Air Plan Approval; Missouri; Control of NOX Emissions From Large Stationary Internal Combustion Engines
What happened
The U.S. Environmental Protection Agency (EPA) finalized approval of revisions to Missouri's State Implementation Plan (SIP) concerning nitrogen oxide (NOx) emissions from large stationary internal combustion engines. These revisions, which include updated reporting and recordkeeping, new definitions, and an exemption for certain spark-ignited engines, are effective November 2, 2026. This action was signed by Donald Trump and is in accordance with the Clean Air Act.
Why it matters
This policy ensures that Missouri's updated rules for controlling air pollution from large engines meet federal Clean Air Act standards. The changes aim to streamline regulations and clarify requirements for facilities operating these engines, contributing to better air quality by controlling NOx emissions.
Who it affects
- ›U.S. Environmental Protection Agency (EPA)
- ›State of Missouri
- ›Facilities with large stationary internal combustion engines
- ›Residents of Missouri
The receipts are official. The summary is ours.
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