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City of Pleasanton 2023-2031 (6th Cycle) Housing Element Update CEQA Findings of Fact and Statement of Overriding Considerations 30 FirstCarbon Solutions Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480022/FOF/21480022 Pleasanton Housing Element FOF.docx implements the CBC and requires that foundations and other structural support features would be designed to resist or absorb damaging forces from strong ground shaking, liquefaction, and subsidence. Chapter 17.12 (Geologic Hazards) requires the consideration of geologic hazards when considering applications and permits for new real estate developments or structures for human occupancy. 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 seismic hazards (Draft Program EIR, Page 3.6-22–28). Potential Effect Impact GEO-2: Development consistent with the Housing Element Update, rezonings, and General Plan and Specific Plan Amendments would not result in substantial soil erosion or the loss of topsoil. (Draft Program EIR, Page 3.6-29). Findings: Less than significant impact. Facts in Support of Findings: Construction activities that disturb one or more acre of land surface are subject to the NPDES General Permit for Stormwater Discharges Associated with Construction and Land Disturbance Activities (Order No. 2012-0006-DWQ) adopted by the California State Water Resources Control Board (State Water Board). Compliance with the permit requires each qualifying development project to file a Notice of Intent with the State Water Board. Permit conditions require development of a SWPPP. The General Plan includes policies and programs that would reduce soil erosion and loss of topsoil. Program 6.2 requires developers to include erosion mitigation and Program 6.3 requires irrigation systems to be developed to minimize the potential for soil saturation and excessive runoff. The Municipal Code also contains rules and regulations to minimize soil erosion and the loss of topsoil. Chapter 20.08 (Pleasanton Building Code) of the Municipal Code incorporates the most recent CBC, which regulates grading activities, including drainage and erosion control. Section 18.68.110 (Development Plan) requires the use of best engineering practices to avoid erosion and the planting of newly created banks or slopes for erosion control. Section 9.14 (Stormwater Management and Discharge Control) provides requirements with the purpose of protecting and enhancing water quality within the city which includes requirements to reduce soil erosion and loss of topsoil. Section 9.14.080 (Reduction of Pollutants in Stormwater) requires BMPs for all construction sites in the city for erosion control, run-on and runoff control, sediment control, active treatment systems (as appropriate), and good site management through all phases of construction (including, but not limited to, site grading, building, and finishing of lots) until the site is stabilized by landscaping or the installation of permanent erosion control measures. (Draft Program EIR, Page 3.6-29–30). Potential Effect Impact GEO-3: Development consistent with the Housing Element Update, rezonings, and General Plan and Specific Plan Amendments would not be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on- or off-site landslide, lateral spreading, subsidence, liquefaction or collapse. (Draft Program EIR, Page 3.6-30). Findings: Less than significant impact.