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ENERGYLABORATOR/ES, /NC. • 2393Sa/1CreekHighway(82601) • P.O. Box3258 • Casper WY82602 <br />Toll Free 888 235 0515 • 307 235 051.5 • ' Fax 307.234.1639 • casper(genergy/ab.com • www energy/ab. com <br />LABORATORY ANALYTICAL REPORT <br />Client: Denison Mines (USA) Corp <br />Project: Sunday Mines Attenuation Tests - 68838 <br />Lab ID: C08120940-006 <br />Client Sample ID: CDM-DEN-026 <br />Report Date: 01/28/09 • <br />Collection Date: 12/30/08 08:00 <br />Date Received: 12/31/08 <br />Matrix: Aqueous <br />MCLI <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date I By <br />MAJORIONS <br />Calcium <br />Magnesium <br />Potassium <br />Silicon <br />Sodium <br />METALS - DISSOLVED <br />Antimony <br />Arsenic <br />Molybdenum <br />Selenium <br />Uranium <br />Vanadium <br />68 mg/L 1 E200.7 01/13/09 17:42 / cp <br />16 mg/L 1 E200.7 01 /13/09 17:42 / cp <br />33 mg/L 1 E200.7 01 /13/09 17:42 / cp <br />2.5 mg/L 0.1 E200.7 01/13109 17:42 / cp <br />382 mg/L D 8 E200.7 01 /13/09 17:42 / cp <br />ND mg/L 0.05 E200.8 01/02/09 01:20 / is <br />0.041 mg/L 0.001 E200.8 01 /02/09 01:20 / is <br />0.9 mg/L 0.1 E200.8 01/02/09 01:20 / is <br />0.359 mg/L 0.001 E200.8 01/02/09 01:20 / is <br />0.0754 mg/L 0.0003 E200.8 01/02/09 01:20 / is <br />1.3 mg/L 0.1 E200.8 01/02/09 01:20 / is <br />• <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. •