Erosion Control: Mount Vernon vs White Plains
How do erosion control rules compare between Mount Vernon, NY and White Plains, NY?
Mount Vernon and White Plains have similar restriction levels.
Mount Vernon, NY
Westchester County
Soil erosion and sediment control required on land-disturbing activities per NYS DEC SPDES general permit (GP-0-20-001) for 1+ acre sites. City enforces stormwater/erosion standards at building permit review.
View full Mount Vernon rules →White Plains, NY
Westchester County
Erosion and sediment control plans required for any soil disturbance over 5,000 sq ft or within 100 ft of a watercourse, per WP stormwater chapter. Plans must follow NYS DEC Standards and Specifications for Erosion and Sediment Control (the Blue Book).
View full White Plains rules →Key Facts Comparison
| Fact | Mount Vernon | White Plains |
|---|---|---|
| Threshold | 1 acre triggers SPDES | 5,000 sq ft disturbance |
| SWPPP | Required 1+ acre | Required at 1 acre (state) |
| Standard | NY Blue Book 2016 | NYS DEC Blue Book |
| Review | Building Department | - |
| Reviewer | - | Building Dept / DPW |
Highlighted rows indicate differences between cities.
Mount Vernon FAQ
Do I need erosion controls for a small addition?
Typically silt fence and inlet protection are required even for small projects at plan review.
When does a full SWPPP become mandatory?
At 1 or more acres of disturbance — a SWPPP and Notice of Intent to NYS DEC are required under the SPDES permit.
What standard does Mount Vernon use for erosion controls?
The NY Standards and Specifications for Erosion and Sediment Control (2016 Blue Book), enforced at Building Department review.
White Plains FAQ
Do I need erosion controls for a small home addition?
For small projects under 5,000 sq ft of disturbance, standard silt fencing along downslope edges is usually sufficient; review at building permit issuance.
When is a SWPPP required in White Plains?
A Stormwater Pollution Prevention Plan (SWPPP) is required under the NYS SPDES General Permit when soil disturbance reaches 1 acre or more.
What erosion control standards apply in White Plains?
White Plains follows the NYS DEC Standards and Specifications for Erosion and Sediment Control (the 'Blue Book'), reviewed by the Building Department and DPW Engineering.
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