40At the outset, it should be recalled that, as is apparent from Article 1 of Directive 2001/42, the fundamental objective of that directive is to ensure that plans and programmes which are likely to have significant effects on the environment are subject to an environmental assessment when they are prepared and prior to their adoption (Terre wallonne and Inter-Environnement Wallonie, paragraph 32, and Case C-295/10 Valčiukienė and Others [2011] ECR I-8819, paragraph 37).
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