The Environmental Service Department (DES) reported progress on multiple fronts at the study commission meeting on Nov. 14, 2025, saying the state terminated a company air permit and is advancing drinking‑water remedies as additional groundwater exceedances emerged.

Mike, a DES representative, told the commission the company requested termination of its air permit and that the air‑resources division completed its review after emissions‑based fee payments were made. "DES terminated the permit effective 10/20/2025," he said.

He said demolition of the former facility was finished Sept. 24 and that fencing and cameras remain in place. Contractors are testing the remaining concrete pad for PFAS leaching and running simulated rain‑runoff tests according to EPA procedures; DES has asked the company for a final demolition and decommissioning report expected early next year.

DES provided counts on drinking‑water responses: as of Nov. 5, the agency reported 782 point‑of‑entry treatment (POET) systems installed, 716 of which "have been deemed complete by demonstrating complete treatment," Mike said. He added that contractors have installed exterior service lines and meters at multiple properties in Bedford and Merrimack, allowing bottled‑water deliveries to be discontinued for those addresses.

The agency said it has sampled roughly 1,475 properties since January under a groundwater management work plan, and that bimonthly status reports show an additional 163 properties now exceed the ambient groundwater quality standard of 12 parts per trillion. "Those wells get identified and are offered bottled water right away, and then it will be reviewed for a permanent remedy," Mike said.

DES described ongoing efforts to close data gaps in the site's remedial action plan. The company submitted a July 2025 work plan to address deficiencies the department flagged; DES approved the plan with comments in August and said the company is seeking access agreements for adjacent properties before further investigations. DES also told the commission it had asked for a more robust soil‑sampling work plan in a Sept. 8 letter and now expects a revised plan in 2026.

The state also described coordination in specific local projects: Merrimack paving work on John and Edward Lanes is largely complete but Brenda Lane paving was delayed to 2026, and Londonderry is negotiating an agreement with Saint‑Gobain and received an $8,000,000 grant from the Drinking Water and Groundwater Trust Fund advisory commission to support connections.

The commission pressed DES for clarification about the newly identified exceedances. Responding to a question, Mike said the 163 additional properties are located within the consent‑decree area and noted that some previously tested near the standard (9–11 ppt) have yielded higher subsequent results.

Next steps for DES, the agency told the commission, include receiving the demolition/decommissioning report, tracking the soil‑sampling work plan that the company is revising, and continuing well sampling and connection work. The commission scheduled a follow‑up in December.