Standard&Poor's Ratings Services assigned its 'BBB+' rating, and stable outlook, to St. Charles Parish Hospital Service District No. 1, La.'s series 2006 GO bonds. Standard&Poor's also affirmed its 'BBB+' rating, and stable outlook, on the district's pre-existing GO debt. An unlimited ad valorem tax pledge of the district, which is coterminous with St. Charles Parish, La. ('A'/Stable GO debt rating), secures the series 2006 bonds. The rating reflects the district's: Weak financial position, and Highly concentrated economy and property tax base centered on oil and chemical refineries. The parish's sizable property tax base and the district's moderate debt burden compared to market value somewhat offset these weaknesses. St. Charles Parish Hospital Service District No. 1, which