Surface infrastructure is required for the construction and operation of a deep geological repository.
The central component is the surface where the waste is delivered and prepared for emplacement in the repository.
The surface facility can be constructed at different locations within the planning perimeter. Its design is flexible and it should be integrated as far as possible into the landscape. The planning perimeter was defined by the Federal Government; it comprises the geological siting region and the surrounding areas within a maximum radius of 5 kilometres.
In January 2012, Nagra proposed a total of 20 siting areas for the surface facilities at a media conference hosted by the Swiss Federal Office of Energy (SFOE). These proposals were evaluated by the siting regions as part of the participation process, with the regions having the possibility to make their own alternative proposals.
According to the Sectoral Plan, Nagra had to work together with the regions to designate at least one siting area for each region and prepare an associated planning study.
By the end of May 2014, Nagra had presented planning studies for each siting region. The siting areas for the surface facilities have thus been identified for all six regions In Stage 3, close collaboration with the remaining siting regions will lead to further concretisation of the infrastructure at the surface with a view to the general licence applications. This includes deciding on the locations of the construction site installations or the location of the shaft head infrastructure.
In Stage 2, Nagra had identified the following siting areas for the repository surface facility in the six siting regions by the end of May 2014:
Geological siting regions with the siting areas for the repository surface facility identified in Stage 2.