The difference between thirty-eight million acres and the 22 million acres selected by Village Corporations pursuant to subsections (a) and (b) of this section shall be allocated among the eleven Regional Corporations (which excludes the Regional Corporation for southeastern Alaska) as follows:
(1) The number of acres each Regional Corporation is entitled to receive shall be computed
(A) by determining on the basis of available data the percentages of all land in Alaska (excluding the southeastern region) that is within each of the eleven regions,
(B) by applying that percentage to thirty-eight million acres reduced by the acreage in the southeastern region that is to be selected pursuant to section
1615 of this title, and
(C) by deducting from the figure so computed the number of acres within that region selected pursuant to subsections (a) and (b) of this section.
(3) Before the end of the fourth year after December 18, 1971, each Regional Corporation shall select the acreage allocated to it from the lands within the region withdrawn pursuant to section
1610 (a)(1) of this title, and from the lands within the region withdrawn pursuant to section
1610 (a)(3) of this title to the extent lands withdrawn pursuant to section
1610 (a)(1) of this title are not sufficient to satisfy its allocation: Provided, That within the lands withdrawn by section
1610 (a)(1) of this title the Regional Corporation may select only even numbered townships in even numbered ranges, and only odd numbered townships in odd numbered ranges.
(4) Where the public lands consist only of the mineral estate, or portion thereof, which is reserved by the United States upon patent of the balance of the estate under one of the public land laws, other than this chapter, the Regional Corporations may select as follows:
(A) Where such public lands were not withdrawn pursuant to section
1610 (a)(3) of this title, but are surrounded by or contiguous to lands withdrawn pursuant to section
1610 (a)(3) of this title, and filed upon for selection by a Regional Corporation, the Corporation may, upon request, have such public land included in its selection and considered by the Secretary to be withdrawn and properly selected.
(B) Where such public lands were withdrawn pursuant to section
1610 (a)(1) of this title and are required to be selected by paragraph (3) of this subsection, the Regional Corporation may, at its option, exclude such public lands from its selection.
(C) Where such public lands are surrounded by or contiguous to subsurface lands obtained by a Regional Corporation under subsections (a) or (b) of this section, the Corporation may, upon request, have such public land conveyed to it.
(D)
(i) A Regional Corporation which elects to obtain public lands under subparagraph (C) shall be limited to a total of not more than 12,000 acres. Selection by a Regional Corporation of in lieu surface acres under subparagraph (E) pursuant to an election under subparagraph (C) shall not be made from any lands within a conservation system unit (as that term is defined by section
3102 (4) of title
16).
(ii) An election to obtain the public lands described in subparagraph (A), (B), or (C) shall include all available parcels within the township in which the public lands are located.
(iii) For purposes of this subparagraph and subparagraph (C), the term Regional Corporation shall refer only to Doyon, Limited.
(E) Where the Regional Corporation elects to obtain such public lands under subparagraph (A), (B), or (C) of this paragraph, it may select, within ninety days of receipt of notice from the Secretary, the surface estate in an equal acreage from other public lands withdrawn by the Secretary for that purpose. Such selections shall be in units no smaller than a whole section, except where the remaining entitlement is less than six hundred and forty acres, or where an entire section is not available. Where possible, selections shall be of lands from which the subsurface estate was selected by that Regional Corporation pursuant to subsection (a)(1) of this section or section
1613 (h)(9) of this title, and, where possible, all selections made under this section shall be contiguous to lands already selected by the Regional Corporation or a Village Corporation. The Secretary is authorized, as necessary, to withdraw up to two times the acreage entitlement of the in lieu surface estate from vacant, unappropriated, and unreserved public lands from which the Regional Corporation may select such in lieu surface estate except that the Secretary may withdraw public lands which had been previously withdrawn pursuant to subsection 1616(d)(1) of this title.
(F) No mineral estate or in lieu surface estate shall be available for selection within the National Petroleum ReserveAlaska or within Wildlife Refuges as the boundaries of those refuges exist on December 18, 1971.