SAN FRANCISCO (Standard&Poor's) Oct. 2, 2001--Standard&Poor's today assigned its triple-'A'/'A-1'-plus rating to Colorado Housing and Finance Authority's $121.84 million class I single-family mortgage bonds series AA 1-3. In addition, Standard&Poor's assigned its double-'A' rating to the authority's $10 million class II single-family mortgage bonds series AA-4. The bonds are scheduled to sell on Oct. 4, 2001. The outlook is stable. The long-term ratings reflect: -- The high credit quality of the FHA-insured single-family mortgage loans backing the majority of the bonds; -- High-quality investments; -- Sufficiency of reserves to cover potential credit and liquidity shortfalls; -- Substantial overcollateralization, as required in bond documents; and -- A strong legal structure. The short-term 'A-1'-plus rating on