| Geo-Tech Explorations 19700 SW Teton Ave (503)692-6400 | Collins & Sons Excavating Inc PO Box 1842 (541)548-6050 | Marshall Associated Contractors Inc 10400 SW Herman Rd (503) 692-1350 |
| Berryhill Brothers Excavation 20897 SW Scholls Sherwood Rd (503)625-1611 | Twin Lakes Construction Inc 20400 SW Finnigan Rd (503)538-0320 | Liberty Rock Products Inc 43574 Wiley Creek Dr (541) 367-2811 |
| Mr Dirt 10520 W Evans Creek Rd (541)582-1825 | Harold Hardesty 1291 Oak St (541)482-9461 | Jim Hicks Excavating Po Box 697 (503) 266-5975 |
| Otto's Backhoe 4693 Fir Dell Dr SE (503)364-1522 | Custom Excavating by Dean Larson Inc 34661 Airport Lane (503)861-6030 | Angels Excavating 21820 SW Johnson St (503) 356-0549 |
| Eells Clint Excavating 410 Lancelot Ln (541) 476-5974 | High Tower Prefab Highway 26 W (541)575-0245 | Daryle Smith Construction 3072 Nothwest Antler (541) 923-6013 |
| Rod Collman Construction 14601 SE 312th Ave (503)319-7653 | Tim Cayton General Contracting 1030 NW Hillside Dr (541)476-3044 | Pacific Rock Products LLC 25000 S Barlow Rd (503) 266-6997 |
| Alpine West Enterprises Inc 7261 Pineridge Dr (541)779-9886 | Coast Poured Wall Inc 1235 17th Pl (541) 902-1492 | Winegar Excavating 30461 Old Bates Rd (541)820-4323 |
| Laskey-Clifton Corp PO Box 50 (541)271-2213 | J-H Excavation PO Box 1137 (541)549-4681 | Bill Booker Construction 30600 SE Springhill Rd (503) 695-3365 |
| Camrock Excavation PO Box 1228 (503)558-9819 | Kwik Kerb Northwest 5235 SW 190th Ct (503) 642-4088 | Hescock & Sons Excavating Inc 517 Putnam Valley Rd (541) 836-2696 |
| May Rock & Excavating PO Box 319 (541)482-2289 | A J Gaunt & Son Water Well 28695 Highway 47 (503)985-7999 | M B Excavation Inc 11808 Duck Inn Rd NE (503) 792-4259 |
| E J Excavation & Construction PO Box 596 (503)544-9265 | Western Utitlity & Excavation 25720 S Beavercreek Rd (503)632-0777 | Morse BROS Inc 12000 SW Tonquin Rd (503) 692-8242 |
| Mountain West Utility Services Inc Po Box 575 (503) 723-5277 | Armore Seal Coating and Striping 12935 Noblewood Ave (503) 650-1370 | Eyman Equipment Inc 9718 S Barnards Rd (503) 266-2567 |
| Bradford Excavating PO Box 142 (541)446-3330 | Mid-Columbia Excavation Inc 535 NE Columbia Ave (541) 481-5531 | B J Equipment CO 34964 Highway 58 (541) 747-6261 |