If your facility stores large quantities of chemicals near a creek, river, ditch, or storm drain, there has been a June 1, 2027 date hanging over you since 2024. That was the deadline EPA set for certain facilities to prepare and submit a Clean Water Act hazardous substance facility response plan, a worst-case discharge plan for chemicals that is separate from the oil spill plans many sites already keep.
On October 13, 2026, EPA published a final rule that moves that deadline three years, to June 1, 2030. The rule takes effect December 14, 2026.
Here is what changed, who it applies to, and why this is a good time to do the groundwork rather than shelve it.
This post is a plain-language summary, not legal advice. Read 40 CFR part 118 and the final rule before you change course.
What the final rule does
The rule, published at 91 FR 64774, makes three changes to EPA's Clean Water Act hazardous substance facility response plan (FRP) regulations at 40 CFR part 118:
- It delays the compliance date by three years. Facilities in operation on November 30, 2029 that meet the applicability criteria must prepare and submit an FRP, along with the Substantial Harm Certification Form in Appendix A, to their EPA Regional Administrator by June 1, 2030. Under the 2024 rule, that date was June 1, 2027.
- It removes references to climate change from the rule text, including in the definition of "adverse weather."
- It removes references to environmental justice from the rule text, including from the factors a Regional Administrator can weigh when deciding whether a facility could cause substantial harm.
EPA finalized the rule as it proposed it on March 5, 2026. It received 30 comments on the proposal. EPA estimates annualized cost savings of $25.97 million at a 7 percent discount rate and $17.95 million at 3 percent, in 2024 dollars.
The new deadlines at a glance
Based on the revised 40 CFR 118.4(a):
- Facilities in operation on November 30, 2029 that meet the criteria: submit the FRP and Substantial Harm Certification Form by June 1, 2030.
- Facilities that first meet the criteria after November 30, 2029, or that a Regional Administrator notifies: submit within six months.
- New facilities that start operating after June 1, 2030: submit before operations begin, with updates after a 60-day start-up period.
- Facilities that become covered after June 1, 2030 because of a planned change: submit before the changed portion starts operating. Because of an unplanned change: submit within six months.
One date is still unsettled. For facilities that meet the quantity and proximity screens but none of the substantial harm criteria, the deadline is in 40 CFR 118.4(c)(1). EPA's preamble indicates those facilities would submit the Substantial Harm Certification Form by June 1, 2030. But the amended rule text changes only 118.4(a), and eCFR still shows 118.4(c)(1) as facilities in operation on March 30, 2027 submitting by June 1, 2027, with 60 days for facilities that meet the screens later. Until EPA corrects that, plan for June 1, 2027, or confirm the date with your EPA Region.
Who is covered
The FRP rule applies to onshore, non-transportation-related facilities that meet all three tests in 40 CFR 118.3:
- Threshold quantity. The maximum amount onsite at any time of any Clean Water Act hazardous substance listed at 40 CFR 116.4 meets or exceeds 1,000 times its Reportable Quantity in 40 CFR 117.3. Mixtures are calculated under § 118.9.
- Proximity to water. The facility boundary or nearest opportunity for discharge is within one-half mile of navigable waters or a conveyance to navigable waters.
- Substantial harm. The facility meets at least one of four criteria: a worst-case discharge could injure fish, wildlife, and sensitive environments; could adversely impact a public water system; could injure public receptors; or the facility had a reportable hazardous substance discharge that reached navigable waters in the last five years.
EPA's sector table for the rule is broad. It lists chemical, plastics, metals, food and beverage, paper, and other manufacturing codes, plus utilities, warehousing, wholesalers, and even the construction NAICS codes. EPA is clear that the table is a guide only. Coverage turns on the 118.3 criteria, not your industry code.
Why EPA delayed it
EPA's reasoning, in its own words, is that "implementation and compliance with the 2024 rule will be extremely difficult" because tools and models "do not yet exist or have not been identified." The preamble points to the planning distance approach as one problem: facilities have to account for flow path, stormwater behavior and intensity, containment performance, and terrain, and EPA says it has not found models that handle the physical and chemical properties of each of the 296 CWA hazardous substances and their mixtures for both overland and in-water transport.
EPA also says it considered a delay of two years or less and rejected it as too short to build compliance tools and give facilities time to use them.
The delay also buys EPA time to reconsider the rule itself. On February 18, 2026, EPA published an advance notice of proposed rulemaking (91 FR 7415) asking for feedback on possible amendments to the 2024 rule. Comments closed May 19, 2026. EPA says some changes "cannot be made without an opportunity for notice and comment," so watch for a proposed rule.
What this does not change
The 2024 rule is still on the books. The applicability criteria in 118.3 did not change in this action, and the plan content requirements in 118.11 changed only to drop the climate change and environmental justice language from the hazard evaluation. If your site is covered, you still owe a plan. You just have until June 2030 to submit it, and the rule you plan against may change before then.
This rule is also separate from your oil obligations. If you have a Spill Prevention, Control, and Countermeasure (SPCC) plan or an oil FRP, nothing in this action changes those.
What to do now
- Run the screen once, on paper. Pull your chemical inventory and compare maximum onsite quantities against 1,000 times the Reportable Quantity for each listed CWA hazardous substance. Many sites will drop out here.
- Map your water. If you pass the quantity screen, check whether your fence line or nearest opportunity for discharge is within a half mile of navigable waters or a conveyance to navigable waters. Part 118 does not define "conveyance," so look hard at ditches, channels, and storm sewers that lead to a waterway, and ask your EPA Region if it is a close call.
- Write down the answer. A short, dated applicability memo protects you when people change roles between now and 2030.
- If you are likely covered, start the long-lead items. Worst-case discharge modeling and coordination with downstream public water systems take time, and EPA itself says the modeling is the hard part.
- Do not spend heavily on final plan details yet. EPA says it is considering compliance tools and changes to the underlying rule. Gather the data you will need either way, and hold off on polishing a plan format that could change.
- Watch for EPA's next step on the February 2026 advance notice, and for any compliance tools EPA releases.
Provisio EHS helps facilities run applicability screens, build chemical inventories that hold up, and plan for EPA and OSHA deadlines before they land. Safety-Chat and Provisio Core keep your chemical inventory and SDS library in one place, so the numbers you need for a screen like this are not scattered across spreadsheets. If you want a second set of eyes on whether this rule touches your site, call us at 385-316-2837.
Sources
All retrieved Oct 13, 2026, about 8:38 to 8:50 AM MDT (America/Denver).
- EPA, "Clean Water Act Hazardous Substance Facility Response Plans: Compliance Date Delay and Changes To Reflect Administration Policy," final rule, 91 FR 64774, Oct 13, 2026 (effective Dec 14, 2026; Docket EPA-HQ-OLEM-2021-0585): https://www.federalregister.gov/documents/2026/10/13/2026-20849/clean-water-act-hazardous-substance-facility-response-plans-compliance-date-delay-and-changes-to
- EPA, proposed compliance date delay, 91 FR 10787, Mar 5, 2026: https://www.federalregister.gov/documents/2026/03/05/2026-04388/clean-water-act-hazardous-substance-facility-response-plans-compliance-date-delay-and-changes-to
- EPA, "Clean Water Act Hazardous Substance Facility Response Plans; Amendment Reconsideration," advance notice of proposed rulemaking, 91 FR 7415, Feb 18, 2026: https://www.federalregister.gov/documents/2026/02/18/2026-03220/clean-water-act-hazardous-substance-facility-response-plans-amendment-reconsideration
- EPA, "Clean Water Act Hazardous Substance Facility Response Plans," final rule, 89 FR 21924, Mar 28, 2024: https://www.federalregister.gov/documents/2024/03/28/2024-05870/clean-water-act-hazardous-substance-facility-response-plans
- eCFR, 40 CFR 118.3, Applicability (text as of Oct 1, 2026): https://www.ecfr.gov/current/title-40/chapter-I/subchapter-D/part-118/section-118.3
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