It is the purpose and scope of this chapter to provide regulations
defining the maximum sound levels that vehicles, appliances and equipment
shall be allowed to produce at specified distances from these devices
and also to provide for the prohibition of other kinds of prohibited
noises. These regulations and prohibitions are intended to protect
the physical, mental and social well-being of the residents of the
Township.
This chapter shall apply:
A. To all types of vehicles, appliances and equipment, whether privately
or publicly owned.
B. To sounds of any time duration.
C. To both the owner and operator of vehicles, appliances, equipment,
devices, animals or any other object creating noises.
The following devices are exempt from the provisions of these
regulations:
A. Aircraft (except model aircraft).
B. Police, fire, ambulance and other governmental emergency vehicles.
C. Back-up alarm devices on trucks and other equipment when installed
and operated in accordance with Society of Automotive Engineers' recommended
practice J994, Criteria for Back-Up Alarm Devices.
D. Governmental warning devices (i.e., civil defense or fire siren).
All acoustical terminology shall be that contained in ANSI S1.1,
Acoustical Terminology.
ANSI
American National Standards Institute or its successors.
APPLIANCE
Any device or combination of devices used or capable of being
used as a means of accomplishing a desired end, such as a window air-conditioning
unit.
DAY
The twenty-four-hour period starting at local 12:00 midnight.
DECIBEL (dB)
A unit of sound level which is a division of logarithmic
scale used to express the ratio of sound intensity of the source to
the intensity of an arbitrarily chosen reference intensity. The ratio
is expressed on the decibel scale by multiplying its base 10 logarithm
by 10.
EQUIPMENT
Any devices or combination of devices to accomplish a desired
end, such as a chainsaw, bulldozer, etc.
EXCESSIVE NOISE
Excessive noise is that sound which is:
A.
Injurious or which unreasonably interferes with the comfortable
enjoyment of life and property, including but not limited to measured
noise levels in excess of limits established in these regulations;
or
B.
Annoying to a person of ordinary sensibilities.
FLUCTUATING NOISE
A fluctuating noise is a noise whose sound level varies significantly
with time.
IMPULSIVE NOISE
Impulsive noise is characterized by brief excursions of sound
level. The duration of a single impulse is usually less than one second.
INTERMITTENT NOISE
An intermittent noise is a noise whose sound level exceeds
the ambient noise levels 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 different from
that of the ambient is on the order of one second or more.
NOISE
Noise is any sound emitted by a person, animal, vehicle,
appliance, equipment or other device and its environmental interaction.
ORDINANCE ENFORCEMENT OFFICER
Any person appointed by the Township with responsibility
to enforce municipal ordinances; or any sworn member of the Township
Police Department.
PERSON
Either the owner or operator of vehicles, appliances, equipment
or devices.
PERIOD OF OBSERVATION
The time interval during which acoustical data are obtained.
The period of observation is determined by the characteristics of
the noise being measured and the instrumentation being used. The period
of observation must be at least as long as the response time of the
instrumentation. The greater the variance in individual sound level,
the longer must be the observation time for a given expected accuracy
of measurement.
SAE
Society of Automotive Engineers, Inc.
SOUND LEVEL (NOISE LEVEL)
Airborne sound levels are expressed in dB and obtained by
the use of specific frequency-dependent weighting networks, as specified
in the referenced standards. The specific weighting network used must
be indicated by the proper notation. If the A-weighting is employed,
the sound level is identified as dB(A).
SOUND LEVEL METER
A sound level meter is an instrument or combination of instruments,
which meets or exceeds the requirements for an ANSI Type S1A or Type
S2A Sound Level Meter.
STEADY NOISE
A noise whose level remains essentially constant (i.e., fluctuations
are less than five dB), during the period of observation is a steady
noise.
VEHICLE
Any device or combination of devices used for or capable
of being used for transporting persons or property. Vehicles include,
but are not limited to, the following: automobiles, trucks, buses,
motorcycles, motorized bicycles, snowmobiles, scooters, all-terrain
vehicles, go-carts, racers and like devices, farm machinery, industrial
machinery, highway graders, trailers, graders and semitrailers.
In addition to the requirements set forth above:
A. Except for agricultural, horticultural and forestry-related uses,
no use shall regularly generate exterior noise levels in excess of
those listed in the following table:
|
Measurement Taken Along an Adjoining Property Within the
Following Districts
|
Time Period
|
Maximum Permitted Noise Level
(dBA)
|
---|
|
O-S; R-1; R-2
|
6:00 a.m. to 11:00 p.m.
|
50
|
|
O-S; R-1; R-2
|
11:00 p.m. to 6:00 a.m.
|
45
|
|
A-O; C
|
6:00 a.m. to 11:00 p.m.
|
60
|
|
A-O; C
|
11:00 p.m. to 6:00 a.m.
|
55
|
|
IP
|
Any time
|
70
|
B. Should the ambient noise level at any location exceed the above standards,
that ambient noise level shall become the maximum permitted noise
level at that location. The maximum permitted noise level shall be
applied to regularly occurring uses and activities; short-term temporary
noises and infrequent instantaneous noises may be permitted at noise
levels 20 dBA higher than the above-described standards, but only
between 6:00 a.m. and 11:00 p.m.
Any person, firm or corporation who shall violate any provision
of this chapter shall, upon conviction thereof, be sentenced to pay
a fine of not more than $1,000 plus costs and, in default of payment,
to imprisonment for a term not to exceed 30 days. Each day that a
violation of this chapter continues shall constitute a separate offense.