§ 3.4. Hearing file.

 (a)  Contents. The hearing file in each case shall consist of the application with supporting data and supplementary information. In addition, the hearing file shall contain all data and information submitted by protesting, objecting and other interested persons in favor of, or in opposition to, such application. All factual information contained in any field investigation report made by a Department examiner will also be made part of the hearing file, unless deemed confidential by the Department. Additionally, a person submitting information may request that the Department deem confidential material not relevant to the property interests of protesting, objecting, and other interested persons, such as trade secrets normally not available through commercial publications.

 (b)  Availability to protesting persons. The hearing file shall be available for inspection in the office of the Department upon written request from a protesting person at such time as the Department will prescribe. No document in the hearing file may be removed from the office of the Department by persons other than members of the Departmental staff. Photocopies may be made available, on request, to protesting persons at the established charge.