; (3) land subject to an easement or deed restriction that, as determined by the Secretary, provides similar protection as would be provided by enrollment in the program; or (4) land the enrollment in the program of which would undermine the purposes of the program due to on-site or off-site conditions, such as risk of hazardous substances, permitted or existing rights of way, infrastructure development, or adjacent land uses. (b) Subordination, exchange, modification, and termination (1) Subordination The Secretary may subordinate any interest in eligible land, or portion of such an interest, administered by the Secretary (including for the purposes of utilities and energy transmission services) directly or on behalf of the Commodity Credit Corporation under the program if the Secretary determines that the subordination— (A) increases conservation values or has a limited negative effect on conservation values; (B) minimally affects the acreage subject to the interest in eligible land; and (C) is in the public interest or furthers the practical administration of the program. (2) Modification and exchange (A) Modification (i) Authority The Secretary may approve a modification 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 the modification— (I) will support the viability and sustainability of working forests and the conservation values of the applicable easement; (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