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• PLO www- ecergyiati.com _ Helena, MT 877 -472 -0711 •Billings, MT 800 - 735 -4489 • Casper, WY 888- 235 -0515 <br />'t Gillette, WY 866 -686 -7175 • Rapid City, SD 866 -672 -1225 • College Station, TX 868 - 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />12/05/13 <br />Project: Schwartz GW 11/15/13 S27276 <br />Work Order: <br />C13110695 <br />[Analyte <br />Count Result Units <br />RL <br />%REC <br />Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: <br />E245.1 <br />Analytical Run: CVAA_C203_131121A <br />Sample ID: <br />ICV <br />Initial Calibration Verification Standard <br />11/21/13 15:18 <br />Mercury <br />0.00505 mg /L <br />0.00010 <br />101 <br />90 110 <br />Method: <br />E245.1 <br />Batch: 131121A <br />Sample ID: <br />IPC <br />Instrument Performance Check Sample <br />Run: CVAA_C203_131121 A <br />11/21/13 15:22 <br />Mercury <br />0.00518 mg /L <br />0.00010 <br />104 <br />95 105 <br />Method: <br />E245.1 <br />Batch: 39856 <br />Sample ID: <br />MB -39856 <br />Method Blank <br />Run: CVAA_C203_131121A <br />11/21/13 15:25 <br />Mercury <br />ND mg /L <br />7E -05 <br />Sample ID: <br />LCS -39856 <br />Laboratory Control Sample <br />Run: CVAA_C203_131121A <br />11/21/13 15:27 <br />Mercury <br />0.00518 mg /L <br />0.00010 <br />104 <br />85 115 <br />Sample ID: <br />C13110806- 001BMS <br />Sample Matrix Spike <br />Run: CVAA_C203_131121A <br />11/21/13 15:39 <br />Mercury <br />0.00500 mg /L <br />0.00010 <br />100 <br />70 130 <br />Sample ID: <br />C13110806- 001BMSD <br />Sample Matrix Spike Duplicate <br />Run: CVAA_C203_131121A <br />11/21/13 15:41 <br />Mercury <br />0.00506 mg /L <br />0.00010 <br />101 <br />70 130 1.2 <br />10 <br />Oualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 13 of 21 <br />