GREEN BAY (WKOW) -- Dredging and shipwreck removal is again underway in the Fox River near Green Bay, according to a report from Press-Gazette Media.
Dredging resumed last week after a long break over the winter. Tetra Tech is overseeing the work on the river and also plans to resume removing tugboat and barge wreckage behind its Green Bay facility.
Green Bay-area paper companies are under federal orders to remove polychlorinated biphenyls, or PCBs, from the river. PCBs are chemicals used in the 1950s and 1960s to produce carbonless copy paper and have been linked to cancer and other health problems.
Workers have dredged more than 2.16 million cubic yards of sediment, hauled more than 1.1 million tons to a landfill and treated and discharged about 3.5 billion gallons of water since cleanup began in 2009.
Tetra Tech expects to remove about 670,000 cubic yards before ending seasonal work this fall and expects to be finished after the 2015 season. The entire project is expected to wrap up in 2017.
A cluster of sunken vessels must be removed as part of the cleanup, including 19th-century tugboats like the Bob Teed and the Satisfaction and several barges. All were sunk in the 1940s after they outlived their usefulness. The area where they went down is on the National Registry of Historical Places.
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