EN 
DE Sampling of motorway ditches and rainwater retention basins
In order to ensure regulated water drainage on the motorways and thus increase road safety, the Westfalen motorway authority carries out regular clearing work on the ditches and rainwater retention basins on the motorways. The cleared material is likely to be contaminated with pollutants typical of motorway traffic, such as material abrasion from vehicles or fuel leaks. In addition to possible pollution from heavy metals or [...]
