Earthworks
 | Earthworks are prohibited |
 | Earthworks require a permit and are restricted in depth |
 | High probability of encountering groundwater during earthworks : Earthworks require an authorization |
| Not subject to authorization |
| Earthworks are prohibited |
| Earthworks require a permit and are restricted in depth |
| High probability of encountering groundwater during earthworks : Earthworks require an authorization |
| Not subject to authorization |