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www.mwgoab.com ( Helena, MT 871472 -0711 • Billings, MT 800 - 7354489 • Casper, WY 888- 235 -0515 <br />" ~Ewshm Nei ylgt J Gillette, WY 866 -686 -7175 • Rapid City, SO 886 - 672 -1225 • College Station, TX 868- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 09/30/13 <br />Project: Schwartz SW 09/05/13 S27131 Work Order: C13090222 <br />Analyte Count Result Units RL ° /diEC Low Limit High Limit RPD RPDLimit Qual <br />Method: E245.1 Analytical Run: CVAA_C203_130910A <br />Sample ID: ICV Initial Calibration Verification Standard 09/10/13 15:51 <br />Mercury 0.00511 mg /L 0.00010 102 90 110 <br />Method: E245.1 Batch: 130910a <br />Sample ID: IPC Instrument Performance Check Sample Run: CVAA_C203_130910A 09/10/13 15:54 <br />Mercury 0.00523 mg /L 0.00010 105 95 105 <br />Method: <br />E245.1 <br />Sample ID: <br />MB -38951 <br />Mercury <br />Sample ID: <br />LCS -38951 <br />Mercury <br />Sample ID: <br />013090222 -001 DMS <br />Mercury <br />Sample ID: <br />013090222 -001 DMSD <br />Mercury <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Method Blank <br />ND mg /L <br />Laboratory Control Sample <br />0.00443 mg /L <br />Sample Matrix Spike <br />0.00501 mg /L <br />Sample Matrix Spike Duplicate <br />0.00492 mg /L <br />Run: CVAA_C203_130910A <br />7E -05 <br />Run CVAA_C203_130910A <br />0.00010 89 85 115 <br />Run: CVAA_C203_130910A <br />0.00010 100 70 130 <br />Run: CVAA_C203_130910A <br />0.00010 98 70 130 1.8 <br />ND - Not detected at the reporting limit. <br />Batch: 38951 <br />09/10/13 15:57 <br />09/10/13 15:59 <br />09/10/13 16:37 <br />09/10/13 16:38 <br />10 <br />Page 18 of 27 <br />