20 USC 1063c - Reporting and audit requirements

(a) Recordkeeping
Each recipient of a grant under this part shall keep such records as the Secretary shall prescribe, including records which fully disclose

(1) the amount and disposition by such recipient of the proceeds of such assistance;

(2) the cost of the project or undertaking in connection with which such assistance is given or used;

(3) the amount of that portion of the cost of the project or undertaking supplied by other sources; and

(4) such other records as will facilitate an effective audit.

(b) Repayment of unexpended funds
Any funds paid to an institution and not expended or used for the purposes for which the funds were paid within 10 years following the date of the initial grant awarded to an institution under part B of this subchapter shall be repaid to the Treasury of the United States.