Council updates noise ordinance with measurement standards, permits and penalties

The city council adopted a comprehensive update to the noise ordinance on June 3 that adds measurement standards, clarified prohibited noises and a special-permit process for otherwise regulated noise.

Planning staff (speaker 14) told the council the update supplies definitions and standardized measurement procedures (site and weather conditions, instrument standards — ANSI Type 2 sound-pressure-level meters), a three-tiered table of allowed decibel increases and maximums by land use and time of day, and targeted regulations for activities such as construction, loading operations, private sweepers and modified motor-vehicle exhaust. Staff recommended Type 2 meters that meet ANSI standards for municipal enforcement and outlined exceptions including city events, aircraft, rail operations and protected speech.

The ordinance sets a special-permit pathway administered by the city manager or designee for temporary, unavoidable work: the permit is limited in duration, requires proof of hardship or lack of alternative timing, requires 48-hour notice to residences within 800 feet and allows conditions to reduce noise impacts. The enforcement section retains both civil administrative remedies (hearing officer) and criminal penalties (class C misdemeanor) for egregious violations; staff said vehicle noise enforcement often relies on existing traffic/motor-vehicle rules for modified mufflers.

Council members asked for clarification on fireworks timing (the ordinance follows state code windows around Independence Day) and how free-speech protections interact with level-based rules. Staff said speech content is protected but volume-based disturbances are subject to the ordinance’s objective standards.