Metropolitan Washington Airport Authority

Dulles International Airport

Dulles New Runways Environmental Impact Statement - Study Information

Study Description
Under the National Environmental Policy Act (NEPA), federal agencies are required to conduct an Environmental Impact Statement (EIS) for major federal actions with the potential for significant impacts to the environment. The study team has explored alternatives for meeting the projected demand for air transportation and the potential impact of the alternatives on the environment. NEPA does not require that the alternative with the least impact be adopted; it requires that the impacts of alternatives be identified, disclosed and considered in the decision. Read more about NEPA. 

The EIS evaluates environmental impacts and identifies mitigation measures for the following development projects

  • 9,473 feet long located 4,300 feet west of existing Runway 1L/19R;
  • Construction of a new 10,500-foot east-west oriented runway (12R/30L) located 4,300 feet south of existing Runway 12/30;
  • Acquisition of 448 acres of property on the west side of the airport to accommodate FAR Part 77 clearance surfaces, a RPZ, and buffer area;
  • Construction and operation of a new full-length parallel taxiway on the east side of new Runway 1L/19R;
  • Construction and operation of taxiway connectors between new Runway 1W/19W and existing Runway 1L/19R;
  • Construction and operation of a new full-length parallel taxiway on the north side of new Runway 12R/30L;
  • Construction and operation of taxiway connectors between new Runway 12R/30L and existing Runway 12/30;
  • Construction and operation of crossfield taxiways between existing Runway 30 and Taxiway “J5”;
  • Installation and operation of NAVAIDS for New Runways 1W/19W and 12R/30L including high-update radar/monitoring equipment, localizer antennas, glideslope antennas, Precision Approach Path Indicators (PAPIs), runway visual range (RVR) equipment, Inner Marker (IM), Far Field Monitor (FFM), High Intensity Approach Lighting System with Sequenced Flashers (ALSF-2), and Touchdown Zone Lighting (TDZL);
  • Tier 3 Concourse development;
  • Construction and operation of the APM from the Tier 2 Concourse to the Tier 3 Concourse;
  • Obtain State Water Quality Section 401 certification and U.S. Army Corps of Engineers (USACE) Section 404 wetland fill permit prior to start of construction and implementation of mitigation measures;
  • Changes in air traffic procedures;
  • Implementation of new flight procedures for arrival and departure operations on the new runways;
  • Support facility improvements; and
  • Relocation of NOAA/NWS Sterling facilities. NOAA is preparing separate NEPA documentation from this FAA EIS that will contain an evaluation of NOAA/NWS facility relocation alternatives, a detailed analysis of environmental impacts, selection of a Preferred Alternative, and description of mitigation measures. FAA and NOAA/NWS will be coordinating their respective decisions regarding any required property transfer to MWAA and relocation of NOAA/NWS facilities.

View Related Maps
Proposed Runways Aerial Image
Study Area

Types of Data Analyzed
The FAA has established several environmental resource categories that were considered during this project. These resource categories are listed below:

Air Quality
Water Quality
Compatible Land Use
Socioeconomic Impacts
Coastal Resources
Department of Transportation Act, Section 4(f) Lands
Historic, Architectural, Archaeological, and Cultural Resources
Floodplains and Floodways
Fish, Wildlife, and Plants
Hazardous Materials and Solid Waste
Secondary (Induced) Impacts
Natural Resources and Energy Supply
Light Emissions and Visual Impacts
Wild and Scenic Rivers
Construction Impacts
Environmental Justice
Children's health and safety