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• www.efwdab.com ( Helena, MT 877- 472 -0711 • Billings, MT 808 -735 -4489 • Casper, WY 888 -235 -0515 <br />a ' Ts31 JI Gillette, WY 866 -686 -7175 • Rapid City, so 886 -672 -1225 • College Station, TX 888 -680 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz 5/16/13 S26976- S26978 & S26980- S26983 <br />Analyte Count Result Units <br />Method: E200.8 <br />Sample ID: ICV Initial Calibration Verification <br />Silver 0.0206 mg /L <br />Report Date: 06/12/13 <br />Work Order: C13050679 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Analytical Run: ICPMS4- C_130606A <br />Standard 06/06/13 17.14 <br />0.0010 103 90 110 <br />Method: E200.8 <br />Sample ID: MB -37568 Method Blank Run: ICPMS4- C_130606A <br />Silver ND mg /L 0.0002 <br />Sample ID: LCS3 -37568 Laboratory Control Sample Run: ICPMS4- C_130606A <br />Silver 0.0509 mg /L 0.0010 102 85 115 <br />Sample ID: C13050655- 002AMS3 Sample Matrix Spike Run: ICPMS4- C_130606A <br />Silver 0.0386 mg /L 0.0010 77 70 130 <br />Sample ID: C13050655- 002AMSD Sample Matrix Spike Duplicate Run: ICPMS4- C_130606A <br />Silver 0.0392 mg /L 0.0010 78 70 130 <br />Qualifiers: <br />RL - Analyte reporting limit <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Batch: 37568 <br />06/07/13 00:07 <br />06/07/13 00:12 <br />06/07/13 00:33 <br />06/07/13 00:37 <br />1.5 20 <br />Page 21 of 37 <br />