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refined health risk assessment which adequately and accurately evaluates health risk impacts associated I 36 <br />with both Project construction and operation, <br />Greenhouse Gas <br />Failure to linplement All Feasible Mitigation <br />The DEIR concludes that the proposed Project would result in 9,861.60 megatons of CO, equivalents per <br />year (MT COe/year), which would exceed the SCAQMD Tier 3 mixed -use screening threshold of 3,000 <br />MT CO,e/year (p. 5.6-22). Asa result, the DEIR concludes that the Project's GIG impact would be <br />potentially significznt fp. 5.6-22). <br />In an attempt to mitigate this impact, the DEIR states: <br />"The Project would include sustainable design features and comply with Title 24/calGreen <br />standards; however, approximately 60 percent of the GHG emissions would be generated by <br />vehicle trips. Neither the Project Applicant nor the Lead Agency (City of Santa Ana) can <br />substantively or materially reduce the vehicular -source GHG em ssione (p. 5.6-22). <br />Despite complying with Title 24 and CalGreen standards, the DEIR states that the Projeces GHG impact <br />would be significant and unavoidable (p. 5.6-22). However, while we agree that the Project's GHG <br />impact would be significant, the DEIR's assertion that the Proje:es GHG impact would be unavoidable <br />and cannot be mitigated further is incorrect. According to CEQA Guidelines § 15096(g)(2), <br />"When an FIR has been prepared for a project, the Responsible Agency shall not approve the <br />project as proposed if the agency finds any feasible alternative or feasible mitigation measures <br />within its powers that would substantially lessen or avoid any significant effect the project <br />would have on the environment" <br />As you can see, an impact can only be labeled as significant and unavoidable after all available, feasible <br />mitigation is considered." Review of the Project's proposed mitigation measures, however, <br />demonstrates that the DEIR fails to implement all feasible mitigation. Therefore, the DEIR's conclusion <br />that impacts are significant and unavoidable is unsubstantiated. As a result, additional mitigation <br />measures should be identified and incorporated in an updated FIR in arderto reduce the Project'sair <br />quality impacts to the maximum extent possible. Until all feasible mitigation is reviewed and <br />incorporated into the Project's design, impacts from GHG emissions should not be considered significant <br />and unavoidable, <br />Feasible Mitigation Measures Available to Reduce Construction Emissions <br />Our analysis demonstrates that, when Project activities are modeled correctly, construction emissions <br />would result in potentially significa nt impacts. Therefore, additional mitigation measures m ust be <br />identified and incorporated in a DEIR to reduce these emissions to a less than significant level. <br />d0 "Final Draft Guidanrc rnr Aavrtdne.arxi M rrtiEoting Air Qualify Imparm " WI I) APM, Fphn rary 2015, amfinhlP nt <br />hmw,/f ww.vallevair.ore/transoortatlon/GAMAQI-2615/FINAL-DRAFT-GAMAQI.PDF. P. 115, <br />14 <br />37 <br />75C-182 <br />