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City of Pleasanton 2023-2031 (6th Cycle) Housing Element Update CEQA Findings of Fact and Statement of Overriding Considerations 32 FirstCarbon Solutions Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480022/FOF/21480022 Pleasanton Housing Element FOF.docx These policies and programs include, but are not limited to, Goal 2, Policy 5, Programs 5.1, 5.2, 5.3, 5.4, 5.5, Policy 6, Programs 6.1, 6.2, 6.3, 6.4, 6.5, and 6.6, and Policy 7, which would implement standards to assist City decision-makers in the evaluation of development proposals and management of geologic hazard areas. Development consistent with the Housing Element Update would be required to comply with Chapter 20.08 of the Municipal Code, which implements the CBC. The CBC includes requirements to address soil-related hazards, such as expansive soils. Under Section 17.12.100 (Additional Regulations) of the Municipal Code, the HCD, with the consent of the City Council, may adopt such standards or regulations as are necessary to protect the public from geologic hazards. Future proposed projects located within areas susceptible to expansive soils would be required to conduct an environmental analysis at the time a specific project is defined, including preparation of site-specific soils and geologic reports for review and approval by the City Engineer, and incorporation of the recommended programs during construction. (Draft Program EIR, Page 3.6- 31–32). Potential Effect Impact GEO-5: Development consistent with the Housing Element Update, rezonings, and General Plan and Specific Plan Amendments would not have soils incapable of adequately supporting the use of septic tanks or alternative wastewater disposal systems where sewers are not available for the disposal of wastewater. (Draft Program EIR, Page 3.6-32). Findings: Less than significant impact. Facts in Support of Findings: Most of the potential sites for rezoning are infill sites; thus, new development consistent with the Housing Element Update would primarily occur on parcels that already contain existing homes or businesses. As such, development consistent with the Housing Element Update would be served by the existing sewer system, and most new development would connect to existing sewer lines. Should any new development require the installation of septic tanks or alternative wastewater disposal systems, the General Plan includes policies and programs to ensure that new development can be feasibly constructed according to soil conditions. Program 5.2 requires a site-specific geologic and/or geotechnical engineering study prior to development for areas with slopes equal to or greater than 20 percent. Program 5.2 requires the mitigation of potential geologic safety hazards during the installation of infrastructure to be incorporated into project design, which would also ensure that the development of septic tanks or alternative wastewater disposal systems can be constructed according to soil conditions. Program 5.5 discourages development, including the development of septic tanks, in areas with high risk of geologic hazards. Chapter 15 (Sewerage) of the Municipal Code includes provisions to protect the public health and safety by establishing and providing a mechanism for enforcing performance standards for private sewer laterals that connect or are connected to a public sewer main, and to maintain all parts of the sewer system and reduce and prevent sanitary sewer overflows. Section 15.16.020 (Private Disposal of Sewage) requires that a permit be obtained for the installation of individual waste disposal systems, including septic systems, and that all work comply with the provisions of Chapter 15.16.020, including meeting the minimum requirements of the County health department and any applicable provisions of City Council policies. (Draft Program EIR, Page 3.6-32– 33).