2024-072 - Setting Adminstrative Fines for Violation the Municipal Code

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maintain. construction noise levels at or below the performance standard of 80 dBA L,s. Barriers shall be constructed with a solid material that has a density of at least 4 pounds per square foot with no gaps from the ground to the top of the barrier. N-2 Prior to issuance of a building permit for a project requiring pile driving during construction within 135 feet of fragile structures, such as historical resources, 100 feet of non -engineered timber and masonry buildings (e.g., most residential buildings), or within 75 feet of engineered concrete and masonry (no plaster); or a vibratory roller within 25 feet of any structure, the project applicant shall prepare a noise and vibration analysis to assess and mitigate potential noise and vibration impacts related to these activities. This noise and vibration analysis shall be conducted by a qualified and experienced acoustical consultant or engineer. The vibration levels shall not exceed Federal Transit Administration (FTA) architectural damage thresholds (e.g,, 0.12 inches per second [in/sec] peak particle velocity [PPV] for fragile or historical resources, 0.2 in/sec PPV for non -engineered timber and masonry buildings, and 0.3 in/sec PPV for engineered concrete and masonry). If vibration levels would exceed this threshold, alternative uses such as drilling piles as opposed to pile driving and static rollers as opposed to vibratory rollers shall be used. If necessary, construction vibration monitoring shall be conducted to ensure vibration thresholds are not exceeded. N-3 New residential projects (or other noise sensitive uses) located within 200 feet of existing railroad lines shall be required to conduct a groundborne vibration and noise evaluation consistent with Federal Transit Administration (FTA) approved methodologies. N-4 During the project -level California Environmental Quality Act (CEQA) process for industrial developments under the General Plan or other projects that could generate substantial vibration levels near sensitive uses, a noise and vibration analysis shall be conducted to assess and mitigate potential noise and vibration impacts related to the operations of that individual development. This noise and vibration analysis shall be conducted by a qualified and experienced acoustical consultant or engineer and shall follow the latest CEQA guidelines, practices, and precedents. Analysis of the Modified Project The Modified Project would expressly prohibit STRs and only affect existing structures. No development, redevelopment, or changes to existing development types in the city are required to implement the Modified Project. No impacts related to construction -related noise level increases would occur. As with the Approved Project, the Modified Project would comply with RR NOI-3, which requires stationary noise sources to comply with the standards established in Section 18.312 of the SAMC. The Modified Project is not anticipated to result in an increase in transportation noise. Operational noise Ievels associated with long-term rentals or permanent residences would be consistent with the operational noise levels analyzed in the GP EIR for residential uses. The Modified Project would not place new residential development within the 60 dBA CNEL contour for John Wayne Airport. The Modified Project would not change the significance conclusions identified in the GP EIR. No impacts would occur. The Modified Project would not result in any new or more severe significant impacts than those identified in the GP EIR. Resolution No. 2024-072 Page 51 of 67