One of the problems is thought to be how the rail link from Liverpool Street will cope with the extra passengers using Stansted. BAA has already invested £13million in early design and preparation for the planning application for the new runway, and £16m on property compensation. Public consultation on BAA's proposed location for the new runway is due to start in November and an environmental impact assessment, together with public consultation on the airport draft final masterplan, will take place in autumn next year.