Standard&Poor's Ratings Services assigned it's 'AA-' rating to Portland, Ore.'s 2008A and 2008B first and second lien sewer system revenue and refunding bonds. Additionally, Standard&Poor's affirmed its 'AA-' rating and underlying rating (SPUR) on the city's outstanding parity first and second lien sewer system revenue bonds and its outstanding debt. The ratings reflect: A large system that services an improving Portland-area economy; Strong system management, planning standards, and reserves; The successful (on time and on budget) completion of the system's West Side interceptor, a sizable part of a large capital program, in 2006; Strong resident support to date for rate increases and a sizable capital program; and Consistently healthy historical coverage of annual debt service and