Once released to the river, pcb interactions among sediment, water, and biota have distributed pcbs throughout the hudson river the hudson river between ft edward and troy is part of the lake champlain canal system and contains a series of run-of-the-river dams and associated locks. General electric (ge) has evaded responsibility for cleaning up its toxic mess in the hudson for decades and the us environmental protection agency (epa) is failing to hold the company accountable. It is estimated that over 90 percent of the pcbs in the water column of the lower hudson originate from a 40-mile stretch of river in the upper hudson between fort edward to troy pcbs from toxic hotspots in this area constantly disperse downstream, causing continued contamination of the hudson river estuary. Pcb contamination of the upper hudson river the general electric company's involvement in the pollution will be discussed, as well as the established clean up plans for the largest superfund site in the country. Proponents of the hudson river pcb dredging project would argue otherwise general electric is the sole responsible party for the pollution of the hudson river, having dumped polychlorinated biphenyls (pcbs) from their manufacturing plants along the hudson.
How is the hudson doing is the river clean swimmable the answers are mixed water quality has improved since the 1960s many noxious discharges have ceased, but leftovers from past pollution haunt the hudson, and new problems are becoming evident. General electric's pollution of the hudson river with polychlorinated biphenyls (pcbs) between 1947-77 is the major historic contamination of the hudson river valley this pollution caused a range of harmful effects to wildlife and people who eat fish from the river or drink the water. Epa will not require general electric to dredge more pollution from hudson river epa officials have determined that the dredging of 28 million cubic yards of polluted mud has reduced pcb levels. The hudson river has one of the highest levels of pcb pollution of any river on the east coast in this module, students will learn about the history of pcb's in the hudson, how pcb's get into the fish we eat, and what has been done to remove pcb's from the hudson river.
The objectives of the hudson river pcbs superfund cleanup are to reduce risks to people and the environment (including wildlife) by lowering pcb levels in fish, reducing the level of pcbs in hudson river water, reducing the mass of pcbs in. Hudson river tomcod evolved resistance to pcbs in the same way that a population of bacteria may evolve resistance to antibiotics over the course of a few hours and in the same way that a mammal species might evolve a camouflaged coat over the course of millennia: natural selection though the. Pcb contamination is considered the most serious environmental problem affecting the hudson river mud cat leads the industry in remote controlled, automated, and rov dredging technology and supplies engineering firms, governments, and contractors around the globe.
During a 30-year period before the ban, about 13 million pounds of pcbs were discharged into the hudson river from two general electric plants located in fort edward and hudson falls, new york. An excavator brings up sediment off of the bed of the hudson river during general electric's pcb dredging of the river on wednesday aug 22, 2012, in fort edward, ny (dan little/times union archive. In 2001, after a ten-year study of pcb contamination in the hudson river, epa proposed a plan to clean up the river by dredging more than 100,000 pounds (45,000 kg) of pcbs the worst pcb hotspots are targeted for remediation by removing and disposing of more than 26 million cubic yards of contaminated sediment.
Hudson river fish advisories chemicals in hudson river fish can harm your health even if the fish look healthy and the water looks clean learn about new york state health advisories on eating hudson river fish. New york’s own hudson river has been polluted by an estimated 13 million pounds of pcbs that were discharged into the river by general electric (ge) between 1947 and 1977 according to the united states environmental protection agency (epa), 200 miles of the river was contaminated, and is classified as one of the nation’s largest superfund. General electric released approximately 13 million pounds of pcbs into the hudson river from 1947 to 1976 the atlantic tomcod, microgadus tomcod , is a common bottom-feeding fish in the hudson that is not usually eaten by humans. Municipalities that use the hudson river as a drinking water source carefully monitor the water for pcbs, and there are no detectable levels in the water supplies  pcbs accumulate in the body and in the ecosystem. Dec releases hudson river pcb action plan calling for dredging of 250,000 pounds of pcbs from the hudson, relocation to a dewatering/encapsulation facility at site 10, and continuing evaluation of treatment/ destruction technologies, to be accomplished by 1998.
The decision problem of pcb pollution in the hudson river is ultimately whether we, as an economic society, undertake no action or proceed to reduce pcb's via dredging and/or bioremediation. Pcb pollution in the hudson though pcb discharges to the hudson ended in 1977, significant amounts of this toxic chemical remain in the river's bottom the pcbs enter animals and fish, building up to concentrations high enough to harm these creatures and people who eat them. Pcb c er ontamination of the hudson river ecosystem compilation of contamination data through 2008 c n of e h n r r described in this report include, but are not limited to: e m c n of c n d a and guidance criteria as well as to effects thresholds from the scientific literature. As a result, in many places, water contamination was simply a fact of life, particularly after evidence of pcbs — which are probable carcinogens, according to the epa — in the hudson river.
Tuxedo — a team of new york university scientists discovered that a species of bottom-feeding fish in the hudson river has genetically evolved an immunity to pcbs the decade-long study at the. View of the hudson river at the c springer welding works and marina looking towards an area marked for pcb dredging in rensselaer on thursday, june 7, 2018, in albany, ny. For half a decade, general electric has been paying for a massive dredging operation on the upper hudson river in new york the billion-dollar cleanup, designed to remove toxic pcbs, sparked.