This regulation establishes an exemption from the requirement of a tolerance for residues of the biochemical pesticide 1-octanol in or on root and tuber vegetables. D-I-1-4, Inc., a division of 1,4- Group, Inc., submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting an amendment to the exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of 1-octanol in or on root and tuber vegetables.