Washington SWPPP (the plan itself) (2026)
Who can write the SWPPP for a 1–5 acre construction site in Washington?
Washington accepts a SWPPP prepared by the operator — no professional licence is required to write it. This is the document the preparer-qualification clause is about: when Washington's permit says who may prepare the plan, it means this one.
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)…
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 has to be in it
The federal permit lists the contents of a SWPPP in Part 7.2, and the plan SwpppDraft assembles follows that list section by section. None of it is optional because the site is small.
- Who the operators are, and which area of the site each one controls (Part 7.2.1)
- The stormwater team: who implements the controls and who inspects them (Part 7.2.2)
- The nature of the construction activity, its phases and its schedule (Part 7.2.3)
- A site map showing boundaries, drainage, controls, support areas and surface waters (Part 7.2.4)
- The authorised non-stormwater discharges you expect (Part 7.2.5)
- Every control you will use, with its design, maintenance and installation schedule (Part 7.2.6)
- The inspection and corrective-action procedures (Part 7.2.7)
- Documentation for the other federal requirements — endangered species, historic properties (Part 7.2.9)
- A signature from the operator's signatory (Part 7.2.10) and the records the plan must hold (Part 7.2.11)
It is a living document, not a filing
Part 7.3 requires the plan to be available at the site, or somewhere close enough to produce on request, for as long as the permit covers the work. Part 7.4.1 requires it to be modified within seven days of a change that affects discharges, or when an inspection shows a control is not working. An unmodified plan that no longer matches the site is the more common finding, not a plan with a mistake in it.
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
- Turn your answers into the full Part 7.2 structure, with the clause number printed under each section heading
- Write your state's preparer-qualification clause into the plan with its citation and the date we read it
- Output a .docx you can edit, because the site will change and the plan has to change with it
What it does not do
- Size a sediment basin, run hydrology, or design a permanent stormwater practice
- Review, endorse or take responsibility for the plan you produce
- Cover county or city rules — the scan behind this site answered the state-level question only
Washington SWPPP questions
- Who can write the SWPPP for a 1–5 acre construction site in Washington?
- Washington accepts a SWPPP prepared by the operator — no professional licence is required to write it. This is the document the preparer-qualification clause is about: when Washington's permit says who may prepare the plan, it means this one.
- Is a SWPPP the same thing as an erosion control plan?
- Often, but not always, and the name changes by state. The document our generator produces follows the federal Part 7.2 contents list and carries your state's own clause. Check the name your permit uses before you submit anything — several states run a separate, additional plan under their own erosion-control law.
- Do I need a SWPPP for a site under one acre?
- Below one disturbed acre, federal construction general permit coverage is usually not required at all unless the site is part of a larger common plan of development. Check whether you need a SWPPP before you pay for one.
- Which part of the federal permit sets what goes in the plan?
- Part 7.2, clause by clause: the operators and the area each controls (Part 7.2.1), the stormwater team (Part 7.2.2), the activity and its phasing (Part 7.2.3), the site map (Part 7.2.4), authorised non-stormwater discharges (Part 7.2.5), the controls (Part 7.2.6), the inspection procedure (Part 7.2.7), the other federal requirements (Part 7.2.9), the signature (Part 7.2.10) and the records the plan holds (Part 7.2.11).
- Does the SWPPP get submitted, or kept on site?
- Kept, in the general case. Part 7.3 requires it to be available at the site — or at a nearby location where it can be produced on request — for as long as the permit covers the work. The Notice of Intent is the thing that gets filed, and Part 7.2.11 then requires a copy of it to live inside the plan.
- When does the plan have to be changed?
- Within seven days of a change in design, construction, operation or maintenance that affects discharges, or when an inspection or corrective action shows a control is not working (Part 7.4.1). The date of each modification and who authorised it are recorded with it (Part 7.4.2–7.4.3). That is why the file we produce is an editable .docx.
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
- Washington SWPPP requirements — who may prepare the plan, and the clause that decides it
- Washington Notice of Intent (NOI)
- Washington Notice of Termination (NOT)
- Washington inspection log and inspection requirements
- Washington BMP selection and site map
Related questions
- Who can prepare a SWPPP?
- Why does my state call it something other than a SWPPP?
- Do I need a SWPPP?
- What does a SWPPP template actually give you?
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
- 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.
- 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.
- 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.
- 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.
- 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.