Subdividers Ordinance

iii. The noises of safety signals, warning devices, and emergency pressure relief valves. iv. Transient noises of moving sources such as automobiles, trucks, airplanes and railroads. v. At no point along the boundary of a residential district or along an adjacent lot must the sound pressure level of any operation or plant exceed the decibel limits in the octave bands designated as follows. 2. Vibration a. Any industrial operation or activity that causes at any point along the nearest adjacent lot line earth borne vibrations in excess of the limits set forth in Column I of the following Tables is prohibited. b. In addition, any industrial operation or activity that mayt cause at any time and at any point along a residence district boundary line, earth borne vibrations in excess of the limits set forth in the following tables. c. Exceptions: The following uses and activities must be exempt from the vibration level regulations: i. Vibrations not directly under the control of the property user. ii Vibrations emanating from construction and maintenance activities between 7:00 A.M. and 9:00 P.M. Such activities are those that are non-routine operations accessory to the primary activities and that are temporary in nature, or conducted infrequently. iii. Transient vibrations of moving sources such as automobiles, trucks, airplanes and railroads. iv. Vibrations must be expressed as displacement in inches and must be measured with a three- component measuring system approved by the Zoning Administrator. 92 Adopted November 14, 2007