Laserfiche WebLink
coal refuse pile. <br /> While excavating the north facing slope behind the coal refuse disposal site, a small volume of <br /> concrete rubble which is in place at this location shall be removed to the concrete rubble disposal <br /> site described in Task 2, Demolition. This rubble shall be placed and disposed of in accordance <br /> with the specification of Task 2, Demolition. <br /> As the earthen material is excavated from the outside of the second switchback of Road A and <br /> from the north facing slope behind the coal refuse disposal site, it shall be evenly placed over the <br /> top of the coal refuse until a uniform thickness of two feet (20) is achieved. The entire disposal <br /> area shall be covered by earthen material in this manner. <br /> The slopes of the disposal site have been constructed to the desired slope angles. Therefore, <br /> earthen material placement shall not result in a steepening of the slopes. <br /> Old Coal Storage Area <br /> The Old Coal storage Area is located near the second switchback of Road A (see Map 3, Project <br /> Area). The goal of this task at this area is to dispose of remnant coal materials, and to create a <br /> drainage pattern consistent with surrounding land forms. <br /> All coal materials located in this area will be pushed to the base of the slope located to the west <br /> of this area. The coal shall be placed at a uniform depth across the length of the slope. <br /> A large catch bench exists approximately forty feet (40') above the base of the east facing slope. <br /> This bench shall be cut and pushed to cover the coal placed at the base of the slope. The coal <br /> must be covered by a minimum of two feet (2') of this material. <br /> A drainage ditch is located on the north facing slope, north of the old Coal Storage Area. This <br /> ditch is to be eliminated by pulling in the outside edge to fill the ditch. <br /> A drainage divide will be created across the Old Coal Storage Area, trending east to west. The <br /> crest of the divide will coincide with the top of the excavation area created during excavation <br /> activities on the slope south of the coal refuse disposal area. PROJECT MANAGER will <br /> delineate the crest of the divide in the field using lathe and ribbons. CONTRACTOR will grade <br /> the land south of the drainage crest and north of Road A so that this area slopes toward Road A <br /> at a four percent (4%) grade. The grade must be accomplished so that the entire area between <br /> the crest of the divide and Road A drains to the drainage ditch completed as a part of Task 8, <br /> Surface Channels. <br /> Area East Of Road A <br /> The area located east of Road A, and west of the Dutch Creek Diversion, will be graded as a <br /> part of this Task. This area will be ripped to a depth of eighteen inches (18"), with machine <br /> rippers being spaced no further than thirty inches (30") apart. After completion of ripping, severe <br /> surface roughening will be accomplished in conjunction with topsoil placement (see Task 10, <br /> Topsoil Application and Surface Roughening). <br /> Area West Of Coal Refuse Pile <br /> The area to be graded is located against and adjacent to the north facing slopes south of the <br /> access road through this area. Minimal grading of this area will occur in order to ensure that rain <br /> fall and snow melt runoff flow in a northerly direction, toward Coal Creek. No grade or slope <br /> shall exceed 3H:1 V. The entire area will be ripped to twelve inches (12") depth on eighteen inch <br /> 17 <br />