649.19 ZONING DISTRICT RESTRICTIONS; CONSTRUCTION SITE EXCEPTIONS.
(a) In U-5A (light manufacturing) Zoning Districts, inclusive, at no point on the boundary of a U-1, U-3, U-4, U-4A, U-5, U-6, or U-6A Zoning District shall the sound pressure level of any individual operation or Plant, or the combined, rations 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 Section 649.22.
Octave Band Center Frequency (Hz) | Maximum Sound Pressure Levels (dB) Along District Boundaries U-1 and U-3 Districts | U-4, U-4A, U-5, U-6, U-6A Districts |
DAYTIME | ||
31.5 | 77 | 84 |
63 | 76 | 83 |
125 | 70 | 77 |
250 | 62 | 69 |
500 | 56 | 63 |
1000 | 50 | 57 |
2000 | 44 | 51 |
4000 | 39 | 46 |
8000 | 37 | 44 |
A-scale levels (for monitoring purposes) | 60 dB(A) | 67 dB(A) |
NIGHTTIME | ||
31.5 | 67 | 74 |
63 | 66 | 73 |
125 | 60 | 67 |
250 | 52 | 59 |
500 | 46 | 53 |
1000 | 40 | 47 |
2000 | 34 | 41 |
4000 | 29 | 36 |
8000 | 27 | 34 |
A-scale levels (for monitoring purposes) | 50 dB(A) | 57 dB(A) |
(b) In U-3, U-4, U-4A, U-5, U-6, or U-6A 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 subsection (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 U-1 Residential Zoning Districts, any property use shall conform with the performance standards stated above for U-1 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 and shall be subject to the penalty provided in Section 698.02. (Ord. 1999-52. Passed 11-9-99.)