Delivering asbestos risk assessment and hygiene monitoring for a critical utility tunnel project
Tetra Tech Coffey experts were engaged by Thiess John Holland to help the development of management plans during the geotechnical work and construction of a 420 kilometre utility tunnel between Gladstone and Curtis Island in Queensland in Australia.
Our teams performed monitoring while geotechnical drilling was performed and the tunnel boring machine was operational. It was essential for the safety of all workers and project continuity that airborne fibres were kept below the acceptable quality guidelines. A tailored asbestos air monitoring management plan was also developed to reduce the activation of airborne asbestos fibres.
Expert services to minimising risk
Tetra Tech Coffey services for the project included:
- Geotechnical designer for all permanent works including earthworks (cuttings and rail embankments); foundations for bridges; retaining walls; material sourcing; road pavement design & rail capping design
- Through sophisticated analysis we showed the use of locally won material was suitable for embankment construction
- The revised earthworks specification & construction methodology provided significant cost & program saving
- Developed new mechanistic approach to rail capping design
Client name: Thiess John Holland
Location: Gladstone, Queensland, Australia
Duration: 2010-2014
Services provided: Geotechnical services, occupational hygiene services