748.04 MAXIMUM PERMITTED DECIBEL LEVELS.
   In all Manufacturing Districts, the sound pressure level resulting from any activity, whether open or enclosed, shall not exceed, at any point on or beyond any lot line, the maximum permitted decibel levels for the designated octave band as set forth in Schedule 748.04.
   In the enforcement of this regulation, sounds produced by the operation of motor vehicles or other transportation facilities shall not be included in determining the maximum permitted decibel levels.
748.04. SCHEDULE OF MAXIMUM PERMITTED SOUND PRESSURE LEVEL (IN DECIBELS)
OCTAVE BAND (CYCLES PER SECOND)
MANUFACTURING DISTRICTS
0 to 75
79
76 to 150
74
151 to 300
66
301 to 600
59
601 to 1,200
53
1,201 to 2,400
47
2,401 to 4,800
41
Above 4,800
39