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Potentially • Significant Potentially Unless Less than Significant Mitigation Significant • impact Incorporated impact No Impact c. A substantial permanent increase in ambient noise levels in the project • X vicinity above levels existing without the project? • d. A substantial temporary or periodic Increase In ambient noise levels In the X • project vicinity above levels existing without the project? e. For a project located within an airport land use plan or where such a plan X • has not been adopted,within two 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? • f. For a project within the vicinity of a private airstrip,would the project X • • expose people residing or working in the project area to excessive noise - levels? Comments: ' a-d: Existing ambient noise in the vicinity of the project site is predominantly due to proximity to the BART Station, motor vehicle traffic along San Leandro Boulevard, and noise from SPRR operations. After project buildout, the noise environment will be dominated by BART operations on the east facade of the proposed structures, by SPRR operations on the west facade and by a combination of both on the north and south facades. Aircraft-related noise•is low and infrequent,with only occasional civil aircraft operations being audible for brief periods. As described below in Section XV, Transportation/Traffic, implementation of the proposed project would result in a direct and indirect increase in employees and visitors to the project site over current conditions. The increased activity levels at the project site, In addition.to traffic and operation of the proposed project, have the potential to increase noise levels in the vicinity of the project. This potential increase could impact both existing sensitive receptors, as well as new potential residents within the project area. Accordingly, the effects of noise and vibration could have a potentially significant impact. Mitigation Measure #15: All commercial construction shall comply with the City's existing building codes related to sound attenuation. Mitigation Measure #16: All construction activity shall comply with the City's Noise Ordinance (Municipal Code Chapter 4-1, Section 11) so as not to make or cause disturbing, excessive or offensive noise which causes annoyance or discomfort to persons. Implementation of Mitigation Measures #15 and 16 will reduce potential impacts to a less than significant level. • e-f: The proposed project is not located within the vicinity of a public airport or private airstrip. Oakland International Airport is located approximately 2.1 miles northwest of the project site. The project site is slightly outside the airport's general referral area and well outside the designated noise zone. XIII. POPULATION AND HOUSING. Would the project: a. Induce substantial population growth in an area either directly(for example, X by proposing new homes and businesses or Indirectly(for example, through extension of roads or other infrastructure)? b. Displace substantial numbers of existing housing,necessitating the X construction of replacement housing elsewhere? c. Displace substantial numbers of people, necessitating the construction of replacement housing elsewhere? X • • • 21