Tetra Tech Inc., Morris Plains, N.J. www.tetratech.com Tetra Tech, Inc. is a leading provider of consulting, engineering and technical services. With about 9,000 associates located in the United States and internationally, the Company supports commercial and governmental clients in the areas of resource management and infrastructure. Tetra Tech's services include research and development, applied science and technology, engineering design, construction management, and operations and maintenance. Tetra Tech company is highly regarded for its expertise in coastal impact analysis, including ecologically sensitive planning.