Hazmat crews worked early Monday trying to contain a diesel spill into San Diego Bay.
A valve failed at a refueling station on the north side of Harbor Island, right at the entrance to a marina, spilling 50 gallons of fuel.
Boat owner Lee Perry smelled the spill around 1:30 a.m. Monday and called authorities.
A nozzle in a bucket was spilling over into the water according to Perry.
A worker said the fuel dock was closed at the time.
Diesel could be seen drifting east towards the boat docks.
A strong diesel smell was noticeable at the far west end of Harbor Island near Tom' Hams lighthouse.
San Diego Fire and Rescue sent its hazmat team to try and stop the spread.
The U.S. Coast Guard also had some crews with booms and skimming gear to help out.
The USCG said the sun will help evaporate the fuel.