Table 13.

Tier‐2B risk assessment procedure for Organophosphate A. If the PEC:RAC ratio is < 1, then the environmental risk is considered low

Scenario	Acute risk assessment
	PECsw;max (μg/L)	Tier‐2B RACsw;ac (μg/L)	PECsw;max:RACsw;ac ratio
A	0.035	0.0132–0.0263	1.33–2.65
B	0.034	0.0132–0.0263	1.29–2.58
C	0.031	0.0132–0.0263	1.18–2.35
D	0.030	0.0132–0.0263	1.14–2.27
E	0.029	0.0132–0.0263	1.10–2.20
F	0.029	0.0132–0.0263	1.10–2.20