Tetra Tech, Inc. (NASDAQ: TTEK) announced today it was awarded an indefinite delivery, indefinite quantity contract by the U.S. Air Force for architectural-engineering services worldwide (A-E13 Environmental Services). This multiple-award contract ceiling is $500 million. Tetra Tech will support the U.S. Air Force Civil Engineer Center’s environmental program at various government installations in the United States and other worldwide locations.

Tetra Tech will provide technical services for restoration, pollution prevention, and compliance for environmental projects. Work may include all aspects of remediation systems design, advanced planning, investigations, geospatial data analysis, conceptual design, value engineering, monitoring, and optimization of environmental treatment or control systems. The base contract period is five years with two additional option years.

About Tetra Tech

Tetra Tech is a leading provider of consulting and engineering services. The Company supports commercial and government clients focused on water, environment, infrastructure, resource management, and energy. With 13,000 staff worldwide, Tetra Tech provides clear solutions to complex problems. For more information on Tetra Tech, please visit tetratech.com, follow us on Twitter (@TetraTech), or like us on Facebook.

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.