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Natural Attenuation of Chlorinated Solvents and Fuel Components (BTEX and MTBE) in Ground Water
Citation:
WILSON, J. T. Natural Attenuation of Chlorinated Solvents and Fuel Components (BTEX and MTBE) in Ground Water. Presented at The Academic Exchange Center, Beijing, CHINA, October 11 - 17, 2008.
Impact/Purpose:
The purpose is to review the theory and practice of MNA in the USA
Description:
Monitored Natural Attenuation is widely used in the USA to deal with ground water contamination from fuel components such as the BTEX compounds or MTBE or TBA and from chlorinated solvents such as PCE, TCE, and TCA. This presentation reviews the theory and practice of MNA in the USA. This presentation also reviews the use of geochemical parameters to estimate the assimilative capacity for BTEX compounds, it reviews the role of attenuation of concentrations in the source area and attenuation of concentrations along the plume flow path, it presents calculations to extract rate constants for attenuation, and it provides summary data on rates of attenuation published in the literature. The presentation reviews the use of stable isotope analyses to identify degradation of MTBE in ground water, and the use of PCR techniques to determine the density of Dehalococcoides bacteria, and the association of the density of the bacteria with the rate of natural attenuation of chlorinated solvents in ground water.