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4 NO ENVIRONMENTAL EFFECTS AND LESS THAN SIGNIFICANT <br />ENVIRONMENTAL EFFECTS WITHOUT MITIGATION MEASURES <br />4.13 NOISE <br />Threshold N-2: The Project would not result in generation of excessive groundborne <br />vibration or aroundborne noise levels. <br />Findings: The City finds that the Project would result in less -than -significant impacts to noise <br />related to generation of excessive groundborne vibration. (Draft Supplemental EIR, <br />pp. 4.9-32 — 4.9-35.) <br />Explanation of the Rationale: Project construction can generate varying degrees of <br />groundborne vibration, depending on the construction procedure and the construction equipment <br />used. The ground -borne vibration generated during construction activities would primarily impact <br />existing sensitive uses that are located adjacent to or within the immediate vicinity of individual <br />projects. The Project may potentially use pile drivers during construction and the nearest <br />residences are multi -family residences approximately 75 feet from the Project site, resulting in <br />vibration levels ranging from approximately 0.0006 inch/second PPV to approximately 0.1239 <br />inch/second PPV at 75 feet. As a result, construction groundborne vibration would not be capable <br />of exceeding the 0.2 inch -per -second PPV significance threshold for human annoyance or <br />building damage at the nearest sensitive receptor. Therefore, vibration impacts would be less <br />than significant impact during construction. <br />Implementation of the Project would not involve land uses that include or require equipment, <br />facilities, or activities that would result in perceptible groundborne vibration. Heavy duty trucks <br />would occasionally travel through the surrounding roadways; however, it is unusual for vibration <br />from sources, such as buses and trucks, to be perceptible, even in locations close to major roads. <br />As such, it can be reasonably inferred that operation of the Project would not create perceptible <br />vibration impacts to the nearest sensitive receptors. Therefore, vibration impacts related to human <br />annoyance and building damage during operation would be less than significant. (Draft <br />Supplemental EIR, pp. 4.9-32 — 4.9-35.) <br />Threshold N-3: The Project would not expose people residing or working in the project area <br />located within two miles of a public airport or public use airport to excessive <br />noise levels. <br />Findings: The City finds that the Project would result in less -than -significant impacts to noise <br />related to exposing people residing or working in the project area located within two miles of a <br />public airport or public use airport to excessive noise levels. (Draft Supplemental EIR, <br />pp. 4.9-35 — 4.9-36.) <br />Explanation of the Rationale: The nearest airport is John Wayne Airport (SNA) located <br />approximately 1.5 miles southeast of the Project site. The Project site is located within the Airport <br />Environs Land Use Plan for John Wayne Airport (SNA) and the Federal Aviation Regulations Part <br />77 Notification Area, but outside of the General Aviation Runway Safety Zones. Future sensitive <br />uses proposed under the Project would be located outside of the 60 dBA CNEL noise contour of <br />SNA. Additionally, the project site is not located within the vicinity of a private airstrip or related <br />facilities. (Draft Supplemental EIR, p. 4.9-36.) <br />City of Santa Ana The Village Santa Ana Specific Plan Project <br />August 2025 CEQA Findings of Fact and Statement of Overriding Considerations <br />4-28 <br />