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I www.e weiab.com ( Helena, MT 877- 472 -0711 • Billings, MT 600- 735 -4489 • Casper, WY 808- 235 -8515 <br />Gillette, WY 866 -686 -7175 • Rapid City, SO 886 -672 -1225 • College Station, T% 888 -680 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 01/08/14 <br />Project: Schwartz -GW 12/11/13 S27332 Work Order: C13120406 <br />Analyte Count Result Units RL ° /oREC Low Limit High Limit RPD RPDLimit Qual <br />Method: E300.0 Analytical Run: IC2- C_131216A <br />Sample ID: CCV- 121613 -01 2 Continuing Calibration Verification Standard 12/16/13 12:14 <br />Chloride 9.94 mg /L 1.0 99 90 110 <br />Sulfate 39.8 mg /L 1.0 99 90 110 <br />Method: E300.0 <br />Sample ID: ICB- 121613 <br />Chloride <br />Sulfate <br />Sample ID: LFB- 121613 <br />Chloride <br />Sulfate <br />2 Method Blank <br />ND <br />mg /L <br />ND <br />mg /L <br />2 Laboratory Fortified Blank <br />10.2 <br />mg /L <br />40.8 <br />mg /L <br />Sample ID: C13120466 -001 AMS 2 Sample Matrix Spike <br />Chloride 40.1 mg /L <br />Sulfate 70.2 mg /L <br />Sample ID: 013120466- 001AMSD 2 Sample Matrix Spike Duplicate <br />Chloride 40.6 mg /L <br />Sulfate 72.3 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 9 of 14 <br />Batch: R181782 <br />Run: IC2 -C 131216A <br />12/16/1311:35 <br />0.03 <br />0.07 <br />Run: IC2- C_131216A <br />12/16/13 11:54 <br />1.0 <br />102 <br />90 110 <br />1.0 <br />102 <br />90 110 <br />Run: IC2 -C 131216A <br />12/16/1312:51 <br />1.0 <br />99 <br />90 110 <br />1.0 <br />101 <br />90 110 <br />Run: IC2- C_131216A <br />12/16/13 13:28 <br />1.0 <br />104 <br />90 110 <br />1.2 20 <br />1.0 <br />107 <br />90 110 <br />2.9 20 <br />ND - Not detected at the reporting limit. <br />Page 9 of 14 <br />