2009-05-19_REVISION - M1977416 (37)

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ENERGYLABORATOR/ES, INC. • 2393 Salt Creek Highway (82601) • P. O. Box 3258 • Casper, WY82802 Toll Free 888 235 0515 - 307 235 0515 • Fax 307.234.1639 • caspergenergy/ab.com • www.energy/ab.com QA/QC Summary Report nt: Denison Mines (USA) Corp Report Date: 04/02/09 ect: West Sunday Mine Work Order: C09030572 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLlmit Qual Method: E200.8 Batch: R116155 Sample ID: C09030590-006BMS4 20 Sample Matrix Spike Run: ICPMS2-C090320A 03/20/0915:38 Aluminum 0.465 mg/l. 0.10 93 70 130 Antimony 0.527 mg/l. 0.050 105 70 130 Arsenic 0.513 mg/L 0.0010 99 70 130 Barium 0.574 mg/l. 0.10 100 70 130 Beryllium 0.475 mg/L 0.010 95 70 130 Cadmium 0.489 mg/L 0.010 98 70 130 Chromium 0.464 mg/L 0.050 92 70 130 Cobalt 0.463 mg/L 0.010 92 70 130 Copper 0.450 mg/l. 0.010 89 70 130 Lead 0.498 mg/l. 0.050 100 70 130 Manganese 0.558 mg/L 0.010 93 70 130 Mercury 0.0511 mg/L 0.0010 102 70 130 Molybdenum 0.520 mg/L 0.10 103 70 130 Nickel 0.464 mg/l. 0.050 91 70 130 Selenium 0.491 mg/L 0.0010 97 70 130 Silver 0.106 mg/L 0.010 53 70 130 S Thallium 0.498 mg/L 0.10 100 70 130 Uranium 0.509 mg/L 0.00030 101 70 130 adium 0.480 mg/L 0.10 95 70 130 0.490 mg/L 0.010 90 70 130 Sample ID: C09030590-00SOMSD 220 Sample Matrix Spike Duplicate Run: ICPMS2-C 090320A 03/20/0915:45 Aluminum 0.475 mg/L 0.10 95 70 130 2.1 20 Antimony 0.528 mg/L 0.050 106 70 130 0.4 20 Arsenic 0.516 mg/L 0.0010 99 70 130 0.5 20 Barium 0.577 mg/L 0.10 101 70 130 0.5 20 Beryllium 0.484 mg/L 0.010 97 70 130 1.9 20 Cadmium 0.492 mg/L 0.010 98 70 130 0.6 20 Chromium 0.474 mg/L 0.050 94 70 130 2 20 Cobalt 0.472 mg/L 0.010 94 70 130 1.9 20 Copper 0.458 mg/L 0.010 91 70 130 1.8 20 Lead 0.499 mg/l. 0.050 100 70 130 0.1 20 Manganese 0.569 mg/L 0.010 95 70 130 2 20 Mercury 0.0509 mg/l. 0.0010 102 70 130 0.5 20 Molybdenum 0.520 mg/L 0.10 103 70 130 0 20 Nickel 0.467 mg/L 0.050 92 70 130 0.7 20 Selenium 0.491 mg/l. 0.0010 97 70 130 0 20 Silver 0.129 mg/l. 0.010 65 70 130 20 20 S Thallium 0.499 mg/L 0.10 100 70 130 0.2 20 Uranium 0.511 mg/L 0.00030 101 70 130 0.3 20 Vanadium 0.490 mg/L 0.10 97 70 130 2.1 20 Zinc 0.492 mg/L 0.010 91 70 130 0.5 20 RE_- Analyte reporting limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration S - Spike recovery outside of advisory limits.