To date, the new environmental attention focuses on proximate pollution. Several big French cities want to improve the consideration of environmental pressures in urban planning decisions to ensure harm reduction and thus make the city more attractive for residents. We propose to explain both experimental and modeling approach within the framework of a pilot rehabilitation project in a polluted area. This area named Concorde-Verhaeren concerns a sensitive district of the French city of Lille (North of France). This area is a site of interest in terms of its proximity to a section of the A25 high traffic highway and of the reason that this type of generalization is expected across the entire city.