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www.energyiab.com Helena, MT 877.472-0711 a Billings, M7 800-735-4489 = Casper, WY 888-235-0515 <br />daaryticarExcarrance S1aca rssr Gillette, WY 866-686-7175 * Rapid City, SO 888-672-1225 * College Station, T% 888-690-2218 <br />......... ......... ......... _ <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program <br />Report Date: 09/14/10 <br />Work Order: C10080305 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qua[ <br />Method: E245.1 Batch: 27028 <br />Sample ID: MB-27028 Method Blank Run: CVAA_C203_100811A 08/11/10 12:53 <br />Mercury ND mg/L 2E-05 <br />Sample ID: LCS-27028 Laboratory Control Sample Run: CVAA_C203_100811A 08/11/10 12:55 <br />Mercury 0.00486 mg/L 0.00020 97 90 110 <br />Sample ID: C10080288-001CMS Sample Matrix Spike Run: CVAA_C203_100811A 08/11/10 13:22 <br />Mercury 0.00489 mg/L 0.00010 98 85 115 <br />Sample ID: C1 0080288-001 CMSD Sample Matrix Spike Duplicate Run: CVAA_C203_100811A 08/11/10 13:24 <br />Mercury 0.00490 mg/L 0.00010 98 85 115 0.1 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 13 of 21