Reference Source

Federal Register 2026-16514 — effective 2026-09-14 — Air Plan Approval; Illinois; Clean Data Determination for the Illinois Portion of the St. Louis Area for the 2015 Ozone Standard — Environmental Protection Agency

What is the effective date for Federal Register 2026-16514 — effective 2026-09-14 — Air Plan Approval; Illinois; Clean Data Determination for the Illinois Portion of the St. Louis Area for the 2015 Ozone Standard — Environmental Protection Agency?

For Federal Register 2026-16514, effective date is 2026-09-14; agency is Environmental Protection Agency; published is 2026-08-13; cfr parts amended is 40 CFR 52; dates, as printed is This final rule is effective on September 14, 2026, recorded from its source on 2026-08-31; source re-checked 2026-09-16.

{"document_number":"2026-16514","title":"Air Plan Approval; Illinois; Clean Data Determination for the Illinois Portion of the St. Louis Area for the 2015 Ozone Standard","agency_names":["Environmental Protection Agency"],"effective_on":"2026-09-14","dates":"This final rule is effective on September 14, 2026.","cfr_references":[{"chapter":null,"citation_url":null,"part":"52","title":40}],"publication_date":"2026-08-13","html_url":"https://www.federalregister.gov/documents/2026/08/13/2026-16514/air-plan-approval-illinois-clean-data-determination-for-the-illinois-portion-of-the-st-louis-area"}

federalregister.gov, retrieved 2026-08-31

FR document number
2026-16514 verified
Rule
Air Plan Approval; Illinois; Clean Data Determination for the Illinois Portion of the St. Louis Area for the 2015 Ozone Standard verified
Agency
Environmental Protection Agency verified
Effective date
2026-09-14 verified
DATES, as printed
This final rule is effective on September 14, 2026. verified
CFR parts amended
40 CFR 52 our reading
Published
2026-08-13 verified
Sourcefederalregister.gov
Verified
Review by
DatasetFederal rules taking effect: every US final rule in the Federal Register, by effective date

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

Source

Last verified against source: . Due for re-check by . This page as Markdown · OKF bundle · full dataset as JSON.

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