Planning Commission Agenda Packet 09092026

City of Pleasanton—Additional Housing Sites Rezonings Project CEQA Guidelines Section 15164 Addendum Addendum 77 and the proposed project would not result in a new or more severe adverse impact that was not previously identified and disclosed in the Prior FEIR. No further analysis is required. iv) Seismic-related Ground Failure, Including Landslides Summary of Prior FEIR Refer to the summary under Impact VII(a)(ii). Proposed Project Analysis and Conclusion None of the proposed sites are located within a seismic-induced landslide hazard zone. Despite the lack of risk to these sites, future on-site development would be required to comply with applicable CBC, Municipal Code requirements, and the General Plan in order to protect structures from potential future increase in ground failure or landslide risk. Therefore, impacts would be less than significant, and the proposed project would not result in a new or more severe adverse impact that was not previously identified and disclosed in the Prior FEIR. No further analysis is required. b) Soil Erosion or Topsoil Loss Would the project: Result in substantial soil erosion or the loss of topsoil? Summary of Prior FEIR According to the Prior FEIR, development consistent with the General Plan would result in limited grading activities, generally confined to shallow excavations for building pads, foundations, utilities, and access roads, with most ground disturbance involving only minor changes in elevation. Deeper cuts may be required in certain upland or underground utility areas. Related erosion and sedimentation impacts would be minimized through compliance with Regional Water Quality Control Board (RWQCB) requirements under the National Pollutant Discharge Elimination System (NPDES) permit program, including preparation and implementation of a Storm Water Pollution Prevention Plan (SWPPP) and associated Best Management Practices (BMPs). The City and County also require an Erosion and Sediment Transport Control Plan, designed and overseen by qualified professionals throughout construction. Therefore, with adherence to applicable regulatory measures, soil erosion hazards within the Planning Area would be less than significant. Proposed Project Analysis and Conclusion Future development at the proposed sites would likely involve construction activities such as stockpiling, grading, excavation, paving, and other earth- disturbing activities that could result in soil erosion or the loss of topsoil. Soil