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Trust our People. Trust our Data. 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 />04/10/15 <br />Project: <br />Schwartz -GW 3/25/15 S28144,S28145 <br />Work Order: <br />C15030828 <br />Analyte <br />Run: LOANER CVAA HG QT 150 <br />Count Result Units RL %REC <br />Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: <br />E245.1 <br />nalytical Run: LOANER_CVAA_HG_QT_150330A <br />Lab ID: <br />ICV <br />Initial Calibration Verification Standard <br />03/30/15 14:39 <br />Mercury <br />Mercury <br />0.00514 mg/L 0.00010 <br />103 90 110 <br />0.00010 <br />Lab ID: <br />CCV <br />Continuing Calibration Verification Standard <br />C15030861-001BMS <br />03/30/15 15:03 <br />Mercury <br />Run: LOAN ER_CVAA_HG_QT_150 <br />0.00547 mg/L 0.00010 <br />109 90 110 <br />Method: <br />E245.1 <br />101 75 125 <br />Batch: 150330A <br />Lab ID: <br />IPC <br />Instrument Performance Check Sample <br />Run: LOAN ER_CVAA_HG_QT_150 <br />03/30/15 14:44 <br />Mercury <br />0.00495 mg/L 0.00010 <br />99 95 105 <br />102 75 125 0.4 <br />Method: <br />E245.1 <br />Batch: 44259 <br />Lab ID: <br />MB -44259 <br />Method Blank <br />Run: LOANER CVAA HG QT 150 <br />03/30/15 14:46 <br />Mercury <br />ND mg/L <br />0.0001 <br />Lab ID: <br />LCS-44259 <br />Laboratory Control Sample <br />Run: LOANER_CVAA_HG_QT_150 <br />03/30/15 14:47 <br />Mercury <br />0.00513 mg/L <br />0.00010 <br />103 85 115 <br />Lab ID: <br />C15030861-001BMS <br />Sample Matrix Spike <br />Run: LOAN ER_CVAA_HG_QT_150 <br />03/30/15 14:57 <br />Mercury <br />0.00506 mg/L <br />0.00010 <br />101 75 125 <br />Lab ID: <br />C15030861-001BMSD <br />Sample Matrix Spike Duplicate <br />Run: LOAN ER_CVAA_HG_QT_150 <br />03/30/15 14:59 <br />Mercury <br />0.00508 mg/L <br />0.00010 <br />102 75 125 0.4 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 7 of 15 <br />