Summary of August 2021 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 August 31, 2021. 

Updates to the aquatic life benchmarks include the following newly registered pesticides and their degradates (new registrations):

• Broflanilide;
• Fluindapyr; 
• Inpyrfluxam;
• Pethoxamid;
• Picarbutrazox;
• Pyridate;
• Tetraniliprole (and Tetraniliprole degradates “BCS-CR60014”, “BCS-CY28897”, “BCS-CU81055”, “BCS-CT30672”, “BCS-CT30673”, “BCS-CY28906”, “BCS-CY28900”, “BCS-CR74541”, and “Tetraniliprole Quinazolinone”);
• Tiafenacil; and
• Trifludimoxazin (and Trifludimoxazin degradates “M850H001”, “M850H002”, and “M850H004”)

Updates to the aquatic life benchmarks include new values for the following previously registered pesticides and their degradates undergoing registration review (updated registrations):

• 1,2-Benzisothiazol-3(2H)-one, 2-butyl (BBIT);
• 1,2-Benzisothiazolin-3-one (BIT);
• 1-Naphthalene Acetic Acid (NAA);
• 1-Naphthalene Acetic Acid Ammonium Salt;
• 1-Naphthalene Acetic Acid Potassium Salt;
• 1-Naphthaleneacetamide (NAD);
• 1-Naphthaleneacetic Acid Ethyl Ester (NAA Ester);
• 4-Aminopyridine;
• Alpha-Cypermethrin;
• Amicarbazone;
• Beta-Cyfluthrin;
• Beta-Cypermethrin;
• Bifenthrin;
• Cetylpyridinium Chloride;
• Chlorantraniliprole (and Chlorantraniliprole degradates “IN-ECD73”, “IN-EQW78”, “IN-F6L99”, “IN-F9N04”, “IN-GAZ70”, “IN-LBA22-002”, “IN-LBA23-000”, and “IN-LBA24-002”);
• Chlorothalonil;
• Cycloate;
• Cyfluthrin;
• Cypermethrin;
• DCOIT;
• Deltamethrin;
• Dichlorvos (DDVP);
• Difenoconazole degradates “1,2,4-Triazole”, and “Triazole Acetic Acid”;
• Dimethenamid;
• Diuron (and Diuron degradates “DCPMU”, and “mCPDMU”);
• Endothall (“Acid”, “Dipotassium Salt”, and “Mono N,N-dimethylalkylamine salt”);
• Esfenvalerate;
• Ethofumesate (and Ethofumesate degradates “CU88901”, “Ethofumesate Acetic Acid”, and “NC8493”);
• Famoxadone (and Famoxadone degradates “IN-H3310-2”, “IN-JL856”, “IN-JS940”, “IN-KF015”, “IN-KZ007”, “IN-MN467”, “IN-MN468”, and “IN-MN968”);
• Fenbuconazole;
• Fenpropathrin;
• Fipronil (and Fipronil degradates “Fipronil Desulfinyl (MB46513)”, “Fipronil Sulfide (MB45950)”, and “Fipronil Sulfone (MB46136)”);
• Fluometuron;
• Fluoxastrobin;
• Flutriafol;
• Folpet (and Folpet degradate “Phthalimide”);
• Forchlorfenuron;
• Gamma-cyhalothrin;
• Halohydantoins (and Halohydantoins degradate “DMH”);
• Ipconazole;
• Iprodione;
• Isoxaflutole (and Isoxaflutole degradate “RPA203328”);
• Lambda-cyhalothrin;
• Mesotrione;
• Metaldehyde;
• Metconazole;
• MIT/CMIT;
• Monosodium Methane Arsonate (MSMA);
• Naled;
• Napropamide;
• Nicarbazin degradate HDP;
• Nicarbazin DNC;
• Novaluron (and Novaluron degradates “Chloroaniline”, and “Chlorphenyl Urea”);
• Octhilinone, 2-n- Octyl-4-isothiazoline-3-one (OIT);
• Oxadiazon;
• Permethrin;
• Phorate (and Phorate degradates “Phorate Sulfone”, and “Phorate Sulfoxide”);
• Phosmet (and Phosmet degradate “Phosmet Oxon”);
• Picloram Potassium Salt;
• Picloram TIPA Salt;
• Polixetonium Chloride;
• Propargite;
• Propiconazole;
• Prothioconazole (and Prothioconazole degradates “Prothioconazole-desthio”, and “Prothioconazole-S-methyl”);
• Pyrethrins;
• Pyridalyl;
• Pyrimethanil degradate 2‐amino‐4,6‐dimethylpyrimidine;
• Sodium Chlorate;
• Sodium Pyrithione;
• Spiromesifen (and Spiromesifen degradate “Spiromesifen-enol”);
• Spirotetramat;
• Strychnine;
• Telone (and Telone degradates “Telone (1,3-D) degradate 3-Chloroacrylic Acid”, and “Telone (1,3-D) degradate 3-Chloroallyl Alcohol”);
• Tembotrione;
• Tetraconazole;
• Thiencarbazone-methyl;
• Thiophanate methyl degradate Carbendazim (HOE 017411);
• Tolfenpyrad;
• Trichlorfon;
• Zinc Pyrithione; and
• Ziram

For more information on these updates, please contact D. Ethan Harwood (harwood.douglas@epa.gov, 703-347-0255).