The U.S. Department of Energy (DOE) prepared an Environmental Assessment to analyze the potential environmental impacts from the proposed upgrade and operation of the Continuous Electron Beam Accelerator Facility (CEBAF) and Free-Electron Laser (FEL) accelerators and the construction and use of buildings associated with the 2005 Ten-Year Site Plan at the Thomas Jefferson National Accelerator Facility (TJNAF or Jefferson Lab) in Newport News, Virginia.