Tetra Tech Awarded $25.6 Million to "Green" Southern California Ports

PASADENA, Calif.--(BUSINESS WIRE)--Tetra Tech, Inc. (NASDAQ: TTEK) announced today that it has been awarded new work with the Port of Los Angeles and Port of Long Beach (collectively known as the San Pedro Bay Port Authority) with an estimated maximum value of $25.6 million over the next five years.

The majority of the new work will focus on the Clean Trucks Program jointly developed by the ports under the San Pedro Bay Ports Clean Air Action Plan. The program is designed to reduce truck air pollution at the ports by 80 percent by 2012. Tetra Tech will provide administrative, technical, and environmental support for the truck fleet modernization effort.

Tetra Tech is also providing technical assistance to both ports under recently awarded air quality services, environmental assessment, and remediation contracts.

The Port of Los Angeles and the Port of Long Beach are two of the world's busiest seaports and together are the leading gateway for trade between the United States and Asia. Tetra Tech has provided environmental and coastal engineering services at these ports for more than 15 years.

About Tetra Tech (www.tetratech.com)

Tetra Tech is a leading provider of consulting, engineering, and technical services. With approximately 8,500 associates located in the United States and internationally, the Company supports commercial and government clients in the areas of resource management and infrastructure. Tetra Tech’s services include research and development, applied science and technology, engineering design, program management, construction management, construction, and operations and maintenance.

Any statements made in this release that are not based on historical fact are forward-looking statements. Any forward-looking statements made in this release represent management’s best judgment as to what may occur in the future. However, Tetra Tech’s actual outcome and results are not guaranteed and are subject to certain risks, uncertainties and assumptions ("Future Factors"), and may differ materially from what is expressed. For a description of Future Factors that could cause actual results to differ materially from such forward-looking statements, see the discussion under the section "Risk Factors" included in the Company’s Form 10-K and 10-Q filings with the Securities and Exchange Commission.

Tetra Tech, Inc.
Jorge Casado, Investor Relations
Talia Starkey, Media & Public Relations
626-351-4664