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H.R. 161 119th Congress House

New Source Review Permitting Improvement Act

Official title: To amend sections 111, 169, and 171 of the Clean Air Act to clarify when a physical change in, or change in the method of operation of, a stationary source con… Show full official titleShow less

Official title: To amend sections 111, 169, and 171 of the Clean Air Act to clarify when a physical change in, or change in the method of operation of, a stationary source constitutes a modification or construction, and for other purposes.

Introduced: January 3, 2025 Introduced by: H. Morgan Griffith Republican · Virginia See on congress.gov
Environmental Protection Air qualityBuilding constructionEnvironmental assessment, monitoring, researchEnvironmental regulatory procedures
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 Everywhere this bill has been 9 steps
Introduced
In committee
Reported out
Passed House
Passed Senate
To President
Became law
Apr 28, 2026
Placed on the Union Calendar, Calendar No. 542.
Apr 28, 2026
Reported (Amended) by the Committee on Energy and Commerce. H. Rept. 119-625.
Jan 21, 2026
Ordered to be Reported (Amended) by the Yeas and Nays: 28 - 23.
Jan 21, 2026
Committee Consideration and Mark-up Session Held
Dec 10, 2025
Forwarded by Subcommittee to Full Committee by the Yeas and Nays: 12 - 11.
Dec 10, 2025
Subcommittee Consideration and Mark-up Session Held
Jan 3, 2025
Referred to the House Committee on Energy and Commerce.
Jan 3, 2025
Referred to the Subcommittee on Environment.
Jan 3, 2025
Introduced in House
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What's happening now April 28, 2026

Placed on the Union Calendar, Calendar No. 542.

 Plain-English summary Congressional Research Service

New Source Review Permitting Improvement Act

This bill modifies terminology for purposes of the New Source Review (NSR) permitting program of the Environmental Protection Agency (EPA).

In order for a change to a stationary source to be a modification (a change to a stationary source that increases the air pollutant emissions or results in new pollutants) for purposes of the NSR permitting program, the maximum hourly emission rate achievable by such source must be higher than the maximum hourly rate achievable by such source during any hour in the 10-year period preceding the change.

A change at a stationary source is not considered to be a modification under the bill if it is designed to (1) reduce the amount of any air pollutant emitted; or (2) restore, maintain, or improve the reliability of operations at, or safety of, the source. However, such changes are not excepted if the EPA determines the increase in the maximum achievable hourly emission rate from such change would cause an adverse effect on human health or the environment.

Construction, in connection with a major emitting facility (a type of stationary source), does not include a change at such a facility that does not result in a significant emissions increase or a significant net emissions increase.

In relation to major emitting facilities in nonattainment areas, the terms modifications and modified do not include changes at such facilities that do not result in a significant emissions increase or a significant net emissions increase.

 Hearings & markups 3
 Related & companion bills 1
  • S 5363 New Source Review Permitting Improvement Act
 Bill text 2 versions

Source documents hosted by congress.gov.

 Committees of jurisdiction 2
 Lobbying activity 132

Registered lobbyists who named this bill in their disclosure filings. Source: federal Lobbying Disclosure Act filings.

Bodies those filers lobbied

A filing lists the bills it worked on and the parts of government it contacted in separate sections, so these are the bodies those filers named anywhere in the filing, not a per-bill breakdown.

See all 132 filings →
 Cosponsors 21
All 21 Republican 21
R
Walberg, Tim
Michigan · Apr 9, 2026
 R
Crawford, Eric A. "Rick"
Arkansas · Apr 6, 2026
 R
Stauber, Pete
Minnesota · Apr 2, 2026
 R
Allen, Rick W.
Georgia · Mar 16, 2026
 R
McGuire, John J.
Virginia · Mar 9, 2026
 R
Williams, Roger
Texas · Feb 25, 2026
 R
Harshbarger, Diana
Tennessee · Feb 20, 2026
 R
Miller, Carol D.
West Virginia · Feb 20, 2026
 R
Moore, Barry
Alabama · Feb 20, 2026
 R
Weber, Randy K. Sr.
Texas · Feb 20, 2026
 R
Bost, Mike
Illinois · Feb 13, 2026
 R
Grothman, Glenn
Wisconsin · Feb 13, 2026
 R
Houchin, Erin
Indiana · Feb 13, 2026
 R
Wittman, Robert J.
Virginia · Feb 13, 2026
 R
Edwards, Chuck
North Carolina · Feb 12, 2026
 R
Meuser, Daniel
Pennsylvania · Feb 12, 2026
 R
Palmer, Gary J.
Alabama · Feb 11, 2026
 R
Pfluger, August
Texas · Feb 11, 2026
 R
Boebert, Lauren
Colorado · Feb 10, 2026
 R
Ellzey, Jake
Texas · Feb 10, 2026
 R
Fedorchak, Julie
North Dakota · Nov 20, 2025
Cite this page click to expand
APA
U.S. Congress. (2026). H.R. 161: New Source Review Permitting Improvement Act. 119th Congress. Open America. https://openamerica.io/bill/119-HR-161/
MLA
"H.R. 161: New Source Review Permitting Improvement Act." 119th Congress, 2026, Open America, https://openamerica.io/bill/119-HR-161/.
Bluebook (legal)
H.R. 161, 119th Cong. (2026), https://openamerica.io/bill/119-HR-161/.
Markdown link
[H.R. 161: New Source Review Permitting Improvement Act](https://openamerica.io/bill/119-HR-161/)
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