Exchange of information
Article 21
1. The Commission, assisted by the Committee referred to in Article 23, shall ensure that there is an appropriate exchange of technical and scientific information between Member States, with a view to developing methodologies relating to: (a) the implementation of Article 20; (b) the rehabilitation of those closed waste facilities identified under Article 20 in order to satisfy the requirements of Article 4. Such methodologies shall allow for the establishment of the most appropriate risk assessment procedures and remedial actions having regard to the variation of geological, hydrogeological and climatological characteristics across Europe. 2. Member States shall ensure that the competent authority follows or is informed of developments in best available techniques. 3. The Commission shall organise an exchange of information between Member States and the organisations concerned on best available techniques, associated monitoring and developments in them. The Commission shall publish the results of the exchange of information.