Development has paused on a proposed railway that would haul millions of gallons of crude oil through Colorado after a federal appeals court on Friday found significant deficiencies in analyses of potential environmental impacts like increased wildfire risk and potential spills into the Colorado River basin. A coalition of private companies and seven Utah counties intended to build the 88-mile Uinta Basin Railway Project to connect Utah’s oil fields in the 12,000-square-mile basin to the national rail network.