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ENEROYLASORATORIES,INC. •2393 Salt Creek Highway(62601 •P.0.Box 3258 • Casper, WY82602 <br /> Toll Free 888,2350515 • 307.235.0515 • Fax 307.234.1639 • vaspergenergy/ab.com•www.energy/a6.com <br /> LABORATORY ANALYTICAL REPORT <br /> Client: Denison Mines(USA)Corp Report Date: 03/18/09 <br /> Project: West Sunday Monitoring Wells Collection Date: 02/23/09 12:20 <br /> Lab ID: C09020884-001 DateReceived: 02/25/09 <br /> Client Sample ID: West Sunday#2 Matrix: Aqueous <br /> MCIJ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date 1 By <br /> MAJORIONS <br /> Calcium NO mg/L D 6 E200.7 03/06/09 14:51/rdw <br /> Chloride 42 mg/L 1 A4500-Cl B. 03/05/09 10:561 sp <br /> Magnesium NO mg/L 1 E200.7 03/06/09 14:511 rdw <br /> Nitrogen,Nitrate+Nitrite as N 0.2 mg/L 0.1 E353.2 03/04/09 14:27/jal <br /> Nitrogen,Nitrite as N 0.1 mg1L 0A A4500-NO2 B 02/25/09 12:31 I sp <br /> Sulfate 418 mg/L D 6 A4500-SO4 E 03/02/09 13:48/sp <br /> PHYSICAL PROPERTIES <br /> Hardness as CaCO3 2 mg/L 1 A2340 8 03/11/09 12:46/jic <br /> Solids,Total Dissolved TDS 180 C 1350 mg1L 10 A2540 C 02126/09 10:32 1 ab <br /> METALS-DISSOLVED <br /> Aluminum 159 ug/L 100 E200.8 02/26/09 22:49/sml <br /> Antimony NO ug/L 50 E200.8 02/26/09 22:491 smi <br /> Arsenic 1040 ug/L 1 E200.8 02/26/09 22:49/smi <br /> Barium ND ug1L 100 E200.8 02/26/09 22:491 smi <br /> Beryllium NO ug1L 10 E200.8 02/26/09 22:491 smi <br /> Boron 675 ug/L 100 E200.7 03/06/09 14:51 /rdw <br /> Cadmium ND ug/L 10 E200.8 02126/09 22:49/sml <br /> Chromium NO ug/L 50 E200.8 02/26/09 22:491 sml <br /> Cobalt NO ug/L 10 E200.8 02/26/09 22:491 sml <br /> Copper NO ug/L 10 E200.8 02/26/09 22:491 smi <br /> Iron 55 ug/L 30 E200.7 03/06/09 14:51/rdw <br /> Lead NO ug/L 50 E200.8 02/26/09 22:49/smi <br /> Lithium 141 ug/L 100 E200.7 03/10109 18:301 rdw <br /> Manganese NO ug/L 10 E200.8 02/26/09 22:491 sml <br /> Mercury NO ug/L 1 E200.8 02/26/09 22:49/sml <br /> Molybdenum 1090 ug/L 100 E200.8 02/26/09 22:49/sml <br /> Nickel NO ug/L 50 E200.8 02/26/09 22:49/sml <br /> Selenium 68 ug1L 1 E200.8 02126/09 22:491 sml <br /> Silver NO uglL 10 E200.8 02/26/09 22:491 sml <br /> Thallium NO ug/L 100 E200.8 02/26/09 22:491 smi <br /> Uranium 9150 ug/L 0.3 E200.8 02/26/09 22:491 smi <br /> Vanadium 1280 ug1L 100 E200.8 02/26/09 22:491 smi <br /> Zinc ND ug/L .10 E200.8 02/26/09 22:491 smi <br /> RADIONUCLIDES-TOTAL <br /> Gross Alpha 13100 pCi/L E900.0 03/08/09 00:271 cgr <br /> Gross Alpha precision(t) 110 pCUL E900.0 03/08/09 00:27/cgr <br /> Gross Alpha MDC 7.4 pCi1L E900.0 03/08/09 00:271 cgr <br /> Gross Beta 2930 pCUL E900.0 03/08/09 00:27/cgr <br /> Gross Beta precision(t) 24.5 pCUL E900.0 03/08/09 00:27/cgr <br /> Gross Beta MDC 8.7 pCi/L E900.0 03/08/09 00:271 cgr <br /> Report RL-Analyte reporting limit. MCL-Maximum contaminant level. <br /> Definitions: QCL-Quality control limit. NO-Not detected at the reporting limit. <br /> MDC-Minimum detectable concentration D-RL increased due to sample matrix interference. <br />