This regulation revises an exemption from the requirement of a tolerance for residues of styrene, copolymers with acrylic acid and/or methacrylic acid, with none and/or one or more of the following monomers: Acrylamidopropyl methyl sulfonic acid, methallyl sulfonic acid, 3-sulfopropyl acrylate, 3-sulfopropyl methacrylate, hydroxypropyl methacrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate, and/or hydroxyethyl acrylate; and its sodium, potassium, ammonium, monoethanolamine, and triethanolamine salts; the resulting polymer having a minimum number average molecular weight (in amu), 1,200 when used as an inert ingredient in a pesticide chemical formulation to include the monomer lauryl methacrylate. Toxcel, (7140 Heritage Village Plaza, Gainesville, VA 20156) on behalf of Akzo Nobel Surface Chemistry, (909 Mueller Ave., Chattanooga, TN 37406) submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting an exemption from the requirement of a tolerance.