1. Arcadis, Annapolis, Maryland, USA
2. Arcadis, Raleigh, North Carolina, USA
3. Geosyntec Consultants, Portsmouth, New Hampshire, USA
4. Ramboll Environ, Portland, Maine, USA
5. The Loper Group, Inc., Seabrook, Texas, USA
6. TEA, Inc., Baton Rouge, Louisiana, USA