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~ ~ III IIIIIIIIIIIIIIII <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Deuartment of Natural Resources <br />1313 Sherman St.. Room 215 <br />Denver, Colorado 80203 D 1 v 15 i o N D E <br />Phone: 1303) 866-3567 MINERAL S <br />FAX: 1303) 832-8106 & <br />GEOLOGY <br />April 13, 2001 MEN IN GMS AFE~TY <br />Allen S. Weaver Bill Owens <br />Mine Engineer c°°er^°r <br />Energy Fuels Mining Company Greg E. Walther <br />P.O. Box 449 Execuirve Direc~or <br />Florence, CO 81226 Michael e. long <br />Division Director <br />RE: 1998 and 1999 Annual Hydrology Report Review Responses <br />Raton Creek Mine, Permit No. C-82-055 <br />Mr. Weaver: <br />The Division of Minerals and Geology has completed review of the responses to our review of <br />the 1998 and 1999 Annual Hydrology Reports (AHR) for the Raton Creek Mine. We have no <br />further questions at this time. <br />Please submit the minor revision as per your commitment in response to question #5 as soon as <br />possible. The original question is restated in italics. <br />Please submit a minor revision proposing the following modifications as necessary to the <br />hydrologic reporting requirements. <br />/ a. Due to closure of the mine, sites id 05, 06 and 07 have been eliminated. Please <br />provide a new surface water and ground water schedule (p. 552) that reflects the <br />elimination of these monitoring locations. <br />fib. If appears that flow observations are being made quarterly on the permanent <br />.,, p ~ diversion rather than weekly as required. What are Energy Fuels intentions to <br />/ICJ"~ W" comply with the approved plan of weekly visits to observe and/or sample any <br />!~ 2~ flow? It seems apparent that a change in frequency to observe possible. flows is <br />`1 necessary. <br />U /c. Does the CDPS permit also require weekly visits to the sediment pond outfall to <br />observe pond discharge? If not, the frequency (weekly) should be change to <br />reflect actual requirements. Another possible option is to state in the schedule <br />that sampling of sediment pond discharges will be conducted in accordance with <br />the approved CDPS permit rather than trying to re-state fhe requirements in the <br />mining permit application. <br />/d. The quarterly submittal requirement for water data was eliminated many years <br />ago. Please propose new language on page 554 to indicate that the "hydrologic <br />monitoring data will be submitted in an annual report no later than February 28 of <br />each year for the previous monitoring year' or similar language. <br />