(a) Sound and noise limits established. No person shall operate or cause to be operated any source of sound or noise as enumerated in section 15-8.5(b), and unless specifically exempted by section 15-8.6, in such a manner as to create a sound or noise disturbance or an exterior or interior sound level of any origin which exceeds the limits set forth for the receiving land use category in question for more than ten (10) per cent of any measurement period which shall not be less than ten (10) minutes when measured at or within the boundaries of a property or within the confines of a building within the receiving land use and as a result of a source of sound being located on some other property.
(b) L10 noise and sound level limits. Permissible noise and sound levels for noises or sounds transmitted to receiving land use areas shall not exceed the following limits for L10 sound or noise levels as defined herein. For the purpose of these sound and noise control provisions, such sound or noise levels shall be determined using FAST meter responses:
Receiving Land Use | Emanating Land Use | Category | Time | Level Limit |
Receiving Land Use | Emanating Land Use | Category | Time | Level Limit |
L10 Sound | Residential | Exterior | Sun. - Thurs. 7:00 a.m. - 11:00 p.m. | 60 (dB)A |
L10 Sound | Residential | Exterior | Fri. & Sat. and holidays 11:00 p.m. - 7:00 a.m. | 55 (dB)A |
L10 Sound | Residential | Exterior | Sun. - Thurs. 12:00 a.m. - 7:00 a.m. | 55 (dB)A |
L10 Sound | Commercial | Exterior | At all times | 65 (dB)A |
L10 Sound | Residential | Interior | Sun. - Thurs. 7:00 a.m. to 11:00 p.m. | 50 (dB)A |
L10 Sound | Residential | Interior | Fri. & Sat. and holidays 7:00 a.m. - 12:00 a.m. | 50 (dB)A |
L10 Sound | Residential | Interior | Sun. - Thurs. 12:00 a.m. to 7:00 a.m. | 45 (dB)A |
L10 Sound | Commercial | Interior | At all times | 55 (dB)A |
(c) Maximum sound and noise level limits. The maximum sound and noise level from any applicable sound and noise sources shall not exceed the L10 sound and noise level limits by more than the values listed below:
10 (dB) A from 7:00 p.m. to 11:00 p.m.
5 (dB) A from 11:00 p.m. to 7:00 a.m.
(d) Pure tone and impulse noise or sound. For any source of sound or noise which emits a pure tone or an impulse noise or sound, as defined herein, the sound or noise level limits for L10 and maximum sound or noise levels shall be reduced by five (5) (dB) A.
(e) District boundaries. When a noise or sound source can be identified and its noise or sound can be measured in more than one land use designation, the pressure level limits of the most restrictive use district shall apply at that designation boundary.
(f) The burden shall be on any person contesting the equivalent sound levels to establish the actual equivalent sound or noise level by clear and convincing evidence.
(Ord. No. 85-16, § 2, 3-19-85; Ord. No. 85-45, Attach. (b), 8-20-85; Ord. No. 86-3, § 6, 3-4-86; Ord. No. 86-14, § 1, 8-19-86; Ord. No. 11-003, § 2, 2-15-11; Ord. No. 18-033, § 2, 12-4-18)