84 STAT. ]
PUBLIC LAW 91-258-MAY 21, 1970
in no event may he allow project costs in excess of the definite amount stated in the grant agreement; and (4) it has not been included in any project authorized under section 18 of this part. The Secretary is authorized to prescribe such regulations, including regulations with respect to the auditing of project costs, as he considers necessary to effectuate the purposes of this section.
231
Regulations.
(b) COSTS XOT ALLOWED.—The following are not allowable project
costs: (1) the cost of construction of that part of an airport development project intended for use as a public parking facility for passenger automobiles; or (2) the cost of construction, alteration, or repair of a hangar or of any part of an airport building except such of those buildings or parts or buildings intended to house facilities or activities directly related to the safety of persons at the airport. SEC. 21. PAYMENTS UNDER GRANT AGREEMENTS.
The Secretary, after consultation with the sponsor with which a grant agreement has been entered into, may determine the times and amounts in which payments shall be made under the terms of a grant agreement for airport development. Payments in an aggregate amount not to exceed 90 per centum of the United States share of the total estimated allowable project costs may be made from time to time in advance of accomplishment of the airport development to which the payments relate, if the sponsor certifies to the Secretary that the aggregate expenditures to be made from the advance payments will not a t any time exceed the cost of the airport development work which has been performed up to that time. If the Secretary determines that the aggregate amount of payments made under a grant agreement at any time exceeds the United States share of the total allowable project costs, the Ignited States shall be entitled to recover the excess. If the Secretary finds that the airport development to which the advance payments relate has not been accomplished within a reasonable time or the development is not completed, the United States may recover any part of the advance payment for which the United States received no benefit. Payments under a grant agreement shall be made to the official or depository authorized by law to receive public funds and designated by the sponsor. SEC. 22. PERFORMANCE OF CONSTRUCTION WORK.
(a) REGULATIONS.—The construction work on any project for airport development approved by the Secretary pursuant to section 16 of this part shall be subject to inspection and approval by the Secretary and m accordance with regulations prescribed by him. Such regulations shall require such cost and progress reporting by the sponsor or sponsors of such project as the Secretary shall deem necessary. No such regulation shall have the effect of altering any contract in connection with any project entered into without actual notice of the regulation. (b) MINIMUM RATES or WAGES.—All contracts in excess of $2,000 for work on projects for airport development approved under this part which involve labor shall contain provisions establishing minimum rates of wages, to be predetermined by the Secretary of Labor, in accordance with the Davis-Bacon Act, as amended (40 U.S.C. 276a^— 276a-5), which contractors shall pay to skilled and unskilled labor, and such minimum rates shall be stated in the invitation for bids and shall be included in proposals or bids for the work. (c) OTHER PROVISIONS AS TO LABOR.—All contracts for work on projects for airport development approved under this part which involve labor shall contain such provisions as are necessary to insure (1) that no convict labor shall be employed; and (2) that, in the employment of labor (except in executive, administrative, and supervisory positions), preference shall be given, where they are qualified, 47-348 0 - 7 2 - 1 9 (Pt. 1)
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78 Stat. 23J
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