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Mffwww.vwoab.com r Helena, MT 677472 -0711 * Billings, W 800- 735 -4489 a Casper, WY 888 - 235 -0515 <br />Skmt119 J 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: <br />Cotter Corporation <br />Report Date: <br />08/08/13 <br />Project: <br />Schwartz -GW 7/10/13 S27017 <br />Work Order: <br />C13070431 <br />Analyte <br />Count Result Units RL ° /.REC Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: <br />E300.0 <br />Analytical Run: IC2- C_130712A <br />Sample ID: <br />CCV- 071213 -04 2 Continuing Calibration Verification Standard <br />24.1 <br />07/12/13 21:26 <br />Chloride <br />9.95 mg /L 1.0 99 90 <br />110 <br />90 110 <br />Sulfate <br />39.4 mg /L 1.0 99 90 <br />110 <br />90 110 <br />Method: E300.0 <br />Sample ID: ICB- 071213 <br />Chloride <br />Sulfate <br />Sample ID: LFB- 071213 -01 <br />Chloride <br />Sulfate <br />Sample ID: C13070397- 008AMS <br />Chloride <br />Sulfate <br />Sample ID: C13070397- 008AMSD <br />Chloride <br />Sulfate <br />2 Method Blank <br />ND <br />mg /L <br />0.1 <br />mg /L <br />2 Laboratory Fortified Blank <br />9.68 <br />mg /L <br />38.7 <br />mg /L <br />2 Sample Matrix Spike <br />24.2 <br />mg /L <br />200 <br />mg /L <br />2 Sample Matrix Spike Duplicate <br />24.1 <br />mg /L <br />199 <br />mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: IC2- C_130712A 07/12/13 18:37 <br />1.0 100 90 110 0.4 20 <br />1.7 101 90 110 0.4 20 <br />ND - Not detected at the reporting limit. <br />Page 13 of 20 <br />Batch: R175841 <br />Run: IC2- C_130712A <br />07/12/13 10:08 <br />0.03 <br />0.07 <br />Run: IC2- C_130712A <br />07/12/13 10:23 <br />1.0 <br />97 <br />90 110 <br />1.0 <br />97 <br />90 110 <br />Run: IC2- C_130712A <br />07/12/13 18:21 <br />1.0 <br />100 <br />90 110 <br />1.7 <br />102 <br />90 110 <br />Run: IC2- C_130712A 07/12/13 18:37 <br />1.0 100 90 110 0.4 20 <br />1.7 101 90 110 0.4 20 <br />ND - Not detected at the reporting limit. <br />Page 13 of 20 <br />