Environmental Protection Agency
The U.S. Environmental Protection Agency (EPA or "Agency") is taking final action to approve a revision to the State of California's state implementation plan (SIP) for the San Joaquin Valley (SJV) area. The revision includes an update to the SJV area's motor vehicle emissions budgets ("budgets") for nitrogen oxides (NO<INF>X</INF>) and volatile organic compounds (VOC) for the 2008 8- hour ozone national ambient air quality standards (NAAQS or "standards"). These updated budgets for 2026, 2029, and 2031 were developed with the latest modeling method approved for California. These updated budgets apply to all subareas within the SJV. Upon the effective date of this rule, the updated budgets will supersede the existing approved SJV subarea budgets for the 2008 ozone NAAQS that were based on an earlier emissions model. The EPA is approving the updated SJV ozone budgets in accordance with the requirements of the Clean Air Act (CAA or "Act") and the EPA's regulations.
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-2026-3400; FRL-13355-02-R9] AGENCY: Environmental Protection Agency (EPA). ACTION: Final rule. SUMMARY: The U.S. Environmental Protection Agency (EPA or “Agency”) is taking final action to approve a revision to the State of California's state implementation plan (SIP) for the San Joaquin Valley (SJV) area. The revision includes an update to the SJV area's motor vehicle emissions budgets (“budgets”) for nitrogen oxides (NO X ) and volatile organic compounds (VOC) for the 2008 8-hour ozone national ambient air quality standards (NAAQS or “standards”). These updated budgets for 2026, 2029, and 2031 were developed with the latest modeling method approved for California. These updated budgets apply to all subareas within the SJV. Upon the effective date of this rule, the updated budgets will supersede the existing approved SJV subarea budgets for the 2008 ozone NAAQS that were based on an earlier ( printed page 58024) emissions model. The EPA is approving the updated SJV ozone budgets in accordance with the requirements of the Clean Air Act (CAA or “Act”) and the EPA's regulations. DATES: This rule is effective October 14, 2026. ADDRESSES: The EPA has established a docket for this action under Docket ID No. EPA-R09-OAR-2026-3400. All documents in the docket are listed on the https://www.regulations.gov website. Although listed in the index, some information is not publicly a…
Other Federal Register documents from the same docket.
Citation: 91 FR 58023
