Fermilab officials said no one was hurt after a leak in a sulfuric acid tank at the facility in Batavia Monday afternoon.
An employee first noticed a "pinhole-sized leak" in a 400-gallon tank filled with sulfuric acid at about 2:30 p.m., according to a news release. The acid is used for water treatment and is a corrosive substance, the release said.
Hazardous-material personnel from Fermilab's fire department were able to contain the acid and stop the leak by about 6 p.m., officials said; the leak didn't affect the environment and posed no risk to neighbors.
Batavia fire officials confirmed they were monitoring the situation and that no one was injured.
A contractor that specializes in cleaning up hazardous materials is working to remove the remaining acid and clean the area around the leak, according to the release.