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Community Plan Exemption Checklist City of Santa Ana Gary Avenue Business Park Project 46 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 5.5 CULTURAL RESOURCES. Would the project: a) Cause a substantial adverse change in the significance of a historical resource pursuant to in § 15064.5? b) Cause a substantial adverse change in the significance of an archaeological resource pursuant to §15064.5? c) Disturb any human remains, including those interred outside of formal cemeteries? Summary of Impacts Identified in the GPU EIR The Final Recirculated GPU EIR addressed cultural resource impacts on pages 5.4‐26 through 5.4‐31. Historic Resources. The GPU EIR described that certain development pursuant to the GPU may not be able to avoid impacts to historical resources. Mitigation Measures CUL-1 and CUL-2 would reduce most impacts to a less than significant level. However, if significant impacts cannot be avoided, the City shall require, at a minimum, that the affected historical resources are documented consistent with Mitigation Measure CUL-3. The GPR EIR determined that unavoidable impacts to historical resources resulting from future development under the GPU would be reduced to the maximum extent feasible but would still be significant with implementation of Mitigation Measure CUL-3. Archaeological Resources. The GPU EIR discussed that development involving ground disturbance has the potential to impact known and unknown archaeological resources, and details that eight archaeological resources have been recorded within the City, including four prehistoric sites, one multicomponent site, and three historic isolates. The City includes locations may have been used for prehistoric Native American occupation, and buried resources may remain. The EIR determined that there is a moderate likelihood that intact subsurface archaeological resources would be encountered during redevelopment. Therefore, EIR mitigation requires that Phase I Cultural Resources studies be completed before ground disturbances and demolition activities are permitted to occur. The GPU EIR included Mitigation Measures CUL-4 through CUL- 7 to reduce potential individual and cumulative impacts associated with future development and redevelopment. Mitigation Measure CUL-4 requires an archaeological resources assessment be conducted for future development projects to identify any known archaeological resources and sensitivity of the site. Mitigation Measures CUL-5 through CUL-7 detail the next steps required should the archaeological resources assessment identify known resources or determine the site to have high or moderate resource sensitivity. The EIR determined that upon compliance with Mitigation Measures CUL-4 through CUL-7, individual and cumulative impacts to archaeological resources would be reduced to less than significant levels. Human Remains. The EIR determined that the likelihood that human remains may be discovered during clearing and grading activities is considered extremely low. In the unlikely event human remains are 8/22/2022 Planning Commission 2 – 85