SAN FRANCISCO (Standard&Poor's CreditWire) Nov. 9, 1999--Standard&Poor's today assigned its double-`A'-plus rating to the City and County of Denver, Colo.'s $95.51 million GO various purpose bonds series 1999B. The bonds are scheduled to sell Nov. 10, 1999. Additionally, Standard&Poor's affirmed its double-`A'-plus rating on Denver's outstanding GO bonds and the bonds issued for the Denver Board of Water Commissioners. The outlook is stable. The ratings reflect: -- A strong and diverse economy, -- Above-average wealth and income levels, -- Moderately low debt, and -- Strong financial performance. These factors are offset slightly by Amendment One of the state constitution's limitation on revenues. The Denver Board of Water Commissioner's bonds are additionally secured by water