New Source Review (NSR) Permitting
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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
Types of CAA Permits
Clean Air Act Permitting includes:
- Outer Continental Shelf and Deepwater Permits
- NSR Permitting (this website)
- Title V Operating Permits
- Tribal Permits
News and Announcements
May 11, 2026 - Revision to “Begin Actual Construction” in the New Source Review (NSR) Preconstruction Permitting Program; Proposed Rule
September 18, 2025 - New Source Review Program "Reactivation Policy"
September 15, 2025 - New Source Review (NSR) Actual-to-Projected Actual Memorandum
September 9, 2025 - EPA announces it is providing new guidance and intending to propose revisions to the New Source Review provisions addressing Begin Actual Construction.