I have 26 years of experience and specialize in the field of water quality with specific knowledge in the areas of fate and transport of pollutants, bio remediation and wetland bio geochemical processes. I have published on such topics as fate and transport of organic and inorganic pollutants, bio degradation processes, including bacterial transport, and biofouling and pollutant fluxes in stream and wetland sediments. I have testified on fate of organic pollutants in superfund sites, fate of non-aqueous-phase liquids (NAPLs) and the fate of bacteria in soils and groundwater.