1997-06-18_GENERAL DOCUMENTS - C1981017

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TASK I MOBILIZATION AND DEMOBILIZATION This task shall comply with specification 1.0, Mobilization/Demobilization, attached. TASK 2 DEMOLITION For purposes of the demolition task, all concrete structures located between the North Fork of Dutch Creek east to the eastern most portion of the Warehouse area adjacent to Road A are subject to the requirements of this task. There are two overall objectives of the demolition task. The first is to demolish concrete and block wall building remnants and foundations, conveyor foundations, asphaltic pads and similar materials which are located within the work areas. The second objective is to remove the rubble produced by the demolition process to designated disposal sites for burial. Past demolition experience at Coal Basin indicates that substantial quantities of rebar are present within most concrete structures. The estimated volumes of concrete and block wall materials at each work area as observed at ground surface are as follows: Conveyor Corridor 32 cubic yards Stockpile B 39 cubic yards Stockpile M Negligible Warehouse Vicinity 2,642 cubic yards The preceding figures are estimations,only. CONTRACTORS are encouraged to perform independent verification measurements in order to ascertain the true volume of materials at each location. Except as otherwise required in this Invitation to Bid, in those instances where foundations, rubble or building remnants would be covered by a minimum of four feet K) of material as a result of backfilling and grading operations contemplated in these Special Conditions (see Task 4, Earth Work), removal of the structure is not required. All other rubble and assorted debris, including metallic and wood materials, miscellaneous trash, debris'and scrap, encountered in the project area will be removed and placed with the building rubble at the designated disposal areas so that no rubble or debris remain at the work areas except at the disposal areas. The concrete and block wall materials, and all other rubble, trash and debris, shall be placed against the designated back walls and cuts, and shall be evenly spread at the base of these features along their lengths. All of the debris and rubble shall be covered by a minimum of four feet K) of backfill material during completion of Task 4, Earth Work. Following is a general description of the demolition work to be accomplished at each work area. Failure to describe specific concrete or block gall structures does not negate the requirement to complete demolition as per these specifications. 7