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On March 21, 2025, the U.S. Court of Appeals for the District of Columbia Circuit heard oral argument in a case challenging the U.S. Environmental Protection Agency’s (EPA) May 3, 2024, final rule amending the procedural framework rule for conducting risk evaluations under the Toxic Substances Control Act (TSCA). United Steel, Paper and Forestry, Rubber, Manufacturing, Energy, Allied Industrial and Service Workers International Union (USW) v. EPA, Consolidated Case No. 24-1151. If you have a...

On March 10, 2025, the U.S. Environmental Protection Agency (EPA) announced its intent to reconsider the May 3, 2024, rule amending the procedural framework rule for conducting risk evaluations under the Toxic Substances Control Act (TSCA) (2024 Risk Evaluation Framework Rule). According to EPA, it will initiate a rulemaking “that will ensure the agency can efficiently and effectively protect human health and the environment and follow the law.” As reported in our February 7, 2025,...

The U.S. Environmental Protection Agency (EPA) announced on March 11, 2025, the rescheduled meeting dates of the Science Advisory Committee on Chemicals (SACC) that had been previously scheduled for February 2025 to consider and review the draft risk evaluation for 1,3-butadiene. 90 Fed. Reg. 11737. The rescheduled preparatory meeting for the SACC to consider the scope and clarity of the revised draft charge questions for the peer review will now be held on March 25,...

The U.S. Environmental Protection Agency (EPA) announced on March 7, 2025, that it is extending the comment period on the draft risk evaluation for dicyclohexyl phthalate (DCHP) under the Toxic Substances Control Act (TSCA). EPA released the risk evaluation for DCHP on January 7, 2025, with a comment period that closed March 10, 2025. EPA states that it will soon publish a Federal Register notice extending the public comment period for an additional 60 days....

On March 5, 2025, the U.S. Environmental Protection Agency (EPA) extended the comment period on the draft scope of the risk evaluation to be conducted under the Toxic Substances Control Act (TSCA) for vinyl chloride. 90 Fed. Reg. 11315. As reported in our January 28, 2025, memorandum, under TSCA, the scope documents must include the conditions of use (COU), hazards, exposures, and the potentially exposed or susceptible subpopulations (PESS) that EPA expects to consider in...

The U.S. Environmental Protection Agency (EPA) announced on January 31, 2025, that it is extending the public comment period on the draft risk evaluation for 1,3-butadiene under the Toxic Substances Control Act (TSCA). 90 Fed. Reg. 8798. Comments that were due February 3, 2025, are now due March 5, 2025. EPA states in its announcement that to give the peer reviewers on the Science Advisory Committee on Chemicals (SACC) time to review any additional comments...

On January 16, 2025, the U.S. Environmental Protection Agency (EPA) announced the availability of and requested public comment on the draft scope of the risk evaluation to be conducted under the Toxic Substances Control Act (TSCA) for vinyl chloride. 90 Fed. Reg. 4738. EPA notes that under TSCA, the scope documents must include the conditions of use (COU), hazards, exposures, and the potentially exposed or susceptible subpopulations (PESS) that EPA expects to consider in conducting...

The U.S. Environmental Protection Agency (EPA) announced on September 3, 2024, the release of the draft risk evaluation for diisononyl phthalate (DINP) under the Toxic Substances Control Act (TSCA) for public comment. 89 Fed. Reg. 71270. EPA states in its August 30, 2024, press release that it preliminarily determined that two industrial uses and one consumer use “significantly contribute to the unreasonable risk of DINP out of the 45 uses evaluated.” EPA preliminarily determined that...

The U.S. Environmental Protection Agency (EPA) announced on July 25, 2024, that it is proposing to designate acetaldehyde, acrylonitrile, benzenamine, vinyl chloride, and 4,4-methylene bis(2-chloroaniline) (MBOCA) as high-priority substances (HPS) for risk evaluation under the Toxic Substances Control Act (TSCA). 89 Fed. Reg. 60420. EPA is providing a 90-day comment period, during which interested persons may submit comments on the proposed designations of these chemicals as HPSs for risk...

The U.S. Environmental Protection Agency (EPA) announced on May 20, 2024, the availability of and solicited public comment on the draft manufacturer-requested risk evaluation (MRRE) for di-isodecyl phthalate (DIDP) and the draft physical chemical, fate, and hazard assessments for di-isononyl phthalate (DINP) prepared under the Toxic Substances Control Act (TSCA). 89 Fed. Reg. 43847. In its May 17, 2024, press release, EPA states that it preliminarily determined that all but one of the uses of...

The U.S. Environmental Protection Agency (EPA) released a final rule on April 23, 2024, that amends the procedural framework rule for conducting risk evaluations under the Toxic Substances Control Act (TSCA). According to the final rule, published in the Federal Register on May 3, 2024, EPA reconsidered the procedural framework rule for conducting such risk evaluations and is revising certain aspects of that framework to align better with the statutory text and applicable court decisions,...

On May 3, 2024, comments by Lynn L. Bergeson were featured in Chemical Watch’s article on possible legal challenges to updated TSCA risk evaluation procedures. See – https://product.enhesa.com/1074319/publication-of-tsca-risk-evaluation-rule-starts-clock-for-parties-to-file-legal-challenge (subscription required)...

On April 16, 2024, the U.S. Environmental Protection Agency (EPA) announced the availability of and requested public comment on a draft document titled “Draft Risk Evaluation for Asbestos Part 2: Supplemental Evaluation Including Legacy Uses and Associated Disposals of Asbestos” (the Draft Asbestos Part 2). 89 Fed. Reg. 26878. EPA is evaluating legacy uses and associated disposals of asbestos, including chrysotile asbestos, five additional fiber types, asbestos-containing talc, and Libby...

The U.S. Environmental Protection Agency (EPA) published on March 26, 2024, a proposed rule requiring manufacturers (including importers) of 16 chemical substances to submit copies and lists of certain unpublished health and safety studies to EPA. 89 Fed. Reg. 20918. EPA identified 15 of the chemical substances as potential candidates for prioritization through a screening process based on a combination of hazard, exposure (including uses), and persistence and bioaccumulation characteristics....

The U.S. Environmental Protection Agency (EPA) announced on March 15, 2024, the availability of and solicited public comment on the 2024 draft risk evaluation for formaldehyde prepared under the Toxic Substances Control Act (TSCA). 89 Fed. Reg. 18933. EPA states that it “preliminarily finds that formaldehyde poses unreasonable risk to human health. The risk evaluation notes that these risks may not apply to everyone, everywhere and describes some of the sources of uncertainties in EPA’s...

The U.S. Environmental Protection Agency (EPA) announced on February 14, 2024, the list of ten scientific experts selected to review the 2023 draft risk evaluation for tris(2-chloroethyl) phosphate (TCEP) under the Toxic Substances Control Act (TSCA). Biographies of these experts are available in docket EPA-HQ-OPPT-2023-0265. EPA states that it will hold a virtual public meeting on March 5, 2024, to review the documents and draft charge questions being posed to the reviewers and address any...

On December 28, 2023, the U.S. Environmental Protection Agency (EPA) released comments from the letter peer review for its 2023 white paper presenting EPA’s quantitative approach for the human health risk assessment for part 2 of the Toxic Substances Control Act (TSCA) risk evaluation for asbestos. EPA notes in its December 28, 2023, press release that under the previous Administration, it narrowed the scope of the asbestos risk evaluation by reviewing only ongoing uses and...

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...

The American Chemistry Council (ACC) announced on September 20, 2023, that together with the Texas Chemical Council, it submitted a 60-day notice of intent to file suit for the U.S. Environmental Protection Agency’s (EPA) failure to complete manufacturer-requested risk evaluations (MRRE) for diisononyl phthalate (DINP) and diisodecyl phthalate (DIDP) under the Toxic Substances Control Act (TSCA). ACC states that EPA failed to complete the MRREs by TSCA’s mandatory deadline of three years and...

On August 3, 2023, the U.S. Environmental Protection Agency (EPA) announced the availability of and solicited public comment on the document entitled “White Paper: Quantitative Human Health Approach to be Applied in the Risk Evaluation for Asbestos Part 2 — Supplemental Evaluation including Legacy Uses and Associated Disposals of Asbestos” (White Paper) and related charge questions. 88 Fed. Reg. 51309. EPA states that it will be soliciting comments from expert ad hoc reviewers on the...