The foam firefighters used to put out the fires Friday at substations for utility companies is not believed to have contained a group of chemicals compounds commonly known as PFAS.
Assistant Chief of Support Services Michael Popovich said firefighters used a foam called FireAid 2000 and consulted the manufacturer, which said the foam is not linked to perfluoroalkyl and polyfluoroalkyl substances.
PFAS are a group of man-made chemicals that have properties that allow them to repel water and oil. They are commonly found in food packaging, public water systems, drinking wells and firefighting foam.
There is evidence that exposure to PFAS can lead to adverse health outcomes in humans and animals, according to the Environmental Protection Agency.