| Company | Booth | |
| A & B Environmental Services, Inc. | 436 | |
| ABASCO, LLC | 220 | |
| ACME Environmental, Inc. | 421 | |
| AER-FLO Environmental | 341 | |
| ALAMO1 | 337 | |
| ALS Global | 347 | |
| Ambipar Response | 631 | |
| Ambipar Response | 601 | |
| American Environmental & Industrial Services, LLC | 222 | |
| American Safety LLC | 234 | |
| American Salvage Association | 749 | |
| AMPOL American Pollution Control, Corp. | 706 | |