This regulation establishes an exemption from the requirement of a tolerance for residues in or on plant commodities of phosphomannose isomerase and the genetic material necessary for its production in all plants when applied/used as plant-incorporated protectant inert ingredients. Syngenta Seeds, Inc. submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), as amended by the Food Quality Protection Act of 1996 (FQPA), requesting an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues in or on all plant commodities of phosphomannose isomerase and the genetic material necessary for its production in all plants.