All 5 companies
A–Z by legal name| Company | Registry number | Registered | Status | City |
|---|---|---|---|---|
| PARSONS TECHNICAL SERVICES INC. | FB027329 | 2003-05-20 | Active | PASADENA |
| PARSONS WATER & INFRASTRUCTURE INC. | FB027328 | 2003-05-20 | Active | PASADENA |
| TETRA TECH EC, INC. | FB027062 | 2003-02-24 | Active | PASADENA |
| UNITED AGENCIES, INC. D/B/A UNITED OF CALIFORNIA, INC. | FB027421 | 2003-06-20 | Active | PASADENA |
| WESTPORT PETROLEUM, INC. | FB027039 | 2003-02-12 | Inactive | PASADENA |