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www.energylab.com ( Helena, W 877-472-0711 • Billings, MT 800-735-4489 • Casper, WY 888-235-0515 <br />An,lyhM&csueas Vwo 1838 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 <br />Project: Schwartzwalder Water Monitoring Program <br />Report Date: 09/16/10 <br />Work Order: C10080658 <br />Analyte Count Result Units <br />Method: E200.8 <br />Sample ID: C10080658-001CMS4 7 Sample Matrix Spike <br />Copper 0.0535 mg/L <br />Iron 1.26 mg/L <br />Manganese 0.0620 mg/L <br />Molybdenum 0.0510 mg/L <br />Silver 0.0184 mg/L <br />Thallium 0.0531 mg/L <br />Zinc 0.0580 mg/L <br />Sample ID: C10080658-001CMSD 7 Sample Matrix Spike Duplicate <br />Copper 0.0533 mg/L <br />Iron 1.29 mg/L <br />Manganese 0.0625 mg/L <br />Molybdenum 0.0519 mg/L <br />Silver 0.0196 mg/L <br />Thallium 0.0531 mg/L <br />Zinc 0.0582 mg/L <br />Sample ID: LRB 7 Method Blank <br />Copper ND mg/L <br />Iron 0.0008 mg/L <br />Manganese ND mg/L <br />Molybdenum 0.0003 mg/L <br />Silver ND mg/L <br />Thallium ND mg/L <br />Zinc 0.002 mg/L <br />Sample ID: LFB 7 Laboratory Fort ified Blank <br />Copper 0.0541 mg/L <br />Iron 1.30 mg/L <br />Manganese 0.0538 mg/L <br />Molybdenum 0.0535 mg/L <br />Silver 0.0215 mg/L <br />Thallium 0.0539 mg/L <br />Zinc 0.0567 mg/L <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />I <br /> Batch: R136282A <br /> Run: ICPMS4-C_100819A 08/20/1012:43 <br />0.010 107 70 130 <br />0.030 99 70 130 <br />0.010 104 70 130 <br />0.10 101 70 130 <br />0.010 92 70 130 <br />0.10 106 70 130 <br />0.010 110 70 130 <br /> Run:ICPMS4-C_100819A 08/20/1012:50 <br />0.010 106 70 130 0.5 20 <br />0.030 102 70 130 2.2 20 <br />0.010 106 70 130 0.9 20 <br />0.0010 103 70 130 1.8 20 <br />0.010 98 70 130 6.1 20 <br />0.0010 106 70 130 0.1 20 <br />0.010 110 70 130 0.4 20 <br /> Run:ICPMS4-C_100819A 08/19/1015:29 <br />6E-05 <br />0.0001 <br />2E-05 <br />8E-05 <br />8E-05 <br />2E-05 <br />0.0001 <br /> Run:ICPMS4-C_100819A 08/19/1015:36 <br />0.0010 108 85 115 <br />0.012 104 85 115 <br />0.0010 108 85 115 <br />0.0010 106 85 115 <br />0.0010 107 85 115 <br />0.0010 108 85 115 <br />0.0010 110 85 115 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 13 of 25