| Business | Phone |
| Clyde Woodward Consultants 1501 4th Ave # 1500, Seattle 98101 | (206) 343-7933 |
| Converse Consultants Nw 18 W Mercer St, Seattle 98119 | (206) 285-4192 |
| James Eaton Po Box 126, Seattle 98111 | (206) 682-6942 |
| Fmg Inc 830 4th Ave S, Seattle 98134 | (206) 340-4288 |
| Geostandards Corp 24 Roy St # 323, Seattle 98109 | (206) 282-2730 |