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 construction associated with the same main entrance drive and parking modifications, and one of the project structures, 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. 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 and 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 in duration. Existing residences at Buildings A and B would be located 40 feet from construction activities associated with the 8 -story tower and subterranean parking, which would likely require use of a pile driver. At a distance of 40 feet, the noise levels at the residences from pile driver use would be 104 dB. In addition, worshipers at the Community Bible Church would be located 65 feet from construction activities associated with the 8 -story tower and subterranean parking. At a distance of 65 feet, the noise levels at the Community Bible Church from pile driver use would be 100 dB. According to Table 4.5 -1, these noise levels would be considered very annoying and would cause hearing damage at sustained exposure levels. With the implementation of the noise attenuation measures in Mitigation Measures N -land N -2, construction noise would be reduced. With mitigation, the construction noise at the single - family homes east of Memory Lane would be reduced to below the normally compatible standard of 65 dBA CNEL for residential uses as shown in Table 4.5 -5. However, for the remaining identified sensitive receptors, construction noise would remain above the normally compatible standard of 65 dBA CNEL for residential uses. For Buildings A and C, a noise level of 116 would remain very annoying and would cause maximum vocal effect and physical discomfort. The implementation of the noise attenuation measures in Mitigation Measures N -1 and N -2 would reduce noise levels. Also, there are no standards for construction noise. Therefore, impacts are considered to be less than significant. Long -Term Noise The ongoing operation of the proposed project would be affected by long -term ambient noise sources. Potential noise impacts associated with the operations of the proposed project are the result of project - generated vehicular traffic on project - vicinity roadways, along with community noise potentially impacting the project site. Based on the nature of the nearby roadways and the relatively low noise levels at the nearby community facilities, these noise sources would not expose persons to or generate noise levels in excess of standards. Michael Brandman Associates 4.5 -11 H\Cl t(PN -Rn) 327b32]003MMVB2]0030 Sec0 Noi�.doc