(a) Whenever the Postal Service files non-public materials with the Commission, it shall at the same time file an application for non-public treatment under Sec. 3007.21.
(b) Before the Postal Service files non-public materials with the Commission which the Postal Service has reason to believe may implicate a third-party proprietary interest, the Postal Service shall inform each such third party:
(1) Of the nature and scope of the filing with the Commission, including the pertinent docket, and
(2) That it may address its confidentiality concerns directly with the Commission.
(c) A third party with a proprietary interest in the materials may, if it deems necessary, independently seek non-public treatment under Sec. 3007.22.