Tetra Tech Wins $36 Million USACE Flood Risk Reduction Contract

Tetra Tech, Inc. (NASDAQ: TTEK), a leading provider of high-end consulting and engineering services, announced today that the U.S. Army Corps of Engineers (USACE) awarded Tetra Tech a six-year, multiple-award contract to assess and manage flood risks, reduce coastal erosion, and restore ecosystems.

Tetra Tech engineers, biologists, and planners will perform site characterization studies, conduct biological surveys, and develop engineering designs to improve the resilience of navigation channels and shorelines. Using predictive modeling and advanced analytics, our team will design innovative structural and non-structural resilient infrastructure solutions, such as living shorelines and sustainable marshes and wetlands to reduce impacts from storm events.

“The increased severity of storm events and rising sea levels in coastal regions has placed additional stress on our coastal infrastructure,” said Dan Batrack, Tetra Tech Chairman and CEO. “Tetra Tech looks forward to continuing to use our Leading with Science® approach to support the USACE in reducing flood risks and promoting resilient infrastructure.”

About Tetra Tech

Tetra Tech is a leading provider of high-end consulting and engineering services for projects worldwide. With 20,000 associates working together, Tetra Tech provides clear solutions to complex problems in water, environment, sustainable infrastructure, renewable energy, and international development. We are Leading with Science® to provide sustainable and resilient solutions for our clients. For more information about Tetra Tech, please visit tetratech.com or follow us on LinkedIn, Twitter, and 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 Form 10-Q filings with the Securities and Exchange Commission.

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Jim Wu, Investor Relations Charlie MacPherson, Media & Public Relations [phone]