 1.0 SW8260B 09/14/09 1806 wen Naphthalene ND ug/L 1.0 SW8260B 09/14/09 1806 wen Toluene ND ug/L 1.0 SW8260B 09/14/09 1806/wan Xylanes Total ND ug/L 1.0 5W8260B 09/14/09 1806 /wen Surr Dibromofluoromethane 104 %REC 70-1 30 5W8260B 09/14/09 1806/wan Surr p-Bromofluorobenzene 107 %REC 80-120 5W8260B 09/14/09 1806/wan Sum Toluene-d8 104 %REC 80-120 5W8260B 09/14/09 1806 wan Surr 12-Dichlorobenzane-d4 107 %REC 80-1 20 5W8260B 09/14/09 1806/wan Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERGYLASORA TORIES INC 2393 Sail Creek Hiqbway 8260 PC Box 3258 Casper WY82602 Toll Free 888.235.0515 307.235.0515 Fax 307.234 1639 casperenergy/aAconv www.energylab.comENSRGY LABORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10/02/09 Project September Monthly Groundwater Collection Date 09/09/09 1216 Lab ID 009090463-006 DateReceived 09/11/09 Client Sample ID Temp Blank Matrix Aqueous MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By PHYSICAL PROPERTIES Temperature 4.0 E170.1 09/11/09 0915/kbh Report RL Analyte reporting limit MCL Maximum contaminant level DefinItions QCL Quality control limit ND Not detected at the reporting limit ENERGYLABORA TORIES INC 2393 Sail CreekHihway 8260 -P0 Box 3258 Caspei WV82602 Toil Free 888.2350515 307235.0515 Fax 307.234.1639 caspeitenergyIab.com wwwenergy/ab.corn ANALYTICAL SUMMARY REPORT EPERGY LAIIORA TORIES October 02 2009 Denison Mines USA Corp 6425 Hwy 191 Blanding UT 84511 Workorder No C09090463 Quote ID C1640 POC Wells Monthly Groundwater Sampling Project Name September Monthly Groundwater Energy Laboratories Inc received the following samples for Denison Mines USA Corp on 9/11/2009 for analysis Metals by ICPICPMS Dissolved Metals by ICPRCPMS Dissolved Gross Alpha minus Rn222 and Uranium Aqueous Metals by ICPICPMS Dissolved SW8260B VOCs Standard List Aqueous Metals by ICP/ICPMS Dissolved Gross Alpha minus Rn222 and Uranium SW8260B VOCs Standard List Temperature Aqueous Aqueous As appropriate any exceptions or problems with the analyses are noted in the Laboratory Analytical Report the QNQC Summary Report or the Case Narrative If you have any questions regarding these tests results please call Report Approved By StepHanie Waidrop Reporting Supervisor Sample ID Client Sample ID C09090463-001 MW 14 C09090463-002 MW 32 Collect Date Receive Date Matrix 09/09/09 0933 09/11/09 Aqueous 09/09/09 1147 09/11/09 Aqueous Test C09090463-003 MW 26 09/09/09 1216 09/11/09 C09090463-004 MW 65 09/09/09 1147 09/11/09 C09090463-005 Trip Blank C09090463-006 Temp Blank 09/09/09 1216 09/11/09 09/09/09 1216 09/11/09 QAIQC Summary Report rAIe Method E200.8 Sample ID LRB Cadmium Iron Manganese Nickel Uranium Sample ID LFB Cadmium Iron Manganese Nickel Uranium Laboratory Fortified Blank 0.0512 mg/L 1.27 mg/L 0.0520 mg/L 0.0526 mg/L 0.0506 mg/L 0.010 0.030 0.010 0.050 0.00030 0.010 0.030 0.010 0.050 0.00030 Run ICPMS4-C_090914A 102 85 115 101 85 115 104 85 115 105 85 115 101 85 115 Run ICPMS4-C_090914A 94 70 130 70 130 70 130 90 70 130 100 70 130 Run ICPMS4-C_090914A 97 70 130 70 130 70 130 94 70 130 104 70 130 09/14/09 1643 20 1.2 20 3.1 20 20 4.1 20 Method E900.1 Sample ID MB-GA-0266 Cross Alpha minus Rn Gross Alpha minus Rn Precision Gross Alpha minus Rn MDC Sample ID LCS-GA-0266 GrossAlpha minus Rn Laboratory Control Sample 27.2pCi/L Run TENNELEC-3_090925A 104 70 130 09/28/09 1547 Sample ID C09090463-OO2BMS Gross Alpha minus Rn Sample ID C09090463-OO2BMSD Gross Alpha minus Rn Sample Matrix Spike 28.9pCi/L Sample Matrix Spike Duplicate 27.3pCi/L Run TENNELEC-3_090925A 94 70 130 Run TENNELEC-3_090925A 88 70 130 09/28/09 1547 09/28/09 1547 5.8 23.7 Qualifiers RL Analyte reporting limit The analyte level was greater than four times the spike level In accordance with the method recovery is not calculated MDC Minimum detectable concentration EIERGY LARORA TORIES ENERGYLABORA TORIES INC -2393 Sail Creek Hihway 82801 P0 Box 3258 Caspe.c WV82602 To//Free 888.235.0515 307235 0515 Fax 307234.1639 casperc4energylab.com wwwenergy/ab.coro Client Denison Mines USA Corp Project September Monthly Groundwater Count Result Units Report Date 10/02/09 Work Order C09090463 RL %REC Low Limit High Limit Method Blank ND ND ND ND ND RPD RPDLlmit QuaI mg/L mg/L mg/L mg/L mg/L Run ICPMS4-C_090914A 4E-05 0.0006 3E-05 6E-05 3E-05 0.0010 0.0010 0.0010 0.0010 0.00030 Batch Ri 23704 09/14/09 1139 09/14/09 1144 09/14/09 1638SampleIDC09090463-OO2AMS4 Sample Matrix Spike Cadmium 0.0496 mg/L Iron 9.06 mg/L Manganese 5.06 mg/L Nickel 0.0988 mg/L Uranium 0.0525 mg/L Sample ID C09090463-OO2AMSD Sample Matrix Spike Duplicate Cadmium 0.0512 mg/L Iron 8.96 mg/L Manganese 5.22 mg/L Nickel 0.101 mg/L Uranium 0.0547 mg/L Method Blank -0.003 0.3 0.5 pCi/L pCi/L pCi/L Run TENNELEC-3_090925A Batch GA-0266 09/28/09 1547 ND Not detected at the reporting limit Not detected at minimum detectable concentration ENERGVLABORA TORIES INC p2393 Sail CreakHbway 8260 PC Box 3258 Caspec WV82602 To//Free 888.2350515 307235.0515 Fax 307234.1639 casperenergy/aLzcom www.energylab.comEN5RGY LASORA TORIES QAIQC Summary Report Client Denison Mines USA Corp Report Date 10/02/09 Project September Monthly Groundwater Work Order C09090463 Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method SW8260B Batch R123734 Sample ID 14-Sep-09_LCS_3 12 Laboratory Control Sample Run GCMS2_090914C 09/14/09 1000 Acetone 140 ug/L 20 141 70 130 Benzene 9.8 ug/L 1.0 98 70 130 Carbon tetrachloride 9.7 ug/L 1.0 97 70 130 Chloroform 11 ug/L 1.0 108 70 130 Chloromethane 11 ug/L 1.0 108 70 130 mp-Xylenes 19 ug/L 1.0 94 70 130 Methyl ethyl ketone 130 ug/L 20 131 70 130 Methylene chloride 12 ug/L 1.0 124 70 130 Naphthalene 9.1 ug/L 1.0 91 70 130 o-Xylene 10 ugiL 1.0 104 70 130 Toluene 10 ug/L 1.0 101 70 130 Xylenes Total 29 ug/L 1.0 98 70 130 Surr Dibromofluoromethane 1.0 121 70 130 Surr p-Bromofluorobenzene 1.0 101 80 130 Surr Toluene-d8 1.0 103 80 120 Surr 12-Dichlorobenzene-d4 1.0 106 80 120 Sample ID 14-Sep-09_MBLK_6 12 Method Blank Run GCMS2_090914C 09/14/09 1152 Acetone ND ug/L 20 Benzene ND ug/L 1.0 Carbon tetrachloride ND ug/L 1.0 Chloroform ND ug/L 1.0 Chloromethane ND ug/L 1.0 mp-Xylenes ND ug/L 1.0 Methyl ethyl ketone ND ug/L 20 Methylene chloride ND ug/L 1.0 Naphthalene ND ug/L 1.0 o-Xylene ND ug/L 1.0 Toluene ND ug/L 1.0 Xylenes Total ND ug/L 1.0 Surr Dibromofluoromethane 1.0 112 70 130 Surr p-Bromofluorobenzene 1.0 106 80 120 Surr Toluene-d8 1.0 103 80 120 Surr 12-Dichlorobenzene-d4 1.0 108 80 120 Sample ID C09090463-OO3BMS 12 Sample Matrix Spike Run GCMS2_090914C 09/14/09 1921 Benzene 100 ug/L 10 100 70 130 Carbon tetrachloride 99 ug/L 10 99 70 130 mp-Xylenes 98 ug/L 10 98 70 130 o-Xylene 100 ug/L 10 102 70 130 Toluene 100 ug/L 10 100 70 130 Xylenes Total 200 ug/L 10 100 70 130 Surr Dibromofluoromethane 10 109 70 130 Surr p-Bromofluorobenzene 10 110 80 120 Surr Toluene-d8 10 106 80 120 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration Spike recovery outside of advisory limits QAIQC Summary Report Cl lent Denison Mines USA Corp Report Date 10/02/09 Project September Monthly Groundwater Work Order C09090463 Method SW8260B Sample ID C09090463-OO3BMS j.Q Sample Matrix Spike Surr 2-Dichlorobenzene-d4 Sample ID 15-Sep-09_LCS_2 Chloroform Surr Dibromofluoromethane Surr p-Bromotluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 Sample ID 15-Sep-09_MBLK_5 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane mp-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes Total Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 Run GCMS2_090914C 10 109 80 120 1.0 108 1.0 109 1.0 109 1.0 104 1.0 106 1.0 104 70 130 1.0 111 80 120 1.0 103 80 120 1.0 107 80 120 Sample ID C09090463-OO3BMS Chloroform Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 Sample Matrix Spike 8200 ug/L Run GCMS2_090914C 500 109 70 130 500 110 70 130 500 112 80 120 500 102 80 120 500 107 80 120 09/15/09 1737 Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration ENERGY LAL3ORA TORIES ENERGVLABORA TORIES INC P2393 Sail Creek Hihway 82501 P0 Box 3258 Caspe WY82602 Toll Free 885235.0515 307235 0515 Fax 307.234.1539 casperenergy/ab.com www.energylab.com Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLImIt QuaI Sample ID C09090463-OO3BMSD jQ Sample Matrix Spike Duplicate Benzene 100 ug/L Carbon tetrachloride 100 ug/L mp-Xylenes 100 ug/L o-Xylene 110 ug/L Toluene 100 ugIL Xylenes Total 210 ug/L Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 Run GCMS2_09091 4C 10 100 70 130 10 102 70 130 10 101 70 130 10 108 70 130 10 102 70 130 10 104 70 130 10 112 70 130 10 112 80 120 10 103 80 120 10 109 80 120 Batch RI 23734 09/14/09 1921 09/14/09 1959 0.4 20 3.2 20 2.4 20 5.7 20 1.2 20 4.1 20 10 10 10 10 09/15/09 1428 09/15/09 1622 Run GCM52_090914C 70 130 70 130 80 130 80 120 80 120 Run GCMS2_090914C Laboratory Control Sample 11 ug/L jf Method Blank ND ug/L 20 ND ug/L 1.0 ND ug/L 1.0 ND ug/L 1.0 ND ug/L 1.0 ND ug/L 1.0 ND ug/L 20 ND ug/L 1.0 ND ug/L 1.0 ND ug/L 1.0 ND ug/L 1.0 ND ug/L 1.0 ND Not detected at the reporting limit Analyte Count Result Units QAIQC Summary Report Method 5W8260B Sample ID C09090463-OO3BMSD Sample Matrix Spike Duplicate Chloroform 8300 ug/L Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration ENERGY LAI3OIA OIl/ES ENERGVLABORA TORIES INC 2393 Sail Creek H/iway 82601 P0 Box 3258 Caspe4 WV82602 Toil Free 888.235 0515 307.235 0515 Fax 307234.1639 caspenWenergy/ab.com wwwenergy/ab.coin Client Denison Mines USA Corp Project September Monthly Groundwater Report Date 10/02/09 Work Order C09090463 RL %REC Low Limit High Limit RPD RPDLimit Qual Run GCMS2_090914C 500 111 70 130 500 112 70 130 500 108 80 120 500 104 80 120 500 109 80 120 Batch R123734 09/15/09 1815 1.2 20 10 10 10 10 ND Not detected at the reporting limit Ch a i n of Cu s t o d y an d An a l y t i c a l Re q u e s t Re c o r d PL E A S E PR I N T Pr o v i d e as mu c h in f o r m a t i o n as na c d f i u i o l -- Co m p a n y Na m e z _ V1 i Re p o r t Ma i l Ad d r e s y 2C . % 8V t /1 4 i v 7 In v o i c e Ad d r e s s Sp e c i a l R e p o r t / F o r m a t s DW LI ED D / E D T E l e c t r o n i c Da t a LP O T W I V v W T P Fo r m a t _ _ _ _ _ _ LI St a t e fl LE V E L iv Ll O t h e r LI N E L A C Pr o j e c t Na m e PW S Pe r m i t Et Sa m p l e Or i g i n EP N S t a t e Co m p l i a n c e ri t e j1 f e 1 t A \ _v n v k t c 4J c c r t I _ St a t e Ar Ye s No Co n t a c t Lm e Ph b / F a x Em a i l Sa m p l e r Pl e a s e Pr i n t 12 A S Lr Lw - fl 2 - i ar w in d In v o i c e l C o n t a c t Ph o n e Pu r c h a s e Or d e r Qu o t e / B o t t l e Co n t a c t EL I pr i o r to Sh i p p e d by RU S H s a m p l e s u b m i t t a l S6 P % Z fo r ch a r g e s an d iO 5 sc h e d u l i n g - S e e CV c t f l \ In s t r u c t i o n Pa g e Co m m e n t s Re c e i p t Te m p ai s cc aC O O O On l c e fl C O Cu s t o d y se a l On Bot t l e t3 C/ On C o o l e r In t a c t MA T R I X Sig n a t u r e Ma t c h 1- v J X_ -u Zn ix L 1- k SA M P L E ID E N T I F I C A T I O N Na m e Lo c a t i o n In t e r v a l et c 1æ l k i 2M i 3 3 ML J t 4 Mw Co l l e c t i o n Da t e q4 V 1 94 O t 7 oq qq . o Co l l e c t i o n Ti m e g3 la g g/ 4 7N z a S7 i J a 4 n e / 7 m c 10 -- - Snrf l p c 4 2 lT h e c e i v e d b y p r i n t Da t e / T i r n e Sig n a t u r e Cu s t o d y Rs l i a h e d by p4 Da t e / T i m e // J f .. . _ 7 . . _ s i s 5 u Re c e i v e d by pr i n t Da t e / T i m e Re c o r d Re n q u h % A b Oa t e Sig n a t u r e MU S T b e De t e / T i m Si g n e d sa m p l e Dis p o s a l Re t u r n to Cli e n t La b Dis p o s a l Re c e i v e d by La b o r a t o r y q 11 In ce r t a i n ci r c u m s t a n c e s sa m p l e s su b m i t t e d to En e r g y La b o r a t o r i e s In c ma y be su b c o n t r a c t e d to ot h e r ce r t i f i e d la b o r a t o r i e s in or d e r to co m p l e t e th e an a l y s i s re q u e s t e d Th i s se r v e s as no t i c e of th i s po s s i b i l i t y All su b - c o n t r a c t da t a wil l be cl e a r l y no t a t e d on yo u r an a l y t i c a l r e p o r t Vis i t ou r we b si t e at ww w . e n e r q y l a b . c o m fo r ad d i t i o n a l in f o r m a t i o n do w n l o a d a b l e fe e sc h e d u l e fo r m s an d li n k s EI E R G Y LA I 3 O R A T O R I E S Pa g e of / Energy Laboratories Inc Workorder Receipt Checklist Denison Mines USA Corp Login completed by Kimberly Humiston Reviewed by Reviewed Date Shipping container/cooler in good condition Custody seals intact on shipping container/cooler Custody seals intact on sample bottles Chain of custody present Chain of custody signed when relinquished and received Chain of custody agrees with sample labels Samples in proper container/bottle Sample containers intact Sufficient sample volume for indicated test All samples received within holding time Container/Temp Blank temperature Water VOA vials have zero headspace Water pH acceptable upon receipt Contact and Corrective Action Comments C09090463 Date and Time Received 9/11/2009 915 AM Received by klb Carrier name Next Day Air No No No NoD NOD Nofl No NOD NOD NOD No VOA vials submitted Not Applicable Not Present Not Present Not Present Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 4C On Ice Yes Yes NoD NOD None ENERGYLABORA TORIES INC -2393 Sail Creek Hihway 82601 P0 Box 3258w Casper WY82602 To/I Free 888.235 0515 3072350515 Fax 307.234.1639-casperenergy/ab.com Mnvenergy/ab.com Denison Mines USA Corp Date 02-Oct-09CLIENT Project Sample Delivery Group C09090463 ORIGINAL SAMPLE SUBMITTALS All original sample submittals have been returned with the data package SAMPLE TEMPERATURE COMPLIANCE 4C 2C Temperature of samples received may not be considered properly preserved by accepted standards Samples that are hand delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun GROSS ALPHA ANALYSIS Method 900.0 for gross alpha and gross beta is intended as drinking water method for low TDS waters Data provided by this method for non potable waters should be viewed as inconsistent RADON IN AIR ANALYSIS The desired exposure time is 48 hours days The time delay in returning the canister to the laboratory for processing should be as shod as possible to avoid excessive decay Maximum recommended delay between end of exposure to beginning of counting should not exceed days SOIL/SOLID SAMPLES All samples reported on an as received basis unless otherwise indicated ATRAZINE SIMAZINE AND PCB ANALYSIS Data for PCBs Atrazine and Simazine are reported from EPA 525.2 PCB data reported by ELI reflects the results for seven individual Aroclors When the results for all seven are ND not detected the sample meets EPA compliance criteria for PCB monitoring SUBCONTRACTING ANALYSIS Subcontracting of sample analyses to an outside laboratory may be required If so ENERGY LABORATORIES will utilize its branch laboratories or qualified contract laboratories for this service Any such laboratories will be indicated within the Laboratory Analytical Report BRANCH LABORATORY LOCATIONS eli-b Energy Laboratories Inc Billings MT eli-g Energy Laboratories Inc Gillette WY eli-h Energy Laboratories Inc Helena MT eli-r Energy Laboratories Inc Rapid City SD eli-t Energy Laboratories Inc College Station TX CERTIFICATIONS USEPA WY00002 Radiochemical WY00937 FL-DOH NELAC E87641 Radiochemical E871017 California 02118CA Oregon WY200001 Utah 3072350515 Virginia 00057 Washington C1903 ISO 17025 DISCLAIMER The results of this Analytical Report relate only to the items submitted for analysis ENERGY LABORATORIES INC CASPERWY certifies that certain method selections contained in this report meet requirements as set forth by the above accrediting authorities Some results requested by the client may not be covered under these certifications All analysis data to be submitted for regulatory enforcement should be certified in the sample state of origin Please verify ELIs certification coverage by visiting www.energylab.com ELI appreciates the opportunity to provide you with this analytical service For additional information and services visit our web page www.energylab.com September Monthly Groundwater CASE NARRATIVE ENSRGY LASORA TORIES THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT TabG ENERGYLABORA TORIES INC p2393 Sail Creek Hqbway 82601 P0 Box 3258 Caspe WV82502 Toll Free 888.235.0515 307.235.0515 Fax 307234 1639 caspenWenergy/ab.corn wwwenergy/alz cornEtSERCY LA/3ORA iouirc LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/18/09 Project 3rd Quarter Groundwater Collection Date 08/25/09 1336 Lab ID C09081027-001 DateReceived 08/27/09 Client Sample ID MW Matrix Aqueous MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By METALS DISSOLVED Manganese 84 ugh 10 E200.8 08/28/09 1957 smi Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 8260 PQ Box 3258 Caspe WV82602 To//Free 888235.0515 3072350515 Fax 307234.1639 caspeaenergy/th.com www.energjdab.com LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/15/09 Project 3rd Quarter Groundwater Collection Date 08/18/09 1132 Lab ID C09080768-001 DateReceived 08/20/09 Client Sample ID MW Matrix Aqueous MCL Analyses Result UnIts Qualifiers RI.QCL Method Analysis Date By METALS DISSOLVED Manganese 397 ug/L 10 E200.8 08/25/09 2223/sml Selenium 24.5 ugL 5.0 E200.8 08125/09 2223 sml Thallium 0.78 ugL 0.50 E200.8 08/25109 2223 smi Uranium 22.2 ug/L 0.30 E200.8 08/25/09 2223 smi Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERGY LA/i /LA1///I E1ERGY z1HO//A ////I ENERG YLABORA TORIES INC 2393 Sail Creek H47/iway 82601 PC Box 3258 Caspec WV82602 To//Free 888.2350515 307.2350515 Fax 307234.1639 casperenergy/atz corn wwwenergy/ab.corn LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 09/15/09 3rd Quarter Groundwater Collection Date 08/18/09 1035 C09080768-002 DateReceived 08/20/09 MW 3A Matrix Aqueous Client Project Lab ID Client Sample ID MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L P2320 08/27/09 1241 /dvg Bicarbonate as HCO3 305 mg/L A2320 08/27/09 124 dvg Calcium 486 mg/I E200.7 09/10/09 1459/cp Chloride 57 mg/L 1.0 A4500-CI 09/04/09 0847 jal Fluoride mg/L 0_i A4500-F 08/25/09 1146 dvg Magnesium 308 mg/L 0.5 E200.7 09/10/09 1459/cp Nitrogen Ammonia as ND mg/L 0.05 A4500-NH3 08/25/09 1202 /jal Nitrogen NitrateNitrite as 1.2 mg/L 0.1 E353.2 08/27/09 1519 /jal Potassium 28.6 mg/L 0.5 E200.7 09/10/09 1459 cp Sodium 764 mg/L E200.7 09/10/09 1459 cp Sulfate 3840 mg/I 60 P4500-504 09/08/09 1447 /jal PHYSICAL PROPERTIES pH 6.9 s.u 0.010 P4500-H 08/21/09 1447/dd Solids Total Dissolved TDS 180 5760 mg/I 10 A2540 08/21/09 1408 dd METALS DISSOLVED Arsenic ND ug/I 5.0 E200.8 08/25/09 2228 smi Beryllium 2.06 ug/I 0.50 E200.8 08/27/09 0653 smi Cadmium 2.31 ug/L 0.50 E200.8 08/25/09 2228 smi Chromium ND ug/I 25 E200.8 08/25/09 2228 smi Cobalt ND ug/I 10 E200.8 08/25/09 2228 sml Copper ND ug/I 10 E200.8 08/25/09 2228 sml Iron ND ug/I 30 E200.8 08/25/09 2228 smi lead ND ug/l 1.0 E200.8 08/25/09 2228 sml Manganese 356 ug/l 10 E200.8 08/25/09 2228 sml Mercury ND ug/I 0.50 E200.8 08/25/09 2228 sml Molybdenum ND ug/l 10 E200.8 08/25/09 2228 sml Nickel 22 ug/L 20 E200.8 08/25/09 2228 sml Selenium 90.4 ug/l 5.0 E200.8 08/25/09 2228 sml Silver ND ug/I 10 E200.8 08/25/09 2228 sml Thallium 0.83 ug/l 0.50 E200.8 08/25/09 2228 sml Tin ND ug/l 100 E200.8 08/25/09 2228 sml Uranium 17.0 ug/l 0.30 E200.8 08/25/09 2228 sml Vanadium ND ug/l 15 E200.8 08/25/09 2228 smi Zinc 110 ug/l 10 E200.8 08/25/09 2228 smi RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 2.2 pCi/I E900.1 08/24/09 1445 cgr Gross Alpha minus Rn Precision 0.5 pCi/I E900.1 08/24/09 1445 cgr Gross Alpha minus Rn MDC 0.4 pCi/I E900.1 08/24/09 1445 cgr Report RI Analyte reporting limit MCI Maximum contaminant level Definitions QCI Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RI increased due to sample matrix interference EfERGY /1///A TC/// ENERGYLASORS4 TORIES INC 2393 Sail Creek H4hway 8260 R0 Box 3258 Caspe WV82602 Toil Free 888 235 0515 3072350515 Fa 307234.1639 casperenergy/ab.com energylab corn LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denison Mines USA Corp 3rd Quarter Groundwater C09080768-002 MW 3A Report Date 09115/09 Collection Date 08/18/09 1035 DateRecelved 08/20/09 Matrix Aqueous Report RL Analyte reporting limit DefinItions QCL Quality control limit MCL Maximum contaminant level ND Not detected at the reporting limit MCL Analyses Result Units Qualifiers RI QCI Method Analysis Date By DATA QUALITY NC Balance -1.77 Calculation 09/14/09 0839 kbh Anions 86.6 meq/L Calculation 09/14/09 0839 kbh Cations 83.6 meq/L Calculation 09/14/09 0839 kbh Solids Total Dissolved Calculated 5650 mg/L Calculation 09/14/09 0839 kbh TDS Balance 0.80 1.20 1.02 Calculation 09/14/09 0839 kbh VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 08/25/09 1904 /jlr Benzene ND ug/L 1.0 SW8260B 08/25/09 1904 /jIr Carbon tetrachioride ND ug/L 1.0 SW8260B 08/25/09 1904 /jlr Chloroform ND ug/L 1.0 SW8260B 08/25/09 1904 /jlr Chloromethane ND ug/L 1.0 SW8260B 08/25/09 1904 /jlr Methyl ethyl ketone ND ug/L 20 SW8260B 08/25/09 1904 jIr Methylene chloride ND ug/L 1.0 SW8260B 08/25/09 1904 IjIr Naphthalene ND ug/L 1.0 SW8260B 08/25/09 1904 /jlr Toluene ND ug/L 1.0 5W8260B 08/25/09 1904 /jlr Xylenes Total ND ugIL 1.0 SW8260B 08/25/09 1904 /jlr Surr Dibromofluoromethane 105 %REC 70-1 30 SW8260B 08/25/09 1904 /jlr Surr p-Bromofluorobenzene 95.0 %REC 80-120 SW8260B 08/25/09 1904 /jlr Surr Toluene-d8 97.0 %REC 80-1 20 SW8260B 08/25/09 1904 /jlr Surr 2-Dichlorobenzene-d4 106 %REC 80-1 20 SW8260B 08/25/09 1904 /jlr ENERG YLABORA TORIES INC 2393 Sail Creek /-/rbway 82601 P0 Box 3258 Caspec WV82602 Toll Free 883235.0515 307235.0515 Fax 307234.1639 casper@energylab.com wwwenergy/ab.comEIERGY LA DORA TOR/ES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/18/09 Project 3rd Quarter Groundwater Collection Date 08/25/09 1557 Lab ID C09081 027-002 DateReceived 08/27/09 Client Sample ID MW Matrix Aqueous MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Fluoride 0.9 mgL 0.1 A4500-F 09/03/09 1816 dvg METALS DISSOLVED Manganese 257 ugh 10 E200.8 08/28/09 2002 smi Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERGYLABORA TORIES INC 2393 Sail Creek Hq/iway 82601 RO Box 3258 Caspe.c WY82602 Toil Free 889235 0515W 3072350515 Fax 307234.1639 caspenilenergy/ab.com ivww ener.qy/aA cornENERGY LI1LOIA TOP/ES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10/02109 Project 3rd Quarter Groundwater Collection Date 08/31/09 0951 Lab ID C09090094-005 DateReceived 09/01/09 Client Sample ID MW 11 Matrix Aqueous MCLJ Analyses Result UnIts QualIfiers RL QCL Method AnalysIs Date By MAJOR IONS Carbonate as C03 mg/L P.2320 09/04109 2333 dvg Bicarbonate as HCO3 374 mgL A2320 09/04/09 2333/dvg Calcium 41.9 mg/L 1.2 E200.7 09/17109 1451 cp Chloride 26 mg/L A4500-Cl 09/21/09 1313 /jal Fluoride 0.6 mg/L 0.1 A4500-F 09/15/09 1217 dvg Magnesium 11.2 mg/L 0.50 E200.7 09/17/09 1451 cp Potassium 6.10 mg/L 0.51 E200.7 09/17/09 1451 /cp Sodium 602 mg/L 1.1 E200.7 09/17/09 1451 /cp Sulfate 1090 mg/L 30 A4500-S04 09/16/09 1121 /jal PHYSICAL PROPERTIES pH 8.03 s.u 0.01 P.4500-H 09/02/09 1437 dd Solids Total Dissolved TDS 180 1840 mg/L 10 A2540 09/03/09 1436 dd METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 09/04/09 0650 sml Beryllium ND ug/L 0.50 E200.8 09/08/09 2307 sml Cadmium ND ug/L 0.50 E200.8 09/04/09 0650 sml Chromium ND ug/L 25 E200.8 09/04/09 0650 sml Cobalt ND ugL 10 E200.8 09/04/09 0650/sml Copper ND ug/L 10 E200.8 09/04/09 0650 smi Iron 91 ug/L 30 E200.8 09/04/09 0650 sml Lead ND ug/L 1.0 E200.8 09/04/09 0650 sml Manganese 79 ug/L 10 E200.6 09/04/09 0650 smi Mercury ND ug/L 0.50 E200.8 09/04/09 0650 sml Molybdenum ND ug/L 10 E200.8 09/04/09 0650 sml Nickel ND ug/L 20 E200.8 09/04/09 0650 sml Selenium ND ug/L 5.0 E200.8 09/04/09 0650 sml Silver ND ug/L 10 E200.8 09/08/09 2307 smi Thallium ND ug/L 0.50 E200.8 09/04/09 0650 smi Tin ND ug/L 100 E200.8 09/04/09 0650 sml uranium 0.33 ug/L 0.30 E200.8 09/04/09 0650 sml Vanadium ND ug/L 15 E200.8 09/04/09 0650 sml Zinc ND ug/L 10 E200.8 09/04/09 0650 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.2 pCi/L E900.1 09/24/09 1607 cgr Gross Alpha minus Rn Precision 0.6 pCi/L E900.1 09/24/09 1607 cgr Gross Alpha minus Rn MDC 0.9 pCi/L E900.1 09/24/09 1607/cgr Report RL Analyte reporting limit MCL Maximum contaminant level DefInitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RL increased due to sample matrix interference Not detected at minimum detectable concentration ENERGY LAIJOIA O/ILS ENERG YLASORA TORIES INc 2393 Salt CreekHhway 82601 P0 Box 3258 caspei WV82602 Toll Free 888.235.0515 307235.0515 Fax 307234.1639 casperenergylab.ccm www.energylab.com LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denison Mines USA Corp 3rd Quarter Groundwater C09090094-005 MW 11 Report Date 10/02/09 Collection Date 08/31/09 0951 DateReceived 09101/09 Matrix Aqueous DATA QUALITY NC Balance Anions Cations Solids Total Dissolved Calculated TDS Balance 0.80-1.20 -0.868 29.9 29.4 1980 0.930 RL Analyte reporting limit QCL Quality control limit MCL Maximum contaminant level ND Not detected at the reporting limit MCL/ Analyses Result Units Qualifiers RL QCL Method Analysis Date By meqL meq/L mgL Calculation Calculation Calculation Calculation Calculation 09/25/09 0739 kbh 09/25/09 0739 kbh 09/25109 0739/kbh 09/25/09 0739 kbh 09/25/09 0739 kbh Report Definitions ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 82601 P0 Box 3258 Casper WV82602 Toll Free 888.235.0515 307235 0515 Fax 307234.1639 casperenergy/ab.com wwwenergylab.cornENERGY LARORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10/02/09 Project 3rd Quarter Groundwater Collection Date 08/26/09 0957 Lab ID C09090094-003 DateRecelved 09/01/09 Client Sample ID MW 11 Matrix Aqueous MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Nitrogen Ammonia as 0.62 mgL 0.05 A4500-NH3 09/09/09 1558 /jal Nitrogen NitrateNitrite as ND mgL 0.1 E353.2 09/09/09 1108 jal VOLATILE ORGANIC COMPOUNDS Acetone ND ugL 20 SW8260B 09/09/09 0829 wen Benzene ND ugL 1.0 SW8260B 09/09/09 0829 wen Carbon tetrachloride ND ug/L 1.0 SW8260B 09/09/09 0829 wen Chloroform ND ugL 1.0 SW8260B 09/09/09 0829 wen Chioromethane ND ug/L 1.0 SW8260B 09/09/09 0829/wen Methyl ethyl ketone ND ugL 20 5W8260B 09/09/09 0829 wen Methylene chloride ND ugIL 1.0 SW82608 09/09/09 0829 wen Naphthalene ND ugIL 1.0 5W8260B 09/09/09 0829 wen Toluene ND ugIL 1.0 SW8260B 09/09/09 0829 wen Xylenes Total ND ug/L 1.0 SW8260B 09/09/09 0829 wen Surr Dibromofluoromethane 116 %REC 70-130 SW8260B 09/09/09 0829 wen Surr p-Bromofluorobenzene 103 %REC 80-120 SW8260B 09/09/09 0829 wen Surr Toluene-d8 102 %REC 80-120 5W8260B 09/09/09 0829/wen Surr 2-Dichlorobenzene-d4 111 %REC 80-120 SW8260B 09/09/09 0829 wen Report RI.Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERGYLASORA TORIES INC 2393 Sail Creek Hsbway 82601 .Rc Box 3258 Caspe WV82602 Toil Free 885235.0515 307235 0515 Fax 3072341639 casperenergy/ab.com wwwenergylab.com LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/15/09 Project 3rd Quarter Groundwater Collection Date 08/17/09 0903 Lab ID C09080768003 DateReceived 08/20/09 Client Sample ID MW 12 Matrix Aqueous MCL/ Analyses Result Units Qualifiers RL QCL Method Analysis Date By METALS DISSOLVED Manganese 35 ug/L 10 E200.8 08/25/09 2233 smi Uranium 17.2 ug/L 0.30 E200.8 08/25/09 2233 smi Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERGY LAIORA TO// ENERO VLABORA TORiES INC 2393 Sail Creek Hiqbway 82601 AC 8ox3258 Caspe WV82602 Toll Free 8882950515 307235.0515 Fax 307234.1639 casperSenergylab.com wwwenergy/ab.cvrn LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corn Report Date 09/15/09 Project 3rd Quarter Groundwater Collection Date 08/19/09 0915 Lab ID C09080823-001 DateReceived 08/21/09 Client Sample ID MW 14 Matrix Aqueous MCLJ Analyses Result UnIts Qualifiers RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mgL A2320 08/27/09 1845 dvg Bicarbonate as HCO3 458 mgL A2320 08/27/09 1845 dvg Calcium 483 mgL 0.6 E200.7 09/03/09 1633 aae Chloride 19 mgL A4500-CI 09/10/09 1258 jaI Fluoride 0.2 mgL 0.1 A4500-F 08/25/09 1323 dvg Magnesium 125 mg/L 0.5 E200.7 09/04/09 1647/aae Nitrogen Ammonia as 0.11 mgL 0.05 A4500-NH3 08/25/09 1216 jal Nitrogen NitrateNitrite as ND mgL 0.1 E353.2 08/27/09 1602 jal Potassium 10.6 mgL 0.5 E200.7 09/03/09 1633 aae Sodium 323 mgL 0.5 E200.7 09/03/09 1633 aae Sulfate 1820 mgIL 100 A4500-S04 09/10/09 1219/jal PHYSICAL PROPERTIES pH 7.10 s.u 0.01 A4500-H 08/24/09 1552dd Solids Total Dissolved TDS 180 3400 mgL 10 A2540 08/24/09 1441 dd METALS DISSOLVED Arsenic ND ugL 5.0 E200.8 08/26/09 0133sml Beryllium ND ug/L 0.50 E200.8 08/27/09 0740 sml Cadmium 1.02 ugL 0.50 E200.8 08/26/09 0133 sml Chromium ND ugL 25 E200.8 08/26/09 0133 sml Cobalt ND ugL 10 E200.8 08/26/09 0133/sml Copper ND ug/L 10 E200.8 08/26/09 0133 sml Iron ND ug/L 30 E200.8 08/26/09 0133 smi Lead ND ug/L 1.0 E200.8 08/26/09 0133 smi Manganese 2140 ug/L 10 E200.8 08/26/09 0133 sml Mercury ND ug/L 0.50 E200.8 08/26/09 0133 sml Molybdenum ND ug/L 10 E200.8 08/26/09 0133 sml Nickel ND ug/L 20 E200.8 08/26/09 0133 smi Selenium ND ug/L 5.0 E200.8 08/26/09 0133 smi Silver ND ug/L 10 E200.8 08/27/09 0740 sml Thallium ND ug/L 0.50 E200.8 08/26/09 0133 sml Tin ND ug/L 100 E200.8 08/26/09 0133 smi Uranium 61.7 ug/L 0.30 E200.8 08/26/09 0133 sml Vanadium ND ug/L 15 E200.8 08/26/09 0133 /sml Zinc 11 ug/L 10 E200.8 08/26/09 0133 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 1.9 pCi/L E900.1 09/02/09 1658 cgr Gross Alpha minus Rn Precision 0.6 pCi/L E900.1 09/02/09 1658 cgr Gross Alpha minus Rn MDC 0.5 pCi/L E900.1 09/02/09 1658 cgr Report RL Analyte reporting limit MCL Maximum contaminant level DefinitIons DCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RL increased due to sample matrix interference fl//5 Client Project Lab ID Client Sample ID MW 14 Analyses DATA QUALITY A/C Balance Anions Cations Solids Total Dissolved Calculated TDS Balance 0.80 1.20 VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes Total Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Sum 2-Dichlorobenzene-d4 Report RL Analyte reporting limit Definitions QCL Quality control limit ENERGYL4BORA TORIES INC 2393 Salt Creek H47bway 82601 P0 x3258 Caspei WV82602 rd/Free 686.235.0515 307235.0515 Fax 307234.1639 casperenergyIaLwomwwwenergyIab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 09/15/09 3rd Quarter Groundwater Collection Date 08/19/09 0915 C09080823-001 DateReceived 08/21/09 Matrix Aqueous MW Result Units Qualifiers RL QCL Method Analysis Date By 3.07 Calculation 09/11/09 0938 kbh 45.8 meq/L Calculation 09/11/09 0938 kbh 48.8 meq/L Calculation 09/11/09 0938 kbh 3010 mg/L Calculation 09/11/09 0938/kbh 1.13 Calculation 09/11/09 0938/kbh ND ug/L 20 5W8260B 08/28/09 1501 /wen ND ug/L 1.0 SW8260B 08/28/09 1501 /wen ND ug/L 1.0 SW8260B 08/28/09 1501 /wen ND ug/L 1.0 SW8260B 08/28/09 1501 /wen ND ug/L 1.0 5W8260B 08/28/09 1501 /wen ND ug/L 20 5W8260B 08/28/09 1501 wen ND ug/L 1.0 SW8260B 08/28/09 1501 /wen ND ug/L 1.0 5W8260B 08/28/09 1501 /wen ND ug/L 1.0 SW8260B 08/28/09 1501 /wen ND ug/L 1.0 SW8260B 08/28/09 1501 /wen 121 %REC 70-130 SW8260B 08/28/09 1501 /wen 116 %REC 80-120 SW8260B 08/28/091501 /wen 104 %REC 80-120 SW8260B 08/28/091501 /wen 108 %REC 80-120 SW8260B 08/28/09 1501 wen MCL Maximum contaminant level ND Not detected at the reporting limit Client Project Lab ID Client Sample ID ENERGYLABORA TORIES INC 2393 Sail CreekH/iway 8260 RU Box 3258 Caspei WY82602 Toll Free 888.235.0515 30Z235.0515 Fax 307234.1839 casper4energylab.com vocwenergy/ab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 09/15/09 3rd Quarter Groundwater Collection Date 08/19/09 1127 C09080823-002 DateReceived 08/21/09 MW 15 Matrix Aqueous MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By METALS DISSOLVED Selenium 142 ug/L 5.0 E200.8 08/26/09 0158 sml Uranium 44.9 ug/L 0.30 E200.8 08/26/09 0158 sml Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERO VLABORA TORIES INC 2393 Sail Creek Hiibway 82601 P0 Box 3258 Caspe WV82602 To//flee 889235.0515 3072350515 Fax 307234.1639 casperenergyIaAcom wwwenergy/ab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 09/15/09 3rd Quarter Groundwater Collection Date 08/18/09 0937 C09050768-004 DateReceived 08/20/09 MW 17 Matrix Aqueous Client Project Lab ID Client Sample ID MCU Analyses Result Units Qualifiers RL QCL Method Analysis Date By METALS DISSOLVED Thallium 0.71 ug/L 0.50 E200.8 08/27/09 0719/sml Uranium 27.8 ug/L 0.30 E200.8 08/27/09 0719 smi Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERGY L/1/C/t1 10/ ENERGY LABORATORIES INC 2393 Salt Creek Hwy 82601 P0 Box 3258 Casper WY 82602 Toll Free 888.235.0515 307.235.0515 FAX 307.234.1639 casper@energylab.com www.energylab.comLABORATORIES LABORATORY ANALYTICAL REPORT Revised Date 11/30/09 Client Denison Mines USA Corp Report Date 09/18/09 Project 3rd Quarter Groundwater Collection Date 08/25/09 1127 Lab ID C09081027-003 DateReceived 08/27/09 Client Sample ID MW 18 Matrix Aqueous MCL/ Analyses Result Units Qualifier RL QCL Method Analysis Date By METALS DISSOLVED Manganese 104 ug/L 10 E200.8 08/28/09 2008 smi Thallium 2.62 ug/L 0.50 E200.8 08/28/09 2008 sml Uranium 41.6 ug/L 0.30 E200.8 08/28/09 2008 sml Report Ft Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit S/ERG VLABORA TORIES INC 2393 Sail creek H/iwajq82601 P0 Box 3258W Caspec WV82602 Toll Free 888.235.0515- 307.235.0515 Fax 307234.1639-caspeK4energy/ab.com-wwwenergy/ab.com LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/18/09 Project 3rd Quarter Groundwater Collection Date 08/25/09 0912 Lab ID C09081 027-004 DateReceived 08/27/09 Client Sample ID MW 19 Matrix Aqueous MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Fluoride 1.0 mgL 0.1 A4500-F 09/03/09 1820 dvg Nitrogen NitrateNitrite as 2.2 mg/L 0.1 E353.2 09/03/09 1242 jal METALS DISSOLVED Selenium 9.1 ugL 5.0 E200.8 08/28/09 2034 sml Thallium ND ugh 0.50 E200.8 08/28/09 2034 sml Uranium 6.46 ug/L 0.30 E200.8 08/28/09 2034 sml Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERGY LABOR/i Tote/ES ENERGYLABORA TORIES INC 2393 Sail CreekHihway 82601 P0 Box 3258W Casper WY82602 To//Free 888.235.0515 307235 0515 Fax 307234.1639 casperenergy/ab.com wwwenergy/ab.comENERGY LABOR/i TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10/02/09 Project 3rd Quarter Groundwater Collection Date 08/31/09 1305 Lab ID C09090094-006 DateReceived 09/01/09 Client Sample ID MW 20 Matrix Aqueous MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mgIL A2320 09109/09 1416 dvg Bicarbonate as HCO3 281 mgIL A2320 09/09/09 1416 dvg Calcium 358 mgIL 2.5 E200.7 09117/09 1455 cp Chloride 62 mgL A4500-Cl 09121109 1317 /jaI Fluoride 0.3 mgL 0.1 A4500-F 09/15109 1220 dvg Magnesium 99.3 mg/L 0.86 E200.7 09/17/09 1455 cp Potassium 49.8 mg/L 1.0 E200.7 09/17/09 1455 cp Sodium 1360 mgIL 2.3 E200.7 09/1 7/09 1455 cp Sulfate 3760 mg/L 30 A4500-504 09/16/09 1125 jal PHYSICAL PROPERTIES pH 7.63 s.u 0.01 A4500-H 09/02/09 1439/ dd Solids Total Dissolved TDS 180 5640 mg/L 10 A2540 09/03/09 1436 /dd METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 09/04/09 0655 sml Beryllium ND ug/L 0.50 E200.8 09/08/09 2333 sml Cadmium ND ug/L 0.50 E200.8 09/04/09 0655 sml Chromium ND ugIL 25 E200.8 09/0409 0655 sml Cobalt ND ugIL 10 E200.8 09/04/09 0655 sml Copper ND ugIL 10 E200.8 09/04/09 0655/sml Iron ND ugIL 30 E200.8 09/04/09 0655 sml Lead ND ug/L 1.0 E200.8 09/04/09 0655 smi Manganese 42 ugh 10 E200.8 09/04/09 0655 sml Mercury ND ugIL 0.50 E200.8 09/04/09 0655 sml Molybdenum ND ugIL 10 E200.8 09/04/09 0655/sml Nickel ND ug/L 20 E200.8 09104/09 0655 sml Selenium ND ug/L 5.0 E200.8 09/04109 0655 sml Silver ND ug/L 10 E200.8 09/08/09 2333 sml Thallium ND ug/L 0.50 E200.8 09/04/09 0655 sml Tin ND ug/L 100 E200.8 09/04/090655 sml uranium 16.0 ug/L 0.30 E200.8 09/04/090655 Isml Vanadium ND ug/L 15 E200.8 09/04/09 0655 sml Zinc 40 ugIL 10 E200.8 09/04/09 06551 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.5 pCi/L E900.1 09/24/09 1607 cgr Gross Alpha minus Rn Precision 0.6 pCiIL E900.1 09/24/09 1607/cgr Gross Alpha minus Rn MDC 0.9 pCiIL E900.1 09/24/09 1607 cgr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RL increased due to sample matrix interrerence Not detected at minimum detectable concentration ENERGYLABORA TORIES INC 2393 Sail Creek Hi/zway 8260 P0 Box 3258 Caspei WV82602 Toll Free 888.235 0515 307235.0515 Fax 307234.1639 casper4energy/ahcom wwwenergy/ab.cotnEIERGY LAITORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10/02/09 Project 3rd Quarter Groundwater Collection Date 08/26/09 1502 Lab ID C09090094001 DateRecelved 09/01/09 Client Sample ID MW 20 Matrix Aqueous MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Nitrogen Ammonia as 0.47 mg/L 0.05 A4500-NH3 09/09/09 1554 /jal Nitrogen NitrateNitrite as 5.1 mg/L 0.2 E353.2 09/09/09 1103 /jal VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 09/09/09 0715 wen Benzene ND ug/L 1.0 SW8260B 09/09/09 0715 wen Carbon tetrachioride ND ug/L 1.0 SW8260B 09/09/09 0715 /wen Chloroform ND ug/L 1.0 SW8260B 09/09/09 0715 /wen Chloromethane ND ug/L 1.0 SW8260B 09/09/09 0715 wen Methyl ethyl ketone ND ug/L 20 SW8260B 09/09/09 0715 wen Methylene chloride ND ug/L 1.0 SW8260B 09/09/09 0715 /wen Naphthalene ND ug/L 1.0 SW8260B 09/09/09 0715 wen Toluene ND ug/L 1.0 SW8260B 09/09/09 0715 wen Xylenes Total ND ug/L 1.0 SW8260B 09/09/09 0715 wen Surr Dibromofluoromethane 123 %REC 70-130 8W8260B 09/09/09 0715 wen Surr p-Bromofluorobenzene 105 %REC 80-120 5W8260B 09/09/09 0715 wen Surr Toluene-d8 104 %REC 80-120 SW8260B 09/09/09 0715/wen Surr 2-Dichlorobenzene-d4 112 %REC 80-120 SW8260B 09/09/09 0715 wen Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit EtSERGY LALIORA TORIES ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 82601 P0 8ox3258 Caspe WV82602 roll Free 88235.0515 307.235.0515 Fax 307.234.1639 casperenergy/ab.com wwwenergy/ab.com LABORATORY ANALYTICAL REPORT DATA QUALITY A/C Balance Anions Cations Solids Total Dissolved Calculated TDS Balance 0.80-1.20 meq/L meq/L mg/L Report RL Analyte reporting limit Definitions QCL Quality control limit MCL Maximum contaminant level ND Not detected at the reporting limit Client Denison Mines USA Corp Report Date 10/0209 Project 3rd Quarter Groundwater Collection Date 08/31/09 1305 Lab ID C09090094-006 DateReceived 09/01/09 Client Sample ID MW 20 Matrix Aqueous MW Analyses Result Units Qualifiers RL QCL Method Analysis Date By 1.00 84.8 86.5 5870 0.960 Calculation Calculation Calculation Calculation Calculation 09/25/09 0747/kbh 09/25/09 0747 kbh 09/25/09 0747 kbh 09/25/09 0747 kbh 09/25/09 0747 kbh ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 82601 PC Box 3258 CaspeA WV82602 To//Free 888.235.0515 307235 0515 Fax 307234.1639 casperenergy/ab.com rvwwenergy/ab.comEIERGY LASORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10/02/09 Project 3rd Quarter Groundwater Collection Date 08/31/09 1217 Lab ID C09090094-007 DateReceived 09/01/09 Client Sample ID MW 22 Matrix Aqueous MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 09/09/09 1423 dvg Bicarbonate as HCO3 501 mg/L A2320 09/09/09 1423 dvg Calcium 454 mg/L 2.5 E200.7 09/17/09 1459 /cp Chloride 62 mg/L A4500-Cl 09/21/09 1318 /jal Fluoride 2.8 mg/L 0.1 A4500-F 09/15/09 1223/dvg Magnesium 963 mg/L 0.86 E200.7 09/17/09 1459 cp Potassium 24.5 mg/L 1.0 E200.7 09/17/09 1459/cp Sodium 243 mg/L 2.3 E200.7 09/17/09 1459 cp Sulfate 5380 mg/L 60 A4500-S04 09/16/09 1127 /jal PHYSICAL PROPERTIES pH 7.04 s.u 0.01 A4500-H 09/02/09 1454 dd Solids Total Dissolved TDS 180 7430 mg/L 10 A2540 09/03/09 1437 dd METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 09/04/09 0700 sml Beryllium 2.31 ug/L 0.50 E200.8 09/08/09 2338 sml Cadmium 87.3 ug/L 0.50 E200.8 09/04/09 0700 sml Chromium ND ug/L 25 E200.8 09/04/09 0700 sml Cobalt 283 ug/L 10 E200.8 09/04/09 0700 sml Copper ND ug/L 10 E200.8 09/04/09 0700 /sml Iron ND ug/L 30 E200.8 09/04/09 0700 sml Lead ND ug/L 1.0 E200.8 09/04/09 0700 sml Manganese 32200 ug/L 14 E200.7 09/17/09 1459 cp Mercury ND ug/L 0.50 E200.8 09/04/09 0700 sml Molybdenum 587 ug/L 10 E200.8 09/04/09 0700 smi Nickel 141 ug/L 20 E200.8 09/04/09 0700 sml Selenium 10.8 ug/L 5.0 E200.8 09/04/09 0700 sml Silver ND ug/L 10 E200.8 09/08/09 2338 sml Thallium 1.22 ug/L 0.50 E200.8 09/04/09 0700 smi Tin ND ug/L 100 E200.8 09/04/09 0700 sml Uranium 51.7 ug/L 0.30 E200.8 09/04/09 0700 sml Vanadium ND ug/L 15 E200.8 09/04/09 0700/sml Zinc 501 ug/L 10 E200.8 09/04/09 0700 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 3.0 pCi/L E900.1 09/24/09 1607 cgr Gross Alpha minus Rn Precision 0.9 pCi/L E900.1 09/24/09 1607 cgr Gross Alpha minus Rn MDC 0.9 pCi/L E900.1 09/24/09 1607 cgr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RL increased due to sample matrix interference ENERGYLASORA TORIES INC 2393 Sail CreekHi/iway 82601 P0 Box 3258 Casper WV82502 To/I Free 888.235 0515 3072350515 Fax 307.234.1639 casperenergy/ab.com www energy/ab cornEPsERCW LABOR/-i TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10102/09 Project 3rd Quarter Groundwater Collection Date 08/26/09 1402 Lab ID C09090094-002 DateReceived 09/01/09 Client Sample ID MW 22 Matrix Aqueous MCI Analyses Result Units Qualifiers RI QCL Method Analysis Date By MAJOR IONS Nitrogen Ammonia as 0.72 mg/I 0.05 A4500-NH3 09/09/09 1556 /jal Nitrogen NitrateNitrite as 3.4 mg/I 0.2 E353.2 09/09/09 1106/jal VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW82608 09/09/09 0752 wen Benzene ND ug/L 1.0 SW8260B 09/09/09 0752 wen Carbon tetrachloride ND ug/I 1.0 SW8260B 09/09/09 0752 wen Chloroform ND ug/I 1.0 SW8260B 09/09/09 0752 wen Chloromethane ND ug/L 1.0 SW8260B 09/09/09 0752 /wen Methyl ethyl ketone ND ug/L 20 SW8260B 09/09/09 0752 wen Methylene chloride ND ug/I 1.0 5W8260B 09/09/09 0752 wen Naphthalene ND ug/L 1.0 SW8260B 09/09/09 0752 wen Toluene ND ug/I 1.0 SW8260B 09/09/09 0752 wen Xylenes Total ND ug/I 1.0 SW8260B 09/09/09 0752 Iwen Surr Dibromofluoromethane 112 %REC 70-1 30 5W8260B 09/09/09 0752 wen Surr p-Bromofluorobenzene 105 %REC 80-1 20 SW8260B 09/09/09 0752 wen Surr Toluene-d8 102 %REC 80-120 5W8260B 09/09/09 0752 /wen Surr 2-Dichlorobenzene-d4 109 %REC 80-120 SW8260B 09/09/09 0752 wen Report RI Analyte reporting limit MCI Maximum contaminant level DefinItions QCI Quality control limit ND Not detected at the reporting limit ENERO VLABORA TORIES INC 2393 Sail Creek Hibway 82601 AC Box 3258W Casper WY82602 Toll Free 888.235.0515 3072350515 Fax 307.234.1539 casperanergy/aA corn www.energylab.comEIERGY LASORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10/02/09 Project 3rd Quarter Groundwater ColleGtion Date 08/31/09 1217 Lab ID C09090094-007 DateReceived 09/01/09 Client Sample ID MW 22 Matrix Aqueous MCL/ Analyses Result Units Qualifiers RL QCL Method Analysis Date By DATA QUALITY NC Balance -3.81 Calculation 09/25/09 0748 kbh Anions 122 meq/L Calculation 09/25/09 0748 kbh Cations 113 meq/L Calculation 09/25/09 0748 kbh Solids Total Dissolved Calculated 7380 mg/L Calculation 09/25/09 0748 kbh TDS Balance 0.80 1.20 1.01 Calculation 09/25/09 0748 kbh Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit EISERGY LAROR/IIORIF Client Project Lab ID Client Sample ID ENERGYLABORA TORIES INC 2393 Salt Creek Hibway 82601 P0 Box 3258 Caspei WV82602 Toll Free 888.235.0515 307235.0515 Fax 307 23I 1639 caspenWenergy/ab.com www.energylab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 09/15/09 3rd Quarter Groundwater Collection Date 08/18/09 1523 C09080768-005 DateReceived 08/20/09 MW 23 Matrix Aqueous MCL/ Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 08/27/09 1248 dvg Bicarbonate as HCO3 235 mg/L A2320 08/27/09 1248 dvg Calcium 462 mg/L E200.7 09/10/09 1503 cp Chloride 5.6 mg/L 1.0 A4500-Cl 09/04/09 0849 jal Fluoride 0.2 mgIL 0.1 A4500-F 08/25/09 1149/dvg Magnesium 151 mgIL 0.5 E200.7 09/10/09 1503/cp Nitrogen Ammonia as ND mg/L 0.05 A4500-NH3 08/25/09 1204 /jal Nitrogen NitrateNitrite as 0.3 mg/L 0.1 E353.2 08/27/09 1522 Ijal Potassium 10.4 mg/L 0.5 E200.7 09/10/09 1503/cp Sodium 368 mg/L E200.7 09/10/09 1503 cp Sulfate 2430 mg/L 60 A4500-504 09/08/09 1449 jal PHYSICAL PROPERTIES pH 6.9 s.u 0.010 A4500-H 08/21/09 1448/dd Solids Total Dissolved TDS 180 3660 mgIL 10 A2540 08/21/09 1408 dd METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 08/27/09 0724 sml Beryllium ND ug/L 0.50 E200.8 08/27/09 0724 sml Cadmium ND ug/L 0.50 E200.8 08/27/09 0724 smi Chromium ND ug/L 25 E200.8 08/27/09 0724 smi Cobalt ND ug/L 10 E200.8 08/25/09 2244 smi Copper ND ug/L 10 E200.8 08/25/09 2244 sml Iron ND ug/L 30 E200.8 08/25/09 2244 sml Lead ND ug/L 1.0 E200.8 08/27/09 0724 smi Manganese 354 ug/L 10 E200.8 08/25/09 2244 sml Mercury ND ug/L 0.50 E200.8 08/27/09 0724 sml Molybdenum ND ug/L 10 E200.8 08/27/09 0724 sml Nickel ND ug/L 20 E200.8 08/27/09 0724 sml Selenium ND ug/L 5.0 E200.8 08/25/09 2244 sml Silver ND ug/L 10 E200.8 08/27/09 0724 sml Thallium 1.43 ug/L 0.50 E200.8 08/27/09 0724 sml Tin ND ug/L 100 E200.8 08/27/09 0724 sml Uranium 17.5 ug/L 0.30 E200.8 08/27/09 0724 sml Vanadium ND ug/L 15 E200.8 08/27/09 0724 smi Zinc 36 ug/L 10 E200.8 08/27/09 0724 smi RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 4.3 pCi/L E900.1 08/24/09 1445 cgr Gross Alpha minus Rn Precision 0.7 pCi/L E900.1 08/24/09 1445 cgr Gross Alpha minus Rn MDC 0.4 pCi/L E900.1 08/24/09 1445 /cgr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RL increased due to sample matrix interference ENERO VLABORA TORIES INC 2393 Salt CreekHirbway 8260 P0 Box 3258 Caspe4c WV82602 Toll Free 888.235.0515 307235.0515 Fax 307.2341639 casperenergylab.com nw.energylab.comEfERGY AII/A TRIlc LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/15/09 Project 3rd Quarter Groundwater Collection Date 08/18/09 1523 Lab ID C09080768-005 DateReceived 08/20/09 Client Sample ID MW 23 Matrix Aqueous MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By DATA QUALITY NC Balance -2.76 Calculation 09/14/09 0839 kbh Anions 54.6 meq/L Calculation 09/1 4109 0839/kbh Cations 51.7 meq/L Calculation 09/14/09 0839 kbh Solids Total Dissolved Calculated 3560 mg/L Calculation 09/14/09 0839 kbh TDS Balance 0.80-1.20 1.03 Calculation 09/14/09 0839 kbh VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 08/25/09 1940 jIr Benzene ND ug/L 1.0 SW8260B 08/25/09 1940 jlr Carbon tetrachloride ND ugL 1.0 SW8260B 08/25/09 1940 /jlr Chloroform ND ugL 1.0 SW8260B 08/25/09 1940 jlr Chloromethane ND ugL 1.0 5W8260B 08/25/09 1940 /jlr Methyl ethyl ketone ND ugL 20 SW8260B 08/25/09 1940 jlr Methylene chloride ND ug/L 1.0 SW8260B 08/25/09 1940 jlr Naphthalene ND ug/L 1.0 8W8260B 08/25/09 1940 /jlr Toluene ND ugiL 1.0 SW8260B 08/25/09 1940 /Jlr Xylenes Total ND ugL 1.0 SW8260B 08/25/09 1940 jlr Surr Dibromofluoromethane 107 %REC 70-1 30 8W8260B 08/25/09 1940 /jlr Surr p-Bromofluorobenzene 96.0 %REC 80-1 20 SW8260B 08/25/09 1940 /jlr Surr Toluene-d8 97.0 %REC 80-1 20 8W8260B 08/25/09 1940 /jlr Surr 2-Dichlorobenzene-d4 108 %REC 80-120 SW8260B 08/25/09 1940 jlr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERGVLABORA TORIES INC 2393 Sail Creek Hihway 82601 RO Box 3258 Casper WY82602 Tot/Free 888.235 0515 307.235.0515 Far 307234.1639 casperener.qy/ab.com www.energylab.comEIERGY LALORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/18/09 Project 3rd Quarter Groundwater Collection Date 08/24/09 0738 Lab ID C09081 027-005 DateReceived 05/27/09 Client Sample ID MW 24 Matrix Aqueous MCLJ Analyses Result Units Qualifiers RI QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 09/01/09 2149 dvg Bicarbonate as HCO3 142 mg/L A2320 09/01/09 2149 dvg Calcium 503 mg/L E200.7 09/11/09 1637 cp Chloride 37 mg/L A4500-Cl 09/11/09 1357/jal Fluoride 0.1 mg/L 0.1 A4500-F 09/03/09 1827 dvg Magnesium 177 mg/L 0.5 E200.7 09/11/09 1637/cp Nitrogen Ammonia as 0.68 mg/I 0.05 A4500-NH3 09/09/09 1504 /jal Nitrogen NitrateNitrite as ND mg/I 0.1 E353.2 09/03/09 1244 /jal Potassium 13.1 mg/I 0.5 E200.7 09/11/09 1637/cp Sodium 518 mg/I E200.7 09/11/09 1637/cp Sulfate 2740 mg/L 30 A4500-S04 09/11/09 1054 /jal PHYSICAL PROPERTIES pH 6.7 s.u 0.010 A4500-H 08/28/09 1340 /dd Solids Total Dissolved TDS 180 4210 mg/L 10 A2540 08/28/09 1638 dd METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 08/28/09 2039 sml Beryllium ND ug/L 0.50 E200.8 08/28/09 2039 smi Cadmium 1.48 ug/L 0.50 E200.8 08/28/09 2039 sml Chromium ND ug/L 25 E200.8 08/28/09 2039 sml Cobalt ND ug/L 10 E200.8 08/28/09 2039 smi Copper ND ug/L 10 E200.8 08/28/09 2039 smi Iron 926 ug/I 30 E200.8 08/28/09 2039 smi Lead ND ug/I 1.0 E200.8 08/28/09 2039 smi Manganese 3860 ug/I 10 E200.8 08/28/09 2039 sml Mercury ND ug/I 0.50 E200.8 08/28/09 2039 sml Molybdenum ND ug/L 10 E200.8 08/28/09 2039 smi Nickel ND ug/L 20 E200.8 08/28/09 2039 sml Selenium ND ug/L 5.0 E200.8 08/28/09 2039 sml Silver ND ug/L 10 E200.8 08/28/09 2039 sml Thallium 0.62 ug/I 0.50 E200.8 08/28/09 2039 sml Tin ND ug/I 100 E200.8 08/28/092039/sml Uranium 1.03 ug/L 0.30 E200.8 08/28/09 2039 sml Vanadium ND ug/L 15 E200.8 08/28/09 2039 sml Zinc 26 ug/L 10 E200.8 08/28/09 2039 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.9 pCi/I E900.1 09/16/09 1732 cgr Gross Alpha minus Rn Precision 0.4 pCi/L E900.1 09/16/09 1732 cgr Gross Alpha minus Rn MDC 0.4 pCi/I E900.1 09/16/09 1732 cgr Report RL Analyte reporting limit MCI Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RL increased due to sample matrix interference ENERG YLASORA TORIES INC 2393 Sail Creek H.hway 82601 P0 Box 3258 Caspe1c WV82602 To//Free 888.235 0515 307235.0515 Fax 307234 1639 casper4energy/ab.com www.energylab.comEIERGY LAIJOIAIOI/E5 LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/18/09 Project 3rd Quarter Groundwater Collection Date 08/24/09 0738 Lab ID C09081 027-005 DateReceived 08/27/09 Client Sample ID MW 24 Matrix Aqueous MCLJ Analyses Result UnIts Qualifiers RL QCL Method AnalysIs Date By DATA QUALITY NC Balance 1.74 Calculation 09/14/09 1030 kbh Anions 60.4 meq/L Calculation 09/14/09 1030/kbh Cations 62.6 meq/L Calculation 09/14/09 1030 kbh Solids Total Dissolved Calculated 4070 mg/L Calculation 09/14/09 1030 kbh TDS Balance 0.80-1.20 1.03 Calculation 09/14/09 1030/kbh VOLATILE ORGANIC COMPOUNDS Acetone ND ugh 20 SW8260B 08/31/09 1857/jIr Benzene ND ug/L 1.0 SW8260B 08/31/09 1857 /jlr Carbon tetrachloride ND ug/L 1.0 SW8260B 08/31/09 1857 jlr Chloroform ND ugh 1.0 SW8260B 08/31/09 1857 /jlr Chloromethane ND ug/L 1.0 SW8260B 08/31/09 1857 /jlr Methyl ethyl ketone ND ug/L 20 5W8260B 08/31/09 1857 jIr Methylene chloride ND ugh 1.0 8W8260B 08/31/09 1857 bjlr Naphthalene ND ughL 1.0 SW8260B 08/31/09 1857 /jlr Toluene ND ug/L 1.0 SW8260B 08/31/09 1857 /jlr Xylenes Total ND ugIL 1.0 5W8260B 08/31/09 1857 jlr Surr Dibromofluoromethane 104 %REC 70-130 SW8260B 08/31/09 1857 jlr Sum p-Bromofluorobenzene 98.0 %REC 80-120 SW8260B 08/31/09 1857 jlr Surr Toluene-d8 98.0 %REC 80-120 SW8260B 08/31/09 1857 /jlr Surr 12-Dichlorobenzene-d4 104 %REC 80-120 SW8260B 08/31/09 1857 /jlr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERGY LABORA TORIES ENERGYLABORA TORIES INC 2393 Sail Creek Hiqbway 8260 P0 Box 3258 Casper WV82602 Toll Free 888.235 0515 307235.0515 Fax 307234.1639 casperenergy/ab.com www.energylab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 09/18/09 3rd Quarter Groundwater Collection Date 08/24/09 1637 C09081 027-006 DateReceived 08/27/09 Matrix Aqueous Client Project Lab ID Client Sample ID MW 25 MCI Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/I A2320 09/01 /09 2157/dvg Bicarbonate as HCO3 418 mg/I A2320 09/01/092157 dvg Calcium 361 mg/L E200.7 09/11/09 1641 cp Chloride 30 mg/L A4500-Cl 09/11/09 1356 jal Fluoride 0.3 mg/I 0.1 A4500-F 09/03/09 18.30 dvg Magnesium 121 mg/I 0.5 E200.7 09/11/09 1641 /cp Nitrogen Ammonia as 0.51 mg/I 0.05 A4500-NH3 09/09/09 1506 jal Nitrogen NitrateNitrite as ND mg/I 0.1 E353.2 09/03/09 1247 jal Potassium 9.9 mg/I 0.5 E200.7 09/11/09 1641 /cp Sodium 310 mg/I E200.7 09/11/09 1641 /cp Sulfate 1580 mg/I 10 A4500-S04 09/11/09 1056 /jal PHYSICAL PROPERTIES pH 7.0 s.u 0.010 A4500-H 08/28/09 1344 /dd Solids Total Dissolved TDS 180 2740 mg/I 10 A2540 08/28/09 1638 dd METALS DISSOLVED Arsenic ND ug/I 5.0 E200.8 08/28/09 2044 sml Beryllium ND ug/L 0.50 E200.8 08/28/09 2044 sml Cadmium 1.34 ug/I 0.50 E200.8 08/28/09 2044 sml Chromium ND ug/I 25 E200.8 08/28/09 2044 sml Cobalt ND ug/I 10 E200.8 08/28/09 2044 smi Copper ND ug/I 10 E200.8 08/28/09 2044 smi Iron ND ug/I 30 E200.8 08/28/09 2044/sml lead ND ug/I 1.0 E200.8 08/28/09 2044 sml Manganese 1600 ug/I 10 E200.8 08/28/09 2044 sml Mercury ND ug/I 0.50 E200.8 08/28/09 2044 smi Molybdenum 12 ug/L 10 E200.8 08/28/09 2044 smi Nickel ND ug/I 20 E200.8 08/28/09 2044 smi Selenium ND ug/I 5.0 E200.8 08/28/09 2044 smi Silver ND ug/I 10 E200.8 08/28/09 2044 sml Thallium 0.96 ug/I 0.50 E200.8 08/28/09 2044 sml Tin ND ug/I 100 E200.8 08/28/092044 sml Uranium 6.02 ug/I 0.30 E200.8 08/28/09 2044 sml Vanadium ND ug/l 15 E200.8 08/28/09 2044 sml Zinc ND ug/I 10 E200.8 08/28/09 2044 smi RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.7 pCi/I E900.1 09/16/09 1732 cgr Gross Alpha minus Rn Precision 0.3 pCi/I E900.1 09/16/09 1732 cgr Gross Alpha minus Rn MDC 0.4 pCi/I E900.1 09/16/09 1732 cgr Report RI Analyte reporting limit MCI Maximum contaminant level Definitions QCI Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RI increased due to sample matrix interference ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 82601 P0 Box 3258 Casper WV82602 Toil Free 888.235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com wwwenergylab.comEtSERGY LABOR/i 7ORJE.c LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/18/09 Project 3rd Quarter Groundwater Collection Date 08/24/09 1637 Lab ID C09081 027-006 DateReceived 08/27/09 Client Sample ID MW 25 Matrix Aqueous MCU Analyses Result Units Qualifiers RL QCL Method Analysis Date By DATA QUALITY A/C Balance 1.36 Calculation 09/14/09 1031 kbh Anions 40.6 meq/L Calculation 09114/09 1031 kbh Cations 41.7 meqL Calculation 09/14/09 1031 kbh Solids Total Dissolved Calculated 2630 mgL Calculation 09/14/09 1031/kbh TDS Balance 0.80-1.20 1.04 Calculation 09/14/09 1031 kbh VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 08/31/09 1558 jlr Benzene ND ug/L 1.0 SW8260B 08/31/09 1558 Ijlr Carbon tetrachioride ND ug/L 1.0 SW8260B 08/31/09 1558 Ijlr Chloroform ND ugh 1.0 SW8260B 08/31/09 1558/jlr Chloromethane ND ug/L 1.0 SW8260B 08/31/09 1558 /jlr Methyl ethyl ketone ND ug/L 20 SW8260B 08/31/09 1558 /jlr Methylene chloride ND ug/L 1.0 SW8260B 08/31/09 1558 jIr Naphthalene ND ug/L 1.0 5W8260B 08/31/09 1558/jlr Toluene ND ug/L 1.0 SW8260B 08/31/09 1558/jIr Xylenes Total ND ug/L 1.0 5W8260B 08/31/09 1558/jIr Surr Dibromofluoromethane 105 %REC 70-130 SW8260B 08/31/09 1558/jlr Sum p-Bromofluorobenzene 106 %REC 80-120 SW8260B 08/31/09 1558/jlr Surr Toluene-d8 103 %REC 80-120 SW8260B 08/31/09 1558/jlr Surr 12-Dichlorobenzene-d4 114 %REC 80-120 SW8260B 08/31/09 1558/jlr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERGYLABORA TORIES INC 2393 Sail CreekHirbway 8260 P0 Box 3258 Caspei WV82602 Toll Free 888235.0515 307235.0515 Fa 307234.1639 caspenWenergy/aLz corn wwwenergy/ab.corn LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 09/15/09 3rd Quarter Groundwater Collection Date 08/19/09 1420 C09080823-003 DateReceived 08/21/09 Matrix Aqueous Client Project Lab ID Client Sample ID MW 26 MCL Analyses Result units Qualifiers RI QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 08/27/09 1907 dvg Bicarbonate as HCO3 387 mg/L A2320 08/27/09 1907 dvg Calcium 487 mg/L 0.6 E200.7 09/03/09 1636 aae Chloride 63 mgL A4500-Cl 09/10/09 1321 /jal Fluoride 0.3 mg/L 0.1 A4500-F 08/25/09 1326 /dvg Magnesium 131 mg/L 0.5 E200.7 09/04/09 1650/ aae Nitrogen Ammonia as 0.22 mg/L 0.05 A4500-NH3 08/25/09 1218 jal Nitrogen NitrateNitrite as 0.9 mg/L 0.1 E353.2 08/27/09 1605 /jal Potassium 9.7 mgIL 0.5 E200.7 09/03/09 1636 aae Sodium 176 mgIL 0.5 E200.7 09/03/09 1636/ aae Sulfate 1520 mg/L 100 A4500-504 09/10/09 1220 /jal PHYSICAL PROPERTIES pH 7.19 s.u 0.01 A4500-H 08/24/09 1602 /dd Solids Total Dissolved TDS 180 3010 mg/L 10 A2540 08/24/09 1442 dd METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 08/26/09 0219/sml Beryllium ND ug/L 0.50 E200.8 08/27/09 0745 sml Cadmium ND ug/L 0.50 E200.8 08/26/09 0219 sml Chromium ND ug/L 25 E200.8 08/26/09 0219 sml Cobalt ND ug/L 10 E200.8 08/26/09 0219 smi Copper ND ug/L 10 E200.8 08/26/09 0219 sml Iron 624 ug/L 30 E200.8 08/26/09 0219 sml Lead ND ug/L 1.0 E200.8 08/26/09 0219/sml Manganese 1530 ug/L 10 E200.8 08/26/09 0219 smi Mercury ND ug/L 0.50 E200.8 08/26/090219 /sml Molybdenum ND ug/L 10 E200.8 08/26/09 0219 sml Nickel ND ug/L 20 E200.8 08/26/09 0219 sml Selenium ND ug/L 5.0 E200.8 08/26/09 0219 sml Silver ND ug/L 10 E200.8 08/27/09 0745 sml Thallium ND ug/L 0.50 E200.8 08/26/090219 sml Tin ND ug/L 100 E200.8 08/26/09 0219 sml Uranium 58.3 ug/L 0.30 E200.8 08/26/09 0219 /sml Vanadium ND ug/L 15 E200.8 08/26/09 0219/sml Zinc ND ug/L 10 E200.8 08/26/09 0219 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 4.6 pCi/L E900.1 09/02/09 1832 cgr Gross Alpha minus Rn Precision 0.8 pCi/L E900.1 09/02/09 1832 cgr Gross Alpha minus Rn MDC 0.5 pCi/L E900.1 09/02/09 1832 cgr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RL increased due to sample matrix interference ENERO VLABORA TORIES INC 2393 Sail CroekHihway 8260 S.C Box 3258 Caspe WY82602 Tel/Free 885235.0515 307235 0515 Fax 307234.1639 caspenWenergylab.com wwiv.energy/thcom LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denisan Mines USA Carp 3rd Quarter Groundwater C09080823-003 MW 26 Report Date 09/15/09 Collection Date 08/19/09 1420 DateReceived 08/21/09 Mafrix Aqueous Report RL Analyte reporting limit Definitions QCL Quality control limit MCL Maximum contaminant level MCL/ Analyses Result Units Qualifiers RL QCL Method Analysis Date By DATA QUALITY NC Balance 3.92 Calculation 09/11/09 0946 kbh Anions 39.8 meq/1 Calculation 09/11/09 0946 kbh Cations 43.1 meqlL Calculation 09/11/090946 kbh Solids Total Dissolved Calculated 2590 mgIL Calculation 09/11/09 0946 kbh TDS Balance 0.80 1.20 1.16 Calculation 09/11/09 0946 kbh VOLATILE ORGANIC COMPOUNDS Acetone ND ugIL 200 5W8260B 08/29/09 0657 wen Benzene ND ug/L 10 SW8260B 08/29/09 0657 wen Carbon tetrachloride ND ug/L 10 SW8260B 08/29/09 0657 wen Chloroform 1200 ug/L 100 SW8260B 08/28/09 1538 wen Chloromethane ND ug/L 10 5W8260B 08/29/09 0657 wen Methyl ethyl ketone ND ug/L 200 SW8260B 08/29/09 0657 wen Methylene chloride 23 ug/L 10 SW8260B 08/29/09 0657 wen Naphthalene ND ug/L 10 5W8260B 08/29/09 0657 wen Toluene ND ug/L 10 SWS2SOB 08/29/09 0657 wen Xylenes Total ND ug/L 10 5W8260B 08/29/09 0657 wen Sum Dibromofluoromethane 130 %REC 70-130 SW8260B 08/29/09 0657 wen Surr p-Bromofluorobenzene 116 %REC 80-120 SW8260B 08/29/09 0657 wen Surr Toluene-d8 106 %REC 80-120 SW8260B 08/29/09 0657 wen Surr 2-Dichlorobenzene-d4 112 %REC 80-120 5W8260B 08/29/09 0657 wen ND Not detected at the reporting limit ENERGYLABORA TORIES INC 2393 Sail Creek Hihway 82601 P0 Box 3258 Caspei WY82602 To//Free 888235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com wiwienergylab.comE1ERCY /.AbOfl CIIIL LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/15/09 Project 3rd Quarter Groundwater Collection Date 08/18/09 1352 Lab ID C09080768-006 DateReceived 08/20/09 Client Sample ID MW 27 Matrix Aqueous MCU Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mgIL A2320 08/27/09 1255 dvg Bicarbonate as HCO3 439 mgL A2320 082709 1255 dvg Calcium 170 mgL 0.5 E200.7 09/10/09 1507/cp Chloride 40 mgL 1.0 A4500-Cl 0904/09 0851 Ijal Fluoride 0.7 mgL 0.1 A4500-F 08/25/09 1151 /dvg Magnesium 73.3 mgL 0.5 E200.7 09/1009 1507/cp Nitrogen Ammonia as ND mgL 0.05 A4500-NH3 0825/09 1206/jal Nitrogen NitrateNitrite as 6.2 mgL 0.2 E353.2 08/27/09 1524 jal Potassium 4.3 mgL 0.5 E200.7 09/10/09 1507 cp Sodium 70.3 mgL 0.5 E200.7 09/10/09 1507 cp Sulfate 480 mgL 10 A4500-504 0908/09 1450 /jal PHYSICAL PROPERTIES pH 7.4 s.u 0.010 A4500-H 08/21/09 1450dd Solids TotalDissolvedTDS@ 180C 1100 mg/L 10 A2540C 08/21/09 1622dd METALS DISSOLVED Arsenic ND ugIL 5.0 E200.8 0825/09 2310/sml Beryllium ND ug/L 0.50 E200.8 08/27/09 0730 sml Cadmium ND ugL 0.50 E200.8 08/25/09 2310 sml Chromium ND ugL 25 E200 08/25/09 2310 sml Cobalt ND ugL 10 E200.8 08/25/09 2310 sml Copper ND ugL 10 E200.8 08/25/09 2310/sml Iron ND ugL 30 E200.8 08/25/09 2310 sml Lead ND ugL 1.0 E200.8 08/25/09 2310 smi Manganese ND ugIL 10 E200.8 08/25/09 2310 sml Mercury ND ugL 0.50 E200.8 08/25/09 2310 sml Molybdenum ND ugL 10 E200.8 08/25/09 2310 sml Nickel ND ugL 20 E200.8 08/25/09 2310/sml Selenium 10.9 ugL 5.0 E200.8 08/25/09 2310 sml Silver ND ugL 10 E200.8 08/25/09 2310 sml Thallium ND ug/L 0.50 E200.8 08125/09 2310 sml Tin ND ugL 100 E200.8 08/2509 2310/sml Uranium 29.2 ugL 0.30 E200.8 08/25/09 2310 smi Vanadium ND ug/L 15 E200.8 08/25/09 2310 sml Zinc ND ugIL 10 E200.8 08/2509 2310/sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 3.1 pCiL E900.1 08/24/09 14.45 cgr Gross Alpha minus Rn Precision 0.6 pCi/L E900.1 0824/09 1445 cgr Gross Alpha minus Rn MDC 0.4 pCi/L E900.1 08/24/09 1445 cgr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RL increased due to sample matrix interference ENERGYLABORATOR/ES INC 2393 Sail CreekHibway 82601 P0 Box 3258 Caspe1 WV82602 Toll Free 888.235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com www.energylab.comEIERGY LAIXRA 7CR/F LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/15/09 Project 3rd Quarter Groundwater Collection Date 08/18/09 1352 Lab ID C09080768006 DateReceived 08/20/09 Client Sample ID MW 27 Matrix Aqueous MCU Analyses Result Units Qualifiers RL QCL Method Analysis Date By DATA QUALITY NC Balance -2.99 Calculation 09/14/09 0840 kbh Anions 18.8 meq/L Calculation 09/14/09 0840 kbh Cations 17.7 meq/L Calculation 09/14/09 0840/kbh Solids Total Dissolved Calculated 1100 mg/L Calculation 09/14/09 0840 kbh TDS Balance 0.80-1.20 1.00 Calculation 09/14/09 0840 kbh VOLATILE ORGANIC COMPOUNDS Acetone ND ugJL 20 5W8260B 08/25/09 2016 /jlr Benzene ND ug/L 1.0 5W8260B 08/25/09 2016/jIr Carbon tetrachloride ND ug/L 1.0 SW8260B 08/25/09 2016 /jlr Chloroform ND ug/L 1.0 SW8260B 08/25/09 2016 jlr Chloromethane ND ug/L 1.0 5W8260B 08/25/09 2016 /jlr Methyl ethyl ketone ND ugIL 20 5W8260B 08/25/09 2016 /jlr Methylene chloride ND ug/L 1.0 SW8260B 08/25/09 2016 jlr Naphthalene ND ug/L 1.0 5W8260B 08/25/09 2016 /jlr Toluene ND ug/L 5W8260B 08/25/09 2016 jlr Xylenes Total ND ug/L 1.0 SW8260B 08/25/09 2016 jlr Surr Dibromofluoromethane 106 %REC 70-130 SW8260B 08/25/09 2016/jlr Surr p-Bromofluorobenzene 94.0 %REC 80-120 SW8260B 08/25/09 2016 /jlr Surr Toluene-d8 96.0 %REC 80-120 5W8260B 08/25/09 2016 /jlr Surr 12-Dichlorobenzene-d4 108 %REC 80-120 SW8260B 08/25/09 2016/jlr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERGY 1AHEI1 0/lIE Client Project Lab ID Client Sample ID ENERGYLABORA TORIES INc 2393 Sail Creak Hibway 8260 P0 Box 3258 Caspe WV82602 Toll Free 88235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com www energy/ak corn LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 09/15/09 3rd Quarter Groundwater Collection Date 08/17/09 1412 C09080768-007 DateReceived 08/20/09 MW28 Matrix Aqueous MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 08/27/09 1302 dvg Bicarbonate as HCO3 153 mg/L A2320 08/27/09 1302 /dvg Calcium 526 mgL E200.7 09/10109 1511 cp Chloride 100 mgL 1.0 A4500-Cl 09/04/09 0854 /jal Fluoride 0.6 mgL 0.1 A4500-F 08/25/09 1155 /dvg Magnesium 169 mgL 0.5 E200.7 09/10/09 1511 Icp Nitrogen Ammonia as 0.06 mgL 0.05 A4500-NH3 08/25/09 1214 /jal Nitrogen NitrateNitrite as 0.2 mg/L 0.1 E353.2 08/27/09 1534 /jal Potassium 11.7 mg/L 0.5 E200.7 09/10/09 1511 Icp Sodium 302 mg/L E200.7 09/10/09 1511 lop Sulfate 2360 mg/L 30 A4500-504 09/08/09 1453 ljal PHYSICAL PROPERTIES pH 6.4 s.u 0.010 A4500-HB 08/21/09 1452/dd Solids Total Dissolved TDS 180 3680 nig/L 10 A2540 08/21/09 1622 /dd METALS DISSOLVED Arsenic 13.5 ug/L 5.0 E200.8 08/25/09 2315 sml Beryllium ND ug/L 0.50 E200.8 08/27/09 0735 sml Cadmium 3.80 ug/L 0.50 E200.8 08/25/09 2315 sml Chromium ND ug/L 25 E200.8 08/25/09 2315 sml Cobalt 29 ug/L 10 E200.8 08/25/09 2315 sml Copper ND ug/L 10 E200.8 08/25/09 2315/sml Iron 38 ug/L 30 E200.8 08/25/09 2315 sml Lead ND ug/L 1.0 E200.8 08/25/09 2315 sml Manganese 1490 ug/L 10 E200.8 08/25/09 2315 sml Mercury ND ug/L 0.50 E200.8 08/25/09 2315 sml Molybdenum ND ug/L 10 E200.8 08/25/09 2315 sml Nickel 24 ug/L 20 E200.8 08/25/09 2315 sml Selenium ND ug/L 5.0 E200.8 08/25/09 2315 sml Silver ND ug/L 10 E200.8 08/25/09 2315 sml Thallium 0.81 ug/L 0.50 E200.8 08/25/09 2315 sml Tin ND ug/L 100 E200.8 08/25/09 2315 sml Uranium 3.24 ug/L 0.30 E200.8 08/25/09 2315 sml Vanadium ND ug/L 15 E200.8 08/25/09 2315 smi Zinc 43 ug/L 10 E200.8 08/25/09 2315 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 3.2 pCi/L E900.1 08/24/09 1445 cgr Gross Alpha minus Rn Precision 0.6 pCi/L E900.1 08/24/09 1445 cgr Gross Alpha minus Rn MDC 0.4 pCi/L E900.1 08/24/09 1445 cgr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RL increased due to sample matrix interference ENERG VL4BORA TORIES INC 2393 Sail Creek Highway 82601 GPO Box 3258 Casper WV82602 To//Free 888.235.0515 307.235.0515 Fax 307234.1639 casperenergy/ab.corn www.energy/aA cornEIERGY LA I3O/A C/F LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/15/09 Project 3rd Quarter Groundwater Collection Date 08/17/09 1412 Lab ID C09080768-007 DateReceived 08/20/09 Client Sample ID MW 28 Matrix Aqueous MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By DATA QUALITY NC Balance -0.881 Calculation 09/14/09 0840 kbh Anions 54.5 meq/L Calculation 09/14/09 0840 kbh Cations 53.5 meq/L Calculation 09/14/09 0840 kbh Solids Total Dissolved Calculated 3550 mg/L Calculation 09/14/09 0840/kbh TDS Balance 0.80 1.20 1.04 Calculation 09/14/09 0840 kbh VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 08/25/09 2052 /jlr Benzene ND ug/L 1.0 SW8260B 08/25/09 2052 /jlr Carbon tetrachlouide ND ug/L 1.0 SW8260B 08/25/09 2052/jIr Chloroform ND ug/L 1.0 5W8260B 08/25/09 2052 /jlr Chloromethane ND ug/L 1.0 5W8260B 08/25/09 2052 /jlr Methyl ethyl ketone ND ug/L 20 SW8260B 08/25/09 2052 /jlr Methylene chloride ND ug/L 1.0 SW8260B 08/25/09 2052 /jlr Naphthalene ND ug/L 1.0 SW8260B 08/25/09 2052/jlr Toluene ND ug/L 1.0 SW8260B 08/25/09 2052 /jlr Xylenes Total ND ug/L 1.0 SWB26OB 08/25/09 2052 /jlr Surr Dibromofluoromethane 110 %REC 70-1 30 SW8260B 08/25/09 2052 /jlr Surr p-Bromofluorobenzene 97.0 %REC 80-120 8W8260B 08/25/09 2052 /jlr Surr Toluene-d8 98.0 %REC 80-1 20 SW8260B 08/25/09 2052 /jlr Surr 12-Dichlorobenzene-d4 108 %REC 80-1 20 SW8260B 08/25/09 2052 /jlr Report RL Analyte reporting limit MCL Maximum contaminant level DefinitIons QCL Quality control limit ND Not detected at the reporting limit ENERGY LALYOI7A 7017/ES EIVERGYLABORA TORIES INC 2393 Sail Creek Hbway 82601 P0 Box 3258 Caspe WY82602 To//Free 888.2350515 307235.0515 Fax 307.234.1639 casperenergy/ab.coni vwwenergy/ab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 09/18/09 3rd Quarter Groundwater Collection Date 08/24/09 1206 C09081 027-007 DateReceived 08/27/09 Matrix Aqueous Client Project Lab ID Client Sample ID MW 29 MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mgIL A2320 09/01/09 2204 dvg Bicarbonate as HCO3 349 mg/L A2320 09/01/09 2204 dvg Calcium 496 mg/L E200.7 09/11/09 1645/cp Chloride 34 mg/L A4500-CI 09/11/09 1359/jal Fluoride 0.8 mg/L 0.1 A4500-F 09/03/09 1836 dvg Magnesium 220 mg/L 0.5 E200.7 09/11/09 1645 cp Nitrogen Ammonia as 0.80 mg/L 0.05 A4500-NH3 09/09/09 1508 jal Nitrogen NitrateNitrite as ND mg/L 0.1 E353.2 09/03/09 1249/jal Potassium 17.5 mg/L 0.5 E200.7 09/11/09 1645 cp Sodium 501 mg/L E200.7 09/11/09 1645/cp Sulfate 2720 mg/L 30 A4500-504 09/11/09 1059 jal PHYSICAL PROPERTIES pH 6.8 s.u 0.010 A4500-H 08128/09 1346 dd Solids Total Dissolved TDS 180 4230 mg/L 10 A2540 08/28/09 1639 dd METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 08/28/09 2049/sml Beryllium ND ugh 0.50 E200.8 08/28/09 2049 sml Cadmium ND ug/L 0.50 E200.8 08/28/09 2049 sml Chromium ND ug/L 25 E200.8 08/28/09 2049 sml Cobalt ND ug/L 10 E200.8 08/28/09 2049 smi Copper ND ug/L 10 E200.8 08/28/09 2049 sml Iron 1650 ug/L 30 E200.8 08/28/09 2049 smi Lead ND ug/L 1.0 E200.8 08/28/09 2049 sml Manganese 5050 ug/L 10 E200.8 08/28/09 2049 smi Mercury ND ug/L 0.50 E200.8 08/28/09 2049 sml Molybdenum ND ug/L 10 E200.8 08/28/09 2049 smi Nickel ND ug/L 20 E200.8 08/28/09 2049 sml Selenium ND ugh 5.0 E200.8 08/28/09 2049 sml Silver ND ug/L 10 E200.8 08/28/09 2049 smi Thallium ND ug/L 0.50 E200.8 08/28/09 2049 sml Tin ND ug/L 100 E200.8 08/28/09 2049 sml Uranium 11.1 ug/L 0.30 E200.8 08/28/09 2049 sml Vanadium ND ug/L 15 E200.8 08/28/09 2049 smi Zinc ND ug/L 10 E200.8 08/28/09 2049 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 1.2 pC/L E900.1 09/16/09 1732 cgr Gross Alpha minus Rn Precision 0.4 pCi/L E900.1 09/16/09 1732 cgr Gross Alpha minus Rn MDC 0.4 pCi/L E900.1 09/16/09 1732 cgr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RL increased due to sample matrix interference ENERO YLABORA TORIES INC 2393 Sail Creek Hibway 82601 P0 Box 3258 Casper WY82602 Toll Free 888.235.0515 307235 0515 Fax 307234.1639 caspen4energylab.corn-vww energy/ab cornENERGY LABORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/18/09 Project 3rd Quarter Groundwater Collection Date 08/24/09 1206 Lab ID C09081027-007 DateReceived 08/27/09 Client Sample ID MW 29 Matrix Aqueous MCU Analyses Result UnIts Qualifiers RL QCL Method Analysis Date By DATA QUALITY NC Balance 1.34 Calculation 09/14/09 1031 kbh Anions 63.4 meq/L Calculation 09/14/09 1031 kbh Cations 65.1 meq/L Calculation 09/14/09 1031 kbh Solids Total Dissolved Calculated 4180 mg/I Calculation 09/14/09 1031 kbh TDS Balance 0.80-1.20 1.01 Calculation 09/14/09 1031 kbh VOLATILE ORGANIC COMPOUNDS Acetone ND ug/I 20 5W8260B 08/31/09 1634 Ijlr Benzene ND ug/I 1.0 5W8260B 08/31/09 1634/jIr Carbon tetrachloride ND ug/I 1.0 SW8260B 08/31/09 1634 jir Chloroform ND ug/I 1.0 SW8260B 08/31/09 1634/jlr Chloromethane ND ugIL 1.0 5W8260B 08/31/09 1634 /jlr Methyl ethyl ketone ND ug/I 20 5W8260B 08/31/09 1634 /jlr Methylene chloride ND ug/I 1.0 8W8260B 08/31/09 1634/jlr Naphthalene ND ug/I 1.0 5W8260B 08/31/09 1634 /jlr Toluene ND ug/I 1.0 SW8260B 08/31/09 1634/jlr Xylenes Total ND ug/I 1.0 5W8260B 08/31/09 1634 /jlr Sum Dibromofluoromethane 100 %REC 70-130 5W8260B 08/31/09 1634 jir Sum p-Bromofluorobenzene 98.0 %REC 80-120 5W8260B 08/31/09 1634 /jlr Sum Toluene-d8 98.0 %REC 80-1 20 SW8260B 08/31/09 1634 /jlr Sum 12-Dichlorobenzene-d4 104 %REC 80-120 5W8260B 08/31/09 1634 /jlr Report RI Analyte reporting limit MCI Maximum contaminant level Definitions QCI Quality control limit ND Not detected at the reporting limit ENERGYLABORA TORIES INC 2393 Salt Creek Hihway 82501 P0 Box 3258 Caspei WV82502 Toll Free 855235 0515 307235.0515 Far 307234.1539 casperenergylab.com wwwenergylab.cornEIERGY LABOR/i TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09118/09 Project 3rd Quarter Groundwater Collection Date 08/24/09 1017 Lab ID C09081027-008 DateReceived 08/27/09 Client Sample ID MW 30 Matrix Aqueous MCLI Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 09/01/09 2211 dvg Bicarbonate as HCO3 192 mg/L A2320 09/01/09 2211/dvg Calcium 278 mg/L 0.5 E200.7 09/11/09 1649 cp Chloride 116 mgL A4500-CI 09/11/09 1401 /jaI Fluoride 0.4 mgL 0.1 A4500-F 09/03/09 1844 dvg Magnesium 69.1 mg/L 0.5 E200.7 09/11/09 1649 cp Nitrogen Ammonia as 0.17 mg/L 0.05 A4500-NH3 09/09/09 1510 /jal Nitrogen NitrateNitrite as 20.9 mgL 0.3 E353.2 09/03/09 1252 /jal Potassium 7.4 mgIL 0.5 E200.7 09/11/09 1649 cp Sodium 111 mg/L 0.5 E200.7 09/11/09 1649 cp Sulfate 781 mg/L 30 A4500-504 09/11/09 1101 /jal PHYSICAL PROPERTIES pH 7.3 s.u 0.010 A4500-H 08/28/09 1348 dd Solids Total Dissolved TDS 180 1530 mg/L 10 A2540 08/28/09 1639 dd METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 08/28/09 2054 smi Beryllium ND ugL 0.50 E200.8 08/28/09 2054 sml Cadmium ND ug/L 0.50 E200.8 08/28/09 2054 sml Chromium ND ug/L 25 E200.8 08/28/09 2054 sml Cobalt ND ugL 10 E200.8 08/28/09 2054 sml Copper ND ug/L 10 E200.8 08/28/09 2054 sml Iron 118 ug/L 30 E200.8 08/28/09 2054/sml Lead ND ug/L 1.0 E200.8 08/28/09 2054 smi Manganese 50 ug/L 10 E200.8 08/28/09 2054 smi Mercury ND ug/L 0.50 E200.8 08/28/09 2054 smi Molybdenum ND ug/L 10 E200.8 08/28/09 2054 sml Nickel ND ug/L 20 E200.8 08/28/09 2054 sml Selenium 31.8 ug/L 5.0 E200.8 08/28/092054 smi Silver ND ug/L 10 E200.8 08/28/092054 sml Thallium ND ug/L 0.50 E200.8 08/28/09 2054 sml Tin ND ug/L 100 E200.8 08/28/092054 smi Uranium 6.97 ug/L 0.30 E200.8 08/28/09 2054 smi Vanadium ND ug/L 15 E200.8 08/28/09 2054 smi Zinc ND ug/L 10 E200.8 08/28/09 2054 smi RADIONUCUDES DISSOLVED Gross Alpha minus Rn 0.8 pCWL E900.1 09/16/09 1732 cgr Gross Alpha minus Rn Precision 0.4 pCiIL E900.1 09/16/09 1732 cgr Gross Alpha minus Rn MDC 0.4 pCi/L E900 09/16/09 1732 cgr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RL increased due to sample matrix interference ENERG VLABORA TORIES INC 2393 Sail Creek Hibway 82601 P0 Box 3258W Caspe WY82602 Toil Free 888.235.0515 3072350515 Fax 307.234.1639 casperenergy/aAcom www.energylab.comEPSERGY A//Of/A OR/ES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/18/09 Project 3rd Quarter Groundwater Collection Date 08/24/09 1017 Lab ID C09081027-008 DateReceived 08/27/09 Client Sample ID MW 30 Matrix Aqueous MCU Analyses Result Units Qualifiers RL QCL Method Analysis Date By DATA QUALITY NC Balance 0.752 Calculation 09/14/09 1031 kbh Anions 24.3 meqL Calculation 09/14/09 1031 kbh Cations 24.6 meqL Calculation 09/14/09 1031 kbh Solids Total Dissolved Calculated 1570 mgL Calculation 09/14/09 1031 kbh TDS Balance 0.80-1.20 0.970 Calculation 09/14/09 1031 /kbh VOLATILE ORGANIC COMPOUNDS Acetone ND ugL 20 5W6260B 08/31/09 1710/jlr Benzene ND ug/L 1.0 5W8260B 08/31/09 1710/jlr Carbon tetrachloride ND ug/L 1.0 SW8260B 08/31/09 1710 jIr Chloroform ND ug/L 1.0 SW8260B 08/31/09 1710/jIr Chloromethane ND ug/L 1.0 SW8260B 08/31/09 1710/jlr Methyl ethyl ketone ND ug/L 20 SW8260B 08/31/09 1710 jlr Methylene chloride ND ug/L 1.0 SW8260B 08/31/09 1710 jlr Naphthalene ND ug/L 1.0 SW8260B 08/31/09 1710/jlr Toluene ND ug/L 1.0 8W8260B 08/31/09 1710/jlr Xylenes Total ND ug/L 1.0 SW8260B 08/31/09 1710/jlr Surr Dibromofluoromethane 99.0 %REC 70-130 SW8260B 08/31/09 1710 jlr Sum p-Bromofluorobenzene 99.0 %REC 80-1 20 SW8260B 08/31/09 1710 /jlr Sum Toluene-d8 97.0 %REC 80-1 20 SW8260B 08/31/09 1710 /jlr Sum 2-Dichiorobenzene-d4 102 %REC 80-120 SW8260B 08/31/09 1710 jlr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERO YLABORA TORIES INC P23.93 Sail Creek H.bway 5250 P0 Box 3258 Caspe WY82602 Toil Free 88235.0515 307235 0515 Fax 307234 1539 casperenerqy/ab corn wwwenergy/ab.cornEIERGY LABORA TO//LS LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09118/09 Project 3rd Quarter Groundwater Collection Date 08/24/09 1422 Lab ID C09081027-009 DateReceived 08/27/09 Client Sample ID MW 31 Matrix Aqueous MCLI Analyses Result units QualIfiers RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 09/02/09 1549 dvg Bicarbonate as HCO3 215 mg/L A2320 09/02/09 1549/dvg Calcium 169 mg/L 0.5 E200.7 09/11/09 1653/cp Chloride 122 mg/L A4500-Cl 09/11/09 1414/jal Fluoride 0.9 mg/L 0.1 A4500-F 09/03/09 1847 dvg Magnesium 79.4 mg/L 0.5 E200.7 09/11/09 1653/cp Nitrogen Ammonia as ND mg/L 0.05 A4500-NH3 09/09/09 1518 /jal Nitrogen NitrateNitrite as 15.4 mg/L 0.3 E353.2 09/03/09 1259/jal Potassium 6.0 mg/L 0.5 E200.7 09/11/09 1653/cp Sodium 92.7 mg/L 0.5 E200.7 09/11/09 1653/cp Sulfate 460 mg/L 30 A4500-S04 09/11/09 1105 jal PHYSICAL PROPERTIES pH 7.6 s.u 0.010 A4500-H 08/28/09 1352 dd Solids Total Dissolved TDS 180 1230 mg/L 10 A2540 08/28/09 1639 dd METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 08/28/09 2059 smi Beryllium ND ug/L 0.50 E200.8 08/28/09 2059 sml Cadmium ND ug/L 0.50 E200.8 08/28/09 2059 smi Chromium ND ug/L 25 E200.8 08/28/09 2059 smi Cobalt ND ug/L 10 E200.8 08/28/09 2059 sml Copper ND ug/L 10 E200.8 08/28/09 2059 smi Iron ND ug/L 30 E200.8 08/28/09 2059 sml Lead ND ug/L 1.0 E200.8 08/28/09 2059 sml Manganese ND ug/L 10 E200.8 08/28/09 2059 smi Mercury ND ug/L 0.50 E200.8 08/28/09 2059 smi Molybdenum ND ug/L 10 E200.8 08/28/09 2059 smi Nickel ND ug/L 20 E200.8 08/28/09 2059 smi Selenium 58.2 ug/L 5.0 E200.8 08/28/09 2059 smi Silver ND ug/L 10 E200.8 08/28/09 2059 smi Thallium ND ug/L 0.50 E200.8 08/28/09 2059 smi Tin ND ug/L 100 E200.8 08/28/09 2059 smi Uranium 6.97 ug/L 0.30 E200.8 08/28/09 2059 sml Vanadium ND ug/L 15 E200.8 08/28/09 2059 sml Zinc ND ug/L 10 E200.8 08/28/09 2059 smi RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.8 pCi/L E900.1 09/16/09 1132 cgr Gross Alpha minus Rn Precision 0.4 pCiIL E900.1 09/16/09 1732 cgr Gross Alpha minus Rn MDC 0.4 pCiIL E900.1 09/16/09 1732 cgr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RL increased due to sample matrix interference ENERGYLABORA TORIES INC 2393 Sail Creek Hbway 8260 1i P0 Box 3258 Caspec WY82602 To//Free 888235.0515 307.235.0515 Fax 307.234.1639 casperenergy/ab.com www.energylab.comENERGY LA 130/lA 0/lIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/18/09 Project 3rd Quarter Groundwater Collection Date 08/24/09 1422 Lab ID C09081027-009 DateReceived 08/27/09 Client Sample ID MW 31 Matrix Aqueous MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By DATA QUALITY A/C Balance 4.01 Calculation 09/14/09 1032 kbh Anions 17.7 meq/L Calculation 09/14/09 1032 kbh Cations 19.2 meq/L Calculation 09/14/09 1032 kbh Solids Total Dissolved Calculated 1120 mg/L Calculation 09/14/09 1032 kbh TDS Balance 0.80-1.20 1.10 Calculation 09/14/09 1032 kbh VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 08/31/09 1746 /jlr Benzene ND ug/L 1.0 SW8260B 08/31/09 1746/jIr Carbon tetrachloride ND ug/L 1.0 5W8260B 08/31/09 1746 jir Chloroform ND ug/L 1.0 5W8260B 08/31/09 1746 /jlr Chloromethane ND ug/L 1.0 SW8260B 08/31/09 1746 jlr Methyl ethyl ketone ND ug/L 20 SW8260B 08/31/09 1746 jlr Methylene chloride ND ug/L 1.0 5W8260B 08/31/09 1746 jlr Naphthalene ND ug/L 1.0 5W8260B 08/31/09 1746/jlr Toluene ND ug/L 1.0 5W8260B 08/31/09 1746/jlr Xylenes Total ND ug/L 1.0 5W8260B 08/31/09 1746/jlr Surr Dibromofluoromethane 100 %REC 70-130 5W8260B 08/31/09 1746 jir Surr p-Bromofluorobenzene 96.0 %REC 80-120 5W8260B 08/31/09 1746 jlr Surr Toluene-d8 97.0 %REC 80-120 5W8260B 08/31/09 1746/jlr Surr 12-Dichlorobenzene-d4 104 %REC 80-120 5W8260B 08/31/09 1746/jlr Report RL Analyte reporting limit MCL Maximum contaminant level DefinItions QCL Quality control limit ND Not detected at the reporting limit El/ERG YLASORA TORIES INC 2393 Sail Creek H4ibway 82601 RU Box 3258 Caspe WY82602 To//Free 888.2350515 3072350515 Fax 8872341639 casperenergy/a corn wwwenergy/ab.corn LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 09/15/09 Collection Date 08/19/09 1342 DateReceived 08/21/09 Matrix Aqueous Client Project 3rd Quarter Groundwater Lab ID C09080823-004 Client Sample ID MW 32 MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 08/27/09 1914/dvg Bicarbonate as HCO3 420 mg/L A2320 08/27/09 1914 dvg Calcium 492 mg/L 0.6 E200.7 09/03/09 1639/ aae Chloride 48 mg/L A4500-Cl 09/10/09 1339 /jal Fluoride 0.2 mg/L 0.1 A4500-F 08/25/09 1334 dvg Magnesium 173 mg/L 0.5 E200.7 09/04/09 1711 /aae Nitrogen Ammonia as 0.82 mg/L 0.05 A4500-NH3 08/25/09 1220 /jal Nitrogen NitrateNitrite as ND mg/L 0.1 E353.2 08/27/09 1612 /jal Potassium 12.2 mg/L 0.5 E200.7 09/03/09 1639 aae Sodium 218 mg/L 0.5 E200.7 09/03/09 1639 aae Sulfate 1950 mg/L 100 A4500-S04 09/10/09 1222 /jal PHYSICAL PROPERTI ES pH 6.91 s.u 0.01 A4500-H 08/24/09 1604 dd Solids Total Dissolved TDS 180 3680 mg/L 10 A2540 08/24/09 1442 dd METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 08/26/09 0224 sml Beryllium ND ug/L 0.50 E200.8 08/27/09 0750 sml Cadmium 2.79 ug/L 0.50 E200.8 08/26/09 0224 sml Chromium ND ug/L 25 E200.8 08/26/09 0224 sml Cobalt 48 ug/L 10 E200.8 08/26/09 0224 sml Copper ND ug/L 10 E200.8 08/26/09 0224 sml Iron 8220 ug/L 30 E200.8 08/26/09 0224 sml Lead ND ug/L 1.0 E200.8 08/26/09 0224 sml Manganese 5060 ug/L 10 E200.8 08/26/09 0224 sml Mercury ND ug/L 0.50 E200.8 08/26/09 0224 sml Molybdenum 11 ug/L 10 E200.8 08/26/09 0224 smi Nickel 58 ug/L 20 E200.8 08/26/09 0224 sml Selenium ND ug/L 5.0 E200.8 08/26/09 0224 sml Silver ND ug/L 10 E200.8 08/27/09 0750 sml Thallium ND ug/L 0.50 E200.8 08/26/09 0224 sml Tin ND ug/L 100 E200.8 08/26/09 0224 sml Uranium 2.35 ug/L 0.30 E200.8 08/26/09 0224 sml Vanadium ND ug/L 15 E200.8 08/26/09 0224 sml Zinc 131 ug/L 10 E200.8 08/26/09 0224 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 6.7 pCi/L E900.1 09/02/09 1832 cgr Gross Alpha minus Rn Precision pCi/L E900.1 09/02/09 1832 cgr Gross Alpha minus Rn MDC 0.5 pCi/L E900.1 09/02/09 1832 cgr Report RL Analyte reporting limit MCL Maximum contaminant level DefinItIons QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RL increased due to sample matrix interference ENERO VLASORA TORIES INC 2393 Sail CreekHirbway 8260 RU Box 3258 Caspe WV82602 Toll Free 8882350515 3072350515 Fa 307234.1639 caspenWenergy/ab.com wwwenergylab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 09/15109 3rd Quarter Groundwater Collection Date 08/19/09 1342 C09080823-004 DateReceived 08/21109 Matrix Aqueous Client Project Lab ID Client Sample ID MW 32 MW Analyses Result Units Qualifiers RL QCL Method AnalysIs Date By DATA QUALITY NC Balance -0.320 Calculation 09/11/09 0949 kbh Anions 48.9 meq/L Calculation 09/11/09 0949 kbh Cations 48.6 meq/L Calculation 09/11/09 0949 kbh Solids Total Dissolved Calculated 3120 mg/L Calculation 09/11/09 0949 kbh TOS Balance 0.80-1.20 1.18 Calculation 09/11/09 0949 kbh VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 08/28/09 1615 wen Benzene NO ug/L 1.0 SW8260B 08/28/09 1615 /wen Carbon tetrachioride ND ug/L 1.0 SW8260B 08/28/09 1615 wen Chloroform ND ug/L 1.0 SW8260B 08/28/09 1615 wen Chloromethane ND ug/L 1.0 SW8260B 08/28/09 1615 /wen Methyl ethyl ketone ND ug/L 20 SW8260B 08/28/09 1615 wen Methylene chloride ND ug/L 1.0 SW8260B 08/28/09 1615 wen Naphthalene ND ug/L 1.0 SW8260B 08/28/09 1615 /wen Toluene ND ug/L 1.0 SW8260B 08/28/09 1615/wen Xylenes Total ND ug/L 1.0 SW8260B 08/28/09 1615 wen Surr Dibromofluoromethane 132 %REC 70-130 SW8260B 08/28/09 1615 wen Surr p-Bromofiuorobenzene 119 %REC 80-120 SW8260B 08/28/09 1615/wen Sum Toluene-d8 105 %REC 80-120 5W8260B 08/28/09 1615 /wen Sum 12.Dichlorobenzene-d4 111 %REC 80-120 5W8260B 08/28/09 1615/wen Report RL Analyte reporting limit MCL Maximum contaminant level DefinItions QCL Quality control limit ND Not detected at the reporting limit Spike recovery outside of advisory limits Client Project Lab ID Client Sample ID ENERGYL4BOR.4 TORIES INC 2393 Sail CreekHibway 82601 P0 Box 3258 Casper WY82602 To//Free 8882350515 307235.0515 Pa 3072%1639 casperenergy/ab.com wwwenergy/ab.coni LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 09/15/09 3rd Quarter Groundwater Collection Date 08/19/09 1342 C09080823-005 DateReceived 08/21/09 MW 65 Matrix Aqueous MCU Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mgL A2320 08/27109 192 dvg Bicarbonate as HCO3 421 mg/L A2320 08/27/09 192 dvg Calcium 485 mgL 0.6 E200.7 09/03/09 1643 aae Chloride 30 mg/L A4500-Cl 09/10/09 1339 jal Fluoride 0.2 mg/L 0.1 A4500-F 08/25/09 1337 dvg Magnesium 182 mgL 0.5 E200.7 09/04/09 1715 aae Nitrogen Ammonia as 0.90 mg/L 0.05 A4500-NH3 08/25/09 1222 /jal Nitrogen NitrateNitrite as ND mg/L 0.1 E353.2 08/27/09 1614/jal Potassium 12.3 mg/L 0.5 E200.7 09/03/09 1643 aae Sodium 216 mg/L 0.5 E200.7 09/03/09 1643 aae Sulfate 1980 mg/L 100 A4500-S04 09/10/09 1224 /jal PHYSICAL PROPERTIES pH 6.89 s.u 0.01 A4500-H 08/24/09 1606/dd Solids Total Dissolved TDS 180 3590 mg/L 10 A2540 08/24/09 1442 dd METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 08/26/09 0229 sml Beryllium ND ug/L 0.50 E200.8 08/27/09 0755 smi Cadmium 2.76 ug/L 0.50 E200.8 08/26/09 0229 sml Chromium ND ug/L 25 E200.8 08/26/09 0229 smi Cobalt 47 ug/L 10 E200.8 08/26/09 0229 smi Copper ND ug/L 10 E200.8 08/26/09 0229 sml Iron 7980 ug/L 30 E200.8 08/26/09 0229 sml Lead ND ug/L 1.0 E200.8 08/26/09 0229 sml Manganese 4990 ug/L 10 E200.8 08/26/09 0229 sml Mercury ND ugL 0.50 E200.8 08/26/09 0229 sml Molybdenum 11 ugL 10 E200.8 08/26/09 0229 sml Nickel 58 ug/L 20 E200.8 08/26/09 0229 sml Selenium ND ug/L 5.0 E200.8 08/26/09 0229 sml Silver ND ug/L 10 E200.8 08/27/09 0755 sml Thallium ND ug/L 0.50 E200.8 08/26/09 0229 sml Tin ND ug/L 100 E200.8 08/26/09 0229 smi Uranium 2.29 ug/L 0.30 E200.8 08/26/09 0229 sml Vanadium ND ug/L 15 E200.8 08/26/09 0229/sml Zinc 132 ug/L 10 E200.8 08/26/09 0229/sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 7.1 pCi/L E900.1 09/02/09 1832 cgr Gross Alpha minus Rn Precision 1.0 pCi/L E900.1 09/02/09 1832 cgr Gross Alpha minus Rn MDC 0.5 pCi/L E900.1 09/02/09 1832 /cgr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RL increased due to sample matrix interference ENERG YLABORA TORIES INC 2393 Sail Creek Highway 82601 P0 Box 3258 Caspei WV82602 Toll Free 888.2350515 3072350515 Fax 307234.1639 casperenergylab.com wwwenecgy/ab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 09/15/09 3rd Quarter Groundwater Collection Date 08/19/09 1342 C09080823-005 DateReceived 08/21/09 MW 65 Matrix Aqueous Client Project Lab ID Client Sample ID MCU Analyses Result Units Qualifiers RL QCL Method Analysis Date By DATA QUALITY NC Balance 0.0613 Calculation 09/11/09 0950 kbh Anions 48.9 meq/L Calculation 09/11/09 0950 kbh Cations 49.0 meqL Calculation 09/11/09 0950 kbh Solids Total Dissolved Calculated 3120 mg/L Calculation 09/11/09 0950 kbh TDS Balance0.80 1.20 1.15 Calculation 09/11/09 0950/kbh VOLATILE ORGANIC COMPOUNDS Acetone ND ugL 20 SW8260B 08/28/09 1652 wen Benzene ND ugL 1.0 5W82608 08/28/09 1652 wen Carbon tetrachloride ND ug/L 1.0 5W8260B 08/28/09 1652 wen Chloroform ND ugL 10 SW8260B 08/28/09 1652 wen Chloromethane ND ug/L 1.0 5W8260B 08/28/09 1652 wen Methyl ethyl ketone ND ugL 20 SW8260B 08/28/09 1652 wen Methylene chloride ND ugL 1.0 5W8260B 08/28109 1652 wen Naphthalene ND ug/L 1.0 SW8260B 08/28/091652 wen Toluene ND ug/L 1.0 SW8260B 08/28/09 1652 wen Xylenes Total ND ug/L 1.0 5W8260B 08/28/09 1652 wen Surr Dibromofluoromethane 124 %REC 70-130 SW8260B 08/28/09 1652 wen Sum p-Bromofluorobenzene 117 %REC 80-120 5W8260B 08/28/09 1652 wen Sum Toluene-d8 102 %REC 80-120 5W8260B 08/28/09 1652 wen Sum 2-Dichlorobenzene-d4 108 %REC 80-1 20 5W8260B 08/28/09 1652 wen Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERO YLABORA TORIES INC 2393 Salt Creek Hibway 82601 P0 Box 3258 Caspe/WY82602 Toll Free 888.235.0515 307235 0515 Fax 307234.1539 casperenergy/ab.com wwwenerqylab.comEIERCV LABORATORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10/02/09 Project 3rd Quarter Groundwater Collection Date 08/31/09 1217 Lab ID C09090094008 DateReceived 09/01/09 Client Sample ID MW 70 Matrix Aqueous MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 09/09/09 1430 dvg Bicarbonate as HCO3 493 mg/L A2320 09/09/09 1430 dvg Calcium 454 mg/L 2.5 E200.7 09/17/09 1503/cp Chloride 58 mg/L A4500-Cl 09121/09 1320 /jal Fluoride 3.0 mg/L 0.1 A4500-F 09/15/09 1227 dvg Magnesium 947 mg/L 0.86 E200.7 09/17/09 1503 cp Potassium 23.8 mg/L 1.0 E200.7 09/17/09 1503/cp Sodium 241 mg/L 2.3 E200.7 09/17/09 1503 cp Sulfate 5260 mg/L 60 A4500-504 09/16/09 1129 /jal PHYSICAL PROPERTIES pH 6.36 s.u 0.01 A4500-H 09/02109 1455 dd Solids Total Dissolved TDS 180 7610 mg/L 10 A2540 09/03/09 1437 dd METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 09/04/09 0706 smi Beryllium 2.10 ug/L 0.50 E200.8 09/08/09 2343/smI Cadmium 85.9 ug/L 0.50 E200.8 09/04/09 0706 sml Chromium ND ug/L 25 E200.8 09/04/09 0706 smi Cobalt 283 ug/L 10 E200.8 09/04/09 0706 sml Copper ND ug/L 10 E200.8 09/04/09 0706 sml Iron ND ug/L 30 E200.8 09/04/09 0706 sml Lead ND ug/L 1.0 E200.8 09/04/09 0706 sml Manganese 32100 ug/L 14 E200.7 09/17/09 1503 cp Mercury ND ug/L 0.50 E200.8 09/04/09 0706 sml Molybdenum 578 ug/L 10 E200.8 09/04/09 0706 sml Nickel 141 ug/L 20 E200.8 09/04/09 0706 sml Selenium 10.5 uglL 5.0 E200.8 09/04/09 0706 smi Silver ND ug/L 10 E200.8 09/08/09 2343 sml Thallium 1.18 ugL 0.50 E200.8 09/04/09 0706 smi Tin ND ug/L 100 E200.8 09/04/09 0706 sml Uranium 51.6 ug/L 0.30 E200.8 09/04/09 0706 smi Vanadium ND ug/L 15 E200.8 09/04/09 0706 sml Zinc 500 ug/L 10 E200.8 09/04/09 0706 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 3.4 pCi/L E900.1 09/24/09 1607 cgr Gross Alpha minus Rn Precision 0.9 pCi/L E900.1 09/24/09 1607 cgr Gross Alpha minus Rn MDC 0.9 pCi/L E900.1 09/24/09 1607 cgr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RL increased due to sample matrix interference ENERG YLABORA TORIES INC 2393 Sail Creek tI/zway 82601 PU Box 3258 Caspe WV82502 Toll Free 8882350515 3072350515 Fax 3072341639 casper4energy/aA corn wivwenergy/ab.cornE1ERGY LABORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10/02/09 Project 3rd Quarter Groundwater Collection Date 08/26/09 1402 Lab ID C09090094-004 DateReceived 09/01/09 Client Sample ID MW 70 Matrix Aqueous MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Nitrogen Ammonia as 0.94 mg/L 0.05 A4500-NH3 09/09/09 1606 /jal Nitrogen NitrateNitrite as 3.6 mg/L 0.2 E353.2 09/09/09 1111 jal VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 09/09/09 0907 wen Benzene ND ugL 1.0 SW8260B 09/09/09 0907 wen Carbon tetrachloride ND ugL 1.0 SW8260B 09/09/09 0907 wen Chloroform ND ugL 1.0 SW8260B 09/09/09 0907 wen Chloromethane ND ugL 1.0 SW8260B 09/09/09 0907 wen Methyl ethyl ketone ND ug/L 20 SW8260B 09/09/09 0907 wen Methylene chloride ND ugL 1.0 5W8260B 09/09/09 0907 wen Naphthalene ND ugIL 1.0 SW8260B 09/09/09 0907 wen Toluene ND ugIL 1.0 SW8260B 09/09/09 0907 wen Xylenes Total ND ug/L 1.0 SW8260B 09/09/09 0907 wen Surr Dibromofluoromethane 116 %REC 70-130 SW8260B 09/09/09 0907/wen Surr p-Bromofluorobenzene 104 %REC 80-120 SW8260B 09/09/09 0907 /wen Surr Toluene-d8 98.0 %REC 80-120 5W8260B 09/09/09 0907 wen Surr 2-Dichlorobenzene-d4 112 %REC 80-120 SW8260B 09/09/09 0907 wen Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL-Quality control limit ND Not detected at the reporting limit ENERGVLABORA TORIES INC 2393 Sail Creek Hiqbway 82601 Rc2 Box 3258 Caspe4c WY82602 Toll Free 888.235.0515 3072350515 Fax 307234 1639 casper4energylab.com wwwenergylab.cornEIERGY LA/7ORA OR/ES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10/02/09 Project 3rd Quarter Groundwater Collection Date 08/31/09 1217 Lab ID C09090094-008 DateRecelved 09/01/09 Client Sample ID MW 70 Matrix Aqueous MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By DATA QUALITY NC Balance -3.30 Calculation 09/25/09 0748 kbh Anions 119 meqL Calculation 09/25/09 0748/kbh Cations 112 meqL Calculation 09/25/09 0748 kbh Solids Total Dissolved Calculated 7230 mgL Calculation 09/25/09 0748 kbh TDS Balance 0.80-1.20 1.05 Calculation 09/25/09 0748/kbh Report RL Analyte reporting limit MCL-Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERGY LALLi//1 //F Client Project Lab ID Client Sample ID Trip Blank Analyses VOLATILE ORGANIC COMPOUNDS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane Methyl ethyl ketone Methylene chloride Naphthalene Toluene Xylenes Total Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 Report Definitions ENERG VLI4BORA TORIES INC 2393 Sail Creek Hirbway 82601 P0 Box 3258 Caspei WV82602 Toll Free 884235.0515 3072350515 Fn 307234.1639 casperºenergy/aAcom wwenergab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 09/15109 3rd Quarter Groundwater Collection Date 08/18/09 C09080768-008 DateReceived 08/20/09 Matrix Aqueous MCLI Result Units Qualifiers RL QCL Method Analysis Date By ND ug/L 20 SW8260B 08/26/09 0029 /jlr ND ug/L 1.0 SW8260B 08/26/09 0029 /jlr ND ug/L 1.0 SW8260B 08/26/09 0029/jIr ND ug/L 1.0 SW8260B 08/26/09 0029/jIr ND ug/L 1.0 5W8260B 08/26/09 0029 jir ND ug/L 20 SW8260B 08/26/09 0029 jir ND ug/L 1.0 5W8260B 08/26/09 0029 jir ND ug/L 1.0 SW8260B 08/26/09 0029/jlr ND ug/L 1.0 SW8260B 08/26/09 0029 jlr ND ug/L 1.0 SW8260B 08/26/09 0029 jlr 115 %REC 70-130 SW8260B 08/26/09 0029 IjIr 98.0 %REC 80-120 SW8260B 08/26/09 0029 IjIr 97.0 %REC 80-120 SW8260B 08/26/09 0029 /jlr 111 %REC 80-120 SW8260B 08/26/09 0029/jlr RL Analyte reporting limit MCL Maximum contaminant level QCL Quality control limit ND Not detected at the reporting limit ENERGYLASORA TORIES INC p2393 Salt Creek Hhway 82601 PC Box 3258 Caspe WV82602 Toll Free 888235.0515 307235.0515 Pc 307234.1639 casper4energy/ab.com wwwenergylab.corn LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 09/15/09 3rd Quarter Groundwater Collection Date 08/19/09 1420 C09080823-006 DateReceived 08/21/09 Matrix Aqueous Client Project Lab ID Client Sample ID Trip Blank MCLI Analyses Result Units Qualifiers RL QCL Method Analysis Date By VOLATiLE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 08/28/09 1730 wen Benzene ND ug/L 1.0 SW8260B 08/28/09 1730 wen Carbon tetrachioride ND ug/L 1.0 8W8260B 08/28/09 1730 wen Chloroform ND ug/L 1.0 SW8260B 08/28/09 1730 wen Chloromethane ND ug/L 1.0 SW8260B 08/28/09 1730 wen Methyl ethyl ketone ND ug/L 20 5W8260B 08/28/09 1730 wen Methylene chloride ND ug/L 1.0 SW8260B 08/28/09 1730 wen Naphthalene ND ug/L 1.0 SW8260B 08/28/09 1730 wen Toluene ND ug/L 1.0 SW8260B 08/28/09 1730 /wen Xylenes Total ND ug/L 1.0 SW8260B 08/28/09 1730 wen Surr Dibromofluoromethane 117 %REC 70-1 30 SW8260B 08/28/09 1730 wen Surr p-Bromofluorobenzene 115 %REC 80-120 8W8260B 08/28/09 1730 wen Sun Toluene-d8 104 %REC 80-120 SW8260B 08/28/09 1730 /wen Surr 2-Dichlorobenzene-d4 109 %REC 80-120 SW8260B 08/28/09 1730 wen Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERO VLASORA TORIES INC -2393 Sail Creek Hibway 82601 -P0 Box 3258 Caspe WV82602 Toll Free 888.235.0515-307235.0515 Fax 307234.1639 casperPenergylab.com wwwenergy/ab.comENERGY LAI3ORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10/02/09 Project 3rd Quarter Groundwater Collection Date 08/26/09 1502 Lab ID C09090094-009 DateReceived 09/01/09 Client Sample ID Trip Blank Matrix Aqueous MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 09/09/09 0943 wen Benzene ND ug/L 1.0 SW8260B 09/09/09 0943 wen Carbon tetrachloride ND ugL 1.0 SW8260B 09/09/09 0943 wen Chloroform ND ug/L 1.0 5W8260B 09/09/09 0943 wen Chloromethane ND ug/L 1.0 SW8260B 09/09/09 0943 wan Methyl ethyl ketone ND ugL 20 SW8260B 09/09/09 0943 wen Methylene chloride ND ugL 1.0 SW8260B 09/09/09 0943 wen Naphihalene ND ugL 1.0 SW8260B 09/09/09 0943 wen Toluene ND ugL 1.0 SW8260B 09/09/09 0943 wen Xylenes Total ND ug/L 1.0 8W8260B 09/09/09 0943 wen Surr Dibromofluoromethane 118 %REC 70-130 SW82608 09/09/09 0943 wan Surr p-Bromofluorobenzene 106 %REC 80-120 SW8260B 09/09/09 0943 wen Surr Toluene-d8 98.0 %REC 80-120 5W8260B 09/09/09 0943/wen Surr 2-Dichlorobenzene-d4 108 %REC 80-120 SW8260B 09/09/09 0943 wen Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERGYLAHORA TORIES INC 2393 Sail Creek Hitiway 82601 P0 Box 3258 Casper WY82602 Toil Free 888.235 0515 307235.0515 Pa 307234.1639 casperenergy/ab.com wwwenergylab.cornENSRGY LAI5OI1 OWLS LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09/18/09 Project 3rd Quarter Groundwater Collection Date 08/24/09 1422 Lab ID C09081 027-010 DateReceived 08/27/09 Client Sample ID Trip Blank Matrix Aqueous MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By VOLATILE ORGANIC COMPOUNDS Acetone 21 ug/L 20 5W8260B 08/31/09 1522/jlr Benzene ND ug/L 1.0 SW8260B 08/31/09 1522/jIr Carbon tetrachloride ND ug/L 1.0 SW8260B 08/31/09 1522 /jlr Chloroform ND ug/L 1.0 SW8260B 08/31/09 1522 /jlr Chloromethane ND ugIL 1.0 SW8260B 08/31/09 1522/jlr Methyl ethyl ketone ND ug/L 20 SW8260B 08/31/09 1522 jlr Methylene chloride ND ug/L 1.0 SW8260B 08/31/09 1522 /jlr Naphthalene ND ug/L 1.0 SW8260B 08/31/09 1522 /jlr Toluene ND ugh 1.0 SW8260B 08/31/09 1522 /jlr Xyienes Total ND ugIL 1.0 SW8260B 08/31/09 1522 /jlr Surr Dibromofluoromethane 179 %REC 70-130 SW8260B 08/31/09 1522 jlr Sum p-Bromofluorobenzene 169 %REC 80-120 SW8260B 08/31/09 1522 jir Surr Toluene-d8 158 %REC 80-120 SW8260B 08/31/09 1522 /jlr Surr 2-Dichlorobenzene-d4 202 %REC 80-1 20 SW8260B 08/31/09 1522 /jlr Internal standard recoveries were low and outside QC advisory limits which would cause high bias for any analytes detected Due to limited sample availability no reanalysis was performed Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit Spike recovery outside of advisory limits __________ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 82601 P0 Box 3258 Caspe WV82602 To//Free 888.235 0515 3072350515 Fax 307234.1639 casperGenergy/ab.corn nvw energy/ab corn LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 09118/09 Project 3rd Quarter Groundwater Collection Date 08/25/09 Lab ID C0908102701 DateReceived 08/27/09 Client Sample ID Temp Blank Matrix Aqueous MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By PHYSICAL PROPERTIES Temperature 2.0 E170.1 08/27/09 0920 kbh Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERGY LA/JORA TOR/ES ENERGYLASORA TORIES INC 2393 Sail Creek Hihway 82601 P0 8ox3258 Caspe.c WY82602 Toll Free 888.2350515 3072350515 Fat 307234.1639 casperQenergylab.com s.nntenergy/ab.comEIERGY LALIOR/4 TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 10/02/09 Project 3rd Quarter Groundwater Collection Date 08/31/09 Lab ID C09090094-010 DateReceived 09/01/09 Client Sample ID Temp Blank Matrix Aqueous MCLI Analyses Result Units Qualifiers RL QCL Method Analysis Date By PHYSICAL PROPERTIES Temperature 2.0 E170.1 09/01/09 1656/kbh Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit September 15 2009 Denison Mines USA Corp 6425 Hwy 191 Blanding UT 84511 ANALYTICAL SUMMARY REPORT Workorder No C09080768 Project Name 3rd Quarter Groundwater Report Approved By Steph nie Waidrop Reporting Supervisor ENERO YLABORA TORIES INC 2393 Sail CreekHirbway 8280 P0 5ox3258 Caspe WV82802 lb/I Free 888235.0515 307235.0515 Fa 307234.1639 casperenergy/ab.com wmscenergy/ab.com Quote ID C1640 POC Wells Monthly Groundwater Sampling C09080768-002 MW 3A 08/18/09 1035 08/20/09 Aqueous C09080768-003 MW 12 08/17109 0903 08/20/09 Aqueous C09080768-004 MW 17 08/18/09 0937 08/20/09 Aqueous C09080768-005 MW 23 08/18/09 1523 08/20/09 Aqueous Energy Laboratories Inc received the following samples for Denison Mines USA Corp on 8/20/2009 for analysis Sample ID Client Sample ID Collect Date Receive Date Matrix Test C09080768-001 MW 08/18/09 1132 08/20/09 Aqueous Metals by ICP/ICPMS Dissolved Extra Bottle Metals by ICP/ICPMS Dissolved Alkalinity QA Calculations Chloride Fluoride Nitrogen Ammonia Nitrogen Nitrate Nitrite pH Gross Alpha minus Rn222 and Uranium Solids Total Dissolved Sulfate SW8260B VOCs Standard List Metals by ICP/ICPMS Dissolved Extra Bottle Metals by ICP/ICPMS Dissolved Metals by ICP/ICPMS Dissolved Alkalinity QA Calculations Chloride Fluoride Nitrogen Ammonia Nitrogen Nitrate Nitrite pH Gross Alpha minus Rn222 and Uranium Solids Total Dissolved Sulfate SW8260B VOCs Standard List C09080768-006 MW 27 08/18/09 1352 08/20/09 Aqueous Same As Above C09080768-007 MW 28 08/17/09 1412 08/20/09 Aqueous Same As Above C09080768-008 Trip Blank 08/18/09 0000 08/20/09 Aqueous SW8260B VOCs Standard List As appropriate any exceptions or problems with the analyses are noted in the Laboratory Analytical Report the QA/QC Summary Report or the Case Narrative If you have any questions regarding these tests results please call ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 82601 20 Box 3258 Caspe WV82602 roll Free 888235.0515 307235 0515 Fax 307234.1639 casperenergy/ab.com nnvenergylab.com QA/QC Summary Report Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration LABOR/1T Client Denison Mines USA Corp Project 3rd Quarter Groundwater Report Date 09/15/09 Work Order C09080768 RPD RPDLimit QualAnalyteCountResultunitsRL%REC Low Limit High Limit Method A2320 Batch Ri 23000 Sample ID MBLK Alkalinity Total as CaCO3 Carbonate as C03 Bicarbonate as HCO3 Method Blank mgIL ND mg/L mg/L 0.2 Run MANTECH_090627A 08/27/09 1212 Sample ID LCSI Alkalinity Total as CaCO3 Laboratory Control Sample 185 mg/L 5.0 91 Run MANTECH_090827A 08/27/09 1227 90 110 Sample ID LCS AlkalinityTotalasCaCO3 Laboratory Control Sample 51.5 mg/L 5.0 97 Run MANTECH_090827A 08/27/09 1234 90 110 Sample ID C09080768-OO7AMS Alkalinity Total as CaCO3 Sample Matrix Spike 246 mg/L 5.0 97 Run MANTECH_090827A 08/27/09 1309 80 120 Sample ID C09080768-OO7AMSD Alkalinity Total as CaCO3 Sample Matrix Spike Duplicate 249 mg/L 5.0 99 Run MANTECH_090827A 08/2709 1316 80 120 1.3 20 Method A2540 Sample ID MBLKI_090821 Solids Total Dissolved TDS 160 Method Blank ND mg/L Batch 090821_1_SLDS-TDS-W Run BAL-1_090821A 08/21/09 1336 Sample ID LCS1 090821 Solids Total Dissolved TDS 180 Laboratory Control Sample 1010 mg/L 10 100 Run BAL-1_090821A 08/21/09 1337 90 110 Sample ID C09080768-OO5AMS Solids Total Dissolved TDS 180 Sample Matrix Spike 5620 mg/L 10 100 Run BAL-1_090821A 08121/09 1621 90 110 Sample ID C09080768-OO5AMSD Solids Total Dissolved TDS @180 Sample Matrix Spike Duplicate 5670 mg/L 10 103 Run BAL-1_090821A 08/21/09 1621 90 110 0.9 10 Method A4500-Cl Batch 090904-CL-TTR-W Sample ID MBLK9-090904 Chloride Method Blank ND mg/L 0.4 Run TITRATION_090904A 09/04/09 0842 Sample ID C09080917-OO4AMS Chloride Sample Matrix Spike 110 mgIL 3.0 99 Run TITRATION_090904A 09/0409 1144 90 110 Sample ID C09080917-OO4AMSD Chloride Sample Matrix Spike Duplicate 110 mg/L 3.0 99 Run TITRATION.990904A 09/04109 1144 90 110 10 Sample ID LCS35-090904 Chloride Laboratory Control Sample 3500 mg/L 1.0 98 Run TITRATION_090904A 09/04/09 1145 90 110 ND Not detected at the reporting limit EPERGY AITRA Ton/F Client Denison Mines USA Corp Project 3rd Quarter Groundwater ENERGYLABORA TORIES INC 2393 Sail Creek Hbway 82601 RQ Box 3258 Caspei WV82602 Toll Free 888.235.0515 307235 0515 Fa 3072341639 casper@energyIab.com wwwenergy/ab.com QAIQC Summary Report Report Date 09/15/09 Work Order C09080768 RPD RPDL1mit QualAnalyteCountResultUnitsRL%REC Low Limit High Limit Method A4500-F Batch Ri 22881 Sample ID MBLK Fluoride Method Blank ND mg/L 0.05 Run MANTECN._090825B 08/25/09 1116 Sample ID LCS Fluoride Laboratory Control Sample 1.02 mg/L 0.10 102 Run MANTECH_090825B 08/25/09 1119 90 110 Sample ID C09080759-OOIAMS Fluoride Sample Matrix Spike 1.25 mg/L 0.10 106 Run MANTECH_090825B 08/25/09 1137 80 120 Sample ID C09080759-OOIAMSD Fluoride Sample Matrix Spike Duplicate 1.23 mg/L 0.10 104 Run MANTECH_090825B 08/25/09 1140 80 120 1.6 10 Method A4600-H Sample ID ICVI_090821_2 pH Initial Calibration Verification Standard 6.9 s.u 0.010 100 Analytical Run ORION555A-2_090821 08/21/09 1426 98 102 Method A4500-H Sample ID C09080768-DO7ADIJP pH Sample Duplicate 6.4 s.u 0.010 Batch 090821_2_PH-W_555A-2 Run 0R10N555A-2_090821B 08/21/09 1453 Method A4500-NH3 Batch Ri 22875 Sample ID MBLK-1 Nitrogen Ammonia as Method Blank ND mg/L 0.02 Run TECHNICON_090825A 08/25/09 1053 Sample ID LCS-2 Nitrogen Ammonia as Laboratory Control Sample 19.8 mg/L 0.20 99 Run TECHNICON_090825A 08/25/09 1055 80 120 Sample ID C09080768-OO6DMS Nitrogen Ammonia as Sample Matrix Spike 1.95 mg/L 0.050 97 Run TECHNICON_090825A 08/25/09 1208 80 120 Sample ID C09080768-OO6DMSD Nitrogen Ammonia as Sample Matrix Spike Duplicate 1.92 mg/L 0.050 95 Run TECHNICON_090825A 08/25/09 1210 80 120 1.6 20 Method A4500-S04 Sample ID LCS-1_090908 Sulfate Laboratory Control Sample 4950 mg/L 59 103 Batch 090908_1_504-TURB-W Run TURB-2_090908A 09/08/09 1444 90 110 Sample ID MBLK-1390908 Sulfate Method Blank ND mg/L 0.6 Run TURB-2_090908A 09/08/09 1444 Sample ID C09080768-OO6AMS Sulfate Sample Matrix Spike 999 mg/L 15 108 Run TURB-2_090908A 09/08/09 1451 90 110 Sample ID C09080768-OO6AMSD Sulfate Sample Matrix Spike Duplicate 981 mg/L 15 104 Run TURB-2_090908A 09/08/09 1452 90 110 1.9 10 Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration ND Not detected at the reporting limit ENERGYLA SORA TORIES INC 2393 Sail Creek Highway 82601 P0 Box 3258 Caspe WV82602 To//Free 888235.0515 307235.0515 Fax 307.234.1639 casperenergy/ab.com wwwenergy/ab.com QA/QC Summary Report Report Date 09/15/09 Work Order C09080768 EIERGY DORA TOP/ES Client Denison Mines USA Corp Project 3rd Quarter Groundwater Method E200.7 Sample ID MB-090910A Calcium Magnesium Potassium Sodium Sample ID LFB-090910A Calcium Magnesium Potassium Sodium Method Blank ND ND ND ND Laboratory Fortified Blank 44.8 mg/L 44.8 mg/L 43.4 mg/L 43.1 mg/L Run ICP2-C_09091 OA 90 85 115 90 85 115 87 85 115 86 85 115 Sample ID C09080768-007BM52 Sample Matrix Spike Calcium 743 mg/L Magnesium 400 mg/L Potassium 230 mg/L Sodium 526 mg/L Run ICP2-C_09091 OA 1.3 85 70 130 1.0 91 70 130 1.0 86 70 130 1.2 88 70 130 09/10/09 1515 1.3 1.0 1.0 1.2 Run ICP2-C_09091 OA 87 70 130 92 70 130 86 70 130 94 70 130 09/10/09 1519 0.6 20 0.6 20 0.7 20 2.7 20 Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Batoh Ri 23581 mg/L mg/L mg/L mg/L Run ICP2-C_090910A 0.2 0.09 0.1 0.2 0.50 0.50 0.50 0.50 09/10/09 1309 09/10/09 1313 Sample ID C09080768-OO7BMSD Sample Matrix Spike Duplicate Calcium 747 mg/L Magnesium 403 mg/L Potassium 232 mg/L Sodium 541 mg/L ND Not detected at the reporting limit QAIQC Summary Report Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method E200.8 Sample ID LRB Arsenic Cadmium Chromium Cobalt Copper Iron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc Arsenic Cadmium Chromium Cobalt ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L 4E-05 mg/L 9E-05 mg/L ND mg/L ND mg/L ND mg/L ND mg/L 0.0002 mg/L 5E-05 4E-05 4E-05 4E-05 7E-05 0.0006 2E-05 3E-05 4E-05 0.0001 6E-05 SE-OS 4E-05 3E-05 0.0006 3E-05 4E-05 0.0002 EIERCY /1/10/Ri OR/I ENERGYLA SOfiA TORIES INC 2393 Sail Creek Hbway 82601 PC Box 3258 Caspei WV82602 Toil Free 8882350515 3072350515 Fax 307234.1639 casperenergy/ab.com www.energylab.com Client Denison Mines USA Corp Project 3rd Quarter Groundwater fl Method Blank Report Date 09/15/09 Work Order C09080768 Batch R122891 Sample ID LFB Arsenic Cadmium Chromium Cobalt Copper iron Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Vanadium Zinc Run 1CPMS4-C_090825A Run ICPMS4-C_090825A 108 85 115 109 85 115 108 85 115 107 85 115 109 85 115 105 85 115 108 85 115 110 85 115 110 85 115 109 85 115 110 85 115 110 85 115 106 85 115 104 85 115 110 85 115 103 85 115 108 85 115 112 85 115 Run ICPMS4 C_090825A 107 70 130 100 70 130 104 70 130 100 70 130 08/25/09 1147 08/25/09 1152 08/25/09 2203 Laboratory Fortified Blank 0.0541 mg/L 0.0547 mg/L 0.0538 mg/L 0.0536 mg/L 0.0546 mg/L 1.31 mg/L 0.0539 mg/L 0.0550 mg/L 0.00552 mg/L 0.0546 mg/L 0.0548 mg/L 0.0550 mg/L 0.0213 mg/L 0.0520 mg/L 0.0551 mg/L 0.0514 mg/L 0.0542 mg/L 0.0561 mg/L 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.00030 0.0010 0.0010 0.0010 0.010 0.050 0.010 Sample ID C09080765-OO2AMS4 fl Sample Matrix Spike Qualifiers 0.0911 mg/L 0.0499 mg/L 0.0544 mg/L 0.0500 mg/L RL Analyte reporting limit MDC Minimum detectable concentration ND Not detected at the reporting limit ENERGYLABORA TORIES INC 2393 Sail Creek Hjbway 82601 P0 Box 3258 Casper WV82602 roll Free 888.235.0515 307235.0515 Fax 307234.1639 casperenergyIab.com www.energylab.com QAIQC Summary Report Report Date 09/15/09 Work Order 009080768 ENERGY /IHIA OI1II-.c Client Denison Mines USA Corp Project 3rd Quarter Groundwater Sample ID C09080765-002AM54 Sample Matrix Spike Copper 0.0506 mg/L Iron 1.28 mg/L Lead 0.0524 mg/L Manganese 0.598 mg/L Mercury 0.00522 mg/L Molybdenum 0.170 mg/L Nickel 0.0507 mg/L Selenium 0.0490 mg/L Silver 0.01 82 mg/L Thallium 0.0492 mg/L Tin 0.0519 mg/L Uranium 0.0510 mgIL Vanadium 0.0548 mg/L Zinc 0.0564 mg/L Run ICPMS4-C_090825A 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 0.0010 0.010 0.050 0.010 0.010 0.030 0.050 0.010 0.0010 0.10 0.050 0.0010 0.010 0.0010 0.0010 0.00030 0.0010 0.010 Run ICPMS4-C_090825A 105 70 130 99 70 130 104 70 130 98 70 130 91 70 130 101 70 130 103 70 130 70 130 103 70 130 98 70 130 99 70 130 97 70 130 91 70 130 97 70 130 103 70 130 100 70 130 107 70 130 97 70 130 08/25/09 2208 1.1 20 1.2 20 0.4 20 1.8 20 1.4 20 0.7 20 1.6 20 2.6 20 1.4 20 20 1.2 20 1.1 20 0.1 20 1.2 20 0.3 20 1.7 20 0.9 20 2.4 20 RL Analyte reporting limit The analyte level was greater than four times the spike level In accordance with the method recovery is not calculated MDC Minimum detectable concentration Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit QuaL Method E200.8 Batch Ri 22891 08/25/09 2203 0.010 0.030 0.050 0.010 0.0010 0.10 0.050 0.0010 0.010 0.0010 0.0010 0.00030 0.0010 0.010 92 102 105 104 105 100 98 91 98 104 102 108 99 Sample ID C09080765-OO2AMSD fl Sample Matrix Spike Duplicate Arsenic 0.0901 mg/L Cadmium 0.0493 mg/L Chromium 0.0542 mg/L Cobalt 0.0492 mg/L Copper 0.0500 mgIL Iron 1.27 mg/L Lead 0.0515 mg/L Manganese 0.583 mg/L Mercury 0.00515 mg/L Molybdenum 0.167 mg/L Nickel 0.0501 mg/L Selenium 0.0485 mg/L Silver 0.0182 mg/L Thallium 0.0486 mg/L Tin 0.0517 mg/L Uranium 0.0501 mg/L Vanadium 0.0543 mg/L Zinc 0.0551 mg/L Qualifiers ND Not detected at the reporting limit ENERGVLASORA TORIES INC 2393 Sail CreekH4hway 82601 P0 Box 3258 Caspes WV82602 Toll Free 885235.0515 307.235.0515 Fa 307.234.1639 casperenergy/ab.com www.energylatz corn QA/QC Summary Report Report Date 09/15109 Work Order C09080768 EPERCY LALof1 toteit Client Denison Mines USA Corp Project 3rd Quarter Groundwater Analyte Method E200.8 Sample ID IRS Arsenic Beryllium Cadmium Chromium Lead Mercury Molybdenum Nickel Silver Thallium Tin Uranium Vanadium Zinc Count Result Units 14 Method Blank ND mg/I ND mg/I ND mg/I ND mg/I ND mg/I 6E-05 mg/I ND mg/I ND mg/I 8E-05 mg/I ND mg/I ND mg/I ND mg/I ND mg/I 0.0009 mgIL RL %REC Low Limit High Limit 5E-05 6E-05 4E-05 4E-05 2E-05 4E-05 0.0001 6E-05 4E-05 3E-05 0.0006 3E-05 4E-05 0.0002 Run ICPMS4-C_090826B RPD RPDLimit Qual Batch Ri 22952 08/26/09 2118 Sample ID C09080917-003BM54 14 Sample Matrix Spike Arsenic 0.0639 mg/L Beryllium 0.0516 mg/L Cadmium 0.0551 mg/L Chromium 0.0540 mg/L Lead 0.0666 mg/L Mercury 0.00509 mg/L Molybdenum 0.0700 mg/L Nickel 0.0729 mg/L Silver 0.0215 mg/I Thallium 0.0531 mg/L Tin 0.0588 mg/L Uranium 0.0556 mg/L Qualifiers 08/26/09 2123SampleIDIFB Arsenic Beryllium Cadmium Chromium Lead Mercury Molybdenum Nickel Silver Thallium Tin Uranium Vanadium Zinc 14 Laboratory Fortified Blank 0.0538 mg/I 0.0540 mg/L 0.0537 mg/I 0.0536 mg/I 0.0529 mg/I 0.00532 mg/I 0.0526 mg/I 0.0543 mg/I 0.0216 mg/I 0.0517 mg/I 0.0532 mg/I 0.0529 mg/I 0.0535 mg/I 0.0564 mg/I 108 108 107 107 106 105 105 109 107 103 106 106 107 111 Run ICPMS4-C_090826B 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 0.0010 0.010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.00030 0.0010 0.0010 0.0010 0.010 0.010 0.050 0.050 0.0010 0.10 0.050 0.010 0.10 0.10 0.00030 08/27/09 0638RunICPMS4-C_090826B 106 70 130 103 70 130 110 70 130 104 70 130 100 70 130 102 70 130 108 70 130 105 70 130 107 70 130 106 70 130 113 70 130 107 70 130 RI Analyte reporting limit MDC Minimum detectable concentration ND Not detected at the reporting limit ENERGVLAHORA TORIES INC 2393 Sail Creek HIghway 82601 RO Box 3258 aspe WY82602 To/I Free 888235.0515 3072350515 Fax 307234.1639 casperenergy/ab.com wwnnergy/ab.com QA/QC Summary Report Report Date 09115/09 Work Order C09080768 FIERGY /111 /tl ////- Client Denison Mines USA Corp Project 3rd Quarter Groundwater Method E900.1 Sample ID MB-GA-0259 Gross Alpha minus Rn Gross Alpha minus Rn Precision Gross Alpha minus Rn MDC Sample ID LCS-GA-0259 Gross Alpha minus Rn 0.7 pCiJL 0.4 pCi/L 0.4 pCi/L Laboratory Control Sample 30.1 pCi/L Run G5000W_090821 112 70 130 Sample ID C09080768-OO2CMS Gross Alpha minus Rn Sample Matrix Spike 25.6pCiIL Run G5000W_090821 89 70 130 08/24/09 14.45 Sample ID C09080768-OO2CMSD Gross Alpha minus Rn Qualifiers Sample Matrix Spike Duplicate 25.5pCi/L Run G5000W_090821 88 70 130 08/24/09 1445 0.1 23.3 RL Analyte reporting limit The analyte level was greater than four times the spike level In accordance with the method recovery is not calculated MDC Minimum detectable concentration Analyte Count Result Units RL %REC Low LImit High Limit RPD RPDLimit Qual Method E200.8 Batch Ri 22952 Sample ID C09080917-OO3BMS4 Vanadium Zinc 14 Sample Matrix Spike 0.0554 mg/L 0.644 mg/L 0.10 0.010 105 Run ICPMS4-C_090826B 70 130 70 130 08/27/09 0638 Sample ID C09080917-OO3BMSD Arsenic Beryllium Cadmium Chromium Lead Mercury Molybdenum Nickel Silver Thallium Tin Uranium Vanadium Zinc 14 Sample Matrix Spike Duplicate 0.0627 mg/L 0.0499 mg/L 0.0536 mg/L 0.0529 mg/L 0.0661 mg/L 0.00509 mg/L 0.0681 mg/L 0.0712 mg/L 0.0178 mg/L 0.0512 mg/L 0.0595 mg/L 0.0546 mg/L 0.0539 mg/L 0.644 mg/L 0.0010 0.010 0.010 0.050 0.050 0.0010 0.0010 0.050 0.010 0.0010 0.0010 0.00030 0.0010 0.010 103 99 107 102 99 102 104 102 88 102 114 105 102 Run ICPMS4-C_090826B 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 1.9 3.4 2.8 2.2 0.7 0.1 2.7 2.3 19 3.8 1.2 1.9 2.7 08/27/09 0643 20 20 20 20 20 20 20 20 20 20 20 20 20 20 Method E353.2 Batch R122994 Sample ID MBLK-1 Nitrogen NitrateNitrite as Method Blank ND mg/L 0.03 Run TECHNICON_090827A 08/27/09 1412 Sample ID LCS-2 Nitrogen NitrateNitrite as Laboratory Control Sample 2.57 mg/L 0.10 103 Run TECHNICON_090827A 90 110 08/27/09 1414 Sample ID C090S076S-OO7DMS Nitrogen NitrateNitrite as Sample Matrix Spike 2.30 mg/L 0.10 107 Run TECHNICON_090827A 90 110 08/27/09 1547 Sample ID C09080768-OO7DMSD Nitrogen NitrateNitrite as Sample Matrix Spike Duplicate 2.29 mg/L 0.10 106 Run TECHNICON_090827A 90 110 0.4 08/27/09 1549 10 Batch GA-0259 Method Blank Run G5000W_090821 08/24/09 1253 08/24/09 1253 ND Not detected at the reporting limit QA/QC Summary Report Method SW8260B Sample ID 25-Aug-09_LCS.4 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane mp-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes Total Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane mp-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes Total Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 100 ug/L 11 ug/L 12 ug/L 11 ug/L 10 ug/L 20 ug/L 96 ug/L 11 ug/L 9.7 ug/L 10 ug/L 11 ug/L 31 ug/L ND ugIL ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND uy/L ND ug/L Sample ID C09080717-OOIAMS Sample Matrix Spike Acetone 2000 ug/L Benzene 280 ug/L 180 ug/L 190 ug/L 130 ug/L 470 ug/L 2200 ug/L 160 ug/L Qualifiers 20 104 70 130 1.0 114 70 130 1.0 115 70 130 1.0 109 70 130 1.0 102 70 130 1.0 101 70 130 20 96 70 130 1.0 107 70 130 1.0 97 70 130 1.0 104 70 130 1.0 106 70 130 1.0 102 70 130 1.0 106 70 130 1.0 103 80 130 1.0 101 80 120 1.0 97 80 120 20 1.0 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 1.0 1.0 101 1.0 94 1.0 94 1.0 106 70 130 80 120 80 120 80 120 Run 5975V0C1_090825A 08/26/09 0444 70 130 70 130 70 130 95 70 130 64 70 130 117 70 130 109 70 130 82 70 130 RL Analyte reporting limit MDC Minimum detectable concentration ND Not detected at the reporting limit Spike recovery outside of advisory limits EIERGY /1 IKfA ffL ENERGYLABORA TORIES INC 2393 Sail Creek Hiqbway 82501 -AC 3ox3258 Casper WV82502 Toll Free 883235.0515 307235.0515 Fax 3072341539 casperenergy/ab.com wivwenergy/ab.com Client Denison Mines USA Corp Project 3rd Quarter Groundwater Count Result Units Report Date 09/15/09 Work Order C09080768 Laboratory Control Sample RL %REC Low Limit High Limit RPD RPDLimit Qual Batch R122957 Run 5975V0C1_090825A 08/25/09 1338 Sample ID 25-Aug-09_MBLK_7 Method Blank Run 5975V0C1_090825A 08/25/09 1525 Carbon tetrachloride Chloroform Chloromethane mp-Xylenes Methyl ethyl ketone Methylene chloride 102 141 91 400 20 20 20 20 20 400 20 ENERGVLABOR44 TORIES INC 2393 Sail Creek Hi/7way 82501 RC Box 3258 Caspe WV82502 Toil Free 888.235.0515 307235.0515 Fax 307234.1539 casperenergy/ab.com wwwenergy/ab.comENERGY LAI3ORA TORI/Ic QAIQC Summary Report Client Denison Mines USA Corp Report Date 09/15/09 Project 3rd Quarter Groundwater Work Order C09080768 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method SW8260B Batch Ri 22957 Sample ID C09080717-0OIAMS j.Q Sample Matrix Spike Run 5975V0C1_090825A 08/26/09 0444 Naphthalene 360 ug/L 20 178 70 130 o-Xylene 230 ug/L 20 115 70 130 Toluene 290 ug/L 20 144 70 130 Xylenes Total 700 ug/L 20 116 70 130 Surr Dibromofluoromethane 20 92 70 130 Surr p-Bromofluorobenzene 20 97 80 120 Surr Toluene-d8 20 100 80 120 Surr 12-Dichlorobenzene-d4 20 99 80 120 Sample ID C09080717-OOIAMSD Sample Matrix Spike Duplicate Run 5975V0C1_090825A 08/26/09 0520 Acetone 1900 ug/L 400 96 70 130 Benzene 250 ug/L 20 124 70 130 12 20 Carbon tetrachloride 180 ug/L 20 90 70 130 0.9 20 Chloroform 190 ug/L 20 96 70 130 1.3 20 Chloromethane 130 ug/L 20 64 70 130 1.3 20 mp-Xylenes 410 ug/L 20 103 70 130 13 20 Methyl ethyl ketone 2400 ug/L 400 118 70 130 7.4 20 Methylene chloride 160 ug/L 20 80 70 130 2.5 20 Naphthalene 310 ug/L 20 70 130 13 20 o-Xylene 210 ug/L 20 105 70 130 9.1 20 Toluene 230 ug/L 20 116 70 130 21 20 Xylenes Total 620 ug/L 20 103 70 130 12 20 Surr Dibromofluoromethane 20 94 70 130 10 Surr p-Bromofluorobenzene 20 99 80 120 10 SurrToluene-d8 20 100 80 120 10 Surr 2-Dichlorobenzene-d4 20 100 80 120 10 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration RPD exceeds advisory limit Spike recovery outside of advisory limits Co m p a n y Na m e $i t s Re p o r t Ma i l Ad d r e s A In v o i c e Ad d r e s s Sp e c i a l R e p o r t / F o r m a t s LI DW LI ED D / E D T E l e c t r o n i c Da t a LI PO T W / W W T P Fo r m a t _ _ _ _ _ _ _ _ _ LI St a t e LI LE V E L IV LI Ot h e r LN E L A C Pr o j e c t Na m e PW S Pe r m i t Et c Sa m p l e Or i g i n EP A / S t a t e Co m p l i a n c e sA wz z t 1n w 4 jj f t St a t e Ye s No Co n t a c t Na m e Ph o n e / F a x Em a i l Sa m p l e r Pl e a s e Pr i n t 2o i Pg t i 4c 1f f zz z j iZ tk / / J r n u In v o i c Co n t a c t ho n e Pu r c h a s e O r d e r Qu o t e / B o t t l e Or d e r . - Co n t a c t EL I pr i o r to sh i p p e d by RU S H sa m p l e s u b m i t t a l LI 3 tA V S Cl fo r ch a r g e s an d co o l e r to s sc h e d u l i n g - S e e In s t r u c t i o n Pa g e cI Re c e i p t l e m p Co m m e n t s a3 iE -f l r On i c e ON za 0 .1 Cu s t o d y s e a l On Bo t t l e Cl On Co o l e r Cl In t a c t si g n a t u r e MA T R I X -v i iI I I I T T Ma t c h -4 fl c g g a 7 l- J II I I I I i i /f r t l X- - - - - - - - - - - - ii i i i i i i i i i i i i SA M P L E ID E N T I F I C A T I O N Na m e Lo c a t i o n In t e r v a l et c Co l l e c t i o n Da t e Co l l e c t i o n Ti m e yW - 3 rf l L J - 3 / l ni w - i 2 pP 1 W J 7 fl l p V . - 2 3 1T h i e . f l yv p v I S Th t I O Th e a 10 S1 t O f St W 4 ri i o 9 Z- J S $ 1t 1 Y 1 iJ c - o f ti f 1/ 3 2 14 3 5 70 3 iS jS 2 3 3s 2 IU Z Cu s t o d y Re c o r d MU S T be Si g n e d Te c e w e d b y p n n t Da t e / T i m e Sig n a t u r e Re I i n n t i i s A by pr i n t Da t e / l i m e ri n t t 1 4 t _ 1 Re c e i v e d by pr i n t Da t e / T i m e 5ig n a t u r e Ta t Lla t e i im e sig n a l Re c e i v e l by La b o r a t o r y Da t e / T i m e Sig n a t u r e Sa m p l e Dis p o s a l Re t u r n to Cli e n t La b Dis p o s a l ft - 1\ t I Q .u w o u n S- i ac In ce r t a i n ci r c u m s t a n c e s sa m p l e s su b m i t t e d to En e r g y La b o r a t o r i e s In c ma y be su b c o n t r a c t e d to ot h e r ce r t i f i e d la b o r a t o r i e s in or d e r to co m p l e t e th e an a l y s i s re q u e s t e d Th i s se r v e s as no t i c e of th i s po s s i b i l i t y All su b - c o n t r a c t d a t a wil l be cl e a r l y no t a t e d on yo u r an a l y t i c a l r e p o r t Vis i t ou r we b si t e at ww w . e n e r g y l a b . c o m fo r ad d i t i o n a l in f o r m a t i o n do w n l o a d a b l e fe e sc h e d u l e fo r m s an d li n k s EI E R G Y LA B O R / 1 T O R I E S Ch a i n of Cu s t o d y an d An a l y t i c a l Re q u e s t Re c o r d Pa g e of PL E A S E PR I N T Pr o v i d e as mu c h in f o r m a t i o n as po s s i b l e Energy Laboratories Inc Wo rkorder Receipt Checklist Denison Mines USA Corp C09080768 Login completed by Corinne Wagner Date and Time Received 8/20/2009 930AM Reviewed by Received by ha Reviewed Date Carrier name Next Day Air Shippingcontainer/cooleringoodcondition Yes No fl NotPresent Custody seals intact on shipping container/cooler Yes No Not Present LI custody seals intact on sample bottles Yes fl No LI Not Present Chain of custody present Yes No chain of custodysigned when relinquished and received Yes No LI Chain of custody agrees with sample labels Yes No LI Samples in proper container/bottle Yes No LI Samplecontainers intact Yes No LI Sufficient sample volume for indicated test Yes No LI All samples received within holding time Yes No LI Container/Temp Blank temperature 4t On Ice Water VOA vials have zero headspace Yes No LI No VOA vials submitted LI Water-pI-Iacceptableuponreceipt Yes No LI NotApplicable LI Contact and Corrective Action Comments Samples MW and MW 12 had voa vials that were not listed on the COC Per conversation with Ryan Palmer do not analyze these samples 8/21/09 TP ENERG YLABORA TORIES INC 2393 Salt CreekHihway 8260 P0 Box 3258 Caspe WV82602 Toll Free 888.235.0515 307.235.0515 Fax 307.234.1639 casper@energylab.com wwwenergylab.com Denison Mines USA Corp Date 15-Sep-09CLIENT Project Sample Delivery Group C09080768 ORIGINAL SAMPLE SUBMITTALS All original sample submittals have been returned with the data package SAMPLE TEMPERATURE COMPLIANCE 4C 2C Temperature of samples received may not be considered properly preserved by accepted standards Samples that are hand delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun GROSS ALPHA ANALYSIS Method 900.0 for gross alpha and gross beta is intended as drinking water method for low TDS waters Data provided by this method for non potable waters should be viewed as inconsistent RADON IN AIR ANALYSIS The desired exposure time is 48 hours days The time delay in returning the canister to the laboratory for processing should be as short as possible to avoid excessive decay Maximum recommended delay between end of exposure to beginning of counting should not exceed days SOILJSOLID SAMPLES All samples reported on an as received basis unless otherwise indicated ATRAZINE SIMAZINE AND PCB ANALYSIS Data for PCBs Atrazine and Simazine are reported from EPA 525.2 PCB data reported by ELI reflects the results for seven individual Aroclors When the results for all seven are ND not detected the sample meets EPA compliance criteria for PCB monitoring SUBCONTRACTING ANALYSIS Subcontracting of sample analyses to an outside laboratory may be required If so ENERGY LABORATORIES will utilize its branch laboratories or qualified contract laboratories for this service Any such laboratories will be indicated within the Laboratory Analytical Report BRANCH LABORATORY LOCATIONS eli-b Energy Laboratories Inc Billings MT eli-g Energy Laboratories Inc Gillette WY eli-h Energy Laboratories Inc Helena MT eli-r Energy Laboratories Inc Rapid City SD eli-t Energy Laboratories Inc College Station TX CERTIFICATIONS USEPA WY00002 Radiochemical WY00937 FL-DOH NELAC E87641 Radiochemical E871 017 California 021 I8CA Oregon VW20000I Utah 3072350515 Virginia 00057 Washington C1903 ISO 17025 DISCLAIMER The results of this Analytical Report relate only to the items submitted for analysis ENERGY LABORATORIES INC CASPERWY certifies that certain method selections contained in this report meet requirements as set forth by the above accrediting authorities Some results requested by the client may not be covered under these certifications All analysis data to be submitted for regulatory enforcement should be certified in the sample state of origin Please verify ELIs certification coverage by visiting www.energylab.com ELI appreciates the opportunity to provide you with this analytical service For additional information and services visit our web page www.energylab.com 3rd Quarter Groundwater CASE NARRATIVE EIERGY LAROR1 TORIES THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT 08/19/09 1127 08/21/09 08/19/09 1420 08/21/09 Aqueous Aqueous Report Approved By Cx Stephanie Waidrop Reporting Supervisor ENERO VL.4BORA TORIES INC 2393 Sail Creek Hihway 82601 P0 Box 3258 Casper WV82602 To//Free 888.2350515 3072350515 Fax 3072341639 casperilenegyIab.com www.energylab.com ANALYTICAL SUMMARY REPORT September 15 2009 Denison Mines USA Corp 6425 Hwy 191 Blanding UT 84511 Workorder No C09080823 Quote ID C1640 POC Wells Monthly Groundwater Sampling Project Name 3rd Quarter Groundwater Energy Laboratories Inc received the following samples for Denison Mines USA Corp on 8121/2009 for analysis Sample ID Client Sample ID Collect Date Receive Date Matrix Test C09080823-001 MW 14 08/19/09 0915 08/21/09 Aqueous Metals by ICP/ICPMS Dissolved Alkalinity QA Calculations Chloride Fluoride Nitrogen Ammonia Nitrogen Nitrate Nitrite pH Gross Alpha minus Rn222 and Uranium Solids Total Dissolved Sulfate SW8260B VOCs Standard List C09080623-002 MW 15 Metals by ICP/ICPMS Dissolved C09080823-003 MW 26 Metals by ICP/ICPMS Dissolved Alkalinity QA Calculations Chloride Fluoride Nitrogen Ammonia Nitrogen Nitrate Nitrite pH Gross Alpha minus Rn222 and Uranium Solids Total Dissolved Sulfate SW8260B VOCs Standard List C09080823-004 MW 32 08/19/09 1342 08/21/09 Aqueous Same As Above C09080823-005 MW 65 08/19/09 1342 08/21/09 Aqueous Same As Above C09080623-006 Trip Blank 08/19/09 1420 08/21/09 Aqueous 5W8260B VOCs Standard List As appropriate any exceptions or problems with the analyses are noted in the Laboratory Analytical Report the QNQC Summary Report or the Case Narrative If you have any questions regarding these tests results please call Client Denison Mines USA Corp Project 3rd Quarter Groundwater ENERGYLABORA TORIES INC 2393 Sail Creek Highway 82501 P0 Box 3258 Caspe WV82502 Toll Free 888235.0515 307235.0515 Fax 307234.1539 casperenergy/ab.com wwwenergy/ab.coni QAIQC Summary Report Report Date 09/15/09 Work Order C09080823 RPD RPDL1mIt QualAnalyteCountResultUnitsRL%REC Low Limit High Limit Method A2320 Batch R123000 Sample ID MBLK Alkalinity Total as CaCO3 Carbonate as C03 Bicarbonate as HCO3 Method Blank mg/L ND mg/L mg/L 0.2 Run MANTECH_090827A 08/27/09 1212 Sample ID LCSI Alkalinity Total as CaCO3 Laboratory Control Sample 185 mg/L 5.0 91 Run MANTECH_090827A 08127/09 1227 90 110 Sample ID LCS Alkalinity Total as CaCO3 Laboratory Control Sample 51.5 mg/L 5.0 97 Run MANTECII_090827A 08/27/09 1234 90 110 Sample ID C09060768-OO7AMS Alkalinity Total as CaCO3 Sample Matrix Spike 246 mgIL 5.0 97 Run MANTECH_090827A 08/27/09 1309 80 120 Sample ID C09080768-OO7AMSD Alkalinity Total as CaCO3 Sample Matrix Spike Duplicate 249 mg/L 5.0 99 Run MANTECII_090827A 08/27/09 1316 80 120 1.3 20 Method A2540 Sample ID MBLKI_090824 Solids Total Dissolved TDS 180 Method Blank ND mg/L Batch 090824_1_SLDS-TDS-W Run BAL-1_090824B 08/24/09 1430 Sample ID LCSI_090824 Solids Total Dissolved TDS 180 Laboratory Control Sample 1000 mg/L 10 100 Run BAL-1_090824B 08/24/09 1430 90 110 Sample ID C09080827-OO4AMS Solids Total Dissolved TDS 180 Sample Matrix Spike 2890 mg/L 10 100 Run BAL-1_090824B 08/24/09 1444 90 110 Sample ID C09080827-O04AMSD Solids Total Dissolved TDS 180 Sample Matrix Spike Duplicate 2880 mg/L 10 100 Run BAL-1_090824B 08/24/09 1445 90 110 0.3 10 Method A4500-CI Sample ID MBLK9-090910A Chloride Method Blank ND mg/L 0.4 Batch 090910A-CL-TTR-W Run TITRATIONO9O91OB 09/10/09 1255 Sample ID C09090164-0OIAMS Chloride Sample Matrix Spike 37.1 mg/L 1.0 103 Run TITRATION_090910B 09/10/09 1423 90 110 Sample ID C09090164-OOIAMSD Chloride Sample Matrix Spike Duplicate 36.7 mg/L 1.0 102 Run TITRATIONO9O91OB 09/10/09 1425 90 110 10 Sample ID LCS35-090910A Chloride Laboratory Control Sample 3500 mg/L 1.0 99 Run TITRATIONfi9O9IOB 09/10/09 1426 90 110 Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration ND Not detected at the reporting limit Analyte Method A4500-F Sample ID MBLK Fluoride Sample ID LCS Fluoride Sample ID C09080823-OO3AMS Fluoride Sample ID C09080823-OO3AMSD Fluoride Method A4500-H Sample ID ICVI_090824_2 pH Method A4500-H Sample ID C09080823-OOIADUP pH Method A4500-NH3 Sample ID MBLK-1 Nitrogen Ammonia as Sample ID LCS-2 Nitrogen Ammonia as Sample ID C09080768-OO6DMS Nitrogen Ammonia as Sample ID C09080768-OO6DMSD Nitrogen Ammonia as Method A4500-S04 Sample ID LC$-1_090910 Sulfate Sample ID MBIK-1_090910 Sulfate Sample ID C09080952-OO2AMS Sulfate Sample ID C09080952-OO2AMSD Sulfate Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration Client Denison Mines USA Corp Project 3rd Quarter Groundwater ENERGYL.4SORA4 TORIES INC 2363 Sail Creek Hjtv/way 82601 P0 Box 3258 Caspe WV82602 roll Free 888235.0515 3072350515 Fax 307234.1539 casperenergy/ab.com aswwenergy/ab.com QA/QC Summary Report Report Date 09/15/09 Work Order C09080823 Count Result Units Method Blank ND mg/L Laboratory Control Sample 1.02 mg/I Sample Matrix Spike 1.28 mg/L Sample Matrix Spike Duplicate 1.28 mg/I 0.05 0.10 0.10 0.10 initial Calibration 6.90 Verification s.u Standard 0.010 101 98 102 Sample Duplicate 7.09 s.u 0.010 RL %REC Low limit High Limit RPD RPDLimit Qual Batch Ri 22881 Run MANTECH_090825B 08/25/09 1116 Run MANTECHO9O825B 08/25/09 1119 102 90 110 Run MANTECH_090825B 08/25/09 1329 99 80 120 Run MANTECH_090825B 08/25/09 1331 99 80 120 10 Analytical Run ORION5SSA-2_090824B 08/24/09 1501 Batch 090824_2_PH-W_555A-2 Run 0R10N555A-2_090824B 08/24/09 1554 0.1 10 Batch R122875 08/25/09 1053 08/25/09 1055 08/25/09 1208 08/25/09 1210 20 i_S04-TURB-W 09/10/09 1208 09/10/09 1213 09/10/09 1234 09/10/09 1237 10 Method Blank ND mg/I 0.02 Run TECHNICON_090825A laboratory Control Sample 19.8 mg/L 0.20 99 Run TECHNICON_090825A 80 120 Sample Matrix Spike 1.95 mg/I 0.050 97 Run TECHNICON_090825A 80 120 Sample Matrix Spike Duplicate 1.92 mg/I 0.050 95 Run TECHNICON_090825A 80 120 1.6 Batch 090910_ laboratory Control Sample 4710 mg/I 150 98 Run TURB-2_09091 OA 90 110 Method Blank ND mg/I 0.6 Run TURB-2_090910A Sample Matrix Spike 114 mg/I 2.9 103 Run TURB-2_090910A 90 110 Sample Matrix Spike Duplicate 116 mg/I 2.9 106 Run TURB-2_090910A 90 110 ND Not detected at the reporting limit ENERGYLARORA TORIES INC 2393 Sail Creek Highway 8260 RO Box 3258 Caspei WY82602 Toll Free 888235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com wwwenergylab.com QA/QC Summary Report Report Date 09/15/09 Work Order C09080823 Client Denison Mines USA Corp Project 3rd Quarter Groundwater Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method Sample ID Calcium Potassium Sodium E200.7 LRB Method Blank 0.2 mg/L ND mg/L ND mg/L 0.1 0.06 0.03 Run ICP3-C_090903A Batch Ri 23322 09/03/09 1348 Sample ID Calcium Potassium Sodium LFB Laboratory Fortified Blank 48.3 mg/L 47.8 mg/L 48.8 mg/L 0.50 0.50 0.50 96 96 98 Run ICP3-C_090903A 85 115 85 115 85 115 09/03/09 1351 Sample ID Calcium Potassium Sodium C09080823-OO5BMS Sample Matrix Spike 672 mg/L 231 mg/L 421 mg/L 1.0 1.0 1.0 74 86 80 Run ICP3-C_090903A 70 130 70 130 70 130 09/03/09 1646 Sample ID Calcium Potassium Sodium C09080823-OO5BMSD Sample Matrix Spike Duplicate 659 mg/L 227 mg/L 412 mg/L 1.0 1.0 1.0 84 77 Run ICP3-C_090903A 70 130 70 130 70 130 2.1 1.6 09/03/09 1700 20 20 20 Method E200.7 Batch Ri 23403 Sample ID Magnesium LRB Method Blank 0.3 mg/L 0.03 Run ICP3-C_090904A 09/04/09 1355 Sample ID Magnesium LFB Laboratory Fortified Blank 51.7 mg/L 0.50 103 Run ICP3-C_090904A 85 115 09/04/09 1358 Sample ID Magnesium C09080823-OO3BMS Sample Matrix Spike 321 mg/L 1.0 74 Run ICP3-C_090904A 70 130 09/04/09 1704 Sample ID Magnesium C09080823-OO3BMSD Sample Matrix Spike Duplicate 297 mg/L 1.0 65 Run ICP3-C_090904A 70 130 09/04/09 1708 20 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration Spike recovery outside of advisory limits ENEROYL.4BORA TORIES INC 23613 Sail CreekHqhway 82601 P0 8ox3258 Caspa tW82602 TollFree88235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com wwwenergy/ab.com QAIQC Summary Report Report Date 09/15/09 Work Order C09080823 Al Client Denison Mines USA Corp Project 3rd Quarter Groundwater Method E200.8 Sample ID LRB Arsenic Cadmium Chromium Cobalt Copper Iron Lead Manganese Mercury Molybdenum Nickel Selenium Thallium Tin Uranium Vanadium Zinc Sample ID LFB Arsenic Cadmium Chromium Cobalt Copper Iron Lead Manganese Mercury Molybdenum Nickel Selenium Thallium Tin Uranium Vanadium Zinc Method Blank ND mgIL ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L ND mg/L ND mgIL ND mg/L ND mg/L 4E-05 mg/L ND mg/L ND mg/L ND mg/L ND mg/L 0.0002 mg/L Sample ID C09080823-OO2AMS4 Sample Matrix Spike Arsenic 0.0542 mg/L Cadmium 0.0494 mg/L Chromium 0.0502 mg/L Cobalt 0.0486 mg/L Copper 0.0492 mg/L Iron 1.28 mg/L Lead 0.0521 mg/L Qualifiers SE-OS 4E-05 4E-05 4E-05 7E-05 0.0006 2E-05 3E-05 4E-OS 0.000 6E-05 3E-05 3E-05 0.0006 3E-05 4E-O5 0.0002 ND Not detected at the reporting limit naiyte Count Result UnIts RL %REC Low Limit High Limit RPD RPDLimit Qual Batch RI 22891 Run ICPMS4-C_09O825A 08/25/09 1147 Run ICPMS4-C_090825A 08/25/09 1152 0.0010 108 85 115 0.0010 109 85 115 0.0010 108 85 115 0.0010 107 85 115 0.0010 109 85 115 0.0010 105 85 115 0.0010 108 85 115 0.0010 110 85 115 0.0010 110 85 115 0.0010 109 85 115 0.0010 110 85 115 0.0010 110 85 115 0.0010 104 85 115 0.0010 110 85 115 0.00030 103 85 115 0.0010 108 85 115 0.0010 112 85 115 0.0010 108 Run ICPMS4-C_090825A 70 130 08/26/09 0204 0.010 99 70 130 0.050 100 70 130 0.010 95 70 130 0.010 98 70 130 0.030 102 70 130 0.050 104 70 130 ii Laboratory Fortified Blank 0.0541 mg/L 0.0547 mg/L 0.0538 mg/L 0.0536 mg/L 0.0546 mg/L 1.31 mg/L 0.0539 mg/L 0.0550 mg/L 0.00552 mg/L 0.0546 mg/L 0.0548 mg/L 0.0550 mg/L 0.0520 mg/L 0.0551 mg/L 0.0514 mg/L 0.0542 mg/L 0.0561 mg/L RL Analyte reporting limit MDC Minimum detectable concentration ENERGYLASORA TORIES INC 2393 Salt Creek/1/ghway 8260 P0 Box3258 Caspei WV82602 Toll Free 888235.0515 307235.0515 Fax 307234.1839 casperenergy/aA corn wwwenergyheb.corn QAIQC Summary Report Report Date 09/15/09 Work Order C09080823 Client Denison Mines USA Corp Project 3rd Quarter Groundwater Analyte ount Result Units RL %REC Low Limit High Limit RPD RPDLImIt Qual Method E200.8 Sample ID C09080823-OO2AMS4 Manganese Mercury Molybdenum Nickel Selenium Thallium Tin Uranium Vanadium Zinc Sample Matrix Spike 0.0486 mgIL 0.00506 mg/L 0.0539 mg/L 0.0500 mg/L 0.195 mg/L 0.0519 mg/L 0.0512 mg/L 0.102 mg/L 0.0527 mg/L 0.0504 mg/L 0010 0.0010 0.0010 0.050 0.0010 0.0010 0.0010 0.00030 0.0010 0.010 94 101 107 98 104 104 102 114 103 95 Run ICPMS4-C_090825A 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 Batch Ri 22891 08/26/09 0204 Sample ID C09080823-OO2AMSD Arsenic Cadmium Chromium Cobalt Copper Iron Lead Manganese Mercury Molybdenum Nickel Selenium Thallium Tin Uranium Vanadium Zinc Sample Matrix Spike Duplicate 0.0554 mg/L 0.0495 mg/L 0.0517 mg/L 0.0500 mg/L 0.0500 mg/L 1.33 mg/L 0.0528 mg/L 0.0515 mg/L 0.00538 mg/L 0.0539 mg/L 0.0513 mg/L 0.203 mg/L 0.0526 mg/L 0.0518 mg/L 0.103 mg/L 0.0536 mg/L 0.0503 mg/L 0.0010 0.010 0.050 0.010 0.010 0.030 0.050 0.010 0.0010 0.0010 0.050 0.0010 0.0010 0.0010 0.00030 0.0010 0.010 110 99 103 98 100 106 106 100 108 107 101 121 105 104 117 105 95 Run ICPMS4-c_090825A 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 2.2 0.2 2.8 1.6 3.9 1.3 5.7 6.1 2.6 4.2 1.2 1.2 1.7 1.8 0.1 08/26/09 0209 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 Method E200.8 Batch R122952 Sample ID LRB Beryllium Silver Method Blank ND mg/L 8E-05 mg/L 6E-05 4E-05 Run ICPMS4-C_090826B 08/26/09 2118 Sample ID LFB Beryllium Silver Laboratory Fortified Blank 0.0540 mg/L 0.0216 mg/L 0.010 0.0010 108 107 Run ICPMS4-C_090826B 85 115 85 115 08/26/092123 Sample ID C09080903-OOIBMS4 Beryllium Silver Sample Matrix Spike 0.492 mg/L 0.191 mg/L 0.010 0.010 98 96 Run ICPMS4-C_090826B 70 130 70 130 08/27/09 0826 Sample ID C09080903-OOIBMSD Beryllium Silver Sample Matrix Spike Duplicate 0.492 mg/L 0.211 mg/L 0.010 0.010 98 106 Run ICPMS4-C_090826B 70 130 70 130 0.1 9.9 08/27/09 0831 20 20 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration ENERO YLABORA TORIES INC 2393 SaN Creek Hibway 82601 RO Sox 3258 Caspe WV82602 Toll Free 888235.0515 307235.0515 Fai 307234.1639 caspenWenergy/ab.com invw.energy/ab.com QAIQC Summary Report Client Denison Mines USA Corp Project 3rd Quarter Groundwater Report Date Work Order 09/15/09 C09080823 Anaiyte Count Result Units RL %REC Low Limit High Limit RPD RPDLim1t Quaj Method E353.2 Batch R122994 Sample ID MBLK-1 Method Blank Nitrogen NitrateNitrite as ND mg/I 0.03 Run TECHNICON_090827A 08/27/09 1412 Sample ID LCS-2 Laboratory Control Sample Nitrogen NitrateNitrite as 2.57 mg/I 0.10 103 Run TECHNICON_090827A 90 110 08/27/09 1414 Sample ID C09080823-0O6DMS Sample Matrix Spike Nitrogen NitrateNitrite as 2.12 mg/I 0.10 106 Run TECHNICON_090827A 90 110 08/27/09 1625 Sample ID C09080823M05DMSD Sample Matrix Spike Duplicate Nitrogen NitrateNitrite as 2.12 mg/I 0.10 106 Run TECHNICON_090827A 90 110 08/27/09 1627 10 Method E900.1 Sample ID MB-GA-0261 Method Blank Gross Alpha minus Rn 0.7 pCi/L Gross Alpha minus Rn Precision 0.4 pCi/I Gross Alpha minus Rn MDC 0.5 pCi/I Run G5000W_090831A Batch GA-0261 09/02/09 1658 Sample ID LCS-GA-0261 Laboratory Control Sample Gross Alpha minus Rn 29.4pCi/L 109 Run GS000W_090831A 70 130 09/02/09 1658 Sample ID C09080823-OOICMS Sample Matrix Spike Gross Alpha minus Rn 25.3pCi/L 89 Run G5000W_090831A 70 130 09/02/09 1658 Sample ID C09080823-OOICMSD Sample Matrix Spike Duplicate Gross Alpha minus Rn 27.3pCi/L 96 Run G5000W_090831A 70 130 79 09/02/09 1658 24.5 Qualifiers RI Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration QA/QC Summary Report Method $W8260B Sample ID 28-Aug-09_LCS Benzene Carbon tetrachioride Chloroform Chloromethane mp-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes Total Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 jfi Laboratory Control Sample 9.8 ug/L 9.8 ug/L 10 ug/L 9.2 ug/L 19 ug/L 92 ug/L 12 ug/L 4.8 ug/L 10 ug/L 10 ugh 30 ug/L Sample ID 28-Aug-09_MBLK_6 jj Method Blank Benzene Carbon tetrachloride Chloroform Chloromethane mp-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes Total Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 Benzene Carbon tetrachloride Chloroform mp-Xylenes o-Xylene Toluene Xylenes Total Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 1100 ug/L 1200 ug/L 2400 ug/L 1100 ug/L 1200 ug/L 1200 ug/L 2300 ug/L 1.0 106 70 130 1.0 113 80 120 1.0 106 80 120 1.0 105 80 120 Run GCMS2_090828A 100 110 70 130 100 119 70 130 100 111 70 130 100 108 70 130 100 122 70 130 100 118 70 130 100 115 70 130 100 119 70 130 100 109 80 120 100 104 80 120 100 105 80 120 RL Analyte reporting limit MDC Minimum detectable concentration ND Not detected at the reporting limit Spike recovery outside of advisory limits ENERGYLABORA TORIES INC 2393 Sail Creek Highway 82601 PC Box 3258 Caspe WV82602 To//Free 888235.0515 3072350515 Fa 307234.1639 casperOenergy/ab.com wwwenergylab.com Client Denison Mines USA Corp Project 3rd Quarter Groundwater Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Batch Quail R123141 Report Date 09/15/09 Work Order C09080823 Run GCMS2_090828A 08/28/09 1234 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 80 130 80 120 80 120 Run GCMS2_090828A 08/28/09 1424 1.0 98 1.0 98 1.0 104 1.0 92 1.0 96 20 92 1.0 116 1.0 4fl 1.0 105 1.0 100 1.0 99 1.0 114 1.0 110 1.0 106 1.0 104 1.0 1.0 1.0 1.0 1.0 20 ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L 1.0 ND ug/L 1.0 ND ug/L 1.0 ND ug/L 1.0 ND ug/L 1.0 Sample ID C09080823-OO3EMS ii Sample Matrix Spike 08/28/09 2232 Qualifiers ENERGYLASORA TORIES INC 2393 Sail Creek Hqhway 8260 P0 Box 3258 Caspei WY82602 Toll Free 888235.0515 307235.0515 Pc 307234.1639 casperenergy/ab.com www.energylab.comENERGY -i//1//i IV/// QAIQC Summary Report Client Denison Mines USA Corp Report Date 09/15/09 Project 3rd Quarter Groundwater Work Order C09080823 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLImIt Qual Method SW82608 Batch Ri 23141 Sample ID C09080823-OO3EMSD jj Sample Matrix Spike Duplicate Run GCMS2_090828A 08/28/09 2310 Benzene 1000 ug/L 100 105 70 130 4.5 20 Carbon tetrachloride 1200 ug/L 100 119 70 130 20 Chloroform 2500 ug/L 100 121 70 130 3.9 20 mp-Xylenes 1000 ug/L 100 104 70 130 3.8 20 o-Xylene 1200 ug/L 100 117 70 130 20 Toluene 1200 ug/L 100 119 70 130 1.4 20 Xylenes Total 2200 ug/L 100 111 70 130 3.9 20 Surr Dibromofluoromethane 100 128 70 130 10 Surr p-Bromofluorobenzene 100 112 80 120 10 Surr Toluene-d8 100 107 80 120 10 Surr 12-Dichlorobenzene-d4 100 107 80 120 10 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration Co m p a n y Na m Mi S o 4 ft g 5 dd r e s s Re P o r t Ma i l A cy A f f In v o i c e Ad d r e s s 5f A 4 - Pr o j e c t a m e PW S Pe r m i t Et c Sa m p l e Or i g i n EP A / S t at e Co m p l i a n c e 2c 4 r a e a4 1 AJ a 4 r St a t e Ye s No Co n t a c t Na m e S Ph o n e / F a x Em a i l Sa m p l e r Pl e a s e Pr i n t J2 In en 1 1f l A k 2 In v o i c e Co n t a c t Ph o n e Pu r c h a s e Or d e r bu o t e / B o t t l e Or d e r Co n t a c t E L I pr i o r to Sh i p p e d by RU S H sa m p l e su b m i t t a l uP 5 co o l e r fo r ch a r g e s an d ID s ra 9 I j sc h e d u l i n g S e e I5 q In s t r u c t i o n Pa g e ar Co m m e n t s Re c e l cc ac t Cu On i c e l8 o cu s t o d y se a l cn s c t t l e C/ On C o o l e r Cu In t a c t CN MA T R I X Sig n a t u r e Ma t c h -o I- t 4- w _I I I I I I I I I i i p- fo U J js Sp e c i a l R e p o r t / F o r m a t s DW ED D / E D T E l e c t r o n i c Da t a LI PO T W I W W T P Fo r m a t LS t a t e LL E V E L I V LI Ot h e r SA M P L E ID E N T I F I C A T I O N Co l l e c t i o n C o l l e c t i o n Na m e Lo c a t i o n In t e r v a l et c Da t e Ti m e iy SI D 9 L C 2m Y/ f 1 / 2 7 y1 j a4 ri g - o g i g w 4y v co j3 g Z 5r t i j I1 . O 13 I Q t 64 f l t W t 10 fle d by pn 4 Da t e f f i m e re Cu s t o d y rn k s c $o - o T Re c o r d Re l i n q u i t e d by pr i n t Da t e i li m e MU S T be Si g n e d Sa m i N e Dis p o s a l Re t u r n to Cli e n t Dis p o s a l __ _ _ Re c e i v e d by pn n t ba t e / T i m e Sig n a t u r e TR e c e i v e d by pr i n t Da t e / l i m e Sig n a t u r e jq p aig n a t u r e Da t e / V In ce r t a i n ci r c u m s t a n c e s sa m p l e s su b m i t t e d to En e r g y La b o r a t o r i e s I n c ma y be su b c o n t r a c t e d to ot h e r ce r t i f i e d la b o r a t o r i e s in or d e r to co m p l e t e th e an a l y s i s re q u e s t e d Th i s se r v e s a s no t i c e of th i s po s s i b i l i t y All su b - c o n t r a c t da t a wil l be cl e a r l y no t a t e d on yo u r an a l y t i c a l r e p o r t Vis i t ou r we b si t e at ww w . e n e r p y l a b . c o m fo r ad d i t i o n a l in f o r m a t i o n do w n l o a d a b l e fe e sc h e d u l e fo r m s an d li n k s EI \ E R G Y LA B O R / I TO R I Ch a i n of Cu s t o d y an d An a l y t i c a l Re q u e s t Re c o r d Pa g e of PL E A S E PR I N T Pr o v i d e as mu c h In f o r m a t i o n as nn c c i h i a Energy Laboratories Inc VVo rkord Receipt Checklist Denison Mines USA Corp C09080823 Login completed by Kimberly Humiston Date and Time Received 8/21/2009 915 AM Reviewed by Received by ha Reviewed Date Carrier name Next Day Air Shipping container/cooler in good condition Yes No Not Present Custody seals intact on shipping container/cooler Yes No Not Present Custody seals intact on sample bottles Yes No Not Present Chain of custody present Yes No chain of custody signed when relinquished and received Yes No Chain of custody agrees with sample labels Yes No Samples in proper container/bottle Yes No Sample containers intact Yes No Sufficient sample volume for indicated test Yes No All samples received within holding time Yes No container/Temp Blank temperature 3C On Ice Water VOA vials have zero headspace Yes No No VOA vials submitted Water pH acceptable upon receipt Yes No Not Applicable contact and Corrective Action comments None ENERG VLABORA TORIES INC 2393 Sail CreekHibway 8260 P0 Box 3258 Caspez WV82602 Toil Free 888235.0515 3072350515 Fax 307234.1639 caspereney/ab.coin vww.energy/ab.corn Denison Mines USA Corp Date 15-Sep-09CLIENT Project Sample Delivery Group C09080823 ORIGINAL SAMPLE SUBMITTALS All original sample submittals have been returned with the data package SAMPLE TEMPERATURE COMPLIANCE 4C 2C Temperature of samples received may not be considered properly preserved by accepted standards Samples that are hand delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun GROSS ALPHA ANALYSIS Method 900.0 for gross alpha and gross beta is intended as drinking water method for low TDS waters Data provided by this method for non potable waters should be viewed as inconsistent RADON IN AIR ANALYSIS The desired exposure time is 48 hours days The time delay in returning the canister to the laboratory for processing should be as short as possible to avoid excessive decay Maximum recommended delay between end of exposure to beginning of counting should not exceed days SOIL/SOLID SAMPLES All samples reported on an as received basis unless otherwise indicated ATRAZINE SIMAZINE AND PCB ANALYSIS Data for PCBs Atrazine and Simazine are reported from EPA 525.2 PCB data reported by ELI reflects the results for seven individual Aroclors When the results for all seven are ND not detected the sample meets EPA compliance criteria for PCB monitoring SUBCONTRACTING ANALYSIS Subcontracting of sample analyses to an outside laboratory may be required If so ENERGY LABORATORIES will utilize its branch laboratories or qualified contract laboratories for this service Any such laboratories will be indicated within the Laboratory Analytical Report BRANCH LABORATORY LOCATIONS eli-b Energy Laboratories Inc Billings MT eli-g Energy Laboratories Inc Gillette WY eli-h Energy Laboratories Inc Helena MT eli-r Energy Laboratories Inc Rapid City SD eli-t Energy Laboratories Inc College Station TX CERTIFICATIONS USEPA WY00002 Radiochemical WY00937 FL-DOH NELAC E87641 Radiochemical E871017 California 02118CA Oregon WY200001 Utah 3072350515 Virginia 00057 Washington C1903 ISO 17025 DISCLAIMER The results of this Analytical Report relate only to the items submitted for analysis ENERGY LABORATORIES INC CASPERWY certifies that certain method selections contained in this report meet requirements as set forth by the above accrediting authorities Some results requested by the client may not be covered under these certifications All analysis data to be submitted for regulatory enforcement should be certified in the sample state of origin Please verify ELIs certification coverage by visiting www.energylab.com ELI appreciates the opportunity to provide you with this analytical service For additional information and services visit our web page www.energylab.com 3rd Quarter Groundwater CASE NARRATIVE THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 82601 P0 Box 3258 CaspeG WY82602 To//Free 888.235.0515 307235.0515 Far 307234.1639 caspenenergylab.com www.energylab.com ANALYTICAL SUMMARY REPORT EPSERGY LAI3O/A TORIES September 18 2009 Denison Mines USA Corp 6425 Hwy 191 Blanding UT 84511 Workorder No C09081 027 Project Name 3rd Quarter Groundwater Quote ID C1640 POC Wells Monthly Groundwater Sampling Energy Laboratories Inc received the following 11 samples for Denison Mines USA Corp on 8/27/2009 for analysis Sample ID Client Sample ID C09081027-001 MW1 C09081 027-002 MW Collect Date Receive Date 082509 1336 08/27/09 08/25/09 1557 08/27/09 Matrix Aqueous Aqueous If you have any questions regarding these tests results please call Report Approved By aLt Steven Cariston Technical Director Test Metals by ICPICPMS Dissolved Metals by ICPICPMS Dissolved Fluoride C09081 027-003 MW 18 08/25/09 1127 08/27/09 Aqueous Metals by ICPICPMS Dissolved C09081027-004 MW 19 08/25/09 0912 08/27/09 Aqueous Metals by ICPICPMS Dissolved Fluoride Nitrogen Nitrate Nitrite C09081027-005 MW 24 08/24/09 0738 08/27/09 Aqueous Metals by ICPICPMS Dissolved Alkalinity QA Calculations Chloride Fluoride Nitrogen Ammonia Nitrogen Nitrate Nitrite pH Gross Alpha minus Rn222 and Uranium Solids Total Dissolved Sulfate 5W8260B VOC5 Standard List C09081027-006 MW 25 08/24/09 1637 08/27/09 Aqueous Sanie As Above C09081 027-007 MW 29 08/24/09 1206 08/27/09 Aqueous Same As Above C09081 027-008 MW 30 08/24/09 1017 08/27/09 Aqueous Same As Above C09081027-009 MW 31 08/24/09 1422 08/27/09 Aqueous Same As Above C09081027-010 Trip Blank 08/24/09 1422 08/27/09 Aqueous SW8260B VOC5 Standard List C09081027-01 Temp Blank 08/25/09 0000 08/27/09 Aqueous Temperature As appropriate any exceptions or problems with the analyses are noted in the Laboratory Analytical Report the QA/QC Summary Report or the Case Narrative EN5RGY LABORA TOf/LI5 ENERGYLASORA TORIES INC 2393 Sail Creek Hiqbway 82601 P0 Box 3258W Casper WV82602 Toil Free 88235.0515 307235.0515 Fax 307234.1639 casperenergy/ai.zcom wwwenergylab.com QAIQC Summary Report Client Denison Mines USA Corp Report Date 09/18/09 Project 3rd Quarter Groundwater Work Order C09081027 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimIt Quai Method A2320 Sample ID MBLK Alkalinity Total as CaCO3 Carbonate as C03 Bicarbonate as HCO3 Method Blank mgJL ND mg/L mgIL 0.2 Batch Ri 23255 Run MANTECH_090902B 09102109 1520 Sample ID LCSI Alkalinity Total as CaCO3 Laboratory Control Sample 204 mg/L 5.0 100 Run MANTECH_090902B 09/02/09 1535 90 110 Sample ID LCS Alkalinity Total as CaCO3 Laboratory Control Sample 56.4mg/L 5.0 104 Run MANTECH_090902B 09/02/09 1542 90 110 Sample ID C09081029-OO2AMS Alkalinity Total as CaCO3 Sample Matrix Spike 325 mg/L 5.0 101 Run MANTECH_090902B 09/02/09 1612 80 120 Sample ID C09081029-OOZAMSD Alkalinity Total as CaCO3 Sample Matrix Spike Duplicate 332 mg/L 5.0 107 Run MANTECH_090902B 09/02/09 1621 80 120 2.3 20 Method A2540 Sample ID MBLKI_090828 Solids Total Dissolved TDS 180 Method Blank ND mg/L Batch 090828_2_SLDS-TDS-W Run BAL-1_090828B 08/28/09 1353 Sample ID LCSI_090828 Solids Total Dissolved TDS 180 Laboratory Control Sample 1010 mg/L 10 101 Run BAL-1_090828B 08/28/09 1353 90 110 Sample ID C09081021-OO8AMS Solids Total Dissolved TDS 180 Sample Matrix Spike 2040 mgIL 10 104 Run BAL-1_090828B 08/28/09 1638 90 110 Sample ID C09081021-OO8AMSD Solids Total Dissolved TDS 180 Sample Matrix Spike Duplicate 2070 mg/L 10 106 Run BAL-1_090828B 08/28/09 1638 90 110 1.7 10 Method A4500-Cl Sample ID MBLK9-090911A Chloride Method Blank ND mg/L 0.4 Batch 09091 IA-CL-TTR-W Run TITRATION_090911A 09/11/09 1354 Sample ID C09081064-OO4AMS Chloride Sample Matrix Spike 80.2mg/L 1.0 98 Run TITRATION_09091 IA 09/11/09 1429 90 110 Sample ID C09081064-OO4AMSD Chloride Sample Matrix Spike Duplicate 80.5mg/L 1.0 99 Run TITRATION_090911A 09/11/09 1430 90 110 0.4 10 Sample ID LCS35-090911A Chloride Laboratory Control Sample 3500 mg/L 1.0 99 Run TITRATION_09091 IA 09/11/09 1448 90 110 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration Client Denison Mines USA Corp Project 3rd Quarter Groundwater Analyte Method A4500-F Sample ID MBLK Fluoride Sample ID LCS Fluoride Sample ID C09081027-OO7AMS Fluoride Sample ID C09081027-OO7AMSD Fluoride Method A4500-H Sample ID ICVI_090828_2 pH Method A4500-H Sample ID C09081027-OO5ADUP pH Method A4500-NH3 Sample ID LCS-2 Nitrogen Ammonia as Sample ID MBLK-17 Nitrogen Ammonia as Sample ID C09080954-OO9DMS Nitrogen Ammonia as Sample ID C09080954-OO9DMSD Nitrogen Ammonia as Method A4500-S04 Sample ID LCS-1090911 Sulfate Sample ID MBLK-1_090911 Sulfate Sample ID C09081027-OO8AMS Sulfate Sample ID C09081027-OO8AMSD Sulfate Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration EN5RGY LA/JO/ill TOP/ES ENERGYLABORA TORIES INC 2393 Sail Creek Hiqbway 8260 P0 Box 3258W Caspec WV82602 Toll Free 888.2350515 307235 0515 Fax 307.234 .1639 casperenergy/ab.com wwwenergylab.com QAIQC Summary Report Count Result Units Method Blank ND mg/L Laboratory Control Sample .O2mg/L Sample Matrix Spike .78mg/L Sample Matrix Spike Duplicate .78mg/L Initial Calibration 6.9 Verification s.u Standard 0.010 101 98 102 Sample Duplicate 6.6 s.u 0.010 Report Date 09/18/09 Work Order C09081 027 RL %REC Low Limit High Limit RPD RPDLimIt Qual Batch R123317 Run MANTECH_090903B 09/03/09 1332 0.05 Run MANTECH_090903B 09/03/09 1334 0.10 102 90 110 Run MANTECH_090903B 09/03/09 1838 0.10 101 80 120 Run MANTECH_090903B 09/03/09 1841 0.10 101 80 120 10 Analytical Run ORION555A-2_090828B 08/28/09 1312 Batch 090828_2_PH-W_555A-2 Run 0R10N555A-2_090828B 08/28/09 1342 Batch R123503 09/09/09 1414 09/09109 1444 09/09/09 1456 09/09/09 1458 1.1 20 Batch 09091 1_1_S04-TURB-W 09/11/09 1050 09/11/09 1050 09/11/09 1104 09/11/09 1104 10 Laboratory Control Sample 19.7mg/L 0.20 98 Run TECHNICON_090909B 80 120 Method Blank 0.O4mg/L 0.02 Run TECHNICON_090909B Sample Matrix Spike 1.78mg/L 0.050 89 Run TECHNICON_090909B 80 120 Sample Matrix Spike Duplicate 1.8Omg/L 0.050 90 Run TECHNICON_090909B 80 120 Laboratory Control Sample 5050 mg/L 59 105 Run TURB-2_09091 1A 90 110 Method Blank ND mg/L 0.8 Run TURB-2_09091 1A Sample Matrix Spike 1820 mg/L 30 108 Run TURB-2_09091 1A 90 110 Sample Matrix Spike Duplicate 1800 mg/L 30 106 Run TURB-2_09091 1A 90 110 1.3 ND Not detected at the reporting limit QAIQC Summary Report Method E200.7 Sample ID MB-090911A Calcium Magnesium Potassium Sodium Method Blank ND ND ND ND Sample ID C09090190-OOIBMS2 Sample Matrix Spike Calcium 100 mg/L Magnesium 99.6mg/L Potassium 95.1 mg/L Sodium 271 mg/L Run ICP2-C_09091 1A 95 85 115 96 85 115 69 85 115 90 85 115 Run ICP2-C_09091 1A 1.0 97 70 130 1.0 98 70 130 1.0 93 70 130 1.0 107 70 130 Sample ID C09090190-OOIBMSD Sample Matrix Spike Duplicate Calcium 101 mg/L Magnesium 99.8mg/L Potassium 96.7mg/L Sodium 268 mg/L Run ICP2-C_090911A 1.0 98 70 130 1.0 98 70 130 1.0 94 70 130 1.0 104 70 130 09/11/09 1758 0.8 20 0.1 20 1.6 20 20 Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration E/ERGY LABORA TORIES ENERG YLAHORA TORIES INC 2393 Sail Creek Hiqbway 82601 P0 Box 3258 Caspe4c WY82602 Toil Free 888.235 0515 307.235.0515 Fax 307.234.1639 casperenergy/ab.coin-www energy/a5 corn Client Denison Mines USA Corp Project 3rd Quarter Groundwater Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Report Date 09/18/09 Work Order C09081027 mg/L mg/L mg/L mg/L Run ICP2-C_09091 1A Sample ID LFB-090911A Calcium Magnesium Potassium Sodium 0.2 0.09 0.1 0.2 0.50 0.50 0.50 0.50 Laboratory Fortified Blank 47.3mg/L 48.lmg/L 44.4mgIL 45.lmg/L Batch Ri 23626 09/11/09 1443 09/11/09 1447 09/11/09 1754 ND Not detected at the reporting limit ENERO VLABORA TORIES INC 2393 Sail Creek Hiqhway 82601 P0 Box 3258 Casper WV82602 Toil Free 889235.0515 307235.0515 Fax 307234.1639 casperenergy/at.com wwwenergylab.comEIERGY LADORA TORIES QAIQC Summary Report Client Denison Mines USA Corp Report Date 09/18/09 Project 3rd Quarter Groundwater Work Order C09081027 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLImIt Qual Method E200.8 Batch R123080 Sample ID LRB Method Blank Manganese ND mg/L Selenium 4E-05 mgIL Thallium ND mg/L Uranium ND mg/L 3E-05 3E-05 3E-05 3E-05 Run ICPMS4-090828A 08/28/09 1118 Sample ID LFB Laboratory Fortified Blank Manganese 0.0533 mg/L Selenium 0.0537 mg/L Thallium 0.0546 mg/L Uranium 0.0536 mg/L 0.0010 0.0010 0.0010 0.00030 106 107 109 107 Run ICPMS4-C_090828A 85 115 85 115 85 115 85 115 08/28/09 1123 Sample ID C09081027-OO9BMS4 Sample Matrix Spike Manganese 0.0525 mg/L Selenium 0.113 mg/L Thallium 0.0550 mg/L Uranium 0.0611 mg/L 0.010 0.0010 0.10 0.00030 104 111 110 108 Run ICPMS4-C_090828A 70 130 70 130 70 130 70 130 08/28/09 2104 Sample ID C09081 027-OO9BMSD Sample Matrix Spike Duplicate Manganese 0.0519 mg/L Selenium 0.113 mg/L Thallium 0.0542 mg/L Uranium 0.0606 mg/L 0.010 0.0010 0.10 0.00030 103 109 108 107 Run ICPMS4-C_090828A 70 130 70 130 70 130 70 130 1.1 0.5 0.8 08/28/09 2109 20 20 20 20 Method E353.2 Batch R123308 Sample ID MBLK-1 Nitrogen NitrateNitrite as Method Blank ND mg/L 0.03 Run TECHNICON_090903A 09/03/09 1059 Sample ID LCS-2 Nitrogen NitrateNitrite as Laboratory Control Sample 2.62mg/L 0.10 105 Run TECHNICON_090903A 90 110 09/03/09 1102 Sample ID C09090166-OO2DMS Nitrogen NitrateNitrite as Sample Matrix Spike 2.O6mg/L 0.10 101 Run TECHNICON_090903A 90 110 09/03/09 1234 Sample ID C09090166-OO2DMSD Nitrogen NitrateNitrite as Sample Matrix Spike Duplicate 2.O7mg/L 0.10 101 Run TECHNICON_090903A 90 110 0.5 09/03/09 1237 10 Sample ID C09090075-OO4DMS Nitrogen NitrateNitrite as Sample Matrix Spike 2.l6mg/L 0.10 106 Run TECRNICON090903A 90 110 09/03/09 1312 Sample ID C09090075-OO4DMSD Nitrogen NitrateNitriteasN Sample Matrix Spike Duplicate 2.15mg/I 0.10 105 Run TECHNICON_090903A 90 110 0.5 09/03/09 1314 10 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration Client Denison Mines USA Corp Project 3rd Quarter Groundwater rAnalyte Count Result Units Method E900.1 Sample ID MB-GA-0263 Method Blank Gross Alpha minus Rn Gross Alpha minus Rn Precision Gross Alpha minus Rn MDC Sample ID LCS-GA-0263 Gross Alpha minus Rn Sample ID C09080762-OO3CMS Gross Alpha minus Rn Sample ID C09080762-OO3CMSD Gross Alpha minus Rn Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration Run TENNELEC-3_09091 70 130 Run TENNELEC-3_09091 IF 70 130 Run TENNELEC-3_09091 70 130 EfERGV LABORATORIES ENERGYLABORA TORIES INC 2393 Sail Creek Hlqhway 82601 P0 Box 3258 Casper WY82502 Toil Free 888.285 0515 807285.0515 Fax 307234.1639 casperenergy/ab.com vwwenergy/ab.com QAIQC Summary Report Report Date 09/18/09 Work Order C09081027 RL %REC Low Limit High Limit RPD RPDLimit Qua Batch GA-0263 Run TENNELEC-3_090911F 09/16/09 1732 0.4 pCi/L 0.3 pCi/L 0.4 pCi/L Laboratory Control Sample 27.1 pCi/L Sample Matrix Spike 28.7 pCi/L Sample Matrix Spike Duplicate 29.4 pCi/L 101 102 105 09/16/09 1732 09/16/09 1732 09/16/09 1732 2.2 21.8 ND Not detected at the reporting limit Not detected at minimum detectable concentration QA/QC Summary Report Method SW8260B Sample ID 31-Aug-09_LCS_3 Acetone Benzene Carbon tetrachioride Chloroform Chloromethane mp-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xyiene Toluene Xylenes Total Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane mp-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes Total Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 Benzene Carbon tetrachloride Chloroform Chioromethane mp-Xylenes Methyl ethyl ketone Methylene chloride Qualifiers 10 ug/L 8.3 ugh 20 ugIL 100 ug/L 9.6 ugIL 12 ug/L 11 ug/L 11 ug/L 31 ugh 220 ug/L 220 ug/L 210 ug/L 160 ug/L 400 ug/L 1800 ug/L 190 ug/L 1.0 100 1.0 83 1.0 101 20 104 1.0 96 1.0 118 1.0 105 1.0 106 1.0 103 1.0 93 1.0 100 1.0 98 1.0 94 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 70 130 80 130 80 120 80 120 1.0 99 70 130 1.0 96 80 120 1.0 97 80 120 1.0 104 80 120 Run 5975V0C1_090831A 96 70 130 109 70 130 112 70 130 103 70 130 82 70 130 99 70 130 92 70 130 96 70 130 EPERGY LASORA TORIES ENERG VLABORA TORIES INC 2393 Se/I Creek t/ibway 82801 P0 Box 3258 Casper WY82602 roll Free 888.235 0515 307.235.0515 Fax 307.234 1639 caspenllenergy/ab.corn wwwenergy/atxcom Client Denison Mines USA Corp Project 3rd Quarter Groundwater Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Batch RI 231 98 Report Date 09/I 8/09 Work Order C09081027 if Laboratory Control Sample Run 5975V0C1_090831A 110 ug/L 20 105 70 130 11 ug/L 1.0 113 70 130 10 ug/L 1.0 104 70 130 08/31109 1211 Sample ID 31-Aug-09_MBLK_6 if Method Blank Run 5975V0C1 090831A 08/31/09 1358 ND ug/L 20 ND ug/L 1.0 ND ug/L 1.0 ND ug/L 1.0 ND ug/L 1.0 ND ug/L 1.0 ND ug/L 20 ND ug/L 1.0 ND ug/L 1.0 ND ug/L 1.0 ND ugfL 1.0 ND ug/L 1.0 Sample ID C09081027-OO5EMS jfi Sample Matrix Spike Acetone 1900 ug/L 400 20 20 20 20 20 400 20 08/31/09 1933 RL Analyte reporting limit MDC Minimum detectable concentration ND Not detected at the reporting limit QAIQC Summary Report Acetone Benzene Carbon tetrachloride Chloroform Chioromethane mp-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes Total Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 Run 5975V0C1_090831A 20 107 70 130 20 103 70 130 20 105 70 130 20 101 70 130 20 101 70 130 20 104 80 120 20 102 80 120 20 98 80 120 103 70 130 112 70 130 108 70 130 102 70 130 85 70 130 99 70 130 102 70 130 98 70 130 121 70 130 102 70 130 104 70 130 100 70 130 98 70 130 99 80 120 98 80 120 94 80 120 2.9 20 3.6 20 0.4 20 3.4 20 0.6 20 10 20 1.7 20 13 20 0.8 20 0.4 20 0.7 20 10 10 10 10 Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration EtERGV LA 130//A TORIES ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 82601 P0 Box 3258w Caspec WY82602 Toll Free 888.235 0515 307235 0515 Fax 307234.1639 casperenergylab.corn-wwwenergy/aA corn Client Denison Mines USA Corp Project 3rd Quarter Groundwater Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Batch R123198 Report Date 09/18109 Work Order C09081027 Method SW8260B Sample ID C09081027-OO5EMS Sample Matrix Spike Naphthalene 210 ug/L o-Xylene 210 ug/L Toluene 210 ug/L Xylenes Total 600 ugh Surr Dibromofluoromethane Sum p-Bromofluorobenzene Surr Toluene-d8 Surr 2-Dichlorobenzene-d4 Sample ID C09081027-OO5EMSD Sample Matrix Spike Duplicate 08/31/09 1933 08/31/09 2009Run5975V0C1_090831A 2100 ug/L 400 220 ug/L 20 220 ug/L 20 200 ug/L 20 170 ug/L 20 400 ug/L 20 2000 ug/L 400 200 ug/L 20 240 ug/L 20 200 ug/L 20 210 ug/L 20 600 ug/L 20 20 20 20 20 ND Not detected at the reporting limit Co m p a n y Na m e YY U I S Pr o j e c t N a m e PW S Pe r m i t Et c Qr i a i r r t 1s r n a i - bt l a r e t Sa m p l e Or i g i n St a t e EP A / S t a t e Co m p l i a n c e Ye s No Re p o r t Ma i l Ad d r s- o f wM ft c / f In v o i c e Ad d r e s s SV C Co n t a c t Na m e Ph o n e / F a x Em a i l i2 Q4 7Z ZZ ln v o i c Co n t a c t Ph o n e Pu r c h a s e Or d e r Sa m p l e r Pl e a s e Pr i n t ih i / i Qu o t e / B o t t l e Or d Sp e c i a l R e p o r t l F o r m a t s EL I mu s t be no t i f i e d Co n t a c t EL I pi l o r to 51 by pr i o r t o sa m p l e su b m i t t a l fo r th e fo l l o w i n g RU S H sa m p l e su b m i t t a l UP S 43 tA C l fo r ch a r g e s an d co o l e r ID e p fl . C sc h e d u l i n g - S e e jt 0 5 In s t r u c U o n Pa Cf l Iv ge Co m m e n t s Re c e l p t t q t n p DD W DA 2 L A DC GS A ED D / E D T E l e c t r o n i c Da t a Co Fo r m a t _ _ _ _ _ _ Ot t 5 3 DS t a t e DL E V E L I V cu s t y a i N Ot h e r NE L A C Bo t t l e s 10 co o l e r s in t a c t SA M P L E ID E N T I F I C A T I O N Co l l e c t i o n C o l l e c t i o n MA T R I X Sig n a t u r e Na m e Lo c a t i o n In t e r v a l et c Da t e Ti m e Ma t c h L4 i . i J tz c - o IS b /1 A 3m w l5 nc - a g pi 4Y 1 4 V J 1 1 k2 s - o 1 O7 I 2 3- u U ZL O T 07 3 5 -t . Q S- z o y iD A 4- t . J 8n t t 3 O so f mi q vM w 3 rz H / t i- -s ic 10 T ig 2A -z I Da t e / T i m e fl R e i i e d W p n h i V oa T h f l i Sig n a t u r e Re h n q u i f l y pn Cu s t o d y Re c o r d Re l i n q u i s h e d bj pr i i t Da t e / T i n e MU S T be 11 s i g n a t u Re c e i v e d b y ps i r i t Da t e / T i m e Sig n a t u r e Da t e / T i m e Si g n e d Sa m p l e Dis p o s a l Re t u r n to c l i e n t La b Dis p o s a l Re c e i v e d by La b o r a t o r y ci a su a r e j KI J \ . A In ce r t a i n ci r c u m s t a n c e s sa m p l e s su b m i t t e d to En e r g y La b o r a t o r i e s In c ma y be su b c o n t r a c t e d to ot h e r ce r t i f i e d la b o r a t o r i e s in or d e r to co m p l e t e th e an a l y s i s re q u e s t e d Th i s se r v e s a s no t i c e of th i s po s s i b i l i t y All su b - c o n t r a c t d a t a wil l be cl e a r l y no t a t e d on yo u r an a l y t i c a l r e p o r t Vis i t ou r we b si t e at ww w . e n e r p y l a b . c o m fo r ad d i t i o n a l in f o r m a t i o n do w n l o a d a b l e fe e sc h e d u l e fo r m s an d li n k s Ch a i n of Cu s t o d y an d An a l y t i c a l Re q u e s t Re c o r d PL E A S E PR I N T - Pr o v i d e a s mu c h in f n r m t h i n n ac nn c c l h l n Pa g e Lo f Energy Laboratories Inc Ifo rko rile Receipt Check list ui 010 Denison Mines USA Corp C09081 027 Login completed by Kimberly Humiston Date and Time Received 8/27/2009 920 AM Reviewed by Received by ha Reviewed Date Carrier name Next Day Air Shipping container/cooler in good condition Yes No Not Present custody seals intact on shipping container/cooler Yes No LI Not Present custody seals intact on sample bottles Yes No Not Present chain of custody present Yes No chain of custody signed when relinquished and received Yes No chain of custody agrees with sample labels Yes No fl Samples in proper container/bottle Yes No fl Sample containers intact Yes No Sufficient sample volume for indicated test Yes No All samples received within holding time Yes No container/Temp Blank temperature 2t On Ice Water VOA vials have zero headspace Yes No No VOA vials submitted Water pH acceptable upon receipt Yes No LI Not Applicable contact and corrective Action comments None ENERGYLABORA TORIES INC 2393 Sail Creek H/iway 82601 P0 Box 3258 Caspei WY82602 To/I Free 888235 0515 307235.0515 Fax 307.234.1639 caspefl/Ienergy/ab.com www.energylab.comENERGY LABOIiA TOf/E5 CLIENT Denison Mines USA Corp Date 18-Sep-09 Project 3rd Quarter Groundwater CASE NARRATIVE Sample Delivery Group C09081027 ORIGINAL SAMPLE SUBMITTALS All original sample submittals have been returned with the data package SAMPLE TEMPERATURE COMPLIANCE 4C 2C Temperature of samples received may not be considered properly preserved by accepted standards Samples that are hand delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun GROSS ALPHA ANALYSIS Method 900.0 for gross alpha and gross beta is intended as drinking water method for low TDS waters Data provided by this method for non potable waters should be viewed as inconsistent RADON IN AIR ANALYSIS The desired exposure time is 48 hours days The time delay in returning the canister to the laboratory for processing should be as short as possible to avoid excessive decay Maximum recommended delay between end of exposure to beginning of counting should not exceed days SOIL/SOLID SAMPLES All samples reported on an as received basis unless otherwise indicated ATRAZINE SIMAZINE AND PCB ANALYSIS Data for PCBs Atrazine and Simazine are reported from EPA 525.2 PCB data reported by ELI reflects the results for seven individual Aroclors When the results for all seven are ND not detected the sample meets EPA compliance criteria for PCB monitoring SUBCONTRACTING ANALYSIS Subcontracting of sample analyses to an outside laboratory may be required If so ENERGY LABORATORIES will utilize its branch laboratories or qualified contract laboratories for this service Any such laboratories will be indicated within the Laboratory Analytical Report BRANCH LABORATORY LOCATIONS eli-b Energy Laboratories Inc Billings MT eli-g Energy Laboratories Inc Gillette WY eli-h Energy Laboratories Inc Helena MT eli-r Energy Laboratories Inc Rapid City SD eli-t Energy Laboratories Inc College Station TX CERTIFICATIONS USEPA WY00002 Radiochemical WY00937 FL-DOH NELAC E87641 Radiochemical E871017 California 02118CA Oregon WY20000I Utah 3072350515 Virginia 00057 Washington C1903 ISO 17025 DISCLAIMER The results of this Analytical Report relate only to the items submitted for analysis ENERGY LABORATORIES INC CASPERWY certifies that certain method selections contained in this report meet requirements as set forth by the above accrediting authorities Some results requested by the client may not be covered under these certifications All analysis data to be submitted for regulatory enforcement should be certified in the sample state of origin Please verify ELIs certification coverage by visiting www.energylab.com ELI appreciates the opportunity to provide you with this analytical service For additional information and services visit our web page www.energyIab.com THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT ENERO VLASORA TORIES INC 2393 Sail Creek Hiqbway 82601 P0 Box 3258 Caspe WY82602 ______Toll Free 888.235.0515 307235.0515 Fa 307234 1639 caspenWenergylab.com wwwenergy/ab.com ANALYTICAL SUMMARY REPORT ENERGY LABOR/i JOR/FS October 02 2009 Denison Mines USA Corp 64255 Hwy 191 Blanding UT 84511 Workorder No C09090094 Project Name 3rd Quarter Groundwater Same As Above Same As Above Metals by ICP/ICPMS Dissolved Alkalinity QA Calculations Chloride Fluoride pH Gross Alpha minus Rn222 and Uranium Solids Total Dissolved Sulfate Same As Above Same As Above Same As Above 5W8260B VOCs Standard List Temperature If you have any questions regarding these tests results please call Report Approved By phMct Stephanie Waidrop Reporting Supervisor Quote ID C1640 POC Wells Monthly Groundwater Sampling Energy Laboratories Inc received the following 10 samples for Denison Mines USA Corp on 9/1/2009 for analysis Sample ID Client Sample ID Collect Date Receive Date Matrix Test C09090094-001 MW 20 08/26/09 1502 09/01/09 Aqueous Nitrogen Ammonia Nitrogen Nitrate Nitrite 5W8260B VOC5 Standard List Same As AboveC09090094-002 MW 22 C09090094-003 MW 11 C09090094-004 MW 70 C09090094-005 MW 11 08/26/09 1402 09/01/09 08/26/09 0957 09/01/09 08/26/09 1402 09/01/09 08/31/09 0951 09/01/09 Aqueous Aqueous Aqueous Aqueous C09090094-006 MW 20 08/31/09 1305 09/01/09 Aqueous C09090094-007 MW 22 06/31/09 1217 09/01/09 Aqueous C09090094-008 MW 70 06/31/09 1217 09/01/09 Aqueous C09090094-009 Trip Blank 08/26/09 1502 09/01/09 Aqueous C09090094-010 Temp Blank 08/31/09 0000 09/01/09 Aqueous As appropriate any exceptions or problems with the analyses are noted in the Laboratory Analytical Report the QNQC Summary Report or the Case Narrative Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration EPERGY ARORA TORIES Client Denison Mines USA Corp Project 3rd Quarter Groundwater ENERGYLA SORA TORIES INC 2393 Sail Creek Hiihway 82601 P0 Box 3258 Caspe WV82602 Toll Free 888.235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com www.energylab.com QAIQC Summary Report Report Date 10/02/09 Work Order C09090094 RPD RPDLImIt QualAnalyteCountResultUnitsRL%REC Low Limit High Limit Method A2320 Batch R123382 Sample ID MBLK Method Blank Run MANTECft..090904A 09/04/09 1206 Alkalinity Total as CaCO3 mg/L 0.2 Carbonate as C03 ND mg/L Bicarbonate as HCO3 mg/L Sample ID LCSI Laboratory Control Sample Run MANTECH_090904A 09/04/09 1221 Alkalinity Total as CaCO3 203 mg/L 5.0 100 90 110 Sample ID LCS Laboratory Control Sample Run MANTECH_090904A 09/04/09 1228 Alkalinity Total as CaCO3 54.0 mg/L 5.0 102 90 110 Sample ID C09081064-OO5AMS Sample Matrix Spike Run MANTECH_090904A 09/04/09 1311 Alkalinity Total as CaCO3 355 mg/L 5.0 106 80 120 Sample ID C09061064-OO5AMSD Sample Matrix Spike Duplicate Run MANTECH_090904A 09/04/09 1318 Alkalinity Total as CaCO3 351 mg/L 5.0 103 80 120 1.2 20 Method A2320 Batch R123508 Sample ID MBLK Method Blank Run MANTECH_090909A 09/09/09 1240 Alkalinity Total as CaCO3 mg/L 0.2 Carbonate as C03 ND mg/L Bicarbonate as HCO3 mg/L Sample ID LCSI Laboratory Control Sample Run MANTECH_090909A 09/09/09 1255 Alkalinity Total as CaCO3 202 mg/L 5.0 100 90 110 Sample ID LCS Laboratory Control Sample Run MANTECH090909A 09/09/09 1303 Alkalinity Total as CaCO3 54.2 mg/L 5.0 104 90 110 Sample ID C09080922-OO7AMS Sample Matrix Spike Run MANTECH_090909A 09/09/09 1352 Alkalinity Total as CaCO3 888 mg/L 5.0 100 60 120 Sample ID C09080922-OO7AMSD Sample Matrix Spike Duplicate Run MANTECH_090909A 09/09/09 1401 Alkalinity Total as CaCO3 895 mg/L 5.0 106 80 120 0.8 20 Method A2540 Batch 090903_1_SLDS-TDS-W Sample ID MBLKI_090903 Method Blank Run BAL-1_090903A 09/03/09 1431 Solids Total Dissolved TDS 180 ND mg/L Sample ID LCSI_090903 Laboratory Control Sample Run BAL-1_090903A 09/03/09 1432 Solids Total Dissolved TDS 180 998 mg/L 10 100 90 110 Sample ID C09090094-OOBAMS Sample Matrix Spike Run BAL-1_090903A 09/03/09 1437 Solids Total Dissolved TDS 180 11900 mg/L 10 107 90 110 Sample ID C09090094-OO8AMSD Sample Matrix Spike Duplicate Run BAL-1_090903A 09/03/09 1438 Solids Total DissolvedTDS 180 11900 mg/L 10 107 90 110 10 ND Not detected at the reporting limit EN5RGY 7T4S0RA TORIES ENERG YLABORA TORIES INC 2393 Sail Creek Hibway 82601 RU Box 3258 Caspe1c WY82602 To//Free 888.2350515 307235 0515 Fax 307234.1639 casperenergy/ab.con www.energylab.com QAIQC Summary Report Client Denison Mines USA Corp Report Date 10/02/09 Project 3rd Quarter Groundwater Work Order C09090094 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit QuaIl Method A4500-Cl Batch 090921A-CL-TTR-W Sampie iD MBLK9-090921A Chloride Method Blank ND mg/L 0.4 Run TITRATION_090921A 09/21/09 1157 Sampie iD C09090138-OO2AMS Chloride Sample Matrix Spike 47.0 mg/L 1.0 102 Run TITRATION_090921A 09/21/09 1348 90 110 Sample ID C09090138-OO2AMSD Chloride Sample Matrix Spike Duplicate 46.6 mg/L 1.0 101 Run TITRATION_090921A 09/21/09 1348 90 110 0.7 10 Sample ID LC535-090921A Chloride Laboratory Control Sample 3530 mg/L 1.0 100 Run TITRATION_090921A 09/21/09 1450 90 110 Method A4500-F Batch R123751 Sample ID MBLK Fluoride Method Blank ND mg/L 0.05 Run MANTECH_090915A 09/15/09 1153 Sample ID LCS Fluoride Laboratory Control Sample 1.02 mg/L 0.10 102 Run MANTECH_090915A 09/15/09 1156 90 110 Sample ID C09090113-OOIAMS Fluoride Sample Matrix Spike 1.79 mg/L 0.10 101 Run MANTECII_090915A 09/15/09 1236 80 120 Sample ID C09090113-OOIAMSD Fluoride Sample Matrix Spike Duplicate 1.79 mg/L 0.10 101 Run MANTECK_090915A 09/15/09 1240 80 120 10 Method A4500-H Sample ID ICVI_090902_2 pH Initial Calibration Verification Standard 6.91 s.u 0.010 101 Analytical Run 0R10N555A-2_090902B 09/02/09 1353 98 102 Method A4500-H Sample ID C09090091-OOIADUP p11 Sample Duplicate 8.02 s.u 0.010 Batch 090902_2_PH-W_555A-2 Run ORION5S5A-2_090902B 09/02/09 1428 10 Method A4500-NH3 Batch Ri 23503 Sample ID MBLK-1 Nitrogen Ammonia as Method Blank ND mg/L 0.02 Run TECHNICON_090909B 09/09/09 1412 Sample ID LCS-2 Nitrogen Ammonia as Laboratory Control Sample 19.7 mg/L 0.20 98 Run TECHNICON_090909B 09/09/09 1414 80 120 Sample ID C09090094-OO3AMS Nitrogen Ammonia as Sample Matrix Spike 2.56 mg/L 0.050 97 Run TECHNICON_090909B 09/09/09 1600 80 120 Sample ID C09090094-OO3AMSD Nitrogen Ammonia as Sample Matrix Spike Duplicate 2.64 mg/L 0.050 102 Run TECHNICON_090909B 09/09/09 1602 80 120 3.1 20 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration QAIQC Summary Report 0.2 0.09 0.001 0.1 0.2 Sample ID LFB-090917A Calcium Magnesium Manganese Potassium Sodium Laboratory Fortified Blank 48.2 mg/L 49.2 mg/L 0.978 mg/L 46.5 mg/L 47.5 mg/L 2.5 1.0 0.014 1.0 2.3 2.5 1.0 0.014 1.0 2.3 Run ICP2-C_090917A 96 85 115 98 85 115 98 85 115 93 85 115 94 85 115 Run ICP2-Cfi9091 7A 101 70 130 98 70 130 99 70 130 88 70 130 98 70 130 Run ICP2-C_09091 7A 93 70 130 95 70 130 95 70 130 87 70 130 96 70 130 09/17/09 1539 5.4 20 2.3 20 3.7 20 1.1 20 0.5 20 Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration EPERGY LABORATORIES ENERGYLAHORA TORIES INC 2393 Sail Creek Hibway 82601 RO Box 3258 Caspec WY82602 Toil Free 88235.0515 307235.0515 Pa 307.234.1639 caspenPenergylab.coin wivwenergy/ab.com Client Denison Mines USA Corp Project 3rd Quarter Groundwater Report Date 10/02/09 Work Order C09090094 Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method Sample ID Sulfate A4500-S04 LCS-1_090916 Laboratory Control Sample 4900 mg/L 59 102 Run TURB-2_090916A 90 110 Batch 090916_1_504-TURB-W 09/16/09 1054 Sample ID Sulfate MBLK-1_090916 Method Blank ND mg/L 0.6 Run TURB-2_090916A 09/16/09 1055 Sample ID Sulfate C09090094-OO8AMS Sample Matrix Spike 10400 mg/L 150 107 Run TURB-2_090916A 90 110 09/16/09 1131 Sample ID Sulfate C09090094-OO8AMSD Sample Matrix Spike Duplicate 10400 mg/L 150 106 Run TURB-2_09091 6A 90 110 09/16/09 1133 0.2 10 Method E200.7 Sample ID MB-090917A Calcium Magnesium Manganese Potassium Sodium Method Blank ND ND ND ND 0.3 mg/L mg/L mg/L mg/L mg/L Batch R123698 Run ICP2-C_09091 7A 09/17/09 1328 0.50 0.50 0.010 0.50 0.50 09/17/09 1332 09/17/09 1535SampleIDC09090211-OOIBMS2 Sample Matrix Spike Calcium 794 mg/L Magnesium 533 mg/L Manganese 10.1 mg/L Potassium 547 mg/L Sodium 1300 mg/L Sample ID C09090211-OOIBMSD Sample Matrix Spike Duplicate Calcium 752 mg/L Magnesium 521 mg/L Manganese 9.69 mg/L Potassium 541 mg/L Sodium 1300 mg/L ND Not detected at the reporting limit ENERO YLASORA TORIES INC -2393 Sail Creek Hibway 82601 P0 Box 3258 Caspac WV82602 Toll Free 8692350515 3072350515 Fax 3072341639 casperenergyIab.com wwwenergylab.corn QA/QC Summary Report Report Date 10/02109 Work Order 009090094 EIERGY LAI3ORA TORIES Client Denison Mines USA Corp Project 3rd Quarter Groundwater Arsenic Cadmium Chromium Cobalt Copper Iron Lead 0.0526 mgIL 0.135 mgIL 0.0518 mg/L 0.333 mg/L 0.0592 mg/L 1.20 mg/L 0.0543 mg/L 0.0010 0.010 0.050 0.010 0.010 0.030 0.050 Run ICPMS4-C_090903A 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 85 115 Run ICPMS4-C_090903A 105 70 130 97 70 130 104 70 130 70 130 99 70 130 94 70 130 107 70 130 RL Analyte reporting limit The analyte level was greater than four times the spike level In accordance with the method recovery is not calculated MDC Minimum detectable concentration Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Batch Qu Ri 23313 Run ICPMS4-C_090903AiiMethodBlank ND ND ND ND ND ND ND ND 6E-05 ND ND SE-OS ND ND ND ND 0.0007 mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L Method E200.8 Sample ID LRB Arsenic Cadmium Chromium Cobalt Copper Iron Lead Manganese Mercury Molybdenum Nickel Selenium Thallium Tin Uranium Vanadium Zinc Sample ID LFB Arsenic Cadmium Chromium Cobalt Copper Iron Lead Manganese Mercury Molybdenum Nickel Selenium Thallium Tin Uranium Vanadium Zinc SE-OS 4E-05 4E-05 4E-05 7E-OS 0.0006 2E-O5 3E-05 4E-OS 0.0001 6E-O5 3E-05 3E-05 0.0006 3E-05 4E-05 0.0002 0.0010 0.0010 0.00 10 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.00030 0.00 10 0.0010 Laboratory Fortified Blank 0.0525 mg/L 0.0509 mg/L 0.052 mg/L 0.0493 mg/L 0.0529 mg/L 1.28 mg/L 0.0510 mg/L 0.0501 mg/L 0.00516 mg/L 0.0513 mg/L 0.0529 mgIL 0.0520 mg/L 0.0504 mg/L 0.0507 mg/L 0.0482 mg/L 0.0522 mgIL 0.0542 mg/L 09/03/09 1204 09/03109 1209 09/04/09 0711 105 102 104 99 106 102 102 100 102 103 106 104 101 101 96 104 107 Sample ID C09090094-OO8BMS4 Sample Matrix Spike Qualifiers ND Not detected at the reporting limit ENERG VLABORA TORIES INC 2393 Sail Creek Hi/iway 82601 P0 Box 3258 Caspe4c WV82602 Toll Free 888.235.0515 307235 0515 Fax 307234.1639 casper4energy/ab.com invwenergy/ab.comEIERGY LABOR/i TORIES QA/QC Summary Report Client Denison Mines USA Corp Report Date 10/02/09 Project 3rd Quarter Groundwater Work Order C09090094 Analyte ount Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method E200.8 Batch R123313 Sample ID C09090094-OO8BMS4 jj Sample Matrix Spike Run ICPMS4-C_090903A 09/04/09 0711 Manganese 31.7 mg/I 0.010 70 130 Mercury 0.00494 mg/L 0.0010 99 70 130 Molybdenum 0.639 mg/L 0.10 70 130 Nickel 0.190 mg/L 0.050 96 70 130 Selenium 0.0640 mg/I 0.0010 107 70 130 Thallium 0.0545 mg/I 0.0010 107 70 130 Tin 0.0501 mg/I 0.0010 100 70 130 Uranium 0.110 mg/I 0.00030 117 70 130 Vanadium 0.0540 mg/I 0.0010 107 70 130 Zinc 0.529 mg/I 0.010 70 130 Sample ID C09090094-OD8BMSD fl Sample Matrix Spike Duplicate Run ICPMS4-C_090903A 09/04/09 0737 Arsenic 0.0523 mg/I 0.0010 104 70 130 0.6 20 Cadmium 0.133 mg/I 0.010 94 70 130 1.4 20 Chromium 0.0519 mg/I 0.050 104 70 130 0.2 20 Cobalt 0.333 mg/I 0.010 70 130 0.1 20 Copper 0.0594 mg/I 0.010 99 70 130 0.5 20 Iron 1.30 mg/I 0.030 103 70 130 8.2 20 lead 0.0551 mg/I 0.050 108 70 130 1.3 20 Manganese 31.6 mg/I 0.010 70 130 0.2 20 Mercury 0.00499 mg/I 0.0010 100 70 130 20 Molybdenum 0.622 mg/I 0.10 70 130 2.8 20 Nickel 0.189 mg/I 0.050 95 70 130 0.3 20 Selenium 0.0686 mg/I 0.0010 116 70 130 6.8 20 Thallium 0.0552 mg/I 0.0010 108 70 130 1.3 20 Tin 0.0503 mg/I 0.0010 101 70 130 0.3 20 Uranium 0.109 mg/I 0.00030 115 70 130 0.9 20 Vanadium 0.0539 mg/I 0.0010 107 70 130 0.2 20 Zinc 0.535 mg/I 0.010 70 130 1.2 20 Method E200.8 Batch R123426 Sample ID LRB Method Blank Run ICPMS4-C_090908A 09/08/09 1136 Beryllium ND mg/I 6E-05 Silver ND mg/I 4E-05 Sample ID LFB laboratory Fortified Blank Run ICPMS4-C_090908A 09/08/09 1141 Beryllium 0.0544 mg/I 0.0010 109 85 115 Silver 0.0219 mg/I 0.0010 109 85 115 Sample ID C09090094-OO8BMS4 Sample Matrix Spike Run ICPMS4-C_090908A 09/08/09 2348 Beryllium 0.0395 mg/I 0.010 75 70 130 Silver 0.0127 mg/I 0.010 70 130 Sample ID C09090094-OO8BMSD Sample Matrix Spike Duplicate Run ICPMS4-C_090908A 09/08/09 2353 Beryllium 0.0385 mg/I 0.010 73 70 130 2.4 20 Silver 0.0128 mg/I 0.010 64 70 130 0.5 20 Qualifiers RI Analyte reporting limit The analyte level was greater than four times the spike level In accordance with the method recovery is not calculated ND Not detected at the reporting limit MDC Minimum detectable concentration Spike recovery outside of advisory limits QA/QC Summary Report Qualifiers RL Analyte reporting limit MDC Minimum detectable concentration Not detected at minimum detectable concentration ND Not detected at the reporting limit Spike recovery outside of advisory limits EN5RGY LA//C/ti 7CR/ES ENERO YLABORA TORIES INc 2393 Saft creek Hbway 82601 P0 Box 3258 caspe.c WV82602 Toll Free 888.235.0515 307235 0515 Fax 307234.1639 casperenergy/ab.com wivwenergy/ab.corn Client Denison Mines USA Corp Project 3rd Quarter Groundwater Count Result Units Report Date 10/02/09 Work Order C09090094 RL %REC Low Limit High LimIt RPD RPDLImit Qual Method E353.2 Sample ID MBLK-1 Nitrogen NitrateNitrite as Method Blank ND mg/L 0.03 Run TECHNICON_090909A Batch R123474 09/09/09 1056 Sample ID LCS-2 Nitrogen NitrateNitrite as Laboratory Control Sample 2.61 mg/L 0.10 104 Run TECHNICON_090909A 90 110 09/09/09 1056 Sample ID C09090094-OO3AMS Nitrogen NitrateNitrite as Sample Matrix Spike 1.76 mg/L 0.10 88 Run TECHNICON.090909A 90 110 09/09/09 1113 Sample ID C09090094-O03AMSD Nitrogen NitrateNitrite as Sample Matrix Spike Duplicate 1.77 mgIL 0.10 69 Run TECHNICON_090909A 90 110 0.6 09/09/09 1116 10 Method E900.1 Sample ID MB-GA-0265 Gross Alpha minus Rn Gross Alpha minus Rn Precision Gross Alpha minus Rn MDC Method Blank -0.1 pCi/L 0.5 pCi/L 0.9 pCi/L Run BERTHOLD 770-1_090922A Batch GA-0265 09/24/09 1423 Sample ID LCS-GA-0265 Gross Alpha minus Rn Laboratory Control Sample 29.lpCi/L 111 Run BERTHOLD 770-1_090922A 70 130 09/24/09 1423 Sample ID C09090094-OO8CMS Gross Alpha minus Rn Sample Matrix Spike 31 .6pCi/L 107 Run BERTHOLD 770-1_090922A 70 130 09/24/09 1607 Sample ID C09090094-DO8CMSD Gross Alpha minus Rn Sample Matrix Spike Duplicate 28.7pCi/L 96 Run BERTHOLD 770-1_090922A 70 130 9.6 09/24/09 1607 25.8 ENERGYLABORA TORIES INC 2393 Sail Creek Hqbway 82501 P0 Box 3258W Caspac WY82602 To//Free 888.235.0515 3072350515 Fai 307234.1639 casperenergy/ab.com wwwenergy/ab.comEtERGY LABOR/I To//c.c QAIQC Summary Report Client Denison Mines USA Corp Report Date 10/02/09 Project 3rd Quarter Groundwater Work Order C09090094 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method SW8260B Batch Ri 23475 Sample ID 08-Sep-09_LCS_3 Laboratory Control Sample Run GCMS2_090908B 09/08/09 1253 Benzene 11 ug/L 1.0 106 70 130 Carbon tetrachloride 9.7 ug/L 1.0 97 70 130 Chloroform 9.5 ug/L 1.0 95 70 130 Chloromethane 10 ug/L 1.0 100 70 130 mp-Xylenes 20 ug/L 1.0 102 70 130 Methyl ethyl ketone 96 ug/L 20 96 70 130 Methylene chloride 12 ug/L 1.0 118 70 130 Naphthalene 6.8 ug/L 1.0 70 130 o-Xylene 11 ug/L 1.0 110 70 130 Toluene 12 ug/L 1.0 117 70 130 Xylenes Total 31 ug/L 1.0 105 70 130 Surr Dibromofluoromethane 1.0 94 70 130 Surr p-Bromofluorobenzene 1.0 96 80 130 Surr Toluene-d8 1.0 104 80 120 Surr 12-Dichlorobenzene-d4 1.0 108 80 120 Sample ID 08-Sep-09_MBLK_8 li Method Blank Run GCMS2_090908B 09/08/09 1757 Benzene ND ug/L 1.0 Carbon tetrachioride ND ug/L 1.0 Chloroform ND ug/L 1.0 Chioromethane ND ug/L 1.0 mp-Xylenes ND ug/L 1.0 Methyl ethyl ketone ND ug/L 20 Methylene chloride ND ug/L 1.0 Naphthalene ND ug/L 1.0 o-Xylene ND ug/L 1.0 Toluene ND ug/L 1.0 Xylenes Total ND ug/L 1.0 Surr Dibromofluoromethane 1.0 91 70 130 Surr p-Bromofluorobenzene 1.0 102 80 120 Surr Toluene-d8 1.0 100 80 120 Surr 12-Dichlorobenzene-d4 1.0 103 80 120 Sample ID C09081064-OO6GMS jj Sample Matrix Spike Run GCMS2_090908B 09/09/09 0131 Benzene 100 ug/L 10 105 70 130 Carbon tetrachloride 100 ug/L 10 100 70 130 Chloroform 100 ug/L 10 102 70 130 mp-Xylenes 95 ug/L 10 95 70 130 o-Xylene 110 ug/L 10 109 70 130 Toluene 110 ug/L 10 110 70 130 Xylenes Total 200 ug/L 10 102 70 130 Surr Dibromofluoromethane 10 108 70 130 Surr p-Bromofluorobenzene 10 100 80 120 Surr Toluene-d8 10 101 80 120 Surr 12-Dichlorobenzene-d4 10 111 80 120 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration Spike recovery outside of advisory limits ENERGVLASORA TORIES INC 2393 Sail Creek Hibway 82601 P0 Box 3258 Caspec WY82602 Toil Free 888.235 0515 307.235.0515 Fax 307234.1639 casperenergy/ab.com www.enecgylab.comENERGY LARORA TORIES QAIQC Summary Report Client Denison Mines USA Corp Report Date 10/02/09 Project 3rd Quarter Groundwater Work Order C09090094 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method SW8260B Batch R123475 Sample ID C09081064-OO6GMSD ii Sample Matrix Spike Duplicate Run GCMS2_090908B 09/09/09 0209 Benzene 100 ug/L 10 105 70 130 20 Carbon tetrachloricle 100 ug/L 10 103 70 130 3.2 20 Chloroform 100 ug/L 10 100 70 130 2.4 20 mp-Xylenes 99 ug/L 10 99 70 130 4.1 20 o-Xylene 110 ug/L 10 109 70 130 0.4 20 Toluene 110 ug/L 10 110 70 130 20 Xylenes Total 210 ug/L 10 104 70 130 2.1 20 Surr Dibromofluoromethane 10 102 70 130 10 Surr p.Bromofluorobenzene 10 99 80 120 10 SurrToluene-d8 10 100 80 120 10 Surr 12-Dichlorobenzene-d4 10 107 80 120 10 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit MDC Minimum detectable concentration Ch a i n of Cu s t o d y an d An a l y t i c a l Re q u e s t Re c o r d PL E A S E PR I N T Pr o v i d e as mu c h in f o r m a t i o n as oo s s i b l e 3 Co m a u 3 L N a r y l e fu /1 1 iw c s Re p o r t Ad d r e s s 80 7 In v o i c e Ad d r e s s 1M 7 fA r .S A . 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do w n l o a d a b l e fe e sc h e d u l e fo r m s an d li n k s EI E R G Y LA B O R A TO R I E S Pa g e of Co m p a n . m e Re p o r t au Ad d r ss 5a 7 In v o i c e Ad d r e s s cs a m L Sp e c i a l R e p o r t / F o r m a t s DW ED D / E D T E l e c t r o n i c Da t a PO T W / W W T P Fo r m a t _ _ _ _ _ _ _ _ _ _ OS t a t e EL E V E L I V Ot h e r NE C PW S rm i t Et c Or i g i n EP A / S t a t e Co m p l i a n c e SW Lr o a I W4 St a t e Ye s No Co n t a c t Na m e Ph o n e / F a x Em a i l Sa m p l e r Pl e a s e Pr i n t Pa tr m i ln v o i c j C o n t a c t Ph o n e Pu r c h a s e Or d e r Qu o t e / B o t t l e Or d e r . 7 Co n t a c t EL I pr i o r to Sh l p g p d f t y RU S H s a m p l e s u b m i t t a l /t 1 4 L W fo r ch a r g e s an d ole r ID s sc h e d u l i n g - S e e In s t r u c U o n Pa g e Iv Co m m e n t s Re c e i p t l e m p it . t DC ac 5 00 01 1 1 c c cu s t o d y Se a l On B o t t l e /3 1 J 5 I tt \ On C o o l e r 9/ co E 1A u I I 5L I J e S In t a c t MA T R I X /4 Sig n a t u r e Ma t c h L/ -o I I I I I I I I I I T _ j j e I A u 1 h 2- L A - 14 W II I I I I I I I I I i i i 4 J / i SA M P L E ID E N T I F I C A T I O N Na m e Lo c a t i o n In t e r v a l et c 1n i i 1 eo 31 1 1 A Co l l e c t i o n Da t e u- $3 / f l t- l fb i Co l l e c t i o n Ti m e oi 3O 5 /2 pi 10 jn v 4 Cu s t o d y Re l i n s s d by pr i n t Da t e / l i m e Sig n a t u r e Re c o r d 1% / 4 L ou \ V C _ S0 Dy pr i n t MU S T be Da t e / l i m e Sig n a t u r e Si g n e d Sa m p l e Dis p o s a l Re t u r n to cl i e n t La b Dis p o s a l TR e c e i v e d by pr i n t Da t e / T i m e Sig n a t u r e Re c e i v e d by pr i n t Da t e / T i m e sig n a t u r e Sig n a l u m bo r a t o t_ . _ _ e 7 / / 1 4 Z 4/ / 9 /Æ s 4 In ce r t a i n ci r c u m s t a n c e s s a m p l e s su b m i t t e d to En e r g y La b o r a t o r i e s In c ma y be su b c o n t r a c t e d to ot h e r ce r t i f i e d la b o r a t o r i e s in or d e r to co m p l e t e th e an a l y s i s re q u e s t e d Th i s s e r v e s as no t i c e of th i s po s s i b i l i t y All su b - c o n t r a c t d a t a wil l be cl e a r l y no t a t e d on yo u r an a l y t i c a l r e p o r t Vis i t ou r we b si t e at ww w . e n e r p v l a b . c o m fo r ad d i t i o n a l in f o r m a t i o n do w n l o a d a b l e fe e sc h e d u l e fo r m s an d li n k s Et E R G Y LA L 5 O R A T O R I E S Ch a i n of Cu s t o d y an d An a l y t i c a l Re q u e s t Re c o r d Pa g e of PL E A S E PR I N T Pr o v i d e as mu c h in f a r r n a t i n n as no s s i b l e Energy Laboratories Inc VVorkorder Receipt Checklist Denison Mines USA Corp C09090094 Login completed by Kimberly Humiston Date and Time Received 9/1/2009 456 PM Reviewed by BL2000\kschroeder Received by em Reviewed Date 9/3/2009 100713AM Carrier name Hand Del Shipping container/cooler in good condition Yes No Not Present Custody seals intact on shipping container/cooler Yes No Not Present Custody seals intact on sample bottles Yes No Not Present Chain of custody present Yes No Chain of custody signed when relinquished and received Yes No Chain of custody agrees with sample labels Yes No Samples in proper container/bottle Yes No Samplecontainers intact Yes No Sufficient sample volume for indicated test Yes No All samples received within holding time Yes No Container/Temp Blank temperature 2C Water VOA vials have zero headspace Yes No No VOA vials submitted Water-pH acceptable upon receipt Yes No NotApplicable Contact and Corrective Action Comments Nitrate Ammonia and VOC samples were received 08-28-09 at 930 with receipt temperature of 4C on ice Due to UPS shipping error resamples had to be submitted for dissolved metals dissolved radiochemistry and inorganic parameters These samples were hand delivered to ELI on 09-01-09 ENEAG VLABORA TORIES INC 2393 Sail Creek Hi/iway 82601 P0 Box 3258 Caspei WV82602 Toll Free 888.235.0515 307235.0515 Fai 307234.1639 casperenergy/ab.coin www energy/al cornENERGY LASORA TORIES CLIENT Denison Mines USA Corp Date 02-Oct-09 Project 3rd Quarter Groundwater CASE NARRATIVE Sample Delivery Group C09090094 ORIGINAL SAMPLE SUBMITTALS All original sample submittals have been returned with the data package SAMPLE TEMPERATURE COMPLIANCE 4C 2C Temperature of samples received may not be considered properly preserved by accepted standards Samples that are hand delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun GROSS ALPHA ANALYSIS Method 900.0 for gross alpha and gross beta is intended as drinking water method for low TDS waters Data provided by this method for non potable waters should be viewed as inconsistent RADON IN AIR ANALYSIS The desired exposure time is 48 hours days The time delay in returning the canister to the laboratory for processing should be as short as possible to avoid excessive decay Maximum recommended delay between end of exposure to beginning of counting should not exceed days SOIL/SOLID SAMPLES All samples reported on an as received basis unless otherwise indicated ATRAZINE SIMAZINE AND PCB ANALYSIS Data for PCBs Atrazine and Simazine are reported from EPA 525.2 PCB data reported by ELI reflects the results for seven individual Aroclors When the results for all seven are ND not detected the sample meets EPA compliance criteria for PCB monitoring SUBCONTRACTING ANALYSIS Subcontracting of sample analyses to an outside laboratory may be required If so ENERGY LABORATORIES will utilize its branch laboratories or qualified contract laboratories for this service Any such laboratories will be indicated within the Laboratory Analytical Report BRANCH LABORATORY LOCATIONS eli-b Energy Laboratories Inc Billings MT eli-g Energy Laboratories Inc Gillette WY eli-h Energy Laboratories Inc Helena MT eli-r Energy Laboratories Inc Rapid City SD eli-t Energy Laboratories Inc College Station TX CERTIFICATIONS USEPA WY00002 Radiochemical WY00937 FL-DOH NELAC E87641 Radiochemical E871017 Califomia 021 I8CA Oregon WY20000I Utah 3072350515 Virginia 00057 Washington C1903 ISO 17025 DISCLAIMER The results of this Analytical Report relate only to the items submitted for analysis ENERGY LABORATORIES INC CASPERWY certifies that certain method selections contained in this report meet requirements as set forth by the above accrediting authorities Some results requested by the client may not be covered under these certifications All analysis data to be submitted for regulatory enforcement should be certified in the sample state of origin Please verify ELIs certification coverage by visiting www.energylab.com ELI appreciates the opportunity to provide you with this analytical service For additional information and services visit our web page www.energylab.com THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT Client Denison Mines Project 3rd Quarter Ground Water Sampling Lab Sample ID 0908498-002A Client Sample ID MW-i Collection Date 8/26/2009 13600 PM Received Date 8/27/2009 Method Used 5W8260C Analytical Results VOAs by GC/MS Method 8260C15030C Units .tg/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual TetrahydrofUran 109-99-9 2.0 5.3 Surr 12-Dichloroethane-d4 17060-07-0 77-144 110 Surr 4-Bromofluorobenzene 460-00-4 80-123 96.5 Surr Dibromofluoromethane 1868-53-7 80-124 102 Surr Toluene-d8 2037-26-5 80-125 102 Report Date 9/2/2009 Page of All analyses applicable te the CWA 50WA and RCRA are performed in accordance to NELAC pratneals Pertinent sampling information is lecated na the attached COC This report is provided for the evelasive ase of the addressee Privileges of sabseqnent ase of the name of this company or any member of its staff or reprodaction of this report in connection with the advertisement promotion nr sale of any prodnet or process or in connection with the re-pabticatien of this report for any pnrpose other than for the addressee will be granted only on contact This company accepts no responsibility except for the dae performance of inspection and/or analysis in gend faith and according to the rales of the trade end of science ORGANIC ANALYTICAL REPORT Contact Steve Landau Analyzed 8/28/2009 125400 AM AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awalAabs.com Kyle Gross Laboratory Director Jose Rocha QA Officer 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.eom Kyle Gross Laboratory Director Jose Rocha QA Officer Client Project Lab Sample ID Client Sample ID Collection Date Received Date Method Used Analytical Results Report Dale 8/25/2009 Page of Alt analyses applicable ta she CWA SDWA and RCRA are performed in accordance In NELAC protocols Pertinent sampling information is located on the attached COC This report is provided for the exelasive ase af the addressee Privileges of sabseqaent ase of the name af this company or any member of its staff or reprodoctioa of this reparl in connection with the advertisement promotion or sale of any prodact or process or in connection with there pablication of this report far any pnrpose other than far the addressee svill be granted anly an contact This company accepts an respansibility encept far the dna performance of inspection and/or analysis in goad faith and according to the rales of the trade and of science AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 ORGANIC ANALYTICAL REPORT Denison Mines Contact Steve Landau 3rd Quarter Ground Water Sampling 0908396-OO1A IvFV 8/18/2009 113200 AM Analyzed 8/21/2009 114200 AM 8/21/2009 5W8260C VOAs by GC/MS Method 8260C15030C Units j.tg/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofhran 109-99-9 2.0 2.0 Surr 12-Dichloroethane-d4 17060-07-0 77-144 112 Surr 4-Bromofluorobenzene 460-00-4 80-123 102 Surr Dibromofluoromethane 1868-53-7 80-124 102 Surr Toluene-d8 2037-26-5 80-125 100 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Client Project Lab Sample ID Client Sample ID Collection Date Received Date Method Used Denison Mines 3rd Quarter Ground Water Sampling 0908498-001 MW-3 8/25/2009 55400 AIvI 8/27/2009 SW8260C Kyle Gross Laboratory Director Jose Rocha QA Officer Report Date 9/2/2009 Page of All analyses applicable In lho CWA 5DWA and RCRA are performed in accordance to NELAC prolarals Persinenl sampling informasion is lacased an the allached COC This reporl is provided far thn nxnlasive ase af she addressee Privileges of sabseqarnt nsn of she name of this company or any member nf ils slaff nr repradnnlion of Ibis report in connection with she adoortisomeal promotion or sale of any prodacl or process or in eonaerlion with the re pablicalion of Ihis report for any parpase alher than far she addressee will be graaled only an contacl This company accepts no responsibility oacepl for Iho doo performance of inspection aadlor analysis in good fatlh and according to she mles of she srade and of science ORGANIC ANALYTICAL REPORT AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 Analytical Results Contact Steve Landau Analyzed 8/28/2009 123400 AM VOAs by GC/MS Method 8260C15030C Units 1g/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual TetrahydrofUran 109-99-9 2.0 2.0 Surr 12-Dichloroethane-d4 17060-07-0 77-144 110 Surr 4-Bromofluorobenzene 460-00-4 80-123 96.9 Surr Dibromofluoromethane 1868-53-7 80-124 102 Surr Toluene-d8 2037-26-5 80-125 101 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer Client Project Lab Sample ID Client Sample ID Collection Date Received Date Method Used Analytical Results Report Date R/25/2009 Page of All analyses applicable to she CWA 5DWA and RCRA are performed in accordance to NELAC peotocols Pertinent sampling information is located an the attached COC This report is provided for the enclosive ase of the addressee Privileges of snhseqaent nse of tho name of this company oe any member of its staff or roprodaction of this report in connection with the advertisement promotion or sate of any prodact or process or in connection with there pahticotion of this eeport for any pnrpose other than for the oddressee will be gmnted ooly on contact This company accepts no responsibility eocept for the doe performance of inspection and/or analysis in good faith ond according to the roles of the trade and of science AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 ORGANIC ANALYTICAL REPORT Denison Mines Contact Steve Landau 3rd Quarter Ground Water Sampling 0908396-002A MW-3A 8/18/2009 103500AM Analyzed 8/21/2009 120800PM 8/21/2009 5W8260C VOAs by GC/MS Method 8260C15030C Units p.g/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofran 109-99-9 2.0 2.0 Surr 12-Dichloroethane-d4 17060-07-0 77-144 111 Surr 4-Bromofluorobenzene 460-00-4 80-123 98.9 Surr Dibromofluoromethane 1868-53-7 80-124 99.5 Surr Toluene-d8 2037-26-5 80-125 101 463 West 3600 South Salt Lake City UT 84115 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer Client Project Lab Sample ID Client Sample ID Collection Date Received Date Method Used Analytical Results Report Dale 8/24/2009 Page 12 of 12 Alt analyses applicable ta the CWA SDWA and RCRA are perfaemed in accordance to NELAC pratocats Pertinent sampling information is larated an the attached COC This report is provided far Lhe nnrlssive ase af the addecsscc Privileges of snbseqacnl ose of the name of this company or any member of its staff or rcprodaclion of this report in connection with the advertisement promotion or sale of any peodoct or process or is cooncctinn with there pabticatioo of this report for any parposc other than for the addressee will ho granted only on contact This company accepts no responsibility enrept for the doe perfoemanco of inspection andlor analysis in good faith and according to thn rains of the trade and of scicncn AMERICAN WEST ANALYTICAL LABORATORIES ORGANIC ANALYTICAL REPORT Denison Mines Contact Steve Landau 3rd Quarter Ground Water Sampling 0908255-0 1A M5 8/12/2009 20700 PM Analyzed 8/18/2009 63400 PM 8/14/2009 5W8260C VOAs by GC/MS Method 8260C/5030C Units gL Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofliran 109-99-9 2.0 6.2 Surr l2-Dichloroethane-d4 17060-07-0 77-144 99.3 Surr 4-Bromofluorobenzene 460-00-4 80-123 104 Surr Dibromofluoromethane 1868-53-7 80-124 97.5 Surr Toluene-d8 2037-26-5 80-125 104 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer Client Project Lab Sample ID Client Sample ID Collection Date Received Date Method Used Analytical Results Report Date Sf2412009 Page of 12 All analyses applicable In She CWA 5DWA and RCRA are perfarmed in accardaace to NELAC pralacals Persinenl sampling infarmasiaa is lacaled an the allached COC This reparl is pravided far she enclusive use af she addressee Privilnges af sabseqacas ase af she name af shis company ar any member af iss staff ar repradaclian af ibis report is canaeclion wish She adversisemeal promotion ar sale af any pradacl ar process or in caaneclian wish the re-pnhlicaaan af Ibis repart far any parpase aiher than far she addressee will be granted anly an caatact This campaay accepts aa responsibility eacept far the dae perfarmaacc af iospectian aadiar analysis ia gaad faiih and accardiag La ihe rales af she Irade and af science AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 ORGANIC ANALYTICAL REPORT Denison Mines Contact Steve Landau 3rd Quarter Ground Water Sampling 0908255-OO1A M1l 8/12/2009 114800 AM Analyzed 8/17/2009 52500 PM 8/14/2009 5W8260C VOAs by GC/MS Method 8260C/5030C Units jig/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofitran 109-99-9 2.0 2.0 Surr 2-Dichloroethane-d4 17060-07-0 77-144 102 Surr 4-Bromofluorobenzene 460-00-4 80-123 103 Surr Dibromofluoromethane 1868-53-7 80-124 98.7 Surr Toluene-d8 2037-26-5 80-125 103 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer Client Denison Mines Project 3rd Quarter Ground Water Sampling Lab Sample ID 0908396-003A Client Sample ID MW-12 Collection Date 8/17/2009 903 00 AIvI Received Date 8/21/2009 Method Used 5W8260C Analytical Results VOAs by GC/MS Method 8260C/5030C Units jxg/L Dilntion Factor Compound CAS Nnmber Reporting Limit Analytical Result Qual Tetrahydrofhran 109-99-9 2.0 3.2 Surr l2-Dichloroethane-d4 17060-07-0 77-144 114 Sun 4-Bromofluorobenzene 460-00-4 80-123 100 Surr Dibromofluoromethane 1868-53-7 80-124 101 Surr Toluene-d8 2037-26-5 80-125 100 Report Date 8/25/2009 Page of Alt analyses applicable Ia lhe CWA 50WA and RCRA are performed in accordance to NELAC protocols Pertineas sampling information is located an the attached COC This report is provided far the exelasive ase af the addressee Privileges of sahseqaeas sse of the name of this eampony or any member of its ataff ar reprodactioa of this report ia conaeetion with the advertisement promotioa or sale of any prodaet or process aria eoaoeetioo with the re-poblication of this report for any porpose other than for the addressee will be granted oaly 00 contact This company accepts no responsibility except for the doe performance of inspection and/or aoalysis io good faith and according to the mies of the trade ond of seieoee ORGANIC ANALYTICAL REPORT AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 Contact Steve Landau Analyzed 8/21/2009 123400 PM Client Denison Mines Project 3rd Quarter Ground Water Sampling Lab Sample ID 0908498-003A Client Sample ID MW-12 Collection Date 8/26/2009 74500 Mvl Received Date 8/27/2009 Method Used 5W8260C Analytical Results VOAs by GC/MS Method 8260C15030C Units g/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofliran 109-99-9 2.0 2.0 Surr 12-Dichloroethane-d4 17060-07-0 77-144 112 Surr 4-Bromofluorobenzene 460-00-4 80-123 97.5 Surr Dibromofluoromethane 1868-53-7 80-124 104 Surr Toluene-d8 2037-26-5 80-125 100 Report Dale 9/2/2009 Page of All analyses applicable La the CWA 5DWA and RCRA are perfarmed in aceardance La NELAC peatacals Pertinent sampling infarmatiaa is laeated an the attached COC This repart is pravided far the eselasiva nsa af the addressee Privileges af sahseqaent ase af the name af this eampany ar any member af its staff ar repradnetian af this repart in canneetian with the advertisement pramatian ar sale nf any pradnet ae pracess ar in eanneetina setth the ee-pablieatian af this repart far any parpase ather than far the addressee will be granted anly an eantaet This eampany accepts as respansibility eseept far the dse perfarasanee af inspeetian and/ar analysis in gead faith and aecarding ta the rates af the trade and af science ORGANIC ANALYTICAL REPORT Contact Steve Landau Analyzed 8/28/2009 11300 AM AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.eom Kyle Gross Laboratory Director Jose Rocha QA Officer 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer Client Project Lab Sample ID Client Sample ID Collection Date Received Date Method Used Analytical Results Report Date 8/24/2009 Page of 12 All analyses applicable to the CWA 5OWA and RCRA are performed in nccnrdaoce to NELAC protncnls Pertinens sampling information is tocnted on the attached COC This report is provided for the enclasive ose of the addressee Privileges of sobseqoent use of the name of this company or any member of its staff or reprodoetion of thu report in connection with the ndvertiiement promotion or sale of any prodnct or process or in conoection with the ro pnblication of this report for any porpose other thon for the addressee will be gmnted only on contact This company accepts oo responsibility enccpt for the doe performonce of inspection nod/or analysis in good faith and according to the roles of the trade and of ocience AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 ORGANIC ANALYTICAL REPORT Denison Mines Contact Steve Landau 3rd Quarter Ground Water Sampling 0908255-002A MW-14 8/11/2009 90900 AM Analyzed 8/17/2009 55000 PM 8/14/2009 5W8260C VOAs by GC/MS Method 8260C15030C Units .tg/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofran 109-99-9 2.0 2.0 Surr 12-Dichloroethane-d4 17060-07-0 77-144 103 Surr 4-Bromofluorobenzene 460-00-4 80-123 102 Surr Dibromofluoromethane 1868-53-7 80-124 99.3 Surr Toluene-d8 2037-26-5 80-125 102 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.eom Kyle Gross Laboratory Director Jose Rocha QA Officer Client Denison Mines Project 3rd Quarter Ground Water Sampling Lab Sample ID 0908550-002A Client Sample ID MW-20 Collection Date 8/26/2009 30400 PM Received Date 8/28/2009 Method Used 5W8260C Analytical Results VOAs by GC/MS Method 8260C/5030C Units g/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofbran 109-99-9 2.0 2.0 Surr 12-Dichloroethane-d4 17060-07-0 77-144 108 Surr 4-Bromofluorobenzene 460-00-4 80-123 103 Surr Dibromofluoromethane 1868-53-7 80-124 104 Surr Toluene-d8 2037-26-5 80-125 107 Report Date 9/2/2009 Page of All analyses applicable to the CWA 5DWA and RCRA are peefemsed in accordance to NELAC protocols Pertinent sampling information is located on the attached COC This report is provided for the esclosive use of the addcessee Privileges of sahseqoeet use of the name of this compaey or any member of tts staff or reproduction of this report in connection with the odvertisemeet promotion or sole of any product oc pcocess or in connection svith the re-publication of this report for aoy purpose other than for the addressee will be gmeted only on contact This company accepts no respoesibility escept for the doe performance of iespcction and/or ouotysis in good faith and according to thc rules of the tradc and of science ORGANIC ANALYTICAL REPORT AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 Contact Steve Landau Analyzed 8/31/2009 100100 AM 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.eom Kyle Gross Laboratory Director Jose Rocha QA Officer Client Project Lab Sample ID Client Sample ID Collection Date Received Date Method Used Analytical Results Repcsrt Daie 9/2/2009 Page nf All analyses applicable to the CWA 5DWA and RCRA ore performed in accordance to NELAC protocols Pertinent sampling information is located on the attached COC This report is provided for the exclusive use of the addressee Privileges of suhseqneot use of the nome of this company orany member of its staff or reprodoction of this report in connection with the advertisement promotion or sole of any prodoct or process or in connection with the re-poblication of this report for any pnrposo other than for the addressee will he gmntrd only on contact This company accepts no msponsibility except for the doe performance of inspection ond/or analysis in good faith ood according to the mlos of the trade and of science AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 ORGANIC ANALYTICAL REPORT Denison Mines Contact Steve Landau 3rd Quarter Ground Water Sampling 0908550-003A MW-22 8/26/2009 20200 PM Analyzed 8/31/2009 102000 AM 8/28/2009 5W8260C VOAs by GC/MS Method 8260C15030C Units jig/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofran 109-99-9 2.0 2.0 Surr 12-Dichloroethane-d4 17060-07-0 77-144 110 Surr 4-Bromofluorobenzene 460-00-4 80-123 104 Surr Dibromofluoromethane 1868-53-7 80-124 105 Surr Toluene-d8 2037-26-5 80-125 105 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer Client Denison Mines Project 3rd Quarter Ground Water Sampling Lab Sample ID 0908396-004A Client Sample ID MW-23 Collection Date 8/18/2009 32300 PM Received Date 8/21/2009 Method Used SW8260C Analytical Results VOAs by GC/MS Method 8260C/5030C Units .ig/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofran 109-99-9 2.0 2.0 Surr 12-Dichloroethane-d4 17060-07-0 77-144 113 Surr 4-Bromofluorobenzene 460-00-4 80-123 99.1 Surr Dibromofluoromethane 1868-53-7 80-124 100 Surr Toluene-d8 2037-26-5 80-125 100 Report Dale 8/25/200Q Page of All analyses applicable ta the CWA 5DWA and RCRA are peefarmed in accardanee ta NELAC pratacals Pertinent sampling infarrnatmn is lacated an the attached COC This repart is pravided far the enelasive ase af the addressee Privileges af sabseqaent nsa af the name af this eampany ar any member af us staff er repradaetian af this repaet in canneetian with the advertisement pramatian ar sale af any pradacl ar praness ar in eanneetian wish the re pnbliratian af this repart far any parpase ather than far Ihe addressee will be granted anly an eantars This eampany accepts na respansibility escept far the dae perfarmance af inspentian andlar analysis in gaad faith and aecarding to the rales af the trade and af science ORGANIC ANALYTICAL REPORT AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 Contact Steve Landau Analyzed 8/21/2009 125900 PM 463 West 3600 South Salt Lake City UT 84115 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.eom Kyle Gross Laboratory Director Jose Rocha QA Officer Report Date 8/24/2009 Page of 12 All analyses applicable ta the CWA 5DWA and RCRA are performed to accoedanee ta NELAC protocols Pertinent sampling information is located an the attached COC This report is provided far the enelasive ate of the addressee Privileges of sabseqaent ase af the name of this company arany member of its staff or reprodaction of this report in connection with the advertisement promotion or sale of any pradact or process or to eonnectioo with the ce-pablication of this report for any parpose other than for the addressee will be gmoted only no contact This company accepts no responsibility escept for the doe performance of inspection aedlor annlysis in good faith and according to the rates of the trade acd of science AMERICAN WEST ANALYTICAL LABORATORIES ORGANIC ANALYTICAL REPORT Client Denison Mines Contact Steve Landau Project 3rd Quarter Ground Water Sampling Lab Sample ID 0908255-003A Client Sample ID MW-24 Collection Date 8/13/2009 73000 AM Analyzed 8/17/2009 61600 PM Received Date 8/14/2009 Method Used 5W8260C Analytical Resnlts VOAs by GC/MS Method 8260C15030C Units j.tg/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofliran 109-99-9 2.0 2.0 Surr 12-Dichloroethane-d4 17060-07-0 77-144 102 Surr 4-Bromofluorobenzene 460-00-4 80-123 103 Surr Dibromofluoromethane 1868-53-7 80-124 98.6 Surr Toluene-d8 2037-26-5 80-125 104 463 West 3600 South Salt Lake City UT 84115 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer Client Project Lnb Sample ID Client Sample ID Collection Date Received Date Method Used Analytical Results Report Date 8/24/2009 PageS of 12 All analyses applicable La the CWA 5DWA and RCRA are perfamsed in aeeardanee La NELAC prataeals Pertinent sampling iafaritsntian is laeated as the attached COC This repart is pravided far the exelasive nse af the addressee Privileges af sshseqaent ase af the name af this eampaay er any member af its staff ar reprednetian af this repart in eenneetian with the advertisement pramatiaa er sale af any pradnet ar preress ar in easneetian with the re-psblieatiaa af this repart far any parpase ether than far the addressee will be granted enty en eantaet This eampany accepts na respaasibility except far the dae perfanssanee nf inspeetian and/er analysis in gaed faith axd aeeardixg ta the rnles af the trade and ef science AMERICAN WEST ANALYTICAL LABORATORIES ORGANIC ANALYTICAL REPORT Denison Mines Contact Steve Landau 3rd Quarter Ground Water Sampling 0908255-004A MW-25 8/12/2009 92700 AM Analyzed 8/20/2009 95400 PM 8/14/2009 SW8260C VOAs by GC/MS Method 8260C15030C Units g/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofliran 109-99-9 2.0 2.0 Surr 12-Dichloroethane-d4 17060-07-0 77-144 109 Surr 4-Bromofluorobenzene 460-00-4 80-123 96.0 Surr Dibromofluoromethane 1868-53-7 80-124 99.4 Surr Toluene-d8 2037-26-5 80-125 102 463 West 3600 South Salt Lake City UT 84115 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.eom Kyle Gross Laboratory Director Jose Rocha QA Officer Report Date 8/24/2109 Page of 12 All analyses applicable in She CWA 5DWA and RCRA are perfarmed in accardance NELAC protacals Periiaent sampling infarmatina is located an the attached COC This report is pravided far Ihe enclusive sse of the addressee Privileges af sabsequent ase af the name af his company ar any member of its staff or reprodachen of this repoat in caanechaa wish the adveriinemeni promotian or sale of any pradact ar pracess ar in canneetian with the re pablication af ihis repori foe any parpase aiher ihan far She addressee will be geanted anly an coniocl This campany accepts na respansibiliiy escept far the dae perfarmanee of inspection nadine analysis in goad faith and according La the mles af the irade and of science AMERICAN WEST ANALYTICAL LABORATORIES ORGANIC ANALYTICAL REPORT Client Denison Mines Contact Steve Landau Project 3rd Quarter Ground Water Sampling Lab Sample ID 0908255-005A Client Sample ID MW-26 Collection Date 8/11/2009 22100 PM Analyzed 8/17/2009 70700 PM Received Date 8/14/2009 Method Used 5W8260C Analytical Results VOAs by GC/MS Method 8260C15030C Units g/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofliran 109-99-9 2.0 2.0 Surr 12-Diehloroethane-d4 17060-07-0 77-144 101 Surr 4-Bromofluorobenzene 460-00-4 80-123 103 Surr Dibromofluoromethane 1868-53-7 80-124 99.6 Surr Toluene-d8 2037-26-5 80-125 103 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.eom Kyle Gross Laboratory Director Jose Rocha QA Officer Client Denison Mines Project 3rd Quarter Ground Water Sampling Lab Sample ID 0908396-005A Client Sample ID MW-27 Collection Date 8/18/2009 15200 PM Received Date 8/21/2009 Method Used 5W8260C Analytical Results VOAs by GCIMS Method 8260C15030C Units l.tg/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofran 109-99-9 2.0 2.0 Surr 12-Dichloroethane-d4 17060-07-0 77-144 112 Surr 4-Bromofluorobenzene 460-00-4 80-123 101 Surr Dibromofluoromethane 1868-53-7 80-124 102 Surr Toluene-d8 2037-26-5 80-125 99.5 Report Date 8/25/200Q Page of All analyses applicable lathe CWA 5DWA and RCRA are perfarmed in accardance NELAC piatocols Peitmeni sampling infarmalian is lacased an die attached COC This report is pravided far she esclasive ase af she addressee Privileges af sabseqaent ase af she name af this rampany ar any member af its ssaff ar repradnesian af this report in canncctian wish she advertisement pramatian ar sale of any pradnct ar pracess ar in cannectian with she re pnhlicatian af his report far any parpase ather than far she addressee will ha granted only an contact This company accepts no respansibility except far the dna performance af inspection andlar analysis in goad faith and according to the rales of the trade and af science ORGANIC ANALYTICAL REPORT AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 Contact Steve Landau Analyzed 8/21/2009 12500 PM 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.eom Kyle Gross Laboratory Director Jose Rocha QA Officer Client Denison Mines Project 3rd Quarter Ground Water Sampling Lab Sample ID 0908396-006A Client Sample ID MW-28 Collection Date 8/17/2009 21200 PM Received Date 8/21/2009 Method Used 5W8260C Analytical Results VOAs by GC/MS Method 8260C15030C Units xg/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qua Tetrahydrofbran 109-99-9 2.0 2.0 Surr 12-Dichloroethane-d4 17060-07-0 77-144 116 Surr 4-Bromofluorobenzene 460-00-4 80-123 97.2 Surr Dibromofluoromethane 1868-53-7 80-124 101 Surr Toluene-d8 2037-26-5 80-125 99.9 Report Date 8/25/2009 Page of All analyses applicable ta the CWA 5OWA and RCRA are perfarmed in aecardance ta NELAC prataeals Pertinent sampling infarmatian is lacaled an the attached COC This repart is pravided far the eaclasive ace af the addressee Privileges af sabseqaeat ace af the name af this company ar any member af its staff or repradsctiae af this report in eaneeetiee with the advertisemeet promotion ar sale af any pradact ar process ar in caoaection with the re-pablieotiae af this repart far aey parpase ether than foe the addressee will be groeted oaly on caetact This company accepts ee responsibility escept far the dee performance ef inspection andlor analysis in geed faith aed accerdieg to the rales of the trade and of aeieeee ORGANIC ANALYTICAL REPORT AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 Contact Steve Landau Analyzed 8/21/2009 15 100 PM 463 West 3600 South Salt Lake City UT 84115 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer Client Project Lab Sample ID Client Sample ID Collection Date Received Date Method Used Analytical Results Report Date 8/24/2009 Page of 12 All analyses applicable Ia She CWA SDWA and RCRA are perfarmed in accardance In NELAC pralecals Pertinent sampling infarmattan is lacated an thn attached COC This repart is peavided far the eaclasive ase af the addcessee Privileges af snbseqsent asa nf the name af this campany ar any member af its staff ar repraduclian af this repart in cennectina with the advertisement pramatina ar sale af any pradect nr peecess nr in enanectian with there pablicatian nf this repart fee any pnrpase ether than far the addressee will be granted anty an cantaet This campany accepts na respansibility eacept far the dna perfarmance af inspectian andlar analysis in gand faith and accarding In the mles af the trade and af science AMERICAN WEST ANALYTICAL LABORATORIES ORGANIC ANALYTICAL REPORT Denison Mines Contact Steve Landau 3rd Quarter Ground Water Sampling 0908255-006A MW-29 8/10/2009 123200 PM Analyzed 8/17/2009 73300 PM 8/14/2009 5W8260C VOAs by GC/MS Method 8260C15030C Units jig/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofhran 109-99-9 2.0 2.0 Surr 12-Dichloroethane-d4 17060-07-0 77-144 104 Surr 4-Bromofluorobenzene 460-00-4 80-123 102 Surr Dibromofluoromethane 1868-53-7 80-124 99.8 Surr Toluene-d8 2037-26-5 80-125 100 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer Client Denison Mines Project 3rd Quarter Ground Water Sampling Lab Sample ID 0908255-007A Client Sample ID MW-30 Collection Date 8/10/2009 103700 AM Received Date 8/14/2009 Method Used 5W8260C Analytical Results VOAs by GC/MS Method 8260C15030C Units j.tg/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofitran 109-99-9 2.0 2.0 Surr 12-Diehloroethane-d4 17060-07-0 77-144 101 Surr 4-Bromofluorobenzene 460-00-4 80-123 103 Surr Dibromofluoromethane 1868-53-7 80-124 98.3 Surr Toluene-d8 2037-26-5 80-125 103 Report Date Sf2412009 Page of 12 All analyses applicable to the CWA 5oWA and RCRA are performed in accordance tn NELAC protocols Pertinent sampling infermation is located en the attached COC This report is provided foe the enclnsive use of the addressee Privileges of sabseqnent nse of the name of this company or any member of its stuff or reproduction of this report in connection wish the advertisement promotion or sale of any product or process or in connection with the re-publication of this report for any purpose other than for the addressee will be granted only on contact This company accepts no responsibility encept for the due performance of inspection andlor onolysis in good faith and according to the roles of the trade and of science ORGANIC ANALYTICAL REPORT AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UI 84115 Contact Steve Landau Analyzed 8/17/2009 75900 PM 463 West 3600 South Salt Lake City UT 84115 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Client Project Lab Sample ID Client Sample ID Collection Date Received Date Method Used Denison Mines 3rd Quarter Ground Water Sampling 0908255-008A MW-31 8/10/2009 25200 PM 8/14/2009 5W8260C Kyle Gross Laboratory Director Jose Rocha QA Officer Report Date 8/24/2000 Page of 12 All analyses applicable ta the CWA 5DWA and RCRA are perfanned in aceardanee ta NELAC pratacalt Perttnent sampling infarmatiaa is Ineated an the attached COC This repart is pravided far the anclasive ase af the addressee Privileges af snbseqaeni ate af the name af ibis cempany ar any member af its staff ar repradactian af this repart in eannectian with the advertisement pramatian ar tale af any pradaet nr pracess ar in cannectian with the re-pnblieatian af this repart far any pnrpnse ether than far the addressee will he granted anly an eantaet This campany accepts na respantiblltty encept far the dan perfarmance nf inspectian and/ar analysis in gand faith and accneding ta the mint af the trade and af science ORGANIC ANALYTICAL REPORT AMERICAN WEST ANALYTICAL LABORATORIES Analytical Results Contact Steve Landau Analyzed 8/18/2009 51700 PM VOAs by GC/MS Method 8260C/5030C Units j.ig/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofliran 109-99-9 2.0 2.0 Surr 12-Dichloroethane-d4 17060-07-0 77-144 100 Surr 4-Bromofluorobenzene 460-00-4 80-123 104 Surr Dibromofluoromethane 1868-53-7 80-124 98.3 Surr Toluene-d8 2037-26-5 80-125 104 463 West 3600 South Salt Lake City UT 84115 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer Client Project Lab Sample ID Client Sample ID Collection Date Received Date Method Used Analytical Results Report Date 8/24/200 Page 10 of 12 Alt analyses applicable te the CWA SOWA and RCRA are perfarmed in aeeardanee ta NELAC pratneats Pertinent sampling infarenatian is lecated en the attached COC This repart is pravided far the enetasive nse af the addressee Privileges nf snbseqaent ave af the name af this eampany ar any member ef its staff ar reprndaettan af this enpart in eanneettan with the advertisement pramatian ar sale af any prednet ar peneess nr in ceaneetian with the re pabtieatian nf this eepart far any perpase ether than far the addressee will he granted anty an enatnet This eampany accepts an respansibility eseept far the due perfarmanee af taspeetiea and/ar analysts in gand faith and aeeaeding ta the rates af the trade and afsetenee AMERICAN WEST ANALYTICAL LABORATORIES ORGANIC ANALYTICAL REPORT Denison Mines Contact Steve Landau 3rd Quarter Ground Water Sampling 0908255-009A MW-32 8/11/2009 14300 PM Analyzed 8/18/2009 54300 PM 8/14/2009 5W8260C VOAs by GC/MS Method 8260C15030C Units tg/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofran 109-99-9 2.0 2.0 Surr 12-Dichloroethane-d4 17060-07-0 77-144 101 Surr 4-Bromofluorobenzene 460-00-4 80-123 103 Surr Dibromofluoromethane 1868-53-7 80-124 98.4 Surr Toluene-d8 2037-26-5 80-125 101 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer Client Denison Mines Project 3rd Quarter Ground Water Sampling Lab Sample ID 0908255-O1OA Client Sample ID MW-65 Collection Date 8/11/2009 143 00 PM Received Date 8/14/2009 Method Used 5W8260C Analytical Results VOAs by GC/MS Method 8260C15030C Units ig/L Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydroftiran 109-99-9 2.0 2.0 Surr l2-Dichloroethane-d4 17060-07-0 77-144 102 Surr 4-Bromofluorobenzene 460-00-4 80-123 104 Surr Dibromofluoromethane 1868-53-7 80-124 99.5 Surr Toluene-d8 2037-26-5 80-125 101 Report Date 8/24/2009 Page 11 of 12 All analyses applicable tn the CWA 5OWA and RCRA are performed in sccnrdnnce to NaLAC protocats Pertinent sampling information is locnted on the attached COC This repnrt is provided foe the exclusive use of the addeessee Privileges of snhsequent nse nf the name of this company arany memhee of its stuff or reproduction nf this repnrl in connection with the advertisement promotion or sate nf nny penduct or prncess or in connection with the re-pnhlicntinn of this report foe soy paepose other than for the addressee mitt be geanted only on cootuct This company accepts oo respoosihility escept for the due performance of inspection sod/or onslysis in good faith sod according to the rules of the teude sod of science ORGANIC ANALYTICAL REPORT AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 Contact Steve Landau Analyzed 8/18/2009 60800 PM 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.eom Kyle Gross Laboratory Director Jose Roeha QA Officer Client Project Lab Sample ID Client Sample ID Collection Date Received Date Method Used Analytical Results Report Date 9/2/2009 Page of Alt analyses applicable ta the CWA 5OWA and RCRA are performed in accordance Ia NELAC protocols Pertinens sampling information is located an the attached COC This repast is provided for the csclnsise nse af she addressee Privileges of sabseqoent nse of the name of this company or any memberof its staff or reprodoction of this report in connection with the advertisement promotion or sale of ony prodnct or process or in connection with the re poblication of this report for any parpose other than for the addressee will he granted only on contact This company accepts no responsibility encept for the doe performance of inspection and/or analysis in good faith and according to the rales of the trade and of science AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 ORGANIC ANALYTICAL REPORT Denison Mines Contact Steve Landau 3rd Quarter Ground Water Sampling 0908550-004A MW-70 8/26/2009 20200 PM Analyzed 8/31/2009 104000 AM 8/28/2009 5W8260C VOAs by GC/MS Method 8260C/5030C Units jiglL Dilution Factor Compound CAS Number Reporting Limit Analytical Result Qual Tetrahydrofhran 109-99-9 2.0 2.0 Surr 12-Diehloroethane-d4 17060-07-0 77-144 110 Surr 4-Bromofluorobenzene 460-00-4 80-123 102 Surr Dibromofluoromethane 1868-53-7 80-124 103 Surr Toluene-d8 2037-26-5 80-125 106 AMERICAN Steve Landau Denison Mines 1050 17th Street 950 WEST Denver CO 80265- ANALYTICAL LABORATORIES 463 West 3600 South TEL 303 389-4132 FAX 303389-4125 RE 3rd Quarter Ground Water Sampling Salt Lake City UT American West Analytical Laboratories received 11 samples on 8/14/2009 for the 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.eom Kyle Gross Laboratory Director Jose Rocha QA Officer All analyses were performed in accordance to The NELAC Institute protocols unless noted otherwise American West Analytical Laboratories is certified by The NELAC Institute in the following states Utah Colorado Idaho and Texas Certification document is available upon request If you have any questions or concerns regarding this report please feel free to call The abbreviation Sun found in organic reports indicates sunogate compound that is intentionally added by the laboratory to determine sample injection extraction and/or purging efficiency The Reporting Limit found on the report is equivalent to the practical quantitaion limit PQL This is the minimumconcentration that can be reported by the method referenced and the sample matrix The reporting limit must not be confused with any regulatory limit Thank You Approved by Laboratory Director or designee Report Date 8/24/200 Page of 12 All analyses applicable to the CWA 5oWA and RCR.A are performed in aeenrdnnce so NaLAC prasneots Pertinent sampling informatian is lacaled an the attached COC This report is provided far the enelasive ase af she addressee Privileges af snbseqneni nse of she name of this company or any member of its staff ar reprodactian af Ibis report in connection with the advertisement promotion or sale of any pradnct or process or in connection with the re-pnhlicalion of this report for ony porpose other than for she oddressee wilt be granted only on contort This company accepts no responsibility oncopt for the doe performance of inspection andlor onolysis in good foish and according to the mles of the trodo ond of science Dear Steve Landau 84115 analyses presented in the following report Lab Set ID 0908255 Digitnlly nigned by Kyle F4cI DNLcnKyle oAWAL ouAWAL emnilkyleawnl-lnbn.com rOss eUS Date 2009.08.25 071238 -0600 Am e r i c a n We s t An a l y t i c a l La b o r a t o r i e s WO R K OR D E R Su m m a r y 14 - A u g - 0 9 Cl i e n t ID Co n t a c t Pr o j e c t Co m m e n t s DE N 10 0 St e v e La n d a u 3r d Qu a r t e r Gr o u n d W a t e r Sa m p l i n g No Ha r d Co p i e s QC Le v e l LE V E L Wo r k Or d e r 09 0 8 2 5 5 WO Ty p e St a n d a r d Re v i e w e d by on Sa m p l e ID Cli e n t Sa m p l e ID Da t e Co l l e c t e d Da t e R e c e i v e d Da t e Du e Ma t r i x Te s t Co d e Hid MS SE L Su b St o r a g e 09 0 8 2 5 5 - 0 0 1 A MW - l i 8/ 1 2 / 2 0 0 9 11 4 8 0 0 AM 8/ 1 4 / 2 0 0 9 10 2 2 3 8 AM 8/ 2 8 / 2 0 0 9 Aq u e o u s 82 6 0 - W fl f l f l VC C F r i d g e 09 0 8 2 5 5 - 0 0 2 A MW - 1 4 8/ 1 1 / 2 0 0 9 9 0 9 0 0 AM 8/ 2 8 / 2 0 0 9 82 6 0 - W fl VO C F r i d g e 09 0 8 2 5 5 - 0 0 3 A MW - 2 4 8/ 1 3 / 2 0 0 9 73 0 0 0 AM 8/ 2 8 / 2 0 0 9 82 6 0 - W fl VO O F r i d g e 09 0 8 2 5 5-0 04 A MW - 2 5 8/ 1 2 / 2 0 0 9 92 7 0 0 AM 8/ 2 8 / 2 0 0 9 82 6 0 - W fl VO C F r i d g e 09 0 8 2 5 5 - 0 0 5 A MW - 2 6 8/ 1 1 / 2 0 0 9 22 1 0 0 PM 8/ 2 8 / 2 0 0 9 82 6 0 - W I1 VO C F r i d g e 09 0 8 2 5 5 - 0 0 6 A MW - 2 9 8/ 1 0 / 2 0 0 9 12 3 2 0 0 PM 8/ 2 8 / 2 0 0 9 82 6 0 - W fl LI VO C F r i d g e 09 0 8 2 5 5 - 0 0 7 A MW - 3 0 8/ 1 0 / 2 0 0 9 10 3 7 0 0 AM 8/ 2 8 / 2 0 0 9 82 6 0 - W VO c F r i d g e 09 0 8 2 5 5 - 0 0 8 A MW - 3 1 8/ 1 0 / 2 0 0 9 25 2 0 0 PM 8/ 2 8 / 2 0 0 9 82 6 0 - W fl VO C F r i d g e 09 0 8 2 5 5- 0 0 9 A MW - 3 2 8/ 1 1 / 2 0 0 9 14 3 0 0 P M 8/ 2 8 / 2 0 0 9 82 6 0 - W fl VO C F r i d g e 09 0 8 2 5 5 - O 1 O A MW - 6 5 8/ 2 8 / 2 0 0 9 82 6 0 - W VO c F r i d g e 09 0 8 2 5 5 - 0 1 1A MW - 5 8/ 1 2 / 2 0 0 9 20 7 0 0 PM 8/ 2 8 / 2 0 0 9 82 6 0 - W fl f l f l Vo c F r i d g e SI OENISONIAA MINES CHAIN OF CUSTODY Sheeti of Samples Shipped to American West Analytical Lab 463 West 3600 South Salt Lake City Ut 84115 Contact Ryan Palmer or David Turk Ph 435 678 2221 maimer@denisonmines.com dturk@denisonmines.com Chain of Custody/Sampling Analysis Request Project Samplers Name Samplers Signature Sample ID Date Collected Time Collected Laboratory Analysis Requested MW-il 8/12/2009 1148 THF MW-14 8/11/2009 909 THF MW-24 8/13/2009 730 THF MW-25 8/12/2009 927 THF MW-26 8/11/2009 1421 THF MW-29 8/10/2009 1232 THF MW-30 8/10/2009 1037 THE MW-Si 8/10/2009 1452 THE MW-32 8/11/2009 1343 THE MW-65 8/11/2009 1343 THE ni-S 5/n%c11 Please nofity Ryan Palmer of Reciept tempature on these samples Immediately Thank you Relinquished Signature Litfttc b4251 Date/Time 8/13/20 Receive B9Signature Date/Time Relinquished BySignature Date54cfIe Rec ived BySignatur Dat /Time 3rd Quarter Ground Water Sam ping hIt4f Tanner Holliday J of La b S e t I D Sa m p l e s We r e CO C Ta p e Wa s Co n t a i n e r Ty p e No Re c 1æ p p e d B y J6 3 Pr e s e n t on Ou t e r Pa c k a g e NO Ye s El No O N / A QW A L Su p p l i e d Pl a s t i c Lu p p l i e d Cl e a r Gl a s s ia n d De l i v e r e d Am b i e n t Un b c p n on Ou t e r pa c k a g e No N/ A AW A L Am b e r Gl a s s AW A L Su p p l i e d /T O C / T O X Vi a l s Jh i l 1 e d Te m p e r a t u r e Xj 00 Pr e s on Sa m p l e El Ye s fl k l o N/ A Un b r o k e n o\ S a m p l e Ye s _ _ 0 No Am b e r Cl a n He a d s No No n AW Re c Br o l c e n l L e a l c i o g Ye s No N/ A No t e s Pr o p e r l y Pr e s e r v e d Ye s No El N/ A No t e s No t e s Dis c r e p a n c i e s Be t w e e n La b e l s an d CO C Ye s No No t e s Re c Wi t h i n Ho l d Ye s No No t e s Be t t l Ty p e Pr e s e r v a t i v e Al l pH s OK Am m o I jH H2 5 0 4 CO D pf l f l f i S Q 4 Cy a n i d e PH 12 Na O H Me t a l s pH HN O 3 -. N0 2 N O 3 pH 2 H 2 S O 4 ._ _ _ Nu t r i e n t s pH H2 5 0 4 .- - OG pH 2 H C L Ph e n o l s pH H2 5 0 4 Su l f i d e pH 9N a O l I Zu A C TK N pH 2 H 2 S O __ _ ._ _ _ .- . TO O T. P 0 4 pH 2 H 3 P O 4 pH 2 H 2 S O 4 TP H pH 2 H C L .. Po u r sm a l l am o u n t of sa m p l e in th e sa m p l e lid Po u r sa m p l e fr o m Lid ge n t l y ov e r wid e ra n g e ph pa p e r Do No t dip th e ph pa p e r in th e sa m p l e bo t t l e or lid If sa m p l e is no t pr e s e r v e d p r o p e r l y lis t it s ex t e n s i o n an d re c e i v i n g ph in th e a p p r o p r i a t e co l u m n ab o v e Fla g CO O an d no t i f y cli e n t fo r fu r t h e r in s t r u c t i o n s Pla c e cli e n t co n v e r s a t i o n on CO C Sa m p l e s m a y be ad i u s t e d at cli e n t re q u e s t Pr o c e d u r e 1I ni 1- 00 L4 U N A A R M S T R O N G 12 LB S or DE N I S O N M I N E S US A CO R P DW T 1 4 1 2 l O BL A N D I N G U T 84 5 1 1 Si - l I P TO AM E R I C A N WE S T AN A L Y T I C A L LA B 80 1 2 6 3 8 6 8 6 AM E R I C A N WE S T AN A L Y T I C A L L A B S 46 3 WE S T 36 0 0 SO U T H SA L T L A K E fl Y UT 84 1 1 5 - 4 2 4 6 UT 84 1 94 4 UP S NE X T D A Y AI R TR A C K I N G 1Z 8 4 1 6 7 1 0 1 9 1 3 9 9 9 9 2 BIL L I N G P / P tII S I 1 . 5 . 1 I Wx p I E l o 9 a o A o 4 / 2 0 0 9 TM -. c CD Na a-CD .C CC NA -- 1 I t Jl i 03 D3 03 - i 38 a c C D - Sw c w O -D 03 C ti l l 03 t I 3- P I cD w 1 o. Z Z -I omOO BC c -a a0 1 3 t0 - g fl co o 4 O_ S- C D .O 3 c c a- OV V C -o a_ CD 0- C c 3 D2 c- _ -a CT C C Wa _CCD Cr C/ rn oC t QO C0 3 50CD a. - . -aa LSCD aC t CD --CD - j 2C C 0J Dt _ io -t c0 or- CO a0 ga a Co fl .R . n 3r ti AoO By CD f l c5 2o CD a-a-CD Ca CD AMERICAN Steve Landau Denison Mines 1050 17th Street 950 WEST Denver CO 80265- ANALYTICAL LABORATORIES TEL 303 389-4132 FAX 303389-4125 RE 3rd Quarter Ground Water Sampling Lab Set ID 0908396 American West Analytical Laboratories received samples on 8/21/2009 for the analyses 84115 presented in the following report 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer All analyses were performed in accordance to The NELAC Institute protocols unless noted otherwise American West Analytical Laboratories is certified by The NELAC Institute in the following states Utah Colorado Idaho and Texas Certification document is available upon request If you have any questions or concerns regarding this report please feel free to call The abbreviation Sun found in organic reports indicates sunogate compound that is intentionally added by the laboratory to determine sample injection extraction and/or purging efficiency The Reporting Limit found on the report is equivalent to the practical quantitaion limit PQL This is the minimumconcentration that can be reported by the method referenced and the sample matrix The reporting limit must not be confused with any regulatory limit Thank You Approved by Laboratory Director or designee Report Date 8/25/2009 Page of All analyses applicable La the CWA SOWA aad RCRA are pnrfarmed in aeeardanee La NELAC pratacals Pertaseat sampling infarmatian is lacated an the altaehed C0C This repart is pravided far the evelasive nse af the addressee Privileges af sabseqaent use af the name af this eampany ar any member af its staff ar repradactian af this repart in canneetian with the advertisement pramatian nr sale af any pradact ar pracess ar in cannectian with the re-pablicatian af Ibis repart far any parpase ether than far the addressee will be granted anly aa eantact This campasy accepts na respansibility eveept far the dne perfarinanee af inspectian and/ar analysis in gaad faith and aceardiag lathe mlcs af the trade and af science 463 West 3600 South Salt Lake City UT Dear Steve Landau Kyle Digitally signed hp Kyle Grass DN en Kyle Grass AWAL ns AWAL email kyle@awal-labs cam us Dale 2ttt5 tS.25 111155 5555 Am e r i c a n We s t An a l y t i c a l La b o r a t o r i e s WO R K OR D E R Su m m a r y 21 - A u g - 0 9 Wo r k Or d e r 09 0 8 3 9 6 Cl i e n t JD DE N I O C WO Ty p e St a n d a r d Co n t a c t St e v e La n d a u Pr o j e c t 3r d Qu a r t e r Gr o u n d Wa t e r Sa m p l i n g QC Le v e l LE V E L Re v i e w e d by on Co m m e n t s No Ha r d Co p i e s Sa m p l e ID Cli e n t am p l e ID Da t e Co l l e c t e d Da t e R e c e i v e d Da t e Du e Ma t r i x Te s t Co d e Hid MS SE L Su b St o r a g e 09 0 8 3 9 6 - O O I A MW - 3 8/ 1 8 / 2 0 0 9 11 3 2 0 0 AM 8/ 2 1 / 2 0 0 9 94 6 4 1 AM 91 4 / Z 0 0 9 Aq u e o u s 82 6 0 - W fl f l f l VO C P r i d g e 09 0 8 3 9 6 - 0 0 2 A MW - 3 A 8/ 1 8 / 2 0 0 9 10 3 5 0 0 Alv I 9/ 4 / 2 0 0 9 82 6 0 - W fl f l f l VO C F r i d g e 09 0 8 3 9 6 - 0 0 3 A MW - 1 2 8/ 1 7 / 2 0 0 9 90 3 0 0 Mv 9/ 4 / 2 0 0 9 82 6 0 - W fl f l VO C F r d g e 09 0 8 3 9 6 - 0 0 4 A MW 23 8/ 1 8 / 2 0 0 9 32 3 0 0 PM 9/ 4 / 2 0 0 9 82 6 0 - W fl VO C P r i d g e 09 0 8 3 9 6 - 0 0 5 A MW - 2 7 8/ 1 8 / 2 0 0 9 15 2 0 0 PM 9/ 4 / 2 0 0 9 82 6 0 - W fl El II I VO C F æ d g e 09 0 8 3 9 6 - 0 0 6 A MW - 2 8 8/ 1 7 / 2 0 0 9 21 2 0 0 PM 9/ 4 / 2 0 0 9 82 6 0 - W fl f l VO C F r i d g e 07 o3 OENISONAA MINES CHAIN OF CUSTODY Samples Shipped to American West Analytical Lab Contact Ryan Palmer or David Turk 463 West 3600 South Ph 435 678 2221 Salt Lake City Ut 84115 rpalmer@ldenisonmines.com dturk@denisonmines.com Chain of Custody/Sampling Analysis Request Project Samplers Name Samplers Signature MW3 MW3A MW-12 MW-23 MW-27 MW-28 Time Collected 1132 1035 903 1523 1352 1412 HF HF ofi 3cf 3rd Quarter Ground Water Samping Tanner Holliday Sample ID Date Collected 8118/200 8/18/290 8/17/200 8/18/200 Laboratory Analysis Reciuested 8/18/200 TH 8/17/200 Please nofify Ryan Palmer of Reciept tempature on these samples Immediately Thank you eIpSi nature Date/Time 8/20/2009 1045 Received BySignature Date/Time Rehe BySignature Date/Time Received By5 .ijtir Date/Time c4 La b S e t i D 07 0 S 3 T 0 Sa m p l e s We r e CO C Ta p e Wa s Co n t a i n e r Ty p e No Re c gs h i p p e d By Pr e s e n t on Ou t e r Pa c k a g e AW A L Su p p l i e d Pl a s t i c Ha n d De l i v e r e d Am b i e n t Ye s No N/ A Un b r o k e n on Ou t e r pa c k a g e fi Y e s No N/ A Pr e s e n t on Sa m p l e AW A L Su p p l i e d Cl e a r Gl a s s AW A L Su p p l i e d Am b e r Gl a s s Ch i l l e d g- 1t a _ Tr n p e r a t u r e 00 AW A L Su p p l i e d YO A / T O C / T O X Vi a l s Am b e r Cl e a r He a d s p a c e No He a d s p a c e Re c Br o k e n / L e a k i n g Ye s No N/ A Ye s No 4N / A No n AW A L Su p p l i e d Co n t a i n e r No t e s Un b r o k e n on Sa m p l e No t e s Pr o p e r l y Pr e s e r v e d Ye s No N/ A DY e s ON o EN / A No t e s No t e s Re c Wi t h i n Ho l d kY e s No No t e s Dis c r e p a n c i e s Be t w e e n La b e l s an d CO O Ye s \r N o No t e s to t t J e T j p e - . _ . . . . . . j Pr e s e r v a t i v e Al l pH s OK Am m o n i a CO D pH H2 S 0 4 Cy a n i d e PH 1 2 T a O H ._ _ _ Me t a l s pH H N O 3 -- - - NO 2 N 0 3 Nu t r i e n t s pH 2 H 2 5 O 4 pH 21 1 2 3 0 4 Ph e n o l s -p pH 21 1 2 3 0 4 Su l f i d e pH 9N a O k i Zn A C -% TK N P1 1 2 1 1 2 3 0 4 TO O pH 2 H 3 P O TP O 4 pH 2 H 2 S O 4 TP H pH 2 H C L __ Po u r sm a l l am o u n t of sa m p l e in th e sa m p l e lid Po u r sa m p l e fr o m Lid ge n t l y ov e r wid e ra n g e ph pa p e r Do No t dip th e ph pa p e r in th e sa m p l e bo t t l e or lid If sa m p l e is no t pr e s e r v e d p r o p e r l y lis t it s ex t e n s i o n an d re c e i v i n g ph in th e ap p r o p r i a t e co l u m n ab o v e Fla g CO C an d no t i f y cli e n t fo r fu r t h e r i n s t r u c t i o n s Pla c e cli e n t co n v e r s a t i o n on CO C Sa m p l e s m a y be ad j u s t e d at c l i e n t re q u e s t Pr o c e d u r e 11 uc OC IA -8 -1 x I H I t C o - 1 it aB 2 C w 3C 5f l Ci gc CD ft rn C __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ cO gc C D c J 5c c Nt CD aj - ..5 2 - o- 1 CD CD 2_ C D c c __ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ CD g w CD CD mo o 0 5- C D a - CD WC D Ot t C nm ar n 0C D wo -D CD Cn -D __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 2. g c 0 DO __ _ _ _ _ _ 9- CD __ _ _ ci __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ -5 gc -D Cl CO 00 CD CD -C 12 LB S OF MIN E S US A CO R P DW T 1 2 1 O $ 19 1 UT 84 5 1 1 TO AM E R I C A N WE S T AN A L Y T I C A L LA B 80 1 - 2 6 3 - 8 6 8 6 AM E R I C A N WE S T AN A L Y T I C A L LA B S WE S T 36 0 0 SO U T H LA K E CI T Y UT 84 1 1 5 - 4 2 4 6 UT 84 1 9- 4 4 c4 b q 5t k t i J A 4 il l il l II ii NE X T D A Y AI R 1Z 8 4 1 6 7 1 0 1 9 7 6 1 4 2 3 8 1M S I S i WC D J R 7 D 9 3 . 0 A 0 7 1 2 0 0 9 TM Cl Oi rm DO CD pC D 2_ rn - a sa 5 co_s g sg w Ea . - a 2- 5- 5 _ -C Co -E Bj o2 - - Eg g rn CD CO O rn-5 rn D co g - CD rn CD Cr - -aco rnCD g- e - rn CD St rn r n O5 fl C 0 D. CD 0. - - 2_ C D CD DC r0 rn CD DC CD rn CD CD 463 West 3600 South TEL 303 389-4132 FAX 303389-4125 Salt Lake City UI American West Analytical Laboratories received samples on 8/27/2009 for the analyses 84115 presented in the following report 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.eom Kyle Gross Laboratory Director Jose Rocha QA Officer All analyses were performed in accordance to The NELAC Institute protocols unless noted otherwise American West Analytical Laboratories is certified by The NELAC Institute in the following states Utah Colorado Idaho and Texas Certification document is available upon request If you have any questions or concerns regarding this report please feel free to call The abbreviation Surr found in organic reports indicates surrogate compound that is intentionally added by the laboratory to determine sample injection extraction andlor purging efficiency The Reporting Limit found on the report is equivalent to the practical quantitaion limit PQL This is the minimum concentration that can be reported by the method referenced and the sample matrix The reporting limit must not be confused with any regulatory limit Thank You Approved by Laboratory Director or designee Report Date Q/2/20t19 Page of Alt analyses applicable so the CWA 5DWA and RCRA are performed in occardasee to NELAC prntnenls Pertinent sampling snfas-snatton is locased an the attached COC This repnrt is provided far the enelasive ase nf she addressee Privileges nf sabseqaent nse of she name of this company or any memhee of its staff or reprodaesios of this report in connection with the advertssemens promotion or sate of any peodaet or process or in connection with she re pabtseatson af Ibis repass fnr any parpose alher than far the addressee will he granted only an contact This eampany neeepss an respansibstity enceps far she dne performance of inspection and/or analysis in gond foish and according tn the rales af the teade and of science Steve Landau Denison Mines AMERICAN 1050 17th Street 950 WEST Denver CO 80265- ANALYTICAL LABORATORIES RE 3rd Quarter Ground Water Sampling Dear Steve Landau Lab Set ID 0908498 Kyle Digitally signed hy Kyle Gross 051 en Kyte Grass sAmAL on AWAL emaiNkptelgawnt labs cnm nLtS Data 20090902125619 0600 Am e r i c a n We s t An a l y t i c a l La b o r a t o r i e s 7- A g g - 0 9 Wo r k Or d e r 09 0 8 4 9 8 WO Ty p e St a n d a r d Re v i e w e d by on Sa m p l e ID Cli e n t Sa m p l e ID Da t e Co l l e c t e d Da t e R e c e i v e d Da t e Du e Ma t r i x Te s t Co d e Bi d MS SE L Su b St o r a g e 09 0 8 4 9 8 - O O 1 A MW - 3 8/ 2 5 / 2 0 0 9 55 4 0 0 A M 8/ 2 7 / 2 0 0 9 10 3 8 5 2 AM 9/ 1 1 / 2 0 0 9 Aq u e o u s 82 6 0 - W fl f l VO C P r i d g e 09 0 8 4 9 8 - 0 0 2 A MW - i 8/ 2 6 / 2 0 0 9 13 6 0 0 PM 9/ 1 1 / 2 0 0 9 82 6 0 - W fl VO C P r i d g e 09 0 8 4 9 8 0 0 3 A MW - 1 2 8/ 2 6 / 2 0 0 9 74 5 0 0 AM 9/ 1 1 1 2 0 0 9 82 6 0 W fl f l VO C F r i d g c WO R K OR D E R Su m m a r y Cl i e n t ID Co n t a c t Pr o j e c t Co m m e n t s DE N 10 0 St e v e La n d a u 3r d Qu a r t e r Gr o u n d Wa t e r Sa m p l i n g No Ha r d Co p i e s QC Le v e l LE V E L OENISONIAA MINES CHAIN OF CUSTODY Sheet of Samples Shipped to American West Analytical Lab 463 West 3600 South Salt Lake City Ut 84115 Contact Ryan Palmer or David Turk Ph 435 678 2221 roalmer@denisonmines.com dturk@denisonmines.com Chain of Custody/Sampling Analysis Request Project MW3 MW-i MW-12 Samplers Name Time Collected 554 1336 74 Samplers Signature TH TH TH 3rdQuarterGround Water Samping Tanner Holliday Sample ID Date Collected 8/25/2009 8/26/2009 8/26/2009 Laboratory Analysis Requested Please notify Ryan Palmer of Reciept tempature these samples Immediately Thank you Relin lied Bfignature dje../1Re in/.iished ySignature Date/Time 8/26/2009 1045 Date/Time Received Bysignature Re elved BySignature Date/Time Date/Time t/2T/oc In eQ La b Se t ID OP t CY RR Sa m p l e s We r e CO C Ta p e Wa s Co n t a i n e r Ty p e No ef i sh i p p e d By Pr e s y n t on Ou t e r Pa c k a g e YY e s No O N / A AW A L Su p p l i e d Pl a s t i c AW A L Su p p l i e d Cl e a r Gl a s s Ha n d De l i v e r e d Am b i e n t Un b r o k e n on Ou t e r pa c k a g e iY e s No N/ A AW A L Su p p l i e d Am b e r Gl a s s AW A L Su p p l i e d VO A / T O C / T r i a l s Am b e r Cl e a r He a d s O No He a d s p a c e l9 t h i l l e d Te m p e r a t u r e Pr e s e n t on Sa m p l e Ye s KN o ON / A Re c Br o k e n / L e a k i n g Ye s ON / A No a AW A L Su p p l i e n t a i n e r No t e s Un b r o k e n on Sa m p l e OY e s ON o c- 4 / A No t e s .- Pr o p e r l y Pr e s e r v e d le 5 No N/ A No t e s Re c Wi t h i n Ho l d MY e s No Dis c r e p a n c i e s Be t w e e n La b e l s an d CO C Ye s it o No t e s No t e s Bo t t l e Ty p e Pr e s e r v a t i v e Al l pH s OK Am m o n i a pH H2 S 0 4 CO D pH 2 H 2 5 0 4 Cy a n i d e PH 1 2 N a O H Me t a l s pH 2 H N 0 3 N0 2 N 0 3 pI I 2 1 1 2 S 0 4 Nu t r i e n t s pH 2 H 2 S 0 4 OG pH 2 H L Ph e n o l s pH H2 S 0 4 Su l f i d e pH 9N a O H Zn A C TK N pH H2 5 0 4 TO C pH 2 H 3 P 0 4 P0 4 pH H2 S O TP H pH 2 3 C Po u r sm a l l am o u n t of sa m p l e in th e sa m p l e lid Po u r sa m p l e fr o m Lid ge n t l y o v e r wid e ra n g e pH pa p e r Do No t dip th e pH pa p e r in th e sa m p l e bo t t l e or lid If sa m p l e is no t pr e s e r v e d p r o p e r l y lis t it s ex t e n s i o n an d re c e i v i n g pt- I in th e ap p r o p r i a t e co l u m n ab o v e Fla g CO G an d no t i f y cli e n t fo r fu r t h e r in s t r u c t i o n s Pla c e cli e n t co n v e r s a t i o n on CO G Sa m p l e s ma y be ad j u s t e d at c l i e n t re q u e s t Pr o c e d u r e AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Steve Landau Denison Mines 1050 17th Street 950 Denver CO 80265- TEL 303 389-4132 FAX 303389-4125 RE 3rd Quarter Ground Water Sampling Salt Lake City UT American West Analytical Laboratories received samples on 8/28/2009 for the analyses 84115 presented in the following report 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer All analyses were performed in accordance to The NELAC Institute protocols unless noted otherwise American West Analytical Laboratories is certified by The NELAC Institute in the following states Utah Colorado Idaho and Texas Certification document is available upon request If you have any questions or concerns regarding this report please feel free to call The abbreviation I5TI found in organic reports indicates surrogate compound that is intentionally added by the laboratory to determine sample injection extraction and/or purging efficiency The Reporting Limit found on the report is equivalent to the practical quantitaion limit PQL This is the minimumconcentration that can be reported by the method referenced and the sample matrix The reporting limit must not be confused with any regulatory limit Thank You Approved by Laboratory Director or designee Report Date 9/2/2009 Page of All analyses applicable te the CWA 5DWA and RCRA are perfnmaed in accnedaace tn NELAC pretncnls Pertinent sampling iafnrmatian is lacated an the attached COC This repnrt is prnvided far the eaclasive ase nf the addressee Privileges af sahseqaeat ate nf the name af this campany ar any member ef its staff nr repradartian af this repart in ceaneettea with the advertisement pramatiea ar sale nf aay pradacl er pracess er in reaneetian with the re-pablieatian ef this repart far aey pvrpnse ether thea far the addressee will be grunted ealy an cantact This campany accepts at respantibility except far the dna performance af inspectian and/ar analysis in gaad faith and arcardiag ta the rules af the trade tad af science Dear Steve Landau Lab Set ID0908550 Kyle Digitally tigvad Op Kyle Gram ON re Kyle Gmxx AWAL an AWAL emailhyln@nwal-lnbu ram r-UE ac Dale 20000002120043 -OttO Cl i e n t ID Co n t a c t Pr o j e c t Co m m e n t s Am e r i c a n We s t An a l y t i c a l La b o r a t o r i e s WO R K OR D E R Su m m a r y DE N 1 0 0 St e v e La n d a u 3r d Qu a r t e r Gr o u n d Wa t e r Sa m p l i n g No Ha r d Co p i e s QC Le v e l LE V E L 28 - A u g - 0 9 Wo r k Or d e r 09 0 8 5 5 0 WO Ty p e St a n d a r d Re v i e w e d by on Sa m p l e ID Cli e n t Sa m p l e ID Da t e Co l l e c t e d Da t e R e c e i v e d Da t e Du e Ma t r i x Te s t Co d e HI d MS SE L Su b Sto r a g e 09 0 8 5 5 0 - O O I A MW - l I 8/ 2 6 / 2 0 0 9 95 7 0 0 AM 8/ 2 8 / 2 0 0 9 10 1 8 4 0 AM Aq u e o u s fl f l f l no sa m p l e 09 0 8 5 5 0 - 0 0 2 A MW - 2 0 8/ 2 6 / 2 0 0 9 30 4 0 0 PM 9/ 4 / 2 0 0 9 82 6 0 - W JJ fl VO C F r i d g e 09 0 8 5 5 0 - 0 0 3 A MW - 2 2 8/ 2 6 / 2 0 0 9 20 2 0 0 PM 9/ 4 / 2 0 0 9 82 6 0 - W fl fl VO C F r i d g e 09 0 8 5 5 0 - 0 0 4 A MW - 7 0 9/ 4 / 2 0 0 9 82 6 0 - W fl f l YO c F r i d g e DENISONA MINES CHAIN OF CUSTODY Sheeti of Samples Shipped to American West Analytical Lab 463 West 3600 South Salt Lake City Ut 84115 Contact Ryan Palmer or David Turk Ph 435 678 2221 rpaIrner@denisonmThes.com dturkr denisonmines.com Chain of Custody/Sampling Analysis Request 8/Lc-7 _Ah Sz Project Samplers Name Samplers Signature aru Tanner Holliday aJUtVC Sample ID Date Collected Time Collected Laboratory Analysis Requested MWt.1-1-_------8/26/2069 957 TI4F- MW-20 8/26/2009 1504 THF MW-22 8/26/2009 1402 THF MW-70 8/26/2009 1402 TH Please notify Ryan Palmer of Reciepi tempature rn these samples Immediately Thank you Relinquished bySignature Date/Time 8/27/2009 1045 Received BySignature Date/Time Relinquished BySignature Date/Time Received BySignature Ok4 Dtefiime La b S e t I D 1a S G Sa m p l e s We r e CO C Ta p e Wa s Co n t a i n e r Ty p e No Re c $h i p p e d By .i J5 Pr e s e n t on Ou t e r Pa c k a g e XY e s No O N / A AW A L Su p p l i e d Pl a s t i c AW A L Su p p l i e d Cl e a r Gl a s s Ha n d De l i v e r e d Am b i e n t Un b r o k e n on Ou t e r pa c k a g e Ye s No O N / A AW A L Su p p l i e d Am b e r Gl a s s AW A L Su p p l i e d VO A / T O C / T O X Vi a l s LI Am b e r Cl e a r He a d s p a c e No He a d s p a c e Ch i l l e d Gr v Te m p e r a t u r e c3 .1 Re c Br o k e n / L e a k i n g Ye s To LI N/ A No t e s Pr e s e n t on Sa m p l e Ye s No AN / A Un b r o k e n on Sa m p l e No n AW A L Su p p l i e d Co n t a i n e r /2 . No t e s OY e s ON o gN / A Pr o p e r l y Pr e s e r v e d Ye s No N/ A No t e s No t e Dis c r e p a n c i e s Be t w e e n La b e l s an d CO C Ye s No t e s Re c Wi t h i n Ho l d XY e s LI No No t e s Bo t t l e Z p e Pr e s e r v a t i v e Al l pH s OK Am m o n i a . . pH H2 S 0 4 CO D Th E 2 B . O 4 Cy a n i d e pg 12 l a O . Me t a l s pH N0 3 ._ N0 2 N 0 3 p H 2 H 2 S O ._ _ _ ._ _ _ Nu t r i e n t s pH H7 S 0 4 -- OG pH 2 H C L Ph e n o l s pH H2 S 0 4 Su l f i d e pH 9N a O H ZI I A C .- _ - - . - TK N pH 2 H 2 S 0 4 ._ _ _ TO C pH 2 H 3 P O 4 -- TP O 4 pH 2 H 2 S O 4 ._ _ _ _ TP H pH 2 H C L Po u r sm a l l am o u n t of sa m p l e in th e sa m p l e lid Po u r sa m p l e fr o m Lid ge n t l y ov e r wid e ra n g e pH pa p e r Do No t dip th e pH pa p e r in th e sa m p l e bo t t l e or lid If sa m p l e is no t pr e s e r v e d p r o p e r l y lis t it s ex t e n s i o n an d re c e i v i n g pH in th e ap p r o p r i a t e co l u m n ab o v e Fla g CO C an d no t i f y cli e n t fo r fu r t h e r . i n s t r u c t i o n s Pla c e cli e n t co n v e r s a t i o n on CO O Sa m p l e s m a y be ad i u s t e d at c l i e n t re q u e s t Pr o c e d u r e -i i in 00 i3 .1 \0 CD tOEr Cc co t CD Co Co Co LA I J N A A R M S T R O N G 13 LB S OF 43 5 67 8 - 2 2 2 1 DE N I S O N MIN E S US A CO R P DW T 1 4 1 2 1 O 64 2 5 HW Y 19 1 BL A I 1 D I N G UT 84 5 1 1 SH I P TO AM E R I C A N WE S T AN A L Y T I C A L L A B 80 1 - 2 6 3 - 8 6 8 6 AM E R I C A N WE S T AN A L Y T I C A L LA B S 46 3 WE S T 36 0 0 SO U T H SA L T L A K E CI T Y UT 84 1 1 5 - 4 2 4 6 .t t X% M fr UT 84 1 9- 4 4 II l l I Hh I I U l II UP S NE X T DA Y AI R TR A Q U N G 1Z 8 4 1 6 7 1 0 1 9 7 3 4 8 8 9 3 EJ W N G P/P lB S 12 . 5 4 W0 0 5 7 0 93 . O A 0 7 1 2 0 0 9 TM OG r- - n UN UC DO 0- I It 0o W g o 3 VC D CD C D _P 2 - t rC 05 C o COCo 5E i EE ca n 0. 0 cC o g - u OC E W W Bc c S2 . a Co t O. 0 O 00 g Cl C0 CD Cc c -I CD U r0 Co CD CD .a aL a 00 CD Co Co Xa C -u Og C D CD CO O 01 CD CO CD CO -S c -0 -a Co CD CD CD . -u - J 2r DO D 2- a CD CO CD 00 a- -a CD Co CD Co CD CD Co CD CD Cr . i CD CD CD CD TabH Quarterly Depth to Water NAME Tanner Holliday MMHG 625.602 TIME WELL I.D 903 MW-S DEPTH TIME WELL I.D 106.73 807 TW4-5 933 TW4-25 DEPTH TIME WELL I.D DEPTH 56.34 46.42 DATE 9/10/2009 Start time 800 Finish Time 1317 1225 MW-i 66.28 817 MW-4 72.14 1234 PIEZ-i 63.05 911 MW-2 109.74 815 TW4-1 61.97 1239 PIEZ-2 15.09 839 MW-3 83.6 812 TW4-2 68.78 942 PIEZ-3 36.83 841 MW-3A 85.55 810 TW4-3 49.33 850 PIEZ-4 50.49 817 MW-4 72.14 821 TW4-4 63.79 847 PIEZ-5 44.98 922 MW-li 90.53 822 TW4-6 71.95 905 MW-12 108.6 816 TW4-7 68.52 857 MW-14 104.09 819 TW4-8 68.28 859 MW-iS 106.64 809 TW4-9 54.68 835 MW-17 77.23 806 TW4-10 56.75 1229 MW-18 71.41 813 TW4-ll 59.3 1236 MW-19 51.23 827 TW4-12 38.69 1307 MW-20 93.21 828 TW4-13 49.52 1301 MW-22 67.56 829 TW4-14 89.3 908 MW-23 116.26 804 TW4-i5 80.84 1217 MW-24 114.87 929 TW4-16 65.99 854 MW-25 76.13 927 TW4-17 77.45 804 MW-26 80.84 935 TW4-18 57.4 1222 MW-27 51.51 1317 TW4-19 69.91 1214 MW-28 77.89 802 TW4-20 71.14 914 MW-29 102.82 937 TW4-21 60.63 916 MW-30 77.57 801 TW4-22 55.83 925 MW-31 69.95 8S2 TW4-23 67.24 927 MW-32 77.45 800 TW4-24 56.55 Comments TabI Electronic Data sets in CSV Format to be emailed Dec 2009