Is There a Discharge of Stormwater Runoff to Surface Waters of the State?
“Stormwater runoff” consists of rain, snow or any other form of precipitation that falls on the facility and runs (flows) off the property. Stormwater that does not discharge off the site of a regulated industrial activity or which does not follow a definable path to a surface water body will not need a permit. “Surface waters of the state” include lakes, rivers and streams, county drains, road side ditches and all other water courses and waters within the confines of the state and also the Great Lakes bordering the state. Discharges through a separate storm sewer system are also considered to be discharges to waters of the state.
