Except in cases of emergency, the Purchasing Agent, or his or her designee, shall not issue any order for delivery on a contract or open market purchase until it has been certified, after pre-audit, that there is sufficient unencumbered appropriation balance to the credit of the using agency or department, in excess of all unpaid obligations, to defray the amount of the orders.
(Ord. 2007-2787, passed 3-5-2007)