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www.ew#ab.com Helena, MT 877- 472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888 -235 -0515 <br />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 />Client: Cotter Corporation Report Date: 05/29/13 <br />Project: Schwartz -SW 5/4/13 S26868 S26869 Work Order: C13050235 <br />Analyte Count Result Units RL ° /6REC Low Limit High Limit RPD RPDLimit Qual <br />Method: D2036C Analytical Run, SUB - 8204583 <br />Sample ID: ICV Initial Calibration Verification Standard 05/14/13 09:32 <br />Cyanide, Weak Acid Dissociable 0 100 mg /L 0.0050 100 90 110 <br />Method: D2036C <br />Batch: B R204583 <br />Sample ID: LFB <br />Laboratory Fortified Blank <br />Run: SUB - 6204583 <br />05/14/13 09:34 <br />Cyanide, Weak Acid Dissociable <br />0.101 mg /L <br />0.0050 <br />101 90 110 <br />Sample ID: MB <br />Method Blank <br />Run. SUB- B204583 <br />05/14/13 09:38 <br />Cyanide, Weak Acid Dissociable <br />0.003 mg /L <br />0.002 <br />Sample ID: C13050235 -002F <br />Sample Matrix Spike <br />Run: SUB- B204583 <br />05/14/13 10:26 <br />Cyanide, Weak Acid Dissociable <br />0.0996 mg /L <br />0.0050 <br />100 80 120 <br />Sample ID: C13050235 -002F <br />Sample Matrix Spike Duplicate <br />Run: SUB- B204583 <br />05/14/13 10:28 <br />Cyanide, Weak Acid Dissociable <br />0.0998 mg /L <br />0.0050 <br />100 80 120 <br />02 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 11 of 29 <br />