This regulation establishes tolerances for the residues of prometryn in or on celeriac, roots; celeriac, tops; cilantro, leaves; coriander, dried leaves; leaf petioles subgroup 4B; okra; parsley, leaves; parsley, dried leaves; and increases the tolerance level for carrot, root. Additionally, the tolerance for celery is removed since it is included in the leafy petioles subgroup 4B and the regional tolerance for parsley leaves is removed since it is superseded by the tolerance established in this action. Interregional Research Project No. 4 (IR-4) requested these tolerances under the Federal Food, Drug, and Cosmetic Act (FFDCA).