Monday evening around 17:30 Sta 26 was dispatched to the area of 6379 Eldorado-Federalsburg Rd for a tractor trailer overturned. Chief 26 arrived on location with one tractor trailer on its side off the road way. Truck was carrying a load of potatoes. Driver was uninjured and self extricated. He refused treatment at the scene. Hazmat 1 (Cambridge Sta 1) responded for fuel pump off before the truck was uprighted. Units cleared 18:36.