This rule establishes an exemption from the requirement of a tolerance for residues of potassium dihydrogen phosphate (KH<INF>2</INF>PO<INF>4</INF>) when used as a fungicide in or on all food commodities. EPA initiated this regulation under the Federal Food, Drug, and Cosmetic Act as amended by the Food Quality Protection Act of 1996 (Pub. L. 104-170). This regulation eliminates the need to establish a maximum permissible level for residues of potassium dihydrogen phosphate, when applied in accordance with good agricultural practices.