An Informative Introduction

Construction / Post-Construction

New York State Department of Environmental Conservation (NYSDEC) requires projects disturbing an acre or more of soil to obtain coverage for stormwater discharges under the State Pollution Discharge Elimination System (SPDES) General Permit for Stormwater Discharges from Construction Activity (GP-0-15-002)(NYSDEC CGP).

Affected Projects

The Construction / Post-Construction Program applies only to certain new and redevelopment projects, referred to as covered development projects. Covered development project means development activity, private or public, that involves or results in a soil disturbance within the MS4 area in an amount greater than or equal to one acre.

MS4 Construction / Post-Construction Public Data

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Active Construction Permits

This is a list of active MS4 Stormwater Construction Permits.

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Active Maintenance Permits

This is a list of active MS4 Stormwater Maintenance Permits.

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Post Construction SMPs

Existing Post Construction SMPs Constructed under the NYSDEC General Permits.