Air Pollution Control Regulation No. 22 - Air Toxics


250-RICR-120-05-22 ACTIVE RULE

22.1 Purpose and Authority

22.1.1 Purpose

The purpose of this regulation is to limit emissions of toxic air contaminants from stationary sources.

22.1.2 Authority

These regulations are authorized pursuant to R.I. Gen. Laws § 42-17.1-2(19) and R.I. Gen. Laws Chapter 23-23, and have been promulgated pursuant to the procedures set forth in the Rhode Island Administrative Procedures Act, R.I. Gen. Laws Chapter 42-35.

22.2 Application

The terms and provisions of this regulation shall be liberally construed to permit the Department to effectuate the purposes of state laws, goals and policies.

22.3 Severability

If any provision of this regulation or the application thereof to any person or circumstance, is held invalid by a court of competent jurisdiction, the validity of the remainder of the regulation shall not be affected thereby.

22.4 Definitions

A. Unless otherwise expressly defined in this section, the terms used in this regulation shall be defined by reference to Part 0 of this Subchapter (General Definitions). As used in this regulation, the following terms shall, where the context permits, be construed as follows:

1. "Acceptable ambient level" or "AAL" means 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 §§ 22.9 and 22.10 of this Part, averaged over the time period specified in those tables.

2. “Carcinogen” means a listed toxic substance in §§ 22.9, 22.10, or 22.11 of this Part.

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.

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 § 22.9 of this Part, in a subsequent amendment of this regulation, a stationary source that was in existence on the effective date of that amendment.

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 Director, have the potential to cause serious health effects to members of the public.

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.

7. "Listed toxic air contaminant" means any listed toxic substance emitted to the atmosphere as dust, fume, gas, mist, smoke, vapor, or soot.

8. "Listed toxic substance" means any substance that is listed in § 22.9 of this Part.

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 Part 9 of this Subchapter (Air Pollution Control Permits), 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. Fifteen (15) tons per year of particulate matter less than 2.5 microns in diameter,

b. Twenty-five (25) tons per year of nitrogen oxides or volatile organic compounds,

c. Forty (40) tons per year of sulfur dioxide, or

d. One hundred (100) tons per year of carbon monoxide.

10. “Major fuel-burning source” means any stationary source that emits or has the potential to emit, as defined in Part 9 of this Subchapter (Air Pollution Control Permits), air pollutants from the combustion of fuel oil, propane, natural gas, or a combination of those fuels equal to or in excess of:

a. Fifty (50) tons per year of nitrogen oxides or volatile organic compounds or

b. One hundred (100) tons per year of carbon monoxide, sulfur dioxide or particulate matter less than 2.5 microns in diameter.

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 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.

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.

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.

22.5 Applicability and Exemptions

A. Applicability

1. The provisions of this regulation shall apply to any stationary source that emits a listed toxic air contaminant, unless exempted below.

B. Exemptions:

1. 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, 7 U.S.C. §136 et seq, or the Rhode Island Pesticide Control Act, R.I. Gen. Laws Chapter 23-25, 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”;

g. Lead paint hazard reduction projects and lead paint hazard control projects subject to the Rhode Island Department of Health Lead Poisoning Prevention regulations, 216-RICR-50-15-3;

h. Lead paint removal operations subject to Part 24 of this Subchapter (Removal of Lead Based Paint from Exterior Surfaces); and

i. Organic solvent cleaning operations subject to Part 36 of this Subchapter (Control of Emissions from Organic Solvent Cleaning), provided that facility-wide emissions of listed toxic air contaminants from said operations do not exceed two thousand (2000) pounds in any calendar year.

22.6 Requirements for Permits to Construct, Install, or Modify

A. 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 § 22.11 of this Part without first obtaining an approved permit to construct, install or modify from the Director.

1. Organic solvent cleaning machines are exempt from this requirement, provided that the machine meets the applicable requirements of Part 36 of this Subchapter (Control of Emissions from Organic Solvent Cleaning) and that the owner or operator of that machine submits a Compliance Notification Report that contains the required information in Part 36 of this Subchapter (Control of Emissions from Organic Solvent Cleaning), prior to construction, installation or modification of that machine.

B. All permits to construct, install or modify shall be issued in accordance with the provisions and limitations of Part 9 of this Subchapter (Air Pollution Control Permits).

C. Except as specified in § 22.6(D) of this Part, no permit to construct, install or modify will be issued for a stationary source subject to this regulation unless it can be demonstrated that:

1. 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 § 22.9 of this Part. (A guidance document to assist with compliance can be found in the Rhode Island Guideline for Air Quality Modeling for Air Toxics Sources http://www.dem.ri.gov/pubs/regs/regs/air/airtoxmd.pdf); or

2. The proposed facility is designed to achieve Lowest Achievable Emission Rate (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 § 22.10 of this Part.

D. The Director may, at their discretion, modify the modeling analysis requirements specified in § 22.6(C) of this Part by:

1. 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

2. 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

3. 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.

22.7 Requirement for Registration

A. 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 § 22.11 of this Part, during a calendar year shall register in writing with the Department on or before April 15 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 Part 14 of this Subchapter (Record Keeping and Reporting), shall satisfy this requirement provided that it includes all of the information listed in § 22.7(B) of this Part.

B. Registrations shall include, at a minimum, the following information:

1. The name and address of the facility;

2. The name and telephone number of the owner or operator of the facility and of a technical contact person for the facility; and

3. 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:

a. The name of the substance;

b. The process that emitted the substance;

c. The amount of the substance used at the facility during the previous calendar year,

d. The amount of the substance emitted by the facility during the previous calendar year, and

e. The method used to calculate emissions from the facility.

C. Any listed toxic substance that is present in a mixture shall be included in the registration provided that:

1. The substance is listed on the Safety Data Sheet (SDS) for that mixture prepared pursuant to the OSHA Hazard Communication Standard (29 C.F.R. § 1910.1200). If the chemical manufacturer claims on the SDS 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

2. For a mixture which does not have a SDS, the concentration of the listed toxic substance in the mixture is at least one percent (1%). A listed toxic substance 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.

22.8 Requirement for Air Toxics Operating Permits

A. No person shall operate a facility subject to this regulation if:

1. An application for an Air Toxics Operating Permit (ATOP) for that facility is not completed in accordance with the provisions of § 22.8(B) of this Part, upon notification from the Director; or

2. An ATOP for the facility is denied, following review of the Department; or

3. An ATOP or provisional ATOP for the facility is revoked by the Director.

B. 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 sixty (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 specified in the Rhode Island Air Toxics Guideline. ATOP application forms shall be signed by:

1. 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;

2. For a partnership or sole proprietorship: a general partner or the proprietor, respectively;

3. 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.

C. 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 it is determined that:

1. Except as provided in § 22.8(D) of this Part, 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 § 22.9 of this Part. (A guidance document to assist with compliance can be found in the Rhode Island for the Air Quality Modeling for Air Toxics Sources http://www.dem.ri.gov/pubs/regs/regs/air/airtoxmd.pdf); or

2. LAER has been achieved for emissions of a listed toxic air contaminant and, except as provided in § 22.8(D) of this Part, 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 § 22.10 of this Part.

D. The Director may, at their discretion, modify the modeling analysis requirements specified in § 22.8(C) of this Part, by:

1. 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

2. 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

3. 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.

E. 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 § 22.8(C) of this Part, the Director may issue a provisional ATOP to the facility which includes the following requirements:

1. The facility must be in compliance with the provisions of § 22.8(C) of this Part, within eighteen (18) months of the date of issuance of the provisional ATOP or another reasonable time period as specified by the Director. An additional six (6) months may be allowed if the facility notifies the Department within thirty (30) days of issuance of the provisional ATOP that reformulation will be attempted as a part of a strategy to reduce emissions; and

2. 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

3. 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 § 22.8(C) of this Part.

F. 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.

G. The Director may impose reasonable conditions in an ATOP, including but not limited to:

1. Limitations on hours of operation;

2. Limitations on allowable emissions;

3. Operation and maintenance criteria that are necessary to ensure that the allowable emissions limitations are not exceeded;

4. Installation and/or operation of instrumentation to monitor and record emission data or related parameters;

5. Conditions to ensure that emissions from the facility do not cause ground level concentrations that exceed Acceptable Ambient Levels;

6. 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

7. Periodic emissions testing of the source of the air toxics emissions.

H. 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 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 thirty (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.

I. 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.

22.9 Table I Acceptable Ambient Levels

Table I Acceptable Ambient Levels (AALs) (g/m3)

CHEMICAL NAME

CAS #

1-hour

24-hour

Annual

Acetaldehyde

75070



0.5

Acetamide

60355



0.05

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

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

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

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

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

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

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


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.

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 to 8-hour average concentrations.

jFor bromine, cyanide and fluoride compounds, concentrations apply to the bromine, cyanide or fluoride portion of the compound

22.10 Table II Acceptable Ambient Levels with LAER

Table II Acceptable Ambient Levels (AALs) with LAER (g/m3)

CHEMICAL NAME

CAS #

1-hour

24-hour

Annual

Acetaldehyde

75070



5

Acetamide

60355



0.5

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

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

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

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

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

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



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 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 to 8-hour average concentrations.

jFor bromine, cyanide and fluoride compounds, concentrations apply to the bromine, cyanide or fluoride portion of the compound.

22.11 Table III Minimum Quantities

Table III Minimum Quantities (pounds/year)

CHEMICAL NAME

CAS #

Minimum Quantity

Acetaldehyde

75070

50

Acetamide

60355

5

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

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

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

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

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

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

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



Title 250 Department of Environmental Management
Chapter 120 Air Resources
Subchapter 05 Air Pollution Control
Part 22 Air Pollution Control Regulation No. 22 - Air Toxics
Type of Filing Amendment
Regulation Status Active
Effective 01/10/2019

Regulation Authority :

R.I. Gen. Laws § 42-17.1-2(19)
R.I. Gen. Laws Chapter 23-23
R.I. Gen. Laws Chapter 42-35

Purpose and Reason :

The purpose of this regulation is to limit emissions of toxic air contaminant from stationary sources. The Department is proposing to remove acetone from the list of toxic air contaminants in Part 22. Portions of the regulation that no longer apply have been eliminated. The regulation has been updated to current RI Code of Regulations (RICR) format.