Jura-Südfuss

The geological siting area covers an area of around 65 square kilometres. The host rock formations that come into question in the area are the Opalinus Clay (with its confining units) in the west and the Effingen Beds in the east.

Understanding of the spatial conditions in the area is based on 2D seismic investigations and partly on the results from the deep borehole at Schafisheim. The siting area lies close to the Folded Jura at the northern boundary of the Molasse Basin and is therefore partly subject to strong tectonic stress, which is expressed visibly in some of the regional structures. There are also indications of deformation outside these regional elements and large-scale quiet bedding is rare.

Overall, the siting area is evaluated as being suitable. 

The underground installations for a deep geological repository for low- and intermediate-level waste in the host rocks Opalinus Clay and Effingen Beds could be constructed in the area shown in green.

Siting communities:

Canton Solothurn: Däniken, Dulliken, Eppenberg-Wöschnau, Erlinsbach, Gretzenbach, Lostorf, Niedergösgen, Obergösgen, Olten, Schönenwerd, Starrkirch-Wil, Stüsslingen, Trimbach, Winznau

Canton Aargau: Aarau, Buchs, Gränichen, Hirschthal, Holziken, Kölliken, Muhen, Oberentfelden, Suhr, Unterentfelden

Planning perimeter for surface facilities

The required surface structures (e.g. portal of the access tunnel) can also be located outside this siting region. Working together with the affected Cantons and representatives from Germany, the Federal Government has defined planning zones (so-called provisional planning perimeters) that include these additional areas. The planning perimeter extends up to 5 km around the geological siting region and should be connected; it should also have good road or rail access. Mountainous and hilly areas and protected natural areas are restricting factors. The Federal Office of Energy announced the provisional planning perimeters on 10th December 2009.

Additional communities within the provisional planning perimeter (besides the siting communities):
Canton Solothurn: Hägendorf, Kappel, Rickenbach, Walterswil, Wangen bei Olten

zentrale verkehrsgünstige Lage

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• The Federal Office of Energy (SFOE) is responsible for the sectoral plan process. Further information and contact persons for questions on the sectoral plan can be found under: www.bfe.admin.ch/radioaktiveabfaelle

• The Swiss Federal Nuclear Safety Inspectorate (ENSI) (until 31 December 2008: HSK) is the regulatory authority for all questions relating to safety. Further information can be found under: www.ensi.ch

• For questions to Nagra on your region:



• Susanne Haag     Tel. +41 (0)56 437 12 70