This regulation establishes exemptions from the requirement of a tolerance for residues of formic acid when used as an inert ingredient limited to 25% in pesticide formulations applied to growing crops pre- and post-harvest (adjuvant, pH buffering agent, or pH adjuster) and applied in/on animals (pH adjuster). In addition, this rule establishes an exemption from the requirement of a tolerance for residues of sodium formate when used as an inert ingredient (adjuvant, pH buffering agent) in pesticide formulations applied to growing crops pre- and post-harvest. The Monsanto Company and the Spring Trading Company on behalf of Stoller Enterprises, Inc., submitted petitions to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting establishment of these exemptions. This regulation eliminates the need to establish a maximum permissible level for residues of formic acid and sodium formate when used in accordance with the terms of these exemptions.