Commission clears feasibility study for permeable reactive barrier to reduce nitrogen into Long Pond

The Lakeville Conservation Commission on April 8 voted to close a public hearing and issue a negative determination allowing a feasibility study for a permeable reactive barrier along the western shore of Long Pond near Clark Shores.

Karen Petinelli, an environmental planner at the Southeast Regional Planning and Economic Development District, told the commission the project will place 11 small-diameter borings and install four permanent groundwater monitoring wells to assess nitrogen concentrations and the feasibility of a pilot PRB. “It pulls, like, 90% of the nitrogen from the groundwater out of of the groundwater before it enters the pond,” Petinelli said, describing the technology.

The study will sample groundwater horizontally and vertically along about 4,000 feet of corridor to identify a 200- to 400-foot pilot stretch for a PRB. “We’re looking to assess where best to import a a pilot study…we’re looking at a stretch of about 200 to 400 feet,” said an engineer from Fuss & O’Neil, who described field instrumentation, laboratory confirmatory…