120In accordance with settled case-law, it is at the date 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, inter alia, judgments of 26 October 2006, Commission v Portugal, C‑239/04, EU:C:2006:665, paragraph 24, and of 26 April 2017, Commission v Germany, C‑142/16, EU:C:2017:301, paragraph 42).
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