(b) A petition for enforcement of any agency action may be filed by any substantially interested person who is a resident of the state. However, no such action may be commenced:
2. If an agency has filed, and is diligently prosecuting, a petition for enforcement.
(d) In an action brought under paragraph (b), the agency whose action is sought to be enforced, if not a party, may intervene as a matter of right.
(3) After the court has rendered judgment on a petition for enforcement, no other petition shall be filed or adjudicated against the same agency action, on the basis of the same transaction or occurrence, unless expressly authorized on remand. The doctrines of res judicata and collateral estoppel shall apply, and the court shall make such orders as are necessary to avoid multiplicity of actions.
(4) In all enforcement proceedings:
(b) If one or more petitions for enforcement and a petition for review involving the same agency action are pending at the same time, the court considering the review petition may order all such actions transferred to and consolidated in one court. Each party shall be under an affirmative duty to notify the court when it becomes aware of multiple proceedings.
(c) Should any party willfully fail to comply with an order of the court, the court shall punish that party in accordance with the law applicable to contempt committed by a person in the trial of any other action.
(6) Notwithstanding any other provision of this section, upon receipt of evidence that an alleged violation of an agency’s action presents an imminent and substantial threat to the public health, safety, or welfare, the agency may bring suit for immediate temporary relief in an appropriate circuit court, and the granting of such temporary relief shall not have res judicata or collateral estoppel effect as to further relief sought under a petition for enforcement relating to the same violation.
(7) In any final order on a petition for enforcement the court may award to the prevailing party all or part of the costs of litigation and reasonable attorney’s fees and expert witness fees, whenever the court determines that such an award is appropriate.
