(1) Any person whose interest may be substantially affected by a proceeding before the board may, by motion, request status as an amicus in the case. A motion and amicus brief shall be filed no later than thirty days before the hearing on the matter, unless good cause is shown.

(2) A motion to file an amicus curiae brief must include a statement of:

(a) Applicant's interest and the person or group applicant represents;

(b) Applicant's familiarity with the issues involved in the matter and with the scope of the argument presented or to be presented by the parties;

(c) Specific issues to which the amicus curiae brief will be directed; and

(d) Applicant's reason for believing that additional argument is necessary on these specific issues. The brief of amicus curiae may be filed with the motion but must be filed no later than the time set for the filing of the brief for the party whose position the amicus supports.

(3) Any party may respond to an amicus motion and brief within ten days.

(4) If leave to file an amicus brief is granted, amicus does not participate in oral argument, except at the request of the board, and is not a party of record in subsequent proceedings.