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• IPV=M www.enerdab.com � Helena, lIr 877 -472 -0711 • Billings, M1 800 - 735-4489 • Casper, WY 888- 235 -8515 <br />Gillette, WY 866 -686 -7175 • Rapid City, So BBB- 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: 06/27/13 <br />Project: Schwartz SW 5/21/13 S26991 - S26995 Work Order: C13050860 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: D2036C Analytical Run: SUB- B205330 <br />Sample ID: ICV Initial Calibration Verification Standard 05/28/13 09:51 <br />Cyanide, Weak Acid Dissociable 0.102 mg /L 0.0050 102 90 110 <br />Method: D2036C <br />Batch: B_R205330 <br />Sample ID: LFB <br />Laboratory Fortified Blank <br />Run: SUB- B205330 <br />05/28/13 09:54 <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- B205330 <br />05/28/13 09:56 <br />Cyanide, Weak Acid Dissociable <br />ND mg /L <br />0.002 <br />Sample ID: B13052038- 021EMS <br />Sample Matrix Spike <br />Run: SUB- B205330 <br />05/28/13 11:43 <br />Cyanide, Weak Acid Dissociable <br />0.105 mg /L <br />0.0050 <br />105 80 120 <br />Sample ID: 813052038 -021 EMSD <br />Sample Matrix Spike Duplicate <br />Run: SUB- B205330 <br />05/28/13 11:46 <br />Cyanide, Weak Acid Dissociable <br />0.101 mg /L <br />0.0050 <br />101 80 120 <br />3.9 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit <br />Page 13 of 31 <br />