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Rule2021-114542021-06-14

Revised Air Quality Designations for the 2015 Ozone National Ambient Air Quality Standards

Environmental Protection Agency

Abstract

This final action revises or affirms the initial air quality designations for 14 counties associated with seven nonattainment areas for the 2015 primary and secondary National Ambient Air Quality Standards (NAAQS) for ozone. In a July 10, 2020, decision, the District of Columbia Circuit Court remanded to the Environmental Protection Agency (EPA or Agency), but did not vacate, the April 30, 2018, designations for 16 counties associated with nine nonattainment areas located in seven states. In response, the EPA has re-evaluated the designations for the remanded counties by applying a uniform, nationwide analytical approach and interpretation of the designation provisions of the Clean Air Act (CAA) in considering the specific facts and circumstances of the areas using only data and information available at the time of the original designations. In this final action, the EPA is revising the designations and/or boundaries of 13 counties associated with six nonattainment areas in four states (Illinois, Indiana, Missouri, and Wisconsin) and is affirming the April 30, 2018, designation of one county associated with a nonattainment area in Michigan. The EPA is addressing the two additional remanded counties associated with two nonattainment areas in a separate Federal Register document.

Action & Dates

Action
Final rule.
Dates
The effective date of this rule is July 14, 2021.
Effective Date
2021-07-14

CFR References

Topics

Air pollution controlEnvironmental protectionWilderness areas

Document Excerpt

Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Environmental Protection Agency 40 CFR Part 81 [EPA-HQ-OAR-2017-0548; FRL-10019-90-OAR] RIN 2060-AV06 AGENCY: Environmental Protection Agency (EPA). ACTION: Final rule. SUMMARY: This final action revises or affirms the initial air quality designations for 14 counties associated with seven nonattainment areas for the 2015 primary and secondary National Ambient Air Quality Standards (NAAQS) for ozone. In a July 10, 2020, decision, the District of Columbia Circuit Court remanded to the Environmental Protection Agency (EPA or Agency), but did not vacate, the April 30, 2018, designations for 16 counties associated with nine nonattainment areas located in seven states. In response, the EPA has re-evaluated the designations for the remanded counties by applying a uniform, nationwide analytical approach and interpretation of the designation provisions of the Clean Air Act (CAA) in considering the specific facts and circumstances of the areas using only data and information available at the time of the original designations. In this final action, the EPA is revising the designations and/or boundaries of 13 counties associated with six nonattainment areas in four states (Illinois, Indiana, Missouri, and Wisconsin) and is affirming the April 30, 2018, designation of one county associated with a nonattainment area in Michigan. The EPA is addressing the two additional remanded counties associated with two nonattainment areas in a separate Federal Register document. DATES: The effective da

Read full document on FederalRegister.gov →

Related Documents

Other Federal Register documents from the same docket.

Full Document

Citation: 86 FR 31438