This regulation establishes exemptions from the requirement of a tolerance for residues of isobutyl acetate (CAS Reg. No. 110-19-0) and isobutyric acid (CAS Reg. No. 79-31-2) when used as inert ingredients (solvent) in pesticide formulations applied to growing crops and raw agricultural commodities after harvest. Technology Sciences Group Inc. on behalf of Jeneil Biosurfactant Company submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting establishment of these exemptions from the requirement of a tolerance. This regulation eliminates the need to establish maximum permissible levels for residues of isobutyl acetate and isobutyric acid.