When advised by a staff member that no further staff review of the request for review is possible, the requestor may petition the Commission for review as to a specific or definite class of documents.
52 Pa. Code § 1.75
This section cited in 52 Pa. Code § 1.74 (relating to disclosure of other documents); 52 Pa. Code § 1.77 (relating to extensions of time to review folders); and 52 Pa. Code § 5.349 (relating to requests for documents, entry for inspection and other purposes).