Paul Van der Heijde
Groundwater management
Compilation of ground-water models
Compilation of saturated and unsaturated zone modeling software
Compilation of saturated and unsaturated zone modeling software (update of EPA/600/R-93/118 and EPA/600/R-94/028)
Ground-water model testing
Groundwater modeling
Identification and compilation of unsaturated/vadose zone models
The Establishment of a groundwater research data center for validation of subsurface flow and transport models