Standard&Poor's Ratings Services lowered its rating on Pennsylvania Housing Finance Agency's single-family mortgage revenue bonds series 2005-90C to AA+/Stable/A-1 from AA+/Stable/A-1+. This action follows Standard&Poor's downgrade of PNC Bank, Delaware to 'A+/A-1' from 'AA-/A-1+' and subsequent removal from CreditWatch with negative implications. USPF Criteria: "Bank Liquidity Facilities," June 22, 2007