Tetra Tech Awarded Airspace Optimization Support Contract

Tetra Tech, Inc. (NASDAQ: TTEK), a leading provider of high-end consulting and engineering services, announced today that it has been awarded a technical assistance contract by the U.S. Trade and Development Agency (USTDA) to support Mexico’s civil aviation program. Under this 18-month contract, our technology and aviation experts will optimize airspace communications, navigation, surveillance, and air traffic management.

Tetra Tech will use simulation models and advanced data analytics to develop a phased national civil aviation master plan for the Mexican Federal Civil Aviation Agency. We will apply Tetra Tech’s patented Volans software as a service (SaaS) technology to provide optimized airspace capacity, economic analysis, and environmental solutions. This project is a priority for the Mexican government to carry out its mandate of air traffic management oversight in the country.

“The Tetra Tech Federal IT Group has provided lifecycle services to support the Federal Aviation Administration and other international aviation authorities in their mission to deliver safe, efficient, and sustainable airspace for more than 20 years,” said Tetra Tech Chairman and CEO Dan Batrack. “We are pleased to use our cutting-edge Volans technology to support USTDA and the Mexican civil aviation program in this critical transportation infrastructure project that will improve aviation performance, operations, and safety as part of Mexico’s multi-year National Infrastructure Program.”

About Tetra Tech

Tetra Tech is a leading provider of high-end consulting and engineering services for projects worldwide. With 21,000 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]