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• www.awdab.com <br />� Helena, W 871-472 -0711 - Billings, W 801 - 735 -4489 - Casper, WY 888 -235 -0515 <br />tgss <br />Gillette, WY 866 -686 -7175 - <br />Rapid City, SD 816 - 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 />Report Date: <br />03/10/15 <br />Project: <br />Schwartz -GW 01 -30 -15 <br />S28127, S28129 <br />Work Order: <br />C15020026 <br />Analyte <br />Count Result Units RL %REC <br />Low Limit High Limit RPD <br />RPDL[mit Qua[ <br />Method: <br />E245.1 <br />nalytical Run: LOAN ER_CVAA_HG_QT_150205A <br />Lab ID: <br />ICV <br />Initial Calibration Verification Standard <br />02/05/15 13:18 <br />Mercury <br />0.00545 mg /L 0.00010 109 <br />90 110 <br />Lab ID: <br />CCV <br />Continuing Calibration Verification Standard <br />02/05/15 13:37 <br />Mercury <br />0.00536 mg /L 0.00010 107 <br />90 110 <br />Method: <br />E245.1 <br />Batch: 150205A <br />Lab ID: <br />IPC <br />Instrument Performance Check Sample <br />Run: LOAN ER_CVAA_HG_QT_150 <br />02/05/15 13:26 <br />Mercury <br />0.00520 mg /L 0.00010 104 <br />95 105 <br />Method: <br />E245.1 <br />Batch: 43859 <br />Lab ID: <br />MB -43859 <br />Method Blank <br />Run: LOANER CVAA HG QT 150 <br />02/05/15 13:27 <br />Mercury <br />ND mg /L 0.0001 <br />Lab ID: <br />LCS -43859 <br />Laboratory Control Sample <br />Run: LOAN ER_CVAA_HG_QT_150 <br />02/05/15 13:29 <br />Mercury <br />0.00547 mg /L 0.00010 109 <br />85 115 <br />Lab ID: <br />C15010796- 001BMS <br />Sample Matrix Spike <br />Run: LOAN ER_CVAA_HG_QT_150 <br />02/05/15 13:33 <br />Mercury <br />0.00501 mg /L 0.00010 100 <br />75 125 <br />Lab ID: <br />C15010796- 001BMSD <br />Sample Matrix Spike Duplicate <br />Run: LOAN ER_CVAA_HG_QT_150 <br />02/05/15 13:34 <br />Mercury <br />0.00499 mg /L 0.00010 100 <br />75 125 0.4 <br />20 <br />Method: <br />E245.1 <br />nalytical Run: LOAN ER_CVAA_HG_QT_150309A <br />Lab ID: <br />ICV <br />Initial Calibration Verification Standard <br />03/09/15 14:33 <br />Mercury <br />0.00547 mg /L 0.00010 109 <br />90 110 <br />Method: <br />E245.1 <br />Batch: 150309A <br />Lab ID: <br />IPC <br />Instrument Performance Check Sample <br />Run: LOAN ER_CVAA_HG_QT_150 <br />03/09/15 14:41 <br />Mercury <br />0.00522 mg /L 0.00010 104 <br />95 105 <br />Method: <br />E245.1 <br />Batch: 44095 <br />Lab ID: <br />MB -44095 <br />Method Blank <br />Run: LOANER CVAA HG QT 150 <br />03/09/15 14:54 <br />Mercury <br />ND mg /L 0.0001 <br />Lab ID: <br />LCS -44095 <br />Laboratory Control Sample <br />Run: LOAN ER_CVAA_HG_QT_150 <br />03/09/15 14:55 <br />Mercury <br />0.00547 mg /L 0.00010 109 <br />85 115 <br />Lab ID: <br />C15020769- 002DMS <br />Sample Matrix Spike <br />Run: LOAN ER_CVAA_HG_QT_150 <br />03/09/15 15:01 <br />Mercury <br />0.00550 mg /L 0.00010 110 <br />75 125 <br />Lab ID: <br />C15020769- 002DMSD <br />Sample Matrix Spike Duplicate <br />Run: LOAN ER_CVAA_HG_QT_150 <br />03/09/15 15:02 <br />Mercury <br />0.00492 mg /L 0.00010 98 <br />75 125 11 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 9 of 18 <br />