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On June 23, 2025, the U.S. Environmental Protection Agency (EPA) announced a 60-day extension of the postponement of specific regulatory provisions from its final rule on trichloroethylene (TCE) under the Toxic Substances Control Act (TSCA). The extension applies to conditions affecting uses of TCE which are covered by TSCA Section 6(g) exemptions. 

Additional Time for Compliance and Feedback 

The original rule, published on December 17, 2024 (89 FR 102568), included new requirements for how TCE can be used, even in cases where exemptions apply. These requirements were already postponed once, and as of June 20, 2025, EPA has further delayed their start date to August 19, 2025. 

This extension allow EPA to consider implementation issues and review any concerns raised by stakeholders. It also gives affected businesses more time to prepare for compliance. 

Comment Opportunities 

Anyone interested can view the related documents and submit comments by searching for Docket Number EPA-HQ-OPPT-2020-0642 on Regulations.gov. or can click on the link provided here. 

This action is part of EPA’s broader goal of managing chemical risks effectively while also ensuring that exemptions under TSCA are handled with regulatory clarity and sufficient transition periods for compliance. 

On June 23, 2025, the U.S. Environmental Protection Agency (EPA) published a final rule issuing Significant New Use Rules (SNURs) under the Toxic Substances Control Act (TSCA) for certain chemical substances that were previously submitted as Premanufacture Notices (PMNs) and subject to TSCA Orders. 

90-Day Advance Notification Required 

The rule requires manufacturers and processors to notify EPA at least 90 days prior to engaging in any activity deemed a significant new use. This advance notification allows EPA to assess and, if necessary, regulate the associated risks before the activity begins. 

The rule will take effect on August 22, 2025, and is scheduled to be officially announced in the Federal Register on July 7, 2025. The final rule is available in the Federal Register (90 FR 26437).  Relevant documents can also be accessed via Regulations.gov by searching the docket number (EPA-HQ-OPPT-2024-0077).