H.R. 161 Congress 119 session

New Source Review Permitting Improvement Act

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.

Status

  1. Introduced
  2. Committee
  3. Floor vote
  4. Passed
  5. Enacted

Awaiting a floor vote — last recorded action April 28, 2026

Placed on the Union Calendar, Calendar No. 542.

Passage likelihood

23% Lower than most bills at this stage

This is an estimate, not a guarantee. It is computed from the signals listed below and nothing else. It does not account for leadership priorities, floor scheduling, or negotiations that are not in the public record.

What the estimate is based on

  • Historical base rate About 4% of introduced federal bills are enacted.
  • Current stage Scheduled for or awaiting a floor vote.
  • Cosponsors 21 cosponsors.

State-level impact

State-level impact data is not available for this bill. The source text does not contain a per-state funding formula or scored breakdown, so no figures are shown.

Official actions

  1. Placed on the Union Calendar, Calendar No. 542.
  2. Reported (Amended) by the Committee on Energy and Commerce. H. Rept. 119-625.
  3. Reported (Amended) by the Committee on Energy and Commerce. H. Rept. 119-625.
  4. Ordered to be Reported (Amended) by the Yeas and Nays: 28 - 23.
  5. Committee Consideration and Mark-up Session Held
  6. Forwarded by Subcommittee to Full Committee by the Yeas and Nays: 12 - 11.
  7. Subcommittee Consideration and Mark-up Session Held
  8. Referred to the House Committee on Energy and Commerce.
  9. Referred to the Subcommittee on Environment.
  10. Introduced in House
  11. Introduced in House
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