| Abstract |
The Ciba-Geigy Chemical Corporation site is located in Dover Township, Ocean County, New Jersey. From 1952 to 1988, a variety of synthetic organic pigments, organic dyestuffs and intermediates, and epoxy resins were manufactured at the site. The company disposed of chemical wastes onsite in several locations. The drum disposal area and lime sludge disposal area were closed and capped in 1978. About this time, the filtercake disposal area was also closed and covered with soil. Ground water contamination is migrating from these inactive disposal sites easterly towards the Toms River. Contaminants are present in leaking drums, waste sludges, soils, and ground water. The primary contaminants of concern affecting the ground water are VOCs including benzene, PCE, TCE, and toluene; and metals including arsenic and chromium. The selected remedial action for the site includes sealing contaminated residential irrigation wells; on- and offsite ground water pumping with onsite treatment followed by temporarily retaining the ground water in basins for monitoring and subsequent discharge to the Toms River; and implementation of a river and ground water monitoring program. |
