The terms used in this bylaw shall be defined as follows:
AMBIENT NOISE LEVEL
The all-encompassing noise level associated with a given environment, excluding any alleged condition of noise pollution.
A-WEIGHTED SOUND LEVEL
The sound pressure measured on a sound-level meter using the A-weighting network. The level read is designated DB(A) or DBA.
BUSINESS
A business area is any area included within a district zoned for business under the Braintree Zoning Bylaws. It does not include any area within a district zoned for residential purposes under the Zoning Bylaws, as herein defined, regardless of whether the area is being lawfully used or is available for such use through a variance granted by the Board of Appeal or through a nonconforming use or by any other means.
COMMERCIAL
A commercial area is any area included within a district zoned for commercial, under the Zoning Bylaws. It does not include any area within a district zoned for residential purposes under the Zoning Bylaw, as herein defined, regardless of whether the area is being lawfully used or is available for such use through a variance granted by the Board of Appeal or through a nonconforming use or by any other means.
CONSTRUCTION
Any site preparation, assembly, erection, substantial repair, alteration, or similar action (demolition excluded) for or of public or private right-of-way, structures, utilities or similar property.
DAYTIME
The time between the hours of 7:00 a.m. and 6:00 p.m. each weekday excepting Sunday in accordance with the time system locally in effect.
DECIBEL (DB)
The unit by which the sound level is measured.
DEMOLITION
Any dismantling, intentional destruction or removal of structures, utilities, public or private right-of-way surfaces, or similar property.
EMERGENCY WORK
Any work performed for the purpose of preventing or alleviating the physical trauma or property damage threatened or caused by an emergency.
HEAVY MOTOR VEHICLES
All motor vehicles having a gross vehicle weight in excess of 10,000 pounds.
L 10
The A-weighted sound level exceeded 10% of the time.
LIGHT MOTOR VEHICLES
All motor vehicles having a gross vehicle weight of 10,000 pounds or less.
MOTORCYCLE
As defined in MGL c. 90, § 1, Definitions.
MOTOR VEHICLES
As defined in MGL c. 90, § 1, Definitions.
MUFFLER OR SOUND-DISSIPATIVE DEVICE
A device for abating the sound of escaping gases of an internal combustion engine.
NOISE POLLUTION
Any sound at or above the level set forth in Article XI of this bylaw which exceeds the ambient noise level designated for the receiving land use category when measured at or within the property boundary of the receiving land use, plus any sound which:
(1)
Endangers the safety of or could cause injury to the health of humans or animals; or
(2)
Annoys or disturbs a reasonable person of normal sensitivities; or
(3)
Endangers or injures personal or real property.
PERSON
Any individual, association, partnership, or corporation including any officer, employee, department, agency or instrumentality of the state recognized by law as the subject of rights and duties.
RESIDENTIAL AREA
A residential area is for residential purposes under the Zoning Bylaw. It includes Districts A, B and C as defined in the Braintree Zoning Bylaw.
SOUND LEVEL
The weighted sound-pressure level obtained by the use of a sound-level meter and frequency weighting network XI-3 such as A, B, or C as specified in the American National Standards Institute specifications for sound level meters (ANSI).
SOUND-PRESSURE LEVEL
Twenty times the logarithm to the base 10 of the pressure of the sound to a reference pressure of 20 micro-pascals, in accordance with standard engineering and scientific practices.
VIBRATION
Any movement of earth, ground or other similar surface created by a temporal and spatial oscillation of displacement, velocity or acceleration in any mechanical device or equipment located upon, attached, affixed or in conjunction with that surface.
[Amended 5-12-1987 ATM by Art. 55]
ZONING DISTRICTS
The zoning districts and land uses established by the Zoning Bylaw of the Town of Braintree.