Metropolitan Washington Airport Authority

Dulles International Airport

Dulles Concourse and Related Projects Environmental Assessment

The purpose of this Environmental Assessment (EA) was to evaluate existing conditions and environmental effects for building a new, permanent midfield concourse to replace the existing Concourse C/D that was built as a temporary facility in the 1980's. The Proposed Action (Build Alternative) included these four elements: Tier 2 Concourse (New permanent Concourse C), an Automated People Mover (APM) System and south utilities and support facilities.

The Tier 2 Concourse is the major component of the Proposed Action (Build Alternative). The new concourse will replace the existing Concourse C/D, which has neither the necessary space nor appropriate updated passenger amenities to serve present-day or future needs of United Airlines, the largest airline at IAD and the principal tenant on the existing Concourse C/D. The project will consist of the construction of a permanent midfield concourse south of the existing Concourse C/D. In addition, a baggage tunnel containing a baggage conveyor system, a tug tunnel, and a pedestrian walkback tunnel will be constructed as part of the Tier 2 Concourse project. After completion of the new concourse, existing Concourse C/D will be demolished.

Another major project that is part of this study includes the construction of the Automated People Mover System (APM). The APM system project will consist of a new underground train system that will connect the midfield concourses and the Main Terminal. The train system will be electric-powered and will substantially reduce the use of the existing Mobile Lounge service. The project will include 6 miles of tunnels, eight stations, and connections to the Main Terminal, to the concourses, and to a maintenance facility. Two separate APM systems will be constructed: one for domestic passengers and one for arriving international passengers.

In August 2002, FAA determined a Finding of No Significant Interest.

Dulles Concourse and Related Projects Final Environmental Assessment (Executive Summary)

Dulles Tier 2 EA - Executive Summary (PDF, 9pages, 346KB )

Dulles Concourse and Related Projects Final Environmental Assessment (Entire Document)  

Dulles Tier 2 EA(PDF, 623 pages, 52,762KB )

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