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96 Prior EIR Determination Effect Peculiar to Project Site? New Significant Effect? New Significant Off- Site, Cumulative Impact? New Information, More Severe Adverse Impact? DTPP EIR DTPP Plan- Wide Amendments SEIR Focused GPU EIR XIII. NOISE – Would the project result in: a) 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 local general plan or noise ordinance, or applicable standards of other agencies? LTS with Mitigation LTS with Mitigation LTS No No No No b) Generation of excessive groundborne vibration or groundborne noise levels? LTS with Mitigation LTS with Mitigation LTS with Mitigation No No No No c) For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a plan 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? LTS LTS LTS No No No No Documentation: 1900 Broadway Component: a. Noise in Redwood City is regulated by the City’s Noise Ordinance (Chapter 24 of the Municipal Code). In addition, the Noise Element of the City’s General Plan enumerates noise policies. More specifically, excessive and unreasonable noise levels are defined as noise levels generated by construction activities, including demolition, alteration, repair or remodeling of existing structures, and construction of new structures, on property within the City, at more than 110 decibels (dB) measured at any point within a residential district of the City and outside of the plane of the property. Therefore, construction noise is required to be less than 110 dB within residential districts or within 500 feet of a residential district in the City, and no construction noise is permitted between the hours of 8:00 PM and 7:00 AM the following day. The General Plan requires all exterior noise sources (e.g., construction operations, air compressors, pumps, fans, and leaf blowers) to use available noise suppression devices and techniques to bring exterior noise down to acceptable levels compatible with adjacent land uses. The primary sources of noise from the project component would be temporary construction noise and ongoing operational noise. Construction noise is largely a function of the construction equipment used, the location and sensitivity of nearby land uses, and the timing and duration of the noise-generating activities. Construction noise levels would vary depending on construction phase, equipment type and duration of use, distance between the noise source and receptor, and presence or absence of barriers between the noise source and receptor. The DTPP program EIR (p. 11-20) concluded that new DTPP developments could be exposed to noise levels exceeding City guidelines and State Title 24 standards, resulting in a potentially significant impact. Mitigation 11-1 states that a noise study consistent with the requirements of the California Building Code (CBC) shall be conducted for new multi-family residential projects, and noise reduction measures necessary to achieve compatibility with the City’s Noise Element guidelines. In addition, the DTPP program EIR (p. 11-29) concluded that noise levels from DTPP development would increase primarily due to new traffic patterns, new commercial development next to or below residential development, and site-specific sources such as mechanical equipment. Traffic noise increases resulting from DTPP development are projected to be from less than 1 dB to up to 2 dB; these increases are considered less than significant because they are imperceptible to the average human ear within the existing Downtown environment. (DTPP EIR pp. 11-19, 11-29, and 11-30) Other sources of noise (e.g., commercial operations, mechanical equipment) are subject to the City of Redwood City Noise Ordinance regulations. Construction and operational noise and vibration impacts were found to be less than significant after mitigation in the form of studies and conditions of approval. ATTY/RESO.0074/CC RESO 847 WOODSIDE (CEQA) - EXHIBIT 1 - CEQA CONSISTENCY CHECKLIST REV: 10-23-24 VR Page 96 of 135