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www.energylabxem Helena, MT 577-472-0711 • Billings, dtt 900-738-4199 • Gasper, wr 0611-M-99 10 <br />Asaq?rnraS6ac?.rast Gillette, WY 866-686-7175 • Rapid City, SD 888-672-1225 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/19/11 <br />Project: Schwartz GW 3/24/11 S25646 & S25647 Work Order: C11030817 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E245.1 Batch: 29410 <br />Sample ID: MB-29410 Method Blank Run: CVAA_C203_110330A 03/30/11 13:38 <br />Mercury ND mg/L 0.00010 <br />Sample ID: LCS-29410 Laboratory Control Sample Run: CVAA_C203_110330A 03/30/11 13:39 <br />Mercury 0.00485 mg/L 0.00010 97 90 110 <br />Sample ID: C11030817-001DMS Sample Matrix Spike Run: CVAA_C203_110330A 03/30/11 13:42 <br />Mercury 0.00497 mg/L 0.00010 99 85 115 <br />Sample ID: C1 1030817-001 DMSD Sample Matrix Spike Duplicate Run: CVAA_C203_110330A 03/30/11 13:43 <br />Mercury 0.00500 mg/L 0.00010 100 85 115 0.4 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 16 of 26