Environmental Protection Agency

This regulation establishes an exemption from the requirement of a tolerance for residues of 2-propenoic acid, 2-methyl-, telomer with 1-dodecanethiol, and 2-methyloxirane polymer with oxirane monoether with 1,2-propanediol mono(2-methyl-2-propenoate) (CAS Reg. No 1186225-21-7) when used as an inert ingredient in a pesticide chemical formulation. Spring Regulatory Sciences on behalf of Clariant Corporation submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of 2-propenoic acid, 2-methyl-, telomer with 1-dodecanethiol, and 2-methyloxirane polymer with oxirane monoether with 1,2-propanediol mono(2-methyl-2-propenoate) on food or feed commodities when used in accordance with these exemptions.

This regulation establishes an exemption from the requirement of a tolerance for residues of Bacillus thuringiensis eCry1Gb.1Ig protein in or on the food and feed commodities of corn, field; corn, sweet; and corn, pop when used as a plant-incorporated protectant (PIP) in corn. Syngenta Seeds, LLC submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA) requesting an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of eCry1Gb.1Ig protein under FFDCA when used in accordance with the terms of the exemption.

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Connecticut to address certain Federal requirements for the 2008 and 2015 8-hour ozone National Ambient Air Quality Standards (NAAQS) under the Clean Air Act (CAA). This revision approves a source-specific SIP revision for Algonquin Gas Transmission, LLC's Cromwell compressor station facility in Cromwell, CT, to address reasonably available control technology (RACT) determinations for major stationary sources of volatile organic compounds (VOC). The CAA requires states to submit SIP revisions addressing RACT requirements for ozone nonattainment areas classified as Moderate or higher and for any portion of the state located in an ozone transport region (OTR). RACT determinations are required for this source because it is located in the New York-Northern New Jersey-Long Island, NY-NJ-CT 2008 ozone Severe nonattainment area and 2015 ozone Serious nonattainment area and because Connecticut is in the OTR. The EPA is also approving a negative declaration for existing rubber tire manufacturing sources statewide. This action is being taken in accordance with the Clean Air Act.

The State of Alaska (Alaska or the State) has applied to the United States Environmental Protection Agency (the EPA or the Agency) for final authorization of its hazardous waste program under the Resource Conservation and Recovery Act, as amended (RCRA). The EPA has reviewed Alaska's application and has made a final determination that Alaska's hazardous waste program satisfies all requirements for final authorization. Thus, the EPA is granting final authorization for the State to operate its program subject to the limitations on its authority retained by the EPA in accordance with RCRA, including the Hazardous and Solid Waste Amendments of 1984 (HSWA). Alaska's program will operate in lieu of the Federal hazardous waste program in Alaska; however, the EPA will retain jurisdiction and authority to implement the Federal RCRA program in Indian country and areas of exclusive Federal jurisdiction in Alaska.

This regulation establishes tolerances for residues of isofetamid in or on nut, tree, group 14-12, and almond, hulls. Under the Federal Food, Drug, and Cosmetic Act (FFDCA) ISK Biosciences Corporation submitted a petition to EPA requesting that EPA establish a maximum permissible level for residues of this pesticide in or on the identified commodities.

This regulation establishes a tolerance for residues of permethrin (CASRN 52645-53-1) in or on the food and feed commodity of black pepper at 0.1 parts per million (ppm). Under the Federal Food, Drug, and Cosmetic Act (FFDCA), the American Spice Trade Association, Inc., submitted a petition to EPA requesting that EPA establish a maximum permissible level for residues of this pesticide in or on the identified commodity.

The Environmental Protection Agency (EPA) is updating the materials that are incorporated by reference (IBR) into the Rhode Island State Implementation Plan (SIP). The regulations affected by this update have been previously submitted by the State of Rhode Island and approved by the EPA. In this final rule, the EPA is also notifying the public of corrections and clarifying changes in the Code of Federal Regulations tables that identify the materials incorporated by reference into the Rhode Island SIP. This update affects the materials that are available for public inspection at the National Archives and Records Administration and the EPA Regional Office.

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the San Joaquin Valley Air Pollution Control District (SJVAPCD or "District") portion of the California State Implementation Plan (SIP) concerning two rules submitted to address section 185 of the Clean Air Act (CAA or the "Act") with respect to the 2008 and 2015 8-hour ozone National Ambient Air Quality Standards (NAAQS or "standards").

The Environmental Protection Agency (EPA) approves revisions to the State of New Hampshire's Clean Air Act (CAA) title V operating permit program. These revisions amend the definitions of "hazardous air pollutant" and "regulated air pollutant" in New Hampshire regulations to remain consistent with Federal permitting and air toxics requirements in accordance with the CAA.

The U.S. Environmental Protection Agency (EPA or Agency) is finalizing an extension of certain compliance dates applicable to certain entities subject to the risk-management rules for perchloroethylene (PCE) and carbon tetrachloride (CTC) under the Toxic Substances Control Act (TSCA). EPA is extending certain Workplace Chemical Protection Program (WCPP) compliance dates for non-federal owners and operators to match the existing compliance dates for federal agencies and their contractors. For both PCE and CTC, this action extends the compliance date for initial monitoring for inhalation exposure to June 21, 2027, and extends the compliance date to meet the existing chemical exposure limit (ECEL), establish a regulated area, institute a workplace information and training program, provide any required respiratory personal protective equipment (PPE), and establish a respiratory PPE program to September 20, 2027. For PCE, EPA is also extending the compliance date for federal entities to institute a workplace information and training program to September 20, 2027, and for non-federal entities to establish and implement an exposure control plan to December 20, 2027.

EPA issued a final rule in the Federal Register of June 30, 2026, establishing tolerances for residues of epyrifenacil (CASRN 353292-31-6) in or on multiple commodities requested by Valent U.S.A. LLC under the Federal Food, Drug, and Cosmetic Act (FFDCA). That document inadvertently issued incorrect tolerances for corn, field (forage, stover); wheat (forage, hay, straw); and soybean (forage, hay). This document corrects that final regulation.

EPA is issuing a significant new use rule (SNUR) under the Toxic Substances Control Act (TSCA) for a certain chemical substance that was the subject of a premanufacture notice (PMN) and is also subject to an Order issued by EPA pursuant to TSCA. The SNUR requires persons to notify EPA at least 90 days before commencing the manufacture (defined by statute to include import) or processing of this chemical substance 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.

The Environmental Protection Agency (EPA) is approving a Clean Air Act (CAA) operating permit program revision submitted by the State of Maine. This revision makes minor changes to Maine's operating permit program that are considered clarifications, that correct grammar, that codify longstanding practices, or that are necessary for the state to utilize an expected future electronic application system. The revisions also include provisions allowing the public comment period on a draft permit to run concurrently with the EPA's review of a proposed permit. The intended effect of this action is to approve Maine's revisions. This action is being taken in accordance with the Clean Air Act.

The Environmental Protection Agency (EPA) is taking final action 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, Missouri area and regulates the same type of facilities. The EPA's final approval of this rule revision is being done in accordance with the requirements of the CAA.

The U.S. Environmental Protection Agency (EPA) is making corrections to the New Source Performance Standards Review for Stationary Combustion Turbines and Stationary Gas Turbines final rule ("Final NSPS Rule") that published in the Federal Register (FR) on January 15, 2026, and became effective on January 15, 2026. After publication, the EPA identified inadvertent technical and typographical errors in the Federal Register regulatory text and is correcting those errors.

The Environmental Protection Agency (EPA) is taking direct final action to accept a negative declaration submitted by the Nebraska Department of Water, Energy, and Environment (NDWEE) to satisfy the emission guidelines and associated compliance times requirements for Commercial and Industrial Solid Waste Incineration (CISWI) units for the State of Nebraska. The negative declaration certifies that there are no existing sources within the jurisdiction of Nebraska that must comply with the rule. This action is being taken in accordance with the Clean Air Act (CAA) requirements for emission guidelines and state plans for existing sources.

The Environmental Protection Agency (EPA) is making an interim final determination (IFD) that Pennsylvania has submitted revisions to the state implementation plan (SIP) that satisfy the requirements under the Clean Air Act (CAA) to implement Reasonably Available Control Technology (RACT) for volatile organic compounds (VOC) Control Technique Guidelines (CTG) for the 2008 ozone national ambient air quality standards (NAAQS). The effect of this IFD is to stay emission offset sanctions and defer the imposition of highway funding sanctions triggered by an August 16, 2024 EPA disapproval of a prior Pennsylvania SIP addressing VOC CTG RACT requirements for the 2008 ozone NAAQS. This IFD is consistent with a proposed action, published elsewhere in this issue of the Federal Register, in which the EPA is proposing approval of revisions to Pennsylvania's SIP, as submitted on May 10, 2023, January 20, 2026, February 17, 2026 and April 10, 2026 to address VOC CTG RACT requirements for the 2008 and 2015 NAAQS.

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the Iowa State Implementation Plan (SIP) and the Operating Permit Program to incorporate recent changes to the Iowa Administrative Code (IAC). The revisions include removal of the Voluntary Operating Permit (VOP) Program language; removal of the Emission Reduction Program language; new and renumbered rules; replacement of duplicative language with references to state statute and federal regulations; updated definitions; consolidation of 14 chapters into 8 chapters; and minor clarifications to language and grammar. The EPA is also finalizing corrections to the erroneous incorporation of several rules into the Iowa SIP pursuant to the Clean Air Act (CAA). These revisions do not decrease the stringency of the SIP or have an adverse effect on air quality. The EPA's final approval of this rule revision is in accordance with the requirements of the CAA.

The U.S. Environmental Protection Agency (EPA or Agency) is approving the attainment plan and comprehensive emissions inventory for the Canton Nonattainment Area for the 2008 Lead (Pb) National Ambient Air Quality Standards (NAAQS) submitted by the Ohio Environmental Protection Agency (Ohio EPA or Ohio) on September 19, 2024. Additionally, the EPA is determining that the Canton Nonattainment Area has attained the 2008 Pb NAAQS and is approving Ohio's April 25, 2025, maintenance plan for continued attainment. With these approvals, the EPA is acting in accordance with Ohio's request to redesignate the Canton Nonattainment Area from nonattainment to attainment of the 2008 Pb NAAQS. The EPA is taking these actions in accordance with the Clean Air Act (CAA) and the Agency's implementation regulations regarding the 2008 Pb NAAQS. The EPA proposed these actions on March 27, 2026, with publication in the Federal Register on April 10, 2026, and we received no adverse comments.

The Environmental Protection Agency (EPA) is finalizing an approval of seven permitting rules as a revision to the Antelope Valley Air Quality Management District (AVAQMD or "District") portion of the California State Implementation Plan (SIP). These revisions concern the District's New Source Review (NSR) permitting program for new and modified sources of air pollution under part D of title I of the Clean Air Act (CAA or "Act"). The revised rules address deficiencies identified in a previous limited disapproval action, correct a newly identified deficiency for one permitting rule, and incorporate other revisions related to NSR requirements. This action updates the District's portion of the California SIP with the revised rules.

This regulation establishes exemptions from the requirement of a tolerance for residues of Bacteriophage active against Xanthomonas campestris pv. vesicatoria_EcoPhage and Bacteriophage active against Pseudomonas syringae pv. tomato_EcoPhage in or on all food or feed commodities. Under the Federal Food, Drug, and Cosmetic Act (FFDCA), EcoPhage Ltd. submitted a petition to EPA requesting exemptions from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of these pesticides when used in accordance with the terms of the exemptions.

The Environmental Protection Agency (EPA) is taking final action to redesignate the St. Clair nonattainment area in southeast Michigan to attainment for the 2010 sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS). The EPA is also approving Michigan's maintenance plan for the St. Clair SO<INF>2</INF> nonattainment area and emissions limits for the DTE Belle River Power Plant. Michigan submitted the request for approval of the St. Clair area redesignation and maintenance plan on December 14, 2023, with a supplement to the request on July 24, 2025. The EPA proposed to approve this action on April 10, 2026, and received no adverse comments.

The U.S. Environmental Protection Agency (EPA) is finalizing amendments to the national emissions standards for hazardous air pollutants (NESHAP) for the Plywood and Composite Wood Products (PCWP) source category. Specifically, the EPA is finalizing maximum achievable control technology (MACT) standards in the form of emission limitations and work practices as appropriate for total hazardous air pollutants (HAP) (including acetaldehyde, acrolein, formaldehyde, methanol, phenol, propionaldehyde), non-mercury (non-Hg) HAP metals, mercury (Hg), hydrogen chloride (HCl), polycyclic aromatic hydrocarbons (PAH), dioxin/furan (D/F), and methylene diphenyl diisocyanate (MDI). Sources affected by the amendments include PCWP process units and lumber kilns located at facilities that are major sources of HAP emissions. These final amendments address the 2007 partial remand and vacatur of the 2004 final rule that promulgated the PCWP NESHAP ("2004 rule"). The final amendments also respond to issues raised in a petition for reconsideration regarding the 2020 residual risk and technology review (RTR) and other amendments to the 2020 PCWP NESHAP.

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving identified portions of revisions to the Oklahoma State Implementation Plan (SIP) submitted by the State of Oklahoma designee between 2002 and 2025 to update the Oklahoma New Source Review (NSR) permit program and make general updates to the Oklahoma SIP.

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the State of Delaware through the Delaware Department of Natural Resources and Environmental Control (DNREC). The revision pertains to the second 10-year limited maintenance plan (LMP) for the 2006 24-hour fine particulate matter (PM2.5) national ambient air quality standard (NAAQS). The LMP addresses the New Castle County portion of the Philadelphia-Wilmington, PA-NJ-DE Area. The EPA is approving the LMP because it provides for the maintenance of the 2006 24-hour PM2.5 NAAQS through the end of the second 10-year maintenance period. In addition, the EPA is finalizing the process to find the LMP adequate for transportation conformity purposes. The EPA is approving this revision to the Delaware SIP in accordance with the requirements of the Clean Air Act (CAA).

This regulation establishes tolerances for residues of fluoxapiprolin in or on the food and feed commodities of brassica head and stem vegetables (group 5-16); bulb vegetables (subgroups 3-07A and 3-07B); cucurbit vegetables (group 9); fruiting vegetables (group 8- 10); leafy vegetables (group 4-16); leaf petiole vegetables (subgroup 22B); lettuce head; small fruit vine climbing, except fuzzy kiwifruit (subgroup 13-07F); and tuberous and corm vegetables (subgroup 1C). Under the Federal Food, Drug, and Cosmetic Act (FFDCA), Bayer CropScience submitted a petition to EPA requesting these tolerances.

This regulation establishes tolerances for residues of epyrifenacil (CASRN 353292-31-6) in or on corn, field (forage, grain, stover); rapeseed, seed; soybean (forage, hay, seed); wheat (forage, grain, hay, straw). Under the Federal Food, Drug, and Cosmetic Act (FFDCA), Valent submitted a petition to EPA requesting that EPA establish a maximum permissible level for residues of this pesticide in or on the identified commodities.

This regulation modifies existing tolerances for residues of chlormequat chloride in or on barley, oats, triticale, and wheat grains; and in or on multiple food and livestock commodities that are identified and will be discussed in detail later in this document. Taminco US LLC, a subsidiary of Eastman Chemical Company, requested these tolerances under the Federal Food, Drug, and Cosmetic Act (FFDCA).

This regulation establishes tolerances for residues of diflufenican (CASRN 83164-33-4) in or on multiple commodities which are identified and discussed later in this document. Under the Federal Food, Drug, and Cosmetic Act (FFDCA), Bayer CropScience submitted a petition to EPA requesting that EPA establish a maximum permissible level for residues of this pesticide in or on the identified commodities.

This regulation establishes tolerances for residues of bifenthrin in or on multiple commodities which are identified and discussed later in this document. Interregional Project Number 4 (IR-4) submitted a petition to EPA requesting that EPA establish a maximum permissible level for residues of this pesticide in or on the identified commodities.

The Environmental Protection Agency (EPA) is approving the request from the Ohio Environmental Protection Agency (Ohio EPA) to redesignate the Cleveland, Ohio area to attainment for the 2015 ozone National Ambient Air Quality Standards (NAAQS) because the request meets the statutory requirements for redesignation under the Clean Air Act (CAA). Ohio EPA submitted this request on December 8, 2025. The EPA is approving, as a revision to the Ohio State Implementation Plan (SIP), the State's plan for maintaining the 2015 ozone NAAQS through 2038 in the Cleveland area. The EPA is also finding adequate and approving Ohio's 2032 and 2038 volatile organic compound (VOC) and oxides of nitrogen (NO<INF>X</INF>) motor vehicle emissions budgets (budgets) for the Cleveland area. Additionally, the EPA is adjusting the deadline for Ohio to submit Serious SIP revisions for the Cleveland area. Finally, the EPA is approving the Enhanced motor vehicle inspection and maintenance (I/M) program certification and clean fuel vehicle program (CFVP) certification SIP revisions submitted by Ohio EPA on December 19, 2025, and January 12, 2026, pursuant to section 110 and part D of the CAA, because they satisfy Serious SIP requirements for the Cleveland area under the 2015 ozone NAAQS.

The Environmental Protection Agency (EPA) is granting, with conditions, U.S. Ecology Nevada Inc.'s (USE) petition for a site- specific treatability variance (SSTV) from the Resource Conservation and Recovery Act (RCRA) Land Disposal Restrictions (LDR) treatment standards. USE's petition is for a variance from the existing treatment and disposal standard for elemental mercury waste generated from retorting high mercury waste as prescribed by the LDR technology-based standard of RMERC. The petition demonstrated that the LDR standard for placing elemental mercury waste generated from RMERC back into commerce for reuse is inappropriate and the alternative treatment variance proposed by USE is sufficient to minimize threats to human health and the environment posed by land disposal of the waste. Under the approved SSTV, the existing LDR treatment standard of RMERC will continue to apply to high mercury hazardous wastes, but the elemental mercury generated from this process will be treated and land disposed subject to specified conditions at both Bethlehem Apparatus's facility in Bethlehem, Pennsylvania, and USE's Beatty, Nevada, subtitle C treatment, storage, and disposal (TSD) facility where the treated mercury wastes will be disposed in a designated RCRA subtitle C compliant monofill.

The Environmental Protection Agency (EPA) is approving source- specific State Implementation Plan (SIP) revisions submitted by Ohio. These revisions address major source volatile organic compound (VOC) and nitrogen oxide (NO<INF>X</INF>) reasonably available control technology (RACT) requirements for the Cleveland, OH Moderate nonattainment area for the 2015 ozone National Ambient Air Quality Standard (NAAQS or standard). The affected facilities include PPG Industries Ohio, Inc. (PPG), Owens Corning, Akron Paint and Varnish, Charter Steel, U. S. Steel Tubular Lorain, Carmeuse Lime, and Ross Incineration. The EPA is also approving source-specific SIP revisions for General Electric Aviation Evendale and Tyson Foods for the Cincinnati maintenance area for the 2015 ozone standard. Finally, the EPA is rescinding the source-specific VOC RACT rule for Formica Corporation since it is subject to an equivalent CTG-based rule in the Ohio Administrative Code (OAC). The EPA proposed to approve this action on February 27, 2026, and received five comments.

The Environmental Protection Agency (EPA) is approving source- specific State Implementation Plan (SIP) revisions submitted by Ohio. These revisions address major source volatile organic compound (VOC) and nitrogen oxide (NO<INF>X</INF>) reasonably available control technology (RACT) requirements for the Cleveland, OH Moderate nonattainment area (Cuyahoga, Geauga, Lake, Lorain, Medina, Portage, and Summit counties) for the 2015 ozone National Ambient Air Quality Standard (NAAQS or standard). The affected facilities include Lubrizol, Henkel, and Cleveland-Cliffs Cleveland Works. With this approval, Ohio has fully satisfied the Moderate area RACT requirements of the Clean Air Act (CAA) with respect to the 2015 ozone standard for the Cleveland area.

This regulation establishes an exemption from the requirement of a tolerance for residues of cinnamaldehyde (CAS Reg. No. 104-55-2) when used as an inert ingredient (preservative/stabilizer) on growing crops and raw agricultural commodities pre- and post-harvest, limited to no more than 100 parts per million (ppm) in the end-use pesticide formulation. Wagner Regulatory Associates, Inc., on behalf of Minagro, submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting establishment of an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of cinnamaldehyde, when used in accordance with the terms of this exemption.

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the Department of Energy and Environment (DOEE) on behalf of the District of Columbia (DC). The revision pertains to creating a synthetic minor permit program and resolving the regulatory differences between DC's current regulations and those regulations approved previously in Chapters 1 and 2 of the Air Quality Regulations codified in title 20 of the District of Columbia Municipal Regulations (DCMR). The intended effect of this action is to enable DC to create federally enforceable synthetic minor permit conditions for sources of criteria pollutants. The EPA is approving these revisions to the DC SIP in accordance with the requirements of the Clean Air Act (CAA).

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 accepting these negative declarations and amending agency regulations in accordance with the requirements of the CAA.

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 accepting the negative declaration and amending the agency regulations in accordance with the requirements of the CAA.

The Environmental Protection Agency (EPA) is approving with conditions, no-migration variances for four categories/groups of wastes, containing up to a combined 250 temporary disposal units ("put piles") at any one time, from the Resource Conservation and Recovery Act (RCRA) Land Disposal Restrictions (LDR) standards at Clean Harbors' Grassy Mountain (Clean Harbors) commercial treatment, storage and disposal facility (TSDF) in Tooele County, Utah. These variances will allow Clean Harbors to temporarily store treated hazardous wastes that are awaiting LDR compliance verification in put piles within its Subtitle C (hazardous waste) landfill. The petitioner demonstrated, to a reasonable degree of certainty, that there will be no migration of hazardous constituents from the put piles for as long as the wastes remain hazardous. Additionally, once LDR compliance is verified, the put piles will be disposed within the onsite RCRA hazardous waste landfill cell and will be subject to the conditions set out in the Compliance Monitoring Plan section of this document.

The Environmental Protection Agency is conforming the Emergency Planning and Community Right-to-Know Act hazardous chemical inventory reporting regulations to the Occupational Safety and Health Administration's Hazard Communication Standard amendments of 2012 and 2024. The Emergency Planning and Community Right-to-Know Act (EPCRA) and its regulations rely on the Occupational Safety and Health Administration's (OSHA's) Hazard Communication Standard for the definition of a hazardous chemical and for the categories of health and physical hazards that must be reported under the hazardous chemical inventory regulations. This action conforms the terminology used and information that must be reported on the hazardous chemical inventory forms to the Hazard Communication Standard amendments. As a result, this action improves first responder and community safety, reduces discrepancies and confusion, prevents interpretation burdens on facilities when using (Material) Safety Data Sheets to complete annual hazardous chemical inventory reports, and enhances clarity.

The U.S. Environmental Protection Agency (EPA) is amending the Code of Federal Regulations (CFR) to remove the provisions finalized by the EPA in a 2024 final rule titled "National Emission Standards for Hazardous Air Pollutants: Rubber Tire Manufacturing" ("2024 Rubber Tire Rule"). Under the Congressional Review Act (CRA), Congress passed, and the President signed, a joint resolution of disapproval of the 2024 Rubber Tire Rule. The 2024 Rubber Tire Rule promulgated first- time air emissions standards for the rubber processing subcategory of the rubber tire manufacturing source category. Under the joint resolution and by operation of the CRA, the 2024 Rubber Tire Rule has no legal force or effect, and the EPA thus is taking this final action to remove the provisions finalized in that rule.

The Environmental Protection Agency (EPA) is updating the materials that are incorporated by reference (IBR) into the Oregon State Implementation Plan (SIP). The regulations affected by this update have been previously submitted by Oregon and approved by the EPA. This update affects the materials that are available for public inspection at the EPA Regional Office and the National Archives and Records Administration (NARA). In this action, the EPA is also notifying the public that we are correcting two typographical errors.

This regulation establishes an exemption from the requirement of a tolerance for residues of resin acids, esters with glycerol (CAS Reg. No. 8050-31-5) when used as an inert ingredient (surfactant) on growing crops and raw agricultural commodities pre- and post-harvest. Croda Inc. submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting establishment of an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of resin acids, esters with glycerol when used in accordance with the terms of the exemption.

This regulation establishes an exemption from the requirement of a tolerance for residues of sodium nitrate (CAS Reg. No. 7631-99-4) when used as an inert ingredient (dilutant/oxidizer) in pesticide formulations applied to raw agricultural commodities post-harvest under 40 CFR 180.910, only when used in a fumigant canister that is remotely detonated and released inside a sealed warehouse. AgroFresh Inc. submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA) requesting establishment of an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of sodium nitrate, when used in accordance with the terms of this exemption. This action also corrects a typographical error to the CAS Reg. No. of d-Alpha tocopherol. A digit was inadvertently omitted from the previously listed CAS Reg. No., resulting in a number that is not valid and does not represent any chemical.

This regulation establishes tolerances for residues of pydiflumetofen (CASRN 1228284-64-7) in or on the food and feed commodities of sugarcane, cane. Under the Federal Food, Drug, and Cosmetic Act (FFDCA), Syngenta Crop Protection, LLC, submitted a petition to EPA requesting that EPA establish a maximum permissible level for residues of this pesticide in or on the identified commodities.

The U.S. Environmental Protection Agency (EPA) is partially withdrawing two final actions finding that 13 States and/or local air pollution control agencies failed to submit State Implementation Plan (SIP) revisions to address the Agency's 2015 findings of substantial inadequacy and "SIP call" for provisions applying to excess emissions during periods of startup, shutdown, and malfunction (SSM). The partial withdrawal affects six air pollution control agencies. Withdrawing relevant parts of the findings for failure to submit is consistent with the decision from the U.S. Court of Appeals for the District of Columbia Circuit Court (D.C. Circuit) partially vacating the findings of substantial inadequacy and SIP call. This final action renders no longer applicable certain CAA deadlines for the EPA to impose sanctions if a State does not submit a complete SIP revision addressing the outstanding requirements, and to promulgate a Federal Implementation Plan (FIP).

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) submitted by the State of New York for the purpose of fulfilling the requirement for a limited maintenance plan (LMP) for the 2006 fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standard (NAAQS) for ten counties which comprise the New York portion of the New York-Northern New Jersey-Long Island (NY-NJ-CT) 2006 PM<INF>2.5</INF> NAAQS maintenance area. This LMP was submitted on October 15, 2024 by the New York State Department of Environmental Conservation (NYSDEC). The plan addresses the second ten-year maintenance period for particulate matter with an aerodynamic diameter less than or equal to a nominal 2.5 micrometers, known as PM<INF>2.5</INF>. This action is being taken in accordance with the requirements of the Clean Air Act (CAA).

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.

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Connecticut. This revision revises the Connecticut ambient air quality standard (AAQS) for ozone to be consistent with EPA's national ambient air quality standard (NAAQS) for ozone and clarifies the volatile organic compound (VOC) calculation methods of adhesive and sealant products. The intended effect of this action is to approve these regulations into the Connecticut SIP. This action is being taken in accordance with the Clean Air Act.

The U.S. Environmental Protection Agency (EPA) is revising the Original 2013 Federal Implementation Plan (FIP) by finalizing nitrogen oxide (NO<INF>X</INF>) emission limits for the indurating furnace at United States Steel's (U.S. Steel) Keetac taconite facility (Keetac) in Keewatin, Minnesota to satisfy the requirement for best available retrofit technology (BART) at taconite facilities. The EPA is finalizing the following NO<INF>X</INF> BART emission limits for the Keetac Grate Kiln indurating furnace, with compliance to be determined on a rolling 720-hour average: 3.4 pounds (lbs) of NO<INF>X</INF> per million British Thermal Unit (MMBtu) when firing exclusively natural gas, which will become enforceable beginning three years after promulgation of a final rule; and 2.0 lbs NO<INF>X</INF>/MMBtu when firing any fuel or combination of fuels other than exclusively natural gas, which will become enforceable five years after promulgation of a final rule, unless before that date the EPA promulgates a modified limit. The final rule allows Keetac, within a period of 52 months from the effective date of the final rule, the option to seek a potential adjustment of the cofiring emission limit, not to exceed 2.5 lbs NO<INF>X</INF>/MMBtu as a 720-hour rolling average, based on collection of continuous emission monitoring system (CEMS) data after installation of the NO<INF>X</INF> reduction technology.

The Environmental Protection Agency (EPA) is correcting the preamble of a final rule published in the Federal Register on February 27, 2026. The final rule extended the reporting deadline under the Greenhouse Gas Reporting Rule, commonly referred to as the Greenhouse Gas Reporting Program (GHGRP), for reporting year 2025 from March 31, 2026, to October 30, 2026. This document corrects an inadvertent typographical error in the Federal Register. This correction does not result in any substantive changes to the final rule.

The Environmental Protection Agency (EPA) is approving a revision to the District of Columbia (DC, the District's) title V operating permits program, submitted on behalf of the District by the Department of Energy and Environment (DOEE). The revision will update the title V operating permit fees collected by DOEE in order to ensure that the title V operating program will continue to be adequately funded. The revision also reorganized some sections in Chapter 3 of 20 District of Columbia Municipal Regulations (20 DCMR) with no substantive change in content. The EPA is approving these revisions to the DC title V program in accordance with the requirements under section 502 of the Clean Air Act (CAA).

The Environmental Protection Agency (EPA) is approving two separate requests from Maryland and Delaware to revise the designation for the Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE nonattainment area for the 2008 primary and secondary ozone national ambient air quality standards (NAAQS) and the 2015 primary and secondary ozone NAAQS. Due to the concurrent requests from Maryland and Delaware, the EPA is revising the Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE nonattainment area boundary into three distinct nonattainment areas that together cover the identical geographic area of the existing area. The EPA is also issuing clean data determinations (CDDs) for the revised Maryland and Delaware nonattainment areas for both the 2008 and 2015 ozone NAAQS. The EPA is taking this action pursuant to Clean Air Act (CAA) sections 107, 110, 172, and 182.

The Environmental Protection Agency (EPA) is taking final action to conditionally approve a state implementation plan (SIP) submission under the Clean Air Act (CAA or "Act") that addresses the contingency measure requirements for the 2008 ozone national ambient air quality standards (NAAQS or "standards") for the San Joaquin Valley ozone nonattainment area. The SIP submission, titled the "Ozone Contingency Measure State Implementation Plan Revision for the 2008 and 2015 8-hour Ozone Standards" ("2024 SJV Ozone Contingency Measure Plan," "Contingency Measure Plan," or "Plan") relies on two ozone contingency measures that the EPA has already approved in separate rulemakings. The approval is conditional because it relies on commitments by the State air agency and regional air district to supplement the 2024 SJV Ozone Contingency Measure Plan with submission of specific additional contingency measures within one year of the EPA's final conditional approval. The EPA is taking final conditional approval action of the SIP submission because the Agency has determined that the existing approved contingency measures, the commitments to submit additional contingency measures, and the justification for not adopting contingency measures that would achieve the recommended amount for such measures, meet the applicable requirements for such SIP submissions for the San Joaquin Valley for the 2008 ozone NAAQS. This conditional approval adds the 2024 SJV Ozone Contingency Measure Plan to the federally enforceable California SIP.

The U.S. Environmental Protection Agency (EPA) is finalizing the residual risk and technology review (RTR) conducted for the National Emission Standards for Hazardous Air Pollutants (NESHAP) from Hazardous Waste Combustors (HWC). Specifically, the EPA is finalizing that risks due to emissions of hazardous air pollutants (HAP) from this source category are adequately addressed by the existing standards; that the NESHAP provides an ample margin of safety to protect public health; and that no developments in practices, processes, or control technologies necessitate revision of the standards. In addition, the EPA is promulgating emission standards for hydrogen fluoride (HF) and hydrogen cyanide (HCN) emissions from major source HWC incinerators, cement kilns, solid fuel boilers, and liquid fuel boilers under Clean Air Act (CAA) sections 112(d)(2) and (3) and 112(h). These final amendments also include work practice standards under CAA section 112(h) for periods of startup, shutdown, and malfunction (SSM); new electronic reporting provisions and requirements; provisions allowing States to choose to exempt area source HWCs from certain permitting requirements; and certain typographical and technical corrections and clarifications.

The U.S. Environmental Protection Agency (EPA) is rescinding a 2023 final rule titled "Removal of Title V Emergency Affirmative Defense Provisions From State Operating Permit Programs and Federal Operating Permit Program" ("2023 Affirmative Defense Rule"). The 2023 Affirmative Defense Rule removed emergency-related affirmative defense provisions from Federal regulations governing title V operating permit programs. The EPA is taking this final action in response to a September 5, 2025, decision of the U.S. Court of Appeals for the District of Columbia (DC) Circuit which reversed the EPA's 2023 Affirmative Defense Rule. This rescission is necessary to carry out the court's mandate and reinstates the emergency-related affirmative defense provisions as they existed in the Code of Federal Regulations (CFR) before promulgation of the 2023 Affirmative Defense Rule.

The Environmental Protection Agency (EPA) is proposing to partially approve and partially disapprove a revision to the Arizona State implementation plan (SIP) as meeting the requirements of the Clean Air Act (CAA) for the implementation, maintenance, and enforcement of the 2012 fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standard (NAAQS or "standards"). The EPA is proposing to approve the portions of Arizona's submission addressing prevention of significant deterioration (PSD) requirements in the permitting jurisdictions of the Arizona Department of Environmental Quality (ADEQ), Maricopa County Air Quality Department (MCAQD), and Pinal County Air Quality Control District (PCAQCD). The EPA is proposing to disapprove the portions of the Arizona submission addressing PSD requirements in the Pima County Department of Environmental Quality (PDEQ) permitting jurisdiction.

The U.S. Environmental Protection Agency (EPA) is proposing to approve revisions to 35 Illinois Administrative Code (IAC) parts 217, 218, and 219 into the Illinois State Implementation Plan (SIP). The Illinois Environmental Protection Agency (Illinois or Illinois EPA) submitted these revisions on December 18, 2024, and May 12, 2025, supplemented their submittal on August 13, 2025, for Moderate Reasonably Available Control Technology (RACT). The EPA is proposing to approve 35 IAC parts 217, 218, and 219 as satisfying the Moderate Volatile Organic Compound (VOC) RACT and NO<INF>X</INF> RACT requirements as well as Serious NO<INF>X</INF> RACT requirements for the Chicago, IL (Cook County, DuPage County, Grundy County, Kane County, Kendall County, Lake County, McHenry County, and Will County) and Metro-East St. Louis (Madison County, Monroe County, and St. Clair County) nonattainment areas under the 2015 ozone National Ambient Air Quality Standard (NAAQS or standard).

The Environmental Protection Agency (EPA) is proposing to approve a state implementation plan (SIP) revision and redesignation request submitted on September 19, 2025 by the Pennsylvania Department of Environmental Protection (PADEP). The SIP revision asks the EPA to redesignate the Warren County, Pennsylvania area from nonattainment to attainment for the 2010 1-hour primary sulfur dioxide (SO<INF>2</INF>) national ambient air quality standard (NAAQS). The revision also asks the EPA to approve into the SIP the Commonwealth's maintenance plan for the 2010 1-hour primary SO<INF>2</INF> NAAQS for the Warren County area. Furthermore, Pennsylvania requests that the EPA correct source- specific requirements for United Refining Company within the Pennsylvania SIP that were previously included in error. This proposed action is being taken under the Clean Air Act (CAA).

The Environmental Protection Agency (EPA) is proposing to approve revisions to the Missouri State Implementation Plan (SIP) received on February 10, 2026. The submission revises Missouri's regulation on construction permit exemptions in their Minor New Source Review (NSR) program. These revisions refine exemptions for emergency generators, update references to other rules, and update recordkeeping requirements. The EPA is proposing to approve this rule revision pursuant to the Clean Air Act (CAA).

The Environmental Protection Agency (EPA) is proposing to approve revisions to four State of California air districts' Clean Air Act title V program rules to remove emergency affirmative defense provisions. The four districts are the Amador County Air Pollution Control District (ACAPCD), the Calaveras County Air Pollution Control District (CCAPCD), the Great Basin Unified Air Pollution Control District (GBUAPCD), and the Northern Sierra Air Quality Management District (NSAQMD) ("Districts"). This proposed action is being taken in accordance with Federal regulations and the Clean Air Act (CAA or "Act"). We are taking comments on these proposed revisions and plan to follow with a final action.

EPA is proposing 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. Once finalized, the SNURs would require persons who intend to manufacture (defined by statute to include import) or process any of these chemical substances for an activity that is proposed as a significant new use by this rulemaking to notify EPA at least 90 days before commencing that activity. 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.

The Environmental Protection Agency (EPA) is proposing to approve a request from the Michigan Department of Environment, Great Lakes, and Energy (EGLE) to redesignate the Detroit, Michigan area to attainment for the 2015 ozone National Ambient Air Quality Standards (NAAQS) because the request meets the statutory requirements for redesignation under the Clean Air Act (CAA). EGLE submitted this request on January 3, 2022, and submitted a supplement to this request on May 18, 2026. The EPA is also proposing to approve, as a revision to the Michigan State Implementation Plan (SIP), the State's updated maintenance plan for the 2015 ozone NAAQS through 2040 in the Detroit area, including motor vehicle emissions budgets for 2035 and 2040, for both volatile organic compound (VOC) and oxides of nitrogen (NO<INF>X</INF>). The EPA is also initiating the adequacy process for these maintenance plan budgets. Additionally, the EPA is proposing to adjust the SIP submission and control measure implementation deadlines for certain Moderate requirements. Finally, the EPA is proposing to take final agency action on an exceptional events request submitted by EGLE on April 15, 2026, and concurred on by the EPA on June 4, 2026.

The Environmental Protection Agency (EPA) is proposing to approve the Michigan Department of Environment, Great Lakes, and Energy's (EGLE's) December 26, 2025, requests to redesignate the Berrien and Muskegon areas to attainment for the 2015 ozone NAAQS because the requests meet the statutory requirements for redesignation under the Clean Air Act (CAA). The Berrien area includes Berrien County, and the Muskegon area includes the western portion of Muskegon County. The EPA is proposing to approve, as revisions to the Michigan State Implementation Plan (SIP), the State's plans for maintaining the 2015 ozone NAAQS through 2036 in the Berrien and Muskegon areas. The EPA is initiating the adequacy process and proposing to approve Michigan's 2032 and 2036 volatile organic compound (VOC) and oxides of nitrogen (NO<INF>X</INF>) motor vehicle emissions budgets (budgets) for the Berrien and Muskegon areas. Pursuant to section 110 and part D of the CAA, the EPA is proposing to approve the enhanced monitoring plan (EMP) of ozone and ozone precursors SIP revision submitted by Michigan on January 12, 2026, because it satisfies Serious SIP requirements of the CAA for the Berrien and Muskegon areas. The EPA is also proposing to approve the Serious VOC reasonably available control technology (RACT) SIP revision and CAA section 182(f) waiver from Serious NO<INF>X</INF> RACT requirements for the Berrien and Muskegon areas under the 2015 ozone NAAQS submitted by EGLE to the EPA on May 5, 2026.

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of New Jersey for purposes of certifying and meeting the requirements for Reasonably Available Control Technology (RACT) for the Serious classification of the 2008 and the Moderate classification of the 2015 8-hour ozone National Ambient Air Quality Standards (NAAQS). EPA is also proposing to approve that the SIP revisions fulfill SIP requirements pertaining to the Ozone Transport Region (OTR) for the 2015 Ozone NAAQS. These actions are being taken in accordance with the requirements of the Clean Air Act (CAA).

The Environmental Protection Agency (EPA) is proposing to approve under the Clean Air Act (CAA), the Second Maintenance Plan for the Harrisburg-Lebanon-Carlisle and York Maintenance Area (Harrisburg- York Area) for the 2006 Fine Particulate Matter national ambient air quality standard (NAAQS) (Second 10-Year Maintenance Plan) as a revision to the state implementation plan (SIP). The SIP revision, submitted on February 7, 2025 by the Pennsylvania Department of Environmental Protection (PADEP), addresses the second 10-year maintenance period for particulate matter with an aerodynamic diameter less than or equal to a nominal 2.5 micrometers ([micro]m), commonly known as fine particulate matter or PM<INF>2.5</INF>. The Plan includes, among other elements, a base year emissions inventory, a maintenance demonstration, contingency provisions, and motor vehicle emissions budgets for use in transportation conformity determinations, to ensure the continued maintenance of the 2006 PM<INF>2.5</INF> NAAQS. The EPA is also proposing to find adequate and approve the motor vehicle emission budgets for the Harrisburg-York Area.

The Environmental Protection Agency (EPA) is proposing to approve a state implementation plan (SIP) revision submitted by the Pennsylvania Department of Environmental Protection on behalf of the Commonwealth of Pennsylvania. This revision pertains to previously approved, source-specific reasonably available control technology (RACT) requirements for the Equitrans, Inc. Hartson Compressor Station in Washington County, Pennsylvania. This proposed action is being taken under the Clean Air Act (CAA).

EPA is proposing 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. Once finalized, the SNURs would require persons who intend to manufacture (defined by statute to include import) or process any of these chemical substances for an activity that is proposed as a significant new use by this rulemaking to notify EPA at least 90 days before commencing that activity. 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.

The Environmental Protection Agency (EPA) is proposing to accept a negative declaration submitted by the Nebraska Department of Water, Energy, and Environment (NDWEE) to satisfy the emission guidelines and associated compliance times requirements for Commercial and Industrial Solid Waste Incineration (CISWI) units for the State of Nebraska. The negative declaration certifies that there are no existing sources within the jurisdiction of Nebraska that must comply with the rule. This action is being taken in accordance with the Clean Air Act (CAA) requirements for emission guidelines and state plans for existing sources. In the "Rules and Regulations" section of this Federal Register, we are approving the State's negative declaration submission as a direct final rule without a prior proposed rule. If we receive no adverse comment, we will not take further action on this proposed rule.

The Environmental Protection Agency (EPA) is proposing to approve four state implementation plan (SIP) revisions submitted by the Commonwealth of Pennsylvania received on May 10, 2023, January 20, 2026, February 17, 2026, and April 10, 2026, through the Pennsylvania Department of Environmental Protection (PADEP). The SIP revisions address reasonably available control technology (RACT) requirements for the 2008 and 2015 ozone national ambient air quality standards (NAAQS) relating to control technique guidelines (CTGs) for volatile organic compounds (VOC) via previously adopted CTG regulations, three new CTG regulations and four facilities covered by the CTG for the Manufacture of High-Density Polyethylene, Polypropylene, and Polystyrene Resins respectively. This action is being taken under the Clean Air Act (CAA).

The Environmental Protection Agency (EPA) is proposing to approve a revision to the State of Wisconsin's State Implementation Plan (SIP) for the Oak Creek Power Plant located in Oak Creek, Wisconsin. The EPA is proposing to approve alternative nitrogen oxides (NO<INF>X</INF>) emissions limits for the Oak Creek facility. The alternative limits will allow the facility to operate in compliance with State and Federal regulations, and emit less NO<INF>X</INF> over time as compared to current limits. 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).

Pursuant to applicable requirements under the Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is proposing to approve a revision to the State of New York's State Implementation Plan (SIP) for the ozone National Ambient Air Quality Standard (NAAQS) related to a source-specific SIP (SSSIP) revision for Castleton Energy Center, located at 1902 River Road, Castle-on-Hudson, New York 12033 (herein referred to CEC, or the Facility). The EPA is proposing to find that the control option in this SSSIP revision is Reasonably Available Control Technology (RACT) with respect to oxides of nitrogen (NO<INF>X</INF>) emissions from the relevant Facility emission source, i.e., a combined-cycle combustion turbine generator with an associated heat recovery steam generator equipped with a duct burner, and a steam generator, identified as emission unit 1-0GTDB in the Facility's CAA Title V operating permit. This SSSIP revision is intended to implement NO<INF>X</INF> RACT for the relevant Facility source in accordance with the requirements for implementation of the 2008 and 2015 ozone NAAQS. The EPA proposes to determine that this action will not interfere with ozone NAAQS requirements and meets all applicable requirements of the Act.

The Environmental Protection Agency (EPA) is proposing to approve revisions to the Missouri State Implementation Plan (SIP) related to Control of Nitrogen Oxide (NO<INF>X</INF>) Emissions From Large Stationary Internal Combustion Engines. The revisions reformat and revise reporting, recordkeeping, and compliance requirements; incorporate other state rules by reference; add definitions specific to the rule; revise unnecessarily restrictive or duplicative language; and make administrative wording changes. The revisions also add an exemption for certain spark-ignited internal combustion engines. The EPA's proposed approval is pursuant to, and consistent with, the requirements of the Clean Air Act (CAA).

The Environmental Protection Agency (EPA or the Agency) is proposing to approve the Alabama partial Coal Combustion Residuals (CCR) permit program under the Resource Conservation and Recovery Act (RCRA). After reviewing the CCR permit program application submitted by the Alabama Department of Environmental Management (ADEM) on May 18, 2026, EPA has preliminarily determined that Alabama's partial CCR permit program meets the standard for approval under RCRA. If approved, Alabama's CCR permit program will operate in lieu of the Federal CCR program, with the exception of the specific provisions noted below. EPA is seeking comment on this proposal during a 60-day public comment period and will be holding a virtual public hearing on EPA's preliminary approval of Alabama's partial CCR permit program.

The Environmental Protection Agency (EPA) issued a proposed rule on February 20, 2020, to establish a Federal permit program for disposal of coal combustion residuals (CCR). On April 13, 2026, the EPA proposed to establish new compliance pathways that would allow site- specific considerations to be taken into account during permitting for owners or operators of CCR units complying with groundwater monitoring, corrective action, and closure requirements under a federal or participating-State CCR permit. The EPA is considering whether a general permit could be developed to allow such facilities to temporarily obtain permit coverage until an individual permit issued by EPA or an approved state CCR permit program is in effect. This advance notice of proposed rulemaking (ANPRM) does not propose any regulatory requirements or change any existing regulatory requirements.

The U.S. Environmental Protection Agency (EPA) is proposing regulatory amendments to certain compliance provisions and test procedures related to model year (MY) 2027 and later heavy-duty highway engines. These amendments would include changes to the regulatory useful life periods and the emission-related warranty periods. The EPA also proposes to add clarity to certain regulatory compliance provisions and correct errors in the regulations to support the MYs 2027 and later program for heavy-duty highway engines and vehicles. This includes certain amendments related to provisions adopted in January 2023 as well as other provisions adopted in earlier rules. The EPA also proposes to make nonconformance penalties (NCPs) available to manufacturers of medium heavy-duty engines (Medium HDE) and heavy heavy-duty engines (Heavy HDE) beginning in MY 2027. In addition, the EPA proposes to amend the requirements for selective catalytic reduction (SCR) system inducement provisions for newly manufactured diesel-fueled highway engines and vehicles (i.e., light- and medium- duty vehicles and heavy-duty engines) and nonroad engines and equipment. The EPA is also considering new inducement guidance for in- use highway and nonroad diesel engines, vehicles, and equipment.

The Environmental Protection Agency (EPA) is proposing to approve revisions to the State of California's State Implementation Plan (SIP) for the San Joaquin Valley (SJV) area. The revisions consist of 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 standard (NAAQS or "standard"). 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 SJV. If the EPA approves these budgets, they would supersede the existing approved SJV subarea budgets for the 2008 ozone NAAQS that were based on an earlier emissions model. The EPA is proposing to approve the updated SJV ozone budgets in accordance with the requirements of the Clean Air Act (CAA or "Act") and the EPA's regulations.

The U.S. Environmental Protection Agency (EPA) is proposing to revise the public participation regulatory requirements for sources subject to Clean Air Act (CAA) New Source Review (NSR) programs approved into State Implementation Plans (SIPs). Specifically, the EPA is proposing to recognize in regulation that State and local air quality regulatory authorities ("air agencies") determine, pursuant to the CAA, whether, when, and to what extent public participation in minor NSR programs is necessary to assure the National Ambient Air Quality Standards (NAAQS) are achieved. If finalized, the changes effected by this rulemaking would provide State and local air agencies with greater discretion to identify the requisite level of public participation that is appropriate in their minor NSR programs, which regulate individual authorizations to construct minor stationary sources and minor modifications to existing stationary sources.

This document announces the Agency's receipt of and solicits public comment on initial filings of pesticide petitions requesting the establishment or modification of regulations for residues of pesticide chemicals in or on various commodities. The Agency is providing this notice in accordance with the Federal Food, Drug, and Cosmetic Act (FFDCA). EPA uses the month and year in the title to identify when the Agency compiled the petitions identified in this notice of filing. Unit II. of this document identifies certain petitions received in 2025 and 2026 that are currently being evaluated by EPA, along with information about each petition, including who submitted the petition and the requested action.

The U.S. Environmental Protection Agency (EPA) is proposing a Federal plan to implement the revised emission guidelines for existing other solid waste incineration (OSWI) units. The EPA promulgated emission guidelines for existing OSWI units in 2005 and revised the emission guidelines on June 30, 2025. If a State or Tribe with existing OSWI units subject to the 2025 revised OSWI emission guidelines does not submit an approvable plan by June 30, 2027, the EPA will develop, implement, and enforce a Federal plan for existing OSWI units located in that State or area of Indian Country. This action proposes a Federal plan to implement the 2025 revised OSWI units emission guidelines for existing OSWI units located in States and on Tribal lands without effective State or Tribal plans by the effective date of this Federal plan.

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of Alabama, through the Alabama Department of Environmental Management (ADEM) on April 7, 2026. The SIP revision replaces the previously approved transportation conformity memorandum of agreement (MOA) with an updated MOA concerning transportation conformity criteria and procedures related to interagency consultation, conflict resolution, public participation, and enforceability of certain transportation-related control and mitigation measures. The SIP revision also makes a minor stylistic change to the Transportation Conformity and General Conformity rules in the Alabama SIP. EPA is proposing to determine that Alabama's April 7, 2026, SIP revision is consistent with the applicable provisions of the Clean Air Act (CAA or Act).

The U.S. Environmental Protection Agency (EPA or agency) is proposing the sixth Unregulated Contaminant Monitoring Rule (UCMR 6). Under the Safe Drinking Water Act (SDWA), the UCMR program gathers data about unregulated contaminant occurrence in drinking water. The proposed UCMR 6 would require public water systems (PWSs) to collect national occurrence data for seven ultrashort organofluorine compounds (including certain PFAS), three pesticide metabolites, 13 semivolatile organic compounds, and seven purgeable organic compounds. Subject to the availability of appropriations, the EPA will require all community and non-transient non-community water systems (CWSs and NTNCWSs) serving 3,300 or more people, and a representative sample of PWSs serving fewer than 3,300 people, to conduct monitoring. These contaminants are not currently subject to national primary drinking water regulations (NPDWRs), and the EPA is proposing to require the collection of drinking water occurrence data to inform agency decisions. The data collected will be publicly available. The EPA is also announcing two public meetings (via webinar) to discuss this proposal of the sixth Unregulated Contaminant Monitoring Rule (UCMR 6).

The Environmental Protection Agency (EPA) is proposing to approve revisions to the Mojave Desert Air Quality Management District (MDAQMD or "District") portion of the California State Implementation Plan (SIP). These revisions concern prohibitory rules that regulate emissions of volatile organic compounds (VOCs) and oxides of nitrogen (NO<INF>X</INF>) under the Clean Air Act (CAA or "Act") within the Riverside County portion of the MDAQMD portion of the California SIP. We are proposing to approve the rescissions of the rules because the requirements in the rules are no longer necessary to retain in the SIP to meet CAA requirements.

The United States Environmental Protection Agency (EPA or Agency) is proposing amendments to its procedures for implementing the requirements of the National Environmental Policy Act of 1969 (NEPA). This proposed rule would also include technical amendments to the Agency's procedures to improve clarity, correct errors, and update office names and titles. This proposed rule would amend EPA's NEPA implementing procedures by incorporating proposed revisions to create efficiencies in the implementation of NEPA and to harmonize EPA's NEPA Implementing Procedures with other federal agencies' procedures, where possible. The proposed rule also incorporates the amendments to NEPA enacted through the Fiscal Responsibility Act of 2023 (FRA) and the One Big Beautiful Bill Act of 2025 (OBBBA); makes changes consistent with Executive Order (E.O.) 14154, Unleashing American Energy; makes changes based on the Council on Environmental Quality's (CEQ) subsequent rescission of its NEPA regulations; and to reflect the Supreme Court's May 29, 2025 decision in Seven County Infrastructure Coalition v. Eagle County, Colorado, 605 U.S. 168(2025) (hereinafter Seven County).

The Environmental Protection Agency (EPA) is proposing to approve a revision to the Arizona State Implementation Plan (SIP) submitted by the Arizona Department of Environmental Quality (ADEQ). This revision includes statutes and regulations amending the Cleaner Burning Gasoline (CBG) program, which is a control measure in the greater Phoenix metropolitan area to reduce emissions of ozone-forming pollutants, carbon monoxide (CO), and particulate matter. Additionally, this revision addresses the Winter Oxygenated Fuel program to control CO emissions in the Tucson area. Finally, this revision repeals the Arizona Gasoline Set[hyphen]aside (GSA) Program, applicable to the 1971 carbon monoxide nonattainment area covering Maricopa County and a portion of Pima County. The EPA is proposing to approve this SIP revision under the Clean Air Act (CAA or "Act"). This SIP revision is administrative in nature. This action proposes to update the existing SIP-approved CBG program with revisions that have been adopted and implemented by the State to clarify requirements, update references, and enhance flexibility of the program, and it will not impose any additional costs or regulatory burdens. We are taking comments on this proposal and plan to follow with a final action.

The U.S. Environmental Protection Agency (EPA) is proposing to approve portions of Colorado State Implementation Plan (SIP) submittals under the Clean Air Act (CAA) that address SIP obligations related to Reasonably Available Control Technology (RACT) requirements for the 2008 ozone National Ambient Air Quality Standards (NAAQS) for the Denver-Boulder-Greeley-Ft. Collins-Loveland, Colorado ozone nonattainment area. The EPA is proposing approval of portions of the RACT SIP submittals that address reporting requirements for certain source categories and reorganize certain state air pollution regulations. The EPA is also proposing to find that the State has addressed the EPA's prior limited disapproval.

On April 22, 2026, the U.S. Environmental Protection Agency (EPA) proposed a rule titled "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." The EPA is extending the comment period on this proposed rule, which is scheduled to close on June 22, 2026. The comment period will now end on August 6, 2026, to allow additional time for stakeholders to review and comment on the proposal.

This document announces the Agency's receipt of and solicits public comment on initial filings of pesticide petitions requesting the establishment or modification of regulations for residues of pesticide chemicals in or on various commodities. The Agency is providing this notice in accordance with the Federal Food, Drug, and Cosmetic Act (FFDCA). EPA uses the month and year in the title to identify when the Agency compiled the petitions identified in this notice of filing. Unit II. of this document identifies certain petitions received in 2024 and 2025 that are currently being evaluated by EPA, along with information about each petition, including who submitted the petition and the requested action.

This document announces the Agency's receipt of and solicits public comment on initial filings of pesticide petitions requesting the establishment or modification of regulations for residues of pesticide chemicals in or on various commodities. The Agency is providing this notice in accordance with the Federal Food, Drug, and Cosmetic Act (FFDCA). EPA uses the month and year in the title to identify when the Agency compiled the petitions identified in this notice of filing. Unit II. of this document identifies certain petitions received in 2023, 2024, 2025 and 2026 that are currently being evaluated by EPA, along with information about each petition, including who submitted the petition and the requested action.

The Environmental Protection Agency (EPA or the Agency) is extending the comment period for the proposed rule entitled "Hazardous and Solid Waste Management System: Disposal of Coal Combustion Residuals From Electric Utilities; Legacy/CCRMU Amendments." EPA is extending the comment period until June 29, 2026, in response to stakeholders' requests for a comment period extension.

This document announces the Agency's receipt of and solicits public comment on initial filings of pesticide petitions requesting the establishment or modification of regulations for residues of pesticide chemicals in or on various commodities. The Agency is providing this notice in accordance with the Federal Food, Drug, and Cosmetic Act (FFDCA). EPA uses the month and year in the title to identify when the Agency compiled the petitions identified in this notice of filing. Unit II. of this document identifies certain petitions received in 2023, 2024 and 2025 that are currently being evaluated by EPA, along with information about each petition, including who submitted the petition and the requested action.

The U.S. Environmental Protection Agency (EPA) is reconsidering certain aspects of the January 2025 final rule entitled State Implementation Plan Submittal Deadlines and Implementation Requirements for Reclassified Nonattainment Areas Under the Ozone National Ambient Air Quality Standards ("January 2025 final rule"). Among other things, the January 2025 final rule codified a policy that certain State Implementation Plan (SIP) requirements for a prior classification remain due upon an area's reclassification to a higher classification. In this proposed action, the EPA is proposing a new interpretation that, upon reclassification, an area is subject only to those requirements in Clean Air Act (CAA) section 182 that are specific to that area's current classification. If finalized, this proposed rule would apply nationwide to all past and future reclassifications associated with the 2008, 2015, and any future ozone National Ambient Air Quality Standards (NAAQS). The EPA is not reconsidering or reopening any other aspect of the January 2025 final rule in this rulemaking and is not addressing the scope of applicable requirements for NAAQS other than the ozone NAAQS.

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.

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.

EPA is proposing 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 who intend to manufacture (defined by statute to include import) or process any of these chemical substances for an activity that is proposed as a significant new use by this rulemaking to notify EPA at least 90 days before commencing that activity. 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.

The U.S. Environmental Protection Agency (EPA) is proposing revisions to the Federal Implementation Plan (FIP) addressing regional haze in the State of Wyoming. The EPA is proposing revisions to the FIP's nitrogen oxides (NO<INF>X</INF>) best available retrofit technology (BART) requirements for the PacifiCorp Dave Johnston Power Plant Unit 3. In response to PacifiCorp's letter no longer consenting to closure of Dave Johnston Unit 3, the EPA is proposing to withdraw the NO<INF>X</INF> BART determination containing the closure requirement. Additionally, in response to a request from PacifiCorp, and in light of new information that was not available at the time the EPA originally promulgated the FIP in 2014, the Agency is also proposing to revise the other NO<INF>X</INF> BART determination for Dave Johnston Unit 3.

EPA is proposing 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 who intend to manufacture (defined by statute to include import) or process any of these chemical substances for an activity that is proposed as a significant new use by this rulemaking to notify EPA at least 90 days before commencing that activity. 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.

The Environmental Protection Agency (EPA or the Agency) is proposing to approve the Louisiana Coal Combustion Residuals (CCR) partial permit program under the Resource Conservation and Recovery Act (RCRA). After reviewing the CCR permit program application submitted by the Louisiana Department of Environmental Quality (LDEQ), EPA has preliminarily determined that Louisiana's CCR permit program meets the standard for partial approval under RCRA. If approved, Louisiana's CCR permit program will operate in lieu of the Federal CCR program, with the exception of the specific provisions noted below. EPA is seeking comment on this proposal during a 60-day public comment period and will hold a hybrid in-person and virtual public hearing on EPA's preliminary approval of Louisiana's partial CCR permit program.

Environmental Protection Agency (EPA) is proposing to amend the administrative hearing procedures for claims brought against the Hazardous Substance Superfund pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).

Environmental Protection Agency (EPA) is proposing to rescind regulations establishing arbitration procedures for small cost recovery claims arising under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). EPA is proposing this rescission to simplify the body of Federal regulations.