Standard&Poor's Ratings Services confirmed its 'AA+/A-1+' rating on Minneapolis, Minn.'s (Riverton Community Housing) variable-rate demand student residence revenue bonds series, due to the bank facility being extended to Sept. 4, 2018. The long-term and short-term components of the rating are based on the ratings on the confirming letter of credit providers, Bridgewater Bank and Federal Home Loan Bank of Des Moines. Criteria: Methodology And Assumptions: Approach To Evaluating Letter Of Credit-Supported Debt, July 6, 2009