The 393 starts running at 6:34 am and goes until 8:34 pm. They leave the bart station at 34 after the hour and you can expect the bus to return you to the BART station at 36 after the hour. The ride is approximately 25 minutes.
The 392 is another bus that will drop you at the college. It leaves the BART station at 46 after the hour and will pick you up from the college at 48 after the hour. This ride is about 25 minutes!