(a) A person may submit a motion for leave to intervene as a party in a civil penalty action. Except for good cause shown, a motion for leave to intervene must be submitted not later than 10 days before the hearing.
(b) The administrative law judge may grant a motion for leave to intervene if the administrative law judge finds that intervention will not unduly broaden the issues or delay the proceedings and -
(1) The person seeking to intervene will be bound by any order or decision entered in the action; or
(2) The person seeking to intervene has a property, financial, or other legitimate interest that may not be addressed adequately by the parties.
(c) The administrative law judge may determine the extent to which an intervenor may participate in the proceedings.