Today was published in the Official Journal of the European Union ( OJEU L 37, 11.02.2011, p.19 ), the Questionnaire on the implementation of Directive 2009/31/EC on the geological storage of carbon dioxide (CCS Directive) . Member States have the obligation to send such questionnaire to the European Commission every three years , and for the first time by 30 June 2011 (Article 27.1, CCS Directive). The Commission is responsible for drafting the questionnaire, based on the procedure requirements of Directive 91/692/EEC on standardising and rationalising reports on the implementation of certain directive relating to the environment. In the case of the CCS Directive, the Commission has chosen to draft a questionnaire as it " appears to be best suited to ensure that the information provided by the Member States in their reports is complete and comparable ." Such questionnaire will facilitate the work of the Commission, both in controling implementation of the CCS Directive b...