The following uses and activities shall be exempt from the provisions of this chapter:
1. Noises resulting from any authorized emergency vehicle when responding to an emergency call or acting in time of emergency;
2. Noises created by any city vehicle, equipment or facility while being operated for official use;
3. Operation of agricultural equipment in connection with farming operations;
4. Any aircraft operated in conformity with, or pursuant to, federal law, federal air regulations or air traffic control instructions pursuant to, or within, duly adopted federal air regulations, together with any noise created by aircraft operated under, or pursuant to, declaration of an emergency under federal air regulations;
5. Noises resulting from “emergency work,” which, for purposes of this section, shall mean work performed to prevent or alleviate physical trauma or property damage threatened or caused by an emergency, which has or may result in the disruption of utility or other vital service, and which is reasonably necessary to protect the health, safety and welfare of persons or property.
(Ord. 1397.09.04 § 1 (part), 2006)