| Business | Phone |
| Western Technologies Inc 278 Sawyer Dr # 2, Durango 81303 | (970) 375-9033 |
| Wilbur Engineering Inc 1060 Main Ave, Durango 81301 | (970) 247-1488 |
| Wright Water Engineers Inc 1666 Main Ave # C, Durango 81301 | (970) 259-7411 |
| Veco Rocky Mountain Inc 484 Turner Dr # B # 4, Durango 81303 | (970) 259-7211 |
| Trigon Sheehan 126 Rock Point Dr # B, Durango 81301 | (970) 385-9100 |
| Trigon-Sheehan 150 Rock Point Dr, Durango 81301 | (970) 382-0917 |
| Urs Corp 10 Burnett Ct # 113, Durango 81301 | (970) 259-9212 |
| Basin Engineering Inc 98 Everett St, Durango 81303 | (970) 259-2078 |
| Brandsma Engineering 102 E 8th St # 203, Durango 81301 | (970) 259-3487 |
| Russell Engineering Inc 1022 Main Ave, Durango 81301 | (970) 385-4546 |
| Sagle & Schwab Energy Resource 2223 Main Ave, Durango 81301 | (970) 259-2701 |
| Forerunner Corp 211 Rock Point Dr # 101, Durango 81301 | (970) 375-7767 |
| Harris Water Engineering 954 E 2nd Ave, Durango 81301 | (970) 259-5322 |
| M E & E Engineering 463 Turner Dr # 104a, Durango 81303 | (970) 385-1570 |
| Lewis Engineering & Consulting 807 E 31st St, Durango 81301 | (970) 375-7117 |