A. Sounds caused by the performance of emergency work, or by the ordinary and accepted use of emergency apparatus and equipment.

 

B. Sounds caused by sources regulated as to sound production by federal law.

 

C. Sounds not electronically amplified, created by athletic and entertainment events other than motor vehicle racing events.

 

D. Sounds caused by agricultural and forestry operations within an FF zone of the City.

 

E. Blasting, under permit.

 

F. Sounds made by warning devices operated continuously for 3 minutes or less.