Definitions. As used in this subsection, the following terms shall
have the meanings indicated:
APPLIANCES
A device or piece of equipment designed to perform a specific
task, including refrigerators, dishwashers, washing machines, dryers,
and similar items.
DAYTIME
7:00 a.m. to 10:00 p.m., prevailing time.
DAY-NIGHT LEVEL (Ldn)
Rhe day-night level is the average A-weighted sound level
with a penalty of 10dB added to nighttime (10:00 p.m. to 7:00 a.m.)
sound levels to account for more noise-sensitive activities during
that period.
DECIBEL
A unit of sound level which is a division of a logarithmic
scale used to express the ratio of the sound pressure of the source
to the pressure of an arbitrarily chosen reference pressure, 2x10
Pa; the ratio is expressed on the decibel scale by multiplying its
base 10 logarithm by 20.
EMISSION
The sound output from any given source.
EQUIVALENT SOUND LEVEL (Leq)
The sound level that equals the dBA hypothetical constant
sound, which represents the acoustic energy arriving at a given location
over a particular period of time.
EXCESSIVE NOISE
Sound which is injurious or which unreasonably interferes
with the comfortable enjoyment of life and property and is annoying
to a person of ordinary sensibilities. Measured noise levels in excess
of the limits established in these regulations or those specified
in valid permits are declared to be excessive.
HEAVY CONSTRUCTION MACHINERY
Motor vehicles or equipment used for construction that include,
but are not limited to, crawler-tractors, bulldozers, excavators,
rotary drills, power shovels, motor graders, paving machines, compactors,
trenchers, pavement breakers, compressors, and similar earthmoving
machinery.
MOTOR VEHICLE
Any human-operated motorized vehicle that customarily requires
registration with a government agency. This includes, but is not limited
to, road vehicles, off-road vehicles, motorcycles, watercraft, snowmobiles,
all-terrain vehicles, etc.
NIGHTTIME
10:00 p.m. to 7:00 a.m., prevailing time.
PERSON
Any owner, lessee, occupier, guest, visitor of a property,
to include natural persons and entities.
POWER TOOLS
Whether intended for home or commercial use, those tools
or equipment that operate by a motorized or powered mechanism, including,
but not limited to, lawn mowers, chain saws, powered hand tools, generators,
air compressors, etc.