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ENERGY <br />'_A OF OF4ILJ <br />Client: Cotter Corporation <br />Project: Schwartz SW 5/25/11 S25798- S25800 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />E200.8 <br />Method: <br />Sample ID: MB -30014 <br />Antimony <br />Arsenic <br />Chromium <br />Copper <br />Lead <br />Silver <br />Thallium <br />Uranium <br />www.energylab.cem <br />aearyxcN Etna= Sacs 78552 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />8 Method Blank <br />0.00154 mg /L 0.0010 <br />0.00151 mg /L 0.0010 <br />ND mg /L 0.0010 <br />0.00538 mg /L 0.0010 <br />ND mg /L 0.0050 <br />8.15E -05 mg /L 5.0E -05 <br />ND mg /L 0.00020 <br />ND mg /L 0.00020 <br />Helena, MT 877 -472 -0711 • Billings, MT 800 - 735 -4489 • Casper, WY 888 - 235 -0515 <br />Gillette, WY 866 -686 -7175 • Rapid City, SD 888 -672 -1225 • College Station, TX 888 - 690 -2218 <br />Run: I C P M S 4- C_110603A <br />Report Date: 07/01/11 <br />Work Order: C11050901 <br />Batch: 30014 <br />06/03/11 16:16 <br />Sample ID: LCS3 - 30014 8 Laboratory Control Sample Run: ICPMS4- C_110603A 06/03/11 16:21 <br />Antimony 0.495 mg /L 0.050 99 85 115 <br />Arsenic 0.508 mg /L 0.0010 101 85 115 <br />Chromium 0.486 mg /L 0.050 97 85 115 <br />Copper 0.502 mg /L 0.010 99 85 115 <br />Lead 0.517 mg /L 0.050 103 85 115 <br />Silver 0.0519 mg /L 0.010 104 85 115 <br />Thallium 0.525 mg /L 0.10 105 85 115 <br />Uranium 0.535 mg /L 0.00030 107 85 115 <br />Sample ID: 011050901 002DMS3 8 Sample Matrix Spike Run: ICPMS4- C_110603A 06/03/11 17:04 <br />Antimony 0.501 mg /L 0.050 100 70 130 <br />Arsenic 0.510 mg /L 0.0010 102 70 130 <br />Chromium 0.497 mg /L 0.050 99 70 130 <br />Copper 0.504 mg /L 0.010 100 70 130 <br />Lead 0.528 mg /L 0.050 106 70 130 <br />Silver 0.0522 mg /L 0.010 104 70 130 <br />Thallium 0.535 mg /L 0.10 107 70 130 <br />Uranium 0.578 mg /L 0.00030 112 70 130 <br />Sample ID: C11050901 002DMSD 8 Sample Matrix Spike Duplicate Run: ICPMS4- C_110603A 06/03/11 17:10 <br />Antimony 0.510 mg /L 0.050 102 70 130 1.7 20 <br />Arsenic 0.502 mg /L 0.0010 100 70 130 1.7 20 <br />Chromium 0.488 mg /L 0.050 97 70 130 1.8 20 <br />Copper 0.495 mg /L 0.010 98 70 130 1.8 20 <br />Lead 0.532 mg /L 0.050 106 70 130 0.6 20 <br />Silver 0.0526 mg /L 0.010 105 70 130 0.7 20 <br />Thallium 0.545 mg /L 0.10 109 70 130 1.8 20 <br />Uranium 0.584 mg /L 0.00030 113 70 130 1.1 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 15 of 27 <br />