(a) The provisions of this chapter do not apply to devices used solely for the purpose of warning, protecting, or alerting the public, or some segment thereof, of the existence of an emergency or hazardous situation.
(b) The provisions of this chapter do not apply to the following:
(1) Household tools and portable appliances in normal usage during the daylight hours;
(2) Lawn care and snow removal equipment (daytime only) when used and maintained in accordance with the manufacturer’s specifications;
(3) Mobile agricultural field machinery when used and maintained in accordance with manufacturer’s specifications;
(4) Blasting operations for demolition, construction, and mining or quarrying (daytime only);
(5) Motor vehicles on public roads, exclusive of electronically produced noise;
(6) Aircraft and related airport operations at airports licensed by the State Aviation Administration;
(7) Motor vehicles on state lands under the jurisdiction of the department of natural resources;
(8) Emergency operations;
(9) Pile driving equipment during the daytime hours of 8:00 a.m. to 5:00 p.m.;
(10) Sound created by sporting events (exclusive of shooting sports clubs that were chartered and in operation after January 1, 2001), amusement events, and entertainment events or other public gatherings operated in accordance with properly issued permits and/or licenses, and conducted in accordance with all applicable local laws, ordinances and regulations, provided that said sound is not electronically amplified. This exemption applies Sunday through Thursday between the hours of 7:00 a.m. and 10:00 p.m., and Friday through Saturday between the hours of 7:00 a.m. and 12:00 midnight. Notwithstanding the foregoing, this exemption applies to any sound, whether or not electronically amplified, created by the activities of the annual Great Frederick Fair between the hours of 7:00 a.m. and 12:00 midnight;
(11) Rapid rail transit vehicles and railroads;
(12) Construction and repair work on public property;
(13) Air conditioning or heat pump equipment used to cool or heat housing on residential property. For this equipment, a person may not cause or permit noise levels which exceed seventy (70) dBA for air conditioning equipment at receiving residential property and seventy-five (75) dBA for heat pump equipment at receiving residential property. (Ord. No. G-02-9, § 1, 6-6-02; Ord. No. G-03-14, § 1, 7-17-03)

Editor’s note--This ordinance, as referenced in subsection (a), is Ordinance No. G-02-9, adopted June 6, 2002, which added sections 15-21 through 15-21.8 to chapter 15.