James K. Polk Building, Suite 300
505 Deaderick Street
Nashville, Tennessee 37243-0333
Barry C. Brown, Director
TDOT’s Municipal Separate Storm Sewer System permit (MS4) (PDF) issued by TDEC became effective on October 1, 2006. It authorizes TDOT to discharge from point sources to Waters of the State storm water and allowable non-storm water from all portions of our MS4 within the State of Tennessee, which includes but is not limited to interstate highways, divided highways, multiple lane roads, primary roads and our owned/operated facilities.