County Details PFAS Cleanup at Former Fire‑Training Site; Plans Full‑Scale Reactive Barrier

Barnstable County officials and consultant GZA briefed the Assembly of Delegates July 2 on long‑running PFAS contamination at the former municipal fire‑training facility in Hyannis and described near‑term cleanup steps, a schedule and funding context.

Paul Rosala, the county’s assets and infrastructure manager, said the county owns the roughly five‑acre site where aqueous film‑forming foam (AFFF) was used during training over several decades and that PFAS from those exercises contaminated soils and groundwater and has impacted municipal drinking wells down gradient. Rosala said the county does not have records of the foam volumes used because the site was used by multiple local fire departments and the county “did not provide foam.”

GZA Principal John Paquin said the county and consultants have compiled decades of historical data, installed 16 additional…