| Business | Phone |
| Air Cleaning Technologies Inc Fairfax 22030 | (703) 383-1341 |
| Comprehensive Environmental 8622 Lee Hwy # H, Fairfax 22031 | (703) 698-8344 |
| Consolidated Safety Svc Inc 4031 University Dr, Fairfax 22030 | (703) 691-4612 |
| Ecology & Environment Inc 8403 Arlington Blvd, Fairfax 22031 | (703) 698-0213 |
| Environmental Partners Intl 8903 Garden Gate Dr, Fairfax 22031 | (703) 280-2378 |
| Envirosurv Inc Fairfax 22031 | (703) 204-3580 |
| Refrigerant Recovery Svc Inc 12308 Popes Head Rd, Fairfax 22030 | (703) 731-3377 |
| Vista Environmental Inc Oak Hill, Fairfax 22033 | (703) 716-5542 |
| Water Resources Learning Ctr 3918 Prosperity Ave, Fairfax 22031 | (703) 289-9600 |
| Regional Environmental Hazard Fairfax 22032 | (703) 978-4020 |