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)4 1 <br />RECOVED <br />SEP 0 0 2000 <br />Division of Reclamation, <br />dining and Safety <br />ENERGY FUELS RESOURCES <br />CORPORATION <br />Mr. Scott Gerwe SEP 0 4 2008 <br />Bureau of Land Management GRAND i-,rLD OFFICE <br />Grand Junction Field Office DIVISION OF <br />2815 H Road RECLAMATION {WING & SAFETY <br />Grand Junction, CO 81506 <br />Re: June 2008 Discharge Monitoring Report and Sampling Data <br />Dear Scott, <br />September 2, 2008 p r <br />Please find the attached June 2008 discharge monitoring report (DMR) for the Whirlwind <br />Mine in Mesa County. The DMR is required to be submitted under Colorado Discharge <br />Permit System (CDPS) Permit Number CO-0047562 and to be copied to you in <br />accordance with a stipulation in the Bureau of Land Management (BLM) approval letter <br />for Energy Fuels Prospecting Permit Notice of Intent (NOI) Modification 2, dated <br />September 10, 2007. Note that there were three exceedances of the effluent limitations in <br />during the June 23-26, 2008 treatment and discharge event; two for the Whole Effluent <br />Toxicity (WET) test and one for selenium. I've included the non-compliance notification <br />letter Energy Fuels provided to the Colorado Department of Public Health and <br />Environment as well as the laboratory data for the sampling events that took place in June <br />2008. <br />As a result of the WET test exceedance, a preliminary toxicity investigation (PTI) was <br />initiated by Energy Fuels per the conditions of the CDPS permit. Please see the attached <br />WET test failure notification letter, dated July 22, and the PTI 30-day status report, dated <br />August 2. The WET test indicated that elevated chemical oxygen demand (COD) levels <br />and resulting low dissolved oxygen (DO) levels likely caused the WET test exceedance. <br />Initial results from the PTI indicate that the high COD and low DO levels observed <br />during the June discharge event were an isolated event. <br />Energy Fuels is consulting with a mine water treatment specialist (Mark Reinsel, Ph.D., <br />P.E.) to explore additional possible treatment solutions to the selenium levels being <br />observed in the mine water. Currently, bench scale testing with increased dosages of <br />sodium bisulfate is being conducted. <br />i;ner€y Vuels, Inc. <br />tmgvtim.energy li.rels_com <br />441L ;nion 13ivs:i., Su le 600 <br />Lakewood, Colorado 80228 <br />Phone: 303-974-2 1 40 <br />Fax: '303-W4-2141