Articles tagged: environmental-protection-agency

Open for Comment: Attainment Date Extension for the San Joaquin Valley, California 2012 Annual PM2.5 Fine Particulate Matter Nonattainment Area

Environmental Protection Agency — The Environmental Protection Agency (EPA) is proposing to grant an extension of the applicable "Serious" area attainment date for the San Joaquin Valley nonattainment area for the 2012 annual fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS or "standards") from December 31, 2025, to December 31, 2030, based on a proposed determination that the State has satisfied the statutory criteria for this extension. The EPA will accept comments on this proposed rulemaking during a 30-day public comment period. (32 days remaining)

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Open for Comment: Attainment Date Extension for the South Coast, California 2012 Annual PM2.5 Fine Particulate Matter Nonattainment Area

Environmental Protection Agency — The Environmental Protection Agency (EPA) is proposing to grant an extension of the "Serious" area attainment date for the Los Angeles-South Coast Air Basin ("South Coast") nonattainment area for the 2012 annual fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS or "standards") from December 31, 2025, to December 31, 2030, based on a proposed determination that the State has satisfied the statutory criteria for this extension. The EPA will accept comments on this proposed rule during a 30-day public comment period. (32 days remaining)

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Open for Comment: Air Plan Approval; Ohio; Removal of Air Nuisance Rule

Environmental Protection Agency — The Environmental Protection Agency (EPA) is proposing to act in accordance with Ohio EPA's November 14, 2025, request to remove the air pollution nuisance rule (ANR) from the Ohio State Implementation Plan (SIP). The EPA is proposing to find that the Ohio SIP contains adequate control requirements and enforcement measures to maintain air quality in the State without the ANR. This proposed action will not interfere with the National Ambient Air Quality Standards (NAAQS) and meets all applicable requirements under the Clean Air Act (CAA). (32 days remaining)

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Open for Comment: Air Plan Approval; SC; Department Name Change

Environmental Protection Agency — The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of South Carolina on July 23, 2025. The proposed revision updates all references to reflect the restructuring of South Carolina Department of Health and Environmental Control (DHEC) to the South Carolina Department of Public Health and the South Carolina Department of Environmental Services (DES). (32 days remaining)

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Open for Comment: National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review Reconsideration; Extension of Comment Period

Environmental Protection Agency — On March 17, 2026, the U.S. Environmental Protection Agency (EPA) proposed a rule titled "National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review Reconsideration." The EPA is extending the comment period on this proposed rule, which is scheduled to close on May 1, 2026. The comment period will now end on May 15, 2026, to allow additional time for stakeholders to review and comment on the proposal. (14 days remaining)

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Open for Comment: Utah; Northern Wasatch Front; 2015 8-Hour Ozone National Ambient Air Quality Standards; Reconsideration and Repeal of Finding of Failure To Attain and Reclassification to a Serious Nonattainment Area; Determination of Attainment by the Moderate Attainment Date But for International Emissions

Environmental Protection Agency — The U.S. Environmental Protection Agency (EPA) is proposing to repeal the December 9, 2024, final rule in which the Agency determined that the Northern Wasatch Front (NWF) nonattainment area (NAA) in Utah failed to attain the Clean Air Act (CAA) 2015 ozone National Ambient Air Quality Standards (NAAQS) by the August 3, 2024, Moderate area attainment date, and reclassified the area by operation of law to Serious nonattainment (the "December 2024 Final Rule"). The EPA is also proposing to determine that the NWF ozone NAA would have attained the 2015 ozone NAAQS by the Moderate area attainment date but for emissions emanating from outside the United States (U.S.). If the EPA finalizes this proposed action, the NWF ozone NAA would no longer be subject to the CAA requirements pertaining to reclassification to Serious nonattainment upon failure to attain and would remain classified as Moderate for the 2015 ozone NAAQS. (30 days remaining)

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Open for Comment: Air Plan Approval; Delaware; Excess Emissions Provisions Pertaining to Periods of Startup, Shutdown and Malfunction Events

Environmental Protection Agency — The Environmental Protection Agency (EPA) is proposing to approve revisions to the state implementation plan (SIP) for three state regulations submitted by the State of Delaware through the Delaware Department of Natural Resources and Environmental Control (DNREC) on February 3, 2025. The proposed 2025 revisions to the SIP amend certain startup and shutdown provisions in a manner that avoids the deficiencies that the EPA identified in a disapproval action dated October 23, 2023, in which the Agency disapproved portions of a prior SIP revision dated November 22, 2016. This action is being taken under section 110 of the Clean Air Act (CAA). (30 days remaining)

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Open for Comment: Air Plan Approval; Maryland; Reasonably Available Control Technology for Municipal Waste Combustors

Environmental Protection Agency — The Environmental Protection Agency (EPA) is proposing to approve state implementation plan (SIP) revisions submitted by the State of Maryland. The SIP revisions consist of regulations that implement statewide reasonably available control technology (RACT) requirements by limiting air emissions of oxides of nitrogen (NO<INF>X</INF>) from municipal waste combustors (MWCs) in Maryland. This action is being taken under the Clean Air Act (CAA). (29 days remaining)

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Open for Comment: Significant New Use Rules on Certain Chemical Substances (26-2)

Environmental Protection Agency — EPA is issuing significant new use rules (SNURs) under the Toxic Substances Control Act (TSCA) for certain chemical substances that were the subject of premanufacture notices (PMNs) and are also subject to an Order issued by EPA pursuant to TSCA. The SNURs require persons to notify EPA at least 90 days before commencing the manufacture (defined by statute to include import) or processing of any of these chemical substances for an activity that is designated as a significant new use in the SNUR. The required notification initiates EPA's evaluation of the conditions of that use for that chemical substance. In addition, the manufacture or processing for the significant new use may not commence until EPA has conducted a review of the required notification; made an appropriate determination regarding that notification; and taken such actions as required by that determination. (31 days remaining)

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Open for Comment: Utah; Uinta Basin; 2015 8-Hour Ozone National Ambient Air Quality Standard; Reconsideration and Repeal of Finding of Failure To Attain and Reclassification to a Moderate Nonattainment Area; Extension of the Attainment Date and Determination of Attainment by the Marginal Attainment Date

Environmental Protection Agency — The U.S. Environmental Protection Agency (EPA or Agency) is proposing to repeal the December 16, 2024 final rule in which we denied a request by the State of Utah (State) and the Ute Indian Tribe of the Uintah and Ouray Reservation (Ute Indian Tribe or Tribe) for an extension of the attainment date for the Uinta Basin (UB), Utah Marginal nonattainment area (NAA) under the 2015 ozone National Ambient Air Quality Standard (NAAQS), determined that the area failed to attain the Clean Air Act (CAA) 2015 ozone NAAQS by the applicable Marginal attainment date of August 3, 2022, and reclassified the area by operation of law to a Moderate ozone NAA. The EPA is also reproposing to grant the second 1-year extension of the Marginal attainment date from August 3, 2022 to August 3, 2023 and to determine that the area attained the 2015 ozone NAAQS based on certified ozone monitoring data from 2020-2022. If we finalize this proposed action, the UB area would no longer be subject to the CAA requirements pertaining to reclassification upon failure to attain and therefore would remain classified as a Marginal NAA for the 2015 ozone NAAQS. (33 days remaining)

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Open for Comment: Hazardous Waste Management System; Identification and Listing of Hazardous Waste; Correction

Environmental Protection Agency — On March 26, 2026, the Environmental Protection Agency (EPA) published a Federal Register document proposing to grant an exclusion from the list of hazardous waste to WRB Refining LP located in Borger, Texas. The proposed rule had an incorrect docket number. This action informs the public of the correct docket number. The EPA is also extending the comment period for the proposed rule by 22 days to May 20, 2026. (27 days remaining)

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Open for Comment: Air Plan Approval; Michigan; 2015 Ozone Moderate Reasonably Available Control Technology

Environmental Protection Agency — The Environmental Protection Agency (EPA) is reopening the comment period for a proposed rule published February 27, 2026. Comments on the proposed rule were required to be received on or before March 30, 2026. In response to a request in a public comment, the EPA is reopening the comment period for the proposed action for 30 days. (33 days remaining)

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Open for Comment: Air Plan Approval; Missouri; Control of Emissions During Petroleum Liquid Storage, Loading, and Transfer

Environmental Protection Agency — The Environmental Protection Agency (EPA) is proposing to approve revisions to the Missouri State Implementation Plan (SIP) related to the control of emissions during petroleum liquid storage, loading and transfer in the St. Louis area. The revisions to this rule include revising the tank size threshold applicability of the rule, adding incorporations by reference to other state rules, adding definitions specific to the rule, revising unnecessarily restrictive or duplicative language, adding a streamlined process for modifications to vapor recovery systems at gasoline dispensing facilities and thereby eliminating the associated permitting requirement, and clarifying rule language on testing and reporting. The revisions make this provision consistent with a similar rule that is applicable to the Kansas City area and regulates the same type of facilities. These revisions do not interfere with the State's ability to attain or maintain the National Ambient Air Quality Standards (NAAQS). The EPA's proposed approval of this rule revision is being done in accordance with the requirements of the Clean Air Act (CAA). (33 days remaining)

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Open for Comment: Kentucky; Approval and Promulgation of State Plan for Designated Facilities and Pollutants; Control of Emissions From Existing Municipal Solid Waste Landfills

Environmental Protection Agency — The Environmental Protection Agency (EPA) is proposing to approve the Clean Air Act (CAA or Act) section 111(d) State Plan submitted by the Commonwealth of Kentucky (Commonwealth) through the Kentucky Energy and Environment Cabinet (Cabinet) via a letter dated June 11, 2024, for implementing and enforcing the Emissions Guidelines (EG) and Compliance Times applicable to existing municipal solid waste (MSW) landfills (hereinafter "State Plan" or "MSW Landfill State Plan"). The State Plan provides for implementation and enforcement of the EG, as finalized by EPA on August 29, 2016, applicable to existing MSW landfills that commenced construction, modification, or reconstruction on or before July 17, 2014. The State Plan establishes emission limits, monitoring, operating, recordkeeping, and reporting requirements for affected MSW landfills. (33 days remaining)

comment-period comment-period regulation environmental-protection-agency

Open for Comment: National Emission Standards for Hazardous Air Pollutants: Crude Oil and Natural Gas Production Facilities and Natural Gas Transmission and Storage Facilities; Technology Review and Reconsideration

Environmental Protection Agency — The U.S. Environmental Protection Agency (EPA) is proposing an action related to the National Emission Standards for Hazardous Air Pollutants (NESHAP) from Crude Oil and Natural Gas Production Facilities and from Natural Gas Transmission and Storage Facilities (Oil and Gas NESHAP) in connection with a technology review pursuant to Clean Air Act (CAA) section 112. Based on the EPA's review the Agency is not proposing any revision to the current standards in the NESHAP. With respect to unregulated pollutants, the EPA is proposing standards for methanol from regulated emission points at crude oil and natural gas production facilities that will result in no additional control requirements. The EPA is further proposing two alternative approaches to emission points not currently regulated in these NESHAP. Under the first approach, we are proposing that the Agency does not have an obligation to regulate previously unregulated emission points when conducting a CAA section 112(d)(6) review and to defer action on that basis. Under the second approach, we are proposing new control standards for previously unregulated emission points, which include: acid gas removal units, transport vessel loading operations, and storage vessels without flash emissions at crude oil and natural gas production facilities, as well as storage vessels, transport vessel loading and natural gas-driven process controllers and pumps at natural gas transmission and storage facilities. The EPA is also concurrently proposing changes to the definition of "associated equipment" with respect to a major source to align with the CAA that, if finalized, would reduce burdens on industry. Finally, the EPA is proposing minor technical corrections to the existing regulations. (60 days remaining)

comment-period comment-period regulation environmental-protection-agency

Open for Comment: Air Plan Revisions; Arizona; Maricopa County Air Quality Department; New Source Review; Emission Reduction Credits

Environmental Protection Agency — The Environmental Protection Agency (EPA) is proposing to approve a revision to the Maricopa County Air Quality Department (MCAQD or "Department") portion of the Arizona State Implementation Plan (SIP). This revision establishes a federally enforceable program allowing fleet owners/operators to generate emission reduction credits (ERCs) by either retrofitting or replacing existing fleet vehicles with lower emitting vehicles while meeting other Clean Air Act (CAA or "Act") requirements. These ERCs are intended for use as offsets for major stationary sources under the Department's Nonattainment New Source Review (NNSR) program. We are proposing to approve a local rule to allow for the generation of ERCs through voluntary on-road mobile source emission reductions under the CAA. We are taking comments on this proposal and plan to follow with a final action. (31 days remaining)

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Open for Comment: Update to EPAAR Text of Provisions and Clauses, Signing of Uniform Hazardous Wastes Manifests

Environmental Protection Agency — The Environmental Protection Agency (EPA) is proposing a new EPAAR, Provision and Clause in Solicitation Provisions and Contract Clauses, and Environmental, Conservation, Occupational Safety, and Drug-Free Workplace. The EPA currently has a local clause, which involves the signing of Uniform Hazardous Waste Manifests for Superfund sites. The new clause will enable contractors to sign the Waste Manifest at EPA worksites for the removal of hazardous and non- hazardous materials at both Superfund and non-Superfund sites. The addition of the new clause will allow work to continue when EPA personnel are not present at the worksite. (61 days remaining)

comment-period comment-period regulation environmental-protection-agency

Open for Comment: Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New Alternatives Policy Program in Refrigeration and Air Conditioning and Fire Suppression; Supplemental Notice of Proposed Rulemaking

Environmental Protection Agency — Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program, this action proposes to list the refrigerant 2,3,3,3-tetrafluoropropene, also known as HFO- 1234yf, as acceptable, subject to use conditions, in the motor vehicle air conditioning end-use for retrofit of heavy-duty pickup trucks and complete heavy-duty vans. This action supplements the Agency's November 10, 2025, proposal with respect to the proposed listings in the motor vehicle air conditioning end-use for retrofit of heavy-duty pickup trucks and heavy-duty vans (both complete and incomplete vans). The EPA is also supplementing that proposal to clarify the intended scope of that proposed rule. The EPA is providing an opportunity for public comment on the additional listing and the clarification. The EPA is not reopening the comment period for any portions of the November 10, 2025, proposal which are not explicitly addressed in this supplemental proposal. (29 days remaining)

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Open for Comment: Drinking Water Contaminant Candidate List 6-Draft

Environmental Protection Agency — The U.S. Environmental Protection Agency (EPA) is publishing a draft list of contaminants that are currently not subject to any proposed or promulgated national primary drinking water regulations for public review and comment. These contaminants are known or anticipated to occur in public water systems and may require regulation under the Safe Drinking Water Act (SDWA) in the future. The draft list provided in this document is the sixth Contaminant Candidate List (CCL) published by the Agency since the SDWA amendments of 1996. The draft Sixth Contaminant Candidate List (CCL 6 or the list) includes 75 chemicals, 4 chemical groups (disinfection byproducts (DBPs), microplastics, per- and polyfluoroalkyl substances (PFAS), and pharmaceuticals) and 9 microbes. The EPA seeks public comment on the draft CCL 6 and the process used to develop the draft CCL 6. The EPA will consider all information and comments received in response to this notice of availability for determining the final CCL 6. (59 days remaining)

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Open for Comment: Approval and Promulgation of State Air Quality Plans for Designated Facilities and Pollutants; Louisiana; Control of Emissions From Existing Other Solid Waste Incineration Units

Environmental Protection Agency — Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is notifying the public that we have received a CAA section 111(d)/129 negative declaration from Louisiana for existing incinerators subject to the Other Solid Waste Incineration units (OSWI) Emission Guidelines (EG). This negative declaration certifies that existing incinerators subject to the OSWI EG and the requirements of sections 111(d) and 129 of the CAA do not exist within specified jurisdictions in Louisiana. The EPA is proposing to accept the negative declaration and amend the agency regulations in accordance with the requirements of the CAA. (28 days remaining)

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