Superfund Record of Decision (EPA Region 2): Hudson River PCBs (Polychlorinated Biphenyls) Site, New York, September 1984

摘要

During a 30-year period ending in 1977, the Hudson River was contaminated with polychlorinated biphenyls (PCBs) from two capacitor manufacturing plants owned by the General Electric Company. Field surveys have shown that PCB contamination is found in 40 submerged sediment hot spots, 5 exposed shoreline remnant deposits, dredge spoils on the banks of the upper Hudson River and in estuary sediments. The remedial alternative selected for this site consists of in-place containment of remnant shoreline deposits. This temporary solution includes: covering affected areas with an 18-inch thick layer of subsoil followed by a 6-inch layer of topsoil, grading and seeding the cover to minimize erosion and, if necessary, bank stabilization to prevent scouring. An alternative to address submerged PCB hot spots was not selected at this time because of the lack of existing data to establish that existing technology would be effective and reliable. The State will conduct a dredging demonstration program using funds from Section 116 of the Clean Water Act. If adequate, the information from this demonstration project will be used to develop a remedial action which will address both river sediments and the exposed remnant deposits.