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Commission approves temporary drawdown of Collins Pond for dam inspection; requires weekly progress reports
Summary
The New Canaan Inland Wetlands Commission unanimously approved a temporary drawdown and cofferdam installation at Collins Pond to let consultants inspect the dam’s upstream face and two abandoned outlet pipes, with a condition that the site engineer provide weekly written progress reports to town staff.
The New Canaan Inland Wetlands Commission voted unanimously July 21 to permit a temporary drawdown of Collins Pond at the Rippewam Road site so engineers can inspect the dam’s upstream face and two abandoned outlet pipes as part of dam repair design work. Joel Moore, a geologist for Verdantus, presented the plan and described cofferdams and bypass pumping to allow visual inspection.
Why this matters: The owners seek to confirm the condition of a 12‑inch cast‑iron low‑level outlet on the dam’s west side and a 4‑inch pipe on the east side — one outlet to be made operable and the other to be sealed — and to document the concrete face before submitting repair plans to the…
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