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r San Joaquin County Community Executive Summary Development Department quarry excavation permit. These standards have been incorporated into the project design. ❑ Stockpiling. No stockpiled soil or material shall be placed closer than twenty-five(25) feet to a property boundary unless it functions for screening, consistent with Chapter 9-1020. ❑ Private Roads. All private roads shall be maintained so as to control dust and traffic-control and warning signs shall be installed,if required by the Director of Public Works. ❑ Erosion Control. An erosion and sediment control plan shall be approved by the Development Services Division as part of the _ reclamation plan approval. ❑ Hours of Operation. Plant operations shall normally be carried out during the hours from 5:00 a.m. to 9:00 p.m.,with extensions if needed approved by the Director of the Community Development Department. ❑ Replacement of Topsoil. Topsoil shall be set aside and replaced and the site leveled in conformance with the excavation permit. L ❑ Weed Control. If noxious weeds are on-site, operations shall be carried out in accordance to instruction from the Agricultural Commissioner. .. ❑ Health Considerations. The project must include provisions for mosquito and other pest abatement, and a potable water supply and approved sanitary facilities for employees. ❑ Setbacks. No excavation may take place within 25 feet of any property line or right-of-way. w ❑ Slopes. Temporary interior cut slopes shall comply with state and federal OSHA standards. Final slopes shall not exceed 2H:1 V,unless site-specific geological and engineering analysis demonstrate through a 6. slope stability analysis that final slopes of 1.5H:1 V shall meet minimum stability factors of safety as required in Section 9-1415.2(d)(4). All slopes over 50 feet high shall be terraced a minimum of 12 feet. Terraces must be sloped back toward the fill and design such that runoff L is directed to collection points where it can enter catch basins and be conveyed to the toe of slope. A drainage plan shall be submitted to the Development Services Division for approval in conjunction with approval of the mining permit and reclamation plan. ❑ Fencing. Three-strand barbed wire fencing shall be maintained around the excavation area. ❑ Screening and Landscaping. Landscaped berms or other screening methods shall be used to screen views of the open pit from the public right of way and residences. ❑ Ponding. All water used in plant operations shall be conveyed to an enclosed system. ` ❑ Excavation/Reclamation Schedule. The reclamation plan shall show the stages of excavation, as required in Section 9-854. Excavation shall DeSilva Gates Quarry Project Draft Environmental Impact Report ES-7 As 05105.05