7 C.F.R. § 800.149
(b) Approvals. Agencies shall maintain complete records of approvals of weighers. These records consist of current information showing the name of each approved weigher employed by or at each approved weighing facility in the area of responsibility assigned to an agency or field office. These records shall be maintained for the tenure of the weigher's employment as an approved weigher.
(Approved by the Office of Management and Budget under control number 0580-0011)