Adversary adjudication means any of the following:
(1) An adjudication under 5 U.S.C. 554 in which the position of the Department or other agency is presented by an attorney or other representative who enters an appearance and participates in the proceeding;
(2) An appeal of a decision of a contracting officer made pursuant to section 6 of the Contract Disputes Act of 1978 (41 U.S.C. 605) before the Interior Board of Contract Appeals pursuant to section 8 of that Act (41 U.S.C. 607);
(3) Any hearing conducted under section 6103(a) of the Program Fraud Civil Remedies Act of 1986 (31 U.S.C. 3801 et seq.); or
(4) Any hearing or appeal involving the Religious Freedom Restoration Act of 1993 (42 U.S.C. 2000bb et seq.).