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43 <br />(8) Coal Processing waste and non -coal processing waste <br />Non -coal processing waste is disposed of in two separate ways. Trash waste <br />consisting of paper, cans, rags, and other assorted industrial waste associated <br />with the general office, shop and warehouse areas is hauled to the non -coal <br />waste disposal area for disposal (Map 12, Surface Facilities and Roads — West <br />Portal and Map 21 — Non -coal waste Disposal Area). As per Division request, <br />the operator plugged and abandoned the cased well in the area of the non -coal <br />waste disposal site. In addition, the east -west drainage on the north side of the <br />dump will be maintained rather than filled in as shown on Map 14 -Sediment <br />and Surface Water Control Plan — West Portal. Maintaining this drainage will <br />allow flow on the north side of the dump into the eastern most evaporation <br />pond. Other waste material such as machinery, scrap iron, equipment, which <br />has some salvage value, is placed in the scrap storage area shown on Map 12 - <br />Surface Facilities and Roads — West Portal. The non -coal waste disposal area <br />will be routinely compacted and covered to prevent combustion and airborne <br />wastes. The operator will place a maximum of 2 feet of soil or underground <br />development waste over the dump. The operator understands the areas must be <br />vegetated to meet the standards of Rule 4.15.8. In addition, operation of the <br />dump will meet state, federal, and county standards. <br />Petroleum products, which are used in the normal mining operation, will ne <br />collected and recycled where possible. Where recycling of the petroleum <br />products is not possible, they will be sold to local petroleum dealers as waste <br />oil. The operator will also dispose of all hazardous materials according to all <br />state and federal regulations. <br />Refuse Disposal Area <br />The refuse disposal area was permitted and construction began in 1984. Both <br />the RDA and the Development Waste Pile (DWP) have been undermined as <br />shown on Map 3 — Mine Plan and Map 22 -Mine Progress. No vertical or <br />differential displacement was observed as a result of subsidence. Old Allen <br />Mine workings range from 320 to 900 feet below the RDA. The area was <br />partially undermined about 1963 by room and pillar methods. Extraction <br />percentages within the area are estimated at less than 50%. It is believed that <br />the limited extraction has retarded subsidence and that the 35+ years that has <br />elapsed since mining is sufficient time for any adverse effects to become <br />evident. As a result, no adverse effects of underground mining on stability of <br />the waste piles are anticipated. <br />The refuse disposal area has a design capacity of approximately 12.7 million <br />cubic yards. This should be sufficient capacity to continue operations for <br />approximately 10 years of operation. The refuse belt extends to an elevation of <br />Section 2.05 RN -6 10/17/2016 <br />