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ENERGYLABORATOR/ES, INC. • 2393 Salt Creek Highway (82601) • P.O. Box 3258 • Casper WY82602 <br />Toll Free 888 235 0915 • 307.235.0515 • Fax 307.234.1639 • casper@energy/ab. com • www energy/ab. com <br />LABORATORY ANALYTICAL REPORT <br />Client: Denison Mines (USA) Corp Report Date: 10/27/08 • <br />Project: Sunday MineNan 4 Collection Date: Not Provided <br />Lab ID: C08090686-009 DateReceived: 09/17/08 <br />Client Sample ID: DM-SVWR-3 Matrix: Solid <br />MCU <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date I By <br />AGRONOMIC PROPERTIES <br />Moisture 3.6 % 0.1 USDA26 09/19/08 10:02 / lb <br />Lime as CaC03 3.5 % 0.1 USDA23c 09/23108 13:00 / eli-h <br />ACID-BASE POTENTIAL <br />Neutralization Potential 35 t1kt Sobek Modifie 09/23/08 13:00 / eli-h <br />Acid Potential 2 t/kt 0.3 Sobek Modifie 09/25/08 12:00 / eli-h <br />Acid/Base Potential 32 t/kt Sobek Modifie 09125/08 12:00 / eli-h <br />SULFUR FORMS <br />Sulfur, Total 0.08 % 0.01 Sobek Modifie 09/30/08 11:00 / eli-h <br />Sulfur, Hot Water Extractable ND % 0.01 Sobek Modifie 09/30/08 11:00 / eli-h <br />Sulfur, HCI Extractable ND % 0.01 Sobek Modifie 09/30/08 11:00 / eli-h <br />Sulfur, HN03 Extractable 0.08 % 0.01 Sobek Modifie 09/30/08 11:00 / eli-h <br />Sulfur, Residual ND % 0.01 Sobek Modifie 09/30/08 11:00 / eli-h <br />MAJOR IONS - MWMP EXTRACTABLE <br />Calcium 115 mg/L 1 E200.7 10/13/08 14:51 / cp <br />Chloride ND ug/L 1000 E300.0 10/08/08 19:13 / Ijl • <br />Fluoride 810 ug/L 100 A4500-F C 10/03/08 16:34 / Ijl <br />Magnesium 11 mg/L 1 E200.7 10/13/08 14:51 / cp <br />Nitrogen, Ammonia as N 50 ug/L 30 A4500-NH3 G 10/14/08 12:06 / jai <br />Nitrogen, Nitrate as N 620 ug/L 50 E353.2 10/17/08 14:19 / sec <br />Nitrogen, Nitrate+Nitrite as N 720 ug/L 50 E353.2 10/13/08 14:22 /jai <br />Nitrogen, Nitrite as N ND ug/L 100 A4500-NO2 B 10/10/08 12:14 /jai <br />Sulfate 361000 ug/L 1000 E300.0 10/08/08 19:13 / Ijl <br />PHYSICAL PROPERTIES - MWMP EXTRACTABLE <br />Conductivity 863 umhos/cm 1 A2510 B 10/07/08 15:55 / dd <br />Hardness as CaC03 332 mg/L 1 A2340 B 10/14/08 10:24 / kbh <br />pH 7.90 s.u. 0.01 A4500-H B 10/07/08 15:55 / dd <br />Solids, Total Dissolved TDS @ 180 C 659000 ug/L 10000 A2540 C 10/06/08 16:08 / jah <br />METALS - MWMP EXTRACTABLE <br />Aluminum 448 ug/L 100 E200.8 10/03108 15:22 / is <br />Antimony 7 ug/L 1 E200.8 10/03/08 15:22 / is <br />Arsenic 274 ug/L 1 E200.8 10/03/08 15:22 / is <br />Barium 27 ug/L 1 E200.8 10/03/08 15:22 / is <br />Beryllium ND ug/L 1 E200.8 10103/08 15:22 / is <br />Boron ND ug/L 100 E200.7 10/13/08 14:51 / cp <br />Cadmium 1 ug/L 1 E200.8 10/03/08 15:22 / is <br />Chromium 2 ug/L 1 E200.8 10/03/08 15:22 / is <br />Cobalt ND ug/L 1 E200.8 10/03/08 15:22 / is <br />Report RL - Analyte reporting limit. MCL - Maximum contaminant level. <br />Definitions: QCL - Quality control limit. ND - Not detected at the reporting limit. <br /> MDC - Minimum detectable concentrati on