| Business | Phone |
| Ocean Systems Engineer Corp 700 Bobwhite Pl, Philomath 97370 | (541) 929-2214 |
| William A Pendergrass Pe 24623 Old Peak Rd, Philomath 97370 | (541) 929-4132 |
| Southwood Engineering Corp 3301 Southwood Dr, Philomath 97370 | (541) 929-2533 |
| Streamline Engineering Po Box 975, Philomath 97370 | (541) 929-7478 |