Tetra Tech-EMC, also known as Engineering Management Concepts, provides technical and staff augmentation services for the commercial sector and government agencies. The company offers computer system design, analysis and integration solutions. It provides systems engineering, test and evaluation, as well as logistics support services. Tetra Tech-EMC also conducts environmental studies and offers human capital management programs. The company performs technical writing and modeling and simulation operations. In addition, it provides facilities operation and management services. Tetra Tech-EMC is a subsidiary of Tetra Tech, which is one of the leading providers of consulting, program management, construction and technical services for the resource management and infrastructure markets in the United States.