All source documents supporting any given transaction (receipts, purchase orders, invoices, RFP/RFQ data and bid materials) will be retained and filed in an appropriate manner. Where feasible, source documents pertinent to each individual procurement shall be separately filed and maintained. Where it is infeasible to maintain individual procurement files, source documents will be filed and maintained in a reasonable manner (examples include chronologically, by vendor, by type of procurement and the like). Whatever form of documentation and filing is employed, the purpose of this section is to ensure that a clear and consistent audit trail is established. At a minimum, source document data must be sufficient to establish the basis for selection, basis for cost (including the issue of reasonableness of cost) and basis for payment.
(1997 Code, § 245.4) (Ord. 92-019, passed 10-14-1992)