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E. An explanation of how the backfilled site will result in a post-mining configuration that is <br /> compatible with the approved post-mining land use: <br /> In the areas of the backfilled site where soils had insufficient depths of topsoil or undesirable physical <br /> characteristics for vegetation establishment, topsoil was added to the deficient areas. Suggested minimum <br /> depth of topsoil is 4-8 inches. To prevent over-compacting, tillage to loosen the soil to a depth of 4 <br /> inches should be done to create the ideal seedbed; firm enough to hold moisture and not be easily washed <br /> or blown away, yet loose enough for seed to develop root systems. As a general rule, the firmer the <br /> seedbed the better, as long as it is not compacted. Use of fertilizer or compost is recommended upon soil <br /> testing to determine fertilizer requirements to establish a variety of healthy, native plants suitable for the <br /> intended post mining land use of agricultural grazing and rangeland. <br /> F. A general engineering plan stating how the material will be placed and stabilized in a manner to <br /> avoid unacceptable settling and voids: <br /> Clean and inert topsoil is being immediately loaded upon clean dump trucks then hauled for Cesar Pit <br /> reclamation whereby the material is deposited in windrows,then using motor graders and front end <br /> loaders the topsoil is placed and graded to consist of minor undulation, perpendicular to the slopes, with <br /> rougher surfaces preferred over smooth, compacted areas prone to runoff. Topsoil is placed at a depth of <br /> 4-8 inches, and graded in lifts, with wheel compaction to prevent the creation of voids that can lead to <br /> settlement, and to ensure the placement of topsoil whether from onsite or this offsite source, is consistent <br /> with the approved post-mining land use. <br /> 2. Clarify if rubblized concrete or rock will be used as rip-rap: <br /> Rubblized concrete, size K or L, will be use to prevent erosion at all locations where arroyos or other <br /> naturally occurring storm drainage enter or exit the site as depicted on the revised Exhibit F, Reclamation <br /> Plan Map submitted herewith, at locations noted on the Map with corresponding legend labeled <br /> "Rubblized Concrete." <br /> 3. Clarify if all of the final reclaimed slopes will be graded/configured to vertical ratio of 3H;1V: <br /> As per rule 6.3.4(b),the final reclaimed slopes will be graded to a final slope configuration and vertical <br /> ratio of 3H(horizontal):1 V(vertical). <br /> 4. Specify the measures that will be taken to re-vegetate the site, including: <br /> A. Explain how the seedbed will be prepared to eliminate compacted conditions. State the type, <br /> application rate and soil incorporation methods of fertilizer application, if any. <br /> Upon areas of the graded and backfilled site where soils have insufficient depths of topsoil or undesirable <br /> physical characteristics for seedbed and vegetation establishment, topsoil is added to the deficient areas to <br /> create a seedbed prepared to eliminate overly compacted areas. Suggested minimum depth of topsoil is 4- <br /> 8 inches. To prevent over-compacting, tillage or scarify as necessary to loosen the soil to a depth of 4 <br /> inches to create the ideal seedbed; firm enough to hold moisture and not be easily washed or blown away, <br /> yet loose enough for seed to develop root systems. As a general rule, the firmer the seedbed the better, as <br /> long as it is not over compacted. The topsoil is placed and graded to consist of minor undulation, <br /> perpendicular to the slopes, with rougher surfaces preferred over smooth, compacted areas prone to <br /> runoff. <br /> 2 <br />