Januar 2001 eine wissenschaftliche Studie durch, um festzustellen, inwieweit das in Absatz 3 Buchstabe a festgelegte Ziel einer Reduzierung der Umweltbelastungen erreicht worden ist.  
If the Commission concludes that this objective has not been achieved on a sustainable basis, the Council, acting in accordance with Article 75 of the EC Treaty, may adopt measures, within a Community framework, which ensure equivalent protection of the environment, in particular a 60 % reduction of pollution.  