Summary of September 2022 Updates to Aquatic Life Benchmarks Table

EPA updated Aquatic Life Benchmarks table (view Aquatic Life Benchmarks and Ecological Risk Assessments for Registered Pesticides) as of September 29, 2022.  As of this date, there are a total of 759 chemicals (parent compound or degradate) listed in the table. 

Updates to the Aquatic Life Benchmarks include the following newly registered pesticides and their degradates (new registrations):

• Benzyl Benzoate (and Benzyl Benzoate degradates “Benzoic Acid” and “Sodium Benzoate”);
• Buprofezin; 
• Butoxypolypropylene glycol; 
• Copper 8 Quinolinolate; 
• TCMTB (and TCMTB degradate “2-MBT”); 
• 1,3 PAD; 
• Ipflufenoquin; 
• Cyflufenamid (and Cyflufenamid degradates “149-F”, “149-F1”, “149-F6”, and “149-F11”);
• Ferbam; 
• Fluopyram; 
• Oxycarboxin; 
• Fenazaquin (and Fenazaquin degradates “2-(4-Tert-Butylphenyl) Ethanol”, and “Fenazquin propionic acid”); 
• Flumetralin; 
• Magnesium Chloride; 
• Metrafenone (and Metrafenone degradates “CL 375816”, and “CL 4084564”); 
• MGK-264; and,
• Triticonazole

Updates to the Aquatic Life Benchmarks include new values for the following previously registered pesticides and their degradates undergoing registration review (updated registrations):

• Nabam (and Nabam degradates “ethylene thiourea (ETU)” and “ethylene urea (EU)”*);
• Cyclaniliprole (and Cyclaniliprole degradates “NK-1375”, “NU-356”, and “TJ-537”); 
• Fluensulfone; 
• Thiram; 
• Rotenone; 
• Pyroxasulfone; 
• Topramezone; 
• Sodium fluoroacetate; 
• Sodium cyanide; 
• Coumaphos; 
• Acequinocyl; 
• Acetochlor (and Acetochlor degradate “Ethanesulfonic acid (ESA)”); 
• Aminocyclopyrachlor acid; 
• Aminocyclopyrachlor ester; 
• Aminopyralid; 
• Carbaryl; 
• Carboxin (and Carboxin degradate “Carboxin sulfoxide”*); 
• Chlorflurenol Methyl Ester (CME); 
• Chlormequat chloride; 
• Chlorpyrifos; 
• Clopyralid; 
• Difenoconazole; 
• Diothiopyr; 
• Dodine; 
• Etridiazole (and Etridiazole degradate “3-DCMT”); 
• Fenbuconazole; 
• Fenamidone (and Fenamidone degradates “RPA-410193”, “RPA-412636”, “RPA-412708”, and “RPA-413255”); 
• Fenpyroximate (and Fenpyroximate degradate “M-3 ((E)-4-[(1,3-dimethyl-5-phenoxypyrazol-4-yl)methylene-aminooxy-methyl]-benzoic acid”); 
• Flonicamid; 
• Flumioxazin (and Flumioxazin degradates “482-HA”*, “APF”*, “THPA-2Na”*); 
• Formetanate HCl; 
• Sodium Chlorate; 
• Sodium Metabisulfite; 
• Sulfur Dioxide; 
• Mandipropamid (and Mandipropamid degradate “CGA 380778”*); 
• MCPB (and MCPB degradate “MCPB sodium salt”); 
• Metam sodium and Metam potassium degradate “Methyl isothiocyanate (MITC)”; 
• Metolachlor (and Metolachlor degradates “Metolachlor ethane sulfonic acid”, and “Metolachlor oxanilic acid”); 
• S-Metolachlor; 
• Myclobutanil (and Myclobutanil degradates “1,2,4-triazole”*, and “1,2,4-triazole acetic acid”*);
• Oxyfluorfen; 
• Paraquat Dichloride; 
• Piperonyl Butoxide; 
• Prometon; 
• Propanil (and Propanil degradate “3,4-Dichloroaniline (3,4-DCA)”*); 
• Propazine; 
• Propylene Oxide; 
• Pyrasulfotole; 
• Spirodiclofen (and Spirodiclofen degradate “BAJ 2740-enol”*); 
• Tebuconazole; 
• Terbacil; 
• Triallate; 
• Triclopyr Acid; 
• Triclopyr Butoxyethyl Ester (BEE); 
• Triclopyr degradate TCP; 
• Triclopyr Triethylamine salt (TEA); and, 
• Triphenyltin Hydroxide (TPTH)  

*Indicates a newly added degradate benchmark from an updated registration

For more information on these updates, please contact D. Ethan Harwood (harwood.douglas@epa.gov, 202-566-1829).