Table 3.

Groundwater

Compound (name and/or code)	Mobility in soil	> 0.1 μg/L at 1 m depth for the representative usesa	Pesticidal activity	Toxicological relevance	Ecotoxicological activity
Terbuthylazine	Medium mobility 191–318 mL/g	FOCUS: No Lysimeter: No The trigger value of 0.1 μg/L was not exceeded in the 8 lysimeters available	Yes	Yes	A high risk to the aquatic environment was indicated in the risk assessment for surface water
Desethyl‐terbuthylazine MT1	High to very high mobility 44–122 mL/g	FOCUS: Yes The number of FOCUS scenarios exceeding the trigger value of 0.1 μg/L was 4, (0.163–0.4 μg/L) Lysimeter: No The trigger value of 0.1 μg/L was not exceeded in the 8 lysimeters available	Yes, so this groundwater metabolite is considered relevant	From the consumer exposure assessment point of view, the reference values of the parent are applicable to this metabolite. Intakes for MT1+MT13+MT14 account for 117% of the ADI (infant). Therefore, MT1 is considered a relevant metabolite in groundwater	The risk to aquatic organisms in surface water was assessed as low
Hydroxy‐terbuthylazine MT13	Medium mobility 104–280 mL/g	FOCUS: Yes The number of FOCUS scenarios exceeding the trigger values of 0.1, 0.75 and 10 μg/L was 8, 8 and 6, respectively Lysimeter: No The trigger value of 0.1 μg/L was not exceeded in the 6 lysimeters available	No	From the consumer exposure assessment point of view, the reference values of the parent are applicable to this metabolite. Intakes for MT1+MT13+MT14 account for 117% of the ADI (infant). Therefore, MT13 is considered a relevant metabolite in groundwater	The risk to aquatic organisms in surface water was assessed as low
Desethyl‐hydroxy‐terbuthylazine MT14	Low to very high mobility 22–1,010 mL/g	FOCUS: Yes The number of FOCUS scenarios exceeding the trigger values of 0.1, 0.75 and 10 μg/L was 8, 7 and 0, respectively Lysimeter: Yes The trigger value of 0.1 μg/L was exceeded in 1 lysimeter and in 42 samples in field leaching study, concentrations up to 2.65 μg/L	No	From the consumer exposure assessment point of view, the reference values of the parent are applicable to this metabolite. Intakes for MT1+MT13+MT14 account for 117% of the ADI (infant). Therefore, MT14 is considered a relevant metabolite in groundwater	The risk to aquatic organisms in surface water was assessed as low
LM1 MT24	Very high mobility 30–37 mL/g	FOCUS: No Lysimeter: Yes The trigger value of 0.1 μg/L was exceeded in 3 of 5 lysimeter	No, based on the argumentation that it is a breakdown product of LM5 that did not exhibit pesticidal activity	No No genotoxic potential	The risk to aquatic organisms in surface water was assessed as low
LM2 MT28	Very high mobility 6–13 mL/g pH dependent	FOCUS: Yes The number of FOCUS scenarios exceeding the trigger values of 0.1, 0.75 and 10 μg/L was 8, 7 and 0, respectively Lysimeter: Yes The trigger value of 0.1 μg/L was exceeded in 3 of 5 lysimeters	No	No genotoxic potential Reference values for consumer risk assessment could not be derived	The risk to aquatic organisms in surface water was assessed as low
LM3	Very high mobility 3.3–4.2 mL/g	FOCUS: Yes The number of FOCUS scenarios exceeding the trigger values of 0.1, 0.75 and 10 μg/L was 8, 7 and 0, respectively Lysimeter: Yes The trigger value of 0.1 μg/L was exceeded in all 5 lysimeters	No	No genotoxic potential Reference values for consumer risk assessment could not be derived	The risk to aquatic organisms in surface water was assessed as low
LM4	Very high mobility 4–15 mL/g	FOCUS: Yes The number of FOCUS scenarios exceeding the trigger values of 0.1, 0.75 and 10 μg/L was 8, 8 and 1, respectively Lysimeter: Yes The trigger value of 0.1 μg/L was exceeded in all 5 lysimeters	No	No genotoxic potential Reference values for consumer risk assessment could not be derived	The risk to aquatic organisms in surface water was assessed as low
LM5 MT23	Very high mobility 13–19 mL/g	FOCUS: Yes The number of FOCUS scenarios exceeding the trigger values of 0.1, 0.75 and 10 μg/L was 8, 7 and 0, respectively Lysimeter: Yes The trigger value of 0.1 μg/L was exceeded in all 5 lysimeters	No	No genotoxic potential Reference values for consumer risk assessment could not be derived	The risk to aquatic organisms in surface water was assessed as low
LM6	Very high mobility 13–14 mL/g	FOCUS: Yes The number of FOCUS scenarios exceeding the trigger values of 0.1, 0.75 and 10 μg/L was 8, 8 and 0, respectively Lysimeter: Yes The trigger value of 0.1 μg/L was exceeded in all 5 lysimeters	No	No genotoxic potential Reference values for consumer risk assessment could not be derived	The risk to aquatic organisms in surface water was assessed as low

^aAt least one FOCUS scenario or a relevant lysimeter.