This regulation establishes an exemption from the requirement of a tolerance for residues of the biochemical pesticide, 3-decen-2- one, in or on potatoes when applied as a postharvest potato sprout inhibitor and used in accordance with label directions and good agricultural practices. On behalf of AMVAC Chemical Corporation (AMVAC), Technology Sciences Group, Inc. (TSG) submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of 3-decen-2-one under the FFDCA.