The following acts and sounds shall serve as an affirmative defense to any offense established in this chapter:
(A) Noise produced at an authorized event, when reasonably related to such event and the requirements of the applicable permit, if any.
(B) A person operating equipment or making deliveries for site development or site preparation between 6:00 a.m. and 7:00 p.m. on Monday through Friday, 8:00 a.m. and 6:00 p.m. on Saturday or Sunday, or as such deliveries may be allowed in a planned development district or by other city ordinance.
(C) The operation of properly maintained air conditioning, ventilating, or heating devices, if within sound levels specified by the manufacturer or similar to sound levels produced by equivalent, adjacent devices.
(D) Noise made to signal for emergency help.
(Ord. 210810A, passed 8-10-2021)