NEW YORK (Standard&Poor's) May 15, 2006--Standard&Poor's Ratings Services placed its 'AA-/A-1+' rating on 83 Wachovia Bank N.A., N.C. letter of credit-backed issues listed below on CreditWatch with positive implications. This action follows Standard&Poor's May 8, 2006, placement of Wachovia Bank N.A. on CreditWatch with positive implications. Issue Description Ocean Hwy&Port Auth adj demand wkly mode ser 1990 Capital Area Cultural Educl Facs Fin Corp (Central TX Summit Christian Sch Sys, Inc.) adj Rate dem rev bnds (Summit Christian Academy Proj) ser 2006 South Carolina St Hsg Fin&Dev Auth (Rocky Creek SC, LP) multifam rental hsg rev bnds (Rocky Creek Apts Proj) ser 2006 Philadelphia Auth for Indl Dev (Chemical Heritage