42 U.S.C. § 5062: Audit

(a) RecordkeepingEach recipient of Federal grants, subgrants, contracts, subcontracts, or loans entered into under this chapter other than by formal advertising, and which are otherwise authorized by this chapter, shall keep such records as the Director or the Inspector General shall prescribe, including records which fully disclose the amount and disposition by such recipient of the proceeds of such assistance, the total cost of the project or undertaking in connection with which such assistance is given or used, the amount of that portion of the cost of the project or undertaking supplied by other sources, and such other records as will facilitate an effective audit. (b) Access to books, documents, papers, and records; limitationsThe Director, the Inspector General, and the Comptroller General of the United States, or any of their duly authorized representatives, shall, until the expiration of three years after completion of the project or undertaking referred to in subsection (a) of this section, have access for the purpose of audit and examination to any books, documents, papers, and records of such recipients which in the opinion of the Director, the Inspector General, or the Comptroller General may be related or pertinent to the grants, contracts, subcontracts, subgrants, or loans referred to in subsection (a).