Fresno

The City of Fresno Code of Ordinances, Article 1, establishes noise regulations ("Noise Ordinance of the City of Fresno") with ambient noise level limits varying by district and time of day, measured in decibels. Residential areas are limited to 50 decibels from 10 pm to 7 am, 55 decibels from 7 pm to 10 pm, and 60 decibels from 7 am to 7 pm; commercial areas are limited to 60 decibels from 10 pm to 7 am and 65 decibels from 7 am to 10 pm; and industrial areas have a 70-decibel limit at any time. The ordinance provides technical definitions including ambient noise (averaged over 15 minutes excluding the offending noise), decibel, emergency work, frequency, hertz, and microbar. These regulations were originally enacted as Ordinance 1076 and repealed and added by Ordinance 72-163 in 1972.

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