Checked October 20, 2026 against the permit text published by NYS Department of Environmental Conservation. Sources and sections are listed at the end of this page.
In New York, construction stormwater coverage comes from SPDES General Permit for Stormwater Discharges from Construction Activity (permit no. GP-0-25-001), issued by NYS Department of Environmental Conservation (NYSDEC). It took effect January 29, 2025 and expires January 28, 2030.
Where we can help. E&SC-only SWPPPs (no post-construction practices; Appendix B Table 1 project types) outside New York City. You provide the Qualified Inspector (Part IV.C).
At a glance
| Item | What the permit says |
|---|---|
| How coverage is obtained | eNOI in DEC nForm with SWPPP Preparer Certification, Owner/Operator Certification, and MS4 SWPPP Acceptance or No Jurisdiction form |
| Agency fee | SPDES fee table (initial + annual); amounts on the agency fee table |
| Who may prepare the plan | SWPPPs that need the post-construction (SMP) component must be prepared by a Qualified Professional (Part III.A.4; App. A definition: PE, RLA or DEC-endorsed); engineering components by or under a NY PE. E&SC-only SWPPPs (Appendix B Table 1 projects) have no preparer credential rule |
| Who inspects | Qualified Inspector (App. A: PE, CPESC, RLA, NYS Erosion and Sediment Control Certificate holder, or trained staff under a PE/RLA) (Part IV.C) |
| Inspection frequency | At least once every 7 calendar days; twice every 7 days (2 full days apart) for 5+ ac disturbed at once or Appendix C/D waters; every 30 days during winter shutdown (Part IV.C.2) |
| State forms and templates | None mandatory |
Points that are easy to miss
- MS4 SWPPP Acceptance Form before eNOI.
- Lower thresholds: 5,000 sf East of Hudson, 20,000 sf in NYC.
- SHPA cultural screening before eNOI.
What a SWPPP Desk plan covers here
We prepare a site-specific plan written to GP-0-25-001, with each section mapped to the permit part it answers. You, the operator, review and sign it and keep it on site.
Checkout open, with limits in New York. State ruling: Sell, limit: E&SC-only plans outside NYC. The site check on the plan page applies these conditions before payment. See coverage.
Before checkout you confirm:
- The site is outside New York City.
- The plan needs no post-construction stormwater practices (erosion and sediment control only).
- You will supply the Qualified Inspector.
What we do not do
- Our plans are not sealed or stamped. BMPs that need design calculations, such as sediment basins and post-construction practices, come from your design professional.
- The operator signs the plan and is responsible for it.
- We do not visit or inspect sites.
- We do not file the NOI or any permit application for you. We tell you which form and portal the permit names.
Sources
- Permit text: dec.ny.gov (Part III.A.4 (Qualified Professional), Part IV.C (Qualified Inspector, frequency), Appendix A (definitions), Appendix B Table 1). Checked 2026-10-20.
- Agency page: dec.ny.gov. Checked 2026-10-20.
SWPPP Desk is not affiliated with NYS Department of Environmental Conservation. If a rule here has changed, write to [email protected] and we will correct this page.