Standard&Poor's Ratings Services revised its rating on Colorado Housing and Finance Authority's class I adjustable-rate single-family mortgage revenue bonds, series 2006B, 2006C, and 2007A, to 'AAA/A-1+' from 'AAA/A-2', reflecting the substitution of a standby letter of credit (LOC) from Fannie Mae and Freddie Mac on Dec. 16, 2009. Standard&Poor's also affirmed its 'AAA/A-1+' rating on the authority's series 2003B-1 bonds based on the delivery of the standby LOC from Fannie Mae and Freddie Mac. In addition, Standard&Poor's affirmed its 'AAA/A-1+' rating on the authority's series 2002A, 2003C-1, 2006A-1, 2006A-2, 2006A-3, 2006B-2, 2006B-3, 2006C-2, 2007A-2, 2002B, and 2008A bonds. Standard&Poor's also affirmed its 'AAA/A-1' rating on the authority's series 2003C, 2004A, 2004B, 2005A,
