As used in this chapter, the following terms shall have the
meanings indicated:
DECIBEL (dB)
A unit of measure equal to 10 times the logarithm to the
base 10 of the ratio of the square of the sound pressure to the square
of a standard reference pressure. For the purpose of this chapter,
20 micropascals shall be the standard reference pressure. When sound
pressure is measured in decibels, it is called "sound pressure level,"
or more commonly, "sound level." This chapter uses a commonly applied
A-weighted sound level (dBA).
NOISE
The intensity, frequency, duration, and character of sound.
PERSON
Any individual, group of individuals, firm, corporation,
limited liability company, or partnership.
It shall be unlawful to make or produce noise associated with
daytime activities between the hours of 10:00 p.m. and 7:00 a.m. Prohibited
activities include but are not limited to construction and demolition,
loading and unloading of materials, and domestic power tools.
When measured at the boundary line of the complainant, the A-weighted
sound level of any open-air noise, sound or music shall not exceed
57 dBA during daytime hours and shall not exceed 55 dBA during evening
hours.
The provisions of this chapter shall not apply to the following:
A. Devices used solely for the purpose of warning, protecting, or alerting
the public, or some segment thereof, of the existence of an emergency
or hazardous situation;
B. Fire or rescue station alerting devices;
C. The use of bells, chimes or sound amplifiers by churches engaged
in religious activities during daytime hours;
D. Household tools and portable appliances in normal usage during daytime
hours;
E. Construction and repair work performed during daytime hours;
F. Lawn care during daytime hours when used and maintained in accordance
with the manufacturer's specifications;
G. Snow removal and emergency road, water or sewer repair equipment;
I. Trash collection operations during daytime hours; and
J. Air-conditioning or heat pump equipment used to heat or cool commercial
and residential properties.