Summary
The 6th seminar on Hydrogeology and Environmental Geochemistry was arranged on nov. 11. and 12. 1996 at the Knut S.Heier Conference Centre. NGU, Trondheim. The first day was primarily used for discussions of hydrogeological topics, and the presentations was mostly made in Norwegian. The second day was set aside for topics in ecochemistry with the presentation made in English. This year the theme of the seminar was (Geochemistry, Toxicology and Risk Assessment The seminar concluded with a debate on the motion that "Norms and action levels should be decided on the basis of natural background concentrations rather than toxicological criteria."