The following activities shall be exempted from the provisions of this chapter:
A. Activities conducted in public parks, public playgrounds and public or private school grounds, including but not limited to school athletic and school entertainment events during normal hours of instruction;
B. Any mechanical device, apparatus or equipment used, related to, or connected with emergency activities or emergency work;
C. Noise sources associated with the infrequent, occasional and unusual maintenance of residential property provided such activities take place between the hours of six a.m. and nine p.m. on any day except Saturday or Sunday, or between the hours of eight a.m. and nine p.m. on Saturday or Sunday;
D. Noise sources associated with a lawful commercial or industrial activity caused by installed mechanical devices or equipment, including air conditioning or refrigeration systems, installed prior to the effective date of this chapter; that this exception shall expire twelve months after the effective date of the chapter. This exception shall not apply to such mechanical devices which are not in good repair;
E. Noise sources associated with the collection of waste or garbage from commercially zoned or industrially zoned property by the city or its authorized franchisee;
F. Any activity to the extent regulation thereof has been preempted by state or federal law;
G. Notwithstanding the provisions of Sections 8.36.040 and 8.36.050, where the intruding noise source when measured as provided in Section 8.36.030 is an existing residential air conditioning or refrigeration system or associated equipment, the exterior noise level at the property line shall not exceed fifty-five (55) dBA. For residential air conditioning or refrigeration systems or associated equipment installed after the effective date of this chapter, the exterior noise level at the property line when measured as provided in Section 8.36.030 shall not exceed fifty (50) dBA;
H. Notwithstanding the provisions of Sections 8.36.040 and 8.36.050, the collection of waste or garbage from residentially zoned property or from persons authorized to engage in such activity, and who are operating truck-mounted loading or compacting equipment, shall not take place before six a.m. or after seven p.m. The noise level created by such activities when measured at a distance of fifty (50) feet in an open area shall not exceed the following standard:
1. Eighty-five (85) dBA for equipment in use, purchased or leased prior to the effective date of this chapter,
2. Eighty (80) dBA for new equipment purchased or leased after the effective date of this chapter;