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177-472-071 t Billings, MT leQO-785-4469 • Casper, lYY 868-235-8515 <br />Mt <br />., www na?tl3bcom ff <br />sae rant I?,6 ,11,75; 0. Rapid City, SD 818-671-1125 • College Station, TX 88"10-2216 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/08/11 <br />Project: Schwartz SW 03/08/11 S25677-S25684 Work Order: C11030280 <br />Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E245.1 <br />Sample ID: MB-29262 Method Blank Run: CVAA_C203_110314A <br />Mercury ND mg/L 0.00010 <br />Sample ID: LCS-29262 Laboratory Control Sample Run: CVAA_C203_110314A <br />Mercury 0.00480 mg/L 0.00010 96 90 110 <br />Sample ID: C11030147-006EMS Sample Matrix Spike Run: CVAA_C203_110314A <br />Mercury 0.00506 mg/L 0.00010 101 85 115 <br />Sample ID: C11030147-006EMSD Sample Matrix Spike Duplicate Run: CVAA_C203_110314A <br />Mercury 0.00489 mg/L 0.00010 98 85 115 3.4 <br />Batch: 29262 <br />03/14/11 15:56 <br />03/14/11 15:58 <br />03/14/11 16:21 <br />03/14/11 16:23 <br />10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 20 of 36