Working plan BDG 91/92

This report describes the investigative work planned at the potential location Bois de la Glaive, one of four possible locations for a waste disposal site for short-lived low and intermediate-level radioactive waste in Switzerland. This document replaces the 'plan d'execution BDG 89' dated October 1989, which lists the work which Nagra intends to carry out according to the preparatory work in accordance with Article 15 of the Bundesgesetz (Federal Law) regarding compulsory expropriation. This action was unfortunately necessary owing to the intense local opposition to the project. Owing to this opposition it was only possible to carry out field tests for the geophysical work and the plaster capped drill holes at the Bois de la Glaive as well as the hydrological cadastre. Thanks to a recommendation by the local authority and an amicable arrangement with the private owners at most of the observation points, it was possible to start periodic inspection measurements within the framework of the hydrogeological tests from March 1991. The aim of the tests described in this document is to obtain primary geological knowledge, as well as, where applicable, identify possible disqualifying criteria for the potential location at Bois de la Glaive. The different geological and hydrogeological tests are presented following an introduction which refers to the geological, historical and legal problems. It is intended to carry out these tests in 1991/92 possibly extending over into the first quarter 1993. Thus the necessary level of information should be achieved for this location. (author) figs., tabs., 14 refs