2024-053 - Final Supplemental for The Related Bristol Specific Plan Project

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volume of traffic generated by the proposed Project on MacArthur Boulevard, between SR-55 SB Ramps and SR-55 NB Ramps, would exceed 1.5 dBA for an ambient noise environment of 65 dBA and higher when comparing Year 2045 With proposed Project conditions to existing conditions. However, the proposed Project's incremental contribution would be 0.1 dBA (i.e., far below a 3.0 barely perceptible increase and below the City's 1.5 dBA increase). Therefore, although related cumulative projects and growth would increase traffic noise levels along this segment, the proposed Project's incremental effects would be less than cumulatively significant. The GPU FEIR identified significant and unavoidable impacts for traffic noise; but did not analyze this segment of MacArthur Boulevard. However, GPU FEIR Figure 5.12-5 and Figure 5.12-10 show that this segment of MacArthur Boulevard (between SR-55 SB Ramps and SR-55 NB Ramps) is also within the 70+ dBA contour of SR-55). Therefore, the year 2045 noise level of 69.3 dBA would be lower than the SR-55 traffic noise in this area. Overall, cumulative operational noise impacts from related projects, in conjunction with noise from the proposed Project would not be cumulatively considerable and cumulative traffic noise impacts would be less than significant. (Draft Supplemental EIR at pp. 5.9-32 through 5.9-36.) N. Population and Housing The geographic area in which cumulative impacts to population and housing would occur is the City of Santa Ana, and summary of projections utilized in this analysis of cumulative population and housing impacts is from the summary of the GPU Land Use Element and GPU Final EIR, which evaluates conditions contributing to the cumulative population and housing growth effects. Implementation of the proposed Project would result in 3,750 additional multi -family residential units and 200 senior living/'continuum of care units, as well as 350,000 SF of retail uses and a 250- room hotel. The proposed residential units are within the GPU planned increase in residential units within the South Bristol Street Focus Area. The estimated 9,238 residents at buildout and complete occupancy (a conservative estimate as vacancy in the City is 3.5 percent) would be 48 percent of the GPU FEIR estimated buildout for the South Bristol Street Focus Area, and the 1,092 jobs would consist of 148 percent of the anticipated growth in jobs within the South Bristol Street Focus Area. Hence, the increase in population and housing that would occur from the proposed Project would not exceed those anticipated from buildout of the GPU, as identified in with the GPU Final EIR. Development of the proposed Project in combination with other development projects in the vicinity would result in a cumulative increase in population. However, the proposed Project's portion of the cumulative increase is within those anticipated by the GPU Final EIR. Thus, the proposed Project would not generate any new or increased cumulative impacts related to population and housing. The addition of housing within the Project area would have a favorable effect on the jobs -housing balance, which could reduce environmental effects of long commute trips, such as air quality and greenhouse gas emissions. Also, infrastructure improvements to accommodate the proposed development on the Project site are based on the GPU development assumptions for the site. As a result, no extension of infrastructure would occur that could induce cumulative growth beyond that assumed with buildout of the GPU. Furthermore, infrastructure upgrades and extensions that may be included in related projects would not affect or be related to the proposed Project. Therefore, proposed Project impacts are less than cumulatively considerable, and therefore, less than significant. (Draft Supplemental EIR at pp. 5.10-1 1 through 5.10-12.)