A. Compliance Required: Any use established in the M-1 Restricted Manufacturing District after the effective date hereof shall be so operated as to comply with the performance standards governing vibration set forth hereinafter. No use lawfully established on the effective date hereof shall be so altered or modified as to conflict with, or further conflict with the performance standards governing vibration established hereinafter.
B. Maximum Limits: In the M-1 Restricted Manufacturing District any industrial operation or activity which shall cause at any time and at any point along the nearest adjacent lot line, earthborne vibrations (other than background vibrations produced by some source not under control of this Title, such as the operation of motor vehicles or other transportation facilities) in excess of the limits set forth in column I is prohibited. In addition, any industrial operation or activity which shall cause at any time and at any point along a residence district boundary line, earthborne vibrations in excess of the limits oat forth in column II is prohibited. Vibration shall be expressed as displacement in inches and shall be measured with a three-component measuring system approved by the Village Manager.
Frequency (cycles per second)
|
I* Displacement (inches)
|
II* Displacement (inches)
|
0 to 10 | .0008 | .0004 |
10 to 20 | .0005 | .0002 |
20 to 30 | .0002 | .0001 |
30 to 40 | .0002 | .0001 |
40 and over | .0001 | .0001 |
*Steady State - Vibrations, for the purpose of this Title, which are continuous, or, in discrete pulses, are more frequent than one hundred (100) per minute. Impact vibration, that is discrete pulses which do not exceed one hundred (100) impulses per minute, shall not cause in excess of twice the displacements stipulated.