U.S. EPA Awards Tetra Tech $51 Million Technical Assessment and Response Contract

Tetra Tech, Inc. TTEK announced today that the U.S. Environmental Protection Agency (EPA) Region 7 awarded the Company a five-year, $51 million contract to provide scientific and technical support services to the Superfund Technical Assessment and Response Team (START V).

Under this single-award contract, Tetra Tech will support EPA Region 7 in protecting human health and the environment in response to man-made and natural disasters and emergencies. Specific services include emergency preparedness, response, and prevention; Superfund and brownfields site assessments; monitoring and analysis; data management; and training. The primary geographic scope of the contract is within EPA Region 7, which serves Iowa, Kansas, Missouri, Nebraska, and nine tribal nations. This is Tetra Tech's fourth consecutive EPA Region 7 START contract.

"Tetra Tech has supported EPA's START programs for more than 20 years," said Dan Batrack, Tetra Tech Chairman and CEO. "We are pleased to continue our support to EPA Region 7 to help make communities and the environment more resilient to disasters."

About Tetra Tech

Tetra Tech is a leading, global provider of consulting and engineering services. We are differentiated by Leading with Science^® to provide innovative technical solutions to our clients. We support global commercial and government clients focused on water, environment, infrastructure, resource management, energy, and international development. With more than 17,000 associates worldwide, Tetra Tech provides clear solutions to complex problems. For more information about 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.

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