| Business | Phone |
| Adk Environmental 18037 W Little York Rd, Katy 77449 | (281) 858-0052 |
| Earth Measurement Corp 5130 Franz Rd 300, Katy 77493 | (281) 829-5700 |
| Enviro Remediation Coating Svc 19951 Sand Creek Ct, Katy 77449 | (281) 398-3595 |
| Hanby Environmental Lab Proced 6817 Us Highway 90, Katy 77494 | (281) 391-4257 |