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Foundations remaining on the refuse pile will be removed or buried. Foundations which must <br /> be removed from their current locations must be removed to a depth of three (3) feet. <br /> Foundations may be disposed of on the Old Refuse Pile provided that they are covered by a <br /> minimum of four (4) feet of cover material prior to application of topsoil. Foundations which <br /> will be buried by a minimum of four (4) feet of cover material as a result of grading operations <br /> do not require removal. <br /> An average of twelve (12) inches of topsoil will be placed over approximately five (5) acres <br /> of the facility. The volume of topsoil to be distributed is approximately 8,000 cubic yards. <br /> The topsoil will be partially derived from an adjacent topsoil stockpile, and partially from <br /> material which may be imported from the lower topsoil stockpile near the Sutey Refuse Pile. <br /> Compaction of the topsoil on the refuse pile will be accomplished up and down slopes so that <br /> the track-machine grouser marks are parallel to the contour. <br /> Measurement and Payment <br /> There will be no measurement for payment for foundation removal/burial, grading work and <br /> topsoil placement. Payment for these portions of the task will be reflected in a lump sum bid <br /> under Task 3 (Earth Work) on the Bid Schedule. This lump sum bid will cover payment of all <br /> costs for excavation, and grading of the waste rock and refuse materials, and transport and <br /> placement of the topsoil. Payment shall be as this task is completed and approved by the <br /> PROJECT MANAGER. <br /> TASK 4 SURFACE DRAINAGES <br /> Sutey Refuse Disposal Area <br /> A total of ten (10) drainage ditches will be constructed in the vicinity of the Sutey Refuse <br /> Disposal Area. The ten ditches consist of six (6) diversions to be constructed on the refuse <br /> disposal facility, a stream channel diversion, and three other off-facility diversions. The <br /> ditches will be constructed concurrent with grading operations on the Sutey Pile. Refer to <br /> Map 4, Sutey Refuse Disposal Facility, for the approximate location of each ditch. Task 4 is <br /> divided into ten 0 0) sub-tasks, a through j, as indicated on the Bid Schedule. <br /> Ditches 3, 5, 6, 7 will be constructed on existing benches across the face of the pile. Ditch <br /> 3 will be partially constructed across the face of the pile and partially constructed on an <br /> existing access road which is cut into the coal refuse. The total length of these four ditches <br /> will be approximately 4,150 feet. These four ditches will be triangular in shape, and will be <br /> constructed to a total depth of one foot as measured from the bottom center of the ditch to <br /> the crest of the ditch. Side slopes will be no steeper than 2H:1 V. Ditch width as measured <br /> from crest to crest shall be no less than four feet (Cross Section 1). Upon completion of <br /> excavation, the channel will be broadcast seeded with the Sutey Diversion Mixture at a rate <br /> of sixty (60) pounds per acre. The seed will be provided by the PROJECT MANAGER. The <br /> entire channel length and width shall be lined with fabric which will consist of a natural <br /> material such as American Excelsior Corlex Double Net or equivalent having ultra-violet <br /> stabilized nets. The fabric shall be installed as per manufacturers specifications. <br /> 8 <br />