This regulation establishes a tolerance for combined residues of the insecticide avermectin B<INF>1</INF> (a mixture of avermectins containing greater than or equal to 80% avermectin B<INF>1a</INF> (5-O- demethyl avermectin A<INF>1</INF>) and less than or equal to 20% avermectin B<INF>1b</INF> (5-O-demethyl-25-de(1-methylpropyl)-25-(1- methylethyl) avermectin A<INF>1</INF>)) and its delta-8,9-isomer in or on grapes at 0.02 parts per million (ppm), peppers at 0.02 ppm, and cotton gin byproducts at 0.15 ppm; makes permanent tolerances for citrus, hops, potatoes, meat and meat by-products, milk, and cotton seed which were previously time limited (expiring September 1, 1999); and clarifies that permanent tolerances have previously been established for almond hulls at 0.10 ppm and wet apple pomace at 0.10 ppm. Novartis Crop Protection, Inc. requested these tolerance actions under the Federal Food, Drug, and Cosmetic Act, as amended by the Food Quality Protection Act of 1996. DATES: This regulation is effective September 7, 1999. Objections and requests for hearings, identified by docket control number OPP-300916, must be received by EPA on or before November 8, 1999. ADDRESSES: Written objections and hearing requests may be submitted by mail, in person, or by courier. Please follow the detailed instructions for each method as provided in Unit VI. of the ``SUPPLEMENTARY INFORMATION'' section. To ensure proper receipt by EPA, your objections and hearing requests must identify docket control number OPP-300916 in the subject line on the first page of your response. FOR FURTHER INFORMATION CONTACT: By mail: Thomas C. Harris, Registration Division (7505C), Office of Pesticide Programs, Environmental Protection Agency, 401 M St., SW., Washington, DC 20460; telephone number: (703) 308-9423; and e-mail address: harris.thomas@epa.gov. SUPPLEMENTARY INFORMATION: