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4.6 – Noise <br />Draft Environmental Impact Report February 2021 <br />14800 W. Schulte Road Logistics Center 4.6-16 <br />Vibration during operation would be negligible. Any mechanical machinery that would generate groundborne <br />vibration of consequence would be mounted using springs or resilient fasteners, per standard construction and <br />installation practices, and would thus not transmit significant vibration levels into the structure and ultimately the <br />nearby ground. Therefore, operational vibration impacts would be less than significant. <br />Threshold D: Would the Project result in cumulatively considerable noise impacts? <br />Less-Than-Significant Impact. The Project would not result in the generation of cumulatively considerable <br />noise impacts. <br />Non-transportation noise sources (e.g., Project operation) and construction noise impacts are typically project- <br />specific and highly localized (i.e., these do not generally affect the community noise level at distances beyond <br />several hundred feet). Construction activities associated with proposed or future development within the area would <br />contribute to cumulative noise levels, but in a geographically limited and temporary manner. Furthermore, all <br />proposed or future projects would be required to adhere to applicable County and City of Tracy regulations regarding <br />construction and operational noise. As other development occurs in the area, noise from different types of uses <br />(e.g., traffic, aircraft, fixed noise sources) would continue to combine, albeit on a localized basis, to cause increases <br />in overall background noise conditions within the area. However, such sources do not significantly contribute to <br />cumulative noise impacts at distant locations, and so were not evaluated on a cumulative level. <br />The transportation analysis for the Project considered cumulative growth. As shown in Table 4.6-9, the Project’s <br />contribution to cumulative traffic-related noise impacts would not result in a significant noise level increase along <br />adjacent roadways. Therefore, impacts would not be cumulatively considerable and would be less than significant. <br />Table 4.6-9. Cumulative Traffic Noise <br />Modeled Receptor <br />Cumulative (dBA <br />CNEL/Ldn) <br />Cumulative with Project <br />(dBA CNEL/Ldn) <br />Difference <br />(dB) <br />ST1: West of Project site, adjacent to CAL FIRE <br />Station 26 at 16502 West Schulte Road <br />66 66 0 <br />ST2: West of Project site, adjacent to residence <br />at 25730 Hansen Road <br />55 55 0 <br />ST3: East of Project site, adjacent to residence at <br />25613 South Lammers Road <br />60 60 0 <br />ST4: East of Project site, adjacent to residence at <br />25700 South Lammers Road <br />59 59 0 <br />ST5: Northwest of Project site, adjacent to <br />residence at 24142 Hansen Road <br />64 64 0 <br />ST6: West of Project site, adjacent to residence <br />at 24365 Mountain House Parkway <br />62 62 0 <br />Source: Appendix E-3. <br />Notes: <br />dBA = A-weighted decibel; CNEL = community noise equivalent level; Ldn = day night average sound level; dB = decibel <br />4.6.5 Mitigation Measures <br />No mitigation measures are required.