| Business | Phone |
| Cle Engineering 124 Washington Ave, Richmond 94801 | (510) 233-7199 |
| Ift Inc 213 W Cutting Blvd, Richmond 94804 | (510) 231-7885 |
| Enviro Tech Intl 2254 Highgate Dr, Richmond 94806 | (510) 243-0669 |
| F E Jordan Assoc Inc 312 9th St, Richmond 94801 | (510) 763-2400 |
| Klc Consulting Engineering 6157 Arlington Blvd, Richmond 94805 | (510) 235-3164 |