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wwwmwgoab.com Helena, MT 877472 -0111 - Billings, MT 800 - 735 -4409 - Casper, WY 888- 235 -0515 <br />F1 w*=Am yJV 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: 09/05/13 <br />Project: Schwartz SW 8/6/13 S27019 Work Order: C13080305 <br />[Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E300.0 Analytical Run: IC2- C_130809A <br />Sample ID: CCV- 081213 -01 2 Continuing Calibration Verification Standard 08/09/13 11:34 <br />Chloride 9.44 mg /L 1.0 94 90 110 <br />Sulfate 37.9 mg /L 1.0 95 90 110 <br />Method: <br />E300.0 <br />Batch- R176979 <br />Sample ID: <br />ICB- 081213 <br />2 <br />Method Blank <br />Run: IC2- C_130809A <br />08/09/13 11:04 <br />Chloride <br />ND mg /L <br />0.03 <br />Sulfate <br />0.1 mg /L <br />0.07 <br />Sample ID: <br />LFB- 081213 -01 <br />2 <br />Laboratory Fortified Blank <br />Run: IC2- C_130809A <br />08/09/13 11:19 <br />Chloride <br />9.44 mg /L <br />1.0 <br />94 <br />90 110 <br />Sulfate <br />37.9 mg /L <br />1.0 <br />94 <br />90 110 <br />Sample ID: <br />C13080311- 001AMS <br />2 <br />Sample Matrix Spike <br />Run: IC2- C_130809A <br />08/09/13 12:05 <br />Chloride <br />166 mg /L <br />1.0 <br />109 <br />90 110 <br />Sulfate <br />51.2 mg /L <br />10 <br />103 <br />90 110 <br />Sample ID: <br />013080311- 001AMSD <br />2 <br />Sample Matrix Spike Duplicate <br />Run: IC2- C_130809A <br />08/09/13 12:21 <br />Chloride <br />16.7 mg /L <br />1.0 <br />110 <br />90 110 <br />0.6 20 <br />Sulfate <br />51.5 mg /L <br />1.0 <br />104 <br />90 110 <br />0.6 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 17 of 25 <br />