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ENEROYLABORA7DR/EA /NC. • ..3.43 S' Cra *Hig/nvay (82601)) - P.O. Box3258 - Casper WY82802 <br />To//Fme 888.2.25.0515 - 3072:150515 -Fax 7.234.1639 - casper@energ)lab.com • www.energAb.com <br />LABORATORY ANALYTICAL REPORT <br />Client: Denison Mines (USA) Corp <br />Project: Sunday Mines Attenuation Tests .- 688311 <br />Lab ID: C09010008-009 <br />Client Sample ID: CDM-DEN-014 <br />Report Date: 01/28/09 <br />Collection Date 12131/08 09:00 <br />DateReceived: 01/02/09 <br />Matrix: Aqueous <br />Mcu <br />Analyses Result Units QualiRers RL QCL Method Analysis Date I By <br />MAJOR IONS <br />Calcium 52 mg/l. <br />Magnesium 20 mg/l. <br />Potassium 18 rng/L <br />Silicon 2.3 mg/L <br />Sodium 164 mg/l. <br />METALS - DISSOLVED <br />Antimony NO mg/l. <br />Arsenic 0.012 mg/l. <br />Molybdenum NO mg/t. <br />Selenium 0.505 mg/L <br />Uranium 0.0083 mg/l. <br />Vanadium 0.4 mg/t. <br />RADIONUCLIDES - DISSOLVED <br />Gross Alpha 10.7 pCVL <br />Gross Alpha precision (t) 3.0 pCVL <br />Gross Alpha MDC 3.7 pCVL <br />Gross Beta 8.7 pCVL <br />Gross Beta precisions (t) 2.6 pCi/L <br />Gross Beta MDC 4.2 pCi/L <br />1 E200.7 01/13/0918:42 / cp <br />1 E200.7 01/13109 18:42 / cp <br />1 E200.7 01/1310918:42 / cp <br />0.1 E200.7 01/1310918:42 / cp <br />D 8 E200.7 01/13/0918:42 / cp <br />0.05 E200.8 0110809 21:00 / is <br />0.001 E200.8 01/060121:00 / is <br />0.1 E200.8 01A)6= 21:00 / is <br />0.001 E200.8 01/08/09 21:00 / is <br />0.0003 E200.8 01/0809 21:00 / is <br />0.1 E200.8 01108109 21:00 / is <br /> E900.0 01/19/09 22744 / ogr <br /> E9W.0 01/19!09 22:44 / cgr <br /> E900.0 01/1909 22:44 / cgr <br /> E900.0 01/19/09 22:441 egr <br /> E900.0 01119109 22:44 / cgr <br /> E900.0 01/19/09 22:44 / cgr <br />Report RL - Ana" reporting limit. <br />Definitions: QCL - Quality control limit <br />MDC - Minimum detectable concentration <br />MCL - Maximum contaminant level. <br />NO - Not detected at the reporting limit. <br />D - RL increased due to sample matrix interference. <br />• <br />0