The city council finds and declares that:
A. 
Inadequately controlled noise presents a growing danger to the health and welfare of the residents of the city;
B. 
The making and creating of disturbing, excessive, offensive or unusually loud noises within the jurisdictional limits of the city is a condition which has persisted and the level and frequency of occurrence of such noises continue to increase;
C. 
The making, creation or continuance of such excessive noises which are prolonged or unusual in their time, place, and use affect and are a detriment to the public health, comfort, convenience, safety, welfare, and prosperity of the residents of the city;
D. 
Every person is entitled to an environment in which the noise is not detrimental to his or her life, health, and enjoyment of property; and
E. 
The necessity in the public interest for the provisions and prohibitions contained and enacted in this chapter is declared to be a matter of legislative determination and public policy, and it is further declared that the provisions and prohibitions contained and enacted in this chapter are in pursuance of and for the purpose of securing and promoting the public health, comfort, convenience, safety, welfare, prosperity, peace and quiet of the city and its inhabitants.
(Prior code § 36.401)
Whenever the following words and phrases are used in this chapter, unless otherwise defined herein, they shall have the meaning ascribed to them in this section:
"Average sound level"
means a sound level typical of the sound levels at a certain place during a given period of time, averaged by the general rule of combination for sound levels, said general rule being set forth in American National Standard Specifications for Sound Level Meters § 1.4-1971. "Average sound level" also means equivalent continuous sound level.
"Commercial purpose"
means and includes the use, operation or maintenance of any sound amplifying equipment for the purpose of advertising any business, or any goods, or any services, or for the purpose of attracting the attention of the public to, or advertising for, or soliciting patronage of customers to or for any performance, show, entertainment, exhibition, exhibition, or event, or for the purpose of demonstrating sound equipment.
"Construction equipment"
means any tools, machinery or equipment used in connection with construction operations, including all types of special construction equipment as defined in the pertinent sections of the California Vehicle Code when used in the construction process on any construction site, regardless of whether such construction site be located on-highway or off-highway.
"Container"
means any receptacle, regardless of contents, manufactured from wood, metal, plastic paper, or any other material, including, but not limited to, any barrel, basket, box, crate, tub, bottle, can or refuse container.
"Decibel"
means a unit of measure of sound (noise) level.
"Disturbing, excessive or offensive noise"
means:
1. 
Any sound or noise which constitutes a nuisance involving discomfort or annoyance to persons of normal sensitivity residing in the area;
2. 
Any sound or noise conflicting with criteria standards, or levels as set forth in this chapter for permissible noises;
3. 
Any sound or noise conflicting with criteria standards or levels established for Federal or State Government which are applicable in the county.
"Emergency work"
means work made necessary to restore property to a safe condition following a public calamity, or work required to protect persons or property from imminent exposure to danger or damage or work by public or private utilities when restoring utility service.
"Fixed source"
means a machine or device capable of creating a noise level at the property upon which it is regularly located, including, but not limited to: Industrial and commercial process machinery and equipment, pumps, fans, air-conditioning apparatus or refrigeration machines.
"Motor vehicles"
means any and all self-propelled vehicles as defined in the California Vehicle Code and shall specifically include, but not be limited to, mini-bikes and go-carts.
"Noise level"
means sound level, and the terms may be used interchangeably herein.
"Noncommercial purpose"
means the use, operation, or maintenance of any sound equipment for other than a commercial purpose. "Noncommercial purpose" means and includes, but shall not be limited to, philanthropic, political, patriotic, and charitable purposes.
"Nonstationary source"
means a machine or device capable of being moved from place to place for occasional or temporary use at a given location, including, but not limited to, powered and manual construction equipment not used in connection with construction operations, powered lawn mowers, chain saws and soil tillers, but excluding motor vehicles.
"Person"
means a person, firm, association, co-partnership, joint venture, corporation, or any entity, public or private.
"Powered model vehicles"
means but shall not be limited to, airborne, waterborne, or landborne vehicles such as model airplanes, model boats, and model vehicles of any type or size which are not designed for carrying persons or property and which can be propelled in any form other than manpower or windpower.
"Sound amplifying equipment"
means any machine or device, mobile or stationary, used to amplify music, the human voice, or any sound.
"Sound level"
(noise level) means in decibels the quantity measured using the frequency weighting-A of a sound level meter as defined in subsection Q of this section.
"Sound level meter"
means an instrument for the measurement of sound which meets or exceeds the specifications contained in the most current edition of the American National Standard Specifications for Sound Level Meter.
"Sound truck"
means any motor vehicle or other vehicle, regardless of motive power, whether in motion or stationary, having mounted thereon, built-in, or attached thereto any sound amplifying equipment other than a car radio or television.
Supplementary Definitions of Technical Terms.
Definitions of technical terms not defined in this chapter shall be obtained from the most current edition of the American National Standard, Acoustical Terminology.
(Ord. 190, 1991)
A. 
Emergency Work. The provisions of this chapter shall not apply to any emergency work as defined in Section 9.24.020(H); provided, that:
1. 
The director of community development has been notified in advance, if possible, or as soon as practical after said emergency; and
2. 
Any vehicle, device, apparatus, or equipment used, related to or connected with emergency work, is designed, modified, or equipped to reduce sounds produced to the lowest possible level consistent with effective operation of such vehicle, device, apparatus or equipment.
B. 
Sporting, Entertainment, Public Events. The provisions of this chapter shall not apply to:
1. 
Those reasonable sounds emanating from authorized school bands, school athletic and school entertainment events;
2. 
Sporting, entertainment and public events which are conducted pursuant to a license or permit issued by the city, for which noise has been a consideration.
3. 
Those reasonable sounds emanating from a sporting, entertainment, or public event; provided, however, it is unlawful to exceed those levels set forth in Section 9.24.080 when measured at or within the property lines of any property which is developed and used either in part or in whole for residential purposes, unless a variance has been granted allowing sounds in excess of said levels.
(Ord. 190, 1991)
Any permit, certificate, or other notice required herein shall be displayed or maintained on the premises designated thereon.
(Prior code § 36.423)
The community development director or his designee shall have primary responsibility for the enforcement of this chapter.
(Ord. 190, 1991)
As an additional remedy, the operation or maintenance of any device, instrument, vehicle, machinery, or other item in violation of any provision of this chapter for which operation or maintenance causes discomfort or annoyance to persons of normal sensitivity, or which endangers the comfort, repose, health, or peace of residents in the area, shall be deemed and is declared to be a public nuisance and shall be subject to abatement summarily by a restraining order or injunction issued by a court of competent jurisdiction.
(Prior code § 36.420)