Tetra Tech Awarded $500 Million USACE Environmental Remediation Multiple-Award Contract

Tetra Tech, Inc. (NASDAQ: TTEK), a leading provider of high-end consulting and engineering services in water, environment, and sustainable infrastructure, announced today that the U.S. Army Corps of Engineers (USACE), Baltimore District, awarded the Company a $500 million, multiple-award contract to provide comprehensive environmental engineering and technical services for cleanup programs in the mission areas of the North Atlantic Division (NAD), with projects in the contiguous United States (CONUS), Alaska, Hawaii, and Puerto Rico.

Under this 5-year contract, Tetra Tech will provide advanced technical, management, and environmental services to support USACE to safely identify, recover, and remediate hazardous, toxic, and radiological waste at military and non-military locations. Tetra Tech’s team of scientists, engineers, and specialists will use AI-supported field data collection and GIS, 3D visualizations, and other advanced technologies that are part of the Tetra Tech Delta solutions platform.

“Tetra Tech has supported the U.S. Department of Defense for nearly 60 years including addressing potentially harmful contaminants at its facilities and in the surrounding environment,” said Dan Batrack, Tetra Tech Chairman and CEO. “We are pleased to use our differentiated Tetra Tech Delta solutions and Leading with Science^® approach to provide USACE Baltimore with class-leading capabilities to protect the safety and health of our service members, communities, and environment.”

About Tetra Tech

Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end consulting and engineering services for projects worldwide. With more than 25,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science^® to address the entire water cycle, protect and restore the environment, and design sustainable and resilient infrastructure. For more information about Tetra Tech, please visit tetratech.com or follow us on LinkedIn 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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