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102 Code regulations and General Plan Program PS-61 through the incorporation of the recommended measures in the Environmental Noise and Vibration Study into the conditions of project component approval, with monitoring by appropriate City staff. Implementation of the Environmental Noise and Vibration Study’s recommended measures would render potential construction noise impacts less than significant and no additional mitigation would be required. The Focused GPU program EIR (p. 4.13-40) determined that “…stationary and other sources of noise would be controlled by the General Plan goals and policies, and the Municipal Code, which limit allowable noise levels at adjacent properties. Therefore, future stationary noise sources would comply with City standards and would not expose people to a substantial permanent increase in noise levels.” The proposed project would not result in a substantial permanent noise level increase at receptors in the project component vicinity. Project component design measures that may be used to prevent noise levels from exceeding City Municipal Code noise limits at adjacent residential land uses include selecting quieter equipment, rooftop parapet barriers, and exhaust duct silencers. Through compliance with City standards, including regulations contained within Municipal Code Chapter 24 (Noise Regulation), and General Plan Program PS-61, operational noise levels generated at the project component site (e.g., project traffic noise and mechanical equipment, including HVAC equipment) would not exceed applicable standards at the noise- sensitive receptors in the project vicinity (Coffman Engineers, pp. 15-16). These protocols would reduce the potential operational noise impacts of the project component to less than significant. No mitigation would be required. The Focused GPU program EIR evaluated construction and operational noise under similar distances and conditions presented by the 847 Woodside Road project component. For the reasons discussed here, the 847 Woodside Road project component would not create new impacts or increase impacts, and there is no new information of substantial importance for CEQA purposes. Recommended Noise Insulation Features to Reduce Future Interior Noise Levels (related informational item) The California Building Code (CBC) requires new residential units to meet an interior noise level of CNEL 45 dBA. According to the Environmental Noise and Vibration Study, the project component occupants would be exposed to an exterior noise level of CNEL 72 dBA (Coffman Engineers, p. 14). This noise exposure is considered “Normally Unacceptable” for residential land use according to the City’s Noise Guidelines for Land Use Planning. The proposed building will need to provide noise reduction of up to 27 dBA to meet the CBC and City’s interior noise level requirement. Specific measures needed to meet the interior noise level requirements will be determined by an acoustical analysis completed during the architectural design phase of the project component in compliance with the CBC and General Plan Program PS-61. Measures will likely include sound-rated windows along the adjacent roadways and a fresh air ventilation system so that the windows can be closed for noise control. According to the Environmental Noise and Vibration Study, sound-rated windows and a fresh air ventilation system are feasible measures that can be implemented to reduce exterior noise levels to meet the interior noise level requirements. b. The Focused GPU program EIR (p. 4.13-41) concluded that potentially significant temporary noise and vibration impacts could be generated by certain construction activities (e.g., pile drivers, other high-impact construction equipment) and also that the “need for such methods is usually determined through site-specific geotechnical investigations that identify the subsurface materials within the grading envelope, along with foundation design recommendations and the construction methods needed to safely permit development of a site.” As discussed above under item a), project component construction activities would not include pile driving. However, as also indicated in the Focused GPU program EIR (pp. 4.13- 41 and 4.13-42), other types of construction equipment could exceed the Federal Transit Administration’s vibration standard for infrequent events at residential sites, which at a distance of approximately 150 feet would be 80 VdB. The Focused GPU EIR found the impacts to be less than significant with mitigation. Mitigation Measure Noise-1 requires new projects near the railroad tracks to conduct a train ground vibration and noise evaluation. The 847 Woodside Road project component is not located near railroad tracks. The project component’ site-specific Environmental Noise & Vibration Study included an analysis of construction- period groundborne vibration. The Environmental Noise & Vibration Study determined (p. 22): “The closest building to the project site is the existing commercial building that is directly on the eastern property line which is 6 feet from the project building’s footprint. The calculated vibration level at this building would be below Caltrans’ threshold for potential building damage of 0.5 in/sec. Likewise, the other buildings near the project would be exposed to vibration level less than the damage threshold.” The Environmental Noise & Vibration Study recommended the project component minimize vibration impacts to adjacent uses during demolition and construction by using static rollers instead of vibratory rollers and using drilled piles instead of driven piles. The project component construction would not involve pile driving or vibratory rollers. Construction vibration would be distinctly perceptible, but temporary, at the nearest residences and therefore is consistent with the findings of the Focused GPU EIR (Coffman Engineers, p. 23). ATTY/RESO.0074/CC RESO 847 WOODSIDE (CEQA) - EXHIBIT 1 - CEQA CONSISTENCY CHECKLIST REV: 10-23-24 VR Page 102 of 135