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ARCOSA <br /> undisturbed areas south of the existing quarry. Since topsoil will be in short supply we propose to use <br /> topsoil only on the side slopes of the quarry where rapid revegetation is most critical in stabilizing the <br /> slopes and minimizing erosion. The quarry bottom,which will be less susceptible to erosion, will be <br /> covered with 2 to 4 feet of overburden. Indications are that this material can be a reasonable plant <br /> growth medium when treated with appropriate soil amendments. <br /> As mining proceeds to the south and new areas are opened up, 12 to 24 inches of topsoil will be <br /> salvaged by pushing the material to the south with a dozer, removal of the underlying overburden and <br /> placing this material directly on areas to be reclaimed and, finally, picking up the salvaged topsoil with <br /> scrapers and spreading it directly over the newly placed overburden on the quarry slopes at a depth of <br /> 6 to 12 inches. If any topsoil remains after the side slopes are covered, it will be spread uniformly over <br /> the overburden which has been spread over the quarry floor. An intermediate screening step may be <br /> employed to remove rock from the overburden for sale as aggregate. <br /> As mentioned in Exhibit D, ongoing mining operations will include the use of ponds within the quarry. <br /> Moreover, the landowner has requested that one pond be retained post mining for use in stock <br /> watering. Consequently, provisions will be made for a permanent pond. Slopes at the pond will be no <br /> steeper than 3 H to 1 V from 5 feet above to 10 feet below the expected water level. <br /> Reclamation Sequence <br /> Contemporaneous reclamation involves pushing the overburden into the quarry to establish stable <br /> slopes. Then, when a new mining area is opened up, topsoil from this area is spread on the quarry side <br /> slopes and the overburden overlying the new area to be mined will be moved to cover the finished <br /> quarry bottom. <br /> Soil Preparation and Seedinq <br /> The overburden material after placement in the quarry bottom will be disced to the extent possible given <br /> the stoney nature of the material prior to seeding. Phosphorus and nitrogen fertilizer or manure will be <br /> added, presumably at rates somewhat higher than that for the topsoil covered side slopes based on soil <br /> sample analysis to be conducted once the overburden is emplaced. Efforts will be made to employ a <br /> grass land seed drill to seed the quarry bottom, however, the stoney soil medium may somewhat <br /> hamper its use. If, after placing the overburden, it appears that use of a seed drill is inappropriate, <br /> alternative seeding procedures may be employed, such as hydro seeding/mulching, or broadcast <br /> seeding and increasing the seeding rate as appropriate. <br /> Mulch will be applied to both the side slopes and the quarry bottom at a rate of 2 tons/acre. Where <br /> possible, the mulch will be crimped in the soil at a depth of 2 to 4 inches. Mulch material will be weed <br /> and seed free, long-stemmed native grass hay. <br /> The seed mix shown in Table E.1 will provide a vegetation mix that is suited to cattle grazing use and to <br /> a lesser degree,wildlife habitation. This mix will provide the greatest probability of reclamation, in that <br /> recommended species are based on soils, climate, and current reclamation practices. The seeding <br />