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ENERGY <br />ARORATORIES <br />Client: Cotter Corporation <br />Project: Schwartz SW 6/21/11 S25839- S25846 <br />wwwwwenergylab.com Helena, MT 877 -472 -0111 • Billings, .MT 800- 735 -4489 • Casper, WY 888- 235 -0515 <br />- Gillette, WY 866 -686 -7175 • Rapid City, S0 888 -672 4225 • College Station, TX 888 - 690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 <br />Sample ID: LRB <br />Copper <br />Uranium <br />Sample ID: LFB <br />Copper <br />Uranium <br />2 Method Blank <br />ND mg /L <br />ND mg /L 0.00020 <br />2 Laboratory Fortified Blank <br />0.0517 mg /L <br />0.0508 mg /L <br />0.0010 <br />Method: E200.8 <br />Sample ID: LRB Method Blank <br />Uranium ND mg /L 0.00020 <br />Sample ID: C11060898- 008AMS4 Sample Matrix Spike <br />Sample ID: LRB 3 Method Blank <br />Antimony ND mg /L 0.0010 <br />Silver ND mg /L 5.0E -05 <br />Thallium ND mg /L 0.00020 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />S - Spike recovery outside of advisory limits. <br />Run: ICPMS2- C_110630 B <br />Run: ICPMS2 -C 110630B <br />0.0010 103 85 115 <br />0.00030 102 85 115 <br />Sample ID: C11060898- 006CMS4 2 Sample Matrix Spike Run: ICPMS2- C_110630B 06/30/11 22:05 <br />Copper 0.0525 mg /L 0.010 102 70 130 <br />Uranium 0.0712 mg /L 0.00030 109 70 130 <br />Sample ID: C11060898- 006CMSD 2 Sample Matrix Spike Duplicate Run: ICPMS2- C_110630B 06/30/11 22:19 <br />Copper 0.0509 mg /L 0.010 99 70 130 3.1 20 <br />Uranium 0.0689 mg /L 0.00030 104 70 130 3.2 20 <br />Run: I C P M S 4- C_110622A <br />Sample ID: LFB Laboratory Fortified Blank Run: ICPMS4- C_110622A 06/22/11 18:12 <br />Uranium 0.0518 mg /L 0.00030 104 85 115 <br />Method: E200.8 <br />Sample ID: C11060903 -001 EMS4 3 Sample Matrix Spike Run: ICPMS4- C_110623A <br />Antimony 0.0496 mg /L 0.0010 99 70 130 <br />Silver 0.00509 mg /L 0.0010 25 70 130 <br />Thallium 0.0489 mg /L 0.0010 98 70 130 <br />Sample ID: LFB 3 Laboratory Fortified Blank Run: ICPMS4- C_110623A <br />Antimony 0.0514 mg /L 0.0010 101 85 115 <br />Silver 0.0209 mg /L 0.0010 104 85 115 <br />Thallium 0.0523 mg /L 0.0010 105 85 115 <br />Run: ICPMS4-C_110622A 06/22/11 19:17 <br />Uranium 0.0738 mg /L 0.00030 106 70 130 <br />Sample ID: C11060898- 008AMSD Sample Matrix Spike Duplicate Run: ICPMS4- C_110622A 06/22/11 19:21 <br />Uranium . 0.0725 mg /L 0.00030 103 70 130 1.8 20 <br />Sample ID: C11060903- 001EMSD 3 Sample Matrix Spike Duplicate Run: ICPMS4- C_110623A 06/24/11 08:19 <br />Antimony 0.0498 mg /L 0.0010 100 70 130 0.4 20 <br />Silver 0.00930 mg /L 0.0010 46 70 130 58 20 SR <br />Thallium 0.0484 mg /L 0.0010 97 70 130 1.0 20 <br />Run: ICPMS4-C_110623A 06/23/11 12:31 <br />ND - Not detected at the reporting limit. <br />R - RPD exceeds advisory limit. <br />Report Date: 07/25/11 <br />Work Order: C11060898 <br />Page 19 of 38 <br />Batch: R147577 <br />06/30/11 14:49 <br />06/30/11 14:52 <br />Batch: R147268 <br />06/22/11 18:08 <br />Batch: R147324A <br />06/24/11 08:12 <br />S <br />06/23/11 12:38 <br />