Table 5 Risk assessment and RQ comparison for the approach by EFSA [14] and AMiRA

Fish

Acceptable, FOCUS step 3

FOCUS step 3:

RQ_a.s. = 0.8269 < 1

(based on single a.s. risk assessment)

Acceptable, FOCUS step 4 (5 m spray buffer)

FOCUS step 3:

RQ_mix = 1.0012 > 1

FOCUS step 4 (5 m):

RQ_mix = 0.6502 < 1

Daphnids

Acceptable, FOCUS step 4 (10 m spray buffer + 10 m veg. strip)

FOCUS step 4 (10 m + 10 m):

RQ_a.s. = 0.5857 < 1

(based on single a.s. risk assessment)

Acceptable, FOCUS step 4 (10 m spray buffer + 10 m veg. strip)

FOCUS step 4 (10 m + 10 m):

RQ_mix = 0.5887 < 1

Algae

Not acceptable, FOCUS step 4 (all buffer mitigations)

FOCUS step 4 (all mitig.):

RQ_mix = 5.9583 > 1^a

(based on measured mixture toxicity)

Not acceptable, FOCUS step 4 (all buffer mitigations)

FOCUS step 4 (all mitig.):

RQ_mix = 4.5831 > 1^a

Lemna

Acceptable, FOCUS step 4 (20 m spray buffer + 20 m veg. strip)

FOCUS step 4 (10 m + 10 m):

RQ_mix = 1.0379 > 1

FOCUS step 4 (20 m + 20 m):

RQ_mix = 0.5438 < 1

(based on measured mixture toxicity)

Acceptable, FOCUS step 4 (10 m spray buffer + 10 m veg. strip)

FOCUS step 4 (10 m + 10 m):

RQ_mix = 0.5693 < 1