Air Plan Approval; Illinois; 2015 Ozone Moderate and Serious Reasonably Available Control Technology Update
EPA proposes approving Illinois' 2015 Ozone Moderate and Serious RACT updates to 35 IAC parts 217, 218, and 219, which may impose new control requirements on certain emissions sources.
Aforeworn detected this change in the Environmental & Emissions Compliance (EPA) space on August 6, 2026 and published this briefing so affected operators are forewarned rather than caught off guard. It is rated Medium urgency. Manufacturers, power generators, chemical processors, and other facilities in Illinois subject to RACT for ozone nonattainment areas. should confirm how it applies to their specific situation before acting. There is a time constraint attached: Comments are due 30 days after publication in the Federal Register (publication date: August 6, 2026; comments due by September 8, 2026).. Acting after that point can mean penalties, a lapsed licence, or lost eligibility — exactly the kind of surprise Aforeworn exists to prevent. Aforeworn monitors Environmental & Emissions Compliance (EPA) continuously and turns every detected change into a plain-English briefing like this one, so you always know first. Forewarned is forearmed.
What changed
The EPA is proposing to approve state rule revisions that update RACT requirements for ozone moderate and serious nonattainment areas, potentially tightening emissions control obligations.
Who it affects
Manufacturers, power generators, chemical processors, and other facilities in Illinois subject to RACT for ozone nonattainment areas.
What you must do
Review the proposed rule and assess whether your facility's current emissions controls meet the updated RACT requirements; comment on the proposal if needed.
Deadline
Comments are due 30 days after publication in the Federal Register (publication date: August 6, 2026; comments due by September 8, 2026).
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