Foreword. Numerical methods. The simulation of the transport of contaminants in groundwater flow; error estimates for a finite volume scheme; R. Eymard, et al. Inertial flow anisotropy in oblique flow through porous media; M. Firdaouss, P. Tran. An adaptive method for characteristics finite element method for solute transport equation in unsaturated porous media; M. Gabbouhy, Z. Mghazli. Estimation of parameter geometry; J. Heredia, et al. Fast real space renormalization for two-phase porous media flow; M. Hoffmann. Solution of convection-diffusion problems with the memory terms; J. Kacur. Optimal control approach for a flow in a unsaturated porous media; C. Murea, J.M. Crolet. Splitting the saturation and heterogeneity for time dependent effective phase permeabilities; M. Panfilov, A. Tchijov. Fuzzy simulation of waterflooding: a new approach to handling uncertainties in multiple realizations; A.B. Zolotukhin. Mass transport and heat transfer. A two-domain model for infiltration into unsaturated fine-textured soils; A. Abdallah, R. Masrouri. Numerical study of heat and mass transfer in a cubical porous medium heated by solar energy `Boubnov-Galerkin method'; A. Al Mers, et al. Cylindrical reactor performance evaluation for a solar adsorption cooling machine; E.H. Aroudam, A. Mimet. RETRASO, a parallel code to model REactive TRAnsport of SOlutes; I. Benet Llobera, et al. A numerical study of the coupled evolutions of micro-geometry and transport properties of simple 3D porous media; D. Bernard, G. Vignoles. Pore-scale modelling to minimize empirical uncertainties in transport equations; J.P. Du Plessis. Modelling contaminant transport and biodegradation in a saturated porous media; S.A. Kammouri, et al. Water phase changeand vapour transport in low permeability unsaturated soils with capillary effects; S. Olivella, et al. Behaviour of infiltration plume in porous media. Adequacy between numerical results and a simplified theory; C. Oltean, M.A. Bues. A comparison of two alternatives to simulate reactive transport in groundwater; M.W. Saaltink, et al. Comparison with experimentations and simulations of real cases. Modeling of organic liquid entrapment and surfactant enhanced recovery in heterogeneous media; L. Abriola. Application of the back-tracking method to the definition of sanitary zones of catchwork protection for drinking water supply; M. Bonnet, F. Bertone. Experimental and numerical investigation of porosity variations in saline media induced by temperature gradients; S. Castagna, et al. CLOG: A code to address the clogging of artificial recharge systems; A. Perez-Paricio, et al. Groundwater flow modelling of a landslide; J. Rius, et al. Trace gas absorption by soil. Simulation study on diffusion processes of trace gases, CO, H2, and CH4 in soil; S. Yonemura, et al. List of contributors.