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• www.erverelab.com r Helena, MT 877- 472 -0711 • Billings, W 800- 735 -4489 • Casper, WY 888 - 235 -0515 <br />- AearyMrslEaSdars teas i Gillette, WY 866 -606 -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: 12/05/13 <br />Project: Schwartz GW 11/15/13 S27276 Work Order: C13110695 <br />Analyte Count Result Units RL ° /.REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Analytical Run: ICPMS4- C_131125A <br />Sample ID: ICV 3 Initial Calibration Verification Standard 11/25/13 23:38 <br />Copper <br />0.0521 <br />mg /L <br />0.0010 <br />104 <br />90 <br />110 <br />Lead <br />0.0508 <br />mg /L <br />0.0010 <br />102 <br />90 <br />110 <br />Silver <br />0.0203 <br />mg /L <br />0.0010 <br />102 <br />90 <br />110 <br />Method: <br />E200.8 <br />Sample ID: <br />MB -39814 <br />3 Method Blank <br />Copper <br />11/26/13 00:04 <br />ND mg /L <br />Lead <br />ND mg /L <br />Silver <br />ND mg /L <br />Sample ID: <br />LCS3 -39814 <br />3 Laboratory Control Sample <br />Copper <br />0.537 mg /L <br />Lead <br />Run: ICPMS4- C_131125A <br />0.521 mg /L <br />Silver <br />107 <br />0.0518 mg /L <br />Sample lD: <br />C13110695 -001 DMS3 <br />3 Sample Matrix Spike <br />Copper <br />1.02 mg /L <br />Lead <br />85 115 <br />1.05 mg /L <br />Silver <br />0.0984 mg /L <br />Sample ID: <br />C13110695 -001 DMSD3 <br />3 Sample Matrix Spike Duplicate <br />Copper <br />1.03 mg /L <br />Lead <br />70 130 <br />1.06 mg /L <br />Silver <br />98 <br />0.100 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 11 of 21 <br />Batch: 39814 <br />Run: ICPMS4 -C 131125A <br />11/26/13 00:04 <br />0.0002 <br />4E -05 <br />0.0002 <br />Run: ICPMS4- C_131125A <br />11/26/13 00:08 <br />0.0050 <br />107 <br />85 115 <br />0.0010 <br />104 <br />85 115 <br />0.0010 <br />104 <br />85 115 <br />Run: ICPMS4- C_131125A <br />11/26/13 00:21 <br />0.0050 <br />102 <br />70 130 <br />0.0010 <br />104 <br />70 130 <br />0.0010 <br />98 <br />70 130 <br />Run: ICPMS4- C_131125A <br />11/26/13 00:25 <br />0.0050 <br />102 <br />70 130 0.1 <br />20 <br />0.0010 <br />106 <br />70 130 1.1 <br />20 <br />0.0010 <br />100 <br />70 130 1.8 <br />20 <br />ND - Not detected at the reporting limit. <br />Page 11 of 21 <br />