Division 3.4.1.1 Additives for terrestrial animals

When excreta from livestock are applied on land, the use of feed additives can lead to contamination of soil, ground water, and surface water (via drainage and run-off).

The worst case PEC for soil (PEC_soil) would arise considering all excreted compounds being spread on land. If the PEC_soil (default: 5 cm depth) is less than 10 μg/kg, no further assessment is required.

If the PEC for contamination of groundwater (PEC_gw) is less than 0,1 μg/l, no Phase II assessment of the environmental impact of the additive on groundwater is necessary.