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Environmental Impacts of the Proposed Changes to the Original Project Addendum to the City of Pleasanton Downtown Specific Plan Final Environmental Impact Report 41 The Geotechnical Investigation evaluated soils at the project site and determined that soils have low expansion potential (Appendix D). Additionally, as discussed previously, the project would be required to comply with the CBC and the recommendations of the Geotechnical Investigation, which would further minimize risk associated with expansive soils. Therefore, the project would not result in substantial direct or indirect risks to life or property associated with expansive soils, and impacts would be less than significant. As discussed in the Final EIR for the DSP, development in the DSP area would be required to connect to existing wastewater systems. The project would not involve use of a septic system or alternative wastewater systems, and there would be no impact. Overall, with compliance with the CBC, PMC, and the recommendations made within the Geotechnical Investigation, the proposed project would have less than significant impacts associated with geology and seismicity. Effects and Mitigation Measures No new or substantially more severe significant effects would occur to geology and seismicity 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 geology and seismicity impacts would occur compared to those identified in the Final EIR. 5.7 Hazards and Hazardous Materials Impacts Identified in the Certified Final EIR Because the DSP would facilitate the development of commercial uses, the Final EIR acknowledges that development could require the routine use, transport, and disposal of hazardous materials. These materials would be subject to several federal, state, and local regulations pertaining to the use, transportation, treatment, disposal, and accidental release of hazardous materials, and compliance with these regulations would minimize the potential for the DSP to result in a significant hazard to the public or environment related to hazardous materials. Similarly, because the DSP would not introduce land uses that would handle or emit large amounts of hazardous materials such as industrial land uses, the Final EIR concludes impacts related to the release of hazardous materials would be less than significant. The DSP would introduce a variety of land uses within 0.25 mile of three existing Pleasanton Unified School District schools, as well as multiple childcare centers. While construction and operation of projects facilitated by the DSP would involve the use of hazardous materials, they would be in small quantities and would not present a substantial risk to nearby schools and childcare centers. As discussed above, the use, transport, and disposal of hazardous materials would be subject to several federal, state, and local regulations that would minimize the risk of hazardous emissions. Therefore, the Final EIR concludes that compliance with existing regulations would minimize impacts to schools and childcare centers to a less than significant level.