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wwwoteWeb.com Helena, W 871472-0711 - Billings, W 800-7354489 - Casper, WY 888-235-0515 <br />Iatlh" 2b" 1W Gillette, WY 886-686-7175 - Rapid City, SO 886-072-1225 - College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 11/22/10 <br />Project: Schwartzwalder Water Monitoring Program SW Work Order: C10100592 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Batch: R139312 <br />Sample ID: LRB 12 Method Blank Run: ICPMS2-C_101101A 11/01/10 13:43 <br />Aluminum 0.002 mg/L 0.0001 <br />Antimony ND mg/L 7E-05 <br />Arsenic ND mg/L 6E-05 <br />Chromium ND mg/L 4E-05 <br />Copper 0.001 mg/L 7E-05 <br />Lead 3E-05 mg/L 3E-05 <br />Manganese 8E-05 mg/L 5E-05 <br />Molybdenum ND mg/L 5E-05 <br />Silver ND mg/L 3E-05 <br />Thallium ND mg/L 1 E-05 <br />Uranium 2E-05 mg/L 1 E-05 <br />Zinc 0.008 mg/L 0.0003 <br />Sample ID: LFB 12 Laboratory Fortified Blank Run: ICPMS2-C_101101A 11/01/10 13:49 <br />Aluminum 0.0525 mg/L 0.0010 101 85 115 <br />Antimony 0.0524 mg/L 0.0010 105 85 115 <br />Arsenic 0.0533 mg/L 0.0010 107 85 115 <br />Chromium 0.0520 mg/L 0.0010 104 85 115 <br />Copper 0.0539 mg/L 0.0010 105 85 115 <br />Lead 0.0530 mg/L 0.0010 106 85 115 <br />Manganese 0.0520 mg/L 0.0010 104 85 115 <br />Molybdenum 0.0532 mg/L 0.0010 106 85 115 <br />Silver 0.0209 mg/L 0.0010 104 85 115 <br />Thallium 0.0532 mg/L 0.0010 106 85 115 <br />Uranium 0.0525 mg/L 0.00030 105 85 115 <br />Zinc 0.0557 mg/L 0.0010 96 85 115 <br />Sample ID: C10101070-008CMS4 12 Sample Matrix Spike Run: ICPMS2-C_101101A 11/02/10 02:18 <br />Aluminum 0.0529 mg/L 0.0010 96 70 130 <br />Antimony 0.0572 mg/L 0.050 111 70 130 <br />Arsenic 0.195 mg/L 0.0010 100 70 130 <br />Chromium 0.0466 mg/L 0.0010 93 70 130 <br />Copper 0.0539 mg/L 0.010 98 70 130 <br />Lead 0.0522 mg/L 0.050 104 70 130 <br />Manganese 0.0491 mg/L 0.010 93 70 130 <br />Molybdenum 0.158 mg/L 0.10 99 70 130 <br />Silver 0.0146 mg/L 0.010 73 70 130 <br />Thallium 0.0501 mg/L 0.0010 100 70 130 <br />Uranium 0.341 mg/L 0.00030 70 130 A <br />Zinc 0.0562 mg/L 0.010 104 70 130 <br />Sample ID: C10101070-008CMSD 12 Sample Matrix Spike Duplicate Run: ICPMS2-C_101101A 11/02/10 02:24 <br />Aluminum 0.0527 mg/L 0.0010 95 70 130 0.3 20 <br />Antimony 0.0580 mg/L 0.050 113 70 130 1.5 20 <br />Arsenic 0.200 mg/L 0.0010 110 70 130 2.4 20 <br />Qualifiers: <br />RL - Analyte reporting limit. A - The analyte level was greater than four times the spik e level. In <br /> accordance wi th the method % recovery is not calculated . <br />ND - Not detected at the reporting lim it. MDC - Minimum detectable concentration <br />Page 18 of 36