The following uses and activities shall be exempt from noise level regulations:
(a) Noise of safety signals, warning devices and emergency pressure relief valves;
(b) Noise resulting from any authorized emergency vehicles when responding to an emergency call or acting in time of emergency; and
(c) Noise resulting from emergency work.
(1972 Code, § 9-5; 1992 Code, § 25.5-5) (Ord. 72-78, passed 7-10-1978; Ord. 85-78, passed 8-21-1978; Ord. 57-98, passed 6-15-1998; Ord. 6-10, passed 2-10-2010)