(1) A statement setting forth the matter proposed to be bargained as submitted to the Department;

(2) A copy of all pertinent material, including the Department's allegation in writing that the matter, as proposed, is not within the duty to bargain in good faith, and other relevant documentary material; and

(3) Notification by the petitioning labor organization whether the negotiability issue is also involved in an unfair labor parctice charge filed by such labor organization under part 1423 of this subchapter and pending before the General Counsel.