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ENERGY <br />Client: Cotter Corporation <br />www.energ 1eb.cem Helena, MT 877 -472 -0711 • Billings, MT 800 -135 -4489 • Casper, WY 088- 235 -0515 <br />A, %ca►Eoxince <br />Gillette, WY 866 -686 -7175 • Rapid City, SD 888 - 872 -1225 • College Station, TX 888 -610 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 06/11/12 <br />Project: Schwartz SW 5/01/12 S26376 & S26383 Work Order: C12050084 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E300.0 Analytical Run: IC2- C_120503B <br />Sample ID: ICV- 050312 -08 2 Initial Calibration Verification Standard 05/03/12 12:18 <br />Chloride 9.91 mg /L 1.0 99 90 110 <br />Sulfate 39.8 mg /L 1.0 100 90 110 <br />Method: E300.0 Batch: R159308 <br />Sample ID: ICB2 -050312 -09 2 Method Blank Run: IC2- C_120503B 05/03/12 12:33 <br />Chloride 0.04 mg /L 0.03 <br />Sulfate 0.1 mg /L 0.10 <br />Sample ID: LFB - 050312 - 2 Laboratory Fortified Blank Run: IC2- C_120503B 05/03/12 12:48 <br />Chloride 10.1 mg/L 1.0 101 90 110 <br />Sulfate 40.4 mg /L 1.0 101 90 110 <br />Sample ID: LFBD- 050312 -11 2 Laboratory Fortified Blank Duplicate Run: IC2- C_120503B 05/03/12 13:04 <br />Chloride 10.1 mg /L 1.0 101 90 110 0.5 10 <br />Sulfate 40.9 mg /L 1.0 102 90 110 1.3 10 <br />Sample ID: C12050083 -002AMS 2 Sample Matrix Spike Run: IC2- C_120503B 05/05/12 19:47 <br />Chloride 31.7 mg /L 1.0 106 90 110 <br />Sulfate 235 mg /L 1.6 92 90 110 <br />Sample ID: C12050083 -002AMSD 2 Sample Matrix Spike Duplicate Run: IC2- C_120503B 05/05/12 20:02 <br />Chloride 31.7 mg /L 1.0 106 90 110 0.1 10 <br />Sulfate 235 mg /L 1.6 92 90 110 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 19 of 29 <br />