This regulation amends tolerances for residues of rimsulfuron in or on corn, field, forage and corn, field, stover and establishes tolerances in or on grain, aspirated fractions; soybean, forage; soybean, hay; soybean, hulls; and soybean, seed. E.I du Pont de Nemours and Company requested these tolerances under the Federal Food, Drug, and Cosmetic Act (FFDCA).