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San Joaquin County Community Project Description _ <br /> Development Department <br /> ■ Conveyer belts(commercial electric) <br /> ■ Haul trucks <br /> ■ Hydraulic excavator <br /> ■ Water truck. <br /> ■ Fuel and lubrication truck. <br /> ■ Asphalt oil tank trucks <br /> ■ Tractor-scraper(reclamation) <br /> Typical stationary equipment includes the following. <br /> ■ Diesel dragline and dredge(wet pit operation only) <br /> ■ Commercial electric-run asphalt concrete and rock processing plants _ <br /> ■ Commercial electric-run ready-mix batch plant <br /> ■ Propane-run aggregate dryers and asphalt oil heaters <br /> Topsoil Storage Berms _ <br /> Topsoil removed as part of mining operations would be stockpiled in a perimeter <br /> berm(Figure 2-7), or moved to a previously mined area being reclaimed. The — <br /> topsoil storage berms would be constructed in conjunction with the initial mining <br /> phase in the South Pit(Figure 2-8). When distinct soil horizons are present, <br /> stockpiled topsoil will be separated by soil horizon. Topsoil will be replaced _ <br /> with the horizons in the respective order. The topsoil removed from the South <br /> Pit would be used to construct a 5-foot high,20-foot wide(5 feet wide at the top) <br /> berm(Figure 2-9)that would be located between the South Pit and Koster Road <br /> and also between the active mining areas and Blewett Road. This excavated — <br /> topsoil would also be used to construct a portion of the berm along Stage D of the <br /> North Pit. Topsoil removed from Stage I and II of the North Pit will also be <br /> stored in topsoil storage berms. The topsoil storage berms would be protected <br /> from inadvertent disturbance or use by flagged staking or other identification <br /> and/or are proposed to be located a minimum of 15 feet from areas under active <br /> mining or disturbance. The topsoil storage berms would be seeded with a — <br /> mixture of grass seed and/or mulch to minimize erosion and would be landscaped <br /> to provide additional visual screening of the site. <br /> Water Usage <br /> Water would be used for dust control, aggregate processing, concrete production, <br /> and truck washing. Some water would be consumed by evaporative loss and loss <br /> in the product. The water would be supplied from onsite wells and existing <br /> irrigation pumps. Total recycled water usage(from settling ponds) is estimated <br /> DeSilva Gates Quarry Project <br /> Draft Environmental Impact Report 2-8 <br /> Jas astas.oe <br />