This final rule revokes specific tolerances and/or exemptions for residues of the herbicides chloramben, 2-chloro-N,N- diallylacetamide, chloroxuron, diethatyl-ethyl, terbutryn, and 2,3,6- trichlorophenylacetic acid; the fungicides biphenyl, captafol, chlorosulfamic acid, and sulfur dioxide; and the insecticides calcium cyanide, 2-chloro-1-(2,4,5-trichlorophenyl) vinyl dimethyl phosphate, chlorthiophos, and ethyl 4,4'-dichlorobenzilate [chlorobenzilate]; as listed in the regulatory text. The regulatory actions in this document 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). By law, EPA is required to reassess 33% of the tolerances in existence on August 2, 1996, by August 1999, or about 3,200 tolerances. This document revokes 138 tolerances and/or exemptions which would be counted among reassessments made toward the August, 1999 review deadline of FFDCA section 408(q), as amended by the Food Quality Protection Act (FQPA) of 1996. DATES: This final rule becomes effective October 19, 1999. Objections and requests for hearings, identified by docket control number [OPP- 300898] must be received by EPA on or before September 20, 1999. ADDRESSES: Objections and hearing requests can be submitted by mail or in person. Please follow the detailed instructions provided in Unit V of the ``SUPPLEMENTARY INFORMATION'' section of this document. To ensure proper identification of your objection or hearing request, you must identify the docket control number [OPP-300898] in the subject line on the first page of your request. FOR FURTHER INFORMATION CONTACT: For technical information contact: Joseph Nevola, Special Review Branch, (7508C), Special Review and Reregistration Division, Office of Pesticide Programs, U.S. Environmental Protection Agency, 401 M St., SW., Washington, DC 20460. Office location: Special Review B