David Jordan’s professional experience has focused on the areas of quantitative hydrogeology, engineering, numerical modeling, geographic information systems (GIS), data management, and program and project management. He provides management and technical guidance for a variety of projects in water resources, GIS, and contaminant hydrogeology. He has led technical teams in the development and application of regional groundwater flow and transport models for evaluating water availability, water rights, mine dewatering, and seawater intrusion for private, state, municipal, and water district clients throughout the western US. David is a recognized expert in data management, analysis, and visualization through the application of GIS. He develops and applies innovative remote-sensing based techniques to evaluate land use and depletions from anthropogenic (irrigated agriculture) and natural (riparian) areas, frequently at the basin scale. In addition, he applies decision support systems and dynamic systems models to ensure that water resources managers make informed decisions based on rigorous analysis of available data. The application of these tools also facilitates stakeholder involvement and understanding. David also has experience with determining and evaluating the extent and fate of soil and groundwater contamination. He has worked on numerous high-profile litigation cases involving groundwater contaminated by MTBE, petroleum hydrocarbons, and dense non-aqueous phase liquids (DNAPL) at sites across the US. His work has included determining the extent of contamination via sophisticated data visualization and analysis techniques, as well as groundwater flow and contaminant transport modeling to predict potential fate and transport of contaminants. Much of this work has been in support of cost recovery and cost allocation actions.