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www.energylab.com Helena, MT 877- 472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888 -235 -0515 <br />Aad*atE 8ftWAm r95t Gillette, WY 866 - 606 -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 Report Date: 05/06/13 <br />Project: Schwartz GW 4/11/13 S26889 Work Order: 013040486 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E245.1 Analytical Run: CVAA_C203_130423A <br />Sample ID: ICV Initial Calibration Verification Standard 04/23/13 11:45 <br />Mercury 0.00495 mg /L 0.00010 99 90 110 <br />Method: E245.1 <br />Sample ID: IPC <br />Mercury <br />Instrument Performance Check Sample Run: CVAA_C203_130423A <br />0.00527 mg /L 0.00010 105 95 105 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Batch: R172770 <br />04/23/13 13:19 <br />Page 13 of 21 <br />Method: E245.1 <br />Batch: 37218 <br />Sample ID: MB -37218 <br />Method Blank <br />Run: CVAA_C203_130423A <br />04/23/13 11:48 <br />Mercury <br />ND mg /L <br />0.0001 <br />Sample ID: LCS -37218 <br />Laboratory Control Sample <br />Run: CVAA_C203_130423A <br />04/23/13 11:50 <br />Mercury <br />0.00494 mg /L <br />0.00010 <br />99 85 115 <br />Sample ID: C13040564 -001 EMS <br />Sample Matrix Spike <br />Run: CVAA_C203_130423A <br />04/23/13 11:57 <br />Mercury <br />0.00499 mg /L <br />0.00010 <br />100 70 130 <br />Sample ID: C13040564 -001EMSD <br />Sample Matrix Spike Duplicate <br />Run: CVAA_C203_130423A <br />04/23/13 11:59 <br />Mercury <br />0.00499 mg /L <br />000010 <br />100 70 130 0.1 <br />10 <br />Method: E245.1 <br />Sample ID: IPC <br />Mercury <br />Instrument Performance Check Sample Run: CVAA_C203_130423A <br />0.00527 mg /L 0.00010 105 95 105 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Batch: R172770 <br />04/23/13 13:19 <br />Page 13 of 21 <br />