; and (ii) on receipt of acceptable title to the non-Federal land and subject to valid existing rights, convey to the landowner all right, title, and interest of the United States in and to the Federal land described in subparagraph (B)(ii). (B) Description of land (i) Non-federal land The non-Federal land referred to in subparagraph (A) is the approximately 15 acres of non-Federal land identified on the Map as Faulkner to BLM . (ii) Federal land The Federal land referred to in subparagraph (A)(ii) is the approximately 10 acres of Federal land identified on the Map as BLM to Faulkner . (3) Quant exchange (A) In general Subject to subsections (b) through (h), if the owner of the non-Federal land described in subparagraph (B)(i) offers to convey to the United States all right, title, and interest of the landowner in and to the non-Federal land, the Secretary shall— (i) accept the offer; and (ii) on receipt of acceptable title to the non-Federal land and subject to valid existing rights, convey to the landowner all right, title, and interest of the United States in and to the Federal land described in subparagraph (B)(ii). (B) Description of land (i) Non-federal land The non-Federal land referred to in subparagraph (A) is the approximately 271 acres of non-Federal land identified on the Map as Quant to BLM . (ii) Federal land The Federal land referred to in subparagraph (A)(ii) is the approximately 277 acres of Federal land identified on the Map as BLM to Quant . (4) Twickenham livestock llc exchange (A) In general Subject to subsections (b) through (h), if the owner of the non-Federal land described in subparagraph (B)(i) offers to convey to the United States all right, title, and interest of the landowner in and to the non-Federal land, the Secretary shall— (i) accept the offer