Standard&Poor's Ratings Services affirmed its 'AA+/A-1+' ratings on Murray City (Intermountain Health Care), Utah's health variable-rate demand bond series 2005C and 2005D due to the proposed substitution of standby bond purchase agreements (SBPAs) with Northern Trust Co. (AA/A-1+) and Wells Fargo Bank N.A. (AAA/A-1+), respectively, for the current SBPAs provided by Citibank N.A. The long-term component of the rating is based on Intermountain Health Care. The anticipated date of substitution is Dec. 2, 2008, and on that date, the rating will be changed to reflect the current short-term component of the ratings on the substitute SBPAs.