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City of Santa Ana Environmental Checklist d. A substantial tempormy or periodic increase in ambient noise levels in the project vicinity above levels existing without the project? Less-than-Significant Impact with Mitigation Incorporated. As described in Xll.a, construction- related activities and equipment used during construction of the proposed project would result in a temporary or periodic increase in ambient noise levels above existing levels. The City's municipal code exempts construction related noise provided that it occurs between the hours of 7:00 a.m. to 8:00 p.m. on weekdays and Saturday. However, the short-term noise from construction would be loud at times at the nearby noise-sensitive land uses and could be disruptive. Therefore, Mitigation Measure N01-1, which implements noise control measures, is provided to reduce construction noise levels to a less-than-significant level. The proposed project could include new HVAC units and would include increased used of the project site during worship services, and new parking areas, which would produce periodic increases in noise at sensitive receivers surrounding the project site. The HVAC units would be acoustically engineered by the manufacturer to ensure that the City's noise standards would not be exceeded. Mitigation Measure N01-2 would also be included to reduce noise levels from HVAC noise and assure that impacts would be less than significant. The parking facilities will be located in a newly designed underground facility and around the backside of the proposed site. An existing wall which extends across all the north, east, and south side of the property will hinder the parking lot noise from traveling to the adjacent sensitive land uses. Increased use of the courtyard could potentially increase noise from worship services. However, these noise levels would be shielded by the wall surrounding the project site and would be comparable to or below the existing ambient noise level. Noise levels of this magnitude would not exceed any City standards. In addition, chanting and parking lot noise is short-term in duration. As a result, noise related to operations of HVAC systems, chanting, parking facilities is less than significant. e. For a project located within an airport land use land use plan or, where such a plan has not been adopted, within 2 miles of a public airport or public use airport, would the project expose people residing or working in the project area to excessive noise levels? No Impact. John Wayne Airport is located about 4 miles to the southeast of the project site (Google Earth 2012). The project site is not located within any airport land use plan and not within 2 miles of any public or private airport or airstrip. As a result, the proposed project site will not receive airport-related noises, and the project would not expose people residing or working within the project area to excessive noise levels. f. For a project within the vicinity of a private airstrip, would the project expose people residing or working In the project area to excessive noise levels? No Impact. The proposed project is not within the vicinity of a private airstrip. No impact would occur. The Oat Nha Buddhist Meditation Center June 2013 Initial Study/Millgated Negative Declaration 3-76 ICF 00215.12 31 C-130