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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 C O L D RA D O <br />Denver, Colorado 80203 DIVISION O F <br />Phone: (303) 8663567 MINERAL S <br /> <br />FAX: (303) 832-8106 <br />GEOLOGY <br /> 0.EC LAMATION•M INING <br /> SAFETY•SCIENCE <br />November 22, 2005 sill owere <br /> Governor <br />George Patterson RGZSeII ceGrge <br />Energy Fuels Mining Company E><eculive Director <br />P.O. Box 449 Ronald W. Gattany <br />Florence <br />CO 81226 Division Director <br />, Natual Resource Trustee <br />RE: 2004 Annual Hydrology Report Review <br />Raton Creek Mine, Permit No. C-82-055 <br />Mr. Patterson: <br />The Division of Minerals and Geology has completed review of the 2004 Annual Hydrology <br />Report (AHR) for the Raton Creek Mine. Based on receiving final approval for the pending <br />Phase III bond release (SL-05), this will be the last hydrology report (and review) for the mine <br />site. <br />Monitoring Frequency <br />1. Monitoring of water level in the luppa and Refuse wells was met on a quarterly basis as <br />required by the approved permit. <br />2. Monitoring frequency, specific to laboratory sampling requirements, was met on a semi- <br />annual basis for the luppa well and the Refuse well. <br />Water Quantity and Quality <br />3. No significant changes attributable to mining have occurred regarding water levels in the <br />two monitoring wells. Both ground water wells continue to return water level values <br />within the defined historic range. Recently, the refuse well has been abandoned in <br />anticipation of final bond release. Minor variation in the luppa well water level is not <br />unusual and is likely related to use. Water quality shows no degradation affecting any <br />current probable use (stock watering). Total dissolved solids and sulfate concentrations <br />in ground water show only slight increases since baseline monitoring data collection <br />began nearly twenty years ago in the luppa well. Surface water flow and quality remain <br />generally unaffected by this operation. <br />Thank you for your efforts to complete hydrologic monitoring in accordance with the approved <br />plan. If you have any questions, please call me. <br />Sincer ~ ~~ <br />Kent am ~'-_ <br />Environmental Protection Specialist II <br />Office of Office of Colorado <br />Mined Land Reclamation Active and Inactive Mines Geological Survey <br />