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City of Pleasanton—Villages at the Quarry Project <br />Consistency Checklist 15183 Consistency Checklist <br /> <br /> <br />170 <br />Mechanical Equipment Operations <br />The Housing Element Update FEIR indicated that a significant impact would <br />occur if project-related, noise-producing construction activities exceed the <br />City’s Municipal Code’s established noise performance standards. The City <br />has established operational noise performance standards for residential <br />properties in Section 9.04.030 of the Municipal Code which prohibits noise <br />levels in excess of 60 dBA at any point outside the property plan, unless <br />otherwise provided in the Municipal Code. For example, Section 9.04.070 <br />provides a daytime exception that any noise which does not produce a <br />noise level exceeding 70 dBA at a distance of 25 feet under its most noisy <br />condition of use shall be exempt from the provisions of Sections 9.04.030 <br />between the hours of 8:00 a.m. and 8:00 p.m. daily, except Sundays and <br />holidays, when the exemption herein shall apply between 10:00 a.m. and <br />6:00 p.m. <br />Typical operational noise level ratings for residential-grade mechanical <br />ventilation equipment range up to approximately 70 dBA Leq at a distance of <br />approximately 3 feet. Proposed mechanical ventilation systems would be <br />located approximately 160 feet from the nearest residential property line <br />(future approved residences located north of the project site across Busch <br />Road). At this distance, and assuming no shielding reduction for residential <br />fences, noise generated by proposed mechanical ventilation equipment <br />would attenuate to below 23 dBA Leq at the nearest residential property line. <br />The calculation sheet is provided in Appendix H. <br />Project-related mechanical ventilation equipment operational noise levels <br />would not exceed 60 dBA at the adjoining residential property boundary <br />plane. In addition, these noise levels would not exceed the documented <br />existing background ambient noise levels, and the impact would be less than <br />significant. <br />Therefore, there are no environmental effects that are peculiar to the <br />proposed project. The proposed project would not result in a new or more <br />severe adverse impact that was not previously identified in the Housing <br />Element Update FEIR. Approval of the proposed project would not result in <br />any significant effects relating to project-related stationary noise and the <br />proposed project would meet the criteria of CEQA Guidelines Section <br />15332(c).