- Afinar
- Cornerstone Engineering Inc
- De Walt Corp
- Delmarter & Deifel
- Fas Engineering & Surveying
- Frank Slinkard Engineering
- French & Assoc
- Jerry L Hendricks Consulting
- Keith Companies Inc
- Project Design Consultants
- Quad Knopf Land Development
- Quadknopf Land Development Svc
- Ruettgers & Schuler
- San Joaquin Engineering Inc
- T W Collins Assoc
- Willdan
