USACE Awards Tetra Tech $950 Million Contract for Environmental Remediation Services

Tetra Tech, Inc. TTEK announced today that it was one of seven contractors selected by the U.S. Army Corps of Engineers (USACE), Engineering and Support Center, Huntsville (Huntsville Center), for an indefinite delivery indefinite quantity contract valued at $950 million. Under the five-year International Remediation and Environmental Services contract, Tetra Tech will provide comprehensive environmental remediation services to the Department of Defense outside the continental United States (OCONUS).

Tetra Tech will work with Huntsville Center to safely identify, recover, and remediate hazardous, toxic, and radiological waste in OCONUS, with an initial focus on regions in Iraq and Afghanistan. Tetra Tech will provide technical services to address human health and environmental risks including engineering evaluations, sampling and analysis, and remedial or removal actions.

"Tetra Tech has supported the U.S. Army's environmental clean-up programs for two decades," said Dan Batrack, Tetra Tech Chairman and CEO. "We are pleased to continue our longstanding support by offering our industry-leading environmental services to the USACE Huntsville Engineering and Support Center as it works to return lands and waters to safe and productive use."

About Tetra Tech

Tetra Tech is a leading provider of consulting and engineering services differentiated by Leading with Science^® in providing 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 16,000 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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