| Business | Phone |
| Amend Group 22020 Uunet Dr, Ashburn 20147 | (703) 886-4013 |
| Black & Veatch Corp 21254 Loudoun County Pkwy, Ashburn 20147 | (703) 723-6585 |
| Enertech 20693 Rainsboro Dr, Ashburn 20147 | (703) 724-1758 |
| Jacobs Engineering 19710 Janelia Farm Blvd, Ashburn 20147 | (703) 726-6100 |