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entry. The two pipes shall then be joined so that leakage does not occur. Sufficient slope shall <br /> be provided to the entire length of pipe so that discharge to the outside of the block wall is <br /> accomplished. <br /> The coal mine waste will be placed into the now exposed mine. A rock plug or the concrete <br /> materials generated from the cribbing area, will be used as a back stop within the mine in order <br /> that the coal mine waste materials can be packed into the exposed mine. The backstop will be <br /> constructed no less than ten feet (10') north of the edge of the roof opening excavated by <br /> CONTRACTOR. The back stop will be sufficient in height and width so that the coal mine waste <br /> placed against it can not flow around it. The coal mine waste materials will be mechanically <br /> packed to refusal into the now open mine from the back stop to the block wall. However, care <br /> must be taken so as to not damage the integrity of the block wall. <br /> The remainder of the material will be deposited within the confines of the excavated cut in order to <br /> create a stable landform and to achieve a modified drainage pattern at this location. The material <br /> will be deposited in horizontal lifts of not more than two feet in thickness. Each lift shall be <br /> thoroughly compacted by wheeled equipment. Each lift shall be spread so that the base of the <br /> entire disposal area is covered. The face (south facing slope) of the each lift shall be no steeper <br /> than 4h:1 V. <br /> Measurement and Payment <br /> There will be no measurement for payment. Payment for this task will be reflected in a lump sum <br /> bid under Item 1 on the Bid Schedule. This lump sum bid will cover all costs for soil salvage, mine <br /> re-opening, excavation and placement of coal mine waste materials, removal and disposal of <br /> cribbing materials, implementation of traffic control plan and other miscellaneous activities to be <br /> accomplished under this Task. Payment shall be as this task is completed and approved by the <br /> PROJECT MANAGER. Such payment shall be considered full compensation for all labor, <br /> materials, equipment and all other items necessary and incidental to the completion of Task 1. <br /> TASK 2 TOPSOIL SALVAGE AND APPLICATION <br /> Topsoil or topsoil substitute will be salvaged from the coal mine waste disposal area prior to <br /> initiating disposal activities. It is anticipated that a minimum of eight inches (8") of surface material <br /> will be excavated and removed from the footprint and sides of the disposal area. Soil shall be <br /> salvaged from anywhere within the disposal area where the coal mine waste materials will be in <br /> contact with the ground surface. This material, along with the material excavated when the mine <br /> roof is removed, will be placed to the side for later use. CONTRACTOR must take care to not <br /> further disturb the soil until it is ready for replacement. <br /> Upon completion of placement of the coal mine waste materials, the salvaged topsoil will be <br /> placed upon the coal mine waste so that the waste is completely and uniformly covered by all of <br /> the available topsoil material. Upon completion of the topsoil application, two (2) tons of certified <br /> weed free mulch shall be applied to the soil surface. <br /> Mulch shall be provided by CONTRACTOR, and shall conform to Section 20.2 of the Revegetation <br /> Specifications, attached. All mulch shall be certified as noxious weed free or noxious weed seed <br /> free by any authorized State or County Officer. Documentation of certification shall be provided to <br /> the PROJECT MANAGER prior to application of mulch. The mulch shall be evenly distributed <br /> over the soil surface. Surface roughening will occur simultaneously with distribution of the weed <br /> free mulch in order to prevent loss of the mulch due to wind. <br /> 5 <br />