EN
In the paper the results of geotechnical investigations of hydraulic permeability, shear strength and depth control of cut-off wall are presented. The barier performed in the DSM technology using a slurry composed of bentonite, cementations materials and water as well as polymineral clays. The tests were carried out using BAT system, Cone Penetration Tests and drillings. The main purpose of performed investigations was post construction quality estiomation of cut-off wall.