A requirement of ODOT’s Phase I and II storm water permits require the development and implementation of a Storm Water Management Plan (SWMP). A component of ODOT’s SWMP is the Illicit Discharge Detection and Elimination (IIDE) program. The purpose of ODOT’s IDDE Program is to identify and eliminate any discharge to a Municipal Separate Storm Sewer System (MS4). ODOT employees are the eyes of the program and we are relying on you to help us protect our rivers, streams, creeks and lakes.

• Estimate the amount of discharge
• Characteristics of the discharge like color or odor
• Information on the vehicle or business dumping waste (if applicable)
• Safety First! Keep your distance. Illicit discharges can be dangerous.

IDDE Program Field Screening and Investigation Manual