Code of Federal Regulations Title 43. Public Lands:  Interior § 43.4.406 Intervention;  amicus curiae

(1) Whether the person had a right to appeal the decision under § 4.410 or would be adversely affected if the Board reversed, vacated, set aside, or modified the decision;  and

(2) How and when the person learned of the appeal.

(1) Grant the motion to intervene;

(2) Deny the motion to intervene for good cause, e.g., where granting it would disadvantage the rights of the existing parties or unduly delay adjudication of the appeal;  or

(3) Grant the motion to intervene but limit the person's participation in the appeal.

(1) The motion must state the person's interest in the appeal and how its brief will be relevant to the issues involved.

(2) The Board may grant or deny the motion in its discretion. The Board may also allow a person to file a brief as amicus curiae if it denies the person's motion to intervene.