The General Counsel is authorized to render opinions or rulings to the public on the application of the provisions of this part. When written request is made for such opinions and rulings, they shall be transmitted to DOT and shall be available to the public in the Documentary Services Division after any appeal to or review by the Secretary has been completed or after the time for review has expired. Identifying details shall normally be stricken from copies available to the public unless the public interest requires disclosure of such details.