Federal Aviation Administration, DOT Section 151.59 furnish, on due notice, cost information in the following cost classifications: (1) Purchase price or value of land. (2) Incidental costs of land acquisition. (3) Costs of contract construction. (4) Costs of force account construction. (5) Engineering costs of plans and designs. (6) Engineering costs of supervision and inspection. (7) Other administrative costs. (b) The sponsor shall obtain and retain in its files for a period of three years after the date of the final grant payment, documentary evidence such as invoices, cost estimates, and payrolls supporting each item of project costs. (c) The sponsor shall retain, for a period of three years after the date of the final grant payment, evidence of all payments for items of project costs including vouchers, cancelled checks or warrants, and receipts for cash payments. (d) The sponsor shall allow the Administrator and the Comptroller General of the United States, or an authorized representative of either of them, access to any of its books, documents, papers, and records that are pertinent to grants received under the Federalaid Airport Program for the purposes of accounting and audit. Appropriate FAA personnel may make progress audits at any time during the project, upon notice to the sponsor. If work is suspended on the project for an appreciable period of time, an audit will be made before any semi-final payment is made. In each case an audit is made before the final payment. [Doc. No. 1329, 27 FR 12351, Dec. 13, 1962, as amended by Amdt. 151-8, 30 FR 8040, June 23, 1965] Section 151.57 Grant payments: General. (a) An application for a grant payment is made on FAA Form 5100-6, accompanied by - (1) A summary of project costs on Form FAA-1630; (2) A periodic cost estimate on Form FAA-1629 for each contract representing costs for which payment is requested; and (3) Any supporting information, including appraisals of property interests, that the FAA needs to determine the allowability of any costs for which payment is requested. (b) Contractor-s certifications. Each application that involves work performed by a contractor must contain, in the contractor-s certification in the periodic cost estimate, a statement that - there has been full compliance with all labor provisions included in the contract identified above and in all subcontracts made under that contract - , and, in the case of a substantial dispute as to the nature of the contractor-s or a subcontractor-s obligation under the labor provisions of the contract or a subcontract, and additional phrase - except insofar as a substantial dispute exists with respect to these provisions - . (c) If a contractor or subcontractor fails or refuses to comply with the labor provisions of the contract with the sponsor, further grant payments to the sponsor are suspended until the violations stop, until the Administrator determines the allowability of the project costs to which the violations related, or, to the extent that the violations consist of underpayments to labor, until the sponsor furnishes satisfactory assurances to the FAA that restitution has been or will be made to the affected employees. (d) If, upon final determination of the allowability of all project costs of a project, it is found that the total of grant payments to the sponsor was more than the total United States share of the allowable costs of the project, the sponsor shall promptly return the excess to the FAA. [Doc. No. 1329, 27 FR 12351, Dec. 13, 1962, as amended by Amdt. 151-4, 29 FR 11336, Aug. 6, 1964; Amdt. 151-8, 30 FR 8040, June 23, 1965; Amdt. 151-17, 31 FR 16525, Dec. 28, 1966; Amdt. 151-32, 34 FR 9617, June 19, 1969] Section 151.59 Grant payments: Land acquisition. If an approved project includes land acquisition as an item of airport development, the sponsor may, at any time after executing the grant agreement and after title evidence has been approved by the Administrator for the property interest for which payment is 693 VerDate Sep<11>2014 08:20 May 17, 2019 Jkt 247048 PO 00000 Frm 00703 Fmt 8010 Sfmt 8010 Y:\SGML\247048.XXX 247048