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ENERGYLASOR470ANE3% 1Na - 23193 Sa& Cwelr H1ghway (82801 - P.O. Box 3268 -Casper, WY&1W <br />To//Fmee 888.235.0515 • 307.235.0515 • Fax 307.234.18JY • carper@eneigy/ab.cnm - www.energy/ab.com <br />LABORATORY ANALYTICAL REPORT <br />Client: Denison Mines (USA) Corp Report Date 01/28/09 <br />Project: Sunday Mines Attenuation Tests - 68838 Collection Date: 12131/08 09:00 <br />Lab ID: C09010008-003 DateReceived: 01/02109 <br />Client Sample ID: CDM-DEN-003 Matrix: Aqueous <br /> MCIJ <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date I By <br />MAJOR IONS <br />Calcium 63 mg/L 1 E200.7 01/1310917:54 / cp <br />Magnesium 30 mg/L 1 E200.7 01/1310917:54 / cp <br />Potassium 4 mg/t. 1 E200.7 0111310917:54 / cp <br />Silicon 3.6 mg/L 0.1 E200.7 011130117:54 / cp <br />Sodium 29 mg/L D 6 E200.7 01/1310917:54 / cp <br />METALS - DISSOLVED <br />Antimony ND mg/L 0.05 E200.8 01/08/0919:53 / is <br />Arsenic 0.053 mg/l. 0.001 E200.8 01/08/0919:53 / is <br />Molybdenum 0.4 mg/L 0.1 E200.8 01/0610919:53 / is <br />Selenium 0.136 mg/L 0.001 E200.8 01 /08/0919:53 / is <br />Uranium 0.0453 mg/L 0.0003 E200.8 01106/0919:53 / is <br />Vanadium 0.4 mg/L 0.1 E200.8 0110810919:53 / is <br />RADIONUCLIDES - DISSOLVED <br />Gross Alpha 34.7 pCUL E900.0 01/19/09 22:45 / cgr <br />Gross Alpha precision (t) 3.0 pCUL E900.0 01/19109 22:45 / cgr <br />Gross Alpha MDC 2.0 pCUL E900.0 01/19/09 22:451 cgr <br /> <br />Gross Beta <br />11.0 <br />pCUL <br />E900.0 . <br />01/19109 22:45 / cgr <br />Gross Beta precision (t) 1.9 pCUL E900.0 01/19109 22:45 / cgr <br />Gross Beta MDC 2.9 pCUL E900.0 01119109 22:45 / cgr <br />Report RL - Anatyfre reporting limit <br />Definitions: QCL - Quality control limit. <br />MDC - Minimum detectable concentration <br />MCL - Maximum contaminant level. <br />ND - Not detected at the reporting knit. <br />D - RL increased due to sample matrix inbAarence. <br />