thereof relevant to the condition, practice, or violation: (A) An imminent danger to the health or safety of the public. (B) Significant, imminent environmental harm to land, air, water, or fish or wildlife resources. (3) Duration (A) Termination A cessation order issued pursuant to paragraph (1) or (2) shall remain in effect until the Secretary concerned determines that the condition, practice, or violation has been abated or until such order is modified, vacated, or terminated by the Secretary concerned. In any such order, the Secretary concerned shall determine the steps necessary to abate the violation in the most expeditious manner possible and shall include the necessary measures in such order. (B) Financial assurances The Secretary concerned shall require appropriate financial assurances to ensure that the abatement obligations are met when issuing a cessation order under this section. (C) Authority of the Secretary concerned Any notice or order issued pursuant to paragraph (1) or (2) may be modified, vacated, or terminated by the Secretary concerned. Any person to whom any such notice or order is issued shall be entitled to a hearing on the record. (4) Alternative enforcement action (A) In general If, 30 days after the notice of violation referred to in paragraph (1)(A) is issued, the required abatement has not occurred, the Secretary concerned shall take such alternative enforcement action against the claim holder, license holder, lease holder, or operator (or any person who controls the claim holder, license holder, lease holder, or operator) as will most likely bring about such required abatement in the most expeditious manner possible, which may include seeking appropriate injunctive relief to bring about abatement. (B) Earlier alternative enforcement action Nothing in this paragraph shall preclude the Secretary concerned from taking alternative enforcement action before the expiration of the 30-day period described in subparagraph (A). (5) Failure or default (A) In general If a claim holder, license