EPA finalized several amendments to the PCB regulations, including an expanded set of extraction and determinative methods that can be used to characterize and verify the cleanup of PCBs waste; amendment of the performance-based disposal option for PCB remediation waste; removal of the provision allowing PCB bulk product waste to be disposed of as roadbed material; and the addition of more flexible provisions for cleanup and disposal of waste generated by spills that occur during emergency situations.

EPA established tolerances for residues of the herbicide imazapic in or on rice, bran and rice, grain.

United States v. Belle Fourche Pipeline Co., No. 22-00089-DLH-CRH and United States v. Bridger Pipeline LLC, No. 22-00043-BLG-SPW (D.N.D. July 31, 2023). Under a proposed partial consent decree, settling CWA defendants must perform injunctive relief and pay a $12,500,000 civil penalty for violations arising from pipeline failures that resulted in discharges of oil into an unnamed tributary to Ash Coulee Creek and the Yellowstone River.

EPA proposed to lower the dust-lead hazard standards from ten micrograms per square foot (µg/ft2) and 100 µg/ft2 for floors and window sills to any reportable level as analyzed by a laboratory recognized by the Agency's National Lead Laboratory Accreditation Program in accordance with a 2021 Ninth Circuit opinion.

EPA proposed to address the unreasonable risk of injury to human health presented by carbon tetrachloride under its conditions of use as documented in EPA’s 2020 Risk Evaluation for Carbon Tetrachloride and 2022 Revised Unreasonable Risk Determination for Carbon Tetrachloride pursuant to the TSCA.

EPA seeks input on the Safer Choice and Design for the Environment programs’ potential expansion of their certification to new product categories.

EPA announced the availability of and seeks comment on a draft revision to the risk determination for 1,4-dioxane following a risk evaluation issued under TSCA.

EPA finalized reporting and recordkeeping requirements for asbestos under TSCA.

EPA announced a 60-day public comment period associated with the release of the draft IRIS Toxicological Review of Perfluorohexane Sulfonate (PFHxS) and Related Salts.

EPA added a diisononyl phthalate category to the list of toxic chemicals subject to the reporting requirements under EPCRA and the Pollution Prevention Act.