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Summary of Salient Findings of "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"
Citation:
WILSON, J. T. AND C. J. ADAIR. Summary of Salient Findings of "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" . Presented at 21st Annual National Tanks Conference and Expo, Sacramento, CA, March 29 - April 03, 2009.
Impact/Purpose:
The potential for contamination of Groundwater if 1,2-dibromoethane (EDB) and 1,2-dichloroethane (1,2-DCA) were to leak from an underground storage tank.
Description:
Tetra-ethyl lead was widely used in leaded automobile gasoline from 1923 until 1987 (See Figure 1). To prevent lead deposits from fouling the engine, 1,2-dibromoethane (EDB) and 1,2-dichloroethane (1,2-DCA) were added to the gasoline to act as lead scavengers. These compounds reacted with lead in the engine to make volatile compounds that were discharged in the exhaust. If leaded gasoline is spilled to ground water from a leaking underground storage tank, there is a potential for EDB and 1,2-DCA to partition from the spill and contaminate ground water. The Maximum Contaminant Levels (MCLs) for EDB and 1,2-DCA are 0.05 and 5.0 ug/L respectively. The concentrations of EDB and 1,2-DCA that would be expected in ground water in contact with unweathered leaded automobile gasoline are 1,900 and 3,700 ug/L respectively.
URLs/Downloads:
SUMMARY OF SALIENT FINDINGS OF "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" (PDF, NA pp, 1384 KB, about PDF)2009 Conference URL
2010 Conference URL