land. (d) Regulations Not later than 1 year after the effective date of this Act, the Secretary shall issue such regulations as are necessary to carry out this section. 507. Enforcement (a) Orders (1) Notice of violation (A) In general If the Secretary concerned determines that any person is in violation of any environmental protection requirement or any regulation issued by the Secretary concerned to implement this Act, such the Secretary concerned shall issue to such person a notice of violation describing the violation and the corrective measures to be taken. (B) Time to abate A person issued a notice of violation under subparagraph (A) shall abate such violation within a time period determined by the Secretary concerned which shall not exceed 30 days. (C) Extension of time to abate The Secretary concerned may, upon a showing of good cause by the person issued a notice of violation under subparagraph (A), extend the period of time under subparagraph (B). (D) Continued violation If, upon the expiration of the time period under subparagraph (B), including any extension under subparagraph (C), the Secretary concerned finds that the person issued a notice of violation under subparagraph (A) has not abated such violation, the Secretary concerned shall immediately order a cessation of all mineral activities or the portion thereof relevant to the violation. (2) Order for immediate cessation If the Secretary concerned determines that any condition or practice exists, or that any person is in violation of any requirement under a permit issued under this Act, and such condition, practice, or violation is causing, or can reasonably be expected to cause either of the following, the Secretary concerned shall immediately order a cessation of all mineral activities or the portion 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