This regulation establishes an extension of time-limited interim tolerances for the combined residues of the insecticide tetrachlorvinphos [(Z)-2-chloro-1-(2,4,5-trichlorophenyl) vinyl dimethyl phosphate], including its metabolites, 1-(2,4,5- trichlorophenyl)-ethanol (free and conjugated forms), 2,4,5- trichloroacetophenone, and 1-(2,4,5-trichlorophenyl)-ethanediol, in or on multiple commodities which will be identified later in this document, under the Federal Food, Drug, and Cosmetic Act (FFDCA). The time-limited tolerances expire on March 18, 2013.