How long do I have to keep SWPPP records?

Inspection reports and the corrective action log are kept for at least three years (Part 4.7.4 and Part 5.4.4), and the plan itself has to be available at the site for as long as the permit covers the work (Part 7.3).

Source: EPA 2022 Construction General Permit (as modified), Part 7.3 and Part 4.7.4Verified

What the plan itself has to hold

Part 7.2.11 makes the SWPPP the folder: a copy of the submitted Notice of Intent and the coverage correspondence, the authorisation letter and the NPDES tracking number, a copy of the permit itself — an electronic copy the stormwater team can reach is acceptable — all inspection reports, the corrective action log, the training records for the team and the inspectors (Part 6.2–6.3), and the dates of every modification with who authorised it (Part 7.4.2–7.4.3).

Availability, not filing

Part 7.3 requires the plan 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. "In the office forty miles away" is the answer that fails.

Questions people ask

Does the three years run from the inspection or from termination?
Read the retention clause in your own permit against your dates. The federal text sets a minimum of three years for inspection reports and for the corrective action log.
Can the records be electronic?
The permit expressly allows an electronic copy of the permit itself that the stormwater team can reach. Apply the same test to the rest: can somebody on site produce it on request?

The states this question turns on

All 50 states, in one table

The documents this affects

Other questions

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Source: EPA 2022 Construction General Permit (as modified), Part 7.3 and Part 4.7.4, read 2026-08-04. County and city rules are not covered.

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