| Business | Phone |
| G A Escobar Assoc Inc 402 Main St, Longmont 80501 | (303) 678-5222 |
| Highlands Engineering Inc 230 Main St, Longmont 80501 | (303) 651-9787 |
| Knechtel Engineering Ltd 410 Main St, Longmont 80501 | (303) 772-3020 |
| Scott Cox & Assoc Inc 500 Kimbark St # 101, Longmont 80501 | (303) 702-0661 |