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City of Pleasanton—Villages at the Quarry Project 15183 Consistency Checklist Consistency Checklist 151 exceedances in stormwater drainage systems or the creation of substantial additional sources of polluted runoff would be less than significant. Proposed Project Analysis and Conclusion The proposed project would connect to the City’s existing system at Busch Road and Ironwood Drive. A Preliminary Stormwater Control Plan (Appendix G) was prepared for the proposed project by Kimley-Horn Associates in November 2023. The Preliminary Stormwater Control Plan determined that the proposed project would include approximately 1,348,814 square feet of new impervious surface area on the project site. The proposed project leaves approximately 41 percent of the project site pervious, which includes the bioretention areas, park, and landscaping. The proposed project minimizes stormwater runoff by directing all runoff from impervious surfaces to vegetated bioretention areas. The landscaping would also be required to meet State standards for water efficiency. Additionally, the proposed project would meet the hydromodification requirements with on-site controls, which prevent increases in runoff flow and volume. The project site would also employ stormwater source controls to reduce the likelihood of contamination during the operation of the proposed project. Therefore, there are no environmental effects that are peculiar to the proposed project. The proposed project would not result in a new or more severe adverse impact that was not previously identified in the Housing Element Update FEIR. (iv) impede or redirect flood flows? Summary of Housing Element Update FEIR As depicted in the Housing Element Update FEIR in Exhibit 3.9-1, most of the rezoned housing sites are not located within a flood hazard zone. The Housing Element Update FEIR concluded that development consistent with the Housing Element Update would be subject to the General Plan policies and programs and Municipal Code, and compliance with those regulations would reduce the risks of flooding. Furthermore, federal and State agencies are also responsible for maintaining flood protection features in the City. Additionally, 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. Therefore,