Medium urgency

Air Quality State Implementation Plans; Approvals and Promulgations: Illinois; 2015 Ozone Moderate and Serious Reasonably Available Control Technology Update

Detected August 5, 2026 · in Environmental & Emissions Compliance (EPA)

EPA approves Illinois' update to its ozone Reasonably Available Control Technology (RACT) plan for the 2015 ozone standard, covering moderate and serious nonattainment areas.

Aforeworn detected this change in the Environmental & Emissions Compliance (EPA) space on August 5, 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 sources in Illinois subject to RACT requirements for ozone. should confirm how it applies to their specific situation before acting. There is a time constraint attached: Not specified in the excerpt; check the final rule for effective date and compliance deadlines.. 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 approval makes the state's RACT updates effective, potentially requiring affected facilities to implement new or revised emission control measures.

Who it affects

Manufacturers, power generators, chemical processors, and other sources in Illinois subject to RACT requirements for ozone.

What you must do

Review the approved Illinois SIP update to determine if your facility is subject to new or revised RACT requirements and ensure compliance with any new emission limits or work practices.

Deadline

Not specified in the excerpt; check the final rule for effective date and compliance deadlines.

Source: https://www.federalregister.gov/public-inspection/2026-16001/air-quality-state-implementation-plans-approvals-and-promulgations-illinois-2015-ozone-moderate-and

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