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ENERGY <br />A'-101-1A101 <br />www.encrg 1ab.com <br />IetBtldt E • t952 J l <br />Client: Cotter Corporation <br />Project: Schwartz GW 5/12/2011 S25787 <br />Method: E300.0 <br />Sample ID: ICV- 110517 <br />Chloride <br />Sulfate <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - Not detected at the reporting limit. <br />Helena, MT 877 - 472 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888- 235 -0515 <br />Gillette, WY 866 -686 -7175 • Rapid City, SD 888-672-1225 • College Station, TX 888 - 680.2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 06/15/11 <br />Work Order: C11050500 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Analytical Run: IC2- C_110517A <br />05/17/11 17:18 <br />2 Initial Calibration Verification Standard <br />10.2 mg /L 1.0 102 90 110 <br />40.4 mg /L 1.0 101 90 110 <br />Batch: R145981 <br />05/17/11 17:34 <br />Method: E300.0 <br />Sample ID: ICB- 110517 2 Method Blank Run: IC2- C_110517A <br />Chloride ND mg /L 3.0 <br />Sulfate ND mg /L 5.0 <br />Sample ID: LFB- 110517 2 Laboratory Fortified Blank <br />Run: 1C2- C_110517A 05/17/11 17:49 <br />Chloride 10.0 mg /L 1.0 100 90 110 <br />Sulfate 40.0 mg /L 1.0 99 90 110 <br />Sample ID: 011050500- 0016MS 2 Sample Matrix Spike <br />Run: 1C2- C_110517A 05/18/11 10:16 <br />Chloride <br />55.3 mg /L 1.0 94 80 120 Sulfate 387 mg /L 1.6 80 120 A <br />Sample ID: 011050500- 0016MSD 2 Sample Matrix Spike Duplicate <br />Run: IC2- C_110517A 05/18/11 10:32 <br />Chloride 55.3 mg /L 1.0 94 80 120 0.0 10 <br />Sulfate 386 mg /L 1.6 80 120 0.1 10 A <br />A - The analyte level was greater than four times the spike level. In <br />accordance with the method % recovery is not calculated. <br />MDC - Minimum detectable concentration <br />Page 12 of 20 <br />