State officials are investigating how many chemicals leaked from storage tanks at a facility flooded by Hurricane Isaac with about 10 feet of water.
Isaac's surge damaged the Stolthaven Braithwaite LLC chemical storage and transfer facility next to the Mississippi River in Braithwaite, a Plaquemines Parish community protected by levees overtopped by floodwaters.
The facility is owned by Stolt-Nielsen Ltd., a Norwegian company that ships bulk liquid chemicals, vegetable oils and other chemicals around the world.
Rodney Mallett, a spokesman with the Louisiana Department of Environmental Quality, said crews were working to clean up the facility Thursday, more than two weeks after Isaac struck Louisiana.
Officials are uncertain how many chemicals were released.
But Mallett said air and water testing has found no contamination outside of the facility's grounds.