The 38-acre Waste Disposal, Inc. site is located in Santa Fe Springs, California. The site consists of 22 individual parcels of land owned by multiple owners. The site contains a buried, 42-million-gallon-capacity concrete-lined reservoir originally constructed for crude petroleum storage. Wastes disposed of at the site include petroleum-related chemicals, solvents, sludges, construction debris, drilling muds and other waste materials. Following cleanup, operations and maintenance activities and monitoring are ongoing.