The Rouen Flaubert district is a major urban project on the scale of the Rouen Normandy Metropolis under development aimed at extending the downtown Rouennais to the west of the city, in a logic of reconquest on brownfields. The site is a space of 90 hectares to be reconquered, shared between the city center, the Seine and the port. Its transformation into a central urban district is based on the realisation of the final road accesses to the Flaubert Bridge. The Rouen Flaubert district consists of two areas of intervention with two types of project management: — The development project of the banks of the Seine and the Presqu’île Rollet (22 hectares) which is the subject of a mandate of studies and works granted to the SPL Rouen Normandie Aménagement. — The Zone d’Aménagement Concertée (ZAC) Rouen Flaubert (69 hectares), created on June 23, 2014 by deliberation of the community council of the Rouen Normandie Metropolis. It is the subject of a concession for the development of the Metropolis to the SPL Rouen Normandie Aménagement for the realisation of the operational studies, for the works and the marketing of the site’s land. The platform is a plot temporarily developed within the technical district that should allow an overall optimisation of the management of the waste during the first years of development of the Rouen Flaubert district and facilitate the reuse and traceability of the materials of the site.