(a) In manufacturing zoning districts, inclusive, at no point on the boundary of a residential, retail or commercial zoning district shall the sound pressure level of any individual operation or plant, or the combined operations of any person, firm or corporation, exceed the decibel levels in the designated octave bands shown below for the zoning districts indicated as measured under the test procedures established by § 634.22.
Octave Ban Center Frequency (Hz) | Maximum Sound Pressure Levels (dB) along District Boundaries | |
Residence | Retail and Commercial | |
Daytime | ||
Octave Ban Center Frequency (Hz) | Maximum Sound Pressure Levels (dB) along District Boundaries | |
Residence | Retail and Commercial | |
Daytime | ||
31.5 | 77 | 84 |
1,000 | 50 | 57 |
2,000 | 44 | 51 |
4,000 | 39 | 46 |
8,000 | 37 | 44 |
A-scale levels (for monitoring purposes) | 60 dBA | 67 dBA |
Nighttime | ||
31.5 | 67 | 74 |
1,000 | 40 | 47 |
2,000 | 34 | 41 |
4,000 | 29 | 36 |
8,000 | 27 | 34 |
A-scale levels (for monitoring purposes) | 50 dBA | 57 dBA |
(b) In retail and commercial zoning districts, all activities involving the production, processing, cleaning, servicing, testing or repair of materials, goods or products, or any property use, shall conform with the performance standards stated in division (a) hereof, provided that performance standards shall in every case be applied at the boundaries of the lot on which any such activities take place.
(c) In residential zoning districts, any property use shall conform with the performance standards stated above for residential district boundaries, provided that performance standards shall in every case be applied at the boundaries of the lot on which such use is established.
(e) Whoever violates this section is guilty of a misdemeanor of the third degree.
(Ord. 1981-88, passed 8-3-1981)