| Business | Phone |
| Williams Earth Sciences 11329 Distribution Ave W, Jacksonville 32256 | (904) 262-8852 |
| Wolf Technologies Inc 3047 St Johns Bluff Rd S # 4, Jacksonville 32246 | (904) 997-1400 |
| Atlantic Geotechnical & Envrn 9556 Historic Kings Rd S # 107, Jacksonville 32257 | (904) 886-0766 |
| Cal-Tech Testing Inc 6919 Distribution Ave S # 5, Jacksonville 32256 | (904) 262-4046 |
| Civil Services Inc 2394 Saint Johns Bluff Rd S, Jacksonville 32246 | (904) 641-1834 |
| Saliba Engineering Inc 7506 Galveston Ave, Jacksonville 32211 | (904) 726-5355 |
| Nodarse & Assoc Inc 6950 Philips Hwy # 2, Jacksonville 32216 | (904) 296-0331 |