2011-022 - Addendum to the FInal Environmental Impact Report No. 2004-02

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resources were identified and no changes have occurred. Therefore, the FEIR remains adequate and complete with respect to mineral resources. XII. Noise As detailed in the FEIR, construction operations would increase existing noise levels for the short term, and residential land uses would be subject to significant adverse long -term noise impacts. Mitigation measures were included in the FEIR to reduce noise impacts to a less than significant level. a) Would the project result in exposure of persons to or generation of noise levels in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies? (No Substantial Change from Previous Analysis) The FEIR identified short -term noise impacts from on -site demolition and construction activities. The primary source of construction noise is heavy equipment. The mitigation measures in the FEIR reduced potentially significant short -term construction noise impacts to a less than significant level. The FEIR identified long -term noise impacts as mobile source noise impacts from traffic, aircraft noise impacts from John Wayne Airport, and operational noise from the operation of the project components. The mitigation measures included in the FEIR will reduce potentially significant long -term noise impacts to a less than significant level. Development of the residential units will have no new or more severe impacts beyond those addressed in the FEIR. Therefore, the FEIR remains adequate and complete with respect to this topic. b) Would the project result in exposure of persons to or generation of excessive groundborne vibration or groundborne noise levels? (No Substantial Change from Previous Analysis) As detailed in the FEIR, the Noise Study concluded that construction will generate excessive ground- borne vibration or groundborne noise levels. However, because this will only occur during the construction phase of the project, this impact is not considered significant. Mitigation measures in the FEIR will be implemented to reduce groundborne vibration/noise levels. Development of the modified condominium component will have no new or more severe impacts beyond those addressed in the FEIR. Therefore, the FEIR remains adequate and complete with respect to this topic. c) Would the project result in a substantial permanent increase in ambient noise levels in the project vicinity above levels existing without the project? (No Substantial Change from Previous Analysis) Ambient noise levels due to project implementation will be comparable to what was previously analyzed in the FEIR. The City of Santa Ana has an adopted Noise Ordinance for exterior noise levels. The table below depicts the noise standards in the City's Municipal Code: City of Santa Ana Exterior Noise Ordinance Standards Noise Level That May Not Be Daytime Night Exceeded for More Than 7:00 a.m. —10:00 p.m. 10:00 pm. — 7:00 a.m. 30 minutes in any hour 55 dB(A) 50 dB(A) 15 minutes in any hour 60 dB(A) 55 dB(A) 5 minutes in any hour 65 dB(A) 60 dB(A) 1 minute in any hour 70 dB(A) 65 dB(A) Any time 75 dB(A) 70 dB(A) Source: Section 18 -312 of the City of Santa Ana Municipal Code Implementation of the mitigation measures identified in the FEIR and the previously approved Addendum will ensure that no new or more severe impacts beyond those addressed and mitigated in the FEIR will occur. Therefore, the FEIR remains complete and adequate as it relates to noise. MacArthur Place South EIR — 2011 Addendum 33