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City of Pleasanton 2023-2031 (6th Cycle) Housing Element Update CEQA Findings of Fact and Statement of Overriding Considerations FirstCarbon Solutions 27 Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480022/FOF/21480022 Pleasanton Housing Element FOF.docx iii) Seismic-related ground failure, including liquefaction. iv) Landslides. (Draft Program EIR, Page 3.6-22–23). Findings: Less than significant impact. Facts in Support of Findings: Given the city’s proximity to active faults, it is likely that the potential sites for rezoning would experience periodic minor to strong earthquake motion. However, estimating project-specific impacts would involve unreasonable speculation. As discussed below, policies and programs included in the General Plan, as well as the rules and regulations of the Municipal Code and California law, address potential impacts related to surface fault rupture, seismic shaking, seismic-related ground failure, and landslides. Surface Fault Rupture: The Calaveras Fault and its associated Alquist-Priolo Earthquake Fault Zone intersect the city limits along its western boundary. It underlies the western portion of Site 22 (Merritt), is just to the west of Site 2 (Stoneridge Shopping Center, Mall), and approximately .75 mile west of Site 3 (PUSD-Donlon). The Pleasanton Fault and its associated Alquist-Priolo Earthquake Fault Zone are just north of the city limits and just northwest of Site 29 (Oracle), approximately 0.3 mile northwest of Site 9 (Metro 580), approximately 0.5 mile west of Site 11 (Old Santa Rita Area), and approximately 0.75 mile southeast of Site 23 (Sunol Boulevard) and 24 (Sonoma Drive Area) (Exhibit 3.6-2). The Verona Fault and its associated Alquist-Priolo Earthquake Fault Zone is at the southern City limits, approximately 0.70 mile south of Sites 23 (Sunol Boulevard) and 24 (Sonoma Drive Area), approximately 0.90 mile south of Site 25 (PUSD-District), and approximately 1 mile south of Site 26 (St. Augustine). None of the rest of the sites are within 1 mile of the Alquist-Priolo Earthquake Fault Zone. Because portions of Site 22 (Merritt) are underlain by an Alquist-Priolo Earthquake Fault Zone and Site 2 (Stoneridge Shopping Center, Mall) is just to the east of the fault zone, there is a risk of ground rupture at these sites. Chapter 5 of the General Plan, Public Safety Element, includes policies and programs to minimize structural damage and minimize the exposure of people to risk of injury or death from structural failure in the event of surface fault rupture during an earthquake. Goal 1 focuses on minimizing risks to lives and property due to seismic activity. Policy 1 restricts development in areas prone to seismic safety hazards and includes programs that regulate development of habitable structures within fault zones, such as Site 22 (Merritt). Future development would comply with the restrictions included within the programs in Policy 1, such as Program 1.2, which prohibits construction of habitable structures within at least 50 feet of an identified active fault trace and Program 1.3, which prohibits construction of habitable structures within at least 100 feet of the most likely line of the fault trace. Compliance with these programs would be confirmed during the development review process. Policy 2 requires investigation of potential for seismic hazards during the development review process and implementation of soils engineering and construction standards to minimize potential dangers from earthquakes. The programs applicable to the Housing Element Update included in Policy 2 (including, but not limited to, Program 2.1, 2.2, 2.3, 2.5, and 2.6) require site-specific soils, geologic, and/or geotechnical engineering studies prior to development approval for habitable structures within Alquist-Priolo Earthquake Fault Zones, the design of buildings and infrastructure within applicable standards, review of reports and plans by the City Engineer, and professional inspections during construction.