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The bridge was constructed to minimize contaminated surface water impacting <br />the Yampa by installing guardrails and steel decking and by adopting procedures <br />to keep snow and mud from washing into the river. <br />Conveyor/Crusher. An 8-foot x 200-foot conveyor gallery constructed over <br />the river in 1976-77 is a steel frame supported on three-unit-driver H-pile <br />piers; the gallery piers and bridge piers are welded together. The gallery is <br />an all-steel structure, including the roof, walls, and floor, which totally <br />encloses a 36-inch belt conveyor. <br />The belt scale house as approved by CMLRD is a totally enclosed, 4-foot x <br />6-foot steel building which houses electronic instrumentation for the automatic <br />belt. <br />The coal recovery tunnel is an 8-foot-diameter, asphalt-coated, galvanized- <br />steel tube with a concrete floor throughout its 250-foot length. The conveyor <br />contains the 36-inch conveyor belt and support structure, automatic belt scale, <br />methane detection system, and three feeders to recover coal from the 8,000-ton <br />surge pile above. <br />The gallery deck, scale house floor, and coal recovery tunnel floor, as <br />approved by the Routt County Building Inspector and Health Department, were <br />constructed above the 100-year flood elevation. A berm approximately 4 feet <br />high on the south side of the river protects the coal-handling facilities from <br />the river and protects the river from the facilities. This berm surrounds the <br />sedimentation pond and existing facilities. <br />Facilities lying north of the Yampa River include the tipple, rail siding, <br />part of the conveyor, office trailer, electrical substation, truck scales <br />(approved by CMLRD Technical Revision O1 ), and an entrance road leading to the <br />- 162 - (Rev. 5/86) <br />