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www.awgosb.com Helena, MT 677- 472 -0711 • Billings, W 806- 735 -4489 a Casper, WY 888 -235 -0515 <br />°°' N= IM J Gillette, WY 866- 686 -7175 • Rapid City, SD 886- 672 -1225 • College Station, TX 888 -690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 08/15/13 <br />Project: Schwartz - GW 07/17/13 S27048 Work Order: C13070703 <br />[Analyte Count Result Units RL ° /.REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E300.0 Analytical Run: IC2- C_130719B <br />Sample ID: CCV- 071913 -05 2 Continuing Calibration Verification Standard 07/20/13 05:17 <br />Chloride 9.98 mg /L 1.0 100 90 110 <br />Sulfate 39.5 mg /L 1.0 99 90 110 <br />Method: <br />E300.0 <br />Batch: R176166 <br />Sample ID: <br />ICB- 071913 <br />2 <br />Method Blank <br />Run: IC2- C_130719B <br />07/19/13 14:22 <br />Chloride <br />ND mg /L <br />0.03 <br />Sulfate <br />0.1 mg /L <br />0.07 <br />Sample ID: <br />LFB- 071913 -01 <br />2 <br />Laboratory Fortified Blank <br />Run: IC2- C_130719B <br />07/19/13 14:38 <br />Chloride <br />9.90 mg /L <br />1.0 <br />99 <br />90 110 <br />Sulfate <br />39.3 mg /L <br />1.0 <br />98 <br />90 110 <br />Sample ID: <br />C13070698- 008AMS <br />2 <br />Sample Matrix Spike <br />Run: IC2- C_130719B <br />07/20/13 06:03 <br />Chloride <br />1700 mg /L <br />21 <br />101 <br />90 110 <br />Sulfate <br />7620 mg /L <br />83 <br />102 <br />90 110 <br />Sample ID: <br />C13070698- 008AMSD <br />2 <br />Sample Matrix Spike Duplicate <br />Run: IC2- C_130719B <br />07/20/13 06:18 <br />Chloride <br />1680 mg /L <br />21 <br />99 <br />90 110 <br />1.1 20 <br />Sulfate <br />7550 mg /L <br />83 <br />100 <br />90 110 <br />1.0 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 7 of 12 <br />