Bill quietly exempts major polluters from Clean Air Act oversight
S. 5363 — New Source Review Permitting Improvement Act · Filed by Jon Husted (R-OH) · 1 cosponsor · Introduced Aug 7, 2026 · Referred to committee
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What it does
This bill narrows the definition of what counts as a 'modification' or 'construction' under the Clean Air Act's New Source Review (NSR) program. It allows industrial facilities to make changes—including those that increase pollution—without triggering expensive permitting and pollution-control requirements, as long as the facility can claim the change is for efficiency, safety, reliability, or pollution reduction per unit of output. The bill effectively shields major polluters from NSR oversight by redefining when their operational changes require new environmental permits.
Why we flagged it
The bill's operative mechanism is to exempt industrial facilities from Clean Air Act permitting requirements by narrowing the definition of 'modification' and 'construction.' The title frames this as a 'permitting improvement,' but the actual effect is to allow major emitters to increase pollution without triggering NSR oversight.
What the text implies
- The 'maximum hourly emission rate' test allows facilities to increase total annual emissions without triggering NSR, because the bill measures only peak hourly rates, not cumulative pollution. A facility could run dirtier for 8,000 hours per year without crossing the hourly threshold.
- The 'per unit of production' carve-out creates a loophole: a facility can claim efficiency gains while actually increasing total emissions if production increases. The bill does not require net emissions reductions, only reductions per unit output.
The full analysis lists 5 implications of this text.
Who stands to gain
petroleum refineries; coal-fired power plants; natural gas utilities