Environmental Protection Agency

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 approving revisions to the volatile organic compound (VOC) requirements for Keystone Automotives Industries dba Saturn Wheel (Keystone) of Huntington County, Indiana. Keystone owns and operates an aluminum alloy wheel refurbishing and distribution facility at which it performs cold cleaner degreasing operations and is subject to the VOC rules under article 8 of the Indiana Administrative Code (IAC). On February 26, 2025, the Indiana Department of Environmental Management (IDEM) submitted a Commissioner's Order containing the revised requirements and requested that the EPA approved it as an amendment to the Indiana State Implementation Plan (SIP). IDEM is seeking the EPA approval of an equivalent control device and site specific Reasonably Available Control Technology (RACT) for Keystone's degreasing operations, as provided in IAC article 8. The EPA proposed to approve this action on February 27, 2026, and received no adverse comments.

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the Commonwealth of Pennsylvania. The revision updates the reasonably available control technology (RACT) Plan for the Philadelphia Gas Works, Richmond Plant (PGW Richmond) by removing a condition from the RACT Plan Approval that was incorporated into Pennsylvania's SIP on October 7, 2016. The proposed revision results in no change of emission allowances under RACT. The EPA is approving this revision to the Pennsylvania SIP in accordance with the requirements of the Clean Air Act (CAA).

The Environmental Protection Agency (EPA or the Agency) is approving 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 Calpine JFK Energy Center, located at Kennedy International Airport (JFK), Building 49, Jamaica, NY 11430 (the Facility). The EPA found that the control options in this SSSIP revision implement Reasonably Available Control Technology (RACT) with respect to Oxides of Nitrogen (NO<INF>X</INF>) emissions from the relevant Facility sources, which are identified as six mid-size emergency hot water boilers (the Boilers). This SSSIP revision implements NO<INF>X</INF> RACT for the relevant Facility sources in accordance with the requirements for implementation of the 2008 and 2015 ozone NAAQS. The EPA determined that this action will not interfere with ozone NAAQS requirements and meets all applicable requirements of the Clean Air Act (CAA).

The Environmental Protection Agency (EPA) is approving 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 the Athens Generating Plant, located at 9300 US Route 9 West, Athens, NY 12015 (Athens or the Facility). In accordance with the requirements for implementation of the 2008 and 2015 ozone NAAQS, the EPA finds that the control options in New York's SSSIP revision implement Reasonably Available Control Technology (RACT) with respect to Oxides of Nitrogen (NO<INF>X</INF>) emissions from the relevant Facility sources, which are identified as three combined-cycle Westinghouse model 501G combustion turbines with associated heat recovery steam generators and steam turbines (identified as Emission Units U-00001, U-00002, and U-00003 in the Facility's Title V permit and New York's submission). This action is being taken in accordance with the requirements of the Clean Air Act (CAA).

The Detroit, Michigan area was redesignated to attainment of the 2015 ozone National Ambient Air Quality Standards (NAAQS) on May 19, 2023. On December 5, 2025, the United States Court of Appeals for the Sixth Circuit vacated the Environmental Protection Agency's (EPA's) redesignation of the Detroit area. Therefore, pursuant to the Court's decision, the EPA is making a technical amendment to the part 81 listing for the Detroit area to reflect the area's designation as nonattainment for the 2015 ozone NAAQS, with a classification of Moderate.

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD), Ventura County Air Pollution Control District (VCAPCD), and South Coast Air Quality Management District (SCAQMD) portions of the California State Implementation Plan (SIP). These revisions concern emissions of volatile organic compounds (VOCs) from crude oil and natural gas production facilities. We are approving local rules that regulate these emission sources under the Clean Air Act (CAA or "Act").

The Environmental Protection Agency (EPA) is determining that the Baltimore, Maryland (MD) nonattainment area (the Baltimore Area or the Area) has clean data for the 2015 8-hour ozone national ambient air quality standard (NAAQS or standard). This determination is based upon quality-assured, quality-controlled, and certified ambient air monitoring data for the 2022-2024 design value (DV) period showing that the Baltimore Area attained the 2015 ozone NAAQS, with the exclusion of certain monitoring data impacted by exceptional events. The EPA is taking final agency action on portions of three exceptional event (EE) requests submitted by the Maryland Department of the Environment (MDE) on February 2, 2024, on behalf of MD, and concurred on by the EPA on November 12, 2025. As a result of the clean data determination (CDD), under the EPA's Clean Data Policy, the EPA is suspending the requirements for the Baltimore Area to submit attainment demonstrations and associated Reasonably Available Control Measures (RACM), Reasonable Further Progress (RFP) plans, contingency measures, and other planning SIPs related to attainment of the 2015 ozone NAAQS, for as long as the Baltimore Area continues to attain the standard.

The Environmental Protection Agency (EPA) is partially approving and partially disapproving the regional haze state implementation plan (SIP) revision submitted by Hawaii on August 2, 2024, under the Clean Air Act (CAA) and the EPA's Regional Haze Rule (RHR) for the program's second implementation period. Hawaii's SIP submission is intended to address the requirement that states must periodically revise their long-term strategies for making reasonable progress towards the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility, including regional haze, in mandatory Class I Federal areas. The SIP submission also addresses other applicable requirements for the second implementation period of the regional haze program. The EPA is approving the portions of Hawaii's submission relating to calculations of baseline, current, and natural visibility conditions, progress to date, the uniform rate of progress, reasonably attributable visibility impairment, progress report requirements, and monitoring strategy and other implementation plan requirements. The EPA is disapproving the long-term strategy, including the enforceable shutdown of several electric generating units at facilities on the islands of Hawaii and Maui. Additionally, we are disapproving the portions of the submission relating to reasonable progress goals and Federal land manager (FLM) consultation requirements.

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision (Revision B23) submitted by the Commonwealth of Virginia. The revision removes two existing stationary sources regulations, emission standards for petroleum refinery operations and emissions standards for large appliance coating application systems, from Virginia's SIP as there are no longer any applicable sources in Virginia. The EPA is approving these revisions to the Virginia SIP in accordance with the requirements of the Clean Air Act (CAA).

The Environmental Protection Agency (EPA) is taking final action to approve a state plan submitted by the State of South Carolina, through the South Carolina Department of Health and Environmental Control (SC DHEC) on December 19, 2014, and supplemented on September 17, 2018, June 19, 2019, and November 5, 2019, for implementing and enforcing the Emissions Guidelines (EG) applicable to existing Commercial and Industrial Solid Waste Incineration (CISWI) units. The State plan provides for implementation and enforcement of the EG, as finalized by EPA on June 23, 2016, applicable to existing CISWI units for which construction commenced on or before June 4, 2010, or for which modification or reconstruction commenced after June 4, 2010, but no later than August 7, 2013. The State plan also incorporates the CISWI technical amendments finalized by EPA on April 16, 2019. The South Carolina State plan establishes emission limits, monitoring, operating, recordkeeping, and reporting requirements for affected CISWI units.

The Environmental Protection Agency (EPA) is providing notice of and is codifying approval of negative declarations submitted by the District of Columbia Department of Energy and Environment (DCDOEE) on July 19, 2024 and August 28, 2024. The negative declarations submitted by the DCDOEE certify that there are no existing large municipal waste combustors (LMWC), crude oil and natural gas facilities (ONG), or electric utility generating units (EGU) subject to sections 111(d) and 129 of the Clean Air Act (CAA) within the jurisdiction of the District of Columbia.

The Environmental Protection Agency (EPA) is updating the materials that are incorporated by reference (IBR) into the Idaho State Implementation Plan (SIP). The regulations affected by this update have been previously submitted by Idaho 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 a typographical error.

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.

This regulation establishes tolerances for residues of propylene oxide (PPO) in or on sesame, seed; turmeric, roots, dried; ginger, dried; pepper, bell, dried; and pepper, nonbell, dried. ABERCO, Inc., a Balchem Company, 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 exemptions from the requirement of a tolerance for residues of the Bacillus thuringiensis Cry1B.34.1, Bacillus thuringiensis Cry1B.61.1, and Adiantum trapeziforme var. braziliense IPD083Cb proteins (hereafter Cry1B.34.1, Cry1B.61, and IPD083Cb proteins) in or on all food and feed commodities when used as plant-incorporated protectants (PIP). Pioneer Hi-Bred International Inc. (Pioneer) submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting exemptions from the requirement of a tolerance. This regulation eliminates the need to establish maximum permissible levels for residues of Cry1B.34.1, Cry1B.61, and IPD083Cb proteins when used in accordance with the terms of the exemption.

The U.S. Environmental Protection Agency (EPA) is finalizing changes to regulations promulgated under the Technology Transitions provision of the American Innovation and Manufacturing Act of 2020 (AIM Act), which authorizes the Administrator to restrict fully, partially, or on a graduated schedule, the use of a "regulated substance" in the sector or subsector in which they are used. This final rule addresses administrative petitions and input received from regulated industry and other interested parties relevant to requirements and restrictions across various refrigeration and air conditioning subsectors, including: refrigerated transport--intermodal containers; industrial process refrigeration and chillers for industrial process refrigeration used in semiconductor manufacturing; retail food supermarket systems; retail food remote condensing unit systems; cold storage warehouses; refrigerated laboratory centrifuges and laboratory shakers; and condensing units in residential and light commercial air conditioning and heat pumps. This final rule also allows the inventory of residential and light commercial air conditioning and heat pump equipment that was manufactured in the United States or imported into the United States before January 1, 2025, to continue to be installed.

The Environmental Protection Agency (EPA) is taking final action to approve, under the Clean Air Act (CAA or "Act"), revisions to the Arizona state implementation plan (SIP). These revisions concern the Arizona Department of Environmental Quality's (ADEQ's) demonstration regarding reasonably available control technology (RACT) requirements for the 2015 ozone national ambient air quality standards (NAAQS or "standards") within the Gila County portion of the Phoenix- Mesa ozone nonattainment area.

This regulation establishes an exemption from the requirement of a tolerance for residues of aluminum (CAS Reg. No. 7429-90-5) when used as an inert ingredient (seed treatment colorant) for seed treatment only at not more than 5% of pesticide formulation. Steptoe & Johnson, LLP on behalf of Sun Chemical, 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 aluminum, when used in accordance with the terms of those exemptions.

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.

The U.S. Environmental Protection Agency (EPA) is taking final action to extend the reporting deadline for the Health and Safety Data Reporting Rule under the Toxic Substances Control Act (TSCA) by one year to May 21, 2027.

The Environmental Protection Agency (EPA) is approving revisions to the Montana State Implementation Plan (SIP). These revisions specifically address sulfur dioxide (SO<INF>2</INF>) emission limits and associated requirements related to the Western Sugar Cooperative facility in Billings, Montana. The EPA is taking this action pursuant to the Clean Air Act (CAA).

The Environmental Protection Agency (EPA) is approving a request from the Minnesota Pollution Control Agency (MPCA) to revise its State Implementation Plan (SIP) by addressing changes at the Metropolitan Council Environmental Service (MCES) Metropolitan Council Wastewater Treatment Plant (Metro Plant) in Ramsey County, Minnesota, which is affected by title I SIP conditions. This SIP revision is being approved in conjunction with an amendment to a part 70 permit maintaining federally enforceable title I SIP conditions. This SIP revision will result in a reduction of allowable emissions of particulate matter less than 10 microns (PM<INF>10</INF>) emitted by the facility. The EPA proposed to approve this action on November 20, 2025.

The Environmental Protection Agency (EPA) is approving an element of a State Implementation Plan (SIP) submission from the Michigan Department of Environment, Great Lakes, and Energy (Michigan) regarding the infrastructure requirements of section 110 of the Clean Air Act (CAA) for the 2015 ozone National Ambient Air Quality Standards (NAAQS). The infrastructure requirements ensure that the structural components of each State's air quality management program are adequate to meet CAA requirements. This action pertains to CAA section 110(a)(2)(E)(ii). The EPA received comments on its November 20, 2025, proposed rule and withdrew the accompanying direct final rule. After considering the comments, the EPA is approving this element of Michigan's March 8, 2019, SIP submission.

The Environmental Protection Agency (EPA) is approving delegation of authority to the Northwest Clean Air Agency (NWCAA) for implementing and enforcing the Federal plan requirements for sewage sludge incineration (SSI) units. The Federal plan addresses the implementation and enforcement of emission limits and other control requirements for designated air pollutants. On December 11, 2018, the EPA Region 10 Regional Administrator and the Executive Director of NWCAA signed a Memorandum of Agreement (MOA) concerning delegation of authority of the Federal plan to NWCAA, which became effective upon signature. The geographic area covered by this MOA comprises Island, Skagit, and Whatcom Counties in the State of Washington, except in Indian country. This document informs the public of the MOA, provides a copy of the signed document, and amends regulatory text in accordance with the Clean Air Act (CAA).

The Environmental Protection Agency (EPA) is determining under the Clean Air Act (CAA) that the Cleveland, Ohio nonattainment area (hereafter also referred to as "Cleveland area" or "area") has attained the 2015 ozone National Ambient Air Quality Standard (NAAQS or standard). This determination is based upon complete, quality-assured, and certified ambient air monitoring data for the 2023-2025 design period showing that the Cleveland area achieved attainment of the 2015 ozone NAAQS. This determination relies on an exceptional events request submitted by the Ohio Environmental Protection Agency (Ohio EPA) on December 8, 2025, and concurred on by the EPA on January 12, 2026. The EPA is taking final agency action on Ohio's exceptional events request and the EPA's concurrence. As a result of this determination, the EPA is suspending the requirements for the State to submit an attainment demonstration and associated Reasonable Available Control Measures (RACM), Reasonable Further Progress (RFP) plans, contingency measures for failure to attain or make reasonable progress, and other planning SIPs related to attainment of the 2015 ozone NAAQS, for as long as the area continues to attain the 2015 ozone NAAQS. The EPA proposed to approve this action on February 27, 2026.

The Environmental Protection Agency (EPA) is approving portions of Illinois' 2015 ozone National Ambient Air Quality Standard (NAAQS or standard) Moderate nonattainment area State Implementation Plan (SIP) submittal for the Chicago and the Metro East St. Louis areas. The portions being approved are the reasonable further progress (RFP) demonstration, including the associated motor vehicle emissions budgets for 2023; the motor vehicle inspection and maintenance (I/M) program; the nonattainment new source review (NNSR) program; and the updated 2017 base year emissions inventories. The EPA is approving these portions of the State's SIP submittal pursuant to section 110 and part D of the Clean Air Act (CAA), and the EPA's regulations. The EPA is also finding adequate and approving the 2023 motor vehicle emissions budgets (budgets) for the Chicago and Metro East St. Louis Moderate ozone nonattainment RFP demonstration included in this SIP submittal. The EPA proposed to approve this action on February 12, 2026, and received no adverse comments.

The Environmental Protection Agency (EPA) is approving under the Clean Air Act (CAA) a request from the Indiana Department of Environmental Management (IDEM) to revise the Indiana State Implementation Plan (SIP) to incorporate revisions to nitrogen oxides (NO<INF>X</INF>) emissions monitoring, reporting, and recordkeeping requirements for new and existing large non-Electric Generating Units (non-EGUs) affected by the NO<INF>X</INF> SIP Call. This SIP revision would approve monitoring, reporting, and recordkeeping requirements that are permissible as alternatives under Federal rules for these sources for purposes of the NO<INF>X</INF> SIP Call.

This regulation establishes an exemption from the requirement of a tolerance for residues of oxirane, 2-phenyl-, polymer with oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether, sodium salt (1:2) (CAS Reg. No 2983072-24-6); (also known as oxirane, 2-phenyl-, polymer with oxirane, monooctyl ether, sulphosuccinated, disodium salt) when used as an inert ingredient in a pesticide chemical formulation under 40 CFR 180.960. Spring Regulatory Sciences on behalf of Evonik 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 oxirane, 2-phenyl-, polymer with oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether, sodium salt (1:2) on food or feed commodities when used in accordance with these exemptions.

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.

The Office of Management and Budget (OMB) proposes to revise the Guidance for Federal Financial Assistance to improve government- wide policies and requirements related to the management of grants, cooperative agreements, and other forms of assistance. OMB is proposing revisions that would improve transparency, accountability, and oversight for Federal awards across the Federal Government. This includes ensuring that American tax dollars are not wasted or misused, activities performed under Federal awards are consistent with law and policy, and recipients are held accountable when they fail to meet relevant standards. The revisions also aim to ensure that basic American principles of equality and equal opportunity are upheld throughout all stages of the award making process and that unlawful discrimination is no longer permitted. Proposed changes also include providing further clarification on the regulatory status of the OMB requirements and on the process for future updates to the government- wide requirements. Finally, OMB also proposes changes to reduce recipient burden. The listed Federal grant-making agencies propose conforming changes to their respective adopting regulations, or, in the case of some agencies and other entities, establishing new adopting regulations or policies. The proposed changes reflect the administration's commitment to transparency, accountability, and proper oversight for the Federal grantmaking process. The proposed regulations seek to ensure that American tax dollars are ultimately used to serve the needs of the American public.

The Environmental Protection Agency (EPA) is proposing to determine under the Clean Air Act (CAA) that the Detroit, Michigan nonattainment area ("Detroit area" or "area") attained the 2015 ozone National Ambient Air Quality Standards (NAAQS) by the applicable attainment date. This determination relies on the EPA's concurrence on an exceptional events request submitted by the Michigan Department of Environment, Great Lakes, and Energy (EGLE) on February 19, 2026, and concurred on by the EPA on March 24, 2026. Therefore, the EPA is proposing to take final agency action on Michigan's exceptional events request. This action, if finalized, will fulfill the EPA's statutory obligation to determine whether the Detroit area attained the 2015 ozone NAAQS by the Moderate attainment date of August 3, 2024.

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).

The Environmental Protection Agency (EPA) is proposing to determine 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 Big Six Towers Inc. (the Big Six), located at 59-55 47th Ave. Woodside, NY 11377 (the Facility), is approvable. The EPA is proposing to find that the control options in this SSSIP revision implement Reasonably Available Control Technology (RACT) with respect to oxides of nitrogen (NO<INF>X</INF>) emissions from the relevant Facility sources, which are identified as three oil-fired engines. This SSSIP revision is intended to implement NO<INF>X</INF> RACT for the relevant Facility sources in accordance with the requirements for implementation of the 2008 and 2015 ozone NAAQS. The EPA proposes to determine that this rulemaking will not interfere with ozone NAAQS requirements and meets all applicable requirements of the Clean Air Act (CAA).

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). The EPA is reopening the comment period on that proposed rule and requesting comment on several issues in particular.

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).

The Environmental Protection Agency (EPA) is extending the comment period for a proposed rule that published April 29, 2026. The current comment period for the proposed rule was scheduled to close on May 29, 2026. The EPA is extending the comment period for the proposed action to June 12, 2026.

The U.S. Environmental Protection Agency (EPA) is proposing an exemption for road and intermodal container transport refrigeration units (TRUs) from the leak repair requirements established under the American Innovation and Manufacturing (AIM) Act. In the final rule "Phasedown of Hydrofluorocarbons: Management of Certain Hydrofluorocarbons and Substitutes Under the American Innovation and Manufacturing Act of 2020," the EPA established, among other provisions, leak repair requirements for refrigerant-containing appliances with a charge size of 15 pounds or more that contain a hydrofluorocarbon (HFC) or certain substitutes for HFCs. The EPA intended to exempt refrigerant-containing road and intermodal container TRUs from the leak repair requirements and is issuing this proposal to clarify the applicability of these requirements. The EPA is not proposing other amendments or taking comment on any other aspects of the 2024 "Phasedown of Hydrofluorocarbons: Management of Certain Hydrofluorocarbons and Substitutes Under the American Innovation and Manufacturing Act of 2020."

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the Florida Department of Environmental Protection (FDEP) on August 15, 2023. The proposed revision makes minor updates to reporting requirements; adds, updates, and renames forms for several permit applications; renumbers and updates the effective dates of various forms to align with programmatic changes; and improves the process for submitting forms across several rules within the Florida SIP. Additionally, the revision removes a rule concerning administrative permit corrections from the SIP. EPA is proposing to approve these changes pursuant to the Clean Air Act (CAA or Act).

EPA issued significant new use rules (SNURs) under the Toxic Substances Control Act (TSCA) on April 24, 2026, for chemical substances subject to an Order issued 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 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. This document extends the comment period, which was scheduled to end on May 26, 2026, for 45 days.

In this proposed rulemaking, the U.S. Environmental Protection Agency (EPA) proposes a federal exemption, pursuant to Safe Drinking Water Act (SDWA) 1416(f) and 1450(a)(1), that will extend the dates of compliance with the Maximum Contaminant Levels (MCLs) for perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) from April 26, 2029, to April 26, 2031, for those systems that submit a request. The Agency requests comment on this proposal, including the mechanisms through which the MCL compliance deadlines for PFOA and PFOS can be exempted, and has identified specific areas where public input will be helpful for the EPA in developing the final rule. In addition to seeking written input, the EPA will be holding a public hearing on July 7, 2026.

The Environmental Protection Agency (EPA) is proposing to rescind its regulatory determinations to regulate four per- and polyfluoroalkyl substances (PFAS)--perfluorohexane sulfonic acid (PFHxS), perfluorononanoic acid (PFNA), hexafluoropropylene oxide dimer acid and its ammonium salt (HFPO-DA, commonly known as GenX chemicals), and mixtures of these three PFAS plus perfluorobutane sulfonic acid (PFBS)--under the Safe Drinking Water Act (SDWA). The EPA is also proposing to rescind all associated regulatory provisions currently codified in the EPA's 2024 PFAS National Primary Drinking Water Regulations (NPDWR) exclusive to these PFAS that were promulgated pursuant to the regulatory determinations that the EPA is now proposing to rescind, including the final Maximum Contaminant Levels (MCLs) that would have required monitoring, and where necessary, treatment by public water systems (PWSs). This proposed action is necessary to correct the unlawful procedure under which these regulations were promulgated. Under the EPA's prior interpretation, the EPA proposed and finalized regulatory determinations and regulations for these PFAS simultaneously and in tandem. Under the best reading of the statute, the EPA is not authorized to take such actions simultaneously and therefore, the Agency proposes to rescind those regulatory determinations, Maximum Contaminant Level Goals (MCLGs) and associated portions of the 2024 PFAS NPDWR. The EPA is seeking public comment on this proposal.

The U.S. Environmental Protection Agency (EPA) is reconsidering the Tier 4 criteria pollutant standards for new motor vehicles promulgated within the final rule entitled "Multi-Pollutant Emissions Standards for Model Years 2027 and Later Light-Duty and Medium-Duty Vehicles." This reconsideration will occur in two separate, but coordinated, rulemakings. In this Part 1 rulemaking, the EPA is proposing to amend the phase-in schedule for the Tier 4 criteria pollutant standards for certain vehicles to address changing circumstances and feasibility concerns. These amendments, if finalized, would extend the Tier 3 standards for certain vehicles to model years (MYs) 2027 and 2028 such that the Tier 4 standards for these vehicles would phase in starting with MY 2029. The EPA is also proposing other changes to the test protocols used to evaluate emissions performance for certification and related regulatory issues. Potential amendments to the Tier 4 standards and other program elements will be proposed separately in a future Part 2 rulemaking.

The U.S. Environmental Protection Agency (EPA or Agency) is proposing a Clean Water Act (CWA) regulation to revise the technology- based effluent limitations guidelines and standards (ELGs) promulgated in the 2024 "Supplemental Effluent Limitations Guidelines and Standards for the Steam Electric Power Generating Point Source Category" (2024 ELG). This proposed regulation for the steam electric power generating point source category applies to unmanaged combustion residual leachate (CRL) at existing sources and is estimated to reduce costs by $446 to $1,090 million dollars annually at a 3 percent discount rate.

The Environmental Protection Agency (EPA) is proposing to determine that the Portola nonattainment area in Plumas County, California, attained the 2012 annual fine particulate matter ("PM<INF>2.5</INF>") national ambient air quality standard (NAAQS or "standard") by the December 31, 2025 "Serious" area attainment date. This proposed determination is based on ambient air quality monitoring data from 2023 through 2025. We are also proposing to make a clean data determination (CDD) based on the 2023 through 2025 data. If we finalize this CDD, certain Clean Air Act (CAA) requirements that apply to the Portola nonattainment area will be suspended for so long as the area continues to meet the 2012 annual PM<INF>2.5</INF> NAAQS. The area would remain designated nonattainment for the 2012 annual PM<INF>2.5</INF> NAAQS, unless and until the State submits, and EPA approves, a redesignation request and maintenance plan for the area. We are taking comments on this proposal and plan to follow with a final action.

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 made a tentative determination that Alaska's hazardous waste program satisfies all requirements for final authorization. Thus, the EPA expects to grant 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). If the EPA issues a final approval of Alaska's hazardous waste program, Alaska's program will operate in lieu of the Federal hazardous waste program. The EPA will retain jurisdiction and authority to implement RCRA in Indian country and areas of exclusive Federal jurisdiction in Alaska. Alaska's application for final authorization is available for public review and comment until July 2, 2026. If sufficient public interest is demonstrated, the EPA will hold a public hearing on the application June 25, 2026. The EPA intends to publish a final determination in the Federal Register within 90 days of this tentative determination.