Any substance, liquid or solid solutions and mixtures (such as preparations and wastes), which cannot be classified in the other classes and that meet the criteria for substances pollutant to the aquatic environment as described in the European Agreement concerning the international carriage of dangerous goods by road (ADR), are to be assigned as Class 9 - miscellaneous dangerous goods "Environmentally hazardous substance, liquid, n.o.s." or "Environmentally hazardous substance, solid, n.o.s.".

This variation does only apply in case of connecting road transport to, through or from the Netherlands. This variation does not apply to transit and overflights.