Establishment of an impact study for the Val Francilia - Aulnay-Sous-Bois study mandate. The contract will be concluded following the procedure initiated and will be for the performance of the following intellectual services, organized into several missions: establishment of a framework note, related environmental studies, impact studies, public inquiry file. It is planned to break down into slices (firm and optional)

The contract will be concluded following the procedure initiated and will have as its object the performance of the following intellectual services, organized into several missions:1. Establishment of a framework note2. Related environmental studies3. Impact assessments4. Public inquiry file. The missions are detailed in the technical and specific clauses