Brownfield sites are built-up or undeveloped areas that have been abandoned for several years and were formerly used for industrial, craft or commercial activities (former mines, gasworks, chemical and petrochemical plants, unauthorized dumps, former military sites, disused service stations, etc.).
These industrial wastelands are often located in strategic locations, and their rehabilitation has become an economic challenge and a solution for the future of sustainable cities, in order to contain the explosion of urban sprawl. In fact, these industrial wastelands are generally located in the first peripheral belt of cities, hence the importance of re-exploiting these areas.
These derelict areas often present pollution problems(soil pollution, surface and groundwater, soil gas and asbestos) due to their heavy industrial past. The decontamination of brownfieldsites is therefore a major redevelopment challenge. The first step in decontaminating these land reservoirs is to carry out an in-depth "INFO & DIAG" environmental diagnosis in accordance with standard NFX 31 620-2. The aim of this diagnosis is to identify potential sources of pollution, the media impacted (soil, water and soil gas or ambient air) and to measure pollutant levels. At the end of this diagnostic phase, a management plan and a design plan for the works will be drawn up to determine a remediation methodology (in situ - on site - off site) according to the type(s) of pollution and the medium(s) concerned. Finally, a certificate of compatibility with future use (PC16-5 or 6) in accordance with standard NFX 31-620-5 will be required when applying for a building permit. Letourneur Conseil can help you with all these studies.