• Section 8.03 Noise and Vibration.

   (a)   Noise that is objectionable as determined by the City due to volume, frequency, or beat shall be muffled, attenuated, or otherwise controlled, subject to the following:

      (1)   Objectionable sounds of an intermittent nature, or sounds characterized by high frequencies, shall be controlled so as not to become a nuisance to adjacent uses.

      (2)   Sirens and related apparatus used solely for public purposes are exempt from this requirement. Noise resulting from temporary construction activity shall also be exempt from this requirement.

      (3)   Noise levels shall not exceed seventy five (75) decibels between the hours of 6:00 a.m. and 10:00 p.m. and shall not exceed sixty (60) decibels between the hours of 10:00 p.m. and 6:00 a.m., and must comply with the levels set forth in the following table:

Sound Levels in Decibels at Property Lines
Octave Band Cycles per Second	Adjacent to All Residential Uses	Adjacent to All Commercial, Office & Industrial Uses
0 to 75	58	73
75 to 150	54	69
150 to 300	50	65
300 to 600	46	61
600 to 1200	40	55
1200 to 2400	33	43
2400 to 4800	26	41
over 4800	20	35

 

   (c)   No use shall generate any ground transmitted vibration in excess of the limits set forth below. Vibration shall be measured at the nearest adjacent lot line. The vibration maximums set forth below are stated in terms of particle velocity, which may be measured directly with suitable instrumentation or computed on the basis of displacement and frequency. When computed, the following standards shall apply:

Particle Velocity, Inches-Per Second
Frequency in Cycles per Second	Displacement in Inches
0 to 10	0.0010
10 to 20	0.0008
20 to 30	0.0005
30 to 40	0.0004
40 and over	0.0003

 

   If requested by the Zoning Administrator, the petitioner shall provide evidence of compliance with the above noted vibration calculations.

   (d)   Vibrations resulting from temporary construction activity shall be exempt from the requirements of this section.