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On June 16, 2025, the U.S. Environmental Protection Agency (EPA) filed a motion with the U.S. Court of Appeals for the Fifth Circuit requesting that litigation over its 2024 final rule regulating chrysotile asbestos under the Toxic Substances Control Act (TSCA) be held in abeyance for an additional six months. According to the filing, EPA intends to initiate a new notice-and-comment rulemaking to reconsider certain provisions of the rule. The litigation, Texas Chemistry Council, et al. v. EPA,...

Download now. This week, I discuss with Patricia Underwood, Ph.D., DABT, MBA, Chief Toxicologist, Principal Director – Chemical and Material Risk Management, Office of the Assistant Secretary of Defense, Department of Defense, and my colleague, Richard E. Engler, Ph.D., Director of Chemistry for B&C and The Acta Group (Acta®), our consulting affiliate, the U.S. Department of Defense’s (DOD) recent Request for Information (RFI) on chemicals undergoing U.S. Environmental Protection...

On May 27, 2025, the U.S. Department of Defense (DOD) issued a request for information (RFI) to gather information to identify and assess critical applications for DOD and the defense industrial base (DIB) that necessitate the use of existing chemicals undergoing the U.S. Environmental Protection Agency’s (EPA) Toxic Substances Control Act (TSCA) Section 6 risk evaluation process. The RFI states that it will help the Office of the Assistant Secretary of Defense for Energy, Installations, and...

As reported in our February 14, 2025, blog item, on February 11, 2025, community and environmental groups submitted a petition under Section 21 of the Toxic Substances Control Act (TSCA) to the U.S. Environmental Protection Agency (EPA) to prohibit the use of hydrogen fluoride in domestic oil refining “to eliminate the extreme and unreasonable risks this use presents to public health and the environment.” On May 12, 2025, EPA denied the petition, stating that the request to initiate a...

On March 24, 2025, the U.S. Environmental Protection Agency (EPA) provided an update on the effective date of the Toxic Substances Control Act (TSCA) final risk management rule for trichloroethylene (TCE). As reported in our January 13, 2025, memorandum, on December 17, 2024, EPA issued a final rule prohibiting all uses of TCE, most of which would be prohibited within one year, including TCE manufacture and processing for most commercial and all consumer products. As reported in our January 30,...

The U.S. Environmental Protection Agency (EPA) released final risk management rules under the Toxic Substances Control Act (TSCA) for trichloroethylene (TCE) and perchloroethylene (PCE) on December 9, 2024, and for carbon tetrachloride (CTC) on December 11, 2024. EPA states that all uses of TCE will be banned over time, with “the vast majority of identified risks eliminated within one year,” and safer alternatives readily available for the majority of uses. The PCE rule will ban manufacture,...

On December 31, 2024, the U.S. Environmental Protection Agency (EPA) announced the availability of and solicited comment on the preliminary lists of manufacturers (including importers) subject to fees for the next five chemicals undergoing risk evaluation under Section 6(b) of the Toxic Substances Control Act (TSCA). 89 Fed. Reg. 107099. The five chemicals that have been designated as High-Priority Substances (HPS) for risk evaluation and for which fees will be charged are acetaldehyde (Chemical...

Download transcript. Recognizing it has much to do and little time to complete its tasks, the Office of Pollution Prevention and Toxics (OPPT) has been issuing final rules at a fast and furious rate since the election last month. This week, I discuss OPPT’s to-do list with my colleague, Dr. Richard E. Engler, Director of Chemistry for B&C and The Acta Group (Acta®), our consulting affiliate. In addition to multiple final Section 6 risk management rules, the U.S. Environmental Protection...

On November 13, 2024, the U.S. Environmental Protection Agency (EPA) announced the release of its final supplement to the risk evaluation and revised unreasonable risk determination for 1,4-dioxane under the Toxic Substances Control Act (TSCA). 89 Fed. Reg. 89993. EPA states in the Federal Register notice that it “used the best available science to prepare this final supplement to the risk evaluation and has determined that 1,4-dioxane poses unreasonable risk to human health.” EPA notes that...

On August 1, 2023, Earthjustice filed a petition under Section 21 of the Toxic Substances Control Act (TSCA) asking the U.S. Environmental Protection Agency (EPA) to establish regulations prohibiting the manufacturing, processing, use, and distribution of the chemical N-(1,3-Dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD) for and in tires. Earthjustice filed the petition on behalf of the Yurok Tribe, the Port Gamble S’Klallam Tribe, and the Puyallup Tribe of Indians, and EPA granted the...

On September 30, 2024, the U.S. Environmental Protection Agency (EPA) requested public comment on the manufacture of certain per- and polyfluoroalkyl substances (PFAS), including perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), and perfluorodecanoic acid (PFDA), during the fluorination of high-density polyethylene (HDPE) and other plastic containers to inform regulations as appropriate under the Toxic Substances Control Act (TSCA). 89 Fed. Reg. 79581. EPA notes that this request for...

The U.S. Environmental Protection Agency (EPA) issued a proposed rule on August 8, 2024, to address the unreasonable risk of injury to human health presented by 1-bromopropane (1-BP) under its conditions of use (COU) as documented in EPA’s August 2020 Risk Evaluation for 1-BP and the December 2022 Revised Risk Determination for 1-BP prepared under the Toxic Substances Control Act (TSCA). 89 Fed. Reg. 65066. To address the identified unreasonable risk, EPA proposes requirements to, among other...

On July 25, 2024, the Center for Environmental Health (CEH) and Public Employees for Environmental Responsibility (PEER) filed suit against the U.S. Environmental Protection Agency (EPA) in the U.S. District Court for the District of Columbia seeking a rule under Section 6 of the Toxic Substances Control Act (TSCA) to prohibit the production of perfluorooctanoic acid (PFOA) during Inhance Technologies, LLC’s (Inhance) fluorination process. As reported in our May 23, 2024, blog item on their...

The U.S. Environmental Protection Agency (EPA) announced on July 11, 2024, that it granted a petition filed under Section 21 of the Toxic Substances Control Act (TSCA) requesting that EPA establish regulations under TSCA Section 6 prohibiting the manufacturing, processing, use, distribution in commerce, and disposal of three per- and polyfluoroalkyl substances (PFAS) formed during the fluorination of plastic containers. EPA “will promptly commence an appropriate proceeding under TSCA Section...

On December 6, 2023, a group of Republican Representatives sent a letter to U.S. Environmental Protection Agency (EPA) Administrator Michael S. Regan regarding EPA’s risk evaluation of existing chemicals under the Toxic Substances Control Act (TSCA). According to the letter, the Representatives are “concerned that the EPA is using TSCA section 6 in a way that both subverts and supplants the statutory responsibilities of the Occupational Safety and Health Administration (OSHA).” The letter...

The U.S. Environmental Protection Agency (EPA) announced on October 19, 2023, a proposed rule that would amend the procedural framework rule for conducting risk evaluations under the Toxic Substances Control Act (TSCA). Published in the Federal Register on October 30, 2023, the proposed rule states that the purpose of risk evaluations under TSCA is to determine whether a chemical substance presents an unreasonable risk of injury to health or the environment, without considering costs or non-risk...

This week, we are re-releasing my conversation with Dr. Richard E. Engler, Director of Chemistry for B&C and The Acta Group (Acta®), our consulting affiliate, originally recorded in April. We discussed then a lawsuit challenging the U.S. Environmental Protection Agency’s (EPA) issuance of a Consent Order under Section 5(e) of the Toxic Substances Control Act (TSCA). As listeners may know, judicial challenges to TSCA Section 5(e) orders are rare, and this one is even more unusual because...

The U.S. Environmental Protection Agency’s (EPA) spring 2023 Unified Agenda, published on June 13, 2023, includes the following rulemakings under the Toxic Substances Control Act (TSCA) or the Toxics Release Inventory (TRI). Proposed Rule Stage Tiered Data Reporting to Inform Prioritization, Risk Evaluation and Risk Management under TSCA (RIN: 2070-AK62): EPA is developing a rulemaking under TSCA Sections 8(a) and (d) to establish reporting requirements based upon a chemical’s status in...

The U.S. Environmental Protection Agency (EPA) announced on May 11, 2023, that it will hold a webinar on June 7, 2023, at 1:00 p.m. (EDT) on its proposed rule under Section 6(a) of the Toxic Substances Control Act (TSCA) that would ban all consumer uses and most commercial uses of methylene chloride, “a chemical in commercial and consumer products known to cause serious health risks and even death.” As reported in our April 25, 2023, memorandum, EPA proposes prohibitions and...

On May 3, 2023, the U.S. Environmental Protection Agency (EPA) announced its intent to extend the January 6, 2023, compliance date on the prohibition on the processing and distribution of decabromodiphenyl ether (decaBDE) for use in wire and cable insulation in nuclear power generation facilities, and decaBDE-containing wire and cable insulation. As reported in our December 23, 2020, memorandum, decaBDE is one of the persistent, bioaccumulative, and toxic (PBT) chemicals that are...

On May 3, 2023, the U.S. Environmental Protection Agency (EPA) proposed to prohibit most uses of methylene chloride under Section 6(a) of the Toxic Substances Control Act (TSCA). 88 Fed. Reg. 28284. EPA states in its April 20, 2023, press release that its unreasonable risk determination for methylene chloride was driven by risks associated with workers, occupational non-users (ONU), consumers, and those in close proximity to a consumer use. EPA identified risks for adverse human...

May 17, 202311:00 a.m. - 12:00 p.m. EDTREGISTER NOW The U.S. Environmental Protection Agency’s (EPA) Office of Pollution Prevention and Toxics (OPPT) has advanced groundbreaking science policy initiatives in furtherance of implementation of the Toxic Substances Control Act (TSCA). As EPA advances New Approach Methodologies (NAM), cumulative risk assessment methodologies, and systematic review procedures, chemical stakeholders must understand directionally how these initiatives are influencing...

 The U.S. Environmental Protection Agency (EPA) will hold a virtual public preparatory meeting for the Science Advisory Committee on Chemicals (SACC) members, ad hoc reviewers, and the public to comment on and ask questions regarding the scope and clarity of the draft charge questions to be used for the May 8-11, 2023, review of two draft documents related to cumulative risk assessment under the Toxic Substances Control Act (TSCA). As reported in our March 1,...

The U.S. Environmental Protection Agency (EPA) announced on November 30, 2020, that it is inviting small businesses, governments, and not-for-profits to participate as Small Entity Representatives (SER) to provide advice and recommendations to two Small Business Advocacy Review (SBAR) Panels.  One Panel will focus on EPA’s development of a proposed rule to address unreasonable risks identified in EPA’s recently completed Toxic Substances Control Act (TSCA) risk evaluation for...

On October 11, 2022, the U.S. Chemical Safety Board (CSB) released its final investigative report into “a massive fire and explosions” at the Philadelphia Energy Solutions Refinery in Philadelphia, Pennsylvania, that occurred in June 2019. According to CSB, the incident occurred when a corroded pipe elbow ruptured, releasing process fluid into the refinery’s hydrofluoric acid (HF) alkylation unit. CSB states that over 5,000 pounds of “highly toxic” HF were released, “a...

The U.S. Environmental Protection Agency (EPA) announced on May 24, 2022, that it is extending the public comment period for the April 12, 2022, proposed rule that would prohibit ongoing uses of chrysotile asbestos to give stakeholders more time to review the proposed regulation and prepare comments. EPA is extending the comment period an additional 30 days, from June 13, 2022, to July 13, 2022. As reported in our April 7, 2022, memorandum, the proposed rule would ban chrysotile asbestos,...

The U.S. Environmental Protection Agency (EPA) proposed on April 12, 2022, to prohibit ongoing uses of chrysotile asbestos, the only known form of asbestos currently imported into the United States. 87 Fed. Reg. 21706. EPA proposes under Section 6(a) of the Toxic Substances Control Act (TSCA) to prohibit manufacture (including import), processing, distribution in commerce, and commercial use of chrysotile asbestos in bulk or as part of chrysotile asbestos diaphragms used in the chlor-alkali...

The U.S. Environmental Protection Agency (EPA) announced on February 14, 2022, that it will reopen the comment period for its draft revision to the risk determination for the cyclic aliphatic bromide cluster (HBCD) risk evaluation issued under the Toxic Substances Control Act (TSCA). As reported in our December 29, 2021, memorandum, EPA is reconsidering two key aspects of the risk determinations for HBCD. First, EPA proposes that the appropriate approach to these determinations under TSCA and...

On December 16, 2021, the U.S. Environmental Protection Agency (EPA) submitted to the Office of Management and Budget (OMB) a proposed rule under Section 6(a) of the Toxic Substances Control Act (TSCA) on asbestos (part 1: chrysotile asbestos). According to an item in the fall 2021 Unified Agenda, the TSCA Section 6(a) rulemaking is needed to address the unreasonable risks of chrysotile asbestos that were identified in a risk evaluation completed under TSCA Section 6(b). EPA reviewed...

On December 10, 2021, the Biden Administration released its Fall 2021 Unified Agenda of Regulatory and Deregulatory Actions. According to the U.S. Environmental Protection Agency’s (EPA) rule list, the Office of Chemical Safety and Pollution Prevention (OCSPP) is working on the following rulemakings under the Toxic Substances Control Act (TSCA). Rulemakings at the proposed stage include: Tiered Data Reporting to Inform Prioritization, Risk Evaluation, and Risk Management Under TSCA...

By Lynn L. Bergeson  The House Energy and Commerce Subcommittee on Environment and Climate Change held a hearing on October 27, 2021, on “TSCA and Public Health: Fulfilling the Promise of the Lautenberg Act.” The October 25, 2021, briefing memorandum notes that the Frank R. Lautenberg Chemical Safety for the 21st Century Act (the Lautenberg Act) comprehensively amended TSCA, “including key reforms to increase EPA’s authority to mandate testing, require EPA to...

On October 29, 2021, the U.S. Environmental Protection Agency (EPA) announced its response to a petition submitted under Section 21 of the Toxic Substances Control Act (TSCA) seeking a rule requiring cigarette manufacturers to eliminate the hazardous chemicals used and to develop new product designs that eliminate or reduce the cigarette butt disposal risks to the environment. 86 Fed. Reg. 59931. EPA states that TSCA Section 6(a) authorizes it to determine if a chemical substance or mixture in...

On October 7, 2021, the Office of Management and Budget’s (OMB) Office of Information and Regulatory Affairs (OIRA) completed its review of a proposed rule on “Regulation of Persistent, Bioaccumulative, and Toxic Chemicals Under TSCA Section 6(h); Phenol, Isopropylated Phosphate (3:1); Further Compliance Date Extension.” The U.S. Environmental Protection Agency (EPA) announced on September 3, 2021, an extension of certain compliance dates for Phenol, Isopropylated Phosphate (3:1)...

As reported in our January 6, 2021, blog item, the U.S. Environmental Protection Agency (EPA) issued final rules under Section 6(h) of the Toxic Substances Control Act (TSCA) for five persistent, bioaccumulative, and toxic (PBT) chemicals, including phenol, isopropylated phosphate (3:1) (PIP (3:1)) (86 Fed. Reg. 894). The final rules limit or prohibit the manufacture (including import), processing, and/or distribution in commerce of the five PBTs, with certain exceptions. In accordance with...

On June 11, 2021, the Office and Management and Budget released its “Spring 2021 Unified Agenda of Regulatory and Deregulatory Actions” (Regulatory Agenda). It includes an entry for an interim final rule planned by the U.S. Environmental Protection Agency (EPA) entitled “Regulation of Persistent, Bioaccumulative, and Toxic Chemicals Under TSCA Section 6(h); Reconsideration and Extension of Certain Compliance Dates.” This action, planned for publication in September 2021, would...

The U.S. Environmental Protection Agency (EPA) announced on May 27, 2021, that it has invited environmental justice communities and stakeholders to participate in environmental justice consultations regarding the development of a proposed risk management action under Section 6(a) of the Toxic Substances Control Act (TSCA) to address unreasonable risks presented by N-methylpyrrolidone (NMP). EPA will hold two identical consultation webinars, one on July 7, 2021, and the other on July...

On May 21, 2021, the U.S. Environmental Protection Agency (EPA) published its response to a portion of the petition it received February 8, 2021, from People for Protecting Peace River, Center for Biological Diversity, and 16 other organizations. 86 Fed. Reg. 27546. While the petition requested three actions related to the Toxic Substances Control Act (TSCA), EPA states that it has determined that only one of those actions is an appropriate request: a request to issue a test rule under TSCA...

The U.S. Environmental Protection Agency (EPA) published a Federal Register notice on April 28, 2021, announcing a 30-day comment period on the Toxic Substances Control Act (TSCA) Interagency Testing Committee’s (ITC) revisions to the Priority Testing List.  86 Fed. Reg. 22414.  In the 74th ITC Report, ITC revised the TSCA Section 4(e) Priority Testing List by adding the following 15 high-priority substances designated pursuant to TSCA Section 6(b) and 24 organohalogen...

The U.S. Environmental Protection Agency (EPA) will hold a webinar on February 3, 2021, “to educate stakeholders on the risk management process under the Toxic Substances Control Act (TSCA) and the findings in the final risk evaluation for Asbestos Part 1:  Chrysotile Asbestos.”  EPA states that the webinar will also give the public an opportunity to provide input on considerations the agency should take into account for managing these unreasonable risks.  Stakeholders who wish to...

The U.S. Environmental Protection Agency (EPA) announced on January 5, 2021, that it is inviting small businesses, governments, and not-for-profit organizations to participate as Small Entity Representatives (SER) to provide advice and recommendations to two Small Business Advocacy Review (SBAR) Panels. One Panel will focus on EPA’s development of a proposed rule to address unreasonable risks identified in EPA’s recently completed Toxic Substances Control Act (TSCA) risk evaluation...

On January 6, 2021, the U.S. Environmental Protection Agency (EPA) issued final rules under Section 6(h) of the Toxic Substances Control Act (TSCA) for five persistent, bioaccumulative and toxic (PBT) chemicals -- 2,4,6-tris(tert-butyl)phenol (2,4,6-TTBP) (86 Fed. Reg. 866); decabromodiphenyl ether (decaBDE) (86 Fed. Reg. 880); hexachlorobutadiene (HCBD) (86 Fed. Reg. 922); pentachlorothiophenol (PCTP) (86 Fed. Reg. 911); and phenol, isopropylated...

The U.S. Environmental Protection Agency (EPA) announced on December 8, 2020, that it received a complete manufacturer request to conduct a risk evaluation of octahydro-tetramethyl-naphthalenyl-ethanone (OTNE), a category of chemical substances consisting of four inseparable individual isomers.  International Flavors and Fragrances, Inc., Privi Organics USA Corporation, and DRT America, Inc. formally requested the risk evaluation through the OTNE Consortium managed by B&C® Consortia...

On November 25, 2020, the U.S. Environmental Protection Agency (EPA) released updates to the interim final list of manufacturers and importers subject to fees for the next 20 chemicals undergoing risk evaluation under Section 6(b) of the Toxic Substances Control Act.  According to EPA, “[t]he updated list includes additional manufacturers not identified on the final list of companies and removes manufacturers that self-identified in error or imported the chemical solely for the...

The U.S. Environmental Protection Agency (EPA) announced on November 9, 2020, that it is inviting small businesses, governments, and not-for-profits to participate as Small Entity Representatives (SER) to provide advice and recommendations to a Small Business Advocacy Review (SBAR) Panel for the cyclic aliphatic bromide cluster (HBCD).  The Panel will focus on EPA’s development of a proposed rule to address unreasonable risks identified in EPA’s recently completed Toxic Substances Control...

The U.S. Environmental Protection Agency (EPA) granted on October 6, 2020, a manufacturer request for a risk evaluation of octamethylcyclotetra-siloxane (D4), a chemical used to make other silicone chemicals and as an ingredient in some personal care products.  Through the American Chemistry Council’s Silicones Environmental, Health, and Safety Center, Dow Silicones Corporation, Elkem Silicones USA Corporation, Evonik Corporation, Momentive Performance Materials, Shin-Etsu Silicones...

In a letter dated July 28, 2020, the U.S. Environmental Protection Agency (EPA) acknowledged the receipt of a Toxic Substances Control Act (TSCA) Section 21 petition requesting EPA to “initiate a proceeding for the issuance of a risk management procedural rule under TSCA section 6” submitted on behalf of the National Association of Manufacturers, the American Coatings Association, the National Association of Home Builders, the Toy Association, and the U.S. Chamber of...

On July 31, 2020, the plaintiffs and EPA filed a joint case management statement in the U.S. District Court for the Northern District of California case seeking a rulemaking under Section 6 of the Toxic Substances Control Act (TSCA) to prohibit the addition of fluoridation chemicals to drinking water supplies.  Food & Water Watch, Inc. v. EPA, Case No. 3:17-cv-02162-EMC.  As reported in our June 12 and June 22, 2020, blog items, the court held a bench trial that...

On July 16, 2020, a coalition of non-governmental organizations (NGO) filed a petition in the U.S. Court of Appeals for the Ninth Circuit, challenging the U.S. Environmental Protection Agency’s (EPA) final risk evaluation for methylene chloride.  The NGOs seek review of EPA’s determination “that the chemical methylene chloride does not present an unreasonable risk of injury to health or the environment under certain conditions of use” and its decision not to consider “certain uses...

On June 3, 2020, the American Coatings Association (ACA), National Association of Manufacturers, Toy Association, National Association of Home Builders, and U.S. Chamber of Commerce petitioned the U.S. Environmental Protection Agency (EPA) to develop a risk management procedural rule under the Toxic Substances Control Act (TSCA).  According to ACA’s June 15, 2020, press release, ACA “believes that a procedural rule would provide guard rails to ensure consistency, transparency and effective...

The U.S. Environmental Protection Agency (EPA) is scheduled to publish a Federal Register notice on January 27, 2020, identifying the preliminary lists of manufacturers (including importers) of the 20 chemical substances that EPA designated as high-priority substances for risk evaluation and for which fees will be charged.  Publication of the Federal Register notice will begin a 60-day comment period during which manufacturers (including importers) will be required...