VERGENNES — The Vergennes City Council on Tuesday adopted a plan to upgrade the city’s aging sewer treatment plant that was recommended by plant operator Rick Chaput — and lowers the overall cost estimate of the city’s global sewer system fix to about $17 million. Two weeks earlier the estimate had assumed a different, more expensive upgrade to the Canal Street plant that had pegged the total cost of an upgrade to the plant and the city’s collection system at about $18.2 million. Vergennes residents might … (read more)