69Accordingly, the General Court was correct in holding, in essence, in paragraphs 67, 83 and 88 of the judgment under appeal, that, in order to state in the manner required the grounds for conducting the review, a party requesting the internal review of an administrative act under environmental law is required to put forward the facts or legal arguments of sufficient substance to give rise to serious doubts as to the assessment made in that act by the EU institution or body.
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