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San Joaquin County Community Environmental Setting,Impacts,and Mitigation Measures Development Department Public Services and Utilities Impact PUB-2: Increased Demand for Wastewater Treatment Resulting in Alteration or Need for Expansion of Services (No Impact) The site is not currently served by public wastewater facilities. One single-family residence with an attached equipment building is located on the site and currently serves as the residence for the ranch foreman (Figure 2-2). A private septic system has been used to service this residence,which would be converted to an administration and site security office for the life of the proposed project operation. The operator plans to install a new septic tank or expand the existing system, as part of the project,which would require a permit from San Joaquin County Environmental Health Department(EHD). The system must be designed _ by a registered engineer, and test results(e.g., soil-type match)and percolation rates must be evaluated by EHD. No public wastewater treatment facilities would be required for the project. Since no demand would be placed on public wastewater systems,there would be no impact. No mitigation is required. ` Impact PUB-3: Increased Generation of Solid Waste Resulting in Alteration or Need for Expansion of Services (Less than Significant) _ The amount of solid waste generated from the typical daily operation of the quarry operation is considered relatively minor and is limited primarily to office _ and residential-type wastes generated by employees and administrative office operations. Office and shipping wastes are expected to be similar to those produced by a small office, with no special designation requirements. Solid waste from the facility would be stored on-site in designated containers and — would be disposed of in accordance with local, state, and federal regulations, including the San Joaquin County General Plan. Solid wastes generated from materials processing would include waste products from vehicles and machinery and waste products from sand and gravel processing. The waste products from vehicles and machinery used on the site — include motor oil, antifreeze, grease, filters, and cleaning solvents. Appropriate licensed contractors would remove all of these waste products from the site. Sand and gravel production waste would include silts from sand and gravel _ washing, concrete washout from concrete trucks, and unused asphalt. All of these waste products would be reused on-site. Overburden and non-marketable material would be used as base fill for reclamation and covered with a final layer of topsoil from stored stockpiles. For these reasons, this impact is considered less than significant. No mitigation is required. DeSilva Gates Quarry Project — Draft Environmental Impact Report 3.K-8 J8s 05105 OS