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w"wr eabmn 2-4111 0 Billings, MT 600-735-4119 a Gasper, WY 888=235-0615 <br />A.rKjtlc# E,xabiewabee tJllt ap d;C tY, SD 818=617-1225 • Coliep Statimr, TX 8884fi1-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/20/11 <br />Project: Schwartz-SW 3/22/11 S25636-S25643 Work Order: C11030702 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E245.1 Batch: 29378 <br />Sample ID: MB-29378 Method Blank Run: CVAA_C203_110328A 03/25/11 14:28 <br />Mercury ND mg/L 1 E-06 <br />Sample ID: LCS-29378 Laboratory Control Sample Run: CVAA_C203_110328A 03/25/11 14:29 <br />Mercury 0.00531 mg/L 0.0010 106 85 115 <br />Sample ID: C11030610-001BMS Sample Matrix Spike Run: CVAA_C203_110328A 03/25/11 14:36 <br />Mercury 0.00543 mg/L 0.00020 109 85 115 <br />Sample ID: 011030610-001BMSD Sample Matrix Spike Duplicate Run: CVAA_C203_110328A 03/25/11 14:37 <br />Mercury 0.00516 mg/L 0.00020 103 85 115 5.0 10 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 21 of 38 <br />