Article 21a 1.

A value of 10 μg/kg shall apply to fly ashes from biomass units for heat and power production containing or contaminated by polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/PCDF) and dioxin-like polychlorinated biphenyl (dl-PCBs) as listed in Annex IV until 30 December 2023. The value of 5 μg/kg provided for in Annex IV shall apply to fly ashes from biomass units for heat and power production from 31 December 2023.