Tetra Tech, Inc.

Tetra Tech, Inc., a global provider of consulting and engineering services, operates through two primary segments.

Government Services Group (GSG):

• Offers services including early data collection and monitoring, data analysis and information management, and science and engineering applied research.

• Provides engineering design, project management, and operations and maintenance services.

• Specializes in climate change and energy management consulting, including greenhouse gas inventory assessment, certification, reduction, and management.

• It serves federal, state, and local governments, as well as development agencies in sectors such as water resources, environmental monitoring, waste management, and civil infrastructure planning.

Commercial/International Services Group (CIG):

• Delivers similar services as GSG, including feasibility studies and assessments alongside the standard suite of early data collection, monitoring, and project management.

• Caters to clients in the natural resources, energy, and utilities markets.

• Focuses on sustainable infrastructure master planning and engineering design.

Founded in 1966, Tetra Tech is headquartered in Pasadena, California.