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www.energylab.coro Helena, W 877-472-0711 • Billings, MT 808-735-4489 • Casper, WY 888-235-0515 <br />Ana"calfxce0enceSface 1851 Gillette, WY 866-686-7175 • Rapid City, SD 888-672.1225 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Sampling Program Discharge <br />Analyte Count Result Units <br />Method: E200.7 <br />Sample ID: MB-101222A 3 Method Blank <br />Chromium ND mg/L <br />Iron 0.00200 mg/L <br />Manganese ND mg/L <br />Sample ID: LFB-101222A 3 Laboratory Fortified Blank <br />Chromium 0.950 mg/L <br />Iron 0.951 mg/L <br />Manganese 0.961 mg/L <br />Sample ID: C10120365-002AMS2 3 Sample Matrix Spike <br />Chromium 1.95 mg/L <br />Iron 1.95 mg/L <br />Manganese 1.98 mg/L <br />Sample ID: 010120365-002AMSD 3 Sample Matrix Spike Duplicate <br />Chromium 1.97 mg/L <br />Iron 1.99 mg/L <br />Manganese 2.00 mg/L <br />Report Date: 01/24/11 <br />Work Order: C10120395 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />I <br />Batch: R141199 <br />Run: ICP2-C 101222A 12/22/1011:29 <br />0.010 <br />0.030 <br />0.0050 <br /> Run: ICP2-C_101222A 12/22/10 11:33 <br />0.050 95 85 115 <br />0.030 95 85 115 <br />0.010 96 85 115 <br /> Run: ICP2-C_101222A 12/22/10 18:18 <br />0.050 95 70 130 <br />0.030 95 70 130 <br />0.010 97 70 130 <br /> Run: ICP2-C_101222A 12/22/10 18:22 <br />0.050 97 70 130 1.4 20 <br />0.030 97 70 130 2.1 20 <br />0.010 98 70 130 0.8 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 11 of 22