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• %vw.energyiab.com l Helena, MT 877-472-0711 • Billings, MT BOD-735-4489 + Casper, WY 888-235-D515 <br />. ` AUJOWExcaaeacsstace 1951 Gillette, WY 866.686-7175 • Rapid City, SO 888-612-1225 o College Station, T% 888-690-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 01/21/11 <br />Project: Schwartzwalder Water Sampling Program-Ground Water Work Order: C10120819 <br />.._...... <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E245.1 <br />Sample ID: C10120690-001 BMS <br />Mercury <br />Sample ID: C10120690-001BMSD <br />Mercury <br />Sample ID: MB-28630 <br />Mercury <br />Sample ID: LCS-28630 <br />Mercury <br />Sample Matrix Spike <br />0.00531 mg/L 0.00020 <br />Sample Matrix Spike Duplicate <br />0.00528 mg/L 0.00020 <br />Method Blank <br />1 E-05 mg/L 1 E-06 <br />Laboratory Control Sample <br />0.00542 mg/L 0.00020 <br />Run: CVAA _C203_101228A <br />106 85 115 <br />Run: CVAAC203101228A <br />106 85 115 <br />Run: CVAA C203 101228A <br />Batch: 28630 <br />12/28/10 11:07 <br />Qualifiers: <br />RI- - Analyte reporting limit. <br />MDC - Minimum delectable concentration <br />Run: CVAA_C203_101228A <br />108 90 110 <br />ND - Not detected at the reporting limit. <br />12/28!10 11:08 <br />0.4 10 <br />12/28/10 11:03 <br />12/28/10 11:04 <br />Page 15 of 25