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ENERGYLABORATORIES,INC. •2393 Salt Creek Highway(82601)•P.O.Box 3258 • Casper; WY82602 <br /> Toll Free 888 235 0515 • 307 235 0515 • Fax 307.234.1639 • casper@energylab.com-www energylab.com <br /> Aummumm <br /> LABORATORY ANALYTICAL REPORT <br /> Client: Denison Mines(USA)Corp Report Date: 04/02/09 <br /> Project: West Sunday Mine Collection Date: 03/17/09 08:00 <br /> Lab ID: C09030572-001 DateRecelved: 03/18/09 <br /> Client Sample ID: West Sunday#2 Matrix: Aqueous <br /> MCU <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> MAJOR IONS <br /> Carbonate as CO3 39 mg/L 1 A2320 B 03/30/0912:27/Ijl <br /> Bicarbonate as HCO3 630 mg/L 1 A2320 B 03/30/09 12:27/Ijl <br /> Calcium 2 mg/L 1 E200.7 04/01/09 18:10/rdw <br /> Chloride 42 mg/L 1 A4500-CI B 03/26/09 12:54/sp <br /> Fluoride 3.5 mg/L 0.1 A4500-F C 03/20/09 12:54/Ijl <br /> Magnesium ND mg/L 1 E200.7 04/01/09 18:10/rdw <br /> Nitrogen,Nitrate+Nitrite as N 0.3 mg/L 0.1 E353.2 03/26/09 13:10/jal <br /> Nitrogen,Nitrite as N NO mg/L 0.1 A4500-NO2 B 03/19/09 07:49/jal <br /> Potassium 5 mg/L 1 E200.7 04/01/09 18:10/rdw <br /> Silicon 5.2 mg/L D 0.2 E200.7 04/01/09 18:10/rdw <br /> Sodium 460 mg/L 1 E200.7 04/01/09 18:10/rdw <br /> Sulfate 412 mg/L D 6 A4500-SO4 E 03/25/09 13:44/sp <br /> PHYSICAL PROPERTIES <br /> Hardness as CaCO3 5 mg1L 1 A2340 B 04/01/09 18:10/kbh <br /> Solids,Total Dissolved TDS @ 180 C 1300 mg/L 10 A2540 C 03/18/09 15:14/dd <br /> METALS-DISSOLVED <br /> Aluminum NO ug/L 100 E200.7 03131/09 18:55/rdw <br /> Antimony ND ug/L 50 E200.8 03/19/09 14:30/is <br /> Arsenic 615 ug/L 1 E200.8 03/19/09 14:30/is <br /> Barium NO ug/L 100 E200.8 03/19/09 14:30/is <br /> Beryllium NO ug/L 10 E200.8 03/19/09 14:30/is <br /> Boron 445 ug/L 100 E200.7 03/31/09 18:55/rdw <br /> Cadmium NO ug/L 10 E200.8 03/19/09 14:30/is <br /> Chromium NO ug/L 50 E200.8 03/19/09 14:30/is <br /> Cobalt NO ug/L 10 E200.8 03/19/09 14:30/is <br /> Copper ND ug/L 10 E200.8 03/19/09 14:30/is <br /> Iron NO ug/L D 70 E200.7 04/01109 18:10/rdw <br /> Lead NO ug1L 50 E200.8 03/19/09 14:30 1 is <br /> Lithium 127 ug/L 100 E200.7 03/31/09 18:55/rdw <br /> Manganese 14 ug/L 10 E200.8 03/19/09 14:30/is <br /> Mercury ND ug/L 1 E200.8 03/19/09 14:30/is <br /> Molybdenum 627 ug/L 100 E200.8 03/19/09 14:30/is <br /> Nickel NO ug/L 50 E200.7 03/31/09 18:55/rdw <br /> Selenium 37 ug/L 1 E200.8 03/19/09 14:30/is <br /> Silver ND ug/L 10 E200.8 03/19/09 14:30/is <br /> Thallium NO ug/L 100 E200.8 03/19/09 14:30/is <br /> Uranium 7070 ug/L 0.3 E200.8 03/19/09 14:30/is <br /> Vanadium 956 ug/L 100 E200.8 03/19/09 14:30/is <br /> Zinc NO ug/L 10 E200.8 03/19/09 14:30/is <br /> Report RL-Analyte reporting limit. MCL-Maximum contaminant level. <br /> Definitions: QCL-Quality control limit. NO-Not detected at the reporting limit. <br /> D-RL increased due to sample matrix interference. <br />