The standards specified in such regulations shall have the object of (1) prohibiting new commercial or industrial uses, other than commercial or industrial uses which the Secretary considers are consistent with the purposes of sections 459e to 459e–9 of this title, of all property within the national seashore, and (2) promoting the protection and development for purposes of sections 459e to 459e–9 of this title of the land within the national seashore by means of limitations or restrictions on the size, location or use of any commercial, residential, and other structures. In accomplishing these objectives, such standards shall seek to reconcile the population density of the seashore on October 17, 1984, with the protection of the natural resources of the Seashore  consistent with the purposes for which it has been established as provided by sections 459e to 459e–9 of this title.
Following issuance of such regulations the Secretary shall approve any zoning ordinance or any amendment to any approved zoning ordinance submitted to him that conforms to the standards contained in the regulations in effect at the time of adoption of the ordinance or amendment. Such approval shall remain effective for so long as such ordinance or amendment remains in effect as approved.
No zoning ordinance or amendment thereof shall be approved by the Secretary which (1) contains any provisions that he considers adverse to the protection and development, in accordance with the purposes of sections 459e to 459e–9 of this title, of the area comprising the national seashore; or (2) fails to have the effect of providing that the Secretary shall receive notice of any variance granted under, or any exception made to, the application of such ordinance or amendment.