2019-090 - Adopting the Mitigated Negative Declaration

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*:/ : 11-1111 dPA ■ The noise standards plus 15 dBA shall not be exceeded for a cumulative period of more than 1 minute in any hour (the Ll6 level); of ■ The noise standard plus 20 dBA shall not be exceeded for any period of time (the I.. level). In the event the existing ambient noise level exceeds any of the above noise limit categories, the cumulative period applicable to the category shall be increased to reflect the ambient noise level. Section 18.314 of the City's Noise Ordinance specifically excludes several noise sources from these standards including, but not limited to, noise from: (c) Activities conducted at any park or playground, provided such park or playground is owned and operated by a public entity; (e) Noise sources associated with construction, repair, remodeling, or grading of any real property, provided it does not take place between the hours of 8:00 PM and 7:00 AM on weekdays, including Saturday, or any time on Sunday or a Federal holiday. Construction As discussed above, the City of Santa Ana's Noise Ordinance exempts noise from construction activities that occur during the daytime. No construction shall be permitted outside of the hours specified in Section 18- 314(e) of the City of Santa Ana's Municipal Code. The City of Santa Ana restricts construction activities to the daytime hours of 7:00 AM and 8:00 PM Monday through Saturdays of anytime on Sunday or a federal holiday. Would the project result in: a) Generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies? Less Than Significant Impact With Mitigation Incorporated. Construction Noise Impact The following analysis was prepared for the 1.09-acfe, the Raitt Street Site, as this site represents a worst case scenario for construction. Both replacement park sites are vacant without any above -grade structures and require mature tree removal; however, the Raitt Street Site is larger in size and more park amenities have been proposed compared to 6th Street Site. The nearest sensitive noise receptors from both sites are approximately 70 feet from the center of the construction area. Therefore, temporary noise impacts at 0.42-acre, 6th Street Site, is anticipated to be equal to or less than that of the Raitt Street Site, and the following analysis is applicable to both replacement park sites. Construction noise represents a short-term impact on ambient noise levels. Construction activities related to the Raitt Street Site is tentatively scheduled to take approximately 2.5 months. Considering the size and generally flat and vacant condition of the site, is anticipated that the construction -related traffic, in terms of the number 75C-111