Tetra Tech Inc. was founded in 1966. It is a provider of consulting, engineering, program management, construction management and technical services that focuses on supporting fundamental needs for water, natural resources, the environment, infrastructure and energy. It is a service company that leads with science. It is a provider of consulting and engineering renowned for its leadership in water-related services for public and private clients. The Company manages its business under four reportable segments namely Engineering and Consulting Services ('ECS'), Technical Support Services ('TSS'), Engineering and Architecture Services ('EAS'), and Remediation and Construction Management ('RCM'). ECS provides front-end science, consulting engineering services and project management in the areas of surface water management, groundwater, waste management, mining and geotechnical sciences, arctic engineering, industrial processes, and information technology. TSS advises clients through the study, design and implementation phases of projects. TSS provides management consulting and strategic direction in the areas of environmental assessments or hazardous waste management, climate change, international development/stabilization, energy services, and technical government staffing services. EAS provides engineering and architecture design services, including Leadership in Energy and Environmental Design ('LEED') and sustainability services, together with technical and program administration services for projects related to water infrastructure, buildings, and transportation and facilities. RCM is focused on completing its full-service support to U.S. federal government, state and local governments and commercial clients. RCM's service lines include environmental remediation, infrastructure development, and alternative energy. The Company's main competitors includes: AECOM Technology Corporation; AMEC PLC; Arcadis NV; Black & Veatch Corporation; Brown & Caldwell; CH2M Hill Companies Ltd.; Camp Dresser & McKee, Inc.; Chemonics International Inc.; Dessau Inc.; GENIVAR Inc.; GHD; ICF International, Inc.; Jacobs Engineering Group Inc.; Science Applications International Corporation; The Shaw Group Inc.; Sinclair Knight Merz Pty Ltd.; SNC-Lavalin Group Inc.; Stantec Inc.; TRC Companies, Inc.; URS Corporation; and Weston Solutions, Inc. The Company is engaged in various service activities that are subject to government oversight, including environmental laws and regulations, general government procurement laws and regulations, and other regulations and requirements imposed by specific government agencies with which it conducts business.