The Town of Concord Waterfront Task Force voted to authorize the dredging workgroup to obtain an additional cost estimate covering multiple dredge quantities, after extensive discussion about disposal sites, material testing and uncertain cost ranges.

At the meeting the dredging workgroup described three alternatives with estimated preliminary costs ranging from roughly $5 million to $12 million depending on configuration and disposal assumptions. Members expressed concerns about whether Northfield (a proposed staging/disposal area) has adequate capacity, and urged mandatory testing of sediments for PFAS before reuse or agricultural placement.

"If the plan is to deploy that on a field that is later used, we have to have testing for PFAS and compare to applicable standards," a member said, noting Maine and other states have tightened rules for land application of dredged sediments.

Motion and vote: A motion to authorize the dredging group to obtain a second cost estimate for multiple quantities of dredged material was moved and seconded; members recorded 'aye' responses and the motion carried. The motion directs workgroup staff to return with updated estimates and contingency language about contamination testing.

Key technical issues raised:
- Sediment testing and PFAS: Several members said the proposal must add explicit PFAS testing requirements and contingency plans if fields or disposal sites refuse material due to contamination risks.
- Disposal and staging capacity: Members asked for clearer confirmation that proposed disposal sites can accept the indicated volumes and for contingency costs if they cannot.
- Scope and comparison: Members asked the dredging workgroup to consider producing a single recommended alternative or make apples-to-apples cost comparisons to help public comprehension.

Next steps: The dredging workgroup will obtain the additional cost estimate, clarify disposal assumptions and add PFAS testing language, then return revised materials for task force review and public posting.