The Council Decision of 19 December 2002 establishing criteria and procedures for the acceptance of waste at landfills pursuant to Article 16 of and Annex II to Directive 1999/31/EC (the Landfill Directive) was published on 16 January 2003. It should be implemented into national legislation in all member states and associated countries before 16 July 2004. In order to support and provide inspiration for this process, the Landfill Group under the Nordic Council of Ministers and the Centre for Waste Research (C-RES) decided to organise a joint seminar on sustainable landfill in view of the implementation of the EU Landfill Directive and the Council Decision on waste acceptance criteria. The seminar took place on June 18 and 19, 2003, at the Comwell conference centre in Holte, Denmark. This report documents the seminar and the most important conclusions and recommendations resulting from the discussions. Abstracts and slides are included in appendices.