Long-term geological and climatic evolution, including glacial and fluviatile erosion and uplift, geomorphological effects and activation or re-activation of fault zones due to natural processes, are not expected to negatively impact the safety-relevant properties of the barrier system over the time period for assessment of one million years. While, over a period of hundreds of thousands of years, erosion processes, in combination with uplift, gradually result in a partial loss of overburden, an exhumation of any part of the disposal areas, or any decompaction of the CRZ that would affect safety-relevant properties (especially its porosity, hydraulic conductivity, and self-sealing capacity) can be ruled out over the time period for assessment.