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www.ewdab.com Helena, NT 877472 -0711 • Billings, MT 600- 7354488 • Casper, WY 888 - 235 -8513 <br />EwO"mSam lint Gillette, WY 866 -606 -7175 • Rapid City, SD 888 472 -1225 • College Station, TX 888 -680 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: <br />Project: <br />Analyte <br />Cotter Corporation <br />Schwartz -GW 9/11/14 S27683 and S27684 <br />Count Result Units <br />RL <br />Report Date: <br />Work Order: <br />%REC Low Limit High Limit RPD <br />09/30/14 <br />C14090497 <br />RPDLimit Qual <br />Method: <br />E300.0 <br />Analytical <br />Run: IC2- C_140915A <br />Lab ID: <br />CCV091514 -2 <br />2 Continuing Calibration Verification <br />Standard <br />09/15/14 16:23 <br />Chloride <br />9.82 mg /L <br />1.0 <br />98 <br />90 110 <br />Sulfate <br />39.6 mg /L <br />1.0 <br />99 <br />90 110 <br />Method: <br />E300.0 <br />Batch: R191126 <br />Lab ID: <br />ICB <br />2 Method Blank <br />Run: IC2 -C 140915A <br />09/15/14 12:01 <br />Chloride <br />ND mg /L <br />0.01 <br />Sulfate <br />0.1 mg /L <br />0.05 <br />Lab ID: <br />LFB091514 -1 <br />2 Laboratory Fortified Blank <br />Run: IC2- C_140915A <br />09/15/14 12:19 <br />Chloride <br />10.4 mg /L <br />1.0 <br />104 <br />90 110 <br />Sulfate <br />41.7 mg /L <br />1.0 <br />104 <br />90 110 <br />Lab ID: <br />C14090518- 001AMS <br />2 Sample Matrix Spike <br />Run: IC2- C_140915A <br />09/15/14 21:18 <br />Chloride <br />15.0 mg /L <br />1.0 <br />109 <br />90 110 <br />Sulfate <br />55.5 mg /L <br />1.0 <br />107 <br />90 110 <br />Lab ID: <br />C14090518- 001AMSD <br />2 Sample Matrix Spike Duplicate <br />Run: IC2- C_140915A <br />09/15/14 21:36 <br />Chloride <br />15.1 mg /L <br />1.0 <br />110 <br />90 110 0.8 <br />20 <br />Sulfate <br />55.8 mg /L <br />1.0 <br />108 <br />90 110 0.5 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - <br />Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 16 of 25 <br />