The Secretary shall set aside and reserve for assistance in targeted underserved areas an amount equal to 5.0 percent in each fiscal year of the aggregate amount of lending authority under sections
1472,
1474,
1484,
1485, and
1490d of this title. During each fiscal year, the Secretary shall set aside from amounts available for assistance under paragraphs (2) and (5) of section
1490a
(a) of this title, an amount that is appropriate to provide assistance with respect to the lending authority under sections
1484 and
1485 of this title that is set aside for such fiscal year. The Secretary shall establish a procedure to reallocate any assistance set aside in any fiscal year for targeted underserved areas that has not been expended during a reasonable period in such year for use in