This regulation establishes an exemption from the requirement of a tolerance for residues of Bacillus thuringiensis strain EX 297512, when used as an inert ingredient (diluent and/or carrier) in pesticide formulations applied for seed treatment purposes. BASF Corporation, submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting establishment of an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of B. thuringiensis strain EX 297512, when used in accordance with the terms of this exemption.