Greenwave II -- named after Summerville High School's mascot, the Green Wave -- is a BP gas station located on Highway 17 close to The Ponds and the Dorchester merge. Fill up your tank at one of its eight pumps where you decide on the grade of fuel: regular, silver or ultimate. The pumps provide diesel fuel as well.
The handy convenience store is stocked with speedy needs and treats such as local newspapers, Charleston Chews, and an array of pop and beer. Or just take a chance with the state lottery. A restroom is located inside.