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\ • lccl www.energ0ab.com ( Helena, MT 877- 472 -0711 • Billings, W 600- 735 -4489 • Casper, WY 888- 235 -0515 <br />ha' W Ewab= Sm IM � Gillette, WY 866 -686 -7175 • Rapid City, SD 866- 672 -1225 • College Station, TX 888 - 690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 05/29/13 <br />Project: Schwartz -SW 5/4/13 S26868 S26869 Work Order: C13050235 <br />Analyte Count Result Units RL ° /.REC Low Limit High Limit RPD RPDLimit Cual <br />Method: E245.1 Analytical Run: CVAA_C203_130508A <br />Sample ID: ICV Initial Calibration Verification Standard 05/08/13 11:20 <br />Mercury 0.00469 mg /L 0.00010 94 90 110 <br />Method: <br />E245.1 <br />Batch: 37431 <br />Sample ID: <br />MB -37431 <br />Method Blank <br />Run: CVAA_C203_130508A <br />05/08/13 13:24 <br />Mercury <br />ND mg /L <br />7E -05 <br />Sample ID: <br />LCS -37431 <br />Laboratory Control Sample <br />Run: CVAA_C203_130508A <br />05/08/13 13:26 <br />Mercury <br />0.00555 mg /L <br />0.00010 <br />111 <br />85 115 <br />Sample ID: <br />C13050235 -001 DMS <br />Sample Matrix Spike <br />Run: CVAA_C203_130508A <br />05/08/13 13:29 <br />Mercury <br />0.00539 mg /L <br />0.00010 <br />108 <br />70 130 <br />Sample ID: <br />C13050235 -001 DMSD <br />Sample Matrix Spike Duplicate <br />Run: CVAA_C203_130508A <br />05/08/13 13:31 <br />Mercury <br />0.00521 mg /L <br />0.00010 <br />104 <br />70 130 3.3 <br />10 <br />Method: <br />E245.1 <br />Batch: R173332 <br />Sample ID: <br />IPC <br />Instrument Performance Check <br />Sample <br />Run: CVAA_C203_130508A <br />05/08/13 11:33 <br />Mercury <br />0.00523 mg /L <br />0.00010 <br />105 <br />95 105 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 19 of 29 <br />