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4 Environmental Analysis 4.17 Utilities and Service Systems Tracy Subbasin, and the groundwater budget indicates that there is a surplus supply of just over 4,800 AFY. Thus, the Tracy Subbasin could easily support this Project (Appendix H). As an alternative or as a supplement, the City of Tracy has surplus water in normal years in both the near term and the long term and could provide water for the Project. In single dry years, the City has a deficit and may not be able to support the Project. However, in a multi-dry-year scenario occurring by the year 2030 or earlier, the City has a surplus of water adequate to supply the Project (Appendix H). Ultimately, due to the low amount of water used during the construction and operation of the life of the Project and the ample availability of the Tracy Subbasin to easily support the Project, the Project would have sufficient water supplies during normal, dry, and multiple dry years. Impacts would be less than significant. Mitigation: None required. IMPACT 4.17-3: Would the project result in a determination by the wastewater treatment provider, which serves or may serve the project that it has adequate capacity to serve the project's projected demand in addition to the provider's existing commitments? (No Impact) Wastewater disposal needs at the proposed Project site during construction and decommissioning would be provided on-site via portable toilet facilities, with sanitary disposal occurring at an off-site facility. No permanent sanitary facilities would be required during operations. Public wastewater treatment services would not be required for the Project and no increase in demand for wastewater treatment services would occur with implementation of the Project. Therefore, the Project would not result in a determination by the wastewater treatment provider that said provider has inadequate capacity to serve the Project's demand in addition to the provider's existing commitments. Therefore, the proposed Project would have no impact on the projected demand and service of local wastewater treatment providers. Mitigation: None required. IMPACT 4.17-4: Would the project generate solid waste in excess of state or local standards, or in excess of the capacity of local infrastructure, or otherwise impair the attainment of solid waste reduction goals? (Less than Significant Impact) The proposed Project would not demolish any structures and the Project components would all be delivered for on-site assembly. The proposed Project would generate small quantities of construction debris from site preparation activities and during installation of the battery energy systems and associated infrastructure. Refuse generated during Project construction would be disposed of at either the Foothill Sanitary Landfill or the North County Recycling Center and Sanitary Landfill, both of which service San Joaquin County. Since the proposed Project is an energy storage facility and would have few employees regularly on-site, operation of the proposed Project would generate a small amount of solid waste (less than 1 cubic yard of waste per week), which would be a negligible increase in solid waste generation on-site. Griffith Energy Storage Project 4.17-11 Tetra Tech/SCH 2022120675 Draft Environmental Impact Report August 2023