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Historical Regulatory Revisions and Hearing Reports
Regulations of Connecticut State Agencies (RCSA)
Sections 22a-174-1 to 22a-174-200
Abatement of Air Pollution

On July 1, 2017, the eRegulation System became the official version of the Regulations of Connecticut State Agencies and the electronic repository for the regulation-making records. The following table includes historical regulatory text for regulations amended before July 1, 2017. Please note these documents below are provided for historical reference only, please refer to the eRegulation System for all current regulations. 

How to Use This Table

Each regulation section in the left hand column links directly to its current form in the eRegulations System. The center column link provides the collected historical versions of the relevant regulatory section, listed by the effective date. The right hand column provides available hearing reports. Hearing reports include the comments submitted during the regulatory adoption process and the Department’s responses to such comments and thereby provide insight into the Department's intention concerning regulatory language.

Additional Historical Regulation Documentation

The Abatement of Air Pollution Regulations are currently adopted under the authority of C.G.S. 22a-174. C.G.S. 22a-174 was previously numbered as C.G.S.19-508. In 1983, C.G.S. 19-508 was transferred, and the regulations were under it were renumbered (see Public Act No. 83-277). The air pollution regulations as they existed when renumbered, effective August 1, 1983 are available in a combined file. Additionally, the historical versions above do not include the June 1972 regulations. These are documented as one PDF collection: 1972 Regulations.

  Section Number
(Links to current regulation in the Connecticut eRegulations System)
Historical
Regulation
Sections
Historical
Hearing Reports
(Date noted may be the date of the hearing, the date the hearing report was signed or the effective date of the action)
(The LOC report has been included if changes were mandated after the hearing process)
Definitions
October 3, 1989
April 25, 1988
July 1, 1986
December 17, 1984
Formerly identified as section
19-508-1:
September 24, 1982
February 20, 1976
August 20, 1974
June 1, 1972
22a-174-2

(REPEALED
but not replaced)

Registrations issued under the former Section 2 are still active until revoked under the Rules of Practice

Repealed effective March 15, 2002 with finalization of 22a-174-2a.
Formerly identified as section
19-508-2:
June 1, 1972 
 22a-174-2a
Procedural requirements for new source review and Title V permitting
22a-174-3

Permits

(REPEALED and replaced with 22a-174-3a)

Permits issued under the former Section 3 are still active until revoked or superseded
Repealed effective March 15, 2002  with finalization of 22a-174-3a,3b,3c.
December 2, 1994
October 3, 1989
December 27, 1988
(February 1989)
April 25, 1988
July 1, 1986
December 1983
Formerly identified as section
19-508-3:
September 24, 1982
October 10, 1980
June 1, 1972
22a-174-3a
Permit to Construct and Operate Stationary Sources 
Exemptions from permitting for construction and operation of external combustion units, automotive refinishing operations, emergency engines, nonmetallic mineral processing equipment and surface coating operations
Limitations on potential to emit for external combustion units, emergency engines, automotive refinishing operations, nonmetallic mineral processing equipment and surface coating operations
An air quality permit-by-rule for combined heat-and-power (CHP) systems.
Source monitoring, record keeping,  and reporting
December 27, 1988
October 10, 1980
October 31, 1977
June 15, 1973
June 1, 1972
Methods for sampling, emission testing, sample analysis and reporting
May 26, 2004
December 1989
April 25, 1988
May 18, 1983
October 5, 1977
June 1, 1972
Air pollution emergency episode procedures
October 1993
Formerly identified as section
19-508-6:
June 1, 1972
Air pollution control equipment and monitoring equipment operation
May 1989
April 25, 1988
Formerly identified as section
19-508-7:
June 1, 1972
Compliance plans and schedules
October 10, 1980
August 31, 1979
June 1, 1972
 Prohibition of air pollution
November 29, 1983
(effective December 1983)
June 1, 1972
Public availability of information

December 1983
June 1, 1972
Prohibition against concealment or circumvention

December 1983
June 1, 1972
Violations and enforcement

December 1983
June 1, 1972
Variances
December 1983
June 1, 1972
Compliance with regulation no defense to nuisance claim

December 1983
June 1, 1972
Severability

December 1983
June 1, 1972
Responsibility to comply with applicable regulations

June 1, 1972
22a-174-17
Control of open burning
(REPEALED)
December 1983
January 7, 1976
June 1, 1972
Control of particulate matter and visible emissions
December 1983
June 1, 1972
November 2, 1981
Control of sulfur compound emissions
  December 1983
Formerly identified as section
19-508-19:
November 2, 1981
May 29, 1980
October 5, 1977
November 14, 1975
June 1, 1972
22a-174-19a
Control of sulfur dioxide emissions from power plants and other large stationary sources of air pollution
Control of Organic Compound Emissions
April 1998
March 1, 1995
December 27, 1988
April 1, 1987
December 27, 1984
Formerly identified as section
19-508-20:
September 24, 1982
November 1, 1981
October 10, 1980
May 30, 1975
August 28, 1973
June 1, 1972
 22a-174-21
Control of carbon monoxide emissions
(REPEALED)
June 1, 1972 
22a-174-22
Control of nitrogen oxides emissions
(REPEALED, Effective June 1, 2018)
22a-174-22a

The Nitrogen Oxides (NOx) Budget Program
(REPEALED, Effective September 4, 2007 with finalization of 22a-174-22c)

Repealed effective 9/4/07 with finalization of 22a-174-22c.
Formerly identified as section
(PDF, 453K) 
March 1999
 22a-174-22b
The Post-2002 Nitrogen Oxides (NOx) Budget Program

(REPEALED, Effective May 1, 2010)

September 29, 1999
(October 1999)
March 1999 
The Clean Air Interstate Rule (CAIR) Nitrogen Oxides (NOx) Ozone Season Trading Program
Control of nitrogen oxides emissions from fuel-burning equipment at major stationary sources of nitrogen oxides

High daily NOx emitting units at non-major sources of NOx

Control of odors
Formerly identified as section
19-508-23:
June 1, 1972
Connecticut primary and secondary standards
April 25, 1988
Formerly identified as section
19-508-24:
November 2, 1981
October 10, 1980
June 1, 1972
22a-174-25
(REPEALED, Effective February 1, 2010)
December 1983
 
Formerly identified as section
19-508-25:
April 4, 1972
Fees
September 30, 2002
January 23, 1997
September 30, 1994
(October 1994)
(February 1989)
Formerly identified as section
19-508-26:
September 24, 1982
Emission standards and on-board diagnostic II test requirements for periodic motor vehicle inspection and maintenance
March 26, 1998
July 26, 1995
April 21, 1994
Formerly identified as section
19-508-27:
September 24, 1982
 Oxygenated gasoline
October 1999
July 26, 1995
November 30, 1993
November 2, 1992
Hazardous air pollutants
October 21, 1988
(February 1989)
April 25, 1988
July 1, 1986
22a-174-30
Dispensing of gasoline/Stage I and Stage II vapor recovery
(REPEALED)
November 24, 1992
   22a-174-30a  
Stage I vapor recovery
  
Control of Carbon Dioxide/Carbon Dioxide Budget Trading Program
Reasonably Available Control Technology (RACT) for organic compounds
November 18, 1993
Title V Sources
Low Emission Vehicles
March 3, 1998
December 23, 1994 
22a-174-36a
Heavy Duty Diesel Engines
(REPEALED)
Low Emission Vehicles II Program
Low Emission Vehicles III Program
 22a-174-37
(EXPIRED)
Emergency Utility Authorization
Emergency Regulation
Expired August 31, 1996
22a-174-37a
(EXPIRED)
Zero and Low Emissions Vehicles
Emergency Regulation
Expired 12/31/2012
Municipal Waste Combustors
Consumer Products
Architectural and Industrial Maintenance Coatings
Distributed Generators
***
2013 Analysis: Summary
and    
22a-174-43
Portable Fuel Container Spillage Control
(REPEALED)
Adhesives and sealants 

22a-174-100
Permits for construction of indirect sources
(REPEALED)
Formerly identified as section
19-508-100:
December 1983
June 30, 1977
May 30, 1975
August 20, 1974
Deactivation of air pollution control systems or mechanisms from motor vehicles
December 1983
September 24, 1982
 

Table of Current Air Regulations

Content Last Updated on July 24, 2019