Compare Regulations
Compare state baseline against local requirements in a single view
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Compare state baseline against local requirements in a single view
Rows with an amber indicator differ across selections.
| Field | State New York NYSDEC | Local Suffolk County Suffolk County Department of Public Works / Individual town building departments |
|---|---|---|
| Permit | ||
| Permit / Authorization | SPDES General Permit for Stormwater Discharges from Construction Activity (GP-0-25-001) | Suffolk County DPW Drainage Review / Town-level Building Permit |
| Submit To | NYSDEC | Suffolk County Department of Public Works / Individual town building departments |
| Lead Time | Electronic NOI (eNOI) required; NYSDEC issues a Letter of Authorization (LOA) specifying the authorized construction start date | County drainage review 4–8 weeks; town permits concurrent |
| Application Method | Online via NYSDEC's eDEC system — electronic eNOI submission now mandatory (paper no longer accepted) | County drainage plans submitted to Suffolk County DPW; building permits via individual town |
| Fee | $2,250 flat fee for most projects (one of the higher fees nationally) | County review fees vary; town permit fees per project scope |
| Water Quality | ||
| Impervious Cover Limit | No statewide limit | No countywide cap; post-construction management per NYSDEC MS4 permit; Suffolk County Sanitary Code Article 7 governs on-site stormwater disposal |
| On-Site Treatment Required | Not specified at state level | Yes |
| Detention Required | Not specified at state level | Yes — Manage the first 1 inch of rainfall on-site per NYS Design Manual; drywells and leaching pools historically primary BMPs; enhanced nitrogen-reducing systems now required in some areas |
| Turbidity / Discharge Standard | Not specified as a numeric standard; discharges must not cause or contribute to violations of water quality standards. Turbidity benchmarks apply for sites near 303(d)-listed waters. | Must comply with NYSDEC SPDES CGP; Peconic Estuary, Long Island Sound, and Great South Bay protections apply |
| SWPPP | ||
| SWPPP / Local Plan Required | Yes | Yes — SWPPP per NYSDEC; drainage plan per Suffolk County DPW / Suffolk County Department of Health Services for groundwater discharge |
| PE Stamp Required | Yes | Yes |
| Inspections | ||
| Inspection Requirements | Every 7 days and within 24 hours of a storm event producing ≥ 0.5 inches of rainfall (or ≥ 0.25 inches if site is near a 303(d) listed water body) | Town inspections at permit milestones. County DPW and Health Department may inspect stormwater facilities. Post-construction maintenance required. |
| Inspector Qualification | Trained Contractor (TC) for routine inspections; Qualified Inspector (QI) for sites ≥ 5 acres or near sensitive water bodies. QI certification required through NYSDEC-approved training. | NYSDEC-approved QI/TC per SPDES CGP; no additional county certification |
| Design & Zones | ||
| Local Design Manual | N/A — state level | NYS Stormwater Management Design Manual / Suffolk County Standards and Specifications for Drainage |
| Special Overlay Zones | N/A — see local jurisdictions | Sole Source Aquifer / Special Groundwater Protection Areas (SGPAs), Peconic Estuary / Pine Barrens, South Shore Estuary / Great South Bay |