Bookmark this index to all OSHA safety topics, which include many topics related to environmental compliance and safety.

U.S. Fish and Wildlife Service (Service), are reopening the public comment period on their 17 June 2025, proposed rule to remove the Gila chub (Gila intermedia) from the Federal List of Endangered and Threatened Wildlife. They are taking this action to allow all interested parties an additional opportunity to comment on the proposed rule. Comments previously submitted on the proposed rule need not be resubmitted and will be fully considered in their development of the final rule. They will accept comments received on or before 25 September 2026. POC is Heather Whitlaw, Field Supervisor, USFWS, Arizona Ecological Services Field Office; 602-242-0210; incomingazcorr@fws.gov. (Federal Register 10 September 2026 [Proposed Rule] Pages 57531-57532)

The purpose of this supplemental notice of proposed rulemaking is for the EPA and the Department of the Army ("the agencies") to supplement and seek additional comment on certain aspects of an earlier proposal, published on 20 November 2025, to revise the regulations defining the scope of waters federally covered under the CWA in light of the U.S. Supreme Court's 2023 decision in Sackett v. Environmental Protection Agency. As stated in the agencies' 20 November 2025 Notice of Proposed Rulemaking (NPRM), the agencies intend for this rulemaking to provide greater regulatory certainty and increase CWA program predictability and consistency by clarifying the definition of "waters of the United States." After consideration of the public comments received on the NPRM, the agencies are issuing this notice to supplement the NPRM with additional regulatory options on certain aspects of the proposed rule. Comments must be received on or before October 9, 2026. POC is Stacey Jensen, tele: (202) 566-0657; email: CWAwotus@epa.gov. (Federal Register 9 September 2026 [Proposed Rule] Pages 57284-57301)

The U.S. Environmental Protection Agency (EPA) is extending the Renewable Fuel Standard (RFS) compliance reporting deadline for the 2025 compliance year from 1 September 2026, to 1 October 2026. This rule is effective on 4 September 2026. For questions regarding this final rule, contact Nick Parsons, Office of Transportation and Air Quality, Transportation Sector Impacts and Standards Division, Environmental Protection Agency, 2000 Traverwood Drive, Ann Arbor, MI 48105; tele: (734) 214-4479; email: RFS-Rulemakings@epa.gov. (Federal Register 4 September 2026 [Rule] Pages 56780-56783)

EPA proposes to revise a regulatory definition under the Clean Water Act (CWA) permitting regulations pertaining to discharges in the contiguous zone and ocean. The proposal would revise the regulatory definition of "discharge of a pollutant" to reflect and faithfully implement the statutory exclusion of vessels and other floating craft that add pollutants in the contiguous zone or the ocean from inclusion in the definition of "discharge of a pollutant" or "discharge", and thus, from National Pollutant Discharge Elimination System (NPDES) program requirements. The proposed rulemaking would also make conforming and clarifying changes to the NPDES regulatory exclusion for vessels and other floating craft. The effect of these changes would be that the addition of pollutants by a vessel or other floating craft in the contiguous zone or the ocean that is not secured to the seabed would not be a discharge and would not require CWA NPDES permit authorization to add pollutants to those waters. Comments must be received on or before 19 October 2026. POC is Kenda Conley, Water Permits Division, Office of Water (7324G), EPA, 1200 Pennsylvania Avenue NW, Washington, DC 20460; tele: 202-564-0306; email: conley.kenda@epa.gov. (Federal Register 4 September 2026 [Proposed Rule] Pages 56819-56825)

Remedy Optimization is the systematic site review by a team of independent technical experts, at any phase of a cleanup process to identify opportunities to improve remedy protectiveness, effectiveness and cost efficiency, and to facilitate progress toward completion of site work.

The National Remedy Review Board consults and advises on some of the Superfund program's most complex remedy decisions to ensure national consistency in remedy selection. The Board advises and evaluates ongoing regional technical work during the scoping stage of the feasibility study for response decisions. NRRB review focuses on: advising on overall site management/response strategy addressing the need for additional data necessary to support nationally consistent remedy selection evaluating the range of alternatives that should be considered

This regional gathering of the Society for Ecological Restoration (SER) Southwest Chapter will bring together restoration practitioners, researchers, students, and conservation corps members to share knowledge, network, and explore ecological restoration in the Southwest. The theme for 2026 is "It's about time we got back to the Mojave Desert! This year's annual conference will be held November 12-14 at the College of Southern Nevada in Henderson, Nevada. We look forward to seeing you there!

The Society of Environmental Toxicology and Chemistry (SETAC) is dedicated to advancing environmental science and science-informed decision-making through collaboration, communication, education and leadership. We fulfill that purpose through events, publications, awards and education programs.

Ecological risk assessments provide information to risk managers about potential adverse effects of different risk management decisions. Examples include: Nationwide rulemaking. Setting environmental limits for chemicals. Superfund site-remediation. Pesticide application approval. Prioritizing environmental stressors for regulatory attention.

These Agency-wide guidelines are provided to improve the quality and consistency of EPA's ecological risk assessments. As a next step in a continuing process of ecological risk guidance development, the guidelines draw from a wide range of source documents including peer-reviewed issue papers and case studies previously developed by EPA's Risk Assessment Forum. The Guidelines expand on and replace the 1992 report Framework for Ecological Risk Assessment. EPA plans to follow the Guidelines with more detailed guidance in specific areas.

The Science Inventory is a searchable database of EPA's research products. Science Inventory records provide descriptions of the product, contact information, and links to available printed material or websites.

Predicting chemical dose and estimating the quantitative relationship between this dose and a response are critical components of risk assessment. EPA's Benchmark Dose Software (BMDS) provides easy access to numerous mathematical models. These models help risk assessors estimate the quantitative relationship between a chemical dose and a response. EPA's BMD tools include BMDS (Online, Desktop, pybmds), and Categorical Regression (CatReg).

A bill to amend sections 111, 169, and 171 of the Clean Air Act to clarify when a physical change in, or change in the method of operation of, a stationary source constitutes a modification or construction. (Congressional Record 7 August 2026 [Senate] Pages S4563-S4564)

The construction sector comprises establishments primarily engaged in the construction of buildings or engineering projects (e.g., highways and utility systems). Establishments primarily engaged in the preparation of sites for new construction and establishments primarily engaged in subdividing land for sale as building sites also are included in this sector.

The U.S. Army Corps of Engineers' The Corps Environment newsletter highlights how environmental stewardship supports military readiness, infrastructure resilience, public safety, and community well-being. Key themes include hazardous and military-munitions cleanup, the 3Rs explosives-safety program (Recognize, Retreat, Report), ecosystem restoration, natural-resource management, energy resilience, sustainable technologies, wildfire recovery, and partnerships with government agencies and communities. Overall, the newsletter presents environmental protection not simply as a regulatory responsibility, but as an important component of mission readiness, resilience, and long-term national security.

This page displays a list of documents managed by the Office of Enforcement and Compliance Assurance and designated as guidance documents. EPA's guidance documents generally lack the force and effect of law.

The U.S. Environmental Protection Agency's (EPA) Office of Enforcement and Compliance Assurance advances the agency's mission to protect human health and the environment and helps ensure all Americans have access to clean air, land, and water. In Fiscal Year (FY) 2025, the agency delivered strong results, including the highest number of civil enforcement case conclusions in nine years; continuing the agency's high-level performance for compliance monitoring activities; and bringing the most criminal charges against defendants since FY 2016. These and many other achievements demonstrate that even as EPA holds others accountable for complying with the law, it also holds itself accountable for effectively and efficiently delivering measurable results.

EPA is committed to ensuring the fair and transparent use of guidance documents. This portal helps users quickly locate EPA's active guidance documents on topics of interest. Guidance documents include memorandums, policy statements, handbooks and manuals, as well as documents formally titled as guidance. Guidance documents that have been superseded with newer guidance are not included. Note that guidance documents managed by EPA's regional offices will be added to this site once available.

Resources for information on radon.

EPA Science Models and Research Tools (SMaRT) Search is a searchable inventory of freely available models, tools, and databases from EPA's Office of Research and Development (ORD)

These refined dispersion models are listed in the Guideline of Air Quality Models (pdf) (531.03 KB, 11-29-2024, 89 FR 95034) and are required to be used for State Implementation Plan (SIP) revisions for existing sources and for New Source Review (NSR) and Prevention of Significant Deterioration (PSD) programs. The models in this section include the following: AERMOD Modeling System - A steady-state plume model that incorporates air dispersion based on planetary boundary layer turbulence structure and scaling concepts, including treatment of both surface and elevated sources, and both simple and complex terrain. CTDMPLUS - A refined point source gaussian air quality model for use in all stability conditions for complex terrain. OCD - A straight line Gaussian model developed to determine the impact of offshore emissions from point, area or line sources on the air quality of coastal regions.

A bill to amend the Toxic Substances Control Act to prohibit the manufacture, processing, use, and distribution in commerce of commercial asbestos and mixtures and articles containing commercial asbestos. (Congressional Record 4 August 2026 [Senate] Page S4432)

A bill to amend the Federal Water Pollution Control Act to clarify the definition of navigable waters. (Congressional Record 5 August 2026 [Senate] Pages S4474-S4475)

A bill to amend the Clean Air Act to require Congress to approve of the application of certain executive exemptions under that Act, to strike an exemption under that Act. (Congressional Record 21 July 2026 [House] Pages H5022-H5023)

A bill to amend the Clean Air Act to modify the handling of air quality monitoring with respect to prescribed fires. (Congressional Record 21 July 2026 [Senate] Pages S4187-S4188)

An exposure assessment attempts to answer the following questions for a particular substance or chemical: How much of the chemical will workers be exposed to during the manufacturing, processing, and use of the substance? How much of the chemical will be released to the environment during manufacturing, processing, and use of the substance? What environmental pathways are relevant for general population and environmental exposure? (indoor air, indoor dust, indoor surfaces, outdoor air, drinking water, surface water, etc) What routes of human exposure are relevant? (inhalation, ingestion, dermal, fetal)

Although grass species may often go unnoticed, they play a vital role in maintaining healthy ecosystems. Native grasses can prevent erosion, improve water quality, support biodiversity, and provide habitats for pollinators and wildlife. However, not all grass species benefit the environment. Invasive grass species have been putting down roots across the southeastern US and can negatively impact ecosystems by altering fire regimes, decreasing biodiversity, and outcompeting native species. But what impact do these grasses have on forested landscapes and what can be done to manage them? In this webinar, Chris Evans will discuss the biology, impact, and management of some commonly found invasive grass species including cogongrass, Johnsongrass, Japanese stiltgrass, and miscanthus.

The EPA is finalizing an extension of certain compliance dates applicable to certain entities subject to the risk-management rules for perchloroethylene (PCE) and carbon tetrachloride (CTC) under the Toxic Substances Control Act (TSCA). EPA is extending certain Workplace Chemical Protection Program (WCPP) compliance dates for non-federal owners and operators to match the existing compliance dates for federal agencies and their contractors. For both PCE and CTC, this action extends the compliance date for initial monitoring for inhalation exposure to June 21, 2027, and extends the compliance date to meet the existing chemical exposure limit (ECEL), establish a regulated area, institute a workplace information and training program, provide any required respiratory personal protective equipment (PPE), and establish a respiratory PPE program to September 20, 2027. For PCE, EPA is also extending the compliance date for federal entities to institute a workplace information and training program to September 20, 2027, and for non-federal entities to establish and implement an exposure control plan to December 20, 2027. This final rule is effective on July 28, 2026. POC is Bennett Thompson, telephone number: (202) 564-1071; email address: PCE.TSCA@epa.gov and CarbonTetrachlorideTSCA@epa.gov. (Federal Register 28 July 2026 [Rule] Pages 47145-47153)

A bill to amend the Federal Water Pollution Control Act to clarify the scope of an exemption from permits for the discharge of dredged or fill material. (Congressional Record 13 July 2026 [Senate] Page S3742)

A bill to eliminate certain requirements with respect to dredging and dredged material. (Congressional Record 11 June 2026 [Senate] Pages S2756-S2757)

A bill to amend the Solid Waste Disposal Act to provide for onsite storage in certain remote areas. (Congressional Record 23 June 2026 [Senate] Pages S3058-S3059)

A bill to require the Secretary of the Army, acting through the Chief of Engineers, to propose a new nationwide permit under the Federal Water Pollution Control Act for dredging projects. (Congressional Record 11 June 2026 [Senate] Pages S2756-S2757)

A bill to amend the Clean Air Act to preserve regulatory stability for motor vehicles, motor vehicle engines, nonroad vehicles, and nonroad engines. (Congressional Record 9 July 2026 [House] Pages H4378-H4380)

A bill to amend the Solid Waste Disposal Act to provide that solid waste shall not include certain recovered materials and recovered resources. (Congressional Record 11 June 2026 [House] Pages H4109-H4112)

The EPA is making corrections to the New Source Performance Standards Review for Stationary Combustion Turbines and Stationary Gas Turbines final rule ("Final NSPS Rule") that published in the Federal Register (FR) on 15 January 2026, and became effective on 15 January 2026. After publication, the EPA identified inadvertent technical and typographical errors in the Federal Register regulatory text and is correcting those errors. Effective on 17 August 2026. POC is John Ashley, Industrial Processing and Power Division (D243-02), 109 T.W. Alexander Drive, P.O. Box 12055, Research Triangle Park, North Carolina 27711; telephone number: (919) 541-1458; and email address: ashley.john@epa.gov. (Federal Register 16 July 2026 [Rule] Pages 43561-43569).

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. Comments must be received on or before 17 August 2026. POC is Felica Davis, Ph.D., tele: (919) 541-4857, email: davis.felica@epa.gov. (Federal Register 2 July 2026 [Proposed Rule] Pages 40494-40508)

The EPA is conforming EPCRA hazardous chemical inventory reporting regulations to the OSHA's Hazard Communication Standard amendments of 2012 and 2024. EPCRA and its regulations rely on the 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. This final rule is effective 21 August 2026. POC is Jennifer Barre, tele: (202) 564-9026 or (240) 644-4559; email: barre.jennifer@epa.gov. (Federal Register 22 June 2026 [Rule] Pages 37022-37043).

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. Comments must be received on or before 13 July 2026. POC is Stephen Senter; tele: (919) 541-3042; email: senter.stephen@epa.gov. (Federal Register 12 June 2026 [Proposed Rule] Pages 35639-35649)

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). This final action is effective on 13 July 2026. POC is Carrie Wheeler; tele: (919) 541-9771; email: wheeler.carrie@epa.gov. (Federal Register 12 June 2026 [Rule] Pages 35628-35631)

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. This final rule is effective on 3 June 2026. POC: Rachel Smoak, tele: (919) 541-0253; and email: smoak.rachel@epa.gov. (Federal Register 3 June 2026 [Rule] Pages 33484-33572)

The Coast Guard must approve marine foam fire-extinguishing systems. Currently, eight guidance documents set out the existing type approval criteria. The Coast Guard proposes to update and codify the type approval criteria to reflect current industry practices. Criteria updates would reflect advancements in technology, reduce certain testing and design requirements, and reduce the administrative burden on industry and the government. This deregulatory measure would result in cost savings for industry and the government. Comments and related material must be received by the Coast Guard on or before 27 July 2026. POC is John Miller, Coast Guard; telephone 571-608-3413, email John.H.Miller@uscg.mil. (Federal Register 26 May 2026 [Proposed Rule] Pages: 30557-30595)

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." Comments on this notice of proposed rulemaking must be received on or before 10 July 2026. POC is Annie Kee, tele: (202) 564-2056; email: kee.annie@epa.gov. (Federal Register 26 May 2026 [Proposed Rule] Pages 30532-30538)

EPA is finalizing changes to regulations promulgated under the Technology Transitions provision of the 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 1 January 2025, to continue to be installed. This final rule is effective on 27 July 2026. POC is Joshua Silver; tele: (202) 564-2473; email: silver.joshua@epa.gov. (Federal Register 26 May 2026 [Proposed Rule] Pages 31284-31330)

A bill to amend the Clean Air Act to reform the Renewable Fuel Standard, and for other purposes. (Congressional Record 28 April 2026 [House] Pages H3131-H3132)

EPA 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. Comments must be received on or before 17 June 2026. POC is Dr. Paul Shriner, tele: 202-566-1076; email: shriner.paul@epa.gov. (Federal Register 18 May 2026 [Proposed Rule] Pages 28487-28514)

A bill to amend the Clean Air Act to establish a procedure under which an ozone nonattainment area may be redesignated as an attainment area if certain requirements are met. A bill to amend the Clean Air Act to establish a procedure under which an ozone nonattainment area may be redesignated as an attainment area if certain requirements are met. (Congressional Record 27 April 2026 [House] Pages H3122-H3124)

A bill to require the Administrator of the Environmental Protection Agency to waive Reid Vapor Pressure requirements with respect to calendar year 2026. (Congressional Record 27 April 2026 [House] Pages H3122-H3124)

The EPA is withdrawing its proposed rule entitled "Definition of Hazardous Waste Applicable to Corrective Action for Releases From Solid Waste Management Units." The Agency issued the proposed rule to: amend the regulatory definition of hazardous waste applicable to corrective action to address releases from solid waste management units at hazardous waste treatment, storage, and disposal facilities permitted under the RCRA and make conforming amendments related to the definition amendment; and add the statutory corrective action authorities to the section of the regulations that provides notice that the statutory definitions, rather than the regulatory definitions, apply to certain sections of the statute. The Agency has concluded that the proposed revisions to the existing regulations would have complicated, rather than contributed to, efficient implementation of corrective action. For those reasons EPA has determined that withdrawal is appropriate. The proposed rule published on 8 February 2024 (89 FR 8598) is withdrawn as of 8 May 2026. POC is Barbara Foster, tele: (202) 566-0382, email: foster.barbara@epa.gov. (Federal Register 8 May 2026 [Proposed Rule] Pages 25266-25268)

EPA is extending the postponement of the effectiveness of certain regulatory provisions of the final rule entitled "Trichloroethylene (TCE); Regulation Under the Toxic Substances Control Act (TSCA)" until the conclusion of judicial review. Specifically, this postponement applies to the conditions imposed on the uses with TSCA section 6(g) exemptions. As of 18 May 2026, the conditions imposed on each of the TSCA section 6(g) exemptions in the final rule published on 17 December 2024, at 89 FR 102568 are postponed until the conclusion of judicial review. POC is Gabriela Rossner, tele: (202) 565-2426; email: TCE.TSCA@epa.gov. (Federal Register 5 May 2026 [Rule] Pages 24133-24135)

The May user call will be Tuesday, May 12th, 2026, at 2:00 PM (Eastern). This meeting will cover recent and upcoming release updates, including a recap of the 5/1 production release and a review of a known issue involving errors in the Unmanifested Waste Report when decimals are submitted. We will also preview the 5/13 pre-production release, with a focus on enhancements such as empty string validation, which will require testing by API submitters. Additional informational topics will be shared in the "Did You Know" segment, including updates on the Paper Sunset Rule, OCR improvements, manifest tracking numbers, generator IDs, and guidance on Section 8 cross-outs. The session will also introduce the desktop conversion tool and conclude with general reminders, including the upcoming S-Codes requirement effective 1/1/2027 and broader electronic manifesting updates.

A bill to amend the Safe Drinking Water Act with respect to lead contamination in school drinking water. (Congressional Record 30 April 2026 [House] Pages H3329-H3332)

On 17 March 2026, the EPA proposed a rule titled "National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review Reconsideration." The EPA is extending the comment period on this proposed rule, which is scheduled to close on 1 May 2026. The comment period will now end on 15 May 2026, to allow additional time for stakeholders to review and comment on the proposal. The EPA is extending the comment period for the proposed rule that published in the Federal Register (FR) on 17 March 2026, at 91 FR 12700. The EPA must receive written comments on or before 15 May 2026. POC Brian Langloss; tele: (919) 541-0675; and email: langloss.brian@epa.gov. (Federal Register 1 May 2026 [Proposed Rule] Pages 23382-23383)

Join hazardous materials management professionals from across North America at the 41st hazardous materials management conference in Nashville, TN October 11-15, 2026. The conference is the premier annual industry event where you can network with colleagues, increase your expertise through training, and attend sessions to transform your organization.

In this final rule, PHMSA is making certain editorial corrections and non-substantive changes to the accident reporting requirements for hazardous liquid and carbon dioxide pipeline facilities in the Federal Pipeline Safety Regulations (49 CFR parts 190-199). Specifically,?195.52 requires operators of hazardous liquid and carbon dioxide pipeline facilities to provide immediate notice of certain accidents to the National Response Center (NRC) either by telephone or electronically. The NRC no longer allows operators to provide electronic incident notifications. PHMSA is therefore revising?195.52(b) to remove all references to electronic NRC submissions. Operators must provide notices of accidents to the NRC by telephone to 800-424-8802 or, in Washington, DC, 202-267-2675. This correction will remove unnecessary delays in the process of operators reporting accidents to the NRC. This rule is effective 3 August 2026. POC is Angela Hill, Transportation Specialist, 1200 New Jersey Avenue SE, Washington, DC 20590, 202-680-2034, angela.hill@dot.gov. (Federal Register 24 April 2026 [Rule] Pages 22055-22058)

This DFR will amend facility response plan regulations to allow operators of oil pipelines to keep electronic copies of onshore oil spill response plans or the "relevant portions" of those plans in lieu of paper copies. The DFR is effective 3 August 2026, unless adverse comments are received by 23 June 2026. POC is Brooks Tate, Transportation Specialist, 1200 New Jersey Avenue SE, Washington, DC 20590, 202-281- 5413, brooks.tate@dot.gov. (Federal Register 24 April 2026 [Rule] Pages 22036-22039)

The Summit is a premier annual event in the EHS&S field, bringing together experts, thought leaders, and emerging professionals for three days of education, networking, and professional development. This year's agenda focuses on practical problem-solving, regulatory insights, and innovations in environmental and hazardous materials management. Attendees can look forward to advanced pre-conference workshops, technical sessions on the latest research and solutions, keynote speeches from industry leaders, an expanded exhibit hall with top vendors, and valuable networking opportunities to advance their careers

A bill to enhance safety requirements for trains transporting hazardous materials. (Congressional Record 2 March 2026 [House] Pages H2335-H2336)

The U.S. Environmental Protection Agency (EPA) is correcting a final rule that published in the Federal Register (FR) on 24 February 2026, and will become effective on 27 April 2026. The EPA finalized the repeal of specific amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Coal- and Oil-Fired Electric Utility Steam Generating Units (EGUs), commonly referred to as the Mercury and Air Toxics Standards (MATS), that were promulgated on 7 May 2024 ("MATS NESHAP"). This action corrects inadvertent typographical errors and minor omitted text in the Federal Register. The corrections described in this action do not affect the substantive requirements of the final rule that repeal specific amendments to the MATS NESHAP, promulgated on 7 May 2024. The correction is effective 27 April 2026. POC is Christopher Werner, tele: (919) 541-5133; and email: werner.christopher@epa.gov. (Federal Register 16 April 2026 [Rule] Pages 20368-20369)

A bill to direct the Administrator of the Environmental Protection Agency to amend regulations relating to exemptions for engines and equipment for purposes of national security. (Congressional Record 19 March 2026 [House] Pages H2620-H2621)

The EPA is publishing a draft list of contaminants that are currently not subject to any proposed or promulgated national primary drinking water regulations for public review and comment. These contaminants are known or anticipated to occur in public water systems and may require regulation under the SDWA in the future. The draft list provided in this document is the sixth Contaminant Candidate List (CCL) published by the Agency since the SDWA amendments of 1996. The draft Sixth Contaminant Candidate List (CCL 6 or the list) includes 75 chemicals, 4 chemical groups (disinfection byproducts (DBPs), microplastics, per- and polyfluoroalkyl substances (PFAS), and pharmaceuticals) and 9 microbes. The EPA seeks public comment on the draft CCL 6 and the process used to develop the draft CCL 6. The EPA will consider all information and comments received in response to this notice of availability for determining the final CCL 6. Comments must be received on or before 5 June 2026. POC is Thomas Lombardi, Standards and Risk Management Division, Office of Ground Water and Drinking Water; email: lombardi.thomas@epa.gov; tele: (202) 564-7653. (Federal Register 6 April 2026 [Proposed Rule] Pages 17186-17195)

Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program, this action proposes to list the refrigerant 2,3,3,3-tetrafluoropropene, also known as HFO-1234yf, as acceptable, subject to use conditions, in the motor vehicle air conditioning end-use for retrofit of heavy-duty pickup trucks and complete heavy-duty vans. This action supplements the Agency's November 10, 2025, proposal with respect to the proposed listings in the motor vehicle air conditioning end-use for retrofit of heavy-duty pickup trucks and heavy-duty vans (both complete and incomplete vans). The EPA is also supplementing that proposal to clarify the intended scope of that proposed rule. The EPA is providing an opportunity for public comment on the additional listing and the clarification. The EPA is not reopening the comment period for any portions of the November 10, 2025, proposal which are not explicitly addressed in this supplemental proposal. Comments on this supplemental proposal must be received on or before 6 May 2026 unless a public hearing is held. POC is Emily Maruyama tele: (202) 564-2809; email: maruyama.emily@epa.gov. (Federal Register 6 April 2026 [Proposed Rule] Pages 17176-17186)

Under the Clean Air Act (CAA), the U.S. Environmental Protection Agency (EPA) is required to determine the applicable volume requirements for the Renewable Fuel Standard (RFS) for years after those specified in the statute. The EPA is establishing the applicable volumes and percentage standards for 2026 and 2027 for cellulosic biofuel, biomass-based diesel (BBD), advanced biofuel, and total renewable fuel. The EPA is also partially waiving the 2025 cellulosic biofuel volume requirement and revising the associated percentage standard due to a shortfall in cellulosic biofuel production. Finally, the EPA is promulgating several regulatory changes to the RFS program, including removing renewable electricity as a qualifying renewable fuel under the RFS program (eRINs) and making minor revisions to the biogas provisions of the RFS program. This rule is effective on 15 June 2026, except for amendatory instruction 47, which is effective on 28 April 2026, and amendatory instruction 17, which is effective on 1 January 2027. POC is Dallas Burkholder, tele: 734-214-4766; email: RFS-Rulemakings@epa.gov. (Federal Register 1 April 2026 [Final Rule] Pages 16388-16500).

(Federal Register 27 March 2026 [Proposed Rule] Pages 14790-14797)

The EPA is proposing to improve protection of public health and recover valuable energy and mineral resources by designating scrap tires, including previously abandoned scrap tires, that are combusted in cement kilns, as non-waste fuel. In addition, the EPA is proposing to revise the definition of established tire collection program to include abandoned scrap tires that are recovered for use as fuel so they can be managed the same as collected scrap tires. These proposed regulatory changes support several goals of the Resource Conservation and Recovery Act (RCRA) by facilitating the use of abandoned scrap tires as a non-waste fuel and ingredient in Portland cement manufacturing while simultaneously reducing risks to human health and addressing environmental harms caused by tire piles. These proposed revisions are amendments to the Non-Hazardous Secondary Materials (NHSM) regulations, which establish standards and procedures for identifying whether non-hazardous secondary materials are solid wastes when legitimately used as fuels or ingredients in combustion units. Comments must be received on or before 22 May 2026. POC is Brian Knieser; tele: (202) 566-0516; email:knieser.brian@epa.gov. (Federal Register 23 March 2026 [Proposed Rule] Pages 13804-13811)

Standards for Air Curtain Incinerators That Only Burn Wood Wastes, Yard Wastes and Clean Lumber; Provision for Commercial and Industrial Solid Waste Incineration Units: Temporary Use Incinerators and Air Curtain Incinerators Used in Disaster Recovery (Draft) (Federal Register 20 March 2026 [Proposed Rule] Pages 13543-13559)

EPA is rescinding the interim final rule (IFR) titled "Commercial and Industrial Solid Waste Incineration Units: Temporary-Use Incinerators and Air Curtain Incinerators Used in Disaster Recovery." The IFR added temporary-use provisions that excluded certain commercial and industrial solid waste incineration (CISWI) units from otherwise applicable requirements when used on a temporary basis to combust non-hazardous debris in specified emergency or disaster circumstances. The EPA is rescinding those provisions and intends to address the same subject matter through notice-and-comment rulemaking culminating in a final rule. This rule is effective on 19 March 2026. POC is Dr. Felica Davis, tele: (919) 541-4857; and email: davis.felica@epa.gov. (Federal Register 19 March 2026 [Rule] Pages 13225-13227)

EPA is currently seeking nominations for National Drinking Water Advisory Council (NDWAC). Learn more about the NDWAC (https:www.epa.gov/ndwac) that provides EPA with advice and recommendations related to national drinking water programs. The Office of Water is seeking nominations of qualified candidates from the general public, states and local governments, and representatives of private organizations or groups demonstrating an active interest in safe drinking water.

On 5 April 2024, the EPA published the NESHAP: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review (2024 Final Rule). The 2024 Final Rule revised the Commercial Sterilization Facilities NESHAP based on a residual risk and technology review (RTR) pursuant to the Clean Air Act (CAA) sections. On 12 March 2025, the EPA announced that it was reconsidering the 2024 Final Rule. Based on its reconsideration of the RTR in the 2024 Final Rule, the EPA is proposing to amend the Commercial Sterilization Facilities NESHAP. The amendments would rescind the risk based standards, revise the standard for new aeration room vents that resulted from the technology review, revise the compliance demonstration requirements, and rescind a requirement related to permanent total enclosure (PTE). This proposal also includes technical corrections and clarifications to the Commercial Sterilization Facilities NESHAP and Performance Specification 19 to address erroneous cross-references, omissions of text, and typographical errors in the regulatory text that the EPA has identified after publication of the 2024 Final Rule. Comments must be received on or before 1 May 2026. POC is Brian Langloss, tele: (919) 541-0675; and email: langloss.brian@epa.gov. (Federal Register 17 March 2026 [Proposed Rule] Pages 12700-12736)

EPA is finalizing new source performance standards (NSPS) and emission guidelines (EG) for large municipal waste combustors (MWC). This rule responds to a voluntary remand of the previous rule and fulfills the Clean Air Act (CAA) section 129(a)(5) five-year review and a consent decree requirement. The rule revises emission limits for several pollutants, removes certain startup, shutdown, and malfunction exemptions, and updates recordkeeping, reporting, and electronic notification requirements. It also streamlines regulatory language, clarifies applicability dates, eliminates Title V requirements for certain air curtain incinerators, and makes technical corrections. EPA estimates the rule will reduce regulated pollutant emissions from existing sources by approximately 3,269 tons per year. This final rule is effective on 11 May 2026. POC is Noel Cope, tele: (919) 541-2128 and email: Cope.Noel@epa.gov. (Federal Register 10 March 2026 [Rule] Pages 11802-11887)

A bill to amend the Clean Air Act to exclude carbon dioxide, methane, and nitrous oxide from the definition of the term "air pollutant". (Congressional Record 12 February 2026 [House] Pages H2217-H2220)

The Environmental Protection Agency (EPA) is proposing to delay the compliance date for Facility Response Plan (FRP) requirements as well as to make language modifications to align with the Administration's climate change and environmental justice policies in Executive Order 14148 of January 20, 2025. These requirements are for onshore non-transportation-related facilities that could reasonably be expected to cause substantial harm to the environment from a CWA hazardous substance worst case discharge to navigable waters, adjoining shorelines, or the exclusive economic zone. This delay action is necessary to allow the Agency to consider implementation and compliance assistance tools that regulated parties may be able to take advantage of when complying with the new requirements. EPA notes that it cannot quantify the number, nature, and magnitude of covered discharges that may occur during the proposed rule delay period. Comments must be received on or before 6 April 2026. POC is Rebecca Broussard; tele: (202) 564-6706; email: broussard.rebecca@epa.gov. (Federal Register 5 March 2026 [Proposed Rule] Pages 10787-10792)

(Federal Register 5 March 2026 [Proposed Rule] Pages 10862-10901)

Federal Register 24 February 2026 [Proposed Rule] Pages 8970-9011

The U.S. Environmental Protection Agency (EPA or Agency) is publishing an advance notice of proposed rulemaking to seek feedback on reconsidering Clean Water Act Hazardous Substance Facility Response Plans regulations that were published in the Federal Register on 28 March 2024. This advanced notice of proposed rulemaking seeks feedback on potential amendments to address implementation challenges and clarify requirements from the 2024 final rule. Any resulting proposed amendments will align with Administration priorities and would prioritize opportunities to address regulatory burden while maintaining planning requirements to protect human health and the environment when responding to Clean Water Act Hazardous Substance worst case discharges. Comments must be received on or before 20 March 2026. POC is Rebecca Broussard, tele: (202) 566-0121; email: torres-rosa.christie@epa.gov. (Federal Register 18 February 2026 [Rule] Pages 7415-7420)

EPA is extending the postponement of the effectiveness of certain regulatory provisions of the final rule entitled "Trichloroethylene (TCE); Regulation Under the Toxic Substances Control Act (TSCA)" for an additional 90 days. Specifically, this postponement applies to the conditions imposed on the uses with TSCA section 6(g) exemptions. As of 17 February 2026, EPA further postpones until 18 May 2026, the conditions imposed on each of the TSCA section 6(g) exemptions, as described in this document, in the final rule published on 17 December 2024, at 89 FR 102568. POC is Gabriela Rossner, tele: (202) 565-2426; email:TCE.TSCA@epa.gov. (Federal Register 18 February 2026 [Rule] Pages 7401-7402)

In this action, the EPA is rescinding the Administrator's 2009 findings of contribution and endangerment and repealing all GHG emission standards for light-duty, medium-duty, and heavy-duty vehicles and engines to effectuate the best reading of CAA section 202(a)(1). The EPA determines that CAA section 202(a)(1) does not authorize the Agency to prescribe emission standards in response to global climate change concerns for multiple reasons, including the best reading of the statutory terms "air pollution," "cause," "contribute," and "reasonably be anticipated to endanger." This statutory interpretation is corroborated by application of the major questions doctrine. The EPA further determines that GHG emission standards for new motor vehicles and engines do not impact in any material way the public health and welfare concerns identified in the Administrator's prior findings in 2009. On these multiple and independent bases, the EPA concludes that it lacks statutory authority to regulate GHG emissions in response to global climate change concerns under CAA section 202(a)(1) and is not finalizing the additional bases for repeal set out in the proposed rule. This final action is effective on 20 April 2026. POC is Alan Stout tele: (734) 214-4805; email: stout.alan@epa.gov. (Federal Register 18 February 2026 [Rule] Pages 7686-7796)

A bill to require the use of artificial intelligence to review agency regulations (Congressional Record 22 January 2026 [House] Pages H1349-H1351)

A bill to amend the Toxic Substances Control Act to clarify the exemption for replacement parts. [Congressional Record 21 January 2026 [House] Pages H1170-H1172)

PHMSA proposes to amend the Hazardous Materials Regulations to adopt certain international regulations and standards related to proper shipping names, hazard classes, packing groups, special provisions, packaging authorizations, air transport quantity limitations, and vessel stowage requirements. These amendments are intended to maintain consistency with the latest international standards and regulations, and to reduce costs to entities or individuals within the United States or to otherwise lower the cost of regulations on the United States economy. Comments must be received by 13 April 2026. To the extent possible, PHMSA will consider late-filed comments while a final rule is developed. POC is Candace Casey, Standards and Rulemaking, at 202-366-8553, Pipeline and Hazardous Materials Safety Administration, U.S. Department of Transportation, 1200 New Jersey Avenue SE, East Building, 2nd Floor, Washington, DC 20590-0001. (Federal Register 10 February 2026 [Proposed Rule] Pages 5996-6071)

EPA is issuing a notice to correct some of the deadlines listed in the final rule, "Effluent Limitations Guidelines and Standards for the Steam Electric Generating Point Source Category--Deadline Extensions," which published in the Federal Register on 31 December 2025. After publication, the EPA became aware of post-signature typographical errors in the published regulatory text concerning compliance deadlines for pretreatment standards and related reporting recordkeeping requirements in the rule. This correction will ensure that the rule's compliance deadlines and reporting and recordkeeping deadlines match those in the version of the rule signed by the EPA Administrator. Effective on 2 March 2026. POC is Richard Benware, tele: 202-566-1369; email: benware.richard@epa.gov. (Federal Register 30 January 2026 [Rule] Pages 4016-4017)

A bill to amend the Clean Air Act to exclude certain units of facilities from the definition of solid waste incineration unit. (Congressional Record 10 December 2025 [House] Pages H5558-H5561)

PHMSA is adopting several amendments to the Hazardous Materials Regulations to reduce unnecessary regulatory burdens associated with the safe transportation of hazardous materials, including energy products. These amendments will reduce costs for hazardous materials transporters and eliminate unnecessary regulatory burdens on fuel transportation while maintaining or increasing the level of safety provided in the Hazardous Materials Regulations. This rule is effective 13 February 2026. POC is Alexander Wolcott, Standards and Rulemaking Division, 202-366-8553, Pipeline and Hazardous Materials Safety Administration, U.S. Department of Transportation, 1200 New Jersey Avenue SE, Washington, DC 20590-0001. (Federal Register 14 January 2026 [Rule] Pages 1433-1447)

EPA is finalizing amendments to the new source performance standards (NSPS) for stationary combustion turbines and stationary gas turbines pursuant to a review required by the Clean Air Act (CAA). As a result of this review, the EPA is establishing subcategories for new, modified, or reconstructed stationary combustion turbines based on size, rates of utilization, design efficiency, and fuel type. The EPA determined that combustion controls are the best system of emission reduction (BSER) for nitrogen oxide (NOX) emissions for most new, modified, or reconstructed stationary combustion turbines. For one subcategory, the BSER for NOX is combustion controls with the addition of selective catalytic reduction (SCR). The EPA further determined that the BSER for sulfur dioxide (SO2) emissions has not changed since the last NSPS review. Based on these determinations, the Agency is promulgating standards of performance in a new subpart of the Code of Federal Regulations (CFR). The Agency is also adding a subcategory for stationary combustion turbines that are used in temporary applications, exempting certain sources from title V requirements, and finalizing other provisions. The EPA is finalizing amendments to existing regulations to address or clarify specific technical and editorial issues. This final rule is effective on 15 January 2026. POC is John Ashley; tele: (919) 541-1458; and email: ashley.john@epa.gov. (Federal Register 14 January 2026 [Rule] Pages 1433-1447)

OSHA is correcting several inadvertent errors in its Hazard Communication Standard (HCS). Most errors relate to the HCS final rule published in the Federal Register on 20 May 2024. On 9 October 2024, the agency issued a corrections notification and technical amendment to correct errors in that final rule which the agency believed could lead to confusion during the classification process or errors on labels and Safety Data Sheets (SDSs) if not expeditiously corrected. Following publication of the 9 October 2024 corrections notification and technical amendment, OSHA continued its review of the regulatory text and identified additional minor and typographical errors in the regulatory text and appendices to the HCS. OSHA is issuing this correction document to address these additional minor errors. OSHA is also making one technical amendment to an appendix of the HCS unrelated to the 20 May 2024 final rule. The corrections in this document are effective 8 January 2026. POC is Tiffany DeFoe, Director, Office of Chemical Hazards, Metals, Directorate of Standards and Guidance email defoe.tiffany@dol.gov. (Federal Register 8 January 2026 [Rule] Pages 562-598)

EPA 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 µg/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 µg/L), 0.04 mg/L (40 µg/L), or 0.08 mg/L (80 µg/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. Comments must be received on or before 9 March 2026. POC is Anne Lausier, Standards and Risk Management Division, Office of Ground Water and Drinking Water (4607M), Environmental Protection Agency, 1200 Pennsylvania Ave. NW; tele: (202) 564-0518; email: NPDWRperchlorate@epa.gov. (Federal Register 6 January 2026 [Proposed Rule] Pages 398-444)

EPA 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 final rule is effective on 2 March 2026. POC is Richard Benware, Engineering and Science Division, Office of Water (Mail Code 4303T), Environmental Protection Agency, tele: 202-566-1369; email:benware.richard@epa.gov. (Federal Register 31 December 2025 [Rule] Pages 61328-31355)

A bill to ensure that Federal agencies rely on the best reasonably available scientific, technical, demographic, economic, and statistical information and evidence to develop, issue or inform the public of the nature and bases of Federal agency rules and guidance. (Congressional Record 1 December 2025 [House] Pages H4965-H4966)

Because the EPA received adverse comment, it is withdrawing the direct final rule entitled, "Effluent Limitations Guidelines and Standards for the Steam Electric Power Generating Point Source Category--Initial Notification Date Extension," published in the Federal Register on 2 October 2025. Effective 28 November 2025, the EPA withdraws the direct final rule published at 90 FR 47617, on 2 October 2025. The POC is Richard Benware, teler: (202) 566-1369; email: benware.richard@epa.gov. (Federal Register 28 November 2025 [Rule] Pages 54588).

Because the EPA received adverse comment, it is withdrawing the direct final rule entitled, "Effluent Limitations Guidelines and Standards for the Steam Electric Power Generating Point Source Category--Initial Notification Date Extension," published in the Federal Register on 2 October 2025. Effective 28 November 2025, the EPA withdraws the direct final rule published at 90 FR 47617, on 2 October 2025. The POC is Richard Benware, teler: (202) 566-1369; email: benware.richard@epa.gov. (Federal Register 28 November 2025 [Rule] Pages 54588).

EPA and the U.S. Department of the Army are publishing for public comment a proposed rule revising the regulations defining the scope of waters federally covered under the Federal Water Pollution Control Act, as amended, also known as the Clean Water Act, in light of the U.S. Supreme Court's 2023 decision in Sackett v. Environmental Protection Agency. With this proposed rule, the agencies intend to provide greater regulatory certainty and increase Clean Water Act program predictability and consistency by clarifying the definition of "waters of the United States." This proposed rule is also intended to implement the overall objective of the Clean Water Act to restore and maintain the quality of the Nation's waters while respecting State and Tribal authority over their own land and water resources. Comments must be received on or before 5 January 2026. POC is Stacey Jensen, tele: (202) 566-0657; email: CWAwotus@epa.gov. (Federal Register 20 November 2025 [Proposed Rule] Pages 52498-52546)

EPA is extending the postponement of the effectiveness of certain regulatory provisions of the final rule entitled "Trichloroethylene (TCE); Regulation Under the Toxic Substances Control Act (TSCA)" for an additional 90 days. Specifically, this postponement applies to the conditions imposed on the uses with TSCA section 6(g) exemptions. As of November 17, 2025, EPA further postpones until February 17, 2026, the conditions imposed on each of the TSCA section 6(g) exemptions, as described in this document, in the final rule published on December 17, 2024, at 89 FR 102568. POC is Gabriela Rossner, tele: (202) 565-2426; email:TCE.TSCA@epa.gov. (Federal Register 14 November 2025 [Rule] Pages 51027-51028)

EPA is finalizing an extension to the compliance dates applicable to certain entities subject to the regulation of methylene chloride promulgated under the Toxic Substances Control Act (TSCA). Specifically, EPA is finalizing an 18-month extension of the Workplace Chemical Protection Program (WCPP) and associated recordkeeping compliance dates for industrial or commercial laboratories that are not owned or operated by Federal agencies or contractors acting on behalf of the Federal government. Under this final rule, all non-Federal laboratories will share the same compliance dates with Federal and Federally contracted laboratories. EPA is finalizing an extension of the compliance dates for associated laboratory activities detailed in this final rule to avoid disruption of important functions of non-Federal laboratories such as the use of environmental monitoring methods needed for cleanup sites and wastewater treatment, as well as activities associated with university laboratories or law enforcement laboratories. This final rule is effective on 15 December 2025. POC is Daniel Whitby, tele: (202) 564-0598; email: MethyleneChlorideTSCA@epa.gov. (Federal Register 13 November 2025 [Rule] Pages 50894-50900).

This proposal presents the results of the U.S. Environmental Protection Agency's (EPA) residual risk and technology review for the National Emission Standards for Hazardous Air Pollutants (NESHAP) from Hazardous Waste Combustors (HWC) as required under the Clean Air Act (CAA). In this action, the EPA is proposing to establish emission limits and work practice standards for hydrogen fluoride and hydrogen cyanide emissions from HWC incinerators, cement kilns, solid fuel boilers, and liquid fuel boilers; eliminate the startup, shutdown, and malfunction (SSM) exemption; add a work practice standard for periods of SSM; add electronic reporting procedures and requirements; allow states to choose to exempt area sources from certain permitting requirements; and other clarifications and corrections. In response to comments received on certain aspects of the July 24, 2024, proposed revisions for periods of malfunction, the EPA is withdrawing that proposed rule and instead proposing different provisions to address periods of SSM. Comments must be received on or before 26 December 2025. POC is Rachel Smoak, tele: (919) 541-0253; and email: smoak.rachel@epa.gov. (Federal Register 10 November 2025 [Proposed Rule] Pages 50814-50855)

Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program, this action proposes to list several substitutes as acceptable, subject to use conditions, for residential and light commercial air conditioning and heat pumps, chillers, household refrigerators and freezers, motor vehicle air conditioning, and fire suppression and explosion protection. This action also proposes to update use conditions for substitutes previously listed for certain air conditioning end-uses and for water coolers. Comments must be received on or before December 26, 2025, unless a public hearing is held. POC is Emily Maruyama, tele: (202) 564-2809; email: maruyama.emily@epa.gov. (Federal Register 10 November 2025 [Proposed Rule] Pages 50766-50811)

A bill to prohibit the enforcement of laws relating to the installation, certification, and maintenance of emissions control devices under the Clean Air Act. (Congressional Record 14 October 2025 [Senate] Pages S7115-S7116)

This one-day virtual conference is your best opportunity to gain a 360° view of recent and expected developments under TSCA in the US, and what these changes mean for you and your business. As the overhaul of Biden-era policies and initiatives continues, the agenda will deliver valuable insight and analysis on critical issues such as risk evaluation and management rules, TSCA fee rule and funding uncertainty, enforcement and legal challenges, and industry concerns. Hear invaluable stakeholder perspectives from industry, regulators and NGOs, as well as proposed next steps to help you develop proactive responses to ensure compliance. Throughout the conference, there will also be opportunities to participate in interactive Q&As at the end of each session.

A bill to amend the Clean Air Act to prohibit the emission of any greenhouse gas in any quantity from any new electric utility steam generating unit (Congressional Record 18 September 2025 [House] Pages H4452-H4456)

A bill to amend the Federal Water Pollution Control Act to reauthorize Federal-State clean water program development and implementation authorities. (Congressional Record 17 September 2025 [House] Pages H4409-H4411)

(DRAFT) EPA is proposing changes to regulations promulgated under the Technology Transitions section of the American Innovation and Manufacturing Act of 2020, which authorizes the Administrator to restrict the use of particular hydrofluorocarbons in the sectors and subsectors in which they are used. This proposal addresses administrative petitions and other requests from companies and trade associations across a number of subsectors, including refrigerated transport--intermodal containers, industrial process refrigeration and chillers for industrial process refrigeration used in semiconductor manufacturing, retail food refrigeration systems for remote condensing units and supermarkets, cold storage warehouses, refrigerated laboratory centrifuges, laboratory shakers, and condensing units in residential and light commercial air conditioning and heat pumps. This action proposes to allow previously manufactured and imported residential and light commercial air conditioning and heat pump equipment to continue to be installed. The Agency is also seeking advance comment on potential actions to address supply chain issues for a refrigerant blend. Comments must be received on or before November 17, 2025. POC is Joshua Silver, tele: (202) 564-2473; email: silver.joshua@epa.gov. (Federal Register 3 October 2025 [Proposed Rule] Pages 47999-48019)