(a) Ordinarily, the determination of an award will be made on the basis of the written record. However, on request of either the applicant or Bureau counsel, or on her own initiative, the presiding officer may order further proceedings, such as an informal conference, oral argument, additional written submissions or, as to issues other than excessive demand or substantial justification, an evidentiary hearing. Such further proceedings shall be held only when necessary for full and fair resolution of the issues arising from the application, and shall be conducted as promptly as possible. Whether or not the position of the agency embodied an excessive demand or was substantially justified shall be determined on the basis of the administrative record, as a whole, which is made in the adversary adjudication for which fees and other expenses are sought.

(b) A request that the presiding officer order further proceedings under this section shall specifically identify the information sought or the disputed issues and shall explain why the additional proceedings are necessary to resolve the issues.