115First, with regard to situations in which the EU authorities have a broad discretion, in particular as to the assessment of highly complex scientific and technical facts in order to determine the nature and scope of the measures which they adopt, review by the EU judicature is limited to verifying whether there has been a manifest error of assessment or a misuse of powers, or whether those authorities have manifestly exceeded the limits of their discretion. In such a context, the EU judicature cannot substitute its assessment of scientific and technical facts for that of the EU authorities on which alone the FEU Treaty has placed that task (judgments of 21 July 2011, Etimine, C‑15/10, EU:C:2011:504, paragraph 60, and of 7 March 2013, Bilbaína de Alquitranes and Others v ECHA, T‑93/10, EU:T:2013:106, paragraph 76; see, also, judgment of 11 May 2017, Deza v ECHA, T‑115/15, EU:T:2017:329, paragraph 163 and the case-law cited).
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