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(A) Noise caused by motor vehicles. Any person who violates any provision of § 158.04 for the first time within any 12 month period shall be fined an amount of not less than $300. Each subsequent violation of § 158.04 within the same 12 month period shall result in a fine of not less than $1,000 but shall not exceed $2,500. Each day such a violation occurs shall constitute a separate violation for purposes of this division.
(B) Other violations. Any person found in violation of any other provision of this chapter other than § 158.04 shall be subject to a fine in an amount not to exceed $2,500 for each such violation. Each day a violation occurs shall constitute a separate violation for purposes of this division.
(BC Ord. 2023-14, passed 7-24-23)
The scientific definitions of the terms used in this chapter shall be:
A-WEIGHTED SOUND LEVEL. The sound pressure level of a sound measured through an a-weighted filter network. The level read is designated dB(A) or dBA.
DECIBEL (dB). The unit used for comparing the sound pressure level of a sound to the sound pressure level of a reference sound having a sound pressure of 20 micropascals.
FREQUENCY. The number of periodic oscillations, vibrations, or waves per unit time (usually one second).
HERTZ. The unit for measuring the frequency of a sound. The number of hertz is the number of cycles per second of a periodic sound pressure wave.
OCTAVE BAND. A portion of the entire sound frequency spectrum contained between two frequencies, A and B, such that A = 2B.
SOUND PRESSURE LEVEL. Twenty times the logarithm (base 10) of the ratio of the measured sound pressure to a reference pressure of 20 micropascals. The sound pressure level is expressed in decibels (dB).
Sound Pressure A
SPL = 20LOG10 10
Sound Pressure B
Sound Pressure A = Measure Sound Pressure
Sound Pressure B = Referenced Sound Pressure
(10 Micropascals)
(BC Ord. 2023-14, passed 7-24-23)
The octave-band breakdowns of the dBA limits used in this chapter shall be:
(A) For a residential zone.
For a Residential Zone (55 dBA) | |
Octave Band Center Frequency (hz) | Maximum Boundary SPL (dB) |
31.5 | 72 |
1,000 | 45 |
2,000 | 39 |
4,000 | 34 |
8,000 | 32 |
(B) For a commercial zone.
For a Commercial Zone (64 dBA) | |
Octave Band Center Frequency | Maximum Boundary SPL (dB) |
31.5 | 79 |
1,000 | 55 |
2,000 | 50 |
4,000 | 46 |
8,000 | 43 |
(C) For an industrial zone.
For an Industrial Zone (dBA) | |
Octave Band Center Frequency | Maximum Boundary SPL (dB) |
31.5 | 80 |
1,000 | 57 |
2,000 | 52 |
4,000 | 48 |
8,000 | 45 |
(BC Ord. 2023-14, passed 7-24-23)