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,' ; -,... III IIIIIIIIIIIII III March 26, 1981 RECEIVED MAR 3 0 1~~1 MINED LAND RECLAMATION; COAL' COLO, DEPT, OF NATURAL RESOURCES Mr. James Herron Colorado Department of Natural Resources Division of Mined Land Reclamation 423 Centennial Building 1313 Sherman Street Denver, CO 80203 SNOWMASS COAL COMPANY Denver Oll~ce: Soi102300 410 Sevenleenlh Street Denver, Colorado 80202 X303) 8251966 Mine Ollice: P.O. Box 980 Carbondale, Colorado 81623 (303) 9633440 RE: Conveyor Corridor Construction Ramp located at the Snowmass Coal Company Loadout Facility Permit No. 77-313 Dear Jim: T am writing this letter to provide you with additional information concerning the conveyor corridor ramp you observed during your last site inspection on March 16, 1981. The ramp was constructed From the higher terrace to the lower terrace to provide a means of moving heavy equipment, conveyor tube sections, and other associated conveyor construction traffic along the conveyor corridor. Initially, a woven Fabric stablization mat was laid out along the lower terrace from the toe of the slope out to the intended toe area of the ramp, The type of stablization mat used is designed to stablize soft, wet soil surfaces and is frequently used to construct highways and railroads through soft, marshy areas. The thick woven fabric creates an impenetrable barrier between the soil materials above and below the mat. Rocky material from the upper terrace was then pushed out and spread over the mat to create a ramp with a gradual incline. Following completion of the conveyor construction, the rocky material will be pulled back to the upper terrace and compacted into its original contour. The fabric ma[ will be removed from the site. I~ lye All possible precautions will be taken to avoid distrubance of the marshy topsoil layer of the lower terrace.