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The PROJECT MANAGER will notify the CONTRACTOR if additional silt fencing must be <br /> provided and installed. <br /> Measurement and Payment <br /> Sediment containment fences will be measured to the nearest linear foot. Payment for this <br /> task will be paid for at prices established in Task 3 of the Bid Schedule per linear foot <br /> installed. Such payment shall be considered full compensation for all labor, materials, <br /> equipment and all other items necessary and incidental to the furnishing and placement of the <br /> Sediment containment fences as directed and described in the specifications. Payment will <br /> be as this task is completed and approved by the PROJECT MANAGER. Payment for this task <br /> will be made only for the unit price shown under Task 3 of the Bid Schedule. <br /> TASK 4 EARTHWORK <br /> The earthwork portion of this Bid involves the reclamation of the Mine 3 highwall. Highwalls <br /> will also be reclaimed through partial backfilling at the Intermediate Coal Transfer Area and <br /> at the Lower Bench Area. Earthwork is broken into three subtasks: Task 4a - Mine 3, Task <br /> 4b - Mine 3 Intermediate Coal Transfer Area, and Task 4c - Mine 3 Lower Bench Area. <br /> Task 4a - Mine 3 <br /> The goal Task 4a is to accomplish partial backfilling of the Mine 3 highwall. The material to <br /> be backfilled against the highwall will be obtained from the outslope of the existing mine <br /> bench (Map 4, Mine 3 Bench Area Topography). The outslope consists of material derived <br /> from the development of the highwall. The material to be excavated from the mine bench <br /> outslope is composed of weathered sandstone, shale and coal materials. <br /> Material will be excavated from the north and south facing mine bench outslopes, and will be <br /> removed as uniformly as possible across the face of the outslopes. The CONTRACTOR shall <br /> excavate materials from the mine bench outslopes so that the downslope extent of the <br /> excavation maintains as uniform an elevation as possible. Excavation shall proceed so that <br /> the excavated portion of the outslopes do not exceed 21-1:1 V upon completion of Task 3. <br /> Excavation and filling operations shall begin at the north side of the mine bench area and <br /> proceed toward the south. The material excavated from the outslopes shall be transported <br /> to the base of the highwall and placed over the rubble fill and the mine bench remnant. All <br /> of the debris and rubble shall be covered by a minimum of four (4) feet of backfill material. <br /> The top of the backfill will extend thirty (30) feet above the highwall bench. The highwall will <br /> be marked in the field by the PROJECT MANAGER by paint or other suitable means at the <br /> thirty (30) foot level. This thirty (30) feet backfill height will be maintained for the length of <br /> the highwall except where reduced by the PROJECT MANAGER. The highwall is estimated <br /> to be approximately 800 feet in length. The fill shall be compacted in six (6) foot lifts by a <br /> sheep's foot roller. The outslope of the fill shall not exceed 2H:1 V. <br /> 8 <br />