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wwwoe &ab.com Helena, MT 677472 -0711 • Billings, MT 800 - 735 -4489 • Casper, WY 888- 235 -0515 <br />ry Aea)" Exca9eeu U- 1952 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: 02/06/13 <br />Project: Schwartz GW 1/22/13 SSTF: S26783 Work Order: C13010694 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E300.0 Analytical Run: IC1- C_130124A <br />Sample ID: ICV- 012413 -11 2 Initial Calibration Verification Standard 01/24/13 14:53 <br />Chloride 9.86 mg /L 1.0 99 90 110 <br />Sulfate 40.1 mg /L 1.0 100 90 110 <br />Method: E300.0 <br />Sample ID: ICB- 012413 -12 <br />2 Method Blank <br />Chloride <br />ND mg /L <br />Sulfate <br />0.2 mg /L <br />Sample ID: LFB- 012413 -13 <br />2 Laboratory Fortified Blank <br />Chloride <br />10.3 mg /L <br />Sulfate <br />41.5 mg /L <br />Sample ID: C13010707 -004BMS <br />2 Sample Matrix Spike <br />Chloride <br />24.5 mg /L <br />Sulfate <br />101 mg /L <br />Sample ID: C13010707 -004BMSD <br />2 Sample Matrix Spike Duplicate <br />Chloride <br />24.6 mg /L <br />Sulfate <br />100 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 12 of 19 <br />Batch: R169571 <br />Run: IC1 -C-1 30124A <br />01/24/1315:10 <br />0.04 <br />0.05 <br />Run: IC1 -C 130124A <br />01/24/1315:28 <br />1.0 <br />103 <br />90 110 <br />1.0 <br />103 <br />90 110 <br />Run: ICI -C-1 30124A <br />01/25/1313:05 <br />1.0 <br />103 <br />90 110 <br />1.7 <br />104 <br />90 110 <br />Run: IC 1- C_130124A <br />01/25/13 13:22 <br />1.0 <br />104 <br />90 110 <br />0.2 20 <br />1.7 <br />104 <br />90 110 <br />0.1 20 <br />ND - Not detected at the reporting limit. <br />Page 12 of 19 <br />