Last year, legislators passed a bill that established the Utah Inland Port Authority. It will cover some 16,000 acres, or 25 square miles of land just west of the SLC airport; half of it north of I-80 and the other half south. The port will be comprised of warehouses, manufacturing facilities and distribution centers. Proponents of the port say it’s a unique economic opportunity that will bring jobs and connect the state directly to the flow of international trade. But opponents say, not so fast.