NEW YORK (Standard&Poor's) Dec. 2, 2011--Standard&Poor's Ratings Services today stated that its 'AA/A-1+' rating on Maryland Economic Development Corp.?s $75 million adjustable-mode revenue refunding bonds series 2006A (for the Constellation Energy Group Inc. project) due April 1, 2014, remains on CreditWatch with positive implications, where it was placed on May 6, 2011. The long- and short-term components of our rating on the series 2006A bonds are based on our long- and short-term issuer credit ratings on, as well as the joint support provided by, the Royal Bank of Scotland PLC ('A/A-1'), the letter of credit (LOC) provider, and Constellation Energy Group Inc. ('BBB-/Watch Pos/A-3'), the obligor, assuming a low correlation level between the LOC provider and
