amount of grant—payment

amount of grant—payment Sec. 109. Upon his approval of any application for a grant under this title, the Commissioner shall reserve from the applicable allotment (including any applicable reallotment) available therefor, the amount of such grant, which (subject to the limits of such allotment or reallotment) shall be equal to the Federal share (ascertained by him under section 108(b)(3)) of the development cost of the project covered by such application. The Commissioner shall pay such reserved amount, in advance or by way of reimbursement, and in such installments consistent with construction progress, as he may determine. The Commissioner’s reservation or any amount under this section may be amended by him, either upon approval of an amendment of the application covering such project, or upon revision of the estimated development cost of a project with respect to which such reservation was made, and in the event of an upward revision of such estimated cost approved by him he may reserve the Federal share of the added cost only from the applicable allotment, (or reallotment) available at the time of such approval.