§ 25-24. Noise.

Any use established after the effective date of adoption or amendment of this chapter shall be so operated as to comply with the maximum performance standards governing noise set forth hereinafter. No use already established on the effective date of adoption or amendment of this chapter shall be so relocated, altered or modified as to exceed the maximum performance standards governing noise set forth hereinafter.

(a)

Objectional sounds of an intermittent nature shall be controlled, so as not to become a nuisance to adjacent uses.

(b)

Notwithstanding any other provisions of this chapter, at no point along the boundaries of any residential district or commercial district shall the sound pressure level of any individual use permitted exceed the prescribed levels of the following table:

Frequency of Sound	Maximum Permitted Sound Level
	Residential District Boundaries	Commercial District Boundaries
Up to 75 cycles per second	72 decibels	79 decibels
76 to 150 cycles per second	67 decibels	74 decibels
151 to 300 cycles per second	59 decibels	66 decibels
301 to 600 cycles per second	52 decibels	59 decibels
601 to 1200 cycles per second	46 decibels	53 decibels
1201 to 2400 cycles per second	40 decibels	47 decibels
2401 to 4800 cycles per second	34 decibels	41 decibels
Above 4800 cycles per second	32 decibels	39 decibels

 

Sound levels shall be measured with a sound level meter and an associate filter manufactured according to the standards prescribed by the American Standards Association. Noise levels shall be measured from the exterior lot lines of the land which a complaint has been received.

(Ord. No. 11296, 6-16-97)