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EPA/600/R08/107
Natural Attenuation of the Lead Scavengers 1,2-Dibromoethane (EDB) and 1.2-Dichloroethane (1,2-DCA) at Motor Fuel Release Sites and Implications for Risk Management
(74 pp, 2.11 MB, About PDF)Abstract
The lead scavengers 1,2-dibromoethane (EDB) and 1,2-dichloroethane (1,2-DCA) were included along with lead in conventional leaded gasoline used for automobiles in the US prior to 1988. Old spills of leaded gasoline form underground storage tank systems (USTs) at gasoline service stations may contaminate ground water aquifers used to supply drinking water. This report is intended for regulators in the U.S. EPA Regions and in the state environmental agencies who manage the risk of EDB and 1,2-DCA contamination in ground water. The report reviews the previous use of EDB and 1,2-DCA in leaded motor fuel, provides information on the transport and fate of EDB and 1,2-DCA at motor fuel release sites, and presents results of a study of the current distribution of EDB and 1,2-DCA at motor fuel release sites and the associated chance of contaminating ground water.