This regulation establishes a temporary exemption from the requirement of a tolerance for residues of the tobacco mild green mosaic tobamovirus (TMGMV) on grass and grass hay when applied/used as a bioherbicide against the weed tropical soda apple. Interregional Research Project Number 4 (IR4), on behalf of BioProdex, 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 the temporary tolerance exemption. This regulation eliminates the need to establish a maximum permissible level for residues of TMGMV. The temporary tolerance exemption expires on June 30, 2009.