This final rule announces the revocation of tolerances for residues of the pesticides listed in the regulatory text for the herbicides dalapon, fluchloralin, metobromuron, paraquat, and sesone; the fungicides zinc sulfate, glyodin, and manganous dimethyldithiocarbamate (manam); the insecticides coumaphos, hydrogen cyanide and O-Ethyl S-phenyl ethylphosphonodithioate (fonofos); the plant growth regulator N,N-dimethylpiperidinium chloride (mepiquat chloride); and the food additive ethyl formate. Also, this rule revokes the tolerance for residues of the nematocide and insecticide ethoprop in or on mushrooms; and the food additive tolerance for residues of the fungicide paraformaldehyde in maple syrup. The regulatory actions in this 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). 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 202 tolerances and/or exemptions. Since 18 tolerances were previously reassessed, 184 are counted as 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- 300841A] 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-300841A] in the subject line on the first page of your request. FOR FURTHER INFORMATION CONTACT: Amy Caicedo, S