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The project proposes a reclamation sequence and schedule that would minimize storage of topsoil. Topsoil removed from the mining area would be either used immediately for reclamation of completed mining areas or segregated and stockpiled. The soil stockpiles would be planted to prevent erosion. Sec. 3711(e) Topsoil and suitable growth media shall be redistributed in a manner that results in a stable, uniform thickness, consistent with the approved end use, site configuration, and site drainage. C.� The reclamation plan for the project proposes placement of five feet of fine-grained � sediment on a very gently sloping reclaimed agricultural field. Drainage would occur as sheetflow to drainage ditches. The design of the field indicates that the soil on the agricultural fields would be stable. Slopes along the perimeter of the lowered agricultural fields would be planted with native and non-native grasses. The steepness (1.5:1) of the reclaimed slope could present significant erosion potential and potential problems establishing and maintaining adequate vegetative cover. This impact is addressed by Mitigation Measures 4.2-3a and 4.2-3b. ment Title San Joaquin County Development The San Joaquin County standards far extraction of mineral resources are presented in Chapter 9-1415 (Quarry Excavation Standards) of the San Joaquin County Development Title. The standards include measures for control of erosion, revegetation, and slope stability hazards. The following standards apply to the proposed project: Sec. 9-1415.3(b) Stockpiling. No stockpiled soil or materials shall be placed closer than twenty-five 25 feet to a roe boundary except as provided ty ( } property�`tY in Subsection(m). The project proposes stockpiling of soil or other material along the eastern margin of the project site at a distance of not less than 50 feet of the property boundary. Although the project proposes a landscape berm along the eastern property boundary along Koster Road within 25 feet of the property boundary, construction of the berm is required by Sec. 9-1415.3(m) of the Development Title to address visual impacts of mining operations. Therefore, the project appears to be in compliance with this standard. Sec. 9-1415.3(d) Erosion Control. Protective vegetative planting, silt screen dams, or other approved methods shall be requiredwired where necessary for the control of erosion. An erosion and sediment control plan approved by Development Services Division shall be part of the reclamation plan. The reclamation plan for the proposed project details provisions for control of drainage and revegetation of reclaimed slopes and agricultural areas. The plan provides a drainage collection conveyance system. Fallowing approval of the drainage and erosion control aspects of the proposed project by the Development Services Division, the project would Draft Environmental Impact Report 4 ER-96-3