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Community Plan Exemption Checklist City of Santa Ana Gary Avenue Business Park Project 35 Project Peculiar Impact that is not Substantially Mitigated by Uniformly Applied Policies Significant Impact not Analyzed as Significant in the Prior EIR Potentially Significant Offsite or Cumulative Impact not Discussed in the prior EIR Adverse Impact More Severe based on Substantial New Information No New Impact 5.3 AIR QUALITY. Where available, the significance criteria established by the applicable air quality management district or air pollution control district may be relied upon to make the following determinations. Would the project: a) Conflict with or obstruct implementation of the applicable air quality plan? b) Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is non-attainment under an applicable federal or state ambient air quality standard? c) Expose sensitive receptors to substantial pollutant concentrations? d) Result in other emissions (such as those leading to odors) affecting a substantial number of people? Summary of Impacts Identified in the GPU EIR The Final Recirculated GPU EIR addressed air quality impacts on pages 5.2‐45 through 5.2‐72. The GPU EIR determined that the GPU is inconsistent with the South Coast Air Quality Management Plan (AQMP) because buildout under the GPU would exceed the population estimates assumed for the AQMP and would cumulatively contribute to the nonattainment designations of the South Coast Air Basin (SoCAB). Air pollutant emissions associated with buildout of the GPU would cumulatively contribute to the nonattainment designations in the SoCAB. The EIR included Mitigation Measure AQ-2; however, due to the magnitude and scale of the land uses that would be developed, no mitigation measures are available that would reduce operation and construction impacts below South Coast AQMD thresholds. Therefore, the GPU determined that impacts related to the AQMP, and air quality emissions would remain significant and unavoidable. The GPU EIR also determined that construction activities associated with buildout of the GPU could generate short-term emissions that exceed the South Coast AQMD’S significance thresholds during this time and cumulatively contribute to the nonattainment designations of the SoCAB. Implementation of Mitigation Measure AQ-1 would reduce criteria air pollutant emissions from construction-related activities to the extent feasible. However, the EIR determined that construction time frames and equipment for site-specific development projects have a potential for multiple development projects to be constructed at one time, resulting in significant construction-related emissions. Thus, impacts were determined to be significant and unavoidable. 8/22/2022 Planning Commission 2 – 74