Contra Costa County
Local NEHA certified Radon Measurement Specialists
Certified Radon Inspectors
NEHA Certified Radon Measurement Specialists
| Company | Inspector | Phone | City | County |
| AEI Consultants | Alain Grissette | (925) 746-6000 | Walnut Creek | Contra Costa |
| Weiss Associates | Tim Utterback | (510) 450-6193 | Emeryville | Alameda |
| Kellco Services, Inc. | Bonnie Lee Kellogg | (510) 786-9751 | Hayward | Alameda |
| Forensic Analytical | Joseph F. Filan | (510) 266-4612 | Hayward | Alameda |
| Forensic Analytical | Gustavo A. Delgado | (510) 887-8828 | Hayward | Alameda |
| Kellco Environmental Services | Derrick Quach | (510) 786-9751 | Hayward | Alameda |
| SCA Environmental, Inc | Sally Mills | (510) 282-9146 | Oakland | Alameda |
| SCA Environmental, Inc | David Ellis | (510) 459-8233 | San Francisco | San Francisco |
| ProTech Consulting & Engineering | Ronald Mason | (650) 569-4020 | Redwood City | San Mateo |