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Airport reports PFOS monitoring update; consultants propose treat‑and‑return option for geothermal wells
Summary
PFOS status report No.18 submitted early to MassDEP; consultants found a spike at the Sandpits stockpile and recommend additional soil accounting and potential treatment of geothermal loop water to avoid spreading contamination.
Town and airport environmental staff briefed the commission on PFAS/PFOS work at the airport and nearby sites, including recent sampling, investigation and planned technical steps. The airport received and completed Immediate Response Action (IRA) status report No. 18 on Aug. 24, 2025, which will be submitted to the Massachusetts Department of Environmental Protection (MassDEP) by the Oct. 1 reporting deadline.
Environmental coordinator Madison Collins said a notable finding in the latest sampling was a new detection at the Sandpits stockpile — from non‑detect to 942…
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