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ENERGYL480flA7Of 1ES, /NC- - 2393 Sa/1 Creek Highway (82601) - P.O. Box 3258 -Casper, WY82602 <br />To// Free 888 235 0515 - 307.235.0515 - Fax 307.234.1639 - casperfeneWah com - www.energy/ab.cbm <br />AFAWKWUR <br />• LABORATORY ANALYTICAL REPORT <br />Client: Denison Mines (USA) Corp Report Date: 10127/08 <br />Project: Sunday Mine/Van 4 Collection Date: Not Provided <br />Lab ID: C08090688-017 DateReceived: 09/17/08 <br />Client Sample ID: DM-V4WR-2 Matrix: Solid <br />MCLI <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date / By <br />AGRONOMIC PROPERTIES <br />Moisture 2.5 % 0.1 USDA26 09/19/0810:05 / lb <br />Lime as CaC03 4.3 % 0.1 USDA23c 09/23/0813:00 / eli-h <br />ACID-BASE POTENTIAL <br />Neutralization Potential 43 flit Souk Modifie 09/23/08 13:00 / eli-h <br />Acid Potential 0.9 f/kt 0.3 Sobek Modifie 09/25/08 12:00 / eli-h <br />Acid/Base Potential 42 t/kt Sobek Mode 09/25/08 12:00 / eli-h <br />SULFUR FORMS <br />Sulfur, Total 0.03 % 0.01 Sobek Modife 09/30/08 11:00 / eli-h <br />Sulfur, Hot Water Extractable ND % 0.01 Sobek Modifie 09/30/08 11:00 / ell-h <br />Sulfur, HCl Extractable ND % 0.01 Sobek Mode 09/30/08 11:00 / eli-h <br />Sulfur, HN03 Extractable 0.03 % 0.01 Sobek Modifie 09/30/0811:00 / eli-h <br />Sulfur, Residual ND % 0.01 Sobek Modifie 09/30/08 11:00 / eli-h <br />MAJOR IONS - MWMP EXTRACTABLE <br />• Calcium <br />Chloride 122 <br />ND mg/L <br />ug/L 1 <br />1000 E200.7 10/13/08 16:32 / cp <br />E300.0 10/17/08 08:13 / ijl <br />Fluoride 630 ug/L 100 A4500-F C 10/10/0612:38 / Ijl <br />Magnesium 36 mg/L 1 E200.7 10/13/08 16:32 / cp <br />Nitrogen, Ammonia as N ND ug/L 30 A4500-NH3 G 10/14/08 12:25 / jal <br />Nitrogen, Nitrate as N 1930 ug/L 50 E353.2 10/17/0814:19 / sec <br />Nitrogen, Nitrate+Nitrite as N 1950 ug/L 50 E353.2 10113/08 14:47 / jai <br />Nitrogen, Nitrite as N ND ug/L 100 A4500-N02 B 10/10/08 12:17 / jai <br />Sulfate 378000 ug/L 1000 E300.0 10/17/08 08:13 / Ijl <br />PHYSICAL PROPERTIES - MWMP EXTRACTABLE <br />Conductivity 514 umhos/c m 1 A2510 B 10/14/08 14:06 / dd <br />Hardness as CaC03 453 mg/L 1 A2340 B 10/16/08 10:41 / kbh <br />pH 8.26 s.u. 0.01 A4500-H B 10/14/08 14:06 / dd <br />Solids, Total Dissolved TDS ® 180 C 640000 ug/L 10000 A2540 C 10/13108 08:41 / jah <br />METALS - MWMP EXTRACTABLE <br />Aluminum ND ug/L 100 E200.8 10/10/08 18:48 / sml <br />Antimony 7 ug/L 1 E200.8 10/10/0818:48 / sml <br />Arsenic 238 ug/L 1 E200.8 10/24108 14:44 / is <br />Barium 37 ug/L 1 E200.8 10/10/0818:48 / sml <br />Beryllium ND ug/L 1 E200.8 101160114:33 / sml <br />Boron ND ug/L 100 E200.7 10/13/0816:32 / cp <br />Cadmium ND ug/L 1 E200.8 10/10/0818:48 / sml <br />Chromium ND ug/L 1 E200.8 10/10/0818:48 / aml <br />Cobalt 3 ug/L 1 E200.8 10/10/0818:48 / sml <br />Report RL - Analyte reporting limit. MCL - Maximum contaminant level. <br />Definitions: QCL - Quality control limit. ND - Not detected at the reporting link. <br />. MDC - Minimum detectable concentration