The following words, terms and phrases, when used in this chapter, shall have the meanings herein given, except where the context clearly indicates a different meaning. All terminology used in this chapter, not defined below, shall be in conformance with the applicable publications of the American National Standards Institute [ANSI S1.1 - 1960 (R1971) and its revisions] or its successor body.
AMBIENT NOISEThe all-encompassing noise associated with a given environment, being usually a composite of sounds from many sources near and far.
A-WEIGHTED SOUND LEVELThe sound-pressure level, in decibels, as measured on a sound-level meter using the A-weighting network. The level so read is designated "dB(A)."
CONSTRUCTION OPERATIONThe erection, repair, renovation, demolition or removal of any building or structure and the excavation, filling, grading and regulation of lots in connection therewith.
DECIBEL (dB)A unit for measuring the sound-pressure level, equal to 20 times the logarithm to the base 10 of the ratio of the pressure of the sound measured to the reference pressure, which is 20 micropascals (20 micronewtons per square meter).
EMERGENCYAny occurrence or set of circumstances involving actual or imminent physical trauma or property damage.
EMERGENCY WORKAny work performed for the purpose of preventing or alleviating the physical trauma or property damage threatened or caused by an emergency.
IMPULSIVE SOUNDSound of short duration, usually less than one second, with an abrupt onset and rapid decay. Examples of impulsive sound include explosions, drop-forge impacts and the discharge of firearms.
NOISEAny sound which annoys or disturbs humans or which causes or tends to cause an adverse psychological or physiological effect on humans.
NOISE DISTURBANCEAny sound which:
A. Endangers or injures the safety or health of humans or animals.
B. Annoys or disturbs a reasonable person of normal sensitivities.
C. Endangers or injures personal or real property.
D. Is in excess of the sound levels by zoning districts established herein.
PERSONAny individual, association, partnership or corporation and includes any officer, employee, department, agency or instrumentality of a state or any political subdivision of a state. Whenever used in any clause prescribing and imposing a penalty, "person" includes the individual members, partners, officers and managers, or any of them, of partnerships and associations and, as for corporations, the officers and managers thereof or any of them.
POWERED MODEL VEHICLEAny self-propelled airborne, waterborne or landborne plane, vessel or vehicle which is not designed to carry persons, including but not limited to any model airplane, boat, car or rocket.
PROPERTY LINE (BOUNDARY)An imaginary line drawn through the points of contact of adjoining lands, apartments, condominiums, townhouses and duplexes owned, rented or leased by different persons, a demarcation or a line of separation of properties, and also, for any two or more buildings sharing common grounds, the line drawn midway between any two such buildings. All areas devoted to public rights-of-way shall be deemed to be across the property line. For the purpose of this definition, the "property line" includes all points on a plane formed by projecting the property line in a manner deemed appropriate by the enforcing police officer.
PUBLIC RIGHT-OF-WAYAny street, avenue, boulevard, highway, sidewalk, alley or similar place which is owned or controlled by a governmental entity.
PUBLIC SPACEAny real property or structures thereon which are owned or controlled by a governmental entity.
PURE TONEAny sound which can be heard as a single pitch or a set of single pitches. For the purpose of this chapter, 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 octave bands by five dB's for center frequencies of 500 hertz and above and by eight dB's for center frequencies between 160 and 400 hertz and by 15 dB's for center frequencies less than or equal to 125 hertz.
REAL PROPERTYAll land, whether publicly or privately owned, whether improved or not improved, with or without structures, exclusive of any areas devoted to public rights-of-way.
SOUNDAn oscillation in pressure, particle displacement, particle velocity or other physical parameter, in a medium with internal forces that causes compression and rarefaction of that medium, or the superposition of such propagated oscillation which evokes an auditory sensation. The description of "sound" may include any characteristics of such sound, including duration, intensity and frequency.
SOUND LEVELThe weighted sound-pressure level obtained by the use of a sound-level meter and frequency weighting network, such as A, B or C, as specified in the American National Standards Institute specifications for sound-level meters (ANSI S1.4-1971 or the latest revision thereof). If the frequency weighting employed is not indicated, the A-weighting shall apply.
SOUND-LEVEL METERAn instrument which includes a microphone, amplifier, RMS detector, integrator or time averager, output meter and any applicable weighting network used to measure sound-pressure levels which meets or exceeds the requirement for a Type I or Type II sound level as specified in American National Standards Institute Specification S1.4-1971. The manufacturer's published indication of compliance with such specifications shall be prima facie evidence of such compliance.
ZONING DISTRICTSThe land use districts established by the Zoning Ordinance of the Borough, as codified in Chapter
220 of the Code of the Borough of Columbia, Pennsylvania, and all subsequent amendments thereto.