omega chemical corporation

12504 AND 12512 E. WHITTIER BOULEVARD

The Omega Chemical Corporation facility was located at 12504 and 12512 East Whittier Boulevard in Whittier, California (former Omega property), and was a refrigerant and solvent recycling, reformulation and treatment facility that operated from approximately 1976 to 1991. Drums and bulk loads of waste solvents and other chemicals from various industrial activities were processed at the facility. As a result of the operations and spills and leaks of various chemicals, the soil and groundwater beneath the former Omega property became contaminated with high concentrations of tetrachloroethylene (PCE), trichloroethylene (TCE), Freons 11 and 113 and other contaminants. Contaminated groundwater extends four and one-half miles downgradient (south/southwest) of the former Omega facility. In January 1999, EPA placed the Omega Chemical Corporation Superfund Site (Omega Site) on its National Priorities List. EPA manages the Omega Site as three operable units (OUs): OU-1 includes the contaminated soil and groundwater at and in the immediate vicinity of the former Omega property; OU-2 is composed of groundwater contamination outside and generally downgradient (south-southwest) of OU-1; and OU-3 addresses vapor intrusion from the Omega Site that has occurred in several buildings on and in close proximity to the former Omega facility. Vapor intrusion is the process by which contaminant vapors in the soil and/or groundwater migrate through subsurface soils and enter overlying buildings.

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