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MIDCONTINENT RESOURCES, INC. <br /> DRAINAGE CONTROL STRUCTURES <br /> FOR <br /> COAL HAULAGE ROAD SYSTEM <br /> COAL BASIN, PITKIN COUNTY, COLORADO <br /> Introduction <br /> Midcontinent Resources, Inc. owns and operates five coal mines in Coal Basin, <br /> Pitkin County, Colorado. These five coal mines are in Coal Basin in Western <br /> Pitkin County within White River National Forest. <br /> This coal mine operation currently requires a 72,460 foot long haulage road <br /> system for truck haulage of coal to the mine facilities area (district office) . <br /> This road system is composed of 7 road segments: A, B, C, D, E, F, and G. <br /> Access to the area is south and west from Glenwood Springs to Carbondale on <br /> Colorado highway 51 then south to Redstone on Colorado highway 133. The Mine <br /> District office is 3.5 miles west from Redstone on private roads. <br /> The purpose of this study is to meet stipulations presented to Mid Continent <br /> Resources, Inc. by the Colorado Mined Land Reclamation Board on August 31, 1979. <br /> Morrison-Knudsen Company, Inc. became involved with this project on October 5, <br /> 1979. <br /> The nature of the stipulations involved the need for improvements on existing <br /> drainage control structures. All of the 5 coal mines are underground mines with <br /> portals at high altitude (10,000 ft. ) and in very mountainous terrain. <br /> Purpose <br /> The purpose of this report is to briefly describe and present an engineering <br /> evaluation of the existing road conditions and existing drainage control struc- <br /> tures as well as to propose additional drainage structures, i .e. , culvert, ditch <br /> checks, etc. , for the 72,460 foot long haulage road system in Coal Basin. <br /> I <br /> 8 <br />