| ENVIRONMENTAL STUDIES & APPROVALS |
| FHWA Finding of No Significant Impact (June 2021) - PDF, 420 KB |
| FHWA FONSI Appendix A (June 2021) - PDF, 525 KB |
| Revised Environmental Assessment (May 2021) - PDF, 172 MB |
| NPS Section 4(f) Temporary Occupancy and De Minimis Impact Determination Concurrence (May 2021) - PDF, 3 MB |
| Fairfax County Park Authority Section 4(f) Temporary Occupancy and De Minimis Impact Determination Concurrence (May 2021) - PDF, 3 MB |
| Technical Memorandum Errata Sheet (May 2021) - PDF, 150 KB |
| National Park Service (NPS) Section 106 No Adverse Effect Concurrence (April 2020) - PDF, 160 KB |
| Environmental Assessment (February 2020) - PDF, 60 MB |
| Air Quality Tech Report (February 2020) - PDF, 9.7 MB |
| Air Quality Tech Report Appendices (February 2020) - PDF, 5.9 MB |
| Alternatives Development Technical Memo (February 2020) - PDF, 14.6 MB |
| George Washington Memorial Parkway Visualization Booklet (February 2020) - PDF, 84.1MB |
| Hazardous Materials Tech Memo (February 2020) - PDF, 1.7 MB |
| Hazardous Materials Tech Memo Appendices (February 2020) - PDF, 2.9 MB |
| Indirect & Cumulative Effects Tech Report (February 2020) - PDF, 6.2 MB |
| Natural Resources Tech Report (February 2020) - PDF, 11.8 MB |
| Natural Resources Tech Report Appendices (February 2020) - PDF, 40.7 MB |
| Section 4(f) & Section 6(f) Technical Memo (February 2020) - PDF, 11.5 MB |
| Socioeconomic and Land Use Tech Report (February 2020) - PDF, 5.7 MB |
| Cultural Resources Survey Tech Report (June 2019) - PDF, 12 MB |
| Virginia Department of Environmental Quality Approval for Virginia Stormwater Management Program regulations (January 2019) - PDF, 700 KB |
