On May 24, 2025, at the end of the Course de l’Espoir organized as part of the “La Main au Chapeau” festival, Buchelay residents were invited by Mayor Stéphane Tremblay to inaugurate the new park built and financed by ECT using inert soil from the local construction industry. Despite mixed weather conditions, this warm moment was extended over a glass of friendship, shared in the heart of the park. Take a look at some of the highlights of the day’s events.

Spectacular limestone models! Immerse yourself in the heart of the future Jacques Chirac Park in Chelles through our photo gallery. Over 6 hectares, ECT teams have created an ecological environment inspired by the region’s ancient quarries. These reliefs will be home to dry grasslands, which have become rare in the Île-de-France region, providing a haven for specific biodiversity.

Developed in consultation with the town of Loison-sous-Lens, this new nature and leisure area is part of an initiative to enhance the living environment. Located near the banks of the Souchez river, the park is a natural and recreational area combining ecological facilities and leisure zones accessible to all.

Explore our photo gallery dedicated to the manufacture and installation of the fertile substrate for the future Parc du Sempin in Chelles. These images illustrate every stage of this innovative process, from the preparation of green waste compost and inert soil from the construction industry to their mixing and application on site. Find out how our teams transform these recycled materials into fertile soil, ready to be planted in the park.