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3. PROJECT DESCRIPTION would be returned to agricultural use. In Phase IX,the silt ponds would be capped,the processing plant would be removed, and the plant site would be mined. At that time, a portable plant would be located on the capped silt pond(Phase IVA area)located north of the original plant site. USE OF TOP SOIL AND OVERBURDEN Once mining activities are complete,the site would be reclaimed to open space and agricultural uses. The slopes would be backfilled to 2:1 and hydroseeded. Excess topsoil would be placed at the bottom of the pits to enhance vegetative growth. The silt ponds,would be capped to match the adjacent elevations. The other mined out pits would be 70 to 120 feet below the surface. The plant, office, and other structures and objects would be removed and areas graded smooth. Refer to Figure 3-6 and Figure 3-7 for the proposed reclamation plan(Haul Route Option 1 and Haul Route Option 2). ` Topsoil would be distributed,watered, and graded to an approximately six inch thickness. After placement and grading are complete,the material would be track rolled(a method for the compaction of soil on a slope to increase slope stability and establishment of vegetation)to ~ prevent erosion and enhance seeding. The total volume of the topsoil would be 797,390 cubic yards. The final thickness would be less than the original thickness due to shrinkage,loss in ` handling,and intermixing. The total volume of overburden(other than topsoil) would be 6,644,917 cubic yards. It is estimated that the interbedded clays would be 14,730,000 cubic yards. The overburden and clays together total 21,374,917 cubic yards. Approximately 7.2 million cubic yards of material(including shrinkage factor) would be needed to build out the slopes from 3/4:1 to 2:1. REVEGETATION Upon final grading, all disturbed areas will be revegetated. Topsoil from the stockpiles would be .. placed on all final reclaimed 2:1 slopes and would be revegetated with a non-irrigated hydroseed mix consisting of 80 percent Zorro Fescue and 20 percent Rose Clover. Pit bottoms would be graded smoothly and uniformly flat and revegetated with an agricultural crop. END USES All reclaimed areas except for the slopes will be returned to agriculture. The slopes will be open space. 3.7 LIST OF PERMITS AND APPROVALS 3.7.1 PENDING APPROVALS The Surface Mining and Reclamation Act(SMARA)was enacted in 1975,and mandates the California Department of Conservation,California Geological Survey(CGS)to identify and RMC Pacific vernalis Quany Mining and Rulama inn Pmje t 3-25 FSA/203015 Adminis0auw Draft Eat Minch 2004 r