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• COAL PROCESSING HASTE BANKS (4.101 <br />The proposed coal refuse pile expansion will meet all applicable <br />regulatory requirements for disposal of coal processing waste, including <br />the following; <br />- Regular quarterly inspections with inspection reports to be <br />maintained at the mine site <br />- Construction of an adequate subdrainage system <br />- Establishment of effective surface drainage <br />- Maintenance of a minimum static factor of safety of 1.5 <br />- Compaction of 90 percent of maximum dry density <br />- Replacement of a minimum of four (4) feet of suitable material <br />and subsequent revegetation <br />These as well as other specific design, construction and maintenance <br />• practices are described in the preceding sections of this application for <br />technical revision and the referenced sections of the permit application <br />document. <br />• <br />14 <br />