New Source Review (NSR) Permitting

Congress established the New Source Review (NSR) Permitting program as part of the 1977 Clean Air Act Amendments.

Basic Information

Learn about New Source Review:
- NSR basics
- What are permits?
- Who issues permits?

Laws, Regulatory Actions, and Guidance

Where You Live

Further Resources

Types of CAA Permits

News and Announcements

July 1, 2021 - Final Error Corrections Rule

April 21, 2021 - Additional Environmental Protection Agency (EPA) Views on Outer Continental Shelf Decommissioning Activities at the Chevron U.S.A. Inc. Gail and Grace Platforms

October 22, 2020 - Project Emissions Accounting final rule.

August 5, 2020 - Guidance on Plantwide Applicability Limitation Provisions Under the New Source Review Regulations.

March 19, 2020 - Final Amendments to the Federal Implementation Plan for Managing Air Emissions from True Minor Sources in Indian Country in the Oil and Natural Gas Production and Natural Gas Process Segments of the Oil and Natural Gas Sector

December 3, 2019 - "Ambient Air" Guidance

November 26, 2019 - Proposed NSR Error Corrections Rule and Factsheet

November 26, 2019 - "Adjacent" Guidance

November 6, 2019 - New online search features added to NSR Guidance Database

November 5, 2019 - Letter to New Jersey regarding Reconsideration of December 21, 2007 final rule, "Prevention of Significant Deterioration and Nonattainment New Source Review: Reasonable Possibility in Recordkeeping."

October 21, 2019 - 2019 Letter on Granting in Part and Denying in Part a Petition for Reconsideration of the 2007 Ethanol Rule

August 1, 2019 - Proposed Project Emissions Accounting Rule

Keys to Permitting Success

"We must deliver environmental justice in communities across all America"

In order to fulfill the directives in the Executive Order on Tackling the Climate Crisis at Home and Abroad and the Executive Order on Protecting Public Health and the Environment and Restoring Science to Tackle the Climate Crisis, EPA will commit to advancing environmental justice in permitting by expanding upon existing best practices for considering environmental justice in permitting.