ARTICLE · 27 OCTOBER 2026
EPA Releases Draft Risk Evaluations For Trans-1,2-Dichloroethylene And 1,2-Dichloropropane
The EPA has released draft risk evaluations for trans-1,2-dichloroethylene and 1,2-dichloropropane under TSCA, identifying unreasonable risks to workers and consumers from various exposure pathways. However, the recent Fifth Circuit decision in East Fork Enterprises v. EPA, which vacated EPA's methylene chloride rule and risk determination, casts significant uncertainty over the agency's ability to complete these and other pending risk evaluations by the February 2027 consent decree deadline while ensuring
The U.S. Environmental Protection Agency (EPA) continues to release draft risk evaluations under the Toxic Substances Control Act (TSCA) with the most recent ones released on August 27, 2026 (trans-1,2-dichloroethylene) and September 2, 2026 (1,2-dichloropropane). 91 Fed. Reg. 55337 and 91 Fed. Reg. 56882. EPA 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 under the conditions of use (COU), including unreasonable risk to potentially exposed or susceptible subpopulations (PESS) identified as relevant to the risk evaluation by EPA, and without consideration of costs or non-risk factors. Comments on the draft risk evaluation for trans-1,2-dichloroethylene are due October 26, 2026. Comments on the draft risk evaluation for 1,2-dichloropropane are due November 3, 2026.
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