The requirements herein are intended to provide a basis for
determining the compatibility of land uses that may produce measurable
adverse environmental effects on their surroundings.
[Amended 7-27-2016 by Ord. No. 16-16]
The performance standards herein shall apply to all permitted
uses in all districts, all conditional uses in all districts and any
other uses, either specified or unspecified.
[Amended 8-23-1999 by Ord. No. 99-13]
A. Maximum sound levels. No operation or activity shall cause or create
noise above the sound pressure level of 75 decibels, as measured at
the boundaries of the nearest residentially zoned lot. Said sound
pressure level shall be modified where applicable by the adjustments
in Table 18 at the locations specified therein.
B. Measurement. A sound-level meter shall be employed to measure the
intensity of sound. The flat network slow meter response of the sound-level
meter shall be used. (American Standards Association SI. 6-1960, Preferred
Frequencies for Acoustical Measurement).
C. Exemptions. The following shall be exempt from noise performance
standards:
(1)
Noises of construction or maintenance activities from 7:00 a.m.
to 7:00 p.m.
(2)
Noises of safety signals, warning devices, and emergency pressure
relief valves.
(3)
Transient noises of moving sources such as transportation vehicles.
(4)
Noises associated with snow plowing, street sweeping, and mosquito
abatement.
(5)
Church bells, chimes, and carillons.
(6)
Other noises not under the direct control of the property user.
Emissions of smoke shall not exceed the maximum permitted smoke units, as defined in §
156-3, and Ringelmann Number ratings in Table 19a.
No operation shall produce direct or indirect illumination greater
than 0.5 footcandle in any residential district.
No heat from operations or processes shall be sensed at any
lot line to the extent of raising the temperature of air or materials
more than 5° F.
[Amended 7-27-2016 by Ord. No. 16-16]
No operation shall be permitted that causes any individual outside
of the lot lines to be exposed to any radiation exceeding the lowest
concentration permitted for the general population by federal and
state laws and regulations in effect as of the day of application
for a certificate of occupancy.