NY -- Standard&Poor's CreditWire 9/15/98 –- Standard&Poor's today assigned its single-'A'-plus rating to Portland, Ore.'s $160 million sewer system revenue bonds series 1998A dated Sept. 15, 1998 due June 1, 2018. The bonds are scheduled to sell Sept. 24, 1998. At the same time, Standard&Poor's affirmed its single-'A'-plus rating on the city's $238.77 million of outstanding revenue bonds and its single-'A'-plus underlying rating (SPUR) on the $258.79 million sewerage system revenue refunding bonds series 1997A. The single-'A'-plus rating on the bonds and rating affirmation on the existing parity bonds reflect the following credit strengths: -- Strong and diverse service area economy, -- Strong management team, and -- Continued solid financial performance. The ratings are
