| Company | Booth | |
| E3 Environmental | 501 and 701 | |
| EHS Support LLC | 230 | |
| Elastec, Inc. | 629 | |
| EMSI | 331 | |
| EnviroCon Systems Inc. | 419 | |
| Environmental Restoration LLC | 520 | |
| EnviroServe, a Savage Company | 511 | |
| ERTS (Emergency Response & Training solutions) | 709 | |
| Evans Equipment & Environmental | 226 | |