Department of Environmental Conservation officials are monitoring a 3,468-gallon spill of unleaded gasoline at the Peter Pan Seafoods plant at False Pass.
The DEC says in a situation report that the plant manager discovered the spill Sunday afternoon and reported it Monday morning.
The gas was lost from a tank that holds 30,610 gallons, and DEC officials say it probably leaked from the bottom. The gas in the tank was estimated at 12,325 gallons at the end of January.
The DEC says spilled gas went into a lined containment area.
Peter Pan response workers as of Sunday had transferred 2,100 gallons of gas from the tank into barrels and had another 100 barrels available.
False Pass is on Unimak Island off the Alaska Peninsula about 646 miles southwest of Anchorage.