The Wauthier-Braine (20 km South of Brussels) disposal site has been selected to dispose non-toxi.c industrial wastes. lt is located ir1 a former sand quarry that have already been partially filled with inert and non–toxic waste. The lining system has been engineered in order to important settl,ements. Thi.s disposal site is the where geosynthetics and mineral materials were lining systems.