HR 161
New Source Review Permitting Improvement Act
Jurisdiction
US Congress
Session
119th Congress (2025-2026)
Last updated at
Jun 14, 2026, 3:08 AM
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Sign in to take action- Introduced
- Passed House
- Passed Senate
- To President
- Became Law
Bill overview
This bill, the New Source Review Permitting Improvement Act, clarifies the definition of ‘modification’ and ‘construction’ under the Clean Air Act’s New Source Review (NSR) program. It states that a change to a stationary source is only considered a modification if the maximum hourly emission rate after the change is higher than it was before. Certain changes designed to reduce emissions, improve reliability, or enhance safety are specifically excluded from this definition, unless they would cause environmental harm. The bill also clarifies how these definitions apply to major emitting facilities and nonattainment areas.
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