Treasury OIG should follow-up with Kiowa's management to confirm if the $727,002 in Contracts greater than or equal to $50,000 payment type are recouped or replaced by other eligible expenditures, not previously charged to CRF, that were incurred during the period of performance. Further, based on Kiowa's responsiveness to Treasury OIG's requests and its ability to provide sufficient documentation and/or replace unsupported transactions charged to CRF with valid expenditures, Treasury OIG should determine the feasibility of conducting an audit for the Contracts greater than or equal to $50,000 payment type.