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-48- <br />The refuse pile will be the only area that will receive on-going <br />permanent reclamation. As the pile is constructed up the valley, the <br />lower portions of the fill will be graded to final configuration and <br />reclaimed. The pile has been designed such that, at any given time, <br />there will be a minimum of bare material on the side slopes of the fill. <br />Many other areas of the mine have received "interim reclamation <br />activities". The interim reclamation program consists of backfilling and <br />regrading those areas of the mine and loadout no longer used and <br />providing a vegetative cover to stabilize the disturbance. <br />Most of the mine will remain in its present configuration until the <br />termination of operations. At that time, the operator will reclaim all <br />disturbances as contemporaneously as practicable. Specific plans and <br />schedules for reclamation are presented in Section 4.4, Volume I of the <br />permit application. <br />The operation is in compliance with the requirements of this section. <br />][VIII. Coal Processing and Nan-Coal Processing waste - Rules <br />The applicant proposes to deposit underground development waste, excess <br />spoil and coal processing waste in a valley fill depicted on Drawings <br />D-4-9 through D-4-12. The application includes an analysis of the <br />processing waste pile's slope stability, which conforms with the prudent <br />state-of-the-art of embankment stability analysis. This analysis, <br />completed by Chen and Associates, Inc., determined that a static slope <br />safety factor of 1.8 and a dynamic slope safety factor of 1.5 would be <br />achieved by the configuration depicted, which exceeds the requirements of <br />the Regulations. <br />The application describes placement techniques which conform with the <br />requirements of Rule 4.10.4, including placement in lifts of less than 2 <br />feet in thickness and compaction to at least 9D% of AASNTO standard <br />designation T99-74. The facial slope of the proposed coal processing <br />waste pile attains an overall slope angle of 2.75:1 (horizontal to <br />vertical slope) with 20-foot wide terrace benches spaced on 50-foot <br />vertical intervals, which results in an interbank facial slope of 2.25:1 <br />(horizontal to vertical slope). <br />An old processing waste pile, located within the proposed waste pile <br />site, is currently the site of a waste fire. This waste is a pre-law pile <br />that was deposited by another operator in the 1960'x. The applicant <br />proposes to extinguish this fire, in conformance with the requirements of <br />Rule 4.11.1 so that there is no longer any fire hazard. <br />The applicant observes that the existing portions of the waste pile have <br />been inspected and that the completed waste pile will be inspected and <br />certified following completion of final reclamation. Rule 4.10.2 <br />requires, at a minimum, that quarterly inspections be completed of the <br />coal processing waste structure. The applicant will be required to <br />conform with the requirements ~of Rule 4.10.2. The coal processing waste <br />aspects of the permit application are found, by the Division, to be in <br />conformance with the requirements of this Section. <br />