| Business | Phone |
| Clark-Tech Environmental Systs 1515 Globe St, Houston 77034 | (713) 944-0497 |
| A & M Environmental Inc 5975 Armour Dr, Houston 77020 | (713) 678-7519 |
| Aar Inc 6640 Signat Dr, Houston 77041 | (713) 466-6800 |
| Aeq Inc 3727 Trout St, Houston 77093 | (713) 672-8559 |
| Amx Enterprises Inc 8701 Gulf Fwy, Houston 77017 | (713) 378-9911 |
| Aramsco 2508 Fairway Park Dr, Houston 77092 | (713) 263-7011 |
| Arc Abatement Inc 6630 Roxburgh Dr, Houston 77041 | (713) 849-7738 |
| Arrow Services Inc 410 Northville St, Houston 77037 | (281) 445-1246 |
| Cst Environmental Inc 16421 Aldine Westfield Rd, Houston 77032 | (281) 449-5911 |
| Environmental Waste & Plltn 8989 Westheimer Rd, Houston 77063 | (713) 783-0348 |
| Lvi Environmental Svc Inc 10500 Telephone Rd, Houston 77075 | (713) 991-0480 |
| Hal Inc 5311 Petty St, Houston 77007 | (713) 880-8264 |