| Pollution sources | Radius (km) | Main pollutant |
| Sites of national interest (SIN) | 2 | Site-specific pollutant, typically industrial waste |
| Cement plants | 5 | Dioxin, PCBs, PAHs, heavy metals, radionuclides |
| Foundries | 5 | |
| Incinerators, waste-to-energy plants | 5 | |
| Petrochemical plants including refineries | 5 | |
| Nuclear sites | 2 | |
| Treatment and coating of metals industries | 3 | Heavy metal, organic solvents |
| Landfills sites | 2 | |
| Waste treatment sites | 3 | |
| Chemical industries | 3 | |
| Thermal power plants (natural gas) | 5 | Heavy metal and other non-individually specifiable |
| Roads of major communication and urban areas | 0.25 | |
| Commercial-industrial areas | 0.25 |