Today's final rule eliminates drafting errors and ambiguities in the used oil management standards. Specifically, this rule clarifies when used oil contaminated with polychlorinated biphenyls (PCBs) is regulated under the RCRA used oil management standards and when it is not; that mixtures of conditionally exempt small quantity generator (CESQG) waste and used oil are subject to the RCRA used oil management standards irrespective of how that mixture is to be recycled; and that the initial marketer of used oil that meets the used oil fuel specification need only keep a record of a shipment of used oil to the facility to which the initial marketer delivers the used oil.