Contracts for professional services pursuant to Section 3.16.200 may be amended by the issuance of a written amendment provided the change which is the subject of the amendment is reasonably related to the scope of the original contract. The requesting department will maintain control relative to the scoping, estimating, and negotiating of the proposed change(s), and the finance director will confirm the availability of funds for the proposed change in the event that the amendment increases the contract cost. Any amendment which results in a total contract amount that would qualify for an informal proposal may be approved by the city manager and the finance director. Any amendment which results in a total contract amount that would qualify for a formal proposal shall be approved by the city council, or resubmitted to council for approval of the amendment. (Ord. 595 § 1 (Exh. A (part)), 2012)