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? www.energylab.com Helena, MT 877-472-0711 ? Billings, MT 800-735-4489 • Casper, wy 888-235-0515 <br />: Ans"ral Exceflowe Skm 1952 ' Gillette, WY 866-686-7175 • Rapid City, SD 888-672-1225 • College Station, Tx 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 09/09/10 <br />Project: Schwartzwalder Water Monitoring Program Work Order: C10080639 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />I <br />Method: E200.8 Batch: R136517A <br />Sample ID: C1 0080639-001 DMS4 8 Sample Matrix Spike Run: ICPMS4-C_100826A 08/27/10 11:20 <br />Arsenic 0.0547 mg/L 0.0010 109 70 130 <br />Cadmium 0.0519 mg/L 0.010 103 70 130 <br />Copper 0.0578 mg/L 0.010 103 70 130 <br />Nickel 0.0864 mg/L 0.050 100 70 130 <br />Selenium 0.0554 mg/L 0.0010 110 70 130 <br />Silver 0.0195 mg/L 0.010 97 70 130 <br />Uranium 0.0537 mg/L 0.00030 107 70 130 <br />Zinc 0.138 mg/L 0.010 100 70 130 <br />Sample ID: C10080639-001DMSD 8 Sample Matrix Spike Duplicate Run: ICPMS4-C_100826A 08/27/10 11:27 <br />Arsenic 0.0544 mg/L 0.0010 108 70 130 0.5 20 <br />Cadmium 0.0517 mg/L 0.010 103 70 130 0.4 20 <br />Copper 0.0575 mg/L 0.010 103 70 130 0.4 20 <br />Nickel 0.0857 mg/L 0.050 98 70 130 0.9 20 <br />Selenium 0.0553 mg/L 0.0010 110 70 130 0.2 20 <br />Silver 0.0192 mg/L 0.010 96 70 130 1.5 20 <br />Uranium 0.0534 mg/L 0.00030 107 70 130 0.5 20 <br />Zinc 0.136 mg/L 0.010 98 70 130 0.9 20 <br />Sample ID: LRB 8 Method Blank Run: ICPMS4-C_100826A 08/26/10 13:33 <br />Arsenic 6E-05 mg/L 4E-05 <br />Cadmium 0.0001 mg/L 7E-05 <br />Copper 0.004 mg/L 6E-05 <br />Nickel 0.007 mg/L 5E-05 <br />Selenium 5E-05 mg/L 5E-05 <br />Silver ND mg/L 8E-05 <br />Uranium 4E-05 mg/L 8E-06 <br />Zinc 0.010 mg/L 0.0001 <br />Sample ID: LFB 8 Laboratory Forti fied Blank Run: ICPMS4-C_100826A 08/26/10 13:40 <br />Arsenic 0.0542 mg/L 0.0010 108 85 115 <br />Cadmium 0.0546 mg/L 0.0010 109 85 115 <br />Copper 0.0544 mg/L 0.0010 101 85 115 <br />Nickel 0.0549 mg/L 0.0010 95 85 115 <br />Selenium 0.0551 mg/L 0.0010 110 85 115 <br />Silver 0.0214 mg/L 0.0010 107 85 115 <br />Uranium 0.0529 mg/L 0.00030 106 85 115 <br />Zinc 0.0569 mg/L 0.0010 94 85 115 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 12 of 21