Merrill Lynch Puttable FLOATs/RITES Trust puttable floating option tax-exempt receipts series PT-806, relating to District of Columbia GO refunding bonds (series 1999B), are rated 'AAA/A-1'. The long-term component of the rating is based on the FSA-insured underlying bond. The short-term component of the rating is based on a liquidity LOC guarantee from Svenska Handelsbanken AB, and the expiration date of the liquidity facility is May 15, 2004.