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.
Des Plaines enforces erosion and sediment control through the MWRD Watershed Management Ordinance and adopted City standards. Sites disturbing 1/2 acre or more of land must implement best management practices including silt fence, inlet protection, stabilized construction entrances, sediment basins where appropriate, and prompt stabilization of disturbed areas. Sites disturbing 1 acre or more (or smaller sites that are part of a larger common plan of development) must obtain Illinois EPA NPDES coverage under General Permit ILR10 by submitting a Notice of Intent and developing a Stormwater Pollution Prevention Plan (SWPPP). The SWPPP must identify potential pollution sources, control measures, inspection schedules, and corrective actions. Des Plaines Engineering reviews erosion control plans as part of the building permit process for qualifying projects. Discharge of sediment to streets, storm sewers, or waterways is prohibited. Trackout from construction sites onto public streets must be promptly cleaned. Even small residential projects should manage soil stockpiles and stabilize disturbed areas.
Failure to install or maintain erosion controls may result in stop-work orders and fines from Des Plaines Engineering at (847) 391-5390 starting at $100 per day. Illinois EPA NPDES violations carry separate civil penalties up to $10,000 per day per violation.
Des Plaines, IL
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Side-by-side rule comparisons with other cities in Cook County.
See how other cities in Cook County handle erosion control.
See how Des Plaines's erosion control rules stack up against other locations.
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