| Business | Phone |
| Amec Earth & Environmental 520 E North Foothills Dr 600, Spokane 99207 | (509) 482-0104 |
| Oil Re-Fining 11916 E Empire Ave, Spokane 99206 | (509) 928-4008 |
| Nrc 4031 E Trent Ave, Spokane 99202 | (509) 536-5960 |
| Vcs Lab 10212 E 9th Ave, Spokane 99206 | (509) 891-2836 |
| Cleaninspiration Spokane 99201 | (509) 838-3300 |
| Environmental West Po Box 11095, Spokane 99211 | (509) 454-0137 |
| Water & Natural Resource Group Po Box 28755, Spokane 99228 | (509) 468-4876 |