This regulation establishes a time-limited tolerance for residues of triflumizole (1-(1-((4-chloro-2-(trifluoromethyl) phenyl)imino)-2-propoxyethyl)-1H-imidazole) and its metabolites containing the 4-chloro-2-trifluoromethylaniline moiety, calculated as the parent in or on hazelnuts, or filberts (EPA preferred term). This action is in response to EPA's granting of an emergency exemption under section 18 of the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) authorizing use of the pesticide on filberts. This regulation establishes a maximum permissible level for residues of triflumizole in this food commodity. The tolerance will expire and is revoked on June 30, 2004.