((a)) ** State plan expenditures** From each State’s allotments for a fiscal year under , the Secretary shall pay to the State the Federal share of the cost, other than the cost for construction, incurred during such year for activities carried out under the State plan approved under . The Secretary shall make such payments from time to time in advance on the basis of estimates by the Secretary of the sums the State will expend for the cost under the State plan. The Secretary shall make such adjustments as may be necessary to the payments on account of previously made underpayments or overpayments under this section.section 15022 of this titlesection 15024 of this title
((b)) ** Designated State agency expenditures** The Secretary may make payments to a State for the portion described in in advance or by way of reimbursement, and in such installments as the Secretary may determine.section 15024(c)(5)(B)(vi) of this title