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REPAIR PLAN <br />No. 3 Portal Backfill & Refuse Pile Sink Holes <br />Introduction <br />This narrative will provide the methods which the Operator plans to employ to repair the No. <br />3 Mine Backfill & Refuse Pile Sink Holes. <br />Equipment <br />A 4-wheel drive rubber tired backhoe with a front end loader bucket attachment will be used <br />to perform all of the work at the refuse pile sink holes. The backhoe and a 10-wheel 12 <br />cubic yard dump truck will be used to repair the No. 3 Mine backfill. <br />Borrow Sources <br />Common backfill will be obtained from the two sources shown on Figure 1. Borrow area no. <br />1._is-a_shale_slope that_constantly sloughs_onto the-C.ounty.Road: The-Operator_plans-to -- - --- - - <br />clean up the slope to generate material to perform the backfill required at the No. 3 Mine. <br />Borrow area no. 2 is immediately below the borrow area no. 1 at the elevation of the refuse <br />pile. The targeted material is the shale that has been cast over the slope most likely during <br />road construction and during clean-up of slopes above. Care will be taken to not undercut <br />the slopes at either borrow area. <br />Topsoil is available where shown on Figure 1. Topsoil will be hauled to the refuse pile sink <br />holes with the backhoe. Topsoil will be hauled to the No. 3 Mine backfill with the 10-wheel <br />dump truck loaded by the backhoe. <br />Construction Techniques <br />No. 3 Mine <br />Common material will be hauled with the 10-wheel dump truck to the No. 3 Mine backfill. <br />The material will be spread with the backhoe and wheel rolled to obtain a moderate level of <br />compaction. The common fill will be held 6 to 12 inches below finish grade to allow for <br />topsoil placement. Topsoil will be placed loose to fill the remaining area level with the <br />adjacent grade. <br />Sink Holes <br />The first task will be to scrape topsoil from around the perimeter of each sink hole. The <br />backhoe will excavate and then tamp the sink holes in an effort to collapse any hidden <br />voids. The backhoe will then fill each hole to within 6 to 12 inches below finish grade to <br />allow for topsoil placement. Topsoil will be placed loose to fill the remaining area level with <br />the adjacent grade. <br />Any damage to the site caused by the operation of the equipment will be repaired and <br />seeded and mulched if appropriate. <br />Seeding <br />The areas will be seeded with seed mix no. 3 shown on permit page 4-61. Weed free straw <br />mulch will be applied at the rate of one ton per acre. The straw will be crimped.