Transport Phenomena -- Colloid Facilitated Transport in Natural Porous Media: Fundamental Phenomena and Modelling -- Influence of Na-bentonite Colloids on the Transport of Heavy Metals in Porous Media -- Colloid Transport Processes: Experimental Evidence from the Pore Scale to the Field Scale -- Transport of Colloids in Filter Columns: Laboratory and Field Experiments -- Biocolloids and Biofilms -- Colloid and Microbe Migration in Granular Environments: A Discussion of Modelling Methods -- Influence of Biofilms on Colloid Mobility in the Subsurface -- Subsurface Transport of Heavy Metals Mediated by Biosolid Colloids in Waste-Amended Soils -- Colloids and Contaminants, Engineering Aspects -- Ion - Colloid - Colloid Interactions -- Release of Contaminants from Bottom Ashes - Colloid Facilitated Transport and Colloid Trace Analysis by Means of Laser-Induced Breakdown Detection (LIBD) -- The Role of Colloid Transport in Metal Roof Runoff Treatment.