The Thames River is getting a clean bill of health following an ethanol fire in Chatham earlier this year.Back on September 16, 2026, a fire broke out at Greenfield Global's site on Bloomfield Road.The company confirmed that firefighting foam used to fight the blaze accidentally entered the Thames River. According to a University of Guelph study, certain foam can be extremely harmful and toxic to aquatic life.Concerns were raised once several de…