(A) Sound levels shall be measured with a sound level meter and associated octave band filter manufactured according to the standards prescribed by the United States of American Standards Institute. Measurements shall be made using the flat network of the sound level meter. Impulsive type noises shall be subject to the performance standards hereinafter prescribed provided that such noises shall be capable of being accurately measured with such equipment. Noises capable of being measured, for the purpose of this chapter, shall be those noises which cause rapid fluctuations of the needle of the sound level meter with a variation of no more than plus or minus 2 decibels. Noises incapable of being so measured, such as those of an irregular and intermittent nature, shall be controlled so as not to become a nuisance to adjacent uses.
(B) At no point either on the boundary of a residence district or a business district or at 125 feet from the nearest property line of a plant or operation, whichever distance is greater, shall the sound pressure level of an individual operation or plant (other than the operation of motor vehicles and other transportation facilities) exceed the decibel levels at the designated octave bands:
Octave Band Cycles Per Second | Maximum Permitted Sound Level in Decibels Boundaries or 125 Feet from Plant or Operation Property Line | |
Residence Districts | Business Districts | |
Octave Band Cycles Per Second | Maximum Permitted Sound Level in Decibels Boundaries or 125 Feet from Plant or Operation Property Line | |
Residence Districts | Business Districts | |
0 to 75 | 74 | 81 |
75 to 150 | 61 | 70 |
150 to 300 | 54 | 63 |
300 to 600 | 48 | 59 |
600 to 1,200 | 45 | 55 |
1,200 to 2,400 | 41 | 52 |
2,400 to 4,800 | 38 | 50 |
4,800 and over | 36 | 48 |
(Ord. 2015-08, § 15.02, passed 6-23-2015)