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Biography
Eva L. Davis is a Hydrologist in GWERD's Applied Research and Technical Support Branch. Dr. Davis' graduate work focused on groundwater flow and contaminant transport.
Since joining EPA in 1990, Dr. Davis' work has focused on thermal remediation technologies and the effects of temperature on the properties of organic contaminants and their transport in the subsurface. This work has included laboratory experiments on hot water displacement of oily contaminants from sands, measurements of soil characteristic curves for oil and water as a function of temperature, measurements of hydraulic conductivity and intrinsic permeability of sands using different liquids as a function of temperature, and measurements of the physical properties of NAPLs as a function of temperature. Current laboratory work includes treatability studies for thermal remediation for contaminants such as creosote and chlorobenzene/DDT. Field-based research activities include the use of steam injection for the remediation of DNAPL from fractured rock, and a detailed assessment of Electrical Resistance Heating to remediate solvents from tight soils. Dr. Davis' publications include EPA Ground Water Issue Papers on the effects of heat on transport of organic contaminants, and on the use of steam injection for soil and aquifer remediation.
Dr. Davis has also done extensive site specific technical support for sites where thermal remediation is being considered or is currently being used for remediation. Technical support activities include characterization for remediation purposes, evaluating the applicability of thermal methods for a particular site, overview of design, construction and operation, and performance assessment activities.