[img]http://www.delftgeosystems.nl/files/images_org/DGPlumeScherm.jpg[/img]DG>Plume is an easy to use model for calculating contaminant transport. It uses powerful analytical algorithms, thereby requiring no difficult boundary conditions to be entered. DG>Plume is based on the program AT123D, created by the Oak Ridge National Laboratory, USA. The graphical user interface, with a Windows look-and-feel, allows both frequent and infrequent users to analyse contaminant problems quickly.