HEI logo

Tetra Tech HEI's unique combination of technical expertise and commitment to customer success make us a preferred partner to accomplish national security, environment and energy missions


  • Established in 1994
  • Headquartered in Oak Ridge, Tennessee
  • Active GSA Federal Supply Schedule

Tetra Tech HEI has a strong record of performance in providing technical services to U.S. Government organizations, government contractors and private industry. Current and past customers include:

  • B&W Y-12 (Y-12 National Security Complex)
  • DOE Portsmouth/Paducah Project Office
  • UT-Battelle (Oak Ridge National Laboratory)
  • Restoration Services, Inc.
  • Keane, Inc. (FBI/DOJ support)
  • Sandia Corporation (Sandia National Laboratory)
  • B&W Pantex (Pantex Plant)
  • Los Alamos National Laboratory
  • Savannah River Site
  • National Security Technologies (Nevada National Security Site)
  • National Nuclear Security Administration
  • Hanford Site - Richland, Washington
  • Brookhaven National Laboratory
  • United States Enrichment Corporation (USEC)

Related Links

HEI Added Value