75A - PH 3321 SOUTH FAIRVIEW ST - Laserfiche WebLink

Home Browse Search

i~ i~ i~ J r r i n n L Environmental Checklist For CEQA Compliance N-13. The noise barriers at the intersection of Alton Avenue and South Fairview Avenue will be no less than 6.8 feet tall. N-14. The noise barriers along South Fairview Street will be no less than 6.8 feet tall. N-15. Prior to final plan check approval of the residential structures, detailed engineering calculations will be completed for building attenuation requirements greater than 20 dBA. In order to meet the 45 CNEL interior standard, building upgrades will be required for units along Fairview Street and Alton Avenue. After draft final building plans have been prepared but prior to final building plan approval, an acoustical analysis of the proposed residences will be prepared by a qualified acoustical analyst to ensure that the building assemblies would provide the required exterior-to-interior noise attenuation (i.e., a minimum of 26 dBA for rooms facing Fairview Street and 20 dBA for rooms facing Alton Avenue). Final architectural plans will demonstrate that the structural integrity will reduce interior noise levels 45 CNEL at these future residences. These reductions will be verified during plan check as part of the Building Department review of the project plans. N-16. All units along South Fairview Street and Alton Avenue will be provided with adequate mechanical ventilation to allow windows to remain closed so that homes will not experience greater indoor noise. B. Less Than Significant Impact. The proposed project includes the construction of 38 single- family residential units. Construction would not involve any pile driving or specific activities designed to generate groundborne vibrations. General construction may produce some groundborne vibration; however, Mitigation Measures N-1 through N-10 (identified above) are recommended to minimize noise generated during the construction phase of the project. C. Less Than Significant Impact. Potential long-term offsite noise would primarily be generated by onsite traffic. Since the proposed project is not anticipated to generate a significant amount of traffic, the project would not generate significant noise impacts on surrounding land uses (Mestre Greve Associates 2007:11). D. Less Than Significant Impact. Short-term noise impacts are impacts typically associated with site preparation, excavation, grading, and construction of structures. Local sensitive land uses include the residential units that are located on the east side of the proposed project. The municipal code recognizes that some forms of noise are required for urban development and maintenance that are difficult to control. Section 18-314(c) exempts noise sources associated with construction, repair, remodeling, or grading of any real property, provided said activities do not take place between the hours of 8:00 p.m. and 7:00 a.m. on weekdays, including Saturday, or any time on Sunday or a federal holiday. Compliance with the code is requisite and as such, is not considered as mitigation under CEQA. Furthermore, Mitigation Measures N-1 through N-10 would reduce the short-term, temporary construction impacts to less-than-significant levels. E. Less Than Significant Impact. The project site is located approximately 3 miles northwest of John Wayne International Airport. The project is located to the west of the established flight path and is beyond the airport's 60 dBA CNEL noise contour (Airport Land Use Alton Court August 2007 Initial Study/Mitigated Negative Declaration 3-35 J&S 00635.07 75A-101