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CEQA Class 32 Exemption – 400 W Warner Ave April 7, 2025 Page 6 of 10 Noise The Project’s Noise Assessment is presented as Attachment D to this Memorandum. According to Section 18- 314(e) of the city’s Municipal Code, noise sources associated with the construction, repair, remodeling, or grading of any real property, provided said activities do not take place between the hours of 8:00 p.m. and 7:00 a.m. on weekdays, including Saturday, or any time on Sunday or a federal holiday are exempt from the noise ordinance. To evaluate whether the Project will generate potentially significant short-term noise levels at nearest receiver locations, a construction-related daytime noise level threshold of 80 dBA Leq is used as a reasonable threshold to assess the daytime construction noise level impacts. As presented in Table 7 of the Noise Assessment, construction noise analysis shows that the nearest receiver locations will satisfy the reasonable daytime 80 dBA Leq significance threshold during Project construction activities. As such, construction noise is considered less than significant at all receiver locations. Construction activity can result in varying degrees of ground vibration, depending on the equipment and methods employed. As shown in Table 9 of the Noise Assessment, based on the maximum acceptable continuous vibration threshold of 0.30 PPV (in/sec), typical Project construction vibration levels will fall below the thresholds at all the noise-sensitive receiver locations. Therefore, the Project’s construction-related vibration impacts are considered less than significant. The Project-related exterior noise sources are expected to include roof-top air conditioning units, trash enclosure activity, and parking lot vehicle movements. To demonstrate compliance with local noise regulations, the Project- only operational noise levels were evaluated against exterior noise level thresholds based on the City of Santa Ana exterior noise level standards at nearby noise-sensitive receiver locations. As shown in Table 4 of the Noise Assessment, operational noise levels associated with the Project will not exceed the City of Santa Ana 55 dBA Leq daytime or the 50 dBA Leq nighttime exterior noise level standards. Therefore, the stationary operational noise impacts are considered less than significant at the nearby noise-sensitive receiver locations. Based on the traffic counts for Warner Avenue and Birch Street, Warner Avenue has an AM peak hour traffic volume of 2,073 and a P.M. peak-hour traffic volume of 2,293. The additional project related traffic would result in a less than 1 dBA CNEL increase in traffic noise along Warner Avenue. Therefore, land uses adjacent to the study area roadway segments would experience less than significant noise level impacts due to the Project-related traffic noise levels. Utilities and Public Services The Project site is currently served by existing utilities and public services. The Project includes the retrofitting of an existing industrial warehouse building into a soccer training facility and consists of interior and exterior architectural renovations, including mechanical, electrical, and plumbing improvements. The Project would implement all necessary on-site utility and storm water management infrastructure, consistent with City requirements. Therefore, the site can be adequately served by all required utilities and public services. B. Review Of Exceptions to The Categorical Exemption CEQA Guidelines include exceptions to all exemptions. As codified in Guidelines Section 15300.2, a project that would otherwise fit into an exemption must not be disqualified by the following sections: