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www- mwgoab.com ( Helena, W 877 -472 -0711 • Billings, W 600 - 735 -4489 • Casper, WY 888 - 235 -8515 <br />h**WEh.Sk.1W J Gillette, WY 866 -686 -7175 ' Rapid City, SO 888 -672 -1225 ' College Station, TX 888 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Revised Date: 09/04/13 <br />Client: Cotter Corporation Report Date: 09/03/13 <br />Project: Schwartz -SW 8/6/13 S27020 Work Order: C13080303 <br />[ Analyte Count Result Units RL ° /diEC Low Limit High Limit RPD RPDLimit Oual <br />Method: D2036C Analytical Run: SUB - 8209889 <br />Sample ID: ICV Initial Calibration Verification Standard 08/13/13 12:14 <br />Cyanide, Weak Acid Dissociable 0.0946 mg /L 0.0050 95 90 110 <br />Method: D2036C <br />Batch: B R209889 <br />Sample ID: LFB <br />Laboratory Fortified Blank <br />Run: SUB - 6209889 <br />08/13/13 12:17 <br />Cyanide, Weak Acid Dissociable <br />0.0992 mg /L <br />0.0050 <br />99 90 110 <br />Sample ID: ICB <br />Method Blank <br />Run: SUB- B209889 <br />08/13/13 12:19 <br />Cyanide, Weak Acid Dissociable <br />ND mg /L <br />0.002 <br />Sample ID: B13080705- 004DMS <br />Sample Matrix Spike <br />Run: SUB- B209889 <br />08/13/13 13:16 <br />Cyanide, Weak Acid Dissociable <br />0.0928 mg /L <br />0.0050 <br />93 80 120 <br />Sample ID: B13080705- 004DMSD <br />Sample Matrix Spike Duplicate <br />Run: SUB- B209889 <br />08/13/13 13.19 <br />Cyanide, Weak Acid Dissociable <br />00946 mg /L <br />0.0050 <br />95 80 120 <br />1.9 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 9 of 26 <br />