This regulation establishes exemptions from the requirement of a tolerance for residues of 1,3-propanediol (CAS Reg. No. 504-63-2) when used as an inert ingredient solvent, co-solvent, diluent, or freeze-point depressant in pesticide formulations applied to growing crops and to raw agricultural crops after harvest and in antimicrobial pesticide formulations applied to food-contact surfaces in public eating places, dairy-processing equipment, and food-processing equipment and utensils. DuPont Tate & Lyle BioProducts submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting establishment of exemptions from the requirement of a tolerance. These regulations eliminate the need to establish a maximum permissible level for residues of 1,3-propanediol.