45 CFR § 90.45
Information requirements
April 14, 2021
Each agency shall provide in its regulations a requirement that the recipient:
(a) Provide to the agency information necessary to determine whether the recipient is in compliance with the Act; and
(b) Permit reasonable access by the agency to the books, records, accounts, and other recipient facilities and sources of information to the extent necessary to determine whether a recipient is in compliance with the Act.