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• 2.05.3 Non-Coal Waste Storaoe Non-coal waste will be stored at the portal level. Three concrete walls will be constructed to form the storage area. The walls will form a u-shape. The storage area will be approximately 20-feet wide, 30-feet deep and the walls will be 6-feet high. Commercially available dumpsters may be used in lieu of the concrete structure. Non-coal waste will also be stored in dumpsters located in areas defined in 2.05.3(8). Temoorary Gob Pile Gob will be periodically transported from the underground workings with the mine conveyor. At the portal transfer tower, gob is transferred to the gob conveyor. The gob is stacked in a temporary gob pile which is located near the transfer tower on the portal bench. The gob is then rehandled by front- end loader and trucks and transported to the permanent gob disposal area. Certain conditions such as inclement weather or severe winter conditions may preclude access to the permanent gob pile for extended periods of time. • Therefore, gob may be stored in the temporary gob pile for up to 30 days. Up to 1500 tons may be stored in the temporary gob pile at one time. Rock Dust Storage Area A steel silo approximately 50 feet high and 8 feet in diameter. A cinderblock building under the silo, which houses a rock dust pod and a distribution compressor is approximately 30'X 20' X 8'. Pump House A pre-engineered metal building designed to house the pump station which supplies water to the mine operation. The pump house is located along the Deer Trail Ditch. The building is approximately 18' X 12' with a 8-foot eave height. Coal Storage Piles Coal is stored in one of three open stockpiles at the portal level. The coal storage piles are; 1) run-of-mine; 2) crushed coal; and 3) stoker coal, Up to • 100,000 tons will be stored in the piles at any one time. A stacking tube is PR-06 2.05 - 13 - 8/01 /i ~PkovED ~/15~02