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The two exceedances for total radium 226+228 occurred during the first two sampling events <br />in January. Over this period, barium chloride had been eliminated from the treatment system <br />because it was thought that the barium may be interfering with selenium removal. After <br />receiving analytical results indicating the levels of radium 226+228 above effluent <br />limitations, barium chloride was reintroduced into the treatment system. The final three <br />sampling events in February indicated total radium 226+228 levels ranging from 1.0 to 2.2 <br />µg/L. In addition, dissolved radium 2261evels (which was reported as an exceedance on the <br />December 2007 DMR) dropped from 4.5 µg/L during the first sampling event in January <br />2008 to <1.0 µg2 during the remaining four sampling events in January 2008. Based on the <br />improved efficiency in radium removal, Energy Fuels does not anticipate that dissolved or <br />total radium in discharge water will exceed effluent limitations as long as barium chloride is <br />used in the treatment process. <br />The total selenium results indicate that levels in the treated water have dropped to between <br />0.020 and 0.023 mg/I, for the last four sampling events in January. It is anticipated that <br />further fine adjustment of the treatment system pH may bring total; selenium levels 0.020 <br />mg/L or less. <br />Dissolved iron and sulfate levels have been monitored since ferric sulfate levels were <br />increased in January 2008. Dissolved iron levels in the discharge water have ranged from <br /><0.03 to 0.07 mg/L. Sulfate levels have ranged from 52 to 217 mg/L. <br />No modifications have been made to the treatment plant in the month of February because <br />the treatment system was not operated for the majority of this period. The mine workings <br />were pumped dry on January 29, 2008. After gaining access to the mine workings, the <br />electric mine pump was replaced with a pneumatic pump and positioned in an effort to <br />minimize pumping of sediment laden mine water. Inflow, in exceedance to what was used in <br />the mine, was pumped into the untreated water tank and held until the tank was sufficiently <br />full to treat a batch run of mine water. The treatment system was operated from February 21 <br />to February 23, 2008. <br />Please feel free to contact me at (303) 974-2151 or at (303) 916-8541 if you need any <br />additional information. <br />Sincerely, <br />Zach Rogers <br />Cc: Trey White, Frank Filas, Marty Olson, Chip Karo (Energy Fuels) <br />Attachment: January 2008 DMR <br />[irter~~~ I~'ue1s, fnt;. ~4 Ilr7ic~ra l~lvcl., ~uix fa"{) <br />r~~kaiv.€,raer~;3'I'ue~s.~:am~7 (,al:ec~~a~c~~i, (';~I~~ra~ic~ 3sCi2Z~3 <br />Fax: 3433-X74-2I~1 <br />