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• slopes in rock are excavated at a 0.25H:1 V. Rock bolts, wire mesh and shotcrete will <br />be used as necessary to stabilize the cut slope. A soil nail wall will be constructed to <br />increase the size of the portal bench. Three declined slope entries will be driven in an <br />easterly direction approximately 425 feet to the Blue Seam. Blue Seam mining will <br />be addressed in a separate permit revision. <br />Structures to be installed at the Bates Portal include a ventilation fan, conveyer drive <br />building, transfer building, 72 inch wide beltlines and retaining walls. A 240 foot <br />long (100 feet inby and 270 feet outby) 72 -inch portal beltline will exit the portal and <br />terminate at the transfer tower. A second 600 foot long 72 inch wide beltline will <br />convey coal in a westerly direction from the transfer tower to the existing breaker <br />building. Three retaining walls along the north side of the access road average about <br />eight feet high and are a total of 285 feet long. A detailed listing of the size of the <br />foundations of all buildings and proposed construction type is included in Exhibit 28 <br />— Bond Calculations. <br />Four types of material will be generated from the Bates Portal development. They are <br />topsoil, subsoil, common subsoil and bedrock subsoil. Topsoil will be removed and <br />stored in the topsoil storage pile #2. Subsoil will be stored in subsoil pile #1. Bedrock <br />and common subsoil will be stored in subsoil piles #2 and #3 respectively. <br />Slope development will generate coal mine waste. A temporary conveyor will be <br />installed to convey the coal mine waste to the east side of the clean coal stockpile. <br />The coal mine waste will then be hauled and placed on the conveyor that transports <br />• material to the development waste disposal area. <br />Maps 15 and 16 show disturbed areas on the site. The disturbance area boundary has <br />been established to include a buffer should additional disturbance activities become <br />necessary. The surface disturbance boundary shown on maps 15 & 16 will be the <br />boundary marked in the field in accordance with Rule 4.02. These markers will <br />consist of roof bolts or rebar covered with white PVC pipe. As portions of the site are <br />reclaimed, boundary markers will be moved to the reclamation limits of the disturbed <br />areas. <br />Two facilities, Apache Canyon Air Shafts #1 and #2 were reclaimed and Phase III <br />released. These facilities will be returned to production use for mine ventilation. The <br />TR -55 Page 2.05 -5e 04/8/11 <br />