In order to control unnecessary, excessive and annoying noise
in the Town of Belmont, it is hereby declared to be the policy of
the Town to prohibit such noise generated from or by all sources as
specified in this bylaw.
[Amended 5-29-2013 STM, approved 10-8-2013]
Except as may be specified herein, acoustical terminology used
throughout this bylaw is that approved as American National Standard
Acoustical Terminology (ANSI S1.1-1994) by the American National Standards
Institute (ANSI). The following words, phrases and terms as used in
this bylaw shall have the meanings as indicated below:
BACKGROUND SOUND LEVEL
The sound level associated with a given environment, being
a composite of sounds from all sources excluding the alleged offensive
noise, at the location and approximate time at which a comparison
with the alleged offensive noise is to be made.
CONSTRUCTION
Those activities requiring a building permit, and shall also
include any site preparation, cemetery burial and caretaking operations,
seismic surveys, grading, assembly, erection, substantial repair,
alteration, or similar action, including demolition, for or of public
or private rights-of-way, structures, utilities or similar property.
dBA
The A-weighted sound-pressure level expressed in decibels
and referenced to 20 micropascals.
EMERGENCY VEHICLE
Any vehicle operated in an effort to protect, provide or
restore public safety, including but not limited to ambulances, police
vehicles and fire vehicles.
EMERGENCY WORK
Any work performed in an effort to protect, provide or restore
public safety, or work by private or public utilities when restoring
utility service.
ENFORCING PERSON
Any police officer of the Town or any other Town employee designated by the Select Board for this purpose. For complaints under §
60-620, "enforcing person" shall also include any authorized employee of the Office of Community Development.
IMPACT DEVICE
A construction device in which or by which a hammer, meaning
a moving mass of hard solid material, is mechanically by means of
a working fluid or compressed air caused to repetitively impact upon
and transmit kinetic energy to a tool. The tool may be included as
a part of the device, as in the case of a moil on a paving breaker
or the drill steel of a jackhammer, or it may be a mass to which the
impact device is temporarily connected as in the case of a pile and
pile driver. Examples of impact devices are pile drivers, paving breakers,
power impact hammers, impact wrenches, riveters and stud drivers.
INTRUDING NOISE
The total sound level created, caused, maintained by, or
originating from an alleged offensive source at a specified location
while the alleged offensive source is in operation.
Leq EQUIVALENT SOUND LEVEL
The level of a constant sound which, in a given situation
and time period, would convey the same sound energy as does the actual
time-varying sound during the same period, as measured with a sound-level
meter measuring Leq.
PERSON
A person, firm, association, copartnership, joint venture,
corporation or any entity recognized by applicable law, public or
private in nature.
RESIDENTIAL PROPERTY
A parcel of real property which under the Belmont Zoning
Bylaw is in whole or in part in a Single Residence A, Single Residence
B, Single Residence C, Single Residence D, General Residence or Apartment
House District or Senior Living or Residential Subdistrict.
SOUND LEVEL
The instantaneous A-weighted sound-pressure level, in decibels,
as measured with a sound-level meter set to the "A" weighting scale,
slow response.
SOUND-LEVEL METER
An instrument meeting American National Standard Institute's
Standard S1.4-1983 for Type 1 or Type 2 sound-level meters or an instrument
and the associated recording and analyzing equipment which will provide
equivalent data.
The properties hereinafter described are hereby assigned to
the following noise zones:
A. Noise Zone I: All residential properties and the grounds of any school,
hospital or similar health care institution, house of worship or library
while the same is in use, and any Cemetery or Open Space Subdistrict.
B. Noise Zone II: All other properties.
Noise associated with the following activities shall be exempted
from the provisions of this bylaw:
A. Emergency work or emergency vehicles;
B. The operation of any vehicular alarm, provided it terminates within
15 minutes of the initially recorded complaint;
C. Activities, other than construction, conducted in public parks and
playgrounds, and on public or private school grounds so long as authorized
by the appropriate jurisdiction, including but not limited to school
athletic and school entertainment events;
D. Occasional outdoor gatherings, public dances, shows, and sporting
and entertainment events, provided said events are conducted pursuant
to a permit or license issued by the appropriate jurisdiction relative
to the staging of said events;
E. Snow removal performed by snowblowers, snow throwers or snowplows
when appropriately outfitted with a muffler; and
F. Any activity to the extent regulation thereof has been preempted
by state or federal law.
Any measured noise exceeding the sound-level standards as specified in §§
60-615,
60-620 and
60-625 shall be deemed to be prima facie evidence of a violation of the provisions of this bylaw.