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• <br />n <br />rs www.energylab.com Helena, MT 877- 472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888 - 235 -0515 <br />A`_ AadyftdEusillw*slam <br />r952 ; Gillette, WY 866 -686 -7175 • Rapid City, SD 886 -672 -1225 * College Station, <br />TX 888- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />05/06/13 <br />Project: Schwartz GW 4/11/13 S26889 Work Order: <br />C13040486 <br />Analyte Count <br />Result Units RL %REC Low Limit High Limit RPD <br />i <br />RPDLimit Qual <br />Method: E300.0 <br />Batch: R172589 <br />Sample ID: ICB- 041513 <br />2 Method Blank Run: IC2- C_130415A <br />04/15/13 13:37 <br />Chloride <br />0.03 mg /L 0.03 <br />Sulfate <br />0.2 mg /L 0.07 <br />Sample ID: LFB- 041513 -01 <br />2 Laboratory Fortified Blank Run: IC2- C_130415A <br />04/15/13 14:08 <br />Chloride <br />9.61 mg /L 10 96 90 110 <br />Sulfate <br />38.2 mg /L 10 95 90 110 <br />Sample ID: LFBD- 041513 -01 <br />2 Laboratory Fortified Blank Duplicate Run: IC2- C_130415A <br />04/15/13 14:23 <br />Chloride <br />971 mg /L 1.0 97 90 110 1.1 <br />20 <br />Sulfate <br />38.5 mg /L 1.0 96 90 110 1.0 <br />20 <br />Sample ID: C13040389- 008AMS <br />2 Sample Matrix Spike Run: IC2- C_130415A <br />04/17/13 17:32 <br />Chloride <br />1520 mg /L 10 102 90 110 <br />Sulfate <br />3140 mg /L 42 100 90 110 <br />Sample ID: C13040389 -008AMSD <br />2 Sample Matrix Spike Duplicate Run: IC2- C_130415A <br />04/17/13 17:48 <br />Chloride <br />1530 mg /L 10 104 90 110 0.7 <br />20 <br />Sulfate <br />3180 mg /L 42 102 90 110 1.4 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 14 of 21 <br />