Laserfiche WebLink
• - • iii iiiiiiiiniii iii <br />999 <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Depanmcm u! Nalu rat Resources <br />1317 Sherman Sl., Room 215 <br />Denver, Colorado R020] <br />Phone: 13031 866-3567 <br />FA%: (307) 8l2-SIOG <br />October 31, 1996 <br />Mr. John Hardaway <br />Manager of Environmental Affairs <br />Cripple Creek and Victor Gold Mining Co. <br />P. O. Box 191 <br />VICIOI, CO 80860 <br />RE: INFORMATION ON RUN-OF-MINE ORE PERMIT -Permit No. M-80-244 <br />Dear Mr. Hardaway: <br />~~~~~ <br />DEPARTMEtJT OF <br />NATURAL <br />RESOURCES <br />Roy Romer <br />Gove.na <br />lames S Lochhead <br />Ececubve Director <br />Michael B. Long <br />Division Director <br />The Division has reviewed the requested information you provided regarding the addition of <br />run-of-mine ore to the pond and have the following additional adequacy items: <br />1) CC&VG notes that the placement of non-lime amended run-of-mine ore is <br />compensated for by adding lime to the crushed ore at a higher rate. Please specify <br />how this compensation is procedurally accomplished. Is it prorated throughout the <br />pile? Is it done on a truck load by truck load basis? How is it accomplished <br />operationally? Is the compensated material in immediate proximity to the non-lime <br />amended run-of-mine ore placement? <br />2) CC&VG reports that the run-of-mine material is significantly higher in <br />transmissivity, which should enhance eventual flushing detoxification. Who <br />supervised and who performed these tests? What were the specific testing and <br />monitoring protocols observed? <br />The Division requests that CC&VG submit documentation of [he tests to complete the information <br />submitted. At this time the Division also requests that the operator submit a technical revision <br />to include the addition of non-crushed ore or run-of--mine material to the leach pad with the <br />approximate total quantity to be placed. <br />If you have additional questions or concerns, please contact me. <br />Sincerely, <br />\ <br />~~ <br />~~~ <br />Berhan Keffelew <br />Environmental Protection Specialist <br />BK/gaw <br />M:\oss\gaw\Run-mine.bk <br />