A "peroxide-based acid" spilled, according to the Chicago Fire Department. The department issued a Level 1 Hazmat in response.
The brewery's taproom, located at 1800 W. Fulton on the West Side, will be closed Sunday due to the incident, according to a Goose Island tweet.
An employee told ABC7 that "the beer will be fine."
Heads up- Due to unforeseen circumstances, the Taproom at 1800 W Fulton will be closed today. Apologies for the inconvenience. We love you.— Goose Island Beer Co (@GooseIsland) September 24, 2017