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On December 18, 2024, the Environmental Protection Agency (EPA or Agency) published a final rule to address the unreasonable risk of injury to health presented by perchloroethylene (PCE) under its conditions of use. TSCA requires that EPA address by rule any unreasonable risk of injury to health or the environment identified in a TSCA risk evaluation and apply requirements to the extent necessary so that the chemical no longer presents unreasonable risk. EPA’s final rule is intended to prevent serious illness associated with uncontrolled exposures to the chemical by, among other things, preventing consumer access to the chemical, restricting the industrial and commercial use of the chemical while also allowing for a reasonable transition period where the industrial and commercial use of the chemical is being prohibited, providing a time-limited exemption for a critical or essential use of PCE for which no technically and economically feasible safer alternative is available, and protecting workers from the unreasonable risk of PCE while on the job. As described in more detail in the proposed and final rules, the Agency’s development of this rule incorporated significant stakeholder outreach and public participation, including public webinars and over 40 external meetings as well as required Federalism and Tribal consultations and a Small Businesses Advocacy Review Panel. EPA's final risk evaluation for PCE, describing the conditions of use is in docket EPA-HQ-OPPT-2019-0502, with the 2022 unreasonable risk determination and additional materials in docket EPA-HQ-OPPT-2016-0732.