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III IIIIIIIIIIIII III • 999 • STATE OF COLORADO DIVISION OF MINERALS AND GEOLOGY Depanmenl of Natural Resources 1313 Sherman 51., Room 215 Denver, Colorado 80203 Phone: UOA 06G-3567 FAX: (303) N32 8106 August 12, 1999 ~~ DIVISION OF MINERALS GEOLOGY R E C L A M A 7 1 0 N MINING•SAFETY 611 Owens Governor Allen S. Weaver Mine Engineer crag E. bValche~ E.ecuuve Director Energy Fuels Mining Company Michael B. Long P.O. Box 449 Division Diector Florence, CO 81226 RE: 1998 Annual Hydrology Report, Raton Creek Mine, Permit No. C-82-055 Mr. Weaver: The Division of Minerals and Geology has completed review of the 1998 Annual Hydrology Report (AHR) for the Raton Creek Mine. Review of the AHR file indicates that no response was received from Energy Fuels concerning issues raised as a result of the 1997 Annual Hydrology Report review. Those questions are re- stated below in Italics; The hydrologic monitoring plan presented on page 522 of the approved permit requires monthly visits with measurement of water level, temperature, pH, and E.C. for the Refuse well and the luppa well. No information was presented in the 1997 repoR that indicates monthly visits were conducted. Please submit this information or provide an explanation for these omissions. 2. Who visits the sediment pond and the permanent diversion on a weekly basis to check for, and measure, discharge and field parameters, if necessary? Please respond to the above questions within 15 days within receipt of this letter. 1998 Annual Hydrology Report Review Monitoring Frequency The hydrologic monitoring plan presented on page 522 of the approved permit requires monthly visits with measurement of water level, temperature, pH, and E.C. for the Refuse well and the luppa well. All visits were conducted in accordance with the approved plan with the exception of the March 1998 field sampling visit, where it appears from inspection of the cumulative data for the wells that water level was measured but Feld parameters were not collected. 2. Who visits the sediment pond and the permanent diversion on a weekly basis to check for, and measure, discharge and field parameters, if discharge is observed?