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• www.mwdab.com Helena, MT 877 - 472 -0711 • Billings, MT 801- 7354489 • Casper, WY 888- 235 -0515 <br />•'t 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: <br />Cotter Corporation <br />Lab ID: <br />Report Date: <br />02102/15 <br />Project: <br />Schwartz GW 1/14/15 S28103, S28106, S28107 <br />Work Order: <br />C15010389 <br />Analyte <br />Lab ID: <br />Count Result Units RL %REC Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: <br />E245.1 <br />Mercury <br />Analytical Run: CVAA_C203_150119A <br />Lab ID: <br />ICV <br />Initial Calibration Verification Standard <br />01/19/15 12:52 <br />Mercury <br />0.00517 mg /L 0.00020 103 90 <br />110 <br />Lab ID: <br />CCV <br />Continuing Calibration Verification Standard <br />01/19/15 13:08 <br />Mercury <br />0.00533 mg /L 0.00020 107 90 <br />110 <br />Method: E245.1 Batch: 140119A <br />Lab ID: IPC Instrument Performance Check Sample Run: CVAA_C203_150119A 01/19/15 12:57 <br />Mercury 0.00504 mg /L 0.00020 101 95 105 <br />Method: <br />E245.1 <br />Lab ID: <br />MB -43683 <br />Mercury <br />Lab ID: <br />LCS -43683 <br />Mercury <br />Lab ID: <br />C15010389- 001BMS <br />Mercury <br />Lab ID: <br />C15010389 -001 BMSD <br />Mercury <br />Method Blank <br />7E -05 mg /L <br />2E -05 <br />Laboratory Control Sample <br />0.00560 mg /L <br />0.00010 <br />Sample Matrix Spike <br />0.00514 mg /L <br />0.00010 <br />Sample Matrix Spike Duplicate <br />0.00505 mg /L <br />0.00010 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: CVAA_C203_150119A <br />Run: CVAA_C203_150119A <br />111 85 115 <br />Run: CVAAC203150119A <br />102 75 125 <br />Run: CVAA C203 150119A <br />100 75 125 1.7 <br />ND - Not detected at the reporting limit. <br />Batch: 43683 <br />01/19/15 13:11 <br />01/19/15 13:12 <br />01/19/15 13:23 <br />01/19/15 13:25 <br />20 <br />Page 10 of 19 <br />