Commission Opinion pursuant to Article 251(2), third subparagraph, point (c) of the EC Treaty, concerning the 2nd Reading of the European Parliament with a view to the adoption of a Proposal for a Directive of the European Parliament and of the Council on environmental quality standards in the field of water policy and amending Directives 82/176/EEC, 83/513/EEC, 84/156/EEC, 84/491/EEC, 86/280/EEC and 2000/60/EC amending the proposal of the Commission pursuant to Article 250 (2) of the EC Treaty