2015 Top 100
58: Tetra Tech Inc.
| Top 100 Revenue: | $304,273,000 |
| Defense Revenue: | $89,725,000 |
| Civilian Revenue: | $214,548,000 |
| 2014 Revenue: | N/A |
| 2014 Earnings: | N/A |
| 2013 Revenue: | $2.6B |
| 2013 Earnings: | Loss of $1.5M |
| Number of employees: | N/A |
| Headquarters: | Pasadena, Calif. |
| Website: | www.tetratech.com |
| Leadership: | Dan Batrack, chairman, CEO, president James Pagenkopf, EVP, Federal Programs |
| Ticker: | N/A |
| Lines of business: | Consulting, technical services, design, engineering, program management |
| Major customers: | N/A |
| Major contracts/projects: | Alliant GWAC, LOGWORLD, MOBIS, OASIS, PES |