or an authorized representative of such Secretary, determines that any person is in violation of any environmental protection requirement or any regulation issued by the Secretaries to implement this Act, such Secretary or authorized representative shall issue to such person a notice of violation describing the violation and the corrective measures to be taken. The Secretary concerned, or the authorized representative of such Secretary, shall provide such person with a period of time not to exceed 30 days to abate the violation. Such period of time may be extended by the Secretary concerned upon a showing of good cause by such person. If, upon the expiration of time provided for such abatement, the Secretary concerned, or the authorized representative of such Secretary, finds that the violation has not been abated he or she shall immediately order a cessation of all mineral activities or the portion thereof relevant to the violation. (2) If the Secretary concerned, or the authorized representative of the Secretary concerned, determines that any condition or practice exists, or that any person is in violation of any requirement under a permit approved under this Act, and such condition, practice or violation is causing, or can reasonably be expected to cause— (A) an imminent danger to the health or safety of the public