On September 17, 2025, the Environmental Protection Agency (EPA or Agency) published an interim final rule addressing the Regulation of Trichloroethylene (TCE) under the Toxic Substances Control Act (TSCA) to revise certain compliance deadlines finalized in 2024. Specifically, EPA amended the prohibition compliance date for the use of TCE as a processing aid in the manufacture of nuclear fuel, with corresponding changes to the compliance dates for the manufacturing, processing and distribution in commerce of TCE to support such use, to a prohibition on September 15, 2028. EPA also amended the prohibition compliance date for the disposal of TCE to wastewater by processors of TCE and processors and industrial and commercial users of TCE as a processing aid, to begin on December 18, 2026. EPA also amended the compliance deadline for downstream notification, and the text required to be present in Safety Data Sheets, to accurately reflect the new prohibition compliance deadline for TCE used as a processing aid in the manufacture of nuclear fuel. EPA amended this compliance deadline to allow for 90 days after the publication of the interim final rule for manufacturers, processors, and distributors in commerce of TCE to make such a change. These revisions are necessary to address new information presented to EPA about inadvertent oversights in the original rulemaking and serious concerns that the facilities at issue will be unable to comply with the relevant requirements by the existing deadlines. EPA requested comments on all aspects of this interim final rule and will consider all comments received in determining whether amendments to this rule are appropriate after the conclusion of the comment period.