Chula Vista, CA Noise from Specific Sources: Generator Noise (2026)

" A gas or diesel generator is an internal combustion engine within the plain terms of this clause, so a portable or standby generator run without adequate muffling, for example during a power outage or at a job site or event, falls directly under this prohibition. The provision doesn't set a decibel limit or time window; it instead requires the equipment itself to carry effective muffling equipment at all times it's operated, making it a source-based rather than time-based restriction. 040(C)(6) for engines discharging exhaust into the open air, and the two clauses together cover both the mechanical exhaust noise and the fan/blower noise a generator produces. 040(D). 050(A) where it constitutes a prima facie violation.