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== New Source Review (NSR) Permitting | US EPA
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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: Core Principles of the EPA’s Air Permitting Programs
    • What are permits?
    • Who issues permits?
  • Learn about General Conformity

Laws, Regulatory Actions, and Guidance

  • Laws authorizing NSR permits
  • Regulatory actions
  • NSR Policy Guidance Database

Where You Live

  • Permitting actions in your state
  • Participate in the permitting process
Further Resources
  • NSR publications
  • Related EPA Websites
  • Rule References

Types of CAA Permits

Clean Air Act Permitting includes:
  • Outer Continental Shelf and Deepwater Permits
  • NSR Permitting (this website)
    • GHG Permitting
  • Title V Operating Permits
  • Tribal Permits

Environmental Justice in Air Permitting

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. 

  • Environmental Justice in Air Permitting Principles
  • EJ 2020 Action Agenda: EPA's Environmental Justice Strategy
  • EPA Legal Tools to Advance Environmental Justice
  • Interim Environmental Justice and Civil Rights in Permitting Frequently Asked Questions
  • Plan EJ 2014: Considering Environmental Justice in Permitting
See the Office of External Civil Rights Compliance’s webpage for information about special circumstances applying to the State of Louisiana and its agencies.

News and Announcements

December 10, 2024 - Alternative Demonstration Approach for the 2024 Secondary Sulfur Dioxide National Ambient Air Quality Standard under the Prevention of Significant Deterioration Program Alternative Demonstration Approach

October 16, 2024 - Prevention of Significant Deterioration (PSD): Paragraph Designation Corrections

April 30, 2024 - Supplement to the Guidance on Significant Impact Levels for Ozone and Fine Particles in the Prevention of Significant Deterioration Permitting Program

April 30, 2024 - Effective Permitting Tools for Fine Particulate Matter under the Prevention of Significant Deterioration Permitting Program Fact Sheet

February 22, 2024 - Revisions to Regulations Related to Project Emissions Accounting

Contact Us to ask a question, provide feedback, or report a problem.
Last updated on December 13, 2024
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