This regulation amends the existing tolerance exemption for acetic acid by establishing an exemption from the requirement of a tolerance for residues of acetic acid, also known as vinegar in or on all food crops resulting from unintentional spray and drift to non- target vegetation including non-food, food and feed crops when used as a non-selective contact herbicide spray. SummerSet Products c/o SciReg, Inc. submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of acetic acid, also known as vinegar.