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EAERGY <br />AL;C).;?r? rc <br />=rvcmursAymwvmz4tnrc:. ,yaaLTBBKhVydWBy=I •PC.Box3258 • Casper,,WY82802 <br />TollFree 698.235.0515 • 907235.0515 • Far 307.2341639 • caener Ab.crm • www.eneWbb wM <br />LABORATORY ANALYTICAL REPORT <br />Client: Denison Mines (USA) Corp Report Date: 03/18/09 <br />Project: West Sunday Monitoring Wells Collection Date: 02/23/0912:20 <br />Lab ID: C09020884-001 DateReceived: 02/25/09 <br />Client Sample ID: West Sunday #2 Matrix: Aqueous <br />Analyses Result Units Qualiffere RL QCL Method Analysis Date / By <br />MAJOR IONS <br />Calcium NO mg/L D 6 E200.7 03106M 14:511 rdw <br />Chloride 42 mgA. 1 A4500-CI B 03105MO 10:56 / sp <br />Magnesium NO mg/L 1 E200.7 03106/0914:51 / rdw <br />Nitrogen, Nitrate+Nltrite as N 0.2 mg/L 0.1 E353.2 0310410914:271 jal <br />Nitrogen, Nitrite as N 0.1 mg/L 0.1 A4500•N02 B 022510912:31 / sp <br />Sulfate 418 mg/L D 6 A4500-S04 E 03102/0913:48 / sp <br />PHYSICAL PROPERTIES <br />Hardness as CeC03 2 mg1L 1 A2340 B 03/11/0912:46 / jlc <br />Solids, Total Dissolved TDS Q 180 C 1350 mg/L 10 A2540 C 02/2610910:32 / ab <br />METALS - DISSOLVED <br />Aluminum 159 ug/L 100 E200.8 02128109 22:49 / smi <br />Antimony NO ug/L 50 E200.8 02128/09 22:491 sml <br />Arsenic 1040 ug/L 1 E200.8 02/28/09 22:49 / sad <br />Berium ND ug/L 100 E200.8 02/28/09 22:491 aml <br />Beryllium NO ug/L 10 E200.8 02/26109 22:491 sml <br />Boron 675 ug/L 100 E200.7 03/0610914:511 rdw <br />Cadmium NO ug/L 10 E200.8 02/28/09 22:491 sml <br />Chromium NO ugA. 50 E200.8 0226/09 22:491 sml <br />Cobalt NO ug/L 10 E200.8 0226/09 22:49 / sml <br />Copper NO ug/L 10 E200.8 02128109 22:491 sml <br />Iron 55 ug/L 30 E200.7 0310810914:51 / rdw <br />Lead NO ug/L 50 E200.8 02MIN09 22:49 / sml <br />Lithium 141 ug/L 100 E200.7 0311010918:30 / rdw <br />Manganese NO ug/L 10 E2W.8 0228109 22:49 / sml <br />Mercury NO ug1L 1 E200.8 022809 22:49 / smi <br />Molybdenum 1090 ug/L 100 E200.8 0226109 22:491 aml <br />NrcW NO u9/L 50 E200.8 02209 22:491 sml <br />Selenium 68 ug/L 1 E200.8 0228109 22:49 / sml <br />Silver NO ug/L 10 E200.8 0225/09 22:49 I sml <br />Thallium NO ug1L 100 E200.8 0226109 22:491 sml <br />Uranium 9150 ug/L 0.3 E200.8' 02r2810922'A9/4ml <br />Vanadium 1280 ug/L 100 E200.8 0226109 22:491 aml <br />Zinc ND ug/L 10 E200.8 02/28/09 22:49 / sml <br />RADIONUCLIDES - TOTAL <br />Gross Alpha 13100 pCUL E900.0 03108109 00:27 / cgr <br />Gross Alpha precision (t) 110 pCUL E900.0 03/08/09 00:27 / cgr <br />Gross Alpha MDC 7.4 pCUL E900.0 03108109 00:27 / ogr <br />Gross Bata 2930 pClJL E900.0 03108/09 00:271 cgr <br />Gross Beta precision (t) 24.5 pCUL E900.0 03108/09 00:27 / ogr <br />Gross Beta MDC 8.7 pCUL E900.0 03/08/09 00:27 / cgr <br />Report RL - Analyte reporting limit. MCL - Maximum contaminant level. <br />Definitions: QCL - Quality control limit. NO - Not detected at the reporting lirrdt. <br />MDC - Minimum detectable concentration D - RL Increased due to sample matrix Interference.