The doomsday plan includes closing the 10 stations with the lowest ridership. That means closing 20% of its stations, impacting 12% of riders. They include Oakland International Airport, South San Francisco and West Dublin/Pleasanton. "It's a tragedy," said Ed Locker, a BART Rider from Santa Rosa. "Everybody uses BART and has for over 50 years, I think. It would be a real sad thing."