42-413
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 the following table for the district indicated.
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.
MAXIMUM PERMITTED SOUND PRESSURE LEVEL
(in decibels)
District |
|||
Octave Band (cycles per second) |
M1 |
M2 |
M3 |
20 to 75 |
79 |
79 |
80 |
75 to 150 |
74 |
75 |
75 |
150 to 300 |
66 |
68 |
70 |
300 to 600 |
59 |
62 |
64 |
600 to 1,200 |
53 |
56 |
58 |
1,200 to 2,400 |
47 |
51 |
53 |
2,400 to 4,800 |
41 |
47 |
49 |
Above 4,800 |
39 |
44 |
46 |