Department of Civil Engineering, California State University, Sacramento: Associate Professor, 1994–1999; Professor, 1999–present; Chair, 2003–2012
Office of Water Programs, College of Engineering and Computer Science, Department of Civil Engineering, California State University, Sacramento, 1997–present
California Department of Toxic Substances Control, Sacramento, 1988–1994
environmental data analysis; spatial analysis of discrete contaminants; movement of chemicals in soil systems; contaminated site characterization and remediation