Not later than 30 calendar days after receiving a report filed in compliance with section
4746 of this title, the Fund shall reimburse the participating State in an amount equal to 50 percent of the amount of contributions by the participating State to the reserve funds that are subject to reimbursement by the Fund pursuant to section
4746 of this title and this section. The Fund shall reimburse participating States, as it receives reports pursuant to section
4746
(a) of this title, until available funds are expended.