2009-05-19_REVISION - M1977416 (37)

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ENERGYL4BORAWR/ES, INC. • 2393 Salt Creek Highway (82801) • P.O. Box 3258 • Casper, WY82602 Toll Free 888 235 0515 • 307.235.0515 • Fax 307.234.1839 • casper energylab.com • www.energylab.com QA/QC Summary Report nt: Denison Mines (USA) Corp Report Date: 04/02/09 Sect: West Sunday Mine Work Order: C09030572 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method: E200.8 Batch: R116115 Sample ID: C09030572-003BMS4 19 Sample Matrix Spike Run: ICPMS2- 090319A 03/19/0916:52 Barium 0.531 mg/L 0.10 82 70 130 Beryllium 0.451 mg/L 0.010 90 70 130 Cadmium 0.487 mg/L 0.010 97 70 130 Chromium 0.496 mg/L 0.050 90 70 130 Cobalt 0.487 mg/L 0.010 82 70 130 Copper 0.482 mg/L 0.010 87 70 130 Lead 0.517 mg/L 0.050 103 70 130 Manganese 0.517 mg/L 0.010 45 70 130 S Mercury 0.0522 mg/L 0.0010 104 70 130 Molybdenum 0.541 mg/L 0.10 54 70 130 S Nickel 0.477 mg/L 0.050 91 70 130 Selenium 0.478 mg/L 0.0023 85 70 130 Silver 0.143 mg/L 0.010 72 70 130 Thallium 0.518 mg/L 0.10 104 70 130 Uranium 0.511 mg/L 0.00030 99 70 130 Vanadium 0.509 mg/L 0.10 93 70 130 Zinc 0.494 mg/L 0.010 83 70 130 Sample ID: C09030572-003BMSD 19 Sample Matrix Spike Duplicate Run: ICPMS2-C090319A 03/19/0916:59 Wony 0.529 mg/L 0.050 103 70 130 0.5 20 ?ll?enic 0.501 mg/L 0.0010 94 70 130 0.3 20 Barium 0.530 mg/L 0.10 82 70 130 0.1 20 Beryllium 0.453 mg/L 0.010 91 70 130 0.5 20 Cadmium 0.490 mg/L 0.010 98 70 130 0.5 20 Chromium 0.498 mg/L 0.050 91 70 130 0.4 20 Cobalt 0.485 mg/L 0.010 82 70 130 0.4 20 Copper 0.478 mg/L 0.010 86 70 130 0.7 20 Lead 0.515 mg/L 0.050 103 70 130 0.4 20 Manganese 0.516 mg/L 0.010 44 70 130 0.2 20 S Mercury 0.0517 mg/L 0.0010 103 70 130 1 20 Molybdenum 0.549 mg/L 0.10 56 70 130 1.5 20 S Nickel 0.471 mg/L 0.050 90 70 130 1.3 20 Selenium 0.472 mg/L 0.0023 84 70 130 1.2 20 Silver 0.147 mg/L 0.010 74 70 130 2.8 20 Thallium 0.510 mg/L 0.10 102 70 130 1.6 20 Uranium 0.510 mg/L 0.00030 98 70 130 0.3 20 Vanadium 0.512 mg/L 0.10 93 70 130 0.6 20 Zinc 0.489 mg/L 0.010 82 70 130 1.1 20 I1ERFAnalyte reporting limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration S - Spike recovery outside of advisory limits.