City Council may, at the Advisory Board’s recommendation, modify the boundaries or assessments, established pursuant to this chapter; the modifications shall be made pursuant to the requirements of the Act, but no assessment shall be modified which would impair the ability of the District to meet the obligation of a contract to be paid from the revenues derived from the levy of assessments. Such changes shall be made by ordinance adopted after a hearing before the City Council or by resolution, if approved in conjunction with confirmation of the annual report. (Ord. 6787-NS § 2, 2003)