Standard&Poor's Ratings Services assigned its 'AA-' rating to the Atlanta Urban Residential Finance Authority, Ga.'s taxable revenue bonds (Housing Opportunity Program) series 2007A, supported by the city of Atlanta. At the same time, Standard&Poor's affirmed its 'AA-' rating on Atlanta's preexisting GO debt. Pursuant to an interlocal agreement between the Atlanta Housing Authority and the city of Atlanta, the city covenants to make payments to the housing authority in amounts sufficient to pay debt service payments on the bonds. The payments are absolute and unconditional obligations of the city secured by its full faith and credit GO pledge. Under a loan agreement between the housing authority and the finance authority, the housing authority assigns and grants