Regulation Under the Toxic Substances Control Act: Carbon Tetrachloride

Carbon Tetrachloride (CTC); Regulation Under the Toxic Substances Control Act (TSCA); Request for Comment

DATES:

Comments must be received on or before November 10, 2025.

SUPPLEMENTARY INFORMATION:

I. Executive Summary

A. Does this action apply to me?

This action is directed to the public in general and may be of particular interest to those involved in the manufacture (including import), processing, distribution, use, and disposal of CTC or products containing CTC, related industry trade organizations, non-governmental organizations with an interest in human and environmental health, state and local governments, Tribal Nations, and/or those interested in the assessment or management of risks involving chemical substances and mixtures regulated under TSCA. As such, the Agency has not attempted to describe all the specific entities that this action might apply to. If you need help determining applicability, consult the technical contact listed FOR FURTHER INFORMATION CONTACT .

B. What is the Agency's authority for taking this action?

Under TSCA section 6(a) (15 U.S.C. 2605(a)), if the Agency determines through a TSCA section 6(b) risk evaluation that the manufacture, processing, distribution in commerce, use or disposal of a chemical substance presents an unreasonable risk of injury to health or the environment, EPA must by rule apply one or more requirements listed in TSCA section 6(a)(1)-(7) to the extent necessary so that the chemical substance no longer presents such risk.

C. What action is the Agency taking?

On December 18, 2024, EPA released the final risk management rule for CTC titled "Carbon Tetrachloride (CTC); Regulation Under the Toxic Substances Control Act (TSCA)" (89 FR 103512 (FRL-8206-02-OCSPP)) (hereinafter "CTC final rule"). Following its publication, EPA received several petitions for review related to the rule. These petitions for review were consolidated in the U.S. Court of Appeals for the Eighth Circuit. On September 12, 2025, EPA announced its decision to reconsider the CTC final rule through further rulemaking. In that announcement, the Agency expressed its intent to open a comment period on the final rule. EPA is now soliciting early stakeholder input regarding its intended reconsideration of the rule. EPA invites public comment on requirements and implementation of the CTC final rule (89 FR 103512), particularly on the topics described in Unit II. The information received in response to this notice will inform EPA's considerations of these provisions.

This review is being done in accordance with applicable law, Executive Orders, and Administration policies, including Executive Order 14219, "Ensuring Lawful Governance and Implementing the President's `Department of Government Efficiency' Deregulatory Initiative" (90 FR 10583, February 19, 2025), and EPA's Powering the Great American Comeback Initiative Pillar I: Clean Air, Land, and Water for Every American.

D. What should I consider as I prepare my comments?

1. Submitting CBI.

Do not submit CBI to EPA through https://www.regulations.gov or email. If you wish to include CBI in your comment, please follow the applicable instructions at https://www.epa.gov/dockets/commenting-epa-dockets#rules and clearly mark the information that you claim to be CBI. Information so marked will not be disclosed except in accordance with procedures set forth in 40 CFR parts 2 and 703, as applicable.

2. Tips for preparing your comments.

When preparing and submitting your comments, see the commenting tips at https://www.epa.gov/dockets/commenting-epa-dockets.

II. Request for Comment

EPA invites public comment on all aspects of the CTC final rule, including but not limited to any existing or anticipated implementation issues associated with the final rule requirements, experiences with the CTC final rule since it went into effect, and whether the Agency should consider additional or alternative measures or approaches to address the unreasonable risk presented by CTC under the conditions of use. Additional information on the following is of particular interest to EPA:

• The Existing Chemical Exposure Limit (ECEL) of 0.03 parts per million (ppm) as an 8-hour time weighted average (TWA) promulgated in the CTC final rule as part of the Workplace Chemical Protection Program (WCPP) (see 40 CFR 751.703 and 751.707(b)), including feasibility of exposure monitoring and whether the use of a different exposure limit would be more appropriate to inform risk management.

To the extent possible, the Agency asks commenters to please cite and provide any public data related to or that supports comments provided, and to the extent permissible, describe and provide any supporting data that are not publicly available.

Authority: 15 U.S.C. 2605.