Except as provided in ORS 280.425(2), the city shall not have power to operate any eligible project as a business or in any manner whatsoever, and nothing in ORS 280.410 to 280.485 authorizes the city to expend any funds on any eligible project, other than the revenues of such projects, or the proceeds of revenue bonds issued hereunder, or other funds granted to or appropriated by the city for the purposes of an eligible project.
ORS 280.435