TCE rule compliance extension proposed to December 31, 2027
EPA proposed on Oct 14, 2026 to move four TCE rule deadlines to Dec 31, 2027. It is not final, so those Dec 18, 2026 dates still apply today.
EPA's TCE rule compliance extension and what applies now
EPA's proposed TCE rule compliance extension would move four deadlines to December 31, 2027. The October 14, 2026 proposal doesn't change current requirements: affected processors must still plan for December 18, 2026 (Federal Register, 91 FR 65148). Comments are due November 13, 2026, through regulations.gov under docket EPA-HQ-OPPT-2026-7327, RIN 2070-AL45 (proposal).
Which TCE rule compliance extension dates would move
The proposal would change four dates in 40 CFR 751.305, 751.307 and 751.313 (proposed rule, Unit I.C):
| Requirement | Current date | Proposed date |
|---|---|---|
| Ban on processing TCE as a reactant or intermediate | Dec 18, 2026 | Dec 31, 2027 |
| Ban on processing for, and industrial or commercial use of, TCE as a processing aid in the four listed uses below | Dec 18, 2026 | Dec 31, 2027 |
| Ban on disposal of TCE wastewater from those activities to industrial pre-treatment, industrial treatment or publicly owned treatment works (POTWs) | Dec 18, 2026 | Dec 31, 2027 |
| First HFC-134a step-down: TCE feedstock cut to 75% of baseline annual volume | Jun 7, 2027 | Dec 31, 2027 |
The four processing-aid categories cover these TCE uses (Unit I.C):
- process solvent in battery manufacture
- process solvent in polymer fiber spinning, fluoroelastomer manufacture and Alcantara manufacture
- extraction solvent in caprolactam manufacture
- precipitant in beta-cyclodextrin manufacture
For HFC-134a, only the first step-down moves. The later cuts in 40 CFR 751.307 stay as written: 50% by June 18, 2029, 25% by June 18, 2031 and zero by June 18, 2033.
Why EPA wants more time
Chemical processors told EPA that byproduct TCE above the regulatory threshold moves routinely between sites during manufacture of other chlorinated solvents. EPA says a December 18, 2026 processing ban could have significant negative impacts on US production of those solvents, and it proposed extending the processing-aid date based on American Chemistry Council comments (proposed rule, Units I.D and III.A).
The HFC-134a change came from Orbia Fluor & Energy Materials. Orbia told EPA that demand for HFC-134a in military, industrial, and medical applications is higher than the 2024 phase-out assumed, and that it received more AIM Act allowances than expected. Orbia expects demand from critical infrastructure and national security users to stay significant through the early 2030s (Unit III.B).
Could the dates change again?
EPA asks for comment on December 18, 2028, a later date some stakeholders requested, for the same uses. It also asks whether the final rule should take effect immediately or on an expedited date, for example 14 days, because December 18, 2026 is "fast approaching". EPA says the proposed dates may still change with the comments and the timing of the final rule (Unit IV).
The amendment text sets December 31, 2027. The Regulatory Flexibility Act paragraph says the extended compliance dates run "until 2028" (proposal). If you are building a compliance calendar from this notice, use December 31, 2027, the date in the amendment text.
Proposed changes to downstream notification and SDS text in 40 CFR 751.321 would be due 30 days after the final rule is published (Unit III.C). The earlier SDS deadlines, June 16, 2025 and December 16, 2025, have already passed.
What stays in the trichloroethylene ban
The TCE ban itself stays. The December 2024 final rule (89 FR 102568) prohibits manufacture, import, processing and distribution of TCE for all uses, with later dates and worker protections for some. These dates are already behind us:
- manufacture and import banned after March 17, 2025
- processing and distribution, including retail, banned after June 16, 2025
- most industrial and commercial use banned after September 15, 2025
- general batch vapor degreasing banned after December 18, 2025
Products with less than 0.1% TCE by weight are generally excluded, though not for wastewater provisions (2024 rule). The proposal doesn't change workplace chemical protection program dates (proposal). A separate postponement affects conditions attached to section 6(g) exemptions, as explained below.
Earlier TCE delays that are already final
The September 17, 2025 interim final rule (90 FR 44772) moved the ban on TCE as a processing aid in nuclear fuel manufacture to September 15, 2028. It also moved the wastewater disposal deadline for the reactant and processing-aid groups from September 15, 2025 to December 18, 2026. The October proposal would push that wastewater date to December 31, 2027. It would not move the nuclear fuel date.
Separately, EPA has used section 705 of the Administrative Procedure Act to postpone the conditions attached to the section 6(g) exemptions. After five shorter postponements, a May 5, 2026 notice postponed them "until the conclusion of judicial review" in USW v. U.S. EPA, No. 25-1055 (3rd Cir.), operative from May 18, 2026. This affects the exemption conditions only. The exempted uses still end on their set dates. And the court stay is gone: the Third Circuit lifted the remaining partial administrative stay on February 11, 2026.
Bigger changes may follow
EPA has opened a separate rulemaking, RIN 2070-AL41, to reconsider parts of the 2024 rule. It covers workplace exposure controls, some industrial and commercial use bans, and wider issues with TCE in HFC-134a manufacturing (proposed rule, Unit III). No proposed rule under RIN 2070-AL41 has been published yet, so watch the Federal Register for broader changes. This deadline proposal isn't a general delay.
What to plan for today
For the affected processing activities and wastewater disposal, keep planning for December 18, 2026. HFC-134a producers should keep June 7, 2027 as their first step-down date. Change those plans only when a final extension is in effect (current dates and proposed amendments).
You can see how RegAffairs AI answers "Is EPA extending the TCE ban compliance deadlines?", with its Federal Register sources.