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0 2.05.3 <br />storage area will be approximately 20 feet wide, 30 feet deep and the walls <br />will be 6 -feet high. Commercially available dumpsters may be used in lieu of <br />the concrete structures. Non -coal waste will also be stored in dumpsters <br />located in areas defined in 2.05.3(8). <br />Temporary Gob Piles <br />Gob will be periodically transported from the underground workings on the <br />mine conveyors. At the D -Seam portal transfer tower, gob is transferred to <br />the gob conveyor. The gob is stacked in a temporary gob pile which is <br />located near the transfer tower on the D -Seam. Gob from the B -Seam will be <br />transferred from the transfer tower via steel chute to a concrete gob bin. The <br />gob is then handled by front -end loader and trucks and transported to the <br />permanent gob disposal area. Certain conditions such as inclement weather <br />or severe winter conditions may preclude access to the permanent gob pile <br />for extended periods of time. Therefore, gob may be stored in the temporary <br />gob piles for up to 30 days. Up to 1500 tons may be stored in the temporary <br />gob piles at one time. <br />Gob Bin <br />• Concrete structure, 15 feet wide, 30 feet long with 8 foot walls open on the <br />top and narrow end for front end loader access. <br />Rock Dust Storage Areas <br />The D -Seam portal bench and the B -Seam portal bench will have steel rock <br />dust silos approximately 50 feet high and 8 feet in diameter. A cinderblock <br />building under the silo, which houses a rock dust pod and a distribution <br />compressor is approximately 30 =X 20= X 8 =. <br />Pump House <br />A pre- engineered metal building designed to house the pump station which <br />supplies water to the mine operation. The pump house is located along the <br />Deer Trail Ditch. The building is approximately 18 feet by 12 feet with an 8- <br />foot eave height. <br />Mine Dewaterinq Pipe <br />A 6 to 8 -inch diameter PVC pipe that originates at the B -Seam portal bench <br />and terminates at Outfall 006. Outfall 006 is located northeast of the unit <br />- -- - - - - -- <br />---train- loadout structure. Map 41 -shows - the - route -of- the -mine dewatering <br />pipeline. <br />PR -12 2.05-17- 02/10 <br />(!114110 <br />