the need to establish the overall size of the European Parliament in an enlarged Community. DECLARATION ON THE HIERARCHY OF COMMUNITY ACTS The Conference agrees that the Intergovernmental Conference to be convened in 1996 will examine to what extent it might be possible to review the classification of Community acts with a view to establishing an appropriate hierarchy between the different categories of act. DECLARATION ON THE RIGHT OF ACCESS TO INFORMATION The Conference considers that transparency of the decision-making process strengthens the democratic nature of the institutions and the public's confidence in the administration. The Conference accordingly recommends that the Commission submit to the Council no later than 1993 a report on measures designed to improve public access to the information available to the institutions. DECLARATION ON ESTIMATED COSTS UNDER COMMISSION PROPOSALS The Conference notes that the Commission undertakes, by basing itself where appropriate on any consultations it considers necessary and by strengthening its system for evaluating Community legislation, to take account in its legislative proposals of costs and benefits to the Member States' public authorities and all the parties concerned. DECLARATION ON THE IMPLEMENTATION OF COMMUNITY LAW 1. The Conference stresses that it is central to the coherence and unity of the process of European construction that each Member State should fully and accurately transpose into national law the Community Directives addressed to it within the deadlines laid down therein. Moreover, the Conference, while recognizing that it must be for each Member State to determine how the provisions of Community law can best be enforced in the light of its own particular institutions, legal system and other circumstances, but in any event in compliance with Article 189 of the Treaty establishing the European Community, considers it essential for the proper functioning of the Community that the measures taken by the different Member States should result in Community law being applied with the same effectiveness and rigour as in the application of their national law. 2. The Conference calls on the Commission to ensure, in exercising its powers under Article 155 of this Treaty, that Member States fulfill their obligations. It asks the Commission to publish periodically a full report for the Member States and the European Parliament. DECLARATION ON ASSESSMENT OF THE ENVIRONMENTAL IMPACT OF COMMUNITY MEASURES The Conference notes that the Commission undertakes in its proposals, and that the Member States undertake in implementing those proposals, to take full account of their environmental impact and of the principle of sustainable growth. DECLARATION ON THE COURT OF AUDITORS The Conference emphasizes the special importance it attaches to the task assigned to the Court of Auditors by Articles 188a, 188b, 188c and 206 of the Treaty establishing the European Community.