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Trust our People. Trust our Data. i Billings, MT 800.735.4489 • Casper, WY 888.235.0515 <br />College Station, TX 888.690.2218 • Gillette. WY 866.686.7175 • Helena, MT 877.472.0711 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: <br />Cotter Corporation <br />Report Date: <br />04/16/15 <br />Project: <br />Schwartz -GW 3/27/15 S28168,S28169 <br />Work Order: <br />C15030895 <br />F <br />Analyte <br />Count <br />Result Units <br />RL %aREC <br />Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: <br />E245.1 <br />nalytical Run: LOAN ER_CVAA_HG_QT_150403A <br />Lab ID: <br />ICV <br />Initial Calibration Verification Standard <br />04/03/15 10:23 <br />Mercury <br />0.00538 mg/L <br />0.00010 <br />108 <br />90 110 <br />Lab ID: <br />CCV <br />Continuing Calibration Verification <br />Standard <br />04/03/15 10:42 <br />Mercury <br />0.00514 mg/L <br />0.00010 <br />103 <br />90 110 <br />Method: <br />E245.1 <br />Batch: 44305 <br />Lab ID: <br />MB -44305 <br />Method Blank <br />Run: LOANER CVAA HG QT 150 <br />04/03/15 10:34 <br />Mercury <br />ND mg/L <br />0.0001 <br />Lab ID: <br />LCS-44305 <br />Laboratory Control Sample <br />Run: LOAN ER_CVAA_HG_QT_150 <br />04/03/15 10:35 <br />Mercury <br />0.00548 mg/L <br />0.00010 <br />110 <br />85 115 <br />Lab ID: <br />C15030895-002BMS <br />Sample Matrix Spike <br />Run: LOANER_CVAA_HG_QT_150 <br />04/03/15 10:39 <br />Mercury <br />0.00520 mg/L <br />0.00010 <br />104 <br />75 125 <br />Lab ID: <br />C15030895-002BMSD <br />Sample Matrix Spike Duplicate <br />Run: LOAN ER_CVAA_HG_QT_150 <br />04/03/15 10:40 <br />Mercury <br />0.00512 mg/L <br />0.00010 <br />102 <br />75 125 1.7 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - Not detected at the reporting limit. <br />MDC - Minimum <br />detectable concentration <br />Page 9 of 17 <br />