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www.oweab.com Helena, MT 817472 -0711 • Billings, W 600- 735 -4489 • Casper, WY 888 -235 -1515 <br />A@~ Emhm Sm 1JV 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 <br />Report Date: <br />09/05/13 <br />Schwartz SW 8/6/13 <br />S27019 <br />Work Order: <br />013080305 <br />(Project: <br />Analyte <br />Count Result Units <br />RL <br />° /.REC Low Limit High Limit RPD <br />RPDLimit Qual� <br />Method: D2036C <br />Analytical Run SUB- B209889 <br />Sample ID: ICV <br />Initial Calibration Verification Standard <br />08/13/13 12:14 <br />Cyanide, Weak Acid Dissociable <br />0.0946 mg /L <br />0.0050 <br />95 90 <br />110 <br />Method: D2036C <br />Batch: B13209889 <br />Sample ID: LFB <br />Laboratory Fortified Blank <br />Run: SUB- B209889 <br />08/13/13 12:17 <br />Cyanide, Weak Acid Dissociable <br />0.0992 mg /L <br />0.0050 <br />99 90 <br />110 <br />Sample ID: ICB <br />Method Blank <br />Run: SUB- B209889 <br />08/13/13 1219 <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 />00050 <br />93 80 <br />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 />0.0946 mg /L <br />0.0050 <br />95 80 <br />120 1.9 <br />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 25 <br />