♻️Revised Compliance Deadlines for Coke Oven Emission Standards
The U.S. Environmental Protection Agency (EPA) is taking interim final action on revisions to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for the Coke Oven Batteries (COB) source category and the Coke Ovens: Pushing, Quenching, and Battery Stacks (PQBS) source category by revising certain compliance deadlines for standards finalized in 2024. Specifically, the EPA is amending the compliance deadlines for certain 2024 revisions to the COB and PQBS NESHAPs from July 7, 2025 and January 6, 2026, to July 5, 2027. The EPA seeks comment on this final action and will respond to comments received and revise this final action as appropriate.
Learn More🌫️Ohio's Regional Haze Plan
The Environmental Protection Agency (EPA) is approving the Regional Haze State Implementation Plan (SIP) revision submitted by the Ohio Environmental Protection Agency (Ohio or Ohio EPA) on July 30, 2021, as supplemented on August 6, 2024, and clarified by Ohio on June 16, 2025, as satisfying applicable requirements under the Clean Air Act (CAA) and EPA's Regional Haze Rule for the program's second implementation period. Together, Ohio's 2021 SIP submission, 2024 SIP supplement, and 2025 clarification address the requirement that States must periodically revise their long-term strategies for making reasonable progress towards the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility, including regional haze, in mandatory Class I Federal areas. Ohio's complete SIP submission also addresses other applicable requirements for the second implementation period of the Regional Haze Program. EPA is taking this action pursuant to sections 110 and 169A of the CAA.
Learn More🌱Partial Waiver of 2024 Cellulosic Biofuel Requirement by EPA
EPA is partially waiving the 2024 cellulosic biofuel volume requirement and revising the associated percentage standard under the Renewable Fuel Standard (RFS) program due to a shortfall in cellulosic biofuel production. This action also makes a minor revision to the biogas provisions of the RFS program.
Learn More🌬️Proposed Amendments to Oklahoma NSPS Delegation by EPA
The Environmental Protection Agency (EPA) is proposing to update federal regulations to reflect Oklahoma's current New Source Performance Standards (NSPS) delegation status and the mailing address for the Oklahoma Department of Environmental Quality (ODEQ). The ODEQ has submitted updated regulations for the delegation of EPA authority for implementation and enforcement of certain NSPS. The updated State regulations incorporate by reference certain NSPS promulgated by EPA, as they existed through June 30, 2023. The delegation of authority for implementation and enforcement applies to sources subject to the delegated NSPS, including those located in certain areas of Indian country as discussed herein.
Learn More🌬️EPA Approves Revision to Florida's Air Quality Regulations
The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the Florida Department of Environmental Protection (FDEP) on August 15, 2023. The revision removes certain Clean Air Interstate Rule (CAIR)-related definitions, and CAIR-related portions of certain definitions, in the Stationary Sources--General Requirements chapter of the Florida SIP because they have become obsolete. EPA is approving these changes pursuant to the Clean Air Act (CAA or Act).
Learn More🌍EPA Proposes Air Quality Rule Affecting Connecticut Businesses
The Environmental Protection Agency (EPA) is proposing to approve State Implementation Plan (SIP) revisions submitted by the State of Connecticut. These SIP revisions relate to the 2008 8-Hour ozone National Ambient Air Quality Standards (NAAQS). The SIP revisions consist of the following: 2014 and 2017 calendar year periodic emissions inventories. This action is being taken under the Clean Air Act.
Learn More🔥Proposed Revisions to Oklahoma Open Burning Regulations
Pursuant to the Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is proposing to approve revisions to the State Implementation Plan (SIP) for Oklahoma submitted by the State of Oklahoma on November 25, 2024. The submittal addresses updates to the Oklahoma SIP, specifically, Oklahoma Administrative Code (OAC) Title 252 Chapter 100 Subchapter 13, Open Burning.
Learn More🌬️Air Quality Regulation Impacts on California Businesses and Compliance
Under the Clean Air Act, the Environmental Protection Agency (EPA) is taking another action in a series of actions to revise the format of the former "Identification of plan" section for the California State Implementation Plan (SIP). Specifically, the EPA is adding the nonregulatory provisions and quasi-regulatory measures to the "Identification of plan--in part" section that the EPA established to provide for the phased transition of the California SIP to the revised format. The nonregulatory provisions and quasi- regulatory measures affected by this format revision have been previously submitted by the State of California and approved by the EPA. This action is the third in a series of actions intended to change the format for the entire California SIP.
Learn More🌫️Louisiana Air Plan Approval for Interstate Transport of SO2 NAAQS
Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving the portion of the State Implementation Plan (SIP) submittal from the State of Louisiana demonstrating that the State satisfies the interstate transport requirements of section 110(a)(2)(D)(i)(I), also known as the "good neighbor" provision of the CAA, for the 2010 1-hour sulfur dioxide (SO<INF>2</INF>) primary National Ambient Air Quality Standard (NAAQS). The good neighbor provision requires each State's implementation plan to include adequate provisions prohibiting the interstate transport of air pollution in amounts that will contribute significantly to nonattainment, or interfere with maintenance, of a NAAQS in any other State.
Learn More🌫️EPA Approves West Virginia's Regional Haze State Implementation Plan
The Environmental Protection Agency (EPA) is approving the regional haze State implementation plan (SIP) revision submitted by West Virginia (West Virginia, WV, or the State) on August 12, 2022, to address applicable requirements under the Clean Air Act (CAA) and the EPA's Regional Haze Rule (RHR) for the regional haze program's second implementation period. The EPA is taking this action pursuant to the CAA.
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