 The system included a line in Tacoma, Washington, and another line from the University District in north Seattle to Sea-Tac Airport south of Seattle, originally planned to open in 2006.Two years later the recently created Sound Transit revealed an environmental impact study that increased the cost of the project to US$2.2 billion and added three miles to the line by adding connections to Northgate.However, the EIS was quickly met with objections from the poorer neighborhoods south Seattle in Rainier Valley that complained that the plan unfairly impacted their neighborhoods by having the line running on the surface instead of below ground like much of the rest of the route starting at Beacon Hill.