Mariana Reparation: Update on environmental recovery – April 2024

Mariana Reparation - Environmental Performance

April 2024

This document was prepared by Vale to present the main indicators, challenges and risks associated with the execution of the reparation and compensation programs for the impacts of the Fundão Dam breach. The document presents an overview of environmental obligations and indicates the main actions carried out by the Renova Foundation.

Sustainability Performance in Affiliates

Corporate Sustainability

Rio de Janeiro, April 2024

ENVIRONMENTAL REPARATION

Environmental Reparation - Tailings Management

Tailings characteristics

Research from the Federal University of Viçosa (UFV) indicates that there are no restrictions on environmental regeneration nor on the development of economic activities based on waste.

The waste is non-toxic, being composed of elements that occur naturally in rocks and soil (Fe, Mn, Al), sand (silica) and water

Studies carried out in rural areas of

Mariana and Barra Longa do not represent a risk to human health

The waste was characterized as	Human Health Risk Assessment
Studies will be carried out for a
non-hazardousin all samples
definitive result

Foto: Pedro Rubens

Environmental Reparation - Emergency Actions

Environmental Recovery

Phase 1 - Emergency revegetation of 808 acres and recovery of 113 tributaries.

Source: Fundação Renova, 2023.

Foto: Pedro Rubens

Environmental Reparation - Environmental Actions

Environmental Recovery

Phase 2 - Regularization of Gutters, Banks and controls of erosion processes in the recovered areas. Ongoing (cl.160).

Environmental Reparation - Environmental Actions

Environmental Recovery

Phase 3 - Forest Restoration Project on impacted rural properties. Ongoing (cl.159).

Areas in an advanced stage of recovery - MARIANA

542 ha of area received environmental actions aiming the forest restoration

R$ 121 millions invested in payment to the landowners to conserve e preserve the affected areas

2020

2023

Environmental Reparation - Environmental Actions

Direct planting areas with satisfactory development - Mariana

2020

2023

Areas subject to revegetation with arboreal individuals

Environmental Reparation - Environmental Recovery

Reparation Results*

2015	2017	2018	2019	2020	2021	2022	2023

Source: Fundação Renova, 2023.

*Section of the Gualaxo do Norte river in Mariana. Satellite photos, with natural variation in light.

Environmental Reparation - Biodiversity

Biodiversity Monitoring - Ongoing

Terrestrial

• The terrestrial biodiversity inventory was completed in the first phase of monitoring (2019-2020). In this monitoring¹, no impacts directly related to the dam breach were identified. In the second phase of monitoring² (started in 2021), a new methodology was adopted to assess the impacts that still exist on terrestrial fauna and flora. Based on the monitoring, conservation actions were defined and there are currently 44 active actions in the Conservation of Terrestrial Biodiversity Plan that have been carried out by the Foundation.

Aquatic

• The first year of implementing the planned actions for the recovery and conservation of aquatic biodiversity has been completed.
• Publication of the Red Book of the Aquatic Biota of the Doce River Threatened with Post-Breach Extinction, providing a portrait of the aquatic biota¹ after 5 years of the breach. The assessment used the application of IUCN criteria and allowed the definition of conservation strategies that are being adopted in the PABA - Aquatic Biota Integrated Action Plan, which defined 50 actions that are being executed by Renova.

Monitoring is ongoing, involving several research and teaching institutions:

Doce river mouth, Renova Foundation, 2023