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Investigators map multiple PFAS plumes; phase‑2 assessment and risk studies planned for former fire‑training site

Barnstable County · March 11, 2026
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Summary

GZA told the public it compiled an extensive environmental database, identified multiple PFAS plumes including commingling with airport‑related releases, completed targeted December 2025 sampling (27 wells), and will proceed with a phase‑2 comprehensive site assessment followed by a phase‑3 remedial action plan and continued monitoring.

Consultants for Barnstable County said their investigation at the former Municipal Fire Training Site has identified multiple PFAS plumes in shallow and deeper aquifers, including off‑site plumes that appear to commingle with the site’s plume and others associated with nearby airport operations.

John Paquin, vice president at GZA, said the team compiled an environmental database containing over 42,000 analytical results from roughly 1,800 samples (data spanning…

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