An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »


View Dockets Open for Public Comment by Program Office

This page is a work in progress! Program offices will be gradually added to the list. To identify open comment periods for a particular docket, please contact your program office.

To view the comment period closing and Federal Register effective dates, please select the appropriate program office from the drop down menu below.

If you wish to comment, click on the hyperlink under the Document Bookmark column and you will be automatically routed to For more information about how to comment, go to Commenting on EPA Dockets.

OAR Comment Period Closings and Federal Register Effective Dates
January 15, 2021
Docket# Docket Title Document Bookmark Action Publish Date Comment End / Effective Date Notes
OAR-2019-0668 Guidance on the Preparation of Clean Air Act Section 179B Demonstrations for Nonattainment Areas Affected by International Transport of Emissions EPA-HQ-OAR-2019-0668-0018 Final Action 1/7/21 1/7/21  
OAR-2020-0560 National Emission Standards for Hazardous Air Pollutants: Mercury Cell Chlor-Alkali Plants Residual Risk and Technology Review EPA-HQ-OAR-2020-0560-0001 Proposed Rule 1/8/21 02/22/21  
OAR-2020-0535 Primary Magnesium Refining Residual Risk and Technology Review EPA-HQ-OAR-2020-0535-0001 Proposed Rule 1/8/21 02/22/21  
OAR-2018-0276 Control of Air Pollution From Airplanes and Airplane Engines: GHG Emission Standards and Test Procedures EPA-HQ-OAR-2018-0276-0205 Final Rule 1/11/21 1/11/21  
OAR-2020-0403 Information Collection Request;Comment Request; National EmissionStandards for Hazardous Air Pollutants(NESHAP) for Radon Emissions From
Operating Mill Tailings (Renewal)
EPA-HQ-OAR-2020-0403-0007 Notice 1/11/21 02/10/21  
OAR-2020-0572 National Emission Standards for Hazardous Air Pollutants: Flexible Polyurethane Foam Fabrication Operations Residual Risk and Technology Review and Flexible
Polyurethane Foam Production and Fabrication Area Source Technology Review
EPA-HQ-OAR-2020-0572-0001 Proposed Rule 1/11/21 02/25/21  
OAR-2013-0495 Pollutant-Specific Significant Contribution Finding for Greenhouse Gas Emissions From New, Modified, and Reconstructed Stationary Sources: Electric Utility Generating Units, and Process for Determining
Significance of Other New Source Performance Standards Source Categories
EPA-HQ-OAR-2013-0495-12746 Final Rule 1/13/21 03/15/21  
OAR-2020-0505 National Emission Standards for Hazardous Air Pollutants: Carbon Black Production Residual Risk and Technology Review and Carbon Black
Production Area Sources Technology Review
EPA-HQ-OAR-2020-0505-0001 Proposed Rule 1/14/21 03/01/21  
OAR-2020-0148 National Emission Standards for Hazardous Air Pollutants: Refractory Products Manufacturing Residual Risk and Technology Review EPA-HQ-OAR-2020-0148-0001 Proposed Rule 1/14/21 03/01/21  
OAR-2020-0240 Final Anti-Backsliding Determination for Renewable Fuels and Air Quality EPA-HQ-OAR-2020-0240-0021 Final Rule 1/15/21 01/15/21  
OAR-2020-0351 Ozone Transport Commission Recommendation that EPA Require Daily Limits for Emissions of Nitrogen Oxides From Certain Sources in Pennsylvania EPA-HQ-OAR-2020-0351-0003 Notice 1/15/21 03/08/21  
OAR-2020-0532 National Emission Standards for Hazardous Air Pollutants: Cyanide Chemicals Manufacturing Residual Risk and Technology Review EPA-HQ-OAR-2020-0532-0001 NPRM 1/15/21 03/01/21  
OAR-2020-0725 Extension of 2019 and 2020 Renewable Fuel Standard Compliance and Attest Engagement Reporting Deadlines  EPA-HQ-OAR-2020-0725-0001 NPRM 1/15/21 03/11/21  

OAR is responsible for the weekly updates of this page. If information is not current, please contact Lorraine Reddick (