250-RICR-120-05-22
250-RICR-120-05-22. Air Pollution Control Regulation No. 22 - Air Toxics (version Amendment, 10/09/2008 to 01/10/2019)
STATE OF RHODE ISLAND AND PROVIDENCE PLANTATIONS
DEPARTMENT OF ENVIRONMENTAL MANAGEMENT
OFFICE OF AIR RESOURCES
AIR POLLUTION CONTROL REGULATION NO. 22
AIR TOXICS
Effective 28 March 1988
Last Amended 9 October 2008
AUTHORITY: These regulations are authorized pursuant to R.I. Gen. Laws § 42-
17.1-2(s) and 23-23, as amended, and have been promulgated pursuant to the
procedures set forth in the R.I. Administrative Procedures Act, R.I. Gen. Laws Chapter
42-35.
RHODE ISLAND DEPARTMENT OF ENVIRONMENTAL MANAGEMENT
OFFICE OF AIR RESOURCES
AIR POLLUTION CONTROL REGULATION NO. 22
AIR TOXICS
TABLE OF CONTENTS
22.1
Definitions.........................................................................................................................1
22.2
Applicability and Exemptions............................................................................................3
22.3
Requirements for Permits to Construct, Install or Modify...................................................5
22.4
Requirement for Registration .............................................................................................6
22.5
Requirement for Air Toxics Operating Permits ..................................................................7
22.6
General Provisions..........................................................................................................11
Table I Acceptable Ambient Levels (AALs) (μg/m3) ...............................................13
Table II Acceptable Ambient Levels (AALs) with LAER (μg/m3)............................21
Table III Minimum Quantities (pounds/year)..............................................................29
Page 1 of 35
RHODE ISLAND DEPARTMENT OF ENVIRONMENTAL MANAGEMENT
OFFICE OF AIR RESOURCES
AIR POLLUTION CONTROL REGULATION NO. 22
AIR TOXICS
22.1
Definitions
Unless otherwise expressly defined in this section, the terms used in this regulation
shall be defined by reference to the Rhode Island Air Pollution Control General
Definitions Regulation. As used in this regulation, the following terms shall, where
the context permits, be construed as follows:
22.1.1
"Acceptable Ambient Level" is the maximum ambient air concentration
of a listed toxic air contaminant that may be contributed by a stationary
source, at or beyond that facility's property line, as delineated in Tables I
and II of this regulation, averaged over the time period specified in those
tables.
22.1.2 “Carcinogen” means a listed toxic substance that, according to Table B
of the Rhode Island Air Toxics Guideline, has been classified as a Class
A, B1, B2, B2-C or C carcinogen by the EPA or, if the carcinogenicity of
a substance has not been characterized by the EPA, has been classified
by the International Agency for Research on Cancer as a Class 1, 2A or
2B carcinogen or by the National Toxicology Program (NTP) as Known
or Reasonably Expected to be a Human Carcinogen (indicated as K and
R in Table B).
22.1.3 "Construction" means any physical change or change in the method of
operation (including fabricating, erecting, locating, modification or
demolition of an emissions unit) which would result in a change in actual
emissions.
22.1.4 "Existing Source" means a stationary source which is in existence on the
effective date of this Regulation or, for a listed toxic substance that was
added to Table I in a subsequent amendment of this regulation, a stationary
source that was in existence on the effective date of that amendment.
22.1.5 “Imminent threat” means a condition in which the emissions of one or
more listed toxic air contaminants from a facility can result in ambient air
levels that, if not abated in a reasonable time period, as determined by the
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Director, have the potential to cause serious health effects to members of the
public.
22.1.6 “Impact” means the ground level concentration of a pollutant resulting from
emissions of that pollutant from a facility. Impact does not include
background ambient air concentrations of the pollutant or concentrations of
the pollutant resulting from emissions from other facilities.
22.1.7 "Listed Toxic Air Contaminant" means any listed toxic substance emitted
to the atmosphere as dust, fume, gas, mist, smoke, vapor, or soot.
22.1.8 "Listed Toxic Substance" means any substance that is listed in Table I of
this regulation.
22.1.9 “Major fuel-burning modification” means any physical change or change
in the method of operation of a major fuel-burning source that would result
in a net emission increase, as defined in Rhode Island Air Pollution Control
Regulation No. 9, of air pollutants from the combustion of fuel oil, propane,
natural gas, or a combination of those fuels equal to or in excess of:
(a)
15 tons per year of particulate matter less than 2.5 microns in
diameter,
(b)
25 tons per year of nitrogen oxides or volatile organic compounds,
(c)
40 tons per year of sulfur dioxide, or
(d)
100 tons per year of carbon monoxide.
22.1.10 “Major fuel-burning source” means any stationary source that emits or
has the potential to emit, as defined in Rhode Island Air Pollution Control
Regulation No. 9, air pollutants from the combustion of fuel oil, propane,
natural gas, or a combination of those fuels equal to or in excess of:
(a)
50 tons per year of nitrogen oxides or volatile organic compounds or
(b)
100 tons per year of carbon monoxide, sulfur dioxide or particulate
matter less than 2.5 microns in diameter.
22.1.11 “Modification” means any physical or operational change to any
machine, equipment, device, article or facility which may result in an
increased emission rate to the atmosphere of any air contaminant. The
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following shall not be considered a modification:
(a)
Routine maintenance, repair, and replacement of any machine,
equipment, device, article or facility or parts;
(b)
Increase in production rate of any machine, equipment, device,
article or facility based solely upon the capabilities of existing
process equipment;
(c)
Increase in hours of operation up to the maximum hours allowed
in any federally enforceable air pollution control permit or air
toxics operating permit; and
(d)
Use of an alternative fuel or raw material if the machine,
equipment, device, article or facility was designed and permitted
to accommodate that alternative use.
22.1.12 "Perchloroethylene Dry Cleaning Facility" means a facility engaged in
the cleaning of clothing, garments, textiles, fabrics, leather goods and/or
similar items by means of one or more washes in perchloroethylene,
extraction of excess perchloroethylene by spinning, and drying by tumbling
in an airstream. The facility includes, but is not limited to, any washer,
dryer, filter and purification system, waste disposal system, holding tank,
pump, air pollution control equipment and attendant piping, valves and
stacks.
22.1.13 “Reformulation” means the elimination or reduction of the use of one or
more listed toxic substances by replacement with one or more, less toxic
substances.
22.2 Applicability and Exemptions
22.2.1
Applicability
The provisions of this regulation shall apply to any stationary source that
emits a listed toxic air contaminant, unless exempted below.
22.2.2
Exemptions
The following shall be exempt from the provisions of this regulation:
(a)
The application of any pesticide or herbicide regulated under
authority of the Federal Insecticide, Fungicide, Rodenticide Act (86
Page 4 of 35
statute 973 et seq, as amended) or the Rhode Island Pesticide
Control Act (23-25-1, et seq), with the exception of the use of
ethylene oxide for fumigation or sterilization, shall be exempted
from this regulation. It shall be the responsibility of the owner or
operator of a source claiming to be exempt from the provisions of
this regulation to demonstrate that the facility's use of a listed
substance is regulated under the above-mentioned laws,
(b)
Gasoline filling stations;
(c)
Fuel burning equipment where the emission of listed toxic air
contaminants is solely from the combustion of fuel oil, propane or
natural gas; except that new major fuel-burning sources and major
fuel-burning modifications that begin operation after April 27, 2004
shall not be exempt from this regulation;
(d)
Perchloroethylene emissions from perchloroethylene dry cleaning
facilities;
(e)
Sodium hydroxide emissions generated by the addition of sodium
hydroxide to an air pollution control system or to a water pollution
control/pretreatment system according to its design specifications;
(f)
Asbestos abatement projects subject to the Rhode Island Department
of Health “Rules and Regulations for Asbestos Control” (R23-24.5-
ASB);
(g)
Lead paint hazard reduction projects and lead paint hazard control
projects subject to the Rhode Island Department of Health “Rules
and Regulations for Lead Paint Poisoning Prevention” (R23-24.6-
PB);
(h)
Lead paint removal operations subject to Rhode Island Department
of Environmental Management Air Pollution Control Regulation
No. 24, “Removal of Lead Based Paint from Exterior Surfaces;.” and
(i)
Organic solvent cleaning operations subject to Rhode Island
Department of Environmental Management Air Pollution Regulation
No. 36, “Control of Emissions from Organic Solvent Cleaning,”
provided that facility-wide emissions of listed toxic air contaminants
from said operations do not exceed 2000 pounds in any calendar
year.
Page 5 of 35
22.3 Requirements for Permits to Construct, Install or Modify
22.3.1
No person shall construct, install, or modify or cause construction,
installation, or modification of any stationary source which has the potential
to increase emissions of a listed toxic air contaminant by an amount greater
than the Minimum Quantity for that contaminant specified in Table III of
this regulation without first obtaining an approved permit to construct,
install or modify from the Director. Organic solvent cleaning machines are
exempt from this requirement, provided that the machine meets the
applicable requirements of Rhode Island Air Pollution Control Regulation
No. 36 and that the owner or operator of that machine submits a
Compliance Notification Report that contains the information in subsection
36.11.2 of Rhode Island Air Pollution Control Regulation No.36 prior to
construction, installation or modification of that machine
22.3.2
All permits to construct, install or modify shall be issued in accordance with
the provisions and limitations of Rhode Island Air Pollution Control
Regulation No. 9.
22.3.3
Except as specified in Subsection 22.3.4, no permit to construct, install or
modify will be issued for a stationary source subject to this regulation
unless it can be demonstrated, in accordance with the procedures outlined in
the Rhode Island Guideline for Air Quality Modeling for Air Toxics
Sources, that:
(a)
The emissions of any listed toxic air contaminant from the proposed
facility shall not cause an impact, at or beyond the property line of
the facility, which exceeds the Acceptable Ambient Levels for that
contaminant specified in Table I; or
(b)
The proposed facility is designed to achieve LAER and emissions of
any listed toxic air contaminant from the facility shall not cause an
impact, at or beyond the property line of the facility, which exceeds
the Acceptable Ambient Levels with LAER for that contaminant
specified in Table II.
22.3.4
The Director may, at his discretion, modify the modeling analysis
requirements specified in Subsection 22.3.3 by:
(a)
Allowing the owner or operator to exclude from the analysis impacts
from the facility in an area that is not accessible to the public,
provided that the owner or operator first demonstrates to the Director
that public access to that area is precluded; or
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(b)
Allowing the owner or operator to use an adjusted annual or 24-hour
average Acceptable Ambient Level to determine the acceptability of
impacts in an area, provided that the owner or operator first
demonstrates to the Director that land use or other factors limit the
potential duration of public exposure to the contaminant in that area;
or
(c)
Requiring the owner or operator to evaluate one-hour and 24-hour
average impacts in areas of the facility’s property to which members
of the public have unrestricted access.
22.4 Requirement for Registration
22.4.1
The owner or operator of a stationary source which emits a listed toxic air
contaminant in an amount greater than the Minimum Quantity for that
substance specified in Table III during a calendar year shall register in
writing with the Department on or before 15 April of the following calendar
year. The registration shall be signed by the owner or operator of the
stationary source. An annual emissions summary submitted to comply with
sections 14.2 or 14.3 of Rhode Island Air Pollution Control Regulation No.
14 shall satisfy this requirement provided that it includes all of the
information listed in section 22.4.2.
22.4.2
Registrations shall include, at a minimum, the following information:
(a)
The name and address of the facility;
(b)
The name and telephone number of the owner or operator of the
facility and of a technical contact person for the facility; and
(c)
For each of the listed toxic air contaminants emitted by the facility in
an amount greater than the Minimum Quantity for that substance
during the previous calendar year:
(1)
The name of the substance;
(2)
The process that emitted the substance;
(3)
The amount of the substance used at the facility during the
previous calendar year,
(4)
The amount of the substance emitted by the facility during the
previous calendar year, and
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(5)
The method used to calculate emissions from the facility.
22.4.3
Any listed toxic substance that is present in a mixture shall be included
in the registration provided that:
(a)
The substance is listed on the Material Safety Data Sheet (MSDS)
for that mixture prepared pursuant to the OSHA Hazard
Communication Standard (29CFR1910.1200). If the chemical
manufacturer claims on the MSDS that the content of the mixture
is proprietary information, it is the responsibility of the owner or
the operator of the facility using that mixture to determine
whether the mixture contains listed toxic substances. A
certification from the manufacturer shall be deemed an acceptable
determination of whether the mixture contains listed toxic
substances; or
(b)
For a mixture which does not have a MSDS, the concentration of
the listed toxic substance in the mixture is at least 1%. A listed
toxic substances that is a carcinogen, as defined in this regulation,
shall be included in the registration if the concentration of that
substance is at least 0.1% of the mixture.
22.5 Requirement for Air Toxics Operating Permits
22.5.1
No person shall operate a facility subject to this regulation if:
(a)
An application for an Air Toxics Operating Permit (ATOP) for that
facility is not completed in accordance with the provisions of
Subsection 22.5.2 upon notification from the Director; or
(b)
An ATOP for the facility is denied, following review of the
Department; or
(c)
An ATOP or provisional ATOP for the facility is revoked by the
Director.
22.5.2
The owner or operator of a facility subject to this regulation shall file a
completed ATOP application with the Department on forms furnished by
the Department within 60 days of written notice from the Director. The
Department shall allow a facility additional time to submit the application if
the owner or operator demonstrates to the satisfaction of the Department
that such an extension is necessary. The Department shall prioritize
facilities for requiring the filing of ATOP applications using the procedures
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specified in the Rhode Island Air Toxics Guideline. ATOP application
forms shall be signed by:
(a)
For a corporation or limited liability company (LLC): a president,
secretary, treasurer or vice president of the corporation or member of
the LLC in charge of a principal business function, or any other
person who performs similar policy or decision-making functions for
the corporation, or a duly authorized representative of such person if
the representative is responsible for the overall operation of one or
more manufacturing, production or operation facilities applying for
the permit;
(b)
For a partnership or sole proprietorship: a general partner or the
proprietor, respectively;
(c)
For a municipality, State, Federal or other public agency: either a
principal executive officer or ranking elected official. For the
purposes of this regulation, a principal executive officer of a Federal
agency includes the chief executive officer having responsibility for
the overall operations of a principal geographic unit of the agency.
22.5.3
The Director shall issue an ATOP to a facility if, after review of the
application, associated inspection reports, emission test reports, and the
results of a modeling analysis conducted using the procedures specified in
the Rhode Island Guideline for Air Quality Modeling for Air Toxics
Sources, it is determined that:
(a)
Except as provided in Subsection 22.5.4, the emissions of any listed
toxic air contaminant from that facility shall not cause an impact at
or beyond the property line of the facility which exceeds the
Acceptable Ambient Levels for that substance specified in Table I;
or
(b)
LAER has been achieved for emissions of a listed toxic air
contaminant and, except as provided in Subsection 22.5.4, emissions
of that contaminant from the facility will not cause an impact at or
beyond the property line of the facility which exceeds the
Acceptable Ambient Levels with LAER for that substance specified
in Table II.
22.5.4
The Director may, at his discretion, modify the modeling analysis
requirements specified in Subsection 22.5.3 by:
Page 9 of 35
(a)
Allowing the owner or operator to exclude from the analysis impacts
from the facility in an area that is not accessible to the public,
provided that the owner or operator first demonstrates to the Director
that public access to that area is precluded; or
(b)
Allowing the owner or operator to use an adjusted annual or 24-hour
average Acceptable Ambient Level to determine the acceptability of
impacts in an area, provided that the owner or operator first
demonstrates to the Director that land use or other factors limit the
potential duration of public exposure to the contaminant in that area;
or
(c)
Requiring the owner or operator to evaluate one-hour and 24-hour
average impacts in areas of the facility’s property to which members
of the public have unrestricted access.
22.5.5
If, upon review of an ATOP application and associated emissions test
reports, inspection reports, and modeling results, it is determined that the
facility does not meet the requirements in subsection 22.5.3, the Director
may issue a provisional ATOP to the facility which includes the following
requirements:
(a)
The facility must be in compliance with the provisions of Subsection
22.5.3 within 18 months of the date of issuance of the provisional
ATOP or another reasonable time period as specified by the
Director. An additional six months may be allowed if the facility
notifies the Department within 30 days of issuance of the provisional
ATOP that reformulation will be attempted as a part of a strategy to
reduce emissions; and
(b)
The Director may allow a longer period of compliance if product or
process substitutions necessary to achieve compliance with
Acceptable Ambient Levels must first be approved by another
governmental agency. Interim emission reduction measures may be
required in such circumstances; and
(c)
The facility must comply with any milestones specified in its
provisional ATOP by the dates specified in that document.
Quarterly reports must be submitted to the Department certifying
that the milestones have been met by the specified dates and
delineating any other progress made towards compliance with
Subsection 22.5.3.
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22.5.6
If, after the review of an ATOP application and associated inspection
reports, emission test reports, and modeling results, it is determined that
emissions from a facility of one or more listed toxic air contaminants
present an imminent threat to the surrounding community, the Director may
deny issuance of an ATOP. The Director shall notify the owner or operator
of the facility of the specific reasons (including relevant supporting data)
that the ATOP was denied.
22.5.7
The Director may impose reasonable conditions in an ATOP, including but
not limited to:
(a)
Limitations on hours of operation;
(b)
Limitations on allowable emissions;
(c)
Operation and maintenance criteria that are necessary to ensure that
the allowable emissions limitations are not exceeded;
(d)
Installation and/or operation of instrumentation to monitor and
record emission data or related parameters;
(e)
Conditions to ensure that emissions from the facility do not cause
ground level concentrations that exceed Acceptable Ambient Levels;
(f)
Conditions to ensure compliance with State and Federal air pollution
control rules and regulations applicable to processes at the facility
that emit listed air toxic contaminants; and
(g)
Periodic emissions testing of the source of the air toxics emissions.
22.5.8
ATOPs initially shall be issued for a five year period. An ATOP renewal
application shall be filed with the Director no later than 120 days before
the expiration date of the ATOP. If a complete renewal application is
filed by that date, the facility may continue to operate under the
conditions specified in the current ATOP until a renewed ATOP is
issued or denied by the Director. An ATOP shall be renewed upon
expiration for an additional five year period provided that, after review of
the renewal application and associated materials, it is determined that the
facility meets the requirements of Subsection 22.5.3.
22.5.9
Any ATOP may be suspended, revoked or amended by the Director at
any time upon a showing that the permit holder has failed to comply with
this regulation or the terms and conditions of the ATOP or that the
continued operation of the permitted source constitutes a threat to the
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health and safety of the public or a threat to the environment. In any
action to suspend, revoke or amend an ATOP, the Director shall notify
the permit holder by mail of the facts, conduct or violation which
warrant this action. The notice shall state that the permit holder may
request a hearing on the action within 30 days of receipt of the notice. If
the Department demonstrates that public health, safety, or welfare
imperatively requires emergency action, the Director may order
summary suspension of the ATOP pending the proceedings for
suspension, revocation or amendment.
22.5.10 The holder of an ATOP or provisional ATOP must notify the Director in
writing prior to transferring the ATOP or provisional ATOP to another
party. Each new owner or operator or holder of the permit shall be
responsible for complying with all conditions specified in the ATOP or
provisional ATOP.
22.6 General Provisions
22.6.1
Purpose
The purpose of this regulation is to limit emissions of toxic air contaminants from
stationary sources.
22.6.2
Authority
These regulations are authorized pursuant to R.I. Gen. Laws § 42-17.1-2(s) and
23-23, as amended, and have been promulgated pursuant to the procedures set
forth in the R.I. Administrative Procedures Act, R.I. Gen. Laws Chapter 42-35
22.6.3
Application
The terms and provisions of this regulation shall be liberally construed to permit
the Department to effectuate the purposes of state law, goals and policies.
22.6.4
Severability
If any provision of this regulation or the application thereof to any person or
circumstances, is held invalid by a court of competent jurisdiction, the validity of
the remainder of the regulation shall not be affected thereby.
22.6.5
Effective Date
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The foregoing Regulation, “Air Toxics,” as amended, after due notice, is hereby
adopted and filed with the Secretary of State this 19th day of September, 2008 to
become effective twenty days thereafter, in accordance with the provisions of
Chapter 23-23, 42-35, 42-17.1, 42-17.of the General Laws of Rhode Island of 1956,
as amended.
___________________________________________________________
W. Michael Sullivan, PhD., Director
Department of Environmental Management
Notice Given on:
July 8, 2008
Public Hearing held:
August 8, 2008
Filing Date:
September 19, 2008
Effective Date:
October 9, 2008
Page 13 of 35
.
Table I Acceptable Ambient Levels (AALs) (μg/m3)
CHEMICAL NAME
CAS #
1 hour
24 hour
Annual
Acetaldehyde
75070
0.5
Acetamide
60355
0.05
Acetone
67641
60,000
30,000
Acetonitrile
75058
60
Acetophenone
98862
300
2-Acetylaminofluorene
53963
0.0008
Acrolein
107028
0.2
0.02
Acrylamide
79061
0.0008
Acrylic Acid
79107
6,000
1
Acrylonitrile
107131
200
0.01
Aldrin
309002
7
0. 1
0.00002
Allyl Chloride
107051
1
2-Aminoanthraquinone
117793
0.1
4-Aminobiphenyl
92671
0.0002
Ammonia
7664417
1,000
100
70
Aniline
62533
1
0.6
o-Anisidine
90040
0.02
Antimony & compounds, except trioxidea
0.2
Antimony trioxide
1309644
0.2
0.02
Aramite
140578
0.1
Arsenic & compoundsa (inorganic)
0.2
0.0002
Arsine
7784421
200
0.05
Asbestos
1332214
4b
Azobenzene
103333
0.03
Barium
7440393
700
Benzene
71432
30
20
0.1
Benzidine
92875
0.00002
Benzoic acid
65850
10,000
Benzotrichloride
98077
0.0003
Benzyl chloride
100447
200
0.02
Beryllium & compoundsa
0.02
0.0004
Biphenyl
92524
200
Bis (chloromethyl) ether
542881
1
0.00002
Bis (2-ethylhexyl) phthalate (DEHP)
117817
70
0.4
Boron and borates
10
Bromates (including Potassium bromate)
10
0.007
Bromine & compoundsj
(except Hydrogen bromide & Bromates)
2
Bromodichloromethane
75274
100
70
0.03
Page 14 of 35
Table I Acceptable Ambient Levels (AALs) (μg/m3)
CHEMICAL NAME
CAS #
1 hour
24 hour
Annual
Bromoform
75252
2,000
70
0.9
1,3-Butadiene
106990
0.03
Butyl benzyl phthalate
85687
700
Cadmium & compoundsa
0.1
0.0006
Calcium cyanamide
156627
1
Captan
133062
500
1
Carbaryl
63252
300
Carbon disulfide
75150
6,000
700
Carbon tetrachloride
56235
2,000
200
0.07
Carbonyl sulfide
463581
200
30
Catechol
120809
6,000
5
Chloramben
133904
50
Chlordane
57749
0.7
0.001
Chlorinated paraffins
(avg length C12- C13, 60% chlorine)
108171262
0.04
Chlorine
7782505
200
6
0.1
Chlorine dioxide
10049044
3
0.2
Chloroacetic acid
79118
30
7
2-Chloroacetophenone
532274
0.03
4-Chloroaniline
106478
10
1
Chlorobenzene
108907
1,000
Chlorobenzilate
510156
70
0.7
1-Chloro-1,1-difluoroethane (CFC 142B)
75683
50,000
Chlorodifluoromethane (HCFC-22)
75456
50,000
Chloroform
67663
100i
0.2
Chloromethyl methyl ether
107302
0.001
2-Chlorophenol
95578
20
4-Chloro-o-phenylenediamine
95830
0.2
Chloropicrin
76062
30
0.4
Chloroprene
126998
1
p-Chloro-o-toluidine
95692
0.01
Chromium III & compoundsa (insoluble salts)
5,000
Chromium VI & compoundsa- mists and aerosols
0.008
0.00008
Chromium VI & compoundsa – solid particulate
1
0.00008
Cobalt & compoundsa
0.001
Coke oven emissions
8007452
0.002
Copper & compoundsa (except Copper cyanide)
100
2
p-Cresidine
120718
0.02
Cresols/Cresylic acid, isomers and mixtures
(Methylphenols)
1319773
600
Page 15 of 35
Table I Acceptable Ambient Levels (AALs) (μg/m3)
CHEMICAL NAME
CAS #
1 hour
24 hour
Annual
Cumene
98828
400
Cupferron
135206
0.02
Cyanide & compounds (inorganic)j,
except Hydrogen cyanide
300
9
Cyclohexane
110827
6,000
2,4-Diaminoanisole
615054
0.2
2,4-Diaminotoluene
95807
0.0009
Diazomethane
334883
0.8
Dibromochloromethane
124481
300
70
1,2-Dibromo-3-chloropropane
96128
0.2
0.0005
Dibutylphthalate
84742
2,000
300
1,2-Dichlorobenzene
95501
2000
300
1,4-Dichlorobenzene (p-Dichlorobenzene)
106467
12,000
800
0.09
3,3'-Dichlorobenzidene
91941
0.003
Dichloro diphenyl dichloroethylene (DDE)
3547044
0.01
cis- 1,2-Dichloroethene
156592
3,000
1,000
trans- 1,2-Dichloroethene
156605
800
70
Dichloroethyl ether (Bis (chloroethyl) ether)
111444
100
0.003
2,4-Dichlorophenoxyacetic acid
94757
30
1,3-Dichloropropene
542756
20
0.2
Dichlorvos
62737
20
3
0.01
Dieldrin
60571
0. 2
0.0002
Diethanolamine
111422
3
Diethyl sulfate
64675
0.003
1,1-Difluoroethane (HCFC 152a)
75376
40,000
3,3'-Dimethoxybenzidine
119904
0.0008
p-Dimethyl aminoazobenzene
60177
0.0008
n,n-Dimethyl aniline
121697
7
3,3'-Dimethyl benzidine
119937
0.0002
Dimethyl carbamoyl chloride
79447
0.0003
Dimethyl formamide
68122
30
1,1-Dimethyl hyrazine
57147
0.5
0.001
1,2-Dimethyl hyrazine
540738
3
0.000006
2,4-Dimethylphenol
105679
70
Dimethyl phthalate
131113
10
Dimethyl sulfate
77781
0.0002
4,6-Dinitro-o-cresol
534521
10
2,4-Dinitrophenol
51285
30
7
2,4-Dinitrotoluene
121142
200
7
0.01
1,4-Dioxane (1,4-Diethyleneoxide)
123911
3,000
0.1
Page 16 of 35
Table I Acceptable Ambient Levels (AALs) (μg/m3)
CHEMICAL NAME
CAS #
1 hour
24 hour
Annual
1,2-Diphenylhydrazine (Hydrazobenzene)
122667
0.005
Epichlorohydrin
106898
1,000
0.8
1,2-Epoxybutane
106887
2
Ethyl acrylate
140885
0.5
Ethyl benzene
100414
40,000
3,000
1,000
Ethyl carbamate (Urethane)
51796
0.003
Ethyl chloride (Chloroethane)
75003
40,000
10,000
Ethylene dibromide (Dibromoethane)
106934
9
0.02
Ethylene dichloride (1,2-Dichloroethane)
107062
0.04
Ethylene glycol
107211
2,000
400
Ethylene glycol monobutyl ether
111762
10,000
1,000
Ethylene glycol monoethyl ether
110805
400
200
70
Ethylene glycol monoethyl ether acetate
111159
100
Ethylene glycol monomethyl ether
109864
90
20
Ethylene glycol monomethyl ether acetate
110496
90
Ethylene imine (Aziridine)
151564
0.00005
Ethylene oxide
75218
200
0.01
Ethylene thiourea
96457
0.08
Ethylidene dichloride (1,1-Dichloroethane)
75343
0.6
Fluorides & compoundsj, including Hydrogen
fluoride
20
3
Formaldehyde
50000
50
40
0.08
Glutaraldehyde
111308
0.08
Heptachlor
76448
2
0.4
0.00008
Hexachlorobenzene
118741
30
0.4
0.0002
Hexachlorobutadiene
87683
0. 7
Hexachlorocyclohexanes, technical grade & mixed
isomers
608731
0.002
alpha-Hexachlorocyclohexane
319846
0.0006
beta-Hexachlorocyclohexane
319857
200
2
0.002
gamma-Hexachlorocyclohexance (Lindane)
58899
10
0.04
0.003
Hexachlorocyclopentadiene
77474
100
0.2
Hexachloroethane
67721
60,000
0.3
Hexamethylene-1,6-diisocyanate
822060
0.2
0.03
Hexamethylphosphoramide
680319
0.00005
Hexane
110543
700
Hydrazine
302012
5
0.0002
Hydrochloric acid (Hydrogen chloride)
7647010
2,000
9
Hydrogen bromide
10035106
20
Hydrogen cyanide
74908
300
3
Page 17 of 35
Table I Acceptable Ambient Levels (AALs) (μg/m3)
CHEMICAL NAME
CAS #
1 hour
24 hour
Annual
Hydrogen sulfide
7783064
40
30
10
Hydroquinone
123319
1,000
5
Isophorone
78591
700
Isopropanol
67630
3,000
Lead & compoundsa, inorganic
0.008
Lead – tetraethyl lead
78002
0. 0003
Maleic anhydride
108316
10
0.7
Manganese & compoundsa
0.05
0.04
Mercury & compounds. a – elemental & inorganic
2
0.3
0.009
Mercury - methylmercury
22967926
0. 3
0. 003
Methanol
67561
30,000
4,000
Methoxychlor
72435
20
Methyl bromide (Bromomethane)
74839
200
5
Methyl chloride (Chloromethane)
74873
1,000
400
90
Methyl chloroform (1,1,1-Trichloroethane)
71556
9,000
6,000
5,000
4,4-Methylene bis (2-chloroaniline)
101144
0.002
Methylene chloride (Dichloromethane)
75092
2,000
1,000
2
4,4-Methylenedianiline
101779
700
300
0.002
Methylene diphenyl diisocyanate
101688
0.6
Methyl ethyl ketone (2-Butanone)
78933
10,000
5,000
Methyl hydrazine
60344
0.0004
Methyl iodide (Iodomethane)
74884
30
Methyl isobutyl ketone (Hexanone)
108101
3,000
Methyl isocyanate
624839
1
Methyl methacrylate
80626
700
Methyl tert butyl ether (MTBE)
1634044
7,000
3,000
Michler's ketone
(4,4'-Bis (dimethylamino) benzophenone)
90948
0.004
Fine mineral fibersc
20
Molybdenum & compoundsa
20
Naphthalene
91203
3
0.03
Nickel and compoundsa, except Nickel subsulfide
6
0.2
0.004
Nickel subsulfide
12035722
6
0.2
0.002
Nitric acid
7697372
90
Nitrobenzene
98953
2
4-Nitrobiphenyl
92933
0.00002
4-Nitrophenol
100027
0.1
2-Nitropropane
79469
20
0.1
N-Nitrosodi-n-butylamine
924163
0.0006
Page 18 of 35
Table I Acceptable Ambient Levels (AALs) (μg/m3)
CHEMICAL NAME
CAS #
1 hour
24 hour
Annual
N-Nitrosodiethylamine
55185
0.00002
N-Nitrosodimethylamine
62759
0.00007
N-Nitrosodiphenylamine
86306
0.4
N-Nitrosdi-n-propylamine
621647
300
0.0005
N-Nitroso-n-methylethylamine
10595956
0.0002
N-Nitroso-n-methylurea
684935
0.00003
N-Nitrosomorpholine
59892
0.0005
N-Nitrosopiperidine
100754
0.0004
N-Nitrosopyrrolidine
930552
0.002
Parathion
56382
20
0.1
Pentachloronitrobenzene (Quintozene)
82688
10
Pentachlorophenol
87865
20
4
0.2
Phenol
108952
80
200
p-Phenylenediamine
106503
0.2
Phosgene
75445
4
0.3
Phosphine
7803512
0.3
Phosphoric acid
7664382
7
Phosphorus, white
7723140
20
0. 07
Phthalic anhydride
85449
7,000
20
Polychlorinated biphenyls (PCBs), except Aroclor
1254
1336363
0. 2
0.001
PCBs- Aroclor 1254
11097691
0.07
Polychlorinated dibenzo dioxins (PCDDs),
Polychlorinated dibenzo furans (PCDFs) and
dioxin-like Polychlorinated biphenyls (PCBs)
3 x 10-9 d
Polycyclic Organic Matter
0.00009e
1,3-Propane sultone
1120714
0.001
beta-Propiolactone
57578
0.0002
Propionaldehyde
123386
8
Propoxur (Baygon)
114261
10
0. 1
n-Propyl bromide (1-Bromopropane)
106945
5,000
1,000
Propylene
115071
3,000
Propylene dichloride (1,2-Dichloropropane)
78875
200
4
0.1
Propylene glycol monomethyl ether (PGME)
107982
7,000
Propylene oxide
75569
3,000
0.3
1,2-Propylenimine (2-Methyl aziridine)
75558
0.0001
Quinoline
91225
0.001
Quinone
106514
1
Selenium & compoundsa, except Hydrogen
selenide and Selenium sulfide
20
Page 19 of 35
Table I Acceptable Ambient Levels (AALs) (μg/m3)
CHEMICAL NAME
CAS #
1 hour
24 hour
Annual
Selenium – Hydrogen selenide
7783075
5
Selenium sulfide
7446346
20
0.2
Sodium hydroxide
1310732
8
5
Styrene
100425
9,000
1,000
100
Styrene oxide
96093
0.02
Sulfatesf
100
20
Sulfuric acid and Oleumg
100
1
1,1,1,2-Tetrachloroethane
630206
100
1,1,2,2-Tetrachloroethane
79345
2,000
Tetrachloroethylene (Perchloroethylene)
127184
1,000
0.2
Tetrachlorophenols
25167833
90
1,1,1,2-Tetrafluoroethane
811972
80,000
Thioacetamide
62555
0.0006
Titanium tetrachloride
7550450
10
0.1
Toluene
108883
4,000
300
2,4-Toluene diamine (2,4-Diaminotoluene)
95807
0.0009
2,4-and 2,6-Toluene diisocyanateh
26471625
0.07
o-Toluidine
95534
0.02
Toxaphene (Chlorinated camphene)
8001352
20
4
0.0003
1,2,4-Trichlorobenzene
120821
30
1,1,2-Trichloroethane
79005
10
Trichloroethylene
79016
10,000
500
0.5
Trichlorofluoromethane
75694
1,000
2,4,5-Trichlorophenol
95954
300
2,4,6-Trichlorophenol
88062
0.3
Triethylamine
121448
3,000
7
Trifluralin
1582098
30
3
2,2,4-Trimethylpentane
540841
3,000
Vanadium & compoundsa
0.2
Vinyl acetate
108054
200
20
Vinyl bromide
593602
3
0.005
Vinyl chloride
75014
1,000
100
0.2
Vinylidene chloride (1,1-Dichloroethylene)
75354
200
70
Xylenes, isomers and mixtures
1330207
9,000
3,000
100
Zinc & compoundsa
1,000
30
aFor metal compounds, concentrations apply to the metal portion of the compound.
bAsbestos units are fibers/cubic meter.
cFine mineral fibers are mineral fiber emissions from facilities manufacturing or processing
glass, rock, or slag fibers or other mineral derived fibers of average diameter 1 micrometer (µm)
or less.
Page 20 of 35
dPCDD AAL is in terms of 2,3,7,8-tetrachlorodibenzodioxin equivalents, calculated as specified
in the Rhode Island Air Toxics Guideline.
ePolycyclic Organic Matter AAL is in terms of benzo(a)pyrene equivalents, calculated as
specified in the Rhode Island Air Toxics Guideline.”
fSulfates AALs apply to ammonium bisulfate [(NH4)HSO4, CAS 7803-63-6], ammonium sulfate
[(NH4)2SO4, CAS 7783-20-2], ferric sulfate [Fe(SO4)3, CAS 10028-22-5] and sodium sulfate
[Na2SO4, CAS 7757-82-6]
gSulfuric acid and oleum AALs apply to sulfuric acid (H2SO4, CAS 7664-03-9), sulfur trioxide
(SO3, CAS 7446-71-9) and oleum (H2SO4 + SO3, CAS 8014-95-7)
hIncludes 2,4-TDI (CAS 584849), 2,6-TDI (CAS 91087) and 2,4/2,6 mixtures (CAS 26471625)
IOne-hour AAL for chloroform should be compared to 7 – 8 hour average concentrations.
j For bromine, cyanide and fluoride compounds, concentrations apply to the bromine, cyanide or
fluoride portion of the compound.
Page 21 of 35
Table II Acceptable Ambient Levels (AALs) with LAER (μg/m3)
CHEMICAL NAME
CAS #
1 hour
24 hour
Annual
Acetaldehyde
75070
5
Acetamide
60355
0.5
Acetone
67641
60,000
30,000
Acetonitrile
75058
60
Acetophenone
98862
300
2-Acetylaminofluorene
53963
0.008
Acrolein
107028
0.2
0.02
Acrylamide
79061
0.008
Acrylic Acid
79107
6,000
1
Acrylonitrile
107131
200
0.1
Aldrin
309002
7
0. 1
0.0002
Allyl Chloride
107051
1
2-Aminoanthraquinone
117793
1
4-Aminobiphenyl
92671
0.002
Ammonia
7664417
1,000
100
70
Aniline
62533
1
o-Anisidine
90040
0.2
Antimony & compoundsa, except trioxide
0.2
Antimony trioxide
1309644
0.2
0.02
Aramite
140578
1
Arsenic & compoundsa (inorganic)
0.2
0.002
Arsine
7784421
200
0.05
Asbestos
1332214
40b
Azobenzene
103333
0.3
Barium
7440393
700
Benzene
71432
30
20
1
Benzidine
92875
0.0002
Benzoic acid
65850
10,000
Benzotrichloride
98077
0.003
Benzyl chloride
100447
200
0.2
Beryllium & compoundsa
0.02
0.004
Biphenyl
92524
200
Bis (chloromethyl) ether
542881
1
0.0002
Bis (2-ethylhexyl) phthalate (DEHP)
117817
70
4
Boron and borates
10
Bromates (including Potassium bromate)
10
0.07
Bromine & compounds
(except Hydrogen bromide & Bromates)j
2
Bromodichloromethane
75274
100
70
0.3
Page 22 of 35
Table II Acceptable Ambient Levels (AALs) with LAER (μg/m3)
CHEMICAL NAME
CAS #
1 hour
24 hour
Annual
Bromoform
75252
2,000
70
9
1,3-Butadiene
106990
0.3
Butyl benzyl phthalate
85687
700
Cadmium & compoundsa
0.1
0.006
Calcium cyanamide
156627
1
Captan
133062
500
10
Carbaryl
63252
300
Carbon disulfide
75150
6,000
700
Carbon tetrachloride
56235
2,000
200
0.7
Carbonyl sulfide
463581
200
30
Catechol
120809
6000
5
Chloramben
133904
50
Chlordane
57749
0.7
0.01
Chlorinated paraffins
(avg length C12- C13, 60% chlorine)
108171262
0.4
Chlorine
7782505
200
6
0.1
Chlorine dioxide
10049044
3
0.2
Chloroacetic acid
79118
30
7
2-Chloroacetophenone
532274
0.03
4-Chloroaniline
106478
10
1
Chlorobenzene
108907
1,000
Chlorobenzilate
510156
70
0. 7
1-Chloro-1,1-difluoroethane (CFC 142B)
75683
50,000
Chlorodifluoromethane (HCFC-22)
75456
50,000
Chloroform
67663
100i
2
Chloromethyl methyl ether
107302
0.01
2-Chlorophenol
95578
20
4-Chloro-o-phenylenediamine
95830
2
Chloropicrin
76062
30
0.4
Chloroprene
126998
1
p-Chloro-o-toluidine
95692
0.1
Chromium III & compoundsa (insoluble salts)
5,000
Chromium VI & compoundsa - mists and aerosols
0.008
0.0008
Chromium VI & compoundsa – solid particulate
1
0.0008
Cobalt & compoundsa
0.001
Coke oven emissionsa
8007452
0.02
Copper & compoundsa (except Copper cyanide)
100
2
p-Cresidine
120718
0.2
Cresols/Cresylic acid, isomers and mixtures
(Methylphenols)
1319773
600
Page 23 of 35
Table II Acceptable Ambient Levels (AALs) with LAER (μg/m3)
CHEMICAL NAME
CAS #
1 hour
24 hour
Annual
Cumene
98828
400
Cupferron
135206
0.2
Cyanide & compounds (inorganic)j,
except Hydrogen cyanide
300
9
Cyclohexane
110827
6,000
2,4-Diaminoanisole
615054
2
2,4-Diaminotoluene
95807
0.009
Diazomethane
334883
0.8
Dibromochloromethane
124481
300
70
1,2-Dibromo-3-chloropropane
96128
0.2
0.005
Dibutylphthalate
84742
2,000
300
1,2-Dichlorobenzene
95501
2000
300
1,4-Dichlorobenzene (p-Dichlorobenzene)
106467
12,000
0.9
3,3'-Dichlorobenzidene
91941
0.03
Dichloro diphenyl dichloroethylene (DDE)
3547044
0.1
cis- 1,2-Dichloroethene
156592
3,000
1,000
trans- 1,2-Dichloroethene
156605
800
70
Dichloroethyl ether (Bis (chloroethyl) ether)
111444
100
0.03
2,4-Dichlorophenoxyacetic acid
94757
30
1,3-Dichloropropene
542756
20
2
Dichlorvos
62737
20
3
0.1
Dieldrin
60571
0. 2
0.002
Diethanolamine
111422
3
Diethyl sulfate
64675
0.03
1,1-Difluoroethane (HCFC 152a)
75376
40,000
3,3'-Dimethoxybenzidine
119904
0.008
p-Dimethyl aminoazobenzene
60177
0.008
n,n-Dimethyl aniline
121697
7
3,3'-Dimethyl benzidine
119937
0.002
Dimethyl carbamoyl chloride
79447
0.003
Dimethyl formamide
68122
30
1,1-Dimethyl hyrazine
57147
0.5
0.01
1,2-Dimethyl hyrazine
540738
3
0.00006
2,4-Dimethylphenol
105679
70
Dimethyl phthalate
131113
10
Dimethyl sulfate
77781
0.002
4,6-Dinitro-o-cresol
534521
10
2,4-Dinitrophenol
51285
30
7
2,4-Dinitrotoluene
121142
200
7
0.1
1,4-Dioxane (1,4-Diethyleneoxide)
123911
3,000
1
Page 24 of 35
Table II Acceptable Ambient Levels (AALs) with LAER (μg/m3)
CHEMICAL NAME
CAS #
1 hour
24 hour
Annual
1,2-Diphenylhydrazine (Hydrazobenzene)
122667
0.05
Epichlorohydrin
106898
1,000
1
1,2-Epoxybutane
106887
2
Ethyl acrylate
140885
0.5
Ethyl benzene
100414
40,000
3,000
1000
Ethyl carbamate (Urethane)
51796
0.03
Ethyl chloride (Chloroethane)
75003
40,000
10,000
Ethylene dibromide (Dibromoethane)
106934
9
0.02
Ethylene dichloride (1,2-Dichloroethane)
107062
0.4
Ethylene glycol
107211
2,000
7,000
400
Ethylene glycol monobutyl ether
111762
10,000
1,000
Ethylene glycol monoethyl ether
110805
400
200
70
Ethylene glycol monoethyl ether acetate
111159
100
Ethylene glycol monomethyl ether
109864
90
20
Ethylene glycol monomethyl ether acetate
110496
90
Ethylene imine (Aziridine)
151564
0.0005
Ethylene oxide
75218
200
0.1
Ethylene thiourea
96457
0.3
Ethylidene dichloride (1,1-Dichloroethane)
75343
6
Fluorides & compoundsj, including Hydrogen
fluoride
20
3
Formaldehyde
50000
50
40
0.8
Glutaraldehyde
111308
0.08
Heptachlor
76448
2
0.4
0.0008
Hexachlorobenzene
118741
30
0.4
0.002
Hexachlorobutadiene
87683
0. 7
Hexachlorocyclohexanes, technical grade & mixed
isomers
608731
0.02
alpha-Hexachlorocyclohexane
319846
0.006
beta-Hexachlorocyclohexane
319857
200
2
0.02
gamma-Hexachlorocyclohexance (Lindane)
58899
10
0.04
0.03
Hexachlorocyclopentadiene
77474
100
0.2
Hexachloroethane
67721
60,000
3
Hexamethylene-1,6-diisocyanate
822060
0.2
0.03
Hexamethylphosphoramide
680319
0.0005
Hexane
110543
700
Hydrazine
302012
5
0.002
Hydrochloric acid (Hydrogen chloride)
7647010
2,000
9
Hydrogen bromide
10035106
20
Hydrogen cyanide
74908
300
3
Page 25 of 35
Table II Acceptable Ambient Levels (AALs) with LAER (μg/m3)
CHEMICAL NAME
CAS #
1 hour
24 hour
Annual
Hydrogen sulfide
7783064
40
30
10
Hydroquinone
123319
1,000
5
Isophorone
78591
700
Isopropanol
67630
3,000
Lead & compoundsa, inorganic
0.08
Lead – tetraethyl lead
78002
0. 0003
Maleic anhydride
108316
10
0.7
Manganese & compoundsa
0.05
0.04
Mercury & compounds – elemental & inorganic
2
0.3
0.009
Mercury - methylmercury
22967926
0. 3
0. 003
Methanol
67561
30,000
4,000
Methoxychlor
72435
20
Methyl bromide (Bromomethane)
74839
200
5
Methyl chloride (Chloromethane)
74873
1,000
400
90
Methyl chloroform (1,1,1-Trichloroethane)
71556
9,000
6,000
5,000
4,4-Methylene bis (2-chloroaniline)
101144
0.02
Methylene chloride (Dichloromethane)
75092
2,000
1,000
20
4,4-Methylenedianiline
101779
700
300
0.02
Methylene diphenyl diisocyanate
101688
0.6
Methyl ethyl ketone (2-Butanone)
78933
10,000
5,000
Methyl hydrazine
60344
0.004
Methyl iodide (Iodomethane)
74884
30
Methyl isobutyl ketone (Hexanone)
108101
3,000
Methyl isocyanate
624839
1
Methyl methacrylate
80626
700
Methyl tert butyl ether (MTBE)
1634044
7,000
3,000
Michler's ketone
(4,4'-Bis (dimethylamino) benzophenone)
90948
0.04
Fine mineral fibersc
20
Molybdenum & compoundsa
20
Naphthalene
91203
3
0.3
Nickel and compoundsa, except Nickel subsulfide
6
0.2
0.04
Nickel subsulfide
12035722
6
0.2
0.02
Nitric acid
7697372
90
Nitrobenzene
98953
2
4-Nitrobiphenyl
92933
0.00002
4-Nitrophenol
100027
0.1
2-Nitropropane
79469
20
1
N-Nitrosodi-n-butylamine
924163
0.006
N-Nitrosodiethylamine
55185
0.0002
Page 26 of 35
Table II Acceptable Ambient Levels (AALs) with LAER (μg/m3)
CHEMICAL NAME
CAS #
1 hour
24 hour
Annual
N-Nitrosodimethylamine
62759
0.0007
N-Nitrosodiphenylamine
86306
4
N-Nitrosdi-n-propylamine
621647
300
0.005
N-Nitroso-n-methylethylamine
10595956
0.002
N-Nitroso-n-methylurea
684935
0.0003
N-Nitrosomorpholine
59892
0.005
N-Nitrosopiperidine
100754
0.004
N-Nitrosopyrrolidine
930552
0.02
Parathion
56382
20
0.1
Pentachloronitrobenzene (Quintozene)
82688
10
Pentachlorophenol
87865
20
4
2
Phenol
108952
80
200
p-Phenylenediamine
106503
0.2
Phosgene
75445
4
0.3
Phosphine
7803512
0.3
Phosphoric acid
7664382
7
Phosphorus, white
7723140
20
0. 07
Phthalic anhydride
85449
7,000
20
Polychlorinated biphenyls (PCBs), except Aroclor
1254
1336363
0. 2
0.01
PCBs- Aroclor 1254
11097691
0. 07
Polychlorinated dibenzo dioxins (PCDDs),
Polychlorinated dibenzo furans (PCDFs) and
dioxin-like Polychlorinated biphenyls (PCBs)
3 x 10-8 d
Polycyclic Organic Matter
0.0009e
1,3-Propane sultone
1120714
0.01
beta-Propiolactone
57578
0.002
Propionaldehyde
123386
8
100
Propoxur (Baygon)
114261
10
0. 1
n-Propyl bromide (1-Bromopropane)
106945
5000
1,000
Propylene
115071
3,000
Propylene dichloride (1,2-Dichloropropane)
78875
200
4
1
Propylene glycol monomethyl ether (PGME)
107982
7,000
Propylene oxide
75569
3,000
3
1,2-Propylenimine (2-methyl aziridine)
75558
0.001
Quinoline
91225
0.01
Quinone
106514
1
Selenium & compoundsa, except Hydrogen
selenide and Selenium sulfide
20
Selenium – Hydrogen selenide
7783075
5
Page 27 of 35
Table II Acceptable Ambient Levels (AALs) with LAER (μg/m3)
CHEMICAL NAME
CAS #
1 hour
24 hour
Annual
Selenium sulfide
7446346
20
0.2
Sodium hydroxide
1310732
8
5
Styrene
100425
9,000
1,000
100
Styrene oxide
96093
0.2
Sulfatesf
100
20
Sulfuric acid and Oleumg
100
1
1,1,1,2-Tetrachloroethane
630206
100
1,1,2,2-Tetrachloroethane
79345
2,000
200
Tetrachloroethylene (Perchloroethylene)
127184
1,000
2
Tetrachlorophenols
25167833
90
1,1,1,2-Tetrafluoroethane
811972
80,000
Thioacetamide
62555
0.006
Titanium tetrachloride
7550450
10
0.1
Toluene
108883
4,000
300
2,4-Toluene diamine (2,4-Diaminotoluene)
95807
0.009
2,4-and 2,6-Toluene diisocyanateh
26471625
0.07
o-Toluidine
95534
0.2
Toxaphene (Chlorinated camphene)
8001352
20
4
0.003
1,2,4-Trichlorobenzene
120821
30
1,1,2-Trichloroethane
79005
10
Trichloroethylene
79016
10,000
500
5
Trichlorofluoromethane
75694
1,000
2,4,5-Trichlorophenol
95954
300
2,4,6-Trichlorophenol
88062
3
Triethylamine
121448
3,000
7
Trifluralin
1582098
30
3
2,2,4-Trimethylpentane
540841
3,000
Vanadium & compoundsa
0.2
Vinyl acetate
108054
200
20
Vinyl bromide
593602
3
0.05
Vinyl chloride
75014
1,000
100
2
Vinylidene chloride (1,1-Dichloroethylene)
75354
200
70
Xylenes, isomers and mixtures
1330207
9,000
3,000
100
Zinc & compoundsa
1,000
30
aFor metal compounds, concentrations apply to the metal portion of the compound.
bAsbestos units are fibers/cubic meter.
cFine mineral fibers are mineral fiber emissions from facilities manufacturing or processing
glass, rock, or slag fibers or other mineral derived fibers of average diameter 1 micrometer (µm)
or less.
dPCDD AAL is in terms of 2,3,7,8-tetrachlorodibenzodioxin equivalents, calculated as specified
Page 28 of 35
in the Rhode Island Air Toxics Guideline
ePolycyclic Organic Matter AAL is in terms of benzo(a)pyrene equivalents, calculated as
specified in the Rhode Island Air Toxics Guideline.
fSulfates AALs apply to ammonium bisulfate [(NH4)HSO4, CAS 7803-63-6], ammonium sulfate
[(NH4)2SO4, CAS 7783-20-2], ferric sulfate [Fe(SO4)3, CAS 10028-22-5] and sodium sulfate
[Na2SO4, CAS 7757-82-6]
gSulfuric acid and oleum AALs apply to sulfuric acid (H2SO4, CAS 7664-03-9), sulfur trioxide
(SO3, CAS 7446-71-9) and oleum (H2SO4 + SO3, CAS 8014-95-7)
hIncludes 2,4-TDI (CAS 584849), 2,6-TDI (CAS 91087) and 2,4/2,6 mixtures (CAS 26471625)
IOne-hour AAL for chloroform should be compared to 7 – 8 hour average concentrations.
j For bromine, cyanide and fluoride compounds, concentrations apply to the bromine, cyanide or
fluoride portion of the compound.
Page 29 of 35
Table III Minimum Quantities (pounds/year)
CHEMICAL NAME
CAS #
Minimum Quantity
Acetaldehyde
75070
50
Acetamide
60355
5
Acetone
67641
20,000
Acetonitrile
75058
200
Acetophenone
98862
900
2-Acetylaminofluorene
53963
0.09
Acrolein
107028
0.07
Acrylamide
79061
0.09
Acrylic acid
79107
3
Acrylonitrile
107131
1
Aldrin
309002
0.002
Allyl chloride
107051
3
2-Aminoanthraquinone
117793
10
4-Aminobiphenyl
92671
0.02
Ammonia
7664417
300
Aniline
62533
3
o-Anisidine
90040
2
Antimony & compoundsa, including antimony trioxide
0.6
Aramite
140578
10
Arsenic & compoundsa (inorganic)
0.02
Arsine
7784421
0.2
Asbestos
1332214
400b
Azobenzene
103333
3
Barium
7440393
2,000
Benzene
71432
10
Benzidine
92875
0.002
Benzoic acid
65850
30,000
Benzotrichloride
98077
0.03
Benzyl chloride
100447
2
Beryllium & compoundsa
0.04
Biphenyl
92524
600
Bis (chloromethyl) ether
542881
0.002
Bis (2-ethylhexyl) phthalate (DEHP)
117817
40
Boron and borates
4
Bromates (including Potassium bromate)
0.8
Bromine and compounds (except Hydrogen bromide & Bromates)j
200
Bromodichloromethane
75274
3
Bromoform
75252
100
1,3-Butadiene
106990
3
Page 30 of 35
Table III Minimum Quantities (pounds/year)
CHEMICAL NAME
CAS #
Minimum Quantity
Butyl benzyl phthalate
85687
2,000
Cadmium & compoundsa
0.07
Calcium cyanamide
156627
100
Captan
133062
100
Carbaryl
63252
900
Carbon disulfide
75150
2,000
Carbon tetrachloride
56235
8
Carbonyl sulfide
463581
70
Catechol
120809
500
Chloramben
133904
200
Chlordane
57749
0.1
Chlorinated paraffins (avg length C12- C13, 60% chlorine)
108171262
4
Chlorine
7782505
10
Chlorine dioxide
10049044
9
Chloroacetic acid
79118
10
2-Chloroacetophenone
532274
0.09
4-Chloroaniline
106478
30
Chlorobenzene
108907
20,000
Chlorobenzilate
510156
80
1-Chloro-1,1-difluoroethane (CFC 142B)
75683
36,500
Chlorodifluoromethane (HCFC-22)
75456
36,500
Chloroform
67663
20
Chloromethyl methyl ether
107302
0.1
2-Chlorophenol
95578
60
4-Chloro-o-phenylenediamine
95830
20
Chloropicrin
76062
10
Chloroprene
126998
100
p-chloro-o-toluidine
95692
1
Chromium III & compoundsa, insoluble salts
20,000
Chromium VI & compoundsa
0.009
Cobalt & compoundsa
0.1
Coke oven emissions
8007452
0.2
Copper & compoundsa, except Copper cyanide
40
p-Cresidine
120718
2
Cresols/Cresylic acid isomers and mixtures (Methylphenols)
1319773
20,000
Cumene
98828
1,000
Cupferron
135206
2
Cyanide & compounds (inorganic)ij, except Hydrogen cyanide
100
Cyclohexane
110827
20,000
2,4-Diaminoanisole
615054
20
Page 31 of 35
Table III Minimum Quantities (pounds/year)
CHEMICAL NAME
CAS #
Minimum Quantity
2,4-Diaminotoluene
95807
0.1
Diazomethane
334883
90
Dibromochloromethane
124481
100
1,2-Dibromo-3-chloropropane
96128
0.05
Dibutylphthalate
84742
700
1,2-Dichlorobenzene
95501
700
1,4-Dichlorobenzene (p-Dichlorobenzene)
106467
10
3,3'-Dichlorobenzidene
91941
0.3
Dichloro diphenyl dichloroethylene (DDE)
3547044
1
cis- 1,2-Dichloroethene
156592
1,000
trans- 1,2-Dichloroethene
156605
300
Dichloroethyl ether (Bis (chloroethyl) ether)
111444
0.3
2,4-Dichlorophenoxyacetic acid, salts & esters (2,4-D)
94757
90
1,3-Dichloropropene
542756
20
Dichlorvos
62737
1
Dieldrin
60571
0.02
Diethanolamine
111422
300
Diethyl sulfate
64675
0.3
1,1-Difluoroethane (HCFC 152a)
75376
36,500
3,3'-Dimethoxybenzidine
119904
0.09
p-Dimethyl aminoazobenzene
60177
0.09
n,n-Dimethyl aniline
121697
20
3,3'-Dimethyl benzidine
119937
0.002
Dimethyl carbamoyl chloride
79447
0.03
Dimethyl formamide
68122
3,000
1,1-Dimethyl hyrazine
57147
0.1
1,2-Dimethyl hyrazine
540738
0.0007
2,4-Dimethylphenol
105679
200
Dimethyl phthalate
131113
1,000
Dimethyl sulfate
77781
0.02
4,6-Dinitro-o-cresol
534521
4
2,4-Dinitrophenol
51285
10
2,4-Dinitrotoluene
121142
1
1,4-Dioxane (1,4-Diethyleneoxide)
123911
10
1,2-Diphenylhydrazine (Hydrazobenzene)
122667
0.5
Epichlorohydrin
106898
90
1,2-Epoxybutane
106887
200
Ethyl acrylate
140885
50
Ethyl benzene
100414
9,000
Ethyl carbamate (Urethane)
51796
0.3
Page 32 of 35
Table III Minimum Quantities (pounds/year)
CHEMICAL NAME
CAS #
Minimum Quantity
Ethyl chloride (Chloroethane)
75003
10,000
Ethylene dibromide (Dibromoethane)
106934
0.2
Ethylene dichloride (1,2-Dichloroethane)
107062
4
Ethylene glycol
107211
700
Ethylene glycol monobutyl ether
111762
4,000
Ethylene glycol monoethyl ether
110805
100
Ethylene glycol monoethyl ether acetate
111159
40
Ethylene glycol monomethyl ether
109864
30
Ethylene glycol monomethyl ether acetate
110496
10,000
Ethylene imine (Aziridine)
151564
0.005
Ethylene oxide
75218
1
Ethylene thiourea
96457
9
Ethylidene dichloride (1,1-Dichloroethane)
75343
70
Fluorides & compoundsj, including Hydrogen fluoride
7
Formaldehyde
50000
9
Glutaraldehyde
111308
9
Heptachlor
76448
0.009
Hexachlorobenzene
118741
0.02
Hexachlorobutadiene
87683
2
Hexachlorocyclohexanes, technical grade & mixed isomers
608731
0.2
alpha-Hexachlorocyclohexane
319846
0.07
beta-Hexachlorocyclohexane
319857
0.2
gamma-Hexachlorocyclohexane (Lindane)
58899
0.1
Hexachlorocyclopentadiene
77474
20
Hexachloroethane
67721
30
Hexamethylene-1,6-diisocyanate
822060
0.6
Hexamethylphosphoramide
680319
0.005
Hexane
110543
20,000
Hydrazine
302012
0.02
Hydrochloric acid (Hydrogen chloride)
7647010
700
Hydrogen bromide
10035106
2,000
Hydrogen cyanide
74908
100
Hydrogen sulfide
7783064
10
Hydroquinone
123319
500
Isophorone
78591
2,000
Isopropanol
67630
1,000
Lead & compoundsa, inorganic
0.9
Lead - tetraethyl lead
78002
0.0009
Maleic anhydride
108316
4
Manganese & compoundsa
0.2
Page 33 of 35
Table III Minimum Quantities (pounds/year)
CHEMICAL NAME
CAS #
Minimum Quantity
Mercury & compoundsa – elemental & inorganic
0.7
Mercury – Methyl mercury
22967926
0. 3
Methanol
67561
10,000
Methoxychlor
72435
60
Methyl bromide (Bromomethane)
74839
70
Methyl chloride (Chloromethane)
74873
400
Methyl chloroform (1,1,1-Trichloroethane)
71556
3,000
4,4-Methylene bis (2-chloroaniline)
101144
0.2
Methylene chloride (Dichloromethane)
75092
200
4,4-Methylenedianiline
101779
0.2
Methylene diphenyl diisocyanate
101688
70
Methyl ethyl ketone (2-Butanone)
78933
4,000
Methyl hydrazine
60344
0.04
Methyl iodide (Iodomethane)
74884
3,000
Methyl isobutyl ketone (Hexanone)
108101
9,000
Methyl isocyanate
624839
100
Methyl methacrylate
80626
2,000
Methyl tert butyl ether (MTBE)
1634044
3,000
Michler's ketone (4,4'-Bis (dimethylamino) benzophenone)
90948
0.4
Fine mineral fibersc
2,000
Molybdenum and compoundsa
60
Naphthalene
91203
3
Nickel and compoundsa, except Nickel subsulfide
0.4
Nickel subsulfide
12035722
0.2
Nitric acid
7697372
30
Nitrobenzene
98953
200
4-Nitrobiphenyl
92933
0.002
4-Nitrophenol
100027
10
2-Nitropropane
79469
10
N-Nitrosodi-n-butylamine
924163
0.07
N-Nitrosodiethylamine
55185
0.002
N-Nitrosodimethylamine
62759
0.008
N-Nitrosodiphenylamine
86306
40
N-Nitrosdi-n-propylamine
621647
0.05
N-Nitroso-n-methylethylamine
10595956
0.02
N-Nitroso-n-methylurea
684935
0.003
N-Nitrosomorpholine
59892
0.05
N-Nitrosopiperidine
100754
0.04
N-Nitrosopyrrolidine
930552
0.2
Parathion
56382
10
Page 34 of 35
Table III Minimum Quantities (pounds/year)
CHEMICAL NAME
CAS #
Minimum Quantity
Pentachloronitrobenzene (Quintozene)
82688
30
Pentachlorophenol
87865
7
Phenol
108952
30
p-Phenylenediamine
106503
20
Phosgene
75445
0.9
Phosphine
7803512
30
Phosphoric acid
7664382
800
Phosphorus, white
7723140
0.2
Phthalic anhydride
85449
2,000
Polychlorinated biphenyls (PCBs), except Aroclor 1254
1336363
0.1
PCBs- Aroclor 1254
11097691
0.2
Polychlorinated dibenzo dioxins (PCDDs), polychlorinated dibenzo
furans (PCDFs) and dioxin-like polychlorinated biphenyls (PCBs)
3 X 10-7d
Polycyclic Organic Matter
0.01e
1,3-Propane sultone
1120714
0.1
beta-Propiolactone
57578
0.02
Propionaldehyde
123386
20
Propoxur (Baygon)
114261
10
n-Propyl bromide (1-Bromopropane)
106945
10,000
Propylene
115071
36,500
Propylene dichloride (1,2-Dichloropropane)
78875
10
Propylene glycol monomethyl ether (PGME)
107982
36,500
Propylene oxide
75569
30
1,2-Propylenimine (2-Methyl aziridine)
75558
0.01
Quinoline
91225
0.1
Quinone
106514
100
Selenium & compoundsa except Hydrogen selenide and Selenium
sulfide
7782492
2,000
Selenium – Hydrogen selenide
2
Selenium sulfide
7446346
20
Sodium hydroxide
1310732
3
Styrene
100425
3,000
Styrene oxide
96093
2
Sulfatesf
40
Sulfuric acid and Oleumg
40
1,1,1,2-Tetrachloroethane
630206
300
1,1,2,2-Tetrachloroethane
79345
6,000
Tetrachloroethylene (Perchloroethylene)
127184
20
Tetrachlorophenols
25167833
10,000
1,1,1,2-Tetrafluoroethane
811972
36,500
Page 35 of 35
Table III Minimum Quantities (pounds/year)
CHEMICAL NAME
CAS #
Minimum Quantity
Thioacetamide
62555
0.07
Titanium tetrachloride
7550450
10
Toluene
108883
1,000
2,4-Toluene diamine (2,4-Diaminotoluene)
95807
0.1
2,4-and 2,6-Toluene diisocyanateh
26471625
8
o-Toluidine
95534
2
Toxaphene (Chlorinated camphene)
8001352
0.03
1,2,4-Trichlorobenzene
120821
90
1,1,2-Trichloroethane
79005
30
Trichloroethylene
79016
50
Trichlorofluoromethane
75694
3,000
2,4,5-Trichlorophenol
95954
900
2,4,6-Trichlorophenol
88062
30
Triethylamine
121448
800
Trifluralin
1582098
90
2,2,4-Trimethylpentane
540841
20,000
Vanadium and compoundsa
0.07
Vinyl acetate
108054
600
Vinyl bromide
593602
0.5
Vinyl chloride
75014
20
Vinylidene chloride (1,1-Dichloroethylene)
75354
600
Xylenes, isomers and mixtures
1330207
3,000
Zinc and compoundsa
3,000
aFor metal compounds, Minimum Quantities apply to the metal portion of the compound.
bAsbestos units are fibers/year.
cFine mineral fibers are mineral fiber emissions from facilities manufacturing or processing glass,
rock, or slag fibers or other mineral derived fibers, average diameter 1 micrometer (µm) or less.
dPCDD Minimum Quantity is in terms of 2,3,7,8-tetrachlorodibenzodioxin equivalents, calculated as
specified in the Rhode Island Air Toxics Guideline.
ePolycyclic Organic Matter Minimum Quantity is in terms of benzo(a)pyrene equivalents, calculated
as specified in the Rhode Island Air Toxics Guideline.
fSulfates MQ applies to ammonium bisulfate [(NH4)HSO4, CAS 7803-63-6], ammonium sulfate
[(NH4)2SO4, CAS 7783-20-2], ferric sulfate [Fe(SO4)3, CAS 10028-22-5] and sodium sulfate
[Na2SO4, CAS 7757-82-6]
gSulfuric acid and oleum MQ applies to sulfuric acid (H2SO4, CAS 7664-03-9), sulfur trioxide (SO3,
CAS 7446-71-9) and oleum (H2SO4 + SO3, CAS 8014-95-7)
hIncludes 2,4-TDI (CAS 584849), 2,6-TDI (CAS 91087) and 2,4/2,6 mixtures (CAS 26471625)
iXCN where X equals any group other than H where a formal dissociation may occur, such as KCN
or Ca(CN)2.
j For bromine, cyanide and fluoride compounds, MQs apply to the bromine, cyanide or fluoride portion
of the compound