Any use established hereafter in any Residence or Business District shall be so operated as to comply with the performance standards set forth as follows:
(a) Noise. Sound levels shall be measured with a sound level meter and associated octave band filter manufactured according to standards prescribed by the American National Standards Institute, Inc. 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 are capable of being accurately measured with sound equipment. Noises capable of being so measured, for the purpose of this Zoning Ordinance, 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 two decibels. Noises incapable of being so measured, such as those of an irregular or intermittent nature, shall be controlled so as not to become a nuisance to adjacent uses.
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 shown here for the districts indicated:
Maximum Permitted Sound Level Along Boundaries, or 125 Feet From Plant or Operation Property Line
(in decibels) Octave Band Residence Business Cycles per Second Districts Districts 0 to 75 67 73 75 to 150 62 68 150 to 300 58 64 300 to 600 54 60 600 to 1,200 49 55 1,200 to 2,400 45 51 2,400 to 4,800 41 47 Above 4,800 37 43 |
(Adopting Ordinance)