Nearly 30 years after the W.R. Grace & Co. property in Acton and Concord was designated as a national Superfund hazardous-waste site, environmental officials have removed all contaminated sediment and constructed new ground-water treatment systems.
The US Environmental Protection Agency recently announced it has finished its construction work at the site, but will continue to monitor activity there for the foreseeable future.
“We’re finally coming to the end of the race,’’ said Doug Halley, Acton’s health director, who has worked on the project since 1978. “The hard part, the hills, are behind us.’’
The EPA will conduct five-year reviews, continue the operation and maintenance of the ground-water treatment systems, and monitor the restored wetland areas and ground water.
Read more of Globe Correspondent Jennifer Fenn Lefferts' story here.
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