(1) The issuing agency in its discretion may stay the effectiveness of any order that has been appealed to the board during the pendency of such an appeal.
(2) At any time during the pendency of an appeal of such an order to the board, the appellant may apply pursuant to RCW
43.21B.320 to the hearings board for a stay of the order or for the removal thereof.
(3) Upon failure to comply with any final order of the department, the attorney general, on request of the department, may bring an action in the superior court of the county where the violation occurred or the potential violation is about to occur to obtain such relief as necessary, including injunctive relief, to ensure compliance with the order. The air authorities may bring similar actions to enforce their orders.
(4) An appealable decision or order shall be identified as such and shall contain a conspicuous notice to the recipient that it may be appealed only by filing an appeal with the hearings board and serving it on the issuing agency within thirty days of the date of receipt.