This regulation establishes an exemption from the requirement of a tolerance for residues of foramsulfuron on corn when applied/used as a herbicide. Aventis CropScience USA LP submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act, as amended by the Food Quality Protection Act of 1996, requesting tolerances for foramsulfuron on corn commodities. After review of the data submitted in support to the petition for tolerances, EPA determined that the toxicological profile of foramsulfuron supports a tolerance exemption for this chemical as no adverse effects were observed in the submitted toxicological studies regardless of the route of exposure. This regulation eliminates the need to establish a maximum permissible level for residues of foramsulfuron.