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................. <br />- www.energyJab.com <br />ti ' r , , ? _ o ? Analytlcat &callanca L"nu 195? <br />Helena, Mt 577-472-0711 • Billings, MT 800-735-4489 - Casper, WY 688-235-0515 <br />Gillette, WY 866.686-7175 G Rapid City, SD 888-572-1225 , College Station, TX 688-690.2218 <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 Wall Work Order: C10110787 <br />Anatyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E245.1 Batch: 28329 <br />Sample ID: MB-28329 Method Blank Run: CVAA_C203_101130A 11130/10 12:57 <br />Mercury 1E-05 mg/L BE-06 <br />Sample ID: LCS-28329 Laboratory Control Sample Run: CVAA_C203_101130A 11!30/10 12:58 <br />Mercury 0.00500 mg/L 0.00020 100 90 110 <br />Sample ID: C10110839-006BMS Sample Matrix Spike Run: CVAA_C203_101130A 11/30/10 13:01 <br />Mercury 0.00470 mg/L 0.00020 94 85 115 <br />Sample ID: C10110839-006BMSD Sample Matrix Spike Duplicate Run: CVAA_C203_101130A 11/30/10 13:02 <br />Mercury 0.00462 mg/L 0.00020 92 85 115 1.6 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum delectable concentration <br />ND - Not detected at the reporting limit. <br />Page 18 of 30