Item 24 - Public Hearing for Amendments to the Transit Zoning Code

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d. Cause a substantial temporary or periodic increase in ambient noise levels in the project vicinity above levels existing without the project? TZC EIR Conclusions • The project is not located within an airport land use plan or within 2 miles of a public airport or public use airport. (DEIR Section 4.8.3: Effects Found to Have No Impact) • Construction activities associated with the proposed project would generate noise levels that exceed the noise standards established by the City of Santa Ana Municipal Code. (Impact 4.8-1: Less Than Significant with mitigation) • Operation of the proposed project could expose noise -sensitive land uses to noise levels that exceed the standards established by the City of Santa Ana General Plan. (Impact 4.8-2: Less Than Significant with mitigation) • Operation of the proposed project would not expose sensitive receptors on or off site to excessive groundborne vibration or groundborne noise levels, (Impact 4.8-3: Less Than Significant without mitigation) • Occupants of the proposed residential units would not be exposed to potentially significant vibration levels. (Impact 4.8-4: Less Than Significant without mitigation) • Physical impact from an increase in ambient noise levels could occur from the construction activities associated with the proposed project, an adverse effect on the nearby residents would not occur. (Impact 4.8-5: Less Than Significant) • No temporary or periodic noise impacts to on- or off -site receptors due to operation of the project. (Impact 4.8-6: Less Than Significant without mitigation) • Operation of the proposed project would not generate increased local traffic volumes that would cause a substantial permanent increase in ambient noise levels in the project vicinity. (Impact 4.8-7: Less Than Significant without mitigation)Operation of the Southern California Regional Rail Authority's (SCRRA) rail line would potentially expose noise -sensitive land uses located within the Transit Zoning Code (SD 84A and SD 84B) area to noise levels that exceed the standards established by the City of Santa Ana General Plan. (Impact 4.8-8: Significant and Unavoidable and no feasible mitigation) • Construction activities associated with the proposed project would generate or expose persons or structures to excessive groundborne vibration. (Impact 4.8-9: Significant and Unavoidable and no feasible mitigation) TZC EIR Mitigation Measures MM4.8-1 All construction activity within the City shall be conducted in accordance with Section 18-314(e) of the City of Santa Ana Municipal Code. (Impact 4.8-1 and Impact 4.8-9) MM4.8-2 Each project applicant shall require by contract specifications that the following construction best management practices (BMPs) be implemented by contractors to reduce construction noise levels: Two weeks prior to the commencement of construction, notification must be provided to property owners within 300 feet of a project site disclosing the construction schedule, including the various types of activities that would be occurring throughout the duration of the construction period Ensure that construction equipment is properly muffled according to industry standards and be in good working condition January 2025 39 Environmental Analysis