Sound Transit and the King County Council signed a new joint-operations agreement in June 2002, leaving King County Metro as owners of the tunnel and Sound Transit responsible for paying part of the tunnel's debt service at an estimated cost of $65 million. The agreement would allow for buses and light rail trains to share the tunnel and its stations beginning in 2009, after a two-year closure for renovations. A separate agreement signed in May 2003 selected King County Metro as the operator of the light rail line.