(a) The grant recipient shall maintain books, records and other evidence pertinent to costs incurred in connection with the project. The books and records shall be maintained according to generally-accepted accounting principles.
(b) Financial records, supporting documents, statistical records and other records pertaining to the grant shall be retained by the grant recipient for 3 years following the date final payment is made. The records and documents shall be available for inspection or audit by the Commonwealth, its agencies and instrumentalities during this time period.