NEW YORK (Standard&Poor's) Feb. 22, 2005--Standard&Poor's Ratings Services raised its ratings on six Bank of America N.A. letter of credit-backed issues to 'AA' from 'AA-' (see list below). This action follows Standard&Poor's Feb. 1, 2005, upgrade of Bank of America to 'AA/A-1+' from 'AA-/A-1+'. The ratings are based on the letters of credit provided by Bank of America. Issue Description Albuquerque str imp wtr&swr (Spl Assess Dist No. 223) subser A-D Collier Cnty Indl Dev Auth (NCH Healthcare System Inc) adj rate hlthcare fac rev bnds (Naples Comnty Hosp Inc Proj) ser 2004 Confederated Tribes of the Grand Ronde Comnty full faith&credit bnds Confederated Tribes of the Umatilla Indian Reservation