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" wwwtfwulab.com J Helena, MT 877- 472 -0711 • Billings, W 800- 735 -4489 • Casper, WY 888- 235 -0515 <br />�1tl°Q' 1158 Gillette, WY 866 -686 -7175 • Rapid City, SD 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 />E245.1 <br />Report Date: <br />07/30/13 <br />Project: Schwartz -GW 7/3/13 S27057 <br />Work Order: <br />013070189 <br />Analyte <br />Count Result Units RL <br />° /diEC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: E245.1 <br />Mercury <br />Analytical Run: CVAA_C203_130710A <br />Sample ID: ICV <br />Initial Calibration Verification Standard <br />07/10/13 15.37 <br />Mercury <br />0.00551 mg /L 0.00010 <br />110 90 110 <br />Method: E245.1 <br />07/10/13 15:50 <br />Mercury <br />Batch: 130710A <br />Sample ID: IPC <br />Instrument Performance Check Sample <br />Run: CVAA_C203_130710A <br />07/10/13 15:46 <br />Mercury <br />0.00510 mg /L 0.00010 <br />102 95 105 <br />Method: <br />E245.1 <br />Batch: 38193 <br />Sample ID: <br />MB -38193 <br />Method Blank <br />Run: CVAA_C203_130710A <br />07/10/13 15:49 <br />Mercury <br />ND mg /L <br />7E -05 <br />Sample ID: <br />LCS -38193 <br />Laboratory Control Sample <br />Run: CVAA_C203_130710A <br />07/10/13 15:50 <br />Mercury <br />0.00564 mg /L <br />0.00010 <br />113 85 115 <br />Sample ID: <br />C13070189 -001 DMS <br />Sample Matrix Spike <br />Run: CVAA_C203_130710A <br />07/10/13 15:53 <br />Mercury <br />0.00746 mg /L <br />0.00010 <br />149 70 130 <br />S <br />Sample ID: <br />C13070189 -001 DMSD <br />Sample Matrix Spike Duplicate <br />Run: CVAA_C203_130710A <br />07/10/13 15:54 <br />Mercury <br />0.00761 mg /L <br />0.00010 <br />152 70 130 1.9 <br />10 S <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />Page 12 of 20 <br />