7 C.F.R. § 800.145
(b) Retaining records. Records shall be retained for a period not less than that specified in §§ 800.146-800.159. In specific instances, the Administrator may require that records be retained for a period of not more than 3 years in addition to the specified retention period. In addition, records may be kept for a longer time than the specified retention period at the option of the agency, the contractor, the approved scale testing organization, or the individual maintaining the records.
(Approved by the Office of Management and Budget under control number 0580-0011)