EPA finalized regulatory changes that address several key issues in the Polychlorinated Biphenyls Cleanup and Disposal program under the Toxic Substances Control Act. This final rule expands the available options for extraction and determinative methods used to characterize and verify the cleanup of PCB waste, which would greatly reduce the amount of solvent used in PCB extraction processes. EPA also finalized more flexible provisions to facilitate cleanup of waste during emergencies (e.g., hurricanes or floods), strengthened protections for the performance-based disposal option for PCB remediation waste, and made other updates to the regulations. EPA's revisions are based on the emergence of new science and information about PCBs, the advancement of analytical methods and technology, and requests from the regulated community to address concerns and improve the clarity of the regulations.