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ENERGY LABORATORIES, INC. -2393 Salt Creek Highway (82600-P0. Box 3258 • Casper WY82602 <br />Toll Free 888.235.0515 - 307.235.0515 - Fax 307.234.1639 - carper@energy/ab. com • www. energy/ab. com <br />LABORATORY ANALYTICAL REPORT <br />Client: Denison Mines (USA) Corp Report Date: 10/27108 <br />Project: Sunday MineNan 4 Collection Date: Not Provided <br />Lab ID: C08090686-006 DateReceived: 09/17/08 <br />Client Sample ID: DM-TPWR-3 Matrix: Solid <br />MCL/ <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date / By <br />AGRONOMIC PROPERTIES <br />Moisture 5.4 % 0.1 USDA26 09/19/08 tO:Ot / lb <br />Lime as CaC03 6.9 % 0.1 USDA23c 09/23/08 13:00 / eli-h <br /> ACID-BASE POTENTIAL <br /> Neutralization Potential 69 t/kt Sobek Modifie 09/23108 13:00 / eli-h <br /> 0 t/kt 0.3 Sobek Modifie 09125/08 12:00 / eli-h <br /> Acid Potential 69 t/kt Sobek Modifie 09/25/08 12:00 / eli-h <br /> Acid/Base Potential <br /> SULFUR FORMS <br /> ND % 0.01 Sobek Modifie 09/30/08 11:00 / eli-h <br /> Sulfur, Total <br />Hot Water Extractable <br />Sulfur ND % 0.01 Sobek Modifie 09130/08 11:00 / ell-h <br /> , <br />HCI Extractable <br />Sulfur ND % 0.01 Sobek Modifie 09/30/08 11:00 / eli-h <br /> , <br />Sulfur, HN03 Extractable ND % 0.01 Sobek Modifie 09/30108 11:00 / eli-h <br /> Sulfur, Residual ND % 0.01 Sobek Modifie 09130/08 11:00 / eii-h <br /> MAJOR IONS - MWMP EXTRACTABLE <br /> Calcium 109 mg/L 1 E200.7 10102/08 15:22 / cp <br />• Chloride 667000 ug/L 1000 <br />100 E300.0 10/08/08 18:30 / Ijl <br />A4500-F C 10/03/08 16:14 / Ijl <br /> Fluoride 890 ug/L <br /> Magnesium 30 mg/L 1 E200.7 10/02/08 15:22 / cp <br /> Nitrogen, Ammonia as N 4030 ug/L 30 A4500-NH3 G 10/14/08 12:01 /jai <br /> Nitrogen, Nitrate as N 84600 ug/L 50 E353.2 10/17108 14:191 sec <br /> Nitrogen. Nitrate+Nitrite as N 84900 ug/L 50 E353.2 10/13/08 14:15 /jai <br /> Nitrogen, Nitrite as N 273 ug/L 100 A4500-NO2 B 10/10/08 12:11 / jai <br /> Sulfate 202000 ug/L 1000 E300.0 10108/08 18:30 / Ijl <br /> PHYSICAL PROPERTIES - MWMP EXTRACTABL E <br /> Conductivity 3270 umhos/cm 1 A2510 B 10/02108 11:02 / dd <br /> Hardness as CaC03 397 mg/L 1 A2340 B 10/04/08 15:12 / sec <br /> pH 8.74 s.u. 0.01 A4500-H B 10/02/08 11:02 / dd <br /> Solids, Total Dissolved TDS @ 180 C 2030000 ug/L 10000 A2540 C 10/02/08 13:50 / dd <br /> METALS - MWMP EXTRACTABLE <br /> Aluminum 220 ug/L 100 E200.8 10/02108 21:16 / smi <br /> Antimony 3 ug/L 1 E200.8 10/02/08 21:16 / sml <br /> Arsenic 83 ug/L 1 E200.8 10/24/08 13:46 / is <br /> Barium 436 ug/L 1 E200.8 10102108 21:16 / sml <br /> Beryllium ND ug/L 1 E200.8 10/02/08 21:16 / smi <br /> Boron 197 ug/L 100 E200.7 10/02/08 15:221 cp <br /> Cadmium ND ug/L 1 E200.8 10/02/08 21:16 / smi <br /> Chromium ND ug/L 1 E200.8 10/02/08 21:16 / sml <br /> Cobalt 2 ug/L 1 E200.8 10/02/08 21:16 / sml <br /> Report RL - Analyte reporting limit. MCL - Maximum contaminant level. <br /> Definitions: QCL - Quality control limit. <br />MDC - Minimum detectable concentration ND - Not detected at the reporting limit.