Tetra Tech

Tetra Tech is one of the leading providers of provider of consulting, engineering and technical services in the world. The company maintains more than 280 office locations. It undertakes groundwater, mining, geotechnical, information technology, and environmental and watershed management projects. Tetra Tech provides technical support services for energy and disaster management projects. The company also provides architectural, program administration, and interior and exterior design services. With annual revenues of over $2 billion, it employs a staff of nearly 10,000 people. As a publicly traded company, Tetra Tech s subsidiaries include GeoTrans, Haselwood Enterprises, Ardaman & Associates, and Bryan A. Stirrat & Associates.