6 - GPA19-01; AA19-01_651 W SUNFLOWER AVENUE

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Legacy Sunflower Apartments Page 78 Mitigated Negative Declaration – March 14, 2019 Table 18 Demolition Noise Levels Location Leq Lmax Playfields at school adjacent to the northern property line 88.8 92.1 Residential adjacent to the eastern property line 72.2 74.2 Residential property line 140 feet to the south 66 69 Residential property line 145 feet to the west 72.6 75.6 Residential property line 225 feet to the southwest 67.9 71 Grading The noise levels that would be generated to the adjacent land uses during project grading are shown in Table 19. Table 19 Grading Noise Levels Location Leq Lmax Playfields at school adjacent to the northern property line 87.3 91 Residential adjacent to the eastern property line 82.3 86 Residential property line 140 feet to the south 67.8 69.6 Residential property line 145 feet to the west 72.6 74.4 Residential property line 225 feet to the southwest 69.7 71 Although construction noise activities would have a temporary or periodic increase in the ambient noise levels above the existing noise levels within the vicinity of the project vicinity, all construction activities would be restricted to the hours allowed by Santa Ana Municipal Code Section 18-314. Therefore, construction-related noise impacts are considered less than significant. However, to be conservative and reduce construction noise levels at the nearest sensitive receptors, mitigation measures 2-9 listed in section “XIII. a)” above would further reduce construction noise impacts to area residents. Taft Elementary school to the north and multi-family residences to the east, south (south of Sunflower Avenue), west (west of Flower Street), and southwest (across the Sunflower Avenue and Sakioka Drive intersection) may be temporarily impacted by short-term construction noise on the site. The short-term noise impacts would be associated with construction workers commuting to the site, the delivery of construction materials to and from the site, ground clearing and demolition, excavation, grading, and building activities. However, the construction noise would be acoustically dispersed throughout the site and not concentrated in one area near adjacent surrounding sensitive land uses. Santa Ana Municipal Code section 18-314 exempts noise associated with construction, repair, remodeling, or grading of any real property from the noise limitations of the Municipal Code, provided that construction activities do not occur between the hours of 8:00 PM and 7:00 AM on weekdays, including Saturdays, or any time on Sundays or federal holidays. Because the project would be required to comply with the hours of construction as defined by Santa Ana Municipal Code section 18-314 the noise levels that are generated during construction would not have any significant noise impacts to area residents. 6-100