This rule extends a time-limited tolerance for residues of the insecticide tebufenozide and its metabolites in or on non-brassica leafy vegetables (Crop Group 4) at 5.0 part per million (ppm), brassica (cole) leafy vegetables (Crop Group 5) at 5.0 ppm, and turnip tops at 5.0 ppm for an additional 1-year period, to February 28, 1999. This action is in response to EPA's granting of an emergency exemption under section 18 of the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) authorizing use of the pesticide on leafy vegetables, brassica leafy vegetables, and turnip tops. Section 408(l)(6) of the Federal Food, Drug, and Cosmetic Act (FFDCA) requires EPA to establish a time- limited tolerance or exemption from the requirement for a tolerance for pesticide chemical residues in food that will result from the use of a pesticide under an emergency exemption granted by EPA under section 18 of FIFRA.