A non-profit group tasked with improving airports and air transportation in the Washington, D.C., region made recommendations on Tuesday that could trim nearly $800 million from the skyrocketing costs of the Dulles Rail project.

The suggestions by Dulles-based Washington Airports Task Force are the first public moves to end to the impasse between the Metropolitan Washington Airports Authority, which runs the project, and angry Virginia officials, whose constituents paying for it.