SAN FRANCISCO (Standard&Poor's CreditWire) Nov. 22, 1999--Standard&Poor's today assigned its single-`A'-plus rating to Puyallup, Wash.'s $9.9 million unlimited tax GO bonds series 1999. The bonds are scheduled to sell Dec. 2, 1999. Additionally, Standard&Poor's affirmed its single-`A'-plus underlying rating (SPUR) on Puyallup's $5.9 million unlimited-tax GO bonds series 1998. The outlook is stable. The rating reflects the following credit strengths: -- Good financial performance, -- Continued growth of the tax base, and -- The city's participation in the diverse Seattle-Tacoma area economy. These strengths are offset by moderate debt levels and taxpayer concentration. The bonds are secured by the city's GO and unlimited ad valorem taxes. The bonds are being issued for the construction