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Browse 622 rules and proposed rules from the Federal Register.
622
Total Regulations
Showing 91–120 of 622
Page 4 / 21
The Environmental Protection Agency (EPA) is proposing to approve revisions to Ohio air permitting rules into the State Implementation Plan (SIP) under the Clean Air Act (CAA). These revisions represent changes to the air permitting rules the Ohio Environmental Protection Agency (Ohio EPA) adopted on March 1, 2023, and July 25, 2025, which became effective at the State level on March 11, 2023, and August 14, 2025, respectively. These revisions will result in consistent requirements of rules at both the State and Federal level.
The Environmental Protection Agency (EPA) is updating the materials that are incorporated by reference (IBR) into the New Hampshire State Implementation Plan (SIP). The regulations affected by this update have been previously submitted by the State of New Hampshire 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 New Hampshire SIP. This update affects the materials that are available for public inspection at the National Archives and Records Administration and the EPA Regional Office.
Because the Environmental Protection Agency (EPA) received adverse comment, we are withdrawing the direct final rule Technical Amendments to the Emergency Planning and Community Right-to-Know Act (EPCRA) Hazardous Chemical Inventory Reporting Requirements to Conform to the 2024 OSHA Hazard Communication Standard, published in the Federal Register on November 17, 2025.
The Environmental Protection Agency (EPA) finds that Huntington Township in Huntington County, Indiana (hereafter referred to as "Huntington area") is attaining the 2010 sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS). EPA is approving Indiana's request to redesignate the Huntington area from nonattainment to attainment for the 2010 SO<INF>2</INF> NAAQS because the request meets the statutory requirements for redesignation under the Clean Air Act (CAA). EPA is also approving Indiana's maintenance plan for the area as part of Indiana's federally enforceable State Implementation plan (SIP).
The Environmental Protection Agency (EPA) is proposing to approve 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 updated 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 with no substantive change in content. This action is being taken under section 502 of the Clean Air Act (CAA).
The Environmental Protection Agency (EPA) is taking final action to approve a revision to the Mojave Desert Air Quality Management District (MDAQMD) portion of the California State Implementation Plan (SIP). The revision concerns definitions that are necessary to implement and enforce local rules that regulate air pollution under the Clean Air Act (CAA or the "Act"). We are also approving the rescission of earlier versions of this rule from the California SIP as they are no longer needed under the CAA.
The Environmental Protection Agency (EPA) is approving two State Implementation Plan (SIP) revisions submitted by the Commonwealth of Kentucky (Commonwealth), through the Energy and Environment Cabinet, Division of Air Quality (DAQ) on January 26, 2024, and February 15, 2024, to certify two requirements under the Clean Air Act (CAA or Act). These revisions establish that the Kentucky SIP satisfies the nonattainment new source review (NNSR) and base year emissions inventory requirements for the 2010 1-hour sulfur dioxide (SO<INF>2</INF>) national ambient air quality standard (NAAQS) for the Henderson-Webster SO<INF>2</INF> nonattainment area (hereinafter "Henderson-Webster SO<INF>2</INF> Nonattainment Area" or "Area"). EPA is approving these revisions pursuant to the CAA.
The Environmental Protection Agency (EPA) is proposing to approve revisions to the Missouri State Implementation Plan (SIP) received on March 19, 2025, that contain updates to the construction permit requirement regulations for stationary and portable air sources in Missouri that help ensure ambient air quality standards are met. The revisions to this rule include updating the fees for facilities applying for and receiving construction permits for air pollution sources; removing a subsection from the state rule that was never approved in the SIP; and making administrative wording changes. These revisions do not impact the stringency of the SIP or have an adverse effect on air quality. The EPA's proposed approval of this rule revision is being done in accordance with the requirements of the Clean Air Act (CAA).
The Environmental Protection Agency (EPA) is taking final action 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 certain amended or rescinded prohibitory and administrative rules. We are approving action on amended or rescinded rules that regulate the pollutants under the Clean Air Act (CAA or "Act").
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; Extension of an Alternative Closure Requirement Deadline." EPA is extending the comment period until February 6, 2026, in response to stakeholders' requests for a comment period extension.
The U.S. Environmental Protection Agency ("EPA" or the "Agency") is proposing a National Primary Drinking Water Regulation (NPDWR) for perchlorate and a health-based Maximum Contaminant Level Goal (MCLG) under the Safe Drinking Water Act (SDWA). In this action, the EPA is proposing to set the perchlorate MCLG at 0.02 mg/L (20 [micro]g/L). The EPA is also proposing and taking comment on setting an enforceable Maximum Contaminant Level (MCL) for perchlorate at 0.02 mg/ L (20 [micro]g/L), 0.04 mg/L (40 [micro]g/L), or 0.08 mg/L (80 [micro]g/L). The EPA is also proposing requirements for water systems to conduct monitoring for perchlorate in drinking water, take mitigation actions if the level exceeds the MCL, provide information about perchlorate to their consumers through public notification and consumer confidence reports, and report to their respective primacy agency. The Administrator has determined that the benefits of this regulation would not justify the costs; however, the EPA is required to issue an NPDWR and MCLG for perchlorate in response to the D.C. Circuit's decision in NRDC v. Regan.
Due to the receipt of an adverse comment, the Environmental Protection Agency (EPA) is withdrawing the November 20, 2025, direct final rule approving an element of a State Implementation Plan (SIP) submission from 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 Environmental Protection Agency (EPA) is taking final action to approve a revision to the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD or "District") portion of the California State Implementation Plan (SIP) concerning a rule submitted to address section 185 of the Clean Air Act (CAA or the "Act") with respect to the revoked 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS or "standard"). We are approving this local rule that was submitted as an equivalent alternative to a statutory section 185 program.
The Environmental Protection Agency (EPA) is finalizing revisions to the Regional Haze Rule (RHR) under the Clean Air Act (CAA) to change the due date for the next round of State Implementation Plans (SIPs) for the third implementation period from July 31, 2028, to July 31, 2031. Under the RHR, States must submit plans to protect visibility in mandatory Class I Federal areas to make reasonable progress towards the national goal of preventing any future, and remedying any existing, impairment of visibility in Class I areas.
The Environmental Protection Agency (EPA) is taking final action to approve a permitting rule submitted as a revision to the Placer County Air Pollution Control District (PCAPCD or "District") portion of the California state implementation plan (SIP). This revision concerns the District's Nonattainment New Source Review permitting program for new and modified major stationary sources of air pollution in nonattainment areas under part D of title I of the Clean Air Act (CAA or "Act"). We are approving a local rule that has been revised to address deficiencies previously identified by the EPA in a prior action that included a limited approval and limited disapproval of a prior version of the rule. This final action stops all sanction and Federal implementation plan clocks started by our September 26, 2023 limited approval and limited disapproval and deferred by our April 2, 2025 interim final determination.
U.S. Environmental Protection Agency (EPA or Agency) is approving a request to expand the boundary for the Northern Wasatch Front (NWF) 2015 8-hour ozone national ambient air quality standard (NAAQS) (2015 ozone NAAQS) nonattainment area (NAA). The request was submitted by the State of Utah on February 27, 2023. The newly expanded portion of the NWF NAA will have the same classification as the original NWF NAA under the 2015 ozone NAAQS and all applicable Clean Air Act (CAA) requirements will become applicable to the newly designated portion upon the effective date of the final action. The EPA is taking this action pursuant to the CAA.
The Oklahoma Department of Environmental Quality (ODEQ) has submitted updated regulations for receiving delegation and approval of its program for the implementation and enforcement of certain National Emission Standards for Hazardous Air Pollutants (NESHAP) for all sources as provided for under previously approved delegation mechanisms. The updated State regulations incorporate by reference certain NESHAP promulgated by the Environmental Protection Agency (EPA) at parts 61 and 63, as they existed through June 30, 2023. The EPA is providing notice that it is taking final action to approve the delegation of certain NESHAP to ODEQ. The delegation of authority under this action applies to sources located in certain areas of Indian country as discussed herein.
The Environmental Protection Agency (EPA) is proposing to approve revisions to the Colorado State Implementation Plan (SIP) that were submitted by the Colorado Department of Public Health and Environment (CDPHE) on May 20, 2022. CDPHE requested EPA approval of revisions to the Colorado's Procedural Rules and Common Provisions Regulation. The revised rules include non-substantive updates to rule language that are administrative in nature and were intended to provide for general cleanup and improved readability. The EPA is proposing approval of these SIP revisions because we have determined that they are in accordance with the requirements for SIP provisions under the Clean Air Act (CAA). In the "Rules and Regulations" section of this Federal Register, we are approving these SIP revisions 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 finalizing nitrogen oxide (NO<INF>X</INF>) and/or sulfur dioxide (SO<INF>2</INF>) limits for the indurating furnaces at five taconite facilities in accordance with the procedures set forth in the Federal Implementation Plan (FIP) addressing the requirement for best available retrofit technology (BART) at taconite facilities. EPA is also modifying the Upper Predictive Limit (UPL) equations used to establish NO<INF>X</INF> and SO<INF>2</INF> emission limits under the FIP. Finally, the EPA is revising reporting provisions to require reports be submitted to the EPA electronically. The EPA is finalizing these actions pursuant to Clean Air Act (CAA) sections 110 and 169A.
The Environmental Protection Agency (EPA) is taking direct final action to approve revisions to the Colorado State Implementation Plan (SIP) that were submitted by the Colorado Department of Public Health and Environment (CDPHE) on May 20, 2022. CDPHE requested EPA approval of revisions to the Colorado's Procedural Rules and Common Provisions Regulation. The revised rules include non-substantive updates to rule language that are administrative in nature and were intended to provide for general cleanup and improved readability. The EPA is approving these SIP revisions because it has determined that they are in accordance with the requirements for SIP provisions under the Clean Air Act (CAA).
The Environmental Protection Agency (EPA) is proposing to approve two separate requests from Maryland and Delaware to revise the designation for the Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE nonattainment area (hereafter referred to as the Philadelphia 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 proposing to revise the existing Philadelphia nonattainment area boundary into three distinct nonattainment areas that together cover the identical geographic area of the existing area. The EPA is also proposing to issue 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 U.S. Environmental Protection Agency (EPA or Agency) is amending the Code of Federal Regulations (CFR) to remove the provisions finalized by the EPA in a 2024 rule titled "Review of Final Rule Reclassification of Major Sources as Area Sources Under Section 112 of the Clean Air Act" (2024 Rule) and restoring the language of the final rule titled "Reclassification of Major Sources as Area Sources Under Section 112 of the Clean Air Act," published November 19, 2020, and with minor corrections published December 28, 2020. Under the Congressional Review Act (CRA), Congress passed, and the President signed, a joint resolution of disapproval of the 2024 Rule. The 2024 Rule amended the General Provisions that apply to National Emission Standards for Hazardous Air Pollutants (NESHAP) by requiring certain sources of persistent and bioaccumulative hazardous air pollutants (HAP) listed in Clean Air Act (CAA) section 112(c)(6) to continue to comply with major source emission standards under CAA section 112(d)(2) or standards under CAA section 112(d)(4) even if the sources reclassify as area sources. Under the joint resolution and by operation of the CRA, the 2024 Rule has no legal force or effect.
The U.S. Environmental Protection Agency (the EPA or Agency) is finalizing a Clean Water Act (CWA) rule to extend deadlines promulgated in the 2024 "Supplemental Effluent Limitations Guidelines and Standards for the Steam Electric Power Generating Point Source Category" (2024 rule), update the 2024 rule's transfer provisions to allow facilities to switch between compliance alternatives, and create authority for alternative applicability dates and paperwork submission dates, based on site-specific factors.
The U.S. Environmental Protection Agency (EPA) is proposing to grant, with conditions, no-migration variances for four categories/ groups of wastes, containing up to 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, UT. These variances will allow Clean Harbors to temporarily store treated hazardous wastes that are awaiting LDR compliance verification in put piles within their 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 disposal units 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 area and will be subject to the conditions set out in the Compliance Monitoring Plan section of this document.
The U.S. Environmental Protection Agency (EPA or Agency) is proposing to grant a petition to remove 2-Butoxyethyl benzoate (2-BEB) (Chemical Abstract Service (CAS) No. 5451-76-3) from the glycol ethers category in the list of hazardous air pollutants (HAP) in Clean Air Act (CAA). The EPA proposes to find that there are adequate data on the health or environmental effects of 2-BEB to support the request for removal. This action also details a streamlined approach to the review process of future petitions.
This regulation establishes time-limited tolerances for residues of flupyradifurone, including its metabolites and degradates, in or on sugarcane, cane and sugarcane, molasses. This action is in response to EPA's concurrence of a crisis exemption under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) authorizing use of the pesticide on sugarcane. This regulation establishes a maximum permissible level for residues of flupyradifurone in or on these commodities. The time-limited tolerances expire on December 31, 2028.
This regulation establishes tolerances for residues of thiamethoxam in or on pepper, black at 0.15 parts per million (ppm). Under the Federal Food, Drug, and Cosmetic Act (FFDCA), the American Spice Trade Association submitted a petition to EPA requesting that EPA establish a maximum permissible level for residues of this pesticide in or on this commodity.
The Environmental Protection Agency (EPA) is taking final action to approve portions of the state implementation plan (SIP) revisions submitted by the State of Arizona pursuant to 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 standards (NAAQS or "standards") as proposed, except for certain requirements related to prevention of significant deterioration (PSD), which EPA will defer action on until a later date. In addition, the EPA is approving regulatory provisions into the Arizona SIP and is amending regulatory text to include La Paz County as part of Mohave- Yuma Intrastate air quality control region (AQCR).