NYState-AdministeredSWPPP Requirements in New York
New York administers its own NPDES program through NYSDEC under the SPDES program. Construction sites disturbing 1+ acre must obtain coverage under GP-0-25-001 (reissued January 29, 2025, replacing GP-0-20-001). The permit requires a SWPPP prepared by a qualified preparer and inspections by a trained inspector. NYC Watershed areas carry additional overlay requirements to protect drinking water supplies. Operators transitioning from the 2020 permit should follow NYSDEC guidance on continued coverage and updated design manual requirements.
New York SWPPP Key Facts
- ✓NOI filed through NYSDEC ePortal; $0 filing fee
- ✓SWPPP preparer must complete 4-hour NYSDEC-approved training
- ✓Inspector must complete 4-hour NYSDEC Qualified Inspector training
- ✓NYC Watershed overlays (West/East of Hudson) impose enhanced BMP requirements
- ✓Permit GP-0-25-001 effective January 29, 2025 (replaced GP-0-20-001)
Administering Agency
- Agency
- New York State Department of Environmental Conservation (NYSDEC)
- Phone
- 518-402-8111
- spdes@dec.ny.gov
- Website
- NYSDEC Stormwater Program
Permit Details
- Permit Name
- SPDES General Permit for Stormwater Discharges from Construction Activity
- Permit Number
- GP-0-25-001
- Effective Date
- 2025-01-29
- Expiration Date
- 2030-01-28
- Permit Document
- View Current Permit
SWPPP Thresholds & Triggers
- Acreage Threshold
- 1 acre or more; less than 1 acre if part of a larger common plan of development
NYC Watershed overlay zones (West of Hudson, East of Hudson) impose enhanced requirements including additional BMPs and stricter review.
Inspection Requirements
- Inspection Frequency
- At least every 7 days and within 24 hours of a 0.5-inch or greater rain event
- Rain Event Threshold
- 0.5 inches within 24 hours
- Certified Inspector
- Required by state
- Accepted Certifications
- NYSDEC 4-Hour Qualified Inspector Training, CPESC, PE or LA licensed in NY
SWPPP must be prepared by a Qualified SWPPP Preparer (QSP) who completes 4-hour NYSDEC training. Inspector and preparer may be the same individual.
Penalties & Enforcement
- Max Civil Penalty (Per Day)
- $37,500 per day per violation
- Criminal Penalties
- Up to $75,000/day and imprisonment for knowing violations
NYSDEC conducts active field inspections; non-compliance can result in stop-work orders and permit revocation.
Permit Fees
- NOI Filing Fee
- $0
- Annual Fee
- Varies; compliance program costs typically $1,000–$5,000/year
- NOT Filing Fee
- $0
- Other Fees
- ePortal registration required; no direct filing fee
How New York Differs from Federal Requirements
- ⚠NY has its own SPDES program; EPA CGP does not apply
- ⚠Preparer training requirement (4-hour) is NY-specific and stricter than federal CGP
- ⚠NYC Watershed overlay protections exceed federal minimums
- ⚠No NOI fee under NY, whereas some federal CGP states charge fees
SWPPP Tips for New York
- ➤File NOI at least 3 days before earth disturbance begins to allow NYSDEC processing
- ➤Maintain inspection logs and SWPPP amendments on-site at all times
- ➤Check NYSDEC mapping tools for NYC Watershed overlay applicability before project start
New York SWPPP FAQs
Does New York require a separate NOI for projects in NYC Watershed areas?+
No separate NOI, but the SWPPP must include enhanced measures for West of Hudson or East of Hudson watershed zones and may require additional DEP review.
Who qualifies as a SWPPP preparer in New York?+
Any individual who has completed the NYSDEC 4-hour SWPPP Preparer training, or a licensed PE, LA, or geologist in NY with relevant experience.
Is an NOT required when construction is complete?+
Yes. A Notice of Termination must be submitted through the ePortal once final stabilization is achieved.
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