Pub. L. 88-164, tit. I, pt. B, sec. 123
amount of grants; payments
amount of grants; payments Sec. 123. (a) The total of the grants with respect to tiny project for the construction of a facility under this part may not exceed 75 per centum of the necessary cost of construction thereof as determined by the Secretary. (b) Payments of grants under this part shall be made in advance or by way of reimbursement, in such installments consistent with construction progress, and on such conditions as the Secretary may determine.