Chula Vista caps industrial noise at the property line: 70 dB(A) any time for I-L and I-R light industry, 80 dB(A) for heavy industry. At a receiving home the limit drops to 55 dB(A) daytime and 45 dB(A) overnight. Municipal Code Sec. 19.68.030 sets the table.
Chula Vista's noise control ordinance, Municipal Code Sec. 19.68.030, sets exterior limits by the receiving land use, measured at the property boundary. Table III limits: single-family residential 55 dB(A) day (7 a.m.-10 p.m.) and 45 dB(A) night; multiple-dwelling 60/50; commercial 65/60; light industry in the I-L and I-R zones 70 dB(A) any hour; heavy industry in the I zone 80 dB(A). Where a noise carries a steady hum, whine, or screech, the limit is reduced five dB. A data center's continuous cooling and backup generators are judged against the nearest receiver's limit - the 45 dB(A) overnight residential floor binds where an industrial site abuts homes.
Noise over the Sec. 19.68.030 limits is an infraction enforced by the City as an environmental noise disturbance, and can breach the noise conditions placed on a data center's Conditional Use Permit.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Chula Vista, CA
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