[en] Article 35 of the Treaty requires the member States to set up permanent installations for monitoring radioactivity in the atmosphere, water and soil, in order to guarantee compliance with the basic standards of health protection for the population and workers against ionising radiation risks. All member States, whether or not they have nuclear installations, are therefore required to implement environmental, monitoring arrangements throughout their territory. By virtue of the provisions of this same Article 35, the European Commission also has the right of access to these monitoring installations, in order to check their operation and effectiveness. From 26 to 30 May 2008, the European Commission visited the Tricastin site in order to verify the monitoring arrangements adopted by the EURODIF installation. It concluded that France was compliant with the provisions of article 35 of the EURATOM Treaty. However, some suggestions were made. The conclusions of this verification will be available on the European Commission's web-site (http://ec.europa.eu). The European Commission has developed tools to collect and exchange data and information between the member State: - REM is database to collect data reported to the Commission according to article 36; - ECURIE (European Community Urgent Radiological Information Exchange) is a system for the early notification and exchange of information in the event of a radiological or nuclear emergency, - EURDEP (European Radiological Data Exchange Platform) is both a standard format for radiological data and a network for the exchange of automatic monitoring data. (author)