| Business | Phone |
| Del Valle & Assoc 215 W Pomona Blvd, Monterey Park 91754 | (323) 728-9471 |
| Innovative Engineering Group 2501 Davidson Dr # 200, Monterey Park 91754 | (323) 262-9199 |
| Rkm Consulting Engineer 215 W Pomona Blvd # 209, Monterey Park 91754 | (323) 727-0416 |