The Pipeline and Hazardous Materials Safety Administration extended the comment period by 60 days for the “Hazardous Materials: Modernizing Regulations to Improve Safety and Efficiency (HM-265A)" advanced notice of proposed rulemaking.

EPA announced the availability of its proposed interim registration review decision for the pesticide tetrachlorvinphos.

United States v. Apex Building Co., Inc., No. 23-cv-7838 (S.D.N.Y. Sept. 5, 2023). Under a proposed consent decree, a settling TSCA defendant that conducted unlawful renovations work must perform injunctive relief and pay a $606,706 civil penalty.

EPA granted emergency exemptions under FIFRA for the use of certain pesticides to control pest outbreaks to Arizona, Hawaii, Michigan, Minnesota, and North Dakota, and denied emergency exemptions to Colorado and Nebraska.

EPA approved revisions to the Navajo Nation's primacy program under the SDWA that adopted regulations effectuating the federal Stage 2 Disinfectants and Disinfection Byproducts Rule and the Ground Water Rule.

EPA approved revisions to Guam's primacy program under the SDWA that adopted regulations effectuating the federal Revised Total Coliform Rule.

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 supplemented proposed revisions to Louisiana's Underground Injection Control (UIC) Program to approve a revision to the state's SDWA §1422 UIC program to include Class VI injection well primary enforcement responsibility.

EPA approved revisions to Nevada's state primacy program under the SDWA that adopted regulations effectuating the Federal Stage 1 Disinfectants and Disinfection Byproducts Rule.

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