Tetra Tech Wins $200 Million U.S. Army Corps of Engineers A-E Services 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), Great Lakes and Ohio River Division, selected Tetra Tech for a $200 million, multiple-award contract to provide architectural and engineering (A-E) design services to modernize inland navigation and flood risk management infrastructure, and to restore aquatic ecosystems.

Under the five-year contract funded through the Infrastructure Investment and Jobs Act (IIJA), Tetra Tech will design and provide technical support to upgrade locks, dams, levees, hydraulic systems, waterways, and enhance ecosystems. Tetra Tech engineers and scientists will develop site assessments and master plans, conduct feasibility studies, collect and analyze data, and design infrastructure modernization and ecosystem restoration solutions.

“Tetra Tech has been providing technical A-E services to support USACE in the delivery of vital services to improve water resources infrastructure in the United States for more than 30 years,” said Dan Batrack, Tetra Tech Chairman and CEO. “We look forward to using our Leading with Science^® approach to design innovative solutions that improve critical infrastructure, support public safety, and restore the surrounding riverine environment.”

About Tetra Tech

Tetra Tech is a leading provider of high-end consulting and engineering services for projects worldwide. With 27,000 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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