For anyone who’s in need of reality adjustment. Hand puppets, take note – Hudson
Clearwater’s Dredging Fact Sheet
The Hudson River is the largest federal Superfund site in the US, covering a 200 mile stretch. Polychlorinated biphenyls (PCBs) dumped by General Electric at their Hudson Falls and Fort Edward plants continue to contaminate both the Upper and Lower Hudson River. GE’s dumping, most of which was done without permits, occurred from 1946 until 1977, when PCB use was banned. Small amounts of PCBs continue to seep into the river from bedrock beneath GE’s plants, which GE will (was supposed to) remedy by 2003. GE is responsible for the costs of cleaning up their PCBs.
The Hudson River is not ‘cleaning itself’ of PCBs. Scientific studies have shown that less than 10% of PCB mass has been reduced by dechlorination over the past 20 years, leaving slightly lighter PCB molecules that are still toxic. PCBs are most often in the top nine inches of sediment, making them available to the aquatic food web. Each year, five hundred pounds of PCBs flow over the Federal Dam in Troy from sediments in the Upper Hudson and move down river.
PCBs remain an unacceptable health risk for residents and wildlife in the Hudson Valley. PCBs cause cancer in animals and are a probable human carcinogen. PCBs cause neurological, reproductive, and endocrine problems, as well as birth defects in both humans and wildlife.
Currently, fishing in the Upper Hudson is catch and release only. Anglers are prohibited from eating fish from this 40 mile stretch due to PCB contamination. Women of childbearing age and children are advised not to eat any fish from the Lower Hudson, and men are advised to limit their consumption. Despite health advisories, many anglers and their families continue to eat their catch.
Modern environmental dredging equipment and techniques can safely remove contaminated sediment. Hydraulic dredges, such as the cutterhead dredge and the eddy pump, and enclosed mechanical buckets are designed to minimize resuspension of contaminated sediments. Environmental dredging is much more contained and precise than navigational and construction dredging and has been used successfully in environmental cleanups throughout the US.