A.
It is declared to be the policy of the city to prohibit unnecessary, excessive and annoying noise and to encourage the reduction, control and prevention of noise in order to protect, preserve and promote the health, safety, welfare, peace and quiet for the citizens of the city. It is the intent of this section to establish standards that will eliminate and reduce unnecessary and excessive traffic and community noise, which is physically harmful and otherwise detrimental to individuals and the community in the enjoyment of life, property and conduct of business.
B.
Definitions. As used in this chapter, unless the context otherwise clearly indicates, the words and phrases used shall have the following meanings:
1. "Ambient noise"
means the all-encompassing noise associated with a given environment, being usually a composite of sounds from many sources near and far. For the purpose of this chapter, "ambient noise level" is the level obtained when the noise level is averaged over a period of fifteen (15) minutes without inclusion of noise from isolated identifiable sources, at the location and time of day near that at which a comparison is to be made.
2. "A weighted sound pressure level"
means the sound pressure level as measured with a sound level meter using the A weighting network. The standard notation is dB(A).
3. "Chief of police"
means the chief of police of the city or a duly authorized officer subject to the chief's orders.
4. "Commercial power equipment"
means any equipment or device rated at more than five horse-power and used for home or building repairs or grounds maintenance.
5. "Commercial premises"
means any premises where offices, clinics, kennels, shopping and service establishments exist and where the use of less than twenty-five (25) percent of the gross floor area is classified as residential.
6. "Construction equipment"
means any equipment or devices, such as but not limited to, pile drivers, power shovels, derricks, hoist tractors, loaders, rollers, concrete hauling motor vehicles, pavement breakers, bulldozers, crawler-tractors, rotary drills and augers, cranes, ditchers, trenchers, scrapers, wagons, pumps, compressors and pneumatic power equipment, or other mechanical apparatus operated by fuel or electric power in the construction, repair or demolition of any building, structure, land, street, alley, waterway or appurtenance thereto.
7. "Continuous noise"
means a noise sound pressure level of constant value and intensity for a period of at least thirty (30) seconds.
8. "Decibel"
means a logarithmic unit of measure often used in measuring magnitudes of sound. The symbol is dB.
9. "Device"
means any equipment or mechanism which is intended to produce or which actually produces sound when operated or handled.
10. "Domestic power equipment"
means any equipment or device rated at five horsepower or less and used for home or building repairs or grounds maintenance.
11. "Emergency vehicle"
means a motor vehicle authorized by the city or state to have sound warning devices such as sirens and bells which can lawfully be used when responding to an emergency, or during a police activity.
12. "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 exposure to imminent danger.
13. "Gross floor area"
means the sum of the gross horizontal areas of the several floors of a building, including interior balconies and mezzanines, but excluding exterior balconies. All horizontal dimensions of each floor are to be measured by the exterior faces of walls of each such floor, including the walls of roofed porches having more than one wall. The floor area of a building shall include the floor area of accessory buildings on the same zone lot, measured the same way. In computing gross floor area there shall be excluded the following:
14. "Impulsive noise"
means a noise usually less than one second in duration, characterized by brief excursions of sound pressure (acoustic impulses) which significantly exceed the ambient environmental sound pressure.
15. "Industrial premises"
means any premises where manufacturing, processing or fabrication of goods or products takes place.
16. "Motor vehicle"
means any vehicle driven or powered by any means other than muscular power.
17. "Motorboat"
means any watercraft propelled by an internal combustion engine.
18. "Muffler-approved type"
means an apparatus consisting of a series of chambers, baffle plates or other mechanical devices designed for the purpose of receiving and transmitting gases and which reduces sound emanating from such apparatus by at least twenty (20) decibels in the A weighting network dB(A), from the un-muffled condition.
20. "Noise premises"
means those premises as defined herein as residential, commercial, industrial and public.
21. "Nuisance"
means the doing of or the failure to do something which allows or permits noise to be emitted from any sources in excess of the standards of this chapter.
22. "Person"
means any person, firm, association, organization, partnership, business, trust, corporation, company, contractor, supplier, installer, user or owner, and shall include any municipal corporation, state or federal governmental agency, district, or any officer or employee thereof.
23. "Plainly audible"
means any sound that can be detected by a person using his or her unaided hearing faculties. For purposes of this section, if the sound source under investigation is a portable or personal vehicular sound amplification or reproduction device, the enforcement officer need not determine the title of a song, specific words, or the artist performing the song. The detection of the rhythmic base component of the music is sufficient to constitute a plainly audible sound.
24. "Premises"
means any building, structure, land, utility or portion thereof, including all appurtenances, and shall include yards, lots, courts, inner yards and real properties without buildings or improvements, owned or controlled by a person.
25. "Property line"
means that real or imaginary line and its vertical extension which separates real property owned or controlled by any person from contiguous real property owned or controlled by another person and separates real property from the public premises.
26. "Public premises"
means all real property including appurtenances thereon which is owned or controlled by any public governmental entity and shall include streets, alleys, parks and waterways.
27. "Residential premises"
means any premises where single or multiple dwelling units exist and shall include schools, churches, hospitals, nursing homes and similar institutional facilities including any commercial premises where the use of more than twenty-five (25) percent of the gross floor area meets this definition of residential premises.
28. "Sound"
means an oscillation in pressure, stress, chapter displacement and particle velocity which induces auditory sensation.
29. "Sound level meter"
means an apparatus or instrument including a microphone, amplifier, attenuator, output meter and frequency weighting networks for the measurement of sound levels.
The sound level meter shall be of a design and have the characteristics of a Type 2 or better instrument as established by the American National Standards Institute, publication S1.4-1971 entitled Specification for Sound Level Meters. |
30. "Sound Pressure level"
means twenty (20) times the logarithm to the base ten (10) of the ratio of the pressure of a sound to the reference pressure of twenty (20) micronewtons per square meter (20 × 10.6-6 Newtons/meter2), and is expressed in decibels (dB).
31. "Tree maintenance equipment"
means any equipment used in trimming or removing trees only and shall be limited to chainsaws, chippers and stump removers.
C.
Noise Sound Pressure Level Measurement. For the purpose of determining noise sound pressure levels as set forth in this chapter, the following test procedures and measurements are applicable:
1.
The instrumentation for determining noise sound pressure levels shall be with a sound level meter of standard design. Sound pressure level measurements shall be made with the A weighting network.
2.
Noise sound pressure levels shall be measured at a linear distance of twenty-five (25) feet from the noise source or at the property line as specified in this chapter. Whenever it is impossible or impractical to measure the noise sound pressure levels at twenty-five (25) feet or at the property line, a greater distance from the noise source shall be used to determine compliance with this chapter.
D.
Inspections.
1.
For the purpose of determining compliance with the provisions of this chapter, the chief of police and authorized representatives of the chief of police are authorized to make inspections of all noise sources and to take measurements and tests whenever necessary to determine the quantity and character of noise. Measurements and tests taken by a properly calibrated and tested noise decibel monitoring device installed at the direction of the inspector of buildings, the chief of police or his/her designee may also be the basis for instituting action for any violation of this section. If any person refuses or restricts entry and free access to any part of a premise, or refuses inspection, testing or noise measurement of any activity, device, facility, motor vehicle, or process where inspection is sought, the chief of police or authorized representatives may seek from the court a warrant for inspection requiring that such person permit entry and free access without interference, restriction or obstruction, at a reasonable time, for the purpose of inspecting, testing or measuring noise. The court shall have power, jurisdiction and authority to enforce all orders issued under the provisions of this chapter.
2.
It shall be unlawful for any person to refuse to allow or permit the chief of police or authorized representative free access to any premises when the chief of police or authorized representative is acting in compliance with a warrant for inspection issued by the court.
3.
It shall be unlawful for any person to violate the provisions of any warrant or court order requiring inspection, testing or measurement of noise or noise services.
4.
No person shall hinder, obstruct, delay, resist, prevent in any way, interfere, or attempt to interfere with any authorized person while in the performance of duties under this chapter.
5.
Any person, including a police officer, may be a complainant for the purpose of instituting action for any violation of this section.
E.
Misrepresentation to Avoid Compliance. It shall be unlawful for any person to misrepresent or give any false or inaccurate information or in any way attempt to deceive the manager of environmental health or the chief of police in order to avoid compliance with the provisions of this section.
F.
Restriction of Noise Upon and Between Premises.
1.
It shall be unlawful for any person to emit or cause to be emitted any noise which leaves the premises on which it originates, crosses a property line, and enters onto any other premises in excess of the sound pressure levels during the time periods as specified in Table A or engaging in any of the prohibited activities as set forth in subsection (G) of this section. It is further unlawful for any person to emit or cause to be emitted any noise within the public premises in excess of the noise sound pressure level during the time period as specified in Table A or engaging in any of the prohibited activities as set forth in subsection (G) of this section.
Table A Maximum Allowable Noise Sound Pressure Levels For Specific Premises | |||
|---|---|---|---|
Type of Premises | Location Where Noise is Measured | Time Period | Maximum Allowable Sound Pressure Level |
Residential premises | Property line | 7:00 a.m. to 10:00 p.m. | 55 dB(A) |
Residential premises | Property line | 10:00 p.m. to 7:00 a.m. | 50 dB(A) |
Commercial premises | Property line | 7:00 a.m. to 10:00 p.m. | 65 dB(A) |
Commercial premises | Property line | 10:00 p.m. to 7:00 a.m. | 60 dB(A) |
Industrial premises | Property line | 7:00 a.m. to 10:00 p.m. | 80 dB(A) |
Industrial premises | Property line | 10:00 p.m. to 7:00 a.m. | 75 dB(A) |
Public premises | Property line or anywhere on public premises | 7:00 a.m. to 10:00 p.m. | 75 dB(A) |
Public premises | Property line or anywhere on public premises | 10:00 p.m. to 7:00 a.m. | 70 dB(A) |
2.
The maximum permissible sound pressure levels as specified in subsection (F)(1) and Table A shall not apply to sounds emitted from:
a.
Any bell or chime from any building clock, school or church;
b.
Any siren, whistle or bell lawfully used by emergency vehicles or any other alarm systems used in case of fire, collision, civil defense, police activity or imminent danger; provided, however, that burglar alarms not terminating within fifteen (15) minutes after being activated shall be deemed a nuisance and unlawful;
c.
Any aircraft in flight subject to federal law regarding noise control and any helicopter in the act of landing or taking off at a helipad licensed by the city so long as the helicopter is not landing or taking off in violation of any conditions or restrictions of the helipad's license;
d.
Any aircraft testing or run up noise on the ground, provided, however, that emission of such noise in excess of a sound pressure level of sixty (60) dB(A) when measured upon an inhabited residential premises shall be deemed an unlawful nuisance;
e.
Any activities of a temporary duration which are permitted by law and for which a license or permit has been granted by the city, including but not limited to, parades, sporting events, concerts, block parties and firework displays;
f.
Any motor vehicles designed for and operated on public streets, alleys, highways or freeways, but not including the following which shall be governed by subsection (F)(1) and Table A:
g.
Any construction equipment or tree maintenance equipment operated upon a residential, commercial, industrial or public premises during the time period between 7:00 a.m. and 10:00 p.m.; provided, however, that operation of construction equipment or tree maintenance equipment between the hours of 10:00 p.m. and 7:00 a.m. shall not exceed the maximum sound pressure levels as specified in Table A of subsection (F)(1) of this section;
h.
Any domestic power equipment operated upon any residential, commercial, industrial or public premises between 7:00 a.m. and 8:00 p.m.; provided, that such equipment does not exceed a sound pressure level of eighty (80) dB(A) when measured twenty-five (25) feet from the noise source, and further provided that between the hours of 10:00 p.m. and 7:00 a.m. such equipment does not exceed the maximum sound pressure levels as specified in Table A of subsection (F)(l) of this section;
i.
Any commercial power equipment operated upon any residential, commercial, industrial or public premises between 7:00 a.m. and 8:00 p.m.; provided, that such equipment does not exceed a sound pressure level of eighty-eight (88) dB(A) when measured twenty-five (25) feet from the noise source and further provided that between 10:00 p.m. and 7:00 a.m. such equipment does not exceed the maximum sound pressure levels as specified in Table A of subsection (F)(1) of this section.
3.
It shall be unlawful for any person to operate, or for the owner to permit operation of any construction equipment, tree maintenance equipment, domestic power equipment, commercial power equipment, or power equipment and auxiliary equipment on or within motor vehicles in excess of the maximum sound pressure levels established in subsections (F)(1) and (F)(2)(g) through (F)(2)(i) except when performing emergency work.
G.
Prohibited Noise Activities. The following activities are prohibited notwithstanding the sound pressure levels specified in Table A:
1.
Vehicle Horns. No person shall, at any time, sound any horn or other audible signal device of a motor vehicle unless it is necessary as a warning to prevent or avoid a traffic accident.
2.
Truck Idling. No person shall operate an engine of any standing motor vehicle with a weight in excess of ten thousand (10,000) pounds manufacturer's gross vehicle weight (GVW) for a period in excess of ten (10) minutes when such vehicle is parked on a residential premises or on the public premises next to a residential premise; provided, however, that vehicles confined and operated within an enclosed structure shall not be subject to the provisions of this section.
3.
Exhaust Discharge. No person shall discharge into the ambient air the blow-down at any stream or the exhaust of any stationary internal combustion engine or air compressor equipment, unless such discharge be through a muffler of the approved type as defined by Section 36-2(16)[1] or through an apparatus providing equal noise reduction.
[1]
Editor's note: Prior code Section 36-2(16) expired.
4.
Trash Compacting and Collection. No person shall operate any trash compacting mechanism on any motor vehicle or on any premise, nor shall any person engage in any commercial or industrial site trash, rubbish or garbage collection activity between the hours of 10:00 p.m. and 7:00 a.m.
5.
Personal or commercial music amplification or reproduction equipment shall not be operated in such a manner that the sound is plainly audible or disturbs any neighborhood or person(s) of average sensibilities at a distance of fifty (50) feet in any direction from the operator and/or the property line of the property on which the application equipment is located between the hours of 8:00 a.m. and 9:00 p.m. Between the hours of 9:00 p.m. and 8:00 a.m., sound from such equipment shall not be plainly audible at a distance of twenty-five (25) feet in any direction from the operator and/or the property line of the property on which the application equipment is located.
A violation may be found and a summons issued on the basis of two formal complaints made to any police officer. All formal complaints pertaining to a violation under this section, shall be made in writing to any police officer, and no formal complaint shall be taken and no summons shall be issued for any violation unless there are at least two or more formal complaints by witnesses residing in separate domiciles who has signed such a formal complaint, notwithstanding the present authority of a police officer to issue summonses.
6.
Self-contained, portable, hand-held music or sound amplification or reproduction equipment shall not be operated on a public space or public right-of-way in such a manner as to be plainly audible at a distance of fifty (50) feet in any direction from the operator between the hours of 8:00 a.m. and 10:00 p.m. Between the hours of 10:00 p.m. and 8:00 a.m., sound from such equipment shall not be plainly audible by any person other than the operator.
A violation may be found and a summons issued on the basis of two formal complaints made to any police officer. All formal complaints pertaining to a violation under this section, shall be made in writing to any police officer, and no formal complaint shall be taken and no summons shall be issued for any violation unless there are at least two or more formal complaints by witnesses residing in separate domiciles who has signed such a formal complaint, notwithstanding the present authority of a police officer to issue summonses.
H.
Motorboat Noise. No person shall operate nor shall the owner permit the operation of any motorboat such that the sound pressure level resulting from said operation exceeds eighty-four (84) dB(A) at any time as measured fifty (50) feet from the motorboat.
I.
Motor Vehicle Noise.
1.
No person shall operate nor shall the owner permit the operation of any motor vehicle or combination of motor vehicles at any time or place when such operation exceeds the noise sound pressure levels for the category of motor vehicle and for the designated time period specified in Table B. The standards in Table B shall apply to all noise emitted from motor vehicles including any and all equipment thereon, under any condition of acceleration, deceleration, idle, grade or load and whether or not in motion.
Table B Maximum Allowable Noise Sound Pressure Levels For Motor Vehicles | |||
|---|---|---|---|
Type of Vehicle | Time Period | Maximum Allowable Sound Pressure Level | Measurement Distance From Motor Vehicle |
Motor vehicle weighing less than 10,000 pounds, Manufacturer's Gross Vehicle Weight | At any time | 80 dB(A) | 25 feet |
Motor vehicle weighing more than 10,000 pounds, Manufacturer's Gross Vehicle Weight | 7:00 a.m. to 10:00 p.m. | 88 dB(A) | 25 feet |
Motor vehicle weighing more than 10,000 pounds, Manufacturer's Gross Vehicle Weight | 10:00 p.m. to 7:00 a.m. | 80 dB(A) | 25 feet |
2.
It shall be unlawful for any person to drive or move, or for the owner of any motor vehicle to permit to be driven or moved any motor vehicle or combination of motor vehicles at any time which is not equipped with an exhaust muffler-approved type as defined by this section.
3.
It shall be unlawful for any person or for the owner of a motor vehicle to modify or change the exhaust muffler, air intake muffler or any other sound reducing device in such a manner that the noise emitted from the motor vehicle exceeds the sound pressure levels as established in Table B of this section or is increased above the sound pressure level of the vehicle as originally manufactured. Muffler cut-outs, by-passes or other devices which increase sound pressure levels, or change the original manufactured exhaust system of any motor vehicle, shall be considered a violation of this section.
J.
Penalty for Violations. Any person found in violation of this section by any police officer or on the basis of filing of formal complaints as set forth in subsection (G)(5) or (G)(6) of this section in this city shall upon conviction be punished by a fine of not more than fifty dollars ($50.00) for any one offense, not more than one hundred dollars ($100.00) for a second offense, and not more than five hundred dollars ($500.00) for each subsequent offense thereafter. For the purposes of this section, each hour during which noise levels exceed those permitted by this chapter shall be considered a separate offense.
K.
City Contracts to Require Compliance. Any written agreement, purchase order or contract whereby the city is committed to an expenditure of funds in return for work, labor, services, supplies, equipment, materials or any combination thereof, shall not be entered into unless such agreement purchase order of instrument contains provisions that any equipment or activities which are subject to the provisions of this chapter will be operated, constructed, conducted or manufactured without violating the provisions of this chapter.
(Prior code § 18-5.1; Ord. 04-54 § 1; Ord. 05-46 §§ 1, 2; Ord. 2013-16, § 2, 5/28/2013; Ord. 2020-8, § 1, 2/24/2020)