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;~„~ : ~ IIIIIIIIIIIIIIIIIII ~ <br />~ ,,~ r Cripple Creek & Victor Gold Mining Company <br />~~ ~~ A Jomt Venture -Pikes Peak Mining Company, Manager <br />\\/yyy Operations Office <br />vv `~ P.O. Box 191, 100 E. 3rd Street <br />Victor, CO 80860 <br />(719) 689-2977 • FAX (719) 6893254 <br />SENT VIA EXPRESS MAIL <br />March 18, 1999 <br />Mr. Berhan Keffelew <br />Environmental Protection Specialist <br />Colorado Department of Natural Resources <br />Division of Minerals and Geology <br />Office of Mined Land Reclamation <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />RECEIVEp <br />~fA~ ~ 9 799 <br />i7ivision of Minerals 8 Geobgy <br />Q ~~ <br />o~ <br />~~ ~~~ <br />~~ <br />Re: Creccon Pmiert Permit M-80-244• Technical Revicion for Minor Increase in the Elevation <br />of Valley Leach Facility Phase II Toe Berm <br />Dear Mr. Keffelew: <br />Cripple Creek & Victor Gold Mining Company (°CC&V") is submitting this request for a <br />technical revision to allow increasing the elevation of the Valley Leach Facility ("VLF") Phase II <br />toe berm from 9,310 feet to approximately 9,312 feet above mean sea level (amsl) during the <br />construction activities associated with Amendment No. 7. Approval to increase the height of the 'I <br />Phase II toe berm an additional two feet will result in an overall raise of seven feet during the 1999 <br />construction season. <br />The increased height of the toe berm will provide two additional feet of freeboard under die <br />approved operating scenario. This proposed increase in the toe berm height is not related to the <br />water balance prepared for Amendment No. 7, as indicated during our meeting with representatives <br />of the Division of Minerals and Geology, Office of Mined Land Reclamation ("OMLR") on March <br />5, 1999. CC&V does not propose at this time to change any of the operational parameters <br />associated with the Phase I or Phase II pregnant solution storage areas or any other aspect of <br />managing the VLF, due to the increased height of the toe berm. <br />As discussed during our meeting, the Phase II toe berm is an important element in the stability of <br />the VLF, since it functions as a buttress for one of the stability modes analyzed in Amendment No. <br />7 (see Volume II, Section 5.1.3, page 38). Increasing the height and mass of the Phase II toe berm <br />would only serve to further buttress the ore along the referenced Phase I[ toe berm stability section <br />presented in Amendment No. 7. ~ <br />~' ~n , <br /> <br /> <br />