Upon recommendation of the Executive and after a public hearing and an affirmative vote of at least four council members, the Council may amend the Annual Budget and Appropriations Ordinance to provide funds for a Capital Project not previously appearing in the Capital Budget for the fiscal year. The amendment may not increase the total amount of appropriations for the fiscal year, unless such increased appropriations shall be funded from revenues received in excess of those budgeted or from unanticipated revenues not previously budgeted in the Annual Budget and Appropriations Ordinance for the fiscal year.