STV Inc

Established in 1956, Dewberry is a professional service firm that serves government agencies, corporations, real estate developers, colleges, universities, school districts, and other commercial and institutional organizations. The firm provides program management, planning, engineering, architecture, surveying and geographical information services. Its capabilities include site analysis, land planning and zoning assistance, surveying, cost estimation, tree replication, stealth wall installation and construction administration. Dewberry also specializes in the areas of security and homeland defense, telecommunication, transportation and water resource engineering. Its clients include the Department of Labor, U.S. Army, U.S. Navy, Army Corps of Engineers, University of Virginia and The Travelers Companies.

With more than 15 offices throughout the United States, Tetra Tech NUS provides environmental consulting and engineering, remediation, construction and information technology services to government and commercial clients. It offers air quality, regulatory compliance, environmental analysis, planning, hazardous waste management, nuclear plant licensing and risk assessment solutions. The company also specializes in the water and wastewater treatment services. Tetra Tech NUS is a subsidiary of Tetra Tech, which is one of the world s leading companies that provides consulting, engineering and technical services. Founded in 1996, the parent company maintains a staff of over 10,000 employees. It offers solutions for waterways, harbors and coastal areas. Tetra Tech operates various subsidiaries, including Tetra Tech FC, Tetra Tech International and Tetra Tech International.