FIG. 10. . Time series comparing simulated plot scale results of (top) drain discharge and (bottom) Br resident concentration at the drain position obtained with single (one-dimensional single porosity model [1D-SPM] and two-dimensional single porosity model [2D-SPM]) and dual-permeability models (one-dimensional dual-permeability model [1D-DPERM] and two-dimensional dual-permeability model [2D-DPERM]), assuming zero Br concentration at Day 97 (higher mass transfer rate coefficient, _ss, and Br addition to the soil matrix domain only for DPERM).