Tetra Tech Awarded FAA Security and Hazardous Materials Support Contract

Tetra Tech, Inc. (NASDAQ: TTEK) announced today that the Federal Aviation Administration’s (FAA) Office of Security and Hazardous Materials Safety (ASH) has awarded the Company a contract for a maximum cumulative ceiling value of $77 million for ASH III Program Support Services. Tetra Tech will support ASH to make aviation safer and smarter through improvements in hazardous materials safety, personnel security, and facility security. ASH has the primary responsibility within the FAA for security and critical-infrastructure protection, and partners with other Federal agencies on national security matters that have a direct impact on aviation.

Under this contract, Tetra Tech will provide ASH with specialized cybersecurity services as well as help to manage FAA hazardous materials tracking systems. Tetra Tech will also offer technical services related to emergency operations, contingency planning, intelligence activities, and planning for the safe transportation of hazardous materials in air commerce.

“For more than two decades, Tetra Tech has provided support services to the FAA,” said Dan Batrack, Tetra Tech’s Chairman and CEO. “We are pleased to continue supporting the FAA ASH program in providing safe and secure airways.”

About Tetra Tech (www.tetratech.com)

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 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.

View source version on businesswire.com: http://www.businesswire.com/news/home/20170713005222/en/

Tetra Tech, Inc.Jim Wu, Investor RelationsCharlie MacPherson, Media & Public Relations626-470-2844