| Business | Phone |
| Economic & Engineering Svc 1601 William Way, Mount Vernon 98273 | (360) 424-0909 |
| G & D Consultants 926 N 14th St, Mount Vernon 98273 | (360) 428-2630 |
| Metaphor Consulting 1615 E Section St, Mount Vernon 98274 | (360) 424-1516 |
| William S Arnett Consulting 2716 Iroquois Dr, Mount Vernon 98273 | (360) 416-6564 |