{"abstract":"The U.S. Environmental Protection Agency (EPA) is announcing the availability of Acute Freshwater Aquatic Life Screening Values for 6PPD (N-(1,3-Dimethylbutyl)-N'-phenyl-p-phenylenediamine) and its transformation product 6PPD-quinone (6PPD-q; N-(1,3-Dimethylbutyl)-N'- phenyl-p-phenylenediamine quinone). The EPA developed these screening values as information under Clean Water Act (CWA) section 304(a)(2)(B) on factors for the protection of aquatic life. States and authorized Tribes may consider these screening values in their water quality protection programs. The screening values for acute exposures to 6PPD and 6PPD-q in freshwater are 8,900 nanograms per liter (ng/L) and 11 ng/L, respectively. Consistent with CWA section 304(a)(2), the EPA expects to update these screening values from time to time as new information becomes available. This announcement is in accordance with CWA section 304(a)(3), which directs the EPA to publish information developed under 304(a)(2) in the Federal Register and make it available to States, authorized Tribes, and the public.","action":"Notice of availability.","agencies":[{"raw_name":"ENVIRONMENTAL PROTECTION AGENCY","name":"Environmental Protection Agency","id":145,"url":"https://www.federalregister.gov/agencies/environmental-protection-agency","json_url":"https://www.federalregister.gov/api/v1/agencies/145","parent_id":null,"slug":"environmental-protection-agency"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2024/06/13/2024-13009.html","cfr_references":[],"citation":"89 FR 50325","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":null,"disposition_notes":null,"docket_ids":["FRL-11976-01-OW"],"dockets":[{"supporting_documents":[{"title":"Adequacy Status of the Cleveland/Akron, Ohio and the Columbus, Ohio Submitted 8-Hour Ozone Redesignation and Maintenance Plans for Transportation Conformity Purposes","document_id":"EPA_FRDOC_0001-6733"},{"title":"DELETE","document_id":"EPA_FRDOC_0001-6642"},{"title":"Agency Information Collection Activities; 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