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City of Pleasanton 2023-2031 (6th Cycle) Housing Element Update CEQA Findings of Fact and Statement of Overriding Considerations FirstCarbon Solutions 107 Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480022/FOF/21480022 Pleasanton Housing Element FOF.docx established in the local general plan or noise ordinance, or applicable standards of other agencies (Draft Program EIR, Page 3.11-19). Findings: Less than significant impact with mitigation incorporated. (Draft Program EIR, Page 3.11-25). Changes or alterations have been required in, or incorporated into, the Housing Element Update which avoid or substantially lessen the significant environmental effects as identified in the Program EIR. (State CEQA Guidelines, § 15091(a)(1)) Mitigation Measures MM NOI-1 Stationary Source Noise Impact Reduction Measure Prior to issuance of building permits for a project, for any development project on potential sites for housing that would include any noise producing mechanical systems located within 25 feet of a property line, the project applicant shall retain a Noise Specialist to conduct a site-specific project-level noise analysis to evaluate compliance with Section 9.04.030 of the Municipal Code, which prohibits noise levels in excess of 60 A-weighted decibel (dBA) at any point outside the property plane, as defined in Section 9.04.020 of the Municipal Code as “a vertical plane including the property line which determines the property boundaries in space”. If the analysis identifies that proposed mechanical system operations could result in an exceedance of this noise performance standard, then specific measures to attenuate the noise impact shall be outlined in the analysis. The analysis shall be submitted to the City’s Building & Safety Division for review and approval prior to issuance of building permits. The final noise-reduction measures shall be included on all final construction and building documents and/or construction management plans and submitted for verification to the City. Specific measures may include, but are not limited to, the following measures or design features: • The project applicant shall utilize quieter mechanical systems that would not result in an exceedance of the City’s operational noise standards. • The project applicant shall enclose mechanical systems in a sound-attenuating structure or shall install sound barriers adjacent to the proposed system that would reduce operational noise levels to not exceed the City’s noise performance standards as measured at the property line. • The project application shall relocate the proposed mechanical system further from property line to reduce operational noise levels to not exceed the City’s noise performance standards as measured at the property line. Facts in Support of Findings: Short-term Construction Impacts: Because Sites 1 (Lester) and 22 (Merritt) would be annexed into the City prior to development, potential noise impacts for those sites were evaluated against the City’s thresholds. For future development projects, two types of short-term noise impacts would occur during site preparation and project construction. The first type would result from the increase in traffic flow on local streets, associated with the transport of workers, equipment, and materials to and from the project site. The transport of workers and