This final rule establishes, modifies, and revokes specific tolerances for residues of the herbicides dichlobenil, metribuzin, pendimethalin, and terbacil; the plant growth regulator diphenylamine, and the insecticide sulprofos. EPA is revoking certain tolerances because EPA has canceled the food uses associated with them. The regulatory actions proposed in this final rule are part of the Agency's reregistration program under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), and the tolerance reassessment requirements of the Federal Food, Drug, and Cosmetic Act (FFDCA) section 408(q), as amended by the Food Quality Protection Act (FQPA) of 1996. By law, EPA is required by August 2002 to reassess 66% of the tolerances in existence on August 2, 1996, or about 6,400 tolerances. This final rule revokes 29 tolerances, but only one tolerance reassessment (sulprofos) is counted here toward the August, 2002 review deadline. The tolerances associated with the other 28 revocations were reassessed and counted previously through the Reregistration Eligibility Decision (RED) process.