24The fact that, after its completion, the project may not have produced such effects is immaterial to that assessment. It is at the time of adoption of the decision authorising implementation of the project that there must be no reasonable scientific doubt remaining as to the absence of adverse effects on the integrity of the site in question (see, to that effect, Case C-209/02 Commission v Austria [2004] ECR I-1211, paragraphs 26 and 27, and Waddenvereniging and Vogelbeschermingsvereniging, paragraphs 56 and 59).
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