Tetra Tech Awarded $91 Million Remediation Contract at NASA Kennedy Space Center and Cape Canaveral09:00 EDT Monday, July 09, 2012 PASADENA, Calif. (Business Wire) -- Tetra Tech, Inc. (NASDAQ: TTEK) announced today that it has been awarded a $91 million contract to provide engineering services to investigate, design, and implement remedial actions at the National Aeronautics and Space Administration (NASA) Kennedy Space Center and Cape Canaveral Air Force Station, in Florida. This multiple-award, indefinite delivery/indefinite quantity contract has a five-year period of performance. Under this new contract, Tetra Tech can develop and implement contamination assessment and remedial actions at sites that are contaminated with hazardous waste, solid waste, and/or petroleum products. These activities are generally regulated under the Resource Conservation and Recovery Act (RCRA). Tetra Tech will provide RCRA regulatory documentation, investigate contamination, develop remedial designs, and conduct groundwater and soil remediation. 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 more than 13,000 employees 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. Tetra Tech, Inc.Jim Wu, Investor RelationsTalia Starkey, Media & Public Relations(626) 470-2844