Costs of construction, operation, maintenance, and replacement of each unit or separable feature thereof authorized by section
1592
(a) of this title, costs of construction, operation, and maintenance of measures to replace incidental fish and wildlife values foregone, and costs of implementation of the on-farm measures authorized by section
1592
(c) of this title allocated for repayment by the upper basin under subsection (a)(2) of this section shall be paid in accordance with section
620d
(d)(5) of this title from the Upper Colorado River Basin Fund within the limit of the funds made available under subsection (e) of this section.