This regulation establishes an exemption from the requirement of a tolerance for residues of Didecyl dimethyl ammonium chloride (DDAC) in or on broccoli grown from treated seeds when applied by immersion. Pace Chemicals Ltd. submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA) requesting an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of DDAC in or on broccoli seed.