 The proposed route of the pipeline crosses the eastern part of the Nebraska Sandhills; opponents of the route cite the risk to the Ogallala Aquifer posed by the possibility of contamination from spilled dilute bitumen.Pipeline industry spokesmen have noted that thousands of miles of existing pipelines carrying crude oil and refined liquid hydrocarbons have crossed over the Ogallala Aquifer for years, in southeast Wyoming, eastern Colorado and New Mexico, western Nebraska, Kansas, Oklahoma, and Texas.The Pioneer crude oil pipeline crosses east-west across Nebraska, and the Pony Express pipeline, which crosses the Ogallala Aquifer in Colorado, Nebraska, and Kansas, was being converted as of 2013 from natural gas to crude oil, under a permit from the Federal Energy Regulatory Commission.