Wachovia Bank N.A. municipal exempt receipts liquidity optional tender series 2005B06, relating to District of Columbia (Washington, D.C.) general obligation refunding bonds series 2005B, are rated 'AAA/A-1+'. The long-term component of the rating is based on the 'AAA' rated, FSA-insured underlying bond. The short-term component of the rating is based on the liquidity facility provided by Wachovia Bank N.A. until Dec. 15, 2006. The stable outlook is based on the outlook of the bond insurer.