Prior to imposing and collecting the Supplemental Tax authorized by this subtitle, the Authority shall enter into a memorandum of understanding with the Mayor of the City regarding the level of services to be maintained by the City as the City’s partnership obligation to the Authority and the District’s taxpayers. Such a memorandum shall:describe the existing levels of service within the District; commit the City to the maintenance of such levels of service; and outline the further undertakings of the City in response to the initiative represented by the creation of the District (the “Baseline Plus”). In addition, the City may include in the memorandum a process by which the Authority and the City shall cooperate on a comprehensive sidewalk repair program, which shall include the issuing of notices by the City relating to footways requiring repair, repaving, or regrading, and the arranging for repairs to be made by the Authority, with the enforcement support of City assessments, where appropriate. The maintenance of existing services shall be governed by 2 principles:No decrease in such services shall occur except as part of an overall decrease in services necessitated by changes in funding, policy, or resources, and then only in proportion to the decreases implemented elsewhere in the City. Any increase in such services generally throughout the City shall be matched with increases in such services within the District, in proportion to the increases implemented elsewhere in the City. Ord. 92-057 Ord. 96-093