Item 28 - Public Hearing - Amendment Application for the Village Santa Ana Specific Plan

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5 LESS -THAN -SIGNIFICANT ENVIRONMENTAL EFFECTS WITH MITIGATION INCORPORATED from nighttime construction activity could exceed the FTA's nighttime construction noise criterion of 70 dBA Leq at off -site residential uses. As such, implementation of Project -Specific MM N0I-1 would reduce noise levels during nighttime concrete pours by at least 10 dBA. Project -Specific MM N0I-1 requires a nighttime construction control plan and implementation of construction techniques, including installation of temporary noise barriers or enclosures during Phases 2 and 3 to protect sensitive receptors to the north and west, use of mufflers on construction equipment, and placement of construction equipment away from sensitive receptors. Therefore, impacts to construction noise during nighttime concrete pours would be less than significant with mitigation incorporated. Cumulative Impacts: The Project would not result in cumulative impacts concerning noise, with the implementation of mitigation. Findings: The City finds that changes or alterations have been required in, or incorporated into, the Project, which avoid or substantially lessen the significant environmental effect as identified in the Final Supplemental EIR. Specifically, the City finds that Project -Specific MM N0I-1 (listed previously) shall be implemented to reduce potentially significant noise impacts resulting from the Project. (Draft Supplemental EIR, p. 4.9-32.) Explanation of the Rationale: The rationale and facts supporting the above finding are fully developed in Section 4.9, Noise, pages 4.9-36 through 4.2-44 of the Draft Supplemental EIR. The following presents a summary of that rationale: Construction activities associated with the Project and cumulative growth may overlap, resulting in increased construction noise in the Project vicinity. However, construction noise primarily affects the areas immediately adjacent to a construction site. Due to the distance and intervening structures, cumulative construction noise from related projects would not be perceptible. With exception of the Related Bristol Specific Plan Project, the related projects are located at distances well removed from the Project site. The Related Bristol Specific Plan Project is located directly to the east of the Project site of which construction of the area closest to the Project would not overlap (Related Bristol Specific Plan Phase 1 construction start 2026) with construction of the Project in the area directly adjacent (Project Phase 4 construction start 2036). The Related Bristol Specific Plan Project is anticipated to be completed in 2036. With the rapid attenuation of noise with distance, construction noise from the Project and Related Bristol Specific Plan Project would not combine to result in significant cumulative effects. The Project would implement Project - Specific MM N0I-1 to reduce noise levels during nighttime concrete pours by at least 10 dBA by requiring a nighttime construction control plan and implementation of construction techniques, including installation of temporary noise barriers or enclosures during Phases 2 and 3 to protect sensitive receptors to the north and west, use of mufflers on construction equipment, and placement of construction equipment away from sensitive receptors. In the unlikely event that nighttime concrete pours for both the Related Bristol Specific Plan Project and the Project occur on the same nights in the vicinity of each other, both projects would be required to obtain a permit from the City, including development of a nighttime construction noise control plan, as specified in the respective project -specific noise mitigation measures, which would reduce noise levels below the significance criteria. Cumulative impacts related to mobile, stationary, and vibration City of Santa Ana The Village Santa Ana Specific Plan Project August 2025 CEQA Findings of Fact and Statement of Overriding Considerations 5-15