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Contractor: small silt removal likely after detention-basin inspection at Windham High School
Summary
Downes Construction told the Windham building committee that inspection of the campus detention basin will likely require removal of roughly 1–2 cubic yards of silt (about 10% impacted); crews may use a vac truck or confined-space entry and expect work within two weeks, with a schedule due 6/3/26.
At a June 1 meeting of the Ad-Hoc Windham High School Renovate as New Committee, Downes Construction reported that a detention-basin inspection will likely require removing about 1 to 2 cubic yards of silt, roughly 10% of which is contaminated or “impacted,” and that the contractor will submit a plan and schedule on Wednesday, June 3. M. Carlson of Downes Construction said some removal may be done by vac truck and some by confined-space entry, and that the remaining material is a fine sludge that may not be easily jetted through piping.
The committee asked about ways to avoid physical entry. M. Callahan asked whether the material could be jetted to a vacuum point instead of personnel entering confined spaces; M. Carlson replied that Sabi & Sons indicated the material’s consistency could prevent effective displacement via pipe. A. Harris, director of secondary education, asked to be notified in advance of timing and scope so the school can prepare staff and families if any access or operations are affected.
Project managers said the contractor Camputaro will provide a schedule and approach by June 3, and Downes expects the work to be completed within about two weeks after that schedule is set. The committee was told that limited additional material in the basin is not expected to pose ongoing problems and would likely be washed through the system during normal operations.
The update was presented as part of routine project closeout coordination among Friar Architecture, Colliers Project Leaders, and Downes Construction. The committee did not take a formal vote on the inspection itself.
