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i 4.1, www.wwvab.com Helena, MT 077 -472 -0711 • Billings, MT 800 - 735 -4489 • Casper, WY 088- 235 -0515 <br />Aeaydr>l, Atli 2= IM I Gillette, WY 866 -686 -7175 • Rapid City, SD 886 -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: 07/08/13 <br />Project: Schwartz GW 6/6/2013 S26941 Work Order: C13060270 <br />Analyte Count Result Units RL ° /GREC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Analytical Run: ICPMS4- C_130628A <br />Sample ID: ICV Initial Calibration Verification Standard 06/28/13 18:47 <br />Silver 0.0197 mg /L 0.0010 98 90 110 <br />Method: <br />E200.8 <br />Sample ID: <br />MB -37830 <br />Method Blank <br />Silver <br />0.0002 mg /L <br />0.0002 <br />Sample ID: <br />LCS3 -37830 <br />Laboratory Control Sample <br />Silver <br />0.0450 mg /L <br />0.0010 <br />Sample ID: <br />C13060268 -001 BMS3 <br />Sample Matrix Spike <br />Silver <br />0.0480 mg /L <br />0.0010 <br />Sample lD: <br />C13060268 -001 BMSD3 <br />Sample Matrix Spike Duplicate <br />Silver <br />0.0494 mg /L <br />0.0010 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: ICPMS4- C_130628A <br />Run: ICPMS4- C_130628A <br />90 85 115 <br />Run: ICPMS4- C_130628A <br />96 70 130 <br />Run: ICPMS4- C_130628A <br />99 70 130 <br />ND - Not detected at the reporting limit. <br />Batch: 37830 <br />06/28/13 20:54 <br />06/28/13 20.59 <br />06/28/13 21.24 <br />06/28/13 21:27 <br />2.9 20 <br />Page 12 of 21 <br />