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City of Santa Ana California Environmental Quality Act <br />Initial Study/Mitigated Negative Declaration <br /> <br />- 31 - <br />3.13 Noise <br /> <br />Would the project: <br />Environmental Issue <br />Potentially <br />Significant <br />Impact <br />Less Than <br />Significant <br />with <br />Mitigation <br />Incorporated <br />Less Than <br />Significant <br />Impact <br />No <br />Impact <br />a) Generation of a substantial temporary or <br />permanent increase in ambient noise levels in the <br />vicinity of the project in excess of standards <br />established in the local general plan or noise <br />ordinance, or applicable standards of other <br />agencies? <br /> X <br />b) Generation of excessive groundborne vibration or <br />groundborne noise levels? X <br />c) For a project located within the vicinity of a <br />private airstrip or an airport land use plan or, where <br />such a plan has not been adopted, within two miles <br />of a public airport or public use airport, would the <br />project expose people residing or working in the <br />project area to excessive noise levels? <br /> X <br /> <br />Discussion: <br /> <br />a) The Project is primarily located within Residential and Commercial zoned properties. The schools most <br />likely to be impacted by construction noise are Raymond A. Villa Fundamental Intermediate School and <br />Saint Jeanne De Lestonnac School. Construction occurring in public right-of-way on Zoo Lane and <br />East Main Street will be within 50 feet of Residential dwellings. <br /> <br />Because implementation of the Project may result in the generation of construction noise within the <br />areas surrounding the Project during construction and Project operations, a Noise Assessment was <br />performed on January 16, 2025. To identify baseline noise conditions, short-term ambient noise level <br />measurements at the Project and at nearby representative sensitive receptors were recorded utilizing <br />sound level meters, as shown in Figure 3-1. The ambient noise level measurements were taken <br />during day-time hours, or when construction would typically occur. Table 3-1 shows the results of <br />the noise assessment, identifying minimum, average, and maximum A-weighted decibels (dBA) at <br />nearby sensitive, residential, and educational land uses. <br />  <br />  <br />City Council 15 – 84 12/2/2025