CHARLESTON, S.C. - In opposing not one, not two, but three competing surgery centers, CareAlliance Health Services made the same argument to state government officials: There was plenty of capacity for outpatient surgeries at its two hospitals, Roper and Bon-Secours-St. Francis Xavier. So convincing were those arguments that the certificates of need (CON) for all three surgery centers continue to be tied up in the appeals process and the facilities still stuck to the drawing board.