1. WSP Parsons Brinckerhoff, 3340 Peachtree Rd. NE, Atlanta, GA 30326.
2. WSP Parsons Brinckerhoff; presently, HNTB, 3715 Northside Pkwy NW #600, Atlanta, GA 30327.
3. Langan Engineering and Environmental Services, Inc., Parkside Corporate Center, 15150 NW 79th Court, Suite 200, Miami Lakes, Miami, FL 33016.
4. Berkel & Co. Contractors, Inc., 7300 Marks Ln., Austell, GA 30168.