Brussels-Capital Region : this directive has as an aim the prevention of the major accidents implying of dangerous substances and the limitation of their consequences for the man and the environment, in order to ensure in a coherent and effective way in all the country of the high levels of protection. The geographical data file SEVESO consists of several classes of objects which make it possible to locate all the SEVESO sites on the territory of the area of Brussels.

Brussels-Capital Region : land cover refers to the physical and biological cover of the earth's surface, including artificial surfaces, agricultural areas, forests, semi-natural areas, wetlands, water bodies. The entity "Green Block" (or green area) identifies the footprint of vegetated amenity areas(lawn, trees, possibly planted with flowers and ornamental trees and bushes, and often lined ponds and paths). Green areas have been designed on the basis of various plans (photogrammetric surveys, detailed maps, maps of towns, ...). They have a heterogeneous precision because of the diversity of origin. The entity "Green Block" (or green area) is represented using three different types: - GB-A: grassed (some grassy berm plants or trees) bands; - GB-B: parks (water parks located in these areas are not excluded); - GB-F: forests or wood (islets of the Soignes Forest located in the Brussels Region). The entity "Water Block" (or water area) locates and identifies various water bodies in the territory of the Brussels-Capital Region (channel, ponds, Senne river, ...). We distinguish : 1. water areas located at [0] which are visible from the air (abbreviated WB-0); 2. water areas (for the channel) located at [-] on the road (invisible from the sky) (abbreviated WB-M).

Brussels-Capital Region : Big industrial installations that are reported under the framework of directive 2010/75/EU of 24 november 2010 on industrial emissions (« IED »). This directive aims to prevent and reduce, with an integrated approach, air, water and soil pollution that comes from industrial installations. It gathers different directives focussing on industrial emissions. The dataset consists of the reported installations, but excluding dry cleaning services.

Brussels-Capital Region : Brussels-Capital statistical areas are grouped to form the districts of monitoring. Monitoring the neighborhood is an urban observation tool to help track and understand the evolution of Brussels districts in different aspects (demographic, social, health, economy, housing, mobility, quality of life, participation, ... ) to improve the efficiency of urban policy and help guide public and private investment in urban renewal ...