[Ord. 1973-1, 2/5/1973, § 610]
1. The sound level of any operation (other than the operation of motor
vehicles or other transportation facilities, operations involved in
the construction or demolition of structures, emergency alarm signals
or time signals) shall not exceed the decibel levels in the designated
octave bands stated below. The sound-pressure level shall be measured
with a sound level meter and an octave band analyzer that conforms
to the specifications published by the American Standards Association.
(American Standard Sound Level Meters for Measurement of Noise and
Other Sounds, Z 24.3 - 1944, American Standards Association, Inc.,
New York, New York; and the American Standard Specification for an
Octave-Band Filter Set for the Analysis of Noise and Other Sounds,
Z 24.10 - 1953, American Standards Association, Inc., New York, New
York, shall be used.)
2. Sound-pressure levels shall be measured at the property line upon
which the emission occurs. The maximum permissible sound-pressure
levels for smooth and continuous noise shall be as follows: (All of
the decibel levels stated below shall apply in each case.)
|
Frequency Band
(cycles per second)
|
Maximum Permitted Sound-Pressure Level
(decibels)
|
---|
|
0 to 150
|
67
|
|
150 to 300
|
59
|
|
300 to 600
|
52
|
|
600 to 1,200
|
46
|
|
1,200 to 2,400
|
40
|
|
2,400 to 4,800
|
34
|
|
Above 4,800
|
32
|
3. If the noise is not smooth and continuous or is radiated during sleeping
hours, one or more of the corrections below shall be added to or subtracted
from each of the decibel levels given herein.
|
Type of Operation or Character of Noise
|
Corrections in Decibels
|
---|
|
Noise occurs between the hours of 10:00 p.m. and 7:00 a.m.
|
-3
|
|
Noise occurs less than 5% of any one-hour period.
|
+5
|
|
Noise is of periodic character (hum, scream, etc.) or impulsive
character (hammering, etc.). (In the case of impulsive noise, the
correction shall apply only to the average pressure during an impulse;
and impulse peaks shall not exceed the basic standards given above.)
|
-5
|
[Ord. 1973-1, 2/5/1973, § 610]
1. No smoke shall be emitted from any chimney or other source of visible
gray opacity greater than No. 1 on the Ringlemann Smoke Chart published
by the United States Bureau of Mines, except that smoke of a shade
not darker than No. 2 on the Ringlemann Chart may be emitted for not
more than four minutes in any thirty-minute period.
2. The emission of dust, dirt, fly ash, fumes, vapors or gases which
can cause any damage to human health, animals, vegetation or property
or which can cause any soiling or staining of persons or property
at any point beyond the lot line of the use creating the emission
is herewith prohibited.
3. No emission of liquid or solid particles from any chimney or other
source shall exceed 0.3 grain per cubic foot of the covering gas at
any point beyond the lot line of the use creating the emission. For
measurement of the amount of particles in gases resulting from combustion,
standard correction shall be applied to a stack temperature of 500°
F. and fifty-percent excess air in stack at full load.
[Ord. 1973-1, 2/5/1973, § 610]
No use shall emit odorous gases or other odorous matter in such quantities as to be offensive at any point on or beyond its lot lines. The guide for determining such quantities of offensive odors shall be the most restrictive provisions of Table III (odor thresholds) in Chapter
5, "Air Pollution Abatement Manual," copyright 1951 by Manufacturing Chemists Association, Inc., Washington, D.C.
[Ord. 1973-1, 2/5/1973, § 610]
No use shall produce heat perceptible beyond its lot lines.
[Ord. 1973-1, 2/5/1973, § 610]
No use shall produce a strong dazzling light or a reflection
of a strong dazzling light beyond its lot lines.
[Ord. 1973-1, 2/5/1973, § 610]
No use shall cause earth vibrations or concussions detectable
beyond its lot lines, without the aid of instruments, with the exception
of vibration produced as a result of construction activity.