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ENERCYLABORATORIES, INC. • 2393 Sa/t Creek Hghrvay (82601 PO0..' Bok 3258 • Casper WY82602 <br />roll Free 888.235.0515 - 307.235.0515 • Fax "307234 1639 casperenergylab.'com • www.energy/ab.com <br />ARINIMEW <br />LABORATORY ANALYTICAL REPORT <br />Client: Denison Mines (USA) Corp Report Date: 01/28/09 <br />Project: Sunday Mines Attenuation Tests - 68838 Collection Date: 12/31/08 09:00 <br />Lab ID: C09010008-008 DateReceived: 01/02/09 <br />Client Sample ID: CDM-DEN-013 Matrix: Aqueous <br /> <br />Analyses <br />Result <br />Units <br />Qualifiers RL MCL/ <br />QCL Method <br />Analysis Date / By <br />MAJOR IONS <br />Calcium 53 mg/L 1 E200.7 01/13/09 18:38 / cp <br />Magnesium 22 mg/L 1 E200.7 01/13/09 18:38 / cp <br />Potassium 14 mg/L 1 E200.7 01/13/09 18:38 / cp <br />Silicon 2.3 mg/L 0.1 E200.7 01 /13/09 18:38 / cp <br />Sodium 159 mg/L D 8 E200.7 01/13/09 18:38 / cp <br />METALS - DISSOLVED <br />Antimony ND mg/L 0.05 E200.8 01/06/09 20:54 / is <br />Arsenic 0.010 mg/L 0.001 E200.8 01/06/09 20:54 / is <br />Molybdenum ND mg/L 0.1 E200.8 01/06109 20:54 / is <br />Selenium 0.491 mg/L 0.001 E200.8 01 /06109 20:54 / is <br />Uranium 0.0063 mg/L 0.0003 E200.8 01/06/09 20:54 / is <br />Vanadium 0.2 mg/L 0.1 E200.8 01/06/09 20:54 / is <br />RADIONUCLIDES - DISSOLVED <br />Gross Alpha 7.0 pCi/L E900.0 01/19/09 22:45 / cgr <br />Gross Alpha precision (t) 2.8 pCUL E900.0 01/19/09 22:45 / cgr <br />Gross Alpha MDC 3.7 pCi/L E900.0 01119/09 22:45 / cgr • <br />Gross Beta 11.0 pCUL E900.0 01/19/09 22:45 / cgr <br />Gross Beta precision (t) 2.7 pCUL E900.0 01/19/09 22:45 / cgr <br />Gross Beta MDC 4.2 pCUL E900.0 01/19/09 22:45 / 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 />MDC - Minimum detectable concentration D - RL increased due to sample matrix interference.