EPA SELECTS CLEANUP REMEDY FOR DISPOSAL AREA AT CIBA-GEIGY SUPERFUND SITE IN MCINTOSH, ALA.
EPA SELECTS CLEANUP REMEDY FOR DISPOSAL AREA AT CIBA-GEIGY SUPERFUND SITE IN MCINTOSH, ALA. ATLANTA, July 23 /PRNewswire/ -- The U.S. Environmental Protection Agency (EPA) announced today that the Record of Decision (ROD) has been signed selecting a cleanup remedy for one former disposal area (referred to as Waste Management Area No. 8) at the Ciba-Geigy Chemical Superfund site in Washington County, Ala. The remedy was selected following a public meeting and public comment period on the proposed plan in May 1992. Cleanup costs are estimated at $49,723,000. EPA, in consultation with the Alabama Department of Environmental Management (ADEM), selected a remedy for this disposal area which will reduce the risk posed by the contamination. The remedy, which is similar to the remedy selected by EPA in 1991 for 10 other disposal areas, includes digging up contaminated soil and sludge to cleanup goals or physical excavation limits. Excavation limits are defined in the ROD as when groundwater (water table), iron slurry, concrete boulders or a depth of 20 feet are reached. Excavated materials will be treated on site. The cleanup design will include treatability studies for the various technologies to determine which is the most effective. The remedy will be fully protective of groundwater, the primary threat from site contamination. Cleanup action is expected to take eight to 10 years. Waste Management Area No. 8 was not addressed in the 1991 decision concerning 10 other waste disposal areas because it contained different kinds of waste and debris and required additional study to determine protective cleanup goals. Ciba-Geigy, under EPA's oversight, began treating contaminated groundwater in the shallow aquifer under the site in 1988. The system has been successful in containing the contamination. Ciba-Geigy is also investigating possible contamination of the flood plain area of the Tombigbee River and an on-site dilute ditch. The Ciba-Geigy site, located in McIntosh, covers approximately 2.4 square miles, adjacent to the Southern Railroad and the Tombigbee River. The McIntosh Plant, initially built in the early 1950s to produce agricultural and industrial chemicals, later manufactured the pesticides DDT and BHC. Other pesticides and organic chemicals are currently manufactured at the plant, which employs nearly 2,000 people. In 1979 and 1980, EPA and the Alabama Environmental Health Administration conducted preliminary inspections at the facility. Based on the presence of a large variety of chemicals (arsenic, benzene, chloroform, chlorobenzene, DDT, BHC) in the soil and the groundwater, EPA added the site to the Superfund National Priorities List in September 1983. The list contains abandoned and unregulated hazardous waste sites eligible for attention under EPA's Superfund long-term cleanup program. -0- 7/23/92 /CONTACT: Betty Winter, 800-435-9234, or Charlis Thompson, 404-347-3004, both of the U.S. Environmental Protection Agency/ CO: United States Environmental Protection Agency; Ciba-Geigy Corporation ST: Alabama IN: SU: EXE
BN-BR -- AT018 -- 2662 07/23/92 15:19 EDT
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|Date:||Jul 23, 1992|
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