SAN FRANCISCO (Standard&Poor's) June 30, 2010--Standard&Poor's Ratings Services assigned its 'A-1+' short-term rating to Los Angeles Harbor Department , Calif.'s $200 million commercial paper (CP) program supported by a line of credit agreement from JPMorgan Chase Bank National Association (AA-/Negative/A-1+). At the same time, Standard&Poor's affirmed its 'AA' long-term rating and underlying rating (SPUR) on the port's outstanding $909 of million senior-lien revenue bonds. The outlook on the long-term rating is stable. "The rating on the CP program reflects our view of the senior-lien revenue pledge, the port's strong long-term credit quality, and liquidity support provided by a line of credit," said Standard&Poor's credit analyst Mary Ellen Wriedt. "The long-term rating is