At the end of November 2025, the “Let’s plant for the Nature” initiative brought together 40 children from recreation centers and 20 young elected representatives from the Children’s Municipal Council in the presence of the Mayor of Chelles. This environmental awareness initiative is part of the development of the future Jacques Chirac Park, carried out by ECT in partnership with Safer Île-de-France, the City of Chelles, and the Paris-Vallée de la Marne Urban Community.

These candid photos illustrate the steps involved in creating fertile soil at the Tertre des Roches site. This soil is made from silt sourced from construction sites, thereby avoiding the need to import topsoil. Discover how our teams are laying this fertile layer to prepare for the planting of this natural space.

Discover the progress of the Coubert project in Seine-et-Marne. The gallery shows the key stages: reception of inert soil from local construction sites, quality control and implementation by field teams.

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.