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• www.enerd'b.com ( Helena, Mr 877- 472 -0711 - Billings, Mr 800 - 735-4489 - Casper, WY 888- 235 -8515 <br />"gN1Qf smca 1i%Y JI Gillette, WY 866-686 -7175 - Rapid City, SD 886 - 672 -1225 • College station, YX 888 -690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 10/02/13 <br />Project: Schwartz SW 9/5/13 S27130 Work Order: C13090203 <br />Analyte Count Result Units RL %REC 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 14:09 <br />Mercury 0.00519 mg /L 0.00010 104 90 110 <br />Method: E245.1 Batch: 130910a <br />Sample ID: [PC Instrument Performance Check Sample Run: CVAA_C203_130910A 09/10/13 14:17 <br />Mercury 0.00521 mg /L 0.00010 104 95 105 <br />Method: E245.1 <br />Sample ID: MB -38950 <br />Mercury <br />Sample ID: LCS -38950 <br />Mercury <br />Sample ID: C13090078- 002BMS <br />Mercury <br />Sample ID: C13090078- 002BMSD <br />Mercury <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Method Blank <br />ND mg /L <br />7E -05 <br />Laboratory Control Sample <br />0.00527 mg /L <br />0.00010 <br />Sample Matrix Spike <br />0.00445 mg /L <br />0.00010 <br />Sample Matrix Spike Duplicate <br />0.00450 mg /L <br />0.00010 <br />Run: CVAA_C203_130910A <br />Run: CVAA_C203_130910A <br />105 85 115 <br />Run: CVAA_C203_130910A <br />89 70 130 <br />Run: CVAA_C203_130910A <br />90 70 130 1 0 <br />ND - Not detected at the reporting limit. <br />Batch: 38950 <br />09/10/13 14.20 <br />09/10/13 14:21 <br />09/10/13 14:59 <br />09/10/13 15:01 <br />10 <br />Page 16 of 25 <br />