NEW YORK (Standard&Poor's) Sept. 5, 2001--Standard&Poor's today assigned its double-'A' rating to Jacksonville Economic Development Commission, Fla.'s $100 million fixed-rate securities health care revenue bonds series 2001B, issued for the Mayo Foundation, headquartered in Rochester, Minn. The bonds are scheduled to sell Sept. 11, 2001. In addition, Standard&Poor's lowered its rating to double-'A' from double-'A'-plus on long-term debt issued by Jacksonville Health Facilities Authority, Fla.; Maricopa County Industrial Development Authority, Ariz.; Rochester, Minn.; and Wisconsin Health and Educational Facilities Authority for the Mayo Foundation. The outlook is stable. The short-term ratings of bonds outstanding that carry both a long and short -term rating are unaffected by this action, as the short-term ratings reflect SBPAs