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ENERGY <br />AFIORATORIE.S <br />www.energjtab.com <br />AaffjbatEg aiauts Saaee 1952 <br />Client: Cotter Corporation <br />Project: Schwartz GW 6/23/11 S25850 <br />Helena, MT 877 - 472 -0711 • Billings, MT 800 -735- 4489 • Casper, WY 888 -235 -0515 <br />Gillette, WY 868 -686 -7175 • Rapid City, SD 888 -672 -1225 • College Station, TX 888 -690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 07/22/11 <br />Work Order: C11061003 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Dual <br />Method: E300.0 <br />Sample ID: ICV 110627 <br />Chloride <br />Sulfate <br />Method: E300.0 <br />Sample ID: ICB- 110627 2 Method Blank <br />Chloride 0.04 mg /L <br />Sulfate 0.2 mg /L <br />Qualifiers: <br />2 Initial Calibration Verification Standard <br />9.91 mg /L 1.0 99 90 110 <br />39.6 mg /L 1.0 99 90 110 <br />0.04 <br />0.1 <br />Run: IC2 -C 110627A <br />Analytical Run: IC2- C_110627A <br />06/27/11 15:52 <br />Page 13 of 21 <br />Batch: R147435 <br />06/27/11 16:08 <br />Sample ID: LFB 110627 2 Laboratory Fortified Blank Run: IC2- C_110627A 06/27/11 16:23 <br />Chloride 9.87 mg /L 1.0 98 90 110 <br />Sulfate 39.8 mg /L 1.0 99 90 110 <br />Sample ID: C11061003 -001 BMS 2 Sample Matrix Spike Run: IC2- C_110627A 06/28/11 01:07 <br />Chloride 57.1 mg /L 1.0 97 80 120 <br />Sulfate 396 mg /L 1.6 80 120 A <br />Sample ID: C11061003 001BMSD 2 Sample Matrix Spike Duplicate Run: IC2- C_110627A 06/28/11 01:23 <br />Chloride 57.3 mg /L 1.0 98 80 120 0.4 10 <br />Sulfate 395 mg /L 1.6 80 120 0.1 10 A <br />RL - Analyte reporting limit. A - The analyte level was greater than four times the spike level. In <br />accordance with the method % recovery is not calculated. <br />ND - Not detected at the reporting limit. MDC - Minimum detectable concentration <br />