This article may be cited as the "Noise Control Ordinance for
Industrial Districts in Fairview Township."
As used in this article, the following terms shall have the
meanings indicated:
AMBIENT NOISE
Measured noise that is adjacent to a noise producing source
as measured from time to time by the Township noise consultant and
as set forth in Appendix A to this article.
A-WEIGHTED TEN-MINUTE EQUIVALENT SOUND LEVEL (10-MINUTE LAeq)
The equivalent sound level is the level in dBA of hypothetical
constant sound which represents the same acoustic energy arriving
at a given location over a period of 10 minutes as the actual sound
as the same is referenced in Noise Control for Engineers, Lord et
al., McGraw Hill, 1980, and Acoustics, Beranek, McGraw Hill, 1954.
CONSTRUCTION
Any site preparation, assembly, substantial repair, alteration,
reconstruction, renovation, extension, expansion, alteration or relocation
of a building or structure, or improvement of public rights-of-way,
utilities, parking facilities and stormwater facilities.
DECIBEL (dB)
A unit of sound level which is a division of logarithmic
scale used to express the ratio of the sound pressure of the source
to the pressure of an arbitrarily chosen reference pressure, two by
10-5 Pa; the ratio is expressed on the
decibel scale by multiplying its base 10 logarithm by 20.
DEMOLITION
Any dismantling, intention destruction or removal of structures,
utilities, public or private right-of-way surfaces, or similar property.
EMERGENCY
Any occurrence or set of circumstances involving actual or
imminent physical trauma or property damage.
EMERGENCY WORK
Any work performed for the purpose of preventing or alleviating
the physical trauma or property damage threatened or caused by an
emergency.
EXCESSIVE NOISE
That sound or those sounds not covered by this article which:
B.
Unreasonably interferes with the comfortable enjoyment of life
and property; or
C.
Is annoying to a person of ordinary sensibility.
IMPULSIVE SOUND
Sound of short duration, usually less than one second, with
an abrupt onset and rapid decay. Examples of sources of impulsive
sound include explosions, drop forge impacts, and the discharge of
firearms.
INDUSTRIAL DISTRICT
Those districts designated in Chapter
395, Zoning, of the Fairview Township Code, as I-1 Light Industrial District, I-2 Industrial Park District or I-3 Heavy Industrial District.
INTERMITTENT NOISE
A noise where sound level exceeds the ambient noise level
at least twice during the period of observation, which is one minute
or more. The period of time during which the level of the noise remains
at an essentially constant value above that of the ambient shall be
at least one second or more.
MOTORCYCLE
An unenclosed motor vehicle for the use of the operator and
two or three wheels in contact with the ground, including, but not
limited to, motor scooters and minibikes.
MOTOR VEHICLE
Any vehicle which is propelled or drawn on land by motor,
such as but not limited to, passenger cars, trucks, truck-trailers,
semitrailers, campers, go-carts, snowmobiles, amphibious craft on
land, dune buggies, or racing vehicles, but not including motorcycles.
NIGHTTIME
10:00 p.m. to 7:00 a.m., prevailing time.
PERSON
Any individual, association, partnership, or corporation,
and includes any officer, employee, department, agency or instrumentality
of a state or any political subdivision of a state.
PUBLIC RIGHTS-OF-WAY
Any street, avenue, boulevard, highway, sidewalk or alley
or similar place, which is owned, subject to control or controlled
by a governmental entity.
PUBLIC SPACE
Any real property or structures thereon which are owned,
subject to control or controlled by a governmental entity.
PURE TONE
Any sound which can be distinctly heard as a single pitch
or a set of single pitches. For the purposes of this article, a pure
tone shall exist if the 1/3 octave band sound pressure level in the
band with the tone exceeds the arithmetic average of the sound pressure
levels of the two contiguous 1/3 octave bands by 5 dB for center frequencies
of 500 Hz and above and by 8 dB for center frequencies between 160
and 400 Hz and by 15 dB for center frequencies less than or equal
to 125 Hz.
REAL PROPERTY BOUNDARY
An imaginary line along the ground surface, and its vertical
extension, which separates the real property owned or occupied by
one person from that owned or occupied by another person.
SOUND
An oscillation in pressure, particle displacement, particle
velocity or other such physical parameter, in a medium with internal
forces that causes compression and rarefaction of that medium. The
description of sound may include any characteristic of such sound,
including duration, intensity and frequency.
SOUND LEVEL
The weighted sound pressure level obtained by the use of
a sound-level meter and frequency-weighing network. If the frequency
weighing employed is not indicated, the A-weighing shall apply.
SOUND-LEVEL METER
Sound level measurements shall be made by equipment which
meets the precision standards of IEC 179/1973 or revisions thereof
for precision sound-level meters. Octave filters must satisfy the
requirements of ANSI § 1.11-1966 and IEC Recommendation
255 or revisions and immediately after a measurement is taken. Calibration
equipment must meet the standards of IEC 942 or revisions thereof.
SOUND PRESSURE
The instantaneous difference between the actual pressure
and the average or barometric pressure at a given point in space,
as produced by sound energy.
SOUND PRESSURE LEVEL, A-WEIGHTED (dBA)
The weighted average of the 1/3 octave band sound levels
in the frequency range of human hearing sensitivity which constitutes
a single-number rating and has been found to correlate well with people's
subjective assessment of the loudness or noisiness of many types of
sound and with hearing-damage risks due to continuous sound.
WEEKDAY
Any day Monday through Friday from 7:00 a.m. to 10:00 p.m.,
prevailing time, which is not a legal holiday.
Noise emitted from the following sources shall be exempt from
the noise standards specified herein:
A. All safety signals and warning devices (e.g., intrusion alarms, backup
alarms on trucks); authorized vehicles when responding to emergencies
(e.g., police, fire, ambulance sirens or any other device use to alert
persons to an emergency or used during the conduct of emergency work).
B. The provisions, repair and maintenance of municipal services or public
utilities.
C. Bells, chimes and carillons used for religious purposes or in conjunction
with national celebrations or public holiday; existing bells, chimes
and carillons that are currently in use for any purpose.
D. Appliances, lawn and garden equipment, snow-removal equipment and
household power tools in use between the hours of 7:00 a.m. and 10:00
p.m., provided such are operated within the manufacturer's specifications
and with all standard noise-reducing equipment in use, unmodified,
and in proper operating condition.
E. Heavy construction equipment when being used for a relatively short
period of time on a specific short-term project (such as construction
of a building; constructing, repairing or cleaning a road; drilling
a well; and other similar short-term, specific, construction, demolition,
or repair projects) in use between the hours of 7:00 a.m. and 10:00
p.m. for the duration of such short-term, specific project, provided,
such heavy construction equipment is operated within the manufacturer's
specifications and with all standard noise-reducing equipment is use,
unmodified and in proper operating condition.
F. Other activities granted by construction permits.
G. Nothing herein shall be construed to permit in districts other than industrial districts that which is prohibited under Chapter
287, Performance Standards, of the Code of Fairview Township or any amendments thereto.