The following activities shall be exempt from noise control provisions of this subchapter:
(A) Activities conducted on public parks, public playgrounds and public or private school grounds including but not limited to school athletics and school entertainment events.
(B) Occasional outdoor gatherings, public dancing shows and sporting and entertainment events provided said events are conducted pursuant to any required permit or City Council authorization.
(C) Any mechanical device, apparatus or equipment when used, related to or connected with emergency work.
(D) Any activity to the extent regulation thereof has been preempted by state or federal law.
('64 Code, § 52.31) (Am. Ord. 712, passed 6-11-87)