To amend section 111 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, and for other purposes.
Forwarded by Subcommittee to Full Committee (Amended) by the Yeas and Nays: 13 - 9 .
Congressional Research Service
Official summary
Version 00 · Introduced in House · Jun 29, 2017
This bill amends the Clean Air Act to provide that a modification of a stationary source results in an increase in air pollution only when the maximum achievable hourly emissions rate from the source is higher than: (1) the rate of the source as it was originally designed, and (2) the rate that was actually achieved during the 10 years before the change.
Source last updated: Apr 7, 2025. Consult Congress.gov for the current record.
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