When a request is received for an authenticated copy of a document which the agency determines to make available to the requesting party, the agency shall cause a correct copy to be prepared and sent to the Office of the General Counsel which shall certify the same and cause the seal of the Department to be affixed, except that the Hearing Clerk in the Office of Administrative Law Judges may authenticate copies of documents in the records of the Hearing Clerk and that the Director of the National Appeals Division may authenticate copies of documents in the records of the National Appeals Division.