Table 18.

Assessment factors to apply to derive the Phase IIC PNEC_R;sed for sediment‐dwelling freshwater organisms based on the available ecotoxicity data set

Available data	AF	Remark
One long‐term EC10/NOEC (Chironomus)	100	Sediment‐Water Chironomid Toxicity Test currently is a data requirement
Two long‐term EC10/NOEC (Chironomus and Lumbriculus)	50	–
Three long‐term EC10/NOECs (Table 17)	10

EC₁₀: Concentration of the additive causing effect on 10% of the population; NOEC: no observed effects concentration.