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ENERGY <br />wrrw.energylab.coni Helena, MT 877 472 - 0711 • Billings, MT 800 - 735 - 4489 • Casper, WY 888 235 - 0515 <br />kabiltal Excellence Six, 1852 Gillette, WY 866 - 686 - 7115 • Rapid City, SD 888 672 - 1225 • College Station, TX 888 690 - 2218 <br />Client: Cotter Corporation <br />Project: Schwartz SW 5/01/12 S26376 & S26383 <br />Method: E200.8 <br />Sample ID: ICV <br />Arsenic <br />Molybdenum <br />Silver <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />3 Initial Calibration Verification Standard <br />0.0494 mg /L 0.0010 99 90 110 <br />0.0517 mg /L 0.0010 103 90 110 <br />0.0209 mg /L 0.0010 105 90 110 <br />Report Date: 06/11/12 <br />Work Order: C12050084 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qua! <br />Analytical Run: ICPMS2- C_120504A <br />05/04/12 13:40 <br />Method: E200.8 Batch: 33549 <br />Sample ID: MB -33549 2 Method Blank Run: ICPMS2- C_120504A 05/04/12 17:16 <br />Arsenic 0.000982 mg /L 0.0010 <br />Silver 0.000625 mg /L 5.0E -05 <br />Sample ID: LCS3 -33549 2 Laboratory Control Sample Run: ICPMS2- C_120504A 05/04/12 17:18 <br />Arsenic 0.510 mg /L 0.0010 102 85 115 <br />Silver 0.0532 mg /L 0.0010 105 85 115 <br />Sample ID: 012050084- 002DMS3 2 Sample Matrix Spike Run: ICPMS2- C_120504A 05/04/12 17:55 <br />Arsenic 0.522 mg /L 0.0010 104 70 130 <br />Silver 0.0548 mg /L 0.0010 109 70 130 <br />Sample ID: C12050084- 002DMSD 2 Sample Matrix Spike Duplicate Run: ICPMS2- C_120504A 05/04/12 17:57 <br />Arsenic 0 522 mg /L 0.0010 104 70 130 0.0 20 <br />Silver 0.0549 mg /L 0.0010 109 70 130 0.2 20 <br />Method: E200.8 Batch: R159311 <br />Sample ID: LRB 2 Method Blank Run: ICPMS2- C_120504A 05/04/12 14:03 <br />Molybdenum ND mg /L 4E -05 <br />Silver 0.0002 mg /L 5E -05 <br />Sample ID: LFB 2 Laboratory Fortified Blank Run: ICPMS2- C_120504A 05/04/12 14:05 <br />Molybdenum 0.0522 mg /L 0.0010 104 85 115 <br />Silver 0.0192 mg /L 0.0010 95 85 115 <br />Sample ID: C12050086- 012BMS4 2 Sample Matrix Spike Run: ICPMS2- C_120504A 05/04/12 19:04 <br />Molybdenum 0.283 mg /L 0.0010 113 70 130 <br />Silver 0.0948 mg /L 0.0010 95 70 130 <br />Sample ID: C12050086- 012BMSD 2 Sample Matrix Spike Duplicate Run: ICPMS2- C_120504A 05/04/12 19:06 <br />Molybdenum 0.277 mg /L 0.0010 110 70 130 2.2 20 <br />Silver 0 0950 mg /L 0.0010 95 70 130 0.2 20 <br />Qualifiers: <br />RL - Analyte reporting limit <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 13 of 29 <br />