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TASK 1 COAL MINE WASTE EXCAVATION The coal mine waste material located behind and adjacent to the cribbing will be removed from its current location. Prior to the Project beginning, PROJECT MANAGER will delineate the margins of the waste material which is to be removed. Excavation of the coal mine waste material will occur so that all of the waste material is completely removed from the hillside, and until native rock or soil materials are exposed throughout the designated excavation area. The excavated material will be transported to the designated disposal site, which is located across Garfield County Road 127, and down the adjacent hill slope. Because the County Road will be crossed, CONTRACTOR must submit a detailed traffic management plan prior to initiating any excavation activities. The plan must include, at a minimum, provision for flag people (one located above the road crossing /work area, and one located below the crossing, /work area), clean up of the County Road, and repair of the road surface, should any damage to the black top occur. The traffic control plan must be fully implemented whenever work is occurring within the County Road Right of Way. CONTRACTOR shall bear any and all expenses in regard to implementation of the traffic control plan. In order to complete excavation of the coal mine waste, the cribbing which holds the waste in place will have to be removed. The cribbing may only be removed in a manner which does not promote failure of the coal mine waste onto the adjacent road Right of Way. In no instance will CONTRACTOR allow material to fail onto the road Right of Way. Safety of the CONTRACTOR, PROJECT MANAGER and the General Public is of paramount concern. The cribbing material itself will be removed and transported from the site for disposal by CONTRACTOR at an appropriate facility. It is not known how the cribbing is anchored to the ground surface. It is possible that rebar or other metallic pins are in place. if encountered, these materials shall be cut just below ground surface and removed from the site for proper disposal. Prior to deposition of the coal refuse material, the topsoil within the disposal area must be removed. See Task 2. Topsoil Salvage and Application. Once the disposal site is cleared of soil materials, the excavated coal mine waste material will be transported to the designated disposal area. The disposal area is an existing cut which has been excavated into a hillside. The result of the excavation is that a hill exists to the south of the excavated cut, while a steep slope which rises to County Road 127 exists to the north. The cut daylights to the south west perpendicular to a small creek at an abandoned mine entry. The cut is approximately twenty feet (20') wide, fifty to sixty feet (50' to 60') in length, and has a variable depth, which is no less than ten feet (10'). The excavation is assumed to be a stope-like feature created when coal was excavated from the area. The excavated cut is located immediately above an abandoned coal mine. The mine entry had been previously sealed, however, the roof of the mine has failed behind the seal, causing the mine to now be open about fifteen feet (15') behind the mine entry. At the point of failure, a vertical hole has developed, exposing mine timbers. This opening is located within the confines of the disposal area. Observations indicate that at the point of failure, the vertical distance between the roof of the mine and the base of excavated cut is approximately four feet (4'). The amount of cover between the roof and the excavated cut beyond the collapse feature is unknown. Initially, some of the waste material will be inserted into the mine in order to help stabilize the roof. CONTRACTOR will excavate the mine roof from the collapse feature northerly for a distance of twenty feet (20'). Excavation shall occur se that a minimum of earthen materials are introduced into the mine. Two inch (2") Polyvinyl Chloride (PVC) pipe will be placed on the floor of the mine so that it extends from fifteen feet (15') north of the edge of the roof opening excavated by CONTRACTOR , to the already in place pipe extending through the block wall closure at the mine