Tetra Tech Promotes James Jaska to President

Business Wire, Nov 14, 2001

Business Editors

PASADENA, Calif.--(BUSINESS WIRE)--Nov. 14, 2001

Tetra Tech, Inc. (Nasdaq:TTEK) today announced that it has promoted James Jaska, from Executive Vice President, to the Company's President. In his role as President, Mr. Jaska will be responsible for company operations. He will also maintain his title of Chief Financial Officer as the Company pursues his replacement. Dr. Hwang will remain as the Company's Chairman and Chief Executive Officer.

Mr. Jaska joined the Company in 1994 as Vice President, Chief Financial Officer and Treasurer. From 1991 to 1994, Mr. Jaska had operational responsibility for large government defense plants at Alliant Techsystems, Inc., and also held several operations and management positions. From 1988 to 1990, he served as the Director of Finance and Business Management at Honeywell's Precision Weapons Operations. From 1981 to 1987, he was responsible for environmental affairs at Honeywell. From 1977 to 1981, he managed regulatory affairs at Ecolab, Inc. Mr. Jaska received B.S. and M.S. degrees from Western Illinois University and completed an executive management program through Harvard University.

Tetra Tech (www.tetratech.com) is a leading provider of specialized management consulting and technical services in three principal business areas: resource management, infrastructure and communications. The Company's clients include a diverse base of public and private sector organizations served by more than 7,000 employees located throughout the United States and internationally.

Certain statements contained in this news release are forward-looking statements that involve risks and uncertainties, such as those related to the Company's acquisition strategy and the fluctuations in the Company's quarterly operating results and stock price, and the other risks detailed from time to time in the Company's SEC reports.