Studies document PCB contamination problem in Neponset River; New reports could prove decisive in resolving dams' fate

The Baker Dam in Lower Mills is one of two dams on the Neponset River in Boston. Environmental advocates want the dam removed to facilitate fish migration. New studies due out this month will also point to the dam's role in trapping sediments that contain PCBs, remnants of industrial waste dumped into the river decades ago. Reporter file photo

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