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wwixAne #ab.com 472-0711 • Billings, MT 801-735-4489 • Casper,. WY 888-235-1515 <br />A4f41faf:fsulrc?sit?altiu d 75'! Rapid C4, SD a8B-672-1225 • College 3tatinn, TX 881410-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartzwalder Mine Monitoring Program-Discharge <br />Analyte Count Result Units <br />Method: E200.7 <br />Sample ID: MB-28386 Method Blank <br />Iron ND mg/L <br />Sample ID: LCS3-28386 Laboratory Control Sample <br />Iron 2.75 mg/L <br />Sample ID: C10110960-001AMS3 Sample Matrix Spike <br />Iron 111 mg/L <br />Sample ID: C10110960-001AMSD Sample Matrix Spike Duplicate <br />Iron 114 mg/L <br />Method: E200.7 <br />Sample ID: MB-101208A 2 Method Blank <br />Iron 0.002 mg/L <br />Manganese ND mg/L <br />Sample ID: LFB-101208A 2 Laboratory Fortified Blank <br />Iron 0.969 mg/L <br />Manganese 0.951 mg/L <br />Sample ID: C10110551-001CMS2 2 Sample Matrix Spike <br />Iron 1.98 mg/L <br />Manganese 1.95 mg/L <br />Sample ID: C10110551-001CMSD 2 Sample Matrix Spike Duplicate <br />Iron 2.02 mg/L <br />Manganese 2.00 mg/L <br />Report Date: 12/28/10 <br />Work Order: 010110835 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: 28386 <br />Run: ICP2-C 101208A 12/08/1014:02 <br />0.008 <br /> Run: ICP2-C_101208A 12/08/10 14:06 <br />0.030 110 85 115 <br /> Run: ICP2-C_101208A 12/08/10 14:47 <br />0.030 70 130 A <br /> Run: ICP2-C_101208A 12/08/10 14:51 <br />0.030 70 130 3.0 20 A <br /> Batch: R140698 <br /> Run: ICP2-C 101208A 12/08/10 09:46 <br />0.002 <br />0.0004 <br /> Run: ICP2-C_101208A 12/08/10 09:50 <br />0.030 97 85 115 <br />0.010 95 85 115 <br /> Run: ICP2-C_1 01 208A 12/08/10 10:42 <br />0.030 97 70 130 <br />0.010 96 70 130 <br /> Run: ICP2-C_101208A 12/08/10 10:46 <br />0.030 99 70 130 1.7 20 <br />0.010 98 70 130 2.4 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - Not detected at the reporting limit. <br />A - The analyte level was greater than four times the spike level. In <br />accordance with the method % recovery is not calculated. <br />MDC - Minimum detectable concentration <br />Page 11 of 23