Presbyterian Healthcare has appealed North Carolina regulators' decision to allow Carolinas Medical Center-Union to expand its emergency department in Monroe. CMC-Union is proposing a $21.5 million renovation and expansion of its ED that will include a 23,000-square-foot addition and the renovation of 8,800 square feet of existing space. The appeal will delay the project by four to six months and add to initial cost estimates, said CMC-Union representatives.