| Business | Phone |
| N C Dot Roadside Environmental 12033g E Independence Blvd, Matthews 28105 | (704) 849-0929 |
| Custom Environmental Tech 3205 Pine Pointe St, Matthews 28104 | (704) 821-5456 |
| Enerdyne Power Systems Inc 131 Matthews Station St # 2a, Matthews 28105 | (704) 844-8990 |