PUBLIC NOTICE WASHINGTON DULLES INTERNATIONAL AIRPORT terminal/concourse redevelopment and associated development DRAFT PROGRAMMATIC ENVIRONMENTAL ASSESSMENT AVAILABLE FOR REVIEW AND COMMENT Notice of Impacts to Wetlands in Accordance with Section 2(b) of E.O. 11990, Protection of Wetlands Notice of Potential Impacts to Historic Properties in Accordance with Section 106 of the National Historic Preservation Act and Section 4(f) of the Department of Transportation Act of 1966. The Metropolitan Washington Airports Authority (Airports Authority) has prepared a Draft Programmatic Environmental Assessment (EA) to evaluate the Terminal/Concourse Redevelopment and Associated Development projects at Washington Dulles International Airport (IAD or the Airport). The Proposed Action includes the redevelopment of the Terminal/Concourse facilities at IAD, expansion of fuel storage facilities, and the development of land referred to as the South Development Area. The Airports Authority’s purpose and need for the Proposed Action being evaluated in this Draft Programmatic EA is to: accommodate current and projected passengers with permanent modern facilities that provide an acceptable level of service (LOS), which includes providing sufficient space for passenger facilities, baggage handling systems, space for concessions and other amenities, and efficient connectivity between aircraft gates and other functional areas of the passenger terminal and concourses; provide sufficient fuel storage facilities to meet projected demand with excess capacity for reserve fuel supply requirements; and provide sufficient space to meet the demand for new aeronautical and non-aeronautical support facilities. The Federal Aviation Administration (FAA) is the lead federal agency to ensure compliance with the National Environmental Policy Act of 1969 (NEPA) for airport development actions. The Draft Programmatic EA has been prepared pursuant to the requirements of Federal Aviation Administration (FAA) Order 1050.1G, FAA National Environmental Policy Act Implementing Procedures, FAA Order 5050.4B, National Environmental Policy Act (NEPA) Implementing Instructions for Airport Actions, and Department of Transportation’s (DOT) Order 5610.1D, DOT’s Procedures for Considering Environmental Impacts. This Notice also serves to notify the public that this Programmatic EA process will satisfy the public notice and comment requirements of Executive Order 11990, Protection of Wetlands. The Proposed Action includes potential impacts to 20.6 acres of wetlands and approximately 3,322 linear feet of perennial streams. It is anticipated that the project will qualify for a State Programmatic General Permit and Virginia Water Protection Permit based on further consultation with the United States Army Corps of Engineers and the Virginia Department of Environmental Quality which will include compensatory mitigation for project impacts. This public review and comment period is also being conducted pursuant to the 1987 Programmatic Memorandum of Agreement among the FAA, the Virginia State Historic Preservation Officer (VASHPO) and the Advisory Council on Historic Preservation (as regards Section 106 of the National Historic Preservation Act of 1966 – 36 CFR 800) and Section 4(f) of the DOT Act of 1966. The Virginia Department of Historic Resources (VDHR)/VASHPO has determined that a project specific Programmatic Agreement is appropriate for this project. The Programmatic Agreement outlines processes for continued design review and includes mitigation measures to address any future adverse effects to historic properties. Beginning February 5, 2026, the Draft Programmatic EA will be available for public review under the Environmental Information section of the Airports Authority website: https://www.mwaa.com/about/environmental-information. A physical copy of the Draft Programmatic EA is available at the Brambleton Branch of the Loudoun County Library: Loudoun County Library, Brambleton Branch 22850 Brambleton Plaza Brambleton, Virginia 20148 As well as the Chantilly Regional Library branch of the Fairfax County Library: Fairfax County Library – Chantilly Regional Library 4000 Stringfellow Road Chantilly, Virginia 20151 Written comments on the information disclosed in the Draft Programmatic EA may be submitted by email (preferred) or mailed to: Colleen Regotti, Planning Department Metropolitan Washington Airports Authority 1 Aviation Circle Washington, D.C. 22202 [email protected] All comments must be received no later than 5:00 PM, February 20, 2026. Please ensure adequate time for mailing. Comments can only be accepted with the full name and address of the individual commenting. Before including your address, phone number, email address, or other personal identifying information in your comment, be advised that your entire comment – including your personal identifying information – may be made publicly available at any time. While you can ask in your comment to withhold from public review your personal identifying information, it cannot be guaranteed that it will be withheld. Comments received on the Draft Programmatic EA and responses to those comments will be disclosed in the Final Programmatic EA. The Airports Authority will host an in-person and virtual public workshop from 6:00 pm to 7:00 pm Eastern Time at the Dulles Marriott Hotel on February 10, 2026 to provide information on the Draft Programmatic EA, and to solicit comments from the public. An opportunity to submit written comments will be provided during and after the public workshop. The virtual public workshop can be accessed at the link below: https://us02web.zoom.us/j/85020334182 Members of the public unable to attend the virtual public workshop or who have special communication or accommodation needs are encouraged to contact Colleen Regotti with the Airports Authority to receive a copy of presentation materials. Public workshop materials will be made available under the Environmental Information section of the Airports Authority website. IAD Terminal Concourse Redevelopment EA - DRAFT - Table of Contents & Chapters 1 to 3 (1).pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix A Planning.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix B Supplemental Exhibits.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix C Alternatives.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix D Air Quality.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix E Biological Resources.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix F Coastal.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix G DOT Section 4(f) - Redacted.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix H Farmlands.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix I HazMat.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix J Historical - Redacted.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix K Land Use_0.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix L Noise.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix M Socioeconomics.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix N Water Resources.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix O Scoping.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix P List of Preparers.pdf IAD Terminal Concourse Redevelopment EA - DRAFT - Appendix Q References.pdf Hide related content Off Editorial Section(s) Environmental Information