Washington Notice of Termination (NOT) (2026)

When can a Washington construction site file its Notice of Termination?

Washington accepts a SWPPP prepared by the operator — no professional licence is required to write it. The clause we verified for Washington is about who may prepare the SWPPP, not about who files the termination notice. Washington's termination conditions and its form were not scanned, so read them off the permit itself — the link is at the foot of this page.

Source: Ecology CSWGP (2026-01-01 – 2030-12-31), S9 versus S4.BVerified

What Washington's permit says about who may prepare the plan

The Permittee must prepare and properly implement an adequate Stormwater Pollution Prevention Plan (SWPPP)…

Ecology CSWGP (2026-01-01 – 2030-12-31), S9 versus S4.B — verbatim permit text, read 2026-08-03

Our reading of Ecology CSWGP (2026-01-01 – 2030-12-31), S9 versus S4.B:Washington requires the permittee to prepare the SWPPP; the Certified Erosion and Sediment Control Lead requirement applies to site inspections.

What it ends, and what it does not

The Notice of Termination ends permit coverage. Filing it early is the expensive mistake: coverage stops while the site can still discharge, and the discharges after that point are not covered by anything.

The condition that usually governs is final stabilization. Under the federal stabilization clause (Part 2.2.14, Table 2), stabilization has to be initiated immediately in any area where construction has permanently ceased, or will be temporarily inactive for 14 or more calendar days — "immediately" meaning no later than the end of the next business day after work stops.

Keep the records after you file

Termination does not end the recordkeeping. Inspection reports are kept at least three years (Part 4.7.4), and so is the corrective action log (Part 5.4.4).

How Washington differs from the federal baseline

States with no NPDES authorisation of their own run on the EPA 2022 Construction General Permit, whose "qualified person" definition is a knowledge and skill threshold that the operator's own staff can meet — it names no licence. Washington's own permit adds no licence, exam or credential above that baseline, so there is nothing further to satisfy here.

Federal baseline: EPA 2022 CGP (no state NPDES authorisation), Appendix A definitions.

What SwpppDraft does for this document

What it does not do

Washington NOT questions

When can a Washington construction site file its Notice of Termination?
Washington accepts a SWPPP prepared by the operator — no professional licence is required to write it. The clause we verified for Washington is about who may prepare the SWPPP, not about who files the termination notice. Washington's termination conditions and its form were not scanned, so read them off the permit itself — the link is at the foot of this page.
What happens if I file the Notice of Termination too early?
Coverage ends on filing. If the site still discharges after that — because stabilization was not actually complete — those discharges are outside the permit. Waiting costs nothing; filing early can cost a great deal.
How long do I keep the paperwork after termination?
Inspection reports for at least three years (Part 4.7.4) and the corrective action log for at least three years (Part 5.4.4). Keep the plan itself with them.
Which clause decides whether the ground is ready?
The stabilization clause, Part 2.2.14 and its Table 2. It requires stabilization to be initiated immediately in any area where construction has permanently ceased or will be inactive for 14 or more calendar days — "immediately" meaning no later than the end of the next business day after work stops. Termination is judged against the finished state of that work.
Does the plan need a last update before I file?
If anything on site changed and the plan does not say so, yes — Part 7.4.1 gives seven days from the change, and the modification is recorded with its date and who authorised it (Part 7.4.2–7.4.3). Filing a termination against a plan that no longer describes the site is the wrong order to do it in.
What is the NOT to the SWPPP?
The end of the relationship. The plan governs the site while coverage lasts and holds the coverage paperwork (Part 7.2.11); the termination notice closes that coverage. The record-keeping clocks — three years on inspection reports (Part 4.7.4) and on the corrective action log (Part 5.4.4) — keep running afterwards.

Build a SWPPP for a site in Washington
The questionnaire and the generator run in your browser and produce a watermarked draft. Checkout is not open, so nothing can be charged.

The rest of the paperwork in Washington

Related questions

Source and verification

Ecology CSWGP (2026-01-01 – 2030-12-31), S9 versus S4.B. Read the source document. State-law information on this page was verified on 2026-08-03; the federal clauses come from the EPA 2022 Construction General Permit (as modified), read 2026-08-04. County and city rules are not covered, and neither this state's filing route nor its deadlines were scanned.

What we are, and what stays your responsibility

  1. SwpppDraft is a document generation tool. It does not provide engineering services, legal services, or compliance consulting, and no engineer or attorney reviews what it produces.
  2. Everything in the document is built from the site facts you enter. Checking that those facts are right, and that the resulting plan fits your project, is yours to do.
  3. We do not file anything on your behalf, we do not certify or endorse your compliance, and we accept no liability for what happens when you use the document.
  4. State-level requirements carry the date we verified them. County and city rules are not covered — some local jurisdictions require a licensed preparer even where the state does not, and you have to check that yourself.
  5. When the product opens, our total liability will be capped at the amount you paid us. Today that amount is zero, because nothing is for sale.