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• www.tner&b.com ( Helena, MT 877- 472 -0711 * Billings, MT 800 - 735 -4489 - Casper, WY 888 - 235 -0515 <br />a AeaWtla►Eeallwa'9=1W J Gillette, WY 866 -606 -7175 - Rapid City, SO 886- 672 -1225 - College Station, TX 888 - 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />06/06/13 <br />Project: Schwartz GW 5/15/13 S26918 & S26919 <br />Work Order: <br />C13050708 <br />Analyte <br />Count Result Units <br />RL <br />%REC <br />Low Limit High Limit RPD <br />RPDLimit Dual <br />Method: <br />E245.1 <br />Analytical Run: CVAA_C203_130522A <br />Sample ID: <br />ICV <br />Initial Calibration Verification Standard <br />05/22/13 10:07 <br />Mercury <br />0.00512 mg /L <br />0.00010 <br />102 <br />90 110 <br />Method: <br />E245.1 <br />Batch: 37585 <br />Sample ID: <br />MB -37585 <br />Method Blank <br />Run: CVAA C203_130522A <br />05/22/13 10:14 <br />Mercury <br />ND mg /L <br />7E -05 <br />Sample ID: <br />LCS -37585 <br />Laboratory Control Sample <br />Run: CVAA_C203_130522A <br />05/22/13 10:15 <br />Mercury <br />000541 mg /L <br />0.00010 <br />108 <br />85 115 <br />Sample ID: <br />C13050681 -001 DMS <br />Sample Matrix Spike <br />Run: CVAA_C203_130522A <br />05/22/13 1040 <br />Mercury <br />0.00538 mg /L <br />0.00010 <br />108 <br />70 130 <br />Sample ID: <br />C13050681 -001 DMSD <br />Sample Matrix Spike Duplicate <br />Run: CVAA_C203_130522A <br />05/22/13 10:42 <br />Mercury <br />0.00518 mg /L <br />0.00010 <br />104 <br />70 130 3.8 <br />10 <br />Method: E245.1 Batch: R173886 <br />Sample ID: IPC Instrument Performance Check Sample Run: CVAA_C203_130522A 05/22/13 10:10 <br />Mercury 0.00519 mg /L 0.00010 104 95 105 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 16 of 25 <br />