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J ~I~~~~~~III~~~~~~~~ ~ I~ECEIVE(.~ CC Cripple Creek And Victor Gold Mining Company JUL 2p 1995 A Joint Venture -Pikes Peak Mining Company, Manager ~~ Operations Otfice Englewood Office Division Of Minerals & Ge010gy P.O. Box 191, 2755 State Highway 67 P.O. Box 5078, 5251 DTC Parkway, Suile 700 Victor, CO 80860 Englewood, CO 80155 (719) 689-2977 • FAX (719) 689-3254 (303) 889-0700 • FAX (303) 889-0707 July 19, 1995 SENT BY FACSIMILE AND CERTIFIED RETURN RECEIPT REQUESTED Mr. Berhan Keffelew Environmental Protection Specialist Colorado Department of Natural Resources Division of Mines and Geology Office of Mined Land Reclamation 1313 Sherman Street, Room 215 Denver, Colorado 80203 Reference: Cresson Project: Permit M-80-244: Placement of Carlton Mill Tailing Material in Highway 67 Embankment. Dear Mr. Keffelew: Presently, in accordance with the referenced permit, the Cripple Creek & Victor Gold Mining Company is removing the Cazlton Mill tailings material and placing it in Arequa Gulch upgradient of the Highway 67 embankment. With this approach, the Highway embankment is constructed primarily of materials from Pads a'iil and q2, as explained earlier this yeaz. The Construction Manager has identified and had evaluated a more expeditious and practical scenario, given the amounts of material available for the Highway embankment. This scenario, which CC&V wishes you to be awaze of, uses a mix of the tailing and the Pad materials in the Highway embankment. We are providing for your review, both a description of the geotechnical analysis conducted by Golder Associates and a copy of the memorandum received today from the Colorado Department of Transportation ("CDOT") which confirms that Department's approval of the embankment construction. Under this scenario, the embankment would be constructed using up to 20 percent of the Carlton Mill Tailing material with not less than 80 percent Pad /ll or Pad N2 material. As you will note from Golder Associates' letter to CDOT dated July 14, 1995 (Attachment 1), the settlement of the mix of material is not projected to be significantly different than that of the Pad material alone. While the data collected to date do not demonstrate any problems, there nonetheless is a minor potential for the finer-grained material to drain more slowly than the unmixed pad material.