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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 47 Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480022/FOF/21480022 Pleasanton Housing Element FOF.docx storm drain capacity and would be required to pay its fair share of the storm drainage system improvement costs. Impacts to Flood Flows: Most of the potential sites for rezoning are not located within a flood hazard zone. Site 3 (PUSD-Donlon), 4 (Owens, Motel 6 and Tommy T), 5 Laborer Council), 6 (Signature Center), the southwestern portion of Site 7 (Hacienda Terrace), and the western portion of Sites 22 (Merritt) and 29 (Oracle) are within the 500-year FEMA flood hazard zone. None of the potential sites for rezoning are within the 100-year FEMA flood hazard zone. A small portion of the northwestern portion of the city, within and surrounding the Chain of Lakes, is within the 500-year FEMA flood hazard zone, as well as land on either side of the Arroyo Valle traversing the city from east to west, and land to the east and west of I-680. General Plan Program 2.2 of the Water Element requires compliance with Zone 7 policies and standards related to restoring riparian corridors when flood control activities require channelization. Similarly, Program 2.2 requires new development to utilize habitat preservation and reclamation measures when designing projects that have flood control included to limit impacts on plants and wildlife. Program 3.6 prohibits new septic systems, automobile dismantlers, waste disposal facilities, industries utilizing toxic chemicals, and other potentially polluting uses in areas that could impact flood waters. Program 9.1 requires new development to pay its fair share of flood control improvements costs included in Zone 7’s Master Plan. Additionally, the Public Safety Element includes Goal 4, which requires development to minimize the risks to lives and property due to flood hazards. In support of Goal 4, the General Plan includes Policy 15, which prohibits all development within the 100-year flood zone unless mitigation measures that meet Federal Insurance Administration (FIA) criteria are provided. Further, Program 15.1 requires all development to abide by the regulations of the NFIP. All future development consistent with the Housing Element Update would be required to comply with policies contained in the General Plan. Municipal Code Chapter 17.08 (Flood Damage Prevention) provides guidance to prevent losses due to flood conditions. Specifically, Section 17.08.040 (Methods of Reducing Flood Losses) provides methods and provisions that control filling, grading, dredging, and other development activity which may increase flood damage. Section 17.08.170 (Standards—Subdivisions) states that all preliminary subdivision proposals shall identify the flood hazard area and final subdivision plans shall minimize flood damage. Section 17.08.190 (Floodways) provides provisions and requirements for development in or near floodways. Section 17.08.140 (Administrator–Duties and Responsibilities) details the flood review that new development must undergo. All future development consistent with the Housing Element Update would be evaluated on a project-by-project basis for impacts related to flooding and would mitigate impacts as appropriate. (Draft Program EIR, Page 3.9-31–34). Potential Effect Impact HYD-4: Development consistent with the Housing Element Update, rezonings, and General and Specific Plan Amendments would not be located in a flood hazard zone, tsunami, or seiche zone, or risk release of pollutants due to project inundation. (Draft Program EIR, Page 3.9-34). Findings: Less than significant impact.