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C - www.ererdab.com Helena, lilt 877 -472 -0711 • Billings, W 800- 735.4489 • Casper, WY 888- 235 -0515 <br />Af°• ' 1 2 Gillette, WY 866 -686 -7175 • Rapid City, SD 886 -672 -1225 • College Station, A 888- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz SW 5/21/13 S26991 - S26995 <br />Analyte Count Result Units <br />Method: E300.0 <br />Run: IC1- C_130528A <br />Sample ID: ICB- 052813 -01 <br />2 Method Blank <br />Chloride <br />ND mg /L <br />Sulfate <br />0.2 mg /L <br />Sample ID: LFB -052813 -01 <br />2 Laboratory Fortified Blank <br />Chloride <br />9.34 mg /L <br />Sulfate <br />37.6 mg /L <br />Sample ID: C13050861- 003BMS <br />2 Sample Matrix Spike <br />Chloride <br />14.6 mg /L <br />Sulfate <br />47.2 mg /L <br />Sample ID: C13050861- 003BMSD <br />2 Sample Matrix Spike Duplicate <br />Chloride <br />14.9 mg /L <br />Sulfate <br />48.1 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 06/27/13 <br />Work Order: C13050860 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: R174147 <br />Run: [Cl- C_130528A 05/28/13 16:48 <br />0.07 <br />0.08 <br />ND - Not detected at the reporting limit. <br />Page 20 of 31 <br />Run: IC1- C_130528A <br />05/28/13 17:05 <br />1.0 <br />93 <br />90 110 <br />1.0 <br />94 <br />90 110 <br />Run: [Cl- C_130528A <br />05/28/13 22:01 <br />1.0 <br />104 <br />90 110 <br />1.0 <br />100 <br />90 110 <br />Run: IC1- C_130528A <br />05/28/13 22:18 <br />1.0 <br />106 <br />90 110 <br />1.6 20 <br />1.0 <br />102 <br />90 110 <br />2.0 20 <br />ND - Not detected at the reporting limit. <br />Page 20 of 31 <br />