Planning Commission meeting agenda packet 7-9-25

Page 9 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: o The project applicant shall utilize quieter mechanical systems that would not result in an exceedance of the City’s operational noise standards. o 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. o 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. • MM NOI-2: Construction Vibration Reduction Plan For any future development projects that would use pile-driving within 200 feet of an off-site structure, prior to the issuance of grading permits for a project, the project sponsor shall retain a Noise Specialist to prepare a Construction Vibration Reduction Plan for submittal to the City’s Planning Director for review and approval that identifies specific techniques, such as the depth and location of temporary trenching, that would reduce potential vibration impacts to less than significant for any impacted structures. Upon approval by the City, the construction vibration reduction measures shall be incorporated into the construction documents. A note shall be provided on grading and building plans indicating that, during grading and construction, the property owner/developer shall be responsible for requiring contractors, to be monitored via on-site inspection by the Community Development Department, to implement these measures to limit construction-related vibration impacts. For any future development projects that would necessitate the use of large vibratory rollers within 30 feet of an off-site structure, or the use of heavy construction equipment (i.e., construction equipment with a PPV at 25 feet [inches per second] rating of 0.051 or greater as shown in Table 3.11-3 in Section 3.11, Noise, in this Program EIR) within 15 feet of an off-site structure, the project sponsor shall retain a Noise Specialist to prepare a Construction Vibration Reduction Plan for submittal to the City’s Director of Community Development for review and approval that identifies specific techniques, such as the depth and location of temporary trenching, that would reduce potential vibration impacts to less than significant for any impacted structures. Upon approval by the City, the construction vibration reduction measures shall be incorporated into the construction documents. A note shall be provided on grading and building plans indicating that, during grading and construction, the property owner/developer shall be responsible for requiring contractors, to be monitored via on-site inspection by the Community Development Department, to implement these measures to limit