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www.enereab.com Helena, MT 877- 472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888 - 235 -8515 <br />" 'Sm "92 f Gillette, WY 866 -686 -7175 • Rapid City, SD 886- 672 -1225 • College Station, TX 888 -680 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 09/30/13 <br />Project: Schwartz SW 09/05/13 S27131 Work Order: C13090222 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: D2036C Analytical Run: SUB - 13211490 <br />Sample ID: ICV Initial Calibration Verification Standard 09/11/13 10:25 <br />Cyanide, Weak Acid Dissociable 0.0972 mg /L 0.0050 97 90 110 <br />Method: D2036C <br />Batch: B_R211490 <br />Sample ID: LFB <br />Laboratory Fortified Blank <br />Run: SUB - 6211490 <br />09/11/13 10:28 <br />Cyanide, Weak Acid Dissociable <br />0.100 mg /L <br />0.0050 <br />100 90 110 <br />Sample ID: ICB <br />Method Blank <br />Run: SUB - 6211490 <br />09/11/13 1030 <br />Cyanide, Weak Acid Dissociable <br />ND mg /L <br />0.002 <br />Sample ID: 813090773- 007GMS <br />Sample Matrix Spike <br />Run: SUB - 6211490 <br />09/11/13 12:20 <br />Cyanide, Weak Acid Dissociable <br />0.102 mg /L <br />0.0050 <br />89 80 120 <br />Sample ID: B13090773- 007GMSD <br />Sample Matrix Spike Duplicate <br />Run: SUB - 8211490 <br />09/11/13 12:22 <br />Cyanide, Weak Acid Dissociable <br />0 114 mg /L <br />0.0050 <br />101 80 120 <br />11 10 R <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />R - RPD exceeds advisory limit. <br />Page 9 of 27 <br />