Orano - Annual Activity Report 2025 179 SUSTAINABILITY STATEMENT 4 Environmental information In 2025, Orano Tricastin organized a participatory day to plant a Miyawaki-type micro-forest of 800 trees on its site. This action took place over one day, with employees and their families, and aims to reach an initial state of equilibrium within a time horizon of around five years. 2025 IN ACTION Improvement of ecological corridors on the Bessines site In 2025, the Bessines site planted more than a kilometer of shrub hedges as part of an ecological restoration project. This planting operation involved planting more than 700 young trees of species suited to the Limousin region and addresses a major environmental challenge: rebuilding ecological corridors that will eventually allow local wildlife to cross the Bessines site from north to south and reconnect their natural habitats, including the Gartempe Valley, renowned for its rich natural heritage. Living alongside the biodiversity present on our sites and nearby For the existing Orano sites, several are located near areas of ecological interest (See table in Section 4.2.3.1), or manage green spaces (on-site) or natural spaces (outside). Thus, one of the challenges is also to live alongside the surrounding biodiversity by becoming aware of its value, in particular through the implementation of differentiated management plans and the fight against invasive species. In 2025, three Orano sites, Tricastin, la Hague, and Malvési, worked on updating their green space management plans to better integrate the “biodiversity” aspect into current practices. In 2025, Orano partnered with two design and landscape schools and carried out a field mission on Orano Tricastin to work on several concrete use cases: integration of a new tertiary building, developments to promote soft mobility on the site, enhancement of local biodiversity, etc. Lastly, in addition to the projects and impact studies carried out, the precise environmental situation of Orano sites is regularly updated thanks to local inventories using, for example, standardized rating methods (e.g. aquatic environments) to monitor and assess the impact of activities on biodiversity. Lastly, Orano pays particular attention to the end-of-life at its sites, particularly in mining. Thus, from 2021, all the sites concerned have included a biodiversity component in any new remediation plan. In France, uranium mining was completed in 2001, with the closure of the last site located at Jouac in Haute-Vienne, and the depletion of economically mineable uranium deposits. Orano has launched a major conversion and remediation program for all its former mining sites. In total, more than 35% of these mines have been converted into ecological and/or forested areas with extremely rich biodiversity. Orano has relied on the implementation of a Simple Management Plan (PSG). This tool allows for the planning and scheduling of logging and maintenance work over a ten-year period by defining silvicultural objectives. To date, 763 hectares of plots in France are managed using a PSG. In 2020, an additional 535 hectares located in Haute-Vienne were added to the forest management program, bringing the total surface area of French forests, for which Orano is responsible, to around 1,300 hectares. Promoting local biodiversity and reporting on our actions on the subject Orano is also committed to actions to promote local biodiversity with stakeholders, to report and raise awareness among the various audiences about its protection. One example of this is the project for the ecological enhancement of the former regulation basin on the Orano Malvési site in partnership with a company specializing in biodiversity. These actions also involve raising awareness among Orano employees of the biodiversity present on the sites, through actions intended to raise awareness of its value, and to report on local issues and actions carried out. For example, display panels listing the species present have been displayed at all la Hague and Tricastin sites. Partnerships with NGOs, government services, and experts are also favored so that the Orano group can benefit from advice and support actions aimed at promoting biodiversity. In order to further improve the consideration of biodiversity protection in all its activities, in 2021 Orano joined the B4B+ business club, managed by Caisse des Dépôts et Consignations Biodiversité, and participates in the work of the “value chain” group. This work aims to provide a clear and integrated view of the impact of activities and investments on biodiversity throughout their value chain, by identifying the main sources of impact. With regard to aspects related to raising awareness among teams, Orano has deployed the Biodiversity Fresque as part of certain training courses. In July 2025, Orano Mining launched a photo contest to highlight the diversity and richness of nature on and around the mining sites of Orano Mining and its subsidiaries. All employees are invited to participate and to take a close look at their natural environment – an essential first step towards its preservation. 4.2.3.4 Targets related to biodiversity and ecosystems Orano’s strategy is based on an assessment of its overall biodiversity footprint, carried out in 2023 using the Global Biodiversity Score (GBS) tool of Caisse des Dépôts et Consignations Biodiversité. The group’s overall results, as well as those specific to Orano Mining,
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