; (II) will result in equal or increased conservation values; (III) is consistent with the original intent of the easement; (IV) is consistent with the purposes of the program; and (V) is in the public interest or furthers the practical administration of the program, including correcting errors, exercising reserved rights, and increasing flexibility to recognize changes in water availability or administration. (ii) Limitation In modifying an interest in land, or portion of such interest, under this subparagraph, the Secretary may not, except in the case of a modification that includes a change to an easement to add acreage, increase any payment to an eligible entity. (iii) NEPA compliance An action taken pursuant to this subparagraph may not be considered a major Federal action under section 102(2)(C) of the National Environmental Policy Act of 1969 ( 42 U.S.C. 4332(2)(C) ). (B) Exchange (i) Authority The Secretary may approve an exchange of any interest in land, or portion of such interest, administered by the Secretary, either directly or on behalf of the Commodity Credit Corporation, under the program if the Secretary determines that— (I) no reasonable alternative exists and the effect on the interest in land is avoided or minimized to the extent practicable; and (II) the exchange— (aa) results in equal or increased conservation values; (bb) results in equal or greater economic value to the United States; (cc) is consistent with the original intent of the easement; (dd) is consistent with the purposes of the program; and (ee) is in the public interest or furthers the practical administration of the program. (ii) Limitation In exchanging an interest in land, or portion of such interest, under this subparagraph, the Secretary may not increase any payment to an eligible entity.