This regulation establishes an exemption from the requirement of a tolerance for residues of 2-propenoic acid, 2- methyl-, polymer with ethenylbenzene, 2-ethylhexyl 2-propenoate, 2-hydroxyethyl 2- propenoate, N-(hydroxymethyl) -2-methyl-2-propenamide and methyl 2- methyl-2-propenoate, ammonium salt when used as an inert ingredient in a pesticide chemical formulation. E. I. du Pont de Nemours and Company, Inc. submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), as amended by the Food Quality Protection Act of 1996 (FQPA) requesting an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of 2-propenoic acid, 2-methyl-, polymer with ethenylbenzene, 2-ethylhexyl 2-propenoate, 2-hydroxyethyl 2- propenoate, N-(hydroxymethyl) -2-methyl-2-propenamide and methyl 2- methyl-2-propenoate, ammonium salt.