Referred to the House Committee on Energy and Commerce.
Amends Clean Air Act definitions to change when a physical change or change in operation counts as a "modification" or "construction." Sets a 10-year hourly baseline for determining increases in maximum achievable hourly emissions, excludes certain efficiency, pollution-control, safety, and reliability projects from being treated as modifications (unless EPA finds an adverse health/environment effect), and clarifies that PSD and nonattainment modification tests focus on significant increases in annual actual emissions. Includes a rule preserving pre-enactment treatment for changes not previously treated as modifications.
Progressives stress environmental and public-health risks from narrowed NSR triggers
Relative to its intended legislative type, this bill is a clearly focused substantive policy change that amends core Clean Air Act definitions.
Amends Clean Air Act definitions to change when a physical change or change in operation counts as a "modification" or "construction." Sets a 10-year hourly baseline for determining increases in maximum achievable hourly emissions, excludes certain efficiency, pollution-control, safety, and reliability projects from being treated as modifications (unless EPA finds an adverse health/environment effect), and clarifies that PSD and nonattainment modification tests focus on significant increases in annual actual emissions.
Includes a rule preserving pre-enactment treatment for changes not previously treated as modifications.
Narrow statutory tweak favors industry but touches hot‑button environmental policy; passage likely only as part of broader compromise or with strong chamber alignment.
Relative to its intended legislative type, this bill is a clearly focused substantive policy change that amends core Clean Air Act definitions. It provides concrete statutory language (including a 10-year baseline and categorical exceptions) and is well integrated with existing statutory sections, but it leaves several operational and measurement details to agency interpretation and supplies no fiscal or implementation roadmap.
Progressives stress environmental and public-health risks from narrowed NSR triggers
These are examples from the analysis, not a ranked list of the most-affected groups.
Progressives stress environmental and public-health risks from narrowed NSR triggers
Views the bill as a regulatory rollback that narrows when projects trigger New Source Review permitting.
Concerned it will allow some projects to escape review and possibly worsen local air quality unless strictly constrained.
Sees practical value in clearer statutory definitions and in protecting safety/efficiency upgrades from needless permitting.
Worries about loopholes and implementation details that could undermine air quality, so would favor targeted safeguards and clear EPA guidance.
Likely supportive as it reduces regulatory burdens, provides clearer permitting thresholds, and protects investments in safety and efficiency.
Views the changes as pro-business and pro-investment while leaving EPA authority to block genuinely harmful changes.
Reached or meaningfully advanced
Reached or meaningfully advanced
Still ahead
Still ahead
Still ahead
Narrow statutory tweak favors industry but touches hot‑button environmental policy; passage likely only as part of broader compromise or with strong chamber alignment.
The bill has not accumulated any surfaced votes yet.
Progressives stress environmental and public-health risks from narrowed NSR triggers
Narrow statutory tweak favors industry but touches hot‑button environmental policy; passage likely only as part of broader compromise or wi…
Relative to its intended legislative type, this bill is a clearly focused substantive policy change that amends core Clean Air Act definitions. It provides concrete statutory language (including a 10-year baseline and c…
Go beyond the headline summary with full stakeholder mapping, legislative design analysis, passage barriers, and lens-by-lens tradeoff breakdowns.