This rule revokes tolerances and food and feed additive regulations established for residues of 16 pesticide chemicals in or on certain raw agricultural commodities (RACs), processed foods, and animal feeds. A tolerance for the herbicide barban is changed to a time-limited tolerance, with an expiration date of January 1, 1998. EPA is initiating this action for those pesticides which have no food use registrations. The applicable registrations for these pesticides have been canceled because of nonpayment of maintenance fees or by registrant request.