| Company Name | Owner Name | Address | Phone |
| AE Consulting | Allen Evans | 4507 Indian RIdge Dr Pasco, WA 99301 | 509-366-7036 |
| Anderson Engineering | Vern Anderson | P.O. Box 89 Sunnyside WA 98944 | 509-837-4454 |
| B7 Engineering | Tim Bardull | 1614 Eastway Dr Sunnyside WA 98944 | 837-8600 1-877-837-8600 |
| Golladay Surveying | Wes Golladay | 8823 Franklin Pasco WA 99301 | 542-8678 |
| HDJ Design Group | John Shen | 6115 Burden Suite E Pasco WA 99301 | 547-5119 |
| MacKay & Sposito | ? | 3321 W. Kennewick Ave Suite 220 Kennewick WA 99336 | 509-374-4248 |
| Martin Engineering, P.L.L.C. | Steve Martin | 1530 Maple Grove Road Sunnyside WA 98944 | (509) 837-6607 |
| Meier Associates | Steve Anderson | 6303 Burden Blvd Kennewick WA 99336 | 509-735-1589 |
| Minister & Glaeser Surveying | Edmond Denny Jr | 6303 Burden Blvd Pasco, WA 99301 | 509-544-7802 |
| Permit Surveying | Daniel Strasser | 2245 Robertson Drive Richland WA 99352 | 509-375-4123 |
| Robert G. Reynolds | ? | 807 Court Street Prosser WA 99350 | 509-786-7713 |
| Rogers Surveying | Gary Wagner | 1455 Columbia Park Trail Richland WA 99352 | 509-783-4141 |
| Routh Consulting Engineers | Rick Routh | POB 3187 Pasco WA 99302 | (509) 547-8262 |
| Septic Design Specialists | Janoah Nicholls | 301 Brathovde Selah WA 98942 | (509) 949-1275 |
| Stratton Surveying & Mapping | Aaron Dyck | 7525 W Deschutes Place #1C Kennewick WA 99336 | 509-795-7364 |
| Valdez Geological | Louis Valdez | 111 N 25th Ave Yakima WA 9933 | ? |
| White Shield, Inc. | ? | P.O. Box 477 Grandview WA 98930 | (509) 882-1144 |
| Worley Surveying Service Inc | Richard Russum | P.O. Box 6132 Kennewick WA 99336 | 509-582-6716 |
| Worley Surveying Service, Inc. | ? | P.O. Box 6132 Kennewick WA 99336 | (509) 582-6716 |