EPA TCE Ban Deadline Extension
Is EPA extending the TCE ban compliance deadlines?
Yes, but only for some uses. On October 14, 2026, EPA proposed pushing back two deadlines in the 2024 TCE rule, and the proposal is not final yet. The ban itself stays in place. EPA has already finalized one set of extensions (September 2025). Separately, it has postponed the worker-protection conditions attached to the section 6(g) exemptions until the court challenge is decided.
1. Proposed extensions (October 14, 2026; comments due November 13, 2026; docket EPA-HQ-OPPT-2026-7327)
| Requirement | Current date | Proposed date |
|---|---|---|
| Ban on processing TCE as a reactant/intermediate | Dec 18, 2026 | Dec 31, 2027 |
| Ban on processing for, and industrial/commercial use of, TCE as a processing aid in battery manufacture, polymer fiber spinning, fluoroelastomer and Alcantara manufacture, caprolactam extraction, and beta-cyclodextrin manufacture | Dec 18, 2026 | Dec 31, 2027 |
| Ban on sending TCE wastewater from those activities to 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 no more than 75% of baseline | Jun 7, 2027 | Dec 31, 2027 |
- The changes would amend 40 CFR 751.305, 751.307 and 751.313. They would also update the downstream notification and safety data sheet text in 751.321, which would have to be revised within 30 days of the final rule.
- Why EPA is doing this:
- Byproduct TCE. Byproduct TCE is shipped by railcar between sites to make other chlorinated solvents (perchloroethylene, carbon tetrachloride, methylene chloride, 1,2-dichloroethane). A December 2026 ban would force those streams to be incinerated, which risks breaching permits and closing facilities.
- HFC-134a. EPA says demand for HFC-134a in critical infrastructure and national security uses will stay high into the early 2030s.
- Length of the extensions. EPA calls them "no more than one year" and "no more than 6 and a half months".
- Why this matters now: unless EPA finalizes this before December 18, 2026, the current date still applies. Plan on that basis.
2. Extensions already final (interim final rule, September 2025)
- TCE as a processing aid in nuclear fuel manufacture: prohibition moved to September 15, 2028.
- The wastewater disposal ban for processors of TCE as a reactant/intermediate, and for certain processors and users of TCE as a processing aid, moved from September 15, 2025 to December 18, 2026. This lined it up with the processing ban. The October 2026 proposal would move it again, to December 31, 2027.
3. Exemption conditions postponed indefinitely (May 5, 2026 notice)
- Since May 18, 2026, the conditions attached to every section 6(g) exemption are postponed "until the conclusion of judicial review". One example is the conditions for specialty polymeric microporous sheet manufacturing (40 CFR 751.325(b)(6)).
- The case is USW v. U.S. EPA, No. 25-1055, in the Third Circuit. The court is now working through briefing on a revised schedule.
- This was the sixth postponement under section 705 of the Administrative Procedure Act. Earlier ones ran to June 20, 2025, August 19, 2025, November 17, 2025, February 17, 2026 and May 18, 2026.
- EPA says it will announce the new effective date in the Federal Register.
Bigger changes may follow. EPA is reconsidering parts of the 2024 rule in a separate rulemaking (RIN 2070-AL41). That covers workplace exposure controls, some industrial and commercial use bans, and wider HFC-134a issues. EPA also says it will act on points raised in three industry petitions filed in 2025 and later withdrawn, from the American Chemistry Council, PPG, and the battery sector alliance with Microporous.
Approach: The regulatory datasets I can search don't cover EPA's TSCA section 6 risk management rules, so I read the official Federal Register texts on GovInfo: the October 14, 2026 proposal and the May 5, 2026 postponement notice. I couldn't open EPA's own TCE webpages this time, so the September 2025 interim final rule details come from how the October 2026 proposal describes it.
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Which TCE uses get more time?
EPA's October 14, 2026 proposal would give more time to four groups of TCE activity: processing TCE as a reactant/intermediate, a listed set of processing-aid uses, wastewater disposal from those activities, and the first step of the HFC-134a feedstock phase-down. None of this is final yet. Separately, one use already has more time under a final rule: TCE as a processing aid in nuclear fuel manufacture, extended in September 2025.
Proposed extensions (proposed rule, 91 FR 65148, Oct 14, 2026; docket EPA-HQ-OPPT-2026-7327; comments due Nov 13, 2026)
| Use | Current deadline | Proposed deadline | Provision |
|---|---|---|---|
| Processing TCE as a reactant/intermediate (other than for HFC-134a) | Dec 18, 2026 | Dec 31, 2027 | 40 CFR 751.305(b)(9) |
| Processing for, and industrial/commercial use of, TCE as a processing aid in: • 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 | Dec 18, 2026 | Dec 31, 2027 | 751.305(b)(9) |
| Sending TCE from the two rows above to industrial pre-treatment, industrial treatment or POTWs | Dec 18, 2026 | Dec 31, 2027 | 751.313(h) |
| HFC-134a manufacture: first cut in TCE feedstock to no more than 75% of baseline | Jun 7, 2027 | Dec 31, 2027 | 751.307(b)(1) |
The HFC-134a extension covers only that first step-down. The proposed safety data sheet text keeps the end date for processing TCE as an intermediate for HFC-134a at June 18, 2033.
Already extended (final)
- Nuclear fuel manufacture (processing aid): the September 2025 interim final rule (90 FR 44772) moved the prohibition to September 15, 2028. It also moved the wastewater disposal deadline for the reactant/intermediate and processing-aid groups from September 15, 2025 to December 18, 2026. That is the date the October proposal would now push to December 31, 2027.
Uses the proposal leaves unchanged The proposed safety data sheet text restates the existing end dates for these uses:
- Vapor degreasing:
- December 18, 2025 in general
- Exceptions run to 2029 for DOD land-based defense systems
- 2031 for rocket engine cleaning, essential aerospace parts and medical-device narrow tubing
- 2034 for rayon fabric scouring for rocket booster nozzles
- Battery separators: lithium battery separators until 2029, lead-acid battery separators until 2044
- Specialty polymeric microporous sheet: until 2039
- Armed Forces vessels: until 2034
- Laboratory use: essential laboratory activities until 2074; asphalt testing until 2029 (manual centrifuge processes) or 2034
Things to watch in the proposal
- A later date is possible. EPA asks for comment on December 18, 2028, a deadline stakeholders requested, as an alternative to December 31, 2027 for the uses it proposes to extend.
- The final rule could take effect quickly. EPA asks whether the final rule should take effect immediately or within about 14 days, because December 18, 2026 is close. Until a final rule is published, December 18, 2026 still applies.
- The text contradicts itself on the year. The small-entity (RFA) discussion says the extensions run "until 2028". The amendments themselves and the rest of the preamble say December 31, 2027.
Approach: The regulatory datasets I can search don't cover EPA's TSCA section 6 risk management rules under 40 CFR Part 751. So I read the October 14, 2026 proposed rule in the official Federal Register on GovInfo.
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What deadlines apply right now?
Under the rule as it stands today (October 20, 2026), the next deadline is December 18, 2026. On that date the bans take effect on processing TCE as a reactant/intermediate, on the listed processing-aid uses, and on sending wastewater from those activities to treatment works or POTWs. These are the dates in 40 CFR Part 751 subpart D as amended by the September 2025 interim final rule. The October 14, 2026 proposal would move some of them, but it is not final, so it changes nothing yet.
Dates already passed (in force now)
- General ban, June 16, 2025: processing and distributing TCE has been banned since this date (751.305(b)(2), as the October 2026 proposal describes it). Only the uses listed below may continue, and only until their own end dates.
- Downstream notification, since December 16, 2025: anyone who makes, imports, processes or distributes TCE or a TCE-containing product must put EPA's set restriction text in SDS sections 1(c) and 15 with each shipment (751.321(d)-(e)).
- Vapor degreasing, December 18, 2025: open-top and closed-loop batch vapor degreasing ended in general on this date. The exceptions are in the table below.
Upcoming end dates under the current rule
| Use | Prohibited after | Provision |
|---|---|---|
| Processing as a reactant/intermediate (other than HFC-134a) | Dec 18, 2026 | 751.305(b)(9)(i) |
| Processing aid in battery manufacture, polymer fiber spinning, fluoroelastomer and Alcantara manufacture, caprolactam extraction, beta-cyclodextrin precipitation | Dec 18, 2026 | 751.305(b)(9)(ii) |
| Wastewater from the two rows above to pre-treatment, treatment or POTWs | Dec 18, 2026 | 751.305(b)(9)(iii), 751.313(h) |
| HFC-134a: TCE feedstock no more than 75% of baseline (first step-down) | Jun 7, 2027 | 751.307(b)(1) |
| Processing aid in nuclear fuel manufacture | Sep 15, 2028 | 751.305(b)(27) |
| Batch vapor degreasing for DOD land-based defense systems | Dec 18, 2029 | SDS text, 751.321(e) |
| Lithium battery separator manufacture | Dec 18, 2029 | 751.321(e) |
| Asphalt testing and recovery, manual centrifuge processes | Dec 18, 2029 | 751.321(e) |
| Vapor degreasing for rocket engine cleaning, essential aerospace parts, and narrow tubing in medical devices | Dec 18, 2031 | 751.321(e) |
| Processing as an intermediate for HFC-134a (final end date) | Jun 18, 2033 | 751.321(e) |
| Rayon fabric scouring for rocket booster nozzles; Armed Forces vessels and their systems; other asphalt testing | Dec 18, 2034 | 751.321(e) |
| Specialty polymeric microporous sheet manufacture | Dec 18, 2039 | 751.321(e) |
| Lead-acid battery separator manufacture | Dec 18, 2044 | 751.321(e) |
| Essential laboratory activities | Dec 18, 2074 | 751.321(e) |
Postponed with no date set
- Conditions on section 6(g) exemptions: since May 18, 2026, EPA has postponed the conditions attached to every section 6(g) exemption "until the conclusion of judicial review" in USW v. U.S. EPA, No. 25-1055 (Third Circuit). One example is the conditions for microporous sheet manufacture in 751.325(b)(6)(i)-(iv).
- The exempted uses themselves still end on the dates in the table. Only the conditions attached to them are postponed.
- New date: EPA says it will announce the new effective date in the Federal Register.
What could change before December 18
- Proposed new dates: the October 14, 2026 proposal would move the three December 18, 2026 rows to December 31, 2027. It would also move the June 7, 2027 HFC-134a step-down to December 31, 2027. Comments close November 13, 2026.
- Possible quick effect: EPA asks whether the final rule should take effect immediately or within about 14 days.
- SDS text: if the rule is finalized, the SDS text would have to be updated within 30 days of publication.
- Until then, plan for December 18, 2026.
Approach: The datasets I can search don't include EPA's TSCA section 6 rules in 40 CFR Part 751, and I couldn't open the eCFR page this time. So I took the dates in force from the amended regulatory text in the September 2025 interim final rule, and the status of each change from the May 2026 postponement notice and the October 2026 proposal, all in the Federal Register on GovInfo.
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