Tetra Tech, Inc. (NASDAQ: TTEK) announced today that it has been awarded a $76 million contract with the Federal Aviation Administration’s (FAA) Office of Security and Hazardous Materials Safety (ASH) Information Technology Support Services. Under this new contract, Tetra Tech will provide expanded programmatic and operational support services for FAA’s information technology and security programs. Tetra Tech will also provide specialized cyber security services and help manage hazardous materials tracking systems. The single award contract includes one base year and four option years. Tetra Tech has provided support services for FAA’s ASH for more than 10 consecutive years through multiple contracts. About Tetra Tech ( www.tetratech.com) Tetra Tech is a leading provider of consulting, engineering, program management, construction management, and technical services. The Company supports government and commercial clients by providing innovative solutions to complex problems focused on water, environment, energy, infrastructure, and natural resources. With 14,000 staff worldwide, Tetra Tech’s capabilities span the entire project life cycle. 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.