Naperville, IL-based Edward Hospital has received state permission to build an emergency center in Plainfield but continues to press its case for a hospital there. The Illinois Health Facilities Planning Board gave Edward permission to spend $5.7 million to upgrade 15 rooms, and add an ambulance port and helicopter pad at its Immediate Care Center in Plainfield. The free-standing center would take up 7,900 square feet of the 100,000-square-foot Immediate Care building.