Task force approves up to $15,000 for pond elevation/bathymetric survey as dredging planning next step

The task force’s dredging subgroup reported a range of dredge-volume estimates and asked the full group how to proceed with more accurate site data.

Dredging members said earlier calculations put the potential volume in the range of 35,000 cubic yards in one estimate and approximately 49,500 cubic yards for field staging next to the Bruce Freeman Rail Trail and Route 2. The subgroup also discussed options for reusing topsoil: a nearby development (2229 Main) may accept topsoil and reduce off‑haul costs.

Task force members emphasized that existing dredging plans rely on inconsistent survey elevations and that an accurate, on-the-water bathymetric and elevation survey tied to EA’s 30% design elevations is a gating requirement for revised bids. After debate about scope and cost, the group moved and approved an expenditure "up to $15,000" to conduct an elevation/bathymetric survey of the pond to resolve elevation discrepancies and refine dredging plans.

Quote from the meeting (motion): "I move that we approve up to $15,000 expenditure to ascertain the depths," a task force member said; members then recorded ayes and carried the authorization for the survey.

Why it matters: Accurate depths and elevations are essential for preparing a credible dredging bid, estimating haul and staging needs, assessing permitting risk, and understanding ecological impacts. The survey will enable targeted decisions about how much material to remove and whether on-site staging or reuse is feasible.

Next steps: Staff will solicit quotes for the survey, return cost specifics to the task force if bids exceed the authorization cap, and the dredging subgroup will incorporate the new bathymetry into revised dredging alternatives and cost estimates.