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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: Cotter Corporation <br />Project: Schwartz - GW 4/14/15 S27854, S27857 <br />Analyte Count Result Units <br />Method: E245.1 <br />Report Date: 05/07/15 <br />Work Order: C15040486 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Lab ID: ICV Initial Calibration Verification Standard <br />Mercury 0.00539 mg/L 0.00010 <br />nalytical Run: LOAN ER_CVAA_HG_QT_150417A <br />04/17/15 10:51 <br />108 90 110 <br />Method: E245.1 Batch: 150417A <br />Lab ID: IPC Instrument Performance Check Sample Run: LOAN ER_CVAA_HG_QT_150 04/17/15 11:00 <br />Mercury 0.00514 mg/L 0.00010 103 95 105 <br />Method: <br />E245.1 <br />Lab ID: <br />MB -44426 <br />Mercury <br />0.0001 <br />Lab ID: <br />LCS-44426 <br />Mercury <br />Lab ID: <br />015040475-001IMS <br />Mercury <br />0.00010 <br />Lab ID: <br />C15040475-001IMSD <br />Mercury <br />Lab ID: <br />C15040486-002BMS <br />Mercury <br />0.00010 <br />Lab ID: <br />015040486-002BMSD <br />Mercury <br />Method Blank <br />Run: LOANER CVAA HG QT 150 <br />ND mg/L <br />0.0001 <br />Laboratory Control Sample <br />Run: LOAN ER_CVAA_HG_QT_150 <br />0.00536 mg/L <br />0.00010 <br />107 <br />85 115 <br />Sample Matrix Spike <br />Run: LOAN ER_CVAA_HG_QT_150 <br />0.00491 mg/L <br />0.00010 <br />98 <br />75 125 <br />Sample Matrix Spike Duplicate <br />Run: LOAN ER_CVAA_HG_QT_150 <br />0.00511 mg/L <br />0.00010 <br />102 <br />75 125 4.0 <br />Sample Matrix Spike <br />Run: LOANER_CVAA_HG_QT_150 <br />0.00505 mg/L <br />0.00010 <br />101 <br />75 125 <br />Sample Matrix Spike Duplicate <br />Run: LOAN ER_CVAA_HG_QT_150 <br />0.00508 mg/L <br />0.00010 <br />102 <br />75 125 0.7 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Batch: 44426 <br />04/17/15 11:01 <br />04/17/15 11:03 <br />04/17/1511:17 <br />04/17/15 11:19 <br />20 <br />04/17/15 11:23 <br />04/17/15 11:24 <br />20 <br />Page 20 of 30 <br />