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A number of previously-existing buildings located at Mine 3, the Intermediate Coal Transfer <br /> Area and the Lower Bench Area have been demolished to the point that only the concrete and <br /> block wall portions of the buildings remain. The majority of these structures are located at <br /> the Mine 3 entry area. CONTRACTOR will demolish the remaining concrete and block wall <br /> building remnants, foundations, slabs and other such structures. The building and facility <br /> remnants generally consist of concrete walls, floors and foundations. Some of the buildings <br /> may be concrete block in composition. The building and facility remnants may be reinforced <br /> with rebar. All of the walls, floors and foundations, to a depth of three feet below ground <br /> surface, must be demolished and removed to the base of the highwall. <br /> All other rubble and assorted debris will be removed from the bench area and placed at the <br /> base of the highwall so that no materials remain on the bench except at the base of the <br /> highwall. <br /> The concrete and block wall materials and rubble shall be placed against the Mine 3 highwall, <br /> filling the depression at the north portion of the bench adjacent to the highwall first. After <br /> the depression is filled to ground level (as measured from the bench surface immediately east <br /> of the depression), remaining materials, if any, shall be evenly spread at the base of the <br /> highwall along its length. All of the debris and rubble shall be covered by a minimum of four <br /> (4) feet of backfill material during Task 4 (Earth Work), portion of the project. <br /> A number of concrete foundations, which may be reinforced with rebar,are present along the <br /> old conveyor corridor which extended from the mine bench down the face of the slope <br /> through the Intermediate Coal Transfer Area to the Lower Bench Area. Other foundation <br /> materials may also be present at these two locations. The foundations shall be removed to <br /> three (3) feet below the ground surface during the demolition task. Rubble may be removed <br /> to either the Mine 3, Intermediate Coal Transfer or Lower Bench backfill areas, and placed <br /> against the highwall remnant for burial as discussed in Task 4, Earth Work. <br /> Measurement and Payment <br /> There will be no measurement for payment. Payment for this task will be reflected in a lump <br /> sum bid under Item 2 on the Bid Schedule. This lump sum bid will cover all costs for <br /> structural demolition and removal of rubble and debris from the bench and conveyor areas to <br /> the respective disposal areas. Payment shall be as this task is completed and approved by <br /> the PROJECT MANAGER. <br /> TASK 3 SILT FENCING <br /> Sediment containment fences will be Mirafi Prefabricated Silt Fence with Posts, or approved <br /> equivalent. Silt fence will be installed as per manufacturers specifications with 3 feet <br /> between posts. Silt fence will be placed at various locations to minimize the transportation <br /> of sediment from each disposal facility and will be paid for under Task 3. Placement of silt <br /> fencing will occur concurrently with grading operations. It is estimated that 800 feet of silt <br /> fence will be installed at Mine 3; 200 feet at the Intermediate Coal Transport Area, and 400 <br /> feet at the Lower Bench Area. The silt fence will remain after project work is completed. <br /> 7 <br />