Standard&Poor's Ratings Services assigned its 'AA' rating to San Antonio (City Public Service, or CPS), Texas' electric and gas systems revenue refunding bonds, series 2006B, and affirmed its 'AA' rating on CPS' outstanding senior-lien parity debt. At the same time, Standard&Poor's affirmed its 'AA-/A-1+' rating on CPS' outstanding junior-lien electric and gas systems revenue bonds, as well as its 'A-1+' short-term rating on CPS' CP program. The 'AA' rating reflects CPS': Strong economy, Economic resource mix, Astute management. Mitigating factors include CPS': Large capital spending program, and Dependence on nuclear power for 35%-40% of its power supply. The CP rating is linked to CPS' 'AA' long-term debt rating. Proceeds of the series 2007B bonds will be