Tetra Tech GEO was founded in 1979 as a firm specializing in groundwater flow and transport modeling. We utilized these skills, providing services at some of the most complex environmental sites across the United States at such locations as the Savannah River Site, the Lipari Landfill, the Nevada Test Site, Love Canal, and the Rocky Mountain Arsenal. Today we have grown to meet the comprehensive environmental needs of our clients combining technical excellence and practical experience investigating and remediating environmental sites.

Our skill set encompasses core capabilities such as modeling, characterization, remediation and compliance. But our growth has paralleled meeting our customer's needs in emerging areas such as developing sustainable businesses, helping deal with environmental liabilities, and comprehensive information management services.

In 1988 we became part of Tetra Tech. Tetra Tech is a leading provider of consulting, engineering, program management, construction management, and technical services. The Company supports government and commercial clients by providing innovative solutions to complex problems focused on water, environment, energy, infrastructure, and natural resources. With more than 13,000 employees worldwide, Tetra Tech's capabilities span the entire project life cycle.