Concord oversight committee readies for EPA April meeting as holding-basin work is delayed to 2027

Chair Ray Bruttomesso convened the 2229 Main Street Oversight Committee on Feb. 20, 2026, to review site monitoring and to coordinate the town’s response ahead of an EPA public meeting scheduled for April 2 at the Town House Hearing Room. The committee discussed groundwater monitoring results, planned PFAS sampling in the five-year report, and a construction delay that moves a planned holding-basin project into March 2027.

The committee spent substantial time on the May 2024–April 2025 annual groundwater monitoring report. Clerk Pam Rockwell relayed written comments requesting maps that explicitly mark wells with vapor-intrusion action–level detections so the committee can track whether the footprint of vapor-intrusion risk is growing or shrinking. Pam also urged the committee’s engineers to review the PFAS sampling plan that will be implemented as part of the 2026 five-year report. Committee member Doug Gifford asked whether an interceptor well exists between the site and Concord’s water supply similar to the interceptor toward Acton; the record does not include an answer to that question.

Ray reported that EPA project manager Kara Nierenberg told committee members EPA will hold a public meeting on April 2 to discuss site progress. EPA informed the committee that government closures caused a two-month delay in document review and that the holding-basin construction — described by EPA staff as an eight-month operation that cannot continue into winter — is now scheduled to begin so that work will fall in March 2027. EPA said piezometers and sump pumps are already operating, vehicles will be cleaned in the holding-basin footprint, and wash water will be captured and treated in place. EPA also indicated the delay keeps the area available for community tours during summer 2026. The committee discussed how it wants to participate in the April meeting and asked staff to relay questions about the extended schedule, when de minimis work will be completed, when a Site-Wide Ready for Anticipated Use (SWRAU) might be issued, and how much time Concord will have to provide input about grading for Concord’s future use.

During public comment, Concord property owner and site abutter Bob Anderson expressed concern that holding-basin construction could be noisy (including grinding of bedrock and panel work), lead to truck-traffic noise near his home, and contribute to additional traffic if the site is redeveloped for housing. Anderson said he would prefer a quieter reuse, such as a solar-panel installation, rather than housing that would remove tree buffers along Main Street. The committee recorded that contractors have previously controlled dust by limiting work during windy weather and by watering in dry conditions, but that grinding and truck noise may still be noticeable at times.

The committee agreed that the Town should designate a senior staff member to take the lead on organizing the Town’s interactions at the site and on risk communication during the acquisition and cleanup phases. Chair Ray Bruttomesso said he will speak with the Town Manager and with Megan Zammuto and will forward committee questions to the EPA project manager. The committee noted additional meetings for document review and scheduled upcoming meetings on March 6, March 20, April 17 and May 15; EPA’s public meeting remains set for April 2. The meeting adjourned at 11:49 a.m.

Background: A SWRAU (Site-Wide Ready for Anticipated Use) is an EPA document indicating a site has completed remediation sufficient to permit certain types of redevelopment under specified conditions. The committee also referenced the 2229 Main Street Advisory Task Force final report for maps of potential reuse areas and circulation routes.