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ENERGYL4B0ftAr7R1E-% /NC. • 2393 Sall Creek Highway (826011J • P.O. Box 3258 • C&W, WY82602 <br />N/ Free 888 235 0515 •307.235.0515 • Fax 307.234.1639 • casper@energy/ab.com • www.energylab.com <br />QA/QC Summary Report <br />• Client: Denison Mines (USA) Corp <br />Project: Sunday MineNan 4 <br />Report Date: 10127/08 <br />Work Order: 008090686 <br />Analyto Result Units RL %REC Low Limit High Limit RPD RPDLimit Qua[ <br />Method: E200.8 Batch: 19990 <br />Sample ID: C08090686-0098YS4 Sample Matrix Spike Run: ICPMS4-C 081008A 10/08/08 13:33 <br />Antimony 0.269 mg/L 0.050 105 70 130 <br />Arsenic 0.539 mg/L 0.0080 116 70 130 <br />Barium 0.275 mg/L 0.10 102 70 130 <br />Beryllium 0.229 mg/L 0.010 92 70 130 <br />Cadmium 0.257 mg/L 0.010 103 70 130 <br />Chromium 0.241 mg/L 0.050 96 70 130 <br />Cobalt 0.240 mg/L 0.010 96 70 130 <br />Copper 0.267 mg/L 0.010 98 70 130 <br />Lead 0.267 mg/L 0.050 102 70 130 <br />Manganese 0.246 mg/L 0.010 97 70 130 <br />Molybdenum 1.28 mg/L 0.10 118 70 130 <br />Nickel 0.236 mg/L 0.050 93 70 130 <br />Selenium 0.937 mg/L 0.0031 137 70 130 S <br />Silver 0.0621 mg/L 0.010 62 70 130 S <br />Thallium 0.252 mg/L 0.10 101 70 130 <br />Uranium 0.264 mg/l. 0.00030 105 70 130 <br />Vanadium 17.6 mg/L 0.10 70 130 A <br />Zinc 0.460 mg/L 0.010 104 70 130 <br />Sample ID: C08090686-0098MSD4 Sample Matrix Spike Duplicate Run: ICPMS4-0 081008A 10108108 13:40 <br />Aluminum 0.310 mg/L 0.10 115 70 130 2.2 20 <br />Antimony 0.266 mg/L 0.050 104 70 130 1.2 20 <br />Arsenic 0.539 mg/L 0.0080 115 70 130 0.1 20 <br />Barium 0.272 mg/l. 0.10 101 70 130 0.9 20 <br />Beryllium 0.229 mg/L 0.010 91 70 130 0.3 20 <br />Cadmium 0.255 mg/L 0.010 102 70 130 0.8 20 <br />Chromium 0.238 mg/L 0.050 95 70 130 1.3 20 <br />Cobalt 0.239 mg/L 0.010 96 70 130 0.5 20 <br />Copper 0.265 mg/L 0.010 97 70 130 0.4 20 <br />Lead 0.265 mg/L 0.050 101 70 130 0.8 20 <br />Manganese 0.245 mg/L 0.010 97 70 130 0.3 20 <br />Molybdenum 1.25 mgfL 0.10 108 70 130 2.4 20 <br />Nickel 0.234 mg/L 0.050 92 70 130 0.8 20 <br />Selenium 0.927 mg/L 0.0031 134 70 130 1 20 S <br />Silver 0.0671 mg/L 0.010 67 70 130 7.7 20 S <br />Thallium 0.251 mg/L 0.10 100 70 130 0.5 20 <br />Uranium 0.263 mg/L 0.00030 104 70 130 0.6 20 <br />Vanadium 17.5 mg/L 0.10 70 130 0.4 20 A <br />Zinc 0.453 mg/L 0.010 101 70 130 1.5 20 <br />Qualifiers: <br />RL - Analyte reporting limit. A • The analyte level was greater than four times the spike level. In <br /> accordance with the method % recovery is not calculated. <br />NO • Not detected at the reporting limit. S - Spike recovery outside of advisory limits.