(A) The following activities are exempted from the sound level limitations of § 130.054:
(1) Emergency work necessary to restore property to a safe condition following a fire, accident or natural disaster. To restore public utilities, or to protect persons or property from an imminent danger.
(2) Sound made to alert persons to the existence of an emergency, danger, or attempted crime.
(3) Activities or operations of governmental units or agencies.
(4) Parades, concerts, festivals, fairs or similar activities subject to any sound limits in the approval by the city.
(5) Athletic, musical, or cultural activities or events (including practices and rehearsals) conducted by or under the auspices of public or private schools, and public or private colleges or universities.
(B) The following activities are exempted from the requirements of § 130.053:
(1) Regular activities or operations of governmental units or agencies provided the activity is approved in advance and in writing by both the department head or agency director and the City Manager.
(2) Emergency work necessary to restore property to a safe condition following a fire, accident or natural disaster or to restore public utilities, or to protect persons or property from an imminent danger.
(3) Devices or activity creating sound made to alert persons to the existence of an emergency, danger, or attempted crime.
(4) Equipment and activities creating sound from the collection of solid waste, within the Downtown District, after 6:00 a.m. and before 10:00 p.m.