| Business | Phone |
| Berger/Abam Engineers Inc 33301 9th Ave S 300, Federal Way 98003 | (253) 925-2300 |
| Consoer Townsend Envirodyne 33600 6th Ave S 218, Federal Way 98003 | (253) 874-8887 |
| Earth Tech Inc 720 S 333rd St 200, Federal Way 98003 | (253) 838-6202 |
| Engineering Consultant 30254 24th Ave Sw, Federal Way 98023 | (253) 927-5521 |
| Esm Consulting Engineers Llc 33915 1st Way S 200, Federal Way 98003 | (253) 838-6113 |
| Fmsi Consulting 29427 19th Ave S, Federal Way 98003 | (253) 529-0439 |
| Global Compliance Svc 402 S 333rd St # 134, Federal Way 98003 | (253) 929-1591 |