The geological barrier is determined by geological and hydrogeological conditions below and in the vicinity of a landfill site providing sufficient attenuation capacity to prevent a potential risk to soil and groundwater.
Geološko pregrado določajo geološke in hidrogeološke razmere pod odlagališčem in v njegovi bližini, ki zagotavljajo zadostno oslabitveno zmogljivost, da se prepreči možno tveganje za tla in podtalnico.