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�Mwww.enermdab.com Helena, MT 877 - 472 -0711 - Billings, MT 800 -735 -4489 - Casper, WY 888- 235 -0515 <br />A ticSlfr aresuQCe 182 Gillette, WY 866 -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 />Client: Cotter Corporation Report Date: 02/13/13 <br />Project: Schwartz GW 1/24/13 S26788 Work Order: C13010781 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E300.0 Analytical Run: IC2- C_130129A <br />Sample ID: ICV- 012913 -11 2 Initial Calibration Verification Standard 01/29/13 15:43 <br />Chloride 9.77 mg /L 1.0 98 90 110 <br />Sulfate 41.3 mg /L 1.0 103 90 110 <br />Method: E300.0 <br />Batch: R169733 <br />Sample ID: ICB- 012913 -12 <br />2 <br />Method Blank <br />Run: IC2- C_130129A <br />01/29/13 15:58 <br />Chloride <br />0.04 mg /L <br />0.02 <br />Sulfate <br />0.1 mg /L <br />0.09 <br />Sample ID: LFB- 012913 -13 <br />2 <br />Laboratory Fortified Blank <br />Run: IC2- C_130129A <br />01/29/13 16:14 <br />Chloride <br />9.39 mg /L <br />1.0 <br />94 <br />90 110 <br />Sulfate <br />39.5 mg /L <br />1.0 <br />98 <br />90 110 <br />Sample ID: C13010790- 001AMS <br />2 <br />Sample Matrix Spike <br />Run: IC2- C_130129A <br />01/29/13 17:15 <br />Chloride <br />41.5 mg /L <br />1.0 <br />100 <br />90 110 <br />Sulfate <br />290 mg /L <br />1.7 <br />94 <br />90 110 <br />Sample ID: C13010790- 001AMSD <br />2 <br />Sample Matrix Spike Duplicate <br />Run: IC2- C_130129A <br />01/29/13 17:31 <br />Chloride <br />41.3 mg /L <br />1.0 <br />99 <br />90 110 <br />0.4 20 <br />Sulfate <br />289 mg /L <br />1.7 <br />94 <br />90 110 <br />0.1 20 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 17 of 24 <br />