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J www.energylab.com <br />M Ans"cil &ca/ienre $Mcs 1952 <br />Helena, MT 877-472-0711 1 Billings, MT 800-735-4489 . Casper, WY 888-235-0515 <br />Gillette, WY 866-686-7175 a Rapid City, SD 888-672-1225 o College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 01/05/11 <br />Project: Schwartzwalder Mine Monitoring Program-Surface Wat Work Order. C10110787 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qua[ <br />Method: E200.7 <br />Sample ID: MB-101210A 4 Method Blank Run: ICP2-C_101210A <br />Aluminum ND mg/L 0.01 <br />Boron ND mg/L 0.009 <br />Iron ND mg/L 0.002 <br />Manganese ND mg/L 0.0004 <br />Sample ID: LFB-101210A 4 Laboratory Fortified Blank Run: ICP2-C_101210A <br />Aluminum 0.916 mg/L 0.10 92 85 115 <br />Boron 0.909 mg/L 0.10 91 85 115 <br />Iron 0.959 mg/L 0.030 96 85 115 <br />Manganese 0.936 mg/L 0.010 94 85 115 <br />Sample ID: C10120061.001DMS2 4 Sample Matrix Spike Run: ICP2-C_101210A <br />Aluminum 1.95 mg/L 0.10 96 70 130 <br />Boron 1.97 mg/L 0.10 95 70 130 <br />Iron 2.02 mg/L 0.030 96 70 130 <br />Manganese 1.97 mg/L 0.010 96 70 130 <br />Sample 1D: C10120061-001 DMSD 4 Sample Matrix Spike Duplicate Run: ICP2-C 101210A <br />Aluminum 1.90 mg/L 0.10 93 70 130 2.9 <br />Boron 1.94 mg/L 0.10 94 70 130 1.4 <br />Iron 1.98 mg/L 0.030 94 70 130 2.1 <br />Manganese 1.92 mg/L 0.010 94 70 130 2.2 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Batch: R140794 <br />12/10/10 13:00 <br />12/10/10 13:04 <br />12,110/10 17;56 <br />12/10110 18:00 <br />20 <br />20 <br />20 <br />20 <br />Page 11 of 30 <br />