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• www.ene dab.com s ' Helera, MT 677-472-0711 a Billings htt 960-735-4469 • Casper, WT OWZ40-Iri r, <br />AaryO ExcNOYrarSia?tBlY Gillette,wYe66-696-7175*Rapid City, S6888-672-1225• College Station, TX 888-680.2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/11 /11 <br />Project: Schwartz-SW 3/10/2011 S25686-S25688 Work Order: C11030378 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Batch: R143753 <br />Sample ID: LRB Method Blank Run: ICPMS2-C_110317B 03/17/11 21:37 <br />Uranium ND mg/L 0.00020 <br />Sample ID: LFB Laboratory Fortified Blank Run: ICPMS2-C_110317B 03/17/11 21:41 <br />Uranium 0.0512 mg/L 0.00030 102 85 115 <br />Sample ID: C11030378-002AMS4 Sample Matrix Spike Run: ICPMS2-C_110317B 03/18/11 02:23 <br />Uranium 0.294 mg/L 0.00030 113 70 130 <br />Sample ID: C11030378-002AMSD Sample Matrix Spike Duplicate Run: ICPMS2-C_110317B 03/18/11 02:27 <br />Uranium 0.296 mg/L 0.00030 115 70 130 0.8 20 <br />Method: E200.8 <br />Sample ID: LRB 5 Method Blank <br />Antimony ND mg/L <br />Lead ND mg/L <br />Silver ND mg/L <br />Thallium ND mg/L <br />Uranium ND mg/L <br />Sample ID: LFB 5 Laboratory Fortified Blank <br />Antimony 0.0536 mg/L <br />Lead 0.0532 mg/L <br />Silver 0.0205 mg/L <br />Thallium 0.0529 mg/L <br />Uranium 0.0520 mg/L <br />Sample ID: C11030458-004EMS4 5 Sample Matrix Spike <br />Antimony 0.0509 mg/L <br />Lead 0.0554 mg/L <br />Silver 0.0181 mg/L <br />Thallium 0.0556 mg/L <br />Uranium 0.0557 mg/L <br />Sample ID: C11030458-004EMSD 5 Sample Matrix Spike Duplicate <br />Antimony 0.0483 mg/L <br />Lead 0.0537 mg/L <br />Silver 0.0176 mg/L <br />Thallium 0.0542 mg/L <br />Uranium 0.0538 mg/L <br /> Batch: R143967 <br /> Run: ICPMS2-C 110323A 03/23/11 12:03 <br />0.0010 <br />0.0050 <br />5.0E-05 <br />0.00020 <br />0.00020 <br /> Run: ICPMS2-C 110323A 03/23/11 12:10 <br />0.0010 107 85 115 <br />0.0010 106 85 115 <br />0.0010 102 85 115 <br />0.0010 106 85 115 <br />0.00030 104 85 115 <br /> Run: ICPMS2-C_110323A 03/24/1104:03 <br />0.0010 102 70 130 <br />0.050 111 70 130 <br />0.010 91 70 130 <br />0.0010 111 70 130 <br />0.00030 111 70 130 <br /> Run: ICPMS2-C_110323A 03/24/1104:10 <br />0.0010 97 70 130 5.1 20 <br />0.050 107 70 130 3.1 20 <br />0.010 88 70 130 3.3 20 <br />0.0010 108 70 130 2.5 20 <br />0.00030 107 70 130 3.4 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 14 of 29