This regulation establishes a tolerance for combinedresidues of carboxin (5,6-dihydro-2-methyl-N-phenyl-1,4-oxathiin-3-carboxamide) and its metabolite 5,6-dihydro-3-carboxanilide-2-methyl-1,4-oxathiin-4- oxide (calculated as carboxin) (from treatment of seed prior to planting) in or on onion, dry bulb. Uniroyal Chemical Company, Inc. requested this tolerance under the Federal Food, Drug, and Cosmetic Act, as amended by the Food Quality Protection Act of 1996. In addition, this regulatory action is part of the tolerance reassessment requirements of section 408(q) of the Federal Food, Drug, and Cosmetic Act (FFDCA) 21 U.S.C. 346a(q), as amended by the Food Quality Protection Act (FQPA) of 1996. By law, EPA is required to reassess 66% of the tolerances in existence on August 2, 1996, by August 2002, or about 6,400 tolerances. This regulatory action will count for 47 reassessments toward the August 2002 deadline.