2014-028 - Approving General Plan Amendement No. 2014-01

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City of Santa Ana -Park View at Town and Country Manor Draft EIR Noise The existing residences at Buildings A and C of Town and Country Manor would be located adjacent to construction associated with one of the project structures. At a distance of 1 foot (the distance used to calculate the noise level at Building A), the noise level at the residences would be 122 dB. According to Table 4.5 -1, regular exposure to this noise level over one minute risks permanent hearing loss. The existing residences at Building B of Town and Country Manor would be located 15 feet from construction associated with the same project structure, resulting in a noise level at the residences of 100 dB, which would be considered very annoying and would cause hearing damage at sustained exposure levels. Existing residences of Buildings A and B would be located 40 feet from the proposed 8 -foot tower and subterranean parking and would be exposed to noise levels of 104 dB from pile driver use. Worshipers at the Community Bible Church would be located 65 feet from the proposed 8 -foot tower and subterranean parking and would be exposed to noise levels of 100 dB resulting from pile driver use. According to Table 4.5 -1, these noise levels would be considered very annoying and would cause hearing damage at sustained exposure levels. The existing residences at Buildings A, B, C, D, E, and G of Town and Country Manor would be located less than 10 feet from construction associated with the proposed parking lots to the east or south. At a distance of 10 feet, the noise level at the residences would be 104 dB. According to Table 4.5 -1 this noise level would be considered very annoying and would cause hearing damage at sustained exposure levels. Construction associated with the proposed parking lots would be of short duration. Therefore, while the noise levels experienced at Buildings B, D, E, and G associated with the parking lots would be significant at a level of 104 dB, and noise levels experienced at Buildings A and C would be 122 dB, these noise levels would be very short lived. In order to minimize disruption to existing residents, all construction activity would be performed in accordance with the Santa Ana Municipal Code Noise requirements. Additionally, mitigation is provided that would require noise attenuation measures to be incorporated into the proposed project. Table 4.5 -19 and Table 4.5 -20 show the noise levels from construction after the application of mitigation measures that can be quantified, including distance requirements for construction activity and staging, and the use of portable acoustic barriers. Michael Brandman Associates 4.5 -29 H\Cl t(PN -Rn) 327b32]003MMVB2]0030 Sec0 Noi�.doc