Item 26 - Public Hearing Vista Heritage Charter School (601 North Fairview Street)

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Vista Charter Public Schools District Office and Outdoor Space Project CEQA Exemption 15183 other places where low interior noise levels are essential are also considered noise -sensitive land uses. The closest sensitive receptors to the project site are residential uses located approximately 100 feet to the north of the project site and the existing Romero -Cruz Academy School is located approximately 100 feet to the west. PROJECT -GENERATED NOISE IMPACTS It is difficult to specify noise levels that are generally acceptable to everyone; noise that is considered a nuisance to one person may be unnoticed by another. Standards may be based on documented complaints in response to documented noise levels or based on studies of the ability of people to sleep, talk, or work under various noise conditions. Short-term Construction Impacts The project involves remodeling activities associated with paving, building construction, and architectural coating applications and would be completed in approximately eight months. Typical noise levels generated by construction equipment are shown in Table 8, Maximum Noise Levels Generated by Typical Construction Equipment. Operating cycles for these types of construction equipment may involve one or two minutes of full power operation followed by three to four minutes at lower power settings. Other primary sources of acoustical disturbance would be due to random incidents, which would last less than one minute (such as dropping large pieces of equipment or the hydraulic movement of machinery lifts). Construction noise levels in the project vicinity would fluctuate depending on the particular type, number, and duration of usage for the varying equipment. The effects of construction noise largely depend on the type of construction activities occurring on any given day, noise levels generated by those activities, distances to noise -sensitive receptors, and the existing ambient noise environment in the receptor's vicinity. Construction generally occurs in several discrete phases, with each phase requiring different equipment with varying noise characteristics. These phases alter the characteristics of the noise environment generated on the proposed project site and in the surrounding community for the duration of the construction process. Table 8 Maximum Noise Levels Generated by Typical Construction Equipment Type of Equipment Acoustical Use Factor' Lmax at 50 Feet (dBA) Lmax at 100 Feet dBA Compressor 40 78 72 Crane 40 82 75 Concrete Mixer Truck 40 76 73 Forklift 40 85 72 Paver 50 77 71 Roller 20 80 74 Tractor 40 84 78 Water Truck 40 80 1 1 74 Note: 1. Acoustical Use Factor (percent): Estimates the fraction of time each piece of construction equipment is operating at full power (i.e., its loudest condition) during a construction operation. Source: Federal Highway Administration, Roadway Construction Noise Model FHWA-HEP-05-054 , January 2006. Noise levels depicted in Table 8 represent maximum sound levels (Lmax), which are the highest individual sound occurring at an individual time period. The closest sensitive receptors to the Dec i y ouncil 26 — 105 1/16/202 e 45