Erosion Control: Des Plaines vs Skokie
How do erosion control rules compare between Des Plaines, IL and Skokie, IL?
Des Plaines and Skokie have similar restriction levels.
Des Plaines, IL
Cook County
Construction sites in Des Plaines disturbing 1/2 acre or more must implement erosion and sediment control measures under the MWRD Watershed Management Ordinance. Sites disturbing 1 acre or more must obtain Illinois EPA NPDES coverage under General Permit ILR10 with a Stormwater Pollution Prevention Plan.
View full Des Plaines rules →Skokie, IL
Cook County
Erosion and sediment control on Skokie construction sites is governed by the Cook County Watershed Management Ordinance and the Illinois Environmental Protection Agency's construction general permit for sites disturbing 1 acre or more. Skokie Public Works enforces local grading and erosion rules for smaller sites and requires silt fencing and inlet protection on active construction.
View full Skokie rules →Key Facts Comparison
| Fact | Des Plaines | Skokie |
|---|---|---|
| BMP Threshold | 1/2 acre | - |
| NPDES Threshold | 1 acre | - |
| Permit | IL EPA ILR10 | - |
| SWPPP | Required >1 acre | - |
| Trackout | Must be cleaned | - |
| IEPA Permit | - | 1+ acre disturbance |
| Silt Fencing | - | Required |
| Inlet Protection | - | Required |
| Stabilization | - | Within 14 days typical |
| Tracking | - | Must be cleaned promptly |
Highlighted rows indicate differences between cities.
Des Plaines FAQ
Do I need erosion control for a home addition?
Smaller projects below 1/2 acre disturbance still must manage soil and prevent sediment from leaving the site. Larger projects must implement formal erosion control plans approved by City Engineering.
When do I need an Illinois EPA permit?
Construction projects disturbing 1 acre or more of land must obtain NPDES coverage under General Permit ILR10 and prepare a Stormwater Pollution Prevention Plan.
What about sediment tracked onto the street?
Trackout from construction sites onto public streets is prohibited and must be cleaned promptly. Stabilized construction entrances are required to minimize trackout.
Skokie FAQ
Do I need erosion control for a residential project?
Yes if you are disturbing meaningful amounts of soil. Silt fencing, inlet protection, and prompt stabilization are standard expectations. Larger projects (1+ acre) require an IEPA NPDES permit.
Who inspects erosion controls?
Skokie Public Works and Community Development inspectors during construction. For IEPA-permitted sites, EPA compliance staff may also inspect. Neighbors may report violations.
What about sediment on the street?
Sediment tracked onto streets or deposited in storm inlets must be cleaned promptly. Failure to clean can trigger code enforcement and cleanup costs charged to the responsible party.
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