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www.ertr&b.com Helena, NT 877- 472 -0711 - Billings, W 800- 735 -4489 - Casper, WY 888 -235 -0515 <br />"'Q'siamtJU Gillette, WY 866 - 686 -7115 - 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 <br />E200.8 <br />Report Date: <br />06/13/13 <br />Project: Schwartz GW 5/20/13 <br />S26987 & S26988 <br />Work Order: <br />013050760 <br />FAnalyte <br />Count Result Units RL <br />%REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: E200.8 <br />06/05/13 15:21 <br />Analytical Run: ICPMS2- C_130605A <br />Sample ID: ICV <br />2 Initial Calibration Verification Standard <br />0.0001 <br />06/05/13 18:52 <br />Copper <br />0.0509 mg /L 0.0010 <br />102 90 110 <br />Zinc <br />0.0509 mg /L 0.0010 <br />102 90 110 <br />Method: <br />E200.8 <br />Batch: R174445 <br />Sample ID: <br />LRB <br />2 Method Blank <br />Run: ICPMS2- C_130605A <br />06/05/13 15:21 <br />Copper <br />ND mg /L <br />0.0001 <br />Zinc <br />ND mg /L <br />0.0006 <br />Sample ID: <br />LFB <br />2 Laboratory Fortified Blank <br />Run: ICPMS2- C_130605A <br />06/05/13 15:24 <br />Copper <br />0.0551 mg /L <br />0.0010 <br />110 <br />85 115 <br />Zinc <br />00557 mg /L <br />0.0010 <br />111 <br />85 115 <br />Sample ID: <br />C13051120 -001 AMS4 <br />2 Sample Matrix Spike <br />Run: ICPMS2- C_130605A <br />06/05/13 19:11 <br />Copper <br />0.0553 mg /L <br />0.0050 <br />107 <br />70 130 <br />Zinc <br />0.0617 mg /L <br />0.010 <br />110 <br />70 130 <br />Sample ID: <br />C13051120 -001 AMSD4 <br />2 Sample Matrix Spike Duplicate <br />Run. ICPMS2- C_130605A <br />06/05/13 19:14 <br />Copper <br />0.0560 mg /L <br />0.0050 <br />108 <br />70 130 1.2 <br />20 <br />Zinc <br />0.0629 mg /L <br />0.010 <br />113 <br />70 130 1.8 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 12 of 24 <br />