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ENERCs YLASORATOR/ES, INC. -2393 Salt Creek Highway (82601) • P.O. Box 32g8. Caspei wY82602 <br />Toll Free 888.235.0515 - 307.235.0515 - Fax 307234.1639 - casper@energylab. com - www. energylab. com <br /> <br /> LABORATORY ANALYTICAL REPORT <br />• C <br />lient: Denison Mines (USA) Corp Report Date: 10/27/08 <br />Project: Sunday MineNan 4 Collection Date: Not Provided <br />Lab ID: C08090686-002 DateReceived: 09/17/08 <br />Client Sample ID: DM-ORE-2 Matrix: Solid <br /> MCU <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date / By <br />AGRONOMIC PROPERTIES <br />Moisture 1.3 % 0.1 USDA26 09/19/08 09:59 / lb <br />Lime as CaC03 4.4 % 0.1 USDA23c 09/23/08 13:00 / eli-h <br />ACID-BASE POTENTIAL <br />Neutralization Potential 44 t/kt Sobek Modifie 09/23/08 13:00 / eli-h <br />Acid Potential 0.6 t/kt 0.3 Sobek Modifie 09/25/08 12:00 / eli-h <br />Acid/Base Potential 43 t/kt Sobek Modifie 09/25/08 12:00 / eli-h <br />SULFUR FORMS <br />Sulfur, Total 0.02 % 0.01 Sobek Modifie 09130108 11:00 / eli-h <br />Sulfur, Hot Water Extractable ND % 0.01 Sobek Modifie 09/30/08 11:00 / eli-h <br />Sulfur, HCl Extractable ND % 0.01 Sobek Modifie 09/30/08 11:00 / eli-h <br />Sulfur, HN03 Extractable 0.02 % 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 <br />Chloride 138 <br />103000 mg/L <br />ug/L 1 <br />1000 E200.7 10101/08 18:011 cp <br />E300.0 09130/08 18:06 / dnp <br />Fluoride 890 ug/L 100 A4500-F C 09/29/08 14:38 / Ijl <br />Magnesium 29 mg/L 1 E200.7 10/01/08 18:01 /cp <br />Nitrogen, Ammonia as N 1730 ug/L 30 A4500-NH3 G 09/30/08 10:01 / jal <br />Nitrogen, Nitrate as N 101000 ug/L 50 E353.2 10/05/08 10:08 / sec <br />Nitrogen, Nitrate+Nitrite as N 101000 ug/L 50 E353.2 0926/08 11:00 / jal <br />Nitrogen, Nitrite as N 312 ug/L 100 A4500-NO2 B 0926/08 10:09 / sp <br />Sulfate 503000 ug/L 1000 E300.0 09/30/08 18:06 / dnp <br />PHYSICAL PROPERTIES - MWMP EXTRACTABLE <br />Conductivity 2360 umhos/cm 1 A2510 B 0926/08 11:39 / dd <br />Hardness as CaC03 464 mg/L 1 A2340 B 10/02/08 12:51 / kbh <br />pH 7.77 s.u. 0.01 A4500-H B 0926/08 11:39 / dd <br />Solids, Total Dissolved TDS @ 180 C 1660000 ug/L 10000 A2540 C 09/29/08 11:59 /jah <br />METALS - MWMP EXTRACTABLE <br />Aluminum ND ug/L 100 E200.8 09/30/08 14:391 is <br />Antimony 27 ug/L 1 E200.8 09/30/08 14:39 / is <br />Arsenic 840 ug/L 1 E200.8 09/30/08 14:39 / is <br />Barium 29 ug/L 1 E200.8 09/30/08 14:39 / is <br />Beryllium ND ug/L 1 E200.8 10/01/08 16:30 / is <br />Boron 162 ug/L 100 E200.7 10/01/08 18:01 / cp <br />Cadmium 2 ug/L 1 E200.8 09/30/08 14:39 / is <br />Chromium 14 ug/L 1 E200.8 09/30/08 14:39 / is <br />Cobalt 6 ug/L 1 E200.8 09/30/08 14:39 / 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 concentration