Petitions to intervene must comply with all rules governing form of pleadings. The petition must set forth the name and address of the potential intervenor and must state the direct and substantial interest of the potential intervenor in the proceeding. If affirmative relief is sought, the petition must state the relief sought and the basis for granting it. The petition must also include a proof of service reflecting service upon all existing parties to the proceeding.
Idaho Admin. Code r. 62.01.01.701