Environmental Protection Agency
In response to a court decision, the Environmental Protection Agency (EPA) is correcting our July 22, 2020 final action erroneously granting a Clean Air Act (CAA) section 188(e) attainment date extension for the 2006 24-hour fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS or "standards") in the San Joaquin Valley from December 31, 2019, to December 31, 2024, and is now denying California's extension request. The EPA is also finalizing our determination that the San Joaquin Valley nonattainment area failed to attain the 2006 24-hour PM<INF>2.5</INF> NAAQS by the December 31, 2019 unextended attainment date. This determination is based on monitored air quality data from 2017 through 2019. As a result of this final determination, the State of California will be required to submit a revision to the California state implementation plan (SIP) that, among other elements, provides for expeditious attainment of the 2006 24-hour PM<INF>2.5</INF> NAAQS and for a five percent annual reduction in emissions of direct PM<INF>2.5</INF> or a PM<INF>2.5</INF> plan precursor pollutant.
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 52 [EPA-R09-OAR-2026-1257; FRL-13247-02-R9] AGENCY: Environmental Protection Agency (EPA). ( printed page 35419) ACTION: Final rule. SUMMARY: In response to a court decision, the Environmental Protection Agency (EPA) is correcting our July 22, 2020 final action erroneously granting a Clean Air Act (CAA) section 188(e) attainment date extension for the 2006 24-hour fine particulate matter (PM 2.5 ) national ambient air quality standards (NAAQS or “standards”) in the San Joaquin Valley from December 31, 2019, to December 31, 2024, and is now denying California's extension request. The EPA is also finalizing our determination that the San Joaquin Valley nonattainment area failed to attain the 2006 24-hour PM 2.5 NAAQS by the December 31, 2019 unextended attainment date. This determination is based on monitored air quality data from 2017 through 2019. As a result of this final determination, the State of California will be required to submit a revision to the California state implementation plan (SIP) that, among other elements, provides for expeditious attainment of the 2006 24-hour PM 2.5 NAAQS and for a five percent annual reduction in emissions of direct PM 2.5 or a PM 2.5 plan precursor pollutant. DATES: This rule is effective July 13, 2026. ADDRESSES: The EPA has established a docket for this action under Docket ID No. EPA-R09-OAR-2026-1257. All documents in the docket are listed on the https://www.regulations.gov webs…
Other Federal Register documents from the same docket.
Citation: 91 FR 35418
