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• The topsoil from the Water Treatment area will be used to reclaim that area. Similarly, the portal bench <br />stockpile will be used to reclaim the bench itself. These piles can be easily moved a short distance by a <br />D-7 dozer and spread over the desired area. <br />The main stockpile of 7,182 cy will be moved by loader and truck and spread with a D-7 dozer. <br />16. Harrow Topsoil at the Whirlwind Portal Area <br />Harrowing topsoil at a grade of 3H:1 V requires a tractor and disc. The area to be harrowed is 8.07 <br />acres of topsoil replacement area + 1.82 acres of original stockpile area = 9.89 acres. <br />17. Re-Seed, Mulch, and Block the Whirlwind Portal Area <br />The area of seeding and mulching is the same as that for harrowing topsoil: 9.89 acres. The seed mix is <br />the same as that for the Packrat Portal. Hydromulching and hydroseeding methods will be used at this <br />• location since it has areas of 3H:1V slopes and the area is large enough to justify the mobilization of <br />the hydroseeding truck. Wood fiber mulch will be included at the rate of 3,000 pounds (lbs) per acre. <br />Tackifier will also be applied. <br />Blocking access to the reclaimed Whirlwind portal area will be more difficult than the Packrat road <br />because the area is open and the slopes are relatively gentle. It may be preferable to leave the fence and <br />gate along the road in place until the area has achieved revegetation standards and then remove them at <br />the same time as the sediment pond. For reclamation costing purposes, construction of a berm and <br />ditch over a 200-foot linear distance is assumed in this area along with the strategic placement of <br />boulders salvaged from the Packrat road berm. This work would be done with a D-7 dozer or <br />equivalent. <br />• <br />Whirlwind Mine 07 (rev. April OS) E-15 <br />