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Home My WebLink AboutDRC-2009-000702 - 0901a06880107102NI44 DsnSon Minis USA Corp 1050 17th Strait Suits $50 DENISO MINES Fax 3033394125 SnSonminss.coi Sent VIA Federal Express February 25 2009 Mr Dane Finerfrock Executive Secretary Utah Radiation Control Board State of Utah Department of Environmental Quality 168 North 1950 West Salt Lake City UT 84114-4850 Re Transmittal of 4th Quarter 2008 Routine Groundwater Monitoring Report White Mesa Uranium Mifi GWDP No UGW370004 Dear Mr Finerfrock Enclosed are two copies of the White Mesa Uranium Mill Groundwater Monitoring Report for the 4th Quarter of 2008 as required under Parts I.F and of State of Utah Groundwater Discharge Permit No UGW370004 If you should have any questions regarding this report please contact me Yours very truly DENISON MINES USA CoRP Steven Landau Manager Environmental Affairs Cc Ron Hochstein David Frydenlund David Turk White Mesa Uranium Mill Groundwater Monitoring Report State of Utah Groundwater Discharge Permit No UGW370004 4th Quarter October through December 2008 Prepared by Denison Mines USA Corp Suite 950 1050 17th Street Denver CO 80265 February 2009 INTRODUCTION This is the Routine Groundwater Monitoring Report as required under Part I.F.1 of State of Utah Groundwater Discharge Permit No 370004 the Permit for the quarter of 2008 the Quarter for Denison Mines USA Corps DUSAs White Mesa Uranium Mill the Mill As required under Parts I.E 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 October through December 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 MW41 MW-14 MW-26 formerly TW4-15 MW-32 formerly TW4-l7 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-5 MW-i2 MW-iS MW-i7 MW-18 and MW-i9 ii Semi-annual Groundwater Compliance Monitoring Semi-annual Compliance Monitoring is performed in the wells listed below pursuant to Part I.E.I of the Permit MW-i MW-S MW-i7 MW-2 MW-12 MW-i8 MW-3 MW-iS MW-i9 iii Quarterly Sampling for All New Wells Quarterly groundwater quality samples were collected from new monitoring wells in accordance with Part I.H 4.of the Permit during the quarterly sampling event As such the following monitoring wells were sampled on those dates MW-20 MW-22 MW-23 MW-24 MW-25 MW-27 MW-28 WM-29 MW-3 MW-3l The sample collection dates for monthly samples occurred on October 13 October 30 and December 2008 respectively Routine quarterly semi-annual and accelerated quarterly sample collection occurred on November 5101112 and 13 2008 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 accept MW3A which is discussed in further detail in Section 2.6.3 below The accelerated monitoring samples were analyzed for the more limited specific parameters described in Section 2.4 of this report Groundwater Head Monitoring Depth to groundwater was measured in the following wells and/or 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 during the period of November 3-13 2008 depending on location ii Piezometers P-l P-2 P-3 P-4 and P-5 on November 25 2008 iii Existing monitoring well MW-4 on November 13 2008 and all of the temporary chloroform investigation wells on November 14 2008 iv In addition to the above depth to water measurements are routinely observed in conjunction with sampling events for all wells sampled during monthly quarterly and semi-annual monitoring efforts regardless of the sampling purpose 2.2 Field Data Sheets Attached under Tab are copies of all field data sheets where field data were recorded in association with the quarterly effort on Nov 4-13 2008 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 October 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 December 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 There are four sets of laboratory analytical results included in this Report Samples collected for the October accelerated sampling were reported on November 11 and 12 2008 Tab Also included under this Tab are the results of duplicate sample of MW-32 MW-65 10-13-08 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 10-14-08 Samples collected for the December accelerated sampling were reported on January 2009 Tab Also included under this tab are the results of analyses for duplicate sample of MW-32 MW-65 12-9-08 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 An analyses of field blank was included with the monthly sampling MW-60 12-11-08 Samples collected for the 4th Quarter and Accelerated Quarterly samples under the Permit were reported in three data sets dated December 11 and 31 2008 Tab Also included under Tab are the results of analyses for duplicate samples of MW-32 and MW-22 MW-65 11-5-08 and MW-70 11-12-08 respectively field blank was collected for the quarterly sampling episode MW-60 11-13-08 Note Copies of laboratory QAQC 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 currently in the process of working with the Utah Division of Radiation Control and its consultant URS to establish background including the mean plus second standard deviation for all of the constituents being sampled under the Permit Toward this end report entitled Background Groundwater Quality Report Existing Wells For Denison Mines USA Corp White Mesa Uranium mill Site San Juan County Utah Intera mc 2006 was transmitted to UDEQ on December 29 2006 In response to UDEQs review revised report was provided to UDEQ on 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 transmiffed 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 Until such time as background is established the Permit requires that constituent concentrations in each monitoring well shall not exceed the Groundwater Compliance Limits GWCLs set out in Table 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 Exceedances for the Quarterly and Semi-Annual Sampling Monitoring Well Water Class Constituent GWCL ugfL Sample Result ugIL MW-3_Class_III Manganese 400 813 Uranium 15 23.8 Selenium 25 26.5 MW-5_Class_Ii Manganese 200 230 MW-12_Class_II Uranium 15 16.9 MW-14_Class_Ill Uranium 15 63.4 Manganese 400 2150 MW-15_Class_III Selenium 25 111 Uranium 15 47.0 Well Constituent Class GWCL ugL Sample Result ugIL .____________________ Uranium 15 26.0 Uranium 7.5 41.0 Thallium 0.5 1.43 Flouride 1.0 1.1 Nitrate 2.5 2.51 Ill Manganese 400 1260 Uranium IS 54 Chloroform 35 950 Dichlormethane 2.5 17 Ill Manganese 400 5390 Nickel 50 66 Iron 5500 8770 Cadmium 2.5 2.86 separate Notice of these exceedances has been submitted to the Executive Secretary on January 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 comnence 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 January 2009 Well Constituent Class Normal Frequency of Sampling Accelerated Frequency of Sampling Commencement of Accelerated Momtormg Tetrahydroffiran Semi-Annual Quarterly Quarter 2005 Manganese Semi-Annual Quarterly Vt Quarter 2006 Manganese Semi-Annual Quarterly 15t Quarter 2006 Selinium Semi-Annual Quarterly 3rd Quarter 2006 Thallium Semi-Annual Quarterly 4t Quarter 2005 Uranium Semi-Annual Quarterly 4th Quarter 2005 Tetrahydrofliran Semi-Annual Quarterly Quarter 2006 Manganese Semi-Annual Quarterly Quarter 2005 Fluoride Semi-Annual Quarterly 4th Quarter 2005 Tetrahydrofliran Semi-Annual Quarterly Quarter 2006 Uranium Semi-Annual Quarterly Quarter 2005 Tetrahydrofbran Semi-Annual Quarterly Quarter 2005 Well Class Constituent Normal Frequency of Sampling Accelerated Frequency of Sampling Commencement of Accelerated Monitoring MW-14_Class_III Manganese Quarterly Monthly June 2005 Uranium Quarterly Monthly June 2005 MW-15_Class_III Selenium Semi-Annual Quarterly 4tI Quarter 2005 Uranium Semi-Annual Quarterly 4t15 Quarter 2005 MW-17_Class_III Uranium Semi-Annual Quarterly 4th Quarter 2005 Thalium Semi-Annual Quarterly 1st Quarter 2006 MW-18_Class_II Thallium Semi-Annual Quarterly Quarter 2005 Uranium Semi-Annual Quarterly 4th Quarter 2005 Manganese Semi-Annual Quarterly January 2008 Class Ii Fluoride Semi-Annual Quarterly 1st Quarter 2006 Selenium Semi-Annual Quarterly 4th Quarter 2005 Thallium Semi-Annual Quarterly Vt Quarter 2006 Uranium Semi-Annual Quarterly 4th Quarter 2005 Nitrate Semi-Annual Quarterly 1st Quarter 2009 Manganese Quarterly Monthly June 2005 Uranium Quarterly Monthly June 2005 Chloroform Quarterly Monthly June 2005 Dichloromethane Quarterly Monthly September 2005 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-3 through eight quarters of sampling pursuant to Part I.H.4 of the Permit has been evaluated and reported to UDEQ under the title Background Groundwater quality Report New Wells For the Denison Mines USA Corp White Mesa Uranium Mill Site San Juan County Utah Intera 6/1/07 and its April 30 2008 Addendum This report is currently under review at UDEQ and as such the GWCLs for these wells have not been determined and included in the Permit Accordingly it is premature to determine whether or not any of the sampling results for this Quarter exceed any Permit limits for any constituents in those wells 2.4 Laboratory Results Accelerated Monitoring The analytical results for the accelerated monitoring of the various constituents in certain monitoring wells for the months of October and December 2008 are provided at Tabs and respectively The results of the 4th Quarter of 2008 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 gfL Sample Event Sample Resultus MW-i_Class_ii Tetrahydrofliran 11.5 Qtr 2005 85 4thQtr200s 58 Pt Qtr 2006 48 2nd Qtr 2006 60 3rdQtr2006 26 4thQtr2006 16 1tQtr2007 14 Qtr 2007 NA 3rd Qtr 2007 15 4th Qtr 2007 16 Pt Qtr 2008 2.0 Qtr 2008 2.6 3rd Qtr 2008 3.2 4th Qtr 2008 Manganese 200 4th Qtr 2005 215 Pt Qtr 2006 220 2nd Qtr 2006 230 3rdQtr2006 216 4thQtr2006 198 Pt Qtr 2007 229 Qtr 2007 NA 3rdQfr2007 30 4th Qtr 2007 15 Pt Qtr 2008 10 Qtr 2008 66 3rdQfr2008 70 4th Qtr 2008 68 MW-3_Class_III Thallium 1.00 3rd Qtr 2005 1.60 4thQtr200s 1.14 1St Qtr 2006 1.13 Qtr 2006 0.99 3rdQft2006 1.11 4thQfr2006 1.16 1St Qtr 2007 0.99 Qtr 2007 NA 3rdQtr2007 1.19 4thQfr2007 1.15 1St Qtr 2008 0.90 Qtr 2008 0.86 3rd Qtr 2008 0.85 4th Qtr 2008 0.93 Uranium 15 3rd Qtr 2005 35.90 4th Qtr 2005 30.90 15t Qtr 2006 39.1 Monitoring Well Water Class Constituent GWCL ugfL Sample Event Sample Result ugIL MW-3 Contd Uranium 15 Qtr 2006 27.6 3rd Qtr 2006 32.0 4thQft26 28.2 l5tQtr2008 35.6 Qtr 2007 30.2 2nd Qtr 2007 NA 3rd Qtr 2007 17.4 4th Qtr 2007 39.4 1tQtr2008 35.6 Qtr 2008 ND 3rd Qtr 2008 28.5 4th Qtr 2008 23.8 Manganese 400 4thQft2005 732 1st Qtr 2006 1.640 Qtr 2006 631 3rd Qtr 2006 1370 4thQft2006 682 ist Qtr 2007 848 Qtr 2007 NA 3rdQfr27 199 4thQfr2007 1950 itQtr2008 1330 2mQtr2008 810 3rd Qtr 2008 960 4thQfr2008 813 Selenium 25 2nd Qtr 2006 25.4 3rdQfr2006 16.8 4th Qtr 2006 27.9 Qtr 2007 20.1 Qtr 2007 NA 3rdQfr27 33.6 4th Qtr 2007 8.9 1tQtr2008 13.8 2d Qtr 2008 20.1 3rd Qtr 2008 19.2 4th Qtr 2008 26.5 Tetrahydroffiran 23 2nd Qtr 2006 26 3rd Qtr 2006 46 4thQfr2006 ii l5tQtr2007 11 Qtr 2007 NA 3rd Qtr 2007 ND 4thQfr2007 ND Qtr 2008 6.5 Qtr 2008 2.0 3rd Qtr 2008 2.0 4th Qtr 2008 2.0 MW-5 Class II Manganese 200 Qtr 2005 250 4th Qtr 2005 280 Pt Qtr 2006 259 Qtr 2006 228 3rd Qtr 2006 237 Monitoring Well Water Class Constituent GWCL ugIL Sample Event Sample Result ugfL MW-5 Contd Manganese 200 4th Qtr 2006 228 1tQtr2007 281 2x1 Qtr 2007 NA 3rdQft27 134 4thQfr2007 142 Vt Qtr 2008 203 2WQfr208 258 3rdQ28 298 4thQfr2008 230 Fluoride 1.00 mg/L 2n Qtr 2005 1.3 mg/L 4th Qtr 2005 1.0 mg/L itt Qtr 2006 0.9 mg/L Qtr 2006 1.0 mg/L 3rd Qtr 2006 0.9 mgL 4thQfr26 1.1 mg/L 1tt Qtr 2007 1.1 mg/L Qtr 2007 NA 3rdQft2007 1.2 mg/l 4thQfr2007 1.0mg/L 1st Qtr 2008 1.0mgIL Qtr 2008 0.9mg/L 3rd Qtr 2008 1.0mg/L 4th Qtr 2008 1.0mg/L Tetrahydrofliran 11.50 4th Qtr 2005 13 VtQtr2006 10 Qtr 2006 7.8 3rd 2006 ND 4th Qtr 2006 ND VtQtr2007 ND Qtr 2007 NA 3rdQfr2007 ND 4thQfr2007 10 itt Qtr 2008 9.2 2Qtr 2008 10 3rd Qtr 2008 6.6 4th Qtr 2008 8.5 MW-12_Class_III Manganese 400 2nd Qtr 2005 420 41h Qtr 2005 27 VtQtr2006 17 3rd Qtr 2006 290 4th Qtr 2006 92 Vt Qtr2007 279 Qtr 2007 NA 3rd Qfr 2007 57 4th Qtr 2007 60 itt Qtr 2008 29 Qtr 2008 32 3rd Qtr 2008 19 4th Qtr 2008 16 Uranium 15 2d Qtr 2005 15.30 4th Qtr 2005 16.50 10 Monitoring Well Water Class Constituent GWCLun Sample Event Sample Resultun MW-12 Contd Uranium 15 Pt Qtr 2006 ND Qfr 2006 20.9 3rd Qtr 2006 23.5 4thQfr2006 19.8 PtQtr2007 19.4 Qtr 2007 NA Qtr 2007 8.68 4th Qtr 2007 19.2 1Qtr2008 16.8 Qtr 2008 16.7 3rdQfr2008 17.8 4thQfr2008 16.9 Tetrahydrofuran 23 Qtr 2005 24 4th Qtr 2005 12 ltQtr2006 ND Qtr 2006 16 3rd Qtr 2006 18 4th Qtr 2006 ND ltQtr2007 38 Qtr 2007 NA 3rdQft2007 ND 4th Qtr 2007 ND 1st Qtr 2008 2.0 21111 Qtr 2008 3.0 3Qtr 2008 2.0 4th Qtr 2008 2.0 MW-14 Class II Manganese 400 1st Qtr 2005 1860 June2005 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 April2006 2100 May2006 2000 June2006 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 April2007 2020 May2007 1940 June2007 NA 11 Monitoring Well Constituent Water Class GWCL ug/L Sample Result Sample Event ugfL MW-14 Contd Manganese 400 July 2007 NA Aug 2007 2010 Sept 2007 2060 Oct 2007 2120 Nov 2007 2380 Dec 2007 2290 Jan 2008 2200 Feb 2008 2080 Mar 2008 2280 April2008 2160 May2008 2420 June2008 2290 July2008 2150 Aug 2008 2020 Sept 2008 2030 Oct.2008 2110 Nov 2008 2150 Dec 2008 2300 Uranium 15 15t Qtr 2005 65.1 June2005 58.9 July2005 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 May2006 70.3 June2006 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 April2007 18.8 May2007 62.4 June 2007 NA July2007 NA August 2007 ND September 2007 70.5 October 2007 68.6 November2007 61.6 December 2007 60.7 January 2008 65.1 February 2008 64.1 12 Monitoring Well Water Class Constituent GWCL ugfL Sample Event Sample Result ngfL MW-14 Contd Uranium 15 March 2008 ND April2008 61.8 May2008 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 MW-iS Class Ill Selenium 25 Qtr 2005 79 4th Qtr 2005 92.5 PtQtr2006 102 2UdQft2006 117 3rdQfr2o06 112 4thQfr2006 112 Pt Qtr 2007 89.6 Qtr 2007 NA 3rd Qtr 2007 94 4th Qtr 2007 94 PtQtr2008 113 2Qtr 2008 106 3rdQfr2008 118 4thQ2008 ill Uranium 15 2nd Qtr 2005 45.3 4th Qtr 2005 47.7 Pt Qtr 2006 50.4 Qtr 2006 47.8 3rdQfr2006 50.1 4th Qtr 2006 51.6 Pt Qtr 2007 46.5 Qtr 2007 NA 3rd Qtr 2007 28.6 4thQft2007 51.0 Pt Qtr 2008 48.3 2nd Qtr 2008 43.9 3rd Qtr 2008 45.7 41h Qtr 2008 47.0 MW-17_Class_III Uranium 15 2nd Qtr 2005 23.4 4th Qtr 2005 31.2 PtQtr2006 28.2 2nd Qtr 2006 32.2 3rd Qtr 2006 30.6 4th Qtr 2006 30.2 Pt Qtr 2007 23.4 Qfr 2007 18.2 3rdQ2007 20.1 4thQfr2007 31.0 Pt Qtr 2008 28.3 2It Qtr 2008 29.4 3rd Qtr 2008 28.9 13 Monitoring Well Water Class Constituent GWCL uWL Sample Event Sample Result MW-17 Contd Uranium 15 4th Qtr 2008 26.0 MW-iS_Class_II Thallium 0.5 2nd Qtr 2005 1.0 4th Qtr 2005 0.95 1st Qtr 2006 1.46 2R Qtr 2006 1.3 3rdQfr2006 0.83 4thQfr26 1.01 PtQtr2007 1.85 Qtr 2007 NA 3rd Qtr 2007 0.96 4thQft2007 0.89 l5tQtr2008 1.11 Qtr 2008 1.34 3rd Qtr 2008 1.33 4th Qtr 2008 1.43 Uranium 2nd Qtr 2005 39 4thQfr2005 39 Pt Qtr 2006 42.6 Qtr 2006 32.2 3rd Qtr 2006 39.6 4th Qtr 2006 42.2 1st Qtr 2007 46.9 Qtr 2007 NA 3rd Qtr 2007 36.5 4th Qtr 2007 39.2 1st Qtr 2008 42.4 Qtr 2008 44.8 3dQfr2008 41.4 4thQ208 41.0 Manganese 200 Qtr 2008 154 2Qtr2008 119 3rdQfr2008 136 MW-19 Class II 4th Qtr 2008 125 Fluoride 1.0 mgIL 4th Qtr 2005 1.1 mg/L Qtr 2006 1.1 mg/L Qtr 2006 1.1 mg/L 4thQft2006 1.3 mg/L 1st Qtr 2007 1.4 mg/L Qtr 2007 NA 3rd Qtr 2007 1.3mg/L 4th Qtr 2007 1.1 mg/L 1st Qtr 2008 1.1 mg/L Qtr 2008 1.1 mg/L 3rd Qtr 2008 1.1mgL 4th Qtr 2008 1.1mgIL Selenium 12.5 2nd Qtr 2005 18 4thQfr25 12.3 1tQtr2006 14.3 Qtr 2006 3rd Qtr 2006 4th Qtr 2006 12.0 12.0 11.2 14 Monitoring Well Water Class Constituent GWCL ug/L Sample Event Sample Resultun MW-19 Contd Selenium 12.5 1st Qtr 2007 11.1 Qtr 2007 NA 31dQfr2007 11.9 4thQfr2007 10.8 1t Qtr 2008 10.6 Qtr 2008 10.2 Qtr 2008 9.2 4th Qtr 2008 9.9 Thallium 0.5 4th Qtr 2005 0.57 ltQtr2006 ND Qtr 2006 0.7 3rd Qtr 2006 0.55 4th Qtr 2006 0.68 1StQfr2007 NT Qtr 2007 NA 3rd Qtr 2007 0.53 4th Qtr 2007 0.52 1st Qtr 2008 0.52 Qtr 2008 ND 3rdQfr2o08 ND 4th Qtr 2008 ND Uranium 7.5 Qtr 2005 11.6 4thQft2005 11.3 ltQtr2006 12.8 2Qtr2006 11.5 Qtr 2006 8.52 4thQ2006 10.1 1st Qtr 2007 9.37 Qtr 2007 NA 3rd Qtr 2007 7.76 4th Qtr 2007 7.53 ltQtr2008 7.32 Qtr 2008 6.76 3rd Qtr 2008 6.8 4thQfr200g 6.51 MW-26_Class_II Manganese 400 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 June2006 1300 July 2006 95 Aug 2006 902 15 Monitoring Well Water Class Constituent GWCL ugIL Sample Event Sample Result ugfL MW-26 Contd Manganese 400 Sept 2006 1330 Oct 2006 1610 Nov.2006 1500 Dec 2006 1080 Jan 2007 769 Feb.2007 979 Mar.2007 1130 April 2007 1410 May 2007 910 June 2007 1230 July2007 1280 Aug 2007 728 Sept 2007 NS Oct.2007 1190 Nov 2007 1150 Dec.2007 1410 January 2008 853 February 2008 1330 March 2008 1390 April2008 1010 May2008 1170 June2008 1130 July2008 1110 Aug.2008 1180 Sept.2008 1140 Oct 2008 1550 Nov 2008 1260 Dee 2008 1120 Uranium 15 Vt Qtr 2005 22.4 June2005 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 April2006 14 May2006 2.5 June2006 24.6 July2006 17.6 Aug 2006 10.5 Sept 2006 23.0 Oct 2006 34.7 Nov 2006 32.6 Dec 2006 20.9 Jan 2007 22.6 Feb.2007 44.2 Mar 2007 42.8 April 2007 36.4 16 Monitoring Well Water Class Constituent GWCL ugIL Sample Event Sample Result ugfL MW-26 Contd Uranium 15 May 2007 119 June 2007 24.5 July2007 38.6 August2007 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 March2008 46.3 April2008 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 Chloroform 35 Qtr 2005 230 June2005 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 June2006 260 July2006 7800 Aug 2006 980 Sept 2006 1200 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 October2007 820 November 2007 1400 December 2007 1400 17 Monitoring Well Water Class Constituent GWCL ugIL Sample Event Sample Result ugfL MW-26 Contd Chloroform 35 January 2008 830 February 2008 580 March2008 1300 April2008 1600 May2008 1200 June2008 2000 July 2008 1600 Aug.2008 1300 Sept 2008 460 Oct 2008 630 Nov 2008 950 Dec 2008 1300 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 Nov 2006 15 Dec 2006 2.6 Jan 2007 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 Dichloromethane 2.5 October 2007 1.2 November 2007 18 December 2007 22 January 2008 15 February 2008 15 March2008 66 April 2008 47 May2008 33 June2008 110 July2008 82 Aug 2008 84 Sept.2008 11 Oct 2008 9.4 18 Monitoring Well Water Class Constituent GWCL ugIL Sample Event Sample Result ugfL MW-26 Contd Dichloromethane 2.5 Nov 2008 17 Dee 2008 60 Tetrahydrofuran 23 4th Qtr 2005 55 Jan 2006 ND Feb 2006 ND Mar 2006 ND April2006 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 May 2007 ND June 2007 ND July2007 ND August 2007 ND September 2007 NS October 2007 ND November 2007 ND December 2007 ND MW-32 Cadmium 2.5 itt Qtr 2005 23.8 June2005 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 April2006 2.96 May2006 1.84 June2006 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 19 Monitoring Well Water Class Constituent GWCL Sample EventngIL Sample Result ugIL MW-32 Contd Cadmium 2.5 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 February2008 NT March 2008 1.90 April2008 3.0 May2008 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 Manganese 400 Pt Qtr 2005 3740 June2005 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 April2006 5070 May 2006 4840 June2006 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 20 Monitoring Well Water Class Constituent GWCL ugfL Sample Event Sample Result ugIL MW-32 Contd Manganese 400 February 2008 5010 March 2008 5660 April2008 5500 May2008 5810 June2008 5400 July2008 5160 Aug 2008 5240 Sept.2008 5130 Oct 2008 5550 Nov 2008 5390 Dec 2008 5540 Nickel 50 1st Qtr 2005 71.0 June2005 54.0 July2005 610 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 July2006 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 July2007 85 August 2007 65 September 2007 62 October 2007 67 November2007 57 December 2007 66 January 2008 62 February 2008 59 March2008 59 April2008 61 May2008 64 June2008 62 July2008 65 Aug 2008 66 Sept 2008 60 21 Monitoring Well Water Class Constituent GWCL ugIL Sample Event Sample Result ugIL MW-32 Contd Nickel 50 Nov 2008 Oct 2008 Dec 2008 66 62 59 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 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 OC Checks The following QC samples were generated by Mill personnel and submitted to the Analytical Laboratory in order to assess the quality of data resulting from the field sampling program October Monthly Accelerated Sampling -One duplicate sample of MW-32 MW-65 collected 10/13/08 -One field blank MW-60 collected 10/14/08 -One trip blank provided by the Analytical Laboratory and sent with the samples received by the Analytical Laboratory on 10/15/08 December Monthly Accelerated Sampling -One duplicate sample of MW-32 MW-OS collected 12/09/08 -One field blank MW-60 collected 12/09/08 -One trip blank provided by the Analytical Laboratory and sent with the samples received by the Analytical Laboratory on 12/11/08 November Quarterly/Accelerated Sampling Two duplicate samples of MW-32 and MW-17 MW-Os MW7O collected 11/5/08 and 11/12/08 respectively One field blank MW-60 collected 11/13/08 -Three trip blanks provided by the Analytical Laboratory and sent with the 22 samples received by the Analytical Laboratory on 11/6/08 11/7/08 and 11 14/08 These QC samples were sent blind to the Analytical Laboratory and analyzed for the same parameters as permit-required samples 2.6.2 Analytical Laboratory QA/OC Procedures The Analytical Laboratory has provided summary reports of the analytical quality control/quality assurance QA/QC measurements necessary to maintain conformance with NELAC certification and reporting protocol The Analytical Laboratory QA/QC Summary Reports including copies of the 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 QA 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 QA/QC 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 QA/QC requirements established in the Groundwater Monitoring Quality Assurance Plan were being adhered to and that the SOPs were implemented Results from field QC checks October Sampling The results of duplicate QC checks for the October 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 as well There were no qualifications attached to these data by the laboratory All samples were received within acceptable temperature specification and holding time requirements were adhered to 23 Table 4-QC Evaluation October Sampling Event Constituent Duplicate Evaluation MW-32 Dup MW-65 RPD Cadmium 2.53 2.44 3.o2 Iron 8959 9460 -8.96 Manganese 5550 5630 -1.43 Nickel 62 63 -1.6 Gross Alpha 1.8 1-0.5 1.6 1-0.5 ii December Sampling The results of duplicate QC checks for the December 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 as well There were no qualifications attached to these data by the laboratory All samples were received within acceptable temperature specification and holding time requirements were adhered to Table 5-QC Evaluation December Sampling Event Constituent Duplicate Evaluation MW-32 Dup Mw-65 RPD Cadmium 2.61 2.61 Iron 9020 8870 1.68 Manganese 5.540 4540 19.84 Nickel 59 60 -1.68 Gross Alpha 5.8 1-0.8 4.7 1-0.8 iii November Quarterly/Accelerated Sampling The results of duplicate QC checks for the quarterly sampling indicated that one of the Relative Percent Difference RPD values minimally exceeded the 20%RPD standard i.e Thallium MW-l7 vs MW-70 RPD 24.79%Values for cadmium iron and zinc in the MW-70 duplicate sample indicated trace amounts of those metals while the original MW-32 sample yielded less than detectable concentrations for those constituents See Table Well MW-65 the duplicate for well MW-32 indicated trace amount of Tetrahydrofuran just above the detection limit whereas the original sample showed THF at less than the detection limit This is marked improvement over previous periods during 2008 i.e 15t 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 24 Table 6-QC Evaluation 4th Quarter 2008 Sampling Event Constituent MW-32 MW-65 %RPD MW-17 MW-70 %RPD Carbonate ND ND ND ND Bicarbonate 412 410 0.48 461 483 -4.66 Calcium 531 528 0.57 385 373 3.17 Chloride 25 25 32 33 -3.08 Fluoride 0.2 0.2 0.3 0.3 Magnesium 223 224 0.45 188 183 2.70 Nitrogen-Ammonia 0.86 0.83 3.56 ND ND Nitrogen-Nitrate ND ND 0.70 0.70 Potassium 14.5 14.4 2.08 12.6 12.6 Sodium 228 226 0.88 642 646 -0.62 Sulfate 2450 2460 -0.41 2530 2540 -0.39 Lab pH 6.62 6.60 0.30 7.10 7.43 -4.54 TDS 3820 3790 0.79 3980 4030 -1.25 Arsenic ND ND ND ND Beryllium ND ND ND ND Cadmium 2.86 2.67 6.87 ND 0.51 NA Chromium ND ND ND ND Cobalt 50 50 ND ND Copper ND ND ND ND Iron 8770 8790 -0.23 ND 56 NA Lead ND ND ND ND Manganese 5390 5470 -1.47 92 94 -2.15 Mercury ND ND ND ND Molybdenum 11 II ND ND Nickel 66 66 ND ND Selenium ND ND 7.9 8.1 -2.50 Silver ND ND ND ND Thallium ND ND 0.53 0.68 -24.79 Tin ND ND ND ND Uranium 2.55 2.72 -6.45 26.0 26.5 1.90 Vanadium ND ND ND ND Zinc 136 136 ND 33 NA Gross Alpha 3.7 1-1.0 4.4 1-1.1 0.5 1-0.3 0.3 1-0.3 Acetone ND ND ND ND Benzene ND ND ND ND Carbon tetrachioride 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 2.4 NA 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 ofAnalytical Laboratoiy QA/QC Analysis The QA Manager reviewed the Analytical Laboratorys QAIQC Summary Reports and made the following conclusions 25 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-Cl Fluoride A4500-F Nitrogen Ammonia as A4500-NH3 Nitrogen Nitrate Nitrite as E353.2 Sulfate A4500-504 TDS A2540C Metals other than iron E200.8 Gross Alpha E900.1 VOCs 5W8260B 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 or in those instances where the result was less than the re-established RL the RL was still less than the GWCL vi The information from the Laboratory QA/QC 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 26 Corrective Actions During the 3t1 Quater report period it was noted that field blapk de-ionized water continued to yield trace volatile organic presence i.e Chlorofonn 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 approximately 30 ppb Concurrently these low concentrations of Chloroform were found in the 4th Quarter field blanks as well During the QA review for the preparation of this report it was discovered that in fact what was purchased is the resin used to treat the water and not the water itself Accordingly for the Quarter 2009 samples of pretreated water treated water and the field blanks themselves will be analyzed to further isolate the cause of this low level contaminant source 2.7 Electronic Data Files and Format DUSA has provided to the Executive Secretary an electronic copy of all laboratory results far 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 prepard by Denison Mines USA Corp on February 24 2009 DENISON 41NE$USA CORP 27 By Vice President Regulatory Affairs and Counsel 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 including the possibility of fine and impriso ent knowing violations Davi Fry nlund Vice President Regulatory Affairs and Counsel Denison Mines USA Corp 28 -I BO U N D A R Y // II If /I 01 W 4 - 1 3 OT W 4 - 1 7/ -- OT W 4 - 1 4 SC A L E IN FE E T EX P L A N A T I O N mo _ tw n p o i a i y pe w h e d m o n M o i g we l wit c i i e po n d T3 7 S T3 8 S _d zo m e I a r mo wa N il e d wa N MS a d Ap f l L 2 0 0 5 HY D R O CH E M IN C SI T E PL A N AN D P E R C H E D WE L L LO C A T I O N S WH I T E ME S A SI T E ne w te i r o r a i y mo t k i g wS I in s l a l e d Ma v 2 0 0 7 Qo c a l i o n s ap p r o x i m a t e ft / 7 1 8 0 0 0 / n o v O 8 / w e l l o c . s r t Mill Groundwater Discharge Permit Groundwater Monitoring QualIty Assurance Plan QAP Redox Potential Eli_______ I- Date 2.25.07 Revision Page4Oof4l AflACIBIMIENfl WifiTE MESA URANIUM MILL FJI1ELD DATA WORKSEIIEET FOR GROU1MD WATER Description of Sampling Event 4Th Quar4er Cnotw.L bdcr Sampler Location well name ciw MW Name and iOitialtnnre Date and Time for Purging 1-4-OS and Sampling if different_________________ Well Purging Equip Used Lpump or_bailer Well Pump if other than Rennet SamplingEvent 1r Ænarleur-rov.n4 W4e Prey Welt Sampled in Sampling Eventj%._t pHBuffer7.O 7.0 pHfluffer4.O Ll.C Specific Conductance IQ1 uMHOS/cm Well Depth Depth to Water Before Purging oC .S Casing Volume Well .653h Well IW .36711 Coaduttnce avg 70j pH of Water ivg ..Z\ Well Water Temp avg .0 Redox Potential 1311 15 Turbidity 494 Weather Cond Ctoa/LA -1k Extl Amb Temp.prior to sampling event ii ne 132b GliPurged gg Conductance 17 t7 Thne ThUG GaLPurged Conductance 14.gS PTM pIL 7.33 Temperature Temperature Redox Potential Eli Ta Turbidity C15 Redox Potential EhI Turbidity Time AX Gal Purged Conductance 17 4.75 11_7.30 Temperature 13 C1 Time 14CC Conductance Gal Purged S4 cj pH 7.31 Temperature 13 Redox Potential Eli 177 -F MIII Groundwater Discharge Permit Date IL 17.05 Revision GrnuedwaterMoflitoliag Quality Assurance Plan QAP Page 41 of 41 Turbsdtty___________________________ Volume of Water Purged gppjg Rate Calculation Plow Rate 03 in gpm Time to evacuate two casing volumes s/so ______________T2VIQ liLt Mn Numberof casing volumes evacuated if other than two____________________________ If well evacuated to dryness number of gallons evacuate.d___________________________ Name of Certified Analytical Laboratory if other Than Energy Lab LI Ser cF Va Amciccn Wt4 LoJxtunple Taken drcle Samiule Volume Indicate if oilier lISI aS snecifled below i$tere4 circle Preservative Added fcfrie VOCs CY Sx4Oml dtJ Nutrients lOOmI E2S04 EÆavyMetals All Other Non- Radiologics 250th1 250 ml th103 ct No Preservative Added OrossAlpha 1000ml ZN J12S04 9N Other specify 4ggtd Saniple volume If preservative is used Specify Type and Quantity of Preservative Comments_ArruteJ ti ctkk for PIMW Stwsjshpij encn- .r 114 ralnLdkls QA lL.lII LCck sflc \-gtg- PrArqsre flnn.r I4alLoLt btoan d-flog tall sc4 pre Puscck scvvplc sU3er C.tctr tuJ.ict Puct WerMttr Mill C-rounctwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP Date 2.25.07 Revision Page 40 of 41 Time.PFs4S Conductance Gal Purged 97 pU Temperature 57 Redox Potential Rh 353 i-i t4t Time ogo Gal.Purged 21 45 conductance C93 mtwe Redox Potential Rh 33 lu.rb ________ AflACIIMENT WifiTE MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUND WATER Description of Sampling Event t1Th Quarer rocn.A tAJater Sampler Location well name Mv Name and initials tnnre ri4 Date and Time for Purging it t-and Sampling if different Well Purging Equip Use Lpump or ..jailer Well Pump if other than Bennet._..g.fl_.. Sampling Event 4T Un%tr rovrn4 lJislce Prey Welt Sampled in Sampling Eventf/ pHBufferl.O 7.0 pHBuffer4.O I4.Q Specific Conductance uMHOS/cm Well Depth Depth to Water Before Purging oA Casing Volume Well Si .653k Well .367k Conductance avg pH of Water vg Well WaterTemp.avg S.L1/RedoxPotentialEhSQ Turbidity 03 Weather Cond CACLAC 4nSL Extl Amb Texnp.prior to sampling event Time.fliO GEl Purged Conductance__________________ -z pH Temperature 11.CJ\ Redox Potential Rh Turbidity c3 Time O3 3a1.Purged Conductance_____________________ -7 pH Temperature .3 Redox Potential Rh Turbidity lviii Groundwater Discharge Permit Groundwater Nonitothig Quality Msurauce Plan QAP Date 11.17.06 Revision Page 41 of 41 Volume of Water Purged Turbidity ping Rate Calculation Plow Rate Q3 in gpm 5/60 _____.33 Time to evacuate two casing volumes 2V T2V/Q $-Vr1 Number of casing volumes evacuated if other than two_ if well evacuated to dryness number of gallons evacuatd_ Name of Certified Analytical Laboratory if Other Than Energy Labs iJ 1.Stir Vcc Amctc w4 Lb gSanl Qp Taken circle SinoleVohsme indiSte if other hail aS specified belw Filtered circle Preservative Added cle VOCs 3x40m1 fl RCL Nutrients HØavyMetals 10Dm 250th1 Ri IV $O4 liMO3 All Other Non- Radiologics GrossAipha 25Dm 100Dm No Preservative Added 112504 tN Other specify 4etQe4sZrenb Sample volume ifapreservativeisused Specify Type and Quantity of Preservative .4 crliq flaaer orest4 far nt IJeII Vat zmnw1k -Ltctn wf P-041t ca of c4ftfW o4i tJ%ert CLco.r ratt.tjk FSLMC4JWerMwtteoek.d cclk rnmmentc Av.rui.A nn Mill Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP Date 2.25.07 Revision Page 40 of AflACEEMENT 11 WIH MESA URANIUM MLL MELD DATA WORKSREfl FOR GROUND WATER Description of Sampling EventJtTh Q4 rosanc UJcJer Sampler Location well name MW Name and initials t. Date and Time for Purging Vt aoe and Sampling if different iq Well Purging Equip Useck Lpump or bailer Well Pump if other than Bennet i_ Sampling Event 4rb tsesr%cr %Jacr Prey Well Sampled in Sampling EventjJJA pffBufferl.0 7.0 pilBuffer4.O Ll. Specific Conductance uMROS/cm Well Depth d17 Depth to Water Before Purging s3 41 Casing Volume Well rfA .653h Well .i 4.367h Conductance avg S7 p1 of Water vg Well Water Temp avg 14 .S Re4ox Potential li437 Turbidity t5c It Weather Cond fl Extl Amb Temp.prior to sampling event Redox Potential Eli LI 33 Time4SO GaiPurged I.LS conthictance 57 Tinieg1__Oat Purged SM Conductance ci Mo pH pH Temperature 1471 Temperature SC Redox Potential Eli Tmbidity 41 Redox Potential Eli Turbidity Gal Purged 99 Conductance 57 pH_ Temperature /4 Time o%SO Conductance GaLPurged SC.S8 8.15 p0 C.7LI Temperature Redox Potential 14 .S Eli______________ Os ltrfl TWill Grossudwater Discharge Pejm_j Groundwater Moultoring Quality Assurance Plan QAP Date 11.17.06 lievision TUrWcJIEY. Page 41 of 41 Volume of Water Purged Pwiipiag Rate Calculation 3M Flow Rate in win Sl60t .33 Time to evacuate two casing volumes 2V T2V/Q 30 Mri Number of casing volumes evacuated if oilier than two_ If well evacuated to dryness number of gallons evaduate Name of Certified Analytical Laboratory if Other Than Energy Lab A%JL Sercr i/escYs 4ntctcc.oa W4 yfSnnnnui Sannp Teu frircle $inuile Volume indicate Wther thak a snecifled belni Filtered circlel Preserentive Added ciclel VOCs Nutrients 61 Sx4Onil bOwl WI ZSO4 HØavyMetals 250th1 LN 111403 All Other Non- Radiologics 4Y 2501W NoPreservativeAdded Gross Alpha Other specify Aiii4Zk3M 1000 ml SamjæS volume IT 112504 Ifapreservativeisused Specify Type and Quantity of Peservative Comments _ArruJ On Otarn nstA Sotw4s tn P.srn.. Yanner I41GL nrcen1 1.cJ mLa 4tJcGA-o.k ThcI- sJaken 4Lb4J4 Pflc VJexkhrril Stflk4 bqyn 0.ktMO5c5 ba Qs Rarcca Sat sd ct ATTAC1MENT1 WJIITE MESA URANIU1W MILL FiELD DATA WORKSHEET FOR GROUND WATER Description of Sampling EventSTh Quara roc4 bUcJer Sampler Location well name MW 3/1 Name and initials 140 rI_ Date and Time for Purging 200 and Sampling if different Well Purging Equip Useth Lpump or _bailer Well Pump if other than Rennet Sampling Event OAtXet WAtt Prey Well Sampled in Sampling Event MW pilfluffer7.0 7.0 pflBuffer4.0 Lid Specific Conductance ggi uM Well Depth 45 Fl Depth to Water Before Purging 43 Casing Volume /4 Well ..S .653h Well /t .367k Conduebince avg SI42 pH of Water avg QaiSS Well WaterTenip avg 14 11 ReddxPotentil Eh35S_Turbidity Weather Cond tte-Extl Amb Temp.prior to sampling event go Time Gal Purged Conductance S9 16 Temperature Redox Potential Eli___________ Turbidity Ci LQirl Conductance pIL- Temperature_ Gal Purged -1 L-g 41 Time oqpa Gal Purged q.q.5 Conductance St .O pH Temperature 14 Redox Potential Eh 13 Ththiditv Time t3\GaLPurged 1LZ Conductance 0k pH C.75 Temperature iS Redox Potential Eli________________Relox Potential Eli Mill Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP Date 2.25.07 Revision Page 40 of 41 ur Mill Gronadwater Discharge Permit Ciouadwater Monitoring Quality Assurance Plan QAP Date 11.17.06 Revisiosc Page 41 of 41 Volume of Water Purged Thrhidlihr ggpjg Rate Calculation Flow Rate in win 5160 .33 Time to evacuate two casing volumes 2V T2VIQ 3X Mm Number of casing volumes evacuated if other than two_ if well evacuated to dryness number of gallons evacuat Name of Certified Analytical Laboratosy if Other Than Energy Labs AWL S1erF L/t Amcnk L6 tfie thunvle Tnk circle Sthjle Volume indicate if other thIS as suecifled heiæ Filtered circle preservative Added Idrele VOCs Nutrients HØavyMetals All Other Non- Radiologics tW 3x40m1 womi 250th 250 ml 111 uso4 fl llO3 NoPmservative Added OrossAiplia J7 1000ml /%112S04 Other specify Sample volume Jfapmservativeisused SpecifyType and Quantity of Preservative RsrrCA nail cetqVSripIA rnmments Aeruni flisras Samnr.l ta.on...a.a- ippflr I4iiL...orsen3t jjfr rft\c ja21iert WCrA\%Lsr mkJ i.41-St Utc-3rbOsA% Sryn ACfl% PUtty-rMk kci --c rA4 dI4S -- Mill Groundwater Discharge Permit Groundwater Monitoring Quality isrance Plan QAP Date 2.25.07 Revision Page 40 of4I AflACJHEMUFNT WWTE MESA URANUJM MuLL FIELD 11ATA WORKSEIE1 FOR GROUND WATER Description of Sampling Event MTh frtocxticj thJar Sampler ________________________Name cnwd ntin1o it vmILocationwellnameMWLj Date and Time for Purging 1-13-and Sampling if different Well purging Equip Tfseck Lpump or Well Pump if other than Rennet Sampling Event Oaexr%a-eov.n4 bJ44tr Prey Welt Sampled in Sampling Event MLJ pHBufferl.O 7.0 pflBuffer4.O Ll.C specific Conductance %4 uMROSIcm Well Depth X3 Depth to WaterBeforePuitn 45 Casing Volume 4t1 Well .653h Well .361h Conductaince avg pH of Water avg 1.oi Well Water Temp avg I4 Reox Potential fib 2X Turbidity Weather Cond.__________________Hxtl Amb Temp.prior tosampling p...ant\ Time fl cEal Purged_______Times Gzd Conductance_____________ pH Tot .aAt.L A1flbZ3O_VWGI 44flt2 Temperature ciw4 LU3 Redox Potential Rh Redydntial wit Tuthidity_rbidity Mill Groundwater Discharge Permit Ozonadwater Monitoring Quality Asstwance Plan QAP Date 11.17.06 Revisiozr Page4l of4l Volume of Water Purged 1W Ththidhir jgping Rate Calculation Plow Rate Q9 in gpm 5/69 .33 Time to evacuate two casing volumes 2V T2V/Q__________________ Numberof 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 Lab MAiL Srn Vocs Amctco.n t4 La\D Sample Taken dSe SiinoIe Volume lndieitŁVther iliah.aasnedfled bets Filtered fulsel Preservative Added drelq VOCs Ntrients 3x40m1 10Dm .-YJ ffO4 avyMeteb 250th1 lIMO3 All Other Non- Radiologics 250 ml Ne Pitservative Added GrossAipha Other specify nLet4 Wi4tWJ 1000ml Sampl volume 112504 jt If preservative is used Specity Type and Quantity of Preservative CmIIIts on A4 tnprtLSnjr_c 14t tset 0P sortpks mWert 4-on Lcflr 1461JA rcset4 op4l$.4c J- iaer ck.ot k%itr Scnfl-j cit caO pocAs.and ckJl1 MIII C-roundwater Discharge PermJt Groundwater Monitoring Quality Assurance Plan QAP Date 225.07 Revision Page 40 of 41 A1ITACHMENT 11 WHITE MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUND WATER Description of Sampling Event 4Th G-rowl UUcr Sampler Location well name Mid Nam.e and initials tcbflflte t4aG41 r14 Date and Time for Purging AL 11 and Sampling if different Well Purging Equip Uset Lpump or_bailer Well Pump if other than BenneQ..jJ1_ Sampling Event .rL.6.rM4 WJce Prey Well Sampled in Sampling Event_%J i5 pllBuffer7.O 7.0 pHBuffer4.0 Specific Conductance 141 Well DepthS 1S Depth to Water Before PurgingAO .1 Casing Volume Well 21 SG .653h Well .367k Conductance afl X7 pU of Water vg WellWaterTemp.tVg ftt .S1 RØdoxPotential Eli lflTurbidity Weather Cowl P441 L\ci Oucl\Extl Amb Temp.prior to sampling event 4C Li TiniejO4c ClaLPurged Q4S Conductance X7 c8 Times IllS.Gal.Purged N5S Conductance Ci pH 751 rss ktfl7 TemperatureJ Temperature Reciox Potential Eli Turbidity Redox Potential Eli Turbidity TimeJ150 Conductance Gal Purged VO 47 pH Temperature Redox Potential -k Bk IS Time 121S Gal Purged 3R.S Conductance a.77 7.S7pH_ Temperature Redox Potential Eli 1% .4 ---4--- ItAttI Mill Groundwater Discharge Permt Grnuudwater Monitoring Quality Assurance Plan QAP Date 11.17.06 Revision Page 41 of41 Voltune of Water Purged \S Tuthiditv FflmPfti-E Rate Calculation Time to evacuate two easing volumes 2V .33 T2VIQ jaC Number of casing volumes evacuated if other than two If well evacuated to dryness number of gallons evacuate Name of Certified Analytical Laboratory if Other Than Energy Lab I4tAJ1 rror t/c Amcnco We Lit gfige $ppwle Taken f4rcie SiSible Volume Indicate if other ii aS specified below llhltered Wrcla Preservative Added circle VOCs 3x4Ond ncc Nutrients EŁavyMetals All Other Non- Badiologics -JV j.Y lOOmi 250S 250 nil IzO4 NoPreservative Added irossAipha Other specify I000ml Sample volume 112S04 .i9 Ifapreservativeisused Specify Type and Quantity of Preservative .-- cominentslrrhiea on t t0$ pueqtctaA Arrtphiq ecr4-Pt.trtjt Jeti I.O rndkh ..wc\c ia32 L c4 1246 1Lnr l4o1GcIat rtst o.t iOSg/ 1X3O $i s\-ol cvtk 4C4QA jkiert tekwo$ctwjc WgrAk1tr cAk ClOcr jjj 4tvpcthirt ss riSnX .- Plow Rate QJin win s/go AflACHMENT WifiTE MESA URANffUM MILLLDDATAWOFJS11JEKTFOR GROUND WAThR Description ofSamplingEvent 4Th Q0A0-roctnul t/Jctr Sampler Location well name lj Name and initials l46sL rLL_ Date and Time for Purging 11 IC OK and Sampling if different Well Purging Equip Used .2Lpump or _bailer Well Pump if other than Beunet if Sampling Event nst-4e-rniin4 b.Uct Prey Well Sampled in Sampling EvenLJ4 pLBufferl.O tO pflBuffer4i Specific Conductance j17 uMHOS/cm Well Depth 130 Depth to Water Before Purging 90 Casing Volume Well aS .5 .653k 311 Well .367lt Conduthince avg eM pHd Water vg sq Well Water Temp avg 14.11 Redox Potential i$I Turbidity 37 Weather Cond flu Bxt1l Amb Temp.prior to sampling eventLhic T9uperature cfl Redox Potential EM L1 Turbidity TimeJ34S GaL Purged D3.1 Conductance pq pH 713 Temperature 14 .P\ Redox Potential Eli 10 teb Time Gai.Purged 24.GS Conductance pH Temperature .30 PeAnz Potential EM .N hi Mill Groundwater Discharge Pci-mit Groundwater Monitoring Quality Assurance Plan QA Date 2.25.07 Revision Page 40 of 41 ThneQ.jW Gal Purged Time IS Gal Purged 13 Conductance 637 Conductance pH pH Temperature Redox Potential Eli Turbiditydat Ut Mill 3rounctwater Discharge Permit Date 1t.17.D6 Pevisioir Groundwater Monitoring Quality Msurance Plan QAP Page 41 o141 Turbidity Turbidity VotumeofWaterPurgecfliSusweaemS Pumping Rate uiqtio1 Flow Rate in gpm Time to evacuate two casing volumes 2V SF60 33 T2V/Q ISS M1 Number of easing volumes evacuated if ofli titan two 1.1 If well evacuated to dryness number of gallons evacuated___________________________ Name of CertifiedAnalyticalLaboratory if OtherThanEnergyLabs Sn-cr Amctc w4 ZaMhiS mnte Taken14 Sitile Veluune idicate if other ThTh11 OS SUCCIfiS belOw Filtered fcirde Preservafive Added circle VOCs 3x40m1 RCL Nutrients WOnt H$O4 EØavyMetals LV 250th ftt fl103 All Other Non- Radiologics 250m1 NopreservativeAdded GrossAlpha 1000mI fit IhSO4 Ct Other specify 1flJ2feP1L Sample volume Ifapresenrativeisused Specify Type and Quantity of Peservative Comments Arruak an c4i p4 L.30 tinner SAEY%jshfiq e.tn1-Pt.i.ree %tcan .o 1tro encXeJY 0k ILtEs 1431 L1%sh A4 jggg Uai.oL. at Q.3 1dt preSeI4 Soaples 4z1hcn tJcr c-cCr rou4$rssJ IWtk-c WerMter OJcc ccj tah sxi4 tntk ClAstc rCCt 1ac1 Mill C-roundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP Redox Potential Eh 3S7 Redox Potential Eli. Date 2.25.01 Revision Page 40 of4l XTACEIMENTWWMESA URANIUM MuLL MELD DATA WORKSHEET FOR GROUND WATER Description of Sampling Event frroutnct tAJar Sampler Location well name Mu Ia Name and initials fl44 _r14 Date and Time for Purging It-.c and Sampling if different Well Purging Equip Useck 2Lpump or Well Pump if other than Bennet J1_. Sampling Event Oaar%cp G.ramn4 Wce Prey Well Sampled in Sampling Event M.i pHBnffer7.O 7.0 pHBuffer4.0 Specific Conductance t11 nMHOSIcm Well DepthS 10 Depth to Water Before Purging to Casing Volume Well 14 .DA .653h Well .367h Conductance avg 3CjQ7 pH of Water vg Well Water Temp avg 14 Reox Potential Si a4S Turbidity Weather Cond 9cr CoUq Extl Amb Temp.prior to sampling event CL_ tme..j30O Gal Purged .CS Conductance 4001 Thue fl1 Gal Purged 11.5$ Conductance______________________ pL 7_to .Ct Temperature i4k Temperature Redox Potential Eli aoI Turbidity Redox Potential Eli LE Turbidity Tiine_æ4 Gal Purged lt Conductance__________________ pR 7.00 Temperature 14 Time NOO GaLPurged 3.UI73 Conductance_________________________ pH Temperature 14 L4 Id jviffl Groundwater Discharge Permit Date IL 17.06 Revision Groundwater Monitoring QwJity Assurance Finn QAP Page 41 of 41 Turbidity Turbidity_______________________ Volume of Water Purged Rate Cpguhtion vlow Rate in gpin Time to evacuate two casing volumes 2V 5/69 ________________T2V/Q j47 ik Number of casing volumes evacuated if other than two____________________________ well evacuated to dryness number of gallons evacuated_________________________ Name of Certified Analytical Laboratory if Other Than Energy Labs /4 t.tJ Ser cf Va- AmcricAr w4 Lc% ThaiiLfiS nle Kaken cI44 SSUle Volume jndlcate if other thiS uS specified below Filtered Lclrde reservntive Added fcele VOCs 3x4OrnI .-HCL Nutrients loOm 02S04 HØavyYlatals l7 2501ii1 it HNo3 All Other Non- Radiologics LV 250 ml NoPreservative Added GrossAlpha 1000 ml jV 112S04 Other specify Sample volume If preservative is used Specify Type and Quantity of Preservative CommentsArrunA on ct p4 la-li $or Mt nnA Scurtphpq entr-PornLi 47 mrn%kls tntiŁ MIS i.tc Sac o.k gg ujjcr Cear SrotQ .4 RaA Wenkr tnntr l4itk_prtsen btean oŁ l4L cLI td ATTACHMENT WHITE MESA JURANIUM MILL FIHELD DATA WORKSHEET FOR GROUND WATER Description of Sampling Event MTh Quiarer frroutnA lsiJJer Sampler Location welt name MrJ tg Name and initials twa..lAp rfl Date and Time for Purging -0 CS and Sampling if different Well Purging Equip Useck Lpump or _bailer Well Pump if other than Bennet sampling Event tAtt-.raun4 1rJc4cc Prey Well Sampled in Sampling EvenLM lJ pHBuffer7.0 7.0 pHBuffer4.0 Specific Conductance ff11 uMHOSIcm Well Depth aZ Depth to Water Before Purging .73 Casing Volume Well .3.653h Well .36710 Conductance avg 3S pH of Water vg I1 Well Water Temp avg 13 t3 Redox Potential flSs Turbidity Weather Cond crrA Extl Amb Temp.prior to sampling event Lj Cr pH Temperature CS Redox Potential Eli 17 Mill Gwundwater Discharge Pennit Groundwater Monitoring Quality Msurance Plait OAP Date 2.25.07 Revision Page 40 of 41 tmeJMS Gal Purged Conductance 39 C-j .L pH Temperature Redox Potential Eli flS Turbidity_ DC TimeJLOC Gal Purged .4S Conductance I3 Thne 1S3L Gal.Purged 1L53 Conductance IS pH Temperature t4 QI4 Redox Potential Rh Turbidity Time jcao GaL Purged 05 Conductance 3S pH Temnnsitiire -Os Redox Potential Rh tur MIII Groundwater Discharge Permit Groundwater Monitoring Quality Msurance Plan QAP Date 1117.06 Revision Page 41 of 41 Volume of Water Purged S% Turbidity llUiP Rate Calculation flow Rate in wn 5/60 .33 Time to evacuate two casing volumes 2V T2V/Q clCt Mk Number of casing volumes evacuated if other than two_ If well evacuated to dryness number of gallons evacuateji Name of Certified Analytical Laboratory if Other Than Energy Labs j4 tsi Vet Amceco.V%We4 7yp of $aunuk le Taken Lcfrcie isile Volume fiidiºateifther liSt as specified below Filtered circle pregegvatlve Added cie VOCs Sx4OinI .-lift Nutrients 100 ml ff 11zO4 RØavyMetals Au Other Non- Radiologics 12 251St 25 ml ffi03 No Preservative Added irossAlpha I000ml it 112804 Other specify Sample volume Ifapreservativeisused Specify Type and Quantity of Preservative ramments Atrhit.A ii flnner l4CICOLA ortsefli Sawclta.P...4 tcCJLiPizr-j ct\t.3C Lcfl S4C jrt C-lce.rtotacA %tt j\%tctr__Onrcc4_.3k_Sove u4S AA4 cOt I-PaltcA Jc.cthmJc Mill Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP AflACHMENT ii WHITE MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUND WATER Description of Sampling Event 1411t Qt4-rroiantl taLr Sampler Location well name MA IS Name and initials tnnt 40 -r/4 Date and Time for Purging it It and Sampling if different Well Purging Equip Usedz Lpump or _bailer Well Pump if other than Bennet sampling Event Aan.rct-.rntsrn4 Wace Prey Well Sampled in Sampling Eventa/Pc pHBufferl.O 7.0 pIlluffer4.O Specific Conductance uMBOS/cm Well DepthS Depth to Water Before Purging SO Casing Volume CV 40 Well I4 .4 .653h Well .367k Condnttiince avg 4L.L pH of Waler vg 123 Well Water Temp avg LSR.0 Redox Potential Eli 430 Turbidity Weather Cond Extl Ant Temp.prior to sampling event Time QSSO Gal Purged CM Conductance 43 Temperature 14 CfS Redox Potential Eli Time OISS Gal Purged 4.4 .G Conductance__________________ PH T.Ot Temperature 34.0k Redox Potential Eli______ Date 2.25.07 Revision Page 40 of 41 time_oiicS Oal.Purged 8.2S TfineOSOO Gal.Purged 1S Conductance Conductance____________________ t7.oc pH 7og Temperature 13 .\Temperature \3 CR Redox Potential EhRedoxPotentialEli45 Turbidity Turbidity ..o7 Mill imuadwater Discharge Permit Date 11.17.06 Revision Groundwater Monitoring Quality Assurance Plan IMP Page 41 of 41 Turbidity ThLtiditY Volume of Water Purged aaeauaua4 pumoi ijg Rate Calculation Flow Rate QJ in gpm Time to evacuate two casing volumes 2V 5/60 ____________T2V1Q i.o 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 kJ Sc st /4inceco w4 Loi.%o 4Sasupjn Sainide Taken 1frcle ihUle Vohmie indicate if other bulowl Filtered circle Presenative Added circle VOCs 3x40m1 act tN fients HavyMetals All Other Non- Radiologics 100 nil 259i1 250 ml ft H2O4 it4O3 ct No Preservative Added GmssAlpha 1000m1 /%JI2SO4 CT Other specify bn4tt4 ttf44n SampI volume Ifapreservativeinused Specify Type and Quantity of Preservative Comments Arri\icek on cJFc Scunplpq tielt c0i3 IdkJS oA-tOt s$ A4 poC TZppr 4lG0L1..presetiL ecni-PcA.rn bean flir4e eA4et4ilOJO 11I ck oloties 444cn 3ert A3 ciLfcclrkeoUdh WenMw Qucc-aŁ t1 pch Mill Groundwater Discharge Pennit Groundwater Monitoring Qua Wy Assurance Plan QAP Time IIO Conductance GaL Purged NA Ct 6S pH Temperature 7.o N.tI Redox Potential Eh f3 Date 2.25.07 Revision Page4O of 41 AflACIBIMENT WifiTfE MESA URANIUM MuLL JFRELD DATA WOR1SIIEET FOR GROUND WATER Description of Sampling Event gilt Qthat40 rou.ncl Ut.Lr Sampler Location well name M\J 11 Name and initialstWe u6141 -ri-I Date andTime forPurging 1-and Sampling if differentL Well Purging Equip Used Lpump or _bailer Well Pump if other than Bennet Sampling Event tr .ar%cr-rAvn4 bJhle Prey Well Sampled in Sampling Event WL pH Buffer 7.0 7.0 pH Buffer 4.0 LI Specific Conductance UMHOSIcIn Well Depth fl Depth to Water Before Purging 77 Casing Volume CV Well 33 .15 .65Th Well .367h Conductance avg 4975 pH of Water ivg Well Water Temp avg 13 Redox Potential tUi 271 Turbidity Weather Cond Svnn Extl Amb Temp.prior to sampling event Gal.PIIS V$ Conductance Li Tiine 1C13S.Gal.Purged C.S Conductance It p11 7.OS pH 7.0L Temperature Temperature Redox Potential Eli 19 Redox Potential Eli TurbidityTurbidity TimeJ1OC Gal Purged 1Q Conductance go pH_ tamneratiire Potential Eli______ Mill OoimdwaterDiscbargePermit Date 11.17.06 Revision Grouadwatet Manitoring Quality Assurance Plan QAP Page 41 of 41 Turbidity jgpjgg Rate Calculation Plow Rate in wa Time to evacuate two casing volumes 2V sigo _____________T2V/Q J3 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 1..Sc VC- Amcs-cccn Oc4 Lcic ype of SamSj $Sude Taken Ickde Sanuile Velume Indicate if other Thalkiaispeclfted Filtered circej Preservative Added circle VOCs 3x40m1 na Nutrients loGin tF 172504 HØavylWetals zsothi 11M03 All Other Non- Radiotogics 250 ml No Preservative Added OrossAipha Other specify 4t4 WfiPn l000ml Sample volume 172504 Ifapreservativeisused Specify Type and Quantity of Preservative CommentsJtr.unt an o4 tYIHQ onncr l4aIltoLat prtsefl4 -Par Olafce o1Ak $ow%alp nn4-Pu.r.k.f btotLn ok 4rNcr-dr Il1 tpin3ert G1ecr WenMir -aak iiZjs.cLLc OtcflM1k gcP tat tA.tiX MIII Groundwater Discharge PerjtAt Groundwater Monitoring Quality Assurance Plan QAP Date 2.25.07 Revision Page 40 of pH Temperature Redox Potential Eli 85 ATTACIHTMENT WWTE MESA URANIUM MEL IIRELD DATA WORKSHEET FOR GROUND WATER Description of Sampling Event911t ra lJJer Sampler Location well name MW Name and initials 4s114i r14 Date and Time for Purging IQ 11-4-and Sampling if different Well Purging Equip Useth Lpump or_bailer Well Pump if other than Bennet_afJl_ sampling Event t.0tL-Wate Prey Well Sampled in Sampling Event Mb Fl pflBuffer7.O 7.0 pHBuffer4.0 L4 Specific Conductance 17 uMHOS/cm Well Depth Istt Depth to Water Before Purging 94 Casing Volume 4fl Well 40 .653h Well .367h Conductance avg 3OC p1T of Water vg_L.74 Well Water Temp avg 14 Redox Potential flhtX Turbidity offL Weather Cond ct ociL\Extl Mnb Temp.prior to sampling event ThneJjliO Gal.Purged Gia Titne 1103.GaLPurged IL conductance 37 Conductance pH pH L73 Temperature_13 Temperature iLl Redox Potential Eli c0 Turbidity Redox Potential Eli______________ Turbidity 17 Time II.O Gal Purged Time 1150 Conductance Gal.Purged SL3 3372 PH Temperature .7o 143 Redox Potential Eli jWjftGrnuuduaterThscharge Permit Date 1117.06 Revision Oroumiwater Monitorg Quality MsurancePlmi QAP Page 41 of 41 4-J Turbidity Volume of Water Purged pi1g R$e Caictdapn Flow Rate in gpm Time to evacuate two casing volumes 21 560 33 T2V/Q 47 Mrt 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 tr sf Amcrcc cd Mkannpl $anuDle T4p fchcc Siiihle Volume Imlicate ifthØr ghg aS specified Mow_i Filtere4 Isirde Preservative Added dSeJ VOCs 3A40i1 na if Nuthents lOOmI H2$04 UrnyiWetals 2501n1 LIMO3 Al Other Non- Radiotogics 250 ml No Preservative Added OrossAlpha Other specify ntse4iwpie 7t l000ml Sample volume I%n2so4 Ifapreservativeisused Specify Type and Quantity of Preservative Comments /trru.A ogsO rnn.r 14aIL mitA SGr$fi9 ecrf Piirr bean 2c O0 st 13.1 ini citJS Pure tnOt3L rx4 .OO SAfl tA-poa Lfl i-D.c% deos Thrkc4-otA\ WeaMin tLIOUJ4L J/v.vj rtck seA-1c .SwtplC$ Mill Grnnndwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP Date 2.25.07 Revision Page 40 of 41 AflACEMENT 11 WifiTIE MESA MILL FIIELD DATA WORXSREET FOR GROUIMD WATER Description of Sampling Event 4Th 4-rotanel bJCk Sampler Location well name \A it Name and initialtni fl6iit1 r14 Date and Time for Purging 1-4 CS and Sampling if different JIM Well Purging Equip Used Lpump or Well Pump if other than Bennet J1_ sampling Event LAcr-ran4 t.Ue Prey Well Sampled in Sampling EventY/4 pIiJ3ufferl.O 7.0 plBuffer4.0 Specific Conductance gV7 uMROS/cm Well Depth Depth to Water Before Purging_SO Casing Volume 4t1 Well .11 .65Th Well .367k Conductance avg uSFS pilot Water vg Well Water Temp avg .V7 Redthc Potential Bk 441 Turbidity Weather Cond Oucrc Extl Amb Temp.prior to sampling eventL_IuICL.. Time_O515 Gal Purged 3C .3 Conductance 1333 p1 Temnerature 11 Redox Potential Eh 31 -S tmesO Gal Conductance Purged p3 TimesflO Gal Purged IS Conductance 11Th p0 17 Temperature Temperature 13 Redox Potential Eli Redox Potential Eh Turbidity Turbidity Time3S Conductance Gal Purged .65 1S 40 pW Temperature j37j Redox Potential Eli _____utfl Miff Gmundwater Discharge Permit Date 11.17.06 aeialo Groundwater Monitoring Quality iance Plan QA4P Page 41 of 41 UWLLWJ Turbidity Volume of Water Purged ging Rate Calculation Flow Rate in gpm Time to evacuate two casing volumes 2V sioo .33 T2V/Q M\ Number of casing volumes evacuated if other than two oI if well evacuated to dryness number of gallons evacuated___________________________ Name of Certified Analytical Laboratory if Other Than Energy Labs c- Wc%4 LJ Thaliaii ile Taken fc Sisple Volume indicate father illS aS specified below Filtered fdrde Presenadive Added circle VOCs Nutrients flEavyMetals All Other Non- Radiotogics OrossAipha Other specify 5JLN t2 3x4Onil lOOml 2501ii1 250 ml 1000ml Sample volume .. tN Ha IzS4 7j t1N03 No Proservative Added 112504 57 jn4 4fliAPflL lfapreservativeisucied Specify Type and Quantity of Preservative Comments ArruteI on cJlit p4 c1p tnn..r I4liL far tt otIJ\4Otiriplpq aucnf PcAre oi4 IA%kJS xt4 RU 5k cJ-0gs-i Stt oq4ptcAwrThroucot4 WCAk%wr dod4 brrt ckcnp cYnzk presefl Pu.rcyrl cpte Mill Cjjoundwater Discharge Permit Ground water Monitoring Quality Msvrance Plan QAP AIITACJBIMENT 11 WI JuTE MESA URAMUM MULL FJLELD DATA WORKSHEET FOR GROUND WATER Desciiptiofl of Sampling Event 4Th Quwcr Crrousvl UUva1er- Sampler Location well name 1AW ac Name and initialst.fletI6L -14 Date and Time for Purging ilk and Sampling if different Well Purging Equip TJseth Lpwup or_bailer Well Pump if other than Bennet Sampling Event sn.r%et-roan4 We Prey Well Sampled in Sampling Event Mw pHBuffer7.O tO pflBuffer4.0 Specific Conductance__96ITLJzMHOS/cm Well Depth Depth to Water Before Purging 4O ES Casing Volume CV Well .ai .653k Well .361k Conductance avg 676 p0 of Water vg Well Water Temp avg jt-RØdoxPotential flh -LI Turbidity Weather Cond crc CtaJ1 Extl Amb Temp.prior to sampling event time.JD OatPurged .cc Conductance 67cc Thne j5I GatPurged l1 Conductance 6771 pH 7.Oct pH 7.3C Temperaturt J4 .tA Temperature .Lj Redox Potential EhLJ135 Turbidity Redox Potential Eli Lt7 Turbidity Time ISIS Gal Purged 1L Conductance Cu pH_ Temper 7t3 ature_________________________ Date 2.25.07 Revision Page 40041 Tinie_Jki GaL Purged C1 Conductance Li pH lit Temperature llm RedOx Potential 13k 4Y4 Redox Potential Bk______ Mill Groundwater Discharge Permit Date 11.17.06 Revision GroundS Moth Wring Quality Assurance Plan QAP Volume of Water Purged Pug_Rate Calculation Tiithiditv Page4l of 41 Flow Rate Qin wm sI60 _____.33 Time to evacuate two casing volumes 2V T2V/Q Number of casing vohunes evacuated if other than two_ If well evacuated to dryness munber of gallons evacuated Name of Certified Analytical Laboratory if Other Than Energy Lab 4SIIJL /ScisFVczt Atnc$cc.a Wc4 jgfie Taken fclMe Snuile Volume indicate if other tSiaa specified below Filtered icircle Fregecvafiye Added circle VOCs 3x40m1 RCL VN Nutrients 10Gm H2$04 22 zsothl All Other Non- Radiologics AY 250 ml No Pmservative Added GrossAipha Other specify IL IY l000mI Sample volume 112804 Ct Ifapreservativeisused Specify Type and Quantity of Preservative Mill Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP Timeifl5 Gal Purged 34 ConductanCe 70 pH_2.1S Temperaflut_ Redox Potential Rh Lrb Date 2.25.07 Revision Page4O of 41 MLTACHMENT WIHUITE MESA UMANIUM MILL FlEW DATA WORKSEIIEET FOR GROU WATER Description of Sampling Event MTh Q-1a roctnp LACLr Sampler Location well name f/LAii .za Name and initialtnn.p r14 Date and Time for Purging It-La-and Sampling if different Welt Purging Equip TJse 3Lpump or Well Pump if other than Bennet fL_ Sampling Event ttnrtr 6.roPbn4 W4te Prey Welt Sampled in Sampling EventJ1Lii pflBuffer7.0 7.0 pHBuffer4.0 Lid Specific Conductance Vfl uMBOS/cm Well DepthS L\ Depth to Water Before Purging hi .40 Casing Volume Well SO -k .653b Well _4.361h Conductance avg 7030 pH of Water ivg G-Fl Well Water Temp avg 2$Re4wc Potential Rh 435 Turbidity Weather Cond t\oLk Extl Ajnb Temp.prior to sampling event tme...fllS Oal.Purged Conductance 70-rr Tilne 124$Gal Purged ls Conductance IOM pIL p0 Temperature 43 Temperature Redox Potential Rh__qRedoxPotentialRhrli Turbidity Turbidity 45 TimeS\O Conductance 70 Gal Purged ip pH Temperature Redox Potential Rh Lj3 lur -C .7 Mill Groundwater Discharge Permit Groundwater Moaitoring Quality AssurancePlaa QAP Date 11.17.06 Revision TurbiditK Page 41 of 41 Volume of Water Purged ppjgS Calculation Plow Rate Qin win 5160 _____33 Time to evacuate two casing volumes 2W T2VIQ 114 MA Number of casing volumes evacuated if other than two_ If well evacuated to dryness number of gallons evacuated. Name of Certified Analytical Laboratory if Other Than Energy Labs Sr rF t/t i. AmcPicAn We4 ype of Sumk Taken efrele SØSuile Voinnie Indicate if other tIIThBtSS specified beJoEk Filtered fcfrcl Preservative Added circle VOCs Nutrients UŁavyMetals tZ Sx4Oanl loom 25Dm if HCL Si u2so4 fl ltIO All Other Non- Radiologics LW 25Dm No Preservative Added GmssAlpha Other specify hvts PIib 1/JOOmI Sample volume lit 112504 If preservative is used Specify Type and Quantity of Preservative Mill Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP ATTACIBIMEP4TI WHITE 4IIESA URANIUM MILL FIELD DATA WOIUCSHEfl FOR GROUND WATER Description of Sampling Event 14Th Qr4 rocn6t IAJ0Atr Sampler Location well name MW -3 Name and initials tnnn f36fl.41 ri-I Date and Time for Purging 11--OSs and Sampling if different Well Purging Equip Usert Lpump or _bailer Well Pump if other than Bennet Sampling Event aarcr .mun4 1Jete Prey Well Sampled in Sampling Event MW 7.0 pHBuffer4.O Lj WellDepth 1$ Casing Volume Well 11.73 .653k Well .367k pH of Water vg S4S _________Redox Potential h2XTuthidity AS ____________Extl Amb Temp.prior to sampling event CL p0 Buffer 7.0 Specific Conductance 1tl UMBOS/cm Depth to Water Before Purging 114-03 Conductance avI ThX 15 Well Water Temp avg___________ Weather Pc4rcL Ok4 i4 ccl4 timeJSS Gal Purged Time2 I/S0 GniPu Conductance S3.L rged PH cat TemperatureTemperature 3-8 Redox PotentialEh O9 Turbidity_______________ TimejiiQ$Gal Purged l3 Conductance tO Temperature j3 pLI Redox Potential E1ft Turbidity Time i1 2S Gal PurgejfV6 Conductance_________________________ Pp L77 Temperature s5 Redox Potential Eli 3OS Redox Potential Eli 34 Date 2.25.07 Revision Page 40 of 41 u.rfl flGrounclwaterDiscbarge Permit Date 11.17.06 Revision Orewidwater Mnnitoæag Quality Msuraace Plan QAP Page 41 of 41 Volume of Water Purged V4wi Tnrbidlihr PumpingR Calgulation Plow Rate QJ in gpm 5/60 _____.33 Time to evacuate two casing volumes 2VT2V/Q7t 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 Lab AWL /Sor Vc1 Amcrc0 Ae4 La iic6F1 4.\cn 1740 mIs 54c Pu.re nieck n1 IThL 1LI sd etnpks 1Jfrier vixS c..kcsLs WerAk%%re CAO k-0 a4 u.3in Pitrt VOCs iPS Taken circle SiMile Volanne indicate if other SM aS specified KnIn\ filtered circle 3x40 ml Nutrients lOOmI IZSS4 HŁavyMetals 4MJ Other Non- Radiologics 250S 250m1 01403 NoPreservativeAdded GrossAlpha Other specify fnsn4 trcinb rn I000inI Sample volume IkSO4 CVM Ifapreservativeisused Specify Type and Quantity of Preservative rnmments Aeru.A An Clis Far OMroe otaA SJna Pflsn EeJAan ok ws1 ParcACl uiia brtsefli Mill Groundwater Discharge Peryt Groundwater Monitoring Quality Msurance Plan QAP AflACHMENT WHITE MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUND WATER Description of Sampling Event gm frtOtnol tIUcJer Sampler Location well nameL._14 Name and initials l4n4 r14 Date and Time for Purging 10 QLand Sampling if different_ii -ii Well Purging Equip Useth Lpump or_bailer Well Pump if other than Bennet fL_ Sampling Event 4tt Ur%e-t.r4 W-Prey Well Sampled in Sampling Event______ pflBuffer7.O 7.0 pllfluffer4i Specific Conductance C1C7 uMHOS/cm Well Depth a Depth to Water Before Purging 4Q Casing Volume 4fl Well .S ..653h Welt 367k conductance avg pH of Water ivg 3C Well Water Temp avg Vt Redox Potential Eli 3S Turbidity Weather Cond flue ten Extl Amb Temp.prior to sampling event Redox Potential Eli______ ark __________ Date 2.25.07 Revision Page400t4l Time ISL GaiPurged .33 Conductance_________________ TiineJSS Gal.Purged Conductance PA .1I 4134 pH 7.I pH Temperature M4 Redox Potential Eli____________ Temperature 1.34 Redox Potential Eli______________ TurbidityTurbidityiS TimeSSS Conductance Gal Purged ..S LI4C1 pH Temperature 14S I31 Time j51 Gal Purged 3I Conductance 44 LI pH Temperature 13 .ci Redox Potential Eli u.tQ JyIJJ Gamradwater Discharge Permit Oroinidwater Mothtorbg Quality Msurance Plan QAP Date 11.17.06 1tevision Page 41 of 41 Vohune of Water Purged Pumpinj Rate Caiqulation Plow Rate in gprn 5160 _____.33 Time to evacuate two casing volumes 211 T2VIQ at An 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 Lab AWL /S4grsF L/c Amct.ca We4 gppjq Tgken chtle SÆSjileVolume indicate if other Than specified lielØw Filtered circle Preservathe Added circle 3x40m1 HCL JN Nutrients 100 ml fl H2S04 HØavyMetals All Other Non- Radiologics oP ZSOS 250 nil lIMO3 No Preservative Added GrossAipha Other specify 4nfd4 1- CI 1000mI Sampli volume 112504 if preservative is used Specify Type and Quantity of Preservative flomments Arrutat On ce .4 114%flnn..i.r i4aiCnLa nra.cas4 iiIn S\- MIA1A%JS itco1-fltD- ttti jnert bo SO cotorcJrkr Clt4rcA 3t51 tl4Icfl-rov..g RrrniO-k30 pJkek jr %530 P.ann Ka.mnn .CtArk O.srnr c.nA SArttsin Mill Groundwater Discharge Permit Groundwater Monitoring Qualin Assurance Plan QAI AflACHMUENT WilliE MIESA URANIUM MILL FIUELD DATA WORCSliEET FOR GROUND WATER Description of Sampling Event 4Th Qrer .rrowl UJcr Sampler Location well name iU Nan1e and untlEals tnnt r14 Date and Tune for Purging i1 10 cg and Sampling if different Well Purging Equip Used Lpump or 3ailer Well Pump if other than Bennet_.aj.a_ Sampling Event t-4n-Wce Prey Well Sampled in Sampling Event 4M 31 pHBuffer7.O 7.0 pHfluffer4.O 4.O Specific Conductance 41 uMHOS/cm Well Depth Depth to Water Before Purging 76 Casing Volume Well as 1.5 .653k Well 367k Conduthinceavg ZLSC pH of Water vg Well Water Temp avg l2l Redox Potential Eli 373 Turbidity 04 Weather Cond CT .a UA.S Exti Amb Temp.prior to sampling event .S% rimeHOi%O Conductance pH Gal.PurgeL4S ii 41 Time itCO Conductance Gal Purged JQp 7-JO pH Temperature Redox Potenti 13 K3 al 13k 440 Temperature 13F1 14H Turbidity TimeJ10 Gal Purged Conductance uH .q Turbidity Time EOO Conductance Gal Purged 31 S1 Li pH Temperature o95 Date 2.25.07 Revision Page 40of41 .4 Temperature 14.Ot Redox Potential Eli______________Redox Potential Eli Lw Mill aounctwater Discharge Permit Date 11.17.06 Revision Groundwater MonitoSg Quality Assurance Plan QAP Page 41 of 41 Turbidity Volume of Water Purged M%alSggnss _______________________ pmpingRap1cpjation Plow pa in gpm Time to evacuate two casing volumes 2V.33 T2V/Q tS Number of casing volumes evacuated if other than two .7 if well evacuated to dryness number of gallons evacuated____________________________ Name of Certified Analytical Laboratory if Other Than Energy Labs iJ 1.Sc tiac Arnck aM4 Type of SmuS Taken cktlei SiSiileVolume indicate if other th1 as snedliled bijqw iiiltered circle Prmervafive Added circle yOGa 3x40m1 Nutrients lODinl tub 112S04 iryMetals 1Z 250th liMO3 All Other Non- Radiologics 250m1 NoPreservativeAdded GrossAipha l000ml 12S04 Other specify jiin4.wftM it Sample volume If pmservative is used Specify Type and Quantity of Preservative Comments Arri1ueck on in_u tnnrr I401C014.sy prcses4 tott P..nxeAce 3-ar7 Lc ai .4 i2..t iJtiJ4%can\S .JSm Uert CjcAr h.rAThLP 4Lrto rcc.s ii 4k co\t.at-prcc.lp4c.in Mill Groundwater Discharge Permit Groundwater Monitoring Quality 4ssurnnce Plan QAP AETACUMENT WHITE MESA URANIUM MILL FIELD D414 WORKSHEET FOR GROUND WATER Description of Sampling Event 9cflt /-i27 Sampler Location welt name li/Al-Name and initials Date and Time for Purging 7/19 do and Sampling if different__________________ Welt Purging Equip Usect pump or _bailer Well Pump if other than Bennet Æ/1 Sampling EventLj rJ ..kn L21c.n Prey Well Sampled in Sampling Event N/fl pllBuffer7.0 pHBuffer4.O Specific Conductance u1aIosIcm Well Depth // Depth to Water Before Purging /3 Casing Volume Well it 7Z..653b Well .367k Conductance avg $I pH of Water ivg L7 Well Water Temp avg /t Redox Potential Eh3t3Turbidity Weather Cond /OI Extl Amb Temp.prior to sampling event Thne4Z4itQL_GaLPurged Conductance 5.3 Time uIsFJror Gal.Purged Conductance 3/5- 2f qg pH______________ I/i Temperature Ii Temperature Redox Potential Eh_3 f3RedoxPotentialEh Turbidity Turbidity TiineJLW___Gal Purged /3-2-Time 4170 Gal Purged Conductance Conductance 4S pH_ Temperature Date 2.25.07 Revision Page4oof4l Temperature Redox Potential Bk Redox Potential Eb_ MIII Gmundwater Discharge Permit Date 1.flh6 Pvisjon Urouudwater Monitoring Quality Assurance Plan QAP Page 41 of4l _________________Turbidity___________________ Volume of Water Purged WthenField-Rarametcrafa4\feasured t1 Pumping Rt C4lculario Flow Rate in gpn Time to evacuate two casing volumes 2V 5/60 _______________T2V/Q IS Number of casing volumes evacuated if other than two 1. if well evacuated to dryness number of gallons evacuated Name of Certified Analytical Laboratory if Other Than Energy Labs Al/A- yp of Sanuin Sample Taken cirelel Sinuile Volume indicate if other tb.as specified below Filtered circle Preservative Added elSe TOCs 3x40m1 lEt YN Nutrients lOOufl YN ØavyMetals 250th1 BNO3 Ml Other Non- Itadiologics 250 pj No Preservative Added sAlpba 100Gm 112504 YN Other specify its Sample volume If preservative is used Specify Type and Quantity of Preservative Comments ai 4hZO 4ftLer f/rSpt7 -frSnA-i i2ne JzYac /64 rr c/ac 7-tic Temprrflhire/ Redoxyhtial Eli. -7- IQ.r ____ Mill Groundwater Discharge P3TDt Date 2.25.07 Revision Groundwater Monitoring Quality Assurance Plan QAP Page 40 of 41 AnACHMENT ii WHIITJE MESA iJRAMUM MJILL FIIEIIJD DATA WORKSHEET FOR GROUND WAThE Description of Sampling Event gm QA4 reian4 bJtJtr Sampler Location well name ML Name and blnfl.4AI1 rA Date and Time for Purging Ii-and Sampling if different Well Purging Equip T.Jse Lpump or _bailer Well Pump if other than Bennet JL_ Sampling Event twr%cr .rnvin4 Wce Prey.Well Sampled in Sampling Event u1 pilBuffer7.O 7.0 pHBuffer4.O L1.O Specific Conductance CjC uMEIOS/cm Well Depth Depth to Water Before Purging 74 .3/Casing Volume Well .65Th Well .367h Condtttance avg pRof Water ªvg .g Well Water Temp avg Redox Potential Eli Turbidity Weather Cond Swvi Extl Amb Temp.prior to sampling event Ec rimeu1OR Gal Conductance_____________________ Purged_______Timeu Gal Purged Conductance p1L Temperature pH // Temperature./ Redo96tential Eli Tu6dity Redox PotentialEh Turbldity Time Gal Purged Conductance pH Time Gal Purged Conductance_________________________ pH_ Temperattit dox Potential Eli jqffl-QroundwaterDischargePennh Date 11.17.06 Revision Groundwater Monitoring Quality MsuraacePlan QAP Page4l of 41 Tudiditx_______________Tuthidisy_________________ Volume of Water Purged %flmmeauaseasasS gppiqg Rate Cculation Flow Rate in gpm Time to evacuate two casing volumes 2V 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 Than Energy Labs i/ic Amctcc %je4 Lie Snpe Taken circle Sihjle Volume hidicte it other ThThS aS specified below Filtered circle Presenatfive Added circle VOCs Nutrients 3x40m1 100 ml Ha SN H2O4 flSavyMetals 250th flbro3 7AU Other Non- Radiologics rossMpha $Y 250 ml I000ml No Preservative Added n2so4 Ct Other specify 4MS lb Sample volume ifapreservativeisused Specify Type and Quantity of Preservative Comments Arru.ckX-tsSJuonch Q75c1 tapir I4ii0L presea 0r cvnIc pF OSjp LC4 Oflg J3er WerAk%\tr Fc CQt ckt/7 ATTACHMENT WHIITE MESA IJEANIUM MULL ffi1UELD DATA W0RSEIEET FOR GROUND WATER Description of Sampling Event Q4-.rrcct4 lJJer Sampler Location well name MU4 fl Name and initials ri4 Date and Time for Purging 11--6%and Sampling if different Well Purging Equip Usect Lpump or jaiter Well Pump if other than Bonnet Sampling Event .an.r%cr rn4 WIte Prey Well Sampled in Sampling Event MU pHBuffer7.O 7.0 pllBnffer4.O Specific Conductance IT uMHOSIcm Well Depth cu Depth to Water Before Purging .LS Casing Volume Well 35 .653h Well .367k Conduttiince avg -$pH of Water vg Well Water Temp avg 1454 Redox Potential EhflO4_Turbidity Weather Cond lov.CL\vO Extl Auth Temp.prior to sampling eventja TimeJW%O Gal Purged S3 Tilne tSbO.Gal.Purged Conductauce lS31 Conductance 539 pH_7a0 pH Temperature j14 L4 Redox Potential Bk 2.33 Turbidity Temperature Redox PotentialEh Cl Turbidity Temperature 19 Redox Potential Bk Ct 07 0. Mill Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP Date 2.25.07 Revision Page400f4I .1 TimeJS3O Gal Purged Conductance s3 pH_7.S Temperatur I4 .S Redox Potential Bit Z73 Time lLi5 Gal.Purged -cq..S Conductance 153k oH 72Z Mill Groundwater Discharge Permit Goudwater Mothtoriag Quality Assurance Plan QAP Date 11.1716 Revision Page 41 of 41 Volume of Water Purged SW pitjgRate Calculation Thrbithtv _______ Plow Rate in gpm 5/60 _____.33 Time to evacuate two casing volumes 2V T2V/Q 7Z Mn Number of casing volumes evacuated if other than two_ If well evacuated to dryness number of gallons evacuatect Name of Certified Analytical Laboratory if Other Than Energy Lab AWL .ce7-cr I4IflCcori La hJflQfallS $uuS Taken ckde SiSUle.Vohune indicate if oilier ihiOl as specified below Fil IcircleI Preservative Added $rcle \TOCs 3x4OinI .-NC Nutrients JZ 100 ml HO4 NØavyMetals All Other Non- Radiotogics y 250th 250 ml ft fiKo3 No Preservative Added JrossAipba Other specify 14Yiztt1 1W 1000w Sample volume it 112504 CD Ifaproservativeisused Specify Type and Quantity of Prnservative Comments Arrueck on c%t I43 Lncr -for r-t cRA Souvphn Putnf Pi.rn beEyxn telI 1r iao epJY cJt IO 163L .\ctt 1L4 JJcrt dLca-r P- JJerATher \t/AAa va1rihl 14OlAA prtsaL lM3 K.il sc .. Mill C-rourzdwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP Date 2.25.07 RevIsion Page 40 of 41 Temperature .44 Time OO GaL Purged 34.45 Conductance 3S pH Temperature it Redox Potential Eli YR Ct ATIIACIIMENT WHITE MESA URANIUM MILL FHEW DATA WOEKSHEET FOR GROUND WATER Description of Sampling Event t4fl Qutnrcr .rrottrj IJ%JcJtr Sampler Location welt name Name and initials Date and Time for Purging ij-iS 05S and Sampling if different Well Purging Equip Useck Lpnmp or Well Pump if other than Bennet Sampling Event MAr t.rotn4 lUt Prey Well Sampled in Sampling Event Al/Il pHBuffer7.O 7.0 pHBuffer4.O Specific Conductance 417 uMHOS/cm Well Depth IC Depth to Water Before Purging is Casing Volume Welt s3 .653k Well 367k Conductance avg .34 .O pH of Water vg .30 Well Water Temp avg 2j\Redbx Potential Bk 117 Turbidity .06 Weather Cond -t Extl Amb Temp.prior to sampling event TimejiI5S Gal Purged Time.ileaO__Gal Purged Conductance 3907 Conductance pH gg L.1nflCr32 LU LLaLUS....... Redox Potential srna...y 1.5 Turbidity Eli OS P....jp.....H.ra IL Redox Potential flTh iq TurltihP Time._Q.æSO Gal Purged p4.75 Conductance 3sT7 pH 73O Temperature 64 Redox Potential Eh HO u.tQ Mill Groundwater Discharge Perguit Date IL 7.06 Revisioiu Groundwater Monitoring Quality AssurnucePlan QAP Page4i of 41 TwbiditL_Turbidity__________________ Volume of Water Purged SW Pimpig Rate Calculation Flow Rate in gpm 5/60 _____.33 Time to evacuate two casing volumes 2V T2V/Q IXC Number of casing volumes evacuated if other than two_ If well evacuated to dryness number of gallons evacuated 1.4 Name of Certified Analytical Laboratory if Other Than Energy Labs LI or Vt Comments _prun1 an cke pla.M Ciacn 4. Amcco.Wc gmpk Taken frircle indicate If other t1IæaS specified below circle circle VOCs Sx4Oml Ha Nutrients HŁavyMetals 100 ml 2501i31 thI 112504 cr lIMO3 All Other Non- Radiologics 250m1 NoPreservativeAdded GressAlpha Other specify c4 14fr1k 1000m1 Samplevoiwue 112504 Ifapreservativeisused Specify Type and Quantity of Preservative tvtner i4IC0k...-ortsa/4 l.-ji ro ofl Le% tJn%et tOs ro1La4 Wcc.Mn tics1 tOI uo/ L1 1Arat 4X pqcjq Sna4 beican 5OtAnA a.t bflh t4t s4 PcA Cc Mill Groundwater Discharge Permit Date 2.25.07 Revision Groundwater Monitoring Quality Assurance Plan oAF Page 40 of 41 ATTACJMENT WL9IULT MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUND WATER Description ofSainplingEventITh Qt4t rau.pA tAUcJer Sampler Location well name Mv act Name and mitmis tnnti Date and Time for Purging aocs and Sampling if different_ Well Purging Equip Used Lpump or _bailer Well Pump if other than BennetJ2.._ Sampling Event sar4cr raun4 tsace Prey Well Sampled in Sampling Event MWk pI-Ifluffer7.0 7.0 pHBuffer4.0 Ll. Specific Conductance qq7 uMEOSIcm Well DepthS Depth to Water Before Purging C.41 Casing Volume Well IF.73 .65Th Well .367k Conductance avg pH of Water ªvg Well Water Temp avg L\IC Redox Potential EhDD Turbidity Weather Cond R- k-I c-toA LCL\J Extl Amb Temp.prior to sampling event tmeiOIS GaLPurged L..-b Time 103Ci GaiPurged 114S Conductance 4S Conductance 45 pH Temperature 14 Temperature 33 Redox Potential Eli t7HRedoxPotentialBkY1 Turbidity f6 Turbidity TimeJD4S Gal Purged TimellP Gal Purged MS Conductance________________Conductance 9O7 pFL -S pH Temperature t4 O\Temperature 114 DtS Redox Potential Eli 177 gedox Potential Eb \71 _______lu$-Q wArn cinrnnthwaerflEchargePeranit kouadwater Monitoring Qtuality Assurance Plan QAP Date 11.17.06 Revision Turbidity Page4l of4l Volume of Water Purged jping Rate Calculation Plow Rate 03 in gpm sI6 _____ Time to evacuate two casing volumes 2V T2V/Q gr Mn Number of casing volumes evacuated if other than twoL if well evacuated to dtyness number of gallons evacuatQct Name of Certified Analytical Laboratory if Other Than Energy Labs AWL ctrF t/tc- w4 hiigstnirnt $pgnnle Taken lidrele SIuiIe Vahinie iiuicnte if other ththlaAsneeifled below nd circle Preservative Added circle VOCs Nutrients 3x40z01 lOOmI qjf WN u2so4 CV Heavy Metals 250101 fl lii4o All Other Non- Radiologics 250 ml Nc Preservative Added OrossAlpha Other specify e4 iZk9fjM L000mI Sampl volume .9 112504 Ifapreservativeisuse Specify Type and Quantity of Pitservative Comments.Atruttk p4 oqsc crtAA Saayte tjnn .4 Psrn.4 TLnn.r i4oitAa..nrpSPflI fi3fl 11 -j-jc.ils-7-Lc rr ri%i$ enArr æ4L eankpq Ps J15 hJI Uert Wct c4ccxr \rJ4rMrr fcrlrL 4cxirLg C$DI %YIoii.\on rnpJ Date 2.25.07 Revision Page4Oof4I AflACHMENT VVWITE MESA URANIUM MILL FIELD DATA WORYISEEET FOR GROUND WATER Description of Sampling Event 4Th Qrer tOttnot lALJer Sampler Location well name MA Name aOd initials r14 Date and Time for Purging it-S -o and Sampling if different_ Well Purging Equip TJsect Lpmnp or _bailer Well Pump if other than Bennet Sampling Event tsesrttr i.rau.n4 %tjpkct Prey Well Sampled in Sampling Event_Pl4 act pHBufferl.0 7.0 pflBuffer4.0 Lj.Q Specific Conductance uMHOS/cm Well DepthS 10 Depth to Water Before Purging 71.Ic Casing Volume Well ai .653h Well .367h ConduØtance avg HZ pH of Water ivg Well Water Temp avg ITVTO Redox Potential Eli gg Turbidity 76 Weather Cond Cto cJ CC1J Extl Auth Temp.prior to sampling event Yc pH_CSI Temperature 13 S9 Redox Potential Eli 89 Turbidity Time...flOQ Gal Purged Conductance________________________ pL. I-i fl Temperature .D L4 Time flQ GaLPuiged Conductance___________________ MS pH DM6 Temperature 7f Redox Potential Th Turbidity Time 1540 GaL Purged 3C3 Conductance 30 pH 7.OG Temperature Redox Potential Eli aot Mill Groundwater Discharge Permit Groundwater Monitoring Quality Msurance Plan QAP time USS GaLPnrged I.S Conductance__________________ Redox Potential Eli Ji MIII Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP Date 11.1716 Revision Turbiditic Page of 41 Volume of Water Purged WI giog Rate Calplation Plow Rate in gpm 5160 .33 Time to evacuate two casing volumes 2V T2VIQ $7 Mn Number of casing volumes evacuated if other than two_ If well evacuated to dryness number of gallons evacnate Name of Certified Analytical Labontory if Other Than Energy LabQ Ak/L car-c Vc- ypjpmmmiII Ssunule Taken fdrde SÆSple Volume indicate If other ihSl aS specified bet Fifitere circle Preservative Added circle VOCs ijilirients Sx4OniI 10Dm JICL 3N VI HØavyMetals 250th1 All Other Non- Radiologics 250 ml No Preservative Added GrossAlpha 1000nil It 112504 Otherspecify 19 1114 %t Sample volume Ifapreservativeisused Specify Type and Quantity of Preservative Comments Arrua on ctt H41 ifor Otac asiA Sthsrpln ecnb Pont un Part flflMi 14o11.oLt presasll bef\t%n ak 1tcI Jr VZTJ\cu Sle.S uUert IDCtS teor Wer.Mtr P013L4 doui c.otck rnx.n tact Mill Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP AnACHMENT WWTJE MIESA U1AMUM MuLL FMELD DATA WORKSINJEET FOR GROUND WATER DesciiptiOn of Sampling Event 4Th Qtpa4er tOLkGt tAicthr Sampler Location well name M.A Name arid initials t4 Z4ai4 -i4 Date and Time for Purging 10-CD and Sampling if different_ Well Purging Equip Used Lpump or _bailer Well Pump if other than Bennet_.jjl..... Sampling Event nr%ct-rav.n4 ik4c Prey Well Sampled in Sampling Event AJ/A pllBufferl.O 7.0 pHBuffer4.O L1.C Specific Conductance TC1 uMl-IOSfcm Well Depth SC Depth to Water Before Purging Is Casing Volume Well SQ 3q .653h Well .367h Conductance avg 17401 pH of Water vg Well Water Temp avg .0 Redox Potential El 4S Turbidity Weather Cond Do crco-c Extl Amb Temp.prior to sampling event _______TimeUljSSO__Gal Purged pS ______________________Conductance rio i-j ______________pH 7.3 Temperatum 391 ______Redox Potential El Li Ut Turbidity GQ _____________TimeJS50 Gal Purged3L3 _________________Conductance 170 ______________pH Temperature 13 g-S Redox Potential El Date 2.25.07 Revision Page 40 of 41 TimeJlZaO__Gal Purged G.G Conductance ljt Temperattffe_14riltp Redox Potential Eh_LI flrhitv fl Time.ifl2._Gal Purged OS Conductance 17 O5 Temperature .03 Redox Potential El MIII Grouadwater Distharge Permit Groundwater Ititoriag Quality Assurance Plan QAP Date 11.17.06 Revision Page 41 o141 Volume of Water Purged WI Pumping R4Q Clculgtion Flow Rate in wn 5160 _____.33 Time to evacuate two casing volumes 2% T2V/Q 237 t-n Number of casing volumes evacuated if other than two oa If well evacuated to diyness number of gallons evacuate$ Name of Certified Analytical Laboratoiy if Other Than Energy Labs MAIL ISeror At AmcAcn Ae Lxh tgnmS $Emple Taken circle SiinUle Volume Indicate it other iSi aS specified below Filtered cirelel Preservative Added circle VOCs 3x40nl .-RCL cX Nutrients HØavyMetals All Other Non- Radiologics LW 100 ml 250S 250ml ff 4C .ifzO4 jtsTO3 jN NoPreservativeAdded GrossMpba Other specify L-TJflituIb 1000ml Sample voLume /t 112504 If preservative is used Specify Type and Quantity of Preservative nicO flaa.er 14a11e1aa repcant Sourtpltn eucrWbn%R.r4t Srpi5 tA1tfl JOA cit 4tcar 04 jerk%itr oirej-s-LC4t inr.rc4 Pu6rcz an u.cslcr a0 lnOc C.oIJ at4s sJ no Sc Comments Arrunl ..dtA nfl MITACIFIIMENT WIIITE MESA URANIUM LL FKELR DATA wonsigir FOR GROUND WM1ER Description of Sampling Event 4Th Qun.rer roanc %a.Lr Sampler Location well name MyJ .i-Name and initials rsnnrt na1 n-i-I Date and Time for Purging JI IS and Sampling if different__________________ well Purging Equip Useth Lpump or _bailer Well Pump if other than Bennet OkJ Sampling Event Ark-6.r4 iJdt Prey Well Sampled in Sampling EventJ4_so pHBuffer7.0 7.0 pHBuffer4.0 L1.C specific Conductance_1CLjiMROS/cm Well Depth 13 Depth to Water Before Purging Casing Volume 4fl Well 3S .653h 3H Well 367h Conductance avg pH of Water vg Well Water Temp avg 13.LCk Rºdo Potential Eli IWt Turbidity .3S Weather Cond PCAr4L1 CC%A5X Extl Amb Temp.prior to sampling event caM eJ1wS Gal.Purged Conductance_________________ Time 4SQ GaL Purged Conductance 1100 ILL pH LSS p0 Temperature 15 TemFratum Ii Itedox Potential Eli Redox Potential Eli Turbidity fl Turbidity TimeU2.A__GaL Purged T.Lk.p Time IcL\S Gal Purged 32 Conductance Jctpa.Conductance 79 5Q pH_.SD-pH Temperature_______ Mill Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP Date 2.25.07 Revision Page 40 of 41 Temperature ii .q Redox Potential Eli \b j.4 Redox Potential Eli 19 1rb Mill Groundwater Discharge Permit Date 1117.06 Revisiorc G-rowidwat3r Mothtoring Quality Assurance Plan QAP Page 41 of 41 Ththidkv Volume of Water Purged iwiiiin Rate Calculation PlowRateQ ingpm 5/60 _____.33 Time to evacuate two casing volumes 2VT2VIQflCMsn Number of casing volumes evacuated if other than two If well evacuated to dryness number of gallons evacuat Name of Certified Analytical Laboratoxy if Other Than Energy Lab Von Nutrients Heavy metals All Other Non Radiologics 49 3x40 ml 100 ml 250 250 ml MAIL /Srtr V-c Amcrccvt boes4 L4 %r@ tD ft act JN z$4 LIMO3 Ct No Preservative Added Pnmmentc eri\t.-nfl J4-.4 NUO A.....r ores en Snm Taken Idr4e $le Volume Indicate If other ibtthnsspecified below Filtered fc$rcje Preservative Added circle GrossAiPha l000mI it JZSO4 Other specify bS PæjAflJL SamplS volume Ifapteservativeisused Specify Type and Quantity of Preservative .$r nw aoktIJO1 kUc jJerkhrr LtntAcItc\ SGurltpq titnf Pr0r mkJs arjy OLL3 ek LeG sift atIU$ tQccoc Mu.rs IAc4C zSrc% ccA\ btecvAn MO OS RJL th Mill Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP Date 2.25.07 Revision Page 40 of 41 Time_________Gal Purged Conductance_______________________ pIL Re Potential Eli. ATTACHMENT WHITE MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUND WATER Description of Sampling Event qth as4cr rrowk UJ.\c.r Sampler Location well name tAJ Name and initials itvtcr IhiUj Date and Time for Purging IL-ti otc and Sampling if different Well Purging Equip Used pump or Well Pump if other than Bennet Sampling Event gTk Qacs4cr rowk Jchc Prey Well Sampled in Sampling Evenl Al fit pHBuffer7.0 7.0 pHBuffer4.0 4.0 Specific Conductance uMHOSIcm Well DepthS Depth to Water Before Purgin__Casing Volume Well .653h Well .36711 Conductance avg pH of Water avg Well Water Temp avg .\.Q Redox Potential Eli 0.9 Turbidity Weather Cond._________________Extl Amb Temp.prior to sampling event 735 Gal Conductance tL pH Ternperatu Purged________Time Gal Purged Conductance 77 pH Tempenturn Redo otential EliRedoxPotentialEhUCCt TurbiditY 3iidity Time Conductance GalPurge4 7AV Tern turn___________________ Potential Eh Mill Groundwater Discharge Permit Date 1L17.06 Revision Groundwater Monitoring QuatityAssurancePlaflQAP Page 41 of 41Turbidity_______________Volume of Water Purged When Field Parameters are Measured illhiipigg Rate Calculation Plow Rate in gpm Time to evacuate two casing volumes 2V S/60 _______________T2V/Q___________________ Number of casing volumes evacuated if other than two____________________________ If well evacuated to dryness munber of gallons evacuated_____________________________ Name of Certified Analytical Laboratory if Other Than Bnergy LabsJqcc.an vi Lb sd-ocs ye of Samnle $pg Taken Icirde SiniOle Vohanie findicate if other tithii as specified below Filtered Preservative Added dude dude VOCs Nutrients J9 Clj 3x4Ond lOOm NJ HCL R2O4 flavyMetals Jy 250th lIMO3 Ct All Other Non- Radiotogics 250 ml No Preservative Added GrossAlpha i5ther specify recri L000mi Sample volume 12804 It preservative is used Specify Type and Quantity of Preservative Comments /-\c-u4 Li-s 1A O73b look 5c rctwtc\cs3 csnct LI cA SckIndts tt.-J-0140 Ifl-L.L Time GaL Purged Conductance pH_ Temperature // Redox PotentiaEhl. tarbDcc oY Date 2.25.07 Revision Page400f4l Mill Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP AflACIE4IIENT WIHEJITE MESA URANIUM MuLL FIELD DATA WORKSEJEET FOR GROUIlD WATER Description of Sampling Event ITh Qutrs4cr rcutpej tIjcr Sampler Location well name MvJ GS Name and initialt 1461141 -ri-I Date and Time for Purging -0 and Sampling if different__________________ Well Purging Equip Used Lpump or Well Pump if other than BenneQ.jj1 Sampling Event aar%cr roi.n4 W4.4e Prey Well Sampled in Sampling EvenL.thL3 pHBuffer7.O 7.0 pflBuffer4.O Lj.L Specific Conductance tjq uMHOS/cm Well Depth Depth to Water Before Purging 7o-Casing Volume Well .653k Well 367k Conductance avg J1 of Water ªvg Well Water Temp avg Th Red9x Potential Bk Turbidity Weather Cond Ct GLX 121 Extl limb Temp.prior to sampling event 4O c. Time__Gal Conductance Purged__________Time Gal Purged Conductance________________________ pH Temperature pH Temperature Redox Pote94Ek Turbidity_ Redox Poialk Turbytf Time Gal Purged Conductance pH Temperature .-Redox Poteftth. MvJ MIII Groundwater Discharge Permit Grouudwater Momtorwg Quality Msurance Plan QAP Date 1117.06 lievisioic Page4l of4l Turbidity Vohune of Water Purged Wh Turbidity__r ping Rate C1ctdaiJpn Flow Rate in gpm 8/60 _____.33 Time to evacuate two casing volumes 2V T2V/Q .ao Mv Number of casing volumes evacuated if other than two_ If well evacuated to dryness number of gallons evacuated. itt Name of Certified Analytical Laboratory if Other Than Energy Labs LI Amci We4 LtJ /SiF /1 Smp5 Taken fcfrcle SØlutVolume Indiciteifother gbthl as specified below Filtered f$rde Preservative Added cfrciel VOºs Nutrients HØavyMetals IIN if 3x4Onil 100m1 zsothi 111 VN 117804 ffij All Other Non- Radiologics 250 ml No pmservative Added GrossAlpba rn 1000ml I%117804 bther specify 4.cn4 .Zk9nIb Sample volume ifapreservativeisuse SpecifyType and Quantity of Peservative Dtaat Qs M\AJ jQiert Weraktr MIII Groundwater Distharge Permit Groundwater Monitoring Quality Assurance Plan QAP AnACHMENT WifiTE MESA URANIUM MIlL P11W DATA WORKSllEET FOR GROUND WATER Description of Sampling Event 4Th Q41.rowtot ljJcaAtr Sampler Location well maine Mw lb Name and initials Tnp l-Ioil4ci i-14 Date and Time for Purging J\I.-clc and Sampling if different Well Purging Equip Useck Lpump or_bailer Well Pump if other than Bennet Sampling Event Awwr Wdtc Prey Well Sampled in Sampling Event MYL pFlBuffer7.Q to pHBuffer4.0 L1 Specific Conductance S4T1 uMHOS/cm Well Depth Depth to Water Before Purging 71 CL Casing Volume Well .43 .653k Well .367k Conductance avg 1447.5 pilaf Water vg 7.02 Well Water Temp avg 14 t3 Redox Potential 37l Turbidity Weather Cond._________________ExtL Auth Temp.prior to sampling event 10 TimeL Conductance Gal Purged_______ pH TemperatUrQ /z Redox Tuty Ii Conductance_______________________ Time Gal Purged Conductance pH Temperature flcxrm\ic.cx\M\J 11 Date 2.25.07 Revision Page 40 of 41 pH_ Temperatuy Redoential Eli yar RedPal Eh wan Groundwater Discbarge Prit Groundwater Moaoring Quality Assurance Plan QAP Date 11.17.06 Revision Page 41 of 41 Volume of Water Purged pjg Rate Calculation Flow Rate in gpm 5160 _____ Time to evacuate two casing volugies 2V T2VIQ IIL Mw 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 AWL Serstr t/ct Cs Nutrients HeavyMetals All Other Non- Radiologics .itL 4tL2L 3x401n1 100 ml 250th 250m1 ICL Cy LIMO3 NoPreservative Added Gross Alpha Other specify 4nke4 49i11n ib fl 1000 ml Sample volume H2504 If preservative is used Specify Type and Quantity of Preservative 17 SumS Taken Ietrclel Sihjile Volume Indicate if other than aS sneclfled Filtered circle Preservative Added circle ama Mill Groeacwater Discharge Peanit Grouadwater Monitoring Quality Mstnnce Plan QAP Date 2i5.07 Revision Page 40 of 41 ATTACU4IIENT W1HIIITE MESA JRAMUM MULL F1UEKS WiTA WOR1SEEET FOR GROU1kID WATER Description of Sampling Event_Q4obr rrawU iar Sampler Location well name MW L4 Nameandinitials1w 140iLrL Date and Time for Purging ZO-iS and Sampling if different AtA Well Purging Equip Uset Xpump or_bailer Well Pump ii other than Beunet CA Sampling Event flc4t6cr 6..a bA Prey Well Sampled in Sampling Event is pHBuffer7JL_lC pHBuffer4.O 4.0 Specific Conductance ITT uMHOSIcm Well Depth 124.7 Depth to Water Before Purging 104.15 Casing Volume Si Well IC .03 .653k Well irn 367h Coædubtanceavg pHofWªtervg C.77 Well Water Temp avg 14 Rdox Potential Shaic5 Turbidity Weather Cond Extl Anib Temp.priorto sampling event nc Redox Potential Eli 317 -itt Time I3O Gal Purged Q1 Conductance MH tine .a Conductance ocPu 33 383 Time nao GaLPurged Conductpnce 3M5 pHC.ll Li Temperature Jg.LTempeniture Redox Potential 1L12a Eli 35 Redox Potential Eli Turbidity 27t Turbidity Time $o Gal Purged IIS Conductance 13 pH .75 Temperature 1L4.tU L.ic TempenitureI43 Redox Potential Eli 3I CD twill ClroundwateK Discbarge Permit Date IL 17.06 Revision ouudwater lViothtoxing Quality Assurance Plan QAP Turbidity__________ Volume of Water Purged Whew Turbidity. Page of 41 pjgRate Calculation Flow Rate ip gpm 5/60 .3 Time to evacuate two casing volumes 2V T2V/Q 97 Number of casing volumes evacuated if other than two_ if well evacuated to dryness number of gallons evacuated Name of Certified Analytical Laboratoiy if Other Than Energy Lab at tA ye of Samule SmS Taken citcie SiuSle Yclunne ildicate it other ilLS as specified below flitered circle Preservative Added circle \TOCs YS 3x40m1 ..HCL Yd Nutrients 100 ml Nz$04 HØavyMetals All Other Non- Radiologics Cr 250th 250 ml liMo3 I5N NoPreservative Added GrossAlpha Other specify l000mI SamplS volume 112504 If preservative is used Specify Type and Quantity of Preservative Piresert4 4r/Comments rruJ on Purctc twt 64fl%plqq s4c IIMS M4aa kes.a4 M%-4c tiMc v3cI cJct Pr flW be L.xiJe An aF 11SO Puircot wclfn-z cj tj ATTACHMENT WifiTE MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUND WATER Description of Sampling Event O30b cc iA0 n4kt Scull plc Sampler Location well name I\Name and initials tpncr 11o Date and Time for Purging ft3C ic and Sampling if different__________________ Well Purging Equip Useck Lpump or_bailer Well Pump if other than Bennet_________ Sampling Event cr Scscstipk Prey Well Sampled in Sampling Event /14 pffBuffer7.0 7t pHlluffer4i .Q Specific Conductance C3g1 uMELOSIcm Well Depth j..\.33 Depth to Water Before Purging Casing Volume Well .653h WelL ftJ /f4 .367h Condutance avg pH of Water ª.vg Well Water Temp avg___________RŁdw Potential Eli Turbidity Weather Cond._________________ExtL Auth Temp.prior to sampling event 70 Time Gal Conductance 14 Purged 11 0g-f Temperature tS Redox Potential Eli Turbidity iS Mill Groundwater Discharge Permit Groundwater Monitoring Quality Msurance Plan QAP Date 2.25.07 Revision Page4Oof4l Jot tfrvGt f/a/I 751c jyaitCO o4 SeS Redo9hal Eli Tidity Time Gal MIII Groundwater Discharge Permit Date 11.17.06 Revision Groundwater Monitoring Quality Assurance Plan QAP Page 41 of 41 ZUtURLILV Turbidity Volume of Water Purged When Field Parameters are Measured iu4 pjg Rate Calculation Flow Rate 03 in gpm Time to evacuate two casing volumes 2V smo 24 T2VIQ_________________ Number of casing volumes evacuated if other than two If well evacuated to dryness number of gallons evacuated fl/ti- Name of Certified Analytical Laboratory if Other Than Energy Lab Type of Sample Sample Taken fthicle Sample Volume indicate if other than as specified below Filtered circle Preservative Added circle VOCs 3x40m1 HCL Nutrients HØavyMetals 100 ml 250 ml HSO4 cfl INO3 14 All Other Non- Radiologics 250 ml No Preservative Addd GrossAlpha Other specify 4j 1000ml Sample volume 1IzSO4 If preservative is used Specify Type and Quantity of Preservative Comments rOW 3tO rrructi oil S4 LcA SJe SJF of GAro7n 1595 i3O c%tr6 i1 140U rnkcr t3 Prcsc.ti fl Scriylz-c c0 ScrLpL ad1aX Cjto.r Ocor Etnn -.- Mill Grniedwater Discharge PeTS Groundwater Monitoring Quality Assurance Plan QAP Date 2.25.07 Etevision Page 40 of 41 Time Gal Purged Conductance_______________________ Redox Potential Eli______________ 1t4 LLlILr4 AflACRMENT IL WHliTJE MESA URANIUM MIILL F1IELD DATA WORKSHEIET FOR GROUND WATER Description of Sampling Event Qt3obcr rrnwL iiSr Sampler ...M4 iL Name and initialsLocationwriRflftnj____________________________________ Date and Time for Purging lO-13-O%and Sampling if different Mn Well Purging Equip LJseth Xpump or_bailer Well Pump if other than Bennet Ci EL Sampling Event t%o\nc rroaeuk u4.qe Prey Well Sampled in Sampling Event /tltn 32 pllBufferl.Q 74 pllBuffer4.0 4.0 Specific Conductance Utl uMROSIcm Well DepthS 12 .33 Depth to Water Before Purging 19 Casing Volume Well .653k 311 Well .361k Conductaneavg pH of WÆteEªvg Well Water Temp avg_________Redox PotŁætial fll Turbidity Weather Cond v.an1 Extl Amb Temp.prior to sampling event iime 1054 Conductance Cal Purged_______ .7C Tirne2 Conductance Gal Purged 11 Temperature Redox Potential .75 1.14 pH Temperature Redox ntial /Z Bk aci Eh Time Gal Purged /AConductance PH Tempera Re Potential Eh_ -- 1U47 Mill Groundwater Discharge Permit Date flJ7Q Retjjsion Groundwater Monitoring Quality Assurance Plan QAP Turbidity Volume of Water Purged %suFin pping Rate Calculation Turbidity Plow Rn gprn sioo ________________ Number/of casing volumes evacuated if other than two Page 41 of 41 NameofCertifiedAnalyticalLaboratoryifOthermanEnergyLabs AWL sc ofSannle mS Taken Icircie Smaple Volume thdlte if other tliS as.sneclfled below Filtered fclrcle Preservative Added circle VOCs Nutrients 3x4Oml 100 ml Qqci ua HO4 HØavyMetals AU Other Non- RadioLogics Rj 250w 250 ml 171103 ft No Preservative Added GrossAipha Other specify 1000w Sample volume 112504 39 If preservative is used Specify Type and Quantity of Preservative Comments u.rctc 041 atqa csJch4 If well evacuated to dryness number of gallons evacuated. Time to evacuate two casing volumes 2V T2V/Q is.I /A s.l tur- uk 1111 u1 Ltec-.r Mn4 si PrSs t4 tj-l2l Ib46t bcc.t t-LV 4aQn \j.ttr\-ry-Sni sik-bcctzc ATTACHMENT WI1Th MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUND WATER Description of Sampling Event 04 obcr rotsncL hah.r Sampler Location well name MA Name and initia1s5ngee 14.11 iAs4 1-14 Date and Time for Purging b-IS-and Sampling if different hi 1/3 Well Purging Equip Usect .Lpump or _bailer Well Pump if other than Rennet OE Sampling Event c4aICt eountUJoJte-Prey Welt Sampled in Sampling Eventsm ph Buffer 7.0 .._...._70 pH Buffer 4.0 Specific Conductance 9i7 uMROS/cm Well Depth 132 ..S Depth to Water Before Purgiug 11.05 Casing Volume Well 31 .aC .653h Well .ut 367k Conductance avg aP1s pH of Water avg C.S Well WaterTemp avg fl .fQ Redox Potential flh2 13 Turbidity 7. Weather Cond.________________Extl Amb Temp.prior to sampling event 14 tme_gjSO Gal Purged Conductance 39SG Time OQC Gal PuEged 11.5 Conductance 17 pH .o.4 pH Temperature C4 Temperature 13 Redox Potential BhU2RedoxPotentialBk2.94 Turbidity Turbidity Time OU4S Gal Purged 2415 Conductance If LYL p11 Temperature RedoxPotentialBh 04 Mill Groundwater Discharge Permit tjoundwater Monitoring Quality Assurance Plan QAP Date 2.25.07 Revision Page 40 of 41 Tnmnehi Time loW GaL.Purged 31.3 Conductance Ji.S Redox Potential Bk 103 L41 Mill Groundwater Discharge Permit Date 11.17.06 Revision Groundwater Monitoring Quality Assurance Plan QAP Page 41 of 41 utuiuu.y Turbidity Volume of Water 3k gmpjpgRate Calculation Flow Rate QJ in gpm Time to evacuate two casing volumes 2V 5/60 _____________T2V/Q atcc tAn Number of casing volumes evacuated if other than two_______________________ If well evacuated to dryness number of gallons evacuated i.//4 Name of Certified Analytical Laboratory if Other Than Energy Labs Type of Samnie Sample Taken circle Samjile Volume indicate if other ththl as specified below Filtered circle Preservative Added circle VOCs 14 3x40m1 HCL Nutrients 100 ml H2$04 HØavyMetals All Other Non- Radiologics ii 250th1 250 ml I-NO3 15 No Preservative Added GrossAlpha Other specify 1000mI Sample volume 112504 If preservative is used Specify Type and Quantity of Preservative Comments AvruJ on tnnt-qJiiLc oi$%t1 cvof Pr bela aI i\reA UJCII cpr i Mvtc ynk-c cnAeJ tYiQ t4eau4 tALt andt SC%r1LCS .L i-Wfl LS \t3tAe-4t..ria.j isa rntA v.3 .i t44k Cbkep.L tS Lzn2n_6PPLtr rirrzrj t4419 4iirnt4nA pwje Date 2.25.07 Revision Page400f4l ATTACHMENT WRITE MESA URANIUM MILL FIELD DATIWOMCSREgT FOR GROUND WATER Description of Sampling Event Jioeie cTh4k/7g_ Location well name$j/Name and initiatC7mrc Date and Time for Purging I/i 7OQnd Sampling if different Well Purging Equip Usect .iS or _bailer Well Pwnp if other than Bennet i//4- Sampling EventjLitLlj Øiawvhnarit Prey Well Sampled in Sampling EvenLY/4- pHlluffer7.O lit pHBuffer4.0 4/4 Specific Conductance c7C7 uMHOSIcm Well Depth /VIQ Depth to Water Before Purging Casing Volume Well .653h Well .36Th Conductance avg pH of Water ivg Well Water Temp avg Redox Potential flh__..Turbidity Weather Cond.__________________ma Amb Temp.prior to sampling event Time GaL Purged Conductance_____________________ pW Temperature Mill Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP Time Gal Purged_______Thue Gal Purged Conductance pH 7.81 Conductance pH 714t Temperature 43 Temperature Redox PotentiaL Turbidity Redox Potential Eli 257 Eh Turbidity Time_________Gal Purged pH Temperature Conductance___________________________ /41/4 Pntentinl hI Redox Potential Eli Mill Groundwater Discharge Permit Date Lt.IW6 Revision Groundwater Monitoring Quality Assurance Plan QAP Turbidity Page4l of4l Volume of Water Purged When Field Parameters are Measured_ Pumpjgjtate Calculation Flow Rate QJ in gpm 5160 _____ Time to evacuate twJgyolumes 2V _______2VIQ ____________________ Number of casing volumes evacuated if other than two. Jf well evacuated to dryness number of gallons evacuate Name of Certified Analytical Laboratory if Other Than Energy .t----14c iv MJr4I3t Type of Sample Sample Taken circle Sample Volume Indicate if other thid as specified below Filtered circle Preservative Added circhi VOCS 3x40m1 HCL Nutrients HØavyMetals 100m1 250S 42 Rz$O4 YN IMO3 All Other Non- Radiologics 250 ml No Preservative Added GrossAlpha l000mI 112504 Other specify Sample volume If preservative is used Specify Type and Quantity of Preservative Mill Groundwater Discharge Permit Date 2.25.07 Revision Groundwater Monitoring QualitY Assurance Page 40 of4l ATTACHMENT WIIIITE MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUND WATER Description of Sampling Event M$LL uJ-ocf4er Sampler Location well name Mv Name and initialsitnna-ILltct ti-I Date and Time for Purging 10.13-0%and Sampling if different A.m Well Purging Equip Useth pump or_bailer Well Pump if other than Bennet 1X Sampling Event JMOAI1ILJ Goiitr Prey Well Sampled in Sampling Event iJt/j pRBufferl.0 7.0 pHBuffer4.0 4.0 Specific Conductance 17 uMROS/cm Well Depth Depth to Water Before Purging 77.05 Casing Volume 17 Well 3C .653k Well ufl4 .367k Conductance avg 21 pH of Water ivg Well Water Temp avg fl Rid9x Potential Eli 213 Turbidity 7a Weather Cond.________________Extl Amb Temp.prior to sampling event tine Gal Purged_______Time Gal Purged Conductance______________________Conductance_________________________ Temperature Redox Potential Eli Turbidity pH Temperature Redox Potential Time Gal Purged_______Time Gal Purged Conductance______________________ Conductance________________________ oH pH Temperature Redox Potential Bk________________Redox Potential Ehor PH- Mill Groundwater Discharge Permit Date 11.17.05 Revision Groundwater Monitoring Quality Assurance Plan QAP Page 41 of 41 UIULULJ_________________________________ULULLIZLJ Volume of Water Purged MeftPiHd-Fnramosswnre Mrwnpcd ping Rate Calculation now Rate in gpm Time to evacuate two casing volumes 2V siso ______________TZV/Q ..IV4J MA Number of casing volumes evacuated if other than two If well evacuated to dryness number of gallons evacuated ti/A Name of Certified Analytical Laboratory if Other Than Energy Labs ..s at type of Sample Samole Taken circle SaEnile Volume indicate if other fljg as specified below Filtered circle Preservative Added circle Von 3x40m1 HCL Nutrients Ii 100 ml 12S04 HØavyMetals All Other Non- Radiologics Grossfijpha Other specify 25lnl 250 ml 1jOOnæ Sample volume Ct No Preservative Added 112504 If preservative is used Specify Type and Quantity of Preservative DL\p\c flM Mill Groundwater Discharge Permit Date 2.25.07 Revision Groundwater Monitoring Quality Assurance Plan QAP rage 40 of 41 AflAC11MENT WifiTE MESA URANIUM MILL FIELD DATA WOIIUCSEEET FOR GROUND WAjllgR Description of Sampling Event Jfl-.q%ei %47 Sampler 7/ Location well name /2f/j /7 Name and initials Mn /4heer Date and Time for Purging and Sampling if different_____________ Well Purging Equip Useck .j4ump or_bailer Well Pump if other than Bennet_________ Sampling Event /L4jI 4tJn27 Piiev Well Sampled in Sampling Event MZ pHBuffer7.0 pflBuffer4.0 Specific Conductance 147 uMROS/cm Well Depth /Z Depth to Water Before Purging 16 12 Casing Volume Well /Ls .653h Well .367h Conductance avg 32T p11 of Water avg Well Water Temp avg 117 pdteiidat 1126/Turbidity Weather Cond SS 4/el Extl Atnb Temp.prior to Æanipling event R-1t Thn /29k GaLPurged Yt IC Thncilfl_GaL Purged 2/VsC Conductance kg Conductne_______________ pH________________pH Temperature______________Temperature /713/ Redox Potential Rh 261 Redox Potential Eli 28 Turbidity_____________ Turbidity_______________ Time/fl GaLPurged uf.SS Conductance ____________________ n11 Temperature /2 Itedox Potential Eh7c/ ice.______ Time /900 Conductance GaL Purged 2Z 8C pH Temperature________________ RedoxPotentialEh /6 jll-GroundwaterDischarge Permit Date 11.17.06 Revision Groundwater Monitoring Quality Assurance Plan QAP ULULUEU.J Turbidity Volume of Water Purged When Field Parameters are Measured 52.01 Egpipitg Rate Calculation Page4l of 41 FlowRateQ ingpm S/60 33 Time to evacuate two casing volumes 2V T2VIQ 44j 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 Lab -1- type of Sample Sanmie Taken circle Sainjile Volume lildicati if othr ihaSiiS specified below Filtered circle Preservative Added circle VOCS 3x401n1 YN ..-RCL YN Nutrients HŁavyMetals lOOmI 2501W H$O4 lIMO3 thN All Other Non- Radiologics 250 .. No Preservative Added GrossAlpha L000SI 112504 Other specify Sainpl volume If preservative is used Specify Type and Quantityof Preservative Mill Grouadwater DkcharPeniilt Groundwater Monitoring Quality Assurance Plan QAP ATTACHMENT BfffE MESA URANRJM MILL M1B2UID DATA WOEKSHEZf Wik QROUND WATER Description of Sampling Event jtc0-1fl4ep-/Jik4 Sampler Mtnnn .nA intcTo /jLocationwellnamei7iJLe Date and Time for Purging /2-91 and Sampling if different______________ Well Puiing Equip Useck Jnp or bailer Well Pump if other than Rennet Sampling Event____________________Prey Well Sampled in Sampling Event______ pflBuffer7.O pHBuffer4.0 Specific Conductance uMHOSIcm Well Depth 33 Depth to Water Before Purging tO Casing Volume Well .653b Well .367k Conduefance aVg pH of WitØr ivg Well Water Temp avg___________RerncPoSial fib Turbidity Weather Cond t4i A/his-fr AVtl Amb Temp.priorto sampling event__ time //25T Gal Purged_______Tilpia GaL Purged Conductance S3 TiC Conductance f//I PH c-97 pH Temperature /Y /3 Temperature Redox Potential Bk 23 Redox Potential Bh_ Turbidity Turbidity kItLaa%stnn.b____________________________________________________ Temperature Date 2.25.07 Revision Page 40 of 41 Time GaL Purged nce /ur Time________GM Purged________ Redox Potential Eh Redox Potential Eli. Mill GroundwaterThscharge Permit Date 11.17.06 Revisiorn Groundwater Monitoring Quality Assurance Plan QAP Page 41 of4l uwawiy Turbidity Volume of Water Purged When Field Parameters are Measured_____________________ gping Rate Calculation Flow Rate in gpzn Time to evacuate two casing volumes 2V 5/60 ______________T2V/Q Afl 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 Labt... Imi of Sample Sample Taken circle Sairnle Volume indicate If other thai.As specified Soil Filtered circle Preservative Added circle VOCs Nutrients TN 34oil loom Ha SN H$O4 YN HØavyMetals All Other Non- 2sQikfl 250m1 HNO3 Ct NoPresrvativeAdded Radiologics GrossAipha 1000ml H2S04 Other specify Sample volume if preservative is used Specify Type and Quantity of Preservative Comments 94/47 lifI Ceo4f61 f/i ftIUL-C dve rr /V3t cr-Ztiwrr.l tZ.ZL/4s1/ AflACRMENT WifiTE MESA URAMUM MILL FRELD DATA WORXCSHEET FOR GROUND WATER Description of Sampling Event .33nes.t6tr -fLtgg4 /AJafl Sampler Location well name mia 32 Name and initials 74u f4/v/gf Date and Time for Purging /2 2/I and Sampling if different Well Purging Equip Used 4imp or_bailer Well Pump if other than Bennet LACk .tI Sampling Event turM5 iktTttt Prey Well Sampled in Sampling Event pHBuffer7.0 pHBuffer4.O Specific Conductance T87 nMHOS/cm Well Depth /32 Depth to Water Before Purging Casing Volume Well 22 .653h 311 Well .36Th conduCtunceavg pHofWÆtervg.. Well WaterTemp avgJ3 3S RØdrnc Potential iTh/fl Turbidity /5- Weather Cond .%Ici M1h //J Extl Amb Temp.prior to sampling event Time ggcs Gal Purged Z. Conductance 378s- pH Temperature_13.10 Redox PotentialEh 192 Turbidity 77 TimeC Gal Purged 13-.2 Conductance Temperature Redox Potential Bk L4 Time2 I/JttC Gal Purged Conductance pH iS Temperature_______________ Redox Potential Eli Turbidity Time /090 GaLPurged conductance 51C pH 4.ZZ Temperature i3 RedoxPotentialEh 170i4_ Mill Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP Date 2.25.07 Revision Page 40 of4l It_b3w 57t peiovC .4 SIi MIII Groundwater Discharge Permit Date IL 11.06 Revision Groundwater Monitoring Quality Assurance Plan QAP Page 41 of 41 TurbV1 Tut Volume of Water Purged When Field Parameters are Measured 6.L.c gping Rate Calculation How Rate 03 in gpm Time to evacuate two casing voluipes 2V 5/60 T2V/Q .226 Number of casing volumes evacuated if other than two to JLwelI eaGUaWltfldflueS%iWmberVtg1OnSVflbated_s- Name of Certified Analytical Laboratory if Other Than Energy Labs //4- Type of Sample $amle Taken cfr SamPle Volume Indicate if other lbs as specified below Filtered fcinie Preservative Added circle VOCs 3x40m1 YN Nutrients lOOml RO4 BØavyMetals it 2501n1 it lIMO3 Vt All Other Non- Radiologics 250 ml No Preservative Added GmssAlpba I000mI H2SO4 CY2 Other specify Sample volume If preservative is used Specify Type and Quantity of Preservative comments 4euy-4ijdmec If .j12 /atn Ai jtc21t AL __________ /je/A4 srLeJ ftM /2 rjsv f4idt2s 4/L$1 z2t irhi-r /ti j//c//AE tar//fl Mill Gronndwater Dizcharge Permit Date 225.U7 Revision Groundwater Monitoring Quality Assurance Plan QAP Page 40 of4l AflACIIMENT Whiff MESA URANWM MILL FIIIELD DAT WOERSHEET FOR GROUND WATER Description of Sampling EventJjeernhe2..nmtjiieveit Location well name4W nj4 Nanieahd initials iev.a 4htte7 Date and Time for Purging bH and Sampling if different_________________ Well Pinging Equip Use _pump or _bailer Well Pump if other than Bennet_________ Sampling Event 6V Prey Well Sampled in Sampling Event_42J26 pH Buffer 7.0 7-pH Buffer 4.0 Specific Conductance 7Y uM Well Depth Depth to Water Before Purging Casing Volume 4fl Well .653h Well .367k Conductance avg pH OfWater ivg Well Water Temp avg___________Redox Ptsthtl Sb Turbidity Weather Cond._________________Extl Auth Temp.prior to sampling event rime /y.i GaLPurged_______Tiflie Gal.Purged Conductance Conductance___________________ pHf.f3 pH Temperature IS-3C Temperature Redox Potential Eli 23 Redox Potential Eli Turbidity Turbidity Time Gal Purged_______Time Gal Purged Conductance___________________Conductance_____________________ PH pH Temperature Temperature Redox Potential Eli_______________Redox Potential Eli b.aLK Mill Groundwater Discharge Peruilt Groundwater Monitoring Quality Assurance Plan QAP Date 11.17.06 Revision Pvrhidihr Page 41 of 41 Volume of Water Purged When Field Parameters are Measure ppping Rate Calculation Flow Rate in gpm 8/60 _____ Time to evacuate two casing volumes ZV 2V/Q ____________________ Number of casing volumes evacuated if other than two if well evacuated to dryness number of gallons evacuated________ Name of Certified Analytical Laboratoiy if Other Than Energy Labs Ii of Sam$e Sample Taken circle Samule Volume indicatØifother thiS as specified heIST Filtered circle Preservative Added circle yOGa Nutrients HavyMetals 3x4OinI bOnd 250th1 .-111 112804 11N03 All Other Non-250ni1 NoPreservativeAdded Radiologics GrossAipha 1000 ml IV 112504 Ct Other specify Samplvolume If preservative is used Specify Type QuAntity of Pthservative rn.nents ci e-r .1 z.n.4CrnpcThtifiJr7-o3t b.arc ATTACHMENT WIITE MESA URANIUM MILL FIELD DAT WORKShEET FOR GROUND WATER Description of Sampling Event -e--tL-.-ciaane/iv44 Location well name MbtJ 1S Name and initials tern JZie.f Date and Time for Purging eli and Sampling if different Well Purging Equip Usest $ump or_bailer Well Pump if other than Rennet_________ Sampling Event_____________________Prey Well Sampled in Sampling Event______ 7-0 pHBuffer4.O 4o ______Well Depth Casing Volume Well .653k Well .367k pH of Water vg ________Redox Potential liii Turbidity _________________Extl Mnb Temp.prior to sampling event Redox Potentialmh\______________ Turbidity Time Gal Purged Conductance___________________ TM Time________ Conductance_____ oW Tamnarctttrn Redox Potential Bk hi mki 3a Redox Potential Eh Mill Gwundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan QAP Date 2.25.07 Revision Page4Oof4I pH Buffer 70 Specific Conductance 7xj uMHOSIcm Depth to Water Before Purnincz_________ Conductance aval___________________ Well Water Temp avg Weather Cond._________________ tine Gal Purged_______Tiine Gal Purged Conductance_________________ Conductance___________________ pH pH Temperature Temperature J________________Redox Potential Eli ._________________Turbidity Gal Purged Mill Groundwater Discharge Pennit Groundwater Monitoring Quality Assurance Plan QAP Date 11.17.06 Revision ThrhhIihz Page 41 of 41 Volume of Water Purged When Field Parameters are Measure gjpping Rate Calculation Flow Rate in gpm 5160 _____ Time to evacuate two casing volumes 2V 2V/Q _________________ Number of casing volumes evacuated if other than two If well evacuated to dryness number of gallons evacuated________ Name of Certified Analytical Laboratoiy if Other Than Energy Lab Type of Samule Sanni Taken circle Sample Volume indicate If other thai as specified below Filtered circle Preservative Added circle VOCs 3x40m1 .-HCL YN Nutrients lOOm RØavyMetals cD 25Dm 1t ZINC3 All Other Non- Radiologics 250 ml No Preservative Added GrossAipha l000m1 112504 Other specify SamplS volume If preservative is used Specify Type and Quantity of Preservative ENERGYLABORA TORIES INC 2393 Sail Creek H4/zway 82601 R0 Box 3258 Caspe6 WY82602 Toil Free 888.235 0515 307235.0515 Fax 307234.1639 caspenenergy/ab.com wwwenergy/ab.corn LABORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 11/12/08 Project October Monthly Groundwater Collection Date 10/13/08 1330 Lab ID C08100775-001 DateReceived 10/16/08 Client Sample ID MW 14 Matrix Aqueous MCL Analyses Result Units Qualifier RL QCL Method Analysis Date By METALS DISSOLVED Manganese 2110 ugL 10 E200.8 11/03/08 2022/ts Uranium 65.8 ugL 0.30 E200.8 10308 2022 ts 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 ENERGYLABORA TORIES INC 23.3 Salt Creek Hiqbway 82601 P0 Sex 3258 Casper WY 82502 Toll Free 888235.0515 307235.0515 Pa 307.234.1539 casper5energylab.cem www energylab corn LARORA TORI ES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corn Report Date 11/12/08 Project October Monthly Groundwater Collection Date jo/i 3/Q5 1117 Lab ID C081 00775-002 DateReceived 10/16/08 Client Sample ID MW 26 Matrix Aqueous MCLJ Analyses Result Units Qualifier RL QCL Method Analysis Date By METALS DISSOLVED Manganese 1550 ug/L 10 E200.8 11/03/08 2029/ts Uranium 60.4 ug/L 0.30 E200.8 11/03/08 2029 ts 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 ENERG YLABORA TORIES INC 2393 Sail Creek Hihway 8260/P0 Box 3258 Caspei WV82502 _______Toil Free 888.235 0515 307235 0515 Fax 307234.1539 caspenWenergy/ab.com wwwenergy/ab.com LASORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 11/11/08 Project October Monthly Groundwater Resample of Organic Collection Date 10/30/08 1340 Lab ID C08110031-001 DateReceived 11/01/08 Client Sample ID MW 26 Matrix Aqueous MCLI Analyses Result Units Qualifiers RL QCL Method Analysis Date By VOLATILE ORGANIC COMPOUNDS Acetone ND ugL 40 SW82608 11106/080902 jir Benzene ND ug/L 2.0 SW8260B 11/06/08 0902 jlr Carbon tetrachloride ND ugL 2.0 SW8260B 11/06/08 0902 jlr Chloroform 630 ug/L 200 SW8260B 11/06/08 0824 jlr Chloromethane ND ug/L 2.0 SW8260B 11/06/08 0902 /jlr Methyl ethyl ketone ND ug/L 40 SW8260B 11/06/08 0902 jlr Methylene chloride 9.4 ug/L 2.0 SW8260B 11/06/08 0902 jlr Naphthalene ND ugIL 2.0 SW8260B 11/06/08 0902 jlr Toluene ND ug/L 2.0 SW8260B 11/06/08 0902 /jlr Xylenes Total ND ug/L 2.0 SW8260B 11/06/08 0902 jir Surr 2-Dichlorobenzene-d4 103 %REC 80-120 SW8260B 11/06/080902 jir Surr Dibromofluoromethane 119 %REC 70-130 SW8260B 11/06/08 0902 /jlr Surr p-Bromoltuorobenzene 93.0 %REC 80-120 SW8260B 11/06/08 0902 /jlr Sum Toluene-d8 91.0 %REC 80-120 SW8260B 11/06/08 0902 /jlr Report RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit ENERG YLASORA TORIES INC 2393 Sail Creek H4/iway 82601 RU Box 3258 Casper WY82602 To//Free 888.235.0515 307235 0515 Fax 307234.1639 casperenergy/ab.com wwwenergv/ab.com LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 11/12/08 Project October Monthly Groundwater Collection Date 10/13/08 1033 Lab ID C081 00775-003 DateReceived 10/16/08 Client Sample ID MW 32 Matrix Aqueous MCLI Analyses Result Units Qualifier RL QCL Method Analysis Date By METALS DISSOLVED Cadmium 2.53 ugL 0.50 E200.8 11/03/08 2103 ts Iron 8950 ug/L 30 E200.7 11/03/08 1428 cp Manganese 5550 ug/L 10 E200.7 11/03/08 1426 cp Nickel 62 ug/L 20 E200.7 11/03/08 1426/cp RADIONUCLJDES DISSOLVED Gross Alpha minus Rn 1.8 pCi/L E900.1 11/04/08 1747 cgr Gross Alpha minus Rn Precision 0.5 pCi/L E900.1 11/04/08 1747 cgr Gross Alpha minus Rn MDC 0.6 pCi/L E900.1 11/04/08 1747 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 ENERGYLABORA TORIES INC 2393 Sail Creek Hikway 82601 PO Box 3258 Caspe WY82602 ____________roil Free 888.235.0515 307235 0515 Fax 307234.1639 casperenergy/ab.corn www.energy/aA corn LA/bRA 10/b/ES LABORATORY ANALYTICAL REPORT Client Den son Mines USA Corp Report Date 11/12/08 Project October Monthly Groundwater Collection Date 10/14/08 0805 Lab ID C08100775-004 DateReceived 10/16/08 Client Sample ID MW 60 Matrix Aqueous MCLI Analyses Result Units Qualifier RL QCL Method Analysis Date By METALS DISSOLVED Cadmium ND ug/L 0.50 E200.8 11103/08 2245 /ts Iron ND ug/L 30 E200.7 11/03/08 1430 Icp Manganese ND ugIL 10 E200.7 11/03/08 1430/cp Nickel ND ugIL 20 E200.7 11103108 1430 /cp Uranium ND ugIL 0.30 E200.8 11103108 2245 Its RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.007 pCi/L E900.1 11/04/08 1747/cgr Gross Alpha minus Rn Precision 0.3 pCi/L E900.1 11/04/08 1747 cgr Gross Alpha minus Rn MDC 0.6 pCi/L E900.1 11/04/08 1747 cgr VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW82SOB 10/28/08 0425 jlr Benzene ND ugIL 1.0 SW8260B 10/28/08 0425 IjIr Carbon tetrachloride ND ug/L 1.0 SW8260B 10/28/08 0425 jlr Chloroform 19 ug/L 1.0 SW8260B 10/28/08 0425 jir Chioromethane ND ug/L 1.0 SW8260B 10/28/08 0425 jir Methyl ethyl ketone ND ugIL 20 5W8260B 10/28/08 0425 jir Methylene chloride ND ug/L 1.0 SW8260B 10/28/08 0425 jlr Naphthalene ND ugIL 1.0 SW8260B 10/28/08 0425/jlr Toluene ND ug/L 1.0 SW8260B 10/28/08 0425 /jlr Xylenes Total ND ug/L 1.0 SW8260B 10/28/08 0425/jlr Sum 12-Dichlorobenzene-d4 102 %REC 80-1 20 SW82608 10/28/08 0425 Ijlr Sum Dibromofluoromethane 116 %REC 70-1 30 SW8260B 10/28/08 0425 IjIr Surr p-Bromofluorobenzene 87.0 %REC 80-120 SW82608 10/28/08 0425 /jlr Surr Toluene-d8 103 %REC 80-120 SW82608 10/28/08 0425 IjIr 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 Not detected at minimum detectable concentration ENERG YLABORA TORIES INC 2393 Sail Creek Hirhway 82601 P0 Box 3258 Casprn WY82602 Toil Free 889235.0515 3072350515 Far 3072341639 casperSnergy/ab.com wwwenergylab.com LABOR/I TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 11/12108 Project October Monthly Groundwater Collection Date 10/13/08 1033 Lab ID C08100775-005 DateReceived 10/16/08 Client Sample ID MW 65 Matrix Aqueous MCL/ Analyses Result Units Qualifier RL QCL Method Analysis Date By METALS DISSOLVED Cadmium 2.44 ugIL 0.50 E200.8 11/03108 2252 /ts Iron 9460 ugIL 30 E200.7 11/03108 1434 cp Manganese 5630 ugIL 10 E200.7 11103108 1434 cp Nickel 63 ug/L 20 E200.7 11103108 1434 cp RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 1.6 pCiIL E900 11/04/08 17471 cgr Gross Alpha minus Rn Precision 0.5 pCiIL E900 11/04/08 1747 cgr Gross Alpha minus Rn MDC 0.6 pCiIL E900.1 11/04/08 1747 cyr 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 VLASORA TORIES iNC -2393 Sail Creek Hi/iway 82601 R0 Sax 3258 Casper tVV82602 Tall Free 885235.0515 307235.0515 Fat 307234.1639 caspercenergy/ab.com www energylab corn LAI3ORA TORIES Lab ID C08100775-006 Client Sample ID Trip Blank LABORATORY ANALYTICAL REPORT Report Date 11/12/08 Collection Date 10114/08 DateReceived 10/16/08 Matrix Aqueous Analyses Result Units MCL/ Qualifier RL QCL Method Analysis Date By VOLATILE ORGANIC COMPOUNDS MCL Maximum contaminant level Client Project Denison Mines USA Corp October Monthly Groundwater Acetone ND ug/L 20 SW8260B 10/27/08 2128 jlr Benzene ND ug/L 1.0 SW8260B 10/27/08 2128 /jlr Carbon tetrachioride ND ug/L 1.0 SW8260B 10/27/08 21281 jlr Chloroform ND ugL 1.0 SW8260B 10/27/08 2128 /jlr Chioromethane ND ug/L 1.0 SW8260B 10/27/08 2128 /jlr Methyl ethyl ketone ND ug/L 20 SW8260B 10/27/08 2128/jlr Methylene chloride ND ug/L 1.0 SW8260B 10/27/08 2128 /jlr Naphthalene ND ug/L 1.0 SW8260B 10/27/08 2128 /jlr Toluene ND ug/L 1.0 SW8260B 10/27/08 2128 jir Xylenes Total ND ugIL 1.0 SW8260B 10/27/08 2128 /jlr Surr 2-Dichlorobenzene-d4 105 %REC 80-120 SW8260B 10/27/08 2128 jlr Sum Dibromofluoromethane 121 %REC 70-130 SW8260B 10/27/08 2128 /jlr Sum p-Bromofluorobenzene 96.0 %REC 80-1 20 SW82608 10/27/08 2128 /jlr Sum Toluene-d8 96.0 %REC 80-120 5W8260B 10/27/08 2128/jlr Report RL Analyte reporting limit Definitions QCL Quality control limit MDC Minimum detectable concentration ND Not detected at the reporting limit LALORA TORIES gV ENERGYLABORA TORIES INC 2393 Sail Creek Hbway 8250/P0 Box 3258 Caspe WY82602 ____________To/I Free 888235.0515 307235.0515 Far 307.234.1539 casperenergyIab.ccm www.energylab.com ANALYTICAL SUMMARY REPORT November 12 2008 Denison Mines USA Corp 6425 Hwy 191 Blanding UT 84511 Workorder No C08100775 Quote ID C1640 POC Wells Monthly Groundwater Sampling Project Name October Monthly Groundwater Energy Laboratories Inc received the following samples for Denison Mines USA Corp on 10/16/2008 for analysis Sample ID Client Sample ID Collect Date Receive Date Matrix Test C08100775-001 MW 14 10/13/08 1330 10/16/08 Aqueous Metals by ICP/ICPMS Dissolved C081 00775-002 MW 26 10/13/08 1117 10116108 Aqueous Metals by ICP/ICPMS Dissolved Cancelled Sample C08100775-003 MW 32 10/13/08 1033 10/16/08 Aqueous Metals by ICP/ICPMS Dissolved Gross Alpha minus Rn222 and Uranium C08100775-004 MW 60 10/14/08 0805 10/16/08 Aqueous Metals by ICP/ICPMS Dissolved Gross Alpha minus Rn222 and Uranium SW8260B VOCs Standard List C08100775-005 MW 65 10/13/08 1033 10/16/08 Aqueous Metals by ICP/ICPMS Dissolved Gross Alpha minus Rn222 and Uranium C08100775-006 Trip Blank 10/14/08 0000 10/16/08 Aqueous SW8260B 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 Report Approved By Summary Report Page of ENERGYLASORA TORIES INC 2393 Sail CreekHihway 82601 P0 5ox3258 Caspe WV82602J77oI/Fee 688.235 0515 307235.0515 Pa 307234.1639 caspetanergyIab.ccm www.energylab.com LABORA TORIES QAIQC Summary Report Client Denison Mines USA Corp Report Date 11/12/08 Project October Monthly Groundwater Work Order COSI 00775 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method E200.7 Batch Ri 10275 Sample ID MB-081031A Method Blank Run ICP2-C_081 103A 11/03/08 1145 Iron ND mg/L 0.005 Manganese ND mg/L 0.0003 Nickel ND mg/L 0.004 Sample ID LFB-081031A Laboratory Fortified Blank Run ICP2-C_081 103A 11/03/08 1150 Iron 1.08 mg/L 0.030 108 85 125 Manganese 1.01 mg/L 0.010 101 85 125 Nickel 1.01 mg/L 0.050 101 85 125 Sample ID C08100667-OO2CMS2 Sample Matrix Spike Run ICP2-C_081 103A 11/03/08 1350 Iron 2.42 mg/L 0.030 104 70 130 Manganese 2.05 mg/L 0.010 99 70 130 Nickel 1.92 mg/L 0.050 96 70 130 Sample ID C08100867-OO2CMSD2 Sample Matrix Spike Duplicate Run ICP2-C_081103A 11103/08 1354 Iron 2.39 mg/L 0.030 102 70 130 1.2 20 Manganese 2.05 mg/L 0.010 99 70 130 0.1 20 Nickel 1.93 mg/L 0.050 96 70 130 0.6 20 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit ENEAG VL4BORA TORIES INC 2393 Salt Creek 11way 82801 RO Box 3258 Casper WY82602 ____________Toll Free 888.235.0515 307235.0515 Fax 307234.1639 casperenergy/aA corn www energy/at corn LASO/ZA TOP/ES QA/QC Summary Report Client Denison Mines USA Corp Report Date 11/12/08 Project October Monthly Groundwater Work Order C08100775 Analyte Result Units RI %REC Low Limit High Limit RPD RPDIimit Qual Method E200.8 Batch RI 10289 Sample ID IRS Cadmium Manganese Uranium Method Blank ND mg/I ND mg/L ND mg/I E-05 5E-05 1E-05 Run ICPMS2-C_081103A 11/03/08 1207 Sample ID IFS Cadmium Manganese Uranium laboratory Fortified Blank 0.0494 mg/I 0.0499 mg/I 0.0496 mg/I 0.0010 0.0010 0.00030 99 100 99 Run ICPMS2-C_081 103A 85 115 85 115 85 115 11/03/08 1214 Sample ID C08100564-OOIBMS4 Cadmium Manganese Uranium Sample Matrix Spike 0.0482 mg/I 0.0635 mg/I 0.0785 mg/I 0.010 0.010 0.00030 96 96 104 Run ICPMS2-C_081103A 70 130 70 130 70 130 11/03/08 1948 Sample ID C08100564-OOIBMSD4 Cadmium Manganese Uranium Sample Matrix Spike Duplicate 0.0481 mg/I 0.0623 mg/I 0.0782 mg/I 0.010 0.010 0.00030 96 93 103 Run ICPMS2-C_081 103A 70 130 0.2 70 130 2.2 70 130 0.4 11/03/08 1955 20 20 20 Sample ID C08100175-OO5AMS4 Cadmium Manganese Uranium Sample Matrix Spike 0.0458 mg/I 4.84 mg/I 0.0557 mg/I 0.010 0.010 00030 87 106 Run ICPMS2-C_081103A 70 130 70 130 70 130 11/03/08 2259 Sample ID C08100775-OOSAMSD4 Cadmium Manganese Uranium Sample Matrix Spike Duplicate 0.0462 mg/I 4.95 mg/I 0.0550 mg/I 0.010 0.010 0.00030 87 105 Run ICPMS2-C_081 103A 70 130 0.7 70 130 2.2 70 130 1.3 11/03/082305 20 20 20 Method E900.1 Batch GA-0183 Sample ID MB-GA-0183 Gross Alpha minus Rn Method Blank 0.2 pCi/I Run BERTHOID 770_081030A 11/04/081513 Sample ID ICS-GA-0183 Gross Alpha minus Rn laboratory Control Sample 25.6 pCi/I 96 Run BERTHOID 770_081030A 70 130 11/04/08 1513 Sample ID TAP WATER-MS Gross Alpha minus Rn Sample Matrix Spike 25.5 pCi/I 94 Run BERTHOID 770_081030A 70 130 11/04/08 1747 Sample ID TAP WATER-MSD Gross Alpha minus Rn Sample Matrix Spike Duplicate 23.7 pCi/I 87 Run BERTHOID 770_081030A 70 130 7.2 11/05/08 0305 23 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 Not detected at minimum detectable concentration EIERGY AIIORA TORIE ENERO YLABORA TORIES INC -2393 Salt CreekHihway 82601 RU Box 3258 Caspe1c WY 82602 roll Free 888.2350515 307235.0515 Fax 307234.1639 casper6energylab.com nwwenergy/ab.com QAIQC Summary Report Report Date 11/12/08 Work Order C08100775 Client Denison Mines USA Corp Project October Monthly Groundwater Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method SW8Z6OB Batch Ri 10004 Sample ID 102708_LCS_3 Laboratory Control Sample Run SATURNCA_081027C 10/27108 1037 Benzene 9.6 ug/L 1.0 96 70 130 Carbon tetrachloride 9.6 ug/L 1.0 96 70 130 Chloroform 9.9 ugIL 1.0 99 70 130 Chloromethane 9.4 ugIL 1.0 94 70 130 mp-Xylenes 18 ug/L 1.0 88 70 130 Methyl ethyl ketone 95 ug/L 20 95 70 130 Methylene chloride 9.5 ug/L 1.0 95 70 130 Naphthalene 8.7 ug/L 1.0 87 70 130 o-Xylene 8.4 ug/L 1.0 84 70 130 Toluene 9.3 ug/L 1.0 93 70 130 Xylenes Total 26 ug/L 1.0 87 70 130 Surr 12-Dichlorobenzene-d4 1.0 106 80 120 Surr Dibromofluoromethane 1.0 110 70 130 Surr p-Bromofluorobenzene 1.0 102 80 130 Surr Toluene-d8 1.0 103 80 120 Sample ID 102708_MBLK_6 Method Blank Run SATURNCA_081027C 10/27/08 1236 Benzene ND ug/L 1.0 Carbon tetrachloride 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 2-Dichlorobenzene-d4 1.0 106 80 120 Surr Dibromofluoromethane 1.0 113 70 130 Surr p-Bromofluorobenzene 1.0 90 80 120 Surr Toluene-d8 1.0 100 80 120 Sample ID C08100843-O28CMS Sample Matrix Spike Run SATURNCA_081027C 10/28/08 0736 Benzene 210 ug/L 10 103 70 130 Carbon tetrachloride 200 ugh 10 102 70 130 Chloroform 240 ug/L 10 112 70 130 Chloromethane 180 ug/L 10 88 70 130 mp-Xyienes 360 ug/L 10 91 70 130 Methyl ethyl ketone 2000 ug/L 20 98 70 130 Methylene chloride 190 ug/L 10 96 70 130 Naphthalene 190 ug/L 10 94 70 130 o-Xylene 190 ug/L 10 94 70 130 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit EIERGY LALIORA TORIES ENERGYLABORA TORIES INC 2393 Sail Creek H4hway 82601 P0 Box 3258 Caspe.c WY82602 roil Free 888235.0515 307235.0515 Fax 307.234.1639 casperenergy/ab.com wwwenergy/aL.cam QAIQC Summary Report Report Date 11/12/08 Work Order C081 00775 Client Denison Mines USA Corp Project October Monthly Groundwater Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method SW8260B Batch Ri 10004 Sample ID C08100843-O28CMS Sample Matrix Spike Run SATURNCA_081027C 10/28/08 0736 Toluene 200 ug/L 10 99 70 130 Xylenes Total 550 ug/L 10 92 70 130 Sum 2-Dichlorcbenzene-d4 1.0 101 80 120 Surr Dibromofluoromethane 1.0 101 70 130 Surr p-Bromofluorobenzene 1.0 100 80 120 Surr Toluene-d8 1.0 101 80 120 Sample ID C08100843-OZ8CMSD Sample Matrix Spike Duplicate Run SAflJRNCA_081027C 10/28/08 0814 Benzene 210 ug/L 10 106 70 130 3.4 20 Carbon tetrachloride 210 ug/L 10 107 70 130 20 Chloroform 250 ug/L 10 118 70 130 4.6 20 Chtorcmethane 180 ug/L 10 89 70 130 0.5 20 mp-Xylenes 370 ug/L 10 93 70 130 1.7 20 Methyl ethyl ketone 2200 ug/L 20 109 70 130 10 20 Methylene chloride 210 ug/L 10 106 70 130 9.5 20 Naphthalene 190 ug/L 10 94 70 130 20 o-Xylene 200 ug/L 10 101 70 130 7.8 20 Toluene 200 ug/L 10 99 70 130 0.4 20 Xylenes Total 570 ug/L 10 95 70 130 3.8 20 Sum i2-Dichlorobenzene-d4 1.0 98 80 120 10 Surr Dibromofluoromethane 1.0 109 70 130 10 Surr p-Bromofluorobenzene 1.0 94 80 120 10 Surr Toluene-d8 1.0 99 80 120 10 Qualifiers RL Analyte reporting limit 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 Pa g e of PL E A S E PR I N T - Pr o v i d e a s mu c h In f o r m a t i o n na nn a i h l n Co m p a n y Na m e Ie J rs o p i il l Re p o r t Ma i l Ad d r e s s fe 3v g s- O 7 1r LS J / In v o i c e Ad d r e s s Pr o j e c t N a m e PW S Pe r m i t Et c Sa m p l e Or i g i n Oo o a /4 o n i n 4 m1 St a t e Co n t a c t Na m e Pj o n e / F a x Em a i l J2 g 4/ n e L/ 3 1 c K i 2 2 / / 7 2 2 1 / 9I i t i 1 C f h l 3 O f l f f l 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 EP N S t a t e C o m p l i a n c e Ye s No El Sa m p l e r Pl e a s e Pr i n t It 4 V t V 1 t f H- o- v t Qu o t e / B o t t l e Or d e r S4 y % i º 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 DW A2 L A GS A ED D / E O 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 St a t e OL E V E L I V DO t h e r 0N E C fl Zn .g a l c si _ c o g fl c tc CT TR I X g- /z 2 ii J- t h J i- h i ZZ / _ Z/ Z z L / i- i .. - Co n t a c t EL I pr i o r to fo r c h a r g e s an d RU S H sa m p l e su b m i t t a l 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 Je r I D t P L 6L f b c2 n fr Jj On cu s t Bo t t l e s co o l e r s 9n _ _ j In t a c t Ma t c h Sig n a t u r e 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 rt J /9 32 5v i zs 1t j t c i k ki e4 J k . J a_ _ _ _ _ _ _ _ _ _ Co l l e c t i o n Da t e /O i 3 O i iO - i i f l /O 1 3 f l 1t i w __ _ _ _ Co l l e c t i o n Ti m e il l 13 3 0 /O 3 3 c ss -- - Cu s t o d y Re l i n q u i s h e d b y $l Da l a l f l m e 5i a n a j T1 di 7 p i i M 76 ic C% i4 /1 2 M K / / V e 7Z I_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Re c o r d Ra l i n q d i s h e d b y pn n r oa t e r r i r n e MU S T be l at u r e Re c e i v e d by pr i n t 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 Cli e n t La b Dis p o s a l Re c e i v e d b y La b o r a t o r y Da l e / T i m e Sig n a t u r e 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 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 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 EN F R G Y .l B /1 JR / i Energy Laboratories Inc VVorko rde Receipt Checklist Denison Mines USA Corp C08100775 Login completed by Corinne Wagner Date and Time Received 10/16/2008 945 AM Reviewed by Received by cm Reviewed Date Carrier name Next Day Air Shipping container/cooler in good condition Yes No Not Present LI 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 jJ 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 2C Water VOA vials have zero headspace Yes No fl No VOA vials submitted Water pH acceptable upon receipt Yes No Not Applicable Contact and Corrective Action Comments None ENERGVL.4SORA TORIES iNC -2393 Sail Creek Hibway 82601 -AC Box 3258 Caspe1c WV82602 ____________Tall Free 888.235.0515 307235.0515 Fax 307234.1639 oaspenenergy/ab.com www.energylab.com L/4BORA TORIES CLIENT Denison Mines USA Corp Date 12-Nov-08 Project October Monthly Groundwater CASE NARRATIVE Sample Delivery Group C08100775 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 CERTFICATIONS USEPA WY00002 FL-DOH NELAC E87641 Califomia 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.energyIab.com THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT ENERGYLABORA TORIES INC 2393 Sail CreekHiqbway 82601 P0 Box 3258 Caspec WY82602 Toil Free 888235.0515 307235.0515 Fax 307234.1699 caspoitenergy/ab.corn ivww.energy/ab corn LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 01/05/09 Project December Groundwater Collection Date 12/09/08 1407 Lab ID C08120444-001 DateReceived 12/11/08 Client Sample ID MW 14 Matrix Aqueous MCL/ Analyses Result Units Qualifiers RL QCL Method Analysis Date By METALS DISSOLVED Manganese 2300 ugIL 10 E200.7 12/30/08 1650 cp Uranium 48.3 ug/L 0.30 E200.8 12/15/08 2142ts 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 LARORA TORIES ENERGVLABORA TORIES INC 2393 Sail CreekHtway 8260 P0 Box 3258 Caspac WV82602 Toll Free 883235.0515 307235.0515 Pa 307234.1639 casperenergy/aL.com www.energylab.comEtERGY LABO//4 TOP/ES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 01/05/09 Project December Groundwater Collection Date 12/09/08 1432 Lab ID COAl 20444-002 DateReceived 12/11/08 Client Sample ID MW 26 Matrix Aqueous MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By METALS DISSOLVED Manganese 1120 ug/L 10 E200.7 12/30/08 1654/cp Uranium 62.1 ug/L 0.30 E200.8 12/15/08 2149/ts VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 40 SW8260B 12/15/08 1729 /jIr Benzene ND ug/L 2.0 SW8260B 12/15/08 1729/jIr Carbon tetrachloride ND ug/L 2.0 SW8260B 12/15/08 1729/jlr Chloroform 1300 ug/L 200 SW8260B 12/15/08 1651 /jlr Chioromethane ND ug/L 2.0 SW8260B 12/15/08 1729 /jlr Methyl ethyl ketone ND ug/L 40 SW8260B 12/15/08 1729 /jlr Methylene chloride 60 ug/L 2.0 SW8260B 12/15/08 1729 jir Naphthalene ND ug/L 2.0 SW8260B 12/15/08 1729 /jlr Toluene ND ug/L 2.0 SW8260B 12/15/08 1729 /jlr Xylenes Total ND ug/L 2.0 SW8260B 12/15/08 1729 jir Surr 2-Dichlorobenzene-d4 105 %REC 80-120 SW8260B 12/15/08 1729 jlr Surr Dibromofluoromethane 124 %REC 70-130 SW8260B 12/15/08 1729 jir Sum p-Bromofluorobenzene 102 %REC 80-1 20 SW8260B 12/15/08 1729 /jlr Surr Toluene-d8 98.0 %REC 80-1 20 SW8260B 12/15/08 1729 /jIr 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 ENERGYLABORA TORIES INC 2393 Salt Creek Hibway 82601 P0 Box 3258 Casper WY82602 Toll Free 885235.0515 3072350515 Fax 307234.1639 caspenPenergylali corn wnienergylab.cornEIERGY LASORA 7CR/ES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 01/05/09 Project December Groundwater Collection Date 12/09/08 1050 Lab ID C08120444-003 DateReceived 12/11/08 Client Sample ID MW 32 Matrix Aqueous MCI Analyses Result Units Qualifiers RI QCL Method Analysis Date By METALS DISSOLVED Cadmium 2.61 ugL 0.50 E200.8 12/15/08 2156/ts Iron 9020 ugh 30 E200.7 12/30108 1658 cp Manganese 5540 ugI 10 E200.7 12/30/08 1658/cp Nickel 59 ug/L 20 E200.8 12/15/08 2156 ts RADIONIJCLIDES DISSOLVED Gross Alpha minus Rn 5.8 pCiL E900 12/22/08 1848 cgr Gross Alpha minus Rn Precision 0.8 pCiIL E900.1 12122/08 1848 cgr Gross Alpha minus Rn MDC 0.4 pCi/I E900.1 12/22108 1848 /cgr Report RI Analyte reporting limit MCI Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration ENERO YLASORA TORIES INC 2393 Sail Creek HIghway 82601 P0 Box 3258 Caapei WV82602 Toll Free 888.235.0515 307235 0515 Fax 307234.1639 caspenPenergylab.com ir.vwenergy/ab.comEIERCY LA/JO/lA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 01/05/09 Project December Groundwater Collection Date 12/09/08 1452 Lab ID C08120444-004 DateReceived 12/11/08 Client Sample ID MW 60 Matrix Aqueous MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By METALS DISSOLVED Cadmium ND ug/L 0.50 E200.8 12/15/08 2202/ts Iron ND ugL 30 E200.7 12/30/08 1702 cp Manganese ND ug/L 10 E200.7 12/30/08 1702 cp Nickel ND ugL 20 E200.8 12/15/08 2202/ts Uranium ND ug/L 0.30 E200.8 12/15/08 2202/ts RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.9 pCi/L E900.1 12/22/08 1848 cgr Gross Alpha minus Rn Precision 0.4 pCi/L E900.1 12/22/08 1848 cgr Gross Alpha minus Rn MDC 0.4 pCi/L E900.1 12/22/08 1848 cgr VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 5W8260B 12/15/08 1613 /jlr Benzene ND ug/L 1.0 SW8260B 12/15/08 1613 /jlr Carbon tetrachlortde ND ug/L 1.0 5W8260B 12/15/08 1613 /jlr Chloroform 36 ug/L 1.0 SW8260B 12/15/08 1613 /jlr Chloromethane ND ug/L 1.0 5W8260B 12/15/08 1613/jlr Methyl ethyl ketone ND ug/L 20 SW8260B 12/15/08 1613 jir Methylene chloride ND ug/L 1.0 SW8260B 12/15/08 1613 jir Naphthalene ND ug/L 1.0 SW62606 12/15/08 1613 /jlr Toluene ND ug/L 1.0 SW8260B 12/15/08 1613/jIr Xylenes Total ND ug/L 1.0 SW8260B 12/15/08 1613 fIr Surr 12-Dichlorobenzene-d4 96.0 %REC 80-120 SW8260B 12/15/08 1613/jlr Sum Dibromofluoromethane 136 %REC 70-130 SW8260B 12/15/08 1613/jIr Surr p-Bromofluorobenzene 96.0 %REC 80-120 5W8260B 12/15/08 1613/jlr Surr Toluene-d8 97.0 %REC 80-120 SW8260B 12/15/08 1613 /jlr 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 Spike recovery outside of advisory limits ENERGYLASORA TORIES INC 2393 Sail Creek Hiq/iway 82601 P0 Sax 3258 Caspe4c WY82602 Ta/I Free 888.235.0515 307235.0515 Fax 307234.1639 caaperenergy/aA cam www.energylab.com LALORA roivr.c LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 01/05/09 Project December Groundwater Collection Date 12/09/08 1050 Lab ID C08120444-005 DateReceived 12/11/08 Client Sample ID MW 65 Matrix Aqueous MCI Analyses Result Units Qualifiers RL QCL Method Analysis Date By METALS DISSOLVED Cadmium 2.61 ug/L 0.50 E200.8 12115/08 2317 Its Iron 8870 ugIL 30 E200.7 12/30108 1706 cp Manganese 4540 ugIL 10 E200.8 12/15/08 2317/ts Nickel 60 ug/L 20 E200.8 12/15/08 2317 /ts RADIONUCLI DES DISSOLVED Gross Alpha minus Rn 4.7 pCi/I E900.1 12/22/08 1848 cgr Gross Alpha minus Rn Precision 0.8 pCi/L E900.1 12122/08 1848 cgr Gross Alpha minus Rn MDC 0.4 pCi/L E900.1 12122/08 1848 cgr Report RI Analyte reporting limit MCI Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration ENERG YLABORA TORIES INC 2393 Sail CreekHibway 8260 P0 Box 3258 Caspe4c WY82602 Toll Free 885235.0515 3072350515 Pa 307234.1639 casperenergy/ab.com www.energylab.comEISERCY LAI3ORj1 TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 01/05/09 Project December Groundwater Collection Date 12/09/08 Lab ID C08120444-006 DateReceived 12/11/08 Client Sample ID Trip Blank Matrix Aqueous MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 12/15/08 1535 /jlr Benzene ND ug/L 1.0 SW8260B 12/15/08 1535/jlr Carbon tetrachloride ND ug/L 1.0 SW8260B 12/15/08 1535 /jlr Chloroform ND ug/L 1.0 SW8260B 12/15/08 1535 /jlr Chloromethane ND ug/L 1.0 SW8260B 12/15/08 1535/jlr Methyl ethyl ketone ND ug/L 20 SW8260B 12/15/08 1535 /jlr Methylene chloiide ND ug/L 1.0 5W8260B 12/15/08 1535 IjIr Naphthalene ND ug/L 1.0 8W8260B 12/15/08 1535 jlr Toluene ND ug/L 1.0 SW8260B 12/15/08 1535 jlr Xylenes Total ND ug/L 1.0 SW8260B 12/15/08 1535 /jlr Surr 2-Dichlorobenzene-d4 100 %REC 80-120 SW8260B 12/15/08 1535 /jlr Surr Dibromofluoromethane 120 %REC 70-130 SW8260B 12/15/08 1535 jlr Surr p-Bromofluorobenzene 90.0 %REC 80-120 SW8260B 12/15/08 1535/jlr Surr Toluene-d8 90.0 %REC 80-120 SW8260B 12/15/08 1535/jlr 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 EISERGY LASORA TOfIEc ENERGYLABORATORIES INC 2393 Sail Creek HIway 82601 PC Box 3258 Caspe WY82602 Toll Free 888.235.0515 307235.0515 Fax 307234.1639 casperllenergy/ab.com www.energylab.com ANALYTICAL SUMMARY REPORT January 05 2009 Denison Mines USA Corp 6425 Hwy 191 Blanding UT 84511 Workorder No C08120444 Quote ID C1640 POC Wells Monthly Groundwater Sampling Project Name December Groundwater Energy Laboratories Inc received the following samples for Denison Mines USA Corp on 12/11/2008 for analysis Sample ID Client Sample ID Collect Date Receive Date Matrix Test C081 20444-001 MW 14 12/09/08 1407 12/11/08 Aqueous Metals by ICP/ICPMS Dissolved C08120444-002 MW 26 12/09/08 1432 12/11/08 Aqueous Metals by ICP/ICPMS Dissolved SW8260B VOCs Standard List C081204.44-003 MW 32 12/09/08 1050 12/11/08 Aqueous Metals by ICP/ICPMS Dissolved Gross Alpha minus Rn222 and Uranium C08120444-004 MW 60 12/09/08 1452 12/11/08 Aqueous Metals by ICP/ICPMS Dissolved Gross Alpha minus Rn222 and Uranium SW8260B VOCs Standard List C08120444-005 MW 65 12/09/08 1050 12/11/08 Aqueous Metals by ICP/ICPMS Dissolved Gross Alpha minus Rn222 and Uranium C08120444-006 Trip Blank 12/09/080000 12/11/08 Aqueous SW8260B VOCs Standard Ust 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 CAfk4wc UJJIAt Summary Report Page of gjp ENERG YLABORA TORIES INC 2393 Sail Creek Hiq/iway 8260 P0 Sex 3258 Casper WV82602 ____________Tell Free 8882350515 307235 0515 Fax 307234.1639 caspeflllenergylab.cem wwwenergy/ab.com LASORA TORIES QAIQC Summary Report Client Denison Mines USA Corp Report Date 01/05/09 Project December Groundwater Work Order C08120444 L4kI Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method E200.7 Batch Ri 12875 Sample ID Iron Manganese MB-081230A Method Blank ND mg/L ND mg/L 0.005 0.0003 Run ICP2-C_081230A 12/30/08 1243 Sample ID Iron Manganese LFB-081230A Laboratory Fortified Blank 1.02 mg/L 0.963 mg/I 0.030 0.010 102 96 Run ICP2-C_081230A 85 125 85 125 12/30/08 1247 Sample ID Iron Manganese C081 20451 -OOICMS2 Sample Matrix Spike 2.10 mgIL 2.05 mg/L 0.030 0.010 105 102 Run ICP2-C_081230A 70 130 70 130 12/30/08 1726 Sample ID Iron Manganese C08120451-OOICMSD2 Sample Matrix Spike Duplicate 2.06 mg/I 2.01 mg/L 0.030 0.010 103 100 Run ICP2-C_061230A 70 130 70 130 1.9 1.9 12/30/08 1730 20 20 Method E200.8 Batch Ri 12308 Sample ID Cadmium Manganese Nickel Uranium LRB Method Blank ND mg/I ND mg/L ND mgiL ND mgIL E-05 SE-OS 0.0007 iE-O5 Run ICPMS2-C_0812i5A 12/i 5/08 1400 Sample ID Cadmium Manganese Nickel Uranium LFB Laboratory Fortified Blank 0.0530 mg/L 0.0538 mg/I 0.0545 mg/L 0.0526 mg/L 0.0010 0.0010 0.0010 0.00030 106 108 109 105 Run ICPMS2-C_081215A 85 115 85 115 85 115 85 115 12/15/08 1407 Sample ID Cadmium Manganese Nickel Uranium C08120297-OOIBMS4 Sample Matrix Spike 0.0501 mg/L 0.513 mg/L 0.0566 mg/I 0.0573 mg/I 0.010 0.010 0.050 0.00030 100 104 112 Run ICPMS2-Q_081215A 70 130 70 130 70 130 70 130 12/15/08 2304 Sample ID Cadmium Manganese Nickel Uranium C08120297401BMSD4 Sample Matrix Spike Duplicate 0.0505 mg/L 0.479 mg/L 0.0573 mg/I 0.0587 mg/L 0.010 0.010 0.050 0.00030 100 105 115 Run ICPMS2-C_O8i215A 70 130 70 130 70 130 70 130 0.7 1.3 2.4 12/15/082310 20 20 20 20 Qualifiers RL Anaiyte 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 LASO/A TOP/ES Qualifiers RL Analyte reporting limit gnY ENERGYLA BORA TORIES INC 2393 Sail Creek Hqhway 82601 P0 Box 3258 Caspec WV82602 Toll Free 988.235.0515 307.235 0515 Fax 307.234.1639 casperenergy/ab.com www.energylab.com QAIQC Summary Report Client Denison Mines USA Corp Report Date 01/05/09 Project December Groundwater Work Order C081 20444 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Method E900.1 Batch GA-0196 Sample ID MB-GA-0196 Method Blank Run G5000W_081220A 12/22/08 1848 Gross Alpha minus Rn pCi/L Sample ID LCS-GA-0196 Laboratory Control Sample Run G5000W_081220A 12/22/08 1848 Gross Alpha minus Rn 28.4 pCi/L 103 70 130 Sample ID C08120444-OO3BDUP Sample Duplicate Run G5000W_081220A 12/22/08 1848 Gross Alpha minus Rn 5.09 pCi/L 12 39.9 Sample ID TAP WATER-MS Sample Matrix Spike Run G5000W_08I220A 12/22/08 2210 Gross Alpha minus Rn 27.3 pCi/L 101 70 130 Sample ID TAP WATER-MSD Sample Matrix Spike Duplicate Run G5000W_081220A 12/22/08 2210 Gross Alpha minus Rn 26.5 pCi/I 97 70 130 3.3 22.8 ND Not detected at the reporting limit ENERGYLASORA TORIES INC 2393 Sail Creek H4ihway 82601 P0 Box 3258 Caspec WV82602 ____________Toll Free 888.235.0515 3072350515 Far 307234.1639 caspeitenergy/ab.com wwwenergy/ab.com LABORA TORIES QAIQC Summary Report Client Denison Mines USA Corp Report Date 01/05/09 Project December Groundwater Work Order C08120444 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLImIt Qur Method SW26OB Batch R112306 Sample ID 121508_LCS_3 Laboratory Control Sample Run SATURNCA_081215A 12115/08 1217 Acetone 130 ugIL 20 128 70 130 Benzene 12 ug/L 1.0 123 70 130 Carbon tetrachloride 9.6 ug/L 1.0 96 70 130 Chloroform 12 ug/L 1.0 117 70 130 Chloromethane 9.2 ug/L 1.0 92 70 130 Methyl ethyl ketone 120 ug/L 20 123 70 130 Methylene chloride 11 ugh 1.0 110 70 130 Naphthalene 11 ug/L 1.0 113 70 130 Toluene 11 ug/L 1.0 110 70 130 Xylenes Total 28 ug/L 1.0 94 70 130 Surr 2-Dichlorobenzene-d4 1.0 104 80 120 Surr Dibromofluoromethane 1.0 105 70 130 Sum p-Bromofluorobenzene 1.0 100 80 130 Surr Toluene-d8 1.0 100 80 120 Sample ID 121508_MBLK_7 Method Blank Run SATuRNCA_081215A 12115/08 1450 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 Methyl ethyl ketone ND ug/L 20 Methylene chloride ND ugh 1.0 Naphthalene ND ugh 1.0 Toluene ND ug/L 1.0 Xylenes Total ND ug/L 1.0 Surr 12-Dichlorobenzene-d4 1.0 93 80 120 Sum Dibromofluoroniethane 1.0 124 70 130 Surr p-Bromofluorobenzene 1.0 91 80 120 Surr Toluene-d8 1.0 94 80 120 Sample ID C08120444-OO2BMS Sample Matrix Spike Run SATURNCA_081215A 12115/08 1806 Acetone 25000 ug/L 4000 125 70 130 Benzene 2400 ug/L 200 121 70 130 Carbon tetrachloride 2100 ug/L 200 106 70 130 Chloroform 3700 ug/L 200 126 70 130 Chloromethane 2000 ug/L 200 101 70 130 Methyl ethyl ketone 23000 ug/L 4000 114 70 130 Methylene chloride 2400 ug/L 200 118 70 130 Naphthalene 2200 ug/L 200 111 70 130 Toluene 2300 ug/L 200 113 70 130 Xylenes Total 5900 ug/L 200 99 70 130 Surr 2-Dichlorobenzene-d4 200 106 80 120 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit EtERGY LARORA TORIES ENERO YLABORA TORIES INC p2393 Sail Creek HI/1way 82601 P0 Box 3258 Caspe1c WY82602 re//Free 888235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com wwwenergy/ab.com QAIQC Summary Report Report Date 01/05/09 Work Order C081 20444 Client Denison Mines USA Corp Project December Groundwater Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qu Method SW82BOB Batch Ri 12306 Sample ID C08120444-OO2BMS Sample Matrix Spike Run SATURNCA_081 21 5A 12115/08 1806 Sum Dibromofluoromethane 200 108 70 130 Sum p-Bromofluorobenzene 200 108 80 120 Surr Toluene-d8 200 104 80 120 Sample ID C08120444-OO2BMSD Sample Matrix Spike Duplicate Run SATURNCA_081 21 SA 12/15/08 1844 Acetone 21000 ug/L 4000 105 70 130 Benzene 2400 ugh 200 122 70 130 0.7 20 Carbon tetrachloiide 2000 ug/L 200 98 70 130 7.8 20 Chloroform 3400 ug/L 200 114 70 130 6.6 20 Chloromethane 1800 ug/L 200 92 70 130 10 20 Methyl ethyl ketone 20000 ughL 4000 99 70 130 14 20 Methylene chloride 2100 ug/L 200 103 70 130 13 20 Naphthalene 2300 ug/L 200 114 70 130 2.8 20 Toluene 2200 ughL 200 112 70 130 1.1 20 Xylenes Total 6000 ugIL 200 100 70 130 1.1 20 Surr 2-Dichlorobenzene-d4 200 93 80 120 10 Sum Dibromofiuoromethane 200 95 70 130 10 Surr p-Bromofluorobenzene 200 101 80 120 10 Sum Toluene-d8 200 107 80 120 10 Qualifiers RL Analyte reporting limit 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 -I Co m p a n y Na m e K t_ _ _ . _ w Pr o ct Na m e PW S Pe r m i t Et c Sa m p l e Or i g i n tc e e eo a d St a t e EP A / S t a t e Co m p l i a n c e T Ye s fl No D Re p o r t Ma i l Ad d r e s s 13 r x V7 ln v c e Ad d r e s s d1 7 tS 1 34 n Co n t a c t Na m e Ph o n e / F a x Em a i l V3 s Me - F 2z rp d 4n p i c e Co n t a c t Ph o n e Pu r c h a s e Or d e r Dc o i t a - Z Ya z z Sa m p l e r Pl e a s e Pr i n t JE / 4 A a/ m d Qu o t b l B o t t l e Or d e r 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 OW El A2 L A GS A El ED D / E D T E l e c t r o n i c Da t a PO T W I W W T P Fo r m a t OS t a t e LJ L E V E L I V Ot h e r El NE L A C Ifi af l - C 5 O fl -i Co n t a c t EL 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 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 by VP _ S MS fl -D co o l e r ID e 1X Cl Lu - t Co m m e n t s It f 4. . A P S C jJ b A 0j f c H c i g Re c e l p t T e m p zZ On I No cu s t o d y s e a l j N Bo t t l e s Br co o i e r s In t a c t SIg n a t u r e Ma t c h 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 tf l i t i24 3i W J 3 2 4n 1 t J ho Co l l e c t i o n Da t e J2 o i2 t 1 t O 1 2- t O Y /2 t g r f2 q - a Co l l e c t i o n Ti m e /D 7 Il - I n OO IS A Og O MA T R I X -U i- 1 U -t 10 12 - 3j ŒE F v a 6 S p n Da T h Sig n a t u r e Cu s t o d y Re l i n q u i s h e d by i n t Da t e / T i m e O4 i S t Ig n Re c o r d Re t q u i e d by pr i n t Da t e / t i m e 5lg n a t u r Re c e i v e d b y pn n l Da t e / T i m e Sig n a t u r e Re c e i v e d by La b o r a t o Da t e r n m e Sig n a t u r e MU S T be 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 -f / t9 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 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 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 EN E R G Y AC II / IC /I I Pa g e __ _ _ _ of Energy Laboratories Inc Workorder Receipt Checklist Denison Mines USA Corp Login completed by Corinne Wagner 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 None C08120444 Date and Time Received 12111/2008 930 AM Received by kw Carrier name Next Day Air Not Present Not Present Not Present Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 2.2C Yes Yes NOD No NOD No NOD NOD No NOD No No NOD No No VOA vials submitted Not Applicable EPERGY LABORA TORIES ENERO YLABORA TORIES INC -2393 Sail Creek Hihway 82601 P0 Box 3258-Caspec WY82602 Toll Free 888.235.0515 307.235.0515 Fax 307234.1639 casperenergy/ab.corn www energy/aLt corn CLIENT Denison Mines USA Corn Date 05-Jan-09 Preject December Groundwater CASE NARRATIVE Sample Delivery Group C08120444 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 retuming 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 CERTFICATIONS USEPA WY00002 FL-DOH NELAC E87641 California 0211 8CA 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.energyIab.com THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT LABORA TORIES ENERG VLASORA TORIES INC 2393 Sail CreekHiqb way 82601 P0 Box 3258 Caspei WY82602 Toll Free 588.235.0515 307235.0515 Fax 307234.1539 casper5energy/ab.con www.energylab.com ANALYTICAL SUMMARY REPORT November 11 2008 Denison Mines USA Corp 6425 Hwy 191 Blanding UT 84511 Workorder No C081 10031 Quote ID C1640 POC Wells Monthly Groundwater Sampling Project Name October Monthly Groundwater Resample of Organic Energy Laboratories Inc received the following sample for Denison Mines USA Corp on 11/1/2008 for analysis._____ Sample ID Client Sample ID Cellect Date Receive Date Matrix Test C081 10031-001 MW 26 10/30/08 1340 11/01/08 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 Report Appreved By Summary Report Page of ENERG VLASORA TORIES INC 2393 Sail Creek H%/iway 82601 R0 Box 3258 Caspe kVY82602 ____________To//Free 888.235.0515 307235.0515 Fa 307234.1539 casper5energy/ab.corn www energy/at corn LASORA TORIES QAIQC Summary Report Client Denison Mines USA Corp Report Date 11/11/08 Project October Monthly Groundwater Resample of Organic Work Order C081 10031 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLImIt Qual Method SW82608 Batch RI 10498 Sample ID 110508_LCS_3 Laboratory Control Sample Run SATURNCA_081105C 11/05/08 1150 Benzene 11 ug/L 1.0 109 70 130 Carbon tetrachloride 11 ug/L 1.0 110 70 130 Chloroform II ugIL 1.0 109 70 130 Chloromethane 8.7 ug/L 1.0 87 70 130 mp-Xylenes 21 ug/L 1.0 107 70 130 Methyl ethyl ketone 120 ug/L 20 115 70 130 Methylenechloricle 11 ug/L 1.0 106 70 130 Naphthalene 11 ug/L 1.0 113 70 130 o-Xylene 10 ug/L 1.0 102 70 130 Toluene 10 ug/L 1.0 101 70 130 Xylenes Total 32 ug/L 1.0 105 70 130 Surr 12-Dichlorobenzene-d4 1.0 102 80 120 Surr Dibromofluoromethane 1.0 114 70 130 Surr p-Bromofluorobenzene 1.0 102 80 130 Surr Toluene-d8 1.0 96 80 120 Sample ID 110508_MBLK_24 Method Blank Run SATURNCA_081105C 11/06/08 0205 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 Sum .2-Dichlorobenzene-d4 1.0 111 80 120 Sum Dibromofluoromethane 1.0 117 70 130 Sum p-Bromofluorobenzene 1.0 98 80 120 Surr Toluene-d8 1.0 92 80 120 Sample ID C08110031-OOIAMS Sample Matrix Spike Run SATURNCA_081105C 11/06/08 1056 Benzene 1900 ug/L 200 95 70 130 Carbon tetrachloride 2100 ug/L 200 104 70 130 Chloroform 2600 ug/L 200 101 70 130 mp-Xylenes 3600 ug/L 200 89 70 130 o-Xylene 1800 ug/L 200 91 70 130 Toluene 1800 ug/L 200 88 70 130 Xylenes Total 5400 ug/L 200 67 70 130 Surr 2-Dichlorobenzene-d4 200 100 80 120 Surr Dibromofluoromethane 200 115 70 130 Qualifiers RL Analyte reporling 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 Casper WY82602 Toil Free 888.2350515 307235.0515 Fax 307234.1639 caspenPenergylab.com wwwenergy/ab.com LARORA TORIES QAIQC Summary Report Client Denison Mines USA Corp Report Date 11/11/08 Project October Monthly Groundwater Resample of Organic Work Order C081 10031 LMa1 Result Units RL %REC Low Limit High Limit RPO RPDLimit Qual1 Method SWS26OB Batch R110498 Sample ID C08110031.OOIAMS Sample Matrix Spike Run SATURNCA_081105C 11/06/08 1056 Surr p-Bromofluorobenzene 200 101 80 120 Sum Toluene-d8 200 94 80 120 Sample ID C081 10031-OOIAMSD Sample Matrix Spike Duplicate Run SATURNCA_081 05C 11/06/08 1134 Benzene 2100 ug/L 200 105 70 130 9.6 20 Carbon tetrachloride 2400 ug/L 200 119 70 130 13 20 Chloroform 2900 ug/L 200 113 70 130 20 mp-Xylenes 4000 ug/L 200 100 70 130 12 20 o-Xylene 2000 ug/L 200 100 70 130 9.2 20 Toluene 2000 ug/L 200 98 70 130 10 20 Xylenes Total 6000 ug/L 200 75 70 130 11 20 Surr 12-Dichlorobenzene-d4 200 106 80 120 10 Surr Dibromofluoromethane 200 123 70 130 10 Surr p-Bromofluorobenzene 200 107 80 120 10 Surr Toluene-d8 200 97 80 120 10 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit Co m p a n y Na m e fl r s n y1 Re p o r t Ma i l Ad d r e s s p1 aM c t9 s1 f hiv o i c e Ad d r e s s fr m f Re p o r t R e q u i r e d Fo r PO T W / W W T P LI DW Ot h e r Sp e c i a l Re p o r t Fo 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 NE L A C U A2 L A U Le v e l IV U Ot h e r _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ED D / E D T Fo r m a t _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Pr o j e c t Na m e PW S Pe r m i t Et c /9 f e X 4 hs 4 ts % Co n t a c t Na m e Ph o n e Fa x E- m a j / Sa m p l e r Na m e if ot h e A t t i a n Co n t a c t P4 4 1 e rc A i r s i s t w t v t c s Ec v _ J2 /c A m 22 z In v o i c e Cd n t a c t Ph o n e Pu r c h a s e O r d e r .1 L Mn z .2 41 L\ SI rE D No t i f y EL I pr i o r t o RU S H Sh l b sa m p l e su b m i t t a l fo r ad d i t i o n a l 0m w Ch a r g e s an d sc h e d u l i n g Cq t ID s Co m m e n t s o. 5 . // s e 6d / 1 sQ C Re c e i p t T e m p 0/ i Si us t o d y se a i .0 w In t a c t 0. 5 im f r t $ 4n . Si g n a t u r e zr n i us Ma t c h OD MA T R I X La b ID -f r II I I I I I I 1 I S1 c 3 1 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 1_ j p i z C Co l l e c t i o n Da t e 3f r a g Co l l e c t i o n Tim e jq 2w u 2 4 3o o X g 3- k S LE -- 10 ST Re l i n q u i s h e d b y tP n l U Da/ me 5i g n Re c e i v e s by p n n t Da t e / T i m e sig i a t u r e Cu s t o d y f4 p Mt 4 1 g 1f s 4 L L oi r n m e Re c o r d Re I i n t s h e d by tP r l n h Da t e i T i m e Sig n a t u r e MU S T be Si g n e d LA B O R A T O R Y U S E O N L Y Sa m p l e Di s p o s a l Re t u m to c l i e n t La b Di s p o s a l Sa m p l e Ty p e of f r a c t i o n s 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 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 Vi s 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 li n k s EI S E R G Y LA S O R A TO 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 Re f e r to co r r e s p o n d i n g no t e s on re v e r s e si d e Energy Laboratories Inc VVorko rder Receipt Checklist Denison Mines USA Corp C08110031 Login completed by Corinne Wagner Date and Time Received 11/112008920 AM Reviewed by Received by ke Reviewed Date Carrier name Next Day Air Shippingcontainer/cooleringoodcondition Yes No NotPresent 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 Sufficientsamplevolumeforindicatedtest Yes No All samples received within holding time Yes No Container/Temp Blanktemperature 3.7C On Ice Water VOA vials have zero headspace Yes No No VOA vials submitted Water-p1-I acceptable upon receipt Yes No NotApplicable Contact and Corrective Action Comments None ENERGYLASORA TORIES INC 2393 Sail Creek Hqbway 82601 RU Box 3258 Casper WY82602 Toll Free 888235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com wwwenergy/ab.com LASORA TORIES CLIENT Denison Mines USA Corn Date 12-Nov-08 Project October Monthly Groundwater Resample of Org CASE NARRATIVE Sample Delivery Group COBi 10031 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 rnethod 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 tirne is 48 hours days The tirne 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 Sirnazine 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 CERTFICATIONS USEPA WY00002 FL-DOH NELAC E87641 California 0211 8CA 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 veriI 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 EIERGY AIIORA TORIES Client Project Lab ID Client Sample ID ENERO YLABORA TORIES INC SOS Sail Creek Hlqbway 82601 AC Sax 3258 Caspei WV82602 rail Free 988235.0515 307235.0515 Fa 307234.1639 cdspenlenergylab.cam www.energylab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 12/06/08 4th Quarter Groundwater Collection Date 11/04/08 1411 C081 10216-003 DateRecelved 11106/08 MW Matrix Aqueous MCI Analyses Result Units Qualifiers RI QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/I A2320 11/11/08 0009/ljl Bicarbonate as HCO3 297 mg/I A2320 11/11/08 0009 Ijl Calcium 169 mg/I 0.50 E200.7 11/26/08 1755 cp Chloride 12 mg/L A4500-Cl 11/17/08 1456 jal Fluoride 0-3 mg/I 0.1 A4500-F 11/10/08 1142/IjI Magnesium 60.7 mg/I 0.50 E200.7 11/26/08 1755 cp Nitrogen Ammonia as ND mglL 0.1 E350.1 11/13/08 1045/eU-b Nitrogen NitrateNitrite as 0.18 mg/I 0.05 E353.2 11/12/08 1119 eli-b Potassium 6.89 mg/L 0.50 E200.7 11/26/08 1755 cp Sodium 176 mg/I 1.5 E200.7 11/26/08 1755 cp Sulfate 719 mg/I 30 A4500-S04 11/18/08 1115 Ijal PHYSICAL PROPERTIES pH 7.49 s.u 0.01 A4500-H 11/07/080958 dd Solids Total Dissolved TDS 180 1300 mg/L 10 A2540 11/07/08 0938 /jah METALS DISSOLVED Arsenic ND ugIL 5.0 E200.8 11/15/08 1017/sml Beryllium ND ug/I 0.50 E2OD.8 11/1808 2207 ts Cadmium ND ug/I 0.50 E200.8 11/15/08 1017/smi Chromium ND ug/L 25 E200.8 11/18/08 2207 ts Cobalt ND ug/I 10 E200.8 11/15/08 1017/sml Copper ND ug/I 10 E200.8 11/15/08 1017/sml Iron 85 ug/I 30 E200.7 11/26/08 1755/cp lead ND ug/I 1.0 E200.8 11/15/08 1017/sml Manganese 68 ug/I 10 E200.8 11/15/08 1017 sml Mercury ND ug/I 0.50 E200.8 11/15/08 1017/sml Molybdenum ND ug/I 10 E200.8 11/15/08 1017 sml Nickel ND ug/I 20 E200.8 11/15/08 1017/smi Selenium ND ug/L 5.0 E200.8 11/15/08 1017/sml Silver ND ug/I 10 E200.8 11/15/08 1017/sml Thallium ND ugJI 0.50 E200.8 11/15/08 1017/sml Tin ND ugJL 100 E200.8 11/15/08 1017/smi Uranium 0.49 ug/L 0.30 E200.8 11/15/08 1017 sml Vanadium ND ug/I 15 E200.8 11/18/082207 ts Zinc ND ug/I 10 E200.8 11/15/08 1017/smi RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.4 pCi/L E900.1 11/21/08 1429 cgr Gross Alpha minus Rn Precision 0.7 pCi/I E900.1 11/21/08 1429 cgr Gross Alpha minus Rn MDC 1.0 pCi/I E900.1 11/21/08 1429/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 Not detected at minimum detectable concentration ENERO YLABORA TORIES INC 2393 Sail Creek Hjqhway 8260 -RO Box 3258 Caspei WY82602J7TollFree 888.235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com www.energylab.com LAI3ORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/06/08 Project 4th Quarter Groundwater Collection Date 11/04/08 1411 Lab ID C081 10216-003 DateReceived 11/08/08 Client Sample ID MW Matrix Aqueous MCLI Analyses Result Units Qualifiers RI QCL Method Analysis Date By DATA QUALITY NC Balance 2.52 Calculation 12/01/08 1550/ sdw Anions 20.2 meqL Calculation 12/01/08 1550 sdw Cations 21.3 meq/L Calculation 12/01/08 1550 sdw Solids Total Dissolved Calculated 1300 mg/I Calculation 12/01/08 1550 sdw TDS Balance 0.80-1.20 1.00 Calculation 12/01/08 1550 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND uglL 20 SW8260B 11/11/08 1706 jlr Benzene ND ug/L 1.0 SW8260B 11/11/08 1706/jlr Carbon tetrachloride ND ug/L 1.0 SW8260B 11/11/08 1706 Ijlr Chloroform ND ug/I 1.0 SW8260B 11/11/08 1705/jIr Chloromethane ND ug/L 1.0 SW82608 11/11/08 1706 Ijlr Methyl ethyl ketone ND ug/L 20 SW8260B 11/11/08 1706 /jlr Methylene chloride ND ug/L 1.0 8W8260B 11/11/08 1706 jlr Naphthaiene ND ug/L 1.0 SW8260B 11/11/08 1706/jir Toluene ND ug/L 1.0 5W8260B 11/11/08 1706/jlr Xylenes Total ND ug/L 1.0 SW8260B 11/11/08 1706 jir Sum 2-Dichlorobenzene-d4 99.0 %REC 80-1 20 5W8260B 11/11/08 1706 jlr Sum Dibromofluoromethane 119 %REC 70-130 SW8260B 11/11/08 1706 jir Sum p-Bromofluorobenzene 94.0 %REC 80-120 5W8260B 11/11/08 1706 /jlr Sum Toluene-d8 95.0 %REC 80-120 SW8260B 11/11/08 1706 jir 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 EtERGY LASORA TORIES Client Project Lab ID Client Sample ID ENERGVLJ480RA TORIES INC 2393 Sail Creek Hbway 82601 .Rc Box 3258 Casper WV82602 Toll Frea 888.235.0515 307235.0515 Fax 307234.1639 caspert.Qenergy/ab.com wwwenergy/ab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 12/31/08 4th Quarter Groundwater Collection Date 11/12/08 0918 C081 10568-001 DateReceived 11/14/08 MW Matrix Aqueous MCL/ Analyses Result Units Qualifier RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 11/20/082243 Iji Bicarbonate as HCO3 362 mg/L A2320 11/20/08 2243 Iji Calcium 346 mg/L 0.5 E200.7 12129/08 1954 cp Chloride mg/L A4500-Cl 11/21/08 1320 jal Fluoride 0.3 mg/L 0.1 A4500-F 11/20/08 1346 Iji Magnesium 96.4 mgIL 0.5 E200.7 12/29/08 1954 cp Nitrogen Ammonia as ND mg/L 0.05 E350.1 11/19/08 1204 eli-b Nitrogen NitrateNitrite as ND mg/L 0.05 E353.2 11/20/08 1312 eli-b Potassium 10.6 mg/L 0.5 E200.7 12/29/08 1954 cp Sodium 550 mg/L E200.7 12129108 1954 cp Sulfate 2020 mg/L 30 A4500-804 11/24/08 1256/jal PHYSICAL PROPERTIES pH 7.38 s.u 0.01 A4500-HB 11/17/081400/dd Solids Total Dissolved TDS 180 3140 mg/L 10 A2540 11/17/08 1358 jah METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 j/20108 0629 sml Beryllium ND ug/L 0.50 E200.8 11/20/080629 smi Cadmium ND uglL 0.50 E200.8 11/20/080629 sml Chromium ND ug/L 25 E200.8 11/20/08 0629 sml Cobalt ND ug/L 10 E200.8 11/20/08 0629/sml Copper ND ug/L 10 E200.8 11/20/08 0629 smi Iron ND ug/L 30 E200.8 11/20/08 1506 sml Lead ND ug/L 1.0 E200.8 11/20/08 0629 sml Manganese ND ug/L 10 E200.8 11/20/080629 sml Mercury ND ug/L 0.50 E200.8 11/20/08 0629 sml Molybdenum ND ug/L 10 E200.8 11/20/08 0629 sml Nickel ND ug/L 20 E200.8 11/20/080629 sml Selenium 9.5 ug/L 5.0 E200.8 11/20/08 0629 sml Silver ND ug/L 10 E200.8 11/20/08 1506/sml Thallium ND ug/L 0.50 E200.8 11/20/08 0629 sml Tin ND ugL 100 E200.8 11/20/08 0629 sml Uranium 8.32 ug/L 0.30 E200.8 11/20/08 0629 sml Vanadium ND ug/L 15 E200.8 11/20/08 0629 sml Zinc ND ug/L 10 E200.8 11/20/08 0629/sml RADIONUCUDES DISSOLVED Gross Alpha minus Rn 0.9 pCi/L E900.1 12102/08 1507 cgr Gross Alpha minus Rn Precision 0.4 pCI/I E900.1 12/02/08 1507 cgr Gross Alpha minus Rn MDC 0.4 pCi/L E900.1 12/02/08 1507 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 ENERGY LA/lOt/A Tote/ES ENERGYLABORA TORIES ftC p2393 Sail creek H/qbwajq82601J .Rc Sex 3258 caspe WY82502mlFree885235.0515 307235.0515 Fa.i-307.234.1539 casperGenergy/ab.ccm www.energylab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 12/31/08 4th Quarter Groundwater Collection Date 11/12/08 0918 C081 10568-001 DateReceived 11/14/08 Matrix Aqueous Client Project Lab ID Client Sample ID MW MCLJ Analyses Result Units Qualifier RL QCL Method Analysis Date By DATA QUALITY NC Balance 1.21 Calculation 12/31108 1258/ sdw Anions 48.2 meq/L Calculation 12/31/08 1258 sdw Cations 49.4 meq/L Calculation 12/31/08 1258 sdw Solids Total Dissolved Calculated 3220 mg/L Calculation 12/31/08 1258 sdw TDS Balance 0.80-1.20 0.980 Calculation 12/31/08 1258 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 40 SW8260B 11/18/080343 jIr Benzene ND ug/L 2.0 SW82GOB 11/18/08 0343 /jlr Carbon tetrathloride ND ug/L 2.0 SW8280B 11/18/08 0343 jlr Chloroform ND ug/L 2.0 SW8260B 11/18/080343 jir Chioromethane ND ug/L 2.0 SW8260B 11/18/080343 /jlr Methyl ethyl ketone ND ugIL 40 SW8260B 11/18/08 0343 /jlr Methylene chloride ND ug/L 2.0 SW8260B 11/18/08 0343 /jlr Naphthalene ND ug/L 2.0 SW8260B 11/18/08 0343 jir Toluene ND ugh 2.0 SW8260B 11/18/08 0343 jlr Xylenes Total ND ug/L 2.0 5W8260B 11/18/080343 /jlr Sun 2-Dichlorobenzene-d4 98.0 %REC 80-1 20 SW82608 11/18/080343 /jlr Sum Dibromotluoromethane 117 %REC 70-1 30 SW8260B 11/18/08 0343 /jlr Sum p-Bromofluorobenzene 89.0 %REC 80-120 5W8260B 11/18/08 0343 /jlr Sum Toluene-d8 95.0 %REC 80-1 20 SW8260B 11/18/08 0343 /jlr 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 YLASORA TORIES INC 2393 Salt Creek Hiqbway 8260 RC Box3258 Gaspei WV82602J7TollFree888.2350515 307235 0515 Fax 307.234.1639 casperenerqylab.com wwwenergylab.com LARORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corn Report Date 12/08/08 Project 4th Quarter Groundwater Collection Date 11/03/08 0858 Lab ID C081 10216-001 DateReceived 11/06/08 Client Sample ID MW Matrix Aqueous MCI Analyses Result UnIts Qualifiers RI QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/I A2320 11/10/08 2348 IjI Bicarbonate as HCO3 311 mg/I A2320 11110108 2348 IjI Calcium 484 mg/L 1.0 E200.7 11/26/08 1650/cp Chloride 59 mg/L A4500-Cl 11/17/08 1453 jal Fluoride 0.6 mg/I 0.1 A4500-F 11/10/08 1133 IjI Magnesium 249 mg/I 0.50 E200.7 11/26/08 1650/cp Nitrogen Ammonia as ND mg/I 0.1 E350.1 11/13108 1043 eli-b Nitrogen NitrateNitrite as 0.23 mg/I 0.05 E353.2 11/12/08 0945 eli-b Potassium 23.0 mg/I 0.50 E200.7 11/26/08 1650 cp Sodium 836 mg/L 7.6 E200.7 11/26/08 1650 cp Sulfate 3340 mg/L 30 A4500-S04 11/18/081111 Ijal PHYSICAL PROPERTIES p11 6.97 s.u 0.01 A4500-H 11/07/08 0951 dd Solids Total Dissolved TDS 180 5220 mg/L 10 A2540 11/07/08 0937 /jah METALS DISSOLVED Arsenic ND ug/I 5.0 E200.8 11/15/08 0936/sml Beryllium ND ug/I 0.50 E200.8 11/18/08 2153/ts Cadmium 0.55 ug/l 0.50 E200.8 11/15/08 0936 smi Chromium ND ug/I 25 E200.8 11/18/08 2153 ts Cobalt ND ug/I 10 E200.8 11/15/08 0936/sml Copper ND ug/L 10 E200.8 11/15/080936 sml Iron ND ug/I 46 E200.7 11/26/08 1650/cp Lead ND ug/L 1.0 E200.8 11/15/080936 sml Manganese 813 ug/L 10 E200.8 11/15/08 0936 sml Mercury ND ug/L 0.50 E200.8 11/15/08 0936/sml Molybdenum ND ug/L 10 E200.8 11/15/08 0936/sml Nickel ND ug/I 20 E200.8 11/15/080936 smi Selenium 26.5 ugJI 5.0 E200.8 11/15/080936 sml Silver ND uglI 10 E200.8 11/15/08 0936 sml Thallium 0.93 ug/I 0.50 E200.8 11/15/08 0936 sml Tin ND ug/I 100 E200.8 11/15/08 0936/sml Uranium 23.8 ug/I 0.30 E200.8 11/15/080936 sml Vanadium ND ug/I 15 E200.8 11/18/082153/ts Zinc 37 ug/I 10 E200.8 11/15/08 0936 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn -0.1 pCi/I E900.1 11/21/08 1429 cgr Gross Alpha minus Rn Precision 0.6 pCi/I E900.1 11/21/08 1429 cgr Gross Alpha minus Rn MDC 1.0 pCi/I E900.1 11/21/08 1429 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 Not detected at minimum detectable concentration ENERO YLABORA TORIES iNC -2393 Sail Creek Hiqbway 82801 AU Sax 3258 Caspec WV82602IVTailFree888235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.cam vwwenergy/th.cam LABORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corn Report Date 12/06/08 ProJect 4th Quarter Groundwater Collection Date 11/03/08 0858 Lab ID C081 10216-001 DateReceived 11/06/08 Client Sample ID MW Matrix Aqueous MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By DATA QUALITY NC Balance 3.27 Calculation 12/01/08 1550/ sdw Anions 76.4 meq/L Calculation 12/01/08 1550 sdw Cations 81.6 meq/L Calculation 12/01/08 1550 sdw Solids Total Dissolved Calculated 5150 mg/L Calculation 12/01/08 1550 sdw TDS Balance 0.80-1.20 1.01 Calculation 12/01108 1550sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 11/11/08 1550/JIr Benzene ND ug/L 1.0 5W8260B 11/11/08 1550/jir Carbon tetrachioride ND ug/L 1.0 SW8260B 11/11/08 1550 /jlr Chloroform ND ug/L 1.0 SW8260B 11/11/08 1550/jlr Chloromethane ND ugIL 1.0 SW8260B 11/11/08 1550 jlr Methyl ethyl ketone ND ug/L 20 SW8260B 11/11/08 1550 /jlr Methylene chloride ND ugh 1.0 SW82608 11/11/08 1550 jlr Naphthalene ND ug/L 1.0 5W8260B 11/11/08 1550/jIr Toluene ND ugh 1O SW8260B 11/1 1108 1550/jir Xylenes Total ND ug/L 1.0 SW8260B 11/11/08 1550 lr Surr 12-Dichlorobenzene-d4 102 %REC 80-120 5W8260B 11/11/08 1550 jlr Surr Dibromofluoromethane 120 %REC 70-130 5W8260B 11/11/08 1550 jlr Surr p-Bromofluorobenzene 104 %REC 80-120 SW8260B 11/11/08 1550 /jlr Surr Toiuene-d8 92.0 %REC 80-120 5W8280B 11/11/08 1550/jir 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 EtERGY LASORA TORIES Client Project Lab ID Client Sample ID ENERGYLABORA TORIES INC 2393 Saft CreekHbway 82601 RC Sex 3258 Caspei WY82602 Tell Free 888.235.0515 307235.0515 Fax 3072341639 casperi@energylab.com www.energylab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 12/06/08 4th Quarter Groundwater Collection Date 11/03/08 0945 C081 10216-002 DateReceived 11/06/08 MW 3A Matrix Aqueous MCLI Analyses Result Units Qualifiers RI QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/I A2320 11111/08 0001 Iji Bicarbonate as HCO3 287 mg/I A2320 11/11/080001 Ijl Calcium 498 mg/L 1.0 E200.7 11/26/08 1746 cp Chloride 56 mg/I A4500-CI 11/17108 1454 /jal Fluoride 1.5 mg/I 0.1 A4500-FC 1110/08 1136/UI Magnesium 310 mg/I 0.50 E200.7 1126/08 1746 cp Nitrogen Ammonia as ND mg/L 0.1 E350.1 11/13/08 1044 eli-b Nitrogen NitrateNitrita as 1.33 mg/L 0.05 E353.2 11/12/08 0946 eli-b Potassium 28.6 mg/I 0.50 E200.7 11/26/08 1746/cp Sodium 811 mg/I 7.6 E200.7 11/26/08 1746/cp Sulfate 3570 mg/L 30 A4500-504 11/18/08 1113 jal PHYSICAL PROPERTIES pH 6.85 s.u 0.01 A4500-H 11/07/08 0954 dd Solids Total Dissolved TDS 180 5600 mg/I 10 A2540 11/07/080938 /jah METALS DISSOLVED Arsenic ND uglI 5.0 E200.8 11/15/08 0942 smi Beryllium 1.81 ug/L 0.50 E200.8 11/18/08 2200/ts Cadmium 1.56 ug/I 0.50 E200.8 11/15/080942 sml Chromium ND ug/L 25 E200.8 11/18/082200 ts Cobalt ND ug/L 10 E200.6 11/15/08 0942 sml Copper ND ug/I 10 E200.8 11/15/080942 sml Iron ND ug/I 46 E200.7 11/26/06 1746/cp lead ND ug/L 1.0 E200.8 11/15/080942 smi Manganese 189 ug/I 10 E200.8 11/15/08 0942 sml Mercury ND ug/L 0.50 E200.8 11/15/08 0942 sml Molybdenum ND ug/L 10 E200.8 11/15/080942 sml Nickel ND ug/L 20 E200.8 11/15/08 0942 sml Selenium 89.0 ug/L 5.0 E200.8 11/15/08 0942 smi Silver ND ugIL 10 E200.8 11/15/08 0942 sml Thallium 0.98 ug/L 0.50 E200.8 11/15/08 0942 smi Tin ND ug/I 100 E200.8 11/15/080942/smi Uranium 17.9 ug/L 0.30 E200.8 11/15/080942 smi Vanadium ND ug/I 15 E200.8 11/18/082200 ts Zinc 85 ug/I 10 E200.8 11/15/08 0942 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn -0.1 pCi/I E900.1 11/21/08 1429 cgr Gross Alpha minus Rn Ii Precision 0.6 pCi/L E900.1 11/21/08 1429 cgr Gross Alpha minus Rn MDC 1.0 pCi/I E900.1 11/21/08 1429 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 aample matrix interfarence Not detected at minimum detectable concentration ENERGY LABORA TORIES ENERGYLASORA TORIES INC 2393 Salt Creek Hbway 82601 P0 Sax 3258 Caspet WV82602 Tall Free 885 235.0515 307.235.0515 Fa 307234.1639 caspercenergylab.cam wwwenergylab.cam LABORATORY ANALYTICAL REPORT Dersison Mines USA Corp Report Date 12/06/08 4th Quarter Groundwater Collection Date 11103108 0945 C081 10216-002 DateRecelved 11/06/08 Matrix Aqueous Client Project Lab ID Client Sample ID MW 3A MCLJ Analyses Result UnIts Qualifiers RL QCL Method Analysis Date By DATA QUALITY NC Balance 3.31 Calculation 12/01/08 1550 sdw Anions 80.8 meq/L Calculation 12/01/08 1550 sdw Cations 86.4 meqL Calculation 12/01/08 1550 sdw Solids Total Dissolved Calculated 5420 mgL Calculation 12/01/08 1550 sdw TDS Balance 0.80-1.20 1.03 Calculation 12/01/08 1550 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 5W8260B 1/1 1/08 1628 jlr Benzene ND ug/L 1.0 SW8260B 1111/08 1628 jIr Carbon tetrachloride ND ugh 1.0 SW8260B 11/11/08 1628 jlr Chloroform ND ug/L 1.0 5W8260B 1111/08 1628/jIr Chloromethane ND ug/L 1.0 SW8260B 11/11/08 1628jlr Methyl ethyl ketone ND ugL 20 SW8260B 11/11/08 1628 jlr Methylene chloride ND ug/L 1.0 SW8260B 11/11/08 1628 jlr Naphthalene ND ug/L 1.0 SW8260B 11/11/08 1628/jlr Toluene ND ug/L 1.0 SW8260B 11/11/08 1628jlr Xylenes Total ND ug/L 1.0 SW8260B 11/11/08 1628 jlr Surr 2-Dichlorobenzene-d4 94.0 %REC 80-120 SW8260B 11/11/08 1628 jlr Surr Dibromofluoromethane 113 %REC 70-1 30 SW82608 11/11/08 1628 jlr Surr p-Bromoftuorobenzene 92.0 %REC 80-120 SW8260B 11/11/08 1628 /jlr Surr Toluene-d8 94.0 %REC 80-120 5W8260B 1111 1/08 1628/jIr 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 ENERGYLASORA TORIES INC -2393 Salt CreekH4/iway 82501 ea Box3258 Caspei WV82502 Toll Free 888.265.0515 3072350515 Fax 307234.1539 casper@energylab.com wwwenergylab.coniENERGY LABOR/I TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/13/08 0834 Lab ID C081 10568-002 DateReceived 11/14/08 Client Sample ID MW Matrix Aqueous MCLI Analyses Result Units Qualifier RI QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/I A2320 11/20/082305/tjl Bicarbonate as HCO3 339 mg/I A2320 11/20/08 2305 IJI Calcium 270 mg/I 0.5 200.7 12/29/08 2006 cp Chloride 41 mg/I A4500-Cl 11/21/08 1322/jal Fluoride 0.4 mg/I 0.1 A4500-F 11/20/08 1402 ljl Magnesium 119 mg/L 0.5 200.7 12/29/08 2006 cp Nitrogen Ammonia as ND mg/L 0.05 E350.1 11/19/08 1206 eli-b Nitrogen NitrateNitrite as 6.54 mg/L 0.05 E353.2 11120/08 1313 eli-b Potassium 7.1 mg/I 0.5 E200.7 12/29/08 2006 cp Sodium 87 mg/I E200.7 12/29/08 2006 cp Sulfate 880 mg/I 30 A4500-S04 11/24/08 1256 /jal PHYSICAL PROPERTIES pH 7.41 s.u 0.01 A4500-H 11/17/08 1405/dd Solids Total Dissolved TDS 180 1590 mg/I 10 A2540 11/17/08 1359 jah METALS DISSOLVED Arsenic ND ug/I 5.0 E200.8 11/20/08 0636 sml Beryllium ND ug/I 0.50 E200.8 11/20/08 0636 smi Cadmium ND ug/I 0.50 200.8 11/20/08 0636 sml Chromium ND ug/L 25 E200.8 11/20108 0636 sml Cobalt ND ug/I 10 E200.8 11/20/080636 sml Copper ND ug/I 10 200.8 11/20/080636 sml Iron ND ug/I 30 E200.8 11/20/08 1512 sml Lead ND ug/I 1.0 E200.8 11/20/080636 smi Manganese ND ug/I 10 E200.8 11/20/080636 sml Mercury ND ug/I 0.50 200.8 11/20/080636 sml Molybdenum ND ug/L 10 E200.8 11/20/080636 sml Nickel ND ug/I 20 E200.8 11/20/080636 sml Selenium 47.6 ug/I 5.0 200.8 11/20/08 0636 sml Silver ND ug/I 10 200.8 11/20/08 1512/sml Thallium ND ug/L 0.50 200.8 11/20/080636 sml Tin ND ug/I 100 200.8 11/20/08 0636/sml UranIum 7.61 ug/L 0.30 200.8 11/20/080636 sml Vanadium ND ug/L 15 E200.8 11/20/080636 sml Zinc ND ug/I 10 200.8 11/20/080636 smi RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.3 pCi/I 900.1 12/02/08 1507 cgr Gross Alpha minus Rn Precision 0.3 pCi/I E900.1 12/02/08 1507 cgr Gross Alpha minus Rn MDC 0.4 pCi/I 900.1 12/02/08 1507 cgr Report RI Analyte reporting limit MCI Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RI Increased due to sample matrix interference Not detected at minimum detectable concentration ENERGY LAI3ORA TORIES Client Project Lab ID Client Sample ID ENERGYLABORA TORIES INC 2393 Sail Creek Hbway 82601 P0 Sax 3258 Caspe4c WY82602 Toil Free 885235.0515 3072350515 Fax 307234.1639 caspertenergy/ab.com www.energylab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 12/31/08 4th Quarter Groundwater Collection Date 11/13/08 0834 C081 10568-002 DateRecelved 11/14/08 MW Matrix Aqueous MCU Analyses Result Units Qualifier RL QCL Method Analysis Date By DATA QUALITY NC Balance 3.31 Calculation 12/31108 1258 sdw Anions 25.5 meq/L Calculation 12/31/08 1258 sdw Cations 27.3 meq/L Calculation 12/31/08 1258 sdw Solids Total Dissolved Calculated 1610 mg/L Calculation 12/31/08 1258 sdw TDS Balance 0.80-1.20 0.990 Calculation 12/31/08 1258 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 40 SW8260B 11/18/08 0421 Ijlr Benzene ND ug/L 2.0 SW8260B 11/18/08 0421 jIr Carbon tetrachloride ND ug/L 2.0 SW8260B 11/18/08 0421 /jlr Chloroform 2100 ugIL 200 SW8260B 11/18/080034 jlr Chloromethane ND ug/L 2.0 SW8260B 11/18/08 0421 /jlr Methyl ethyl ketone ND ug/L 40 SW8260B 11/18/080421 jIr Methylene chloride ND ug/L 2.0 SW8260B 11/18/080421 /jlr Naphthalene ND ug/L 2.0 SW8260B 11/18/08 0421 jlr Toluene ND ug/L 2.0 SW8260B 11/18/08 0421 /jlr Xylenes Total ND ug/L 2.0 SW8260B 11/18/080421 /jlr Surr 2-Dichlorobenzene-d4 97.0 %REC 80-120 SW8260B 11/18/08 0421 /jlr Surr Dibromofluoromethane 117 %REC 70-130 SW8260B 11/18/08 0421 jlr Surr p-Bromofluorobenzene 88.0 %REC 80-120 SW8260B 11/18/08 0421 jlr Sum Toluene-d8 94.0 %REC 80-120 SW8260B 11/18/080421 jlr Repert RL Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration ENERGYLABORA TORIES INC 2393 Sail CreekHibway 82601 RO Box 3258 Caspe4c WY82602 Toil Free 888.235.0515 307235.0515 Far 307234.1839 caspeitenergy/ab.com www.energylab.comENERGY LAfiOfA rO//ES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/11/08 1232 Lab ID C081 10568-003 DateReceived 11/14/08 Client Sample ID MW Matrix Aqueous MCI Analyses Result Units Qualifier RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 11/20/082312 IJI Bicarbonate as HCO3 368 mg/I A2320 11/20/08 2312 IjI Calcium 143 mgL 0.5 E200.7 12/29/08 2015 cp Chloride 47 mg/I A4500-Cl 11/21/08 1330 jal Fluoride 1.0 mg/I 01 A4500-FC 11/20/081411 ljl Magnesium 39.2 mg/L 0.5 E200.7 12/29/08 2015 cp Nitrogen Ammonia as 0.36 mg/L 0.05 E350.1 11/19/08 12071 eli-b Nitrogen NitrateNitrite as 0.08 mg/I 0.05 E353.2 11/20/08 1314 eli-b Potassium 7.7 mg/I 0.5 E200.7 12/29/08 2015 cp Sodium 521 mg/L E200.7 12/29/08 2015 cp Sulfate 1170 mg/I 30 A4500-S04 11/24/08 1258 /jal PHYSICAL PROPERTIES pH 7.78 s.u 0.01 A4500-H 11/17/08 1409 dd Solids Total Dissolved TDS 180 1980 mg/L 10 A2540 11/17/08 1359 jah METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 11/20/080642 sml Beryllium ND ug/L 0.50 E200.8 11/20/08 0642 sml Cadmium ND uglI 0.50 E200.8 11/20/08 0642 smi Chromium ND ug/L 25 E200.8 11/20/08 0642 sml Cobalt ND ug/L 10 E200.8 11/20080642/sml Copper ND ug/L 10 E200.8 11/20/08 0642 smi Iron 64 ug/L 30 E200.8 11/20/08 1525/sml Lead ND ugI 1.0 E200.8 11/20/080642 sml Manganese 230 ug/I 10 E200.8 11/20/080642 sml Mercury ND ug/L 0.50 E200.8 11/20/080642 sml Molybdenum ND ug/L 10 E200.8 11/20/08 0642 sml Nickel ND ug/L 20 E200.8 11/20/080642 sml Selenium ND ug/L 5.0 E200.8 11/20/080642 sml Silver ND uglI 10 E200.8 11/20/08 1525/sml Thallium ND ug/L 0.50 E200.8 11/20/08 0642 smi Tin ND ugI 100 E200.8 11/20/08 0642 smi Uranium ND ug/I 0.30 E200.8 11/20/08 0642 sml Vanadium ND ug/I 15 E200.8 11/20/08 0642 sml Zinc ND ug/I 10 E200.8 11/20/080642 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.4 pCi/I E900.1 12/02/08 1507 cgr Gross Alpha minus Rn Precision 0.3 pCi/I E900.1 12/02/08 1507 cgr Gross Alpha minus Rn MDC 0.4 pCi/I E900.1 12/02/08 1507 cgr Report RI Analyte reporting limit MCL Maximum contaminant level DefinItions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RI increased due to sample matrix interference ENERGYLASORA TORIES INC p2393 Saft Creek Hiqhway 82601 P0 Sex 3258 Casper WY82602 To//Free 888.235.0515 307.235.0515 Fax 307234.1539 casperenergy/ab.com www.energylab.comENERGY LALIORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corn Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/11/08 1232 Lab ID C081 10568-003 DateRecelved 11/14/08 Client Sample ID MW Matrix Aqueous MCLJ Analyses Result UnIts Qualifier RI QCL Method Analysis Date By DATA QUALITY A/C Balance 2.12 Calculation 12/31/08 1259 sdw Anions 31.9 meq/L Calculation 12/3108 1259 sdw Cations 33.2 meq/L Calculation 12/31/08 1259 sdw Solids Total Dissolved Calculated 2130 mg/I Calculation 12/31/08 1259/sdw TDS Balance 0.80-1.20 0.930 Calculation 12/31/08 1259 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 8W8280B 11/17/08 1429 /jlr Benzene ND ugII 1.0 SW8260B 11/17/08 1429 jIr Carbon tetrachloride ND ug/I 1.0 SW8260B 11/1708 1429 jlr Chloroform ND ug/I 1.0 SW8260B 11/17/08 1429 jlr Chloromethane ND ugIL 1.0 SW8260B 11/17/08 1429 /jlr Methyl ethyl ketone ND ug/I 20 SW8260B 11/17/08 1429 jIr Methylene chloride ND ug/L 1.0 SW8260B 11/17/08 1429 jlr Naphthalene ND ug/L 1.0 SW8260B 11/17/08 1429 jlr Toluene ND ug/L 1.0 SW8260B 11/17/08 1429 /jlr Xylenes Total ND ug/I 1.0 SW8260B 11/17/08 1429 jlr Surr 12-Dichlorobenzene-d4 95.0 %REC 80-120 SW8260B 11/17/08 1429/jlr Surr Dibromofluoromethane 96.0 %REC 70-130 SW8260B 11/17/08 1429 /jlr Sum p-Bromofluorobenzene 93.0 %REC 80-120 5W8260B 11/17/08 1429 jir Sun Toluene-d8 95.0 %REC 80-120 5W8260B 11/17/08 1429 jlr 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 EIERGY L/IBORA TORIES Client Project Lab ID Client Sample ID ENERGYLASORA TORIES INC p2393 Sail CreekHi/zway 8260 AC Box 3258 Caspec WY82602 Toll Free 888.235.0515 307.235.0515 Fax 307234.1639 casperenergyIab.com www.energylab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 12/31/08 4th Quarter Groundwater Collection Date 11/10/08 1437 C081 10568-004 DateReceived 11/14/08 MW 11 Matrix Aqueous MCL/ Analyses Result Units Qualifier RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 mg/L A2320 11/20/082319 IjI Bicarbonate as HCO3 351 mg/L A2320 11/20/082319 IjI Calcium 42.4 mg/L 0.5 200.7 12/29108 2019 cp Chloride 30 mg/L A4500-Cl 11/21/08 1332 /jal Fluoride mgL 0.1 A4500-F 1/20/08 1414 ljl Magnesium 11.0 mg/L 0.5 200.7 12/29082019cp Nitrogen Ammonia as 0.54 mg/L 0.05 350.1 11/19/08 1208 eli-b Nitrogen NitrateNitrite as ND mgL 0.05 353.2 11/20/08 1316 eli-b Potassium 6.2 mgL 0.5 200.7 12/29/08 2019 cp Sodium 655 mgL E200.7 12/29108 2019 cp Sulfate 1100 mgL 30 A4500-504 11/24/08 1300/jal PHYSICAL PROPERTIES pH 7.95 s.u 0.01 A4500-H 11/17/08 1415dd Solids Total Dissolved TDS 180 1830 mgL 10 A2540 11/17108 1359 jah METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 11/20/08 0649 sml Beryllium ND ug/L 0.50 200.8 11/20/08 0649 smi Cadmium ND ugL 0.50 200.8 11/20/08 0649 sml Chromium ND ug/L 25 200.8 11/20/08 0649 sml Cobalt ND ugh 10 200.8 11/20/08 0649/sml Copper ND ugL 10 200.8 11/20/08 0649 sml Iron 106 ugL 30 200.8 11/20/08 1532/sml Lead ND ugL 1.0 200.8 11/20/080649 sml Manganese 73 ug/L 10 200.8 11/20/08 0649 sml Mercury ND ug/L 0.50 200.8 11/20/08 0649 sml Molybdenum ND ugL 10 E200.8 11/20/080649 sml Nickel ND ug/L 20 E200.8 11/20/08 0649 sml Selenium ND ughL 5.0 200.8 11/20/080649 sml Silver ND ug/L 10 E200.8 11/20/08 1532 sml Thallium ND ughL 0.50 200.8 11/20/080649 sml Tin ND ughL 100 200.8 11/20/080649 sml Uranium ND ughL 0.30 200.8 11/20/080649 sml Vanadium ND ug/L 15 200.8 11/20/080649 sml Zinc ND ugL 10 E200.8 11/20/08 0649 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.1 pCWL 900.1 12/02/08 1507/cgr Gross Alpha minus Rn Precision 0.3 pCl/L 900.1 12/02/08 1507 cgr Gross Alpha minus Rn MDC 0.4 pCi/L 900.1 12/02/08 1507 cgr Report RL Anaiyte 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 ENERGYLABORA TORIES INC 2393 Sail Creek Hqbway 82601 Pa Box 3258 Caspac lfi/V82602 Toll Free 888.235.0515 307.235.0515 Fai 307234.1639 caspenWenergy/ab.com ivwwenergylab.comENERGY LASORA TORIES LABORATORY ANALYTICAL REPORT Client Den ison Mines USA Corp Report Date 2/31/08 Project 4th Quarter Groundwater Collection Date 11/10/08 1437 Lab ID COBI 10568M04 DateReceived 11/14/08 Client Sample ID MW 11 Matrix Aqueous MCLJ Analyses Result Units Qualifier RL QCL Method Analysis Date By DATA QUALITY A/C Balance 3.08 Calculation 12/31/08 1259/ sdw Anions 29.8 meq/L Calculation 12/31/08 1259 sdw Cations 31.7 meq/L Calculation 12/31/08 1259 sdw Solids Total Dissolved Calculated 2040 mg/L Calculation 12/31/08 1259 sdw TDS Balance 0.80-1.20 0.900 Calculation 12/31/08 1259 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 5W8260B 11/17/08 1507 /jlr Benzene ND ug/L 1.0 SW8260B 11/17/08 1507/jlr Carbon tetrachioride ND ug/L 1.0 SW8260B 11/17/08 1507 jlr Chloroform ND ug/L 1.0 5W8260B 11/17/08 1507 /jlr Chioromethane ND ug/L 1.0 5W8260B 11/17/08 1507 jlr Methyl ethyl ketone ND ug/L 20 SW8260B 11/17/08 1507 /jlr Methylene chloride ND ug/L 1.0 SW8260B 11/17/08 1507 /jlr Naphthalene ND ug/L 1.0 5W8260B 11/1708 1507 /jlr Toluene ND ug/L 1.0 SW8260B 11/17/08 1507/jlr Xylenes Total ND ug/L 1.0 SW8260B 11/17/08 1507 jir Surr 2-Dichiorobenzene-d4 101 %REC 80-120 SW8260B 11/17/08 1507 jir Surr Dibromofluoromethane 109 %REC 70-130 5W8260B 11/17/08 1507 /jlr Surr p-Bromofluorobenzene 100 %REC 80-1 20 5W8260B 11/17/08 1507 Jir Sum Toluene-d8 92.0 %REC 80-120 5W8260B 11/17/08 1507/jIr 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 ENERGYLABORA TORIES INC 2393 Saft Creek Hivhway 82601 P0 Box 3258 Caspei WY82602 Th//Free 888.235.0515 307235.0515 Fax 307234.1639 caspesenergy/ab.com www.energylab.comENERGY LARORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/11/08 1415 Lab ID C081 10568-005 DateReceived 11114/08 Client Sample ID MW 12 Matrix Aqueous MCI Analyses Result Units Qualifier RI QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L P.2320 11/20/082326 Iji Bicarbonate as HCO3 430 mg/I P.2320 11/20/08 2326 Iji Calcium 544 mg/L 0.5 E200.7 12/29/08 2023 cp Chloride 56 mg/I A4500-CI 11/21/08 1335/jal Fluoride 02 mg/L GA A4500-F 11/20/08 1416/IjI Magnesium 219 mg/I 0.5 E200.7 12/29/08 2023 cp Nitrogen Ammonia as ND mg/L 0.05 E350.1 11/19/08 1216 eli-b Nitrogen NitrateNitrite as 0.11 mg/I 0.05 E353.2 11/20/08 1317 eli-b Potassium 12.9 mg/I 0.5 E200.7 12/29/08 2023 cp SodIum 308 mg/L E200.7 12/29/08 2023 cp Sulfate 2340 mg/I 30 A4500-S04 11/24/08 1302 /jal PHYSICAL PROPERTIES pH 7.08 s.u 0.01 P.4500-H 11/17/08 1419/dd Solids Total Dissolved TDS 180 3800 mg/I 10 P.254CC 11/17/08 1400 /jah METALS DISSOLVED Arsenic ND uglI 5.0 E200.8 11/20/080655 sml Beryllium ND ug/I 0.50 E200.8 11/20/080655 smi Cadmium ND ug/I 0.50 E200.8 11/20/08 0655 smi Chromium ND ug/I 25 E200.8 11/20/08 0655 smi Cobalt ND ug/L 10 E200.8 11/20/080655 sml Copper ND ug/I 10 E200.8 11/20/080855 smi Iron 35 ug/I 30 E200.8 11/20/08 1619/sml I.ead ND ug/I 1.0 E200.8 11/20/08 0655 sml Manganese 16 ug/L 10 E200.8 11/20/080655 smi Mercury ND ug/I 0.50 E200.8 11/20080655 sml Molybdenum ND ug/I 10 E200.8 11/20/08 0655 smi Nickel ND ug/I 20 E200.8 11/20/080655 sml Selenium 10.8 ug/I 5.0 E200.8 11/20/08 0655 sml Silver ND ug/I 10 E200.8 11/20/08 1619/sml Thallium ND ug/L 0.50 E200.8 11/20/08 0655 sml Tin ND ug/I 100 E200.8 11/20/08 0655/sml Uranium 16.9 ug/I 0.30 E200.8 11/20/080655 smi Vanadium ND ug/I 15 E200.8 11/20/080655 smi Zinc ND ug/I 10 E200.8 11/20/080655 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.3 pCi/I E900.1 12/02/08 1507 cgr Gross Alpha minus Rn Precision 0.3 pCI/I E900.1 12/02/08 1507 cgr Gross Alpha minus Rn MDC 0.4 pCi/I E900.1 12/02/08 1507 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 Not detected at minimum detectable concentration ENERGYLABORA TORIES INC -2393 Sail Creek Hibway 82601 P0 Box 3258 Caspe1 WV82602 To//Free 888.235 0515 3072350515 Fax 307234.1639 casperilenergy/ahcom -www.energylab.com LAIJO/J1 0/lIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/11/08 1415 Lab ID C081 10568-005 DateReceived 11/14/08 Client Sample ID MW 12 Matrix Aqueous MCLJ Analyses Result Units Qualifier RL QCL Method Anasis Date By DATA QUALITY NC Balance 1.34 Calculation 12/3108 1300 sdw Anions 57.4 meqL Calculation 12/31/08 1300 sdw Cations 58.9 meq/L Calculation 12/31/08 1300 sdw Solids Total Dissolved Calculated 3730 mg/L Calculation 12/31/08 1300/ sdw TDS Balance 0.80-1.20 1.02 Callation 12/31/08 1300 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 11/17/08 1544 jIr Benzene ND ugL 1.0 SW8260B 11/17/08 1544jlr Carbon tetrachloride ND ug/L 1.0 SW8260B 11/17/08 1544 jlr Chloroform ND ugL 1.0 SW8260B 11/17/08 1544 /jlr Chloromethane ND ugL 1.0 SW8260B 11/17/08 1544 /jlr Methyl ethyl ketone ND ugL 20 SW8280B 11/17/08 1544 jIr Methylene chloride ND ugL 1.0 SW8260B 11/17/08 1544 jlr Naphthalene ND ug/L 1.0 SW8260B 11/17/08 1544 /jlr Toluene ND ug/L 1.0 SW8280B 11/17/08 1544 jlr Xylenes Total ND ugL 1.0 SW8260B 11/17/08 1544 jlr Surr 2-Dichlorobenzene-d4 98.0 %REC 80-120 SW8260B 1/17/08 1544 jlr Sum Dibromofluoromethane 118 %REC 70-130 SW8260B 11/17/08 1544 jlr Sum p.Bromofluorobenzene 98.0 %REC 80-120 5W8260B 11/17/08 1544 /jIr Sum Toluene-d8 95.0 %REC 80-1 20 SW8260B 11/17/08 1544 jlr 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 ENERGYLAHORA TORIES INC 2393 Sail Creek Hibway 82601 RO 8ax3258 Caspe1c WV82602 roil Free 888.235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com wwwenergy/ab.comE1ERGY LA//ORAl OR/ES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/10/08 1636 Lab ID C081 10568-006 DateReceived 11/14/08 Client Sample ID MW 14 Matrix Aqueous MCI Analyses Result UnIts Qualifier RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 11/20/08 2333/ljl Bicarbonate as llCO3 455 mg/I A2320 11/20/08 2333 IjI Calcium 533 mg/I 0.5 E200.7 12/29/08 2027 cp Chloride 18 mg/I A4500-Cl 11/21/08 1336 jal Fluoride 0.2 mg/I 0.1 A4500-F 11/20/08 1420 IjI Magnesium 153 mg/I 0.5 E200.7 12/29/08 2027 cp Nitrogen Ammonia as ND mg/I 0.05 E350.1 11/19/08 1217 eli-b Nitrogen NitrateNitrite as ND mg/I 0.05 E353.2 11/20/08 1318 eli-b Potassium 12.1 mg/I 0.5 E200.7 12/29/082027 cp Sodium 362 mg/I E200.7 12/29/082027 cp Sulfate 2250 mg/I 30 A4500-S04 11/24/08 1303 /jal PHYSICAL PROPERTIES pH 7.10 s.u 0.01 A4500-HB 11/17/08 1421/dd Solids Total Dissolved TDS 180 3620 mg/I 10 A2540 11/17/08 1400 /jah METALS DISSOLVED Arsenic ND ug/I 5.0 E200.8 11/20/080702 sml Beryllium ND ug/I 0.50 E200.8 11/20/08 0702 sml Cadmium 0.89 ug/L 0.50 E200.8 11/20/08 0702 sml Chromium ND ug/I 25 E200.8 11/20/080702 sml Cobalt ND ug/I 10 E200.8 11/20/080702 sml Copper ND ug/I 10 E200.8 11/20/080702 smi Iron ND ug/I 30 E200.8 11/20/08 1626/sml lead ND ug/I 1.0 E200.8 11/20/080702 smi Manganese 2150 ug/l 10 E200.8 11/20/08 0702 sml Mercury ND ug/I 0.50 E200.8 11/20/08 0702 sml Molybdenum ND ug/I 10 E200.8 11/20/08 0702 smi Nickel ND ug/I 20 E200.8 11/20/08 0702 smi Selenium ND ug/I 5.0 E200.8 11/20/080702 smi Silver ND ug/I 10 E200.8 11/20/08 1626/sml Thallium ND ug/I 0.50 E200.8 11/20/08 0702 sml Tin ND ug/I 100 E200.8 11/20/080702 sml Uranium 63.4 ug/I 0.30 E200.8 11/20/080702 sml Vanadium ND ug/I 15 E200.8 11/20/08 0702 sml Zinc 10 ug/I 10 E200.8 11/20/080702 smi RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.4 pCi/I E900.1 12/02/08 1834 cgr Gross Alpha minus Rn Ii Precision 0.3 pCi/I E900.1 12/0208 1834 cgr Gross Alpha minus Rn MDC 0.4 pCi/I E900.1 12/02/08 1834 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 EIERGY LASORA TORIES ENERGYLABORA TORIES INC 2393 Sail CreokHibway 82601 -P0 Box 3258 Caspei WY82602 Toll Free 888235 0515 3072350515 Fax 307234.1639 casper4energy/ab.com www.energylab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 12/31/08 4th Quarter Groundwater Collection Date 11/10/08 1636 C081 10568-006 DateReceived 11/14/08 Matrix Aqueous Client Project Lab ID Client Sample ID MW 14 MCLJ Analyses Result Units Qualifier RL QCL Method Analysis Date By DATA QUALITY NC Balance 0.393 Calculation 12/31/08 1301 sdw Anions 54.8 meq/L Calculation 12/31/08 1301 sdw Cations 55.3 meq/L Calculation 12/31/08 1301 sdw Solids Total Dissolved Calculated 3570 mg/L Calculation 12/31/08 1301 sdw TDS Balance 0.80-1.20 1.01 Calculation 12/31/08 1301 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 5W8260B 11/17/08 1622 /jlr Benzene ND ug/L 1.0 5W8260B 11/17/08 1622 jir Carbon tetrachloride ND ug/L 1.0 5W8260B 11/17108 1622 /jlr Chloroform ND ug/L 1.0 5W8260B 11/17/08 1622 JIr Chioromethane ND ug/L 1.0 SW8260B 11/17/08 1622 jlr Methyl ethyl ketone ND ug/L 20 SW8260B 11/17/08 1622 /jlr Methylene chloride ND ug/L 1.0 5W8260B 11/17/08 1622 jir Naphthalene ND ug/L 1.0 5W8260B 11/17/08 1622 /jlr Toluene ND ug/L 1.0 SW8260B 11/17/08 1622/jlr Xylenes Total ND ug/L 1.0 5W8260B 11/17/08 1622 /jlr Surr 12-Dichlorobenzene-d4 102 %REC 80-120 SW8260B 11/17/08 1622 /jlr Surr Dibromofluoromethane 113 %REC 70-130 5W8260B 11/17/08 1622 jIr Surr p-Bromofluorobenzene 93.0 %REC 80-120 5W8260B 11/17/08 1622 /jlr Surr Toluene-d8 97.0 %REC 80-1 20 5W8260B 11/17/08 1622 /jlr 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 TORIES ENERGYLABORA TORIES INC -2393 Sail CreekHibway 82601 -P0 Box 3258 Caspei WV82602 Toil Free 888.235.0515 307235.0515 Fax 307234.1639 casperilenergylatz corn wwwenergylab.corn LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denison Mines USA Corp 4th Quarter Groundwater C081 10568-007 MW 15 Report Date 12/31/08 Collection Date 11/11/08 1012 DateRecelved 11/14/08 Matrix Aqueous MCI Analyses Result Units Qualifier RL QCL Method Analysis Date By PHYSICAL PROPERTIES Report RL Analyte reporting limit Definitions QCL Quality control limit MDC Minimum detectable concentration Not detected at minimum detectable concentration MCL Maximum contaminant level ND Not detected at the reporting limit MAJOR IONS Carbonate as C03 ND mg/L A2320 11/20/08 2341 IJI Bicarbonate as HCO3 429 mg/I A2320 11/20/08 2341 IjI Calcium 451 mg/I 0.5 E200.7 12/29/08 2031 cp Chloride 37 mg/I A4500-Cl 11/21/08 1338 jal Fluoride 0.2 mg/I 0.1 A4500-F 11/20/08 1422 ljl Magnesium 164 mg/I 0.5 E200.7 12/29/08 2031 cp Nitrogen Ammonia as ND mg/I 0.05 E350.1 11/19/08 1219 eli-b Nitrogen NitrateNitrite as 0.16 mg/I 0.05 E353.2 11/20/08 1319 eli-b Potassium 10.3 mg/L 0.5 E200.7 12/29/08 2031 cp Sodium 528 mg/I E200.7 12/29/08 2031 cp Sulfate 2430 mg/I 30 A4500-S04 11/24108 1333 /jal pH 7.25 s.u 0.01 A4500-H 11/17/08 1425/dd Solids Total Dissolved TDS 180 3630 mg/I 10 A2540 11/17/08 1400 /jah METALS DISSOLVED Arsenic ND ugL 5.0 E200.8 11/20/08 0708 sml Beryllium ND ugL 0.50 E200.8 11/20/08 0708 sml Cadmium ND ug/I 0.50 E200.8 1/20/08 0708 sml ChromIum ND ug/I 25 E200.8 11/20/08 0708 sml Cobalt ND ug/I 10 E200.8 11/20/08 0708 sml Copper ND ug/L 10 E200.8 11/20/080708 sml Iron ND ug/I 30 E200.8 11/20/08 1633/sml Lead ND ug/I 1.0 E200.8 11/20/080708 sml Manganese ND ug/I 10 E200.8 11/20/08 0708 sml Mercury ND ug/I 0.50 E200.8 11/20/08 0708 sml Molybdenum ND ug/I 10 E200.8 11/20/080708 sml Nickel ND ug/L 20 E200.8 11/20/080708 sml Selenium 111 ugI 5.0 E200.8 11/20/08 0708 sml Silver ND ugI 10 E200.8 11/20/08 1633/sml Thallium ND ugI 0.50 E200.8 11/20/08 0708/sml Tin ND ug/I 100 E200.8 11/20/08 0708 sml Uranium 47.0 ug/L 0.30 E200.8 11/20/08 0708 sml Vanadium ND ug/I 15 E200.8 1/20/08 0708 sml Zinc ND ug/I 10 E200.8 11/20/08 0708 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn II 0.1 pCi/L E900.1 12/02/08 1834 cgr Gross Alpha minus Rn Precision 0.3 pCi/I E900.1 12/02/08 1834 cgr Gross Alpha minus Rn MDC 0.4 pCi/L E900.1 12/02/08 1834 cgr RI increased due to sample matrix interference ENERGY LABOR/I TORIES ENERG YLASORA TORIES INC 2393 Sail Creek Hibway 82601 R0 Box 3258 Caspe WY82602 Toil Free 888.235.0515 307.235.0515 Fax 307.234.1639 caspeitenergy/ab.com wwvenergy/ab.com LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denison Mines USA Corp 4th Quarter Groundwater COSI 10568-007 MW 15 Report Date 12/31/08 Collection Date 11/11/08 1012 DateReceived 11/14/08 Matrix Aqueous MCL/ Analyses Result Units Qualifier RL QCL Method Analysis Date By Report RL Analyte reporting limit Definitions QCL Quality control limit MDC Minimum detectable concentration MCL Maximum contaminant level ND Not detected at the reporting limit DATA QUALITY NC Balance 0.428 Calculation 12/31/08 1301 sdw Anions 58.7 meq/L Calculation 12/31/08 1301 sdw Cations 59.2 meq/L Calculation 12/31/08 1301 sdw Solids Total Dissolved Calculated 3850 mg/L Calculation 12/31/08 1301 sdw TDS Balance 0.80-1.20 0.990 Calculation 12/31/08 1301 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 5W8260B 11/17/08 1700 jlr Benzene ND ug/L 1.0 SW8260B 11/17/08 1700 /jlr Carbon tetrachloride ND ug/L 1.0 SW8260B 11/17/08 1700 /jlr Chloroform ND ug/L 1.0 SW8260B 11/17/08 1700 jIr Chloromethane ND ug/L 1.0 SW8260B 11/17/08 1700 /jlr Methyl ethyl ketone ND ug/L 20 SW8260B 11/17/08 1700 jIr Methylene chloride ND ug/L 1.0 SW8260B 11/17/08 1700 jlr Naphthalene ND ugIL 1.0 SW8260B 11/17/08 1700 jlr Toluene ND ug/L 1.0 5W8260B 11/17/08 1700 jlr Xylenes Total ND ug/L 1.0 SW8260B 11/17/08 1700 jlr Surr 2-Dichlorobenzene-d4 98.0 %REC 80-1 20 SW8260B 11/17/08 1700 jir Sum Dibromofluoromethane 117 %REC 70-130 5W8260B 11/17/08 1700 /jlr Sum p-Bromofluorobenzene 100 %REC 80-120 SW8260B 11/17/08 1700 /jlr Sum Toluene-d8 98.0 %REC 80-120 5W8260B 11/17/08 1700 /jlr ENERGYLASORA TORIES INC 2393 Sail CreekHihway 82601 R0 Box3258 Casper WY82602 Toll Free 888235.0515 307235.0515 Fax 307234.1539 casper1energy/ab.com www.energylab.comEIERGY LABORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/12/08 1147 Lab ID C081 10568-008 DateReceived 11/14/08 Client Sample ID MW 17 Matrix Aqueous MCI Analyses Result Units Qualifier RI QCI Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/I A2320 11/20/08 2348 Iji Bicarbonate as HCO3 481 mg/L A2320 11/20/082348 ljl Calcium 385 mg/I 0.5 E200.7 12/29/08 2047 cp Chloride 32 mg/L A4500-CI 11/21/08 1340 /jal Fluoride 0.3 mg/L 0.1 A4500-F 11/20/08 1426 IjI Magnesium 188 mg/I 0.5 E200.7 12/29/08 2047/cp Nitrogen Ammonia as ND mg/I 0.05 E350.1 11/19/08 1222 eli-b Nitrogen NitrateNitrite as 0.70 mg/L 0.05 E353.2 11/20/08 1429 eli-b Potassium 12.6 mg/I 0.5 E200.7 12/29/082047 cp Sodium 642 mg/I E200.7 12/29/08 2047 cp Sulfate 2530 mg/I 30 A4500-S04 11/24/08 1335 /jaI PHYSICAL PROPERTIES pH 7.10 s.u 0.01 A4500-H 11/17/08 1427/dd Solids Total Dissolved TDS 180 3980 mg/I 10 A2540 11/17/08 1401 /jah METALS DISSOLVED Arsenic ND ug/I 5.0 E200.8 11/20/080741 sml Beryllium ND ug/I 0.50 E200.8 11/20/080741 sml Cadmium ND ug/I 0.50 E200.8 11/20/080741 sml Chromium ND ug/I 25 E200.8 11/20/08 0741 sml Cobalt ND ug/I 10 E200.8 11/20/080741 smi Copper ND ug/I 10 E200.8 11/20/08 0741 sml Iron ND ug/I 30 E200.8 11/20/08 1639/sml lead ND ug/I 1.0 E200.8 11/20/080741 /sml Manganese 92 ug/I 10 E200.8 11/20/080741 sml Mercury ND ug/I 0.50 E200.8 11/20/08 0741 sml Molybdenum ND ug/I 10 E200.8 11/20/080741 sml Nickel ND ug/I 20 E200.8 11/20/080741 sml Selenium 7.9 ug/L 5.0 E200.8 11/20/08 0741 sml Silver ND ug/I 10 E200.8 11/20/08 1639 smi Thallium 0.53 ug/I 0.50 E200.8 11/20/08 0741 sml Tin ND ug/I 100 E200.8 11/20/08 0741 sml Uranium 26.0 ug/I 0.30 E200.8 11/20/080741 sml Vanadium ND ug/I 15 E200.8 11/20/080741 smi Zinc ND ug/I 10 E200.8 11/20/080741 /sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.5 pCi/I E900.1 12/02/08 1834 cgr Gross Alpha minus Rn Precision 0.3 pCi/I E900.1 12/02/08 1834 cgr Gross Alpha minus Rn MDC 0.4 pCi/I E900.1 12/02/08 1834 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 ENERG YLASORA TORIES INC 2393 Sail CreekHqhway 82601 -P0 Sax 3258 Caspe1 WV82502 Tail Pree 888.235.0515 3072350515 Pa 307234.1639 -casperenergy/ab.cam wwwenergy/ab.camEIERCV LABORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 2/31/08 Project 4th Quarter Groundwater Collection Date 11/12/08 1147 Lab ID C081 10568-008 DateReceived 11/14/08 Client Sample ID MW 17 Matrix Aqueous MCLI Analyses Result Units Qualifier RL QCL Method Analysis Date By DATA QUALITY NC Balance 1.18 Calculation 12/31/08 1302/ sdw Anions 61.4 meq/L Calculation 12/31/08 1302 sdw Cations 62.9 meqlL Calculation 12/31/08 1302 sdw Solids Total Dissolved Calculated 4040 mg/L Calculation 12/31/08 1302 sdw TDS Balance 0.80-1.20 0.990 Calculation 12/31/08 1302 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 11/17/08 1738 /jlr Benzene ND ug/L 1.0 SW8260B 11/17/08 1738 jir Carbon tetrachloride ND ug/L 1.0 SW8260B 11117/08 1738 IjIr Chloroform ND ugJL 1.0 SW8260B 11/17/08 1738/jlr Chloromethane ND ug/L 1.0 SW8260B 11/17/08 1738 jlr Methyl ethyl ketone ND ug/L 20 5W8260B 11/17/08 1738 /jlr Methylene chloride ND ug/L 1.0 SW8260B 11/17/08 1738 jir Naphthalene ND ug/L 1.0 8W8260B 11/17/08 1738 jir Toluene ND ug/L 1.0 SW8260B 11/17/08 1738 jir Xylenes Total ND ug/L 1.0 5W8260B 11117/08 1738 jlr Sum 2-Dichlorobenzene-d4 109 %REC 80-120 8W8260B 11/17/08 1738 jlr Surr Dibromofluoromethane 114 %REC 70-130 5W8260B 11/17/08 1738 jIr Sum p-Bromofluorobenzene 99.0 %REC 80-120 5W8260B 11/17/08 1738 /jIr Surr Toluene-d8 97.0 %REC 80-120 SW8260B 11/17/08 1738 jir 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 ENERG YLABORA TORIES INC -2393 Sail CreekHi/zway 8250 P0 Box 3258 Caspe WV82602 To/I Free 888235.0515 307235.0515 Fax 307234.1539 casperenergy/ab.com wwwenergy/ab.ccmEIERGY LALIORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corn Report Date 12/06/08 Project 4th Quarter Groundwater Collection Date 11/04/08 1202 Lab ID C081 10216-004 DateReceived 11/06/08 Client Sample ID MW 18 Matrix Aqueous MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By MAJOR IONS Carbonate as COB ND mg/L A2320 11/11/08 0015 IjI Bicarbonate as HCO3 436 mgL A2320 11/11/080015/11 Calcium 578 mg/L 0.52 E200.7 11/26108 1759 cp Chloride 42 mg/L A4500-Cl 11/17/08 1459 /jal Fluoride 02 mg/L 0.1 A4500-FC 11/10/08 1145/IjI Magnesium 132 mg/L 0.50 E200.7 11/26/08 1759/cp Nitrogen Ammonia as ND mg/L 0.1 E350.1 11/13/08 1208/eli-b Nitrogen NitrateNitrite as ND mg/L 0.05 E353.2 11/12/08 1115/eli-b Potassium 9.47 mg/I 0.50 E200.7 11/26/08 1759 cp Sodium 197 mg/L 3.8 E200.7 11/26/08 1759/cp Sulfate 1880 mg/I 60 A4500-804E 11/18/08 1117/jal PHYSICAL PROPERTIES pH 6.90 s.u 0.01 A4500-H 11/07/08 1O00/dd Solids Total Dissolved TDS 180 3110 mg/I 10 A2540 11/07/08 0938 jah METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 11/15/08 1024/sml Beryllium ND ug/I 0.5 E200.8 11/20/08 1351 sml Cadmium ND ug/L 0.50 E200.8 11/15/08 1024/sml Chromium ND ug/I 20 200.8 11/19/08 1658 smi Cobalt ND ug/L 10 E200.8 11/15/08 1024/sm Copper ND ug/L 10 E200.8 11/15/08 1024/sm Iron 310 ug/L 30 200.7 11/26/08 1759cp Lead ND ug/L 1.0 200.8 11/15/08 1024/sml Manganese 125 uglI 10 E200.8 11/15/08 1024/sm Mercury ND ug/I 0.50 E200.8 11/15/08 1024/sml Molybdenum ND ug/L 10 200.8 11/15/08 1024/sml Nickel ND ug/I 20 200.8 11/15108 1024 smi Selenium ND ug/L 5.0 200.8 11/15/08 1024/sm Silver ND ug/L 10 E200.8 11/15/08 1024/sm Thallium 1.43 ugh 0.50 200.8 11/15/08 1024 sml Tin ND ug/L 100 E200.8 11/15/08 1024/sm Uranium 41.0 ug/L 0.30 200.8 11/15/08 1024 smi Vanadium ND ug/L 20 E200.8 11/19/08 1658 smi Zinc ND uglI 10 200.8 11/15/08 1024/sm RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.4 pCi/L E900.1 11/21/08 1429 cgr Gross Alpha minus Rn Precision 0.7 pCi/I 900.1 11/21/08 1429 cgr Gross Alpha minus Rn MDC 1.0 pCi/L 900.1 11/21/08 1429 cgr Report RI 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 Not detected at minimum detectable concentration EtERGY LARD/IA TORIES ENERG YLABORA TORIES INc 2393 Salt Creek Hiqhway 82601 P0 Box 3258 Caspe WV82602 To//Free 888.2350515 3072350515 Fax 307234.1639 casperenergy/ab.cam www.energylab.com LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denison Mines USA Corp 4th Quarter Groundwater C081 10216-004 MWI8 Report Date 12/06/08 Collection Date 11/04/08 1202 DateReceived 11/06/08 Matrix Aqueous MCL/ Analyses Result Units Qualifiers RI QCL Method Analysis Date By Report RI Analyte reporting limit Definitions QCL Quality control limit MDC Minimum detectable concentration MCI Maximum contaminant level ND Not detected at the reporting limit DATA QUALITY NC Balance 1.21 Calculation 12/01/08 1551/ sdw Anions 47.4 meq/L Calculation 12/01/08 1551 sdw Cations 48.6 meq/L Calculation 12/01/08 1551 sdw Solids Total Dissolved Calculated 3160 mg/I Calculation 12/01/08 1551 sdw TOS Balance 0.80-1.20 0S80 Calculation 12/01/08 1551 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ugI 20 SW8260B 11/11/08 1743/jlr Benzene ND ug/L 1.0 8W8260B 11/11/08 1743/jir Carbon tetrachloride ND ug/I 1.0 5W8260B 11/11/08 1743 jir Chloroform ND ug/L 1.0 SW8260B 11/11/08 1743 jlr Chloromethane ND ug/I 1.0 SW8260B 11/11/08 1743 jIr Methyl ethyl ketone ND ug/I 20 SW8260B 11/11/08 1743 jlr Methylene chloride ND ug/L 1.0 SW8260B 11/11/08 1743 jir Naphthaiene ND ug/L 1.0 SW82BOB 11/11/08 1743 jlr Toluene ND ug/I 1.0 8W8260B 11/11/08 1743 jir Xylenes Total ND ug/I 1.0 SW8260B 11/11/08 1743 jir Sum 2-Dichiorobenzene-d4 98.0 %REC 80-1 20 SW8260B 11/11/08 1743 jir Sum Dibromofluoromethane 106 %REC 70-130 SW8260B 11/11/08 1743 /jlr Surr p-Bromofluorobenzene 92.0 %REC 80-1 20 SW8260B 11/11/08 1743 jir Surr Toluene-d8 97.0 %REC 80-120 SW8260B 11/11/08 1743 jlr ElERCV LA DORA rOD/ks ENERG YLABORA TORIES INC 2393 Sail Creek Highway 82601 PC Box 3258 Caspei WV82602 ToY Free 888235.0515 307.235.0515 Fax 307234.1639 casperenergy/ab.com www.energylab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corn Report Date 12/06/08 4th Quarter Groundwater Collection Date 11/04/08 0937 DateRecelved 11/06/08 Matrix Aqueous Client Project Lab ID C08110216-005 Client Sample ID MW 19 MCI Analyses Result Units Qualifiers RI QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 11/11/08 0022 Iji Bicarbonate as HCO3 265 mg/I A2320 11/11/080022 IJI Calcium 139 mg/I 0.50 E200.7 11/26/08 1803 cp Chloride 26 mg/L A4500-Cl 11/17/08 1501 jal Fluoride 1.1 mg/I 0.1 A4500-F 11/10/08 1147 lii Magnesium 44.6 mg/I 0.50 E200.7 11/26/08 1803 cp Nitrogen Ammonia as ND mg/I 0.1 E350.1 11/13/08 1209/eli-b Nitrogen NitrateNitrite as 2.51 mg/L 0.05 E353.2 11/12/08 1120/eli-b Potassium 4.42 mg/L 0.50 E200.7 11/26/08 1803 cp Sodium 110 mg/I 1.5 E200.7 11/26/08 1803/cp Sulfate 446 mg/L 30 A4500-S04 11/18/08 1119/jal PHYSICAL PROPERTIES pH 7.38 s.u 0.01 A4500-H 11/07/08 1004 dd Solids Total Dissolved TDS 180 954 mg/I 10 A2540 11/07/08 0939 jab METALS DISSOLVED Arsenic ND ug/I 5.0 E200.8 11/15/08 1030 sml Beryllium ND ug/L 0.50 E200.8 11/19/08 0036 /ts Cadmium ND ug/I 0.50 E200.8 11/15/08 1030/sml Chromium ND ug/L 25 E200.8 11/19/080036 ts Cobalt ND ug/L 10 E200.8 11/15/08 1030/sml Copper ND ug/L 10 E200.8 11/15/08 1030 sml Iron ND ug/I 30 E200.7 11/26/08 1803/cp Lead ND ug/I 1.0 E200.8 11/15/08 1030/sml Manganese ND ug/I 10 E200.8 11/15/08 1030 sml Mercury ND ug/I 0.50 E200.8 11/15/08 1030 sml Molybdenum ND ug/I 10 E200.8 11/15/08 1030 sml Nickel ND ug/I 20 E200.8 11/15/08 1030/sml Selenium 9.9 ug/I 5.0 E200.8 11/15/08 1030 smi Silver ND ug/I 10 E200.8 11/15/08 1030 sml Thallium ND ug/I 0.50 E200.8 11/15/08 1030 sml Tin ND ug/I 100 E200.8 11/15/08 1030 sml Uranium 6.51 ug/I 0.30 E200.8 11/15/08 1030/sml Vanadium ND ug/L 15 E200.8 11/19/08 0036 ts Zinc ND ug/I 10 E200.8 11/15/08 1030/sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.3 pCi/I E900.1 11/21/08 1429 cgr Gross Alpha minus Rn Precision 0.6 pCi/I E900.1 11/21/08 1429 cgr GrossAlpha minus Rn MDC 1.0 pCi/I E900.1 11/21/08 1429/cgr Report RI Analyte reporting limit MCI Maximum contaminant level DefinItions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration RI increased due to sample matrix Interference Not detected at minimum detectable concentration EIERGY LABORA TORIES Client Project Lab ID Client Sample ID ENERGVLA9ORA TORIES INC 2393 Sail Creek Hiqhway 82601 P0 Box 3258 Caspe4c VtY82602 Toll Free 885235.0515 307235.0515 Fax 307234.1639 caspenWenergy/ab.com www energy/ab corn LABORATORY ANALYTICAL REPORT Denison Mines USA Corn Report Date 12/06108 4th Quarter Groundwater Collection Date 11/04/08 0937 C081 10216-005 DateReceived 11106/08 MW 19 Matrix Aqueous MW Analyses Result Units Qualifiers RL QCL Method Analysis Date By DATA QUALITY NC Balance 3.13 Calculation 12/01/08 1551 /sdw Anions 14.6 meqL Calculation 12/01/08 1551 sdw Cations 15.5 meq/L Calculation 12/01/08 1551 sdw Solids Total Dissolved Calculated 929 mg/L Calculation 12/01/08 1551 sdw TDS Balance 0.80-1.20 1.03 CalculatIon 12/01/08 1551 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ugL 20 SW8260B 11/11108 1821 /jlr Benzene ND ug/L 1.0 SW8260B 11/11/08 1821 jlr Carbon tetrachioride ND ugiL 1.0 SW8260B 11/11/08 1821 jIr Chloroform ND ug/L 1.0 SW8260B 11/1 1108 1821 jlr Chloromethane ND ug/L 1.0 SW8260B 11/11/08 1821 IjIr Methyl ethyl ketone ND ug/L 20 SW8260B 11/11/08 1821 jlr Methylene chloride ND ug/L 1.0 SW8260B 11/11/08 1821 /jir Naphthalene ND ugh 1.0 5W8260B 11/11/08 1821 jIr Toluene ND uq/L 1.0 SWB26OB 11/11/08 1821 /jlr Xylenes Total ND ugh 1.0 SW8260B 11/11/08 1821 /jlr Surr 12-Dichlorobenzene-d4 99.0 %REC 80-120 SW8260B 11/11/08 1821 /jlr Sum Dibromoftuoromethane 107 %REC 70-130 SW8260B 11/11/08 1821 jlr Surr p-Bromofluorobenzene 91.0 %REC 80-1 20 5W8260B 11/11/08 1821 jlr Sum Toluene-d8 94.0 %REC 80-1 20 SW8260B 11/11/08 1821 jlr 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 YLABORA TORIES INC 2393 Sail Creek Highway 82501 RU Box 3258 Caspei WY82602 To//Free 588.235.0515 307235 0515 Fax 307234.1639 casper.energy/ab.com wwwenergy/ab.comEIERGY LASORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/12/08 1537 Lab ID C081 10568-009 DateReceived 11/14/08 Client Sample ID MW 20 Matrix Aqueous MW Analyses Result Units Qualifier RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/I A2320 11/20/08 2355 IJI Bicarbonate as HCO3 317 mg/L A2320 11/20/08 2355 Iji Calcium 374 mg/L E200.7 12/29/08 2051 cp Chloride 64 mg/I A4500-Cl 11/21/08 1341 /jal Fluoride 0.3 mg/I 0.1 A4500-F 11/20/08 1429 Iji Magnesium 103 mg/I 0.5 E200.7 12/29/082051 cp Nitrogen Ammonia as 0.13 mg/I 0.05 E350.1 11/19/08 1223 eli-b Nitrogen NitrateNitrite as 5.26 mg/I 0.05 E353.2 11/20/08 1431 eli-b Potassium 53.7 mg/I 0.5 E200.7 12/29/082051 cp Sodium 1420 mg/I E200.7 12/29/08 2051 cp Sulfate 3720 mg/L 30 A4500-S04 11/24/08 1337 jal PHYSICAL PROPERTIES pH 7.65 s.u 0.01 A4500-H 11/17/08 1430/dd Solids Total Dissolved TDS 180 5690 mg/L 10 A2540 11/17/08 1403 /jah METALS DISSOLVED Arsenic ND ug/I 5.0 E200.8 11/20/08 0801 /sml Beryllium ND ug/I 0.50 E200.8 11/20/08 0801 sml Cadmium 1.05 ug/I 0.50 E200.8 11/20/08 0801 sml Chromium ND ug/I 25 E200.8 11/20/08 0801 sml Cobalt ND ug/I 10 E200.8 11/20/08 0801 sml Copper ND ug/L 10 E200.8 11/20/080801 sml Iron ND ug/I 30 E200.8 11/20/08 1646 smi Lead ND ug/I 1.0 E200.8 11/20/08 0801 smi Manganese 29 ug/L 10 E200.8 11/20/08 0801 /sml Mercury ND ug/I 0.50 E200.8 11/20/080801 sml Molybdenum ND ug/I 10 E200.8 11/20/080801 /sml Nickel ND ug/L 20 E200.8 11/20/08 0801 sml Selenium ND ug/I 5.0 E200.8 11/20/08 0801 sml Silver ND ug/I 10 E200.8 11/20/08 1646/sml Thallium 1.14 ug/L 0.50 E200.8 11/20/08 0801 sml Tin ND ugIL 100 E200.8 11/20/08 0801 sml Uranium 19.8 ug/L 0.30 E200.8 11/20/08 0801 sml Vanadium ND ug/L 15 E200.8 11/20/080801 sml Zinc 52 ug/L 10 E200.8 11/20/080801 smi RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.4 pCi/I E900.1 12/02/08 1834 cgr Gross Alpha minus Rn Precision 0.3 pCi/L E900.1 12/02/08 1834 cgr Gross Alpha minus Rn MDC 0.4 pCi/I E900.1 12/02/08 1834 cgr Report RI Analyte reporting limit MCL 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 Not detected at minimum detectable concentration __________ENERO VLABORA TORIES INC 2393 Sail Creek Hjqbway 82601 P0 Box 3258 Caspec WY82602 To//Free 885235 0515 3072350515 Fai 307234.1639 casperenergy/ab.com www.energylab.comEISERGY LALO/A TOP/ES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/12/08 1537 Lab ID C081 10568-009 DateReceived 11/14/08 Client Sample ID MW 20 Matrix Aqueous MCI Analyses Result Units Qualifier RL QCL Method Analysis Date By DATA QUALITY NC Balance 3.10 Calculation 12/31/08 1302 sdw Anions 84.9 meqL Calculation 12/31/08 1302 sdw Cations 90.3 meq/L Calculation 12/31/08 1302 sdw Solids Total Dissolved Calculated 5950 mgL Calculation 12/31/08 1302 sdw TDS Balance 0.80-1.20 0.960 Calculation 12/31/08 1302 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 11/17/08 1815 /jlr Benzene ND ugL 1.0 SW8260B 11/17/08 1815jlr Carbon tetrachloride ND ug/L 1.0 SW8260B 11/17/08 1815 /jlr Chloroform ND ug/L 1.0 SW8260B 11/17/08 1815/jIr Chioromethane ND ug/L 1.0 SW8260B 11/17/08 1815 jIr Methyl ethyl ketone ND ug/L 20 SW8260B 11/17/08 1815 /jlr Methylene chloride ND ugIL 1.0 SW8260B 11/17/08 1815/jlr Naphthalene ND ug/L 1.0 SW8260B 11/17108 1615/jlr Toluene ND ug/L 1.0 5W8260B 11/17/08 1815/jlr Xylenes Total ND ug/L 1.0 SW8260B 11/17/08 1815 /jlr Surr 2-Dichlorobenzene-d4 105 %REC 80-120 SW8260B 11/17/08 1815 jIr Surr Dibromofluoromethane 115 %REC 70-1 30 SW8260B 11/17/08 1815 jlr Surr p-Bromofiuorobenzene 96.0 %REC 80-120 SW8260B 11/17/08 1815 jlr Surr Toluene-d8 95.0 %REC 80-120 SW8260B 11/17/08 1815/jlr Report RI Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration ENERG YLASORA TORIES INC 2393 Saft Creek Hqbway 82501 P0 Box3258 Casper WY82602 To//Free 888235.0515 307235.0515 Fax 307234.1639 caspeitenergy/ab.com www.energylab.comEIERGY LAI3ORA TOP/ES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 1/12/08 1452 Lab ID C081 10568-010 DateReceived 11/14108 Client Sample ID MW 22 Matrix Aqueous MCLI Analyses Result UnIts Qualifier RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 11/21/08 0020 ljl Bicarbonate as HCO3 482 mg/L A2320 11/21/08 0020 ljl Calcium 484 mg/L E200.7 12/29/08 2055 cp Chloride 64 mgL A4500-CI 11/2108 1344/jal Fluoride 2.9 mgL 0.1 A4500-F 11/20/08 1433 ljl Magnesium 1050 mg/L 0.5 E200.7 1229/08 2055 cp Nitrogen Ammonia as 0.19 mgL 0.05 E350.1 11/19/08 1220 eli-b Nitrogen NitrateNitrite as 3.91 mg/L 0.05 E353.2 1/20/08 1432/eli-b Potassium 25.0 mg/L 0.5 E200.7 122908 2055 cp Sodium 262 mg/L E200.7 1229/08 2055 cp Sulfate 5520 mg/L 60 A4500-804 11/24/08 1340 jal PHYSICAL PROPERTIES pH 6.26 s.u 0.01 A4500-H 11/1708 1431 dd Solids Total Dissolved TDS 180 7900 mg/L 10 A2540 11/1708 1403 jab METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 11/20/080807 sml Beryllium 2.50 ug/L 0.50 E200.8 11/20080807 smi Cadmium 87.6 ug/L 0.50 E200.8 11/20080807 sml Chromium ND ug/L 25 E200.8 11/20/08 0807 smi Cobalt 312 ug/L 10 E200.8 11/20/08 0807/smi Copper 11 ug/L 10 E200.6 11/20080807 smi Iron 34 ug/L 30 E200.8 11/20/08 1653/sml Lead ND ug/L 1.0 E200.8 11/20/08 0807/sml Manganese 32500 ugL 10 E200.8 11/20/08 0507/sml Mercury ND ug/L 0.50 E200.8 11/20/080807 sml Molybdenum 432 ug/L 10 E200.8 11/20/080807 sml Nickel 140 ug/L 20 E200.8 11/20/080807 sml Selenium 11.9 ug/L 5.0 E200.8 11/2008 0807 smi Silver ND ug/L 10 E200.8 11/20/08 1653 sml Thallium 1.23 ug/L 0.50 E200.8 1120/080807 smi Tin ND ug/L 100 E200.8 11/2008 0807 sml Uranium 48.8 ug/L 0.30 E200.8 11/20080807 sml Vanadium ND ug/L 15 E200.8 11/20/080807 smi Zinc 538 ug/L 10 E200.8 11/20/0808071 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 2.9 pCiL E900.1 12/02/08 1834 cgr Gross Alpha minus Rn Precision 0.6 pCi/L E900.1 12/02/08 1834 cgr Gross Alpha minus Rn MDC 0.4 pCi/L E900.1 12/02/08 1834 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 2393Sail Creek Highway 82601 R0 Box 3258 Caspec WY82602 Toil Free 888.235.0515 3072350515 Fax 307234.1639 casperenergy/ab.com wwwenergy/ab.coinEIERGY LARORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12131/08 Project 4th Quarter Groundwater Collection Date 11/12/08 1452 Lab ID C08110568M10 DateReceived 11/14/08 Client Sample ID MW 22 MatrIx Aqueous MCL Analyses Result Units Qualifier RL QCL Method Analysis Date By DATA QUALiTY NC Balance -0.883 Calculation 12/31/08 1302/ sdw Anions 125 meqL Calculation 12/31/08 1302 sdw Cations 123 meq/L Calculation 12/31/08 1302 sdw Solids Total Dissolved Calculated 7680 mg/I Calculation 12/31/08 1302 sdw TDS Balance 0.80 1.20 1.03 Calculation 12/31/08 1302 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 5W8260B 11/17/08 1853 jir Benzene ND ug/L 1.0 SW8260B 11/17/08 1853 jlr Carbon tetrachloride ND ug/L 1.0 5W8260B 11/17/08 1853 /jlr Chloroform ND ug/L 1.0 SW8260B 11/17/08 1853/jlr Chioromethane ND ug/L 1.0 SW8260B 11/17/08 1853 jir Methyl ethyl ketone ND ug/L 20 5W8260B 11/17/08 1853 /jlr Methylene chloride ND ug/L 1.0 SW8260B 11/17/08 1853 /jlr Naphthalene ND ug/L 1.0 SW8260B 11/17/08 1853 jIr Toluene ND ug/L 1.0 SW8260B 11/17/08 1853/jlr Xylenes Total ND ugh 1.0 5W8260B 11/17/08 1853 fIr Surr 2-Dichlorobenzene-d4 100 %REC 80-1 20 SW8260B 11/17/08 1853 /jlr Sum Dibromofluoromethane 114 %REC 70-130 SW8260B 11/17/08 1853 fir Sum p-Bromofluorobenzene 90.0 %REC 80-120 SW8260B 11/17/08 1853 /jlr Sum Toluene-d8 101 %REC 80-120 SW8260B 11/17/08 1853 /jlr Report RI Analyte reporting limit MCL Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration ENERGYLABORA TORIES INC 2393 Sail Creak Highway 82901 -AC Box 3258 Caspei WV82602 re//Free 888.2350515 3072350515 Fax 307.234.1639 casperGenergy/ab.com www.energylab.comElERCV LA flORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/11108 Project 4th Quarter Groundwater Collection Date 11105/08 1740 Lab ID C081 10279-004 DateReceived 11/07/08 Client Sample ID MW 23 Matrix Aqueous MCI Analyses Result Units Qualifiers RI QCI Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/I A2320 11/12/08 1319/ljl Bicarbonate as HCO3 227 mg/I A2320 11/12/08 1319 ljl Calcium 444 mg/L 0.50 P200.8 11/19/082120 smi Chloride mg/I A4500-Cl 11/17/08 1616/jal Fluoride 0.2 mg/I 0.1 A4500-F 11/10/08 1319/IjI Magnesium 146 mg/L 0.50 P200.8 11/19/08 2120 sml Nitrogen Ammonia as 0.09 mg/I 0.05 A4500-NH3 11/13/08 1230 /jal Nitrogen NitrateNitrite as 0.3 mg/I 0.1 E353.2 11/12/08 1049 /jal Potassium 10.3 mg/I 0.50 P200.8 11/19/08 2120 sml Sodium 360 mg/I 0.50 P200.8 11/19/082120 sml Sulfate 2380 mg/I 30 A4500-504 11/18/08 1148 jal PHYSICAL PROPERTIES pH 6.71 s.u 0.01 A4500-HB 11/10/08 1336/dd Solids Total Dissolved TDS 180 3630 mg/I 10 A2540 11/10/08 1551 /jah METALS DISSOLVED Arsenic ND ug/I 5.0 P200.8 11/19/08 0218 ts Beryllium ND ug/I 0.50 E200.8 11/19/08 0218 /ts Cadmium ND ug/I 0.50 E200.8 11/19/080218 ts Chromium ND ug/I 25 P200.8 11/19/08 0218 /ts Cobalt ND ug/I 10 P200.8 11/19/080218/ts Copper ND ug/I 10 P200.8 11/19/08 0218 /ts Iron ND ug/I 30 P200.6 11/19/08 2120 sml lead ND ug/I 1.0 P200.8 11/19/080218/ts Manganese 453 ug/I 10 P200.8 11/19/080218 ts Mercury ND ug/I 0.50 P200.8 11/19/08 2120/sml Molybdenum ND ug/I 10 P200.8 11/19/080218 ts Nickel 23 ug/L 20 P200.8 11/19/08 0218 /ts Selenium ND ug/I 5.0 P200.8 11/19/082120 smi Silver ND ug/I 10 P200.8 11/19/080218/ts Thallium 1.40 ugJI 0.50 P200.8 11/19/080218/ts Tin ND ug/I 100 P200.8 11/19/080218/ts Uranium 18.1 ug/I 0.30 P200.8 11/19/08 0218 ts Vanadium ND ug/I 15 P200.8 11/19/080218/ts Zinc 38 ug/l 10 E200.8 11/19/082120 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 1.1 pCi/I P900.1 11/21/08 1434 cgr Gross Alpha minus Rn Precision 0.7 pCi/I P900.1 11/21/08 1434 cgr Gross Alpha minus Rn MDC 1.0 pCi/I P900.1 11/21/08 1434 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 ENERO YLASORA TORIES INC 2393 Salt Creek Hiqbway 82601 P0 Box 3258 Caspei WV82602 Toll Free 886235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com www.energylab.comEtERCV LARORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/11/08 Project 4th Quarter Groundwater Collection Date 11/05/08 1740 Lab ID C081 10279-004 DateRecelved 11/07/08 Client Sample ID MW 23 Matrix Aqueous MCL Analyses Result Units Qualifiers RL QCL Method Analysis Date By DATA QUALITY NC Balance -3.18 Calculation 12/01/08 1552 sdw Anions 53.4 meq/L Calculation 12/01/08 1552/ sdw Cations 50.1 meq/L Calculation 12/01/08 1552 sdw Solids Total Dissolved Calculated 3610 mgL Calculation 12/01/08 1552 sdw TDS Balance 0.80-1.20 1.01 Calculation 12/01/08 1552 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 40 SW8260B 11/13/082026 wen Benzene ND ug/L 2.0 5W8260B 11/13/08 2026 wen Carbon tetrachioride ND ug/L 2.0 SW8260B 11/13/082026 wen Chloroform ND ug/L 2.0 SW8260B 11/13/08 2026 wen Chloromethane ND ug/L 2.0 5W8260B 11/13/08 2026 wen Methyl ethyl ketone ND ug/L 40 5W8260B 11/13/082026 wen Methylene chloride ND ug/L 2.0 SW8260B 11/13/08 2026 wen Naphthalene ND ugh 2.0 SW8260B 11/13/08 2026 wen Toluene ND ug/L 2.0 SW8260B 11/13/08 2026 wen Xyienes Total ND ug/L 2.0 SW8260B 11113/08 2026 wen Sum 2-Dichlorobenzene-d4 102 %REC 80-120 SW8260B 11/13/08 2026 wen Sum Dibromofluoromethane 100 %REC 70-130 5W8260B 11/13/082026 wen Surr p-Bromofluorobenzene 102 %REC 80-120 5W8260B 11113/082026 wen Surr Toluene-d8 100 %REC 80-1 20 SW8260B 11/13/08 2026 wen 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 ENERGYLASORA TORIES INC P2393 Sail Creek Hiq/iway 82601 R0 Dcx 3258 Casper WY82602 ThY Free 888.235.0515 307235.0515 Fax 307.234.1639 casperenergy/ab.ccm wwwenergy/ab.ccraENERGY LADO/A TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/06/08 Project 4th Quarter Groundwater Collection Date 11/04/08 1632 Lab ID C081 10216-006 DateReceived 11/06/08 Client Sample ID MW 27 Matrix Aqueous MCI Analyses Result Units Qualifiers RL QCI Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/I A2320 11/11/08 0044 IJI Bicarbonate as HCO3 434 mg/I A2320 11/11/080044 UI Calcium 184 mg/L 0.50 E200.7 11/26/08 1807 cp Chloride 28 mg/I A4500-CI 11/17/08 1504 /jal Fluoride 0.7 mg/I 0.1 A4500-F 11/10/08 1150 UI Magnesium 79.9 mg/L 0.50 E200.7 11126/08 1807/cp Nitrogen Ammonia as ND mg/I 0.1 E350.1 11113/08 1211 eli-b Nitrogen NitrateNitrite as 5.91 mg/I 0.05 E353.2 11/12/08 1121 eli-b Potassium 4.39 mg/I 0.50 E200.7 11126/08 1807 cp Sodium 77.1 mg/I 1.5 E200.7 11/26/08 1807/cp Sulfate 461 mg/I 10 A4500-504 11/18/08 1121 /jal PHYSICAL PROPERTIES pH 7.41 s.u 0.01 A4500-H 11/07/08 1007/dd Solids Total Dissolved TDS 180 1120 mg/L 10 A2540 11/07/08 0940 jah METALS DISSOLVED Arsenic ND ug/I 5.0 E200.8 11/15/08 1051 /sml Beryllium ND ug/I 0.50 E200.8 11/19/08 0043 ts Cadmium ND ug/L 0.50 E200.8 11/15/08 1051 /sml Chromium ND ugJI 25 E200.8 11/19/08 0043 ts Cobalt ND ug/I 10 E200.8 11/15/08 1051 sml Copper ND ug/I 10 E200.8 11/15/08 1051 /sml Iron ND ug/L 30 E200.7 11/26/08 1807/cp Lead ND ug/I 1.0 E200.8 11/15/08 1051 sml Manganese ND ug/L 10 E200.8 11/15/08 1051 /sml Mercury ND ug/I 0.50 E200.8 11/15/081051 /sml Molybdenum ND ug/L 10 E200.8 11/15/08 1051 /sml Nickel ND ug/I 20 E200.8 11/15/08 1051 /sml Selenium 11.2 ug/I 5.0 E200.8 11/15/08 1051 sml Silver ND ugI 10 E200.8 11/15/08 1051 /sml Thallium ND ug/I 0.50 E200.8 11/15/08 1051 sml Tin ND ug/I 100 E200.8 11/15/08 1051 /sml Uranium 31.1 ug/I 0.30 E200.8 11/15/08 1051 /sml Vanadium ND ug/I 15 E200.8 11/19/080043/ts Zinc ND ug/I 10 E200.8 11/15/08 1051 /sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 1.3 pCi/I E900.1 11/21/08 1429 cgr Gross Alpha minus Rn Precision 0.8 pCi/L E900.1 11/21/08 1429/cgr Gross Alpha minus Rn MDC 1.0 pCi/L E900.1 11/21/08 1429 cgr Report RI Analyte reporting limit MCL Maximum contaminant level Definitions QCI 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 CreekHirhway 8250 At 8ox3258 Caspe WY82502 Toil Free 888.235.0515 307235.0515 Fa 307234.1539 caspercenergy/ab.com wwwenergy/ab.comENERGY LABOR/i TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/11/08 1450 Lab ID C081 10568-011 DateReceived 11/14/08 Client Sample ID MW 24 Matrix Aqueous MCI Analyses Result Units Qualifier RI QCI Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/I A2320 11/21/08 0040 Iji Bicarbonate as HCO3 225 mg/I A2320 11/21/08 0040/IjI Calcium 494 mg/L 0.5 E200.7 1229/08 2059 cp Chloride 43 mg/L A4500-Cl 11/21/08 1350 /jal Fluoride 0.1 mg/I 0.1 A4500-F 11/20/08 1436 ljl Magnesium 182 mg/I 0.5 E200.7 1229/08 2059 cp Nitrogen Ammonia as 0.41 mg/I 0.05 E350.1 11/19/08 1158 eli-b Nitrogen NitrateNitrite as 0.16 mg/I 0.05 E353.2 11/20/08 1433 eli-b Potassium 13.2 mg/I 0.5 E200.7 12/29/08 2059 cp Sodium 517 mg/I E200.7 12/29/08 2059 cp Sulfate 2800 mg/I 30 A4500-S04 11/2408 1342 jal PHYSICAL PROPERTIES pH 6.90 s.u 0.01 A4500-HB 11/17/08 1434/dd Solids Total Dissolved TDS @180 4170 mg/I 10 A2540 11/17/08 1404 jah METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 11/20/08 0814 sml Beryllium ND ug/I 0.50 E200.8 11/20/08 0814 smi Cadmium 0.91 ug/I 0.50 E200.8 11/20/08 0814 smi Chromium ND ug/I 25 E200.8 11/20/080814 sml Cobalt ND ug/I 10 E200.8 11/20/08 0814 smi Copper ND ug/I 10 E200.8 1120/08 0814/sml Iron 1520 ug/I 30 E200.8 11/20/08 1659/sml Lead ND ug/I 1.0 E200.8 11/20/08 0814/sml Manganese 3630 ug/I 10 E200.8 11/20/08 0814 sml Mercury ND ug/I 0.50 E200.8 11/20/080814 smi Molybdenum ND ug/I 10 E200.8 11/20/080814 sml Nickel ND ug/I 20 E200.8 11/20/080814/smi Selenium ND ug/I 5.0 E200.8 11/20/08 0814 smi Silver ND ug/I 10 E200.8 11/20/08 1659 sml Thallium 0.53 ug/I 0.50 E200.8 11/20/08 0814 smi Tin ND ug/I 100 E200.8 11/2008 0814 sml Uranium 0.50 ug/I 0.30 E200.8 11/20/08 0814 smi Vanadium ND ug/I 15 E200.8 11/20/080814 sml Zinc 24 ug/I 10 E200.8 11/20/08 0814/sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.5 pCi/I E900.1 12/02/08 1834 cgr Gross Alpha minus Rn Precision 0.3 pPi/I E900.1 12/02/08 1834 cgr Gross Alpha minus Rn MDC 0.4 pCi/I E900.1 12/02/08 1834 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 fflZff EAIERGYLABORA TORIES INC 2393 Ball CreekHiqbway 82601 P0 Box 3258 Casper WY82602 ____________Toll Free 988.235.0515 307235 0575 Fax 307234.1639 casperenerqy/ab.com wwwenerqy/ab.com LABORATORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/11/08 1450 Lab ID C081 10568-011 DateReceived 11/14/08 Client Sample ID MW 24 Matrix Aqueous MCLI Analyses Result Units Qualifier RL QCL Method Analysis Date By DATA QUALITY NC Balance -0.566 Calculation 12/31/081303/ sdw Anions 63.2 meq/L Calculation 12/31/08 1303/sdw Cations 62.5 meqlL Calculation 12/31/08 1303/ sdw Solids Total Dissolved Calculated 4180 mg/L Calculation 12/31/08 1303 sdw TDS Balance 0.80 1.20 1.00 Calculation 12/31/08 1303 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 8W8260B 11/17/08 1931 /jlr Benzene ND ug/L 1.0 SW8260B 11/17/08 1931 /jlr Carbon tetrachloride ND ug/L 1.0 SW8260B 11/17/08 1931 Jlr Chloroform ND ug/L 1.0 SW8260B 11/17/08 1931 /jlr Chloromethane ND ug/L 1.0 SW8260B 11/17/08 1931 /jlr Methyl ethyl ketone ND ug/L 20 SW8260B 11/17/08 1931 jlr Methylene chloride ND ugh 1.0 SW8260B 11/17/08 1931 jlr Naphthalene ND ug/L 1.0 SW8260B 11/17/08 1931 jlr Toluene ND ug/L 1.0 SW8260B 11/17/08 1931 /jlr Xylenes Total ND ugh 1.0 5W8260B 11/17/08 1931 jlr Sum 2-Dichlorobenzene-d4 108 %REC 80-120 SW8260B 11/17/08 1931 /jlr Sun Dibromofluoromethane 107 %REC 70-130 SW8260B 11/17/08 1931 /jlr Sum p-Bromofluorobenzene 99.0 %REC 80-120 5W8260B 11/17/08 1931 jlr Surr Toluene-d8 100 %REC 80-120 SW8260B 11/17/08 1931 /jlr 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 LASORA TORIES Client Project Lab ID Client Sample ID ENERO VLASORA TORIES INC p2393 Sail CreakHiqhway 82501 P0 Box 3258 Caspe WV82602 Toll Free 888235.0515 307235.0515 Fax 307.234.1639 casperllenergy/ab.com wwwenergy/ab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 12/31/08 4th Quarter Groundwater Collection Date 11/10/08 1217 C081 10568-012 DateReceived 11/14/08 MW 25 Matrix Aqueous MCLI Analyses Result Units Qualifier RI QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 11/21/080047 IjI Bicarbonate as HCO3 392 mg/I A2320 11/21/08 0047 IjI Calcium 383 mg/I 0.5 E200.7 12129108 2111 cp Chloride 30 mg/I A4500-Cl 11/21108 1352 jal Fluoride 0.3 mg/I 0.1 A4500-F 11/20/08 1442 Iji Magnesium 129 mg/I 0.5 E200.7 12/29/08 2111/cp Nitrogen Ammonia as 0.39 mgL 0.05 E350.1 11119108 1200 eli-b Nitrogen NitrateNitrite as ND mg/I 0.05 E353.2 11/20/08 1434/eli-b Potassium 9.8 mg/I 0.5 E200.7 12/29/08 2111 cp Sodium 321 mg/I E200.7 12/29/082111 /cp Sulfate 1800 mg/I 30 A4500-S04 11/24/08 1344 jal PHYSICAL PROPERTIES pH 7.21 s.u 0.01 A4500-H 11/17/08 1437/dd METALS DISSOLVED Arsenic ND ug/I 5.0 E200.8 11/20/080820 sml Beryllium ND ug/L 0.50 E200.8 11120/080820 sml Cadmium 1.20 ug/I 0.50 E200.8 11/20/08 0820 smi Chromium ND ug/L 25 E200.8 11/20/08 0820 sml Cobalt 11 ug/I 10 E200.8 11/20/08 0820 sml Copper ND ug/I 10 E200.8 11/20/08 0820 sml Iron ND ug/I 30 E200.8 11/20/08 1706/sml Lead ND ug/I 1.0 E200.8 11/20/08 0820 sml Manganese 1610 uglI 10 E200.8 11/20/08 0820/sml Mercury ND ug/I 0.50 E200.8 11/20/08 0820 smi Molybdenum 11 ug/L 10 E200.8 11/20/08 0820 sml Nickel ND ug/I 20 E200.8 11/20/080820 sml Selenium ND ug/I 5.0 E200.8 11/20/08 0820 sml Silver ND ug/I 10 E200.8 11/20/08 1706sml Thallium 0.89 uglI 0.50 E200.8 11/20/08 0820 cml Tin ND ug/L 100 E200.8 11/20/08 0820 sml Uranium 5.35 ug/I 0.30 E200.8 11/20/08 0820 cml Vanadium ND ug/I 15 E200.8 11/20/08 0820 sml Zinc ND ug/L 10 E200.8 11/20/08 0820 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.5 pCi/I E900.1 12/02/08 1834 cgr Gross Alpha minus Rn Precision 0.3 pCi/I E900.1 12/02108 1834 cgr Gross Alpha minus Rn MDC 0.4 pCI/I E900.1 12102108 1834 cgr Report RI Analyte reporting limit MCL 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 EAERGY LABORA TORIES ENERGYLAHORA TORIES INC -2393 Sell Creek Hlqbway 82601 -RU Box 3258 Caspei kVV82802 Toll Free 888.235.0515 307235.0515 Fax 307234.1639 casperªenergy/ab.com wwwenergylab.corn LABORATORY ANALYTICAL REPORT Denison Mines USA Corn Report Date 12/31/08 4th Quarter Groundwater Collection Date 11/10/08 1217 Coal 10566-012 DateReceived 11/14/06 Matrix Aqueous Client Project Lab ID Client Sample ID MW 25 MCLI Analyses Result units Qualifier RL QCL Method AnalysIs Date By DATA QUALITY NC Balance -0.904 Calculation 12/31/08 1303/ sdw Anions 44.7 meq/L Calculation 12/31/08 1303 sdw Cations 43.9 meq/L Calculation 12/31/08 1303 sdw Solids Total Dissolved Calculated 2870 mg/I Calculation 12/31/08 1303 sdw TDS Balance 0.80-1.20 0.950 Calculation 12/31/08 1303 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/I 20 5W8260B 11/17/08 2009 jlr Benzene ND ug/L 1.0 5W8260B 11/17/08 2009 jlr Carbon tetrachloride ND ug/L 1.0 5W8260B 11/17/08 2009 jlr Chloroform ND ug/L 1.0 SW8260B 11/17/082009 /jlr Chloromethane ND ug/L 1.0 SW8260B 11/17/08 2009 jlr Methyl ethyl ketone ND ug/L 20 5W8260B 11/17/082009/jlr Methylene chloride ND ug/I 1.0 SW8260B 11/17/08 2009 jlr Naphthalene ND ug/I 1.0 5W8260B 11117/08 2009/jlr Toluene ND ug/L 1.0 5W8260B 11/17/082009 jlr Xylenes Total ND ug/I 1.0 SW8260B 11/17/082009 /jlr Sum 2-Dichlorobenzene-d4 102 %REC 80-1 20 SW8260B 11/17/08 2009 /jlr Surr Dibromofluoromethane 107 %REC 70-1 30 5W8260B 11/17/08 2009 /jlr Sum p-Bromofluorobenzene 94.0 %REC 80-1 20 5W8260B 11/17/082009 /jlr Surr Toluene-d8 97.0 %REC 80-120 SW8260B 11/17/08 2009 /jlr 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 ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 82601 R0 Box 3258 Caspec kVV826O2 roll Free 888.235.0515 3072350515 Fax 307234.1639 casperªenergyIaAcom wwwenergylab.comEIERGY LARORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/13/08 0810 Lab ID C081 10568-013 DateReceived 11/14/08 Client Sample ID MW 26 Matrix Aqueous MCLJ Analyses Result UnIts Qualifier RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 11/21/08 0055 IjI Bicarbonate as HCO3 388 mg/L A2320 11/21/08 0055 IjI Calcium 511 mg/L 0.5 200.7 12/10/08 1442cp Chloride 59 mg/L A4500-Cl 11/21/08 1354 jal Fluonde 0.3 mg/L 0.1 A4500-F 1/20/08 1453 Iji Magnesium 179 mg/L 0.5 E200.7 12/10/08 1442 cp Nitrogen Ammonia as 0.13 mgL 0.05 E350.1 11/1908 1201 eli-b Nitrogen NitrateNitrite as 0.90 mgL 0.05 353.2 11/20/08 1435 eli-b Potassium 9.6 mgL 0.5 200.7 12110/08 1442 cp Sodium 164 mg/L E200.7 12/10/08 1442/cp Sulfate 2160 mg/L 60 A4500-S04 11/24/08 1345jal PHYSICAL PROPERTIES pH 7.05 s.u 0.01 A4500-l-l 11/17/08 1440 dd Solids Total Dissolved TDS 180 3170 mgIL 10 A2540 11/17/08 1406 jah METALS DISSOLVED Arsenic ND ug/L 5.0 200.8 11/20/08 0827 smi Beryllium ND ug/L 0.50 200.8 11/20/080827 sml Cadmium ND ug/L 0.50 200.8 11/20/080827 sml Chromium ND ug/L 25 200.8 11/20/080827 sml Cobalt ND ug/L 10 200.8 11/20/08 0827 sml Copper ND ug/L 10 200.8 11/20/08 0827 sml Iron 365 ug/L 30 200.8 11/20/08 1713/sml Lead ND ug/L 1.0 E200.8 11/20/080827 sml Manganese 1260 ug/L 10 200.8 11/20/08 0827 sml Mercury ND ug/L 0.50 200.8 11/20/080827 sml Molybdenum ND ug/L 10 200.8 11/20/080827 smi Nickel ND ug/L 20 200.8 11/20/080827/sml Selenium 15.5 ug/L 5.0 E200.8 11/20/080827 sml Silver ND ugh 10 200.8 11/20/08 1713/sml Thallium ND ug/L 0.50 200.8 11/20/08 0827 sml Tin ND ug/L 100 E200.8 11/201080827/sml Uranium 54.0 ug/L 0.30 E200.8 11/20/080827 sml Vanadium ND ug/L 15 E200.8 11/20/08 0827 smi Zinc ND ug/L 10 E200.8 11/20/08 0827 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 2.1 pCi/L E900.1 12/02/08 1834 cgr Gross Alpha minus Rn Precision 0.5 pCi/I 900.1 12/02/08 1834 cgr Gross Alpha minus Rn MDC 0.4 pCi/I E900.1 12102108 1834 cgr Report RI 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 EtERGY LA DORA TORIES ENERGYLASORA TORIES INC 2393 Saft Creek Hihway 82601 .RC Box 3258 Caspe WV82602 To//Free 888.235.0515 307235.0515 Faa 307234.1639 casperenergy/aLzcom wwwenergy/ab.com LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denison Mines USA Corp 4th Quarter Groundwater G081 10558-013 MW 26 Report Date 12/31/08 Collection Date 11/13/08 0810 DateReceived 11/14/08 Matrix Aqueous MCL/ Analyses Result Units Qualifier pj QCL Method Analysis Date By Report RL Analyte reporting limit Definitions QCL Quality control limit MDC Minimum detectable concentration MCL Maximum contaminant level ND Not detected at the reporting limit DATA QUALITY NC Balance -5.41 Calculation 12/17/08 1618/ sdw Anions 53.1 meq/L Calculation 12/17/08 1618 sdw Cations 47.6 meq/L Calculation 12/17/08 1618 sdw Solids Total Dissolved Calculated 3290 mg/I Calculation 12/17/08 1618 sdw TDS Balance 0.80-1.20 0.960 Calculation 12/17/08 1618 sdw The Anion Cation balance was confirmed by re-analysis VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 40 SW8260B 11/18/08 0459 /jlr Benzene ND ug/L 2.0 SW8260B 11/18/08 0459 /jlr Carbon tetrachloride ND ug/L 2.0 SW8260B 11/18/08 0459 /jlr Chloroform 950 ug/L 200 SW8260B 11/18/080112/jlr Chloromethane ND ug/L 2.0 SW8260B 11/18/08 0459 /jlr Methyl ethyl ketone ND ug/L 40 SW8260B 11/18/08 0459 /jlr Methylene chloride 17 ug/L 2.0 SW8260B 11/18/08 0459 jir Naphthalene ND ug/L 2.0 SW8260B 11/18/08 0459 jIr Toluene ND ug/L 2.0 SW8260B 11/18/08 0459/jlr Xylenes Total ND ug/L 2.0 SW8260B 11/18/080459 /jlr Surr 12-Dichlorobenzene-d4 112 %REC 80-1 20 SW8260B 11/18/080459 /jlr Surr Dibromofluoromethane 116 %REC 70-130 SW8280B 11/18/080459 jir Surr p-Bromofluorobenzene 100 %REC 80-1 20 SW8260B 11/18/08 0459 /jlr Sum Totuene-d8 95.0 %REC 80-120 5W8260B 11/18/080459 jlr EIERGY LA/SORA OWLS ENERO YLABORA TORIES INC -2393 Sail CreekHibway 8260 P0 Box 3258 Caspac WY82602 Toil Free 888.235.0515 307235.0515 Fax 307234.1639 casperc5energy/ab.ccm wwwenecgy/ab.com LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denison Mines USA Corp 4th Quarter Groundwater C081 10216-006 MW 27 Report Date 12/06/08 Collection Date 11/04/08 1632 DateReceived 11/06/08 Matrix Aqueous MW Analyses Result Units Qualifiers RL QCL Method Analysis Date By Report RL Analyte reporting limit Definitions QCL Quality control limit MDC Minimum detectable concentration MCL Maximum contaminant level ND Not detected at the reporting limit DATA QUALITY NC Balance 3.40 Calculation 12/01/08 1551 sdw Anions 18.0 meqL Calculation 12/01/08 1551 sdw Cations 19.2 meqL Calculation 12/01/08 1551 sdw Solids Total Dissolved Calculated 1100 mgL Calculation 12/01/08 1551 sdw TDS Balance 0.80-1.20 02 Calculation 12/01/08 1551/ sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ugh 20 SW8260B 11/11/082326/jIr Benzene ND ug/L 1.0 SW8260B 11/11/08 2326 jlr Carbon tetrachloride ND ug/L 1.0 SW8260B 11/11/08 2326/jlr Chloroform ND ugh 1.0 SW82608 11/11082326 /jlr Chloromethane ND ugL 1.0 5W8260B 1111/082326 jlr Methyl ethyl ketone ND ughL 20 SW8260B 1111/082326 JIr Methylene chloride ND ug/L 1.0 SW8260B 1111 1/08 2326 /jlr Naphthalene ND ug/L 1.0 SW8260B 11/11/082326 jlr Toluene ND ug/L 1.0 SW8260B 11/11/08 2326/jlr Xylenes Total ND ug/L 1.0 SW8260B 11/11/082326 jlr Sum 2-Dichlorobenzene-d4 102 %REC 80-1 20 SW8260B 11111/082326 jlr Surr Dibromofluoromethane 117 %REC 70-1 30 SW8260B 11/11/082326 jlr Sum p-Bromofluorobenzene 96.0 %REC 80-120 SW8260B 11/11/08 2326 jlr Sum Toluene-d8 92.0 %REC 80-1 20 SW8260B 1111/08 2326 /jlr EIERGY LAbORA TORIES ENERG YLASORA TORIES INC 2393 Sail Creak Hiqhway 82801 P0 Box 3258 Caspei WY82502 Toil Free 888.235.0515 307.235.0515 Fax 307234.1539 casperPenergylab.com www.energylab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 12111/08 4th Quarter Groundwater Collection Date 11/05/08 0938 C081 10279-001 DateReceived 11/07/08 MW 28 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 A2320 11/12/08 1240 Ijl Bicarbonate as I-lCO3 154 mg/L A2320 11/12/08 1240 IJI Calcium 546 mg/L 1.0 E200.7 12/01/081408 cp Chloride 99 mg/L A4500-CI 11/17/08 1603 /jal Fluoride 0.6 mg/L 0.1 A4500-F 11/10/08 1311 Iji Magnesium 176 mgIL 0.50 E200.7 12/01/08 1408/cp Nitrogen Ammonia as 0.10 mg/L 0.05 A4500-NH3 11/1308 1218 /jal Nitrogen NitrateNitrite as 0.1 mg/L 0.1 E353.2 11/12/08 1036 /jal Potassium 12.0 mg/L 0.50 E200.7 12/01/08 14081 cp Sodium 312 mg/L 7.6 E200.7 12/01/08 1408 cp Sulfate 2340 mg/L 30 A4500-S04 11/18/08 1141 jal PHYSICAL PROPERTIES pH 6.79 s.u 0.01 A4500-I-l 11/10/08 1158/dd Solids Total Dissolved TDS 180 3650 mg/L 10 A2540 11/10/08 1550 /jah METALS DISSOLVED Arsenic 14.7 ugh 5.0 E200.8 11/19/08 0117 ts Beryllium ND ug/L 0.50 E200.8 11/19/080117/ts Cadmium 3.87 ug/L 0.50 E200.8 11/19/080117/ts Chromium ND ug/L 25 E200.8 11/19/08 0117/ts Cobalt 29 ug/L 10 E200.8 11/19/080117/ts Copper ND ug/L 10 E200.8 11/19/080117/ts Iron 57 ug/L 30 E200.8 11/19/08 1915/sml Lead ND ug/L 1.0 E200.8 11/19/080117/ts Manganese 1540 ug/L 10 E200.8 11/19/08 0117/ts Mercury ND ug/L 0.50 E200.8 11/19/08 1915/sml Molybdenum ND ug/L 10 E200.8 11/19/080117/ts Nickel 21 ug/L 20 E200.8 11/19/08 1915/sml Selenium ND ug/L 5.0 E200.8 11/19/08 1915 sml Silver ND ug/L 10 E200.8 11/19/080117/ts Thallium 0.79 ug/L 0.50 E200.8 11/1908 0117 ts Tin ND ug/L 100 E200.8 11/19/080117/ts Uranium 3.55 ug/L 0.30 E200.8 11/19/08 0117/ts Vanadium ND ug/L 15 E200.8 11/19/080117/ts Zinc 37 ug/L 10 E200.8 11/19/08 1915/sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.8 pCibL E900.1 11/21/08 1434 cgr Gross Alpha minus Rn Precision 0.7 pCi/L E900.1 11/21/08 1434 cgr Gross Alpha minus Rn MDC 1.0 pCi/L E900.1 11/21/08 1434 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 ENERO VLAHORA TORIES INC 2393 Salt CreekHbway 8260 P0 Box 3258 Caspo WV82602J7To//Free 888.235 0515 307235.0515 Fax 307.234.1639 casperenergy/ab.com www energy/ab corn LASORA TORIES LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denison Mines USA Corp 4th Quarter Groundwater C081 10279-001 MW 28 Report Date 12/11/08 Collection Date 11/05108 0938 DateReceived 11/07/08 Matrix Aqueous MW Analyses Result Units Qualifiers RL QCL Methed Analysis Date By Report RL Analyte reporting limit Definitions QCL Qualitl control limit MDC Minimum detectable concentration MCL Maximum contaminant level DATA QUALITY NC Balance 1.45 Calculation 12/09/08 1741 sdw Anions 54.0 meq/L Calculation 12/09/08 1741 sdw Cations 55.6 meq/L Calculation 12/09/08 1741 sdw Solids Total Dissolved Calculated 3570 mg/L Calculation 12/09/08 1741 sdw TDS Balance 0.80 1.20 1.02 Calculation 12/09/08 1741 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 11/12/08 0004/jlr Benzene ND ug/L 1.0 SW8260B 11/12/08 0004/jIr Carbon tetrachloride ND ug/L 1.0 SW8260B 11/12/08 0004 jlr Chloroform ND ug/L 1.0 SW8260B 11/12/08 0004/jIr Chioromethane ND ug/L 1.0 SW8260B 11/12/080004 jlr Methyl ethyl ketone ND ug/t 20 SW8260B 11/12/08 0004 jIr Methylene chloride ND ug/L 1.0 SW8260B 11/12/08 0004 jlr Naphthalene ND ug/L 1.0 SW8260B 11/12/080004/jlr Toluene ND ug/L 1.0 SW8260B 11/12/08 0004 jir Xylenes Total ND ug/L 1.0 SW8260B 11/12/08 0004 /jlr Sum 2-Dichlorobenzene-d4 92.0 %REC 80-120 SW8260B 11/12/08 0004 jir Sum Dibromofluoromethane 111 %REC 70-1 30 SW8260B 11/12/080004 /jlr Surr p-Bromofluorobenzene 88.0 %REC 80-120 5W8260B 11/12080004 jir Surr Toluene-d8 97.0 %REC 80-1 20 SW8260B 11/12/08 0004 /jlr ND Not detected at the reporting limit ENERG VLABORA TORIES INC 2393 Sail Creek Hibway 82601 AC Box 3258 Caspec WV82602 To//Free 888.235.0515 307235.0515 Fax 307234.1639 casperenergyIab.com www.energylab.comEtERGY LABOR/i TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12111/08 Project 4th Quarter Groundwater Collection Date 11/05/08 1137 Lab ID C081 10279-002 DateRecelved 11/07/08 Client Sample ID MW 29 Matrix Aqueous MCI/ Analyses Result Units Qualifiers RI QCI Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 11/12/08 1300 Iji Bicarbonate as HCO3 328 mg/L A2320 11/12/08 1300 iji Calcium 518 mg/L 1.0 E200.7 12/01/08 1420/cp Chloride 32 mg/I A4500-Cl 11/17/08 1605 jal Fluoride 0.8 mg/I 0.1 A4500-F 11/10/08 1313 Iji Magnesium 231 mg/I 0.50 E200.7 12/01/08 1420 cp Nitrogen Ammonia as 0.87 mg/i 0.05 A4500-NH3 11/13/08 1220 jal Nitrogen NitrateNitrite as ND mg/I 0.1 E353.2 11/12/08 1039 /jai Potassium 18.1 mg/I 0.50 E200.7 12/01/08 1420 cp Sodium 508 mg/I 7.6 E200.7 12/01/08 1420 cp Sulfate 2920 mg/I 60 A4500-S04 11/18/08 1145 /jal PHYSICAL PROPERTIES pH 6.80 s.u 0.01 A4500-H 11/10/08 1329/dd Solids Total Dissolved TDS 180 4380 mg/I 10 A2540 11/10/08 1550 /jah METALS DISSOLVED Arsenic ND ug/I 5.0 E200.8 11/19/08 1922 smi Beryllium ND ug/I 0.50 E200.8 11/19/08 0124 ts Cadmium ND ug/I 0.50 E200.8 11/19/08 1922/sml Chromium ND ug/I 25 E200.8 11/19/08 0124/ts Cobalt ND ug/I 10 E200.8 11/19/08 0124 ts Copper ND ug/I 10 E200.8 11/19/08 1922/smi iron 1720 ug/I 30 E200.8 11/19/08 1922 /sml Lead ND ug/I 1.0 E200.8 11/19/08 0124 ts Manganese 5260 ug/I 10 E200.8 11/19/08 0124 ts Mercury ND ug/I 0.50 E200.8 11/19/08 1922/smi Molybdenum ND ug/I 10 E200.8 11/19/08 0124/ts Nickel ND ug/I 20 E200.8 11/19/08 0124/ts Selenium ND ug/I 5.0 E200.8 11/19/08 1922 smi Silver ND ug/I 10 E200.8 11/19/08 0124 ts Thallium ND ug/I 0.50 E200.8 11/19/08 0124 ts Tin ND ug/I 100 E200.8 11/19/08 0124 ts Uranium 10.8 ug/I 0.30 E200.8 11/19/080124/ts Vanadium ND ug/I 15 E200.8 11/19/080124/ts Zinc 26 ug/I 10 E200.8 11/19/08 1922/sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 1.1 pCi/I E900.1 11/21/08 1434 cgr Gross Alpha minus Rn Precision 0.7 pCi/I E900 11/21/08 1434 cgr Gross Alpha minus Rn MDC 1.0 pCi/I E900.1 11/21/08 1434/cgr Report RI Anaiyte 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 EtERGY LABORATORIES ENERGYLASORA TORIES INC 2393 Sail Creek Hiqbway 82601 Pa Box 3258 Caspe4 WV82602 To//Free 888.235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com www.energylab.com LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denison Mines USA Corn 4th Quarter Groundwater C081 10279-002 MW 29 Report Date 12111/08 Collection Date 11/05/08 1137 DateReceived 11/07/08 Matrix Aqueous MCLI Analyses Result Units Qualifiers RL QCL Method Analysis Date By Report RL Analyte reporting limit Definitions QCL Quality control limit MCI Maximum contaminant level ND Not detected at the reporting limit DATA QUALITY NC Balance 0.283 Calculation 12/09/08 1742 sdw Anions 67.1 meq/I Calculation 12/09/08 1742/ sdw Cations 67.5 meq/L Calculation 12/09/08 1742 sdw Solids Total Dissolved Calculated 4410 mg/I Calculation 12/09/08 1742 sdw TDS Balance 0.80-1.20 0.990 Calculation 12/09/08 1742 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/I 20 5W8260B 11/12/080042 jlr Benzene ND ug/L 1.0 5W8260B 11/12/080042 jlr Carbon tetrachloride ND ug/L 1.0 SW8260B 11/12/080042 jlr Chloroform ND ug/L 1.0 5W8260B 11/12/08 0042 jIr Chloromethane ND ug/L 1.0 SW8260B 11/12/08 0042 jlr Methyl ethyl ketone ND ug/I 20 5W8260B 11/12/080042 /jlr Methylene chloride ND ug/L 1.0 5W8260B 11/12/080042 jlr Naphthalene ND ugIL 1.0 5W8260B 11/12/080042 /jlr Toluene ND ug/I 1.0 5W8260B 11/12/08 0042 jlr Xylenes Total ND ug/L 1.0 5W8260B 11/12/080042 jlr Surr 2-Dichlorobenzene-d4 99.0 %REC 80-120 SW8260B 11/12/08 0042 jir Surr Dibromofluoromethane 116 %REC 70-130 5W8260B 11/12/08 0042 jlr Surr p-Bromofluorobenzene 87.0 %REC 80-120 SW8260B 11/12/080042 jlr Surr Toluene-d8 98.0 %REC 80-120 5W8260B 11/12/080042 /jlr MDC Minimum detectable concentration ENERGYLABORA TORIES INC 2393 Sail Creek Hihway 82601 P0 Box 3258 Caspei WY82502 roll Free 888.235.0515 307235 0515 Fax 307234.1639 caspeitenergylab.com wwwenergy/ab.comENERGY LABORATORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corn Report Date 12111/08 Project 4th Quarter Groundwater Collection Date 11/05/08 1352 Lab ID G081 10279-003 DateReceived 11/07/08 Client Sample ID MW 30 Matrix Aqueous MCI Analyses Result Units QualIfIers RI QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 11/12/08 1306 IjI Bicarbonate as HCO3 179 mg/I A2320 11/12/08 1306 IjI Calcium 287 mg/L 0.50 E200.7 12/01/08 1428 cp Chloride 162 mg/I A4500-Cl 11/17/08 1611 /jal Fluoride 0.4 mg/I 0.1 A4500-F 11/10/08 1316 IjI Magnesium 73.3 mg/I 0.50 E200.7 12/01/08 1428 cp Nitrogen Ammonia as 0.12 mg/I 0.05 A4500-NH3 11/13/08 1228/jal Nitrogen NitrateNitrite as 15.6 mg/I 0.2 E353.2 11/12/08 1046 jal Potassium 7.43 mg/I 0.50 E200.7 12/01/08 1428 cp Sodium 111 mg/I 1.5 E200.7 12/01/08 1428/cp Sulfate 799 mg/I 30 A4500-504 11/18/08 1147/jal PHYSICAL PROPERTIES pH 7.14 s.u 0.01 A4500-H 11/10/08 1333/dd Solids Total Dissolved TDS 180 1610 mg/I 10 A2540 11/10/08 1551 jah METALS DISSOLVED Arsenic ND ug/I 5.0 E200.8 11/19/08 0131 /ts Beryllium ND ug/I 0.50 E200.8 11/19/08 0131 /ts Cadmium ND ug/I 0.50 E200.8 11/19/08 0131 /ts Chromium ND ug/I 25 E200.8 11/19/08 0131 /ts Cobalt ND ug/I 10 E200.8 11/19/08 0131 ts Copper ND ug/I 10 E200.8 11/19/08 0131 /ts Iron 129 ug/I 30 E200.8 11/19/08 1928/sml lead ND ug/I 1.0 E200.8 11/19/08 0131 /ts Manganese 45 ug/I 10 E200.8 11/19/08 0131 /ts Mercury ND ug/I 0.50 E200.8 11/19/08 1928/sml Molybdenum ND ug/I 10 E200.8 11/19/08 0131 /ts Nickel ND ug/I 20 E200.8 11/19/08 0131 /ts Selenium 30.2 ug/I 5.0 E200.8 11/19/08 1928/sml Silver ND ug/I 10 E200.8 11/19/08 0131 /ts Thallium ND ug/I 0.50 E200.8 11/19/08 0131 ts Tin ND ug/I 100 E200.8 11/19/08 0131 /ts Uranium 6.29 ug/I 0.30 E200.8 11/19/08 0131 /ts Vanadium ND ug/I 15 E200.8 11/19/08 0131 /ts Zinc ND ug/I 10 E200.8 11/19/08 1928/sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.7 pCi/I E900.1 11/21/08 1434 cgr Gross Alpha minus Rn Precision 0.7 pCi/I E900.1 11/21/08 1434 cgr Gross Alpha minus Rn MDC 1.0 pCi/I E900.1 11/21/08 1434 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 Not detected at minimum detectable concentration EIERGY LABORA TORIES ENERCYLABORA TORIES INC -2393 Salt Creek Hbway 82601 P0 Box 3258 Caspe WV82602 Toll Free 888.235.0515 307235 0515 Faa 307234.1639 casper@energylab.com wivwenergy/ab.com LABORATORY ANALYTICAL REPORT Client Project Lab ID Client Sample ID Denison Mines USA Corp 4th Quarter Groundwater C081 10279-003 MW 30 Report Date lvi 1/08 Collection Date 11/05/08 1352 DateReceived 11/07/08 Matrix Aqueous MCL/ Analyses Result Units Qualifiers RL QCL Method Analysis Date By Report RL Analyte reporting limit Definitions QCL Quality control limit MDC Minimum detectable concentration MCL Maximum contaminant level ND Not detected at the reporting limit DATA QUALITY NC Balance 0.263 Calculation 12/09/08 1744 sdw Anions 25.3 meqlL Calculation 12/09/08 1744 sdw Cations 25.4 meq/L Calculation 12/09/08 1744 sdw Solids Total Dissolved Calculated 1620 mg/L Calculation 12/09/08 1744 sdw TDS Balance 0.80-1.20 0.990 Calculation 12/09/08 1744 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 11/12/08 0120 /jlr Benzene ND ug/L 1.0 SW8260B 11/12/08 0120/jlr Carbon tetrachloride ND ug/L 1.0 SW8260B 11/12/080120 /jIr Chloroform ND ug/L 1.0 SW8260B 11/12/080120/jlr Chioromethane ND ug/L 1.0 SW8260B 11/12/08 0120 /jlr Methyl ethyl ketone ND ug/L 20 SW8260B 11/12/080120 /jlr Methylene chloride ND ug/L 1.0 5W8260B 11/12/08 0120 /jlr Naphthalene ND ug/L 1.0 SW8260B 11/12/080120 jlr Toluene ND ugh 1.0 SW8260B 11/12/080120/jlr Xylenes Total ND ug/L 1.0 SW8260B 11/12/08 0120 /jlr Surr 2-Dichlorobenzene-d4 103 %REC 80-1 20 SW8260B 11/12/080120 jlr Surr Dibromofluoromethane 119 %REC 70-130 8W8260B 11/12/080120 /jlr Surr p-Bromofluorobenzene 91.0 %REC 80-120 SW8260B 11/12/08 0120 ljlr Surr Toluene-d8 95.0 %REC 80-1 20 SW8260B 11/12/080120 /jlr ENERGYLAHORA TORIES INC 2393 Saft Creek Hqbway 82601 RO Box 3258 Caspec WY82602 Toll Free 886235.0515 307235.0515 Fax 307234.1639 casper6energy/ab.com wwwenergy/ab.comEfERGY LAI3OIA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/11/08 1002 Lab ID C081 10568-014 DateReceived 11/14/08 Client Sample ID MW 31 Matrix Aqueous MCL Analyses Result UnIts Qualifier RI QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/I A2320 11/21/08 0102 Iji Bicarbonate as HCO3 205 mg/I A2320 11/21/08 0102 IJI Calcium 180 mg/I 0.5 E200.7 12/29/08 2123/cp Chloride 119 mg/I A4500-CIB 11/21/081357/jal Fluoride 0.3 mg/I 0.1 A4500-F 11/20/08 1458 ljl Magnesium 84.9 mgL 0.5 E200.7 12129/08 2123 cp Nitrogen Ammonia as ND mg/I 0.05 E350.1 11/19/08 1202/eli-b Nitrogen NitrateNitrite as 29.9 rngL 0.05 E353.2 11/20/08 1436/eli-b Potassium 6.2 mg/I 0.5 E200.7 12/29108 2123 cp Sodium 97 mg/I E200.7 12/29/08 2123 cp Sulfate 541 mg/I 30 A4500-504 11/24/08 1347 jal PHYSICAL PROPERTIES pH 7.75 s.u 0.01 A4500-H 11/17/08 1501 /dd Solids Total Dissolved TDS 180 1220 mg/I 10 A2540 11/17/08 1406 /jah METALS DISSOLVED Arsenic ND ugI 5.0 E200.8 11/20/08 0834 sml Beryllium ND ug/I 0.50 E200.8 11/20/08 0834 smi Cadmium ND ug/L 0.50 E200.8 11/20/08 0834 sml Chromium ND ug/I 25 E200.8 11/20/08 0834 smi Cobalt ND ug/I 10 E200.8 11/20/08 0834 smi Copper ND ug/I 10 E200.8 11/20/08 0834 sml Iron ND ug/I 30 E200.8 11/20/08 1746/sml lead ND ug/I 1.0 E200.8 11/20/08 0834/sml Manganese ND ug/I 10 E200.8 11/20/08 0834 sml Mercury ND ug/l 0.50 E200.8 11/20/080834 sml Molybdenum ND ug/l 10 E200.8 11/20/08 0834 sml Nickel ND ug/l 20 E200.8 11/20/080834 sml Selenium 53.8 ugll 5.0 E200.8 11/20/08 0834 sml Silver ND ugI 10 6200.8 11/20/08 1746 sml Thallium ND ug/I 0.50 6200.8 11/20/080834 sml Tin ND ug/l 100 E200.8 11/20/08 0834 sml Uranium 6.35 ug/I 0.30 E200.8 11/20/080834 sml Vanadium ND ug/I 15 6200.8 11/20/080834/sml Zinc ND ug/l 10 E200.8 11/20/080834 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.6 pCi/I E900.1 12/02/08 1834 cgr Gross Alpha minus Rn Precision 0.3 pCi/I E900.1 12/02108 1834 cgr Gross Alpha minus Rn MDC 0.4 pCi/L E900.1 12102/08 1834 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 ENEAC YLABORA TOP/ES INC P2393 Sail Creek Hiqbway 82601 P0 8ox3258 Caspec WV82602 Toil Free 888.2350515 3072350515 Fax 307234.1639 caspeitPenergylab.com www energy/ab corn ENSRGY LAIIORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/11/08 1002 Lab ID C08110568-014 DateReceived 11/14/08 Client Sample ID MW 31 Matrix Aqueous MCI Analyses Result Units Qualifier RL QCL Method Analysis Date By DATA QUALITY NC Balance 0.475 Calculation 12/31/08 1304 sdw Anions 20.1 meq/I Calculation 12/31/08 1304/ sdw Cations 20.3 meq/L Calculation 12/31/08 1304/ sdw Solids Total Dissolved Calculated 1270 mg/L Calculation 1231/08 1304 sdw TDS Balance 0.80-1.20 0.960 Calculation 12/31/08 1304 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 11/17/08 2202 /jlr Benzene ND ug/L 1.0 SW8260B 11/17/08 2202 jlr Carbon tetrachloride ND ugL 1.0 SW8260B 11/17/082202 /jlr Chloroform ND ugL 1.0 SW8260B 11/17/08 2202 /jlr Chloromethane ND ugI 1.0 SW8260B 11/17/082202 jIr Methyl ethyl ketone ND ugh 20 SW8260B 11/17/08 2202 /jlr Methylene chloride ND ugL 1.0 SW8260B 11/17/08 2202 /jlr Naphthalene ND ugh 1.0 SW8260B 11/17/08 2202 jir Toluene ND ug/I 1.0 SW8260B 11/17/08 2202 /jlr Xylenes Total ND ughI 1.0 SW82608 11/17/08 2202 jIr Surr 2-Dichlorobenzene-d4 97.0 %REC 80-1 20 SW8260B 11/17/08 2202 /jlr Surr Dibromofluoromethane 112 %REC 70-130 SW8260B 11/17/082202 jlr Surr p-Bromolluorobenzene 92.0 %REC 80-120 SW8260B 11/17/08 2202 jIr Sum Toluene-d8 100 %REC 80-1 20 SW8260B 11/17/082202 /jlr Report RI Analyte reporting limit MCI Maximum contaminant level Definitions QCL Quality control limit ND Not detected at the reporting limit MDC Minimum detectable concentration EIERGY LASORA TORIES Client Project Lab ID Client Sample ID ENERGYLASORA TORIES INC 2393 Sail CreekHibway 8260 pRO Box 3258 Caspe WV82602 roil flee 888.235 0515 307235 0515 Fax 3072341639 caspenenergy/ab.com www.energylab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corn Report Date 12/11/08 4th Quarter Groundwater Collection Date 11/05/08 1607 C081 10279-005 DateReceived 11/07/08 MW 32 Matrix Aqueous MW Analyses Result Units Qualifiers RI QCI Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 11/12/08 1326 ijI Bicarbonate as HCO3 412 mg/I A2320 11/12/08 1326 Iji Calcium 531 mg/I 0.50 200.8 11/19/082127 smi Chloride 25 mg/I A4500-Cl 11/17/08 1617 jal Fluoride 02 mg/L 0.1 A4500-F 11/10/08 1322 IjI Magnesium 223 mg/I 0.50 200.8 11/19/08 2127 sml Nitrogen Ammonia as 0.86 mg/I 0.05 A4500-NH3 11/13/08 1232 Ijal Nitrogen NltrateNitrite as ND mg/I 0.1 353.2 11/12/08 1051 jal Potassium 14.5 mg/I 0.50 E200.8 11/19/082127/smi Sodium 228 mg/I 0.50 E200.8 11/19/08 2127 sml Sulfate 2450 mg/I 30 A4500-S04 11/18/08 1150 jal PHYSICAL PROPERTIES pH 6.62 s.u 0.01 A4500-H 11/10/08 1338/dd Solids Total Dissolved TDS 180 3820 mg/I 10 A2540 11/10/08 1552 /jah METALS DISSOLVED Arsenic ND ug/L 5.0 200.8 11/19/08 0225/ts Beryllium ND ug/I 0.50 E200.8 11/19/08 0225 ts Cadmium 2.86 ug/I 0.50 200.8 11/19/08 0225 ts Chromium ND ug/I 25 200.8 11/19/08 0225 ts Cobalt 50 ug/L 10 200.8 11/19/08 0225 /ts Copper ND ug/I 10 200.8 11/19/08 0225 ts iron 8770 ug/I 30 E200.8 11/19/08 2127 sml lead ND ug/I 1.0 E200.8 11/19/08 0225 ts Manganese 5390 ug/I 10 200.8 11/19/080225 ts Mercury ND ug/I 0.50 200.8 11/19/082127 sml Molybdenum 11 uy/l 10 E200.8 11/19/08 0225/ts Nickel 66 ug/I 20 E200.8 11/19/08 0225 ts Selenium ND ug/l 5.0 E200.8 11/19/08 2127 sml Silver ND ug/I 10 E200.8 11/19/080225 ts Thallium ND ug/l 0.50 200.8 11/19/080225 ts Tin ND ug/I 100 200.8 11/19/08 0225 ts Uranium 2.55 ug/l 0.30 200.8 11/19/080225 ts Vanadium ND ug/l 15 200.8 11/19/08 0225 ts Zinc 136 ug/l 10 E200.8 11/19/082127/sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 3.7 pCi/I E900.1 11/21/08 1434 cgr Gross Alpha minus Rn Precision 1.0 pCi/I E900.1 11/21/08 1434 cyr Gross Alpha minus Rn MDC 1.0 pCi/I 900.1 11/21/08 1434 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 EISERGY LABORA TORIES Client Project Lab ID Client Sample ID ENERG YLABORA TORIES INC 2393 Sail Creek HI1hWay 82601 EQ Box 3258 Caspei WY 82602 Toll Free 888.235.0515 307.235.0515 Fax 307234.1639 caspercenergyIab.com vwwenergy/ab.coIn LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 12/11/08 4th Quarter Groundwater Collection Date 11/05/08 1607 Coal 10279-005 DateReceived 11/07/08 MW 32 Matrix Aqueous MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By DATA QUALITY NC Balance -2.90 Calculation 12/01/08 1553 sdw Anions 58.4 meq/L Calculation 12/01/08 1553 sdw Cations 55.1 rneq/L Calculation 12/01/08 1553 sdw Solids Total Dissolved Calculated 3790 mg/L Calculation 12/01/08 1553 sdw TDS Balance 0.80-1.20 1.01 Calculation 12/01/08 1553 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 40 5W8260B 11/13/08 2104 wen Benzene ND ug/L 2.0 5W8260B 11/13/08 2104 wen Carbon tetrachloride ND ug/L 2.0 5W8260B 11/13/08 2104 wen Chloroform ND ug/L 2.0 5W8260B 11/13/08 2104/wen Chloromethane ND ug/L 2.0 SW8260B 11/13/082104 wen Methyl ethyl ketone ND ugL 40 5W8260B 11113/08 2104 wen Methylene chloride ND ugL 2.0 5W8260B 11/13/08 2104 wen Naphthalene ND ugL 2.0 SW8260B 11/13/08 2104 wen Toluene ND ug/l 2.0 SW8260B 11/13/082104 wen Xylenes Total ND ugaL 2.0 5W8260B 11/13/082104 wen Sun 2-Dichlorobenzene-d4 102 %REC 80-120 5W8260B 11/13/082104 wen Sun Dibromofluoromethane 105 %REC 70-1 30 5W8260B 11/13/082104 wen Surr p-Bromofluorobenzene 102 %REC 80-120 SW8260B 11/13/082104 wen Sun Toluene-d8 99.0 %REC 80-120 5W8260B 11/13/082104 wen 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 ENERGYLABORA TORIES INC -2393 Sail CreekHiqbway 82601 1W Box 3258 Caspe WV82602 Toll Free 8832350515 307235.0515 Pa 307234.1539 casperenergy/ab.com wwwenergylab.cornEIERGY IjIIIORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/13/08 0740 Lab ID C081 10568-015 DateReceived 11/14/08 Client Sample ID MW 60 Matrix Aqueous MCL Analyses Result Units Qualifier RL QCL Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 11/21/08 0109/IJI Bicarbonate as HCO3 249 mgIL A2320 11/21/08 0109/IjI Calcium 26.4 mgIL 0.5 E200.7 12129/082139 cp Chloride 14 mg/L A4500-Cl 11/21/08 1358 jal Fluoride 0.9 mgL 0.1 A4500-F 11/20/08 1455 IjI Magnesium 34.9 mgIL 0.5 E200.7 12129/08 2139 cp Nitrogen Ammonia as ND mg/L 0.05 E350.1 11/19/08 1155 eli-b Nitrogen NitrateNitrite as 0.08 mg/L 0.05 E353.2 11/20/08 1438 eli-b Potassium 7.0 mg/L 0.5 E200.7 12129/08 2139 cp Sodium 16 mg/L E200.7 12/29/08 2139cp Sulfate mg/L A4500-504 11/24/08 1350 jal PHYSICAL PROPERTIES pH 7.45 s.u 0.01 A4500-H 11/17/08 1503/dd Solids Total Dissolved TDS 180 214 mg/L 10 A2540 11117/08 1406 /jah METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 11/20/08 1806/sml Beryllium ND ug/L 0.50 E200.8 11/20/08 1806 sml Cadmium ND ug/L 0.50 E200.8 11/20/08 1806/sml Chromium ND ug/L 25 E200.8 11/20/08 1806 sml Cobalt ND ug/L 10 E200.8 11/20/08 1806 sml Copper ND ugIL 10 E200.8 11120108 1806sml Iron ND ug/L 30 E200.8 11/20/08 1806 sml Lead ND ug/L 1.0 E200.8 11/20/08 1806/sml Manganese 21 ug/L 10 E200.8 11/20/08 1806/sml Mercury ND ug/L 0.50 E200.8 11/20/08 1806/sml Molybdenum ND ug/L 10 E200.8 11/20/08 1806 smi Nickel ND ug/L 20 E200.8 11/20/08 1806 sml Selenium ND ug/L 5.0 E200.8 11/20/08 1806 sml Silver ND ug/L 10 E200.8 11/20/08 1806 smi Thallium ND ug/L 0.50 E200.8 11/20/08 1806sml Tin ND ug/L 100 E200.8 11/20/08 1806/sml Uranium 0.67 ug/L 0.30 E200.8 11/20/08 1806 sml Vanadium ND ug/L 15 E200.8 11/20/08 1806 /sml Zinc ND ug/L 10 E200.8 11/20/08 1806 sml RADIONUCLIDES DISSOLVED Cross Alpha minus Rn 0.4 pCi/L E900.1 12/02/08 1834/cgr Gross Alpha minus Rn Precision 0.3 pCi/L E900.1 12/02108 1834 cgr Gross Alpha minus Rn MDC 0.4 pCiL E900.1 12/02/08 1834 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 EISERGY LABOR/i TORIES Client Project Lab ID Client Sample ID ENERGYLABORA TORIES INC 2393 Sail Creek Hiqbway 82601 RO Box 3258 Caspec WV82602 To//Free 888.235.0515 307235.0515 Fax 307234.1639 casper@energy/ab.com www.energylab.com LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 12/31/08 4th Quarter Groundwater Collection Date 11/13/08 0740 C081 10568-015 DateRecelved 11/14/08 MW 60 Matrix Aqueous MCLJ Analyses Result Units Qualifier RL QCL Method Analysis Date By DATA QUALITY NC Balance 4.60 Calculation 12/31/08 1305 sdw Anions 4.61 meq/L Calculation 12/31/08 1305 sdw Cations 5.05 meq/L Calculation 12/31/08 1305 sdw Solids Total Dissolved Calculated 242 mg/L Calculation 12/31/08 1305 sdw TDS Balance 0.80 120 0.860 Calculation 12/31/08 1305 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 11/17/06 2240 jlr Benzene ND ugh 1.0 SW8260B 11/17/08 2240 jlr Carbon tetrachloride ND ugh 1.0 5W8260B 11/17/08 2240 /jlr Chloroform 13 ug/L 1.0 SW8260B 11/17/082240/JIr Chloromethane ND ug/L 1.0 5W82608 11/17/08 2240 jir Methyl ethyl ketone ND ug/L 20 SW8260B 11/17/08 2240 /jir Methylene chloride ND ug/L 1.0 5W8260B 11/17/08 2240 /jlr Naphthalene ND ugh 1.0 5W82608 11/17/082240 /jlr Toluene ND ughL 1.0 5W8260B 11/17/08 2240 jir Xylenes Total ND ug/L 1.0 SW8260B 11/17/08 2240 fir Sun 2-Dichlorobenzene-d4 103 %REC 80-120 SW8260B 11/17/08 2240 fir Sum Dibromofluoromethane 108 %REC 70-130 5W8260B 11/17/082240 fir Sum p-Bromofiuorobenzene 94.0 %REC 80-120 SW8260B 11/17/08 2240 jir Sum Toluene-d8 94.0 %REC 80-120 SW82608 11/17/082240 /jlr 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 ENERG YLABORA TORIES INC 2393 Salt Creek Hibway 52601 P0 Box 3258 Casper WY82502 Toll Free 888.235.0515 3072350515 Fax 307.234.1639 casperenergy/ab.com wwwenergylab.comEISERGY LABORATORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/11/08 Project 4th Quarter Groundwater CollectIon Date 11/05108 1607 Lab ID Goal 10279-006 DateReceived 11/07/08 Client Sample ID MW 65 Matrix Aqueous MCLJ Analyses Result Units Qualifiers RI QCI Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/I A2320 11/12/08 1333/ Bicarbonate as HCO3 410 mg/L A2320 11/12/08 1333 IjI Calcium 528 mg/I 0.50 E200.8 11/19/08 2133 smi Chloride 25 mg/I A4500-Cl 11/17/08 1619/ial Fluoride 0.2 mg/I 0.1 A4500-F 11/10/08 1325 IjI Magnesium 224 mg/L 0.50 E200.8 11/19/08 2133 sml Nitrogen Ammonia as 0.83 mgL 0.05 A4500-NH3 11/13/08 1234 /jal Nitrogen NitrateNitrite as ND mg/L 0.1 E353.2 11/12/08 1054 jal Potassium 14.4 mg/I 0.50 E200.8 11/19/08 2133 sml Sodium 226 mg/I 0.50 E200.8 11/19/08 2133 sml Sulfate 2460 mg/L 30 A4500-S04 11/18/08 1152 /jal PHYSICAL PROPERTIES pH 6.60 s.u 0.01 A4500-H 11/10/08 1341 /dd Solids Total Dissolved TDS 180 3790 mg/I 10 A2540 11/10/08 1552 jah METALS DISSOLVED Arsenic ND ug/I 5.0 E200.8 11/19/08 0232 /ts Beryllium ND ug/I 0.50 E200.8 11/19/080232 ts Cadmium 2.67 ug/L 0.50 E200.8 11/19/08 2133 sml Chromium ND ug/I 25 E200.8 11/19/08 0232 ts Cobalt 50 ug/L 10 E200.8 11/19/08 0232/ts Copper ND ug/L 10 E200.8 11/19/08 0232 ts Iron 8790 ug/I 30 E200.8 11/19/08 2133 smi Lead ND ug/L 1.0 E200.8 11/19/08 0232 ts Manganese 5470 ug/I 10 E200.8 11/19/08 0232 ts Mercury ND ug/I 0.50 E200.8 11/19/08 2133/sml Molybdenum 11 ug/I 10 E200.8 11/19/08 0232 ts Nickel 66 ug/I 20 E200.8 11/19/08 0232 ts Selenium ND ug/I 5.0 E200.8 1119/082133/sml Silver ND ug/I 10 E200.8 11/19/080232 ts Thallium ND ug/I 0.50 E200.8 11/19/080232 ts Tin ND ug/I 100 E200.8 11/19/08 0232/ts Uranium 2.72 ug/I 0.30 E200.8 11/19/08 0232 ts Vanadium ND ug/L 15 E200.8 11/19/080232/ts Zinc 136 ug/I 10 E200.8 11/19/08 2133 sml RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 4.4 pCi/L E900.1 11/21/08 1434 cgr Gross Alpha minus Rn Precision 1.1 pCi/I E900.1 11/21/08 1434/cgr Gross Alpha minus Rn MDC 1.0 pCi/I E900.1 11/21/08 1434/cgr Report RL Analyte reporting limit MCI Maximum contaminant level DefinItions DCI 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 Hhway 82601 P0 Box 3258 Caspe WY82602 To//Free 888.2350515 307235.0515 Fax 307234.1539 caspereI7ergyIab.com wwwenergy/ab.conEIERGV LASORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12111/08 Project 4th Quarter Groundwater Collection Date 11/05/08 1607 Lab ID C081 10279-006 DateRecelved 11/07/08 Client Sample ID MW 65 Matrix Aqueous MCLJ Analyses Result Units Qualifiers RL QCL Method Analysis Date By DATA QUALITY NC Balance -3.26 Calculation 12/01/08 1553 sdw Anions 58.7 meq/L Calculation 12/01/08 1553 sdw Cations 55.0 meq/L Calculation 12/01/08 1553 sdw Solids Total Dissolved Calculated 3800 mg/L Calculation 12/01/08 1553 sdw TDS Balance 0.80-1.20 1.00 Calculation 12/01/08 1553 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 40 SW8260B 11/13/082144 wen Benzene ND ug/L 2.0 SW8260B 11/13/082144 wen Carbon tetrachloride ND ug/L 2.0 SW8260B 11/13/08 2144 wen Chloroform ND ug/L 2.0 8W8260B 11/13/08 2144 wen Chloromethane ND ugh 2.0 SW8260B 11/13/082144 wen Methyl ethyl ketone ND ug/L 40 SW8260B 11/13/082144 wen Methylene chloride ND ug/L 2.0 SW8260B 11/13/082144 wen Naphthalene ND ugh 2.0 SW8260B 11/13/082144/wen Toluene ND ug/L 2.0 SW8260B 11/13/082144/wen Xylenes Total ND ug/L 2.0 SW8260B 11/13/08 2144 wen Surr 2-Dichlorobenzene-d4 102 %REC 80-120 5W8260B 11/13/082144 wen Surr Dibromofluoromethane 105 %REC 70-130 SWB26OB 11/13/0821441 wen Sun p-Bromofluorobenzene 102 %REC 80-120 SW8260B 11/13/08 2144 wen Sum Toluene-d8 99.0 %REC 80-1 20 5W8260B 11/13/08 2144 wen 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 LARORA TORIES Client Project Lab ID Client Sample ID ENERG YLABORA TORIES INC 2393 Sail Creek Hihway 82801 RO Box 3258 Caspe WV82502 roll Free 888235.0515 307235.0515 Fax 307234.1539 casperenerqy/ab.com www energy/at corn LABORATORY ANALYTICAL REPORT Denison Mines USA Corp Report Date 12/31/08 4th Quarter Groundwater Collection Date 11/12/08 1147 COOl 10568-016 DateReceived 11/14/08 MW 70 Matrix Aqueous MCI Analyses Result Units Qualifier RI QCI Method Analysis Date By MAJOR IONS Carbonate as C03 ND mg/L A2320 11/21/08 0116 iji Bicarbonate as HCO3 483 mg/I A2320 11/21108 0116 lji Calcium 373 mg/L 0.5 E200.7 12/29/08 2143 cp Chloride 33 mg/L A4500-CI 11/21/08 1400/jal Fluoride 0.3 mg/I 0.1 A4500-FC 11120108 1501 /ijl Magnesium 183 mg/L 0.5 E200.7 12/29/08 2143 cp Nitrogen Ammonia as ND mg/I 0.05 E350 11/19/08 1225 eli-b Nitrogen NitrateNitrite as 0.70 mg/I 0.05 E353.2 11/20/08 1426 eli-b Potassium 12.6 mg/I 0.5 E200.7 12/29/082143 cp Sodium 646 mg/L E200.7 12/29/08 2143 cp Sulfate 2540 mg/L 30 A4500-S04 11/24/08 1354 /jal PHYSICAL PROPERTIES pH 7.43 s.u 0.01 A4500-HB 11/17/08 1505/dd Solids Total Dissolved TDS 180 4030 mg/I 10 A2540 11/17/08 1406 /jah METALS DISSOLVED Arsenic ND ug/L 5.0 E200.8 11/20/08 1812/sml Beryllium ND ug/I 0.50 E200.8 11/20/08 1812/sml Cadmium 0.51 ug/I 0.50 E200.8 11/20/08 1812/sml Chromium ND ug/I 25 E200.8 11/20/08 1812/sml Cobalt ND ug/L 10 E200.8 11/20/08 1812/sml Copper ND ug/I 10 E200.8 11/20/08 1812/sml Iron 56 ug/I 30 E200.8 11/20/08 1812/sml Lead ND ug/I 1.0 E200.8 11/20/08 1812/sml Manganese 94 ug/L 10 E200.8 11/20/08 1812/sml Mercury ND ug/L 0.64 E200.8 11/20/08 1812/smi Molybdenum ND ug/L 10 E200.8 11/20/08 1812/sml Nickel ND ug/L 20 E200.8 11/20/08 1812 sml Selenium 8.1 ug/L 6.2 E200.8 11/20/08 1812/sml Silver ND ug/L 10 E200.8 11/20/08 1812/sml Thallium 0.68 ug/L 0.50 E200.8 11/20/08 1812 sml Tin ND ug/L 100 E200.8 11/20/08 1812/sml Uranium 26.5 ug/I 0.30 E200.8 11/20/08 1812 sml Vanadium ND ug/I 15 E200.8 11/20/08 1812/sml Zinc 33 ug/I 11 E200.8 11/20/08 1812 smi RADIONUCLIDES DISSOLVED Gross Alpha minus Rn 0.3 pCi/I E900.1 12/02/082024 cgr Gross Alpha minus Rn Precision 0.3 pCi/I E900.1 12/02/08 2024 cgr Gross Alpha minus Rn MDC 0.4 pCi/I E900.1 12/02/08 2024 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 Not detected at minimum detectable concentration ENERO YLASORA TORIES INC 2393 Sail CreekHiqbway 82601 RO Box3258 Casper WY82602 Thilftee 8882350515 307235.0515 Fax 307234.1639 casperenergyIab.coni www.energylab.comEtsERGY LALOfA JJ/ES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 1/12/08 1147 Lab ID C08110568M16 DateRecelved 11/14/08 Client Sample ID MW 70 Matrix Aqueous MCL/ Analyses Result Units Qualifier RL QCL Method Analysis Date By DATA QUALITY A/C Balance 0.280 Calculation 12/31/08 1308/ sdw Anions 61.7 meg/I Calculation 12/31/08 1308/sdw Cations 62.0 meq/L Calculation 12/31/08 1308 sdw Solids Total Dissolved Calculated 4040 mg/L Calculation 12/31/08 1308 sdw TDS Balance 0.80-1.20 1.00 Calculation 12/31/08 13081 sdw VOLATILE ORGANIC COMPOUNDS Acetone ND ug/t 20 SW8260B 11/17/08 2318 jir Benzene ND ug/L 1.0 SW8260B 11/17/08 2318 /jlr Carbon tetrachioride ND ug/L 1.0 SW8260B 11/17/08 2318 fir Chloroform ND ug/L 1.0 SW8260B 11/17/08 2318 /jlr Chioromethane ND ug/L 1.0 SW8260B 11/17/082318/jlr Methyl ethyl ketone ND ug/L 20 SW8260B 11/17/082318 /jlr Methylene chloride ND ug/L 1.0 5W8260B 11/17/082318 jir Naphthalene ND ug/L 1.0 5W8260B 11/17/08 2318 jir Toluene ND ugh 1.0 SW8260B 11/17/082318/jIr Xylenes Total ND ug/L 1.0 SW8260B 11/17/082318 /jlr Sum 2-Dichlorobenzene-d4 104 %REC 80-120 SW8260B 11/17/08 2318 /jlr Sum Dibromofluoromethane 116 %REC 70-130 5W8260B 11/17/08 2318 jlr Sum p-Bromofluorobenzene 98.0 %REC 80-120 5W8260B 11/17/08 2318 fir Sum Toluene-d8 99.0 %REC 80-120 5W8260B 11/17/082318 jir 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 ENERGYLASORA TORIES INC P2393 Sail CreekHjqbway 8260 RU Box 3258 Caspe WV82802 Toll Free 888.235.0515 307235.0515 Fax 307234.1539 caspenllenergy/ab.com www energylab cornEtERCY LA//CPA TOP/Es LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/08/06 Project 4th Quarter Groundwater Collection Date 11/04/08 1632 Lab ID C08110216007 DateReceived 11/06/08 Client Sample ID Trip Blank Matrix Aqueous MCL/ Analyses Result Units Qualifiers RL QCL Method AnalysIs Date By VOLATILE ORGANIC COMPOUNDS Acetone ND ugh 20 SW8260B 11/11/08 1512/pr Benzene ND ug/L 1.0 SW8260B 11/11/08 1512/jlr Carbon tetrachloride ND ug/L 1.0 SW8260B 11/11/08 1512 /jIr Chloroform ND ug/L 1.0 SW8250B 11/11/08 1512 /jlr Chloromethane ND ugh 1.0 SW82608 11/11/08 1512/jlr Methyl ethyl ketone ND ug/L 20 SW8260B 11/11/08 1512 /jlr Methylene chloride ND ug/L 1.0 5W8260B 11/11/08 1512 /jIr Naphthalene ND ug/L 1.0 SW8260B 11/11/08 1512/jlr Toluene ND ug/L 1.0 SW8260B 11/11/08 1512/jir Xylenes Total ND ug/L 1.0 3W8260B 11/11/08 1512 /jlr Sum 2-Dlchlorobenzene-d4 101 %REC 80-1 20 SW8260B 11/11/08 1512 jlr Surr Dibromofluorometltane 103 %REC 70-130 SW8260B 11/11/08 1512 jlr Surr p-Bromofluorobenzene 90.0 %REC 80-120 SW8260B 11/11/08 1512 /jlr Surr Toluene-d8 90.0 %REC 80-120 SW8260B 11/11/08 1512/pr 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 ENERGYLABORA TORIES INC -2393 Se/I Creek Hhway 82601 -RU Box 3258-Caspe1c WY82602 Toil Free 888.235 0515 307235.0515 Far 307234.1639 casperenergy/ab.corn vww energyleA cornENSRGY LARORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date lvi 1/08 Project 4th Quarter Groundwater Collection Date 11/05/08 1740 Lab ID C081 10279-007 DateRecelved 11/07/08 Client Sample ID Trip Blank Matrix Aqueous MCI Analyses Result Units Qualifiers RI QCL Method Analysis Date By VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 11/13/082223 wen Benzene ND ug/I 1.0 SW8260B 11/13/082223 wen Carbon tetrachloride ND ug/I 1.0 SW8260B 11/13/08 2223 wen Chloroform ND ug/L 1.0 SW8260B 11/13/08 2223 wen Chioromethane ND ug/L 1.0 SW8260B 11/13/08 2223/wen Methyl ethyl ketone ND ug/L 20 SW8260B 11/13/082223 wen Methylene chloride ND ug/L 1.0 SW8260B 11/13/082223 wen Naphthalene ND ug/L 1.0 SW8260B 11/13/082223 wen Toluene ND ug/L 1.0 SW8260B 11/13/08 2223 wen Xylenes Total ND ug/L 1.0 SW8260B 11/13/08 2223 wen Surr 2-Dichlorobenzene-d4 104 %REC 80-120 SW82608 11/13/08 2223 wen Surr Dibromofluoromethane 115 %REC 70-130 SW8260B 11/13/082223 wen Sum p-Bromofluorobenzene 106 %REC 80-1 20 SW8260B 11/13/08 2223 wen Sum Toluene-d8 99.0 %REC 80-120 SW8260B 11/13/082223 wen 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 ENERGYLASORA TORIES INC 2393 Sail Creek Hiqhway 82601 P0 Sax 3258 Caspe4 WV82602 Toll Free 888.235.0515 3072350515 Fax 307234.1639 caspenllenergy/ab.com www.energylab.com EIERCY LARORA TORIES LABORATORY ANALYTICAL REPORT Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Collection Date 11/13/08 0834 Lab ID C08110568017 DateReceived 11/14/08 Client Sample ID Trip Blank Matrix Aqueous MCLI Analyses Result units Qualifier RL QCL Method Analysis Date By VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 11/19/08 1712/jir Benzene ND ugIL 1.0 8W8260B 11/19/08 1712 jlr Carbon tetrachloride ND ug/L 1.0 SW8260B 11/19/08 1712 jlr Chloroform ND ug/L 1.0 SW8260B 11/19/08 1712 /jlr Chioromethane ND ug/L 1.0 SW82605 11/19/08 1712/pr Methyl ethyl ketone ND ug/L 20 SW8260B 11/19/08 1712 IjIr Methylene chloride ND ug/L 1.0 SW8260B 11/19/08 1712 /Jlr Naphthalene ND ug/L 1.0 SW8260B 11/19/08 1712 /jIr Toluene ND ug/L 1.0 SW8260B 11/19/08 1712 jIr Xylenes Total ND ug/L 1.0 SW8260B 11/19/08 1712 /jlr Surr 12-Dichlorobenzene-d4 103 %REC 80-120 8W8260B 11/19/08 1712 jir Surr Dibromofluoromethane 111 %REC 70-130 SW8260B 11/19/08 1712 /jlr Surr p-BromofiuorobenzenŁ 101 %REC 80-1 20 SW8260B 11/19/08 1712 /jlr Surr Toluene-d8 99.0 %REC 80-120 8W8260B 11/19/08 1712/jlr 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 ENERGYLABORA TORIES INC 2393 Sail Creek Hiqliway 8260 P0 Box 3258 Caspei PVY82602 ___________To/I Free 888.235 0515 307235.0515 Fax 307234.1639 casperenergyIaL7.com wwwenergylab.com A/IC/lA 70//IFS ANALYTICAL SUMMARY REPORT December 06 2008 Denison Mines USA Corp 6425 Hwy 191 Blanding UT 84511 Workorder No COSI 10216 Quote ID C1640 POC Wells Monthly Groundwater Sampling Project Name 4th Quarter Groundwater Energy Laboratories Inc received the following samples for Denison Mines USA Corn on 11/6/2008 for analysis Sample ID Client Sample ID Collect Date Receive Date Matrix Test C08110216-001 MW3 11/03/08 0858 11/06/08 Aqueous Metals by ICP/ICPMS Dissolved Alkalinity QA Calculations Chloride Fluoride Nitrogen Ammonia Nitrogen Nitrate Nitrite pH Gross Alpha minus Rn222 and Uranium Solids Total Dissolved Sulfate 5W8260B VOCs Standard List C081 10216-002 MW 3A 11/03/08 0945 11/06/08 Aqueous Same As Above C081 10216-003 MW 11/04/08 1411 11/06/08 Aqueous Same As Above C081 10216-004 MW 18 11/04/08 1202 11/06/08 Aqueous Same As Above C081 10216-005 MW 19 11/04/08 0937 11/06/08 Aqueous Same As Above C081 10216-006 MW 27 11/04/08 1632 11/06/08 Aqueous Same As Above C081 10216-007 Trip Blank 11/04/08 1632 11/06/08 Aqueous 5W8260B VOCs Standard Ust 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 tJkAJM.Q Summary Report Page of ENERG VLABOR14 TORIES INC 2393 Sail Creek Hiqhw Toll Free 889235.0515 307235.0515 Fax 307.234.1639 ay 82601 P0 Box 3258 CaspeAc WY82602 caspefl4eaergy/ab.com www.energylab.com QA/QC Summary Report Client Denison Mines USA Corp Project 4th Quarter Groundwater Report Date 2/06/08 Work Order C081 10216 Result Units RL %REC Low Limit High Limit RPD RPDLimit Quai Method A2320 Batch RI 10678 Sample ID MBLK Method Blank Alkalinity Total as CaCO3 ND mg/L 0.2 Carbonate as C03 ND mg/L Bicarbonate as FICO3 ND mgIL Run MANThCI-L081 lOB 11/10/08 2208 Sample ID LCS Laboratory Control Sample Alkalinity Total as CaCO3 197 mg/L 1.0 Run MANTECI 0811108 11/10/08 2216 98 90 110 Sample ID C08110216-OO5AMS Sample Matrix Spike Alkalinity Total as CaCO3 344 mg/I 1.0 Run MANTECH_081110B 11/11/08 0029 101 80 120 Sample ID C08110216-OO5AMSD Sample Matrix Spike Duplicate Alkalinity Total as CaCO3 345 mg/L 1.0 Run MANTECH_081 lOB 11/11/08 0036 102 80 120 0.3 20 Method A2540 Batch 081 107_1_SLDS-TDS-W Sample ID MBLKI_081107 Method Blank Solids Total Dissolved TDS 180 ND mg/L Run BAL-1_081 1078 11/07/08 0924 Sample ID LCSI_081107 Laboratory Control Sample Solids Total Dissolved TDS 180 1030 mgiL 10 Run BAL-1_081107B 11/07/080924 103 90 110 Sample ID C08110216-OOBAMS Sample Matrix Spike Solids Totai Dissolved TDS 180 3130 mg/L 10 Run BAL-1_081 107B 11/07108 0940 102 90 110 Sample ID C08110216-OO6AMSD Sample Matrix Spike Duplicate Solids Totai Dissolved TDS@ 180C 3150 mg/L 10 Run BAL-1_081 1078 11/07/08 0940 103 90 110 0.6 10 Method A4500-Cl Batch 0811 17A-CL-1TR-W Sample ID MBLK9-081117A Method Blank Chloride ND mg/L 0.4 Run TITRATION_081117A 11/17/08 1305 Sample ID C08110216-OO5AMS Sample Matrix Spike Chloride 141 mg/L 1.0 Run TITRATION_081117A 11/17/08 1502 98 90 110 Sample ID C08110216-OQSAMSD Sample Matrix Spike Duplicate Chloride 141 mg/L 1.0 Run TITRATION.S81 117A 11/17/08 1503 98 90 110 10 Sample ID LCS3S-0811 17A Laboratory Control Sample Chloride 3490 mg/L 1.0 Run TITRATION_081 11 7A 11/17/08 1613 99 90 110 Qualifiers RL Analyte reporting limit EISERGY LA/3ORA TORIES ND Not detected at the reporting limit LASORA TORIES ENERGYLASORA TORIES INC -2393 SaIl CreekHjqhway 82601 -P0 Sax 3258 Caspac WY82602J7TallFree 888.235.0515 3072350515 Fax 307234.1539 caspenPenergylab.com www.energylab.com QAJQC Summary Report Client Denison Mines USA Corp Project 4th Quarter Groundwater Report Date 12/06/08 Woric Order C081 10216 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLIm1t QuaJ Method A4500-F Batch Ri 10676 Sample ID MBLK-1 Fluoride Method Blank ND mg/L 0.05 Run MANTECH_081 bA 11/10/08 1057 Sample ID LCS-1 Fluoride Laboratory Control Sample 1.00 mg/L 0.10 100 Run MANTECH_081 11 OA 11/10/08 1100 90 110 Sample ID C08110210-OOIAMS Fluoride Sample Matrix Spike 1.82 mg/L 0.10 106 Run MANTECH_081110A 11/10/08 1128 80 120 Sample ID C08110210-OOIAMSD Fluoride Sample Matrix Spike Duplicate 1.78 mg/L 0.10 102 Run MANTECH_081 1OA 11/10/08 1131 80 120 2.2 10 Method A4500-H Analytical Run ORION555A_081 07A Sample ID 1CVI_081107j pH initial Calibration Verification Standard 6.87 s.u 0.010 100 11/07/08 0902 98 102 Method A4500-H Batch 0811 07_1_PH-W_555A-1 Sample ID C08110216-OOBADUP pH Sample Ouplicate 7.56 s.u 0.010 Run 0R10N555A_081107A 11/07/08 1011 10 Method A4500-504 Batch O811 18j_SO4-TURB-W Sample ID LCS-1_081 118 Sulfate Laboratory Control Sample 4790 mg/L 59 100 Run TURB-2_081 11 8A 11/18/08 1023 90 110 Sample ID MBLK-1_081118 Sulfate Method Blank ND mg/L 0.6 Run TURB-2_081118A 11/18/08 1023 Sample ID C08110206-OOICMS Sulfate Sample Matrix Spike 27.3 mg/L 1.0 103 Run TURB-2_081118A 11/18/08 1108 90 110 Sample ID C68110206-OOICMSD Sulfate Sample Matrix Spike Duplicate 27.3 mg/L 1.0 103 Run TURB-2_081118A 11/18/08 1110 90 110 10 Qualifiers RL Anaiyte reporting limit ND-Not detected at the reporting limit ENERGYLAHORA TORIES INC 2393 Sal/Creek Hqkway 82601 Pa Box 3258 Caspei WY82602 Toll Free 886235.0515 307235.0515 Fa 307234.1639 caspenllenergy/ab.com www.energylab.com LABORA TORIES QA/UC summary Report Client Denison Mines USA Corp Report Date 12/06/08 Project 4th Quarter Groundwater Work Order C081 10216 Analyte Result Units RL %REC Low Limit High Limit RPD RPDL1mit Qual Method E200.7 Batch RI 11575 Sample ID MB-081126A Method Blank Run ICP2-C_081 126A 11/26/08 1432 Calcium ND mg/I 0.1 Iron ND mg/I 0.005 Magnesium ND mg/L 0.04 Potassium ND mg/I 0.02 Sodium ND mg/I 0.8 Sample ID LFB-081126A Laboratory Fortified Blank Run ICP2-C_081 126A 11/26/08 1436 Calcium 51.8 mgIL 0.50 104 85 125 iron 1.03 mg/I 0.030 103 85 125 Magnesium 52.5 mg/I 0.50 105 85 125 Potassium 45.8 mg/L 0.50 92 85 125 Sodium 49.9 mg/I 0.77 100 85 125 Sample ID C08110216-OOIBMS2 Sample Matrix Spike Run ICP2-C.081 126A 11/26/08 1654 Calcium 993 mg/L 1.1 102 70 130 Iron 10.1 mg/I 0.047 101 70 130 Magnesium 758 mg/L 1.0 102 70 130 Potassium 486 mg/I 1.0 93 70 130 Sodium 1330 mg/I 7.7 99 70 130 Sample ID C08110216-OOIBMSD2 Sample Matrix Spike Duplicate Run ICP2-C_081 126A 11/26/08 1658 Calcium 955 mg/I 1.1 94 70 130 20 Iron 9.70 mg/L 0.047 97 70 130 4.2 20 Magnesium 738 mg/I 1.0 98 70 130 2.6 20 Potassium 484 mg/L 1.0 92 70 130 0.4 20 Sodium 1320 mg/I 7.7 98 70 130 0.7 20 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit ENERGYLABORA TORIES INC 2393 Sail Creek Higbway 82801 Ro Sax 3258 Caspe1c WY82802 Tall Free 889235.0515 307235.0515 Fa 307.234.1539 casperenergyIaA corn www energy/at corn LA/3O/A TOP/Es U.AIUC summary Report Client Denison Mines USA Corn Report Date 12/06/08 Project 4th Quarter Groundwater Work Order C081 10216 Sample ID LRB Arsenic Cadmium Cobalt Copper Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Zinc Sample ID LFB Arsenic Cadmium Cobalt Copper Lead Manganese Mercury Molybdenum Nickel Selenium Silver Thallium Tin Uranium Zinc Method Blank ND mg/L 3E-06 mg/I 3E-05 mg/I ND mg/I 6E-06 mg/I 0.0467 mg/I 0.0519 mg/L Sample ID C08110216-0058M54 Sample Matrix SpIke Arsenic 0.0515 mg/I Cadmium 0.0477 mg/L Cobalt 0.0468 mg/I Copper 0.0440 mg/I Lead 0.0485 mg/I Manganese 0.0465 mg/I 4E-05 3E-06 5E-06 3E-05 3E-06 Run ICPMS4-C_081 14A 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 Analyte Result Units RL %REC Low LimIt High LImIt RPD RPDLimIt Qual Method E200.8 Batch Ri 10981 Run ICPMS4-C_081 14A 3E-05 4E-05 ND 3E-05 ND 4E-05 IE-05 0.0001 ND mg/L mg/I mg/L mg/L mg/L mg/L mg/L mg/L mg/L 0.0002 mg/L Laboratory Fortified Blank 0.0481 mg/L 0.0470 mg/I 0.0478 mg/L 0.0497 mg/L 0.0469 mg/L 0.0479 mg/I 0.00477 mg/L 0.0467 mg/L 0.0496 mg/I 0.0471 mg/L 0.0181 mg/L 0.0469 mg/L 0.0459 mg/L 11/14/08 2146 11/14/08 2153 11/15/08 1037 6E-06 E-05 9E-06 3E-05 0.0001 7E-06 4E-06 8E-06 2E-06 3E-05 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 0.010 0.010 0.010 0.050 0.010 0.0010 0.10 0.050 96 94 96 99 94 96 95 93 99 94 90 94 91 93 103 Mercury Molybdenum Nickel Qualifiers 0.00467 mg/I 0.0504 mg/L 0.0454 mg/L Run ICPMS4-C_081 14A 101 70 130 95 70 130 92 70 130 88 70 130 97 70 130 93 70 130 93 70 130 93 70 130 87 70 130 RL Analyte reporting limit ND Not detected at the reporting limit ENEAG YLABORA TORIES INC 2393 Sail Creek Hqfl way 8260 P0 Box 3258 Casper WY82602 Toll Free 886235.0515 307235.0515 FaK 307234.1539 caspenWenergyfab.cam www.energylab.comENERGY L/4130RA roR/Es QAIQC Summary Report Client Denison Mines USA Corp Report Date 12/06/08 Project 4th Quarter Groundwater Work Order COOl 10216 Analyte Result Units RI %REC Low Limit High Limit RPD RPDIimIt Qual Method E200.8 Batch RI 10981 Sample ID C081 10216.0058MS4 Sample Matrix Spike Run ICPMS4-C_081 14A 11/15/08 1037 Selenium 0.0635 mg/L 0.0010 107 70 130 Silver 0.0142 mg/L 0.010 71 70 130 Thallium 0.0483 mg/L 0.10 96 70 130 Tin 0.0382 mg/I 0.10 76 70 130 Uranium 0.0566 mg/L 0.00030 100 70 130 Zinc 0.0524 mg/I 0.010 99 70 130 Sample ID C081 10216-OO5BMSD4 Sample Matrix Spike Duplicate Run ICPMS4-C_081 14A 11/15/08 1044 Arsenic 0.0518 mg/L 0.0010 101 70 130 0.6 20 Cadmium 0.0477 mg/L 0.010 95 70 130 20 Cobalt 0.0469 mg/L 0.010 92 70 130 0.3 20 Copper 0.0447 mg/L 0.010 89 70 130 1.5 20 Lead 0.0486 mg/I 0.050 97 70 130 20 Manganese 0.0468 mg/I 0.010 94 70 130 0.8 20 Mercury 0.00474 mg/I 0.0010 95 70 130 1.6 20 Molybdenum 0.0505 mg/I 0.10 94 70 130 20 Nickel 0.0454 mg/I 0.050 87 70 130 20 Selenium 0.0652 mg/I 0.0010 111 70 130 2.5 20 Silver 0.0147 mg/I 0.010 73 70 130 3.5 20 Thallium 0.0485 mg/I 0.10 96 70 130 20 Tin 0.0398 mg/I 0.10 80 70 130 20 Uranium 0.0569 mg/I 0.00030 101 70 130 0.5 20 Zinc 0.0515 mg/I 0.010 97 70 130 1.8 20 Qualifiers RI Analyte reporting limit ND Not detected at the reporting limit ENERG YLABORA TORIES INC 2393 Sail Creek Hqbway 82501 AC Box 3258 Caspe PVV82602 ____________To/I Free 885235.0515 307235.0515 Fax 307234.1639 casper4energy/ab.com wwweneqy/ab.com LASORA TORIES UAIQG summary Report Client Denison Mines USA Corp Report Date 12/06/08 Project 4th Quarter Groundwater Work Order C081 10216 Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method E200.8 Batch Ri 11088 Sample ID LRB Method Blank Run ICPMS2-C_081118A 11/18/08 1238 Beryllium ND mg/I 3E-05 Chromium ND mg/I 4E-05 Vanadium ND mg/I 3E-05 Sample ID IFB Laboratory Fortified Blank Run ICPMS2-C_081 11 BA 11/18108 1245 Beryllium 0.0526 mg/I 0.0010 105 85 115 Chromium 0.0531 mg/I 0.0010 106 85 115 Vanadium 0.0525 mg/I 0.0010 105 85 115 Sample ID C081 1021 6-003BM54 Sample Matrix Spike Run ICPMS2-C_081 18A 11/18/08 2214 Beryllium 0.0465 mg/I 0.010 93 70 130 Chromium 0.0468 mg/I 0.050 94 70 130 Vanadium 0.0479 mgIL 0.10 96 70 130 Sample ID C08110216-0035M5D4 Sample Matrix Spike Duplicate Run ICPMS2-C_081 18A 11/18/082220 Beryllium 0.0452 mg/I 0.010 90 70 130 2.9 20 Chromium 0.0455 mg/I 0.050 91 70 130 20 Vanadium 0.0473 mg/I 0.10 94 70 130 20 Method E200.8 Batch Ri 11247 Sample ID LRB Method Blank Run ICPMS4-C_081119B 11/19/08 1338 Chromium ND mg/L 4E-05 Vanadium ND mg/I 3E-05 Sample ID LFB Laboratory FortIfied Blank Run ICPMS4-C_081 11 9B 11/19/08 1508 Chromium 0.0504 mg/I 0.0010 101 85 115 Vanadium 0.0503 mg/I 0.0010 101 85 115 Sample ID C08110232-OO2BMS4 Sample Matrix Spike Run ICPMS4-C_081 11 9B 11/19/08 1751 Chromium 0.0469 mg/I 0.050 94 70 130 Vanadium 0.0479 mg/I 0.10 94 70 130 Sample ID C08110232-OO2BMSD4 Sample Matrix Spike Duplicate Run ICPMS4-C_081 Ii 9B 11/19/08 1757 Chromium 0.0472 mg/I 0.050 94 70 130 20 Vanadium 0.0479 mg/I 0.10 94 70 130 20 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit ENERO YLASORA TORIES INC 2393 Sail Creekfliqbway 82601 P0 Box 3258 Caspei WY82602 Toil Free 888.235.0515 307235 0515 Fw 307234.1639 casperenergyIab.com www.energylab.com QAIQC Summary Report Client Denison Mines USA Corp Report Date 12106/08 Project 4th Quarter Groundwater Work Order C081 10216 Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method E200.8 Batch Ri 11308 Sample ID LRB Method Blank Run ICPMS4-C_081120A 11/20/08 1324 Beryllium ND mg/L 4E-06 Sample ID LFB Laboratory Fortified Blank Run ICPMS4-C_081 120A 11/20108 133 Beryllium 0.0506 mg/I 0.0010 101 85 115 Sample ID C08110568-004BM54 Sample Matrix Spike Run ICPMS4-C_081 i2OA i/20/08 1539 Beryllium 0.0474 mg/I 0.010 95 70 130 Sample ID C081 10568-OO4BMSD4 Sample Matrix Spike Duplicate Run 1CPMS4-C_08i 120A 11/20/08 1546 Beryllium 0.0466 mg/L 0.010 93 70 130 1.7 20 Method 9350.1 Batch B_R120737 Sample ID MBLK Method Blank Run SUB-B120737 11/13/08 0954 Nitrogen Ammonia as ND mg/I 0.02 Sample ID LFB Laboratory Fortified Blank Run SUB-B120737 11/13/08 0955 Nitrogen Ammonia as 0.995 mg/I 0.10 101 90 110 Sample ID B08110794-OOIGMS Sample Matrix Spike Run SIJB-B120737 11/13/08 1034 Nitrogen Ammonia as 0.981 mg/I 0.10 94 90 110 Sample ID B08110794-OOIGMSD Sample Matrix Spike Duplicate Run SUB-Bi20737 11/13/08 1035 Nitrogen Ammonia as 0.983 mg/I 0.10 94 90 110 0.2 10 Method 9353.2 Batch B_R120661 Sample ID MBIK Method Blank Run SUB-B120661 11/12/080854 Nitrogen NitrateNitrite as 0.004 mg/I 0.002 Sample ID IFB laboratory Fortified Blank Run SUB-B120661 11/12/080855 Nitrogen NitratetNitrite as 0.973 mg/I 0.050 99 90 110 Sample ID B08110791-OO4DMS Sample Matrix Spike Run SUB-B120661 11/12/08 1117 Nitrogen NitrateNitrite as 0.977 mg/I 0.050 100 90 110 Sample ID 90811 0791OO4DMSD Sample Matrix Spike Duplicate Run SUB-BI 20661 11/12/08 1118 Nitrogen NitrateNitrite as 0.979 mg/I 0.050 100 90 110 0.2 10 Qualifiers RI Analyte reporting limit ENERGY LABORATORIES ND Not detected at the reporting limit Qualifiers RL Anatyte reporting limit Not detected at minimum detectable concentration Report Date 12/06/08 Work Order C08110216 RPD RPDL1m1t Qual Batch GA-0189 11/21/08 1429 11/21/08 1429 11/21/08 1607 86 11/21/08 1607 11/21/08 1607 26.9 LAI3OIt4 OWLS Result Units RL %REC Low Limit High Limit EMERG VLASORJ4 TORIES INC p2393 Sail CreekHirbway 8260 P0 Box 3258 Caspac WV82602 ____________To/I Free 888.235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com www.eaergylab.com QAQC Summary Report Client Denison Mines USA Corp Project 4th Quarter Groundwater Analyte Method E900.1 Sample ID MB-GA-0189 Gross Alpha minus Rn Sample ID LCS-GA-0189 Gross Alpha minus Rn Sample ID C08110536-OO2EDUP Gross Alpha minus Rn Sample ID TAP WATER-MS Gross Alpha minus Rn Sample ID TAP WATER-MSD Gross Alpha minus Rn Method Blank -0.2 pCi/I Laboratory Control Sample 27.1 pCi/L Sample Duplicate 2.07 pCi/L Sample Matrix Spike 24.2 pCi/I Sample Matrix Spike Duplicate 28.0 pCi/L 104 Run BERThOLD 770_081119A Run BERTHOLD 770_081 11 9A 70 130 Run BERTHOLD 770_081119A 18 Run BERTHOLD 770_081 11 9A 70 130 Run BERTHOLD 770_081 19A 70 130 15 88 103 ND Not detected at the reporting limit QAIQC summary Report Analyte Result Units RL %REC Low Limit High Limit RPD RPDLImIt Qual Method 5W8260B Batch Ri 10805 Sample ID 111108_LCS_3 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane mp-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes Total Sun- 2-Dichlorobenzened4 Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Laboratory Control Sample 100 ugIL 11 ug/L ii ug/L 11 ug/L 7.7 ug/L 21 ug/L 120 ug/L 11 ug/L ii ug/L 10 ug/L ii ug/L 31 ug/L Run SATURNCA_081 lilA 20 100 70 130 1.0 107 70 130 1.0 113 70 130 1.0 113 70 130 1.0 77 70 130 1.0 104 70 130 20 122 70 130 1.0 107 70 130 1.0 105 70 130 1.0 102 70 130 1.0 108 70 130 1.0 103 70 130 1.0 102 80 120 1.0 106 70 130 1.0 103 80 130 1.0 100 80 120 1111/08 1232 Sample ID 111108_MBLK6 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane mp-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes Total Surr 2-Dichlorobenzene-d4 Sun-Dibromofluoromethane Sun-p-Bromofluorobenzene Sum Toluene-d8 Method Blank ND ug/L 20 ND ug/L 1.0 ND ug/L 1.0 ND ug/L 1.0 1.0 102 80 120 1.0 120 70 130 1.0 98 80 120 1.0 95 80 120 Sample ID C08110156-OOIBMS Acetone Benzene Carbon tetrachloride Chloroform Chloromethane mp-Xylenes Methyl ethyl ketone Qualifiers Sample Matrix Spike 1600 ug/L 200 ug/L 190 ug/L 180 ug/L 110 ug/L 390 ug/L 1700 ug/L Run SATURNCA_081 lilA 400 79 70 130 20 100 70 130 20 93 70 130 20 92 70 130 20 56 70 130 20 97 70 130 400 87 70 130 11/11/08 2016 RL Analyte reporting limit Spike recovery outside of advisory limits ND Not detected at the reporting limit EIERGY LAI3ORA TORIES ENEAG YLABORA TORIES INC -2393 Sail CreekHIhway 8260 P0 Box 3256 Caspe WY82602 Toll Free 8882350515 3072350515 Fax 307234.1639 casper@energylab.com www.energylab.com Client Denison Mines USA Corp Project 4th Quarter Groundwater Report Date 12/06/08 Work Order C08110216 Run SATURNCA_081 lilA 1111/08 1426 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 ENEROYLABORA TORIES INC 2393 .9a11 Creek Hiqbway 82601 -P0 Box 3258 Caspe4 WY82602A1ToilFree 888.235.0515 307235 0515 Fai 307234.1639 -casperenergy/ab.com www.energylab.com LABORA roB/Es UAQC Summary Report Client Denison Mines USA Corp Report Date 12/06/08 Project 4th Quarter Groundwater Work Order C081 10216 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLImIt Qual Method SW82608 Batch RI 10805 Sample ID COBI 10156-001 BMS Sample Matrix Spike Run SATURNCA_081 lilA 11/11/06 2016 Methylene chloride 170 ug/L 20 86 70 130 Naphthalene 190 ug/L 20 94 70 130 o-Xylene 200 ug/L 20 99 70 130 Toluene 190 ug/L 20 93 70 130 Xylenes Total 590 ug/L 20 98 70 130 Surr 2-Dichlorobenzene-d4 20 91 80 120 Surr Dibromofluoromethane 20 97 70 130 Surr p-Bromofiuorobenzene 20 98 60 120 Sum Toluene-d8 20 98 80 120 Sample ID C081 10156-001 BMSD Sample Matrix Spike Duplicate Run SATURNCA_081 lilA 11/11/08 2054 Acetone 1600 ug/L 400 79 70 130 Benzene 190 ug/L 20 95 70 130 5.3 20 Carbon tetrachloride 190 ug/L 20 94 70 130 0.9 20 Chloroform 190 ug/L 20 95 70 130 3.9 20 Chloromethane 110 ug/L 20 54 70 130 3.6 20 mp-Xylenes 380 ug/L 20 94 70 130 2.5 20 Methyl ethyl ketone 1900 ug/L 400 94 70 130 7.9 20 Methylene chloride 180 ug/L 20 91 70 130 5.9 20 Naphthalene 200 ug/L 20 99 70 130 5.8 20 o-Xylene 190 ug/L 20 94 70 130 5.4 20 Toluene 190 ug/L 20 96 70 130 3.4 20 Xylenes Total 570 ug/L 20 94 70 130 3.5 20 Sum 12-Dichlorobenzene-d4 20 94 80 120 10 Sum Dibromofluoromethane 20 97 70 130 10 Sum p-Bromofluorobenzene 20 97 80 120 10 Surr Toluene-d8 20 100 80 120 10 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit Spike recovery outside of advisory limits EN I R G Y AB C f1 CR / 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 po s s i b l e Co m p a n y Na m e L cL e v t t e r . . a Mc s Re p o r t Ma i l Ad d r e s s VI 1/ In v o i c e Ad d r e s s 54 n i 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 be n c4 2 4 A r j St a t e .A Co n t a c t Na m e Ph o n F a x Em a i l $o 4 t t A l t t d tz P- us c n- n z I in v o i b E Co n t a c t Ph o n e Pu r c h a s e Or d e r TO uc tx L L Af l Z Z t EP N S t a t e Co m p l i a n c e Ye s No Sa m p l e r Pl e a s e Pr i n t Qu o t e / B o t t l e Or d e r Sp e c i a l Re p o r t / 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 E L I pr i o r to sh i p p e d by 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 RU S H sa m p l e su b m i t t a l 9/ 9 5 4S /7 - 1 2 1 4 fo r ch a r g e s an d co d e r iO e 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 DW A2 L A Co m m e n t s Re c e i p t T e m p I- GS A ED D / E D T E i e c t r o n i c Da t a O. c to 1/ On i c e E0 DS t a t e DL E V E L I V Cu S t o d y S e a I N PO 1 W I W W T P Fo r m a t No DO t h e r DN E L A C Bo t t l e s l Co o l e r s 02 . 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 Co l l e c t i o n MA T R I X Sig n a t u r e Jl 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 Ms t c h fl h i $ T fl -V /_ _ 23 4 /1 / 3 / O S O1 L I _I I I I I I I I i i Th ji / M / u S 4m 1K /I R / O J2 2 -G 4 J nR / Æ S 14 3 2 LA at 6 -a Cu s t o d y Re I g j 4 a h e d by n t Da t e / T i m e WM s C 11 - MU S T be 9a t u r e fl 11 / c o o2 97 t 2 Re c o r d Re l k i i e a by pr i n t rn by pr i n t Da t e r r i r n e Si g n e d Sa m p l e Dis p o s a l Re t u r n to Ch 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 Da t e / T i m e Sig n a t u r e 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 g 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 Energy Laboratories Inc Wo rkorde Receipt Checklist iiiiwiuiiiu Denison Mines USA Corp C08110216 Login completed by Edith McPike Date and Time Received 11/6/2008 940 AM Reviewed by Received by pb Reviewed Date Carrier name Next Day Air Shipping container/cooler in good condition Yes No Not Present Custody seats 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 lZJ 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 2C On ice Water VOA vials have zero headspace Yes No No VOA vials submitted Water p1-i acceptable upon receipt Yes No Not Applicable Contact and Corrective Action Comments None ENERG YLABORA TORIES INC 2393 Sail Creek Hiqhway 82601 RU Box 3258 Casper WY82602 Toll Free 8882350515 3072350515 Fax 307234.1639 caspenenergylab.ccm www.energylab.com Denison Mines USA Corp Date 06-Dec-08CLIENT Project Sample Delivery Group C081 10216 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 rnonitoring 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 CERTFICATIONS USEPA WY00002 FL-DOH NELAC E87641 California O2I1SCA Oregon WY200001 Utah 3072350515 Virginia 00057 Washington Cl 903 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 4th Quarter Groundwater CASE NARRATIVE EIERGY LAIO/A TOl/f THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT ENERGYLASORA TORIES INC 2393 Sail Creek Highway 82601 P0 Box 3258 Casper WV82602 Toll Free 888.235.0515 307.236.05/5 307234.1689 casperenergyIab.com www energy/aLz corn ANALYTICAL SUMMARY REPORT FQERGY TORIE5 December Ii 2008 Denison Mines USA Corp 64255 Hwy 191 Blending UT 84511 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 VOC5 Standard List Same As Above Same As Above Same As Above Same As Above Same As Above 5W8260B VOCs Standard List Report Approved By cphaa Workorder No C081 10279 Quote ID C1640 POC Wells Monthly Groundwater Sampling Project Name 4th Quarter Groundwater Energy Laboratories Inc received the following samples for Denison Mines USA Corp on 1/7/2008 for analysis Sample ID Client Sample ID Collect Date Receive Date Matrix Test C08110279-001 MW28 11/05/08 0938 11/07/08 Aqueous C08110279-002 MW29 11/05/08 1137 11/07/08 Aqueous C08110279-003 MW3O 11/05/08 1352 11/07/08 Aqueous COOl 10279-004 MW 23 11/05/08 1740 11/07/08 Aqueous C08110279-005 MW32 11/05/08 1607 11/07/08 Aqueous COOl 10279-006 COOl 10279-007 MW65 Trip Blank 11/05/08 1607 11/05/08 1740 11/07/08 11/07/08 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 Summary Report Page of LARORA TORIES ENERG YLASORA TORIES INC 2393 Sail Creek Hlqbway 8260 P0 Box 3258 Caspe4c WY82602 _____Toil Free 888.235.0515 307.235.0515 Fax 307234.1639 casper5energy/aA corn www.energylab.com QA/QC Summary Report Client Denison Mines USA Corp Project 4th Quarter Groundwater Report Date 12/11/08 Work Order C081 10279 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimIt Qu11 Method A2320 Batch Ri 10842 Sample ID MBLK-1 Alkalinity Total as CaCO3 Carbonate as C03 Bicarbonate as HCO3 Method Blank ND mg/L ND mg/L ND mg/L 0.2 Run MANTECH_081112A 11/12/08 1114 Sample ID LCS-1 Alkalinity Total as CaCO3 Laboratory Control Sample 200 mg/L 1.0 100 Run MANTECH_081 12A 11/12/08 1121 90 110 Sample ID C08110279-OOIAMS Alkalinity Total as CaCO3 Sample Matrix Spike 248 mg/L 1.0 98 Run MANTECH_081 12A 11/12/08 1246 80 120 Sample ID C08110279-OOIAMSD Alkalinity Total as CaCO3 Sample Matrix Spike Duplicate 250 mg/L 1.0 99 Run MANTECH_081 12A 11/12108 1253 80 120 0.7 20 Method A2540 Batch 08111 0_i Sample ID MBLK2_081110 Solids Total Dissolved TDS 180 Method Blank ND mg/L Run BAL-i_081110B 11/10/08 1548 Sample ID LCS2_081 110 Solids Total Dissolved TDS 180 Laboratory Control Sample 998 mg/L 10 100 Run BAL-1_08i 11 OB 11/10/08 1548 90 110 Sample ID C081 10279-OO4AMS Solids Total Dissolved TDS 180 Sample Matrix Spike 5720 mg/L 10 96 Run BAL-1_081 11 OB 11/10/08 1551 90 110 Sample ID C08110279-OO4AMSD Solids Total Dissolved TDS 180 Sample Matrix Spike Duplicate 5740 mg/L 10 97 Run BAL-1_081 lOB li/i 0/08 1552 90 110 0.2 10 Method A4500-CI Batch 0811 17A-CL-TTR-W Sample ID MBLK9-081117A Chloride Method Blank ND mg/L 0.4 Run TITRATION_081117A 11/17/08 1305 Sample ID C08110279-OO3AMS Chloride Sample Matrix Spike 339 mg/L 1.0 100 Run TITRTION_081 17A 11/17/08 1611 90 110 Sample ID C081 10279-OO3AMSD Chloride Sample Matrix Spike Duplicate 339 mg/L 1.0 100 Run TITRATION_081 11 7A 11/17/08 1613 90 110 10 Sample ID LCS3S-081 hA Chloride Laboratory Control Sample 3490 mg/L 1.0 99 Run TITRATION_081 17A 11/17/08 1613 90 110 Qualifiers RL Analyte reporting limit ND Not detected at the reporting Omit LASORA TORIES gfly ENERGYLABORA TORIES INC 2393 Sail CreekH4ibway 8260 P0 Box 3258 Caspei WY82602 ____________Toil Free 888.235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com wwwenergy/ab.com QAIQC Summary Report Client Denison Mines USA Corp Project 4th Quarter Groundwater Report Date 12/11/08 Work Order C08I 10279 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimIt Qual Method A4500-F Batch RI 10676 Sample ID MBLK Fluoride Method Blank ND mg/L 0.05 Run MANTECII_081110A 11/10/08 1219 Sample ID LCS Fluoride Laboratory Control Sample 1.06 mg/L 0.10 106 Run MANTECH_081 1OA 11/10/08 1221 90 110 Sample ID C081 10279-OO6AMS Fluoride Sample Matrix Spike 1.14 mg/L 0.10 94 Run MANTECH_081 1OA 11/10/08 1328 80 120 Sample ID C08110279-OO6AMSD Fluoride Sample Matrix Spike Duplicate 1.12 mg/L 0.10 92 Run MANTECH_081 1OA 11/10/06 1330 80 120 1.8 10 Method A4500-H Analytical Run ORIONSSSA_081 11 CA Sample ID ICVI_081110_1 pH Initial Calibration Verification Standard 6.84 s.u 0.010 100 11/10/08 1009 98 102 Method A4500-H Batch 0811 10_1_PH-W_555A-1 Sample ID C081 10229-OO4ADUP pH Sample Duplicate 8.20 s.u 0.010 Run ORION555A_081 IOA 11/10/08 1048 0.5 10 Method A4500H Analytical Run ORION555A_081 11 OB Sample ID ICVI_081 11O_2 pH Initial Calibration Verification Standard 6.92 s.u 0.010 101 11/10/08 1322 98 102 Method A4500-H Batch 0811 10_2_PH-W_555A-1 Sample ID C08110285-OO5ADUP pH Sample Duplicate 7.64 s.u 0.010 Run ORION555A_081110B 11/10/08 1403 0.9 10 Method A4500-NH3 Batch RI 10869 Sample ID MBLK-32 Nitrogen Ammonia as Method Blank 0.04 mg/L 0.02 Run TECHNICON_081 11 3A 11/13/08 1208 Sample ID LCS-33 Nitrogen Ammonia as Laboratory Control Sample 21.8 mg/L 0.20 109 Run TECHNICON_081 13A 11/13/08 1210 80 120 Sample ID CO8I 10279-OO2DMS Nitrogen Ammonia as Sample Matrix Spike 3.35 mg/L 0.050 125 Run TECHNICON_081 11 3A 11/13/08 1222 80 120 Sample ID COSI 10279-OO2DMSD Nitrogen Ammonia as Sample Matrix Spike Duplicate 3.26 mg/L 0.050 120 Run TECHNICON_081 11 3A 11/13/08 1224 80 120 2.7 20 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit Spike recovery outside of advisory limits ENERG VLABORA TORIES INC 2393 Sail Creek Hiqb roll Free 888.235.0515 307235.0515 Fax 307234.1639 way 82601 P0 Box 3258 Caspei WY82602 casperilenergy/ab.com www.energylab.com QAIQC Summary Report Client Denison Mines USA Corp Project 4th Quarter Groundwater Report Date 12/11/08 Work Order C081 10279 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method A4500-S04 Batch 08111 8_I Sample ID LCS-1_081118 Laboratory Control Sample Sulfate 4790 mg/L 59 Run TURB-2_081 11 BA 11/18/08 1023 100 90 110 Sample ID MBLK-1_081118 Method Blank Sulfate ND mg/L 0.6 Run TURB-2_081118A 11/18/08 1023 Sample ID COBI 10275-OOIAMS Sample Matrix Spike Sulfate 1000 mg/L 15 Run TURB-2_081 11 BA 11/18/08 1139 107 90 110 Sample ID C081 10275-OOIAMSD Sample Matrix Spike Duplicate Sulfate 1010 mg/L 15 Run TURB-2_081 11 8A 11/18/08 1140 108 90 110 0.5 10 Method E200.7 Batch Ri 11625 Sample ID MB-081201A Method Blank Calcium ND mg/L 0.1 Magnesium ND mg/L 0.04 Potassium ND mg/L 0.02 Sodium ND mg/L 0.8 Run ICP2-C_O8i2O1A 12/01/08 1400 Sample ID LFB-081201A Laboratory Fortified Blank Calcium 51.6 mg/L 0.50 Magnesium 51.0 mg/L 0.50 Potassium 47.8 mg/L 0.50 Sodium 51.0 mg/L 0.77 Run ICP2-C81201A 12/01/08 1404 103 85 125 102 85 125 96 85 125 102 85 125 Sample ID C08110279-OOIBMS2 Sample Matrix Spike Calcium 1020 mg/L 1.1 Magnesium 664 mg/L 1.0 Potassium 471 mg/L 1.0 Sodium 808 mg/L 7.7 Run ICP2-C_OBi2OiA 12/01/08 1412 94 70 130 98 70 130 92 70 130 99 70 130 Sample ID C08110279-OOIBMSD2 Sample Matrix Spike Duplicate Calcium 1020 mg/L 1.1 Magnesium 657 mg/L 1.0 Potassium 470 mgIL 1.0 Sodium 798 mgIL 7.7 Run ICP2-C_081201A 12/01/08 1416 94 70 130 20 96 70 130 1.1 20 92 70 130 0.1 20 97 70 130 1.3 20 Qualifiers RL Analyte reporting limit EIERGY LARORA TORIES ND Not detected at the reporting limit ENERG YLABORA TORIES INC 2893 Sail Creek Hthway 82601 P0 Box 3258 Caspei WY82602 ____________Toll Free 885235.0515 3072350515 Fax 307284.1639 caspenWenergylab.com wwwenergy/ab.com LAEOR1 TORIES QA/UC Summary Report Client Denison Mines USA Corp Report Date 12/11/08 Project 4th Quarter Groundwater Work Order C081 10279 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimlt Qua Method E200.8 Batch Ri 11088 Sample ID LRB Method Blank Run ICPMS2-C_081118A 11/18/08 1238 Arsenic 0.0001 mg/L 6E-05 Beryllium ND mg/L 3E-05 Cadmium 2E-05 mg/L E-05 Chromium ND mg/L 4E-05 Cobalt ND mg/L 2E-05 Copper ND mg/I 7E-05 Lead ND mg/I 3E-05 Manganese ND mg/I 5E-05 Molybdenum ND mg/I 5E-05 Nickel ND mg/I 0.0007 Silver ND mg/I SE-OS Thallium ND mg/I 1E-05 Tin ND mg/I 6E-05 Uranium ND mg/I IE-OS Vanadium ND mg/I 3E-05 Sample ID LFB Laboratory Fortified Blank Run ICPMS2-C_081118A 11/18/08 1245 Arsenic 0.0527 mg/I 0.0010 105 85 115 Beryllium 0.0526 mg/I 0.0010 105 85 115 Cadmium 0.0532 mg/I 0.0010 106 85 115 Chromium 0.0531 mg/I 0.0010 106 85 115 Cobalt 0.0526 mg/I 0.0010 105 85 115 Copper 0.0527 mg/I 0.0010 105 85 115 lead 0.0532 mg/I 0.0010 106 85 115 Manganese 0.0526 mg/I 0.0010 105 85 115 Molybdenum 0.0530 mg/I 0.0010 106 85 115 Nickel 0.0529 mg/I 0.0010 106 85 115 Silver 0.0211 mg/I 0.0010 106 85 115 Thallium 0.0535 mg/I 0.0010 107 85 115 Tin 0.0529 mg/I 0.0010 106 85 115 Uranium 0.0525 mg/I 0.00030 105 85 115 Vanadium 0.0525 mg/I 0.0010 105 85 115 Sample ID C081 10279-OO3BMS4 Sample Matrix Spike Run ICPMS2-C_081 11 8A 11/19/08 0205 Arsenic 0.371 mg/I 0.0010 74 70 130 Beryllium 0.363 mg/I 0.010 73 70 130 Cadmium 0.360 mg/I 0.010 72 70 130 Chromium 0.356 mg/I 0.050 71 70 130 Cobalt 0.353 mg/I 0.010 70 70 130 Copper 0.359 mg/I 0.010 71 70 130 Lead 0.360 mg/I 0.050 72 70 130 Manganese 0.403 mg/I 0.010 72 70 130 Molybdenum 0.360 mg/I 0.10 72 70 130 Qualifiers RI Analyte reporting limit ND Not detected at the reporting limit ENERGYLAHORATOR/ES INC 2393 Sail Creek Hjqhway 82601 P0 Box 3258 Casper 14Y82602 Toil Free 888.2350515 307.2350515 Fax 307234.1639 casperenergy/ab.com www.energylab.com QAIQC Summary Report Report Date 12/11/08 Work Order C08110279 ENERGY LABORA TORIES Client Denison Mines USA Corp Project 4th Quarter Groundwater Sample ID C08110279-003BM54 Nickel Silver Thallium Tin Uranium Vanadium Sample Matrix Spike 0.355 mgIL 0.103 mg/L 0.361 mg/I 0.352 mg/L 0.367 mg/L 0.362 mg/L Run ICPMS2-C_081118A 11/19/08 0211 72 70 130 2.6 20 71 70 130 1.8 20 70 70 130 2.1 20 69 70 130 2.6 20 68 70 130 3.5 20 70 70 130 2.3 20 70 70 130 3.2 20 69 70 130 3.3 20 70 70 130 20 69 70 130 2.9 20 52 70 130 0.4 20 70 70 130 3.1 20 69 70 130 2.4 20 70 70 130 3.5 20 70 70 130 2.6 20 RI Analyte reporting limit ND Not detected at the reporting limit Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimlt QJ Method E200.8 Batch Ri 11088 C08110279-OO3BMSD4 71 52 72 70 72 72 Run ICPMS2-C_081 18A 70 130 70 130 70 130 70 130 70 130 70 130 11/19/08 0205 Sample ID Arsenic Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Molybdenum Nickel Silver Thallium Tin Uranium Vanadium 0.050 0.010 0.10 0.10 0.00030 0.10 0.0010 0.010 0.010 0.050 0.010 0.010 0.050 0.010 0.10 0.050 0.010 0.10 0.10 0.00030 0.10 Sample Matrix Spike Duplicate 0.361 mg/I 0.356 mg/I 0.352 mg/I 0.347 mg/L 0.340 mg/I 0.351 mg/I 0.348 mg/L 0.390 mg/L 0.353 mg/I 0.345 mg/I 0.103 mg/I 0.350 mg/I 0.344 mg/I 0.355 mg/L 0.352 mg/I Qualifiers Spike recovery outside of advisory limits QAIQC Summary Report Run ICPMS4-C_081 19B 11/19/08 1338 1111 9/08 1508 11/19/08 1935 Sample ID Arsenic Cadmium C081 10279-OO3BMSD4 Sample Matrix Spike Duplicate 0.0495 mg/L 0.0496 mg/I Run ICPMS4-C 08111 9B 0.0010 98 70 130 0.010 99 70 130 11/19/08 1941 0.1 20 0.2 20 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 FQERGY TOR/ES ENERGYLASORA TORIES INC 2393 Sail Creek Hqhway 8260 PC Box 3258 Caspei WV82602 Toil Free 888.235.0515 307235.0515 Fax 307234.1639 casperenergyIab.com www.energylab.com Client Denison Mines USA Corp Project 4th Quarter Groundwater Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qu Method E200.8 Batch Ri 11247 Report Date 12/11/08 Work Order C06110279 Sample ID LRB Method Blank Arsenic ND mg/I 4E-05 Cadmium E-05 mg/I 3E-06 Calcium ND mg/I 0.005 Copper 0.0002 mg/I 3E-05 Iron ND mg/I 0.0002 Magnesium ND mg/L 0.003 Mercury SE-OS mg/I EMS Nickel ND mg/I 3E-05 Potassium ND mg/I 0.006 Selenium ND mg/I 0.0001 Sodium ND mg/I 0.01 Zinc 0.0004 mg/I 3E-05 Sample ID IFB Laboratory Fortified Blank Run ICPMS4-C_081 19B Arsenic 0.0508 mg/I 0.0010 102 85 115 Cadmium 0.0530 mg/I 0.0010 106 85 115 Calcium 12.0 mg/I 0.0049 96 85 115 Copper 0.0514 mg/I 0.0010 103 85 115 Iron 1.29 mg/I 0.0010 103 85 115 Magnesium 12.5 mg/I 0.0030 100 85 115 Mercury 0.00514 mg/I 0.0010 102 85 115 Nickel 0.0512 mg/I 0.0010 102 85 115 Potassium 11.8 mg/I 0.0059 94 85 115 Selenium 0.0533 mg/L 0.0010 107 85 115 Sodium 12.6 mg/I 0.010 101 85 115 Zinc 0.0546 mg/I 0.0010 108 85 115 Sample ID C081 10279-OO3BMS4 Sample Matrix Spike Run ICPMS4-C_081 19B Arsenic 0.0496 mg/I 0.0010 98 70 130 Cadmium 0.0496 mg/I 0.010 99 70 130 Calcium 243 mg/I 1.0 70 130 Copper 0.0456 mg/I 0.010 91 70 130 Iron 1.36 mg/I 0.030 99 70 130 Magnesium 76.5 mg/I 1.0 70 130 Mercury 0.00482 mg/I 0.0010 96 70 130 Nickel 0.0463 mg/I 0.050 93 70 130 Potassium 16.9 mg/I 1.0 87 70 130 Selenium 0.0815 mg/I 0.0010 103 70 130 Sodium 115 mg/I 1.0 70 130 Zinc 0.0525 mg/I 0.010 100 70 130 ND Not detected at the reporting limit ENERGYLABORA TORIES INC p2393 Sail CreekHihway 6260 P0 Sax 3258 Caspe WY82602 Ta//Free 885235.0515 3072350515 Fax 307234.1639 casperenergy/ab.cam www.energylab.comLASORATORIES UAIUC summary Report Client Denison Mines USA Corp Report Date 12/11/08 Project 4th Quarter Groundwater Work Order C081 10279 Anaiyte Result Units RL %REC Low Limit High Limit RPD RPDLImit Qual Method E200.8 Batch RI 11247 Sample ID C08110279-OO3BMSD4 Calcium Copper Iron Magnesium Mercury Nickel Potassium Selenium Sodium Zinc Sample Matrix Spike Duplicate 243 mg/L 0.0454 mg/I 1.36 mg/L 76.3 mg/I 0.00495 mg/L 0.0462 mg/L 17.3 mg/L 0.0815 mg/I 115 mg/I 0.0517 mg/L 1.0 0.010 0.030 1.0 0.0010 0.050 1.0 0.0010 1.0 0.010 91 98 99 92 90 102 98 Run ICPMS4-C 081 1198 70 130 70 130 0.3 70 130 0.5 70 130 0.2 70 130 2.6 70 130 70 130 70 130 70 130 0.5 70 130 1.5 11/19/08 1941 20 20 20 20 20 20 20 20 20 20 Method E353.2 Batch Ri 10789 Sample ID MBI.K-1 Nitrogen NitrateNitrite as Method Blank ND mg/I 0.03 Run TECHNICON_08i1i2A 11/12/08 1004 Sample ID I.CS-2 Nitrogen NitrateNitrite as Laboratory Control Sample 2.30 mg/I 0.10 92 Run TECHNICON_081 12A 90 110 11/12/08 1006 Sample ID C081 10317-OO5DMS Nitrogen NitrateNitriteas Sample Matrix Spike 2.18 mg/I 0.10 100 Run TECHNICON_081 11 2A 90 110 li/i 2/08 1021 Sample ID C08110317-OO5DMSD Nitrogen NitrateNitrite as Sample Matrix Spike Duplicate 2.23 mg/I 0.10 102 Run TECHNICON_081112A 90 110 2.3 11/12/08 1024 10 Method E900.i Batch GA-0i 90 Sample ID MB-GA-0190 Gross Alpha minus Rn Method Blank -0.09 pCi/I Run BERTHOI.D 770_08i1i9B 11/21/08 1434 Sample ID LCS-GA-0190 Gross Alpha minus Rn Laboratory Control Sample 28.3 pCi/I 108 Run BERTHOLD 770_081 1198 70 130 11/21/08 1434 Sample ID TAP WATER-MS Gross Alpha minus Rn Sample Matrix Spike 22.4 pCi/I 83 Run BERTHOI.D 770_081 198 70 130 11/21/08 1612 Sample ID TAP WATER-MSD Gross Alpha minus Rn Sample Matrix Spike Duplicate 24.3 pCi/I 90 Run BERTHOI.D 770_081 19B 70 130 8.3 11/21/08 1612 28.3 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 Not detected at minimum detectable concentration ENERGYLASORA TORIES INC 2393 Sail Creek Hqhway 82501 20 Box 3258 Caspe WV82602 __________Toil Free 888.235 0515 307.235 0515 Fai 307234.1639 casperGenergy/ab.com www.energylab.com TORIES QAIQC Summary Repofl Client Denison Mines USA Corp Report Date 12/11/08 Project 4th Quarter Groundwater Werk Ordec COBi 10279 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method SW8260B Batch Ri 10805 Sample ID 111 108_LCS_3 Laboratory Control Sample Run SATIJRNCA_081 iiIA 11/11108 1232 Acetone 100 ug/L 20 100 70 130 Benzene 11 ug/L 1.0 107 70 130 Carbon tetrachloride 11 ug/L 1.0 113 70 130 Chloroform 11 ug/L 1.0 113 70 130 Chloromethane 7.7 ug/L 1.0 77 70 130 mp-Xylenes 21 ug/L 1.0 104 70 130 Methyl ethyl ketone 120 ug/L 20 122 70 130 Methylene chloride 11 ug/L 1.0 107 70 130 Naphthalene 11 ug/L 1.0 105 70 130 o-Xylene 10 ug/L 1.0 102 70 130 Toluene Ii ug/L 1.0 108 70 130 Xylenes Total 31 ug/L 1.0 103 70 130 Surr 2-Dichlorobenzene-d4 1.0 102 80 120 Surr Dibromofluoromethane 1.0 106 70 130 Surr p-Bromofluorobenzene 1.0 103 80 130 Surr Toluene-d8 1.0 100 80 120 Sample ID 111108_MBLK_6 Method Blank Run SATURNCA_081111A 11/11/08 1426 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 12-Dichlorobenzene-d4 1.0 102 80 120 Surr Dibromofluoromethane 1.0 120 70 130 Surr p-Bromofluorobenzene 1.0 98 80 120 Surr Toluene-d8 1.0 95 80 120 Sample ID C08110156-O01 BMS Sample Matrix Spike Run 8ATURNCA_081 lilA 11/11/08 2016 Acetone 1600 ug/L 400 79 70 130 Benzene 200 ug/L 20 100 70 130 Carbon tetrachloride 190 ug/L 20 93 70 130 Chloroform 180 ug/L 20 92 70 130 Chloromethane 110 ug/L 20 56 70 130 mp-Xylenes 390 ug/L 20 97 70 130 Methyl ethyl ketone 1700 ug/L 400 87 70 130 Qualifiers RL Anayte reporting limit ND Not detected at the reporting limit Spike recovery outside of advisory limits ENEROVLABORA TORIES INC 2393 Sail Creek Hqhway 82601 RC Box 3258 Caspei WY82602 ____________Toll Free 888.235.0515 307235.0515 Fax 307234.1639 casperenergy/aA corn www.energylab.com LAI3ORA TORIES QA/QC SUthmry Report Client Denison Mines USA Corp Report Date lvi iioe Project 4th Quarter Groundwater Work Order C081 10279 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method SW8260B Batch Ri 10805 Sample ID C08110156-OOIBMS Sample Matrix Spike Run SATURNCA_081111A 11/11/08 2016 Methylene chloride 170 ug/L 20 86 70 130 Naphthalene 190 ug/L 20 94 70 130 o-Xylene 200 ug/L 20 99 70 130 Toluene 190 ug/L 20 93 70 130 Xylenes Total 590 ugIL 20 98 70 130 Surr 2-Dichlorobenzene-d4 20 91 80 120 Surr DibromofluorOmethane 20 97 70 130 Surr p-Bromofluorobenzene 20 98 80 120 Surr Toiuene-d8 20 98 80 120 Sample ID C08110156.OOIBMSD Sample Matrix Spike Duplicate Run SATURNCA_081111A 11/11/08 2054 Acetone 1600 ug/L 400 79 70 130 Benzene 190 ug/L 20 95 70 130 5.3 20 Carbon tetrachloride 190 ug/L 20 94 70 130 0.9 20 Chloroform 190 ug/L 20 95 70 130 3.9 20 Chloromethane 110 ug/L 20 54 70 130 3.6 20 mp-Xylenes 380 ug/L 20 94 70 130 2.5 20 Methyl ethyl ketorie 1900 ug/L 400 94 70 130 7.9 20 Methylene chloride 180 ug/L 20 91 70 130 5.9 20 Naphthalene 200 ug/L 20 99 70 130 5.8 20 o-Xylene 190 ug/L 20 94 70 130 5.4 20 Toluene 190 ug/L 20 96 70 130 3.4 20 Xylenes Total 570 ug/L 20 94 70 130 3.5 20 Surr 12-Dichlorobenzene-d4 20 94 80 120 10 Sum Dibromofluoromethane 20 97 70 130 10 Sum p-Bromofluorobenzene 20 97 80 120 10 Sum Toluene-d8 20 100 80 120 10 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit Spike recovery outside of advisory limits ENEROYLASORA TORIES INC 2393 Sail Creek Hiqbway 82601 PU Box 3258 Caspe WY82602 ____________Toll Free 888235 0515 307235.0515 Fax 307234.1639 casper4enorgylab.com wwwenergy/acom LAIIORA TORIES QAJQC Summary Report Client Denison Mines USA Corp Report Date 12/11/08 Project 4th Quarter Groundwater Work Order C081 10279 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method SW8260B Batch Ri 10991 Sample ID 13-Nov-08_LCS_14 Laboratory Control Sample Duplicate Run GCMS2_081 ii3A 11/13/08 1711 Acetone 100 ug/L 20 100 70 130 Benzene 10 ug/L 1.0 103 70 130 Carbon tetrachloride 10 ug/L 1.0 103 70 130 Chloroform 11 ug/L 1.0 110 70 130 Chloromethane 12 ug/L 1.0 117 65 135 mp-Xylenes 22 ug/L 1.0 109 70 130 Methyl ethyl ketone 110 ug/L 20 111 70 130 Methylenechloride 11 ug/L 1.0 110 70 130 Naphthalene 11 ug/L 1.0 114 70 130 o-Xylene 11 ug/L 1.0 111 70 130 Toluene 11 ug/L 1.0 106 70 130 Xylenes Total 33 ug/L 1.0 110 70 130 Surr 2-Dichlorobenzene-d4 1.0 102 80 120 Surr Dibromofluoromethane 1.0 102 70 130 Sum p-Bromofluorobenzene 1.0 102 80 130 Surr Toluene-d8 1.0 100 80 120 Sample ID 13-Nov-08_MBLK_18 Method Blank Run GCMS2_081 13A 11/13/08 1947 Acetone ND ugIL 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 ugIL 1.0 o-Xylene ND ug/L 1.0 Toluene ND ug/L 1.0 Xylenes Total ND ug/L 1.0 Sum 2-Dichlorobenzene-d4 1.0 100 80 120 Surr Dibromofluoromethane 1.0 100 70 130 Surr p-Bromofluorobenzene 1.0 104 80 120 Sum Toluene-d8 1.0 99 80 120 Sample ID C08110317-OO7KMS Sample Matrix Spike Run GCMS2_081 113A 11/14/08 0343 Acetone 2000 ug/L 400 98 70 130 Benzene 170 ugfL 20 87 70 130 Carbon tetrachloride 170 ug/L 20 87 70 130 Chloroform 200 ug/L 20 102 70 130 Chloromethane 190 ug/L 20 94 70 130 mp-Xylenes 360 ug/L 20 90 70 130 Methyl ethyl ketone 2200 ug/L 400 110 70 130 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit Sample ID C08110317-OO7KMS Methylene chloride Naphthalene o-Xylene Toluene Xylenes Total Surr 2-Dichlorobenzene-d4 Surr Dibromofluoromethane Sum p-Bromofluorobenzene Surr Toluene-d8 Acetone Benzene Carbon tetrachloride Chloroform Chloromethane mp-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes Total Sum 2-Dichlorobenzene-d4 Sum Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Sample Matrix Spike 200 ugIL 180 ug/L 190 ug/L 190 ug/L 550 ug/L Run GCMS2_081 13A 20 100 70 130 20 88 70 130 20 94 70 130 20 94 70 130 20 91 70 130 20 103 80 120 20 112 70 130 20 100 80 120 20 102 80 120 Sample Matrix Spike Duplicate Run GCMS2O8I 11 3A 400 99 70 130 20 97 70 130 20 106 70 130 20 107 70 130 20 102 70 130 20 100 70 130 400 124 70 130 20 104 70 130 20 132 70 130 20 104 70 130 20 102 70 130 20 101 70 130 20 103 80 120 20 107 70 130 20 99 80 120 20 101 80 120 10 20 19 20 4.6 20 7.3 20 10 20 12 20 4.3 20 39 20 SR 10 20 20 10 20 10 10 10 10 Qualifiers RL Analyte reporting limit RPD exceeds advisory limit ND Not detected at the reporting limit Spike recovery outside of advisory limits EN5RGY LABO/A TORIES ENERO YLABORA TORIES INC 2393 Sail Creek Highway 82601 RO Box 3258 Caspei WY82502 To/I Free 888.235.0515 307235.0515 Fax 307234.1639 casperenergy/ab.com www.energylab.com Client Denison Mines USA Corp Project 4th Quarter Groundwater QA/UC summary Report Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method 5W8260B Batch R110991 Report Date 12/11/08 Work Order C081 10279 Sample ID C08110317-OO7KMSd 2000 ug/L 11/14/08 0343 11/14/080422 190 210 210 200 400 2500 210 260 210 200 610 ug/L ug/L ug/L ug/L ug/L ugIL ugIL ugh ugh ug/L ug/L 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 po s s i b l e Co m p a n y Na m e M\ A s Re p o r t Ma i l Ad d r e s s go vs i i In v o i c e Ad d r e s s Sj 4 t c 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 t o s a m p l e s u b m i t t a l f o r t h e f o l l o w i n g Do w DA 2 L A GS A ED D / E D l 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 LE V E L IV Ot h e r NE 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 N S t a t e Co m p l i a n c e Qa c 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 PJ r zz z ln g 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 Or d e r Va u ix Ln 2Z 2 - f 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 US QS ra x fo r ch a r g e s an d Co o l e r ID s sc h e d u l i n g S e e CO 5 3 In s t r u c t i o n Pa g e C. U c- a k Co m m e n t s Re c e l p t l e m p cu On IC Wf 1p IX No .a _ Li i cu s t o d y Se a l 5N Bo t t l e s co o l e r s In t a c t TR I X Sig n a t u r e Ma t c h -. _ . - -o _I _ I I I I I i i 6u II I I I I I I I t 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 fl 4 i J S 3y v t t j 30 1f r J2j Ig 1M 1 A J 3 2 Co l l e c t i o n Da t e f- - O t // - - j j- s - o v fj g Co l l e c t i o n Ti m e i- i s a 4O o1 10 ur e Rp W II i 1 0 2 Oe t e I n r n e 7 p gn 7 7 Re c o r d Cu s t o d y Da t e l t 1 m e lg h MU S T be ty b Y P d Oa t 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 b r y Da t e / T i m e Sig n a t u r e 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 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 o 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 g 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 EN I R G Y /1 f J R/ 1 Pa g e A of Energy Laboratories Inc Workorder Receipt Checklist Denison Mines USA Corp Login completed by Edith McPike Reviewed by Reviewed Date IJIIIilhIMIIlluhIMU C081 10279 Date and Time Received 11/712008 930 AM Received by pb Carrier name Next Day Air 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 None No NOD NOD NOD No No NOD NOD NOD NOD Yes Not Present Yes Not Present Yes Not Present Yes Yes Yes Yes Yes EJ Yes Yes 2C On ice Yes No No VOA vials submitted Yes 121 No Not Applicable ENERGYLASORA TORIES INC 2393 Sail Creek Hiq/iway 82501 P0 Box 3258 Caspei WY82602 To//Free 888.235.0515 307.235.0515 Fax 307234.1639 caspen5energy/ab.com www.energylab.com LA DORA TORIES CLIENT Denison Mines USA Corp Date 11-Dec-08 Project 4th Quarter Groundwater CASE NARRATIVE Sample Delivery Group C081 10279 ORIGINAL SAMPLE SUBMITTALS All original sample submittals have been returned with the data package SAMPLE TEMPERATURE COMPLIANCE 4C 2C Ternperature 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 rnethod 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 resulti 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 CERTFICATIONS USEPA WY00002 FL-DOH NELAC E87641 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 ENERGYLABORA TORIES INC -2393 Salt Creek Hiqbway 82601 -P0 Box 3258 Caspe.c WV82602 Toll ftee 889235 0515 307235.0515 Fax 307234.1639 casperener.qylab.com wwwenergylab.com ANALYTICAL SUMMARY REPORT EIERGY LASORA TORIES December 31 2008 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 Same As Above Same As Above Same As Above Same As Above Same As Above Same As Above Same As Above Same As Above Same As Above Same As Above Metals by ICP/ICPMS Dissolved Alkalinity QA Calculations Cancelled Sample Chloride Fluoride Nitrogen Ammonia Nitrogen Nitrate Nitrite pH Gross Alpha minus Rn222 and Uranium Sulfate SW8260B VOCs Standard List Denison Mines USA Corp 6425 Hwy 191 Blanding UT 84511 Workorder No C08110568 Quote ID C1640 POC Wells Monthly Groundwater Sampling Project Name 4th Quarter Groundwater Energy Laboratories Inc received the following 17 samples for Denison Mines USA Corp on 11/14/2008 for analysis Sample ID Client Sample ID Collect Date Receive Date Matrix Test C08110568-001 MW2 11/12/08 0918 11/14/08 Aqueous COOl 10568-002 MW 11113/08 0834 11/14/08 Aqueous C081 10568-003 MW 11/11/08 1232 11/14/08 Aqueous C081 10568-004 MW 11 11/10/08 1437 11/14/08 Aqueous C08110568-005 MW 12 11/11/08 1415 11/14/08 Aqueous C08110568-006 MW 14 11/10/08 1636 11/14/08 Aqueous C08110568-007 MW15 11/11/08 1012 11/14/08 Aqueous C08110568-008 MW17 11/12/081147 11/14/08 Aqueous C08110568-009 MW2O 11/12/08 1537 11/14/08 Aqueous C08110568-010 MW22 11/12/08 1452 11/14/08 Aqueous C08110568-011 MW 24 11/11/08 1450 11/14/08 Aqueous C08110568-012 MW25 11/10/08 1217 11/14/08 Aqueous Summary Report Page of EIERGY LABOR/i TORIES ENERO YLASORA TORIES INC 2393 Sail CreekH4hway 82601 RU Box 3258 Caspei WV82602 roil Free 888.235.0515 307.2350515 Fax 307.234.1639 caspeit4energy/ab.com www energy/aix corn ANALYTICAL SUMMARY REPORT C08110568-013 MW 26 11/13/08 0810 11/14/08 Aqueous Metals by ICP/ICPMS Dissolved Alkalinity QA Calculations Chloride Fluoride Nitrogen Ammonia Nitrogen Nitrate Nitrite pH Gross Alpha minus Rn222 and Uranium Solids Total Dissolved Sulfate 5W8260B VOCs Standard List C081 10568-014 MW 31 11/11/08 1002 11/14/08 Aqueous Same As Above C081 10568-015 MW 60 11/13/08 0740 11/14/08 Aqueous Same As Above C081 10568-016 MW 70 11/12/08 1147 11/14/08 Aqueous Same As Above C081 10568-017 Trip Blank 11/13/08 0834 11/14/08 Aqueous SW826B 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 egarding these tests results please call Report Approved By 4wz U3d1 Summary Report Page of EIERGY LABORATORIES __________ENERG YLASORA TORIES INC 2393 Sail CreekHiq/mvay 82601 RC Box 3258 Casper WV82602 Toil Free 888.235.0515 307.235.0515 Fax 307234.1639 casperenergv/ab.com wwwenergylab.com QA/QC Summary Report Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Work Order C081 10568 LA1 Result Units RL %REC Low Limit High Limit RPD RPDLImIt Qual Method A2320 Batch R111301 Sample ID MBLK-1 Alkalinity Total as CaCO3 Carbonate as C03 Bicarbonate as HCO3 Method Blank ND mg/L ND mg/I ND mg/L 0.2 Run MANTECH_081 1208 11/20/08 1744 Sample ID LCS-1 Alkalinity Total as CaCO3 Laboratory Control Sample 197 mg/I 1.0 98 Run MANTECH_081 1208 11/20/08 1751 90 110 Sample ID C08110568-OOIAMS Alkalinity Total as CaCO3 Sample Matrix Spike 421 mg/I 1.0 99 Run MANTECH_0811208 11/20/08 2250 80 120 Sample ID C08110568-OOIAMSD Alkalinity Total as CaCO3 Sample Matrix Spike Duplicate 423 mg/L 1.0 101 Run MANTECH_081 1208 11/20/08 2257 80 120 0.6 20 Method A2540 Batch 081117_1_SLDS-TDS-W Sample ID MBLKI_081117 Solids Total Dissolved TDS 180 Method Blank ND mg/L Run BAL-1 0811178 11/17/08 1347 Sample ID ICSI_081 117 Solids Total Dissolved TDS 180 Laboratory Control Sample 1010 mg/L 10 101 Run BAL-1_081 1178 11/17/08 1348 90 110 Sample ID C081 10568-OOIAMS Solids Total Dissolved TDS 180 Sample Matrix Spike 5040 mg/L 10 97 Run BAL-1_081 1178 11/17/08 1358 90 110 Sample ID Co8110568-OOIAMSD Solids Total Dissolved TDS 180 Sample Matrix Spike Duplicate 5040 mg/I 10 97 Run BAL-1_081 1178 11/17/08 1359 90 110 10 Sample ID Co8110568-OI2AMS Solids Total Dissolved TDS 180 Sample Matrix Spike 4700 mg/L 10 100 Run BAL-1_081 1178 11/17/08 1404 90 110 Sample ID C081 10568-01 2AMSD SoiidsTotalDissolvedTDS180C Sample Matrix Spike Duplicate 4700 mgIL 10 100 Run BAL-1_081 1178 11/17/08 1404 90 110 10 Sample ID C08110569-OOSAMS Solids Total Dissolved TDS 180 Sample Matrix Spike 2220 mg/I 10 98 Run BAL-1_081 1178 11/17/08 1408 90 110 Sample ID C08110569-OO5AMSD SolidsTotalDissolvedTDS180C Sample Matrix Spike Duplicate 2250 mg/L 10 100 Run BAL-1_081 1178 11/17/08 1408 90 110 1.2 10 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit ENERO YLABORA TORIES INC 2393 Salt Creek Hi.qbway 8260 RO Box 3258 Caspe WY82602 Toll Free 888.235.0515 307.235.0515 Fax 307234.1639 caspeit4energylab.com wwwenergy/ab.com QAIQC Summary Report Client Denison Mines USA Corp Report Date 12/31108 Project 4th Quarter Groundwater Work Order C081 10568 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLImIt Qual Method A4500-Cl Batch 0811 21A-CL-TTR-W Sample ID MBLK9-081121A Method Blank Run TITRATION_081121A 11/21/08 1057 Chloride ND mg/L 0.4 Sample ID LCS35-081121A Laboratory Control Sample Run TITRATION_081 121A 11/21/08 1205 Chloride 3530 mg/L 1.0 100 90 110 Sample ID C08110554-OO4AMS Sample Matrix Spike Run TITRATION_081 121A 11/21/08 1257 Chloride 5080 mg/L 1.0 99 90 110 Sample ID C08110554-OO4AMSD Sample Matrix Spike Duplicate Run TITRATION_081 121A 11/21/08 1258 Chloride 5080 mg/L 1.0 99 90 110 10 Sample ID C08110568-OIOAMS Sample Matrix Spike Run TITRATION 081121A 11/21/08 1346 Chloride 98.8 mg/L 1.0 98 90 110 Sample ID C08110568-OIOAMSD Sample Matrix Spike Duplicate Run TITRATlON.08i 121A 11/21/08 1348 Chloride 98.8 mg/L 1.0 98 90 110 10 Sample ID C08110573-OO2AMS Sample Matrix Spike Run TITRATlON981 121A 11/21/08 1406 Chloride 4440 mg/L 1.0 101 90 110 Sample ID C08110573-OO2AMSD Sample Matrix Spike Duplicate Run TITRATION_081 121A 11/21/08 1407 Chloride 4440 mg/L 1.0 101 90 110 10 Method A4500-F Batch Ri 11295 Sample ID MBLK-1 Method Blank Run MANTECH_081 20A 11/20/08 1055 Fluoride ND mg/L 0.05 Sample ID LCS-1 Laboratory Control Sample Run MANTECH_081 20A 11/20/08 1058 Fluoride 1.00 rng/L 0.10 100 90 110 Sample ID COBhI 0568-OO2AMS Sample Matrix Spike Run MANTECH_081 20A 11/20/08 1404 Fluoride 1.40 mg/L 0.10 102 80 120 Sample ID C08110568-OO2AMSD Sample Matrix Spike Duplicate Run MANTECH_081 120A 11/20/08 1407 Fluoride 1.40 mg/L 0.10 102 80 120 10 Sample ID C08110588-OI2AMS Sample Matrix Spike Run MANTECH_081120A 11/20/08 1446 Fluoride 1.35 mg/L 0.10 101 80 120 Sample ID C08110588-OI2AMSD Sample Matrix Spike Duplicate Run MANTECHfi81 i2OA 11/20/08 1450 Fluoride 1.35 mg/L 0.10 101 80 120 10 Qualifiers RL Analyte reporting limit EIERGY LAI3ORA TORIES ND Not detected at the reporting limit EIERGY LARORA TORIES ENERGYLABORA TORIES INC 2393 Saft Creek Hit way 82501 RO Scx3258 Casper WV82602 re/I Free 888.235 0515 301235 0515 Far 307.234.1539 casperenergy/ab.com wwwenergy/ab.cern QAIQC Summary Report Client Denison Mines USA Corp Project 4th Quarter Groundwater Report Date 12/31/08 Work Order C081 10568 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method A4500-H Analytical Run ORION555A_081 11 7B Sample ID ICVI_081 17_2 pH Initial Calibration Verification Standard 6.91 s.u 0.010 101 11/17/08 1334 98 102 Method A4500-H Batch 0811 17_2_PH-W_555A-1 Sample ID C081 10568-OO3ADUP pH Sample Duplicate 7.74 s.u 0.010 Run 0R10N555A_081 178 11/17/08 1412 0.5 10 Sample ID C08110568413ADUP pH Sample Duplicate 7.27 s.u 0.010 Run 0R10N555081 17B 11/17/08 1443 3.1 10 Method A4600-SO4 Batch 081 124j_SO4-TURB-W Sample ID LCS-1_O811 24 Sulfate Laboratory Control Sample 4980 mg/L 59 104 Run TURB-2_081 124A 11/24/080906 90 110 Sample ID MBLK-I_081124 Sulfate Method Blank ND mg/L 0.6 Run TURB-2_081 124A 11/24/08 0906 Sample ID C08110557-OOIAMS Sulfate Sample Matrix Spike 54.4 mgIL 1.0 106 Run TURB-2_081 124A 11/24/08 1231 90 110 Sample ID C08110557-OOIAMSD Sulfate Sample Matrix Spike Duplicate 54.3 mg/L 1.0 105 Run TURB-2_081 124A 11/24/08 1234 90 110 0.2 10 Sample ID C08110568-OI5AMS Sulfate Sample MatrixSpike 23.4 mg/L 1.0 104 Run TURB-2_081124A 11/24/08 1350 90 110 Sample ID C08110568-O1 SAMSD Sulfate Sample Matrix Spike Duplicate 23.4 mg/L 1.0 104 Run TURB-2_081 124A 11/24/08 1352 90 110 10 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit ENERGY LASORA TOte/ES EIIERGYLASORA TORIES INC p2393 Salt CreekHiqbway 82601 P0 Box3258 Casper WV82602 Toll Free 888.235.0515 307235.0515 Fax 307234.1639 casper.energy/ab.com wwwenergylab.com QAIQC Summary Report Report Date 12/31/08 Work Order coal 0568 Client Denison Mines USA Corp Project 4th Quarter Groundwater LAneI Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method E200.7 Batch Ri 12099 Sample ID MB-081210A Method Blank Run ICP2-C_081210A 12/10/08 1220 calcium ND mg/L 0.1 Magnesium ND mg/L 0.04 Potassium ND mg/L 0.02 Sodium ND mg/L 0.8 Sample ID LFB-08l2lOA Laboratory Fortified Blank Run lcP2-c_08i2l0A 12/10/08 1224 calcium 53.2 mgIL 0.50 106 85 125 Magnesium 53.8 mg/L 0.50 108 85 125 Potassium 44.8 mg/L 0.50 90 85 125 Sodium 49.0 mg/L 0.77 98 85 125 Sample ID C0811070$-0018M52 Sample Matrix Spike Run lcP2-c_081210A 12/10/08 1511 calcium 353 mg/L 1.0 93 70 130 Magnesium 163 mg/L 1.0 99 70 130 Potassium 96.9 mgJL 1.0 92 70 130 Sodium 216 mgJL 1.5 104 70 130 Sample ID C08110705-OOIBMSD2 Sample Matrix Spike Duplicate Run IcP2-c_081210A 12/10/08 1515 calcium 358 mg/L 1.0 98 70 130 1.6 20 Magnesium 169 mg/L 1.0 105 70 130 3.8 20 Potassium 96.0 mg/L 1.0 91 70 130 20 Sodium 213 mg/L 1.5 101 70 130 1.4 20 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit ENERGYLASORA TORIES INC 2393 Saft CreekHi/iway 8260 .RC 5ox3258 Caspe WY82602 To/I Free 885235.0515 307235 0515 Fax 307.234.1639 casperenergylab.com www.energylab.com QA/QC Summary Report Report Date 12/31/08 Work Order C081 10568 EtERGY LAI3ORA TORIES Client Denison Mines USA Corp Project 4th Quarter Groundwater Lite Result Units RL %REC Low Limit Hi9h Limit RPD RPDLImIt QuaJ Method E200.7 Sample ID MB-081229A Calcium Magnesium Potassium Sodium Sample ID LFB-081229A Calcium Magnesium Potassium Sodium ND mg/L ND mg/L ND mg/L ND mg/L Laboratory Fortified Blank 53.2 mg/L 52.8 mg/L 47.2 mg/L 50.6 mg/L Sample ID C08110568-OOIBMS2 Sample Matrix Spike Calcium 590 mg/L Magnesium 349 mg/L Potassium 243 mg/L Sodium 782 mg/L 0.1 0.04 0.02 0.8 Run ICP2-C_081229A 85 125 85 125 85 125 85 125 Run ICP2-081229A 1.0 97 70 130 1.0 101 70 130 1.0 93 70 130 3.8 92 70 130 Magnesium Potassium Sodium Sample Matrix Spike Duplicate 594 mg/L 349 mg/L 241 mg/L 795 mg/L Run ICP2-C_081229A 12/29/08 2002 70 130 0.7 20 70 130 20 70 130 0.7 20 70 130 1.6 20 Sample ID C08110568-OIIBMS2 Sample Matrix Spike Calcium 737 mg/L Run ICP2-C_081229A 1.0 97 70 130 Sample ID Calcium Magnesium Potassium Sodium Sample ID Calcium Magnesium Potassium Sodium Sample ID Calcium Magnesium Potassium Sodium Qualifiers Sample Matrix Spike Duplicate 729 mg/L 432 mg/L 239 mg/L 753 mg/L 299 mg/L 303 mgIL 240 mg/L 1890 mg/L Sample Matrix Spike Duplicate 298 mg/L 301 mg/L 238 mg/L 1880 mg/L Run ICP2-C_081 229A 1.0 94 70 130 1.0 100 70 130 1.0 90 70 130 3.8 94 70 130 Run ICP2-C_081229A 101 70 130 99 70 130 90 70 130 70 130 Run ICP2-C_081229A 100 70 130 98 70 130 89 70 130 70 130 12/29/08 2107 1.1 20 0.2 20 1.9 20 1.1 20 12/29/08 2204 12/29/08 2208 0.3 20 0.8 20 0.9 20 0.6 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 Method Blank Run ICP2-C_081229A 0.50 0.50 0.50 0.77 106 106 94 101 Batch R112823 12/29/08 1130 12/29/08 1134 12/29/08 1958 Sample ID C08110568-OOIBMSD2 Calcium 1.0 99 1.0 101 1.0 92 3.8 98 Magnesium 431 mg/L 1.0 99 70 130 Potassium 244 mg/L 1.0 92 70 130 Sodium 745 mg/L 3.8 91 70 130 C08110568-O1 BMSD2 12/29/08 2103 C08110639.OO6CMS2 Sample Matrix Spike C08110639-OO6CMSD2 1.0 1.0 1.0 3.8 1.0 1.0 1.0 3.8 ND Not detected at the reporting limit EIERGY L/1SORA TORIES ENERGYLAHORATORIES INC p2393 Sail Creek Hiqhway 82501 -AC Box 3258 Caspe WY82502 To//Free 888235.0515 30Z235 0515 Fax 30Z234 1539 casper4energyIab.com wivwenergy/ab.com QAIQC Summary Report Sample ID LRB Arsenic Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Mercury Molybdenum Nickel Selenium Thallium Tin Uranium Vanadium Zinc Selenium Thallium Tin Uranium Vanadium Zinc Method Blank ND mg/L ND mgIL E-05 mg/L ND mg/L ND mg/L 0M002 mg/L ND mgIL ND mg/L SE-OS mg/L E-05 mg/L ND mgIL ND mg/L ND mg/L 0.0004 mg/L 7E-06 mg/L ND mg/L 0.0004 mg/L 0.0425 mg/L 0.0465 mg/L 0.0520 mg/L 0.0538 mg/L 0.0488 mg/L 0.0516 mg/L 4E-05 45-06 35-06 4E-05 5E-06 3E-05 35-06 65-06 IE-05 95-06 3E-05 0.0001 45-06 8E-06 2E-06 3E-05 3E-05 0.010 0.010 0.050 0.010 0.010 0.050 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 Client Denison Mines USA Corp Project 4th Quarter Groundwater Analyte Result UnIts RL %REC Low Limit High Limit RPD RPDLImit Qual Method E200.8 Batch Ri 11247 Report Date 12/31/08 Work Order C081 10568 Run ICPMS4-C_081 1198 Run ICPMS4-C_081 1198SampleIDLFBLaboratoryFortifiedBlank li/i 9/08 1338 11/19/08 1508 11/20/08 0748 Arsenic 0.0508 mg/L 0.0010 102 Beryllium 0.0514 mg/L 0.0010 103 Cadmium 0.0530 mg/L 0.0010 106 Chromium 0.0504 mgIL 0.0010 101 Cobalt 0.0539 mg/L 0.0010 108 Copper 0.0514 mg/L 0.0010 103 Lead 0.0509 mg/L 0.0010 102 Manganese 0.0492 mg/L 0.0010 98 Mercury 0.00514 mg/L 0.0010 102 Molybdenum 0.0509 mg/L 0.0010 102 Nickel 0.0512 mg/L 0.0533 mg/L 0.0517 mg/L 0.0518 mg/L 0.0530 mg/L 0.0503 mg/L 0.0546 mg/L 0.0010 0.0010 0.0010 0.0010 0.00030 0.0010 0.0010 102 107 103 103 106 101 108 Sample ID C08110568-008BMS4 Sample Matrix Spike Arsenic 0.0517 mg/L Beryllium Cadmium Chromium Cobalt Copper Lead Run ICPMS4-C_081 1198 0.0010 103 70 130 Qualifiers 85 70 130 93 70 130 104 70 130 106 70 130 98 70 130 103 70 130 RL Analyte reporting limit ND Not detected at the reporting limit ENERO YLASORA TORIES INC 2393 Salt CreekHiqhway 82601 -AC 8ox3258 Caspa JVY82602 Toll Free 888.2350515 307235.0515 Far 307234.1639 casperenergy/ab.coni wwwenergy/ab.com QAIQC Summary Report Report Date 12/31/08 Work Order C081 10568 EIERGY LJ1ISORA TORIES Client Denison Mines USA Corp Project 4th Quarter Groundwater Sample ID C08110568-OO8BMS4 Sample Matrix Spike Manganese 0.142 mg/L Mercury 0.00488 mgIL Molybdenum 0.0524 mg/I 0.0505 mg/I Selenium 0.0591 mg/L Thallium 0.0412 mg/L Tin 0.0348 mg/I Uranium 0.0843 mg/L Vanadium 0.0532 mg/I Zinc 0.0504 mg/I Arsenic Beryllium Cadmium Chromium Cobalt Copper Lead Manganese Mercury Molybdenum Nickel Selenium Thallium Tin Uranium Vanadium Zinc 0.0520 mg/L 0.0411 mg/L 0.0458 mg/L 0.0518 mg/L 0.0523 mg/L 0.0492 mg/I 0.0495 mg/L 0.138 mg/L 0.00503 mg/L 0.0513 mg/I 0.0504 mg/L 0.0586 mg/I 0.0380 mg/L 0.0364 mg/L 0.0811 mg/I 0.0535 mg/L 0.0505 mg/L Run ICPMS4-C_0811 19B 11/20/08 0748 100 70 130 98 70 130 102 70 130 0.050 101 70 130 0.0010 102 70 130 81 70 130 70 70 130 117 70 130 106 70 130 98 70 130 11/20/08 0754 0.4 20 3.3 20 1.5 20 0.5 20 2.9 20 0.9 20 20 3.1 20 20 20 0.1 20 0.9 20 20 20 3.8 20 20 0.3 20 Chromium Cobalt Copper Lead Manganese Mercury Molybdenum Nickel Selenium Thallium Tin Qualifiers 0.0010 0.010 0.010 Run ICPMS4-C_081 19B 106 70 130 99 70 130 102 70 130 Analyte Result Units RL %REC Low Limit High LImit RPD RPDLimit Qual Method E200.8 Batch Ri 11247 Nickel 0.010 0.0010 0.10 Sample ID C08110568-OO8BMSD4 Sample Matrix Spike Duplicate 0.10 0.10 0.00030 0.10 0.010 0.0010 0.010 0.010 0.050 0.0 10 0.010 0.050 0.010 0.0010 0.10 0.050 0.0010 0.10 0.10 0.00030 0.10 0.010 Run ICPMS4-C_081 11 9B 104 70 130 82 70 130 92 70 130 104 70 130 103 70 130 98 70 130 99 70 130 91 70 130 101 70 130 100 70 130 101 70 130 101 70 130 75 70 130 73 70 130 110 70 130 107 70 130 98 70 130 Sample ID C08110578-002GM54 Sample Matrix Spike Arsenic 0.0535 mg/L Beryllium 0.0494 mg/I Cadmium 0.0510 mg/L 11/20/08 0913 0.0504 mg/L 0.050 101 70 130 0.0527 mg/L 0.010 105 70 130 0.0504 mg/L 0.010 101 70 130 0.0499 mg/L 0.050 100 70 130 0.0760 mg/L 0.010 107 70 130 0.00506 mg/I 0.0010 101 70 130 0.0517 mg/I 0.10 101 70 130 0.0500 mg/I 0.050 100 70 130 0.0525 mg/I 0.0010 105 70 130 0.0489 mg/L 0_la 98 70 130 0.0443 mg/L 0.10 88 70 130 RL Analyte reporting limit ND Not detected at the reporting limit EIERGY ABORA OR/ES ENERO VLABORA TORIES INC 2393 Salt CreekHiqbway 82601 P0 Box 3258 Caspei WY82502 To/I Free 888.235.0515 307.235.0515 Fax 307234.1689 casper4energy/ab.com www.energylab.com QAIQC Summary Report Report Date 12/31/08 Work Order C081 10568 Client Denison Mines USA Corp Project 4th Quarter Groundwater Analyte Result Units RL %REC Low Limit High Limit RPD RPDLImit Qual Method E200.8 Batch Ri 11247 Sample ID C08110578.0020MS4 Sample Matrix Spike Run ICPMS4-C_081 1195 11120/080913 Uranium 0.0624 mg/L 0.00030 108 70 130 Vanadium 0.0504 mg/L 0.10 101 70 130 Zinc 0.0592 mg/L 0.010 113 70 130 Sample ID C08110578402GM5D4 Sample Matrix Spike Duplicate Run ICPMS4-C_0811 19B 11/20/08 0919 Arsenic 0.0535 mg/L 0.0010 106 70 130 20 Beryllium 0.0477 mg/L 0.010 95 70 130 3.5 20 Cadmium 0.0497 mg/L 0.010 99 70 130 2.7 20 Chromium 0.0502 mgfL 0.050 100 70 130 0.3 20 Cobalt 0.0513 mg/L 0.010 102 70 130 2.6 20 Copper 0.0503 mg/L 0.010 101 70 130 0.1 20 Lead 0.0488 mg/L 0.050 98 70 130 20 Manganese 0.0746 mg/L 0.010 105 70 130 1.9 20 Mercury 0.00507 mg/L 0.0010 101 70 130 0.2 20 Molybdenum 0.0500 mg/L 0.10 97 70 130 20 Nickel 0.0502 mg/L 0.050 100 70 130 0.4 20 Selenium 0.0522 mg/L 0.0010 104 70 130 0.5 20 Thallium 0.0481 mg/L 0.10 96 70 130 20 Tin 0.0445 mg/L 0.10 89 70 130 20 Uranium 0.0608 mg/L 0.00030 104 70 130 2.6 20 Vanadium 0.0505 mg/L 0.10 101 70 130 20 Zinc 0.0586 mg/L 0.010 112 70 130 20 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit ENERGYLASORA TORIES INC 2393 Sail Creek Hihway 82601 P0 Box 3258 Caspei WV82602 roll Free 888.235.0515 307.235.0515 Fa 307234.1639 caapercWenergylab.com www.energylab.comEIERCY LASORA Ole/ES QAIQC Summary Report Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Work Order C081 10568 Arialyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method E200.8 Batch RI 11308 Sample ID LRB Method Blank Run ICPMS4-C_081120A 11/20/08 1324 Arsenic ND mg/L 4E-05 Beryllium ND mg/L 4E-06 Cadmium 4E-06 mg/L 3E-06 Chromium ND mg/L 4E-05 Cobalt ND mg/L 5E-06 Copper 0.0001 mg/L 3E-05 Iron ND mg/L 0.0002 Lead ND mg/L 3E-06 Manganese ND mg/L 6E-06 Mercury 6E-05 mg/L E-05 Molybdenum E-05 mg/L 9E-06 Nickel ND mg/L 3E-05 Selenium ND mg/L 0.0001 Silver ND mg/L 7E-06 Thallium ND mg/L 4E-06 Tin 0.0002 mg/L 8E-06 Uranium 4E-06 mg/L 2E-06 Vanadium ND mg/L 3E-05 Zinc SE-OS mg/L 3E-05 Sample ID LEB Laboratory Fortified Blank Run 1CPMS4-C_081120A 11/20108 1331 Arsenic 0.0508 mg/L 0.0010 101 85 115 Beryllium 0.0506 mg/L 0.0010 101 85 115 Cadmium 0.0512 mg/L 0.0010 102 85 115 Chromium 0.0503 mg/L 0.0010 101 85 115 Cobalt 0.0507 mg/L 0.0010 101 85 115 Copper 0.0511 mg/L 0.0010 102 85 115 Iron 1.29 mg/L 0.0010 103 85 115 Lead 0.0501 mg/L 0.0010 100 85 115 Manganese 0.0506 mg/L 0.0010 101 85 115 Mercury 0.00500 mg/L 0.0010 99 85 115 Molybdenum 0.0507 mg/L 0.0010 101 85 115 Nickel 0.0512 mg/L 0.0010 102 85 115 Selenium 0.0503 mg/L 0.0010 101 85 115 Silver 0.0199 mg/L 0.0010 99 85 115 Thallium 0.0498 mg/L 0.0010 100 85 115 Tin 0.0499 mgIL 0.0010 99 85 115 Uranium 0.0480 mg/L 0.00030 96 85 115 Vanadium 0.0501 mg/L 0.0010 100 85 115 Zinc 0.0553 mg/L 0.0010 110 85 115 Sample ID C08110568-004BM54 Sample Matrix Spike Run ICPMS4-C_081 120A 11/20/08 1539 Arsenic 0.0505 mg/L 0.0010 101 70 130 Beryllium 0.0474 mg/L 0.010 95 70 130 Cadmium 0.0477 mg/L 0.010 95 70 130 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit QNQC Summary Report Sample ID C08110568-0048M54 Sample Matrix Spike Chromium 0.0500 mg/L Cobalt 0.0521 mgIL Copper 0.0491 mg/L Iron 1.33 mg/L Lead 0.0511 mg/L Manganese 0.124 mg/L Mercury 0.00478 mg/L Molybdenum 0.0499 mg/L Nickel 0.0493 mg/L Selenium 0.0500 mg/L Silver 0.0119 mg/L Thallium 0.0463 mg/L Tin 0.0364 mg/L Uranium 0.0502 mg/L Vanadium 0.0505 mg/L Zinc 0.0516 mg/L Run ICPMS4-C_0$1 120A 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 0.0010 0.010 0.010 0.050 0.010 0.010 0.030 0.050 0.010 0.0010 0.10 0.050 0.0010 0.010 0.10 0.10 0.00030 0.10 0.010 Run ICPMS4-C_081 120A 100 70 130 93 70 130 96 70 130 98 70 130 101 70 130 99 70 130 99 70 130 103 70 130 79 70 130 98 70 130 95 70 130 98 70 130 100 70 130 69 70 130 93 70 130 78 70 130 106 70 130 101 70 130 104 70 130 11/20/08 1546 0.6 20 1.7 20 0.4 20 20 2.8 20 0.6 20 20 20 8.5 20 2.7 20 20 20 0.3 20 15 20 20 20 6.7 20 20 0.3 20 Sample ID C08110568.014BM54 Sample Matrix Spike Arsenic 0.0518 mg/L Beryllium 0.0469 mg/L Cadmium 0.0493 mg/L Chromium 0.0497 mg/L Cobalt 0.0492 mg/L Copper 0.0488 mg/L RL Analyte reporting limit Spike recovery outside of advisory limits ND Not detected at the reporting limit EfERGY LARORA TORIES ENERO VLABORA TORIES INc 2393 Sail CreekHbway 82601 RC Box 3258 Caspe1 WY82602 Toll Free 888.235.0515 307.235.0515 Fax 307.234.163.9 caspertilenergy/ab.com wwwenergy/ab.co.n Client Denison Mines USA Corp Project 4th Quarter Groundwater Ariaiyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method E200.8 Batch RI 11308 Report Date 12/31/08 Work Order C08I10568 0.050 0.010 0.010 0.030 0.050 0.010 0.0010 0.10 0.050 0.0010 0.010 0.10 0.10 0.00030 0.10 0.010 100 104 98 98 102 100 96 95 99 100 59 93 73 99 101 103 11/20/08 1539 Sample ID C08110568-OO4BMSD4 Sample Matrix Spike Duplicate Arsenic 0.0503 mg/L Beryllium 0.0466 mg/L Cadmium 0.0479 mg/L Chromium 0.0492 mg/L Cobalt 0.0506 mg/L Copper 0.0494 mg/L iron 1.34 mg/L Lead 0.0516 mg/L Manganese 0.114 mg/L Mercury 0.00491 mg/L Molybdenum 0.0500 mgIL Nickel 0.0492 mg/L Selenium 0.0501 mg/L Silver 0.01 38 mg/L Thallium 0.0464 mg/L Tin 0.0388 mg/L Uranium 0.0536 mg/L Vanadium 0.0503 mgIL Zinc 0.0518 mg/L Qualifiers Run ICPMS4-C051120A 11/20/08 1753 0.0010 103 70 130 0.010 94 70 130 0.010 99 70 130 0.050 99 70 130 0.010 98 70 130 0.010 98 70 130 EIERGY LABORA TOR// ENERG VLASORA TORIES INC 2393 Sail Creek Hihway 82601 PC Box3258 Caspec WV82602 Toll Free 8852350515 307.2350515 Fax 307234.1539 casper4energy/ab.com wwwenergy/ab.com QAIQC Summary Report Report Date 12/31/08 Work Order C081 10568 Client Denison Mines USA Corp Project 4th Quarter Groundwater Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method E200.8 Batch R111308 Sample ID C08110568-0148MS4 Sample Matrix Spike Run ICPMS4-C_081 120A 11/20/08 1753 Iron 1.24 mg/L 0.030 99 70 130 Lead 0.0507 mg/L 0.050 101 70 130 Manganese 0.0489 mg/L 0.010 97 70 130 Mercury 0.00477 mg/L 0.0010 95 70 130 Molybdenum 0.0520 mg/L 0.10 97 70 130 Nickel 0.0492 mg/L 0-050 98 70 130 Selenium 0.106 mgIL 0.0010 98 70 130 Silver 0.01 07 mg/L 0.010 53 70 130 Thallium 0.0485 mg/L 0.10 97 70 130 Tin 0.0392 mg/L 0.10 78 70 130 Uranium 0.0592 mg/L 0.00030 105 70 130 Vanadium 0.0502 mg/L 0.10 100 70 130 Zinc 0.0522 mg/L 0.010 104 70 130 Sample ID C08110568-OI4BMSD4 Sample Matrix Spike Duplicate Run 1CPMS4C_081 120A 11/20/08 1759 Arsenic 0.0509 mg/L 0.0010 101 70 130 1.8 20 Beryllium 0.0468 mglL 0.010 94 70 130 0.3 20 Cadmium 0.0490 mg/L 0.010 98 70 130 0.7 20 Chromium 0.0495 mg/L 0.050 99 70 130 20 Cobalt 0.0493 mg/L 0.010 98 70 130 0.2 20 Copper 0.0482 mg/L 0.010 96 70 130 1.2 20 Iron 1.28 mg/L 0.030 102 70 130 3.2 20 Lead 0.0507 mg/L 0.050 101 70 130 0.1 20 Manganese 0.0487 mg/L 0.010 97 70 130 0.4 20 Mercury 0.00482 mg/L 0.0010 96 70 130 0.9 20 Molybdenum 0.0518 mg/L 0.10 96 70 130 20 Nickel 0.0480 mg/L 0.050 96 70 130 20 Selenium 0.109 mg/L 0.0010 104 70 130 2.5 20 Silver 0.0112 mg/L 0.010 56 70 130 4.5 20 Thallium 0.0484 mg/L 0.10 96 70 130 20 Tin 0.0412 mg/L 0.10 82 70 130 20 Uranium 0.0589 mg/L 0.00030 105 70 130 0.6 20 Vanadium 0.0499 mgiL 0.10 100 70 130 20 Zinc 0.0517 mg/L 0.010 103 70 130 20 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit Spike recovery outside of advisory limits Client Denison Mines USA Corp Project 4th Quarter Groundwater Report Date 12131/08 Work Order C081 10568 E1ERCY LA/3ORA TORIES ENERO YLABORA TORIES INC 2393 Sail CreekHbway 8260 P0 Box 3258 Caspe WV82602 Toil Free 885.235.0515 3072350515 Fax 307234.1639 casper@energylab.com www.onergylab.com QAIQC Summary Report Result Units RL %REC Low LImit High Limit RPD RPDLlmit Qual Method E350.1 Batch B_R121014 Sample ID MBLK Nitrogen Ammonia as Method Blank ND mg/L 0.02 Run SUB-B121014 11/19/080905 Sample ID LFB Nitrogen Ammonia as Laboratory Fortified Blank 1.02 mg/L 0.10 103 Run SUB-B121014 90 110 11/19108 0906 Sample ID B08111397-OO3CMS Nitrogen Ammonia as Sample Matrix Spike 1.02 mg/L 0.10 104 Run SUB-B121014 90 110 11/19/08 1213 Sample ID B08111397-OO3CMSD Nitrogen Ammonia as Sample Matrix Spike Duplicate 1.02 mg/L 0.10 104 Run SUB-B121014 90 110 0.4 11/19/08 1214 10 Sample ID C08110568.015D Nitrogen Ammonia as Sample Matrix Spike 0.962 mg/L 0.050 94 Run SUB-B121014 90 110 11/19/08 1156 Sample ID C08110568-015D Nitrogen Ammonia as Sample Matrix Spike Duplicate 0.941 mg/L 0.050 92 Run SUB-B121014 90 110 2.2 11/19/08 1157 10 Method E3$3.2 Batch B_R121093 Sample ID MBLK Nitrogen NitrateNitrite as Method Blank ND mg/L 0.002 Run SUB-B121093 11/20/08 0949 Sample ID LFB Nitrogen NitrateNitrite as Laboratory Fortified Blank 1.02 mg/L 0.050 104 Run SUB-B121 093 90 110 11/20/08 0950 Sample ID B08111424-OOIAMS Nitrogen NitrateNitrite as Sample Matrix Spike 1.04 mg/L 0.050 102 Run SUB-B121093 90 110 11/20/08 1212 Sample ID B08111424-OOIAMSD Nitrogen NitrateNitrite as Sample Matrix Spike Duplicate 1.05 mg/L 0.050 103 Run SUB-B121093 90 110 1.2 11/20/08 1213 10 Sample ID B08111405-OO8CMS Nitrogen NitrateNitrite as Sample Matrix Spike 1.20 mg/L 0.050 95 Run SUB-B121093 90 110 11/20/08 1307 Sample ID B08111405-OO8CMSD Nitrogen NitrateNitrite as Sample Matrix Spike Duplicate 1.17 mg/L 0.050 92 Run SUB-B121093 90 110 2.4 11/20/08 1308 10 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit ENERGYLABORA TORIES INC 2393 Sail Creek fr/ibway 82501 P0 Box 3258 Caspe WY82602 Toll Free 888.235.0515 307.235.0515 Fax 307.234.1639 casperenergy/ab.com wwwenergylab.comEIERCV LABORA TORIES QA/QC Summary Report Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Work Order C081 10568 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLImit Qual Method E900.1 Batch GA-0191 Sample ID MB-GA-0191 Method Blank Run BERTHOLD 770_081 124A 12/02/08 1507 Gross Alpha minus Rn 0.3 pCi/I Sample ID LCS-GA0191 Laboratory Control Sample Run BERTHOLD 770_081124A 12102/08 1507 Gross Alpha minus Rn 26.8 pCi/L 101 70 130 Sample ID C08110568.OO4CDUP Sample Duplicate Run BERTHOLD 770_081124A 12/02/08 1507 Gross Alpha minus Rn 0.756 pCi/L 150 126.9 Activity of original sample is below detection limit duplicate is above detection limit resulting in high RPD Batch is acceptable Sample ID TAP WATER-MS Sample Matrix Spike Run BERTHOLD 770_081 124A 12/02/08 2024 Gross Alpha minus Rn 25.8 pCiIL 97 70 130 Sample ID TAP WATER-MSD Sample Matrix Spike Duplicate Run BERTHOLD 770_081124A 12/02/08 2024 GrossAipha minus RnU 21.7 pCi/L 81 70 130 17 22.5 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit RPD exceeds advisory limit Not detected at minimum detectable concentration ENERG VLABORA TORIES INC 2393 Sail CreekHihway 8250 P0 5ox3258 Caspe WV82502 Toll Free 888.235.0515 307.235.0515 Fax 307234.1539 casperlleneigy/ab.com www.energylab.comEIERGY LA ROSA TORIES QAIQC Summary Report Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Work Order C081 10568 Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method SW8280B Batch RI 11077 Sample ID 111708_LCS_3 Laboratory Control Sample Run SATURNC081 II 7A 11/17/05 1127 Acetone 95 ug/L 20 95 70 130 Benzene 9.2 ug/L 1.0 92 70 130 Carbon tetrachioride 10 ug/L 1.0 102 70 130 Chloroform 9.9 ug/L 1.0 99 70 130 Chloromethane 8.4 ug/L 1.0 84 70 130 mp-Xylenes 19 ug/L 1.0 96 70 130 Methyl ethyl ketone 120 ug/L 20 118 70 130 Methylene chloride 10 ug/L 1.0 100 70 130 Naphthalene 8.9 ug/L 1.0 89 70 130 o-Xylene 9.2 ug/L 1.0 92 70 130 Toluene 9.4 ug/L 1.0 94 70 130 Xyienes Total 28 ug/L 1.0 95 70 130 Surr 2-Dichlorobenzened4 1.0 101 80 120 Surr Dibromofluoromethane 1.0 102 70 130 Sum p-Bromofluorobenzene 1.0 110 80 130 Surr Toluened8 1.0 101 80 120 Sample ID 111708_MBLK_6 Method Blank Run SATURNCA_081 17A 11/17/08 1320 Acetone ND ugh 20 Benzene ND ughL 1.0 Carbon tetrachloride ND ug/L 1.0 Chloroform ND ug/L 1.0 Chloromethane ND ugIL 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 uq/L 1.0 Toluene ND ug/L 1.0 Xyienes Total ND ug/L 1.0 Surr 2.Dichlorobenzene-d4 1.0 96 80 120 Surc Dibromofluoromethane 1.0 114 70 130 Surr p-Bromofiuorobenzene 1.0 96 80 120 Surr Toiuene-d8 1.0 97 80 120 Sample ID C081 10568-OI3EMS Sample Matrix Spike Run SATIJRNCA_081 11 7A 11/18108 0537 Benzene 2100 ug/L 200 107 70 130 Carbon tetrachioride 2100 ug/L 200 107 70 130 Chloroform 3200 ug/L 200 110 70 130 mp.Xylenes 4000 ug/L 200 101 70 130 o.Xylene 2100 ug/L 200 105 70 130 ToIuene 2100 ug/L 200 103 70 130 Xylenes Total 6100 ugIL 200 102 70 130 Sum 2-Dichlorobenzene-d4 200 102 80 120 Surr Dibromofluoromethane 200 102 70 130 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit ENERGYLABORA TORIES INC 2393 Sail CreekHit way 82801 P0 Box 3258 Caspec WV82602 To//Free 888.2350515 307235.0515 Fax 307234.1639 caspereneryy/ab.com www.energylab.com QA/QC Summary Report Report Date 12/31/08 Work Order C081 10568 ENERGY LARORA TORIES Client Denison Mines USA Corn Project 4th Quarter Groundwater rA1e Result Units RL %REC Low Limit High Limit RPD RPDLimIt Qual Method SW82608 Batch Ri 11077 Sample ID C08110568-OI3EMS Surr p-Bromofluorobenzene Surr Toluene-d8 Sample Matrix Spike Run SATURNCA_081 11 7A 200 103 80 120 200 100 80 120 11/18/08 0537 Sample ID C08110568-OI3EMSD Benzene Carbon tetrachloride Chloroform mp-Xylenes o-Xylene Toluene Xyienes Total Sun 2-Dichlorobenzene-d4 Sum Dlbromofluommethane Surr p-Bromofluorobenzene Sum Toluene-d8 Sample Matrix Spike Duplicate 2100 ug/L 2000 ug/L 3000 ug/L 4200 ug/L 2000 ug/L 2100 ug/L 6200 ug/L Run SATURNCA_081 17A 11/18/08 0615 200 104 70 130 2.6 20 200 100 70 130 6.6 20 200 105 70 130 3.4 20 200 104 70 130 2.7 20 200 102 70 130 2.3 20 200 104 70 130 1.5 20 200 103 70 130 20 200 107 80 120 10 200 93 70 130 10 200 104 80 120 10 200 99 80 120 10 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit ENERGYLABORA TORIES INC 2393 Sail Creek Hbway 8260 RU Box 3258 Caspe4c WV82602 roll Free 888.2350515 307235 0515 Fax 307.234.163.9 casperenergy/ab.com wwwenergy/ab.com QAIQC Summary Report Report Date 12/31/08 Work Order C081 10568 EtERGY LABORATORIES Client Denison Mines USA Corp Project 4th Quarter Groundwater Analyte Result Units RL %REC Low Limit High Limit RPD RPDLImit Qua Method SW8260B Batch Ri 11243 Sample ID 11190QLCS_3 Benzene Carbon tetrachioride Chloroform Chloromethane mp-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes Total Surr 2-Dichlorobenzene-d4 Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Laboratory Control Sample ii ug/L 12 ugIL 12 ug/L 10 ug/L 22 ug/L 120 ug/L 12 ug/L 9.7 ug/L 11 ug/L ii ug/L 32 ug/L Run SATURNCA_081 ii9A 1.0 113 70 130 1.0 115 70 130 1.0 119 70 130 1.0 102 70 130 1.0 109 70 130 20 118 70 130 1.0 121 70 130 1.0 97 70 130 1.0 107 70 130 1.0 112 70 130 1.0 108 70 130 1.0 98 80 120 1.0 112 70 130 1.0 104 80 130 1.0 103 80 120 11/19/06 1134 Sample ID 111908_MBLK_6 Benzene Carbon tetrachloride Chloroform Chloromethane mp-Xylenes Methyl ethyl ketone Methylene chloride Naphthalene o-Xylene Toluene Xylenes Total Sum 2-Dichlorobenzene-d4 Surr Dibromofluoromethane Surr p-Bromofluorobenzene Surr Toluene-d8 Method Blank ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L ND ug/L 1.0 1.0 1.0 1.0 1.0 20 1.0 1.0 1.0 1.0 1.0 1.0 106 1.0 104 1.0 101 1.0 95 80 120 70 130 80 120 80 120 Sample ID C08110578-OIIHMS Benzene Carbon tetrachloride Chloroform mp-Xylenes o-Xylene Toluene Xylenes Total Surr 2-Dichlorobenzene-d4 Surr Dibromofluoromethane Sum p-Bromofluorobenzene Surr Toluene-d8 Qualifiers Sample Matrix Spike 220 ug/L 220 ugJL 230 ug/L 190 ug/L 190 ug/L 200 ug/L 380 ug/L Run SATURNCA_081 11 9A 20 109 70 130 20 108 70 130 20 115 70 130 20 94 70 130 20 95 70 130 20 99 70 130 20 94 70 130 20 101 80 120 20 107 70 130 20 96 80 120 20 101 80 120 11/20/08 0708 Run SATIJRNCA_081 19A 11/19/08 1327 RL Analyte reporting limit ND Not detected at the reporting limit ENERGYLASORA TORIES INC p2393 Sail Creek Hqbway 82601 P0 Box 3258 Caspei WY82602 Toll Five 888.235.0515 307235.0515 Fax 307234.1639 casperenergylahcorn www.energylab.comEtERGY LAI3ORA TORIES QA/QC Summary Report Client Denison Mines USA Corp Report Date 12/31/08 Project 4th Quarter Groundwater Work Order C081 10568 Fte Result Units RL %REC Low Limit High Limit RPD RPDLlmlt Qual Method SW8260B Batch Ri 11243 Sample ID C08110578-01 IHMS Sample Matrix Spike Run SATIJRNCA_081 11 9A 11/20/08 0708 Sample ID COOl 10578-01 IHMSD Sample Matrix Spike Duplicate Run SATURNCA_081 11 9A 11/20/08 0746 Benzene 200 ug/L 20 100 70 130 8.8 20 Carbon tetrachloride 210 ug/L 20 106 70 130 1.9 20 Chloroform 230 ug/L 20 114 70 130 1.1 20 mp-Xylenes 190 ug/L 20 93 70 130 0.9 20 o-Xylene 200 ug/L 20 102 70 130 7.7 20 Toluene 200 ug/L 20 99 70 130 0.4 20 Xylenes Total 390 ug/L 20 98 70 130 3.5 20 Surr 2-Dichlorobenzene-d4 20 106 80 120 10 Surr Dibromofluoromethane 20 100 70 130 10 Surr p-Bromofluorobenzene 20 98 80 120 10 Surr Toluene-d8 20 98 80 120 10 Qualifiers RL Analyte reporting limit ND Not detected at the reporting limit to bi CI I CO to Ce Cu I% S Ch a i n of Cu s t o d y an 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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 sn i p p e d Dy ti P s 4Q S \S I co o l r ID s MA T R I X Re c e i p t Te m p oc Co m m e n t s 1$ On Ic No Cu s t o d y Se a l 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 c h ON 1p Hz - f l an /_ 1H 3 o OI 6- b t 3u C /H i p g /2 3 2 - t Q ii // f L p K /1 3 7 - es - c u // . / t iv i r -J // 4 . p g $3 4 wi c /H i f l JO / i -c J rj - 1H Z - f l 1L / - I 9l f l t h J 0 /5 3 7 1O y z 1i c z b- J ci i r s i aJ M z 2 9c c - be Re c e i v e d by Ls b o r a t o i y Da t e T h r i e sig n a t u r e ig n 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 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 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 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 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 . s c 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 F A S F PR I N T - Pr o v I d e as In C a Œi a n e n n i h i a Co m p a n y Na m . e Re p o r t Ma i l Ad d r e s s 0. 0 3c ii j _ I In v o i c e Ad d r e s s cS a c 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 b e 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 A2 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 I W W T P Fo r m a t OS t a t e DL E V E L I V DO t h e r DN 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 N S t a t e Co m p l i a n c e u4 f l c 6r p g p J it . k t St a t e Ye s No Co n t a c t Na m e Ph o n F a x Em a i l Sa m p l e r Pl e a s e Pr i n t J4 n i rn m i 3 /a a r oic e Co 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 jy j y g cj j 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 MS o c c 1 es J c x A fo r ch a r g e s an d co o l e 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 Re c e l p t l e m p 0t h l Cs On i No zo E. I g cu s t o d y s e a l N wg Bo t t l e s co o l e r s In t a c t MA T R I X si g n a t u r e .N Ma t c h 4- w j- t o -k 1 6- Q @_ _ _ 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 1y l 1 L 1 J 29 2M 1 u g c T 3m w 3j 5f l l C o tp 10 Co l l e c t i o n Da t e li / L o X /i - i a jM p g yp V y. 1 3 o /f 1 z - o K Co l l e c t i o n Ti m e gO Li i i 8l O io o Z 7- Y O fl 4 F Cu s t o d y Re c o r d MU S T be Si g n e d Be u i s h e d b n n l Da l e m m e / / g Je i1 / o s sh e d by p1 n t Da S r r i m e ig n a t u r e nt Sig n a t u r e Re c e by pr i n t ate me Sig n a t u r e Sa m p l e Dis p o s a l Ra 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 n t o Da t e i m e Sig n a t u r e 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 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 Pa g e __ _ _ _ of __ _ _ _ Energy Laboratories Inc Workorder Receipt Checklist Denison Mines USA Corp Login completed by Kimberly Humiston Date and Time Received 11/14/2008 945 AM Reviewed by Received by kw Reviewed Date Carrier name Next Day Air Shipping container/cooler in good condition No Custody seals intact on shipping container/cooler No Custody seals intact on sample bottles No chain of custody present No Chain of custody signed when relinquished and received No Chain of custody agrees with sample labels No Samples in proper container/bottle No Sample containers intact No Sufficient sample volume for indicated test No All samples received within holding time No Container/Temp Blank temperature Water VOA vials have zero headspace Water pH acceptable upon receipt Contact and Corrective Action Comments None C081 10568 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 3C On Ice Yes Yes Not Present Not Present Not Present jj No VOA vials submitted Not Applicable NoD No ENERGYLABORA TORIES INC 2393 Sail CreekHibway 82601 RU Box 3258 Casper WV82602 To/I Free 888.2350515 3072350515 Fax 307.234.1639 casperAenergy/ab.com www.energylab.com CLIENT Denison Mines USA Corp Date 31-Dec-08 Project 4th Quarter Groundwater CASE NARRATIVE Sample Delivery Group C08110568 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 TOS 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 CERTFICATIONS USEPA WY00002 FL-DOH NELAC E87641 California 0211 8CA Oregon WY200001 Utah 3072350515 Virginia 00057 Washington Cl 903 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 EIERCY LASORA TORIES ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Landau Project ID 4th Quarter Ground Watter Lab Sample ID L87420-03A Field Sample ID MW-i Collected 11/3/2008 21100 PM Received 11/6/2008 Analyzed 11/7/2008 22200 PM Analytical Results VOLATILES by GC/MS 8260B Units j.tg/L Dilution Factor Compound Reporting Limit Analytical Result Tetrahydrofuran 2.0 2.0 Sun 12-Dichloroethane-d4 81-143 101 Sun 4-Bromofluorobenzene 85-115 104 Sun Dibromofluoromethane 80-124 107 Sun Toluene-d8 88-120 103 ReporiDate 11/10/2008 Page4of7 All analyses applicable to the CWA 5DWA and RCRA are performed ia accordance to NELAC protocols Pertinent samplieg information is located oe the attached COC This report is provided for the eselasive use of the addressee Privileges of subseqaent use of the came of this company or any member of its staff or reprodacooe of this report coenectioa with the advertisement promotios or sale of any prodaet or process or in connection with the re-publication of this report for say purpose other than for the addressee mitt be granted osty on contact this company accepts no rmpoesibitity escept brthe dae performance of mspectioo and/or analysis in good faith and according to the rules of the trade and of science AMERICAN WEST ANALYTICAL Analysis Requested 8260B/5030BLABORATORIES 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 ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Laudau Project ID 4th Quarter Ground Water Lab Sample ID L87554-O1A Field Sample ID MW-2 Collected 11/12/2008 91800 AM Received 11/14/2008 Analyzed 11/22/2008 11500 PM Analytical Results VOLATILES by GC/MS 8260B Units gg/L Dilution Factor Compound Reporting Limit Analytical Result Tetrahydrofliran 2.0 2.0 Sun 12-Dichloroethane-d4 81-143 106 Sun 4-Bromofluorobenzene 85-115 101 Sun Dibromofluoromethane 80-124 101 Sun Toluene-d8 88-120 97.8 Report Date 11/26/2008 Page2ofl7 All analyses applicable to the CWA 5DWA and RCRA are performed in accordance to NELAC protocols Pertinent sampling information is lomted on the attached C0C This report is provided for the exclnsive use of the addressee Privileges of subsequent inn of the name of this company or any member of its staff or reprodaction of this report in coanection with the advertisement promotion or sale of any product or process or in connection with the re-poblication of this report for any purpose other than for the addressee will be granted only on contact This company accepts no rmponsibitity mcept for the doe performance of inspection and/or analysis in good faith and according to the rates of the trade and of science AMERICAN WEST ANALYTICAL Analysis Requested 8260B/5030BLABORATORIES 463 West 3600 South Salt Lake City UT 84115 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awalawal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer 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 ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Landau Project ID 4th Quarter Ground Watter Lab Sample ID L87420-O1A Field Sample ID MW-3 Collected 11/3/2008 85 800 AM Received 11/6/2008 Analyzed 11/7/2008 13800 PM Analysis Requested 8260B/5030B Analytical Results VOLATILES by GC/MS 8260B Units Dilution Factor Analytical Compound Reporting Limit Result Tetrahydroftiran 2.0 2.0 Sun 12-Dichloroethane-d4 81-143 102 Sun 4-Bromofluorobenzene 85-115 102 Sun Dibromofluoromethane 80-124 108 Sun Toluene-d8 88-120 101 Report Date 11/10/2008 Page of All analyses applicable to the CWA 5OWA and RCRA are performed in accordance to NELAC protocols Pertinent sampling information is located on the attached COC This report is provided for the exctosive one of the addressee Privileges of sabseqoent one of the name of this company or any member of its staff or reprodoction of this report in connection with the advertisement promotion or sale of any prodoct or procesn or in connection wsth the re-pobhcatton at tins report for any paepose other than for the addressee will be granted only on contact This company accepts no responsibility escept for the dae performance of inspection and/or analysis in good faith and according to the roles of the trade and of science AMERICAN WEST ANALYTICAL LABORATORIES ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Landau Project ID 4th Quarter Ground Watter Lab Sample ID L87420-02A Field Sample ID MW-3A Collected 11/3/2008 94500 AM Received 11/6/2008 Analyzed 11/7/2008 20000 PM Analysis Requested 8260B/5030B Analytical Results VOLATILES by GC/MS 8260B Units g/L Dilution Factor Compound Reporting Limit Analytical Result Tetrahydrofliran 2.0 2.0 Sum 12-Dichloroethane-d4 81-143 102 Sum 4-Bromofluorobenzene 85-115 103 Sum Dibromofluoromethane 80-124 108 Sum Toluene-d8 88-120 102 Report Date 11/10/2008 Page of All analyses applicable to the CWA 5OWA 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 ate of the addressee Privileges of subsequent one of the name of this company or any member of its stuff or reproduction of this report in coanection with the advertisement promotion or sale of any product or process or in connection wtth there psbtication ol thts report br any putpose other than br the addressee wtll be granted only on contact This company accepts no responstbthty except for the doe performance of tnspecuon and/or analysts in good faith and according to the rules of the trade and of science 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.com Kyle Gross Laboratory Director Jose Rocha QA Officer ORGANIC ANALYSIS REPORT 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awa1awa1-1abs.com Kyle Gross Laboratory Director Jose Rocha QA Officer Client Denison Mines Project ID 4th Quarter Ground Water Lab Sample ID L87554-02A Field Sample ID MW-4 Collected 11/13/2008 83400 AM Received 11/14/2008 Analysis Requested 8260B/5030B Analytical Results Report Date 11/26/2008 Page of 17 Alt ooalyoes appticobte to the CWA 5DWA aod RCRA are performed io accorrtaoce to NELAC protocols Perttnent sampling information is located on the oooched COC Thio report is provided for the exclusive use of the oddressee Privileges of subsequent rise of the came of this compooy or any meotbec of its staff or reprodoctiors of this report in conoectioo with the advertisement promotion or oule of aoy prodoct or process or in connection wish the re-publication of this report for any pucpose other than for the addcessee wilt be grarsted ooiy on contact This company accepts eo responsibility except for the doe performance of iespectioo and/or analysis in good faith and according to the rules of the trade and of science AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 Contact Steve Laudau Analyzed 11/22/2008 14100PM VOLATILES by GC/MS 8260B Units Dilution Factor Compound Reporting Limit Analytical Result Tetrahydrofuran 2.0 2.0 Sun 2-Dichloroethane-d4 81-143 109 Sun 4-Bromofluorobenzene 85-115 100 Sun Dibromofluoromethane 80-124 104 Sun Toluene-d8 88-120 97.9 ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Laudau Project ID 4th Quarter Ground Water Lab Sample ID L87554-03A Field Sample ID MW-S Collected 11/11/2008 123200 PM Received 11/14/2008 Analyzed 11/24/2008 94200 PM Analysis Requested 8260B/5030B Analytical Results VOLATILE by GC/MS 8260B Units Dilution Factor Analytical Compound Reporting Limit Result Tetrahydrofuran 2.0 8.5 Sun l2-Dichloroethane-d4 81-143 95.7 Sun 4-Bromofluorobenzene 85-115 104 Sun Dibromofluoromethane 80-124 98.9 Sun Toluene-d8 88-120 105 Report Date 11/26/2008 Page of 17 All anslyses applicabte to the CWA 5DWA sod RCRA are performed in accordance to NELAC protocols Pertisent sampling infonnalioo is located on the attached COC This report is provided for the exctssive use of the addressee Priviteges of subsequent san of the name of this company or any member of its staff or reproduction of this report in coneecson with the advertisement promotion or sate of any product or process or in connection with the re-pabtication of this report for any psrpose other than for the addressee will be granted onty so contact This company sccepts no respomibility escept for the due performance of inspection and/or analysis in good laith and according to the rules of the trade and of science 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 ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Landau Project ID 4th Quarter Ground Water Lab Sample ID L87554-04A Field Sample ID MW-li Collected 11/10/2008 23700 PM Received 11/14/2008 Analyzed 11/24/2008 100400 Analysis Requested 8260B/5030B Analytical Results VOLATILE by GCIMS 8260B Units jtg/L Dilution Factor na1ytica1 Compound Reporting Limit Result Tetrahydrofliran 2.0 2.0 Sun 12-Dichloroethane-d4 81-143 96.5 Sun 4-Bromofluorobenzene 85-115 i05 Sun Dibromofluoromethane 80-124 97.6 Sun Toluene-d8 88-120 i06 Report Date 11/26/2008 PageS of 17 Alt onalyses applicable to the CWA 5DWA aod RCRA are performed in accordance to NELAC protocols Pertinent sampling information is located on the ottached COC Tisis report io provided for the exctasive use of the addressee Privileges of sobseqneet soc of the name of this company or any member of its staff or reprodoctioo of this report io connection with the advertisement promotion or sate of any product or process or in connection with the re-pahticatios of this report for any purpose other than for the addressee will be granted oniy so costoct This company accepts no responsibility escept for the doe performance of iospectioo and/or analysis ie good faith and according to the rules of the trade and of science 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.com Kyle Gross Laboratory Director Jose Rocha QA Officer ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Laudau Project ID 4th Quarter Ground Water Lab Sample ID L87554-05A Field Sample ID MW-12 Collected 11/11/2008 21500 PM Received 11/14/2008 Analyzed 11/22/2008 44900 PM Analysis Requested 8260B/5030B Analytical Results VOLATILES by GC/MS 8260B Units j.tg/L Dilution Factor Analytical Compound Reporting Limit Result Tetrahydrofuran 2.0 2.0 Sun l2-Dichloroethane-d4 81-143 112 Sun 4-Bromofluorobenzene 85-115 100 Sun Dibromofluoromethane 80-124 102 Sun Toluene-d8 88-120 97.6 ReportDate 11/26/2008 Page6ofl7 All analyses applicable to the CWA SDWA and RCRA are performed in accordance to NELAC protocols Pertinent sampling information is located on the aooched COC This report is provided for the exctosive me of the oddressee Privileges of sabseqoent soc of the come of this company or any member of its staff or reprodoction of this report in eoonectioo with the advertisement promotion or sole of any prodoct or process or in connection with the re-pabticatios os this report br any porpose other then Inc the addressee wilt he granted onty on contort This company accepts no responsibility except for the doe performance of inspection end/or analysis in good faith end according to the rules of the trade end of science 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.com Kyle Gross Laboratory Director Jose Rocha QA Officer ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Laudau Project ID 4th Quarter Ground Water Lab Sample ID L87554-06A Field Sample ID MW-14 Collected 11/10/2008 43 600 PM Received 11/14/2008 Analyzed 11/22/2008 51600 PM Analysis Requested 8260B/5030B Analytical Results VOLATILE by GC/MS 8260B Units jtg/L Dilution Factor Analytical Compound Reporting Limit Result Tetrahy drofuran 2.0 2.0 Sun 12-Dichloroethane-d4 81-143 109 Sun 4-Bromofluorobenzene 85-115 99.7 Sun Dibromofluoromethane 80-124 101 Sun Toluene-d8 88-120 98.6 Report Date 11/26/2008 Page of 17 All aoalysen applicable to the CWA SDWA ood RCRA ace performed in accordance to NELAC protocols Pertiacot sampling ioformation in located on the attached COC This report is provided for the enclasive use of the addrcstro Privileges of subacqecet sac of the name of this company or any member of its staff or rcproductioo of this report io connection with the advertisement promotion or sale of any prodoct or procms or in connection with the ro-poblication of tIns report tsr any purpose other than for the addrrsnro witt be granted oniy on contact This company accepts no responstbitity oncrpt for the doe pertormanco of inspection and/or analysis in good faith and according to the ralm of the trade and of science 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.com Kyle Gross Laboratory Director Jose Rocha QA Officer ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Laudau Project ID 4th Quarter Ground Water Lab Sample ID L87554-07A Field Sample ID MW-15 Collected 11/11/2008 101200AM Received 11/14/2008 Analyzed 11/24/2008 102600 Analysis Requested 8260B/5030B Analytical Results VOLATILES by GCIMS 8260B Units Dilution Factor Analytical Compound Reporting Limit Result Tetrahy drofuran 2.0 2.0 Sun 12-Dichloroethane-d4 81-143 97.6 Sun 4-Bromofluorobenzene 85-115 105 Sun Dibromofluoromethane 80-124 98.7 Sun Toluene-d8 88-120 104 Kyle Gross Laboratory Director Jose Rocha QA Officer Report Date 11/26/2008 Page of 17 Alt aeatysm applicable to the CWA 5DWA ond RCRA are perfomied io accordance to NELAC protocols Pertinent somptieg information io located oo the ottochect COC This report is provided for the esctssive ese of the addressee Privileges of sobseqoent inc of the come of this company or ony member of its staff or reproduciioo of this report connection with the advertisement promotion or sate of soy prodact or process or in connection with the re-pobtication ol this report tor any psrpose other than for the addressee wilt he granted onty on contact This company occepis no responsibitity escept for the doe performance of inspection and/or anatysis in good faith and sccording to the rules of the trade and of science 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.com ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Laudau Project ID 4th Quarter Ground Water Lab Sample ID L87554-08A Field Sample ID MW-17 Collected 11/12/2008 114700 AM Received 11/14/2008 Analyzed 11/22/2008 61000 PM Units gg/L Dilution Factor Compound Reporting Limit Analytical Result Tetrahydrofuran 2.0 2.0 Sun l2-Dichloroethane-d4 81-143 112 Sun 4-Bromofluorobenzene 85-115 98.5 Sun Dibromofluoromethane 80-124 103 Sun Toluene-d8 88-120 97.9 ReportDate 11/26/2008 Page9ofl7 All analyses applicable to the CWA 5DWA and RCRA are perfonoed in accordance to NELAC protocols Pertinent sampling infonnation is located on the attached COC This report is provided for the exclsaive use of the addressee Privileges of sabsnqannt me of the name of this company or any member of its staff or reproduction of this report in connection with the advertisement proatottoa or sale of any prodscl or procesa or in connection sixth there pabheatisn of this report for any parposn other than for the addressee will be granted only on contact this company accepts no responsibility except for the dan pnrfonssance of inspection and/or analysis in good faith and according to the mien of the trade and of science AMERICAN WEST ANALYTICAL Analysis Requested 8260B/5030BLABORATORIES Analytical Results VOLATILES by GC/MS 8260B 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 463 West 3600 South Salt Lake City UT 84115 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-Iabs.com Kyle Gross Laboratory Director Jose Rocha QA Officer ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Landau Project ID 4th Quarter Ground Watter Lab Sample ID L87420-04A Field Sample ID MW-18 Collected 11/3/2008 120200 PM Received 11/6/2008 Analyzed 11/7/2008 24400 PM Analysis Requested 8260B/5030B Analytical Results VOLATILES by GCIMS 8260B Units .tg/L Dilution Factor Compound Reporting Limit Analytical Result Tetrahydrofuran 2.0 2.0 Sun l2-Dichloroethane-d4 81-143 103 Sun 4-Bromofluorobenzene 85-115 103 Sun Dibromofluoromethane 80-124 108 Sun Toluene-d8 88-120 101 Report Date 11/10/2008 Page of Alt analyses applicable to the CWA 5DWA and RCRA are performed in accordance to NELAC protocols Pertinent sampling infonnation is located on the attached COC This report is provided for the exclusive use of the addressee Privileges of subsequent use of the name of this company or any member of its staff or reproduction of this report in connection with the advertisement promotion or sate of any product or process or in connection with the re-publication of ttits report for any purpose other shun for the addressee wilt he granted only on contact This company accepts no responsibility except for the due performance of inspection and/or analysis in good faith and according to the rules of the trade and of science AMERICAN WEST ANALYTICAL LABORATORIES ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Landau Project ID 4th Quarter Ground Watter Lab Sample ID L87420-05A Field Sample ID MW-19 Collected 11/3/2008 93700 AM Received 11/6/2008 Analyzed 11/7/2008 30500 PM Analysis Requested 8260B/5030B Analytical Results VOLATILES by GC/MS 8260B Units j.tg/L Dilution Factor Compound Reporting Limit Analytical Result Tetrahydrofuran 2.0 2.0 Sun 12-Dichloroethane-d4 81-143 102 Sun 4-Bromofluorobenzene 85-115 105 Sun Dibromofluoromethane 80-124 107 Sun Toluene-d8 88-120 103 Report Date 11/10/2008 Page6of7 All analyses applicable te the CWA 5DWA and RCRA are perfornted in accordance to NELAC protocols Pertinent sampling information ia located on the attached COC This report is provided fer the exclosive use of the addressee Privileges of subscqacot inc of the name of this company or any member of its staff or reprodaction of this report in connection with the advertisement promotion or sale of any prodnct or process or in connection with the re-pablicatien of this report for any parpose ether than for the addressee will be granted only on contact This company accepts no responsibility escept for the doe performance of mspcctton and/er analysis in good laith and according to the ralcs of the trade and of science 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.coin Kyle Gross Laboratory Director Jose Rocha QA Officer ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Laudau Project ID 4th Quarter Ground Water Lab Sample ID L87554-09A Field Sample ID MW-20 Collected 11/12/2008 33700 PM Received 11/14/2008 Analyzed 11/22/2008 63700 PM Analysis Requested 8260B/5030B Analytical Results VOLATILES by GC/MS 8260B Units Dilution Factor Analytical Compound Reporting Limit Result Tetrahydroftiran 2.0 2.0 Sun 12-Dichloroethane-d4 81-143 112 Sun 4-Bromofluorobenzene 85-115 98.6 Sun Dibromofluoromethane 80-124 104 Sun Toluene-d8 88-120 96.6 Report Date 11/26/2008 Page 10 of 17 Alt analyses applicable to the CWA 5DWA and RCRA ace performed in accordance to NELAC protocols Pertinent sampling information is located on the aaached COC This report is provided for the exclusive sac of the addressee Privileges of subsequent sac of the name of this company or any member of its staff or reprodoctios of this report in coanectioo with the advertisement promotion or sale of any prodact or process or in connection with the re-publication of this report for any purpose other than for the addressee wilt be granted onty on contact This company accepts no responsibility except for the due performance of inspection and/or analysis in good fmth and according to the rules of the trade and of science 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.com Kyle Gross Laboratory Director Jose Rocha QA Officer ORGANIC ANALYSIS REPORT 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 Denison Mines Contact Steve Laudau Project ID 4th Quarter Ground Water Lab Sample ID L87554-1OA Field Sample ID MW-22 Collected 11/12/2008 25200 PM Received 11/14/2008 Analyzed 11/22/2008 70400 PM Analysis Requested 8260B/5030B Analytical Results VOLATILES by GCIMS 8260B Units gg/L Dilution Factor Compound Reporting Limit Analytical Result Tetrahydrofuran 2.0 2.0 Sun l2-Dichloroethane-d4 81-143 113 Sun 4-Bromofluorobenzene 85-115 99.7 Sun Dibromofluoromethane 80-124 104 Sun Toluene-d8 88-120 97.4 Report Date 11/26/2008 Page 11 of 17 All analyses appltcable to the CWA 5DWA and RCRA are performed in accordance to NELAC protocols Pertinent oampling information is located no the attoched COC This report io provided for the exclusive use of the oddressee Privileges of subsequent use of the name of this company or any member of its staff or reproduction of this report in connection with 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 he granted only en contact This company accepts no responsibility except for the doe performance of inspection and/or analysis in good faith and according to the rules of the trade and of science AMERICAN WEST ANALYTICAL LABORATORIES ORGANIC ANALYSIS REPORT Client DenisonMines ProjectlD 4thQuarterGroundWater Lab SampleID L87453-04A Field SampleID MW-23 Collected 11/5/2008 54000PM Received 11/7/2008 ANALYTICAL LABORATORIES AnalysisRequested 8260B/5030B 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awallawal-labs.coin Analytical Results Report Dale 11/20/2008 PageS of All analyses applicable to the CWA SOWA and RCRA are performed in accordance to NELAC protocols Pertinent sampling information is located on the attached COC Tlsis report is provided for the esclssive use of the addressee Privileges of sabsequent use of the name of this company or any member of its staff or reproduction of this report in connection with the advertisement promotion or sale of any prodact or procms or in connection with there publication of this report for any purpose other than for the addressee will be granted only on contact This company accepts no responsibility escept for the doe performance of inspection and/or analysis in good faith and according to the calm of the trade and of science AMERTCAN WEST Contact SteveLaudau Analyzed 11/18/2008 1054OOP VOLATILES by GC/MS 8260B 463 West 3600 South Salt Lake City UT 84115 Units ggL DilutionFactom Compound ReportingLimit Analytical Result Tetrahydrofran 2.0 2.0 Sun 2-Dicbloroethane-d4 81-143 107 Surr4-Bromofluorobenzene 85-115 105 SurrDibromofluoromethane 80-124 111 SurrToluene-d8 88-120 103 Kyle Gross Laboratory Director Jose Rocha QA Officer ORGANIC ANALYSIS REPORT 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awallawaI-1abs.com Kyle Gross Laboratory Director Jose Rocha QA Officer Client Denison Mines Project ID 4th Quarter Ground Water Lab Sample ID L87554-11A Field Sample ID MW-24 Collected 11/11/2008 25000 PM Received 11/14/2008 Analysis Requested 8260B/5030B Analytical Results Report Date 11/26/2008 Page 12 of 17 All analyses applicable to the CWA SDWA and RCRA ace perfonned in accordance to NELAC protocols Pertinent sampling information is located on the attached COC This rcpart is provided for the exclaaive use of the addressee Privileges of sabsequent me of the name of this company or any member of its staff or rcprodacsion of this report in connection with the advertisement promotion or sale of any product or process or in connection with the re-pablication of this report for any porpose other than for she addressee will be granted only on contacs This company accepts no rmpomibility escept for she dae performance of inspection and/or analysis in good faith and according to the roles of the trade and of science AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 Contact Steve Laudau Analyzed 11/22/2008 73100 PM VOLATILES by GC/MS 8260B Units Dilution Factor Compound Reporting Limit Analytical Result Tetrahydrofuran 2.0 2.0 Sun l2-Dichloroethane-d4 81-143 115 Sun 4-Bromofluorobenzene 85-115 99.0 Sun Dibromofluoromethane 80-124 104 Sun Toluene-d8 88-120 96.6 ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Laudau Project ID 4th Quarter Ground Water Lab Sample ID L87554-12A Field Sample ID MW-25 Collected 11/10/2008 121700PM Received 11/14/2008 Analyzed 11/22/2008 75700 PM Units Dilution Factor Compound Reporting Limit Analytical Result Tetrahydrofliran 2.0 2.0 Sun 2-Dichloroethane-d4 81-143 114 Sun 4-Bromofluorobenzene 85-115 97.1 Sun Dibromofluoromethane 80-124 104 Sun Toluene-d8 88-120 97.4 Kyle Gross Laboratory Director Jose Rocha QA Officer ReportDate 11/26/2008 Pagel3ofl7 All oealyses applicable to the CWA SDWA and RCRA ore performed in accordaece to NELAC protocols Pertinent sampling infomsalion is located oo the attached COC This report is provided for the excissive axe of the addressee Privileges of sobseqoent axe of the same of this company or any member of its staff or reprodsctios of this report in coseection with the advertisemeot promotion or sale of any prodsct or process or in connection with the re-pahbcation of this report for any propose other than for the addressee will be granted only on contact This company accepts oo responsibility escept for the doe performance of inspection and/or analysis in good faith and according to the calm of the trade and of science AMERICAN WEST ANALYTICAL LABORATORIES Analysis Requested 8260B/5030B Analytical Results VOLATILE by GC/MS 8260B 463 West 3600 South Salt Lake City UT 84115 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awalawal-labs.com ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Laudau Project ID 4th Quarter Ground Water Lab Sample ID L87554-13A Field Sample ID MW-26 Collected 11/13/2008 81000 AM Received 11/14/2008 Analyzed 11/22/2008 82500 PM Analysis Requested 8260B/5030B Analytical Results VOLATILES by GCIMS 8260B Units gg/L Dilution Factor Analytical Compound Reporting Limit Result Tetrahydroftiran 2.0 2.0 Sun 12-Dichloroethane-d4 81-143 114 Sun 4-Bromofluorobenzene 85-115 98.6 Sun Dibromofluoromethane 80-124 105 Sun Toluene-d8 88-120 96.9 Report Date 11/26/2008 Page 14 of 17 All analyses applicable to the CWA 5DWA and RCRA are performed in accordance to NELAC protocols Pertinent sampling information it located on the attached COC This report is provided for the exclunive inc of the addressee Privileges of subsequent use of the name of this company or any member of its staff or reproduction of this report in connection with the advertisement promotion or sale of any product or process or in connection with the re-pubttcatton of this report for any purpose other than for the addressee will he grooted only on contact This company accepts no respomibility except for the due performanco of inspection and/or analysis in good faith and according to the rules of the trade and of science 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.com Kyle Gross Laboratory Director Jose Rocha QA Officer ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Landau Project ID 4th Quarter Ground Watter Lab Sample ID L87420-06A Field Sample ID MW-27 Collected 11/3/2008 43200 PM Received 11/6/2008 Analyzed 11/7/2008 32700 PM Analysis Requested 8260B/5030B Analytical Results VOLATILES by GC/MS 8260B Units Dilution Factor Compound Reporting Limit Analytical Result Tetrahydrofran 2.0 2.0 Sun l2-Dichloroethane-d4 81-143 102 Sun 4-Bromofluorobenzene 85-115 104 Sun Dibromofluoromethane 80-124 107 Sun Toluene-d8 88-120 103 Report Date 11/10/2008 Page of All onalyscs applicable to the CWA 5DWA and RCRA are performed in accordaoco 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 sobseqoens soc of the name of this company or any member of its staff or reproduction of this report in connection with the advertisement promotion or sale of any prodact or process or in connection with the re-pabticatron ot this report for any parpoxe other than for the addressee will be granted only oo contact This company accepts no rmpomibility except for the doe performance of inspectioa and/or analysis in good faith sod according to the ralm of the trade sod of science 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.com Kyle Gross Laboratory Director Jose Rocha QA Officer ORGANIC ANALYSIS REPORT Client DenisonMines Contact SteveLaudau ProjectlD 4thQuarterGroundWater Lab Sample ID L87453-O1A Field SampleID MW-28 Collected 11/5/2008938OOAM Received 11/7/2008 Analyzed 11/18/200890500 Units j.tg/L DilutionFactor Compound ReportingLimit Analytical Result Tetrahydrofuran 2.0 2.0 Sun 2-Dichloroethane-d4 81-143 104 Surr4-Bromofluorobenzene 85-115 102 SurrDibromofluoromethane 80-124 112 SurrToluene-d8 88-120 104 Report Date 11/20/2008 Page of All analyses applicable to the CWA SOWA and RCRA are perfonned in accordance to NaLAC protocols Pcrtment sampling infansiation is located on the attached COC This report is provided for the exclasive ase of the addressee Privileges of subsequent use of the name of this company or any member of its staff or reproduction of this report in connection with the advertisement promotion or sale of any prodoct or process or in cosnection with there publication of this report for any purpose other than for the addressee will be grunted only on contact This company acrepts so responsibility except for the doe performance of iespection and/or analysis in good faith and according to the rules of the trade and of science AMERICAN WEST ANALYTICAL LABORATORIES AnalysisRequested 8260B/5030B Analytical Results VOLATILES by GCIMS 8260B 463 West 3600 South Salt Lake City UT 84115 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 Matrix spike recovety indicates matrix interference The method is in control as indicated by the LCS email awa1cawa1-labs.eom Kyle Gross Laboratory Director Jose Rocha QA Officer 463 West 3600 South Salt Lake City UT 84115 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awalawal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer ORGANIC ANALYSIS REPORT Client DenisonMines Contact SteveLaudau ProjectlD 4thQuarterGroundWater Lab Sample ID L87453-02A Field SampleID MW-29 Collected 11/5/2008 113700 AIvI Received 11/7/2008 Analyzed 11/19/2008 1226OOP AnalysisRequested 8260B/5030B Analytical Results VOLATILES by GC/MS 8260B Units jig/L DilutionFactor Compound ReportingLimit Analytical Result Tetrahydrofuran 2.0 2.0 Sun 2-Dichloroethane-d4 81-143 93.6 Surr4-Bromouluorobenzene 85-115 107 SunDibromofluoromethane 80-124 106 SunToluene-d8 88-120 109 Report Date 11/20/2008 Page of All analyses applicable to the CWA 5DWA and RCRA are perfonned iu accordance to NELAC protocolo Pertinent sampling infonnation is located no the attached COC This report io provided for the exclusive use of the addressee Privileges of sabseqaent axe of the came of this company or any member of its staff or reproductino of this report in cooeectioo wtth the advertisement promotioo or sale of any prodact or process or io coenectioo svith the re-publication of this report for any purpose other than for the oddcessee will be granted only on cootact This company accepts on responsibility except for the doe performance of inspectios and/or analysis io good faith and according to the roles of the trade and of science AMERICAN WEST ANALYTICAL LABORATORIES ORGANIC ANALYSIS REPORT Client DenisonMines Contact SteveLaudau ProjectlD 4thQuarterGroundWater LabSamplelD L87453-03A Field SamplelD MW-30 Collected 11/5/2008 15200PM Received 11/7/2008 Analyzed 11/18/2008 103200 AnalysisRequested 8260B/5030B Analytical Results VOLATILES by GC/MS 8260B Units jigfL DilutionFactor Compound ReportingLimit Analytical Result Tetrahydrofuran 2.0 2.0 Sun 2-Dichloroethane-d4 81-143 105 Surr4-Bromofluorobenzene 85-115 103 SurrDibromofluoromethane 80-124 110 SurrToluene-d8 88-120 104 Report Date 11/20/2008 Page of All analyses applicable to the CWA 5DWA and RCRA are performed in accordance to NELAC protocols Pertinent sampling information is located oa the attached COC This report is provided fer the exclusive me ef the addrcssce Prtvileges of subsequent me of the name of this company or any member of its staff or rcprodaction of this report in connection with the advertisement pcomotion or sale of any prodact or process or is comscction with there publication of this report for any purpose other than for the addressee will he granted only on contact This company accepts no renpomibtltty except for the due performance of inspection and/or analysts in good faith and according to the roles of the trade and of science 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 awaliawal-labs.eom Kyle Gross Laboratory Director Jose Rocha QA Officer ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Laudau Project ID 4th Quarter Ground Water Lab Sample ID L87554-14A Field Sample ID MW-31 Collected 11/10/2008 100200 AM Received 11/14/2008 Analyzed 11/22/2008 85200 PM Analysis Requested 8260B/5030B Analytical Results VOLATILES by GCIMS 8260B Units .tg/L Dilution Factor Analytical Compound Reporting Limit Result Tetrahydrofliran 2.0 2.0 Sun l2-Dichloroethane-d4 81-143 114 Sun 4-Bromofluorobenzene 85-115 97.5 Sun Dibromofluoromethane 80-124 105 Sun Toluene-d8 88-120 96.7 Report Date 11/26/2008 Page 15 of 17 All analyses applicable to the CWA 5DWA and RCRA are performed in accordance to NIELAC protocols Pertinent sampling issfonssatioa is located on the attached COC This report is provided for the exclusive axe of the addressee Prtvileges of sobsequmt use of the name of this company or any member of its staff or reproduction of this report connection with the advertisemmt promotion or sale of any product or procms or in connection with the re-publication of this report for any purpose other than for the addressee will be granted only en contact This company accepts no respoesibility except for the due performance of inspecsioa and/or analysis in good faith and according to the rules of the srade and of science 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.com Kyle Gross Laboratory Director Jose Rocha QA Officer ORGANIC ANALYSIS REPORT Client DenisonMines Contact SteveLaudau ProjectlD 4thQuarterGroundWater Lab Sample ID L87453-05A Field SampleID MW-32 Collected 11/5/2008 40700PM Received 11/7/2008 Analyzed 11/18/2008 111500 AnalysisRequested 8260B/5030B Analytical Results VOLATILES by GCIMS 8260B Units jtg1L DilutionFactor Compound ReportingLimit Analytical Result Tetmhydrofuran 2.0 2.0 Sun 2-Dichloroethane-d4 81-143 102 Surr4-Bromofluorobenzene 85-115 101 SurrDthromofluoromethane 80-124 107 SurrToluene-d8 88-120 104 Report Date 11/20/2008 Page of All aealysm applicable to the CWA SDWA and RCRA are performed in accordance to NELAC protocola Pertinent sampling information ia located on the attached COC This report is provided for the esclasive ime of the addrmsee Privileges of sabsequent sac of the name of thia company or any member of its staff or reprodaction of this report in cotmection with the advertisemeot promotion or sate of any product or process or in cosoection with the re-publication of this report for any purpose other than for the addressee will be granted osly on contact This company accepts no rmposoibtlisy escept for the doe performance of inspection and/or analysts in good faith and arcordiag to the aiIm of the trade and of science 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.com Kyle Gross Laboratory Director Jose Rocha QA Officer ORGANIC ANALYSIS REPORT 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Kyle Gross Laboratory Director Client Denison Mines Project ID 4th Quarter Ground Water Lab Sample ID L87554-15A Field Sample ID MW-60 Collected 11/13/2008 74000 AM Received 11/14/2008 Analysis Requested 8260B/5030B Analytical Results Report Date 11/26/2008 Page 16 of 17 All analyses applicable to the CWA 5DWA and RCRA are peefointed in accordance to NELAC protocols Pertinent sampling information is located on the anached COC This report is provided for the exclsaive sac of the addressee Privileges of subseqoent sac of the oame of this company or any member of its staff or reproduction of this report in connectios with the advertisement promotion or sale of any prodont or process or in connection with the re-poblication ot this report for any purpose other than br the addressee will he granted only on contact This company accepts no rmpnnsibility except br the dse performance ot iespectinn and/or anatysis in good faith and according to the calm of the trade and of science AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 Contact Steve Laudau Analyzed 11/22/2008 91900 PM VOLATILES by GCIMS 8260B Units Dilution Factor Compound Reporting Limit Analytical Result Tetrahydrofuran 2.0 7.5 Sun 12-Dichloroethane-d4 81-143 116 Sun 4-Bromofluorobenzene 85-115 98.7 Sun Dibromofluoromethane 80-124 106 Sun Toluene-d8 88-120 95.6 Jose Rocha QA Officer ORGANIC ANALYSIS REPORT Client DenisonMines Contact SteveLaudau ProjectlD 4thQuarterGroundWater Lab Sample ID L87453-06A Field Sample ID MW-65 Collected 11/5/2008 40700PM Received 11/7/2008 Analyzed 11/18/2008 137OOP Units jsgL DilutionFactor Compound ReportingLimit Analytical Result Tetrahydrofuran 2.0 2.4 Sun 2-Dichloroethane-d4 81-143 128 Surr4-Bromofluorobenzene 85-115 99.8 SurrDibromofluoromethane 80-124 113 SurrToluene-d8 88-120 103 Report Date 11/20/2008 Page of All analyses applicable to the CWA 5OWA and RCRA are performed in accordance to NELAC protocots tertioeot sampling ioformatioo is located on the attached COC This report is provided for the exctusive use of the addressee Privileges of sobseqaeot ase of the name of this company or any member of its staff or reprodaction of this report in connection with the advertisement promotion or sate of any prodart or process or in connectioo with the re-pobtication of edo report for any pnrpose other than for the addressee wilt he granted only on cootact This company accepts no responsibility except for the due performance of inspection and/or analyois to good faith and according to the rates of the trade and of science AMERICAN WEST ANALYTICAL LABORATORIES AnalysisRequested 8260B/5030B Analytical Results VOLATILES by GC/MS 8260B 463 West 3600 South Salt Lake City UT 84115 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awalawal-labs.cotn Kyle Gross Laboratory Director Jose Rocha QA Officer ORGANIC ANALYSIS REPORT Client Denison Mines Contact Steve Laudau Project ID 4th Quarter Ground Water Lab Sample ID L87554-16A Field Sample ID MW-70 Collected 11/12/2008 114700AM Received 11/14/2008 Analyzed 11/22/2008 94600 PM Analysis Requested 8260B/5030B Analytical Results VOLATILES by GC/MS 8260B Units Dilution Factor Compound Reporting Limit Analytical Result Tetrahydrofuran 2.0 2.0 Sun 2-Dichloroethane-d4 81-143 116 Sun 4-Bromofluorobenzene 85-115 101 Sun Dibromofluoromethane 80-124 104 Sun Toluene-d8 88-120 96.2 Report Date 11/26/2008 Page 17 of 17 AU analyses applicable to the CWA 5DWA and RCRA are performed in accordance to NELAC protocols Pertinent sampling information is located on the aoached COC This report is provided far the enctasive me af the addressee Privileges of sabseqaent me of the name of this company or any member of its staIr or reprodaction of this report in connection with the advertisement promotios or sate of any prodact or process or in connection with the re-pabtication of this report for any parpose other than for the addressee wilt he granted only on contact This company accepts no rmpomibility escept for the doe performance of inspection and/or analysis in good faith and according to the rates of the trade and of science 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.com Kyle Gross Laboratory Director Jose Rocha QA Officer November 20 2008 AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Steve Laudau Denison Mines 1050 l7thStreet 950 Denver CO 80265 TEL 303 389-4132 FAX 303 389-4125 Salt Lake City UT 84115 RE 4th Quarter Ground Water Dear Steve Laudau Lab Set ID L87453 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awal@awal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer American West Analytical Labs received samples on 11/7/2008 for the analyses presented in the following report All analyses were performed in accordance to National Environmental Laboratory Accreditation Program NELAP protocols unless noted otherwise If you have any questions or concerns regarding this report please feel free to call The abbreviation Sun found in organic reports indicates surrogate compound that is intentionally added by the laboratory to determine sample injection extraction andlor purging efficiency Thank you Approved by Laboratory Director or designee Report Date 11/20/2008 Page of Alt analyses applicable to the CWA 5DWA and RCRA are performed in accordance to NELAC protocols Pertinent sampling infoemation is located on the attached CCtC This report is provided for the exclasive use of the addressee Privileges of subsequent inc of the name of this company er any member of its staff or reproduction of this report in connection with the advertisement promotion or sale of any product or process or in connection with the re-publication at tins report br any purpose other than tar the addemsee wilt be granted only on contact This company accepts no responsibility except for the dae performance of inspection and/or analysis is good faith and according to the roles of the trade and of science Digitally signed by ljI Kyle Gross DN cnKyle Gross 0mAWAL 0uAWAL ross ernailkyleawal-labs corn cmUS Date 2008.11.21 101400 -07OO Am e r i c a n We s t An a l y t i c a l La b s WO R K OR D E R Su m m a r y 07 - N o v - 0 8 Wo r k Or d e r L8 7 4 5 3 Cl i e n t I D DE N 1 0 0 QC L e v e l Pr o j e c t 4t h Qu a r t e r Gr o u n d Wa t e r Lo c a t i o n Co n t a c t St e v e La u d a u Co m m e n t s QC L e v e l Sa m p l e ID Cli e n t Sa mp l e ID Co l l e c t i o n Da t e 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 Sto r a g e L8 7 4 5 3 - O I A MW - 2 8 11 / 5 / 2 0 0 8 9 3 8 0 0 AM 11 / 7 / 2 0 0 8 11 / 2 1 / 2 0 0 8 Aq u e o u s 82 6 0 - W - C U S T O M VO C F r i d g e L8 7 4 5 3 - 0 2 A MW - 2 9 11 / 5 / 2 0 0 8 1 1 3 7 0 0 Al A 11 / 2 1 / 2 0 0 8 82 6 0 - W - C U S T O M VO C F r i d g e L8 7 4 5 3 - 0 3 A MW - 3 0 11 / 5 / 2 0 0 8 15 2 0 0 PM 11 / 2 1 / 2 0 0 8 82 6 0 - W - C U S T O M VO C F r i d g e L8 7 4 5 3 - 0 4 A MW - 2 3 11 / 5 / 2 0 0 8 54 0 0 0 PM 11 / 2 1 / 2 0 0 8 82 6 0 - W - C I J S T O M VO C F r i d g e L8 7 4 5 3 - 0 5 A MW - 3 2 11 / 5 / 2 0 0 8 40 7 0 0 PM 11 / 2 1 / 2 0 0 8 82 6 0 - W - C I J S T O M YO C P r i d g e L8 7 4 5 3 - 0 6 A MW - 6 5 11 / 2 1 / 2 0 0 8 82 6 0 - W - C I J S T O M VO C P r i d g e Pa g e lo f I cj-74f53 Sheetl of DENISON 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 rpalmercdenisonmines.com _______________________________dturkdenisonmines.com Chain of Custody/Sampling Analysis Request Project Samplers Name samplers Signature 4th uartoround Tanner Holliday 11iii5 xwQJ Sample ID Date Collected Time Collected Laboratory Analysis Requested MW-28 MW-29 11/512008 11/5/2008 ca it1 THF THF MW-30 11/5/2008 THF MW-23 11/5/2008 ti4O THF MW-32 11/5/2008 ic7 THF MW-eS 11/5/2008 Gnl THF Please notify Ryan Palmer of Reciept tempature on these samples Immediately Thank you Relinquished BySignature Date/Time tO Received BySignature Date/Time Relinquished BySignatulr Date/Time Received BySignature Dae1J1me %4 cwoJt jtt%5c- Sa m p l e s We r e ft Sh i p p e d By eS OH a n d De l i v e r e d CO C Ta p e Wa s Pr e s e n t on Ou t e r Pa c k a g e Ye s No N/ A th t r o k e n on Ou t e r pa c k a g e Oe s No O N / A Co n t a i n e r Ty p e b4 W A L Su p p l i e d Pl a s t i c No RØ c AW A . L Su p p l i e d Cl e a r Gl a s s AW A L S n p p l i e d Am b e r Gl a s s Am b i e n t Ch i l l e d AW A L Su p l i $ VO A / T O C J T O X Vi a l s Am b e r Cl e a r 4 1 e a d s p a c e No He a d s p a c e te m p e r a t u r e Ph e n t on Sa m p l e Ye s \o No O N / A Re c Br o k e n / L e a k i n g Ye s N/ A No n AW A L Su p p l i o n t a i n e r No t e s Un b r o k e \ o n S a m p l e OY e s Oo ON / A No t e s Pr o p e r l y Pr e s e r v e d Ye s No ON / A No t e s No t e s Re c Wi t h i n Ho l d Ye 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 No No t e s No t e s Bo t t l e Ty p e Pte s e r v a t i v e Al l pH s OK Ss a o i j j pH 2 H 2 5 0 4 CO D S .p H 2 H 2 5 0 4 Cy a n i d e Pr N 1 - 2 a O H Me t a l s pH CI NO - - NO N O pH 2 F1 S O 4 Nu t r i e n t s pH H2 S 0 4$$OG pH C H C L Ph e n o l s Su l f i d e pH 11 2 5 0 4 pH 9N a O H Zn A C TK N pH C 2 H 2 S O 4 TO C jH 2 H 3 P 0 4 T. P 0 4 pH 2 H 2 5 0 4 TP H pH 2 H C L .$ $$ 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 f l 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 o r lid If sa m p l e is no t p r 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 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 m a y be ad j u s t e d at cli e n t re q u e s t La b Se t ID Pr o c e d u r e UPS Internet Shipping Label/Receipt Page of3 UPS Internet Shipping View/Print Label Print the labels Select the Print button on the print dialog box that appears Note If your browser does not support this function select Print from the File menu to print the label Fold the printed label at the dotted line Place the label in UPS Shipping Pouch If you do not have pouch affix the folded label using clear plastic shipping tape over the entire label GErrING YOUR SHXPMENT TO UPS Customers without Daily Pickup Schedule same day or future day Pickup to have UPS driver pickup all of your Internet Shipping packages I-land the package to any UPS driver in your area Take your package to any location of The UPS Store UPS Drop Box UPS Customer Center UPS Alliances Office Depot or Staples or Authorized Shipping Outlet near you Items sent via UPS Return Services5M Including via Ground are accepted at Drop Boxes To find the location nearest you please visit the Find Locations Quick link at ups.com Customers with Daily Pickup Your driver will pickup your shipments as usual FOLD HERE Qcqci cc j-C1 VI -1 rz Co Cl https//www.ups.comluis/createActionOriginPairprintUlSReceiptPOPUP_LEVEL.11/6/2008 November 26 2008 AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 Steve Laudau Denison Mines 1050 17th Street 950 Denver CO 80265 TEL 303 389-4132 FAX 303 389-4125 RE 4th Quarter Ground Water Dear Steve Laudau Lab Set ID L87554 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awalcWawal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer American West Analytical Labs received 16 samples on 11/14/2008 for the analyses presented in the following report All analyses were performed in accordance to National Environmental Laboratory Accreditation Program NELAP protocols unless noted otherwise If you have any questions or concerns regarding this report please feel free to call The abbreviation Sun found in organic reports indicates surrogate compound that is intentionally added by the laboratory to determine sample injection extraction and/or purging efficiency Thank you Approved by Laboratory Director or designee Report Date 11/26/2008 Page of 17 Alt analyses applicable to lhe CWA SDWA and RCRA are perfonned in accordance to NELAC protocols Pertinent sampling information is located on the attached COC This report is provided for the excissive one of the addressee Privileges of sabseqoent axe of the name of this company or any member of its staff or reprodactioo of thio report in connection with the advertisement promotion or sale of any prodoct or process or io connection with the re-pablication of thio report for any porpose other than for the addressee will be granted only on cootact Thit company accepts no responsibility except for the doe performance of inspection and/or analysis in good faith and according to the roles of the trade and of science Digitally signed by Joae Roeha Jose DN oAmerican West Analytical Laboratories ou-QAO com cUS Date 2008.11.26 1425.24 -0700 Am e r i c a n We s t An a l y t i c a l La b s DE N 1 0 0 4t h Qu a r t e r Gr o u n d Wa t e r QC L e v e l QC WO R K OR D E R Su m m a r y Cl i e n t ID Pr o j e c t Co m m e n t s QC Le v e l QC Lo c a t i o w 14 - N o v - 0 8 Wo r k Or d e r L8 7 5 5 4 Co n t a c t St e v e La n d a u -C f Sa m p l e ID Cli e n t Sa m p l e ID Co l l e c t i o n Da t e Da t e Re c e i v e d Da t e Du e Ma t r i x Te s t Co d e Sto r a g e L8 7 5 5 4 - O 1 A MW - 2 11 / 1 2 / 2 0 0 8 91 8 0 0 AM 11 / 1 4 / 2 0 0 3 12 / 2 / 2 0 0 8 Aq u e o u s 82 6 0 - W - C I J S T O M VO C P r i d g e L8 7 5 5 4 - 0 2 A MW - 4 11 / 1 3 / 2 0 0 8 83 4 0 0 AM 12 / 2 / 2 0 0 8 82 6 0 - W - C U S T O M VO C P r i d g c L8 7 5 5 4 - 0 3 A MW - S 11 / 1 1 / 2 0 0 8 12 3 2 0 0 PM 12 / 2 / 2 0 0 8 82 6 0 - W - C U S T O M VO C P r i d g e L8 7 5 5 4 - 0 4 A MW - i l 11 / 1 0 / 2 0 0 8 2 3 7 0 0 PM 12 / 2 / 2 0 0 8 82 6 0 - W - C I J S T O M VO C P r i d g e L8 7 5 5 4 - 0 5 A MW - 1 2 11 / 1 1 / 2 0 0 8 21 5 0 0 PM 12 / 2 / 2 0 0 8 82 6 0 - W - C U S T O M VO C F r i d g e L8 7 5 5 4 - 0 6 A MW - 1 4 11 / 1 0 / 2 0 0 8 4 3 6 0 0 PM 12 / 2 / 2 0 0 8 82 6 0 - W - C U S T O M VO C E r i d g e L8 7 5 5 4 - 0 7 A MW - l S 11 / 1 1 / 2 0 0 8 10 1 2 0 0 AM 12 / 2 / 2 0 0 8 82 6 0 - W - C U S T O M VO C P r i d g e L8 7 5 5 4 - 0 8 A MW - l i 11 / 1 2 / 2 0 0 8 11 4 7 0 0 AM 12 / 2 / 2 0 0 8 82 6 0 - W - C U S T O M VO C F r i d g e L8 7 5 5 4 - 0 9 A MW - 2 0 11 / 1 2 / 2 0 0 8 33 7 0 0 PM 12 / 2 / 2 0 0 8 82 6 0 - W - C L J S T O M VO C P r i d g e L3 7 5 5 4 - I O A MW - 2 2 11 / 1 2 / 2 0 0 8 25 2 0 0 PM 12 / 2 / 2 0 0 8 82 6 0 - W - C U S T O M VO C F r i d g e L8 7 5 5 4 - l MW - 2 4 11 / 1 1 / 2 0 0 8 25 0 0 0 PM 12 / 2 / 2 0 0 8 82 6 0 - W - C U S T O M VO C F r i d g e L8 7 5 5 4 - 1 2 A MW - 2 5 11 / 1 0 / 2 0 0 8 12 1 7 0 0 PM 12 / 2 / 2 0 0 8 82 6 0 - W - C U S T O M VO C F r i d g e L8 7 5 5 4 - 1 3 A MW - 2 6 11 / 1 3 / 2 0 0 8 8 1 0 0 0 AM 12 / 2 / 2 0 0 8 82 6 0 - W - C U S T O M VO C P r i d g e L8 7 5 5 4 - 1 4 A MW - 3 1 11 / 1 0 / 2 0 0 8 10 0 2 0 0 AM 12 / 2 / 2 0 0 8 82 6 0 - W - C U S T O M VO C F r i d g e L8 7 5 5 4 - I S A MW - 6 0 11 / 1 3 / 2 0 0 8 74 0 0 0 AM 12 / 2 I 2 0 0 8 82 6 0 - W - C U S T O M VO C P r i d g e L8 7 5 5 4 - 1 6 A MW - 7 0 11 / 1 2 / 2 0 0 8 11 4 7 0 0 AM 12 / 2 / 2 0 0 8 82 6 0 - W - C I J S T O M VO C E r i d g e Pa g e lo f l 3.40 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 rDaImercdenisonmines.com _______________________________dturktThdenisonmines.com Chain of Custody/Sampling Analysis Request Project Samplers Name SamDlers Sicinature 4th urround Tanner Holliday 3OC Sample ID Date Time Collected Collected Laboratory Analysis Requested MW-2 11/12/2008 918 THF MW-4 11/13/2008 834 THF MW-S 11/11/2008 1232 THF MW-Il 11/10/2008 1437 THF MW-12 11/11/2008 1415 THF MW-14 11/10/2008 1636 THF MW-IS 11/11/2008 1012 THF MW-17 11/12/2008 1147 THF MW-20 11/12/2008 1537 THF MW-22 11/12/2008 1452 THF MW-24 11/11/2008 1450 THF MW-25 11/10/2008 1217 THF MW-26 11/13/2008 810 THE MW-31 11/10/2008 1002 THE MW-60 11/13/2008 740 THE MW-70 11/12/2008 1147 THF Please nofify Ryan Palmer of Reciept tempature on these samples Immediately Thank you /7..cro Sa m p l e s We r e hi p p e d By j0 5 CO C Ta p e Wa s Pr e s e n t on Ou t e r Pa c k a g e Ye s No N/ A Un b r o k e n on Ou t e r pa c k a g e Co n t a i n e r Ty p e WA - 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 AW A t S p p l i e d Am b e r Gl a s s No RØ c Ha n d De l i v e r e d Am b i e n t ah i l l e d Te m p e r a t u r e L/ Ye s No N/ A Pr e s e n t on Sa m p l e Ye s No $N / A Un b r o k e n on Sa m p l e DY e s ON o N/ A No t e s AW A L Su M e d VO A / T O C / T O X Vi a l s Am b e r Cl e a \ O 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 $N O N/ A No t e s No n AW A L Su p p d Co n t a i n e r No t e s Pr o p e r l y Pr e s e r v e d es No O N / A 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 OQ C Ye s No Re c Wi t h i n Ho l d Ye s No No t e s No t e s to . l e Ty p e Pr e s e r v a t i v e Al l pH s OK Am n I i t pH 11 2 5 0 4 CO D pI U c 2 H 2 S O 4 ._ _ _ Cy a n i d e Na O H .- Me t a l s pH 2 1 4 Q __ _ _ _ N0 2 N O 3 pH 2 H 2 S O 4 Nu t r i e n t s pH 11 2 5 0 4 OG pH C H O L Ph e n o l s pH 21 1 2 5 0 4 ._ _ _ _ _ Su l f i d e pH 9N a O I I Zn A C ._ _ _ _ TK N pH 2 H 2 S 0 4 TO C pH 2 H 3 P 0 4 TP O 4 pH 2 H 2 S 0 4 -. - TP H pH C 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 a 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 G 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 La b Se t ID Pr o c e d u r e UPS Internet Shipping Shipment Label Page of UPS Internet Shipping View/Print Label Print the labels Select the Print button on the print dialog box that appears Note If your browser does not support this function select Print from the File menu to print the label Fold the printed label at the dotted line Place the label in UPS Shipping Pouch If you do not have pouch affix the folded label using clear plastic shipping tape over the entire label GETTING YOUR SHIPMENT TO UPS Customers without Daily Pickup Schedule same day or future day Pickup to have UPS driver pickup all of your Internet Shipping packages Hand the package to any UPS driver in your area Take your package to any location of The UPS Store UPS Drop Box UPS Customer Center UPS Alliances Office Depot or Staples or Authorized Shipping Outlet near you Items sent via UPS Return Services5M including via Ground are accepted at Drop Boxes To find the location nearest you please visit the Find Locations Quick link at ups .com Customers with Daily Pickup Your driver will pickup your shipments as usual FOLD HERE cl Lt oo thO2pp rf 00 https//www.ups.com/uis/createActionOriginPairprintUISReceiptPOPUPjEVE..11/13/2008 November 10 2008 AMERICAN WEST ANALYTICAL LABORATORIES 463 West 3600 South Salt Lake City UT 84115 Steve Landau Denison Mines 1050 17th Street 950 Denver CO 80265 TEL 303 389-4132 FAX 303 389-4125 RE 4th Quarter Ground Watter Dear Steve Landau Lab Set ID L87420 801 263-8686 Toll Free 888 263-8686 Fax 801263-8687 email awaliWawal-labs.com Kyle Gross Laboratory Director Jose Rocha QA Officer American West Analytical Labs received samples on 11/6/2008 for the analyses presented in the following report All analyses were performed in accordance to National Environmental Laboratory Accreditation Program NELAP protocols unless noted otherwise If you have any questions or concerns regarding this report please feel free to call The abbreviation Sun found in organic reports indicates surrogate compound that is intentionally added by the laboratory to determine sample injection extraction and/or purging efficiency Thank you Approved by Laboratory Director or designee Report Dale 11/10/2008 Page of All analytes applicable to the CWA 5DWA and RCRA are performed in accordance to NELAC protocott Pertinent sampling information is located on the attached COC Thts report is provided for the exclusive use of the addressee Privilegm of subsequent sac of the name of this company or any member of its staff or reproduction of this report in connection with the advertisement promotion or sale of any product or procms or in connection with the re-pablication of this report for any parpose other than for the addrmsee will be granted only on contact Thit company accepts no rmpontibility except for the due performance of inspection sndlor analysis in good faith and according to the rules of the trade and of science Digitally signed by FKt Kyle Gross DN cnKyle Gross OmAWAL oUAWAL ross emailmkyleawal-labs corn cmUS Date 123453 -07OO Am e r i c a n We s t An a l y t i c a l La b s WO R K OR D E R Su m m a r y 06 - N o v - 0 8 Wo r k Or d e r L8 7 4 2 0 Cl i e n t ID DE N 10 0 QC Le v e l Pr o j e c t 4t h Qu a r t e r Gr o u n d Wa f t e r Lo c a t i o n Co n t a c t St e v e La n d a u Co m m e n t s QC L e v e l Sa m p l e ID Cli e n t Sa m p l e ID Co l l e c t i o n Da t e 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 Sto r a g e L8 7 4 2 0 - O I A MW - 3 11 / 3 / 2 0 0 8 85 8 0 0 AM 11 / 6 / 2 0 0 8 11 / 2 0 / 2 0 0 8 Aq u e o u s 82 6 0 - W - C U S T O M Pu r g e F r i d g e L8 7 4 2 0 - 0 2 A MW - 3 A 11 / 3 / 2 0 0 8 94 5 0 0 AM 11 / 2 0 / 2 0 0 8 82 6 0 - W - C U S T O M Pu r g e F r i d g e L8 7 4 2 0 - 0 3 A MW - I 11 / 3 / 2 0 0 8 21 1 0 0 P M 11 / 2 0 / 2 0 0 8 82 6 0 - W - C U S T O M Pu r g e F r i d g e L8 7 4 2 0 - 0 4 A MW - I S 11 / 3 / 2 0 0 8 1 2 0 2 0 0 PM 11 / 2 0 / 2 0 0 8 82 6 0 - W - C U S T O M Pu r g e F r i d g e L8 7 4 2 0 - 0 5 A MW - 1 9 11 / 3 / 2 0 0 8 93 7 0 0 AIV I 11 / 2 0 / 2 0 0 8 82 6 0 - W - C U S T O M Pu r g e F r i d g e L8 7 4 2 0 - 0 6 A MW - 2 7 11 / 3 / 2 0 0 8 4 3 2 0 0 PM 11 / 2 0 / 2 0 0 8 82 6 0 - W - C U S T O M Pu r g e F r i d g e Pa g e lo f I 4355787774 Inlernatinnal uranium 075444 11-05-7008 1/1 r7425 Al Sheetl of DENISO MINES CHAIN OF CUSTODY Samples Shipped to American West Analytical Lab Contct Ryan Palmer or David Turk 463 West 3600 South Ph 435 678 2221 Salt Lake City Ut 84115 rpalmerdenisonmines.com _____________________________dturkcdenisonmines.com Chain of Custody/Sampling Analysis Request Project Samplers Name Samplers Siqnature 4th quarter ground Tanner Holliday Date Time Sample ID Collected Collected Laboratory Analysis Requested MW-3 1113/2008 858 THF MW-3A 11/3/2008 945 THE MW-I 11/4/2008 1411 THE MW-18 11/4/2008 1202 THE MW-I9 11/4/2008 937 THF MW-27 11/412008 1632 THF Please notify Ryan Palm er of Reciept tempature on these samples Immediately Thank you Relinquished By ignature 42 Reuishe BySignature Date/Time Date/Time Received BySignatureia Received BySignature Date/Time lti Date/Time 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 RØ c WS h i p p e d By k.J K S Pr e s e n t on Ou t e r Pa c k a g e lV t e s No ON / A 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 AW A L Su p p l i e d Cl e a r Gl a s s .. . . . - Am b i e n t Dn b r o ke n on Ou t e r pa c k a g e 9e s No N/ A AW A L Su p p l i e d Am b e r Gl a s s th i l l e d AW A L Su p p l i e d VO A / T O C / T O X VV Am b e r Cl e a r He a d s p a c e Oi e a d s p a c e Te m p e r a t u r e Pr e s e n t on Sa m p j e Ye s Lfl No fl / A Ra e Br o k e n / L e a k i n g Ye s VN o N/ A No n AW A L Su p p l i e d Co 9 S a 1 r No t e s Un b r o k e n on Sa m p l e OY e s ON o h/ A No t e s Pr e s e r v e d SY e s No N/ A No t e s Ra e Wi t h i n Ho l d es 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 No No t e s jt 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 CO D p1 1 2 11 9 5 0 4 pH 2 H 2 S 0 4 ._ _ _ _ Cy a n i d e Me t a l s PH 1 2 N a O H pH 21 1 N 0 3 ._ _ _ _ NO 2 N O Nu t r i e n t s pH 2 H 2 S 0 4 pH 21 1 2 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 J - I Zn A C TK N pH H2 S 0 4 TO C DH 2 H 3 P 0 4 T. P 0 4 pH H2 S O r TP H pH 2 . H C t .. 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 ph in th e ap p r o p r i a t e Fl a 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 ma y be ad j u s t e d at c l i e n t re q u e s t La b Se t ID Sf l b7 n Pr o c e d u r e lj co l u m n ab o v e Quarterly Depth Summary 4th Quarter 2008 WELL DATE DEPTH WELL DATE DEPTH MW-i 11/4/2008 66.65 MW-4 10/14/2008 71.8 MW-2 11/12/2008 109.64 TW4-i 10/14/2008 61.71 MW-3 11/3/2008 83.44 TW4-2 10/14/2008 69.29 MW-3A 11/3/2008 85.42 TW4-3 10/i 4/2008 48.2 MW-4 11/13/2008 71.94 1W4-4 10/14/2008 64.18 MW-5 11/11/2008 106.64 1W4-5 10/i 4/2008 55.3 MW-li 11/10/2008 90.82 TW4-6 10/i 4/2008 72.91 MW-12 11/11/2008 108.51 TW4-7 10/14/2008 68.46 MW-14 11/10/2008 103.7 TW4-8 10/i 4/2008 68.84 MW-IS 11/11/2008 106.5 TW4-9 10/14/2008 53.17 MW-17 11/12/2008 77.62 TW4-10 10/14/2008 55.37 MW-i8 11/4/2008 71.54 TW4-11 10/14/2008 61.15 MW-19 11/4/2008 50.72 TW4-12 10/14/2008 37.39 MW-20 11/12/2008 80.55 TW4-13 10/14/2008 49.3 MW-22 11/12/2008 67.4 1W4-14 10/14/2008 89.81 MW-23 11/5/2008 114.03 TW4-15 10/14/2008 79.81 MW-24 11/10/2008 114.6 TW4-16 10/14/2008 65.13 MW-25 11/10/2008 76.48 TW4-17 10/14/2008 77.19 MW-26 11/13/2008 76.31 TW4-18 10/14/2008 56.07 MW-27 11/4/2008 51.58 TW4-19 10/14/2008 72.94 MW-28 11/5/2008 78.08 TW4-20 10/14/2008 90.02 MW-29 11/5/2008 102.91 1W4-21 10/14/2008 61.98 MW-30 11/5/2008 77.82 TW4-22 10/14/2008 55.98 MW-31 11/10/2008 69.98 TW4-23 10/14/2008 67.8 MW-32 11/5/2008 76.83 TW4-24 10/14/2008 56.71 TW4-25 10/14/2008 50.79 PIEZ-l 11/25/2008 63.41 PIEZ-2 11/25/2008 15.37 PIEZ-3 11/25/2008 34.29 PIEZ-4 11/25/2008 52.15 PIEZ-5 11/25/2008 46.82 It \\ \\ C- SC A L E IN FE E T 42 -- 30 0 0 EX P L A N A T I O N MW - 2 0 54 8 0 PC - I 55 9 2 MW - 3 1 55 4 6 pe r c h e d mo M o r i n g we l sh o w i n g ele v a t i o n in te e s ar n s l te m p o r a r y pe r c h e d mo n i t o r i n g we l l sh o w i n g ele v a t i o n in fe e t am s l pe r c h e d pie z o 8 n e t e r sh o w i n g ele v a t i o n hi fe e t a n i s i pe r c h e d mo M o r i n g we l l in s t a l l e d Ap I l 20 0 5 sh o w i n g ele v a t i o n hi fe e t am s i Mw _ n S5 4 5 0 // // // // te m p o r a r y pe r c h e d mS t o r i n g we l l in s t a l l e d 45 5 7 3 Ap r i l 20 0 5 sh o w i n g ele v a t i o n in fe e t am s i te m p o r a r y pe r c h e d mo n i t o r i n g we l l i n s t a l l e d 55 4 0 Ma y 20 0 7 sh o w i n g ap o x i m a t e ele v a t i o n in fn a rn n c l NO T E S Lo c a t i o n s an d el e v a t i o n s fo r TW 4 - 2 3 T W 4 - 2 4 an d TW 4 - 2 5 ar e ap p r o x i m a t e // // HY D R O GE O CH E M IN C KR I G E D 4t h QU A R T E R 20 0 8 WA T E R LE V E L S WH I T E ME S A SI T E AP P R O V E D DA T E RE F E R E N C E ss I FG U R E HJ 7 1 80 0 0 / f e b O 9 / w l l 10 8 . s r f Steve Landau From Steve Landau Sent Tuesday February 24 2009 256 PM To Dane Finerfrock Subject 4th Quarter 2008 CSV Groundwater Files Attachments C081 00775.csv C081 10031 .csv C081 1021 6.csv C081 0279.csv Coal 0568.csv C081 20444.csv Dear Mr Finerirock Attached to this email is an electronic copy of quarterly and quarterly accellerated laboratory results for groundwater monitoring conducted under the Groundwater Discharge Permit for the White Mesa Mill during the Quarter 2008 in Comma Separated Value CSV format Monthly CSV data for the October and December samplings are attached as well Yours truly Steven Landau