When does exposed soil have to be stabilized?
Stabilization must be initiated immediately in any area of exposed soil where construction has permanently ceased or will be temporarily inactive for 14 or more calendar days, and "immediately" means no later than the end of the next business day after work stops.
Two triggers, one deadline to start
The clause fires on permanent cessation and on 14 days of inactivity alike. The deadline is to *initiate* stabilization, not to complete it, and it is measured in business days from when work stopped — which is why the dates belong in the inspection records.
Why it matters for termination
Final stabilization is normally the condition that lets a site file its Notice of Termination. Getting the deadline wrong early tends to show up late, as a site that cannot be terminated when the crew has already left.
Questions people ask
- Does the 14 days include weekends?
- The clause counts 14 calendar days of inactivity; the "immediately" that follows is measured in business days. Read the table itself for your site.
- What counts as stabilization?
- Read your own permit and your state's erosion-control manual — the methods and the acceptance criteria are exactly the kind of thing a generated page should not invent.
The states this question turns on
- Texas SWPPP requirements — Texas requires the SWP3 to be developed and implemented by the primary operator; the permit contains no PE, CPESC or licensing language for preparation.
- Arizona SWPPP requirements — Arizona requires a "qualified person", defined to include the operator's own employees as well as outside personnel.
- Washington SWPPP requirements — Washington requires the permittee to prepare the SWPPP; the Certified Erosion and Sediment Control Lead requirement applies to site inspections.
The documents this affects
Other questions
- Who can prepare a SWPPP?
- Which states require a licensed professional to prepare a SWPPP?
- Which states make you take a course before writing a SWPPP?
- Does my site need a licensed professional even though my state allows self-preparation?
- What acreage thresholds change SWPPP requirements?
Check your state and build a draft
The questionnaire and the generator run in your browser. Checkout is not open, so nothing can be charged.
Source: EPA 2022 Construction General Permit (as modified), Part 2.2.14, Table 2, read 2026-08-04. County and city rules are not covered.
What we are, and what stays your responsibility
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- 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.
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