Afin d'évaluer l'efficacité de la directive ESE, il a fallu examiner comment l'intégration de considérations environnementales avait influencé les procédures de planification et de programmation et dans quelle mesure les plans et programmes avaient été modifiés à la suite de l'application de la procédure ESE.
The assessment of the effectiveness of the SEA Directive has been based on the degree to which planning and programming procedures and decisions have been influenced by the integration of environmental considerations, and the extent to which PP were amended as a result of the application of the SEA procedure.