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4.13 Noise <br />Issues (and supporting Information <br />Sources) <br />Impact <br />Determination <br />in EIR <br />Any Substantial <br />Changes <br />Involving New <br />Significant <br />Impacts or <br />Substantially <br />More Severe <br />Impacts? <br />Any Substantially <br />Changed <br />Circumstances <br />Involving New <br />Significant Impact <br />or Substantially <br />More Severe <br />Impacts? <br />Any New <br />Information of <br />Substantial <br />Importance? <br />Project <br />Incorporates <br />Mitigation <br />Measure(s)? <br />NOISE: Would the project result in: <br />(a) Generation of a substantial <br />temporary or permanent <br />increase in ambient noise <br />levels in the vicinity of the <br />project in excess of <br />Significant and <br />No <br />No <br />No <br />Yes <br />standards established in the <br />Unavoidable <br />local general plan or noise <br />ordinance, or applicable <br />standards of other <br />agencies? <br />(b) Generation of excessive <br />Significant and <br />groundborne vibration or <br />Unavoidable <br />No <br />No <br />No <br />Yes <br />groundborne noise levels? <br />(c) For a project located within <br />the vicinity of a private <br />airstrip or an airport land <br />use plan or, where such a <br />plan has not been adopted, <br />within two miles of a public <br />No Impact <br />No <br />No <br />No <br />No <br />airport or public use airport, <br />would the project expose <br />people residing or working <br />in the project area to <br />excessive noise levels? <br />4.13.1 Impact Determination in the EIR <br />Substantial Temporary or Permanent Increase In Noise <br />The Certified EIR stated that the Overlay Zone has the potential to result in events that may <br />exceed permitted noise levels. The primary sources of noise associated with the Overlay Zone <br />would be construction activities and project -related traffic volumes. Secondary sources include <br />increased human activity throughout the sites. Noise limits for sensitive uses established in <br />Section 18-311 and 18-312 of the Santa Ana Municipal Code. <br />Development of projects under the Overlay Zone would require the use of heavy equipment for <br />demolition, site excavation, installation of utilities, site grading, paving, and building fabrication. <br />Construction activities would also involve the use of smaller power tools, generators, and other <br />sources of noise. During each stage of construction there would be a different mix of equipment <br />operating, and noise levels would vary based on the amount of equipment in operation and the <br />location of the activity. <br />Cabrillo Town Center City of Santa Ana <br />Technical Memorandum August 2023 <br />City Council 18 — 597 10/3/2023 <br />