All uses in the “LI” or “PD-I” industrial
districts or in any district except the “HI” district
shall conform in operation, location and construction to the performance
standards herein specified for noise, odorous matter, toxic, noxious
matter, glare, smoke, particulate matter and other air contaminants,
fire and explosive or hazardous matter, vibration, open storage and
glare.
(Ordinance 2019-13 adopted 4/9/19)
(a) Noise.
At no point at the bounding property line of any use in the
“LI” or “PD-I” industrial districts shall
the sound pressure level of any operation or plant exceed the decibel
limits specified in the octave band groups designated in the following
table:
(1) Maximum permissible daytime* octave band - decibel limits at the
bounding property line** in an “LI” or “PD-I”
(industrial or planned development industrial district) or any district
except the “HI” district. Sound levels may be measured
in frequency bands as shown by table A or table B following:
Table A. Preferred Frequencies
|
---|
Center Frequency Cycles per Second
|
Maximum Permitted Soundpressure Level Decibels
|
---|
31.5
|
76
|
63.0
|
74
|
125.0
|
68
|
250.0
|
63
|
500.0
|
57
|
1,000.0
|
52
|
2,000.0
|
45
|
4,000.0
|
38
|
8,000.0
|
32
|
Table B. Octave Band Frequencies
|
---|
Center Frequency Cycles per Second
|
Maximum Permitted Sound Pressure Level Decibels
|
---|
20-75
|
75
|
75-150
|
70
|
150-300
|
64
|
300-600
|
59
|
600-1,200
|
53
|
1,200-2,400
|
47
|
2,400-4,800
|
40
|
4,800-10KC
|
34
|
*
|
Daytime shall refer to the hours between sunrise and sunset
on any given day.
|
**
|
Bounding property line for noise enforcement shall be interpreted
as being at the far side of any street, alley, stream or other permanently
dedicated open space from the noise source when such open space exists
between the property line of the noise source and adjacent property.
When no such open space exists, the common line between two parcels
of property shall be interpreted as the bounding property line.
|
(2) The following corrections shall be made to the table of preferred
frequencies (A) or octave band - decibel limits (B) in determining
compliance with the noise level standards in any district:
Type of Operation or Character of Noise
|
Correction in Decibels
|
---|
Noise source operates less than 20% of any one hour period
|
Plus 5*
|
Noise source operates less than 5% of any one hour period
|
Plus 10*
|
Noise source operates less than 1% of any one hour period
|
Plus 15*
|
Noise of impulsive character (hammering, etc.)
|
Minus 5
|
Noise of periodic character (hum, screech, etc.)
|
Minus 5
|
* Apply one correction only.
|
(3) For the purpose of measuring the intensity and frequency of sound,
the sound level meter, the octave band analyzer and the impact noise
analyzer shall be employed. The flat network and fast meter response
of the sound level meter shall be used. Sounds of short duration which
cannot be accurately measured with the sound level meter shall be
measured with the impact analyze.
Octave band analyzer calibrated in the preferred frequencies
(American Standards Association Sl-6-1960, preferred frequencies for
acoustical measurement) shall be used with table A. Oc-Z-24-1953,
octave filter set) shall be used with table B.
(4) Exemptions - The following uses and activities shall be exempt from
the noise level regulations herein specified.
(A) Noises not directly under control of the property user.
(B) Noises emanating from construction and maintenance activities between
the hours of 7:00 a.m. and 7:00 p.m. (Daylight hours.)
(C) Noises of safety signals, warning devices and emergency pressure
relief valves.
(D) Transient noise of moving sources such as automobiles, trucks and
airplanes.
(b) Smoke
and particulate matter.
No operation or use in an “LI”
or “PD-I” industrial district or any district except the
“HI” district shall cause, create or allow the emission
for more than three minutes in any one hour of air contaminants which
at the emission point or within the property are:
(1) In excess of the levels specified for industrial or similar uses
by the Texas Air Control Board Regulations for the control of air
pollution in the Odessa area as currently published or as later amended.
(2) The open storage and open processing operations, including on-site
transportation movements which are the source of wind or airborne
dust or other particulate matter; or which involves dust or other
particulate air contaminant generating equipment such as used in paint
spraying, grain handling, sand or gravel processing or storage or
sand blasting shall be so conducted that dust and other particulate
matter so generated are not transported across the boundary line of
the tract on which the use is located in concentrations exceeding
four (4) grains per one thousand (1,000) cubic feet of air.
(c) Odorous
matter.
(1) No use shall be located or operated in an “LI” or “PD-I”
industrial district or in any district except the “HI”
district which involves the emission of odorous matter from a source
of operation where the odorous matter exceeds the odor threshold at
the bounding property line or any point beyond the tract on which
such use or operation is located.
(2) The odor threshold as herein set forth shall be determined by observation
by a person or persons. In any case where uncertainty may arise or
where the operator or owner of an odor emitting use may disagree with
the enforcing officer or where specific measurement of odor concentration
is required, the method and procedures as specified by American Society
for Testing Materials, A.S.T.M.D. 1391-57, entitled Standard Method
for Measurement of Odor in Atmospheres shall be used and a copy of
A.S.T.M.D. 1391-57 is hereby incorporated by reference.
(d) Fire
and explosive hazard material.
(1) No use involving the manufacture or storage of compounds or products
which decompose by detonation shall be permitted in an “LI”
or “PD-I” industrial district or any other district except
the “HI” district except that chlorates, nitrates, perchlorates,
phosphorus and similar substances and compounds in small quantities
for use by industry, school laboratories, druggists or wholesalers
may be permitted when approved by the fire department of the City
of Odessa as not presenting a fire or explosion hazard.
(2) The storage and use of all flammable liquids and materials such as
pyroxylin plastics, nitrocellulose film, solvents and petroleum products
shall be permitted only when such storage or use conforms to the standards
and regulations of the ordinances of the City of Odessa pertaining
to fire prevention.
(e) Toxic
and noxious matter.
No operation or use permitted in
an “LI” or “PD-I” industrial district or in
any district except the “HI” district shall emit a concentration
across the bounding property line of the tract on which such operation
or use is located of toxic or noxious matter which will exceed ten
(10) percent of the concentration (exposure) considered as the threshold
limit for an industrial worker as such standards are set forth by
the Texas State Department of Health in threshold limit values occupational
health regulation no. 3, a copy of which is hereby incorporated by
reference and is on file in the office of the building official of
the City of Odessa.
(f) Vibration.
No operation or use in an “LI” or “PD-I”
industrial district or in any district shall at any time create earth
borne vibration which, when measured at the bounding property line
of the source of operation, exceed the limit of displacement set forth
in the following table in the frequency ranges specified.
Frequency Cycles per Second
|
Displacement in Inches
|
---|
.0010
|
0 to 10
|
.0008
|
10 to 20
|
.0005
|
20 to 30
|
.0004
|
30 to 40
|
.0003
|
40 and over
|
(g) Glare.
No use or operation in the “LI” or “PD-I”
industrial district or in any district shall be located or conducted
so as to produce intense glare or direct illumination across the bounding
property line from a visible source of illumination nor shall any
such light be of such intensity as to create a nuisance or detract
from the use and enjoyment of adjacent property.
(h) Open
storage.
No open storage of materials or commodities
shall be permitted in the “LI” district except as an accessory
use to a main use. No open storage operation shall be located in front
of the main building and no storage use in the “LI” or
“PD-I” industrial district shall constitute a wrecking,
junk, or salvage yard except when approved by a specific use permit
as herein provided.
(Ordinance 2019-13 adopted 4/9/19)
(a) Noise.
At no point at the bounding property line of any use in the
“HI” district shall the sound pressure level of any operation
or plant exceed the decibel limits specified in the octave band groups
designated in the following table:
(1) Maximum permissible daytime* octave band - decibel limits at the
bounding property line** in an “HI” (industrial) district.
Sound levels may be measured in frequency bands as shown by table
A or table B following:
Table A. Preferred Frequencies
|
---|
Center Frequency Cycles per Second
|
Maximum Permitted Sound Pressure Level Decibels
|
---|
31.5
|
78
|
63.0
|
76
|
125.0
|
72
|
250.0
|
66
|
500.0
|
60
|
1,000.0
|
55
|
2,000.0
|
50
|
4,000.0
|
44
|
8,000.0
|
38
|
Table B. Octave Band Frequencies
|
---|
Center Frequency Cycles per Second
|
Maximum Permitted Sound Pressure Level Decibels
|
---|
20-75
|
80
|
75-150
|
74
|
150-300
|
70
|
300-600
|
65
|
600-1,200
|
60
|
1,200-2,400
|
57
|
2,400-4,800
|
54
|
4,800-10KC
|
50
|
*
|
Daytime shall refer to the hours between sunrise and sunset
on any given day.
|
**
|
Bounding property line for noise enforcement shall be interpreted
as being at the far side of any street, alley, stream or other permanently
dedicated open space from the noise source when such open space exists
between the property line of the noise source and adjacent property.
When no such open space exists, the common line between two parcels
of property shall be interpreted as the bounding property line.
|
(2) The following corrections shall be made to the table of preferred
frequencies (A) or octave band - decibel limits (B) in determining
compliance with the noise level standards in any district:
Type of Operation or Character of Noise
|
Correction in Decibels
|
---|
Noise source operates less than 20% of any one hour period
|
Plus 5*
|
Noise source operates less than 5% of any one hour period
|
Plus 10*
|
Noise source operates less than 1% of any one hour period
|
Plus 15*
|
Noise of impulsive character (hammering, etc.)
|
Minus 5
|
Noise of periodic character (hum, screech, etc.)
|
Minus 5
|
* Apply one correction only.
|
(3) For the purpose of measuring the intensity and frequency of sound,
the south level meter, the octave band analyzer and the impact noise
analyzer shall be employed. The flat network and fast meter response
of the sound level meter shall be used. Sounds of short duration which
cannot be accurately measured with the sound level meter shall be
measured with the impact analyzer.
Octave band analyzer calibrated in the preferred frequencies
(American Standards Association Sl-6-1960, preferred frequencies for
Acoustical Measurement) shall be used with table A. Octave Bank Analyzers
calibrated with pre-1960 octave bands (American Standards Association
Z-24-1953, Octave Filter Set) shall be used with table B.
(4) Exemptions - The following uses and activities shall be exempt from
the noise level regulations herein specified.
(A) Noises not directly under control of the property user.
(B) Noises emanating from construction and maintenance activities between
the hours of 7:00 a.m. and 7:00 p.m. (Daylight hours.)
(C) Noises of safety signals, warning devices and emergency pressure
relief valves.
(D) Transient noise of moving sources such as automobiles, trucks and
airplanes.
(b) Smoke
and particulate matter.
No operation or use in an “HI”
industrial district or any district shall cause, create or allow the
emission for more than three minutes in any one hour of air contaminants
which at the emission point or within the property are:
(1) In excess of the levels specified for industrial or similar uses
by The Texas Air Control Board Regulations for the control of air
pollution in the Odessa area as currently published or later amended.
(2) The open storage and open processing operations, including on-site
transportation movements which are the source of wind or airborne
dust or other particulate matter; or which involves dust or other
particulate air contaminant generating equipment such as used in paint
spraying, grain handling, sand or gravel processing or storage or
sand blasting shall be so conducted that dust and other particulate
matter so generated are not transported across the boundary line of
the tract on which the use is located in concentrations exceeding
four (4) grains per one thousand (1,000) cubic feet of air.
(c) Odorous
matter.
(1) No use shall be located or operated in an “HI” industrial
district which involves the emission of odorous matter from a source
of operation where the odorous matter exceeds a concentration at the
bounding property line or any point beyond the tract on which such
use or operation is located which when diluted with an equal volume
of odor free air exceeds the odor threshold (2 odor units).
(2) The odor threshold as herein set forth shall be determined by observation
by a person or persons. In any case, where uncertainty may arise or
where the operator or owner of an odor emitting use may disagree with
the enforcing officer or where specific measurement of odor concentration
is required, the method and procedures as specified by American Society
for Testing Materials, A.S.T.M.D. 1391-57 entitled Standard Method
for Measurement of Odor in Atmospheres shall be used and a copy of
A.S.T.M.D. 1391-57 is hereby incorporated by reference.
(d) Fire
and explosive hazard material.
(1) No use involving the manufacture or storage of compounds or products
which decompose by detonation shall be permitted in an “HI”
industrial district except when the methods of storage or manufacture
are approved by the fire department of the City of Odessa as not presenting
a fire or explosive hazard to adjacent property.
(2) The storage and use of all flammable liquids and materials such as
pyroxylin plastics, nitrocellulose film, solvents and petroleum products
shall be permitted only when such storage or use conforms to the standards
and regulations of the ordinances of the City of Odessa pertaining
to fire prevention.
(e) Toxic
and noxious matter.
No operation or use permitted in
an “HI” industrial district or in any district shall emit
a concentration across the bounding property line of the tract on
which such operation or use is located of toxic or noxious matter
which will exceed ten (10) percent of the concentration (exposure)
considered as the threshold limit for an industrial worker as such
standards are set forth by The Texas State Department of Health in
threshold limit values occupational health regulation No. 3, a copy
of which is hereby incorporated by reference and is on file in the
office of the building official of the City of Odessa.
(f) Vibration.
No operation or use in an “HI” industrial district
or any district shall at any time create earth born vibration which,
when measured at the bounding property line of the source of operation,
exceed the limit of displacement set forth in the following table
in the frequency ranges specified.
Frequency Cycles per Second
|
Displacement in Inches
|
---|
0 to 10
|
.0020
|
10 to 20
|
.0016
|
20 to 30
|
.0010
|
30 to 40
|
.0006
|
40 and Over
|
.0005
|
(g) Glare.
No use or operation in the “HI” industrial district
or in any district shall be located or conducted so as to produce
intense glare or direct illumination across the bounding property
line from a visible source of illumination nor shall any such light
be of such intensity as to create a nuisance or detract from the use
and enjoyment of adjacent property.
(h) Open
storage.
Open storage of material and commodities is
permitted in the “HI” industrial district except that
no such operation shall extend into the public right-of-way of any
street or alley.
(Ordinance 2019-13 adopted 4/9/19)