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City of Pleasanton—Villages at the Quarry Project Consistency Checklist 15183 Consistency Checklist 136 The Housing Element Update FEIR concluded that if a rezoned housing site is suspected to contain hazardous materials, further site characterization and/or remediation work would be required to ensure that construction activities would not expose people or the environment to adverse effects, as required by MM HAZ-2. Therefore, with implementation of MM HAZ-2 and compliance with applicable federal, State, and local laws, as well as compliance with appliable plans and regulations, as enumerated in more detail in Section 3.8, Hazards and Hazardous Materials of the Housing Element Update FEIR, impacts related to the creation of a hazard to the public or environment would be less than significant. Proposed Project Analysis and Conclusion As discussed above, the Housing Element Update FEIR indicated that several of the rezoned housing sites are located near identified contamination sources that have not been fully remediated. MM HAZ-2 was included in the Housing Element Update FEIR, which requires the preparation of a Phase I ESA for sites affected by these areas. A Phase I ESA was prepared on March 11, 2022 by Cameron-Cole for the proposed project (Appendix F). The goal of the Phase I ESA is to identify the presence (or likely presence) of hazardous substances or petroleum products at the project site, under conditions that indicate an existing release, a past release, or a material threat of release of any hazardous substances or petroleum products into structures, the ground, groundwater, or surface water. The Phase I ESA identified several potential RECs associated with the project site; however, the Phase I ESA concluded that only one REC was present at the project site. Records that were reviewed by Cameron-Cole indicate hydrocarbon- impacted soils were previously documented in the southeastern portion of the project site. Remediation was performed at this area and a cleanup goal was achieved. Additional records indicate the presence of petroleum and PCB-impacted soil in surface and subsurface samples at concentrations above acceptable ESLs. Groundwater samples collected also identified limited groundwater impacts. Vertical and lateral petroleum hydrocarbon impacts have been identified in the vicinity of the subsurface “silo” area. The Phase I ESA concluded that the presence of soil and groundwater impacts at the project site above acceptable ESLs constitutes a REC at the project site.