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0 <br />OXBOW MINING, LLC --? <br />3737 Hwy 133 P.O. Box 535 Somerset, Colorado 81434 USA Tel (970)929-5122 Fax <br />(970)929-5177 <br />September 30, 2008 <br />?® <br />Ms. Marcia L. Talvitie, P.E. ??GrGVv <br />Environmental Protection Specialist 0? <br />Colorado Division of Reclamation, Mining and Safety zbT0 ?tioo. <br />K.W <br />691 County Road 233, Suite A-2 00, ,?q <br />Durango, Colorado 81301 'Ovos`°??ga? <br />N?? <br />Re: Oxbow Mining LLC, Permit No. C-1981-022 <br />Request for TR-60 - Bear Creek Fansite <br />Dear Ms Talvitie, <br />The purpose of this letter is to request Technical Revision No. 60 to the Oxbow Mining LLC <br />(OMLLC) Permit No. C-1981-022. <br />This TR provides for a mine plan change to add the Bear Creek shaft and fan facility. By early <br />2009 it is expected the Hubbard Creek Fan will be shut down and an additional new fansite will <br />need to be constructed along Bear Creek. This fansite, referred to as the Bear Creek fansite, <br />consists of a fan, ducting, pre-engineered fan structure and enclosure, motor and controls (all <br />formerly used and moved from the Sanborn Creek Mine) and located on a concrete slab <br />foundation. Development material from excavation of the facility pad will form the approximate <br />2.3 acre pad/facility area. The material from the 16' diameter x 620' raise bore steel plate lined <br />shaft will be stored in the mine workings. Topsoil recovered from the disturbance area will be <br />stockpiled south of the fansite pad. The ephemeral Bear Creek is to be placed in a 450' x 6' <br />CMP culvert (see attached ACOE NWP-50 SPK-2008-1035 CW for placement in Exhibit 2.03- <br />E4, Other Permits for additional details). The substation is to be installed on concrete ties, and <br />fed by a new 46 KV power line spur from the existing line that feeds the Hubbard Creek <br />facilities. The pad could also contain up to 3 - 6" x 620' cased utility boreholes and will be <br />protected with portable chainlink fencing to reduce vandalism from travelers on the adjacent <br />"public" Bear Creek two track ranch road. Sediment control for the small area will be handled as <br />a small area exemption using such alternate sediment control techniques of sediment traps, straw <br />bales, and waddles, silt fence, rock protection, vegetation filters, etc. <br />The approximate 2.3 acre facility lies entirely on Oxbow fee surface and minerals and is located <br />in Gunnison County. <br />• Page 1