PC-2025-16 - Laserfiche WebLink

Hana Japan Restaurant Project Initial Study/Mitigated Negative Declaration 63 May 2025 volumes and, subsequently, noise levels, would not be generated on local roadways as a result of the proposed project. In addition, additional traffic would not occur during peak hours. Noise sources associated with operation of the proposed project could include parking lot movements, delivery truck circulation, and delivery activities. However, the proposed project would be consistent with the project site’s current land use and zoning designations. Therefore, operational noise level increases associated with commercial uses on the site have been previously anticipated by the City. In addition, the proposed restaurant building would be located between the parking lot and single-family residence, thereby blocking exterior on-site noise. As such, the proposed project would not be anticipated to substantially increase noise in the project vicinity. Based on the above, the proposed project would not result in operational noise increases that would result in significant effects on sensitive receptors in the project vicinity. Conclusion Based on the above, construction and operation of the proposed project would not result in the generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the City’s General Plan and Municipal Code. Thus, a less-than-significant impact would occur. b. Similar to noise, vibration involves a source, a transmission path, and a receiver. However, noise is generally considered to be pressure waves transmitted through air, whereas vibration usually consists of the excitation of a structure or surface. As with noise, vibration consists of an amplitude and frequency. A person’s perception to the vibration depends on their individual sensitivity to vibration, as well as the amplitude and frequency of the source and the response of the system which is vibrating. Vibration is measured in terms of acceleration, velocity, or displacement. A common practice is to monitor vibration in terms of peak particle velocities (PPV) in inches per second (in/sec). Standards pertaining to perception, as well as damage to structures, have been developed for vibration levels defined in terms of PPV. Human and structural response to different vibration levels is influenced by a number of factors, including ground type, distance between source and receptor, duration, and the number of perceived vibration events. Table 8, which was developed by Caltrans, shows the vibration levels that would normally be required to result in damage to structures. As shown in the table, the threshold for architectural damage to structures is 0.20 in/sec PPV and continuous vibrations of 0.10 in/sec PPV, or greater, would likely cause annoyance to sensitive receptors. The proposed project would only cause elevated vibration levels during construction, as the proposed project would not involve any uses or operations that would generate substantial groundborne vibration. Although noise and vibration associated with the construction phase of the project would add to the noise environment in the immediate project vicinity, construction activities would be temporary in nature and are anticipated to occur during normal daytime working hours, consistent with Section 9.04.100 of the City’s Municipal Code.