This regulation establishes tolerances for residues of ethalfluralin in or on dill, dried leaves; dill, fresh leaves; mustard, seed; potato; and rapeseed, seed. It also removes the current tolerance for residues of ethalfluralin on canola seed since residues on canola are covered by the rapeseed tolerance, thus making the canola tolerance unnecessary. Interregional Research Project Number 4 (IR-4) requested the new tolerances and removal of the canola tolerance under the Federal Food, Drug, and Cosmetic Act (FFDCA).