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<br />perennial rye or equivalent mix at a rate of l0 lbs/acre by broadcast seeding or by hydroseeding. This is a <br />temporary seeding designed to halt erosion of the stockpile material into the drainage. <br />~Dverburden/topsoil will be placed to a l2-in. minimum depth where [he 15-ft wide access roads on the steeper <br />reclamation benches will be located. This is on the "outboard" edge of each bench. These access roads are <br />for use of the hydroseeder to complete revegetation and for access to monitor the success of revegetation. <br />Backfill will slope upward from these access roads at a maximum of 1H:1 V and a minimum of 20H:1 V. The <br />l:l slopes will typically be located on the upper benches of the west side of the quarry, where placement of <br />major amounts of overburden and/or structural fill, etc., will be located and visual impacts of the quarry will <br />be lessened. Depending upon the amount of available backfill, backfill slopes could be less than 1:1. An <br />illustration of typical reclaimed benches was included as Figure E-1 in Amendment No. 4. Figure E-l in this <br />Amendment No. 5 illustrates the newly-proposed engineered fill slope in the North Quarry. A discussion of <br />the design and construction of the engineered fill slope is included in the Geotechnical Stability Exhibit below. <br />Where practical, a dozer will track at right angles to the slope to create indentations. This has proven effective <br />in slowing erosion, retaining moisture, and catching grass seed. Also, [he dozer can create swales at right <br />angles to the slope to also achieve the above-mentioned effects and this will also create a more natural <br />appearing slope. In some locations, unavoidable, localized, minor failures may occur on mined benches which <br />will serve to further break up the symmetry of mining and create more natural looking reclaimed slopes. <br />Equipment used for backfilling will be a D-9 sized dozer, a 988 B sized loader, and a 50-ton haul wck, or <br />approximate equivalents. <br />5-03. GRADING <br />Grading of fill material will be performed on all benches. In general, fill material will be graded to slopes <br />appropriate to the soil type and terrain of the area. Slopes will be graded to minimize erosion and to facilitate <br />revegetation. Some portions of the highwalls will remain as highwalls. The graded slopes will vary between <br />20:1 and 1:1 (horizontal vertical). Final grading will create a surface [hat is variable and somewhat irregular <br />to give a more natural appearance while effectively carrying away drainage. A D-7 or D-9 sized dozer will <br />be used for grading. After the aggregate plant has been removed, the exposed ground will be ripped, graded, <br />and scarified prior to topsoil placement and revegetation. <br />5-04. REVEGETATION <br />Revegetation will be performed approximately on a yearly basis, preferably in the late Fall (November), for <br />any area that has been backfilled, graded, and shaped. Typical acreage having undergone hydroseeding in a <br />given year to date amount to between one and five acres. This may include acreage that has previously been <br />seeded, but which has required overseeding. Revegetation will be accomplished to mimic as closely as <br />~i.WROIECR130'OPOOTTFXI~AAffNpOS.TXT V - 3 <br />