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imamr ENERGY LABORATORIES, INC. * 2393 Salt Creek Hwy (82601) * PO Box 3258 * Casper, WY 82602 Toll Free 888.235.0515 * 307.235.0515 * FAX 307.234.1639 * casperc@energylab.com * www.energylab.com LABORATORY ANALYTICAL REPORT Client: Powertech (USA) Inc Project: Centennial R2-00151 Lab ID: C08061325-001 Client Sample ID: IS-003Ta Report Date: 08/21/08 Collection Date: 06/25/08 10:51 Date Received: 06/27/08 Matrix: Aqueous Analyses Result Units Qualifier RL MCL/ QCL Method Analysis Date / By METALS - DISSOLVED Chromium ND mg/L 0.01 E200.7 08/19/08 17:02 / cp Cobalt ND mg/L 0.01 E200.7 08/19/08 17:02 / cp Copper ND mg/L 0.01 E200.7 08/19/08 17:02 / cp Iron ND mg/L 0.03 E200.7 08/19/08 17:02 / cp Lead ND mg/L 0.01 E200.8 08/20/08 06:19 / sml Manganese 0.14 mg/L 0.01 E200.7 08/19/08 17:02 / cp Mercury ND mg/L 0.0002 E200.8 08/20/08 06:19 / sml Molybdenum ND mg/L 0.01 E200.7 08/19/08 17:02 / cp Nickel ND mg/L 0.01 E200.7 08/19/08 17:02 / cp Selenium ND mg/L 0.001 E200.8 08/20/08 06:19 / sml Silver ND mg/L 0.05 E200.7 08/19/08 17:02 / cp Strontium 2.9 mg/L 0.1 E200.7 08/19/08 17:02 / cp Thallium ND mg/L 0.001 E200.8 08/20/08 06:19 / sml Uranium 0.0095 mg/L 0.0003 E200.8 08/20/08 06:19 / sml Vanadium ND mg/L 0.1 E200.7 08/19/08 17:02 / cp Zinc 0.07 mg/L 0.01 E200.7 08/19/08 17:02 / cp METALS-TOTAL Aluminum 0.1 mg/L 0.1 E200.7 07/08/08 02:09 / cp Antimony 0.001 mg/L 0.001 E200.8 07/21/08 16:38 / is Arsenic 0.003 mg/L 0.001 E200.8 07/21/08 16:38 / is Barium ND mg/L 0.1 E200.7 07/08/08 02:09 / cp Beryllium ND mg/L 0.001 E200.8 07/21/08 16:38 / is Boron 0.2 mg/L 0.1 E200.7 07/08/08 02:09 / cp Cadmium ND mg/L 0.001 E200.8 07/17/08 00:11 / is Calcium 208 mg/L 1 E200.7 07/08/08 02:09 / cp Chromium ND mg/L 0.01 E200.7 07/08/08 02:09 / cp Cobalt ND mg/L 0.01 E200.7 07/08/08 02:09 / cp Copper 0.01 mg/L 0.01 E200.7 07/08/08 02:09 / cp Iron 0.25 mg/L 0.03 E200.7 07/08/08 02:09 / cp Lead ND mg/L 0.01 E200.8 07/17/08 00:11 / is Magnesium 58 mg/L 1 E200.7 07/08/08 02:09 / cp Manganese 0.15 mg/L 0.01 E200.7 07/08/08 02:09 / cp Mercury ND mg/L 0.0002 E245.1 07/07/08 21:11 / eli-b Molybdenum ND mg/L 0.01 E200.8 07/17/08 00:11 / is Nickel ND mg/L 0.01 E200.8 07/17/08 00:11 / is Potassium 15 mg/L 1 E200.7 07/08/08 02:09 / cp Selenium ND mg/L 0.001 E200.8 07/21/08 16:38 / is Silica 5.7 mg/L 0.1 E200.7 07/08/08 02:09 / cp Silver ND mg/L 0.05 E200.7 07/08/08 02:09 / cp Sodium 84 mg/L 1 E200.7 07/08/08 02:09 / cp Strontium 2.9 mg/L 0.1 E200.7 07/08/08 02:09 / cp Report RL - Analyte reporting limit. MCL - Maximum contaminant level. Definitions: QCL - Quality control limit. ND - Not detected at the reporting limit . MDC - Minimum detectable concentration Attachment E