Case C-104/15: Judgment of the Court (Ninth Chamber) of 21 July 2016 — European Commission v Romania Failure of a Member State to fulfil obligations — Environmental protection — Directive 2006/21/EC — Waste management — Mining — Tailing ponds — Dust re-emission — Fine airborn dust particles — Pollution — Human health — Obligatory preventative measures — Articles 4 and 13 — Finding of infringement