Tests have confirmed chemical contaminants in soil and groundwater at Cascade Township's Gerald R. Ford International Airport.
The western Michigan airport released a report Friday that shows elevated levels of PFAS, which stands for per- and polyfluoroalkyl substances.
Airport officials say the levels are below state limits for drinking. They also say the airport will test some nearby residential wells.
PFAS compounds are used in food packaging and many consumer products. They're also found in firefighting foam used by airports and the military.