No-observable Adverse Effect Levels (NOAELs) 90 day rat 90 day dog 1-year dog 2-year rat Lowest NOAEL NOAEL NOAEL NOAEL NOAEL (mg/kg/day) (mg/kg/day) (mg/kg/day) (mg/kg/day) (mg/kg/day) 2,4D 15 1 5 1 Acetochlor 80 10 2 10 2 Atrazine 7 6 5 3.5 1 Carbaryl 125 1 3.1 10 1 08n OSU 0re9onsa90 day rat NOAEL (mg/kg/day) 90 day dog NOAEL (mg/kg/day) 1-year dog NOAEL (mg/kg/day) 2-year rat NOAEL (mg/kg/day) Lowest NOAEL (mg/kg/day) 2,4 D 15 1 1 5 1 Acetochlor 80 10 2 10 2 Atrazine 1 6 5 3.5 1 Carbaryl 125 1 3.1 10 1 No-observable Adverse Effect Levels (NOAELs)