"January 13-15, 1998"

Natural attenuation: concepts and tools for evaluation.-- Natural attenuation fundamentals: subsurface microbiology and microbiological processes, monitoring natural attenuation, NA in soils, evaluation of natural attenuation.-- Natural attenuation fundamentals: biology of NA, natural attenuation of chlorinated solvents, general considerations for sampling and monitoring for NA, How is natural attenuation evaluated? water chemistry as means to determine the predominant electron acceptor processes in the aquifer.-- Subsurface contamination reference guide.-- Evaluation of apparent NA.-- How to plan a field-scale evaluation: ground-water sampling and analysis.-- Characterization of sources and flow paths.-- How to plan a field-scale evaluation: considerations for monitoring.-- Natural attenuation of chlorinated solvents in ground water.-- Natural attenuation of petroleum hydrocarbons in ground water.-- Overview of the technical protocol for NA of chlorinated aliphatic hydrocarbons in ground water under development for the U.S. Air Force Center for environmental excellence.-- Environmental chemistry and the kinetics of biotransformation of chlorinated organic compounds in ground water.-- Draft EPA Region 4 suggested practices for evaluation of a site for NA(biological degradation) of chlorinated solvents.--Symposium on NA of chlorinated organics in ground water.