This regulation extends time-limited tolerances for combined residues of the herbicide carfentrazone-ethyl and its metabolites in or on rice, grain at 0.1 part per million (ppm) and rice, straw at 1.0 ppm for an additional 14-month period. These tolerances will expire and are revoked on December 31, 2000. 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 rice. 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 FIFRA section 18.