The following activities or sources of noise are exempt from the provisions of this chapter:
A. Alarms and Warning Devices. Any aural alarms or warning devices, including but not limited to fire alarms, burglar alarms and emergency vehicle sirens and air horns. However, if a standard or minimum noise level is prescribed for a particular type of aural alarm or warning device by the laws or regulations of the State of California, the noise emitted from such alarm or warning device shall not exceed such standard or minimum level by more than three (3) dBA.
B. Construction and Alteration of Structures.
1. Notwithstanding any other provision of this chapter, between the hours of ten a.m. and six p.m. on Sundays and holidays, and seven a.m. and nine p.m. on other days, construction, alteration or repair of structures shall be subject to one of the following limits:
a. No individual device or piece of equipment shall produce a noise level exceeding eighty-three (83) dBA at a distance of twenty-five (25) feet from the source. If the device or equipment is housed within a structure on the property, the measurement shall be made outside the structure at a distance as close as possible to twenty-five (25) feet from the equipment.
b. The noise level at any point outside of the property plane of the project shall not exceed eighty-six (86) dBA.
2. Notwithstanding any other provision of this chapter, including but not limited to subsection B.1 of this section, for new residential development projects, or construction, alteration or repairs taking place in commercial or industrial zones between June 15 - September 15, of each calendar year, work will be allowed between the hours of 10:00 a.m. and 6:00 p.m. on Sundays and holidays, and 6:00 a.m. and 9:00 p.m. on other days. Construction, alteration or repairs of structures shall be subject to one of the following limits:
a. No individual device or piece of equipment shall produce a noise level exceeding eighty-three (83) dBA at a distance of twenty-five (25) feet from the source. If the device or equipment is housed within a structure on the property, the measurement shall be made outside the structure at a distance as close as possible to twenty-five (25) feet from the equipment.
b. The noise level at any point outside of the property plane of the project shall not exceed eighty-six (86) dBA.
C. Emergency Response Activities. Noise from emergency response activities.
D. Special Events at Which No Mechanical or Amplifying Equipment is Employed. Noise from special events conducted lawfully and without the use of sound of any kind that is mechanically produced or amplified or focused by any means.
E. Audio Equipment Used by Public Safety Officers. Noise from audio equipment used or operated by public safety officers in the performance of their duties.
(Prior code §28.6 (Ord. 1106 (part), Ord. 1456, Ord. 1499 §2, Ord. 1765 §4); Ord. 2195, Ord. 2472 §4)