Environmental Rules in Mount Vernon, NY (2026)
4 verified environmental rules for Mount Vernon, New York, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Mount Vernon is an MS4 community regulated under NYS DEC SPDES GP-0-15-003. City Stormwater Management Program restricts illicit discharges to storm sewers. Only rainwater may enter catch basins.
environmental/stormwater
Heavy RestrictionsNY SPDES General Permits — MSGP, MS4 GP, CGP (Stormwater Phase II)
The USEPA and New York State Department of Environmental Conservation (NYSDEC) are increasing their attention in several ways. There are three State Pollutant Discharge Elimination System (SPDES) general permits required for activities associated stormwater discharges. The Multi-Sector General Permit for Stormwater Discharges Associated with Industrial Activities (MSGP) addresses stormwater run...
Erosion Control
Construction sites in Mount Vernon can't disturb more than five acres at once without an approved plan. City Code § 226-8 caps active soil disturbance under the state's Erosion Control Manual, the "Blue Book," part of the stormwater pollution prevention plan every qualifying land-disturbing project must file before the Planning Board or Stormwater Management Officer will review it.
Mount Vernon Erosion and Sediment Control Rules
Some RestrictionsCity of Mount Vernon Code § 226-8
Construction phasing plan describing the intended sequence of construction activities, including clearing and grubbing, excavation and grading, utility and infrastructure installation and any other activity at the site that results in soil disturbance. Consistent with the New York Standards and Specifications for Erosion and Sediment Control (Erosion Control Manual), not more than five acres sh...
Flood Zones
Mount Vernon's zoning code flatly bars new construction in any designated floodplain unless the project first satisfies the city's flood hazard protection requirements. Section 267-14.G ties a building permit for flood-zone property to the flood hazard determinations the Code Enforcement Officer makes under Chapter 102.
Mount Vernon Floodplain Building Restriction
Some RestrictionsCity of Mount Vernon Code § 267-14.G
Floodplains. No structure shall be erected in a designated floodplain without compliance with flood hazard protection requirements.
Boat Dock Permits
Mount Vernon bars new construction within 25 feet of any tidal or freshwater wetland boundary in the city's Chapter 267 zoning code, but carves out piers, docks, marinas, and boat launching, storage, repair or service facilities if the appropriate approving agency signs off on the project first.
Mount Vernon Wetlands Setback for Boat Docks
Some RestrictionsCity of Mount Vernon Code § 267-14.F
Wetlands setbacks. No building or structure shall be erected within 25 feet of the boundary of any tidal or freshwater wetlands, other than piers, docks, marinas or boat launching, storage, repair or service facilities for which approval is granted by the appropriate approving agency.
Looking for Westchester County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Mount Vernon city rules.
Environmental Rules in Westchester County →