Tetra Tech Coffey Holding Pty Limited is a foreign-owned private company, deriving revenue from the provision of engineering consulting services and its international development business. The company operates in Australia, employs approximately 1,270 people and is administered by its head office in Chatswood, New South Wales.

Tetra Tech Coffey Holding Pty Ltd is a wholly-owned subsidiary of Tetra Tech Inc., a United States-based engineering services firm.

Tetra Tech Coffey Holding Pty Ltd provides a range of geotechnical, environmental and mining consulting services to the mining, oil & gas, property & transport infrastructure and defence industries, as well as delivering consulting and training services with governments and donor agencies globally.

The company operates in a number of business segments providing services including: 

  • Development Assistance - Includes fund and grant management, project design and management, and organisational development and training to streamline business processes.
  • Engineering - Multidisciplinary engineering teams provide problem-solving solutions, including feasibility, construction, project completion, asset management and demolition.
  • Environmental Management - Including geospatial services, environmental and social services, and site assessment and remediation.
  • Geotechnical Engineering - Including deep foundations, earthquake engineering, geophysics, pavement, temporary works and underground spaces.
  • Project Management - Including sectors such as defence, education, health, justice, commercial, residential and sports & leisure.
  • Testing Services - Including aggregate testing, concrete testing, soil testing, site supervision, assessment and monitoring, instrumentation and safety practices.
  • Occupational Hygiene - Including the provision of services designed to minimise workplace hazards through chemical risk management, physical risk management and biological risk management.
  • Asbestos & Hazardous Materials - Including testing laboratories and risk management

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