🌍EPA Proposes Delegation of NESHAP Authority to Oklahoma DEQ
The Oklahoma Department of Environmental Quality (ODEQ) has submitted updated regulations for receiving delegation and approval of its program for the implementation and enforcement of certain National Emission Standards for Hazardous Air Pollutants (NESHAP) for all sources, as provided for under previously approved delegation mechanisms. The updated State regulations incorporate by reference certain NESHAP promulgated by the Environmental Protection Agency (EPA), as they existed through June 30, 2023. The EPA is proposing to approve ODEQ's requested delegation update. The proposed delegation of authority under this action applies to sources located in certain areas of Indian country as discussed herein.
Learn More🌍Approval of Air Quality Plans for Oklahoma Incinerators
Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is notifying the public that we have received CAA section 111(d)/129 negative declarations from Oklahoma for existing incinerators subject to the Other Solid Waste Incineration units (OSWI), Hospital/Medical/ Infectious Waste Incinerator units (HMIWI), and Commercial and Industrial Solid Waste Incineration Units (CISWI) Emission Guidelines (EG). These negative declarations certify that existing incinerators subject to the OSWI, HMIWI, and CISWI EG and the requirements of sections 111(d) and 129 of the CAA do not exist within specified jurisdictions in Oklahoma. The EPA is proposing to accept the negative declarations and amend the agency regulations in accordance with the requirements of the CAA. In addition, EPA is withdrawing its prior proposed approval of the Oklahoma CISWI plan revision due to Oklahoma's submission of its negative declaration for incinerators subject to the CISWI EG and its withdrawal of the CISWI plan revision.
Learn More🌬️Mojave Desert Air Quality Regulation and Its Business Implications
The Environmental Protection Agency (EPA) is proposing to approve revisions to the Mojave Desert Air Quality Management District (MDAQMD or "the District") portion of the California State Implementation Plan (SIP). These revisions concern definitions that are necessary to implement and enforce local rules that regulate air pollution. We are proposing to approve a definitions rule under the Clean Air Act (CAA or the "Act"). We are also proposing to approve the rescission of earlier versions of this rule from the California SIP as they are no longer needed to under the CAA. We are taking comments on this proposal and plan to follow with a final action.
Learn More🏭Proposed Consent Decree for Trialco Aluminum Under Clean Air Act
The Department of Justice has proposed a Consent Decree resolving claims against Trialco Aluminum, LLC concerning hazardous air pollutant emissions from its Chicago Heights facility. The decree includes financial penalties and mandates compliance with updated operational standards, with opportunities for public comment before finalization.
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♻️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🌬️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🔥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🌍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🌬️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