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Inspections conducted by several local, state and federal authorities, including environmental regulators IBAMA and SEMAS, have confirmed the integrity of the bauxite residue deposits and that there have been no spill or overflow. This was later re-confirmed by relevant authorities in a congressional hearing in Brasilia on 15 March.

Hydro, as the main shareholder of Alunorte, is conducting both an internal and an independent review by environmental consultancy SGW Services to clarify all relevant facts regarding the management of rain and surface water from the Alunorte alumina refinery in Barcarena, northern Brazil. The conclusions from these reviews will be presented April 9.

There are no indications that there have been any significant or lasting impact on the environment following the extreme rainfall in February.

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