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wirwenergyla6 cam T 67=7 4472-0711 • Billings, MT 800-735-44Q9 • Casper, WY 888-235-6515: <br />9 Air;brtfealErr ftwSAo a IM T175 ?, 4api d City, so 888-672-1225 • College Station, TX 888-610-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/11 A 1 <br />Project: Schwartz-SW 3/10/2011 S25686-S25688 Work Order: C11030378 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Batch: 29339 <br />Sample ID: MB-29339 Method Blank Run: ICPMS2-C_110328A 03/29/11 15:01 <br />Uranium ND mg/L 0.00020 <br />Sample ID: LCS3-29339 Laboratory Control Sample Run: ICPMS2-C_110328A 03/29/11 16:16 <br />Uranium 0.566 mg/L 0.00030 113 85 115 <br />Sample ID: C11030458-007EMS3 Sample Matrix Spike Run: ICPMS2-C_110328A 03/29/11 17:57 <br />Uranium 0.634 mg/L 0.00030 126 70 130 <br />Sample ID: C11030458-007EMSD Sample Matrix Spike Duplicate Run: ICPMS2-C_110328A 03/29/11 18:04 <br />Uranium 0.617 mg/L 0.00030 123 70 130 2.6 20 <br />Method: E200.8 Batch: R144159 <br />Sample ID: LRB 6 Method Blank Run: ICPMS2-C_110328A 03/28/11 22:22 <br />Antimony ND mg/L 0.0010 <br />Arsenic ND mg/L 0.0010 <br />Chromium ND mg/L 0.0010 <br />Copper ND mg/L 0.0010 <br />Molybdenum ND mg/L 0.0050 <br />Zinc ND mg/L 0.0050 <br />Sample ID: LFB 6 Laboratory Fortified Blank Run: ICPMS2-C_110328A 03/28/11 22:29 <br />Antimony 0.0654 mg/L 0.0010 131 85 115 S <br />Arsenic 0.0495 mg/L 0.0010 99 85 115 <br />Chromium 0.0508 mg/L 0.0010 102 85 115 <br />Copper 0.0484 mg/L 0.0010 97 85 115 <br />Molybdenum 0.0662 mg/L 0.0010 132 85 115 S <br />Zinc 0.0487 mg/L 0.0010 97 85 115 <br />- Response is above standard QA limit. This could indicate a high bias for the sample results. Since there were no detectable analyte responses, and the remainder of the <br />run QA is within acceptance range, this batch is approved. <br />Sample ID: 011030679-001 BMS4 6 Sample Matrix Spike Run: ICPMS2-C_110328A 03/29/11 19:19 <br />Antimony 0.0558 mg/L 0.050 110 70 130 <br />Arsenic 0.0539 mg/L 0.0010 107 70 130 <br />Chromium 0.0532 mg/L 0.050 106 70 130 <br />Copper 0.0616 mg/L 0.010 106 70 130 <br />Molybdenum 0.117 mg/L 0.10 115 70 130 <br />Zinc 0.0586 mg/L 0.010 111 70 130 <br />Sample ID: C11030679-001 BMSD 6 Sample Matrix Spike Duplicate Run: ICPMS2-C_110328A 03/29/11 19:26 <br />Antimony 0.0561 mg/L 0.050 111 70 130 0.6 20 <br />Arsenic 0.0527 mg/L 0.0010 104 70 130 2.2 20 <br />Chromium 0.0522 mg/L 0.050 104 70 130 1.9 20 <br />Copper 0.0602 mg/L 0.010 103 70 130 2.4 20 <br />Molybdenum 0.120 mg/L 0.10 121 70 130 2.6 20 <br />Zinc 0.0540 mg/L 0.010 102 70 130 8.1 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />Page 15 of 29 <br />