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• www.ewgylab.com Helena, Wr 871- 472 -0711 • Billings, Mr 600 -735 -4409 • Casper, WY 888 - 235 -0515 <br />LW •29- 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 <br />Report Date: <br />09/24/14 <br />Project: Schwartz -GW 9/4/14 S27662 <br />Work Order: <br />C14090228 <br />Analyte Count Result Units <br />RL %REC <br />Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A5310 C <br />Analytical Run: TOC3- C_140908A <br />Lab ID: ICV -8116 <br />Initial Calibration Verification Standard <br />09/08/14 12:07 <br />Organic Carbon, Total (TOC) <br />10.0 mg /L <br />0.50 <br />100 <br />90 110 <br />Lab ID: CCV -7923 <br />Continuing Calibration Verification Standard <br />09/08/14 12:22 <br />Organic Carbon, Total (TOC) <br />10.0 mg /L <br />0.50 <br />100 <br />90 110 <br />Method: A5310 C <br />Batch: R190810 <br />Lab ID: MBLK <br />Method Blank <br />Run: TOC3 -C 140908A <br />09/08/14 11:48 <br />Organic Carbon, Total (TOC) <br />ND mg /L <br />0.03 <br />Lab ID: 014090214- 001BMS <br />Sample Matrix Spike <br />Run: TOC3- C_140908A <br />09/08/14 12:54 <br />Organic Carbon, Total (TOC) <br />8.61 mg /L <br />0.50 <br />103 <br />85 115 <br />Lab ID: C14090214- 001BMSD <br />Sample Matrix Spike Duplicate <br />Run: TOC3- C_140908A <br />09/08/14 13:09 <br />Organic Carbon, Total (TOC) <br />9.15 mg /L <br />0.50 <br />114 <br />85 115 6.1 <br />10 <br />Lab ID: LCS -8116 <br />Laboratory Control Sample <br />Run: TOC3- C_140908A <br />09/08/14 15:50 <br />Organic Carbon, Total (TOC) <br />10.00 mg /L <br />0.50 <br />100 <br />90 110 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 4 of 14 <br />