Contractors shall preserve the records which they are required to maintain under § 9.208 (relating to records of employment) for a minimum period of two years following the date of final payment under the contract or following the date of last entry in such records, whichever is later. The Department may audit such records at any time during such two-year period and, for that purpose, the contractor shall provide representatives of the Department with necessary access, space, and assistance.
34 Pa. Code § 9.207
This section cited in 34 Pa. Code § 9.209 (relating to violations).