Standard&Poor's Ratings Services assigned its 'A' long-term rating to the City of Tacoma, Wash.'s $4.6 million series 2010 convention center and parking revenue refunding bonds. Additionally, Standard&Poor's affirmed its 'A' long-term rating on the city's outstanding parking system bonds. The 'A' long-term rating on the city's series 2010 bonds reflects: The city's diverse pledge of revenues, including certain sales and use taxes and the Tacoma parking system's net revenues, which consist of revenue from seven parking garages, two surface lots, on-street parking spaces, and parking violation fines; The city's good unrestricted cash position covering 586 days' operating expenses; and The city manager's flexibility to adjust rates based on a market-based methodology without additional approval by the