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• /�; Trust our People. Trust our Data. Billings. MT 800.735.4489 • Casper. WY 888.235.0515 <br />l 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 />05/20/15 <br />Project: <br />Schwartz - GW 4/21/15 S27905, S27908 <br />Work Order: <br />C15040681 <br />Analyte <br />Count Result Units RL <br />%REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: <br />E245.1 <br />Analytical Run: CVAA_C203_150514A <br />Lab ID: <br />ICV Initial Calibration Verification Standard <br />05/14/15 11:11 <br />Mercury <br />0.00544 mg/L 0.00010 <br />109 90 110 <br />Lab ID: CCV Continuing Calibration Verification Standard 05/14/15 11:39 <br />Mercury 0.00514 mg/L 0.00010 103 90 110 <br />Method: E245.1 Batch: 150514A <br />Lab ID: IPC Instrument Performance Check Sample Run: CVAA_C203_150514A 05/14/15 11:19 <br />Mercury 0.00519 mg/L 0.00010 104 95 105 <br />Method: <br />E245.1 <br />Lab ID: <br />MB -44658 <br />Mercury <br />Lab ID: <br />LCS-44658 <br />Mercury <br />Lab ID: <br />C15040882-002BMS <br />Mercury <br />Lab ID: <br />C15040882-002BMSD <br />Mercury <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Method Blank <br />ND mg/L <br />0.0002 <br />Laboratory Control Sample <br />0.00560 mg/L <br />0.00010 <br />Sample Matrix Spike <br />0.00503 mg/L <br />0.00010 <br />Sample Matrix Spike Duplicate <br />0.00502 mg/L <br />0.00010 <br />Run: CVAA_C203_150514A <br />Run: CVAA_C203_150514A <br />112 85 115 <br />Run: CVAA_C203_150514A <br />101 75 125 <br />Run: CVAA_C203_150514A <br />100 75 125 0.4 <br />ND - Not detected at the reporting limit. <br />Batch: 44658 <br />05/14/15 11:21 <br />05/14/15 11:22 <br />05/14/15 11:35 <br />05/14/15 11:36 <br />20 <br />Page 12 of 21 <br />