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• www.enerdab.com Helena, Ili 877 - 472 -0711 - Billings, MY 600- 735 -4489 • Casper, WY 888 - 235 -0515 <br />Gillette, wY 866 -886 -7175 • Rapid City, SO 888 -672 -1225 - College Station, TX 888 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />06/27/13 <br />Project: Schwartz SW 5/22/13 S26997 TH S26998 <br />Work Order: <br />013050907 <br />Analyte <br />Count Result Units RL %REC Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: E300.0 <br />Run: IC1- C_130528A <br />Analytical Run: IC1- C_130528A <br />Sample ID: CCV- 052813 -04 <br />2 Continuing Calibration Verification Standard <br />ND mg /L <br />05/29/13 05:16 <br />Chloride <br />9.46 mg /L 1.0 95 90 <br />110 <br />Sulfate <br />Sulfate <br />37.9 mg /L 1.0 95 90 <br />110 <br />Method: E300.0 <br />Batch: R174147 <br />Sample ID: ICB- 052813 -01 <br />2 <br />Method Blank <br />Run: IC1- C_130528A <br />05/28/13 16:48 <br />Chloride <br />ND mg /L <br />0.07 <br />Sulfate <br />0.2 mg /L <br />0.08 <br />Sample ID: LFB- 052813 -01 <br />2 <br />Laboratory Fortified Blank <br />Run: IC1- C_130528A <br />05/28/13 17:05 <br />Chloride <br />9.34 mg /L <br />1.0 <br />93 <br />90 110 <br />Sulfate <br />37.6 mg /L <br />1.0 <br />94 <br />90 110 <br />Sample ID: C13050907- 001BMS <br />2 <br />Sample Matrix Spike <br />Run: IC1- C_130528A <br />05/29/13 06:26 <br />Chloride <br />225 mg /L <br />4.2 <br />95 <br />90 110 <br />Sulfate <br />773 mg /L <br />17 <br />94 <br />90 110 <br />Sample ID: C1 3050907-001 BMSD <br />2 <br />Sample Matrix Spike Duplicate <br />Run: IC1- C_130528A <br />05/29/13 06:43 <br />Chloride <br />219 mg /L <br />4.2 <br />92 <br />90 110 <br />2.4 20 <br />Sulfate <br />752 mg /L <br />17 <br />91 <br />90 110 <br />2.7 20 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 20 of 29 <br />