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F ENERGY LABORATORIES, INC. * 2393 Salt Creek Hwy (82601) * PO Box 3258 * Casper, WY 82602 <br />Toll Free 888.235.0515 * 307.235.0515 * FAX 307.234.1639 * casper0energy1ab.com * www.energylab.com <br />LABORATORY ANALYTICAL REPORT <br />Client: Powertech (USA) Inc <br />Project: Centennial R2-00151 <br />Lab ID: C08061325-001 <br />Client Sample ID: IS-003Ta <br />Report Date: 08/21/08 <br />Collection Date: 06/25/08 10:51 <br />DateReceived: 06/27/08 <br />Matrix: Aqueous <br /> MCL/ <br />Analyses Result Units Qualifier RL QCL Method Analysis Date / By <br />METALS-TOTAL <br />Thallium ND mg/L 0.001 E200.8 07/17/08 00:11 / is <br />Uranium 0.0112 mg/L 0.0003 E200.8 07/21/08 16:38 / is <br />Vanadium ND mg/L 0.1 E200.7 07/08/08 02:09 / cp <br />Zinc 0.08 mg/L 0.01 E200.7 07/08/08 02:09 / cp <br />RADIONUCLIDES - DISSOLVED <br />Gross Alpha 25.7 pCi/L E900.0 08/14/08 20:31 / crw <br />Gross Alpha precision (±) 5.1 pCi/L E900.0 08/14/08 20:31 / crw <br />Gross Alpha MDC 5.2 pCi/L E900.0 08/14/08 20:31 / crw <br />Gross Beta 13.8 pCi/L E900.0 08/14/08 20:31 / crw <br />Gross Beta precision (±) 3.7 pCi/L E900.0 08/14/08 20:31 / crw <br />Gross Beta MDC 5.8 pCi/L E900.0 08/14/08 20:31 / crw <br />Radium 226 4.7 pCi/L E903.0 07/21/08 18:07 / trs <br />Radium 226 precision (±) 0.5 pCi/L E903.0 07/21/08 18:07 / trs <br />Radium 226 MDC 0.3 pCi/L E903.0 07/21/08 18:07 / trs <br />RADIONUCLIDES - TOTAL <br />Radon 222 532 pCi/L 100 D5072-92 06/30/08 17:19 / dpb <br />Radon 222 precision (±) 90.9 pCi/L D5072-92 06/30/08 17:19 / dpb <br />DATA QUALITY <br />A/C Balance (± 5) 10.4 % Calculation 08/21/08 10:28 / lab <br />Anions 17.0 meq/L Calculation 08/21/08 10:28 / lab <br />Cations 20.9 meq/L Calculation 08/21/08 10:28 / lab <br />Solids, Total Dissolved Calculated 1090 mg/L Calculation 08/21/08 10:28 / lab <br />TDS Balance (0.80 - 1.20) 0.990 Calculation 08/21/08 10:28 / lab <br />- The Anion / Cation balance was confirmed by re-analysis. <br />VOLATILE ORGANIC COMPOUNDS <br />Benzene ND ug/L 0.50 SW8021 B 07/04/08 17:34 / dkh <br />Ethylbenzene ND ug/L 0.50 SW8021 B 07/04/08 17:34 / dkh <br />m+p-Xylenes ND ug/L 0.50 SW8021 B 07/04/08 17:34 / dkh <br />o-Xylene ND ug/L 0.50 SW8021 B 07/04/08 17:34 / dkh <br />Toluene 0.78 ug/L 0.50 SW8021 B 07/04/08 17:34 / dkh <br />Surr: Trifluorotoluene 94.0 %REC 80-120 SW8021 B 07/04/08 17:34 / dkh <br />Report RL - Analyte reporting limit. <br />Definitions: QCL - Quality control limit. <br />MDC - Minimum detectable concentration <br />MCL - Maximum contaminant level. <br />ND - Not detected at the reporting limit. <br />Attachment E