will address a compelling public need for which there is no practicable alternative; and

is in the public interest.

as a condition of the modification, the current owner shall enter into a compensatory arrangement (as determined to be appropriate by the Secretary) to incur the costs of modification; and

the modification will not adversely affect the floodplain functions and values for which the easement was acquired;

any adverse impacts will be mitigated by enrollment and restoration of other land that provides greater floodplain functions and values at no additional cost to the Federal Government; and

the modification will result in equal or greater environmental and economic values to the United States.