USAID Awards Tetra Tech $85 Million Contract for Improved Energy Security in Ukraine

Tetra Tech, Inc. (NASDAQ: TTEK) announced today that the U.S. Agency for International Development (USAID) awarded the Company an $85 million single-award contract to support enhanced energy security in Ukraine. The five-year USAID/Ukraine Energy Security through Competitive Energy Markets Program aims to improve the legal and regulatory environment in the energy sector and increase the resilience of energy supplies in Ukraine.

Tetra Tech will provide technical services to support private sector-led energy investments, increased renewable energy generation, and reliable and affordable energy for all Ukrainians. Specific tasks include developing energy market models to create competitive energy market reforms, completing renewable energy pre-feasibility assessments, and developing creative financial incentive mechanisms to facilitate private sector investment in renewable energy. Tetra Tech also will collaborate with local organizations in implementing the program to develop Ukraine’s institutional capacity, encourage ownership of results, and ensure sustainability of reforms.

“Tetra Tech is pleased to support USAID’s work in Ukraine to improve energy efficiency and supply while stimulating economic growth for the region and its citizens,” said Dan Batrack, Tetra Tech’s Chairman and CEO.

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 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 Form 10-Q filings with the Securities and Exchange Commission.