PASADENA, Calif., Jan 04, 2008 (BUSINESS WIRE) -- Tetra Tech, Inc. (NASDAQ:TTEK) announced today that the Tetra Tech-Tesoro joint venture team was recently awarded a Multiple Award Task Order Contract (MATOC) by the U.S. Army Corps of Engineers, Savannah District. Three other contractors were also awardees. The contract is for design/build and construction services for facilities throughout North Carolina and South Carolina for the Corps' South Atlantic Division, although work can be performed outside of those geographic boundaries as determined by the contracting officer. The contract has a base period of three years with two additional one-year option periods, or the $500 million capacity, whichever occurs first.

Tetra Tech's joint venture partner, Tesoro Corporation, is a construction company located in Virginia Beach, VA.

The Tetra Tech-Tesoro JV was also awarded the initial task order under the MATOC, a $17 million task order for the renovation of five existing facilities at Fort Gordon, Georgia.

About Tetra Tech (www.tetratech.com)

Tetra Tech is a leading provider of consulting, engineering, and technical services. With approximately 8,500 associates located in the United States and internationally, the Company supports commercial and government clients in the areas of resource management and infrastructure. Tetra Tech's services include research and development, applied science and technology, engineering design, program management, construction management, and operations and maintenance.