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ENERGYLABORATORIES, INC •2393Salt Creek Highway(6260I- P.O. Box 3258 - Casper, WY 82602 <br />roll Free 888.235.0515 - 307.235.0515 - Fax 307.234.1639 - casperCC4?energy/ab.com - www..energylab.com <br />LABORATORY ANALYTICAL REPORT <br />Client: Denison Mines (USA) Corp Report Date: 01/26/09 <br />Project: Sunday Mines Attenuation Tests - 68838 Collection Date: 01/01/09 09:00 <br />Lab ID: C09010051-001 DateReceived: 01/05/09 <br />Client Sample ID: CDM-DEN-006 Matrix: Aqueous <br /> <br />Analyses <br />Result <br />Units <br />Qualifiers RL MCL/ <br />QCL Method <br />Analysis Date I By <br />MAJOR IONS <br />Calcium 37 mg/L 1 E200.7 01/13/09 18:59 / cp <br />Magnesium 22 mg/L 1 E200.7 01/13/09 18:59 / cp <br />Potassium 12 mg/L 1 E200.7 01/13/0918:59 / cp <br />Silicon 5.1 mg/L 0.1 E200.7 01/13/09 18:59 / cp <br />Sodium 162 mg/L D 8 E200.7 01/13/09 18:59 / cp <br />METALS - DISSOLVED <br />Antimony ND mg/L 0.05 E200.8 01108/09 18:49 / sml <br />Arsenic 0.032 mg/l- 0.001 E200.8 01/08/09 18:49 / sml <br />Molybdenum 1.5 mg/L 0.1 E200.8 01/08/09 18:49 / sml <br />Selenium 3.17 mg/L 0.001 E200.8 01/08109 18:49 / sml <br />Uranium 0.0044 mg/L 0.0003 E200.8 01108/09 18:49 / sml <br />Vanadium 2.1 mg/L 0.1 E200.8 01/08/09 18:49 / sml <br />RADIONUCLIDES - DISSOLVED <br />Gross Alpha 6.3 pCi/L E900.0 01/21/09 10:461 cgr <br />Gross Alpha precision (t) 3.0 pCi/L E900.0 01/21/09 10:46 / cgr <br />Gross Alpha MDC 4.2 pCi/L E900.0 01/21/09 10:46 / cgr <br />• <br />Gross Beta 20.2 pCi/L E900.0 01/21/09 10:46 / cgr <br />Gross Beta precision (t) 3.1 pCi/L E900.0 01/21/09 10:46 / cgr <br />Gross Beta MDC 4.6 pCi/L E900.0 01/21/09 10:46 / cgr <br />Report RL - Analyte reporting limit. MCL - Maximum contaminant level. <br />Definitions: QCL - Quality control limit. ND - Not detected at the reporting limit. <br />0 MDC - Minimum detectable concentration D - RL increased due to sample matrix interference.