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P11-0824(Downtown Hospitality Guidelines),P12-0798(Pleasanton Municipal Code Amendments) Initial Study and Negative Declaration level increased from 70 to 74 dBA in the Downtown Central Core Area, the noise level at the closest residentially-zoned property line would be approximately 60.6 dBA. If the allowable noise level in the Downtown Transition Area remained 70 dBA, the noise level at the closest residentially-zoned property' across Peters Avenue would be about 59.4 dBA. Furthermore, according to the City's General Plan, an increase in exterior noise of more than 4 dBA is required before the increase is considered significant. In summary, noise levels would not be expected to significantly exceed the standards already in place. Therefore, implementation of the proposed standards would be of less than significant impact. b. Music is conveyed to listeners through very small fluctuations in air pressure. These fluctuations are perceived by the human hearing mechanism as sound. These small pressure fluctuations lack adequate energy to cause feelable groundborne vibrations. Groundbome vibration is more commonly caused by heavy vehicles on roadways or tracks (trucks and trains) or large machinery such as pile drivers or compactors6. This would be of a less than significant impact. c. See impact discussion in section a (above) for discussion of increase in noise. In summary, noise due to implementation of the proposed standards would not be expected to increase noise levels to a significant degree. This would be of a less than significant impact. e-f. The Downtown Specific Plan Area is not within the Airport Influence Area (otherwise known as the General Referral Area) of Alameda County's Airport Land Use Compatibility Plan (ALUCP). A revised ALUCP was adopted by Alameda County on July 18, 2012. The proposed City wide PMC amendment only applies to when restaurants serving alcohol must apply for a Conditional Use Permit as described in the Project Description above (Section 2). Changes in where restaurants may locate are not proposed. Increases in occupancy above Code, such as the Fire Code, are not proposed. These types of events and commercial land uses were addressed in the Pleasanton General Plan and its corresponding EIR. The Pleasanton General Plan EIR required no mitigation/improvement measures for noise impacts and deemed noise impacts without mitigation as being less than significant. The Housing Element and CAP EIR listed a significant noise impact due to potential exposure of residents at the potential housing sites to aircraft noise. Mitigation included acoustical assessments and acoustical building or site mitigation prior to and during November Z 2012 42