They delivered updates on well testing in an area touched by the PFOS contamination believed to be a result of firefighting foam used at the Stewart Air National Guard base and airport. (wamc.org)
Although phased out in 2002, PFOS has been a key ingredient in the types of firefighting foam used at the base for emergency response and training exercises. (nystateofpolitics.com)
The chemical is used in firefighting foam, particularly the type used at airports. (politico.com)