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 Construction Noise Standards The City's noise ordinance exempts noise from construction activities that occur during the daytime. No construction is permitted outside of the hours identified in Municipal Code Section 18-314(e). Specifically, construction activities are restricted to the daytime hours of 7:00 am to 8:00 pm, Monday through Saturday. No construction activities are permitted on Sundays or federal holidays. Additionally, the Federal Transit Administration (FTA) established construction noise threshold of 80 dBA Leq for long-term construction projects, which is conservatively used to analyze the project's construction noise impact. Existing Conditions The project vicinity is characterized by mostly residential and commercial land uses, with urban - related activities (i.e., auto repair mechanical equipment and parking areas) being the primary sources of stationary noise. Most of the existing noise in the project area is generated from traffic along surrounding roadways including North Fairview Street and West 5th Street. Noise Measurements In order to quantify existing ambient noise levels in the vicinity of the project site, Michael Baker International (Michael Baker) conducted three noise measurements on June 28, 2023; refer to Attachment B, Noise Data. The noise measurement sites were representative of typical existing noise exposure within and immediately adjacent to the project site. The three ten-minute measurements were taken between 11:00 a.m. and 12:00 p.m. Short-term (Leq) measurements are considered representative of the noise levels throughout the day and relate closely with the noise standards for the project area; refer to Table 7, Noise Measurements. Table 7 Noise Measurements Site No. Location Leq (dBA) Lmin (dBA) Lmax (dBA) Time 1 Northeast of Romero -Cruz Academy building 72.4 87.7 49.9 11:08 a.m. 2 Vista Heritage Global Academy 66.2 80.7 46.5 11:26 a.m. 3 1 Cul-de-sac of West 7th Street 1 51.1 1 79.6 1 41.1 1 11:45 a.m. Notes: dBA = A -weighted decibels, Leq = Equivalent Sound Level; Lmin = Minimum Sound Level; Lmax = Maximum Sound Level, Peak = Highest Instantaneous Sound Level Source: Michael Baker International, May 18, 2023. Meteorological conditions were partly cloudy skies, warm temperatures, with light wind speeds (6 miles per hour), and low humidity. Noise monitoring equipment used for the ambient noise survey consisted of a Bruel & Kjaer Hand-held Analyzer Type 2250 equipped with a Type 4189 pre - polarized microphone. The monitoring equipment complies with applicable requirements of the American National Standards Institute (ANSI) for sound level meters. Noise Sensitive Receptors Noise -sensitive land uses are generally considered to include those uses where noise exposure could result in health -related risks to individuals, as well as places where quiet is an essential element of their intended purpose. Residential dwellings are of primary concern because of the potential for increased and prolonged exposure of individuals to both interior and exterior noise levels. Additional land uses such as parks, historic sites, cemeteries, and recreation areas are considered sensitive to increases in exterior noise levels. Schools, churches, hotels, libraries, and Dec i y ouncil 26 — 104 1/16/20'2 e44