NEW YORK (Standard&Poor's) May 4, 2011--Standard&Poor's Ratings Services corrected its ratings on the following series of bonds to 'AA+/NR' from 'AA+'. The outlook on these ratings is stable. Atlanta, Ga.'s water and wastewater variable-rate demand revenue bonds series 2001C; Birmingham Airport Authority, Ala.'s series 2003A airport revenue refunding bonds; Austin, Texas's series 2004 water and wastewater system variable rate revenue refunding bonds; Bethlehem Area School District, Pa.'s series 2005 general obligation bonds; Butler County General Authority, Pa.'s series 2007 variable-rate demand revenue bonds, issued for Hampton Township School District; Butler County General Authority, Pa.'s series 2006 variable-rate demand revenue bonds (Pine Richland School District Program); Butler County General Authority, Pa.'s series 2008 variable-rate demand revenue bonds,