Table 25.

Elements of the exposure assessment goal for all life stages of amphibian populations (SPG: population persistence) when they are in the aquatic environment (in‐field, plus edge‐of‐field)

Element	Description	Remarks
EREQ	See Table 26
Temporal dimension of EREQ	See Table 26
Spatial unit (SU), type and size (if relevant)	Ponds with surface area of 10 m2 to 2 ha	Implicitly averaging over whole surface area of pond is considered acceptable
Statistical population of SUs	All ponds in‐field or edge‐of‐field of treated agricultural fields in area of use of substance
Multiyear temporal statistical population of EREQ values for one spatial unit	Series of tens of years of annual maxima of time‐weighted average concentration in pond water in years of treatment	Consider only concentration durations and periods that are relevant, i.e. for AMA (21 days) and LAGDA (NF 8–10 up to 10 weeks after NF 62, i.e. approximately 4 months) in their relevant periods (spring/early summer)
Desired spatio‐temporal percentile of the statistical population of EREQ values	Overall 90th percentile of the statistical population of each EREQ	Percentile can easily be changed if needed