(a) Maximum permissible sound levels.
(1) It shall be unlawful for any person to operate or permit to be operated any stationary source of sound in a manner as to create a 90th percentile sound pressure level (L90) of any measurement period (which shall not be less than ten minutes unless otherwise provided in this chapter) which exceeds the limits set forth for the following receiving land use districts when measured at the boundary or at any point within the property affected by the noise:
Normal Sound | ||
Receiving Land Use Category | Time | Sound Level Limit db(A) |
Normal Sound | ||
Receiving Land Use Category | Time | Sound Level Limit db(A) |
Agricultural | 6:00 a.m. to 10:30 p.m. | 75 |
10:30 p.m. to 6:00 a.m. | 55 | |
Commercial or business | At all times | 65 |
Industrial | At all times | 75 |
Noise sensitive zone | 6:00 a.m. to 10:30 p.m. | 60 |
10:30 p.m. to 6:00 a.m. | 50 | |
Residential | 6:00 a.m. to 10:30 p.m. | 60 |
10:30 p.m. to 6:00 a.m. | 55 | |
Impulsive Sound | |||
Receiving Land Use Category | Time | No. of Peaks Per Hour | Maximum db(A) |
Impulsive Sound | |||
Receiving Land Use Category | Time | No. of Peaks Per Hour | Maximum db(A) |
Agricultural | At all times | 2 | 89 |
4 | 83 | ||
8 | 77 | ||
16+ | 71 | ||
Agricultural residential | At all times | 16+ | 61 |
Commercial | At all times | 1 | 90 |
2 | 84 | ||
4 | 78 | ||
8 | 72 | ||
16+ | 66 | ||
Industrial | At all times | 1 | 95 |
Noise sensitive zone | At all times | 2 | 79 |
4 | 73 | ||
8 | 67 | ||
Residential | 6 a.m. to 10:30 p.m. | 1 | 85 |
10:30 p.m. to 6 a.m. | 1 | 80 | |
(2) When a noise source can be identified and its noise measured in more than one land use category, the limits of the most restrictive use shall apply at the boundaries between different land use categories.
(b) Correction for character of sound.
(1) For any stationary source of sound which emits a pure tone, cyclically varying sound or repetitive impulsive sound, the limits set forth in division (a) above shall be reduced by FIVE dB(A).
(2) Notwithstanding compliance with division (b)(1) above, it shall be unlawful for any person to operate or permit to be operated any stationary source of sound which emits a pure tone, cyclically varying or repetitive impulsive sound which creates a noise disturbance.
(1972 Code, § 9-3; 1992 Code, § 25.5-3) (Ord. 72-78, passed 7-10-1978; Ord. 57-98, passed 6-15-1998; Ord. 6-10, passed 2-10-2010) Penalty, see § 10.999