| Business | Phone |
| Ayr Environmental Systems 459 Chippendale Dr, Rockwall 75032 | (972) 722-8268 |
| Indoor Environmental Cnsltnts Rockwall 75087 | (972) 772-3571 |
| Starboard Environmental Audit 7100 Odell Ave, Rockwall 75087 | (972) 771-2254 |
| North Texas Fire Academy 495 National Dr, Rockwall 75032 | (972) 772-3473 |