2025-041 - Certifing Final Supplemental Enviromental Impact for The Village

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4.13 NOISE Threshold N 2: The Project would not result in generation of excessive groundborne vibration or groundborne noise levels. Findings: The City finds that the Project would result in less-than-significant impacts to noise related to generation of excessive groundborne vibration. (Draft Supplemental EIR, pp. 4.9-32 —4.9-35.) Explanation of the Rationale: Project construction can generate varying degrees of groundborne vibration, depending on the construction procedure and the construction equipment used. The ground-borne vibration generated during construction activities would primarily impact existing sensitive uses that are located adjacent to or within the immediate vicinity of individual projects. The Project may potentially use pile drivers during construction and the nearest residences are multi-family residences approximately 75 feet from the Project site, resulting in vibration levels ranging from approximately 0.0006 inch/second PPV to approximately 0.1239 inch/second PPV at 75 feet. As a result, construction groundborne vibration would not be capable of exceeding the 0.2 inch-per-second PPV significance threshold for human annoyance or building damage at the nearest sensitive receptor. Therefore, vibration impacts would be less than significant impact during construction. Implementation of the Project would not involve land uses that include or require equipment, facilities, or activities that would result in perceptible groundborne vibration. Heavy duty trucks would occasionally travel through the surrounding roadways; however, it is unusual for vibration from sources, such as buses and trucks, to be perceptible, even in locations close to major roads. As such, it can be reasonably inferred that operation of the Project would not create perceptible vibration impacts to the nearest sensitive receptors. Therefore, vibration impacts related to human annoyance and building damage during operation would be less than significant. (Draft Supplemental EIR, pp. 4.9-32—4.9-35) Threshold N-3: The Project would not expose people residing orworking in the project area located within two miles of a public airport or public use airport to excessive noise levels. Findings: The City finds that the Project would result in less--than-significant impacts to noise related to exposing people residing or working in the project area located within two miles of a public airport or public use airport to excessive noise levels. (Draft Supplemental EIR, pp. 4.9-35—4.9-36.) Explanation of the Rationale: The nearest airport is John Wayne Airport (SNA) located approximately 1.5 miles southeast of the Project site. The Project site is located within the Airport Environs Land Use Plan for John Wayne Airport(SNA) and the Federal Aviation Regulations Part 77 Notification Area, but outside of the General Aviation Runway Safety Zones. Future sensitive uses proposed under the Project would be located outside of the 60 dBA CNEL noise contour of SNA. Additionally, the project site is not located within the vicinity of a private airstrip or related facilities. (Draft Supplemental EIR, p. 4.9-36.) Resolution No. 2025-041 Page 48 of 140