Use of Hydrogeochemical Information in Testing Groundwater Flow Models

Site characterisation and evaluation are important elements for determining the site suitability and long-term safety of a geological repository for high-level and/or long-lived radioactive waste disposal. In that respect, matching the results of the various geoscientific methods used in site characterisation is important for building confidence in the data, concepts and models used for describing and understanding geological barriers of deep repository systems and assessing their performances.

As groundwater chemistry may provide a method to test site-specific, time-dependent groundwater flow models, a workshop on the "Use of Hydrogeochemical Information in Testing Groundwater Flow Models" was hosted by the Swedish Nuclear Fuel and Waste Management Company (SKB) to assess the progress to date in this multidisciplinary aspect of site characterisation and evaluation.

These proceedings include the papers presented at the workshop, as well as a technical summary of the topics addressed and the conclusions reached.