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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 />04/23/15 <br />Project: <br />Schwartz -SW 4/02/15 S27828 <br />Work Order: <br />C15040126 <br />Analyte <br />ND mg/L <br />Count Result Units RL <br />%REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: <br />E245.1 <br />Mercury <br />nalytical Run: LOAN ER_CVAA_HG_QT_150415A <br />Lab ID: <br />ICV <br />Initial Calibration Verification Standard <br />C15040126-001CMS <br />04/15/15 10:27 <br />Mercury <br />Mercury <br />0.00545 mg/L 0.00010 <br />109 90 110 <br />0.00010 <br />Lab ID: <br />CCB <br />Continuing Calibration Blank <br />04/15/15 10:49 <br />Mercury <br />0.00491 mg/L <br />-2.21 E-06 mg/L 0.00010 <br />Method: <br />E245.1 <br />Batch: 150415A <br />Lab ID: <br />IPC <br />Instrument Performance Check Sample <br />Run: LOAN ER_CVAA_HG_QT_150 <br />04/15/15 10:33 <br />Mercury <br />0.00500 mg/L 0.00010 <br />100 95 105 <br />Method: <br />E245.1 <br />Lab ID: <br />MB -44399 <br />Method Blank <br />Mercury <br />ND mg/L <br />0.0001 <br />Lab ID: <br />LCS-44399 <br />Laboratory Control Sample <br />Mercury <br />0.00527 mg/L <br />0.00010 <br />Lab ID: <br />C15040126-001CMS <br />Sample Matrix Spike <br />Mercury <br />0.00488 mg/L <br />0.00010 <br />Lab ID: <br />C15040126-001CMSD <br />Sample Matrix Spike Duplicate <br />Mercury <br />0.00491 mg/L <br />0.00010 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: LOANER CVAA HG QT 150 <br />Run: LOAN ER_CVAA_HG_QT_150 <br />105 85 115 <br />Run: LOAN ER_CVAA_HG_QT_150 <br />98 75 125 <br />Run: LOAN ER_CVAA_HG_QT_150 <br />98 75 125 0.7 <br />ND - Not detected at the reporting limit. <br />Batch: 44399 <br />04/15/15 10:34 <br />04/15/15 10:36 <br />04/15/15 10:38 <br />04/15/15 10:40 <br />20 <br />Page 14 of 23 <br />