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City of Pleasanton 475 and 493 St. John Street Mixed-Use Project 48 hazardous materials in large quantities (see Section 4.7, Hazards and Hazardous Materials); the project would not risk substantial release of pollutants due to project inundation. Impacts would be less than significant. Although not discussed in the Final EIR, the project would not conflict with or obstruct implementation of a groundwater management plan. The project site overlies the Livermore Valley Groundwater Basin, which is managed by the Zone 7 Water Agency. As discussed above and further in Section 4.14, Utilities and Service Systems, the DSP area would have adequate water supply and would not result in a substantial decrease in groundwater supplies. The project has been accounted for in water demand estimates for the DSP area; therefore, the proposed project would not conflict with or obstruct implementation of a groundwater management plan. Impacts would be less than significant. Effects and Mitigation Measures No new or substantially more severe significant effects would occur to hydrology, drainage, and water quality compared with those identified in the Final EIR, and no new mitigation measures are necessary. Conclusion Impacts would be less than significant, similar to the Final EIR, and no significant new or substantially increased hydrology, drainage, and water quality impacts would occur compared to those identified in the Final EIR. 5.9 Land Use, Population, and Housing Impacts Identified in the Certified Final EIR The Final EIR determined that the DSP would not physically divide an established community, as the DSP would facilitate infill development of vacant land and redevelopment of existing properties in the urbanized downtown area of Pleasanton. The goals and policies of the DSP, as well as its land use plan, were drafted and designed to promote compatibility with existing land uses. The Final EIR concludes that impacts to physically dividing an established community would be less than significant. Additionally, the Final EIR determined that the DSP would not conflict with applicable land use plans, policies, or regulations adopted for the purpose of avoiding or mitigating an environmental effect. Impacts would be less than significant. The Final EIR determined that the DSP would not directly or indirectly induce substantial population growth. The Final EIR estimated that the DSP would facilitate a 29 percent increase in the DSP area’s population by 2040, compared to 2018 population levels, which is equivalent to a 1.2 percent annual increase in DSP area population. The Final EIR determined that this 1.2 percent annual increase is consistent with population projections prepared by the Association of Bay Area Governments, the California Department of Transportation, and the California Department of Finance. Therefore, the DSP would not induce substantial unplanned population growth, and impacts would be less than significant. Because the DSP is intended to redevelop underutilized properties within the DSP area, the Final EIR determined that development facilitated by the DSP would be unlikely to result in the displacement of significant numbers of existing residents or housing units. The DSP does not propose to convert established residential areas into non-residential land uses, and existing residential areas would