Sec. 368.104. - Definitions.

In this Chapter and the rules promulgated by the Board under this Chapter, unless the context otherwise requires: (a) A-weighted sound level means the sound pressure level, in decibels, as measured on a sound level meter using the A-weighting scale. This level is designated dB(A) or dBA. (b) Board means the Jacksonville Environmental Protection Board. (c) Chief means the Chief of the Environmental Quality Division. (d) Decibel or dB means a unit of level when the base of the logarithm is the tenth root of ten, and the quantities concerned are proportional to power, as defined in ANSI S1.1 - 1994, or subsequent revisions. (e) Emergency means an occurrence or set of circumstances involving actual or imminent physical or psychological trauma or property damage which demands immediate action. (f) Emergency work means work performed for the purpose of preventing or alleviating an emergency. (g) Noise means a sound which disturbs humans or which causes or tends to cause an adverse psychological or physiological effect on humans, or that exceeds standards established by the Board. (h) Noise disturbance means a sound which exceeds any standard established by the Board or violates a work practice standard established by the Board. (i) Noise pollution means the emission of sound that violates any standard established by the Board. (j) Noise source means any equipment or facility or combination thereof, which operates within any land classified as Class A, B, C or D by SLUCM Codes as defined and established by the Board, and which equipment or facility or combination thereof, emits sound beyond the property line of the land on which said equipment or facility is operated. (k) Real property boundary means an imaginary line along the ground surface, and its vertical extension, which separates the real property owned by one person from that owned by another person, but does not include intrabuilding divisions. (l) Receiving land use means the use or occupancy of the real property which receives the transmission of sound. (m) Rupture Disc means a pressure relieving device that vents the pressure in a pipe or vessel if the pressure exceeds a fixed amount. (n) Safety relief valve means a relief valve used and designed to prevent explosion by high pressure in the pipe or vessel to which it is connected. (o) Sound means an oscillation in pressure in air. (p) Sound level means in decibels, a weighted sound pressure level, determined by the use of metering characteristics and frequency weightings specified in ANSI S1.4-1983, or subsequent revisions, "Specifications for Sound Level Meters". (q) Sound-level meter means an instrument which includes a microphone, amplifier, RMS detector, integrator or time averager, output or display meter and the weighting networks used to measure sound pressure levels. (r) Sound pressure level means ten times the logarithm to the base ten of the ratio of the time-mean-square pressure of a sound, in a stated frequency band, to the square of the reference sound pressure in gases of 20 μPa, Unit, decibel (dB), as defined in ANSI S1.1 - 1994, or subsequent revisions. (s) Person has the meaning given to it in Section 1.102(ll), Ordinance Code of the City of Jacksonville and in addition includes any officer, employee, agent, department or instrumentality of the Federal Government, any state, municipality, or political subdivision of the State, or of any foreign government. (Ord. 84-674-684, § 3; Ord. 85-1295-690, § 3; Ord. 94-144-121, § 6; Ord. 94-1307-763, § 2; Ord. 2008-513-E, § 1; Ord. 2009-359-E, § 3)