Flint Road Landfill PFAS Remediation

At a glance

• What: long-running remediation of PFAS contamination associated with the Flint Road landfill in Charlton. CMG Environmental (contractor lead: Gary) manages the work; the Board of Health receives regular status updates.
• Where it stands: as of September 15, 2026, capping timeline extended to ~18 months (fill supply); new detection at 114 Dresser Hill Rd.
• Next: the July minutes' source-attribution passage is disputed and may need correction.

Scope of the work

• Quarterly residential well sampling.
• Bottled water and point-of-use treatment for affected homes.
• Monitoring well installation/replacement.
• Capping of the landfill itself; progress depends on receiving enough clean fill material.

Status as of July 21, 2026 (Board of Health)

• 61 homes still on quarterly sampling, 43 on bottled water, 5 with treatment/filtration systems.
• 13 consistent non-detects being tracked toward a 2-year reduction window.
• Only ~20% of clean fill needed for capping had been received, with an August meeting scheduled to decide whether capping proceeds in 2026 or is deferred.
• The September 15, 2026 Board of Health meeting likely contained further updates but no transcript was available.

Update September 15, 2026

• Capping timeline extended to ~18 months (fill supply).
• New detection at 114 Dresser Hill Rd.
• The July minutes' source-attribution passage is disputed and may need correction.

Discussion time

About 38 minutes across 2 meetings (from transcript timestamps; approximate).

Log

2026-11-17 — 2026-11-17 - Board of Health Meeting

On the agenda under old business (scheduled).

2026-09-15 — 2026-09-15 - Board of Health Meeting

Contractor finished road work, relocated waste by the poles, lined/filled, and found ledge needing no liner or cap. Suitable fill (CO 97) is hard to source, so the schedule extended from ~1 year to 18 months with a winter pause expected (state OK with it). A new PFAS hit at 114 Dresser Hill Rd (previously non-detect) adds 3 homes to test and 1 bottled-water household. The board questioned a passage in the July minutes saying the landfill is unlikely to be the main PFAS source (15 Old Town Rd wells clean); to be checked. Meeting with Haskell/Magnuson on September 16 at 9:30. Captions are ASR; names garbled.

2026-07-21 — 2026-07-21 - Board of Health Meeting

CMG Environmental's Gary presented a detailed update: 61 homes on quarterly sampling, 43 on bottled water, 5 on treatment systems, 13 consistent non-detects moving toward a 2-year window before sampling could be reduced. New monitoring wells were being installed to replace ones placed in the waste itself. Capping this year contingent on clean fill delivery (only ~20% of needed volume received), with an August meeting to make the go/defer call. Testing at 15 Old Town Road wells came back clean, easing concern about a DPW-related off-site source. Operational items covered included mowing at 90 Flint Road, a resolved dust/dirt complaint, jersey-barrier driveway safety fix, and utility pole relocation with National Grid.