2009-05-19_REVISION - M1977416 (37)

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ENERGYLABORATOA/E8 INC • 2393 Sa/l Cree,(r Highway (82601 • P. Q. Box 9258 - Gaspe,; W) 182604" TollFme 898.235:0515 • 307.235.0515 • Fax 307.234.1639 - casper?energylab,com •,vww.eneyylad:com AAM..mv QA/QC Summary Report W nt: Denison Mines (USA) Corp ject: West Sunday Monitoring Welts Report Date: 03/18/09 Work Order. C09020884 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDUmit Qual I Method! E20o_R -- ° Sample ID: LRB 20 Method Blank 9teh FF#4G?oJ Run: ICPMS4-0_090226A 07126%0915:31 Aluminum 0.0009 mg/L 0.0001 Antimony 0.00010 mg/L 2E-05 Arsenic NO mg/L 0.0002 Barium ND mgA. 8E-05 Beryllium NO mg/L 3E-05 Cadmium NO mg/L 8E-05 Chromium NO mg/L 0.0002 Cobalt NO mg/L 6E-05 Copper NO mg/L 6E-05 Lead NO mg/L 3E-05 Manganese 3E-07 mg/L Mercury NO mg/L 4E-05 Molybdenum NO m91L 5E-05 Nickel NO mg/L 5E-06 Selenium NO mg/L 0:0005 Silver NO mg/L 9E-05 Thallium NO mg/L 4E-05 Uranium NO mg/L 4E-05 Vanadium NO mg/L 6E-05 c 41 p NO mg/L 0.0001 lo ID: LFB am 22 Laboratory Fortified Blank Run: ICPM54-C_090226A 0212610915:59 Aluminum 0.0526 mg/L 0.0010 103 85 115 Antimony 0.0508 mg/L 0.0010 101 85 115 Arsenic 0.0541 mg/L 0.0010 108 85 115 Barium 0.0529 mg/L 0.0010 106 85 115 Beryllium 0.0539 mg/L 0.010 108 85 115 Cadmium 0.0539 mg/L 0.0010 108 85 115 Chromium OA545 mg/L 0.0010 109 85 115 Cobalt 0.0543 mg/L 0.0010. 109 85 115 Copper 0.0552 mg/L 0.0010 110 85 115 Lead 0.0536 mg/L 0.0010 107 85 115 Manganese 0.0511 mg/L 0.0010 102 85 115 Mercury 0.00520 mg/L 0.0010 104 85 115 Molybdenum 0.0514 mg/L D.0010 103 85 115 Nickel 0.0550 mg/L 0.0010 110 85 115 Selenium 0.0549 mg/L 0.0010 110 85 115 Silver 0.0217 mg1L 0.0010 108 85 116 Thallium 0.0510 mg1L 0.0010 102 85 115 Uranium 0.0498 mg/L 0.00030 100 85 115 Vanadium 0.0542 mg1L 0.0010 108 85 115 Zinc 0.0573 mg/L 0.0010 114 85 115 Qualifiers: - - - na" reporting limit. NO - Not detected at the reporting limit. Minimum detectable concentration