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  1. Home
  2. Regulatory Flexibility for Small Entities

Regulatory Flexibility Act Section 610 Reviews

Section 610 of the Regulatory Flexibility Act (RFA) requires that federal agencies review each rule that may have a significant economic impact on a substantial number of small entities (SISNOSE) within ten years of publication of the final rule. EPA initiates a Section 610 review in order to determine if the provisions of a rule that are related to small entities should be continued without change, rescinded, or amended to minimize adverse economic impacts on small entities.

The first table below lists Section 610 reviews in chronological order from the date they began. The first two columns of the table below provide the citation and link for the appropriate Federal Register notice announcing the start and conclusion of the review. Where available, use the Regulation Identifier Number (RIN) after each citation to locate the appropriate entry. The third column lists the title of the rule that was reviewed. If the same rule also involved a Small Business Advocacy Review (SBAR) Panel, you will be able to click on the title to access more information.

The second table below lists anticipated Section 610 Reviews. If the projected start date of a review contains an asterisk (*), that rule is subject to more than one retrospective review requirement (e.g., a Safe Drinking Water Act 6-year review or a Clean Air Act risk and technology review) and multiple retrospective reviews may be coordinated whenever practicable.

Review Start
(Federal Register citation
and RIN)
Review Conclusion
(Federal Register citation
and RIN)
Title of rule
(linked to associated SBAR Panel
when applicable)

03/31/2025
(90 FR 14227)(RIN 2060-AW31)

  National Emission Standards for Hazardous Air Pollutants for Brick and Structural Clay Products Manufacturing and Clay Ceramics Manufacturing

08/16/2024
(89 FR 66866)(RIN 2060-AW17)

  Standards of Performance: New Residential Wood Heaters, New Residential Hydronic Heaters and Forced-Air Furnaces
07/27/2023
(88 FR 48598)
(RIN 2060-AV90)
08/16/2024
(89 FR 66866)(RIN 2060-AV90)
Control of Air Pollution from Motor Vehicles: Tier 3 Motor Vehicle Emission and Fuel Standards

07/30/2021
(86 FR 41276)
(RIN 2060-AV08)

08/08/2022
(87 FR 48332)
(RIN 2060-AV08)

National Emission Standards for Hazardous Air Pollutants (NESHAP) for Coal- and Oil-fired Electric Utility Steam Generating Units

08/26/2020
(85 FR 52763)
(RIN 2060-AU76)

07/30/2021
(86 FR 41276)
(RIN 2060-AU76)

National Emission Standards for Hazardous Air Pollutants for Area Sources: Industrial, Commercial, and Institutional Boilers

08/26/2020
(85 FR 52763)
(RIN 2060-AU77)

07/30/2021
(86 FR 41276)
(RIN 2060-AU77)

National Emission Standards for Hazardous Air Pollutants for Major Sources: Industrial, Commercial and Institutional Boilers and Process Heaters
06/24/2019
(84 FR 29689)
(RIN 2060-AU44)
01/31/2022
(87 FR 5288)
(RIN 2060-AU44)
Renewable Fuels Standard Program
06/09/2016
(81 FR 37374)
(RIN 2070-AK17)
06/11/2018
(83 FR 27198)
(RIN 2070-AK17)
Lead-Based Paint Activities; Training and Certification for Renovation and Remodeling Section 402(c)(3)
06/09/2016
(81 FR 37374)
(RIN 2060-AS88)
12/23/2016
(81 FR 94809)
(RIN 2060-AS88)
Control of Hazardous Air Pollutants From Mobile Sources

12/15/2015
(80 FR 78024)
(RIN 2040-AF58)

06/09/2016
(81 FR 37374)
(RIN 2040-AF58)

National Primary Drinking Water Regulations: Ground Water Rule

01/07/2014
(79 FR 1216)
(RIN 2060-AR91)

12/22/2014
(79 FR 76772)
(RIN 2060-AR91)
Control of Emissions of Air Pollution from Nonroad Diesel Engines and Fuel
10/31/2012
(77 FR 65840)
(not listed)

07/23/2013
(78 FR 44316)
(RIN 2060-AR84)

National Emissions Standards for Hazardous Air Pollutants (NESHAP): Reinforced Plastic Composites Production
10/31/2012
(77 FR 65840)
(not listed)
12/22/2014
(79 FR 76772)
(RIN 2040-AF46)
National Pollutant Discharge Elimination System Permit Regulation and Effluent Limitations Guidelines Standards for Concentrated Animal Feeding Operations (CAFOs)
10/31/2012
(77 FR 65840)
(not listed)

01/07/2014
(79 FR 1216)
(RIN 2060-AR83)

Heavy-Duty Engine Emission Standards and Diesel Fuel Sulfur Control Requirements
12/20/2010
(75 FR 79844)
(RIN 2040-AF24)

02/13/2012
(77 FR 8004)
(RIN 2040-AF24)

National Primary Drinking Water Regulations: Arsenic and Clarifications to Compliance and New Source Contaminant Monitoring
04/26/2010
(75 FR 21872)
(RIN 2060-AQ12)
12/20/2010
(75 FR 79844)
(RIN 2060-AQ12)
Tier II Light-Duty Vehicle and Light-Duty Truck Emission Standards and Gasoline Sulfur Standards
04/26/2010
(75 FR 21872)
(RIN 2040-AF18)
07/07/2011
(76 FR 40118)
(RIN 2040-AF18)
Effluent Guidelines and Standards for the Centralized Waste Treatment Industry
04/26/2010
(75 FR 21872)
(RIN 2040-AF19)
12/20/2010
(75 FR 79844)
(RIN 2040-AF19)
National Primary Drinking Water Regulations: Radionuclides
05/11/2009 (Determination issued)
(74 FR 21992)
(RIN 2060-AP42)
Findings of Significant Contribution and Rulemaking on Section 126 Petitions for Purposes of Reducing Interstate Ozone Transport
05/11/2009
(74 FR 21992)
(RIN 2040-AF04)
12/07/2009
(74 FR 64496)
(RIN 2040-AF04)
Revisions to the Underground Injection Control (UIC) Requirements for Class V Wells
05/05/2008
(73 FR 24756)
(RIN 2060-AO82)
11/24/2008
(73 FR 71424)
(RIN 2060-AO82)
Control of Emissions of Air Pollution from Nonroad Diesel Engines
05/05/2008
(73 FR 24756)
(RIN 2040-AE97)
11/24/2008
(73 FR 71424)
(RIN 2040-AE97)
National Primary Drinking Water Regulations: Stage I Disinfectant/Disinfection By-Products Rule
05/05/2008
(73 FR 24756)
(RIN 2060-AP09)
11/24/2008
(73 FR 71424)
(RIN 2060-AP09)
Volatile Organic Compound (VOC) Regulation for Architectural Coatings
10/31/2005
(70 FR 65206)
(RIN 2050-AG26)
04/24/2006
(71 FR 23226)
(RIN 2050-AG26)
Accidental Release Prevention Requirements: Risk Management Programs Under the Clean Air Act, Section 112(r)(7)
06/28/2004
(69 FR 38154)
(RIN 2050-AG17)
12/13/2004
(69 FR 73786)
(RIN 2050-AG17)
Land Disposal Restrictions - Phase III: Decharacterized Wastewaters, Carbamate Wastes, and Spent Potliners
06/28/2004
(69 FR 38154)
(RIN 2060-AM41)
12/13/2004
(69 FR 73786)
(RIN 2060-AM41)
NESHAP: Petroleum Refineries
06/28/2004
(69 FR 38154)
(RIN 2060-AM39)
12/13/2004
(69 FR 73786)
(RIN 2060-AM39)
Emission Standards for New Nonroad Spark-Ignition Engines at or Below 19 Kilowatts
06/28/2004
(69 FR 38154)
(RIN 2060-AM40)
12/13/2004
(69 FR 73786)
(RIN 2060-AM40)
NESHAP: Secondary Lead Smelting
06/28/2004
(69 FR 38154)
(RIN 2050-AG19)
12/13/2004
(69 FR 73786)
(RIN 2050-AG19)
Land Disposal Restrictions - Phase II: Universal Treatment Standards, and Treatment Standards for Organic Toxicity Characteristic Wastes and Newly Listed Wastes
06/28/2004
(69 FR 38154)
(RIN 2060-AM38)
12/13/2004
(69 FR 73786)
(RIN 2060-AM38)
Fuel and Fuel Additives: Registration Requirements
05/27/2003
(68 FR 30942)
(RIN 2060-AK65)
12/22/2003
(68 FR 73540)
(RIN 2060-AK65)
Standards for Reformulated and Conventional Gasoline
05/27/2003
(68 FR 30942)
(RIN 2070-AD65)
5/16/2005
(70 FR 27510)
(RIN 2070-AD65)
Lead; Requirements for Lead-Based Paint Activities in Target Housing and Child-Occupied Facilities
05/27/2003
(68 FR 30942)
(RIN 2060-AK64)
06/28/2004
(69 FR 38154)
(RIN 2060-AK64)
National Emission Standards for Hazardous Air Pollutants (NESHAP): Perchlorethylene Dry Cleaning Facilities
05/27/2003
(68 FR 30942)
(RIN 2040-AD96)
06/28/2004
(69 FR 38154)
(RIN 2040-AD96)
Sewage Sludge Standards to Determine the Financial Impact on Small Entities in the Wastewater Treatment Sector
05/27/2003
(68 FR 30942)
(RIN 2060-AK66)
12/22/2003
(68 FR 73540)
(RIN 2060-AK66)
Inspection/Maintenance Program Requirements
05/27/2003
(68 FR 30942)
(RIN 2070-AD66)
05/16/2005
(70 FR 27510)
(RIN 2070-AD66)
Pesticide Worker Protection Rule
11/22/1999
(64 FR 65010)
(RIN 2050-AE75)
11/30/2000
(65 FR 74478)
(RIN 2050-AE75)
Criteria for Municipal Solid Waste Landfills
11/22/1999
(64 FR 65010)
(RIN 2040-AD45)
05/14/2001
(66 FR 26120)
(RIN 2040-AD45)
Effluent Guidelines and Standards for the Organic Chemicals, Plastics and Synthetic Fibers Category and Effluent Guidelines: Amendment to Organic Chemicals and Plastics
04/27/1998
(63 FR 22602)
(RIN 2050-AE57)
11/9/1998
(63 FR 62348)
(RIN 2050-AE57)
Technical Standards and Corrective Action Requirements for Owners and Operators of Underground Storage Tanks
04/27/1998
(63 FR 22602)
(RIN 2050-AE56)
11/09/1998
(63 FR 62348)
(RIN 2050-AE56)
Final Rule on Land Disposal Restrictions for First Third Scheduled Wastes
04/27/1998
(63 FR 22602)
(RIN 2040-AD13)
11/22/1999
(64 FR 65010)
(RIN 2040-AD13)
Effluent Limitations Guidelines and Standards for the Ore Mining and Dressing Point Source Category, Gold Placer Mine Subcategory
04/27/1998
(63 FR 22602)
(RIN 2060-AI05)
04/26/1999
(64 FR 21898)
(RIN 2060-AI05)
Standards of Performance for New Stationary Sources; New Residential Wood Heaters
04/25/1997
(62 FR 22296)
(RIN 2070-AD04)
11/09/1998
(63 FR 62348)
(RIN 2070-AD32)
Polychlorinated Biphenyls (PCBs); Disposal Amendments
04/25/1997
(62 FR 22296)
(RIN 2070-AC66)
11/09/1998
(63 FR 62348)
(RIN 2070-AD33)
Amendments to the Asbestos Worker Protection Rule
04/25/1997
(62 FR 22296)
(RIN 2070-AC51)
11/09/1998
(63 FR 62348)
(RIN 2070-AD35)
Revised Asbestos Model Accreditation Plan
04/25/1997
(62 FR 22296)
(RIN 2070-AC62)
11/09/1998
(63 FR 62348)
(RIN 2070-AC62)
Amendments to the Asbestos-Containing Materials in Schools Rule
04/25/1997
(62 FR 22296)
(not listed)
11/09/1998
(63 FR 62348)
(RIN 2060-AI18)
Lead Phasedown
04/25/1997
(62 FR 22296)
(not listed)
11/09/1998
(63 FR 62348)
(RIN 2060-AI19)
NSPS for Industrial Surface Coating: Metal Coils
04/25/1997
(62 FR 22296)
(not listed)
11/09/1998
(63 FR 62348)
(RIN 2060-AI20)
NSPS for Industrial Surface Coating: Metal Furniture
04/25/1997
(62 FR 22296)
(not listed)
11/09/1998
(63 FR 62348)
(RIN 2060-AI21)
New Source Performance Standard (NSPS) for Industrial Surface Coating: Large Appliances
Anticipated Section 610 Reviews
Projected Start Title of Rule
projected 2025 Emission Standards for New and Modified Sources in the Oil and Natural Gas Sector
projected 2025 Formaldehyde Emission Standards for Composite Products
projected 2025 Modernizing the Risk Management Plan (RMP) Rule
projected 2027 Regulation of Paint and Coating Removal for Consumer Use: Methylene Chloride
projected 2029* National Primary Drinking Water Regulations: Lead and Copper Rule Revisions
projected 2032 TSCA Section 8(a)(7) Rule: Reporting and Recordkeeping Requirements for Perfluoroalkyl and Polyfluoroalkyl Substances
projected 2032 Standards of Performance for New, Reconstructed, and Modified Sources and Emissions Guidelines for Existing Sources: Oil and Natural Gas Sector Climate Review
projected 2032* National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review
projected 2032* PFAS National Primary Drinking Water Regulation
projected 2032 Methylene Chloride; Risk Management Rulemaking under the Toxic Substances Control Act
projected 2032 New Source Performance Standards for Greenhouse Gas Emissions From New, Modified, and Reconstructed Fossil Fuel-Fired Electric Generating Units
projected 2033* National Emission Standards for Hazardous Air Pollutants: Lime Manufacturing Plants Amendments

Regulatory Flexibility for Small Entities

  • Learn About the Regulatory Flexibility Act
  • Small Business Advocacy Review (SBAR) Panels
  • Small Entity Compliance Guides
  • Section 610 Reviews
  • Frequent Questions for Small Entities
Contact Us About Regulatory Flexibility for Small Entities
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on April 2, 2025
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