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wvw.energylab.com <br />?? MaryrlcalfieaAexeAnca1951 <br />Helena, fdT 877-412-0711 + Billings, ldT 800-135-4489 = Casper, WY 888-235-0515 <br />Gillette, V1Y 866.686-7175 v Rapid City, SO 888-812-1225 - College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 12/23/10 <br />Project: Schwartzwalder Water Monitoring Program - SW Work Order: C10110479 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E245.1 Batch: 28190 <br />Sample ID: MB-28190 Method Blank Run: CVAA_C203_101112A 11112/10 13:30 <br />Mercury ND mg/L 8E-06 <br />Sample ID: LCS-28190 Laboratory Control Sample Run: CVAA_C203_,.101112A 11/12/10 13:31 <br />Mercury 0.00518 mg/L 0.00010 104 90 110 <br />Sample ID: C1 01 1 0428-007BMS Sample Matrix Spike Run: CVAA,-C203_101112A 11/12/10 13:52 <br />Mercury 0.00496 mg/L 0.00010 99 85 115 <br />Sample ID: C101 1 0428-007EMSD Sample Matrix Spike Duplicate Run: CVAA_C203_101112A 11/12/10 13:54 <br />Mercury 0.00490 mg/L 0.00010 98 85 115 1.2 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 23 of 40