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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,...

On July 1, 2024, the U.S. Environmental Protection Agency (EPA) announced the release of the draft risk evaluation for 1,1-dichloroethane (1,1-DCE) and the draft human health hazard assessment supporting the draft risk evaluation for 1,2-dichloroethane (1,2-DCE, also known as ethylene dichloride) prepared under the Toxic Substances Control Act (TSCA). EPA states that it “preliminarily determined 1,1-dichloroethane poses unreasonable risk to human health (of workers) and the environment.”...

The U.S. Environmental Protection Agency (EPA) announced on March 23, 2023, that it is seeking public nominations of scientific and technical experts that EPA can consider for service as ad hoc reviewers assisting the Science Advisory Committee on Chemicals (SACC) with the peer review of the “2023 Draft Supplement to the 1,4-Dioxane Risk Evaluation.” 88 Fed. Reg. 17566. EPA states that it will release the draft supplement for public review and comment in June 2023. EPA also plans to...

After reading the article below by Jeffery Morris, former Director of the U.S. Environmental Protection Agency’s (EPA) Office of Pollution Prevention and Toxics (OPPT), we were inspired to post it.  We appreciate having the opportunity to share his analysis with our audience. TSCA as a Gap-Filling Statute:  Potentially Exposed and Susceptible Subpopulations By Jeffery Morris, PhD In its response to public comments on the scope documents for its next twenty chemical risk evaluations...

On June 28, 2019, the U.S. Environmental Protection Agency (EPA) released the draft risk evaluations for cyclic aliphatic bromide cluster (HBCD) and 1,4-dioxane, two of the first ten chemicals undergoing risk evaluation under the amended Toxic Substances Control Act (TSCA).  In its June 28, 2019, press release, EPA states in the draft risk evaluation for HBCD, it did not find unreasonable risk to the general population, consumers, workers, or the environment.  According to EPA, in...